Circulating cooling device of power transformer

Abstract

The utility model relates to the technical field of power transformer cooling, in particular to a power transformer circulating cooling device which comprises a box body mechanism, a circulating refrigeration mechanism installed in the box body mechanism and a heat removal mechanism installed on the circulating refrigeration mechanism. The box body mechanism comprises a transformer box plate, a protective partition plate located on the outer wall of the transformer box plate, four sets of combined bolts installed in the transformer box plate and the protective partition plate, and a fan cover installed in a notch in the protective partition plate. The motor is started to operate, the motor can be matched with the caterpillar band to drive the turbine blade shaft, cooling liquid in an inner cavity of the refrigeration pipe can be actively circulated, the multiple refrigeration pieces which continuously operate can continuously cool the heat conduction shells, and the cooling liquid which actively circulates in the inner cavity of the refrigeration pipe can be forcibly refrigerated by the multiple heat conduction shells at the moment. And in combination with the directional transfer of the fan blades to the air flow, the air flow which passes through the gaps of the refrigeration pipes and is refrigerated can flow to each element of the transformer from the air grooves in the inner wall of the box plate of the transformer.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling the temperature of power transformers, in particular to a circulating cooling device for power transformers. Background Art

[0002] A power transformer is a static electrical device that is used to convert an AC voltage (current) of a certain value into another or several different voltages (currents) of the same frequency.

[0003] At present, when the power transformer is in continuous operation, its internal components will continue to heat up. When the outside temperature is not high, the temperature rise of the internal components of the transformer will be maintained by conventional cooling to maintain normal operation. Once the outside temperature continues to rise, the effect of conventional cooling inside the transformer will decrease, and the continuous hot air flow cannot cool down the components inside the transformer.

[0004] Regarding the temperature control of power transformers, when the outside temperature continues to rise, how to prevent the refrigeration equipment from blowing hot air to the internal components of the transformer during cooling is a technical difficulty that needs to be solved. Utility Model Content

[0005] The utility model aims to solve one of the technical problems existing in the prior art or related technology.

[0006] To this end, the technical solution adopted in this utility model is:

[0007] A circulating cooling device for a power transformer comprises a box body, a circulating refrigeration mechanism installed in the box body, and a heat dissipation mechanism installed on the circulating refrigeration mechanism, wherein the box body comprises a transformer box plate, a protective baffle located on the outer wall of the transformer box plate, four groups of combined bolts installed in the transformer box plate and the protective baffle, and a wind hood installed in a notch inside the protective baffle, the circulating refrigeration mechanism comprises a battery, a wire connected to an external terminal of the battery, a plurality of refrigeration components connected to the wire, a heat-conducting shell fixedly installed on the outside of the refrigeration components, and a positioning shell installed on the outside of the heat-conducting shell, and the heat dissipation mechanism comprises a refrigeration pipe installed between the heat-conducting shell and the positioning shell, an anti-seepage sleeve fixedly installed in the refrigeration pipe, a turbine blade shaft movably installed in the refrigeration pipe and the anti-seepage sleeve, a crawler belt driven on the turbine blade shaft, a motor driven in the crawler belt, and a fan blade installed on the outer end of the turbine blade shaft.

[0008] In a preferred example, the utility model can be further configured as follows: the protective baffle is made of ceramic material, and the wind shield is composed of a plastic ring and a filter.

[0009] By adopting the above technical solution, the protective partition is fixedly installed on the outer wall of the transformer box plate using four sets of combined bolts. At this time, an independent rectangular cavity is formed between the transformer box plate and the protective partition. When the refrigeration pipe is fixedly installed on the transformer box plate by an external clamp and bolts, the refrigerant liquid circulating in the inner cavity of the refrigeration pipe can force cooling of the inflowing airflow.

[0010] In a preferred example, the utility model can be further configured as follows: the refrigeration element is composed of an insulating shell and a semiconductor refrigeration element, and two groups of lead sleeves are symmetrically installed on both sides of the insulating shell.

[0011] By adopting the above technical solution, the insulating shell inside the refrigeration component is fixedly installed in the hole reserved in the heat-conductive shell, and the semiconductor refrigeration room is installed inside the insulating shell. At this time, the semiconductor refrigeration component will fit on the wall of the refrigeration pipe, and the semiconductor refrigeration component will fit on the inner wall of the hole in the heat-conductive shell.

[0012] In a preferred example, the utility model can be further configured as follows: the heat-conducting shell and the positioning shell are made of aluminum alloy, and symmetrically distributed clamps are installed on the top and bottom of the heat-conducting shell and the positioning shell respectively, and locking bolts are connected inside two adjacent clamps.

[0013] By adopting the above technical solution, the clamps on the heat-conducting shell and the positioning shell are fixed by using locking bolts. At this time, the heat-conducting shell and the positioning shell after docking can be selectively clamped according to the length of the refrigeration pipe body.

[0014] In a preferred example, the utility model can be further configured as follows: a cylindrical shell is installed at one end of the refrigeration pipe close to the motor, and return ducts are respectively connected to both ends of the refrigeration pipe, and auxiliary ends are respectively connected to the middle rod body of the turbine blade shaft and the transmission shaft of the motor.

[0015] By adopting the above technical solution, the turbine blades of the turbine shaft are arranged in the cylindrical shell inside the refrigeration tube. When the auxiliary end on the turbine shaft is driven by the crawler, the coolant passing through the cylindrical shell can be forced to circulate by the turbine blades in the turbine shaft.

[0016] By adopting the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0017] 1. The utility model starts the motor to run, and the motor can cooperate with the crawler to drive the turbine blade shaft. At this time, the coolant in the inner cavity of the refrigeration tube can be actively circulated, and the continuously running multiple refrigeration parts will continuously cool the heat-conducting shell. At this time, the coolant in the inner cavity of the refrigeration tube that is actively circulated can be forcibly cooled by the multiple heat-conducting shells, and combined with the directional transfer of the airflow by the fan blades, the airflow that passes through the gap of the refrigeration tube and is cooled can flow from the wind groove on the inner wall of the transformer box plate to various components of the transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the utility model when in use;

[0019] Figure 2 It is a dispersed schematic diagram of the box mechanism of the utility model;

[0020] Figure 3 It is a schematic diagram of the circulating refrigeration mechanism of the utility model;

[0021] Figure 4 For this utility model Figure 3 The enlarged schematic diagram of point A in the middle;

[0022] Figure 5 It is a partial schematic diagram of the heat dissipation mechanism of the utility model;

[0023] Figure 6 It is a partial dispersion diagram of the circulating refrigeration mechanism of the utility model.

[0024] Reference numerals:

[0025] 100, box body; 110, transformer box plate; 120, protective partition; 130, combination bolts; 140, wind shield;

[0026] 200, circulating refrigeration mechanism; 210, storage battery; 220, wire; 230, refrigeration element; 240, heat-conducting housing; 250, positioning housing;

[0027] 300, heat dissipation mechanism; 310, refrigeration pipe; 320, anti-seepage casing; 330, turbine shaft; 340, motor; 350, crawler track; 360, fan blade. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0029] It should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present invention.

[0030] A circulating cooling device for a power transformer provided by some embodiments of the utility model will be described below in conjunction with the accompanying drawings.

[0031] Embodiment 1:

[0032] Combination Figure 1-Figure 6As shown, the utility model provides a circulating cooling device for a power transformer, comprising a box body mechanism 100 , a circulating refrigeration mechanism 200 installed in the box body mechanism 100 , and a heat dissipation mechanism 300 installed on the circulating refrigeration mechanism 200 .

[0033] The box mechanism 100 includes a transformer box plate 110, a protective baffle 120, a combination bolt 130 and a wind hood 140, the circulating refrigeration mechanism 200 includes a battery 210, a wire 220, a refrigeration component 230, a heat-conducting shell 240 and a positioning shell 250, and the heat dissipation mechanism 300 includes a refrigeration pipe 310, an anti-seepage sleeve 320, a turbine blade shaft 330, a motor 340, a track 350 and a fan blade 360.

[0034] Specifically, the protective baffle 120 is located on the outer wall of the transformer box plate 110, four groups of combined bolts 130 are installed in the transformer box plate 110 and the protective baffle 120, the wind hood 140 is installed in the groove inside the protective baffle 120, the wire 220 is connected to the terminal post outside the battery 210, multiple refrigeration components 230 are connected to the wire 220, the heat-conducting shell 240 is fixedly installed on the outside of the refrigeration component 230, the positioning shell 250 is installed on the outside of the heat-conducting shell 240, the refrigeration pipe 310 is installed between the heat-conducting shell 240 and the positioning shell 250, the anti-seepage sleeve 320 is fixedly installed in the refrigeration pipe 310, the turbine blade shaft 330 is movably installed in the refrigeration pipe 310 and the anti-seepage sleeve 320, the crawler 350 is driven on the turbine blade shaft 330, the motor 340 is driven in the crawler 350, and the fan blade 360 ​​is installed on the outer end of the turbine blade shaft 330.

[0035] A groove is formed on the transformer box plate 110 outside the existing transformer, and a cooling tube 310 for storing coolant is installed in the groove of the transformer box plate 110, and a turbine blade shaft 330 is movably installed in the cooling tube 310. At the same time, a motor 340 is fixedly installed inside the transformer box plate 110, and multiple groups of heat-conducting shells 240 and positioning shells 250 are combined to evenly assemble the tube wall of the cooling tube 310. After the terminal on the battery 210 and the terminal on the multiple cooling parts 230 are connected with the wire, the motor 340 in the running state can cooperate with the crawler 35 0 drives the turbine blade shaft 330, at this time, the coolant in the inner cavity of the cooling tube 310 can be actively circulated, and the continuously running multiple cooling components 230 will continuously cool the heat-conducting shell 240. At this time, the coolant in the inner cavity of the cooling tube 310 that is actively circulated can be forced to cool by the multiple heat-conducting shells 240, and combined with the directional transfer of the airflow by the fan blades 360, the airflow that passes through the gap of the cooling tube 310 and is cooled can flow from the wind groove on the inner wall of the transformer box plate 110 to various components of the transformer, thereby ensuring that the continuously rising temperature of the outside world will not affect the components inside the transformer.

[0036] Embodiment 2:

[0037] Combination Figure 2-Figure 3 As shown, on the basis of Example 1, the protective baffle 120 is made of ceramic material, the wind cover 140 is composed of a plastic ring and a filter, a cylindrical shell is installed at one end of the refrigeration pipe 310 close to the motor 340, and the two ends of the refrigeration pipe 310 are respectively connected to the return duct, and the middle rod body of the turbine blade shaft 330 and the transmission shaft of the motor 340 are respectively connected to the auxiliary end.

[0038] The protective baffle 120 is fixedly installed on the outer wall of the transformer box plate 110 by using four sets of combined bolts 130. At this time, an independent rectangular cavity will be formed between the transformer box plate 110 and the protective baffle 120. As the auxiliary end on the turbine blade shaft 330 is driven by the track 350, the coolant passing through the cylindrical shell can be forced to circulate by the turbine blades in the turbine blade shaft 330. At this time, the coolant in the inner cavity of the refrigeration pipe 310 can cooperate with the refrigeration part 230, the heat-conducting shell 240 and the positioning shell 250 to achieve rapid refrigeration. When the refrigeration pipe 310 is fixedly installed on the transformer box plate 110 by an external clamp and bolts, the refrigerant circulating in the inner cavity of the refrigeration pipe 310 can force the incoming airflow to cool down. Finally, the refrigerated airflow will cool down the components of the transformer in the transformer box plate 110, and then the incoming airflow can be forced to cool down.

[0039] Embodiment three:

[0040] Combination Figure 3-Figure 6 As shown, on the basis of embodiment one, the refrigeration element 230 is composed of an insulating shell and a semiconductor refrigeration element, and two groups of lead sleeves are symmetrically installed on both sides of the insulating shell, the heat-conducting shell 240 and the positioning shell 250 are made of aluminum alloy, and symmetrically distributed clamps are installed on the top and bottom of the heat-conducting shell 240 and the positioning shell 250, and locking bolts are connected in two adjacent clamps.

[0041] By fixing the insulating shell in the refrigeration component 230 in the hole reserved in the heat-conductive shell 240, and installing the semiconductor refrigeration room inside the insulating shell, the semiconductor refrigeration component will fit on the tube wall of the refrigeration tube 310, and the semiconductor refrigeration component will fit on the inner wall of the hole of the heat-conductive shell 240, and the clamps on the heat-conductive shell 240 and the positioning shell 250 are fixed with the locking bolts. At this time, the docked heat-conductive shell 240 and the positioning shell 250 can be selectively clamped according to the length of the tube body of the refrigeration tube 310. According to the tube length of the refrigeration tube 310, multiple groups of heat-conductive shells 240 and positioning shells 250 are set within the rated spacing, so that the coolant inside the refrigeration tube 310 can be efficiently cooled. As the coolant continues to circulate, the heat-conductive shell 240 and the positioning shell 250 will cool the coolant flowing in the refrigeration tube 310, thereby avoiding the interference of external high temperature on the coolant.

[0042] The working principle and use process of the utility model are as follows: the anti-seepage sleeve 320 is pre-installed on the cylindrical shell of the refrigeration pipe 310 near one end of the motor 340, and the turbine blade shaft 330 is movably installed in the cylindrical shell, and one end of the shaft rod in the middle of the turbine blade shaft 330 is adapted to penetrate the outside of the cylindrical shell, and the fan blade 360 ​​is fixedly installed on the outer end of the turbine blade shaft 330 by bolts, and the motor 340 is fixedly installed in the transverse hole of the transformer box plate 110, and the auxiliary end on the transmission shaft in the motor 340 will cooperate with the crawler 350 to link the auxiliary end on the rod body of the turbine blade shaft 330, and then the multiple sets of heat-conducting shells 240 and positioning shells 250 are evenly installed on the outside of the refrigeration pipe 310 by locking bolts;

[0043] During use, as the motor 340 runs, its internal transmission shaft will cooperate with the track 350 to drive the turbine blade shaft 330. At this time, the coolant stored in the inner cavity of the refrigeration tube 310 will be actively circulated, and the coolant in the inner cavity of the refrigeration tube 310 will be pressurized and will continue to pass through multiple heat-conducting shells 240. As the wires on the battery 210 function on multiple refrigeration components 230, the multiple refrigeration components 230 can be combined with the multiple heat-conducting shells 240 to continuously cool the tube wall of the refrigeration tube 310. At the same time, the fan blades 360 that are rotating at high speed draw outside air into the inner cavity of the transformer box plate 110 and the protective baffle 120. After the directional airflow is cooled by the refrigeration tube 310, the transformer assembled in the inner cavity of the transformer box plate 110 can be actively cooled.

[0044] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A circulating cooling device for a power transformer, comprising a box structure (100), characterized in that: A circulating refrigeration mechanism (200) installed in the box mechanism (100) and a heat dissipation mechanism (300) installed on the circulating refrigeration mechanism (200); The circulating refrigeration mechanism (200) comprises a storage battery (210), a wire (220) connected to an external terminal of the storage battery (210), a plurality of refrigeration components (230) connected to the wire (220), a heat-conducting outer shell (240) fixedly mounted on the outside of the refrigeration components (230), and a positioning outer shell (250) mounted on the outside of the heat-conducting outer shell (240); The heat dissipation mechanism (300) comprises a refrigeration pipe (310) installed between a heat-conducting outer shell (240) and a positioning outer shell (250), an anti-seepage sleeve (320) fixedly installed in the refrigeration pipe (310), a turbine blade shaft (330) movably installed in the refrigeration pipe (310) and the anti-seepage sleeve (320), a crawler (350) driven on the turbine blade shaft (330), a motor (340) driven in the crawler (350), and a fan blade (360) installed on the outer end of the turbine blade shaft (330).

2. A circulating cooling device for a power transformer according to claim 1, characterized in that: The box structure (100) comprises a transformer box plate (110), a protective partition (120) located on the outer wall of the transformer box plate (110), four groups of combined bolts (130) installed in the transformer box plate (110) and the protective partition (120), and a wind shield (140) installed in a notch inside the protective partition (120).

3. A circulating cooling device for a power transformer according to claim 2, characterized in that: The protective baffle (120) is made of ceramic material, and the wind cover (140) is composed of a plastic ring and a filter screen.

4. A circulating cooling device for a power transformer according to claim 1, characterized in that: The refrigeration element (230) is composed of an insulating shell and a semiconductor refrigeration element, and two groups of lead sleeves distributed symmetrically are installed on both sides of the insulating shell.

5. The circulating cooling device for a power transformer according to claim 1, characterized in that: The heat-conducting outer shell (240) and the positioning outer shell (250) are made of aluminum alloy, and symmetrically distributed clamps are respectively installed on the top and bottom of the heat-conducting outer shell (240) and the positioning outer shell (250), and locking bolts are connected inside two adjacent clamps.

6. A circulating cooling device for a power transformer according to claim 1, characterized in that: A cylindrical shell is installed at one end of the refrigeration tube (310) close to the motor (340), and both ends of the refrigeration tube (310) are respectively connected to a return conduit.

7. The circulating cooling device for a power transformer according to claim 1, characterized in that: The middle rod body of the turbine blade shaft (330) and the transmission shaft of the motor (340) are respectively connected to auxiliary ends.

Images