Liquid cooling device for transformer

Abstract

The invention discloses a transformer liquid cooling device which comprises a shell, a water outlet groove is formed in the top of the shell, a water pump is arranged on the water outlet groove, a box body is fixedly connected to the top of the water outlet groove, a cover plate is slidably connected to the outer side of the box body in a sleeving mode, a circulating mechanism is arranged on one side of the box body, and a sealing sleeve is fixedly connected to the inner side of the cover plate. The sealing sleeve is slidably connected with the box body, two filter screens which are symmetrically distributed are slidably connected into the box body in a sleeved mode, and a connecting rod is fixedly connected between the two filter screens jointly, and through the effect of the designed filter screens, cooling water in the water outlet groove can be filtered, impurities are prevented from affecting follow-up circulating flowing of the cooling water, and the cooling water can be cooled conveniently. A motor drives a top block to rotate to extrude a fixed block and cooperates with the elastic effect of a first spring to realize the shaking of the filter screen in the vertical direction, impurities are prevented from blocking filter holes of the filter screen, meanwhile, a circulating mechanism is used for accelerating air circulation, the cooling efficiency of the device is improved, and the device is low in cost, simple to maintain and suitable for large-scale popularization and application.

Description

Technical Field

[0001] The invention relates to the technical field of transformer cooling devices, in particular to a transformer liquid cooling device. Background Art

[0002] A transformer is an electrical device used to change the size of AC voltage. It consists of two or more coils and realizes voltage conversion through the principle of electromagnetic induction.

[0003] The invention patent with the patent authorization announcement number CN221427503U discloses a water-cooled heat dissipation and temperature reduction device for dry-type transformers. The invention includes a transformer housing, and circulating water cooling mechanisms are installed at both ends of the top of the transformer housing, and a condenser is installed between the two sets of circulating water cooling mechanisms. The circulating water cooling mechanism of the invention can further assist the exhaust fan and the condenser to quickly cool the inside of the transformer by water, improve the cooling efficiency, and ensure the normal use of the dry-type transformer, thereby increasing its service life.

[0004] The patent with patent authorization announcement number CN118248440A discloses a high-efficiency energy-saving power transformer, which relates to the field of transformer technology, including a device body and a mounting frame, the mounting frame is fixedly installed at the bottom of the device body, and a heat sink is fixedly installed on the surface of the device body, and also includes a cooling device and a protective device; wherein, a circular frame, a rotating shaft, a swing rod, a movable frame, a contact rod, a force plate, a hollow rubber, a limit plate, a sealing frame, a movable plate and a limit rod, the circular frame is fixedly installed on the surface of the heat sink, the rotating shaft is rotatably installed inside the circular frame, the surface of the rotating shaft is fixedly installed with fan blades, the swing rod is hinged at the top of the circular frame, the movable frame slides through the circular frame, and when the contact rod moves inside the spiral groove, it will push the rotating shaft to rotate, and when the rotating shaft rotates, it will drive the fan blades to rotate, and the leeward position of the device body will also be dissipated, thereby improving the heat dissipation effect of the device body.

[0005] The invention patent with patent authorization announcement number CN117373790A discloses a transformer cooling device based on coolant circulation and a control method thereof, which belongs to the field of transformer technology. The device includes a coolant cooling device, which is connected to multiple spray groups through a water pipe. The spray group is composed of multiple spray heads evenly arranged in a line. The multiple spray groups are respectively arranged in the odd-numbered or even-numbered gaps between the transformer heat sinks, and the spray groups are located at the seam above the gaps. A water receiving trough is arranged under the transformer heat sink. The water receiving trough is connected to the coolant cooling device through a water pump, a purifier and an electric valve. By circulating the coolant and using the coolant cooling device to refrigerate the coolant, the circulating cooling of the transformer is realized, the influence of the ambient temperature on the coolant is reduced, and it is ensured that the coolant can achieve the purpose of rapid cooling of the transformer. At the same time, the circulation amount of the coolant can be reduced, and the collected coolant can also be better atomized and sprayed.

[0006] The invention patent with patent authorization announcement number CN118522532A discloses a new energy photovoltaic box-type transformer cooling device, which belongs to the field of transformer cooling technology, including a cabinet, a temperature sensor is arranged at the lower end inside the cabinet, a single-chip microcomputer is arranged on one side of the temperature sensor, and a relay is arranged on the other side of the single-chip microcomputer. Through holes are arranged at both ends of the cabinet, and fans are arranged in the through holes. Dust-proof components are arranged at positions corresponding to the through holes at both ends of the cabinet; the present invention sets a dust-proof component, pulls the pull plate to drive the sliding rod and the limit plate to slide in the fixed cylinder, and the spring is compressed, and then the dust-proof net is placed in the fixed frame, and at the same time, the card blocks at both ends of the dust-proof net enter the card slot, release the pull plate, and the spring stretches to push one end of the sliding rod into the card hole at one end of the card block, so as to achieve the effect of limiting and fixing the card block and the dust-proof net. When the fan is blowing, the dust-proof net in the fixed frame can play a dust-proof role to prevent the fan from blowing dust and other impurities into the cabinet.

[0007] The invention patent with the patent authorization announcement number CN117148894A discloses an intelligent transformer cooling system for substations, which specifically relates to the field of power equipment operation and maintenance, and is used to solve the various drawbacks of existing transformer cooling solutions, including a core communication control device and a transformer fine water mist cooling device; it is through combining the ambient temperature information of the transformer, the transformer body load information and the operating environment information, to determine the operating status of the transformer in multiple dimensions, and according to the real-time operating status of the transformer, use the PID time domain control algorithm to accurately cool the transformer, ensure the safe operation of the transformer, and reduce the cost of later maintenance of the transformer.

[0008] In the above-mentioned prior art, the transformer cooling device used is usually very inconvenient to use and maintain, and it is relatively difficult to promote it in places with a small population. In addition, the relatively convenient water-cooled transformer cooling device may be contaminated with particulate impurities when adding cooling water during the use of the liquid cooling device, and it is inconvenient to filter. During the circulation of the cooling water, impurities may cause the pipeline to be blocked, affecting the use of liquid cooling, and the poor circulation of hot and cold water in the device reduces the heat dissipation efficiency, so it needs to be improved.

[0009] In many places, transformer cooling and heat dissipation devices cannot be installed due to inconvenient maintenance and high cost, which poses certain challenges to the safety of electricity use for the general public. Summary of the invention

[0010] The object of the present invention is to provide a liquid cooling device for a transformer, which uses water cooling to cool the transformer by designing a water tank on the top of the shell, and designs a filter screen and an anti-blocking mechanism so that the water cooling system can be protected from the influence of cooling water impurities and can operate continuously, and designs a circulation mechanism to accelerate the hot and cold circulation in the device. Through this design, a liquid cooling device for a transformer with good transformer performance is obtained under the premise of low cost and easy maintenance.

[0011] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a transformer liquid cooling device, comprising a shell, a water outlet trough is arranged on the top of the shell, a water pump is arranged on the water outlet trough, a box body is fixedly connected to the top of the water outlet trough, a cover plate is slidably sleeved on the outer side of the box body, a sealing sleeve is fixedly connected to the inner side of the cover plate, the sealing sleeve is slidably connected to the box body, two symmetrically distributed filter screens are slidably sleeved inside the box body, a connecting rod is fixedly connected between the two filter screens, a water outlet is fixedly connected inside the lower end of the box body, the water outlet is fixedly connected to the water outlet trough, an anti-blocking mechanism is arranged on the filter screen, and a connecting mechanism is arranged on the cover plate.

[0012] Preferably, the anti-blocking mechanism includes a bracket, the left end of the box is fixedly connected with the bracket, the inner side of the bracket is fixedly installed with a motor, the output end of the motor is rotatably connected with the box, the right end of the motor output end is fixedly connected with a rotating shaft, the rotating shaft is rotatably connected with the box, the top of the rotating shaft is fixedly connected with a top block, the top of the top block contacts with a fixed block, the fixed block is fixedly connected with one of the filter screens, the top of the other filter screen is fixedly connected with a guide rod, the outer side of the guide rod is slidably sleeved with a guide sleeve, the guide sleeve is slidably connected with a cover plate, the top of the guide rod is fixedly connected with a guide block, the guide block is slidably connected with the guide sleeve, and a first spring is arranged inside the guide sleeve. By designing an anti-blocking mechanism, the filter screen can be prevented from being blocked.

[0013] Preferably, one end of the first spring is fixedly connected to the guide block, and the other end of the first spring is fixedly connected to the guide sleeve. By designing the first spring, the force of the first spring can act on the guide block.

[0014] Preferably, the guide block is sleeved with a ball inside, and the ball is movably connected to the guide sleeve. By designing the ball, the smoothness of the guide block movement can be improved.

[0015] Preferably, the circulation device is provided with blades, which can allow water to flow in the device, so that the circulation of cold and hot water in the transformer cooling device maintains a benign circulation rate, which can improve the water cooling and heat dissipation efficiency of the device.

[0016] Preferably, the connection mechanism includes a fixed seat, the left and right ends of the cover are fixedly connected to the fixed seat, the fixed seat is internally slidably sleeved with a pull rod, the outside of the pull rod is fixedly connected with an insertion rod, the insertion rod is respectively slidably connected with the fixed seat, the cover and the box body, a second spring is arranged inside the fixed seat, the fixed seat is internally slidably sleeved with a slider, the slider is fixedly connected with the pull rod, the pull rod is internally slidably sleeved with a magnet, the magnet is fixedly connected with the fixed seat, and the pull rod is internally fixedly connected with a magnetic suction block. By designing the connection mechanism, it is convenient to disassemble the cover.

[0017] Preferably, one end of the second spring is fixedly connected to the slider, and the other end of the second spring is fixedly connected to the fixing seat. By designing the second spring, the force of the second spring can act on the slider.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention can filter the cooling water when conveying water to the inside of the water outlet tank by designing the function of the filter, thereby preventing the entry of impurities and preventing the impurities from affecting the subsequent circulation of the cooling water. In addition, during the filtering process through the filter, the motor drives the top block to rotate and squeeze the fixed block, and cooperates with the elastic action of the first spring to realize the vertical shaking of the filter, thereby preventing the impurities from clogging the filter holes of the filter.

[0020] 2. The present invention sets a circulation device. When the blades start to rotate, the water flow in the device is stirred, driving the water in various places in the device to circulate, which can balance the water temperature at different positions in the box, reduce the water temperature near the transformer, and accelerate the heat dissipation of the transformer. It has the advantages of simple maintenance and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0022] Figure 2 For the present invention Figure 1 A three-dimensional cross-sectional view of the local structure;

[0023] Figure 3 For the present invention Figure 2 A magnified image of point A;

[0024] Figure 4 For the present invention Figure 3 A front cross-sectional view of a guide sleeve;

[0025] Figure 5 For the present invention Figure 3 Front cross-sectional view of the fixing seat.

[0026] In the attached figure:

[0027] 1. Shell; 2. Water outlet; 3. Water pump; 4. Box; 5. Cover; 6. Sealing sleeve; 7. Filter; 8. Anti-blocking mechanism; 9. Connecting mechanism; 10. Connecting rod; 11. Water outlet; 12. Circulation mechanism;

[0028] 81. bracket; 82. motor; 83. rotating shaft; 84. top block; 85. fixing block; 86. guide rod; 87. guide sleeve; 88. guide block; 89. first spring;

[0029] 891, ball bearing;

[0030] 91. fixed seat; 92. pull rod; 93. plug rod; 94. second spring; 95. slider; 96. magnet; 97. magnetic block;

[0031] 121. baffle; 122. blade; 123. partition. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", "longitudinal" and the like should be understood in a broad sense, for example: it can be fixedly connected; it can also be detachably connected; or integrated; it can be mechanically connected; it can also be electrically connected; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Example 1:

[0035] The transformer liquid cooling device comprises a shell 1, a water outlet trough 2 is arranged on the top of the shell 1, a water pump 3 is arranged on the water outlet trough 2, a box body 4 is fixedly connected to the top of the water outlet trough 2, a cover plate 5 is slidably sleeved on the outer side of the box body 4, a sealing sleeve 6 is fixedly connected on the inner side of the cover plate 5, the sealing sleeve 6 is slidably connected to the box body 4, two symmetrically distributed filter screens 7 are slidably sleeved inside the box body 4, a connecting rod 10 is fixedly connected between the two filter screens 7, a water outlet 11 is fixedly connected inside the lower end of the box body 4, the water outlet 11 is fixedly connected to the water outlet trough 2, an anti-blocking mechanism 8 is arranged on the filter screen 7, and a connecting mechanism 9 is arranged on the cover plate 5.

[0036] The anti-blocking mechanism 8 includes a bracket 81, the left end of the box body 4 is fixedly connected with the bracket 81, the inner side of the bracket 81 is fixedly installed with a motor 82, the output end of the motor 82 is rotatably connected to the box body 4, the right end of the output end of the motor 82 is fixedly connected with a rotating shaft 83, the rotating shaft 83 is rotatably connected to the box body 4, the top of the rotating shaft 83 is fixedly connected with a top block 84, the top of the top block 84 contacts with a fixed block 85, the fixed block 85 is fixedly connected to one of the filter screens 7, the top of the other filter screen 7 is fixedly connected with a guide rod 86, the outer side of the guide rod 86 is slidably sleeved with a guide sleeve 87, and the guide sleeve 87 is slidably connected to the cover plate 5 A guide block 88 is fixedly connected to the top of the guide rod 86, and the guide block 88 is slidably connected to the guide sleeve 87. A first spring 89 is arranged inside the guide sleeve 87, and one end of the first spring 89 is fixedly connected to the guide block 88, and the other end of the first spring 89 is fixedly connected to the guide sleeve 87. By designing the first spring 89, the force of the first spring 89 can act on the guide block 88. A ball 891 is movably sleeved inside the guide block 88, and the ball 891 is movably connected to the guide sleeve 87. By designing the ball 891, the smoothness of the movement of the guide block 88 can be improved, and by designing the anti-blocking mechanism 8, the filter screen 7 can be prevented from being blocked.

[0037] See also Figure 1 , Figure 2 , Figure 3 , Figure 5 The connecting mechanism 9 includes a fixed seat 91, and the left and right ends of the cover plate 5 are fixedly connected to the fixed seat 91. The fixed seat 91 is internally slidably sleeved with a pull rod 92, and the outer side of the pull rod 92 is fixedly connected with an insertion rod 93. The insertion rod 93 is slidably connected to the fixed seat 91, the cover plate 5 and the box body 4 respectively. A second spring 94 is arranged inside the fixed seat 91, one end of the second spring 94 is fixedly connected to the slider 95, and the other end of the second spring 94 is fixedly connected to the fixed seat 91. By designing the second spring 94, the force of the second spring 94 can act on the slider 95. The fixed seat 91 is internally slidably sleeved with a slider 95, and the slider 95 is fixedly connected to the pull rod 92. The pull rod 92 is internally slidably sleeved with a magnet 96, and the magnet 96 is fixedly connected to the fixed seat 91. The pull rod 92 is internally fixedly connected with a magnetic suction block 97. By designing the connecting mechanism 9, it is convenient to disassemble the cover plate 5.

[0038] The specific implementation process of the present invention is as follows: when in use, the water inside the water outlet trough 2 can be sucked by the action of the water pump 3, and the water flow circulation in the blade 12 stirring device is started to circulate the cooling water to realize the liquid cooling of the transformer. When it is necessary to supply water to the inside of the water outlet trough 2, the cooling water is first input into the box body 4, and then the cooling water will be filtered under the action of the filter 7 to avoid the entry of impurities and prevent impurities from affecting the subsequent circulation of cooling water. During the cooling water filtration process, the output end of the motor 82 drives the rotating shaft 83 to rotate, and the rotating shaft 83 drives the top block 84 to rotate. The top block 84 rotates and contacts with the fixed block 85, so that the fixed block 85 drives the filter 7 to move upward, and the filter 7 drives the guide rod 86 to slide along the guide sleeve 87, and the guide rod 86 drives the guide block 88 to move upward. The guide block 88 will squeeze the first spring 89. When the top block 84 rotates and separates from the fixed block 85, the filter 7 can be quickly moved down and reset under the elastic action of the first spring 89. The continuous rotation of the motor 82 can realize the reciprocating vibration of the filter 7 in the vertical direction to prevent impurities from clogging the filter holes of the filter 7.

[0039] When the filter 7 needs to be disassembled, the pull rod 92 is pulled horizontally, and the pull rod 92 drives the slider 95 to move. The slider 95 squeezes the second spring 94, and at the same time, the pull rod 92 drives the insertion rod 93 to move, and the pull rod 92 drives the magnetic block 97 to move and adsorb to the magnet 96, and at the same time, the insertion rod 93 is separated from the box body 4, and the cover plate 5 can be removed. The cover plate 5 can be easily disassembled, which is convenient for filling water into the box body 4, and it is also convenient to take out the filter 7 for maintenance.

[0040] Example 2:

[0041] Figure 1 The structural diagram of the transformer liquid cooling device of the present invention is given. The transformer liquid cooling device mainly includes a shell 1, a water outlet trough 2, a water pump 3, a box body 4 and the like as a main body. The water pump 3 is arranged on the water outlet trough 2. Now, each component is further described.

[0042] The outer shell 1 is made of cold-rolled plate sprayed with plastic as the material to provide protection for the entire device; the water outlet 2 creates a stable buffer space when the cooling water enters and exits the box; the function of the water pump 3 is to pressurize the water to the working pressure under the drive of the motor, to ensure the pressure stability during the operation of the system, and to make the water heat circulation in the device to maintain the normal operation of the system; the box 4 is insulated with thermal insulation materials around to reduce the impact of the external environment on the transformer liquid cooling device. When it is not used for a long time or the ambient temperature is below 4°C, the water needs to be drained; the box 4 is provided with a liquid level controller, which can automatically replenish water when the liquid level in the box 4 is lowered, and stop replenishing water when the cooling water fills the box 4.

[0043] There are two operating modes for the transformer liquid cooling device: manual and automatic. The two operating modes are described in detail below:

[0044] Preparation:

[0045] 1. First plug in the power supply, the power indicator light will turn on;

[0046] Manual Operation

[0047] 2. Press the start switch and adjust the device to manual mode;

[0048] 3. Turn on the water filling switch, and the box will start to automatically replenish water;

[0049] 4. When you need to stop, first press the water filling stop button, then press the liquid cooling switch, and finally press the water pump switch to start pressurizing, and the cooling water in the water tank starts to circulate;

[0050] 5. Confirm that the system working indicator light is always on;

[0051] Automatic operation

[0052] 2. Press the start switch and adjust the device to automatic mode;

[0053] 3. The self-test signal is sent remotely, the device starts self-testing, and water is added to the box. At this time, the self-test indicator light is always on;

[0054] 4. A start signal is sent remotely, and the water pump begins to pressurize. When the working pressure is reached, water heat circulation begins in the device;

[0055] 5. When in automatic control state, the system is working, and the system working indicator light is constant;

[0056] The precautions for using transformer liquid cooling device are as follows:

[0057] 1. It is prohibited to use this device in violation of regulations to avoid personal injury and property loss;

[0058] 2. It is strictly forbidden to operate the device without cooling water;

[0059] 3. All main valves must be in the normally open state during operation;

[0060] Example 3:

[0061] The difference between this example and Example 1 is that: the transformer liquid cooling device, this example provides a transformer liquid cooling device control method, a temperature sensor is installed inside the box, and the operating power of the water pump 3 and the blade 122 is controlled according to the temperature sensor, which can reduce the energy consumption of the transformer liquid cooling device.

[0062] 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. A transformer liquid cooling device, comprising a housing (1), characterized in that: The top of the shell (1) is provided with a water outlet trough (2), the water outlet trough (2) is provided with a water pump (3), the top of the water outlet trough (2) is fixedly connected with a box body (4), the outer side of the box body (4) is slidably sleeved with a cover plate (5), the inner side of the cover plate (5) is fixedly connected with a sealing sleeve (6), the sealing sleeve (6) is slidably connected with the box body (4), the interior of the box body (4) is slidably sleeved with two symmetrically distributed filter screens (7), a connecting rod (10) is provided between the two filter screens (7), a penetrating water outlet (11) is provided on the lower side of the box body (4), the water outlet (11) is connected to the water outlet trough (2), an anti-blocking mechanism (8) is provided under the filter screen (7), connecting mechanisms (9) are respectively provided on both sides of the cover plate (5), and a circulation mechanism (12) is provided on one side of the shell (1).

2. The transformer liquid cooling device according to claim 1 is characterized in that: The circulation mechanism (12) comprises a baffle (121), a blade (122) is arranged on the baffle (121), and a partition (123) is arranged under the baffle.

3. The transformer liquid cooling device according to claim 2 is characterized in that: The anti-blocking mechanism (8) comprises a bracket (81), the bracket (81) is arranged on the outside of the box body (4), and a motor (82) is fixedly mounted on the inside of the bracket (81).

4. The transformer liquid cooling device according to claim 3 is characterized in that: The output end of the motor (82) is rotatably connected to the box (4), the output end of the motor (82) is fixedly connected to a rotating shaft (83), the rotating shaft (83) is rotatably connected to the box (4), and the top of the rotating shaft (83) is fixedly connected to a top block (84).

5. The transformer liquid cooling device according to claim 4 is characterized in that: The top of the top block (84) is in contact with a fixed block (85), the fixed block (85) is fixedly connected to one of the filter screens (7), the top of the other filter screen (7) is fixedly connected to a guide rod (86), the outer side of the guide rod (86) is slidably sleeved with a guide sleeve (87), the guide sleeve (87) is slidably connected to the cover plate (5), the top of the guide rod (86) is fixedly connected to a guide block (88), the guide block (88) is slidably connected to the guide sleeve (87), and a first spring (89) is arranged inside the guide sleeve (87).

6. The transformer liquid cooling device according to claim 5, characterized in that: One end of the first spring (89) is fixedly connected to the guide block (88), and the other end of the first spring (89) is fixedly connected to the guide sleeve (87).

7. The transformer liquid cooling device according to claim 6, characterized in that: A ball (891) is movably sleeved inside the guide block (88), and the ball (891) is movably connected to the guide sleeve (87).

8. The transformer liquid cooling device according to claim 7, characterized in that: The connecting mechanism (9) includes a fixed seat (91), the fixed seat (91) is connected to one side of the cover plate (5), the fixed seat (91) is internally slidably sleeved with a pull rod (92), the outer side of the pull rod (92) is fixedly connected with an insertion rod (93), the insertion rod (93) is respectively slidably connected to the fixed seat (91), the cover plate (5) and the box body (4), a second spring (94) is arranged inside the fixed seat (91), the fixed seat (91) is internally slidably sleeved with a slider (95), and the slider (95) is fixedly connected to the pull rod (92).

9. The transformer liquid cooling device according to claim 8, characterized in that: The pull rod (92) is internally slidably sleeved with a magnet (96), the magnet (96) is fixedly connected to the fixing seat (91), and the pull rod (92) is internally fixedly connected with a magnetic attraction block (97).

10. The transformer liquid cooling device according to claim 9, characterized in that: One end of the second spring (94) is fixedly connected to the slider (95), and the other end of the second spring (94) is fixedly connected to the fixing seat (91).

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