A magnetically driven single-channel breather valve and oil / gas recovery system

Abstract

This invention discloses a magnetically actuated single-channel breather valve and an oil and gas recovery system, including a pressure-adjustable single-channel single-valve-plate breather valve. The pressure-adjustable single-channel single-valve-plate breather valve includes a magnetically actuated valve plate opener and a valve plate assembly. A magnetically actuated valve plate control mechanism is designed using the principle of spring energy storage, enabling the valve plate to open under both overpressure and vacuum conditions to release high-pressure steam or replenish air to balance the tank pressure. An oil vapor condensation mechanism based on a vortex tube, a condensed oil mist separation mechanism, a residual oil vapor adsorption filter, and an oxygen suction valve filter are designed to recover oil vapor released during overpressure relief, thereby significantly reducing the amount of oil vapor emitted into the atmosphere. Simultaneously, it enables the adsorption of oxygen from the air during vacuum replenishment and the re-release of the oil vapor adsorbed by the filter back into the storage tank, thereby improving the efficiency of oil vapor recovery and significantly reducing the oxygen content and deflagration risk within the storage tank.

Description

Technical Field

[0001] This invention relates to safety devices for oil and gas storage tanks, and more particularly to a magnetically driven single-channel breather valve and an oil and gas recovery system. Background Technology

[0002] A breather valve is an essential safety device installed on oil and gas storage tanks. Its purpose is to automatically open and release oil vapors from the tank when it becomes overpressured due to oil and gas evaporation, preventing tank expansion. Conversely, as the stored oil is consumed, the pressure inside the tank decreases and a vacuum forms, the breather valve automatically opens to replenish the tank, preventing low-pressure collapse. Furthermore, the use of breather valves can significantly reduce the leakage of volatile materials from the tank, minimizing environmental pollution and contributing to both safety and environmental protection.

[0003] Currently, most breather valves are gravity-type, adjusting their opening pressure by regulating the configuration of the upper part of the valve disc. However, once open, the valve disc is affected by the hydrodynamic forces of the airflow, causing the closing pressure to be lower than the opening pressure. This allows more oil vapor to escape into the atmosphere or more air to enter the storage tank, significantly impacting the breather valve's ability to control VOC pollution. Furthermore, most current breather valves are dual-channel structures combining an exhalation valve and an inhalation valve. When the tank is under high pressure, oil vapor is released into the atmosphere through the exhalation valve; when the tank is under vacuum, air enters the tank through the inhalation valve. This structure significantly increases the size and weight of the breather valve, also increasing manufacturing costs.

[0004] Regarding the installation and use of breather valves, they typically release high-pressure oil vapor directly into the atmosphere without any explanation of vapor recovery. This not only causes VOC pollution in the surrounding air but also wastes oil and gas, and in severe cases, increases the risk of fire at gas stations and oil and gas storage and transportation stations. Furthermore, when the storage tank is under vacuum and the breather valve opens to replenish air, a large amount of oxygen enters the tank, increasing the oxygen content and the risk of internal explosion.

[0005] Therefore, existing technologies have shortcomings and need to be improved. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide an essential safety device for oil and gas storage tanks to address the shortcomings of the prior art.

[0007] The technical solution of the present invention is as follows:

[0008] A magnetically actuated single-channel breather valve includes a pressure-adjustable single-channel single-valve-plate breather valve (1); the pressure-adjustable single-channel single-valve-plate breather valve (1) includes a magnetically actuated valve plate opener (13) and a valve plate assembly (14); the magnetically actuated valve plate opener (13) includes an opener housing (131), a sliding magnet (132), a control lever (133), an elastic rod (134), a control lever mounting bracket (135), a low-pressure actuating magnet (136a), a reset magnet (136b), a high-pressure actuating magnet (136c), a nylon baffle (137), a low-pressure adjusting spring (138a), a high-pressure adjusting spring (139a), a low-pressure adjusting handle (138d), and a high-pressure adjusting handle (139d); the opener housing (131) is a structure cast from a non-ferromagnetic material, including a lower opener housing (1311) and an upper opener housing (1312).

[0009] A rectangular slide (1314) is machined along the length of the upper housing (1312) of the opener, and a tank pressure detection interface pipe (1317) and an atmospheric pressure detection hole (1318) are machined on its rear side respectively; the tank pressure detection interface pipe is located on the side of the low pressure regulating spring (138a), and the atmospheric pressure detection hole is located on the side of the high pressure regulating spring (139a).

[0010] The elastic rod (134) is installed between the control lever (133) and the sliding magnet (132); inside the rectangular slide (1314) of the upper housing (1312) of the opening and closing device, from left to right, a spring pressure plate (138b), a low-pressure adjusting spring (138a), a high-pressure actuating magnet (136c), a nylon spacer (137), a reset magnet (136b), a nylon spacer (137), a low-pressure actuating magnet (136a), a high-pressure adjusting spring (139a), and a spring pressure plate (139b) are respectively provided on its left and right sides. End caps (138c) and (139c) are bolted to the upper housing (1312) of the opener; the middle portions of the end caps (138c) and (139c) are respectively provided with threaded through holes, wherein the low pressure adjustment handle (138d) is installed in the threaded through hole of the end cap (138c) and applies pressure to the spring plate (138b) and the low pressure adjustment spring (138a), and the high pressure adjustment handle (139d) is installed in the threaded through hole of the end cap (139c) and applies pressure to the spring plate (139b) and the high pressure adjustment spring (139a);

[0011] The magnetic valve plate opener (13) is installed on the right side of the breather valve housing (11), and the tank pressure detection interface pipe (1317) on the back of the opener housing (131) is connected to the tank side vent pipe (114a) through a rubber tube and a three-way pipe.

[0012] When the internal pressure of the storage tank is at the rated operating condition, the internal pressure of the storage tank enters the space where the low-pressure regulating spring (138a) is located through the storage tank side vent pipe (114a) and the storage tank pressure detection interface pipe (1317). The atmospheric pressure enters the space where the high-pressure regulating spring (139a) is located through the atmospheric pressure detection hole (1318). At this time, under the action of the internal pressure of the storage tank, the atmospheric pressure, the low-pressure regulating spring (138a) and the high-pressure regulating spring (139a), the reset magnet (136b) and the sliding magnet (132) are aligned in the vertical direction. The N pole / S pole magnetic field of the upper part of the sliding magnet (132) is aligned with the reset magnet (136b). The S and N pole magnetic fields at the bottom of the position magnet (136b) attract each other, causing the sliding magnet (132) to move to the top of the convex groove (1313). The spherical protrusion on the right side of the elastic rod guide shell (1342) of the elastic rod (134) follows the sliding magnet (132) to the upper limit position. At this time, under the action of the elastic rod (134), the operating lever (133) rotates downward around the pin axis, and the valve plate assembly fork (1331) drives the valve plate assembly (14) to move downward to the limit position. At this time, the V-shaped valve plate (141) of the valve plate assembly (14) cooperates with the V-shaped valve port of the breathing valve housing (11) to realize the closure of the breathing valve.

[0013] When the internal pressure of the storage tank exceeds the rated working pressure range, the high pressure inside the storage tank enters the space where the low pressure regulating spring (138a) is located through the tank-side vent pipe (114a) and the tank pressure detection interface pipe (1317). Together with the low pressure regulating spring (138a), it overcomes the elastic force of the high pressure regulating spring (139a) and atmospheric pressure, pushing the low pressure actuating magnet (136a), the reset magnet (136b), the high pressure actuating magnet (136c), and the nylon spacer block (137) to move to the right. This causes the high pressure actuating magnet (136c) to gradually align with the sliding magnet (132) in the vertical direction. When the alignment reaches a certain degree, the high pressure actuating magnet (136a) stops moving. c) The repulsive force between the lower S / N pole magnetic field and the upper S / N pole magnetic field of the sliding magnet (132) is also large enough; causing the sliding magnet (132) to move quickly to the bottom of the convex groove (1313), and the right spherical protrusion of the elastic rod small guide shell (1342) of the elastic rod (134) follows the sliding magnet (132) to the lower limit position. At this time, under the action of the elastic rod (134), the operating lever (133) rotates upward around the pin axis, and the valve plate assembly fork (1331) drives the valve plate assembly (14) to move upward to the limit position; at this time, the V-shaped valve plate (141) of the valve plate assembly (14) leaves the V-shaped valve port of the breathing valve housing (11), realizing the opening of the breathing valve;

[0014] When the internal pressure of the storage tank exceeds the rated working pressure range, atmospheric pressure enters the space where the high-pressure regulating spring (139a) is located through the atmospheric pressure detection hole (1318). Together with the high-pressure regulating spring (139a), it overcomes the elasticity of the low-pressure regulating spring (138a) and the internal pressure of the storage tank, pushing the low-pressure actuating magnet (136a), the reset magnet (136b), the high-pressure actuating magnet (136c), and the nylon spacer block (137) to move to the left. This causes the low-pressure actuating magnet (136a) and the sliding magnet (132) to gradually align in the vertical direction. When the alignment reaches a certain degree, the S-shaped part at the bottom of the low-pressure actuating magnet (136a)... The repulsive force between the S / N pole magnetic field and the upper S / N pole magnetic field of the sliding magnet (132) is also large enough; causing the sliding magnet (132) to move quickly to the bottom of the convex groove (1313), and the right spherical protrusion of the elastic rod small guide shell (1342) of the elastic rod (134) follows the sliding magnet (132) to the lower limit position. At this time, under the action of the elastic rod (134), the operating lever (133) rotates upward around the pin axis, and the valve plate assembly fork (1331) drives the valve plate assembly (14) to move upward to the limit position. At this time, the V-shaped valve plate (141) of the valve plate assembly (14) leaves the V-shaped valve port of the breathing valve housing (11), realizing the opening of the breathing valve.

[0015] The magnetically actuated single-channel breather valve, the pressure-adjustable single-channel single-valve plate breather valve (1) further includes a breather valve housing (11), a breather valve top cover (12), and a valve plate guide post (15); the breather valve housing (11) is a cast structure with round tubes on the left and right sides and a square housing in the middle. The left and right sides are respectively an atmospheric side interface pipe (111b) and a storage tank side interface pipe (111a). At the bottom of the square housing, the atmospheric side interface pipe (111b) and the storage tank side interface pipe (111a) are connected together by a V-shaped valve port (112), and the center of the housing at the bottom of the V-shaped valve port is provided with a valve plate guide post mounting thread hole (113); the storage tank side interface pipe (111a) is provided with a mounting flange on the right side and a storage tank side vent pipe on the upper part. 114a); The atmospheric side interface pipe (111b) is provided with a mounting flange on the left side and an atmospheric side vent pipe (114b) on the upper part; The right side of the square shell in the middle of the breather valve housing (11) is provided with a magnetic valve plate opener mounting window (115), and the outer side of the magnetic valve plate opener mounting window (115) is provided with a plurality of evenly distributed through holes (119) for installing the magnetic opener (13); The magnetic valve plate opener mounting window (115) is square; The top of the square shell in the middle of the breather valve housing (11) is provided with a square valve plate mounting port (116), and a flange is provided on the upper part of the valve plate mounting port. The flange is machined with a plurality of threaded holes (117) for fixing the breather valve top cover (12). The breather valve top cover (12) is machined with through holes corresponding to the threaded holes (17) and is fixed by top cover fixing bolts (16).

[0016] The magnetic single-channel breathing valve includes a valve plate assembly (14) comprising a V-shaped valve plate (141) and a valve plate operating frame (142). The shape of the V-shaped valve plate (141) is consistent with the V-shaped valve port (112). The bottom of the valve plate operating frame (142) is machined with a connecting plate that is consistent with the top cylindrical surface of the V-shaped valve plate (141). The valve plate operating frame (142) is assembled with the V-shaped valve plate (141) through the connecting plate and bolts. The upper part of the valve plate operating frame (142) is a cylinder, and cuboid valve plate operating frame upper stop bar (143a) and valve plate operating frame upper stop bar (143b) are symmetrically machined near the top of the cylinder. The V-shaped valve plate (141) and the valve plate operating frame (142) are machined with valve plate assembly guide holes (144) along their vertical central axis, and the diameter of the holes is slightly larger than the diameter of the valve plate guide post (15).

[0017] The magnetic single-channel breathing valve has a valve plate guide post (15) that is a cylindrical rod with an external thread at its lower part that mates with the valve plate guide post mounting threaded hole (113). The maximum length of the valve plate guide post (15) is slightly less than the maximum height of the breathing valve housing (11). The valve plate guide post (15) is fixed in the valve plate guide post mounting threaded hole (113) by the external thread at its lower part. The valve plate assembly (14) is inserted into the valve plate guide post (15) through the valve plate assembly guide hole (144). Under the constraints of the valve plate guide post (15) and the V-shaped valve port (112), the valve plate assembly (14) can only move up and down. When the V-shaped valve plate (141) moves to the bottom and cooperates with the V-shaped valve port (112), it can cut off the airflow channels of the tank side interface pipe (111a) and the atmospheric side interface pipe (111b). When the V-shaped valve plate (141) is lifted from the V-shaped valve port (112), it will connect the airflow channels of the tank side interface pipe (111a) and the atmospheric side interface pipe (111b).

[0018] The magnetic single-channel breathing valve has a nylon baffle (137) whose length is at least half the length of the sliding magnet (132), and whose width and height dimensions meet the clearance fit with the rectangular slide (1314). The gap between the nylon baffle (137) and the rectangular slide (1314) is filled with grease to achieve sealing and lubrication effects. The nylon baffle (137) has a length at least half the length of the sliding magnet (132).

[0019] The magnetic single-channel breather valve has a lower housing (1311) that is a square shell with a U-shaped groove (1313) machined on it. The size of the outermost large groove of the U-shaped groove (1313) is consistent with the mounting window (115) of the magnetic valve plate opener. The lower housing (1311) has mounting threaded holes (1315) for fixing the magnetic valve plate opener (13) to the breather valve housing (11) and corresponding to the through hole (119) on the shell around the U-shaped groove (1313). The size of these holes can match the fixing bolts (17) of the magnetic valve plate opener. The lower housing (1311) has multiple mounting bracket fixing threaded holes (1316) for fixing the control lever mounting bracket on the shell on both sides of the inner small groove of the U-shaped groove (1313).

[0020] The magnetic single-channel breathing valve has an L-shaped control rod mounting bracket (135), which includes a fixing plate (1351) and a control rod mounting plate (1352). The fixing plate (1351) has a fixing plate mounting through hole (1353) corresponding to the mounting bracket fixing thread hole (1316). The control rod mounting plate (1352) has a control rod mounting through hole b (1354) in its middle.

[0021] The magnetic single-channel breathing valve has two control lever mounting brackets (135) arranged symmetrically on the left and right sides. They are fixed to the inside of the convex groove (1313) of the lower housing (1311) of the opener and closer by bolts, mounting through holes (135) of the fixing plate and mounting thread holes (1316).

[0022] The magnetic single-channel breathing valve has a control lever (133) that is a rectangular plate structure with U-shaped forks at both ends. The left U-shaped fork is a valve plate assembly fork (1331), and the right U-shaped fork is a flexible rod mounting fork (1332). The plate thickness of the control lever (133) is approximately half the vertical distance between the upper stop (143a) and the lower stop (143b) of the valve plate operating frame. The length of the valve plate assembly fork (1331) is greater than the diameter of the valve plate operating frame (142). The length of the flexible rod mounting fork (1332) is less than the length of the flexible rod (134), and a flexible rod mounting ball socket a (1333) is machined at the bottom of the flexible rod mounting fork (1332), and a control lever mounting through hole a (1334) with the same diameter as the control lever mounting through hole b (1354) is machined at its right end.

[0023] The magnetic single-channel breathing valve has an elastic rod mounting fork (1332) on the right side of the control lever (133) mounted on the control lever mounting bracket (135) via a pin, control lever mounting through hole a (1334), and control lever mounting through hole b (1354), allowing the control lever (133) to rotate up and down around the pin. The valve plate assembly shift fork (1331) on the left side of the control lever (133) is mounted between the upper stop bar (143a) and the lower stop bar (143b) of the valve plate operating frame, allowing the valve plate assembly (14) to move up and down under the action of the valve plate assembly shift fork (1331).

[0024] The magnetic single-channel breathing valve has a square-shaped sliding magnet (132) with a length and width slightly smaller than the length and width of the inner groove of the convex groove (1313). The sliding magnet (132) is installed inside the inner groove of the convex groove (1313) and can slide up and down under the constraint of the inner groove of the convex groove (1313). The upper part of the sliding magnet (132) is the N-level / S-level of the magnetic field, and the lower part is the S-level / N-level of the magnetic field. An elastic rod mounting socket b (1321) is machined at the center of its outer side.

[0025] The magnetic single-channel breathing valve includes an elastic rod (134) comprising a large elastic rod guide shell (1341), a small elastic rod guide shell (1342), and a spring (1343). The inner diameter of the small elastic rod guide shell (1342) is slightly larger than the maximum diameter of the spring (1343), and its outer diameter is slightly smaller than the inner diameter of the large elastic rod guide shell (1341). The left end of the large elastic rod guide shell (1341) is machined into a spherical protrusion that can mate with the elastic rod mounting socket a (1333). The right end of the small elastic rod guide shell (1342) is machined into a spherical protrusion that can mate with the elastic rod mounting socket b (1321).

[0026] An oil and gas recovery system based on any of the aforementioned magnetic single-channel breather valves includes a vortex tube condenser (2), a condensate oil mist separator (3), an oil vapor adsorption filter (4), and an oxygen adsorption filter (5). The main structure of the vortex tube condenser (2) is consistent with that of a general vortex tube refrigerator. Its inlet is provided with a vortex tube inlet flange (21) connected to the atmospheric side interface pipe (111b) of a pressure-adjustable single-channel single-valve plate breather valve (1). The cold end pipe (22) is machined with external threads, and the hot end pipe (23) is provided with a hot end pipe outlet flange (25). Heat dissipation fins (24) are provided on the upper part of the hot end pipe (23). The oil mist condensate separator (3) includes a separator body (31), a separator inlet bend (32), a residual gas check valve (33a), and a condensate oil check valve (33b). The separator inlet bend (32) The upper end is machined with an internal thread and is assembled with the external thread of the cold end tube (22) of the vortex tube condenser (2); the separator body (31) is an inverted cylindrical boss structure, with a residual gas check valve mounting thread hole (34a) and a condensing oil check valve mounting thread hole (34b) machined at the center of its top and bottom, respectively, and a residual gas check valve (33a) and a condensing oil check valve (33b) are respectively assembled thereon; the residual gas check valve (33a) and the condensing oil check valve (33b) have the same structure, both including a check valve seat (331), a check valve cover (332), a sealing ball (333), a sealing spring (334) and a check valve outlet pipe (335). The check valve cover (332) presses the sealing ball (333) against the valve port of the check valve seat (331) through the sealing spring (334) to achieve a one-way sealing effect. The outlet pipe of the residual gas check valve (33a) is connected to the atmospheric side vent pipe (114b) of the breather valve housing (11) via a rubber hose. The outlet pipe of the condensate oil check valve (33b) is connected to the tank side vent pipe (114a) of the breather valve housing (11) via a rubber hose and a three-way pipe. The filter housing (41) and filter end cap (42) of the oil vapor adsorption filter (4) are connected by flanges and bolts. The cylindrical space enclosed by the two is filled with activated carbon particles (45). Its inlet flange pipe (43) is connected to the hot end pipe outlet flange of the vortex tube condenser (2). The housing (51) and filter end cap (52) of the oxygen adsorption filter (5) are connected by flanges and bolts. The cylindrical space enclosed by the two is filled with HDY type deoxidizer particles (55). Its inlet flange pipe (53) is connected to the outlet flange pipe (44) of the oil vapor adsorption filter (4). The outlet flange pipe (54) is directly connected to the atmosphere.

[0027] (1) When the internal pressure of the storage tank exceeds the rated working range, the pressure adjustable single-channel single-valve plate breather valve (1) opens, and the high-pressure oil vapor enters the vortex tube condenser (2). A portion of the oil vapor is cooled through the cold end pipe (22) to form an oil mist mixture and is discharged, while a portion of the oil vapor is discharged through the hot end pipe (23).

[0028] (1.1) The oil mist mixture discharged from the cold end pipe (22) enters the separator body (31) again through the separator inlet bend (32) of the condenser oil mist separator (3), and forms a vortex inside the separator body (31). The heavier condensed oil droplets are separated and thrown onto the inner wall of the separator body (31) and collect at the bottom of the separator body (31). The oil vapor remaining inside the separator body (31) opens the residual gas check valve (33a) due to the pressure, and enters the vortex tube condenser (2) again through the rubber tube and the atmospheric side vent pipe (114b) of the breather valve housing (11).

[0029] (1.2) The oil vapor discharged from the hot end pipe (23) is at a high temperature. When it flows through the top of the hot end pipe (23), it is cooled by the heat dissipation fins (24). Then the oil vapor enters the oil vapor adsorption filter (4) and is adsorbed by the activated carbon particles (45) inside it. Finally, the remaining small amount of oil vapor is discharged into the atmosphere through the oxygen adsorption filter (5), thereby reducing the amount of oil vapor pollutants discharged from the storage tank into the atmosphere.

[0030] (2) When the internal pressure of the storage tank is lower than the rated working range, the pressure adjustable single-channel single-valve plate breather valve (1) is opened, and the air in the atmosphere is replenished to the storage tank in sequence through the oxygen adsorption filter (5), the vortex tube condenser (2) and the pressure adjustable single-channel single-valve plate breather valve (1) to achieve pressure balance.

[0031] (2.1) When air flows through the oxygen adsorption filter (5), the oxygen in the air will be absorbed by the HDY type deoxidizer particles (55), thereby reducing the oxygen content of the gas entering the storage tank, reducing the oxygen content of the gas inside the storage tank, and reducing the risk of deflagration inside the storage tank.

[0032] (2.2) At the same time, the low pressure inside the storage tank will cause the oil vapor adsorbed by the activated carbon particles (45) to be released again and return to the storage tank, thereby achieving pressure balance and oil vapor recovery in the storage tank; the liquid oil collected by the separator body (31) of the condensate oil mist separator (3) will also open the condensate oil check valve (33b) under pressure and enter the storage tank through the rubber tube, the three-way pipe, the storage tank side vent pipe (114a) of the breather valve housing (11), and the storage tank side interface pipe (111a); thereby achieving the recovery of the oil vapor emitted in the early stage.

[0033] This invention designs a single-channel breather valve structure with a gate valve structure. Utilizing the principle of spring energy storage, a magnetic valve plate control mechanism is designed to open the valve plate under both overpressure and vacuum conditions, releasing high-pressure steam or replenishing air to balance the tank pressure. A vortex tube-based oil vapor condensation mechanism, a condensed oil mist separation mechanism, a residual oil vapor adsorption filter, and an oxygen suction valve filter are designed. These mechanisms enable the recovery of oil vapor released during overpressure relief, significantly reducing the amount of oil vapor emitted into the atmosphere. Simultaneously, they adsorb oxygen from the air during vacuum replenishment and release the adsorbed oil vapor back into the storage tank, thereby improving the efficiency of oil vapor recovery and significantly reducing the oxygen content and risk of deflagration within the storage tank.

[0034] Compared with the prior art, the present invention has the following advantages:

[0035] 1. It achieves single-channel overpressure relief and vacuum gas replenishment, with advantages such as compact structure and small size.

[0036] 2. By employing three control magnets and one sliding magnet, a single control mechanism is used to detect overpressure, working pressure, and vacuum, and to drive the valve plate to open or close the passage between the storage tank and the atmosphere. Furthermore, this control mechanism is unaffected by the gas flow or hydrodynamic forces within the pipeline, resulting in higher pressure control accuracy.

[0037] 3. By utilizing the non-coaxial installation of the shift fork and elastic rod, the valve plate can be in two states: fully closed and fully shut, which greatly reduces the flow resistance during the release and replenishment of the breather valve.

[0038] 4. The vortex tube is used to divide the released steam into two parts. The oil vapor in the cold end tube is cooled and condensed, and the liquid oil is separated by a cyclone separator. The oil vapor in the hot end tube is cooled by heat dissipation fins and then adsorbed by an oil vapor adsorption filter. This achieves the recovery of released oil vapor and reduces VOC emissions.

[0039] 5. The advantage of combining the venting channel and the gas replenishment channel is that when the storage tank is vacuumed, the air enters the storage tank through the oxygen adsorption filter and the oil vapor adsorption filter in sequence, which removes the oxygen in the air, reduces the oxygen content in the storage tank and its risk of deflagration. At the same time, the negative pressure in the tank will release the oil vapor adsorbed by the oil vapor adsorption filter and draw it into the storage tank, achieving the purpose of oil vapor recovery and utilization. Attached Figure Description

[0040] Figure 1 Overall structure diagram

[0041] Figure 2 Exploded view of a pressure-adjustable single-channel single-valve breather valve

[0042] Figure 3Half-section diagram of a pressure-adjustable single-channel single-valve breather valve (closed state)

[0043] Figure 4 Half-section diagram of a pressure-adjustable single-channel single-valve breather valve (open state)

[0044] Figure 5 Half-section diagram of the breather valve housing

[0045] Figure 6 Valve plate assembly

[0046] Figure 7 Exploded view of magnetic valve plate opener

[0047] Figure 8 Axonometric drawing of the hoist housing

[0048] Figure 9 Axonometric view of the hoist housing (rear view)

[0049] Figure 10 Axonometric view of the lower housing of the gate opener

[0050] Figure 11 Longitudinal section isometric drawing of the gate opener

[0051] Figure 12 Axonometric drawing of joystick mounting bracket

[0052] Figure 13 Joystick isometric drawing

[0053] Figure 14 Axonometric drawing of a section of an elastic rod

[0054] Figure 15 Sliding magnet

[0055] Figure 16 Diagram of the positional relationship of magnets in the closed state

[0056] Figure 17 Diagram showing the positional relationship of magnets under low-pressure opening (suction valve working state)

[0057] Figure 18 Diagram of magnet positions under high pressure (exhalation valve operating state)

[0058] Figure 19 Axonometric drawing of vortex tube condenser

[0059] Figure 20 Exploded view of condenser oil mist separator

[0060] Figure 21 Axonometric view of condenser oil mist separator

[0061] Figure 22 Axonometric view of a one-way valve

[0062] Figure 23 Cross-sectional isometric view of oil vapor adsorption filter and oxygen adsorption filter

[0063] 1-Pressure adjustable single-channel single-valve breather valve; 2-Vortex tube condenser; 3-Condensation oil mist separator; 4-Oil vapor adsorption filter; 5-Oxygen adsorption filter.

[0064] 11-Breath valve housing; 12-Breath valve top cover; 13-Magnetic valve plate opener / closer; 14-Valve plate assembly; 15-Valve plate guide post; 16-Top cover fixing bolt; 17-Magnetic valve plate opener / closer fixing bolt.

[0065] 111a - Tank-side interface pipe, 111b - Atmospheric-side interface pipe, 112 - V-shaped valve port, 113 - Valve plate guide post mounting threaded hole, 114a - Tank-side vent pipe, 114b - Atmospheric-side vent pipe, 115 - Magnetic valve plate opener / close mounting window, 116 - Valve plate mounting port, 117 - Threaded hole, 119 - Through hole.

[0066] 141-V-shaped valve plate, 142-Valve plate operating frame, 143a-Upper stop bar of valve plate operating frame, 143b-Lower stop bar of valve plate operating frame, 144-Guide hole for valve plate assembly.

[0067] 131-Opener housing; 132-Sliding magnet; 133-Operating lever; 134-Elastic lever; 135-Operating lever mounting bracket; 136a-Low-pressure actuating magnet; 136b-Reset magnet; 136c-High-pressure actuating magnet; 137-Nylon spacer; 138a-Low-pressure adjusting spring; 138b-Spring plate; 138c-End cap; 138d-Low-pressure adjusting handle; 139a-High-pressure adjusting spring; 139b-Spring plate; 139c-End cap; 139d-High-pressure adjusting handle; 1317-Tank pressure detection interface pipe.

[0068] 1311 - Lower housing of the gate opener; 1312 - Upper housing of the gate opener; 1313 - U-shaped groove; 1314 - Rectangular slide rail; 1315 - Threaded hole for gate opener mounting; 1316 - Threaded hole for mounting bracket fixing; 1318 - Atmospheric pressure detection hole.

[0069] 1351 - Fixing plate, 1352 - Joystick mounting plate, 1353 - Fixing plate mounting through hole, 1354 - Joystick mounting through hole b

[0070] 1331 - Valve plate assembly shift fork; 1332 - Flexible rod mounting fork; 1333 - Flexible rod mounting ball socket a; 1334 - Control lever mounting through hole a.

[0071] 1341 - Large guide shell for elastic rod, 1342 - Small guide shell for elastic rod, 1343 - Spring.

[0072] 1321-Flexible rod mounting socket b,

[0073] 21-Vortex tube inlet flange, 22-Cold end pipe, 23-Hot end pipe, 24-Heat dissipation fins, 25-Hot end pipe outlet flange, 31-Separator body, 32-Separator inlet elbow, 33a-Residual gas check valve, 33b-Condensate oil check valve

[0074] 34a - Residual gas check valve mounting threaded hole; 34b - Condensate oil check valve mounting threaded hole.

[0075] 331 - Check valve seat, 332 - Check valve cover, 333 - Sealing ball, 334 - Sealing spring, 335 - Check valve outlet pipe.

[0076] 41-Filter housing, 42-Filter end cap, 43-Inlet flange, 44-Outlet flange, 45-Activated carbon granules, 51-Filter housing, 52-Filter end cap, 53-Inlet flange, 54-Outlet flange, 55-HDY type deoxidizer granules Detailed Implementation

[0077] The present invention will be described in detail below with reference to specific embodiments.

[0078] This invention proposes a magnetically actuated single-channel breather valve, including a pressure-adjustable single-channel single-valve-plate breather valve 1. The pressure-adjustable single-channel single-valve-plate breather valve 1 includes a breather valve housing 11, a breather valve top cover 12, a magnetically actuated valve plate opener / closer 13, a valve plate assembly 14, a valve plate guide post 15, and a top cover fixing bolt 16.

[0079] The breather valve housing 11 is a cast structure with round tubes on the left and right sides and a square housing in the middle. The left and right sides are respectively an atmospheric side interface pipe 111b and a tank side interface pipe 111a. At the bottom of the square housing, the atmospheric side interface pipe 111b and the tank side interface pipe 111a are connected together by a V-shaped valve port 112, and a valve plate guide post mounting threaded hole 113 is provided at the center of the housing at the bottom of the V-shaped valve port. A mounting flange is provided on the right side of the tank side interface pipe 111a, and a tank side vent pipe 114a is provided at the top. A mounting flange is provided on the left side of the atmospheric side interface pipe 111b, and an atmospheric side vent pipe 114b is provided at the top. A magnetic valve plate opener / closer mounting window 115 is provided on the upper right side of the square housing in the middle of the breather valve housing 11, and multiple evenly distributed through holes 119 are provided on the outer side of the magnetic valve plate opener / closer mounting window 115 for installing the magnetic opener / closer 13. The magnetic valve plate opener / closer mounting window 115 is square. The breathing valve housing 11 has a square valve plate mounting port 116 at the top of its central square housing, and a flange is provided above the valve plate mounting port. The flange has multiple threaded holes 117 for fixing the breathing valve top cover 12. The breathing valve top cover 12 has through holes corresponding to the threaded holes 17 and is fixed by top cover fixing bolts 16.

[0080] The valve plate assembly 14 includes a V-shaped valve plate 141 and a valve plate operating frame 142. The shape of the V-shaped valve plate 141 is consistent with the V-shaped valve port 112. A connecting plate, matching the cylindrical top surface of the V-shaped valve plate 141, is machined at the bottom of the valve plate operating frame 142. The valve plate operating frame 142 is assembled with the V-shaped valve plate 141 via this connecting plate and bolts. The upper part of the valve plate operating frame 142 is cylindrical, and cuboid valve plate operating frame upper stop bars 143a and 143b are symmetrically machined near the top of the cylinder. A valve plate assembly guide hole 144 is machined along the vertical central axis of the V-shaped valve plate 141 and the valve plate operating frame 142, and the diameter of the hole is slightly larger than the diameter of the valve plate guide post 15.

[0081] The valve plate guide post 15 is a cylindrical rod with an external thread machined at its lower part to mate with the valve plate guide post mounting threaded hole 113. The maximum length of the valve plate guide post 15 is slightly less than the maximum height of the breather valve housing 11. The valve plate guide post 15 is fixed in the valve plate guide post mounting threaded hole 113 by its lower external thread, and the valve plate assembly 14 is sleeved on the valve plate guide post 15 through the valve plate assembly guide hole 144. Under the constraint of the valve plate guide post 15 and the V-shaped valve port 112, the valve plate assembly 14 can only move up and down. When the V-shaped valve plate 141 moves to the lowermost position and mates with the V-shaped valve port 112, it can cut off the airflow channels of the tank-side interface pipe 111a and the atmospheric side interface pipe 111b. When the V-shaped valve plate 141 is lifted out of the V-shaped valve port 112, it will connect the airflow channels of the tank-side interface pipe 111a and the atmospheric side interface pipe 111b.

[0082] The magnetic valve plate opener 13 includes an opener housing 131, a sliding magnet 132, an operating lever 133, an elastic lever 134, an operating lever mounting bracket 135, a low-pressure actuating magnet 136a, a reset magnet 136b, a high-pressure actuating magnet 136c, a nylon spacer block 137, a low-pressure adjusting spring 138a, a high-pressure adjusting spring 139a, a low-pressure adjusting handle 138d, a high-pressure adjusting handle 139d, and corresponding spring pressure plates 138b and 139b, and corresponding end caps 138c and 139c.

[0083] The opening and closing device housing 131 is an integrally cast structure, comprising a lower opening and closing device housing 1311 and an upper opening and closing device housing 1312.

[0084] The lower housing 1311 of the actuator is a square shell with a U-shaped groove 1313 machined on it. The outermost large groove of the U-shaped groove 1313 has the same size as the mounting window 115 of the magnetic valve plate actuator. The lower housing 1311 has mounting threaded holes 1315, corresponding to the through hole 119, machined on the shell around the U-shaped groove 1313 to fix the magnetic valve plate actuator 13 to the breather valve housing 11. These holes are sized to fit with the fixing bolts 17 of the magnetic valve plate actuator. The lower housing 1311 has multiple mounting bracket fixing threaded holes 1316 on the shell on both sides of the innermost small groove of the U-shaped groove 1313 for fixing the control lever mounting bracket.

[0085] The upper housing 1312 of the gate opener is a rectangular shell, with its rear side flush with the rear side of the lower housing 1311. A rectangular slide rail 1314 is machined along the length of the upper housing 1312, and a tank pressure detection interface pipe 1317 and an atmospheric pressure detection hole 1318 are respectively machined on its rear side. The tank pressure detection interface pipe is located on the side of the low-pressure regulating spring 138a, and the atmospheric pressure detection hole is located on the side of the high-pressure regulating spring 139a.

[0086] The joystick mounting bracket 135 has an L-shaped structure, including a fixing plate 1351 and a joystick mounting plate 1352. The fixing plate 1351 is machined with a fixing plate mounting through hole 1353 corresponding to the fixing threaded hole 1316 of the mounting bracket. The joystick mounting plate 1352 has a joystick mounting through hole b 1354 in its middle.

[0087] Two control lever mounting brackets 135 are arranged symmetrically on the left and right sides, and are respectively fixed to the inside of the convex groove 1313 of the lower housing 1311 of the opener and closer by bolts, mounting plate mounting through holes 135 and mounting bracket fixing threaded holes 1316.

[0088] The control lever 133 is a rectangular plate structure with U-shaped forks at both ends. The left U-shaped fork is a valve plate assembly shift fork 1331, and the right U-shaped fork is a flexible rod mounting fork 1332. The plate thickness of the control lever 133 is approximately half the vertical distance between the upper stop bar 143a and the lower stop bar 143b of the valve plate operating frame. The length of the valve plate assembly shift fork 1331 is greater than the diameter of the valve plate operating frame 142. The length of the flexible rod mounting fork 1332 is less than the length of the flexible rod 134, and a flexible rod mounting ball socket a 1333 is machined at the bottom of the flexible rod mounting fork 1332. A control lever mounting through hole a 1334 with the same diameter as the control lever mounting through hole b 1354 is machined at its right end.

[0089] The elastic rod mounting fork 1332 on the right side of the control lever 133 is mounted on the control lever mounting bracket 135 via a pin, control lever mounting through hole a 1334, and control lever mounting through hole b 1354, allowing the control lever 133 to rotate up and down around the pin. The valve plate assembly shift fork 1331 on the left side of the control lever 133 is mounted between the upper stop lever 143a and the lower stop lever 143b of the valve plate operating frame, allowing the valve plate assembly 14 to move up and down under the action of the valve plate assembly shift fork 1331.

[0090] The sliding magnet 132 has a square structure, and its length and width are slightly smaller than the length and width of the inner groove of the convex groove 1313. The sliding magnet 132 is installed inside the inner groove of the convex groove 1313, and can slide up and down under the constraint of the inner groove of the convex groove 1313. The upper part of the sliding magnet 132 is the N pole of the magnetic field, the lower part is the S pole of the magnetic field, and an elastic rod mounting socket b 1321 is machined at the center of its outer surface.

[0091] The elastic rod 134 includes a large elastic rod guide shell 1341, a small elastic rod guide shell 1342, and a spring 1343. The inner diameter of the small elastic rod guide shell 1342 is slightly larger than the maximum diameter of the spring 1343, and its outer diameter is slightly smaller than the inner diameter of the large elastic rod guide shell 1341. The left end of the large elastic rod guide shell 1341 is machined into a spherical protrusion that can mate with the elastic rod mounting socket a 1333. The right end of the small elastic rod guide shell 1342 is machined into a spherical protrusion that can mate with the elastic rod mounting socket b 1321.

[0092] The elastic rod 134 is installed between the control lever 133 and the sliding magnet 132. The left spherical protrusion of the large guide shell 1341 of the elastic rod is located inside the elastic rod mounting socket a 1333, and the right spherical protrusion of the small guide shell 1342 of the elastic rod is located inside the elastic rod mounting socket b 1321.

[0093] Inside the rectangular slide 1314 of the upper housing 1312 of the gate opener, from left to right, are arranged a spring pressure plate 138b, a low-pressure adjusting spring 138a, a high-pressure actuating magnet 136c, a nylon spacer block 137, a reset magnet 136b, a nylon spacer block 137, a low-pressure actuating magnet 136a, a high-pressure adjusting spring 139a, and a spring pressure plate 139b. End caps 138c and 139c are respectively provided on the left and right sides and are bolted to the upper housing 1312 of the gate opener. The end caps 138c and 139c are respectively provided with threaded through holes in their middle portions. The low-pressure adjustment handle 138d is installed in the threaded through hole of the end cap 138c and applies pressure to the spring pressure plate 138b and the low-pressure adjustment spring 138a. The high-pressure adjustment handle 139d is installed in the threaded through hole of the end cap 139c and applies pressure to the spring pressure plate 139b and the high-pressure adjustment spring 139a.

[0094] The width and height of the low-voltage actuating magnet 136a, the reset magnet 136b, and the high-voltage actuating magnet 136c are slightly smaller than those of the rectangular slide rail 1314, while their length is consistent with that of the sliding magnet 132. The upper part of the low-voltage actuating magnet 136a and the lower part of the high-voltage actuating magnet 136c are of the S-pole magnetic field, and the lower part is of the N-pole magnetic field. The upper part of the reset magnet 136b is of the N-pole magnetic field, and the lower part is of the S-pole magnetic field.

[0095] The nylon spacer 137 is at least half the length of the sliding magnet 132, and its width and height dimensions are in clearance fit with the rectangular slide rail 1314. The gap between the nylon spacer 137 and the rectangular slide rail 1314 is filled with grease to achieve sealing and lubrication. The nylon spacer 137 is at least half the length of the sliding magnet 132.

[0096] With the breather valve in its factory-tested state, adjust the degree of screwing in the low-pressure regulating handle 138d and the high-pressure regulating handle 139d, as well as the size and stiffness coefficient of the low-pressure regulating spring 138a and the high-pressure regulating spring 139a, so that the reset magnet 136b is in the middle position.

[0097] The magnetic valve plate opener 13 is installed on the right side of the breather valve housing 11 via the magnetic valve plate opener mounting window 115, the magnetic valve plate opener fixing bolt 17, and the opener mounting threaded hole 1315. The tank pressure detection interface pipe 1317 on the back of the opener housing 131 is connected to the tank side vent pipe 114a via a rubber tube and a tee pipe.

[0098] The working principle of the pressure-adjustable single-channel single-valve breather valve is as follows:

[0099] (1) When using the breathing valve, you only need to adjust the degree of screwing in the low pressure adjustment handle 138d and the high pressure adjustment handle 139d to adjust the overpressure opening pressure and vacuum opening pressure of the breathing valve.

[0100] (2) When the internal pressure of the storage tank is at the rated operating condition, the internal pressure of the storage tank enters the space where the low-pressure regulating spring 138a is located through the storage tank side vent pipe 114a, the hose, and the storage tank pressure detection interface pipe 1317. The atmospheric pressure enters the space where the high-pressure regulating spring 139a is located through the atmospheric pressure detection hole 1318. At this time, under the action of the internal pressure of the storage tank, the atmospheric pressure, the low-pressure regulating spring 138a, and the high-pressure regulating spring 139a, the reset magnet 136b and the sliding magnet 1... When 32 are aligned vertically, the N-pole magnetic field at the top of the sliding magnet 132 attracts the S-pole magnetic field at the bottom of the reset magnet 136b, causing the sliding magnet 132 to move to the top of the convex groove 1313. The right spherical protrusion of the elastic rod guide shell 1342 of the elastic rod 134 follows the sliding magnet 132 to its upper limit position. At this time, under the action of the elastic rod 134, the operating lever 133 rotates downward around the pin axis, and the valve plate assembly fork 1331 drives the valve plate assembly 14 to move downward to its limit position. At this time, the V-shaped valve plate 141 of the valve plate assembly 14 cooperates with the V-shaped valve port of the breather valve housing 11 to close the breather valve.

[0101] (3) When the internal pressure of the storage tank exceeds the rated working pressure range, the high pressure inside the storage tank enters the space where the low pressure regulating spring 138a is located through the storage tank side vent pipe 114a, rubber hose, and storage tank pressure detection interface pipe 1317. Together with the low pressure regulating spring 138a, it overcomes the elasticity of the high pressure regulating spring 139a and atmospheric pressure, and pushes the low pressure actuating magnet 136a, the reset magnet 136b, the high pressure actuating magnet 136c and the nylon spacer block 137 to move to the right. This causes the high pressure actuating magnet 136c and the sliding magnet 132 to gradually align in the vertical direction. When the alignment reaches a certain degree, the repulsive force between the N pole magnetic field at the bottom of the high pressure actuating magnet 136c and the N pole magnetic field at the top of the sliding magnet 132 is also large enough. The sliding magnet 132 is quickly moved to the bottom of the raised groove 1313. The right spherical protrusion of the elastic rod guide shell 1342 of the elastic rod 134 follows the sliding magnet 132 to the lower limit position. At this time, under the action of the elastic rod 134, the operating lever 133 rotates upward around the pin axis, and the valve plate assembly fork 1331 drives the valve plate assembly 14 to move upward to the limit position. At this time, the V-shaped valve plate 141 of the valve plate assembly 14 leaves the V-shaped valve port of the breather valve housing 11, realizing the opening of the breather valve.

[0102] (4) When the internal pressure of the storage tank is lower than the rated working pressure range, the atmospheric pressure enters the space where the high pressure regulating spring 139a is located through the atmospheric pressure detection hole 1318. Together with the high pressure regulating spring 139a, it overcomes the elasticity of the low pressure regulating spring 138a and the internal pressure of the storage tank, and pushes the low pressure action magnet 136a, the reset magnet 136b, the high pressure action magnet 136c and the nylon spacer block 137 to move to the left, so that the low pressure action magnet 136a and the sliding magnet 132 gradually align in the vertical direction. When the alignment reaches a certain degree, the repulsive force between the N pole magnetic field at the bottom of the low pressure action magnet 136a and the N pole magnetic field at the top of the sliding magnet 132 is also large enough. The sliding magnet 132 is quickly moved to the bottom of the raised groove 1313. The right spherical protrusion of the elastic rod guide shell 1342 of the elastic rod 134 follows the sliding magnet 132 to the lower limit position. At this time, under the action of the elastic rod 134, the operating lever 133 rotates upward around the pin axis, and the valve plate assembly fork 1331 drives the valve plate assembly 14 to move upward to the limit position. At this time, the V-shaped valve plate 141 of the valve plate assembly 14 leaves the V-shaped valve port of the breather valve housing 11, realizing the opening of the breather valve.

[0103] This embodiment also provides an oil and gas recovery system based on the above-mentioned magnetic single-channel breather valve, including a vortex tube condenser 2, a condensate oil mist separator 3, an oil vapor adsorption filter 4, and an oxygen adsorption filter 5; the main structure of the vortex tube condenser 2 is consistent with that of a general vortex tube refrigerator, and its inlet is provided with a vortex tube inlet flange 21 connected to the atmospheric side interface pipe 111b of the pressure adjustable single-channel single-valve plate breather valve 1, its cold end pipe 22 end is machined with external threads, its hot end pipe 23 end is provided with a hot end pipe outlet flange 25, and heat dissipation fins 24 are provided on the upper part of the hot end pipe 23.

[0104] The oil mist condenser separator 3 includes a separator body 31, a separator inlet bend 32, a residual gas check valve 33a, and a condensate oil check valve 33b. The upper end of the separator inlet bend 32 is machined with an internal thread, which mates with the external thread at the end of the cold end tube 22 of the vortex tube condenser 2. The separator body 31 is an inverted cylindrical boss structure, with a residual gas check valve mounting threaded hole 34a and a condensate oil check valve mounting threaded hole 34b machined at the center of its top and bottom, respectively, and the residual gas check valve 33a and the condensate oil check valve 33b are respectively installed thereon.

[0105] The residual gas check valve 33a and the condensate oil check valve 33b have the same structure, both including a check valve seat 331, a check valve cover 332, a sealing ball 333, a sealing spring 334, and a check valve outlet pipe 335. The check valve cover 332 presses the sealing ball 333 against the valve port of the check valve seat 331 through the sealing spring 334, achieving a one-way seal. The outlet pipe of the residual gas check valve 33a is connected to the atmospheric side vent pipe 114b of the breather valve housing 11 via a rubber hose, and the outlet pipe of the condensate oil check valve 33b is connected to the tank side vent pipe 114a of the breather valve housing 11 via a rubber hose and a tee pipe.

[0106] The oil vapor adsorption filter 4 and oxygen adsorption filter 5 have the same structure, consisting of filter housings 41 and 51, filter end caps 42 and 52, inlet flanges 43 and 53, and outlet flanges 44 and 54, respectively. The filter housing 41 and filter end cap 42 of the oil vapor adsorption filter 4 are connected by flanges and bolts, and the cylindrical space formed by them is filled with activated carbon particles 45. Its inlet flange 43 is connected to the outlet flange of the hot end pipe of the vortex tube condenser 2. The housing 51 and filter end cap 52 of the oxygen adsorption filter 5 are connected by flanges and bolts, and the cylindrical space formed by them is filled with HDY type deoxidizer particles 55. Its inlet flange 53 is connected to the outlet flange 44 of the oil vapor adsorption filter 4, and the outlet flange 54 is directly vented to the atmosphere.

[0107] The working principle of the oil and gas recovery system is as follows:

[0108] (1) When the internal pressure of the storage tank exceeds the rated working range, the pressure-adjustable single-channel single-valve plate breather valve 1 opens, and the high-pressure oil vapor enters the vortex tube condenser 2. A portion of the oil vapor is cooled through the cold end pipe 22 to form an oil mist mixture and is discharged, while a portion of the oil vapor is discharged through the hot end pipe 23.

[0109] (1.1) The oil mist mixture discharged from the cold end pipe 22 enters the separator body 31 again through the separator inlet bend 32 of the condenser oil mist separator 3, and forms a vortex inside the separator body 31. The heavier condensed oil droplets are separated and thrown onto the inner wall of the separator body 31 and collect at the bottom of the separator body 31. The oil vapor remaining inside the separator body 31 opens the residual gas check valve 33a due to the pressure, and enters the vortex tube condenser 2 again through the rubber tube and the atmospheric side vent pipe 114b of the breather valve housing 11.

[0110] (1.2) The oil vapor discharged from the hot end pipe 23 has a high temperature. When it flows over the top of the hot end pipe 23, it is cooled by the heat dissipation fins 24. Then the oil vapor enters the oil vapor adsorption filter 4 and is adsorbed by the activated carbon particles 45 inside it. Finally, the remaining small amount of oil vapor is discharged into the atmosphere through the oxygen adsorption filter 5, which greatly reduces the amount of oil vapor pollutants emitted from the storage tank into the atmosphere.

[0111] (2) When the internal pressure of the storage tank is lower than the rated working range, the pressure-adjustable single-channel single-valve plate breather valve 1 opens, and the air in the atmosphere replenishes the storage tank through the oxygen adsorption filter 5, the vortex tube condenser 2 and the pressure-adjustable single-channel single-valve plate breather valve 1 in sequence to achieve pressure balance.

[0112] (2.1) When air flows through the oxygen adsorption filter 5, the oxygen in the air will be absorbed by the HDY type deoxidizer particles 55, thereby reducing the oxygen content of the gas entering the storage tank, reducing the oxygen content of the gas inside the storage tank, and reducing the risk of deflagration inside the storage tank.

[0113] (2.2) Simultaneously, the low pressure inside the storage tank will cause the oil vapor adsorbed by the activated carbon particles 45 to be released again and return to the storage tank, achieving pressure balance and oil vapor recovery in the storage tank; the liquid oil collected in the separator body 31 of the condensate oil mist separator 3 will also open the condensate oil check valve 33b under pressure, and enter the storage tank through the rubber hose, the three-way pipe, the storage tank side vent pipe 114a of the breather valve housing 11, and the storage tank side interface pipe 111a. Thus, the recovery of the previously emitted oil vapor is achieved.

[0114] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A magnetically actuated single-channel breather valve, characterized in that, The device includes a pressure-adjustable single-channel single-valve-plate breather valve (1); the pressure-adjustable single-channel single-valve-plate breather valve (1) includes a magnetic valve plate opener (13) and a valve plate assembly (14); the magnetic valve plate opener (13) includes an opener housing (131), a sliding magnet (132), a control lever (133), an elastic rod (134), a control lever mounting bracket (135), a low-pressure actuating magnet (136a), a reset magnet (136b), a high-pressure actuating magnet (136c), a nylon baffle (137), a low-pressure adjusting spring (138a), a high-pressure adjusting spring (139a), a low-pressure adjusting handle (138d), and a high-pressure adjusting handle (139d); the opener housing (131) is a structure cast from a non-ferromagnetic material, including a lower opener housing (1311) and an upper opener housing (1312). A rectangular slide (1314) is machined along the length of the upper housing (1312) of the opener, and a tank pressure detection interface pipe (1317) and an atmospheric pressure detection hole (1318) are machined on its rear side respectively; the tank pressure detection interface pipe is located on the side of the low pressure regulating spring (138a), and the atmospheric pressure detection hole is located on the side of the high pressure regulating spring (139a). The elastic rod (134) is installed between the control lever (133) and the sliding magnet (132); inside the rectangular slide (1314) of the upper housing (1312) of the opener, from left to right, are assembled a spring pressure plate (138b), a low-pressure adjusting spring (138a), a high-pressure actuating magnet (136c), a nylon spacer (137), a reset magnet (136b), a nylon spacer (137), a low-pressure actuating magnet (136a), a high-pressure adjusting spring (139a), and a spring pressure plate (139b); and on its left and right sides are respectively provided End caps (138c) and (139c) are bolted to the upper housing (1312) of the opener; the middle portions of the end caps (138c) and (139c) are respectively provided with threaded through holes, wherein the low pressure adjustment handle (138d) is installed in the threaded through hole of the end cap (138c) and applies pressure to the spring plate (138b) and the low pressure adjustment spring (138a), and the high pressure adjustment handle (139d) is installed in the threaded through hole of the end cap (139c) and applies pressure to the spring plate (139b) and the high pressure adjustment spring (139a); The magnetic valve plate opener (13) is installed on the right side of the breather valve housing (11), and the tank pressure detection interface pipe (1317) on the back of the opener housing (131) is connected to the tank side vent pipe (114a) through a rubber tube and a three-way pipe. The sliding magnet (132) has a square structure, and its length and width are slightly smaller than the length and width of the inner groove of the convex groove (1313). The sliding magnet (132) is installed inside the inner groove of the convex groove (1313), and the sliding magnet (132) can slide up and down under the constraint of the inner groove of the convex groove (1313). The upper part of the sliding magnet (132) is the N-level / S-level of the magnetic field, the lower part is the S-level / N-level of the magnetic field, and an elastic rod mounting socket b (1321) is processed at the center of its outer side. The width and height of the low-voltage actuating magnet (136a), the reset magnet (136b), and the high-voltage actuating magnet (136c) are slightly smaller than those of the rectangular slide rail (1314), while their length is consistent with that of the sliding magnet (132). The upper part of the low-voltage actuating magnet (136a) and the high-voltage actuating magnet (136c) is the S-pole of the magnetic field, and the lower part is the N-pole of the magnetic field. The upper part of the reset magnet (136b) is the N-pole of the magnetic field, and the lower part is the S-pole of the magnetic field. The lower housing (1311) of the actuator is a square shell with a U-shaped groove (1313) machined on it. The size of the outermost large groove of the U-shaped groove (1313) is consistent with the mounting window (115) of the magnetic valve plate actuator. The lower housing (1311) of the actuator has mounting threaded holes (1315) for fixing the magnetic valve plate actuator (13) to the breather valve housing (11) and corresponding to the through hole (119) on the shell around the U-shaped groove (1313). The size of these holes can match the fixing bolts (17) of the magnetic valve plate actuator. The lower housing (1311) of the actuator has multiple mounting bracket fixing threaded holes (1316) for fixing the control lever mounting bracket on the shell on both sides of the inner small groove of the U-shaped groove (1313). The joystick mounting bracket (135) has an L-shaped structure, including a fixing plate (1351) and a joystick mounting plate (1352); the fixing plate (1351) is machined with a fixing plate mounting through hole (1353) corresponding to the mounting bracket fixing thread hole (1316); the joystick mounting plate (1352) has a joystick mounting through hole b (1354) in its middle. Two control lever mounting brackets (135) are arranged symmetrically on the left and right sides, and are respectively fixed to the inside of the convex groove (1313) of the lower housing (1311) of the opener and closer by bolts, mounting through holes (1353) of the fixing plate and mounting fixing threaded holes (1316). The control lever (133) is a rectangular plate structure with U-shaped forks at both ends. The left U-shaped fork is the valve plate assembly fork (1331), and the right U-shaped fork is the elastic rod mounting fork (1332). The plate thickness of the control lever (133) is about half the vertical distance between the upper stop bar (143a) and the lower stop bar (143b) of the valve plate operating frame. The length of the valve plate assembly fork (1331) is greater than the diameter of the valve plate operating frame (142). The length of the elastic rod mounting fork (1332) is less than the length of the elastic rod (134), and an elastic rod mounting ball socket a (1333) is machined at the bottom of the elastic rod mounting fork (1332), and a control lever mounting through hole a (1334) with the same diameter as the control lever mounting through hole b (1354) is machined at its right end.

2. The magnetically actuated single-channel breather valve according to claim 1, characterized in that, The pressure-adjustable single-channel single-valve-plate breather valve (1) further includes a breather valve housing (11), a breather valve top cover (12), and a valve plate guide post (15). The breather valve housing (11) is a cast structure with round tubes on the left and right sides and a square housing in the middle. The left and right sides are respectively an atmospheric side interface pipe (111b) and a storage tank side interface pipe (111a). At the bottom of the square housing, the atmospheric side interface pipe (111b) and the storage tank side interface pipe (111a) are connected together by a V-shaped valve port (112), and a valve plate guide post mounting threaded hole (113) is provided at the center of the housing at the bottom of the V-shaped valve port. The storage tank side interface pipe (111a) has a mounting flange on the right side and a storage tank side vent pipe (114a) on the upper part. The atmospheric side interface pipe (111b) has a mounting flange on the left side and an atmospheric side vent pipe (114a) on the upper part. b); The right side of the square housing in the middle of the breather valve housing (11) is provided with a magnetic valve plate opening and closing device installation window (115), and the outer side of the magnetic valve plate opening and closing device installation window (115) is provided with a plurality of evenly distributed through holes (119) for installing the magnetic valve plate opening and closing device (13); The magnetic valve plate opening and closing device installation window (115) is square; The top of the square housing in the middle of the breather valve housing (11) is provided with a square valve plate installation port (116), and a flange is provided on the upper part of the valve plate installation port. The flange is machined with a plurality of threaded holes (117) for fixing the top cover (12) of the breather valve; The top cover (12) of the breather valve is machined with through holes corresponding to the threaded holes (117), and is fixed by the top cover fixing bolts (16).

3. The magnetically actuated single-channel breather valve according to claim 2, characterized in that, The valve plate assembly (14) includes a V-shaped valve plate (141) and a valve plate operating frame (142). The shape of the V-shaped valve plate (141) is consistent with the V-shaped valve port (112). The bottom of the valve plate operating frame (142) is machined with a connecting plate that is consistent with the top cylindrical surface of the V-shaped valve plate (141). The valve plate operating frame (142) is assembled with the V-shaped valve plate (141) through the connecting plate and bolts. The upper part of the valve plate operating frame (142) is a cylinder, and cuboid valve plate operating frame upper stop bar (143a) and valve plate operating frame upper stop bar (143b) are symmetrically machined near the top of the cylinder. The V-shaped valve plate (141) and the valve plate operating frame (142) are machined with valve plate assembly guide holes (144) along their vertical central axis, and the diameter of the holes is slightly larger than the diameter of the valve plate guide post (15).

4. The magnetically actuated single-channel breather valve according to claim 3, characterized in that, The valve plate guide post (15) is a cylindrical rod with an external thread at its lower part that mates with the valve plate guide post mounting threaded hole (113). The maximum length of the valve plate guide post (15) is slightly less than the maximum height of the breather valve housing (11). The valve plate guide post (15) is fixed in the valve plate guide post mounting threaded hole (113) by its lower external thread, and the valve plate assembly (14) is inserted into the valve plate guide post (15) through the valve plate assembly guide hole (144). Under the constraints of the column (15) and the V-shaped valve port (112), the valve plate assembly (14) can only move up and down. When the V-shaped valve plate (141) moves to the bottom and cooperates with the V-shaped valve port (112), it can cut off the airflow channels of the tank side interface pipe (111a) and the atmospheric side interface pipe (111b). When the V-shaped valve plate (141) is lifted from the V-shaped valve port (112), it will connect the airflow channels of the tank side interface pipe (111a) and the atmospheric side interface pipe (111b).

5. The magnetically actuated single-channel breather valve according to claim 1, characterized in that, The length of the nylon spacer block (137) is at least half the length of the sliding magnet (132), and its width and height dimensions meet the clearance fit with the rectangular slide (1314). The gap between the nylon spacer block (137) and the rectangular slide (1314) is filled with grease to achieve sealing and lubrication effects. The length of the nylon spacer block (137) is at least half the length of the sliding magnet (132).

6. An oil and gas recovery system based on the magnetic single-channel breather valve of any one of claims 1-5, comprising a vortex tube condenser (2), a condensate oil mist separator (3), an oil vapor adsorption filter (4), and an oxygen adsorption filter (5); the vortex tube condenser (2) is provided with a vortex tube inlet flange (21) at its inlet, which is connected to the atmospheric side interface pipe (111b) of a pressure-adjustable single-channel single-valve plate breather valve (1), the cold end pipe (22) of which is machined with external threads, the hot end pipe (23) of which is provided with a hot end pipe outlet flange (25), and heat dissipation fins (24) are provided on the upper part of the hot end pipe (23); the condensate oil mist separator (3) comprises a separator body (31), a separator inlet bend (32), a residual gas check valve (33a), and a condensate oil check valve (33b). b); The upper end of the separator inlet bend (32) is machined with an internal thread, and is assembled with the external thread of the cold end pipe (22) of the vortex tube condenser (2); The separator body (31) is an inverted cylindrical boss structure, with residual gas check valve mounting threaded holes (34a) and condensate oil check valve mounting threaded holes (34b) machined at the center of its top and bottom, respectively, and residual gas check valve (33a) and condensate oil check valve (33b) are respectively assembled thereon; The residual gas check valve (33a) and condensate oil check valve (33b) have the same structure, both including a check valve seat (331), a check valve cover (332), a sealing ball (333), a sealing spring (334) and a check valve outlet pipe (335), the check valve cover (332) presses the sealing ball (333) against the valve port of the check valve seat (331) through the sealing spring (334) to achieve a one-way sealing effect; The residual gas check valve (33a) and condensate oil check valve (33b) have the same structure, and are assembled with the external thread of ... The outlet pipe of the gas check valve (33a) is connected to the atmospheric side vent pipe (114b) of the breather valve housing (11) via a rubber hose. The outlet pipe of the condensate check valve (33b) is connected to the tank side vent pipe (114a) of the breather valve housing (11) via a rubber hose and a three-way pipe. The filter housing (41) and filter end cap (42) of the oil vapor adsorption filter (4) are connected by flanges and bolts. The cylindrical space enclosed by the two is filled with activated carbon particles (45). Its inlet flange pipe (43) is connected to the hot end pipe outlet flange of the vortex tube condenser (2). The housing (51) and filter end cap (52) of the oxygen adsorption filter (5) are connected by flanges and bolts. The cylindrical space enclosed by the two is filled with HDY type deoxidizer particles (55). Its inlet flange pipe (53) is connected to the outlet flange pipe (44) of the oil vapor adsorption filter (4). The outlet flange pipe (54) is directly connected to the atmosphere. (1) When the internal pressure of the storage tank exceeds the rated working range, the pressure adjustable single-channel single-valve plate breather valve (1) opens, and the high-pressure oil vapor enters the vortex tube condenser (2). A portion of the oil vapor is cooled through the cold end pipe (22) to form an oil mist mixture and is discharged, while a portion of the oil vapor is discharged through the hot end pipe (23). (1.1) The oil mist mixture discharged from the cold end pipe (22) enters the separator body (31) again through the separator inlet bend (32) of the condenser oil mist separator (3), and forms a vortex inside the separator body (31). The heavier condensed oil droplets are separated and thrown onto the inner wall of the separator body (31) and collect at the bottom of the separator body (31). The oil vapor remaining inside the separator body (31) opens the residual gas check valve (33a) due to the pressure, and enters the vortex tube condenser (2) again through the rubber tube and the atmospheric side vent pipe (114b) of the breather valve housing (11). (1.2) The oil vapor discharged from the hot end pipe (23) is at a high temperature. When it flows over the top of the hot end pipe (23), it is cooled by the heat dissipation fins (24). Then the oil vapor enters the oil vapor adsorption filter (4) and is adsorbed by the activated carbon particles (45) inside it. Finally, the remaining small amount of oil vapor is discharged into the atmosphere through the oxygen adsorption filter (5), thereby reducing the amount of oil vapor pollutants discharged from the storage tank into the atmosphere. (2) When the internal pressure of the storage tank is lower than the rated working range, the pressure adjustable single-channel single-valve plate breather valve (1) is opened, and the air in the atmosphere is replenished to the storage tank in sequence through the oxygen adsorption filter (5), the vortex tube condenser (2) and the pressure adjustable single-channel single-valve plate breather valve (1) to achieve pressure balance. (2.1) When air flows through the oxygen adsorption filter (5), the oxygen in the air will be absorbed by the HDY type deoxidizer particles (55), thereby reducing the oxygen content of the gas entering the storage tank, reducing the oxygen content of the gas inside the storage tank, and reducing the risk of deflagration inside the storage tank. (2.2) At the same time, the low pressure inside the storage tank will cause the oil vapor adsorbed by the activated carbon particles (45) to be released again and return to the storage tank, thereby achieving pressure balance and oil vapor recovery in the storage tank; the liquid oil collected by the separator body (31) of the condensate oil mist separator (3) will also open the condensate oil check valve (33b) under pressure and enter the storage tank through the rubber tube, the three-way tube, the storage tank side vent pipe (114a) of the breather valve housing (11), and the storage tank side interface pipe (111a); thereby achieving the recovery of the oil vapor emitted in the early stage.

Images