CN213239324U - A verifying attachment for detecting pressure sensor - Google Patents
A verifying attachment for detecting pressure sensor Download PDFInfo
- Publication number
- CN213239324U CN213239324U CN202022065283.1U CN202022065283U CN213239324U CN 213239324 U CN213239324 U CN 213239324U CN 202022065283 U CN202022065283 U CN 202022065283U CN 213239324 U CN213239324 U CN 213239324U
- Authority
- CN
- China
- Prior art keywords
- pressure
- verifying attachment
- detecting
- main part
- pressure sensor
- 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
Images
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
The utility model discloses a verifying attachment for detecting pressure sensor, including the verifying attachment main part, set up in a plurality of in the verifying attachment main part is used for installing pressure sensor's installation unit, with being used for of the cavity intercommunication of verifying attachment main part to carminative first gas access in the cavity of verifying attachment main part, with being used for of the cavity intercommunication of verifying attachment main part the gas-filled second gas access of verifying attachment main part cavity and being used for detecting the pressure detection unit of verifying attachment main part cavity pressure. The device can detect the pressure sensors in batches, and detects whether an error exists between a value detected by the pressure sensors and a standard value so as to detect whether the pressure sensors can be directly used or not, or needs to be corrected again, and unit faults caused by the pressure sensors are reduced.
Description
Technical Field
The utility model relates to a detection device, in particular to verifying attachment for detecting pressure sensor.
Background
Because most of control and alarm of the equipment of the water chilling unit are controlled based on the pressure, particularly the control of superheat degree and supercooling degree directly influences the operation energy efficiency of the unit, the precision requirement on the pressure sensor is high, the precision grade within 0.5% is at least met, and if the pressure sensor exceeds the error, the error control of the equipment can be caused, so that the normal operation of the equipment is influenced.
Although the pressure sensors are all used for product detection when leaving factories, each pressure sensor leaving factories cannot have 100% of detection errors, so that the purchased pressure sensors are directly used for a water chilling unit or other large-scale equipment, and extremely high loss is caused by equipment faults caused by insufficient detection precision of the pressure sensors.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: in order to solve the detection error that pressure sensor probably appears, lead to the obstacle of unit operation, the utility model provides an inspection device for detecting pressure sensor has improved pressure sensor's control accuracy, and then the accurate control supplied materials detects.
The technical scheme is as follows: a verifying attachment for detecting pressure sensor, including the verifying attachment main part, set up in a plurality of in the verifying attachment main part is used for installing pressure sensor's first installation element, with being used for of the cavity intercommunication of verifying attachment main part to carminative first gas access in the cavity of verifying attachment main part, with being used for of the cavity intercommunication of verifying attachment main part the gas-filled second gas access of verifying attachment main part cavity and being used for detecting the pressure detection unit of verifying attachment main part cavity pressure.
The utility model discloses an optional structure does the verifying attachment main part is sealed container.
The utility model discloses an optional structure does first gas access include with the first gas pipeline of the cavity intercommunication of verifying attachment main part and set up in the relief valve on the first gas pipeline.
The utility model discloses an optional structure does the second gas passage include with the second gas line of the cavity intercommunication of verifying attachment main part and set up in pressure ratio control valve on the second gas line.
The utility model discloses an optional structure does the access connection of second gas line has supercharging device.
The utility model discloses an optional structure does pressure sensor and pressure detection unit are connected with the controller respectively.
An optional structure of the present invention is that the pressure detecting unit comprises one or more pressure detectors.
The utility model discloses an optional structure does first installation element is the needle valve.
The utility model discloses an optional structure does pressure detection unit set up in on the first installation element.
The utility model discloses an optional structure does the pressure detection unit pass through the second installation unit install in the verifying attachment main part.
The utility model discloses an optional structure does second installation element is the needle valve.
Has the advantages that: (1) the utility model provides a checking device for detecting the reading values of a plurality of pressure sensors, which determines the checking result by comparing with the pressure detection unit arranged in the detecting device, judges the measuring precision of the pressure sensors, determines that the pressure sensors meet the requirements, and ensures that the pressure sensors are in the error range, thereby ensuring the normal operation of the equipment; (2) the utility model discloses a verifying attachment can connect the pressure sensor quantity of different quantity simultaneously as required, promotes detection efficiency if 32 way pressure detection return circuits that predetermine through detection device, judges the pressure sensor who is not conform to the requirement through the programmable logic controller operation back to give the suggestion.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
Example 1: as shown in fig. 1, the testing device for detecting a pressure sensor in the present embodiment includes a testing device body 1, a plurality of first mounting units 2 for mounting the pressure sensor, which are disposed on the testing device body 1, a first gas passage 3 communicated with a cavity of the testing device body 1 and used for exhausting gas into the cavity of the testing device body 1, a second gas passage 4 communicated with the cavity of the testing device body 1 and used for inflating the cavity of the testing device body 1, and a pressure detecting unit 5 for detecting a cavity pressure of the testing device body 1.
The inspection device main body 1 is a sealed container, a sealed tank body is selected as the inspection device main body 1 in the embodiment, a plurality of pressure sensor interfaces are reserved on the inspection device main body 1 as installation positions, in the embodiment, the first installation unit 2 is a needle valve, and a plurality of pressure sensors 20 capable of detecting simultaneously are reserved on the inspection device main body 1, in the embodiment, 32 pressure sensor interfaces are reserved on the inspection device main body 1, 32 pressure sensors 20 capable of detecting simultaneously are reserved, and when the number of pressure sensors to be detected is less than 32, the needle valve can automatically close the interface positions, so that the sealing of the inspection device is realized.
The first gas passage 3 comprises a first gas pipeline 31 communicated with the cavity of the inspection device main body 1 and a waste gas relief valve 32 arranged on the first gas pipeline 31, the second gas passage 4 comprises a second gas pipeline 41 communicated with the cavity of the inspection device main body 1 and a pressure proportion regulating valve 42 arranged on the second gas pipeline 41, meanwhile, an inlet of the second gas pipeline 41 is connected with a pressurizing device 6, and the pressurizing device 6 fills gas into the inspection device main body 1 through the second gas pipeline 41.
The pressure detecting unit 5 is used to detect the pressure of the testing device body 1, and the pressure detected by the pressure detecting unit 5 is used as a reference pressure (standard pressure). as an alternative, the pressure detecting unit 5 is a calibrated pressure detector provided on the testing device body 1, and the pressure detector is mounted on the testing device body 1 through a second mounting unit 51, as shown in fig. 1, and similarly, the second mounting unit 51 can also select a needle valve as a mounting position. To further simplify the structure, a pressure detector as a detection reference pressure may also be mounted on the first mounting unit 2. In order to further improve the accuracy of the reference pressure, two calibrated pressure detectors may be included in the pressure detecting unit 5, and mounted on the second mounting unit 51 or mounted on the first mounting unit 2.
When practical application, verifying attachment can connect the pressure sensor quantity of different quantity simultaneously as required, promotes detection efficiency, judges the pressure sensor who is not conform to the requirement through control system like PLC operation back to give the suggestion.
The utility model discloses an inspection device confirms the inspection result through the comparison between installing pressure sensor 20 and the pressure detecting element 5 on the installation position. The testing device also comprises a set of device internal standard pressure device, in the embodiment, the internal standard pressure device is a calibrated pressure detector and is arranged on the testing device body 1 through a needle valve, or is arranged on the testing device body 1 through a first mounting unit, and the accuracy of the standard pressure of the testing device is ensured in the testing process.
The utility model discloses a verifying attachment's working method does:
(1) the device was slowly charged before the start of the test by 50% of the pre-charge check pressure of the pressure proportional regulating valve 42, the operating device was self-tested before the internal test, and the control system checked by 1 minute (time settable) cycle comparison to see if the pressure sensor was not tightened and leaking.
(2) After the first step detects that the device is qualified and confirms that the device has no leakage, the pressure proportion regulating valve 42 of the opening device starts to charge the device, in the charging process, the pressure detection unit 5 which is arranged on the inspection device and used for reading the reference pressure detects the real-time pressure in the device, the control system controls the pressure proportion regulating valve 42 to slowly charge the pressure in the inspection device to the set pressure target value according to the real-time pressure obtained by feedback, and then the pressure proportion regulating valve 42 is closed.
(3) The control system judges whether the reading value of the measured pressure sensor exceeds the allowable error by receiving the sampling value of the measured pressure sensor 20 and comparing the sampling value with the set standard pressure value (the reading value of the reference pressure fed back by the pressure detection unit 5).
(4) In order to prevent the error of the measuring result caused by unforeseen factors, the checking device is provided with 3 times of repeated detection, after the first detection is completed, the control system opens the exhaust relief valve 32 to enable the pressure in the checking device to be recovered to the pressure before the test, then the checking device is pressurized again, the pressure in the checking device is filled to the set value in the same way, then the pressure proportional control valve 42 is closed, and then the difference value between the feedback value of each pressure sensor and the standard pressure value is compared.
The pressure sensors passing the three-time comparison and inspection are regarded as qualified, when the error value of the inspection exceeds the set precision range, the man-machine exchange interface of the control system displays and marks the point position of the device where the unqualified pressure sensor is located, the correction coefficient F (F is the actually measured sensor pressure C1/standard pressure C2) required by all the pressure sensors and the comparison reference pressure sensor (pressure detection unit) is calculated, the staff marks the correction coefficient on the corresponding pressure sensors, the correction system is conveniently used for correcting and eliminating the errors of the sensors in the subsequent actual use, and the pressure sensors can more accurately detect the required pressure value.
32 groups of pressure sensors can be simultaneously corrected by adopting an automatic checking device, so that the manual intervention operation is greatly reduced in the process. The time is saved and the working efficiency is improved.
When the deviation of the detected pressure reading value is larger than a set value, the currently detected pressure sensor is considered to be unqualified, and the device gives the interface position of the device where the unqualified pressure sensor is located, so that the unqualified pressure sensor is detected.
Claims (10)
1. The utility model provides an verifying attachment for detecting pressure sensor, characterized in that, including verifying attachment main part (1), set up in a plurality of on verifying attachment main part (1) is used for installing pressure sensor's first installation element (2), with the cavity intercommunication of verifying attachment main part (1) be used for to carminative first gas passage (3) in the cavity of verifying attachment main part (1), with the cavity intercommunication of verifying attachment main part (1) is used for the aerify second gas passage (4) of verifying attachment main part (1) cavity and be used for detecting pressure detecting element (5) of verifying attachment main part (1) cavity pressure.
2. The device for detecting pressure sensors according to claim 1, characterized in that the device body (1) is a sealed container.
3. The device according to claim 1, wherein the first gas passage (3) includes a first gas line (31) communicating with the cavity of the device body (1) and a waste gate valve (32) provided on the first gas line (31).
4. The verifying device for detecting a pressure sensor according to claim 1, characterized in that the second gas passage (4) includes a second gas pipe (41) communicating with a cavity of the verifying device body (1) and a pressure ratio adjusting valve (42) provided on the second gas pipe (41).
5. Checking device for detecting pressure sensors according to claim 4, characterized in that a pressurizing device (6) is connected to the inlet of the second gas line (41).
6. The checking device for detecting a pressure sensor according to claim 1, characterized in that the pressure sensor (20) and the pressure detection unit (5) are respectively connected with a controller.
7. Checking device for detecting pressure sensors according to claim 1, characterized in that the pressure detection unit (5) comprises one or more pressure detectors.
8. The checking device for detecting a pressure sensor according to claim 2, characterized in that the first mounting unit (2) is a needle valve.
9. The checking device for detecting a pressure sensor according to claim 1, characterized in that the pressure detecting unit (5) is provided on the first mounting unit (2).
10. The device for detecting a pressure sensor according to claim 1, wherein the pressure detecting unit (5) is mounted on the device body (1) by a second mounting unit (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022065283.1U CN213239324U (en) | 2020-09-18 | 2020-09-18 | A verifying attachment for detecting pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022065283.1U CN213239324U (en) | 2020-09-18 | 2020-09-18 | A verifying attachment for detecting pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213239324U true CN213239324U (en) | 2021-05-18 |
Family
ID=75876443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022065283.1U Active CN213239324U (en) | 2020-09-18 | 2020-09-18 | A verifying attachment for detecting pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213239324U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116448315A (en) * | 2023-06-12 | 2023-07-18 | 乐山市计量测试所 | Online detection method for pressure gauge |
-
2020
- 2020-09-18 CN CN202022065283.1U patent/CN213239324U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116448315A (en) * | 2023-06-12 | 2023-07-18 | 乐山市计量测试所 | Online detection method for pressure gauge |
| CN116448315B (en) * | 2023-06-12 | 2023-08-29 | 乐山市计量测试所 | Online detection method for pressure gauge |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105387339B (en) | CNG on-site proving methods | |
| CN203643083U (en) | Low temperature pressure sensor automatic calibration device | |
| CN109443662A (en) | A kind of fluidic medium valve tiny leakage test device and method | |
| CN105699040B (en) | Coal pulverizer inlet apparatus for measuring air quantity automatic Verification method and system | |
| CN104833456B (en) | A kind of valve cooling system pressure sensor on-site detecting device and method | |
| CN213239324U (en) | A verifying attachment for detecting pressure sensor | |
| CN103278312B (en) | Method and device for verifying pressure relief valve of transformer | |
| CN114593366B (en) | Monitoring system and monitoring method for hydrogen leakage of hydrogen station | |
| CN113720555A (en) | Device and method for detecting internal leakage of ball valve of oil and gas pipeline | |
| CN216746365U (en) | Hydrogenation machine metering and calibrating device | |
| CN112432741A (en) | Nuclear power station containment pressure monitoring device and monitoring method | |
| CN206311283U (en) | The system for being detected for motor controller sealing property and looking for leak source | |
| CN113567625B (en) | Automatic measuring device for free gas of oil immersed transformer | |
| CN112392800A (en) | Detection and judgment process method for leakage value of low-leakage hydraulic product | |
| CN209169777U (en) | Vacuum oil filling device for transformer | |
| CN201903436U (en) | Pressure-constant device used for nitrogen gas tightness test for plastic fuel tank | |
| CN111896191B (en) | On-site calibration method and auxiliary calibration equipment for integral oil tank leakage detection equipment | |
| CN108397574A (en) | A kind of nuclear power plant's measurement standard soil resistant isolating valve and its application method | |
| CN209247278U (en) | A kind of fluidic medium valve tiny leakage test device | |
| CN110243539B (en) | Online pressure ratio is to detection device | |
| CN215294548U (en) | Standard meter method compressed hydrogen adds mechanism of qi calibrating installation | |
| CN211347365U (en) | Safety valve pressure setting and sealing detection device | |
| CN113418654A (en) | Pressure sensor calibration system and method | |
| JP2618952B2 (en) | Calibration device for differential pressure transmitter | |
| CN112216411A (en) | Primary circuit exhaust method of pressurized water reactor nuclear power station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |