CN213175615U

CN213175615U - Engineering geology reconnaissance water-pressure test device

Info

Publication number: CN213175615U
Application number: CN202021991544.6U
Authority: CN
Inventors: 张伯南; 刘飞
Original assignee: Hebei Research Institute of Investigation and Design of Water Conservancy and Hydropower
Current assignee: Hebei Institute of Investigation and Design of Water Conservancy and Hydropower Group Co Ltd
Priority date: 2020-09-11
Filing date: 2020-09-11
Publication date: 2021-05-11
Anticipated expiration: 2030-09-11

Abstract

The utility model discloses a water pressure test device for engineering geological exploration, which belongs to the technical field of engineering geological exploration, and comprises a water tank, wherein the water tank is communicated with a pressure tank through a first three-way pipe, the inner wall of the pressure tank is provided with a plunger which moves up and down, a screw rod is connected to the central shaft of the plunger through threads, the pressure tank is communicated with an injection assembly through a second three-way pipe, and the first port of the second three-way pipe is connected with the upper part of the side wall of the pressure tank through a third check valve; the second port of the second three-way pipe is connected with the lower part of the side wall of the pressure tank through a fourth check valve; the third port of the second tee communicates with the injection assembly. The utility model has the advantages that: the plunger completes suction and injection simultaneously during reciprocating motion, and water injection operation is performed during reciprocating motion, so that the continuity of water injection is ensured, and the accuracy of test data is improved; the position of the outer sleeve is changed to use different numbers of water outlets, the number of the water outlets is changed as required, and different requirements are met.

Description

Engineering geology reconnaissance water-pressure test device

Technical Field

The utility model belongs to the technical field of engineering geology reconnaissance, specifically be an engineering geology reconnaissance water-pressure test device.

Background

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 water permeability of a rock mass fracture according to the water absorption capacity of the rock mass. And (3) pressing clear water into the drilling test section, and calculating the relative water permeability of the rock mass and a test for knowing the development degree of the crack according to the relation between the pressed water amount and the applied pressure within a certain time.

At present, in some areas with power shortage in the field, a manual mode is needed for water pressure injection, and most of the existing manual injection modes utilize a piston to extrude a water source to enable the water source to be injected into the underground.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an engineering geology reconnaissance water-pressure test device can carry out the interpolation at the in-process at the pressure injection water source to carry out the continuous injection that will pour into at the water source, improve experimental data's accuracy.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an engineering geology reconnaissance water-pressure test device, includes the water tank, the water tank specifically is through first three-way pipe and overhead tank intercommunication: the first port of the first three-way pipe is communicated with the water tank; the second port of the first three-way pipe is connected with the upper part of the side wall of the pressure tank through a first check valve; the third port of the first three-way pipe is connected with the lower part of the side wall of the pressure tank through a second check valve; the inner wall of overhead tank is provided with the plunger of up-and-down motion, threaded connection has the lead screw on the center pin of plunger, the overhead tank specifically is through second three-way pipe and injection subassembly intercommunication: the first port of the second three-way pipe is connected with the upper part of the side wall of the pressure tank through a third check valve; the second port of the second three-way pipe is connected with the lower part of the side wall of the pressure tank through a fourth check valve; the third port of the second tee communicates with an injection assembly.

Preferably, the injection assembly comprises an inner injection pipe, an outer sleeve is sleeved on the outer side of the inner injection pipe in a sliding manner, and a plurality of water injection holes are formed in the outer sleeve.

Preferably, the outer sleeve is provided with a strip-shaped positioning hole, a fastening bolt penetrates through the strip-shaped positioning hole, and one end of the fastening bolt is screwed into the inner side of the inner injection pipe.

Preferably, the liquid outlet direction of the first check valve flows to the pressure tank, and the liquid outlet direction of the second check valve flows to the pressure tank.

Preferably, the outlet direction of the third check valve flows to the injection assembly, and the outlet direction of the fourth check valve flows to the injection assembly.

Preferably, the two ends of the screw rod are fixedly provided with limiting blocks, and the surfaces of the limiting blocks are attached to the inner wall of the pressure tank in a sliding mode.

Preferably, one end of the screw rod extends to the outside of the pressure tank, a sealing block is fixedly mounted on the pressure tank, and the screw rod is attached to the inner side of the sealing block in a rotating mode.

Compared with the prior art, the beneficial effects of the utility model are that: this engineering geology reconnaissance water-pressure test device: the screw rod is rotated, the plunger is driven to move up and down according to the continuous positive and negative rotation of the screw rod, the plunger can complete suction and injection simultaneously in the reciprocating motion stroke, water injection operation is carried out in the reciprocating motion process, the continuity of water injection is ensured, and the accuracy of test data is improved; through the position that changes the outer tube to change the apopore quantity that exposes, and then can adjust the coverage of play water, change the quantity of apopore as required, satisfy different demands.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of the injection assembly of the present invention;

fig. 3 is a schematic structural diagram of the pressure tank and its components of the present invention.

In the figure: 10. a water tank; 11. a pressure tank; 12. a first three-way pipe; 13. a first check valve; 15. a second check valve; 16. a plunger; 17. a screw rod; 18. a second three-way pipe; 19. a third check valve; 20. a fourth check valve; 21. an injection assembly; 22. an inner injection pipe; 23. an outer sleeve; 24. a water injection hole; 25. strip-shaped positioning holes; 26. fastening a bolt; 27. a sealing block; 28. and a limiting block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a water pressure test device for engineering geological exploration comprises a water tank 10, a first three-way pipe 12 is fixedly installed on the water tank 10, a first check valve 13 is arranged at one end of the first three-way pipe 12, a second check valve 15 is arranged at the other end of the first three-way pipe 12, the water tank 10 is connected with a pressure tank 11 through the first three-way pipe 12, the liquid outlet direction of the first check valve 13 flows to the pressure tank 11, the liquid outlet direction of the second check valve 15 flows to the pressure tank 11, two ports of the first three-way pipe 12 are respectively connected to the upper end and the lower end of the pressure tank 11, water flow in the water tank 10 can flow into the pressure tank 11 through the first check valve 13 and the second check valve 15 due to the limitation of the first check valve 13 and the second check valve 15, the water flow in the pressure tank 11 cannot flow to the pressure tank 12, a plunger 16 is arranged on the inner wall of the pressure tank 11 in a sliding connection mode, and the, when the plunger 16 moves downwards, the water source below the plunger 16 is squeezed, so that the water pressure below the plunger 16 is increased, the pressure above the plunger 16 is reduced, the water source in the water tank 10 is sucked, the inner side of the plunger 16 is in threaded connection with the screw rod 17, the reciprocating displacement of the plunger 16 can be controlled by the difference of the rotation directions of the screw rod 17, the pressure tank 11 is connected with the second three-way pipe 18, two ports of the second three-way pipe 18 are respectively connected with the upper end and the lower end of the pressure tank 11, one end of the second three-way pipe 18 is provided with the third check valve 19, the other end of the second three-way pipe 18 is provided with the fourth check valve 20, the liquid outlet direction of the third check valve 19 flows to the injection assembly 21, the liquid outlet direction of the fourth check valve 20 flows to the injection assembly 21, due to the limiting effects of the third check valve 19 and the fourth check valve 20, the water flow only can flow from the pressure tank 11 to the, eventually, the water flow will flow into the injection assembly 21.

Please refer to fig. 1 and 2, the injection assembly 21 includes an inner injection pipe 22, an outer sleeve 23 is slidably sleeved outside the inner injection pipe 22, a plurality of water injection holes 24 are formed in the outer sleeve 23, the outer sleeve 23 is inserted underground, water flows flow out through the water injection holes 24, the height of the inner injection pipe 22 can be adjusted, the inner injection pipe 22 blocks the water injection holes 24, the inner injection pipe 22 moves upwards to enable the water injection holes 24 to be not blocked, the starting number of the water injection holes 24 can be increased, a bar-shaped positioning hole 25 is formed in the outer sleeve 23, a fastening bolt 26 is communicated in the bar-shaped positioning hole 25, one end of the fastening bolt 26 is screwed into the inner injection pipe 22, the outer sleeve 23 can be extruded by screwing the fastening bolt 26, the outer sleeve 23 and the inner injection pipe 22 are relatively fixed, and the number of the water injection holes 24 which can be started is selected according to requirements.

Please refer to fig. 1 and fig. 3, two ends of the lead screw 17 are fixedly installed with a limiting block 28, the surface of the limiting block 28 is slidably attached to the inner wall of the pressure tank 11, the setting of the limiting block 28 ensures that the lead screw 17 can only rotate, one end of the lead screw 17 extends to the outside of the pressure tank 11, a sealing block 27 is fixedly installed on the pressure tank 11, the lead screw 17 rotates and is attached to the inner side of the sealing block 27, the sealing block 27 is tightly attached to the upper end of the lead screw 17, the lead screw 17 is sealed, and the leakage of a water source is reduced.

The utility model discloses a theory of operation: when the water source injection device is used, the outer sleeve 23 needs to be inserted underground, the screw rod 17 is rotated, reciprocating displacement of the plunger 16 can be controlled by different rotation directions of the screw rod 17, when the plunger 16 moves downwards, a water source below the plunger 16 can be extruded, water pressure below the plunger 16 is increased, pressure intensity above the plunger 16 is reduced, the water source in the water tank 10 can be sucked above the plunger 16, the water source below the plunger 16 can flow towards the second three-way pipe 18 due to pressure increase, water flow conveyed through the second three-way pipe 18 enters the injection assembly 21 to be pressurized, when the plunger 16 moves upwards, the water pressure above the plunger 16 is increased, water source suction is carried out below the plunger 16, and water source injection is carried out ceaselessly.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an engineering geology reconnaissance water-pressure test device, includes water tank (10), its characterized in that: the water tank (10) is communicated with the pressure tank (11) through a first three-way pipe (12), and the water tank specifically comprises: a first port of the first three-way pipe (12) is communicated with the water tank (10); the second port of the first three-way pipe (12) is connected with the upper part of the side wall of the pressure tank (11) through a first check valve (13); the third port of the first three-way pipe (12) is connected with the lower part of the side wall of the pressure tank (11) through a second check valve (15); the inner wall of overhead tank (11) is provided with up-and-down motion's plunger (16), threaded connection has lead screw (17) on the center pin of plunger (16), overhead tank (11) are through second three-way pipe (18) and injection subassembly (21) intercommunication, specifically do: the first port of the second three-way pipe (18) is connected with the upper part of the side wall of the pressure tank (11) through a third check valve (19); the second port of the second three-way pipe (18) is connected with the lower part of the side wall of the pressure tank (11) through a fourth check valve (20); the third port of the second tee (18) communicates with an injection assembly (21).

2. The engineering geological survey water pressure test device of claim 1, characterized in that: the injection assembly (21) comprises an inner injection pipe (22), an outer sleeve (23) is sleeved on the outer side of the inner injection pipe (22) in a sliding mode, and a plurality of water injection holes (24) are formed in the outer sleeve (23).

3. The engineering geological survey water pressure test device of claim 2, characterized in that: the outer sleeve (23) is provided with a strip-shaped positioning hole (25), a fastening bolt (26) penetrates through the strip-shaped positioning hole (25), and one end of the fastening bolt (26) is screwed into the inner side of the inner injection pipe (22).

4. The engineering geological survey water pressure test device of claim 1, characterized in that: the liquid outlet direction of the first check valve (13) flows to the pressure tank (11), and the liquid outlet direction of the second check valve (15) flows to the pressure tank (11).

5. The engineering geological survey water pressure test device of claim 1, characterized in that: the outlet direction of the third check valve (19) flows to the injection assembly (21), and the outlet direction of the fourth check valve (20) flows to the injection assembly (21).

6. The engineering geological survey water pressure test device of claim 1, characterized in that: the both ends fixed mounting of lead screw (17) has stopper (28), the surperficial slip laminating of stopper (28) is in the inner wall department of overhead tank (11).

7. The engineering geological survey water pressure test device of claim 1, characterized in that: the one end of lead screw (17) extends to the outside of overhead tank (11), fixed mounting has sealed piece (27) on overhead tank (11), the rotation laminating of lead screw (17) is in the inboard of sealed piece (27).