Liquid carbon dioxide siphon liquid storage tank

Abstract

The utility model belongs to the technical field of low-temperature storage tanks, and particularly relates to a liquid carbon dioxide siphon liquid storage tank. Comprising a storage tank main body, a siphon, a pipeline supporting assembly and a blow-off pipe, the siphon is installed in the storage tank body, the pipeline supporting assembly is used for fixing the siphon, the bottom end of the siphon is installed at the bottom of the inner side of the storage tank body through the pipeline supporting assembly, and the other end of the siphon extends out of the storage tank body. And the blow-off pipe is mounted at the bottom of the outer side of the storage tank main body. In the practical application, the liquid carbon dioxide in the storage tank main body is removed from the top of the storage tank main body through the siphon, the phenomenon that impurities are brought out when the liquid carbon dioxide is extracted from the bottom of the storage tank main body is avoided, the impurities at the bottom of the storage tank main body are discharged through the blow-off pipe, and the purity of the liquid carbon dioxide in the storage tank main body is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to low temperature storage tank technical field, concretely relates to a liquid carbon dioxide siphon liquid taking storage tank. BACKGROUND

[0002] In the storage and transportation process of liquid carbon dioxide, maintaining the purity of the liquid is crucial to ensure the quality of the final product. Traditional liquid carbon dioxide storage tanks usually adopt a method of directly extracting liquid from the bottom, which may cause impurities (such as particulate matter, corrosion products, etc.) deposited at the bottom of the storage tank to be extracted together, thereby affecting the working performance of downstream equipment (such as valves, instruments, etc.), and may cause equipment damage or increase the failure rate. In addition, this approach also affects the purity of liquid carbon dioxide itself, thereby reducing product quality.

[0003] Chinese patent with publication number CN208090297U discloses a siphon type cryogenic liquid vertical storage tank system, which includes a tank body, a siphon device, an outer pipeline, several high-pressure plunger pumps and a low-temperature centrifugal pump. The tank body includes an outer container and an inner container, and a vacuum insulation layer and a interlayer pipeline are arranged between the outer container and the inner container. The bottom of the tank body is provided with a support leg, and the outer container is connected to the low-temperature centrifugal pump through the outer pipeline or connected to the high-pressure plunger pump through the siphon device. The siphon device of the above-mentioned device is arranged at the bottom of the vertical storage tank, and the liquid carbon dioxide is also discharged from the bottom of the vertical storage tank, which is easy to carry out the impurities at the bottom of the vertical storage tank, affecting the purity of the liquid carbon dioxide. Therefore, it is urgent for the technical personnel in the field to solve the above technical problems. SUMMARY

[0004] The technical problem to be solved by the utility model is that in the above-mentioned prior art, liquid carbon dioxide is discharged from the bottom of the vertical storage tank, which is easy to carry out the impurities at the bottom of the vertical storage tank, affecting the purity of the liquid carbon dioxide.

[0005] To solve the above technical problems, the utility model adopts the technical scheme of:

[0006] A liquid carbon dioxide siphon liquid taking storage tank, comprising a storage tank body, a siphon pipe, a pipeline support assembly and a blowdown pipe; the siphon pipe is installed in the storage tank body, the pipeline support assembly is installed for fixing the siphon pipe, the bottom end of the siphon pipe is installed on the inside bottom of the storage tank body through the pipeline support assembly, the other end of the siphon pipe protrudes out of the storage tank body, and the blowdown pipe is installed on the bottom outside of the storage tank body.

[0007] By adopting the above technical scheme, the liquid is taken from the top by the siphon principle, avoiding the risk of entraining sediments when directly extracting liquid from the bottom, thereby ensuring that the output liquid carbon dioxide is more pure. Clean liquid carbon dioxide can significantly reduce the possibility of damage to downstream equipment such as valves and instruments due to impurities, prolonging the service life of these critical components. Due to the reduction of impurity-induced failures, the frequency of maintenance and replacement of parts required by the enterprise is greatly reduced, thereby reducing the overall operating cost. The operation of cleaning the bottom sediments through the blowdown pipe is simple and efficient, which helps to maintain long-term stable operation of the system. The higher purity of liquid carbon dioxide can meet more stringent quality standards and is suitable for application fields with higher requirements for gas purity, such as food processing, medical industry, etc. The pipe support assembly effectively fixes the siphon tube, preventing unnecessary movement or deformation during operation, increasing the safety and reliability of the entire system. The pipe support assembly made of stainless steel not only resists corrosion but also maintains good mechanical properties in low-temperature high-pressure environments. The design of the siphon tube makes the installation process relatively simple and facilitates daily inspection and maintenance. In particular, the blowdown pipe is detachably installed at the center of the bottom of the tank, facilitating regular cleaning.

[0008] Further, the pipe support assembly includes a tank inner wall support and a tank bottom support, both of which are provided with positioning holes adapted to the siphon tube. The tank inner wall support is welded to the inner wall of the vertical side of the tank body, and the tank bottom support is welded to the bottom of the tank body.

[0009] By adopting the above technical scheme, by setting support pieces on the inner wall and bottom of the tank and opening positioning holes adapted to the siphon tube, the position of the siphon tube inside the tank can be fixed and unchanged. This helps to prevent the siphon tube from shifting due to liquid flow or external vibration, thereby ensuring the stability and reliability of the liquid taking process. The use of tank inner wall supports and bottom supports increases the structural strength of the entire system. These supports can withstand the weight and pressure generated by the siphon tube and the liquid carbon dioxide it transports, reducing the risk of pipe deformation or damage. The positioning holes on the supports make the installation of the siphon tube more convenient and quick. At the same time, when maintenance or replacement of the siphon tube is needed, this design also facilitates disassembly and reinstallation, reducing maintenance cost and time. Since the siphon tube is firmly fixed to the support pieces, unnecessary wear and stress concentration are avoided, thereby prolonging the service life of the siphon tube and the entire system.

[0010] Further, the tank inner wall support and the tank bottom support are both made of stainless steel, and the tank inner wall support is provided with two, and the tank bottom support is provided with one.

[0011] By adopting the above technical solutions, the stainless steel has excellent corrosion resistance and can remain stable in the environment of liquid carbon dioxide and possible trace impurities for a long time. This helps to prevent the support from failing due to corrosion, thereby prolonging the service life of the entire system. The stainless steel material has high mechanical strength and can withstand the pressure and weight of the siphon pipe and its internal liquid, ensuring that the support will not deform or be damaged due to external pressure or internal stress. Liquid carbon dioxide is usually stored at low temperatures (about -78.5℃), and stainless steel can still maintain good mechanical properties in such low-temperature environments and is not prone to brittle fracture or other forms of damage. The smooth surface of stainless steel is not prone to dirt accumulation, making it easy to clean regularly. At the same time, the durability of this material also reduces the need for frequent replacement of parts, reducing maintenance costs.

[0012] Further, the siphon pipe is made of rubber hose, and a connecting sleeve is arranged at the connection between the siphon pipe and the pipe support assembly, the connecting sleeve is sleeved in the positioning hole, and the siphon pipe is sleeved in the pipe support assembly through the connecting sleeve.

[0013] By adopting the above technical solutions, the rubber hose has good flexibility and can adapt to temperature changes and pressure fluctuations inside the tank, reducing stress concentration caused by thermal expansion and contraction. This helps to prevent pipe rupture or damage. The connecting sleeve is used to fix the siphon pipe in the positioning hole, which can provide a tighter sealing effect and reduce the risk of leakage. This is very important for maintaining the safety of the system and the cleanliness of the operating environment. The design of the connecting sleeve makes the installation of the siphon pipe more convenient and fast. Simply insert the siphon pipe into the connecting sleeve, then sleeve the connecting sleeve in the positioning hole of the support, and the installation is completed. This design also facilitates disassembly and reinstallation, reducing maintenance costs and time. The rubber material has a certain elasticity and can absorb vibrations and impacts to a certain extent, reducing the impact on the siphon pipe and its connection, and improving the stability of the system.

[0014] Further, the drain pipe is made of polytetrafluoroethylene, and the drain pipe is detachably installed at the bottom center of the tank body.

[0015] By adopting the above technical scheme, PTFE is a highly chemical-resistant material that is hardly affected by most chemicals. This makes it very suitable for handling liquid carbon dioxide and its possible impurities, ensuring that the drain pipe is not damaged by chemical reactions. PTFE can maintain good mechanical properties at very low temperatures, making it suitable for the low-temperature environment required for liquid carbon dioxide storage (approximately -78.5°C). At the same time, it can also withstand high temperatures, providing a wide range of working temperature. PTFE has a very low friction coefficient, which means that impurities and deposits can be more easily discharged through the drain pipe, reducing the risk of blockage. In addition, this feature also makes the cleaning process more simple and efficient. Due to the non-stick properties of PTFE, dirt and other impurities are less likely to adhere to its surface, helping to keep the inside of the pipe clean and reducing the frequency of maintenance. The smooth surface of the PTFE material drain pipe makes it easy to clean regularly. The detachable design allows the drain pipe to be easily removed for thorough cleaning or replacement, reducing maintenance costs and time.

[0016] The utility model has the advantages of:

[0017] 1. The utility model takes liquid from the top by using the siphon principle, avoiding the risk of entraining deposits when directly extracting liquid from the bottom, thereby ensuring that the output liquid carbon dioxide is more pure. Clean liquid carbon dioxide significantly reduces the possibility of damage to downstream equipment such as valves and instruments due to impurities, prolonging the service life of these key components and reducing failures caused by impurities. The frequency of maintenance and replacement of parts required by enterprises is greatly reduced, thereby reducing overall operating costs.

[0018] 2. The utility model uses a pipeline support assembly (including an inner wall support and a bottom support) made of stainless steel and fixed on the tank body by welding, increasing the structural strength of the entire system and ensuring that the siphon tube remains in a fixed position inside the tank, preventing displacement due to liquid flow or external vibration, which helps to ensure the stability and reliability of the liquid extraction process and reduces the risk of pipe deformation or damage.

[0019] 3. The siphon tube is made of rubber hose and connected to the pipeline support assembly through a connecting sleeve, making the installation process simple and quick. The design of the connecting sleeve facilitates disassembly and reinstallation, reducing maintenance costs and time. The drain pipe is made of polytetrafluoroethylene (PTFE) material and is detachably installed at the center of the tank bottom, making it easy to clean regularly. The non-stick properties and low friction coefficient of PTFE make it difficult for dirt and other impurities to adhere, making it easy to clean, further improving the maintenance efficiency of the system and the stability of long-term operation. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1The whole structure schematic view of the utility model is shown in the figure.

[0021] Figure 2 The internal structure schematic view of the utility model is shown in the figure.

[0022] Figure 3 The utility model discloses Figure 2 The enlarged schematic view of A part in the middle.

[0023] Wherein, 1 - the storage tank main part;2 - pipeline support subassembly;21 - storage tank inner wall support piece;22 - storage tank bottom support piece;23 - positioning hole;24 - connecting sleeve;3 - siphon pipe;4 - blow-off pipe. Specific implementation

[0024] The utility model will be further explained in detail in combination with the drawings and specific preferable implementation.

[0025] In the description of the utility model, it is understood that the orientation or position relation indicated by the terms "left side", "right side", "upper part", "lower part" and the like is the orientation or position relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and "first", "second" and the like do not represent the importance of the parts, so it can not be understood as the limitation of the utility model. The specific size adopted in the embodiment is only for illustrating the technical scheme, and does not limit the protection scope of the utility model.

[0026] As Figure 1 , Figure 2 and Figure 3As shown, a liquid carbon dioxide siphon liquid storage tank, the tank body 1 is the basic structure of the whole device, used for storing liquid carbon dioxide, which is internally mounted with a siphon pipe 3, and a blowdown pipe 4 is installed on the outside of the bottom. The siphon pipe 3 is installed in the tank body 1, the bottom end is fixed on the bottom of the inside of the tank body through the pipe support assembly 2, the other end is out of the tank body, used for pumping liquid carbon dioxide from the top; The siphon pipe is made of rubber hose to provide flexibility and adaptability, and a connecting sleeve 24 is provided at the connection of the siphon pipe and the pipe support assembly 2, which is sleeved in the positioning hole 23 to ensure that the siphon pipe is stably fixed on the support. The pipe support assembly 2 includes two parts: a tank inner wall support 21 and a tank bottom support 22, wherein the tank inner wall support 21 is welded on the inner wall of the vertical side of the tank body 1, and two are provided, and the tank bottom support 22 is welded on the bottom of the tank body 1, The positioning hole 23 matched with the siphon pipe 3 is formed on the support for fixing the position of the siphon pipe, the support is made of stainless steel, which has good corrosion resistance and mechanical strength, and can keep stable in low temperature and high pressure environment. The connecting sleeve 24 is sleeved in the positioning hole 23 for fixing the siphon pipe 3 on the pipe support assembly 2, which makes the installation and disassembly of the siphon pipe more convenient and fast. The blowdown pipe 4 is installed at the bottom center of the outside of the tank body 1, which is made of polytetrafluoroethylene PTFE, has excellent chemical stability and wide working temperature range, and is designed as a detachable type, which is convenient for regular cleaning of bottom sediments. This design not only improves the purity of liquid carbon dioxide, but also enhances the structural strength and operation convenience of the system.

[0027] Working principle: the siphon 3 works by siphon principle, when the liquid carbon dioxide in the tank body 1 needs to be taken out, open the negative pressure environment at the top of the siphon 3, the liquid carbon dioxide rises from the bottom of the tank body 1 under the action of atmospheric pressure and is extracted through the siphon 3, one end of the siphon 3 is near the top of the tank body 1, the other end is close to but not in contact with the bottom of the tank body 1, avoiding the risk of entraining sediments when directly extracting liquid from the bottom, thereby ensuring that the output liquid carbon dioxide is more pure, the liquid carbon dioxide is extracted from the top through the siphon 3 and can be transported to the required use position through the connected pipeline, the drain pipe 4 is installed at the bottom center outside the tank body 1, used for periodic discharge of impurities and sediments accumulated at the bottom of the tank, when it is necessary to drain, the operator can open the valve on the drain pipe 4, so that the impurities at the bottom of the tank are discharged through the drain pipe, since the drain pipe 4 is made of polytetrafluoroethylene, which has excellent chemical stability and wide working temperature range, it can effectively resist liquid carbon dioxide and its possible trace impurities, ensuring the reliability of long-term use, the drain pipe 4 is designed to be detachable, facilitating regular cleaning and maintenance, the operator can easily detach the drain pipe for thorough cleaning or replacement, to maintain the cleanliness and efficient operation of the system, the pipeline support assembly 2 includes two parts, two tank inner wall supports 21 and a tank bottom support 22, positioning holes 23 adapted to the siphon 3 are formed on the tank inner wall support 21 and the tank bottom support 22 for fixing the position of the siphon 3, the tank inner wall support 21 is welded on the inner wall of the vertical side of the tank body 1, two are provided, the tank bottom support 22 is welded on the bottom of the tank body 1, also provided with positioning holes 23 for fixing the bottom end of the siphon 3, the connecting sleeve 24 is sleeved in the positioning hole 23 for fixing the siphon 3 on the pipeline support assembly 2, ensuring the stability of the siphon 3, also making the installation and removal of the siphon more convenient and fast, the support assembly 2 is made of stainless steel, which has good corrosion resistance and mechanical strength, can remain stable in low temperature and high pressure environment, helps to prevent the support assembly 2 from failing due to corrosion, prolonging the service life of the entire device.

[0028] The preferred embodiments of the present application are described in detail above, but the present application is not limited to the specific details in the above embodiments, within the technical concept of the present application, the technical solutions of the present application can be variously equivalent, and these equivalent changes all belong to the protection scope of the present application.

Claims

1. A liquid carbon dioxide siphon draw tank characterized by: The utility model provides a kind of sewage tank, including storage tank body (1), siphon (3), pipeline support assembly (2) and drain pipe (4);The siphon (3) is installed in the storage tank body (1), the pipeline support assembly (2) is installed for fixing the siphon (3), the bottom end of the siphon (3) is installed in the bottom of the inside of the storage tank body (1) by the pipeline support assembly (2), another end of the siphon (3) protrudes the storage tank body (1), the drain pipe (4) is installed in the bottom of the outside of the storage tank body (1);The pipeline support assembly (2) includes storage tank inner wall support piece (21) and storage tank bottom support piece (22), the positioning hole (23) that is compatible with the siphon (3) is formed in the storage tank inner wall support piece (21) and the storage tank bottom support piece (22) both, the storage tank inner wall support piece (21) is welded on the inner wall of vertical side of the storage tank body (1), and the storage tank bottom support piece (22) is welded on the bottom of the storage tank body (1).

2. The liquid carbon dioxide siphon draw tank of claim 1, wherein: The storage tank inner wall support piece (21) and the storage tank bottom support piece (22) are both made of stainless steel, the storage tank inner wall support piece (21) is provided with two, and the storage tank bottom support piece (22) is provided with one.

3. The liquid carbon dioxide siphon draw tank of claim 2, wherein: The siphon (3) is made of rubber hose, the connecting sleeve (24) is arranged at the connecting position of the siphon (3) and the pipeline support assembly (2), the connecting sleeve (24) is sleeved in the positioning hole (23), and the siphon (3) is sleeved in the pipeline support assembly (2) through the connecting sleeve (24).

4. The liquid carbon dioxide siphon draw tank of claim 1, wherein: The drain pipe (4) is made of polytetrafluoroethylene, and the drain pipe (4) is detachably installed at the bottom center of the storage tank body (1).

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