CN104390142A - Gas-liquid separator automatic drainage system with emergency drainage capacity - Google Patents
Gas-liquid separator automatic drainage system with emergency drainage capacity Download PDFInfo
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Abstract
The invention provides a gas-liquid separator automatic drainage system with emergency drainage capacity. The gas-liquid separator automatic drainage system comprises a gas-liquid separator and a liquid level detection device arranged at one end of the gas-liquid separator; the outlet end of the gas-liquid separator is connected in parallel with a normal drainage pipeline and an emergency drainage pipeline; a first electric ball valve, a flash drum and a storage tank are sequentially arranged on the normal drainage pipeline; a second electric ball valve is arranged on the emergency drainage pipeline; the tail end of the emergency drainage pipeline is connected with the storage tank; the liquid level detection device is respectively and electrically connected with the first electric ball valve and the second electric ball valve. The drainage system implements automatic drainage under the normal and emergency working conditions; adaptability of station operation is improved; normal operation of a downstream compressor is ensured; the fault rate of the compressor is reduced; unattended operation of a station is implemented; operation cost is reduced.
Description
Technical field
The present invention relates to a kind of novel gas-liquid separator drainage system with emergent drainage capacity, specifically the automatic drain system of a kind of oil and gas industry gas gathering station gas-liquid separator.
Background technique
In the development process in gas field, because part gas well water yield is higher, and containing a certain amount of condensate and other impurity, need to carry out gas-liquid separation in gas gathering station.But consider gas field development cost, gas gathering station generally only arranges one-level gas-liquid separator (hereinafter referred to as separator), does not arrange slug catcher.Its conventional drainage system as shown in Figure 1, separator 1 is provided with liquid level detection device 2, it is generally be divided into two-way from discharge opeing outlet that separator drainage system is arranged, one tunnel is manual ball valve 1, another road is manual ball valve 27, electric ball valve 1, manual ball valve 36 in proper order, after this two-way enters flash drum 11 after collecting, and stores in the storage tank 12 arranged after the recovered water separated by separator 1 through flash drum 11 carries out flash distillation in access station, and regularly roping.During normal operation, electric ball valve 1 and liquid level detection device 2 carry out chain, and when liquid level reaches the high liquid level of setting, electric ball valve 1 is opened, and when reaching the low liquid level of setting, electric ball valve 1 is closed; When electric ball valve fault, manually ball valve 1 carries out interim discharge opeing.
There is following problem in above-mentioned drainage system: one is when electric ball valve one 6 fault, needs artificial discharge opeing in production run, and therefore stand the 24 hours needs operators on duty in field, and operating cost is high; Two be electric ball valve 1 using the data of liquid level detection device 2 as switch order, when ＂ falsity ＂ appears in detection device fault, electric ball valve 1 misoperation can be caused, there is operation risk; Three is that gas field is when normally producing, liquid measure is less, therefore the bore of manual ball valve 1, electric ball valve 1 is little, when bringing in a well in a large number, under gas well carries out steeping the operating mode such as last water pumping gas production, compressor start initial stage in winter, in flow line easily there is slug flow phenomenon in liquid, and electric ball valve 1 drainage capacity is not enough, and short time inner separator 1 liquid measure increases, not only affect separation effect but also cause downstream compressor etc. normally to run, affect gas field and normally produce; Four are separators 1 is discharge opeing with pressure, drain age velocity is fast, and flash drum is normal pressure discharge opeing, gravity is relied on to flow in storage tank, drain age velocity is slow, if therefore during emergent discharge opeing, then flash drum 11 drainage capacity is not enough for manual ball valve 1 and electric ball valve 1 discharge opeing simultaneously, and flash drum 11 liquid storage amount exceedes setting value.
Summary of the invention
The object of this invention is to provide the gas-liquid separator automatic drain system with emergent drainage capacity for gas field gas gathering station, to realize the automatic drain of the normal operation of gas gathering station separator, the emergent discharge opeing of slug flow operating mode, puies forward high site reliability of operation, realizes the unmanned of gas gathering station.
For achieving the above object, the present invention is achieved by the following technical solutions, a kind of gas-liquid separator automatic drain system with emergent drainage capacity, comprise gas-liquid separator, be arranged on the liquid level detection device of gas-liquid separator one end, the outlet end of described gas-liquid separator is parallel with normal drainage pipeline and emergent drain line, and described normal drainage pipeline is provided with electric ball valve one, flash drum, storage tank successively, and described emergent drain line is provided with electric ball valve two; And the end of emergent drain line is connected with storage tank, described liquid level detection device is electrically connected with electric ball valve one and electric ball valve two respectively.
Further, described gas-liquid separator is also provided with high level switch and low liquid-level switch, and this high level switch and low liquid-level switch are positioned at the other end of liquid level detection device; Described high level switch and low liquid-level switch are electrically connected with electric ball valve one and electric ball valve two respectively.
Further, the two ends of the electric ball valve one on described normal drainage pipeline are respectively equipped with manual ball valve one and manual ball valve two.
Further, described emergent drain line is also provided with manual ball valve three and electric control valve successively, and manual ball valve three and electric control valve are positioned at the upstream of electric ball valve two, described electric control valve is electrically connected with liquid level detection device.
Further, described gas-liquid separator is also provided with high level switch and low liquid-level switch; The two ends of the electric ball valve one on described normal drainage pipeline are respectively equipped with manual ball valve one and manual ball valve two; Described emergent drain line is also provided with manual ball valve three and electric control valve successively, and manual ball valve three and electric control valve are positioned at the upstream of electric ball valve two; Described high level switch and low liquid-level switch are electrically connected with electric ball valve one, electric ball valve two, electric control valve respectively.
Described liquid level detection device is the filling Level meter of DM5110 type.
The aperture of described electric control valve is 0 ~ 80%.
The present invention adopts technique scheme, has the following advantages: this drainage system realizes automatic drain under normal and emergent operating mode, improves the adaptability that field, station is run, ensures the normal operation of downstream compressor, reduce compressor fault rate; Realize field, station unmanned, reduce operating cost.
Below with reference to accompanying drawing, the present invention is described in further details.
Accompanying drawing explanation
Fig. 1 is typical separators drainage system schematic diagram.
Fig. 2 is a kind of gas-liquid separator automatic drain system architecture schematic diagram with emergent drainage capacity.
1, gas-liquid separator, 2, liquid level detection device, 3, high level switch, 4, low liquid-level switch, 5, manual ball valve one, 6, electric ball valve one, 7, manual ball valve two, 8 manual ball valve three, 9, electric control valve, 10, electric ball valve one, 11, flash drum, 12, storage tank.
Embodiment
Further a kind of gas-liquid separator automatic drain system with emergent drainage capacity is described in detail below in conjunction with drawings and Examples.
Embodiment 1
As Fig. 2 by shown the present invention mainly by gas-liquid separator 1, the filling Level meter of liquid level detection device 2(DM5110 type), high level switch 3, low liquid-level switch 4, manual ball valve 1, manual ball valve 27, manual ball valve 38, electric ball valve 1, electric ball valve 2 10, electric control valve 9, flash drum 11, storage tank 12 forms.
Gas-liquid separator 1 drainage system is divided into two-way, i.e. normal drainage road and emergent discharge opeing road from discharge opeing outlet.Normal drainage road is manual ball valve 1 in proper order, electric ball valve 1, manual ball valve 27, and the liquid of discharge enters flash drum 11 rear access storage tank 12; Emergent discharge opeing road is manual ball valve 38 in proper order, electric control valve 9, electric ball valve 2 10, discharges access storage tank 12.Separator 1 is provided with liquid level detection device 2, high level switch 3 and low liquid-level switch 4.
Described liquid level detection device 2 detects the liquid level in gas-liquid separator 1 continuously, and high level switch 3 and low liquid-level switch 4 are a level sensing respectively, and three completes the switch control rule of electric ball valve 1 and electric control valve 9 jointly.During normal operation, electric ball valve 1 is as liquid discharging valve, when liquid level reaches liquid level in liquid level detection device 2 setting (this level value is lower than the position of high level switch 3), electric ball valve 1 is opened, gas-liquid separator 1 starts discharge opeing, when liquid level is discharged to the position of low liquid-level switch 4, electric ball valve 1 is closed, and completes once normal discharge opeing process.When occurring that the liquid measures such as slug flow are larger, when liquid level reaches high level switch 3, opening electric ball valve 2 10, starting emergent discharge opeing road; Electric control valve 9 carries out the adjustment of open degree according to liquid level, and when generally can be arranged on middle liquid level, (liquid level that electric ball valve 1 is opened) modulating valve open degree is 0, and liquid level is 80% to the open degree of high level switch 3 position electric control valve 9; When liquid level is discharged to middle liquid level, electric ball valve 2 10 is closed, and completes once emergent discharge opeing.When liquid level arrives low liquid-level switch 4, electric ball valve 1, electric ball valve 2 10 and electric control valve 9 are all closed, and during to prevent liquid level fault, natural gas leaking is in flash drum 11 or liquid container 12.Because electric ball valve opens and closes all have travel time, generally 10s ~ 20s, therefore when arranging high level switch 4, low liquid-level switch 3 and middle liquid level, take into account and consider to require the switching time of electric ball valve and liquid storage amount size and the liquid measure that can arrange in separator, if it is too low that above three liquid levels are arranged, then likely valve not completely close and liquid is drained, cause natural gas leaking; If arrange too high, then there is a large amount of liquid accumulation for a long time in separator, both affected separating effect and additionally reduced storage volumes to slug flow, reduced the Processing capacity of slug flow.
Described electric ball valve 1 its control its switch by liquid level detection device 2 and low liquid-level switch 4, it is as normal drainage road, and because discharge opeing is balanced and measure little, therefore valve specification is less.
Described emergent discharge opeing road is because of the timely response of needs and lifting rate is large, therefore it arranges valve specification comparatively greatly, and general its drainage capacity of selection is 4 ~ 6 times of normal drainage road.The effect of electric control valve 9 is when in lower liquid level, control emergent discharge opeing road lifting rate, guarantees that electric ball valve 10 closes the position that rear liquid level is not less than low liquid-level switch 4.
Described high level switch 3 and low liquid-level switch 4, as a switch, cause misoperation of valve for avoiding level meter fault.During to low liquid-level switch 4 position, electric ball valve 1, electric ball valve 2 10 and electric control valve 9 are all closed; During to high level switch 3 position, electric ball valve 2 10 is opened, and electric control valve 9 opens 80%, realizes discharge opeing.
Described emergent discharge opeing way outlet directly accesses storage tank 12 and without flash drum 11, object avoids the flash drum 11 of normal pressure discharge opeing to arrange not in time, and flash drum 11 liquid storage caused exceedes setting value.
Consider normal drainage road electric ball valve 1 and electric ball valve modulating valve 9 often switch motion, probability of malfunction is large, when changing or keep in repair, manually ball valve 1, manual ball valve 27, manual ball valve 38 and electric ball valve 2 10 carries out the isolation on discharge opeing road, realize valve to change online, do not affect field, station and normally produce.
Embodiment 2
In the above-described embodiment, as shown in Figure 2, when liquid level detection device 2 detects that liquid level reaches liquid level in setting, electric ball valve 1 opens discharge opeing, and when being discharged to low liquid-level switch 4, electric ball valve 1 is closed, and completes a normal drainage.
When bringing in a well in a large number, gas well carries out steeping last water pumping gas production, under the operating modes such as compressor start initial stage in winter, in flow line easily there is slug flow phenomenon in liquid, under the operating mode that short time inner separator liquid measure increases, when electric ball valve 1 discharge opeing arrives high level switch 3 not as good as liquid level, start emergent discharge opeing road, electric ball valve 2 10 is opened, electric control valve 9 open degree 80% carries out quick fluid-discharge, when being discharged to middle liquid level, electric ball valve 2 10 is closed, electric control valve 9 open degree is 0%, electric control valve 9 therefrom between liquid level to high level switch open degree between 0% ~ 80%, carry out linear change.
When electric ball valve 6 or electric control valve 9 fault of frequent switch, manual ball valve 5 can be closed, 7 or manual ball valve 8 and electric ball valve 10 realize online replacing, do not affect field, station and produce.
Realize the control when level meter fault of electric ball valve 1, electric ball valve 2 10 and electric control valve 9 by high level switch 3 and low liquid-level switch 4, improve the reliability of system cloud gray model.
This drainage system realizes automatic drain under normal and emergent operating mode, improves the adaptability that field, station is run, ensures the normal operation of downstream compressor, reduce compressor fault rate; Realize field, station unmanned, reduce operating cost.
More than exemplifying is only illustrate of the present invention, does not form the restriction to protection scope of the present invention, everyly all belongs within protection scope of the present invention with the same or analogous design of the present invention.
Claims (7)
1. one kind has the gas-liquid separator automatic drain system of emergent drainage capacity, comprise gas-liquid separator (1), be arranged on the liquid level detection device (2) of gas-liquid separator (1) one end, it is characterized in that, the outlet end of described gas-liquid separator (1) is parallel with normal drainage pipeline and emergent drain line, described normal drainage pipeline is provided with successively electric ball valve one (6), flash drum (11), storage tank (12), described emergent drain line is provided with electric ball valve two (10); And the end of emergent drain line is connected with storage tank (12), described liquid level detection device (2) is electrically connected with electric ball valve one (6) and electric ball valve two (10) respectively.
2. a kind of gas-liquid separator automatic drain system with emergent drainage capacity according to claim 1, it is characterized in that, described gas-liquid separator (1) is also provided with high level switch (3) and low liquid-level switch (4), and this high level switch (3) and low liquid-level switch (4) are positioned at the other end of liquid level detection device (2); Described high level switch (3) and low liquid-level switch (4) are electrically connected with electric ball valve one (6) and electric ball valve two (10) respectively.
3. a kind of gas-liquid separator automatic drain system with emergent drainage capacity according to claim 1, it is characterized in that, the two ends of the electric ball valve one (6) on described normal drainage pipeline are respectively equipped with manual ball valve one (5) and manual ball valve two (7).
4. a kind of gas-liquid separator automatic drain system with emergent drainage capacity according to claim 1, it is characterized in that, described emergent drain line is also provided with successively manual ball valve three (8) and electric control valve (9), and manual ball valve three (8) and electric control valve (9) are positioned at the upstream of electric ball valve two (10), described electric control valve (9) is electrically connected with liquid level detection device (2).
5. a kind of gas-liquid separator automatic drain system with emergent drainage capacity according to claim 1, is characterized in that, described gas-liquid separator (1) is also provided with high level switch (3) and low liquid-level switch (4); The two ends of the electric ball valve one (6) on described normal drainage pipeline are respectively equipped with manual ball valve one (5) and manual ball valve two (7); Described emergent drain line is also provided with successively manual ball valve three (8) and electric control valve (9), and manual ball valve three (8) and electric control valve (9) are positioned at the upstream of electric ball valve two (10); Described high level switch (3) and low liquid-level switch (4) are electrically connected with electric ball valve one (6), electric ball valve two (10), electric control valve (9) respectively.
6. a kind of gas-liquid separator automatic drain system with emergent drainage capacity according to claim 1, it is characterized in that, described liquid level detection device (2) is the filling Level meter of DM5110 type.
7. a kind of gas-liquid separator automatic drain system with emergent drainage capacity according to claim 4 or 5, it is characterized in that, the aperture of described electric control valve (9) is 0 ~ 80%.
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| CN201410632448.5A CN104390142B (en) | 2014-11-12 | 2014-11-12 | Gas-liquid separator automatic drainage system with emergency drainage capacity |
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| CN201410632448.5A CN104390142B (en) | 2014-11-12 | 2014-11-12 | Gas-liquid separator automatic drainage system with emergency drainage capacity |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832788A (en) * | 2015-04-02 | 2015-08-12 | 宁波杭州湾新区祥源动力供应有限公司 | Convenient energy-saving steam separation device |
| CN106439491A (en) * | 2016-09-20 | 2017-02-22 | 中国海洋石油总公司 | Liquid level adjusting valve group for online removing of blockage |
| CN106838618A (en) * | 2017-03-29 | 2017-06-13 | 中国石油天然气集团公司 | A kind of on-line automatic blowdown apparatus of gas pipeline yard |
| CN109506131A (en) * | 2018-12-17 | 2019-03-22 | 中国石油工程建设有限公司 | A kind of associated gas treatment plant slug flow trapping system and method |
| CN110318986A (en) * | 2019-08-07 | 2019-10-11 | 苏州晨恩斯可络压缩机有限公司 | Safe pumping equipment and corresponding safe fluid-discharge method |
| CN110850901A (en) * | 2019-10-30 | 2020-02-28 | 新疆东方希望新能源有限公司 | Method and system for controlling liquid level of vapor-liquid separator in cold hydrogenation production of polycrystalline silicon |
| CN112029545A (en) * | 2020-09-18 | 2020-12-04 | 东华工程科技股份有限公司 | Elastic support load control device and control method for water-gas separator |
| CN112096364A (en) * | 2020-09-04 | 2020-12-18 | 西安长庆科技工程有限责任公司 | Module structure of gas field booster station separator and separation method |
| CN113803637A (en) * | 2020-06-11 | 2021-12-17 | 中国石油化工股份有限公司 | High-pressure gas pressure control system |
| CN116971749A (en) * | 2023-09-23 | 2023-10-31 | 西南石油大学 | Underground ground integrated liquid drainage system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104832788B (en) * | 2015-04-02 | 2017-08-15 | 宁波杭州湾新区祥源动力供应有限公司 | A kind of energy-saving facile type steam point vapour device |
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| CN106439491A (en) * | 2016-09-20 | 2017-02-22 | 中国海洋石油总公司 | Liquid level adjusting valve group for online removing of blockage |
| CN106838618A (en) * | 2017-03-29 | 2017-06-13 | 中国石油天然气集团公司 | A kind of on-line automatic blowdown apparatus of gas pipeline yard |
| CN109506131B (en) * | 2018-12-17 | 2023-11-03 | 中国石油工程建设有限公司 | Associated gas treatment plant slug flow trapping system and method |
| CN109506131A (en) * | 2018-12-17 | 2019-03-22 | 中国石油工程建设有限公司 | A kind of associated gas treatment plant slug flow trapping system and method |
| CN110318986A (en) * | 2019-08-07 | 2019-10-11 | 苏州晨恩斯可络压缩机有限公司 | Safe pumping equipment and corresponding safe fluid-discharge method |
| CN110850901A (en) * | 2019-10-30 | 2020-02-28 | 新疆东方希望新能源有限公司 | Method and system for controlling liquid level of vapor-liquid separator in cold hydrogenation production of polycrystalline silicon |
| CN113803637A (en) * | 2020-06-11 | 2021-12-17 | 中国石油化工股份有限公司 | High-pressure gas pressure control system |
| CN112096364A (en) * | 2020-09-04 | 2020-12-18 | 西安长庆科技工程有限责任公司 | Module structure of gas field booster station separator and separation method |
| CN112029545A (en) * | 2020-09-18 | 2020-12-04 | 东华工程科技股份有限公司 | Elastic support load control device and control method for water-gas separator |
| CN116971749A (en) * | 2023-09-23 | 2023-10-31 | 西南石油大学 | Underground ground integrated liquid drainage system and method |
| CN116971749B (en) * | 2023-09-23 | 2024-02-09 | 西南石油大学 | Underground ground integrated liquid drainage system and method |
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