CN206945915U

CN206945915U - A kind of SF6Gas density relay checking instrument

Info

Publication number: CN206945915U
Application number: CN201720624148.1U
Authority: CN
Inventors: 王金胜
Original assignee: Shanghai Shangpeng Electric Co Ltd
Current assignee: Shanghai Shangpeng Electric Co Ltd
Priority date: 2017-06-01
Filing date: 2017-06-01
Publication date: 2018-01-30
Anticipated expiration: 2027-06-01

Abstract

The utility model discloses a kind of SF₆Gas density relay checking instrument, including microprocessor, the relative type motor pressure sensor being connected with microprocessor signals and the temperature sensor being connected with microprocessor signals, the pressure sensor pass through tracheae and SF₆Gas density relay connects, in addition to the make and break contact state detection circuit being connected with microprocessor signals, the make and break contact state detection circuit and SF₆The contact electrical connection of gas density relay.The tester can gather the density of gas according to the change of relay tip state in time and then can ensure checking precision.

Description

A kind of SF6Gas density relay checking instrument

Technical field

It the utility model is related to a kind of relay checking instrument, more particularly to a kind of SF₆Gas density relay checking instrument.

Background technology

SF₆Electric product has been widely used the fast development in power department, industrial and mining enterprises, promoting power industry.Such as What ensures SF₆The reliable and secure operation of electric product is as one of vital task of power department.SF₆Gas density relay It is SF₆One of key element of electric switch, it is used for detecting SF₆SF in electrical equipment body₆The change of gas density, it Performance quality directly influences SF₆The reliable and secure operation of electrical equipment.It is installed on the SF at scene₆Gas density relay is not because Often action, dumb or poor contact of contacts the phenomenon of normal appearance action, some there is also temperature after one period Compensation performance is deteriorated, and easily causes SF when variation of ambient temperature₆Gas density relay malfunctions.Therefore original power portion formulates DL/T596-1996《Power equipment preventive trial code》With《Prevent that 25 emphasis of power generation major accident will Ask》.The testing regulations and requirement all provide：Each SF₆Electric switch should be periodically to SF using unit₆Gas density relay is carried out Verification.From the point of view of practical operation situation, to the SF at scene₆It is to prevent trouble before it happens that gas density relay, which carries out periodic check, is protected Hinder one of necessary means of power equipment safety reliability service.

In sealing container, the SF under certain temperature₆Gas pressure can represent SF₆Gas density.In order to unified, habit Often SF at 20 DEG C on used₆Typical value of the relative pressure of gas as its corresponding density.So SF₆Gas density relay With SF at 20 DEG C₆The pressure of gas is as scale value.When verifying at the scene, under different environment temperatures, the pressure that measures Force value will be converted to reference pressure value when it corresponds to 20 DEG C, so as to judge the SF₆The performance of gas density relay.

Utility model content

Main purpose of the present utility model is to provide a kind of SF₆Gas density relay checking instrument, prior art is entered Row improves, so that tester is more sensitive to ensure checking precision.

To achieve the above objectives, the technical solution adopted in the utility model is：A kind of SF₆Gas density relay verifies Instrument, including microprocessor, the relative type motor pressure sensor that is connected with microprocessor signals and be connected with microprocessor signals Temperature sensor, the relative type motor pressure sensor pass through tracheae and SF₆Gas density relay connects, it is characterised in that also Including the make and break contact state detection circuit being connected with microprocessor signals, the make and break contact state detection circuit and SF₆Gas The contact electrical connection of volume density relay.

Preferably, in addition to microprocessor signals it is connected memory module.

Preferably, in addition to microprocessor signals the communication module being connected.

Preferably, the communication module is wireless communication module.

Preferably, in addition to microprocessor signals the absolute type pressure sensor being connected.

Preferably, in addition to lithium battery, the whole tester of lithium battery are powered.

Preferably, in addition to housing, the microprocessor, relative type motor pressure sensor and make and break contact state-detection are electric Road is arranged in housing.

Preferably, contact thief hatch and force samples mouth, the outer end of the contact thief hatch are provided with the housing It is connected with the contact of relay, the inner of the contact thief hatch is connected with make and break contact state detection circuit, and the pressure is adopted The outer end of sample mouth is connected by tracheae with relay, and the inner of the force samples mouth passes through tracheae and relative type motor pressure sensor Connection.

Preferably, the opening position of the make and break contact is provided with multi-core connector, multiple cores in multi-core connector except with Outside common port, the inner of remaining core is connected by corresponding make and break contact state detection circuit with processor signal respectively, outside The different make and break contact of end connection relay.

Compared with prior art, the utility model has the advantages that：

The tester with the addition of make and break contact state detection circuit on the basis of existing technology, pass through the make and break contact State detection circuit, tester can judge whether the state of relay changes in time, if state changes, school Test instrument and lock current density value immediately, and then ensure that checking precision.

Brief description of the drawings

Fig. 1 is the control principle drawing according to a preferred embodiment of the present utility model

Fig. 2 is the appearance assumption diagram according to a preferred embodiment of the present utility model

Embodiment

Describe to be used to disclose the utility model so that those skilled in the art can realize the utility model below.Retouch below Preferred embodiment in stating is only used as illustrating, it may occur to persons skilled in the art that other obvious modifications.

A kind of as shown in figure 1, SF₆Gas density relay checking instrument, including microprocessor 4 and the signal of microprocessor 4 connect The relative type motor pressure sensor 6 connect and the temperature sensor 8 being connected with the signal of microprocessor 4, the relative type motor pressure sensing Device 6 passes through tracheae and SF₆Gas density relay, which is connected and then can detected by relative type motor pressure sensor 6, passes through SF₆Gas The SF of density monitor₆The relative pressure (relative to the pressure of atmospheric pressure) of gas, the temperature sensor 8 are big to detect Temperature in gas, temperature and SF in air₆The temperature of gas is roughly the same, and the microprocessor 4 can obtain above-mentioned in real time Pressure value and temperature value can be simultaneously converted to the relative pressure under a certain temperature value of acquisition at 20 DEG C by modular converter SF₆The relative pressure of gas is simultaneously shown by liquid crystal display 1, passes through the pressure value and density monitor of twin check instrument Pressure value so as to judge whether density monitor breaks down.The modular converter uses prior art, no longer detailed herein State.

The tester also includes the memory module 3 being connected with the signal of microprocessor 4, and the memory module 3 is used to store Above-mentioned relative pressure and temperature value.The memory module 3 uses prior art, is no longer described in detail herein.By operating accordingly Storage can be inquired about to the data in memory module 3, and then conventional density value can be inquired about.

Also include make and break contact state detection circuit 5, the make and break contact state in order to the tester in time Detection circuit 5 electrically connects with the make and break contact of relay, when make and break contact state detection circuit 5 detects that the switch of relay connects When dotted state changes, tester locks current density value and is shown on liquid crystal display and is preserved data immediately.I.e. Work as SF₆When leaking, the state of the make and break contact of relay changes, such as is closed or from closing to beating from being opened to Open, microprocessor 4 detects that the state of contact will detect immediately after changing by make and break contact state detection circuit 5 SF₆Density value is preserved.The principle of the make and break contact state detection circuit 5 uses prior art, is no longer described in detail herein.

The tester also includes the communication module 2 being connected with the signal of microprocessor 4, and the communication module 2 is channel radio Module is interrogated, by wireless communication module 2, acquired data can be sent to server by microprocessor 4, for passing through client End, which accesses server, can easily obtain corresponding data.Specific address, the communication module 2 use prior art, herein No longer it is described in detail.

The tester also includes the absolute type pressure sensor 7 being connected with the signal of microprocessor 4, passes through absolute type pressure Sensor 7 can obtain the pressure sensor of atmospheric pressure, can interpolate that the environment around relay by atmospheric pressure to take Corresponding measure is to ensure relay work.Also, pass through SF₆Relative pressure and atmospheric pressure sum can obtain SF₆Gas The absolute pressure of body.

The tester also includes lithium battery 9, and lithium battery 9 is that microprocessor 4, memory module 3, communication module 2 etc. provide Electricity.

It is the liquid crystal display 1, communication module 2, memory module 3, micro- as shown in Fig. 2 the tester also includes housing 101 Processor 4, make and break contact state detection circuit 5, relative type motor pressure sensor 6, absolute type pressure sensor 7, temperature sensor 8th, lithium battery 9 is arranged in housing 101.

Contact thief hatch 102 and force samples mouth 103 are respectively arranged with the top of the housing 101, the pressure is adopted The inner of sample mouth 103 is connected by tracheae with relative type motor pressure sensor 6, and the outer end of the force samples mouth 103 passes through tracheae Connected with relay, the inner of the contact thief hatch 102 is connected by wire with make and break contact state detection circuit 5, described The outer end of contact thief hatch 102 is connected by the contact of wire and relay, when contact state changes, microprocessor 4 The pressure value that relative type motor pressure sensor 6 detects is converted into density value immediately to be preserved.

Four core Aviation Connectors are provided with the contact thief hatch 102, a core of the four cores Aviation Connector is public affairs End altogether, the make and break contact connection different from relay of the outer end of its excess-three core, the inner self-corresponding is opened by each respectively Coila state detection circuit 5 is connected with the signal of processor 4, when the different make and break contact states on relay change When, processor 4 will gather SF in relay immediately₆The pressure of gas, the pressure shown by pressure and the relay of collection Contrasted to judge whether relay breaks down.

Show that tester also includes and described general principle, principal character and the utility model of the present utility model above The advantages of.It should be understood by those skilled in the art that the utility model is not restricted to the described embodiments, above-described embodiment and say Simply principle of the present utility model described in bright book, this practicality is new on the premise of the spirit and scope of the utility model is not departed from Type also has various changes and modifications, and these changes and improvements are both fallen within claimed the scope of the utility model.This reality Defined with the protection domain of new requirement by appended claims and its equivalent.

Claims

A kind of 1. SF₆Gas density relay checking instrument, including microprocessor, the relative type motor pressure that is connected with microprocessor signals Sensor and the temperature sensor being connected with microprocessor signals, the relative type motor pressure sensor pass through tracheae and SF6 gas Volume density relay connects, it is characterised in that also includes the make and break contact state detection circuit being connected with microprocessor signals, institute State make and break contact state detection circuit and SF₆The contact electrical connection of gas density relay.
A kind of 2. SF according to claim 1₆Gas density relay checking instrument, it is characterised in that also include and microprocessor Device signal connects memory module.
A kind of 3. SF according to claim 1₆Gas density relay checking instrument, it is characterised in that also include and microprocessor The communication module of device signal connection.
A kind of 4. SF according to claim 3₆Gas density relay checking instrument, it is characterised in that the communication module is Wireless communication module.
A kind of 5. SF according to claim 1₆Gas density relay checking instrument, it is characterised in that also include and microprocessor The absolute type pressure sensor of device signal connection.
A kind of 6. SF according to claim 1₆Gas density relay checking instrument, it is characterised in that also including lithium battery, The whole tester power supply of lithium battery.
A kind of 7. SF according to claim 1₆Gas density relay checking instrument, it is characterised in that also including housing, institute Microprocessor, relative type motor pressure sensor and make and break contact state detection circuit is stated to be arranged in housing.
A kind of 8. SF according to claim 7₆Gas density relay checking instrument, it is characterised in that set on the housing Contact thief hatch and force samples mouth are equipped with, the outer end of the contact thief hatch and the contact of relay are connected, and the contact is adopted The inner of sample mouth is connected with make and break contact state detection circuit, and the outer end of the force samples mouth is connected by tracheae and relay Logical, the inner of the force samples mouth is connected by tracheae with relative type motor pressure sensor.
A kind of 9. SF according to claim 8₆Gas density relay checking instrument, it is characterised in that in the make and break contact Opening position be provided with multi-core connector, multiple cores in multi-core connector except with addition to common port, the inner of remaining core leads to respectively Cross corresponding make and break contact state detection circuit to be connected with processor signal, the different make and break contact of outer end connection relay.