A self-sealing explosion-proof transformer
The self-sealing explosion-proof transformer addresses fire expansion by isolating and extracting insulating oil using a self-sealing device with an oil storage tank and guide wheel mechanism, enhancing safety through negative pressure and flame retardants.
Patent Information
- Application Number
- CN202411252575.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2044-09-09
AI Technical Summary
Transformers can experience fire expansion due to leakage of insulating oil when the casing is damaged, leading to uncontrolled ignition and potential damage to other equipment.
A self-sealing explosion-proof transformer design with a self-sealing device that includes an oil storage tank and self-sealing box, which isolates insulating oil and reduces leakage by creating negative pressure to absorb oil and uses a guide wheel mechanism to minimize friction and sealing, along with a flame retardant system to prevent fire spread.
The design effectively prevents further leakage and fire spread by isolating insulating oil and using negative pressure to extract oil, while the flame retardant enhances safety performance.
Smart Images
Figure CN118762900B_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of power transformation equipment, and in particular to a self-sealed explosion-proof transformer. Background Art
[0002] The transformer is a very important electrical equipment, and in order to isolate the external air and improve its own transformation performance, insulating oil is injected into the inside of the casing to improve its working performance. However, when the transformer explodes and the casing is damaged, the leaked insulating oil may be ignited by the arc caused by the high voltage electricity, thereby causing a fire. If the insulating oil inside the transformer continues to leak, the fire area will increase, and there is a risk of loss of control and ignition of other transformers. Therefore, this application document proposes a self-sealed explosion-proof transformer to solve the above-mentioned problems. Summary of the invention
[0003] The present application proposes a self-sealing explosion-proof transformer, which has the advantage of being able to achieve self-sealing when the outer shell is damaged, and is used to solve the problem of fire expansion caused by leakage of insulating oil inside the transformer.
[0004] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: a self-sealed explosion-proof transformer, comprising a heat dissipation shell and a self-sealing device, wherein the self-sealing device is fixedly installed on the top of the heat dissipation shell, and the self-sealing device passes through the top of the heat dissipation shell and extends into the inner cavity of the heat dissipation shell, a thickened base is fixedly installed at the bottom of the inner cavity of the heat dissipation shell, a transformer device is fixedly installed on the top of the thickened base, slide rails are fixedly installed on the left and right sides of the inner wall of the heat dissipation shell, and a supporting device and a stroke device are fixedly installed on the inner side of the slide rail near the top and the bottom, respectively, a blocking seat is fixedly installed on the top of the thickened base at the position on both sides of the transformer device, and the top of the blocking seat is set as an inclined surface, an oil replenishing tank is fixedly installed on the left side of the outer surface of the heat dissipation shell, a fixing plate is fixedly installed on the top of the heat dissipation shell at a position on one side of the self-sealing device, an oil pipeline is arranged at the bottom of the oil replenishing tank, and one end of the oil pipeline is fixedly connected to the fixing plate, a connecting plate is fixedly installed at the top of the inner cavity of the heat dissipation shell near the left and right sides, and a limiting hole is opened at a position near the bottom on one side of the connecting plate, and the limiting hole is movably matched with the supporting device.
[0005] Furthermore, the self-sealing device comprises an oil storage tank and a self-sealing box. When the self-sealing box falls, the transformer equipment and most of the insulating oil can be isolated inside, thereby preventing the insulating oil from further leaking out.
[0006] Specifically, oil suction nozzles are arranged on both sides of the outer surface of the oil storage box near the top, a pipe is sleeved on the outer surface of the oil suction nozzle, and one end of the pipe is fixedly connected to the stroke device. During the falling process of the self-sealing box, the pressure of the cavity inside the oil storage box located above the self-sealing box becomes lower, and the generated negative pressure can absorb the insulating oil inside the heat dissipation shell, thereby further reducing the leakage of the insulating oil.
[0007] Specifically, an oil extraction port is provided on the top of the oil storage tank, and a cover is fixedly installed on the top of the oil extraction port. When an operator opens the cover, the insulating oil sucked into the oil storage tank can be extracted through the transformer equipment.
[0008] Specifically, a sliding sealing plate is fixedly installed on the top of the self-sealing box, and the sliding sealing plate is sleeved inside the oil storage tank. A wheel bin is provided at the bottom of the self-sealing box, and a rotating top groove is provided on the top of the wheel bin. A guide wheel is sleeved inside the rotating top groove, so that when the guide wheel keeps in contact with the supporting device and the supporting device needs to move laterally, its friction can be reduced to ensure that the guide wheel and the supporting device are separated.
[0009] Specifically, the contact surface between the sliding sealing plate and the oil storage tank is sealed to prevent the sucked insulating oil from seeping downward.
[0010] Specifically, the top of the wheel bin is set as an inclined surface and matches the inclined surface of the top of the blocking seat. A reset spring is provided at the joint between the guide wheel and the rotating top groove, and the reset spring can drive the guide wheel to reset.
[0011] Specifically, the outer surface of the self-sealing box contacts the front surface of the fixing plate, and the oil pipeline connected to the oil supply tank and fixed on the inner side of the fixing plate can be blocked during the falling process of the self-sealing box.
[0012] Furthermore, the supporting device includes a first sliding block, which is movably mounted on the sliding rail and can slide along the extension direction of the sliding rail.
[0013] Specifically, a coupling seat is fixedly installed at one end of the first slider, a push plate is sleeved on the outer surface of the coupling seat, a support seat is movably sleeved on one end of the push plate, and a first magnet is fixedly installed at the bottom of the first slider. During the sliding process of the first slider, the push plate will push the support seat to move horizontally.
[0014] Furthermore, the support seat is movably mounted inside the limiting hole in the initial state, and the push plate is in an inclined state in the initial state. The support seat will be limited by the limiting hole during the lateral movement.
[0015] Furthermore, the travel device includes a second slider, the end structure of the second slider is the same as that of the first slider, and the second slider is also movably installed inside the slide rail.
[0016] Specifically, a second magnet is fixedly installed at a position near the end of the top of the second slider, and a rotating connecting rod is movably sleeved on the left and right sides of the second magnet. A floating device is fixedly installed at one end of the rotating connecting rod. A circular hole is opened at a position near the front end of the top of the second slider, and the circular hole is connected to a pipe sleeved on the outer surface of the oil suction nozzle. When the floating device is immersed in insulating oil, it will be affected by buoyancy and move to the top of the second slider.
[0017] Furthermore, the floating device includes a buoy, a cover plate is fixedly installed on one end of the buoy, a separator tube is fixedly installed on one side of the cover plate, one end of the separator tube is in contact with the bottom of the buoy, a drain port is fixedly installed on the outer surface of the buoy, the drain port is connected to the inner cavity of the buoy, and a liquid blocking cover is fixedly installed on one end of the drain port.
[0018] Furthermore, the axis of the second magnet and the axis of the first magnet are located on the same center line, and the second magnet and the first magnet will attract each other when they are close to each other.
[0019] Furthermore, there is a flame retardant in the inner cavity of the float and in the space outside the separation tube, and the flame retardant is added through the discharge port.
[0020] This application has the following beneficial effects.
[0021] When an emergency occurs in the transformer and a hole appears in the casing, the self-sealing box will be triggered to fall, isolating the transformer equipment and most of the insulating oil inside the self-sealing box, thereby preventing the insulating oil from further leaking out and causing the fire to expand. In the process of the self-sealing box falling, the cavity generated inside the oil storage tank can extract the insulating oil inside the heat dissipation casing and outside the self-sealing box, thereby further reducing the leakage of insulating oil and improving the safety performance of the device. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] The accompanying drawings, which constitute a part of the specification, illustrate embodiments disclosed in the present application and, together with the description, serve to explain the principles disclosed in the present application.
[0023] The present disclosure may be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:
[0024] Figure 1 It is a structural diagram of the present invention;
[0025] Figure 2 It is a cross-sectional view of the structure of the present invention;
[0026] Figure 3 This is a main body diagram of the structural shell of the present invention;
[0027] Figure 4 A top view of the structural shell of the present invention;
[0028] Figure 5 The structure of the present invention Figure 4 Sectional view in the middle AA direction;
[0029] Figure 6 The structure of the present invention Figure 4 Cross-section in the middle BB direction;
[0030] Figure 7 This is a diagram of the self-sealing device of the structure of the present invention;
[0031] Figure 8 It is a right side view of the self-sealing device of the present invention;
[0032] Fig. 9 The structure of the present invention Figure 8 Enlarged view of point C in the middle;
[0033] Fig.10 The structure of the present invention Figure 8 Cross-section in the middle DD direction;
[0034] Fig.11 This is a diagram of the structural support device of the present invention;
[0035] Fig.12 It is a structural stroke device diagram of the present invention;
[0036] Fig.13 It is a cross-sectional view of the structural stroke device of the present invention.
[0037] In the figure; 1. heat dissipation shell; 2. self-sealing device; 21. oil storage tank; 22. self-sealing box; 23. oil suction nozzle; 24. oil extraction port; 25. sealing cover; 26. sliding sealing plate; 27. wheel compartment; 28. rotating top groove; 29. guide wheel; 201. reset spring; 3. thickened base; 4. transformer equipment; 5. slide rail; 6. supporting device; 61. first slider; 62. coupling seat; 63. push plate; 64. supporting seat; 65. first magnet; 7. stroke device; 71. second slider; 72. second magnet; 73. rotating connecting rod; 74. floating device; 741. buoy; 742. cover plate; 743. separator tube; 744. drain port; 745. liquid blocking cover; 8. blocking seat; 9. oil replenishing tank; 10. fixing plate; 11. connecting plate; 12. limiting hole. DETAILED DESCRIPTION
[0038] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0039] A self-sealed explosion-proof transformer, please refer to Figure 1-Figure 6 , including a heat dissipation shell 1 and a self-sealing device 2, the self-sealing device 2 is fixedly installed on the top of the heat dissipation shell 1, and the self-sealing device 2 passes through the top of the heat dissipation shell 1 and extends into the inner cavity of the heat dissipation shell 1, a thickened base 3 is fixedly installed at the bottom of the inner cavity of the heat dissipation shell 1, a transformer device 4 is fixedly installed on the top of the thickened base 3, and a slide rail 5 is fixedly installed on both sides of the inner wall of the heat dissipation shell 1. A support device 6 and a travel device 7 are fixedly installed at the inner side of the slide rail 5 near the top and the bottom, respectively. The top of the thickened base 3 is located at the positions on both sides of the transformer device 4. A sealing seat 8 is fixedly installed on the device, and the top of the sealing seat 8 is set as an inclined surface. An oil filling tank 9 is fixedly installed on the left side of the outer surface of the heat dissipation shell 1, and a fixing plate 10 is fixedly installed on the top of the heat dissipation shell 1 at a position on one side of the self-sealing device 2. An oil pipeline is set at the bottom of the oil filling tank 9, and one end of the oil pipeline is fixedly connected to the fixing plate 10. A connecting plate 11 is fixedly installed at a position near the left and right sides of the top of the inner cavity of the heat dissipation shell 1, and a limiting hole 12 is opened on one side of the connecting plate 11 near the bottom, and the limiting hole 12 is movably matched with the supporting device 6.
[0040] See also Figure 7-Figure 10 The self-sealing device 2 includes an oil storage tank 21 and a self-sealing box 22. The self-sealing box 22 can be lowered to isolate the transformer equipment 4 and most of the insulating oil inside, thereby preventing the insulating oil from further leaking.
[0041] See also Figure 2 and Figure 7-Figure 10 Oil suction nozzles 23 are provided on both sides of the outer surface of the oil storage tank 21 near the top, and a pipe is sleeved on the outer surface of the oil suction nozzle 23, and one end of the pipe is fixedly connected to the stroke device 7. During the falling process of the self-sealing box 22, the pressure of the cavity inside the oil storage tank 21 located above the self-sealing box 22 becomes lower, and the generated negative pressure can absorb the insulating oil inside the heat dissipation shell 1, thereby further reducing the leakage of the insulating oil.
[0042] See also Figure 2 and Figure 7-Figure 10 An oil extraction port 24 is provided at the top of the oil storage tank 21 , and a cover 25 is fixedly installed at the top of the oil extraction port 24 . When the operator opens the cover 25 , the insulating oil sucked into the oil storage tank 21 can be extracted through the transformer 4 .
[0043] See also Figure 2 and Figure 7-Figure 10A sliding sealing plate 26 is fixedly installed on the top of the self-sealing box 22, and the sliding sealing plate 26 is sleeved inside the oil storage tank 21. A wheel compartment 27 is provided at the bottom of the self-sealing box 22, and a rotating top groove 28 is provided at the top of the wheel compartment 27. A guide wheel 29 is sleeved inside the rotating top groove 28, so that when the guide wheel 29 keeps in contact with the support device 6 and the support device 6 needs to move laterally, its friction can be reduced to ensure that the guide wheel 29 and the support device 6 are separated.
[0044] See also Figure 7-Figure 10 The contact surface between the sliding sealing plate 26 and the oil storage tank 21 is sealed to prevent the sucked insulating oil from seeping down.
[0045] See also Figure 2 and Figure 7-Figure 10 The top of the wheel bin 27 is set as an inclined surface and matches the inclined surface of the top of the blocking seat 8. A reset spring 201 is set at the joint between the guide wheel 29 and the rotating top groove 28, and the reset spring 201 can drive the guide wheel 29 to reset.
[0046] See also Figure 2 and Figure 7-Figure 10 The outer surface of the self-sealing box 22 contacts the front side of the fixed plate 10. During the falling process of the self-sealing box 22, the oil pipeline connected to the oil replenishing tank 9 fixed on the inner side of the fixed plate 10 can be blocked, thereby preventing the oil replenishing tank 9 from continuing to supply oil after the heat dissipation shell 1 is broken, thereby preventing the leakage from being aggravated.
[0047] When the self-sealing box 22 falls, the guide wheel 29 will contact the blocking seat 8. Since the top of the blocking seat 8 is set as an inclined surface, when the guide wheel 29 contacts the top of the blocking seat 8, it will deflect toward the inside of the self-sealing box 22. At the same time, the inclined surface on the top of the blocking seat 8 cooperates with the wheel compartment 27 to achieve sealing, thereby avoiding the problem of the insulating oil enclosed in the self-sealing box 22 leaking through the wheel compartment 27 and causing the fire to spread, further improving the safety performance of the device. In addition, when the operator eliminates the fire and lifts the self-sealing box 22, the wheel compartment 27 and the blocking seat 8 are out of coordination, and the guide wheel 29 is out of contact with the blocking seat 8. The guide wheel 29 will be reset under the elastic force of the reset spring 201, so as to facilitate the next use.
[0048] When the self-sealing box 22 falls, the space above the self-sealing box 22 in the inner cavity of the oil storage tank 21 expands. Under this effect, the internal pressure of the oil storage tank 21 decreases and generates negative pressure. The negative pressure acts on the interior of the heat dissipation shell 1 through the oil suction nozzle 23 and the pipe connected to the outside of the oil suction nozzle 23, thereby extracting the insulating oil inside the heat dissipation shell 1 and outside the self-sealing box 22, thereby reducing the leakage of the insulating oil and improving the safety performance of the device.
[0049] See also Figure 6 and Fig.11The supporting device 6 includes a first slider 61 , which is movably mounted on the slide rail 5 and can slide along the extension direction of the slide rail 5 .
[0050] See also Fig.11 A coupling seat 62 is fixedly installed at one end of the first slider 61, a push plate 63 is sleeved on the outer surface of the coupling seat 62, and a support seat 64 is movably sleeved on one end of the push plate 63. A first magnet 65 is fixedly installed at the bottom of the first slider 61. During the sliding process of the first slider 61, the push plate 63 will push the support seat 64 to move horizontally.
[0051] A guide wheel 29 is provided inside the rotating top groove 28, so that when the guide wheel 29 keeps in contact with the support device 6 and the support device 6 needs to move laterally, the friction between the two can be reduced, ensuring that the guide wheel 29 and the support device 6 are separated, avoiding the problem that the support seat 64 is stuck and cannot move, and improving the stability of the device.
[0052] See also Figure 6 and Fig.11 In the initial state, the support seat 64 is movably installed inside the limiting hole 12, and the push plate 63 is in an inclined state in the initial state. The support seat 64 will be limited by the limiting hole 12 during the lateral movement.
[0053] See also Figure 6 and Figure 11-Figure 12 The travel device 7 includes a second slider 71 . The end structure of the second slider 71 is the same as that of the first slider 61 , and the second slider 71 is also movably installed inside the slide rail 5 .
[0054] See also Figure 7 and Fig.12 A second magnet 72 is fixedly installed at a position near the end of the top of the second slider 71, and a rotating connecting rod 73 is movably sleeved on the left and right sides of the second magnet 72. A floating device 74 is fixedly installed at one end of the rotating connecting rod 73. A round hole is opened at a position near the front end of the top of the second slider 71, and the round hole is connected to a pipe sleeved on the outer surface of the oil suction nozzle 23. The floating device 74 is immersed in the insulating oil and is affected by the buoyancy, thereby moving to the top of the second slider 71.
[0055] When insulating oil is injected into the heat dissipation housing 1, the floating device 74 moves upward due to the buoyancy until the floating device 74 moves to the top of the second slider 71, thereby dragging the second slider 71 to move upward synchronously until the second magnet 72 contacts and adsorbs the first magnet 65. At this time, the insulating oil continues to be injected, and the second slider 71 continues to move upward, driving the first slider 61 to move upward synchronously. In this process, the push plate 63 pushes the support seat 64 to move horizontally and extend from the inside of the limiting hole 12. At this time, the self-sealing device 2 is installed, and the guide wheel 29 contacts the top of the support seat 64, so that the guide wheel 29 cannot fall. If the transformer explodes and the heat dissipation housing When the heat dissipation housing 1 is damaged, the insulating oil inside the heat dissipation housing 1 leaks out, the insulating oil level inside the heat dissipation housing 1 drops, and the second slider 71 drops along the extension direction of the slide rail 5. The first slider 61 is dragged down synchronously by the attraction of the first magnet 65 and the second magnet 72. During this process, the push plate 63 drags the support seat 64 back to the inside of the limiting hole 12. At this time, the guide wheel 29 is out of contact with the support seat 64, and the self-sealing box 22 loses its supporting force and starts to fall, thereby sealing the transformer equipment 4 and most of the insulating oil inside the self-sealing box 22, thereby preventing further leakage of the insulating oil, avoiding further spread of the fire, and improving the safety performance of the device.
[0056] A circular hole is opened at a position near the front end of the top of the second slider 71, and the circular hole is connected to the pipe sleeved on the outer surface of the oil suction nozzle 23. The second slider 71 always floats above the insulating oil inside the heat dissipation shell 1 under the action of the buoyancy of the floating device 74, thereby ensuring that the pipe sleeved on the outer surface of the oil suction nozzle 23 can always be inserted below the insulating oil liquid level and will not contact the bottom of the inner cavity of the heat dissipation shell 1, so that it can stably extract the insulating oil in the inner cavity of the heat dissipation shell 1, and will not extend from the breach on the outside of the heat dissipation shell 1 and cause air to quickly enter the interior of the self-sealing box 22, resulting in the failure of negative pressure and the inability to stably extract the insulating oil, thereby improving the stability of the device during operation.
[0057] See also Fig.13 The floating device 74 includes a buoy 741, a cover plate 742 is fixedly installed at one end of the buoy 741, a separator tube 743 is fixedly installed on one side of the cover plate 742, one end of the separator tube 743 is in contact with the bottom of the buoy 741, a drain port 744 is fixedly installed on the outer surface of the buoy 741, the drain port 744 is connected to the inner cavity of the buoy 741, and a liquid blocking cover 745 is fixedly installed at one end of the drain port 744.
[0058] See also Figure 11-Figure 12 The axis of the second magnet 72 and the axis of the first magnet 65 are located on the same center line, and the second magnet 72 and the first magnet 65 will attract each other when they are close to each other.
[0059] See also Fig.13 There is flame retardant in the inner cavity of the float 741 and in the space outside the separation tube 743, and the flame retardant is added through the drain port 744.
[0060] When the floating device 74 moves to the top of the second slider 71 under the action of buoyancy, the drain port 744 rotates to face upward, and the operator can open the liquid blocking cover 745 to add the flame retardant to the inside of the float 741. After the addition is completed, the liquid blocking cover 745 does not need to be installed. When the insulating oil inside the heat dissipation housing 1 is exhausted due to leakage, the float 741 falls back to the bottom of the second slider 71 under the action of gravity. At this time, the drain port 744 faces downward, and the flame retardant flows out under the action of gravity and mixes with the insulating oil leaked from the inside of the heat dissipation housing 1, thereby achieving a good flame retardant effect and further improving the safety performance of the device.
[0061] The method of use of the present invention is as follows:
[0062] Before use, insulating oil is added through the opening at the top of the heat dissipation shell 1. The floating device 74 moves upward due to the buoyancy until the floating device 74 moves to the top of the second slider 71, thereby dragging the second slider 71 to move upward synchronously until the second magnet 72 contacts and adsorbs the first magnet 65. At this time, the insulating oil is continued to be injected, and the second slider 71 continues to move upward, and drives the first slider 61 to move upward synchronously. In this process, the push plate 63 pushes the support seat 64 to move horizontally and extend from the inside of the limiting hole 12. At this time, the self-sealing device 2 is installed, and the guide wheel 29 contacts the top of the support seat 64, so that the guide wheel 29 cannot fall. If the transformer explodes and the heat dissipation shell 1 is damaged, the heat dissipation shell 1 will be damaged. The insulating oil in the heat dissipation housing 1 leaks out, and the insulating oil level inside the heat dissipation housing 1 drops. The second slider 71 drops along the extension direction of the slide rail 5, and the first slider 61 is dragged down synchronously by the attraction of the first magnet 65 and the second magnet 72. During this process, the push plate 63 drags the support seat 64 back to the inside of the limit hole 12. At this time, the guide wheel 29 is out of contact with the support seat 64, and the self-sealing box 22 loses its supporting force and starts to fall, thereby sealing the transformer equipment 4 and most of the insulating oil inside the self-sealing box 22. The guide wheel 29 is provided inside the rotating top groove 28, so that when the guide wheel 29 keeps in contact with the support device 6 and the support device 6 needs to move laterally, the friction between the two can be reduced to ensure that the guide wheel 29 and the support device 6 are in contact. The guide wheel 29 will be reset under the elastic force of the reset spring 201, so as to facilitate the next use. When the self-sealing box 22 falls, the space above the self-sealing box 22 in the inner cavity of the oil storage tank 21 expands. Under this action, the internal pressure of the oil storage tank 21 increases. The negative pressure is strongly reduced to generate negative pressure, and the negative pressure acts on the inside of the heat dissipation shell 1 through the oil suction nozzle 23 and the pipe connected to the outside of the oil suction nozzle 23, so as to extract the insulating oil inside the heat dissipation shell 1 and outside the self-sealing box 22, thereby reducing the leakage of insulating oil. A circular hole is opened at a position near the front end of the top of the second slider 71, and the circular hole is connected to the pipe sleeved on the outer surface of the oil suction nozzle 23. The second slider 71 always floats above the insulating oil in the heat dissipation shell 1 under the buoyancy of the floating device 74, thereby ensuring that the pipe sleeved on the outer surface of the oil suction nozzle 23 can always be inserted below the insulating oil liquid level and will not contact the bottom of the inner cavity of the heat dissipation shell 1, so that it can stably extract the insulating oil in the inner cavity of the heat dissipation shell 1.And it will not extend from the breach outside the heat dissipation housing 1 and cause air to quickly enter the interior of the self-sealing box 22, resulting in the failure of negative pressure and the inability to stably extract the insulating oil. When the floating device 74 moves to the top of the second slider 71 under the action of buoyancy, the drain port 744 rotates to face upward. At this time, the operator can open the liquid stop cover 745 and add the flame retardant to the inside of the float 741. After the addition is completed, the liquid stop cover 745 does not need to be installed. When the insulating oil inside the heat dissipation housing 1 is exhausted due to leakage, the float 741 falls back to the bottom of the second slider 71 under the action of gravity. At this time, the drain port 744 faces downward, and the flame retardant flows out under the action of gravity and mixes with the insulating oil leaked from the inside of the heat dissipation housing 1, thereby achieving a good flame retardant effect.
Claims
1. A self-sealed explosion-proof transformer, characterized in that: The invention comprises a heat dissipation shell (1) and a self-sealing device (2), wherein the self-sealing device (2) is fixedly mounted on the top of the heat dissipation shell (1), and the self-sealing device (2) penetrates the top of the heat dissipation shell (1) and extends into the inner cavity of the heat dissipation shell (1), a thickened base (3) is fixedly mounted on the bottom of the inner cavity of the heat dissipation shell (1), a transformer device (4) is fixedly mounted on the top of the thickened base (3), and slide rails (5) are fixedly mounted on both left and right sides of the inner wall of the heat dissipation shell (1), and the inner side of the slide rails (5) near the top and the bottom are A support device (6) and a travel device (7) are fixedly mounted on the device, respectively; a blocking seat (8) is fixedly mounted on the top of the thickened base (3) at a position located on both sides of the transformer device (4); the top of the blocking seat (8) is arranged as an inclined surface; an oil replenishing tank (9) is fixedly mounted on the left side of the outer surface of the heat dissipation housing (1); a fixing plate (10) is fixedly mounted on the top of the heat dissipation housing (1) at a position located on one side of the self-sealing device (2); an oil delivery pipe is arranged at the bottom of the oil replenishing tank (9), and one end of the oil delivery pipe is connected to the fixing plate (10). ) are fixedly connected, a connecting plate (11) is fixedly installed at a position near the left and right sides of the inner cavity top of the heat dissipation housing (1), a limiting hole (12) is provided at a position near the bottom on one side of the connecting plate (11), and the limiting hole (12) is movably matched with the supporting device (6); the self-sealing device (2) comprises an oil storage box (21) and a self-sealing box (22), oil suction nozzles (23) are provided at positions near the top on both sides of the outer surface of the oil storage box (21), and a pipe is sleeved on the outer surface of the oil suction nozzle (23), and one end of the pipe is connected to the supporting device (6). The travel device (7) is fixedly connected, the top of the oil storage box (21) is provided with an oil extraction port (24), the top of the oil extraction port (24) is fixedly mounted with a sealing cover (25), the top of the self-sealing box (22) is fixedly mounted with a sliding sealing plate (26), the sliding sealing plate (26) is sleeved inside the oil storage box (21), the bottom of the self-sealing box (22) is provided with a wheel bin (27), the top of the wheel bin (27) is provided with a rotating top groove (28), and the inside of the rotating top groove (28) is sleeved with a guide wheel (29); The contact surface between the sliding sealing plate (26) and the oil storage tank (21) is sealed, the top of the wheel compartment (27) is arranged as an inclined surface and matches the inclined surface of the top of the blocking seat (8), and a return spring (201) is arranged at the socket joint between the guide wheel (29) and the rotating top groove (28); The outer surface of the self-sealing box (22) contacts the front surface of the fixed plate (10); the travel device (7) comprises a second slider (71); a second magnet (72) is fixedly mounted on the top of the second slider (71) near the end; a rotating connecting rod (73) is movably sleeved on the left and right sides of the second magnet (72); a floating device (74) is fixedly mounted on one end of the rotating connecting rod (73); a circular hole is opened on the top of the second slider (71) near the front end, and the circular hole is connected to a pipe sleeved on the outer surface of the oil suction nozzle (23).
2. A self-sealing explosion-proof transformer according to claim 1, characterized in that: The supporting device (6) comprises a first slider (61), one end of which is fixedly mounted with a coupling seat (62), an outer surface of the coupling seat (62) is sleeved with a push plate (63), one end of the push plate (63) is movably sleeved with a supporting seat (64), and a first magnet (65) is fixedly mounted on the bottom of the first slider (61); The support seat (64) is movably mounted inside the slide rail (5).
3. A self-sealing explosion-proof transformer according to claim 2, characterized in that: In an initial state, the support seat (64) is movably mounted inside the limiting hole (12), and the push plate (63) is in an inclined state in an initial state.
4. The self-sealing explosion-proof transformer according to claim 1, characterized in that: The floating device (74) comprises a buoy (741), a cover plate (742) being fixedly mounted on one end of the buoy (741), a separator tube (743) being fixedly mounted on one side of the cover plate (742), one end of the separator tube (743) being in contact with the bottom of the buoy (741), a liquid discharge port (744) being fixedly mounted on the outer surface of the buoy (741), the liquid discharge port (744) being connected to the inner cavity of the buoy (741), and a liquid blocking cover (745) being fixedly mounted on one end of the liquid discharge port (744).
5. A self-sealing explosion-proof transformer according to claim 4, characterized in that: The axis of the second magnet (72) and the axis of the first magnet (65) are located on the same center line.
6. A self-sealing explosion-proof transformer according to claim 4, characterized in that: The inner cavity of the float (741) and the space outside the separation tube (743) contain a flame retardant, and the flame retardant is added through the liquid discharge port (744).