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 is connected with the magnetism isolating sleeve in a buckled mode, 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, and a second sealing ring is arranged between the front yoke and the magnetism isolating sleeve. In this way, the tail yoke is in threaded connection with the magnetism isolating sleeve, the end, away from the tail yoke, of the magnetism isolating sleeve 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, and the production cost is reduced; the defects, such as weld joint cracking and air holes, possibly occurring in the welding process are also avoided, so that the yield of products is remarkably improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of solenoid valves, and particularly relates to a hydrogen solenoid valve connection structure and a solenoid valve. Background Art

[0002] Hydrogen solenoid valves are primarily used in hydrogen fuel cells, serving as the primary component of the hydrogen injector, which is the hydrogen supply unit. They control the flow of hydrogen and the amount of gas flowing through it. In existing hydrogen solenoid valves, the magnetic sleeve consists of three parts: a front flange, a magnetic shield, and a rear flange, which are welded together in sequence. Because hydrogen contains a certain amount of water vapor, the magnetic sleeve requires rust prevention both inside and outside. The usual practice is to first electroplate the front flange and rear flange to prevent rust, and then weld them to the magnetic shield. However, this electroplating-before-welding process presents a problem: the electroplating layer can affect welding quality, resulting in a low weld pass rate. Utility Model Content

[0003] In order to solve the problems raised in the above-mentioned background technology, the utility model provides the following technical solutions: a hydrogen solenoid valve connection structure, comprising a front bell, a tail bell, and a magnetic isolation sleeve, wherein an assembly groove is provided on the tail bell, the front bell and the magnetic isolation sleeve are interlocked, a first sealing ring is provided 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 provided between the tail bell and the magnetic isolation sleeve.

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

[0005] Furthermore, a fitting groove is provided on the outer wall of the front collar, and the end of the magnetic isolation sleeve away from the tail collar is pressed into 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 through 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 includes a solenoid valve, wherein the solenoid valve includes a hydrogen solenoid valve sealing structure and a valve core, and the valve core is connected to the tail valve.

[0010] The beneficial effects of the utility model are as follows: the tail bell is threadedly connected to the magnetic isolation sleeve, and the end of the magnetic isolation sleeve away from the tail bell is pressed into the fitting groove. The threaded connection and pressing 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, air holes, 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 This is the main view of the existing product;

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

[0014] Figure 4 It is a three-dimensional diagram of the utility model;

[0015] Figure 5 This is the main view of the utility model;

[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 part;

[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-tail 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1-8. The utility model 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 buckled with each other, a first sealing ring 5 is provided 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 provided 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 ring 2 and the front ring 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 pressed into 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 during the welding process, such as weld cracking, air holes, etc., thereby significantly improving the product yield.

[0025] In this embodiment, a threaded portion 8 is provided 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 provided 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 provided 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 includes a solenoid valve, wherein the solenoid valve includes a hydrogen solenoid valve sealing structure and a valve core, and the valve core is connected to the tail valve 2.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and 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 flange, a rear flange, and a magnetic isolation sleeve, wherein the rear flange is provided with an assembly groove, characterized in that: The front ear and the magnetic isolation sleeve are buckled with each other, a first sealing ring is provided between the front ear and the magnetic isolation sleeve, the end of the tail ear is detachably connected to the assembly groove, and a second sealing ring is provided between the tail 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. The hydrogen solenoid valve connection structure according to claim 1, characterized in that: An engaging groove is formed on the outer wall of the front ear, and one end of the magnetic isolation sleeve away from the tail ear is pressed into the engaging groove.

4. The 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. The 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 a hydrogen solenoid valve connection structure according to any one of claims 1 to 6, and a valve core, wherein the valve core is connected to the tail valve.

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