CN203364888U - Differential pressure type flow sensor and flowmeter - Google Patents
Differential pressure type flow sensor and flowmeter Download PDFInfo
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- CN203364888U CN203364888U CN 201320452562 CN201320452562U CN203364888U CN 203364888 U CN203364888 U CN 203364888U CN 201320452562 CN201320452562 CN 201320452562 CN 201320452562 U CN201320452562 U CN 201320452562U CN 203364888 U CN203364888 U CN 203364888U
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- differential pressure
- flow sensor
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- pressure
- flowmeter
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Abstract
The utility model relates to the field of fluid flowmeters and in particular relates to a differential pressure type flow sensor and flowmeter. The differential pressure type flow sensor comprises a pressure measuring piece, wherein the pressure measuring piece is a cylinder; two channels which are not intercommunicated with each other are formed in the pressure measuring piece in parallel along the direction where the length of the pressure measuring piece is positioned; the two channels have the equal inner diameter and penetrate through the pressure measuring piece; two columns of through holes are symmetrically formed in an outer side wall of the pressure measuring piece; one column of through holes is communicated with one channel; the other column of through holes is communicated with the other channel. The differential pressure type flowmeter comprises a differential pressure transmitter used for sensing to obtain the differential pressure, a flow totalizer used for measuring the flow, and the differential pressure type flow sensor; the differential pressure type flow sensor is connected with the differential pressure transmitter; the differential pressure transmitter is connected with the flow totalizer. The provided differential pressure type flow sensor is not provided with a welding point, the possibility of internal leakage in the pressure measuring piece is reduced, and the possibility for preventing internal leakage through the differential pressure type flowmeter is higher.
Description
Technical field
The utility model relates to the field of flow meters of fluid, in particular to differential pressure flow sensor and flowmeter.
Background technology
Differential pressure flowmeter is comprised of differential pressure flow sensor, differential pressure transmitter and three parts of flow integrator.Along with advancing by leaps and bounds of electronic technology, the variation of matter has occurred in the precision of the secondary instruments such as differential pressure transmitter and integrating instrument, sensitivity, has reached high level.But the detection level in a source does not have important breakthrough, become the bottleneck of restriction differential pressure flowmeter development.
Ram-air pipe in the probe type flow sensor used now and static tube be by two be set up in parallel and length and diameter all identical pipe form, be welded with respectively a shorter pipe as pitot hole pipe and baroport pipe on the sidewall of the lower end of ram-air pipe and static tube, the bearing of trend of pitot hole pipe and baroport pipe is contrary.The outside at ram-air pipe and static tube is welded with protection tube.
The problem existed is: the pad between pitot hole pipe and ram-air pipe and baroport pipe and static tube is more, easily causes the interior leakage that enters the fluid in ram-air pipe and static tube, causes the error of flow measurements larger.
The utility model content
It is flowmeter that the purpose of this utility model is to provide a kind of differential pressure flow sensor, to solve the above problems.
The differential pressure flow sensor provided in embodiment of the present utility model comprises: the pressure part;
Described pressure part is cylinder, and along the length place direction of described pressure part, its inside is provided with two mutual disconnected passages side by side; The internal diameter of two described passages equates and all connects described pressure part; Be arranged with two row through holes on the lateral wall of described pressure part;
The described through hole of row and a described channel connection wherein; Wherein another is listed as described through hole and another described channel connection.
In the differential pressure flow sensor that the utility model provides, be provided with two mutual disconnected passages a body interior, these two passages are respectively as ram-air pipe and the static tube of differential pressure flow sensor, be provided with two row through holes on the lateral wall of pressure part, this two row through hole is as baroport and pitot hole, baroport and static tube are communicated with, and pitot hole and ram-air pipe are communicated with, and this structure is the pressure part.Like this, ram-air pipe and pitot hole, and baroport and static tube as a whole, there is no pad, reduced the possibility of leaking in the pressure part.
The differential pressure flowmeter that the utility model provides comprises: for induction obtain the differential pressure transmitter of pressure reduction, for flow integrator and the differential pressure flow sensor of measuring flow;
Described differential pressure flow sensor is connected with described differential pressure transmitter, and described differential pressure transmitter is connected with described flow integrator.
The accompanying drawing explanation
The system architecture schematic diagram of the differential pressure flowmeter that Fig. 1 provides for the utility model;
The differential pressure flow sensor that Fig. 2 provides for the utility model and the structural representation of fluid line;
The cross sectional representation of the pressure part that Fig. 3 provides for the utility model;
1. fluid line, 2. the pressure part, 3. play joint flange, 4. connecting pipe, 5. stop valve, 6. differential pressure transmitter, 7. flow integrator, 8. pitot hole, 9. ram-air pipe, 10. equalizing valve, 11. transition pieces, 12. baroports, 13. static tubes, joint flange on 14..
Embodiment
Below by specific embodiment, also by reference to the accompanying drawings the utility model is described in further detail.
Embodiment 1: as shown in Figure 1 to Figure 3,
Differential pressure flow sensor comprises: pressure part 2;
Described pressure part 2 is cylinder, and along the length place direction of described pressure part 2, its inside is provided with two mutual disconnected passages side by side; The internal diameter of two described passages equates and all connects described pressure part 2; Be arranged with two row through holes on the lateral wall of described pressure part 2;
The described through hole of row and a described channel connection wherein; Wherein another is listed as described through hole and another described channel connection.
In the differential pressure flow sensor that the utility model provides, be provided with two mutual disconnected passages a body interior, these two passages are respectively as ram-air pipe 9 and the static tube 13 of differential pressure flow sensor, be provided with two row through holes on the lateral wall of pressure part 2, this two row through hole is as baroport 12 and pitot hole 8, baroport 12 and static tube 13 are communicated with, and pitot hole 8 and ram-air pipe 9 are communicated with, and this structure is pressure part 2.Like this, ram-air pipe 9 and pitot hole 8, and baroport 12 and static tube 13 as a whole, there is no pad, reduced the possibility of pressure part 2 interior leakages.
The differential pressure flowmeter that the utility model provides comprises: for induction obtain the differential pressure transmitter 6 of pressure reduction, for flow integrator 7 and the differential pressure flow sensor of measuring flow;
Described differential pressure flow sensor is connected with described differential pressure transmitter 6, and described differential pressure transmitter 6 is connected with described flow integrator 7.
Embodiment 2:
Differential pressure flow sensor comprises: pressure part 2;
Described pressure part 2 is cylinder, and along the length place direction of described pressure part 2, its inside is provided with two mutual disconnected passages side by side; The internal diameter of two described passages equates and all connects described pressure part 2; Be arranged with two row through holes on the lateral wall of described pressure part 2;
The described through hole of row and a described channel connection wherein; Wherein another is listed as described through hole and another described channel connection.
In the differential pressure flow sensor that the utility model provides, be provided with two mutual disconnected passages a column body, these two passages are respectively as ram-air pipe 9 and the static tube 13 of differential pressure flow sensor, be provided with two row through holes on the lateral wall of pressure part 2, this two row through hole is as baroport 12 and pitot hole 8, baroport 12 and static tube 13 are communicated with, and pitot hole 8 and ram-air pipe 9 are communicated with, and this structure is pressure part 2.Like this, ram-air pipe 9 and pitot hole 8, and baroport 12 and static tube 13 as a whole, there is no pad, reduced the possibility of pressure part 2 interior leakages.
In order to reduce the resistance of pressure part 2 convection cell in fluid passage, the xsect of described pressure part 2 can be set for oval, the bearing of trend of major axis of xsect that pressure part 2 is set is consistent with the flow direction in fluid passage, has improved the accuracy that differential pressure flowmeter is measured.
Simultaneously, preferably, the xsect of pressure part 2 is made as ellipse, the major axis place direction of xsect of pressure part 2 and the flow direction of the fluid in fluid line 1 is set and communicates, now meeting flow path direction is the end that pressure part 2 cross-sectional width are less, has reduced the resistance of pressure part 2 convection cells.Back of the body flow path direction is also the end that pressure part 2 cross-sectional width are less, has reduced the accumulation of the impurity in the fluid at baroport 12 places, prevents that sensor from stopping up.
Resistance while in order to reduce fluid, entering pressure part 2, the axis that two row through holes can be set is all parallel with the long axis direction of the xsect of pressure part 2.
For the internal diameter of two passages arranging equates, the flow value in the ram-air pipe 9 finally recorded and static tube 13 is all more accurate, and the axis that two passages can be set all intersects vertically with the major axis of the xsect of described pressure part 2.
When pressure part 2 is set as xsect and is oval-shaped cylinder, minor axis place direction along its xsect, the width of the axial cross section of pressure part 2 is less, the resistance of convection cell is less, it is less that fluid enters the energy consumed in the process in ram-air pipe 9 in flow process, the pressure difference obtained is more accurate, and the flow value finally recorded is more accurate.
The differential pressure flowmeter that the utility model provides comprises: for induction obtain the differential pressure transmitter 6 of pressure reduction, for flow integrator 7 and the differential pressure flow sensor of measuring flow;
Described differential pressure flow sensor is connected with described differential pressure transmitter 6, and described differential pressure transmitter 6 is connected with described flow integrator 7.
Fluid in fluid passage enters differential pressure flow sensor, differential pressure transmitter 6 is measured the differential pressure of ram-air pipe 9 and static tube 13, the 4-20mA signal is sent to flow integrator 7, by flow integrator 7, reads moment flow and integrated flux, complete flow measurement.Use the differential pressure flowmeter of this differential pressure flow sensor setting to prevent that the possibility of interior leakage is higher.
Described differential pressure flow sensor also comprises: connecting pipe 4, stop valve 5 and equalizing valve 10;
Two described passages in described pressure part 2 are connected with described differential pressure transmitter respectively by two described connecting pipes 4 respectively; Be respectively equipped with described stop valve 5 on two described connecting pipes 4;
Between described stop valve 5 and described differential pressure transmitter 6, between two described connecting pipes 4, be provided with the equalizing valve 10 that two described connecting pipes 4 are communicated with.
The stop valve 5 arranged and equalizing valve 10 are for when regulating the balance of differential pressure transmitter 6, and two stop valves 5 are closed, and by equalizing valve 10, carry out adjustment.
In order to facilitate the connection between pressure part 2 and fluid passage, can on pressure part 2, be provided for the flange be connected with fluid line 1.
In order to facilitate the connection between pressure part 2 and connecting pipe 4, also comprise transition piece, described flange comprises two, is respectively upper joint flange 14 for being connected with described transition piece and lower joint flange 3 for being connected with fluid line 1; One end of described transition piece is connected with described stop valve 5 by described connecting pipe 4.
For the fluid reduced in fluid line 1 enters the resistance in pressure part 2, the Axis Extension direction of the described through hole on the sidewall of the described pressure part 2 that is positioned at fluid line 1 can be set, flowing to of the fluid interior with described fluid line 1 is identical.
In order to facilitate the ram-air pipe 9 in pressure part 2 to be connected with differential pressure transmitter 6 by a connecting pipe 4 respectively with static tube 13, can two connection ducts that do not communicate be set transition piece 11 is interior, two described connection ducts are connected respectively with two described stop valves 5 by connecting pipe 4 respectively.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. a differential pressure flow sensor, is characterized in that, comprising: the pressure part;
Described pressure part is cylinder, and along the length place direction of described pressure part, its inside is provided with two mutual disconnected passages side by side; The internal diameter of two described passages equates and all connects described pressure part; Be arranged with two row through holes on the lateral wall of described pressure part;
The described through hole of row and a described channel connection wherein; Wherein another is listed as described through hole and another described channel connection.
2. differential pressure flow sensor according to claim 1, is characterized in that,
The xsect of described pressure part is oval.
3. differential pressure flow sensor according to claim 2, is characterized in that,
The axis of the described through hole of two row is all parallel with the long axis direction of the xsect of described pressure part.
4. differential pressure flow sensor according to claim 3, is characterized in that,
The axis of two described passages all intersects vertically with the major axis of the xsect of described pressure part.
5. a differential pressure flowmeter, is characterized in that, comprising: for induction obtain the differential pressure transmitter of pressure reduction, for flow integrator and the differential pressure flow sensor as described as claim 1 to 4 any one of measuring flow;
Described differential pressure flow sensor is connected with described differential pressure transmitter, and described differential pressure transmitter is connected with described flow integrator.
6. differential pressure flowmeter according to claim 5, is characterized in that,
Described differential pressure flow sensor also comprises: connecting pipe, stop valve and equalizing valve;
Two described passages in described pressure part are connected with described differential pressure transmitter respectively by two described connecting pipes respectively; Be respectively equipped with described stop valve on two described connecting pipes;
Between described stop valve and described differential pressure transmitter, between two described connecting pipes, be provided with the described equalizing valve that two described connecting pipes are communicated with.
7. differential pressure flowmeter according to claim 6, is characterized in that,
Also be provided with the flange for being connected with fluid line on described pressure part.
8. differential pressure flowmeter according to claim 7, is characterized in that, also comprises transition piece;
Described flange comprises two, is respectively upper joint flange for being connected with described transition piece and lower joint flange for being connected with described fluid line;
One end of described transition piece is connected with described stop valve by described connecting pipe.
9. differential pressure flowmeter according to claim 8, is characterized in that,
Be positioned at the Axis Extension direction of the described through hole on the sidewall of described pressure part of described fluid line, identical with flowing to of fluid in described fluid line.
10. differential pressure flowmeter according to claim 8, is characterized in that,
Be provided with two connection ducts that do not communicate in described transition piece, two described connection ducts are connected respectively with two described stop valves by connecting pipe respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320452562 CN203364888U (en) | 2013-07-26 | 2013-07-26 | Differential pressure type flow sensor and flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320452562 CN203364888U (en) | 2013-07-26 | 2013-07-26 | Differential pressure type flow sensor and flowmeter |
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| Publication Number | Publication Date |
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| CN203364888U true CN203364888U (en) | 2013-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320452562 Expired - Fee Related CN203364888U (en) | 2013-07-26 | 2013-07-26 | Differential pressure type flow sensor and flowmeter |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103808377A (en) * | 2014-03-11 | 2014-05-21 | 济钢集团有限公司 | Differential pressure type flow measuring system |
| CN105806423A (en) * | 2016-03-09 | 2016-07-27 | 宁波钢铁有限公司 | Large-diameter low-pressure fouling gas flow measurement throttling device |
| CN109579922A (en) * | 2019-02-01 | 2019-04-05 | 飞思仪表（深圳）有限公司 | A kind of plug-in type differential pressure flowmeter and flow-measuring method |
| CN110672165A (en) * | 2019-11-14 | 2020-01-10 | 上海权宥环保科技有限公司 | Multi-point measurement Pitotbar flow sensor |
| CN111198015A (en) * | 2018-11-19 | 2020-05-26 | 中冶宝钢技术服务有限公司 | Pipeline gas flow measuring device |
-
2013
- 2013-07-26 CN CN 201320452562 patent/CN203364888U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103808377A (en) * | 2014-03-11 | 2014-05-21 | 济钢集团有限公司 | Differential pressure type flow measuring system |
| CN105806423A (en) * | 2016-03-09 | 2016-07-27 | 宁波钢铁有限公司 | Large-diameter low-pressure fouling gas flow measurement throttling device |
| CN111198015A (en) * | 2018-11-19 | 2020-05-26 | 中冶宝钢技术服务有限公司 | Pipeline gas flow measuring device |
| CN109579922A (en) * | 2019-02-01 | 2019-04-05 | 飞思仪表（深圳）有限公司 | A kind of plug-in type differential pressure flowmeter and flow-measuring method |
| CN110672165A (en) * | 2019-11-14 | 2020-01-10 | 上海权宥环保科技有限公司 | Multi-point measurement Pitotbar flow sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131225 Termination date: 20150726 |
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| EXPY | Termination of patent right or utility model |