CN204186430U - A kind of gas distributing system pressure regulation power generating refrigeration system - Google Patents
A kind of gas distributing system pressure regulation power generating refrigeration system Download PDFInfo
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- CN204186430U CN204186430U CN201420541735.0U CN201420541735U CN204186430U CN 204186430 U CN204186430 U CN 204186430U CN 201420541735 U CN201420541735 U CN 201420541735U CN 204186430 U CN204186430 U CN 204186430U
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Abstract
The utility model discloses a kind of gas distributing system pressure regulation power generating refrigeration system, comprising: decompressor, its suction port is connected to described high pressure pipe network; The gear-box be connected with decompressor output terminal; Driven the generator of generating by gear-box, generator powered consumes cool equipment (cloud computing server that as very large in power consumption and needs cool) in power consumption; Heat-exchanger rig, one end is connected to the air outlet of decompressor, and the other end is connected to low first class pressure pipe network, and the refrigerant after heat exchange flows through cooling air unit, lowers the temperature to power consumption consumption cool equipment.The utility model is generated electricity by rock gas the produced pressure energy that expands, and powers to current consuming apparatus, decreases middle electrical network link, save investment; And by carrying out the recovery of cold energy to the cryogenic natural gas after generating, consumption cool equipment can be supplied to, because refrigerant heat exchange improves natural gas temperature, or can reduce and consume electricity or heated by natural gas, reduce energy consumption.
Description
Technical field
The differential pressure that the utility model relates to gas distributing system utilizes technical field, particularly relates to a kind of gas distributing system pressure regulation power generating refrigeration system.
Background technique
Rock gas is a kind of clean energy resource of the extensive employing in the whole world at present, for meeting the needs of long distance delivery rock gas, needs to apply high pressure to rock gas." the design distribution pressure of West-east Gas pipeline, capital, Shan line and two-wire system and Ji Ning interconnection gas pipeline reaches 10MPa, and wherein the design pressure of the second west to east gas pipeline project pipeline can reach 12MPa in China.After the high-pressure natural gas that high pressure pipe network is carried arrives the rock gas receiving gate station in each city, low first class pressure pipe network is entered after voltage regulating station step-down, wherein voltage regulating station requires to carry out step-down according to the supply gas pressure of downstream user, and domestic consumer (as gas user, public commercial family etc.) then can be supplied to use.
But, on the one hand, rock gas enters the process of low first class pressure pipe network from high pressure pipe network through step-down, huge pressure energy can be discharged, to process the natural valve station of 50 ten thousand steres day, when pressure is down to 0.4MPa from 4.0MPa, the pressure energy of release is about 3561KW, if do not utilized, the meeting build-up of pressure loss of energy; On the other hand, high-pressure natural gas because heat release can cause temperature to reduce, generally can be reduced to the scope of-20 DEG C to-60 DEG C in pressure reduction, and the temperature being supplied to the low pressure natural gas that user uses is generally 0-10 DEG C.Therefore how utilizing pressure energy and how to heat the cryogenic natural gas after high-pressure natural gas step-down is the problem that will solve at present.
Existing recovery natural gas pipe network pressure energy technology, generally utilize vortex tube to complete rock gas step-down pressure regulation process, the cold airflow produced after vortex tube step-down by high-pressure natural gas, hot air flow export respectively, cold airflow converges with hot air flow the firing chamber entering gas turbine group after being heated up by the heat absorbing counter-flow air and combustion turbine exhaustion in heat exchanger; The air of being lowered the temperature by heat exchanger imports the firing chamber of gas turbine group after entering the gas compressor raising pressure of gas turbine group, in a combustion chamber, rock gas and air mixed combustion, gas turbine is done work, drive wasted work equipment, exerting oneself and Economy of gas turbine can be improved, thus reach the object reclaiming natural gas pipe network pressure energy, but need to build gas turbine compression or electricity generating device in voltage regulating station.Also have and adopt rock gas Differential pressure power generation to produce electric energy and cold energy, for ice making, but ice-making capacity is difficult to too greatly consume.
The existing technology to the cryogenic natural gas heating after high-pressure natural gas step-down, is generally the cryogenic natural gas after adopting oven heating step-down, but there is following technological deficiency: because oven consumes rock gas in heating process, cause energy consumption high.Pressure energy of natural gas and cold energy are not used simultaneously.
Model utility content
The purpose of this utility model is to provide a kind of gas distributing system pressure regulation power generating refrigeration system, the differential pressure of rock gas is utilized to generate electricity, the cold energy that after reclaiming step-down, cryogenic natural gas produces simultaneously, produced electric energy and cold energy are all utilized, as cloud computing server that is very large for power consumption and needs cooling, decrease middle electrical network link, improve capacity usage ratio.
For reaching this object, the utility model by the following technical solutions: a kind of gas distributing system pressure regulation power generating refrigeration system, between natural gas high pressure pipe network and low first class pressure pipe network, described system comprises:
Decompressor, its suction port is connected to described high pressure pipe network;
The gear-box be connected with decompressor output terminal;
Driven the generator of generating by gear-box, generator powered consumes cool equipment in power consumption;
Heat-exchanger rig, one end is connected to the air outlet of decompressor, and the other end is connected to low first class pressure pipe network, and the refrigerant flowing through heat-exchanger rig carries out heat exchange with the rock gas through expander, refrigerant after heat exchange flows through cooling air unit, lowers the temperature to power consumption consumption cool equipment.
Preferably, described gear-box is connected with the arbor of decompressor.
Preferably, pressure maintaining valve is provided with between described high pressure pipe network and decompressor.
Preferably, described gear-box is also connected with lubricating oil station.
Preferably, assisted heating device is provided with between described heat-exchanger rig and described low first class pressure pipe network.
Preferably, described assisted heating device is electric heater or oven.
Preferably, also comprise pump, be arranged between heat-exchanger rig and cooling air unit.
Preferably, described heat-exchanger rig is heat exchanger; Described cooling air unit is pressurized air refrigerant heat exchanger.Based on above-mentioned gas distributing system pressure regulation power generating refrigeration system, the utility model is adopted and is carried out generating and cooling with the following method, and its step is as follows:
A. the expansion power generation of rock gas: the rock gas in described high pressure pipe network enters decompressor, and the impeller High Rotation Speed of decompressor is driven by the pressure difference at decompressor two ends, generate electricity via drive electrical generators after gearbox speed reduction, supply electrical power to power consumption consumption cool equipment;
B. the intensification of rock gas: the natural gas temperature after expander reduces, it carries out heat exchange by heat-exchanger rig and the refrigerant flowing through heat-exchanger rig, and the rock gas after intensification enters described low first class pressure pipe network;
C. the cold energy use of rock gas: the refrigerant after heat exchange enters cooling air unit, and cold energy converted to cold wind by cooling air unit and consume cool equipment to power consumption and lower the temperature, recycles in the refrigerant of cooling air unit is by transport pump to heat-exchanger rig.
Preferably, before the rock gas in described high pressure pipe network enters decompressor, first carry out voltage stabilizing by pressure maintaining valve;
The temperature of the rock gas after heat exchange, when not reaching low first class pressure pipe network input requirements, by the heated by natural gas after assisted heating device heat exchanging, assisted heating device is electric heater or oven;
Described cooling air unit is pressurized air refrigerant heat exchanger, and heat-exchanger rig is heat exchanger.
The beneficial effects of the utility model are: carry out step-down by decompressor to the rock gas entered by natural gas high pressure pipe network, rock gas can be made after step-down, to enter low first class pressure pipe network from high pressure pipe network, utilize the pressure difference before and after rock gas step-down to generate electricity simultaneously, rock gas can be reclaimed and entering the pressure energy discharged in the process of low first class pressure pipe network from high pressure pipe network through step-down; Generate electricity supply current consuming apparatus (as cloud computing server), decrease middle electrical network link, save investment; And also by carrying out the recovery of cold energy to the cryogenic natural gas after generating, the cold energy produced can be supplied to again consumption cool equipment (as cloud computing server), because refrigerant heat exchange improves natural gas temperature, and consumption electricity or heated by natural gas or need not be reduced, reduce energy consumption.
Accompanying drawing explanation
Fig. 1 is the structural representation of gas distributing system pressure regulation power generating refrigeration system of the present utility model.
In figure:
1, pressure maintaining valve; 2, decompressor; 3, gear-box; 4, generator; 5, heat-exchanger rig; 6, lubricating oil station; 7, pump; 8, cooling air unit; 9, power consumption consumption cool equipment; 10, assisted heating device; 11, high pressure pipe network; 12, low first class pressure pipe network; 13, other current consuming apparatus; 14, other consumption cool equipments;
Embodiment
The technical solution of the utility model is further illustrated by embodiment below in conjunction with accompanying drawing.
Mechanism's prediction after deliberation, cloud computing by the coming years with 26% annual growth increase fast, the development speed of this beyond tradition IT market growth rate 5 times has fully demonstrated the vigor that cloud industry is shone.Informationalized today, no matter be government, enterprises and individuals user, all trades and professions have all had an optimistic view of in cloud computing the endless potentiality of containing, the carrying out that informatized service process of taking as the leading factor with cloud computing is like a raging fire just in the world, but the powerful calculating ability of cloud computing behind, also inevitably creates the problem of high energy consumption.Within 2011, records center of China total power consumption reaches 70,000,000,000 kilowatt hours, has accounted for whole society's electricity consumption according to 1.5% of tune amount, is equivalent to the total electricity consumption of Tianjin whole year in 2011; 921 operational data center machine room, area about 880,000 square meter.Along with the quick growth of cloud computing, the five-year China will increase 7-10 doubly to data centralized traffic processing capability requirements, and machine room area needs to double the demand that could meet cloud computing development.The energy consumption data display of records center of CHINAUNICOM, the annual power consumption 9,900,000,000 in this center kilowatt hour.See with the usefulness of the current standard coal of China, need consumption 920,000 tons of standard coals that enough electric power just can be provided to supply the energy requirements of records center of CHINAUNICOM.Corresponding with CHINAUNICOM, records center of China Telecom year power consumption 11,200,000,000 kilowatt hour, amount to and need consume 102.95 ten thousand tons of standard coals year, a large amount of electric energy should be consumed in the server room of cloud computation data center, need cooling again, therefore combine with gas distributing system pressure regulation power generating refrigeration system, the dump energy at natural gas pressure regulating station can be made full use of, play the effect of energy-conserving and environment-protective.
Therefore, the utility model provides a kind of gas distributing system pressure regulation power generating refrigeration system, between natural gas high pressure pipe network 11 and low first class pressure pipe network 12, the pressure difference of the rock gas before can utilizing step-down and the rock gas after step-down generates electricity, cryogenic natural gas after step-down is heated up simultaneously, and by produced cold energy recycle, this system comprises:
Decompressor 2, its suction port is connected to the relief opening of natural gas high pressure pipe network 11, make the volumetric expansion of the rock gas of being discharged by natural gas high pressure pipe network 11 be able to step-down, the air pressure of the both sides rock gas of decompressor 2 is different simultaneously, and the pressure difference produced can make the impeller High Rotation Speed of decompressor 2;
Gear-box 3, is connected to output terminal i.e. the arbor of decompressor 2, realizes the deceleration of the High Rotation Speed to decompressor 2;
Generator 4, is connected with gear-box 3, and drives generating by gear-box 3, for providing electric power to power consumption consumption cool equipment 9;
Heat-exchanger rig 5, for the cryogenic natural gas after being expanded by decompressor 2 and refrigerant heat exchange, makes the natural gas temperature after heat exchange reach the requirement of low first class pressure pipe network 12 downstream user (as gas user, public commercial family etc.).Heat-exchanger rig 5 is connected to the air outlet of decompressor 2 by pipeline one end, the other end is connected to low first class pressure pipe network 12, the refrigerant flowing through heat-exchanger rig 5 carries out heat exchange with the rock gas expanded through decompressor 2, refrigerant after heat exchange flows through cooling air unit 8, cooling air unit 8 realizes extracting the cold energy of refrigerant and converting cold wind to, lowers the temperature to power consumption consumption cool equipment 9;
Pump 7 is provided with between heat-exchanger rig 5 and cooling air unit 8, for improving the refrigerant utilization ratio through cooling air unit 8, the refrigerant that temperature carry out heat exchange in heat-exchanger rig 5 after is lower is delivered in cooling air unit 8 under the effect of pump 7, heat exchange is carried out within it with air, cold energy is transferred to air, to the air cooling-down of power consumption consumption cool equipment 9 periphery, afterwards, refrigerant after intensification returns in heat-exchanger rig 5 and again heats cryogenic natural gas, forms recycling of refrigerant.
In the present embodiment, heat-exchanger rig 5 can select heat exchanger, and the place higher at ask for something can also use heat-exchange unit, to improve heat exchange efficiency;
Cooling air unit 8, it can be pressurized air refrigerant heat exchanger, the refrigerant that temperature carry out heat exchange in heat-exchanger rig 5 after is lower flows through pressurized air refrigerant heat exchanger, heat exchange is carried out with air in pressurized air refrigerant heat exchanger, the cold energy carried by refrigerant changes into cold air, to the air cooling-down of power consumption consumption cool equipment 9 periphery, the main air cooling-down to cloud computing server periphery in the present embodiment, refrigerant after intensification is returned in heat-exchanger rig 5 by pump 7 and heats the cryogenic natural gas expanded, form refrigerant circulation, to reach cold recoverable object.
Preferably, pressure maintaining valve 1 being set between natural gas high pressure pipe network 11 and decompressor 2, for carrying out voltage stabilizing to the rock gas entered by natural gas high pressure pipe network 11, entering decompressor 2 to make the rock gas after voltage stabilizing.
It should be noted that, in some cases, rock gas after heat-exchanger rig 5 heat exchange there will be the temperature requirement not reaching downstream user, preferably, an assisted heating device 10 is added after heat-exchanger rig 5, when not reaching temperature requirement, assisted heating device 10 can be started, assisted heating device 10 heats further to the rock gas after heat-exchanger rig 5 heating, thus reach the temperature required requirement of downstream user rock gas, in the utility model, assisted heating device 10 can be electric heater or oven, select according to different need for environments.
Preferably, a lubricating oil station 6 is arranged to gear-box 3, circulating lubricating oil can be provided to gear-box 3, improve the working life of gear-box 3, indirectly improve generating efficiency.
Below know-why of the present utility model is described in conjunction with specific embodiments, in the present embodiment, power consumption consumption cool equipment 9 refers to cloud computing server, but be not limited in cloud computing server, the utility model generating is except supply power consumer apparatus, and unnecessary electric energy outer can also be passed to other current consuming apparatus 13 or use by oneself; The cold energy that expansion power generation produces takes out except generation cold wind by refrigerant, and unnecessary cold energy also can supply other consumption cool equipments 14 in addition; And the utility model can also carry out providing of electric power and cold energy to other equipment targetedly simultaneously.
The utility model is applicable to carry out among the high-pressure natural gas pipe networks at different levels of step-down to high-pressure natural gas, such as, pressure is that after the natural gas via step pressure reducing in the high-pressure natural gas pipe network of 10MPa, pressure is respectively 4MPa, 1.6MPa, 0.4MPa and 2.5KPa, wherein pressure is 4MPa, 1.6MPa, the rock gas of 0.4MPa and 2.5KPa can be used for the user being given to corresponding region, therefore the utility model is applicable to pressure and is reduced to 4MPa from 10MPa, 1.6MPa is reduced between the gas distributing system of 0.4MPa, and pressure is reduced between the gas distributing system of 2.5KPa from 0.4MPa.
Be illustrated to be applicable to how to carry out gas distributing system pressure regulation generating to the utility model between pressure to be reduced to 4MPa gas distributing system from 10MPa below, its concrete steps are as follows:
A. the expansion power generation of rock gas: before referring to utilize step-down, after the rock gas of 10MPa and expansion step-down, the pressure difference of the rock gas of 4MPa is generated electricity by generator 4, and will obtain electric energy supply power consumption consumption cool equipment 9, and detailed process is as follows:
Pressure be 10MPa high pressure pipe network 11 in rock gas first by pressure maintaining valve 1 voltage stabilizing, enter decompressor 2 afterwards, now the air pressure at decompressor 2 two ends is different, the pressure difference produced can drive the impeller High Rotation Speed of decompressor 2, the maximum speed of this decompressor 2 can reach 45000RPM, then by the gear-box 3 be connected on decompressor 2 arbor by rotational speed decelerates to 1500RPM, generated electricity by gear-box 3 drive electrical generators 4 again, finally provide and electric power is supplied to power consumption consumption cool equipment 9 (i.e. cloud computing server), unnecessary electricity also can be passed to other current consuming apparatus 13 outward or use by oneself.
B. the intensification of rock gas: due to the pressure high-pressure natural gas that is 10MPa can absorb heat in the process of expansion step-down cause step-down after pressure be that the temperature of the rock gas of 4MPa can reduce, generally can be reduced to the scope of-20 DEG C to-60 DEG C, and be generally 0-20 DEG C by the temperature that low first class pressure pipe network 12 is supplied to the low pressure natural gas of user, therefore need to carry out hyperthermic treatment to low pressure natural gas, to meet the demand that user uses, its process is as follows:
Low pressure natural gas temperature after decompressor 2 expands reduces, and the rock gas after cooling carries out heat exchange by heat-exchanger rig device 5 and the refrigerant flowing through heat-exchanger rig 5, and temperature is increased to more than 0 DEG C, then enters the low first class pressure pipe network 12 that pressure is 4MPa;
It is to be noted, there will be at the rock gas after heat-exchanger rig 5 heating and do not reach the temperature required situation of downstream user, in this case, need to start assisted heating device 10, assisted heating device 10 heats further to the rock gas after heat-exchanger rig 5 heating, thus reach the temperature required requirement of rock gas, finally enter the low pressure natural gas pipe network 12 of 4MPa.
C. the cold energy use of rock gas: in the process that the cryogenic natural gas after expansion is heated up, a large amount of cold energy can be replaced by heat-exchanger rig 5, therefore can be used, power consumption consumption cool equipment 9 is lowered the temperature, or for the place that other need be lowered the temperature and freeze, its working procedure is as follows:
Refrigerant temperature after heat-exchanger rig 5 heat exchange is very low, refrigerant now enters cooling air unit 8 namely in pressurized air refrigerant heat exchanger, heat exchange is carried out therein with air, cold energy is transferred to the air of power consumption consumption cool equipment 9 (cloud computing server) periphery, power consumption consumption cool equipment 9 is lowered the temperature, and the refrigerant after cooling air unit 8 heats up to be delivered to again in heat-exchanger rig 5 by pump 7 and to recycle; Certainly too much cold energy also can be supplied in other consumption cool equipments 14 by refrigerant, and the refrigerant after other consumption cool equipment 14 cold energy of supply is circulated to heat-exchanger rig 5 by pump 7 equally, recycles.
Be the high-pressure natural gas of 10MPa for 5,000,000 sides/sky, pressure, after adopting the technical solution of the utility model, pressure is reduced to 4MPa, and can generate electricity about 4000kW simultaneously, and can freeze 8000kW simultaneously.Wherein produced electric energy supply power consumption consumption cool equipment 9 (cloud computing server), while saving large volume and electricity, also takes full advantage of the pressure energy in rock gas pressure reduction.
More than to be applicable to set forth the utility model between pressure to be reduced to 4MPa gas distributing system from 10MPa, but the utility model is not limited between the gas distributing system of this pressure stage, be equally applicable to 1.6MPa be reduced between the gas distributing system of 0.4MPa, and pressure is reduced between the gas distributing system of 2.5KPa from 0.4MPa.
The utility model carries out step-down by rock gas expansion power generation to the rock gas entered by natural gas high pressure pipe network 11, rock gas can be made after step-down, to enter low first class pressure pipe network 12 from high pressure pipe network 11, utilize the pressure difference before and after rock gas step-down to generate electricity simultaneously, rock gas can be reclaimed and entering the pressure energy discharged in the process of low first class pressure pipe network 12 from high pressure pipe network 11 through step-down; To be taken out in said process by heat-exchanger rig 5 with refrigerant simultaneously and produce cold energy, the cryogenic natural gas after step-down heats up, and does not thus need or reduces consumption rock gas, therefore, it is possible to reduce energy consumption in the heating process of cryogenic natural gas; Make use of the cold energy produced in decompression process simultaneously, save the energy.
Below know-why of the present utility model is described in conjunction with specific embodiments.These describe just in order to explain principle of the present utility model, and can not be interpreted as the restriction to the utility model protection domain by any way.Based on explanation herein, those skilled in the art does not need to pay performing creative labour can associate other embodiment of the present utility model, and these modes all will fall within protection domain of the present utility model.
Claims (8)
1. a gas distributing system pressure regulation power generating refrigeration system, be positioned between natural gas high pressure pipe network (11) and low first class pressure pipe network (12), it is characterized in that, described system comprises:
Decompressor (2), its suction port is connected to described high pressure pipe network (11);
The gear-box (3) be connected with decompressor (2) output terminal;
Driven the generator (4) of generating by gear-box (3), generator (4) is powered at power consumption consumption cool equipment (9);
Heat-exchanger rig (5), one end is connected to the air outlet of decompressor (2), the other end is connected to low first class pressure pipe network (12), the refrigerant flowing through heat-exchanger rig (5) carries out heat exchange with the rock gas expanded through decompressor (2), refrigerant after heat exchange flows through cooling air unit (8), lowers the temperature to power consumption consumption cool equipment (9).
2. gas distributing system pressure regulation power generating refrigeration system according to claim 1, is characterized in that, described gear-box (3) is connected with the arbor of decompressor (2).
3. gas distributing system pressure regulation power generating refrigeration system according to claim 2, is characterized in that, is provided with pressure maintaining valve (1) between described high pressure pipe network (11) and decompressor (2).
4. gas distributing system pressure regulation power generating refrigeration system according to claim 1, is characterized in that, described gear-box (3) is also connected with lubricating oil station (6).
5. gas distributing system pressure regulation power generating refrigeration system according to claim 1, is characterized in that, is provided with assisted heating device (10) after described heat-exchanger rig (5).
6. gas distributing system pressure regulation power generating refrigeration system according to claim 5, is characterized in that, described assisted heating device (10) is electric heater or oven.
7. gas distributing system pressure regulation power generating refrigeration system according to claim 1, is characterized in that, also comprises pump (7), is arranged between heat-exchanger rig (5) and cooling air unit (8).
8. gas distributing system pressure regulation power generating refrigeration system according to claim 7, is characterized in that, described heat-exchanger rig (5) is heat exchanger, and described cooling air unit (8) is pressurized air refrigerant heat exchanger.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265381A (en) * | 2014-09-19 | 2015-01-07 | 碧海舟（北京）石油化工设备有限公司 | Natural gas pipeline network variable-voltage generation and cooling system and method |
| CN105545394A (en) * | 2016-02-21 | 2016-05-04 | 北京中科瑞奥能源科技股份有限公司 | High-pressure liquid ammonia pressure energy recovery process and recovery system |
| CN107575744A (en) * | 2017-08-14 | 2018-01-12 | 新地能源工程技术有限公司 | Natural gas pressure regulating generating integration device and method |
| CN110118305A (en) * | 2019-06-05 | 2019-08-13 | 广东海洋大学 | A kind of natural gas pressure regulating station overbottom pressure utilization system |
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2014
- 2014-09-19 CN CN201420541735.0U patent/CN204186430U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265381A (en) * | 2014-09-19 | 2015-01-07 | 碧海舟（北京）石油化工设备有限公司 | Natural gas pipeline network variable-voltage generation and cooling system and method |
| CN105545394A (en) * | 2016-02-21 | 2016-05-04 | 北京中科瑞奥能源科技股份有限公司 | High-pressure liquid ammonia pressure energy recovery process and recovery system |
| CN107575744A (en) * | 2017-08-14 | 2018-01-12 | 新地能源工程技术有限公司 | Natural gas pressure regulating generating integration device and method |
| CN107575744B (en) * | 2017-08-14 | 2019-11-12 | 新地能源工程技术有限公司 | Natural gas pressure regulating generating integration device and method |
| CN110118305A (en) * | 2019-06-05 | 2019-08-13 | 广东海洋大学 | A kind of natural gas pressure regulating station overbottom pressure utilization system |
| CN110118305B (en) * | 2019-06-05 | 2024-02-09 | 广东海洋大学 | Residual pressure comprehensive utilization system of natural gas pressure regulating station |
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Owner name: BIHAIZHOU (BEIJING) ENERGY SAVING AND ENVIRONMENTA Free format text: FORMER NAME: BIHAIZHOU (BEIJING) PETROCHEMICAL EQUIPMENT CO., LTD. |
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Address after: 100029 Beijing city Chaoyang District Xiaoguan Beili 45 Jiayuan century No. 5 Building 7 layer Patentee after: Bi Haizhou (Beijing) energy saving environmental protection equipment Co., Ltd. Address before: 100029 Beijing city Chaoyang District Xiaoguan Beili 45 Jiayuan century No. 5 Building 7 layer Patentee before: Bihaizhou (Beijing) Petrochemical Equipment Co., Ltd. |