CN111734955B - Methane bidirectional pressure safety protector - Google Patents

Methane bidirectional pressure safety protector Download PDF

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Publication number
CN111734955B
CN111734955B CN202010634866.3A CN202010634866A CN111734955B CN 111734955 B CN111734955 B CN 111734955B CN 202010634866 A CN202010634866 A CN 202010634866A CN 111734955 B CN111734955 B CN 111734955B
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China
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fixed
pressure water
circular
water seal
cylindrical
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CN202010634866.3A
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Chinese (zh)
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CN111734955A (en
Inventor
王伟
陆荣春
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Nanjing Tianren Environmental Protection Equipment Co ltd
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Nanjing Tianren Environmental Protection Equipment Co ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/12—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/08—Mounting arrangements for vessels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/01—Mounting arrangements
    • F17C2205/0153—Details of mounting arrangements
    • F17C2205/0157—Details of mounting arrangements for transport
    • F17C2205/0161—Details of mounting arrangements for transport with wheels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0332—Safety valves or pressure relief valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0388—Arrangement of valves, regulators, filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/04—Reducing risks and environmental impact
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/04—Reducing risks and environmental impact
    • F17C2260/042—Reducing risk of explosion

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Safety Valves (AREA)

Abstract

The invention discloses a methane two-way pressure safety protector which comprises a cylindrical tank body, wherein a hemispherical top cover is fixed on the top surface of the cylindrical tank body, a hemispherical bottom cover is fixed on the bottom surface of the cylindrical tank body, a bottom plate is fixed on the bottom surface of the cylindrical tank body, a positive pressure water seal tank and a negative pressure water seal tank are fixed on the bottom plate, two ends of a methane main pipe are fixed on the side surface of the cylindrical tank body, a branch pipe is fixed at the center of the side surface of the methane main pipe, one end of a positive pressure water seal branch pipe is fixed on the branch pipe, the other end of the positive pressure water seal branch pipe is connected with the positive pressure water seal tank, one end of the negative pressure water seal branch pipe is fixed on the branch pipe, the other end of a first diffusion pipe is fixed on the top surface of the positive pressure water seal tank, the other end of the first diffusion pipe is fixed on the hemispherical top cover, and one end, close to the hemispherical top cover, of the first diffusion pipe, is fixed with a fire prevention valve. The invention can improve the defects of the prior art, can realize the bidirectional pressure protection of the methane on one hand, and has excellent fireproof effect on the other hand.

Description

Methane bidirectional pressure safety protector
Technical Field
The invention relates to a safety protector, in particular to a methane bidirectional pressure safety protector.
Background
Along with the gradual enhancement of the environmental awareness of people, people have more and more demands on clean energy, and the marsh gas is used as clean energy and is widely applied, but the marsh gas is influenced by various factors in the using process, the pressure changes within a certain range, and the safety of a container is possibly influenced to a certain extent.
Disclosure of Invention
The invention aims to provide a methane bidirectional pressure safety protector, which can realize methane bidirectional pressure protection on one hand and has excellent fireproof effect on the other hand.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows.
A biogas two-way pressure safety protector comprises a cylindrical tank body, wherein a hemispherical top cover is fixed on the top surface of the cylindrical tank body, a hemispherical bottom cover is fixed on the bottom surface of the cylindrical tank body, a bottom plate is fixed on the bottom surface of the cylindrical tank body, a positive pressure water seal tank and a negative pressure water seal tank are fixed on the bottom plate, one end of a first water injection pipe is fixed on the side surface of the cylindrical tank body, the other end of the first water injection pipe is connected with the positive pressure water seal tank, one end of a second water injection pipe is fixed on the side surface of the cylindrical tank body, the other end of the second water injection pipe is connected with the negative pressure water seal tank, two ends of a main biogas pipe are fixed on the side surface of the cylindrical tank body, a branch pipe is fixed at the center of the side surface of the main biogas pipe, one end of a positive pressure water seal branch pipe is fixed on the branch pipe, the other end of the positive pressure water seal branch pipe is connected with the positive pressure water seal tank, one end of the negative pressure water seal branch pipe is fixed on the branch pipe, the other end of the negative pressure water seal tank is connected with the negative pressure water seal pipe, one end of a first diffusion pipe is fixed on the top surface of the positive pressure water seal tank, the other end of the first diffusion pipe is fixed on the hemispherical top cover, one end of the second diffusion pipe is fixed on the negative pressure water seal tank, the other end of the second diffusion pipe is fixed on the hemispherical top cover, a fire-proof valve is fixed at one end of the first diffusion pipe close to the hemispherical top cover, a water outlet is fixed at the bottom of the side surface of the cylindrical tank body, a sewage outlet is arranged at the bottom of the hemispherical bottom cover, four support legs are uniformly fixed at the bottom surface of the cylindrical tank body, the fire-proof valve comprises a cylindrical fire-proof valve body, a circular table exhaust port is fixed at the top surface of the cylindrical fire-proof valve body, a cylindrical air inlet is arranged at the bottom surface of the cylindrical fire-proof valve body, a circular air filter plate is fixed at the side surface of the cylindrical air inlet, the circular air filter plate is provided with a plurality of first round holes, one end of the lever mechanism is connected with a vertical rod in a shaft mode, a spring is connected in a sleeve mode at the center of the circular air filter plate, the round isolation valve comprises a round isolation valve body, the round isolation valve body is sleeved on a cylindrical fire-proof valve body, a central hole is formed in the round isolation valve body, the vertical rod is sleeved in the central hole, a sliding rail is fixed to the round isolation valve body, a plurality of second round holes are symmetrically formed in two ends of the sliding rail, the lever mechanism comprises a lever body, one end of the lever body is connected to the vertical rod in a shaft mode, the other end of the lever body is connected to a clamping key in a shaft mode, the clamping key is connected to the sliding rail in a clamping mode, one end of a fulcrum is fixed to the top surface of the round air filtering plate, and the other end of the fulcrum is connected to the middle point of the lever body in a shaft mode.
Preferably, the bottom plate comprises a circular bottom plate body, and the circular bottom plate body is provided with a plurality of third round holes.
Preferably, universal wheels are mounted at the bottoms of the supporting legs.
Preferably, an elastic ring is fixed on the inner side surface of the circular truncated cone exhaust port.
Adopt the beneficial effect that above-mentioned technical scheme brought to lie in: in the normal operation state of the invention, the biogas presents a certain positive pressure. The protection value set by the positive pressure water seal is greater than the biogas operation pressure. The positive pressure water seal and the negative pressure water seal are both in a normal closed state. In the state of ultrahigh positive pressure, the biogas presents higher positive pressure. The protection value set by the positive pressure water seal is smaller than the biogas operation pressure. The biogas breaks through the positive pressure water seal and is discharged from the first diffusion pipe, so that the cylindrical tank body is protected from being burst. The negative pressure water seal tank, the water level rises, makes the negative pressure water seal in the closed condition. Under the ultra-low negative pressure state, the biogas presents lower negative pressure. The water in the positive pressure water seal tank is absorbed by ultra-low negative pressure and enters a certain water level height of the negative pressure water seal branch pipe to keep balance, and the positive pressure water seal is sealed by the water. The negative pressure water seal breaks through the negative pressure water seal when being opened under the ultralow negative pressure, air enters the negative pressure water seal branch pipe from the second relief pipe, and the cylindrical tank body is not shriveled and collapsed by the negative pressure. Furthermore, when biogas is discharged from the first diffusion pipe under ultrahigh positive pressure, and an open fire may happen, a fire prevention valve is fixed at one end of the first diffusion pipe close to the hemispherical top cover, but the current fire prevention valve generally has the defects of not tight valve closing or slow closing action. When flame enters the fire damper body through the circular truncated cone exhaust port, the gas expands to push the circular isolating valve to move towards the circular gas filtering plate, meanwhile, the clamping key moves to the second round hole along the sliding rail and pushes the lever body to push the vertical rod to move towards the direction of the circular truncated cone exhaust port under the action of the fulcrum, finally, the circular isolating valve is in compression joint with the cylindrical air inlet to seal the cylindrical air inlet, meanwhile, the round air filter plate is sealed by the clamping key, the round air filter plate and the round air filter plate prevent methane from entering, the round air outlet is sealed by the spherical valve body, air is prevented from entering, the three seals are synchronously completed, the sealing is simple and quick, an organic unified whole is formed, air is isolated, meanwhile, the methane is isolated, furthermore, as the lever design is adopted, the expansion gas continuously pushes the round isolating valve, under the effect of moment, three kinds of closed modes are continuous to interact to whole fire behavior has been promoted. The bottom plate includes circular bottom plate body, and circular bottom plate body is equipped with a plurality of third round holes, can realize the prefilter to the waste liquid. The universal wheels are arranged at the bottoms of the supporting legs, so that the whole movement of the invention is facilitated. The elastic ring is fixed on the inner side surface of the circular truncated cone exhaust port, and when the fire extinguishing action is started, the spherical valve body is in compression joint with the elastic ring, so that the sealing effect is more favorably realized, air is blocked from entering, and the fire extinguishing performance is favorably improved.
Drawings
FIG. 1 is a block diagram of one embodiment of the present invention.
Fig. 2 is a block diagram of a base plate in an embodiment of the present invention.
Fig. 3 is a block diagram of a fire damper in accordance with an embodiment of the present invention.
FIG. 4 is a block diagram of a circular isolation valve in accordance with one embodiment of the present invention.
FIG. 5 is a cross-sectional structural view A-A of FIG. 4 in accordance with an embodiment of the present invention.
Fig. 6 is a sectional structural view of B-B of fig. 4 in accordance with an embodiment of the present invention.
Fig. 7 is a structural view of a lever mechanism in an embodiment of the present invention.
In the figure: 1. a cylindrical can body; 2. a hemispherical top cover; 3. a hemispherical bottom cover; 4. a first water injection pipe; 5. sealing the tank with positive pressure water; 6. sealing the tank with negative pressure water; 7. a positive pressure water seal branch pipe; 8. a negative pressure water seal branch pipe; 9. a biogas main pipe; 10. a second diffusing pipe; 11. a first diffusing pipe; 12. a second water injection pipe; 13. a fire damper; 14. a water outlet; 15. a base plate; 16. a sewage draining outlet; 17. a support leg; 18. a universal wheel; 19. a branch pipe; 151. a circular base plate body; 152. a third circular hole; 131. a cylindrical fire damper body; 132. a circular truncated cone exhaust port; 133. a vertical rod; 134. a circular isolation valve; 135. a circular gas filter plate; 136. a spring; 137. a lever mechanism; 138. a cylindrical air inlet; 139. a spherical valve body; 140. an elastic ring; 141. a first circular hole; 1341. a circular isolation valve body; 1342. a slide rail; 1343. a central bore; 1344. a second circular hole; 13421. a slide rail body; 13422. a card slot; 13423. a triangular prism spring washer; 13424. a rectangular groove; 13425. a spring plate; 13426. a square groove; 1371. a lever body; 1372. a card key; 13473. a fulcrum point.
Detailed Description
The standard parts used in the invention can be purchased from the market, the special-shaped parts can be customized according to the description and the description of the attached drawings, and the specific connection mode of each part adopts the conventional means of mature bolts, rivets, welding, sticking and the like in the prior art, and the detailed description is not repeated.
Referring to fig. 1-7, one embodiment of the present invention comprises a cylindrical tank 1, a hemispherical top cap 2 fixed to the top surface of the cylindrical tank 1, a hemispherical bottom cap 3 fixed to the bottom surface of the cylindrical tank 1, a bottom plate 15 fixed to the bottom surface of the cylindrical tank 1, a positive pressure water seal tank 5 and a negative pressure water seal tank 6 fixed to the bottom plate 15, a first water injection pipe 4 having one end fixed to the side surface of the cylindrical tank 1 and the other end connected to the positive pressure water seal tank 5, a second water injection pipe 12 having one end fixed to the side surface of the cylindrical tank 1 and the other end connected to the negative pressure water seal tank 6, a main biogas pipe 9 having two ends fixed to the side surface of the cylindrical tank 1, a branch pipe 19 fixed to the center of the side surface of the main biogas pipe 9, a positive pressure water seal branch pipe 7 having one end fixed to the branch pipe 19, a positive pressure water seal pipe 7 having the other end connected to the positive pressure water seal tank 5, and a negative pressure water seal branch pipe 8 having one end fixed to the branch pipe 19, the other end of the negative pressure water seal branch pipe 8 is connected with the negative pressure water seal tank 6, one end of a first diffusing pipe 11 is fixed on the top surface of the positive pressure water seal tank 5, the other end of the first diffusing pipe 11 is fixed on the hemispherical top cover 2, one end of a second diffusing pipe 10 is fixed on the negative pressure water seal tank 6, the other end of the second diffusing pipe 10 is fixed on the hemispherical top cover 2, one end of the first diffusing pipe 11 close to the hemispherical top cover 2 is fixed with a fire damper 13, the bottom of the side surface of the cylindrical tank body 1 is fixed with a water outlet 14, the bottom of the hemispherical bottom cover 3 is provided with a sewage outlet 16, the bottom of the cylindrical tank body 1 is uniformly fixed with four supporting legs 17, the fire damper 13 comprises a cylindrical fire damper body 131, the top surface of the cylindrical fire damper body 131 is fixed with a circular table exhaust port 132, the bottom of the cylindrical fire damper body 131 is provided with a cylindrical air inlet 138, the side surface of the cylindrical air inlet 138 is fixed with a circular air filter plate 135, the circular air filter plate 135 is provided with a plurality of first circular hole 141, one end of the lever mechanism 137 is coupled to the vertical rod 133 by a shaft, one end of the lever mechanism 137 is fixedly coupled to the bottom surface of the circular isolation valve 134 by a shaft, the center of the circular air filter plate 135 is sleeved with the vertical rod 133, the vertical rod 133 is sleeved with the spring 136, one end of the spring 136 is fixed to the center of the circular air filter plate 135, the other end of the spring 136 is fixed to the center of the circular isolation valve 134, the top of the vertical rod 133 near the inner side surface of the circular truncated cone exhaust port 132 is fixed with the spherical valve body 139, the circular isolation valve 134 comprises a circular isolation valve body 1341, the circular isolation valve body 1341 is sleeved to the cylindrical fire valve body 131, the circular isolation valve body 1341 is provided with a central hole 1343, the central hole 1343 is sleeved with the vertical rod 133, the circular isolation valve body 1341 is fixed with a sliding rail 1342, two ends of the sliding rail 1342 are symmetrically provided with a plurality of second circular holes 1344, the lever mechanism 137 comprises a lever body 1371, one end of the lever body 1371 is coupled to the vertical rod 133 by a shaft, the other end of the lever body 1371 is coupled to the clamp 1372, the latch 1372 is latched to the slide rail 1342, one end of the pivot 1373 is fixed to the top surface of the circular filter plate 135, and the other end of the pivot 1373 is coupled to the middle point of the lever body 1371. In the normal operation state of the invention, the biogas presents a certain positive pressure. The protection value set by the positive pressure water seal is greater than the biogas operation pressure. The positive pressure water seal and the negative pressure water seal are both in a normal closed state. In the state of ultrahigh positive pressure, the biogas presents higher positive pressure. The protection value set by the positive pressure water seal is smaller than the biogas operation pressure. The marsh gas breaks through the positive pressure water seal and is discharged from the first diffusing pipe 11, and the cylindrical tank body 1 is protected from bursting. And (5) sealing the tank 6 with negative pressure water, wherein the water level rises to enable the negative pressure water seal to be in a closed state. Under the ultra-low negative pressure state, the biogas presents lower negative pressure. The water in the positive pressure water seal tank 5 is sucked by ultra-low negative pressure to enter a certain water level height of the negative pressure water seal branch pipe 8 and then keeps balance, and the positive pressure water seal is sealed by the water. The negative pressure water seal breaks through the negative pressure water seal when the negative pressure water seal is under the ultra-low negative pressure, air enters the negative pressure water seal branch pipe 8 from the second relief pipe 10, and the cylindrical tank body 1 is not shriveled by the negative pressure. Further, when biogas is discharged from the first diffusion pipe 11 under ultrahigh positive pressure, and there is a possibility of accidental fire, a fire prevention valve 13 is fixed at one end of the first diffusion pipe 11 close to the hemispherical top cover 2, but the current fire prevention valve generally has the disadvantages of not tight valve closing or slow closing action. When flame enters the fire damper body 131 through the circular table exhaust port 132, gas expands to push the circular isolation valve 134 to move towards the circular table exhaust port 135, meanwhile, the clamp key 1372 moves towards the second circular hole 1344 along the slide rail, and the lever body 1371 pushes the vertical rod 133 to move towards the circular table exhaust port 132 under the action of the fulcrum 1373, finally, the circular isolation valve 134 is in pressure connection with the cylindrical air inlet 138 to seal the cylindrical air inlet 138, meanwhile, the clamp key 1372 seals the circular table exhaust port 135, both prevent methane from entering, the spherical valve body 139 seals the circular table exhaust port 132 to prevent air from entering, the three seals are completed synchronously, the sealing is simple and fast, an organic unified whole is formed, air and methane are isolated, further, because of the lever design, the expansion gas continuously pushes the circular isolation valve 134, under the action of moment, the three sealing modes continuously interact with each other, thereby improving the overall fire performance.
In addition, slide rail 1342 includes slide rail body 13421, slide rail body 13421 bottom surface is fixed in circular isolation valve body 1341 bottom surface, slide rail body 13421 top surface is equipped with draw-in groove 13422, draw-in groove 13422 bottom surface is equipped with square recess 13426, square recess 13426 bottom surface border symmetry is equipped with cuboid recess 13424, the fixed symmetry in cuboid recess 13424 bottom surface is fixed with two shell fragments 13425, shell fragment 13425 one end is fixed in cuboid recess 13424 bottom surface, the shell fragment 13425 other end is fixed in triangular prism bullet pad 13423. When starting the action of putting out a fire, the card key 1372 is along draw-in groove 13422 during to the motion of second round hole 1344, card key 1372 extrudes triangular prism bullet pad 13423, and further extrude shell fragment 13425, realized card key 1372 at square recess 13426 and triangular prism bullet pad 13423 elastic crimping, thereby circular isolation valve 134 and 138 elastic crimping of cylinder air inlet have indirectly been realized, spherical valve body 139 and round platform gas vent 132 elastic crimping, elastic pressure's existence, the sealed effect of three has been promoted, effectively isolated with the air supply, thereby whole fire behavior has been improved.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (4)

1. The utility model provides a two-way pressure protector of marsh gas, includes cylindrical jar body (1), cylindrical jar body (1) top surface is fixed with hemisphere top cap (2), and cylindrical jar body (1) bottom surface is fixed with hemisphere bottom (3), and cylindrical jar body (1) bottom surface is fixed with bottom plate (15), its characterized in that: a positive pressure water seal tank (5) and a negative pressure water seal tank (6) are fixed on the bottom plate (15), one end of a first water injection pipe (4) is fixed on the side surface of the cylindrical tank body (1), the other end of the first water injection pipe (4) is connected with the positive pressure water seal tank (5), one end of a second water injection pipe (12) is fixed on the side surface of the cylindrical tank body (1), the other end of the second water injection pipe (12) is connected with the negative pressure water seal tank (6), two ends of a methane main pipe (9) are fixed on the side surface of the cylindrical tank body (1), a branch pipe (19) is fixed on the center of the side surface of the methane main pipe (9), one end of the positive pressure water seal branch pipe (7) is fixed on the branch pipe (19), the other end of the positive pressure water seal branch pipe (7) is connected with the positive pressure water seal tank (5), one end of the negative pressure water seal branch pipe (8) is fixed on the branch pipe (19), the other end of the negative pressure water seal branch pipe (8) is connected with the negative pressure water seal tank (6), one end of a first release pipe (11) is fixed on the top surface of the positive pressure water seal tank (5), the other end of the first diffusing pipe (11) is fixed on the hemispherical top cover (2), one end of the second diffusing pipe (10) is fixed on the negative pressure water-sealed tank (6), the other end of the second diffusing pipe (10) is fixed on the hemispherical top cover (2), one end of the first diffusing pipe (11) close to the hemispherical top cover (2) is fixed with a fire damper (13), the bottom of the side surface of the cylindrical tank body (1) is fixed with a water outlet (14), the bottom of the hemispherical bottom cover (3) is provided with a sewage outlet (16), the bottom surface of the cylindrical tank body (1) is uniformly fixed with four supporting legs (17), the fire damper (13) comprises a cylindrical fire damper body (131), the top surface of the cylindrical fire damper body (131) is fixed with a circular table exhaust port (132), the bottom surface of the cylindrical fire damper body (131) is provided with a cylindrical air inlet (138), the side surface of the cylindrical air inlet (138) is fixed with a circular air filter plate (135), and the circular air filter plate (135) is provided with a plurality of first round holes (141), one end of a lever mechanism (137) is connected with a vertical rod (133) in a shaft mode, one end of the lever mechanism (137) is fixedly connected to the bottom surface of a circular isolating valve (134) in a fixed mode, the center of a circular air filtering plate (135) is sleeved with the vertical rod (133), the vertical rod (133) is sleeved with a spring (136), one end of the spring (136) is fixed to the center of the circular air filtering plate (135), the other end of the spring (136) is fixed to the center of the circular isolating valve (134), a spherical valve body (139) is fixed to the inner side face, close to a circular table exhaust port (132), of the top of the vertical rod (133), the circular isolating valve (134) comprises a circular isolating valve body (1341), the circular isolating valve body (1341) is sleeved with a cylindrical fire valve body (131), a center hole (1343) is formed in the circular isolating valve body (1341), the vertical rod (133) is sleeved with the center hole (1343), a sliding rail (1342) is fixed to the circular isolating valve body (1341), a plurality of second round holes (1344) are symmetrically formed in two ends of the sliding rail (1342), lever mechanism (137) include lever body (1371), and lever body (1371) one end coupling is in vertical rod (133), and lever body (1371) other end and card key (1372) coupling, card key (1372) joint in slide rail (1342), and fulcrum (1373) one end is fixed in circular gas filter plate (135) top surface, and fulcrum (1373) other end hub connection is in lever body (1371) midpoint.
2. The bidirectional biogas pressure protector according to claim 1, wherein: the bottom plate (15) comprises a circular bottom plate body (151), and the circular bottom plate body (151) is provided with a plurality of third round holes (152).
3. The bidirectional biogas pressure protector according to claim 1, wherein: universal wheels (18) are mounted at the bottoms of the supporting legs (17).
4. The bidirectional biogas pressure protector according to claim 1, wherein: an elastic ring (140) is fixed on the inner side surface of the circular truncated cone exhaust port (132).
CN202010634866.3A 2020-07-04 2020-07-04 Methane bidirectional pressure safety protector Active CN111734955B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1670407A (en) * 2004-03-16 2005-09-21 卢森堡专利公司 Valve with counternut
CN201582461U (en) * 2009-10-23 2010-09-15 中国石油化工股份有限公司 Integrated two-way liquid sealing device
CN102135198A (en) * 2011-03-29 2011-07-27 李武鸿 Guide fireproofing check valve
CN202790759U (en) * 2012-08-09 2013-03-13 四川顶点建筑工程有限公司 Fire retardant device with single-way safe valve
CN105861281A (en) * 2016-04-26 2016-08-17 山东百川同创能源有限公司 Maintenance-free tank body integrated positive/negative-pressure protector
CN110260008A (en) * 2019-06-19 2019-09-20 蓝晶晶 A kind of gas control valve

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1390874B1 (en) * 2008-07-31 2011-10-19 Cavagna Group Switzerland S A DEVICE FOR PREVENTING THE OCCUPANCY OF CONTAINERS, IN PARTICULAR TANKS INTENDED TO CONTAIN LIQUEFIED GASES

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1670407A (en) * 2004-03-16 2005-09-21 卢森堡专利公司 Valve with counternut
CN201582461U (en) * 2009-10-23 2010-09-15 中国石油化工股份有限公司 Integrated two-way liquid sealing device
CN102135198A (en) * 2011-03-29 2011-07-27 李武鸿 Guide fireproofing check valve
CN202790759U (en) * 2012-08-09 2013-03-13 四川顶点建筑工程有限公司 Fire retardant device with single-way safe valve
CN105861281A (en) * 2016-04-26 2016-08-17 山东百川同创能源有限公司 Maintenance-free tank body integrated positive/negative-pressure protector
CN110260008A (en) * 2019-06-19 2019-09-20 蓝晶晶 A kind of gas control valve

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