CN108534489B - Heating device for be used for fuel analysis - Google Patents
Heating device for be used for fuel analysis Download PDFInfo
- Publication number
- CN108534489B CN108534489B CN201810272098.4A CN201810272098A CN108534489B CN 108534489 B CN108534489 B CN 108534489B CN 201810272098 A CN201810272098 A CN 201810272098A CN 108534489 B CN108534489 B CN 108534489B
- Authority
- CN
- China
- Prior art keywords
- tray
- heating device
- heating
- fuel analysis
- analysis according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 51
- 239000000446 fuel Substances 0.000 title claims abstract description 19
- 238000007664 blowing Methods 0.000 claims abstract description 8
- 238000005303 weighing Methods 0.000 claims description 13
- 230000003287 optical effect Effects 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 20
- 239000003245 coal Substances 0.000 description 46
- 239000010410 layer Substances 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 239000012466 permeate Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000004449 solid propellant Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
- F26B21/002—Drying-air generating units, e.g. movable, independent of drying enclosure heating the drying air indirectly, i.e. using a heat exchanger
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/04—Heating arrangements using electric heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/02—Applications of driving mechanisms, not covered by another subclass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/22—Controlling the drying process in dependence on liquid content of solid materials or objects
- F26B25/225—Controlling the drying process in dependence on liquid content of solid materials or objects by repeated or continuous weighing of the material or a sample thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/28—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/22—Fuels; Explosives
- G01N33/222—Solid fuels, e.g. coal
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Microbiology (AREA)
- Sustainable Development (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention discloses a heating device for fuel analysis, which comprises a box body, wherein a tray is arranged in the box body and is used for placing a container filled with a sample; the box body is also provided with a heating component for heating the container and the sample and a blowing component for blowing air to form air flow in the box body. The heating device for fuel analysis has the advantages of simple structure, high test efficiency, reliable and accurate test and the like.
Description
Technical Field
The invention mainly relates to the technical field of coal sample analysis, in particular to a heating device for fuel analysis.
Background
In the field of solid fuel analysis, such as coal samples, in order to determine the moisture content of the coal samples, a crucible containing the coal samples is placed in a heating container, and the crucible is heated by a heating device to enable the coal samples to reach a certain temperature and be kept, so that the moisture in the coal samples is quickly evaporated, and the moisture content in the coal samples is determined.
The rapid water determination device mainly used in the market at present is a light wave heating water determination device, and the light wave is mainly used for irradiating the coal sample, so that the coal sample reaches a certain temperature and is kept. The moisture in the coal sample is rapidly evaporated, and thus the moisture content in the coal sample is measured.
Through the research of the prior art, the existing light wave heating moisture testing device has the following defects:
1. because the coal sample has a certain thickness, light waves can only irradiate the surface layer of the coal sample, but not the inner layer of the coal sample, and heat can only be transferred to the inner layer by the surface layer by means of free thermal diffusion, so that the temperature rise speed of the inner layer coal sample is low, and the water evaporation speed is low. Affecting the efficiency of the test.
2. When the temperature of the coal sample exceeds the specified temperature, the components of the coal sample change, and other substances except moisture volatilize. Because the moisture content is tested by comparing the mass difference before and after drying, if other substances are volatilized, the moisture content is affected. The light waves irradiate the coal sample, so that the surface temperature of the coal sample is difficult to control and easily exceeds the set temperature, and the moisture test content is affected.
3. The coal bed has a certain area, a part of coal samples are irradiated with more light waves, a part of coal samples are irradiated with less light waves, the coal samples irradiated with more light waves are fast in water evaporation, and the coal samples with less light waves are slow in water evaporation. All the moisture needs to be evaporated, thus making the moisture test inefficient.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the technical problems existing in the prior art, the invention provides the heating device for fuel analysis, which has high test efficiency and reliable test.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a heating device for fuel analysis, comprising a box body, wherein a tray is arranged in the box body and is used for placing a container containing a sample; the box body is also provided with a heating component for heating the container and the sample and a blowing component for blowing air to form air flow in the box body.
As a further improvement of the above technical scheme:
the heating assembly comprises an optical wave tube which is positioned above the tray and is opposite to the container.
The light wave tube is a ring-shaped light wave tube.
A shielding sheet is arranged between the light wave tube and the container.
The blast assembly includes a blast blower located below the tray.
The air outlet of the air blower is provided with a heater for heating air.
The heater is a fin type heater.
A wind shield is arranged between the blower and the tray.
The tray is connected with a rotary driving assembly for driving the tray to rotate.
The rotary driving assembly is provided with a lifting driving assembly, and the lifting driving assembly is used for driving the tray to lift up and down.
A weighing assembly for weighing the container is arranged below the tray.
The weighing assembly comprises a balance and a push rod, and the push rod is arranged on the balance and is opposite to the container.
And the outer sides of the box bodies are paved with heat insulation layers.
A temperature detecting piece for detecting temperature is arranged in the box body.
The box body is provided with air exchange holes.
Compared with the prior art, the invention has the advantages that:
according to the heating device for fuel analysis, when the test is performed, the heating assembly is used for rapidly heating the inner wall of the box body and the sample to the preset temperature, then the air blast assembly is used for blasting air to form air flow, and the air flow permeates into the inner layer of the sample to heat the sample, so that moisture of the sample is rapidly evaporated; in addition, aiming at the temperature difference of the coal samples in different areas caused by the heating difference of the heating assemblies, the air flow can cool the coal samples in the areas with overhigh temperature, and heat the coal samples in the areas with overhigh temperature, so that the temperatures of the coal samples in different areas are kept approximately equal or the temperature rising rates are equal, and the testing efficiency is improved.
Drawings
Fig. 1 is a schematic structural view of the present invention.
The reference numerals in the figures denote: 1. a housing; 2. a case; 201. a heat preservation layer; 202. an air exchange hole; 3. a tray; 301. a container; 4. a heating assembly; 401. an optical wave tube; 402. a shielding sheet; 5. a blower assembly; 501. a blower; 502. a heater; 503. a wind shielding sheet; 6. a weighing assembly; 601. a balance; 602. a push rod; 7. a rotary drive assembly; 8. a lifting driving assembly; 801. a rotating shaft; 9. a temperature detecting member.
Detailed Description
The invention is further described below with reference to the drawings and specific examples.
As shown in fig. 1, the heating device for fuel analysis in this embodiment includes a housing 1 and a case 2, the case 2 is disposed in the housing 1, a tray 3 is disposed in the case 2, and a container 301 for holding a sample is disposed in the case 2, where the container 301 may be a sample bottle, a crucible, or an oxygen bomb, and the sample is solid fuel, such as coal, and in this embodiment, the container 301 is taken as a crucible, and the sample is taken as coal for illustration; also provided within the housing 2 are a heating assembly 4 for heating the container 301 and the sample, and a blower assembly 5 for blowing air to form an air flow within the housing 2. When the test is performed, after the container 301 and the sample are rapidly heated to a preset temperature by the heating component 4, air is blown by the air blowing component 5 to form air flow, and the air flow permeates into the inner layer of the coal sample to heat the inner layer of the coal sample, so that the moisture of the coal sample is rapidly evaporated; in addition, aiming at the temperature difference of the coal samples in different areas caused by the heating difference of the heating assembly 4, the air flow can cool the coal samples in the areas with overhigh temperature and heat the coal samples in the areas with overhigh temperature, so that the temperatures of the coal samples in different areas are kept approximately equal or the temperature rising rates are equal, and the testing efficiency is improved.
In the embodiment, the tray 3 is a circular tray 3, and the crucible is arranged in a crucible hole at the circumference side of the turntable; the heating assembly 4 comprises an annular light pipe 401 which is positioned above the circular tray 3 and is opposite to each crucible. The light wave tube 401 is adopted for heating, and light waves irradiate on the coal sample and the inner wall of the box body 2, so that the surface temperature of the coal sample can be remarkably and rapidly increased. In addition, a shielding sheet 402 is arranged between the annular light wave tube 401 and the crucible, so that the cost is prevented from changing due to the fact that light waves directly irradiate a coal sample and exceed a specified temperature.
In this embodiment, the blower assembly 5 includes blowers 501, the number of blowers 501 being determined according to the specific sample, sample drying rate, etc.; when the number of the blowers 501 is plural, the blowers 501 may be annularly arranged below the tray 3, wherein the air outlets of the blowers 501 face upward; in addition, in order to further rapidly increase the temperature of the air in the case 2, a heater 502 (such as a fin heater 502) for heating the air is provided at the air outlet of the blower 501, so that the air at the air outlet of the blower 501 is sufficiently and rapidly heated, thereby improving the test efficiency. In addition, a wind shielding plate 503 is arranged between the blower 501 and the tray 3, so that the air flow formed by the blower 501 forms uniform air flow in the box 2, and meanwhile, the air flow blown by the blower 501 directly blows the coal sample, so that the coal sample is blown out of the crucible, and the test precision is prevented from being influenced.
In this embodiment, a weighing assembly 6 for weighing the container 301 is disposed below the tray 3, specifically, the weighing assembly 6 includes a balance 601 and a ram 602, where the top end of the ram 602 is opposite to a crucible hole on the tray 3, and the bottom end of the ram 602 extends out of the case 2 and is disposed outside the balance 601; in order to cooperate the weighing assembly 6 to measure the weight of the coal sample in the crucible before and after the test, the tray 3 is fixed at one end of a rotating shaft 801, the other end of the rotating shaft 801 extends out of the box 2 to be connected with a rotary driving assembly 7 (such as a driving motor), and the rotating shaft 801 is driven to rotate when the driving motor rotates, so that the tray 3 rotates. The driving motor is installed on a lifting driving assembly 8 (such as a telescopic oil cylinder, an air cylinder and the like), and the tray 3 is lifted up and down by the up-down expansion of the lifting driving assembly 8. Of course, one end of the rotating shaft 801 may be directly connected to the lifting driving assembly 8, and then the lifting driving assembly 8 may be mounted on the rotation driving assembly 7. When weighing, firstly, the tray 3 is rotated, the crucible to be measured on the tray 3 is rotated to the position right above the ejector rod 602, then the whole tray 3 is lowered, the crucible is jacked up by the ejector rod 602 and separated from the tray 3, so that automatic weighing of the crucible is realized, and the weight of the crucible before and after drying is tested, so that a moisture test result is automatically obtained. Wherein the balance 601, the lifting drive assembly 8 and the rotation drive assembly 7 are all located in a cavity between the case 2 and the housing 1.
In this embodiment, the outer sides of the case 2 are all paved with heat insulation layers 201, so that heat dissipation is avoided; in addition, the air exchange holes 202 are formed in the box body 2, so that air in the box body 2 and outside air are exchanged to a certain extent, and moisture is ensured to be smoothly dispersed to the outside.
In this embodiment, a temperature detecting element 9 for detecting temperature is disposed in the box 2, and is used for monitoring the temperature in the box 2 in real time, so as to control the heating power of the optical waveguide 401, and avoid that the coal sample exceeds the specified temperature due to rapid heating; meanwhile, the heater 502 can be controlled, so that the air temperature in the box body 2 is prevented from exceeding a preset threshold value, and the reliability of test work is improved.
When the test is performed, as the light wave heating speed is high, the light wave is used for rapidly heating the surface coal sample and the inner wall of the box body 2 to the set temperature in the early stage, and then the light wave heating power is reduced, so that the temperature overshoot of the coal sample is avoided; in the later stage of the test, the light wave heating power is reduced, the blower 501 is matched with the heater 502, the temperature of the whole air in the box body 2 is increased, air flows are formed to balance the temperature of each area, and the test efficiency is improved.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the invention without departing from the principles thereof are intended to be within the scope of the invention as set forth in the following claims.
Claims (10)
1. A heating device for fuel analysis, characterized by comprising a box body (2), wherein a tray (3) is arranged in the box body (2) and is used for placing a container (301) containing a sample; the box body (2) is internally provided with a heating component (4) for heating the container (301) and the sample and a blowing component (5) for blowing air to form air flow in the box body (2);
the heating component (4) comprises an optical wave tube (401) which is positioned above the tray (3) and is opposite to the container (301);
a shielding sheet (402) is arranged between the light wave tube (401) and the container (301);
the blast assembly (5) comprises a blast fan (501) positioned below the tray (3); an air outlet of the blower (501) is provided with a heater (502) for heating air; a wind shielding sheet (503) is arranged between the blower (501) and the tray (3).
2. The heating device for fuel analysis according to claim 1, characterized in that the light wave tube (401) is a ring light wave tube.
3. The heating device for fuel analysis according to claim 1, wherein the heater (502) is a fin heater.
4. Heating device for fuel analysis according to any of claims 1 to 2, characterized in that the tray (3) is connected with a rotary drive assembly (7) for driving the tray (3) in rotation.
5. The heating device for fuel analysis according to claim 4, wherein a lifting driving assembly (8) is arranged on the rotary driving assembly (7), and the lifting driving assembly (8) is used for driving the tray (3) to lift up and down.
6. A heating device for fuel analysis according to claim 5, characterized in that a weighing assembly (6) for weighing the containers (301) is provided below the tray (3).
7. The heating device for fuel analysis according to claim 6, characterized in that the weighing assembly (6) comprises a balance (601) and a ram (602), the ram (602) being mounted on the balance (601) and facing the container (301).
8. The heating device for fuel analysis according to any one of claims 1 to 2, characterized in that the outside of the tank (2) is laid with a thermal insulation layer (201).
9. Heating device for fuel analysis according to any of claims 1 to 2, characterized in that a temperature detecting element (9) for detecting temperature is provided in the tank (2).
10. The heating device for fuel analysis according to any one of claims 1 to 2, wherein the tank (2) is provided with air exchange holes (202).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810272098.4A CN108534489B (en) | 2018-03-29 | 2018-03-29 | Heating device for be used for fuel analysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810272098.4A CN108534489B (en) | 2018-03-29 | 2018-03-29 | Heating device for be used for fuel analysis |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108534489A CN108534489A (en) | 2018-09-14 |
| CN108534489B true CN108534489B (en) | 2024-02-02 |
Family
ID=63481908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810272098.4A Active CN108534489B (en) | 2018-03-29 | 2018-03-29 | Heating device for be used for fuel analysis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108534489B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110967276A (en) * | 2018-09-30 | 2020-04-07 | 上海育语智能科技有限公司 | Electronic dust-falling cylinder |
| CN111256448B (en) * | 2020-02-10 | 2021-08-20 | 青岛大学附属医院 | Balanced type trogopterus dung condensation traditional Chinese medicine dryer |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2261025Y (en) * | 1996-07-30 | 1997-08-27 | 董桂芳 | Infrared moisture teller |
| US6227041B1 (en) * | 1998-09-17 | 2001-05-08 | Cem Corporation | Method and apparatus for measuring volatile content |
| CN2520504Y (en) * | 2002-01-31 | 2002-11-13 | 国电环境保护研究所 | Instrument for quick analysis of total moisture of coal |
| CN102507628A (en) * | 2011-09-21 | 2012-06-20 | 清华大学 | High-temperature protective clothing testing experiment system based on thermal manikin |
| CN102937546A (en) * | 2012-06-26 | 2013-02-20 | 湖南三德科技发展有限公司 | Horizontally-rotating type coal sample rapid dehumidifying device with dynamic moisture detection function |
| CN103033436A (en) * | 2011-09-30 | 2013-04-10 | 梅特勒-托利多公开股份有限公司 | Measuring device for gravimetric moisture determination |
| CN203534081U (en) * | 2013-10-25 | 2014-04-09 | 湖南三德科技股份有限公司 | Blowing hot air penetrating dry box |
| CN106370696A (en) * | 2016-09-12 | 2017-02-01 | 西安科技大学 | Temperature programmed coal oxidation experimental facility |
| CN208091110U (en) * | 2018-03-29 | 2018-11-13 | 湖南三德科技股份有限公司 | A kind of heating device for fuel analysis |
-
2018
- 2018-03-29 CN CN201810272098.4A patent/CN108534489B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2261025Y (en) * | 1996-07-30 | 1997-08-27 | 董桂芳 | Infrared moisture teller |
| US6227041B1 (en) * | 1998-09-17 | 2001-05-08 | Cem Corporation | Method and apparatus for measuring volatile content |
| CN2520504Y (en) * | 2002-01-31 | 2002-11-13 | 国电环境保护研究所 | Instrument for quick analysis of total moisture of coal |
| CN102507628A (en) * | 2011-09-21 | 2012-06-20 | 清华大学 | High-temperature protective clothing testing experiment system based on thermal manikin |
| CN103033436A (en) * | 2011-09-30 | 2013-04-10 | 梅特勒-托利多公开股份有限公司 | Measuring device for gravimetric moisture determination |
| CN102937546A (en) * | 2012-06-26 | 2013-02-20 | 湖南三德科技发展有限公司 | Horizontally-rotating type coal sample rapid dehumidifying device with dynamic moisture detection function |
| CN203534081U (en) * | 2013-10-25 | 2014-04-09 | 湖南三德科技股份有限公司 | Blowing hot air penetrating dry box |
| CN106370696A (en) * | 2016-09-12 | 2017-02-01 | 西安科技大学 | Temperature programmed coal oxidation experimental facility |
| CN208091110U (en) * | 2018-03-29 | 2018-11-13 | 湖南三德科技股份有限公司 | A kind of heating device for fuel analysis |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108534489A (en) | 2018-09-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108534489B (en) | Heating device for be used for fuel analysis | |
| CN101354294B (en) | Cylinder-shaped air medium high temperature constant temperature bath | |
| CN101611158A (en) | Iron core annealing furnace | |
| JP2007292764A (en) | Measuring device for moisture weight measurement | |
| JP6068251B2 (en) | Headspace sample introduction apparatus and method | |
| CN205333461U (en) | Moisture meter | |
| CN204064843U (en) | A kind of lift far infrared drying drimeter | |
| CN112827514A (en) | High-low temperature test box | |
| KR840006455A (en) | Drilling device and method of drilling with coke oven | |
| CN204100714U (en) | A kind of Quick drying instrument of applicable constant weight operation | |
| US7591169B2 (en) | Measuring instrument for gravimetric moisture determination | |
| CN106840956A (en) | Cold and hot two-chamber evaporation residue analyzer | |
| CN208091110U (en) | A kind of heating device for fuel analysis | |
| CN105928820B (en) | A kind of rapid evaporation residue system and method | |
| WO2018177352A1 (en) | Air heating type heating colour testing machine and method | |
| CN103775059B (en) | Secondary heat exchange is noninductive heated-air circulation oven | |
| CN103604830A (en) | Closed automatic flash point test system | |
| CN101251948B (en) | Detecting system and method for detecting temperature type alarm | |
| CN109814632B (en) | Accurate control device and method for liquid drop temperature | |
| CN104569357A (en) | Method and device for detecting lubricating oil evaporation loss | |
| CN210151157U (en) | Annealing furnace with flow guide cover | |
| CN206891893U (en) | Cold and hot two-chamber evaporation residue analyzer | |
| CN113970571A (en) | Simple blackness coefficient comparison device and blackness coefficient rapid determination method | |
| CN220241850U (en) | Curing box | |
| CN118500975A (en) | Constant weight measuring instrument |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |