CN202812777U - Float-type gas-liquid separator for liquefied natural gas filling machine - Google Patents
Float-type gas-liquid separator for liquefied natural gas filling machine Download PDFInfo
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- CN202812777U CN202812777U CN201220488589.0U CN201220488589U CN202812777U CN 202812777 U CN202812777 U CN 202812777U CN 201220488589 U CN201220488589 U CN 201220488589U CN 202812777 U CN202812777 U CN 202812777U
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- float
- valve rod
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- type gas
- liquid separator
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Abstract
The utility model relates to a float-type gas-liquid separator for a liquefied natural gas filling machine, which comprises a shell and a liquid level control mechanism, wherein the shell is provided with an inlet pipe, a liquid outlet and an exhaust hole, the liquid level control mechanism is arranged in the shell and is communicated with the exhaust hole; the liquid level control mechanism comprises a floater and a liquid level control valve; the floater is supported in the shell by a floater support; the floater support is arranged on the inner wall of the shell; the liquid level control valve comprises a valve sleeve and a valve rod which are connected and matched with each other; the valve sleeve is connected with the exhaust hole; the valve rod leans against the floater by the self weight, and the centre lines of the valve rod, the valve sleeve and the floater are coincided; and the valve rod is respectively provided with an opening position and a closing position corresponding to the valve sleeve. The float-type gas-liquid separator improves the metering accuracy of the gas filling machine of a liquefied natural gas (LNG) automobile, and is not interfered by pressure difference between gas phase and liquid phase of a medium.
Description
Technical field
The utility model relates to a kind of LNGV (liquefied natural gas vehicle) filling machine, particularly a kind of float type gas-liquid separator that is used for liquefied natural gas aerating machine that improves the measuring accuracy of LNGV (liquefied natural gas vehicle) filling machine.
Background technique
In China LNG(LNG Liquefied natural gas) as an alternative the energy approved gradually, industry development is rapid, use amount as the capital equipment LNG refueling machine of LNG Vehicle Fueling Station increases sharply, the flowmeter that uses in the LNG refueling machine is Coriolis-type quality formula flowmeter, this flowmeter is comparatively responsive to gas-liquid two-phase flow, during the metering liquid phase medium, the measuring accuracy of gas phase media proportion size appreciable impact flowmeter, for removing or reducing gas phase media, adopt a kind of assembly that is gas-liquid separator more.
Present existing gas-liquid separator has two kinds of forms, a kind of is fixing latus rectum gas-discharging type, gas passes through the fixedly continuous Exhaust Gas of latus rectum passage or liquid in the aerating process, and flow back to the gas station storage tank, the major defect of this pattern is: without there being liquid to flow out under the gaseous state, loss filling flow, the LNG refueling machine that slowed down filling speed.Another kind is the electric control exhaust formula, and by temperature, Density Detection, when temperature is higher than a certain temperature or density during less than a certain density, thinking has gas in the liquid, by opening gas circuit valve door Exhaust Gas; When temperature is lower than a certain temperature or density during greater than a certain density, thinks in the liquid and then to close the gas circuit valve without gas.The major defect of this pattern is to have increased valve acquisition cost and automatically controlled cost, and by having or not gas also not accurate enough in temperature or the density judgement medium.
The model utility content
Technical problem to be solved in the utility model provides a kind of float type gas-liquid separator that is used for liquefied natural gas aerating machine that can improve the measuring accuracy of LNGV (liquefied natural gas vehicle) filling machine and not be subjected to the interference of medium gas phase liquid phase pressure difference.
To achieve these goals, the utility model provides a kind of float type gas-liquid separator for liquefied natural gas aerating machine, comprise that one is respectively arranged with inlet duct, the housing of liquid outlet and relief opening, wherein, comprise that also one is arranged in the described housing and the level controling mechanism that is communicated with described relief opening, described level controling mechanism comprises float and float liquid level control valve, described float is supported in the described housing by a float holder, described float holder is installed on the inwall of described housing, described float liquid level control valve comprises and interconnecting and adaptive valve pocket and valve rod, described valve pocket is connected with described relief opening, described valve rod is resisted against on the described float and the center line of described valve rod by own wt, the center line of described valve pocket and the central lines of described float, described valve rod has respectively an open position and a closed position with respect to described valve pocket.
Above-mentioned float type gas-liquid separator, wherein, described valve pocket comprises air cavity, suction port, valve rod hole, epicoele and cavity of resorption, described air cavity is positioned at the top of described valve pocket and is communicated with described relief opening and described cavity of resorption respectively, described epicoele is communicated with described suction port, the bottom of described epicoele and described cavity of resorption is respectively arranged with described valve rod hole, and described cavity of resorption is communicated with the inner chamber of described housing.
Above-mentioned float type gas-liquid separator, wherein, described valve rod comprises the base with closed end and the hollow tube with opening end, described hollow tube is installed on the described base, described hollow tube is located in the described valve pocket and along described valve pocket by described valve rod hole and moves axially, and is provided with areole on the sidewall on described hollow tube top.
Above-mentioned float type gas-liquid separator, wherein, the bottom of described hollow tube is provided with discharge orifice.
Above-mentioned float type gas-liquid separator wherein, also is provided with position limit pin on the described hollow tube, described position limit pin is arranged in the inner chamber of described hollow tube, and the two ends of described position limit pin are installed on the tube wall of described hollow tube and extend outside the tube wall of described hollow tube.
Above-mentioned float type gas-liquid separator, wherein, the lower surface of described base also is provided with the groove adaptive with described float.
Above-mentioned float type gas-liquid separator wherein, also is provided with sealing gasket on the described base.
Above-mentioned float type gas-liquid separator, wherein, the end outlet of described inlet duct is an angular cut, the tangent plane of described angular cut is towards described relief opening.
Above-mentioned float type gas-liquid separator, wherein, described housing comprises urceolus, drain pipe and pipe cap, and described pipe cap is connected with the top of described urceolus by flange, and described drain pipe is connected with the bottom of described urceolus and is welded to connect part for seamless pipe.
Above-mentioned float type gas-liquid separator, wherein, described relief opening is arranged on the top of described pipe cap, and described liquid outlet is arranged on the bottom of described drain pipe, described inlet duct is arranged on middle part one side of described urceolus, and described valve pocket is connected with described relief opening by screw thread.
Beneficial functional of the present utility model is:
Gas-liquid separation effect of the present utility model is obvious, disturb the float type liquid level control valve can carry out reliably switch motion without pressure, and then the automatic control of realization liquid level, control valve is not subjected to the interference of medium gas phase liquid phase pressure difference, can improve the measuring accuracy of LNGV (liquefied natural gas vehicle) filling machine.
Below in conjunction with the drawings and specific embodiments the utility model is described in detail, but not as to restriction of the present utility model.
Description of drawings
Fig. 1 is the utility model one embodiment's structural representation;
Fig. 2 is the utility model one embodiment's fluid level control valve structural representation;
Fig. 3 is the utility model one embodiment's valve pocket structural representation;
Fig. 4 is the utility model one embodiment's stem structure schematic representation.
Wherein, reference character
1 relief opening
100 housings
20 level controling mechanisms
2 float liquid level control valves
21 valve pockets
201 air cavitys, 202 epicoeles
203 cavity of resorptions, 204 inner chambers
205 suction ports, 206 areoles
207 discharge orifices, 208 grooves
209 valve rod holes
22 valve rods
22a opening end 22b closed end
220 bases, 221 hollow tubes
23 position limit pins
24 sealing gaskets
3 pipe caps
4 floats
50 flanges
5 upper flanges
6 lower flanges
7 inlet ducts
71 outlets
8 urceolus, 90 drain pipes
The 10 float holders of 9 liquid outlets
11 flange gaskets, 12 fastening pieces
Embodiment
Below in conjunction with accompanying drawing structural principle of the present invention and working principle are done concrete description:
Referring to Fig. 1 and Fig. 2, Fig. 1 is the utility model one embodiment's structural representation, and Fig. 2 is the utility model one embodiment's fluid level control valve structural representation.Float type gas-liquid separator for liquefied natural gas aerating machine of the present utility model, comprise that one is respectively arranged with the housing 100 of inlet duct 7, liquid outlet 9 and relief opening 1, comprise that also one is arranged in the described housing 100 and the level controling mechanism 20 that is communicated with described relief opening 1, described level controling mechanism 20 comprises float 4 and float liquid level control valve 2, described float 4 is supported in the described housing 100 by a float holder 10, described float holder 10 is installed on the inwall of described housing 100, one side the medium that has of float holder 10 passes through passage.Described float liquid level control valve 2 comprises and interconnecting and adaptive valve pocket 21 and valve rod 22, described valve pocket 21 is connected with described relief opening 1, described valve rod 22 is resisted against on the described float 4 by own wt and the center line of described valve rod 22, the center line of described valve pocket 21 and the central lines of described float 4, and described valve rod 22 has respectively an open position and a closed position with respect to described valve pocket 21.
Referring to Fig. 3, Fig. 3 is the utility model one embodiment's valve pocket structural representation.Described valve pocket 21 comprises air cavity 201, suction port 205, valve rod 22 holes, epicoele 202 and cavity of resorption 203, described air cavity 201 is positioned at the top of described valve pocket 21 and is communicated with described relief opening 1 and described cavity of resorption 203 respectively, described epicoele 202 is communicated with described suction port 205, the bottom of described epicoele 202 and described cavity of resorption 203 is respectively arranged with described valve rod hole 209, and described cavity of resorption 203 is communicated with the inner chamber of described housing 100.
Referring to Fig. 4, Fig. 4 is the utility model one embodiment's stem structure schematic representation.Described valve rod 22 comprises the base 220 with closed end 22b and the hollow tube 221 with opening end 22a, described hollow tube 221 is installed on the described base 220, described hollow tube 221 is located in the described valve pocket 21 and along described valve pocket 21 by described valve rod hole 209 and moves axially, and is provided with areole 206 on the sidewall on described hollow tube 221 tops.The inner chamber 204 of valve rod 22 communicates with valve rod 22 areoles 206, and the bottom of described hollow tube 221 is provided with discharge orifice 207.Also be provided with position limit pin 23 on the described hollow tube 221, described position limit pin 23 is arranged in the inner chamber 204 of described hollow tube 221, and the two ends of described position limit pin 23 are installed on the tube wall of described hollow tube 221 and extend outside the tube wall of described hollow tube 221.The lower surface of described base 220 also is provided with the groove 208 adaptive with described float 4.Also be provided with sealing gasket 24 on the described base 220.Valve rod 22 cooperates with valve pocket 21, and valve rod 22 can move up and down in valve pocket 21, and the terminal point of decline is subjected to the terminal point of position limit pin 23 controls, rising by sealing gasket 24 controls.Float 4 is connected with valve rod 22 machinery-frees, float 4 relies on float holder 10 control floats 4 when falling the position, float 4 is at the position of center line of valve rod 22, valve rod 22 lower end surfaces are groove 208, when float 4 rose, the reaction force of the buoyancy that the groove 208 of valve rod 22 produces promoted float 4 to the position of center line of valve rod 22.
The end outlet 71 of described inlet duct 7 is an angular cut, and the tangent plane of described angular cut is towards described relief opening 1.Described housing 100 comprises urceolus 8, drain pipe 90 and pipe cap 3, and described pipe cap 3 is connected with the top of described urceolus 8 by flange 50, and described drain pipe 90 is connected with the bottom of described urceolus 8 and is welded to connect part for seamless pipe.Flange 50 comprises upper flange 5 and lower flange 6, and connects by fastening piece 12, also is provided with flange gasket 11 between this upper and lower flange 5,6.Described relief opening 1 is arranged on the top of described pipe cap 3, and described liquid outlet 9 is arranged on the bottom of described drain pipe 90, and described inlet duct 7 is arranged on middle part one side of described urceolus 8, and described valve pocket 21 is connected with described relief opening 1 by screw thread.
Two-phase medium enters gas-liquid separator by inlet duct 7, and liquid phase medium sinks to entering the filling machine pipeline by liquid outlet 9, and gas phase media rises by level controling mechanism 20, discharges from relief opening 1.Along with the discharge of gas phase, liquid level rises, and the gravity of the buoyancy overcoming valve rod 22 of float 4 and valve rod 22 rise gradually with the frictional force of valve pocket 21, and when valve rod 22 rose to terminal point, the gas circuit of gas-liquid separator was closed, and gas phase is no longer discharged by gas-liquid separator.When gas phase increases, when liquid level descended, float 4 descended, and valve rod 22 is by deadweight decline, and when dropping to a certain degree, the inner air path of gas-liquid separator reopens, and gas phase is discharged by gas-liquid separator again.The continuous discharge of gas phase, the medium that assurance enters the LNG filling machine is liquid phase medium, without gas phase or weak breath phase, has guaranteed the measuring accuracy of filling machine.
Float 4 preferred ultra-thin hollow metal steel balls, float 4 can contact with valve rod 22 closed end 22b when rising, buoyancy promotes valve rod 22 and rises, when rising to terminal point, sealing gasket 24 spacing and sealings by valve rod 22 closed end 22b: when float 4 descends, valve rod 22 descends by self gravitation, limited location pin 23 on the valve rod 22, the final position that control valve rod 22 descends.On the valve rod 22 lower end sidewalls discharge orifice 207 is arranged, when valve rod 22 descends, the liquid that vapor condensation generates in the petcock door row gas process, increase burden to float 4 when avoiding valve rod 22 again to rise, affect float 4 lifting positions, when valve rod 22 rises to terminal point, discharge orifice 207 will be closed, avoid medium further to discharge, the realization gas-liquid separator reliably cuts out.
Valve rod 22 is when the upper value, and the areole 206 on the valve rod 22 communicates with the entrance of fluid level control valve, because valve rod 22 lower end closed, at this moment, fluid level control valve is in closed state, discharges from gas-liquid separator without medium.Valve rod 22 drops to certain position with float 4 and begins, the areole 206 of valve rod 22 communicates with the cavity of resorption 203 of valve pocket 21, and the entrance of gas by level controling mechanism 20, valve rod are 22 suitable for reading, the outlet of areole 206, valve pocket 21 cavity of resorptions 203, level controling mechanism 20 is through relief opening 1 drainage gas-liquid separator.When valve rod 22 was promoted to rise to peak by float 4, the areole 206 of valve rod 22 disconnected with the cavity of resorption of valve pocket 21 203, communicates with epicoele 202, and gas can not arrive the cavity of resorption 203 of valve pocket 21, and the outlet of level controling mechanism 20 is closed, and gas is no longer discharged.Because valve rod 22 is hollow tubular structure, in valve rod 22 working procedure, the top and bottom pressure balance, phenomenon incessantly can not appear not opening when this is opened, close when this is closed in the interference that is not stressed.
The utility model uses a kind of without pressure interference float type gas-liquid separation control valve, the project organization compressive resistance disturbs, opened and closed by float 4 control valves, when having gas, realization opens the valve exhaust, throttle down avoids liquid to release during without gas, avoided the float type structure affected by pressure medium, occur gas port this fit badly when closing, the appearance of the problem of not opening when this is opened.Urceolus 8 uses steel pipe flanges 50 and steel butt seamless pipe to be welded, and does not relate to the pressurized container field.Outlet 71 chamfered design of inlet duct 7 are conducive to the diffusion of medium, and scarf is liquid outlet 9 dorsad, are beneficial to gas and rise, and avoid gas to pour in the liquid and are taken away by liquid.Use ultra-thin hollow Stainless Steel Ball as float 4, solve the buoyancy problem of float 4 in the low density LNG medium.Float 4 is connected with the spool machinery-free, and float 4 relies on float holder 10 control floats 4 when lower position, and float 4 is at valve rod 22 position of center line.Valve rod 22 lower end surfaces are groove 208 structures, when float 4 rises, the reaction force of the buoyancy that valve rod 22 lower end surfaces produce promotes float 4 to valve rod 22 position of center line, the valve rod 22 that minimizing valve rod 22 stressed off-centre cause and the friction of valve pocket 21, this control valve is not subjected to the interference of medium gas phase and liquid phase pressure difference, and float 4 and valve rod 22 have quality and the buoyancy of coupling, and float 4 relies on the difference of buoyancy and gravity to move valve rod 22 risings, valve rod 22 relies on gravity to descend, the control exhaust process.The bottom recesses 208 of float holder 10 and valve rod 22, control float 4 is in the tram, has guaranteed the reliably working of valve rod 22.
Certainly; the utility model also can have other various embodiments; in the situation that does not deviate from the utility model spirit and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the utility model.
Claims (10)
1. float type gas-liquid separator that is used for liquefied natural gas aerating machine, comprise that one is respectively arranged with inlet duct, the housing of liquid outlet and relief opening, it is characterized in that, comprise that also one is arranged in the described housing and the level controling mechanism that is communicated with described relief opening, described level controling mechanism comprises float and float liquid level control valve, described float is supported in the described housing by a float holder, described float holder is installed on the inwall of described housing, described float liquid level control valve comprises and interconnecting and adaptive valve pocket and valve rod, described valve pocket is connected with described relief opening, described valve rod is resisted against on the described float and the center line of described valve rod by own wt, the center line of described valve pocket and the central lines of described float, described valve rod has respectively an open position and a closed position with respect to described valve pocket.
2. float type gas-liquid separator as claimed in claim 1, it is characterized in that, described valve pocket comprises air cavity, suction port, valve rod hole, epicoele and cavity of resorption, described air cavity is positioned at the top of described valve pocket and is communicated with described relief opening and described cavity of resorption respectively, described epicoele is communicated with described suction port, the bottom of described epicoele and described cavity of resorption is respectively arranged with described valve rod hole, and described cavity of resorption is communicated with the inner chamber of described housing.
3. float type gas-liquid separator as claimed in claim 2, it is characterized in that, described valve rod comprises the base with closed end and the hollow tube with opening end, described hollow tube is installed on the described base, described hollow tube is located in the described valve pocket and along described valve pocket by described valve rod hole and moves axially, and is provided with areole on the sidewall on described hollow tube top.
4. float type gas-liquid separator as claimed in claim 3 is characterized in that, the bottom of described hollow tube is provided with discharge orifice.
5. such as claim 3 or 4 described float type gas-liquid separators, it is characterized in that, also be provided with position limit pin on the described hollow tube, described position limit pin is arranged in the inner chamber of described hollow tube, and the two ends of described position limit pin are installed on the tube wall of described hollow tube and extend outside the tube wall of described hollow tube.
6. float type gas-liquid separator as claimed in claim 5 is characterized in that, the lower surface of described base also is provided with the groove adaptive with described float.
7. float type gas-liquid separator as claimed in claim 6 is characterized in that, also is provided with sealing gasket on the described base.
8. such as claim 1,2,3,4,6 or 7 described float type gas-liquid separators, it is characterized in that the end outlet of described inlet duct is an angular cut, the tangent plane of described angular cut is towards described relief opening.
9. float type gas-liquid separator as claimed in claim 8, it is characterized in that, described housing comprises urceolus, drain pipe and pipe cap, and described pipe cap is connected with the top of described urceolus by flange, and described drain pipe is connected with the bottom of described urceolus and is welded to connect part for seamless pipe.
10. float type gas-liquid separator as claimed in claim 9, it is characterized in that, described relief opening is arranged on the top of described pipe cap, described liquid outlet is arranged on the bottom of described drain pipe, described inlet duct is arranged on middle part one side of described urceolus, and described valve pocket is connected with described relief opening by screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220488589.0U CN202812777U (en) | 2012-09-24 | 2012-09-24 | Float-type gas-liquid separator for liquefied natural gas filling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220488589.0U CN202812777U (en) | 2012-09-24 | 2012-09-24 | Float-type gas-liquid separator for liquefied natural gas filling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202812777U true CN202812777U (en) | 2013-03-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220488589.0U Expired - Lifetime CN202812777U (en) | 2012-09-24 | 2012-09-24 | Float-type gas-liquid separator for liquefied natural gas filling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202812777U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103807059A (en) * | 2014-02-26 | 2014-05-21 | 代希春 | Device for recycling absorbing waste heat of engine for fuel preheating |
| CN107304972A (en) * | 2016-04-18 | 2017-10-31 | 安瑞科(廊坊)能源装备集成有限公司 | Natural gas hydraulic substation and its unload gas system |
-
2012
- 2012-09-24 CN CN201220488589.0U patent/CN202812777U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103807059A (en) * | 2014-02-26 | 2014-05-21 | 代希春 | Device for recycling absorbing waste heat of engine for fuel preheating |
| CN103807059B (en) * | 2014-02-26 | 2016-01-06 | 代希春 | The used heat of cyclic absorption motor carries out the device of fuel-firing preheating |
| CN107304972A (en) * | 2016-04-18 | 2017-10-31 | 安瑞科(廊坊)能源装备集成有限公司 | Natural gas hydraulic substation and its unload gas system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130320 |