Plug flow trapper for oil/gas mixed transport section
One, technical field
When the utility model relates to a kind of shallow sea Oilfield using seabed pipeline oil and gas multiphase flow mode, the plug flow trapper for oil/gas mixed transport section that land treating stations is used.
Two, background technology
At present, Shengli Oil Field is marine produces 2000000 tons of crude oil per year, and active response China Petrochemical Industry will be to the requirement of sea development, active development shallow sea petroleum resources.The mode of the defeated disembarkation of offshore oil and gas collection mainly is two kinds, the one, and the offshore oil production pontoon is carried disembarkation, and the 2nd, carry disembarkation by seabed pipeline; Marine gathering system adopts mixed defeated disembarkation to focus on can reduce construction investment.But slug flow very easily appears in disembarkation oil and gas multiphase flow pipeline, and the generation of slug flow makes multiphase pipe flow unstable vibration occur, can cause pressure-drop in pipeline sharply to increase, and ordinary production and safety in the influence station endanger very big.Slug catcher is the main method that addresses this problem.
Three, summary of the invention
The purpose of this utility model provides a kind of plug flow trapper for oil/gas mixed transport section, and the slug flow that solves seabed mixed defeated disembarkation pipeline generation causes the pressure drop of land treating stations pipeline sharply to increase, sharply shake, influence the problem of interior ordinary production in station and safety.
The technical solution of the utility model realizes in the following manner:
Plug flow trapper for oil/gas mixed transport section by housing, oil gas eddy flow preseparator, fluid uniform device, overflow weir, subtract punching, Ji Shadou, sand clean out pipe group, oil-out, sewage draining exit, delivery port, relief valve connection, pressure sensor interface, oil-water interfaces detector interface, gas demister and manhole and form, it is characterized in that housing is made as horizontal cylindrical shape, be provided with oil gas eddy flow preseparator, manhole, relief valve connection, oil-water interfaces detector interface, pressure transmitter interface and gas demister by preface from left to right on housing top; Inside is provided with fluid uniform device, hydrorrhea stream weir plate, sand clean out pipe group and oil spill stream weir plate by preface from left to right at the bottom of housing; The outside is provided with Ji Shadou, delivery port, sewage draining exit and oil-out by preface from left to right at the bottom of housing.
Oil gas eddy flow preseparator is made as cylindrical shape, be provided with gas phase communicating pipe in the upper end, control valve is installed on the pipe, pipe end feeds in the housing, oil gas eddy flow preseparator bottom is made as the taper downspout, the vertical insertion in the housing is connected with fluid uniform device in the housing, and tangential direction is provided with oil and gas import in the middle part of oil gas preswirl eliminator.
Hydrorrhea stream weir plate is made as semicircle, be vertically welded at the bottom of the housing on, breach is last, breach is in the middle and upper part of housing.
Oil spill stream weir plate is made as semicircle, is vertically welded in housing bottom, and breach is last, and indentation, there is in the middle and lower part of housing.
Through retrieval both at home and abroad, do not find the technical products identical as yet with the utility model, the utility model has solved the influence of mixed transporting tube line segment plug flow to producing, and has reduced construction costs, has made things convenient for production management.
Four, description of drawings
Fig. 1-structural representation of the present utility model.
Sequence number explanation among the figure:
1, trap housing 13, gas demister
2, oil gas eddy flow preseparator 14, gas vent
3, gas-liquid import 15, sand clean out pipe group
4, gas phase communicating pipe 16, sand washing shower nozzle
5, downspout 17, sand collecting hopper
6, fluid uniform device 18, sand clean out pipe
7, hydrorrhea stream weir plate 19, sediment outflow pipe
8, saddle 20, water out
9, population 21, sewage draining exit
10, relief valve port 22, oil export
11, oil-water interfaces detector interface 23, subtract punching
12, pressure sensor interface 24, oil spill stream weir plate
25, ladder
Five, the specific embodiment
For further disclosing technical scheme of the present invention,, elaborate by embodiment below in conjunction with Figure of description;
The utility model relates to a kind of plug flow trapper for oil/gas mixed transport section device that is used to capture the mixed transportation pipeline slug flow, by housing 1, oil gas eddy flow preseparator 2, fluid uniform device 6, subtract punching 23, overflow weir 7, sand collecting hopper 17, sand clean out pipe group 15, sand removing hole 19, delivery port 20, sewage draining exit 21, oil-out 22, relief valve connection 10, oil-water interfaces detector interface 11, pressure sensor interface 12, gas demister 13, population 9 and form.Be provided with a cylindrical shape oil gas eddy flow preseparator 2 on housing 1 left end top, which is provided with gas phase communicating pipe 4, control valve is installed on the pipe, feed gas phase communicating pipe in the housing, the rectangle that is provided with an angle of inclination in mouth of pipe bottom subtracts punching 23, subtracts punching and is welded on inner walls; Oil gas eddy flow preseparator 2 is divided into taper downspout 5, the vertical insertion in the housing, be connected with the fluid uniform device 6 in the housing, tangential direction is provided with oil and gas import 3 at eddy flow preseparator middle part, on the trap shell inwall on the right of fluid uniform device, vertically be welded with large semi-circular hydrorrhea stream weir plate 7, breach is last, inwall in the housing right part vertically is welded with small semicircle shape oil spill stream weir plate 24, breach is last, the bottom of flowing the left side trap housing of weir plate 24 in oil spill is provided with delivery port 20, and the bottom of flowing the right trap housing of weir plate in oil spill is provided with oil-out 22.Top, the end in the left side trap housing of oil spill stream weir plate is installed and is provided with sand clean out pipe group 15, and its bottom is installed and is provided with sand collecting hopper 17 and sand removing hole 19.The housing wall top is provided with the gas demister 13 of manhole 9, relief valve connection 10, oil-water interfaces instrument interface 11, band mist eliminator from left to right by preface.Its operating principle of plug flow trapper for oil/gas mixed transport section and the course of work are: the oil, gas, water and sand of mixed transporting tube line mixes to come liquid to enter oil gas eddy flow preseparator 2 eddy flows change fluid flow direction from import 3, gas, liquid initial gross separation, gas enters case top by gas phase communicating pipe 4, discharges by exporting 14 from gas behind the mist eliminator in the gas demister 13 after subtracting punching 23; Liquid after the separation enters liquid uniform device 6 by downspout 5, liquid slowly flows out uniformly by uniform device 6 bottoms, oil gas eddy flow preseparator 2, uniform device 6, weir plate 7, housing 1 composition subtract to dash to be distinguished, and comes the percussion of liquid to container by oil gas eddy flow preseparator 2, uniform device 6 and the effective reduction of weir plate 7 effects.After the gas-liquid separation, liquid to the stable region, further carries out gas-liquid separation, water-oil separating by weir plate 7 overflows in the stable region, the crude oil after dehydration separates automatically through weir plate 24 overflows to oil pocket, by float liquor-level regulator control liquid level, discharge from oil-out 22; Oil-water interfaces in the oil-water interfaces measuring device stable region carry out draining by the aperture of control water out 20 place's control valves.In device oil, gas, moisture from, come solid particle entrained in the liquid under action of gravity, be deposited on housing bottom, when deposition of solid when the certain thickness, by sand clean out pipe group 15, sand washing shower nozzle 16, sand clean out pipe 18 with the sediment outflow pipe 19 airtight discharges of the solid of deposition from sand collecting hopper 17.Saddle 8 is bases of housing.Ladder 25 is to be provided with for the installation that makes things convenient for slug catcher and maintenance.