An oil-immersed transformer with transformer oil filtering function

Abstract

The present invention belongs to the field of filtering technology, and specifically relates to an oil-immersed transformer with the function of filtering transformer oil, including a mounting frame, a storage portion is arranged on the upper part of the mounting frame, and a filter portion is arranged inside the storage portion: unused filter portions are stacked and placed through the storage portion, and the filter portion can be pushed and pulled out, and the position is changed by pushing the filter portion, so that the filter portion can enter a docking state and a falling state; a docking portion is arranged on one side of the storage portion, and the docking portion cooperates with the interface end of the filter portion, and when the filter portion is pushed to the docking state, the filter portion contacts the docking portion, so that the insides of the two are connected, and the oil immersion inside the transformer is pumped to the inside of the filter portion for filtering through the docking portion. The invention switches and discharges multiple stacked filter portions to achieve automatic replacement, thereby ensuring the quality of the oil immersion inside the transformer and ensuring the normal operation of the transformer.

Description

Technical Field

[0001] The invention belongs to the technical field of filtering, and in particular relates to an oil-immersed transformer with the function of filtering transformer oil. Background Art

[0002] A transformer is an electrical engineering device that adjusts voltage through the principle of electromagnetic induction. During use, a large amount of current will pass through the windings inside the transformer, thereby generating a large amount of heat. In order to improve the safety and service life of the windings, the windings need to be immersed in insulating oil in the transformer casing to effectively control the winding temperature. However, there are still some problems with existing transformers.

[0003] At present, the chosen coping method for the above-mentioned problem is to filter the transformer oil by adding a filter device. However, in actual application, as the use time increases, the filtered impurities are easy to accumulate, which in turn causes the filter cartridge to become blocked. Therefore, it is necessary to replace the filter cartridge according to actual use. In response to this problem, some transformers currently have two filter cartridges. By setting up a spare filter cartridge, the use time is increased, but it only extends a certain maintenance cycle, and the use effect still has great limitations. Summary of the invention

[0004] The purpose of the present invention is to provide an oil-immersed transformer with the function of filtering transformer oil, which can switch and discharge a plurality of stacked filter parts to achieve automatic replacement, thereby ensuring the quality of the oil immersed inside the transformer and ensuring the normal operation of the transformer.

[0005] The technical solution adopted by the present invention is as follows:

[0006] An oil-immersed transformer with a function of filtering transformer oil comprises a mounting frame, a storage portion is arranged on the upper part of the mounting frame, and a filter portion is arranged inside the storage portion:

[0007] The unused filter parts are stacked and placed by the storage part, and the filter parts can be pushed and pulled out, and the position of the filter parts can be changed by pushing the filter parts, so that the filter parts can enter the docking state and the falling state;

[0008] A docking portion is provided on one side of the storage portion, and the docking portion cooperates with the interface end of the filter portion. When the filter portion is pushed to the docking state, the filter portion contacts the docking portion, so that the interiors of the two are connected, and the oil immersion pump inside the transformer is pumped to the interior of the filter portion for filtration through the docking portion;

[0009] The filter portion includes a filter housing, an oil inlet pipe, an oil drain plate, a baffle, an elastic extrusion piece, a closing block, a closing ring, an elastic recovery piece and a filter material, the filter housing being arranged inside the storage portion, one end of the oil inlet pipe being fixedly connected to one end inside the filter housing, the oil drain plate being fixedly arranged at the other end inside the filter housing, and the interior of the oil drain plate being fixedly connected to the outer edge of the oil inlet pipe, the baffle plate being slidably arranged at the outer edge of the oil inlet pipe, and one side of the baffle plate being matched with the interior of the oil drain plate, the elastic extrusion piece being arranged between the baffle plate and the oil inlet pipe, the closing block being slidably arranged inside the other end of the oil inlet pipe, the closing ring being fixedly arranged at the oil inlet port of the oil inlet pipe, and the interior of the closing ring being matched with one side of the closing block, the elastic recovery piece being arranged between the closing block and the oil inlet pipe, and the filter material being filled inside the filter housing and the oil inlet pipe.

[0010] In a preferred solution, a guide hole penetrating inside and outside of the oil inlet pipe is opened at one end of the oil inlet pipe, and the guide hole matches with one end inside the filter housing.

[0011] In a preferred embodiment, the storage portion includes a stacking bin, a guide plate, a switching plate, a sliding cylinder, an extrusion plate, an elastic pushing member, an extrusion cylinder and a storage bin, the stacking bin is fixedly connected to the mounting frame, the guide plate is fixedly arranged inside the stacking bin, and the inside of the guide plate cooperates with the external aid of the filter housing, the switching plate is slidably arranged inside the lower end of the stacking bin, and the switching plate is horizontally matched with the docking portion, one end of the sliding cylinder is fixedly connected to one end of the switching plate, the extrusion plate is slidably arranged inside the extrusion plate, the elastic pushing member is arranged between the sliding cylinder and the extrusion plate, the output end of the extrusion cylinder is fixedly connected to the extrusion plate, and the storage bin is fixedly arranged at the lower end of the stacking bin.

[0012] In a preferred embodiment, a stacking guide groove and a discharge guide groove are provided inside the guide plate. The stacking guide groove is provided at the upper part of the guide plate to cooperate with the outer edge of the unused filter part, and the discharge guide groove is provided at the lower part of the guide plate to cooperate with the outer edge of the used filter part. The stacking guide groove and the discharge guide groove are vertically staggered.

[0013] In a preferred solution, a pushing groove is provided inside the switching plate, and the pushing groove cooperates with the stacking guide groove and the discharge guide groove.

[0014] In a preferred embodiment, the docking part includes a discharge pipe, a docking plate, an inlet column, a pumping pipe, an oil pump, a sealing plate seat and an elastic sealing member. The discharge pipe is fixedly connected to the mounting frame, the docking plate is fixedly arranged at one end of the discharge pipe, the docking plate cooperates with the filter part, one end of the pumping pipe is fixedly connected to the middle part of the docking plate, and the other end of the pumping pipe passes through the interior of the discharge pipe, the output end of the oil pump is fixedly connected to the other end of the pumping pipe, the input end of the oil pump is arranged in the transformer, the sealing plate seat cooperates with the other side of the docking plate, and the sealing plate seat is slidably connected to the other end of the docking plate, and the elastic sealing member is arranged between the sealing plate seat and the docking plate.

[0015] In a preferred embodiment, a pressure column is integrally formed on one side of the sealing disc seat, the pressure column is slidably connected to the inside of the docking disc, and the pressure column cooperates with the baffle.

[0016] In a preferred embodiment, an annular oil drainage groove is provided inside the oil drainage plate, and the inside of the annular oil drainage groove cooperates with the top pressure column.

[0017] In a preferred solution, an oil passage groove is provided inside one end of the docking plate, and the oil passage groove cooperates with the oil drainage groove of the oil drainage plate.

[0018] In a preferred solution, an inlet groove is provided inside the inlet column, and the inlet groove matches with the inside of the oil inlet pipe.

[0019] The technical effects achieved by the present invention are:

[0020] The present invention adopts the design of the storage part, and drives the extrusion plate to move through the output end of the extrusion cylinder, so that the extrusion plate can move horizontally by squeezing the sliding cylinder through the elastic pushing member, and then the switching plate moves together with the sliding cylinder, so that the switching plate can perform linkage operations of loading, docking and discharging the filter part inside the storage part;

[0021] The present invention adopts a design of a filter part. When the filter part is not connected to the docking part, the interior of the filter part is in a closed state, which can protect the internal filter material from external pollution and reduce the filtering effect; when the filter part is connected to the docking part, the interiors of the two can be connected through extrusion and docking of both parties, so that the oil immersed in the filter part forms a U-shaped flow path inside the oil inlet pipe and the filter housing, thereby increasing the filtering time of the immersed oil and improving the filtering effect;

[0022] The present invention adopts the design of the docking part, and the elastic sealing part is arranged between the sealing disk seat and the docking disk. The sealing disk seat is always squeezed by the elastic sealing part, so that the sealing disk seat can be in contact with the docking disk when not squeezed, so as to seal the docking disk and prevent the oil immersion inside the transformer from being contaminated by the outside; when the sealing disk seat is squeezed, the baffle plate has shrunk to the maximum distance and is limited to stop moving. At this time, the sealing disk seat is squeezed by the baffle plate and moves to squeeze the elastic sealing part, so that the sealing disk seat is separated from the interior of the docking disk, so that the interior of the docking disk is opened and connected with the interior of the filter part. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention;

[0024] Figure 2 It is a partial structural schematic diagram of the present invention;

[0025] Figure 3 It is a partial structural exploded diagram of the present invention;

[0026] Figure 4 is a schematic diagram of the initial state of the switching board of the present invention;

[0027] Figure 5 It is a schematic diagram of the extended pushing state of the switching plate of the present invention;

[0028] Figure 6 It is a schematic diagram of the switching plate of the present invention in a retracted and discharged state;

[0029] Figure 7 is a cross-sectional view of the filter portion and the docking portion of the present invention;

[0030] Figure 8 It is an exploded view of the filter unit of the present invention.

[0031] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0032] 1. Mounting frame; 2. Storage part; 201. Stacking bin; 202. Guide plate; 2021. Stacking guide groove; 2022. Discharge guide groove; 203. Switching plate; 2031. Pushing groove; 204. Sliding cylinder; 205. Extrusion plate; 206. Elastic pushing member; 207. Extrusion cylinder; 208. Storage bin; 3. Filter part; 301. Filter housing; 302. Oil inlet pipe; 303. Oil discharge plate; 304. Baffle plate; 305. Elastic extrusion member; 306. Closing block; 307. Closing ring; 308. Elastic recovery member; 309. Filter material; 4. Docking part; 401. Discharge pipe; 402. Docking plate; 403. Inlet column; 404. Pumping pipe; 405. Oil pump; 406. Sealing plate seat; 4061. Top pressure column; 407. Elastic sealing member. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0034] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0035] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The phrase "in a preferred embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0036] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0037] See also Figures 1 to 8 As shown, the present invention provides an oil-immersed transformer with a function of filtering transformer oil, comprising a mounting frame 1, a receiving portion 2 is provided on the upper portion of the mounting frame 1, and a filter portion 3 is provided inside the receiving portion 2:

[0038] The unused filter parts 3 are stacked and placed through the storage part 2, and the filter parts 3 can be pushed and pulled out, and the position of the filter parts 3 can be changed by pushing the filter parts 3, so that the filter parts 3 can enter the docking state and the falling state;

[0039] A docking portion 4 is provided on one side of the storage portion 2, and the docking portion 4 cooperates with the interface end of the filter portion 3. When the filter portion 3 is pushed to the docking state, the filter portion 3 contacts the docking portion 4, so that the interiors of the two are connected, and the oil immersion pump inside the transformer is pumped to the interior of the filter portion 3 through the docking portion 4 for filtration;

[0040] The filter unit 3 includes a filter housing 301, an oil inlet pipe 302, an oil drain plate 303, a baffle plate 304, an elastic extrusion member 305, a closing block 306, a closing ring 307, an elastic recovery member 308 and a filter material 309. The filter housing 301 is arranged inside the storage unit 2, one end of the oil inlet pipe 302 is fixedly connected to one end of the inside of the filter housing 301, the oil drain plate 303 is fixedly arranged at the other end of the inside of the filter housing 301, and the inside of the oil drain plate 303 is fixedly connected to the outer edge of the oil inlet pipe 302, and the baffle plate 304 is slidably arranged on the inside of the oil inlet pipe 302. The outer edge of the oil pipe 302, and one side of the baffle plate 304 cooperates with the inside of the oil drain plate 303, the elastic extrusion member 305 is arranged between the baffle plate 304 and the oil inlet pipe 302, the closing block 306 is slidably arranged inside the other end of the oil inlet pipe 302, the closing ring 307 is fixedly arranged at the oil inlet port of the oil inlet pipe 302, and the inside of the closing ring 307 cooperates with one side of the closing block 306, the elastic recovery member 308 is arranged between the closing block 306 and the oil inlet pipe 302, and the filter material 309 is filled in the inside of the filter housing 301 and the oil inlet pipe 302.

[0041] Specifically, the mounting frame 1 is fixed to one side of the transformer by bolts, the docking portion 4 is connected to the oil immersion inside the transformer by a pipeline, and then a plurality of unused filter portions 3 are placed inside the storage portion 2, and then the filter portion 3 at the bottom and matched with the docking portion 4 is pushed through the storage portion 2. At this time, the interior of the filter portion 3 and the interior of the docking portion 4 are both in a closed state. This stage is used as the initial stage. When the filter portion 3 is in a closed state, it can protect the internal filter material 309 from external pollution and reduce the filtering effect;

[0042] When the filter housing 301 is squeezed and pushed toward the docking portion 4 by the receiving portion 2, the docking end of the filter housing 301 contacts the docking portion 4. At this time, the docking portion 4 can squeeze the corresponding baffle 304 and the closing block 306, so that the baffle 304 squeezes the elastic extrusion member 305 to shrink and enter the interior of the filter housing 301, and the closing block 306 squeezes the elastic recovery member 308 to shrink and enter the interior of the oil inlet pipe 302, thereby making the oil inlet pipe 302 and the interior of the filter housing 301 connected with the interior of the docking portion 4, and then the immersed oil in the transformer is pumped into the interior of the filter housing 301 through the oil inlet pipe 302 through the docking portion 4. The immersed oil pumped into the filter housing 301 and the oil inlet pipe 302 is purified and filtered through the filter material 309, and then the filtered immersed oil is discharged into the interior of the docking portion 4 through the oil discharge plate 303 and then discharged into the interior of the transformer again, thereby completing the circulation filtration of the transformer immersed oil;

[0043] When the filter part 3 needs to be replaced after a long time, the storage part 2 pulls the filter part 3 in the docking state, so that the filter part 3 is separated from the docking part 4. At this time, the baffle plate 304 is squeezed by the elastic extrusion member 305 and is stuck in the interior of the oil drain plate 303 for sealing. At the same time, the sealing block 306 is squeezed by the elastic recovery member 308 and is stuck in the interior of the sealing ring 307 for sealing. At this time, the interior of the filter part 3 is in a closed state to prevent the residual immersion oil in the filter part 3 from leaking. At the same time, the docking part 4 loses the squeezing of the filter part 3 and enters a closed state. One side of the docking part 4 is isolated from the contact between the interior of the docking part 4 and the external environment, so as to prevent the internal immersion oil from being contaminated by the external environment.

[0044] As the storage part 2 continues to pull the filter part 3, the filter part 3 enters the discharge position of the storage part 2. At this time, the filter part 3 falls downward inside the storage part 2 under the influence of gravity, and the discharge of the used filter part 3 is completed.

[0045] Then the storage part 2 is pushed to the initial position, at which time the stacked filter parts 3 move downward under the action of gravity and enter the pushing position of the storage part 2, completing the loading of the filter parts 3, and at this time the entire device is in the initial state.

[0046] See also Figure 7 As shown, one end of the oil inlet pipe 302 is provided with a guide hole that penetrates inside and outside the oil inlet pipe 302, and the guide hole cooperates with one end inside the filter housing 301, so that the immersed oil discharged from the inside of the oil inlet pipe 302 can be discharged deep inside the filter housing 301, and then the immersed oil flows through the filter material 309 to the other end of the filter housing 301 and flows out, so that the immersed oil forms a U-shaped flow path inside the oil inlet pipe 302 and the filter housing 301, thereby increasing the filtering time of the immersed oil and improving the filtering effect.

[0047] See also Figures 1 to 6 As shown, the storage part 2 includes a stacking bin 201, a guide plate 202, a switching plate 203, a sliding cylinder 204, an extrusion plate 205, an elastic pusher 206, an extrusion cylinder 207 and a storage bin 208. The stacking bin 201 is fixedly connected to the mounting frame 1, and a vertical stacking space is provided for the stacking of the filter part 3 through the stacking bin 201. The guide plate 202 is fixedly arranged inside the stacking bin 201, and the inside of the guide plate 202 cooperates with the outer aid of the filter housing 301, and the filter part 3 is provided through the guide plate 202. The switching plate 203 is slidably arranged inside the lower end of the stacking bin 201, and the switching plate 203 is horizontally matched with the docking portion 4. One end of the sliding cylinder 204 is fixedly connected to one end of the switching plate 203. The extrusion plate 205 is slidably arranged inside the extrusion plate 205. The elastic pushing member 206 is arranged between the sliding cylinder 204 and the extrusion plate 205. The output end of the extrusion cylinder 207 is fixedly connected to the extrusion plate 205. The storage bin 208 is fixedly arranged at the lower end of the stacking bin 201.

[0048] The output end of the extrusion cylinder 207 drives the extrusion plate 205 to move, so that the extrusion plate 205 can squeeze the sliding cylinder 204 through the elastic pushing member 206 to move horizontally, thereby causing the switching plate 203 to move together with the sliding cylinder 204.

[0049] There are three states of movement of the output end of the extrusion cylinder 207:

[0050] The first is that the output end of the extrusion cylinder 207 is in the initial state, and the interior of the switching plate 203 is loaded with an unused filter part 3;

[0051] The second type is that the output end of the extrusion cylinder 207 is extended, and at this time the switching plate 203 drives the filter part 3 to move toward the docking part 4, and the filter part 3 is connected to the docking part 4. At this time, the output end of the extrusion cylinder 207 continues to extend and move, so that the output end of the extrusion cylinder 207 squeezes the extrusion plate 205, so that the extrusion plate 205 squeezes the elastic pushing member 206 to contract, so that the elastic pushing member 206 at this time always applies pressure to the switching plate 203, so that the switching plate 203 can apply more pressure to the filter part 3, so that the docking of the filter part 3 and the docking part 4 is tighter.

[0052] The third type is that the extrusion cylinder 207 is in the initial state, and the output end of the extrusion cylinder 207 contracts to drive the extrusion plate 205 to move, and the sliding cylinder 204 is driven to move by the extrusion plate 205, so that the switching plate 203 drives the filter part 3 to move in the direction of the extrusion cylinder 207, so that the switching plate 203 drives the filter part 3 to enter the upper part of the storage bin 208. At this time, the filter part 3 falls off from the inside of the switching plate 203 to the inside of the storage bin 208 due to the influence of gravity.

[0053] See also Figures 3 to 6 As shown, a stacking guide groove 2021 and a discharge guide groove 2022 are provided inside the guide plate 202. The stacking guide groove 2021 is provided at the upper part of the guide plate 202 to match the outer edge of the unused filter part 3. The stacking guide groove 2021 provides guidance and limitation for the vertical stacking of the filter part 3 to ensure the position of the filter part 3. The discharge guide groove 2022 is provided at the lower part of the guide plate 202 to match the outer edge of the used filter part 3. The upper end of the discharge guide groove 2022 matches the outer edge of the filter part 3, so that the filter part 3 inside the stacking guide groove 2021 falls through the inside of the switching plate 203, so that the lower end of the filter part 3 is limited by the upper end of the discharge guide groove 2022, so as to prevent the filter part 3 from continuing to move downward, so that the filter part 3 is always inside the switching plate 203.

[0054] Since the stacking guide groove 2021 and the discharge guide groove 2022 are vertically staggered, when the used filter part 3 is driven to the discharge guide groove 2022 by the switching plate 203 , the filter part 3 moves downward along the inside of the discharge guide groove 2022 under the influence of gravity.

[0055] See also Figures 3 to 6 As shown, a push groove 2031 is provided inside the switching plate 203, and the upper part of the switching plate 203 cooperates with the outer edge of the filter part 3, so that when the switching plate 203 is located inside the stacking guide groove 2021 and the discharge guide groove 2022 and docking, the upper end of the switching plate 203 can support the upper filter part 3 to prevent the upper filter part 3 from falling, and the push groove 2031 cooperates with the stacking guide groove 2021 and the discharge guide groove 2022. When the switching plate 203 moves, the interior of the push groove 2031 can be switched with the interior of the stacking guide groove 2021 and the discharge guide groove 2022, so that the switching plate 203 can drive the internal filter part 3 to extend and dock and retract and discharge.

[0056] See also Figure 7 and Figure 8 As shown, the docking part 4 includes a discharge pipe 401, a docking plate 402, an inlet column 403, a pumping pipe 404, an oil pump 405, a sealing plate seat 406 and an elastic sealing member 407. The discharge pipe 401 is fixedly connected to the mounting frame 1, and the docking plate 402 is fixedly arranged at one end of the discharge pipe 401. The docking plate 402 cooperates with the filter part 3, and the docking of the two is completed through the contact between the filter part 3 and the docking plate 402. One end of the pumping pipe 404 is fixedly connected to the middle part of the docking plate 402, and the other end of the pumping pipe 404 passes through the interior of the discharge pipe 401. The output end of the oil pump 405 is fixedly connected to the other end of the pumping pipe 404. The input end is arranged inside the transformer, and the immersed oil in the transformer is pumped to the pumping pipe 404 through the oil delivery pump 405, and the immersed oil is guided to the inside of the inlet column 403 through the pumping pipe 404 and discharged to the inside of the filter part 3, the sealing disc seat 406 is matched with the other side of the docking disc 402, and the sealing disc seat 406 is slidably connected with the other end of the docking disc 402, and the elastic sealing member 407 is arranged between the sealing disc seat 406 and the docking disc 402, and the sealing disc seat 406 is always squeezed by the elastic sealing member 407, so that the sealing disc seat 406 can be in contact with the docking disc 402 when it is not squeezed, so as to seal the docking disc 402;

[0057] When the sealing disc seat 406 is squeezed, the baffle plate 304 has shrunk to the maximum distance and is limited to stop moving. At this time, the sealing disc seat 406 is squeezed by the baffle plate 304 and moves to squeeze the elastic sealing member 407, so that the sealing disc seat 406 is separated from the interior of the docking disc 402, so that the interior of the docking disc 402 is opened and connected to the interior of the filter part 3.

[0058] See also Figure 7 and Figure 8 As shown, a pressure column 4061 is integrally formed on one side of the closing disk seat 406, and the pressure column 4061 is slidably connected to the inside of the docking disk 402. The pressure column 4061 provides a limit and guide for the movement of the closing disk seat 406. The pressure column 4061 cooperates with the baffle plate 304, and the pressure column 4061 provides a limit support between the closing disk seat 406 and the baffle plate 304, thereby ensuring the connection between the closing disk seat 406 and the baffle plate 304.

[0059] See also Figure 7 and Figure 8 As shown, an annular oil drainage groove is provided inside the oil drainage plate 303, and the inside of the annular oil drainage groove cooperates with the top pressure column 4061. Through the annular oil drainage groove, the butt end of the filter housing 301 can always cooperate with the top pressure column 4061 regardless of the horizontal rotation angle of the filter housing 301.

[0060] See also Figure 7 and Figure 8 As shown, an oil groove is provided inside one end of the docking plate 402, and the oil groove cooperates with the oil drain groove of the oil drain plate 303. The oil groove and the oil drain groove are connected through the cooperation to ensure that the docking part 4 and the filtering part 3 are in the docking state and the filtered and immersed oil is discharged normally.

[0061] See also Figure 7 and Figure 8 As shown, an inlet groove is provided inside the inlet column 403, and the inlet groove cooperates with the inside of the oil inlet pipe 302, so that during the docking process between the inlet column 403 and the filter part 3, not only can the closing block 306 be squeezed to open it, but the pumped immersion oil can also be directly passed into the filter part 3 for filtration, thereby improving the pumping efficiency.

[0062] The working principle of the present invention is as follows: the mounting frame 1 is fixed to one side of the transformer by bolts, the docking part 4 is connected to the oil immersed inside the transformer by a pipeline, and then a plurality of unused filter parts 3 are placed inside the storage part 2, and then the filter part 3 at the bottom and matched with the docking part 4 is pushed through the storage part 2. At this time, the inside of the filter part 3 and the inside of the docking part 4 are both in a closed state. This stage is used as the initial stage. When the filter part 3 is in a closed state, it can protect the internal filter material 309 from external pollution and reduce the filtering effect.

[0063] When the filter housing 301 is squeezed and pushed toward the docking portion 4 by the receiving portion 2, the docking end of the filter housing 301 contacts the docking portion 4. At this time, the docking portion 4 can squeeze the corresponding baffle 304 and the closing block 306, so that the baffle 304 squeezes the elastic extrusion member 305 to shrink and enter the interior of the filter housing 301, and the closing block 306 squeezes the elastic recovery member 308 to shrink and enter the interior of the oil inlet pipe 302, thereby making the oil inlet pipe 302 and the interior of the filter housing 301 connected with the interior of the docking portion 4, and then the immersed oil in the transformer is pumped into the interior of the filter housing 301 through the oil inlet pipe 302 through the docking portion 4. The immersed oil pumped into the filter housing 301 and the oil inlet pipe 302 is purified and filtered through the filter material 309, and then the filtered immersed oil is discharged into the interior of the docking portion 4 through the oil discharge plate 303 and then discharged into the interior of the transformer again, thereby completing the circulation filtration of the transformer immersed oil;

[0064] When the filter part 3 needs to be replaced after a long time, the storage part 2 pulls the filter part 3 in the docking state, so that the filter part 3 is separated from the docking part 4. At this time, the baffle plate 304 is squeezed by the elastic extrusion member 305 and is stuck in the interior of the oil drain plate 303 for sealing. At the same time, the sealing block 306 is squeezed by the elastic recovery member 308 and is stuck in the interior of the sealing ring 307 for sealing. At this time, the interior of the filter part 3 is in a closed state to prevent the residual immersion oil in the filter part 3 from leaking. At the same time, the docking part 4 loses the squeezing of the filter part 3 and enters a closed state. One side of the docking part 4 is isolated from the contact between the interior of the docking part 4 and the external environment, so as to prevent the internal immersion oil from being contaminated by the external environment.

[0065] As the storage part 2 continues to pull the filter part 3, the filter part 3 enters the discharge position of the storage part 2. At this time, the filter part 3 falls downward inside the storage part 2 under the influence of gravity, and the discharge of the used filter part 3 is completed.

[0066] Then the storage part 2 is pushed to the initial position, at which time the stacked filter parts 3 move downward under the action of gravity and enter the pushing position of the storage part 2, completing the loading of the filter parts 3, and at this time the entire device is in the initial state.

[0067] The above is only a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the art unless otherwise specified and limited.

Claims

1. An oil-immersed transformer with the function of filtering transformer oil, characterized in that: It comprises a mounting frame (1), a storage portion (2) is arranged on the upper part of the mounting frame (1), and a filter portion (3) is arranged inside the storage portion (2): The unused filter parts (3) are stacked and placed by the storage part (2), and the filter parts (3) can be pushed and pulled out, and the position of the filter parts (3) can be changed by pushing the filter parts (3), so that the filter parts (3) can enter a docking state and a falling state; A docking portion (4) is provided on one side of the storage portion (2), and the docking portion (4) cooperates with the interface end of the filter portion (3). When the filter portion (3) is pushed to the docking state, the filter portion (3) and the docking portion (4) are in contact, so that the interiors of the two are connected, and the oil immersion pump inside the transformer is pumped to the interior of the filter portion (3) through the docking portion (4) for filtering; The filter portion (3) comprises a filter housing (301), an oil inlet pipe (302), an oil drain plate (303), a baffle plate (304), an elastic extrusion member (305), a sealing block (306), a sealing ring (307), an elastic recovery member (308) and a filter material (309); the filter housing (301) is arranged inside the storage portion (2); one end of the oil inlet pipe (302) is fixedly connected to one end inside the filter housing (301); the oil drain plate (303) is fixedly arranged at the other end inside the filter housing (301); the inside of the oil drain plate (303) is fixedly connected to the outer edge of the oil inlet pipe (302); the baffle plate (304) is slidably arranged inside the inlet pipe (302); The outer edge of the oil pipe (302), and one side of the baffle plate (304) matches with the inside of the oil drain plate (303), the elastic extrusion member (305) is arranged between the baffle plate (304) and the oil inlet pipe (302), the closing block (306) is slidably arranged inside the other end of the oil inlet pipe (302), the closing ring (307) is fixedly arranged at the oil inlet port of the oil inlet pipe (302), and the inside of the closing ring (307) matches with one side of the closing block (306), the elastic recovery member (308) is arranged between the closing block (306) and the oil inlet pipe (302), and the filter material (309) is filled in the inside of the filter housing (301) and the oil inlet pipe (302); The storage portion (2) comprises a stacking bin (201), a guide plate (202), a switching plate (203), a sliding cylinder (204), an extrusion plate (205), an elastic pushing member (206), an extrusion cylinder (207) and a storage bin (208); the stacking bin (201) is fixedly connected to the mounting frame (1); the guide plate (202) is fixedly arranged inside the stacking bin (201), and the inside of the guide plate (202) matches the outer edge of the filter housing (301); the switching plate (203) is slidably arranged inside the stacking bin The switching plate (203) and the docking portion (4) are arranged inside the lower end of the stacking bin (201), and the switching plate (203) is matched with the docking portion (4) in a horizontal manner. One end of the sliding cylinder (204) is fixedly connected to one end of the switching plate (203). The extrusion plate (205) is slidably arranged inside the extrusion plate (205). The elastic pushing member (206) is arranged between the sliding cylinder (204) and the extrusion plate (205). The output end of the extrusion cylinder (207) is fixedly connected to the extrusion plate (205). The storage bin (208) is fixedly arranged at the lower end of the stacking bin (201).

2. The oil-immersed transformer with transformer oil filtering function according to claim 1, characterized in that: One end of the oil inlet pipe (302) is provided with a guide hole that penetrates inside and outside the oil inlet pipe (302), and the guide hole matches one end inside the filter housing (301).

3. The oil-immersed transformer with transformer oil filtering function according to claim 1, characterized in that: The guide plate (202) is provided with a stacking guide groove (2021) and a discharge guide groove (2022) inside. The stacking guide groove (2021) is provided at the upper part of the guide plate (202) and matches with the outer edge of the unused filter part (3). The discharge guide groove (2022) is provided at the lower part of the guide plate (202) and matches with the outer edge of the used filter part (3). The stacking guide groove (2021) and the discharge guide groove (2022) are vertically staggered.

4. The oil-immersed transformer with transformer oil filtering function according to claim 1, characterized in that: A pushing groove (2031) is provided inside the switching plate (203), and the pushing groove (2031) cooperates with the stacking guide groove (2021) and the discharge guide groove (2022).

5. The oil-immersed transformer with transformer oil filtering function according to claim 1, characterized in that: The docking portion (4) comprises a discharge pipe (401), a docking plate (402), an inlet column (403), a pumping pipe (404), an oil pump (405), a sealing plate seat (406) and an elastic sealing member (407); the discharge pipe (401) is fixedly connected to the mounting frame (1); the docking plate (402) is fixedly arranged at one end of the discharge pipe (401); the docking plate (402) cooperates with the filter portion (3); one end of the pumping pipe (404) is fixedly connected to the middle of the docking plate (402); The oil delivery pump (405) is connected to the other end of the docking plate (402), and the other end of the pumping pipe (404) passes through the interior of the discharge pipe (401); the output end of the oil delivery pump (405) is fixedly connected to the other end of the pumping pipe (404); the input end of the oil delivery pump (405) is arranged inside the transformer; the sealing plate seat (406) cooperates with the other side of the docking plate (402), and the sealing plate seat (406) is slidably connected to the other end of the docking plate (402); and the elastic sealing member (407) is arranged between the sealing plate seat (406) and the docking plate (402).

6. The oil-immersed transformer with transformer oil filtering function according to claim 5, characterized in that: A pressure column (4061) is integrally formed on one side of the sealing plate seat (406), and the pressure column (4061) is slidably connected to the inside of the docking plate (402), and the pressure column (4061) cooperates with the spoiler (304).

7. The oil-immersed transformer with transformer oil filtering function according to claim 6, characterized in that: An annular oil drainage groove is provided inside the oil drainage plate (303), and the inside of the annular oil drainage groove cooperates with the top pressure column (4061).

8. The oil-immersed transformer with transformer oil filtering function according to claim 5, characterized in that: An oil passage groove is provided inside one end of the docking plate (402), and the oil passage groove matches the oil drainage groove of the oil drainage plate (303).

9. The oil-immersed transformer with transformer oil filtering function according to claim 5, characterized in that: The inlet column (403) is provided with an inlet groove inside, and the inlet groove matches the inside of the oil inlet pipe (302).

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