CN218471705U - Current transformer - Google Patents
Current transformer Download PDFInfo
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- CN218471705U CN218471705U CN202223363693.XU CN202223363693U CN218471705U CN 218471705 U CN218471705 U CN 218471705U CN 202223363693 U CN202223363693 U CN 202223363693U CN 218471705 U CN218471705 U CN 218471705U
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Abstract
Current transformer, relate to mutual-inductor technical field, it includes mutual-inductor body and shell, mutual-inductor body establishes in the shell, the shell includes epitheca and inferior valve, the inferior valve top is equipped with the ring seal groove, be equipped with elastic sealing washer in the ring seal groove, the epitheca bottom is equipped with the annular bulge, epitheca and inferior valve detachably concatenation, the annular bulge card is gone into in the ring seal groove and is hugged closely with the sealing washer, the sealing washer side is fixed with ring seal groove lateral wall, the inferior valve is equipped with crown bar and liftout pole, the crown bar is located the sealing washer below and can be reciprocated by the liftout pole drive, the in-process of ring seal groove is gone into to the annular bulge card, the crown bar shifts up in order to jack up the bottom of sealing washer, so that the annular bulge bottom closely contacts bottom and sealing washer bottom. The utility model provides a current transformer's installation cooperation structure, the air between epitheca and the sealing washer of can discharging improves the gas tightness of epitheca and inferior valve seam crossing to improve the connection compactness of current transformer epitheca and inferior valve.
Description
Technical Field
The utility model relates to a mutual-inductor technical field especially relates to a current transformer.
Background
Current transformers are a common type of device used in electrical systems.
Because the mutual-inductor body is fragile, generally need protect the mutual-inductor body through the shell, need be divided into epitheca and inferior valve with the shell for the installation and the dismantlement of making things convenient for the shell.
In order to increase the tightness of the connection between the upper shell and the lower shell, a sealing ring is usually added at the joint between the upper shell and the lower shell, when the upper shell is mounted on the lower shell, air bubbles may remain between the bottom of the upper shell and the sealing ring, the air tightness is not high, and the connection between the upper shell and the lower shell is not tight, so the tightness of the connection between the upper shell and the lower shell of the current transformer in the prior art is not good.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem or at least partially solve the technical problem, the utility model provides a current transformer can improve current transformer's epitheca and the connection compactness of inferior valve.
The utility model provides a current transformer, current transformer includes mutual-inductor body and shell, mutual-inductor body is established in the shell, the shell includes epitheca and inferior valve, the inferior valve top is equipped with the seal ring groove, be equipped with in the seal ring groove and have elastic sealing washer, the epitheca bottom is equipped with the annular bulge, epitheca and inferior valve detachably concatenation, the annular bulge card is gone into in the seal ring groove and is hugged closely with the seam between sealed epitheca and the inferior valve with the sealing washer, the sealing washer side is fixed with the seal ring groove lateral wall, the inferior valve is equipped with the crown bar that the crown bar removed with being used for driving the crown bar and being connected, the crown bar is located the sealing washer below and can be reciprocated by the crown bar drive, the in-process of seal ring groove is gone into to the annular bulge card, the crown bar shifts up the bottom in order to make the crown bar bottom and sealing washer bottom in close contact with.
Optionally, a slidable quick-insertion piece is arranged at the bottom of the lower shell; the inner wall of the upper shell is provided with an inserting plate, and the bottom of the inserting plate is connected to the clamping matching part through the matching connecting part; the upper part of the quick plug-in is provided with a clamping matching position used for matching with the clamping matching part, the rear end of the quick plug-in is provided with an elastic device, and the rear end of the elastic device abuts against the inner wall of the rear side of the lower shell;
when the upper shell and the lower shell are installed, the clamping matching part contacts the clamping matching position to enable the quick plug-in unit to move towards one side of the elastic device to compress the elastic device, and the quick plug-in unit is rebounded by the elastic device until the upper shell and the lower shell are attached;
one end of the jacking rod is provided with a first tooth groove, the top of the quick plug-in component is provided with a second tooth groove, a gear meshed with the first tooth groove and the second tooth groove is fixed on the side wall of the lower shell, the annular sealing groove is provided with a vertical opening for the jacking rod to move up and down, and one end, far away from the first tooth groove, of the jacking rod is connected to the bottom of the annular plate through the vertical opening;
the quick plug-in unit further comprises a damping mechanism, and the damping mechanism is used for enabling the quick plug-in unit to rebound slowly.
Optionally, the damping mechanism includes piston structure, piston structure includes sleeve and piston rod, telescopic front end fixed connection to the front side inner wall of inferior valve, and the sleeve is inside to slide and is equipped with the piston rod, the rear end of piston rod and the front end fixed connection of fast plug-in components, the sleeve is equipped with the gas pocket to make behind the laminating inferior valve of epitheca the slow resilience of fast plug-in components.
Optionally, the clamping matching position has a guide groove and a clamping groove, the guide groove is arranged above the clamping groove, one side of the guide groove is an inclined plane for guiding the clamping matching portion, and an opening of a connecting portion of the clamping groove and the guide groove is greater than or equal to the maximum cross section of the clamping matching portion;
the elastic device is arranged behind the quick plug-in unit on one side of the inclined plane of the guide groove;
when the upper shell is attached to the lower shell through the height of the matching connecting part, the clamping matching part completely enters the clamping groove;
the quick plug-in is arranged in the sliding groove, so that when the upper shell and the lower shell are installed, the clamping matching part firstly contacts the inclined plane of the guide groove to enable the quick plug-in to integrally move to one side of the elastic device in the sliding groove and compress the elastic device until the clamping matching part enters the clamping groove;
the height in joint groove equals the height of joint cooperation portion, the length in joint groove is greater than the length of joint cooperation portion in order to block joint cooperation portion.
Optionally, the rear end of the quick plug-in unit is further fixedly provided with a pull rod for pulling the quick plug-in unit, the lower casing further comprises a handle, the handle is fixedly connected with the pull rod at the rear end of the quick plug-in unit, and a transverse groove opening for the handle to go in and out is formed in the rear side of the lower casing.
The technical scheme provided by the utility model compare with prior art and have following advantage:
the utility model provides a pair of current transformer makes fast plug-in components backward movement through the inclined plane of the guide way of the fast plug-in components of joint cooperation portion extrusion that sets up, and through the first tooth's socket that sets up at the jacking rod, at the second tooth's socket that sets up at fast plug-in components top and the gear of the first tooth's socket of meshing and second tooth's socket, make fast plug-in components when backward movement, the jacking rod is jacking crown plate in the ring seal groove, because the front end of fast plug-in components still is provided with piston structure, the last gas pocket restriction carminative speed of piston structure, consequently fast plug-in components can not kick-back at once, when epitheca and inferior valve laminating, the jacking rod can also maintain the crown plate at the peak of its jacking. The annular bulge entering the annular sealing groove is matched, so that the annular bulge of the annular plate and the annular bulge of the upper shell mutually extrude the sealing ring between the annular plate and the annular bulge to discharge air between the annular bulge and the sealing ring to reduce air pressure between the sealing ring and the annular bulge, and the sealing ring can be kept in close fit with the annular bulge of the upper shell under the action of atmospheric pressure.
Through the utility model provides a current transformer's installation cooperation structure, the air between epitheca and the sealing washer can discharge has improved the gas tightness of epitheca and inferior valve seam crossing to the connection compactness of current transformer epitheca and inferior valve has been improved.
Drawings
Fig. 1 is a schematic structural diagram of a current transformer provided in an embodiment of the present invention;
fig. 2 is an assembly schematic diagram of a current transformer according to an embodiment of the present invention;
fig. 3 is a schematic view of a part of the structure of the upper case and the lower case provided by the embodiment of the present invention;
fig. 4 is a schematic view of a partial structure of a lower shell according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a fast plug-in module according to an embodiment of the present invention;
fig. 6 is a schematic view illustrating the cooperation between the annular sealing groove and the annular protrusion provided by the embodiment of the present invention;
fig. 7 is a schematic structural diagram of another observation angle of the current transformer provided by the embodiment of the present invention.
Wherein: 1. an upper shell; 11, inserting plates; 111. a mating connection portion; 112. a clamping matching part; 12. an annular projection;
2. a lower case; 21. a chute; 22. a fast plug-in; 221. clamping the matching position; 2211. a guide groove; 2212. a clamping groove; 222. an elastic device; 223. a piston structure; 2231. a sleeve; 2232. a piston rod; 2233. air holes; 224. a second tooth slot; 225. a pull rod; 23. an annular seal groove; 231. a vertical opening; 24. a ring plate; 25. a jacking rod; 251. a first tooth slot; 26. a gear; 27. a seal ring; 28. a handle; 29. the transverse groove is opened;
3. the mutual inductor body.
Detailed Description
The present invention will be described in detail with reference to the following specific examples.
Fig. 1 is a schematic structural diagram of a current transformer provided by an embodiment of the present invention; fig. 2 is an assembly schematic diagram of a current transformer according to an embodiment of the present invention; fig. 3 is a schematic partial structural view of an upper shell and a lower shell provided in an embodiment of the present invention; fig. 4 is a schematic view of a partial structure of a lower shell according to an embodiment of the present invention; fig. 5 is a schematic structural diagram of a fast plug-in module according to an embodiment of the present invention.
As shown in fig. 1-5, the current transformer provided by the present invention comprises a transformer body 3 and a housing, wherein the transformer body 3 is arranged in the housing, and the housing comprises an upper shell 1 and a lower shell 2; the left side and the right side of the bottom of the lower shell 2 are respectively provided with a sliding groove 21, and the sliding grooves 21 on the left side and the right side are respectively provided with a quick plug-in unit 22.
Specifically, the width of the slide groove 21 is equal to the width of the bottom of the quick-insertion piece 22, that is, the length of the slide groove 21 in the left-right direction in fig. 4 is equal to the length of the bottom of the quick-insertion piece 22 in the left-right direction in fig. 4, so that the quick-insertion piece 22 can stably stand in the slide groove 21.
The inner walls of the left side and the right side of the upper shell 1 are respectively provided with an inserting plate 11, and the bottom of the inserting plate 11 is connected to a clamping matching part 112 through a matching connecting part 111.
Specifically, one side of the insert plate 11 and the inner wall of the upper shell 1 are fixed together by glue or welding. The mating connecting portion 111 and the snap-fit portion 112 are integrally formed, and the mating connecting portion 111 is fixed to the bottom of the board 11 by glue or welding.
In this embodiment, the snap-fit portion 112 is a cube, and in other embodiments, the snap-fit portion 112 may also be a sphere.
The fast plug-in components 22 upper portion is provided with and is used for cooperating joint cooperation position 221 with joint cooperation portion 112, joint cooperation position 221 has integrated into one piece's guide way 2211 and joint groove 2212, guide way 2211 sets up on joint groove 2212, the top opening of guide way 2211 is big, and the below opening is little, and one side of guide way 2211 is the inclined plane, the joint portion's of joint groove 2212 and guide way 2211 opening is greater than or equal to joint cooperation portion 112 the biggest cross section.
Specifically, in this embodiment, the guide slot 2211 is a right trapezoid with a large upper opening and a small lower opening.
The quick plug 22 is provided with an elastic means 222 at the rear of the inclined side of the guide slot 2211, and the rear end of the elastic means 222 abuts against the rear inner wall of the lower case 2.
In particular, the elastic means 222 comprise a spring.
The height of the matching connection portion 111 needs to be set according to the height of the inserting plate 11 and the height of the clamping matching portion 112, so that when the upper shell 1 is attached to the lower shell 2, the clamping matching portion 112 completely enters the clamping groove 2212.
Specifically, the height of the mating connection portion 111 refers to the length of the mating connection portion 111 in the up-down direction in fig. 5, and the height of the board 11 refers to the length of the board 11 in the up-down direction in fig. 5.
The position of the quick plug-in 22 in the sliding slot 21 is such that when the upper casing 1 and the lower casing 2 are installed, the snap-fit portion 112 first contacts the inclined surface of the guide slot 2211 so as to move the quick plug-in 22 to the elastic device 222 side on the whole sliding slot 21 and compress the elastic device 222 until the snap-fit portion 112 enters the snap-fit slot 2212.
The height of the clamping groove 2212 is equal to the height of the clamping matching part 112, and the length of the clamping groove 2212 is larger than that of the clamping matching part 112, so that after the clamping matching part 112 enters the clamping groove 2212 of the quick plug-in 22, the quick plug-in 22 rebounds under the driving of the elastic device 222 to clamp the clamping matching part 112.
Specifically, the height of the snap groove 2212 refers to the length of the snap groove 2212 in the up-down direction in fig. 5, the length of the snap groove 2212 refers to the length of the snap groove 2212 in the front-back direction in fig. 5, and the length of the snap-fit portion 112 refers to the length of the maximum cross section of the snap-fit portion 112 in the front-back direction in fig. 5.
Fig. 6 is a schematic view of the annular sealing groove and the annular protrusion provided in the embodiment of the present invention. Referring to fig. 6, the top of the lower casing 2 is further provided with an annular sealing groove 23, an annular plate 24 is movably arranged in the annular sealing groove 23, a sealing ring 27 with a U-shaped cross section is arranged above the annular plate 24, the outer side surface of the sealing ring 27 is fixedly connected with the inner wall of the annular sealing groove 23, and the upper casing 1 is provided with an annular protrusion 12 matched with the annular sealing groove 23.
The seal ring 27 is not shown in fig. 3 and 4 for the sake of convenience in showing other structures.
Specifically, the sealing ring 27 is a flexible plastic ring body with a shape matched with the annular sealing groove 23, and the outer side surface of the sealing ring 27 is fixedly connected with the inner wall of the annular sealing groove 23 through glue.
The lower shell 2 further comprises a lifting rod 25, one end of the lifting rod 25 is provided with a first tooth groove 251, the top of the quick plug-in unit 22 is provided with a second tooth groove 224, a gear 26 which is meshed with the first tooth groove 251 and the second tooth groove 224 is fixed on the side wall of the lower shell 2, the annular sealing groove 23 is provided with a vertical opening 231 for the lifting rod 25 to move up and down, one end of the lifting rod 25, which is far away from the first tooth groove 251, is connected to the bottom of the ring plate 24 through the vertical opening 231, and the lifting rod 25 is high enough to enable the highest point of the ring plate 24 which is lifted to contact the bottom of the sealing ring 27.
Specifically, the height of the lift pin 25 refers to the length of the lift pin 25 in the vertical direction shown in fig. 4. The inner shaft of the gear 26 is fixed on the side wall by welding, and the rotating part of the gear 26 is sleeved on the inner shaft of the gear 26. The rotating portion of the gear 26 engages the first tooth groove 251 and the second tooth groove 224. Because the second tooth space 224 is at the top of the fast inserting piece 22, in the process of installing the upper shell 1 to the lower shell 2, the fast inserting piece 22 moves backwards, at this time, the second tooth space 224 is driven to move backwards, the gear 26 rotates clockwise, the lifting rod 25 is driven to move upwards, and therefore the ring plate 24 is driven to move upwards. Similarly, when the quick-insertion member 22 rebounds, the gear 26 will rotate counterclockwise, which will drive the lifting rod 25 to move downward, and thus the ring plate 24 to move downward. With reference to fig. 4 and 5, the number of the jacking rods 25 is 4, 1 jacking rod 25 is respectively arranged at the front and the back above each fast plug-in unit 22, and in the splicing process of the upper shell 1 and the lower shell 2, the left and the right fast plug-in units 22 are respectively pushed by the corresponding plug boards 11 to synchronously move backwards, so that the 4 jacking rods 25 are driven to synchronously move upwards, and the ring board 24 is driven to integrally move upwards.
The quick plug-in unit 22 further comprises a piston structure 223, the piston structure 223 comprises a sleeve 2231 and a piston rod 2232, the front end of the sleeve 2231 is fixedly connected to the inner wall of the front side of the lower casing 2, the piston rod 2232 is slidably arranged inside the sleeve 2231, the rear end of the piston rod 2232 is fixedly connected to the front end of the quick plug-in unit 22, and the sleeve 2231 is provided with air holes 2233, so that the quick plug-in unit 22 can be slowly rebounded after the upper casing 1 is attached to the lower casing 2.
Specifically, the front end of the sleeve 2231 is fixedly connected to the front inner wall of the lower case 2 by welding.
First, set up piston structure 223 at quick-witted 22 front end, because the air input of gas pocket 2233 is limited, the utility model provides a piston structure 223 has actually acted as a damping structure, consequently can slowly descend at joint cooperation portion 112 when beginning to get into joint groove 2212 completely, avoids the dead weight of epitheca 1 to lead to damaging joint cooperation portion 112 or cooperation connecting portion 111.
In the second aspect, the piston structure 223 provided at the front end of the quick-insertion piece 22 serves as a damping structure, which enables the quick-insertion piece 22 to start rebounding slowly after the upper case 1 is fitted to the lower case 2. At least, have one moment after epitheca and inferior valve laminating, jacking rod 25 can also maintain the crown plate 24 at its jacking peak to in this embodiment highly make 1 laminating inferior valve 2 of epitheca contact sealing washer 27 just through setting up jacking rod 25 the crown plate 24, the cooperation has got into annular bulge 12 of annular seal groove 23, the utility model discloses can realize through crown plate 24 and the annular bulge 12 extrude sealing washer 27 between the two each other, thereby air between discharge annular bulge 12 and the sealing washer 27, under the effect of atmospheric pressure, sealing washer 27 can tightly laminate annular bulge 12.
Through the utility model provides a current transformer's installation cooperation structure, the air between epitheca and the sealing washer of can discharging has improved current transformer's epitheca and the connection compactness of inferior valve.
A pull rod 225 for pulling the quick plug-in 22 is also fixedly arranged at the rear end of the quick plug-in 22.
Fig. 7 is a schematic structural diagram of another observation angle of the current transformer according to the embodiment of the present invention. Referring to fig. 7, the lower case 2 further includes a handle 28, two ends of the handle 28 are respectively fixedly connected to the pull rods 225 at the rear ends of the quick insertion members 22 at two sides of the lower case 2, and a transverse slot opening 29 for the handle 28 to enter and exit is formed at the rear side of the lower case 2. The detachment of the upper case 1 and the lower case 2 can be completed by a single worker pulling the handle 28 with one hand and lifting the upper case 1 with the other hand.
It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.
Claims (5)
1. Current transformer, current transformer includes mutual-inductor body and shell, mutual-inductor body establishes in the shell, the shell includes epitheca and inferior valve, the inferior valve top is equipped with the ring seal groove, be equipped with elastic sealing washer in the ring seal groove, the epitheca bottom is equipped with the annular bulge, epitheca and inferior valve detachably concatenation, the annular bulge card is gone into in the ring seal groove and is hugged closely with the sealing washer with the seam between sealed epitheca and the inferior valve, a serial communication port, the sealing washer side is fixed with ring seal groove lateral wall, the inferior valve is equipped with the crown bar that crown bar and be used for driving the crown bar removal of crown bar, the crown bar is connected with the crown bar, the crown bar is located the sealing washer below and can be reciprocated by the crown bar drive, the in-process of annular bulge card income ring seal groove, the crown bar shifts up in order to upwards jack-up the bottom of sealing washer, so that the annular bulge bottom and sealing washer bottom in close contact with.
2. The current transformer of claim 1, wherein the bottom of the lower shell is provided with a slidable quick-insertion member; the inner wall of the upper shell is provided with an inserting plate, and the bottom of the inserting plate is connected to the clamping matching part through the matching connecting part; the upper part of the quick plug-in is provided with a clamping matching position used for matching with the clamping matching part, the rear end of the quick plug-in is provided with an elastic device, and the rear end of the elastic device is abutted against the inner wall of the rear side of the lower shell;
when the upper shell and the lower shell are installed, the clamping matching part contacts the clamping matching position to enable the quick plug-in unit to move towards one side of the elastic device to compress the elastic device, and the quick plug-in unit is rebounded by the elastic device until the upper shell and the lower shell are attached;
one end of the jacking rod is provided with a first tooth groove, the top of the quick plug-in component is provided with a second tooth groove, a gear meshed with the first tooth groove and the second tooth groove is fixed on the side wall of the lower shell, the annular sealing groove is provided with a vertical opening for the jacking rod to move up and down, and one end, far away from the first tooth groove, of the jacking rod is connected to the bottom of the annular plate through the vertical opening;
the quick plug-in further comprises a damping mechanism for enabling the quick plug-in to rebound slowly.
3. The current transformer according to claim 2, wherein the damping mechanism comprises a piston structure, the piston structure comprises a sleeve and a piston rod, the front end of the sleeve is fixedly connected to the inner wall of the front side of the lower shell, the piston rod is slidably arranged inside the sleeve, the rear end of the piston rod is fixedly connected with the front end of the quick plug-in unit, and the sleeve is provided with an air hole so that the quick plug-in unit can be slowly rebounded after the upper shell is attached to the lower shell.
4. The current transformer according to claim 2, wherein the clamping fitting position has a guide groove and a clamping groove, the guide groove is arranged above the clamping groove, one side of the guide groove is an inclined surface for guiding the clamping fitting part, and an opening of a connecting part of the clamping groove and the guide groove is larger than or equal to the maximum cross section of the clamping fitting part;
the elastic device is arranged behind the quick plug-in unit on one side of the inclined plane of the guide groove;
when the upper shell is attached to the lower shell through the height of the matching connecting part, the clamping matching part completely enters the clamping groove;
the quick plug-in is arranged in the sliding groove, so that when the upper shell and the lower shell are installed, the clamping matching part firstly contacts the inclined plane of the guide groove to enable the quick plug-in to integrally move to one side of the elastic device in the sliding groove and compress the elastic device until the clamping matching part enters the clamping groove;
the height in joint groove equals the height of joint cooperation portion, the length in joint groove is greater than the length of joint cooperation portion in order to block joint cooperation portion.
5. The current transformer according to any one of claims 2-4, wherein a pull rod for pulling the quick plug-in unit is fixedly arranged at the rear end of the quick plug-in unit, the lower shell further comprises a handle, the handle is fixedly connected with the pull rod at the rear end of the quick plug-in unit, and a transverse slot opening for the handle to enter and exit is formed in the rear side of the lower shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223363693.XU CN218471705U (en) | 2022-12-15 | 2022-12-15 | Current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223363693.XU CN218471705U (en) | 2022-12-15 | 2022-12-15 | Current transformer |
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| Publication Number | Publication Date |
|---|---|
| CN218471705U true CN218471705U (en) | 2023-02-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223363693.XU Active CN218471705U (en) | 2022-12-15 | 2022-12-15 | Current transformer |
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| Country | Link |
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| CN (1) | CN218471705U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117995512A (en) * | 2024-03-18 | 2024-05-07 | 山东丽娜能源科技有限公司 | Intelligent separation type mutual inductor |
-
2022
- 2022-12-15 CN CN202223363693.XU patent/CN218471705U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117995512A (en) * | 2024-03-18 | 2024-05-07 | 山东丽娜能源科技有限公司 | Intelligent separation type mutual inductor |
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