CN219243313U

CN219243313U - Low-temperature liquid storage tank with self-pressurization device

Info

Publication number: CN219243313U
Application number: CN202223413859.4U
Authority: CN
Inventors: 陈洪卫; 杨文辉; 汉正霞; 朱夏琴
Original assignee: HANGZHOU CHUANKONG GENERAL EQUIPMENT CO LTD
Current assignee: HANGZHOU CHUANKONG GENERAL EQUIPMENT CO LTD
Priority date: 2022-12-20
Filing date: 2022-12-20
Publication date: 2023-06-23
Anticipated expiration: 2032-12-20

Abstract

The utility model discloses a low-temperature liquid storage tank with a self-pressurization device, which comprises an outer cylinder, an inner cylinder and a skirt; the inner cylinder is connected with a liquid inlet assembly, a self-pressurization device and a measurement and control assembly; the liquid inlet assembly comprises an upper liquid inlet pipe connected with the top of the inner cylinder, a lower liquid inlet pipe connected with the bottom of the inner cylinder and a communicating pipe for collecting the upper liquid inlet pipe and the lower liquid inlet pipe; the communication structure comprises an external pipeline connected with the communication pipe and a metal hose used for connecting the external pipeline with the external tank wagon. The method for providing the double-channel liquid inlet component and the self-pressurization device arranged outside the double-channel liquid inlet component is beneficial to reducing the overall height of a storage tank and uniformly distributing liquid under the condition of larger liquid inlet quantity requirement, reduces liquid inlet time and improves production efficiency.

Description

Low-temperature liquid storage tank with self-pressurization device

Technical Field

The utility model relates to the technical field of low-temperature liquid storage tanks, in particular to a low-temperature liquid storage tank with a self-pressurization device.

Background

The low-temperature liquid storage tank is a main storage device in the production, storage and transportation processes of low-temperature liquid, and is generally of a double-layer round simple structure, the inner cylinder and the piping are both made of austenitic stainless steel, the outer cylinder is made of low-alloy steel materials, the interlayer is generally provided with a heat insulation material, and a pressure gauge and a liquid level gauge are arranged on the interlayer for observing the pressure liquid level in the tank.

The self-pressurizing device of the low-temperature liquid storage tank in the prior art is generally designed to be attached to the lower part of the lower end socket of the low-temperature container shell, and the designed medium is generally used for low-temperature liquid gasification of liquid oxygen, liquid nitrogen, liquid argon and other mediums. However, when the self-pressurization requirement is met under the condition that the requirement of large gas is needed, the whole volume is overlarge, and when a user has finer content requirements on components of a medium, for example, the gas components given by the user mainly comprise krypton-poor liquid, xenon-poor liquid, liquid oxygen and the like according to different components, and the density of the gas components is different from that of single liquid, so that the design requirement of the gas components is different from that of other low-temperature liquids, and according to the design requirement of a low-temperature storage tank of the user, the effective volume of the storage tank body is large, the diameter and the height are higher, so that the requirement of conveying the liquid to the inside is large, the conveying duration is longer, and the production efficiency is reduced.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a double-channel liquid inlet component and a method for arranging an external self-pressurization device, so that the self-pressurization requirement under the condition of larger gas requirement is met, the integral height of a storage tank is reduced, liquid is uniformly distributed under the condition of larger liquid inlet requirement, the liquid inlet time is reduced, and the production efficiency is improved.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

the low-temperature liquid storage tank with the self-pressurization device comprises an outer cylinder, an inner cylinder matched with the outer cylinder and a skirt seat arranged at the bottom of the outer cylinder; the inner cylinder is connected with a liquid inlet component which is connected with an external tank car through a communication structure; the self-pressurization device is arranged outside the skirt through a pipeline; the measurement and control assembly is connected with the inner cylinder through an upper pressure guiding pipe and a lower pressure guiding pipe; the liquid inlet assembly comprises an upper liquid inlet pipe connected with the top of the inner cylinder, a lower liquid inlet pipe connected with the bottom of the inner cylinder and a communicating pipe for collecting the upper liquid inlet pipe and the lower liquid inlet pipe; the communication structure comprises an external pipeline connected with the communication pipe and a metal hose used for connecting the external pipeline with the external tank wagon. The self-pressurization device is arranged outside, so that the overall height can be effectively reduced, and the self-pressurization device can be freely installed outside and is convenient to use; the liquid inlet assembly can uniformly distribute liquid through the arrangement of the upper liquid inlet pipe and the lower liquid inlet pipe, and the liquid is split through the communicating pipe after being connected with the communicating structure through the external tank wagon, so that the liquid inlet efficiency can be improved; through the arrangement of the measurement and control assembly, the liquid level can be effectively detected, and the change of the liquid level of the storage tank can be effectively controlled; through above-mentioned metal collapsible tube's setting, can conveniently connect, convenient feed liquor operation, simple to use.

Further, the measurement and control assembly comprises a pressure gauge, a pressure transmitter, a liquid level transmitter and a liquid level gauge, wherein the pressure gauge, the pressure transmitter and the liquid level transmitter are arranged on the upper pressure guiding pipe and are connected through a remote root valve, and the liquid level gauge is connected through a combination instrument valve. The pressure transmitter and the liquid level transmitter can remotely transmit data, liquid level and pressure are conveniently monitored in real time, and the internal state can be effectively reflected through the arrangement of the pressure gauge and the liquid level gauge, so that the stability and safety of a storage tank are ensured.

Further, a blowing valve and a one-way valve matched with the blowing valve are arranged on the lower pressure guiding pipe; and a residual liquid discharge valve matched with the blowing-off valve is arranged on the communicating pipe. Can carry out inside cleanness through nitrogen purging, discharge through above-mentioned raffinate discharge valve, simple structure sets up rationally.

Further, the self-pressurization device is provided with an inner cylinder safety valve and a manual emptying valve through a tee joint. The safety of the storage tank can be ensured, and when the safety valve of the inner cylinder with overlarge pressure fails, the safety valve can be sent to the manual emptying valve for deflation, so that the stability and safety of the inside are ensured.

Further, a vacuum pumping structure is arranged between the inner cylinder and the outer cylinder. Can effectively insulate heat and ensure the temperature stability of the storage tank.

Further, a heat insulating material is arranged between the outer cylinder and the inner cylinder. Can effectively insulate heat and ensure the temperature stability of the storage tank.

Compared with the prior art, the utility model has the advantages that: the self-pressurization requirement under the condition of larger gas requirement is met, the integral height of the storage tank is reduced, liquid is uniformly distributed under the condition of larger liquid inlet requirement, the liquid inlet time is reduced, and the production efficiency is improved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model.

Fig. 2 is a bottom view of fig. 1.

Fig. 3 is a schematic diagram of the principle of the present utility model.

In the figure:

1. an outer cylinder; 2. an inner cylinder; 3. a skirt; 4. a liquid inlet component; 5. a self-pressurizing device; 6. a measurement and control assembly; 7. an upper pressure guiding pipe; 8. a lower pressure guiding pipe; 9. an upper liquid inlet pipe; 10. a lower liquid inlet pipe; 11. a communicating pipe; 12. an external pipeline; 13. a metal hose; 14. a remote root valve; 15. a pressure gauge; 16. a pressure transmitter; 17. a liquid level transmitter; 18. a combination meter valve; 19. a liquid level gauge; 20. a blow-off valve; 21. a one-way valve; 22. a raffinate discharge valve; 23. a tee joint; 24. a manual purge valve; 25. a vacuum pumping structure; 26. a heat insulating material.

Detailed Description

Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Referring to fig. 1, 2 and 3, in this embodiment of a low temperature liquid storage tank with a self-pressurizing device 5 according to the present utility model, the storage tank includes an inner cylinder 2 and an outer cylinder 1 adapted to the inner cylinder 2, a skirt 3 is disposed at the bottom of the outer cylinder 1, a liquid inlet assembly 4 is disposed on the inner cylinder 2, the liquid inlet assembly 4 is connected with an external tank car through a communication structure, and the self-pressurizing device 5 is connected with the outside of the skirt 3 through a pipeline, the self-pressurizing device 5 is disposed outside, which is beneficial to control of the whole volume, and is convenient to install and use; the inner cylinder 2 is also connected with a measurement and control assembly 6 through an upper pressure guiding pipe 7 and a lower pressure guiding pipe 8, and in the embodiment, the liquid inlet assembly 4 comprises an upper liquid inlet pipe 9 connected with the top of the inner cylinder 2, a lower liquid inlet pipe 10 connected with the bottom of the inner cylinder 2 and a communicating pipe 11 for collecting the upper liquid inlet pipe 9 and the lower liquid inlet pipe 10; the communication structure includes an external pipe 12 connected to the communication pipe 11 and a metal hose 13 for connecting the external pipe 12 to the external tank car. The self-pressurization device 5 is arranged outside, so that the overall height can be effectively reduced, and the self-pressurization device can be freely arranged outside and is convenient to use; the liquid inlet assembly 4 can uniformly distribute liquid through the arrangement of the upper liquid inlet pipe 9 and the lower liquid inlet pipe 10, and the liquid is split through the communicating pipe 11 after being connected with the communicating structure through the external tank wagon, so that the liquid inlet efficiency can be improved; through the arrangement of the measurement and control assembly 6, the liquid level can be effectively detected, and the change of the liquid level of the storage tank can be effectively controlled; through the arrangement of the metal hose 13, the connection can be facilitated, the liquid inlet operation is facilitated, and the use is simple.

Referring to fig. 1, 2 and 3, in the embodiment of the utility model, the basic part is identical to the above embodiment, and will not be described here again. In this embodiment, the measurement and control assembly 6 includes a pressure gauge 15, a pressure transmitter 16, a liquid level transmitter 17 and a liquid level gauge 19, which are disposed on the upper pressure guiding pipe 7 and connected through a remote root valve 14, and a combination meter valve 18, where the pressure transmitter 16 and the liquid level transmitter 17 can remotely transmit data, so as to monitor liquid level and pressure in real time, and by setting the pressure gauge 15 and the liquid level gauge 19, internal states can be effectively reflected, and stability and safety of a storage tank are ensured; the lower pressure guiding pipe 8 is provided with a blowing valve 20 and a one-way valve 21 matched with the blowing valve 20, the communicating pipe 11 is provided with a residual liquid discharge valve 22 matched with the blowing valve 20, the inside of the pipe can be cleaned by nitrogen purging, and the pipe is discharged through the residual liquid discharge valve 22, so that the structure is simple and the arrangement is reasonable; in this embodiment, the self-pressurization device 5 is provided with the inner cylinder 2 safety valve and the manual emptying valve 24 through a tee joint 23, so that the safety of the storage tank can be ensured, the manual emptying valve 24 is mainly used for starting the emptying and deflation of the storage tank, and when the safety valve of the inner cylinder 2 with the excessive storage tank operating pressure fails, the manual emptying valve 24 can be used for deflating, so that the stability and safety of the inside can be ensured; meanwhile, a vacuumizing structure 25 is arranged between the inner cylinder 2 and the outer cylinder 1, and a heat insulating material 26 is arranged between the outer cylinder 1 and the inner cylinder 2, so that heat insulation can be effectively carried out, and the temperature stability of a storage tank is ensured.

The above embodiments are merely illustrative embodiments of the present utility model, but the technical features of the present utility model are not limited thereto, and any changes or modifications made by those skilled in the art within the scope of the present utility model are included in the scope of the present utility model.

Claims

1. The low-temperature liquid storage tank with the self-pressurization device comprises an outer cylinder, an inner cylinder matched with the outer cylinder and a skirt seat arranged at the bottom of the outer cylinder; the method is characterized in that: the inner cylinder is connected with

The liquid inlet assembly is connected with the external tank car through a communication structure;

the self-pressurization device is arranged outside the skirt through a pipeline;

the measurement and control assembly is connected with the inner cylinder through an upper pressure guiding pipe and a lower pressure guiding pipe;

the liquid inlet assembly comprises an upper liquid inlet pipe connected with the top of the inner cylinder, a lower liquid inlet pipe connected with the bottom of the inner cylinder and a communicating pipe for collecting the upper liquid inlet pipe and the lower liquid inlet pipe; the communication structure comprises an external pipeline connected with the communication pipe and a metal hose used for connecting the external pipeline with the external tank wagon.

2. The cryogenic liquid storage tank with self-pressurizing device of claim 1, wherein: the measurement and control assembly comprises a pressure gauge, a pressure transmitter, a liquid level transmitter and a liquid level gauge, wherein the pressure gauge, the pressure transmitter and the liquid level transmitter are arranged on the upper pressure guiding pipe and are connected through a remote root valve, and the liquid level gauge is connected through a combination instrument valve.

3. A cryogenic liquid storage tank with self-pressurizing means according to claim 1 or 2, characterized in that: a blowing-off valve and a one-way valve matched with the blowing-off valve are arranged on the lower pressure guiding pipe; and a residual liquid discharge valve matched with the blowing-off valve is arranged on the communicating pipe.

4. A cryogenic liquid storage tank with self-pressurizing means according to claim 1 or 2, characterized in that: the self-pressurization device is provided with an inner cylinder safety valve and a manual emptying valve through a tee joint.

5. A cryogenic liquid sump with self-pressurizing means as claimed in claim 3, wherein: the self-pressurization device is provided with an inner cylinder safety valve and a manual emptying valve through a tee joint.

6. A cryogenic liquid storage tank with self-pressurizing means according to claim 1 or 2, characterized in that: a vacuumizing structure is arranged between the inner cylinder and the outer cylinder.

7. A cryogenic liquid sump with self-pressurizing means as claimed in claim 3, wherein: a vacuumizing structure is arranged between the inner cylinder and the outer cylinder.

8. The cryogenic liquid tank with self-pressurizing device of claim 4, wherein: a vacuumizing structure is arranged between the inner cylinder and the outer cylinder.

9. A cryogenic liquid storage tank with self-pressurizing means according to claim 1 or 2, characterized in that: and a heat insulating material is arranged between the outer cylinder and the inner cylinder.

10. A cryogenic liquid sump with self-pressurizing means as claimed in claim 3, wherein: and a heat insulating material is arranged between the outer cylinder and the inner cylinder.