CN111853525A - Interlayer explosion-proof and vacuum-pumping integrated device and container - Google Patents

Interlayer explosion-proof and vacuum-pumping integrated device and container Download PDF

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Publication number
CN111853525A
CN111853525A CN202010646095.XA CN202010646095A CN111853525A CN 111853525 A CN111853525 A CN 111853525A CN 202010646095 A CN202010646095 A CN 202010646095A CN 111853525 A CN111853525 A CN 111853525A
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CN
China
Prior art keywords
explosion
proof
cover
valve body
vacuum
Prior art date
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Pending
Application number
CN202010646095.XA
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Chinese (zh)
Inventor
黄政贤
杨清义
何远新
吕长乐
卢海
徐卫国
费锦华
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CRRC Yangtze Co Ltd
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CRRC Yangtze Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CRRC Yangtze Co Ltd filed Critical CRRC Yangtze Co Ltd
Priority to CN202010646095.XA priority Critical patent/CN111853525A/en
Publication of CN111853525A publication Critical patent/CN111853525A/en
Pending legal-status Critical Current

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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
    • F17C3/00—Vessels not under pressure
    • F17C3/02—Vessels not under pressure with provision for thermal insulation
    • F17C3/08—Vessels not under pressure with provision for thermal insulation by vacuum spaces, e.g. Dewar flask
    • 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
    • F17C13/126—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures for large storage containers for liquefied gas
    • 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
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/03—Thermal insulations
    • F17C2203/0391—Thermal insulations by vacuum
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Pressure Vessels And Lids Thereof (AREA)

Abstract

The invention relates to an interlayer explosion-proof and vacuum-pumping integrated device and a container. The interlayer explosion-proof and vacuum-pumping integrated device comprises an explosion-proof cover, a protective cover, a valve body and a protective cover, wherein the first end and the second end of the explosion-proof cover are both provided with an opening, and the protective cover is arranged at the opening of the first end of the explosion-proof cover in an openable manner; the first ends of the valve body and the protective cover are both arranged in an open manner, the first end of the valve body and the first end of the protective cover can be selected to be fixedly sleeved outside the first end of the explosion-proof cover, the second ends of the valve body and the protective cover are arranged in a closed manner, the middle part of the second end of the valve body is provided with a through hole, and the side surface of the valve body is provided with an open port; the second end of the pull rod is positioned on the outer side of the valve body, the first end of the pull rod movably penetrates through the through hole, and the second end of the pull rod is selectively connected with the protective cover. The invention reduces the number of holes on the shell of the container, reduces the risk of vacuum leakage from the source, improves the safety and reliability of the use of the container and has good practicability.

Description

Interlayer explosion-proof and vacuum-pumping integrated device and container
Technical Field
The invention belongs to the technical field of transportation safety, and particularly relates to an interlayer explosion-proof and vacuumizing integrated device and a container.
Background
The vacuum heat-insulating container for storing frozen liquefied gas for a long time usually adopts a double-layer tank structure, and after an interlayer space formed between an outer shell and an inner container is vacuumized, the heat conduction between the inner container and the outer shell can be obviously reduced, so that the evaporation of the frozen liquid due to rapid temperature rise is greatly reduced.
In the prior art, an explosion-proof device is usually arranged on a shell sealing head, a hole with the same size as the outer diameter of an explosion-proof cover of the explosion-proof device is formed in the shell sealing head, the explosion-proof cover and the shell sealing head are assembled and welded together, and after an interlayer is vacuumized and vacuum formed, the explosion-proof cover can be firmly adsorbed on the explosion-proof cover through a sealing ring due to negative pressure generated by interlayer vacuum so as to maintain the vacuum degree of the interlayer.
When the vacuumizing device is installed, a hole with the same size as the outer diameter of an exhaust pipe of the vacuumizing device needs to be formed in a shell barrel or an end socket, the exhaust pipe and a shell are welded together, and the exhaust pipe is connected with vacuumizing equipment through the hole to vacuumize the interlayer space of the tank body.
In carrying out the present invention, the applicant has found that at least the following disadvantages exist in the prior art:
because the cryogenic container is respectively provided with the independent explosion-proof device and the independent vacuumizing device, two holes need to be formed in the outer shell, on one hand, the risk of interlayer space leakage is increased, on the other hand, the independent vacuumizing device is arranged, the manufacturing cost is increased, and the structural complexity is increased because the vacuumizing protection device is also required to be arranged for the cryogenic container. In addition, the vacuum degree of the interlayer is simultaneously influenced by the sealing performance of the explosion-proof device and the vacuum pumping device, so that the use safety and reliability of the container are reduced.
Novel content
Aiming at the problems in the prior art, the invention provides an interlayer explosion-proof and vacuum-pumping integrated device and a container, which aim to solve the technical problem that the safety and reliability of the container are affected due to the installation of the explosion-proof device and the vacuum-pumping device on the container in the prior art.
The invention realizes the purpose through the following technical scheme:
in one aspect, the present invention provides an integrated explosion-proof and vacuum-pumping device for an interlayer, comprising:
the explosion-proof cover is provided with a first end and a second end which are opposite, and the first end and the second end of the explosion-proof cover are both opened;
the protective cover is arranged at the opening of the first end of the explosion-proof cover in an openable and closable manner;
the valve body and the protective cover are provided with a first end and a second end which are opposite, the first ends of the valve body and the protective cover are arranged in an open mode, the first end of the valve body and the first end of the protective cover can be selected to be fixedly sleeved on the outer side of the first end of the explosion-proof cover, the second ends of the valve body and the protective cover are arranged in a sealed mode, a through hole is formed in the middle of the second end of the valve body, and an open port is formed in the side face of the valve body;
The pull rod, the pull rod has relative first end and second end, the second end of pull rod is located the outside of valve body, the first end activity of pull rod passes the through-hole, the second end of pull rod optionally with the protective cover is connected.
Further, be provided with a plurality of mounting holes on the cover body outside of explosion-proof cover, it is a plurality of the mounting hole is cyclic annular setting, the protection casing through a plurality of with the fixed suit of fastener detachably that the mounting hole mutually supported is in the outside of the first end of explosion-proof cover.
Furthermore, a stepped hole is formed in an opening of the first end of the explosion-proof cover;
the protective cover has with the shoulder hole complex ladder, the shoulder detachably cooperation of protective cover sets up in the shoulder hole of the first end of explosion-proof cover.
Furthermore, each step of the steps of the protective cover is correspondingly sleeved with a first sealing ring.
Further, the first end of valve body is connected with compresses tightly the lid, the outside of the first end of explosion-proof cover is provided with the tang, compress tightly the fixed suit of lid detachably and be in the tang department of explosion-proof cover.
Further, the middle part that compresses tightly the lid be provided with the tang matched with mounting hole of explosion-proof cover, the border that compresses tightly the lid is provided with the arch, the arch is cyclic annular setting, protruding to the direction of the second end of valve body extends, the first end of valve body is connected with the sealing ring, the sealing ring is fixed to be inlayed and is established in the arch, the sealing ring can with the cover body sealing connection of protection casing, the inboard of sealing ring is provided with the second sealing washer.
Furthermore, a guide sleeve is arranged on the outer side of the second end of the valve body, and the first end of the pull rod sequentially and movably penetrates through the guide sleeve and the middle of the second end of the valve body.
Furthermore, the two ends of the guide sleeve are both provided with screw plugs in a threaded manner, and the first end of the pull rod movably penetrates through the two screw plugs.
Further, the sandwich explosion-proof and vacuum-pumping integrated device is characterized in that a third sealing ring is arranged at the end part of each screw plug and the end part of each guide sleeve.
In another aspect, the invention provides a container, and the interlayer explosion-proof and vacuum-pumping integrated device is mounted on the container.
The invention has the beneficial effects that:
when the interlayer explosion-proof and vacuum-pumping integrated device is installed on the container, an opening is formed in a shell of the container, a second end of an explosion-proof cover is fixedly sealed in the opening, a first end of a valve body is fixedly sleeved on the outer side of a first end of the explosion-proof cover, a pull rod is connected with the explosion-proof cover, the pull rod is operated to enable the explosion-proof cover to be separated from an opening of the first end of the explosion-proof cover, the opening of the first end of the explosion-proof cover is opened, and the container is vacuumized by utilizing an opening port formed in the side face of the valve body.
After the vacuumizing operation is completed, the pull rod is operated to enable the pull rod to push the explosion-proof cover to the opening of the first end of the explosion-proof cover, the explosion-proof cover can be firmly adsorbed at the opening of the first end of the explosion-proof cover under the action of negative pressure so as to seal the opening of the first end of the explosion-proof cover, then the valve body is disassembled and assembled from the explosion-proof cover, and finally the protective cover is installed on the explosion-proof cover.
According to the invention, the explosion-proof and vacuum-pumping work of the container can be completed only by arranging the hole on the shell of the container, so that the number of holes on the shell of the container is reduced, the risk of vacuum leakage is reduced from the source, the safety and reliability of the use of the container are improved, and the container has good practicability.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an explosion-proof unit of an integrated explosion-proof interlayer and vacuum pumping device according to an embodiment of the invention;
FIG. 2 is a schematic cross-sectional view of FIG. 1;
FIG. 3 is a schematic structural diagram of a vacuum-pumping unit of the sandwich explosion-proof and vacuum-pumping integrated device according to the embodiment of the invention;
FIG. 4 is a schematic cross-sectional view of FIG. 3;
FIG. 5 is a schematic view of a structure for evacuating the interlayer of the container;
fig. 6 is a schematic cross-sectional view of fig. 5.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides a container, wherein an interlayer explosion-proof and vacuum-pumping integrated device is arranged on a shell of the container, and the integrated device integrates an interlayer explosion-proof function and an interlayer vacuum-pumping function into a whole so as to solve the technical problem that the safety and the reliability of the container are influenced due to the installation of the explosion-proof device and the vacuum-pumping device on the container in the background technology.
The sandwich explosion-proof and vacuum-pumping integrated device comprises an explosion-proof unit and a vacuum-pumping unit, wherein FIG. 1 is a schematic structural diagram of the explosion-proof unit of the sandwich explosion-proof and vacuum-pumping integrated device, FIG. 2 is a schematic sectional diagram of FIG. 1, and in combination with FIG. 1 and FIG. 2, the explosion-proof unit comprises an explosion-proof cover 1-3, a protective cover 1-2 and a protective cover 1-4, the explosion-proof cover 1-3 has a first end and a second end which are opposite, the first end and the second end of the explosion-proof cover 1-3 are both arranged in an open manner, the second end of the explosion-proof cover 1-3 can be mounted on a shell of a container, the protective cover 1-4 can be arranged in the open manner at the first end of the explosion-proof cover 1-3 in an open manner, the protective cover 1-2 has a first end and a second end which are opposite, the first end of the protective cover 1-2 can be, the second end of the protecting cover 1-2 is sealed, and when the explosion-proof unit is installed on the container for use, the protecting cover 1-2 can prevent accidents caused by the fact that the protecting cover 1-4 is separated from the opening of the first end of the explosion-proof cover 1-3.
With reference to fig. 1 and 2, in the embodiment of the present invention, a plurality of mounting holes are formed in the outer side of the explosion-proof cover 1-3, the plurality of mounting holes are annularly arranged, and the protection cover 1-2 is detachably fixed and sleeved on the outer side of the first end of the explosion-proof cover 1-3 by a plurality of fasteners 1-1 which are mutually matched with the mounting holes, so that the explosion-proof cover 1-3 and the explosion-proof cover 1-3 can be quickly assembled.
In the embodiment of the present invention, the opening of the first end of the explosion-proof cover 1-3 may be provided with a step hole, and the protecting cover 1-4 has a step matched with the step hole, the step of the protecting cover 1-4 is detachably matched with the step hole of the first end of the explosion-proof cover 1-3, so that the sealing performance of the protecting cover 1-4 arranged at the opening of the first end of the explosion-proof cover 1-3 can be ensured by the connection mode of matching the step hole.
Further, referring to fig. 1 and fig. 2, in the embodiment of the present invention, each of the steps of the protecting cover 1-4 is correspondingly sleeved with a first sealing ring, and the first sealing ring can move synchronously with the protecting cover 1-4.
In the embodiment of the present invention, the protecting cover 1-4 has two steps, each step has a mounting groove on its outer side, and the first sealing ring is disposed in the mounting groove of the corresponding step, and the first sealing ring is 1-5 and 1-6 in fig. 1.
Fig. 3 is a schematic structural diagram of an evacuation unit of an integrated interlayer explosion-proof and evacuation device according to an embodiment of the present invention, fig. 4 is a schematic sectional diagram of fig. 3, fig. 5 is a schematic structural diagram of evacuation of an interlayer of a container, fig. 6 is a schematic sectional diagram of fig. 5, in combination with fig. 3-6, the evacuation unit according to an embodiment of the present invention includes a valve body 2-7 and a pull rod 2-1, wherein the valve body 2-7 has a first end and a second end opposite to each other, the first end of the valve body 2-7 is disposed in an open manner, the first end of the valve body 2-7 is selectively fixedly sleeved outside the first end of the explosion-proof cover 1-3, the second end of the valve body 2-7 is disposed in a sealed manner, a through hole is disposed in the middle of the second end of the valve body 2-7, an open port 2-11, the pull rod 2-1 is also provided with a first end and a second end which are opposite, the second end of the pull rod 2-1 is positioned outside the valve body 2-7, the first end of the pull rod 2-1 movably penetrates through the through hole, and the second end of the pull rod 2-1 is selectively connected with the protective cover 1-4.
With reference to fig. 3-6, in the embodiment of the present invention, a first end of a valve body 2-7 is connected to a pressing cover 2-5, an outer side of the first end of an explosion-proof cover 1-3 is provided with a seam allowance, and the pressing cover 2-5 is detachably and fixedly sleeved at the seam allowance of the explosion-proof cover 1-3 to achieve rapid connection between the valve body 2-7 and the explosion-proof cover 1-3, specifically, the two can be connected in a threaded connection manner, and the seam allowance can also limit the valve body 2-7.
Further, with reference to fig. 3-6, in the embodiment of the present invention, a mounting hole matching with the seam allowance of the explosion-proof cover 1-3 is formed in the middle of the pressing cover 2-5, a protrusion is formed on the edge of the pressing cover 2-5, the protrusion is annularly disposed, the protrusion extends toward the second end of the valve body 2-7, the first end of the valve body 2-7 is connected with a sealing ring 2-6, the sealing ring 2-6 is fixedly embedded in the protrusion, the sealing ring 2-6 can be hermetically connected with the cover body of the protection cover 1-2, and a second sealing ring 2-4 is disposed on the inner side of the sealing ring 2-6, so as to improve the sealing performance when the valve body 2-7 is connected with the explosion-proof cover 1-3.
Further, with reference to fig. 3-6, in the embodiment of the present invention, a guide sleeve 2-2 is disposed outside the second end of the valve body 2-7, the first end of the pull rod 2-1 sequentially and movably penetrates through the guide sleeve 2-2 and the middle of the second end of the valve body 2-7, and the guide sleeve 2-2 is disposed to improve guidance for movement of the pull rod 2-1.
In addition, in the embodiment of the invention, with reference to fig. 3-6, the two ends of the guide sleeve 2-2 are both provided with the screw plugs 2-9 through threads, the first end of the pull rod 2-1 is movably penetrated through the two screw plugs 2-9, and after the pull rod 2-1 is moved to the right position, the pull rod 2-1 can be fixed through the screw plugs 2-9.
Further, with reference to fig. 3-6, in the embodiment of the present invention, the end of each of the screw plug 2-9 and the guide sleeve 2-2 is provided with a third sealing ring, which is 2-3 and 2-8, respectively, to improve the sealing performance.
Also, referring to fig. 3-6, in the embodiment of the present invention, the second end of the pull rod 2-1 is provided with a handle 2-10 to facilitate the operation of the pull rod, and the first end of the pull rod 2-1 may be threadedly coupled to the protecting cover 1-4.
In practice, the explosion-proof unit, which is the component necessary for each container product, is manufactured and assembled as shown in fig. 1; the evacuation unit is then fabricated and assembled as shown in fig. 2, and the evacuation unit can be removed and reused without being a component part of the container.
When the container is constructed, an opening is arranged on the shell of the container, the second end of the explosion-proof cover 1-3 of the explosion-proof unit is arranged in the opening of the container and is welded and fixed, and the protective cover is not arranged temporarily.
Before the vacuum pumping operation, the first end of the valve body 2-7 is buckled on the explosion-proof seat 1-3, the explosion-proof cover 1-4 is connected with the pull rod 2-1 through threads, the pull rod 2-1 is operated, the pull rod 2-1 is pulled out to the position shown in figure 3, the explosion-proof cover 1-4 is separated from the opening of the first end of the explosion-proof cover 1-3, the opening of the first end of the explosion-proof cover 1-3 is opened, the opening port 2-11 of the valve body 2-7 is connected with a hose of a vacuum pumping unit, and the vacuum pumping unit is opened, so that the vacuum pumping operation can be started.
After the vacuumizing operation is finished, namely when the vacuum degree of the interlayer reaches a preset index, operating the pull rod 2-1, pushing the pull rod 2-1 inwards until the explosion-proof cover 1-4 is in close contact with the explosion-proof cover 1-3, stopping the vacuumizing unit and disconnecting the connecting hose, firmly adsorbing the explosion-proof cover 1-4 at the opening of the first end of the explosion-proof cover 1-3 under the action of negative pressure so as to seal the opening of the first end of the explosion-proof cover 1-3, disconnecting the pull rod 2-1 from the explosion-proof cover 1-4, and finally installing the protective cover 1-2 on the explosion-proof cover 1-3.
Therefore, the explosion-proof and vacuum-pumping work of the container can be finished only by arranging the hole on the shell of the container, the number of holes on the shell of the container is reduced, the vacuum leakage risk is reduced from the source, the safety and reliability of the use of the container are improved, and the container has good practicability.
In addition, in the prior art, in order to ensure the sealing reliability and reduce the vacuum sealing operation difficulty, a vacuum-pumping valve is usually adopted to replace a vacuum-pumping port and is connected with a vacuum interlayer through a standard vacuum flange. In order to ensure the reliability of sealing, the drift diameter of the used vacuumizing stop valve is small (generally 50mm), so that the vacuumizing speed is greatly reduced, and the vacuumizing efficiency of the container is seriously influenced.
In addition, in the prior art, the air flow channel of the vacuum-pumping valve has a curved structure, and due to the small caliber of the vacuum-pumping port and the curved structure in the air flow channel, the free path (i.e. the straight line path which the gas molecules pass between two collisions) of the thin gas in the high vacuum state is very large (the free path 10 of the gas molecules under the atmospheric pressure is 10)-7mm class, qiThe probability of collision between the gas flow and the pipe wall is small, the gas flow is not easy to return after collision, and the free path of gas molecules under high vacuum can reach 10 3The collision probability with the pipe wall of the channel is greatly increased in mm level, and the gas resistance is very small, so that gas molecules are easy to flow back after collision), and the gas is easy to collide with the pipe wall at the bend in the flowing process of the gas to flow back, so that the gas cannot be smoothly pumped out of the vacuum interlayer, and the vacuum pumping working efficiency is seriously influenced; the blind increase of the diameter of the vacuumizing channel brings difficulty to vacuum sealing, even the vacuum sealing cannot be realized, so that the determination of the channel diameter of the vacuum sealing device is always a difficult problem of the structural design.
Therefore, the two first sealing rings are arranged in the protective cover 1-4, the sealing reliability can be effectively improved, the inner diameter size of the explosion-proof cover 1-3 can be further improved, the inner diameter of the explosion-proof cover 1-3 can be increased to 100mm, an axial vacuumizing mode is adopted, a curve structure does not exist, the vacuumizing speed is greatly improved, and the practical value is good.
The above-mentioned embodiments are only for convenience of description of the invention, and are not intended to limit the invention in any way, and those skilled in the art will recognize that the invention can be practiced without departing from the spirit and scope of the invention.

Claims (10)

1. An explosion-proof and evacuation sandwich integrated device, comprising:
the explosion-proof cover (1-3), the explosion-proof cover (1-3) has relative first end and second end, the first end and the second end of the explosion-proof cover (1-3) are both open;
the protective cover (1-4), the protective cover (1-4) can be arranged at the opening of the first end of the explosion-proof cover (1-3) in an opening and closing manner;
the explosion-proof cover comprises a valve body (2-7) and a protective cover (1-2), wherein the valve body (2-7) and the protective cover (1-2) are respectively provided with a first end and a second end which are opposite, the first ends of the valve body (2-7) and the protective cover (1-2) are arranged in an open mode, the first ends of the valve body (2-7) and the protective cover (1-2) can be selected to be fixedly sleeved on the outer side of the first end of the explosion-proof cover (1-3), the second ends of the valve body (2-7) and the protective cover (1-2) are arranged in a sealing mode, a through hole is formed in the middle of the second end of the valve body (2-7), and an open port (2-11) is formed in the side face of the valve body (2-7);
the valve body (2-7) is provided with a through hole, the pull rod (2-1) is provided with a first end and a second end which are opposite, the second end of the pull rod (2-1) is positioned at the outer side of the valve body (2-7), the first end of the pull rod (2-1) movably penetrates through the through hole, and the second end of the pull rod (2-1) can be selectively connected with the protective cover.
2. The sandwich explosion-proof and vacuum-pumping integrated device according to claim 1, characterized in that a plurality of mounting holes are arranged on the outer side of the cover body of the explosion-proof cover (1-3), the plurality of mounting holes are arranged in a ring shape, and the protective cover (1-2) is detachably fixed and sleeved on the outer side of the first end of the explosion-proof cover (1-3) through a plurality of fasteners (1-1) matched with the mounting holes.
3. The sandwich explosion-proof and vacuum-pumping integrated device according to claim 1, characterized in that the opening of the first end of the explosion-proof cover (1-3) is provided with a stepped hole;
the protective cover (1-4) is provided with a step matched with the stepped hole, and the step of the protective cover (1-4) is detachably matched and arranged in the stepped hole at the first end of the explosion-proof cover (1-3).
4. The sandwich explosion-proof and vacuum-pumping integrated device as claimed in claim 3, wherein each of the steps of the protecting covers (1-4) is correspondingly sleeved with a first sealing ring.
5. The sandwich explosion-proof and vacuum-pumping integrated device according to claim 1, characterized in that a compressing cover (2-5) is connected to the first end of the valve body (2-7), a spigot is arranged on the outer side of the first end of the explosion-proof cover (1-3), and the compressing cover (2-5) is detachably fixed and sleeved on the spigot of the explosion-proof cover (1-3).
6. The sandwich explosion-proof and vacuum-pumping integrated device according to claim 5, characterized in that the middle of the compressing cover (2-5) is provided with a mounting hole matched with the spigot of the explosion-proof cover (1-3), the edge of the compressing cover (2-5) is provided with a protrusion, the protrusion is arranged in a ring shape, the protrusion extends towards the direction of the second end of the valve body (2-7), the first end of the valve body (2-7) is connected with a sealing ring (2-6), the sealing ring (2-6) is fixedly embedded in the protrusion, the sealing ring (2-6) can be connected with the cover body of the protecting cover (1-2) in a sealing manner, and the inner side of the sealing ring (2-6) is provided with a second sealing ring (2-4).
7. The sandwich explosion-proof and vacuum-pumping integrated device according to claim 1, characterized in that a guide sleeve (2-2) is arranged outside the second end of the valve body (2-7), and the first end of the pull rod (2-1) sequentially passes through the guide sleeve (2-2) and the middle of the second end of the valve body (2-7).
8. The sandwich explosion-proof and vacuum-pumping integrated device according to claim 7, characterized in that both ends of the guide sleeve (2-2) are provided with screw plugs (2-9) in a threaded manner, and the first end of the pull rod (2-1) movably penetrates through both screw plugs (2-9).
9. The sandwich explosion-proof and vacuum-pumping integrated device according to claim 8, characterized in that the end of each screw plug (2-9) and the guide sleeve (2-2) is provided with a third sealing ring.
10. A container having mounted thereon an integrated explosion-proof and vacuum evacuation sandwich device according to any one of claims 1 to 9.
CN202010646095.XA 2020-07-07 2020-07-07 Interlayer explosion-proof and vacuum-pumping integrated device and container Pending CN111853525A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010646095.XA CN111853525A (en) 2020-07-07 2020-07-07 Interlayer explosion-proof and vacuum-pumping integrated device and container

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Application Number Priority Date Filing Date Title
CN202010646095.XA CN111853525A (en) 2020-07-07 2020-07-07 Interlayer explosion-proof and vacuum-pumping integrated device and container

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Publication Number Publication Date
CN111853525A true CN111853525A (en) 2020-10-30

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Application Number Title Priority Date Filing Date
CN202010646095.XA Pending CN111853525A (en) 2020-07-07 2020-07-07 Interlayer explosion-proof and vacuum-pumping integrated device and container

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CN (1) CN111853525A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117704264A (en) * 2024-01-17 2024-03-15 郯城县宏祥液化气站 Sealed storage tank for liquefied gas

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117704264A (en) * 2024-01-17 2024-03-15 郯城县宏祥液化气站 Sealed storage tank for liquefied gas
CN117704264B (en) * 2024-01-17 2024-05-10 郯城县宏祥液化气站 Sealed storage tank for liquefied gas

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