CN216480215U - Vacuum heat insulation storage tank for storing high-toxicity medium - Google Patents

Abstract

The utility model provides a vacuum insulation storage tank for storing highly toxic medium, it includes storage tank body, pipeline unit, explosion-proof unit and compensation unit. The bilayer structure of storage tank body compares current individual layer danger article medium storage tank, and the effect that keeps warm is better, if the emergence is leaked, toxic medium can be detained in outer jar body, can directly not expose in external environment, has better environmental protection performance and higher factor of safety. Meanwhile, the liquid inlet pipe in the pipeline unit is combined with the self characteristic of the high-toxicity medium, so that the internal pressure of the inner tank body can be increased in the liquid inlet process, the high-toxicity medium is stored in the inner tank body under pressure, and the emission of toxic gas is effectively avoided. In addition, the storage tank body is also provided with an explosion-proof unit and a compensation unit, so that the influence of leakage of the inner tank body on the external environment and the personnel safety can be reduced, the temperature difference stress of the inner tank body and the outer tank body can be effectively coped with, and the vacuum heat-insulation storage tank is ensured to stably store highly toxic media.

Description

Vacuum heat insulation storage tank for storing high-toxicity medium

Technical Field

The utility model relates to a storage and transportation container technical field, in particular to a vacuum insulation storage tank for storing highly toxic medium.

Background

Hazardous chemical substances are closely related to national economic development, and each correction and execution of hazardous chemical safety management regulations issued by State administration puts higher-level requirements on production, transportation, use and storage of the hazardous chemical substances.

Researchers do analysis on the safety and environmental protection level and environmental pollution accidents which occur in the storage and transportation process of the dangerous chemical industry enterprises in recent years, and the results show that the current safety and environmental protection level is improved, but the form is still severe, the accident rate in the storage and transportation link is obviously higher than that in the production link, and the concentrated expression is shown in the storage and transportation of high-toxicity media.

At present, the general structure of high toxicity media storage includes: the tank body part, the liquid inlet and outlet pipeline, the safe discharge unit and the like, and has the characteristics of low manufacturing cost, simple installation and the like. However, when the medium temperature variation range is large, the storage tank body part is easy to damage, and the use is affected. Meanwhile, high-toxicity and high-risk media are easy to leak, and once the media leak, irretrievable loss is caused to the life and property safety of people. In addition, most of the storage forms are normal-pressure storage, and toxic gas is directly discharged into the atmosphere to influence the environment.

Therefore, the research and development of a new high-toxicity medium storage structure form is necessary to improve the national safety and environmental protection level.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problems that the high-toxicity medium storage container in the prior art is easy to damage, the high-toxicity medium is easy to leak and the safety performance is poor.

In order to solve the technical problem, the utility model provides a vacuum insulation storage tank for storing highly toxic media, which comprises a storage tank body, a pipeline unit, an explosion-proof unit and a compensation unit, wherein the storage tank body comprises an inner tank body, an outer tank body arranged outside the inner tank body and a vacuum interlayer arranged between the outer tank body and the inner tank body; the inner tank body is used for storing a high-toxicity medium; the pipeline unit comprises a liquid inlet pipe, a liquid inlet valve connected to the end part of the liquid inlet pipe, a liquid outlet pipe and a liquid outlet valve connected to the end part of the liquid outlet pipe; the liquid inlet valve and the liquid outlet valve are both arranged on the outer tank body, the liquid inlet pipe is communicated with the inside of the inner tank body and is connected with the liquid inlet valve through the vacuum interlayer, and the liquid outlet pipe is communicated with the inside of the inner tank body and is connected with the liquid outlet valve through the vacuum interlayer; the explosion-proof unit is arranged at the top of the outer tank body; the explosion-proof unit comprises an explosion-proof pipe and an explosion-proof collector communicated with the explosion-proof pipe, and the explosion-proof pipe is communicated with the vacuum interlayer; the compensation unit is arranged on the outer tank body; the compensation unit comprises a compensation piece which is of a corrugated pipe structure.

Optionally, the vacuum insulation storage tank further comprises an interlayer purge valve, and the interlayer purge valve is arranged on the outer tank body and communicated with the vacuum interlayer.

Optionally, the axis of the compensator is parallel to the axis of the tank body.

Optionally, the compensation unit further comprises a fixing member, and the compensation member is fixed on the outer tank body through the fixing member.

Optionally, the pipeline unit further includes a gas phase pipe and a gas phase valve connected to an end of the gas phase pipe, the gas phase valve is disposed at a top of the outer tank, and the gas phase pipe is communicated with an inside of the inner tank and connected to the gas phase valve through the vacuum interlayer.

Optionally, the pipeline unit still includes the liquid level survey buret and connects the liquid level measurement valve at the liquid level survey pipe tip, the liquid level measurement valve sets up the bottom of the outer jar of body, the liquid level survey buret with the inside intercommunication of the inner tank body, and the warp vacuum intermediate layer and with the liquid level measurement valve is connected.

Optionally, the pipeline unit further includes a safety discharge pipe and a safety discharge valve connected to an end of the safety discharge pipe, the safety discharge valve is disposed on the outer tank, the safety discharge pipe communicates with the inside of the inner tank and is connected to the safety discharge valve through the vacuum interlayer.

Optionally, the inner tank body is a stainless steel tank body, and the outer tank body is a carbon steel tank body.

According to the above technical scheme, the beneficial effects of the utility model are that: the utility model is used for in the vacuum insulation storage tank of storing high poison medium, the bilayer structure setting of storage tank body compares in current individual layer danger article medium storage tank, and the heat preservation effect is better, if take place to leak, poisonous medium can be detained in the outer jar of body, can not directly expose in external environment, has better feature of environmental protection and higher factor of safety. Meanwhile, the liquid inlet pipe in the pipeline unit is combined with the self characteristic of the high-toxicity medium, so that the internal pressure of the inner tank body can be increased in the liquid inlet process, the high-toxicity medium is stored in the inner tank body under pressure, and the emission of toxic gas is effectively avoided. In addition, the storage tank body is also provided with an explosion-proof unit and a compensation unit, so that the influence of leakage of the inner tank body on the external environment and the personnel safety can be reduced, the temperature difference stress of the inner tank body and the outer tank body can be effectively coped with, and the vacuum heat-insulation storage tank is ensured to stably store highly toxic media.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the vacuum insulation storage tank for storing highly toxic media according to the present invention.

Fig. 2 is a schematic structural view of an explosion-proof unit in a vacuum insulation storage tank shown in fig.

Fig. 3 is a sectional view taken along the direction E-E in fig. 1.

Fig. 4 is a sectional view taken along the direction F-F in fig. 1.

The reference numerals are explained below: 100. a vacuum heat-insulating storage tank; 10. a tank body; 11. an inner tank body; 12. an outer tank body; 13. vacuum interlayer; 20. a piping unit; 211. a liquid inlet pipe; 212. a liquid inlet valve; 221. a liquid outlet pipe; 222. a liquid outlet valve; 231. a gas phase pipe; 232. a gas phase valve; 241. a liquid level measuring tube; 242. a liquid level measuring valve; 251. a safety vent; 252. a safety vent valve; 30. an explosion-proof unit; 31. an explosion-proof tube; 32. an explosion-proof collector; 321. an explosion-proof body; 3211. an explosion-proof port; 322. an explosion-proof cover; 323. a protective cover; 324. a seal ring; 40. a compensation unit; 41. a compensating member; 42. a fixing member; 50. a support leg; 60. an interlayer drain valve; 71. a flange; 72. pressing a plate; 73. a connecting member; 74. an interlayer member; 75. a multi-well plate.

Detailed Description

Exemplary embodiments that embody features and advantages of the present invention will be described in detail in the following description. It is to be understood that the invention is capable of other and different embodiments, and its several details are capable of modification in various other respects, all without departing from the scope of the invention, and that the description and drawings are to be regarded as illustrative in nature, and not as restrictive.

For further explanation of the principles and construction of the present invention, reference will now be made in detail to the preferred embodiments of the present invention, which are illustrated in the accompanying drawings.

Referring to fig. 1, an embodiment of the present application provides a vacuum insulation storage tank 100 for storing a highly toxic medium, so as to achieve safe storage of hazardous chemical substances with highly toxic characteristics and improve environmental protection performance of storing the highly toxic medium. The vacuum insulation storage tank 100 of the present embodiment includes a tank body 10, a piping unit 20, an explosion-proof unit 30, and a compensation unit 40.

The storage tank body 10 comprises an inner tank body 11, an outer tank body 12 arranged outside the inner tank body 11, and a vacuum interlayer 13 arranged between the inner tank body and the inner tank body 11. The interior of the inner tank 11 is used for storing highly toxic media.

The pipe unit 20 includes a liquid inlet pipe 211 and a liquid inlet valve 212 connected to an end of the liquid inlet pipe 211, and a liquid outlet pipe 221 and a liquid outlet valve 222 connected to an end of the liquid outlet pipe 221. Wherein, the liquid inlet valve 212 and the liquid outlet valve 222 are both arranged on the outer tank 12. The liquid inlet pipe 211 is communicated with the inside of the inner tank 11 and is connected with the liquid inlet valve 212 through the vacuum interlayer 13. The liquid outlet pipe 221 is communicated with the inside of the inner tank 11 and is connected with the liquid outlet valve 222 through the vacuum interlayer 13.

An explosion-proof unit 30 is arranged on the top of the outer tank 12, the explosion-proof unit 30 comprises an explosion-proof pipe 31 and an explosion-proof collector 32 communicated with the explosion-proof pipe 31, and the explosion-proof pipe 31 is communicated with the vacuum interlayer 13. The compensating unit 40 is disposed on the outer tank 12, and the compensating unit 40 includes a compensating member 41, and the compensating member 41 has a flexible bellows-like structure.

Compare in current individual layer danger article medium storage tank, the vacuum insulation storage tank 100 of this application keeps warm effectually, and the temperature is stable, and the change interval is little, and the short time is stored and need not additionally increase the equipment of heating when using to the operation, and the long-time storage shortens the time of heating in the effective temperature interval of medium, simplifies the medium and uses the flow.

The heat insulating materials adopted by the existing single-layer hazardous chemical medium storage tank are polyurethane foam plastics, asbestos and glass wool, the effective heat conductivity coefficient of the polyurethane foam plastics under the atmospheric pressure is 0.041-0.046W/m.K, the effective heat conductivity coefficient of the asbestos is 0.113W/m.K, and the effective heat conductivity coefficient of the glass wool is 0.038W/m.K. In the vacuum insulation storage tank 100 of the present invention, the effective thermal conductivity of the pearlite sand in a vacuum state is 0.0017W/m.k, and the thermal insulation is improved by about 20 times in terms of the thermal insulation form.

Further, the vacuum insulation storage tank 100 of the present embodiment is a vertical storage tank, and the vacuum insulation storage tank 100 further includes a leg 50. The legs 50 are provided in pairs, and two legs 50 are provided at intervals at the bottom of the outer tank 12 to stably support the tank body 10 on the ground.

In this embodiment, the inner tank 11 is a stainless steel tank, and the inside of the inner tank 11 is used for storing highly toxic media, which may be phosphorus trichloride, liquid chlorine, and the like. The material containing performance of the stainless steel is strong, the requirements of different hazardous chemical substance media on the material of the storage container can be met, and the safe storage of the high-toxicity medium is ensured.

An outer tank body 12 is arranged outside the inner tank body 11, and the outer tank body 12 is a carbon steel tank body. The carbon steel material of the outer tank body 12 can further ensure the overall structural strength of the storage tank body 10, ensure the storage stability of the highly toxic medium in the storage tank body 10, and improve the safety factor. A thermometer can be arranged on the inner wall of the inner tank body 11, when the medium of the inner tank body 11 leaks to cause vacuum loss, the heat conductivity changes, the temperature change rate is increased, and the thermometer is helpful for prompting the abnormity of the vacuum interlayer 13.

A vacuum interlayer 13 is arranged between the inner tank body 11 and the outer tank body 12, and the heat preservation of the inner tank body 11 can be realized through the vacuum interlayer 13. Meanwhile, the isolation belt can be leaked from the vacuum interlayer 13, and when the inner tank body 11 is leaked, high-toxicity media can directly enter the vacuum interlayer 13. In the embodiment, the vacuum degree of the vacuum interlayer 13 can be periodically detected by a vacuum detection device, and the vacuum degree is 3Pa-65Pa (absolute pressure) and is normal vacuum.

Compared with a single-layer storage container for high-toxicity media, the outer tank body 12 of the vacuum heat-insulation storage tank 100 can be used as an outer layer for protection, the high-toxicity media are prevented from being directly leaked to the external environment, leakage of materials is effectively prevented, and the environmental protection performance is improved. Further, in the pipe unit 20 of the present embodiment, both the liquid inlet pipe 211 and the liquid inlet valve 212 are disposed at the bottom of the inner tank 11. Wherein, the liquid inlet valve 212 is arranged on the outer tank body 12, and the liquid inlet pipe 211 is arranged in the vacuum interlayer 13. One end of the liquid inlet pipe 211 is communicated with the inside of the inner tank 11, and the other end is connected with the liquid inlet valve 212.

The operator can control the on-off of the liquid inlet pipe 211 by controlling the liquid inlet valve 212. The liquid inlet pipe 211 is used for injecting a highly toxic medium into the interior of the inner tank 11, so that the highly toxic medium is stored in the inner tank 11. The liquid inlet pipe 211 is arranged in the vacuum interlayer 13, and the vacuum interlayer 13 can insulate the liquid inlet pipe 211.

For high-toxicity media such as phosphorus trichloride, liquid chlorine and the like, in the process of injecting the high-toxicity media into the tank body through the liquid inlet pipe 211, under the action of room temperature, the temperature of the high-toxicity media rises, so that the pressure of the high-toxicity media is increased, the high-toxicity media are stored in the inner tank body 11 under pressure, and the safety of storing high-toxicity hazardous chemicals is improved.

The bottom of the inner tank 11 is also provided with a liquid outlet pipe 221 and a liquid outlet valve 222. Wherein, the liquid outlet valve 222 is arranged on the outer tank 12, and the liquid outlet pipe 221 is arranged in the vacuum interlayer 13. One end of the liquid outlet pipe 221 is communicated with the inside of the inner tank 11, and the other end is connected with the liquid outlet valve 222.

The liquid outlet pipe 221 is used for discharging the highly toxic medium in the inner tank 11, and the liquid outlet valve 222 can control the on-off of the liquid outlet pipe 221. The liquid outlet pipe 221 is arranged in the vacuum interlayer 13, and the vacuum interlayer 13 can insulate the liquid outlet pipe, so that the temperature of a high-toxicity medium in the liquid outlet pipe 221 is ensured, and the overlarge change of the liquid discharging temperature difference is avoided.

In the present embodiment, the pipe unit 20 further includes a gas phase pipe 231 and a gas phase valve 232. Wherein, the gas phase valve 232 is arranged on the outer tank 12 and is positioned at the top of the outer tank 12.

The gas phase pipe 231 is provided in the vacuum interlayer 13, and the vacuum interlayer 13 can keep the gas phase pipe 231 warm. One end of the gas phase pipe 231 is communicated with the gas phase space at the top of the inner tank 11, and the other end is connected with the gas phase valve 232. The gas phase valve 232 is used for controlling the on-off of the gas phase pipe 231.

The pipe unit 20 of the present embodiment further includes a liquid level measurement pipe 241 and a liquid level measurement valve 242. Wherein, the liquid level measuring valve 242 is arranged on the outer tank 12 and is positioned at the bottom of the outer tank 12.

The liquid level measuring tube 241 is arranged in the vacuum interlayer 13, and the vacuum interlayer 13 can keep the liquid level measuring tube 241 warm. One end of the liquid level measuring pipe 241 is communicated with the inside of the inner tank 11, and the other end is connected with the liquid level measuring valve 242. Through the liquid level measuring tube 241, the operator can measure the liquid level of the highly toxic medium inside the inner tank 11, and know the capacity of the highly toxic medium inside the inner tank 11 in real time. The liquid level measuring valve 242 is used for controlling the on-off of the liquid level measuring pipe 241.

In addition, the piping unit 20 of the present embodiment further includes a safety vent 251 and a safety vent valve 252. Wherein, the safety vent valve 252 is disposed on the outer tank 12 and is located at the top of the outer tank 12.

The safety discharge pipe 251 is arranged in the vacuum interlayer 13, and the vacuum interlayer 13 can keep the temperature of the safety discharge pipe 251 to avoid damage to the safety discharge pipe 251 caused by excessive temperature difference. One end of the safety discharge pipe 251 communicates with the inside of the inner vessel 11, and the other end is connected to the safety discharge valve 252.

Through the safe discharge valve 252, the safe discharge of gaseous highly toxic medium in the inner tank body 11 can be realized, safety accidents caused when the highly toxic medium is discharged are avoided, and meanwhile, the influence on the external environment when the highly toxic medium is discharged can also be prevented. The safety vent valve 252 is used to control the opening and closing of the safety vent pipe 251.

Further, the explosion proof unit 30 of the present embodiment is provided at the top of the outer tank 12. The explosion proof unit 30 includes an explosion proof tube 31 and an explosion proof collector 32.

An explosion proof collector 32 is provided on the top of the outer can 12, and the explosion proof collector 32 has an accommodating space therein. The explosion-proof collector 32 and the explosion-proof tube 31 of the present embodiment are both made of explosion-proof materials, and both have high safety explosion-proof coefficients.

The explosion-proof material can be a metal material or a non-metal material, wherein the non-metal material is PVC, polyurethane or ceramic, and the metal material is aluminum alloy, stainless steel, titanium or copper. It is to be understood that the explosion-proof material is not limited to the above-listed substances, and may be other materials as long as the explosion-proof performance of the explosion-proof collector 32 and the explosion-proof tube 31 can be secured.

The explosion-proof tube 31 of the present embodiment is communicated with the vacuum interlayer 13 and the inner accommodating space of the explosion-proof collector 32, respectively. When the highly toxic medium in the inner tank 11 leaks, the highly toxic medium enters the vacuum interlayer 13, and due to the change of temperature, part of the liquid highly toxic medium is converted into gas, so that the pressure inside the vacuum interlayer 13, i.e. the outer tank 12, is increased.

Through the explosion-proof tube 31, the gaseous highly toxic medium can enter the explosion-proof collector 32, so as to prevent the internal pressure of the outer tank 12 from being too high, avoid explosion damage of the outer tank 12, and ensure the overall safety of the vacuum heat-insulating storage tank 100. Meanwhile, the explosion-proof tube 31 and the explosion-proof collector 32 have explosion-proof performance, and safety can be further improved. In addition, explosion-proof collector 32 can collect toxic gas, avoids revealing of toxic gas, promotes environmental protection performance and factor of safety effectively.

The explosion-proof tube 31 and the explosion-proof collector 32 are arranged on the outer tank body 12, and when the vacuum interlayer 13 is in a vacuum state, the explosion-proof tube 31 and the explosion-proof collector 32 bear external pressure close to 0.1MPa due to the fact that the atmospheric pressure is 0.1MPa, and sealing of the cover plate of the explosion-proof device can be guaranteed. When the vacuum is completely lost and the pressure in the vacuum interlayer 13 exceeds 0.1MPa, the pressure acting on the inner side of the cover plate is greater than the gravity of the cover plate, the cover plate falls off, and the medium is guided to a preset safety position through the explosion-proof pipe 31. The explosion-proof collector 32 can ensure that the outer tank 12 cannot explode due to overpressure after the medium of the inner tank 11 leaks to the vacuum interlayer 13, and meanwhile, the medium leakage cannot occur.

As shown in fig. 2, the explosion-proof collector 32 of the present embodiment includes an explosion-proof body 321, an explosion-proof cover 322 and a protective cover 323, wherein the explosion-proof body 321 is provided with an explosion-proof opening 3211, and the explosion-proof cover 322 is covered at the explosion-proof opening 3211. The explosion-proof collector 32 further comprises a sealing ring 324, and the sealing ring 324 is arranged at the explosion-proof opening 3211 to realize the sealing of the explosion-proof body 321 and the explosion-proof cover 322. The protective cover 323 is provided on the outer periphery of the explosion-proof cover 322, and the explosion-proof tube 31 communicates with the protective cover 323.

Further, as shown in fig. 3, a compensation unit 40 of the present embodiment is provided on the top of the tank body 10, and the compensation unit 40 includes a compensation member 41 and a fixing member 42.

Wherein the compensating member 41 has a bellows-like structure having an elastically stretchable space. The compensator 41 is arranged at a tuning fork liquid level meter connecting pipe and is fixed by a fixing piece 42. The compensating part 41 is connected to the outer tank 12 through a fixing part 42, and one end is connected to a steel pipe connected to the inner tank 11. In this embodiment, the compensator 41 may be an expansion joint.

Because the steel pipe that communicates on the inner tank body 11 does not have the flexibility, through set up compensating part 41 on storage tank body 10, when storage tank body 10 stored highly toxic medium because of expend with heat and contract with cold and produced the position, compensating part 41 can compensate storage tank body 10 axial deformation through self structure, compensate the thermal expansion difference that inner tank body 11 and outer tank body 12 produced because of the temperature difference promptly, reduce the axial load of inner tank body 11 and outer tank body 12, thereby reduce the temperature difference stress of inner tank body 11 and outer tank body 12, avoid the unstability of storage tank body 10 to destroy, guarantee the stability of vacuum insulation storage tank 100 overall structure.

In the present embodiment, the axis of the compensator 41 is parallel to the axis of the tank body 10, that is, the axis of the compensator 41 is parallel to the axis of the outer tank 12 or the axis of the inner tank 11.

The arrangement can make the compensation deformation direction of the compensator 41 generated by the structure of the compensator consistent with the axial deformation of the storage tank body 10, so that the compensation direction conforms to the deformation direction, the effectiveness of the compensator 41 in compensating the thermal expansion difference is ensured, and the stable storage of the height medium by the vacuum heat insulation storage tank 100 is ensured.

In addition, the vacuum insulation storage tank 100 of the present embodiment further includes a sandwich purge valve 60. The interlayer purge valve 60 is disposed on the outer tank 12 and communicates with the vacuum interlayer 13.

In this embodiment, the interlayer purge valve 60 is an ultra-high vacuum valve. Through setting up intermediate layer purge valve 60 can carry out the processing of evacuation to vacuum interlayer 13, can also carry out regular sampling inspection to vacuum interlayer 13's inside, know the condition whether the inner tank body 11 reveals in real time. In addition, the high-toxicity medium leaked into the vacuum interlayer 13 can be emptied through the interlayer emptying valve 60, and the high-toxicity medium can be safely transferred. After the vacuum degree of the vacuum interlayer 13 exceeds 65Pa, the interlayer exhaust valve 60 can be used for vacuumizing to ensure that the vacuum degree of the vacuum interlayer 13 meets the heat insulation requirement. When the abnormal rise of the vacuum is detected, the interlayer drain valve 60 can be immediately started for detection.

As shown in fig. 4, the sandwich exhaust valve 60 of the present embodiment is fixed to the outer tank 12 by a connecting member. Specifically, the connecting assembly includes a flange 71, a pressure plate 72, and a connecting member 73.

The flange 71 is connected to the top of the sandwich purge valve 60, and the flange 71 is connected to the outer tank 12 by a connector 73, wherein the connector 73 can be a bolt or a pin. A pressure plate 72 is disposed between the flange 71 and the outer surface of the outer can 12.

In this embodiment, the connection assembly further comprises a sandwich 74 and a perforated plate 75. A sandwich element 74 is arranged between the press plate 72 and the flange 71, the sandwich element 74 being a glass fibre cloth and a steel mesh. A porous plate 75 is provided between the sandwich member 74 and the flange 71, and the porous plate 75 is provided above the sandwich exhaust valve 60.

To the adiabatic storage tank in vacuum of this embodiment, the bilayer structure setting of storage tank body compares in current individual layer danger article medium storage tank, and the effect that keeps warm is better, if the emergence is leaked, toxic medium can be detained in the outer jar of body, can directly not expose in external environment, has better environmental protection performance and higher factor of safety. Meanwhile, the liquid inlet pipe in the pipeline unit is combined with the self characteristic of the high-toxicity medium, so that the increase of the internal pressure of the inner tank body can be realized in the liquid inlet process, the high-toxicity medium is stored under pressure in the inner tank body, and the emission of toxic gas is effectively avoided. In addition, the storage tank body is also provided with an explosion-proof unit and a compensation unit, so that the influence of leakage of the inner tank body on the external environment and the personnel safety can be reduced, the temperature difference stress of the inner tank body and the outer tank body can be effectively coped with, and the vacuum heat-insulation storage tank is ensured to stably store highly toxic media.

While the present invention has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims (8)

1. A vacuum insulated storage tank for storing highly toxic media, comprising:

the storage tank comprises a storage tank body and a storage tank body, wherein the storage tank body comprises an inner tank body, an outer tank body arranged outside the inner tank body and a vacuum interlayer arranged between the outer tank body and the inner tank body; the inner tank body is used for storing a high-toxicity medium;

the pipeline unit comprises a liquid inlet pipe, a liquid inlet valve connected to the end part of the liquid inlet pipe, a liquid outlet pipe and a liquid outlet valve connected to the end part of the liquid outlet pipe; the liquid inlet valve and the liquid outlet valve are both arranged on the outer tank body, the liquid inlet pipe is communicated with the inside of the inner tank body and is connected with the liquid inlet valve through the vacuum interlayer, and the liquid outlet pipe is communicated with the inside of the inner tank body and is connected with the liquid outlet valve through the vacuum interlayer;

the explosion-proof unit is arranged at the top of the outer tank body; the explosion-proof unit comprises an explosion-proof pipe and an explosion-proof collector communicated with the explosion-proof pipe, and the explosion-proof pipe is communicated with the vacuum interlayer;

the compensation unit is arranged on the outer tank body; the compensation unit comprises a compensation piece which is of a corrugated pipe-shaped structure.

2. The vacuum insulated storage tank for storing highly toxic media according to claim 1, further comprising an interlayer purge valve disposed on the outer tank body and in communication with the vacuum interlayer.

3. The vacuum insulated storage tank for storing highly toxic media according to claim 1, wherein the axis of the compensator is parallel to the axis of the storage tank body.

4. The vacuum insulated storage tank for storing highly toxic media according to claim 1, wherein the compensating unit further comprises a fixing member by which the compensating member is fixed to the outer tank.

5. The vacuum insulation storage tank for storing highly toxic media according to claim 1, wherein the piping unit further comprises a gas phase pipe and a gas phase valve connected to an end of the gas phase pipe, the gas phase valve being disposed at a top of the outer tank, the gas phase pipe communicating with an inside of the inner tank and being connected to the gas phase valve through the vacuum interlayer.

6. The vacuum insulation storage tank for storing highly toxic media according to claim 1, wherein the pipeline unit further comprises a liquid level measuring pipe and a liquid level measuring valve connected to the end of the liquid level measuring pipe, the liquid level measuring valve is disposed at the bottom of the outer tank body, and the liquid level measuring pipe communicates with the inside of the inner tank body and is connected to the liquid level measuring valve through the vacuum interlayer.

7. The vacuum insulation storage tank for storing highly toxic media according to claim 1, wherein the piping unit further comprises a safety vent and a safety vent valve connected to an end of the safety vent, the safety vent valve being provided on the outer tank, the safety vent being communicated with the inside of the inner tank and connected to the safety vent valve through the vacuum interlayer.

8. The vacuum insulated storage tank for storing highly toxic media according to claim 1, wherein the inner tank is a stainless steel tank and the outer tank is a carbon steel tank.

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