CN202955412U - Pipeline isolator - Google Patents
Pipeline isolator Download PDFInfo
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- CN202955412U CN202955412U CN 201220624637 CN201220624637U CN202955412U CN 202955412 U CN202955412 U CN 202955412U CN 201220624637 CN201220624637 CN 201220624637 CN 201220624637 U CN201220624637 U CN 201220624637U CN 202955412 U CN202955412 U CN 202955412U
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- extrusion block
- piston
- elastic expansion
- expansion plug
- groove
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Abstract
The utility model discloses a pipeline isolator which is applied to the inside of a pipeline. The pipeline isolator comprises a first elastic expansion plug and a first squeeze block. The outer wall of the first elastic expansion plug and the inner wall of the pipeline are matched with each other, a groove is arranged in one side of the first elastic expansion plug, and the first squeeze block is arranged at the position of the groove. The groove and the first squeeze are both in a circular platform shape. The first squeeze block is used for squeezing the inner wall of the groove. In working, the outer wall of the first squeeze block and the inner wall of the groove are squeezed and attached, and the outer diameter of the attaching portion of the first squeeze block is larger than the inner diameter of the attaching portion of the groove. According to the pipeline isolator, the first elastic expansion plug before being expanded is pushed inside the pipeline easily, the first squeeze block is squeeze inside the groove of the first elastic expansion plug through external force, squeezing to the inner wall of the groove is formed, the first elastic expansion plug is squeezed to expand until the outer wall of the first elastic expansion plug and the inner wall of the pipeline are attached tightly, and therefore effective plugging to the pipeline is achieved. The pipeline isolator is fast in mounting, capable of bearing large pressure, and tight and long-lasting in plugging.
Description
Technical field
The utility model relates to the petroleum gas field, particularly a kind of pipeline isolation device.
Background technique
Development along with the pipeline delivery industry, pipe network has in the world moved twenty or thirty year, the factors such as the wearing and tearing of inevitable burn into and damage from third-party that add can cause gas pipeline leakage, break, pyrophoricity accident, need to be at any time to the natural gas pipe repairing operation of being speedily carried out rescue work, and in the operation of speedily carrying out rescue work, for guaranteeing the safety of environment, need be isolated natural gas pipe, prevent that air etc. from entering pipe interior, the General Requirements pipe interior guarantees certain malleation, good leak tightness is not only wanted in the isolation of pipeline both sides, also wants to bear certain pressure.
Adopt at present usually butter wall plugging method etc. to guarantee the speedily carry out rescue work safety of operating environment of pipeline, the butter wall is generally to admix by a certain percentage with calcium base butter and French chalk the bar blocks mixed, by repairing workman manual operations from level to level tooled joint, build tight, tamping, finally build by laying bricks or stones and form, thereby natural gas pipe is carried out to shutoff.
In realizing process of the present utility model, the inventor finds that at least there is following problem in prior art:
The bar blocks that calcium base butter and French chalk are made is difficult for bonding, causes shutoff not tight, and sealing effect is difficult to guarantee; Butter wall bulk strength is inadequate, and bearing capacity is inadequate, easily caves in or produces gap, causes shutoff to lose efficacy; Butter wall major part all, by repairing workman manual operations, waste time and energy, and the shutoff of butter wall is very limited working lipe, and therefore, the method generally is difficult to meet pipeline welding repairing operation.
The model utility content
In order to solve, the prior art shutoff is tight, bearing capacity not, waste time and energy and shutoff extremely limited problem working lipe, the utility model embodiment provides a kind of pipeline isolation device.Described technological scheme is as follows:
A kind of pipeline isolation device, be applied to pipe interior, described pipeline isolation device comprises: the first elastic expansion plug and the first extrusion block, the outer wall of described the first elastic expansion plug and the inwall of described pipeline match, described the first elastic expansion plug one side is provided with groove, described groove is provided with described the first extrusion block, described groove and described the first extrusion block are frustoconic shape, described the first extrusion block is for pushing described groove inwall, during work, the outer wall of described the first extrusion block and described groove inwall extruding laminating, the external diameter of described the first extrusion block in joint place is greater than the internal diameter of the described groove in joint place.
Further, described pipeline isolation device also comprises: hydraulic cylinder, first piston and the first sealing plate, one end of described hydraulic cylinder and described the first sealing plate sealing are fixing, described the first elastic expansion that described the first sealing plate is fixed on described groove offside beyond the Great Wall, described first piston is arranged on described hydraulic cylinder inside, the first piston bar of described first piston is through described the first sealing plate and described the first elastic expansion plug, and described first piston bar and described the first extrusion block are fixed.
As preferably, in described hydraulic cylinder inside, form the first hydraulic pressure cavity between described first piston and described the first sealing plate, described first piston bar inside is provided with passage, the entrance of described passage is arranged on the end of described first piston bar, and described passage is communicated with described the first hydraulic pressure cavity.
Particularly, as preferably, described pipeline isolation device also comprises: the second piston, the second sealing plate, the second elastic expansion plug, the second extrusion block and connecting tube,
Described the second piston is arranged on described hydraulic cylinder inside, and described the second piston is positioned at the offside of described first piston, described first piston and described the second piston are divided into the first hydraulic pressure cavity by described hydraulic cylinder interval, intermediate cavity and the second hydraulic pressure cavity, described the first hydraulic pressure cavity and described the second hydraulic pressure cavity were communicated with by described connecting tube, described the second sealing plate sealing is fixed on an end of described hydraulic cylinder, and described the second sealing plate be positioned at described the first sealing plate offside, described the second sealing plate is fixed on a side of described the second elastic expansion plug, the opposite side of described the second elastic expansion plug has groove, described groove is provided with described the second extrusion block, the second piston rod of described the second piston is through described the second sealing plate and described the second elastic expansion plug, and described the second piston rod and described the second extrusion block are fixed, described the second piston rod inside is provided with duct, described duct is communicated with described intermediate cavity, the outlet in described duct is positioned at the end of described the second piston rod.
As preferably, described pipeline isolation device also comprises locking nut, be provided with described locking nut on the described first piston bar in the described first extrusion block outside and on described second piston rod in the described second extrusion block outside, described locking nut is for carrying out screens to described the first extrusion block and described the second extrusion block.
Described pipeline isolation device also comprises outer plate, clamping bolt and interior lining panel, between the described first extrusion block outside and described locking nut, be provided with described outer plate between the described second extrusion block outside and described locking nut, between described the first extrusion block and described the first elastic expansion plug, be provided with described interior lining panel between described the second extrusion block and described the second elastic expansion plug, be provided with described clamping bolt on described the first extrusion block and described the second extrusion block, clamping bolt on described the first extrusion block is through the interior lining panel at described the first extrusion block place, the outer plate at described the first extrusion block and described the first extrusion block place carries out fastening, clamping bolt on described the second extrusion block is through the interior lining panel at described the second extrusion block place, the outer plate at described the second extrusion block and described the second extrusion block place carries out fastening.
Further, described pipeline isolation device also comprises seal ring, between described the first sealing plate and described first piston bar, between described first piston and described hydraulic cylinder, between described the second sealing plate and described the second piston rod, between described the second piston and described hydraulic cylinder, be provided with described seal ring.
The beneficial effect that the technological scheme that the utility model embodiment provides is brought is:
The utility model embodiment easily pushes pipe interior by the first elastic expansion plug before expanding, by external force, the first extrusion block is clamp-oned in the groove of the first elastic expansion plug, the outer wall of the first extrusion block forms extruding to the groove inwall, thereby make the expansion that is squeezed of the first elastic expansion plug, it is large that thereby external diameter becomes, until the inwall of the outer wall of the first elastic expansion plug and pipeline is close to, thereby pipeline is reached to effective shutoff, the utility model is simple in structure, install fast, can bear larger pressure, and the first elastic expansion plug can be good at coordinating and being close to inner-walls of duct, shutoff is tight, shutoff is long working lipe, extremely easy to use during pipeline welding repairing operation.
The accompanying drawing explanation
In order to be illustrated more clearly in the technological scheme in the utility model embodiment, in below describing embodiment, the accompanying drawing of required use is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the described pipeline isolation device that provides of the utility model embodiment;
Fig. 2 is the structural representation of the described pipeline isolation device that provides of the another embodiment of the utility model;
Fig. 3 is the structural representation of the described pipeline isolation device that provides of the another embodiment of the utility model.
Wherein: 1 pipeline,
21 first elastic expansion plugs, 211 grooves, 22 second elastic expansion plugs,
31 first extrusion blocks, 32 second extrusion blocks,
4 hydraulic cylinders,
41 first pistons, 411 first piston bars, 412 passages, 413 entrances,
42 second pistons, 421 second piston rods, 422 ducts, 423 outlets,
51 first sealing plates, 52 second sealing plates,
61 first hydraulic pressure cavity, 62 intermediate cavity, 63 second hydraulic pressure cavity, 64 connecting tube,
71 outer plates, 72 interior lining panels, 73 clamping bolts,
8 locking nuts,
9 seal rings,
The external diameter of D joint place the first extrusion block, the internal diameter of H joint place groove.
Embodiment
For making the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with accompanying drawing, the utility model mode of execution is described in further detail.
As shown in Figure 1, a kind of pipeline isolation device that the utility model embodiment provides, be applied to pipeline 1 inside, described pipeline isolation device comprises: the first elastic expansion plug 21 and the first extrusion block 31, the inwall of the outer wall of described the first elastic expansion plug 21 and described pipeline 1 matches, described the first elastic expansion plug 21 1 sides are provided with groove 211, described groove 211 places are provided with described the first extrusion block 31, described groove 211 and described the first extrusion block 31 are frustoconic shape, described the first extrusion block 31 is for pushing described groove 211 inwalls, during work, the outer wall of described the first extrusion block 31 and the 211 inwall extruding laminatings of described groove, the D outer diameter of described the first extrusion block 31 in joint place is greater than the internal diameter H of the described groove 211 in joint place.
Wherein, the first elastic expansion plug 21 and the first extrusion block 31 all can adopt polyurethane material, utilize the difference of polyurethane formulations, can make the first elastic expansion plug 21 there is elasticity preferably, can expand to a certain extent and shrink, the first extrusion block 31 is harder, the first elastic expansion plug 21 is typically provided to round pie, the inwall of its outer wall and pipeline 1 matches, before expansion, the external diameter of the first elastic expansion plug 21 is slightly less than pipeline 1 internal diameter, be traditionally arranged to be and be slightly less than pipeline 1 internal diameter 1-2mm, so, the utility model easily can be pushed to pipeline 1 during use, then installed and used, groove 211 and the first extrusion block 31 all are set to frustoconic shape, because the sidewall of round platform has certain inclination angle, during practical application, the inclination angle of the groove 211 of general frustoconic shape and the sidewall of the first extrusion block 31 is set to onesize, so facilitate the first extrusion block 31 to clamp-on smoothly in groove 211, and the D outer diameter of joint place the first extrusion block 31 is greater than the internal diameter H of joint place groove 211, the first extrusion block 31 can form extruding to groove 211 and make its expansion, thereby being expanded, the first elastic expansion plug 21 becomes large, the outer wall of the first elastic expansion plug 21 and the inwall of pipeline 1 are close to, pipeline 1 is carried out to shutoff.
The utility model embodiment easily pushes pipeline 1 inside by the first elastic expansion plug 21 before expanding, by external force, the first extrusion block 31 is clamp-oned in the groove 211 of the first elastic expansion plug 21, wherein, external force can have multiple implementation, such as: spring force, the modes such as atmospheric pressure, the outer wall of the first extrusion block 31 forms extruding to groove 211 inwalls, make the expansion that is squeezed of the first elastic expansion plug 21, thereby make the first elastic expansion plug 21 external diameters become large, until the inwall of the outer wall of the first elastic expansion plug 21 and pipeline 1 fits tightly, thereby pipeline 1 is reached to effective shutoff, the utility model is simple in structure, install fast, can bear larger pressure, and the first elastic expansion plug 21 can be good at coordinating and being close to pipeline 1 inwall, shutoff is tight, shutoff is long working lipe, extremely easy to use during pipeline 1 welding repairing operation.
As shown in Figure 2, further, described pipeline isolation device also comprises: hydraulic cylinder 4, first piston 41 and the first sealing plate 51, one end of described hydraulic cylinder 4 and described the first sealing plate 51 sealings are fixing, described the first sealing plate 51 is fixed on the described first elastic expansion plug 21 of described groove 211 offsides, described first piston 41 is arranged on described hydraulic cylinder 4 inside, the first piston bar 411 of described first piston 41 is through described the first sealing plate 51 and described the first elastic expansion plug 21, and described first piston bar 411 is fixing with described the first extrusion block 31.During practical application, by external force, make first piston 41 carry out compression movement in hydraulic cylinder 4, thereby drive the groove 211 interior motion of the first extrusion block 31 to the first elastic expansion plug 21, complete extrusion expansion, after having worked, by external force, make first piston 41 in the interior reversing motion of hydraulic cylinder 4, thereby drive the groove 211 that the first extrusion block 31 breaks away from the first elastic expansion plug 21, the first elastic expansion plug 21 shrinks, and can complete dismounting.
As shown in Figure 2, as preferably, in described hydraulic cylinder 4 inside, form the first hydraulic pressure cavity 61 between described first piston 41 and described the first sealing plate 51, described first piston bar 411 inside are provided with passage 412, the entrance 413 of described passage 412 is arranged on the end of described first piston bar 411, and described passage 412 is communicated with described the first hydraulic pressure cavity 61.During practical application, a pipe joint can be set at entrance 413 places, pipe joint is connected with stamper, thereby be filled with liquid and suppressed in passage 412, liquid is pressed into the first hydraulic pressure cavity 61, and promotion first piston 41 carries out compression movement in hydraulic cylinder 4, thereby drive the groove 211 interior motion of the first extrusion block 31 to the first elastic expansion plug 21, complete extrusion expansion, after having worked, by external force, make first piston 41 in the interior reversing motion of hydraulic cylinder 4, thereby drive the groove 211 that the first extrusion block 31 breaks away from the first elastic expansion plug 21, the first elastic expansion plug 21 shunk and return to expand before state, the liquid that is pressed into the first hydraulic pressure cavity 61 returns to outflow from passage 412, can complete dismounting.
As shown in Figure 3, particularly, as preferably, the described pipeline isolation device that the utility model embodiment provides also comprises: the second piston 42, the second sealing plate 52, the second elastic expansion plug 22, the second extrusion block 32 and connecting tube 64,
Described the second piston 42 is arranged on described hydraulic cylinder 4 inside, and described the second piston 42 is positioned at the offside of described first piston 41, described first piston 41 and described the second piston 42 are divided into the first hydraulic pressure cavity 61 by described hydraulic cylinder 4 intervals, intermediate cavity 62 and the second hydraulic pressure cavity 63, described the first hydraulic pressure cavity 61 and described the second hydraulic pressure cavity 63 were communicated with by described connecting tube 64, described the second sealing plate 52 sealings are fixed on an end of described hydraulic cylinder 4, and described the second sealing plate 52 is positioned at the offside of described the first sealing plate 51, described the second sealing plate 52 is fixed on a side of described the second elastic expansion plug 22, the opposite side of described the second elastic expansion plug 22 has groove 211, described groove 211 places are provided with described the second extrusion block 32, the second piston rod 421 of described the second piston 42 is through described the second sealing plate 52 and described the second elastic expansion plug 22, and described the second piston rod 421 and described the second extrusion block 32 are fixing, described the second piston rod 421 inside are provided with duct 422, described duct 422 is communicated with described intermediate cavity 62, the outlet 423 in described duct 422 is positioned at the end of described the second piston rod 421.
Wherein, for convenience of two-way use, in the utility model embodiment, the first sealing plate 51 and the second sealing plate 52 seal respectively the two ends that are fixed on hydraulic cylinder 4, be symmetrical arranged two cover elastic expansion plug structures at the two ends of hydraulic cylinder 4, be set to dual-piston structure in hydraulic cylinder 4, during actual the use, a pipe joint can be set at entrance 413 places, pipe joint is connected with stamper, thereby suppressed to being filled with liquid in passage 412, liquid is pressed into the first hydraulic pressure cavity 61 along passage 412, and the first hydraulic pressure cavity 61 and the second hydraulic pressure cavity 63 were communicated with by connecting tube 64, liquid can be from entering the second hydraulic pressure cavity 63 connecting tube 64, so, when pressure reaches about 2Mpa, liquid is under the effect of stamper, promote respectively first piston 41 and the second piston 42 and carry out compression movement in the middle of hydraulic cylinder 4, thereby drive the interior motion of groove 211 to elastic expansion plug separately of the first extrusion block 31 and the second extrusion block 32, complete extrusion expansion, making the outer wall of the first elastic expansion plug 21 and pipeline 1(referring to Fig. 1) inwall is close to, now, the gas of intermediate cavity 62 inside is under the pressure-acting of two pistons, discharge in duct 422 in the second piston rod 421, after having worked, the stamper that will be connected with first piston bar 411 internal channels 412 unloads, outlet 423 places in the duct 422 in the second piston rod 421 also connect a pipe joint, this pipe joint is connected with stamper, thereby be filled with liquid and suppressed in this duct 422, liquid is pressed into intermediate cavity 62 along duct 422, and promote respectively first piston 41 and the second piston 42 carries out compression movement to hydraulic cylinder 4 two ends, thereby drive the interior disengaging of groove 211 from elastic expansion plug separately of the first extrusion block 31 and the second extrusion block 32, the first elastic expansion plug 21 and the second elastic expansion plug 22 are dwindled and return to the front state that expands, the liquid that before is pressed into the first hydraulic pressure cavity 61 and the second hydraulic pressure cavity 63 returns to outflow from passage 412, thereby complete dismounting.
As shown in Figure 3, as preferably, described pipeline isolation device also comprises locking nut 8, be provided with described locking nut 8 on described second piston rod 421 on the described first piston bar 411 in described first extrusion block 31 outsides and described second extrusion block 32 outsides, described locking nut 8 is for carrying out screens to described the first extrusion block 31 and described the second extrusion block 32.
As shown in Figure 3, as preferably, described pipeline isolation device also comprises outer plate 71, clamping bolt 73 and interior lining panel 72, between described first extrusion block 31 outsides and described locking nut 8, be provided with described outer plate 71 between described second extrusion block 32 outsides and described locking nut 8, between described the first extrusion block 31 and described the first elastic expansion plug 21, be provided with described interior lining panel 72 between described the second extrusion block 32 and described the second elastic expansion plug 22, be provided with described clamping bolt 73 on described the first extrusion block 31 and described the second extrusion block 32, clamping bolt 73 on described the first extrusion block 31 is through the interior lining panel 72 at described the first extrusion block 31 places, the outer plate 71 at described the first extrusion block 31 and described the first extrusion block 31 places carries out fastening, clamping bolt 73 on described the second extrusion block 32 is through the interior lining panel 72 at described the second extrusion block 32 places, the outer plate 71 at described the second extrusion block 32 and described the second extrusion block 32 places carries out fastening.
Wherein, in the present embodiment, left side at hydraulic cylinder 4, be provided with outer plate 71 between first extrusion block 31 outsides and locking nut 8, outer plate 71 is sleeved on first piston bar 411, be provided with interior lining panel 72 between the first extrusion block 31 and the first elastic expansion plug 21, clamping bolt 73 is through interior lining panel 72, the first extrusion block 31 and outer plate 71 carry out fastening, locking nut 8 is tightened on first piston bar 411, during work, first piston bar 411 drives locking nut 8 motions, 8 pairs of outer plate 71 application of forces of locking nut, 71 pairs of first extrusion block 31 application of forces of outer plate, so, locking nut 8 not only plays the effect of screens, but also and common auxiliary pushing the first extrusion block 31 of outer plate 71 to the interior motion of groove 211, interior lining panel 72 is for being fixed with outer plate 71, in addition, the first extrusion block 31 both sides arrange respectively outer plate 71 and interior lining panel 72, and, by clamping bolt 73 lockings, so, can also play to the first extrusion block 31 effect of reinforcing.As a same reason, the utility model embodiment also arranges interior lining panel 72 in the first elastic expansion plug 21 groove 211 sides, for being fixed with the first sealing plate 51, can also play to the first elastic expansion plug 21 effect of reinforcing simultaneously;
In the structure on the right side of hydraulic cylinder 4 and the symmetrical configuration in left side, be provided with outer plate 71 between second extrusion block 32 outsides and locking nut 8, outer plate 71 is sleeved on the second piston rod 421, be provided with interior lining panel 72 between the second extrusion block 32 and the second elastic expansion plug 22, clamping bolt 73 is through interior lining panel 72, the second extrusion block 32 and outer plate 71 carry out fastening, locking nut 8 is tightened on the second piston rod 421, during work, the second piston rod 421 drives locking nut 8 motions, 8 pairs of outer plate 71 application of forces of locking nut, 71 pairs of second extrusion block 32 application of forces of outer plate, so, locking nut 8 not only plays the effect of screens, but also and common auxiliary pushing the second extrusion block 32 of outer plate 71 to the interior motion of groove 211, interior lining panel 72 is for being fixed with outer plate 71, in addition, the second extrusion block 32 both sides arrange respectively outer plate 71 and interior lining panel 72, and, by clamping bolt 73 lockings, so, can also play to the second extrusion block 32 effect of reinforcing.As a same reason, the utility model embodiment also arranges interior lining panel 72 in the second elastic expansion plug 22 groove 211 sides, for being fixed with the second sealing plate 52, can also play to the second elastic expansion plug 22 effect of reinforcing simultaneously.
As shown in Figure 3, further, described pipeline isolation device also comprises seal ring 9, between described the first sealing plate 51 and described first piston bar 411, between described first piston 41 and described hydraulic cylinder 4, between described the second sealing plate 52 and described the second piston rod 421, between described the second piston 42 and described hydraulic cylinder 4, be provided with described seal ring 9.The setting of seal ring 9 makes between each component to coordinate closely, and the phenomenon of the leakage that prevents from leaking gas occurs.
In addition, the utility model embodiment overall weight is light, install light, be adopted as a plurality of component in conjunction with composition, do not need too much manpower and the complicated facility of installing, adopt the elastic expansion plug of polyurethane to be changed with the shape difference of pipeline 1 inwall, especially when pipeline 1 inner wall coarse, the isolation sealing effect is with the obvious advantage, isolate quick for installation, within general 30 minutes, can install, isolation maximum pressure grade is 0.5 MPa, is specially adapted to the pipeline 1 rock gas isolation in the otch weld job of speedily carrying out rescue work, and is useful in pipeline 1 industry breakdown gang as configurations.
Above-mentioned the utility model embodiment sequence number, just to describing, does not represent embodiment's quality.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (7)
1. a pipeline isolation device, be applied to pipe interior, it is characterized in that, described pipeline isolation device comprises: the first elastic expansion plug and the first extrusion block, the outer wall of described the first elastic expansion plug and the inwall of described pipeline match, described the first elastic expansion plug one side is provided with groove, described groove is provided with described the first extrusion block, described groove and described the first extrusion block are frustoconic shape, described the first extrusion block is for pushing described groove inwall, during work, the outer wall of described the first extrusion block and described groove inwall extruding laminating, the external diameter of described the first extrusion block in joint place is greater than the internal diameter of the described groove in joint place.
2. pipeline isolation device according to claim 1, it is characterized in that, described pipeline isolation device also comprises: hydraulic cylinder, first piston and the first sealing plate, one end of described hydraulic cylinder and described the first sealing plate sealing are fixing, described the first elastic expansion that described the first sealing plate is fixed on described groove offside beyond the Great Wall, described first piston is arranged on described hydraulic cylinder inside, the first piston bar of described first piston is through described the first sealing plate and described the first elastic expansion plug, and described first piston bar and described the first extrusion block are fixed.
3. pipeline isolation device according to claim 2, it is characterized in that, in described hydraulic cylinder inside, form the first hydraulic pressure cavity between described first piston and described the first sealing plate, described first piston bar inside is provided with passage, the entrance of described passage is arranged on the end of described first piston bar, and described passage is communicated with described the first hydraulic pressure cavity.
4. pipeline isolation device according to claim 2, is characterized in that, described pipeline isolation device also comprises: the second piston, the second sealing plate, the second elastic expansion plug, the second extrusion block and connecting tube,
Described the second piston is arranged on described hydraulic cylinder inside, and described the second piston is positioned at the offside of described first piston, described first piston and described the second piston are divided into the first hydraulic pressure cavity by described hydraulic cylinder interval, intermediate cavity and the second hydraulic pressure cavity, described the first hydraulic pressure cavity and described the second hydraulic pressure cavity were communicated with by described connecting tube, described the second sealing plate sealing is fixed on an end of described hydraulic cylinder, and described the second sealing plate be positioned at described the first sealing plate offside, described the second sealing plate is fixed on a side of described the second elastic expansion plug, the opposite side of described the second elastic expansion plug has groove, described groove is provided with described the second extrusion block, the second piston rod of described the second piston is through described the second sealing plate and described the second elastic expansion plug, and described the second piston rod and described the second extrusion block are fixed, described the second piston rod inside is provided with duct, described duct is communicated with described intermediate cavity, the outlet in described duct is positioned at the end of described the second piston rod.
5. pipeline isolation device according to claim 4, it is characterized in that, described pipeline isolation device also comprises locking nut, be provided with described locking nut on the described first piston bar in the described first extrusion block outside and on described second piston rod in the described second extrusion block outside, described locking nut is for carrying out screens to described the first extrusion block and described the second extrusion block.
6. pipeline isolation device according to claim 4, it is characterized in that, described pipeline isolation device also comprises outer plate, clamping bolt and interior lining panel, between the described first extrusion block outside and described locking nut, be provided with described outer plate between the described second extrusion block outside and described locking nut, between described the first extrusion block and described the first elastic expansion plug, be provided with described interior lining panel between described the second extrusion block and described the second elastic expansion plug, be provided with described clamping bolt on described the first extrusion block and described the second extrusion block, clamping bolt on described the first extrusion block is through the interior lining panel at described the first extrusion block place, the outer plate at described the first extrusion block and described the first extrusion block place carries out fastening, clamping bolt on described the second extrusion block is through the interior lining panel at described the second extrusion block place, the outer plate at described the second extrusion block and described the second extrusion block place carries out fastening.
7. according to the described pipeline isolation device of claim 4-6 any one claim, it is characterized in that, described pipeline isolation device also comprises seal ring, between described the first sealing plate and described first piston bar, between described first piston and described hydraulic cylinder, between described the second sealing plate and described the second piston rod, between described the second piston and described hydraulic cylinder, be provided with described seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220624637 CN202955412U (en) | 2012-11-22 | 2012-11-22 | Pipeline isolator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220624637 CN202955412U (en) | 2012-11-22 | 2012-11-22 | Pipeline isolator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202955412U true CN202955412U (en) | 2013-05-29 |
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ID=48460984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220624637 Expired - Lifetime CN202955412U (en) | 2012-11-22 | 2012-11-22 | Pipeline isolator |
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| Country | Link |
|---|---|
| CN (1) | CN202955412U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836298A (en) * | 2012-11-22 | 2014-06-04 | 中国石油天然气股份有限公司 | Pipeline isolator |
-
2012
- 2012-11-22 CN CN 201220624637 patent/CN202955412U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836298A (en) * | 2012-11-22 | 2014-06-04 | 中国石油天然气股份有限公司 | Pipeline isolator |
| CN103836298B (en) * | 2012-11-22 | 2016-05-11 | 中国石油天然气股份有限公司 | A kind of pipeline isolation device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130529 Effective date of abandoning: 20160511 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |