CN202613040U - Interlayer low-temperature storage tank - Google Patents

Abstract

The utility model discloses an interlayer low-temperature storage tank, which belongs to the sealing field. The interlayer low-temperature storage tank includes an outer cylinder and an inner cylinder, the outer cylinder and the inner cylinder form a heat-insulating space, and the upper end of the outer cylinder is provided with a K vacuum device, and the middle part of the bottom end of the outer cylinder is provided with a vacuum device , the interlayer between the outer cylinder and the inner cylinder is filled with pearlite, and the bottom of the inner cylinder is provided with several saddle supports. The interlayer low-temperature storage tank provided in this embodiment improves the safety of the interlayer low-temperature storage tank during transportation by providing multiple saddle supports on the outer cylinder, and the interlayer is filled with pearlite, and the heat insulation method adopts powder Vacuum technology can achieve the effect of heat insulation after the interlayer is vacuumed. The interlayer low-temperature storage tank has good low-temperature heat insulation effect, good support strength, convenient use, high loading rate, safety and reliability, high purity of stored gas, and high vacuum degree. And the advantages of high vacuum life, mainly used for storage of liquid oxygen, liquid nitrogen, liquid argon and other cryogenic liquids.

Description

Interlayer cryogenic storage tank

technical field

The utility model relates to the sealing field, in particular to an interlayer low-temperature storage tank.

Background technique

With the development of the economy and the popularization of cryogenic technology, the application of cryogenic liquids such as liquid nitrogen, liquid oxygen, liquid ammonia, liquid hydrogen and liquefied natural gas is becoming more and more extensive, and the demand for cryogenic containers for storing and transporting cryogenic liquids in all walks of life continues to grow. The safety of cryogenic containers during transportation cannot be ignored.

Existing low-temperature storage tanks are divided into two types: high-pressure tanks and low-pressure tanks. The storage temperature is generally selected according to the boiling point of the liquid under normal pressure. Depending on the source of the material, the storage temperature and density of the material also vary with the specific conditions of the medium purity and components. It is different. When the stored materials have no stable source, resulting in different components, densities and temperatures of each batch of materials, cryogenic storage tanks need to have corresponding features to prevent the tumbling of the liquid in the tank caused by these differences.

Contents of the invention

In order to solve the problems of the prior art, the embodiment of the utility model provides a sandwich cryogenic storage tank. Described technical scheme is as follows:

A sandwich cryogenic storage tank, comprising an outer cylinder and an inner cylinder, the outer cylinder and the inner cylinder form a heat-insulating space, and an outer left seal and an outer right seal are respectively provided at both ends of the outer cylinder , the upper end of the outer cylinder is provided with a K vacuum device, and the middle part of the bottom of the outer cylinder is provided with a vacuum device;

The interlayer between the outer cylinder and the inner cylinder is filled with pearlite, and the bottom of the inner cylinder is provided with several saddle supports, and the saddle supports extend to the outer cylinder The outside of the vacuum pumping device is provided with a bottom first liquid port, a liquid discharge pipe and a liquid level liquid phase pipe, and the first liquid port at the bottom, the liquid discharge pipe and the liquid level liquid phase pipe communicate with each other, And the drain pipe extends to the outside of the outer cylinder, and the end of the drain pipe is also connected to a second cap;

The right end of the outer wall of the inner cylinder is provided with a second liquid port at the bottom, an air release pipe, an overflow port, and a liquid level gas phase pipe, and the air release pipe, the overflow port and the liquid level gas phase pipe are arranged on the In the space between the inner cylinder and the outer cylinder, the second liquid port at the bottom extends to the outside of the outer cylinder, and the end of the second liquid port at the bottom is also connected with a first cap.

As a preference of the above technical solution, the saddle supports are arranged at both ends of the bottom of the outer cylinder, and the upper end of each saddle support is provided with a first additional plate.

As a preference of the above technical solution, the saddle support is made of glass fiber reinforced plastic.

As a preference of the above technical solution, several rigid rings are arranged on the periphery of the outer cylinder.

As a preference of the above technical solution, the rigid ring is Q-235A steel.

As a preference of the above technical solution, the outer cylinder body, the outer left seal and the outer right seal are all made of Q345R steel.

As a preference of the above technical solution, the saddle support is Q345R steel or Q-235B steel.

As a preference of the above technical solution, the thickness of the outer cylinder is 10mm-12mm. the

The beneficial effect brought by the technical solution provided by the embodiment of the utility model is that a plurality of saddle-type supports are arranged on the outer cylinder body of the interlayer low-temperature storage tank, which provides a large supporting force for the interlayer low-temperature storage tank and improves the The safety of interlayer low-temperature storage tanks during transportation; the interlayer is filled with pearlite, and the heat insulation method adopts powder vacuum technology, which has good ultra-low temperature insulation performance, and can achieve heat insulation after the interlayer is vacuumed. The interlayer cryogenic storage tank has the advantages of good low temperature insulation effect, good support strength, convenient use, high loading rate, safety and reliability, high purity of stored gas, high vacuum degree and long vacuum life. It is mainly used for storing liquid oxygen, liquid nitrogen and liquid argon. and other cryogenic liquids.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some implementations of the present invention. For example, those of ordinary skill in the art can also obtain other drawings based on these drawings on the premise of not paying creative efforts.

Fig. 1 is the schematic structural view of the interlayer cryogenic storage tank provided by Embodiment 1 of the present utility model;

Among them, 1. Outer cylinder; 2. Inner cylinder; 3. Rigid ring; 4. Pearlescent sand; 5. Saddle support; 6. The first added plate;

7. Outer left seal; 8. First tube cap; 9. Second tube cap; 10. Outer right seal; 11. Vacuumizing device;

a. The first liquid port at the bottom; b. The second liquid port at the bottom; c. The liquid discharge pipe; d. The air release pipe; e. The overflow port;

Detailed ways

In order to make the purpose, technical solutions and advantages of the present utility model clearer, the implementation of the present utility model will be further described in detail below in conjunction with the accompanying drawings.

Example 1

Referring to Fig. 1, this embodiment provides a sandwich cryogenic storage tank, the sandwich cryogenic storage tank includes an outer cylinder 1 and an inner cylinder 2, the sandwich cryogenic storage tank is a double-layer result, and the inner cylinder 2 stores cryogenic liquid, To withstand the pressure and low temperature of the medium, the outer cylinder 1 is the protective layer of the inner cylinder 2, and keep a certain distance from the inner cylinder 2 to form a heat-insulating space, which can withstand the gravity load of the inner cylinder 2 and the medium and the vacuum of the heat-insulating layer Negative pressure, the two ends of the outer cylinder 1 are respectively provided with an outer left seal 7 and an outer right seal 10, the upper end of the outer cylinder 1 is provided with a K vacuum device, and the middle part of the bottom end of the outer cylinder 1 is provided with a vacuum device 11.

Wherein, the interlayer between the outer cylinder 1 and the inner cylinder 2 is filled with pearlite 4, and then the interlayer is evacuated. Due to the poor thermal conductivity of the pearlite, it can achieve the effect of heat insulation after vacuuming.

Several saddle supports 5 are arranged at the bottom of the inner cylinder 2, and the saddle supports extend to the outside of the outer cylinder 1, and the vacuum device 11 is provided with a bottom first liquid port a and a drain pipe c It communicates with the liquid level liquid phase pipe g, the first liquid port a at the bottom, the liquid discharge pipe c and the liquid level liquid phase pipe g, and the liquid discharge pipe c extends to the outside of the outer cylinder 1, and the end of the liquid discharge pipe A second cap 9 is also attached.

The right end of the outer wall of the inner cylinder body 2 is provided with the second liquid port b at the bottom, the air release pipe d, the overflow port e, and the liquid level gas phase pipe f, wherein the air release pipe d, the overflow port e and the liquid level gas phase pipe f are all in the In the space between the inner cylinder 2 and the outer cylinder 1 , the bottom second liquid port b extends to the outside of the outer cylinder 1 , and the end of the bottom second liquid port b is also connected with a first cap 8 .

The interlayer cryogenic storage tank is provided with a first additional plate 6 on the upper end of each saddle support 5 , and the first additional plate 6 is used for fixing the connected saddle supports 5 .

Preferably, in this embodiment, several rigid rings 3 are arranged on the outer periphery of the outer cylinder 1. The rigid rings 3 can be made of Q-235A steel. When the design pressure of the interlayer low-temperature storage tank is p≦1.0MPa, the service temperature of the steel plate is When the temperature is 0～250℃, the thickness of the rigid ring is not more than 12mm.

Preferably, an even number of saddle supports 5 are arranged at the bottom of the interlayer cryogenic storage tank, respectively located at both ends of the interlayer cryogenic storage tank. Preferably, the saddle support 5 in this embodiment is made of glass fiber reinforced plastic, supported on the interlayer to support the interlayer low-temperature storage tank, wherein the number of saddle support 5 provided at the two ends is the same, and two can be provided respectively , 3 or 4, generally speaking, there are no more than 8 saddle supports 5, that is to say, no more than 4 saddle supports 5 provided at the two ends. In addition, a first additional plate 6 can also be provided outside each saddle support 5 to reinforce the saddle support 5. The first additional plate is made of stainless heat-resistant steel, such as 0Cr18Ni9.

Preferably, the outer cylinder 1, the saddle support 5, the outer left seal 7 and the outer right seal 10 can be made of Q345R steel, which is a special plate for pressure vessels with a yield strength of 340MPa, and has good comprehensive mechanical properties and process performance. In addition, the saddle support 5 can also be made of Q-235B steel, the design pressure of the vessel is p≦1.6MPa, the service temperature of the steel plate is 0-350°C, and the steel plate thickness of the saddle support for the vessel shell is not greater than 20mm .

Preferably, the thickness of the outer cylinder is 10mm-12mm.

The interlayer low-temperature storage tank provided in this embodiment is provided with multiple saddle supports on the outer cylinder, which provides great support for the interlayer low-temperature storage tank and improves the safety of the interlayer low-temperature storage tank during transportation; The interlayer is filled with pearlescent sand, and the heat insulation method adopts powder vacuum technology, which has good ultra-low temperature insulation performance. After the interlayer is vacuumed, it can achieve the effect of heat insulation. The interlayer low-temperature storage tank has good low-temperature insulation effect and strong support strength Good quality, easy to use, high loading rate, safe and reliable, high purity of stored gas, high vacuum degree and long vacuum life, etc. It is mainly used to store low-temperature liquids such as liquid oxygen, liquid nitrogen, and liquid argon.

It should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it still The technical solutions described in the foregoing embodiments may be modified, or some of the technical features may be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and spirit of the technical solutions of the various embodiments of the present invention. scope.

Claims (8)

1. interlayer low-temperature storage tank; Comprise outer cylinder body and inner barrel; Said outer cylinder body and said inner barrel form adiabatic space; Left side envelope and outer right envelope the outside the two ends of said outer cylinder body are respectively equipped with, the upper end of said outer cylinder body is provided with the K vacuum system, and the intermediate portion in the bottom of said outer cylinder body is provided with vacuum pumping device;

It is characterized in that; Fill up pearlife in the interlayer between said outer cylinder body and the said inner barrel, the bottom of said inner barrel is provided with several saddle supports, and said saddle support extends to the outside of said outer cylinder body; Said vacuum pumping device is provided with the bottom first liquid mouth, liquid-discharging tube and liquid level liquid-phase tube; The said bottom first liquid mouth, said liquid-discharging tube and said liquid level liquid-phase tube communicate, and said liquid-discharging tube extends to the outside of said outer cylinder body, and the end of said liquid-discharging tube also connects one second pipe cap;

The right-hand member of the outer wall of said inner barrel is provided with the bottom second liquid mouth, exhaust tube, flow-off, liquid level gas phase pipe; Said exhaust tube, said flow-off and said liquid level gas phase pipe are located in the space between said inner barrel and the said outer cylinder body; The said bottom second liquid mouth extends to the outside of outer cylinder body, and the end of the said bottom second liquid mouth also connects one first pipe cap.

2. interlayer low-temperature storage tank as claimed in claim 1 is characterized in that, said saddle support is located at the two ends of said outer cylinder body bottom, and the upper end of each saddle support is provided with first splice.

3. according to claim 1 or claim 2 interlayer low-temperature storage tank is characterized in that, said saddle support adopts glass fibre reinforced plastics.

4. interlayer low-temperature storage tank as claimed in claim 1 is characterized in that the periphery of said outer cylinder body is provided with several stereospheres.

5. interlayer low-temperature storage tank as claimed in claim 4 is characterized in that, said stereosphere is the Q-235A steel.

6. interlayer low-temperature storage tank as claimed in claim 1 is characterized in that, said outer cylinder body, said outer left side envelope and said outer right envelope are the Q345R steel.

7. interlayer low-temperature storage tank as claimed in claim 1 is characterized in that, said saddle support is Q345R steel or Q-235B steel.

8. interlayer low-temperature storage tank as claimed in claim 1 is characterized in that, the thickness of said outer cylinder body is 10 mm-12mm.

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