阅读说明：本技术 一种耐高温电磁阀 (High-temperature-resistant electromagnetic valve ) 是由 丁强强 滕浩 廖祥 张浩翔 陈豪智 于 2019-10-18 设计创作，主要内容包括：本发明涉及电磁阀技术领域,具体为一种耐高温电磁阀,包括：电磁部、散热管、缓冲部、阀杆、阀座、阀瓣；所述缓冲部位于散热管一侧,与散热管相连通,缓冲部内部设有回位弹簧、回位顶杆,所述阀杆一端与衔铁固定,另一端位于散热管内,且连接有连接杆,连接杆延伸至阀座内部与阀瓣连接,所述连接杆上设有通孔,连通缓冲部与阀座的进口；本发明极大的减少了热气流进入电磁部,提高了电磁线圈的寿命。(The invention relates to the technical field of electromagnetic valves, in particular to a high-temperature resistant electromagnetic valve, which comprises: the electromagnetic part, the radiating pipe, the buffering part, the valve rod, the valve seat and the valve clack; the valve rod is connected with the valve clack, a through hole is formed in the connecting rod, and the connecting rod is communicated with inlets of the buffer part and the valve seat; the invention greatly reduces the hot air flow entering the electromagnetic part and improves the service life of the electromagnetic coil.)

1. A high temperature resistant solenoid valve comprising: the heat radiator comprises an electromagnetic part (1), a heat radiating pipe (2), a buffering part (3), a valve rod (4), a valve seat (5) and a valve flap (6);

the electromagnetic part (1) comprises: the electromagnetic valve comprises an outer shell (11), an inner shell (12), an electromagnetic coil (13), an upper stop seat (14), a lower stop seat (15) and an armature (16); the outer shell (11) is sleeved on the periphery of the inner shell (12), an electromagnetic coil (13) is arranged between the outer shell and the inner shell, an upper stop seat (14) is arranged on an opening at the upper end of the outer shell (11), the lower end of the upper stop seat (14) extends into the outer shell (11) and is blocked at the upper end of the inner shell (12), a lower stop seat (15) is fixedly arranged at the lower end of the inner shell (12), the lower stop seat (15) blocks the lower end of the inner shell (12), the upper stop seat (14), the lower stop seat (15) and the inner shell (12) form a closed cavity (17), and an armature (16) is arranged in the cavity (17);

the valve seat (5) is a three-way pipeline, and three openings are respectively an orifice (51), an inlet (52) and an outlet (53);

the radiating pipe (2) is fixedly arranged at the bottom end of the electromagnetic part (1), one end of the radiating pipe (2) is communicated with the cavity (17), and the other end of the radiating pipe (2) is fixed at the position of the hole edge of the throttling hole (51) of the valve seat (5);

the method is characterized in that:

the lateral wall of cooling tube (2) is provided with buffering portion (3), buffering portion (3) include: a shell (31), a return spring (32) and a return ejector rod (33); the shell (31) is arranged on the side wall of the radiating pipe (2) and is communicated with the interior of the radiating pipe (2), and the return ejector rod (33) is arranged in the shell (31) through a return spring (32);

one end of the valve rod (4) is fixed with the armature (16), the other end of the valve rod is positioned in the radiating pipe (2), the outer wall of the valve rod (4) is in a sliding fit state with the inner wall of the radiating pipe (2), one end of the valve rod (4) positioned in the radiating pipe (2) is fixedly provided with a connecting rod (41), the other end of the connecting rod (41) extends into the valve seat (5), the outer wall of the connecting rod (41) is fit with the inner wall of the radiating pipe (2) on one side opposite to the buffering part (3), a certain distance is kept between the inner wall of the radiating pipe (2) on the same side with the buffering part (3), the distance is communicated with the inside of the buffering part (3) to form a channel (21), a through hole (42) is formed in the position, close to the inlet (52) of the valve seat (5), of; the inner wall of cooling tube (2) is provided with sealed fixture block (22), sealed fixture block (22) are located between valve rod (4) and the intercommunication mouth that buffer portion (3) are located cooling tube (2), with connecting rod (41) slip laminating state.

2. A high temperature resistant solenoid valve as claimed in claim 1, wherein: and a gap (54) with a certain length is reserved between the part of the connecting rod (41) in the valve seat (5) and the side wall of the valve seat (5).

3. A high temperature resistant solenoid valve as claimed in claim 1, wherein: the through hole (42) of the connecting rod (41) is spirally raised, one end of the through hole (42) is over against the inlet (52) of the valve seat (5), and the other end of the through hole (42) is over against the inlet position of the buffer part (3).

Technical Field

The invention relates to the technical field of electromagnetic valves, in particular to a high-temperature resistant electromagnetic valve.

Background

Attitude control thrust requirements vary from milli-newtons to thousands of newtons as the space mission develops. At present, the electromagnetic valve is commonly used for controlling the thruster to work, so that the effect of adjusting the thrust of the thruster from time to time is achieved. When the high-temperature medium passes through the electromagnetic valve, the heat emitted by the high-temperature medium is transferred to the electromagnetic coil through the armature, so that the temperature of the electromagnetic coil is continuously increased until the insulating outer skin of the electromagnetic coil is melted, the electromagnetic coil is short-circuited and burned out, the electromagnetic coil is scrapped, and the high-temperature thruster cannot normally work.

Therefore, improvements are made to the above problems.

Disclosure of Invention

Accordingly, the present invention has been made in view of the above problems, and the present invention solves the problem in the prior art that the solenoid coil of the solenoid valve is easily burned out. The invention realizes the aim through the following technical scheme:

a high temperature resistant solenoid valve comprising: the electromagnetic part, the radiating pipe, the buffering part, the valve rod, the valve seat and the valve clack; the utility model discloses a valve seat, including valve rod, valve seat, valve rod and valve rod, the buffer site is located cooling tube one side, is linked together with the cooling tube, and inside return spring, the return ejector pin of being equipped with of buffer site, valve rod one end is fixed with armature, and the other end is located the cooling tube, and is connected with the connecting rod, and the connecting rod extends to the disk seat inside and is connected with the valve clack, be.

The invention has the following beneficial effects:

1. according to the invention, due to the arrangement of the buffer part and the channel, a large amount of high-temperature gas is concentrated in the channel, the gas flowing into the cavity is very little, and the high-temperature gas discharges heat in the channel through the radiating pipe, so that the heat dissipated by the armature is greatly reduced, the influence on the temperature of the electromagnetic coil in the use process is greatly reduced, and the service life of the electromagnetic coil is prolonged.

2. In the process of opening the valve clack, part of gas enters the channel through the through hole and enters the buffer part along the channel, and downward acting force is generated on the valve clack along with the increase of the air pressure of the channel, so that the opening of the valve clack is a slow process, and the stable operation of the propeller is facilitated.

3. When the valve clack is in a closed state, gas flows into the channel from the through hole, flows upwards into the buffer part along the channel, and jacks up the return ejector rod towards the left side, and as the gas in the channel increases, the pressure intensity increases, and a downward acting force is generated on the top of the valve clack, so that the sealing effect of the valve clack is better.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is an enlarged detail arrangement of the valve seat of the present invention.

Fig. 3 is a schematic structural view of a spiral through hole in an embodiment of the present invention.

Detailed Description

Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that those embodiments can be easily implemented by those having ordinary skill in the art to which the present invention pertains. However, the present invention may be embodied in many different forms and is not limited to the embodiments described below. In addition, in order to more clearly describe the present invention, components not connected to the present invention will be omitted from the drawings.

As shown in fig. 1-2, a high temperature resistant solenoid valve includes: the electromagnetic valve comprises an electromagnetic part 1, a radiating pipe 2, a buffering part 3, a valve rod 4, a valve seat 5, a valve clack 6 and a pipe joint 7;

the electromagnetic section 1 includes: an outer shell 11, an inner shell 12, an electromagnetic coil 13, an upper stop seat 14, a lower stop seat 15 and an armature 16; the outer shell 11 is sleeved on the periphery of the inner shell 12, an electromagnetic coil 13 is arranged between the outer shell and the inner shell, an upper stop seat 14 is arranged on an opening at the upper end of the outer shell 11, the lower end of the upper stop seat 14 extends into the outer shell 11 and is blocked at the upper end of the inner shell 12, a lower stop seat 15 is fixedly arranged at the lower end of the inner shell 12, the lower stop seat 15 blocks the lower end of the inner shell 12, the upper stop seat 14, the lower stop seat 15 and the inner shell 12 form a cavity 17, and the armature 16 is arranged in the cavity 17;

the radiating pipe 2 is fixedly arranged at the bottom end of the electromagnetic part 1, one end of the radiating pipe 2 is communicated with the cavity 17, the other end of the radiating pipe 2 is fixed at the position of the hole edge of the throttling hole 51 of the valve seat 5, and the side wall of the radiating pipe 2 is provided with the buffering part 3;

the buffer portion 3 includes: a shell 31, a return spring 32 and a return ejector rod 33; the shell 31 is arranged on the side wall of the radiating pipe 2 and is communicated with the interior of the radiating pipe 2, and the return mandril 33 is arranged in the shell 31 through the return spring 32;

the top end of the valve rod 4 is fixed with the bottom of the armature 16, the valve rod 4 vertically extends downwards to the interior of the radiating pipe 2, the outer wall of the valve rod 4 is in a sliding fit state with the inner wall of the radiating pipe 2, the bottom of the valve rod 4 is fixedly provided with a connecting rod 41, the connecting rod 41 vertically extends downwards to the interior of the valve seat 5, the outer wall of the connecting rod 41 is fit with the inner wall of the right half of the radiating pipe 2, a certain interval is kept between the outer wall of the connecting rod 41 and the inner wall of the left half of the radiating pipe 2, the interval is communicated with the interior of the buffer part 3 to form a channel 21, a through; the inner wall of the radiating pipe 2 above the channel 21 is provided with the sealing fixture block 22, and the sealing fixture block 22 is in a sliding fit state with the side wall of the connecting rod 41, so that the connecting rod 41 is stable and does not deviate in the upward moving process, and meanwhile, the influence of gas in the channel 21 on the bottom of the valve rod 4 is blocked;

the high-temperature gas flows upwards into the buffer part 3 along the channel 21 through the through hole 42, enters the blind hole of the return ejector rod 33, and jacks up the return ejector rod 33 to the left side, so that the return ejector rod 33 and the return spring 32 are matched to play a role of a pilot valve, the valve clack 6 is arranged at the bottom of the connecting rod 41 and above the outlet 53 of the valve seat 5 and used for plugging the outlet 53, the inlet 52 of the valve seat 5 is communicated with the pipe joint 7, and the pipe joint 7 is internally provided with a filter element 71;

under the condition that the electromagnetic coil 13 is not electrified, high-temperature gas flows in from the inlet 52 of the valve seat 5 through the filter element 71 in the pipe joint 7, enters the through hole 42 of the connecting rod 41, flows upwards into the buffer part 3 along the channel 21, jacks up the return ejector rod 33 towards the left side, increases the pressure along with the increase of the gas in the channel 21, generates downward acting force on the top of the valve clack 6, and further enables the sealing effect of the valve clack 6 to be better;

when the electromagnetic coil 13 is energized, the armature 16 moves upward under the action of the electromagnetic coil 13, the valve flap 6 is driven to move upward, the outlet 53 of the valve seat 5 is opened, high-temperature gas is discharged from the outlet 53, in the process, part of the gas flows into the through-holes 42, enters the buffer portion 3 along the passage 21, and, as the gas pressure of the passage 21 increases, generates downward acting force on the valve clack 6, so that the opening of the valve clack 6 is a slow process, is beneficial to the stable operation of the propeller, in both the case of energizing and non-energizing the electromagnetic coil 13, due to the arrangement of the valve stem 4 and the connecting rod 41, the gas flowing into the chamber 17 is very little, the high-temperature gas is substantially concentrated in the passage 21, and the heat is discharged through the radiating pipe 2, so that the heat radiated to the armature 16 is greatly reduced, the influence on the temperature of the electromagnetic coil 13 in the use process is greatly reduced, and the service life of the electromagnetic coil 13 is prolonged.

As shown in fig. 2, it is preferable that a gap 54 with a certain length is left between the portion of the connecting rod 41 inside the valve seat 5 and the right side wall of the valve seat 5, and this arrangement enables air to flow into the passage 21 during the upward movement of the connecting rod 41, so as to maintain a certain pressure in the passage 21.

As shown in fig. 3, preferably, as an embodiment, the through hole 42 of the connection rod 41 is formed in a spiral shape, one end of the through hole 42 faces the inlet 52 of the valve seat 5, the other end of the through hole 42 faces the inlet position of the buffer portion 3, high-temperature gas enters the through hole 42 along the inlet 52, the gas spirals and gradually fills the passage 21 after exiting from the through hole 42, and the spiral arrangement of the through hole 42 prolongs the flow path of the gas, so that the heat dissipation of the gas through the heat dissipation pipe 2 is more sufficient.

The working principle of the first embodiment is as follows:

when the electromagnetic coil 13 is electrified, the armature 17 moves upwards under the action of the electromagnetic coil 13 to drive the valve clack 6 to move upwards, so that the outlet 53 of the valve seat 5 is opened, high-temperature gas is discharged from the outlet 53, in the process, part of the gas flows into the through hole 42 and enters the buffer part 3 along the channel 21, and a downward acting force is generated on the valve clack 6 along with the increase of the air pressure of the channel 21, so that the opening of the valve clack 6 is a slow process, and the stable operation of the propeller is facilitated. Under the condition that the electromagnetic coil 13 is not electrified, high-temperature gas flows in from the inlet 52 of the valve seat 5 through the filter element 71 in the pipe joint 7, enters the through hole 42 of the connecting rod 41, flows upwards into the buffer part 3 along the channel 21, jacks up the return ejector rod 33 towards the left side, and increases the pressure along with the increase of the gas in the channel 21, so that downward acting force is generated on the top of the valve clack 6, and the sealing effect of the valve clack 6 is further better.