CN213018005U - Dual-redundancy electromagnetic valve - Google Patents
Dual-redundancy electromagnetic valve Download PDFInfo
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- CN213018005U CN213018005U CN202022084644.7U CN202022084644U CN213018005U CN 213018005 U CN213018005 U CN 213018005U CN 202022084644 U CN202022084644 U CN 202022084644U CN 213018005 U CN213018005 U CN 213018005U
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Abstract
The utility model discloses a dual-redundancy solenoid valve, including shell and disk seat, the shell facial make-up is equipped with double coil assembly and magnetic conduction subassembly, the magnetic conduction subassembly with disk seat fixed connection, double coil assembly parcel the magnetic conduction subassembly, the valve port of disk seat is equipped with oil inlet and oil-out, be equipped with in the disk seat and move the iron core subassembly, it packs into to move the rear portion of iron core subassembly the magnetic conduction subassembly, it is used for controlling to move the front portion of iron core subassembly the oil inlet with the break-make of oil-out. The dual-redundancy electromagnetic valve adopts a dual-redundancy design of the double coils, and compared with a single-coil electromagnetic valve, the dual-redundancy electromagnetic valve has the advantages that the reliability is improved, the weight is light, and the safety and reliability of a system are improved.
Description
Technical Field
The utility model relates to an electricity liquid conversion control technical field, in particular to two redundancy solenoid valves.
Background
Solenoid valves are common elements in hydraulic systems and function to commutate and open and close the oil circuit in the system.
In a high-reliability system, a conventional single-coil solenoid valve cannot meet the reliability requirement of the system. According to the analysis of literature data, the main failure mode of the solenoid valve is failure of the solenoid coil, the solenoid coil belongs to an irreparable element, the service life of the solenoid coil is short, the failure of the solenoid coil can cause failure of the solenoid valve once the solenoid coil fails, and the reliability of the solenoid valve is poor.
Therefore, how to provide a dual-redundancy solenoid valve capable of improving the reliability of the product is a technical problem that needs to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a dual-redundancy solenoid valve adopts the dual-redundancy design of twin coil, obtains improving than the single coil solenoid valve reliability, light in weight, lift system's fail safe nature.
For realizing the above-mentioned purpose, the utility model provides a dual-redundancy solenoid valve, including shell and disk seat, be equipped with double coil subassembly and magnetic conduction subassembly in the shell, the magnetic conduction subassembly with disk seat fixed connection, double coil subassembly parcel the magnetic conduction subassembly, the valve port of disk seat is equipped with oil inlet and oil-out, be equipped with in the disk seat and move the iron core subassembly, it packs into to move the rear portion of iron core subassembly the magnetic conduction subassembly, it is used for control to move the front portion of iron core subassembly the oil inlet with the break-make of oil-out.
Preferably, the double-coil component comprises a framework arranged on the shell, and a first coil and a second coil arranged on the framework, wherein the first coil and the second coil sequentially surround the magnetic conductive component from back to front.
Preferably, the magnetic conducting component comprises a fixed iron, a magnetism isolating ring and a magnetic conducting head, and the fixed iron, the magnetism isolating ring and the magnetic conducting head are fixedly connected from back to front in sequence.
Preferably, the fixed iron, the magnetism isolating ring and the magnetic conduction head are fixedly connected through laser welding.
Preferably, the outer part of the magnetic head is fixedly connected with the valve seat through threads.
Preferably, the magnetic isolating ring and the magnetic conduction head are internally provided with a movable iron core hole for the movable iron core assembly to be installed and contacted with the fixed iron.
Preferably, move the iron core subassembly and include and move iron core, clamping ring and ejector pin, the iron core the clamping ring with the ejector pin is by preceding fixed connection setting in proper order backward.
Preferably, the magnetic head is provided with a cavity communicated with the moving iron core hole, the moving iron core, the pressing ring and the ejector rod are located in the cavity, the rear part of the moving iron core is installed in the moving iron core hole, the moving iron core is sleeved with a spring, and the spring is located between the pressing ring and the magnetic head.
Preferably, the front part of the ejector rod is a ball head, the roughness is < Ra0.2, HRC >50, and the ball head is used for forming a sealing pair with the valve port.
Preferably, a sealing ring is arranged at the joint of the magnetic conduction assembly and the valve seat.
Compared with the prior art, the utility model provides a dual-redundancy solenoid valve includes shell and disk seat, is equipped with double coil subassembly and magnetic conduction subassembly in the shell, and the magnetic conduction subassembly is packed into the double coil subassembly, and double coil subassembly wraps up the magnetic conduction subassembly, and the magnetic conduction subassembly is fixed connection with the disk seat, and the valve port of disk seat is equipped with oil inlet and oil-out, is equipped with movable iron core subassembly in the disk seat, and the magnetic conduction subassembly is packed into to the rear portion of movable iron core subassembly, and the anterior part of movable iron core subassembly controls the break-make of oil inlet and; when the double-coil component is used, under the action of external excitation voltage, a magnetic field is generated through the double-coil component, a magnetic circuit is formed by magnetizing the magnetic conduction component under the action of the magnetic field, electromagnetic force is generated through the movable iron core component, the movable iron core component moves under the control of the electromagnetic force, and then the on-off of the oil inlet and the oil outlet is controlled, namely the on-off state of the external excitation voltage is switched to control the on-off of the oil inlet and the oil outlet to complete the electro-hydraulic conversion of a system, when one coil of the double-coil component fails, the external excitation voltage is increased to complete the required electromagnetic force; the dual-redundancy electromagnetic valve adopts a dual-redundancy design of the double coils, and compared with a single-coil electromagnetic valve, the dual-redundancy electromagnetic valve has the advantages that the reliability is improved, the weight is light, and the safety and reliability of a system are improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be 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 embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a dual-redundancy electromagnetic valve provided in an embodiment of the present invention;
FIG. 2 is a schematic structural view of the magnetic conductive assembly shown in FIG. 1;
FIG. 3 is a schematic structural view of the movable core assembly of FIG. 1;
fig. 4 is a schematic structural view of the dual coil assembly of fig. 1.
Wherein:
1-screw, 2-magnetic conductive sheet, 3-shell, 4-framework, 5-first coil, 6-second coil, 7-fixed iron, 8-magnetism isolating ring, 9-magnetic conductive head, 10-movable iron core, 11-spring, 12-press ring, 13-ejector rod, 14-valve seat, 15-positioning pin, 16-leather tube, 17-sealing ring, 18-oil inlet, 19-oil outlet and 20-cavity.
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 creative work belong to the protection scope of the present invention.
In order to make the technical field of the present invention better understand, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.
Referring to fig. 1 to 4, wherein fig. 1 is a schematic structural diagram of a dual-redundancy electromagnetic valve according to an embodiment of the present invention, fig. 2 is a schematic structural diagram of a magnetic conducting assembly in fig. 1, fig. 3 is a schematic structural diagram of a movable iron core assembly in fig. 1, and fig. 4 is a schematic structural diagram of a dual-coil assembly in fig. 1.
In a specific implementation mode, the utility model provides a dual-redundancy solenoid valve includes shell 3 and disk seat 14, the dress is equipped with double coil subassembly and magnetic conduction subassembly in the shell 3, it is fixed with shell 3 after double coil subassembly and magnetic conduction subassembly all pack into, magnetic conduction subassembly and disk seat 14 fixed connection, the double coil subassembly of packing into is led to the magnetic conduction subassembly, double coil subassembly parcel magnetic conduction subassembly, be equipped with in the disk seat 14 and move the iron core subassembly, the magnetic conduction subassembly is packed into at the rear portion of moving the iron core subassembly, the anterior valve port that stretches into disk seat 14 of moving the iron core subassembly, the valve port of disk seat 14 is equipped with oil inlet 18 and oil-out 19, the anterior break-make that is used for controlling oil inlet 18 and oil-out 19 of.
It should be noted that the movable iron core assembly is arranged in the magnetic conducting assembly, and the distance between the magnetic conducting assembly and the two end faces of the movable iron core assembly is 0.25mm as the movement stroke of the movable iron core assembly.
When using, under the effect of external excitation voltage, produce magnetic field through the twin coil subassembly, magnetize under the magnetic field effect through the magnetic conduction subassembly and form the magnetic circuit, produce the electromagnetic force through moving the iron core subassembly, move the iron core subassembly under the control of electromagnetic force, and then the break-make of control oil inlet 18 and oil-out 19, the break-make completion system electricity liquid conversion of oil inlet 18 and oil-out 19 is controlled through the break-make state of switching external excitation voltage promptly, when certain coil of twin coil subassembly became invalid, improve external excitation voltage and accomplish required electromagnetic force, thereby the motion of guarantee moving the iron core subassembly.
The dual-redundancy electromagnetic valve has the advantages of reasonable overall structure design, improved reliability compared with a single-coil electromagnetic valve, light weight and improved safety and reliability of a system.
In a specific embodiment, the dual-coil assembly comprises a framework 4 installed on the housing 3 and a first coil 5 and a second coil 6 installed on the framework 4, the first coil 5 and the second coil 6 are sequentially arranged around the magnetic conduction assembly from back to front, that is, two coils are installed on the framework 4, the first coil 5 and the second coil 6 are consistent in parameter design and can be interchanged, and the two groups of coils are respectively led out of the external signal controller.
It should be noted that, besides dual redundancy, the dual-redundancy electromagnetic valve also has the characteristics of novelty and light weight, the weight is less than 70g, the product weight is small, and the total weight requirement of the system can be conveniently met.
In this embodiment, this dual-redundancy solenoid valve is whole to be formed cylindrical structure, and this solenoid valve designs into integrative cartridge formula overall structure, and inside double coil design that adopts improves the stability of performance of electro-magnet.
Besides, a magnetic conductive sheet 2 made of magnetic materials is arranged between the shell 3 and the framework 4; in the use process, under the effect of external excitation voltage, the double-coil component generates a magnetic field, and the magnetic conductive sheet 2, the shell 3, the magnetic conductive component and the movable iron core component are magnetized under the effect of the magnetic field to form a magnetic circuit.
In a specific embodiment, the magnetic conducting assembly comprises a fixed iron 7, a magnetism isolating ring 8 and a magnetic conducting head 9, wherein the fixed iron 7, the magnetism isolating ring 8 and the magnetic conducting head 9 are fixedly connected in sequence from back to front.
For example, the fixed iron 7, the magnetism isolating ring 8 and the magnetism conducting head 9 are fixedly connected by laser welding, and besides, they may also be fixedly connected by other manners, which also belongs to the description scope of the present embodiment.
Specifically, the rear part of the fixed iron 7 is provided with a hole, and the fixed iron 7 is fixedly connected with the shell 3 through a screw 1.
Illustratively, the magnetic conducting assembly is connected to the valve seat 14 through a screw thread, so that the outer portion of the magnetic conducting head 9 is fixedly connected to the valve seat 14 through a screw thread.
In this embodiment, the magnetic isolation ring 8 and the magnetic head 9 are provided with a moving iron core hole for the moving iron core assembly to be inserted into and contact with the fixed iron 7.
In a specific embodiment, the movable iron core assembly comprises a movable iron core 10, a pressure ring 12 and a push rod 13, wherein the iron core 10, the pressure ring 12 and the push rod 13 are fixedly connected in sequence from back to front.
Specifically, the pressing ring 12 presses the ejector rod 13 through interference fit with the movable iron core 10, and the movable iron core assembly is formed through spot welding on the periphery; it should be noted that the air gap between the magnetic conducting component and the moving iron core component is 0.25 mm.
In this embodiment, the magnetic head 9 is provided with a cavity 20 communicated with the movable iron core hole, the movable iron core 10, the pressing ring 12 and the ejector rod 13 are located in the cavity 20, the movable iron core hole is installed at the rear part of the movable iron core 10, the movable iron core 10 is sleeved with the spring 11, and the spring 11 is located between the pressing ring 12 and the magnetic head 9.
In this embodiment, the front part of the top rod 13 is a ball head with roughness < ra0.2, HRC >50, and the ball head is used to form a sealing pair in cooperation with the valve port.
It should be noted that, the movable iron core assembly carries the push rod 13 of the ball head to seal with the valve port of the valve seat 14 under the force of the spring 11, that is, the valve seat 14 adopts ball head sealing, and the structure is simple and reliable.
Illustratively, a sealing ring 17 is arranged at the joint of the magnetic conduction assembly and the valve seat 14, the valve seat 14 is end-sealed by the sealing ring 17, so that the sealing ring 17 is assembled at the threaded joint of the magnetic conduction head 9 and the valve seat 14, the valve seat 14 is installed in the leather tube 16 for sealing, and the valve body is prevented from leaking by the sealed leather tube 16 and the sealing ring 17. The dual-redundancy electromagnetic valve has reliable sealing performance, the electromagnetic valve is integrally inserted into the shell 3, and the leather sleeve 16 keeps sealing and does not leak.
This dual-redundancy solenoid valve adopts metal and metal sealing mode, through rational design, combines roughness and hardness strict control to ejector pin 13 and valve port, guarantees the leakproofness, improves simultaneously sealed position and resists fluid impurity ability, improves the product leakproofness.
In this embodiment, when a certain electrical signal is input to the dual coil assembly, an electromagnetic force is generated, which overcomes the elastic force of the spring 11, other frictional forces and hydrodynamic force, and the movable iron core assembly moves towards the magnetic guide assembly to open the valve port, thereby realizing the on-off of oil; when the double-coil component is de-energized, the movable iron core component moves towards the valve seat 14 under the action of the elastic force of the spring 11, and the valve port is closed.
In addition, the positioning pin 15 forms an interference fit with the valve seat 14, and the positioning pin 15 controls the circumferential displacement of the solenoid valve.
In a specific use process, under the action of external excitation voltage, the double-coil component generates a magnetic field, and the magnetic conductive sheet 2, the shell 3, the magnetic conductive component and the movable iron core component are magnetized under the action of the magnetic field to form a magnetic circuit. Electromagnetic force is generated between the magnetic conduction assembly and the movable iron core assembly, the movable iron core assembly overcomes the elastic force and the hydraulic force of the spring 11 and moves leftwards until the movable iron core assembly is attached to the end face of the fixed iron 7, a valve port of the valve seat 14 is opened, hydraulic oil flows from the oil inlet 18 to the oil outlet 19, the designed technical requirement index is completed, meanwhile, part of hydraulic oil enters the cavity 20 from a gap between the ejector rod 13 and the valve seat 14 to play a role in lubrication and heat dissipation, and the sealing ring 17 plays a role in preventing leakage at the threaded connection position of the magnetic conduction.
When the external excitation voltage disappears, the movable iron core component moves rightwards under the elastic force of the spring 11 until contacting the valve port of the valve seat 14, and the valve port is closed. Namely, the on-off state of external excitation voltage is switched to control the on-off of the oil inlet 18 and the oil outlet 19 to complete the system electro-hydraulic conversion. When one coil of the double-coil component fails, the control signal of the double-coil component can improve the external excitation voltage to complete the required electromagnetic force, so that the movement of the movable iron core component is ensured.
It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
It is right above that the utility model provides a two redundancy solenoid valves have carried out detailed introduction. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (10)
1. The dual-redundancy electromagnetic valve is characterized by comprising a shell (3) and a valve seat (14), wherein a double-coil component and a magnetic conduction component are installed in the shell (3), the magnetic conduction component is fixedly connected with the valve seat (14), the double-coil component wraps the magnetic conduction component, an oil inlet (18) and an oil outlet (19) are formed in a valve port of the valve seat (14), a movable iron core component is arranged in the valve seat (14), the magnetic conduction component is installed at the rear part of the movable iron core component, and the front part of the movable iron core component is used for controlling the on-off of the oil inlet (18) and the oil outlet (19).
2. The dual-redundancy electromagnetic valve according to claim 1, wherein the dual-coil assembly comprises a frame (4) mounted on the housing (3) and a first coil (5) and a second coil (6) mounted on the frame (4), and the first coil (5) and the second coil (6) are sequentially arranged around the magnetic conductive assembly from back to front.
3. The dual-redundancy electromagnetic valve according to claim 1, wherein the magnetic conducting component comprises a fixed iron (7), a magnetism isolating ring (8) and a magnetic conducting head (9), and the fixed iron (7), the magnetism isolating ring (8) and the magnetic conducting head (9) are fixedly connected in sequence from back to front.
4. The dual-redundancy electromagnetic valve according to claim 3, wherein the fixed iron (7), the magnetism isolating ring (8) and the magnetism conducting head (9) are fixedly connected by laser welding.
5. A dual-redundancy electromagnetic valve according to claim 3, characterized in that the outside of the magnetic head (9) is fixedly connected with the valve seat (14) by a thread.
6. A dual-redundancy electromagnetic valve according to claim 3, characterized in that the magnetic isolating ring (8) and the magnetic head (9) are internally provided with a moving iron core hole for the moving iron core assembly to be installed and contacted with the fixed iron (7).
7. The dual-redundancy electromagnetic valve according to claim 6, wherein the movable iron core assembly comprises a movable iron core (10), a pressing ring (12) and an ejector rod (13), and the iron core (10), the pressing ring (12) and the ejector rod (13) are sequentially and fixedly connected from back to front.
8. The dual-redundancy electromagnetic valve according to claim 7, characterized in that the magnetic head (9) is provided with a cavity (20) communicating with the moving core hole, the moving core (10), the press ring (12) and the ejector rod (13) are located in the cavity (20) and the rear portion of the moving core (10) is installed in the moving core hole, the moving core (10) is sleeved with a spring (11), and the spring (11) is located between the press ring (12) and the magnetic head (9).
9. A dual redundancy solenoid valve according to claim 7 wherein the front of the carrier rod (13) is a ball head with a roughness < Ra0.2, HRC >50, the ball head being adapted to cooperate with the valve port to form a sealing pair.
10. A dual redundancy solenoid valve according to any of claims 1 to 9 wherein a sealing ring (17) is provided at the junction of the magnetically conductive assembly and the valve seat (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022084644.7U CN213018005U (en) | 2020-09-21 | 2020-09-21 | Dual-redundancy electromagnetic valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022084644.7U CN213018005U (en) | 2020-09-21 | 2020-09-21 | Dual-redundancy electromagnetic valve |
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| CN213018005U true CN213018005U (en) | 2021-04-20 |
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| CN202022084644.7U Active CN213018005U (en) | 2020-09-21 | 2020-09-21 | Dual-redundancy electromagnetic valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114321393A (en) * | 2021-12-22 | 2022-04-12 | 新乡市振航机电有限公司 | Miniature cartridge formula double coil solenoid valve |
-
2020
- 2020-09-21 CN CN202022084644.7U patent/CN213018005U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114321393A (en) * | 2021-12-22 | 2022-04-12 | 新乡市振航机电有限公司 | Miniature cartridge formula double coil solenoid valve |
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