CN111828660A

CN111828660A - High-pressure normally-open emergency cut-off electromagnetic valve

Info

Publication number: CN111828660A
Application number: CN202010426339.3A
Authority: CN
Inventors: 杨顺江; 谢勇; 张伟; 杨俊�
Original assignee: Chongqing Kaibairui Valve Co ltd
Current assignee: Chongqing Kaibairui Valve Co ltd
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2020-10-27
Anticipated expiration: 2040-05-19
Also published as: CN111828660B

Abstract

The invention discloses a high-pressure normally-open emergency cut-off electromagnetic valve which comprises a valve body, a piston, a plug mechanism, a pull rod mechanism, a limiting mechanism and a mounting frame. The valve body is internally provided with an air nozzle, a valve cavity communicated with the air nozzle, an inlet and an outlet, and the piston is arranged in the valve cavity and positioned at the air nozzle. One side of the piston is provided with a throttling hole which is communicated with the valve cavity and the inlet, and a pilot hole which penetrates through the piston up and down is arranged in the piston. The upper end of the piston is movably connected with the plug mechanism, the mounting frame is arranged on the valve body, and the upper end of the plug mechanism is connected with the pull rod mechanism and arranged in the mounting frame. The limiting mechanism is arranged on the mounting frame and located on one side of the plug mechanism. The invention adopts the principle of direct action step by step, and the large-caliber emergency cut-off electromagnetic valve used in the high-pressure pipeline can easily open the electromagnetic valve; when the electromagnetic valve is closed, the handle rod does not move, the locking force of the handle rod seal by medium pressure under high pressure does not influence the closing function of the electromagnetic valve, and the closing is reliable and stable.

Description

High-pressure normally-open emergency cut-off electromagnetic valve

Technical Field

The invention relates to an emergency cut-off electromagnetic valve for automatically controlling a pipeline, in particular to an emergency cut-off electromagnetic valve with a high pressure, medium and large caliber for the pipeline.

Background

The existing emergency cut-off solenoid valve is generally of a direct-acting type, a handle and a pull rod are connected with a piston, the outer seal is sealed on the pull rod, when the valve is opened, the pull rod is directly pulled to move upwards, then a movable iron core is clamped to stop, and the valve is opened. However, when the pipeline medium pressure exceeds 0.6MPa, the caliber of the valve is larger than DN25, the valve is difficult to be pulled open by human power. Secondly, after the electromagnetic valve is opened, when the electromagnetic valve needs to be closed, the piston is pressed by spring force to connect the handle rod to move to close, but when the electromagnetic valve is under high pressure, the pressure in the valve generates an external impact force on the sealing of the handle rod, the higher the pressure is, the tighter the sealing ring locks the handle rod, the spring force cannot overcome the locking force of the sealing ring on the handle rod, and the phenomenon that the electromagnetic valve cannot be closed is easily caused when the pressure is high.

Disclosure of Invention

In view of the above disadvantages, the present invention provides a high-pressure normally open emergency cut-off solenoid valve, which adopts a step-by-step direct-acting principle, and a large-caliber emergency cut-off solenoid valve used in a high-pressure pipeline can easily open the solenoid valve; when the electromagnetic valve is closed, the handle rod does not move, the locking force of the handle rod seal by medium pressure under high pressure does not influence the closing function of the electromagnetic valve, and the closing is reliable and stable.

In order to achieve the purpose, the technical scheme provided by the invention is as follows:

a high-pressure normally-open emergency cut-off electromagnetic valve comprises a valve body, a piston, a plug mechanism, a pull rod mechanism, a limiting mechanism and a mounting frame. The valve body is internally provided with an air nozzle, a valve cavity communicated with the air nozzle, an inlet and an outlet, and the piston is arranged in the valve cavity and positioned at the air nozzle. And one side of the piston is provided with a throttling hole, the throttling hole is communicated with the valve cavity and the inlet, and a pilot hole which penetrates through the piston up and down is formed in the piston. The upper end of piston and end cap mechanism swing joint, the mounting bracket set up in on the valve body, the upper end of end cap mechanism with pull rod mechanism connects and set up in the mounting bracket. The limiting mechanism is arranged on the mounting frame and located on one side of the plug mechanism and used for limiting the plug mechanism in up-and-down movement.

Preferably, the upper end of the valve body is fixedly provided with a middle cover, the middle part of the middle cover penetrates through the middle cover and is provided with an installation part protruding upwards, the installation part is fixedly connected with the installation frame, and sealing rings are arranged at the joint of the middle cover and the valve body and the joint of the installation part and the installation frame.

Preferably, the piston comprises a main body, a piston rod and a piston frame, the piston rod is fixed at the lower end of the main body, the piston frame is fixed on the main body, an installation table is arranged on the outer side edge of the piston frame, an installation groove is formed in the installation table, a piston ring is arranged in the installation groove and abuts against the inner wall of the valve cavity, a throttle hole is formed in one side of the piston frame and is communicated with the valve cavity and the inlet vertically, and the main body penetrates through the throttle hole from top to bottom and left to form the pilot hole.

Preferably, the bottom in the valve body is provided with a limiting sleeve, the piston rod can be movably arranged in the limiting sleeve up and down, and the limiting effect can be achieved when the piston moves up and down, so that the piston rod is prevented from swinging.

Preferably, the plug mechanism is arranged in a movable cavity in the mounting frame, and comprises a plug, a plug seat, a closing spring and a connecting rod, wherein the plug is arranged at the end part of the lower end of the plug seat, the lower end of the plug seat is movably connected with the piston through a connecting nut, the plug is positioned right above a pilot hole of the piston, the upper end of the plug seat is fixedly connected with the connecting rod, the closing spring is arranged in the connecting rod, the upper end of the closing spring is connected with the pull rod mechanism, and the lower end of the closing spring is fixedly connected with the plug seat.

Preferably, the upper end of the connecting nut is provided with a through hole, the lower end of the connecting nut is connected with the main body through threads, one side of the connecting nut is provided with a pressure relief hole in a penetrating mode, the plug seat penetrates through the through hole and is movably connected with the through hole, the bottom end of the plug seat is provided with a clamping portion in an outward protruding mode, and when the plug seat moves upwards, the clamping portion can be clamped on the inner wall of the connecting nut.

Preferably, the pull rod mechanism includes handle bar, return spring and handle, the handle is connected and is fixed in the upper end of handle bar, the lower extreme of handle bar passes mounting bracket and connecting rod and with closing spring fixed connection, the return spring cover is located the lower extreme of handle bar.

Preferably, from supreme having seted up down in the mounting bracket the activity chamber, first cavity, second cavity and the third cavity with activity chamber intercommunication are seted up in proper order to the upper end in the mounting bracket, the handle bar install in the mounting bracket, and the protruding spacing platform that is equipped with of lower extreme of handle bar, return spring install in on the handle bar, and the lower extreme support in spacing bench, the upper end be located and support in on the inner wall of first cavity, be equipped with sealing washer and seal ring nut in proper order in second cavity and the third cavity, just be equipped with spacing platform between handle and the seal ring nut.

Preferably, stop gear includes the coil, does not have the magnet tube, moves the iron core and moves the iron core spring, the coil install in the one end of no magnet tube, just the other end of no magnet tube is fixed install in on the mounting hole that mounting bracket one side was seted up, move the iron core activity install in no magnet tube, and move the one end of iron core through move the iron core spring with no magnet tube wall connection, the piece is held to the protruding being equipped with of other end, one side of the connecting rod of end cap mechanism corresponds the piece is held and is seted up the card and hold the groove.

Preferably, the upper end of the coil is fixedly arranged on the non-magnetic pipe through a coil nut, and a sealing ring is arranged at the joint of the coil and the non-magnetic pipe.

The invention has the beneficial effects that:

according to the invention, the plug mechanism and the pull rod mechanism are adopted to realize the step-by-step direct-acting principle, the piston is provided with the throttle hole and the pilot hole which are communicated with the valve cavity, the inlet and the outlet, the pilot hole is opened firstly when the piston is opened, the medium assisting piston is opened by means of the upper and lower pressure difference principle after the pressure in the valve cavity is relieved, so that the valve can be easily opened at high pressure, and the phenomenon that the existing electromagnetic valve cannot be pulled open by manpower at high pressure is avoided; meanwhile, when the coil is electrified to close the valve, the handle and the handle rod do not move, only the inner connecting rod pushes the plug seat to close the pilot hole by the closing spring, the pressure is increased after a medium in the valve cavity flows in through the throttling hole, the piston closes the plugging air nozzle by the aid of the medium pressure and the elastic force of the closing spring, and the handle rod does not move when the electromagnetic valve is closed, so that the locking force of the sealing ring on the handle rod does not influence the closing action of the electromagnetic valve when the medium is under high pressure, and the electromagnetic valve is more reliable and stable when closed.

The invention is further described with reference to the following figures and examples.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural diagram of a high-pressure normally-open emergency cutoff solenoid valve according to the present invention;

FIG. 2 is an enlarged view of the piston of FIG. 1;

FIG. 3 is an enlarged view of the stopper mechanism of FIG. 1;

fig. 4 is a schematic structural view of the mounting bracket of fig. 1.

The reference numerals in the drawings are explained below.

The valve comprises a valve body 1, an air nozzle 1a, a valve cavity 1b, an inlet 1c, an outlet 1d, a middle cover 1e, a mounting part 1f, a limiting sleeve 1g, a piston 2, a throttling hole 2a, a pilot hole 2b, a main body 2c, a piston rod 2d, a piston frame 2e, a mounting table 21e, a mounting groove 22e, a piston ring 23e, a plug mechanism 3, a plug 3a, a plug seat 3b, a clamping part 31b and a closing spring 3c, the clamping device comprises a connecting rod 3d, a clamping groove 31d, a pull rod mechanism 4, a handle rod 4a, a return spring 4b, a handle 4c, a limiting table 4d, a limiting mechanism 5, a coil 5a, a non-magnetic pipe 5b, a movable iron core 5c, a movable iron core spring 5d, a clamping block 5e, an installation frame 6, a movable cavity 6a, a first cavity 6b, a second cavity 6c, a third cavity 6d, an installation hole 6e, a sealing ring 7, a connecting nut 8 and a sealing ring nut 9.

Detailed Description

In order to explain technical contents, structural features, and objects and effects of the present invention in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1 to 4, a high-pressure normally-open emergency cutoff solenoid valve includes a valve body 1, a piston 2, a plug mechanism 3, a pull rod mechanism 4, a limiting mechanism 5, and a mounting frame 6. The valve body 1 is internally provided with an air nozzle 1a, a valve cavity 1b communicated with the air nozzle 1a, an inlet 1c and an outlet 1d, the piston 2 is arranged in the valve cavity 1b and positioned at the air nozzle 1a, and the electromagnetic valve is closed and opened by the piston 2 moving up and down to close the air nozzle 1 a. An orifice 2a is formed in one side of the piston 2, the orifice 2a is communicated with the valve cavity 1b and the inlet 1c, a pilot hole 2b penetrating up and down is formed in the piston 2, and the orifice 2a and the pilot hole 2b are arranged for adjusting and controlling the pressure in the valve cavity 1 b. The upper end of the piston 2 is movably connected with the plug mechanism 3, the mounting frame 6 is arranged on the valve body 1, the upper end of the plug mechanism 3 is connected with the pull rod mechanism 4 and is arranged in the mounting frame 6, and the limiting mechanism 5 is arranged on the mounting frame 6 and is located on one side of the plug mechanism 3 and used for limiting the plug mechanism 3 in the vertical movement.

Furthermore, the upper end of the valve body 1 is fixedly provided with a middle cover 1e, the middle of the middle cover 1e penetrates through and is provided with an installation part 1f protruding upwards, the installation part 1f is fixedly connected with the installation frame 6, and sealing rings 7 are arranged at the connection part of the middle cover 1e and the valve body 1 and the connection part of the installation part 1f and the installation frame 6, so that external impurities can be effectively prevented from entering the valve body 1 to influence the medium quality.

Referring to fig. 2, specifically, the piston 2 includes a main body 2c, a piston rod 2d and a piston frame 2e, the piston rod 2d is fixed at the lower end of the main body 2c, the piston frame 2d is fixed on the main body 2c, and an installation table 21e is disposed on the outer edge of the piston frame 2 e. An installation groove 22e is formed in the installation table 21e, a piston ring 23e is arranged in the installation groove 22e, and the piston ring 23e abuts against the inner wall of the valve cavity 1 b. One side of the piston frame 2e is provided with a throttling hole 2a, the upper part and the lower part of the throttling hole 2a are respectively communicated with the valve cavity 1b and the inlet 1c, and the main body 2c penetrates from top to bottom and leftwards to be provided with the pilot hole 2 b.

In this embodiment, the bottom in the valve body 1 is equipped with stop collar 1g, but piston rod 2d from top to bottom activity install in stop collar 1g, reciprocate the in-process when piston 2 can play spacing effect, prevent that piston rod 2d from swinging.

Specifically, the plug mechanism 3 is disposed in a movable cavity 6a in the mounting frame 6, and the plug mechanism 3 includes a plug 3a, a plug seat 3b, a closing spring 3c, and a connecting rod 3 d. The plug 3a is arranged at the lower end of the plug seat 3b, the lower end of the plug seat 3b is movably connected with the piston 2 through a connecting nut 8, and the plug 3a is positioned right above the pilot hole 2b of the piston 2 and used for plugging the pilot hole 2 b. The upper end of the plug seat 3b is fixedly connected with the connecting rod 3d, the closing spring 3c is arranged in the connecting rod 3d, the upper end of the closing spring is connected with the pull rod mechanism 4, and the lower end of the closing spring is fixedly connected with the plug seat 3 b.

Further, a through hole 8a is formed in the upper end of the connecting nut 8, the lower end of the connecting nut is connected with the main body 2c through threads, a pressure relief hole 8b is formed in one side of the connecting nut 8 in a penetrating mode, the plug seat 3b penetrates through the through hole 8a and is movably connected with the bottom end of the plug seat 3b, a clamping portion 31b is arranged at the bottom end of the plug seat 3b in an outwards protruding mode, and when the plug seat 3b moves upwards, the plug seat can be clamped on the inner wall of the connecting nut 8.

Specifically, the pull rod mechanism 4 comprises a handle rod 4a, a return spring 4b and a handle 4c, the handle 4c is connected and fixed on the upper end of the handle rod 4a, the lower end of the handle rod 4a penetrates through the mounting frame 6 and the connecting rod 3d and is fixedly connected with the closing spring 3c, and the return spring 4b is sleeved on the lower end of the handle rod 4 a.

Referring to fig. 4, the mounting frame 6 is provided with the movable cavity 6a from bottom to top, and the upper end is provided with a first cavity 6b, a second cavity 6c and a third cavity 6d communicated with the movable cavity 6a in sequence. The handle rod 4a is arranged in the mounting frame 6, a limiting table 4d is convexly arranged at the lower end of the handle rod 4a, the return spring 4b is arranged on the handle rod 4a, the lower end of the return spring abuts against the limiting table 4d, and the upper end of the return spring is positioned on and abuts against the inner wall of the first cavity 6 b. Be equipped with sealing washer 7 and seal ring nut 9 in second cavity 6c and the third cavity 6d in proper order, play dirt-proof effect, just be equipped with between handle 4c and the seal ring nut 9 spacing platform 4d can play the effect of location when reseing through return spring 4b behind pulling handle 4 c.

Stop gear 5 includes coil 5a, no magnet tube 5b, moves iron core 5c and moves iron core spring 5d, coil 5a install in no magnet tube 5 b's one end, just no magnet tube 5 b's the other end fixed install in on the mounting hole 6e seted up on 6 one side of mounting bracket. The movable iron core 5c is movably arranged in the non-magnetic pipe 5b, one end of the movable iron core 5c is connected with the inner wall of the non-magnetic pipe 5b through a movable iron core spring 5d, the other end of the movable iron core is convexly provided with a clamping block 5e, one side of the connecting rod 3d of the plug mechanism 3 corresponds to the clamping block 5e and is provided with a clamping groove 31d, and when the movable iron core 5c moves to the right side, the movable iron core is clamped and fixed with the clamping groove 31d through the clamping block 5e, so that the limiting and fixing effects on the piston 2 and the plug mechanism 3 are achieved.

In this embodiment, the upper end of the coil 5a is fixedly arranged on the non-magnetic pipe 5b through the coil nut 5e, and the connection part of the coil 5a and the non-magnetic pipe 5b is provided with the sealing ring 7.

The working principle of the invention is as follows:

if the solenoid valve is opened in the initial state, when the solenoid valve needs to be closed urgently, because the medium pressure in the valve cavity 1b is higher, the solenoid valve cannot be closed only by pulling by manpower, the structure and the working principle adopted by the invention are that firstly, the coil 5a is electrified, the movable iron core 5c and the non-magnetic pipe 5b are mutually attracted and compress the movable iron core spring 5d, and the clamping block 5e at the end part of the movable iron core 5c is separated from the clamping groove 31d at one side of the connecting rod 3 d. The connecting rod 3d pushes the plug 3a at the front end of the plug seat 3b downwards to close the pilot hole 2b by the elastic force of the closing spring 3 c. At this time, the medium continues to enter the valve chamber 1b at the upper end of the piston 2 through the orifice 2a, so that the pressure in the valve chamber 1b is gradually increased, and simultaneously the air nozzle 1a is closed downwards through the closing spring 3c and the gradually increased pressure of the medium until the electromagnetic valve is completely closed. The set of action handle 4c and handle lever 4a do not act and do not need to overcome the high pressure medium by manpower to complete the closing.

When the electromagnetic valve needs to be opened, the handle 4c is pulled upwards to be connected with the handle rod 4a to move upwards and compress the return spring 4b, the closing spring 3c connected with the lower end of the handle rod 4a is stretched and then pulls the connecting rod 3d and the plug seat 3b to move upwards, the pilot hole 2b is opened at the moment, the medium in the valve cavity 1b flows out from the pilot hole 2b to complete the pressure relief of the valve cavity 1b, the handle 4c is pulled upwards continuously and drives the piston 2 to move upwards to the highest position until the clamping block 5e at the front end of the movable iron core 5c is clamped and fixed with the clamping groove 31d of the connecting rod 3 d. At this time, the handle 4c is loosened, the handle 4c and the handle rod 4a return to the position of the limit table 4d by the elastic force of the return spring 4b, the electromagnetic valve completes the opening action, and the electromagnetic valve is opened.

Variations and modifications to the above-described embodiments may occur to those skilled in the art, which fall within the scope and spirit of the above description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. In addition, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation, the use of the term being generic or similar to other means being encompassed by the invention.

Claims

1. The utility model provides a high pressure normally opens emergency cut-off solenoid valve which characterized in that: the valve comprises a valve body (1), a piston (2), a plug mechanism (3), a pull rod mechanism (4), a limiting mechanism (5) and a mounting frame (6), wherein an air nozzle (1a), a valve cavity (1b) communicated with the air nozzle (1a), an inlet (1c) and an outlet (1d) are arranged in the valve body (1), the piston (2) is arranged in the valve cavity (1b) and positioned at the air nozzle (1a), one side of the piston (2) is provided with a throttling hole (2a), the throttling hole (2a) is communicated with the valve cavity (1b) and the inlet (1c), a pilot hole (2b) which penetrates through the piston (2) up and down is arranged in the piston (2), the upper end of the piston (2) is movably connected with the plug mechanism (3), the mounting frame (6) is arranged on the valve body (1), the upper end of the plug mechanism (3) is connected with the pull rod mechanism (4) and is arranged in the mounting frame (6), the limiting mechanism (5) is arranged on the mounting frame (6) and located on one side of the plug mechanism (3) and used for limiting the plug mechanism (3) in up-down movement.

2. A high pressure normally open slam shut solenoid as claimed in claim 1 wherein: the upper end of the valve body (1) is fixedly provided with a middle cover (1e), the middle of the middle cover (1e) penetrates through and is upwards convexly provided with an installation part (1f), the installation part (1f) is fixedly connected with the mounting rack (6), and sealing rings (7) are arranged at the connection part of the middle cover (1e) and the valve body (1), the connection part of the installation part (1f) and the mounting rack (6).

3. A high pressure normally open slam shut solenoid as claimed in claim 1 wherein: the piston (2) comprises a main body (2c), a piston rod (2d) and a piston frame (2e), the piston rod (2d) is fixed at the lower end of the main body (2c), the piston frame (2d) is fixed on the main body (2c), an installation table (21e) is arranged on the outer side edge of the piston frame (2e), an installation groove (22e) is arranged in the installation table (21e), a piston ring (23e) is arranged in the installation groove (22e), the piston ring (23e) abuts against the inner wall of the valve cavity (1b), a throttling hole (2a) is formed in one side of the piston frame (2e), the throttling hole (2a) is communicated with the valve cavity (1b) and an inlet (1c) from top to bottom, and the main body (2c) penetrates through the pilot hole (2b) from top to bottom and from left.

4. A high pressure normally open slam shut solenoid as claimed in claim 3 wherein: the bottom in the valve body (1) is equipped with stop collar (1g), piston rod (2d) can be from top to bottom the activity install in stop collar (1g), reciprocate the in-process when piston (2) and can play spacing effect, prevent that piston rod (2d) from swinging.

5. A high pressure normally open slam shut solenoid as claimed in claim 3 wherein: the plug mechanism (3) is arranged in a movable cavity (6a) in the mounting frame (6), the plug mechanism (3) comprises a plug (3a), a plug seat (3b), a closing spring (3c) and a connecting rod (3d), the plug (3a) is arranged at the end part of the lower end of the plug seat (3b), the lower end of the plug seat (3b) is movably connected with the piston (2) through a connecting nut (8), the plug (3a) is positioned right above a pilot hole (2b) of the piston (2), the upper end of the plug seat (3b) is fixedly connected with the connecting rod (3d), the closing spring (3c) is arranged in the connecting rod (3d), the upper end of the closing spring is connected with the pull rod mechanism (4), and the lower end of the closing spring is fixedly connected with the plug seat (3 b).

6. A high pressure normally open slam shut solenoid as claimed in claim 5 wherein: through-hole (8a) have been seted up to coupling nut (8) upper end, the lower extreme pass through the screw thread with main part (2c) are connected, and one side of this coupling nut (8) is run through and has been seted up pressure release hole (8b), plug seat (3b) pass through-hole (8a) swing joint, and the bottom of plug seat (3b) is equipped with card portion of holding (31b) to the evagination, can hold when plug seat (3b) upward movement in on the inner wall of coupling nut (8).

7. A high pressure normally open slam shut solenoid as claimed in claim 5 wherein: pull rod mechanism (4) include handle bar (4a), return spring (4b) and handle (4c), handle (4c) are connected and are fixed in the upper end of handle bar (4a), the lower extreme of handle bar (4a) passes mounting bracket (6) and connecting rod (3d) and with close spring (3c) fixed connection, return spring (4b) cover is located the lower extreme of handle bar (4 a).

8. A high pressure normally open slam shut solenoid as claimed in claim 7 wherein: from supreme having down seted up in mounting bracket (6) activity chamber (6a), first cavity (6b), second cavity (6c) and third cavity (6d) with activity chamber (6a) intercommunication are seted up in proper order to the upper end, handle pole (4a) install in mounting bracket (6), and the lower extreme of handle pole (4a) is protruding to be equipped with spacing platform (4d), return spring (4b) install in on handle pole (4a), and the lower extreme support in on spacing platform (4d), the upper end be located and support in on the inner wall of first cavity (6b), be equipped with sealing washer (7) and sealing washer nut (9) in proper order in second cavity (6c) and third cavity (6d), just be equipped with between handle (4c) and sealing washer nut (9) spacing platform (4 d).

9. A high pressure normally open slam shut solenoid as claimed in claim 8 wherein: stop gear (5) include coil (5a), no magnet tube (5b), move iron core (5c) and move iron core spring (5d), coil (5a) install in the one end of no magnet tube (5b), just the other end of no magnet tube (5b) is fixed install in on mounting hole (6e) that mounting bracket (6) one side was seted up, move iron core (5c) activity install in no magnet tube (5b), and move the one end of iron core (5c) through moving iron core spring (5d) with no magnet tube (5b) inner wall connection, the other end is protruding to be equipped with and to hold block (5e), one side of connecting rod (3d) of end cap mechanism (3) corresponds it holds block (5e) and has seted up and hold groove (31 d).

10. A high pressure normally open slam shut solenoid as claimed in claim 9 wherein: the upper end of the coil (5a) is fixedly arranged on the non-magnetic pipe (5b) through a coil nut (5e), and a sealing ring (7) is arranged at the joint of the coil (5a) and the non-magnetic pipe (5 b).