CN211121956U - Portable pressure protection device comprehensive calibration device - Google Patents

Abstract

The utility model relates to matching inspection equipment for large-scale oil-filled equipment in a substation (converter station), in particular to a comprehensive inspection device for portable pressure protection devices. The utility model is characterized in that it comprises an air compressor (2), the air compressor (2) is communicated with the inlet of the air storage tank (3) through the air pipeline (17), and the outlet of the air storage tank (3) is connected through the air pipeline (17) communicates with the inlet of the first solenoid valve (6), the outlet of the first solenoid valve (6) is provided with an exhaust hole (7), and the outlet of the gas storage tank (3) also passes through the gas pipeline (17) ) are sequentially connected to the second solenoid valve (8), the throttle valve (9), the pressure protection device test port (10) and the test end of the pressure sensor (13), the signal output end of the pressure sensor (13) is connected to the control device (14) CONNECTIONS. The utility model has a portable design, is easy to assemble on site, and the pressure release device can be quickly installed and put into testing.

Description

Portable pressure protection device comprehensive calibration device

technical field

The utility model relates to matching inspection equipment for large-scale oil-filled equipment in a substation (converter station), in particular to a comprehensive inspection device for portable pressure protection devices.

Background technique

At present, the relevant institutions at home and abroad use the direct calibration method for the calibration of pressure protection devices. , the opening and closing pressure verification of the existing calibration device needs to be carried out on two different test tanks, the pressure relief valves of different diameters need to be carried out on multiple test tanks with different volumes, and the sealing performance needs to be carried out on special equipment. , the work efficiency is low; second, the automation degree of the calibration process is low, and the pressure test is judged by the pressure gauge indication, and the accuracy cannot be guaranteed.

Utility model content

The purpose of the utility model is to provide a portable comprehensive calibration device for pressure protection devices, which has a portable design, is easy to assemble on site, and can be quickly installed and put into testing for the pressure release device.

A portable pressure protection device comprehensive calibration device, which is special in that it includes an air compressor, the air compressor is communicated with the inlet of an air storage tank through an air pipeline, and the outlet of the air storage tank is connected with the first through the air pipeline. The inlet of a solenoid valve is in communication, the outlet of the first solenoid valve is provided with an exhaust hole, and the outlet of the gas storage tank is also connected to the second solenoid valve, the throttle valve, the test port of the pressure protection device and the pressure sensor in sequence through the gas pipeline. The signal output end of the pressure sensor is connected to the control device, and the control end of the first solenoid valve and the control end of the second solenoid valve are also connected to the control device respectively; wherein the pressure protection device test port is provided with at least A test valve is thus connected to the pressure relief valve to be measured or the pressure to be measured snap-action relay.

The control device adopts a PLC or a single-chip microcomputer, and the control device is provided with a man-machine interface or is connected with an operating computer through Ethernet.

A pressure gauge is installed on the top of the gas storage tank and a drain hole is installed at the bottom.

Compared with the prior art, the advantages of the calibration device of the present utility model are: the device utilizes the portable pressure protection device comprehensive calibration device, which is suitable for disassembling the pressure release device from the converter transformer during on-site maintenance, and quickly installs it on the test device. On, through pressurization, the intelligent controller records the pressure rise curve and the action value of the pressure release device, and judges whether the pressure release device is reliable by comparing the action set value. The portable pressure protection device comprehensive calibration device has a portable design and is easy to assemble on site, and the pressure release device can be quickly installed and put into testing. The specific parameters of the comprehensive calibration device for portable pressure protection devices meet national standards to ensure that the measurement data is true and effective. Of course, any product implementing the present invention does not necessarily need to achieve all the above-mentioned technical effects at the same time.

Description of drawings

FIG. 1 is a schematic diagram of the comprehensive calibration device of the present invention.

Detailed ways

As shown in FIG. 1 , the utility model discloses a comprehensive calibration device for portable pressure protection devices, including an integrated oil-free air compressor 2, which is connected to the control device 14 and the control device 14 through wires respectively. The second solenoid valve 8 is connected; the second solenoid valve 8 is connected with the control device 14 through the wire; the second solenoid valve 8 is sequentially connected with the throttle valve 9 and the pressure protection device test port 10 through the gas pipeline 17, The pressure protection device test port 10 is sequentially connected with a pressure sensor 13 and a control device 14 through wires; the pressure protection device test port 10 is sequentially connected with a detection unit and a control device 14, and the control device 14 is wired or wireless through Ethernet. The mode is connected to the operating computer 16, that is, the computer controls the action of the control device or directly controls the action of the control device through the man-machine interface.

Further, the integrated oil-free air compressor 2 includes an air compressor 2, and the air compressor 2 is connected with an air storage tank 3, and a pressure gauge 4 is installed on the top of the air storage tank 3. A drain port is arranged at the bottom of the tank 3 , the air storage tank 3 is respectively connected with a first solenoid valve 6 and a second solenoid valve 8 through an air pipeline 17 , and an exhaust hole 7 is installed on the top of the first solenoid valve 6 . The integrated oil-free air compressor 2 is connected to the control device 14 through the first solenoid valve 6 . The detection unit includes a pressure release valve 11 and a pressure quick-action relay 12, and the pressure protection device test port 10 is respectively connected with a pressure release valve 11 and a pressure quick-action relay 12, and the pressure quick-action relay 12 is connected to the The device 14 is connected.

The embodiments of the present invention will be described in detail with the following examples, so as to fully understand and implement the implementation process of how the present invention applies technical means to solve technical problems and achieve technical effects.

Example 1:

The utility model discloses a comprehensive calibration device for a portable pressure protection device, as shown in FIG. 1 , comprising an integrated oil-free air compressor 2, the integrated oil-free air compressor 2 is connected to a control device 14 and a control device 14 through wires respectively. The second solenoid valve 8 is connected; the second solenoid valve 8 is connected with the control device 14 through the wire; the second solenoid valve 8 is sequentially connected with the throttle valve 9 and the pressure protection device test port 10 through the gas pipeline 17, The pressure protection device test port 10 is sequentially connected with a pressure sensor 13 and a control device 14 through wires; the pressure protection device test port 10 is sequentially connected with a detection unit 18 and a control device 14, and the control device 14 is connected with the Ethernet 15. The operating computer 16 is connected.

Among them, the integrated oil-free air compressor 2 provides an air source and is connected to the air storage tank 3, and a pressure gauge 4, a solenoid valve, etc. are installed on the tank body at the same time. The device occupies a small volume, has a high degree of integration, and is easy to carry. The control device 14 collects the pressure data sent by the pressure sensor 13, with high precision and accurate data.

Optionally, the integrated oil-free air compressor 2 includes an air compressor 2, the air compressor 2 is connected with an air storage tank 3, and a pressure gauge 4 is installed on the top of the air storage tank 3. A drain port 5 is arranged at the bottom of the air tank 3, the air storage tank 3 is respectively connected with a first solenoid valve 6 and a second solenoid valve 8 through an air pipeline 17, and an exhaust hole 7 is installed on the top of the first solenoid valve 6. . Optionally, the integrated oil-free air compressor 2 is connected to the control device 14 through the first solenoid valve 6 . Optionally, the detection unit 18 includes a pressure relief valve 11 and a pressure snap-action relay 12, and the pressure protection device test port 10 is respectively connected with an installation pressure relief valve 11 and a pressure snap-action relay 12. 12 is connected to the control device 14 by wires. In addition, the pressure protection device test port 10 can simultaneously check the pressure relief valve 11 and the pressure quick-action relay 12, which greatly improves the maintenance efficiency.

The radius of the test port 10 of the pressure protection device can be adjusted, and can be used for calibration of pressure relief valves 11 and pressure quick-action relays 12 of different diameters. When the device starts the opening pressure and closing pressure test, the control device 14 controls the intake solenoid valve and collects the data of the pressure sensor 13 in real time to obtain the opening pressure value, the aging opening pressure value and the closing pressure value of the pressure relief valve 11 and display them. On the display, and simultaneously collect the signal contact of the pressure relief valve 11. Optionally, when the tightness test is started, the control device 14 controls the intake solenoid valve to enter an appropriate amount of gas, collects the pressure in real time through the high-precision pressure sensor 13, and controls the operation of each component through the control device 14 to complete the tightness calibration of the pressure release valve 11. test.

The utility model uses the device as a pressure protection device calibration device for large-scale oil-filled equipment in a substation (converter station), and greatly saves time in the failure inspection and processing of the pressure protection device, and effectively guarantees the stable operation of the substation (converter station).

The utility model discloses a comprehensive calibration device for a portable pressure protection device, which comprises an integrated oil-free air compressor 2, and the integrated oil-free air compressor 2 is connected to a control device 14 and a second solenoid valve 8 through wires respectively. connection; the second solenoid valve 8 is connected with a control device 14 through a wire; the second solenoid valve 8 is sequentially connected with a throttle valve 9 and a pressure protection device test port 10 through a gas pipeline 17, and the pressure protection device test The port 10 is sequentially connected with a pressure sensor 13 and a control device 14 through wires; the pressure protection device test port 10 is sequentially connected with a detection unit and a control device 14, and the control device 14 is connected with the operation computer 16 through Ethernet. The utility model utilizes the portable pressure protection device comprehensive verification device, which has the advantages of easy operation, light weight, etc., can conveniently and quickly perform comprehensive verification of the pressure protection device of the substation (converter station), and greatly improves the operation reliability of the equipment.

The use method and working principle of the present utility model are:

The comprehensive calibration device of the portable pressure protection device of the present invention is suitable for on-site maintenance. When in use, the pressure release device is disassembled from the converter, quickly installed on the test device of the present invention, and connected to the air storage tank 3 through the air compressor 2 Pressurizing, the test valve on the test port 10 of the pressure protection device is connected to the pressure relief valve 11 to be measured or the quick-action relay 12 of the pressure to be measured (the control terminal of the relay is also connected to the control device at this time), and the control device automatically records the pressure rise curve and The action value of the pressure release device, by comparing the action set value (preset according to the detection standard) to determine whether the pressure release device (the pressure release valve 11 to be measured or the pressure quick-action relay 12 to be measured) is reliable, the specific judgment method and procedure adopt In the existing conventional technology, the judgment result is finally given through the man-machine interface or the operating computer 16 to inform the staff. Of course, only the sensor detection data can be provided through the man-machine interface or the operating computer 16, and then the staff can manually compare and judge.

The above description shows and describes several preferred embodiments of the utility model, but as mentioned above, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as the exclusion of other embodiments, but can be used in various various other combinations, modifications and environments, and can be modified within the scope of the inventive concept described herein, using the above teachings or skill or knowledge in the relevant fields. However, modifications and changes made by those skilled in the art do not depart from the spirit and scope of the utility model, and should all fall within the protection scope of the appended claims of the utility model.

Claims (3)

1. a portable pressure protection device comprehensive calibration device, it is characterized in that: comprise air compressor (2), and this air compressor (2) is communicated with the inlet of air storage tank (3) by air pipeline (17), The outlet of the gas storage tank (3) is communicated with the inlet of the first solenoid valve (6) through the gas pipeline (17), the outlet of the first solenoid valve (6) is provided with an exhaust hole (7), and the gas storage The outlet of the tank (3) is also connected to the second solenoid valve (8), the throttle valve (9), the test port (10) of the pressure protection device and the test end of the pressure sensor (13) in turn through the gas pipeline (17), The signal output end of the pressure sensor (13) is connected to the control device (14), and the control end of the first solenoid valve (6) and the control end of the second solenoid valve (8) are also connected to the control device (14) respectively. ; wherein the pressure protection device test port (10) is provided with at least one test valve so as to be connected with the pressure relief valve (11) to be measured or the quick-action relay (12) of the pressure to be measured. 2. The portable pressure protection device comprehensive calibration device as claimed in claim 1, wherein the control device (14) adopts PLC or a single-chip microcomputer, and the control device (14) has a man-machine interface or the control device (14) The connection to the operating computer (16) is via Ethernet. 3. The portable pressure protection device comprehensive calibration device according to claim 1, characterized in that: a pressure gauge (4) is installed on the top of the air storage tank (3) and a drain hole (5) is installed on the bottom of the air storage tank (3). .

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