CN202295755U

CN202295755U - Binding film for gas insulated substation (GIS) electric gas tightness detection and binding structure thereof

Info

Publication number: CN202295755U
Application number: CN201120377548XU
Authority: CN
Inventors: 肖湘莹
Original assignee: China XD Electric Co Ltd
Current assignee: China XD Electric Co Ltd
Priority date: 2011-09-28
Filing date: 2011-09-28
Publication date: 2012-07-04
Anticipated expiration: 2021-09-28

Abstract

The utility model provides a binding film for gas insulated substation (GIS) electric gas tightness detection and a binding structure thereof. The binding film comprises a body film layer and a plurality of one-way gas nipples embedded in the body film layer. The gas nipples are embedded in the body film layer; during detection, a probe stretches into the one-way gas nipples so as not to damage the body film layer; and therefore, the binding film can be recycled. The binding film is standard in binding operation and low in labor intensity and can be operated by a single person.

Description

The leak detection of GIS electricity air-tightness is with wrapping film and wrapping structure thereof

[technical field]

The utility model relates to the leak detection of a kind of GIS electricity air-tightness with wrapping film and wrapping structure thereof.

[background technology]

The air-tightness of Cubicle Gas-Insulated Switchgear (GIS) product is the pacing factor of product operation work.The air-tightness of check product must be advanced strict leak detection experiment and obtain checking.Wrapping leak detection position is the indispensable link of leak detection experiment.At present, the wrapping of product utilizes plastic paper and pressure sensitive adhesive tape to carry out basically.There is following drawback:

1. after the disposable wrapping, wrapper material can not reuse.

2. materials, the quality of same area wrapping vary with each individual.

3. wrapping labour intensity is big, generally needs two people operation.

The leak detection wrapping of Cubicle Gas-Insulated Switchgear product; The wrapping at leak detection position, one place: with suitably big or small plastic paper, twine cylinder fitting surface at least 1.5 circles, at least 2 circles are twined with pressure sensitive adhesive tape again in both sides; Form a sealed air chamber, generally need two people operation.During leak detection, use SF ₆The probe of gas leakage detector is poked plastic paper, carries out the detection of gas concentration.This wrapping method, material therefor all are disposable, and plastic paper is poked can't reuse.The viscosity of adhesive tape belongs to disposable consumption on plastic paper, can't break away from, and is difficult to utilize again.

[utility model content]

The purpose of the utility model provides the leak detection of a kind of GIS electricity air-tightness with wrapping film and wrapping structure thereof, to solve the problems of the technologies described above.

To achieve these goals, the leak detection of a kind of GIS electricity of the utility model air-tightness is adopted following technical scheme with the wrapping film:

The leak detection of a kind of GIS electricity air-tightness comprises the body rete and is embedded in several the unidirectional valves on the body rete with the wrapping film.

The utility model further improves and is: be inlaid with at least 6 unidirectional valves on the body rete.

The utility model further improves and is: several unidirectional valves are uniformly distributed on the body rete.

The utility model further improves and is: the body rete is rectangle or is circular.

The utility model further improves and is: body rete opposed edges place is provided with the bonding head of a pair of nylon.

To achieve these goals, a kind of wrapping structure of the utility model adopts following technical scheme:

A kind of wrapping structure, the body rete is rectangle, and the opposed edges place is provided with the bonding head of a pair of nylon; The bonding head of the nylon at body rete two ends bonding each other forms a face of cylinder, is coated on GIS place to be detected, and elastic cord is tightened the body rete, between body rete and GIS, forms a sealed air chamber.

The utility model further improves and is: the two ends of elastic cord are provided with the bonding head of a pair of nylon.

A kind of wrapping structure, the body rete is rounded; The body rete is coated on GIS place to be detected, and elastic cord is tightened the body rete, between body rete and GIS, forms a sealed air chamber.

With respect to prior art, the utlity model has following advantage: the utility model is through inlaying a plurality of unidirectional valves on the body rete, and during detection, probe stretches into from unidirectional valve and can not destroy the body rete; Make the utility model wrapping film to reuse; The utility model wrapping film wrapping working specification, labour intensity is little, single can the operation.

[description of drawings]

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the structural representation of another preferred embodiment of the utility model;

Fig. 3 is the structural representation of another preferred embodiment of the utility model.

[specific embodiment]

See also Fig. 1 to shown in Figure 3; The leak detection of a kind of GIS electricity of the utility model air-tightness is high slightly with the body rete 10 intensity ratio plastics intensity of wrapping film 1; Tumble in several unidirectional valves 2 above the body rete 10; This unidirectional valve 2 and 10 hot pressing of body rete together, this unidirectional valve 2 keeps leak tightness under the barometric pressure situation.The gas leak detection instrument probe gets into the wrapping air chamber through the unidirectional valve on the wrapping film 12, need not puncture the body rete 10 of wrapping film 1, keeps the integraty of this part material, so that can reuse.Wrapping film 1 relative two ends are provided with bonding 5 of a pair of nylon; 1 need of wrapping film are around one week of circumferencial direction, and two ends bond together with bonding 5 of nylon, guarantee that it forms a complete face of cylinder that meets seal request (non-leakage under normal pressure).

In the time of wrapping, utilizing has big elastic brace web 3 to tighten wrapping face, and elastic cord 3 two ends also bond together with bonding 4 of nylon.It is more only to need the two ends that cylinder is wrapped up face are wound with one circuit, and bonding 4 of two ends nylon need to twine bond together with regard to failure-free and form a sealed air chamber.

To wrapping position with a kind of dimensions, fixing a kind of wrapping film 1 size and elastic cord 3 length.Can be according to the difference wrapping spot size and the constructional feature of every kind of product, the corresponding wrapping of design structure.Unidirectional valve 2 quantity are generally 6, are uniformly distributed on the body rete 10, to guarantee to detect the SF of all directions on the circumference ₆Gas concentration.Wrapping film 1 can be wrapped up the position according to difference and be arranged to shown in oblong (Fig. 1, shown in 2), circular (Fig. 3).

During wrapping, should be with the cemented side seam of wrapping face, binder preferably towards the top.

Because the structure size of product is not quite similar, the mounting structure on the identical product is difference to some extent again.Therefore can be according to different by the wrapping structure, the size of change band, wrapping face, valve, nylon bonding plane size etc.

Claims

1. GIS electricity air-tightness leak detection is characterized in that with the wrapping film, comprises body rete (10) and is embedded in several the unidirectional valves (2) on the body rete (10).

2. a kind of GIS electricity air-tightness according to claim 1 leak detection is characterized in that with the wrapping film, is inlaid with at least 6 unidirectional valves (2) on the body rete (10).

3. a kind of GIS electricity air-tightness according to claim 1 leak detection is characterized in that with the wrapping film several unidirectional valves (2) are uniformly distributed on the body rete (10).

4. a kind of GIS electricity air-tightness according to claim 1 leak detection is characterized in that with the wrapping film body rete (10) is rectangle or is circular.

5. a kind of GIS electricity air-tightness according to claim 1 leak detection is characterized in that with the wrapping film body rete (10) opposed edges place is provided with the bonding head of a pair of nylon.

6. it is characterized in that with the film formed wrapping structure of wrapping body rete (10) is rectangle according to each described a kind of GIS electricity air-tightness leak detection in the claim 1 to 5, the opposed edges place is provided with the bonding head of a pair of nylon; The bonding head of the nylon at body rete (10) two ends bonding each other forms a face of cylinder, is coated on GIS place to be detected, and elastic cord (3) is tightened body rete (10), between body rete (10) and GIS, forms a sealed air chamber.

7. wrapping structure according to claim 6 is characterized in that, the two ends of elastic cord (3) are provided with the bonding head of a pair of nylon.

8. it is characterized in that with the film formed wrapping structure of wrapping body rete (10) is rounded according to each described a kind of GIS electricity air-tightness leak detection in the claim 1 to 5; Body rete (10) is coated on GIS place to be detected, and elastic cord (3) is tightened body rete (10), between body rete (10) and GIS, forms a sealed air chamber.

9. wrapping structure according to claim 8 is characterized in that, the two ends of elastic cord (3) are provided with the bonding head of a pair of nylon.