CN210722682U

CN210722682U - Power transformer of rectifying equipment

Info

Publication number: CN210722682U
Application number: CN201921655583.6U
Authority: CN
Inventors: 伍冬琳; 姚勇强
Original assignee: Hubei Xingyi Electric Group Co Ltd
Current assignee: Hubei Xingyi Electric Group Co Ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2020-06-09
Anticipated expiration: 2029-09-30

Abstract

The utility model discloses a power transformer of rectifying equipment, which relates to the technical field of converting alternating current into direct current, and comprises a device body box, an iron core, a coil and an oil tank, wherein the oil tank comprises a shell with an opening at one end and an end cover, the end cover comprises a cover body and a cover edge, a groove is arranged at the opening end of the shell, an inner edge is arranged between the cover edge and the opening of the shell, a first rubber ring is fixedly arranged on one side of the cover body, a second rubber ring is fixedly arranged at the bottom end of the groove, and a plurality of fixing devices are arranged between the cover edge and the side wall of the groove; the fixing device comprises a fixing groove, a fixing rod and a driving rod, wherein the fixing rod is elastically and telescopically arranged, and one end of the fixing rod extends into the groove. Through the setting, first rubber circle and interior cooperation and second rubber circle and lid along the cooperation, can make the seal between end cover and the shell high, simultaneously through the cooperation of dead lever and fixed slot, can make the end cover dismantle easily.

Description

Power transformer of rectifying equipment

Technical Field

The utility model relates to a with alternating current transform for direct current technical field, concretely relates to rectifier equipment's power transformer.

Background

Rectifier transformers are often used in lighting, machine tool electrical appliances, mechanical electronic devices, medical devices, rectifier devices, and the like, and are used to supply a proper voltage to a rectifier system, and also to reduce pollution of a power grid due to waveform distortion caused by the rectifier system.

The structure of a general rectifier transformer comprises an iron core, a coil, a transformer body and an oil tank, and some transformers also comprise a heat dissipation device and an oil conservator. The transformer oil is filled in the oil tank, and has the properties of good insulativity, good thermal conductivity, large specific heat and the like, so the transformer oil can play the roles of insulation, heat dissipation and arc extinction, and the quality of the oil tank shell needs to be strictly controlled in order to prevent the leakage of the transformer oil. The oil tank also comprises an end cover which covers the upper end of the shell, the connection between the end cover and the shell can directly influence the sealing performance of the oil tank, the opening edge of the shell is sealed with the end cover by adopting an oil-resistant rubber rod or a rubber pad, and the joint between the end cover and the opening edge of the shell is bound by a plastic tape or the end head of the end cover and the opening edge of the shell are directly pressed together when the end cover is fixed.

Above-mentioned technical problem has following defect, no matter utilize the ligature to fix end cover and shell or directly press end cover and shell together, during the installation end cover, the end cover all can have the phenomenon that relative shell slided, so can make end cover and shell kneck have enough spaces, and then can make the leakproofness between end cover and the shell not high, and it is more troublesome to utilize ligature and pressfitting to come the method that end cover and shell are connected simultaneously, when the end cover is dismantled to needs, operates more difficultly.

Disclosure of Invention

The utility model aims at the problem that prior art exists, provide a power transformer of rectifying equipment, make the high and oil tank end cover of oil tank seal dismantle easily.

In order to achieve the above object, the utility model adopts the following technical scheme:

a power transformer of rectifying equipment comprises a body box, an iron core, a coil and an oil tank, wherein the oil tank comprises a shell with an opening at one end and an end cover, the end cover comprises a cover body and a cover edge surrounding the periphery of the cover body, the open end of the shell is close to the opening and is provided with a circle of groove matched with the cover edge in an inserting mode, an inner edge is arranged between the cover edge and the opening of the shell, the cover body faces one side of the cover edge and is close to the cover edge, a first rubber ring in interference fit with the inner edge is fixedly arranged at the bottom end of the groove, a second rubber ring in interference fit with the cover edge is fixedly arranged at the bottom end of the groove, and a plurality of fixing devices used for fixing the position of the cover edge are arranged between the cover edge and the side wall of; the fixing device comprises a fixing groove arranged on the side wall of the cover edge, a fixing rod arranged in the side wall of the groove in a sliding mode and matched with the fixing groove in an inserting mode, and a driving rod inserted into the end portion of the shell and used for driving the fixing rod, wherein the fixing rod is elastically and telescopically arranged, and one end of the fixing rod extends into the groove.

Through the technical scheme, transformer oil in the oil tank is not easy to leak from the end cover and the shell through the inner edge and the interference fit of the first rubber ring, the joint between the end cover and the shell is more closed through the interference fit of the cover edge and the second rubber ring, and therefore the transformer oil is not easy to leak. When the lid was along pegging graft in the recess when inside, can make between end cover and the shell through the dead lever grafting adaptation in the fixed slot to keep airtight between messenger's end cover and the shell, utilize the actuating lever can drive the dead lever flexible, and then can control the dead lever and stretch into and extract in the fixed slot, be favorable to the installation and the dismantlement of end cover like this.

Furthermore, the groove side wall and the fixing groove are coaxially provided with a sliding groove matched with the fixing rod in an inserting mode, and a first spring is fixedly arranged between the bottom end of the sliding groove and one end, far away from the groove, of the fixing rod.

Through above-mentioned technical scheme, first spring provides elastic force, makes the dead lever can elastically stretch out and draw back.

Furthermore, a driving groove is formed in one side, facing the opening end of the shell, of the peripheral wall of the fixing rod, the bottom end of the driving groove is obliquely arranged and is higher in the side close to the first spring, and one end of the driving rod is inserted into the opening end of the shell and penetrates into the driving groove.

Through above-mentioned technical scheme, when pushing down the actuating lever, the dead lever can be forced towards keeping away from the recess direction and slide to the cooperation of actuating lever tip and driving tank bottom end, and then makes the actuating lever can control in the dead lever extracts the fixed slot.

Furthermore, the bottom end of the driving groove is concavely arranged, the notch faces the opening end of the driving groove, and the driving rod is close to one end of the driving groove and is arranged in a curved surface mode.

Through above-mentioned technical scheme, the area of contact of curved surface and drive tank bottom can diminish, and the drive tank bottom end indent sets up and can provide an arc slide rail for the drive rod tip, and then makes the actuating lever force the dead lever flexible more easily.

Furthermore, the maximum distance from the opening of the driving groove to the bottom end of the driving groove is greater than the length of the part, extending into the groove, of the fixing rod.

Through above-mentioned technical scheme, when the actuating lever tip slided in drive groove bottom, the dead lever stretched into the part in the recess can stretch into to the spout completely, prevented that the lid from following by the card and died.

Furthermore, a rod cavity is formed in the shell and is arranged right above the sliding groove, the driving rod penetrates through the rod cavity, a blocking piece is fixedly arranged at one end, far away from the fixed rod, of the part, located in the rod cavity, of the driving rod, and a second spring is fixedly arranged between the blocking piece and the rod cavity and outside the peripheral wall of the driving rod.

Through the technical scheme, the second spring provides elastic force, the second spring is matched with the blocking piece to enable the driving process of the driving to be under the action of the elastic force, when the driving rod is loosened, the elastic force is applied to the blocking piece, and then the driving rod can be forced to recover to the original position, so that the next operation is facilitated.

Furthermore, one end, far away from the first spring, of the fixing rod is wedge-shaped, and the wedge surface faces the opening of the groove.

Through above-mentioned technical scheme, set up the dead lever tip into the wedge, the lid can force the dead lever to extend the spout along pegging graft in the inside in-process of recess and slide and stretch into to the spout, and then can not utilize the actuating lever to drive the dead lever to the spout in, reduce operation steps.

Furthermore, the first rubber ring backs to one side of the cover body is provided with an impression around the circumferential direction of the cover body, and the inner edge is close to one end face of the first rubber ring and is in a curved surface arrangement.

Through above-mentioned technical scheme, the curved surface butt of interior edge can increase the area of contact of interior edge tip and rubber circle in impressing, and then can make airtight effect better.

Compared with the prior art, the beneficial effects of the utility model are that:

1. through the interference fit of the inner edge and the first rubber ring and the interference fit of the cover edge and the second rubber ring, the connection between the end cover and the shell can be more closed, and further, the transformer oil can be prevented from leaking from the oil tank;

2. when the cover edge is inserted into the groove, the position of the cover edge can be fixed by inserting the fixed rod into the fixed groove, and then the position of the end cover is fixed, so that the end cover is not easy to slide, and the tightness of the oil tank can be ensured;

3. the fixing rod can be controlled to stretch in the sliding groove through the driving rod, and then the fixing rod can be controlled to be connected in an inserting mode or extend out of the fixing groove, so that the fixing effect of the fixing rod is facilitated.

Drawings

Fig. 1 is a schematic diagram of an internal structure of a power transformer of a rectifier device according to the present invention;

fig. 2 is a schematic view of the overall structure of a power transformer oil tank of the rectifier device of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is an enlarged view of a portion of FIG. 3 at B;

in the figure: 1. a container body box; 2. an oil tank; 3. an iron core; 4. a coil; 5. a heat sink; 6. an oil conservator; 7. a high voltage wiring device; 8. a low voltage wiring device; 9. a housing; 10. an end cap; 11. a port; 12. a cover body; 13. a cover rim; 14. a handle; 15. a groove; 16. an inner edge; 17. a first rubber ring; 18. stamping; 19. a second rubber ring; 20. fixing grooves; 21. fixing the rod; 22. a drive rod; 23. a chute; 24. a first spring; 25. a drive slot; 26. a rod cavity; 27. a baffle plate; 28. a second spring.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1, a power transformer of a rectifier device includes a body case 1, an oil tank 2 filled with transformer oil, an iron core 3, and a coil 4 wound on the iron core 3, wherein the oil tank 2 is disposed in the body case 1, heat dissipation devices 5 are disposed on two sides of the oil tank 2, and an oil conservator 6 communicated with the oil tank 2 is disposed above the oil tank 2. The iron core 3 is arranged inside the oil tank 2, the two sides of the coil 4 are respectively and electrically connected with a high-voltage wiring device 7 and a low-voltage wiring device 8, and the high-voltage wiring device 7 and the low-voltage wiring device 8 are both extended out of the oil tank 2.

Referring to fig. 2 and 3, the fuel tank 2 includes a housing 9 and an end cover 10, wherein a port 11 communicated with the inside of the housing 9 is formed in the center of one end of the housing 9, the end cover 10 includes a cover 12 and a cover edge 13, the shape of the cover 12 is adapted to the shape of the port 11, the area of the cover 12 is larger than that of the port 11, and two handles 14 are symmetrically and fixedly disposed at one end of the cover 12. The cover edge 13 is fixedly arranged on the cover body 12 at one end of the cover body 12 far away from the handle 14 around the periphery of the cover body 12, and the side wall of the cover edge 13 is perpendicular to the end wall of the cover body 12. A circle of groove 15 is formed in the center of the end, where the port 11 is located, of the shell 9 around the peripheral side of the port 11, the groove 15 is arranged close to the port 11, the distance between the outer side wall and the inner side wall of the cover edge 13 is matched with the distance between the two side walls of the groove 15, and when the cover body 12 is arranged on the port 11, the cover edge 13 can be matched in the groove 15 in an inserting mode. The shell 9 between the groove 15 and the port 11 is formed into an inner edge 16, one end of the inner edge 16, which is close to the cover 12, is arranged in a curved surface manner, one end of the cover 12, which faces the cover edge 13, is fixedly provided with a circle of first rubber ring 17, the first rubber ring 17 is arranged close to the inner side wall of the cover edge 13 and extends the direction of the first rubber ring, and in combination with fig. 4, one end of the first rubber ring 17, which faces away from the cover 12, extends the direction of the first rubber ring and is provided with an impression 18 which. The bottom of the groove 15 is fixedly provided with a second rubber ring 19 along the trend, when the cover is arranged in the groove 15 along the 13 cover, one end of the cover 13 far away from the cover body 12 is in interference fit with the second rubber ring 19, at the moment, the inner edge 16 curved surface end is in interference fit with the impression 18, and the contact area between the inner edge 16 curved surface end and the impression 18 can be increased by the fit between the inner edge 16 curved surface end and the first rubber ring 17. The end cover 10 and the shell 9 can be sealed when the cover body 12 is covered on the port 11 through the fit and adaptation of the curved end of the inner edge 16 and the stamping 18 and the interference fit of the cover edge 13 and the second rubber ring 19.

Referring to fig. 3 and 4, a fixing device is respectively arranged between the outer side wall of the cover edge 13 and the outer side wall corresponding to the groove 15, and the fixing device comprises a fixing groove 20, a fixing rod 21 and a driving rod 22 which are arranged at the center of the outer side wall of the cover edge 13. Wherein, 13 lateral walls are followed to fixed slot 20 axis perpendicular to lid, and recess 15 has seted up spout 23 towards a lateral wall of fixed slot 20 and fixed slot 20 is coaxial, and the length of spout 23 is greater than the length of dead lever 21, and dead lever 21 slides and adapts to in spout 23, the size of the 20 tip areas of fixed slot and the size adaptation of dead lever 21 tip areas. A first spring 24 is fixedly arranged between the bottom end of the sliding groove 23 and one end of the fixing rod 21 close to the fixing rod, when the first spring 24 is in a normal state, one end part of the fixing rod 21 far away from the first spring 24 extends into the groove 15, and the part of the fixing rod 21 extending into the groove 15 is in wedge-shaped arrangement and the wedge-shaped surface of the fixing rod faces the opening of the groove 15. The lid is along 13 in-process of pegging graft income recess 15, and the lid can butt dead lever 21 wedge along 13, and then can force dead lever 21 to prolong spout 23 and slide to its inside, moves when aliging with dead lever 21 when fixed slot 20 because the effect of first spring 24 elasticity, forces dead lever 21 wedge one end grafting adaptation in fixed slot 20, fixes lid along 13, and then can fix whole end cover 10.

Referring to fig. 2 and 4, a driving groove 25 is formed in one side of the peripheral wall of the middle position of the fixing rod 21 facing the port 11, the driving groove 25 is formed towards the axis of the fixing rod 21, the bottom end of the driving groove 25 is inclined and is higher than one end of the driving groove which is far away from the first spring 24 and is close to the first spring 24, the bottom end of the driving groove 25 is concavely arranged, a notch of the driving groove 25 faces the opening end of the driving groove 25, and the maximum distance from the opening end of the driving groove 25 to the bottom end of the driving groove 25 is greater than the length of the part.

Locate to drive groove 25 in the shell 9 and locate the position department directly over and seted up pole chamber 26, actuating lever 22 one end is located pole chamber 26 in shell 9 and locates to peg graft in shell 9 and run through pole chamber 26 and stretch into to drive groove 25 directly over the position department, and actuating lever 22 is close to a drive groove 25 terminal surface and sets up and butt drive groove 25 bottom for the curved surface, and when first spring 24 was in under the normal condition that does not have tensile and compression, the higher one side in actuating lever 22 tip butt drive groove 25 bottom. A blocking piece 27 is fixedly arranged at one end, far away from the fixed rod 21, of the part, located in the rod cavity 26, of the driving rod 22, a second spring 28 is sleeved on the peripheral wall of the part, located in the rod cavity 26, of the driving rod 22, and the second spring 28 is located between one end, close to the fixed rod 21, of the rod cavity 26 and the blocking piece 27.

The utility model discloses a theory of operation and beneficial effect do:

when the oil tank 2 is filled with oil, the end cover 10 is covered, the cover edge 13 is inserted into the groove 15, the end part of the inner edge 16 is fitted and matched on the stamping 18, and the end part of the cover edge 13 is in interference fit with the second rubber ring 19, so that the end cover 10 and the shell 9 can be sealed, and the transformer oil is prevented from leaking; when the cover edge 13 is inserted into the groove 15, the outer wall of the cover edge 13 abuts against the wedge-shaped surface of the fixing rod 21, so that the fixing rod 21 can be forced to completely extend into the sliding groove 23, when the fixing groove 20 is opposite to the fixing rod 21, the fixing rod 21 is forced to extend into the fixing groove 20 due to the elastic force of the first spring 24, the position of the cover edge 13 is fixed, and the position of the end cover 10 is fixed; by pressing the driving rod 22, the end of the driving rod 22 slides at the bottom of the driving groove 25, and further the fixing rod 21 can be forced to slide back to the fixing groove 20, when the fixing rod 21 completely slides and is separated from the fixing groove 20, the handle 14 can be pulled to separate the end cover 10 from the housing 9.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A power transformer of rectifying equipment comprises a body box, an iron core, a coil and an oil tank, and is characterized in that the oil tank comprises a shell with an opening at one end and an end cover, the end cover comprises a cover body and a cover edge surrounding the periphery of the cover body, the opening end of the shell is close to the opening and is provided with a groove matched with the cover edge in an inserting mode, an inner edge is arranged between the cover edge and the opening end of the shell, the cover body faces one side of the cover edge and is close to the cover edge, a first rubber ring in interference fit with the inner edge is fixedly arranged at the position of the cover edge, a second rubber ring in interference fit with the cover edge is fixedly arranged at the bottom end of the groove, and a plurality of fixing devices used for fixing the position of the cover edge are arranged between the cover edge and the side wall of the;

the fixing device comprises a fixing groove arranged on the side wall of the cover edge, a fixing rod arranged in the side wall of the groove in a sliding mode and matched with the fixing groove in an inserting mode, and a driving rod inserted into the end portion of the shell and used for driving the fixing rod, wherein the fixing rod is elastically and telescopically arranged, and one end of the fixing rod extends into the groove.

2. The power transformer of claim 1, wherein the groove has a sliding groove coaxially formed on a sidewall thereof and the fixing groove, the sliding groove being adapted to be inserted into the fixing rod, and a first spring is fixedly disposed between a bottom end of the sliding groove and an end of the fixing rod away from the groove.

3. The power transformer for rectification equipment as claimed in claim 2, wherein the fixing rod has a driving slot on a side of the circumferential wall facing the open end of the housing, the bottom end of the driving slot is disposed obliquely and is higher near the first spring, and one end of the driving rod is inserted into the open end of the housing and extends into the driving slot.

4. The power transformer for rectification equipment as claimed in claim 3, wherein the bottom end of the driving slot is recessed and the recess is toward the open end thereof, and the driving rod is disposed in a curved surface near an end of the driving slot.

5. The power transformer for a rectifying device according to claim 4, wherein the maximum distance from the opening of the driving slot to the bottom end thereof is greater than the length of the fixing rod extending into the inner portion of the recess.

6. The power transformer for rectification equipment as claimed in claim 3, wherein a rod cavity is formed in the housing directly above the sliding groove, the driving rod penetrates through the rod cavity, a blocking piece is fixedly arranged at one end of the driving rod, which is far away from the fixing rod, in the rod cavity, and a second spring is fixedly arranged between the blocking piece and the rod cavity and outside the peripheral wall of the driving rod.

7. The power transformer for a rectifying device according to claim 1, wherein said fixing rod is disposed in a wedge shape near one end of said fixing groove and the wedge surface is disposed toward the opening of said groove.

8. The power transformer of claim 1, wherein the first rubber ring has a stamp around its circumference facing away from the cover, and an end of the inner edge adjacent to the first rubber ring has a curved surface.