CN117147058A - PCCP pipeline hydrostatic test plugging frame - Google Patents
PCCP pipeline hydrostatic test plugging frame Download PDFInfo
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- CN117147058A CN117147058A CN202310886369.6A CN202310886369A CN117147058A CN 117147058 A CN117147058 A CN 117147058A CN 202310886369 A CN202310886369 A CN 202310886369A CN 117147058 A CN117147058 A CN 117147058A
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- 230000002706 hydrostatic effect Effects 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 156
- 238000007789 sealing Methods 0.000 claims abstract description 26
- 238000003825 pressing Methods 0.000 claims description 7
- 238000005192 partition Methods 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 230000000087 stabilizing effect Effects 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000003466 welding Methods 0.000 description 5
- 244000208734 Pisonia aculeata Species 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000011372 high-strength concrete Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/022—Test plugs for closing off the end of a pipe
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Pipe Accessories (AREA)
Abstract
The invention relates to the technical field of pipeline plugging, in particular to a plugging rack for a PCCP pipeline hydrostatic test, which can effectively plug two ends of a pipeline when the pipeline hydrostatic test is met, ensure that the pressure in the pipeline can not leak, is convenient to mount and dismount, can support an inner sleeve assembly after being sleeved on the pipeline, enables the inner sleeve assembly to be placed in the pipeline, simultaneously enables the back support seat assembly to be pushed out by pulling a water filling assembly and simultaneously pulls back the front sliding assembly, enables the front sliding assembly to be matched and pressed with the back support seat assembly, firmly clamps the back support seat assembly on the pipeline, and further enables the end part of the pipeline to be plugged by the inner sleeve assembly in a sealing way.
Description
Technical Field
The invention relates to the technical field of pipeline plugging, in particular to a plugging rack for a hydraulic test of a PCCP pipeline.
Background
The Prestressed Concrete Cylinder Pipe (PCCP) is a composite pipe with high strength, high impermeability and high sealing performance, is manufactured by combining raw and auxiliary materials such as a thin steel plate, high-strength concrete, high-strength prestressed steel wires, high-strength mortar, rubber sealing rings and the like, is particularly suitable for large-caliber, high-working-pressure and high-earthing water supply projects, is connected by adopting a socket type, is sealed by installing the rubber sealing rings at socket grooves, needs to carry out a water pressure test in sections after the installation of a pressure pipe, and allows grid-connected water to be put into use after the water pressure test is qualified, and when the water pressure test is carried out on the pipe, the end part of the pipe needs to be plugged to ensure the normal running of the water pressure test.
At present, the plugging operation to the pipeline is all with the shutoff board welding at pipeline two ports, cut the dismantlement again after the hydrostatic test is accomplished, but to the welding of shutoff board and dismantlement work loaded down with trivial details to can harm the tip of pipeline, still need the welding stress relief to the pipeline after the shutoff board dismantles, test cost increases, inconvenient installation and dismantlement, prior art patent No. "CN105546267A" discloses a pipeline hydrostatic test plugging device, including pipe cap and pipeline fixation clamp, pipeline fixation clamp is fixed in the pipeline and is close to the tip of pipeline, pipe cap suit is at the tip of pipeline and with fixed connection between the fixation clamp, the pipe cap seals the port of pipeline, be provided with the sealing washer between the inner chamber of pipe cap and the peripheral wall of pipeline, be provided with the fixed sealing washer fixing device of sealing washer on the pipe cap, be provided with on the pipe cap with the water inlet joint, drainage joint and the exhaust joint of pipeline hole intercommunication, though can realize the tip at the tip of pipeline, realize sealing block through the pipe cap tip, and seal screw and the sealing screw is sealed to the pipe cap tip of pipeline is not present in the axial direction and the sealing screw of pipe cap seal that the sealing screw is difficult to the axial seal to the pipeline is realized to the sealing the pipeline, and the sealing screw is difficult to the sealing the pipeline is guaranteed to the sealing screw of the pipeline to the sealing screw.
Disclosure of Invention
The invention provides a PCCP pipeline hydrostatic test plugging rack, aiming at solving the defects and problems, and the invention aims to effectively plug two ends of a pipeline when the pipeline hydrostatic test is met, ensure that the pressure in the pipeline can not leak, and is convenient to mount and dismount, the inner sleeve assembly can be supported after the back support seat assembly and the front pressure sliding assembly are sleeved on the pipeline, the inner sleeve assembly is placed in the pipeline, and meanwhile, the water filling assembly is pulled to push out the back support seat assembly and simultaneously pull back the front pressure sliding assembly, so that the front pressure sliding assembly is matched and tightly pressed with the back support seat assembly, the back support seat assembly is firmly clamped on the pipeline, and the end part of the pipeline is sealed and plugged by the inner sleeve assembly.
The invention solves the technical problems by adopting the scheme that: the PCCP pipeline hydrostatic test plugging frame comprises a back supporting seat assembly, a front sliding assembly, an inner sleeve assembly and a traction water filling assembly, wherein the back supporting seat assembly comprises a base matched and sleeved at the end part of a pipeline, a U-shaped inner frame extends from the front side of the base, guide holes in the inner frame coaxial with the base are formed in the end part of the U-shaped inner frame, the outer circumferential side of the base is an inclined plane, a plurality of wedge-shaped grooves are formed in the outer circumferential side of the base in a penetrating manner in the radial direction, a wedge-shaped body with a flat bottom and an inclined upper structure is matched and sleeved in the wedge-shaped groove, a flat adjusting groove communicated with the wedge-shaped groove is formed in the front side wall of the base, and an adjusting block is sleeved in the adjusting groove and fixedly connected with the wedge-shaped body; the front pressing and sliding assembly comprises a sliding seat arranged at the rear side of the base, a U-shaped outer frame extends out of the front side of the sliding seat, an outer frame middle seat coaxial with a guide hole in the inner frame is arranged at the end part of the U-shaped outer frame, a matching inclined plane corresponding to the inclined plane of the base is arranged on the inner peripheral side wall of the sliding seat, and the sliding seat can be pushed forward to circumferentially extrude the wedge body through the matching inclined plane; the inner sleeve assembly comprises an inner sleeve coaxially communicated with the water delivery connecting rod, the water delivery connecting rod is sleeved in the middle seat of the outer frame and the guide hole in the inner frame, the water delivery connecting rod is fixed in the guide hole in the inner frame, and an annular groove is formed in the outer circumferential side of the inner sleeve; the traction water filling assembly comprises a spring water bag arranged between the middle seat of the outer frame and the guide hole in the inner frame, the spring water bag is sleeved on the water delivery connecting rod, the water delivery connecting rod is provided with a water filling hole communicated with the spring water bag, the annular water bag is sleeved in the annular groove of the inner sleeve, and the annular water bag is communicated with the inner sleeve cavity through a communicating pipe; when the spring water bag is inflated by water, thrust is applied to the base and the inner sleeve through the U-shaped inner frame, and meanwhile, the sliding seat is pulled to move forward by the U-shaped outer frame, the wedge-shaped body of the base is pressed circumferentially, so that the base is firmly fixed on a pipeline, and the end part of the pipeline is sealed after the annular water bag is inflated by water.
Further, the device also comprises an adjusting mechanism for pre-adjusting the spring water bag, the adjusting mechanism comprises a baffle plate arranged at the front side of the guide hole in the inner frame, the baffle plate is slidably sleeved on the water delivery connecting rod, an adjusting screw is sleeved on the guide hole in the inner frame, the outer end part of the adjusting screw is pressed against the baffle plate, and the adjusting screw can adjust the position of the baffle plate to realize pre-adjusting compression of the spring water bag.
Further, the U-shaped inner frame is composed of an outer sleeve and an inner sleeve, the outer sleeve is connected with the base, the inner sleeve is sleeved in the outer sleeve, and a baffle is arranged on the outer sleeve.
Further, a sealing partition plate is arranged in the water delivery connecting rod, a water filling hole is formed in the front side of the sealing partition plate, and a water outlet hole is formed in the rear side of the sealing partition plate, so that after the water delivery connecting rod expands the spring water bag, water in the spring water bag enters the inner sleeve through the water outlet hole.
Furthermore, the communicating pipe is arranged at the bottom of the inner sleeve, so that the bottom of the annular water bag can be inflated in advance, the inner bottom of the pipeline is sealed, and the pipeline is prevented from leaking.
Further, the inner sleeve is coaxially arranged in the pipeline, the inner sleeve is provided with a water outlet, and water in the inner sleeve enters the pipeline through the water outlet.
Further, an auxiliary section extends from the rear side of the base, and the slide seat is slidably sleeved on the auxiliary section.
Further, an auxiliary stabilizing component is also arranged in the inner sleeve.
The invention has the beneficial effects that: the invention has unique structure and ingenious design, the base and the sliding seat are matched and sleeved on the pipeline, the U-shaped outer frame and the U-shaped inner frame are in a cross shape and firm, the water delivery connecting rod is firm after the U-shaped inner frame and the U-shaped outer frame are firm, the inner sleeve can be directly blocked in the end part of the pipeline due to the firm pressing force of the base on the pipeline after the fixing of the U-shaped inner frame and the U-shaped outer frame, the spring water bag can be filled with water to expand, the spring water bag expands to push the U-shaped inner frame outwards, simultaneously, a pull-back force is applied to the U-shaped outer frame, the sliding seat is pulled by the U-shaped outer frame to move forwards, the matched inclined plane of the sliding seat presses the wedge body in the circumferential direction, the outer wall of the pipeline is directly pressed by the bottom of the wedge body, the base is pressed in the circumferential direction, the base is firmly clamped on the pipeline, the greater the circumferential pressing force of the wedge body is the greater when the sliding seat moves forwards, the inner sleeve is the circumferential pressing force of the wedge body is the pipeline is the greater, the inner sleeve is directly blocked in the pipeline, the inner sleeve is firmly blocked in the pipeline due to the fixing of the base and the sliding seat is the U-shaped outer frame, the U-shaped inner frame is firmly, the water bag is pushed by the inner sleeve, the water delivery connecting rod is firmly, the inner sleeve is pressed on the pipeline, the inner sleeve is directly, the inner sleeve is firmly, the pipeline is firmly, the inner sleeve is pressed on the pipeline and the pipeline is firmly, the inner sleeve and is tightly, the pipeline and the pipeline is tightly, the pipeline and the peripheral inner sleeve is and is tightly, and the pipeline.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention.
Fig. 2 is an exploded view of fig. 1.
FIG. 3 is a second schematic diagram of the structure of the present invention.
Fig. 4 is a partial cross-sectional view of the present invention.
FIG. 5 is a schematic view of an auxiliary stabilizing assembly.
Fig. 6 is a schematic view of an inner sleeve structure.
In the figure: the back support seat assembly 1, 11-base, 12-adjusting groove, 13-adjusting block, 14-U-shaped inner frame, 141-outer sleeve, 142-inner sleeve, 143-baffle, 15-guide hole in inner frame, front press sliding assembly 2, 21-slide, 22-wedge, 23-U-shaped outer frame, 24-outer frame middle seat, 25-adjusting screw, 26-baffle, inner sleeve assembly 3, 31-inner sleeve, 32-water delivery connecting rod, 33-communicating pipe, traction water filling assembly 4, 41-spring water bag, 42-annular water bag, 43-water filling hole, 44-water outlet hole, 5-pipeline, 6-sliding piston, 7-triangle locking block and 8-auxiliary spring air bag.
Detailed Description
The invention will be further described with reference to the drawings and examples.
Embodiment 1, the shutoff operation to the pipeline at present all welds the shutoff board at pipeline both ends mouth, and the hydrostatic test is accomplished the back and is cut the dismantlement again, but to the welding of shutoff board with dismantle work loaded down with trivial details to can harm the tip of pipeline, still need to eliminate the welding stress of pipeline after the shutoff board is dismantled, test cost increases, is inconvenient for installation and dismantlement, and current plugging device also can not stably guarantee the leakproofness to the pipeline, can appear the shutoff not tight, the problem of leakage appears.
To solve the above problems, this embodiment provides a PCCP pipeline hydrostatic test plugging frame, as shown in fig. 1-3, a base 11 can be matched and sleeved at the end of a pipeline 5, a U-shaped inner frame 14 is provided at the front side of the base 11, the U-shaped inner frame 14 is connected with the base 11, an inner frame middle guide hole 15 coaxial with the base 11 is provided at the outer end of the U-shaped inner frame 14, the outer circumference side of the base 11 is provided with an inclined plane, meanwhile, a plurality of wedge grooves are radially penetrated and provided at the outer circumference of the base 11, a wedge body 22 with a flat upper inclined plane structure is matched and sleeved in the wedge groove, a flat adjusting groove 12 is provided at the front side wall of the base 11, the adjusting block 13 is fixedly connected with the wedge body 22 and sleeved in the adjusting groove 12, the wedge body 22 is stabilized in the wedge groove by the adjusting block 13, and the wedge body 22 is prevented from falling from the wedge groove.
The sliding seat 21 is arranged at the rear side of the base 11, the auxiliary section is arranged at the rear side of the base 11 in an extending mode, the sliding seat 21 can be sleeved on the auxiliary section in a sliding mode, the ring diameter of the sliding seat 21 is larger than that of the base 11, a U-shaped outer frame 23 is arranged at the front side of the sliding seat 21, the length of the U-shaped outer frame 23 is larger than that of the U-shaped inner frame 14, after the base 11 and the sliding seat 21 are sleeved, the U-shaped inner frame 14 and the U-shaped outer frame 23 are distributed in a cross shape, stability is improved, an outer frame middle seat 24 coaxial with a guide hole 15 in the inner frame is arranged at the outer end portion of the U-shaped outer frame 23, a matching inclined surface corresponding to the inclined surface of the base 11 is arranged on the inner peripheral side wall of the sliding seat 21, when the sliding seat 21 is sleeved on the base 11 in a forward mode, the wedge 22 can be pressed circumferentially through the matching inclined surface, the bottom of the wedge 22 directly abuts against the outer wall of the pipeline 5, the base 11 is firmly clamped on the pipeline 5, and when the forward movement of the sliding seat 21 is larger in the circumferential direction, the wedge 22 is larger.
The water delivery connecting rod 32 is matched and arranged in the outer frame middle seat 24 and the inner frame middle guide hole 15, the water delivery connecting rod 32 is fixed in the inner frame middle guide hole 15 and fixedly connected with the inner frame middle guide hole 15, the inner sleeve 31 is coaxially connected to the output end of the water delivery connecting rod 32, the water delivery connecting rod 32 can deliver water to the inner sleeve 31, the inner sleeve 31 can be coaxially arranged in the pipeline 5, a water outlet is formed in the axis of the outer end part of the inner sleeve 31, water in the inner sleeve 31 can enter the pipeline 5 through the water outlet, an annular groove is formed in the outer circumference side of the inner sleeve 31, an annular water bag 42 is matched and sleeved in the annular groove, the annular water bag 42 is communicated with the inner cavity of the inner sleeve 31 in a sealing mode through the communicating pipe 33, the communicating pipe 33 is arranged at the inner bottom of the inner sleeve 31, when water enters the annular water bag 42 through the communicating pipe 33, the bottom of the annular water bag 42 can be inflated in advance, and the bottom of the pipeline 5 is sealed, and leakage of the pipeline is prevented.
A spring water bag 41 is arranged between an outer frame middle seat 24 and an inner frame middle guide hole 15, the spring water bag 41 is sleeved on a water delivery connecting rod 32, two ends of the spring water bag 41 are respectively connected with the outer frame middle seat 24 and the inner frame middle guide hole 15, a water filling hole 43 communicated with the spring water bag 41 is formed in the water delivery connecting rod 32, after the spring water bag 41 is filled with water and expanded, a pushing force is applied to the U-shaped inner frame 14, and simultaneously a pull-back force is applied to the U-shaped outer frame 23, so that the sliding seat 21 is pulled by the U-shaped outer frame 23 to move forwards, the wedge body 22 of the base 11 is Xiang Yajin, the water delivery connecting rod 32 is fixedly connected with the inner frame middle guide hole 15, so that the U-shaped outer frame 23 can slide on the water delivery connecting rod 32 through the outer frame middle seat 24, the output end of the water delivery connecting rod 32 fills water into the inner sleeve 31, the annular water bag 42 on the outer circumference side of the inner sleeve 31 is also expanded, the end part of the inner sleeve 5 is sealed, or the annular water bag 42 is preferably expanded, after the annular water bag is filled with the pipeline is filled, the annular water bag is additionally provided with a sealing baffle plate, the water is arranged in the water delivery connecting rod is sealed, and the water delivery hole is sealed on the inner side of the inner sleeve 31, and the water delivery hole is filled with water delivery baffle is filled after the water is filled.
When the travel problem of the spring water bag is considered, the adaptability of the spring water bag is improved, an adjusting mechanism for pre-adjusting the spring water bag is arranged, the adjusting mechanism comprises a baffle plate 26 arranged at the front side of a guide hole 15 in an inner frame, the baffle plate 26 is slidably sleeved on a water delivery connecting rod 32, adjusting screws 25 are uniformly sleeved on the guide hole 15 in the inner frame, the outer end part of the adjusting screw 25 is in contact with the baffle plate 26, the baffle plate 26 is pressed, the position of the baffle plate 26 can be adjusted by the adjusting screw 25, and the pre-adjusting compression of the spring water bag 41 is realized;
the U-shaped inner frame 14 can also adopt a sleeving structure, and is composed of an outer sleeve 141 and an inner sleeve 142, wherein the outer sleeve 141 is connected with the base 11, the inner sleeve 142 is sleeved in the outer sleeve 141, a baffle 143 is arranged on the inner sleeve 142, the inner sleeve 142 and the baffle 143 bear force to apply thrust to the base 11, if the sliding seat 21 is outwards separated, the inner sleeve only extends out of the outer sleeve, the base 11 cannot slide, and the base 11 cannot be separated from the pipeline 5.
When the assembly problem is considered, the base 11 and the sliding seat 21 can be assembled in advance through the U-shaped outer frame 23 and the U-shaped inner frame 14, the water delivery connecting rod 32 is sleeved in the middle seat 24 of the outer frame and the guide hole 15 of the inner frame, the inner sleeve 31 is arranged on the water delivery connecting rod 32, the base 11 is assembled to the end part of the pipeline 5, the inner sleeve 31 is coaxially arranged in the pipeline, the water delivery is carried in the water delivery connecting rod 32, the spring water bag 41 expands to push the U-shaped inner frame 14, simultaneously, the pull-back force is applied to the U-shaped outer frame 23, the sliding seat 21 is pulled by the U-shaped outer frame 23 to move forward, the matched inclined surface of the sliding seat 21 circumferentially presses the wedge 22, the bottom of the wedge 22 directly presses the outer wall of the pipeline 5, the base 11 is circumferentially pressed, the base 11 is firmly clamped on the pipeline, the greater the circumferential pressing force of the wedge 22 is, the greater the pressing force of the base 11 on the pipeline is, the inner sleeve 1 is further firmly blocked in the pipeline 5, the base 11 and the sliding seat 21 firmly fix the U-shaped inner frame 14 and the U-shaped outer frame 23, the U-shaped inner frame 14 and the U-shaped outer frame 23 firmly fix the water delivery connecting rod 32, the water delivery connecting rod 32 firmly fixes the inner sleeve 31 at the end part of the pipeline 5, the annular water bag 42 at the periphery of the inner sleeve 31 is inflated by water filling to seal the pipeline 5, then the water pressure test is carried out, when the description is needed, the annular water bag 42 is inflated from the bottom, the bottom in the pipeline 5 is blocked by the annular water bag 42 to prevent leakage, when the top of the annular water bag 42 is not inflated by water, the gas in the pipeline 5 is discharged through the gap between the annular water bag 42 and the upper pipe wall of the pipeline, the effect of thoroughly discharging the gas at the last moment when the pipeline is full of water is filled in the pipeline is carried out, the fixing the base 11 by the sliding seat 21 when the water pressure test is carried out, the inner sleeve 31 can be stably fixed on the position and is not influenced by the internal pressure of the pipeline, after the hydrostatic test is finished, the base and the sliding seat can be rapidly detached after water is discharged, the safety, stability and high efficiency of the hydrostatic test of the PCCP pipeline can be ensured, the problems of leakage and the like caused by the untight plugging in the test process are avoided, the reliability and stability of the pipeline are ensured, the device can be widely applied to other industries, such as the fields of construction, mines, common pipelines and the like, the hydraulic plugging problem under the emergency condition can be effectively solved, the working efficiency and the working safety are improved, the technical device which is innovative and effective in the hydrostatic test field of the PCCP pipeline can be greatly improved, the device is expected to be widely used in the future working practice, and an effective solution is provided for the fields of various engineering designs, production and life and the like.
Preferably, the inner sleeve is fixed inside the pipeline by the U-shaped outer frame and the U-shaped inner frame through the cooperation of the base and the sliding seat, in order to further ensure the blocking stability of the inner sleeve, an auxiliary stabilizing component is arranged in the inner sleeve, as shown in fig. 5, a sliding piston 6 is sleeved on a water delivery connecting rod 32 positioned in the inner sleeve, the sliding piston 6 divides the inner sleeve 31 into a front cavity and a rear cavity, a triangular locking block 7 is arranged at the rear side of the sliding piston 6, mounting holes corresponding to the triangular locking blocks 7 are formed in the inner sleeve 31, the triangular locking blocks 7 are mounted in the corresponding mounting holes, at least six triangular locking blocks are arranged, when the front cavity is filled with water, the sliding piston 6 is extruded, the triangular locking blocks 7 are pushed to rotate when the sliding piston 6 moves, corners of the triangular locking blocks 7 are blocked on the inner wall of the pipeline, the inner sleeve is stabilized, and meanwhile, a spring is arranged between the rear cavity and the sliding piston 6.
Preferably, the sealing of the annular water bag to the pipeline is achieved through water filling expansion, and the situation that the sealing effect is unstable is likely to occur in the early water filling stage, so that the auxiliary spring air bag 8 is arranged in the front cavity of the inner sleeve 31, the auxiliary spring air bag 8 is communicated with the annular water bag through an air pipe, water is not filled in the annular water bag any more, when the water is filled in the front cavity of the inner sleeve, the self weight of water can directly press the auxiliary spring air bag 8, gas in the auxiliary spring air bag 8 can be directly filled into the annular water bag, and the annular water bag can be inflated and sealed in real time.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Claims (8)
1. The PCCP pipeline hydrostatic test plugging frame is characterized by comprising a back supporting seat assembly, a front sliding assembly, an inner sleeve assembly and a traction water filling assembly, wherein the back supporting seat assembly comprises a base matched and sleeved at the end part of a pipeline, a U-shaped inner frame extends at the front side of the base, guide holes in the inner frame coaxial with the base are formed in the end part of the U-shaped inner frame, the outer circumferential side of the base is an inclined plane, a plurality of wedge-shaped grooves are formed in the outer circumferential side of the base in a penetrating manner in the radial direction, a wedge-shaped body with a flat bottom and an inclined upper structure is matched and sleeved in the wedge-shaped groove, a flat adjusting groove communicated with the wedge-shaped groove is formed in the front side wall of the base, and an adjusting block is sleeved in the adjusting groove and fixedly connected with the wedge-shaped body; the front pressing and sliding assembly comprises a sliding seat arranged at the rear side of the base, a U-shaped outer frame extends out of the front side of the sliding seat, an outer frame middle seat coaxial with a guide hole in the inner frame is arranged at the end part of the U-shaped outer frame, a matching inclined plane corresponding to the inclined plane of the base is arranged on the inner peripheral side wall of the sliding seat, and the sliding seat can be pushed forward to circumferentially extrude the wedge body through the matching inclined plane; the inner sleeve assembly comprises an inner sleeve coaxially communicated with the water delivery connecting rod, the water delivery connecting rod is sleeved in the middle seat of the outer frame and the guide hole in the inner frame, the water delivery connecting rod is fixed in the guide hole in the inner frame, and an annular groove is formed in the outer circumferential side of the inner sleeve; the traction water filling assembly comprises a spring water bag arranged between the middle seat of the outer frame and the guide hole in the inner frame, the spring water bag is sleeved on the water delivery connecting rod, the water delivery connecting rod is provided with a water filling hole communicated with the spring water bag, the annular water bag is sleeved in the annular groove of the inner sleeve, and the annular water bag is communicated with the inner sleeve cavity through a communicating pipe; when the spring water bag is inflated by water, thrust is applied to the base and the inner sleeve through the U-shaped inner frame, and meanwhile, the sliding seat is pulled to move forward by the U-shaped outer frame, the wedge-shaped body of the base is pressed circumferentially, so that the base is firmly fixed on a pipeline, and the end part of the pipeline is sealed after the annular water bag is inflated by water.
2. The PCCP pipeline hydrostatic test plugging frame according to claim 1, further comprising an adjusting mechanism for pre-adjusting the spring water bag, wherein the adjusting mechanism comprises a baffle plate arranged at the front side of a guide hole in the inner frame, the baffle plate is slidably sleeved on the water delivery connecting rod, an adjusting screw rod is sleeved on the guide hole in the inner frame, the outer end part of the adjusting screw rod is pressed against the baffle plate, and the adjusting screw rod can adjust the position of the baffle plate to realize pre-adjusting compression of the spring water bag.
3. The PCCP pipeline hydrostatic test plugging frame according to claim 1, wherein the U-shaped inner frame is composed of an outer sleeve and an inner sleeve, the outer sleeve is connected with a base, the inner sleeve is sleeved in the outer sleeve, and a baffle is arranged on the outer sleeve.
4. The PCCP pipeline hydrostatic test plugging frame according to claim 1, wherein a sealing partition plate is arranged in the water delivery connecting rod, a water filling hole is formed in the front side of the sealing partition plate, and a water outlet hole is formed in the rear side of the sealing partition plate, so that after the water delivery connecting rod expands the spring water bag, water in the spring water bag enters the inner sleeve through the water outlet hole.
5. The PCCP pipeline hydrostatic test plugging frame according to claim 1, wherein the communicating pipe is installed at the bottom of the inner sleeve, so that the bottom of the annular water bag can be pre-inflated, and the bottom in the pipeline is sealed to prevent the pipeline from leaking.
6. The PCCP pipeline hydrostatic test plugging frame according to claim 1, wherein the inner sleeve is coaxially disposed inside the pipeline, and a water outlet is formed in the inner sleeve, and water in the inner sleeve enters the pipeline through the water outlet.
7. The PCCP pipeline hydrostatic test plugging frame of claim 1, wherein an auxiliary section extends from a rear side of the base, and the slide is slidably fitted over the auxiliary section.
8. The PCCP pipe hydrostatic test plugging frame of claim 1, further comprising an auxiliary stabilizing assembly disposed within the inner sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310886369.6A CN117147058A (en) | 2023-07-19 | 2023-07-19 | PCCP pipeline hydrostatic test plugging frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310886369.6A CN117147058A (en) | 2023-07-19 | 2023-07-19 | PCCP pipeline hydrostatic test plugging frame |
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| CN117147058A true CN117147058A (en) | 2023-12-01 |
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| CN202310886369.6A Pending CN117147058A (en) | 2023-07-19 | 2023-07-19 | PCCP pipeline hydrostatic test plugging frame |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117990486A (en) * | 2024-04-03 | 2024-05-07 | 南京天人环保设备有限公司 | Pressure pipeline detection device |
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2023
- 2023-07-19 CN CN202310886369.6A patent/CN117147058A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117990486A (en) * | 2024-04-03 | 2024-05-07 | 南京天人环保设备有限公司 | Pressure pipeline detection device |
| CN117990486B (en) * | 2024-04-03 | 2024-05-28 | 南京天人环保设备有限公司 | Pressure pipeline detection device |
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