CN207751651U - A kind of insulating joint leakage detecting structure - Google Patents

Abstract

The utility model is related to a kind of insulating joint leakage detecting structures, including the first pipe fitting and the second pipe fitting, the junction of first pipe fitting and the second pipe fitting is provided with seal assembly, the junction is also arranged with fixing sleeve, the cavity of a cladding seal assembly is formed between the fixing sleeve and the first pipe fitting, the second pipe fitting, it is equipped with insulating element between the fixing sleeve and the second pipe fitting, is penetrated through on the fixing sleeve and is provided with leak hunting aperture, the fixing sleeve cavity is in communication with the outside by the leak hunting aperture.The utility model has the characteristics that detection is easy, efficient, accuracy rate is high, safety is good.

Description

A kind of insulating joint leakage detecting structure

Technical field

The utility model is related to a kind of insulating joint, more particularly to a kind of insulating joint leakage detecting structure.

Background technology

With the growth requirement of the progress and urban modernization construction of social industry, oil field, chemical industry and natural gas etc. are transregional Domain conveying become more and more frequently, thus need to be laid with very long conveyance conduit, however, these buried long-distance transport pipes for a long time by The electrochemical corrosion caused by pipeline to the stray electrical current in the strong corrosion of external soil and interior media, especially soil, The service life of pipeline is substantially reduced, and in pipe protection measure, other than doing protective layer protection, also take based on electricity The cathode protection measure of the principles of chemistry.

In the prior art, pipeline cathodic protection system is most commonly seen effective, and pipeline electrochemistry can be effectively prevent rotten Erosion, and insulating joint is as a critical piece in pipeline cathodic protection system, effect is that insulating joint both ends pipeline is electric Insulation prevents the loss of cathodic protection current, improves pipeline cathodic protection effect, while insulating joint is installed in pipeline, also There should be good sealing performance, can prevent interior media from leaking.

It needs to carry out water pressure test for strength and gas leakage test after the completion of insulating joint manufacture.Carrying out hydraulic pressure intensity When experiment, whether generally use observation test pressure reduces, and judges whether product leaks；It is usual when carrying out air seal experiment Using leakage end smear suds, observation suds whether bubbling, judge whether product leaks.Above-mentioned strength test detection side Method is for large-caliber product, and because of minor leakage, test pressure changes unobvious, is not easy to judge whether product leaks, be additionally carried out When air-tight test, reviewer's close-ups, there is also security risks, and may because leakage end apart from sealing position compared with Far, leakage path is longer, and minor leakage cannot be found in time, or even in defined test period, leakage is not exhibited by, Product leakage is accidentally determined as qualified products.

Chinese invention patent CN201210377062.5 disclose a kind of combustion gas insulating joint air-tightness detection device and Method, combustion gas insulating joint air-tightness detection device it is characterized in that：Frame-type testing jig upper end is horizontally fixed with cuboid Biaxial type hydraulic cylinder is vertically fixed in support base, frame-type testing jig side, and biaxial type hydraulic cylinder upper end connects upper sprocket wheel, biaxial type Hydraulic cylinder lower end connects lower sprocket, and biaxial type hydraulic cylinder forms annular connection by roller chain between upper sprocket wheel and lower sprocket； Horizontal fixed rear flange hydraulic cylinder, the telescopic rod of rear flange hydraulic cylinder connect left clamp holder by connector sleeve in cuboid support base, Left clamp holder is fixed on by axle sleeve on cuboid support base, and the right end of cuboid support base has a right clamp holder, right clamp holder, left clamp holder, Axle sleeve and the coaxially formed one of rear flange hydraulic cylinder；Insulating joint to be measured is clamped by right clamp holder, left clamp holder, passes through rear flange hydraulic pressure The telescopic rod of cylinder makes insulating joint clamp, it has the characteristics that safety is good, efficient.It is to insulate but in the patent of invention Connector increases detection device, and detection structure is complicated, process is more, inefficient, still there is larger room for improvement.

Invention content

For overcome the deficiencies in the prior art, the utility model provides a kind of insulating joint leakage detecting structure, including the first pipe The junction of part and the second pipe fitting, first pipe fitting and the second pipe fitting is provided with seal assembly, and the junction is additionally provided with solid Fixed set, forms the cavity of a cladding seal assembly between the fixing sleeve and the first pipe fitting, the second pipe fitting, the fixing sleeve with Insulating element is equipped between second pipe fitting, on the fixing sleeve perforation be provided with leak hunting aperture, the leak hunting aperture is by the fixing sleeve Cavity is in communication with the outside.

As a further improvement of the above technical scheme：

The seal assembly includes insulation spacer and sealing ring.

In the utility model, the seal assembly is the combination of insulation spacer and sealing ring, and sealing ring is rubber material, When assembly, by forcing press by sealing ring compressive deformation, reaches the sealing deformation of requirement, seal.

The leak hunting aperture is close to sealing ring.

In the utility model, for the leak hunting aperture closer to sealing ring, the channel of detection is shorter, and the reaction time of detection also gets over It is short, be more conducive to detect whether seal member has leakage.

It is provided with test(ing) medium entrance on the end socket of one of first pipe fitting and the second pipe fitting, an examination is preferably set Test medium inlet.

In the utility model, there are one the liquid or gas of pressure testing for setting on the end socket of the first pipe fitting or the second pipe fitting Gas or liquid by this test(ing) medium entrance can be entered pipe fitting and by a kind of insulating joint by body feed pipe inlet Leakage detecting structure, to test whether sealing ring is fully sealed.

The leak hunting aperture is set in the fixing sleeve outer circle, and the leak hunting aperture is circular hole.

In the utility model, the detection hole is set in the outer circle of fixing sleeve, is more suitable for connection external hose Or directly observe, it sets the leak hunting aperture to circular hole, can be adapted for existing common circular hose.

The insulating element is connect with the insulation spacer by the sealing ring.The insulating element include insulation sleeve, Boss insulation sleeve and boss insulation spacer.

In the utility model, the insulation sleeve and felt pad do not seal, and effect is by the first pipe fitting and second Pipe will be electrically insulated, and eliminate electrochemical corrosion of the stray electrical current to pipeline.

One end of the fixing sleeve is equipped with boss, and the boss is equipped between the boss and second pipe fitting and is insulated Set, the insulation sleeve are connect with the boss insulation sleeve by the boss insulation spacer.

In the utility model, it sets insulation sleeve and felt pad to projection shape, the nested type between being more suitable for Connection.

Compared with prior art, the utility model has the advantage of：

Since a kind of insulating joint leakage detecting structure opens up a leak hunting aperture, the leak detection on fixing sleeve close to sealing position Hole is penetrated through extraneous with fixing sleeve cavity, and when experiment welds at the both ends of the first pipe fitting and the second pipe fitting with end socket, that is, forms one A closed container, from one end end socket injection testing medium for offering test(ing) medium entrance, because detection hole is near sealing ring, It is leaked out from leak hunting aperture if any minor leakage, liquid or gas when carrying out water pressure test for strength or air seal is tested, it can Quickly to judge the leakproofness of insulating joint；Simultaneously when carrying out air seal experiment, insulating joint to be measured is put into special explosion-proof In hole, leak hunting aperture is connected with hose, hose stretches into water, observes whether hose has bubble to emerge by monitoring device, judges The leakage situation of product is not required to testing staff close to observation, ensures the safety of testing staff's operation.The utility model is not only simple Change detection structure, saved cost, also improves detection working efficiency and accuracy.

Description of the drawings

Fig. 1 is the structural schematic diagram of the utility model.

Fig. 2 is structural schematic diagram when the utility model is used.

1, the first pipe fitting；2, the second pipe fitting；3, fixing sleeve；4, insulating element；5, insulation spacer；6, sealing ring；7, it hunts leak Hole；8, test(ing) medium entrance；23, end socket；31, boss；41, boss insulation sleeve；42, boss insulation spacer, 43, insulation sleeve.

Specific implementation mode

The utility model is described in further detail below in conjunction with Figure of description and specific embodiment.

Fig. 1 shows a kind of specific embodiment of insulating joint leakage detecting structure of the utility model, including the first pipe fitting 1, Two pipe fittings 2,

The junction of first pipe fitting, 1 and second pipe fitting 2 is provided with seal assembly, and the junction is also arranged with fixation Set 3 forms the cavity of a cladding seal assembly, the fixing sleeve between the fixing sleeve 3 and the first pipe fitting 1, the second pipe fitting 2 3 and second are equipped with insulating element 4 between pipe fitting 2, on the fixing sleeve perforation be provided with leak hunting aperture 7, the leak hunting aperture 7 will be described 3 cavity of fixing sleeve is in communication with the outside.

In the utility model, the seal assembly is the combination of insulation spacer and sealing ring, and sealing ring is rubber material, When assembly, by forcing press by sealing ring compressive deformation, reaches the sealing deformation of requirement, seal.

Leak hunting aperture 7 described in the utility model is by the extraneous cavity perforation with inside fixing sleeve 3, by the first pipe fitting 1 when experiment It is welded with the both ends end socket 23 of the second pipe fitting 2, that is, forms a closed container, one of first pipe fitting, 1 and second pipe fitting 2 End socket on setting there are one test(ing) medium entrance 8, from one end end socket injection testing medium for offering test(ing) medium entrance, because Leak hunting aperture 7 is near sealing ring 6, when carrying out water pressure test for strength or air seal and testing if any minor leakage, liquid or Gas is leaked out from leak hunting aperture 7, can quickly judge a kind of leakproofness of insulating joint leakage detecting structure.

Simultaneously when carrying out air seal experiment, insulating joint to be measured is put into special explosion-proof hole, by leak hunting aperture 7 and hose It is connected, hose stretches into water, observes whether hose has bubble to emerge by monitoring device, judges the leakage situation of product, be not required to Testing staff ensures the safety of testing staff's operation close to observation.The utility model not only simplifies detection structure, saves Cost also improves detection working efficiency.

In the present embodiment, the leak hunting aperture 7 is set in 3 outer circle of the fixing sleeve, is penetrated through extraneous with 3 cavity of fixing sleeve, Quick leak-checking can be carried out to product.

In the present embodiment, the leak hunting aperture 7 is circular hole, and such design facilitates 7 external typical circular hose of leak hunting aperture, when When carrying out air seal experiment, to ensure personnel safety, leak hunting aperture 7 is connected, and into the water by hose with hose, passes through prison Control equipment observation hose whether there is bubble to emerge, judge the leakage situation of product, so there is no need to testing staff close to observation, Ensure the safety of testing staff's operation.

In the utility model, the insulating element 4 includes insulation sleeve 43, boss insulation sleeve 41 and boss insulation spacer 42. The insulating element 4 is connect with the insulation spacer 5 by the sealing ring 6.One end of the fixing sleeve 3 is equipped with boss 31, The boss insulation sleeve 41 is equipped between the boss 31 and second pipe fitting 2, the insulation sleeve 43 insulate with the boss Set 41 is connected by the boss insulation spacer 42.In the utility model, the insulation sleeve and felt pad do not seal, Effect is that the first pipe fitting and the second pipe will be electrically insulated, to eliminate electrochemical corrosion of the stray electrical current to pipeline.The utility model In, set insulation sleeve and felt pad to projection shape, the connection between being more suitable for.

In order to preferably illustrate the structure and advantageous effect of the utility model, here, being carried out to its operation principle detailed Explanation.

As shown in Figure 1, when the utility model carries out liquid strength leakage test, test(ing) medium that liquid passes through end socket 23 Entrance 8 injects, if there is liquid to be overflowed from leak hunting aperture 7, proves that 6 seal failure of sealing ring, the product are unqualified；If leak hunting aperture does not have There is liquid spilling, illustrates that liquid is not passed through the sealing surface of sealing ring 6, which is qualified.

When the utility model carries out air seal experiment, which is put into special anti-explosion container or hole, outside leak hunting aperture 7 Connect a hose and by hose into the water, then from test(ing) medium entrance 8 inject gas, by observe water in hose whether have Bubble is emerged, judge product whether leakage, can also be observed by monitoring device, do not need testing staff lean on close up It examines, to ensure the safety of testing staff's operation.

As shown in Fig. 2, after insulating joint pressure testing qualification, both ends end socket 23 is cut off, and leak hunting aperture 7 is sealed with plug It is stifled.In actual use, then by the first pipe fitting 1 and 2 both ends of the second pipe fitting it is welded with pipeline, insulating joint outer surface and pipe Line does preservative treatment together, is mostly used in buried pipeline.

Although the utility model has been disclosed with preferred embodiment as above, it is not limited to the utility model.It is any Those skilled in the art, in the case where not departing from technical solutions of the utility model range, all using the disclosure above Technology contents many possible changes and modifications are made to technical solutions of the utility model, or be revised as the equivalent of equivalent variations Embodiment.Therefore, every content without departing from technical solutions of the utility model, according to the utility model technical spirit to above real Any simple modifications, equivalents, and modifications that example is done are applied, should all be fallen in the range of technical solutions of the utility model are protected.

Claims (9)

1. a kind of insulating joint leakage detecting structure, including the first pipe fitting（1）With the second pipe fitting（2）, first pipe fitting（1）With second Pipe fitting（2）Junction be provided with seal assembly, the junction is additionally provided with fixing sleeve（3）, the fixing sleeve（3）With the first pipe Part（1）, the second pipe fitting（2）Between formed cladding seal assembly cavity, the fixing sleeve（3）With the second pipe fitting（2）Between set There is insulating element（4）, which is characterized in that the fixing sleeve（3）Upper perforation is provided with leak hunting aperture（7）, the leak hunting aperture（7）By institute State fixing sleeve（3）Cavity is in communication with the outside.

2. a kind of insulating joint leakage detecting structure according to claim 1, which is characterized in that the seal assembly includes exhausted Edge gasket（5）And sealing ring（6）.

3. a kind of insulating joint leakage detecting structure according to claim 2, which is characterized in that the leak hunting aperture（7）Close to close Seal ring（6）.

4. a kind of insulating joint leakage detecting structure according to one of claim 1-3, which is characterized in that first pipe fitting （1）With the second pipe fitting（2）One of end socket（23）On be provided with test(ing) medium entrance（8）.

5. a kind of insulating joint leakage detecting structure according to one of claim 1-3, which is characterized in that the leak hunting aperture（7） Set on the fixing sleeve（3）In outer circle.

6. a kind of insulating joint leakage detecting structure according to one of claim 1-3, which is characterized in that the leak hunting aperture（7） For circular hole.

7. a kind of insulating joint leakage detecting structure according to claim 2 or 3, which is characterized in that the insulating element（4）With The insulation spacer（5）Pass through the sealing ring（6）Connection.

8. a kind of insulating joint leakage detecting structure according to one of claim 1-3, which is characterized in that the insulating element （4）Including insulation sleeve（43）, boss insulation sleeve（41）With boss insulation spacer（42）.

9. a kind of insulating joint leakage detecting structure according to claim 8, which is characterized in that the fixing sleeve（3）One end Equipped with boss（31）, the boss（31）With second pipe fitting（2）Between be equipped with the boss insulation sleeve（41）, the insulation Set（43）With the boss insulation sleeve（41）Pass through the boss insulation spacer（42）Connection.