CN101975332B - Large-displacement oil-water separator for gas holder - Google Patents

Large-displacement oil-water separator for gas holder Download PDF

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Publication number
CN101975332B
CN101975332B CN201010533503A CN201010533503A CN101975332B CN 101975332 B CN101975332 B CN 101975332B CN 201010533503 A CN201010533503 A CN 201010533503A CN 201010533503 A CN201010533503 A CN 201010533503A CN 101975332 B CN101975332 B CN 101975332B
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oil
water
gas
level
communicated
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CN101975332A (en
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高海平
王苏林
戴连鹏
朱斯
郑晓虎
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CISDI Engineering Co Ltd
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CISDI Engineering Co Ltd
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Priority to CN201010533503A priority Critical patent/CN101975332B/en
Publication of CN101975332A publication Critical patent/CN101975332A/en
Priority to PCT/CN2011/081404 priority patent/WO2012059018A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B01D17/0208—Separation of non-miscible liquids by sedimentation
    • B01D17/0214—Separation of non-miscible liquids by sedimentation with removal of one of the phases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D19/00—Degasification of liquids
    • B01D19/0063—Regulation, control including valves and floats

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Separating Particles In Gases By Inertia (AREA)

Abstract

The invention discloses a large-displacement oil-water separator for a gas holder. A main drainage system comprising a main drainage pipe and a liquid level detection component is arranged on the basis of the conventional oil-water separator. The separator can increase displacement, maintain an extremely small water level change of a bottom oil groove and realize the aim of controlling the oil level of the piston oil groove by using the oil-water separator, thus the separator is suitable for storing the gas with relatively high temperature, improves the heat value of the gas, saves the cooling water and ensures low use cost; and by increasing limited investment, the separator of the invention can greatly improve the drainage capability of the conventional oil-water separator, reduce the loss of the sealing oil and expand the application range of the thin-oil sealed type gas holder from the normal-temperature saturated gas to the gas holder of saturated gas with inlet temperature of about 70 DEG C and is connected in series with the gas pipeline.

Description

The big water displacement oil and water seperator of gas cabinet
Technical field
The present invention relates to a kind of gas cabinet accessory, particularly a kind of oil and water seperator of gas cabinet sealing recycle oil.
Background technique
Gas cabinet is a Steel Vessel of storing industry and domestic gas, owing to take up coal gas, therefore, has relatively high expectations for its sealability.In the existing technology, the piston cylinder operator dry gas holder of comparatively general employing thin oil seal adopts the mode of the closed circuit pump circulation of sealing oil constantly to supply with sealing oil to the piston oil duct, keeps oil duct oil sealing height, prevents that coal gas from escaping.Oil supplying device comprises the receipts oiled-plate method on oil feed pump and pipe arrangement, preparation fuel tank and overflow mechanism and the piston, forms the piston seal fluid supply apparatus jointly to piston oil duct fuel feeding, to guarantee the sealing level height of piston oil duct.
In the using process; Recycle oil is owing to contact comparatively abundant with coal gas; Have that more condensed water compiles and mix the back and get into gas cabinet bottom oil duct,, need before follow-up sealing oil circulation, condensed water be separated in order to guarantee the normal use of gas cabinet with recycle oil; For achieving the above object, sealing oil needs through oil and water seperator separating and condensing water before circulation.
Because the coal gas that thin-oil sealed gas tank stores in the existing technology needs spray cooling to satisfy the requirement that thin-oil sealed gas tank stores usually, general cooling is just sent into gas cabinet for about 60 ℃ saturated coal gas and after gaspipe network coal gas is more than needed and is stored.And gas temperature reduces the relative step-down of calorific value of back coal gas, and wastes a large amount of water.
And under the situation that thin-oil sealed gas tank gas storage temperature improves, the saturated water content of coal gas will significantly increase.For example, be the blast furnace gas calculating of 10kPa with the low altitude area gauge pressure, the saturated water content of coal gas is about 18g/m in the time of 20 ℃ 3The saturated water content of coal gas is about 32g/m in the time of 30 ℃ 3The saturated water content of coal gas is about 100g/m in the time of 50 ℃ 3The saturated water content of coal gas is about 176g/m in the time of 60 ℃ 3The saturated water content of coal gas is about 356g/m in the time of 72 ℃ 3This shows that the higher coal gas of temperature needs more a large amount of water displacement.For example, one 200,000 m 3Gas cabinet has 4 oil and water seperator, and flow is 250,000 m on the coal gas main pipe when it is connected on 3The saturated coal gas of/h and Import Gas temperature are that the water displacement demand of single oil and water seperator can reach 10t/h under 72 ℃ the situation.And existing oil and water seperator is to realize the control of piston oil duct oil level and realize automatic drain function that through regulating bottom oil duct oil level single oil and water seperator drainage capacity is merely 1 t/h; If improve thin-oil sealed gas tank gas storage temperature, then water displacement can become greatly, how to keep the constant basically of oil duct profit position, bottom in the case and keeps oil-water separation to become problem demanding prompt solution.
Therefore; Need improve existing gas cabinet oil and water seperator, can increase water displacement, keep the SEA LEVEL VARIATION of bottom oil duct very little; Realization utilizes oil and water seperator to come the purpose of control piston oil duct oil level; Thereby can be applicable to the coal gas that storage temperature is higher, practice thrift cooling water when improving calorific value of gas, practice thrift user cost.
Summary of the invention
In view of this; The purpose of this invention is to provide the big water displacement oil and water seperator of a kind of gas cabinet, can increase water displacement, keep the SEA LEVEL VARIATION of bottom oil duct very little; Realization utilizes oil and water seperator to come the purpose of control piston oil duct oil level; Thereby can be applicable to the coal gas that storage temperature is higher, practice thrift cooling water when improving calorific value of gas, practice thrift user cost.
The big water displacement oil and water seperator of gas cabinet of the present invention; Comprise hermetic separation chamber, secondary separation chamber and recovery chamber; Hermetic separation chamber and gas cabinet bottom oil duct is communicated with, and the hermetic separation chamber is divided into oil gas pool and HYDROCARBON-BEARING REGION through overflow mechanism, and said HYDROCARBON-BEARING REGION is communicated with between its oil level bottom and secondary separation chamber; The secondary separation chamber is communicated with recovery chamber; Also comprise main drainage system, said main drainage system comprises main drainpipe and leve detecting assembly, and condensation water and its outer rows mouth of a river that said main drainpipe water intake is communicated in bottom, oil gas pool are higher than oil gas pool liquid level formation sealing structure for water; Said leve detecting assembly is arranged at that the oil gas pool is used to detect oil level or/and water level, and main drainpipe is provided with the oil level that detects according to leve detecting assembly or/and the modulating valve that water level is regulated.
Further, said gas cabinet bottom oil duct is communicated in the oil gas pool through U type connecting vessels, and the caliber of said U type connecting vessels is greater than DN100;
Further, between said gas cabinet bottom oil duct bottom U type connecting vessels interface and the oil-water interfaces oil separating plate is set;
Further, also comprise automatic control system, be used to receive leve detecting assembly oil level or/and water level signal and according to this signal to the modulating valve signal of giving an order;
Further; Said overflow mechanism comprises the water overflow assembly and the oil spill stream assembly of mutual seal; Water overflow assembly comprises vertical spill pipe and the horizontal spill pipe that is arranged at the oil gas pool, and said vertical spill pipe upper end is communicated with the gas phase in oil gas pool, and the lower end is communicated in the condensation water in oil gas pool; The middle part is provided with flow-off, and horizontal spill pipe is communicated between flow-off and the oil and water seperator drainage channel; Oil spill stream assembly comprises the oily overflow weir that is arranged between oil gas pool and the HYDROCARBON-BEARING REGION, and the crest of weir of said oily overflow weir is higher than the condensation water liquid level in oil gas pool;
Further, said overflow mechanism is provided with the overflow height controlling device, and said horizontal spill pipe passes oily overflow weir wall and is fixedly connected also bending downwards with it, and bending part is slidingly matched and inserts vertical section of the oil and water seperator drainage channel downwards; The overflow height controlling device comprises support and vertical screw mandrel; Support is fixedly set in the oil and water seperator shell; Vertically the screw mandrel lower end is can be fixedly connected on horizontal spill pipe, upper end hermetically passing oil and water seperator shell and support screw-thread fit around the mode of its rotational;
Further, said leve detecting assembly comprises with the vertical fluid level tube that connects in oil gas pool and places the level meter in the fluid level tube;
Further, upwardly extending oil seal tube is communicated in the secondary separation chamber to HYDROCARBON-BEARING REGION through being communicated with also with its bottom.
The invention has the beneficial effects as follows: the big water displacement oil and water seperator of gas cabinet of the present invention; Oil gas pool in oil and water seperator hermetic separation chamber is provided with main drainpipe and leve detecting assembly; The liquid level parameter of leve detecting assembly is used to control the modulating valve on the main drainpipe, realizes regulating automatically; Under the ordinary production situation, most of condensed water effluxes through main drainpipe, and few partial condensation water is discharged through condensed water overflow assembly in the existing separator; When oil-water interfaces reached in the separator condensed water overflow assembly, the aperture of modulating valve reached maximum through automatic adjusting, when oil-water interfaces are low; Reduce control valve opening gradually; Adjust main drain discharge, when the low sealing structure for water to main drainpipe of oil-water interfaces made main drainage means stop draining automatically, main drainpipe stopped draining; Oil-water interfaces raise the draining driving force of main drainage means then are provided automatically; Simultaneously, when the Overflow drainage water seal height of water level of oil and water seperator reduces, can realize the moisturizing of drain water seal through the aperture that reduces modulating valve; This shows that the present invention can increase water displacement, keep the SEA LEVEL VARIATION of bottom oil duct very little; Realization utilizes oil and water seperator to come the purpose of control piston oil duct oil level; Thereby can be applicable to the coal gas that storage temperature is higher, practice thrift cooling water when improving calorific value of gas, user cost is low; The present invention is under the situation that increases limited investment; Can improve greatly having the oil and water seperator drainage capacity now; Reduce the breakage of sealing oil, can the using scope of thin-oil sealed gas tank be extended to inlet temperature for～70 ℃ saturated coal gas and be connected on the gas cabinet field on the gas pipe line from the saturated coal gas of normal temperature.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
Fig. 1 is a structural representation of the present invention;
Fig. 2 be Fig. 1 along A-A-A-A to sectional view.
Embodiment
Fig. 1 is a structural representation of the present invention; Fig. 2 be Fig. 1 along A-A-A-A to sectional view; As shown in the figure: the big water displacement oil and water seperator of the gas cabinet of present embodiment, comprise hermetic separation chamber 1, secondary separation chamber 2 and recovery chamber 3, hermetic separation chamber 1 is communicated with gas cabinet bottom oil duct 11; As shown in the figure, through being communicated with the connecting tube 7 that valve 23 is set; Hermetic separation chamber 1 is divided into oil gas pool I a and HYDROCARBON-BEARING REGION I b through overflow mechanism; Said HYDROCARBON-BEARING REGION I b is communicated with between its oil level bottom and secondary separation chamber 2; Secondary separation chamber 2 is communicated with recovery chamber 3, can adopt the mode of intercommunicating pore, connecting tube or overflow to be communicated with; Also comprise main drainage system; Said main drainage system comprises main drainpipe 8 and leve detecting assembly; Condensation water and its drain opening that said main drainpipe 8 water intakes are communicated in I a bottom, oil gas pool are higher than oil gas pool I a liquid level formation sealing structure for water; Said leve detecting assembly is arranged at that oil gas pool I a is used to detect oil level or/and water level, and present embodiment adopts the structure of sensed water level; Main drainpipe 8 is provided with the oil level that detects according to leve detecting assembly or/and the modulating valve 9 that water level is regulated; Simultaneously, main drainpipe 8 also is provided with manually operated valve 10, makes things convenient for modulating valve 9 to break down and afterwards overhauls or manual tune.
As shown in the figure, Ha is that the oil in oil gas pool is dark; Hb is the depth of water in oil gas pool; Hc is the inside and outside water surface discrepancy in elevation of overflow mechanism; Hd is the movable altitude range of the oil-water interfaces in oil gas pool, guarantees that bottom oil duct liquid level can keep normally, thereby guarantees piston oil duct oil level; He is the not reservation surplus of oil-containing of draining, should guarantee oil and water seperator oil overflow weir 13, horizontal spill pipe 14 and vertically spill pipe 15 all go up/move down 90mm (oil duct oil level rising/reduction promptly) main drainpipe and do not discharge oil; The water seal height of master's drainage means when Hf is the oil and water seperator stoppage in transit a little less than oil level, guarantees that coal gas does not leak in the oil and water seperator; The water seal height of oil and water seperator main drainpipe when Hg is normal the operation, water seal height Hg can confirm its actual height when gas cabinet carries out air test.
Oil gas pool I a is the separation zone of oil, water and coal gas three-phase coexistence; HYDROCARBON-BEARING REGION I b is the separation zone of the sealing oil and gas two-phase coexistent that goes out of first separation.
Oil duct 11 flows out from the gas cabinet bottom oil water mixture and coal gas get into oil gas pool I a, and few part gas condensed water effluxes through overflow mechanism; Most of condensed water is then discharged after modulating valve is regulated flow by main drainpipe; The control of control valve opening is realized by automatic control system through leve detecting assembly; Measure level height Ha in the I a of oil gas pool or/and height of water level Hb controls; The aperture of modulating valve 9 is regulated automatically oil-water interfaces is fluctuateed in the Hd scope, and when Hd reached maximum, main drainage means water displacement was zero; Hd surpasses the then main drainage means water seal height of maximum magnitude Hg makes main drainage means stop draining (this moment, the water spill pipe of overflow mechanism also stopped draining) automatically; Hd diminishes then provides the draining of main drainage means driving pressure automatically; Sealing oil after the I a standing separation of oil gas pool gets into HYDROCARBON-BEARING REGION I b through overflow mechanism, and recycles after getting into secondary separation chamber 2 and recovery chamber 3.。
In the present embodiment, said gas cabinet bottom oil duct 11 is communicated in oil gas pool I a through U type connecting vessels 6, and U type connecting vessels 6 is provided with valve 21, and the caliber of said U type connecting vessels 6 is greater than DN100, and present embodiment adopts DN250; Big caliber can be adapted to bigger water displacement, and slows down the variation of draining flow velocity, thereby makes the fluctuation variation of bottom oil duct water level as far as possible little, reduces the influence to the fluctuation of piston oil duct oil level; Simultaneously, can suitably strengthen the space of oil gas pool I a, make the time of more a large amount of condensed waters standing separation in the I a of oil gas pool unlikely too short, fully separate.
In the present embodiment, between said gas cabinet bottom oil duct 11 bottom U type connecting vessels 6 interfaces and the oil-water interfaces oil separating plate 22 is set; Oil separating plate 22 for perpendicular to or favour the baffle arrangement of gas cabinet side plate, be positioned at the oil-water interfaces bottom, present embodiment is semicircle baffle arrangement; Oil separating plate 22 can prevent to mix more tempestuously with condensed water from the sealing oil that the gas cabinet side plate flows down; Guarantee to discharge the bottom interior lower floor of oil duct oil-water separation condensed water slightly completely; Be equivalent to increase the quiescence time of condensed water outlet, played the effect of profit initial gross separation.
In the present embodiment, also comprise automatic control system 24, be used to receive leve detecting assembly oil level or/and water level signal and according to this signal to the modulating valve signal of giving an order; Realize control automatically, get rid of jamming, simultaneously, alleviate operator's working strength.
In the present embodiment; Said overflow mechanism comprises the water overflow assembly and the oil spill stream assembly of mutual seal; Water overflow assembly comprises the vertical spill pipe 15 and horizontal spill pipe 14 that is arranged at oil gas pool I a, and said vertical spill pipe 15 upper ends are communicated with the gas phase of oil gas pool I a, and the lower end is communicated in the condensation water of oil gas pool I a; The middle part is provided with flow-off 15a, and horizontal spill pipe 14 is communicated between flow-off and the oil and water seperator drainage channel 18; As shown in the figure, drainage channel 18 is communicated in draining storehouse 20 through water sealing (sealing water) pipe 19, and draining storehouse 20 is communicated with the waste pipe that has drain valve 25 that is provided with; Oil spill stream assembly comprises the oily overflow weir 13 that is arranged between oil gas pool I a and the HYDROCARBON-BEARING REGION I b, and the crest of weir of said oily overflow weir 13 is higher than the condensation water liquid level of oil gas pool I a; Overflow mechanism is simple and compact for structure, and floor space is little.
In the present embodiment; Said overflow mechanism is provided with the overflow height adjusting device; Said horizontal overflow pipe 14 passes that oily downflow weir 13 walls are fixedlyed connected with it and downward bending forms downward bending part 14a, and bending part 14a is slidingly matched and inserts the vertical section 18a that oil water separator drainage channel 18 is provided with downwards; The overflow height adjusting device comprises support 17 and vertical screw mandrel 16; Support is fixedly set in the oil water separator shell; Vertically screw mandrel 16 lower ends to be can being fixedly connected on horizontal overflow pipe 14 around the mode that its axis rotates, upper end hermetically passing oil water separator and support 17 threaded engagement, as shown in the figure; By regulating the height of overflow mechanism, can effectively regulate the liquid level of gas chamber bottom oil duct.
In the present embodiment, said leve detecting assembly comprises and vertical fluid level tube that connects 4 of oil gas pool I a and the level meter 5 that places in the fluid level tube 4; Fluid level tube 4 structures and oil gas pool I a vertically connect, and gas, oil and water three are connected in fluid level tube, guarantee the accuracy of level gauging.
In the present embodiment, upwardly extending oil seal tube 12 is communicated in secondary separation chamber 2 to HYDROCARBON-BEARING REGION I b through being communicated with also with its bottom, reaches the better seal effect, guarantees the oil and water seperator proper functioning.
Explanation is at last; Above embodiment is only unrestricted in order to technological scheme of the present invention to be described; Although with reference to preferred embodiment the present invention is specified, those of ordinary skill in the art should be appreciated that and can make amendment to technological scheme of the present invention or/and be equal to replacement; And not breaking away from the aim and the scope of technological scheme of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.

Claims (8)

1. big water displacement oil and water seperator of gas cabinet; Comprise hermetic separation chamber, secondary separation chamber and recovery chamber; Hermetic separation chamber and gas cabinet bottom oil duct is communicated with, and the hermetic separation chamber is divided into oil gas pool and HYDROCARBON-BEARING REGION through overflow mechanism, and said HYDROCARBON-BEARING REGION is communicated with between its oil level bottom and secondary separation chamber; The secondary separation chamber is communicated with recovery chamber; It is characterized in that: also comprise main drainage system, said main drainage system comprises main drainpipe and leve detecting assembly, and condensation water and its drain opening that said main drainpipe water intake is communicated in bottom, oil gas pool are higher than oil gas pool liquid level formation sealing structure for water; Said leve detecting assembly is arranged at that the oil gas pool is used to detect oil level or/and water level, and main drainpipe is provided with the oil level that detects according to leve detecting assembly or/and the modulating valve that water level is regulated.
2. the big water displacement oil and water seperator of gas cabinet according to claim 1 is characterized in that: said gas cabinet bottom oil duct is communicated in the oil gas pool through U type connecting vessels, and the caliber of said U type connecting vessels is greater than DN100.
3. the big water displacement oil and water seperator of gas cabinet according to claim 2 is characterized in that: between said gas cabinet bottom oil duct bottom U type connecting vessels interface and the oil-water interfaces oil separating plate is set.
4. the big water displacement oil and water seperator of gas cabinet according to claim 3 is characterized in that: also comprise automatic control system, be used to receive leve detecting assembly oil level or/and water level signal and according to this signal to the modulating valve signal of giving an order.
5. the big water displacement oil and water seperator of gas cabinet according to claim 4; It is characterized in that: said overflow mechanism comprises the water overflow assembly and the oil spill stream assembly of mutual seal; Water overflow assembly comprises vertical spill pipe and the horizontal spill pipe that is arranged at the oil gas pool, and said vertical spill pipe upper end is communicated with the gas phase in oil gas pool, and the lower end is communicated in the condensation water in oil gas pool; The middle part is provided with flow-off, and horizontal spill pipe is communicated between flow-off and the oil and water seperator drainage channel; Oil spill stream assembly comprises the oily overflow weir that is arranged between oil gas pool and the HYDROCARBON-BEARING REGION, and the crest of weir of said oily overflow weir is higher than the condensation water liquid level in oil gas pool.
6. the big water displacement oil and water seperator of gas cabinet according to claim 5; It is characterized in that: said overflow mechanism is provided with the overflow height controlling device; Said horizontal spill pipe passes oily overflow weir wall and is fixedly connected also bending downwards with it, and bending part is slidingly matched and inserts vertical section of the oil and water seperator drainage channel downwards; The overflow height controlling device comprises support and vertical screw mandrel; Support is fixedly set in the oil and water seperator shell; Vertically the screw mandrel lower end is can be fixedly connected on horizontal spill pipe, upper end hermetically passing oil and water seperator shell and support screw-thread fit around the mode of its rotational.
7. the big water displacement oil and water seperator of gas cabinet according to claim 6 is characterized in that: said leve detecting assembly comprises with the vertical fluid level tube that connects in oil gas pool and places the level meter in the fluid level tube.
8. the big water displacement oil and water seperator of gas cabinet according to claim 7 is characterized in that: upwardly extending oil seal tube is communicated in the secondary separation chamber to HYDROCARBON-BEARING REGION through being communicated with also with its bottom.
CN201010533503A 2010-11-05 2010-11-05 Large-displacement oil-water separator for gas holder Active CN101975332B (en)

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CN201010533503A CN101975332B (en) 2010-11-05 2010-11-05 Large-displacement oil-water separator for gas holder
PCT/CN2011/081404 WO2012059018A1 (en) 2010-11-05 2011-10-27 Coal gas tank large water discharge oil-water separator

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CN101975332B (en) * 2010-11-05 2012-10-03 中冶赛迪工程技术股份有限公司 Large-displacement oil-water separator for gas holder
CN104524816B (en) * 2015-01-20 2016-08-24 天津大学 A kind of intelligence control system for Liquid liquid Separation device
CN105546321B (en) * 2016-01-18 2017-07-11 中冶赛迪工程技术股份有限公司 Hydrops remover on a kind of dry gas holder piston
CN105620963A (en) * 2016-01-19 2016-06-01 浙江海洋学院 Oil storage tank provided with oil-water discrimination mechanism
CN106838600B (en) * 2017-03-07 2023-07-18 中冶赛迪工程技术股份有限公司 Gas storage pressure adjustable gas tank
CN107366823B (en) * 2017-07-31 2023-06-13 中冶赛迪工程技术股份有限公司 Accumulated water draining device on piston of dry type gas tank and method for supplementing water with gas
CN107416946A (en) * 2017-09-15 2017-12-01 浙江嘉隆机械设备有限公司 Inclined tube separator
CN110131565B (en) * 2019-06-28 2024-02-06 中冶赛迪工程技术股份有限公司 Oil pump station for thin oil sealed gas tank
CN112774257A (en) * 2020-12-25 2021-05-11 森诺技术有限公司 Water level regulator implanted into upper cavity of oil-water separation device
CN113376218A (en) * 2021-06-08 2021-09-10 西安石油大学 Oil-gas-water three-phase content integrated online measuring device in oil pipeline and using method
CN113244663B (en) * 2021-06-24 2021-09-17 山东尚能实业有限公司 Oil-water separation device for petrochemical oil refining
CN114458937A (en) * 2021-12-29 2022-05-10 云南建投安装股份有限公司 Single-stage Wiggins gas chamber hydraulic integral lifting cabinet top mounting method

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