CN216054259U

CN216054259U - Opening-closing type current transformer suitable for high-temperature and low-temperature environment

Info

Publication number: CN216054259U
Application number: CN202122208870.6U
Authority: CN
Inventors: 张一鸣; 张青
Original assignee: Jiangsu Kerui Electric Co ltd
Current assignee: Jiangsu Kerui Electric Co ltd
Priority date: 2021-09-13
Filing date: 2021-09-13
Publication date: 2022-03-15
Anticipated expiration: 2031-09-13

Abstract

The utility model discloses an open-close type current mutual inductor suitable for high and low temperature environments, which comprises an upper shell, wherein a first iron core is arranged in the upper shell, a groove is formed in the lower end surface of the upper shell, a buckle is arranged at one end of the upper shell, a first connecting block is arranged at one end, away from the buckle, of the upper shell, a sliding groove is formed in the first connecting block, a limiting ring is arranged at the lower end of the sliding groove, a fixing pin is arranged in the sliding groove, a first spring part is connected to the fixing pin, a lower shell is connected to the lower portion of the upper shell, a second iron core is arranged in the lower shell, and a sealing gasket is arranged on the upper end surface of the lower shell; this adaptation high low temperature environment's open-close type current is mutual-inductive, through setting up the sliding tray in first connecting block to set up fixed pin, first spring part and stopper in the sliding tray, pass the second connecting block with the fixed pin and fix with the screw cap during the use, can reach and avoid going up the purpose that produces the space between casing and the lower casing.

Description

Opening-closing type current transformer suitable for high-temperature and low-temperature environment

Technical Field

The utility model relates to the technical field of current transformers, in particular to an open-close type current mutual inductor suitable for high and low temperature environments.

Background

At present, along with the application and development of a smart power grid, the requirements for measurement, protection and monitoring of power consumption data of the power grid are continuously increased, and in order to save the installation cost of a power grid transformer or solve the installation problem of field transformers which cannot be powered off, an open-close type current transformer appears in the market, so that the device can be conveniently installed.

The prior art has the following defects or problems:

1. when the current transformer is used, when the temperature difference in the environment changes greatly, due to thermal expansion and cold contraction, fixing pins used for fixing an upper shell and a lower shell on the device are easy to loosen, so that a gap exists at the joint of the upper shell and the lower shell, a first iron core in the upper shell cannot be in contact with a second iron core in a second shell, and the device cannot be normally used;

2. the open-close type current mutual inductance existing in the current market is large in diameter of a detected cable due to the diameter of a circular ring formed by an upper shell and a lower shell when the open-close type current mutual inductance is used, so that the detected cable can shake in the circular ring, the shell is easy to collide, and the device is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide the open-close type current mutual inductance suitable for the high-temperature and low-temperature environment aiming at the defects in the prior art so as to solve the problems in the background art.

In order to achieve the purpose, the utility model provides the following technical scheme: an open-close type current mutual inductor adapting to high and low temperature environment comprises an upper shell, wherein a first iron core is arranged in the upper shell, a groove is arranged on the lower end surface of the upper shell, a buckle is arranged at one end of the upper shell, a first connecting block is arranged at one end of the upper shell far away from the buckle, a sliding groove is arranged in the first connecting block, and the lower end of the sliding groove is provided with a limit ring, the sliding groove is internally provided with a fixed pin, the fixed pin is connected with a first spring part, the lower part of the upper shell is connected with a lower shell, a second iron core is arranged in the lower shell, a sealing gasket is arranged on the upper end surface of the lower shell, a second connecting block is arranged at one end of the lower shell, a through hole is arranged on the second connecting block, and the one end that the second connecting block was kept away from to the casing down is equipped with the fixture block, the lower terminal surface of casing is equipped with the fixed block down, and the below of casing is equipped with the mount pad down, set up threaded hole on the lateral wall of mount pad.

As a preferred technical scheme, three groups of rubber blocks and three groups of second spring parts are arranged between the upper shell and the lower shell, one group of rubber blocks is fixedly connected with the upper shell through the second spring parts, and the other two groups of rubber blocks are fixedly connected with the lower shell through the second spring parts.

As a preferable technical scheme of the utility model, the size of the upper shell is the same as that of the lower shell, and the size of the groove is matched with that of the sealing gasket.

As a preferable technical scheme of the utility model, the size of the buckle is matched with that of the clamping block, and the buckle is rotatably connected with the clamping block through the rotating pin.

In a preferred embodiment of the present invention, the first connecting block and the second connecting block are located at positions corresponding to each other, and the size of the through hole is matched with the size of the fixing pin.

In a preferred embodiment of the present invention, the shape of the sliding groove is matched with the shape of the fixing pin end cap, and the inner diameter of the retainer ring is smaller than the outer diameter of the first spring member.

As the preferable technical scheme of the utility model, the fixing block is provided with a hole matched with the threaded hole, and the lower shell is fixedly connected with the mounting seat through a screw.

Compared with the prior art, the utility model provides the open-close type current mutual inductance suitable for the high-temperature and low-temperature environment, and the open-close type current mutual inductance has the following beneficial effects:

1. the opening-closing type current transformer suitable for the high-temperature and low-temperature environment is characterized in that a sliding groove is formed in a first connecting block, a fixing pin, a first spring part and a limiting block are arranged in the sliding groove, the fixing pin penetrates through a second connecting block and is fixed by a screw cap during use, so that an upper shell and a lower shell are connected together, the first spring part can be compressed after fixing, when the fixing pin is loosened due to expansion with heat and contraction with cold or other reasons, the first spring part can provide reverse force for the fixing pin due to compression, so that the first connecting part and the second connecting part can be tightly attached together, gaps between the upper shell and the lower shell are avoided, and normal use of the device is effectively guaranteed;

2. this an open-close type current that adapts to high low temperature environment is mutual inductance, inboard through last casing and lower casing sets up block rubber and second spring part, and the block rubber that sets up is three horn shapes and arranges, fix the cable through three block rubbers during the use, can effectually prevent that the cable from taking place to rock, the second spring part that sets up simultaneously can take place to stretch out and draw back according to the diameter of cable, thereby can make the cable of this structure fixed different models, and can fix the cable that waits to detect through this design, go up the center department that casing and lower casing body formed the ring, thereby can improve device testing result's accuracy.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention;

FIG. 3 is a schematic structural diagram of the end faces of the upper and lower shells of the present invention;

FIG. 4 is an enlarged view of the portion A of FIG. 2 according to the present invention.

In the figure: 1. an upper housing; 2. a first iron core; 3. a groove; 4. buckling; 5. a first connection block; 6. a sliding groove; 7. a limiting ring; 8. a fixing pin; 9. a first spring member; 10. a lower housing; 11. a second iron core; 12. a gasket; 13. a second connecting block; 14. a through hole; 15. a clamping block; 16. a fixed block; 17. a mounting seat; 18. a threaded hole; 19. a rubber block; 20. a second spring member.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, in this embodiment: an open-close type current mutual inductance suitable for high and low temperature environment comprises an upper shell 1, wherein a first iron core 2 is arranged in the upper shell 1, a groove 3 is formed in the lower end face of the upper shell 1, a buckle 4 is arranged at one end of the upper shell 1, a first connecting block 5 is arranged at one end, away from the buckle 4, of the upper shell 1, a sliding groove 6 is formed in the first connecting block 5, a limiting ring 7 is arranged at the lower end of the sliding groove 6, a fixing pin 8 is arranged in the sliding groove 6, a first spring part 9 is connected to the fixing pin 8, a lower shell 10 is connected below the upper shell 1, a second iron core 11 is arranged in the lower shell 10, a sealing gasket 12 is arranged on the upper end face of the lower shell 10, a second connecting block 13 is arranged at one end of the lower shell 10, a through hole 14 is formed in the second connecting block 13, a clamping block 15 is arranged at one end, away from the second connecting block 13, a fixing block 16 is arranged on the lower end face of the lower shell 10, and a mounting seat 17 is arranged below the lower shell 10, and a threaded hole 18 is formed in the side wall of the mounting seat 17.

In this embodiment, three groups of rubber blocks 19 and three groups of second spring members 20 are arranged between the upper casing 1 and the lower casing 10, one group of rubber blocks 19 is fixedly connected with the upper casing 1 through the second spring members 20, and the other two groups of rubber blocks 19 are fixedly connected with the lower casing 10 through the second spring members 20, so as to fix the cable to be detected; the size of the upper shell 1 is the same as that of the lower shell 10, and the size of the groove 3 is matched with that of the sealing gasket 12, so that rainwater is prevented from permeating into the device; the size of the buckle 4 is matched with that of the clamping block 15, and the buckle 4 is rotatably connected with the clamping block 15 through a rotating pin, so that the device is convenient to assemble and use; the position of the first connecting block 5 corresponds to the position of the second connecting block 13, and the size of the through hole 14 is matched with that of the fixing pin 8 so as to fix the upper shell 1; the shape of the sliding groove 6 is matched with the shape of the end cap of the fixing pin 8, and the inner diameter of the limiting ring 7 is smaller than the outer diameter of the first spring piece 9, so that the fixing pin 8 is prevented from rotating in the sliding groove 6; the fixing block 16 is provided with a hole matching with the threaded hole 18, and the lower housing 10 is fixedly connected with the mounting seat 17 through a screw, so as to facilitate the installation of the device.

The working principle and the using process of the utility model are as follows: according to the utility model, the fixing of the upper shell 1 can be realized through the arranged fixing pin 8, the situation that a gap is generated between the upper shell 1 and the lower shell 10 due to the looseness between the fixing pin 8 and a screw cap can be avoided by utilizing the elasticity of the first spring part 9 arranged on the fixing pin 8, meanwhile, the cable to be detected can be fixed at the central position of the upper shell 1 and the lower shell 10 by utilizing the arranged rubber blocks 19 and the second spring parts 20 which are arranged in a triangular mode, and the fixing of cables of different models can be realized by utilizing the scalability of the spring.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an open-close type current is mutual inductance of adaptation high low temperature environment which characterized in that: comprises an upper shell (1), wherein a first iron core (2) is arranged in the upper shell (1), a groove (3) is formed in the lower end face of the upper shell (1), a buckle (4) is arranged at one end of the upper shell (1), a first connecting block (5) is arranged at one end, away from the buckle (4), of the upper shell (1), a sliding groove (6) is formed in the first connecting block (5), a limiting ring (7) is arranged at the lower end of the sliding groove (6), a fixing pin (8) is arranged in the sliding groove (6), a first spring part (9) is connected onto the fixing pin (8), a lower shell (10) is connected below the upper shell (1), a second iron core (11) is arranged in the lower shell (10), a sealing gasket (12) is arranged on the upper end face of the lower shell (10), a second connecting block (13) is arranged at one end of the lower shell (10), and a through hole (14) is formed in the second connecting block (13), and the one end that second connecting block (13) was kept away from in inferior valve casing (10) is equipped with fixture block (15), the lower terminal surface of casing (10) is equipped with fixed block (16) down, and the below of casing (10) is equipped with mount pad (17) down, set up threaded hole (18) on the lateral wall of mount pad (17).

2. The open-close type current mutual inductor adapting to the high-temperature and low-temperature environment as claimed in claim 1, wherein: go up casing (1) and be provided with three group's rubber piece (19) and three group's second spring part (20) down between casing (10), and wherein a set of rubber piece (19) pass through second spring part (20) and last casing (1) fixed connection, two sets of in addition rubber piece (19) pass through second spring part (20) and casing (10) fixed connection down.

3. The open-close type current mutual inductor adapting to the high-temperature and low-temperature environment as claimed in claim 1, wherein: the size of the upper shell (1) is the same as that of the lower shell (10), and the size of the groove (3) is matched with that of the sealing gasket (12).

4. The open-close type current mutual inductor adapting to the high-temperature and low-temperature environment as claimed in claim 1, wherein: the size of the buckle (4) is matched with that of the clamping block (15), and the buckle (4) is rotatably connected with the clamping block (15) through a rotating pin.

5. The open-close type current mutual inductor adapting to the high-temperature and low-temperature environment as claimed in claim 1, wherein: the position of the first connecting block (5) corresponds to the position of the second connecting block (13), and the size of the through hole (14) is matched with the size of the fixing pin (8).

6. The open-close type current mutual inductor adapting to the high-temperature and low-temperature environment as claimed in claim 1, wherein: the shape of the sliding groove (6) is matched with the shape of the end cap of the fixing pin (8), and the inner diameter of the limiting ring (7) is smaller than the outer diameter of the first spring piece (9).

7. The open-close type current mutual inductor adapting to the high-temperature and low-temperature environment as claimed in claim 1, wherein: the fixing block (16) is provided with a hole matched with the threaded hole (18), and the lower shell (10) is fixedly connected with the mounting seat (17) through a screw.