CN110131453B - Positive and negative pressure backflow liquid seal safety breather valve - Google Patents
Positive and negative pressure backflow liquid seal safety breather valve Download PDFInfo
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- CN110131453B CN110131453B CN201910503207.3A CN201910503207A CN110131453B CN 110131453 B CN110131453 B CN 110131453B CN 201910503207 A CN201910503207 A CN 201910503207A CN 110131453 B CN110131453 B CN 110131453B
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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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/18—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on either side
- F16K17/19—Equalising valves predominantly for tanks
- F16K17/192—Equalising valves predominantly for tanks with closure member in the form of a movable liquid column
Abstract
The invention relates to the field of oil and gas storage and transportation, in particular to a positive-negative pressure backflow liquid seal safety breather valve, which comprises a breather pipe assembly, a liquid separation barrel assembly, a bottom plate assembly, an upper end cover plate assembly and a negative pressure liquid accumulation groove assembly; the upper end cover plate assembly and the bottom plate assembly are respectively fixed at the upper end and the lower end of the negative pressure liquid accumulation tank assembly to form a cavity, the vent pipe assembly penetrates through the bottom plate assembly and the liquid separation tank assembly arranged in the cavity and is fixed on the inner wall of the cavity through the positive pressure liquid accumulation tank bottom plate, and the liquid separation tank assembly penetrates through the positive pressure liquid accumulation tank bottom plate and is communicated with the inner side and the outer side of the liquid separation tank assembly through a plurality of first strip holes arranged on the liquid separation tank assembly. When the positive pressure and the negative pressure are opened, the sealing liquid can be prevented from splashing out of the liquid-sealed safety breather valve to pollute a top platform of the petroleum storage tank when the positive pressure and the negative pressure of the liquid-sealed safety breather valve exceed the limits, and the sealing liquid can automatically flow back into the cavity to repeatedly form a seal function when the positive pressure and the negative pressure exceed the limits.
Description
Technical Field
The invention relates to the field of oil and gas storage and transportation, in particular to a liquid seal safety breather valve which can realize that sealing liquid automatically flows back to an inner cavity through a return pipe structure after positive pressure and negative pressure are started.
Background
The hydraulic safety valve is an important accessory for protecting the safety of a storage tank in an oil storage and transportation system, belongs to the class of automatic valves, and concretely explains the main structure and the use requirements of the traditional hydraulic safety valve by the national standard (SY/T0511.2-2010 oil storage tank accessory part 2: hydraulic safety valve). The traditional hydraulic safety valve and the mechanical breather valve are used together, the opening pressure of the traditional hydraulic safety valve is higher than that of the mechanical breather valve, and therefore the traditional hydraulic safety valve is not opened when the mechanical breather valve works normally, and a second protection effect is achieved. The traditional hydraulic safety valve is usually arranged at the top of the oil tank and used for replacing a mechanical breather valve to realize the breathing function of the oil tank when the mechanical breather valve fails.
The traditional hydraulic safety valve for the containers such as the oil tank at present, because inner structure sets up the reason, when the malleation is opened, outside the jar internal pressure was pressed the hydraulic safety valve internal seal hydraulic pressure out valve, when the negative pressure was opened, sealed liquid was discharged in the jar to open the passageway of ventilating and realize ventilating, the back passageway keeps the long-distance state to lose sealing function outside being pressed the valve or discharging in the jar when sealed liquid, needs the manual work to complement sealed liquid again, and maintenance work volume is huge. Meanwhile, after the sealing liquid in the valve is partially lost, the opening pressure of the traditional hydraulic safety valve is reduced, and the traditional hydraulic safety valve is opened before the breather valve is opened, so that the sealing pressure of the oil tank is reduced, and the leakage amount is increased. Moreover, the sealing liquid directly splashed to the top platform of the oil storage tank can cause environmental pollution and safety problems, the sealing liquid discharged into the tank can pollute the storage medium in the tank, and much inconvenience is brought to the maintenance and operation of an oil storage tank system.
In conclusion, the traditional hydraulic safety valve has the problems of reduced opening pressure caused by sealing liquid loss, large maintenance amount, unknown running state, environmental pollution and the like due to functional positioning and structural reasons. The main defects of the traditional hydraulic safety valve are that the prior patent realizes the in-valve collection and backflow of sealing liquid by arranging a positive pressure liquid collecting tank and arranging a plurality of oil return holes at the bottom of the tank, but because a ventilation channel is adopted as a backflow channel, the sealing liquid and air flow are mixed and carried, and the problems of sealing liquid loss and splashing cannot be fundamentally solved.
Disclosure of Invention
The invention aims to provide a positive-negative pressure backflow liquid seal safety breather valve to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a positive and negative pressure backflow liquid seal safety breather valve comprises a breather pipe assembly, a liquid isolation barrel assembly, a bottom plate assembly, an upper end cover plate assembly and a negative pressure liquid accumulation groove assembly; the upper end cover plate assembly and the bottom plate assembly are respectively fixed at the upper end and the lower end of the negative pressure liquid accumulation groove assembly to form a cavity, the vent pipe assembly runs through the bottom plate assembly and the liquid separation barrel assembly arranged in the cavity and is fixed on the inner wall of the cavity through the positive pressure liquid accumulation groove bottom plate, the liquid separation barrel assembly runs through the positive pressure liquid accumulation groove bottom plate and is fixed on the inner wall of the cavity through a plurality of first holes arranged on the liquid separation barrel assembly, the first holes can be holes in any shapes and are communicated with the inner side and the outer side of the liquid separation barrel assembly, the vent pipe assembly is communicated with the inner side of the negative pressure liquid accumulation groove assembly, the inner side of the negative pressure liquid accumulation groove assembly is communicated with the inner side of the liquid separation barrel assembly, the communication position is located at the lower end of the inner side of the negative pressure liquid accumulation groove assembly, and when positive pressure and.
As a further scheme of the invention: the breather pipe assembly comprises a breather pipe, a ventilation extension pipe and a return pipe, the breather pipe penetrates through the positive pressure liquid accumulation tank bottom plate and is communicated with the ventilation extension pipe, one end, away from the breather pipe, of the ventilation extension pipe is installed on the positive pressure liquid accumulation tank bottom plate, a positive pressure liquid accumulation tank baffle is fixed in the middle of the ventilation extension pipe, the lower end of the positive pressure liquid accumulation tank baffle is provided with the lower edge of the positive pressure liquid accumulation tank baffle, and the height of the positive pressure liquid accumulation tank baffle from the positive pressure liquid accumulation tank bottom plate is 100-300 mm.
As a still further scheme of the invention: the positive pressure liquid accumulation tank bottom plate is provided with a hole used for being inserted into the return pipe, the upper end face of the hole and the upper end opening face of the return pipe are located on the same horizontal plane, the positive pressure liquid accumulation tank bottom plate is further provided with a hole used for enabling the liquid adding pipe to penetrate through the hole, and the liquid adding pipe is fixedly connected with the inner wall of the hole.
As a still further scheme of the invention: the liquid separation barrel assembly comprises a liquid separation barrel, the liquid separation barrel is installed on a bottom plate assembly through liquid separation barrel supporting legs, a plurality of semicircular small holes are formed in the bottom of the liquid separation barrel and used for communicating the inner side of the liquid separation barrel with the inner side of a negative pressure liquid accumulation groove assembly, a plurality of first strip holes which are not selectively arranged or are selectively arranged on the side wall of the liquid separation barrel are located above a positive pressure liquid accumulation groove bottom plate, the bottom of each first strip hole and the upper end face of the positive pressure liquid accumulation groove bottom plate are located on the same horizontal plane, a flow shielding plate is fixed on the outer wall of the liquid separation barrel below the positive pressure liquid accumulation groove bottom plate, the lower end of the flow shielding plate is fixed with a lower edge of the flow shielding plate, and a plurality of holes which are used for a liquid feeding pipe and a backflow pipe to penetrate through.
As a still further scheme of the invention: the bottom plate assembly comprises a bottom plate and a liquid discharge pipe, the bottom plate is arranged in a circular ring structure, the breather pipe assembly penetrates through the inner ring of the bottom plate and is fixedly connected with the bottom plate, a liquid discharge hole used for being connected with the liquid discharge pipe is formed in the bottom plate, a ball valve is installed at one end, far away from the bottom plate, of the liquid discharge pipe, the liquid discharge pipe penetrates through the bottom plate, and an upper end face of the liquid discharge pipe and an upper end face of the bottom plate are located on the.
As a still further scheme of the invention: the upper end cover plate assembly comprises a top cover and a positive pressure liquid accumulation groove side wall, the upper end and the lower end of the positive pressure liquid accumulation groove side wall are respectively fixedly connected with the top cover and the negative pressure liquid accumulation groove assembly, a through hole used for communicating a flame arrester structure is formed in the positive pressure liquid accumulation groove side wall, a flame arrester spoiler is arranged on the positive pressure liquid accumulation groove side wall and in the position symmetrical to the flame arrester structure through the through hole, the lower end of the flame arrester spoiler passes through the inner wall fixed connection of a baffle plate and the positive pressure liquid accumulation groove side wall under the flame arrester spoiler, a maintenance hole sealed through a maintenance hole cover plate is formed in the top cover, a liquid adding hole used for inserting a liquid adding pipe in a penetrating mode is further formed in the top cover, and.
As a still further scheme of the invention: negative pressure hydrops groove assembly includes lateral wall board, negative pressure hydrops groove bottom plate and negative pressure hydrops groove lateral wall, the last lower extreme of negative pressure hydrops groove lateral wall respectively with the lower tip of upper cover plate assembly, negative pressure hydrops tank bottom plate fixed connection, the lateral wall board runs through negative pressure hydrops groove bottom plate, and the lower extreme is fixed with the bottom plate assembly, the lateral wall upper end of lateral wall board is provided with second type hole, and second type hole can be the hole of arbitrary shape, and second type hole is located the upper end of negative pressure hydrops groove bottom plate, and the bottom in second type hole is in on the same horizontal plane with the up end of negative pressure hydrops tank bottom plate.
As a still further scheme of the invention: the negative pressure liquid accumulation tank is characterized in that a liquid discharge hole communicated with a liquid discharge pipe is formed in the bottom plate of the negative pressure liquid accumulation tank, a ball valve is installed at one end, away from the bottom plate of the negative pressure liquid accumulation tank, of the liquid discharge pipe, a balance hole is formed in the side wall of the negative pressure liquid accumulation tank, the balance hole is communicated with an emptying pipe, and one end, away from the side wall of the negative pressure liquid accumulation tank, of the emptying pipe is connected with a plug.
As a still further scheme of the invention: the liquid level meter is characterized by further comprising a magnetostrictive liquid level meter component, wherein the magnetostrictive liquid level meter component penetrates through a liquid level meter slot hole formed in the top cover and is inserted into a liquid level meter slot formed in the inner side of the overnight barrel.
As a still further scheme of the invention: the magnetostrictive liquid level meter assembly comprises a magnetostrictive liquid level meter, a magnetostrictive liquid level meter bottom plate and a magnetostrictive liquid level meter fixing plate, the magnetostrictive liquid level meter bottom plate is a thin plate which is provided with a hole in the middle and can be placed in a liquid level meter groove, the magnetostrictive liquid level meter bottom plate is fixed at the bottom of the magnetostrictive liquid level meter through a bolt, and the magnetostrictive liquid level meter fixing plate is a square or round thin plate, is connected with the magnetostrictive liquid level meter and is connected to a top cover through a bolt.
Compared with the prior art, the invention has the beneficial effects that: the invention has novel design, can prevent sealing liquid from splashing out of the liquid-sealed safety breather valve when the positive pressure and the negative pressure of the liquid-sealed safety breather valve exceed the time limit to pollute a top platform of the petroleum storage tank when the positive pressure and the negative pressure are opened, has the function of automatically resetting when the positive pressure and the negative pressure exceed the time limit, can recycle the sealing liquid and greatly reduce the maintenance amount, and has simple structure and convenient cleaning and maintenance; the positive pressure liquid accumulation disc changes the sealing liquid collection mode of the traditional hydraulic safety valve, fully utilizes the valve body structure and reduces the volume of the valve body; the invention discloses the return pipe arranged between the positive pressure liquid accumulation disc and the valve bottom plate, and the independent arrangement of the ventilation channel and the return channel is realized through the return pipe, so that the splashing of sealing liquid is greatly reduced; the liquid blocking structure of the sealing liquid baffle is invented, so that the internal circulation of the sealing liquid valve is ensured not to splash under normal ventilation; compared with the traditional hydraulic safety valve structure arrangement mode recommended by the national standard, the novel structure with the external negative pressure cavity and the internal positive pressure cavity is invented, and the volume of the liquid seal safety breather valve can be greatly reduced; the negative pressure liquid accumulation cavity is arranged on the outer side of the negative pressure cavity and used for realizing sealing liquid loading when air suction is carried out after the negative pressure overpressure opening, and the negative pressure liquid accumulation cavity is provided with a plurality of holes for realizing an automatic sealing liquid backflow structure after the negative pressure overpressure recovery; the liquid level meter for measuring the liquid level height in the U-shaped cavity is arranged, so that the state monitoring and liquid shortage alarming of the liquid seal safety breather valve are realized, and the active all-weather monitoring and trend recording of the working state of the liquid seal safety breather valve are realized; by the aid of the technical principle of liquid return of the return pipe, the technical principle of automatic liquid return of the negative-pressure liquid accumulation groove, the baffle structure and the valve state active detection, internal circulation of sealing liquid is free of splashing, complete sealing and zero leakage in a non-breathing state are achieved, problems of micro leakage, opening faults and the like of a traditional mechanical breather valve are fundamentally solved, the sealing effect is good, opening pressure and equivalent return pressure are accurate, the traditional mechanical breather valve can be replaced or used in parallel, and the application prospect is extremely wide.
Drawings
Fig. 1 is a schematic structural diagram of a positive-negative pressure backflow liquid seal safety breather valve.
Fig. 2 is a cross-sectional view of the liquid-tight safety breather valve with positive and negative pressure backflow.
Fig. 3 is a front view of the vent pipe assembly in the liquid-tight safety breather valve with positive and negative pressure backflow.
Fig. 4 is a top view of the vent tube assembly in the positive and negative pressure backflow liquid seal safety breather valve.
Fig. 5 is a schematic structural diagram of a front view of a liquid separating barrel assembly in the liquid-sealed safety breather valve with positive and negative pressure backflow.
Fig. 6 is a schematic structural diagram of what is a top view of a liquid barrel assembly in the liquid-sealed safety breather valve with positive and negative pressure backflow.
Fig. 7 is a schematic structural diagram of a front view of a baseplate assembly in the liquid-tight safety breather valve with positive and negative pressure backflow.
Fig. 8 is a schematic structural diagram of what is a top view of a base plate assembly in the liquid-tight safety breather valve with positive and negative pressure backflow.
Fig. 9 is a front view of the upper end cover plate assembly in the liquid-tight safety breather valve with positive and negative pressure backflow.
Fig. 10 is a top view of the upper end cover plate assembly in the liquid-tight safety breather valve with positive and negative pressure backflow.
FIG. 11 is a front view of the side wall of the positive pressure accumulator tank in the liquid-tight safety breather valve with positive and negative pressure backflow.
FIG. 12 is a top view of the side wall of the positive pressure accumulator tank in the liquid-tight safety breather valve with positive and negative pressure backflow.
FIG. 13 is a schematic structural diagram of a flame arrester spoiler in a positive and negative pressure backflow liquid seal safety breather valve.
Fig. 14 is a front view of the top cover of the liquid-tight safety breather valve with positive and negative pressure backflow.
FIG. 15 is a front view of a negative pressure liquid accumulation tank assembly in the liquid-sealed safety breather valve with positive and negative pressure backflow.
FIG. 16 is a front view of the bottom plate of the negative pressure accumulator tank in the liquid-sealed safety breather valve with positive and negative pressure backflow.
FIG. 17 is a front view of the side wall of the negative pressure accumulator tank in the liquid-sealed safety breather valve with positive and negative pressure backflow.
FIG. 18 is a front view of the side wall plate of the liquid-tight safety breather valve with positive and negative pressure backflow.
Fig. 19 is a front view of a connecting flange in the liquid seal safety breather valve with positive and negative pressure backflow.
FIG. 20 is a front view of the magnetostrictive level gauge assembly in the liquid-tight safety breather valve with positive and negative pressure backflow.
FIG. 21 is a front view of the bottom plate of the magnetostrictive liquid level meter in the liquid-tight safety breather valve with positive and negative pressure backflow.
FIG. 22 is a front view of the magnetostrictive liquid level gauge fixing plate in the liquid-sealed safety breather valve with positive and negative pressure backflow.
Fig. 23 is a schematic view of the positive and negative pressure backflow liquid seal safety breather valve after positive pressure opening and gas flow direction.
Fig. 24 is a schematic view of the gas flow direction after the negative pressure of the liquid-sealed safety breather valve with positive and negative pressure backflow is opened.
Fig. 25 is a schematic view of the sealing liquid circulation flow direction after positive pressure opening of the liquid-sealed safety breather valve with positive and negative pressure backflow.
Fig. 26 is a schematic view of the sealing liquid circulation flow direction after the negative pressure of the liquid-sealed safety breather valve with positive and negative pressure backflow is opened.
In the figure:
1-vent pipe assembly, 11-vent pipe, 12-vent pipe extension pipe, 13-positive pressure hydrops tank bottom plate, 14-liquid feeding pipe, 15-lifting lug, 16-positive pressure hydrops tank baffle, 17-positive pressure hydrops tank baffle lower edge, 18-return pipe, 131-liquid level meter slotted hole.
2-liquid separation barrel assembly, 21-liquid separation barrel, 22-liquid separation barrel supporting leg, 23-baffle plate, 24-baffle plate lower edge, 25-liquid level meter groove, 211-first strip hole.
3-bottom plate assembly, 31-bottom plate, 32-drain pipe, 33-ball valve, 311-drain hole.
4-upper end cover plate assembly, 41-top cover, 42-flame arrester spoiler, 43-lower baffle of flame arrester spoiler, 44-side wall of positive pressure liquid accumulating groove, 45-flame arrester structure, 46-maintenance hole cover plate, 412-liquid adding hole, 413-slotted hole of liquid level meter, 441-through hole and 411-maintenance hole.
5-negative pressure liquid accumulating tank assembly, 51-side wall plate, 52-negative pressure liquid accumulating tank bottom plate, 53-negative pressure liquid accumulating tank side wall, 54-blow-down pipe, 55-liquid discharge pipe, 511-second long hole, 521-liquid discharge hole and 531-balance hole.
6, connecting the flanges.
7-magnetostrictive liquid level meter component, 71-magnetostrictive liquid level meter, 72-magnetostrictive liquid level meter bottom plate and 73-magnetostrictive liquid level meter fixing plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1 to 22, in an embodiment of the present invention, a positive and negative pressure backflow liquid seal safety breather valve includes a breather pipe assembly 1, a liquid separation barrel assembly 2, a bottom plate assembly 3, an upper end cover plate assembly 4, and a negative pressure liquid accumulation tank assembly 5; upper end cover plate assembly 4 and bottom plate assembly 3 are fixed respectively at the upper and lower extreme of negative pressure hydrops groove assembly 5, vacuole formation, breather pipe assembly 1 runs through bottom plate assembly 3 and sets up at the liquid separation bucket assembly 2 in the cavity and fixes on the cavity inner wall through positive pressure hydrops groove bottom plate 13, liquid separation bucket assembly 2 runs through positive pressure hydrops groove bottom plate 13 and communicates in the inside and outside of liquid separation bucket assembly 2 through setting up a plurality of first rectangular holes 211 on liquid separation bucket assembly 2, breather pipe assembly 1 communicates with the inboard of negative pressure hydrops groove assembly 5, and the inboard of negative pressure hydrops groove assembly 5 communicates with the inboard of liquid separation bucket assembly 2, and the intercommunication position all is located the inboard lower extreme of negative pressure hydrops groove assembly 5, and when positive, negative pressure produced, the liquid equilibrium state in liquid separation bucket assembly 2 and the negative pressure hydrops groove assembly 5 changes to can avoid liquid seal safety breather valve positive and negative pressure to spill out the liquid and seal safety breather valve external pollution oil storage tank top platform And has the function of automatic reset when the positive pressure and the negative pressure exceed the limit.
Specifically, the vent pipe assembly 1 includes a vent pipe 11, a vent extension pipe 12 and a return pipe 18, the vent pipe 11 penetrates through the positive pressure liquid accumulation tank bottom plate 13 and is communicated with the vent extension pipe 12, and one end of the vent extension pipe 12 far away from the vent pipe 11 is mounted on the positive pressure liquid accumulation tank bottom plate 13, so as to ensure that the gas in the vent pipe 11 can enter the negative pressure cavity along the vent extension pipe 12.
The lower end of the vent pipe 11 is fixed with a connecting flange 6, and the connecting flange 6 is used for being connected with other flanges, so that the vent pipe 11 is installed.
Preferably, the ventilation extension pipe 12 can be in any shape, and a plurality of ventilation extension pipes are arranged and distributed circumferentially.
Further, a hole for inserting the return pipe 18 is formed in the bottom plate 13 of the positive-pressure accumulated liquid tank, the upper end face of the hole and the upper end opening face of the return pipe 18 are located on the same horizontal plane or extend upwards out of the bottom plate 13 of the positive-pressure accumulated liquid tank, a hole for inserting the liquid adding pipe 14 is further formed in the bottom plate 13 of the positive-pressure accumulated liquid tank, and the liquid adding pipe 14 is fixedly connected with the inner wall of the hole.
Still further, a plurality of positive pressure hydrops groove baffles 16 are fixed in the middle of the ventilation extension pipe 12, and the lower ends of the positive pressure hydrops groove baffles 16 are provided with positive pressure hydrops groove baffle lower edges 17.
In order to increase the stability of the installation of the vent pipe assembly 1, a lifting lug 15 is fixed at the upper end of the vent pipe 11.
It should be noted that the ventilation pipe 11 and/or the ventilation extension pipe 12 are circular pipes or square pipes, but pipes with other shapes may be adopted as long as the working requirements are met, and the application does not limit the present invention.
Specifically, separate liquid bucket assembly 2 including separating bucket 21, separate liquid bucket 21 and install on bottom plate assembly 3 through separating liquid bucket landing leg 22, and separate the bottom of liquid bucket 21 and be provided with a plurality of semi-circular apertures for the inboard of intercommunication separate liquid bucket 21 and the inboard of negative pressure hydrops groove assembly 5, separate the selective a plurality of first type arbitrary shape's that do not set up or set up hole 211 of the lateral wall upside of liquid bucket 21 is located the top of positive pressure hydrops groove bottom plate 13, and the bottom of first type arbitrary shape's hole 211 is in same horizontal plane with the up end of positive pressure hydrops groove bottom plate 13.
Further, a flow shielding plate 23 is fixed on the outer wall of the liquid separation barrel 21 below the bottom plate 13 of the positive pressure liquid accumulation tank, a lower edge 24 of the flow shielding plate is fixed at the lower end of the flow shielding plate 23, and a plurality of holes for penetrating and fixing the liquid feeding pipe 14 and the return pipe 18 are arranged on the flow shielding plate 23.
Specifically, bottom plate assembly 3 includes bottom plate 31 and fluid-discharge tube 32, and bottom plate 31 sets up for the ring structure, and breather pipe assembly 1 runs through the inner ring department of bottom plate 31 and with bottom plate 31 fixed connection, be provided with the outage 311 that is used for connecting fluid-discharge tube 32 on the bottom plate 31, the ball valve 33 is installed to the one end that bottom plate 31 was kept away from to fluid-discharge tube 32, and fluid-discharge tube 32 runs through bottom plate 31 and sets up, and its upper end of port and bottom plate 31 is in same horizontal plane to realize the liquid discharge in the negative pressure hydrops groove assembly 5.
It should be noted that the drain pipe 32 is a straight pipe or a bent pipe, and the specific shape can be set according to the requirement.
Particularly, upper end cover plate assembly 4 includes top cap 41 and positive pressure hydrops groove lateral wall 44, the upper and lower end of positive pressure hydrops groove lateral wall 44 respectively with top cap 41 and 5 fixed connection of negative pressure hydrops groove assembly, be provided with the through-hole 441 that is used for intercommunication flame arrester structure 45 on the positive pressure hydrops groove lateral wall 44, be provided with flame arrester spoiler 42 with flame arrester structure 45 about the symmetrical position department of through-hole 441 on the positive pressure hydrops groove lateral wall 44, the lower extreme of flame arrester spoiler 42 passes through flame arrester spoiler lower baffle 43 and the inner wall fixed connection of positive pressure hydrops groove lateral wall 44.
Preferably, the flame arrestor spoiler 42 is a circular arc-shaped plate.
Furthermore, the top cover 41 is provided with a maintenance hole 411 sealed by the maintenance hole cover plate 46, and a liquid charging hole 412 for inserting and placing the liquid charging pipe 14, and the liquid charging pipe 14 is fixedly connected with the inner wall of the liquid charging hole 412.
Preferably, the maintenance hole cover plate 46 is fixedly connected with the top cover 41 through bolts, so that the disassembly is convenient, and the maintenance treatment is performed on the application.
Specifically, the negative pressure effusion cell assembly 5 comprises a side wall plate 51, a negative pressure effusion cell bottom plate 52 and a negative pressure effusion cell side wall 53, wherein the upper end and the lower end of the negative pressure effusion cell side wall 35 are respectively fixedly connected with the lower end part of the upper cover plate assembly 4 and the negative pressure effusion cell bottom plate 52, the side wall plate 51 penetrates through the negative pressure effusion cell bottom plate 52, and the lower end is fixed with the bottom plate assembly 3.
Further, a second type of hole 511 is formed in the upper end of the side wall plate 51, the second type of hole 511 may be in any shape, the second type of hole 511 is located at the upper end of the bottom plate 52 of the negative pressure liquid accumulating tank, and the bottom end of the second type of hole 511 and the upper end surface of the bottom plate 52 of the negative pressure liquid accumulating tank are located on the same horizontal plane.
Still further, the negative pressure liquid collecting tank bottom plate 52 is provided with a liquid discharging hole 521 communicated with the liquid discharging pipe 55, and one end of the liquid discharging pipe 55 far away from the negative pressure liquid collecting tank bottom plate 52 is provided with a valve 33, so that liquid in the negative pressure liquid collecting tank assembly 5 is discharged.
Example two
The invention further provides another embodiment to improve the application in the specific implementation process, and specifically, the invention further comprises a magnetostrictive liquid level meter assembly 7, wherein the magnetostrictive liquid level meter assembly 7 penetrates through a liquid level meter groove hole 413 arranged on the top cover 41 and is inserted into a liquid level meter groove 25 arranged on the inner side of the overnight barrel 21.
Further, the magnetostrictive liquid level meter assembly 7 comprises a magnetostrictive liquid level meter 71, a magnetostrictive liquid level meter bottom plate 72 and a magnetostrictive liquid level meter fixing plate 73, wherein the magnetostrictive liquid level meter bottom plate 72 is a thin plate which is provided with a hole in the middle and can be placed in the liquid level meter groove 25, the magnetostrictive liquid level meter bottom plate 72 is fixed at the bottom of the magnetostrictive liquid level meter 71 through bolts so as to ensure the installation and the use of the magnetostrictive liquid level meter 71, and the magnetostrictive liquid level meter fixing plate 73 is a square or round thin plate, is connected with the magnetostrictive liquid level meter 71 and is connected to the top cover 41 through bolts.
Referring to fig. 23-26, the present application further provides a flow diagram of the gas and sealing liquid under different working conditions of the present invention for easy understanding.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A positive and negative pressure backflow liquid seal safety breather valve comprises a breather pipe assembly (1), a liquid isolation barrel assembly (2), a bottom plate assembly (3), an upper end cover plate assembly (4) and a negative pressure liquid accumulation tank assembly (5); the upper end cover plate assembly (4) and the bottom plate assembly (3) are respectively fixed at the upper end and the lower end of the negative pressure liquid accumulation groove assembly (5) to form a cavity, and the upper end cover plate assembly (3) and the bottom plate assembly (3) are respectively fixed at the upper end and the lower end of the negative pressure liquid accumulation groove assembly (5) to form the cavity, the ventilating pipe assembly (1) penetrates through the bottom plate assembly (3) and the liquid separation barrel assembly (2) arranged in the cavity and is fixed on the inner wall of the cavity through a positive pressure liquid accumulation groove bottom plate (13), the liquid separation barrel assembly (2) penetrates through the positive pressure liquid accumulation groove bottom plate (13) and is communicated with the inner side and the outer side of the liquid separation barrel assembly (2) through a plurality of first strip holes (211) arranged on the liquid separation barrel assembly (2), the ventilating pipe assembly (1) is communicated with the inner side of the negative pressure liquid accumulation groove assembly (5), the inner side of the negative pressure liquid accumulation groove assembly (5) is communicated with the inner side of the liquid, the liquid balance state in the liquid-proof barrel assembly (2) and the negative pressure liquid accumulation tank assembly (5) changes.
2. The positive-negative pressure backflow liquid seal safety breather valve according to claim 1, wherein the breather pipe assembly (1) comprises a breather pipe (11), a ventilation extension pipe (12) and a backflow pipe (18), the breather pipe (11) penetrates through the positive-pressure liquid accumulation tank bottom plate (13) and is communicated with the ventilation extension pipe (12), one end, far away from the breather pipe (11), of the ventilation extension pipe (12) is installed on the positive-pressure liquid accumulation tank bottom plate (13), a positive-pressure liquid accumulation tank baffle plate (16) is fixed in the middle of the ventilation extension pipes (12), a lower edge (17) of the positive-pressure liquid accumulation tank baffle plate is arranged at the lower end of the positive-pressure liquid accumulation tank baffle plate (16), and the height of the positive-pressure liquid accumulation tank baffle plate (16) from the positive-pressure liquid accumulation tank bottom plate (13) is 100 mm-300 mm.
3. The liquid-sealed safety breather valve with positive and negative pressure backflow according to claim 1, wherein a positive pressure liquid accumulation groove structure is provided for containing sealing liquid during positive pressure expiration, the positive pressure liquid accumulation groove is arranged at the upper end of the liquid separation barrel assembly (2), a plurality of backflow pipes (18) are provided for realizing the backflow of the sealing liquid during positive pressure expiration, a hole for inserting the backflow pipe (18) is formed in the bottom plate (13) of the positive pressure liquid accumulation groove, the upper end face of the hole and the upper end opening face of the backflow pipe (18) are positioned on the same horizontal plane or are higher than a part of the bottom plate (13) of the positive pressure liquid accumulation groove and fixedly connected with the inner wall of the hole in the bottom plate (13) of the positive pressure liquid accumulation groove, a hole for inserting the liquid feeding pipe (14) is further formed in the bottom plate (13) of the positive pressure liquid accumulation groove, and the liquid feeding pipe (14) is fixedly connected with the inner wall of the hole.
4. The liquid-sealed safety breather valve with positive and negative pressure backflow according to claim 2, wherein the liquid-separating barrel assembly (2) comprises a liquid-separating barrel (21), the liquid-separating barrel (21) is mounted on the bottom plate assembly (3) through liquid-separating barrel support legs (22), the bottom of the liquid-separating barrel (21) is provided with a plurality of semicircular small holes for communicating the inner side of the liquid-separating barrel (21) with the inner side of the negative pressure liquid accumulation tank assembly (5), the upper side of the side wall of the liquid-separating barrel (21) is selectively not provided or provided with a plurality of first strip holes (211) above the bottom plate (13) of the positive pressure liquid accumulation tank, the bottom of the first strip holes (211) and the upper end surface of the bottom plate (13) of the positive pressure liquid accumulation tank are positioned on the same horizontal plane, the outer wall of the liquid-separating barrel (21) below the bottom plate (13) of the positive pressure liquid accumulation tank is fixed with a flow-shielding plate (23), the lower end of the flow-shielding plate (23) is fixed with a lower edge (24), the baffle plate (23) is provided with a plurality of holes for the penetration and fixation of the liquid feeding pipe (14) and the return pipe (18).
5. The liquid seal safety breather valve for positive and negative pressure backflow according to claim 1, wherein the bottom plate assembly (3) comprises a bottom plate (31) and a liquid discharge pipe (32), the bottom plate (31) is arranged in a circular ring structure, the breather pipe assembly (1) penetrates through an inner ring of the bottom plate (31) and is fixedly connected with the bottom plate (31), a liquid discharge hole (311) for connecting the liquid discharge pipe (32) is formed in the bottom plate (31), a ball valve (33) is installed at one end, away from the bottom plate (31), of the liquid discharge pipe (32), the liquid discharge pipe (32) penetrates through the bottom plate (31), and an upper port of the liquid discharge pipe and an upper end face of the bottom plate (31) are located on the same horizontal plane.
6. The positive-negative pressure backflow liquid seal safety breather valve according to claim 5, wherein the upper end cover plate assembly (4) comprises a top cover (41) and a positive pressure liquid accumulation groove side wall (44), the upper end and the lower end of the positive pressure liquid accumulation groove side wall (44) are respectively fixedly connected with the top cover (41) and the negative pressure liquid accumulation groove assembly (5), a through hole (441) for communicating a flame arrester structure (45) is formed in the positive pressure liquid accumulation groove side wall (44), flame arrester spoilers (42) are arranged on the positive pressure liquid accumulation groove side wall (44) and the positions of the flame arrester structure (45) which are symmetrical with respect to the through hole (441), the lower end of each flame arrester spoiler (42) is fixedly connected with the inner wall of the positive pressure liquid accumulation groove side wall (44) through a flame arrester spoiler lower baffle (43), and a maintenance hole (411) sealed through a maintenance hole cover plate (46) is formed in the top cover plate (41), the liquid adding device is also provided with a liquid adding hole (412) for inserting and placing the liquid adding pipe (14), and the liquid adding pipe (14) is fixedly connected with the inner wall of the liquid adding hole (412).
7. The positive-negative pressure backflow liquid seal safety breather valve according to claim 1, wherein the negative-pressure liquid accumulation groove assembly (5) comprises a side wall plate (51), a negative-pressure liquid accumulation groove bottom plate (52) and a negative-pressure liquid accumulation groove side wall (53), the upper end and the lower end of the negative-pressure liquid accumulation groove side wall (35) are respectively fixedly connected with the lower end of the upper cover plate assembly (4) and the negative-pressure liquid accumulation groove bottom plate (52), the side wall plate (51) penetrates through the negative-pressure liquid accumulation groove bottom plate (52), the lower end of the side wall plate is fixed with the bottom plate assembly (3), a second type hole (511) is arranged at the upper end of the side wall plate (51), the second type hole can be any shape hole, the second type hole (511) is located at the upper end of the negative-pressure liquid accumulation groove bottom plate (52), and the bottom end of the second type hole (511) and the upper end face of the negative-pressure liquid accumulation groove bottom plate (52.
8. The positive-negative pressure backflow liquid seal safety breather valve according to claim 7, wherein a liquid discharge hole (521) communicated with a liquid discharge pipe (55) is formed in the bottom plate (52) of the negative-pressure liquid accumulation tank, a ball valve (33) is installed at one end, away from the bottom plate (52), of the liquid discharge pipe (55), a balance hole (531) is formed in the side wall (53) of the negative-pressure liquid accumulation tank, the balance hole (531) is communicated with a vent pipe (54), and one end, away from the side wall (53) of the negative-pressure liquid accumulation tank, of the vent pipe (54) is connected with a plug or a valve.
9. The liquid seal safety breather valve with positive and negative pressure backflow as claimed in claim 4, further comprising a magnetostrictive liquid level meter assembly (7), wherein the magnetostrictive liquid level meter assembly (7) penetrates through a liquid level meter slot hole (413) formed in the top cover (41) and is inserted into a liquid level meter slot (25) formed in the inner side of the liquid separation barrel (21).
10. The liquid seal safety breather valve with positive and negative pressure backflow as claimed in claim 9, wherein the magnetostrictive liquid level meter assembly (7) comprises a magnetostrictive liquid level meter (71), a magnetostrictive liquid level meter bottom plate (72) and a magnetostrictive liquid level meter fixing plate (73), the magnetostrictive liquid level meter bottom plate (72) is a thin plate with a hole in the middle and can be placed in the liquid level meter groove (25), the magnetostrictive liquid level meter bottom plate (72) is fixed at the bottom of the magnetostrictive liquid level meter (71) through bolts, and the magnetostrictive liquid level meter fixing plate (73) is a square or round thin plate, is connected with the magnetostrictive liquid level meter (71) and is connected to the top cover (41) through bolts.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910503207.3A CN110131453B (en) | 2019-06-11 | 2019-06-11 | Positive and negative pressure backflow liquid seal safety breather valve |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910503207.3A CN110131453B (en) | 2019-06-11 | 2019-06-11 | Positive and negative pressure backflow liquid seal safety breather valve |
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| CN110131453A CN110131453A (en) | 2019-08-16 |
| CN110131453B true CN110131453B (en) | 2020-05-12 |
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|---|---|---|---|---|
| US2371961A (en) * | 1942-11-25 | 1945-03-20 | Clifford A Ellis | Tank vent valve |
| SU894290A2 (en) * | 1979-12-26 | 1981-12-30 | Донецкий Ордена Трудового Красного Знамени Политехнический Институт | Hydraulic respiratory valve |
| CN204751096U (en) * | 2015-03-13 | 2015-11-11 | 陆威延 | Oil storage tank numeral table shows frostproofing hydraulic pressure formula relief valve of oil blanket liquid level |
| CN206669051U (en) * | 2017-04-12 | 2017-11-24 | 抚顺丰业石化机械制造有限公司 | A kind of safety relief valve |
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