High-safety transformer substation transformer

Abstract

The high-safety transformer substation transformer comprises a transformer body, an air inlet channel is installed on the inner wall of one side of the transformer body in a penetrating mode, a sealing cylinder is fixedly installed in the air inlet channel in a sealed mode, and a draught fan is installed at the tail end of the air inlet channel; a wall-attached heat dissipation frame is installed on the inner wall of the other side of the transformer body, an air outlet channel is installed on the inner wall of the other side of the transformer body in a penetrating mode, a water absorption sponge plate is placed on the inner wall of the wall-attached heat dissipation frame, a liquid guide strip is connected to the tail end of the water absorption sponge plate, and a transfer unit is installed in the air outlet channel and comprises a first blocking plate and a second blocking plate. By means of the sealing cylinder and the external heat dissipation frame, external heat dissipation of the transformer body can be achieved while air cooling heat dissipation is conducted on the transformer body, conversion and reutilization of moisture permeating into the transformer body can be achieved in combination with the air outlet channel and the wall-attached heat dissipation frame, and the heat dissipation efficiency of the interior of the transformer body is further improved while the moisture is prevented.

Description

Technical Field

[0001] The invention relates to a high-safety transformer substation transformer, in particular to a high-safety transformer substation transformer applied in the transformer field. Background Art

[0002] The power transformer is the basic part of the power system that provides energy consumption, and is also an important induction device to ensure the safe operation of electricity. Its composition structure consists of a primary coil, a secondary coil and an iron core. It uses the principle of electromagnetic induction to change the AC voltage. After a long period of technical transformation, the reliability and stability of the entire power supply have been continuously improved, but there are still various outstanding hidden dangers. During the operation of some transformer devices, due to the need for heat dissipation, heat dissipation holes are usually designed. This will introduce moisture into the interior of the transformer during the heat dissipation process, resulting in an increased possibility of a short circuit in the transformer circuit, affecting the safety of the transformer.

[0003] The specification of Chinese invention patent CN202110586275.8 discloses a moisture-proof transformer, in which a vibration mechanism is arranged. When the airflow enters the inside of the vibration ball in the vibration mechanism, the airflow will continuously blow air to the elastic ball under the action of the wind gathering plate. When the elastic ball is blown by the continuous airflow, the elastic ball will move. During the movement of the elastic ball, it will continuously hit the vibration ball to make the vibration ball move up and down, thereby cooperating with the vibration auxiliary rod to achieve the purpose of water droplets. In addition, Chinese invention patent CN202310115810.0 discloses a transformer protection device, which uses water as power to synchronously drive each baffle to rotate and close the box body and the dehumidification component to operate, so that the complexity of the structure is not increased while meeting the structural function requirements, which not only improves the coordination between the structures, but also reduces the manufacturing cost and the operating cost.

[0004] However, in actual operation, in order to ensure stable heat dissipation, the above heat dissipation and moisture-proof design needs to dehumidify the air entering during heat dissipation. However, the components after moisture absorption still remain in the transformer. The moisture is easily affected by the high temperature in the transformer and then evaporates into the transformer again, resulting in defects in the moisture-proof work in the transformer. In addition, external moisture will inevitably penetrate the transformer during operation. Even if the entry of external moisture can be avoided during air cooling, it is impossible to prevent the threat of penetrated moisture to the internal circuit of the transformer. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is how to stably realize moisture-proof and heat dissipation inside the transformer while taking into account the secondary utilization of moisture inside the transformer to prevent it from becoming a cause of short circuit in the transformer.

[0006] In order to solve the above problems, the present invention provides a high-safety transformer substation transformer, including a transformer body, an air inlet channel is installed through the inner wall of one side of the transformer body, a sealing cylinder filled with coolant is fixedly and sealedly installed inside the air inlet channel, a fan is installed at the tail end of the air inlet channel, a wall-attached heat dissipation frame made of heat-conductive material is installed on the inner wall of the other side of the transformer body, a plurality of air outlet channels located below the wall-attached heat dissipation frame are installed through the inner wall of the other side of the transformer body, a water-absorbing sponge board is placed on the inner wall of the wall-attached heat dissipation frame, and a liquid guide strip extending through and extending to the inside of the air outlet channel is connected to the tail end of the water-absorbing sponge board, and the liquid guide strip is made of a water-absorbing cotton core;

[0007] A transfer unit is installed inside the air outlet channel, and the transfer unit includes a No. 1 plugging plate and a No. 2 plugging plate, the diameter of which is the same as the inner diameter of the air outlet channel, and the sealing cylinder and the No. 2 plugging plate are both made of waterproof and breathable materials, and the No. 1 plugging plate and the No. 2 plugging plate are fixedly connected to the inner wall of the air outlet channel, and a one-way ventilation pipe is opened inside the No. 1 plugging plate;

[0008] A liquid outlet pipe corresponding to the air outlet channel is installed through the surface of the wall-attached heat dissipation frame on one side away from the fan, and a one-way valve is installed inside the liquid outlet pipe and the air outlet channel.

[0009] In the above-mentioned high-safety substation transformer, the use of a sealing tube and an external heat dissipation frame can realize external heat dissipation of the transformer body while the transformer body is cooled by air. In addition, combined with the air outlet channel and the wall-mounted heat dissipation frame, the transformation and reuse of moisture that penetrates the transformer body can be realized, thereby preventing moisture and further improving the internal heat dissipation efficiency of the transformer body.

[0010] As a further improvement of the present application, the outer wall surface of the transformer body having the air inlet channel is provided with two external heat dissipation frames symmetrically arranged about the air inlet channel, and the external heat dissipation frames are connected to the lowest position of the inner wall of the air inlet channel through a connecting pipe.

[0011] As a further improvement of the present application, a filter plate is installed inside the air inlet channel, the filter plate is located on the side of the sealing tube away from the fan, and the tail end of the connecting pipe is located between the filter plate and the sealing tube.

[0012] As a further improvement of the present application, a deformation warning ring is connected in the middle of the liquid outlet pipe, and a deformation ring is connected to the inner wall of the deformation warning ring. The deformation ring is supported by a water-swellable material, and the deformation ring is located above the one-way valve in the liquid outlet pipe.

[0013] As a further improvement of the present application, the initial inner diameter of the deformation warning ring is the same as the inner diameter of the liquid outlet pipe, and the deformation warning ring is made of elastic waterproof material.

[0014] As a further improvement of the present application, an electromagnetic sheet is embedded in the top wall of the wall-mounted heat dissipation frame, and a plurality of tension springs are connected to the bottom of the electromagnetic sheet, and the tail end of the tension spring is connected to a magnetic strip that repel each other with the electromagnetic sheet.

[0015] As another improvement of the present application, a flip rod is installed through the interior of the No. 2 blocking plate, and the end of the flip rod is connected to the inner wall of the air outlet channel through a damping reset shaft, and a guide pipe extending to the interior of the wall-attached heat dissipation frame is installed through the interior of the air outlet channel, and the guide pipe is located on the outside of the liquid guide strip.

[0016] As a further improvement of the present application, an elastic tube is installed through the interior of each No. 1 blocking plate, and the elastic tube is located inside the transformer body and fits with the inner bottom wall of the transformer body, and the elastic tube is made of wear-resistant and heat-conductive material.

[0017] In summary, the present invention can perform dry-wet separation and temperature reduction treatment on the incoming airflow during the air intake process of air-cooled heat exchange of the transformer body, and while enhancing the heat exchange effect, the separated moisture can also be drained to the external heat dissipation frame to achieve moisture reuse. At the same time, during the air outlet process of air-cooled heat exchange, the moisture infiltrated into the transformer body is secondary converted and reused, which can not only prevent moisture from causing short-circuit damage to the internal circuit of the transformer body, but also cooperate with air-cooled heat exchange to achieve water-cooled combined heat dissipation, improve the internal heat dissipation efficiency, and monitor the moisture penetration inside the transformer body, so as to realize remote centralized management of the transformer body. In addition, it can cooperate with the external heat dissipation frame to realize the combined internal and external heat dissipation of the transformer body, and comprehensively improve the heat dissipation efficiency and safety of the transformer body and its safety management operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall appearance structure of the first embodiment of the present application;

[0019] Figure 2 This is a schematic diagram of the internal structure of the transformer body according to the first embodiment of the present application;

[0020] Figure 3 This is the first implementation method of this application Figure 2 A is an enlarged schematic diagram;

[0021] Figure 4 This is a schematic diagram of the internal structure of the wall-mounted heat dissipation frame according to the first embodiment of the present application;

[0022] Figure 5 This is the first implementation method of this application Figure 4 The enlarged schematic diagram of point B in FIG.

[0023] Figure 6 This is a schematic diagram of the drainage state of the water-absorbing sponge board in the first embodiment of the present application;

[0024] Figure 7 This is a schematic diagram of the internal structure of the liquid outlet pipe according to the first embodiment of the present application;

[0025] Figure 8 This is a diagram showing the state of the deformation warning ring expanding and protruding according to the first embodiment of the present application;

[0026] Fig. 9 This is a schematic diagram of the second blocking plate and the flip rod structure of the second implementation mode of the present application;

[0027] Fig.10 This is a diagram showing the drainage state of the second blocking plate flipping in the second implementation mode of the present application;

[0028] Fig.11 This is a schematic diagram of the installation of the elastic tube according to the third embodiment of the present application;

[0029] Fig.12 This is a schematic diagram of the water storage state of the elastic tube in the third embodiment of the present application.

[0030] Description of the numbers in the figure:

[0031] 1. Transformer body; 2. External heat dissipation frame; 3. Air inlet channel; 31. Filter plate; 32. Fan; 4. Sealing tube; 5. Air outlet channel; 51. No. 1 plugging plate; 52. No. 2 plugging plate; 6. Wall heat dissipation frame; 61. Water-absorbing sponge plate; 62. Magnetic strip; 63. Tension spring; 64. Liquid outlet pipe; 65. Liquid guide strip; 651. Transfer pipe; 641. Deformation warning ring; 642. Deformation ring; 7. One-way valve; 8. Elastic tube. DETAILED DESCRIPTION

[0032] The following is a detailed description of three implementation methods of the present application in conjunction with the accompanying drawings.

[0033] The first implementation method:

[0034] Figure 1-8 A high-security transformer substation transformer is shown, comprising a transformer body 1, an air inlet channel 3 is installed through the inner wall of one side of the transformer body 1, a sealing cylinder 4 filled with coolant is fixedly and sealedly installed inside the air inlet channel 3, a fan 32 is installed at the tail end of the air inlet channel 3, a wall-attached heat dissipation frame 6 made of heat-conducting material is installed on the inner wall of the other side of the transformer body 1, a plurality of air outlet channels 5 located below the wall-attached heat dissipation frame 6 are installed through the inner wall of the other side of the transformer body 1, a water-absorbing sponge board 61 is placed on the inner wall of the wall-attached heat dissipation frame 6, and a liquid guide strip 65 extending through and extending to the inside of the air outlet channel 5 is connected to the tail end of the water-absorbing sponge board 61, and the liquid guide strip 65 is made of a water-absorbing cotton core;

[0035] A transfer unit is installed inside the air outlet channel 5, and the transfer unit includes a first plugging plate 51 and a second plugging plate 52, the diameter of which is the same as the inner diameter of the air outlet channel 5, and the sealing cylinder 4 and the second plugging plate 52 are both made of waterproof and breathable materials, and the first plugging plate 51 and the second plugging plate 52 are fixedly connected to the inner wall of the air outlet channel 5, and a one-way ventilation pipe is opened inside the first plugging plate 51;

[0036] A liquid outlet pipe 64 corresponding to the air outlet channel 5 is installed through the surface of the wall-attached heat dissipation frame 6 on one side facing away from the fan 32 , and a one-way valve 7 is installed inside the liquid outlet pipe 64 and the air outlet channel 5 .

[0037] The outer wall surface of the transformer body 1 on which the air inlet channel 3 is installed has two external heat dissipation frames 2 symmetrically arranged about the air inlet channel 3, and the external heat dissipation frames 2 are connected to the lowest position of the inner wall of the air inlet channel 3 through a connecting pipe.

[0038] A filter plate 31 is installed inside the air inlet channel 3 . The filter plate 31 is located on the side of the sealing tube 4 away from the fan 32 , and the tail end of the connecting pipe is located between the filter plate 31 and the sealing tube 4 .

[0039] Specifically, when providing moisture-proof heat dissipation treatment for the transformer body 1, the fan 32 is started to drive the air outside the transformer body 1 into the air inlet channel 3, and firstly passes through the filter plate 31 to intercept dust and foreign matter, and then the gas in the airflow passes through the sealing tube 4 and enters the interior of the transformer body 1 after heat exchange treatment, and the water vapor in the airflow is intercepted by the sealing tube 4, and then remains in the interior of the air inlet channel 3 and is transferred to the external heat dissipation frame 2 through the connecting pipe. Since the external heat dissipation frame 2 is attached to the surface of the transformer body 1, the surface can be water-cooled and cooled, and cooperates with the fan 32 to realize the internal and external combined heat dissipation operation of the transformer body 1;

[0040] The gas sucked into the transformer body 1 by the fan 32 is discharged through the air outlet duct 5 after heat exchange treatment, completing the complete heat exchange treatment. If the inside of the transformer body 1 has infiltration phenomenon and moisture exists inside the transformer body 1, in the process of the gas being discharged through the air outlet duct 5 after heat exchange, the water vapor, moisture, etc. contained in the gas are separated and intercepted in the space between the first plugging plate 51 and the second plugging plate 52. The moisture is intercepted in the space formed by the first plugging plate 51 and the second plugging plate 52, and then diffused into the water-absorbing sponge plate 61 inside the wall-attached heat dissipation frame 6 through the liquid guide strip 65, so that the water-absorbing sponge plate 61 is in an infiltrated state and adheres to the inner wall of the transformer body 1 to perform forced heat exchange, thereby realizing the transformation and reuse of moisture inside the transformer body 1 and reducing the possibility of moisture causing short-circuit damage to the internal circuit of the transformer body 1, thereby protecting the safety of the transformer body 1.

[0041] A deformation warning ring 641 is connected in the middle of the liquid outlet pipe 64 , and a deformation ring 642 is connected to the inner wall of the deformation warning ring 641 . The deformation ring 642 is supported by a water-swellable material and is located above the one-way valve 7 in the liquid outlet pipe 64 .

[0042] The initial inner diameter of the deformation warning ring 641 is the same as the inner diameter of the liquid outlet pipe 64 , and the deformation warning ring 641 is made of elastic waterproof material.

[0043] Specifically, when moisture appears inside the transformer body 1, the moisture can be transferred to the water-absorbing sponge plate 61 for conversion and reuse. However, since the wall-attached heat dissipation frame 6 and the liquid outlet pipe 64 are in a through state, the internal moisture can be transferred to the deformation ring 642, causing the deformation ring 642 to expand and deform, driving the deformation warning ring 641 that was originally in contact with the wall of the liquid outlet pipe 64 to expand and bulge synchronously, thereby achieving a corresponding warning effect (since the deformation warning ring 641 is made of waterproof material, it can prevent moisture and rainwater in the external environment of the liquid outlet pipe 64 from causing expansion interference to the deformation ring 642, and at the same time, the one-way valve 7 in the liquid outlet pipe 64 The setting can prevent the entry of moisture outside the liquid outlet pipe 64 from causing expansion interference to the deformable ring 642). To facilitate remote observation, a pressure sensing device can be set inside the deformation warning circle 641 or a monitoring device can be set near the liquid outlet pipe 64. When the deformation warning circle 641 expands, a signal can be sent to the remote command center, indicating that internal penetration has occurred in the transformer body 1 here. The moisture penetration situation can be judged according to the expansion and squeezing effect on the pressure sensing device and the degree of expansion and deformation of the deformation warning circle 641, and the level is marked so that maintenance personnel can go for maintenance according to the degree of urgency of the situation.

[0044] An electromagnetic sheet is embedded and installed on the top wall of the wall-attached heat dissipation frame 6, and a plurality of tension springs 63 are connected to the bottom of the electromagnetic sheet. The tail end of the tension spring 63 is connected to a magnetic strip 62 that repel the electromagnetic sheet.

[0045] Specifically, after the water-absorbing sponge plate 61 is saturated with water, it is difficult to continue to absorb and transform the moisture in the transformer body 1. At this time, the electromagnetic sheet can be started to drive the magnetic strip 62 to move downward, thereby squeezing the water-absorbing sponge plate 61, so that the water-absorbing sponge plate 61 can squeeze out the water inside, and then discharge it in one direction through the liquid outlet pipe 64, so that the continuous water absorption and transformation operation of the water-absorbing sponge plate 61 can be achieved. After that, the magnetic strip 62 and the water-absorbing sponge plate 61 can be reset by the tension spring 63;

[0046] In addition, by combining the starting frequency of the electromagnetic sheet and the deformation degree of the deformation warning circle 641 detected by the pressure sensing device or the monitoring device, the accuracy of the monitoring of the penetration of the transformer body 1 can be further improved. Within a unit of time, if the electromagnetic sheet is started frequently and the deformation degree of the deformation warning circle 641 is large, the penetration inside the transformer body 1 is relatively serious. If only the deformation degree of the deformation warning circle 641 is large but the starting interval of the electromagnetic sheet is long, it indicates that the penetration inside the transformer body 1 is within a controllable range. If the electromagnetic sheet is in an unstarted state and only the deformation data of the deformation warning circle 641 exists, the penetration inside the transformer body 1 is relatively light.

[0047] Second implementation method:

[0048] Figure 9-10 It is shown that a flip rod is installed through the interior of the No. 2 blocking plate 52, and the end of the flip rod is connected to the inner wall of the air outlet channel 5 through a damping reset shaft. A guide pipe 651 extending to the inside of the wall-attached heat dissipation frame 6 is installed through the interior of the air outlet channel 5, and the guide pipe 651 is located on the outside of the liquid guide strip 65.

[0049] Specifically, when the magnetic strip 62 is squeezed downward, the water is transferred to the space formed by the No. 1 plug 51 and the No. 2 plug 52 through the transfer pipe 651. Due to the increase of the water in the space, the No. 2 plug 52 is squeezed, causing the No. 2 plug 52 to deflect slightly. After that, the water in the space can be discharged to the outside of the transformer body 1 through the air outlet channel 5. After the water is discharged, the No. 2 plug 52 is reset under the action of the damping reset shaft, and the interception and separation operation is continued (in order to avoid the wind force from turning over the No. 2 plug 52, a reducer is installed inside the one-way pipe in the No. 1 plug 51 to reduce the speed of the discharged wind).

[0050] Different from the first embodiment, this embodiment does not need to use the liquid outlet pipe 64, the deformable ring 642 and the deformable warning circle 641. The rest is the same as the first embodiment. In order to realize the remote monitoring of the penetration of the transformer body 1, a flow liquid flow monitoring device can be installed inside the air outlet channel 5. By observing the length of the working gap of the liquid flow monitoring device, it can be used as a reference for reflecting the penetration of the transformer body 1.

[0051] The third implementation method:

[0052] Figure 11-12 It is shown that an elastic tube 8 is installed through the interior of each No. 1 blocking plate 51, and the elastic tube 8 is located inside the transformer body 1 and fits with the inner bottom wall of the transformer body 1. The elastic tube 8 is made of wear-resistant and heat-conductive material.

[0053] Specifically, the difference between this embodiment and the first embodiment is that there is no need to use the liquid outlet pipe 64, and the difference from the second embodiment is that there is no need to use a reducer or change the connection method between the second plugging plate 52 and the air outlet channel 5, but the existence of the extradition pipe 651 is retained. The water squeezed by the water-absorbing sponge plate 61 can be transferred to the elastic tube 8 to achieve the transfer and retention of excess water. Combined with the fan 32, the heat dissipation and dehumidification operation inside the transformer body 1 is further strengthened, and its safety is enhanced. For the purpose of monitoring the infiltration situation, a displacement sensor connected to the remote command center cloud can be installed at the tail end of the surface of the elastic tube 8. As the water inside the elastic tube 8 increases, the elastic tube 8 is passively stretched and straightened, and the displacement distance also increases accordingly. When the displacement reaches the maximum stretching value of the elastic tube 8, the surface water storage capacity has reached the limit and needs to be replaced.

[0054] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A high-security transformer for a substation, comprising a transformer body (1), characterized in that: An air inlet channel (3) is installed through the inner wall of one side of the transformer body (1), a sealing cylinder (4) filled with coolant is fixedly and sealedly installed inside the air inlet channel (3), a fan (32) is installed at the tail end of the air inlet channel (3), a wall-attached heat dissipation frame (6) made of heat-conducting material is installed on the inner wall of the other side of the transformer body (1), a plurality of air outlet channels (5) located below the wall-attached heat dissipation frame (6) are installed through the inner wall of the other side of the transformer body (1), a water-absorbing sponge board (61) is placed on the inner wall of the wall-attached heat dissipation frame (6), and the tail end of the water-absorbing sponge board (61) is connected to a liquid guide strip (65) extending through and into the interior of the air outlet channel (5), and the liquid guide strip (65) is made of a water-absorbing cotton core; A transfer unit is installed inside the air outlet channel (5), and the transfer unit includes a first plugging plate (51) and a second plugging plate (52) having the same diameter as the inner diameter of the air outlet channel (5), and the sealing cylinder (4) and the second plugging plate (52) are both made of waterproof and breathable materials, the first plugging plate (51) and the second plugging plate (52) are fixedly connected to the inner wall of the air outlet channel (5), and a one-way ventilation pipe is opened inside the first plugging plate (51); A liquid outlet pipe (64) corresponding to each of the air outlet channels (5) is installed through the surface of the wall-attached heat dissipation frame (6) on one side facing away from the fan (32), and a one-way valve (7) is installed inside the liquid outlet pipe (64) and the air outlet channel (5).

2. A high-security substation transformer according to claim 1, characterized in that: The transformer body (1) is provided with an outer wall surface on which an air inlet channel (3) is provided, and two external heat dissipation frames (2) are symmetrically arranged with respect to the air inlet channel (3), and the external heat dissipation frames (2) are connected to the lowest position of the inner wall of the air inlet channel (3) via a connecting pipe.

3. A high-security substation transformer according to claim 2, characterized in that: A filter plate (31) is installed inside the air inlet channel (3), the filter plate (31) is located on the side of the sealing cylinder (4) away from the fan (32), and the tail end of the connecting pipe is located between the filter plate (31) and the sealing cylinder (4).

4. A high-security substation transformer according to claim 1, characterized in that: The middle of the liquid outlet pipe (64) is connected to a deformation warning ring (641), the inner wall of the deformation warning ring (641) is connected to a deformation ring (642), and the deformation ring (642) is supported by a water-swellable material. The deformation ring (642) is located above the one-way valve (7) in the liquid outlet pipe (64).

5. A high-security substation transformer according to claim 4, characterized in that: The initial inner diameter of the deformation warning ring (641) is the same as the inner diameter of the liquid outlet pipe (64), and the deformation warning ring (641) is made of an elastic waterproof material.

6. A high-security substation transformer according to claim 1, characterized in that: An electromagnetic sheet is embedded and installed on the top wall of the wall-attached heat dissipation frame (6), and a plurality of tension springs (63) are connected to the bottom of the electromagnetic sheet. The tail end of the tension spring (63) is connected to a magnetic strip (62) that repel the electromagnetic sheet.

7. A high-security substation transformer according to claim 1, characterized in that: A flip rod is installed through the interior of the second blocking plate (52), and the end of the flip rod is connected to the inner wall of the air outlet channel (5) through a damping reset shaft. A guide tube (651) extending to the interior of the wall-attached heat dissipation frame (6) is installed through the interior of the air outlet channel (5), and the guide tube (651) is located on the outside of the liquid guide strip (65).

8. A high-security substation transformer according to claim 1, characterized in that: An elastic tube (8) is installed through the interior of each of the No. 1 blocking plates (51), and the elastic tube (8) is located inside the transformer body (1) and fits against the inner bottom wall of the transformer body (1), and the elastic tube (8) is made of a wear-resistant heat-conductive material.

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