CN202928741U - Static pressure drift detection device for differential pressure transmitter - Google Patents
Static pressure drift detection device for differential pressure transmitter Download PDFInfo
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- CN202928741U CN202928741U CN 201220615090 CN201220615090U CN202928741U CN 202928741 U CN202928741 U CN 202928741U CN 201220615090 CN201220615090 CN 201220615090 CN 201220615090 U CN201220615090 U CN 201220615090U CN 202928741 U CN202928741 U CN 202928741U
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- differential pressure
- transmitter
- cavity
- detection device
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Abstract
The utility model discloses a static pressure drift detection device for a differential pressure transmitter, which comprises a high-pressure gas source with a pressure reducing valve, and a to-be-detected pressure difference transmitter. The high-pressure gas source and the positive cavity of the to-be-detected pressure difference transmitter are sequentially connected with a first control valve, a first pressure indication unit, an adjustable temperature-variation generation unit and a first pressure storage cavity. The high-pressure gas source and the negative cavity of the to-be-detected pressure difference transmitter are sequentially connected with a second control valve, a second pressure indication unit and a second pressure storage cavity. The to-be-detected pressure difference transmitter is connected in parallel with a differential pressure comparator. The second pressure storage cavity is provided with a damping pressure release valve. The detection device also comprises a first temperature stabilizing unit and a second temperature stabilizing unit. The first temperature stabilizing unit is connected with the first pressure storage cavity. The second temperature stabilizing unit is connected with the second pressure storage cavity. The static pressure drift detection device is simple in structure. Due to the adoption of the temperature stabilizing units, the influence of the detection device on the environment temperature can be reduced. Therefore, the detection accuracy is effectively improved.
Description
Technical field
The utility model relates to a kind of static pressure shift testing apparatus for differential pressure transmitter.
Background technology
Differential pressure transmitter need to carry out the static pressure drift and detect, Chinese patent 2005200427056 discloses a kind of static pressure drift testing device of differential transmitter, it can realize the static pressure drift test to differential pressure transmitter, yet its stability requirement to environment temperature is higher, and adopt pointer pressure also can cause certain reading error, the degree of accuracy that impact detects.
Summary of the invention
The purpose of this utility model is to provide and a kind of environment temperature is required the static pressure shift testing apparatus that is used for differential pressure transmitter lower, that measuring accuracy is high.
the technical scheme that realizes the utility model purpose is a kind of static pressure shift testing apparatus for differential pressure transmitter, comprise the high-pressure air source with reduction valve, tested differential pressure transmitter, the positive chamber of described high-pressure air source and tested differential pressure transmitter is connected with the first operation valve in turn, the first pressure-indication means, temp. controllable becomes generating means and the first storage atmospheric pressure cavity, the negative chamber of described high-pressure air source and tested differential pressure transmitter is connected with the second operation valve in turn, the second pressure-indication means and the second storage atmospheric pressure cavity, described tested differential pressure transmitter is parallel with differential pressure contrast device, described the second storage atmospheric pressure cavity is provided with the damping blowdown valve, also comprise the first steady temperature device, the second steady temperature device, the described first steady temperature device is connected with described the first storage atmospheric pressure cavity, the described second steady temperature device is connected with described the second storage atmospheric pressure cavity.
The temperature compensation generator that the described first steady temperature device, the second steady temperature device comprise environment temperature sensor, are connected with environment temperature sensor.
Described the first pressure-indication means, the second pressure-indication means comprise air pressure inductor, the process chip that is connected with the air pressure inductor, the display that is connected with process chip.
The utlity model has positive effect: of the present utility model simple in structure, increased steady temperature device, can reduce pick-up unit to the impact of environment temperature, effectively improve the degree of accuracy that detects, and pressure-indication means adopts air pressure inductor, process chip and display, can effectively reduce the reading error, accuracy of detection is further improved.
Description of drawings
For content of the present utility model is more likely to be clearly understood, the below is described in further detail the utility model according to specific embodiment also by reference to the accompanying drawings, wherein:
Fig. 1 is structural representation of the present utility model.
Embodiment
(embodiment 1)
Fig. 1 has shown a kind of embodiment of the present utility model, and wherein Fig. 1 is structural representation of the present utility model.
see Fig. 1, a kind of static pressure shift testing apparatus for differential pressure transmitter, comprise the high-pressure air source 2 with reduction valve 1, tested differential pressure transmitter 3, described high-pressure air source 2 is connected with the first operation valve 4 in turn with the positive chamber 31 of tested differential pressure transmitter 3, the first pressure-indication means 5, temp. controllable becomes generating means 6 and the first storage atmospheric pressure cavity 7, described high-pressure air source 2 is connected with the second operation valve 8 in turn with the negative chamber 32 of tested differential pressure transmitter 3, the second pressure-indication means 9 and the second storage atmospheric pressure cavity 10, described tested differential pressure transmitter 3 is parallel with differential pressure contrast device 11, described the second storage atmospheric pressure cavity 10 is provided with damping blowdown valve 12, also comprise the first steady temperature device 13, the second steady temperature device 14, the described first steady temperature device 13 is connected with described the first storage atmospheric pressure cavity 7, the described second steady temperature device 14 is connected with described the second storage atmospheric pressure cavity 10.
The described first steady temperature device 13, the second steady temperature device 14 comprise environment temperature sensor 15, the temperature compensation generator 16 that is connected with environment temperature sensor 15.
Described the first pressure-indication means 5, the second pressure-indication means 9 comprise air pressure inductor 17, the process chip 18 that is connected with air pressure inductor 17, the display 19 that is connected with process chip 18.
Obviously, above-described embodiment of the present utility model is only for the utility model example clearly is described, and is not to be restriction to embodiment of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all embodiments exhaustive.And these belong to apparent variation or the change that connotation of the present utility model extends out and still belong to protection domain of the present utility model.
Claims (3)
1. static pressure shift testing apparatus that is used for differential pressure transmitter, comprise the high-pressure air source with reduction valve, tested differential pressure transmitter, the positive chamber of described high-pressure air source and tested differential pressure transmitter is connected with the first operation valve in turn, the first pressure-indication means, temp. controllable becomes generating means and the first storage atmospheric pressure cavity, the negative chamber of described high-pressure air source and tested differential pressure transmitter is connected with the second operation valve in turn, the second pressure-indication means and the second storage atmospheric pressure cavity, described tested differential pressure transmitter is parallel with differential pressure contrast device, described the second storage atmospheric pressure cavity is provided with the damping blowdown valve, it is characterized in that: also comprise the first steady temperature device, the second steady temperature device, the described first steady temperature device is connected with described the first storage atmospheric pressure cavity, the described second steady temperature device is connected with described the second storage atmospheric pressure cavity.
2. the static pressure shift testing apparatus for differential pressure transmitter according to claim 1, is characterized in that: the temperature compensation generator that the described first steady temperature device, the second steady temperature device comprise environment temperature sensor, are connected with environment temperature sensor.
3. the static pressure shift testing apparatus for differential pressure transmitter according to claim 2 is characterized in that: described the first pressure-indication means, the second pressure-indication means comprise air pressure inductor, the process chip that is connected with the air pressure inductor, the display that is connected with process chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220615090 CN202928741U (en) | 2012-11-08 | 2012-11-08 | Static pressure drift detection device for differential pressure transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220615090 CN202928741U (en) | 2012-11-08 | 2012-11-08 | Static pressure drift detection device for differential pressure transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202928741U true CN202928741U (en) | 2013-05-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220615090 Expired - Fee Related CN202928741U (en) | 2012-11-08 | 2012-11-08 | Static pressure drift detection device for differential pressure transmitter |
Country Status (1)
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| CN (1) | CN202928741U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106092440A (en) * | 2016-08-09 | 2016-11-09 | 江苏方天电力技术有限公司 | A kind of detection device for differential pressure transmitter |
| CN113432781A (en) * | 2021-04-24 | 2021-09-24 | 中国测试技术研究院流量研究所 | Static pressure characteristic test and effective area verification method for piston pressure gauge of differential pressure transmitter |
| CN113532734A (en) * | 2021-04-24 | 2021-10-22 | 中国测试技术研究院流量研究所 | Static pressure characteristic test and effective area verification method for piston pressure gauge of differential pressure transmitter |
-
2012
- 2012-11-08 CN CN 201220615090 patent/CN202928741U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106092440A (en) * | 2016-08-09 | 2016-11-09 | 江苏方天电力技术有限公司 | A kind of detection device for differential pressure transmitter |
| CN106092440B (en) * | 2016-08-09 | 2019-03-05 | 江苏方天电力技术有限公司 | A kind of detection device for differential pressure transmitter |
| CN113432781A (en) * | 2021-04-24 | 2021-09-24 | 中国测试技术研究院流量研究所 | Static pressure characteristic test and effective area verification method for piston pressure gauge of differential pressure transmitter |
| CN113532734A (en) * | 2021-04-24 | 2021-10-22 | 中国测试技术研究院流量研究所 | Static pressure characteristic test and effective area verification method for piston pressure gauge of differential pressure transmitter |
| CN113532734B (en) * | 2021-04-24 | 2022-05-20 | 中国测试技术研究院流量研究所 | Static pressure characteristic test and effective area verification method for piston pressure gauge of differential pressure transmitter |
| CN113432781B (en) * | 2021-04-24 | 2023-03-10 | 中国测试技术研究院流量研究所 | Method for measuring static pressure characteristic of differential pressure transmitter and transmitting quantity value in verification process of piston type pressure gauge |
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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: 20130508 Termination date: 20141108 |
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| EXPY | Termination of patent right or utility model |