CN206458432U - Water injection oil replacing device - Google Patents
Water injection oil replacing device Download PDFInfo
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- CN206458432U CN206458432U CN201621349870.0U CN201621349870U CN206458432U CN 206458432 U CN206458432 U CN 206458432U CN 201621349870 U CN201621349870 U CN 201621349870U CN 206458432 U CN206458432 U CN 206458432U
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- oil
- storage
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- water
- storage tank
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 150
- 238000002347 injection Methods 0.000 title abstract description 13
- 239000007924 injection Substances 0.000 title abstract description 13
- 238000003860 storage Methods 0.000 claims abstract description 213
- 239000007788 liquid Substances 0.000 claims abstract description 44
- 239000003921 oil Substances 0.000 claims description 117
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 64
- 239000003345 natural gas Substances 0.000 claims description 33
- 239000007789 gas Substances 0.000 claims description 23
- 238000004519 manufacturing process Methods 0.000 claims description 18
- 239000010779 crude oil Substances 0.000 claims description 13
- 239000012530 fluid Substances 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000011084 recovery Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 206010020852 Hypertonia Diseases 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
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- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
Abstract
The utility model provides a water injection is oil device instead, include: the device comprises a storage tank, a first liquid pump, a second liquid pump, an oil storage port, an oil filling port, an oil storage port and a water filling port which are mutually connected through pipelines; the storage tanks are multiple, the inlet pipeline of each storage tank is converged on the oil storage pipeline and connected with the oil storage port, the outlet pipeline of each storage tank is converged on the oil filling pipeline and connected with the oil filling port, the inlet pipeline of each storage tank is converged on the water storage pipeline and connected with the water storage port, and the outlet pipeline of each storage tank is converged on the water injection pipeline and connected with the water injection port; the first liquid pump is arranged on the oil loading pipeline, and the water storage port is connected with the storage tank through the first liquid pump; the second liquid pump is arranged on the water injection pipeline. The utility model provides a water injection is oil device instead, when realizing oil storage, oil charging, can realize water storage, water injection, can effectual reduction running cost, improves economic benefits.
Description
Technical field
The utility model is related to oilfield surface engineering construction technique field, more particularly to oily device is replaced in a kind of water filling.
Background technology
Water filling replaces oily technique to be to improve a kind of effective means of fractured-cavernous carbonate reservoir recovery ratio.Wherein, water filling is replaced
Oil refers to that being artificially injected formation fluid (water) by same a bite oil well supplements stratum energy, while utilizing profit density contrast and gravity
Differentiation, makes injection water be replaced with formation oil, so as to realize that crude oil is driven to pit shaft and then produces ground by injection water
Purpose.
At present, when the water filling of pilot production individual well is for oil, water filling need in addition standby water tank concentrate water storage, then with pump by water from storage
The purpose that oil well realizes individual well water filling is pumped into water pot；, it is necessary to which standby oil storage tank concentrates oil storage in addition during oil recovery, and entrucking is transported to
Crude oil multi-purpose station.
Oily mode is replaced in existing this water filling, and oil storage, water storage are required for independent stand-by storage, and operating cost is higher, so that
Reduce economic benefit.
Utility model content
The utility model provides a kind of water filling and replaces oily device, for reducing operating cost, increases economic efficiency.
The utility model provides a kind of water filling and replaces oily device, including：Storage tank, the first liquid interconnected by pipeline
Pump, second liquid pump, oil storage mouthful, charge of oil mouthful, water storage mouthful and water filling port；
Storage tank is multiple, and the entrance pipe of each storage tank is pooled on oil storage pipeline to be connected with oil storage mouthful, each storage tank
Export pipeline is pooled on charge of oil pipeline to be connected with charge of oil mouthful, and the entrance pipe of each storage tank is pooled on water storage pipeline and water storage
Mouth connection, the export pipeline of each storage tank is pooled on water injecting pipeline to be connected with water filling port；First liquid pump is arranged on charge of oil pipe
Lu Shang, water storage mouthful is connected by the first liquid pump with storage tank；Second liquid pump is arranged on water injecting pipeline；
Valve, the storage between water storage mouthful and the first liquid pump are provided with the entrance pipe and export pipeline of each storage tank
Charge of oil pipe on water storage pipeline in water lines, between the first liquid pump and storage tank, between the entrance pipe of storage tank and charge of oil mouthful
Valve is provided with road；
Oil storage mouthful is used for from production tree to storage tank oil storage, and charge of oil mouthful is used to outwards convey crude oil from storage tank, and water storage mouthful is used for
To storage tank water storage, water filling port is used for from storage tank to production tree water filling.
In an embodiment of the present utility model, on the oil storage pipeline between oil storage mouthful and storage tank, second liquid pump and storage
Valve is provided with charge of oil pipeline on water injecting pipeline between tank, between water storage mouthful and storage tank.
In an embodiment of the present utility model, single current is provided with the charge of oil pipeline between the first liquid pump and water storage mouthful
Valve.
In an embodiment of the present utility model, device also includes：Separator, the oil inlet of separator passes through in-line
It is connected with production tree, the oil-out of separator is connected with oil storage mouthful, and valve is provided with in-line.
In an embodiment of the present utility model, blowoff valve is provided with separator.
In an embodiment of the present utility model, by-passing valve, in-line are provided between in-line and oil storage pipeline
On valve be arranged between by-passing valve and the oil inlet of separator.
In an embodiment of the present utility model, the first gas outlet of separator passes through natural gas metering device and natural gas
Processing unit is connected, and the second gas outlet of separator and the outlet pipe of natural gas metering device are connected, and the second of separator goes out
Going out between gas port and the outlet pipe of natural gas metering device, between the second gas outlet of separator and natural gas metering device
Valve is provided with air pipe.
In an embodiment of the present utility model, peace is provided between separator and the outlet pipe of natural gas metering device
Full valve.
In an embodiment of the present utility model, control valve is additionally provided between safety valve and separator.
Oily device is replaced in the water filling that the utility model embodiment is provided, storage tank be can with oil storage can also water storage, each storage tank can
Liquid is imported and exported by valve rotation, while oil storage, charge of oil is realized, water storage, water filling are realized, so as to effectively reduce
Operating cost, improves economic benefit；Meanwhile, it is effectively poor using oil-producing, water injection time, live fast water injection is met for oil
It is required that.
Brief description of the drawings
Fig. 1 replaces the structural representation of oily device embodiment one for the water filling that the utility model is provided；
Fig. 2 is the oil storage path in Fig. 1；
Fig. 3 is the charge of oil path in Fig. 1；
Fig. 4 is the water storage path in Fig. 1；
Fig. 5 is the water filling path in Fig. 1；
Fig. 6 replaces the structural representation of oily device embodiment two for the water filling that the utility model is provided.
Description of reference numerals：
1- storage tanks；
The liquid pumps of 2- first；
3- second liquid pumps；
4- oil storages mouthful；
5- charges of oil mouthful；
6- water storages mouthful；
7- water filling ports；
8- valves；
101- entrance pipes；
102- export pipelines；
901- oil storage pipelines；
902- charge of oil pipelines；
903- water storage pipelines；
904- water injecting pipelines；
905- in-lines；
906- outlet pipes；
10- production trees；
11- ball-and-seats；
12- separators；
121- oil inlets；
122- oil-outs；
The gas outlets of 123- first；
The gas outlets of 124- second；
13- blowoff valves；
14- by-passing valves；
15- natural gas metering devices；
16- natural gas treatment plants；
17- safety valves；
18- control valves.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that retouched
The embodiment stated is a part of embodiment of the utility model, rather than whole embodiments.Based on the implementation in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made is belonged to
The scope of the utility model protection.
Fig. 1 replaces the structural representation of oily device embodiment one for the water filling that the utility model is provided, as shown in figure 1, this reality
Applying the device of example offer includes：Storage tank 1, the first liquid pump 2, second liquid pump 3, oil storage mouthful 4, the dress interconnected by pipeline
Hydraulic fluid port 5, water storage mouth 6 and water filling port 7；Wherein, storage tank 1 is multiple, and the entrance pipe 101 of each storage tank 1 is pooled to oil storage pipeline
It is connected on 901 with oil storage mouthful 4, the export pipeline 102 of each storage tank 1 is pooled on charge of oil pipeline 902 to be connected with charge of oil mouthful 5, often
The entrance pipe 101 of individual storage tank 1 is pooled on water storage pipeline 903 to be connected with water storage mouthful 6, and the export pipeline 102 of each storage tank 1 converges
Collect on water injecting pipeline 904 and to be connected with water filling port 7；First liquid pump 2 is arranged on charge of oil pipeline 902, and water storage mouthful 6 passes through first
Liquid pump 2 is connected with storage tank 1；Second liquid pump 3 is arranged on water injecting pipeline 904；The entrance pipe 101 of each storage tank 1 and go out
Be provided with mouthful pipeline 102 on the water storage pipeline 903 between valve 8, the liquid pump 2 of water storage mouthful 6 and first, the first liquid pump 2
It is all provided with charge of oil pipeline 902 on water storage pipeline 903 between storage tank 1, between the entrance pipe 101 of storage tank 1 and charge of oil mouthfuls 5
It is equipped with valve 8；Oil storage mouthful 4 is used for from production tree 10 to the oil storage of storage tank 1, and charge of oil mouthful 5 is used for from the outside conveying crude oil of storage tank 1, storage
The mouth of a river 6 is used for the water storage of storage tank 1, and water filling port 7 is used for from storage tank 1 to the water filling of production tree 10.
It should be noted that seeing figure for convenience, the reference of a valve 8 is merely illustrated in figure, 8, other valves
Position is shown in figure, it is unnumbered.Follow-up identical valve 8 will also be not added with reference.
Specifically, storage tank 1 be able to can be arranged as required to for water storage or oil storage, the quantity of storage tank 1, it is with four in Fig. 1
It is illustrative exemplified by individual storage tank 1, it is not intended to limit the utility model.
First liquid pump 2 and second liquid pump 3 can be the devices such as single pump or pump truck.
In the present embodiment, on the oil storage pipeline 901 between oil storage mouthfuls 4 and storage tank 1, between second liquid pump 3 and storage tank 1
Valve 8 can be set on charge of oil pipeline 902 on water injecting pipeline 904, between water storage mouthfuls 6 and storage tank 1, to facilitate control.
In addition, ball-and-seat 11 can also be set on charge of oil pipeline 902 between the first liquid pump 2 and water storage mouthfuls 6, to prevent
Crude oil in charge of oil pipeline 902 flows back to storage tank 1, while also preventing the aqueous reflux in storage tank 1 from returning water storage mouthful 6.
Fig. 2 is the oil storage path in Fig. 1, and Fig. 3 is the charge of oil path in Fig. 1, and Fig. 4 is the water storage path in Fig. 1, and Fig. 5 is
Water filling path in Fig. 1.Oily device is replaced in oil storage, charge of oil, water storage, water filling the following detailed description of the water filling that the present embodiment is provided
Operation principle.
During oil storage, oil storage mouthful 4 is connected with the oil-out (not shown) of production tree 10, on the entrance pipe 101 for opening storage tank 1
Valve 8 and oil storage pipeline 901 on valve 8, make to connect (referring to Fig. 2) between production tree 10 and storage tank 1, from production tree 10
The crude oil of extraction enters storage tank 1 by oil storage pipeline 901, realizes oil storage.
During charge of oil, the filling device such as charge of oil mouthfuls 5 and charge of oil car is connected, the valve 8 on the export pipeline 102 of opening storage tank 1
And the valve 8 on charge of oil pipeline 902, make to connect (referring to Fig. 3) between storage tank 1 and charge of oil car, simultaneously close off water storage pipeline 903
On valve 8, block the path between storage tank 1 and water storage mouthfuls 6；The first liquid pump 2 is then turned on, leads to the crude oil in storage tank 1
Cross charge of oil pipeline 902 and be conveyed into charge of oil car, realize charge of oil.
During water storage, water storage mouthful 6 is connected with water sending device, opens valve 8 and water storage on the entrance pipe 101 of storage tank 1
Valve 8 on pipeline 903, makes storage tank 1 connect (referring to Fig. 4) with water sending device, simultaneously closes off the valve 8 on charge of oil pipeline 902,
Block the path between storage tank 1 and charge of oil mouthful 5；The first liquid pump 2 is then turned on, the water in water sending device is passed through water storage pipeline
903 enter storage tank 1, realize water storage.
During water filling, water filling port 7 is connected with the water inlet (not shown) of production tree 10, on the export pipeline 102 for opening storage tank 1
Valve 8 and water injecting pipeline 904 on valve 8, make to connect (referring to Fig. 5) between storage tank 1 and production tree 10, simultaneously close off dress
Valve 8 on oil pipe line 902, blocks the path between storage tank 1 and charge of oil mouthful 5；Second liquid pump 3 is then turned on, is made in storage tank 1
Water by water injecting pipeline 904 inject production tree 10, realize water filling.
It should be noted that in oil storage and water storage, can only open the valve on the entrance pipe 101 of a storage tank 1
8, the valve 8 on the entrance pipe 101 of multiple storage tanks 1 can also be opened simultaneously；Likewise, in charge of oil and water filling, can also
Only open on the valve 8 on the export pipeline 102 of a storage tank 1, the export pipeline 102 that multiple storage tanks 1 can also be opened simultaneously
Valve 8.And it is possible to after the completion of oil storage charge of oil, can also while oil storage charge of oil；Likewise, can be complete in water storage
, can also water filling while water storage into rear water filling.In addition, when the water storage pipeline 903 between the first liquid pump 2 and storage tank 1 goes out
During existing failure, the outlet of the valve 8 and storage tank 1 on the charge of oil pipeline 902 between water storage mouthful 6 and storage tank 1 can also be opened
Valve 8 on road 102, realizes water storage.
Oily device is replaced in the water filling that the present embodiment is provided, storage tank both can with oil storage can also water storage, each storage tank can pass through valve
Rotation imports and exports liquid, while oil storage, charge of oil is realized, realizes water storage, water filling, is run into so as to effectively reduce
This, improves economic benefit；Meanwhile, it is effectively poor using oil-producing, water injection time, live fast water injection is met for the requirement of oil.
Fig. 6 replaces the structural representation of oily device embodiment two for the water filling that the utility model is provided, and the present embodiment is to upper
State the further optimization supplement of embodiment illustrated in fig. 1.On the basis of above-mentioned embodiment illustrated in fig. 1, as shown in fig. 6, this implementation
The water filling that example is provided replaces oily device also to include：Separator 12, the oil inlet 121 of separator 12 passes through in-line 905 and oil recovery
Tree 10 is connected, and the oil-out 122 of separator 12 is connected with oil storage mouthful 4, and valve 8 is provided with in-line 905.
Specifically, separator 12 is gas-liquid separator.During oil exploitation, natural gas can be produced simultaneously, works as oil storage
When, the valve 8 on in-line 905 is opened, the oil inlet 121 of separator 12 connects with the oil-out of production tree 10, from adopting
The crude oil of the oily extraction of tree 10 first pass through separator 12 and carried out after gas-liquid separation, then enter storage by the oil-out 122 of separator 12
Tank 1, to obtain purer crude oil.
As an alternative embodiment, blowoff valve 13 can be set on separator 12, with drain separator 12
Dirt.
Optionally, the valve on by-passing valve 14, in-line 905 can be set between in-line 905 and oil storage pipeline 901
Door 8 is arranged between by-passing valve 14 and the oil inlet 121 of separator 12.When separator 12 breaks down, oil-feed can be closed
Valve 8 on pipeline 905 is overhauled to separator 12；By-passing valve 14 can be now opened, makes crude oil straight by by-passing valve 14
Tap into storage tank 1, realize synchronous oil storage.
As an alternative embodiment, the first gas outlet 123 of separator 12 by natural gas metering device 15 with
Natural gas treatment plant 16 is connected, and the second gas outlet 124 of separator 12 and the outlet pipe 906 of natural gas metering device 15 connect
Connect, between the second gas outlet 124 of separator 12 and outlet pipe 906, the second gas outlet 124 and the natural gas meter of separator 12
Valve 8 is provided with outlet pipe 906 between amount device 15.
Specifically, the valve 8 between the second gas outlet 124 of separator 12 and outlet pipe 906 is generally in closing shape
State, the natural gas that separator 12 is isolated enters back into day after can entering natural gas metering device 15 by the first gas outlet 123
Right Flash Gas Compression Skid System 16 is handled；When natural gas metering device 15 needs maintenance, can open separator 12 second goes out
Valve 8 between gas port 124 and outlet pipe 906, closes the second gas outlet 124 and the natural gas metering device 15 of separator 12
Between outlet pipe 906 on valve 8, the natural gas isolated is directly entered natural gas treatment plant 16.
Wherein, natural gas treatment plant 16 can be released flare or natural gas collection device, corresponding, separation
The natural gas that device 12 is isolated can be burnt by releasing flare, or be collected by natural gas collection device.My god
Right gas metering device 15 is used for counting the quantity for the natural gas that separator 12 is isolated, can when the natural gas isolated is less
To be burnt by releasing flare；When the natural gas isolated is more, it can be collected by natural gas collection device.
Optionally, safety valve 17 can be set between the outlet pipe 906 of separator 12 and natural gas metering device 15, with
When pressure in separator in the case of accident 12 is raised suddenly, the discharge of the gas in separator 12 can be reduced separator
Pressure in 12, it is to avoid hypertonia in separator 12 and damage water filling and replace oily device.
Further, control valve 18 is additionally provided between safety valve 17 and separator 12, the control valve 18 can be manual
Ball valve etc.；When safety valve 17 needs maintenance, the control valve 18 can be closed with isolation safe valve 17 and separator 12, to safety
Valve 17 is overhauled.
Oily device is replaced in the water filling that the present embodiment is provided, and the crude oil produced from production tree enters back into storage tank after separator,
Purer crude oil can be got；Safety valve, Ke Yiyou are set between separator and the outlet pipe of natural gas metering device
The maximum pressure of oily device is replaced in the whole water filling of limitation of effect, improves equipment safety.
Finally it should be noted that：Various embodiments above is only limited to illustrate the technical solution of the utility model, rather than to it
System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, or to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type.
Claims (9)
1. oily device is replaced in a kind of water filling, it is characterised in that including：The storage tank that is interconnected by pipeline, the first liquid pump, second
Liquid pump, oil storage mouthful, charge of oil mouthful, water storage mouthful and water filling port；
The storage tank is multiple, and the entrance pipe of each storage tank is pooled on oil storage pipeline to be connected with the oil storage mouthful, often
The export pipeline of the individual storage tank is pooled on charge of oil pipeline to be connected with the charge of oil mouthful, and the entrance pipe of each storage tank converges
Collect on water storage pipeline and mouthful be connected with the water storage, each the export pipeline of the storage tank is pooled on water injecting pipeline and the note
The mouth of a river is connected；First liquid pump is arranged on the charge of oil pipeline, and the water storage mouthful passes through first liquid pump and institute
State storage tank connection；The second liquid pump is arranged on the water injecting pipeline；
Valve, the water storage mouthful and first liquid pump are provided with the entrance pipe and export pipeline of each storage tank
Between water storage pipeline on, on the water storage pipeline between first liquid pump and the storage tank, the entrance pipe of the storage tank
Valve is provided with charge of oil pipeline between the charge of oil mouthful；
The oil storage mouthful is used for from production tree to the storage tank oil storage, and the charge of oil mouthful is used to outwards convey crude oil from storage tank, institute
Stating water storage mouthful is used for the storage tank water storage, and the water filling port is used for from the storage tank to the production tree water filling.
2. oily device is replaced in water filling according to claim 1, it is characterised in that the storage between the oil storage mouthful and the storage tank
On water injecting pipeline on oil pipe line, between the second liquid pump and the storage tank, between the water storage mouthful and the storage tank
Valve is provided with charge of oil pipeline.
3. oily device is replaced in water filling according to claim 1, it is characterised in that first liquid pump and the water storage mouth
Between charge of oil pipeline on be provided with ball-and-seat.
4. oily device is replaced in the water filling according to claim any one of 1-3, it is characterised in that described device also includes：Separation
Device, the oil inlet of the separator is connected by in-line with the production tree, the oil-out of the separator and the storage
Hydraulic fluid port is connected, and valve is provided with the in-line.
5. oily device is replaced in water filling according to claim 4, it is characterised in that be provided with blowoff valve on the separator.
6. oily device is replaced in water filling according to claim 4, it is characterised in that the in-line and the oil storage pipeline it
Between the valve that is provided with by-passing valve, the in-line be arranged between the oil inlet of the by-passing valve and the separator.
7. oily device is replaced in water filling according to claim 4, it is characterised in that the first gas outlet of the separator passes through day
Right gas metering device is connected with natural gas treatment plant, the second gas outlet and the natural gas metering device of the separator
Outlet pipe connection, between the second gas outlet of the separator and the outlet pipe of natural gas metering device, described separate
Valve is provided with outlet pipe between second gas outlet of device and natural gas metering device.
8. oily device is replaced in water filling according to claim 7, it is characterised in that the separator is filled with the gas metering
Safety valve is provided between the outlet pipe put.
9. oily device is replaced in water filling according to claim 8, it is characterised in that between the safety valve and the separator also
It is provided with control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621349870.0U CN206458432U (en) | 2016-12-09 | 2016-12-09 | Water injection oil replacing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621349870.0U CN206458432U (en) | 2016-12-09 | 2016-12-09 | Water injection oil replacing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206458432U true CN206458432U (en) | 2017-09-01 |
Family
ID=59692656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621349870.0U Active CN206458432U (en) | 2016-12-09 | 2016-12-09 | Water injection oil replacing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206458432U (en) |
-
2016
- 2016-12-09 CN CN201621349870.0U patent/CN206458432U/en active Active
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