CN110748792A - Natural gas storage tank overvoltage detection and pressure relief device - Google Patents

Natural gas storage tank overvoltage detection and pressure relief device Download PDF

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Publication number
CN110748792A
CN110748792A CN201911072500.5A CN201911072500A CN110748792A CN 110748792 A CN110748792 A CN 110748792A CN 201911072500 A CN201911072500 A CN 201911072500A CN 110748792 A CN110748792 A CN 110748792A
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CN
China
Prior art keywords
cavity
storage tank
piston
tank body
pressure
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Granted
Application number
CN201911072500.5A
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Chinese (zh)
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CN110748792B (en
Inventor
李箐
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Qian'an yihuida new energy Co., Ltd
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Ningbo Zhenhai Hebing Energy Technology Co Ltd
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Priority to CN201911072500.5A priority Critical patent/CN110748792B/en
Publication of CN110748792A publication Critical patent/CN110748792A/en
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Publication of CN110748792B publication Critical patent/CN110748792B/en
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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
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
    • 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
    • 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
    • F17C2205/0338—Pressure regulators
    • 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
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0107—Single phase
    • F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
    • 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
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/06—Controlling or regulating of parameters as output values
    • F17C2250/0605—Parameters
    • F17C2250/0626—Pressure
    • 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
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/07—Actions triggered by measured parameters
    • F17C2250/072—Action when predefined value is reached

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

The invention discloses an overpressure detection and pressure relief device for a natural gas storage tank, which comprises a storage tank body, wherein an auxiliary storage tank body is arranged on the upper side of the storage tank body, a transmission cavity is arranged in the storage tank body, a storage cavity is arranged in the storage tank body, a transmission mechanism for providing power for the device is arranged in the transmission cavity, a sensing and warning mechanism for sensing the pressure in the storage cavity is arranged at the right end in the auxiliary storage tank body, a gas release mechanism for releasing the pressure in the storage cavity when the storage cavity is in overpressure is arranged at the left end in the auxiliary storage tank body, the device can automatically sense the pressure in the storage tank when in work and can display the pressure through pointer scales, and when the pressure in the storage tank is too high, the device can automatically start the pressure relief device and start an overpressure alarm device, so that the safety.

Description

Natural gas storage tank overvoltage detection and pressure relief device
Technical Field
The invention relates to the field of natural gas, in particular to an overvoltage detection and pressure relief device for a natural gas storage tank.
Background
The natural gas is mainly used as fuel, can be used for producing carbon black, chemicals and liquefied petroleum gas, propane and butane produced by the natural gas are important raw materials of modern industry, and the natural gas belongs to flammable and explosive gas and needs to be stored in a sealed mode.
At present, when natural gas is stored, the natural gas is stored under pressure in order to increase the storage capacity, and when the natural gas is pressurized beyond the maximum bearing pressure range of the container, the container may be burst, and the safety of surrounding personnel can be endangered.
Disclosure of Invention
The invention aims to solve the technical problem of providing an overvoltage detection and pressure relief device for a natural gas storage tank, which overcomes the problems of timely detecting an overvoltage state, incapability of timely relieving pressure and the like, and increases an overvoltage detection function and a pressure relief function.
The invention is realized by the following technical scheme.
The invention discloses an overpressure detection and pressure relief device for a natural gas storage tank, which comprises a storage tank body, wherein an auxiliary storage tank body is arranged on the upper side of the storage tank body, a transmission cavity is arranged in the storage tank body, a storage cavity is arranged in the storage tank body, a transmission mechanism for providing power for the device is arranged in the transmission cavity, an induction warning mechanism for inducing the pressure in the storage cavity is arranged at the right end in the auxiliary storage tank body, and a pressure relief mechanism for relieving the pressure when the pressure in the storage cavity is overpressure is arranged at the left end in the auxiliary storage tank body;
the induction warning mechanism comprises a piston cavity which is positioned at the right end of the auxiliary storage tank body and has a downward opening, the lower end of the piston cavity is fixedly provided with an air leakage block, a piston block which can slide up and down in the cavity is arranged in the piston cavity, the upper side of the piston cavity is provided with a power-on cavity, the upper end surface of the piston block is fixedly provided with a short rod the upper end of which extends into the power-on cavity, the left end surface of the lower end of the short rod is provided with a rack, a movable power-on block which can move up and down in the cavity is arranged in the power-on cavity, the upper end of the power-on cavity is fixedly provided with a fixed power-on block, the upper end surface of the fixed power-on block is electrically connected with an electric wire and a lead wire, the other end of the electric wire is electrically connected with a warning lamp, the right cavity wall of the upper end of the piston cavity is provided with an air inlet communicated, a second torsion spring is arranged between the rotating rod and the left cavity wall of the piston cavity for connection, the right end of the rotating rod is provided with a ratchet wheel meshed and connected with the rack on the short rod, twelve rotating cavities are arranged in the ratchet wheel and are distributed at equal intervals, fixed rods are fixedly arranged on the left cavity wall and the right cavity wall in the rotating cavities, rotating teeth are arranged on the fixed rods, a first torsion spring is arranged between the rotating teeth and the fixed rods for connection, the left end of the rotating rod is provided with a driving belt wheel positioned in a first driven cavity, the left cavity wall and the right cavity wall of the second transmission cavity are rotatably connected with a rotating shaft, the right end of the rotating shaft is provided with a driven belt wheel, a belt rotatably connected with the driving belt wheel is arranged on the driven belt wheel, the left end of the rotating shaft is provided with a first bevel gear, the upper end surface of the auxiliary storage tank body is fixedly provided with a dial plate, a second bevel gear in meshed connection with the first bevel gear is arranged at the lower end of the rotating shaft, and a pointer positioned in the dial plate is arranged at the upper end of the rotating shaft;
the device passes through the size of the interior pressure of response warning mechanism response accumulator then can start the device through response warning mechanism when exceeding certain pressure, by drive mechanism provides power, through lose heart mechanism unloads unnecessary pressure in the accumulator.
Further, drive mechanism is including fixing the motor on the transmission chamber cavity wall down, motor upper end power connection has the transmission shaft, motor right-hand member electricity is connected with wire one end, the transmission shaft lower extreme is equipped with the rope winding wheel, the winding is equipped with the stay cord on the rope winding wheel, the transmission shaft upper end is equipped with drive sprocket, the last connection of drive sprocket is equipped with the chain.
Further, the air leakage mechanism comprises an auxiliary storage cavity positioned at the left end in the auxiliary storage tank body, the left side of the transmission cavity is provided with a fan cavity, the lower end of the fan cavity is communicated with the storage cavity, a fixing plate is fixedly arranged on the cavity wall at the lower end in the fan cavity, a fan shaft is rotatably connected onto the fixing plate, the lower end of the fan shaft is provided with a driven sprocket, the driven sprocket is rotatably connected with the rope winding wheel through the chain, two fan blades are arranged at the upper end of the fan shaft, the right cavity wall of the auxiliary storage cavity is provided with a through hole communicated with the fan cavity, the lower cavity wall of the through hole is provided with a piston plate cavity, a piston plate capable of sliding up and down in the cavity is arranged in the piston plate cavity, an elastic spring is fixedly arranged on the lower end surface of the piston plate and is connected with the lower cavity wall of the piston plate cavity, the lower end surface of the, an electromagnetic switch is arranged in the through hole.
Further, the elastic force of the elastic spring is larger than the sum of the friction force received by the piston plate when the piston plate slides in the piston plate cavity and the gravity of the piston plate.
Further, the pulling force of the elastic spring is larger than the friction force applied to the piston block when the piston block slides in the piston cavity.
In an initial state, the piston block is positioned at the lower end of the piston cavity, the ratchet wheel is arranged on the upper side of the rack on the short rod, and the ratchet wheel and the rack are in a disengaged state.
The invention has the beneficial effects that: the device simple structure, the simple operation, the device can the pressure in the auto-induction holding vessel at the during operation to show through the pointer scale, when pressure was too big in the holding vessel, the device can the automatic start pressure relief device and open excessive pressure alarm device, improved the safe handling nature that the natural gas stored.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram at A-A of FIG. 1 in accordance with an embodiment of the present invention;
FIG. 3 is a left side view of the ratchet shown in FIG. 1;
fig. 4 is a schematic structural view of a short rod in a full-section in the embodiment of the invention shown in fig. 1.
Detailed Description
The invention will now be described in detail with reference to fig. 1-4, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.
The natural gas storage tank overvoltage detection and pressure relief device described in conjunction with the attached fig. 1-4 comprises a storage tank body 10, wherein an auxiliary storage tank body 28 is arranged on the upper side of the storage tank body 10, a transmission cavity 65 is arranged in the storage tank body 10, a storage cavity 12 is arranged in the storage tank body 10, a transmission mechanism 64 for providing power for the device is arranged in the transmission cavity 65, a sensing warning mechanism 45 for sensing the pressure in the storage cavity 12 is arranged at the inner right end of the auxiliary storage tank body 28, an air release mechanism 27 for releasing the pressure when the pressure is over-pressed in the storage cavity 12 is arranged at the inner left end of the auxiliary storage tank body 28, the sensing warning mechanism 45 comprises a piston cavity 59 which is positioned at the right end of the auxiliary storage tank body 28 and has a downward opening, an air release block 11 is fixedly arranged at the lower end of the piston cavity 59, a piston block 58 which can slide up and down in the cavity is arranged in the piston cavity, the upper end face of the piston block 58 is fixedly provided with a short rod 13, the upper end of the short rod extends into the electrifying cavity 52, the left end face of the lower end of the short rod 13 is provided with a rack 69, the electrifying cavity 52 is internally provided with a movable electrifying block 66 capable of moving up and down in the cavity, the upper end of the electrifying cavity 52 is fixedly provided with a fixed electrifying block 51, the upper end face of the fixed electrifying block 51 is electrically connected with an electric wire 49 and a lead 50, the other end of the electric wire 49 is electrically connected with a warning lamp 46, the right cavity wall of the upper end of the piston cavity 59 is provided with an air inlet 48 communicated with the external space, the left side of the piston cavity 59 is provided with a first driven cavity 14, the upper side of the first driven cavity 14 is provided with a second transmission cavity 37, the left cavity wall of the first driven cavity 14 is rotatably connected with a rotating rod 56, the right end of which extends into the piston cavity 59, a second torsion spring 70 is arranged between the rotating rod 56 and the left, twelve rotating cavities 63 which are equidistantly distributed are arranged in the ratchet wheel 55, a fixing rod 60 is fixedly arranged on the left cavity wall and the right cavity wall in each rotating cavity 63, a rotating tooth 62 is arranged on each fixing rod 60, a first torsion spring 61 is arranged between each rotating tooth 62 and each fixing rod 60 for connection, a driving pulley 15 positioned in each first driven cavity 14 is arranged at the left end of each rotating rod 56, a rotating shaft 44 is rotatably connected with the left cavity wall and the right cavity wall of each second transmission cavity 37, a driven pulley 43 is arranged at the right end of each rotating shaft 44, a belt 47 rotatably connected with the driving pulley 15 is arranged on each driven pulley 43, a first bevel gear 42 is arranged at the left end of each rotating shaft 44, a dial plate 39 is fixedly arranged on the upper end face of each auxiliary storage tank body 28, a circle of scales 68 is arranged in each dial plate 39, a rotating shaft 40 with the upper cavity wall rotatably connected with the upper end extending into the dial plate 39 is arranged on the upper end, the upper end of the rotating shaft 40 is provided with a pointer 41 positioned in the dial 39, the device senses the pressure in the storage tank through the sensing warning mechanism 45, and when the pressure exceeds a certain pressure, the device can be started through the sensing warning mechanism 45, the transmission mechanism 64 provides power, and redundant pressure in the storage tank is discharged through the air release mechanism 27.
Advantageously, the transmission mechanism 64 includes a motor 16 fixed on the lower cavity wall of the transmission cavity 65, a transmission shaft 17 is dynamically connected to the upper end of the motor 16, one end of the wire 50 is electrically connected to the right end of the motor 16, a rope winding wheel 18 is arranged at the lower end of the transmission shaft 17, a pulling rope 20 is wound on the rope winding wheel 18, a driving sprocket 19 is arranged at the upper end of the transmission shaft 17, and a chain 21 is connected to the driving sprocket 19.
Beneficially, the air release mechanism 27 includes an auxiliary storage cavity 26 located at the left end in the auxiliary storage tank 28, the left side of the transmission cavity 65 is provided with a fan cavity 35 communicating with the storage cavity 12 at the lower end, a fixing plate 24 is fixedly arranged on the cavity wall at the lower end in the fan cavity 35, a fan shaft 22 is rotatably connected to the fixing plate 24, a driven sprocket 23 is arranged at the lower end of the fan shaft 22, the driven sprocket 23 is rotatably connected with the rope winding wheel 18 through the chain 21, two fan blades 36 are arranged at the upper end of the fan shaft 22, a through hole 34 communicating with the fan cavity 35 is arranged on the right cavity wall of the auxiliary storage cavity 26, a piston plate cavity 25 is arranged on the lower cavity wall of the through hole 34, a piston plate 33 capable of sliding up and down in the cavity is arranged in the piston plate cavity 25, an elastic spring 31 is fixedly arranged on the lower end face of the piston plate 33 and is connected with the lower cavity wall, the lower end face of the piston plate 33 is also fixedly connected with one end of the pull rope 20, the upper cavity wall of the auxiliary storage cavity 26 is provided with a through hole 30 communicated with the external space, and an electromagnetic switch 29 is arranged in the through hole 30.
Advantageously, the elastic force of the elastic spring 31 is greater than the sum of the friction force to which the piston plate 33 is subjected when sliding in the piston plate cavity 25 and the weight of the piston plate 33 itself.
Advantageously, the tension of the elastic spring 57 is greater than the friction to which the piston block 58 is subjected when sliding inside the piston chamber 59.
In the initial state, the piston block 58 is located at the lower end of the piston cavity 59, the ratchet wheel 55 is located on the upper side of the rack 69 on the short rod 13, and the ratchet wheel 55 is in a disengaged state with the rack 69.
Sequence of mechanical actions of the whole device:
1: when the device is in a non-detection pressure state, natural gas can be stored in the storage cavity 12 in the storage tank body 10 through the air inlet hole 48, the natural gas enters the piston cavity 59 from the air inlet hole 48, so that the piston block 58 is pushed to move downwards, the natural gas enters the storage cavity 12 from the air leakage block 11, and after the air inflation is stopped, the piston block 58 moves upwards under the action of the elastic spring 57 to reset and seal the storage cavity 12;
2: when the device is used for detecting pressure, when the pressure in the storage tank is overlarge, the piston block 58 moves upwards under the action of the air pressure in the storage cavity 12, so that the short rod 13 is pushed to move upwards, the movable electrifying block 66 is pushed to move upwards to be in contact connection with the fixed electrifying block 51, the short rod 13 moves upwards to drive the ratchet wheel 55 to rotate, the movable electrifying block 66 is in contact connection with the fixed electrifying block 51, the fixed electrifying block 51 starts to be electrified, the warning lamp 46 is controlled to start working through the electric wire 49, the overvoltage alarm prompt is started, the lead 50 is electrified, and the motor 16 starts to work;
3: the ratchet wheel 55 rotates to drive the rotating rod 56 to rotate, so as to drive the driving pulley 15 to rotate, the second torsion spring 70 is tightened, the driving pulley 15 rotates to drive the driven pulley 43 connected with the driving pulley through the belt 47 to rotate, so as to drive the rotating shaft 44 and the first bevel gear 42 to rotate, so as to drive the second bevel gear 38 meshed with the first bevel gear 42 to rotate, so as to drive the rotating shaft 40 and the pointer 41 to rotate by corresponding angles, so as to control the pointer 41 to point to the corresponding transmission mechanism 64, so that the pressure in the storage cavity 12 can be visually observed;
4: the motor 16 works to drive the transmission shaft 17 to rotate, the transmission shaft 17 rotates to drive the rope winding wheel 18 and the driving sprocket 19 to rotate, the rope winding wheel 18 rotates to tighten the pull rope 20, so that the piston plate 33 is pulled to move downwards through the pull rope 20, the storage cavity 12 is communicated with the auxiliary storage cavity 26, when the piston plate 33 moves downwards to the lowest end, the pull rope 20 cannot be tightened continuously, the rope winding wheel 18 slips on the transmission shaft 17, the driving sprocket 19 rotates to drive the driven sprocket 23 connected with the driving sprocket through the chain 21 to rotate, so that the fan shaft 22 and the two fan blades 36 are driven to rotate, natural gas in the storage cavity 12 is sucked into the auxiliary storage cavity 26 through the rotation of the fan blades 36, and pressure relief is accelerated;
5: after the pressure relief is finished, the piston block 58 moves downwards to reset under the elastic force of the elastic spring 57, the rotating rod 56 rotates reversely under the action of the second torsion spring 70 to drive the pointer 41 to reset through mechanical transmission, the movable energizing block 66 loses the pushing force of the short rod 13 to move downwards to reset under the action of the extension spring 53, the motor 16 is powered off and stops working, the piston plate 33 loses the pulling force of the pull rope 20 to move upwards to reset under the elastic force of the elastic spring 31, and the storage cavity 12 is separated from the auxiliary storage cavity 26 again.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims (5)

1. The utility model provides a natural gas storage tank overvoltage detection and pressure relief device, includes the holding vessel body, main characterized in that: an auxiliary storage tank body is arranged on the upper side of the storage tank body, a transmission cavity is arranged in the storage tank body, a storage cavity is arranged in the storage tank body, a transmission mechanism for providing power for the device is arranged in the transmission cavity, a sensing warning mechanism for sensing the pressure intensity in the storage cavity is arranged at the right end in the auxiliary storage tank body, and an air release mechanism for releasing the pressure intensity when the pressure intensity in the storage cavity is over-pressure is arranged at the left end in the auxiliary storage tank body;
the induction warning mechanism comprises a piston cavity which is positioned at the right end of the auxiliary storage tank body and has a downward opening, the lower end of the piston cavity is fixedly provided with an air leakage block, a piston block which can slide up and down in the cavity is arranged in the piston cavity, the upper side of the piston cavity is provided with a power-on cavity, the upper end surface of the piston block is fixedly provided with a short rod the upper end of which extends into the power-on cavity, the left end surface of the lower end of the short rod is provided with a rack, a movable power-on block which can move up and down in the cavity is arranged in the power-on cavity, the upper end of the power-on cavity is fixedly provided with a fixed power-on block, the upper end surface of the fixed power-on block is electrically connected with an electric wire and a lead wire, the other end of the electric wire is electrically connected with a warning lamp, the right cavity wall of the upper end of the piston cavity is provided with an air inlet communicated, a second torsion spring is arranged between the rotating rod and the left cavity wall of the piston cavity for connection, the right end of the rotating rod is provided with a ratchet wheel meshed and connected with the rack on the short rod, twelve rotating cavities are arranged in the ratchet wheel and are distributed at equal intervals, fixed rods are fixedly arranged on the left cavity wall and the right cavity wall in the rotating cavities, rotating teeth are arranged on the fixed rods, a first torsion spring is arranged between the rotating teeth and the fixed rods for connection, the left end of the rotating rod is provided with a driving belt wheel positioned in a first driven cavity, the left cavity wall and the right cavity wall of the second transmission cavity are rotatably connected with a rotating shaft, the right end of the rotating shaft is provided with a driven belt wheel, a belt rotatably connected with the driving belt wheel is arranged on the driven belt wheel, the left end of the rotating shaft is provided with a first bevel gear, the upper end surface of the auxiliary storage tank body is fixedly provided with a dial plate, a second bevel gear in meshed connection with the first bevel gear is arranged at the lower end of the rotating shaft, and a pointer positioned in the dial plate is arranged at the upper end of the rotating shaft;
the device passes through the size of the interior pressure of response warning mechanism response accumulator then can start the device through response warning mechanism when exceeding certain pressure, by drive mechanism provides power, through lose heart mechanism unloads unnecessary pressure in the accumulator.
2. The natural gas storage tank overpressure detecting and relieving device of claim 1, wherein: the transmission mechanism comprises a motor fixed on the lower cavity wall of the transmission cavity, the upper end of the motor is in power connection with a transmission shaft, the right end of the motor is electrically connected with one end of a wire, a rope winding wheel is arranged at the lower end of the transmission shaft, a pull rope is wound on the rope winding wheel, a driving chain wheel is arranged at the upper end of the transmission shaft, and a chain is connected to the driving chain wheel.
3. The natural gas storage tank overpressure detecting and relieving device of claim 1, wherein: the air release mechanism comprises an auxiliary storage cavity positioned at the left end in the auxiliary storage tank body, the left side of the transmission cavity is provided with a fan cavity with the lower end communicated with the storage cavity, the cavity wall at the lower end in the fan cavity is fixedly provided with a fixed plate, the fixed plate is rotatably connected with a fan shaft, the lower end of the fan shaft is provided with a driven sprocket, the driven sprocket is rotatably connected with the rope winding wheel through the chain, the upper end of the fan shaft is provided with two fan blades, the right cavity wall of the auxiliary storage cavity is provided with a through hole communicated with the fan cavity, the lower cavity wall of the through hole is provided with a piston plate cavity, the piston plate cavity is internally provided with a piston plate capable of sliding up and down in the cavity, the lower end surface of the piston plate is fixedly provided with an elastic spring connected with the lower cavity wall of the piston plate cavity, the lower end surface of the piston plate is also, an electromagnetic switch is arranged in the through hole.
4. The natural gas storage tank overpressure detecting and relieving device of claim 3, wherein: the elasticity of the elastic spring is larger than the sum of the friction force received by the piston plate when the piston plate slides in the piston plate cavity and the gravity of the piston plate.
5. The natural gas storage tank overpressure detecting and relieving device of claim 1, wherein: the pulling force of the elastic spring is larger than the friction force applied to the piston block when the piston block slides in the piston cavity.
CN201911072500.5A 2019-11-05 2019-11-05 Natural gas storage tank overvoltage detection and pressure relief device Active CN110748792B (en)

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CN201911072500.5A CN110748792B (en) 2019-11-05 2019-11-05 Natural gas storage tank overvoltage detection and pressure relief device

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CN110748792A true CN110748792A (en) 2020-02-04
CN110748792B CN110748792B (en) 2020-08-11

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