CN104295886B

CN104295886B - Efficient SF6 gas processing tool

Info

Publication number: CN104295886B
Application number: CN201410503729.0A
Authority: CN
Inventors: 何满棠; 吴树平; 邵逸镇; 袁镜江; 李志钿; 谢昱良; 张倩; 曾宪文; 蔡宝龙; 樊健斌
Original assignee: Dongguan Power Supply Bureau of Guangdong Power Grid Co Ltd
Current assignee: Dongguan Power Supply Bureau of Guangdong Power Grid Co Ltd
Priority date: 2014-09-26
Filing date: 2014-09-26
Publication date: 2017-03-22
Anticipated expiration: 2034-09-26
Also published as: CN104295886A

Abstract

The invention discloses an efficient SF6 gas processing tool. The efficient SF6 gas processing tool comprises a platy fixed base, a public connecting pipe installed on the fixed base and at least four joints used for connecting SF6 equipment air chambers and vacuumizers, wherein the two ends of the public connecting pipe are closed, at least four connectors are arranged on a pipe body of the public connecting pipe, and the joints are correspondingly connected to the connectors. With the adoption of the efficient SF6 gas processing tool, as a plurality of vacuumizers are connected with the efficient SF6 gas processing tool, air recycling and vacuum pumping are simultaneously carried out on a plurality of air chambers, and working efficiency is greatly improved; in addition, the plurality of air chambers can be inflated by virtue of a plurality of bottles of SF6 or N2 gas, and thus inflation efficiency is improved; structure is simple, manufacturing cost is low, time for processing SF6 during SF6 equipment overhaul and repairing work can be greatly shortened, manpower and material source consumption is saved, and power failure time of equipment is shortened.

Description

A kind of efficient SF6 gas treatment instruments

Technical field

The present invention relates to a kind of SF₆The aid of combined electrical apparatus (GIS), more particularly to a kind of efficient SF6 gases recovery, Evacuation and inflatable tool.

Background technology

With developing rapidly and increasingly raising to Operation of Electric Systems reliability requirement for global power system, SF₆ Gas has superior insulation and arc quenching characteristic because of which, has been widely used in the combined electrical apparatus of power system, chopper, electric current In the various electrical equipments such as transformer, voltage transformer, SF is made₆Equipment is on the increase.SF₆Equipment also by its floor space it is few, The superior technical performances such as dielectric strength height, maintenance period length, increasingly occuping market, become the Developing mainstream of High-Voltage Electrical Appliances.

However, SF₆During the works on the spot such as equipment carries out overhauling in troubleshooting and to which, overhaul, also there is following defect： ⑴SF₆Equipment inflation inlet on mechanism case, when scene carries out gas treatment, it is often necessary to change supporting hose coupler, repeatedly After dismounting, gas circuit tube head is very easy to abrasion, causes tightness to decline, and increased gas leakage, the probability that moisture penetrates into；(2) reclaim When gas and evacuation, an evacuator is individually to SF₆One air chamber of equipment is operated, and work efficiency is very low；⑶ During inflation, single bottle SF₆Or N₂Gas is individually inflated to an air chamber, and charging efficiency is relatively low；(4) it is particularly big in GIS air chambers Repair with repair, SF₆Process time is long；(5) existing gas recovery and evacuation, the operation of inflation also result in greatly The manpower and materials consumption of amount, increased the power off time of equipment；(6) existing SF₆Equipment inflation when, by SF₆Equipment and inflation connect Head connection fastening, after opening gas cylinder and pressure loading valve, unscrews two bolts that nut or loosening are fastenedly connected flange, discharges gas Afterwards, fasten reinflated, the sealing and water proofing property of gas-charging connection is poor, cause moist open air cannot continuous firing, work Poor reliability.

To sum up, SF₆Device context working time and maintenance process are received site environment change, gas recovery, evacuation and are filled The impact of gas efficiency, causes inefficiency, equipment power off time length, affects power supply quality, and this becomes current SF₆Equipment is examined Repair work and be difficult to one of technical barrier for capturing.

The content of the invention

It is an object of the invention to provide a kind of constitute simple structure, low manufacture cost, can increase substantially work effect The efficient SF6 gas treatment instruments of rate, can greatly shorten gas processing time.

The above-mentioned purpose of the present invention is by the following technical solutions realizing：A kind of efficient SF₆Gas treatment instrument, which is special Levy and be：It includes that the firm banking of tabular, the commonly connected pipe on firm banking and at least 4 are used for connecting SF₆ The joint of equipment air chamber and evacuator, two vessel end closures of the commonly connected pipe, on the pipe shaft of the commonly connected pipe At least 4 interfaces are provided with, the joint correspondence is connected on interface.

The present invention can be coupled using multiple stage evacuator, while gas recovery and evacuation are carried out to multiple air chambers, Greatly improve work efficiency；In addition, it is possible to use many bottles of SF₆Or N₂Gas is inflated to multiple air chambers simultaneously, improves inflation effect Rate.Present invention composition simple structure, low manufacture cost, can greatly shorten in SF₆SF in equipment rebuilding and repair₆Process Time, saved manpower and materials consumption, shortened the power off time of equipment.

Used as one embodiment of the present invention, the joint is DN40 copper joints or is that DN20 is copper to be connect Head.Copper product anticorrosion, and air-tightness is good.

Used as a kind of preferred implementation of the present invention, the joint adopts 4 DN40 copper joints and 6 DN20 copper Joint, the commonly connected bore are DN40, and the interface is 10, and wherein 4 interfaces are located at the pipe shaft of commonly connected pipe Used as DN40 interfaces, remaining 6 interface is located at the pipe shaft opposite side of commonly connected pipe as DN20 interfaces, and 4 DN40 connect for side Mouth and 4 DN20 interfaces are corresponded, and remaining 2 DN20 interface is located at two pipe ends of commonly connected pipe, DN40 copper joints It is connected with DN40 interfaces, DN20 copper joints are connected with DN20 interfaces.

As a modification of the present invention, valve is equipped with the DN40 copper joints and DN20 copper joints.Profit With the multiple valves of free-open-close, gas mode of movement can be changed in the case of working gas treatment is not suspended, when saving work Between, and reduce the risk that the tightness caused due to repeating dismounting joint declines.

Used as one embodiment of the present invention, the valve adopts ball valve.

DN40 copper joints of the present invention and DN20 copper joints are respectively mainly by for connecting SF₆Equipment air chamber and The straight-through connecting piece of evacuator, self-sealing head and the ball valve integrally welded composition successively.Air-tightness and water proofing property are strong, can prevent Only internal gas are revealed and outside moisture is entered, and in moist open air still sustainable work, improve functional reliability.

Compared with prior art, the present invention has following significant effect：

(1) " multimachine takes out single or many air chambers altogether ", can be same on the joint of the present invention by being connected to using multiple stage evacuator When to a SF₆Multiple air chambers or difference SF in equipment₆Multiple air chambers in equipment carry out gas recovery and evacuation, greatly It is big to improve work efficiency.

(2) " many sources of the gas are same to fill many air chambers ", can use many bottles of SF₆Or N₂Gas is simultaneously to a SF₆Multiple gas in equipment Room or difference SF₆Multiple air chambers in equipment are inflated, and improve charging efficiency, greatly shorten in the overhaul of GIS air chambers and repair Return to work SF in making₆The time of process, manpower and materials consumption is saved, shortened the power off time of equipment.

(3) the present invention uses the multiple valves of free-open-close, can change gas defeated in the case of working gas treatment is not suspended Mode is sent, the working time is saved, and reduces the risk that the tightness caused due to repeating dismounting joint declines.

(4) each building block of joint is integrally welded, and air-tightness and water proofing property are strong, can prevent internal gas from revealing and outer Portion's moisture is entered, and in moist open air still sustainable work, improves functional reliability.

(5) composition simple structure of the invention, low manufacture cost, practical, can make the overall process (gas in gas treatment Body recovery, evacuation, nitrogen charging, fill SF₆Gas) uninterrupted, consistently can carry out, reduce the weather in the process overall process of gas Or impact of the environmental factorss to working, make SF₆The recovery of gas and inflation work overall process are more controllable, stable, efficient.

Description of the drawings

The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.

Fig. 1 is the top view of the present invention.

Specific embodiment

As shown in figure 1, being a kind of efficient SF6 gas treatment instruments of the present invention, it includes the firm banking 1 of tabular, installs Commonly connected pipe 2 on firm banking 1 and at least 4 are used for connecting SF₆The joint of equipment air chamber and evacuator, public company Two vessel end closures of adapter 2, are provided with least 4 interfaces on the pipe shaft of commonly connected pipe 2, and joint correspondence is connected on interface.

In the present embodiment, joint adopts 4 DN40 copper joints 3 and 6 DN20 copper joints 4, in commonly connected pipe 2 Footpath is DN40, and interface is 10, and wherein 4 interfaces are located at the pipe shaft side of commonly connected pipe 2 as DN40 interfaces, remaining 6 Interface is located at the pipe shaft opposite side of commonly connected pipe 2 and corresponds as DN20 interfaces, 4 DN40 interfaces and 4 DN20 interfaces, Remaining 2 DN20 interface is located at two pipe ends of commonly connected pipe 2, and DN40 copper joints 3 are connected with DN40 interfaces, and DN20 is copper Joint 4 is connected with DN20 interfaces.

Valve is equipped with DN40 copper joints 3 and DN20 copper joints 4, and valve adopts ball valve 5, using free-open-close Multiple valves, can not suspend gas treatment work in the case of change gas mode of movement, save the working time, and reduce by In the risk for repeating the tightness decline that dismounting joint causes.

In the present embodiment, DN40 copper joints and DN20 copper joints are respectively mainly by for connecting SF₆Equipment air chamber Straight-through connecting piece 6, self-sealing head 7 and ball valve 5 with evacuator integrally welded composition successively.Air-tightness and water proofing property are strong, can Prevent internal gas from revealing and outside moisture entrance, in moist open air still sustainable work, improve functional reliability.

The course of work of the present invention is as follows：

(1) multimachine takes out many air chambers altogether：Multiple stage evacuator is connected on each joint, these joints also correspond to connection To a SF₆Multiple air chambers or difference SF in equipment₆Multiple air chambers in equipment, while open evacuator, number during beginning Platform vacuum machine makes a concerted effort air chamber to be evacuated to required vacuum by normal pressure (1 atmospheric pressure) in short-term, is capable of achieving to a SF₆In equipment Multiple air chambers or difference SF₆Multiple air chambers in equipment carry out gas recovery and evacuation, than conventional retracting device evacuation Time fast several times, close remaining vacuum pump after reaching required vacuum, carry out lasting evacuation with separate unit vacuum machine, it is to avoid multiple stage When vast capacity is long operate cause vacuum too low to equipment damage and unnecessary waste, while ensure that vacuum and when Between evacuation require.

(2) many sources of the gas are same fills many air chambers：By many bottles of SF₆Or N₂Gas apparatus are connected on each joint, can simultaneously to one Individual SF₆Multiple air chambers or difference SF in equipment₆Multiple air chambers in equipment are inflated.8 or more gas can be connected simultaneously Bottle, accelerates SF₆Gas vaporization speed, greatly improves transfer of gas capacity and transfer rate, so as to shorten inflationtime.

(3) increase valve to control the circulation and isolation of gas in each connecting portion, its pipeline sealing is effectively ensured Energy；The multiple valves of free-open-close, can change gas mode of movement in the case of working gas treatment is not suspended.

In other embodiments, required according to actually required tolerance, joint can be DN40 copper joints or be DN20 copper joints, i.e. joint all select small-bore joint, or all select bigbore joint.And the present embodiment is Both small-bore joint had been have selected, bigbore joint had been have selected again, so as not to the use of same environment occasion.

Embodiments of the present invention not limited to this, the above of the invention are known according to the ordinary skill of this area Know and customary means, under the premise of without departing from above-mentioned basic fundamental thought of the invention, the joint bore of the present invention, commonly connected pipe Position (distribution of the joint on commonly connected pipe) on commonly connected pipe of bore, interface, the species of valve, the material of joint Matter also has other embodiments.Therefore the present invention can also make modification, replacement or the change of other various ways, fall Within rights protection scope of the present invention.

Claims

1. a kind of efficient SF₆Gas treatment instrument, it is characterised in that：It includes the firm banking of tabular, on firm banking Commonly connected pipe and at least 4 be used for connect SF₆The joint of equipment air chamber and evacuator, two pipes of the commonly connected pipe End seal is closed, and is provided with least 4 interfaces on the pipe shaft of the commonly connected pipe, and the joint correspondence is connected on interface, described Joint is DN40 copper joints or is DN20 copper joints, in the DN40 copper joints or DN20 copper joints Valve is provided with, the valve adopts ball valve, described DN40 copper joints or DN20 copper joints respectively mainly by for connecting Meet SF₆The straight-through connecting piece of equipment air chamber and evacuator, self-sealing head and the ball valve integrally welded composition successively, can use Multiple stage evacuator is by being connected to the efficient SF₆Simultaneously to a SF on the joint of gas treatment instrument₆It is multiple in equipment Air chamber or difference SF₆Multiple air chambers in equipment carry out gas recovery and evacuation, or can use many bottles of SF₆Or N₂Gas Simultaneously to a SF₆Multiple air chambers or difference SF in equipment₆Multiple air chambers in equipment are inflated.