CN1775652A - Oil-gas recovery sealing mechanism for top loading-unloading liquid hydrocarbon product - Google Patents
Oil-gas recovery sealing mechanism for top loading-unloading liquid hydrocarbon product Download PDFInfo
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- CN1775652A CN1775652A CN 200410094827 CN200410094827A CN1775652A CN 1775652 A CN1775652 A CN 1775652A CN 200410094827 CN200410094827 CN 200410094827 CN 200410094827 A CN200410094827 A CN 200410094827A CN 1775652 A CN1775652 A CN 1775652A
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Abstract
The invention relates to an oil gas recycling airtight mechanism applied to hydrocarbon liquid airtight entrucking, having self-sealing force, and force self-balancing functions. On condition of no need of extra pressure provided by crane tube, able to realize excellent sealing at oil inlet of a tanker, effectively preventing oil gas leaking out.
Description
Technical field
The present invention relates to reclaim in a kind of petrochemical complex or the chemical products storage and transport process closure mechanism of oil gas.Particularly a kind of closure mechanism that reclaims oil gas when being used for the top and filling the liquid hydrocarbon product tank car.
Background technology
Liquid hydrocarbon product (as gasoline, aromatic hydrocarbons, solvent wet goods) will experience the handling process of several times train or tank wagon usually from the end user of dispatching from the factory, in the oil tank of these tank cars, filling in the process of liquid hydrocarbon product (hereinafter referred to as charge of oil), understanding some hydrocarbon-containifirst gas (hereinafter to be referred as oil gas) and in oil tank, discharge.The charge of oil mouth opens wide, and the method for the oil gas exhaust to atmosphere that the charge of oil process of leaving produces is called uncovered charge of oil; Cooresponding with it is that the charge of oil mouth is airtight, the oil gas that produces in the charge of oil process is put together, behind special device for recovering oil and gas recovery hydrocarbon component wherein, reach the tail gas exhaust to atmosphere of environmental emission standard after will purifying at last, this charge of oil method is called airtight charge of oil.Perfect day by day along with the continuous progress of society and every laws and regulations, more and more enterprises begins the adverse effect of recognizing that uncovered charge of oil causes environment, health of human body, safety in production, and recycle the economic implications of discharging the hydrocarbon component in the gas, uncovered charge of oil is sealed charge of oil just gradually and replaces.
Charge of oil process with the domestic top filling that generally adopts is an example, and the basic craft course of airtight charge of oil can be described as: in the charge of oil district that is made up of a plurality of charge of oil cranes position, many tank cars are carrying out the charge of oil operation simultaneously.Operating personal manually inserts the charge of oil pipe of the loading arm charge of oil mouth from tank car oil tank top, and when the end of charge of oil pipe mouth during near the bottom position of oil tank, the closure mechanism that is fixed on the charge of oil pipe just lives to form sealing with the charge of oil flap.By the charge of oil pipe in oil tank during charge of oil, understand to evaporate the liquid phase of some hydrocarbon component in jar and enter a jar interior gas-phase space, form hydrocarbon component and Air mixing gas (below be referred to as oil gas) with original air-blending in the oil tank, continuous rising along with in the charge of oil process jar of interior liquid level, gas-phase space in jar is replaced by liquid phase gradually, oil gas is forced to discharge from the exhausr port that is located on the closure mechanism in jar, import the gas phase house steward through the gas phase arm, the oil gas that the gas phase arm of each loading arm is discharged converges in the gas phase house steward after through a check valve, concentrates at last to enter the independent device for recovering oil and gas that is provided with.Device for recovering oil and gas reclaims the hydrocarbon component in the oil gas, removed the tail gas exhaust to atmosphere that hydrocarbon component reaches environmental emission standard.For preventing that charge of oil process kind because of slip up excessive charge of oil of accidental operation occurs overflowing jar, is equipped with liquid-level probe usually on the charge of oil pipe, so as overflow jar take place before, cut off oil sources automatically.
Domestic and international existing oil-gas recovery sealing mechanism is the truncated cone-shaped structure that is fixed on the charge of oil pipe mostly, so the sealing surface that closure mechanism contacts with the charge of oil mouth of oil tank is the conical surface, wrap up in the elastomeric material that adheres to rubber-like at the skin of the conical surface, utilize external force downward on the oil filling riser (the part gravity of the spring force that oil filling riser upper spring mechanism applies or the external force of other form and oil filling riser self), make between closure mechanism and the charge of oil mouth and form linear sealing, oil gas leaks in the prevention charge of oil process.The employing airbag structure that also has is inflated in the air bag by closure mechanism on being installed in the charge of oil pipe, and it is expanded, and forms the sealing between closure mechanism and the charge of oil mouth inwall.But all there is following defective in varying degrees in existing closure mechanism:
1) need apply an enough big downward external force to closure mechanism.Extraneous not only to satisfy seal request between closure mechanism and the charge of oil mouth to the downward application force that closure mechanism applies, also will overcome jar interior gas pressure intensity and act on the sizable upwards thrust that produces on the closure mechanism, this has increased the difficulty of oil filling riser application of force device structure and the operation easier of operating personal greatly.
2) the sealing force size variation is big.In charge of oil pipe and closure mechanism back in place in a period of time before pressure does not reach normal pressure in the oil tank behind the charge of oil, do not produce or do not produce enough upwards application forces in the oil tank as yet, this section be applied to period on the oil filling riser satisfy normal running the time seal request external force almost all be applied on the sealing surface, excessive sealing force easily causes the damage of leakproofing material; In addition because the deformation of tank car base spring, no matter the height that is charge of oil mouth in tank wagon or the train tank car charge of oil process all can reduce gradually along with the increase of oil capacity, sometimes the sealing force that is applied on the closure mechanism is difficult to adapt to this variation, influences sealing effectiveness.
3) contraposition is forbidden to cause poorly sealed.During charge of oil, the contraposition of oil filling riser and charge of oil mouth is to lean on the mobile realization of oil filling riser or tank car, owing to various reason oil filling risers usually is not the midperpendicalar position that is in the charge of oil mouth well, but be in certain heeling condition, at this moment being fixed on the linear sealing that forms between the apical margin of the closure mechanism of the conical surface seal on the charge of oil pipe and charge of oil mouth is not the circle of a real meaning just, causes poorly sealed and leaks.
Since the above-mentioned defective that closure mechanism exists, although the organic efficiency of present device for recovering oil and gas own is very high, the out of reach expection far away of the oil and gas content of whole oil gas removal process actual recovered, quite a few oil gas leaks in the atmosphere from the sealing of charge of oil mouth.Therefore, the sealing problem of resolving closure mechanism becomes a key link of whole gas recovery system for oil.
Goal of the invention
An object of the present invention is to propose a kind of sealing force realization leak free self sealss power sealing oil-gas recovery sealing mechanism by self producing.
Another object of the present invention is to propose a kind of oil-gas recovery sealing mechanism with force self-balanced function that does not need oil filling riser that extra thrust is provided.
Summary of the invention
The object of the present invention is achieved like this: on the charge of oil pipe that is fixedly mounted on loading arm, the oil-gas recovery sealing mechanism that has level measurement probe and exhausr port, there is one to be fixed on the charge of oil pipe, have the circular top plate of exhausr port above, level measurement probe passes top board hermetically, a ring sealing base that is positioned under the top board, be tightly connected with a upper end and top board, the annular extrusome that lower end and seal receptacle are tightly connected, the three surrounds and forms a seal chamber, seal chamber is communicated with the gas-phase space of oil tank, by the sealing that forms between seal receptacle and the oil tank charge of oil mouth oil gas is not leaked, a registration device that is fixed on charge of oil pipe or the top board is arranged, so that make the seal receptacle of closure mechanism when contacting, be in suitable position with the charge of oil mouth, have at least one group of upper end to be articulated on the top board and the hooking device of oil tank can be hooked or throw off in the lower end, utilize hooking device hook oil tank with the force transmission of oil gas pressure action on the closure mechanism top board to oil tank, the realizable force self-balancing, thereby do not need oil filling riser that extra downward thrust is provided, with seal receptacle from gravity and oil gas pressure action seal receptacle up and down the application force on the annulus area of the difference of cross-sectional area make a concerted effort realize the sealing of self sealss power as sealing force.
It is with respect to for the prior art of the outside application of force that the said self sealss power of the present invention seals.Prior art normally is applied to spring force on the oil filling riser by spring device, and the charge of oil pipe by oil filling riser is delivered on the closure mechanism again.And the sealing force of self sealss power sealing function of the present invention between seal receptacle and tank car charge of oil mouth mainly is made of two power, one be seal receptacle deadweight produce from gravity, it is directed downwards; Another be the pressure action of oil gas at the seal receptacle application force on the annulus area of the difference of cross-sectional area up and down, the application force that on the annulus area of the difference of the cross-sectional area that sealing is had jurisdiction over that forms between extrusome cross-sectional area and seal receptacle and the charge of oil mouth, produces of oil gas pressure just.The direction of this application force has three kinds of situations, first kind of situation be the extrusome cross-sectional area greater than the sealing cross-sectional area of having jurisdiction over, pressure action power is downward at this moment, the difference of cross-sectional area is big must be many more, downward pressure action power is big more; Second kind of situation is that the two equates, pressure action power is zero; The third situation is the extrusome cross-sectional area less than the sealing cross-sectional area of have jurisdiction over, and pressure action power makes progress at this moment, and the difference of cross-sectional area is little must be many more, and the pressure action power that makes progress is big more.Obvious first kind of situation bottom sealing socket identical with the pressure action force direction from gravity, sealing force greater than seal receptacle from gravity; Second be deeply in love condition lower seal power just seal receptacle from gravity; And the 3rd be deeply in love condition to press down the direction of pretending firmly with from gravity opposite, sealing force less than seal receptacle from gravity.From concrete application point, because the pressure of the interior oil gas of oil tank is big more in the charge of oil process, it is also big more to reach the required sealing force of identical seal request, therefore, more satisfactory is, the extrusome cross-sectional area of closure mechanism is more than or equal to the sealing cross-sectional area of having jurisdiction over, and the extrusome cross-sectional area that is more preferably closure mechanism is greater than sealing the cross-sectional area of having jurisdiction over, oil gas pressure is big more like this, and sealing force is also just big more.Because of two kinds of power that act on the seal receptacle all are derived from closure mechanism self, but not apply, so people of the present invention claims this sealing means to be the sealing of self sealss power by the external world.Sealing force is only relevant with oil gas pressure after the construction parameter of closure mechanism is determined, adopting self sealss power to seal can be according to seal request, the characteristic of leakproofing material, sealing surface to the requirement of sealing force and jar in combined factors such as oil gas pressure determine the size of suitable seal receptacle weight, extrusome cross-sectional area and the sealing cross-sectional area of having jurisdiction over.
In the charge of oil process, the pressure of oil gas equally also can also and then to the charge of oil pipe produce a thrust that makes progress to top board in the closure mechanism cavity, thrust magnitude is to be connected the cross-sectional area of the extrusome on the top board and the product of oil gas pressure, this thrust has several kilograms to tens kilograms usually, this just means if this thrust of overbalance, and oil filling riser will need additionally to apply one several kilograms to tens kilograms external force downwards.Obvious optimal scheme be with this thrust-balancing to oil tank.The present invention realizes this purpose by hooking device.The top of hooking device is connected on the top board, and when charge of oil, oil tank can be hooked in the bottom and the upwards thrust that will act on the top board is delivered on the oil tank, and after charge of oil finishes, the compression extrusome, the bottom can be thrown off with oil tank again.Hooking device can be located at the outside of closure mechanism, and the correct position with the outside of hooking charge of oil mouth or tank body also can pass top board, is arranged on the cavity inboard of closure mechanism, hooks the correct position of charge of oil mouth or oil tank inboard.Strike sparks for avoiding coming in contact collision with the charge of oil mouth of carbon steel, from the security standpoint consideration, non-metals or other non-metallic material of not striking sparks when the material of the parts of hooking device and charge of oil mouth contact portion is preferably and collides with carbon steel.The quantity of the hooking device of closure mechanism is at least 1, is preferably 2.
Connect top board and the radical function of the extrusome of seal receptacle and be that to make between the top board that is fixed on the charge of oil pipe and the seal receptacle be not hard the connection, but can be as required, what allow that phase mutual edge distance between the two stretches within the specific limits is flexible coupling.After seal receptacle is in place, top board need be pressed down generation to bottom offset, so that the hook of hooking device can hook charge of oil mouth or tank deck, at this moment extrusome is compressed; And after the charge of oil process begins, seal receptacle forms sealing stably and between the charge of oil mouth, and jar internal pressure acts on the upwards thrust that produces on the top board, and it is a certain amount of to top offset that top board is produced, at this moment extrusome is stretched, and the hook that moves the interlock hooking device on the top board hooks charge of oil mouth or tank deck.The above-mentioned functions of extrusome has not only guaranteed the realization of self-sealing function, can also eliminate the vibration of charge of oil pipe in the charge of oil process or be offset influence to sealing effectiveness slightly.The structure of extrusome can be the various circular structures that are compressed and stretch.The material of extrusome should satisfy airtight and fuel resistance, durability requirement.The material of extrusome can be leather, oil proof rubber, fabric, plastics or metal etc.
The radical function of seal receptacle is the sealing that realizes between closure mechanism and the charge of oil mouth.The structure of seal receptacle mainly is made up of attached to the annular sealing member on the skeleton a ring skeleton and one, and the top of skeleton is connected with the bottom end seal of extrusome, and sealing member is fixed on the below of skeleton.Different according to the sealing means between seal receptacle and the charge of oil mouth, skeleton can have different structural shapes with sealing member.Sealing means can be face seal or sphere linear sealing or conical surface linear sealing between seal receptacle and the charge of oil mouth, and face seal wherein can be divided into planar line sealing and plane face sealing again.The sealing of said planar line is meant, the side of the top of the sealing member of seal receptacle and charge of oil mouth among the two is annular plane structure, and the opposing party is the annular surface structure, as " O " the annular surface structure etc. of type circle or domestic train tank car charge of oil mouth apical margin; Said plane face sealing is meant that the part that is in contact with one another of the end face of sealing member and charge of oil mouth is annular plane structure, forms face sealing between sealing member and the charge of oil mouth end face; Said sphere linear sealing is meant that at the sealing position of sealing member and charge of oil mouth, the outer surface portion of sealing member is divided into spherical structure, forms linear sealing between the top inner edge of sealing member and charge of oil mouth; Said conical surface linear sealing is meant that at the sealing position of sealing member and charge of oil mouth, the outer surface portion of sealing member is divided into cone structure, forms linear sealing between the top inner edge of sealing member and charge of oil mouth.For realizing the excellent sealing between sealing member and the charge of oil mouth, the material of sealing member preferably has the elastic body of better elastic, good air-tightness, oil resistant, long service life.As various oil resistant bipeltates, oil proof rubber, oil resistant foamed plastic, oil resistant plastics, fabric, leather etc.
The alignment device that has bit function preferably is set on the closure mechanism.Alignment device can be fixed on the charge of oil pipe or the top board below, the profile of alignment device is cylindrical or other has the structural shape of identical function, its external diameter is slightly less than charge of oil mouth internal diameter, when closure mechanism is in place, alignment device can easily be inserted the charge of oil mouth, alignment device is set both can have guaranteed accurately contraposition between the sealing member of closure mechanism and the charge of oil mouth, can keep the vertical of charge of oil pipe again, thereby guarantee good sealing.Certainly realize the alignment device of bit function is not limited to the said structure pattern, be fixed on the top board below, can entangle the alignment device of the outer rim of charge of oil mouth, or other can realize that closure mechanism can achieve the above object equally to the alignment device of bit function.Because alignment device may bump with the charge of oil mouth, the material of alignment device and charge of oil mouth contact portion preferably adopts non-metals or non-metallic material.
The oil gas that the tank wagon that closure mechanism of the present invention both can be used for top filling also can be used for the train tank car of top filling reclaims, not only can be installed on the newly-built oil filling riser, also can be installed on the existing common oil filling riser, make common oil filling riser have the function of airtight charge of oil, this can save a large amount of investments for the enterprise that will be airtight charge of oil system with the existing unlimited charge of oil system reform.
Below be two embodiment that propose for the ease of understanding method of the present invention and principle.Need to prove that embodiment just is used for explaining method of the present invention and principle, scope of the present invention can not be understood that to only limit to present embodiment.
Description of drawings
Figure-1 is a scheme drawing that is used for the closure mechanism embodiment of tank wagon oil gas recovery.
Figure-2 is scheme drawings that are used for the closure mechanism embodiment of train tank car oil gas recovery.
The specific embodiment
1. the closure mechanism embodiment that reclaims of tank wagon oil gas
Figure-1 signal be the charge of oil mouth (19) that an oil-gas recovery sealing mechanism (1) on the charge of oil pipe (2) that is installed in the tank wagon loading arm inserts the oil tank (21) of tank wagon, form the structural representation of airtight charge of oil system, its left-half is the section-drawing of closure mechanism, and right half part is the outside drawing of closure mechanism.The circular top plate of closure mechanism (3) is folded by the butt flange of the first half of charge of oil pipe (2) (2-1) and the latter half (2-2), is vertically fixed on the charge of oil pipe (2), has exhausr port (18) on the top board (3).The seal receptacle (5) that is positioned at the below of top board (3) is made of the metallic framework (6) of annular arrangement and the sealing member (7) that sticks to the skeleton bottom.The extrusome (4) that connects top board (3) and seal receptacle (5) is made by justifying the annular arrangement leather that is bonded in together in two, the first half cylindrical of extrusome is connected with top board (3) by pressure ring (9-1), and the latter half cylindrical is connected with seal receptacle (5) by pressure ring (9-2).On the charge of oil pipe (2) of seal receptacle (5) below, fixedly mounting the first half is the cylindrical structural that external diameter is slightly less than charge of oil mouth (19) internal diameter, and the latter half is the registration device (8) of truncated cone-shaped structure.The top that is located at two hooking devices (10) of charge of oil mouth both sides external symmetrically is connected on the top board (3) by " U " support (11), the top of hook bar (14) can rotate around axle (13), the position-limited lever (12) that is located on the support (11) is used for limiting the angle that hook bar (14) rotates up, and be fixed on retaining stake (15) on hook bar (14) when contacting with the outer rim of top board (3), can limit and link up with the angle that bar (14) is rotated down.Be welded on the bottom surface that the triangle hook (16) of hook bar (14) bottom can hook charge of oil mouth top flange (22) when in place, the hypotenuse of triangle hook (16) can be a straight flange, it also can be a curved side, adopt the benefit of curved side to be, when closure mechanism (1) vertically inserts the charge of oil mouth, the slope of the outer rim contact point of curved side and charge of oil mouth top flange (22) remains a fixing angle, so that closure mechanism (1) inserts in the process of charge of oil mouth, hook (16) can successfully open laterally.In fact, the concrete structure pattern of hooking device can have a variety of, is connected on the top board, and the hooking device that can hook and throw off other pattern of charge of oil mouth easily can be realized purpose of the present invention too." O " type circle (20) that is installed on tank car charge of oil mouth top flange (22) end face has two functions, and during airtight charge of oil, " O " type circle (20) contacts with sealing member (7) and forms linear sealing and can prevent that oil gas from leaking; During the tank wagon walking, the seal cover cap on the charge of oil mouth (not drawing among the figure) covers the charge of oil mouth, and " O " type circle (20) can prevent that with the linear sealing that seal cover cap forms the oil in the oil tank from spilling from the charge of oil mouth.Be used for surveying the liquid level of oil tank when passing liquid-level probe (17) charge of oil of top board (3) hermetically, to prevent the liquid level superelevation.
It is preceding not insert charge of oil mouth (19) at charge of oil pipe (2), and the hooking device of closure mechanism both sides (10) is (as hooking device residing state in right side among the figure) in the raw, and seal receptacle (5) is seated on the registration device (18), and at this moment, extrusome (4) is stretched.During the charge of oil operation, what at first insert tank car charge of oil mouth (19) is charge of oil pipe (2), registration device (8) inserts thereupon, when registration device (8) inserts certain depth, the curved side of the hook of both sides hooking device (16) touches the top outer rim of tank car charge of oil mouth top flange (22), the rotating element of hooking device (comprises hook bar (14), retaining stake (15) and hook (16)) outwards open immediately, charge of oil pipe (2) is when further inserting, the sealing member (7) of seal receptacle (5) touches " O " type circle (20) on charge of oil mouth top flange (22) end face, when charge of oil pipe (2) further inserts again, extrusome (4) is compressed, when extrusome (4) is compressed to a certain degree, the top of hook (16) curved side slips over the outer rim of charge of oil mouth top flange (22), the rotating element of hooking device falls after rise rapidly, when falling to retaining stake (15) touches the outer rim of top board (3), falling stops, at this moment, the hook of hooking device (16) arrives the position (position of state of nature just) that can hook charge of oil mouth top flange (22) bottom, so far, the process in place of charge of oil pipe and closure mechanism finishes.After this begin charge of oil.During charge of oil, oil product enters oil tank along the direction shown in the arrow (23) from charge of oil pipe (2), along with oil product enters oil tank, gas-phase space in the oil tank is compressed, pressure in the oil tank is increased, pressure action is on the bottom surface of top board (3), top board is produced thrust upwards, the upward reaction force that produces when oil product enters oil tank in addition, promoting charge of oil pipe and the whole closure mechanism except that seal receptacle (5) moves up, hook charge of oil mouth top flange (22) when bottom when moving on the hook (16) of hooking device, the displacement that makes progress stops, and the thrust that makes progress is passed on the tank car charge of oil mouth.Because the Telescopic of extrusome (4), be seated on the charge of oil mouth to seal receptacle (5) all-the-time stable, the application force that acts on the linear sealing that forms between " O " type circle (20) of the sealing member (7) of seal receptacle and charge of oil mouth has two, the one, seal receptacle (5) from gravity, the 2nd, the oil gas pressure action is connected the application force on the annulus area of the long-pending difference of the long-pending circular cross section of being had jurisdiction over " O " type circle (20) of circular cross section that seal receptacle (5) locates at extrusome (4), the sealing force that the combined action of these two power forms has guaranteed that oil gas can be from sealing to external leakage.The exhausr port (18) that the nearly all oil gas that produces in the charge of oil process all passes through closure mechanism is drained into special device for recovering oil and gas along the direction shown in the arrow (24) and is focused on.If quantitatively the charge of oil system breaks down, superelevation appears in the interior liquid level of jar during charge of oil, after liquid-level probe (17) detects liquid level signal, cuts off fuel feeding immediately by control system, thereby avoids because of excessive charge of oil the jar that overflows taking place.After the charge of oil process finishes, following coping (3), extrusome (4) is compressed, throw off hook (16) and charge of oil mouth top flange (22) bottom surface, at this moment, the rotating element of the hooking device of both sides is outwards opened, mention charge of oil pipe and whole closure mechanism, whole charge of oil operating process finishes.The effect of the position-limited lever that is provided with on the hooking device (12) is that the rotating element of restriction hooking device excessively rotates up when outwards opening, so that the rotating element that makes hooking device is before next charge of oil operation beginning, all the time in the raw.
2. the closure mechanism embodiment that reclaims of train tank car oil gas
What figure-2 illustrated is the charge of oil mouth (42) that an oil-gas recovery sealing mechanism (30) that is installed on the train tank car charge of oil pipe (31) inserts the oil tank (43) of train tank car, form the structural representation of airtight charge of oil system, its left-half is the section-drawing of closure mechanism, and right half part is the outside drawing of closure mechanism.The circular top plate of closure mechanism (32) is folded by the butt flange of the first half of charge of oil pipe (31) (31-1) and the latter half (31-2), is vertically fixed on the charge of oil pipe (31), has exhausr port (41) on the top board (32).The seal receptacle (34) that is positioned at top board (32) below is made of skeleton (35) and sealing member (36), skeleton wherein (35) is by three part be combined intos, the top is a circular ring structure, be that an external diameter is slightly less than the columnar structured of charge of oil mouth (42) internal diameter below the annulus, foot is a truncated cone-shaped bucket body structure.The extrusome (33) that connects top board (32) and seal receptacle (34) is made by justifying the annular arrangement leather that is bonded in together in two, the first half cylindrical of extrusome is connected with top board (32) by pressure ring (40-1), and the latter half cylindrical is connected with seal receptacle (34) by pressure ring (40-2).A cylindrical shape positioning tube (37) is being fixed in inboard at top board (32) below extrusome, and the external diameter of positioning tube is slightly less than seal receptacle (34) top internal radius, and outer lower end is fixing one can hold the annulus of seal receptacle (34).In fact, in the present embodiment, the columnar structured common registration device that constitutes closure mechanism of positioning tube (37) and seal receptacle skeleton (35) bottom.Certainly adopt seal receptacle structure identical and identical positioning device structure also can reach identical purpose with embodiment 1.Two hooking devices (38) that are located at charge of oil mouth inboard pass top board (32) hermetically, and its bottom is for hooking the hook of oil tank (43) inner tip, and the top is a rotary handle.The curved surface loop configuration on tank car charge of oil mouth (42) top has two functions, and during airtight charge of oil, the charge of oil mouth contacts the formation linear sealing with sealing member (36) can prevent that oil gas from leaking; When slot train garage was walked, the seal cover cap on the charge of oil mouth (not drawing among the figure) covered the charge of oil mouth, and the linear sealing that the rubber pad on charge of oil mouth and the seal cover cap forms can prevent that the oil in the oil tank from spilling from the charge of oil mouth.Be used for surveying the liquid level of oil tank when passing liquid-level probe (39) charge of oil of top board (32) hermetically, to prevent the liquid level superelevation.
It is preceding not insert charge of oil mouth (42) at charge of oil pipe (31), two hooking devices (38) of closure mechanism are turned to inboard (shown in the hooking device on figure right side), at this moment, seal receptacle (34) is seated on the annulus of positioning tube (37) bottom, and extrusome (33) is stretched.During the charge of oil operation, what at first insert tank car charge of oil mouth (42) is charge of oil pipe (31), and the shell portion of seal receptacle (34) inserts thereupon, when sealing member (36) touches charge of oil mouth top, seal receptacle (34) is in place, when charge of oil pipe (31) further inserted again, extrusome (33) was compressed, when extrusome (33) when being compressed to the end, rotary handle, make hooking device (38) turn to the outside (shown in the hooking device in figure left side), so far, the process in place of charge of oil pipe and closure mechanism finishes.After this begin charge of oil.During charge of oil, oil product enters oil tank along the direction shown in the arrow (44) from charge of oil pipe (31), along with oil product enters oil tank, gas-phase space in the oil tank is compressed, pressure in the oil tank is increased, pressure action is on the bottom surface of top board (32), top board is produced thrust upwards, the upward reaction force that produces when oil product enters oil tank in addition, promoting charge of oil pipe and the whole closure mechanism except that seal receptacle (34) moves up, when on move to hooking device (38) hook when hooking oil tank (43) inner tip, the displacement that makes progress stops, the thrust that makes progress is passed on the oil tank.Because the Telescopic of extrusome (33) is seated on the charge of oil mouth to seal receptacle (34) all-the-time stable.The application force that acts on the linear sealing that forms between the sealing member (36) of seal receptacle and the charge of oil mouth has two, the one, seal receptacle (34) from gravity, the 2nd, the oil gas pressure action extrusome (33) be connected that circular cross section that seal receptacle (34) locates is long-pending and the annulus area of the difference that charge of oil mouth circular cross section is long-pending on application force, the sealing force that the combined action of these two power forms has guaranteed that oil gas can be from sealing to external leakage.The exhausr port (41) that the nearly all oil gas that produces in the charge of oil process all passes through closure mechanism is drained into special device for recovering oil and gas along the direction shown in the arrow (45) and is focused on.If quantitatively the charge of oil system breaks down, superelevation appears in the interior liquid level of jar during charge of oil, after liquid-level probe (39) detects liquid level signal, cuts off fuel feeding immediately by control system, thereby avoids because of excessive charge of oil the jar that overflows taking place.After the charge of oil process finishes, following coping (32), extrusome (33) is compressed, hooking device (38) bottom hook is thrown off tank deck, at this moment, and the handle of Rotary hanging hook device, two hooking devices are turned to the inboard, mention charge of oil pipe and whole closure mechanism, whole charge of oil operating process finishes.
Claims (9)
1. on the charge of oil pipe that is fixedly mounted on loading arm, the oil-gas recovery sealing mechanism that has level measurement probe and exhausr port, it is characterized in that: have one to be fixed on the charge of oil pipe, have the circular top plate of exhausr port above, level measurement probe passes top board hermetically, a ring sealing base that is positioned under the top board, be tightly connected with a upper end and top board, the annular extrusome that lower end and seal receptacle are tightly connected, the three surrounds and forms a seal chamber, seal chamber is communicated with the gas-phase space of oil tank, by the sealing that forms between seal receptacle and the oil tank charge of oil mouth oil gas is not leaked, a registration device that is fixed on charge of oil pipe or the top board is arranged, so that make the seal receptacle of closure mechanism when contacting, be in suitable position with the charge of oil mouth, have at least one group of upper end to be articulated on the top board and the hooking device of oil tank can be hooked or throw off in the lower end, utilize hooking device hook oil tank with the force transmission of oil gas pressure action on the closure mechanism top board to oil tank, the realizable force self-balancing, thereby do not need oil filling riser that extra downward thrust is provided, with seal receptacle from gravity and oil gas pressure action seal receptacle up and down the application force on the annulus area of the difference of cross-sectional area make a concerted effort realize the sealing of self sealss power as sealing force.
2. equipment according to claim 1 is characterized in that: the cross-sectional area of the extrusome of closure mechanism is more than or equal to the sealing cross-sectional area of having jurisdiction over.
3. equipment according to claim 1 is characterized in that: the sealing means between sealing member and the charge of oil mouth is the planar line sealing.
4. equipment according to claim 1 is characterized in that: the sealing means between sealing member and the charge of oil mouth is the plane face sealing.
5. equipment according to claim 1 is characterized in that: the sealing means between sealing member and the charge of oil mouth is the sphere linear sealing.
6. equipment according to claim 1 is characterized in that: the sealing means between sealing member and the charge of oil mouth is a conical surface linear sealing.
7. equipment according to claim 1 is characterized in that: the structure of seal receptacle mainly is made up of attached to the annular sealing member on the skeleton a ring skeleton and one.
8. equipment according to claim 7, it is characterized in that: the material of sealing member is the elastic body with better elastic, good air-tightness, oil resistant, long service life, as various oil resistant bipeltates, oil proof rubber, oil resistant foamed plastic, oil resistant plastics, fabric, leather etc.
9. equipment according to claim 1 is characterized in that: the quantity of the hooking device of closure mechanism is 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410094827 CN1775652A (en) | 2004-11-15 | 2004-11-15 | Oil-gas recovery sealing mechanism for top loading-unloading liquid hydrocarbon product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410094827 CN1775652A (en) | 2004-11-15 | 2004-11-15 | Oil-gas recovery sealing mechanism for top loading-unloading liquid hydrocarbon product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1775652A true CN1775652A (en) | 2006-05-24 |
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ID=36765397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410094827 Pending CN1775652A (en) | 2004-11-15 | 2004-11-15 | Oil-gas recovery sealing mechanism for top loading-unloading liquid hydrocarbon product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1775652A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101837939A (en) * | 2009-07-17 | 2010-09-22 | 张化雷 | Multifunction multi-airbag leakage-free gas recycling closed tank car cover plate device |
| CN109353982A (en) * | 2018-11-30 | 2019-02-19 | 连云港华泰石油化工机械有限公司 | Oil filling riser sealing clamp and clamping means with handoff functionality |
| CN115504427A (en) * | 2022-11-24 | 2022-12-23 | 隆讯汽车智能科技(山东)有限公司 | Sealed loading and unloading device for crude oil tank truck |
-
2004
- 2004-11-15 CN CN 200410094827 patent/CN1775652A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101837939A (en) * | 2009-07-17 | 2010-09-22 | 张化雷 | Multifunction multi-airbag leakage-free gas recycling closed tank car cover plate device |
| CN109353982A (en) * | 2018-11-30 | 2019-02-19 | 连云港华泰石油化工机械有限公司 | Oil filling riser sealing clamp and clamping means with handoff functionality |
| CN109353982B (en) * | 2018-11-30 | 2024-05-24 | 连云港华泰石油化工机械有限公司 | Crane tube sealing and clamping device with switching function and clamping method |
| CN115504427A (en) * | 2022-11-24 | 2022-12-23 | 隆讯汽车智能科技(山东)有限公司 | Sealed loading and unloading device for crude oil tank truck |
| CN115504427B (en) * | 2022-11-24 | 2023-02-07 | 隆讯汽车智能科技(山东)有限公司 | Sealed loading and unloading device for crude oil tank truck |
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Open date: 20060524 |