Integral three-position four-way reversing valve

Abstract

The integral type three-position four-way reversing valve comprises an energy accumulator body and a three-position four-way reversing valve body, a piston and a piston rod are connected into an energy accumulator shell in a sliding mode, the piston rod and the piston are connected together in a threaded connection mode, and a rack part is arranged on the piston rod; a valve body shell is fixedly connected into the energy accumulator shell, an end cover is fixedly connected to the front end of the valve body shell, a rotating rod is rotationally connected into the end cover, a gear is fixedly connected to the circumferential face of the rotating rod and meshed with a rack part on the piston rod, and a conversion base is fixedly connected to the rear end of the rotating rod. And the rear end of the valve body shell is fixedly connected with a valve seat. By means of the transmission mode of the gear and the rack, when the rack part on the piston rod axially moves, the gear can be driven to rotate, then the rotating rod and the gear are driven to synchronously rotate, in this way, when the rotating rod rotates, the energy accumulator cannot be driven to vibrate, and therefore the energy accumulator is not prone to being damaged, the production cost is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic reversing valves, and in particular to an integrated three-position four-way reversing valve. Background Art

[0002] In oil drilling well control, blowout preventers are often used to further ensure the safety of the drilling process. The blowout preventer control device mainly generates high-pressure control fluid or high-pressure gas by a pump group and stores it in an accumulator. When the blowout preventer needs to be opened or closed, the high-pressure control fluid or high-pressure gas from the accumulator is distributed to each control object, namely the blowout preventer, through a three-position four-way rotary valve.

[0003] The three-position four-way reversing valve has three working states, namely, open position, closed position and neutral position. The piston rod of the accumulator drives the rotating handle fixedly connected to the valve body tie rod to rotate, so that the three-position four-way reversing valve changes its working position. When the handle is turned to the corresponding position, the oil port connection state on the valve seat is changed to achieve reversal, thereby controlling the switch of the blowout preventer. When the existing three-position four-way reversing valve is in use, the piston rod of the accumulator is connected to the rotating handle by a connecting rod. As a result, when the rotating handle is rotated, the piston rod will drive the accumulator to vibrate in the vertical direction. The accumulator is easy to damage and needs to be replaced frequently, which increases maintenance costs and reduces efficiency. Therefore, it is necessary to design an integral three-position four-way reversing valve. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an integrated three-position four-way reversing valve.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an integral three-position four-way reversing valve, comprising an accumulator body and a three-position four-way reversing valve body, the accumulator body comprising an accumulator housing, a piston and a piston rod, the accumulator housing is slidably connected with the piston and the piston rod, the piston rod and the piston are connected together by a threaded connection, and a rack portion is provided on the piston rod; the three-position four-way reversing valve body comprises a valve body housing, an end cover, a rotating rod, a gear, a conversion seat and a valve seat, the accumulator housing is fixedly connected with the valve body housing, the front end of the valve body housing is fixedly connected with the end cover, the end of the end cover is rotatably connected with the rotating rod, the circumferential surface of the rotating rod is fixedly connected with a gear, the gear is meshed with the rack portion on the piston rod, the front end of the rotating rod is provided with a rotating plate, the front end of the rotating plate is fixedly connected with a handle, the rear end of the rotating rod is fixedly connected with the conversion seat, and the conversion seat is rotatably connected to the valve body housing; the rear end of the valve body housing is fixedly connected with the valve seat.

[0006] As a further description of the above technical solution: One end of the piston rod extending out of the accumulator housing is fixedly connected with an end seal.

[0007] As a further description of the above technical solution: A second mounting groove is formed on the circumferential surface of the connection between the piston rod and the piston, and a second sealing gasket is embedded in the second mounting groove.

[0008] As a further description of the above technical solution: A first mounting groove is formed on the circumferential surface of the connection between the piston rod and the accumulator housing, and an O-ring and a first sealing gasket are embedded in the first mounting groove.

[0009] As a further description of the above technical solution: A positioning plate is fixedly connected to the circumferential surface of the rotating rod, a positioning hole is opened on the front end surface of the positioning plate, the positioning hole is in an arc shape, and the center of the arc is concentric with the center of the rotating rod, a positioning column is slidably connected inside the positioning hole, and the positioning column is fixedly connected to the end cover.

[0010] As a further description of the above technical solution: The circumferential surface of the rotating rod is rotatably connected with a rotating ring, the upper end of the rotating ring is fixedly connected with a fixed cylinder, the interior of the fixed cylinder is slidably connected with a moving rod, the upper end of the moving rod is fixedly connected with a connecting block, the connecting block is fixedly connected to the rotating plate; the interior of the fixed cylinder is fixedly connected with a spring, and the spring is fixedly connected to the moving rod.

[0011] As a further description of the above technical solution: A clamping block is fixedly connected to the front end of the rotating rod; a clamping hole and a circular hole are opened on the front end surface of the rotating plate, the clamping hole is connected with the circular hole, and the clamping hole cooperates with the clamping block.

[0012] As a further description of the above technical solution: An auxiliary plate is fixedly connected to the circumferential surface of the rotating rod, a U-shaped hole is opened on the front end surface of the auxiliary plate, and an auxiliary rod is fixedly connected to the rear end of the rotating plate, and the auxiliary rod cooperates with the U-shaped hole.

[0013] The present invention has the following beneficial effects: 1. Compared with the prior art, the integrated three-position four-way reversing valve is provided with a piston, a piston rod rack portion, a gear and a rotating rod, and utilizes a gear plus rack transmission mode. When the rack portion on the piston rod moves axially, it drives the gear to rotate, and then drives the rotating rod and the gear to rotate synchronously. In this way, the rotating rod rotates without causing the accumulator to vibrate, thereby making the accumulator less likely to be damaged, reducing production costs, and improving work efficiency.

[0014] 2. Compared with the prior art, this integrated three-position four-way reversing valve is provided with a clamping hole, a circular hole, a clamping block, a connecting block, a moving rod, a spring, a fixed cylinder and a rotating ring. In the initial state, under the action of the spring, the clamping block is located inside the circular hole of the rotating plate, so that when the handle is touched, the rotating plate is idle and the rotating rod is not driven to rotate, thereby effectively preventing the change of the working position of the three-position four-way reversing valve; when the handle is needed to drive the rotating rod to rotate, the handle is pressed down so that the clamping block is clamped into the clamping hole of the rotating plate, which makes it easy to drive the rotating rod to rotate, thereby facilitating the change of the working position of the three-position four-way reversing valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of an integrated three-position four-way reversing valve proposed by the present invention; Figure 2 The present invention provides an integrated three-position four-way reversing valve Figure 1 Enlarged view of part A; Figure 3 A schematic diagram of the structure inside the accumulator body of an integrated three-position four-way reversing valve proposed by the present invention; Figure 4 The present invention provides an integrated three-position four-way reversing valve Figure 3 Enlarged view of part B; Figure 5 The present invention provides an integrated three-position four-way reversing valve Figure 3 Enlarged view of part C in the middle; Figure 6 A schematic diagram of the structure inside a three-position four-way reversing valve body of an integrated three-position four-way reversing valve proposed by the present invention; Figure 7 The present invention provides an integrated three-position four-way reversing valve Figure 6 Enlarged view of part D in the middle.

[0016] Legend: 1. Accumulator body; 101. Accumulator shell; 102. Piston; 103. Piston rod; 1031. Rack; 2. Three-position four-way reversing valve body; 201. Valve body shell; 202. End cover; 203. Rotating rod; 204. Gear; 205. Conversion seat; 206. Valve seat; 3. Positioning plate; 4. Positioning hole; 5. Positioning column; 6. Rotating plate; 7. Handle; 8. Clamping hole; 9. Clamping block; 10. Circular hole; 11. End seal; 12. First mounting groove; 13. Auxiliary plate; 14. First sealing gasket; 15. O-ring; 16. Second mounting groove; 17. Second sealing gasket; 18. Fixed cylinder; 19. Rotating ring; 20. Spring; 21. Moving rod; 22. Connecting block; 23. Auxiliary rod; 24. U-shaped hole. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Reference Figure 1-7 The present invention provides an integrated three-position four-way reversing valve, comprising an accumulator body 1 and a three-position four-way reversing valve body 2. The accumulator body 1 (it should be noted that the accumulator body 1 here can be an actuator such as a cylinder or a hydraulic cylinder) comprises an accumulator housing 101, a piston 102 and a piston rod 103. The accumulator housing 101 is slidably connected with the piston 102 and the piston rod 103. The piston rod 103 is connected to the piston 102 by a threaded connection. A rack portion 1031 is provided on the piston rod 103. The three-position four-way reversing valve body 2 comprises a valve body housing 201, an end cover 202, a rotating rod 203, a gear 2 04. Conversion seat 205 and valve seat 206. The valve body shell 201 is fixedly connected inside the accumulator shell 101. The end cover 202 is fixedly connected to the front end of the valve body shell 201. The rotating rod 203 is rotatably connected inside the end cover 202. The circumferential surface of the rotating rod 203 is fixedly connected to the gear 204. The gear 204 is meshed with the rack part 1031 on the piston rod 103. A rotating plate 6 is provided at the front end of the rotating rod 203. The handle 7 is fixedly connected to the front end of the rotating plate 6. The conversion seat 205 is fixedly connected to the rear end of the rotating rod 203. The conversion seat 205 is rotatably connected to the valve body shell 201; the valve seat 206 is fixedly connected to the rear end of the valve body shell 201.

[0019] Specifically, the piston 102 of the accumulator body 1 performs axial movement, thereby driving the piston rod 103 to perform axial movement. At this time, when the rack portion 1031 on the piston rod 103 generates axial movement, it will drive the gear 204 to rotate, and then drive the rotating rod 203 and the gear 204 to rotate synchronously, so that the rotating rod 203 will not cause the accumulator to vibrate while rotating, thereby making the accumulator less likely to be damaged, reducing production costs and improving work efficiency; at the same time, as the rotating rod 203 rotates, it will drive the conversion seat 205 to rotate, thereby changing the working position of the three-position four-way reversing valve body 2.

[0020] One end of the piston rod 103 extending out of the accumulator housing 101 is fixedly connected to an end seal 11 . During operation, the end seal 11 can prevent the piston rod 103 from excessively shrinking into the accumulator housing 101 .

[0021] A second mounting groove 16 is provided on the circumferential surface of the connection between the piston rod 103 and the piston 102, and a second sealing gasket 17 is embedded in the second mounting groove 16. During operation, the second sealing gasket 17 is provided to improve the sealing effect of the connection between the piston rod 103 and the piston 102 under the action of the second sealing gasket 17.

[0022] A first mounting groove 12 is provided on the circumferential surface of the connection between the piston rod 103 and the accumulator housing 101, and an O-ring 15 and a first sealing gasket 14 are embedded inside the first mounting groove 12. During operation, by setting the O-ring 15 and the first sealing gasket 14, the sealing performance of the connection between the piston rod 103 and the accumulator housing 101 can be improved to ensure that the high-pressure gas or liquid inside the accumulator housing 101 will not overflow, and the stability of the movement of the piston rod 103 is also ensured.

[0023] A positioning plate 3 is fixedly connected to the circumferential surface of the rotating rod 203, and a positioning hole 4 is opened on the front end surface of the positioning plate 3. The positioning hole 4 is in an arc shape, and the center of the arc is concentric with the center of the rotating rod 203. A positioning column 5 is slidably connected inside the positioning hole 4, and the positioning column 5 is fixedly connected to the end cover 202. During operation, the cooperation between the positioning hole 4 and the positioning column 5 can facilitate judgment of whether the valve body has reached the preset working position.

[0024] The circumferential surface of the rotating rod 203 is rotatably connected with a rotating ring 19, the upper end of the rotating ring 19 is fixedly connected with a fixed cylinder 18, the interior of the fixed cylinder 18 is slidably connected with a moving rod 21, the upper end of the moving rod 21 is fixedly connected with a connecting block 22, and the connecting block 22 is fixedly connected to the rotating plate 6; the interior of the fixed cylinder 18 is fixedly connected with a spring 20, and the spring 20 is fixedly connected to the moving rod 21; the front end of the rotating rod 203 is fixedly connected with a clamping block 9; the front end surface of the rotating plate 6 is provided with a clamping hole 8 and a circular hole 10, the clamping hole 8 is connected to the circular hole 10, and the clamping hole 8 is connected to the clamping block 9. When the handle 7 is not in use, the block 9 is located inside the circular hole 10 of the rotating plate 6 under the action of the spring 20. In this way, when the handle 7 is touched, the rotating plate 6 is idle, and the rotating rod 203 will not be driven to rotate, thereby effectively preventing the change of the position of the three-position four-way reversing valve; when the handle 7 is needed to drive the rotating rod 203 to rotate, the handle 7 is pressed down to make the block 9 clamped into the clamping hole 8 of the rotating plate 6, so that it is convenient to drive the rotating rod 203 to rotate, thereby facilitating the change of the position of the three-position four-way reversing valve.

[0025] The circumferential surface of the rotating rod 203 is fixedly connected with the auxiliary plate 13, and the front end surface of the auxiliary plate 13 is provided with a U-shaped hole 24. The rear end of the rotating plate 6 is fixedly connected with the auxiliary rod 23, and the auxiliary rod 23 cooperates with the U-shaped hole 24. When working, through the U-shaped hole 24 and the auxiliary rod 23, when the handle 7 is pressed down, the auxiliary rod 23 is also driven to enter the U-shaped hole 24. In this way, when the rotating plate 6 is rotated again, the rotating rod 203 can be driven to rotate smoothly, and the wear of the clamping block 9 and the clamping hole 8 can also be reduced.

[0026] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An integrated three-position four-way reversing valve, comprising an accumulator body (1) and a three-position four-way reversing valve body (2), characterized in that: The accumulator body (1) comprises an accumulator housing (101), a piston (102) and a piston rod (103); the accumulator housing (101) is slidably connected with the piston (102) and the piston rod (103); the piston rod (103) and the piston (102) are connected together by threaded connection; the piston rod (103) is provided with a rack portion (1031); the three-position four-way reversing valve body (2) comprises a valve body housing (201), an end cover (202), a rotating rod (203), a gear (204), a conversion seat (205) and a valve seat (206); the accumulator housing (101) is fixedly connected with the valve body housing (201) The front end of the valve body shell (201) is fixedly connected to an end cover (202), the end cover (202) is rotatably connected to a rotating rod (203), the circumferential surface of the rotating rod (203) is fixedly connected to a gear (204), the gear (204) meshes with a rack portion (1031) on the piston rod (103), the front end of the rotating rod (203) is provided with a rotating plate (6), the front end of the rotating plate (6) is fixedly connected to a handle (7), the rear end of the rotating rod (203) is fixedly connected to a conversion seat (205), the conversion seat (205) is rotatably connected to the valve body shell (201); the rear end of the valve body shell (201) is fixedly connected to a valve seat (206).

2. The integrated three-position four-way reversing valve according to claim 1, characterized in that: One end of the piston rod (103) extending out of the accumulator housing (101) is fixedly connected to an end seal (11).

3. The integrated three-position four-way reversing valve according to claim 1, characterized in that: A second mounting groove (16) is provided on the circumferential surface of the connection between the piston rod (103) and the piston (102), and a second sealing gasket (17) is embedded in the second mounting groove (16).

4. The integrated three-position four-way reversing valve according to claim 1, characterized in that: A first mounting groove (12) is provided on the circumferential surface of the connection between the piston rod (103) and the accumulator housing (101), and an O-type sealing ring (15) and a first sealing gasket (14) are embedded in the first mounting groove (12).

5. The integrated three-position four-way reversing valve according to claim 1, characterized in that: A positioning plate (3) is fixedly connected to the circumferential surface of the rotating rod (203); a positioning hole (4) is provided on the front end surface of the positioning plate (3); the positioning hole (4) is in an arc shape, and the center of the arc is concentric with the center of the rotating rod (203); a positioning column (5) is slidably connected inside the positioning hole (4); and the positioning column (5) is fixedly connected to the end cover (202).

6. The integrated three-position four-way reversing valve according to claim 1, characterized in that: The rotating rod (203) is rotatably connected to a rotating ring (19) on its circumferential surface; the upper end of the rotating ring (19) is fixedly connected to a fixed cylinder (18); a moving rod (21) is slidably connected inside the fixed cylinder (18); a connecting block (22) is fixedly connected to the upper end of the moving rod (21); the connecting block (22) is fixedly connected to the rotating plate (6); a spring (20) is fixedly connected inside the fixed cylinder (18); the spring (20) is fixedly connected to the moving rod (21).

7. The integrated three-position four-way reversing valve according to claim 1, characterized in that: A clamping block (9) is fixedly connected to the front end of the rotating rod (203); a clamping hole (8) and a circular hole (10) are provided on the front end surface of the rotating plate (6); the clamping hole (8) is communicated with the circular hole (10), and the clamping hole (8) cooperates with the clamping block (9).

8. The integrated three-position four-way reversing valve according to claim 1, characterized in that: The circumferential surface of the rotating rod (203) is fixedly connected to an auxiliary plate (13), a front end surface of the auxiliary plate (13) is provided with a U-shaped hole (24), the rear end of the rotating plate (6) is fixedly connected to an auxiliary rod (23), and the auxiliary rod (23) cooperates with the U-shaped hole (24).

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