CN218974531U

CN218974531U - Relay simulation action test fixture

Info

Publication number: CN218974531U
Application number: CN202223506871.XU
Authority: CN
Inventors: 陈弘基; 吴昊疆; 王和喜; 蒙扬; 欧先朋; 龚奕玮; 胡健辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-12-27
Filing date: 2022-12-27
Publication date: 2023-05-05
Anticipated expiration: 2032-12-27

Abstract

The utility model relates to the technical field of relays, and discloses a relay simulation action test fixture which comprises a relay body, wherein a self-sealing joint with a joint socket is connected to a joint nozzle of the relay body, the joint socket is connected with a needle valve through a connecting pipe, and a gas pipe is further connected to the needle valve. The exhaust of gas is controlled through the needle valve, and the needle valve is more convenient and stable to gas flow control, can prevent that the quick gas leakage phenomenon from appearing in switch body air chamber, under the demand that satisfies the actual action of exhaust reduction pressure simulation, has made things convenient for the inspection maintenance work of current SF6 relay.

Description

Relay simulation action test fixture

Technical Field

The utility model relates to the technical field of relays, in particular to a relay simulation action test fixture.

Background

The relay is an electric control device, and when a change in an input amount (excitation amount) reaches a predetermined requirement, a controlled amount is changed in a predetermined step in an electric output circuit. SF6 density relays are one of the relays and are an important device for protecting and controlling components in an electrical power system.

In the inspection and maintenance work of the power system, there is a requirement that important components need to be inspected in a mode of actual simulation action to check whether the monitoring background alarms correctly. The low-pressure alarm of the SF6 relay and the low-pressure locking of the SF6 relay respectively belong to important and key signals, and the mode of actually simulating the actions of the two signals is required to be correct and reliable. At present, the existing signal simulation action mode is difficult to well meet the requirements.

At present, the conventional SF6 signal simulation action mode is that after the three-way valve of the SF6 density relay is closed, an air supplementing connector is screwed into an air supplementing port, or a screw driver is used for knocking an air supplementing port check valve, residual gas in the SF6 density relay is discharged, and an SF6 pressure low alarm and an SF6 pressure low locking node act along with the SF6 density relay to send out a signal. The way of deflating using the air-make-up fitting has three problems: firstly, the deflation rate cannot be controlled accurately, so that SF6 pressure low alarm and SF6 pressure low locking signals are sent out almost simultaneously; secondly, when the sealing ring of the air supplementing connector fails, the air chamber of the switch body can leak air rapidly before the check valve of the air chamber of the switch body is not completely closed, and the check valve of the air chamber of the switch body can be damaged; thirdly, in the actual analog signal action process, a part of gas can leak at the gas supplementing joint, and a worker is very close to the gas supplementing joint, so that the risk of sucking toxic gas such as SF6 decomposition products exists. If the screw driver is used for knocking the air supplementing port check valve to deflate, the valve can be damaged, so that the equipment leaks air suddenly, and the leaking part is difficult to be plugged effectively.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the utility model provides a relay simulation action test tool which has the advantages of effectively controlling the gas flow, completing the simulation and avoiding the problem of rapid gas leakage of a gas chamber of a switch body, and solves the problems in the background art.

(II) technical scheme

In order to solve the problems, the utility model provides the following technical scheme:

the utility model provides a relay simulation action test fixture, includes the relay body, be connected with the self-sealing joint of taking the joint socket on the gas nipple of relay body, the joint socket is connected with the needle valve through the connecting pipe, still is connected with the gas-supply pipe on the needle valve.

Preferably, the orifice of the gas pipe is connected with a one-way valve.

(III) beneficial effects

Compared with the prior art, the utility model provides a relay simulation action test tool, which has the following beneficial effects:

1. this relay simulation action test fixture controls the discharge of gas through the needle valve, and the needle valve is more convenient and stable to gas flow control, can prevent that the quick gas leakage phenomenon from appearing in switch body air chamber, under the demand that satisfies the actual action of exhaust reduction pressure simulation, has made things convenient for the inspection maintenance work of current SF6 relay.

2. The relay simulation action test fixture can avoid the exhaust nearby the personnel during the exhaust through the exhaust control of the needle valve and the connection of the pipelines, thereby avoiding the harm of the gas to the personnel body and being safer to use.

Drawings

Fig. 1 is a structural diagram of the present utility model.

In the figure: 1. a relay body; 2. a self-sealing joint; 3. a connector socket; 4. a connecting pipe; 5. a needle valve; 6. a gas pipe; 7. a one-way valve.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Referring to fig. 1, a relay simulation action test fixture includes a relay body 1, a self-sealing joint 2, a joint socket 3 and a needle valve 5;

the relay body 1 is SF6 density relay, the air tap of relay body 1 is connected with self-sealing joint 2, self-sealing joint 2 provides the seal after being connected and connect, self-sealing joint 2 bottom and the last mouth that connects socket 3 adopt plug mode to connect to the dismouting is used, connects between socket 3 bottom mouthful and needle valve 5's the air inlet through connecting pipe 4 to be connected, and connecting pipe 4 uses the metal tube, and air pipe 6 is connected in needle valve 5's gas outlet position, and air pipe 6 uses the emulsion hose, and air pipe 6 mouth of pipe connects check valve 7.

The working principle and the use flow of the utility model are that when in use, the self-sealing joint 2 is connected with the joint mouth of the relay body 1, then the opening and closing of the needle valve 5 are controlled, the whole passage is communicated when the relay body 1 is opened, the gas in the gas chamber of the relay body is discharged from the gas pipe 6 and the one-way valve 7 through the self-sealing joint 2, the joint socket 3 and the connecting pipe 4, the gas is placed nearby the principle personnel as far as possible by utilizing the growth provided by the gas pipe 6, and the gas is discharged to form low pressure, thereby simulating the actual low pressure action of the relay, and checking whether the relay correctly carries out low pressure warning and low pressure locking at the moment.

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

Claims

1. The utility model provides a relay simulation action test fixture, includes relay body (1), its characterized in that: the relay is characterized in that a self-sealing joint (2) with a joint socket (3) is connected to a joint nozzle of the relay body (1), the joint socket (3) is connected with a needle valve (5) through a connecting pipe (4), and a gas pipe (6) is further connected to the needle valve (5).

2. The relay simulation action test fixture according to claim 1, wherein: the pipe orifice of the gas pipe (6) is connected with a one-way valve (7).