Supercritical carbon dioxide fluid circulation booster pump combination valve

Abstract

The utility model provides a supercritical carbon dioxide fluid circulation booster pump combination valve, and relates to the technical field of circulation booster equipment. The system comprises a booster pump and a combination valve, and the booster pump is arranged on the combination valve; the combination valve comprises a mounting box, a valve element and a driving unit, a liquid inlet through hole and a liquid outlet through hole are formed in the mounting box, the liquid inlet end of the booster pump is connected with one side of the liquid inlet through hole through a liquid inlet pipeline, the other side of the liquid inlet through hole is connected with a supercritical carbon dioxide fluid source, and the liquid outlet end of the booster pump is connected with one side of the liquid outlet through hole through a liquid outlet pipeline. The other side of the liquid outlet through hole is connected with a supercritical carbon dioxide fluid using device; a liquid inlet flow limiting hole and a liquid outlet flow limiting hole are formed in the inner wall of the mounting box, one end of the valve element penetrates through the liquid inlet flow limiting hole to be inserted into the liquid inlet through hole, the other end of the valve element penetrates through the liquid outlet flow limiting hole to be inserted into the liquid outlet through hole, and the driving unit can drive the valve element to move back and forth between the liquid inlet through hole and the liquid outlet through hole. The method has the effect of being easy to operate.

Description

Technical Field

[0001] The present application relates to the technical field of circulating supercharging equipment, and in particular to a combined valve for a supercritical carbon dioxide fluid circulating supercharging pump. Background Art

[0002] Supercritical carbon dioxide fluid is a substance widely used in fields such as extraction and drying. The prior art usually uses the method of constructing a supercritical carbon dioxide fluid circulation system to utilize supercritical carbon dioxide fluid.

[0003] The existing supercritical carbon dioxide fluid circulation system generally includes a supercritical carbon dioxide fluid source, a supercritical carbon dioxide fluid using device, a supercharging pump, and multiple electric control valves. The liquid outlet end of the supercritical carbon dioxide fluid source is connected to the liquid inlet of the supercharging pump through a pipeline, the liquid inlet end of the supercritical carbon dioxide fluid using device is connected to the liquid outlet of the supercharging pump through a pipeline, and the liquid outlet end of the supercritical carbon dioxide fluid using device is also connected to the liquid inlet end of the supercritical carbon dioxide fluid source through a pipeline. Electric control valves are provided on each pipeline. These electric control valves are independent of each other and are all electrically connected to the controller of the supercharging pump, so as to be able to achieve precise control and regulation of the flow rate and pressure of the supercritical carbon dioxide fluid.

[0004] However, since this system needs to use multiple independent valves to cooperate with the supercharging pump for combined control, the operation is relatively cumbersome.

[0005] In view of this, there is a need to provide a combined valve for a supercritical carbon dioxide fluid circulating supercharging pump. Summary of the Utility Model

[0006] In order to solve the problem that the existing supercritical carbon dioxide fluid circulation system needs to use multiple independent valves to cooperate with the supercharging pump for combined control and the operation is relatively cumbersome, the present application provides a combined valve for a supercritical carbon dioxide fluid circulating supercharging pump.

[0007] The present application provides a combined valve for a supercritical carbon dioxide fluid circulating supercharging pump, adopting the following technical solution: including a supercharging pump and a combined valve, the supercharging pump is arranged on the combined valve;

[0008] The combined valve includes an installation box, a valve core, and a driving unit. The installation box is provided with a liquid inlet through hole and a liquid outlet through hole. The liquid inlet end of the supercharging pump is connected to one side hole of the liquid inlet through hole through a liquid inlet pipeline. The other side hole of the liquid inlet through hole can be connected to a supercritical carbon dioxide fluid source. The liquid outlet end of the supercharging pump is connected to one side hole of the liquid outlet through hole through a liquid outlet pipeline. The other side hole of the liquid outlet through hole can be connected to a supercritical carbon dioxide fluid using device;

[0009] The inner wall of the installation box is provided with a liquid inlet flow limiting hole leading to the liquid inlet through hole and a liquid outlet flow limiting hole leading to the liquid outlet through hole. One end of the valve core passes through the liquid inlet flow limiting hole and is inserted into the liquid inlet through hole, and the other end of the valve core passes through the liquid outlet flow limiting hole and is inserted into the liquid outlet through hole. The driving unit is in transmission connection with the valve core and can drive the valve core to move back and forth between the liquid inlet through hole and the liquid outlet through hole.

[0010] By adopting the above technical solution, one end of the valve core can pass through the liquid inlet flow limiting hole and be inserted into the liquid inlet through hole, and a liquid inlet flow channel is formed between this end of the valve core and the hole wall of the liquid inlet through hole. The other end of the valve core can pass through the liquid outlet flow limiting hole and be inserted into the liquid outlet through hole, and a liquid outlet flow channel is formed between this end of the valve core and the hole wall of the liquid outlet through hole. The driving unit can drive the valve core to move back and forth between the liquid inlet through hole and the liquid outlet through hole to synchronously change the distances that the valve core is inserted into the liquid inlet through hole and the liquid outlet through hole, so as to be able to increase the cross-sectional area of the liquid inlet flow channel while reducing the cross-sectional area of the liquid outlet flow channel, or reduce the cross-sectional area of the liquid inlet flow channel while increasing the cross-sectional area of the liquid outlet flow channel. Thus, the user can achieve precise control and adjustment of the flow rate and pressure of supercritical carbon dioxide fluid without setting multiple independent valves, and the operation is simple.

[0011] Specifically, the driving unit includes a moving seat and a telescopic cylinder. A kidney-shaped hole leading to the outside is formed on the inner wall of the installation box along the moving direction of the valve core. One side of the valve core passes through the kidney-shaped hole and is connected to the moving seat. The cylinder body of the telescopic cylinder is arranged on the installation box, and the piston rod of the telescopic cylinder is connected to the moving seat and can drive the moving seat to move along the kidney-shaped hole.

[0012] By adopting the above technical solution, the telescopic cylinder can drive the moving seat to move along the kidney-shaped hole to drive the valve core to move through the moving seat.

[0013] Further, a support track is arranged on the installation box along the length direction of the kidney-shaped hole. The moving seat is arranged on the support track and can slide along the support track.

[0014] By adopting the above technical solution, the support track can cooperate with the telescopic cylinder to support the moving seat.

[0015] Further, the piston rod of the telescopic cylinder is connected to the moving seat through a pin.

[0016] By adopting the above technical solution, a detachable connection between the telescopic cylinder and the moving seat can be achieved.

[0017] Further, the valve core includes two blocking plates and a driving member. One of the blocking plates is inserted into each of the liquid outlet flow limiting hole and the liquid inlet flow limiting hole. The driving member is arranged on the moving seat, and the driving member is in transmission connection with the two blocking plates and can drive the two blocking plates to approach or separate from each other. The telescopic cylinder can drive the driving member and the two blocking plates to move back and forth between the liquid inlet through hole and the liquid outlet through hole by driving the moving seat to move.

[0018] By adopting the above technical solution, the driving member can adjust the distance between the two blocking plates by driving the two blocking plates to approach or separate from each other. After the distance between the two blocking plates is determined, the telescopic cylinder can drive the driving member and the two blocking plates to move back and forth between the liquid inlet through hole and the liquid outlet through hole by driving the moving seat to move, so as to be able to enlarge or reduce the cross-sectional area of the liquid outlet flow channel while not changing the cross-sectional area of the liquid inlet flow channel, or enlarge or reduce the cross-sectional area of the liquid inlet flow channel while not changing the cross-sectional area of the liquid outlet flow channel, thereby being able to further realize the precise control and regulation of the flow rate and pressure of the supercritical carbon dioxide fluid.

[0019] Further, the driving member includes a rotary motor, a rotary disk and a pair of connecting rods. The rotary motor is arranged on the moving seat. The rotation center of one side disk surface of the rotary disk is in transmission connection with the rotary motor. Two hinge shafts are arranged at equal intervals around the rotation center of the other side disk surface of the rotary disk. The hinge shafts and the blocking plates correspond to each other one by one. One end of each connecting rod is hinged to the corresponding hinge shaft, and the other end of each connecting rod is hinged to the side of the corresponding blocking plate close to the rotary disk.

[0020] By adopting the above technical solution, the rotary disk can synchronously change the distances between the liquid inlet through hole and the corresponding hinge shaft and between the liquid outlet through hole and the corresponding hinge shaft by rotating, and then change the distances between each blocking plate and the rotary disk, so as to be able to adjust the distance between the two blocking plates.

[0021] Specifically, the inner walls of the bent portions in the liquid inlet pipe and the liquid outlet pipe are both arc-shaped surfaces.

[0022] By adopting the above technical solution, when the supercritical carbon dioxide fluid flows through the bent portion in the liquid inlet pipe or the liquid outlet pipe, the arc-shaped surface can guide the flow direction of the supercritical carbon dioxide fluid, so that the supercritical carbon dioxide fluid is not prone to backflow phenomenon during the process of changing the flow direction.

[0023] Specifically, connection flanges for connecting pipes are provided at the ports on the sides of the liquid inlet through hole and the liquid outlet through hole far from the booster pump.

[0024] By adopting the above technical solution, the supercritical carbon dioxide fluid using device can be connected to the liquid outlet through hole by connecting a pipeline with a connecting flange, and the supercritical carbon dioxide fluid source can be connected to the liquid inlet through hole by connecting a pipeline with a connecting flange.

[0025] In summary, the present application includes the following beneficial technical effects:

[0026] It includes a booster pump and a combined valve, and the booster pump is arranged on the combined valve; the combined valve includes an installation box, a valve core and a driving unit. The installation box is provided with a liquid inlet through hole and a liquid outlet through hole. The liquid inlet end of the booster pump is connected to one side orifice of the liquid inlet through hole through a liquid inlet pipeline, and the other side orifice of the liquid inlet through hole can be connected to a supercritical carbon dioxide fluid source. The liquid outlet end of the booster pump is connected to one side orifice of the liquid outlet through hole through a liquid outlet pipeline, and the other side orifice of the liquid outlet through hole can be connected to a supercritical carbon dioxide fluid using device; an inlet liquid flow limiting hole leading to the inside of the liquid inlet through hole and an outlet liquid flow limiting hole leading to the inside of the liquid outlet through hole are provided on the inner wall of the installation box. One end of the valve core can pass through the inlet liquid flow limiting hole and be inserted into the liquid inlet through hole to form an inlet liquid flow channel between the end of the valve core and the hole wall of the liquid inlet through hole. The other end of the valve core can pass through the outlet liquid flow limiting hole and be inserted into the liquid outlet through hole to form an outlet liquid flow channel between the end of the valve core and the hole wall of the liquid outlet through hole. The driving unit can drive the valve core to move back and forth between the liquid inlet through hole and the liquid outlet through hole to synchronously change the distances at which the valve core is inserted into the liquid inlet through hole and the liquid outlet through hole, so as to be able to increase the cross-sectional area of the inlet liquid flow channel while reducing the cross-sectional area of the outlet liquid flow channel, or reduce the cross-sectional area of the inlet liquid flow channel while increasing the cross-sectional area of the outlet liquid flow channel. Thus, the user can achieve precise control and adjustment of the flow rate and pressure of the supercritical carbon dioxide fluid without setting multiple independent valves, and the operation is simple. Description of the Drawings

[0027] Figure 1 is a perspective view of a supercritical carbon dioxide fluid circulating booster pump combined valve of the present application;

[0028] Figure 2 is a top view of a supercritical carbon dioxide fluid circulating booster pump combined valve of the present application;

[0029] Figure 3 is a schematic cross-sectional view taken along the Figure 2 A-A direction in

[0030] Reference numerals: 1, booster pump; 11, liquid inlet pipe; 12, liquid outlet pipe; 13, arc-shaped surface; 2, combined valve; 21, mounting box; 211, liquid inlet through-hole; 212, liquid outlet through-hole; 213, support rail; 214, connecting flange; 22, valve core; 221, blocking plate; 222, driving member; 2221, rotating motor; 2222, rotating disk; 2223, connecting rod; 23, driving unit; 231, moving seat; 232, telescopic cylinder; 2321, plug pin. Detailed implementation manners

[0031] The following further describes the present application with reference to the attached Figure 1 - attached Figure 3 drawings:

[0032] Refer to Figure 1 and Figure 2 As shown in and, a supercritical carbon dioxide fluid circulation booster pump combined valve provided by the present application includes: a booster pump 1 and a combined valve 2. The combined valve 2 includes a mounting box 21, a valve core 22 and a driving unit 23. The booster pump 1 is arranged on the top of the combined valve 2. Liquid inlet through-holes 211 and liquid outlet through-holes 212 are formed in the box wall of the mounting box 21. One side hole of the liquid inlet through-hole 211 is located on the top wall of the mounting box 21 and is connected to the liquid inlet end of the booster pump 1 through the liquid inlet pipe 11. The other side hole of the liquid inlet through-hole 211 is located on the side wall of the mounting box 21 and is provided with a connecting flange 214 for connecting a pipe. The supercritical carbon dioxide fluid source can be connected to the liquid inlet through-hole 211 by connecting the pipe to the connecting flange 214. One side hole of the liquid outlet through-hole 212 is located on the top wall of the mounting box 21 and is connected to the liquid outlet end of the booster pump 1 through the liquid outlet pipe 12. The other side hole of the liquid outlet through-hole 212 is located on the side wall of the mounting box 21 and is provided with a connecting flange 214 for connecting a pipe. The supercritical carbon dioxide fluid source can be connected to the liquid outlet through-hole 212 by connecting the pipe to the connecting flange 214.

[0033] Refer to Figure 1 and Figure 3, the driving unit 23 includes a moving seat 231 and a telescopic cylinder 232. A waist-shaped hole leading to the inside of the box is horizontally formed on the outer wall of the mounting box 21. Support rails 213 are provided on both the upper and lower sides of the waist-shaped hole along the length direction of the waist-shaped hole. The moving seat 231 is arranged on the support rails 213 and can slide along the support rails 213. The cylinder body of the telescopic cylinder 232 is arranged on the mounting box 21, and the piston rod of the telescopic cylinder 232 is connected to the moving seat 231 through a pin 2321 and can drive the moving seat 231 to move along the support rails 213. Liquid inlet flow-limiting holes leading to the liquid inlet through-hole 211 and liquid outlet flow-limiting holes leading to the liquid outlet through-hole 212 are oppositely formed on the inner wall of the mounting box 21 in the horizontal direction. The valve core 22 includes two blocking plates 221 and a driving member 222. One blocking plate 221 is inserted into each of the liquid outlet flow-limiting hole and the liquid inlet flow-limiting hole, and each blocking plate 221 can block the corresponding liquid outlet flow-limiting hole or liquid inlet flow-limiting hole.

[0034] See Figure 1 and Figure 3 , the driving member 222 includes a rotary motor 2221, a rotary disk 2222 and a pair of connecting rods 2223. The rotary motor 2221 is arranged on the moving seat 231. The driving shaft of the rotary motor 2221 passes through the waist-shaped hole and is connected to the rotary disk 2222. The rotation center of one side disk surface of the rotary disk 2222 is in transmission connection with the rotary motor 2221. Two hinge shafts are equidistantly arranged around the rotation center of the other side disk surface of the rotary disk 2222. The hinge shafts and the blocking plates 221 correspond to the connecting rods 2223 one by one. One end of each connecting rod 2223 is hinged to the corresponding hinge shaft, and the other end of each connecting rod 2223 is hinged to the side of the corresponding blocking plate 221 close to the rotary disk 2222, so that the rotary motor 2221 can synchronously change the distances between the liquid inlet through-hole 211 and the corresponding hinge shaft and between the liquid outlet through-hole 212 and the corresponding hinge shaft by rotating the rotary disk 2222, and then change the distances between each blocking plate 221 and the rotary disk 2222, thereby enabling the adjustment of the distance between the two blocking plates 221.

[0035] Through the above settings, a plugging plate 221 can pass through the liquid inlet flow limiting hole and be inserted into the liquid inlet through hole 211, and a liquid inlet flow channel is formed between the plate edge of the plugging plate 221 and the hole wall of the liquid inlet through hole 211. Another plugging plate 221 can pass through the liquid outlet flow limiting hole and be inserted into the liquid outlet through hole 212, and a liquid outlet flow channel is formed between the plate edge of the plugging plate 221 and the hole wall of the liquid outlet through hole 212. The user can directly drive the moving seat 231 to move through the telescopic cylinder 232 to drive the two plugging plates 221 to move back and forth between the liquid inlet through hole 211 and the liquid outlet through hole 212, so as to synchronously change the distances at which the plugging plates 221 are inserted into the liquid inlet through hole 211 and the liquid outlet through hole 212, so as to be able to increase the cross-sectional area of the liquid inlet flow channel while reducing the cross-sectional area of the liquid outlet flow channel, or reduce the cross-sectional area of the liquid inlet flow channel while increasing the cross-sectional area of the liquid outlet flow channel; or first drive the rotating disk 2222 to rotate through the rotating motor 2221 to adjust the distance between the two plugging plates 221. After the distance between the two plugging plates 221 is determined, then drive the two plugging plates 221 to move back and forth between the liquid inlet through hole 211 and the liquid outlet through hole 212 through the telescopic cylinder 232, so as to be able to expand or reduce the cross-sectional area of the liquid outlet flow channel while not changing the cross-sectional area of the liquid inlet flow channel, or expand or reduce the cross-sectional area of the liquid inlet flow channel while not changing the cross-sectional area of the liquid outlet flow channel, so that the user can accurately control and adjust the flow rate and pressure of the supercritical carbon dioxide fluid without setting multiple independent valves, and the operation is simple.

[0036] Specifically, the inner walls of the bent portions in the liquid inlet pipe 11 and the liquid outlet pipe 12 can be both set as arc-shaped surfaces 13, so that when the supercritical carbon dioxide fluid flows through the bent portions in the liquid inlet pipe 11 or the liquid outlet pipe 12, the arc-shaped surfaces 13 can guide the flow direction of the supercritical carbon dioxide fluid, so that the supercritical carbon dioxide fluid is not prone to backflow during the process of changing the flow direction.

[0037] The working principle of a supercritical carbon dioxide fluid circulating booster pump combined valve of the present application during use is specifically as follows:

[0038] A plugging plate 221 can be inserted into the liquid inlet through hole 211 through the liquid inlet flow limiting hole, and a liquid inlet flow channel is formed between the edge of the plugging plate 221 and the hole wall of the liquid inlet through hole 211. Another plugging plate 221 can be inserted into the liquid outlet through hole 212 through the liquid outlet flow limiting hole, and a liquid outlet flow channel is formed between the edge of the plugging plate 221 and the hole wall of the liquid outlet through hole 212. The user can directly drive the moving seat 231 to move through the telescopic cylinder 232 to drive the two plugging plates 221 to move back and forth between the liquid inlet through hole 211 and the liquid outlet through hole 212, so as to synchronously change the distances of the plugging plates 221 inserted into the liquid inlet through hole 211 and the liquid outlet through hole 212, so as to increase the cross-sectional area of the liquid inlet flow channel while reducing the cross-sectional area of the liquid outlet flow channel, or reduce the cross-sectional area of the liquid inlet flow channel while increasing the cross-sectional area of the liquid outlet flow channel; or first drive the rotating disk 2222 to rotate through the rotating motor 2221 to adjust the distance between the two plugging plates 221. After the distance between the two plugging plates 221 is determined, then drive the moving seat 231 to move through the telescopic cylinder 232 to drive the two plugging plates 221 to move back and forth between the liquid inlet through hole 211 and the liquid outlet through hole 212, so as to be able to expand or reduce the cross-sectional area of the liquid outlet flow channel while not changing the cross-sectional area of the liquid inlet flow channel, or expand or reduce the cross-sectional area of the liquid inlet flow channel while not changing the cross-sectional area of the liquid outlet flow channel, so that the user can accurately control and adjust the flow rate and pressure of the supercritical carbon dioxide fluid without setting multiple independent valves, and the operation is simple.

[0039] It should be noted that the above are all preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A combined valve for a supercritical carbon dioxide fluid circulation booster pump, characterized in that: It includes a booster pump (1) and a combined valve (2), and the booster pump (1) is arranged on the combined valve (2); The combined valve (2) includes an installation box (21), a valve core (22) and a driving unit (23). An inlet liquid through-hole (211) and an outlet liquid through-hole (212) are formed on the installation box (21). The inlet liquid end of the booster pump (1) is connected to one side orifice of the inlet liquid through-hole (211) through an inlet liquid pipeline (11). The other side orifice of the inlet liquid through-hole (211) can be connected to a supercritical carbon dioxide fluid source. The outlet liquid end of the booster pump (1) is connected to one side orifice of the outlet liquid through-hole (212) through an outlet liquid pipeline (12). The other side orifice of the outlet liquid through-hole (212) can be connected to a supercritical carbon dioxide fluid using device; An inlet liquid limiting orifice leading to the inside of the inlet liquid through-hole (211) and an outlet liquid limiting orifice leading to the inside of the outlet liquid through-hole (212) are formed on the inner wall of the installation box (21). One end of the valve core (22) passes through the inlet liquid limiting orifice and is inserted into the inlet liquid through-hole (211). The other end of the valve core (22) passes through the outlet liquid limiting orifice and is inserted into the outlet liquid through-hole (212). The driving unit (23) is in transmission connection with the valve core (22) and can drive the valve core (22) to move back and forth between the inlet liquid through-hole (211) and the outlet liquid through-hole (212).

2. The combined valve of a supercritical carbon dioxide fluid circulation booster pump according to claim 1, characterized in that: The driving unit (23) includes a moving seat (231) and a telescopic cylinder (232). A waist-shaped hole leading to the outside is formed on the inner wall of the installation box (21) along the moving direction of the valve core (22). One side of the valve core (22) passes through the waist-shaped hole and is connected to the moving seat (231). The cylinder body of the telescopic cylinder (232) is arranged on the installation box (21). The piston rod of the telescopic cylinder (232) is connected to the moving seat (231) and can drive the moving seat (231) to move along the waist-shaped hole.

3. The combined valve of a supercritical carbon dioxide fluid circulation booster pump according to claim 2, characterized in that: A support track (213) is arranged on the installation box (21) along the length direction of the waist-shaped hole. The moving seat (231) is arranged on the support track (213) and can slide along the support track (213).

4. The supercritical carbon dioxide fluid circulation booster pump combined valve according to claim 2, wherein: The piston rod of the telescopic cylinder (232) is connected to the moving seat (231) through a pin (2321).

5. The supercritical carbon dioxide fluid circulating booster pump combined valve according to claim 2, characterized in that: The valve core (22) includes two plugging plates (221) and a driving member (222). One of the plugging plates (221) is inserted into each of the outlet liquid limiting orifice and the inlet liquid limiting orifice. The driving member (222) is arranged on the moving seat (231), and the driving member (222) is in transmission connection with the two plugging plates (221) and can drive the two plugging plates (221) to approach or move away from each other. The telescopic cylinder (232) can drive the driving member (222) and the two plugging plates (221) to move back and forth between the inlet liquid through-hole (211) and the outlet liquid through-hole (212) by driving the moving seat (231) to move.

6. The combined valve of a supercritical carbon dioxide fluid circulating booster pump according to claim 5, characterized in that: The driving member (222) includes a rotary motor (2221), a rotary disk (2222) and a pair of connecting rods (2223). The rotary motor (2221) is arranged on the moving seat (231). The rotation center of one side disk surface of the rotary disk (2222) is in transmission connection with the rotary motor (2221). Two hinge shafts are arranged at equal intervals around the rotation center of the other side disk surface of the rotary disk (2222). The hinge shafts and the blocking plate (221) correspond to the connecting rods (2223) one by one. One end of each connecting rod (2223) is hinged to the corresponding hinge shaft, and the other end of each connecting rod (2223) is hinged to the side of the corresponding blocking plate (221) close to the rotary disk (2222).

7. The combined valve of a supercritical carbon dioxide fluid circulating booster pump according to claim 1, characterized in that: The inner walls of the bent parts in the liquid inlet pipe (11) and the liquid outlet pipe (12) are both arc-shaped surfaces (13).

8. The combined valve of a supercritical carbon dioxide fluid circulating booster pump according to claim 1, characterized in that: Connection flanges (214) for connecting pipes are provided at the ports on the sides far from the booster pump (1) of the liquid inlet through holes (211) and the liquid outlet through holes (212).

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