SF6 mixed gas density relay calibrator

Abstract

The utility model discloses an SF6 mixed gas density relay calibrator, which comprises a calibrator main body, an exhaust pipe and a gas inlet screw sleeve, the exhaust pipe and the gas inlet screw sleeve are arranged on the front surface of the calibrator main body, the other end of the exhaust pipe is fixedly connected with a treatment box, a purification tank is arranged in the treatment box, and a purification assembly is movably arranged in the purification tank. According to the utility model, the processing box is arranged on the exhaust pipe, so that the emission path of the SF6 gas discharged by the calibration instrument main body can be switched, the SF6 gas can be directly discharged into the environment and purified by the purification assembly or discharged into a recovery system for recycling according to needs, and the SF6 gas is purified by the purification assembly and then discharged, so that the pollution to the environment can be reduced; and meanwhile, the connection between the gas cylinder and the calibrator main body is realized through the threaded structure, and the threaded structure can be prevented from loosening through the limiting seat, so that the sealing performance is improved, gas leakage or equipment damage caused by connection loosening in the operation process can be avoided, and the operation safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of relay calibrators, and more specifically, to an SF6 mixed gas density relay calibrator. Background Art

[0002] The SF6 gas density relay is an important component used to monitor the change in the density of SF6 gas in the SF6 switch body during operation. The quality of its performance directly affects the operation safety of the SF6 switch. The instrument used to calibrate the SF6 gas density relay is called an SF6 gas density relay calibrator.

[0003] The patent with the application number CN2022234207700 discloses an SF6 gas density relay calibrator, which includes a calibrator main body and a common joint. On the upper side of the front end of the calibrator main body, an air inlet pipe, an air discharge pipe, and a measurement air pipe are sequentially arranged from left to right. A gas cylinder is arranged at the left end of the air inlet pipe. The common joint is arranged at the upper end of the measurement air pipe, and a transition joint is arranged at the upper end of the common joint. When in use, this SF6 gas density relay calibrator is convenient for quickly calibrating the pressure gauges at different temperatures and normal temperatures, facilitating the display of the pressure at the measured ambient temperature, the pressure at the ambient temperature of 20°C, and the ambient temperature, which is beneficial to improving the automation degree of the equipment. This device is convenient for completing the dynamic automatic compensation between pressure and temperature, avoiding the cumbersome manual gas path adjustment operation, facilitating the on-site calibration of the density relays of most types of switches. This device can protect the equipment, which is beneficial to improving the wear-resistant placement performance of the equipment and avoiding equipment sliding during use.

[0004] When this calibrator operates, it needs to connect the air inlet pipe and the exhaust pipe. The air inlet pipe of this structure is mostly connected by threads, and it is easy to loosen after connection. If it causes leakage, it will affect the safety performance and calibration effect. At the same time, when this calibrator is in use, there is a situation of carrying and using it, resulting in the exhaust pipe needing to be directly discharged into the environment, causing harm to the environment. Summary of the Utility Model

[0005] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide an SF6 mixed gas density relay calibrator, which can be directly discharged into the environment as needed and purified by a purification component, and can avoid gas leakage or equipment damage caused by loose connection during operation, improving the safety of operation.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions;

[0007] SF6 mixed gas density relay calibrator, including a calibrator main body, an exhaust pipe and an intake screw sleeve installed on the front. The other end of the exhaust pipe is fixedly connected to a treatment box. A purification tank is provided inside the treatment box. A purification component is movably installed inside the purification tank. Two electric control valves I are installed on the inner wall of the purification tank. The electric control valves I all penetrate and extend into the interior of the treatment box. An electric control valve II is fixedly installed on the inner wall of the treatment box. The electric control valve II is located at the bottom of the purification tank. The outer thread of the intake screw sleeve is threadedly connected to a trachea connector. A connecting trachea is installed on the trachea connector. The other end of the connecting trachea is installed with a gas cylinder. A limit seat is slidably connected to the front of the calibrator main body. Uniformly distributed springs are fixedly connected to the limit seat. The other ends of the springs are fixedly connected to the calibrator main body. The intake screw sleeve is located inside the limit seat.

[0008] As a further description of the above technical solution: A sealing cover plate is detachably connected to the inner wall of the purification tank. The purification component is located at the bottom of the sealing cover plate.

[0009] As a further description of the above technical solution: The purification component includes a fiberglass filter plate and an activated carbon adsorption plate. The fiberglass filter plate and the activated carbon adsorption plate are both located inside the purification tank and are assembled as a whole.

[0010] As a further description of the above technical solution: A cut edge is provided on the side of the trachea connector. A rubber strip is fixedly connected to the inner wall of the limit seat. The rubber strip contacts the outer side of the trachea connector.

[0011] As a further description of the above technical solution: A sliding strip is fixedly connected to the limit seat. The sliding strip is slidably connected to the calibrator main body.

[0012] As a further description of the above technical solution: A finger plate is fixedly connected to the limit seat. Uniformly distributed anti-slip lines are provided on the finger plate.

[0013] Compared with the prior art, the advantages of the present utility model are as follows:

[0014] In the present utility model, by providing a treatment box on the exhaust pipe, the discharge path of the SF6 gas discharged from the calibrator main body can be switched. According to needs, it can be directly discharged into the environment and purified by the purification component, or discharged into the recovery system for recycling. After the SF6 gas is purified by the purification component and then discharged, environmental pollution can be reduced. At the same time, the connection between the gas cylinder and the calibrator main body is realized through a threaded structure, and the limit seat can prevent the threaded structure from loosening, improving the sealing performance and avoiding gas leakage or equipment damage caused by connection loosening during operation, thereby improving the safety of operation. Description of the Drawings

[0015] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0016] Figure 2 is a front structural schematic diagram of the present utility model;

[0017] Figure 3 is a sectional structural schematic diagram of the processing box of the present utility model;

[0018] Figure 4 is a sectional structural schematic diagram of the intake screw sleeve of the present utility model.

[0019] Explanation of the reference numerals in the figure:

[0020] 1. Calibrator main body; 2. Exhaust pipe; 3. Intake screw sleeve; 4. Processing box; 5. Purification tank; 6. Purification component; 601. Fiberglass filter plate; 602. Activated carbon adsorption plate; 7. Electric control valve I; 8. Electric control valve II; 9. Pipe connector; 10. Connecting air pipe; 11. Gas cylinder; 12. Limit seat; 13. Spring; 14. Sealing cover plate; 15. Rubber strip; 16. Slide bar; 17. Finger plate. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0022] Please refer to Figures 1 to 4 , in the present utility model, an SF6 mixed gas density relay calibrator includes a calibrator main body 1, an exhaust pipe 2 and an intake screw sleeve 3 installed on the front. The other end of the exhaust pipe 2 is fixedly connected to a processing box 4. A purification tank 5 is provided inside the processing box 4. A purification component 6 is movably installed inside the purification tank 5. Two electric control valves I 7 are installed on the inner wall of the purification tank 5. The electric control valves I 7 all penetrate and extend into the inside of the processing box 4. An electric control valve II 8 is fixedly installed on the inner wall of the processing box 4. The electric control valve II 8 is located at the bottom of the purification tank 5. The outer thread of the intake screw sleeve 3 is threadedly connected to a pipe connector 9. A connecting air pipe 10 is installed on the pipe connector 9. The other end of the connecting air pipe 10 is installed with a gas cylinder 11. A limit seat 12 is slidably connected to the front of the calibrator main body 1. A uniformly distributed spring 13 is fixedly connected to the limit seat 12. The other end of the spring 13 is fixedly connected to the calibrator main body 1. The intake screw sleeve 3 is located inside the limit seat 12.

[0023] A sealing cover plate 14 is detachably connected to the inner wall of the purification tank 5, and the purification component 6 is located at the bottom of the sealing cover plate 14; the purification component 6 includes a glass fiber filter plate 601 and an activated carbon adsorption plate 602, and both the glass fiber filter plate 601 and the activated carbon adsorption plate 602 are located inside the purification tank 5 and are assembled together; a cutting edge is provided on the side of the air pipe connector 9, and a rubber strip 15 is fixedly connected to the inner wall of the limit seat 12, and the rubber strip 15 contacts the outer side of the air pipe connector 9.

[0024] Before the relay needs to be calibrated, the user needs to connect the gas cylinder 11 to the calibrator main body 1. The user presses the limit seat 12 with one hand, so that the limit seat 12 presses the spring 13 and enters the calibrator main body 1, making the intake bushing 3 completely exposed. Then the user holds the air pipe connector 9 on the connecting air pipe 10 and moves it to the side of the intake bushing 3 and starts to rotate it on the intake bushing 3, so that the air pipe connector 9 is threadedly connected to the intake bushing 3. After the connection is completed, the user releases the limit seat 12. At this time, the limit seat 12 rebounds under the action of the spring 13. Due to the multi-group cutting edge settings on the side of the air pipe connector 9, the rubber strip 15 deforms and increases the contact surface with the air pipe connector 9, thus completing the limit of the air pipe connector 9 to prevent it from loosening. When disassembling, continue to press the limit seat 12 and then reverse-rotate the air pipe connector 9. At the same time, the inside of the processing box 4 needs to be debugged. The user judges according to the site whether the SF6 gas discharged from the exhaust pipe 2 can be sent into the recovery system or directly discharged. If it is directly discharged, control the second electric control valve 8 to close and the first electric control valve 7 to open. Otherwise, control the second electric control valve 8 to open. The directly discharged SF6 gas will pass through the purification tank 5 and penetrate the purification component 6 and then be discharged from the processing box 4. The glass fiber filter plate 601 captures and removes solid particles and impurities in the SF6 gas, and the activated carbon adsorption plate 602 adsorbs harmful components in the SF6 gas. Activated carbon has a large surface area and can effectively adsorb gas molecules.

[0025] In the present utility model, by providing a processing box 4 on the exhaust pipe 2, the discharge path of the SF6 gas discharged from the calibrator main body 1 can be switched. According to needs, it can be directly discharged into the environment and purified by the purification component 6, or discharged into the recovery system for recycling. After the SF6 gas is purified by the purification component 6 and then discharged, environmental pollution can be reduced. At the same time, the connection between the gas cylinder 11 and the calibrator main body 1 is realized through a threaded structure, and the limit seat 12 can prevent the threaded structure from loosening, improving the sealing performance and avoiding gas leakage or equipment damage caused by connection loosening during operation, thus improving the safety of operation.

[0026] Please refer to Figure 4 , wherein: a slide bar 16 is fixedly connected to the limit seat 12, and the slide bar 16 is slidably connected to the calibrator main body 1.

[0027] In the present invention, when the limit seat 12 moves, the slide bar 16 will also move synchronously. The setting of the slide bar 16 can limit the limit seat 12, so that the limit seat 12 can maintain horizontal sliding and prevent the limit seat 12 from detaching.

[0028] See also Figure 4 , wherein: a finger plate 17 is fixedly connected to the limit seat 12, and the finger plate 17 is provided with evenly distributed anti-slip grooves.

[0029] In the present invention, when the user needs to press down the limit seat 12, the finger plate 17 can provide a good fulcrum for the user, and the anti-slip pattern can prevent the user from slipping.

[0030] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. An SF6 mixed gas density relay calibrator, comprising a calibrator body (1), an exhaust pipe (2) and an air inlet screw sleeve (3) installed on the front, characterized in that: The other end of the exhaust pipe (2) is fixedly connected to a treatment box (4), a purification tank (5) is provided inside the treatment box (4), a purification assembly (6) is movably installed inside the purification tank (5), two electric control valves (7) are installed on the inner wall of the purification tank (5), the electric control valves (7) both penetrate and extend into the treatment box (4), an electric control valve (8) is fixedly installed on the inner wall of the treatment box (4), the electric control valve (8) is located at the bottom of the purification tank (5), and the air intake The outer thread of the screw sleeve (3) is connected to a trachea connector (9), a connecting trachea (10) is installed on the trachea connector (9), a gas cylinder (11) is installed on the other end of the connecting trachea (10), the front of the calibration instrument body (1) is slidably connected to a limit seat (12), a uniformly distributed spring (13) is fixedly connected to the limit seat (12), the other end of the spring (13) is fixedly connected to the calibrator body (1), and the air intake screw sleeve (3) is located inside the limit seat (12).

2. The SF6 mixed gas density relay tester according to claim 1 is characterized in that: A sealing cover plate (14) is detachably connected to the inner wall of the purification tank (5), and the purification component (6) is located at the bottom of the sealing cover plate (14).

3. The SF6 mixed gas density relay tester according to claim 1 is characterized in that: The purification component (6) comprises a glass fiber filter plate (601) and an activated carbon adsorption plate (602), and the glass fiber filter plate (601) and the activated carbon adsorption plate (602) are both located inside the purification tank (5) and assembled as one.

4. The SF6 mixed gas density relay tester according to claim 1, characterized in that: A cutting edge is provided on the side of the trachea connector (9), and a rubber strip (15) is fixedly connected to the inner wall of the limiting seat (12), and the rubber strip (15) is in contact with the outer side of the trachea connector (9).

5. The SF6 mixed gas density relay tester according to claim 1 is characterized in that: A slide bar (16) is fixedly connected to the limit seat (12), and the slide bar (16) is slidably connected to the calibration instrument body (1).

6. The SF6 mixed gas density relay tester according to claim 1, characterized in that: The limit seat (12) is fixedly connected with a finger plate (17), and the finger plate (17) is provided with evenly distributed anti-slip grooves.

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