CN111811539B - Hydraulic hydrostatic level precision test experiment platform - Google Patents
Hydraulic hydrostatic level precision test experiment platform Download PDFInfo
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- CN111811539B CN111811539B CN202010672314.1A CN202010672314A CN111811539B CN 111811539 B CN111811539 B CN 111811539B CN 202010672314 A CN202010672314 A CN 202010672314A CN 111811539 B CN111811539 B CN 111811539B
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Abstract
The invention discloses a hydraulic hydrostatic level precision test experimental platform which comprises a hydraulic hydrostatic level connecting module, a temperature and humidity test module and a vibration test module, wherein the hydraulic hydrostatic level connecting module comprises m hydrostatic levels, a liquid storage tank, an air pipe and a liquid pipe, and m is more than or equal to 2; the temperature and humidity testing module comprises a humidifying device for simulating the environment humidity, a heating device for simulating the environment humidity and a hygrothermograph for monitoring the environment temperature and humidity; the vibration testing module comprises a force hammer for simulating a vibration working condition and an LMS testing system for monitoring the vibration excitation; the hygrothermograph is respectively connected with the humiture measuring points through signals, and the LMS testing system is respectively connected with the force hammer and the vibration excitation measuring points through signals. The invention also discloses an experimental method of the hydraulic hydrostatic level precision testing experimental platform, which can effectively test the influence of environmental factors on the testing precision of the hydraulic hydrostatic level.
Description
Technical Field
The invention relates to the technical field of simulation experiments, in particular to a hydraulic hydrostatic level precision test experiment platform.
Background
The hydraulic static level gauge measures the pressure variation of each measuring point by using a hydraulic sensitive unit to measure the variation of the pressure variation value in a liquid storage device of each measuring point relative to a reference point, and calculates the pressure variation of each measuring point so as to solve the settlement variation. The application site comprises the measurement of the differential settlement of various measuring points of large buildings, such as hydropower plants, dams, high-rise buildings, nuclear power plants, hydro-junction projects, railways, subways, high-speed rails and the like. When the test platform is applied to a construction site, the error of the whole test system of the hydraulic hydrostatic level is increased due to environmental factors, and even effective data cannot be tested, so that the test platform for the precision of the hydraulic hydrostatic level is needed, and the influence of the environmental factors on the measurement precision is tested.
Disclosure of Invention
Technical problem to be solved
Based on the problems, the invention provides the hydraulic hydrostatic level precision test experiment platform which can effectively test the influence of environmental factors on the measurement precision of the hydraulic hydrostatic level.
(II) technical scheme
Based on the technical problem, the invention provides a hydraulic hydrostatic level precision test experimental platform which comprises a hydraulic hydrostatic level connecting module, a temperature and humidity test module and a vibration test module, wherein the hydraulic hydrostatic level connecting module comprises m hydrostatic levels, a liquid storage tank, an air pipe, a liquid pipe and a data terminal, m is more than or equal to 2, the liquid storage tank is communicated with the first hydrostatic level through the air pipe and the liquid pipe, and the m hydrostatic levels are communicated through the air pipe and the liquid pipe in sequence; the temperature and humidity testing module comprises a humidifying device for simulating environment humidity, a heating device for simulating environment temperature and a hygrothermograph for monitoring environment temperature and humidity, wherein the heating device and the humidifying device are both positioned in the protective chamber, and the hygrothermograph is respectively connected with each temperature and humidity measuring point through signals; the vibration testing module comprises a force hammer for simulating the working condition of the static level meter under vibration and an LMS testing system for monitoring the vibration excitation, and the LMS testing system is respectively connected with the force hammer and each vibration excitation measuring point through signals; the data terminal is used for data acquisition, processing and display and is respectively in signal connection with the hygrothermograph and the LMS test system.
Furthermore, the hydraulic static level connecting module further comprises a fixing platform for installing the first static level, a lifting platform for installing the 2 nd to the m th static levels and adjusting the installation height, and a clamping device for clamping the static level to be fixed on the lifting platform or the fixing platform, wherein the static level is installed on the lifting platform or the fixing platform through the clamping device.
Furthermore, the experiment platform still includes the withstand voltage tester that is used for examining the withstand voltage test of the electrical safety performance of hydrostatic level appearance, connects hydrostatic level appearance and data terminal.
Furthermore, the temperature and humidity measuring points are positioned on the outer pipe wall of the air pipe and the liquid pipe communicated between the hydrostatic level and the m hydrostatic levels.
Furthermore, the vibration excitation measuring points are distributed on the air pipe and the liquid pipe communicated between the hydrostatic level and the m hydrostatic levels.
Further, the force hammer acts on an excitation point, and the excitation point is one of the first hydrostatic level, a clamping device corresponding to the first hydrostatic level, and a fixed platform.
Furthermore, the trachea is transparent, and trachea and liquid pipe are the curved state.
Furthermore, the hygrothermograph is placed at the same horizontal height position as the first hydrostatic level and fixed on the inner wall of the protection chamber.
Furthermore, the lifting platform is provided with scales to indicate the installation height.
Further, the installation height of the lifting platform takes the installation height of the fixed platform as a base point, and the installation heights of all the static level gauges are kept on the same plane.
(III) advantageous effects
The technical scheme of the invention has the following advantages:
(1) according to the invention, the temperature, humidity and vibration working conditions of a service environment are effectively simulated through the heating device, the humidifying device and the force hammer, so that the influence of environmental factors of temperature, humidity and vibration on the testing precision of the hydraulic static level gauge can be effectively tested through the experiment platform;
(2) the simulation of the installation height of the hydraulic static level is realized through the lifting platform, and an experiment on the influence of the installation height on the test precision of the hydraulic static level can also be carried out;
(3) the invention analyzes a plurality of points of the temperature and humidity measuring point and the vibration excitation measuring point, thereby effectively improving the reliability of the experimental result.
Drawings
The features and advantages of the present invention will be more clearly understood by reference to the accompanying drawings, which are illustrative and not to be construed as limiting the invention in any way, and in which:
FIG. 1 is a schematic structural diagram of an experimental platform for precision testing of a hydraulic hydrostatic level according to an embodiment of the present invention;
in the figure: 1: a liquid storage tank; 2: an air tube; 3: a liquid pipe; 4: a hydrostatic level; 5: an LMS test system; 6: a data terminal; 7: a clamping device; 8: a force hammer; 9: a lifting platform; 10: a humidifying device; 11: a heating device; 12: a hygrothermograph; 13: a fixed platform; 14: a withstand voltage tester.
Detailed Description
The following detailed description of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In a construction site, a service environment of the hydraulic static level comprises temperature, humidity and vibration, so that the influence of environmental factors on the measurement precision of the hydraulic static level needs to be tested by simulating the temperature, the humidity and the vibration of the service environment and testing the influence of the temperature, the humidity and the vibration on the measurement precision of the hydraulic static level.
The invention provides a hydraulic static level precision test experimental platform which is shown in figure 1 and comprises a hydraulic static level connecting module, a temperature and humidity test module, a vibration test module, a pressure resistance tester 14 and a data terminal 6, wherein the hydraulic static level connecting module comprises m static levels 4, a liquid storage tank 1, an air pipe 2, a liquid pipe 3, a clamping device 7, a lifting platform 9 and a fixed platform 13, and m is more than or equal to 2; the temperature and humidity testing module comprises a humidifying device 10, a heating device 11 and a temperature and humidity meter 12; the vibration testing module comprises a force hammer 8 and an LMS testing system 5, and the static water level 4 refers to a hydraulic static water level;
the liquid storage tank 1 is communicated with a first hydrostatic level through the air pipe 2 and the liquid pipe 3, m hydrostatic levels 4 are communicated through the air pipe 2 and the liquid pipe 3 in sequence, m hydrostatic levels 4 are installed on the lifting platform 9 or the fixed platform 13 through the clamping device 7, and only the first hydrostatic level is installed on the fixed platform 13; the hygrothermograph 12 is respectively connected with the temperature and humidity measuring points through signals, the LMS testing system 5 is respectively connected with the force hammer 8 and each vibration excitation measuring point through a connecting line of a sensor, and the hygrothermograph 12, the LMS testing system 5 and the pressure resistance tester 14 are all connected with the data terminal 6 through the connecting line of the sensor.
The air pipe 2 is used for communicating a gas circulation interface of the liquid storage tank 1 with a gas circulation interface of a first hydrostatic level and sequentially communicating gas circulation interfaces of m hydrostatic levels 4; the liquid pipe 3 is used for communicating a liquid circulation interface of the liquid storage tank 1 with a liquid circulation interface of a first hydrostatic level and sequentially communicating liquid circulation interfaces of m hydrostatic levels 4; the air pipe 2 is a transparent air pipe, so that whether foreign matters or unknown impurities appear in the gas circulation pipeline or not can be observed conveniently; the air pipe 2 and the liquid pipe 3 between the m hydrostatic water levels cannot be too short, and have proper bending length, so that when the hydraulic hydrostatic water levels are used for simulating formal work, a communication pipeline between the hydraulic hydrostatic water levels is in a bending state; the first hydrostatic level is guaranteed to be a first hydraulic hydrostatic level communicated with gas and liquid in the liquid storage tank 1, and the connection modes of the rest hydraulic hydrostatic levels are all connected with the previous hydraulic hydrostatic level, so that the consistency of the connection conditions is guaranteed.
The clamping device 7 is used for clamping the static level 4 and fixing the static level on the lifting table 9 or a fixed platform 13, the fixed platform 13 is used for installing a first static level, and the lifting table 9 is used for installing 2 nd to m th static levels and adjusting the installation height; the liquid storage tank 1 is fixed at the high position of one end of the protection room and is 50cm higher than the fixed platform and the tabletop of the lifting platform, so that liquid can conveniently circulate and experimenters can conveniently pass through the liquid storage tank; the fixed platform 13 is provided with a first static level gauge, is placed close to the liquid storage tank 1, and then sequentially places the lifting tables 9, in this embodiment, three lifting tables 9 are sequentially placed, and m is 4; the lifting platform 9 is provided with scales so as to adjust and read the installation height of the 2 nd to the m th static level gauges.
The humidifying device 10 is, for example, a humidifier, the heating device 11 is used for simulating an environmental temperature, for example, a heater is installed in the protection room, so that the situation that the temperature difference and the humidity difference between two ends in the room are too large when heating and humidifying are carried out is avoided, and the temperature and humidity conditions of the hydraulic static levels 4 are consistent; the hygrothermograph 12 is placed at the same horizontal height as the hydraulic hydrostatic level and fixed on the inner wall of the protective room, and the hygrothermograph 12 is used for monitoring the ambient temperature and humidity of the hydrostatic level 4 by monitoring temperature and humidity measuring points.
The hammer 8 is used for simulating the working condition that the hydraulic static level gauge is vibrated, vibration excitation is caused by knocking, the hammer is divided into three excitation points, namely the first static level gauge is directly knocked, the clamping device 7 corresponding to the first static level gauge and the fixed platform 13, so that the simulated vibration condition is achieved, the vibration excitation can be monitored by the LMS test system 5 connected with the hammer 8, and the LMS test system 5 is used for monitoring the vibration excitation of the hammer 8 and each vibration excitation measuring point; the size of the vibration excitation and the position of the vibration can be simulated.
The voltage resistance tester 14 is used for voltage resistance testing of the hydrostatic level 4, and testing the electrical safety performance of the hydrostatic level 4, and is an all digital display voltage resistance tester in this embodiment; and the data terminal 6 is used for acquiring and analyzing specific values of temperature, humidity and vibration excitation of the static level 4, and preparing for temperature, humidity and vibration compensation.
The experiment platform is used for the experiment of the influence of temperature, humidity and vibration on the precision of the static level 4: respectively and fixedly installing the static levels 4 on the fixed platform 13 and the lifting platform 9 by using a clamping device, measuring the installation height by taking the installation height of the fixed platform 13 as a base point, and adjusting the installation height of the lifting platform 9 to ensure that the installation heights of all the static levels are kept on the same plane; building the hydraulic static level precision testing experiment platform and simulating the working condition of the static level 4 during formal work;
then, the heating device 11 and the humidifying device 10 are opened, the temperature and the humidity of a test experiment platform in a sealed environment are changed by using the heating device 11 and the humidifying device 10, the values of the temperature and humidity measuring points measured by the temperature and humidity meter 12 are observed, when the static level 4 is monitored to be at different stable temperature and humidity values required by an experiment, the reading of the temperature and humidity meter 12 and the reading corresponding to the static level 4 are recorded, the data terminal 6 is used for collecting the readings, and the influence of the temperature and the humidity on the precision of the static level 4 is analyzed; the experiment operation is carried out after the required value of the experiment is kept stable for 1 hour, so that the temperature and humidity conditions of the hydraulic static level gauges are consistent; a plurality of temperature and humidity measuring points are arranged and are mainly positioned on the outer pipe wall of an air pipe 2 and a liquid pipe 3 communicated between the hydraulic static leveling instruments and the hydraulic static leveling instruments; by changing the environmental temperature and humidity and by means of the pressure resistance tester 14, the data terminal 6 obtains the response characteristics of hydraulic pressure in the hydraulic static level gauge, and experimental data are provided for a test precision compensation calculation method under the influence of the humidity and the temperature;
applying excitation to simulate vibration of a service environment to the static level 4, switching the position of the excitation point, recording different vibrations through the LMS test system 5, recording readings of the static level 4 corresponding to different vibration conditions, collecting the readings through the data terminal 6, and analyzing the influence of the vibration on the precision of the static level 4; an excitation point and a plurality of vibration excitation measuring points are arranged, the excitation point is one of the three excitation points of the first hydrostatic level, the clamping device 7 corresponding to the first hydrostatic level and the fixed platform 13, and the vibration excitation measuring points are distributed on the hydraulic hydrostatic level and the air pipe 2 and the liquid pipe 3 communicated between the hydraulic hydrostatic level and each hydraulic hydrostatic level; by applying vibration excitation to the excitation point and by means of the LMS test system 5, the data terminal 6 obtains the dynamic response characteristics of the whole test platform, and experimental data are provided for the subsequent installation design optimization and verification of the hydraulic static level;
on the hydraulic static level experiment platform, a heating device 11, a humidifying device 10 and a force hammer 8 form a temperature-humidity-vibration coupling environment, and error control is realized on the hydraulic static level in the temperature-humidity-vibration coupling environment, so that the influence of temperature, humidity and vibration on the precision of the static level 4 is obtained.
The experimental platform of the present invention may also be used for experiments of the effect of the installation height on the accuracy of the hydrostatic level 4: use fixed platform 13's mounting height is the basic point, and the regulation has the scale elevating platform 9 changes correspondingly static level 4's mounting height simulates different mounting heights, again by data terminal 6 gathers each reading, records different mounting heights and corresponding static level 4's reading, and the analysis obtains the mounting height to the influence of static level 4's precision.
In summary, the hydraulic hydrostatic level precision test experimental platform has the following advantages:
(1) according to the invention, the temperature, humidity and vibration working conditions of a service environment are effectively simulated through the heating device, the humidifying device and the force hammer, so that the influence of environmental factors of temperature, humidity and vibration on the testing precision of the hydraulic static level can be effectively tested through the experiment platform;
(2) the simulation of the installation height of the hydraulic static level is realized through the lifting platform, and an experiment on the influence of the installation height on the test precision of the hydraulic static level can also be carried out;
(3) the invention analyzes a plurality of points of the temperature and humidity measuring point and the vibration excitation measuring point, thereby effectively improving the reliability of the experimental result.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.
Claims (7)
1. The test method of the hydraulic static level precision test experiment platform is characterized in that the hydraulic static level precision test experiment platform comprises a hydraulic static level connecting module, a temperature and humidity test module and a vibration test module, wherein the hydraulic static level connecting module comprises m static levels, a liquid storage tank, an air pipe, a liquid pipe and a data terminal, m is more than or equal to 2, the liquid storage tank is communicated with the first static level through the air pipe and the liquid pipe, and the m static levels are communicated through the air pipe and the liquid pipe in sequence; the temperature and humidity testing module comprises a humidifying device for simulating environment humidity, a heating device for simulating environment temperature and a hygrothermograph for monitoring environment temperature and humidity, the heating device and the humidifying device are both positioned in the protection room, and the hygrothermograph is respectively connected with each temperature and humidity measuring point through signals; the vibration testing module comprises a force hammer for simulating the working condition of the static level meter under vibration and an LMS testing system for monitoring the vibration excitation, and the LMS testing system is respectively connected with the force hammer and each vibration excitation measuring point through signals; the data terminal is used for data acquisition, processing and display and is respectively in signal connection with the hygrothermograph and the LMS test system;
the experiment platform is used for the experiment of the influence of temperature, humidity and vibration on the precision of the hydrostatic level: building the precision testing experiment platform of the hydraulic static level gauge, and simulating the working condition of the hydraulic static level gauge during formal work; respectively and fixedly installing a clamping device for the static level on a fixed platform and a lifting platform, measuring the installation height by taking the installation height of the fixed platform as a base point, and adjusting the installation height of the lifting platform to ensure that the installation heights of all the static levels are kept on the same plane;
then, opening the heating device and the humidifying device, changing the temperature and the humidity of a test experiment platform in a sealed environment by using the heating device and the humidifying device, observing the values of the temperature and humidity measuring points measured by the hygrothermograph, recording the reading of the hygrothermograph and the reading corresponding to the hydrostatic level when the hydrostatic level is in different stable temperature and humidity values required by an experiment, acquiring each reading by the data terminal, and analyzing the influence of the temperature and the humidity on the precision of the hydrostatic level; by changing the environmental temperature and humidity and with the help of a pressure tester, the data terminal obtains the response characteristics of hydraulic pressure in the hydraulic static level gauge; the temperature and humidity measuring points are positioned on the outer pipe wall of the air pipe and the liquid pipe communicated between the hydrostatic level and the m hydrostatic level;
applying excitation to simulate vibration of a service environment on the static level, switching positions of excitation points, recording different vibrations through the LMS test system, recording readings of the static level corresponding to different vibration conditions, collecting the readings through the data terminal, and analyzing to obtain the influence of the vibration on the precision of the static level; by applying vibration excitation to the excitation point, the dynamic response characteristic of the whole test platform is obtained by the data terminal by means of an LMS test system; the vibration excitation measuring points are distributed on the air pipe and the liquid pipe communicated between the hydrostatic level and the m hydrostatic levels; the force hammer acts on an excitation point, and the excitation point is one of the first hydrostatic level, a clamping device corresponding to the first hydrostatic level and a fixed platform;
the experimental platform is also used for experiments of the influence of the mounting height on the accuracy of the hydrostatic level: the mounting height of the fixed platform is used as a base point, the lifting platform is adjusted to be provided with scales, the lifting platform is changed to correspond to the mounting height of the static level, different mounting heights are simulated, then the data terminal collects readings, records different mounting heights and corresponding readings of the static level, and the influence of the mounting height on the precision of the static level is analyzed.
2. The method for testing the experimental platform for the precision test of the hydraulic static level gauge according to claim 1, wherein the hydraulic static level gauge connection module further comprises a fixing platform for mounting a first static level gauge, an elevating platform for mounting 2 nd to m th static level gauges and adjusting the mounting height, and a clamping device for clamping the static level gauge to be fixed on the elevating platform or the fixing platform, and the static level gauge is mounted on the elevating platform or the fixing platform through the clamping device.
3. The method for testing the hydraulic hydrostatic level precision test experiment platform is characterized in that the experiment platform further comprises a voltage-resistant tester for testing the electrical safety performance of the hydrostatic level, and the hydrostatic level is connected with a data terminal.
4. The method for testing the experimental platform for the accuracy test of the hydraulic hydrostatic level according to claim 1, wherein the air tube is a transparent air tube, and the air tube and the liquid tube are in a bent state.
5. The method for testing the experimental platform for the accuracy test of the hydraulic hydrostatic level according to claim 1, wherein the thermo-hygrometer is placed at the same level as the first hydrostatic level and is fixed on the inner wall of the protection room.
6. The method for testing the experimental platform for the accuracy test of the hydraulic static level gauge according to claim 2, wherein the lifting platform is provided with scales to indicate the installation height.
7. The method for testing the hydraulic type hydrostatic level precision test experiment platform is characterized in that the installation height of the lifting platform is based on the installation height of the fixed platform, and the installation heights of all the hydrostatic levels are kept on the same plane.
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| CN112815912B (en) * | 2020-12-31 | 2022-04-29 | 中冶建筑研究总院有限公司 | Device and method for detecting vertical displacement of bridge |
| CN113899344B (en) * | 2021-09-01 | 2023-07-28 | 华设设计集团股份有限公司 | High-precision settlement monitoring system and method for long tunnel considering temperature effect |
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