CN208222055U - A kind of liquid carbon dioxide storage tank - Google Patents
A kind of liquid carbon dioxide storage tank Download PDFInfo
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- CN208222055U CN208222055U CN201820449988.3U CN201820449988U CN208222055U CN 208222055 U CN208222055 U CN 208222055U CN 201820449988 U CN201820449988 U CN 201820449988U CN 208222055 U CN208222055 U CN 208222055U
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- pipeline
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- carbon dioxide
- tank
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Abstract
The utility model provides a kind of liquid carbon dioxide storage tank, including tank body, the top of the tank is provided with nitrogen supercharging pipeline, gas phase pipeline, gas phase emission pipeline, liquidometer upper pipeline, and the tank base is provided with outlet tube road, charging line, blowoff line, liquidometer lower pipeline；It is connected between the gas phase pipeline and outlet tube road by gas-liquid communicating valve；The liquid carbon dioxide storage tank can be used for the storage of liquid carbon dioxide in liquid carbon dioxide pressure break, belong to packaged type skid equipment, have space occupied small compared with traditional carbon dioxide tank vehicle, conducive to the canonical layout of construction equipment at the scene, cooperate nitrogen supercharging in use, liquid discharge capacity is big out, it can carry out long-distance centralized control, several carbon dioxide storage tanks can be controlled simultaneously goes out liquid speed degree, declines the liquid level equilibrium of every storage tank, liquid carbon dioxide can be fully used.
Description
Technical field
The utility model belongs to oil-gas field development technical field, is transformed for oil/gas well formation breakdown, and in particular to a kind of
Liquid carbon dioxide storage tank.
Background technique
Liquid carbon dioxide pressure break (such as carbon dioxide energization, carbon dioxide dry method adds sand) belongs to a kind of emerging ground lamination
Technology is split, has the advantages that small to formation damage, discharge speed is fast, correctional effect is good, gradually promotes and applies at the scene.
The storage facilities of liquid carbon dioxide is common carbon dioxide tank vehicle in previous liquid carbon dioxide pressure break, due to
Carbon dioxide tank vehicle majority is food-grade carbon-dioxide tank car, aims at the supply of the productions such as beer, cola company, organizes a liquid
Carbon dioxide pressure break, which is constructed, needs to employ the carbon dioxide tank vehicle in multiple provinces, and the time of not only escorting goods on a train, truck, etc. is long, affects food company
Normal production, be also possible to cause carbon dioxide tank vehicle the pollution of other media in work progress, carbon dioxide tank vehicle goes back to factory
After need to be cleaned, and then make liquid carbon dioxide pressing crack construction increased costs；Furthermore it is constructed using carbon dioxide tank vehicle
When, the liquid level of each carbon dioxide tank vehicle is difficult to control, and the small carbon dioxide tank vehicle liquid level of liquid resistance shifts to an earlier date near zero out, up to not
To each carbon dioxide tank vehicle liquid level Balance route, the significant wastage of liquid carbon dioxide is caused, if forming " evacuation ", even
It may cause fracturing unit truck and walk sky and pump to terminate in advance construction；Moreover carbon dioxide tank vehicle outlet tube line latus rectum is smaller, generally exists
DN40 or so is applied in liquid carbon dioxide pressing crack construction, and detail design requirement is not achieved in operational discharge capacity, is affected pressure break and is changed
Effect is made, or even because of operational discharge capacity deficiency, the reduction of liquid carbon dioxide solid-carrying performance makes shaft bottom sand plug, causes down-hole accident, sternly
The process of the popularization of liquid carbon dioxide pressure break is constrained again.
Utility model content
In order to overcome the shortcomings of the prior art, the utility model provides a kind of liquid carbon dioxide storage tank, with solution
Certainly carbon dioxide is escorted goods on a train, truck, etc., and the time is long, the unbalanced fracturing unit truck that forms " evacuation " and may cause of liquid level decline walks empty pump, operational discharge capacity
The series of problems such as deficiency, to achieve the purpose that reduce cost, improve discharge capacity, improve pressing crack construction effect.
Technical solution used by the utility model is as follows:
A kind of liquid carbon dioxide storage tank, including tank body, the top of the tank are provided with nitrogen supercharging pipeline, gas phase pipe
Road, gas phase emission pipeline, liquidometer upper pipeline, the tank base are provided with outlet tube road, charging line, blowoff line, liquid
Position meter lower pipeline；It is connected between the gas phase pipeline and outlet tube road by gas-liquid communicating valve.
Further, nitrogen supercharging hand-operated valve, pipe are disposed on the nitrogen supercharging pipeline outward from top of the tank
Road safety valve I, nitrogen supercharging motor-driven valve, nitrogen supercharging pipeline relief valve and nitrogen supercharging interface.
Further, triple valve, gas phase hand-operated valve I, pipe are disposed on the gas phase pipeline outward from top of the tank
Road safety valve II and gas phase hand-operated valve II, the triple valve top are respectively arranged with tank body safety valve I, tank body safety valve II；Institute
It states outlet tube road and is disposed with out liquid motor-driven valve, pipeline safety valve IV and liquid hand-operated valve out outward from tank base；It is described
Gas phase pipeline is connected to outlet tube road by gas-liquid connecting pipeline, is provided with gas-liquid communicating valve on the gas-liquid connecting pipeline.
Further, on the pipeline between the gas phase hand-operated valve II and gas-liquid communicating valve and it is connected to gas phase pipeline pressure release
Valve, gas phase interface.
Further, it is described go out pipeline between liquid hand-operated valve and gas-liquid communicating valve on and be connected to outlet tube road relief valve,
Liquid interface out.
Further, magnetic-float type liquid level is set side by side between the liquidometer upper pipeline and liquidometer lower pipeline
Meter, the magnetic-float type liquidometer has the function of data remote, and the upper pipeline setting of magnetic-float type liquidometer is magnetic
Float type level gauge upper valve, the lower pipeline of magnetic-float type liquidometer are provided with magnetic-float type liquidometer lower valve.
Further, it is also set side by side with differential pressure levelmeter between the liquidometer upper pipeline and liquidometer lower pipeline, institute
The upper pipeline for stating differential pressure levelmeter is provided with differential pressure levelmeter upper valve, tank body pressure gauge, and the lower pipeline of the differential pressure levelmeter is set
It is equipped with differential pressure levelmeter lower valve, and is provided with differential pressure levelmeter balanced valve between the upper pipeline and lower pipeline of differential pressure levelmeter.
Further, filling liquid hand-operated valve I, pipeline safety valve are disposed with outward from tank base on the charging line
III, filling liquid hand-operated valve II, charging line relief valve and filling liquid interface.
Further, the gas phase emission pipeline is provided with gas phase emission valve；Blowdown valve is provided on the blowoff line.
The utility model has the beneficial effects that
1, the utility model occupies little space compared with carbon dioxide tank vehicle, puts layout conducive to equipment when construction.
2, the utility model need not once occupy a large amount of food-grade carbon-dioxide tank car resource, influence the life of food enterprise
Produce, can flexible organization idle carbon dioxide tank vehicle to the utility model liquid carbon dioxide storage tank carry out filling liquid.
3, every liquid carbon dioxide storage tank outlet tube line of the utility model is set as DN100, can fully ensure that and apply
Go out liquid speed degree needed for work discharge capacity.
4, the utility model uses lasting nitrogen with pressure to carry out ftercompction for liquid carbon dioxide storage tank top of the tank, can
Prevent liquid carbon dioxide because pipeline frictional resistance is larger, liquid carbon dioxide abrupt pressure reduction generates gasification, and then fracturing unit truck is made to walk sky
The case where pump, occurs, and fully ensures that high flow rate operation.
5, the utility model is made each using the aperture of the liquid valve door of each liquid carbon dioxide storage tank of long-distance centralized control
The liquid level equilibrium of platform liquid carbon dioxide storage tank declines, and guarantees the stabilization of operational discharge capacity.
The utility model is described in further details below with reference to attached drawing.
Detailed description of the invention
Fig. 1 is the utility model flow diagram；
Fig. 2 is the utility model skid schematic diagram.
Description of symbols: 1, nitrogen supercharging interface；2, nitrogen supercharging pipeline relief valve；3, nitrogen supercharging motor-driven valve；4,
Pipeline safety valve I；5, nitrogen supercharging hand-operated valve；6, tank body safety valve 1；7, triple valve；8, tank body safety valve 2；9, gas phase is manual
Valve I；10, pipeline safety valve II；11, gas phase emission valve；12, gas phase hand-operated valve II；13, differential pressure levelmeter upper valve；14, tank body pressure
Power meter；15, magnetic-float type liquidometer upper valve；16, gas phase pipeline relief valve；17, gas phase interface；18, magnetic-float type liquid level
Meter；19, differential pressure levelmeter；20, gas-liquid communicating valve；21, differential pressure levelmeter balanced valve；22, differential pressure levelmeter lower valve；23, magnetic
Float type level gauge lower valve；24, go out liquid interface；25, outlet tube road relief valve；26, filling liquid interface；27, charging line relief valve；
28, filling liquid hand-operated valve II；29, pipeline safety valve III；30, go out liquid hand-operated valve；31, filling liquid hand-operated valve I；32, pipeline safety valve IV；
33, blowdown valve；34, go out liquid motor-driven valve；35, liquidometer lower pipeline；36, blowoff line；37, charging line；38, outlet tube road；
39, liquidometer upper pipeline；40, gas phase emission pipeline；41, gas phase pipeline；42, nitrogen supercharging pipeline；43, gas-liquid connecting pipeline.
Specific embodiment
Embodiment 1:
As shown in Figure 1 and Figure 2, a kind of liquid carbon dioxide storage tank, including tank body, the top of the tank are provided with nitrogen increasing
Pressure pipe road 42, gas phase pipeline 41, gas phase emission pipeline 40, liquidometer upper pipeline 39, the tank base are provided with outlet tube road
38, charging line 37, blowoff line 36, liquidometer lower pipeline 35；Pass through gas between the gas phase pipeline 41 and outlet tube road 38
Liquid communicating valve 20 is connected to.
The liquid carbon dioxide storage tank is designed using skidization, is occupied little space compared with carbon dioxide tank vehicle, and construction is conducive to
When equipment put layout, it is not necessary to once occupy a large amount of food-grade carbon-dioxide tank car resource, influence the production of food enterprise,
Can flexible organization idle carbon dioxide tank vehicle to the utility model liquid carbon dioxide storage tank carry out filling liquid.
Use persistently nitrogen with pressure for liquid carbon dioxide storage tank top of the tank carry out ftercompction, liquid dioxy can be prevented
Change carbon because pipeline frictional resistance is larger, liquid carbon dioxide abrupt pressure reduction generates gasification, and then fracturing unit truck is made to walk empty the case where pumping appearance,
Fully ensure that high flow rate operation.
Embodiment 2:
On the basis of embodiment 1, nitrogen supercharging hand-operated valve 5, pipeline are disposed on the nitrogen supercharging pipeline 42
Safety valve I 4, nitrogen supercharging motor-driven valve 3, nitrogen supercharging pipeline relief valve 2 and nitrogen supercharging interface 1.
It is disposed with triple valve 7, gas phase hand-operated valve I 9, pipeline safety on the gas phase pipeline 41 outward from top of the tank
Valve II 10 and gas phase hand-operated valve II 12 are respectively arranged with tank body safety valve I 6, tank body safety valve II 8 at the top of the triple valve 7；Institute
Stating 38 latus rectum of outlet tube road is DN100, can fully ensure that and go out liquid speed degree needed for operational discharge capacity, from tank body on outlet tube road 38
Bottom is disposed with out liquid motor-driven valve 34, pipeline safety valve IV 32 and liquid hand-operated valve 30 out outward；The gas phase pipeline 41 with
Outlet tube road 38 is connected to by gas-liquid connecting pipeline 43, is provided with gas-liquid communicating valve 20 on the gas-liquid connecting pipeline 43.It is described
On pipeline between gas phase hand-operated valve II 12 and gas-liquid communicating valve 20 and it is connected to gas phase pipeline relief valve 16, gas phase interface 17.Institute
It states out on the pipeline between liquid hand-operated valve 30 and gas-liquid communicating valve 20 and is connected to outlet tube road relief valve 25, go out liquid interface 24.
The blowoff line 36 is provided with blowdown valve 33.
Be disposed with outward on the charging line 37 from tank base filling liquid hand-operated valve I 31, pipeline safety valve III 29,
Filling liquid hand-operated valve II 28, charging line relief valve 27 and filling liquid interface 26.
Magnetic-float type liquidometer 18, institute are set side by side between the liquidometer upper pipeline 39 and liquidometer lower pipeline 35
Stating magnetic-float type liquidometer 18 has the function of data remote, and the upper pipeline setting of magnetic-float type liquidometer 18 be magnetic it is floating
Minor liquidometer upper valve 15, the lower pipeline of magnetic-float type liquidometer 18 are provided with magnetic-float type liquidometer lower valve 23.
Differential pressure levelmeter 19, the difference are also set side by side between the liquidometer upper pipeline 39 and liquidometer lower pipeline 35
The upper pipeline of pressure liquidometer 19 is provided with differential pressure levelmeter upper valve 13, tank body pressure gauge 14, and the pressure gauge 14 has data remote
Function is passed, the lower pipeline of the differential pressure levelmeter 19 is provided with differential pressure levelmeter lower valve 22, and the upper pipeline of differential pressure levelmeter 19
Differential pressure levelmeter balanced valve 21 is provided between lower pipeline.
The gas phase emission pipeline 40 is provided with gas phase emission valve 11.
Using the aperture of the liquid valve door of long-distance centralized control liquid carbon dioxide storage tank, make each liquid carbon dioxide storage
The liquid level equilibrium of tank declines, and guarantees the stabilization of operational discharge capacity.
Embodiment 3:
On the basis of the above embodiments, the liquid carbon dioxide storage tank is applied to carbon dioxide energization, carbon dioxide
In dry method sand fracturing construction, the storage of liquid carbon dioxide, Optimizing construction device layout, liquid storage shape are provided for high flow rate operation
Under state, lower part is liquid carbon dioxide in liquid carbon dioxide storage tank tank body, and top is gaseous carbon dioxide, and design pressure is
3.5MPa, application method include the following steps:
1) filling liquid: being connected to the filling liquid interface 26 of liquid carbon dioxide storage tank and the liquid interface out of liquefied carbon dioxide tank vehicle,
It is connected to the gas phase interface 17 of liquid carbon dioxide storage tank and the gas phase interface of liquefied carbon dioxide tank vehicle, stores up liquid carbon dioxide
The charging line 37 of tank is communicated with the outlet tube road of liquefied carbon dioxide tank vehicle, the gas phase pipeline 41 of liquid carbon dioxide storage tank with
The gas phase pipeline of liquefied carbon dioxide tank vehicle communicates, and the unloading pump of liquefied carbon dioxide tank vehicle is opened, by liquid carbon dioxide slot
The liquid carbon dioxide of vehicle is transferred in liquid carbon dioxide storage tank；
2) liquid carbon dioxide storage tank is depressured: according to the pressure-resistant rank of construction pipeline, controlling liquid carbon dioxide storage tank
Pressure, that is, the liquid carbon dioxide storage tank stagnation pressure after being passed through nitrogen under pressure be generally greater than the pressure 0.5MPa under liquid storage state with
On, but it is not higher than the design pressure of liquid carbon dioxide storage tank；
3) pipeline purging, pressurising: opening gas-liquid communicating valve 20, makes gas phase pipeline 41, gas-liquid communicating valve 20, goes out liquid interface 24
Access is formed, gaseous carbon dioxide enters liquid phase pipeline by this access, opens the construction liquid phase being connected with liquid interface 24 out
Drain valve on pipeline purges pipeline, and the drain valve of the construction liquid phase pipeline is closed after purging, is started to institute
It states construction liquid phase pipeline and carries out pressurising, gas-liquid communicating valve 20 is closed after pressurising；
4) liquid carbon dioxide storage tank pressurising: in work progress, continue nitrogen with pressure from the nitrogen supercharging pipeline 42
Into top of the tank, make tank body stagnation pressure be higher than be depressured under tank body liquid storage state after pressure 0.5MPa or more, but not higher than tank body or
Any one design pressure of pipeline；
5) go out hydraulic control system: the nitrogen supercharging motor-driven valve 3 of liquid carbon dioxide storage tank goes out liquid motor-driven valve 34, tank body pressure gauge
14 and magnetic-float type liquidometer 18 data pass through itself explosion proof control case acquisition after teletransmission to long-range control cabinet collected
Middle to show and control, in work progress, the liquid level of one or more liquid carbon dioxide storage tank of system acquisition automatically controls one
Or the aperture for going out liquid motor-driven valve 34 of more liquid carbon dioxide storage tanks, and then control the liquid out of every liquid carbon dioxide storage tank
Speed declines the liquid level equilibrium of every liquid carbon dioxide storage tank, until construction terminates when liquid level is down to 100~200mm；
6) pipeline pressure release: closing out liquid motor-driven valve 34 or out liquid hand-operated valve 30, opens gas-liquid communicating valve 20, makes gas phase pipeline
41, gas-liquid communicating valve 20, go out liquid interface 24 and form access, the drain valve on construction liquid phase pipeline is opened, using persistently with pressure
Nitrogen replaces liquid phase pipeline, and the liquid carbon dioxide in liquid phase pipeline is discharged, and prevents after the completion of constructing in liquid phase pipeline
Tie dry ice；
7) blowdown pressure release: closing gas-liquid communicating valve 20, stops supplying the nitrogen of liquid carbon dioxide storage tank, closes nitrogen
It is pressurized motor-driven valve 3 or nitrogen supercharging hand-operated valve 5, opens blowdown valve 33, using tank body pressure itself by remaining liquid titanium dioxide
Carbon is all discharged, until pressure is reduced to zero, construction terminates.
The utility model, which uses, continues nitrogen with pressure as the progress ftercompction of liquid carbon dioxide storage tank top of the tank, Neng Goufang
Only liquid carbon dioxide because pipeline frictional resistance it is larger, liquid carbon dioxide abrupt pressure reduction generates gasification, and then fracturing unit truck is made to walk empty pump
The case where occur, fully ensure that high flow rate operation.
Exemplified as above is only to the utility model for example, not constituting to the protection scope of the utility model
Limitation, it is all to be belonged within the protection scope of the utility model with the same or similar design of the utility model.
Claims (9)
1. a kind of liquid carbon dioxide storage tank, it is characterised in that: including tank body, the top of the tank is provided with nitrogen supercharging pipeline
(42), gas phase pipeline (41), gas phase emission pipeline (40), liquidometer upper pipeline (39), the tank base are provided with outlet tube
Road (38), charging line (37), blowoff line (36), liquidometer lower pipeline (35)；The gas phase pipeline (41) and outlet tube road
(38) it is connected between by gas-liquid communicating valve (20).
2. a kind of liquid carbon dioxide storage tank as described in claim 1, it is characterised in that: on the nitrogen supercharging pipeline (42)
It is disposed with nitrogen supercharging hand-operated valve (5), pipeline safety valve I (4), nitrogen supercharging motor-driven valve (3), nitrogen outward from top of the tank
Gas pressure piping relief valve (2) and nitrogen supercharging interface (1).
3. a kind of liquid carbon dioxide storage tank as described in claim 1, it is characterised in that: from tank on the gas phase pipeline (41)
Triple valve (7), gas phase hand-operated valve I (9), pipeline safety valve II (10) and gas phase hand-operated valve II are disposed at the top of body outward
(12), tank body safety valve I (6), tank body safety valve II (8) are respectively arranged at the top of the triple valve (7)；The outlet tube road
(38) liquid motor-driven valve (34), pipeline safety valve IV (32) and liquid hand-operated valve out are disposed with out from tank base on outward
(30)；The gas phase pipeline (41) is connected to outlet tube road (38) by gas-liquid connecting pipeline (43), the gas-liquid connecting pipeline
(43) gas-liquid communicating valve (20) are provided on.
4. a kind of liquid carbon dioxide storage tank as claimed in claim 3, it is characterised in that: the gas phase hand-operated valve II (12) with
On pipeline between gas-liquid communicating valve (20) and it is connected to gas phase pipeline relief valve (16), gas phase interface (17).
5. a kind of liquid carbon dioxide storage tank as claimed in claim 3, it is characterised in that: liquid hand-operated valve (30) and the gas out
On pipeline between liquid communicating valve (20) and it is connected to outlet tube road relief valve (25), goes out liquid interface (24).
6. a kind of liquid carbon dioxide storage tank as described in claim 1, it is characterised in that: the liquidometer upper pipeline (39) with
It is set side by side between liquidometer lower pipeline (35) magnetic-float type liquidometer (18), magnetic-float type liquidometer (18) tool
There is data remote function, and the upper pipeline of magnetic-float type liquidometer (18) is provided with magnetic-float type liquidometer upper valve (15),
The lower pipeline of magnetic-float type liquidometer (18) is provided with magnetic-float type liquidometer lower valve (23).
7. a kind of liquid carbon dioxide storage tank as claimed in claim 6, it is characterised in that: the liquidometer upper pipeline (39) with
It is also set side by side between liquidometer lower pipeline (35) differential pressure levelmeter (19), the upper pipeline setting of the differential pressure levelmeter (19)
There are differential pressure levelmeter upper valve (13), tank body pressure gauge (14), the lower pipeline of the differential pressure levelmeter (19) is provided with differential pressure liquid level
It counts lower valve (22), and is provided with differential pressure levelmeter balanced valve (21) between the upper pipeline and lower pipeline of differential pressure levelmeter (19).
8. a kind of liquid carbon dioxide storage tank as described in claim 1, it is characterised in that: from tank on the charging line (37)
Body bottom is disposed with filling liquid hand-operated valve I (31), pipeline safety valve III (29), filling liquid hand-operated valve II (28), filling liquid pipe outward
Road relief valve (27) and filling liquid interface (26).
9. a kind of liquid carbon dioxide storage tank as described in claim 1, it is characterised in that: the gas phase emission pipeline (40) sets
It is equipped with gas phase emission valve (11)；Blowdown valve (33) are provided on the blowoff line (36).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820449988.3U CN208222055U (en) | 2018-04-02 | 2018-04-02 | A kind of liquid carbon dioxide storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820449988.3U CN208222055U (en) | 2018-04-02 | 2018-04-02 | A kind of liquid carbon dioxide storage tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208222055U true CN208222055U (en) | 2018-12-11 |
Family
ID=64504145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820449988.3U Active CN208222055U (en) | 2018-04-02 | 2018-04-02 | A kind of liquid carbon dioxide storage tank |
Country Status (1)
| Country | Link |
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| CN (1) | CN208222055U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108591814A (en) * | 2018-04-02 | 2018-09-28 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | A kind of liquid carbon dioxide storage tank and its application method |
-
2018
- 2018-04-02 CN CN201820449988.3U patent/CN208222055U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108591814A (en) * | 2018-04-02 | 2018-09-28 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | A kind of liquid carbon dioxide storage tank and its application method |
| CN108591814B (en) * | 2018-04-02 | 2023-08-18 | 中国石油天然气集团有限公司 | Liquid carbon dioxide storage tank and use method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201104 Address after: 100007 Dongcheng District, Dongzhimen, China, North Street, No. 9 Oil Mansion, No. Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Chuanqing Drilling Engineering Co.,Ltd. Address before: 710018 Shaanxi city of Xi'an province Weiyang District four road Fengcheng Changqing Technology Building Patentee before: CNPC CHUANQING DRILLING ENGINEERING COMPANY LIMITED ENGINEERING TECHNOLOGY Research Institute |
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| TR01 | Transfer of patent right |