CN107084310B - Oil gas recovery floating ball one-way valve and oil gas recovery device - Google Patents
Oil gas recovery floating ball one-way valve and oil gas recovery device Download PDFInfo
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- CN107084310B CN107084310B CN201710421450.1A CN201710421450A CN107084310B CN 107084310 B CN107084310 B CN 107084310B CN 201710421450 A CN201710421450 A CN 201710421450A CN 107084310 B CN107084310 B CN 107084310B
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- 238000011084 recovery Methods 0.000 title claims abstract description 53
- 238000007667 floating Methods 0.000 title claims abstract description 25
- 239000007788 liquid Substances 0.000 claims abstract description 70
- 238000004062 sedimentation Methods 0.000 claims abstract description 6
- 238000003860 storage Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 9
- 230000032683 aging Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 80
- 238000000034 method Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000005057 refrigeration Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000003915 liquefied petroleum gas Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16T—STEAM TRAPS OR LIKE APPARATUS FOR DRAINING-OFF LIQUIDS FROM ENCLOSURES PREDOMINANTLY CONTAINING GASES OR VAPOURS
- F16T1/00—Steam traps or like apparatus for draining-off liquids from enclosures predominantly containing gases or vapours, e.g. gas lines, steam lines, containers
- F16T1/20—Steam traps or like apparatus for draining-off liquids from enclosures predominantly containing gases or vapours, e.g. gas lines, steam lines, containers with valves controlled by floats
- F16T1/22—Steam traps or like apparatus for draining-off liquids from enclosures predominantly containing gases or vapours, e.g. gas lines, steam lines, containers with valves controlled by floats of closed-hollow-body type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/06—Details or accessories
- B67D7/42—Filling nozzles
- B67D7/54—Filling nozzles with means for preventing escape of liquid or vapour or for recovering escaped liquid or vapour
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K49/00—Means in or on valves for heating or cooling
- F16K49/005—Circulation means for a separate heat transfer fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16T—STEAM TRAPS OR LIKE APPARATUS FOR DRAINING-OFF LIQUIDS FROM ENCLOSURES PREDOMINANTLY CONTAINING GASES OR VAPOURS
- F16T1/00—Steam traps or like apparatus for draining-off liquids from enclosures predominantly containing gases or vapours, e.g. gas lines, steam lines, containers
- F16T1/38—Component parts; Accessories
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Check Valves (AREA)
Abstract
The invention provides an oil gas recovery floating ball one-way valve and an oil gas recovery device, which relate to the technical field of petrochemical equipment and comprise a valve seat, a first valve body, a second valve body, a ball body and a heat exchange interface; a first cavity for oil gas sedimentation is formed in the first valve body; a second cavity for heat exchange is formed between the second valve body and the first valve body; the heat exchange interface is communicated with the side wall of the second valve body and is used for cold and heat exchange in the first cavity so as to control the temperature in the first cavity to be in a constant temperature state, the liquefied oil gas is arranged in the first cavity through the ball body, and the liquefied oil gas can subside through self-static pressure, so that one-way flow from the inlet end to the outlet end through the ball body; the technical problems of large external consumption, easy aging, short service cycle, strong dependence and many auxiliary facilities generated by the traditional liquid seal tank and the float-type lyophobic valve in the prior art are solved, and the technical effects of simple structure, low manufacturing cost, no external consumption, no external auxiliary facilities and long service cycle are realized.
Description
Technical Field
The invention relates to the technical field of petrochemical equipment, in particular to an oil gas recovery floating ball one-way valve and an oil gas recovery device.
Background
The oil gas recovery means that volatilized oil gas is collected in the processes of producing, transporting, loading and unloading oil products and refueling vehicles, and then is reconverted into liquid oil products by the relevant technical means of absorption, adsorption, condensation and the like, so that the purposes of protecting the environment and recycling are achieved. At present, a great deal of condensing technology is adopted in the mainstream oil gas recovery system, and the technology liquefies and recovers various oil products in the condensing process, and meanwhile, the moisture contained in the liquefied oil gas. Because the temperature of the condensed and liquefied oil product and the water is low, the common temperature is between 5 ℃ and-40 ℃, and the low-temperature liquid oil product can directly ice the water in the low-temperature liquid oil product to block a liquid pipeline. In addition, in the operation process of the oil gas recovery device, the liquid pipeline is provided with the outlet wind pressure of the centrifugal fan, and in order to prevent phenomena of air leakage, pressure flushing and the like between each heat exchanger and the temporary storage tank, a one-way valve is needed to be adopted to isolate the pipeline from other parts in a one-way.
The oil gas recovery check valve among the prior art mainly includes: a liquid seal tank or a liquid seal pipe and a float-type lyophobic valve.
The liquid seal tank or the liquid seal pipe is a common static pressure type unidirectional facility, a communicating vessel principle is adopted, two ends of a liquid self static pressure isolation pipeline are utilized, and when the liquid level of the liquid seal tank or the liquid seal pipe rises to reach a static pressure value, the redundant liquid is naturally discharged through the other side; in order to prevent the liquid seal tank or the liquid seal pipe from being frozen and blocked, the liquid seal tank or the liquid seal pipe is generally wound and then insulated by explosion-proof electric tracing.
The float-type lyophobic valve utilizes the density difference of liquid and gas to drive the valve clack to open or close by the lifting of the float through the liquid level change of the liquid, so as to achieve the purpose of gas blocking and liquid discharging. The supercooling degree of the drain valve is small, the drain valve is not influenced by the working pressure and temperature change, and the drain valve is provided with liquid, so that the technology is simple and the unidirectional efficiency is higher.
However, in the prior art, the pressure change of the system can occur when the oil gas recovery device is operated, and when the pressure is high, the liquid in the liquid seal tank or the liquid seal pipe can be blown away to lose unidirectional effect; in addition, the technology needs external power supply to generate certain power consumption, and the explosion-proof electric tracing band is easy to age and influence the service cycle when running in a low-temperature state and needs to be replaced periodically. For the use of the float-type lyophobic valve in an oil-gas recovery low-temperature environment, serious ice blockage and freezing blockage phenomena exist, and in order to solve the phenomena, an explosion-proof electric tracing or steam pipeline winding method is generally adopted to maintain the valve temperature of the float-type lyophobic valve. Thereby generating external power consumption or steam consumption; in particular, when steam tracing is adopted, extra auxiliary measures such as steam pipelines, decompression, temperature saving and the like are required, and the oil gas recovery device is influenced to be stopped under the stopping state such as overhauling of a steam pipe network.
Disclosure of Invention
The invention aims to provide an oil gas recovery floating ball one-way valve and an oil gas recovery device, which are used for solving the technical problems of large external consumption, easy aging, short service cycle, strong dependence and many auxiliary facilities generated by a traditional liquid seal tank or a liquid seal pipe and a float type lyophobic valve in the prior art.
The invention provides an oil gas recovery floating ball one-way valve, which comprises: the device comprises a valve seat, a first valve body, a second valve body, a sphere and a heat exchange interface;
the valve seat is connected with a first valve body, and a first cavity for oil gas sedimentation is formed in the first valve body; an inlet end is arranged at one end of the first valve body, which is far away from the valve seat, an outlet end is arranged at the joint of the valve seat and the first valve body, and an outlet channel of the outlet end penetrates through the valve seat;
the sphere is arranged in the first cavity, is close to the outlet end and is used for controlling unidirectional flow of liquid from the inlet end to the outlet end;
the second valve body is arranged outside the first valve body and connected with the valve seat, and a second cavity for heat exchange is formed between the second valve body and the first valve body;
the heat exchange interface is communicated with the side wall of the second valve body and used for cold and heat exchange in the second cavity so as to control the temperature in the first cavity to be in a constant temperature state.
Further, a leakage member is arranged at the joint of the valve seat and the first valve body, is provided with a leakage hole, is attached to the ball body and is used for controlling liquid to flow out from the outlet end.
Further, the second cavity comprises a second left cavity and a second right cavity, and the second left cavity and the second right cavity are respectively arranged on two sides of the valve seat.
Further, the heat exchange interface comprises a first heat exchange interface and a second heat exchange interface, the first heat exchange interface is communicated with the second left cavity, and the second heat exchange interface is communicated with the second right cavity.
Further, the invention provides an oil gas recovery floating ball one-way valve, which also comprises a cover net;
the cover net is arranged between the inlet end and the sphere and is connected with the first valve body;
the cover screen is arranged outside the sphere and used for filtering liquid to enter the first cavity so as to control the rate of the liquid entering the first cavity.
Further, a circlip for sealing is arranged between the cover net and the first valve body.
Further, the invention provides an oil gas recovery floating ball one-way valve, which also comprises a valve cover and a middle channel gasket;
the valve gap sets up in the one end that the valve seat was kept away from to the second valve body, and the middle way gasket sets up between valve gap and second valve body, and the valve gap is connected with the second valve body.
Further, the valve cover is detachably connected with the second valve body;
a third cavity for temporarily storing liquid to enter the first cavity is formed between the valve cover and the cover net, and the third cavity is communicated with the inlet end.
Further, the valve seat, the first valve body, the second valve body, the ball body and the valve cover are all made of steel materials.
The invention provides an oil gas recovery device which comprises an oil gas heat exchanger, a refrigerating unit, a temporary storage tank and an oil gas recovery floating ball one-way valve, wherein the oil gas heat exchanger is connected with the temporary storage tank;
the oil-gas heat exchanger is connected with the inlet end and is used for controlling the liquefaction of oil gas so as to enable the liquid to enter the first cavity;
the refrigerating unit is respectively connected with the oil-gas heat exchanger and the heat exchange interface and is used for transferring the heat of the oil-gas heat exchanger to the heat exchange interface so as to control the heat exchange in the second cavity;
the temporary storage tank is communicated with the outlet end and is used for collecting liquefied oil gas liquid.
The invention provides an oil gas recovery floating ball one-way valve, which comprises: the device comprises a valve seat, a first valve body, a second valve body, a sphere and a heat exchange interface; the valve seat is connected with a first valve body, and a first cavity for oil gas sedimentation is formed in the first valve body; an inlet end is arranged at one end of the first valve body, which is far away from the valve seat, an outlet end is arranged at the joint of the valve seat and the first valve body, and an outlet channel of the outlet end penetrates through the valve seat; the second valve body is arranged outside the first valve body and connected with the valve seat, and a second cavity for heat exchange is formed between the second valve body and the first valve body; the heat exchange interface is communicated with the side wall of the second valve body and is used for cold and heat exchange in the second cavity so as to control the temperature in the first cavity to be in a constant temperature state, the positions of the first valve body and the second valve body are fixed through the valve seat, the ball body is arranged in the first cavity and is close to the outlet end, and liquefied oil gas can subside through self-static pressure, so that unidirectional flow from the inlet end to the outlet end through the ball body is realized; in addition, through setting up the liquid of invariable temperature in the second cavity to carry out heat exchange through the lateral wall of first valve body, guaranteed the temperature in the first cavity, solved the external consumption that traditional liquid seal jar or liquid seal pipe, float formula lyophobic valve that exists among the prior art produced big, easy ageing, life cycle is short, the dependence is strong, affiliated facility is many technical problem, has realized simple structure, low in cost, does not have external consumption moreover, does not have external affiliated facility, long technological effect of life cycle.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of an oil and gas recovery floating ball check valve according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a partial enlarged structure of an oil and gas recovery floating ball check valve according to an embodiment of the present invention;
FIG. 3 is a process flow diagram of an oil and gas recovery device provided by an embodiment of the invention;
fig. 4 is a flow chart of an oil gas recovery device according to an embodiment of the present invention.
Icon: 100-a valve seat; 200-a first valve body; 300-a second valve body; 400-sphere; 500-heat exchange interfaces; 600-inlet end; 700-outlet end; 800-a seepage member; 801-leak holes; 900-cover net; 110-circlips; 120-valve cover; 130-middle channel gaskets; 140-an oil-gas heat exchanger; 150-refrigerating units; 160-an oil gas recovery floating ball one-way valve; 170-a temporary storage tank.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that, if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are used, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, only for convenience of describing the present invention and simplifying the description, and does not indicate or imply that the indicated apparatus or element must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like, as used herein, are used for descriptive purposes only and are not to be construed as indicating or implying any relative importance.
In the description of the present invention, it should be noted that unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
FIG. 1 is a schematic diagram of the overall structure of an oil and gas recovery floating ball check valve according to the present embodiment; wherein the method comprises the steps of the process comprises, the sphere 400 is in a floating state due to the liquefied petroleum gas.
FIG. 2 is a schematic diagram of a partially enlarged structure of the oil and gas recovery floating ball check valve according to the present embodiment; wherein the weep hole 801 is provided on the weep member 800.
Fig. 3 is a process flow chart of the oil gas recovery device provided in the present embodiment.
FIG. 4 is a flow chart of the oil gas recovery device provided in the present embodiment; wherein, the refrigeration unit 150 exchanges heat with the oil and gas heat exchanger 140.
The embodiment provides a floater check valve is retrieved to oil gas, includes: valve seat 100, first valve body 200, second valve body 300, ball 400, and heat exchange interface 500; the valve seat 100 is connected with a first valve body 200, and a first cavity for oil gas sedimentation is formed in the first valve body 200; an inlet end 600 is arranged at one end of the first valve body 200 far away from the valve seat 100, an outlet end 700 is arranged at the joint of the valve seat 100 and the first valve body 200, and an outlet channel of the outlet end 700 penetrates through the valve seat 100; the sphere 400 is disposed in the first cavity, and the sphere 400 is close to the outlet end 700, for controlling the unidirectional flow of the liquid from the inlet end 600 to the outlet end 700; the second valve body 300 is disposed outside the first valve body 200, and the second valve body 300 is connected with the valve seat 100, and a second cavity for heat exchange is formed between the second valve body 300 and the first valve body 200; the heat exchange interface 500 is communicated with the side wall of the second valve body 300 for heat exchange in the second cavity to control the temperature in the first cavity to be in a constant temperature state.
The valve seat 100 and the first valve body 200 may be connected in various manners, for example: welding, riveting, bonding, etc., preferably, the valve seat 100 and the first valve body 200 are connected by welding.
Preferably, the method comprises the steps of, the valve seat 100 is connected to the second valve body 300 by welding.
The heat exchange interface 500 and the second valve body 300 may be connected in various manners, for example: welding, riveting, bonding, etc., preferably, the heat exchange interface 500 is connected to the second valve body 300 by welding.
The specific process, heat exchange interface 500 and refrigerating unit 150 intercommunication are through carrying out the heat transfer to the liquid of second cavity for the second cavity exchanges heat with the liquefied oil gas in the first cavity, makes in the first cavity be in constant temperature state always, can reach the unidirectional efficiency of check valve, and can satisfy the low temperature state and use.
The oil gas recovery floater check valve that this embodiment provided includes: valve seat 100, first valve body 200, second valve body 300, ball 400, and heat exchange interface 500; the valve seat 100 is connected with a first valve body 200, and a first cavity for oil gas sedimentation is formed in the first valve body 200; an inlet end 600 is arranged at one end of the first valve body 200 far away from the valve seat 100, an outlet end 700 is arranged at the joint of the valve seat 100 and the first valve body 200, and an outlet channel of the outlet end 700 penetrates through the valve seat 100; the second valve body 300 is disposed outside the first valve body 200, and the second valve body 300 is connected with the valve seat 100, and a second cavity for heat exchange is formed between the second valve body 300 and the first valve body 200; the heat exchange interface 500 is communicated with the side wall of the second valve body 300 and is used for cold and heat exchange in the second cavity to control the temperature in the first cavity to be in a constant temperature state, the positions of the first valve body 200 and the second valve body 300 are fixed through the valve seat 100, the ball 400 is arranged in the first cavity, the ball 400 is close to the outlet end 700, and liquefied oil gas can be settled through self-static pressure, so that unidirectional flow from the inlet end 600 to the outlet end 700 is realized through the ball 400; in addition, through setting up the liquid of invariable temperature in the second cavity to carry out heat exchange through the lateral wall of first valve body 200, guaranteed the temperature in the first cavity, solved the external consumption that traditional liquid seal jar or liquid seal pipe, float formula lyophobic valve that exists among the prior art produced big, easy ageing, life cycle is short, the dependence is strong, the technical problem that affiliated facilities are many, realized simple structure, low in cost, moreover do not have external consumption, do not have external affiliated facilities, long technological effect of life cycle.
On the basis of the above embodiment, further, the joint of the valve seat 100 and the first valve body 200 of the oil gas recovery floating ball check valve provided in this embodiment is provided with a leakage member 800, the leakage member 800 is provided with a leakage hole 801, and the leakage member 800 is attached to the ball 400, so as to control the liquid to flow out from the outlet end 700.
Wherein, the junction of seepage component 800 and spheroid 400 is provided with the concave surface for spheroid 400 and seepage component 800 laminate completely, have guaranteed the unidirectional efficiency of check valve.
Further, the second cavity includes a second left cavity and a second right cavity, which are disposed on two sides of the valve seat 100, respectively.
Further, the heat exchange interface 500 includes a first heat exchange interface and a second heat exchange interface, where the first heat exchange interface is communicated with the second left cavity, and the second heat exchange interface is communicated with the second right cavity.
Wherein, because second valve body 300 welds with disk seat 100, so disk seat 100 is left cavity and second right cavity with the second cavity respectively for second left side cavity and second right cavity exist alone, thereby through first heat exchange interface and second heat exchange interface respectively with left cavity of second and second right cavity intercommunication, guaranteed the heat exchange efficiency of second cavity more, and the independence of left cavity of second and second right cavity, make the heat transfer effect of second cavity better.
The oil gas recovery floater check valve that this embodiment provided sets up in the junction of disk seat 100 and first valve body 200 through seepage component 800, has guaranteed the unidirectional efficiency of check valve to and exist alone through second left cavity and second right cavity and guaranteed the heat exchange efficiency of second cavity, and make the second cavity heat transfer effect better.
On the basis of the above embodiment, further, the oil gas recovery floating ball check valve provided in this embodiment further includes a cover net 900; the cover net 900 is disposed between the inlet end 600 and the ball 400, and the cover net 900 is connected with the first valve body 200; the cover net 900 is arranged outside the sphere 400 and is used for filtering liquid into the first cavity so as to control the rate of liquid entering the first cavity.
Further, a circlip 110 for sealing is provided between the cover net 900 and the first valve body 200.
Wherein, cover net 900 sets up between entrance point 600 and spheroid 400 to the oil gas after the liquefaction enters into cover net 900 top through entrance point 600, enters into in the first cavity through filtering cover net 900, thereby can filter debris or the frozen vapor in the oil gas after the liquefaction to cover net 900 outside, guaranteed that the oil gas after the liquefaction can not exist big ice-cube, reduced ice-blocking, frozen stifled possibility.
Further, the embodiment provides an oil gas recovery floating ball check valve, which further includes a valve cover 120 and a middle gasket 130; the valve cover 120 is disposed at one end of the second valve body 300 away from the valve seat 100, the middle gasket 130 is disposed between the valve cover 120 and the second valve body 300, and the valve cover 120 is connected with the second valve body 300.
Further, the valve cover 120 is detachably connected with the second valve body 300; a third cavity for temporary storage of liquid into the first cavity is formed between the valve cover 120 and the cover 900, and is in communication with the inlet end 600.
The connection relationship between the valve cover 120 and the second valve body 300 may be various, for example: the valve cover 120 is preferably connected to the second valve body 300 by bolting, by elastic protrusion, by flange connection, etc.
Since there is a slow leak of liquid through the cover web 900, the third chamber may serve to temporarily store liquid into the first chamber.
Further, the materials of the valve seat 100, the first valve body 200, the second valve body 300, the ball 400 and the valve cover 120 are all steel materials.
Preferably, the materials of the valve seat 100, the first valve body 200, the second valve body 300, the ball 400, and the valve cover 120 are all stainless steel materials; making the valve seat 100, the first valve body 200, the second valve body 300, the ball 400, and the valve cover 120 more resistant to corrosion and aging.
The oil gas recovery floater check valve that this embodiment provided is connected with second valve body 300 through valve gap 120 to form the third cavity that is used for keeping in liquid entering first cavity between valve gap 120 and the cover net 900, guaranteed stability and leakproofness in the liquid entering first cavity, make the design more reasonable, it is more practical.
The oil gas recovery device provided by the embodiment comprises an oil gas heat exchanger 140, a refrigerating unit 150, a temporary storage tank 170 and the oil gas recovery floating ball check valve 160; the oil gas heat exchanger 140 is connected with the inlet end 600 and is used for controlling the oil gas to be liquefied so as to enable the liquid to enter the first cavity; the refrigerating unit 150 is respectively connected with the oil-gas heat exchanger 140 and the heat exchange interface 500, and is used for transferring the heat of the oil-gas heat exchanger 140 to the heat exchange interface 500 so as to control the heat exchange in the second cavity; temporary storage tank 170 communicates with outlet port 700 for collecting the liquefied hydrocarbon liquid.
The specific process comprises the following steps: the oil gas is liquefied after condensing and heat exchanging by the refrigerating unit 150, the liquid oil product needs to be settled by self-static pressure after being liquefied, but the gas state in the oil gas heat exchanger 140 is provided with positive pressure, and in order to prevent gas cross and pressure flushing, the oil gas needs to be discharged to the temporary storage tank 170 after passing through a one-way valve; the oil gas recovery floating ball check valve 160 utilizes the density difference of liquid and gas to enable the ball 400 to be opened or closed in a lifting way through the liquid level change of the liquid, so as to achieve the purpose of unidirectional gas resistance and liquid drainage; the second cavity of the oil gas recovery floating ball check valve 160 is provided with a heat source inlet and a heat source outlet, the heat source is liquid, the temperature of the liquid condensed by the refrigerating unit 150 is constant at about 30-35 ℃, and the flow rate and the flow velocity can meet the heat exchange effect.
The heat exchange interface 500 is connected in series with the high-temperature low-pressure side of the corresponding refrigeration unit 150, when the refrigeration unit 150 starts to operate, the oil-gas heat exchanger 140 refrigerates to liquefy oil gas, and at the moment, the refrigeration unit 150 transmits heat to the heat exchange interface 500, so that the first cavity is always in an anti-ice blocking and anti-freezing blocking temperature environment; in addition, the cold energy generated by the oil gas recovery floating ball check valve 160 is taken away by the refrigerant circulation of the refrigerating unit 150, and the refrigerating unit 150 can utilize the partial cold energy to play an auxiliary role on the expansion evaporation front end of the refrigerating work flow of the refrigerating unit 150, so that the effects of utilizing the cold energy and increasing the evaporation efficiency are achieved.
Preferably, the oil gas heat exchanger 140 is connected with the inlet end 600 through a flange, the refrigerating unit 150 is connected with the heat exchange interface 500 through a flange, and the temporary storage tank 170 is connected with the outlet end 700 through a flange.
The oil gas recovery device provided by the embodiment provides heat for the corresponding oil gas recovery floating ball check valve 160 through the refrigerating unit 150, the use condition is stable and reliable, and the external power and steam consumption and the external auxiliary facilities are not needed, so that the cost is reduced, the technical problems of large external consumption, easy aging, short use period, strong dependence and multiple auxiliary facilities, which are generated by the traditional liquid seal tank or liquid seal pipe and the float type lyophobic valve in the prior art, are solved, and the technical effects of simple structure, low manufacturing cost, no external consumption, no external auxiliary facilities and long use period are realized.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (7)
1. An oil and gas recovery float check valve, comprising: the device comprises a valve seat, a first valve body, a second valve body, a sphere and a heat exchange interface;
the valve seat is connected with the first valve body, and a first cavity for oil gas sedimentation is formed in the first valve body; an inlet end is arranged at one end, far away from the valve seat, of the first valve body, an outlet end is arranged at the joint of the valve seat and the first valve body, and an outlet channel of the outlet end penetrates through the valve seat;
the sphere is arranged in the first cavity and is close to the outlet end and used for controlling unidirectional flow of liquid from the inlet end to the outlet end;
the second valve body is arranged outside the first valve body and is connected with the valve seat, and a second cavity for heat exchange is formed between the second valve body and the first valve body;
the heat exchange interface is communicated with the side wall of the second valve body and is used for exchanging cold and heat in the second cavity so as to control the temperature in the first cavity to be in a constant temperature state;
a leakage member is arranged at the joint of the valve seat and the first valve body, is provided with a leakage hole, is attached to the ball body and is used for controlling the liquid to flow out from the outlet end;
the utility model also comprises a cover net; the cover net is arranged between the inlet end and the sphere, and is connected with the first valve body;
the cover screen is arranged outside the sphere and used for filtering liquid to enter the first cavity so as to control the rate of liquid entering the first cavity;
the second cavity comprises a second left cavity and a second right cavity, and the second left cavity and the second right cavity are respectively arranged on two sides of the valve seat.
2. The oil and gas recovery float check valve of claim 1, wherein said heat exchange interface comprises a first heat exchange interface and a second heat exchange interface, said first heat exchange interface being in communication with said second left cavity and said second heat exchange interface being in communication with said second right cavity.
3. The oil and gas recovery float check valve of claim 1, wherein a circlip for sealing is provided between said cage mesh and said first valve body.
4. The oil and gas recovery float check valve of claim 3, further comprising a valve cover and a middle gasket;
the valve cover is arranged at one end, far away from the valve seat, of the second valve body, the middle channel gasket is arranged between the valve cover and the second valve body, and the valve cover is connected with the second valve body.
5. The oil and gas recovery float check valve of claim 4, wherein said valve cover is removably connected to said second valve body;
a third cavity for temporarily storing liquid to enter the first cavity is formed between the valve cover and the cover net, and the third cavity is communicated with the inlet end.
6. The oil and gas recovery float check valve of claim 5, wherein said valve seat, said first valve body, said second valve body, said ball and said valve cover are all steel materials.
7. An oil gas recovery device, which is characterized by comprising an oil gas heat exchanger, a refrigerating unit, a temporary storage tank and an oil gas recovery floating ball one-way valve according to any one of claims 1-6;
the oil-gas heat exchanger is connected with the inlet end and is used for controlling oil-gas liquefaction so as to enable liquid to enter the first cavity;
the refrigerating unit is respectively connected with the oil-gas heat exchanger and the heat exchange interface and is used for transmitting the heat of the oil-gas heat exchanger to the heat exchange interface so as to control the heat exchange in the second cavity;
the temporary storage tank is communicated with the outlet end and used for collecting liquefied oil gas liquid.
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| CN201710421450.1A CN107084310B (en) | 2017-06-07 | 2017-06-07 | Oil gas recovery floating ball one-way valve and oil gas recovery device |
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| CN201710421450.1A CN107084310B (en) | 2017-06-07 | 2017-06-07 | Oil gas recovery floating ball one-way valve and oil gas recovery device |
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| CN107084310B true CN107084310B (en) | 2023-11-21 |
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| CN109630860A (en) * | 2019-02-27 | 2019-04-16 | 天津安联天源节能科技有限公司 | A kind of antifreeze constant temp jacket type steam trap |
| CN113294541A (en) * | 2020-07-17 | 2021-08-24 | 阮勤林 | Sealed cabin inflation sealing valve under deep water environment |
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| CN107084310A (en) | 2017-08-22 |
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