Kilometer machine drill-lifting-free water pressing experiment device

Abstract

The utility model discloses a kilometer machine drill-lifting-free water pressing experiment device which comprises an upper connecting handle, a valve body and a piston, the upper connecting handle is connected with the valve body, the valve body is connected with the piston, the inner walls of through holes in the two ends of the upper connecting handle are provided with a reducing screw thread and a first female buckle respectively, and the outer edge of one end of the valve body is provided with a first male buckle. A second female buckle is arranged on the inner wall of the through hole in the other end of the valve body, a water filling channel is further formed in the valve body, and a cavity is formed in the center of the valve body. According to the kilometer machine drill-lifting-free water pressing experiment device, when the pistons are located at the upper position, pressure water is filled into the double plugs through the water filling channel in the valve body, the double plugs are expanded to achieve the water stopping purpose, after the double plugs are expanded, the pistons are pressed down to the lower position, at the moment, water is injected into the floral tube through the cavity and flows into the experiment section for a water pressing experiment, and after the experiment is finished, the pistons are lifted to the middle position; the device is simple and convenient to operate, has high flexibility, is very convenient to use, and can meet experiment requirements, so that the practicability is improved.

Description

Technical Field

[0001] The utility model relates to the field of water pressure tests of kilometer machines, and particularly to a water pressure test device for kilometer machines without drilling. Background Technique

[0002] The water pressure test is an experiment that uses a water pump or the self-weight of a water column to press clear water into the test section of a drill hole, and calculates the relative water permeability of the rock mass and understands the degree of fracture development according to the relationship between the amount of water injected within a certain time and the magnitude of the applied pressure. The traditional water pressure test device for kilometer machines has cumbersome operations, is extremely inconvenient to use, and is difficult to meet the experimental requirements.

[0003] To solve the above problems, we propose a water pressure test device for kilometer machines without drilling, which is improved in view of the deficiencies of the prior art. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a water pressure test device for kilometer machines without drilling. To solve the above technical problems, the utility model provides the following technical solutions:

[0005] A water pressure test device for kilometer machines without drilling of the utility model includes an upper sub, a valve body and a piston. The upper sub is connected with the valve body, and the valve body is connected with the piston. Variable diameter screw threads and female thread one are respectively arranged on the inner walls of the through holes at both ends of the upper sub. A male thread one is arranged on the outer edge of one end of the valve body, and a female thread two is arranged on the inner wall of the through hole at the other end of the valve body. A water filling channel is also arranged on the valve body. A cavity is opened at the center of the valve body. A plurality of perforations are opened at one end of the piston, and a male thread two is arranged on the outer edge of the other end of the piston.

[0006] Preferably, the male thread one of the valve body is connected with the female thread one of the upper sub, and the male thread two of the piston is connected with the female thread two of the valve body.

[0007] Preferably, a plurality of O-rings are arranged inside the valve body and on the inner side of the male thread one.

[0008] Preferably, the inner end of the water filling channel is communicated with the cavity.

[0009] Preferably, the piston extends into the cavity.

[0010] Compared with the prior art, the beneficial effects achieved by the utility model are as follows:

[0011] When the piston is in the upper position, water fills the pressure water into the double pistons through the water filling channel in the valve body, causing the double pistons to expand to achieve the purpose of water stoppage. After the double pistons expand, the piston is pressed down to the lower position. At this time, water is injected into the slotted casing from the cavity and flows into the test section for a water pressure test. After the test is completed, the piston is lifted to the middle position to release the pressure and recycle the piston. The water pressure test device for a kilometer machine without drill pipe extraction using this structural design is simple and convenient to operate, has strong flexibility, is extremely convenient to use, can meet the experimental requirements, and thus improves the practicality. Brief Description of the Drawings

[0012] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0013] Figure 1 is the schematic structural diagram of the whole of the present invention;

[0014] Figure 2 is the schematic structural diagram of the water flow direction during the experiment of the present invention;

[0015] Figure 3 is the schematic structural diagram of the upper joint of the present invention;

[0016] Figure 4 is the schematic structural diagram of the valve body of the present invention;

[0017] Figure 5 is the schematic structural diagram of the piston of the present invention.

[0018] In the figure: 1. Upper joint; 2. Valve body; 3. Piston; 4. Reducing thread; 5. Female thread one; 6. Male thread one; 7. Female thread two; 8. Water filling channel; 9. Cavity; 10. O-ring; 11. Eyelet; 12. Male thread two. Detailed Description of the Preferred Embodiments

[0019] The following describes the preferred embodiments of the present invention with reference to the drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention. Embodiment

[0020] As Figures 1-5As shown in the figure, a water pressure experiment device for a kilometer machine without pulling out the drill rod includes an upper joint 1, a valve body 2, and a piston 3. The upper joint 1 is connected to the valve body 2, and the valve body 2 is connected to the piston 3. Reducing threads 4 and female thread one 5 are respectively arranged on the inner walls of the through holes at both ends of the upper joint 1. A male thread one 6 is arranged on the outer edge of one end of the valve body 2, and a female thread two 7 is arranged on the inner wall of the through hole at the other end of the valve body 2. A water filling channel 8 is also arranged on the valve body 2. A cavity 9 is opened at the center of the valve body 2. Multiple eyelets 11 are opened at one end of the piston 3, and a male thread two 12 is arranged on the outer edge of the other end of the piston 3. The male thread one 6 of the valve body 2 is connected to the female thread one 5 of the upper joint 1, and the male thread two 12 of the piston 3 is connected to the female thread two 7 of the valve body 2. Multiple O-rings 10 are arranged inside the valve body 2 and on the inner side of the male thread one 6. The inner end of the water filling channel 8 is communicated with the cavity 9. The piston 3 extends into the cavity 9. The reducing threads 4 are used to connect the drill pipe. The water filling channel 8 is used for external water injection, and the water enters the piston 3 through it. The O-rings 10 are used to block the water path. The cavity 9 is used to place the piston 3. Water is injected into the experimental section through the eyelets 11, forming the overall structure of the water pressure experiment device for the kilometer machine without pulling out the drill rod. The operation is simple and straightforward, with strong flexibility, extremely convenient to use, and can meet the experimental requirements.

[0021] Principle and advantages of the present utility model: Double-piston expansion water filling for water pressure experiment: When the piston 3 is in the upper position, water is filled into the double pistons through the water filling channel 8 in the valve body 2 to make the double pistons expand to achieve the purpose of water stoppage; Water pressure experiment: After the double pistons expand, the piston 3 is pressed down to the lower position. At this time, water is injected from the cavity 9 into the screen pipe and flows into the experimental section for the water pressure experiment; Double-piston recovery: After the experiment is completed, the piston 3 is lifted to the middle position to relieve the pressure of the piston 3 and recover it. The water pressure experiment device for the kilometer machine without pulling out the drill rod designed with this kind of structure has simple and straightforward operation, strong flexibility, extremely convenient to use, can meet the experimental requirements, and thus improves the practicability.

[0022] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A water pressure test device for a kilometer-high drilling machine without drilling, comprising an upper handle (1), a valve body (2) and a piston (3), wherein the upper handle (1) is connected to the valve body (2), and the valve body (2) is connected to the piston (3), characterized in that: A reducing thread (4) and a female buckle (5) are respectively arranged on the inner walls of the through holes at both ends of the upper connector (1); a male buckle (6) is arranged on the outer edge of one end of the valve body (2); and a female buckle (7) is arranged on the inner wall of the through hole at the other end of the valve body (2); a water filling channel (8) is also arranged on the valve body (2); a cavity (9) is arranged at the center of the valve body (2); a plurality of eyelets (11) are arranged on one end of the piston (3); and a male buckle (12) is arranged on the outer edge of the other end of the piston (3).

2. The water pressure test device for a kilometer-high machine without drilling as claimed in claim 1, characterized in that: The first male buckle (6) of the valve body (2) is connected to the first female buckle (5) of the upper handle (1), and the second male buckle (12) of the piston (3) is connected to the second female buckle (7) of the valve body (2).

3. The water pressure test device for a kilometer-high machine without drilling as claimed in claim 2, characterized in that: A plurality of O-rings (10) are arranged inside the valve body (2) and on the inner side of the male buckle 1 (6).

4. The water pressure test device for a kilometer-high machine without drilling as claimed in claim 1, characterized in that: The inner end of the water filling channel (8) is in communication with the cavity (9).

5. The water pressure test device for a kilometer-high machine without drilling as claimed in claim 1, characterized in that: The piston (3) extends into the cavity (9).

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