CN204739266U - LNG ( liquefied natural gas ) hangs down resistance automatic control check valve device - Google Patents
LNG ( liquefied natural gas ) hangs down resistance automatic control check valve device Download PDFInfo
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- CN204739266U CN204739266U CN201520356682.XU CN201520356682U CN204739266U CN 204739266 U CN204739266 U CN 204739266U CN 201520356682 U CN201520356682 U CN 201520356682U CN 204739266 U CN204739266 U CN 204739266U
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- safety check
- low temperature
- lng
- natural gas
- valve
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Abstract
The utility model provides a LNG ( liquefied natural gas ) hangs down resistance automatic control check valve device, by low temperature check valve body, low temperature resistant teflon seal pad, the sealed case of low temperature resistant iron -nickel alloy magnetism, the guide pin bushing is gone up to lower sliding sleeve, sealed spring, the valve gap, solenoid, iron core and autonomous system combination form. When needs pass through the check valve liquid feeding, the pressure sensor signal, the power transmission is sent in the automatic control, produces magnetic field to the power transmission of check valve solenoid, iron core, case rebound to the certain aperture of unseating, low temperature LNG ( liquefied natural gas ) fluid passage valve body reduces the flow resistance, improves the flow. Finish when filling the dress, the low pressure signal is detected certainly to the pressure decrease, the outage, and magnetic field disappears, and the disk seat is got back to to compression spring effect case, and the valve is closed. Emergency takes place for the quick action emergency valve effect in addition of this device, and the power -off signal is sent in control, and the valve is closed. Do not have and reveal some safe and reliable. A valve has two valve functions. This device compact structure, it is with low costs, operation, easy maintenance.
Description
Technical field
The utility model relates to a kind of LNG Liquefied natural gas liquid feeding technology, especially a kind of LNG(LNG Liquefied natural gas) lower resistance self-control non-return control valve unit.
Background technique
LNG Liquefied natural gas has been widely used on automobile, heavily card, in liquefied natural gas filling automobile process, need to be filled into liquefied natural gas (LNG) tank from LNG Liquefied natural gas tank car and to store, must install one way stop peturn valve filling on pipeline by specification, common stainless steel low temperature safety check fills pipeline and relies on fluid pressure action in spool, produce power upwards, open spool, cause circulating resistance large, residual liquid is many, fill liquid feeding speed slow, efficiency is low.
Summary of the invention
The purpose of this utility model is to provide a kind of LNG(LNG Liquefied natural gas) lower resistance self-control non-return control valve unit overcomes the above-mentioned defect of existing safety check.
The technological scheme that the utility model technical solution problem adopts is:
Check valve body is identical with existing common stainless steel low temperature safety check; The low temperature resistant iron-nickel alloy magnetic seal spool of spool, all cross sections perpendicular to its axis are circle, and its top is fixed with the low sleeve of the cylinder bodily form, are fixedly connected with low temperature resistant polytetrafluoroethylene sealing gasket below it with clamping bolt nut; Spool is as can be up and down in valve body piston; Safety check door closure, low temperature resistant polytetrafluoroethylene sealing gasket are connected with check valve body upper end by bolt and nut link; The upper guide bush of the cylinder bodily form is welded with below safety check door closure, upper guide bush inserts in low sleeve, can relatively with low sleeve slide up and down, play the guiding role, circular seal spring is installed outside guide pin bushing, Packing spring upper-end surface compresses safety check door closure, and lower end surface compression low sleeve and spool, on sealing surface of seat, play sealing non-return cutting action to valve; Be mounted with safety check electromagnetic coil, safety check iron core above valve gap, external robot control system(RCS) and pressure sensing/transmitter and 220V power supply, pressure sensing/transmitter is arranged on safety check outlet conduit, and testing pipes pressure, pressure signal passes to robot control system(RCS).
Method of work of the present utility model: 1, unload liquid feeding time, LNG(LNG Liquefied natural gas) tank car liquid is by LNG(LNG Liquefied natural gas) lower resistance self-control non-return control valve unit and pipeline, valve flow to LNG(LNG Liquefied natural gas) horizontal tank.Liquid flows to LNG(LNG Liquefied natural gas) lower resistance self-control non-return control valve unit time, pressure transducer detects pressure signal (can set H high pressure values), robot control system(RCS) is sent to by pressure transmitter, robot control system(RCS) sends electric signals, to safety check electromagnetic coil power transmission, iron core produces magnetic field, magnetic force low temperature resistant iron-nickel alloy magnetic seal spool, produce suction upwards, spool passes through low sleeve, upper guide bush, compression seal spring, spool leaves valve body and valve seat, rise certain aperture, low temperature LNG(LNG Liquefied natural gas) liquid is by valve body left end, valve seat, to valve body right-hand member, because spool utilizes electromagnetic force to rise and opens, dependence fluid pressure action conventional before avoiding is in spool, produce power upwards, open the situation of spool, greatly reduce fluid resistance.
2, at the end of unloading, when LNG(LNG Liquefied natural gas) fill close to complete, hydrodynamic pressure reduces, when pressure is reduced to certain numerical value (can set L low pressure values), pressure transducer detects low pressure signal, robot control system(RCS) is sent to by pressure transmitter, robot control system(RCS) sends power-off signal, to the power-off of safety check electromagnetic coil, core field disappears, Packing spring spring-force driven dual low temperature resistant iron-nickel alloy magnetic seal spool, produce downward power, spool passes through low sleeve, upper guide bush, get back to valve body and valve seat, valve closes, low temperature LNG(LNG Liquefied natural gas) liquid choking, safety check reliable sealing, complete the function of low temperature safety check.
3, by setting certain pressure parameter, LNG(LNG Liquefied natural gas) lower resistance self-control non-return control valve unit can also play the effect of Emergeny Cutoff Valves, LNG(LNG Liquefied natural gas) testing signal of lower resistance self-control non-return control valve unit solenoid controlled signal and certain value is chain, when an emergency happens, as detected, the signal of certain value occurs, control system differentiates that the confirmation state of emergency occurs, and sends power-off signal, cut off safety check at once, play Shuttoff Valve effect.
4, LNG(LNG Liquefied natural gas) lower resistance self-control non-return control valve unit, the low temperature resistant iron-nickel alloy magnetic seal spool of low temperature resistant-196 ° of C, uses common ferromagnetic substance instead, for normal temperature safety check pipe-line system.
5, LNG(LNG Liquefied natural gas) lower resistance self-control non-return control valve unit, safety check electromagnetic coil, iron core and robot control system(RCS) use ferromagnetic substance block instead, control magnetic force low temperature resistant iron-nickel alloy magnetic seal spool manually to rise or landing, open or close safety check.
the effect that the utility model is useful
The technology of the present invention route is short, and cost is low, overcomes the shortcoming that conventional safety check fluid passage resistance is large, and dependence fluid pressure action conventional before avoiding, in spool, produces power upwards, opens the situation of spool, greatly reduce fluid resistance.Improve the flow that the fluid units time passes through, improve LNG(LNG Liquefied natural gas) speed that fills and efficiency.Compare with conventional safety check, use this device, low-temperature tanker LNG(LNG Liquefied natural gas) fill time shorten one times.This device can also play the effect of Emergeny Cutoff Valves, compares Emergeny Cutoff Valves, and the advantage of this device is without any leak point, safe and reliable.A safety check, completes and needs two pieces valve (one-way valve, Emergeny Cutoff Valves) function.The low temperature resistant iron-nickel alloy magnetic seal spool of low temperature resistant-196 ° of C, uses common ferromagnetic substance instead, can be used for normal temperature safety check pipe-line system.Use ferromagnetic substance block, control magnetic force low temperature resistant iron-nickel alloy magnetic seal spool rises or landing manually, opens or closes safety check, and application more flexibly, conveniently.This apparatus structure is compact, and take up room little, cost is low, operation, easy to maintenance.
Accompanying drawing explanation
Fig. 1 is a kind of LNG(LNG Liquefied natural gas of the utility model) structural representation of lower resistance self-control non-return control valve unit;
Fig. 2 is the A-A sectional drawing of Fig. 1;
Fig. 3 is the part mark figure of reference character 1 and mark 10;
Fig. 4 is the structural representation of embodiment four;
In figure, 1-check valve body, the low temperature resistant polytetrafluoroethylene sealing gasket of 2-, 3-low temperature resistant iron-nickel alloy magnetic material sealed valve core, 4-low sleeve, 5-upper guide bush, 6-Packing spring, the low temperature resistant polytetrafluoroethylene sealing gasket of 7-, 8-safety check door closure, 9-bolt and nut link, 10-safety check electromagnetic coil, iron core and robot control system(RCS), 11-clamping bolt, 12-nut, 13-safety check outlet conduit, 14-ferromagnetic substance block, the left cavity of 1-1-check valve body, 1-2-check valve receptacle, the right cavity of 1-3-check valve body, 10-1-safety check is unshakable in one's determination, 10-2-safety check electromagnetic coil, 10-3-safety check robot control system(RCS), 10-4-safety check 220V power supply, 10-5-safety check outlet conduit pressure sensing/transmitter.
Embodiment
Further the utility model is described in detail below in conjunction with embodiment.
Embodiment one: as shown in Fig. 1 Fig. 2 Fig. 3.Described a kind of LNG(LNG Liquefied natural gas) lower resistance self-control non-return control valve unit forms like this: check valve body 1 is identical with existing common stainless steel low temperature safety check; The low temperature resistant iron-nickel alloy magnetic seal spool 3 of spool 3 is made, all cross sections perpendicular to its axis are circle, its upper weld has the low sleeve 4 of the cylinder bodily form, is fixedly connected with low temperature resistant polytetrafluoroethylene sealing gasket 2 below it with clamping bolt 11, nut 12; Spool 3 is as can be up and down in valve body 1 piston; Safety check door closure 8, low temperature resistant polytetrafluoroethylene sealing gasket 7 are connected with check valve body 1 upper end by bolt and nut link 9; Safety check door closure 8 is welded with the upper guide bush 5 of the cylinder bodily form below, upper guide bush 5 inserts in low sleeve 4, can relatively with low sleeve 4 slide up and down, play the guiding role, cylindrical seal spring 6 is installed outside upper guide bush 5, Packing spring 6 upper-end surface compresses safety check door closure 8, and lower end surface compression low sleeve 4 and spool 3, on valve seat 1-2 sealing surface, play sealing non-return cutting action to valve; Safety check door closure 8 is mounted with safety check electromagnetic coil 10-2, safety check iron core 10-1 above, external robot control system(RCS) 10-3 and pressure sensing/transmitter 10-5 and 220V power supply 10-4, pressure biography/transmitter 10-5 is arranged on safety check outlet conduit 13, testing pipes pressure, pressure signal passes to robot control system(RCS) 10-3.Its course of action is LNG(LNG Liquefied natural gas) tank car when needs by safety check circulation liquid feeding time, pressure sensing/transmitter 10-5 detects pressure signal (can set H high-voltage value), robot control system(RCS) 10-3 is sent to by pressure sensing/transmitter 10-5, robot control system(RCS) 10-3 sends electric signals, to safety check electromagnetic coil 10-2 power transmission, safety check iron core 10-1 produces magnetic field, magnetic force low temperature resistant iron-nickel alloy sealing magnetic spool 3, produce suction upwards, spool 3 is by low sleeve 4, upper guide bush 5, compression seal spring 6, spool 3 leaves valve body and valve seat 1-2, rise to certain aperture, low temperature LNG(LNG Liquefied natural gas) liquid is by the left cavity 1-1 of valve body, check valve receptacle 1-2, to the right cavity 1-3 of valve body.When LNG(LNG Liquefied natural gas) fill close to complete, hydrodynamic pressure reduces, when pressure is reduced to certain numerical value (can set L low voltage value), pressure sensing/transmitter 10-5 detects low pressure signal, robot control system(RCS) 10-3 is sent to by pressure sensing/transmitter 10-5, robot control system(RCS) 10-3 sends power-off signal, to safety check electromagnetic coil 10-2 power-off, safety check iron core 10-1 magnetic field dissipate, compression seal spring 6 spring-force driven dual low temperature resistant iron-nickel alloy magnetic seal spool 3, produce downward power, spool 3 is by low sleeve 4, upper guide bush 5, spool 3 gets back to valve body and valve seat 1-2, valve closes, low temperature LNG(LNG Liquefied natural gas) liquid choking, safety check reliable sealing, complete the function of low temperature safety check.
Embodiment two: this device can also play the effect of Emergeny Cutoff Valves, the testing signal of this device solenoid controlled signal and certain value pressure is chain, when an emergency happens, as detected, the signal of certain value pressure occurs, robot control system(RCS) 10-3 differentiates that the confirmation state of emergency occurs, send power-off signal, cut off safety check at once, play Shuttoff Valve effect.
Embodiment three: the low temperature resistant iron-nickel alloy magnetic seal spool 3 of low temperature resistant-196 ° of C, uses common ferromagnetic substance instead, for normal temperature safety check pipe-line system safety check.
Embodiment four: as shown in Figure 4.Safety check iron core 10-1, safety check electromagnetic coil 10-2, robot control system(RCS) 10-3, pressure sensing/transmitter 10-5 and 220V power supply 10-4 is substituted with ferromagnetic substance block 14, utilize and control ferromagnetic substance block 14 magnetic force low temperature resistant iron-nickel alloy magnetic seal spool 3 manually, play manual control check valve spool 3 to rise or land, open or close safety check.
Claims (3)
1. a LNG(LNG Liquefied natural gas) lower resistance self-control non-return control valve unit, it is characterized in that: the low temperature resistant iron-nickel alloy magnetic material of spool (3) is made, all cross sections perpendicular to its axis are circle, its top is fixed with the low sleeve (4) of the cylinder bodily form, is fixedly connected with low temperature resistant polytetrafluoroethylene sealing gasket (2) below it with clamping bolt (11), nut (12); Low temperature resistant iron-nickel alloy magnetic seal spool (3) is arranged in check valve body (1), and low temperature resistant iron-nickel alloy magnetic seal spool (3) and low temperature resistant polytetrafluoroethylene sealing gasket (2) below contact with valve seat (1-2) plane parallel together and seal; Safety check door closure (8), low temperature resistant polytetrafluoroethylene sealing gasket (7) are connected with check valve body (1) upper end by bolt and nut link (9); Safety check door closure (8) is welded with the upper guide bush (5) of the cylinder bodily form below, upper guide bush (5) slides and inserts in low sleeve (4), cylindrical seal spring (6) is installed outside upper guide bush (5), Packing spring (6) upper-end surface compresses safety check door closure (8), and lower end surface compression low sleeve (4) and spool (3) are on valve seat (1-2) sealing surface; Safety check door closure (8) is mounted with safety check iron core (10-1), safety check electromagnetic coil (10-2) above, external robot control system(RCS) (10-3) and pressure sensing/transmitter (10-5) and 220V power supply (10-4), pressure sensing/transmitter (10-5) is arranged on safety check outlet conduit (13).
2. a kind of LNG(LNG Liquefied natural gas according to claim 1) lower resistance self-control non-return control valve unit, it is characterized in that: spool (3) is made with common ferromagnetic substance.
3. a kind of LNG(LNG Liquefied natural gas according to claim 1) lower resistance self-control non-return control valve unit, it is characterized in that: substitute safety check iron core (10-1), safety check electromagnetic coil (10-2), robot control system(RCS) (10-3), pressure sensing/transmitter (10-5) and 220V power supply (10-4) with ferromagnetic substance block (14), lay ferromagnetic substance block (14) manually on safety check door closure (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520356682.XU CN204739266U (en) | 2015-05-29 | 2015-05-29 | LNG ( liquefied natural gas ) hangs down resistance automatic control check valve device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520356682.XU CN204739266U (en) | 2015-05-29 | 2015-05-29 | LNG ( liquefied natural gas ) hangs down resistance automatic control check valve device |
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| CN204739266U true CN204739266U (en) | 2015-11-04 |
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| CN201520356682.XU Expired - Fee Related CN204739266U (en) | 2015-05-29 | 2015-05-29 | LNG ( liquefied natural gas ) hangs down resistance automatic control check valve device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105352711A (en) * | 2015-11-02 | 2016-02-24 | 新昌县利永达制冷机械有限公司 | Constant pressure valve and detection device and detection method thereof |
| CN109404544A (en) * | 2018-10-29 | 2019-03-01 | 镇江市鑫浩塑胶有限公司 | A kind of compound double check valve (DCV) of copper modeling |
| CN109595375A (en) * | 2019-01-28 | 2019-04-09 | 卞洪丽 | A kind of oil field pipe delivery safety valve |
| CN110397770A (en) * | 2019-07-31 | 2019-11-01 | 江苏圣泰阀门有限公司 | A kind of check-valves |
| CN110873255A (en) * | 2019-08-20 | 2020-03-10 | 中海油(福建)应急维修有限责任公司 | Low-temperature pipeline flange cladding device and method |
| CN115628398A (en) * | 2022-09-21 | 2023-01-20 | 沪东中华造船(集团)有限公司 | Main shielding leakage flow guide system and method for B-type enclosure system |
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2015
- 2015-05-29 CN CN201520356682.XU patent/CN204739266U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105352711A (en) * | 2015-11-02 | 2016-02-24 | 新昌县利永达制冷机械有限公司 | Constant pressure valve and detection device and detection method thereof |
| CN105352711B (en) * | 2015-11-02 | 2018-03-02 | 浙江利永达制冷机械有限公司 | A kind of constant pressure valve and its detection means and detection method |
| CN109404544A (en) * | 2018-10-29 | 2019-03-01 | 镇江市鑫浩塑胶有限公司 | A kind of compound double check valve (DCV) of copper modeling |
| CN109404544B (en) * | 2018-10-29 | 2024-02-23 | 镇江市鑫浩塑胶有限公司 | Copper-plastic composite double check valve |
| CN109595375A (en) * | 2019-01-28 | 2019-04-09 | 卞洪丽 | A kind of oil field pipe delivery safety valve |
| CN110397770A (en) * | 2019-07-31 | 2019-11-01 | 江苏圣泰阀门有限公司 | A kind of check-valves |
| CN110397770B (en) * | 2019-07-31 | 2020-11-13 | 江苏圣泰阀门有限公司 | Check valve |
| CN110873255A (en) * | 2019-08-20 | 2020-03-10 | 中海油(福建)应急维修有限责任公司 | Low-temperature pipeline flange cladding device and method |
| CN115628398A (en) * | 2022-09-21 | 2023-01-20 | 沪东中华造船(集团)有限公司 | Main shielding leakage flow guide system and method for B-type enclosure system |
| CN115628398B (en) * | 2022-09-21 | 2024-05-14 | 沪东中华造船(集团)有限公司 | Main shielding leakage flow guiding system and method for B-type containment system |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151104 Termination date: 20160529 |
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| CF01 | Termination of patent right due to non-payment of annual fee |