CN202562714U - Hydraulic structure joint permeability negative pressure detector - Google Patents
Hydraulic structure joint permeability negative pressure detector Download PDFInfo
- Publication number
- CN202562714U CN202562714U CN2012201891315U CN201220189131U CN202562714U CN 202562714 U CN202562714 U CN 202562714U CN 2012201891315 U CN2012201891315 U CN 2012201891315U CN 201220189131 U CN201220189131 U CN 201220189131U CN 202562714 U CN202562714 U CN 202562714U
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- groove
- grooved
- negative pressure
- pressure detector
- flexible sucker
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Abstract
Provided is a hydraulic structure joint permeability negative pressure detector, characterized in that: a groove-shaped flexible sucker is in the shape of a ring as a whole, with the cross section thereof like a groove; the opening end of the groove shape is located at the ring-shape outer edge; the diameter of the outer edge is equal to the inner diameter of a hydraulic tunnel; the groove-shaped cavity of the groove-shaped flexible sucker is internally provided with a groove-shaped support case; and a pump and a vacuum pump are respectively communicated with the groove-shaped cavity of the groove-shaped flexible sucker via pipelines. With the above structure, the hydraulic structure joint permeability negative pressure detector of the utility model utilizes the negative pressure to replace the positive pressure water filling to carry out detection, thereby solving the defects of the commonly adopted pump-in tests, such as complicated operation, the demand for the installation of a pressure support frame, low efficiency, and large investment. The hydraulic structure joint permeability negative pressure detector has the advantages of clear design principle, simple structure, easy making, convenient operation, and low cost.
Description
Technical field
The utility model relates to the seam detection range in water conservancy project tunnel, is a kind of hydraulic structures seam perviousness negative-pressure detector.
Background technology
Along with being on the increase of China seepage tunnel; At present in the tunnel seam testing process; Generally adopt the packer permeability test method to carry out the seam leak test, promptly form closed space, in the space, fill the press water inspection at joint surface; The problem that exists is: need on the closed space inner casing, apply anchorage force, to resist the inner hydraulic pressure that detects; Running into seam complicacy or works is situation such as large-scale diversion tunnel, need set up pressure support stand etc., and it is big to detect labour intensity, and efficient is low, and expense is high, has a strong impact on project progress, can not satisfy modern works seam perviousness and detect requirement.
Summary of the invention
The utility model technical matters to be solved provides a kind of hydraulic structures seam perviousness negative-pressure detector, can detect the seepage situation of hydraulic structures seam quickly and easily.
For solving the problems of the technologies described above; The technical scheme that the utility model adopted is: a kind of hydraulic structures seam perviousness negative-pressure detector; Grooved flexible sucker integral body ringwise; Its xsect becomes grooved, and the openend of this grooved is positioned at the outer edge surface of annular, and the diameter of this outer edge surface is identical with the internal diameter in water conservancy project tunnel;
Be provided with grooved in the grooved chamber of described grooved flexible sucker and support case, water pump and vacuum pump are communicated with the grooved chamber of grooved flexible sucker through pipeline respectively.
The pipeline that is communicated with water pump is provided with second valve, and the pipeline that is communicated with vacuum pump is provided with first valve.
Described pipeline passes and is fixed on grooved and supports on the case.
The utility model is through adopting above-mentioned structure, and realization has solved in the existing hydraulic structures seam infiltration testing process with the scheme that negative pressure replaces the malleation water-filling to detect; The complicated operation that generally adopts packer permeability test to bring; Need the setting pressure support stand, efficient is low, invests problems such as big; Advantages such as it is clear to have design concept, simple in structure, as to be easy to make, easy to operate, with low cost.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is described further:
Fig. 1 is the one-piece construction synoptic diagram of the utility model.
Fig. 2 is the A-A view of Fig. 1.
Among the figure: grooved supports case 1, grooved flexible sucker 2, water pump 3, vacuum pump 4, pipeline 5, the first valves 6, water conservancy project tunnel 7, the second valves 8.
Embodiment
Like a kind of hydraulic structures seam perviousness negative-pressure detector among Fig. 1, grooved flexible sucker 2 integral body ringwise, its xsect becomes grooved, the openend of this grooved be positioned at the annular outer edge surface, the diameter of this outer edge surface is identical with the internal diameter in water conservancy project tunnel 7;
In Fig. 2, be provided with grooved in the grooved chamber of described grooved flexible sucker 2 and support case 1, water pump 3 is communicated with the grooved chamber of grooved flexible sucker 2 through pipeline 5 respectively with vacuum pump 4.In the scheme of optimizing, described pipeline 5 passes and is fixed on grooved and supports on the case 1.
The pipeline 5 that is communicated with water pump 3 is provided with second valve 8, and the pipeline 5 that is communicated with vacuum pump 4 is provided with first valve 6.
Grooved supporting box 1 is arranged in the grooved flexible sucker 2, when forming negative pressure, plays a supportive role;
During use,, guarantee air tight with the outer edge surface of grooved flexible sucker 2 and the inwall bonding (with meeting water-soluble glue) of 7 seam both sides, water conservancy project tunnel; After the bonding closure of whole seam, open first valve 6, start vacuum pump 4 air in the grooved flexible sucker 2 is discharged the formation negative pressure; After reaching setting value, close first valve 6 and vacuum pump 4, after in this process, forming negative pressure and reach design load by vacuum pump 4; (design code value that negative pressure can continue a period of time; Be generally 30min), can judge that this seam is held one's breath effect can be qualified, otherwise be defective.
Open second valve 8, start water pump 3, water-filling in the grooved chamber of grooved flexible sucker 2, the colloid of bonding grooved flexible sucker 2 are met water and were lost efficacy, and make whole piece grooved flexible sucker 2 break away from water conservancy project tunnel 7 seam both sides inwalls, carry out next cycle operation.
The utility model; Solved in the existing hydraulic structures seam infiltration testing process, the complicated operation that generally adopts packer permeability test to bring needs the setting pressure support stand; Efficient is low; Advantages such as invest problems such as big, it is clear to have design concept, simple in structure, as to be easy to make, easy to operate, with low cost.
Claims (3)
1. hydraulic structures seam perviousness negative-pressure detector; It is characterized in that: grooved flexible sucker (2) integral body ringwise; Its xsect becomes grooved, and the openend of this grooved is positioned at the outer edge surface of annular, and the diameter of this outer edge surface is identical with the internal diameter of water conservancy project tunnel (7);
Be provided with grooved in the grooved chamber of described grooved flexible sucker (2) and support case (1), water pump (3) and vacuum pump (4) are communicated with the grooved chamber of grooved flexible sucker (2) through pipeline (5) respectively.
2. hydraulic structures seam perviousness negative-pressure detector according to claim 1 is characterized in that: the pipeline (5) that is communicated with water pump (3) is provided with second valve (8), and the pipeline (5) that is communicated with vacuum pump (4) is provided with first valve (6).
3. hydraulic structures seam perviousness negative-pressure detector according to claim 1 is characterized in that: described pipeline (5) passes and is fixed on grooved and supports on the case (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201891315U CN202562714U (en) | 2012-04-28 | 2012-04-28 | Hydraulic structure joint permeability negative pressure detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201891315U CN202562714U (en) | 2012-04-28 | 2012-04-28 | Hydraulic structure joint permeability negative pressure detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202562714U true CN202562714U (en) | 2012-11-28 |
Family
ID=47212359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201891315U Expired - Fee Related CN202562714U (en) | 2012-04-28 | 2012-04-28 | Hydraulic structure joint permeability negative pressure detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202562714U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104401471A (en) * | 2014-10-17 | 2015-03-11 | 武汉大学 | Crack detection apparatus for hydraulic structure under high water head, and method thereof |
-
2012
- 2012-04-28 CN CN2012201891315U patent/CN202562714U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104401471A (en) * | 2014-10-17 | 2015-03-11 | 武汉大学 | Crack detection apparatus for hydraulic structure under high water head, and method thereof |
| CN104401471B (en) * | 2014-10-17 | 2016-06-08 | 武汉大学 | Hydraulic structure crack detecting device and method under a kind of high water head |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121128 Termination date: 20190428 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |