CN212721957U - Leak source detects uses pipeline end plugging device - Google Patents
Leak source detects uses pipeline end plugging device Download PDFInfo
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- CN212721957U CN212721957U CN202021529561.8U CN202021529561U CN212721957U CN 212721957 U CN212721957 U CN 212721957U CN 202021529561 U CN202021529561 U CN 202021529561U CN 212721957 U CN212721957 U CN 212721957U
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Abstract
A pipeline end plugging device for leak detection comprises an annular base, a rubber sealing bag and an end sealing plate, wherein the annular base is sealed and coaxially fixedly connected to the opening end of a pipeline, and one side of the annular base is fixedly connected with the end sealing plate through an axial sealing bolt; the periphery of the rubber sealing bag is clamped and sealed by an annular base and an end head sealing plate, the middle part of the rubber sealing bag extends towards the interior of the pipeline and divides the interior of the pipeline into a pressure detection area and a pressure control area; the vacuum tube penetrates through the end sealing plate, one end of the vacuum tube is connected with the vacuum pump, and the other end of the vacuum tube penetrates through the rubber sealing bag in a sealing mode and extends to the pressure control area in the pipeline. The pipeline end plugging device can effectively solve the problem that the rubber sealing bag is flushed out by pipeline pressure, is simple in structure and easy to construct, and is widely suitable for pipeline leakage point detection construction in municipal water supply and drainage engineering.
Description
Technical Field
The utility model relates to a pipeline overhauls technical field, concretely relates to leak source detects uses pipeline end plugging device.
Background
The pipeline is a water supply and drainage facility commonly used in municipal engineering, in the prior art, when water supply and drainage pipelines have leakage, infiltration or leakage needs to be determined at first, at the moment, two ends of the pipeline need to be plugged, so that water flow is prevented from being further damaged, and the pipeline plugging can save the cost of pipeline maintenance; however, the current plugging technology is too complex, inconvenient to operate and consumes a great deal of time and labor; in addition, the existing mode of plugging the pipeline by adopting the rubber plugging bag cannot meet the condition of large pressure in the pipeline, particularly the situation that the rubber plugging bag is not tightly sealed and is installed insecurely, and the rubber plugging bag is flushed out of the pipeline by the pressure of the pipeline can be realized.
Therefore, how to adopt a safe pipeline plugging device, both can realize the end shutoff function in the pipeline leak source maintenance process, can effectively solve the problem that the rubber seal bag is rushed out by pipeline pressure again, is the problem that technical staff in the field need to solve urgently.
Through published patent searches, the following comparison documents were found:
a pipeline plugging device (CN210510726U) discloses a pipeline plugging device, belonging to the technical field of water supply and drainage pipe fittings. Including plugging device, nylon core and coupling, there is water clearance between plugging device's the conical surface and the hole of nylon core when changing plugging device under the condition of not cutting off the water supply, has reduced the water pressure effect of changing pipeline plugging device, and the screw thread that pipeline plugging device connected to screw up plugging device and coupling after fixing to the water pipe end eliminates water clearance, cuts off rivers and reaches the purpose of shutoff water pipe end, the utility model discloses a simple structure, convenient to use can be arranged to take the water pipe emergency repair of water pressure operation.
A sea pipe is suppressed and is used plugging device (CN210398108U) discloses a sea pipe is suppressed and is used plugging device, the several lower wedge block set screw that has worn the spring penetrate in the radial through-hole of ring body, the spring is arranged in the ring body outward, lower wedge block set screw is together fixed with lower wedge block, the hydro-cylinder is fixed on right flange, the piston rod of hydro-cylinder passes through the screw thread and is connected with last wedge block, make lower wedge block arrange in last wedge block inboard and the wedge surface is relative, right flange is fixed in on the ring body right side terminal surface. When the pipeline pressing sealing device is used, the pipeline pressing sealing device is connected with the end of the pipeline, the oil cylinder pressing piston rod drives the upper wedge block to move between the ring body and the lower wedge block, and after the oil cylinder pressure reaches a certain numerical value, the friction force between the lower wedge block and the pipeline can complete the fixation of the device on the pipeline. And adjusting the end surface blank cap and connecting the bolt assembly with the left flange to complete the sealing of the pipeline. The pipe sealing machine has the advantages of simple structure, reliable work, convenient use, repeated use and capability of completing the pressing and sealing operation on pipes with different diameters by replacing accessories.
Through analysis, the technical scheme and the realization function of the patent are different from those of the application, so that the novelty of the application is not influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's weak point, provide a leak source detects and uses pipeline end plugging device, this pipeline end plugging device can effectively solve the problem that rubber seal bag is washed out by pipeline pressure, and simple structure, and easily construction, the pipeline leak source that extensively is applicable to in the municipal administration water supply and drainage engineering detects the construction.
A pipeline end plugging device for leak detection comprises an annular base, a rubber sealing bag and an end sealing plate, wherein the annular base is sealed and coaxially fixedly connected to the opening end of a pipeline, and one side of the annular base is fixedly connected with the end sealing plate through an axial sealing bolt; the periphery of the rubber sealing bag is clamped and sealed by an annular base and an end head sealing plate, the middle part of the rubber sealing bag extends towards the interior of the pipeline and divides the interior of the pipeline into a pressure detection area and a pressure control area; the vacuum tube penetrates through the end sealing plate, one end of the vacuum tube is connected with the vacuum pump, and the other end of the vacuum tube penetrates through the rubber sealing bag in a sealing mode and extends to the pressure control area in the pipeline.
The annular base comprises an axial connecting plate and a circumferential fixing plate, wherein one side of the circumferential fixing plate is coaxially and fixedly connected with the axial connecting plate, and the circumferential fixing plate is radially penetrated and in threaded connection with a plurality of fastening bolts which are supported on the outer wall of the pipeline in a jacking mode; a plurality of sealing bolts are axially connected on the axial connecting plate in a penetrating manner, one ends of the sealing bolts penetrate through the rubber sealing bag and the end head sealing plate, and the other ends of the sealing bolts are in threaded connection with sealing nuts which are extruded on the side wall of the axial connecting plate in a matching manner.
And, the rigid coupling has first manometer on the end shrouding, and the sense terminal of this first manometer stretches into in the pressure detection area to the pipeline.
And the vacuum tube is communicated with a second pressure gauge, and the detection end of the second pressure gauge is communicated with the pressure control area of the pipeline through the vacuum tube.
The utility model has the advantages and the technical effect be:
the utility model discloses a leak source detects and uses pipeline end plugging device realizes the sealed rigid coupling of plugging device and pipeline end face through annular base, compresses tightly the axial connecting plate of annular base by the end shrouding, and then realizes the tight seal of clamp of rubber seal bag periphery to pierce through the rubber seal bag of location through sealing bolt, solved among the prior art rubber seal bag by the water pressure extrude the problem of plugging device; in addition, a circumferential fixing plate on the annular base is clamped and fixed on the circumferential outer wall of the pipeline through a fastening bolt in a jacking mode, leakage of the plugging device is avoided, the positive pressure of a pressure detection area in the pipeline is detected through a first pressure gauge, the positive pressure or the negative pressure of a pressure control area in the pipeline is detected through a second pressure gauge, and the cross section of a leakage point of the pipeline is judged in advance through the pressure difference of the positive pressure and the negative pressure.
The utility model discloses a leak source detects and uses pipeline end plugging device, effectively solved the pipeline plugging technique in the prior art too complicated, the inconvenient operation, consume the problem of a large amount of time and manpower; the problem that the rubber sealing bag is squeezed out of the plugging device by water pressure is solved, and the plugging device for the leak source detection pipeline end is high in creativity.
Drawings
FIG. 1 is a half-sectional view of the present invention;
in the figure: 1-end head sealing plate; 2-axial connecting plate; 3-circumferential fixing plate; 4-fastening bolts; 5-a pipeline; 6-rubber sealing bag; 7-vacuum tube; 8-a first pressure gauge; 9-sealing the nut; 10-a sealing bolt; 11-a second pressure gauge; 12-a vacuum pump; 13-a pressure control zone; 14-pressure detection zone.
Detailed Description
For further understanding of the contents, features and effects of the present invention, the following embodiments will be described in detail with reference to the accompanying drawings. It should be noted that the present embodiment is illustrative, not restrictive, and the scope of the invention should not be limited thereby.
A pipeline end plugging device for leak detection comprises an annular base, a rubber sealing bag 6 and an end sealing plate 1, wherein the annular base is sealed and coaxially fixedly connected to the opening end of a pipeline 5, and one side of the annular base is fixedly connected with the end sealing plate through an axial sealing bolt; the periphery of the rubber sealing bag is clamped and sealed by an annular base and an end head sealing plate, the middle part of the rubber sealing bag extends towards the interior of the pipeline and divides the interior of the pipeline into a pressure detection area 14 and a pressure control area 13; the end sealing plate is penetratingly connected with a vacuum tube 7, one end of the vacuum tube is connected with a vacuum pump 12, and the other end of the vacuum tube penetrates through the rubber sealing bag in a sealing manner and extends towards a pressure control area in the pipeline.
The annular base comprises an axial connecting plate 2 and a circumferential fixing plate 3, wherein one side of the circumferential fixing plate is coaxially and fixedly connected with the axial connecting plate, and the circumferential fixing plate is radially penetrated and in threaded connection with a plurality of fastening bolts 4 which are supported on the outer wall of the pipeline in a pressing mode; a plurality of sealing bolts 10 are axially connected on the axial connecting plate in a penetrating manner, one ends of the sealing bolts penetrate through the rubber sealing bag and the end head sealing plate, and the other ends of the sealing bolts are in threaded connection with sealing nuts 9 which are extruded on the side wall of the axial connecting plate in a matching manner.
And, the rigid coupling has first manometer 8 on the end shrouding, and the sense terminal of this first manometer stretches into in the pressure detection area to the pipeline.
And, the vacuum tube is communicated with a second pressure gauge 11, and the detection end of the second pressure gauge is communicated with the pressure control area of the pipeline through the vacuum tube.
To more clearly illustrate the embodiments of the present invention, an example is provided below with reference to the accompanying drawings:
the utility model discloses a sealing method does: when a certain section of pipeline needs to be subjected to leakage detection, the two ends of the pipeline are sealed, the material adopted for sealing is a high-strength synthetic fiber fabric stressed framework, and the inner and outer coating rubber is used as a plugging device of a protective layer, so that the residual at the pipe orifice is simply cleaned up, and the phenomenon that the rubber sealing bag is damaged due to uneven stress when being inflated is avoided.
When the plugging device is installed, the rubber sealing bag (namely a pressure detection area) is inflated by water (gas) through the charging and discharging pipeline to form a state of sealing between the rubber layer and the pipe wall, when required, the plugging device can be arranged at two ends of the pipeline, a stable positive pressure state or a stable negative pressure state is formed between the two plugging devices through charging (water) or pumping (water), and the fastening screw is screwed down to achieve a gas-tight state. The reason that sets up to split type structure between end shrouding and the annular base is for when actually carrying out the rubber seal bag and aerifing, can spill length adjustment sack size through adjusting the rubber seal bag to the operator can carry out more convenient operation to the rubber seal bag.
The size of the end sealing plate is larger than the pipe diameter of the operation object, one end of the annular base clamps the pipe wall, the other end of the annular base is fixed on the pipe wall through a positioning screw, and the tightness degree of the positioning screw is adjusted according to the stress condition.
Be provided with first manometer in the middle of the end shrouding, can observe the pressure variation condition in the rubber seal bag. A quick-acting connector is arranged beside the first pressure gauge and can be connected with a hose of an air pump.
The vacuum tube material is the steel material, is provided with the second manometer on the vacuum tube, can observe the pressure and the vacuum condition in the pipeline, and the vacuum tube can set up at rubber seal bag least significant end, also can set up at rubber seal bag top according to the condition, and the position of vacuum tube and rubber seal bag coincidence is wrapped up by rubber materials, can effectively prevent the not tight condition of sealing when rubber seal bag aerifys.
The working pressure in the rubber sealing bag is 0.2-0.6 Mpa, and the maximum pressure can bear more than 1 Mpa. The volume of the rubber sealing bag is larger than the diameter of a maintenance target pipeline, when the pressure in the rubber sealing bag reaches more than 0.2Mpa, the friction force caused by the positive pressure of the rubber sealing bag and the pipeline can be effectively increased, the rubber sealing bag is safely fixed at an initial position, and the working pressure of the rubber sealing bag is gradually increased according to the field situation.
The work pressure bearing of prestressed concrete pipeline is 0.4Mpa, when the pipeline internal pressure reaches more than 0.2Mpa, the vibration frequency and the range that leak and lead to all grow, reach the listening ware and detect the limit can. The method is especially suitable for the condition that the working pressure of the drainage pipeline is more than or equal to 0.1Mpa, and the pipeline is subjected to strength and tightness tests
Leak detection medium: the target pipeline section is inflated (water) into the target pipeline with the plugging device arranged at the two ends to form a positive pressure state (the pressure setting is related to the material and the leakage condition of the pipeline and the state of the object in the pipeline) or the air (water) is pumped to form a negative pressure state (the pressure setting is related to the material and the leakage condition of the pipeline and the state of the object outside the pipeline)
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.
Claims (4)
1. The utility model provides a leak source detects uses pipeline end plugging device which characterized in that: the sealing device comprises an annular base, a rubber sealing bag and an end head sealing plate, wherein the annular base is sealed and coaxially and fixedly connected at the opening end of a pipeline, and one side of the annular base is axially fixed with the end head sealing plate through a bolt; the periphery of the rubber sealing bag is clamped and sealed by an annular base and an end head sealing plate, the middle part of the rubber sealing bag extends towards the interior of the pipeline and divides the interior of the pipeline into a pressure detection area and a pressure control area; the vacuum tube penetrates through the end sealing plate, one end of the vacuum tube is connected with the vacuum pump, and the other end of the vacuum tube penetrates through the rubber sealing bag in a sealing mode and extends to the pressure control area in the pipeline.
2. The leak source detection pipeline end plugging device of claim 1, wherein: the annular base comprises an axial connecting plate and a circumferential fixing plate, wherein one side of the circumferential fixing plate is coaxially and fixedly connected with the axial connecting plate, and the circumferential fixing plate is radially penetrated and in threaded connection with a plurality of fastening bolts which are supported on the outer wall of the pipeline in a jacking mode; and a plurality of sealing bolts are axially connected on the axial connecting plate in a penetrating manner, one ends of the sealing bolts penetrate through the rubber sealing bag and the end head sealing plate, and the other ends of the sealing bolts are in threaded connection with sealing nuts which are extruded on the side wall of the axial connecting plate in a matching manner.
3. The leak source detection pipeline end plugging device of claim 1, wherein: the end head closing plate is fixedly connected with a first pressure gauge, and the detection end of the first pressure gauge extends into a pressure detection area of the pipeline.
4. The leak source detection pipeline end plugging device of claim 1, wherein: the vacuum tube is communicated with a second pressure gauge, and the detection end of the second pressure gauge is communicated with the pressure control area of the pipeline through the vacuum tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021529561.8U CN212721957U (en) | 2020-07-29 | 2020-07-29 | Leak source detects uses pipeline end plugging device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021529561.8U CN212721957U (en) | 2020-07-29 | 2020-07-29 | Leak source detects uses pipeline end plugging device |
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| CN212721957U true CN212721957U (en) | 2021-03-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116989959A (en) * | 2023-09-25 | 2023-11-03 | 徐州汇力金属材料检测有限公司 | Metal pipe fitting tightness detection device |
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2020
- 2020-07-29 CN CN202021529561.8U patent/CN212721957U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116989959A (en) * | 2023-09-25 | 2023-11-03 | 徐州汇力金属材料检测有限公司 | Metal pipe fitting tightness detection device |
| CN116989959B (en) * | 2023-09-25 | 2023-12-22 | 徐州汇力金属材料检测有限公司 | Metal pipe fitting tightness detection device |
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