CN116734080B - Internal expansion type sealing plug - Google Patents
Internal expansion type sealing plug Download PDFInfo
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- CN116734080B CN116734080B CN202311010547.5A CN202311010547A CN116734080B CN 116734080 B CN116734080 B CN 116734080B CN 202311010547 A CN202311010547 A CN 202311010547A CN 116734080 B CN116734080 B CN 116734080B
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- sealing
- taper sleeve
- pressure head
- ring
- tensioning
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- 238000007789 sealing Methods 0.000 title claims abstract description 182
- 230000005540 biological transmission Effects 0.000 claims description 69
- 238000001125 extrusion Methods 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000004308 accommodation Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/10—Means for stopping flow from or in pipes or hoses
- F16L55/12—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ
- F16L55/128—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose
- F16L55/132—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose the closure device being a plug fixed by radially deforming the packing
- F16L55/134—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose the closure device being a plug fixed by radially deforming the packing by means of an inflatable packing
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
Abstract
The invention discloses an internal expansion type sealing plug which comprises a first cover plate and a second cover plate, wherein a sealing pressure head is arranged on the first cover plate, a power assembly is arranged on the second cover plate and connected with the sealing pressure head, a sealing ring and a tensioning assembly are arranged between the power assembly and the sealing pressure head, and the power assembly extrudes the sealing ring and the tensioning assembly along a first direction through the sealing pressure head so as to enable the sealing ring to seal a part to be sealed, and the tensioning assembly is used for tensioning and fixing the part to be sealed. According to the internal expansion type sealing plug provided by the invention, the sealing ring and the tensioning assembly are extruded by the power assembly along the first direction through the sealing pressure head, so that the sealing ring seals the part to be sealed, the sealing of a pipeline is realized, the tensioning assembly is used for tensioning and fixing the part to be sealed, the self-locking function can be realized, the sealing of the part to be sealed is more reliable, the disassembly and the assembly are convenient, the repeated use can be realized, the manpower and material resources are saved, and the cost is reduced.
Description
Technical Field
The invention belongs to the technical field of sealing plugs, and particularly relates to an internal expansion type sealing plug.
Background
Sealing test is often needed for water supply and heat supply unit equipment and pipeline conveying systems, flange-connected pipelines are often plugged by flange blind plates, pipe sections without connecting flanges are plugged by welding pipe caps, and after the pressurizing test is finished, the pipe caps are removed, so that the plugging is not tight, and a large amount of manpower and material resources are consumed.
Therefore, there is a need to design an internal expansion type sealing plug to solve the above-mentioned problems that the sealing is not tight when the pipeline is sealed and a large amount of manpower and material resources are required to be consumed.
Disclosure of Invention
In order to solve the technical problems that the plugging is not tight and a large amount of manpower and material resources are required to be consumed when the pipeline is plugged in the background art, the internal expansion type sealing plug is provided to solve the problems.
In order to achieve the above purpose, the specific technical scheme of the internal expansion type sealing plug is as follows:
the utility model provides an internal expanding type sealing plug, includes first apron and second apron, is provided with the sealing pressure head on the first apron, is provided with power component on the second apron, and power component is connected with the sealing pressure head, is provided with the sealing washer between power component and the sealing pressure head and rises tight subassembly, and power component extrudees the sealing washer along first direction and rises tight subassembly through the sealing pressure head to make the sealing washer treat that the sealing washer seals, rise tight subassembly and treat that the sealing washer rises and fasten.
Further, the power component is rotatably arranged on the second cover plate and is in threaded connection with the sealing pressure head, and the power component rotates to enable the sealing pressure head to move along the first direction.
Further, the power assembly comprises a first transmission part and a second transmission part, the first transmission part is arranged on the second cover plate, the first transmission part is in transmission fit with the second transmission part, the second transmission part is in threaded connection with the sealing press head, and the first transmission part drives the second transmission part to transmit so that the sealing press head moves along the first direction.
Further, the first transmission piece is a first gear, the second transmission piece is a transmission rod, one end of the transmission rod is provided with a second gear, and the first gear and the second gear are meshed for transmission, so that the transmission rod drives the sealing pressure head to move along the first direction.
Further, a first through hole is formed in the sealing pressure head, an internal thread is arranged in the first through hole, an external thread is arranged on the transmission rod, and the internal thread is in threaded connection with the external thread.
Further, the tensioning assembly comprises a tensioning ring, a first taper sleeve and a second taper sleeve, the tensioning ring is arranged between the first taper sleeve and the second taper sleeve, the first taper sleeve is arranged at one end, far away from the sealing pressure head, of the sealing ring, and the second taper sleeve is arranged on the second cover plate.
Further, the two ends of the tensioning ring are respectively provided with a first inclined plane and a second inclined plane, the first inclined plane is matched with the first taper sleeve, the second inclined plane is matched with the second taper sleeve, and the first taper sleeve and the second taper sleeve respectively extrude the tensioning ring along the first inclined plane and the second inclined plane so that the tensioning ring can be used for tensioning and fixing a piece to be sealed.
Further, a second through hole is formed in the first taper sleeve, a third through hole is formed in the second taper sleeve, and the transmission rod sequentially penetrates through the second through hole and the third through hole to be in threaded connection with the sealing press head.
Further, still include the locating part, the locating part sets up the one end of keeping away from the second gear at the transfer line, and the locating part is used for spacing the transfer line on sealed pressure head.
Further, a first abutting portion is arranged on the sealing pressure head, a second abutting portion is arranged on the first taper sleeve, and the first abutting portion abuts against the second abutting portion, so that the sealing ring seals the sealing piece to be sealed.
The internal expansion type sealing plug has the following advantages:
through being provided with the sealing pressure head on first apron, be provided with power component on the second apron, power component is connected with sealing pressure head, be provided with the sealing washer between power component and the sealing pressure head and rise tight subassembly, power component extrudees the sealing washer along first direction and rises tight subassembly through sealing pressure head, so that the sealing washer is sealed to treat the sealing member, realize treating the shutoff of sealing member, rise tight subassembly and treat the sealing member and rise the fastening and decide, can realize self-locking function, make the shutoff of treating the sealing member more reliable, easy dismounting, can reuse, manpower and materials have been saved, the reduce cost.
Drawings
FIG. 1 is a schematic view of the structure of an internal expansion type sealing plug of the present invention;
FIG. 2 is a schematic cross-sectional view of an internal expansion seal plug according to the present invention;
FIG. 3 is a right side view of the internal expansion seal plug of the present invention;
FIG. 4 is a schematic view of a first gear according to the present invention;
FIG. 5 is a schematic view of the structure of the sealing ram of the present invention;
FIG. 6 is a schematic view of the tension ring of the present invention;
FIG. 7 is a schematic view of the first cone sleeve according to the present invention;
FIG. 8 is a schematic view of a second cone sleeve according to the present invention;
fig. 9 is a schematic structural view of a second taper sleeve according to the present invention.
The figure indicates:
1. a first cover plate; 2. a second cover plate; 3. sealing the pressure head; 31. a first through hole; 32. a connection part; 33. a first abutting portion; 4. a power assembly; 41. a first gear; 411. hexagonal holes; 42. a transmission rod; 421. a second gear; 5. a seal ring; 6. a tensioning assembly; 61. a tension ring; 611. a first inclined surface; 612. a second inclined surface; 62. a first taper sleeve; 621. a second abutting portion; 6211. a first conical surface; 622. a third abutting portion; 623. a second through hole; 63. a second taper sleeve; 631. a fourth abutting portion; 632. a fifth abutting portion; 6321. a second conical surface; 633. a third through hole; 7. a limiting piece; 8. and (3) sealing rings.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art. In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Those skilled in the art will appreciate that while some embodiments herein include some features but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.
The internal expansion seal plug of the present invention is described below with reference to fig. 1 to 9.
As shown in fig. 1 and 2, the internal expansion type sealing plug comprises a first cover plate 1 and a second cover plate 2, wherein a sealing pressure head 3 is arranged on the first cover plate 1, a power component 4 is arranged on the second cover plate 2, the power component 4 is connected with the sealing pressure head 3, a sealing ring 5 and a tensioning component 6 are arranged between the power component 4 and the sealing pressure head 3, the power component 4 extrudes the sealing ring 5 and the tensioning component 6 along a first direction through the sealing pressure head 3 so that the sealing ring 5 seals a piece to be sealed, and the tensioning component 6 performs tensioning fixation on the piece to be sealed. Through being provided with sealing pressure head 3 on first apron 1, be provided with power pack 4 on the second apron 2, power pack 4 is connected with sealing pressure head 3, be provided with sealing washer 5 and tight subassembly that rises between power pack 4 and the sealing pressure head 3, power pack 4 extrudees sealing washer 5 and tight subassembly 6 that rises through sealing pressure head 3 along first direction to make sealing washer 5 treat the sealing member and seal, realize treating the shutoff of sealing member, tight subassembly 6 that rises treat the sealing member and rise the fastening and decide, can realize the auto-lock function, make the shutoff to the pipeline more reliable, easy dismounting, can reuse, manpower and materials have been saved, and reduce cost. The element to be sealed in this embodiment is a pipe. The first direction is the axial direction of the sealing ram.
Further, as shown in fig. 1 and 2, a power assembly 4 is rotatably provided on the second cover plate 2, the power assembly 4 is screwed with the sealing ram 3, and the power assembly 4 is rotated to move the sealing ram 3 in the first direction. Specifically, the power assembly 4 comprises a first transmission member and a second transmission member, the first transmission member is arranged on the second cover plate 2, the first transmission member is in transmission fit with the second transmission member, the second transmission member is in threaded connection with the sealing pressure head 3, and the first transmission member drives the second transmission member to transmit so that the sealing pressure head 3 moves along the first direction. In this embodiment, the first transmission member is a first gear 41, the second transmission member is a transmission rod 42, and a second gear 421 is disposed at one end of the transmission rod 42, and the first gear 41 and the second gear 421 are engaged to drive the transmission rod 42 to drive the sealing ram 3 to move along the first direction. When the pipeline is sealed, the first gear 41 rotates, and then drives the second gear 421 to rotate, the second gear 421 rotates and can drive the sealing pressure head 3 in threaded connection with the second gear 421 to move along the first direction, the sealing pressure head 3 moves along the first direction, the sealing ring 5 and the tensioning assembly 6 between the sealing pressure head 3 and the second cover plate 2 can be pressed by stress, so that the sealing pressure head 3 deforms into a drum shape, the pipeline is plugged, and meanwhile, the tensioning assembly 6 also deforms and bulges, so that the pipeline is locked, and the sealing ring 5 is guaranteed to plug the pipeline. In this embodiment, in order to facilitate the control of the rotation of the first transmission member, one end of the first gear 41 is provided with a hexagonal hole 411, into which a wrench can be inserted, through which the first gear 41 is rotated.
Further, as shown in fig. 2 and fig. 5, in order to realize the linear motion of the sealing ram 3 along the first direction when performing the rotation motion, further squeeze the sealing ram 3 and the tensioning assembly 6, in this embodiment, the sealing ram 3 is provided with a first through hole 31, an internal thread is provided in the first through hole 31, a transmission rod 42 is provided with an external thread, the internal thread is in threaded connection with the external thread, the first gear 41 rotates, and then drives the second gear 421 to rotate, and the second gear 421 rotates to drive the sealing ram 3 screwed with the second gear 421 to move along the first direction, so as to realize the sealing and plugging of the pipeline.
Further, as shown in fig. 2 to 9, the tensioning assembly 6 includes a tensioning ring 61, a first taper sleeve 62 and a second taper sleeve 63, the tensioning ring 61 is disposed between the first taper sleeve 62 and the second taper sleeve 63, the first taper sleeve 62 is disposed at an end of the seal ring 5 away from the seal ram 3, and the second taper sleeve 63 is disposed on the second cover plate 2. In the process that the transmission rod 42 drives the sealing pressure head 3 to move along the first direction, the first taper sleeve 62 and the second taper sleeve 63 tightly expand the expansion ring 61, so that the pipeline is further locked, and the inner expansion type sealing plug is prevented from being separated from the pipeline.
Further, as shown in fig. 5, the sealing ram 3 includes a connecting portion 32 and a first abutting portion 33, the connecting portion 32 and the first abutting portion 33 are in a step shape, the connecting portion 32 is connected with the first cover plate 1, a through hole is formed in the first cover plate 1, a connecting groove is formed in the connecting portion 32, a connecting piece penetrates through the through hole and is screwed into the connecting groove, the first cover plate 1 and the sealing ram 3 are connected and fixed, in this embodiment, the connecting piece is in a bolt connection, in other embodiments, the first cover plate 1 and the sealing ram 3 can be connected through a clamping connection or other modes, so long as the sealing ram 3 and the first cover plate 1 can be connected and fixed.
Further, as shown in fig. 2 and 7, the first taper sleeve 62 includes a second abutting portion 621 and a third abutting portion 622, the second abutting portion 621 and the third abutting portion 622 are stepped therebetween, in this embodiment, the third abutting portion 622 is fitted around the outer peripheral surface of the first abutting portion 33, the third abutting portion 622 moves in the first direction on the outer peripheral surface of the first abutting portion 33, the seal ring 5 is fitted around the outer peripheral surface of the first abutting portion 33, and one end of the seal ring 5 abuts against the connecting portion 32, and the other end of the seal ring 5 abuts against the third abutting portion 622. When the transmission rod 42 drives the sealing pressure head 3 to move along the first direction, the connecting part 32 of the sealing pressure head 3 extrudes the sealing ring 5 along the first direction, the sealing ring 5 deforms and bulges outwards along the radial direction of the sealing ring 5 under the extrusion of the connecting part 32 and the third abutting part 622, the sealing and blocking of the pipeline are realized, and after the first abutting part 33 of the sealing pressure head 3 abuts against the second abutting part 621 of the first taper sleeve 62, the extrusion is completed, and the sealing and blocking of the pipeline are realized.
Further, as shown in fig. 8 and 9, the second taper sleeve 63 includes a fourth abutting portion 631 and a fifth abutting portion 632, and a step shape is formed between the fourth abutting portion 631 and the fifth abutting portion 632, in this embodiment, the fourth abutting portion 631 abuts against the second cover plate 2, the fourth abutting portion 631 and the second cover plate 2 are connected and fixed by bolts, and in other embodiments, other structures may be connected and fixed between the fourth abutting portion 631 and the second cover plate 2. There is accommodation space between fifth butt portion 632 and second apron 2, and first gear 41 sets up in accommodation space, and second gear 421 with first gear 41 meshing also sets up in accommodation space, reduces the overall structure of internal expanding type sealed end cap, improves space utilization.
Further, as shown in fig. 6 to 9, the two ends of the tension ring 61 are respectively provided with a first inclined plane 611 and a second inclined plane 612, the first taper sleeve 62 is provided with a first conical surface 6211, the second taper sleeve 63 is provided with a second conical surface 6321, the first conical surface 6211 is matched with the first inclined plane 611, the second conical surface 6321 is matched with the second inclined plane 612, and the first taper sleeve 62 and the second taper sleeve 63 respectively press the tension ring 61 along the first conical surface 6211 and the second conical surface 6321 so that the tension ring 61 performs tension fastening on a piece to be sealed. Specifically, the first tapered surface 6211 is provided on the outer peripheral surface of the second contact portion 621, and the second tapered surface 6321 is provided on the outer peripheral surface of the fifth contact portion 632. When the transmission rod 42 drives the sealing ram 3 to move along the first direction, the connecting part 32 of the sealing ram 3 extrudes the sealing ring 5 along the first direction, the sealing ring 5 deforms and bulges outwards along the radial direction of the sealing ring 5 under the extrusion of the connecting part 32 and the third abutting part 622, so that the pipeline is plugged, in the process of plugging the pipeline by the sealing ring 5, a part of force along the first direction is transmitted to the third abutting part 622 through the sealing ring 5, the third abutting part 622 transmits the force to the tensioning ring 61, at the moment, the tensioning ring 61 bulges outwards along the radial direction to be attached to the inner wall of the pipeline, but at the moment, the tensioning force of the tensioning ring 61 on the inner wall of the pipeline is small, and the tensioning force of the inner wall of the pipeline is insufficient. After the first abutting portion 33 of the sealing ram 3 abuts against the second abutting portion 621 of the first taper sleeve 62, extrusion is completed, the sealing ring 5 achieves complete sealing and blocking of the pipeline, the transmission rod 42 continues to drive the sealing ram 3 to move along the first direction, force along the first direction is transmitted to the third abutting portion 622 through the sealing ring 5, the force is transmitted to the tensioning ring 61 by the third abutting portion 622, the tensioning ring 61 is extruded to bulge along the radial direction under the combined action of the third abutting portion 622 and the fifth abutting portion 632, large deformation is achieved, complete tensioning of the pipeline is achieved, and the inner expanding type sealing plug is prevented from being separated from the inner wall of the pipeline.
Further, as shown in fig. 2 to 9, when the pressure test is performed, the water pressure acts on the first cover plate 1 to generate an axial thrust along the first direction, and the axial thrust finally converts the first conical surface 6211 of the first conical sleeve 62 and the second conical surface 6321 of the second conical sleeve 63 into a radial clamping force of the tension ring 61, so as to firmly lock the pipe inner wall. Therefore, the tension force in the pipe wall of the internal expansion type sealing plug is increased along with the increase of the water pressure of the pipeline, and the self-locking performance is achieved, so that the internal expansion type sealing plug is safer and more reliable. The invention further comprises copper sleeves 8, wherein the copper sleeves 8 are arranged at two ends of the second gear 421 of the transmission rod 42, the copper sleeves 8 are in interference fit with the second cone sleeve 63, and the copper sleeves 8 are in clearance fit with the transmission rod 42.
Further, as shown in fig. 6 to 9, the sealing ram is provided with a first through hole 31, the first taper sleeve 62 is provided with a second through hole 623, the second taper sleeve 63 is provided with a third through hole 633, the transmission rod 42 sequentially passes through the second through hole 623 and the third through hole 633 and is in threaded connection with the first through hole 31 of the sealing ram 3, and in this embodiment, the transmission rod 42 is in clearance fit with the second through hole 623 and the third through hole 633, so that the first taper sleeve 62 and the second taper sleeve 63 cannot interfere with the rotation of the transmission rod 42 in the rotation process of the transmission rod 42.
Further, as shown in fig. 2, the internal expansion sealing plug of the present invention further includes a limiting member 7, where the limiting member 7 is disposed at an end of the transmission rod 42 away from the second gear 421, and the limiting member 7 is used to limit the transmission rod 42 on the sealing ram 3, so as to prevent the transmission rod 42 from being separated from the sealing ram 3 during rotation.
The working principle of the internal expansion type sealing plug in the invention is as follows:
before the pipeline is filled with water, the internal expansion type sealing plug is placed into the tail end of the pipeline, a wrench is used for being inserted into the hexagonal hole 411 of the first gear 41, locking torque is input, the first gear 41 rotates, the second gear 421 is driven to rotate, the second gear 421 rotates to drive the sealing pressure head 3 screwed with the second gear 421 to move along a first direction, the sealing pressure head 3 moves along the first direction, and the sealing ring 5 and the tensioning assembly 6 between the sealing pressure head 3 and the second cover plate 2 are extruded under stress. Specifically, when the transmission rod 42 drives the sealing ram 3 to move along the first direction, the connecting portion 32 of the sealing ram 3 extrudes the sealing ring 5 along the first direction, the sealing ring 5 deforms and bulges outwards along the radial direction of the sealing ring 5 under the extrusion of the connecting portion 32 and the third abutting portion 622, so that the pipeline is plugged, in the process of plugging the pipeline by the sealing ring 5, a part of force along the first direction can be transmitted to the third abutting portion 622 through the sealing ring 5, the third abutting portion 622 transmits the force to the tensioning ring 61, and at the moment, the tensioning ring 61 bulges outwards along the radial direction to be attached to the inner wall of the pipeline, but at the moment, the tensioning force of the tensioning ring 61 on the inner wall of the pipeline is small, so that the inner wall of the pipeline is not tensioned sufficiently. After the first abutting portion 33 of the sealing ram 3 abuts against the second abutting portion 621 of the first taper sleeve 62, extrusion is completed, the sealing ring 5 achieves complete sealing and blocking of the pipeline, the transmission rod 42 continues to drive the sealing ram 3 to move along the first direction, force along the first direction is transmitted to the third abutting portion 622 through the sealing ring 5, the force is transmitted to the tensioning ring 61 by the third abutting portion 622, the first conical surface 6211 and the second conical surface 6321 of the second taper sleeve 63 are respectively attached to the first inclined surface 611 and the second inclined surface 612 of the tensioning ring 61, and at the moment, the axial locking force of the transmission rod 42 is converted into radial clamping force of the tensioning ring 61 by the first conical surface 6211 and the second conical surface 6321, and the radial clamping force is firmly locked on the inner wall of the pipeline.
When the pressure test is carried out, the water pressure acts on the first cover plate 1 to generate axial thrust along the first direction, and the axial thrust finally converts the first conical surface 6211 of the first taper sleeve 62 and the second conical surface 6321 of the first taper sleeve 62 into radial clamping force of the tension ring 61, so that the tension ring is firmly locked on the inner wall of the pipeline. Therefore, the tension force of the inner expansion type sealing plug on the inner wall of the pipeline is increased along with the increase of the water pressure of the pipeline, and the self-locking performance is realized, so that the pipeline is safer and more reliable.
It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (5)
1. The internal expansion type sealing plug is characterized by comprising a first cover plate and a second cover plate, wherein a sealing pressure head is arranged on the first cover plate, a power assembly is arranged on the second cover plate and connected with the sealing pressure head, a sealing ring and a tensioning assembly are arranged between the power assembly and the sealing pressure head, the power assembly extrudes the sealing ring and the tensioning assembly along a first direction through the sealing pressure head so that the sealing ring seals a part to be sealed, and the tensioning assembly performs tensioning fixation on the part to be sealed; the power assembly is rotationally arranged on the second cover plate and is in threaded connection with the sealing pressure head, and the power assembly rotates to enable the sealing pressure head to move along the first direction; the power assembly comprises a first transmission piece and a second transmission piece, the first transmission piece is arranged on the second cover plate, the first transmission piece is in transmission fit with the second transmission piece, the second transmission piece is in threaded connection with the sealing press head, and the first transmission piece drives the second transmission piece to transmit so that the sealing press head moves along the first direction; the first transmission piece is a first gear, the second transmission piece is a transmission rod, one end of the transmission rod is provided with a second gear, and the first gear and the second gear are meshed for transmission, so that the transmission rod drives the sealing pressure head to move along a first direction, the sealing pressure head extrudes the sealing ring along the first direction, the sealing ring deforms under the extrusion of the sealing pressure head and bulges outwards along the radial direction of the sealing ring, and the sealing of a pipeline is realized;
the tensioning assembly comprises a tensioning ring, a first taper sleeve and a second taper sleeve, the tensioning ring is arranged between the first taper sleeve and the second taper sleeve, the first taper sleeve is arranged at one end of the sealing ring, which is far away from the sealing pressure head, and the second taper sleeve is arranged on the second cover plate; the sealing pressing head is provided with a first abutting part, the first taper sleeve is provided with a second abutting part, the first abutting part abuts against the second abutting part, so that the sealing ring seals a piece to be sealed, after the first abutting part of the sealing pressing head abuts against the second abutting part of the first taper sleeve, the sealing ring achieves complete sealing and blocking of a pipeline, and then the first taper sleeve and the second taper sleeve apply radial clamping force to the tensioning ring, so that the tensioning ring is firmly locked on the inner wall of the pipeline.
2. The internal expanding type sealing plug according to claim 1, wherein the sealing pressure head is provided with a first through hole, an internal thread is arranged in the first through hole, an external thread is arranged on the transmission rod, and the internal thread is in threaded connection with the external thread.
3. The internal expanding type sealing plug according to claim 1, wherein a first inclined plane and a second inclined plane are respectively arranged at two ends of the expanding ring, the first inclined plane is matched with the first taper sleeve, the second inclined plane is matched with the second taper sleeve, and the first taper sleeve and the second taper sleeve respectively squeeze the expanding ring along the first inclined plane and the second inclined plane so that the expanding ring can expand and fasten a piece to be sealed.
4. The internal expanding type sealing plug according to claim 1, wherein the first taper sleeve is provided with a second through hole, the second taper sleeve is provided with a third through hole, and the transmission rod sequentially penetrates through the second through hole and the third through hole to be in threaded connection with the sealing press head.
5. The internal expanding type sealing plug of claim 1, further comprising a limiting member disposed at an end of the transmission rod away from the second gear, the limiting member being configured to limit the transmission rod to the sealing press head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311010547.5A CN116734080B (en) | 2023-08-11 | 2023-08-11 | Internal expansion type sealing plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311010547.5A CN116734080B (en) | 2023-08-11 | 2023-08-11 | Internal expansion type sealing plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116734080A CN116734080A (en) | 2023-09-12 |
| CN116734080B true CN116734080B (en) | 2023-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311010547.5A Active CN116734080B (en) | 2023-08-11 | 2023-08-11 | Internal expansion type sealing plug |
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| CN (1) | CN116734080B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1258369A (en) * | 1970-07-21 | 1971-12-30 | ||
| US4848406A (en) * | 1987-09-11 | 1989-07-18 | Siemens Aktiengesellschaft | Sealing device for a pipeline, in particular for a loop line of a steam generator hemisphere |
| EP0615092A1 (en) * | 1993-03-10 | 1994-09-14 | ETABLISSEMENTS TROUVAY & CAUVIN Société Anonyme | Plug, specially for tubes or the bore of a heat exchanger, in which pressurized fluid circulates |
| CN101975327A (en) * | 2010-10-21 | 2011-02-16 | 中北大学 | Mechanical type pipeline leak-stopping device capable of quickly increasing diameter |
| CN108730669A (en) * | 2018-06-19 | 2018-11-02 | 哈尔滨工程大学 | A kind of intelligent plugging device for submarine pipeline reparation |
| WO2020264015A1 (en) * | 2019-06-25 | 2020-12-30 | Usa Industries, Inc | Gripping apparatus and devices for plugging of pipes, orifices or connecting |
| CN115717668A (en) * | 2021-08-24 | 2023-02-28 | 中国石油化工股份有限公司 | Hydraulic drive variable-diameter pipeline plugging system and plugging method |
| CN219327892U (en) * | 2023-04-18 | 2023-07-11 | 东莞市精建自动化设备有限公司 | Internal expansion type plugging head |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201019784D0 (en) * | 2010-11-23 | 2011-01-05 | Furmanite Internat Ltd | Closure assembly for pipe end |
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2023
- 2023-08-11 CN CN202311010547.5A patent/CN116734080B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1258369A (en) * | 1970-07-21 | 1971-12-30 | ||
| US4848406A (en) * | 1987-09-11 | 1989-07-18 | Siemens Aktiengesellschaft | Sealing device for a pipeline, in particular for a loop line of a steam generator hemisphere |
| EP0615092A1 (en) * | 1993-03-10 | 1994-09-14 | ETABLISSEMENTS TROUVAY & CAUVIN Société Anonyme | Plug, specially for tubes or the bore of a heat exchanger, in which pressurized fluid circulates |
| CN101975327A (en) * | 2010-10-21 | 2011-02-16 | 中北大学 | Mechanical type pipeline leak-stopping device capable of quickly increasing diameter |
| CN108730669A (en) * | 2018-06-19 | 2018-11-02 | 哈尔滨工程大学 | A kind of intelligent plugging device for submarine pipeline reparation |
| WO2020264015A1 (en) * | 2019-06-25 | 2020-12-30 | Usa Industries, Inc | Gripping apparatus and devices for plugging of pipes, orifices or connecting |
| CN115717668A (en) * | 2021-08-24 | 2023-02-28 | 中国石油化工股份有限公司 | Hydraulic drive variable-diameter pipeline plugging system and plugging method |
| CN219327892U (en) * | 2023-04-18 | 2023-07-11 | 东莞市精建自动化设备有限公司 | Internal expansion type plugging head |
Also Published As
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|---|---|
| CN116734080A (en) | 2023-09-12 |
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