Safety performance detection device for explosion-proof electrical equipment

Abstract

The invention discloses a safety performance detection device for explosion-proof electrical equipment, and relates to the technical field of safety detection equipment. The device comprises a shell, the shell comprises a temperature rise power generation assembly and an elastic extrusion assembly, and the temperature rise power generation assembly comprises a coil fixed in the shell. When mercury in a mercury tube pushes a second piston block due to short circuit of the explosion-proof transformer, the second piston block pushes a connecting block to move, then the connecting block drives an inserting rod to be separated from the interior of an inserting hole, and a first spring pulls a magnetic rod to move to penetrate through a coil to generate induction current; and the current is transmitted to the external electric controller through the wire, so that the external electric controller closes the power supply effect on the explosion-proof transformer, and therefore, the current can be transmitted through the wire without supplying an external power supply, so that the external electric controller closes the power supply effect on the explosion-proof transformer, and further damage to the explosion-proof transformer is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of safety detection equipment, and in particular to a safety performance detection device for explosion-proof electrical equipment. Background Art

[0002] During the inspection process of explosion-proof electrical equipment, temperature rise detection equipment is mainly used for equipment involving overload protection and temperature control. Usually, these equipment may face the risk of overheating or overload when starting. Therefore, temperature rise detection equipment is needed to ensure that the equipment operates within a safe temperature range to prevent safety hazards caused by overload or excessive temperature.

[0003] A Chinese patent (application number: CN202120669228.5) discloses a test device for detecting the temperature rise of transformers and switches, including a box body, the box body having a liquid oil tank, and a transformer body fixedly installed inside the liquid oil tank. The test device for detecting the temperature rise of transformers and switches is configured such that when an explosion occurs in the transformer body inside the liquid oil tank, the explosion instantly releases a large amount of gas and heat, causing a very high pressure to be formed in the liquid oil tank. First, the pressure acts on the curved plate, and a certain buffering effect is achieved through the deformation of the curved plate. At the same time, when the curved plate deforms, the curved plate acts on the slide rail, forcing the slide rail to be on the fixed guide rail, separating the air relief cover from the pressure relief port, and connecting the pressure relief port on the box body to the outside world. When the pressure in the liquid oil tank is too high, the pressure in the liquid oil tank is released through the explosion-proof structure, effectively achieving the effect of reducing the splash of waste after the liquid oil tank is damaged, and reducing the damage caused by the explosion.

[0004] This patent and the prior art have the following technical problems in actual use:

[0005] 1. Existing temperature rise detection equipment generally requires an uninterrupted supply of DC power to ensure that it is triggered and started in the event of a fire. Existing temperature rise detection equipment is easily affected by a sudden short circuit in explosion-proof electrical equipment. The short circuit may affect the normal use of the temperature rise detection equipment, resulting in the inability to trigger the external power control equipment to stop the power supply to the explosion-proof electrical equipment. At this time, the explosion-proof electrical equipment will cause the temperature to rise rapidly due to the short circuit, causing damage to the explosion-proof electrical equipment. Therefore, it is necessary to improve it.

[0006] 2. In order to prevent the impact of short circuit, the existing temperature rise detection equipment generally needs to be powered by multiple dry batteries. When the battery of the existing temperature rise detection equipment is exhausted, it is still unable to trigger the power control device to stop powering the explosion-proof electrical equipment. Therefore, it needs to be improved. Summary of the Invention

[0007] The purpose of the present invention is to solve the above problems and provide a safety performance detection device for explosion-proof electrical equipment.

[0008] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0009] A safety performance detection device for explosion-proof electrical equipment, comprising a housing, wherein the housing comprises a temperature-rise power generation component and an elastic extrusion component;

[0010] Among them, the temperature-rise power generation component includes a coil fixed inside the shell, a magnetic rod is provided inside the coil, a moving rod is fixed to the upper end of the magnetic rod, the upper end of the moving rod passes through the shell and is provided with a jack located outside the shell, the upper end of the magnetic rod is fixed with a first spring, the other end of the first spring is fixedly connected to the inner wall of the shell, the inside of the jack is movably sleeved with a plug rod, the other end of the plug rod is fixed with a connecting block, the other end of the connecting block is connected to the second piston block through an elastic extrusion assembly, the outer surface of the second piston block is movably sleeved with a mercury tube for detecting an explosion-proof transformer, the bottom of the mercury tube is fixed with a fixed block, the bottom of the fixed block is fixedly connected to the top of the shell, and the coil is provided with a wire connected to an external control device.

[0011] Furthermore, the elastic extrusion component includes a blocking component, a rebound component and a pushing component;

[0012] The pushing assembly includes a connecting rod fixed on the connecting block, and the other end of the connecting rod is fixedly connected to a first piston block movably sleeved on the inner wall of the mercury tube.

[0013] Furthermore, the rebound assembly includes a second spring fixed on the first piston block, and the other end of the second spring is fixedly connected to the second piston block.

[0014] Furthermore, the blocking assembly includes a collar block movably sleeved on the outer surface of the connecting rod, and the outer surface of the collar block is fixedly sleeved on the inner wall of the mercury tube.

[0015] Furthermore, the outer surface of the moving rod is square and smooth.

[0016] Furthermore, a carbon dioxide box is fixedly installed on the top of the shell, an exhaust pipe spraying toward the explosion-proof transformer is fixedly installed on the lower end of the carbon dioxide box, a moving block is movably connected to the lower end of the exhaust pipe, and the other end of the moving block is fixedly connected to a magnetic rod.

[0017] Furthermore, a first round block and a second round block are fixedly installed inside the lower end of the carbon dioxide box, respectively. A rotating rod is movably sleeved inside the first round block and the second round block. The outer surface of the rotating rod is fixedly sleeved with a fan impeller located below the exhaust pipe. The outer surface of the rotating rod is fixedly sleeved with limit blocks located at both ends of the second round block and the first round block.

[0018] Furthermore, a rotating shaft is movably sleeved between the first round block and the second round block, a rotating block is fixedly sleeved on the outer surface of the rotating shaft, a gong is fixedly connected to the lower end of the rotating block, and a striking hammer is fixedly installed at equal intervals in a ring on the outer surface of the rotating rod.

[0019] Furthermore, a valve tube is fixedly installed on the upper end of the carbon dioxide box.

[0020] Furthermore, side blocks are fixedly mounted on both ends of the carbon dioxide box, and mounting holes are provided inside the side blocks.

[0021] The beneficial effects of the present invention are as follows:

[0022] 1. In the present invention, when the mercury inside the mercury tube pushes the second piston block due to a short circuit in the explosion-proof transformer, the second piston block pushes the connecting block to move, and then the connecting block drives the insertion rod to separate from the inside of the socket, so that the first spring pulls the magnetic rod to move through the coil to generate an induced current. The current is transmitted to the external control device through the wire, so that the external control device turns off the power supply to the explosion-proof transformer. In this way, current can be transmitted through the wire without the need for an external power supply, so that the external control device turns off the power supply to the explosion-proof transformer, thereby avoiding further damage to the explosion-proof transformer.

[0023] 2. In the present invention, when the mercury inside the mercury tube expands due to heat, the mercury will push the first piston block to contact the collar block through the second piston block and the second spring, so that the first piston block is blocked by the collar block and the second spring is compressed. As the mercury continues to expand, only the second spring will be compressed and the mercury tube will not be burst. When the detection equipment is not damaged, the moving rod is squeezed at this time, so that the moving rod drives the magnetic rod to move into the coil and stretch the first spring, and then the insertion rod is pulled into the inside of the socket to fix the moving rod for subsequent use.

[0024] 3. In the present invention, when the magnetic rod moves due to a short circuit in the explosion-proof transformer, the magnetic rod drives the moving block to move, thereby releasing the block from blocking the exhaust pipe, so that the carbon dioxide inside the carbon dioxide box is ejected through the exhaust pipe to cool the explosion-proof transformer and extinguish the fire. At the same time, the carbon dioxide blows the fan impeller to rotate, so that the rotating rod drives the hammer to rotate and strike the gong, and the gong will continuously make sounds to remind the operator to handle the explosion-proof transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the present invention;

[0026] Figure 2 is a front cross-sectional schematic diagram of the carbon dioxide box of the present invention;

[0027] Figure 3 is a schematic diagram of the housing of the present invention;

[0028] Figure 4 is a front cross-sectional schematic diagram of the housing of the present invention;

[0029] Figure 5 is a half-section schematic diagram of the movable rod and the mercury tube of the present invention;

[0030] Figure 6 This invention Figure 5 A partial enlarged schematic diagram of point A in the middle.

[0031] Figure numerals: 1. outer shell; 2. coil; 3. wire; 4. magnetic rod; 5. first spring; 6. moving rod; 7. jack; 8. plug rod; 9. connecting block; 10. connecting rod; 11. first piston block; 12. second spring; 13. second piston block; 14. mercury tube; 15. collar block; 16. fixed block; 17. carbon dioxide box; 18. exhaust pipe; 19. moving block; 20. first round block; 21. second round block; 22. rotating rod; 23. impeller; 24. knocking hammer; 25. limit block; 26. rotating shaft; 27. rotating block; 28. gong; 29. valve pipe; 30. side block; 31. mounting hole. DETAILED DESCRIPTION

[0032] To make the objectives, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0033] Example 1, as Figures 1-6 As shown, a safety performance detection device for explosion-proof electrical equipment includes a housing 1, which includes a temperature-rise power generation component and an elastic extrusion component;

[0034] Among them, the temperature-rise power generation component includes a coil 2 fixed inside the outer shell 1, a magnetic rod 4 is provided inside the coil 2, a moving rod 6 is fixed to the upper end of the magnetic rod 4, the upper end of the moving rod 6 passes through the outer shell 1 and is provided with a socket 7 located outside the outer shell 1, a first spring 5 is fixed to the upper end of the magnetic rod 4, the other end of the first spring 5 is fixedly connected to the inner wall of the outer shell 1, a plug rod 8 is movably sleeved inside the socket 7, a connecting block 9 is fixed to the other end of the plug rod 8, the other end of the connecting block 9 is connected to the second piston block 13 through an elastic extrusion assembly, the outer surface of the second piston block 13 is movably sleeved with a mercury tube 14 for detecting an explosion-proof transformer, a fixed block 16 is fixed to the bottom of the mercury tube 14, and the bottom of the fixed block 16 is fixedly connected to the top of the outer shell 1, and a wire 3 connected to an external control device is provided on the coil 2.

[0035] When the mercury inside the mercury tube 14 expands due to the heat caused by the short circuit of the explosion-proof transformer and pushes the second piston block 13 to move, the second piston block 13 pushes the connecting block 9 to move through the elastic squeezing component, so that the connecting block 9 drives the insertion rod 8 to disengage from the inside of the socket 7, and then the first spring 5 pulls the magnetic rod 4 to move. The magnetic rod 4 passes through the coil 2 to generate an induced current, and the current is transmitted to the external control device through the wire 3, so that the external control device turns off the power supply to the explosion-proof transformer. In this way, current can be transmitted through the wire 3 without the need for an external power supply, so that the external control device turns off the power supply to the explosion-proof transformer, thereby avoiding further damage to the explosion-proof transformer.

[0036] Example 2, as Figure 5-Figure 6 As shown, the elastic squeezing component includes a blocking component, a rebound component and a pushing component;

[0037] The pushing assembly includes a connecting rod 10 fixed on the connecting block 9 , and the other end of the connecting rod 10 is fixedly connected to a first piston block 11 movably sleeved with the inner wall of the mercury tube 14 .

[0038] Through the design of the connecting block 9, the connecting rod 10 and the first piston block 11, when the connecting block 9 moves, the connecting rod 10 drives the first piston block 11 to move along the inner wall of the mercury tube 14, thereby achieving the purpose of moving the first piston block 11.

[0039] Example 3, as Figure 5 As shown, the rebound assembly includes a second spring 12 fixed on the first piston block 11 , and the other end of the second spring 12 is fixedly connected to the second piston block 13 .

[0040] When the first piston block 11 moves, the first piston block 11 pushes the second piston block 13 to move via the second spring 12 , thereby causing the second piston block 13 to squeeze the mercury inside the mercury tube 14 .

[0041] Example 4, as Figure 5-Figure 6 As shown, the blocking assembly includes a collar block 15 movably sleeved on the outer surface of the connecting rod 10 , and the outer surface of the collar block 15 is fixedly sleeved on the inner wall of the mercury tube 14 .

[0042] Due to the design of the collar block 15, when the mercury inside the mercury tube 14 expands due to heat, the mercury will push the first piston block 11 to contact the collar block 15 through the second piston block 13 and the second spring 12, so that the first piston block 11 is blocked by the collar block 15 and compresses the second spring 12. As the mercury continues to expand, only the second spring 12 will be compressed, and the mercury tube 14 will not be squeezed and burst, thereby achieving the purpose of preventing the mercury from expanding and bursting the mercury tube 14 due to heat.

[0043] Furthermore, the outer surface of the moving rod 6 is square and smooth.

[0044] The square design of the movable rod 6 prevents the movable rod 6 from rotating, thereby allowing the insertion rod 8 to be better aligned with the insertion hole 7 and inserted.

[0045] Example 5, as Figure 2-Figure 4 As shown, a carbon dioxide box 17 is fixedly installed on the top of the shell 1, and an exhaust pipe 18 spraying toward the explosion-proof transformer is fixedly installed at the lower end of the carbon dioxide box 17. The lower end of the exhaust pipe 18 is movably connected to a moving block 19, and the other end of the moving block 19 is fixedly connected to the magnetic rod 4.

[0046] When the mercury inside the mercury tube 14 expands due to the heat caused by the short circuit of the explosion-proof transformer and pushes the second piston block 13 to move, the second piston block 13 pushes the connecting block 9 to move through the elastic squeezing component, so that the connecting block 9 drives the insertion rod 8 to disengage from the inside of the socket 7, and then the first spring 5 pulls the magnetic rod 4 to move. The magnetic rod 4 passes through the coil 2 to generate an induced current, and the current is transmitted to the external control device through the wire 3, so that the external control device turns off the power supply to the explosion-proof transformer. At the same time, the magnetic rod 4 will drive the moving block 19 to move, so that the moving block 19 releases the obstruction of the exhaust pipe 18, so that the carbon dioxide inside the carbon dioxide box 17 is ejected through the exhaust pipe 18 to cool the explosion-proof transformer and extinguish the fire.

[0047] Example 6: Figure 2 As shown, the interior of the lower end of the carbon dioxide box 17 is respectively fixedly installed with a first round block 20 and a second round block 21, the interior of the first round block 20 and the second round block 21 is movably sleeved with a rotating rod 22, the outer surface of the rotating rod 22 is fixedly sleeved with a fan wheel 23 located below the exhaust pipe 18, the outer surface of the rotating rod 22 is fixedly sleeved with limit blocks 25 located at both ends of the second round block 21 and the first round block 20, a rotating shaft 26 is movably sleeved between the first round block 20 and the second round block 21, the outer surface of the rotating shaft 26 is fixedly sleeved with a rotating block 27, the lower end of the rotating block 27 is fixedly connected to a gong 28, and the outer surface of the rotating rod 22 is fixedly installed with a striking hammer 24 at equal intervals in a ring.

[0048] When the exhaust pipe 18 sprays out carbon dioxide, at this time, since the impeller 23 is provided under the exhaust pipe 18, the carbon dioxide will blow the impeller 23 to rotate, and then the impeller 23 will rotate along the inner walls of the second round block 21 and the first round block 20 through the rotating rod 22, so that the rotating rod 22 drives the knocking hammer 24 to rotate, and then the knocking hammer 24 rotates and hits the gong 28, and the knocked gong 28 drives the rotating block 27 to rotate with the rotating shaft 26 as the axis. At this time, due to the influence of gravity on the gong 28 and the rotating block 27, the gong 28 and the rotating block 27 will reset after the rotation of the knocking hammer 24, so that the subsequent rotating knocking hammer 24 will continuously hit the gong 28, and then the gong 28 will continuously make a sound, thereby reminding the operator to handle the explosion-proof transformer.

[0049] Furthermore, a valve pipe 29 is fixedly mounted on the upper end of the carbon dioxide tank 17 .

[0050] Through the design of the valve tube 29, when there is no carbon dioxide inside the carbon dioxide tank 17, the operator opens the valve tube 29 to introduce carbon dioxide into the carbon dioxide tank 17 until the carbon dioxide tank 17 is full. After the carbon dioxide tank 17 is full, the valve tube 29 is opened, thereby achieving the purpose of replenishing carbon dioxide inside the carbon dioxide tank 17.

[0051] Furthermore, side blocks 30 are fixedly mounted on both ends of the carbon dioxide box 17 , and mounting holes 31 are formed inside the side blocks 30 .

[0052] Through the design of the side block 30 and the mounting hole 31, the operator can fix the side block 30 in the box with bolts, and place the carbon dioxide box 17 above the explosion-proof transformer in the box. At this time, the mercury tube 14 on the shell 1 can detect the temperature of the explosion-proof transformer and take appropriate measures.

[0053] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A safety performance detection device for explosion-proof electrical equipment, comprising a housing (1), characterized in that: The housing (1) comprises a temperature-rise power generation component and an elastic extrusion component; The temperature-rise power generation assembly comprises a coil (2) fixed inside a housing (1), a magnetic rod (4) is provided inside the coil (2), a movable rod (6) is fixed to the upper end of the magnetic rod (4), the upper end of the movable rod (6) passes through the housing (1) and is provided with a socket (7) located outside the housing (1), a first spring (5) is fixed to the upper end of the magnetic rod (4), the other end of the first spring (5) is fixedly connected to the inner wall of the housing (1), an insert rod (8) is movably sleeved inside the socket (7), a connecting block (9) is fixed to the other end of the insert rod (8), the other end of the connecting block (9) is connected to the second piston block (13) through an elastic extrusion assembly, a mercury tube (14) for detecting an explosion-proof transformer is movably sleeved on the outer surface of the second piston block (13), a fixing block (16) is fixed to the bottom of the mercury tube (14), the bottom of the fixing block (16) is fixedly connected to the top of the housing (1), and a wire (3) connected to an external control device is provided on the coil (2).

2. The explosion-proof electrical equipment safety performance detection device according to claim 1, characterized in that: The elastic extrusion component includes a blocking component, a rebound component and a pushing component; The pushing assembly comprises a connecting rod (10) fixed on a connecting block (9), and the other end of the connecting rod (10) is fixedly connected to a first piston block (11) movably sleeved on the inner wall of a mercury tube (14).

3. The explosion-proof electrical equipment safety performance detection device according to claim 2, characterized in that: The rebound assembly comprises a second spring (12) fixed on the first piston block (11), and the other end of the second spring (12) is fixedly connected to the second piston block (13).

4. The explosion-proof electrical equipment safety performance detection device according to claim 3, characterized in that: The blocking assembly comprises a collar block (15) movably sleeved on the outer surface of the connecting rod (10), and the outer surface of the collar block (15) is fixedly sleeved on the inner wall of the mercury tube (14).

5. The explosion-proof electrical equipment safety performance detection device according to claim 1, characterized in that: The outer surface of the moving rod (6) is square and smooth.

6. The explosion-proof electrical equipment safety performance detection device according to claim 1, characterized in that: A carbon dioxide box (17) is fixedly mounted on the top of the housing (1), an exhaust pipe (18) for spraying toward the explosion-proof transformer is fixedly mounted on the lower end of the carbon dioxide box (17), a moving block (19) is movably connected to the lower end of the exhaust pipe (18), and a magnetic rod (4) is fixedly connected to the other end of the moving block (19).

7. The explosion-proof electrical equipment safety performance detection device according to claim 6, characterized in that: A first round block (20) and a second round block (21) are fixedly installed inside the lower end of the carbon dioxide box (17), and a rotating rod (22) is movably sleeved inside the first round block (20) and the second round block (21). The outer surface of the rotating rod (22) is fixedly sleeved with an impeller (23) located below the exhaust pipe (18), and the outer surface of the rotating rod (22) is fixedly sleeved with limit blocks (25) located at both ends of the second round block (21) and the first round block (20).

8. The explosion-proof electrical equipment safety performance detection device according to claim 7, characterized in that: A rotating shaft (26) is movably sleeved between the first round block (20) and the second round block (21); a rotating block (27) is fixedly sleeved on the outer surface of the rotating shaft (26); a gong (28) is fixedly connected to the lower end of the rotating block (27); and a striking hammer (24) is fixedly installed on the outer surface of the rotating rod (22) at equal intervals in an annular manner.

9. The explosion-proof electrical equipment safety performance detection device according to claim 6, characterized in that: A valve pipe (29) is fixedly mounted on the upper end of the carbon dioxide box (17).

10. The explosion-proof electrical equipment safety performance detection device according to claim 6, characterized in that: Side blocks (30) are fixedly mounted on both ends of the carbon dioxide box (17), and mounting holes (31) are provided inside the side blocks (30).

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