Hydrogen proportional electromagnetic valve

Abstract

The utility model belongs to the technical field of electromagnetic valves, and particularly relates to a hydrogen proportional electromagnetic valve which comprises a valve body, a mounting cavity, a first air inlet hole, a second air inlet hole and an air outlet hole are formed in the valve body, the first air inlet hole, the second air inlet hole and the air outlet hole are communicated with the mounting cavity, a valve seat body is fixedly connected into the mounting cavity, and a valve seat inner cavity is formed in the valve seat body. A valve seat air inlet and a valve seat air outlet which are communicated with the valve seat inner cavity are formed in the valve seat body, the first air inlet hole and the second air inlet hole are both communicated with the valve seat air inlet, the valve seat air outlet is communicated with the air outlet hole, a valve element assembly is vertically and slidably connected to the interior of the valve seat body, and a coil assembly is fixedly connected to the upper side of the valve body. A spring is fixedly connected in the coil assembly and located at the end, away from the coil assembly, of the magnetic steel sleeve assembly. According to the utility model, through dynamic coupling of elastic force and electromagnetic force, the electromagnetic valve has a linear proportional flow control function.

Description

Technical Field

[0001] This utility model belongs to the field of electromagnetic valve technology, and specifically relates to a hydrogen proportional electromagnetic valve. Background Technology

[0002] Currently, most solenoid valves on the market are of the on / off type (fully open / fully closed) structure, which directly drives the valve core through electromagnetic force to achieve fluid flow on / off, and cannot precisely regulate the flow rate. With the development of industrial automation and new energy technologies (such as hydrogen energy systems), the requirements for the precision of fluid control are increasing, and traditional on / off type solenoid valves can no longer meet the needs of linear proportional control;

[0003] In hydrogen energy applications, hydrogen flow needs to be adjusted in real time according to operating conditions (such as dynamic gas supply in fuel cell systems). Traditional solenoid valves cannot achieve linear matching between flow rate and electrical signal. Utility Model Content

[0004] The purpose of this invention is to provide a hydrogen proportional solenoid valve that can ensure the solenoid valve has the function of linear proportional flow control through the dynamic coupling of elastic force and electromagnetic force.

[0005] The specific technical solution adopted by this utility model is as follows:

[0006] A hydrogen proportional solenoid valve includes a valve body, wherein the valve body has an internal mounting cavity and a first air inlet, a second air inlet, and an air outlet communicating with the mounting cavity.

[0007] A valve seat body is fixedly connected inside the mounting cavity. A valve seat cavity is opened inside the valve seat body. A valve seat air inlet and a valve seat air outlet are opened on the valve seat body and are connected to the valve seat cavity. The first air inlet and the second air inlet are both connected to the valve seat air inlet. The valve seat air outlet and the air outlet are connected.

[0008] A valve core assembly is vertically slidably connected inside the valve seat body, and a coil assembly is fixedly connected to the upper side of the valve body. A spring is fixedly connected inside the coil assembly and at the end of the magnet sleeve assembly away from the coil assembly.

[0009] Furthermore, the coil assembly includes an outer sleeve fixedly connected to the upper side of the valve body, a frame fixedly connected to the inner wall of the outer sleeve, and an upper plate, a bottom plate, and a coil located between the upper plate and the bottom plate fixedly connected to the inner wall of the frame.

[0010] Furthermore, the valve core assembly includes a positioning pin movably installed inside the coil assembly. The positioning pin abuts against a spring. A valve core magnet is fixedly connected to the end of the positioning pin away from the spring. A guide rod is fixedly connected to the end of the valve core magnet away from the positioning pin. The guide rod is slidably connected inside the valve seat cavity. A valve disc is fixedly connected to the end of the guide rod away from the valve core magnet.

[0011] Furthermore, a magnet sleeve assembly located outside the valve core magnet is fixedly connected inside the coil assembly and valve body assembly. The magnet sleeve assembly includes an upper magnet sleeve, a magnetic isolation ring, and a lower magnet sleeve. The upper magnet sleeve is fixedly connected inside the coil assembly, the lower magnet sleeve is fixedly connected inside the coil assembly and valve body assembly, and the magnetic isolation ring is fixedly connected between the upper magnet sleeve and the lower magnet sleeve.

[0012] Furthermore, one end of the outer sleeve has a through hole, and one end of the upper magnet sleeve has a threaded portion. The threaded portion extends through the through hole to the outside of the outer sleeve, and a magnetic shielding nut located on the outside of the outer sleeve is fixedly connected to the outside of the threaded portion. A cap is fixedly connected to the outside of the magnetic shielding nut.

[0013] Furthermore, an upper guide sleeve is fixedly connected inside the upper magnetic sleeve, the positioning pin is slidably connected inside the upper guide sleeve, a lower guide sleeve is fixedly connected inside the valve seat body, and the guide rod is slidably connected inside the lower guide sleeve.

[0014] Furthermore, the valve body is fixedly connected to the upper side of the coil assembly, the valve disc is located on the upper side of the guide rod, the valve seat air inlet is located on the upper side of the guide rod, and the upper end of the valve disc is provided with a pointed tip.

[0015] The technical effects achieved by this utility model are as follows:

[0016] The present invention discloses a hydrogen proportional solenoid valve that generates electromagnetic force through the coil assembly. The electromagnetic force acts on the valve core assembly, causing the valve core assembly to move and control the opening and closing of the valve. At the same time, the spring inside the solenoid valve generates elastic force with the displacement of the valve core assembly. The elastic force and the electromagnetic force are dynamically coupled, thereby ensuring that the solenoid valve has the function of linear proportional flow control. Attached Figure Description

[0017] Figure 1 This is a cross-sectional structural diagram of Embodiment 1 of this utility model;

[0018] Figure 2 This is a cross-sectional structural diagram of the coil assembly in Embodiment 1 of this utility model;

[0019] Figure 3 This is a cross-sectional structural diagram of the valve core assembly in Embodiment 1 of this utility model;

[0020] Figure 4 This is a cross-sectional structural diagram of the magnet sleeve assembly in Embodiment 1 of this utility model;

[0021] Figure 5 This is a cross-sectional structural diagram of Embodiment 2 of this utility model;

[0022] Figure 6 This is a utility model Figure 5 A schematic diagram of the improved structure at point A.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Coil assembly; 11. Outer sleeve; 12. Coil; 13. Upper plate; 14. Frame; 15. Base plate; 2. Valve core assembly; 21. Valve core magnet; 22. Guide rod; 23. Positioning pin; 24. Valve disc; 25. Tip; 3. Magnet sleeve assembly; 31. Upper magnet sleeve; 32. Magnetic isolation ring; 33. Lower magnet sleeve; 4. Cap; 5. Magnetic isolation nut; 6. Upper guide sleeve; 7. Lower guide sleeve; 8. Valve seat body; 81. Valve seat air inlet; 82. Valve seat inner cavity; 83. Valve seat air outlet; 9. Valve body; 91. First air inlet; 92. Second air inlet; 93. Air outlet; 94. Mounting cavity; 10. Spring. Detailed Implementation

[0025] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0026] Example 1:

[0027] like Figures 1-4 As shown, a hydrogen proportional solenoid valve includes a valve body 9. The valve body 9 has an installation cavity 94 and a first air inlet 91, a second air inlet 92, and an air outlet 93 connected to the installation cavity 94. Hydrogen enters the installation cavity 94 through the first air inlet 91 or the second air inlet 92 and then exits through the air outlet 93.

[0028] To better control the flow of hydrogen, this technical solution includes a valve seat body 8 fixedly connected inside the mounting cavity 94. A sealing ring is fixedly connected between the valve seat body 8 and the inner wall of the mounting cavity 94 to ensure sealing. The valve seat body 8 has an inner cavity 82. The valve seat body 8 has a valve seat inlet 81 and a valve seat outlet 83 that communicate with the inner cavity 82. The first inlet hole 91 and the second inlet hole 92 are both connected to the valve seat inlet 81. Hydrogen can enter the inner cavity 82 through the valve seat inlet 81. The valve seat outlet 83 is connected to the outlet hole 93. Hydrogen enters the outlet hole 93 through the valve seat outlet 83 and then exits.

[0029] To control the flow of hydrogen, a valve core assembly 2 is vertically slidably connected inside the valve seat body 8. When the valve core assembly 2 moves to abut against the valve seat inlet 81, it seals the valve seat inlet 81, stopping the flow of hydrogen and closing the valve. When the valve core assembly 2 moves to separate from the valve seat inlet 81, the hydrogen inside the valve seat inlet 81 can flow through the gap between the valve core assembly 2 and the valve seat inlet 81, opening the valve. The larger the gap between the valve core assembly 2 and the valve seat inlet 81, the greater the flow rate of hydrogen. Thus, by moving the valve core assembly 2, stepless control of fluid parameters can be achieved.

[0030] To achieve stepless adjustment of the position of the valve core assembly 2, this technical solution has a coil assembly 1 fixedly connected to the upper side of the valve body 9. A spring 10 is fixedly connected inside the coil assembly 1 and at the end of the magnet sleeve assembly 3 away from the coil assembly 1. The coil assembly 1 can generate electromagnetic force, which acts on the valve core assembly 2 to cause the valve core assembly 2 to move and control the opening and closing of the valve. At the same time, the spring 10 inside the solenoid valve generates elastic force with the displacement of the valve core assembly 2. The elastic force and the electromagnetic force are dynamically coupled, thereby ensuring that the solenoid valve has the function of linear proportional control of flow.

[0031] Unlike ordinary solenoid valves, which typically have only two states—fully open and fully closed—proportional solenoid valves can achieve continuous control across multiple intermediate states between fully open and fully closed. For example, based on different strengths of the input electrical signal, it can precisely adjust the flow rate or pressure of the fluid, achieving stepless control of fluid parameters.

[0032] Ideally, its output fluid parameters (such as flow rate and pressure) have a good linear relationship with the input electrical signal. That is, when the electrical signal changes by a certain proportion, the fluid parameters will also change by approximately the same proportion. This makes it very useful in many applications that require precise fluid control. It has the characteristics of fast response, good linear adjustment capability, and long life.

[0033] like Figures 1-2As shown, the coil assembly 1 includes an outer sleeve 11 fixedly connected to the upper side of the valve body 9. A frame 14 is fixedly connected to the inner wall of the outer sleeve 11. An upper plate 13, a bottom plate 15, and a coil 12 located between the upper plate 13 and the bottom plate 15 are fixedly connected to the inner wall of the frame 14. At this time, the external circuit of the solenoid valve generates electromagnetic force through the coil 12. The electromagnetic force acts on the valve core assembly 2, causing the valve core assembly 2 to generate displacement to control the opening and closing of the valve. At the same time, the spring 10 inside the solenoid valve generates elastic force with the displacement of the valve core assembly 2. The elastic force and the electromagnetic force are dynamically coupled, thereby ensuring that the solenoid valve has the function of linear proportional control of flow rate.

[0034] Among them, such as Figures 1-3 As shown, the valve core assembly 2 includes a positioning pin 23 movably installed inside the coil assembly 1. The positioning pin 23 abuts against the spring 10, allowing the spring 10 to apply an elastic thrust to the positioning pin 23. A valve core magnet 21 is fixedly connected to the end of the positioning pin 23 away from the spring 10. The electromagnetic force of the coil 12 acts on the valve core magnet 21, completing the movement of the valve core magnet 21. A guide rod 22 is fixedly connected to the end of the valve core magnet 21 away from the positioning pin 23. The guide rod 22 is slidably connected inside the valve seat cavity 82 to guide the sliding path of the valve core assembly 2. A valve disc 24 is fixedly connected to the end of the guide rod 22 away from the valve core magnet 21. By moving the valve disc 24, the distance between the valve disc 24 and the valve seat inlet 81 can be adjusted, thereby controlling the flow rate of the fluid.

[0035] like Figures 1-4 As shown, in order to concentrate the electromagnetic force generated by the coil 12 onto the valve core assembly 2, this technical solution has a magnet sleeve assembly 3 located outside the valve core magnet 21 fixedly connected inside the coil assembly 1 and valve body 9 assembly. The magnet sleeve assembly 3 includes an upper magnet sleeve 31, a magnetic isolation ring 32, and a lower magnet sleeve 33. The upper magnet sleeve 31 is fixedly connected inside the coil assembly 1, the lower magnet sleeve 33 is fixedly connected inside the coil assembly 1 and valve body 9 assembly, and the magnetic isolation ring 32 is fixedly connected between the upper magnet sleeve 31 and the lower magnet sleeve 33.

[0036] In order to fix the magnet sleeve assembly 3, one end of the outer sleeve 11 is provided with a through hole, and one end of the upper magnet sleeve 31 is provided with a threaded part. The threaded part extends through the through hole to the outside of the outer sleeve 11, and the outer side of the threaded part is fixedly connected to the magnetic shielding nut 5 located on the outside of the outer sleeve 11. The fixing method can be threaded connection. The outer side of the magnetic shielding nut 5 can be fixedly connected to the cap 4, which can also be fixedly connected by a threaded connection. A sealing ring can be fixedly connected between the cap 4 and the outer sleeve 11.

[0037] At the same time, such as Figure 1 and Figure 3As shown, in order to guide the valve core assembly 2, an upper guide sleeve 6 is fixedly connected inside the upper magnet sleeve 31, a positioning pin 23 is slidably connected inside the upper guide sleeve 6, a lower guide sleeve 7 is fixedly connected inside the valve seat body 8, and a guide rod 22 is slidably connected inside the lower guide sleeve 7. By setting the upper guide sleeve 6 and the lower guide sleeve 7, the valve core assembly 2 can be guided relatively well.

[0038] Example 2:

[0039] This embodiment further defines the structure of the hydrogen proportional solenoid valve based on Embodiment 1, as follows: Figure 5 As shown, the valve body 9 is fixedly connected to the upper side of the coil assembly 1, so that the valve disc 24 is located on the upper side of the guide rod 22, and the valve seat air inlet 81 is located on the upper side of the guide rod 22.

[0040] Meanwhile, to reduce the phenomenon of impurity particles clogging between the valve seat inlet 81 and the valve disc 24, affecting the complete closure of the valve disc 24, this technical solution improves the structure of the valve disc 24, specifically as follows: Figure 6 As shown, a tip 25 is provided at the upper end of the valve disc 24. The tip 25 forms an inclined surface on the upper side of the valve disc 24. During use, impurity particles between the valve seat air inlet 81 and the valve disc 24 will fall onto the tip 25 under the action of gravity, and then move along the inclined surface of the tip 25. This removes the impurity particles between the valve seat air inlet 81 and the valve disc 24, reducing the phenomenon of impurity particles blocking the valve seat air inlet 81 and the valve disc 24 and affecting the complete closure of the valve disc 24.

[0041] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A hydrogen proportional solenoid valve characterized by: It includes valve body (9), the inside of valve body (9) is provided with installation cavity (94) and first air inlet hole (91) communicated with installation cavity (94), second air inlet hole (92), air outlet hole (93); The inside of installation cavity (94) is fixedly connected with valve seat body (8), the inside of valve seat body (8) is provided with valve seat inner cavity (82), and the valve seat body (8) is provided with valve seat air inlet (81) and valve seat air outlet (83) communicated with valve seat inner cavity (82), the first air inlet hole (91) and second air inlet hole (92) are communicated with valve seat air inlet (81), and the valve seat air outlet (83) is communicated with air outlet hole (93); The inside of valve seat body (8) is vertically slidably connected with valve core assembly (2), the upper side of valve body (9) is fixedly connected with coil assembly (1), and the inside of coil assembly (1) and the end of magnetic steel sleeve assembly (3) away from coil assembly (1) are fixedly connected with spring (10).

2. The hydrogen proportional solenoid valve according to claim 1, characterized in that: The coil assembly (1) includes the outer sleeve (11) fixedly connected to the upper side of the valve body (9), the inner wall of the outer sleeve (11) is fixedly connected with the framework (14), and the inner wall of the framework (14) is fixedly connected with the upper sheet (13), the bottom sheet (15) and the coil (12) between the upper sheet (13) and the bottom sheet (15).

3. A proportional solenoid valve for hydrogen gas according to claim 2, characterized in that: The valve core assembly (2) includes the positioning pin (23) movably installed in the inside of the coil assembly (1), the positioning pin (23) is abutted with the spring (10), the end of the positioning pin (23) away from the spring (10) is fixedly connected with the valve core magnetic steel (21), the end of the valve core magnetic steel (21) away from the positioning pin (23) is fixedly connected with the guide rod (22), the guide rod (22) is slidably connected in the inside of the valve seat inner cavity (82), and the end of the guide rod (22) away from the valve core magnetic steel (21) is fixedly connected with the valve flap (24).

4. A proportional solenoid valve for hydrogen gas according to claim 3, characterized in that: The inside of the coil assembly (1) and the valve body (9) combination body is fixedly connected with the magnetic steel sleeve assembly (3) outside the valve core magnetic steel (21), the magnetic steel sleeve assembly (3) includes the upper magnetic steel sleeve (31), the magnetic shielding ring (32) and the lower magnetic steel sleeve (33), the upper magnetic steel sleeve (31) is fixedly connected in the inside of the coil assembly (1), the lower magnetic steel sleeve (33) is fixedly connected in the inside of the coil assembly (1) and the valve body (9) combination body, and the magnetic shielding ring (32) is fixedly connected between the upper magnetic steel sleeve (31) and the lower magnetic steel sleeve (33).

5. A proportional solenoid valve for hydrogen gas according to claim 4, characterized in that: One end of the outer sleeve (11) is provided with a through hole, one end of the upper magnetic steel sleeve (31) is provided with a threaded portion, the threaded portion extends to the outside of the outer sleeve (11) through the through hole, and the outside of the threaded portion is fixedly connected with the magnetic shielding mother (5) outside the outer sleeve (11), and the outside of the magnetic shielding mother (5) is fixedly connected with the cap (4).

6. A proportional solenoid valve for hydrogen gas according to claim 4, wherein: The inside of the upper magnetic steel sleeve (31) is fixedly connected with the upper guide sleeve (6), the positioning pin (23) is slidably connected in the inside of the upper guide sleeve (6), the inside of the valve seat body (8) is fixedly connected with the lower guide sleeve (7), and the guide rod (22) is slidably connected in the inside of the lower guide sleeve (7).

7. The proportional solenoid valve of claim 3, wherein: The valve body (9) is fixedly connected to the upper side of the coil assembly (1), the valve clack (24) is located on the upper side of the guide rod (22), the valve seat air inlet (81) is located on the upper side of the guide rod (22), and the upper end of the valve clack (24) is provided with a sharp end (25).

Images