A high-pressure hydrogen solenoid valve and its working method

Abstract

The present invention discloses a high-pressure hydrogen solenoid valve and a working method thereof, which relates to the technical field of solenoid valves. The high-pressure hydrogen solenoid valve includes a valve body and a mounting sleeve on the valve body, a hollow valve is provided in the mounting sleeve, a sleeve is provided on the mounting sleeve, and an electromagnetic drive mechanism is provided on the sleeve; a floatingly connected and mutually connected auxiliary stop iron and armature are provided in the sleeve, a stroke adjustment column is inserted into the armature to ensure the synchronous movement of the auxiliary stop iron and the valve, the armature and the top of the valve are sealed by a spherical plug, the bottom of the valve is matched with the conical surface of the air outlet of the valve body and is provided with a first flow port connected to the air inlet of the valve body, the first flow port is connected to a side cavity provided on the side of the valve, and the side cavity is connected to the inner hole of the armature through a connecting cavity; when the electromagnetic drive mechanism is not energized, a gap is left between the armature and the auxiliary stop iron. The present invention effectively alleviates the problem of the large size of the solenoid valve caused by the large stroke of the armature assembly in the prior art, and can be applied to some places with high requirements for the size of the solenoid valve.

Description

Technical Field

[0001] The present invention relates to the technical field of solenoid valves, and in particular to a high-pressure hydrogen solenoid valve and a working method thereof. Background Art

[0002] Under the technical requirements of high pressure and large diameter, solenoid valves usually adopt the technical route of separating the main valve and the pilot valve. Due to the large diameter and large stroke, the suction force of the electromagnet is insufficient, which limits the design of the product. In order to ensure that the suction force of the electromagnet is large enough, a larger electromagnet needs to be used, which makes the solenoid valve very large. At the same time, this technical route is complex, there are many sealing parts that need to be controlled, and the quality is unstable.

[0003] An existing aerospace explosion-proof solenoid valve model ZFDF6-25K can withstand a working pressure generally below 25 MPa. Figure 6 As shown, it includes a valve body 101, an electromagnet 102, an armature assembly 103 and a valve assembly 104. The electromagnet 102 is located above the valve body 101, the armature assembly 103 is located inside the electromagnet 102, and the valve assembly 104 is located between the armature assembly 103 and the valve body 101. The movement stroke of the armature assembly 103 in the electromagnet 102 is h2. Figure 5 The explosion-proof solenoid valve h2 shown is 1.3 mm, and the armature assembly 103 has a large moving stroke. A large electromagnetic force is required to drive the armature assembly 103 to move, which inevitably increases the volume of the electromagnet 102. In some places where the volume of the solenoid valve is required to be high, it cannot meet actual needs. Summary of the Invention

[0004] In response to the deficiencies in the above-mentioned background technology, the present invention proposes a high-pressure hydrogen solenoid valve and a working method thereof, which effectively alleviates the problem in the prior art that the solenoid valve has a large volume due to the large stroke of the armature assembly, and can be applied to some places with high requirements on the volume of the solenoid valve.

[0005] The technical solution of the present invention is achieved as follows:

[0006] A high-pressure hydrogen solenoid valve comprises a valve body and a mounting sleeve arranged on the valve body, wherein a hollow valve is arranged in the mounting sleeve and the valve is communicated with the gas outlet of the valve body, a sleeve is arranged on the upper part of the mounting sleeve through a connecting collar, and an electromagnetic drive mechanism is arranged on the outside of the sleeve;

[0007] The sleeve is provided with a floatingly connected and mutually connected auxiliary stop iron and armature. A stroke adjustment column is inserted into the armature to ensure the synchronous movement of the auxiliary stop iron and the valve. The armature and the top of the valve are sealed by a spherical plug. The bottom of the valve is matched with the conical surface of the air outlet of the valve body. The bottom of the valve is provided with a first flow port connected to the air inlet of the valve body. The first flow port is connected to the side cavity provided on the side of the valve. The side cavity is connected to the inner hole of the armature through the connecting cavity.

[0008] When the electromagnetic drive mechanism is not energized, there is a gap between the armature and the auxiliary stop iron.

[0009] The present invention is further configured such that the electromagnetic drive mechanism is an electromagnet, the electromagnet is mounted on the mounting sleeve, and the sleeve is inserted into the coil of the electromagnet.

[0010] The present invention is further configured such that a mounting groove is formed on the valve body, a mounting sleeve is disposed on the mounting groove, a connecting groove is formed at the bottom of the mounting groove, the air inlet comprises an inlet cavity formed at one end of the valve body and a guide cavity I for connecting the inlet cavity and the connecting groove, the guide cavity I being connected to the side cavity of the valve through the first flow port;

[0011] The bottom of the connecting groove is provided with an oblique groove opening which matches the valve cone surface. The air outlet includes an outlet cavity opened at one end of the valve body away from the inlet cavity and a guide cavity II for connecting the oblique groove opening and the outlet cavity.

[0012] The present invention is further configured such that the auxiliary iron stop is floatingly connected to the sleeve through an elastic part I, the armature is floatingly connected to the auxiliary iron stop through an elastic part II, the armature is movably arranged in the mounting sleeve, and axially parallel limiting holes are provided on both sides of the inner hole of the armature, the stroke adjustment column is inserted in the limiting hole, and the two ends of the stroke adjustment column respectively extend out of the two end ports of the limiting hole, and the two ends of the stroke adjustment column respectively contact the top of the valve and the bottom plane of the auxiliary iron stop.

[0013] The present invention is further configured such that when the electromagnetic drive mechanism is not energized, a gap formed between the armature and the auxiliary stop iron under the action of the elastic member II is 0.3 mm.

[0014] The present invention is further configured such that a planar portion is provided on the outer side wall of the armature, and a drainage cavity is formed between the planar portion and the inner hole of the mounting sleeve. The connecting cavity includes a drainage cavity, a drainage hole provided on the inner hole of the armature, and a dark flow channel provided on the mounting sleeve. The drainage hole is communicated with the drainage cavity, one end of the dark flow channel is communicated with the side cavity of the valve, and the other end is communicated with the drainage cavity.

[0015] The present invention is further configured such that the aperture of the first flow port is 0.2 mm, and the aperture of the port of the valve away from the oblique slot is 0.8 mm.

[0016] The present invention is further configured such that the elastic member I and the elastic member II are both springs.

[0017] The present invention is further configured such that the outlet is connected to a one-way guide valve.

[0018] A working method of a high-pressure hydrogen solenoid valve includes three conditions: no ventilation and power off, ventilation and power off, and ventilation and power on:

[0019] When the inlet chamber is blocked and the electromagnet is powered off, under the action of elastic member I, the auxiliary stopper pushes the valve against the oblique notch on the connecting groove via the stroke adjustment column. Under the action of elastic member II, the distance between the armature and the auxiliary stopper is 0.3mm. At this time, the spherical plug at the end of the armature presses against the top port of the valve, and the valve body is not conductive.

[0020] When the inlet chamber is ventilated and the electromagnet is de-energized, the gas in the inlet chamber enters the guide chamber I and enters the side chamber through the first flow port, then enters the inner hole of the armature through the dark flow channel, and then enters the inner hole of the auxiliary stop iron. Finally, high pressure is formed in the cavity formed by the inner holes of the auxiliary stop iron and the armature. At this time, the spherical plug at the end of the armature still rests on the top fracture of the valve, and the distance between the armature and the auxiliary stop iron is still 0.3mm, so the valve body is not conductive.

[0021] When the inlet chamber is ventilated and the electromagnet is energized, the electromagnet generates electromagnetic force, the auxiliary stop iron attracts the armature, and the armature drives the spherical plug to separate from the top port of the valve, and the high-pressure gas condensed in the inner hole of the auxiliary stop iron and the inner hole of the armature, as well as the gas entering the diversion chamber from the dark flow channel, enters the inner hole of the valve from the top port of the valve, and then flows to the diversion chamber II. Since the aperture of the top port of the valve is larger than the aperture of the first flow port, the exhaust volume in the inner hole of the auxiliary stop iron is greater than the intake volume, causing the auxiliary stop iron and the armature inner cavity to lose pressure, and the elastic member I can no longer press the valve against the oblique slot through the auxiliary stop iron and the stroke adjustment column, thereby causing the valve to separate from the oblique slot, so that the diversion chamber I is connected with the diversion chamber II. When the pressure in the outlet chamber reaches the opening pressure of the one-way diversion valve, the valve body is connected.

[0022] The beneficial technical effect of the present invention is that the distance between the armature and the auxiliary stop iron is 0.3 mm. When the air is ventilated and the power is on, the auxiliary stop iron will attract the armature, thereby causing the spherical plug to separate from the valve and open the valve. Compared with the existing explosion-proof solenoid valve, the stroke of the armature is shorter, and the electromagnet used to attract the armature is smaller in size, so it can be used in some applications that require a larger volume of the solenoid valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0024] Figure 1 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0025] Figure 2 for Figure 1 An enlarged schematic diagram of part B;

[0026] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure in the AA direction;

[0027] Figure 4 for Figure 3 A magnified schematic diagram of part C;

[0028] Figure 5 It is a structural diagram of the armature;

[0029] Figure 6 This is a schematic diagram of the overall cross-sectional structure of an aerospace explosion-proof solenoid valve model ZFDF6-25K in the background technology of the present invention.

[0030] In the figure, 1. valve body; 11. mounting groove; 12. connecting groove; 13. inlet chamber; 14. outlet chamber; 15. diversion chamber I; 16. diversion chamber II; 2. one-way diversion valve; 3. mounting sleeve; 4. valve; 41. side chamber; 42. first flow port; 5. electromagnet; 51. sleeve; 52. connecting ring; 61. elastic part I; 62. auxiliary stop iron; 63. elastic part II; 64. armature; 65. spherical plug; 7. stroke adjustment column; 8. diversion chamber; 81. diversion hole. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0032] Example 1:

[0033] Reference Figure 1 A high-pressure hydrogen solenoid valve includes a valve body 1. A mounting groove 11 is provided on the valve body 1, and a connecting groove 12 coaxially arranged with the mounting groove 11 is provided at the bottom of the mounting groove 11.

[0034] The valve body 1 is provided with an air inlet and an air outlet on either side. The air inlet comprises an inlet chamber 13 at one end of the valve body 1 and a diversion chamber I 15 connecting the inlet chamber 13 with the communication groove 12. The communication groove 12 has an oblique slot opening at its bottom, located to one side of the diversion chamber I 15. The air outlet comprises an outlet chamber 14 at the end of the valve body 1 away from the inlet chamber 13 and a diversion chamber II 16 connecting the oblique slot opening and the outlet chamber 14. The oblique slot opening communicates with the outlet chamber 14 via the diversion chamber II 16. A one-way diversion valve 2 is installed within the outlet chamber 14 to supply air to external equipment.

[0035] The mounting sleeve 3 is installed in the mounting groove 11, and a valve 4 is movably arranged in the mounting sleeve 3. Specifically, the inner hole of the mounting sleeve 3 includes a large end hole and a small end hole. The small end hole is located above the large end hole and communicates with the connecting groove 12. The valve 4 is a hollow conductive column, and the valve 4 includes a large end and a small end. The large end of the valve 4 is located in the large end hole of the mounting sleeve 3, and the small end is located in the small end hole of the mounting sleeve 3. The large end of the valve 4, away from the small end, is tapered and inserted into the oblique slot opening, tightly abutting against the wall of the oblique slot opening.

[0036] Reference Figure 1 and Figure 2 A side cavity 41 is defined on the side of the valve 4 near the guide cavity I 15. This side cavity 41 is formed on the sidewall of the small end of the valve 4, and the end of the side cavity 41 near the opening of the oblique slot extends into the large end of the valve 4. A first flow opening 42 is defined on the wall of the side cavity 41. The first flow opening 42 is located on the sidewall extending from the side cavity 41 to the large end of the valve 4. The aperture of the first flow opening 42 is 0.2 mm. The side cavity 41 communicates with the connecting groove 12 and the guide cavity I 15 through the first flow opening 42.

[0037] Reference Figure 1 and Figure 3 The mounting sleeve 3 is provided with an electromagnet 5, and a sleeve 51 is provided between the coils of the electromagnet 5. The sleeve 51 is connected to the mounting sleeve 3 through a connecting collar 52. A hollow auxiliary stop 62 is connected to the sleeve 51 through an elastic member I 61, and an armature 64 movably provided in the mounting sleeve 3 is connected to the auxiliary stop 62 through an elastic member II 63.

[0038] The inner hole of the armature 64 is a stepped hole, comprising the larger hole 1, hole 2 at the bottom of hole 1, and hole 3 at the bottom of hole 2. The end of the elastic member II 63, distal from the auxiliary stop 62, extends into hole 1 and is fixedly connected to the bottom surface of hole 1 near hole 2, thereby achieving a fixed connection between the elastic member II 63 and the armature 64, and thus a floating connection between the auxiliary stop 62 and the armature 64.

[0039] A spherical plug 65 for blocking the stepped hole is installed at one end of hole three away from hole two and hole one. Under the action of elastic member II 63, the spherical plug 65 on the armature 64 contacts the edge of the port of the valve 4 away from the oblique notch and closes the port of the valve 4 away from the oblique notch.

[0040] It should be noted that the aperture of the port of the valve 4 away from the oblique slot is 0.8 mm.

[0041] The stepped hole of the armature 64 is provided with stop holes axially parallel to the stepped hole, and a stroke adjustment post 7 is inserted into the stop holes. Specifically, the ends of the stroke adjustment post 7 contact the top of the valve 4 and the bottom of the auxiliary stop 62, respectively. Under the action of the elastic member II 63, a 0.3mm gap is formed between the armature 64 and the auxiliary stop 62.

[0042] like Figure 1 、 Figure 3-Figure 5 As shown, the outer wall of the armature 64 is provided with a flat portion, and a drainage chamber 8 is formed between the flat portion and the inner hole of the mounting sleeve 3. The stepped hole is connected to the side chamber 41 of the valve 4 through a connecting chamber, and the connecting chamber includes the drainage chamber 8, the drainage hole 81 provided on the inner wall of the stepped hole, and a dark flow channel (not shown in the figure) provided on the mounting sleeve 3. Specifically, the drainage hole 81 is located on the inner wall of the second hole of the stepped hole, and the drainage hole 81 is connected to the drainage chamber 8. The dark flow channel is a dark channel provided on the mounting sleeve 3. One end of the dark flow channel is connected to the side chamber 41 on the valve 4, and the other end is connected to the drainage chamber 8. Through the dark flow channel and the drainage hole 81, the side chamber 41, the drainage chamber 8, the inner cavity of the armature 64 and the inner cavity of the auxiliary iron stop 62 can be connected.

[0043] Both elastic member I 61 and elastic member II 63 are springs. In the initial state, i.e., when electromagnet 5 is de-energized and inlet chamber 13 is not ventilated, the elastic force of elastic member I 61 ensures that auxiliary iron stop 62 is always in contact with stroke adjustment post 7, and stroke adjustment post 7 is always in contact with the top of valve 4, thus ensuring the synchronous movement of auxiliary iron stop 62, stroke adjustment post 7, and valve 4.

[0044] In this embodiment, the first flow port 42 serves to connect the guide chamber I15, the side chamber 41, the dark flow channel, the drainage chamber 8, the inner cavity of the armature 64 and the inner cavity of the auxiliary iron stop 62. Under the action of the elastic part II63, the armature 64 causes the spherical plug 65 to block the top port of the valve 4, thereby preventing the inner cavity of the valve 4 from communicating with the drainage chamber 8.

[0045] Example 2:

[0046] This embodiment is a further explanation based on the embodiment 1.

[0047] This embodiment introduces a working method of a high-pressure hydrogen solenoid valve, including three conditions: no air flow and power off, air flow and power off, and air flow and power on.

[0048] When the inlet chamber 13 is not ventilated and the electromagnet 5 is powered off, under the action of the elastic member I 61, the auxiliary stop iron 62 pushes the valve 4 to press against the oblique notch on the communicating groove 12 through the stroke adjustment column 7. Under the action of the elastic member II 63, the distance between the armature 64 and the auxiliary stop iron 62 is 0.3 mm, and the valve body 1 is not conductive.

[0049] When the inlet chamber 13 is ventilated and the electromagnet 5 is powered off, the inlet gas enters the guide chamber I15 from the inlet chamber 13 and enters the side chamber 41 through the first flow port 42, then enters the drainage chamber 8 through the dark flow channel, and enters the inner hole of the armature 64 from the drainage chamber 8, that is, the inner cavity of the armature 64, and then enters the inner hole of the auxiliary iron block 62 from the inner hole of the armature 64, and finally forms a high pressure in the cavity formed by the inner hole of the auxiliary iron block 62 and the inner hole of the armature 64. At this time, the spherical plug 65 at the bottom end of the armature 64 is still against the top port of the valve 4, and the distance between the armature 64 and the auxiliary iron block 62 is still 0.3 mm. The valve 4 is still tightly against the oblique slot on the connecting groove 12, and the valve body 1 is not conductive.

[0050] When the inlet chamber 13 is ventilated and the electromagnet 5 is energized, the electromagnet 5 generates an electromagnetic force, which overcomes the elastic force of the elastic part II 63, causing the auxiliary stop iron 62 to attract the armature 64, and the armature 64 drives the spherical plug 65 to disengage from the top port of the valve 4, so that the valve 4 is connected to the drainage chamber 8. The high-pressure gas condensed in the inner hole of the auxiliary stop iron 62 and the inner hole of the armature 64, as well as the gas entering the drainage chamber 8 from the dark flow channel enters the inner hole of the valve 4 from the top port of the valve 4, and then flows to the guide chamber II 16 and accumulates in the outlet chamber 14. The pressure in the outlet chamber 14 gradually increases, but still does not reach the standard for the one-way valve to be conductive.

[0051] At this time, since the aperture of the top port of the valve 4 is larger than the aperture of the first flow port 42, the gas entering the inner cavity of the auxiliary stop iron 62 and the inner cavity of the armature 64 is much smaller than the gas discharged from the inner cavity of the auxiliary stop iron 62 and the inner cavity of the armature 64, causing the inner cavity of the auxiliary stop iron 62 and the armature 64 to lose pressure rapidly. When the pressure in the outlet chamber 14 makes it impossible for the elastic member I61 to press the valve 4 against the inclined slot through the auxiliary stop iron 62 and the stroke adjustment column 7, the valve 4 will break away from the inclined slot, thereby connecting the guide chamber I15 with the guide chamber II16. The connection between the guide chamber I15 and the guide chamber II16 causes the pressure in the guide chamber II16 to increase rapidly, thereby causing the pressure in the outlet chamber 14 to increase rapidly. When the pressure in the outlet chamber 14 reaches the opening pressure of the one-way valve, the valve body 1 is connected.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-pressure hydrogen solenoid valve, characterized in that: The invention comprises a valve body (1) and a mounting sleeve (3) arranged on the valve body (1); a hollow valve (4) is arranged in the mounting sleeve (3); the valve (4) is communicated with the air outlet of the valve body (1); a sleeve (51) is arranged on the upper part of the mounting sleeve (3) through a connecting collar (52); an electromagnetic drive mechanism is arranged on the outside of the sleeve (51); The sleeve (51) is provided with a floatingly connected auxiliary stopper (62) and an armature (64) that are interconnected. A stroke adjustment column (7) is inserted into the armature (64) to ensure the synchronous movement of the auxiliary stopper (62) and the valve (4). The armature (64) and the top of the valve (4) are sealed by a spherical plug (65). The bottom of the valve (4) is matched with the conical surface of the air outlet of the valve body (1). The bottom of the valve (4) is provided with a first flow port (42) that is connected to the air inlet of the valve body (1). The first flow port (42) is connected to a side cavity (41) provided on the side of the valve (4). The side cavity (41) is connected to the inner hole of the armature (64) through the connecting cavity. When the electromagnetic drive mechanism is not energized, a gap is left between the armature (64) and the auxiliary stopper (62); The auxiliary iron stop (62) is a hollow structure and its upper end is in communication with the inner cavity of the sleeve (51); The auxiliary stop iron (62) is connected to the sleeve (51) in a floating manner through an elastic member I (61), and the armature (64) is connected to the auxiliary stop iron (62) in a floating manner through an elastic member II (63). The armature (64) is movably arranged in the mounting sleeve (3), and axially parallel limiting holes are provided on both sides of the inner hole of the armature (64). The stroke adjustment column (7) is inserted into the limiting hole, and the two ends of the stroke adjustment column (7) respectively extend out of the two end ports of the limiting hole, and the two ends of the stroke adjustment column (7) respectively contact the top of the valve (4) and the bottom plane of the auxiliary stop iron (62).

2. A high-pressure hydrogen solenoid valve according to claim 1, characterized in that: The electromagnetic drive mechanism is an electromagnet (5), the electromagnet (5) is mounted on the mounting sleeve (3), and the sleeve (51) is inserted into the coil of the electromagnet (5).

3. A high-pressure hydrogen solenoid valve according to claim 2, characterized in that: The valve body (1) is provided with a mounting groove (11), the mounting sleeve (3) is arranged on the mounting groove (11), a connecting groove (12) is provided at the bottom of the mounting groove (11), the air inlet comprises an inlet cavity (13) provided at one end of the valve body (1) and a guide cavity I (15) for connecting the inlet cavity and the connecting groove (12), the guide cavity I (15) being connected to the side cavity (41) of the valve (4) through the first flow port (42); The bottom of the connecting groove (12) is provided with an oblique groove opening that matches the conical surface of the valve (4), and the air outlet includes an outlet cavity (14) opened at one end of the valve body (1) away from the inlet cavity (13) and a guide cavity II (16) for connecting the oblique groove opening and the outlet cavity (14).

4. A high-pressure hydrogen solenoid valve according to claim 3, characterized in that: When the electromagnetic drive mechanism is not energized, the gap formed between the armature (64) and the auxiliary stop iron (62) under the action of the elastic member II (63) is 0.3 mm.

5. A high-pressure hydrogen solenoid valve according to claim 4, characterized in that: The outer wall of the armature (64) is provided with a flat portion, and a drainage cavity (8) is formed between the flat portion and the inner hole of the mounting sleeve (3). The communicating cavity includes the drainage cavity (8), a drainage hole (81) provided on the inner hole of the armature (64), and a dark flow channel provided on the mounting sleeve (3). The drainage hole (81) is in communication with the drainage cavity (8), and one end of the dark flow channel is in communication with the side cavity (41) of the valve (4), and the other end is in communication with the drainage cavity (8).

6. A high-pressure hydrogen solenoid valve according to claim 5, characterized in that: The aperture of the first flow port (42) is 0.2 mm, and the aperture of the port of the valve (4) away from the inclined slot is 0.8 mm.

7. A high-pressure hydrogen solenoid valve according to claim 6, characterized in that: The elastic member I (61) and the elastic member II (63) are both springs.

8. A high-pressure hydrogen solenoid valve according to any one of claims 5 to 7, characterized in that: The gas outlet is connected to a one-way guide valve (2).

9. A method for operating a high-pressure hydrogen solenoid valve according to claim 8, characterized in that: It includes three situations: no ventilation and power off, ventilation and power off, and ventilation and power on: When the inlet chamber (13) is blocked and the electromagnet (5) is powered off, under the action of the elastic member I (61), the auxiliary stopper (62) pushes the valve (4) and the oblique notch on the communicating groove (12) through the stroke adjustment column (7), and under the action of the elastic member II (63), the distance between the armature (64) and the auxiliary stopper (62) is 0.3 mm. At this time, the spherical plug (65) at the end of the armature (64) abuts against the top port of the valve (4), and the valve body (1) is not conductive; When the inlet chamber (13) is ventilated and the electromagnet (5) is powered off, the gas in the inlet chamber (13) enters the flow guide chamber I (15) and enters the side chamber (41) through the first flow port (42), then enters the inner hole of the armature (64) through the dark flow channel, and then enters the inner hole of the auxiliary stop iron (62), and finally forms a high pressure in the cavity formed by the inner hole of the auxiliary stop iron (62) and the inner hole of the armature (64). At this time, the spherical plug (65) at the end of the armature (64) still abuts the top port of the valve (4), the distance between the armature (64) and the auxiliary stop iron (62) is still 0.3 mm, and the valve body (1) is not conductive; When the inlet chamber (13) is ventilated and the electromagnet (5) is energized, the electromagnet (5) generates electromagnetic force, the auxiliary stopper (62) attracts the armature (64), and the armature (64) drives the spherical plug (65) to separate from the top port of the valve (4). The high-pressure gas condensed in the inner hole of the auxiliary stopper (62) and the inner hole of the armature (64) and the gas entering the drainage chamber (8) from the dark flow channel enters the inner hole of the valve (4) from the top port of the valve (4) and then flows to the diversion chamber II (16). Due to the aperture of the top port of the valve (4), the high-pressure gas condensed in the inner hole of the auxiliary stopper (62) and the inner hole of the armature (64) and the gas entering the diversion chamber (8) from the dark flow channel enters the inner hole of the valve (4) from the top port of the valve (4) and then flows to the diversion chamber II (16). The diameter of the first flow port (42) is larger than that of the auxiliary stop iron (62), and the exhaust volume in the inner hole of the auxiliary stop iron (62) is larger than the intake volume, so that the inner cavity of the auxiliary stop iron (62) and the armature (64) loses pressure, and the elastic member I (61) can no longer press the valve (4) against the inclined slot through the auxiliary stop iron (62) and the stroke adjustment column (7), thereby causing the valve (4) to separate from the inclined slot, so that the guide chamber I (15) is connected to the guide chamber II (16), and when the pressure in the outlet chamber (14) reaches the opening pressure of the one-way guide valve (2), the valve body (1) is opened.

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