SF6 gas leakage on-line monitoring system verification device

Abstract

The utility model discloses an SF6 gas leakage on-line monitoring system verification device which comprises a verification box, a mounting assembly is arranged on the lower side wall of the verification box, and an SF6 sensor and an SF6 gas leakage on-line monitoring system body are arranged in the verification box through the mounting assembly. The surfaces of the wires of the SF6 sensor and the SF6 gas leakage on-line monitoring system main body are provided with sealing plugs in a lap joint mode, and the top of the verification box is provided with a box cover in a lap joint mode. Through the installation assembly, the gas inlet pipe, the flow meter, the connecting pipe, the adjusting pipe, the SF6 gas inlet pipe and the gas outlet pipe, the SF6 gas leakage on-line monitoring system body can be conveniently verified, the verification device needs to be adjusted again after adjustment is completed, the situation that gas needs to be evenly distributed in the verification box during verification each time, and the verification efficiency is improved is avoided. Therefore, the speed is higher when a plurality of SF6 gas leakage on-line monitoring system main bodies are calibrated, and the SF6 gas leakage on-line monitoring system calibration device is faster to use.

Description

Technical Field

[0001] The utility model relates to the technical field of SF6 gas leakage monitoring system verification, in particular to a SF6 gas leakage online monitoring system verification device. Background Art

[0002] Sulfur hexafluoride gas is used as an arc extinguishing medium and an insulating medium. Due to its arc extinguishing and insulating properties, it is often used in circuit breakers in the national power grid system, making the voltage and current parameters of a single break of this circuit breaker much higher than those of compressed air circuit breakers and low-oil circuit breakers, and does not require high gas pressure and a considerable number of series breaks. It is mainly used in voltage levels above 110kV. Sulfur hexafluoride is an asphyxiant. At high concentrations, it can cause breathing difficulties, wheezing, blue skin and mucous membranes, and whole-body spasms. After inhaling a mixture of 80% sulfur hexafluoride + 20% oxygen for a few minutes, the human body will experience numbness of the limbs or even suffocation and death. Therefore, it is necessary to monitor whether SF6 gas is leaking through a monitoring system. The SF6 gas leakage online monitoring system needs to be calibrated before use, and the accuracy of the SF6 gas leakage online monitoring system can be determined based on the calibration results.

[0003] In the prior art, patent number CN201921224227.9 proposes a SF6 gas leakage online monitoring system verification device, which can quickly and conveniently realize the verification of the SF6 gas leakage online monitoring system. However, the patent number CN201921224227.9 requires the use of a fan to evenly distribute the gas inside the box when the SF6 gas enters the verification box, and each time the SF6 gas leakage online monitoring system is verified, the SF6 gas needs to be evenly distributed inside the verification box through a fan, so that each time the SF6 gas leakage online monitoring system is verified, it takes time to wait for the SF6 gas to be evenly distributed inside the verification box. Therefore, a SF6 gas leakage online monitoring system verification device is proposed. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a SF6 gas leakage online monitoring system calibration device, which is used to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A calibration device for an SF6 gas leakage online monitoring system comprises a calibration box, a mounting assembly is provided on the lower side wall of the calibration box, an SF6 sensor and an SF6 gas leakage online monitoring system body are provided inside the calibration box through the mounting assembly, sealing plugs are overlapped on the wire surfaces of the SF6 sensor and the SF6 gas leakage online monitoring system body, a box cover is overlapped on the top of the calibration box, a sealing assembly is provided on the bottom of the box cover, an air inlet pipe is fixedly provided on the right side of the calibration box, a flow meter and a solenoid valve are fixedly provided on the air inlet pipe, a connecting pipe is installed on the air inlet pipe through a tee, a regulating pipe and an SF6 gas inlet pipe are installed on the connecting pipe through a tee, control valves are fixedly installed on the regulating pipe and the SF6 gas inlet pipe, and an air outlet pipe is fixedly provided on the left side of the calibration box.

[0007] Preferably, the mounting assembly includes a mounting frame and a support frame arranged on the lower side wall of the calibration box, a fixing column is fixedly arranged on the top of the mounting frame, the fixing column is overlapped with the SF6 sensor, a fixing nut is threadedly arranged on the surface of the fixing column, and an alignment column is fixedly arranged on the top of the support frame, the alignment column is overlapped with the main body of the SF6 gas leakage online monitoring system.

[0008] Preferably, the sealing assembly comprises a sealing plate arranged at the bottom of the box cover, a sealing gasket is fixedly arranged on the surface of the sealing plate, and the sealing gasket is overlapped with the inner wall of the inspection box.

[0009] Preferably, the sealing plug is composed of a semi-sealing plug one and a semi-sealing plug two, both of which are overlapped with the inspection box, and both of which are overlapped and made of elastic rubber.

[0010] Preferably, the handle on the top of the box cover has an anti-slip cover fixedly provided on the surface of the handle, and the anti-slip cover is made of anti-slip rubber material.

[0011] Preferably, the verification box is of a rectangular structure, is colorless and transparent, and has a partition plate fixedly disposed inside the verification box.

[0012] Preferably, the installation heights of the SF6 sensor and the main body of the SF6 gas leakage online monitoring system are the same, and the front and rear sides of the calibration box are penetrated with threading holes for the SF6 sensor and the main body of the SF6 gas leakage online monitoring system to pass through.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the SF6 gas leakage online monitoring system verification device, through the installation components, air inlet pipe, flow meter, connecting pipe, regulating pipe, SF6 gas inlet pipe and outlet pipe equipment, is convenient for verifying the SF6 gas leakage online monitoring system body, and the verification device needs to be adjusted again after the adjustment is completed, avoiding the need to wait until the gas is evenly distributed in the verification box every time the verification is performed, thereby making the verification of multiple SF6 gas leakage online monitoring system bodies faster, making the SF6 gas leakage online monitoring system verification device faster to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is the structural survey drawing of the utility model;

[0015] Figure 2 This is a left view of the structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the local structure of the utility model;

[0017] Figure 4 It is a schematic diagram of the longitudinal section of the structure of the utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the sealing plug of the utility model;

[0019] Figure 6 It is another partial structural schematic diagram of the utility model.

[0020] In the figure: 1. calibration box; 2. SF6 sensor; 3. main body of SF6 gas leakage online monitoring system; 4. mounting frame; 5. fixing column; 6. fixing nut; 7. supporting frame; 8. alignment column; 9. box cover; 10. sealing plate; 11. sealing gasket; 12. handle; 13. anti-slip cover; 14. air inlet pipe; 15. flow meter; 16. connecting pipe; 17. regulating pipe; 18. SF6 gas inlet pipe; 19. air outlet pipe; 20. sealing plug; 201. semi-sealing plug one; 202. semi-sealing plug two. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Reference Figure 1-6A SF6 gas leakage online monitoring system calibration device comprises a calibration box 1, a mounting assembly is arranged on the lower side wall of the calibration box 1, an SF6 sensor 2 and a SF6 gas leakage online monitoring system body 3 are arranged inside the calibration box 1 through the mounting assembly, the calibration box 1 is a rectangular structure, the calibration box 1 is colorless and transparent, a partition plate is fixedly arranged inside the calibration box 1, and the conditions of the SF6 sensor 2 and the SF6 gas leakage online monitoring system body 3 are conveniently observed through the wireless and transparent calibration box 1, the mounting assembly comprises a mounting frame 4 and a support frame 7 arranged on the lower side wall of the calibration box 1, a fixing column 5 is fixedly arranged on the top of the mounting frame 4, the fixing column 5 is overlapped with the SF6 sensor 2, a fixing nut 6 is arranged on the surface of the fixing column 5, and a fixing nut 6 is fixed on the top of the support frame 7 A positioning column 8 is fixedly provided, and the positioning column 8 is overlapped with the main body 3 of the SF6 gas leakage online monitoring system. The installation height of the SF6 sensor 2 and the main body 3 of the SF6 gas leakage online monitoring system are the same. The front and rear sides of the calibration box 1 are penetrated with threading holes for the wires of the SF6 sensor 2 and the main body 3 of the SF6 gas leakage online monitoring system to pass through. The SF6 sensor 2 and the main body 3 of the SF6 gas leakage online monitoring system are installed at the same height, the SF6 sensor 2 is placed on the mounting frame 4, and the fixing column 5 is inserted into the fixing hole of the SF6 sensor 2, and the fixing nut 6 is screwed into the surface of the fixing column 5, and then the main body 3 of the SF6 gas leakage online monitoring system is placed on the support frame 7, and the positioning hole is inserted into the SF6 gas leakage online monitoring The SF6 sensor 2 and the SF6 gas leakage online monitoring system body 3 are arranged in the fixing hole of the system body 3, and the detection ends of the SF6 sensor 2 and the SF6 gas leakage online monitoring system body 3 are located at the same height, so that the concentrations of SF6 gas detected by the SF6 sensor 2 and the SF6 gas leakage online monitoring system body 3 are the same. Through the setting of the threading hole, it is convenient to pass the wires of the SF6 sensor 2 and the SF6 gas leakage online monitoring system body 3 out of the calibration box 1. The wire surfaces of the SF6 sensor 2 and the SF6 gas leakage online monitoring system body 3 are overlapped with sealing plugs 20. The sealing plugs 20 are composed of a semi-sealing plug 1 201 and a semi-sealing plug 202. The semi-sealing plug 1 201 and the semi-sealing plug 202 are overlapped with the calibration box 1. The semi-sealing plug 1 201 and the semi-sealing plug 202 are overlapped with the calibration box 1. 2 is an overlapping arrangement, the semi-sealing plug 1 201 and the semi-sealing plug 2 202 are both made of elastic rubber, and the sealing plug 20 composed of the semi-sealing plug 1 201 and the semi-sealing plug 2 202 makes it more convenient to install the sealing plug 20 on the SF6 sensor 2 and the wire of the main body 3 of the SF6 gas leakage online monitoring system, and the sealing plug 20 composed of the semi-sealing plug 1 201 and the semi-sealing plug 202 is convenient to seal the threading hole of the verification box 1, thereby avoiding the leakage of SF6 gas from the threading hole. The top of the verification box 1 is overlapped with a box cover 9, and the bottom of the box cover 9 is provided with a sealing assembly. The right side of the verification box 1 is fixedly provided with an air intake pipe 14, and the air intake pipe 14 is fixedly installed with a flow meter 15 and a solenoid valve, and the air intake pipe 14 is installed with a connecting pipe 16 through a tee.The connecting pipe 16 is installed with a regulating pipe 17 and an SF6 gas inlet pipe 18 through a tee. The regulating pipe 17 and the SF6 gas inlet pipe 18 are both fixedly installed with control valves. An outlet pipe 19 is fixedly provided on the left side of the verification box 1. The SF6 gas leakage online monitoring system verification device is convenient for verifying the SF6 gas leakage online monitoring system main body 3 through the installation components, the inlet pipe 14, the flow meter 15, the connecting pipe 16, the regulating pipe 17, the SF6 gas inlet pipe 18 and the outlet pipe 19. The verification device needs to be adjusted again after the adjustment is completed, avoiding the need to wait until the gas is evenly distributed in the verification box 1 each time the verification is completed, thereby making the verification of multiple SF6 gas leakage online monitoring system main bodies 3 faster, making the SF6 gas leakage online monitoring system verification device faster to use.

[0023] Specifically, the sealing assembly includes a sealing plate 10 arranged at the bottom of the box cover 9, and a sealing gasket 11 is fixedly arranged on the surface of the sealing plate 10. The sealing gasket 11 is overlapped with the inner wall of the test box 1. Through the arrangement of the sealing plate 10 and the sealing gasket 11, it is convenient to seal the connection gap between the box cover 9 and the test box 1, thereby avoiding leakage of SF6 gas from the connection gap between the box cover 9 and the test box 1.

[0024] Specifically, the handle 12 on the top of the box cover 9 has an anti-slip cover 13 fixedly provided on the surface of the handle 12. The anti-slip cover 13 is made of anti-slip rubber material. The setting of the handle 12 can facilitate the user to open the box cover 9. The setting of the anti-slip cover 13 can prevent the user's hand from slipping against the handle 12.

[0025] The electrical components appearing in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0026] When in use: place the SF6 gas leakage online monitoring system body 3 that needs to be verified on the top of the support frame 7, and insert the alignment column 8 into the SF6 gas leakage online monitoring system body 3, so that the installation height of the SF6 gas leakage online monitoring system body 3 is consistent with that of the SF6 sensor 2, and introduce air through the regulating pipe 17. At this time, the control valve on the regulating pipe 17 is opened, and the control valve on the SF6 gas inlet pipe 18 is closed. Air enters the air inlet pipe 14 through the tee and the connecting pipe 16, and the flow rate is monitored by the flow meter 15 on the air inlet pipe 14, and the flow rate is adjusted by the solenoid valve so that the flow rates of the two flow meters 15 are the same, and the SF6 gas is transported through the SF6 gas inlet pipe 18. At this time, the control valve on the regulating pipe 17 is closed, and the control valve on the SF6 gas inlet pipe 18 is closed. The valve is opened, and SF6 gas enters the air inlet pipe 14 through the tee and the connecting pipe 16, and enters the verification box 1 through the air inlet pipe 14. Since the air intake of the two air inlet pipes 14 is the same, the amount of gas entering the two sides of the partition plate is the same. Since the installation heights of the SF6 sensor 2 and the SF6 gas leakage online monitoring system body 3 are the same, the SF6 sensor 2 and the SF6 gas leakage online monitoring system body 3 can detect SF6 gas at the same time, and the SF6 concentrations in the two cavities in the verification box 1 are the same. The readings of the SF6 sensor 2 and the SF6 gas leakage online monitoring system body 3 can be used to determine whether the SF6 gas leakage online monitoring system body 3 is accurate. The SF6 gas used for verification is discharged through the outlet pipe 19, and the outlet pipe 19 is connected to an external collection device through a pipeline.

[0027] To sum up, the SF6 gas leakage online monitoring system verification device, through the installation components, air inlet pipe 14, flow meter 15, connecting pipe 16, regulating pipe 17, SF6 gas inlet pipe 18 and outlet pipe 19, is convenient for verifying the SF6 gas leakage online monitoring system main body 3, and the verification device needs to be adjusted again after the adjustment is completed, avoiding the need to wait until the gas is evenly distributed in the verification box 1 every time the verification is completed, thereby making the verification of multiple SF6 gas leakage online monitoring system main bodies 3 faster, making the SF6 gas leakage online monitoring system verification device faster to use, and is used to solve the problems raised in the above-mentioned background technology.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0029] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A SF6 gas leakage online monitoring system calibration device, comprising a calibration box (1), characterized in that: The lower side wall of the verification box (1) is provided with a mounting assembly. An SF6 sensor (2) and a main body (3) of an SF6 gas leakage online monitoring system are arranged inside the verification box (1) through the mounting assembly. The surfaces of the wires of the SF6 sensor (2) and the main body (3) of the SF6 gas leakage online monitoring system are overlapped with sealing plugs (20). A box cover (9) is overlapped on the top of the verification box (1). A sealing assembly is arranged at the bottom of the box cover (9). An air inlet pipe (14) is fixedly arranged on the right side of the verification box (1). A flow meter (15) and a solenoid valve are fixedly installed on the air inlet pipe (14). A connecting pipe (16) is installed on the air inlet pipe (14) through a tee. A regulating pipe (17) and an SF6 gas inlet pipe (18) are installed on the connecting pipe (16) through a tee. Control valves are fixedly installed on the regulating pipe (17) and the SF6 gas inlet pipe (18). An air outlet pipe (19) is fixedly arranged on the left side of the verification box (1).

2. The SF6 gas leakage online monitoring system verification device according to claim 1 is characterized in that: The installation assembly comprises a mounting frame (4) and a support frame (7) arranged on the lower side wall of the calibration box (1); a fixing column (5) is fixedly arranged on the top of the mounting frame (4); the fixing column (5) is overlapped with the SF6 sensor (2); a fixing nut (6) is threadedly arranged on the surface of the fixing column (5); an alignment column (8) is fixedly arranged on the top of the support frame (7); the alignment column (8) is overlapped with the main body (3) of the SF6 gas leakage online monitoring system.

3. The SF6 gas leakage online monitoring system verification device according to claim 1 is characterized in that: The sealing assembly comprises a sealing plate (10) arranged at the bottom of the box cover (9), a sealing gasket (11) is fixedly arranged on the surface of the sealing plate (10), and the sealing gasket (11) is overlapped with the inner wall of the inspection box (1).

4. The SF6 gas leakage online monitoring system verification device according to claim 1 is characterized in that: The sealing plug (20) is composed of a semi-sealing plug 1 (201) and a semi-sealing plug 2 (202). The semi-sealing plug 1 (201) and the semi-sealing plug 2 (202) are both overlapped with the inspection box (1). The semi-sealing plug 1 (201) and the semi-sealing plug 2 (202) are overlapped. The semi-sealing plug 1 (201) and the semi-sealing plug 2 (202) are both made of elastic rubber.

5. The SF6 gas leakage online monitoring system verification device according to claim 1 is characterized in that: The handle (12) on the top of the box cover (9) has an anti-slip cover (13) fixedly arranged on the surface of the handle (12), and the anti-slip cover (13) is made of anti-slip rubber material.

6. The SF6 gas leakage online monitoring system verification device according to claim 1 is characterized in that: The verification box (1) is of rectangular structure, is colorless and transparent, and has a partition plate fixedly arranged inside the verification box (1).

7. The SF6 gas leakage online monitoring system verification device according to claim 1 is characterized in that: The installation heights of the SF6 sensor (2) and the main body (3) of the SF6 gas leakage online monitoring system are the same, and the front and rear sides of the calibration box (1) are penetrated with threading holes for the wires of the SF6 sensor (2) and the main body (3) of the SF6 gas leakage online monitoring system to pass through.

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