CN215065030U - Static pressure characteristic testing device of differential pressure transmitter - Google Patents
Static pressure characteristic testing device of differential pressure transmitter Download PDFInfo
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- CN215065030U CN215065030U CN202121215639.3U CN202121215639U CN215065030U CN 215065030 U CN215065030 U CN 215065030U CN 202121215639 U CN202121215639 U CN 202121215639U CN 215065030 U CN215065030 U CN 215065030U
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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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- 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
- G01L27/002—Calibrating, i.e. establishing true relation between transducer output value and value to be measured, zeroing, linearising or span error determination
- G01L27/005—Apparatus for calibrating pressure sensors
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Abstract
The application discloses differential pressure transmitter static pressure characteristic test device, this differential pressure transmitter static pressure characteristic test device includes: a differential pressure transmitter, a piston pressure gauge, a pressure measuring instrument and a pressure regulator; the pressure regulator and the piston type pressure gauge are respectively connected to the high-pressure end and the low-pressure end of the differential pressure transmitter; the pressure measuring instrument is connected in parallel with the high-pressure end and the low-pressure end of the differential pressure transmitter, and a control valve is arranged between the pressure measuring instrument and the low-pressure end of the differential pressure transmitter. The purpose that the error value of the differential pressure transmitter under each pressure point can be obtained after the numerical value of reading the differential pressure transmitter and the pressure measuring instrument is calculated is achieved, the technical effect of quickly and simply evaluating the static pressure characteristic of the differential pressure transmitter is achieved, and the problems that in the related technology, the static pressure characteristic evaluation device of the differential pressure transmitter is complex in operation, high in operation requirement and low in measuring efficiency are solved.
Description
Technical Field
The application relates to the field of differential pressure transmitter detection, in particular to a static pressure characteristic testing device of a differential pressure transmitter.
Background
The high-precision differential pressure transmitter is needed to be used when the effective area of the piston type pressure gauge is verified, so that the static pressure characteristic of the differential pressure transmitter needs to be evaluated before the effective area of the piston is verified, namely, the error values of each upper travel point and each lower travel point under each pressure point of the differential pressure transmitter are integrally evaluated, and the differential pressure transmitter with the precision meeting the requirement is selected. However, the static pressure characteristic evaluation method of the differential pressure transmitter in the related art is carried out by using a standard piston pressure gauge, the judgment of a piston balance point needs to be carried out manually, and the problems of complex operation, high operation requirement and low measurement efficiency exist.
Aiming at the problems of complex operation, high operation requirement and low measurement efficiency of a static pressure characteristic evaluation device of a differential pressure transmitter in the related technology, an effective solution is not provided at present.
SUMMERY OF THE UTILITY MODEL
The main purpose of this application is to provide a differential pressure transmitter static pressure characteristic test device to solve the problem that differential pressure transmitter's static pressure characteristic evaluation device has the operation complicacy among the correlation technique, and the operation requires highly, and measurement of efficiency is low.
In order to achieve the above object, the present application provides a differential pressure transmitter static pressure characteristic testing apparatus, including: a differential pressure transmitter, a piston pressure gauge, a pressure measuring instrument and a pressure regulator; the pressure regulator and the piston type pressure gauge are respectively connected to the high-pressure end and the low-pressure end of the differential pressure transmitter; the pressure measuring instrument is connected in parallel with the high-pressure end and the low-pressure end of the differential pressure transmitter, and a control valve is arranged between the pressure measuring instrument and the low-pressure end of the differential pressure transmitter.
Further, the pressure regulator is connected with the high-pressure end of the differential pressure transmitter through a first pipeline.
Furthermore, the piston type pressure gauge is connected with the low-pressure end of the differential pressure transmitter through a second pipeline.
Furthermore, the pressure measuring instrument is connected in parallel to the first pipeline and the second pipeline through a third pipeline, and the control valve is arranged on the third pipeline.
Further, the control valve is provided as a shutoff valve.
Further, the pressure measuring instrument is a digital pressure gauge or a pressure sensor.
In the embodiment of the application, a differential pressure transmitter, a piston type pressure gauge, a pressure measuring instrument and a pressure regulator are arranged; the pressure regulator and the piston type pressure gauge are respectively connected to the high-pressure end and the low-pressure end of the differential pressure transmitter; the pressure measuring instrument is connected in parallel with the high-pressure end and the low-pressure end of the differential pressure transmitter, the control valve is arranged between the pressure measuring instrument and the low-pressure end of the differential pressure transmitter, the purpose that error values of the differential pressure transmitter at each pressure point can be obtained after the numerical values of the differential pressure transmitter and the pressure measuring instrument are read for calculation is achieved, the technical effect of quickly and simply evaluating the static pressure characteristic of the differential pressure transmitter is achieved, and the problems that a static pressure characteristic evaluating device of the differential pressure transmitter in the related technology is complex in operation, high in operation requirement and low in measuring efficiency are solved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:
FIG. 1 is a schematic structural diagram according to an embodiment of the present application;
wherein, 2 differential pressure transmitter, 6 pressure measurement instrument, 7 control valve, 9 pressure regulator, 10 piston pressure gauge.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used.
In this application, the terms "upper", "lower", "inside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "disposed," "provided," "connected," "secured," and the like are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In addition, the term "plurality" shall mean two as well as more than two.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Before differential pressure transmitter 2 is used, it is necessary to evaluate its error under different static pressure conditions to determine whether differential pressure transmitter 2 meets the use requirements. Need use standard piston pressure gauge among the traditional measurement process, because the piston shape size among the standard piston pressure gauge 1 is fixed, therefore the pressure point of piston is fixed for it is accurate inadequately to differential pressure transmitter 2's measurement, and measurement process needs the manual work to judge whether balanced piston pressure gauge, and the judgement error is big, and the operation requirement is high, and whole test procedure is complicated, and efficiency is lower. The present embodiment thus provides a method of testing the static pressure characteristics of differential pressure transmitter 2 by which the performance of differential pressure transmitter 2 is more accurately demonstrated.
As shown in fig. 1, an embodiment of the present application provides a static pressure characteristic testing apparatus for a differential pressure transmitter, the static pressure characteristic testing apparatus for a differential pressure transmitter, which performs a static pressure characteristic test using a low pressure end as a static pressure condition, and includes: a differential pressure transmitter 2, a piston type pressure gauge 10, a pressure measuring instrument 6 and a pressure regulator 9; wherein, the pressure regulator 9 and the piston type pressure gauge 10 are respectively connected with the high pressure end and the low pressure end of the differential pressure transmitter 2; the pressure measuring instrument 6 is connected in parallel to the high-pressure end and the low-pressure end of the differential pressure transmitter 2, and a control valve 7 is arranged between the pressure measuring instrument 6 and the low-pressure end of the differential pressure transmitter 2.
The test method using the test device comprises the following steps:
connecting a differential pressure transmitter 2 to a piston type pressure gauge 10 and a pressure regulator 9, wherein the pressure regulator 9 can regulate the pressure of the high-pressure end of the differential pressure transmitter 2, and the volume of a pipeline is changed through rotation so as to finely regulate the system pressure, and because the output value of the piston type pressure gauge 10 is not an integer, the system pressure can be finely regulated to the integer through the pressure regulator 9 for convenience of calculation;
connecting a pressure measuring instrument 6 to a high-pressure end and a low-pressure end of the differential pressure transmitter 2 in parallel, wherein the pressure measuring instrument 6 can be a digital pressure measuring instrument or a pressure sensor and has the characteristic of high-precision measurement;
opening a control valve 7, keeping the communication between the high-pressure end and the low-pressure end of the differential pressure transmitter 2, controlling a piston type pressure gauge 10 to enable the system pressure to rise to a measuring point, recording the indication value of the differential pressure transmitter 2 and the indication value Pl of a pressure measuring instrument 6, wherein the pressure values of the high-pressure end and the low-pressure end of the differential pressure transmitter 2 are the same, the pressure of the whole measuring system is balanced, and the pressure Pl of the low-pressure end and the high-pressure end of the differential pressure transmitter 2 is accurately obtained through the pressure measuring instrument 6;
closing the control valve 7, disconnecting the low-pressure end of the differential pressure transmitter 2 from the pressure measuring instrument 6, and keeping the piston type pressure gauge 10 at the working position; the low-pressure end of the differential pressure transmitter 2 is originally communicated with the pressure measuring instrument 6, the volume of a pipeline is changed after the differential pressure transmitter 2 is disconnected, so that the indication value of the differential pressure transmitter 2 can possibly change, and in order to ensure the accuracy of a measuring result, the piston type pressure gauge 10 at the low-pressure end of the differential pressure transmitter 2 needs to be adjusted, so that the piston type pressure gauge 10 is kept unchanged; the control valve is provided as a shut-off valve.
Connecting a pressure regulator 9 to a high-pressure end of a differential pressure transmitter 2, increasing or decreasing the pressure of the high-pressure end of the differential pressure transmitter 2 by controlling the pressure regulator 9, simultaneously obtaining indication value variation of a pressure measuring instrument 6, recording an indication value Ph of the pressure measuring instrument 6 and an indication value delta P of the differential pressure transmitter 2 when the variation reaches a preset up stroke differential pressure point or a preset down stroke differential pressure point1；
At this time, the low-pressure end of differential pressure transmitter 2 is disconnected from pressure regulator 9, i.e. differential pressureThe pressure of the low pressure end of the transmitter 2 is kept unchanged, the pressure of the high pressure end of the differential pressure transmitter 2 is increased through the pressure regulator 9, when the pressure of the high pressure end is increased to a set upper stroke differential pressure point, the pressure measuring instrument 6 obtains the actual pressure Ph of the system, and the differential pressure delta P displayed on the high pressure end and the low pressure end of the differential pressure transmitter 2 is obtained1And obtaining the actual differential pressure delta P at the upper stroke differential pressure point through the actual system pressure Ph-Pl2By Δ P2And Δ P1Obtaining the error value of the differential pressure transmitter 2 under the current upper stroke differential pressure point or the lower stroke differential pressure point, so as to finish the measurement of one upper stroke differential pressure point, repeating the operation until the measurement of other upper stroke differential pressure points is finished, then reducing the pressure of the high-pressure end of the differential pressure transmitter 2 through the pressure regulator 9, finishing the measurement of other lower stroke differential pressure points in the same way, and thus obtaining the error values of a plurality of upper stroke differential pressure points and lower stroke differential pressure points of the differential pressure transmitter 2 under the static pressure condition;
in order to obtain the error values of the differential pressure transmitter 2 under the upper stroke differential pressure point and the lower stroke differential pressure point under other static pressure conditions, after the measurement under one static pressure condition is finished, the pressure measuring instrument 6 is communicated with the low pressure end of the differential pressure transmitter 2, the system pressure is increased to other pressure points through the pressure source 5, and the steps are repeated to finish the error value measurement under the upper stroke differential pressure point and the lower stroke differential pressure point.
And evaluating all error values of the obtained differential pressure transmitter 2 under different static pressure conditions, different upper stroke differential pressure points and lower stroke differential pressure points, and judging whether the error value of the differential pressure transmitter 2 meets the requirement or not. By the method, the error value of the differential pressure transmitter can be more accurately acquired.
Further, the pressure regulator 9 is connected to the high-pressure end of the differential pressure transmitter 2 through a first pipe. Piston gauge 10 is connected to the low-pressure end of differential pressure transmitter 2 via a second line. The pressure measuring instrument 6 is connected in parallel to the first pipeline and the second pipeline through a third pipeline, and the control valve 7 is arranged on the third pipeline.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (6)
1. A static pressure characteristic testing device of a differential pressure transmitter is characterized by comprising: a differential pressure transmitter, a piston pressure gauge, a pressure measuring instrument and a pressure regulator; wherein the content of the first and second substances,
the pressure regulator and the piston type pressure gauge are respectively connected to the high-pressure end and the low-pressure end of the differential pressure transmitter;
the pressure measuring instrument is connected in parallel with the high-pressure end and the low-pressure end of the differential pressure transmitter, and a control valve is arranged between the pressure measuring instrument and the low-pressure end of the differential pressure transmitter.
2. The differential pressure transmitter static pressure characteristic testing apparatus of claim 1, wherein the pressure regulator is connected to the high pressure end of the differential pressure transmitter by a first conduit.
3. The differential pressure transmitter static pressure characteristic testing apparatus of claim 2, wherein the piston gauge is connected to a low pressure end of the differential pressure transmitter through a second conduit.
4. The differential pressure transmitter static pressure characteristic testing apparatus according to claim 3, wherein the pressure gauge is connected in parallel to the first and second pipes through a third pipe, and the control valve is provided on the third pipe.
5. The differential pressure transmitter static pressure characteristic testing apparatus of claim 1, wherein the control valve is provided as a shut-off valve.
6. The differential pressure transmitter static pressure characteristic testing apparatus according to claim 1, wherein the pressure gauge is provided as a digital display type pressure gauge or a pressure sensor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2021104599110 | 2021-04-24 | ||
| CN202110459911 | 2021-04-24 |
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| CN215065030U true CN215065030U (en) | 2021-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121202578.7U Active CN215492196U (en) | 2021-04-24 | 2021-05-29 | Static pressure characteristic testing device of differential pressure transmitter |
| CN202110606944.3A Active CN113432781B (en) | 2021-04-24 | 2021-05-29 | Method for measuring static pressure characteristic of differential pressure transmitter and transmitting quantity value in verification process of piston type pressure gauge |
| CN202121215639.3U Active CN215065030U (en) | 2021-04-24 | 2021-05-29 | Static pressure characteristic testing device of differential pressure transmitter |
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| CN202121202578.7U Active CN215492196U (en) | 2021-04-24 | 2021-05-29 | Static pressure characteristic testing device of differential pressure transmitter |
| CN202110606944.3A Active CN113432781B (en) | 2021-04-24 | 2021-05-29 | 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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Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH692637A5 (en) * | 1997-10-30 | 2002-08-30 | Sm Elektronik Ag | Dynamic pressure generator to generate differential pressures from 0 to 1000 Pascal. |
| JP2006177833A (en) * | 2004-12-24 | 2006-07-06 | Yokogawa Electric Corp | Differential pressure transmitter |
| CN2828776Y (en) * | 2005-06-21 | 2006-10-18 | 上海威尔泰工业自动化股份有限公司 | Static pressure drift testing device of differential transmitter |
| DE102005049870B4 (en) * | 2005-10-18 | 2008-03-27 | Siemens Ag | Method and device for detecting a faulty connection of a differential pressure sensor |
| CN100439891C (en) * | 2006-09-20 | 2008-12-03 | 李丹佳 | Detection method and dedicated equipment for pressure difference measuring device |
| CN101476962B (en) * | 2009-01-20 | 2010-11-03 | 山东省计量科学研究院 | Piston type or buoy type pressure meter effective area measuring method |
| CN201925716U (en) * | 2010-12-17 | 2011-08-10 | 中国测试技术研究院流量研究所 | Metering calibration standard device for liquefied natural gas (LNG) dispenser |
| CN202928741U (en) * | 2012-11-08 | 2013-05-08 | 林华 | Static pressure drift detection device for differential pressure transmitter |
| JP6575337B2 (en) * | 2015-12-07 | 2019-09-18 | 富士電機株式会社 | Differential pressure measuring device, differential pressure measuring method, program |
| CN206387538U (en) * | 2016-12-23 | 2017-08-08 | 北京康斯特仪表科技股份有限公司 | A kind of device for calibrating high static pressure differential pressure device |
| CN207301826U (en) * | 2017-09-21 | 2018-05-01 | 河北省计量监督检测研究院 | Industrial differential pressure control device detection 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 |
| CN108692861B (en) * | 2018-08-13 | 2023-08-01 | 上海市计量测试技术研究院 | Calibrating device and balancing method for piston type pressure gauge |
| CN208902338U (en) * | 2018-10-31 | 2019-05-24 | 天津宏瑞祥仪表科技股份有限公司 | A kind of high static pressure differential pressure transmitter detection device |
| CN111076863A (en) * | 2020-03-04 | 2020-04-28 | 东营职业学院 | Intelligent differential pressure transmitter calibration system |
| CN112556926A (en) * | 2020-12-11 | 2021-03-26 | 上海市计量测试技术研究院 | Automatic detection device and detection method for static pressure performance of differential pressure transmitter |
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- 2021-05-29 CN CN202121202578.7U patent/CN215492196U/en active Active
- 2021-05-29 CN CN202110606944.3A patent/CN113432781B/en active Active
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| CN113432781B (en) | 2023-03-10 |
| CN215492196U (en) | 2022-01-11 |
| CN113432781A (en) | 2021-09-24 |
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