CN206694337U - Energy-storage system - Google Patents
Energy-storage system Download PDFInfo
- Publication number
- CN206694337U CN206694337U CN201720314981.6U CN201720314981U CN206694337U CN 206694337 U CN206694337 U CN 206694337U CN 201720314981 U CN201720314981 U CN 201720314981U CN 206694337 U CN206694337 U CN 206694337U
- Authority
- CN
- China
- Prior art keywords
- accumulator
- energy
- storage system
- fluid pipeline
- cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000004146 energy storage Methods 0.000 title claims abstract description 48
- 239000012530 fluid Substances 0.000 claims abstract description 65
- 239000007788 liquid Substances 0.000 claims description 10
- 230000007306 turnover Effects 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 38
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 31
- 229910052757 nitrogen Inorganic materials 0.000 description 16
- 238000010276 construction Methods 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 3
- 239000013589 supplement Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 206010044565 Tremor Diseases 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model provides a kind of energy-storage system, including：Prying body；Accumulator, accumulator are arranged on prying body, and accumulator has cavity；Gas piping, gas piping are arranged on prying body, and one end of gas piping is connected with cavity to be passed through compressed gas into cavity；Fluid pipeline, fluid pipeline are arranged on prying body, and the first end of fluid pipeline connects with cavity, and the second end of fluid pipeline is as the interface end with external system.The utility model solves the problems, such as the poor practicability of accumulator of the prior art and property difference easy to use.
Description
Technical field
Accumulator technical field is the utility model is related to, in particular to a kind of energy-storage system.
Background technology
Compressor assembly, may be unexpected because of the oil pressure shakiness in oil circuit or motor during normal operation work
It is stopped and causes compressor out of service, so as to reduce the continuous service ability of compressor assembly, have impact on industrial life
The security and economy of production.
Accumulator, in an emergency situation being capable of make up compressor system as a kind of auxiliary oil sources to compressor assembly fuel feeding
Fluid in the oil circuit of system, so as to improve the continuous service ability of compressor assembly, it ensure that the stability of compression operation work.
But existing accumulator is generally fixedly mounted in compressor assembly in the form of single device, it is not easy to pair
Accumulator is transported and is quickly installed to the fluid supplement carried out in other compressor assemblies under emergency, therefore, existing
Accumulator practicality it is poor；In addition, operating personnel are also needed to after accumulator installation installs accumulator normal use institute
The pipeline and valve instrument needed, so as to cause the property easy to use of existing accumulator poor.
Utility model content
Main purpose of the present utility model is to provide a kind of energy-storage system, to solve the reality of accumulator of the prior art
With property is poor and the problem of property difference easy to use.
The utility model provides a kind of energy-storage system to achieve these goals, including：Prying body；Accumulator, accumulator
It is arranged on prying body, accumulator has cavity；Gas piping, gas piping are arranged on prying body, and one end of gas piping with
Cavity is connected to be passed through compressed gas into cavity；Fluid pipeline, fluid pipeline are arranged on prying body, and the first of fluid pipeline
End connects with cavity, and the second end of fluid pipeline is as the interface end with external system.
Further, prying body includes base, and accumulator, gas piping and fluid pipeline are removably disposed in base
On.
Further, prying body also includes cover body, and cover body is located on base, and cover body surrounds installation sky jointly with base
Between, accumulator, gas piping and fluid pipeline are arranged in installing space.
Further, the junction of gas piping and accumulator is located at the top of accumulator, fluid pipeline and accumulator
Junction is located at the bottom of accumulator.
Further, energy-storage system also includes first pressure table, the first stop valve, the first check valve and the second stop valve,
First pressure table, the first stop valve, the first check valve and the second stop valve are successively set on gas along the direction away from accumulator
On pipeline.
Further, energy-storage system also includes the second check valve, second pressure gauge, the first gate valve and the second gate valve, and second
Check valve, second pressure gauge, the first gate valve and the second gate valve are successively set on fluid pipeline along the direction away from accumulator.
Further, energy-storage system also includes exhaust-valve, and at least one row is provided with gas piping and fluid pipeline
Empty valve.
Further, energy-storage system also includes level gauging structure, and level gauging structure setting is on accumulator with detection
Height of oil in cavity.
Further, level gauging structure is magnetic double level gauge, the both ends of magnetic double level gauge respectively with accumulator
Top connects with bottom.
Using the technical solution of the utility model, by setting accumulator, gas piping and fluid pipeline on prying body, store
Energy utensil has cavity, and one end of gas piping is connected with cavity to be passed through compressed gas, the first end of fluid pipeline into cavity
Connected with cavity, the second end of fluid pipeline is as the interface end with external system.So, accumulator, gas piping and fluid
Pipeline is integrated on prying body, energy-storage system is formed mechanical type skid accumulator, just can be easily by the carrying to prying body
Mobile storage system, and only need to dock interface end with external system and just easily can connect energy-storage system and external system
Connect and provide fluid for external system, improve the practicality of energy-storage system and property easy to use.
Brief description of the drawings
The Figure of description for forming the part of the application is used for providing further understanding to of the present utility model, this practicality
New schematic description and description is used to explain the utility model, does not form to improper restriction of the present utility model.
In the accompanying drawings：
Fig. 1 shows the energy-storage system structural representation according to a kind of alternative embodiment of the present utility model.
Wherein, above-mentioned accompanying drawing marks including the following drawings：
10th, prying body；11st, base；12nd, cover body；20th, accumulator；30th, gas piping；40th, fluid pipeline；41st, interface end；
50th, first pressure table；60th, the first stop valve；70th, the first check valve；80th, the second stop valve；90th, the second check valve；100th,
Two pressure gauges；110th, the first gate valve；120th, the second gate valve；130th, exhaust-valve；140th, level gauging structure.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.The description only actually at least one exemplary embodiment is illustrative to be never used as to this practicality below
New and its application or any restrictions used.Based on the embodiment in the utility model, those of ordinary skill in the art are not having
There is the every other embodiment made and obtained under the premise of creative work, belong to the scope of the utility model protection.
It should be noted that term used herein above is merely to description specific implementation
Mode, and it is not intended to illustrative embodiments of the restricted root according to the application.As used herein, unless up and down
Text explicitly points out in addition, and otherwise singulative is also intended to include plural form, additionally, it should be understood that, when in this explanation
When term "comprising" and/or " comprising " are used in book, its indicate existing characteristics, step, operation, device, component and/or they
Combination.
Unless specifically stated otherwise, the part and positioned opposite, the digital table of step otherwise illustrated in these embodiments
Up to the unlimited the scope of the utility model processed of formula and numerical value.Simultaneously, it should be appreciated that each shown in accompanying drawing for the ease of description
The size of individual part is not to be drawn according to the proportionate relationship of reality.For skill known to person of ordinary skill in the relevant
Art, method and apparatus may be not discussed in detail, but in the appropriate case, the technology, method and apparatus should be considered as awarding
Weigh part for specification.In shown here and discussion all examples, any occurrence should be construed as merely example
Property, not as limitation.Therefore, the other examples of exemplary embodiment can have different values.It should be noted that：It is similar
Label and letter similar terms is represented in following accompanying drawing, therefore, once be defined in a certain Xiang Yi accompanying drawing, then with
It need not be further discussed in accompanying drawing afterwards.
In description of the present utility model, it is to be understood that the noun of locality such as " forward and backward, upper and lower, left and right ", " horizontal,
Vertically, vertically, it is horizontal " and " pushing up, bottom " etc. indicated by orientation or position relationship be normally based on orientation or position shown in the drawings
Relation is put, description the utility model is for only for ease of and simplifies description, in the case where not making opposite explanation, these nouns of locality
Do not indicate that and imply that the device of meaning or element there must be specific orientation or with specific azimuth configuration and operation, because
This is it is not intended that limitation to scope of protection of the utility model；The noun of locality " inside and outside " refers to the wheel relative to each part in itself
Wide is inside and outside.
For the ease of description, space relative terms can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be appreciated that space relative terms are intended to comprising the orientation except device described in figure
Outside different azimuth in use or operation.For example, if the device in accompanying drawing is squeezed, it is described as " in other devices
It will be positioned as " under other devices or construction after the device of part or construction top " or " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " can include " ... top " and
" in ... lower section " two kinds of orientation.The device can also other different modes positioning (being rotated by 90 ° or in other orientation), and
And respective explanations are made to the relative description in space used herein above.
Furthermore, it is necessary to explanation, limits parts, it is only for be easy to using the word such as " first ", " second "
Corresponding parts to be distinguished, do not have Stated otherwise such as, above-mentioned word does not have particular meaning, therefore it is not intended that to this
The limitation of utility model protection scope.
In order to solve the problems, such as the poor practicability of accumulator of the prior art and property difference easy to use, the utility model carries
A kind of energy-storage system is supplied, energy-storage system provided by the utility model also has easy for installation, simple in construction, compact, occupancy sky
Between small, the characteristics of being easy to repair and maintenance.
As shown in figure 1, energy-storage system includes prying body 10, accumulator 20, gas piping 30 and fluid pipeline 40, accumulator 20
Be arranged on prying body 10, accumulator 20 has cavity, and gas piping 30 is arranged on prying body 10, and one end of gas piping 30 with
Cavity is connected to be passed through compressed gas into cavity, and fluid pipeline 40 is arranged on prying body 10, and the first end of fluid pipeline 40
Connected with cavity, the second end of fluid pipeline 40 is as the interface end 41 with external system.
By setting accumulator 20, gas piping 30 and fluid pipeline 40, accumulator 20 that there is cavity, gas on prying body 10
One end of body pipeline 30 is connected with cavity to be passed through compressed gas into cavity, and the first end of fluid pipeline 40 connects with cavity,
Second end of fluid pipeline 40 is as the interface end 41 with external system.So, accumulator 20, gas piping 30 and fluid pipeline
40 are integrated on prying body 10, energy-storage system is formed mechanical type skid accumulator, just can be facilitated by the carrying to prying body 10
Ground mobile storage system, and only need to dock interface end 41 with external system and just can be with outside by energy-storage system easily
System connects and provides fluid for external system, improves the practicality of energy-storage system and property easy to use.
It should be noted that when the energy-storage system of the application is as auxiliary oil sources, energy-storage system can be according to external system
The gas piping 30 and fluid pipeline 40 of different length and caliber are changed to the fluid amount suitability needed, can be similarly adapted to
Change the accumulator 20 with different storage capacitys to property.
Alternatively, interface end 41 is ring flange.
Preferably, it is nitrogen from the compressed gas that gas piping 30 is passed through into the cavity of accumulator 20.
For the ease of installation accumulator 20, gas piping 30 and fluid pipeline 40, alternatively, prying body 10 includes base 11,
Accumulator 20, gas piping 30 and fluid pipeline 40 are removably disposed on base 11.
In order to improve protection of the energy-storage system to accumulator 20, gas piping 30, fluid pipeline 40 and other components
Performance, avoid energy-storage system in transportation each part by colliding with or each part is invaded by rainwater, dust storm at work
Deteriorate bad；Alternatively, prying body 10 also includes cover body 12, and cover body 12 is located on base 11, and cover body 12 encloses jointly with base 11
Into installing space, accumulator 20, gas piping 30 and fluid pipeline 40 are arranged in installing space.
Alternatively, the junction of gas piping 30 and accumulator 20 is located at the top of accumulator 20, and fluid pipeline 40 is with storing
The junction of energy device 20 is located at the bottom of accumulator 20.So, just can be led to by gas piping 30 from the top of accumulator 20
Enter nitrogen, and fluid is passed in and out the cavity of accumulator 20 by fluid pipeline 40 by the bottom of accumulator 20, so as to ensure that accumulation of energy
Device 20 stably stores or discharged fluid, and providing accumulation of energy for external system ensures.
As shown in figure 1, energy-storage system also includes first pressure table 50, the first stop valve 60, the first check valve 70 and second
Stop valve 80, first pressure table 50, the first stop valve 60, the first check valve 70 and the second stop valve 80 are along away from accumulator 20
Direction is successively set on gas piping 30.This way it is ensured that the controllable of nitrogen operation is passed through into the cavity of accumulator 20
Performance.
As shown in figure 1, energy-storage system also includes the second check valve 90, second pressure gauge 100, the first gate valve 110 and second
Gate valve 120, the side of the second check valve 90, second pressure gauge 100, the first gate valve 110 and the second gate valve 120 along remote accumulator 20
To being successively set on fluid pipeline 40.In such manner, it is possible to effectively to the fluid in the cavity of accumulator 20 enter to have troubles into
Row manipulation, improve the job stability of energy-storage system.
As shown in figure 1, for the ease of being emptied in the cavity to accumulator 20, in gas piping 30 and fluid pipeline 40
Operation, while it is easy to the fluid in the cavity into and out accumulator 20 to be sampled, energy-storage system also includes exhaust-valve
130, at least one exhaust-valve 130 is provided with gas piping 30 and fluid pipeline 40.
As shown in figure 1, in order to monitor the liquid level of the fluid in the cavity of accumulator 20 in real time, energy-storage system also includes
Level gauging structure 140, level gauging structure 140 are arranged on accumulator 20 with the Height of oil in test chamber.
Alternatively, level gauging structure 140 is magnetic double level gauge, the both ends of magnetic double level gauge respectively with accumulator 20
Top connected with bottom.
It should be noted that one end of the remote accumulator 20 of gas piping 30 connects with compressed air source unit, wherein, source of the gas dress
It is set to the external equipment of energy-storage system.So, just nitrogen stably, constantly can be provided for accumulator 20 by compressed air source unit
Gas, so as to efficiently control the pressure in the cavity of accumulator 20, and then the reliably fluid in the cavity of regulation accumulator 20
Amount.
Alternatively, compressed air source unit is arranged on the base 11 of prying body 10.
Each course of work of one energy-storage system of brief description：
1, nitrogen Plenum Process is passed through into accumulator 20
The second stop valve 80 and the first stop valve 60 are opened successively, by being mounted with the compressed air source unit of nitrogen to accumulator 20
Cavity in inflate, until accumulator 20 cavity in pressure reach predetermined value after, stop filling into the cavity of accumulator 20
Gas.
2nd, the process of fluid is passed through into accumulator 20
The second gate valve 120 and the first gate valve 110 are opened successively, and fluid is filled with into the cavity of accumulator 20.Accumulator 20
Cavity in liquid level be gradually increasing, nitrogen is compressed in cavity, and nitrogen volume diminishes, and pressure becomes larger, record magnetic turnover panel liquid
During the different scales of instruction of position meter, the indicated value of corresponding first pressure table 50, with after facilitating energy-storage system to run (more than accumulator 20
It is secondary drain the oil with it is oil-filled after) nitrogen the blowing pressure is appraised and decided；The oil-feed in the cavity of accumulator 20 slows afterwards, on liquid level
Liter is also very slow, when first pressure table 50 and filter rear line pressure are close, reach pressure balance fuel feeding and is automatically stopped.Accumulation of energy
After the completion of the oil-filled operation of device 20, the indicated value of magnetic double level gauge, and the indicated value of first pressure table 50 are recorded.
It should be noted that when switching external system and needing energy-storage system to carry out fluid supplement, accumulator 20 is to outside
After system supplement fluid, nitrogen volumetric expansion in the cavity of accumulator 20, pressure declines, and now oil pump has turned on, outside system
Unite cavity internal pressure of the oil pressure (risings) more than accumulator 20, such energy-storage system except in addition to external system fuel feeding, while
Ensure the cavity oil-feed of accumulator 20.
It should also be noted that, the oil pressure and nitrogen pressure in the cavity of accumulator 20 are a poised states, work as accumulation of energy
When nitrogen pressure in the cavity of device 20 raises, fluid liquid level can decline, conversely, when the nitrogen pressure in the cavity of accumulator 20
During reduction, fluid liquid level can raise, and therefore, can adjust the pressure for being passed through nitrogen according to the height of actual fluid liquid level, this
Outside, when being reduced when energy-storage system leakage causes nitrogen pressure, causing fluid liquid level to rise, can be supplemented into the cavity of accumulator 20
Nitrogen makes the fluid liquid level in the cavity of accumulator 20 keep stable to improve the pressure in the cavity of accumulator 20.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, work, device, component and/or combinations thereof.
It should be noted that term " first " in the description and claims of this application and above-mentioned accompanying drawing, "
Two " etc. be for distinguishing similar object, without for describing specific order or precedence.It should be appreciated that so use
Data can exchange in the appropriate case, so that presently filed embodiment described herein can be with except illustrating herein
Or the order beyond those of description is implemented.
Preferred embodiment of the present utility model is the foregoing is only, is not limited to the utility model, for this
For the technical staff in field, the utility model can have various modifications and variations.It is all in the spirit and principles of the utility model
Within, any modification, equivalent substitution and improvements made etc., it should be included within the scope of protection of the utility model.
Claims (9)
- A kind of 1. energy-storage system, it is characterised in that including：Prying body (10)；Accumulator (20), the accumulator (20) are arranged on the prying body (10), and the accumulator (20) has cavity；Gas piping (30), the gas piping (30) is arranged on the prying body (10), and the one of the gas piping (30) End is connected with the cavity to be passed through compressed gas into the cavity；Fluid pipeline (40), the fluid pipeline (40) are arranged on the prying body (10), and the of the fluid pipeline (40) One end connects with the cavity, and the second end of the fluid pipeline (40) is as the interface end (41) with external system.
- 2. energy-storage system according to claim 1, it is characterised in that the prying body (10) includes base (11), the storage Energy device (20), the gas piping (30) and the fluid pipeline (40) are removably disposed on the base (11).
- 3. energy-storage system according to claim 2, it is characterised in that the prying body (10) also includes cover body (12), described Cover body (12) is located on the base (11), and the cover body (12) surrounds installing space jointly with the base (11), institute Accumulator (20), the gas piping (30) and the fluid pipeline (40) is stated to be arranged in the installing space.
- 4. energy-storage system according to claim 1, it is characterised in that the gas piping (30) and the accumulator (20) Junction be located at the top of the accumulator (20), the fluid pipeline (40) and the junction of the accumulator (20) are located at The bottom of the accumulator (20).
- 5. energy-storage system according to claim 1, it is characterised in that the energy-storage system also includes first pressure table (50), the first stop valve (60), the first check valve (70) and the second stop valve (80), the first pressure table (50), described The direction of one stop valve (60), first check valve (70) and second stop valve (80) along the remote accumulator (20) It is successively set on the gas piping (30).
- 6. energy-storage system according to claim 1, it is characterised in that the energy-storage system also includes the second check valve (90), second pressure gauge (100), the first gate valve (110) and the second gate valve (120), second check valve (90), described second Pressure gauge (100), first gate valve (110) and second gate valve (120) along away from the accumulator (20) direction according to It is secondary to be arranged on the fluid pipeline (40).
- 7. energy-storage system according to claim 1, it is characterised in that the energy-storage system also includes exhaust-valve (130), institute State and at least one exhaust-valve (130) is provided with gas piping (30) and the fluid pipeline (40).
- 8. energy-storage system according to claim 1, it is characterised in that the energy-storage system also includes level gauging structure (140), the level gauging structure (140) is arranged on the accumulator (20) to detect the Height of oil in the cavity.
- 9. energy-storage system according to claim 8, it is characterised in that the level gauging structure (140) is magnetic turnover panel liquid Position meter, the both ends of the magnetic double level gauge connect with the top of the accumulator (20) and bottom respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720314981.6U CN206694337U (en) | 2017-03-28 | 2017-03-28 | Energy-storage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720314981.6U CN206694337U (en) | 2017-03-28 | 2017-03-28 | Energy-storage system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206694337U true CN206694337U (en) | 2017-12-01 |
Family
ID=60440466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720314981.6U Active CN206694337U (en) | 2017-03-28 | 2017-03-28 | Energy-storage system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206694337U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109237281A (en) * | 2017-07-10 | 2019-01-18 | 中国石油天然气股份有限公司 | Compressor energy-storage system |
-
2017
- 2017-03-28 CN CN201720314981.6U patent/CN206694337U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109237281A (en) * | 2017-07-10 | 2019-01-18 | 中国石油天然气股份有限公司 | Compressor energy-storage system |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210323 Address after: 100007 Oil Mansion, 9 North Avenue, Dongcheng District, Beijing, Dongzhimen Patentee after: PetroChina Company Limited Patentee after: Daqing Petrochemical Machinery Factory Co.,Ltd. Address before: 100007 Oil Mansion, 9 North Avenue, Dongcheng District, Beijing, Dongzhimen Patentee before: PetroChina Company Limited |