Transformer switch cabinet with good sealing effect
Through the combination of double protection structure and vermiculite material, the problem of poor sealing of traditional switch cabinets is solved, and higher sealing performance and fire prevention and control effects are achieved, ensuring safe and efficient cooling of the transformer.
Patent Information
- Application Number
- CN202411376185.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-01-10
AI Technical Summary
Traditional switch cabinets have poor sealing effects, resulting in easy entry of external dust, flying insects and moisture, increasing the risk of transformer damage and fire.
A double-protected transformer switch cabinet was designed. Through the separation structure of the first cabinet and the second cabinet, combined with vermiculite material and rubber sealing plate, the better sealing effect is achieved, and vermiculite expansion is used in the event of a fire. Push the sealing plate sealing opening to isolate the oxygen to extinguish the flame.
It significantly improves the sealing performance of the switch cabinet, prevents external gas and dust from entering, ensures the safety of the transformer, and achieves a complete sealing and fireproof effect when a fire occurs.
Smart Images
Figure CN119297791A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of switch cabinets, and in particular to a transformer switch cabinet with good sealing effect. Background Art
[0002] Transformers are basic equipment for power transmission and distribution, and are widely used in industries, agriculture, transportation, urban communities and other fields. There are about 17 million transformers in operation in my country, with a total capacity of about 11 billion kilovolt-amperes. Transformer losses account for about 40% of power transmission and distribution losses, and have great energy-saving potential. Common transformers are mainly composed of windings, cores, high and low voltage supporting equipment, and protective casings. In order to avoid damage to windings, cores, high and low voltage supporting equipment and other components, they are generally installed in switch cabinets to prevent dust and rain from entering the main part of the transformer.
[0003] However, the sealing effect of traditional switch cabinets is poor, and external dust, flying insects and moisture can easily enter the switch cabinet, causing damage to the transformer in the switch cabinet. In addition, if the transformer short-circuits and catches fire due to line damage or high temperature, if the sealing performance of the switch cabinet is poor, it is easy for external air to enter the switch cabinet, thereby increasing the fire. Therefore, it is urgent to provide a transformer switch cabinet with good sealing effect.
[0004] In view of this, the applicant conducted in-depth research on the above issues, which led to the present case. Summary of the invention
[0005] The main purpose of the present invention is to provide a transformer switch cabinet with good sealing effect, which can have better sealing performance and prevent external flying insects, dust and moisture from entering the interior of the switch cabinet.
[0006] In order to achieve the above object, the solution of the present invention is:
[0007] A transformer switch cabinet with good sealing effect comprises a base and a first cabinet body and a second cabinet body arranged on the base, the first cabinet body is arranged inside the second cabinet body, an air inlet chamber and an air outlet chamber are provided between the first cabinet body and the second cabinet body, the air inlet chamber and the air outlet chamber are separated and arranged up and down, an air inlet hole and an air outlet hole are provided on the rear side wall of the first cabinet body, the air inlet chamber is connected with the interior of the first cabinet body through the air inlet hole, and the air outlet chamber is connected with the interior of the first cabinet body through the air outlet hole, a heat dissipation cabinet is provided on the side of the second cabinet body, the heat dissipation cabinet has two installation chambers separated and arranged up and down, ventilation holes are provided on the side walls of the installation chamber, the two installation chambers are respectively connected with the air inlet chamber and the air outlet chamber, an air supply fan is installed in the upper installation chamber, and an exhaust fan is installed in the lower installation chamber.
[0008] Furthermore, the front side wall of the first cabinet is provided with an opening, and the front side wall is provided with accommodating cavities on both sides of the opening, and a slidably connected closing plate is provided in the accommodating cavity, and the accommodating cavity is filled with vermiculite material.
[0009] Furthermore, the front side wall and the rear side wall of the closing plate are provided with rubber sheet layers.
[0010] Furthermore, a rubber sleeve is provided on the end of the closing plate.
[0011] Furthermore, a positioning rod is provided at the upper end of the closing plate, a clearance hole for the positioning rod to pass through is provided on the upper surface of the first cabinet, a strip groove is provided at the lower end of the closing plate, and a guide convex strip embedded in the strip groove is provided on the lower surface of the accommodating cavity.
[0012] Furthermore, a rotatably connected rotating wheel is provided at the upper end of the first cabinet, a baffle is provided inside the first cabinet, a circular ring is provided at the upper end of the baffle, the circular ring is connected to the positioning rod through a steel rope, and the middle part of the steel rope is wound around the rotating wheel.
[0013] Furthermore, a limiting boss is provided on the inner side wall at the rear end of the first cabinet.
[0014] Furthermore, the first cabinet is provided with limiting grooves on the upper side wall and the lower side wall of the opening, the limiting grooves are provided with limiting pins which are slidably connected, and a supporting spring is provided between the limiting pin and the limiting groove.
[0015] Compared with the prior art, the beneficial effect of the present invention is that the first cabinet and the second cabinet have a double protection effect, and the external gas can only enter the second cabinet through the ventilation hole, the air inlet hole and the installation cavity, and then enter the first cabinet through the air inlet hole, so that the sealing effect inside the first cabinet is better. And when the transformer inside the first cabinet short-circuit burns, the vermiculite expands rapidly after being exposed to high temperature, pushing the closing plates to fit each other to close the opening, and at the same time the baffle slides down to the limiting boss and is fixed, thereby sealing the air inlet and outlet holes. In this way, the interior of the first cabinet is in a completely sealed state, isolating the interior of the first cabinet from oxygen, and achieving the effect of extinguishing the flame. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a three-dimensional diagram of the appearance structure of the present invention.
[0017] Figure 2 It is a schematic diagram of the internal structure of the present invention.
[0018] Figure 3 Another schematic diagram of the internal structure of the present invention.
[0019] Figure 4 It is a top view of the cross-sectional structure of the present invention.
[0020] Figure 5 It is a side view of the cross-sectional structure of the present invention.
[0021] Figure 6 It is a schematic diagram of the matching structure of the strip groove and the guide convex strip.
[0022] Figure 7 It is a schematic diagram of the structural cross-section of the limit pin.
[0023] Figure 8 It is another cross-sectional structural side view of the present invention.
[0024] Fig. 9 It is a structural schematic diagram of the translation drive mechanism in the present invention.
[0025] In the figure: base 11, first cabinet 12, air inlet chamber 121, air outlet chamber 122, opening 123, accommodating chamber 124, make way hole 125, guide convex strip 126, limiting boss 127, limiting groove 128, second cabinet 13, air inlet hole 141, air outlet hole 142, heat dissipation cabinet 15, installation chamber 151, installation chamber 151, air supply fan 152, ventilation hole 153, exhaust fan 154, closing plate 2, rubber strip sleeve 21, positioning rod 22, strip groove 23, rotating wheel 31, baffle 32, ring 321, steel rope 33, limiting pin 34, top spring 35, sound absorbing device 4, translation frame 41, liquid storage tank 42, connecting rod 43, sound absorbing cover 44, driving motor 51, screw rod 52, connecting seat 53, guide slide groove 54, guide slide block 55. DETAILED DESCRIPTION
[0026] In order to further explain the technical solution of the present invention, the present invention is described in detail below through specific embodiments.
[0027] like Figure 1-9As shown, a transformer switch cabinet with good sealing effect includes a base 11 and a first cabinet body 12 and a second cabinet body 13 arranged on the base 11. The interior of the base 11 is sealed and connected to the first cabinet body 12. A rotatably connected cabinet door is arranged in front of the second cabinet body 13. When the cabinet door is closed, it can be sealed and connected to the second cabinet body 13 through a rubber strip, so as to achieve sealing of the interior of the second cabinet. The first cabinet body 12 is arranged inside the second cabinet body 13, and the transformer body is installed in the first cabinet body 12. An air inlet cavity 121 and an air outlet cavity 122 are formed between the first cabinet body 12 and the second cabinet body 13, and an air inlet hole 141 and an air outlet hole 142 are arranged on the rear side wall of the first cabinet body 12. The air inlet cavity 121 is connected to the interior of the first cabinet body 12 through the air inlet hole 141, and the air outlet cavity 122 is connected to the interior of the first cabinet body 12 through the air outlet hole 142. The side wall of the second cabinet body 13 is provided with an air inlet hole 141, and the air inlet cavity 121 is connected to the interior of the first cabinet body 12 through the air inlet hole 141. The air outlet cavity 122 is connected to the interior of the first cabinet body 12 through the air outlet hole 142. A heat dissipation cabinet 15 is provided on the side, and the heat dissipation cabinet 15 has two installation chambers 151 separated from each other in the upper and lower parts, and a ventilation hole 153 is provided on the side wall of the installation chamber 151. The two installation chambers 151 are respectively connected with the air inlet chamber 121 and the air outlet chamber 122. An air supply fan 152 is installed in the installation chamber 151 at the upper end, and an exhaust fan 154 is installed in the installation chamber 151 at the lower end. The air supply fan 152 and the exhaust fan 154 are conventional exhaust ventilation equipment on the market, and no further elaboration is made here. The air supply fan 152 can transport the low-temperature air outside into the air inlet chamber 121, and then transport it to the transformer body at a fixed point through the air inlet hole 141. Since the low-temperature air is easy to sink after entering, the air quickly exchanges heat with the transformer body and flows downward. The exhaust fan 154 can generate suction force, and the air after heat exchange at the bottom of the first cabinet 12 is quickly sucked into the air outlet chamber 122 through the air outlet hole 142, and then discharged from the ventilation hole. In this way, a fast air circulation channel is formed inside the second cabinet 13 and the first cabinet 12, which can accelerate the circulation of heat exchange gas, thereby improving the cooling effect on the transformer body. In addition, the external gas needs to pass through the ventilation hole and the air inlet hole 141 in sequence before entering the first cabinet 12. At the same time, the air inlet cavity 121 is provided with a corner, so that external moisture and dust are not easy to enter the first cabinet 12, thereby improving the sealing performance of the present invention.
[0028] In this embodiment, the front side wall of the first cabinet 12 is provided with an opening 123, and the front side wall is provided with a receiving cavity 124 on both sides of the opening 123, and a slidingly connected closing plate 2 is provided in the receiving cavity 124, and the receiving cavity 124 is filled with vermiculite material. The front side wall and the rear side wall of the closing plate 2 are provided with a rubber sheet layer, and the rubber sheet layer can play a sealing effect between the sealing plate and the side wall of the receiving cavity 124. The end of the closing plate 2 is sleeved with a rubber strip 21, and when the closing plate 2 is closed, the rubber strips 21 on both sides fit each other to play a sealing effect.
[0029] In this embodiment, a positioning rod 22 is provided at the upper end of the closing plate 2, a clearance hole 125 is provided on the upper surface of the first cabinet 12 for the positioning rod 22 to pass through, a strip groove 23 is provided at the lower end of the closing plate 2, and a guide convex strip 126 is provided on the lower surface of the accommodating cavity 124 to fit in the strip groove 23. After adopting the above structure, the positioning rod 22 and the clearance groove are slidably matched, and the strip groove 23 and the guide convex strip 126 are slidably matched, which plays a guiding effect on the closing plate 2, making the closing plate 2 slide more smoothly. In addition, a rotating wheel 31 is provided at the upper end of the first cabinet 12, and a baffle 32 is provided inside the first cabinet 12 for sealing and sliding connection. A ring 321 is provided at the upper end of the baffle 32, and the ring 321 is connected to the positioning rod 22 by a steel rope 33, and the middle part of the steel rope 33 is wound around the rotating wheel 31. A limiting boss 127 is provided on the inner side wall of the rear end of the first cabinet 12. The first cabinet 12 is provided with a limit groove 128 on the upper side wall and the lower side wall of the opening 123, and a limit pin 34 is provided in the limit groove 128 for sliding connection, and a push spring 35 is provided between the limit pin 34 and the limit groove 128. After adopting the above structure, during normal operation, the limit pin 34 can push against the closing plate 2 to position the closing plate 2 in the accommodating cavity 124. And the closing plate 2 lifts the baffle 32 upwards through the steel rope 33, so that the baffle 32 cannot cover the air inlet 141 and the air outlet 142. When the transformer catches fire, the vermiculite expands due to heat and pushes the closing plate 2 outward to fit, thereby sealing the opening 123. As the closing plates 2 fit together, the steel rope 33 is loosened, and the baffle plate 32 is placed downward and fixed on the limiting boss 127. A rubber pad can also be provided on the inner side of the baffle plate 32. The air inlet 141 and the air outlet 142 are closed by the baffle plate 32, so that the interior of the first cabinet 12 is in a completely sealed state.
[0030] Compared with the prior art, the beneficial effect is that the present invention has a double protection effect through the first cabinet 12 and the second cabinet 13, and the external gas can only enter the second cabinet 13 through the ventilation hole 153 and the air inlet cavity 121, and then enter the first cabinet 12 through the air inlet hole 141, so that the sealing effect inside the first cabinet 12 is better. And when the transformer inside the first cabinet 12 is short-circuited and burned, the vermiculite expands rapidly after being subjected to high temperature and pushes the closing plate 2 to fit each other to close the opening 123, and at the same time, the baffle 32 slides down to the limiting boss 127 and is fixed, thereby sealing the air inlet hole 141 and the air outlet hole 142. In this way, the interior of the first cabinet 12 is in a completely sealed state, so that the interior of the first cabinet 12 is isolated from oxygen, which has the effect of extinguishing the flame, and vermiculite is an efficient high-temperature resistant fireproof material, which can further enhance the fireproof effect of the present invention.
[0031] More preferably, since the transformer body vibrates during operation, a large amount of noise is easily generated, affecting the working environment. In order to reduce the noise generated when the switch cabinet of the present invention is used, the present invention also includes a sound absorbing device 4, which includes a translation drive mechanism, a translation frame 41, a liquid storage tank 42, a connecting rod 43 and a sound absorbing cover 44. The translation drive mechanism is installed in the base 11, and the base 11 is only connected to the inside of the switch cabinet to improve the sealing performance. The power output end of the translation drive mechanism is connected to the translation frame 41, and the upper end of the translation frame 41 extends into the first cabinet 12. The liquid storage tank 42 is installed on the translation frame 41. The liquid storage tank 42 is filled with water. A water inlet pipe and a water outlet pipe can be set on the liquid storage tank 42 to facilitate filling and discharging of water. One end of the connecting rod 43 penetrates into the liquid storage tank 42 for sealing connection, and the other end of the connecting rod 43 is connected to the sound absorbing cover 44. The side of the sound absorbing cover 44 close to the transformer body is provided with a sound absorbing port, and the inner wall of the sound absorbing cover 44 is provided with a sound absorbing layer, and the sound absorbing layer can be made of sound absorbing materials such as sound absorbing cotton. After adopting the above structure, the translation drive mechanism can drive the liquid storage tank 42 to translate close to or away from the transformer body, so that it can be applied to transformer bodies of various models and sizes. The sound absorbing cover 44 can be symmetrically covered on both sides of the transformer body. When the transformer body makes a loud noise, the sound absorbing layer can absorb the noise. In addition, the noise can be absorbed by the sound absorbing cover 44, and then transmitted to the liquid storage tank 42 through the connecting rod 43. The vibration generated by the noise is gradually reduced by the liquid, further improving the sound absorption effect. In this embodiment, the translation drive mechanism includes a driving motor 51, a screw rod 52 and a connecting seat 53. The driving motor 51 is installed in the middle of the base 11, and the connecting seat 53 is installed on both sides of the base 11. One end of the screw rod 52 is connected to the output shaft of the driving motor 51, and the other end of the screw rod 52 is rotatably connected to the connecting seat 53. The lower end of the translation frame 41 is threadedly connected to the screw rod 52. The driving motor 51 is a bidirectional motor, which can drive the screw rods 52 on both sides to rotate together, thereby driving the translation frame 41 and the liquid storage tank to move synchronously. A guide slide groove 54 is provided at the bottom of the base 11, and a guide slider 55 protruding downward is provided at the lower end of the translation frame 41. The guide slider 55 is embedded in the guide slide groove 54 and slidably connected. This makes the translation frame 41 move more smoothly.
[0032] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present invention.
Claims
1. A transformer switch cabinet with good sealing effect, characterized in that: The utility model comprises a base and a first cabinet body and a second cabinet body arranged on the base, the first cabinet body is arranged inside the second cabinet body, an air inlet chamber and an air outlet chamber are provided between the first cabinet body and the second cabinet body, the air inlet chamber and the air outlet chamber are separated from each other up and down, an air inlet hole and an air outlet hole are provided on the rear side wall of the first cabinet body, the air inlet chamber is connected with the interior of the first cabinet body through the air inlet hole, and the air outlet chamber is connected with the interior of the first cabinet body through the air outlet hole, a heat dissipation cabinet is provided on the side of the second cabinet body, the heat dissipation cabinet has two installation chambers separated from each other up and down, ventilation holes are provided on the side walls of the installation chamber, the two installation chambers are respectively connected with the air inlet chamber and the air outlet chamber, an air supply fan is installed in the upper installation chamber, and an exhaust fan is installed in the lower installation chamber.
2. A transformer switch cabinet with good sealing effect as claimed in claim 1, characterized in that: The front side wall of the first cabinet is provided with an opening, and the front side wall is provided with accommodating cavities on both sides of the opening. A slidingly connected closing plate is provided in the accommodating cavity, and the accommodating cavity is filled with vermiculite material.
3. A transformer switch cabinet with good sealing effect as claimed in claim 2, characterized in that: The front side wall and the rear side wall of the closing plate are provided with rubber sheet layers.
4. A transformer switch cabinet with good sealing effect as claimed in claim 2, characterized in that: The end of the closing plate is sleeved with a rubber strip sleeve.
5. A transformer switch cabinet with good sealing effect as claimed in claim 2, characterized in that: A positioning rod is arranged at the upper end of the closing plate, a clearance hole for the positioning rod to pass through is arranged on the upper surface of the first cabinet, a strip groove is arranged at the lower end of the closing plate, and a guide convex strip embedded in the strip groove is arranged on the lower surface of the accommodating cavity.
6. A transformer switch cabinet with good sealing effect as claimed in claim 5, characterized in that: A rotatably connected rotating wheel is arranged at the upper end of the first cabinet, a baffle is arranged inside the first cabinet, a circular ring is arranged at the upper end of the baffle, the circular ring is connected with the positioning rod through a steel rope, and the middle part of the steel rope is wound around the rotating wheel.
7. A transformer switch cabinet with good sealing effect as claimed in claim 6, characterized in that: A limiting boss is arranged on the inner side wall of the rear end of the first cabinet.
8. A transformer switch cabinet with good sealing effect as claimed in claim 2, characterized in that: The first cabinet is provided with limiting grooves on the upper side wall and the lower side wall of the opening, the limiting grooves are provided with limiting pins which are slidably connected, and a resisting spring is provided between the limiting pin and the limiting groove.