CN104482401A - Bi-fuel gas pressure-reducing releasing device - Google Patents
Bi-fuel gas pressure-reducing releasing device Download PDFInfo
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- CN104482401A CN104482401A CN201410743994.6A CN201410743994A CN104482401A CN 104482401 A CN104482401 A CN 104482401A CN 201410743994 A CN201410743994 A CN 201410743994A CN 104482401 A CN104482401 A CN 104482401A
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Abstract
The invention relates to the field of pressure-reducing release of fuel gas and particularly relates to a bi-fuel gas pressure-reducing releasing device. The device comprises an LNG gaseous phase interface unit, an LNG liquid phase interface unit, a CNG interface unit, a filter unit, a voltage pressurizing and stabilizing unit, a water bath heating unit, a primary voltage-regulating unit, a secondary voltage-regulating unit, a third voltage-regulating unit and an output unit, wherein the LNG gaseous phase interface unit is used for connecting gaseous phase LNG, the LNG liquid phase interface unit is used for connecting liquid phase LNG; the CNG interface unit is used for connecting CNG; the filter unit is used for filtering gas; the voltage pressurizing and stabilizing unit is used for pressurizing and stabilizing the connected gaseous phase LNG; the water bath heating unit is used for heating the connected liquid phase LNG and/or the connected CNG; the primary voltage-regulating unit is used for regulating the voltage of the heated CNG to 1.0MPa; the secondary voltage-regulating unit is used for secondarily regulating the voltages to 0.4MPa for the pressurized and stabilized gaseous phase LNG, the heated liquid phase LNG and the CNG primarily regulated in voltage; the third voltage-regulating unit is used for thirdly regulating the voltages to 4Kpa for the gaseous phase LNG, the liquid phase LNG and the CNG which are secondarily regulated in voltage; the output unit is used for feeding gas which is thirdly regulated in voltage to a downstream pipe network, so that the occupied area of the device can be effectively reduced and the economical input of the user can be effectively lowered.
Description
Technical field
The present invention relates to gas pressure-reducing release field, be specifically related to a kind of two gas pressure-reducing releasing device.
Background technique
Because of LNG(Liquefied Natural Gas, LNG Liquefied natural gas) and CNG(Compressed Natural Gas, compressed natural gas) physical state under storage requirement is different, these two kinds of decompression release device schemes traditional ignore used medium in the on all four fact of its gas property after gasification and heating, select the decompression release device scheme of the independent air feed of LNG, CNG, therefore, need to install a set of LNG decompression release device and a set of CNG decompression release device respectively at the air feed point of user, guarantee user uses LNG and CNG.Its shortcoming is: the floor space 1, increasing device; 2, the economic input of equipment is added; 3, traditional LNG decompression release device gas phase compression portion, without stable-pressure device, makes gaseous pressure in storage tank unstable, relies on the flow rate of liquid of gaseous pressure discharge also unstable.
In view of this, need to provide a kind of two gas pressure-reducing releasing device, effectively can reduce the floor space of device, reduce the economic input of user, add stable-pressure device at gas phase compression portion simultaneously, all the time there is the gaseous pressure that stable in guarantee storage tank, make the gas flow rate of discharge relatively stable.
Summary of the invention
The object of the invention is to solve the problem, a kind of two gas pressure-reducing releasing device is provided, effectively can reduce the floor space of device, reduce the economic input of user, add stable-pressure device at gas phase compression portion simultaneously, all the time there is the gaseous pressure that stable in guarantee storage tank, make the gas flow rate of discharge relatively stable.
For achieving the above object, the technical solution used in the present invention is:
A kind of two gas pressure-reducing releasing device, comprising: LNG gas phase interface unit, for accessing gas phase LNG; LNG liquid phase interface unit, for accessing liquid phase LNG; CNG interface unit, for accessing CNG; Filter element, for filtering gas; Supercharging voltage regulation unit, for carrying out supercharging voltage stabilizing to the gas phase LNG of access; Heating water bath unit, for heating the liquid phase LNG of access and/or the CNG of access; One-level pressure regulation unit, for heating after CNG pressure regulation to 1.0Mpa; Second voltage regulation unit, for the gas phase LNG after supercharging voltage stabilizing, the CNG after the liquid phase LNG after heating and one-level pressure regulation carries out second voltage regulation to 0.4Mpa; Three grades of pressure regulation unit, for carrying out three grades of pressure regulation to 4Kpa to the gas phase LNG after second voltage regulation, liquid phase LNG and CNG; Output unit, for sending the gas after three grades of pressure regulation into downstream pipe network.
Further, gas phase LNG is gasificated into gas after entering air-heating type gasifier heat absorption by described LNG liquid phase interface unit.
Further, described supercharging voltage regulation unit comprises pressure transmitter, Emergeny Cutoff Valves and pressure governor, when the pressure of gas phase LNG is lower than 0.5Mpa, pressure transmitter controls Emergeny Cutoff Valves and opens, a gas part after gasification enters supercharging voltage regulation unit, supplements to 0.6Mpa through pressure governor pressure regulation to the pressure of gas phase LNG.
Further, described heating water bath unit carries out heating and fully gasification to the incomplete liquid phase LNG of gasification.
Further, described one-level pressure regulation unit to heating after CNG pressure regulation to 1.0Mpa, pressure more than gas during 1.5Mpa through Safety relief valve automatic relief.
Further, described second voltage regulation unit is to the gas phase LNG after supercharging voltage stabilizing, and the CNG after the liquid phase LNG after heating and one-level pressure regulation carries out second voltage regulation to 0.4Mpa, pressure more than gas during 0.6Mpa through Safety relief valve automatic relief.
Further, described three grades of pressure regulation unit are to the gas phase LNG after second voltage regulation, liquid phase LNG and CNG carries out three grades of pressure regulation to 4Kpa, and pressure is more than gas during 6Kpa through Safety relief valve automatic relief, and pressure transmitter controls the gas that Emergeny Cutoff Valves cuts off upstream simultaneously.
Further, described output unit comprises flowmeter, and the gas after three grades of pressure regulation sends into downstream pipe network after flowmeter metering.
After adopting said structure, beneficial effect of the present invention is: the two gas pressure-reducing releasing device of one of the present invention, effectively can reduce the floor space of device, reduce the economic input of user, add stable-pressure device at gas phase compression portion simultaneously, all the time there is the gaseous pressure that stable in guarantee storage tank, make the gas flow rate of discharge relatively stable.
Accompanying drawing explanation
Fig. 1 is the structural representation of of the present invention pair of gas pressure-reducing releasing device.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further illustrated.
As shown in Figure 1, the two gas pressure-reducing releasing device of one of the present invention, comprising: LNG gas phase interface unit, for accessing gas phase LNG; LNG liquid phase interface unit, for accessing liquid phase LNG; CNG interface unit, for accessing CNG; Filter element, for filtering gas; Supercharging voltage regulation unit, for carrying out supercharging voltage stabilizing to the gas phase LNG of access; Heating water bath unit, for heating the liquid phase LNG of access and/or the CNG of access; One-level pressure regulation unit, for heating after CNG pressure regulation to 1.0Mpa; Second voltage regulation unit, for the gas phase LNG after supercharging voltage stabilizing, the CNG after the liquid phase LNG after heating and one-level pressure regulation carries out second voltage regulation to 0.4Mpa; Three grades of pressure regulation unit, for carrying out three grades of pressure regulation to 4Kpa to the gas phase LNG after second voltage regulation, liquid phase LNG and CNG; Output unit, for sending the gas after three grades of pressure regulation into downstream pipe network.
Gas phase LNG is gasificated into gas after entering air-heating type gasifier heat absorption by LNG liquid phase interface unit.
Supercharging voltage regulation unit comprises pressure transmitter, Emergeny Cutoff Valves and pressure governor, when the pressure of gas phase LNG is lower than 0.5Mpa, pressure transmitter controls Emergeny Cutoff Valves and opens, a gas part after gasification enters supercharging voltage regulation unit, supplements to 0.6Mpa through pressure governor pressure regulation to the pressure of gas phase LNG.
Heating water bath unit carries out heating and fully gasification to the incomplete liquid phase LNG of gasification.
One-level pressure regulation unit to heating after CNG pressure regulation to 1.0Mpa, pressure more than gas during 1.5Mpa through Safety relief valve automatic relief.
Second voltage regulation unit is to the gas phase LNG after supercharging voltage stabilizing, and the CNG after the liquid phase LNG after heating and one-level pressure regulation carries out second voltage regulation to 0.4Mpa, pressure more than gas during 0.6Mpa through Safety relief valve automatic relief.
Three grades of pressure regulation unit carry out three grades of pressure regulation to 4Kpa to the gas phase LNG after second voltage regulation, liquid phase LNG and CNG, and pressure is more than gas during 6Kpa through Safety relief valve automatic relief, and pressure transmitter controls the gas that Emergeny Cutoff Valves cuts off upstream simultaneously.
Output unit comprises flowmeter, and the gas after three grades of pressure regulation sends into downstream pipe network after flowmeter metering.
When being used alone CNG, the CNG interface C in CNG bottle group and this device is connected by high-voltage tube, throttle down 2-4, then open valve 2-1 and Emergeny Cutoff Valves 3-3(3-3 flat time often open), the CNG pressurized gas of 20Mpa enter water-bath type heater 6 and heat after filter 5-2 filters, open the front and back valve of pressure governor 7-1,7-2 again, gas after the pressure regulation of one-level pressure governor pressure to 1.0Mpa, pressure more than gas during 1.5Mpa through Safety relief valve 10-1 automatic relief.Open the front and back valve of pressure governor 7-3, gas after the pressure regulation of second voltage regulation device pressure to 0.4Mpa, pressure more than gas during 0.6Mpa through Safety relief valve 10-2 automatic relief.Open the front and back valve of pressure governor 7-4; gas after three grades of pressure governor pressure regulation pressure to 4Kpa; pressure is more than gas during 6Kpa through Safety relief valve 10-3 automatic relief, and the Emergeny Cutoff Valves of pressure transmitter 8-2 control simultaneously 3-3 cuts off upstream gas and is not damaged to protect upstream device.Open the front and back valve of flowmeter 9, gas enters downstream tube net after flowmeter 9 measures.
When being used alone LNG, connect the LNG interface in LNG bottle group and this device by pipeline, the gas phase pipe in LNG bottle group connects the gas phase A mouth in this device, and the gas phase pipe in LNG bottle group connects the gas phase B mouth in this device.Open low temperature liquid phase valve 1 and Emergeny Cutoff Valves 3-2(3-2 flat time often open), LNG enter air-heating type gasifier 4 absorb heat after be gasificated into gas.During summer, ambient temperature is high, air-heating type gasifier 4 can ensure the abundant gasification of LNG, so want throttle down 3-3, if ambient temperature is low during other seasons, air-heating type gasifier 4 surface area frost needs auxiliary heating to strengthen vaporization ability time serious, so want throttle down 2-2 to open valve 2-3 simultaneously, make the incomplete liquid of gasification enter water-bath type electric heater 6 by filter 5-1 and fully gasify.Gas after gasification is identical with CNG character.Continue the front and back valve opening valve 2-4 and pressure governor 7-3, gas after the pressure regulation of second voltage regulation device pressure to 0.4Mpa, pressure more than gas during 0.6Mpa through Safety relief valve 10-2 automatic relief.Open the front and back valve of pressure governor 7-4; gas after three grades of pressure governor pressure regulation pressure to 4Kpa; pressure is more than gas during 6Kpa through Safety relief valve 10-3 automatic relief, and the Emergeny Cutoff Valves of pressure transmitter 8-2 control simultaneously 3-3 cuts off upstream gas and is not damaged to protect upstream device.Open the front and back valve of flowmeter 9, gas enters downstream tube net after flowmeter 9 measures.On the other hand, when the gaseous pressure in LNG bottle group is lower than 0.5Mpa, pressure transmitter 8-3 controls Emergeny Cutoff Valves 3-1 and opens (3-1 often closes at ordinary times), a gas part after gasification enters gas phase supercharging device, enter LNG bottle group through pressure governor 7-5 pressure regulation to 0.6M and supplement gaseous pressure, thus ensure that the liquid in bottle group keeps stable flow velocity to enter decompression release device.
When to use LNG and CNG air feed simultaneously, connect the CNG interface C in CNG bottle group and this device by high-voltage tube on the one hand.Throttle down 2-4, then open valve 2-1 and Emergeny Cutoff Valves 3-3(3-3 flat time often open), the CNG pressurized gas of 20Mpa enter water-bath type heater 6 and heat after filter 5-2 filters, open the front and back valve of pressure governor 7-1,7-2 again, gas after the pressure regulation of one-level pressure governor pressure to 1.0Mpa, pressure more than gas during 1.5Mpa through Safety relief valve 10-1 automatic relief.Connect the LNG interface in LNG bottle group and this device by pipeline on the other hand, the gas phase pipe in LNG bottle group connects the gas phase A mouth in this decompression release device, and the gas phase pipe in LNG bottle group connects the gas phase B mouth in this decompression release device.Open low temperature liquid phase valve 1 and Emergeny Cutoff Valves 3-2(3-2 flat time often open), LNG enter air-heating type gasifier 4 absorb heat after be gasificated into gas.During summer, ambient temperature is high, air-heating type gasifier 4 can ensure the abundant gasification of bright LNG, so want throttle down 2-3, if ambient temperature is low during other seasons, air-heating type gasifier 4 surface area frost needs auxiliary heating to strengthen vaporization ability time serious, so want throttle down 2-2 to open valve 2-3 simultaneously, make the incomplete liquid of gasification enter water-bath type electric heater 6 by filter 5-1 and fully gasify.Gas after gasification is identical with CNG character, so the upstream device of LNG and CNG can be general, thus realizes the object that this programme unites two into one.Continue the front and back valve opening valve 2-4 and pressure governor 7-3, gas after the pressure regulation of second voltage regulation device pressure to 0.4Mpa, pressure more than gas during 0.6Mpa through Safety relief valve 10-2 automatic relief.Open the front and back valve of pressure governor 7-4; gas after three grades of pressure governor pressure regulation pressure to 4Kpa; pressure is more than gas during 6Kpa through Safety relief valve 10-3 automatic relief, and the Emergeny Cutoff Valves of pressure transmitter 8-2 control simultaneously 3-3 cuts off upstream gas and is not damaged to protect upstream device.Open flowmeter 9 and enter late gate, gas enters downstream tube net after flowmeter 9 measures.On the other hand, when the gaseous pressure in LNG bottle group is lower than 0.5Mpa, pressure transmitter 8-3 controls Emergeny Cutoff Valves 3-1 to start (3-1 often closes at ordinary times), a gas part after gasification enters gas phase supercharging device, enter LNG bottle group through pressure governor 7-5 pressure regulation to 0.6M and supplement gaseous pressure, thus ensure that the liquid in bottle group keeps stable flow velocity to enter decompression release device.
For the safety of Reliable guarantee upstream device, pressure transmitter 8-1 and 8-2 is added after second voltage regulation, real-time for the superpressure signal collected is transferred to Emergeny Cutoff Valves 3-2 or 3-3 by pressure transmitter 8-1,8-2, and controls Emergeny Cutoff Valves 3-2 or 3-3 action to cut off upstream gas.
The above is only better embodiment of the present invention, therefore all equivalences done according to structure, feature and the principle described in patent claim of the present invention change or modify, and are included in patent claim of the present invention.
Claims (8)
1. a two gas pressure-reducing releasing device, is characterized in that, comprising:
LNG gas phase interface unit, for accessing gas phase LNG;
LNG liquid phase interface unit, for accessing liquid phase LNG;
CNG interface unit, for accessing CNG;
Filter element, for filtering gas;
Supercharging voltage regulation unit, for carrying out supercharging voltage stabilizing to the gas phase LNG of access;
Heating water bath unit, for heating the liquid phase LNG of access and/or the CNG of access;
One-level pressure regulation unit, for heating after CNG pressure regulation to 1.0Mpa;
Second voltage regulation unit, for the gas phase LNG after supercharging voltage stabilizing, the CNG after the liquid phase LNG after heating and one-level pressure regulation carries out second voltage regulation to 0.4Mpa;
Three grades of pressure regulation unit, for carrying out three grades of pressure regulation to 4Kpa to the gas phase LNG after second voltage regulation, liquid phase LNG and CNG;
Output unit, for sending the gas after three grades of pressure regulation into downstream pipe network.
2. according to claim 1 pair of gas pressure-reducing releasing device, is characterized in that, gas phase LNG is gasificated into gas after entering air-heating type gasifier heat absorption by described LNG liquid phase interface unit.
3. according to claim 2 pair of gas pressure-reducing releasing device, it is characterized in that, described supercharging voltage regulation unit comprises pressure transmitter, Emergeny Cutoff Valves and pressure governor, when the pressure of gas phase LNG is lower than 0.5Mpa, pressure transmitter controls Emergeny Cutoff Valves and opens, and the gas part after gasification enters supercharging voltage regulation unit, supplements to 0.6Mpa through pressure governor pressure regulation to the pressure of gas phase LNG.
4. according to claim 1 pair of gas pressure-reducing releasing device, is characterized in that, described heating water bath unit carries out heating and fully gasification to the incomplete liquid phase LNG of gasification.
5. according to claim 1 pair of gas pressure-reducing releasing device, is characterized in that, described one-level pressure regulation unit to heating after CNG pressure regulation to 1.0Mpa, pressure more than gas during 1.5Mpa through Safety relief valve automatic relief.
6. according to claim 1 pair of gas pressure-reducing releasing device, it is characterized in that, described second voltage regulation unit is to the gas phase LNG after supercharging voltage stabilizing, CNG after liquid phase LNG after heating and one-level pressure regulation carries out second voltage regulation to 0.4Mpa, pressure more than gas during 0.6Mpa through Safety relief valve automatic relief.
7. according to claim 1 pair of gas pressure-reducing releasing device, it is characterized in that, described three grades of pressure regulation unit carry out three grades of pressure regulation to 4Kpa to the gas phase LNG after second voltage regulation, liquid phase LNG and CNG, pressure more than gas during 6Kpa through Safety relief valve automatic relief.
8. according to claim 6 pair of gas pressure-reducing releasing device, is characterized in that, described output unit comprises flowmeter, and the gas after three grades of pressure regulation sends into downstream pipe network after flowmeter metering.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410743994.6A CN104482401B (en) | 2014-12-09 | 2014-12-09 | A kind of double gas pressure-reducing release devices |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410743994.6A CN104482401B (en) | 2014-12-09 | 2014-12-09 | A kind of double gas pressure-reducing release devices |
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| CN104482401A true CN104482401A (en) | 2015-04-01 |
| CN104482401B CN104482401B (en) | 2018-08-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109196269A (en) * | 2015-12-27 | 2019-01-11 | 通用电气石油和天然气公司 | Reduce the pressure of the compressed gas from storage tank |
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| JP2002372193A (en) * | 2001-06-15 | 2002-12-26 | Yazaki Corp | Liquefied gas supplying device |
| CN101479402A (en) * | 2006-06-27 | 2009-07-08 | 株式会社富士金 | Vaporizer/supplier of material and automatic pressure regulator for use therein |
| CN101520128A (en) * | 2009-03-24 | 2009-09-02 | 罗东晓 | Movable type method and device for supplying liquid phase natural gas and gas phase natural gas |
| CN202158352U (en) * | 2011-04-14 | 2012-03-07 | 北京中燃伟业燃气有限公司 | L-CNG (liquefied-compressed natural gas) dual-gas resource gas supply device |
| CN104006298A (en) * | 2014-06-09 | 2014-08-27 | 广西玉柴机器股份有限公司 | Multifunctional natural gas pressure adjusting cabinet |
-
2014
- 2014-12-09 CN CN201410743994.6A patent/CN104482401B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002372193A (en) * | 2001-06-15 | 2002-12-26 | Yazaki Corp | Liquefied gas supplying device |
| CN101479402A (en) * | 2006-06-27 | 2009-07-08 | 株式会社富士金 | Vaporizer/supplier of material and automatic pressure regulator for use therein |
| CN101520128A (en) * | 2009-03-24 | 2009-09-02 | 罗东晓 | Movable type method and device for supplying liquid phase natural gas and gas phase natural gas |
| CN202158352U (en) * | 2011-04-14 | 2012-03-07 | 北京中燃伟业燃气有限公司 | L-CNG (liquefied-compressed natural gas) dual-gas resource gas supply device |
| CN104006298A (en) * | 2014-06-09 | 2014-08-27 | 广西玉柴机器股份有限公司 | Multifunctional natural gas pressure adjusting cabinet |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109196269A (en) * | 2015-12-27 | 2019-01-11 | 通用电气石油和天然气公司 | Reduce the pressure of the compressed gas from storage tank |
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| CN104482401B (en) | 2018-08-17 |
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