CN110778294A - Electromagnetic valve device for oil extraction in oil field - Google Patents
Electromagnetic valve device for oil extraction in oil field Download PDFInfo
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- CN110778294A CN110778294A CN201911087512.5A CN201911087512A CN110778294A CN 110778294 A CN110778294 A CN 110778294A CN 201911087512 A CN201911087512 A CN 201911087512A CN 110778294 A CN110778294 A CN 110778294A
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- electromagnetic
- valve
- pressure relief
- fixed mounting
- oil
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- 238000000605 extraction Methods 0.000 title claims abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 20
- 230000006978 adaptation Effects 0.000 claims description 4
- 238000011084 recovery Methods 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 230000008859 change Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000013459 approach Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/066—Valve arrangements for boreholes or wells in wells electrically actuated
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses an electromagnetic valve device for oil extraction in an oil field, and particularly relates to the field of electromagnetic valves. According to the invention, after the air pressure in the inner box is stable, the air pressure disappears, at the moment, the sealing assembly generates magnetic force due to conduction, the electromagnetic sheet is close to the side face of the pressure relief pipe, the pressure relief pipe is finally sealed, then the sealing in the inner box is completed, the influence of the external environment on the electromagnetic core is greatly reduced, and the protection of the electromagnetic core is finally completed.
Description
Technical Field
The invention relates to the technical field of electromagnetic valves, in particular to an electromagnetic valve device for oil extraction in an oil field.
Background
Oil is an irreplaceable important substance at the present stage, and therefore oil exploitation techniques and management techniques have been the focus of research. The domestic oil field production generally has the characteristics of dispersed regions, severe environment and long equipment operation time, so that regular inspection is required to report and feed back problems, and equipment maintenance is carried out according to a preset management flow.
Wherein the most important subassembly is control valve in the oil recovery in-process in the oil field, and current equipment adopts the solenoid valve as control valve more to guarantee the accuracy nature of recovering oil, nevertheless the solenoid valve that the environment current still has many defects in the face of diversified oil recovery: at first because the atmospheric pressure in the oil production pipe is far above the atmospheric pressure in the normal environment, utilize the control of electromagnetic component, the inside atmospheric pressure difference change will very big damage to the inside subassembly of solenoid valve, reduced the life of solenoid valve, the removal of magnetic core also can be influenced to the atmospheric pressure difference simultaneously, causes the deviation of solenoid valve magnetic core, then causes the measurement inaccurate, the uneven problem of accuse volume.
Therefore, it is desirable to provide a solenoid valve assembly that ensures stable air pressure inside the solenoid valve and stable magnetic core.
Disclosure of Invention
In order to overcome the above-mentioned defects in the prior art, embodiments of the present invention provide an electromagnetic valve device for oil extraction in an oil field, wherein due to the mutual approach of a magnetic sheet and an electromagnetic core, a space between the magnetic sheet and the electromagnetic core is compressed, air pressure is increased, at this time, air pressure between the magnetic sheet and the electromagnetic core is discharged from one pressure relief pipe, and due to a change of air pressure difference, an air flow gradually enters the top of the electromagnetic core through another pressure relief pipe until the air pressures of upper and lower spaces of the electromagnetic core are the same, so that the air pressure inside an inner box is finally constant, thereby ensuring that the electromagnetic core is not damaged by the air pressure difference, and greatly increasing the service life of the electromagnetic valve device, so as to.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an electromagnetic valve device for oil field recovery, includes the valve body, there is the valve gap at the top of valve body through fastening bolt fixed mounting, the inside cover of valve gap is equipped with tensile pole, the inside fixed mounting that the bottom of tensile pole extends to the valve body has the piston, the outside movable sleeve of piston is equipped with the solid fixed ring that is located the valve body inside, the fixed cover in top of valve gap is equipped with the valve pipe, the fixed suit in top of valve gap is located the inside seal block of valve pipe, the top fixed mounting of valve pipe has the control box, the fixed cover in inside of control box is equipped with the inner box, the fixed cover in inside of inner box is equipped with and is located and unloads the power case, the top of tensile pole extends to the inside and the fixedly connected with rubber block of unloading the power case, the fixed cover in top of rubber block is equipped with the ejector pin, the utility model discloses a pressure relief pipe, including inner box, electromagnetic control assembly, ejector pin, pressure relief pipe, pressure relief groove, inner wall fixed mounting, pressure relief pipe, pressure relief groove, the inner wall fixed mounting of control box has the pressure relief pipe that is located between electromagnetic core and the magnetic sheet, electromagnetic control assembly extends to the outside of control box, the top fixedly connected with magnetic sheet of unloading the power case, fixed mounting has the electromagnetic core between electromagnetic control assembly and the ejector pin, the inner wall fixed mounting of inner box has the guide rail with magnetic sheet looks adaptation, the inner wall fixed connection of electromagnetic core and inner box, the right flank fixed mounting of inner box has a pressure relief pipe that is located between electromagnetic core and the magnetic sheet, the opposite side fixed mounting of inner box has another pressure relief pipe that is located the electromagnetic core top, the pressure relief groove has been seted up to the inside of pressure relief pipe.
In a preferred embodiment, the stretching rod is movably sleeved with a buffer spring, and the upper end and the lower end of the buffer spring are fixedly connected with the top surface of the fixing ring and the bottom surface of the valve cover respectively.
In a preferred embodiment, the outer part of the stretching rod is movably sleeved with a limiting block, and the top surface of the limiting block is in friction connection with the top surface of the inner cavity of the valve tube.
In a preferred embodiment, a return spring is movably sleeved outside the ejector rod, and the upper end and the lower end of the return spring are respectively and fixedly connected with the side surface between the electromagnetic core and the magnetic sheet.
In a preferred embodiment, the sealing assembly comprises a connecting plate, a limiting slide rail is fixedly mounted on the bottom surface of the connecting plate, a connecting rod matched with the limiting slide rail is movably clamped in the limiting slide rail, a loop bar is fixedly mounted at the bottom of the connecting rod, an electromagnetic sheet is fixedly mounted on the side surface of the loop bar, and a thin rod is movably sleeved on the other side of the connecting rod.
In a preferred embodiment, the thin rod is movably sleeved with an extension spring, and two ends of the extension spring are respectively fixedly connected with the side surface of the connecting rod and the inner wall of the control box.
In a preferred embodiment, the input end of the electromagnetic sheet is electrically connected with the output end of the electromagnetic control assembly, and a magnetic metal block matched with the electromagnetic sheet is fixedly installed on the side surface of the pressure relief pipe.
In a preferred embodiment, the pressure relief groove is in the shape of a channel which is wide at two ends and narrow in the middle.
In a preferred embodiment, the pressure relief assembly comprises a conduit, an adjusting handle is fixedly mounted on the other side of the conduit, and a swivel is movably sleeved outside the conduit.
The invention has the technical effects and advantages that:
1. in the actual operation process, the magnetic sheet and the electromagnetic core are close to each other, the space between the magnetic sheet and the electromagnetic core is compressed at the moment, the air pressure is increased, the air pressure between the magnetic sheet and the electromagnetic core is discharged from one pressure relief pipe at the moment, and the air flow gradually enters the top of the electromagnetic core through the other pressure relief pipe due to the change of the air pressure difference until the air pressures of the upper space and the lower space of the electromagnetic core are the same, so that the air pressure inside the inner box is finally constant, the electromagnetic core is further ensured not to be damaged by the air pressure difference, and the service life of the device is;
2. after the air pressure in the inner box is stable, the air pressure disappears, at the moment, the sealing assembly generates magnetic force due to conduction, the electromagnetic sheet is close to the side face of the pressure relief pipe, the pressure relief pipe is finally sealed, then the sealing in the inner box is completed, the influence of the external environment on the electromagnetic core is greatly reduced, and the protection of the electromagnetic core is finally completed;
3. according to the invention, the pressure relief groove is arranged in a channel shape with a narrow middle part, so that the influence of the air pressure difference change on the impact of the sealing assembly is greatly limited, the impact force on the whole sealing assembly is ensured not to exceed an extreme value, and the service life of the sealing assembly is greatly prolonged.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is an external structural view of fig. 1 according to the present invention.
Fig. 3 is a schematic structural diagram of fig. 1 at a according to the present invention.
Fig. 4 is a schematic structural view of the sealing assembly of the present invention.
FIG. 5 is a schematic view of the internal structure of the unloading box of the present invention.
Fig. 6 is a schematic structural view of a pressure relief assembly according to the present invention.
The reference signs are: 1. a valve body; 2. a valve cover; 3. a stretch rod; 4. a sealing block; 5. a fixing ring; 6. a buffer spring; 7. a piston; 8. a valve tube; 9. a limiting block; 10. a control box; 11. an inner box; 12. a force unloading box; 13. a magnetic sheet; 14. a guide rail; 15. a return spring; 16. an electromagnetic core; 17. a pressure relief assembly; 171. a conduit; 172. rotating the ring; 173. adjusting the handle; 18. an electromagnetic control assembly; 19. a rubber block; 20. a top rod; 21. a positioning ring; 22. a pressure relief pipe; 23. a pressure relief groove; 24. a seal assembly; 241. a connecting plate; 242. a limiting slide rail; 243. a connecting rod; 244. a loop bar; 245. an electromagnetic sheet; 246. a thin rod; 247. a tension spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
The electromagnetic valve device for oil extraction in oil field as shown in the attached figures 1-6 comprises a valve body 1, a valve cover 2 is fixedly installed at the top of the valve body 1 through a fastening bolt, a stretching rod 3 is sleeved inside the valve cover 2, a piston 7 is fixedly installed inside the stretching rod 3 and extends to the valve body 1 from the bottom, a fixing ring 5 inside the valve body 1 is movably sleeved outside the piston 7, a valve pipe 8 is fixedly sleeved at the top of the valve cover 2, a sealing block 4 inside the valve pipe 8 is fixedly sleeved at the top of the valve cover 2, a control box 10 is fixedly installed at the top of the valve pipe 8, an inner box 11 is fixedly sleeved inside the control box 10, a force unloading box 12 is fixedly sleeved inside the inner box 11, the top of the stretching rod 3 extends to the inside of the force unloading box 12 and is fixedly connected with a rubber block 19, a top fixing sleeve of the rubber block 19 is provided with an ejector rod 20, the top of the ejector rod 20 extends to the top of the inner box 11 and is fixedly connected with an electromagnetic control assembly 18, the electromagnetic control assembly 18 extends to the outside of the control box 10, the top of the stress relief box 12 is fixedly connected with a magnetic sheet 13, an electromagnetic core 16 is fixedly installed between the electromagnetic control assembly 18 and the ejector rod 20, a guide rail 14 matched with the magnetic sheet 13 is fixedly installed on the inner wall of the inner box 11, the electromagnetic core 16 is fixedly connected with the inner wall of the inner box 11, a pressure relief pipe 22 positioned between the electromagnetic core 16 and the magnetic sheet 13 is fixedly installed on the right side surface of the inner box 11, another pressure relief pipe 22 positioned above the electromagnetic core 16 is fixedly installed on the other side of the inner box 11, a pressure relief groove 23 is formed in the pressure relief pipe 22, a sealing assembly 24 with the same horizontal height as the pressure relief pipe 22 is fixedly installed on the inner wall of the control box 10, and a pressure relief assembly 17 is fixedly installed on, the outer part of the mandril 20 is movably sleeved with a positioning ring 21 positioned in the force unloading box 12.
The outer part of the stretching rod 3 is movably sleeved with a buffer spring 6, the upper end and the lower end of the buffer spring 6 are respectively fixedly connected with the top surface of the fixing ring 5 and the bottom surface of the valve cover 2, the outer part of the stretching rod 3 is movably sleeved with a limiting block 9, the top surface of the limiting block 9 is in friction connection with the top surface of the inner cavity of the valve tube 8, the outer part of the ejector rod 20 is movably sleeved with a return spring 15, the upper end and the lower end of the return spring 15 are respectively fixedly connected with the side surface between the electromagnetic core 16 and the magnetic sheet 13, the sealing component 24 comprises a connecting plate 241, the bottom surface of the connecting plate 241 is fixedly provided with a limiting slide rail 242, the inner part of the limiting slide rail 242 is movably clamped with a connecting rod 243 which is matched with the inner part, the bottom of the connecting rod 243 is fixedly provided with a sleeve rod, the outside movable sleeve of pin 246 is equipped with extension spring 247, extension spring 247's both ends respectively with the side of connecting rod 243 and the inner wall fixed connection of control box 10, the input of electromagnetic piece 245 and solenoid electric control assembly 18's output electric connection, the side fixed mounting of pressure release pipe 22 has the magnetic metal piece with electromagnetic piece 245 looks adaptation, pressure release groove 23 is the channel form that the both ends are wide middle narrow, pressure release assembly 17 includes pipe 171, the opposite side fixed mounting of pipe 171 has adjustment handle 173, the outside movable sleeve of pipe 171 is equipped with swivel 172.
The specific implementation mode is as follows: because the magnetic sheet 13 and the electromagnetic core 16 are close to each other, the space between the magnetic sheet and the electromagnetic core is compressed at the moment, the air pressure is increased, the air pressure between the magnetic sheet and the electromagnetic core is discharged from one pressure relief pipe 22 at the moment, and the air flow gradually enters the top of the electromagnetic core 16 through the other pressure relief pipe 22 due to the change of the air pressure difference until the air pressures of the upper space and the lower space of the electromagnetic core 16 are the same, the constant of the air pressure in the inner box 11 is finally completed, the electromagnetic core 16 is further ensured not to be damaged by the air pressure difference, and the service life of; after the air pressure in the inner box 11 is stable, the air pressure disappears, at this time, the sealing assembly 24 generates magnetic force due to conduction, the electromagnetic sheet 245 approaches the side face of the pressure relief pipe 22, the pressure relief pipe 22 is finally sealed, the sealing in the inner box 11 is further completed, the influence of the external environment on the electromagnetic core 16 is greatly reduced, and the protection of the electromagnetic core 16 is finally completed; through setting the pressure relief groove 23 to the narrow channel shape in the middle, very big restriction the atmospheric pressure difference is in the same direction as the influence of changing to seal assembly 24 impact, has ensured that the impact force that whole seal assembly 24 received can not exceed the extreme value, very big increase seal assembly 24's life.
The working principle of the invention is as follows:
firstly, closing the electromagnetic valve, and when the electromagnetic valve is ready to be opened, firstly, starting the electromagnetic control assembly 18 to conduct electricity, wherein the electromagnetic core 16 is electrified to generate magnetic force so as to generate magnetic force on the magnetic sheet 13, and at the moment, the magnetic sheet 13 moves upwards to drive the stretching rod 3 to move upwards and then drive the piston 7 to move upwards so as to open the valve; in the process, as the magnetic sheet 13 and the electromagnetic core 16 approach each other, the space between the two is compressed at the time, the air pressure is increased, the air pressure between the two is discharged from one pressure relief pipe 22 at the time, and due to the change of the air pressure difference, the air flow gradually enters the top of the electromagnetic core 16 through the other pressure relief pipe 22 until the air pressures of the upper space and the lower space of the electromagnetic core 16 are the same, the air pressure inside the inner box 11 is finally constant, and after the air pressure is stabilized, the air pressure disappears, at the time, the sealing assembly 24 generates magnetic force due to conduction, the electromagnetic sheet 245 approaches the side surface of the pressure relief pipe 22, the pressure relief pipe 22 is finally sealed, the sealing inside the inner box 11 is further completed, and the protection of the electromagnetic core 16.
The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;
secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the invention, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the invention can be combined with each other without conflict;
and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.
Claims (9)
1. The utility model provides an oil field is solenoid valve device for oil recovery, includes valve body (1), its characterized in that: the valve comprises a valve body (1), a valve cover (2) is fixedly mounted at the top of the valve body (1) through a fastening bolt, a stretching rod (3) is sleeved on the valve cover (2), a piston (7) is fixedly mounted on the inner portion of the stretching rod (3) extending to the valve body (1), a fixing ring (5) located inside the valve body (1) is sleeved on the outer portion of the piston (7), a valve pipe (8) is fixedly sleeved on the top of the valve cover (2), a sealing block (4) located inside the valve pipe (8) is fixedly sleeved on the top of the valve cover (2), a control box (10) is fixedly mounted on the top of the valve pipe (8), an inner box (11) is fixedly sleeved on the inner portion of the control box (10), an inner box (12) is fixedly sleeved on the inner portion of the inner box (11), the top of the stretching rod (3) extends to the inner portion of the inner box (12), the top fixed mounting of block rubber (19) is equipped with ejector pin (20), the top of ejector pin (20) extends to the top and the fixedly connected with electromagnetic control assembly (18) of inner box (11), electromagnetic control assembly (18) extend to the outside of control box (10), unload top fixedly connected with magnetic sheet (13) of power case (12), fixed mounting has electromagnetic core (16) between electromagnetic control assembly (18) and ejector pin (20), the inner wall fixed mounting of inner box (11) has guide rail (14) with magnetic sheet (13) looks adaptation, the inner wall fixed connection of electromagnetic core (16) and inner box (11), the right flank fixed mounting of inner box (11) has one to be located the pressure release pipe (22) between electromagnetic core (16) and magnetic sheet (13), the opposite side fixed mounting of inner box (11) has another pressure release pipe (22) that is located electromagnetic core (16) top, the pressure relief groove (23) have been seted up to the inside of pressure relief pipe (22), the inner wall fixed mounting of control box (10) has with the same level's of pressure relief pipe (22) sealing component (24), the top fixed mounting of control box (10) side has pressure relief subassembly (17), the outside movable sleeve of ejector pin (20) is equipped with and is located the holding ring (21) of unloading power case (12) inside.
2. The electromagnetic valve device for oil extraction in the oil field according to claim 1, wherein: the outer part of the stretching rod (3) is movably sleeved with a buffer spring (6), and the upper end and the lower end of the buffer spring (6) are respectively fixedly connected with the top surface of the fixing ring (5) and the bottom surface of the valve cover (2).
3. The electromagnetic valve device for oil extraction in the oil field according to claim 1, wherein: the outer part of the stretching rod (3) is movably sleeved with a limiting block (9), and the top surface of the limiting block (9) is in friction connection with the top surface of the inner cavity of the valve pipe (8).
4. The electromagnetic valve device for oil extraction in the oil field according to claim 1, wherein: the outer part of the ejector rod (20) is movably sleeved with a return spring (15), and the upper end and the lower end of the return spring (15) are fixedly connected with the side face between the electromagnetic core (16) and the magnetic sheet (13) respectively.
5. The electromagnetic valve device for oil extraction in the oil field according to claim 1, wherein: sealing component (24) includes connecting plate (241), the bottom surface fixed mounting of connecting plate (241) has spacing slide rail (242), the inside activity joint of spacing slide rail (242) has connecting rod (243) of looks adaptation, the bottom fixed mounting of connecting rod (243) has loop bar (244), the side fixed mounting of loop bar (244) has electromagnetic sheet (245), the opposite side movable sleeve of connecting rod (243) is equipped with pin rod (246).
6. The electromagnetic valve device for oil extraction in the oil field according to claim 5, wherein: an extension spring (247) is movably sleeved outside the thin rod (246), and two ends of the extension spring (247) are respectively fixedly connected with the side surface of the connecting rod (243) and the inner wall of the control box (10).
7. The electromagnetic valve device for oil extraction in the oil field according to claim 5, wherein: the input end of the electromagnetic sheet (245) is electrically connected with the output end of the electromagnetic control assembly (18), and the side surface of the pressure relief pipe (22) is fixedly provided with a magnetic metal block matched with the electromagnetic sheet (245).
8. The electromagnetic valve device for oil extraction in the oil field according to claim 1, wherein: the pressure relief groove (23) is in a channel shape with two wide ends and a narrow middle.
9. The electromagnetic valve device for oil extraction in the oil field according to claim 1, wherein: the pressure relief assembly (17) comprises a conduit (171), an adjusting handle (173) is fixedly mounted on the other side of the conduit (171), and a rotating ring (172) is movably sleeved outside the conduit (171).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911087512.5A CN110778294B (en) | 2019-11-08 | 2019-11-08 | Electromagnetic valve device for oil extraction in oil field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911087512.5A CN110778294B (en) | 2019-11-08 | 2019-11-08 | Electromagnetic valve device for oil extraction in oil field |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110778294A true CN110778294A (en) | 2020-02-11 |
| CN110778294B CN110778294B (en) | 2021-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911087512.5A Expired - Fee Related CN110778294B (en) | 2019-11-08 | 2019-11-08 | Electromagnetic valve device for oil extraction in oil field |
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| Country | Link |
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| CN (1) | CN110778294B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201866259U (en) * | 2010-11-05 | 2011-06-15 | 郑鉴川 | Self-locking electromagnetic gas valve |
| CN208417696U (en) * | 2018-07-02 | 2019-01-22 | 杭州湘君电子有限公司 | A kind of multifunctional unit solenoid valve |
| CN110056701A (en) * | 2019-03-25 | 2019-07-26 | 王林浩 | A kind of gas transmission control method and gas transmission control solenoid valve |
| CN110107728A (en) * | 2019-05-17 | 2019-08-09 | 浙江固特气动科技股份有限公司 | A kind of charging/discharging valve of sustainable sealing |
-
2019
- 2019-11-08 CN CN201911087512.5A patent/CN110778294B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201866259U (en) * | 2010-11-05 | 2011-06-15 | 郑鉴川 | Self-locking electromagnetic gas valve |
| CN208417696U (en) * | 2018-07-02 | 2019-01-22 | 杭州湘君电子有限公司 | A kind of multifunctional unit solenoid valve |
| CN110056701A (en) * | 2019-03-25 | 2019-07-26 | 王林浩 | A kind of gas transmission control method and gas transmission control solenoid valve |
| CN110107728A (en) * | 2019-05-17 | 2019-08-09 | 浙江固特气动科技股份有限公司 | A kind of charging/discharging valve of sustainable sealing |
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| CN110778294B (en) | 2021-11-09 |
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Granted publication date: 20211109 |