CN211427993U - Oil-immersed transformer with filter screen convenient to replace - Google Patents
Oil-immersed transformer with filter screen convenient to replace Download PDFInfo
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- CN211427993U CN211427993U CN201922390350.4U CN201922390350U CN211427993U CN 211427993 U CN211427993 U CN 211427993U CN 201922390350 U CN201922390350 U CN 201922390350U CN 211427993 U CN211427993 U CN 211427993U
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- transformer
- shell
- oil
- filter screen
- filter
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Abstract
The utility model relates to a transformer technical field especially indicates a conveniently change oil-immersed transformer of filter screen, it is including transformer body and transformer housing. The transformer shell is internally injected with transformer oil, a filter plate is embedded in the transformer shell, and the transformer body is fixed in the transformer shell and is positioned on one side of the filter plate. The upper end of the filter plate is provided with a strip-shaped groove which penetrates through two sides, and a connecting lug is fixed on the filter frame above the strip-shaped groove and detachably fixed on the transformer shell; the transformer shell is characterized in that a mounting groove penetrating through the inside of the transformer shell is formed in the top plane of the transformer shell, the length of the mounting groove is consistent with the width of the filter plate, embedded grooves are vertically connected to the two sides of the mounting groove on the top plane of the transformer shell, and the distance between the embedded grooves is slightly smaller than the length of the strip-shaped groove. The top of the transformer shell is also fixed with a protective cover, and the protective cover covers the mounting groove, the embedded groove and the filter plate.
Description
Technical Field
The utility model relates to the technical field of transformers, especially indicate a conveniently change oil-immersed transformer of filter screen.
Background
An oil-immersed transformer is often adopted in an existing power system under the condition that the power system needs to be sealed, an oil tank is a shell of the oil-immersed transformer, an iron core and a winding of a transformer body are arranged in the oil tank, and the oil tank is filled with transformer oil. Transformer oil, transformer oil's main effect is insulating, requires transformer oil very pure, however in the work of on-the-spot transformer, the high temperature that equipment produced can gather in transformer oil, leads to transformer oil to appear that macromolecular impurity accumulates, if macromolecular impurity is too much, can influence transformer oil's insulating properties and high temperature performance, leads to the heat to disperse not enough even, and equipment trips. In view of this, the related art has developed an oil-immersed transformer with filtering function, such as the oil-immersed transformer disclosed in application No. 201620728792.9, which filters impurities in transformer oil through a filter screen, however, in the technical solution disclosed in the patent, it is troublesome to remove the first casing and the second casing after the transformer oil in the whole transformer casing is drained out to replace the filter screen.
SUMMERY OF THE UTILITY MODEL
The utility model provides a conveniently change oil-immersed transformer of filter screen to overcome the problem that the filter screen is not convenient for change among the current oil-immersed transformer.
The utility model adopts the following technical scheme: the utility model provides a conveniently change oil-immersed transformer of filter screen, including transformer body and transformer housing, the inside transformer oil that has poured into of transformer housing still has inlayed the filter in the transformer housing, the transformer body is fixed in just be located in the transformer housing filter one side, its characterized in that: the filter plate comprises a filter frame and a filter screen, the center of the filter frame is hollow, the filter screen covers the center of the filter frame, a strip-shaped groove penetrating through two sides is formed in the upper end of the filter frame, a connecting lug is fixed on the filter frame above the strip-shaped groove, and the connecting lug is detachably fixed on the transformer shell; the top plane of the transformer shell is provided with a mounting groove penetrating into the transformer shell, the length of the mounting groove is consistent with the width of the filter plate, embedded grooves are vertically connected to the two sides of the mounting groove on the top plane of the transformer shell, and the distance between the two embedded grooves is slightly smaller than the length of the strip-shaped groove; the top of the transformer shell is also fixed with a protective cover, and the protective cover covers the mounting groove, the embedded groove and the filter plate.
As a further improvement, the heat exchanger is characterized by comprising a heat exchanger, wherein the heat exchanger comprises a heat exchanger shell and a heat exchange tube, the heat exchanger shell is fixedly connected with one side of the lower shell, cooling water which can be updated continuously is injected into the heat exchanger shell, the heat exchange tube is a bent tube, a bent section of the heat exchange tube is positioned in the heat exchanger, two ports of the heat exchange tube are positioned in the transformer shell, and one port of the heat exchange tube is connected with a liquid pump.
As a further improvement, the surface of the filter screen is provided with a plurality of through holes, and one end of each heat exchange tube, which is not connected with the liquid pump, correspondingly penetrates through the through holes respectively.
As a further improvement, the transformer shell comprises a lower shell and an upper shell, the upper shell and the lower shell are installed in a vertically corresponding mode, the installation groove and the embedded groove are formed in the top surface of the upper shell, and transformer oil is contained in the lower shell.
As a further improvement, flanges are fixed on the outer edge of the opening of the lower shell and the outer edge of the upper shell, a sealing ring is arranged between the flange of the upper shell and the flange of the lower shell, and the flange of the upper shell and the flange of the lower shell are fixedly connected through penetrating bolts.
As a further improvement, both sides of the bottom surface in the transformer shell are respectively provided with a limiting groove, the front end of a notch of each limiting groove is aligned with the rear end of the embedded groove, both ends of one side of the bottom of the filter plate are respectively provided with a limiting rod, and the limiting rods are respectively embedded into the limiting grooves correspondingly.
As a further improvement, the length of the limiting rod is slightly smaller than that of the embedded groove.
As a further improvement, flanges are fixed on the outer edge of the top plane of the upper shell and the outer edge of the bottom opening of the protective cover, a sealing ring is arranged between the flange of the upper shell and the flange of the protective cover, and the flange of the upper shell and the flange of the lower shell are fixedly connected through penetrating bolts.
As a further improvement, the filter frame is fixed with a connection lug above the strip-shaped groove, a connection hole is arranged on the connection lug, a fixing bolt penetrates through the connection hole, a fixing nut is fixed on the upper shell between the two embedded grooves, the fixing nut corresponds to the connection hole of the connection lug coaxially, and the fixing nut is connected with the fixing bolt of the connection lug in an adaptive mode.
From the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages: the utility model discloses a transformer housing main part is the structure of corresponding installation about last casing and lower casing, and transformer oil and transformer main part are internal in the inferior valve, and this structure can prevent that transformer oil from revealing from transformer main part's both sides or bottom to when changing the filter screen, need not to let out transformer oil, it is comparatively convenient. Specifically, when the filter screen of filter needs to be changed, only need dismantle the protection casing after, screw out fixing bolt, can upwards take out the filter and change the filter screen, it is very convenient.
Drawings
Fig. 1 is a schematic view of the instant structure of the present invention.
Fig. 2 is a schematic side view of the internal structure of the present invention.
Fig. 3 is an enlarged schematic view of a point a in fig. 2.
Fig. 4 is an enlarged schematic view of fig. 2 at B.
Fig. 5 is an enlarged schematic view at C in fig. 2.
Fig. 6 is a schematic cross-sectional view taken along direction D-D in fig. 2.
Fig. 7 is a perspective view of an external structure of a transformer case.
Fig. 8 is an enlarged schematic view at D in fig. 7.
Fig. 9 is a schematic perspective view of the entire filter plate.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1, 2 and 6, the oil-immersed transformer with the filter screen convenient to replace comprises a transformer body 5, a transformer shell 1 and a heat exchanger 4. The transformer housing 1 comprises a lower housing 11 and an upper housing 12 which are correspondingly arranged up and down. The transformer oil is injected into the lower shell 11, and the filter plate 3 is embedded in the accommodating space formed by the upper shell 12 and the lower shell 11 of the transformer shell 1. The transformer body 5 is fixed in the lower shell 11 and located on one side of the filter plate 3, a binding post (not shown in the figure) is further fixed on the outer side face of the lower shell 11, and a primary coil and a secondary coil of the transformer body 5 are both connected to the binding post. An oil inlet 113 for injecting the transformer oil into the transformer housing 1 may be disposed at one side of the upper end of the lower housing 11 or one side of the upper housing 12, and an oil outlet 112 for discharging the transformer oil from the transformer housing 1 may be disposed at the bottom of the lower housing 11, and ball valves may be disposed at the oil inlet 113 and the oil outlet 112, respectively, to open and close the same.
As shown in fig. 2, the heat exchanger 4 includes a heat exchanger housing 4 and a heat exchange tube 41, the heat exchanger housing 4 is fixedly connected to one side of the lower housing 11, and cooling water capable of being continuously refreshed is injected into the heat exchanger housing 41, the refreshing mode may be that the upper and lower ends of the heat exchanger housing 41 are connected to a circulation pipeline, a water pump and a condenser are connected to the middle of the circulation pipeline, water in the heat exchanger housing 41 is pumped out by the water pump to the condenser for cooling, and then flows back to the heat exchanger housing 41, so as to realize circulation refreshing of cold water. The heat exchange tube 42 is installed between the heat exchanger shell 41 and the lower shell 11 of the transformer shell 1 in a penetrating manner, the heat exchange tube 42 is a bent tube with a U-shaped structure, the bent section of the heat exchange tube 42 is located in the heat exchanger shell 41, two ports of the heat exchange tube 42 are located in the transformer shell 1, and one port is connected with the liquid pump 43. When the liquid pump 43 works, the transformer oil in the transformer housing 1 is pumped to the other end through one end of the heat exchange tube 42, and in the process, the transformer oil is subjected to heat exchange with the cooling water in the heat exchanger housing 41 through the bent section of the heat exchange tube 42, so that the cooling of the transformer oil is realized, the cooling efficiency of the transformer oil can be improved, and the temperature stability in the oil-immersed transformer can be effectively ensured.
As shown in fig. 2 and 3, flanges 6 are fixed to the outer edge of the opening of the lower casing 11 and the outer edge of the upper casing 12, during assembly, the flanges 6 of the upper casing 12 and the flanges 6 of the lower casing 11 are placed in a vertically corresponding manner, and then the flanges 6 of the upper casing 12 and the flanges 6 of the lower casing 11 are fixedly connected by screws 63 and 62 through bolts 62, so that the upper casing 12 and the lower casing 11 are vertically installed in a corresponding manner, and the transformer body 5 and the transformer oil are sealed in the accommodating space formed by the upper casing 12 and the lower casing 11. Further, a rubber sealing ring 64 is arranged between the flange 6 of the upper shell 12 and the flange 6 of the lower shell 11, and the sealing ring 64 is arranged at the joint position where the flange of the upper shell 12 is connected with the flange 6 of the lower shell 11 of the upper shell 12 and the lower shell 6, so that the joint of the upper shell 12 and the lower shell 11 can be sealed, and the transformer oil is prevented from leaking or contacting with air to volatilize a large amount.
As shown in fig. 2, 4, 5 and 9, the filter plate 3 includes a filter frame 31 and a filter screen 32, the filter frame 31 is a frame plate structure with a hollow center, the filter screen 32 covers the hollow part of the center of the filter frame 31, and the filter screen 32 is fixed to the filter frame 31 by means of a locking screw 37, and it is very convenient to detach the filter screen 32 by screwing out the screw 37. The surface of the filter screen 32 is further provided with a plurality of through holes 321, one end of each heat exchange tube 42, which is not connected with the liquid pump 43, respectively and correspondingly penetrates through the through holes 321, the structure can enable the liquid pump 43 to work to drive the transformer oil to flow in the transformer housing 1, the transformer oil 43 flows to the other side of the filter screen 32 through one side of the filter screen 32, so that impurities in the transformer oil are filtered and adsorbed by the filter screen 32, the performance of the transformer oil is prevented from being influenced, and the structure of the through holes 321 corresponding to the heat exchange tubes 42 can enable the heat exchange tubes 42 to automatically penetrate through the filter screen 32 after the filter plate 3 is integrally pushed in the. The upper end of the filter frame 31 is provided with a strip-shaped groove 311 penetrating through the two side faces, a connecting lug 34 is fixed on the filter frame 31 above the strip-shaped groove 311, a connecting hole 341 is arranged on the connecting lug 34, and a fixing bolt 35 is arranged in the connecting hole 341 in a penetrating manner. In addition, the two ends of the bottom of the filter frame 31 on the same side with the connecting lug 34 are both provided with limit rods 33.
As shown in fig. 2 and 4 to 9, a mounting groove 121 penetrating into the transformer housing 1 is formed on the top plane of the upper housing 12, the length of the mounting groove 121 is the same as the width of the filter frame 31 of the filter plate 3, embedded grooves 122 are vertically connected to two sides of the mounting groove 121 on the top plane of the transformer housing 1, the distance between the two embedded grooves 122 is slightly smaller than the length of the strip-shaped groove 311, a fixing nut 36 is fixed on the upper housing 12 between the two embedded grooves 122, the fixing nut 36 coaxially corresponds to the connecting hole 341 of the connecting lug 34, and the fixing nut 36 is screwed to the fixing bolt 35 of the connecting lug 34. The two embedded grooves 122 also respectively correspond to the two limiting rods 33 of the filter plate 3, the length of each limiting rod 33 is slightly smaller than that of the embedded groove 122, and the filter plate 3 can be vertically embedded into the transformer shell 1 from top to bottom by the aid of the structure of the installation grooves 121 and the embedded grooves 122 on the two sides. After the filter plate 3 is fitted, the filter plate 3 is pushed toward the fixing nut 36 along the fitting groove 122, so that the strip-shaped groove 311 of the filter frame 31 is engaged with a position between the two fitting grooves 122 of the upper case. In addition, both sides of the bottom surface in the lower shell 11 are provided with limiting grooves 111, the limiting grooves 111 may be formed by fixing a hollow pipe at the side of the bottom of the lower shell 11, the front ends of the notches of the limiting grooves 111 are aligned with the rear ends of the embedded grooves 122, and the limiting rods 33 may be round rods which can be embedded into the hollow pipe in a matching manner. After the filter plate 3 is pushed, the limiting rod 33 can be embedded into the limiting groove 111, so that the lower end of the filter plate 3 is limited, and the filter plate 3 is prevented from swinging towards the two side surfaces of the filter plate integrally; after the filter plate 3 is pushed, the fixing bolts 35 need to pass through the connecting holes 341 of the connecting lugs 34 and be screwed with the fixing nuts 36, so that the filter plate 3 can be integrally fixed.
As shown in fig. 1 to 3 and 6, a protective cover 2 is further fixed on the top of the transformer housing 1, and the protective cover 2 is provided with a concave accommodating cavity. The connection mode of the lower casing 11 and the upper casing 12 is the same, the flange 6 is fixed on the outer edge of the top plane of the upper casing 12 and the outer edge of the bottom opening of the protective cover 22, the sealing ring 64 is also arranged between the flange 6 of the upper casing 11 and the flange 6 of the protective cover 2, and then the flange 6 of the upper casing 12 and the flange 6 of the protective cover 2 are fixedly connected through the penetrating bolt 62 and the nut 63, so that the mounting groove 121, the embedded groove 122 and the filter plate 3 can be covered by the protective cover 2, and the protective cover 2 and the transformer casing 1 form a complete closed accommodating space. When the filter screen of filter 3 needs to be changed, only need dismantle behind the protection casing 2, screw out fixing bolt 62, push out filter 3 is reverse again, can upwards take out filter 3 and change filter screen 32, and is very convenient.
The above-mentioned be the utility model discloses a concrete implementation way, nevertheless the utility model discloses a design concept is not limited to this, and the ordinary use of this design is right the utility model discloses carry out immaterial change, all should belong to the act of infringement the protection scope of the utility model.
Claims (9)
1. The utility model provides a conveniently change oil-immersed transformer of filter screen, including transformer body and transformer housing, the inside transformer oil that has poured into of transformer housing still has inlayed the filter in the transformer housing, the transformer body is fixed in just be located in the transformer housing filter one side, its characterized in that: the filter plate comprises a filter frame and a filter screen, the center of the filter frame is hollow, the filter screen covers the center of the filter frame, a strip-shaped groove penetrating through two sides is formed in the upper end of the filter frame, a connecting lug is fixed on the filter frame above the strip-shaped groove, and the connecting lug is detachably fixed on the transformer shell; the top plane of the transformer shell is provided with a mounting groove penetrating into the transformer shell, the length of the mounting groove is consistent with the width of the filter plate, embedded grooves are vertically connected to the two sides of the mounting groove on the top plane of the transformer shell, and the distance between the two embedded grooves is slightly smaller than the length of the strip-shaped groove; the top of the transformer shell is also fixed with a protective cover, and the protective cover covers the mounting groove, the embedded groove and the filter plate.
2. The oil-immersed transformer with the filter screen convenient to replace according to claim 1, is characterized in that: still including the heat exchanger, the heat exchanger is including heat exchanger shell and heat exchange tube, heat exchanger shell fixed connection connect in transformer shell one side, and the inside cooling water of annotating of heat exchanger shell can constantly update, the heat exchange tube is the return bend, and the bend section of heat exchange tube is located the heat exchanger, and heat exchange tube both ends mouth all is located the transformer shell, and the drawing liquid pump is connected to one of them port.
3. The oil-immersed transformer with the filter screen convenient to replace according to claim 2, is characterized in that: the surface of the filter screen is provided with a plurality of through holes, and one end of each heat exchange tube, which is not connected with the liquid pump, correspondingly penetrates through the through holes respectively.
4. The oil-immersed transformer with the filter screen convenient to replace according to claim 1, is characterized in that: the transformer shell comprises a lower shell and an upper shell, the upper shell and the lower shell are installed in a vertically corresponding mode, the mounting groove and the embedded groove are formed in the top face of the upper shell, and transformer oil is contained in the lower shell.
5. The oil-immersed transformer with the filter screen convenient to replace according to claim 4, is characterized in that: the outer edge of the opening of the lower shell and the outer edge of the upper shell are both fixed with flanges, a sealing ring is arranged between the flange of the upper shell and the flange of the lower shell, and the flange of the upper shell and the flange of the lower shell are fixedly connected through a penetrating bolt.
6. The oil-immersed transformer with the filter screen convenient to replace according to claim 1, is characterized in that: the transformer shell is characterized in that limiting grooves are formed in two sides of the bottom surface in the transformer shell, the front ends of notches of the limiting grooves are aligned with the rear ends of the embedded grooves, limiting rods are arranged at two ends of one side of the bottom of the filter plate, and the limiting rods are correspondingly embedded into the limiting grooves respectively.
7. The oil-immersed transformer with the filter screen convenient to replace according to claim 6, is characterized in that: the length of the limiting rod is slightly smaller than that of the embedded groove.
8. The oil-immersed transformer with the filter screen convenient to replace according to claim 4, is characterized in that: the outer edge of the top plane of the upper shell and the outer edge of the bottom opening of the protective cover are both fixed with flanges, a sealing ring is arranged between the flange of the upper shell and the flange of the protective cover, and the flange of the upper shell and the flange of the lower shell are fixedly connected through a penetrating bolt.
9. The oil-immersed transformer with the filter screen convenient to replace according to claim 4, is characterized in that: the filter frame is fixed with the engaging lug in the top in bar groove, is equipped with the connecting hole on this engaging lug, and the connecting hole wears to be equipped with fixing bolt, go up the casing and be fixed with fixation nut on the position between two embedded grooves, fixation nut with the connecting hole coaxial core of engaging lug corresponds to fixing nut and the fixing bolt adapter coupling of engaging lug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922390350.4U CN211427993U (en) | 2019-12-27 | 2019-12-27 | Oil-immersed transformer with filter screen convenient to replace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922390350.4U CN211427993U (en) | 2019-12-27 | 2019-12-27 | Oil-immersed transformer with filter screen convenient to replace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211427993U true CN211427993U (en) | 2020-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922390350.4U Expired - Fee Related CN211427993U (en) | 2019-12-27 | 2019-12-27 | Oil-immersed transformer with filter screen convenient to replace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211427993U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113539628A (en) * | 2021-07-13 | 2021-10-22 | 廖冰冰 | Auxiliary device for accelerating cooling of transformer of polycrystalline silicon reduction furnace |
-
2019
- 2019-12-27 CN CN201922390350.4U patent/CN211427993U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113539628A (en) * | 2021-07-13 | 2021-10-22 | 廖冰冰 | Auxiliary device for accelerating cooling of transformer of polycrystalline silicon reduction furnace |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200904 |
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| CF01 | Termination of patent right due to non-payment of annual fee |