CN204254140U - The seal clamp of pipe fitting - Google Patents
The seal clamp of pipe fitting Download PDFInfo
- Publication number
- CN204254140U CN204254140U CN201420642813.6U CN201420642813U CN204254140U CN 204254140 U CN204254140 U CN 204254140U CN 201420642813 U CN201420642813 U CN 201420642813U CN 204254140 U CN204254140 U CN 204254140U
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- clamp
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- seal
- pipeline
- injecting glue
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- 239000003292 glue Substances 0.000 claims description 59
- 238000012423 maintenance Methods 0.000 abstract description 24
- 238000007789 sealing Methods 0.000 abstract description 11
- 230000008439 repair process Effects 0.000 abstract description 10
- 238000009434 installation Methods 0.000 abstract description 9
- 239000012530 fluid Substances 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000000725 suspension Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 33
- 239000004033 plastic Substances 0.000 description 19
- 229920003023 plastic Polymers 0.000 description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 17
- 229910000831 Steel Inorganic materials 0.000 description 16
- 239000010959 steel Substances 0.000 description 16
- 238000002347 injection Methods 0.000 description 15
- 239000007924 injection Substances 0.000 description 15
- 239000000565 sealant Substances 0.000 description 15
- 239000003921 oil Substances 0.000 description 13
- 230000008569 process Effects 0.000 description 13
- 239000007788 liquid Substances 0.000 description 11
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 10
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 10
- 230000006378 damage Effects 0.000 description 10
- 239000007789 gas Substances 0.000 description 10
- 239000000126 substance Substances 0.000 description 10
- 238000009423 ventilation Methods 0.000 description 8
- 230000008859 change Effects 0.000 description 7
- 230000001788 irregular Effects 0.000 description 7
- 239000002131 composite material Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 6
- 229910000975 Carbon steel Inorganic materials 0.000 description 5
- 206010013647 Drowning Diseases 0.000 description 5
- 208000027418 Wounds and injury Diseases 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 238000009412 basement excavation Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 5
- 235000014121 butter Nutrition 0.000 description 5
- 239000010962 carbon steel Substances 0.000 description 5
- 208000014674 injury Diseases 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 238000005498 polishing Methods 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- 238000003723 Smelting Methods 0.000 description 4
- 239000010779 crude oil Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000002360 explosive Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 206010053615 Thermal burn Diseases 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
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- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
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- 239000007787 solid Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The utility model provides a kind of seal clamp of pipe fitting, sealing jig comprises multiple clamp circumferentially spliced successively, and between multiple clamp, form body parcel space, damaged pipe to be repaired is arranged in body parcel space, and the two ends of clamp are connected with the harmless seal of tube at damaged pipe two ends respectively; Wherein, the end of clamp is provided with expansion board, and expansion board extends along the axis of clamp.Like this, just make this pipe fitting seal clamp, form seal space between damaged pipe and harmless pipe, be arranged in sealing space by this damaged pipe, this pipe fitting seal clamp just can hinder the fluid in pipeline to flow out, and then plays the effect avoiding fluid leakage.Pipe fitting seal clamp structure in the utility model is simple, easy for installation, can when pipeline not emptying, do not get angry, the leak point of damaged pipe is keeped in repair fast, effectively avoid pipeline to stop transport for a long time and keep in repair the production suspension induced losses that causes, provide working efficiency, reduce maintenance cost.
Description
Technical field
The utility model relates to pipe fitting transportation art, more specifically, relates to a kind of seal clamp of pipe fitting.
Background technique
At present, SRPE widely, is mainly used in conveying low pressure clear water, oil-polluted water and Room-temperature low-pressure Crude Oil Transportation etc. in the use in oil field.The type pipeline is compared with steel pipeline: have the advantages such as corrosion-resistant, frictional resistance is little, thermal conductivity is little, coefficient of linear expansion is little.
But because its interface mode of adjacent steel skeleton plastic clad pipe is electric smelting connection or Flange joint, the degree of symmetry of this Placement requires higher, as do not reached requirement, easily causing interface seepage, affecting pipeline construction quality and working life.
In addition, when pipeline breakage maintenance, a kind of mode is, after changing whole of damaged pipeline, re-start electric smelting and connect or carry out secondary electric smelting connection to leaky junction position; Another kind of mode is the damaged pipelines of removable parts, then after new work joint, carries out electric smelting or Flange joint.
Because the temperature of pipeline fed sheet of a media becomes, presses the reasons such as change and ground temperature change that the contracting of the longitudinal direction of pipeline all can be caused to rise, the restriction of the factor such as work apparatus, site environment of simultaneously being constructed, the circularity of pipeline and the clean level of interface are difficult to be guaranteed, thus cause pipe joint leakage to be difficult to avoid.
Secondly, particularly outstanding at extremely frigid zones in the situation of plastic composite pipe joint of steel skeleton place easy to leak, if for part long-distance transport pipes stopping production emptying, emptying amount is large, the time is long, stopping transportation production suspension induced losses is comparatively large, in the winter time as maintenance also can cause pipeline frozen block accident not in time.
Model utility content
The utility model aims to provide a kind of seal clamp of pipe fitting, to solve the problem larger to the pipe fitting maintenance loss in leakage line of the prior art.
For solving the problems of the technologies described above, the utility model provides a kind of seal clamp of pipe fitting, seal clamp comprises multiple clamp circumferentially spliced successively, and between multiple clamp, form body parcel space, damaged pipe to be repaired is arranged in body parcel space, and the two ends of clamp are connected with the harmless seal of tube at damaged pipe two ends respectively; Wherein, the end of clamp is provided with expansion board, and expansion board extends along the axis of clamp.
Further, clamp comprises parcel and is arranged on the positioning convex at parcel two ends, and parcel is arranged around damaged pipe, and positioning convex is arranged around harmless pipe, and positioning convex is connected with the harmless seal of tube.
Further, the side near harmless pipe of positioning convex is provided with injecting glue groove, and positioning convex is provided with hole for injecting glue, and hole for injecting glue is communicated with injecting glue groove.
Further, parcel and positioning convex are arc, and positioning convex extends towards the inner side of clamp.
Further, parcel is provided with hole for injecting glue.
Further, clamp is provided with connecting plate, adjacent clamp is connected by respective connecting plate.
Further, connecting plate is provided with attachment hole, adjacent clamp is connected by the attachment hole on bolt and clamp.
Further, connecting plate is arranged on the outside of clamp, and connecting plate extends along the axis of clamp.
Further, after two adjacent clamp splicings, injecting glue receiving groove between the connecting plate of two clamps and the outer wall of clamp, is formed.
Further, expansion board be arranged on positioning convex away from body parcel space one end.
Pipe fitting seal clamp in the utility model is spliced successively by multiple clamp, and damaged pipe to be repaired is arranged in body parcel space, and the two ends of clamp are connected with the harmless seal of tube at damaged pipe two ends respectively.Like this, just make this pipe fitting seal clamp, form seal space between damaged pipe and harmless pipe, be arranged in sealing space by this damaged pipe, this pipe fitting seal clamp just can hinder the fluid in pipeline to flow out, and then plays the effect avoiding fluid leakage.
Pipe fitting seal clamp structure in the utility model is simple, easy for installation, can when pipeline not emptying, do not get angry, the leak point of damaged pipe is keeped in repair fast, effectively avoid pipeline to stop transport for a long time and keep in repair the production suspension induced losses that causes, provide working efficiency, reduce maintenance cost.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 diagrammatically illustrates the structural representation in working pit in the utility model and drainage hole;
Fig. 2 diagrammatically illustrates the fundamental diagram of the gas extracted out in working pit;
Fig. 3 diagrammatically illustrates the structural representation of pipeline;
Fig. 4 diagrammatically illustrates the structural representation of pipe fitting seal clamp;
Fig. 5 diagrammatically illustrates the structural representation of the clamp in an embodiment;
Fig. 6 diagrammatically illustrates the A portion enlarged view in Fig. 5;
Fig. 7 diagrammatically illustrates the schematic cross-section of the clamp in Fig. 5;
Fig. 8 diagrammatically illustrates the structural representation of the clamp in another embodiment; And
Fig. 9 diagrammatically illustrates the schematic cross-section of the clamp in Fig. 8.
Reference character in figure:
1, air-suction cover; 2, Universal-head;
3, inhaling hose; 4, blower fan;
5, loss pipe; 6, solid dirt felt;
7, support; 8, oil removal net;
9, the run-down point of fault pipeline;
10, clamp; 11, parcel;
12, positioning convex; 13, injecting glue groove;
14, hole for injecting glue; 20, connecting plate;
21, attachment hole; 30, expansion board;
40, pipeline; 41, damaged pipe;
42, harmless pipe; 50, working pit;
60, drainage hole.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
According to an aspect of the present utility model, provide a kind of seal clamp of pipe fitting, please refer to Fig. 1 to Fig. 9, seal clamp comprises multiple clamp 10 circumferentially spliced successively, and between multiple clamp 10, form body parcel space, damaged pipe 41 to be repaired is arranged in body parcel space, and the two ends of clamp 10 are tightly connected with the harmless pipe 42 at damaged pipe 41 two ends respectively; Wherein, the end of clamp 10 is provided with expansion board 30, and expansion board 30 extends along the axis of clamp 10.
Pipe fitting seal clamp in the utility model is spliced successively by multiple clamp 10, and damaged pipe 41 to be repaired is arranged in body parcel space, and the two ends of clamp 10 are tightly connected with the harmless pipe 42 at damaged pipe 41 two ends respectively.Like this, just make this pipe fitting seal clamp, form seal space between damaged pipe 41 and harmless pipe 42, be arranged in sealing space by this damaged pipe 41, this pipe fitting seal clamp just can hinder the fluid in pipeline to flow out, and then plays the effect avoiding fluid leakage.
Pipe fitting seal clamp structure in the utility model is simple, easy for installation, can when pipeline 40 not emptying, do not get angry, the leak point of damaged pipe 41 is keeped in repair fast, effectively avoid pipeline to stop transport for a long time and keep in repair the production suspension induced losses that causes, provide working efficiency, reduce maintenance cost.
Preferably, clamp 10 comprises parcel 11 and is arranged on the positioning convex 12 at parcel 11 two ends, and parcel 11 is arranged around damaged pipe 41, and positioning convex 12 is arranged around harmless pipe 42, and positioning convex 12 and harmless pipe 42 are tightly connected.Like this, be conducive to realizing the sealing before pipe fitting seal clamp and pipeline 40.
Preferably, the side near harmless pipe 42 of positioning convex 12 is provided with injecting glue groove 13, and positioning convex 12 is provided with hole for injecting glue 14, and hole for injecting glue 14 is communicated with injecting glue groove 13.
Preferably, hole for injecting glue 14 is arranged on the bottom of injecting glue groove 13.Like this, after positioning convex 12 and harmless pipe 42 being fitted, injecting glue in hole for injecting glue 14, this glue flows in injecting glue groove 13, just can realize being tightly connected between positioning convex 12 and harmless pipe 42.
According to actual conditions, seal ring also can be utilized to realize being tightly connected between positioning convex 12 and harmless pipe 42.
Preferably, parcel 11 and positioning convex 12 are arc, and positioning convex 12 extends towards the inner side of clamp 10.Now, the diameter for damaged pipe 41 is as shown in Figure 3 greater than the situation of the diameter of harmless pipe 42, and when the diameter of damaged pipe 41 is less than the diameter of harmless pipe 42, positioning convex 12 extends towards the outside of clamp 10.
Preferably, parcel 11 is provided with hole for injecting glue 14.After by the installation of pipe fitting seal clamp, in this hole for injecting glue 14, inject glue, just can fill the gap between clamp 10 and damaged pipe 41, and then be conducive to the sealing of convection cell.
Preferably, clamp 10 is provided with connecting plate 20, adjacent clamp 10 is connected by respective connecting plate 20.Preferably, the both sides of the opening of clamp 10 are provided with this connecting plate 20.
Preferably, connecting plate 20 is provided with attachment hole 21, adjacent clamp 10 is connected by the attachment hole 21 on bolt and clamp 10.Like this, the connection between clamp 10 can be realized more easily.
Preferably, connecting plate 20 is arranged on the outside of clamp 10, and connecting plate 20 extends along the axis of clamp 10.Like this, be conducive to realizing the connection between clamp 10.
Preferably, after two adjacent clamps 10 splice, between the connecting plate 20 of two clamps 10 and the outer wall of clamp 10, injecting glue receiving groove is formed.Like this, after being coupled together by clamp 10, in this injecting glue receiving groove, inject glue, just can realize the sealing of convection cell further, prevent the fluid revealed in damaged pipe 41 from releasing in the joint gap between clamp 10.
Preferably, expansion board 30 be arranged on positioning convex 12 away from body parcel space one end.In order to make the connection between clamp 10 and harmless pipe 42 more tight, reliable, the application is provided with expansion board 30, by making this expansion board 30 fit tightly with the outer wall of harmless pipe 42, and then makes the connection between clamp and harmless pipe 42 more reliable.Preferably, the diameter of expansion board 30 is identical with the diameter of positioning convex 12.
According to another aspect of the present utility model, provide a kind of pipe fitting encapsulating method, the seal clamp that pipe fitting encapsulating method applies above-mentioned pipe fitting seals, and this pipe fitting encapsulating method comprises: step one: the outside parcel of seal clamp being wrapped in damaged pipe is positioned at body parcel space to make damaged pipe; Step 2: the positioning convex of seal clamp is connected the damaged seal of tube is wrapped up in space at body with the harmless seal of tube at damaged pipe two ends.
Preferably, before step one, pipe fitting encapsulating method also comprises: offer working pit at the damaged pipe place on ground and expose to make damaged pipe; Offer drainage hole 60 on the ground to introduce in drainage hole 60 to make the liquid from damaged pipe internal leakage in working pit.
Preferably, before step one, pipe fitting encapsulating method also comprises: a part for vacuum elements is arranged in working pit to make to extract out in working pit from the gas of damaged pipe internal leakage.
The utility model is according to the feature of SRPE at extremely frigid zones joint easy to leak, a kind of new maintenance process method of research and development, not emptying is implemented to pipeline leakage point in the basis not changing pipeline body structure, allowing pressurized maintenance of not getting angry.Need before enforcement to move towards the pipeline of composite pipe, size, reducing tee position, the key parameter situation of gate carries out analyzing and risk assessment, look for the breaking point that pipeline is possible, to all kinds of pipeline custom-made by size Special seal jig, formulate special emergency repair maintenance process scheme and special emergency treatment prediction scheme, mainly for this pipeline conveying low pressure clear water, the characteristic of oil-polluted water and Room-temperature low-pressure crude oil, the harm that assessment maintenance operation may exist: mechanical wounding, object hits, vehicle injury, poisoning, fire, blast, burn and scald, cave in, drowning etc., formulate special construction process and the counter measure, avoid risk, normative operation flow process, wherein concrete technology divides following components.
1. working pit 50
As shown in Figure 1, by 1m below excavation to pipeline buried depth, two fore sides wide apart from pipeline 1.5m, each fore side has a passway for escaping can fleeing from ground fast, excavating drainage recovery hole beyond pipeline breakage spot 3m to 5m can by the drainage of leakage liquid medium, paving antiseepage film in hole is reclaimed in drainage, and the leakage liquid flow that its capacity is greater than 2 times is taken advantage of and repaired the pipeline time in expectation or receive oil interval time.
2. forced ventilation technique
As shown in Figure 2, vacuum elements comprises air-suction cover 1, Universal-head 2, inhaling hose 3, blower fan 4, loss pipe 5, air-suction cover control support 7 and oil removal net 8 etc., Gu dirt felt 6 is arranged on the hole wall of working pit, air-suction cover 1 is positioned at emergency pipe line run-down point 9 place.
According to pipeline fed sheet of a media characteristic and leak case, monitoring identifies whether to occur explosive gas atmosphere and toxic and harmful environment, delimit risk warning region, adopt forced ventilation technique (suction type by force), electric equipment all adopts explosion-proof type, dissipation dangerous gas environment or controlled within the specific limits, constructability operator take the corresponding counter measure to enter deathtrap to carry out maintenance operation; As large in pipeline leakage amount, when dangerous situation is wayward, pipeline brownout operation or stopping transportation can control leakage rate, then takes above-mentioned technique to carry out the maintenance operation in next step portion.
3. damaged pipe 41 surfacing
Steel skeleton plastic clad pipe (damaged pipe 41) leaks because of pipeline thorn or because of other external force, its joint surface is out of shape burr, with instruments such as polishing machines, deformation place is polished, recover its cylinder type irregular figure, and joint adjacent pipeline section is repaired, make pipeline section cambered surface smooth regular.
4. make seal clamp according to joint (damaged pipe 41) form
Its joint of steel skeleton plastic clad pipe (damaged pipe 41) form is shown in Fig. 3,
Diameter using h1 as pipe joint (damaged pipe 41), the diameter using h2 as pipeline 40, the thickness using h3 as joint (damaged pipe 41), wherein, h3=1/2 (h1-h2)
Make seal clamp according to joint concrete form size quantity body, be wrapped in completely within jig by damaged joint (damaged pipe 41), for the deformation extent of pipeline 40, jig divides conventional type and trough rim extended pattern two kinds.
(1) conventional type
As shown in Figure 5, conventional type jig is two globoidal structures, divide upper dish, lower wall two-part, namely two clamps 10 are comprised, jig cambered surface internal diameter is identical with pipe joint external diameter, its matching gap 0.5 ~ 1.5mm, injecting glue groove trough rim cambered surface footpath, jig both sides is identical with pipeline external diameter, its matching gap 0.5 ~ 1.5mm; Be connected by the folder ear of strap bolt between upper lower burrs, its matching gap 0.5 ~ 1.0mm, junction is provided with two bar shaped seal grooves, dish, the sealing of lower wall junction plane can be realized after injecting sealing compound, there are two annular injecting glue grooves 13 jig both sides, can realize the sealing of pipeline 40 and jig after injecting sealing compound.The hole for injecting glue 14 of jig is prolonged Seal cage and is evenly arranged, and has 8 hole for injecting glue 14 formulas in injecting glue groove 13, and the spacing of adjacent hole for injecting glue 14 is 5-8mm.Seal clamp material selection carbon steel, as Q235,10,20,20G steel etc.The wall thickness of clamp 10 is determined according to the rated pressure of pipeline 40, and it is qualified for being not less than 1.5 times of pipeline rated pressures at simulation segment seal pressure test pressure.
In the figure 7:
H1-----jig total thickness L1-----water jacket hem width L4-----pipe joint is long
H2----injecting glue groove deep degree L2-----inside groove hem width L5----jig overall length
H3----pipe joint thickness L3-----injecting glue groove width
Wherein, L5=L4+2 (L1+L2+L3)
L1, L2, L3 are respectively 15 ~ 42mm h2,8 ~ 25mm
(2) trough rim extended pattern
As pipeline and pipe joint are out of shape larger, with conventional type jig do not reach require matching gap time, adopt trough rim extended pattern jig, nominal outer diameter when its concrete size is not out of shape by pipeline makes, and just expands (see Fig. 9) injecting glue groove outer trough edge.
In Fig. 9:
H1----jig total thickness L1-----water jacket hem width L4-----pipe joint is long
H2----injecting glue groove deep L2-----inside groove hem width L5-----jig total length
H3----pipe joint thickness L3-----injecting glue groove width
Wherein, L5=L4+2 (L1+L2+L3) L1=(3 ~ 5) L2
It is 8 ~ 25mm that L2, L3 are 15 ~ 42mm h2
5. the installation of seal clamp
Damaged for pipe joint, there is not the pipeline of deformation, directly conventional type jig is buckled on pipe joint (damaged pipe 41), carries out connection by clamping plate bolt fastening; Damaged for pipe joint, there is the pipeline of deformation, when pipeline out of roundness is greater than 5%, trough rim extended pattern jig need be adopted to return round righting to distortion pipeline, its method is along line cross-section maximum X direction spiral-lock trough rim extended pattern seal clamp (see Fig. 8 and Fig. 9), connection is carried out fastening by clamping plate bolt, in fastener cycle, distortion pipeline and joint are carried out returning circle, reply its circularity, make it concentric with pipeline by the trough rim clamping pipeline widened, thus ensure pipeline and the matching gap between joint and seal clamp.
6. the selecting of injecting sealant
Select uncured type injecting sealant, there is good plasticity and mobility, be applicable to the number of chemical media such as water, water vapor, air, oxygen, various oil product, hydrochloric acid, dilute sulfuric acid, there is good stability, can not dissolve by leaking medium and occur chemical change and loss of seal performance.Serviceability temperature 0 DEG C-100 DEG C, uses pressure <60MPa.
7. injecting glue seal operation method
Be expelled in sealed cavity with hydraulic-pressure pump and high pressure injection gun by injecting sealant, injection order prolongs hole for injecting glue apart from thorn leak source by as far as closely injecting successively, and control of injection pressure is within 41MPa.
8. wrapped up completely by seal clamp with slip-type plastics gum cover, included butter is anticorrosion.
Forced ventilation technique described in the utility model, according to pipeline fed sheet of a media characteristic and leak case, monitoring identifies whether to occur explosive gas atmosphere and toxic and harmful environment, adopt forced ventilation technique (suction type by force), electric equipment all adopts explosion-proof type, can be dissipated dangerous gas environment or controlled within the specific limits, and constructability operator take the corresponding counter measure to enter deathtrap to carry out maintenance operation.
Seal clamp described in the utility model can make according to joint concrete form size quantity body, damaged joint is wrapped among jig completely, for the pipeline (pipeline out of roundness is greater than 5%) that deformation occurs, design and develop trough rim extended pattern jig and round righting is returned to distortion pipeline, distortion pipeline and joint are carried out returning circle, reply its circularity, make distortion pipeline concentric with pipeline, thus ensure pipeline and the matching gap between joint and seal clamp.
A kind of new maintenance process of the utility model research and development, can when pipeline not emptying, do not get angry, the leak point of damaged SRPE is keeped in repair fast, effectively avoids pipeline to stop transport for a long time and keep in repair the production suspension induced losses that causes.The every technical performance of pipeline after reparation is not less than former pipeline designs
Now, the illustrative embodiments according to the application is described with reference to the accompanying drawings in more detail.But these illustrative embodiments can be implemented by multiple different form, and should not be interpreted as being only limited to mode of execution set forth herein.
Should be understood that, there is provided these mode of executions be in order to make the application open thorough and complete, and the design of these illustrative embodiments is fully conveyed to those of ordinary skill in the art, in the accompanying drawings, for the sake of clarity, expand the thickness in layer and region, and use the device that identical reference character represents identical, thus will omit description of them.
Embodiment one:
Be the softening sewage of 60 DEG C of boilers with fed sheet of a media, pipeline rated pressure is 1.6MPa, and the SRPE pipe joint breakage maintenance of nominal diameter DN410mm is example, and obvious distortion does not occur this pipeline.
According to pipeline fed sheet of a media characteristic, the harm that may exist of assessment maintenance operation: strikes of mechanical wounding, object, vehicle injury, brightly to scald, cave in, drowning equivalent risk, formulate special construction process and the counter measure, avoid risk, normative operation flow process.
Step one: working pit
By 1m below excavation to pipeline buried depth, two fore sides wide apart from pipeline 1.5m, each fore side has a passway for escaping can fleeing from ground fast, excavating drainage recovery hole beyond pipeline breakage spot 3m to 5m can by the drainage of leakage liquid medium, paving antiseepage film in hole is reclaimed in drainage, the leakage liquid flow that its capacity is greater than 2 times is taken advantage of and is repaired the pipeline time in expectation or receive oil interval time, sees Fig. 1.
Step 2: plastic composite pipe joint of steel skeleton (damaged pipe 41) surfacing
With instruments such as polishing machines, is polished in irregular position, recover its cylinder type irregular figure, and joint adjacent pipeline section is repaired, make pipeline section cambered surface smooth regular.
Step 3: make seal clamp according to joint form
Its joint form of steel skeleton plastic clad pipe is shown in Fig. 3.
Actual measurement
Pipe joint (damaged pipe 41) diameter h1 is 480mm, and the diameter h2 (i.e. the diameter of total fluid line) of harmless pipe 42 is 432mm,
Joint (damaged pipe 41) thickness h 3 is 24mm.
Make seal clamp (also can be prefabricated in advance) according to joint concrete form size quantity body, adopt conventional type jig, its material selection carbon steel, seal clamp structure is shown in Fig. 7.Concrete size is as follows:
Jig total thickness h1 is 42mm, and water jacket hem width L1 is 25mm, and the long L4 of pipe joint is 335mm,
Injecting glue groove deep degree h2 is 36mm, and inside groove hem width L2 is 25mm,
Pipe joint thickness h 3 is 24mm, and injecting glue groove width L3 is 20mm,
Wherein, L5=L4+2 (L1+L2+L3)=475mm.
Step 4: the installation of seal clamp
Directly conventional type jig is buckled on pipe joint (damaged pipe 41), carries out connection by clamping plate bolt fastening.
Step 5: selecting of injecting sealant
Select uncured type injecting sealant, there is good plasticity and mobility, be applicable to the number of chemical media such as water, water vapor, air, oxygen, various oil product, hydrochloric acid, dilute sulfuric acid, there is good stability, can not dissolve by leaking medium and occur chemical change and loss of seal performance.Serviceability temperature 0 DEG C-100 DEG C, uses pressure <60MPa.
Step 6: injecting glue seal operation method
Be expelled in sealed cavity with hydraulic-pressure pump and high pressure injection gun by injecting sealant, injection order prolongs hole for injecting glue apart from thorn leak source by as far as closely injecting successively, and control of injection pressure is within 41MPa.
Step 7: wrapped up completely by seal clamp with slip-type plastics gum cover, included butter is anticorrosion.
Embodiment two:
Be the softening sewage of 60 DEG C of boilers with fed sheet of a media, pipeline rated pressure is 1.6MPa, and the SRPE pipe joint breakage maintenance of nominal diameter DN410mm is example, and this pipeline has obvious distortion, and pipeline out of roundness is greater than 5%.
According to pipeline fed sheet of a media characteristic, the harm that may exist of assessment maintenance operation: strikes of mechanical wounding, object, vehicle injury, brightly to scald, cave in, drowning equivalent risk, formulate special construction process and the counter measure, avoid risk, normative operation flow process.
Step one: working pit
By 1m below excavation to pipeline buried depth, two fore sides wide apart from pipeline 1.5m, each fore side has a passway for escaping can fleeing from ground fast, excavating drainage recovery hole beyond pipeline breakage spot 3m to 5m can by the drainage of leakage liquid medium, paving antiseepage film in hole is reclaimed in drainage, the leakage liquid flow that its capacity is greater than 2 times is taken advantage of and is repaired the pipeline time in expectation or receive oil interval time, sees Fig. 1.
Step 2: plastic composite pipe joint of steel skeleton (damaged pipe 41) surfacing
With instruments such as polishing machines, is polished in irregular position, recover its cylinder type irregular figure, and joint adjacent pipeline section is repaired, make pipeline section cambered surface smooth regular.
Step 3: make seal clamp according to joint form
Its joint of steel skeleton plastic clad pipe (damaged pipe) form is shown in Fig. 3.
Actual measurement: pipe joint diameter h1 is 480mm, and pipeline diameter h2 is 432mm, h3 joint thickness is 24mm,
Make seal clamp (also can be prefabricated in advance) according to joint concrete form size quantity body, adopt trough rim extended pattern seal clamp, its material selection carbon steel, seal clamp structure is shown in Fig. 9.Concrete size is as follows:
Jig total thickness h1 is 42mm, and outer trough edge L1 is 100mm, and the long L4 of pipe joint is 335mm,
Injecting glue groove deep degree h2 is 36mm, and inside groove hem width L2 is 25mm, and pipe joint thickness h 3 is 24mm,
Injecting glue groove width L3 is 20mm,
Wherein, L5=L4+2 (L1+L2+L3)=625mm.
Step 4: the installation of seal clamp
Along line cross-section maximum X direction spiral-lock trough rim extended pattern seal clamp (see Fig. 4), connection is carried out fastening by clamping plate bolt, in fastener cycle, distortion pipeline and joint are carried out returning circle, reply its circularity, make it concentric with pipeline by the trough rim clamping pipeline widened, thus ensure pipeline and the matching gap between joint and seal clamp.
Step 5: selecting of injecting sealant
Select uncured type injecting sealant, there is good plasticity and mobility, be applicable to the number of chemical media such as water, water vapor, air, oxygen, various oil product, hydrochloric acid, dilute sulfuric acid, there is good stability, can not dissolve by leaking medium and occur chemical change and loss of seal performance.Serviceability temperature 0 DEG C-100 DEG C, uses pressure <60MPa.
Step 6: injecting glue seal operation method
Be expelled in sealed cavity with hydraulic-pressure pump and high pressure injection gun by injecting sealant, injection order prolongs hole for injecting glue apart from thorn leak source by as far as closely injecting successively, and control of injection pressure is within 41MPa.
Step 7: wrapped up completely by seal clamp with slip-type plastics gum cover, included butter is anticorrosion.
Embodiment three:
With fed sheet of a media wet crude, pipeline rated pressure is 1.6MPa, and the SRPE pipe joint breakage maintenance of nominal diameter DN200mm is example, and obvious distortion does not occur this pipeline.
According to the characteristic of wet crude, the harm that may exist of assessment maintenance operation: the strike of mechanical wounding, object, vehicle injury, fire, explode, cave in, drowning etc., formulate special construction process and the counter measure, avoid risk, normative operation flow process, wherein concrete technology divides following components.
Step one: working pit
By 1m below excavation to pipeline buried depth, two fore sides wide apart from pipeline 1.5m, each fore side has a passway for escaping can fleeing from ground fast, excavating drainage recovery hole beyond pipeline breakage spot 3m to 5m can by the drainage of leakage liquid medium, paving antiseepage film in hole is reclaimed in drainage, the leakage liquid flow that its capacity is greater than 2 times is taken advantage of and is repaired the pipeline time in expectation or receive oil interval time, sees Fig. 1.
Step 2: forced ventilation
According to pipeline fed sheet of a media characteristic and leak case, monitoring identifies crude oil leak region and there is explosive gas atmosphere, delimit risk warning region, adopt forced ventilation technique (suction type by force), electric equipment all adopts explosion-proof type, dissipation dangerous gas environment or controlled within the specific limits, constructability operator take the corresponding counter measure to enter deathtrap to carry out maintenance operation.
Step 3: plastic composite pipe joint of steel skeleton (damaged pipe 41) surfacing
Steel skeleton plastic clad pipe leaks because of pipeline thorn or because of other external force, its joint surface is out of shape burr, with instruments such as polishing machines, deformation place is polished, recover its cylinder type irregular figure, and joint adjacent pipeline section is repaired, make pipeline section cambered surface smooth regular.
Step 4: make seal clamp according to joint form
Its joint form of steel skeleton plastic clad pipe is shown in Fig. 3.
Actual measurement:
Pipe joint diameter h1 is 260mm, and pipeline diameter h2 is 224mm,
Joint thickness h3 is 18mm.
Make seal clamp (also can be prefabricated in advance) according to joint concrete form size quantity body, adopt plain edition seal clamp, its material selection carbon steel, seal clamp structure is shown in Fig. 7.
Concrete size is as follows:
Jig total thickness h1 is 35mm, and outer trough edge L1 is 25mm, and the long L4 of pipe joint is 210mm,
Injecting glue groove deep degree h2 is 20mm, and inside groove hem width L2 is 25mm,
Pipe joint thickness h 3 is 18mm, and injecting glue groove width L3 is 20mm,
Wherein, L5=L4+2 (L1+L2+L3)=342mm.
Step 5: the installation of seal clamp
Directly conventional type jig is buckled on pipe joint, carries out connection by clamping plate bolt fastening.
Step 6: selecting of injecting sealant
Select uncured type injecting sealant, there is good plasticity and mobility, be applicable to the number of chemical media such as water, water vapor, air, oxygen, various oil product, hydrochloric acid, dilute sulfuric acid, there is good stability, can not dissolve by leaking medium and occur chemical change and loss of seal performance.Serviceability temperature 0 DEG C-100 DEG C, uses pressure <60MPa.
Step 7: injecting glue seal operation method
Be expelled in sealed cavity with hydraulic-pressure pump and high pressure injection gun by injecting sealant, injection order prolongs hole for injecting glue apart from thorn leak source by as far as closely injecting successively, and control of injection pressure is within 41MPa.
Step 8: wrapped up completely by seal clamp with slip-type plastics gum cover, included butter is anticorrosion.
Embodiment four:
With fed sheet of a media wet crude, pipeline rated pressure is 1.6MPa, and the SRPE pipe joint breakage maintenance of nominal diameter DN200mm is example, and obviously distortion occurs this pipeline, and pipeline out of roundness is greater than 5%.
According to the characteristic of wet crude, the harm that may exist of assessment maintenance operation: the strike of mechanical wounding, object, vehicle injury, fire, cave in, drowning etc., formulate special construction process and the counter measure, avoid risk, normative operation flow process, wherein concrete technology divides following components.
Step one: working pit
By 1m below excavation to pipeline buried depth, two fore sides wide apart from pipeline 1.5m, each fore side has a passway for escaping can fleeing from ground fast, excavating drainage recovery hole beyond pipeline breakage spot 3m to 5m can by the drainage of leakage liquid medium, paving antiseepage film in hole is reclaimed in drainage, its capacity is greater than the leakage liquid flow of 2 times and the product estimating to repair the pipeline time or receive oil interval time, sees Fig. 1.
Step 2: forced ventilation
According to pipeline fed sheet of a media characteristic and leak case, monitoring identifies crude oil leak region and there is explosive gas atmosphere, delimit risk warning region, adopt forced ventilation technique (suction type by force), electric equipment all adopts explosion-proof type, dissipation dangerous gas environment or controlled within the specific limits, constructability operator take the corresponding counter measure to enter deathtrap to carry out maintenance operation.
Step 3: plastic composite pipe joint of steel skeleton surfacing
Steel skeleton plastic clad pipe leaks because of pipeline thorn or because of other external force, its joint surface is out of shape burr, with instruments such as polishing machines, deformation place is polished, recover its cylinder type irregular figure, and joint adjacent pipeline section is repaired, make pipeline section cambered surface smooth regular.
Step 4: make seal clamp according to joint form
Its joint form of steel skeleton plastic clad pipe is shown in Fig. 3.
Actual measurement:
Pipe joint diameter h1 is 260mm, and pipeline diameter h2 is 224mm,
Joint thickness h3 is 18mm.
Make seal clamp (also can be prefabricated in advance) according to joint concrete form size quantity body, adopt trough rim extended pattern seal clamp, its material selection carbon steel, seal clamp structure is shown in Fig. 9.
Concrete size is as follows:
Jig total thickness h1 is 35mm, and outer trough edge L1 is 100mm, and the long L4 of pipe joint is 210mm,
Injecting glue groove deep degree h2 is 20mm, and inside groove hem width L2 is 25mm,
Pipe joint thickness h 3 is 18mm, and injecting glue groove width L3 is 20mm,
Wherein, L5=L4+2 (L1+L2+L3)=420mm.
Step 5: the installation of seal clamp
Along line cross-section maximum X direction spiral-lock trough rim extended pattern seal clamp (see Fig. 4), connection is carried out fastening by clamping plate bolt, in fastener cycle, distortion pipeline and joint are carried out returning circle, reply its circularity, make it concentric with pipeline by the trough rim clamping pipeline widened, thus ensure pipeline and the matching gap between joint and seal clamp.
Step 6: selecting of injecting sealant
Select uncured type injecting sealant, there is good plasticity and mobility, be applicable to the number of chemical media such as water, water vapor, air, oxygen, various oil product, hydrochloric acid, dilute sulfuric acid, there is good stability, can not dissolve by leaking medium and occur chemical change and loss of seal performance.Serviceability temperature 0 DEG C-100 DEG C, uses pressure <60MPa.
Step 7: injecting glue seal operation method
Be expelled in sealed cavity with hydraulic-pressure pump and high pressure injection gun by injecting sealant, injection order is along hole for injecting glue apart from thorn leak source by as far as closely injecting successively, and control of injection pressure is within 41MPa.
Step 8: wrapped up completely by seal clamp with slip-type plastics gum cover, included butter is anticorrosion.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. the seal clamp of a pipe fitting, it is characterized in that, described seal clamp comprises multiple clamp (10) circumferentially spliced successively, and between described multiple clamp (10), form body parcel space, breakage pipe (41) to be repaired is arranged in described body parcel space, and the harmless pipe (42) that (41) two ends are managed with described breakage respectively in the two ends of described clamp (10) is tightly connected; Wherein, the end of described clamp (10) is provided with expansion board (30), and described expansion board (30) extends along the axis of described clamp (10).
2. seal clamp according to claim 1, it is characterized in that, described clamp (10) comprises parcel (11) and is arranged on the positioning convex (12) at described parcel (11) two ends, described parcel (11) is arranged around described breakage pipe (41), described positioning convex (12) is arranged around described harmless pipe (42), and described positioning convex (12) and described harmless pipe (42) are tightly connected.
3. seal clamp according to claim 2, it is characterized in that, the side of the close described harmless pipe (42) of described positioning convex (12) is provided with injecting glue groove (13), and described positioning convex (12) is provided with hole for injecting glue (14), described hole for injecting glue (14) is communicated with described injecting glue groove (13).
4. seal clamp according to claim 2, it is characterized in that, described parcel (11) and described positioning convex (12) are arc, and described positioning convex (12) extends towards the inner side of described clamp (10).
5. seal clamp according to claim 2, is characterized in that, described parcel (11) is provided with hole for injecting glue (14).
6. seal clamp according to claim 1, is characterized in that, described clamp (10) is provided with connecting plate (20), and adjacent described clamp (10) is connected by respective described connecting plate (20).
7. seal clamp according to claim 6, it is characterized in that, described connecting plate (20) is provided with attachment hole (21), adjacent described clamp (10) is connected by the described attachment hole (21) on bolt and described clamp (10).
8. seal clamp according to claim 6, is characterized in that, described connecting plate (20) is arranged on the outside of described clamp (10), and described connecting plate (20) extends along the axis of described clamp (10).
9. seal clamp according to claim 8, it is characterized in that, after two adjacent described clamp (10) splicings, between the described connecting plate (20) of described two clamps (10) and the outer wall of described clamp (10), form injecting glue receiving groove.
10. seal clamp according to claim 2, is characterized in that, described expansion board (30) is arranged on one end away from described body parcel space of described positioning convex (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420642813.6U CN204254140U (en) | 2014-10-30 | 2014-10-30 | The seal clamp of pipe fitting |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420642813.6U CN204254140U (en) | 2014-10-30 | 2014-10-30 | The seal clamp of pipe fitting |
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| CN204254140U true CN204254140U (en) | 2015-04-08 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351677A (en) * | 2015-10-26 | 2016-02-24 | 中国华冶科工集团有限公司 | Method for repairing gas pipeline system in gas delivering process |
| CN105351675A (en) * | 2015-12-14 | 2016-02-24 | 芜湖新兴铸管有限责任公司 | No-steam-stop repair structure of steam pipe |
| CN105605364A (en) * | 2014-10-30 | 2016-05-25 | 中国石油天然气股份有限公司 | Sealing clamp of pipe fitting and method for pipe fitting sealing |
| CN106931255A (en) * | 2015-12-29 | 2017-07-07 | 中国石油天然气股份有限公司 | Pipeline connects head device |
-
2014
- 2014-10-30 CN CN201420642813.6U patent/CN204254140U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105605364A (en) * | 2014-10-30 | 2016-05-25 | 中国石油天然气股份有限公司 | Sealing clamp of pipe fitting and method for pipe fitting sealing |
| CN105351677A (en) * | 2015-10-26 | 2016-02-24 | 中国华冶科工集团有限公司 | Method for repairing gas pipeline system in gas delivering process |
| CN105351675A (en) * | 2015-12-14 | 2016-02-24 | 芜湖新兴铸管有限责任公司 | No-steam-stop repair structure of steam pipe |
| CN106931255A (en) * | 2015-12-29 | 2017-07-07 | 中国石油天然气股份有限公司 | Pipeline connects head device |
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