CN215183715U

CN215183715U - Multi-contact sulfur hexafluoride gas density switch

Info

Publication number: CN215183715U
Application number: CN202121044758.7U
Authority: CN
Inventors: 叶平; 翁其勇; 张伟
Original assignee: Shanghai Xinyuan Meter Factory Co ltd
Current assignee: Shanghai Xinyuan Meter Factory Co ltd
Priority date: 2020-12-02
Filing date: 2021-05-17
Publication date: 2021-12-14
Anticipated expiration: 2031-05-17

Abstract

The utility model discloses a multi-contact sulfur hexafluoride gas density switch, which comprises a base, a spring tube arranged in the base, a machine core, a temperature compensation sheet, an electric contact and a connector connected to the outer side of the base; the electric contact is an electric contact comprising four groups of contacts, and the connector is a 9-core connector capable of connecting the four groups of contacts; the 9-core connector comprises a plug shell, a plug wiring terminal and a socket terminal, wherein the plug wiring terminal and the socket terminal are arranged in the plug shell, 8 contact wiring ports located in the same circular area are arranged on the plug wiring terminal, and 1 grounding terminal is arranged outside the circular area formed by the 8 contact wiring ports on the plug wiring terminal; one side of the grounding end close to the socket end is provided with a grounding reed; the socket end is provided with an insertion end capable of being embedded into the connection terminal port of the contact and two grounding nuts capable of being butted with the grounding reed. The utility model discloses can realize the output of four contact points of sulfur hexafluoride gas density switch.

Description

Multi-contact sulfur hexafluoride gas density switch

Technical Field

The utility model relates to an extra-high voltage power transmission and transformation equipment field in the manufacturing especially relates to a multi-contact sulfur hexafluoride gas density switch, density switch also can be called density controller or density relay in this field.

Background

The sulfur hexafluoride gas density switch is widely used for sulfur hexafluoride electrical equipment such as a high-voltage circuit breaker, a high-voltage mutual inductor, a high-power transformer and the like, and is used for monitoring and controlling the density value of sulfur hexafluoride gas in a closed container. The density value of the sulfur hexafluoride gas is an important index for insulation and arc extinction of high-voltage electrical equipment, so that the accuracy and reliability of the indicating value and the contact value of the sulfur hexafluoride gas density switch are related to the safe operation of a high-voltage power grid.

The sulfur hexafluoride gas density switch mainly comprises four parts, namely a spring tube, a temperature compensation sheet, a machine core and an electric contact. The electric contact has the function of sending out a switching signal when the density value of the sulfur hexafluoride gas in the closed container is reduced to a set value. When the pressure of the sulfur hexafluoride gas to be detected changes, the gas enters the spring tube from the pressure interface end to deform the spring tube, the movement converts and amplifies the deformation linear displacement on the free end of the spring tube into angular displacement on the movement shaft, an indication value obtained by a pointer arranged on the movement shaft is in fixed proportion to the pressure of the sulfur hexafluoride gas to be detected, a contact on the electric contact is driven to output a switching signal, and the temperature compensation sheet is used for eliminating the change of the pressure of the sulfur hexafluoride gas caused by temperature and finally completing the task of monitoring the density value of the sulfur hexafluoride gas. Meanwhile, the sulfur hexafluoride gas density switch is also provided with a contact connector used for outputting a contact output switch signal on the electrical contact.

In the existing sulfur hexafluoride gas density switch, 7-core connectors are used, and except 1 grounding port in 7 wire core ports, the rest 6 ports can only be connected into three groups of contacts at most. With the development of high-voltage power grids, the requirement for multi-contact output of a sulfur hexafluoride gas density switch is met.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

An object of the utility model is to provide a multi-contact sulfur hexafluoride gas density switch mainly solves the technical problem that above-mentioned prior art exists can only export three group's contacts, the utility model discloses simple structure dismantles the convenience, can satisfy the demand of high-voltage electric network equipment to many electrical contacts of sulfur hexafluoride gas density switch.

(II) technical scheme

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

a multi-contact sulfur hexafluoride gas density switch comprises a base, a spring tube arranged in the base, a machine core, a temperature compensation sheet, an electric contact and a connector connected to the outer side of the base; the method is characterized in that: the electric contact is an electric contact comprising four groups of contacts, and the connector is a 9-core connector capable of connecting the four groups of contacts; the 9-core connector comprises a plug shell, a plug wiring terminal and a socket terminal, wherein the plug wiring terminal and the socket terminal are arranged in the plug shell, 8 contact wiring ports located in the same circular area are arranged on the plug wiring terminal, and 1 grounding terminal is arranged outside the circular area formed by the 8 contact wiring ports on the plug wiring terminal; one side of the grounding end close to the socket end is provided with a grounding reed; the socket end is provided with an insertion end capable of being embedded into the connection terminal port of the contact and two grounding nuts capable of being butted with the grounding reed.

The multi-contact sulfur hexafluoride gas density switch is characterized in that: the spring tube is a large tube end force spring tube, and the tube end force of the large tube end force spring tube is 50-70N.

(III) advantageous effects

Compared with the prior art, the utility model provides a multi-contact sulfur hexafluoride gas density switch possesses following beneficial effect: the utility model discloses an improve the port overall arrangement of current connector, on the size and the mode of connection basis that do not change current 7 core connectors, change the connector into 9 cores, can realize the output of four group's contacts of sulfur hexafluoride gas density switch, promoted current sulfur hexafluoride gas density switch's performance, satisfied high-voltage electric network's multiple contact demand.

The utility model discloses, simple structure, nimble and with little costs.

Drawings

Fig. 1 is a schematic structural diagram of a sulfur hexafluoride gas density switch in the prior art.

Fig. 2 is an external view of the present invention.

Fig. 3 is an exploded view of the plug housing and plug terminal of the 9-core connector of the present invention.

Fig. 4 is an exploded view of the plug end and the receptacle end of the 9-core connector of the present invention.

In the figure, 1-a machine base, 11-a machine core, 12-a temperature compensation sheet, 13-an electric contact and 14-a spring tube; 2-7 core connectors; 3-large tube end force spring tube; 4-four sets of contacts; 5-9 core connector, 51-plug shell, 511-locking screw, 52-plug terminal, 521-contact terminal port, 522-grounding terminal, 523-grounding reed, 53-socket terminal and 531-grounding nut.

Detailed Description

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

As shown in fig. 1-4, the utility model provides a multi-contact sulfur hexafluoride gas density switch, which comprises a base 1, a spring tube 14 arranged in the base 1, a movement 11, a temperature compensation plate 12, an electric contact 13 and a connector connected to the outside of the base 1. The electric contact has the function of sending out a switching signal when the density value of the sulfur hexafluoride gas in the closed container is reduced to a set value. When the pressure of the sulfur hexafluoride gas to be detected changes, the gas enters the spring tube from the pressure interface end to deform the spring tube, the movement converts and amplifies the deformation linear displacement on the free end of the spring tube into angular displacement on the movement shaft, an indication value obtained by a pointer arranged on the movement shaft is in fixed proportion to the pressure of the sulfur hexafluoride gas to be detected, a contact on the electric contact is driven to output a switching signal, and the temperature compensation sheet is used for eliminating the change of the pressure of the sulfur hexafluoride gas caused by temperature and finally completing the task of monitoring the density value of the sulfur hexafluoride gas. Meanwhile, the sulfur hexafluoride gas density switch is also provided with a connector used for outputting a switch signal output by a contact on the electric contact. In the utility model, the electric contact is an electric contact 4 comprising four groups of contacts, and the connector is a 9-core connector 5 which can be connected with the four groups of contacts; the 9-core connector 5 comprises a plug shell 51, a plug terminal 52 and a socket terminal 53, wherein the plug terminal 52 and the socket terminal are arranged in the plug shell 51, 8 contact wiring ports 521 positioned in the same circular area are arranged on the

plug terminal

52, and 1 grounding terminal 522 is arranged outside the circular area formed by the 8 contact wiring ports 521 on the plug terminal 52; a grounding reed 523 is arranged on one side of the grounding end 522 close to the socket end 53; the socket end 53 is provided with an insertion end into which the contact terminal port 521 can be inserted and two grounding nuts 531 which can be abutted against the grounding spring 523.

Preferably, the spring tube is a large tube end force spring tube 3, and the tube end force of the large tube end force spring tube 3 is 50-70N.

Fig. 1 is a schematic structural diagram of a sulfur hexafluoride gas density switch in the prior art, and includes a machine base 1, a machine core 11, a temperature compensation plate 12, an electric contact 13, a spring tube 14, and a 7-core connector 2 connected to the left side of the machine base 1. Fig. 2 is a schematic external view of the present invention, compared with the prior art, the present invention adopts a new connector, i.e. a 9-core connector 5; in this embodiment, the electric contacts in the housing 1 are four sets of electric contacts 4, and the 9-core connector 5 can realize four sets of contact outputs.

Fig. 3 to 4 are exploded views of the 9-core connector 5 of the present embodiment, and in the present embodiment, the 9-core connector 5 includes a plug housing 51, a plug terminal 52 provided in the plug housing 51, and a receptacle terminal 53. The terminal 52 and the socket end 53 are embedded in the plug shell 51, wherein the plug terminal 52 is provided with 8 contact wiring ports 521, the 8 contact wiring ports 521 are located in the same circular area and are distributed radially, and a core opening for embedding the locking screw 511 is further arranged at the center position in the circular area. The locking screw 511 passes through the plug housing 51 from the outside to the inside and is inserted into the core hole located at the center in the circular region, thereby fixedly connecting the plug terminal 52 with the plug housing 51. Outside the circular area, the plug terminal 52 is a tab plate extending therefrom through which the ground terminal 522 passes (as shown in fig. 3), and the ground terminal 522 has a ground spring 523 on a side thereof adjacent to the receptacle terminal 53 (i.e., on the back side of the tab plate).

The receptacle end 53 is provided with an insertion end into which the contact terminal port 521 can be inserted and two grounding nuts 531 for abutting against the grounding spring 523. When the plug terminal 52 is mated with the receptacle terminal 53, the 8 insertion ends on the receptacle terminal 53 can be correspondingly inserted into the 8 contact terminal ports 521; two grounding nuts 531 are butted against the grounding reed 523.

Through the overall arrangement change of above-mentioned socket end 53 upper part, the utility model discloses set up earthing terminal 522 alone outside the circular area that 8 contact wiring port 521 constitute to make the connector become 9 cores by original 7 cores, simultaneously, increase the electric contact for four group's contacts in the inside electric contact of seat is supporting, realize the output of four group's contacts of sulfur hexafluoride gas density switch.

Meanwhile, in the embodiment, the large tube end force spring tube 3 is adopted, and the tube end force is 50-70N. In the embodiment, the existing size of the spring tube is changed to increase the tube end force of the spring tube, so that the electric contacts of four groups of contacts can be driven to operate better, and the performance of the sulfur hexafluoride gas density switch is improved.

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 multi-contact sulfur hexafluoride gas density switch comprises a base, a spring tube arranged in the base, a machine core, a temperature compensation sheet, an electric contact and a connector connected to the outer side of the base; the method is characterized in that: the electric contact is an electric contact (4) comprising four groups of contacts, and the connector is a 9-core connector (5) capable of connecting the four groups of contacts; the 9-core connector (5) comprises a plug shell (51), a plug terminal (52) and a socket terminal (53) which are arranged in the plug shell (51), wherein 8 contact terminal ports (521) which are positioned in the same circular area are arranged on the plug terminal (52), and 1 grounding terminal (522) is arranged on the outer side of the circular area formed by the 8 contact terminal ports (521) on the plug terminal (52); one side of the grounding end (522) close to the socket end (53) is provided with a grounding reed (523); the socket end (53) is provided with an insertion end capable of being embedded into the contact wiring port (521) and two grounding nuts (531) capable of being butted with the grounding reed (523).

2. The multi-contact sulfur hexafluoride gas density switch of claim 1, wherein: the spring tube is a large tube end force spring tube (3), and the tube end force of the large tube end force spring tube (3) is 50-70N.