CN113432779B - Pressure/differential pressure transmitter response time testing device and testing method - Google Patents
Pressure/differential pressure transmitter response time testing device and testing method Download PDFInfo
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- CN113432779B CN113432779B CN202110660557.8A CN202110660557A CN113432779B CN 113432779 B CN113432779 B CN 113432779B CN 202110660557 A CN202110660557 A CN 202110660557A CN 113432779 B CN113432779 B CN 113432779B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L25/00—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L27/00—Testing or calibrating of apparatus for measuring fluid pressure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The invention relates to a response time testing device and a response time testing method for a pressure/differential pressure transmitter, wherein the device comprises the following steps: the system comprises a power supply device, a pressure signal generating device, a measured pressure/differential pressure transmitter, a reference dynamic pressure detecting device, a pressure relief device, a multichannel data recording device, a conduction connecting device and first, second, third and fourth pipeline branches; the pressure signal generating device is connected with the conducting connecting device through a first pipeline branch; the pressure relief device is connected with the conduction connection device through a third pipeline branch; the reference dynamic pressure detection device is connected with the conduction connection device through a fourth pipeline branch circuit to generate first induction data; the measured pressure/differential pressure transmitter is connected with the conduction connection device through a second pipeline branch circuit to generate second induction data; the multichannel data recording device is respectively connected with the reference dynamic pressure detection device and the measured pressure/differential pressure transmitter to record first sensing data and second sensing data. By implementing the invention, the response time of the pressure/differential pressure transmitter can be accurately obtained.
Description
Technical Field
The invention relates to the technical field of metering test, in particular to a device and a method for testing response time of a pressure/differential pressure transmitter.
Background
Pressure transmitters are used as important process instruments for monitoring pressure parameters and have very wide application in systems such as nuclear power plant control systems, safety systems and the like. The safety pressure transmitter provides necessary signals for a nuclear power plant protection system and a post-accident monitoring system, and besides conventional performance parameters such as precision and the like, the response time performance index also has strict requirements. Such as emergency shutdown control, signal acquisition, computation, and control output are implemented by the reactor protection system. Because of the safety of the nuclear power plant, the requirement on the response time of the shutdown is very strict, and the indexes related to the response speed of the shutdown mainly comprise the response time of a sensor, the response time of a protection system and the response time of a shutdown breaker. Therefore, how to accurately obtain the response time of the pressure transmitter is important.
Disclosure of Invention
The invention aims to solve the technical problem that the response time of a pressure transmitter cannot be accurately obtained in the prior art, and provides a device and a method for testing the response time of the pressure/differential pressure transmitter.
The technical scheme adopted for solving the technical problems is as follows: a pressure/differential pressure transmitter response time testing device is constructed, comprising: the system comprises a power supply device, a pressure signal generating device, a measured pressure/differential pressure transmitter, a reference dynamic pressure detecting device, a pressure relief device, a multichannel data recording device, a conduction connecting device, a first pipeline branch, a second pipeline branch, a third pipeline branch and a fourth pipeline branch;
the pressure signal generating device is connected with the input end of the conducting connecting device through the first pipeline branch and is used for generating pressure;
the pressure relief device is connected with a third output end of the conduction connection device through the third pipeline branch and is used for relieving the pressure;
the reference dynamic pressure detection device is connected with the power supply device and the second output end of the conduction connection device through the fourth pipeline branch circuit, and is used for receiving the pressure when the pressure is released so as to generate first induction data;
the measured pressure/differential pressure transmitter is connected with the power supply device and is connected with the first output end of the conduction connection device through the second pipeline branch circuit, and is used for receiving the pressure when the pressure is released so as to generate second induction data;
the multichannel data recording device is respectively connected with the reference dynamic pressure detection device and the measured pressure/differential pressure transmitter and is used for recording the first sensing data and the second sensing data, acquiring the starting moment of the second sensing data according to the first sensing data and acquiring the ending moment of the second sensing data, wherein the difference between the ending moment and the starting moment is the response time of the measured pressure/differential pressure transmitter.
In the pressure/differential pressure transmitter response time testing device, the reference dynamic pressure detection device comprises a dynamic pressure sensor.
In the pressure/differential pressure transmitter response time testing device of the invention, the second pipeline branch and the fourth pipeline branch are axisymmetric structures taking the third pipeline branch as a symmetry axis.
In the pressure/differential pressure transmitter response time testing device of the invention, the conduction connection device comprises a four-way valve,
the pressure signal generating device is connected with the first end of the four-way valve through the first pipeline branch, the measured pressure/differential pressure transmitter is connected with the second end of the four-way valve through the second pipeline branch, the pressure relief device is connected with the third end of the four-way valve through the third pipeline branch, and the reference dynamic pressure detecting device is connected with the fourth end of the four-way valve through the fourth pipeline branch.
In the pressure/differential pressure transmitter response time testing device, the second end of the four-way valve is opposite to the fourth end of the four-way valve.
The device for testing the response time of the pressure/differential pressure transmitter further comprises an experiment box, wherein the measured pressure/differential pressure transmitter is arranged in the experiment box.
In the pressure/differential pressure transmitter response time testing device, the pressure relief device comprises a pressure relief electromagnetic valve and a medium collecting device, wherein the first end of the pressure relief electromagnetic valve is connected with the third output end of the conduction connecting device through the third pipeline branch, and the second end of the pressure relief electromagnetic valve is connected with the medium collecting device.
The pressure/differential pressure transmitter response time testing device also comprises a silencing device arranged in the medium collecting device.
In the pressure/differential pressure transmitter response time testing device, the pressure relief electromagnetic valve is a high-pressure resistant electromagnetic valve.
The invention also constructs a pressure/differential pressure transmitter response time testing method, which is realized by the pressure/differential pressure transmitter response time testing device, and comprises the following steps:
s1, triggering the pressure signal generating device to pressurize to a preset pressure value and maintaining pressure balance;
s2, triggering a pressure relief device to start instantaneous pressure relief, and monitoring first sensing data of a reference dynamic pressure detection device through a multi-channel data recording device to obtain pressure relief starting time and pressure relief ending time of the pressure relief process according to the first sensing data;
s3, monitoring second sensing data of the measured pressure/differential pressure transmitter through the multichannel data recording device;
s4, acquiring starting time of the second sensing data according to the pressure relief starting time, and acquiring a time point when the second sensing data meets a preset condition as a termination time of the second sensing data, wherein the termination time is earlier than the pressure relief termination time;
s5, acquiring the time difference between the ending time and the starting time, and taking the time difference as the response time of the pressure measurement/differential pressure transmitter.
The device and the method for testing the response time of the pressure/differential pressure transmitter have the following beneficial effects: the response time of the pressure/differential pressure transmitter can be accurately obtained.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic diagram of a pressure/differential pressure transmitter response time testing apparatus of the present invention;
FIG. 2 is a flow chart of a process of one embodiment of a pressure/differential pressure transmitter response time testing apparatus of the present invention.
Detailed Description
For a clearer understanding of technical features, objects and effects of the present invention, a detailed description of embodiments of the present invention will be made with reference to the accompanying drawings.
As shown in fig. 1, in a first embodiment of a pressure/differential pressure transmitter response time testing apparatus of the present invention, it includes: a power supply device (not shown in the figure), a pressure signal generating device 110, a measured pressure/differential pressure transmitter 130, a reference dynamic pressure detecting device 140, a pressure releasing device 150, a multi-channel data recording device 160, a conductive connecting device 120, a first pipe branch A1, a second pipe branch A2, a third pipe branch A3, and a fourth pipe branch A4; the pressure signal generating device 110 is connected to the input end of the conductive connection device 120 via the first pipeline branch A1, and is used for generating pressure; the pressure relief device is connected to the third output end of the conducting connection device 120 through the third pipeline branch A3, and is used for relieving the pressure; the reference dynamic pressure detecting device 140 is connected to the power supply device and connected to the second output end of the conductive connection device 120 via the fourth pipeline branch A4, and is configured to receive the pressure when the pressure is released, so as to generate first sensing data; the measured pressure/differential pressure transmitter 130 is connected to the power supply device and connected to the first output end of the conductive connection device 120 via the second pipeline branch A2, and is configured to receive the pressure when the pressure is released, so as to generate second sensing data; the multi-channel data recording device 160 is respectively connected to the reference dynamic pressure detecting device 140 and the measured pressure/differential pressure transmitter 130, and is configured to record the first sensing data and the second sensing data, obtain a start time of the second sensing data according to the first sensing data, and obtain a stop time of the second sensing data, where a difference between the stop time and the start time is a response time of the measured pressure/differential pressure transmitter 130. The pressure signal generating device 110 supplies pressure through a pressure connecting pipeline, namely a first pipeline branch A1, and its pressure supply output is connected to the output end of the conducting connection device 120, and three branches, namely a second pipeline branch A2, a third pipeline branch A3 and a fourth pipeline branch A4, are respectively formed through the three output ends of the conducting connection device 120. Wherein the second pipeline branch A2 is connected to the first output end of the conductive connection device 120 and the measured pressure/differential pressure transmitter 130, the third pipeline branch A3 is connected to the third output end of the conductive connection device 120 and the pressure relief device, and the fourth pipeline branch A4 is connected to the second output end of the conductive connection device 120 and the reference dynamic pressure detection device 140. The reference dynamic pressure detection device 140 adopts a dynamic pressure sensor, and the dynamic response time speed is far faster than that of the measured pressure/differential pressure transmitter 130, and the source is effectively traced. In operation, the pressure signal generating device 110 generates a desired pressure as desired and maintains stability to obtain a stable pressure value, which may be preset according to the full scale setting of the pressure/differential pressure transmitter 130 being measured or other specifications. The pressure relief device starts to relieve pressure, and in the pressure relief process of the pressure relief device, the pressure value of the fourth pipeline branch A4 is detected by referring to the dynamic pressure detection device 140, and corresponding first sensing data is generated. Meanwhile, the pressure value of the pressure relief device is detected by the pressure to be measured/differential pressure transmitter 130, and corresponding second sensing data is generated through the pressure value of the second pipeline branch A2. Meanwhile, the first sensing data and the second sensing data are recorded respectively by the multi-channel data recording device 160, and the starting time of the second sensing data is obtained according to the first sensing data. The starting time of pressure relief is taken as the starting time of the second sensing data, and the corresponding time point when the obtained second sensing data meets the preset condition in the second sensing data detection process is taken as the ending time, wherein the ending time of the second sensing data is before the ending time of pressure relief, which is the time point when the first sensing data finishes conversion. The starting time and the ending time of the second sensing data are obtained, and the time between the starting time and the ending time is the detection time of the measured pressure/differential pressure transmitter 130. The preset condition that the second sensing data meets the termination time may be determined by the stable pressure value generated by the pressure signal generating device 110, which may be a preset percentage of the stable pressure value, which may be specifically set according to the test requirement. According to the device, the first sensing data is used as the initial value recording basis of the second sensing data, so that errors between the generated test time and the actual response time of the transmitter due to the fact that the basis for initial value recording is absent, namely that the initial action value of the step signal cannot be accurately recorded, and the step change time recording of the step signal is absent in a conventional pressure/differential pressure transmitter response time testing device are avoided.
Optionally, the second pipeline branch A2 and the fourth pipeline branch A4 are axisymmetric structures with the third pipeline branch A3 as a symmetry axis. That is, by setting the first pipeline branch A1 and the fourth pipeline branch A4 to have a stroke symmetrical structure of the third pipeline branch A3, the pressure relief device 150 is ensured to be as close as possible to the action effect of the first pipeline branch A1 and the fourth pipeline branch A4 when pressure relief is performed, and errors caused by device setting differences are reduced.
Optionally, the on-connection device 120 includes a four-way valve, the pressure signal generating device 110 is connected to a first end of the four-way valve through the first pipeline branch A1, the measured pressure/differential pressure transmitter 130 is connected to a second end of the four-way valve through the second pipeline branch A2, the pressure relief device is connected to a third end of the four-way valve through the third pipeline branch A3, and the reference dynamic pressure detecting device 140 is connected to a fourth end of the four-way valve through the fourth pipeline branch A4. Specifically, the conductive connection device 120 in which three output branches are formed may employ a four-way valve. The first end of the four-way valve is connected with the first pipeline branch A1, the second end of the four-way valve is connected with the second pipeline branch A2, the third end of the four-way valve is connected with the third pipeline branch A3, and the fourth end of the four-way valve is connected with the reference dynamic pressure detection device 140. In an embodiment, the second end and the fourth end of the four-way valve are disposed in a positive opposition.
In one embodiment, the pressure/differential pressure transmitter response time testing apparatus of the present invention further comprises an experiment box 170, wherein the measured pressure/differential pressure transmitter 130 is disposed in the experiment box. The experiment box 170 is used for providing stable temperature and humidity environment simulating the site, and the pressure/differential pressure transmitter with the remote capillary is partially provided, so that the medium performance is greatly influenced by the temperature, and the response time is also influenced. According to the actual use requirement of the site, the transmitter to be tested is placed in an environment experiment box 170 to test the response time under a specific environment.
In an embodiment, the pressure relief device 150 includes a pressure relief electromagnetic valve 151 and a medium collecting device 152, a first end of the pressure relief electromagnetic valve 151 is connected to the third output end of the conductive connection device 120 through the third pipeline branch A3, and a second end of the pressure relief electromagnetic valve 151 is connected to the medium collecting device 152. The pressure relief solenoid valve 151 is used for instantaneously relieving pressure in the device pipeline, and the pressure relief solenoid valve and medium selected according to the different measuring ranges of the measured pressure/differential pressure transmitter 130 are different. Wherein, the pressure relief time of the whole device is far smaller than the response time of the measured pressure/differential pressure transmitter 130 by selecting the pressure relief electromagnetic valve. The data can be initially confirmed by the specifications of each component. The medium collecting device is used for collecting pipeline medium discharged at the rear end of the pressure relief electromagnetic valve during pressure relief. In one embodiment, the pressure relief solenoid valve may be a high pressure resistant solenoid valve to ensure that the device is not affected when the pressure is too high.
In one embodiment, the pressure/differential pressure transmitter response time testing device of the present invention further includes a muffler device 153 disposed within the media collection device 152. The muffler 153 is used for eliminating noise generated by the pressure relief device in the pressure relief process.
In addition, as shown in fig. 2, the pressure/differential pressure transmitter response time testing method is realized based on the pressure/differential pressure transmitter response time testing device. The specific process can comprise the following steps: s1, triggering the pressure signal generating device 110 to pressurize to a preset pressure value and maintaining pressure balance; that is, the pressure signal generating device 110 generates the pressure satisfying the requirement and maintains stability as required to obtain a stable pressure value, i.e., a preset pressure value, which may be preset according to the full range setting of the pressure/differential pressure transmitter 130 to be measured or other technical specification requirements.
S2, triggering a pressure relief device to start instantaneous pressure relief, and monitoring first sensing data of a reference dynamic pressure detection device 140 through a multi-channel data recording device 160 to obtain pressure relief starting time and pressure relief ending time of the pressure relief process according to the first sensing data; specifically, the pressure relief device starts to relieve pressure, and in the pressure relief process, the reference dynamic pressure detection device 140 detects the pressure value of the pressure relief device passing through the fourth pipeline branch A4, and generates corresponding first sensing data. And in the first sensing data detection process, taking the time point of starting the change of the first sensing data as the pressure relief starting time and taking the time point of ending the change of the first sensing data as the pressure relief ending time. The difference between the pressure relief ending time and the pressure relief starting time can be used as the pressure relief time of the whole testing device, the pressure relief time of the whole system can be proved to be far smaller than the response time of the pressure transmitter to be tested according to the pressure relief time, namely the effectiveness of step response of data in the testing of the testing device can be proved, and the accuracy of the testing process can be further verified.
And S3, monitoring second sensing data of the measured pressure/differential pressure transmitter 130 through the multi-channel data recording device 160, specifically, detecting a pressure value through the second pipeline branch A2 in the pressure relief process of the pressure relief device through the measured pressure/differential pressure transmitter 130, and generating corresponding second sensing data.
S4, acquiring the starting time of the second sensing data according to the pressure relief starting time, and acquiring the time point of the second sensing data meeting the preset condition as the ending time of the second sensing data; specifically, the pressure release start time of the first sensing data is taken as the start time of the second sensing data, and in the second sensing data detection process, the corresponding time point when the obtained second sensing data meets the preset condition is taken as the end time, wherein the preset condition that the second sensing data meets the end time can be determined by the stable pressure value generated by the pressure signal generating device 110, which can be a preset percentage of the stable pressure value, and which can be specifically set according to the test requirement. Meanwhile, the termination time of the second sensing data is before the pressure release end time which is the time point when the conversion of the first sensing data is ended. It can be understood that the difference between the pressure release start time and the pressure release end time of the first sensing data is the pressure release time of the pressure release device. It will be appreciated that in practice, the response time of the pressure transmitter being tested is actually much greater than the pressure release time of the system.
S5, obtaining the time difference between the ending time and the starting time, and taking the time difference as the response time of the measured pressure/differential pressure transmitter 130. Namely, the start time and the end time of the second sensing data are obtained, and the time between the start time and the end time is the detection time of the measured pressure/differential pressure transmitter 130.
It is to be understood that the above examples only represent preferred embodiments of the present invention, which are described in more detail and are not to be construed as limiting the scope of the invention; it should be noted that, for a person skilled in the art, the above technical features can be freely combined, and several variations and modifications can be made without departing from the scope of the invention; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (9)
1. A pressure/differential pressure transmitter response time testing apparatus, comprising: the system comprises a power supply device, a pressure signal generating device, a measured pressure/differential pressure transmitter, a reference dynamic pressure detecting device, a pressure relief device, a multichannel data recording device, a conduction connecting device, a first pipeline branch, a second pipeline branch, a third pipeline branch and a fourth pipeline branch;
the pressure signal generating device is connected with the input end of the conducting connecting device through the first pipeline branch and is used for generating pressure;
the pressure relief device is connected with a third output end of the conduction connection device through the third pipeline branch and is used for relieving the pressure;
the reference dynamic pressure detection device is connected with the power supply device and the second output end of the conduction connection device through the fourth pipeline branch circuit, and is used for receiving the pressure when the pressure is released so as to generate first induction data;
the measured pressure/differential pressure transmitter is connected with the power supply device and is connected with the first output end of the conduction connection device through the second pipeline branch circuit, and is used for receiving the pressure when the pressure is released so as to generate second induction data;
the multichannel data recording device is respectively connected with the reference dynamic pressure detection device and the measured pressure/differential pressure transmitter and is used for recording the first sensing data and the second sensing data, acquiring the starting moment of the second sensing data according to the first sensing data and acquiring the ending moment of the second sensing data, wherein the difference between the ending moment and the starting moment is the response time of the measured pressure/differential pressure transmitter; the time point of the beginning change of the first sensing data is taken as the starting time of the second sensing data, and the corresponding time point when the obtained second sensing data meets the preset condition in the second sensing data detection process is taken as the ending time, wherein the preset condition is determined by the stable pressure value generated by the pressure signal generating device; the second pipeline branch and the fourth pipeline branch are in axisymmetric structures taking the third pipeline branch as a symmetry axis.
2. The pressure/differential pressure transmitter response time testing device of claim 1, wherein the conductive connection means comprises a four-way valve,
the pressure signal generating device is connected with the first end of the four-way valve through the first pipeline branch, the measured pressure/differential pressure transmitter is connected with the second end of the four-way valve through the second pipeline branch, the pressure relief device is connected with the third end of the four-way valve through the third pipeline branch, and the reference dynamic pressure detecting device is connected with the fourth end of the four-way valve through the fourth pipeline branch.
3. The pressure/differential pressure transmitter response time testing device of claim 2, wherein the second end of the four-way valve is directly opposite the fourth end thereof.
4. The pressure/differential pressure transmitter response time testing device of claim 1, further comprising an experiment box within which the measured pressure/differential pressure transmitter is disposed.
5. The pressure/differential pressure transmitter response time testing device of claim 1, wherein the pressure relief device comprises a pressure relief solenoid valve and a media collection device, a first end of the pressure relief solenoid valve is connected to the third output end of the conductive connection device via the third pipeline branch, and a second end of the pressure relief solenoid valve is connected to the media collection device.
6. The pressure/differential pressure transmitter response time testing device of claim 5, further comprising a muffler disposed within the media collection device.
7. The pressure/differential pressure transmitter response time testing device of claim 5, wherein the pressure relief solenoid valve is a high pressure resistant solenoid valve.
8. The pressure/differential pressure transmitter response time testing device of claim 1, wherein the reference dynamic pressure detection device comprises a dynamic pressure sensor.
9. A method of testing the response time of a pressure/differential pressure transmitter, characterized in that it is implemented by the pressure/differential pressure transmitter response time testing device according to any one of claims 1 to 8, said method comprising the steps of:
s1, triggering the pressure signal generating device to pressurize to a preset pressure value and maintaining pressure balance;
s2, triggering a pressure relief device to start instantaneous pressure relief, and monitoring first sensing data of a reference dynamic pressure detection device through a multi-channel data recording device to obtain pressure relief starting time and pressure relief ending time of the pressure relief process according to the first sensing data;
s3, monitoring second sensing data of the measured pressure/differential pressure transmitter through the multichannel data recording device;
s4, acquiring the starting time of the second sensing data according to the pressure relief starting time, and acquiring the time point of the second sensing data meeting the preset condition as the ending time of the second sensing data; the preset condition is determined by the stable pressure value generated by the pressure signal generating device;
s5, acquiring the time difference between the ending time and the starting time, and taking the time difference as the response time of the pressure measurement/differential pressure transmitter.
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| AT510562B1 (en) * | 2010-11-18 | 2012-05-15 | Oebb-Technische Services Gmbh | PRESSURE MEASURING DEVICE |
| US10571354B2 (en) * | 2016-08-24 | 2020-02-25 | Nxp Usa, Inc. | System, test chamber, and method for response time measurement of a pressure sensor |
| CN206609562U (en) * | 2017-03-30 | 2017-11-03 | 中广核核电运营有限公司 | A kind of used in nuclear power station differential pressure and pressure transmitter reliability detecting device |
| CN108362436B (en) * | 2018-05-22 | 2024-04-09 | 三门核电有限公司 | System and method for testing response time of pressure/differential pressure transmitter |
| US11346702B2 (en) * | 2019-06-24 | 2022-05-31 | Analysis And Measurement Services Corporation | Methods and apparatus for calibration and response time testing of level sensors |
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