Embedded high-pressure floater drain valve

Abstract

The invention relates to an embedded high-pressure floater drain valve, which is mounted on a base in a hydrogen ion liquid separator to realize automatic discharge and cut-off of high-pressure ion liquid in the separator. A valve seat assembly of the embedded type installed high-pressure floater drain valve is installed in a valve seat inserting hole, and the valve seat inserting hole is divided into a medium inlet located in the upper end of a valve seat and a medium outlet located in the lower end of the valve seat. The valve element is axially and movably installed in the valve seat inserting hole and located on the top of the valve seat, an outer conical surface structure is arranged at the bottom of the valve element and inserted into a second channel in the center of the valve seat, a sealing pair is formed at the conical surface and an orifice of the second channel, the medium inlet and the medium outlet are separated, and valve sealing is achieved. The floater assembly, the installation base assembly and the lever assembly are used for driving the valve element to move upwards, the reset spring is installed on the top face of the valve element and used for achieving resetting of the valve element, and finally high-liquid-level discharging and low-liquid-level stopping of the high-pressure ionic liquid in the separator are achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of ultra-high pressure ionic liquid type liquid piston hydrogen compressors, and is applied to the separation, recovery and quantitative distribution process of ionic liquid mixed in hydrogen in ultra-high pressure ionic liquid type liquid piston hydrogen compressor products, and specifically relates to an embedded high pressure float drain valve. Background Art

[0002] In the process of ion liquid separation, recovery and quantitative distribution, the ultra-high pressure ion liquid type liquid piston hydrogen compressor needs a valve that can automatically identify the accumulated ion liquid level in the hydrogen ion liquid separator and automatically open and close according to the change of the liquid level, so as to discharge the accumulated ion liquid in the separator and realize the function of separation and recovery of ion liquid. Since the pressure of hydrogen and ion liquid in the separator can reach up to 90MPa, the installation space in the separator is small, and no similar products that can achieve this function are found on the market. Summary of the invention

[0003] The invention provides an embedded high-pressure float drain valve, which realizes automatic discharge and cutoff of high-pressure ion liquid in a separator.

[0004] The technical solution of the present invention to solve the above problems is:

[0005] The present invention proposes an embedded high-pressure float drain valve, which is installed on a base inside a hydrogen ion liquid separator, and has the following special features:

[0006] It includes a float assembly, a mounting base assembly, a lever assembly, a valve seat assembly, a valve core and a return spring;

[0007] The valve seat assembly and the valve core are assembled in the valve seat socket reserved on the base; the valve seat assembly includes a valve seat and a combined sealing ring, the valve seat assembly is installed in the valve seat socket, and the valve seat socket is divided into a medium inlet located at the upper end of the valve seat and a medium outlet located at the lower end of the valve seat; a second channel for the outflow of ionic liquid is arranged at the center of the valve seat; the valve core is axially movably installed in the valve seat socket and is located at the top of the valve seat, and an outer cone structure is arranged at the bottom of the valve core, the outer cone structure is inserted into the second channel at the center of the valve seat, and the cone and the second channel orifice form a sealing pair, which separates the medium inlet and the medium outlet to achieve valve sealing; a groove for installing the combined sealing ring is arranged on the inner wall of the valve seat socket, and a first channel for the circulation of ionic liquid is arranged on one side of the inner wall; the float assembly, the mounting base assembly, and the lever assembly are used to drive the valve core to move upward, and the reset spring is installed on the top surface of the valve core to realize the reset of the valve core, and finally realize the high liquid level discharge and low liquid level cutoff of the high pressure ionic liquid in the separator.

[0008] Further, the float assembly includes a floating ball, a fixing ring, a pull rod and a connecting rod. The fixing ring is sleeved on the surface of the floating ball, and the fixing ring is pressed on the floating ball through the pull rod and the connecting rod.

[0009] Further, the mounting base assembly is mounted on the separator base; the mounting base assembly includes a support base, a spring guide sleeve, a fixing base I, a fixing base II, and a support spring; the support base includes a first working chamber with an upward opening at the top of the support base and two arc-shaped guide holes at the bottom of the first working chamber; the spring guide sleeve includes a second working chamber with a downward opening at the bottom and two arc-shaped guide pieces at the bottom; the support spring is axially mounted in the second working chamber of the spring guide sleeve; the spring guide sleeve is axially mounted in the first working chamber of the support base, and the two arc-shaped guide pieces of the spring guide sleeve are axially movably mounted in the two arc-shaped guide holes of the support base respectively; the floating ball of the valve float assembly is placed on the top of the spring guide sleeve, and the two can move relative to each other under the action of an external force.

[0010] Further, the support base is connected to the separator base through fasteners.

[0011] Further, the lever assembly includes a primary lever assembly and a secondary lever; the primary lever assembly includes a primary lever, a force-applying rod and a bushing; one end of the primary lever is connected to the pull rod of the float assembly through a pin shaft, the other end of the primary lever is connected to the force-applying rod by welding, the force-applying rod and the bushing are connected through a pin shaft, and the bushing is in contact with the upper surface of one end of the secondary lever.

[0012] Further, the fixing base I and the fixing base II are fixed on the base, and the force-applying rod is mounted on the fixing base II.

[0013] Further, the other end of the secondary lever is connected to the fixing base II through a pin shaft.

[0014] Further, the bottom surface of the valve core end presses on the upper end surface of one end of the secondary lever.

[0015] Further, the upper end of the return spring is sleeved on the convex platform on the top surface of the fixing base II.

[0016] Advantages of the present invention:

[0017] Compared with the current technical status of hydrogen compressors with a maximum pressure of 45 MPa, developing a 90 MPa high-pressure hydrogen compressor is the key to reducing the cost of hydrogen refueling stations. The embedded high-pressure float drain valve of the present invention is one of the key technologies for developing an ultra-high-pressure ionic liquid type liquid piston hydrogen compressor, and is used for the automatic discharge control of ionic liquid during the separation of hydrogen and ionic liquid. In addition, the invention can also be applied to the automatic discharge of liquids in other similar working conditions. Description of the Drawings

[0018] Figure 1 is the structural diagram of the embedded high-pressure float drain valve in the closed state;

[0019] Figure 2 is the installation diagram of the embedded high-pressure float drain valve in the separator;

[0020] Figure 3 is the structural diagram of the embedded high-pressure float drain valve in the open state;

[0021] Figure 4 is the structural diagram of the support seat;

[0022] Figure 5 is the structural diagram of the spring guide sleeve;

[0023] Figure 6 is the structural diagram of the valve seat.

[0024] In the figure:

[0025] Float assembly 1, floating ball 11, fixing ring 12, pull rod 13, connecting rod 14;

[0026] Installation base assembly 2, support seat 21, first working chamber 211, arc-shaped guide hole 212, spring guide sleeve 22, second working chamber 221, arc-shaped guide piece 222, fixing seat I 23, fixing seat II 24, support spring 25;

[0027] First-class lever assembly 3, first-class lever 31, force-applying rod 32, bushing 33;

[0028] Second-class lever 4;

[0029] Valve seat assembly 5, valve seat 51, second channel 511, combined sealing ring 52;

[0030] Valve core 6;

[0031] Return spring 7;

[0032] Base 8, valve seat jack 81, medium inlet 811, medium outlet 812, first channel 813. Detailed implementation manners

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention.

[0034] Referring to Figures 1 to 6 , the present invention provides an embedded high-pressure float drain valve, which includes a float assembly 1, a mounting base assembly 2, a lever assembly, a valve seat assembly 5, a valve core 6, and a return spring 7. The embedded high-pressure float drain valve is installed on the base 8 inside the cylinder of the hydrogen ion liquid separator, and is assembled in cooperation with the threaded mounting holes and valve seat jacks 81 reserved on the base 8. The float assembly 1, the mounting base assembly 2, and the lever assembly are used to drive the valve core 6 to move upward. The return spring 7 is installed on the top surface of the valve core 6 to realize the reset of the valve core 6, so as to achieve the high-level discharge and low-level cut-off of the high-pressure ionic liquid in the separator.

[0035] Specifically, referring to Figure 1 , the float assembly 1 includes a float ball 11, fixing rings 12, a pull rod 13, and a connecting rod 14. Two fixing rings 12 are sleeved on the surface of the float ball 11. The two fixing rings 12 are connected by the connecting rod 14 to press the fixing rings 12 on the float ball. One side of the upper end of the pull rod 13 is connected.

[0036] Specifically, referring to Figure 1 and Figure 2 , the mounting base assembly 2 is installed on the separator base 8 and includes a support seat 21, a spring guide sleeve 22, a fixing seat I 23, a fixing seat II 24, and a support spring 25. Referring to Figure 4 , the support seat 21 includes a first working cavity 211 with an upward opening provided at the top of the support seat and two arc-shaped guide holes 212 provided at the bottom of the first working cavity 211. Referring to Figure 5, the spring guide sleeve 22 includes a second working cavity 221 with a downward opening at the bottom and two arc-shaped guide pieces 222 provided at the bottom. The support spring 25 is axially installed in the second working cavity 221 of the spring guide sleeve 22, the spring guide sleeve 22 is axially installed in the first working cavity 211 of the support seat 21, and the two arc-shaped guide pieces of the spring guide sleeve 22 are axially movably installed in two arc-shaped guide holes 212 of the support seat 21. The support seat 21 is connected to the separator base 8 through a fastener, and the fixed seat I 23 and the fixed seat II 24 are fixed on the base 8. The float 11 of the valve float assembly 1 is placed on the top of the spring guide sleeve 22, and relative movement can occur between the two under the action of an external force.

[0037] When the embedded high-pressure float drain valve is working, when the ionic liquid level is low and the float assembly 1 does not obtain an upward buoyancy force, the valve is in a closed state. At this time, the spring force value F1 of the support spring 25 should be greater than the gravity G of the float assembly 1. It is set that the downward pressing force f1 of the return spring 7 acting on the upper end of the valve core minus the necessary sealing force f2 (i.e., f1 - f2), and then the force F2 acting on the float assembly 1 downward after being amplified and transmitted by the secondary lever 4 and the primary lever assembly 3. It is set that the downward pressing force f1 of the return spring 7 acting on the upper end of the valve core minus the allowable sealing force f3 (i.e., f1 - f3), and then the force F3 acting on the float assembly 1 downward after being amplified and transmitted by the secondary lever 4 and the primary lever assembly 3. Then it is necessary to satisfy F3 < F1 - G < F2. When the valve is opened under the action of buoyancy and during the opening process, the resultant force of the spring force F4 (changing within the stroke range) of the support spring 25 and the buoyancy force F5 should be greater than the resultant force F6 of the gravity G of the float assembly 1 and the high-pressure medium force f4 and the return spring force f5 acting on the valve core 6 (i.e., f4 + f5) after being amplified and transmitted by the secondary lever 4 and the primary lever assembly 3, that is, G + F6 < F4 + F5.

[0038] Specifically, refer to Figure 1 , the lever assembly includes a primary lever assembly 3 and a secondary lever 4. The primary lever assembly 3 includes a primary lever 31, a force application rod 32, and a bushing 33. The primary lever 31 is connected to the lower end of the pull rod 13 of the float assembly 1 through a pin shaft, and the bushing 33 contacts the upper surface of one end of the secondary lever 4. The force application rod 32 is installed on the fixed seat I 23, and the lever 31 and the force application rod 32 are connected by welding, and the force application rod 32 and the bushing 33 are connected by a pin shaft. The ratio of the power arm L1 to the resistance arm L2 of the primary lever assembly 1 is k1.

[0039] Specifically, refer to Figure 1, the other end of the secondary lever 4 is connected to the fixing seat II24 through a pin. The ratio of the power arm L3 to the resistance arm L4 of the secondary lever 4 is k2. The amplification transfer coefficients of the primary lever assembly 3 and the secondary lever 4 are k1 and k2 respectively, and the comprehensive amplification transfer coefficient k=k1*k2, specifically, F2=k*(f1-f2), F3=k*(f1-f3), F6=k*(f4+f5).

[0040] See also Figure 1 The valve seat assembly 5 includes a valve seat 51 and a combined sealing ring 52. The valve seat assembly 5 is installed in the valve seat insertion hole 81, and the valve seat insertion hole 81 is divided into a medium inlet 811 located at the upper end of the valve seat 51 and a medium outlet 812 located at the lower end of the valve seat 51. The center of the valve seat 51 is provided with a second channel 511 for the ion liquid to flow out. The valve core 6 is axially movably installed in the valve seat insertion hole 81 and is located at the top of the valve seat 5. The bottom surface of the valve core 6 is pressed on the upper end surface of one end of the secondary lever 4. Figure 2 , Figure 3 and Figure 6 The bottom of the valve core 6 is provided with an outer cone structure, and the outer cone part is inserted into the second channel 511 at the center of the valve seat 51. The cone and the opening of the second channel 511 form a sealing pair to separate the medium inlet 811 and the medium outlet 812 to achieve valve sealing.

[0041] See also Figure 1 The bottom of the return spring 7 is installed in the groove on the top surface of the valve core 6, and the upper end of the return spring 7 is sleeved on the boss on the top surface of the fixed seat II24. Figure 3 The inner wall of the valve seat insertion hole 81 is provided with a groove for installing the combined sealing ring 52. In addition, a first channel 813 for the circulation of the ionic liquid is provided on one side of the inner wall.

[0042] The working principle of the embedded high-pressure float drain valve proposed by the present invention is as follows:

[0043] The embedded high-pressure float drain valve is installed at the bottom of the hydrogen ion liquid separator, and the installation space is a cylinder with a diameter of 100mm and a height of 250mm. The embedded high-pressure float drain valve is immersed in the high-pressure ion liquid as a whole, and is in direct contact with the high-pressure hydrogen and ion liquid. After being compressed by the ultra-high-pressure ion liquid type liquid piston hydrogen compressor, the hydrogen carries part of the ion liquid and enters the separator from the hydrogen inlet. After being separated from the ion liquid inside the separator, it is discharged from the hydrogen outlet, and the ion liquid gathers at the bottom of the separator. Figure 2 The valve core 6 is pressed against the valve seat 51 under the action of the return spring and the high-pressure medium force, cutting off the medium inlet 811 and the medium outlet 812, and the valve is in a closed state.

[0044] As more and more ionic liquid is separated from hydrogen, the ionic liquid accumulates at the bottom of the separator. As the liquid level rises, since the density of the ionic liquid is greater than that of the high-pressure hydrogen, when the liquid level reaches the bottom of the float assembly, the float assembly 1 obtains an upward buoyancy force. Refer to Figure 3 , through the transmission of the first-level lever assembly 3 and the second-level lever 4, when the force-applying lever 32 rotates clockwise, it drives the bushing 33 to move downward. The bushing 33 presses down the right end of the second-level lever 4, and the second-level lever 4 rotates clockwise around the pin shaft at the left end, applying an upward force to the bottom surface of the end of the valve core 6. As the liquid level continues to rise, the buoyancy force obtained by the float assembly increases. When it reaches a certain value, the valve core moves upward against the medium pressure and the pressing force of the return spring 7. The ionic liquid enters the separator outlet through the first channel 511, the medium inlet 811, the second channel 511, and the medium outlet 812, causing the ionic liquid in the separator to flow out. The liquid level drops, and the buoyancy force acting on the float assembly 1 also drops accordingly. The force transmitted to the bottom surface of the end of the valve core 6 through the first-level lever assembly 3 and the second-level lever 4 also decreases until this force is not sufficient to overcome the medium pressure and the pressing force of the return spring 7. Refer to Figure 2 , the valve core 6 moves downward, and the conical surface of the valve core 6 presses tightly at the orifice of the second channel 511, cutting off the medium inlet 811 and the medium outlet 812, and the valve closes, and the ionic liquid stops flowing out.

[0045] The above are only embodiments of the present invention, and do not limit the protection scope of the present invention. Any equivalent structural or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied to other related system fields, shall be similarly included in the protection scope of the present invention.

Claims

1. An embedded high-pressure float drain valve, which is installed on a base (8) inside a hydrogen ion liquid separator, characterized in that: It comprises a float assembly (1), a mounting base assembly (2), a lever assembly, a valve seat assembly (5), a valve core (6) and a return spring (7); The valve seat assembly (5) and the valve core (6) are assembled in cooperation with the valve seat insertion hole (81) reserved on the base (8). The valve seat assembly (5) comprises a valve seat (51) and a combined sealing ring (52); the valve seat assembly (5) is installed in the valve seat insertion hole (81) to divide the valve seat insertion hole (81) into a medium inlet (811) located at the upper end of the valve seat (51) and a medium outlet (812) located at the lower end of the valve seat (51); a second channel (511) for the ion liquid to flow out is arranged at the center of the valve seat (51); The valve core (6) is axially movably installed in the valve seat insertion hole (81) and is located on the top of the valve seat (5). The bottom of the valve core (6) is provided with an outer conical surface structure, which is inserted into the second channel (511) at the center of the valve seat (51). The conical surface and the orifice of the second channel (511) form a sealing pair, which separates the medium inlet (811) and the medium outlet (812) to achieve valve sealing; The inner wall of the valve seat insertion hole (81) is provided with a groove for installing the combined sealing ring (52), and in addition, a first channel (813) for the circulation of the ionic liquid is provided on one side of the inner wall; The float assembly (1), the mounting base assembly (2), and the lever assembly are used to drive the valve core (6) to move upwards, and the reset spring (7) is installed on the top surface of the valve core (6) to reset the valve core (6), thereby ultimately achieving high liquid level discharge and low liquid level cutoff of the high-pressure ionic liquid in the separator.

2. The embedded high-pressure float drain valve according to claim 1, characterized in that: The float assembly (1) comprises a floating ball (11), a fixing ring (12), a pull rod (13) and a connecting rod (14); the fixing ring (12) is sleeved on the surface of the floating ball (11), and the fixing ring (12) is pressed against the floating ball by the pull rod (13) and the connecting rod (14).

3. The embedded high-pressure float drain valve according to claim 2, characterized in that: The mounting base assembly (2) is mounted on the separator base (8); The mounting base assembly (2) comprises a support seat (21), a spring guide sleeve (22), a fixing seat I (23), a fixing seat II (24), and a supporting spring (25); The support seat (21) comprises a first working cavity (211) which is arranged on the top of the support seat and is open upward, and two arc-shaped guide holes (212) which are arranged on the bottom of the first working cavity (211); The spring guide sleeve (22) comprises a second working chamber (221) arranged at the bottom and open downward, and two arc-shaped guide pieces (222) arranged at the bottom; the support spring (25) is axially mounted in the second working chamber (221) of the spring guide sleeve (22); The spring guide sleeve (22) is axially installed in the first working chamber (211) of the support seat (21). Two arc-shaped guide pieces of the spring guide sleeve (22) are axially movably installed in two arc-shaped guide holes (212) of the support seat (21) respectively; The float ball (11) of the valve float assembly (1) is placed on the top of the spring guide sleeve (22), and the two can move relative to each other under the action of an external force.

4. An embedded high-pressure float drain valve according to claim 3, characterized in that: The support seat (21) is connected to the separator base (8) through a fastener.

5. An embedded high-pressure float drain valve according to claim 4, characterized in that: The lever assembly includes a primary lever assembly (3) and a secondary lever (4); The primary lever assembly (3) includes a primary lever (31), a force-applying lever (32) and a bushing (33); one end of the primary lever (31) is connected to the pull rod of the float assembly (1) through a pin shaft, the other end of the primary lever (31) is connected to the force-applying lever (32), the force-applying lever (32) and the bushing (33) are connected through a pin shaft, and the bushing (33) contacts the upper surface of one end of the secondary lever (4).

6. An embedded high-pressure float drain valve according to claim 5, characterized in that: The fixing seat I (23) and the fixing seat II (24) are fixed on the base (8), and the force-applying lever (32) is installed on the fixing seat II (24).

7. An embedded high-pressure float drain valve according to claim 6, characterized in that: The other end of the secondary lever (4) is connected to the fixing seat II (24) through a pin shaft.

8. An embedded high-pressure float drain valve according to claim 7, characterized in that: The bottom surface of the end of the valve core (6) presses on the upper end surface of one end of the secondary lever (4).

9. An embedded high-pressure float drain valve according to claim 8, characterized in that: The upper end of the return spring (7) is sleeved on the convex platform on the top surface of the fixing seat II (24), and the bottom end of the return spring (7) is installed in the groove on the top surface of the valve core (6).

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