Drilling high-pressure air compression test system

Abstract

The invention belongs to the field of engineering geological survey, and particularly relates to a drilling high-pressure air compression test system which comprises an air compression control system which is arranged on the ground in advance and located on one side of a drilling hole. The air pressure gauge is mounted on the air compression control system; the separation experiment assembly is fixed to the lower end of the controller and placed in the drill hole, the separation experiment assembly comprises an air inlet assembly and a plurality of first separation assemblies, the air inlet assembly is fixed to the lower end of the controller, the first separation assemblies wrap the air inlet assembly, and the multiple first separation assemblies are arranged along the air inlet assembly at intervals; according to the invention, the interior of a drill hole can be divided into a plurality of independent test sections through the plurality of separation assemblies, so that high-pressure gas with different pressures can be injected according to different depths of a rock mass, and the accuracy of rock mass airtightness detection is improved.

Description

Technical Field

[0001] The invention belongs to the field of engineering geological survey, and in particular relates to a drilling high-pressure compressed air test system. Background Art

[0002] The main purpose of the borehole high-pressure gas compression test is to verify the sealing and compressive strength of rock and soil or related structures in a high-pressure gas environment to ensure their safety and reliability in practical applications. The test injects high-pressure gas into the borehole, observes and records the response of the rock and soil or structure, such as gas leakage, pressure changes, etc., to evaluate its sealing and compressive performance.

[0003] The existing borehole high-pressure compressed gas test structure is relatively simple. High-pressure gas is directly injected through a pressure pipe to test the air tightness of the rock mass. However, rock masses at different depths have different lithology and physical properties. For example, shallow rock masses may be loose and rich in cracks, while deep rock masses may be denser and have fewer cracks. This lithology change will directly affect the air tightness of the rock mass, thereby affecting the results of the air tightness test. In addition, the existing sealing equipment uses air bags for direct sealing, which makes it easy to slide when the gas pressure is too high, affecting the test results.

[0004] The present invention designs a drilling high-pressure compressed air test system to solve the above problems. Summary of the invention

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A drilling high-pressure compressed air test system, comprising a compressed air control system, which is preset on the ground and located at one side of the borehole; Air pressure gauge, which is installed on the compressed air control system; A controller, the controller is connected to the compressed air control system through a connecting pipe, and the controller is located above the borehole; A separation experiment component is fixed at the lower end of the controller and placed in the drilled hole. The separation experiment component includes an air intake component and a plurality of first separation components. The air intake component is fixed at the lower end of the controller. The first separation component is wrapped around the outside of the air intake component, and the plurality of first separation components are arranged at intervals along the air intake component. The second separation components are symmetrically installed at both ends of the first separation component.

[0006] As a preferred solution, the air intake assembly includes an air pressure pipeline and an adjusting pipeline, both of which are installed at the lower end of the controller, the adjusting pipeline is rotatably connected to the air pressure pipeline, multiple groups of air intake holes are opened on the air pressure pipeline, and multiple groups of adjusting holes are opened on the adjusting pipeline, and sealing columns are slidably installed in the adjusting holes.

[0007] As a preferred solution, the air inlet holes and the adjustment holes are arranged in a spiral arrangement in groups. The air inlet holes and the adjustment holes in the same group are arranged vertically. After the adjustment pipe is rotated a certain angle relative to the air pressure pipe, a group of adjustment holes at the same height can correspond to and be connected with the position of another group of air inlet holes, and the aperture of the adjustment holes is larger than the aperture of the air inlet holes.

[0008] As a preferred solution, a connecting hole and a sealing ring are opened in the sealing column. The sealing ring is located at the bottom of the sealing column. A sealing ring is installed in the sealing ring. The diameter of the sealing ring is larger than the aperture of the air inlet hole.

[0009] As a preferred solution, the first partition component includes an airbag wrapped around the outside of the air pressure pipe, multiple airbags respectively cover the outside of one group of air inlet holes, and the outer wall of the airbag is provided with a first fixing member.

[0010] As a preferred solution, the second partition assembly includes a fixed ring installed on the airbag, a push block is slidably arranged inside the fixed ring, a connecting plate is installed on the end of the push block facing the airbag, a pressure valve is installed on the connecting plate, the pressure valve is respectively connected to the airbag and the interior of the push block, a plurality of second fixing members are slidably arranged on the fixed ring, the heads of the second fixing members extend to the outside of the fixed ring, the bottoms of the second fixing members are in contact with the push block, and a reset spring is arranged between the second fixing members and the inner wall of the fixed ring.

[0011] As a preferred solution, a pushing column is provided at the bottom of the second fixing member, an inclined groove is provided on the outer wall of the pushing block, a guide surface is provided at the bottom of the pushing column and the guide surface is in contact with the inner wall of the inclined groove, a reinforcement head is provided at the head of the second fixing member, and a threaded groove is provided on the outer wall of the reinforcement head.

[0012] Compared with the prior art, the advantages of the present invention are: 1. In the present invention, a plurality of partition components can be used to divide the borehole into a plurality of separate test sections, so that high-pressure gases of different pressures can be injected according to different depths of the rock mass, thereby improving the accuracy of the rock mass air tightness detection, and the first partition component and the second partition component can be used for double fixation, thereby improving the stability of the partition component in the borehole, and at the same time, the borehole can be sealed by the first partition component to complete separate tests of the plurality of test sections in the borehole, and when injecting high-pressure gas, the outlet position of the high-pressure gas can be controlled by adjusting the rotation of the pipeline, thereby respectively injecting high-pressure gases of different pressures into the plurality of test sections. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the present invention.

[0014] Figure 2 Schematic diagram of the separation experimental assembly of the present invention.

[0015] Figure 3Schematic diagram of the air intake assembly of the present invention.

[0016] Figure 4 It is a schematic diagram of the first partition component and the second partition component of the present invention.

[0017] The reference numbers in the figure are: 1. Compressed air control system; 2. Pressure gauge; 3. Connecting pipe; 4. Controller; 5. Separation experiment components; 51. air intake assembly; 511. air pressure pipe; 512. regulating pipe; 513. air intake hole; 514. regulating hole; 515. blocking column; 516. connecting hole; 517. blocking ring; 52, first partition assembly; 521, airbag; 522, first fixing member; 53. Second partition assembly; 531. Fixed ring; 532. Push block; 533. Connecting plate; 534. Pressure valve; 535. Second fixing member; 536. Push column; 537. Return spring; 538. Reinforcement head. DETAILED DESCRIPTION

[0018] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples or drawings are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0019] A drilling high pressure compressed air test system, such as Figures 1 to 4 Shown, including A compressed air control system 1, which is preset on the ground and located at one side of the borehole; A barometer 2, the barometer 2 is installed on the compressed air control system 1; A controller 4, which is connected to the compressed air control system 1 through a connecting pipe 3, and is located above the borehole; The separation experiment component 5 is fixed at the lower end of the controller 4 and placed in the drilled hole. The separation experiment component 5 includes an air intake component 51 and a plurality of first separation components 52. The air intake component 51 is fixed at the lower end of the controller 4. The first separation component 52 is wrapped around the outside of the air intake component 51, and the plurality of first separation components 52 are arranged at intervals along the air intake component 51. The second separation components 53 are symmetrically installed at both ends of the first separation component 52.

[0020] Multiple first partition components 52 divide the internal space of the borehole into multiple independent test sections. High-pressure gases of different pressures are introduced into each test section through a pressure control system, so that tests can be carried out under different pressure environments, thereby improving the accuracy of rock air tightness detection. In addition, the first partition component 52 and the second partition component 53 both have the function of fixing to the rock mass, and the stability of the separation test component 5 in the borehole is improved in a double fixing manner.

[0021] like Figure 2 and Figure 3 As shown, the air intake assembly 51 includes an air pressure pipeline 511 and an adjusting pipeline 512. The air pressure pipeline 511 and the adjusting pipeline 512 are both installed at the lower end of the controller 4. The adjusting pipeline 512 is rotatably connected to the air pressure pipeline 511. A plurality of groups of air intake holes 513 are provided on the air pressure pipeline 511, and a plurality of groups of adjusting holes 514 are provided on the adjusting pipeline 512. A blocking column 515 is slidably installed in the adjusting hole 514.

[0022] The air inlet holes 513 and the regulating holes 514 are arranged in a spiral arrangement in groups. The air inlet holes 513 and the regulating holes 514 in the same group are arranged vertically. After the regulating pipe 512 rotates a certain angle relative to the air pressure pipe 511, a group of regulating holes 514 at the same height can correspond to and be connected with another group of air inlet holes 513, and the aperture of the regulating hole 514 is larger than that of the air inlet hole 513.

[0023] By controlling the rotation angle of the regulating pipe 512, different groups of regulating holes 514 and air inlet holes 513 can be connected, that is, the air inlet component 51 is connected with different first partition components 52, so that high-pressure gas can be introduced into each first partition component 52 respectively, thereby achieving the function of introducing high-pressure gas of different pressures into each test section through the pressure control system.

[0024] A connecting hole 516 and a sealing ring 517 are provided in the sealing column 515 . The sealing ring 517 is located at the bottom of the sealing column 515 . A sealing ring is installed in the sealing ring 517 . The diameter of the sealing ring is larger than the diameter of the air inlet hole 513 .

[0025] If the adjusting hole 514 does not correspond to the connecting hole 516, under the action of high-pressure gas, the sealing column 515 in the adjusting hole 514 will fit the inner wall of the air pressure pipe 511, which can prevent the gas from leaking from the adjusting hole 514 and affecting the air tightness test.

[0026] The first partition component 52 includes an airbag 521 wrapped around the outside of the air pressure pipe 511 , and the multiple airbags 521 respectively cover the outside of one group of air inlet holes 513 , and the outer wall of the airbag 521 is provided with a first fixing member 522 .

[0027] like Figure 4As shown, the second partition component 53 includes a fixed ring 531 installed on the airbag 521, a push block 532 is slidably arranged inside the fixed ring 531, a connecting plate 533 is installed on the end of the push block 532 facing the airbag 521, a pressure valve 534 is installed on the connecting plate 533, the pressure valve 534 is respectively connected to the inside of the airbag 521 and the push block 532, a plurality of second fixing members 535 are slidably arranged on the fixed ring 531, the heads of the second fixing members 535 extend to the outside of the fixed ring 531, the bottoms of the second fixing members 535 are in contact with the push block 532, and a reset spring 537 is arranged between the second fixing member 535 and the inner wall of the fixed ring 531.

[0028] A pushing column 536 is provided at the bottom of the second fixing member 535, an oblique groove is provided on the outer wall of the pushing block 532, a guiding surface is provided at the bottom of the pushing column 536 and the guiding surface contacts the inner wall of the oblique groove, a reinforcing head 538 is provided at the head of the second fixing member 535, and a threaded groove is provided on the outer wall of the reinforcing head 538.

[0029] When the borehole is separated, high-pressure gas is introduced into each airbag 521 in turn. First, the airbag 521 is expanded by gas injection. When the gas pressure in the airbag 521 is greater than the set pressure of the pressure valve 534, the pressure valve 534 opens, allowing the gas to flow to the push block 532, thereby causing the second fixing member 535 to slide and be fixed to the inner wall of the borehole for a second time. The first fixing member 522 and the second fixing member 535 can increase the friction between the entire separation component 5 and the borehole, thereby preventing the separation component 5 from sliding.

[0030] Working principle: The borehole is divided into a plurality of separate test sections by a plurality of first separation components 52, and the adjusting pipe 512 is rotated to each preset angle in turn to inject high-pressure gas of different pressures into each air bag 521. High-pressure gas of different pressures can be injected at different rock and soil depths, thereby forming test sections with different air pressures in the borehole, thereby improving the accuracy of rock air tightness detection, and due to the injection of high-pressure gas, each air bag 521 will expand, and the first fixing member 522 and the second fixing member 535 will abut against the rock surface, thereby improving the stability of the separation test component 5 in the borehole in a double fixing manner.

[0031] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A drilling high pressure compressed air test system, characterized in that: include: A compressed air control system (1), wherein the compressed air control system (1) is pre-installed on the ground, and the compressed air control system (1) is located on one side of the borehole; A barometer (2), the barometer (2) being mounted on the compressed air control system (1); A controller (4), the controller (4) being connected to the compressed air control system (1) via a connecting pipe (3), and the controller (4) being located above the borehole; A separation experiment component (5), the separation experiment component (5) is fixed at the lower end of the controller (4) and placed in the drilled hole, the separation experiment component (5) comprises an air intake component (51) and a plurality of first separation components (52), the air intake component (51) is fixed at the lower end of the controller (4), the first separation components (52) are wrapped around the outside of the air intake component (51), and the plurality of first separation components (52) are arranged at intervals along the air intake component (51), and second separation components (53) are symmetrically installed at both ends of the first separation component (52).

2. A drilling high pressure compressed air test system according to claim 1, characterized in that: The air intake assembly (51) comprises an air pressure pipeline (511) and an adjusting pipeline (512). The air pressure pipeline (511) and the adjusting pipeline (512) are both installed at the lower end of the controller (4). The adjusting pipeline (512) is rotatably connected to the air pressure pipeline (511). The air pressure pipeline (511) is provided with a plurality of groups of air intake holes (513). The adjusting pipeline (512) is provided with a plurality of groups of adjusting holes (514). A blocking column (515) is slidably installed in the adjusting hole (514).

3. A drilling high pressure compressed air test system according to claim 2, characterized in that: The air inlet holes (513) and the regulating holes (514) are arranged in a spiral arrangement in groups, and the air inlet holes (513) and the regulating holes (514) in the same group are arranged vertically. After the regulating pipe (512) rotates a certain angle relative to the air pressure pipe (511), a group of regulating holes (514) at the same height can correspond to and communicate with another group of air inlet holes (513), and the aperture of the regulating holes (514) is larger than the aperture of the air inlet holes (513).

4. A drilling high pressure compressed air test system according to claim 2, characterized in that: The blocking column (515) is provided with a communicating hole (516) and a blocking ring (517). The blocking ring (517) is located at the bottom of the blocking column (515). A sealing ring is installed in the blocking ring (517). The diameter of the sealing ring is larger than the diameter of the air inlet hole (513).

5. The drilling high pressure compressed air test system according to claim 2, characterized in that: The first partition component (52) comprises an air bag (521) wrapped around the outside of the air pressure pipe (511), the plurality of air bags (521) respectively covering the outside of a group of air inlet holes (513), and a first fixing member (522) is provided on the outer wall of the air bag (521).

6. A drilling high pressure compressed air test system according to claim 5, characterized in that: The second partition component (53) comprises a fixing ring (531) mounted on the airbag (521), a pushing block (532) being slidably arranged inside the fixing ring (531), a connecting plate (533) being installed at one end of the pushing block (532) facing the airbag (521), a pressure valve (534) being installed on the connecting plate (533), the pressure valve (534) being connected to the inside of the airbag (521) and the pushing block (532) respectively, a plurality of second fixing members (535) being slidably arranged on the fixing ring (531), the heads of the second fixing members (535) extending to the outside of the fixing ring (531), the bottoms of the second fixing members (535) contacting the pushing block (532), and a return spring (537) being arranged between the second fixing members (535) and the inner wall of the fixing ring (531).

7. A drilling high pressure compressed air test system according to claim 6, characterized in that: A pushing column (536) is provided at the bottom of the second fixing member (535), an oblique groove is provided on the outer wall of the pushing block (532), a guide surface is provided at the bottom of the pushing column (536) and the guide surface is in contact with the inner wall of the oblique groove, and a reinforcing head (538) is provided at the head of the second fixing member (535), and a threaded groove is provided on the outer wall of the reinforcing head (538).

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