KR20200001351A - Apparatus and method for testing of pressure sensor - Google Patents

Apparatus and method for testing of pressure sensor Download PDF

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Publication number
KR20200001351A
KR20200001351A KR1020180074204A KR20180074204A KR20200001351A KR 20200001351 A KR20200001351 A KR 20200001351A KR 1020180074204 A KR1020180074204 A KR 1020180074204A KR 20180074204 A KR20180074204 A KR 20180074204A KR 20200001351 A KR20200001351 A KR 20200001351A
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South Korea
Prior art keywords
compressed air
pressure sensor
instantaneous pressure
test
discharge
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KR1020180074204A
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Korean (ko)
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KR102079864B1 (en
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채병만
김기동
박종명
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한국전력공사
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L27/00Testing or calibrating of apparatus for measuring fluid pressure
    • G01L27/007Malfunction diagnosis, i.e. diagnosing a sensor defect
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L27/00Testing or calibrating of apparatus for measuring fluid pressure
    • G01L27/02Testing or calibrating of apparatus for measuring fluid pressure of indicators

Abstract

The present invention relates to an instantaneous pressure sensor test apparatus and a test method, provided in the connecting jig 110 and the connecting jig 110 for connecting the main valve 5 and the instantaneous pressure sensor 10 of the GIS tank (1). It is provided on the test stop valve 115 and the connecting jig 110 to block the gas inside the GIS tank 1 from being discharged to the outside during the test of the instantaneous pressure sensor 10 and is closed by a bolt fastening The bolt 118 may be released by opening and includes an air injection hole 117 into which compressed air for injection of the instantaneous pressure sensor 10 is injected.
The present invention has the advantage that it is possible to check the normal operation of the instantaneous pressure sensor in the field, and that the instantaneous pressure sensor abnormality can be immediately confirmed.

Description

Instantaneous pressure sensor test device and test method {APPARATUS AND METHOD FOR TESTING OF PRESSURE SENSOR}

The present invention relates to an instantaneous pressure sensor test apparatus and a test method, and more particularly to an instantaneous pressure sensor test device and test method for confirming the normal operation of the instantaneous pressure sensor for detecting the instantaneous pressure rise.

Gas Insulated Switchgear (GIS) is a completely sealed circuit breaker, disconnector, busbar, ground switch, and transformer in a metal tank filled with SF6 gas, and confirms that the equipment inside the switchgear maintains sufficient function. Sensors are installed at each point for early diagnosis of the fault and confirmation of the point of failure.

For example, as illustrated in FIG. 1, an instantaneous pressure sensor 10 for detecting an instantaneous pressure increase is installed in the bus disconnection unit to diagnose an internal failure of the GIS. When the bus breaker is built in the GIS tank 1, the bus breaker part becomes. The instantaneous pressure sensor 10 is connected to the main valve 5 of the GIS tank 1 in which the bus breaker is built in via a pipe 3. In addition, the instantaneous pressure sensor 10 operates when the SF6 gas pressure inside the GIS tank 1 changes within a pressure of 0.05 kgf / cm 2 or more within 30 ms.

However, in the field, since the main valve 5 of the GIS tank 1 maintains a constant SF6 gas pressure inside the GIS tank 1, it is difficult to generate a pressure having a change value of 0.05 kgf / cm 2 or more within 30 ms. It is impossible to check the normal operation of 10).

Therefore, at present, only the operation of the instantaneous pressure sensor 10 is confirmed only by a simple contact operation test, and there is a problem in that it is impossible to recognize when the instantaneous pressure sensor 10 is defective and the early diagnosis of the internal failure of the GIS is impossible.

In addition, the instantaneous pressure sensor 10 has a problem in that it takes a long time to normalize the equipment because it is requested by the manufacturer when the abnormality occurs.

Patent Document 1: Registered Patent Publication No. 0852453 (Published June 27, 2006)

An object of the present invention is to test the normal operation of the instantaneous pressure sensor installed in the equipment such as gas insulated switchgear, instantaneous pressure sensor test apparatus and test method to immediately check the presence of the abnormality of the instantaneous pressure sensor to enable the normalization of the equipment To provide.

According to a feature of the present invention for achieving the above object, the present invention is provided in the connecting jig and the connecting jig for connecting the main valve and the instantaneous pressure sensor of the GIS tank and the GIS tank during the test of the instantaneous pressure sensor The test stop valve and the connection jig for blocking the gas inside to be discharged to the outside is provided, the air is injected into the compressed jig for the test of the instantaneous pressure sensor can be opened by closing the bolt, the bolt is closed It includes a dragon hall.

The connecting jig is formed at one end and formed at the other end opposite to the valve connection part connected to the main valve of the GIS tank, and includes a sensor connection part connected to the instantaneous pressure sensor.

The test stop valve is opened when the instantaneous pressure sensor is not tested and closed only when the instantaneous pressure sensor is tested to block the gas inside the GIS tank from being discharged to the outside.

Compressed air generator for generating compressed air and having a compressed air discharge unit for discharging the compressed air to the outside and the compressed air discharge unit of the compressed air generator is connected to the air injection hole of the connecting jig to connect the compressed air to the connecting jig Includes connectors to inject.

The connecting tube is a metal flexible tube.

The compressed air generator includes a power supply lamp for confirming a power supply state of the compressed air generator, a discharge preparation lamp for indicating a discharge standby state of the compressed air, and a pressure gauge for checking an internal compressed air pressure.

The compressed air generator has a test preparation button for testing the discharge of the compressed air and a compressed air release button for the discharge of the compressed air.

The compressed air generator is operated by the test preparation button ON signal and is operated by the air compressor that compresses external air to a predetermined pressure and the compressed air release button ON signal, and connects the pipe connecting the air compressor and the compressed air discharge unit. It includes a check valve for opening and closing and the test ready button OFF signal and an automatic exhaust valve for exhausting the compressed air remaining in the air compressor and the pipe to the outside.

The compressed air generator generates compressed air by compressing external air to a pressure of 0.1 kgf / cm 2.

Closing the test stop valve of the connecting jig connecting the main valve and the instantaneous pressure sensor of the GIS tank to prevent the gas inside the GIS tank from flowing into the instantaneous pressure sensor and fastening the air injection hole of the connecting jig. A step of discharging the gas inside the instantaneous pressure sensor by unscrewing the bolts, and a connecting step of connecting the compressed air discharge unit of the compressed air generator to the air injection hole of the connecting jig with a connecting pipe, and the compressed air generator And an injection step of generating compressed air and releasing the compressed air through the compressed air discharge unit to inject compressed air into the instantaneous pressure sensor, and confirming whether the instantaneous pressure sensor is normally operated.

The constant pressure is a pressure in the range of 0.05 ~ 0.1kgf / ㎠.

The injection step is the step of applying power to the compressed air generator and the test preparation button is turned on to compress the outside air to a predetermined pressure to generate compressed air and to wait for release and the pressure value of the compressed air and the discharge preparation lamp Checking the lighting and if the pressure value of the compressed air satisfies a predetermined pressure and the discharge preparation lamp is lit, releasing the compressed air by activating the compressed air discharge button and releasing the compressed air; Injecting to the instantaneous pressure sensor through a connecting jig.

The checking step checks whether the instantaneous pressure sensor is operating normally by the instantaneous pressure rising alarm of the instantaneous pressure sensor.

When the test preparation button is turned on, an air compressor operates to compress external air to a predetermined pressure to generate compressed air, and a check valve closes a pipe connecting the air compressor and the compressed air discharge part to wait for discharge. When the compressed air discharge button is turned on, the check valve is opened to instantly release compressed air.

In the present invention, since the connecting jig can connect the main valve and the instantaneous pressure sensor of the GIS tank and can selectively connect the compressed air generator, it is possible to check the normal operation of the instantaneous pressure sensor in the field to operate the instantaneous pressure sensor. There is an effect that can improve the reliability.

In addition, the present invention can immediately check the presence or absence of the instantaneous pressure sensor has an effect that can be quickly normalized.

In addition, the present invention can be tested by discharging only a small amount of SF6 gas during the instantaneous pressure sensor test, it is easy to test the operation of the instantaneous pressure sensor without causing environmental pollution problems.

1 is a view showing a state where a conventional instantaneous pressure sensor is installed in a gas insulated switchgear.
2 is a view showing a state in which the connecting jig according to the embodiment of the present invention is connected to the instantaneous pressure sensor installed in the gas insulated switchgear.
3 is a view showing an instantaneous pressure sensor test apparatus according to an embodiment of the present invention.
4 is a view showing the internal structure of a compressed air generator according to an embodiment of the present invention.
5 is a view for explaining the instantaneous pressure sensor test method according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

 As shown in Figure 2, the instantaneous pressure sensor test apparatus of the present invention includes a connecting jig 110 for connecting the main valve 5 and the instantaneous pressure sensor 10 of the GIS tank (1).

When the bus breaker is built in the GIS tank 1, the bus breaker part becomes. The instantaneous pressure sensor 10 is installed to detect the instantaneous pressure rise of the gas inside the GIS tank 1 in which the bus breaker is incorporated. The instantaneous pressure sensor 10 detects an instantaneous gas pressure change amount inside the GIS tank 1.

In FIG. 2, the instantaneous pressure sensor 10 may be installed together with the connecting jig 110 in the pipe 3 connected to the GIS tank 1 and the main valve 5. The pipe 3 may be a pipe formed integrally with the main valve 5.

The connecting jig 110 is formed in a rectangular parallelepiped shape or a cylindrical shape. One end of the connecting jig 110 is provided with a valve connecting portion 111 connected to the connecting portion 6 of the main valve, and the other end is provided with a sensor connecting portion 113 connected with the connecting portion 13 of the instantaneous pressure sensor. The valve connecting portion 111 and the sensor connecting portion 113 communicate with each other so that, when not tested (normally), the SF6 gas of the GIS tank 1 may be supplied to the instantaneous pressure sensor 10 through the connecting jig 110.

The valve connecting portion 111 and the connecting portion 6 of the main valve, the sensor connecting portion 113 and the connecting portion 13 of the instantaneous pressure sensor are connected by fastening nuts 121 and 123 having an airtight function. The valve connecting portion 111 and the sensor connecting portion 113 have a circular outer diameter for fastening with the fastening nuts 121 and 123, and threads are formed in the outer diameter.

The connecting jig 110 includes a test stop valve 115 and an air injection hole 117.

The test stop valve 115 serves to block the gas inside the GIS tank 1 from being discharged to the outside when the instantaneous pressure sensor 10 is tested. In addition, the test stop valve 115 serves to prevent the gas inside the GIS tank 1 from flowing into the instantaneous pressure sensor 10.

The test stop valve 115 opens when the instantaneous pressure sensor 10 is not tested and closes only when the instantaneous pressure sensor 10 is tested so that the gas inside the GIS tank 1 is not discharged to the outside and the instantaneous pressure sensor 10 is opened. Block it from entering

The test stop valve 115 is a valve that can be operated by the tester in the field. Test stop valve 115 is a valve that can be opened and closed by rotating the valve 100% fully closed, 100% fully open state. The test stop valve 115 implements 100% fully closed when the instantaneous pressure sensor 10 is tested and 100% fully open when not tested so that the connecting jig 110 does not affect the normal operation of the GIS. do.

Specifically, when the instantaneous pressure sensor 10 is not tested, the instantaneous pressure sensor 10 should monitor the gas pressure of the GIS tank 1, so that the test stop valve 115 maintains 100% fully open state. When testing the pressure sensor 10, the gas inside the GIS tank 1 should be prevented from entering the instantaneous pressure sensor, so the test stop valve 115 is maintained at 100% closed state.

The air injection hole 117 is injected with compressed air for the test of the instantaneous pressure sensor 10. The air injection hole 117 is closed by fastening the bolt 118 and can be opened by releasing the bolt 118. The bolt 118 may be a special bolt that is fastened to the air injection hole 117 and has a gas tightness retention function to prevent gas leakage through the air injection hole 117. The air injection hole 117 is formed of a drain screw hole formed with a screw thread in the inner diameter so as to easily connect the bolt and the connection pipe 150.

As shown in FIG. 2, the instantaneous pressure sensor test apparatus 100 further includes a compressed air generator 130 and a connection pipe.

Compressed air generator 130 is to test the presence or absence of normal operation of the instantaneous pressure sensor 10 by injecting a pressure of 0.05kgf / ㎠ or more into the instantaneous pressure sensor 10 instantaneously.

The compressed air generator 130 has an air compressor 141 therein to release the compressed air to the outside when the power is applied. The compressed air generator 130 is provided with a compressed air discharge unit 131 for generating compressed air and discharging the compressed air to the outside.

The compressed air generator 130 may generate compressed air of a predetermined pressure and discharge compressed air instantaneously. Compressed air generator 130 may generate a compressed air in the range of 0.05 ~ 0.1kgf / ㎠ to release in a short time within 30ms to enable the test of the normal operation of the instantaneous pressure sensor 10.

The compressed air generator 130 has a power supply lamp 133, a discharge preparation lamp 134, a pressure gauge 135, a test preparation button 137 and a compressed air discharge button 139 on the outer surface.

Compressed air generator 130 is compact and portable because it generates compressed air in the range of 0.05 ~ 0.1kgf / ㎠. Although not shown, the compressed air generator 130 includes a power button for applying power.

The power lamp 133 can check the power supply state of the compressed air generator. The discharge preparation lamp 134 indicates the discharge standby state of the compressed air. The pressure gauge 135 allows to check the internal compressed air pressure.

The test preparation button 137 is a button for testing the release of compressed air. The test preparation button 137 acts to operate the air compressor 141 to compress the outside air to a predetermined pressure and to wait for the discharge. When the test preparation button 137 is turned ON, the air compressor 141 operates to compress external air to a predetermined pressure to generate compressed air, and the compressed air is waited for release.

The compressed air discharge button 139 is a button for discharge of compressed air. The compressed air release button 139 serves to inject the compressed air into the instantaneous pressure sensor 10 in a state in which the compressed air of a predetermined pressure is generated by the test preparation button 137 and is waiting. When the compressed air discharge button 139 is turned on, compressed air is discharged from the compressed air discharge unit 131.

As shown in FIG. 4, the compressed air generator 130 includes an air compressor 141, a check valve 145, and an automatic exhaust valve 147 therein. The air compressor 141 is operated by the test preparation button 137 ON signal and generates compressed air by compressing external air to a predetermined pressure. Since the air compressor 141 generates compressed air in the range of 0.05 to 0.1 kgf / cm 2, a small air compressor is applied.

The check valve 145 is operated by a signal of the compressed air discharge button 139 and opens and closes a pipe 143 connecting between the air compressor 141 and the compressed air discharge part 131. The check valve 145 is opened when the compressed air discharge button 139 is turned on. When the check valve 145 is opened, the compressed air waiting in the air compressor 141 is discharged to the outside through the compressed air discharge unit 131.

The automatic exhaust valve 147 is operated by the test preparation button 137 OFF signal and exhausts the compressed air remaining in the air compressor 141 and the pipe 143 to the outside. The automatic exhaust valve 147 is for automatically exhausting the compressed air remaining in the compressed air generator 130 to the outside after the operation of the instantaneous pressure sensor 10 operation test.

The connection pipe 150 connects the compressed air discharge part 131 of the compressed air generator 130 with the air injection hole 117 of the connection jig 110. The connection pipe 150 injects the compressed air discharged from the compressed air discharge unit 131 into the connection jig 110. The connector 150 is one end 151 is inserted into the compressed air discharge 131 and screwed connected to maintain the airtightness, the other end 153 is inserted into the air injection hole 117 and screwed Can be connected in a fastening manner.

The connection pipe 150 is made of a flexible metal pipe made of metal with flexibility. Since the gas inside the GIS tank 1 is vulnerable to moisture as SF6 gas, a metal flexible pipe is used as the connection pipe 150 to prevent water penetration.

The instantaneous pressure sensor test method includes a blocking step for preventing the gas inside the GIS tank 1 from entering the instantaneous pressure sensor 10, a discharge step for discharging the gas inside the instantaneous pressure sensor 10, and a compressed air generator 130. ) And a step of connecting the connection jig 110 and the injection step of instantaneously injecting the instantaneous pressure sensor 10 by generating compressed air and a checking step of checking whether the instantaneous pressure sensor 10 operates normally.

The shut-off step closes the test stop valve 115 of the connecting jig 110 connecting the main valve 5 and the instantaneous pressure sensor 10 of the GIS tank 1 so that the gas inside the GIS tank 1 is the instantaneous pressure sensor. Prevent entry into (10).

In the discharging step, the bolt 118 fastened to the air injection hole 117 of the connecting jig 110 is discharged to discharge the gas inside the instantaneous pressure sensor 10. The gas discharged is a very small amount of SF6 gas remaining between the instantaneous pressure sensor 10 and the test stop valve 115.

The connecting step connects the compressed air discharge part 131 of the compressed air generator 130 to the air injection hole 117 of the connecting jig 110 with a connection pipe 150.

The injection step generates compressed air of a predetermined pressure with the compressed air generator 130 and releases compressed air through the compressed air discharge unit 131 to allow the compressed air to be instantaneously injected into the instantaneous pressure sensor 10.

The injection step includes applying power (AC 220V) to the compressed air generator 130 and turning on the test preparation button 137 to compress external air to a predetermined pressure to generate compressed air and wait for discharge, Checking the pressure value of the air and the lighting of the discharge preparation lamp 134; and if the pressure value of the compressed air satisfies a predetermined pressure and the emission preparation lamp 134 is turned on, the compressed air discharge button 139 is turned ON. And discharging the compressed air, and injecting the discharged compressed air into the instantaneous pressure sensor 10 through the connection pipe 150. Compressed air has a pressure of 0.05 ~ 0.1kgf / ㎠.

The checking step checks whether the instantaneous pressure sensor 10 operates normally by generating an instantaneous pressure rise alarm of the instantaneous pressure sensor 10 according to the instantaneous injection of compressed air having a pressure of 0.05˜0.1 kgf / cm 2.

The instantaneous pressure sensor 10 only sends an alarm when the gas pressure changes instantaneously according to a predetermined reference value. The instantaneous pressure sensor 10 may be configured to send an alarm by generating a contact signal when the gas instantaneous pressure rise in a contact signal method using a limit switch.

Hereinafter, the operation of the present invention will be described.

In the operation of the present invention will be described the instantaneous pressure sensor test method using the instantaneous pressure sensor test apparatus.

As shown in FIG. 5 (a), the connecting jig 110 connects the main valve 5 and the instantaneous pressure sensor 10 of the GIS tank 1. When not tested, the test stop valve 115 is kept open so that the instantaneous pressure sensor 10 monitors the gas pressure in the GIS tank 1. At this time, the air injection hole 117 is closed by fastening the bolt 118.

Meanwhile, when testing the instantaneous pressure sensor, as illustrated in FIG. 5B, the test stop valve 115 of the connecting jig 110 is closed and the bolt 118 fastened to the air injection hole 117. Loosen to release the gas inside the instantaneous pressure sensor (10).

Next, the compressed air generator 130 is prepared, and the compressed air discharge unit 131 of the compressed air generator 130 is connected to the air injection hole 117 of the connecting jig 110 using the connection pipe 150. .

Next, power is supplied to the compressed air generator 130 to check the lighting of the power lamp 133. When the power lamp 133 is turned on, press the test preparation button 137 to turn it ON. When the test preparation button 137 is turned ON, the air compressor 141 operates to compress external air to 0.1 kgf / cm 2 and wait for release.

In this state, the pressure value of the compressed air and the lighting of the discharge preparation lamp 134 are checked. When the pressure value of the compressed air satisfies 0.1 kgf / cm 2 and the emission preparation lamp 134 is turned on, the compressed air discharge button 139 is pressed. Press ON to operate.

When the compressed air discharge button 139 is turned on, the check valve 145 is opened to release compressed air having a pressure of 0.1 kgf / cm 2 to the compressed air discharge unit 131, and the discharged compressed air is connected through the connection pipe 150. After flowing into the connecting jig 110 is instantaneously injected into the instantaneous pressure sensor 10. Then, it is checked whether the instantaneous pressure increase alarm of the instantaneous pressure sensor 10 occurs.

If the instantaneous pressure increase alarm does not occur, it is determined that the instantaneous pressure sensor 10 is not abnormal.

Afterwards, when the test is finished, the test preparation button 137 is pressed to turn off. When the test preparation button 137 is turned off, the check valve 145 is closed and the automatic exhaust valve 147 is opened to automatically exhaust the compressed air remaining in the compressed air generator 130 to the outside.

Thereafter, when the instantaneous pressure sensor 10 test is completed, the power is turned off in the reverse order of the above-described process, and after canceling the state in which the compressed air generator 130 and the connecting jig 110 are connected to the connection pipe 150, When the bolt is fastened to the air injection hole 117 of the connecting jig 110 and the test stop valve 115 is closed, it is returned to its original state so that the instantaneous pressure sensor 10 can monitor the gas pressure of the GIS tank 1. do.

The present invention described above enables the normal operation confirmation test of the instantaneous pressure sensor in the field, and enables the instant confirmation of the presence of an abnormality of the instantaneous pressure sensor.

In addition, the present invention has a structure in which the connecting jig 110 can connect the main valve 5 and the instantaneous pressure sensor 10 of the GIS tank 1, the structure capable of selectively connecting the compressed air generator 130 Since the momentary pressure sensor is installed in the facility, it is easy to apply.

BEST MODE FOR CARRYING OUT THE INVENTION The present invention has been disclosed in the best embodiments in the drawings and specification. Herein, specific terms have been used, but they are used only for the purpose of describing the present invention and are not used to limit the scope of the present invention as defined in the meaning or claims. Therefore, it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Therefore, the true technical scope of the present invention will be defined by the technical spirit of the appended claims.

1: GIS tank 5: main valve
10: instantaneous pressure sensor 100: instantaneous pressure sensor test apparatus
110: jig 111: valve connection
113: sensor connection 115: test stop valve
117: air injection hole 118: bolt
121,123: tightening nut 130: compressed air generator
131: compressed air discharge portion 133: power lamp
134: discharge preparation lamp 135: pressure gauge
137: test preparation button 139: compressed air release button
141: air compressor 143: valve
145: check valve 147: automatic exhaust valve
150: connector 151: once
153: other end

Claims (14)

  1. A connecting jig connecting the main valve and the instantaneous pressure sensor of the GIS tank;
    A test stop valve provided in the connecting jig and blocking the gas inside the GIS tank from being discharged to the outside when the instantaneous pressure sensor is tested; And
    An air injection hole provided in the connection jig and closed by bolt fastening and capable of releasing the bolt to open and injecting compressed air for testing the instantaneous pressure sensor;
    Instantaneous pressure sensor test apparatus comprising a.
  2. The method according to claim 1,
    The connecting jig
    A valve connection portion formed at one end and connected to a main valve of the GIS tank;
    A sensor connection part formed at the other end opposite to and connected to the instantaneous pressure sensor;
    Instantaneous pressure sensor test apparatus comprising a.
  3. The method according to claim 1,
    The test stop valve is an instantaneous pressure sensor test device, characterized in that the opening of the instantaneous pressure sensor untested and closed only during the test of the momentary pressure sensor to block the gas inside the GIS tank from being discharged to the outside.
  4. The method according to claim 1,
    A compressed air generator for generating compressed air and having a compressed air discharge unit configured to discharge the compressed air to the outside;
    And a connecting tube for connecting the compressed air discharge part of the compressed air generator with the air injection hole of the connecting jig to inject the compressed air into the connecting jig.
  5. The method according to claim 4,
    The connecting pipe is a momentary pressure sensor test apparatus, characterized in that the metal flexible pipe.
  6. The method according to claim 4,
    The compressed air generator
    A power lamp for checking a power-on state of the compressed air generator;
    A discharge preparation lamp indicating a discharge standby state of the compressed air; And
    A pressure gauge for checking the internal compressed air pressure;
    Instantaneous pressure sensor test apparatus characterized in that it comprises a.
  7. The method according to claim 6,
    The compressed air generator
    A test preparation button for testing the discharge of the compressed air; And
    A compressed air release button for discharging the compressed air;
    Instantaneous pressure sensor test device characterized in that it comprises a.
  8. The method according to claim 7,
    The compressed air generator
    An air compressor operated by the test preparation button ON signal and compressing external air to a predetermined pressure;
    A check valve which is operated by the compressed air discharge button ON signal and opens and closes a pipe connecting the air compressor and the compressed air discharge unit; And
    An automatic exhaust valve operated by the test preparation button OFF signal and exhausting the compressed air remaining in the air compressor and the pipe to the outside;
    Instantaneous pressure sensor test apparatus comprising a.
  9. The method according to claim 4,
    The compressed air generator is an instantaneous pressure sensor test device, characterized in that for generating compressed air by compressing the outside air to 0.1kgf / ㎠ pressure.
  10. A shut-off step of preventing a gas inside the GIS tank from entering the instantaneous pressure sensor by closing a test stop valve of the connecting jig connecting the main valve and the instantaneous pressure sensor of the GIS tank;
    A discharging step of releasing the bolt fastened to the air injection hole of the connection jig to discharge the gas inside the instantaneous pressure sensor;
    A connecting step of connecting the compressed air discharge part of the compressed air generator to the air injection hole of the connecting jig with a connecting pipe;
    An injection step of generating compressed air of a predetermined pressure with the compressed air generator and releasing compressed air through the compressed air discharge unit so that compressed air is injected into the instantaneous pressure sensor; And
    A checking step of checking whether the instantaneous pressure sensor is normally operated;
    Instantaneous pressure sensor test method comprising a.
  11. The method according to claim 10,
    The constant pressure is instantaneous pressure sensor test method, characterized in that the pressure in the range of 0.05 ~ 0.1kgf / ㎠.
  12. The method according to claim 10,
    The injection step
    Applying power to the compressed air generator;
    Operating the test preparation button ON to compress external air to a predetermined pressure to generate compressed air and to wait for discharge;
    Checking the pressure value of the compressed air and the lighting of the discharge preparation lamp;
    When the pressure value of the compressed air satisfies a predetermined pressure and the discharge ready lamp is turned on, releasing the compressed air by turning on the compressed air discharge button; And
    Injecting the discharged compressed air into the instantaneous pressure sensor through the connecting pipe and the connecting jig;
    Instantaneous pressure sensor test method comprising a.
  13. The method according to claim 10,
    The confirmation step is
    The instantaneous pressure sensor test method, characterized in that whether the instantaneous pressure rise alarm of the instantaneous pressure sensor occurs or not the normal operation of the instantaneous pressure sensor.
  14. The method according to claim 12,
    When the test preparation button is turned on, an air compressor operates to compress external air to a predetermined pressure to generate compressed air, and a check valve closes a pipe connecting the air compressor and the compressed air discharge part to wait for discharge.
    And a check valve is opened when the compressed air discharge button is turned on, and the compressed air is momentarily discharged.
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JP2009014604A (en) * 2007-07-06 2009-01-22 Bon Koatsu Kogyo Kk Pressure inspection tool
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KR101444921B1 (en) * 2013-11-19 2014-09-26 (주)와이즈산전 APPARATUS AND METHOD FOR test of instant pressure rise detecting switch
CN203981343U (en) * 2014-08-08 2014-12-03 舟山市质量技术监督检测研究院 A kind of for the online combination valve detecting of tensimeter
CN205027482U (en) * 2015-09-08 2016-02-10 吕平 Portable pressure measurement
KR101762109B1 (en) * 2017-03-20 2017-08-04 동영테크원주식회사 Pressure generator for correcting pressure transmitter

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