Hydraulic spray gun for hydraulic jet fracturing

Abstract

The hydraulic spray gun comprises a gun barrel, the upper end and the lower end of the gun barrel are each concentrically provided with a threaded groove, an upper cover plate and a lower cover plate are in threaded connection with the interiors of the two threaded grooves respectively, and the inner side of the upper cover plate and the inner side of the lower cover plate abut against a sealing cylinder respectively. The two sealing cylinders are axially and telescopically connected into the gun barrel, two water spraying holes are formed in the gun barrel in the radial direction, the two water spraying holes are axially symmetrical up and down, and a water supply piece communicated with the gun barrel is arranged on the top face of the upper cover plate. The two sealing barrels are movably connected with the gun barrel through the springs, the sliding grooves and the sliding blocks, when the gun barrel is used, water flow pushes the two sealing barrels to move reversely, the two water spraying holes are opened, the spring is compressed, and when the gun barrel is not used, the water flow disappears, thrust borne by the sealing barrels disappears, and the spring resets. And the sealing cylinder seals the water spraying holes, so that when the gun barrel is not used, broken stone particles are prevented from entering the water spraying holes, and the water spraying holes are prevented from being blocked.

Description

TECHNICAL FIELD

[0001] The utility model relates to water jet gun technical field especially relates to a kind of water jet gun for water jet fracturing. BACKGROUND

[0002] Patent publication No. CN210660056U discloses a water jet gun for water jet fracturing, comprising a gun body, a lower joint, an upper joint, a sleeve, a jet hole, a fixing sleeve and a nozzle. The bottom of the gun body is fixed with the lower joint. The end of the gun body away from the lower joint is fixed with the upper joint. The inner wall of the gun body is sleeved with the sleeve. The gun body is sequentially provided with a first clamping groove and a second clamping groove. The inner walls of the first clamping groove and the second clamping groove are both provided with jet holes. The inner walls of the first clamping groove and the second clamping groove are both clamped with the fixing sleeve. The inner wall of the jet hole is fixed with the nozzle, and the nozzle is fixedly connected with the inner wall of the fixing sleeve. The outer side of one end of the sleeve is provided with an annular groove. The end of the gun body close to the annular groove is provided with a threaded hole. The inner wall of the threaded hole is threadedly connected with a shear pin, and the shear pin is clamped with the inner wall of the annular groove. The water jet gun for water jet fracturing can prevent the collapse between the two jet holes during jetting.

[0003] However, the jet hole in the patent lacks a sealing assembly. After the water gun is used and closed, gravel particles may enter the jet hole, which may easily cause the jet hole to be blocked. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the shortcomings in the prior art and provides a water jet gun for water jet fracturing.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a water jet gun for water jet fracturing, comprising a barrel, a threaded groove is concentrically formed at each of the upper and lower ends of the barrel, an upper cover plate and a lower cover plate are respectively threadedly connected in the two threaded grooves, an inner side of the upper cover plate and an inner side of the lower cover plate are respectively abutted with a sealing cylinder, the two sealing cylinders are axially telescopic connected in the barrel, two mutually perpendicular water jet holes are radially formed in the barrel, the two water jet holes are axially symmetrical, two nozzles communicating with the water jet holes are fixed on the outer side of the barrel, and a water supply device communicating with the barrel is arranged on the top surface of the upper cover plate.

[0006] As a further description of the above technical scheme: the water supply device comprises a three-way valve movably connected to the top surface of the upper cover plate, two outer threaded pipes are respectively horizontally connected to the two side output ends of the three-way valve, an outer edge of each outer threaded pipe is threadedly connected with a sleeve, a water pipe is movably sleeved in the sleeve, the water pipe communicates with the barrel, and the communication position of the water pipe and the barrel is between the two sealing cylinders.

[0007] As the further description of the above technical scheme: the end of the sleeve abuts against a first sealing ring, the first sealing ring is fixedly sleeved on the outside of the outer threaded pipe, the end of the outer threaded pipe abuts against a second sealing ring, and the second sealing ring is fixedly sleeved on the outer edge of the water pipe.

[0008] As the further description of the above technical scheme: the upper cover plate and the lower cover plate are vertically provided with a hexagonal groove on the outside, the bottom surface of the three-way valve is vertically fixed with a hexagonal block, and the hexagonal block is vertically inserted into the hexagonal groove on the upper cover plate.

[0009] As the further description of the above technical scheme: the top surface of the lower cover plate is vertically fixed with a second guide column, the bottom surface of the sealing cylinder is vertically fixed with a first guide column, a spring is sleeved between the first guide column and the second guide column, and the spring abuts between the lower cover plate and the sealing cylinder.

[0010] As the further description of the above technical scheme: the inner wall of the barrel is axially provided with two mirror-symmetrical sliding grooves, the two sliding grooves are communicated with the threaded groove, each sliding groove is slidably connected with a sliding block, the sliding block is fixedly connected with the sealing cylinder, the connection mode of the upper cover plate and the upper end sealing cylinder is same as that of the lower cover plate and the lower end sealing cylinder, and the upper cover plate and the upper end sealing cylinder are vertically mirror-symmetrical with the lower cover plate and the lower end sealing cylinder.

[0011] The utility model has the advantages of the following beneficial effects:

[0012] Compared with the prior art, the hydraulic jet gun for hydraulic jet fracturing has the following advantages: the output end of the water supply part is communicated between the two sealing cylinders, the two sealing cylinders are movably connected with the barrel through the spring and the sliding groove sliding block, the barrel is pushed to move reversely by the water flow during use, the two water spraying holes are opened to spray water, the spring is compressed at the same time, the water flow disappears when the barrel is not used, the pushing force on the sealing cylinder disappears, the spring resets, and the sealing cylinder closes the water spraying hole, so that the gravel particles cannot enter the water spraying hole and cause the water spraying hole to be blocked when the barrel is not used. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The utility model proposes a kind of overall structure perspective view of the hydraulic jet gun for hydraulic jet fracturing;

[0014] Figure 2 The utility model proposes a kind of overall structure main sectional view of the hydraulic jet gun for hydraulic jet fracturing;

[0015] Figure 3 The utility model proposes the connection enlarged view of the sealing cylinder and barrel of a kind of hydraulic jet gun for hydraulic jet fracturing;

[0016] Figure 4 The utility model provides a water jet gun for hydraulic jet fracturing Figure 2 The structure of the utility model is enlarged at A in the figure.

[0017] Legend:

[0018] 1, gun barrel; 2, spray head; 3, water pipe; 4, sleeve; 5, three-way valve; 6, upper cover plate; 7, threaded groove; 8, sealing cylinder; 9, sliding block; 10, sliding groove; 11, spring; 12, lower cover plate; 13, hexagonal groove; 14, water jet hole; 15, first guide column; 16, second guide column; 17, first sealing ring; 18, external threaded pipe; 19, second sealing ring. Specific implementation

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0020] With reference to Figures 1 to 4 The utility model provides a water jet gun for hydraulic jet fracturing: including gun barrel 1, the upper and lower two ends of gun barrel 1 are concentric and are provided with a threaded groove 7, and upper cover plate 6 and lower cover plate 12 are respectively connected in screw thread in two threaded grooves 7, the inner side of upper cover plate 6 and the inner side of lower cover plate 12 are abutted with a sealing cylinder 8 respectively, two sealing cylinders 8 are axially telescopic and are connected in gun barrel 1, two mutually perpendicular water jet holes 14 are radially provided in gun barrel 1, two spray heads 2 that are communicated with water jet hole 14 are fixed on the outside of gun barrel 1, two water jet holes 14 are axially symmetrical, the top surface of upper cover plate 6 is equipped with the water supply part that is communicated with gun barrel 1, the top surface of lower cover plate 12 is fixed with a second guide column 16 perpendicularly, the bottom surface of sealing cylinder 8 is fixed with a first guide column 15 perpendicularly, a spring 11 is jointly sleeved between first guide column 15 and second guide column 16, spring 11 is abutted between lower cover plate 12 and sealing cylinder 8, the inner wall of gun barrel 1 is axially provided with two mirror image symmetrical sliding grooves 10, two sliding grooves 10 are communicated with threaded groove 7, a sliding block 9 is slidably connected in each sliding groove 10, sliding block 9 is fixedly connected with sealing cylinder 8, the connection mode of upper cover plate 6 and upper end sealing cylinder 8 is same with the connection mode of lower cover plate 12 and lower end sealing cylinder 8, and is mirror image symmetrical up and down;

[0021] The water supply part comprises a three-way valve 5 movably connected to the top surface of the upper cover plate 6, two outer threaded pipes 18 horizontally connected to the two side output ends of the three-way valve 5, a sleeve 4 threadedly connected to the outer edge of each outer threaded pipe 18, a water pipe 3 movably sleeved in the sleeve 4, the water pipe 3 being in communication with the barrel 1, the communication position of the water pipe 3 and the barrel 1 being located between the two sealing sleeves 8, a hexagonal groove 13 vertically formed in the outer portion of the upper cover plate 6 and the lower cover plate 12, a hexagonal block vertically fixed to the bottom surface of the three-way valve 5 and vertically inserted into the hexagonal groove 13 of the upper cover plate 6, a first sealing ring 17 abutting against the end of the sleeve 4 and fixedly sleeved to the outer portion of the outer threaded pipe 18, and a second sealing ring 19 abutting against the end of the outer threaded pipe 18 and fixedly sleeved to the outer edge of the water pipe 3.

[0022] The output end of the water supply part is communicated between the two sealing sleeves 8, and the two sealing sleeves 8 are movably connected to the barrel 1 through the spring 11 and the sliding groove 10 and the sliding block 9, so that when the barrel 1 is used, the water flow pushes the two sealing sleeves 8 to move reversely, the two water spraying holes 14 are opened, water spraying is performed, and the spring 11 is compressed. When not in use, the water flow disappears, the pushing force on the sealing sleeves 8 disappears, the spring 11 is reset, and the sealing sleeves 8 close the water spraying holes 14, so that when the barrel 1 is not in use, the gravel particles are prevented from entering the water spraying holes 14 and causing the water spraying holes 14 to be blocked.

[0023] Working principle: when in use, first, the three-way valve 5 is installed on the upper cover plate 6, the hexagonal block at the end of the three-way valve 5 is inserted into the hexagonal groove 13 of the upper cover plate 6, then the outer threaded pipes 18 at the two sides of the three-way valve 5 are connected to the two water pipes 3 through the sleeves, then water enters the barrel 1 through the three-way valve 5 and the water pipes 3, the two sealing sleeves 8 in the barrel 1 reversely move under the action of water pressure, the two water spraying holes 14 are opened, water spraying is performed, and the spring 11 is compressed. When not in use, the water flow disappears, the pushing force on the sealing sleeves 8 disappears, the spring 11 is reset, and the sealing sleeves 8 close the water spraying holes 14, so that when the barrel 1 is not in use, the gravel particles are prevented from entering the water spraying holes 14 and causing the water spraying holes 14 to be blocked.

[0024] When the internal parts of the barrel 1 need to be maintained, the sleeves 4 at the two sides of the three-way valve 5 are separated from the three-way valve 5, then an outer hexagonal wrench is used to remove the upper cover plate 6 and the lower cover plate 12 from the barrel 1 through the hexagonal grooves 13 of the upper cover plate 6 and the lower cover plate 12, and then the spring 11 and the sealing sleeves 8 are sequentially taken out from the barrel 1.

[0025] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A hydraulic jet gun for hydraulic jet fracturing, comprising a gun barrel (1), characterised in that: The upper and lower ends of the barrel (1) are each concentrically provided with a threaded groove (7), and the upper and lower cover plates (6) and (12) are respectively threadedly connected in the two threaded grooves (7).

2. A hydraulic jet gun for hydraulic fracturing according to claim 1, characterized in that: The top surface of the upper cover plate (6) is provided with a water supply member in communication with the barrel (1).

3. A hydraulic jet gun for hydraulic fracturing according to claim 2, characterized in that: The outer edge of each outer threaded pipe (18) is threadedly connected with a sleeve (4), and the water pipe (3) is movably sleeved in the sleeve (4).

4. A hydraulic jet gun for hydraulic jet fracturing according to claim 2, characterized in that: The outer edge of each outer threaded pipe (18) is threadedly connected with a sleeve (4), and the water pipe (3) is movably sleeved in the sleeve (4).

5. A hydraulic jet gun for hydraulic fracturing according to claim 1, characterized in that: The outer edge of each outer threaded pipe (18) is threadedly connected with a sleeve (4), and the water pipe (3) is movably sleeved in the sleeve (4).

6. A hydraulic jet gun for hydraulic fracturing according to claim 5, characterized in that: The outer edge of each outer threaded pipe (18) is threadedly connected with a sleeve (4), and the water pipe (3) is movably sleeved in the sleeve (4). The inner wall of the barrel (1) is axially provided with two mirror-symmetrical sliding grooves (10) in communication with the threaded grooves (7), and each sliding groove (10) is slidably connected with a sliding block (9) fixedly connected with the sealing cylinder (8). The upper and lower ends of the barrel (1) are each concentrically provided with a threaded groove (7), and the upper and lower cover plates (6) and (12) are respectively threadedly connected in the two threaded grooves (7).

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