CN218937639U

CN218937639U - Calibrating device of intelligent pressure transmitter

Info

Publication number: CN218937639U
Application number: CN202223109417.0U
Authority: CN
Inventors: 李占虎; 李婷婷; 刘勇; 何巍杨; 肖淑国; 孙朝阳
Original assignee: China Petroleum and Chemical Corp; Sinopec Northwest Oil Field Co
Current assignee: China Petroleum and Chemical Corp; Sinopec Northwest Oil Field Co
Priority date: 2022-11-23
Filing date: 2022-11-23
Publication date: 2023-04-28
Anticipated expiration: 2032-11-23

Abstract

The utility model discloses a calibrating device of an intelligent pressure transmitter, which comprises a bearing table, wherein a fluid tank, a pump body and a valve are arranged on the bearing table, an outlet of the fluid tank is communicated with an inlet of the pump body, an outlet of the pump body is communicated with the valve, an outlet of the valve is communicated with a pressure gauge pipeline with one end being in closed arrangement, two openings which are respectively arranged at the upstream and downstream of the pressure gauge pipeline are arranged on the pressure gauge pipeline, one opening is used for being communicated with a standard pressure gauge, the other opening is used for being communicated with the intelligent pressure transmitter to be calibrated, a power supply and an ammeter are also arranged on the bearing table, and the power supply and the ammeter are sequentially and electrically connected with the intelligent pressure transmitter to be calibrated to form a circuit loop. The device adopts a standard meter comparison method and a direct current method to calibrate the calibrated meter, improves the calibration precision of the meter, improves the reliability and the utilization rate of the meter, and reduces the use cost.

Description

Calibrating device of intelligent pressure transmitter

Technical Field

The utility model relates to the technical field of pressure instrument calibration, in particular to a calibration device of an intelligent pressure transmitter.

Background

The pressure instrument that is used for pressure acquisition in the oil field device district generally uses intelligent pressure transmitter, and phenomenon such as distortion, zero drift can appear in some intelligent pressure transmitters of operation, and on-the-spot because of not having suitable calibrating tool, can not in time calibrate the maintenance to the instrument, leads to the data feedback inaccurate, influences normal production operation.

The pressure calibration widely adopted at present mainly comprises the steps of checking, calibrating and maintaining the instrument by a professional calibration unit at regular intervals, but the pressure calibration has two problems: firstly, the test time is uncertain or the period is long, and the timely calibration cannot be realized; secondly, the calibration mode is single, and the calibration is generally carried out by adopting a standard meter comparison method at present, so that the purpose of calibration can be achieved by the method, but long-term operation discovers that a part of meters are eliminated due to 'failure' of calibration due to low referential property of the single calibration method, and the utilization rate of the meters is reduced.

In the oilfield production process, the monitoring data of the pressure instrument is critical to the production, so that the instrument calibration needs to be timely and accurately performed. Therefore, how to provide a calibrating device for a pressure meter, which avoids the above drawbacks, is a technical problem that needs to be solved by those skilled in the art.

Disclosure of Invention

The technical problem to be solved by the utility model is to provide a calibrating device of an intelligent pressure transmitter, which can timely and accurately calibrate an instrument.

The technical scheme adopted for solving the technical problems is as follows:

the utility model provides a calibrating device of intelligent pressure transmitter, includes the plummer, plummer is last to be arranged fluid tank, the pump body, valve, the fluid tank is used for holding fluid, the export of fluid tank communicates to the entry of the pump body, the export of the pump body communicates to the valve, the export of valve communicates to one end for sealing the manometer pipeline that sets up, offer on the manometer pipeline and locate two openings of its upstream and downstream respectively, an opening is used for communicating to standard manometer, another opening is used for communicating to the intelligent pressure transmitter that waits to calibrate, a power, ampere meter have still been arranged on the plummer, the power the ampere meter is connected electrically in proper order with the intelligent pressure transmitter that waits to calibrate and is formed a circuit.

Preferably, the three-way valve further comprises a three-way valve, wherein the three-way valve comprises an adjusting hand wheel, the outlet of the valve is communicated with the inlet of the three-way valve, the first outlet of the three-way valve is communicated with the inlet of the pressure gauge pipeline, and the second outlet of the three-way valve is communicated with the fluid tank.

Preferably, the pump body is a hand pump, and the hand pump includes a pressing handle.

Preferably, the device further comprises a pressure relief valve, and the second outlet of the three-way valve is connected to the fluid tank through the pressure relief valve.

Preferably, the fluid tank is provided with an inflow hole for fluid to be added into the fluid tank.

Preferably, the standard pressure gauge is a common pressure gauge.

The calibrating device of the intelligent pressure transmitter has the technical effects that:

for the intelligent pressure transmitter, the device adopts a standard meter comparison method and a direct current method to calibrate the calibrated meter, so that the calibration precision of the meter is improved, the reliability and the utilization rate of the meter are improved, and the use cost is reduced. The components of the device are arranged on a bearing table, so that the on-site pressure gauge can be calibrated and detected in time. Specifically, the numerical value of the standard pressure gauge is used as a reference reading for comparing the test reading of the intelligent pressure transmitter to be calibrated, and confirming the precision and the pressure numerical accuracy of the intelligent pressure transmitter to be calibrated; the ammeter is used for indicating whether the current value output by the intelligent pressure transmitter to be calibrated in the detection range corresponds to a standard current signal of 4-20 ma; zero point of the intelligent pressure transmitter to be calibrated adopts a zero pressure (normal pressure) mode, verification and detection are carried out through standard pressure gauge comparison and current output 4ma, the maximum range of the intelligent pressure transmitter to be calibrated adopts a manual pressurization mode of a calibrating device, and verification and detection are carried out through standard pressure gauge comparison and current output 20 ma.

Preferably, a three-way valve is arranged, and the pressure of the fluid is finely adjusted through an adjusting hand wheel so as to be convenient for accurate calibration. When the pressure is close to the maximum range of the intelligent pressure transmitter to be calibrated, the valve is closed, and the system pressure of the device is slowly regulated by the regulating hand wheel of the three-way valve, so that the pressure of the intelligent pressure transmitter to be calibrated is displayed to the maximum range.

Drawings

FIG. 1 is a schematic diagram of an embodiment of a calibration apparatus for an intelligent pressure transmitter according to the present utility model.

The reference numerals in fig. 1 are as follows:

the intelligent pressure transmitter comprises a bearing table 1, a fluid tank 2, a 3 hand pump, a 4 valve, a 5-pressure gauge pipeline, a 6-labeling pressure gauge, a 7-to-be-calibrated intelligent pressure transmitter, an 8-power supply, a 9-ammeter, a 10-three-way valve, an 11-adjusting hand wheel, a 12-pressing handle, a 13-pressure relief valve and a 14-inflow hole.

Detailed Description

The present utility model will be described in further detail below.

The present utility model will be described in more detail below with reference to the attached drawings, in which preferred embodiments of the present utility model are shown, it being understood that one skilled in the art can modify the present utility model described herein while still achieving the beneficial effects of the present utility model. Accordingly, the following description is to be construed as broadly known to those skilled in the art and not as limiting the utility model.

In the interest of clarity, not all features of an actual implementation are described. In the following description, well-known functions or constructions are not described in detail since they would obscure the utility model in unnecessary detail. It will be appreciated that in the development of any such actual embodiment, numerous implementation details must be made in order to achieve the developer's specific goals.

In order to make the objects and features of the present utility model more comprehensible, embodiments accompanied with figures are described in detail below. It should be noted that the drawings are in a very simplified form and all employ non-precise ratios, and are merely convenient and clear to aid in the description of the embodiments of the utility model.

The utility model provides a calibrating device of an intelligent pressure transmitter, which comprises a bearing table 1, wherein a fluid box 2, a pump body and a valve 4 are arranged on the bearing table 1, the fluid box 2 is used for containing fluid, an outlet of the fluid box 2 is communicated with an inlet of the pump body, an outlet of the pump body is communicated with the valve 4, an outlet of the valve 4 is communicated with a pressure gauge pipeline 5 with one end being in a closed arrangement, two openings which are respectively arranged at the upstream and downstream of the pressure gauge pipeline 5 are formed in the pressure gauge pipeline 5, one opening is used for being communicated with a standard pressure gauge 6, the other opening is used for being communicated with an intelligent pressure transmitter 7 to be calibrated, a power supply 8 and an ammeter 9 are also arranged on the bearing table 1, and the power supply 8, the ammeter 9 and the intelligent pressure transmitter 7 to be calibrated are sequentially and electrically connected to form a circuit.

For the intelligent pressure transmitter, the device adopts a standard meter comparison method and a direct current method to calibrate the calibrated meter, so that the calibration precision of the meter is improved, the reliability and the utilization rate of the meter are improved, and the use cost is reduced. The components of the device are arranged on a bearing table 1, so that the on-site pressure gauge can be calibrated and detected in time. Specifically, the numerical value of the standard pressure gauge 6 is used as a reference reading for comparing the test reading of the intelligent pressure transmitter 7 to be calibrated, and confirming the precision and the pressure numerical accuracy of the intelligent pressure transmitter 7 to be calibrated; the ammeter 9 is used for indicating whether the current value output by the intelligent pressure transmitter 7 to be calibrated in the detection range corresponds to a standard current signal of 4-20 ma; zero point of the intelligent pressure transmitter 7 to be calibrated adopts a zero pressure (normal pressure) mode, verification detection is carried out through standard pressure gauge comparison and current output 4ma, the maximum range of the intelligent pressure transmitter 7 to be calibrated adopts a manual pressurization mode of a calibrating device, and verification detection is carried out through standard pressure gauge comparison and current output 20 ma.

In a specific embodiment, as shown in fig. 1, the three-way valve 10 further comprises a three-way valve 10, the three-way valve 10 comprises an adjusting hand wheel 11, the outlet of the valve 4 is connected to the inlet of the three-way valve 10, the first outlet of the three-way valve 10 is connected to the inlet of the pressure gauge pipe 5, and the second outlet of the three-way valve 10 is connected to the fluid tank 2.

A three-way valve 10 is arranged, and the pressure of the fluid is finely adjusted through an adjusting hand wheel 11 so as to be convenient for accurate calibration. When the pressure approaches the maximum range of the intelligent pressure transmitter 7 to be calibrated, the valve 4 is closed, and the system pressure of the device is slowly regulated by the regulating hand wheel 11 of the three-way valve 10, so that the pressure of the intelligent pressure transmitter 7 to be calibrated is displayed to the maximum range.

In one embodiment, as shown in fig. 1, the pump body is a hand pump 3, and the hand pump 3 includes a pressing handle 12.

Further, a relief valve 13 is included, and the second outlet of the three-way valve 10 is connected to the fluid tank 2 through the relief valve 13. The relief valve 13 is used for pressure relief.

Wherein the fluid in the fluid tank 2 may be oil.

In one embodiment, as shown in fig. 1, the fluid tank 2 is provided with an inflow hole 14 for fluid to be added to the fluid tank 2.

In one embodiment, as shown in fig. 1, the standard pressure gauge 6 is a normal pressure gauge.

The device calibration method is as follows:

zero calibration of the intelligent pressure transmitter 7 to be calibrated: the intelligent pressure transmitter 7 to be calibrated is installed at an opening of the pressure gauge pipe 5, and the power supply 8 supplies power to the intelligent pressure transmitter 7 to be calibrated and the ammeter 9. Firstly, observing whether a reading 6 of a standard pressure gauge is zero when an intelligent pressure transmitter 7 to be calibrated is zero, and then comparing the current output from the intelligent pressure transmitter 7 to be calibrated to an ammeter 9 with factory zero current of the intelligent pressure transmitter 7 to be calibrated to confirm zero accuracy of the intelligent pressure transmitter 7 to be calibrated;

maximum range calibration of the intelligent pressure transmitter 7 to be calibrated: closing the pressure release valve 13, opening the hand pump 3 and the valve 4, rotating the regulating hand wheel 11 anticlockwise to open the three-way valve 10, pressing the handle 12 to provide pressure for the measuring system through the hand pump 3, closing the valve 4 at the outlet of the hand pump 3 when the pressure approaches the maximum range of the intelligent pressure transmitter 7 to be calibrated, slowly regulating the system pressure clockwise by utilizing the regulating hand wheel 11 to enable the pressure display value of the intelligent pressure transmitter 7 to be calibrated to the maximum range, observing whether the pressure is the display pressure of the intelligent pressure transmitter 7 to be calibrated or not by the standard pressure gauge 6, and observing whether the current meter 9 is the factory maximum range current of the intelligent pressure transmitter 7 to be calibrated or not by adopting a current method.

The foregoing has outlined and described the basic principles, features, and advantages of the present utility model in order that the description that follows is merely an example of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, but rather that the foregoing embodiments and description illustrate only the principles of the utility model, and that the utility model is susceptible to various equivalent changes and modifications without departing from the spirit and scope of the utility model, all of which are intended to be within the scope of the utility model as hereinafter claimed. The scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. The utility model provides a calibrating device of intelligent pressure transmitter, its characterized in that, includes the plummer, plummer is last to have arranged fluid tank, the pump body, valve, the fluid tank is used for holding fluid, the export intercommunication of fluid tank extremely the entry of the pump body, the export intercommunication of the pump body extremely the valve, the export intercommunication of valve is to the manometer pipeline that one end was closed setting, offer on the manometer pipeline and locate two openings of its upper and lower reaches separately, an opening is used for communicating to standard manometer, another opening is used for communicating to the intelligent pressure transmitter that waits to calibrate, plummer is last still to have arranged a power, ampere meter, the power the ampere meter is connected electrically in proper order with the intelligent pressure transmitter that waits to calibrate and forms a circuit.

2. The calibration device of the intelligent pressure transmitter of claim 1, further comprising a three-way valve, the three-way valve comprising an adjusting hand wheel, an outlet of the valve being connected to an inlet of the three-way valve, a first outlet of the three-way valve being connected to an inlet of the pressure gauge pipe, and a second outlet of the three-way valve being connected to the fluid tank.

3. The calibration device of the intelligent pressure transmitter of claim 2, wherein the pump body is a hand pump comprising a pressing handle.

4. The calibration device of the intelligent pressure transmitter of claim 2, further comprising a pressure relief valve through which the second outlet of the three-way valve is connected to the fluid tank.

5. The calibration device of the intelligent pressure transmitter of claim 1, wherein the fluid tank is provided with an inflow hole for fluid to be added to the fluid tank.

6. The calibration device of the intelligent pressure transmitter of claim 1, wherein the standard pressure gauge is a normal pressure gauge.