CN115013716B

CN115013716B - Low-temperature carbon dioxide transportation tank

Info

Publication number: CN115013716B
Application number: CN202210941002.5A
Authority: CN
Inventors: 马兆华; 王树新
Original assignee: Yantai Penglai Tianyang Chemical Co ltd
Current assignee: Yantai Penglai Tianyang Chemical Co ltd
Priority date: 2022-08-08
Filing date: 2022-08-08
Publication date: 2022-10-25
Anticipated expiration: 2042-08-08
Also published as: CN115013716A

Abstract

The invention discloses a low-temperature carbon dioxide transportation tank, which relates to the technical field of carbon dioxide storage and comprises an outer tank body, wherein an inner tank body is fixedly connected in the outer tank body, the inner wall of the inner tank body is connected with a piston plate in a sliding manner, and a first gas cavity is arranged above the piston plate. When the air pressure in the carbon dioxide is too high, the two piston blocks, the connecting rod and the fixed rack are simultaneously extruded to move, the fixed rack moves to drive the rotating gear and the rotating shaft to rotate, the rotating shaft rotates to drive the valve to rotate and open for pressure relief until the air pressure of the carbon dioxide is lower than the air pressure in the air storage tank, at the moment, the air pressure in the air storage tank can extrude the two piston blocks to reset to drive the valve to reset and close, the inert gas can be automatically discharged for pressure relief when the air pressure in the transport tank is too high, the carbon dioxide cannot leak to cause resource waste, the automatic pressure relief is realized through a mechanical structure, the failure is not easy to occur, the service life is long, and the cost is low.

Description

Low-temperature carbon dioxide transportation tank

Technical Field

The invention relates to the technical field of carbon dioxide storage, in particular to a low-temperature carbon dioxide transportation tank.

Background

In the extruded sheet industry, liquid carbon dioxide is used as a foaming agent, the used carbon dioxide is only in a liquid state, and bubbles are generated in materials due to the fact that the gasified carbon dioxide is added into an extruding machine, so that the defect that a cavity is formed in the product is caused; and liquid carbon dioxide is easy to solidify under low pressure to become dry ice, and the dry ice can block the pipeline, so that the condition that the pipeline has to be stopped for maintenance due to cleaning is caused, and the carbon dioxide needs to be in a balanced state.

The patent document with publication number CN 209363U discloses a liquid carbon dioxide storage tank, which is provided with a vacuum interlayer, the liquid carbon dioxide is stored in an inner tank, and the vacuum interlayer can play a role in heat insulation, so as to prevent external heat from affecting the liquid carbon dioxide and maintain the storage environment of the carbon dioxide; the limiting mechanism can play a role in auxiliary support of the inner tank, so that the stability of the inner tank in the outer tank is improved, and the safety of gas storage is improved; the buffer cushion can avoid scraping and abrasion between the limiting plate and the surface of the inner tank, and the buffer cushion can adopt a composite structure of a rubber base layer and a heat insulation soft felt, so that the effects of blocking heat flow transmission and avoiding external heat from being conducted to the inner tank through the limiting plate can be achieved; the mounting groove is convenient for positioning when the inner tank is mounted, and the damping spring can absorb external vibration impact, so that the inner tank is stably fixed in the outer tank, and the buffering and damping effects are enhanced; the heat insulating layer can prevent the exchange of inner heat and outer heat, and the protective pad can absorb impact force through the deformation of the protective pad when the external impact acts on the outer tank, so that the outer tank is protected.

However, the invention has the following disadvantages: above-mentioned device only absorbs external vibration through damping spring, nevertheless jolts owing to the uneven production in road surface in the transportation for carbon dioxide transportation jar produces violent vibrations, causes gas pressure too big, probably takes place carbon dioxide and reveals the phenomenon, thereby leads to the carbon dioxide of storage to discharge the jar external, and then has caused the carbon dioxide wasting of resources.

Disclosure of Invention

The object of the present invention is to provide a cryogenic carbon dioxide transport tank that solves the problems set forth in the background above.

The technical scheme of the invention is as follows: low temperature carbon dioxide transport tank, including the ectosome, the internal fixedly connected with inner tank of ectosome, the inner wall sliding connection of inner tank has the piston board, establish to first gaseous chamber in the top space of piston board, establish to second gaseous chamber in the below space of piston board, two fixed columns of the top inner wall fixedly connected with of inner tank, two the spout has all been seted up to the bottom of fixed column, two equal sliding connection has the movable column in the spout, two the equal fixed connection in bottom of movable column in the top of piston board, two telescopic spring has all been cup jointed on the fixed column, telescopic spring's both ends respectively with the fixed column with piston board fixed connection, the inner tank with the inner wall of ectosome has all seted up the fixed orifices, two fixedly connected with connecting pipe in the fixed orifices, the fixed intercommunication of one end of connecting pipe has the gas storage tank, the other end and the second gaseous chamber of connecting pipe are linked together, install the automatic pressure release mechanism that is used for gas pressure release on the connecting pipe.

Preferably, the automatic pressure relief mechanism comprises two piston blocks which are slidably connected in the connecting pipe, two connecting rods are fixedly connected to one side, close to each other, of the piston blocks, one fixing rack is fixedly connected to one side of each connecting rod, a rotating hole is formed in the inner wall of the connecting pipe, a rotating shaft is rotatably connected in the rotating hole, a rotating gear is fixedly connected to the bottom end of the rotating shaft, and the rotating gear is meshed with the fixing rack.

Preferably, another sliding sleeve has cup jointed the fixed sleeving on the connecting rod, one side fixed connection of fixed sleeving in the inner wall of connecting pipe, the inner wall fixedly connected with gag lever post of connecting pipe, the gag lever post with the fixed sleeving with tooth looks adaptation on the running gear.

Preferably, the installation piece has been cup jointed in the rotation of axis of rotation, one side fixed connection of installation piece in the cylinder lateral wall of the outer jar of body, the outer jar of body with the venthole has been seted up to the inner wall of the inner jar of body, fixedly connected with blast pipe in the venthole, fixedly connected with valve on the blast pipe, the top of axis of rotation with the rotation end fixed connection of valve, install fixed unit in the axis of rotation, install alarm unit on the blast pipe.

Preferably, the fixed unit include fixed connection in epaxial fixed cylinder rotates, the movable groove has been seted up on fixed cylinder's top, sliding connection has the slide bar in the movable groove, the bottom lateral wall fixedly connected with fixed block of installation piece, the fixed slot has been seted up to the fixed block bottom, the top of slide bar extends to in the fixed slot, the regulation hole has been seted up to the bottom inner wall in movable groove, the regulation downthehole rotation of regulation is connected with the threaded rod, the slide bar spiro union in on the threaded rod.

Preferably, the alarm unit includes a rotation hole formed in an inner wall of the exhaust pipe, a drive shaft is rotatably connected in the rotation hole, one end of the drive shaft is fixedly connected with an impeller, the impeller is located in the exhaust pipe, the other end of the drive shaft is fixedly connected with a turntable, and one side of the turntable is fixedly connected with a cylindrical block.

Preferably, a mounting sleeve is fixedly connected to the exhaust pipe, a movable hole is formed in one end of the mounting sleeve, an L-shaped sliding rod is connected to the movable hole in a sliding mode, the L-shaped sliding rod is matched with the cylindrical block, an impact block is fixedly connected to one end of the L-shaped sliding rod, a reset spring is sleeved on the L-shaped sliding rod, and two ends of the reset spring are fixedly connected with the impact block and the mounting sleeve respectively.

Preferably, the shock block is attached to one side of the shock block, and one end of the shock bell is fixedly connected to one side of the exhaust pipe.

Preferably, the one end fixedly connected with inert gas case of blast pipe, the inert gas case is kept away from the one end fixedly connected with air pump of blast pipe, the downthehole fixedly connected with intake pipe of air guide of air pump, the outer tank body with the inlet port has all been seted up to the inner wall of the inner tank body, the one end of intake pipe runs through two in proper order the inlet port extends to first gas intracavity.

Preferably, an interlayer between the outer tank body and the inner tank body is a vacuum layer, and the outer cylindrical side wall of the inner tank body is fixedly sleeved with the refrigeration assembly.

The invention provides a low-temperature carbon dioxide transportation tank by improvement, compared with the prior art, the low-temperature carbon dioxide transportation tank has the following improvements and advantages:

one is as follows: when the air pressure in the carbon dioxide is too high, the piston plate can be extruded to move, the piston plate can be enabled to move to extrude the inert gas in the first gas cavity, the air pressure of the inert gas is increased, the two piston blocks, the connecting rod and the fixed rack can be extruded to move, the fixed rack moves to drive the rotating gear and the rotating shaft to rotate, the rotating shaft rotates to drive the valve to rotate and open, the inert gas in the first gas cavity can be discharged into the exhaust pipe until the air pressure of the carbon dioxide is lower than the air pressure in the gas storage box, at the moment, the air pressure in the gas storage box can extrude the two piston blocks to reset to drive the valve to reset and close, and therefore when the air pressure in the transport tank is too high, the inert gas can be automatically discharged to release pressure, the carbon dioxide cannot leak to cause resource waste, automatic pressure release is realized through a mechanical structure, the failure is not easy to occur, the service life is long, and the cost is low.

And the second step is as follows: when the valve is opened to release pressure, gas can impact the impeller to rotate, the impeller rotates to drive the driving shaft and the rotary table to rotate, the rotary table rotates to drive the cylindrical block to rotate circumferentially, the cylindrical block can extrude the L-shaped sliding rod and the impact block to move when rotating, the L-shaped sliding rod moves to drive the reset spring to move and elastically deform, when the cylindrical block is far away from the L-shaped sliding rod, the reset spring can drive the L-shaped sliding rod and the impact block to reset, the impact block can impact the vibration bell to vibrate to generate an alarm, automatic pressure release can be realized, meanwhile, an alarm can be given, further, workers can be timely reminded of the pressure release phenomenon, and the workers are reminded of slowing down the vehicle speed and stably running.

And thirdly: according to the invention, in the pressurizing process, the threaded rod is firstly rotated to drive the sliding rod to move downwards, so that the sliding rod is moved out of the fixing groove, the fixing of the rotating shaft can be further released, after the transportation is completed, the threaded rod is reversely rotated to drive the sliding rod to reenter the fixing groove, the rotating shaft is fixed and protected, and the phenomenon that the rotating shaft is rotated by external force is effectively prevented.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic view of the inner structure of the outer tank of the present invention;

FIG. 3 is a schematic view of the inner structure of the connecting tube according to the present invention;

FIG. 4 is an enlarged view of the structure at A in FIG. 3 according to the present invention;

FIG. 5 is a schematic perspective view of the impeller, drive shaft, turntable and cylindrical block of the present invention;

FIG. 6 is a schematic perspective view of an alarm unit according to the present invention;

FIG. 7 is a schematic cross-sectional view of a fixing unit according to the present invention;

fig. 8 is a schematic perspective view of the inner tank of the present invention.

Reference numerals are as follows:

1. an outer tank body; 101. an inner tank body; 102. a refrigeration assembly; 103. a piston plate; 104. fixing a column; 105. a movable post; 106. a tension spring; 107. a vacuum layer; 2. a connecting pipe; 201. a gas storage tank; 202. a piston block; 203. a connecting rod; 204. fixing a rack; 205. a rotating gear; 206. a rotating shaft; 207. fixing the sleeve; 208. a limiting rod; 209. mounting blocks; 3. fixing the cylinder; 301. a threaded rod; 302. a slide bar; 303. a fixed block; 304. fixing grooves; 4. an exhaust pipe; 401. a valve; 402. an inert gas box; 403. an air pump; 404. an air inlet pipe; 405. a drive shaft; 406. an impeller; 407. a turntable; 408. a cylindrical block; 5. installing a sleeve; 501. an L-shaped sliding bar; 502. an impact block; 503. vibrating a bell; 504. a return spring.

Detailed Description

The present invention is described in detail below, and technical solutions in the embodiments of the present invention are clearly and completely described, 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 invention provides a low-temperature carbon dioxide transportation tank by improvement, and the technical scheme of the invention is as follows:

as shown in fig. 1 to 8, an embodiment of the invention provides a low-temperature carbon dioxide transportation tank, which includes an outer tank body 1, an inner tank body 101 is fixedly connected in the outer tank body 1, a piston plate 103 is slidably connected to an inner wall of the inner tank body 101, a first gas cavity is arranged in a space above the piston plate 103, a second gas cavity is arranged in a space below the piston plate 103, two fixed columns 104 are fixedly connected to an inner wall of a top portion of the inner tank body 101, chutes are respectively formed at bottom ends of the two fixed columns 104, movable columns 105 are respectively slidably connected in the two chutes, bottom ends of the two movable columns 105 are respectively fixedly connected to a top portion of the piston plate 103, extension springs 106 are respectively sleeved on the two fixed columns 104, two ends of the extension springs 106 are respectively fixedly connected with the fixed columns 104 and the piston plate 103, fixing holes are respectively formed in inner walls of the inner tank body 101 and the outer tank body 1, a connecting pipe 2 is fixedly connected in the two fixing holes, one end of the connecting pipe 2 is fixedly connected with a gas storage tank 201, the other end of the connecting pipe 2 is communicated with the second gas cavity, and an automatic pressure relief mechanism for relieving gas is installed on the connecting pipe 2; by means of the structure, the inert gas is filled into the first gas cavity through the arrangement of the first gas cavity, when the air pressure in the carbon dioxide gas in the second gas cavity is too high, the piston plate 103 can be extruded to move, the piston plate 103 moves to enable the space of the first gas cavity to be reduced, the space of the second gas cavity is enlarged, and the air pressure is reduced.

Further, the automatic pressure relief mechanism comprises two piston blocks 202 slidably connected in the connecting pipe 2, two connecting rods 203 are fixedly connected to the sides of the two piston blocks 202 close to each other, a fixed rack 204 is fixedly connected to one side of one of the connecting rods 203, a rotating hole is formed in the inner wall of the connecting pipe 2, a rotating shaft 206 is rotatably connected in the rotating hole, a rotating gear 205 is fixedly connected to the bottom end of the rotating shaft 206, and the rotating gear 205 is meshed with the fixed rack 204; borrow by above-mentioned structure, through the setting of piston block 202, because piston block 202 has good sealed effect for gas can not take place the leakage phenomenon, when atmospheric pressure was greater than the atmospheric pressure of gas receiver 201 in the second gas chamber, can extrude piston block 202 and remove to the gas receiver 201 direction, realized making piston block 202 produce through pressure differential and remove.

Furthermore, a fixed sleeve 207 is slidably sleeved on the other connecting rod 203, one side of the fixed sleeve 207 is fixedly connected to the inner wall of the connecting pipe 2, the inner wall of the connecting pipe 2 is fixedly connected with a limiting rod 208, and the limiting rod 208 and the fixed sleeve 207 are matched with teeth on the rotating gear 205; by means of the structure, the piston block 202 can be guided by the fixing sleeve 207, and the piston block 202 and the connecting rod 203 drive the rotating gear 205 to rotate to the position where the piston block contacts the limiting rod 208 and cannot move continuously by the arrangement of the limiting rod 208, so that the rotating gear 205 can be limited.

Further, the rotating shaft 206 is rotatably sleeved with the mounting block 209, one side of the mounting block 209 is fixedly connected to the cylindrical outer side wall of the outer tank body 1, air outlet holes are formed in the inner walls of the outer tank body 1 and the inner tank body 101, an exhaust pipe 4 is fixedly connected in the air outlet holes, a valve 401 is fixedly connected to the exhaust pipe 4, the top end of the rotating shaft 206 is fixedly connected with the rotating end of the valve 401, a fixing unit is mounted on the rotating shaft 206, and an alarm unit is mounted on the exhaust pipe 4; borrow by above-mentioned structure, through the setting of valve 401, the gear 205 that rotates drives axis of rotation 206 and rotates, and axis of rotation 206 rotates and drives valve 401 and rotate and open, has realized that second gas chamber atmospheric pressure is too big, can open valve 401 automatically and carry out the pressure release, and then makes the internal gas pressure of inner tank body 101 can keep steady state.

Further, the fixing unit comprises a fixing cylinder 3 fixedly connected to the rotating shaft 206, a movable groove is formed in the top end of the fixing cylinder 3, a sliding rod 302 is connected in the movable groove in a sliding mode, a fixing block 303 is fixedly connected to the side wall of the bottom end of the mounting block 209, a fixing groove 304 is formed in the bottom of the fixing block 303, the top end of the sliding rod 302 extends into the fixing groove 304, an adjusting hole is formed in the inner wall of the bottom of the movable groove, a threaded rod 301 is connected in the adjusting hole in a rotating mode, and the sliding rod 302 is in threaded connection with the threaded rod 301; borrow by above-mentioned structure, through the setting of sliding rod 302, during the transportation, need rotate threaded rod 301 and drive sliding rod 302 and keep away from fixed slot 304, when the pressure of second air cavity was too big, can open valve 401 automatically and carry out the pressure release, accomplish the transportation back, reverse rotation threaded rod 301 drives sliding rod 302 and gets into fixed slot 304, can pin axis of rotation 206 for axis of rotation 206 can not take place to rotate the phenomenon and open valve 401.

Further, the alarm unit comprises a rotating hole formed in the inner wall of the exhaust pipe 4, a driving shaft 405 is rotatably connected in the rotating hole, one end of the driving shaft 405 is fixedly connected with an impeller 406, the impeller 406 is located in the exhaust pipe 4, the other end of the driving shaft 405 is fixedly connected with a turntable 407, and one side of the turntable 407 is fixedly connected with a cylindrical block 408; by means of the structure, through the arrangement of the impeller 406, in the pressure relief process, the inert gas can drive the impeller 406 to rotate, and the impeller 406 rotates to drive the driving shaft 405 and the rotating disc 407 to rotate, so that the purpose of generating power by using the sprayed gas is achieved.

Further, a mounting sleeve 5 is fixedly connected to the exhaust pipe 4, a movable hole is formed in one end of the mounting sleeve 5, an L-shaped slide bar 501 is connected to the movable hole in a sliding manner, the L-shaped slide bar 501 is matched with the cylindrical block 408, an impact block 502 is fixedly connected to one end of the L-shaped slide bar 501, a return spring 504 is sleeved on the L-shaped slide bar 501, and two ends of the return spring 504 are fixedly connected with the impact block 502 and the mounting sleeve 5 respectively; borrow by above-mentioned structure, through reset spring 504's setting, carousel 407 drives cylinder piece 408 carries out the circumference and rotates, and cylinder piece 408 rotates and can drive L shape slide bar 501 and remove every turn, and L shape slide bar 501 removes and drives reset spring 504 compression and take place elastic deformation, and when L shape slide bar 501 was kept away from to cylinder piece 408, reset spring 504 can drive L shape slide bar 501 and reset, and reset spring 504 can drive L shape slide bar 501 fast and reset after having realized the compression.

Furthermore, a vibrating bell 503 is attached to one side of the impact block 502, and one end of the vibrating bell 503 is fixedly connected to one side of the exhaust pipe 4; by means of the structure, through the arrangement of the vibration bell 503, the L-shaped sliding rod 501 which is reset quickly drives the impact block 502 to reset, and the impact block 502 which is reset quickly drives the vibration bell 503 to vibrate and give an alarm.

Further, one end of the exhaust pipe 4 is fixedly connected with an inert gas tank 402, one end of the inert gas tank 402, which is far away from the exhaust pipe 4, is fixedly connected with an air pump 403, an air inlet pipe 404 is fixedly connected in an air guide hole of the air pump 403, the inner walls of the outer tank body 1 and the inner tank body 101 are both provided with air inlet holes, and one end of the air inlet pipe 404 sequentially penetrates through the two air inlet holes and extends into the first air cavity; by means of the structure, the gas decompressed can be collected through the arrangement of the inert gas box 402, and the inert gas box 402 is provided with the gas pump 403, so that the inert gas can be conveniently supplemented into the first gas cavity.

Further, an interlayer between the outer tank body 1 and the inner tank body 101 is set as a vacuum layer 107, and the cylindrical outer side wall of the inner tank body 101 is fixedly sleeved with a refrigeration component 102; by means of the structure, the carbon dioxide is stored at low temperature through the arrangement of the refrigeration assembly 102, and the heat preservation effect is realized through the arrangement of the vacuum layer 107.

The specific working method comprises the following steps: when the air pressure inside the carbon dioxide is too large, the piston plate 103 can be extruded to move, the piston plate 103 can be moved to extrude the inert gas in the first gas cavity, the air pressure of the inert gas can be increased, two piston blocks 202 and the connecting rod 203 can be extruded to move at the same time, the connecting rod 203 can be moved to drive the fixed rack 204 to move, the fixed rack 204 can be moved to drive the rotating gear 205 and the rotating shaft 206 to rotate, the rotating shaft 206 rotates to drive the valve 401 to rotate and open, at the moment, the inert gas in the first gas cavity can be exhausted into the exhaust pipe 4 until the air pressure of the carbon dioxide is lower than the air pressure in the gas storage tank 201, at the moment, the air pressure in the gas storage tank 201 can extrude two piston blocks 202 and the connecting rod 203 to reset, the connecting rod 203 resets to drive the fixed rack 204, the rotating gear 205 and the rotating shaft 206 to reset, the rotating shaft 206 drives the valve 401 to reset and close, when the air pressure inside the transport tank is too large, the inert gas can be automatically exhausted to relieve, the carbon dioxide gas cannot be leaked to cause resource waste, and automatic pressure relief is realized through a mechanical structure, the failure is not easy to occur, the service life is long, and the cost is low.

When the valve 401 is opened to relieve pressure, gas can impact the impeller 406 to rotate, the impeller 406 rotates to drive the driving shaft 405 and the rotary table 407 to rotate, the rotary table 407 rotates to drive the cylindrical block 408 to rotate circumferentially, the cylindrical block 408 can extrude the L-shaped sliding rod 501 and the impact block 502 to move when rotating, the L-shaped sliding rod 501 moves to drive the reset spring 504 to move and generate elastic deformation, when the cylindrical block 408 is far away from the L-shaped sliding rod 501, the reset spring 504 can drive the L-shaped sliding rod 501 and the impact block 502 to reset, the impact block 502 can impact the vibration bell 503 to vibrate to generate an alarm, automatic pressure relief can be realized while alarm is given, and then the pressure relief can be timely reminded to occur to workers, the workers are reminded to slow down the vehicle speed, and the vehicle can stably run.

At the pressurized in-process, rotate threaded rod 301 earlier and drive slide bar 302 and remove down for slide bar 302 shifts out fixed slot 304, and then can remove the fixed to axis of rotation 206, accomplishes the transportation back, and reverse rotation threaded rod 301 drives slide bar 302 and gets into fixed slot 304 again, has realized fixing axis of rotation 206 and has provided the guarantee to axis of rotation 206, and the effectual axis of rotation 206 that has prevented receives external force and takes place the rotation phenomenon.

The previous description is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a low temperature carbon dioxide transport tank, includes outer jar of body (1), its characterized in that: an inner tank body (101) is fixedly connected in the outer tank body (1), a piston plate (103) is connected to the inner wall of the inner tank body (101) in a sliding manner, a first gas cavity is arranged in the space above the piston plate (103), a second gas cavity is arranged in the space below the piston plate (103), two fixed columns (104) are fixedly connected to the inner wall of the top of the inner tank body (101), chutes are formed in the bottoms of the two fixed columns (104), two movable columns (105) are connected in the chutes in a sliding manner, the bottoms of the two movable columns (105) are fixedly connected to the top of the piston plate (103), expansion springs (106) are sleeved on the two movable columns (105), two ends of each expansion spring (106) are fixedly connected with the fixed columns (104) and the piston plate (103) respectively, fixing holes are formed in the inner walls of the inner tank body (101) and the outer tank body (1), connecting pipes (2) are fixedly connected in the two fixing holes, one end of each connecting pipe (2) is fixedly communicated with a gas storage tank (201), the other end of each connecting pipe (2) is connected with a second gas cavity, two automatic connecting pipes (202) are arranged on the inner side of each other gas storage tank body (202), and each other connecting pipe (2), and each other automatic connecting pipe (202) is connected with a pressure relief mechanism, one of the connecting rods (203) is fixedly connected with a fixed rack (204) on one side, a rotating hole is formed in the inner wall of the connecting pipe (2), a rotating shaft (206) is rotatably connected in the rotating hole, a rotating gear (205) is fixedly connected at the bottom end of the rotating shaft (206), the rotating gear (205) is meshed with the fixed rack (204), a mounting block (209) is rotatably sleeved on the rotating shaft (206), one side of the mounting block (209) is fixedly connected to the outer cylindrical lateral wall of the outer tank body (1), air outlet holes are formed in the inner walls of the outer tank body (1) and the inner tank body (101), an exhaust pipe (4) is fixedly connected in each air outlet hole, a valve (401) is fixedly connected on the exhaust pipe (4), the top end of the rotating shaft (206) is fixedly connected with the rotating end of the valve (401), the rotating shaft (206) rotates to drive the valve (401) to rotate and open, at the moment, inert gas in the first gas cavity can be discharged into the exhaust pipe (4), the air pressure of carbon dioxide is lower than that in the rotating shaft (201), at the connecting rod (203) and the connecting rod can extrude the connecting rod (203) and drive the connecting rod (203) and the fixed rack (204) to reset, the gas storage tank (206) and reset, the gas storage rack (206) and reset, axis of rotation (206) drive valve (401) resets and closes, has realized when the inside atmospheric pressure of transportation jar is too big, can the automatic discharge inert gas carry out the pressure release, install fixed unit on axis of rotation (206), install alarm unit on blast pipe (4), fixed unit include fixed connection in stationary cylinder (3) on axis of rotation (206), the activity groove has been seted up on the top of stationary cylinder (3), sliding connection has sliding bar (302) in the activity groove, the bottom lateral wall fixedly connected with fixed block (303) of installation piece (209), fixed slot (304) have been seted up to fixed block (303) bottom, the top of sliding bar (302) extends to in fixed slot (304), the regulation hole has been seted up to the bottom inner wall in activity groove, the regulation hole internal rotation is connected with threaded rod (301), sliding bar (302) spiro union in on threaded rod (301).

2. The cryogenic carbon dioxide transport vessel of claim 1, wherein: another sliding sleeve has cup jointed fixed sleeve (207) on connecting rod (203), one side fixed connection in of fixed sleeve (207) the inner wall of connecting pipe (2), the inner wall fixedly connected with gag lever post (208) of connecting pipe (2), gag lever post (208) with fixed sleeve (207) with tooth looks adaptation on running gear (205).

3. The cryogenic carbon dioxide transport vessel of claim 1, wherein: the alarm unit comprises a rotating hole formed in the inner wall of the exhaust pipe (4), a driving shaft (405) is connected to the rotating hole in a rotating mode, an impeller (406) is fixedly connected to one end of the driving shaft (405), the impeller (406) is located in the exhaust pipe (4), a rotating disc (407) is fixedly connected to the other end of the driving shaft (405), and a cylindrical block (408) is fixedly connected to one side of the rotating disc (407).

4. The cryogenic carbon dioxide transport vessel of claim 3, wherein: fixedly connected with installation sleeve pipe (5) on blast pipe (4), the activity hole has been seted up to the one end of installation sleeve pipe (5), sliding connection has L shape slide bar (501) in the activity hole, L shape slide bar (501) with cylinder piece (408) looks adaptation, the one end fixedly connected with impact piece (502) of L shape slide bar (501), reset spring (504) have been cup jointed on L shape slide bar (501), reset spring (504) both ends respectively with impact piece (502) with installation sleeve pipe (5) fixed connection.

5. The cryogenic carbon dioxide transport vessel of claim 4, wherein: shock bell (503) is laminated to one side of impact piece (502), the one end fixed connection in one side of blast pipe (4) of shock bell (503).

6. The cryogenic carbon dioxide transport vessel of claim 5, wherein: one end fixedly connected with inert gas case (402) of blast pipe (4), keep away from inert gas case (402) the one end fixedly connected with air pump (403) of blast pipe (4), fixedly connected with intake pipe (404) in the air guide hole of air pump (403), the outer jar of body (1) with the inlet port has all been seted up to the inner wall of the inner tank body (101), the one end of intake pipe (404) runs through two in proper order the inlet port extends to first gas intracavity.

7. The cryogenic carbon dioxide transport vessel of claim 6, wherein: an interlayer between the outer tank body (1) and the inner tank body (101) is set as a vacuum layer (107), and the outer cylindrical side wall of the inner tank body (101) is fixedly sleeved with a refrigeration component (102).