Valve structure for high-low pressure coupling device

Abstract

The utility model discloses a valve structure for a high-low pressure coupling device, which belongs to the technical field of underground cooling of mines and comprises a valve. The valve comprises a valve body, and an asymmetric water flow channel is formed in the center of the valve body. A valve seat is fixedly connected to a large-diameter port of a water flow channel of the valve body, and a valve element is arranged in the water flow channel. A spring is fixedly connected between the valve seat and the valve element, and the valve element is attached to a small-caliber port of the water flow channel of the valve body through the spring. When the valve is installed on the pipeline and fluid flows in from the small-caliber end of the water flow channel, the valve is a forward opening valve; when the valve is installed on the pipeline and fluid flows in from the large-diameter end of the water flow channel, the valve is a reversely-opened valve. When the valve is a reverse opening valve, a driving assembly is arranged on the pipeline; the driving assembly is connected with the valve element and used for driving the valve element to reciprocate in the axial direction of the water flow channel. The valve can be used as a forward valve or a reverse valve so as to control on-off of water in a pipeline.

Description

Technical Field

[0001] The utility model relates to the technical field of mine shaft cooling, in particular to a valve structure for a high-low pressure coupling device. Background Art

[0002] With the continuous increase of the mine mining depth, the underground heat harm has become more and more serious. To reduce the underground operation temperature, at present, most mines are gradually applying a high-low pressure coupling device to the underground cooling system. This device realizes the pressure exchange and heat exchange of fluids by switching the on-off of the conversion valve and the arrangement of pipelines, that is, the high-pressure cold water transported from the ground to the underground is converted into low-pressure cold water through the on-off of the conversion valve and then transported to the underground working face for cooling use; and the low-pressure hot water generated after underground cooling is pushed back to the ground for cooling through the on-off of the conversion valve. Therefore, an effective conversion valve is the key factor affecting the entire cooling effect.

[0003] Therefore, a valve structure for a high-low pressure coupling device and a high-low pressure coupling device are proposed. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a valve structure for a high-low pressure coupling device and a high-low pressure coupling device, aiming to solve or improve at least one of the above technical problems.

[0005] To achieve the above purpose, the utility model provides the following solution: The utility model provides a valve structure for a high-low pressure coupling device, including a valve and a driving component; the valve includes a valve body, the valve body is used for connecting with a pipeline, an asymmetric water flow channel is opened in the center of the valve body, and the diameters of both ends of the water flow channel are not equal; a valve seat is fixedly connected to the large-diameter port of the water flow channel of the valve body, and a valve core is arranged in the water flow channel; a spring is fixedly connected between the valve seat and the valve core, and the spring makes the valve core fit at the small-diameter port of the water flow channel.

[0006] When the valve is installed on the pipeline and the fluid flows in from the small-diameter end of the water flow channel, the valve is a forward-opening valve.

[0007] When the valve is installed on the pipeline and the fluid flows in from the large-diameter end of the water flow channel, the valve is a reverse-opening valve; when the valve is a reverse-opening valve, a driving component is arranged on the pipeline; the driving component is connected with the valve core and is used for driving the valve core to reciprocate axially along the water flow channel.

[0008] Preferably, a copper sleeve is fixedly connected to the valve seat, and a guide rod on the valve core is slidably connected with the inner wall of the copper sleeve.

[0009] Preferably, seals are respectively clamped between both ends of the valve body and the pipelines, and the valve body and the pipelines are fixedly connected by fasteners.

[0010] Preferably, when the valve is a reverse-opening valve, the pipeline includes a first pipeline and a second pipeline, the first pipeline and the second pipeline are perpendicular to each other, the valve body is fixedly connected to the first pipeline, and the valve core is located on the side close to the second pipeline; the driving assembly is arranged on the second pipeline.

[0011] Preferably, the driving assembly includes a piston cylinder fixedly connected to the outer wall of the second pipeline, and a piston rod on the piston cylinder penetrates through the pipe wall of the second pipeline and extends into the first pipeline and is fixedly connected to the valve core.

[0012] Preferably, a front magnetic inductor and a rear magnetic inductor are fixedly connected to the outer wall of the piston cylinder, and a magnetic ring is fixedly sleeved at one end of the piston rod located inside the piston cylinder.

[0013] Preferably, a water seal is fixedly connected to the piston rod, and the water seal is embedded in the pipe wall of the second pipeline.

[0014] The present utility model discloses the following technical effects: When the valve in this application is installed, it can be used as a forward valve or a reverse valve through different installation directions. When used as a forward valve, it is driven to open by water power. When used as a reverse valve, a driving assembly is installed on the pipeline to drive it to open, so as to control the on-off of the water body in the pipeline. When applied to a high-low pressure coupling device, it can control the conduction direction of the fluid in the high-low pressure coupling device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings forming a part of this application are used to provide a further understanding of this application. The schematic embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation to this application. In the drawings:

[0016] Figure 1 is a schematic structural diagram of the valve in the present utility model;

[0017] Figure 2 is a schematic structural diagram of the driving assembly in the present utility model;

[0018] Figure 3 is a schematic connection structural diagram of the valve in the present utility model and the pipeline when the valve is a reverse-opening valve;

[0019] Figure 4 is a schematic application diagram of the present utility model in a high-low pressure coupling device.

[0020] In the figure: 1. Valve; 101. Valve body; 102. Valve seat; 103. Spring; 104. Copper sleeve; 105. Valve core; 1-1. Forward-opening valve; 1-2. Reverse-opening valve; 2. Driving assembly; 201. Piston rod; 202. Water seal; 203. Piston cylinder; 204. Front magnetic inductor; 205. Rear magnetic inductor; 206. Magnetic ring; 207. Flow control valve; 3. Seal; 4. Fastener; 5. First pipeline; 6. Second pipeline; 7. Pilot pipeline; 7-1. First pilot pipeline; 7-2. Second pilot pipeline; 8. Pilot control valve; 8-1. First pilot control valve; 8-2. Second pilot control valve; 9. Control system; 10. High-pressure cold water pipeline; 11. Low-pressure hot water pipeline; 12. High-pressure hot water pipeline; 13. Low-pressure cold water pipeline; 14. Fluid exchange pipeline. Detailed implementation manner

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the drawings and specific implementation manners.

[0023] Referring to Figures 1 - 4 , the present invention provides a valve structure for a high-low pressure coupling device, including a valve 1 and a driving assembly 2; the valve 1 includes a valve body 101, and the valve body 101 is used to be connected to a pipeline. An asymmetric water flow channel is opened in the center of the valve body 101. The water flow channel provides a space for the fluid to flow through, and the calibers at both ends of the water flow channel are not equal; a valve seat 102 is fixedly connected to the large-caliber port of the water flow channel of the valve body 101, and a valve core 105 is arranged inside the water flow channel; a spring 103 is fixedly connected between the valve seat 102 and the valve core 105, and the spring 103 makes the valve core 105 fit at the small-caliber port of the water flow channel; the contact surface between the valve body 101 and the valve core 105 is a smooth surface, which plays a sealing and bearing role;

[0024] The spring 103 has a reset function. When there is no other external force, under the action of the spring 103, the valve core 105 fits at the small-caliber port of the water flow channel;

[0025] When the valve 1 is installed on the pipeline and the fluid flows in from the small-diameter end of the water flow channel, the valve 1 is a forward-opening valve 1-1; when it is a forward-opening valve 1-1, the pressure of the fluid pushes the valve core 105, causing the spring 103 to compress, and the valve core 105 separates from the small-diameter port of the water flow channel, opening the water flow channel and realizing the circulation of the fluid.

[0026] When the valve 1 is installed on the pipeline and the fluid flows in from the large-diameter end of the water flow channel, the valve 1 is a reverse-opening valve 1-2; when the valve 1 is a reverse-opening valve 1-2, a driving assembly 2 is arranged on the pipeline; the driving assembly 2 is connected to the valve core 105 and is used to drive the valve core 105 to reciprocate axially along the water flow channel.

[0027] The driving assembly 2 is the power component of the valve 1, which is used for the reverse opening or closing of the valve 1. As a reverse-opening valve, when it is necessary to open the water flow channel, the driving assembly 2 drives the valve core 105 to leave the small-diameter port of the water flow channel, thereby opening the water flow channel and realizing the circulation of the fluid.

[0028] In a further optimized solution, a copper sleeve 104 is fixedly connected to the valve seat 102, and the guide rod on the valve core 105 is slidably connected to the inner wall of the copper sleeve 104, so as to guide the movement of the valve core 105.

[0029] In a further optimized solution, seals 3 are respectively clamped between the two ends of the valve body 101 and the pipeline, and the valve body 101 and the pipeline are fixedly connected by fasteners 4.

[0030] The fasteners 4 include a plurality of fastening bolts; the valve body 101 is connected to the pipeline through the fasteners 4. By applying a pre-tightening force, the connection can be made without looseness, ensuring sealing and no leakage; when connecting, seals 3 are arranged on both sides of the valve body 101 to play a sealing role.

[0031] In a further optimized solution, when the valve 1 is a reverse-opening valve 1-2, the pipeline includes a first pipeline 5 and a second pipeline 6, the first pipeline 5 and the second pipeline 6 are perpendicular to each other, the valve body 101 is fixedly connected to the first pipeline 5, and the valve core 105 is located on the side close to the second pipeline 6; the driving assembly 2 is arranged on the second pipeline 6.

[0032] A pilot pipeline 7 is fixedly connected and communicated between the first pipeline 5 and the second pipeline 6. The reverse-opening valve 1 is located between the two ends of the pilot pipeline 7. A pilot control valve 8 is fixedly connected to the pilot pipeline 7 and is used to balance the pressures on the first pipeline 5 and the second pipeline 6.

[0033] The driving form of the driving component 2 can be hydraulic cylinder drive, electric cylinder drive or other driving forms. In this application, the hydraulic cylinder drive is taken as an example for introduction: The driving component 2 includes a piston cylinder 203. The flange on the piston cylinder 203 is fixedly connected to the outer wall of the second pipeline 6. The piston rod 201 on the piston cylinder 203 penetrates through the pipe wall of the second pipeline 6 and extends into the first pipeline 5 and is fixedly connected to the valve core 105.

[0034] In a further optimized solution, a front magnetic inductor 204 and a rear magnetic inductor 205 are fixedly connected to the outer wall of the piston cylinder 203. A magnetic ring 206 is fixedly sleeved on one end of the piston rod 201 located inside the piston cylinder 203.

[0035] In a further optimized solution, a water seal 202 is fixedly connected to the piston rod 201. The water seal 202 is embedded in the pipe wall of the second pipeline 6, playing a sealing role.

[0036] A control system 9 is also provided. As the piston rod 201 moves, the magnetic ring 206 moves accordingly. The front magnetic inductor 204 is used to detect whether the magnetic ring 206 reaches a specified position in the front of the hydraulic cylinder and transmits it to the control system 9 in the form of an electrical signal. The rear magnetic inductor 205 is used to detect whether the magnetic ring 206 reaches a specified position in the rear of the hydraulic cylinder and transmits it to the control system 9 in the form of an electrical signal, so as to detect the position of the piston rod 201, so that the reverse valve can be monitored and controlled in real time in the control system 9 whether it opens or closes in reverse;

[0037] The control system 9 is the power source and control source of the driving component 2. It can determine the opening and closing state of the valve 1 by monitoring the position of the magnetic ring 206. It can also issue a control instruction to the driving component 2 to realize the integrated control of the opening and closing state of the valve 1;

[0038] The control system 9 is a hydraulic control system. A flow control valve 207 is hydraulically connected to the piston cylinder 203. The flow control valve 207 pre-sets the flow rate. The flow control valve 207 is hydraulically connected to the control system 9. By setting the flow control valve 207 to control the speed when the piston rod 201 in the hydraulic cylinder retracts, the speed when the valve 1 closes is slowed down, so as to reduce the structural damage of the valve body caused by fluid impact.

[0039] According to the different uses and layout positions of the valve 1, the first pipeline 5 and the second pipeline 6 can be refined into a high-pressure cold water pipeline 10, a low-pressure hot water pipeline 11, a high-pressure hot water pipeline 12, a low-pressure cold water pipeline 13, and a fluid exchange pipeline 14 in a high-low pressure coupling device; the reverse opening valve 1-2 is arranged between the high-pressure cold water pipeline 10 and the fluid exchange pipeline 14, and between the low-pressure cold water pipeline 13 and the fluid exchange pipeline 14; the forward opening valve 1-1 is arranged between the low-pressure hot water pipeline 11 and the fluid exchange pipeline 14, and between the high-pressure hot water pipeline 12 and the fluid exchange pipeline 14.

[0040] The high-low pressure coupling device is a downhole temperature reduction device; the first pipe 5, the second pipe 6, the pilot pipe 7, the pilot pipe 7-1, the pilot pipe 7-2, the pilot control valve 8, the pilot control valve 8-1, the pilot control valve 8-2, the high-pressure cold water pipe 10, the low-pressure hot water pipe 11, the high-pressure hot water pipe 12 and the fluid exchange pipe 14 involved in the present utility model are only for the description of the application of this patent in the high-low pressure coupling device.

[0041] The reverse-opening valve 1-2 is configured with a pilot pipe 7 and a pilot control valve 8, which are used to balance the pressures in the pipes on both sides when the reverse-opening valve 1-2 is opened, reduce the working resistance and structural size of the driving component 2, eliminate the water hammer effect when the reverse-opening valve 1-2 is opened, and ensure that each component is not damaged by impact; according to the different layout positions of the reverse-opening valve 1-2 in the high-low pressure coupling device, the pilot pipe 7 can be refined into a pilot pipe 7-1 and a pilot pipe 7-2; the pilot control valve 8 can be refined into a pilot control valve 8-1 and a pilot control valve 8-2; the pilot pipe 7-1 and the pilot control valve 8-1 are connected between the high-pressure cold water pipe 10 and the fluid exchange pipe 14; the pilot pipe 7-2 and the pilot control valve 8-2 are connected between the low-pressure cold water pipe 13 and the fluid exchange pipe 14;

[0042] The driving components 2 are respectively arranged on the low-pressure cold water pipe 13 and the fluid exchange pipe 14; and are used to respectively control the opening or closing of the reverse-opening valve 1-2 arranged between the low-pressure cold water pipe 13 and the fluid exchange pipe 14 and between the high-pressure cold water pipe 10 and the fluid exchange pipe 14.

[0043] The present utility model is applied to the high-low pressure coupling device in the downhole temperature reduction system. By opening or closing the valve 1, it is possible to control the high-pressure cold water to flow from the high-pressure cold water pipe 10 into the fluid exchange pipe 14, the low-pressure hot water to flow from the low-pressure hot water pipe 11 into the fluid exchange pipe 14, and the high-pressure hot water to flow from the fluid exchange pipe 14 into the high-pressure hot water pipe 12; the low-pressure cold water to flow from the fluid exchange pipe 14 into the low-pressure cold water pipe 13.

[0044] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0045] The embodiments described above are only descriptions of the preferred modes of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A valve structure for a high-low voltage coupling device, characterized in that: It includes a valve (1) and a driving assembly (2); the valve (1) includes a valve body (101) which is used to be connected to a pipeline. An asymmetric water flow channel is provided in the center of the valve body (101), and the diameters of both ends of the water flow channel are not equal. A valve seat (102) is fixedly connected to the large-diameter port of the water flow channel of the valve body (101), and a valve core (105) is arranged inside the water flow channel. A spring (103) is fixedly connected between the valve seat (102) and the valve core (105), and the spring (103) makes the valve core (105) fit with the valve body (101) at the small-diameter port of the water flow channel. When the valve (1) is installed on the pipeline and the fluid flows in from the small-diameter end of the water flow channel, the valve (1) is a forward-opening valve (1-1). When the valve (1) is installed on the pipeline and the fluid flows in from the large-diameter end of the water flow channel, the valve (1) is a reverse-opening valve (1-2). When the valve (1) is a reverse-opening valve (1-2), a driving assembly (2) is arranged on the pipeline. The driving assembly (2) is connected to the valve core (105) and is used to drive the valve core (105) to reciprocate axially along the water flow channel.

2. The valve structure for the high-low voltage coupling device according to claim 1, characterized in that: A copper sleeve (104) is fixedly connected to the valve seat (102), and the guide rod on the valve core (105) is slidably connected to the inner wall of the copper sleeve (104).

3. The valve structure for the high-low voltage coupling device according to claim 1, characterized in that: Seals (3) are respectively clamped between both ends of the valve body (101) and the pipeline, and the valve body (101) and the pipeline are fixedly connected by fasteners (4).

4. The valve structure for the high-low voltage coupling device according to claim 1, characterized in that: When the valve (1) is a reverse-opening valve (1-2), the pipeline includes a first pipeline (5) and a second pipeline (6). The first pipeline (5) and the second pipeline (6) are perpendicular to each other. The valve body (101) is fixedly connected to the first pipeline (5), and the valve core (105) is located on the side close to the second pipeline (6). The driving assembly (2) is arranged on the second pipeline (6).

5. The valve structure for the high-low voltage coupling device according to claim 4, characterized in that: The driving assembly (2) includes a piston cylinder (203) fixedly connected to the outer wall of the second pipeline (6). The piston rod (201) on the piston cylinder (203) penetrates through the pipe wall of the second pipeline (6) and extends into the first pipeline (5) and is fixedly connected to the valve core (105).

6. The valve structure for the high-low voltage coupling device according to claim 5, characterized in that: A front magnetic inductor (204) and a rear magnetic inductor (205) are fixedly connected to the outer wall of the piston cylinder (203), and a magnetic ring (206) is fixedly sleeved at one end of the piston rod (201) located inside the piston cylinder (203).

7. The valve structure for the high-low voltage coupling device according to claim 5, characterized in that: A water seal (202) is fixedly connected to the piston rod (201), and the water seal (202) is embedded in the pipe wall of the second pipeline (6).

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