Hydrogen electromagnetic valve connecting structure and electromagnetic valve

Abstract

The hydrogen electromagnetic valve connecting structure comprises a front yoke, a tail yoke and a magnetism isolating sleeve, an assembling groove is formed in the tail yoke, the front yoke and the magnetism isolating sleeve are mutually buckled, a first sealing ring is arranged between the front yoke and the magnetism isolating sleeve, the end of the tail yoke is detachably connected into the assembling groove, a second sealing ring is arranged between the tail yoke and the magnetism isolating sleeve, and the first sealing ring and the second sealing ring are detachably connected into the assembling groove. In this way, the tail yoke is in threaded connection with the magnetic shield, the end, away from the tail yoke, of the magnetic shield is buckled and pressed in the wedging groove, a traditional welding process is replaced with the threaded connection and buckling and pressing mode, the production process is simplified, the production cost is reduced, and the defects such as weld joint cracking and air holes possibly occurring in the welding process are avoided; therefore, the yield of products is obviously improved.

Description

Technical Field

[0001] The invention belongs to the technical field of solenoid valves, and in particular relates to a hydrogen solenoid valve connection structure and a solenoid valve. Background Art

[0002] The hydrogen solenoid valve is mainly used in hydrogen fuel cells, and is the main component of the hydrogen injector as a hydrogen supply component. It is used to control the on and off of hydrogen and the amount of ventilation. In the existing hydrogen solenoid valve, the magnetic sleeve is composed of three parts: the front sleeve, the magnetic isolation sleeve and the rear sleeve, which are welded together in sequence. Since the hydrogen medium contains a certain amount of water vapor, the inside and outside of the magnetic sleeve need to be rust-proofed. The usual practice is to electroplate the front sleeve and the rear sleeve to prevent rust, and then weld them to the magnetic isolation sleeve. However, there is a problem with this process of electroplating first and then welding: the electroplating layer will affect the welding quality, resulting in a low welding pass rate. Summary of the invention

[0003] In order to solve the problems raised in the above-mentioned background technology, the present invention provides the following technical solutions: a hydrogen solenoid valve connection structure, comprising a front bell, a tail bell, and a magnetic isolation sleeve, the tail bell is provided with an assembly groove, the front bell and the magnetic isolation sleeve are interlocked, a first sealing ring is arranged between the front bell and the magnetic isolation sleeve, the end of the tail bell is detachably connected to the assembly groove, and a second sealing ring is arranged between the tail bell and the magnetic isolation sleeve.

[0004] Furthermore, the tail bolt is threadedly connected to the magnetic isolation sleeve.

[0005] Furthermore, a fitting groove is provided on the outer wall of the front collar, and one end of the magnetic isolation sleeve away from the rear collar is buckled in the fitting groove.

[0006] Furthermore, the outer wall of the magnetic isolation sleeve is provided with a threaded portion, and the magnetic isolation sleeve is connected to the assembly groove via the threaded portion.

[0007] Furthermore, the first sealing ring is arranged on the outer wall of the front ring, and the first sealing ring is in contact with the inner wall of the magnetic isolation sleeve.

[0008] Furthermore, the second sealing ring is arranged on the outer wall of the magnetic isolation sleeve, and the second sealing ring is in contact with the inner wall of the assembly groove.

[0009] A solenoid valve comprises a solenoid valve, wherein the solenoid valve comprises a hydrogen solenoid valve sealing structure and a valve core, wherein the valve core is connected to the tail valve.

[0010] The beneficial effects of the present invention are as follows: the tail socket is threadedly connected to the magnetic isolation sleeve, and the end of the magnetic isolation sleeve away from the tail socket is buckled in the fitting groove, and the threaded connection and buckling method are used to replace the traditional welding process. Under the premise of ensuring the connection strength, it not only simplifies the production process, but also avoids defects that may occur in the welding process, such as weld cracking, pores, etc., thereby significantly improving the product yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A three-dimensional diagram of an existing product;

[0012] Figure 2 It is the main view of the existing product;

[0013] Figure 3 for Figure 2 Schematic diagram of the section along the AA direction;

[0014] Figure 4 A perspective view of the present invention;

[0015] Figure 5 It is a front view of the present invention;

[0016] Figure 6 for Figure 5 Schematic diagram of the cross section in the BB direction

[0017] Figure 7 for Figure 6 Enlarged view of middle C;

[0018] Figure 8 for Figure 6 Enlarged view of part D in the middle.

[0019] The meaning of the numbers in the figure are: 1-front thread; 2-rear thread; 3-magnetic isolation sleeve; 4-assembly groove; 5-first sealing ring; 6-second sealing ring; 7-matching groove; 8-threaded part; 9-welding area. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figure 1-8. The present invention provides the following technical solutions: a hydrogen solenoid valve connection structure, comprising a front bell 1, a tail bell 2, and a magnetic isolation sleeve 3, wherein the tail bell 2 is provided with an assembly groove 4, the front bell 1 and the magnetic isolation sleeve 3 are interlocked, a first sealing ring 5 is arranged between the front bell 1 and the magnetic isolation sleeve 3, the end of the tail bell 2 is detachably connected to the assembly groove 4, and a second sealing ring 6 is arranged between the tail bell 2 and the magnetic isolation sleeve 3.

[0022] In the above structure, the magnetic isolation sleeve 3 is made of 316 material, which has good corrosion resistance, high temperature resistance and high strength, and is suitable for the transmission of hydrogen medium; the tail sleeve 2 and the front sleeve 1 are made of DT4C material, which has good magnetic and mechanical properties and can meet the working requirements of the solenoid valve; the first sealing ring 5 and the second sealing ring 6 effectively enhance the sealing performance of the solenoid valve, ensure that hydrogen will not leak during the transmission process, and improve the reliability and safety of the solenoid valve.

[0023] In this embodiment, the tail bell 2 is threadedly connected to the magnetic isolation sleeve 3 ; a fitting groove 7 is provided on the outer wall of the front bell 1 , and one end of the magnetic isolation sleeve 3 away from the tail bell 2 is buckled in the fitting groove 7 .

[0024] In the above structure, the tail bell 2 is threadedly connected to the magnetic isolation sleeve 3, and the end of the magnetic isolation sleeve 3 away from the tail bell 2 is pressed into the fitting groove 7. The threaded connection and pressing method are used to replace the traditional welding process, which not only simplifies the production process, but also avoids defects that may occur in the welding process, such as weld cracking, pores, etc., thereby significantly improving the product yield.

[0025] In this embodiment, a threaded portion 8 is disposed on the outer wall of the magnetic isolation sleeve 3 , and the magnetic isolation sleeve 3 is connected to the assembly groove 4 via the threaded portion 8 .

[0026] In this embodiment, the first sealing ring 5 is arranged on the outer wall of the front bell 1 , and the first sealing ring 5 is in contact with the inner wall of the magnetic isolation sleeve 3 .

[0027] In the above structure, the first sealing ring 5 is arranged adjacent to the fitting groove 7 .

[0028] In this embodiment, the second sealing ring 6 is disposed on the outer wall of the magnetic isolation sleeve 3 , and the second sealing ring 6 is in contact with the inner wall of the assembly groove 4 .

[0029] In the above structure, the second sealing sleeve is arranged adjacent to the bottom of the fitting groove 7 .

[0030] A solenoid valve comprises a solenoid valve, wherein the solenoid valve comprises a hydrogen solenoid valve sealing structure and a valve core, wherein the valve core is connected to the tail valve 2.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydrogen solenoid valve connection structure, comprising a front bell, a rear bell, and a magnetic isolation sleeve, wherein the rear bell is provided with an assembly groove, characterized in that: The front ear is buckled with the magnetic isolation sleeve, a first sealing ring is arranged between the front ear and the magnetic isolation sleeve, the end of the rear ear is detachably connected to the assembly groove, and a second sealing ring is arranged between the rear ear and the magnetic isolation sleeve.

2. A hydrogen solenoid valve connection structure according to claim 1, characterized in that: The tail bell is threadedly connected to the magnetic isolation sleeve.

3. A hydrogen solenoid valve connection structure according to claim 1, characterized in that: An outer wall of the front collar is provided with a fitting groove, and one end of the magnetic isolation sleeve away from the rear collar is buckled in the fitting groove.

4. A hydrogen solenoid valve connection structure according to claim 1, characterized in that: The outer wall of the magnetic isolation sleeve is provided with a threaded portion, and the magnetic isolation sleeve is connected to the assembly groove through the threaded portion.

5. The hydrogen solenoid valve connection structure according to claim 1, characterized in that: The first sealing ring is arranged on the outer wall of the front ring, and the first sealing ring is in contact with the inner wall of the magnetic isolation sleeve.

6. A hydrogen solenoid valve connection structure according to claim 1, characterized in that: The second sealing ring is arranged on the outer wall of the magnetic isolation sleeve, and the second sealing ring is in contact with the inner wall of the assembly groove.

7. A solenoid valve, comprising a solenoid valve, characterized in that: The solenoid valve comprises the hydrogen solenoid valve sealing structure according to any one of claims 1 to 6 and a valve core, and the valve core is connected to the tail valve.

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