CN219102118U

CN219102118U - Pressurized water test water stop valve for drilling

Info

Publication number: CN219102118U
Application number: CN202222923248.8U
Authority: CN
Inventors: 谢中民
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-11-03
Filing date: 2022-11-03
Publication date: 2023-05-30
Anticipated expiration: 2032-11-03

Abstract

The utility model discloses a water stop valve for a water pressure test for a drill hole, which is characterized in that a water body non-return structure consisting of a first fixing frame, a second fixing rod, a sliding rod, a spring and a water stop plate is arranged, when the water pump stops supplying water, the water stop plate and one surface of the spring are opposite to each other under the action of the restoring force of the spring and the water pressure on the other side of the water stop plate, the water stop plate drives the sliding rod to move in the direction opposite to the water inlet direction until the water stop plate blocks a water outlet channel, so that the water pump can be effectively prevented from being damaged due to impact caused by the high-pressure water flowing back to the water pump at the moment when the water pump is closed.

Description

Pressurized water test water stop valve for drilling

Technical Field

The utility model relates to the technical field of drilling, in particular to a water stop valve for a pressurized water test for drilling.

Background

The water pressure test is a penetration test performed in a drilled hole, and is an in-situ test in which a plug isolates the drilled hole into a hole section with a certain length, then presses water to the hole section with a certain pressure, the pressing flow under the corresponding pressure is measured, the water permeability of the hole Duan Yandan is represented by the pressing flow value of the unit test section length under a certain force, the water pressure test is a common method for evaluating the permeability of a rock mass, and the water pressure test is an in-situ test in which water is pressed into the drilled hole in a high-pressure mode, and the development condition and the water permeability of a rock mass crack are known according to the calculation of the water absorption of the rock mass.

During the test, the water stop valve is required to be installed on the water pipe of the water pump and the water outlet end, so that when the water pump is prevented from suddenly stopping running, high-pressure water connected with the water pump outlet reversely flows back to the water pump to cause impact damage to the water pump, however, most of the existing water stop valves can only have a single-layer water stop structure, when granular impurities such as sand and stone are contained in water in the use process, sand and stone particles can be possibly mixed at the contact part of the water stop valve and the inner cavity of the valve body, at the moment, the water leakage phenomenon can occur, the water pressure in a drilled hole is gradually reduced, the test requirement cannot be met, the test result is inaccurate, and the water stop valve with stronger sealing performance for the water pressure test is required to be designed.

Disclosure of Invention

The utility model aims to provide a water stop valve for a pressurized water test for drilling, which aims to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a drilling is with water pressure test water stop valve, includes valve body, valve gap, case and water blocking board, the inside of valve body is provided with inlet channel and outlet channel, be provided with the connecting hole between inlet channel and the outlet channel, the valve gap is installed on the upper portion of valve body, the screw hole has been seted up in the middle of the valve gap, threaded hole installs the valve rod, regulating handle is installed at the valve rod top, the case upper cover is installed to the valve rod bottom, the case is installed to case upper cover bottom, install first mount and second mount in the outlet channel, set up the movable chamber between first mount and the second mount, the slide bar is installed in the middle of first mount and the second mount in the run-through, the cover is equipped with the spring on the slide bar, the one end and the second mount fixed connection of spring, the water blocking board is installed to the other end of spring.

As a further scheme of the utility model: the valve core comprises a stainless steel layer and a rubber layer, the rubber layer is wrapped on the outer side wall of the stainless steel layer, and the connecting hole is matched with the valve core in size.

As still further aspects of the utility model: the periphery of the connecting hole is provided with an O-shaped sealing ring, and the bottom surface of the valve core upper cover is provided with a clamping groove which is matched with the O-shaped sealing ring in size.

As still further aspects of the utility model: and rod holes matched with the sliding rod in size are formed in the middle of the first fixing frame and the second fixing frame.

As still further aspects of the utility model: the diameter of the water blocking plate is larger than that of the water blocking channel at the position where the water blocking plate is located and smaller than that of the movable cavity at the position where the water blocking plate is located.

As still further aspects of the utility model: and a water inlet flange and a water outlet flange are respectively arranged at two ends of the valve body.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the water body non-return structure formed by the first fixing frame, the second fixing rod, the sliding rod, the spring and the water blocking plate, when the water pump stops supplying water, the water blocking plate and one surface of the spring are subjected to water pressure, at the moment, under the action of the restoring force of the spring and the water pressure on the other side of the water blocking plate, the water blocking plate drives the sliding rod to move in the direction opposite to the water inlet direction until the water blocking plate blocks the water outlet channel, and therefore the situation that the water pump is closed instantly, and high-pressure water reversely flows back to the water pump to cause the water pump to be impacted and damaged can be effectively avoided.

2. According to the utility model, the O-shaped sealing ring and the valve core with the rubber layer are arranged, so that two sealing structures are formed between the valve core and the valve body, the water stopping effect of the valve core can be greatly improved, the water stopping performance of the water stopping valve is improved, and the water pressure in a drill hole is prevented from failing to meet the test requirement due to water flow leakage.

Drawings

FIG. 1 is a schematic view showing the internal structure of a water stop valve for a pressurized water test for drilling.

Fig. 2 is a schematic perspective view of a water stop valve for a pressurized water test for drilling.

Fig. 3 is an enlarged view of the structure of the water stop valve for drilling water pressure test at a in fig. 1.

Fig. 4 is an enlarged view of the structure of the water stop valve for drilling at B in fig. 1.

Fig. 5 is a front view of the second holder of fig. 4 for a pressurized water test water stop valve for drilling.

1. A valve body; 2. a water inlet channel; 3. a water outlet channel; 4. a valve cover; 5. a threaded hole; 6. a valve stem; 7. an adjusting hand wheel; 8. a valve core upper cover; 9. a valve core; 901. a stainless steel layer; 902. a rubber layer; 10. a connection hole; 11. an O-shaped sealing ring; 12. a clamping groove; 13. a first fixing frame; 14. the second fixing frame; 15. a movable cavity; 16. a slide bar; 17. a spring; 18. a water blocking plate; 19. a water inlet flange; 20. and a water outlet flange.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-5, in the embodiment of the utility model, a pressurized water test water stop valve for drilling comprises a valve body 1, a valve cover 4, a valve core 9 and a water blocking plate 18, wherein a water inlet channel 2 and a water outlet channel 3 are arranged in the valve body 1, a connecting hole 10 is arranged between the water inlet channel 2 and the water outlet channel 3, the valve cover 4 is arranged at the upper part of the valve body 1, a threaded hole 5 is arranged in the middle of the valve cover 4, a valve rod 6 is arranged in the threaded hole 5, an adjusting hand wheel 7 is arranged at the top of the valve rod 6, a valve core upper cover 8 is arranged at the bottom of the valve rod 6, a valve core 9 is arranged at the bottom of the valve core upper cover 8, a first fixing frame 13 and a second fixing frame 14 are arranged in the water outlet channel 3, a movable cavity 15 is arranged between the first fixing frame 13 and the second fixing frame 14, a slide bar 16 is arranged in a penetrating manner in the middle of the first fixing frame 13 and the second fixing frame 14, a spring 17 is sleeved on the slide bar 16, one end of the spring 17 is fixedly connected with the second fixing frame 14, and the water blocking plate 18 is arranged at the other end of the spring 17.

The valve core 9 comprises a stainless steel layer 901 and a rubber layer 902, the rubber layer 902 is wrapped on the outer side wall of the stainless steel layer 901, the connecting hole 10 is matched with the valve core 9 in size, the rubber layer 902 enables the valve core 9 to have certain elasticity, the connecting hole 10 can be sealed better, and meanwhile the valve core 9 also has the function of adjusting the flow rate of water flow.

An O-shaped sealing ring 11 is arranged on the periphery of the connecting hole 10, a clamping groove 12 matched with the O-shaped sealing ring 11 in size is formed in the bottom surface of the valve core upper cover 8, and the clamping groove 12 and the O-shaped sealing ring 11 are matched to play a sealing role.

The rod holes matched with the sliding rod 16 in size are formed in the middle of the first fixing frame 13 and the second fixing frame 14, and the spring 17 can be prevented from being deformed in the expansion process to affect the use by design.

The diameter of the water blocking plate 18 is larger than that of the water blocking channel at the position of the water blocking plate and smaller than that of the movable cavity 15 at the position of the water blocking plate, so that water can flow out through the movable cavity 15 by bypassing the water blocking plate 18 conveniently.

The water inlet flange 19 and the water outlet flange 20 are respectively arranged at two ends of the valve body 1, and the water stop valve can be conveniently arranged in the water pipe by arranging the flanges.

The working principle of the utility model is as follows:

when the water pump is used, after the water body is pumped into the valve body 1, the water body flows into the drilled holes sequentially through the water inlet channel 2, the connecting hole 10 and the water outlet channel 3, when water flows through the water outlet channel 3, the water blocking plate 18 is pushed towards one side where the spring 17 is installed, then the water flows out of the water outlet channel 3 through the movable cavity 15 around the water blocking plate 18, at the moment, the spring 17 is in a compressed state, when the water pump stops working, the pressure in the pump disappears, the water blocking plate 18 is subjected to pressure reduction or even disappearance from the water inlet direction, high-pressure water in the drilled holes is caused to flow back, when the high-pressure water flows back to the water blocking plate 18, the water blocking plate 18 can be driven to move towards the direction opposite to the water inlet direction under the action of the restoring force of the spring 17 and the water pressure on the other side of the water blocking plate 18, the water blocking plate 18 is rapidly pressed against the junction of the water outlet channel 3 and the movable cavity 15, at the moment, the water blocking plate 18 just blocks the water outlet channel 3, then a person rotates the valve core 9 through the adjusting valve core 7 to enable the connecting hole 10 to be blocked, a second channel structure is formed, and thus the water blocking plate 18 can not flow well, the water pump can be prevented from flowing in the water pump, and the safety test can be further guaranteed.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. The utility model provides a water-pressing test water stop valve for drilling, includes valve body (1), valve gap (4), case (9) and water-blocking board (18), its characterized in that: the inside of valve body (1) is provided with inlet channel (2) and play water channel (3), be provided with connecting hole (10) between inlet channel (2) and the play water channel (3), valve gap (4) are installed on the upper portion of valve body (1), screw hole (5) have been seted up in the middle of valve gap (4), install valve rod (6) in screw hole (5), regulating handle (7) are installed at valve rod (6) top, case upper cover (8) are installed to valve rod (6) bottom, case (9) are installed to case upper cover (8) bottom, install first mount (13) and second mount (14) in the play water channel (3), set up movable chamber (15) between first mount (13) and second mount (14), run through in the middle of first mount (13) and second mount (14) and install slide bar (16), the cover is equipped with spring (17) on slide bar (16), one end and second mount (14) fixed connection of spring (17), spring (17) are blocked water board (18) are installed to the other end.

2. The pressurized water test water stop valve for drilling of claim 1, wherein: the valve core (9) comprises a stainless steel layer (901) and a rubber layer (902), the rubber layer (902) is wrapped on the outer side wall of the stainless steel layer (901), and the connecting hole (10) is matched with the valve core (9) in size.

3. The pressurized water test water stop valve for drilling of claim 1, wherein: an O-shaped sealing ring (11) is arranged at the periphery of the connecting hole (10), and a clamping groove (12) which is matched with the O-shaped sealing ring (11) in size is formed in the bottom surface of the valve core upper cover (8).

4. The pressurized water test water stop valve for drilling of claim 1, wherein: and rod holes matched with the sliding rods (16) in size are formed in the middle of the first fixing frame (13) and the second fixing frame (14).

5. The pressurized water test water stop valve for drilling of claim 1, wherein: the diameter of the water blocking plate (18) is larger than that of the water blocking channel at the position of the water blocking plate and smaller than that of the movable cavity (15) at the position of the water blocking plate.

6. The pressurized water test water stop valve for drilling of claim 1, wherein: the two ends of the valve body (1) are respectively provided with a water inlet flange (19) and a water outlet flange (20).