CN209876109U - High-temperature medium electromagnetic valve - Google Patents
High-temperature medium electromagnetic valve Download PDFInfo
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- CN209876109U CN209876109U CN201920789032.2U CN201920789032U CN209876109U CN 209876109 U CN209876109 U CN 209876109U CN 201920789032 U CN201920789032 U CN 201920789032U CN 209876109 U CN209876109 U CN 209876109U
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- valve
- heat insulation
- high temperature
- solenoid valve
- rod
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Abstract
The utility model provides a high temperature medium solenoid valve, including the casing, be equipped with case I in the casing, casing and articulate, the joint in be equipped with vacuum heat insulation device, be equipped with case II in the vacuum heat insulation device, case II includes pilot valve and valve rod, the pilot valve is articulated with the valve rod, pilot valve and the cooperation of case I. The utility model has the advantages that: the structure is designed into a pilot mode, and the weight of the electromagnet can be reduced under the condition that the valve core I can be opened and closed; the valve core II is detachable, and can be quickly replaced when the service life or fault damage of the sealing pair of the electromagnetic valve is reached; the pilot valve is guided by the inner circle of the piston, so that the direct centering of the pilot valve hole is realized, and the leakage amount of the valve is greatly reduced; the vacuum heat insulation can prevent the heat of the lower end from being transferred to the electromagnet part, and the coil assembly is effectively protected.
Description
Technical Field
The utility model relates to a solenoid valve especially indicates a high temperature medium solenoid valve.
Background
The medium of the high-temperature medium electromagnetic valve can reach the ultrahigh temperature of 1200 ℃, the opening of the valve is changed continuously in the opening and closing process, and complicated flowing states such as vortex, secondary flow and the like are easily generated, and the flowing states can cause the failure of the valve and cause safety accidents. And because the valve contacts high-temperature medium in use, the high temperature causes thermal deformation and thermal stress of the valve, and the stress concentration has great influence on the service life of the valve. The phenomena of unstable performance such as blocking, failure in opening and closing, increase of leakage amount and the like can occur after the high-temperature electromagnetic valve is frequently used in a working system for a long time.
Meanwhile, the medium of the high-temperature medium electromagnetic valve can reach ultrahigh temperature of 1200 ℃, the electromagnet in general design is rigidly connected with the valve body, the enameled wire in the electromagnet can bear the high temperature of 120 ℃ at most, once the temperature is higher than 120 ℃, the insulating layer of the enameled wire is dissolved, copper wires in the enameled wire are mutually short-circuited to cause burning out of the electromagnet, and the medium of the existing electromagnetic valve and the electromagnet have poor heat insulation effect, so that the enameled wire is easy to melt, and further optimization is needed.
SUMMERY OF THE UTILITY MODEL
The utility model provides a high temperature medium solenoid valve has solved the easy trouble of current solenoid valve, has insulated from heat poor problem.
The technical scheme of the utility model is realized like this: a high-temperature medium electromagnetic valve comprises a shell, wherein a valve core I is arranged in the shell, the shell is connected with a connector, a vacuum heat insulation device is arranged in the connector, a valve core II is arranged in the vacuum heat insulation device, the valve core II comprises a guide valve and a valve rod, the guide valve is hinged with the valve rod, and the guide valve is matched with the valve core I.
The vacuum heat insulation device comprises a heat insulation block, a valve core II is arranged in the heat insulation block, and a vacuum cavity is formed between the heat insulation block and the joint.
And two ends of the heat insulation block are welded on the joint.
The heat insulation block is cylindrical, a valve core hole is formed in the center of the heat insulation block, an annular groove is formed in the outer side of the heat insulation block, and a vacuum cavity is formed between the annular groove and the joint.
And the outer side of the shell is provided with radiating fins.
The pilot valve include connecting portion, cylinder portion and ball portion, connecting portion and valve rod articulated, connecting portion are connected with cylinder portion, cylinder portion and ball portion are connected, ball portion and the cooperation of case I.
The pilot valve is connected with the valve rod through a positioning pin.
And a labyrinth seal is arranged on the end face of the valve core I, which is in contact with the shell.
And a filter is arranged at the inlet of the shell.
The connector is connected with the coil assembly, an adjusting nut, a spring, an ejector rod and an armature are arranged in the coil assembly, the adjusting nut is connected with the coil assembly, the spring is arranged between the adjusting nut and the ejector rod, the ejector rod is matched with the armature, and the armature is connected with the valve rod.
The utility model has the advantages that:
1, the structure is designed into a pilot type, and the weight of the electromagnet can be reduced under the condition that the valve core I can be opened and closed;
2, the valve core II is detachable, and can be quickly replaced when the service life or fault damage of the sealing pair of the electromagnetic valve is reached;
3, the pilot valve is guided by the inner circle of the piston to realize direct centering of the pilot valve hole, so that the leakage rate of the valve is greatly reduced;
4 the vacuum heat insulation can prevent the heat of the lower end from being transferred to the electromagnet part, and the coil assembly is effectively protected.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1-filter, 2-shell, 3-valve core I, 4-valve core II, 5-joint, 6-locking nut I, 7-locking nut II, 8-armature, 9-cover shell, 10-ejector rod, 11-coil component, 12-adjusting nut, 13-O-shaped ring I, 14-spring, 15-O-shaped ring II, 16-protective cap, 17-cooling fin and 18-vacuum heat insulation device.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.
As shown in fig. 1, the high-temperature medium solenoid valve comprises a shell 2, a joint 5 and a coil assembly 11, wherein an internal thread at the upper end of the shell 2 is connected with an external thread at the lower end of the joint 5, an external thread at the upper end of the joint 5 is connected with an internal thread at the lower end of the coil assembly 11, the joint 5 and the coil assembly 11 are locked by a locking nut I6, an O-shaped ring II15 for sealing is arranged between the joint 5 and the coil assembly 11, and a cover 9 is arranged outside the coil assembly 11.
The filter 1 is arranged at the inlet of the shell 2, the protective cap 16 covers the outside of the inlet of the shell 2, the valve core I3 is arranged in the shell 2, the valve core I3 is in sealing fit with the outlet of the shell 2, the labyrinth seal is arranged on the end face of the valve core I3, which is in contact with the shell 2, and the cooling fins 17 are arranged on the outer side of the shell 2.
Be equipped with vacuum insulation device 18 in the joint 5, vacuum insulation device 18 includes the thermoblock, and the both ends welding of thermoblock is on joint 5, and the thermoblock is cylindric, and the center of thermoblock is equipped with the case hole, and the outside of thermoblock is equipped with a plurality of annular, forms the vacuum cavity between annular and the joint 5.
The valve core II4 is arranged in the valve core hole, the valve core II4 comprises a guide valve and a valve rod, the guide valve comprises a connecting part, a cylindrical part and a ball part, the connecting part is hinged with the valve rod through a positioning pin, the connecting part is connected with the cylindrical part, the cylindrical part is connected with the ball part, and the ball part is matched with the valve core I3.
An adjusting nut 12, a spring 14, an ejector rod 10 and an armature 8 are arranged in a coil assembly 11, a valve rod is in threaded connection with the armature 8, the valve rod and the armature 8 are locked through a locking nut II7, the armature 8 is matched with the ejector rod 10, the spring 14 is arranged between the ejector rod 10 and the adjusting nut 12, the adjusting nut 12 is in threaded connection with the coil assembly 11, and an O-shaped ring I13 for sealing is arranged between the adjusting nut 12 and the coil assembly 11.
The working principle of the utility model
The utility model discloses the solenoid valve is in normally closed state, and when the valve need be opened, coil pack circular telegram, armature received the electromagnetic force, overcome the elasticity of spring, and armature area case II rises, and case I department is because there is ascending trend in the pressure differential, and case II rises the back, and case I lacks the support and rises in step, and import and export in the casing I form the route, and the solenoid valve opens.
The utility model has the structural characteristics
1 weight reduction
The structure is designed into a pilot type, and the valve port of the pilot valve can be reduced as much as possible under the condition that the valve core I can be opened and closed, so that the medium force borne by the pilot valve is reduced, and the electromagnetic suction force is reduced. As the electromagnetic attraction force decreases, the weight of the electromagnet portion can be reduced. The weight of the electromagnet is reduced, so that the weight of the valve is reduced.
2 sealing structure
The combined valve core II mainly comprises a pilot valve, a valve rod, a positioning pin and the like. The main purpose of the structure is to ensure that all parts of the combined valve core II can be integrated after assembly, and the quick replacement can be realized when the service life or the failure damage of the sealing pair of the electromagnetic valve is reached.
The key technology of adopting the structure is how to ensure that the valve can reliably act within the specified action life time and has no blockage phenomenon. The optimal clearance between the piston and the sleeve is found through theoretical analysis and a verification test, and the reliable action of the electromagnetic valve can be ensured. The used pilot type high-temperature electromagnetic valve is disassembled and checked, and the problem is mainly found on a pilot valve according to the judgment of the damage condition of related parts, the main reason is that the pilot valve and a pilot hole are indirectly centered through links such as a valve rod, the center of the pilot valve is often not aligned with the center of the pilot valve hole during resetting due to impact vibration during discharging of working media, a plurality of valve rods and the pilot valve are connected by adopting a rolling edge for compensating the centering deviation, the drawing specifies that the pilot valve has a tiny swinging quantity for the valve rod, but the pilot valve is difficult to control during manufacturing, sometimes the pilot valve cannot swing due to too tight rolling, sometimes the swinging quantity is too large due to too loose rolling, sometimes the virtual rolling is performed, namely, the swinging quantity meets the requirement at first glance, but the swinging quantity is increased due to loose after operating for a plurality of times, when the swinging quantity is too large, the resetting performance is poor, a sealing strip is often excessively deviated, and the damage is, causing leakage. Even if the tip accidentally hits the outside of the sealing surface, it cannot be reset, resulting in a valve-closing failure. Therefore, the product improves the design of the pilot valve, leads the pilot valve to be guided by the inner circle of the piston and realizes the direct centering of the pilot valve hole; in addition, the guide valve and the valve rod are connected by adopting a pin, and the fit clearance between the pin and the guide valve hole can be controlled. Tests have shown that this improvement alone results in a significant reduction in the amount of leakage from the valve.
After the pilot valve is improved, the main contradiction of reaching the sealing index is transferred to the aspect of the valve core I. In order to improve the sealing performance of the valve core I, on one hand, the width of the sealing surface of the valve seat is properly reduced on the premise of ensuring the service life of the sealing surface, and on the other hand, after the thermal expansion factor is considered, the fit clearance between the piston and the bush is properly reduced in an allowable range so as to improve the centering of the sealing pair of the valve core I. After the fit clearance is reduced, the clearance of the piston ring also needs to be correspondingly adjusted so as to ensure the action performance of the valve core I. After the valve core I is improved, the sealing performance of the valve is further improved. In addition, a labyrinth seal structure is additionally arranged on the valve core I, and because the medium is suddenly expanded after flowing into the groove cavity from the channel and suddenly reduced when flowing out of the medium groove cavity and entering the channel, the resistance is suddenly increased. A series of large resistances forces the leakage to drop sharply.
3 control of heat conduction
Because the medium of the electromagnetic valve is ultrahigh temperature of 1200 ℃, the electromagnet and the valve body are rigidly connected in general design, the enameled wire in the electromagnet can bear the high temperature of 120 ℃ at most, and once the temperature is higher than 120 ℃, the insulating layer of the enameled wire is dissolved, copper wires in the enameled wire are mutually short-circuited to cause the burning-out of the electromagnet. Therefore, the heat conducting structure of the utility model is optimized from three aspects, firstly, the radiating fins are arranged outside the shell, and the heat of the surface of the product can be transmitted as fast as possible; secondly, a vacuum heat insulation device is arranged in the joint, and two ends of the vacuum heat insulation device are welded and the interior of the vacuum heat insulation device is vacuumized, so that heat at the lower end can be prevented from being transferred to the electromagnet part; thirdly, the clearance between the valve rod of the combined valve core II and the valve core hole is reduced as much as possible, and the heat of the medium is prevented from being transferred to the electromagnet part.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a high temperature medium solenoid valve, includes casing (2), is equipped with case I (3) in casing (2), and casing (2) are connected its characterized in that with joint (5): the vacuum heat insulation device (18) is arranged in the connector (5), the valve core II (4) is arranged in the vacuum heat insulation device (18), the valve core II (4) comprises a guide valve and a valve rod, the guide valve is hinged with the valve rod, and the guide valve is matched with the valve core I (3).
2. A high temperature media solenoid valve as claimed in claim 1 wherein: the vacuum heat insulation device (18) comprises a heat insulation block, a valve core II (4) is arranged in the heat insulation block, and a vacuum cavity is formed between the heat insulation block and the joint (5).
3. A high temperature media solenoid valve as claimed in claim 2 wherein: and two ends of the heat insulation block are welded on the joint (5).
4. A high temperature media solenoid valve as claimed in claim 2 wherein: the heat insulation block is cylindrical, a valve core hole is formed in the center of the heat insulation block, an annular groove is formed in the outer side of the heat insulation block, and a vacuum cavity is formed between the annular groove and the joint (5).
5. A high temperature medium solenoid valve according to claim 1 or 2, wherein: and the outer side of the shell (2) is provided with a radiating fin (17).
6. A high temperature media solenoid valve as claimed in claim 1 wherein: the pilot valve include connecting portion, cylinder portion and ball portion, connecting portion and valve rod are articulated, connecting portion and cylinder portion are connected, cylinder portion and ball portion are connected, ball portion and the cooperation of case I (3).
7. A high temperature media solenoid valve as claimed in claim 1 wherein: the pilot valve is connected with the valve rod through a positioning pin.
8. A high temperature media solenoid valve as claimed in claim 1 wherein: and a labyrinth seal is arranged on the end surface of the valve core I (3) which is in contact with the shell (2).
9. A high temperature media solenoid valve as claimed in claim 1 wherein: the inlet of the shell (2) is provided with a filter (1).
10. A high temperature media solenoid valve as claimed in claim 1 wherein: the connector (5) is connected with the coil assembly (11), an adjusting nut (12), a spring (14), an ejector rod (10) and an armature (8) are arranged in the coil assembly (11), the adjusting nut (12) is connected with the coil assembly (11), the spring (14) is arranged between the adjusting nut (12) and the ejector rod (10), the ejector rod (10) is matched with the armature (8), and the armature (8) is connected with the valve rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920789032.2U CN209876109U (en) | 2019-05-29 | 2019-05-29 | High-temperature medium electromagnetic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920789032.2U CN209876109U (en) | 2019-05-29 | 2019-05-29 | High-temperature medium electromagnetic valve |
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| Publication Number | Publication Date |
|---|---|
| CN209876109U true CN209876109U (en) | 2019-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920789032.2U Active CN209876109U (en) | 2019-05-29 | 2019-05-29 | High-temperature medium electromagnetic valve |
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| Country | Link |
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| CN (1) | CN209876109U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112483654A (en) * | 2020-10-27 | 2021-03-12 | 北京宇航系统工程研究所 | Quick response solenoid valve |
-
2019
- 2019-05-29 CN CN201920789032.2U patent/CN209876109U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112483654A (en) * | 2020-10-27 | 2021-03-12 | 北京宇航系统工程研究所 | Quick response solenoid valve |
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