Explosion-proof and fire-proof pressure relief device of power transformer

Abstract

The utility model discloses an explosion-proof and fire-proof pressure relief device of a power transformer, and relates to the technical field of transformers. The anti-explosion and fireproof pressure relief device for the power transformer comprises a box body, and a fire extinguishing mechanism used for treating a fire disaster is fixedly installed on the outer side of the box body; and the fire extinguishing mechanism comprises an electric rod, the output end of the electric rod is fixedly provided with a spraying disc seat used for treating a fire, and the outer side of the spraying disc seat is fixedly provided with a three-way pipe. The environment of the top of the box body is monitored in real time through power-on operation of a fire sensor, and then two sets of spraying disc bases are driven to move vertically through power-on operation of an electric rod, so that the top of the box body is safely enclosed by the spraying disc bases; and a first electromagnetic valve pipe is electrified to operate, so that high-pressure gas and dry powder in the fire extinguisher are conveyed to the top of the box body for fire extinguishing operation, meanwhile, electric sparks generated by electric explosion of the device can be conveniently shielded through a spraying disc seat, and the functions of automatic fire extinguishing and explosion prevention of the device are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to an explosion-proof and fire-proof pressure relief device for a power transformer. Background Art

[0002] Transformers are divided into distribution transformers, oil-immersed transformers, etc. They are one of the auxiliary equipment for power transmission. The voltage-changing characteristics of transformers can facilitate current transmission, making it easy to step up and down the transmission current, thereby meeting the demand for long-distance current use.

[0003] When using a transformer, an explosion-proof and fire-proof pressure relief device for an electric transformer is required to provide convenience for transmitting current when using the transformer. Among them, the "electric transformer" disclosed in the application number "CN206595120U" has solved the various disadvantages of overheating and burning, or even explosion dangers during continuous use.

[0004] However, there are still many defects in the actual use of transformers with similar structures, such as: the device does not have the function of automatic fire extinguishing and explosion prevention, overload of the device is likely to cause fire and thus cause injuries to operators, reducing the safety effect of using the device, and also reducing the intelligent effect of using the device. At the same time, it does not have the function of intelligent pressure relief, and excessive pressure inside the device causes transformer oil leakage, and too little pressure easily leads to unstable operation of the device, reducing the automation effect of the device. Therefore, it is necessary to design an explosion-proof and fire-proof pressure relief device for power transformers. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides an explosion-proof and fire-proof pressure relief device for a power transformer to solve the above problems.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: an explosion-proof and fire-proof pressure relief device for a power transformer, comprising a box body, a fire extinguishing mechanism for handling fire is fixedly installed on the outside of the box body, a pressure cabin is fixedly installed on one side of the box body, and an automatic pressure relief mechanism for relieving pressure on the transformer is fixedly installed on one side of the pressure cabin;

[0007] The fire extinguishing mechanism comprises an electric rod, a spray disc seat for handling fire is fixedly mounted on the output end of the electric rod, a three-way pipe is fixedly mounted on the outside of the spray disc seat, a fire extinguisher is fixedly mounted on the bottom of the box, and a first solenoid valve pipe is fixedly mounted on one end of the fire extinguisher;

[0008] The automatic pressure relief mechanism comprises a storage box, and a second electromagnetic valve tube for automatically relieving pressure on the pressure chamber is fixed on one side of the top of the storage box.

[0009] Preferably, a wiring row is fixedly mounted on the top of the box body, wiring terminals are fixedly mounted at equal intervals on the top of the box body, and a fire sensor is fixedly mounted on the inner side of the wiring terminals.

[0010] Preferably, a pipe fitting is fixedly installed on one side of the first solenoid valve tube, and one end of the pipe fitting is fixed to the first pressure gauge.

[0011] Preferably, a water pump is fixedly installed on the other side of the top of the storage box, and a third solenoid valve tube connected to one side of the pressure cabin is fixedly installed on one side of the water pump.

[0012] Preferably, a plurality of groups of transformer bodies are equidistantly installed inside the pressure cabin, a transformer cooling body is fixedly installed on one side of the top of the box body, and a second pressure gauge is fixedly installed on one side of the transformer cooling body.

[0013] Preferably, support feet are fixedly installed on both sides of the bottom of the box body, and a resistance plate is fixedly installed on the bottom of the support feet.

[0014] Beneficial Effects

[0015] The utility model provides an explosion-proof and fire-proof pressure relief device for a power transformer. Compared with the prior art, it has the following beneficial effects:

[0016] 2. The fire sensor is powered on to monitor the environment on the top of the box in real time. When the load on the terminal block is too large and a fire occurs, the electric rod is powered on to drive the two sets of spray disc seats to move vertically, so that the spray disc seats can safely enclose the top of the box. The first solenoid valve tube is powered on to transport the high-pressure gas and dry powder inside the fire extinguisher to the top of the box for fire extinguishing. At the same time, the spray disc seat can easily block the electric sparks generated by the electrical explosion of the device, realizing the automatic fire extinguishing and explosion-proof functions of the device, increasing the safety effect of using the device, avoiding the problem of operator injury caused by explosion caused by fire in the device, and increasing the intelligent effect of the device.

[0017] 1. The transformer oil inside the pressure cabin is monitored in real time through the second pressure gauge. When it is detected that the transformer oil inside the pressure cabin exceeds the preset pressure value, the second solenoid valve tube is controlled by the wire to release the transformer oil inside the pressure cabin to the specified pressure value, and then the pressure gas inside the storage box can be released through the slots and mesh plates on the top of the storage box. On the contrary, when the second pressure gauge detects that the pressure value inside the pressure cabin is less than the preset value, the water pump and the third solenoid valve tube are powered on to transport the transformer oil to the inside of the pressure cabin, so that the transformer oil inside the pressure cabin is at a normal pressure value, realizing the function of intelligent pressure relief, avoiding the leakage of transformer oil caused by excessive pressure inside the device, and solving the problem of unstable operation of the device caused by too low pressure inside the device, thereby increasing the automation effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 It is a front cross-sectional structural schematic diagram of the utility model.

[0020] Figure 3 It is a schematic diagram of the partial structure of the fire extinguishing mechanism of the utility model.

[0021] Figure 4 It is a partial structural schematic diagram of the automatic pressure relief mechanism of the utility model.

[0022] In the figure: 1. Box body; 101. Terminal block; 102. Terminal; 103. Fire sensor; 2. Fire extinguishing mechanism; 201. Electric pole; 202. Spray plate seat; 203. Three-way pipe; 204. Fire extinguisher; 205. First solenoid valve pipe; 206. First pressure gauge; 3. Automatic pressure relief mechanism; 301. Storage box; 302. Second solenoid valve pipe; 303. Water pump; 304. Third solenoid valve pipe; 4. Transformer cooling body; 401. Second pressure gauge; 5. Pressure cabin; 501. Transformer body; 6. Support foot; 601. Contact plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] The utility model provides two technical solutions:

[0025] Figure 1 , Figure 2 , Figure 3 , Figure 4 The first embodiment is shown: an explosion-proof and fire-proof pressure relief device for a power transformer, comprising a box body 1, a fire extinguishing mechanism 2 for handling fire is fixedly installed on the outside of the box body 1, a pressure cabin 5 is fixedly installed on one side of the box body 1, and an automatic pressure relief mechanism 3 for relieving pressure on the transformer is fixedly installed on one side of the pressure cabin 5;

[0026] The fire extinguishing mechanism 2 includes an electric rod 201, a spray plate seat 202 for handling fire is fixedly installed at the output end of the electric rod 201, a three-way pipe 203 is fixedly installed on the outside of the spray plate seat 202, a fire extinguisher 204 is fixedly installed at the bottom of the box 1, and a first electromagnetic valve pipe 205 is fixedly installed at one end of the fire extinguisher 204;

[0027] The automatic pressure relief mechanism 3 comprises a storage box 301, a second electromagnetic valve tube 302 for automatically relieving the pressure of the pressure chamber 5 is fixed on one side of the top of the storage box 301, a wiring row 101 is fixedly installed on the top of the box body 1, wiring terminals 102 are fixedly installed at equal intervals on the top of the box body 1, and a fire sensor 103 is fixedly installed on the inner side of the wiring terminal 102;

[0028] A pipe fitting is fixedly installed on one side of the first solenoid valve tube 205, and one end of the pipe fitting is fixed to the first pressure gauge 206, multiple groups of transformer bodies 501 are equidistantly installed inside the pressure chamber 5, a transformer cooling body 4 is fixedly installed on one side of the top of the box body 1, and a second pressure gauge 401 is fixedly installed on one side of the transformer cooling body 4.

[0029] After the device is installed at the designated installation position, the internal pressure of the fire extinguisher 204 can be monitored in real time through the first pressure gauge 206, so that the operator can perform pressure replenishment operations on the fire extinguisher 204. When the load of the wiring row 101 is too large and a fire occurs, the electric rod 201 is powered on to drive the two sets of spray disc seats 202 to move vertically, so that the spray disc seats 202 can safely enclose the top of the box body 1;

[0030] Then, the first solenoid valve tube 205 is powered on to transport the high-pressure gas and dry powder in the fire extinguisher 204 to the top of the box 1 for fire extinguishing. At the same time, the spray disc seat 202 can be used to shield the sparks generated by the electrical explosion of the device, thereby realizing the automatic fire extinguishing and explosion-proof functions of the device.

[0031] The transformer cooling body 4 can be used to cool the transformer oil, and the second pressure gauge 401 can be powered on to control the second solenoid valve tube 302 to automatically release pressure according to the internal pressure state of the pressure chamber 5.

[0032] Figure 1 , Figure 2 , Figure 4 A second embodiment is shown, the main difference from the first embodiment is that: support feet 6 are fixedly installed on both sides of the bottom of the box body 1, and a resistance plate 601 is fixedly installed on the bottom of the support feet 6; a water pump 303 is fixedly installed on the other side of the top of the storage box 301, and a third solenoid valve tube 304 connected to one side of the pressure chamber 5 is fixedly installed on one side of the water pump 303.

[0033] The supporting feet 6 can provide support for the device, ensuring the stability of the device, and the contact area between the device and the ground can be increased by the contact plate 601;

[0034] The transformer oil inside the pressure cabin 5 is monitored in real time through the second pressure gauge 401. When it is detected that the transformer oil inside the pressure cabin 5 exceeds the preset pressure value, the second solenoid valve tube 302 is controlled by the wire to release the transformer oil inside the pressure cabin 5 to the specified pressure value, and then the pressure gas inside the storage box 301 can be released through the slots and mesh plates on the top of the storage box 301. On the contrary, when the second pressure gauge 401 detects that the pressure value inside the pressure cabin 5 is less than the preset value, the water pump 303 and the third solenoid valve tube 304 are powered on to transport the transformer oil to the inside of the pressure cabin 5, so that the transformer oil inside the pressure cabin 5 is at a normal pressure value, thereby realizing the function of intelligent pressure relief.

[0035] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof and fire-proof pressure relief device for a power transformer, comprising a box (1), characterized in that: A fire extinguishing mechanism (2) for handling fire is fixedly installed on the outside of the box (1), a pressure chamber (5) is fixedly installed on one side of the box (1), and an automatic pressure relief mechanism (3) for relieving pressure on the transformer is fixedly installed on one side of the pressure chamber (5); The fire extinguishing mechanism (2) comprises an electric rod (201), a spray disc seat (202) for handling fire is fixedly mounted on the output end of the electric rod (201), a three-way pipe (203) is fixedly mounted on the outside of the spray disc seat (202), a fire extinguisher (204) is fixedly mounted on the bottom of the box (1), and a first electromagnetic valve pipe (205) is fixedly mounted on one end of the fire extinguisher (204); The automatic pressure relief mechanism (3) comprises a storage box (301), and a second electromagnetic valve tube (302) for automatically relieving pressure in a pressure chamber (5) is fixed on one side of the top of the storage box (301).

2. The explosion-proof and fire-proof pressure relief device for power transformer according to claim 1, characterized in that: A wiring row (101) is fixedly installed on the top of the box (1), wiring terminals (102) are fixedly installed at equal intervals on the top of the box (1), and a fire sensor (103) is fixedly installed on the inner side of the wiring terminal (102).

3. The explosion-proof and fire-proof pressure relief device for power transformer according to claim 1, characterized in that: A pipe fitting is fixedly mounted on one side of the first solenoid valve tube (205), and one end of the pipe fitting is fixed to the first pressure gauge (206).

4. The explosion-proof and fire-proof pressure relief device for power transformer according to claim 1, characterized in that: A water pump (303) is fixedly mounted on the other side of the top of the storage box (301), and a third solenoid valve tube (304) which is in communication with one side of the pressure chamber (5) is fixedly mounted on one side of the water pump (303).

5. The explosion-proof and fire-proof pressure relief device for power transformer according to claim 1, characterized in that: A plurality of transformer bodies (501) are equidistantly installed inside the pressure chamber (5), a transformer cooling body (4) is fixedly installed on one side of the top of the box body (1), and a second pressure gauge (401) is fixedly installed on one side of the transformer cooling body (4).

6. The explosion-proof and fire-proof pressure relief device for power transformer according to claim 1, characterized in that: Support legs (6) are fixedly mounted on both sides of the bottom of the box body (1), and a resistance plate (601) is fixedly mounted on the bottom of the support legs (6).

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