CN110864847A - Calibration method of pump station pressure gauge for cold extrusion process - Google Patents
Calibration method of pump station pressure gauge for cold extrusion process Download PDFInfo
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- CN110864847A CN110864847A CN201810978473.7A CN201810978473A CN110864847A CN 110864847 A CN110864847 A CN 110864847A CN 201810978473 A CN201810978473 A CN 201810978473A CN 110864847 A CN110864847 A CN 110864847A
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- pump station
- pressure gauge
- pressure
- indication value
- calibration
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000000641 cold extrusion Methods 0.000 title claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 238000011065 in-situ storage Methods 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 abstract 1
- 238000000691 measurement method Methods 0.000 abstract 1
- 239000010720 hydraulic oil Substances 0.000 description 5
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses a method for calibrating a pressure gauge of a pump station for a cold extrusion process, wherein a pump station pressure gauge calibrating device is used for respectively connecting a pump station and a puller on the site where the pressure gauge of the pump station is used; buckling a puller switch to a working position; and controlling the pump station to output liquid pressure, wherein the pressure is transmitted to the standard device and the puller by the calibrating device, the indication value of the standard device and the indication value of the pressure gauge of the pump station are read and compared, and if the indication value of the pressure gauge of the pump station is within a set range and the error between the indication value of the standard device and the indication value of the pressure gauge of the pump station is within the range of +/-125 psi (0.861 MPa), the calibration is qualified. The invention adopts a comparative measurement method, and in-situ calibration is carried out on site without disassembling a calibrated pump station pressure gauge; the device is convenient to use on site and simple and convenient to operate.
Description
Technical Field
The invention relates to a method and a device for calibrating a pressure gauge of a pump station for a cold extrusion process, and belongs to the technical field of metering.
Background
The pump station pressure gauge is monitoring and measuring equipment of a pump station used in cold extrusion technology in the fields of aviation manufacturing and the like, and is used for an installation process of a slotted bush in the assembly process of product parts.
At present, the known calibration of a pump station pressure gauge is a calibration method of a common elastic element pressure gauge, and is implemented by adopting off-line calibration, wherein the pump station pressure gauge is detached from a pump station and then is installed on a pressure calibrator, a calibrator is simultaneously installed on the pressure calibrator, hydraulic oil special for the pump station is used as a working medium, a pressure system is formed by the pump station pressure gauge, the pressure calibrator, the calibrator and a pressure pipeline, the pressure calibrator is operated to gradually generate standard pressure in the pressure system, and the indication value of the pressure gauge of the calibrated pump station is compared and read, so that the calibration of the pump station pressure gauge is realized.
The existing method only uses a pump station pressure gauge as a common elastic element pressure gauge for calibration, and cannot simulate the real-time state of the pump station pressure gauge in use. Meanwhile, in the existing method, a pump station pressure gauge needs to be detached from a pump station, so that hydraulic oil in the pump station leaks out, and environmental pollution and hydraulic oil loss are caused. Simultaneously, the pump station pressure gauge is installed inside the pump station, the gauge needs to be installed in the original position of the pump station again after calibration is completed, the tightness of the system is guaranteed, at the moment, the dial plate of the pump station pressure gauge is outwards perpendicular and parallel to the pressure output port of the pump station, the pressure output value is conveniently read in use, the gauge is installed on a standard position and is difficult, and the screw thread of the pump station pressure gauge is easily damaged through frequent disassembly. The pump station manometer can cause the loss of pump station hydraulic oil when dismantling the calibration, need give the hydraulic oil of pump station replenishment loss when reinstalling.
Disclosure of Invention
In order to overcome the defects of the conventional pump station pressure gauge calibration method, the invention provides a calibration method and a calibration device.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a calibration method of a pump station pressure gauge for a cold extrusion process,
firstly, a pump station pressure gauge calibration device is used for respectively connecting a pump station and a puller on the site where a pump station pressure gauge is used;
step two, buckling a puller switch to a working position;
step three, controlling a pump station to output liquid pressure, wherein the pressure is transmitted to a standard device and a drawing device by a calibration device;
and step four, reading and comparing the indication value of the standard device and the indication value of the pressure gauge of the pump station, and if the indication value of the pressure gauge of the pump station is within a set range, and the error between the indication value of the standard device and the indication value of the pressure gauge of the pump station is within the set range, the calibration is qualified.
The calibration device for the pressure gauge of the pump station comprises a standard device and a tee joint, wherein one end of the tee joint is connected with an output pressure port of the pump station through a quick connector, one end of the tee joint is connected with a pressure input port of a puller of the pump station through the quick connector, and the other end of the tee joint is connected with a test port of the standard device; the standard device is arranged in the middle of the T-shaped tee joint and is perpendicular to the other two channels, and the pressure gauge of the calibrated pump station can measure the output pressure of the pump station in real time in the same direction.
The calibration method uses the calibration device of the pump station pressure gauge to carry out on-site in-situ calibration of the pump station pressure gauge, and compared with the traditional calibration method, the used device has a simple structure, can carry out measurement in a real-time state when the pump station pressure gauge is used, and is simple and convenient to operate.
Drawings
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic diagram of the operation of the present invention.
Fig. 2 is a structure diagram of a calibration device for a pressure gauge of a pump station.
Detailed Description
As shown in figures 1 and 2 of the drawings,
the invention relates to a calibration method of a pump station pressure gauge for a cold extrusion process, which comprises the following steps:
on the site of the pump station, a pump station pressure gauge calibration device (2) is respectively connected with the pump station and a puller (3),
the puller (3) is buckled to a working position,
controlling the pump station (1) to output liquid pressure, transmitting the pressure to the standard device (12) and the puller (3) by the pump station pressure gauge calibration device (2), reading and comparing the indication value of the standard device (12) with the indication value of the pump station pressure gauge (4), and when the indication value of the pump station pressure gauge is in the range of 10000psi (68.947 MPa) ± 500psi (3.447 MPa), and the error between the indication value of the standard device and the indication value of the pump station pressure gauge is in the range of ± 125psi (0.861 MPa), the calibration is qualified.
Pump station manometer calibrating device (2), pump station output pressure quick-operation joint (5) concatenate, draw ware (3) and concatenate in drawing ware quick-operation joint (6) with pressure hose (7), operation drawing ware (3) work, and the indication value of pump station manometer (4) and pump station manometer calibrating device (2) is read to the eye measurement.
In the embodiment shown in fig. 2, the tee joint (11) is T-shaped, one end of the tee joint (11) is connected with the quick coupling (14) in a threaded connection mode, the other end of the tee joint (11) is connected with the quick coupling (15) in a threaded connection mode, the middle of the tee joint (1) is connected with the pressure coupling (13) in a threaded connection mode, the standard device (12) is connected with the pressure coupling (13) in a threaded connection mode, and the standard device (12) is vertically installed on the tee joint (11).
Claims (2)
1. A calibration method of a pump station pressure gauge for a cold extrusion process is characterized by comprising the following steps:
firstly, a pump station pressure gauge calibration device is used for respectively connecting a pump station and a puller on the site where a pump station pressure gauge is used;
step two, buckling a puller switch to a working position;
step three, controlling a pump station to output liquid pressure, wherein the pressure is transmitted to a standard device and a drawing device by a calibration device;
and step four, reading and comparing the indication value of the standard device and the indication value of the pressure gauge of the pump station, and if the indication value of the pressure gauge of the pump station is within a set range, and the error between the indication value of the standard device and the indication value of the pressure gauge of the pump station is within the set range, the calibration is qualified.
2. The method for calibrating the pressure gauge of the pump station for the cold extrusion process according to claim 1, wherein the calibration device of the pressure gauge of the pump station comprises a standard device and a tee joint, one end of the tee joint is connected with an output pressure port of the pump station by a quick joint, the other end of the tee joint is connected with a pressure input port of a puller of the pump station by the quick joint, and the other end of the tee joint is connected with a test port of the standard device; the standard is arranged in the middle of the T-shaped tee joint and is perpendicular to the other two channels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810978473.7A CN110864847A (en) | 2018-08-27 | 2018-08-27 | Calibration method of pump station pressure gauge for cold extrusion process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810978473.7A CN110864847A (en) | 2018-08-27 | 2018-08-27 | Calibration method of pump station pressure gauge for cold extrusion process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110864847A true CN110864847A (en) | 2020-03-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810978473.7A Pending CN110864847A (en) | 2018-08-27 | 2018-08-27 | Calibration method of pump station pressure gauge for cold extrusion process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114354061A (en) * | 2021-10-29 | 2022-04-15 | 中国航发西安动力控制科技有限公司 | On-line calibration method of vacuum furnace pressure gauge |
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| US4555093A (en) * | 1982-10-19 | 1985-11-26 | Ex-Cell-O Corporation | Cable pulling device with force indicator and overload protection |
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| CN203376111U (en) * | 2013-07-04 | 2014-01-01 | 中国石油集团川庆钻探工程有限公司 | Pressure gauge online calibration equipment for petroleum drilling operation |
| CN203795426U (en) * | 2014-01-17 | 2014-08-27 | 北京市市政工程研究院 | Automatic tensioning device with adjustable prestress |
| CN104729793A (en) * | 2013-12-19 | 2015-06-24 | 珠海格力电器股份有限公司 | Pressure gauge calibrating device |
| CN105203258A (en) * | 2015-09-21 | 2015-12-30 | 西安近代化学研究所 | Quasi static pressure calibration device of quasi static pressure sensor |
| CN106644262A (en) * | 2016-09-22 | 2017-05-10 | 中车南京浦镇车辆有限公司 | Field pressure calibration test valve and test method for railway vehicles |
| CN206192574U (en) * | 2016-11-02 | 2017-05-24 | 福建上润精密仪器有限公司 | Manometer online calibration device based on three -way cock valve |
| CN206804221U (en) * | 2017-05-23 | 2017-12-26 | 成都飞机工业（集团）有限责任公司 | A kind of vacuum meter on-line calibration room |
| CN108120550A (en) * | 2016-11-30 | 2018-06-05 | 北京航天计量测试技术研究所 | A kind of high-pressure gas pressure field calibration method |
-
2018
- 2018-08-27 CN CN201810978473.7A patent/CN110864847A/en active Pending
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|---|---|---|---|---|
| US4555093A (en) * | 1982-10-19 | 1985-11-26 | Ex-Cell-O Corporation | Cable pulling device with force indicator and overload protection |
| CN202522370U (en) * | 2012-03-23 | 2012-11-07 | 中石化第四建设有限公司 | Pressure gauge joint extension device used for pressure gauge verification bench |
| CN203376111U (en) * | 2013-07-04 | 2014-01-01 | 中国石油集团川庆钻探工程有限公司 | Pressure gauge online calibration equipment for petroleum drilling operation |
| CN104729793A (en) * | 2013-12-19 | 2015-06-24 | 珠海格力电器股份有限公司 | Pressure gauge calibrating device |
| CN203795426U (en) * | 2014-01-17 | 2014-08-27 | 北京市市政工程研究院 | Automatic tensioning device with adjustable prestress |
| CN105203258A (en) * | 2015-09-21 | 2015-12-30 | 西安近代化学研究所 | Quasi static pressure calibration device of quasi static pressure sensor |
| CN106644262A (en) * | 2016-09-22 | 2017-05-10 | 中车南京浦镇车辆有限公司 | Field pressure calibration test valve and test method for railway vehicles |
| CN206192574U (en) * | 2016-11-02 | 2017-05-24 | 福建上润精密仪器有限公司 | Manometer online calibration device based on three -way cock valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114354061A (en) * | 2021-10-29 | 2022-04-15 | 中国航发西安动力控制科技有限公司 | On-line calibration method of vacuum furnace pressure gauge |
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Application publication date: 20200306 |