CN108661035B - Pressurized water test equipment - Google Patents
Pressurized water test equipment Download PDFInfo
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- CN108661035B CN108661035B CN201810623414.8A CN201810623414A CN108661035B CN 108661035 B CN108661035 B CN 108661035B CN 201810623414 A CN201810623414 A CN 201810623414A CN 108661035 B CN108661035 B CN 108661035B
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- cavity
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 215
- 238000012360 testing method Methods 0.000 title claims abstract description 64
- 239000002775 capsule Substances 0.000 claims abstract description 95
- 238000003825 pressing Methods 0.000 claims abstract description 29
- 238000002347 injection Methods 0.000 claims abstract description 17
- 239000007924 injection Substances 0.000 claims abstract description 17
- 230000004888 barrier function Effects 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 14
- 230000000903 blocking effect Effects 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 238000005553 drilling Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 5
- 230000009466 transformation Effects 0.000 abstract description 3
- 238000004804 winding Methods 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 abstract 1
- 125000006850 spacer group Chemical group 0.000 description 7
- 239000011435 rock Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 210000001503 joint Anatomy 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 208000005189 Embolism Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
- E02D1/02—Investigation of foundation soil in situ before construction work
- E02D1/027—Investigation of foundation soil in situ before construction work by investigating properties relating to fluids in the soil, e.g. pore-water pressure, permeability
Abstract
The application discloses a pressurized water test equipment includes: the core tube and the capsule which is sleeved on the surface of the core tube and can slide relatively with the core tube; wherein the capsule is provided with a water filling cavity and a water pressing cavity, the water pressing cavity is provided with a water outlet, and the water outlet of the capsule positioned below is provided with a water stop plug; the surface of the core tube is provided with a water injection port for injecting water into the water filling cavity and the water pressing cavity, and the bottom of the core tube is provided with a plug. The core pipe is pressed downwards and lifted upwards to control the transformation of the inner water channel of the capsule, so that the single pipeline can simultaneously control the switching of actions such as capsule water filling, water pressing of the water pressing cavity, capsule water discharging and the like, the problem of winding among pipelines caused by multiple pipeline laying is avoided, the equipment investment and cost are reduced, and the efficacy is improved; the method realizes the random sectional water pressing test of Quan Kong after final hole, and continuously performs the multi-section test, thereby avoiding cross interference with drilling, reducing repeated lifting and tripping, greatly improving the efficacy and reducing the cost.
Description
Technical Field
The invention relates to the field of water conservancy, in particular to a pressurized water test device.
Background
Before hydraulic facilities are built, a foundation is required to be explored by adopting a pressurized water test, and corresponding seepage prevention measures are determined according to exploration results. The water pressure test is an in-situ test for pressing water into a drill hole in a high-pressure mode and calculating and knowing the development condition and the water permeability of a rock mass fracture according to the water absorption capacity of the rock mass. The water pressure test is to isolate a drilling test section with a certain length by using special water stopping equipment, then to press water to the drilling test section by using a fixed water head, the water permeates into the rock mass through the cracks around the hole wall, and finally the permeated water tends to a stable value. According to the water pressure head, the length of the test section and the stable infiltration amount, the strength of the water permeability of the rock mass can be judged.
The existing water pressure test mainly comprises the steps of expanding and stopping water by means of mechanical jacking, air pressure, water pressure and the like, and then performing the water pressure test of a test section.
The mechanical jacking is the most traditional water stopping mode, and the plug of the mechanical jacking is positioned between the upper drill rod and the lower drill rod, and the upper drill rod is controlled to be pressed down before the test, so that the plug is vertically compressed and transversely expanded between the upper drill rod and the lower drill rod, and then is tightly attached to the hole wall, and the water stopping effect is achieved. And then injecting water to the lower part of the plug through the drill rod to carry out a water pressure test. The method has simple equipment and low operation difficulty, but has low efficacy. The drilling depth is required to be developed immediately, a section of test is required to be carried out every time a section (such as 5 m) is drilled, so that drilling equipment and pressurized water test equipment are required to be frequently used alternately, a large number of repeated installation and disassembly operations are caused, if the quality of rock mass is poor and a embolism cannot be effectively sealed, repeated drill-out and drill-down are required to carry out inspection analysis and bottom rod length allocation, and a large amount of time cost is wasted.
The pneumatic plug and the hydraulic plug mostly use two sets of pipelines, one set is used for expansion plug (water or gas) and one set is used for pressing water (or gas), and the pneumatic plug has the advantages of more equipment, complex pipelines, high cost, more operation procedures and high energy consumption.
Disclosure of Invention
The invention discloses a pressurized water test device, which aims to solve the problems of low efficiency and high cost of the existing pressurized water test device.
The application discloses a pressurized water test equipment includes:
the surface of the core tube is sleeved with a capsule, the core tube can slide along the axial direction of the core tube relative to the capsule, and the bottom of the core tube is provided with a plug;
the two ends of the capsule are connected with the surface of the core tube in a sealing way, the side surface of the capsule is provided with a sheath with deformation capability, the inside of the capsule is provided with a water filling cavity for filling water to swell the sheath and a water pressing cavity for filling water to the outside of the capsule, the water pressing cavity is provided with a water outlet communicated with the outside of the capsule, and the water outlet is arranged at the bottom of the capsule;
two capsules are arranged at intervals along the axial direction of the core tube, and a water stop plug for blocking the water outlet is arranged on the lower capsule;
the surface of the core tube is provided with a water injection port for injecting water into the water filling cavity and the water pressing cavity; the core tube moves relative to the capsule and can switch the communication between the water injection port and the water filling cavity or the water pressing cavity;
and the drill rod is arranged above the core pipe, is used for moving the core pipe and injecting water into the core pipe.
The water pressure test equipment comprises a core tube, wherein a sleeve is arranged between the outer skin and the core tube, a water filling cavity is arranged between the sleeve and the outer skin, and a water through hole communicated with the water filling cavity is formed in the wall of the sleeve.
The water pressure test equipment comprises a core pipe, a sleeve, a water pressure cavity, a water inlet pipe, a water outlet pipe, a water inlet pipe, a water outlet pipe and a water outlet pipe.
The water pressure test equipment comprises a core pipe, wherein the surface of the core pipe is provided with a limiting piece used for limiting the sliding range of the core pipe.
The water pressure test equipment comprises a capsule, wherein the top and the bottom of the capsule are respectively provided with a top cover and a base which are connected with the surface of the core tube in a sealing way, a sheath is fixed between the top cover and the base, and a limiting piece is positioned below the top cover above the water injection port; when the limiting piece is close to the top cover, the water injection port is communicated with the water filling cavity, and when the limiting piece is close to the base, the water injection port is communicated with the water pressing cavity.
The water pressure test equipment comprises a casing pipe and a casing pipe, wherein the casing pipe comprises an upper casing pipe and a lower casing pipe which are mutually butted, the bottom end of the upper casing pipe and the top end of the lower casing pipe are in threaded connection with the outer ring of the isolating ring, and the water through holes are formed in the surface of the upper casing pipe.
The water pressure test equipment comprises a core pipe, wherein the bottom end of the core pipe is fixedly connected with a barrier removing head, and the bottom of the barrier removing head is conical.
The water pressure test equipment comprises a water pressure test device, wherein a channel communicated with a core tube is arranged at the center of the barrier discharge head, and a plug is positioned at the center of the bottom of the barrier discharge head and is in threaded connection with the inner wall of the channel.
The water stop plug is in threaded connection with the inner wall of the water outlet.
The water pressure test equipment comprises a core tube and a water injection port, wherein the core tube comprises an inner tube and an outer tube which are mutually spliced, the top end of the inner tube is positioned in the capsule, the water injection port is formed in the position, close to the top end, of the inner tube, the bottom of the inner tube extends out of the capsule from the bottom of the capsule, and the bottom end of the outer tube extends into the capsule and is fixedly connected with the top end of the inner tube.
The invention provides a pressurized water test device, which controls the transformation of a water channel in a capsule by pressing down and lifting up a core pipe, so that the switching of actions of filling water in the capsule, pressurizing water in a pressurized water cavity, draining water in the capsule and the like can be simultaneously controlled by a single pipeline, the problem of winding among pipelines caused by the laying of multiple pipelines is avoided, the investment and cost of the device are reduced, and the efficacy is improved; the method realizes the random sectional water pressing test of Quan Kong after the final hole and continuous multi-section test, avoids cross interference with drilling, reduces repeated lifting and tripping, greatly improves the efficacy and reduces the cost; the dead weight of the equipment, the friction force of the hole wall and the change of the relative position between the equipment are utilized to realize low energy consumption and environmental protection; the obstacle removing head can dredge obstacles on the hole wall, common hole accidents such as blocking and burying are avoided, a test device is not required to be lifted up and put down again, the efficacy is improved, and the possible damage or loss of equipment is reduced; the capsule has large expansion and shrinkage rate of the outer skin, large contact area with the hole wall and good sealing effect with the hole wall after expansion.
Drawings
FIG. 1 is a schematic diagram of a pressurized water testing apparatus in accordance with an embodiment of the present invention;
FIG. 2 is a schematic view of a capsule according to an embodiment of the present invention;
FIG. 3 is a schematic view of a water stop plug according to an embodiment of the present invention;
FIG. 4 is a schematic view of the structure of the pressurized water testing apparatus before filling water in accordance with the embodiment of the present invention;
FIG. 5 is a schematic view of a structure of a water filling chamber when the water filling chamber is filled in an embodiment of the invention;
fig. 6 is a schematic structural diagram of the pressurized water chamber when water is injected in the embodiment of the present invention.
Detailed Description
The invention will be described in further detail below with reference to the drawings by means of specific embodiments.
The invention provides a pressurized water test device, which is shown in fig. 1-3, and comprises a core tube 1, a capsule 2 sleeved on the surface of the core tube 1, and a drill rod 3 fixedly connected with the core tube 1. Wherein, the bottom of the core tube 1 is provided with a detachable plug 10 for sealing the bottom of the core tube 1 to avoid water leakage, and the core tube 1 can slide along the axial direction of the core tube relative to the capsule 2. The part of the core tube 1 located inside the capsule 2 is provided with a water injection port 11 for injecting water into the capsule 2.
The two capsules 2 are arranged at intervals along the axial direction of the core tube 1, the two capsules 2 have the same structure, two ends of the capsules 2 are connected with the core tube 1 in a sealing way, and the side surface is provided with a crust 20 with great elastic deformation capability and toughness, such as rubber leather. The capsule 2 is internally provided with a water-filling cavity 21 and a water-pressing cavity 22 separated from the water-filling cavity 21. The bottom of the capsule 2 is provided with a water outlet 220 communicated with the pressurized water cavity 22, one end of the water outlet 220 is communicated with the pressurized water cavity 22, and the other end is communicated with a test section between the two capsules 2. As shown in fig. 2, a water stop plug 221 is provided at the water outlet 220 of the capsule 2 positioned below to block the water outlet 220 of the capsule 2, so that the water pressed in by the test section cannot flow out of the capsule 2. The water stop plug 221 is screwed on the inner wall of the water outlet 220 through threads, the detachable structure is adopted, the upper capsule 2 and the lower capsule 2 can be completely identical in structure, the lower capsule 2 is not required to be prepared independently, the water stop plug 221 is screwed at the bottom of the capsule 2 before use as a capsule arranged below, so that the single capsule 2 has universality, when the lower capsule 2 is damaged, the water stop plug 221 can be screwed at the water outlet 220 of other capsules 2 at any time for replacement, the production cost of equipment is reduced, the engineering progress is not influenced, and the operation is convenient.
As shown in fig. 2 and 3, the top and bottom of the capsule 2 are respectively provided with a top cover 23 and a base 24, the core tube 1 passes through the capsule 2 from the centers of the top cover 23 and the base 24, and the contact positions of the top cover 23 and the base 24 with the surface of the core tube 1 are connected in a sealing way through a sealing ring 4. The outer edges of the cover 20 are fixed to the outer edges of the top cover 23 and the base 24, respectively, so that a sealed capsule 2 is formed by the cover 20, the top cover 23 and the base 24.
A sleeve 5 is further arranged between the outer surface of the sheath 20 and the outer surface of the core tube 1, two ends of the sleeve 5 are respectively connected with the top cover 23 and the base 24 in a sealing way, thus a water filling cavity 21 is formed between the sleeve 5 and the outer surface 20, and a water through hole 50 used for communicating with the water filling cavity 21 is further formed on the surface of the sleeve 5. Thus, when the capsule 2 needs to be filled with water, water in the core tube 1 is injected into the water filling cavity 21 through the water filling port 11 and the water through hole 50, so that the outer skin 20 expands to be tightly attached to the hole wall to achieve the water stopping effect. The inside of the sleeve 5 is also provided with a spacer ring 51 at the middle position, the outer side of the spacer ring 51 is fixed on the inner surface of the sleeve 5, the inner side of the spacer ring is in sealing connection with the surface of the core tube 1 through a sealing ring 4, thus the space between the sleeve 5 and the core tube 1 is divided into two parts by the spacer ring 51, the part which is positioned above and communicated with the water filling cavity 21 through the water through hole 50 is a transition cavity 52, and the part below is the water pressing cavity 22. The water outlet 220 is arranged on the surface of the base 24 and is symmetrically provided with at least two positions.
The outer surface of the core tube 1 is positioned above the water filling port 11, a limiting piece 12 is fixed below the top cover 23 and close to the top cover 23, the limiting piece 12 limits the up-down movement range of the core tube 1 between the top cover 23 and the isolating ring 51, and when the core tube 1 moves up until the limiting piece 12 contacts with the inner surface of the top cover 23, the water filling port 11 is positioned just above the isolating ring 51 and is communicated with the water filling cavity 21 through the transition cavity 52; when the core tube 1 moves downwards until the limiting piece 12 is in contact with the isolating ring 51, the water injection port 11 is positioned below the isolating ring 51 and is communicated with the water pressing cavity 22. Thus, the communication between the water filling port 11 and the water filling chamber 21 and the water pressing chamber 22 can be switched by controlling the up-and-down movement of the core tube 1.
For easy manufacture and maintenance, the sleeve 5 in this embodiment is formed by splicing an upper sleeve 53 and a lower sleeve 54 that are butted with each other, wherein inner walls of the top end of the upper sleeve 53 and the bottom end of the lower sleeve 54 are respectively provided with an internal thread engaged with the outer surface of the spacer ring 51, so that the spacer ring 51 connects the upper sleeve 53 and the lower sleeve 54 through threads to form the whole sleeve 5. The structure is easy to produce and assemble, and meanwhile, the maintenance difficulty of equipment is reduced.
Since the drill holes to be tested are often deep, the size of the single core tube 1 is long, which is inconvenient to operate, and thus, in this embodiment, the core tubes 1 are connected to each other by screw threads in a spliced manner. Specifically, the core tube 1 includes an inner tube 13 having a top portion positioned inside the capsule 2, and an outer tube 14 communicating with the top portion of the inner tube 13, and the water filling port 11 is provided near the top end of the inner tube 13. Wherein the top of the inner tube 13 is positioned below the top cover 23, the tail part passes through the base 24 and extends out of the capsule 2, and the bottom of the outer tube 14 passes through the top cover 23 and is fixedly connected with the top of the inner tube 13. The limiting member 12 in this embodiment is annular, the inner surface of the limiting member is provided with an internal thread, and the outer surface of the joint between the inner tube 13 and the outer tube 14 is provided with an external thread engaged with the internal thread, so that the limiting member 12 not only limits the relative movement range between the core tube 1 and the capsule 2, but also realizes the butt joint between the inner tube 13 and the outer tube 14. Wherein, the bottom of the inner tube 13 of the capsule 2 positioned above is in butt joint with the outer tube 14 of the capsule 2 positioned below, and an extension tube can be added between the two capsules 2 according to the length of the test section.
The water conservancy exploration generally needs to drill holes in the rock wall, the surface of the hole wall is often uneven, such as protruding stones and the like, when test equipment is lowered into the hole, the test equipment is extremely easy to be blocked by protruding barriers on the hole wall, and the test equipment is easy to hook when lifted. In order to solve this problem, the present embodiment further fixes the barrier removing head 6 at the tail end of the core tube 1. Specifically, the lower surface of the barrier removing head 6 is conical with the tip downward, the upper end of the barrier removing head is fixedly connected with the core tube 1 through threads, the upper end of the barrier removing head is cylindrical, and the diameter of the barrier removing head is equal to the outer diameter of the capsule. Thus, when the device is lowered, the obstacle removing head 6 can remove the obstacles on the hole wall before the capsule 2 passes through, so that the device can move up and down smoothly.
For cleaning, a hollow channel communicated with the bottom of the core tube 1 is arranged at the center of the barrier removing head 6, and a plug 10 is screwed at the conical center of the barrier removing head 6 through threaded connection to plug the channel. When the equipment needs to be cleaned, the plug 10 is unscrewed, and then water is injected from the top of the core tube 1 for flushing.
When the water pressure test equipment disclosed by the embodiment is used, the water pressure test equipment needs to be assembled with ground auxiliary equipment, firstly, the core pipe 1 and the capsule 2 are assembled into a whole and hung in a hole, and then the outer pipe 14 positioned at the top of the capsule 2 above is in butt joint with the drill rod 3. Wherein the outer tube 14 has an outer diameter smaller than the drill rod 3, which are connected by a joint 30. The drill rod 3 is in transmission connection with the drilling machine 7 arranged on the ground, the lifting of the drill rod 3 can be controlled through the drilling machine 7, and the drill machine 7 does little work and has extremely low power consumption when the drill rod 3 is pressed down due to the dead weights of the drill rod 3 and the core tube 1. The top of the drill rod 3 is connected with a water pipe 8 for injecting water into the core pipe through a water pump, and meanwhile, the water pipe 8 is provided with a water pressure gauge 91 for measuring water pressure and a flowmeter 92 for measuring flow, and a tee joint for pressure relief and backwater.
In this embodiment, as shown in fig. 4, the limiting member 12 is located below the top cover 23 before the capsule 2 is filled with water, and the water filling port 11 is located above the isolating ring 51; when the water-filling cavity 21 of the capsule 2 is gradually filled with water, as shown in fig. 5, the outer skin 20 is gradually expanded until the water pressure gauge 91 shows that the pressure reaches a preset value, the outer skin 20 of the capsule 2 is expanded and deformed and closely attached to the hole wall, the capsule 2 is fixed in place by the friction force between the capsule 2 and the hole wall, and a section of closed space is formed between the upper capsule 2 and the lower capsule 2; at this time, the control drill rod 3 drives the core tube 1 to press down, the capsule 2 cannot move down together due to the large friction force between the capsule and the hole wall, the core tube 1 starts to slide down relative to the capsule 2, the water pressure can drop instantly as the core tube 1 presses down until the water filling port 11 is communicated with the water pressing cavity 22, the flowmeter 92 can quickly increase the reading, and the waterway is switched to the water pressing mode; as shown in fig. 6, when the spacing member 12 touches the spacer ring 51, the core tube 1 is pushed down to the limit position, the core tube 1 is stopped being pushed down, and water injection in the test section is waited. After the flow and the pressure of the test section are stable, the water seepage coefficient of the test section can be calculated according to the water pressure, the pressed-in flow and the length of the test section in the water pressure mode, and the principle and the calculation method of the test are common sense knowledge in the field and are not repeated herein.
After the water pressure test is finished, stopping the water pump, opening a tee joint of the water pipe 8, flushing water flow of the test section to restore normal water pressure, converting the water pressure mode into a water discharge mode, then controlling the drill rod 3 to ascend together with the core pipe 1, and enabling the capsule 2 to restore to a state before expansion along with water discharge and enabling the outer shell 20 of the capsule; the next test is then performed as needed.
The invention provides a pressurized water test device, which controls the transformation of a water channel in a capsule by pressing down and lifting up a core pipe, so that the switching of actions of filling water in the capsule, pressurizing water in a pressurized water cavity, draining water in the capsule and the like can be simultaneously controlled by a single pipeline, the problem of winding among pipelines caused by the laying of multiple pipelines is avoided, the investment and cost of the device are reduced, and the efficacy is improved; the method realizes the random sectional water pressing test of Quan Kong after the final hole and continuous multi-section test, avoids cross interference with drilling, reduces repeated lifting and tripping, greatly improves the efficacy and reduces the cost; the dead weight of the equipment, the friction force of the hole wall and the change of the relative position between the equipment are utilized to realize low energy consumption and environmental protection; the obstacle removing head can dredge obstacles on the hole wall, common hole accidents such as blocking and burying are avoided, a test device is not required to be lifted up and put down again, the efficacy is improved, and the possible damage or loss of equipment is reduced; the capsule has large expansion and shrinkage rate of the outer skin, large contact area with the hole wall and good sealing effect with the hole wall after expansion.
The foregoing is a further detailed description of the invention in connection with specific embodiments, and it is not intended that the invention be limited to such description. It will be apparent to those skilled in the art that several simple deductions or substitutions can be made without departing from the inventive concept.
Claims (5)
1. A pressurized water testing apparatus, comprising:
the surface of the core tube is sleeved with a capsule, the core tube can slide along the axial direction of the core tube relative to the capsule, and the bottom of the core tube is provided with a plug;
the two ends of the capsule are connected with the surface of the core tube in a sealing way, the side surface of the capsule is provided with a sheath with deformation capability, the inside of the capsule is provided with a water filling cavity for filling water to swell the sheath and a water pressing cavity for filling water to the outside of the capsule, the water pressing cavity is provided with a water outlet communicated with the outside of the capsule, and the water outlet is arranged at the bottom of the capsule;
two capsules are arranged at intervals along the axial direction of the core tube, and a water stop plug for blocking the water outlet is arranged on the lower capsule;
the surface of the core tube is provided with a water injection port for injecting water into the water filling cavity and the water pressing cavity; the core tube moves relative to the capsule and can switch the communication between the water injection port and the water filling cavity or the water pressing cavity;
a sleeve is arranged between the sheath and the core tube, a water filling cavity is arranged between the sleeve and the sheath, and a water through hole communicated with the water filling cavity is arranged on the wall of the sleeve;
the inside of the sleeve is fixedly provided with an isolating ring, the isolating ring is in sealing connection with the core tube and the surface of the sleeve, and a space between the sleeve and the core tube and below the isolating ring forms the water pressing cavity;
the surface of the core tube is provided with a limiting piece for limiting the sliding range of the core tube;
the top and the bottom of the capsule are respectively provided with a top cover and a base which are connected with the surface of the core tube in a sealing way, the outer skin is fixed between the top cover and the base, and the limiting piece is positioned below the top cover above the water injection port; when the limiting piece is close to the top cover, the water injection port is communicated with the water filling cavity, and when the limiting piece is close to the isolating ring, the water injection port is communicated with the water pressing cavity;
the bottom end of the core tube is fixedly connected with a barrier removing head, and the bottom of the barrier removing head is conical.
2. The pressurized-water testing device of claim 1, wherein the sleeve comprises an upper sleeve and a lower sleeve which are mutually butted, the bottom end of the upper sleeve and the top end of the lower sleeve are both in threaded connection with the outer ring of the isolating ring, and the water through hole is formed in the surface of the upper sleeve.
3. The pressurized-water testing device according to claim 1, wherein a channel communicated with the core tube is arranged at the center of the barrier removing head, and the plug is positioned at the center of the bottom of the barrier removing head and is in threaded connection with the inner wall of the channel.
4. The pressurized-water testing device of claim 1, wherein said water stop plug is threadably connected to said water outlet inner wall.
5. The pressurized-water testing device of claim 1, wherein the core tube comprises an inner tube and an outer tube which are spliced with each other, the top end of the inner tube is positioned in the capsule, the water injection port is arranged at the position, close to the top end, of the inner tube, the bottom of the inner tube extends out of the capsule from the bottom of the capsule, and the bottom end of the outer tube extends into the capsule to be in threaded connection with the top end of the inner tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810623414.8A CN108661035B (en) | 2018-06-15 | 2018-06-15 | Pressurized water test equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810623414.8A CN108661035B (en) | 2018-06-15 | 2018-06-15 | Pressurized water test equipment |
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| Publication Number | Publication Date |
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| CN108661035A CN108661035A (en) | 2018-10-16 |
| CN108661035B true CN108661035B (en) | 2024-03-19 |
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| CN201810623414.8A Active CN108661035B (en) | 2018-06-15 | 2018-06-15 | Pressurized water test equipment |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110656926B (en) * | 2019-11-14 | 2024-02-09 | 上海市城市建设设计研究总院（集团）有限公司 | Application method of shallow harmful gas detection device based on drilling equipment |
| CN110984960B (en) * | 2019-11-19 | 2023-07-18 | 四川省冶勘设计集团有限公司 | Top pressure type layered water pumping and injecting test system and method for same-diameter drilling holes |
| CN112196466B (en) * | 2020-09-09 | 2021-06-25 | 中国地质大学（武汉） | Water pressure test device for geological exploration of horizontal directional drilling engineering by utilizing water pressure locking |
| CN113466099B (en) * | 2021-06-17 | 2023-09-19 | 中煤科工集团西安研究院有限公司 | Pressurized water test device and method |
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Address after: 518001 Hong Tao building 12, Baoan South Road, Luohu District, Shenzhen, Guangdong, 12 Applicant after: SHENZHEN WATER PLANNING AND DESIGN INSTITUTE Co.,Ltd. Address before: 518001 Hong Tao building 12, Baoan South Road, Luohu District, Shenzhen, Guangdong, 12 Applicant before: SHENZHEN WATER PLANNING AND DESIGN INSTITUTE CO.,LTD. |
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