Vacuum relay

Abstract

The application discloses a vacuum relay, which comprises a shell, a rectangular opening is formed in the top of the shell, an insulating piece is inserted into the opening, the insulating piece is in T shape, a hole is formed in the insulating piece, a vertical second electrode is inserted into the hole, the second electrode is in T shape, a horizontal fixing piece is fixedly connected to the inner side wall of the shell, a vertical electromagnetic driver is inserted into the fixing piece, a spring sheet is fixedly connected to one side of the fixing piece, a street iron is fixedly connected to the bottom inner side wall of the shell, a first electrode is inserted into the street iron, the first electrode is in T shape, the first electrode and the second electrode are parallel to each other, and the spring sheet is located between the first electrode and the street iron. The device can prevent the oxidation of the electrode material surface and prevent foreign matters from falling into, thereby bringing convenience for users, and the whole device is simple in structure and low in manufacturing cost.

Description

Technical Field

[0001] This invention belongs to the technical field of aircraft engine ignition devices, and particularly relates to vacuum relays. Background Technology

[0002] A relay is an electrical control device, while an igniter is a device that can provide enough energy in an instant to ignite fuel and stabilize the flame.

[0003] Existing ignition systems use electromagnetically driven, open-type contact switches. In this open environment, the electrode surfaces become hot and gradually oxidize due to the high frequency of opening and closing of the contacts by the electric arc. This leads to the appearance of oxidative impurities on the electrode material surface, reducing the contact performance between the contacts and preventing them from forming a proper closed state. Furthermore, the open contact environment allows dust and debris from the surrounding environment to easily affect the opening and closing performance of the contacts. Under the high temperature of the current or electric arc, if debris such as hair falls around the electrodes, it will gradually carbonize and attract the electrodes together, preventing the original electromagnetic force from disconnecting the contacts. Therefore, we need vacuum relays that prevent oxidation and foreign object ingress. Summary of the Invention

[0004] The purpose of this invention is to provide a vacuum relay to solve the problems of preventing oxidation of electrode material surfaces and preventing foreign objects from falling in.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A vacuum relay includes a housing. A rectangular opening is formed at the top of the housing, and an insulating component, T-shaped, is inserted inside the opening. A hole is formed inside the insulating component, and a vertical second electrode, also T-shaped, is inserted inside the hole. A horizontal fixing component is fixedly connected to the inner wall of the housing, and a vertical electromagnetic actuator is inserted inside the fixing component. A spring is fixedly connected to one side of the fixing component. A grounding block is fixedly connected to the inner wall of the bottom of the housing, and a first electrode, T-shaped, is inserted inside the grounding block. The first and second electrodes are parallel to each other. A spring is located between the first electrode and the grounding block. Two coil mounting components are inserted on either side of the grounding block on the inner wall of the bottom of the housing. Vertical magnetic drive coil mounting holes are formed inside the coil mounting components. A placement platform is fixedly connected inside the housing and is fixedly connected to the spring. A vertical vacuum extraction pipe is inserted into the top of the housing, and a fixing mechanism for fixing the vacuum extraction pipe is fixedly connected to the top of the housing.

[0006] As a further description of the above technical solution: by setting up a shell, the inside of the device can be sealed and protected, preventing debris such as hair from falling around the electrodes, causing them to carbonize and adhere to the electrodes. Furthermore, by setting up a vacuum extraction pipe, the gas inside the shell can be easily extracted, creating a vacuum inside the device and preventing oxidation of the electrode material surface.

[0007] Preferably, the fixing mechanism includes a compartment inserted into the top of the housing, with threaded sleeves fixedly connected to both sides of the compartment, and threaded rods threadedly connected to the inside of each of the two threaded sleeves, with handles fixedly connected to the ends of the two threaded rods away from the threaded sleeves.

[0008] Preferably, a vertical push block is rotatably connected to one end of the two threaded rods that are close to each other, and a plurality of clamping blocks are fixedly connected to one side of the two push blocks that are close to each other, the clamping blocks being arc-shaped.

[0009] Preferably, two sliders are fixedly connected to the upper and lower sides of the clamping block, and two transverse crossbars are fixedly connected to the inner sidewall of the chamber. The crossbars have grooves inside, and the sliders slide in the grooves.

[0010] As a further description of the above technical solution: by setting a threaded rod, the threaded rod can rotate inside the threaded sleeve when it is rotated, so that the threaded rod can push the clamping block to move inward, so that the clamping block can clamp and fix the vacuum pumping pipe, preventing the vacuum pumping pipe from shaking.

[0011] Preferably, the insulating component is made of ceramic, and the vacuum extraction tube is made of copper.

[0012] As a further description of the above technical solution: by making the insulating parts ceramic, current leakage can be prevented, which would affect the use of the device; and by making the vacuum pumping pipe copper, it can be clamped after vacuuming.

[0013] Preferably, the inner wall of the clamping block is arc-shaped, and the arc of the inner wall of the clamping block is equal to the arc of the outer wall of the vacuum pumping pipe, and the inner wall of the clamping block and the outer wall of the vacuum pumping pipe are in close contact.

[0014] As a further description of the above technical solution: by setting the inner wall of the clamping block into an arc shape, the vacuum pumping tube can be clamped to prevent the vacuum pumping tube from shaking.

[0015] Preferably, the fixing member has an opening inside that matches the size of the electromagnetic actuator, and the electromagnetic actuator is inserted into the opening.

[0016] As a further description of the above technical solution: by providing an opening inside the fixture that matches the size of the electromagnetic actuator, the electromagnetic actuator can be fixed to the fixture.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In this invention, the interior of the device can be sealed by using a housing, and the gas inside the housing is vented by using a vacuum pump connected to a vacuum pipe. This provides reliable protection for the electrodes, preventing the electrode material from developing oxidation impurities on the surface after the electrode surface reaches high temperature, which would reduce the contact performance between the contacts and prevent a good closure. It also prevents debris such as hair from falling around the electrodes, which would gradually carbonize at the temperature and attract the electrodes together, so that the original electromagnetic force cannot break the connection of the contacts.

[0018] 2. In this invention, by setting a chamber on the device, the vacuum extraction pipe can be fixed. When it is necessary to replace the vacuum extraction pipe, the clamp on the vacuum extraction pipe can be released, and then the vacuum extraction pipe can be removed and replaced, which facilitates the subsequent maintenance of the device by the staff. Furthermore, an electromagnetic driver is also installed on the outside of the contact device, which can be used to adjust the magnetic parameters or for maintenance. Attached Figure Description

[0019] Figure 1 This is a front cross-sectional view of the vacuum relay proposed in this invention. Figure 2 This is a top view of the vacuum relay proposed in this invention. Figure 3 This is a partial top view cross-sectional structural diagram of the chamber in the vacuum relay proposed in this invention; Figure 4 The vacuum relay proposed in this invention Figure 3 A magnified structural diagram of point A in the middle.

[0020] In the diagram: 1. Insulator; 2. Spring; 3. Coil mounting component; 4. Street rail; 5. First electrode; 6. Second electrode; 7. Vacuum extraction pipe; 8. Housing; 9. Electromagnetic actuator; 10. Fixing component; 11. Fixing mechanism; 111. Chamber; 112. Threaded rod; 113. Clamping block; 114. Slide groove; 115. Slider; 116. Threaded sleeve; 117. Pushing block; 12. Placement platform. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Reference Figure 1-4 : Example

[0023] A vacuum relay includes a housing 8. A rectangular opening is formed at the top of the housing 8, and an insulating component 1, T-shaped, is inserted into the opening. A hole is formed inside the insulating component 1, and a vertical second electrode 6, also T-shaped, is inserted into the hole. A horizontal fixing component 10 is fixedly connected to the inner wall of the housing 8, and a vertical electromagnetic actuator 9 is inserted into the fixing component 10. A spring 2 is fixedly connected to one side of the fixing component 10. A grounding bolt 4 is fixedly connected to the inner wall of the bottom of the housing 8, and a second... An electrode 5 is T-shaped, and the first electrode 5 and the second electrode 6 are parallel to each other. A spring piece 2 is located between the first electrode 5 and the street rail 4. Two coil mounting parts 3 located on both sides of the street rail 4 are inserted into the bottom inner wall of the housing 8. The coil mounting parts 3 have vertical magnetic drive coil mounting holes. A placement platform 12 is fixedly connected inside the housing 8. The placement platform 12 is fixedly connected to the spring piece 2. A vertical vacuum pumping pipe 7 is inserted into the top of the housing 8. A fixing mechanism 11 for fixing the vacuum pumping pipe 7 is fixedly connected to the top of the housing 8.

[0024] In this embodiment, the bottom of the housing 8 is provided with a hole that matches the size of the coil mounting component 3, and the coil mounting component 3 is fixedly inserted into the hole at the bottom of the housing 8.

[0025] Specifically, by providing a hole at the bottom of the housing 8 that matches the size of the coil mounting component 3, the coil mounting component 3 can be fixed in the hole. Inside the coil mounting component 3, there is a magnetic drive coil mounting hole, which allows for easy control of magnetic parameters. In addition, a vacuum extraction pipe 7 is provided to extract the gas inside the housing 8, preventing oxygen from entering the housing 8 and causing oxidation of the electrical components.

[0026] In this embodiment, the insulating component 1 is made of ceramic, and the vacuum extraction pipe 7 is made of copper.

[0027] Specifically, by making the insulating component 1 ceramic, the current can be insulated, preventing the current from entering the interior of the equipment through the insulating component 1, and by making the vacuum extraction pipe 7 copper, the vacuum extraction pipe 7 can be clamped.

[0028] In this embodiment, the inside of the fixing member 10 is provided with an opening that matches the size of the electromagnetic driver 9, and the electromagnetic driver 9 is inserted into the inside of the opening.

[0029] Specifically, by opening a hole inside the fixing member 10 that matches the size of the electromagnetic driver 9, the electromagnetic driver 9 can be fixed inside the opening to prevent it from falling out of the fixing member 10. Example

[0030] The vacuum relay, based on embodiment one, has a fixing mechanism 11 including a housing 111 inserted into the top of the housing 8. Threaded sleeves 116 are fixedly connected to both sides of the housing 111. Threaded rods 112 are threadedly connected inside the two threaded sleeves 116. A handle is fixedly connected to one end of the two threaded rods 112 away from the threaded sleeves 116.

[0031] In this embodiment, a vertical push block 117 is rotatably connected to one end of the two threaded rods 112 that are close to each other, and a plurality of clamping blocks 113 are fixedly connected to one side of the two push blocks 117 that are close to each other. The clamping blocks 113 are arc-shaped.

[0032] In this embodiment, two sliders 115 are fixedly connected to the upper and lower sides of the clamping block 113, and two horizontal bars are fixedly connected to the inner side wall of the chamber 111. The inside of the horizontal bars is provided with a groove 114, and the sliders 115 slide in the groove 114.

[0033] Specifically, by setting the threaded rod 112, when the threaded rod 112 is rotated, the threaded rod 112 can push the clamping block 113 to move inward, so that the clamping block 113 can clamp and fix the vacuum pumping pipe 7, preventing the vacuum pumping pipe 7 from shaking.

[0034] In this embodiment, the inner wall of the clamping block 113 is arc-shaped, and the arc of the inner wall of the clamping block 113 is equal to the arc of the outer wall of the vacuum pumping pipe 7. The inner wall of the clamping block 113 and the outer wall of the vacuum pumping pipe 7 are closely fitted together.

[0035] Specifically, by setting the inner wall of the clamping block 113 to be arc-shaped, the vacuum pumping pipe 7 can be clamped. Setting the arc of the inner wall of the clamping block 113 and the arc of the outer wall of the vacuum pumping pipe 7 to be equal can improve the stability and firmness of the clamping.

[0036] Working principle: During use, the housing 8 can seal the inside of the device to prevent oxygen from entering. Then, the vacuum pump and vacuum pipe 7 can be connected to vent the gas inside the housing 8 to prevent oxygen from entering the device and causing oxidation. At the same time, the seal can also prevent hair and other impurities from entering the device and affecting the contact connection, thus providing reliable protection for the electrodes. The electromagnetic driver 9 can be installed outside the contact device for adjusting magnetic parameters or maintenance. The first electrode 5 and the second electrode 6 are normally closed. The elastic force provided by the spring 2 keeps the first electrode 5 and the second electrode 6 closed. After the external magnetic force attracts the ground iron 4 below the first electrode 5, the first electrode 5 is pulled downward and the first electrode 5 and the second electrode 6 will be disconnected.

[0037] When the vacuum extraction tube 7 needs to be replaced, the threaded rod 112 can be rotated inside the threaded sleeve 116. This allows the threaded rod 112 to push or drive the pushing block 117 and the clamping block 113 to move inward or outward, allowing the clamping block 113 to clamp and release the vacuum extraction tube 7. When released, the vacuum extraction tube 7 can be replaced. Subsequently, by controlling the clamping block 113 to clamp, the effect of replacing the vacuum extraction tube 7 can be achieved. The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A vacuum relay, comprising a housing (8), characterized in that, The top of the housing (8) has a rectangular opening, and an insulating component (1) is inserted into the rectangular opening. The insulating component (1) is T-shaped, and a hole is opened inside the insulating component (1). A vertical second electrode (6) is inserted into the hole. The second electrode (6) is T-shaped. A horizontal fixing component (10) is fixedly connected to the inner wall of the housing (8). A vertical electromagnetic driver (9) is inserted inside the fixing component (10). A spring piece (2) is fixedly connected to one side of the fixing component (10). A street iron (4) is fixedly connected to the inner wall of the bottom of the housing (8). A first electrode (5) is inserted inside the street iron (4). The electrode (5) is T-shaped. The first electrode (5) and the second electrode (6) are parallel to each other. The spring (2) is located between the first electrode (5) and the street iron (4). Two coil mounting parts (3) located on both sides of the street iron (4) are inserted into the bottom inner wall of the housing (8). The coil mounting parts (3) have vertical magnetic drive coil mounting holes. The housing (8) has a fixed platform (12) inside. The platform (12) is fixedly connected to the spring (2). The top of the housing (8) has a vertical vacuum pumping pipe (7). The top of the housing (8) has a fixed fixing mechanism (11) for fixing the vacuum pumping pipe (7).

2. The vacuum relay according to claim 1, characterized in that, The fixing mechanism (11) includes a chamber (111) inserted into the top of the housing (8). Both sides of the chamber (111) are fixedly connected with threaded sleeves (116). The inside of each of the two threaded sleeves (116) is threaded with a threaded rod (112). The end of each of the two threaded rods (112) away from the threaded sleeve (116) is fixedly connected with a handle.

3. The vacuum relay according to claim 2, characterized in that, The two threaded rods (112) are rotatably connected to a vertical push block (117) at their close ends, and a plurality of clamping blocks (113) are fixedly connected to the close sides of the two push blocks (117), the clamping blocks (113) being arc-shaped.

4. The vacuum relay according to claim 3, characterized in that, Two sliders (115) are fixedly connected to the upper and lower sides of the clamping block (113). Two horizontal bars are fixedly connected to the inner wall of the chamber (111). A groove (114) is opened inside the horizontal bar. The slider (115) slides in the groove (114).

5. The vacuum relay according to claim 1, characterized in that, The bottom of the housing (8) has a hole that matches the size of the coil mounting component (3), and the coil mounting component (3) is fixedly inserted into the hole at the bottom of the housing (8).

6. The vacuum relay according to claim 1, characterized in that, The insulating component (1) is made of ceramic, and the vacuum extraction pipe (7) is made of copper.

7. The vacuum relay according to claim 3, characterized in that, The inner wall of the clamping block (113) is arc-shaped, and the arc of the inner wall of the clamping block (113) is equal to the arc of the outer wall of the vacuum pumping pipe (7). The inner wall of the clamping block (113) and the outer wall of the vacuum pumping pipe (7) are closely fitted together.

8. The vacuum relay according to claim 1, characterized in that, The fixing member (10) has an opening inside that matches the size of the electromagnetic driver (9), and the electromagnetic driver (9) is inserted into the opening.

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