Hydrogen production electromagnetic valve

Abstract

The utility model relates to the field of electromagnetic valves, in particular to a hydrogen production electromagnetic valve which comprises a valve body, a sleeve with one end arranged on the valve body, a coil arranged on the sleeve in a sleeving mode, an armature arranged in the sleeve, a valve rod arranged at the end, facing the valve body, of the armature and an elastic piece arranged at the other end of the armature. The armature moves to drive the valve rod to open or close the valve body, and an outlet of the valve body is detachably connected with a hole plate. The electromagnetic valve has the effects that the practicability of the electromagnetic valve is improved, and the requirements for pressure and flow required by various hydrogen production equipment use scenes are met.

Description

Technical Field

[0001] This application relates to the field of solenoid valves, and in particular, to a hydrogen production solenoid valve. Background Art

[0002] As a clean and efficient power device, fuel cell technology is a chemical device that directly converts the chemical reaction of hydrogen and oxygen into electrical energy. It can be used in various fields of production and life, and its by-product is only water, which is a clean technology. On the existing hydrogen production system pipelines, manual valves are required to control the pipeline flow rate to meet the processing requirements of the hydrogen production system. However, the control of manual valves is relatively cumbersome; and during hydrogen production, the valves also need to meet the hydrogen usage environment, have explosion-proof functions, and at the same time need to meet multiple pressure and flow rate usage requirements. There is no valve on the existing market that meets the above requirements. Summary of the Utility Model

[0003] In order to improve the practicability of the solenoid valve and meet the pressure and flow rate requirements for various hydrogen production equipment usage scenarios, this application provides a hydrogen production solenoid valve.

[0004] A hydrogen production solenoid valve provided by this application adopts the following technical solutions:

[0005] A hydrogen production solenoid valve includes a valve body, a sleeve disposed at one end on the valve body, a coil sleeved on the sleeve, an armature disposed in the sleeve, a valve stem disposed at the end of the armature facing the valve body, and an elastic member disposed at the other end of the armature. The coil is used to control the movement of the armature, and the movement of the armature drives the valve stem to open or close the valve body. The outlet of the valve body is detachably connected with an orifice plate.

[0006] By adopting the above technical solutions, the coil has explosion-proof performance. The coil controls the movement of the armature by energizing and de-energizing. The movement of the armature drives the valve stem to open or close the valve body. The elastic member is used to drive the armature to move towards the valve body outlet to close the valve body when the coil is de-energized. The orifice plate is detachable, which is convenient for the staff to replace the orifice plate with a corresponding aperture according to the medium flow rate required by the system, without having to redesign and modify the aperture of the valve body. The same valve body can be used to adapt to different flow rate requirements.

[0007] Preferably, an installation groove for installing the sleeve and communicating with the valve port of the valve body is opened on the valve body. The valve stem is located in the installation groove. The valve stem is used to control the opening and closing of the valve port of the valve body. The outer side wall of the sleeve is provided with external threads, and the side wall of the installation groove is provided with internal threads adapted to the external threads.

[0008] By adopting the above technical solutions, the installation groove is used to install the sleeve. The installation groove communicates with the valve port of the valve body, which is convenient for the valve stem to control the opening and closing of the valve body and for the medium to enter. The sleeve and the valve body are connected by threads, which improves the installation or disassembly efficiency of the sleeve and the valve body.

[0009] Preferably, a sliding groove communicating with the installation groove is formed in the sleeve along the length direction, the armature is located in the sliding groove, a first positioning groove for positioning the valve rod is formed at one end of the armature facing the valve port of the valve body, and a second positioning groove for positioning the elastic member is formed at the other end of the armature.

[0010] By adopting the above technical solution, the sliding groove is used for the coil to control the movement of the armature, and the first positioning groove is used for positioning the valve rod, facilitating the armature to control the movement of the valve rod; the second positioning groove is used for positioning the elastic member, improving the stability when the elastic member is driven.

[0011] Preferably, a first exhaust hole communicating with the first positioning groove and the second positioning groove is formed in the armature along the length direction, an exhaust groove communicating with the first exhaust hole is formed in the valve rod along the length direction, a second exhaust hole communicating with the exhaust groove is formed in the side wall of the valve rod, and the second exhaust hole communicates with the installation groove.

[0012] By adopting the above technical solution, the first exhaust hole, the exhaust groove and the second exhaust hole are used to reduce the influence of the internal gas on the armature when the armature moves.

[0013] Preferably, a positioning block is provided at one end of the sleeve away from the valve body, a through hole for the positioning block to pass through is formed in the coil, a nut is provided on the positioning block, an external thread adapted to the nut is formed on the outer side wall of the positioning block, a convex platform is provided on the outer side wall of the end of the sleeve away from the nut, and the side of the convex platform facing the coil is in close contact with the coil.

[0014] By adopting the above technical solution, the positioning block is used for installing the nut. When the nut is tightened, the coil is squeezed and closely attached to the convex platform, improving the stability between the coil and the sleeve.

[0015] Preferably, a sealing ring is provided at the connection between the sleeve and the valve body.

[0016] By adopting the above technical solution, the sealing ring improves the sealing performance between the sleeve and the valve body.

[0017] Preferably, a sealing gasket is provided on the side of the valve rod facing the valve port of the valve body.

[0018] By adopting the above technical solution, the sealing gasket improves the sealing effect of the valve rod for closing the outlet of the valve body.

[0019] Preferably, a wear-resistant coating is provided on the side wall of the armature.

[0020] By adopting the above technical solution, the wear-resistant coating extends the service life of the armature; and at the same time reduces the friction force during the movement of the armature.

[0021] In summary, the coil has explosion-proof performance, improving the safety of the solenoid valve on the pipeline of the hydrogen production system; the orifice plate is convenient for replacement according to the required flow rate of the system pipeline, improving the adaptability of the solenoid valve and reducing the use cost. Description of the Drawings

[0022] Figure 1 It is a schematic structural diagram of a hydrogen production solenoid valve of the present application.

[0023] Description of the reference numerals: 1, valve body; 111, valve port; 2, sleeve; 3, coil; 4, armature; 5, valve stem; 6, elastic member; 7, installation groove; 8, sliding groove; 9, first positioning groove; 10, second positioning groove; 11, first exhaust hole; 12, exhaust groove; 13, second exhaust hole; 14, positioning block; 15, through hole; 16, nut; 17, boss; 18, sealing ring; 19, gasket; 20, orifice plate; 21, air magnetic isolation space. Detailed Description of the Embodiments

[0024] The following will further elaborate on the present application in conjunction with the attached Figure 1 drawings.

[0025] An embodiment of the present application discloses a hydrogen production solenoid valve. Referring to Figure 1 , it includes a valve body 1, a coil 3, a sleeve 2 installed inside the coil 3 and connected to the valve body 1 at its end, an armature 4 installed inside the sleeve 2, a valve stem 5 installed on the armature 4 and used to control the opening and closing of the valve body 1, and an elastic member 6 installed inside the sleeve 2. The valve stem 5 is located at one end of the armature 4 facing the valve port 111 of the valve body 1, and the elastic member 6 is located at the other end of the armature 4. On one side of the valve body 1 facing the sleeve 2, there is an installation groove 7 for installing the sleeve 2. The installation groove 7 communicates with the valve port 111 of the valve body 1, facilitating the armature 4 and the valve stem 5 to control the opening or closing of the valve body 1. The inner wall of the installation groove 7 is provided with internal threads, and the outer wall of the sleeve 2 is provided with external threads adapted to the internal threads. The sleeve 2 and the valve body 1 are connected by threads, facilitating the installation or disassembly of the sleeve 2. In order to improve the connection sealing performance between the sleeve 2 and the valve body 1, a sealing ring 18 is sleeved at the connection between the sleeve 2 and the valve body 1.

[0026] Referring to Figure 1 , the sleeve 2 is provided with a sliding groove 8 along its length direction. The armature 4 is located inside the sliding groove 8. One end of the sliding groove 8 facing the valve body 1 is open and the sliding groove 8 communicates with the installation groove 7, facilitating the armature 4 to move towards the installation groove 7 to close the valve port 111 of the valve body 1. The side wall of the armature 4 is coated with a wear-resistant coating. In the embodiment of the present application, the wear-resistant coating is a Teflon coating. By utilizing the wear resistance and self-lubricating performance of the surface of the Teflon coating, the friction force during the movement of the armature 4 is effectively reduced, increasing the service life of the armature 4.

[0027] Referring to Figure 1The end of the armature 4 facing the valve port 111 of the valve body 1 is provided with a positioning groove 1 9 for positioning the valve stem 5, so as to improve the stability of the valve stem 5 on the armature 4. The end of the armature 4 away from the valve body 1 is provided with a positioning groove 2 10, which is used to position the elastic member 6. The sleeve 2 is provided with a positioning groove 3, one end of the elastic member 6 is located in the positioning groove 3, and the other end of the elastic member 6 is located in the positioning groove 2 10.

[0028] Reference Figure 1 When the coil 3 is powered off, the spring force applied by the elastic member 6 presses the armature 4 and the valve stem 5 tightly against the valve port 111 of the valve body 1, thereby closing the valve; in order to improve the sealing effect of the valve stem 5, a sealing gasket 19 is installed on the side of the valve stem 5 facing the valve port 111 of the valve body 1. When the coil 3 is powered on, the electromagnetic force overcomes the spring force and the medium force (the force caused by the pressure difference between the inlet and outlet), and drives the armature 4 toward the elastic member 6 until the armature 4 and the sleeve 2 are attracted, thereby opening the valve, and the medium flows from the inlet of the valve body 1 to the outlet. A removable orifice plate 20 is installed at the outlet of the valve body 1, and the orifice plate 20 is located on the outlet side of the fluid. When different medium flow rates are required, the target flow rate can be achieved by replacing orifice plates 20 with different apertures, and the orifice plate 20 is easy to install or remove.

[0029] Reference Figure 1 Compared with the prior art where the static iron core and the pipe for the armature to slide are prepared separately and welded together, the sleeve 2 of the present application is formed in one piece, which can not only play the role of the static iron core, but also provide a space for the armature 4 to slide, effectively simplifying the product structure and reducing the welding process. When the coil 3 is energized, the electromagnetic force overcomes the spring force of the elastic member 6, driving the armature 4 to move from the sealing position of the sealing valve port 111 to the valve opening position close to the sleeve 2. In order to reduce the resistance of the gas in the air magnetic isolation space 21 to the movement of the armature 4, the armature 4 is provided with an exhaust hole 11 along the length direction, one end of the exhaust hole 11 is connected to the positioning groove 9, and the other end of the exhaust hole 11 is connected to the positioning groove 2 10; the valve stem 5 is provided with an exhaust groove 12 connected to the exhaust hole 11 along the length direction, and the side wall of the valve stem 5 is provided with an exhaust hole 2 13 connected to the exhaust groove 12, and the exhaust hole 2 13 is connected to the mounting groove 7, so as to facilitate the gas in the air magnetic isolation space 21 to be squeezed into the mounting groove 7, thereby reducing the air in the air magnetic isolation space 21 from forming an air spring, which brings resistance to the upward moving armature 4.

[0030] Reference Figure 1, in order to improve the installation stability between the coil 3 and the sleeve 2, a positioning block 14 is installed at one end of the sleeve 2 away from the valve body 1. A through hole 15 is formed in the coil 3. The positioning block 14 passes through the through hole 15. External threads are provided on the side wall of the positioning block 14 located outside the coil 3, and a nut 16 adapted to the external threads is installed on the positioning block 14. In the embodiment of the present application, the positioning block 14 and the sleeve 2 are integrally formed. In order to cooperate with the locking and positioning of the nut 16, a boss 17 is provided on the outer side wall of one end of the sleeve 2 away from the positioning block 14. In the present embodiment, the boss 17 and the sleeve 2 are integrally formed. The boss 17 is located between the coil 3 and the valve body 1. The side of the boss 17 facing the coil 3 is in close contact with the bottom surface of the coil 3. After the nut 16 is installed, it abuts against the top surface of the coil 3. The boss 17 and the nut 16 cooperate to improve the connection stability between the coil 3 and the sleeve 2.

[0031] The advantages of the present application are as follows: The sleeve 2 is integrally provided, which not only serves as the static iron core but also provides a sliding space for the armature 4; The side wall of the armature 4 is coated with a wear-resistant coating to reduce the friction force during the movement of the armature 4 and extend the service life of the armature 4; The orifice plate 20 facilitates replacing the orifice plates 20 with different orifice diameters according to the system's requirements for the medium flow rate. Without preparing redundant solenoid valves, the target flow rate can be achieved, improving the adaptability of the solenoid valve.

[0032] The above are all the 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 hydrogen production solenoid valve, characterized in that: It includes a valve body (1), a sleeve (2) with one end arranged on the valve body (1), a coil (3) sleeved on the sleeve (2), an armature (4) arranged in the sleeve (2), a valve rod (5) arranged at one end of the armature (4) facing the valve body (1), and an elastic member (6) arranged at the other end of the armature (4). The coil (3) is used to control the movement of the armature (4), and the movement of the armature (4) drives the valve rod (5) to open or close the valve body (1). The outlet of the valve body (1) is detachably connected with an orifice plate (20).

2. The hydrogen production solenoid valve according to claim 1, wherein: An installation groove (7) for installing the sleeve (2) and communicating with the valve port (111) of the valve body (1) is formed on the valve body (1). The valve rod (5) is located in the installation groove (7). The valve rod (5) is used to control the opening and closing of the valve port (111) of the valve body (1). External threads are formed on the outer side wall of the sleeve (2), and internal threads adapted to the external threads are formed on the side wall of the installation groove (7).

3. The hydrogen production solenoid valve according to claim 2, wherein: A sliding groove (8) communicating with the installation groove (7) is formed in the sleeve (2) along the length direction. The armature (4) is located in the sliding groove (8). A first positioning groove (9) for positioning the valve rod (5) is formed at one end of the armature (4) facing the valve port (111) of the valve body (1), and a second positioning groove (10) for positioning the elastic member (6) is formed at the other end of the armature (4).

4. The hydrogen production solenoid valve according to claim 3, characterized in that: An exhaust hole one (11) communicating with the first positioning groove (9) and the second positioning groove (10) is formed in the armature (4) along the length direction. An exhaust groove (12) communicating with the exhaust hole one (11) is formed in the valve rod (5) along the length direction. An exhaust hole two (13) communicating with the exhaust groove (12) is formed on the side wall of the valve rod (5). The exhaust hole two (13) communicates with the installation groove (7).

5. The hydrogen production solenoid valve according to claim 1, characterized in that: A positioning block (14) is arranged at one end of the sleeve (2) away from the valve body (1). A through hole (15) for the positioning block (14) to pass through is formed in the coil (3). A nut (16) is arranged on the positioning block (14). External threads adapted to the nut (16) are formed on the outer side wall of the positioning block (14). A boss (17) is arranged on the outer side wall of the end of the sleeve (2) away from the nut (16). The side of the boss (17) facing the coil (3) is in close contact with the coil (3).

6. The hydrogen production solenoid valve according to claim 1, characterized in that: A sealing ring (18) is arranged at the connection between the sleeve (2) and the valve body (1).

7. A hydrogen production solenoid valve according to claim 1, characterized in that: A gasket (19) is arranged on the side of the valve rod (5) facing the valve port (111) of the valve body (1).

8. The hydrogen production solenoid valve according to claim 1, characterized in that: A wear-resistant coating is arranged on the side wall of the armature (4).

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