CN110671535B

CN110671535B - High-temperature-resistant electromagnetic valve

Info

Publication number: CN110671535B
Application number: CN201910991026.XA
Authority: CN
Inventors: 丁强强; 滕浩; 廖祥; 张浩翔; 陈豪智
Original assignee: Chongqing Kaichuang Satellite Technology Co Ltd
Current assignee: Chongqing Kaichuang Satellite Technology Co., Ltd
Priority date: 2019-10-18
Filing date: 2019-10-18
Publication date: 2021-02-05
Anticipated expiration: 2039-10-18
Also published as: CN110671535A

Abstract

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 valve seat, the valve clack, the vent pipe and the magnetic fluid; the radiating pipe is arranged between the electromagnetic part and the valve seat, the vent pipe is arranged in the radiating pipe and is coaxial with the radiating pipe, the radiating pipe is arranged between the electromagnetic part and the valve seat, and the radiating pipe is filled with magnetic fluid and attracts the magnetic fluid to move by means of magnetic force generated by the electromagnetic part so as to drive the magnetic valve clack to open; the invention solves the problem that the electromagnetic valve is melted at high temperature.

Description

High-temperature-resistant electromagnetic valve

Technical Field

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

Background

When the high-temperature electromagnetic valve is used, the energizing coil is used for excitation to generate electromagnetic force so as to open or close the valve and change the flowing direction of fluid, thereby achieving the purpose of changing the moving direction of the fluid by the actuating element.

However, when high-temperature fluid passes through the valve body of the solenoid valve, heat emitted by the high-temperature medium is transferred to the solenoid coil, and when the temperature of the medium exceeds the heating limit temperature of the solenoid coil, the solenoid coil may melt, thereby affecting the normal operation of the solenoid valve.

Therefore, improvements are made to the above problems.

Disclosure of Invention

Therefore, the invention aims to solve the problem that the electromagnetic coil of the electromagnetic valve in the prior art is easy to burn out, and is realized by the following technical scheme:

a high temperature resistant solenoid valve, comprising: the electromagnetic part, the radiating pipe, the valve seat, the valve clack, the vent pipe and the magnetic fluid;

the air pipe is positioned in the radiating pipe and is coaxial with the radiating pipe, the radiating pipe is arranged between the electromagnetic part and the valve seat, and the radiating pipe is filled with magnetic fluid, namely the magnetic fluid replaces the traditional rigid valve rod, and the magnetic fluid is attracted to move by virtue of the magnetic force generated by the electromagnetic part, so that the valve clack is driven to open; because the magnetic fluid is full of the radiating pipe and the heat conductivity of the magnetic fluid, the heat in the ventilating pipe can be transferred to the radiating pipe, and the radiating pipe can be made into a special shape which is beneficial to radiating or is required by saving space due to the liquid property of the magnetic fluid.

The invention has the following beneficial effects:

1. the radiating pipe and the vent pipe are arranged in a zigzag manner, so that the circulation path of gas is prolonged, and the gas is fully radiated before entering the vent pipe in the cavity, so that the heat radiated to the armature is reduced, the temperature of the electromagnetic coil in the use process is reduced, the possibility of melting the insulating sheath of the electromagnetic coil in the use process is reduced, and the possibility of using the electromagnetic coil in a high-temperature environment is improved;

2. according to the invention, the vent pipe is arranged in the heat dissipation pipe, and the magnetic fluid is accommodated in the heat dissipation pipe, so that the magnetic fluid enhances the sealing property in the heat dissipation pipe, high-temperature gas flows along the vent pipe in a concentrated manner, and the heat conduction in the cavity is reduced;

3. the invention drives the valve clack to open and close through the flow of the magnetic fluid, so that the valve clack is slowly opened and closed, a buffer process is provided for the discharge or closing of high-temperature gas from the outlet, and the stable operation of the propeller is facilitated.

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 overall structure diagram of a second embodiment of the present invention.

Fig. 4 is an enlarged detail arrangement diagram of a valve seat according to a second embodiment of the 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.

Example one

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

the electromagnetic section 1 includes: 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, a return spring 16, a return ejector rod 17 and an armature 18;

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 return spring 16 and a return ejector rod 17 which are used for pushing the armature 18 to an initial position are arranged in the upper stop seat 14, 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 19, and the armature 18 is arranged;

the both ends of cooling tube 2 are vertical, the tortuous setting in middle part, and 2 peripheries of cooling tube set up fin 21, and its top and 19 intercommunications of cavity, its bottom mounting are in the hole edge position department of the orifice 31 of disk seat 3, and valve clack 4 sets up the lower extreme in cooling tube 2, and valve clack 4 includes: a sealing plug 41, a connecting portion 42, and a main body 43; the sealing plug 41 is arranged above the outlet 32 of the valve seat 3 and used for plugging the outlet 32, the main body 43 is arranged at the lower end in the radiating pipe 2, the top of the main body 43 is made of magnetic material, the main body 43 is connected with the sealing plug 41 through the connecting part 42, the connecting part 42 is provided with a right-angled through hole 44, one end of the through hole 44 extends through the main body 43, the other end of the through hole 44 is communicated with the inlet 33, the vent pipe 5 is arranged in the radiating pipe 2, one end of the vent pipe 5 extends into the through hole 44, the other end of the vent pipe passes through the armature 18 and extends to the lower end of the return ejector rod 17, the magnetic fluid 6 is arranged in the radiating; high-temperature gas flows along the vent pipe 5, flows out of the upper port of the vent pipe 5, enters the blind hole at the bottom of the return ejector rod 17, and jacks up the return ejector rod 17, so that the return ejector rod 17 and the return spring 16 are matched to play a role of a pilot valve, a downward acting force is applied to the armature 18, and the rising height of the armature 18 is controlled;

the inlet 33 of the valve seat 3 is communicated with a pipe joint 7, and a filter element 71 is arranged in the pipe joint 7;

under the condition that the electromagnetic coil 13 is not electrified, high-temperature gas flows in from the inlet 33 of the valve seat 3 through the filter element 71 in the pipe joint 7, enters the breather pipe 5 and flows along the breather pipe 5, and due to the same bent structure of the breather pipe 5 and the radiating pipe 2, the flow path of the gas is prolonged, so that the gas is fully radiated before entering the breather pipe 5 in the cavity 19, the heat radiated to the armature 18 is reduced, the possibility of melting the electromagnetic coil 13 and the insulating sheath thereof in the use process is reduced, and the possibility of using the electromagnetic coil 13 in a high-temperature environment is improved;

when the electromagnetic coil 13 is electrified, the armature 18 moves upwards under the action of the electromagnetic coil 13, so that the magnetic fluid 6 is driven to flow along the radiating pipe 2 and move upwards, the valve clack 4 is driven to move upwards, the outlet 32 of the valve seat 3 is opened, and high-temperature gas is discharged from the outlet 32.

Preferably, as an implementation mode, the outer periphery of the cavity 19 is provided with a heat insulation layer, and the heat transmission in the cavity 19 to the electromagnetic coil 13 is further reduced.

Preferably, as an implementation mode, the sealing plug 41 of the valve flap is made of refractory fiber, which is a highly efficient heat-insulating material, and has the characteristics of general fiber, such as softness, high strength, and the like, so as to improve the sealing performance to the valve seat outlet 32.

The working principle of the first embodiment is as follows:

when the electromagnetic coil 13 is electrified, the armature 18 moves upwards under the action of the electromagnetic coil 13 to drive the magnetic fluid 6 to flow along the radiating pipe 2 and move upwards, so as to drive the valve flap 4 to move upwards slowly, so that the outlet 32 of the valve seat 3 is opened slowly, high-temperature gas is discharged slowly from the outlet 32, under the condition that the electromagnetic coil 13 is not electrified, the high-temperature gas flows in from the inlet 33 of the valve seat 3 through the filter element 71 in the pipe joint 7, enters the ventilating pipe 5 and flows along the ventilating pipe 5, due to the same bending structure of the ventilating pipe 5 and the radiating pipe 2, the gas flow path is prolonged, so that the gas is fully radiated before entering the ventilating pipe 5 in the cavity 19, the heat radiated by the armature 18 is reduced, the temperature of the electromagnetic coil 13 in the use process is reduced, and the possibility of melting of an insulating sheath of the electromagnetic coil 13 in the use, the service life of the electromagnetic coil 13 in a high-temperature environment is prolonged, wherein gas flows to the bottom of the return rod along the vent pipe 5 to jack up the return ejector rod 17 upwards, the gas pressure at the upper part of the cavity 19 is increased along with the increase of the gas, and the armature 18 is further pressed, so that the valve clack 4 is pressurized, and the sealing effect is better.

Example two:

the difference from the first embodiment is that, as shown in fig. 3, a cooling pipe 8 is disposed at the periphery of the first heat dissipation pipe 02, and other components and connection manners are the same as those in the first embodiment, and are not described again in this embodiment, and the working principle is not described again at the same time;

as shown in fig. 3 and 4, one end of the cooling pipe 8 is disposed along the bottom sidewall of the first radiating pipe 02, and extends upwards along the bending path of the first radiating pipe 02 to surround the first chamber 019, and then extends downwards along the first chamber 019 to the other sidewall of the first radiating pipe 02, wherein one end of the cooling pipe 8 is a liquid inlet 81, and the other end of the cooling pipe 8 is a liquid outlet 82, and the cooling liquid flows in the cooling pipe 8 in a circulating manner, and when the high-temperature gas passes through the first vent pipe 05, the cooling liquid flowing in the cooling pipe 8 rapidly cools the first radiating pipe 02 and the first chamber 019, so as to ensure the normal operation of the first solenoid 013.

Claims

1. A high temperature resistant solenoid valve comprising: the electromagnetic radiating pipe comprises an electromagnetic part (1), a radiating pipe (2), a valve seat (3), a valve clack (4), a vent pipe (5) and a magnetic fluid (6);

the electromagnetic part (1) comprises: the device comprises an outer shell (11), an inner shell (12), an electromagnetic coil (13), an upper stop seat (14), a lower stop seat (15), a return spring (16), a return ejector rod (17) and an armature (18); the electromagnetic coil (13) is clamped between the outer shell (11) and the inner shell (12), the upper stop seat (14) and the lower stop seat (15) are fixedly arranged on the upper portion of the outer shell (11) and the lower portion of the inner shell (12) respectively, a return spring (16) and a return ejector rod (17) are arranged in the upper stop seat (14), and the armature (18) is located in a closed chamber (19) defined by the outer shell (11), the inner shell (12), the upper stop seat (14) and the lower stop seat (15);

the valve seat (3) comprises: an orifice (31), an outlet (32), and an inlet (33);

the method is characterized in that:

one end of the radiating pipe (2) penetrates through the lower stop seat (15) to be communicated with the cavity (19), and the other end of the radiating pipe is communicated with the throttling hole (31) of the valve seat (3);

the valve flap (4) comprises: a sealing plug (41), a connecting part (42) and a main body (43); the sealing plug (41) is positioned outside the outlet (32) of the valve seat (3), the main body (43) is arranged at one end, close to the valve seat (3), of the radiating pipe (2), the top of the main body (43) is made of magnetic materials, the connecting part (42) is connected with the sealing plug (41) and the main body (43), a right-angle-shaped through hole (44) is formed in the connecting part (42), one end of the through hole (44) extends through the main body (43), and the other end of the through hole is communicated with the inlet (33);

the vent pipe (5) is arranged in the radiating pipe (2), one end of the vent pipe (5) extends into the through hole (44), and the other end of the vent pipe passes through the armature (18) and extends to the front of the return ejector rod (17);

the magnetic fluid (6) is filled in the radiating pipe (2) and between the armature (18) and the radiating pipe (2) in the cavity (19).

2. A high temperature resistant solenoid valve as claimed in claim 1, wherein: the radiating pipe (2) and the vent pipe (5) are arranged in a zigzag manner.

3. A high temperature resistant solenoid valve as claimed in claim 2, wherein: fins (21) are arranged on the outer wall surface of the radiating pipe (2).

4. A high temperature resistant solenoid valve as claimed in claim 1, wherein: the outer wall of cooling tube (2) even has cooling tube (8), the one end of cooling tube (8) is close to the one end lateral wall setting of disk seat (3) along cooling tube (2) to extend along cooling tube (2), pass and end seat (15) and encircle cavity (19) down, extend to the one end that cooling tube (2) is close to disk seat (3) along cavity (19), cooling tube (2) again, the one end of cooling tube (8) is inlet (81), and the other end is liquid outlet (82), is filled with the coolant liquid in cooling tube (8).