High-pressure gas relay

Abstract

The utility model discloses a high-pressure gas relay, which relates to the technical field of power equipment, and comprises a relay shell and a fixed seat connected to the bottom of the relay shell, an end cover is connected inside the fixed seat, a first sealing ring is connected outside the end cover, a groove is formed inside the end cover, and a second sealing ring is arranged inside the groove. According to the high-pressure gas relay mechanical switch, the permanent magnet is matched with the reed pipe to realize on-off of a circuit, no mechanical contact and friction exist between the reeds, and the problems that in the frequent opening and closing process of a high-pressure gas relay mechanical switch, a contact is abraded and oxidized due to friction, electric arcs and the like are solved; the service life of the high-pressure gas relay is prolonged; according to the high-pressure gas relay, the redundancy design is adopted, and the two high-temperature wires are connected in parallel, so that the problem that the high-pressure gas relay cannot work normally due to a single-line fault in use of the high-pressure gas relay is solved, and the working stability of the high-pressure gas relay is improved.

Description

Technical Field

[0001] This utility model relates to the field of power equipment technology, specifically a high-voltage gas relay. Background Technology

[0002] In fields such as power, high-pressure gas is often used as an insulating and arc-extinguishing medium. Excessive density and moisture content can seriously affect the safe operation of equipment. For example, a decrease in gas density can lead to the loss of insulation and arc-extinguishing performance, while excessive moisture can cause corrosion and other problems. Therefore, gas status monitoring is necessary, and high-pressure gas relays have become a key component.

[0003] Currently, during frequent opening and closing of high-voltage gas relay mechanical switches, the contacts may experience wear and oxidation due to friction, electric arc, and other reasons, which will lead to a shorter service life of the high-voltage gas relay.

[0004] Moreover, in complex and harsh environments, the circuits of high-voltage gas relays may be affected by a variety of factors such as electromagnetic interference, mechanical vibration, and temperature changes. A single circuit fault can cause the high-voltage gas relay to malfunction, resulting in poor stability during operation. Utility Model Content

[0005] To address the above problems, this utility model provides a high-pressure gas relay, which solves the aforementioned issues.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-pressure gas relay, comprising a relay housing and a fixing base connected to the bottom of the relay housing, wherein an end cover is connected inside the fixing base, a first sealing ring is connected to the outside of the end cover, a groove is provided inside the end cover, a second sealing ring is provided in the groove, and sealing rings are respectively connected to both ends of the second sealing ring;

[0007] A circular groove is provided on one side of the fixing base, and a spring is provided in the circular groove;

[0008] The end cap is internally connected to a pneumatic push rod, the top of which is connected to a pad, and a permanent magnet is connected to one side of the pad. The permanent magnet is installed on the outside of the pneumatic push rod, and the pad is located inside the circular groove.

[0009] Preferably, the permanent magnet is located in the groove of the end cap, the permanent magnet is disposed on the top of the sealing ring, and the permanent magnet is slidably connected to the circular groove during operation.

[0010] Preferably, one side of the pad abuts against the spring.

[0011] Preferably, a mounting base is connected to the top of the relay housing, and an electrical connector is connected to one side of the mounting base.

[0012] Preferably, a circuit board is connected inside the relay housing, and a reed switch is connected to one side of the circuit board.

[0013] Preferably, one side of the circuit board is connected to two sets of high-temperature wires, and one end of the two sets of high-temperature wires is connected to one side of the electrical connector.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This application uses a permanent magnet to cooperate with a reed switch, so that the reed switch controls the opening and closing of the internal reed by the magnetic field generated by the permanent magnet, thereby realizing the circuit switching. There is no mechanical contact or friction between the reeds, which solves the problem that the contacts of the high-voltage gas relay mechanical switch will wear and oxidize due to friction, electric arc and other reasons during frequent opening and closing, which is conducive to improving the service life of the high-voltage gas relay.

[0016] 2. This application adopts a redundant design by connecting two high-temperature wires in parallel, so that when one line fails, the other line can continue to work normally and maintain the relay signal output function. This solves the problem that a single line failure in the high-pressure gas relay will cause the high-pressure gas relay to fail to work properly, which is conducive to improving the stability of the high-pressure gas relay. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the overall exploded structure of this utility model;

[0019] Figure 3 This is a schematic cross-sectional view of the overall structure of this utility model.

[0020] The following are the labels in the diagram: 1. Electrical connector; 2. Mounting base; 3. Relay housing; 4. Circuit board; 5. Spring; 6. Pad; 7. Permanent magnet; 8. Sealing ring; 9. Second sealing ring; 10. First sealing ring; 11. End cap; 12. Pneumatic push rod; 13. Reed switch; 14. High-temperature wire; 15. Fixing base; 16. Circular groove. Detailed Implementation

[0021] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0022] Please see Figures 1 to 3A high-pressure gas relay includes a relay housing 3 and a fixing base 15 connected to the bottom of the relay housing 3. An end cap 11 is connected inside the fixing base 15, and a first sealing ring 10 is connected to the outside of the end cap 11. A groove is formed inside the end cap 11, and a second sealing ring 9 is provided in the groove. Sealing rings 8 are respectively connected to both ends of the second sealing ring 9. The end cap 11, together with the sealing ring 8, the first sealing ring 10, and the second sealing ring 9, is used to seal the bottom of the relay housing 3. The sealing ring 8, the first sealing ring 10, and the second sealing ring 9 are all made of PTFE (polytetrafluoroethylene) material to prevent gas leakage, ensure airtightness, and adapt to high temperature and high pressure environments.

[0023] It should be further explained that the end cap 11 also limits the pneumatic push rod 12 to prevent the pneumatic push rod 12 from falling out of the top cap 11. Specifically, when the permanent magnet 7 outside the pneumatic push rod 12 is at the bottom, it will be in the groove of the end cap 11 and on one side of the sealing ring 8. Therefore, after the end cap 11 is installed, the pneumatic push rod 12 is also installed and will not fall out of the end cap 11.

[0024] A circular groove 16 is provided on one side of the fixed base 15, and a spring 5 is provided in the circular groove 16;

[0025] The end cap 11 is internally connected to a pneumatic push rod 12, the top of which is connected to a pad 6, and a permanent magnet 7 is connected to one side of the pad 6. The permanent magnet 7 is a material or device that can maintain strong magnetism for a long time after the external magnetic field is removed. Its core characteristic is that it spontaneously generates a constant magnetic field. It is generated by the spin and orbital motion of electrons inside atoms or molecules, which generates spontaneous magnetization, forming an ordered "magnetic domain" structure inside the material, and exhibiting a stable magnetic field to the outside. It should be noted that the permanent magnet 7 is a known technology, and those skilled in the art can and should understand its specific function and structure, so it will not be described in detail here. The permanent magnet 7 is installed on the outside of the pneumatic push rod 12, and the pad 6 is set inside the circular groove 16.

[0026] The permanent magnet 7 is located in the groove of the end cap 11 and is set on the top of the sealing ring 8. The permanent magnet 7 is slidably connected to the circular groove 16 during operation.

[0027] One side of the pad 6 abuts against the spring 5; when the high-pressure gas relay is working, the high-pressure gas will push the pneumatic push rod 12, causing the pneumatic push rod 12 to move upward in the end cover 11. At this time, the pneumatic push rod 12 will drive the pad 6 to move and squeeze the spring 5.

[0028] It should be added that when the pneumatic push rod 12 moves the pad 6, it will also move the permanent magnet 7.

[0029] When the displacement of the pad 6 causes the spring 5 to compress, the reverse force and the high-pressure gas thrust on the pneumatic push rod 12 reach a balance value, the pneumatic push rod 12 stops moving, and the permanent magnet 7 linked with it also suspends in a specific position.

[0030] It is important to note that the suspended permanent magnet 7 will affect the reed switch 13. After being subjected to a certain intensity of magnetic force, the reed switch 13 will close and form a switching output, thereby sending a control signal.

[0031] The top of the relay housing 3 is connected to the mounting base 2, and one side of the mounting base 2 is connected to the electrical connector 1. The electrical connector 1 is used to connect to the external control system circuit and transmit electrical signals.

[0032] The relay housing 3 is internally connected to a circuit board 4. A reed switch 13 is connected to one side of the circuit board 4. The reed switch 13 is a passive electronic switch element based on magnetic field control. It consists of two magnetic reeds sealed in a glass tube. The reeds are usually made of iron-nickel alloy and plated with precious metals to improve conductivity and corrosion resistance. Its core function is to control the opening and closing of the reeds by the presence or absence or strength of the external magnetic field, thereby realizing the circuit switching. Therefore, the reed switch 13 can convert the magnetic field signal of the permanent magnet 7 into an electrical signal and transmit it to the high-temperature wire 14 through the circuit board 4. At this time, the high-temperature wire 14 will also transmit the electrical signal to the external control system circuit through the electrical connector 1.

[0033] It should be noted that the reed switch 13 is a well-known technology, and those skilled in the art can and should understand its specific functions and structure, so it will not be described in detail here.

[0034] Two sets of high-temperature wires 14 are connected to one side of the circuit board 4, and one end of the two sets of high-temperature wires 14 is connected to one side of the electrical connector 1.

[0035] When using this utility model:

[0036] First, the end cap 11, together with the sealing ring 8, the first sealing ring 10 and the second sealing ring 9, is used to seal the bottom of the relay housing 3. The end cap 11 also limits the pneumatic push rod 12 to prevent the pneumatic push rod 12 from falling out of the top cap 11.

[0037] Secondly, when the high-pressure gas relay is working, the high-pressure gas will push the pneumatic push rod 12, causing the pneumatic push rod 12 to move upward in the end cover 11. At this time, the pneumatic push rod 12 will drive the pad 6 to move and squeeze the spring 5. When the pneumatic push rod 12 drives the pad 6 to move, it will also drive the permanent magnet 7 to move.

[0038] Then, when the displacement of the pad 6 causes the spring 5 to compress and the high-pressure gas thrust on the pneumatic push rod 12 reaches a balance value, the pneumatic push rod 12 stops moving, and the permanent magnet 7 linked with it also suspends at a specific position. At this time, the suspended permanent magnet 7 will affect the reed switch 13. After being affected by a certain intensity of magnetic force, the corresponding reed switch 13 completes the action of closing, forming a switch output, thereby sending a control signal.

[0039] Finally, the reed switch 13 can convert the magnetic field signal of the permanent magnet 7 into an electrical signal and transmit it to the high-temperature wire 14 through the circuit board 4. At this time, the high-temperature wire 14 will also transmit the electrical signal to the external control system circuit through the electrical connector 1.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-pressure gas relay, comprising a relay housing (3) and a mounting base (15) connected to the bottom of the relay housing (3), wherein an end cap (11) is internally connected to the mounting base (15), characterized in that: The end cap (11) is externally connected to a first sealing ring (10), and the end cap (11) is internally provided with a groove, the groove being provided with a second sealing ring (9), and the two ends of the second sealing ring (9) are respectively connected to sealing rings (8). A circular groove (16) is provided on one side of the fixed base (15), and a spring (5) is provided in the circular groove (16); The end cap (11) is connected to a pneumatic push rod (12) inside. A pad (6) is connected to the top of the pneumatic push rod (12). A permanent magnet (7) is connected to one side of the pad (6). The permanent magnet (7) is installed on the outside of the pneumatic push rod (12). The pad (6) is located inside the circular groove (16).

2. A high-voltage gas relay according to claim 1, characterized in that: The permanent magnet (7) is located in the groove of the end cap (11), and the permanent magnet (7) is disposed on the top of the sealing ring (8). The permanent magnet (7) is slidably connected to the circular groove (16) during operation.

3. A high-voltage gas relay according to claim 1, characterized in that: One side of the pad (6) abuts against the spring (5).

4. A high-voltage gas relay according to claim 1, characterized in that: The top of the relay housing (3) is connected to a mounting base (2), and one side of the mounting base (2) is connected to an electrical connector (1).

5. A high-voltage gas relay according to claim 4, characterized in that: The relay housing (3) is internally connected to a circuit board (4), and a reed switch (13) is connected to one side of the circuit board (4).

6. A high-voltage gas relay according to claim 5, characterized in that: Two sets of high-temperature wires (14) are connected to one side of the circuit board (4), and one end of the two sets of high-temperature wires (14) is connected to one side of the electrical connector (1).

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