Vacuum tube with multi-layer structure
By designing a multi-layer structure in a vacuum tube, the internal pipe, outer pipe and tee pipe are used to realize the transportation of two media, and the insulation and heat exchange functions are provided through the vacuum sealing chamber, the long-distance transportation costs of various fluids in the chemical industry are solved. The problems of high and poor insulation effect achieve cost saving and optimized insulation effect.
Patent Information
- Application Number
- CN202421096362.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-05-20
AI Technical Summary
In the chemical industry, when multiple fluids are transported for a long distance, existing vacuum tubes require multiple vacuum tubes, resulting in increased manufacturing and laying costs and difficulty in effective insulation and heat exchange.
Design a multi-layer structure vacuum tube, forming a medium flow chamber and a vacuum sealing chamber between the inner and outer tubes, and using a tee tube and a sleeve to achieve the same or reverse transport of the two media, and providing insulation through the vacuum sealing chamber and heat exchange function.
The two original vacuum tubes are combined into one, reducing costs, and providing thermal insulation and heat exchange functions that are better than other pipes during long-distance transportation.
Smart Images
Figure CN222316343U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to a vacuum tube, and in particular to a vacuum tube with a multi-layer structure. Background Art
[0002] With the continuous development of my country's chemical industry, the use of vacuum tubes in medium transportation has been everywhere. The vacuum tube uses a structure that adds a layer of pipe to the outer layer of the stainless steel pipe to form a vacuum layer between the pipe and the stainless steel pipe to reduce the frequency of molecular heat exchange. In this way, whether it is the transportation of low-temperature or high-temperature media, the vacuum tube can achieve the insulation effect on the medium transmitted in the stainless steel pipe. Therefore, the vacuum tube has superior performance that other pipeline insulation methods cannot achieve.
[0003] At present, vacuum tubes are often used in the transportation of liquid nitrogen, liquid oxygen, liquid argon, LNG, liquid ammonia and other fluids. Since the demand for the above fluids in the chemical industry is not limited to one type, a corresponding number of vacuum tubes are generally used for transportation according to the number of types of fluids required. However, when multiple fluids are transported over long distances, each fluid requires a vacuum tube of a corresponding length for transportation, which undoubtedly increases the cost of manufacturing and laying vacuum tubes. Summary of the invention
[0004] The purpose of the utility model is to provide a multi-layer structure vacuum tube to solve the problems raised in the above background technology.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] A multi-layer vacuum tube, comprising:
[0007] The medium conveying pipeline comprises an inner tube and an outer tube; the outer tube is matched and sleeved on the outer wall of the inner tube;
[0008] The inner tube is used for conveying the first medium;
[0009] The outer tube is sealedly connected to the inner tube at both ends; a medium flow cavity is formed between the outer tube and the inner tube for conveying the second medium; and medium pipelines are connected to the two ends of the outer tube;
[0010] The sleeve is sleeved on the medium conveying pipeline; the sleeve is sealedly connected to the inner tube and the medium conveying pipeline respectively; a vacuum sealing cavity is formed between the sleeve and the medium conveying pipeline.
[0011] Furthermore, the outer tube also includes a tee; two tee tubes are provided; one end of each tee tube is connected to the outer tube, and the other end is sealedly connected to the inner tube; the outer tube connected with the tee tube and the inner tube form the medium flow cavity.
[0012] Furthermore, the three-way pipe is sealed and connected to the inner pipe through an inner pipe sealing plate.
[0013] Furthermore, the medium pipeline is matched and connected to the side wall of each of the three-way pipes; the medium pipeline includes a first pipeline and a second pipeline; the first pipeline is on the same side as the medium inflow end of the inner tube; the second pipeline is on the same side as the medium outflow end of the inner tube.
[0014] Furthermore, the second medium flows from the first pipe into the outer pipe and then flows out from the second pipe, or flows from the second pipe into the outer pipe and then flows out from the first pipe.
[0015] Furthermore, the medium pipeline is formed by connecting a horizontal pipe, an elbow pipe and a lead-out pipe;
[0016] The transverse tube is vertically connected to the outer tube;
[0017] The elbow pipe has one end connected to the horizontal pipe;
[0018] One end of the outlet pipe is connected to the other end of the elbow pipe, and the other end is connected to a pipeline flange; the outlet pipe is arranged parallel to the inner pipe.
[0019] Furthermore, the casing is sealedly connected to the inner pipe and the medium pipeline respectively through a casing sealing plate.
[0020] Furthermore, both ends of the inner pipe are respectively connected to a pipe flange.
[0021] Compared with the prior art, the beneficial effects of the utility model are:
[0022] (1) The present application combines the two vacuum pipes originally required for transportation into one. This not only saves the cost of making and laying two vacuum pipes separately for long-distance transportation of two media, but also uses a multi-layer vacuum pipe to transport two media, which has a better thermal insulation effect than other pipes.
[0023] (2) When the temperature difference between the two transported media is large and the transport distance of the medium transport pipeline is long, the vacuum tube of this structure can be used as a heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0025] Figure 1 This is a schematic diagram of the structure of a multi-layer vacuum tube according to an embodiment of the present application.
[0026] Reference numerals:
[0027] 1. Inner tube; 1a. Inlet of the inner tube for medium to flow into;
[0028] 20. Outer pipe body; 21. Tee pipe; 22. Inner pipe sealing plate; 230. Horizontal pipe; 231. Elbow pipe; 232. Outlet pipe; 24. Second pipe;
[0029] 3. Casing; 30. Casing sealing plate;
[0030] 4. Pipe flange. DETAILED DESCRIPTION
[0031] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.
[0032] In the description of the present invention, it should be understood that the terms "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships conventionally placed when the product of the utility model is used, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0034] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0035] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0036] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numerals in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments discussed.
[0037] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.
[0038] The utility model embodiment provides a multi-layer structure vacuum tube, please refer to Figure 1 The multi-layer vacuum tube includes a medium delivery pipeline and a sleeve 3.
[0039] The medium conveying pipeline includes an inner tube 1 and an outer tube. The outer tube is matched and sleeved on the outer wall of the inner tube 1. The inner tube 1 is used for conveying a first medium. Both ends of the outer tube are respectively connected to the inner tube 1 in a sealed manner. A medium flow cavity is formed between the outer tube and the inner tube 1 for conveying a second medium. Both ends of the outer tube are respectively connected to medium pipelines.
[0040] The sleeve 3 is sleeved on the medium conveying pipeline. The sleeve 3 is sealedly connected to the inner tube 1 and the medium conveying pipeline respectively. A vacuum sealing cavity is formed between the sleeve 3 and the medium conveying pipeline.
[0041] The multi-layer vacuum tube is sleeved on the outer side of the inner tube 1 through the outer tube, so that the first medium is transmitted in the inner tube 1 and the second medium is transmitted in the medium flow cavity. At the same time, the sleeve 3 is sleeved on the outer side of the medium transmission pipeline to form a vacuum sealing cavity to insulate the two media transmitted by the medium transmission pipeline.
[0042] Specifically,
[0043] The medium conveying pipeline comprises an inner pipe 1 and an outer pipe. The outer pipe is sleeved on the outer wall of the inner pipe 1.
[0044] The inner tube 1 can be used for conveying a first medium. The first medium can be other fluids such as liquid nitrogen, liquid oxygen, liquid argon, LNG, liquid ammonia, etc. Both ends of the inner tube 1 are connected with a pipeline flange 4 respectively.
[0045] The outer tube is shorter than the inner tube 1. The outer tube comprises an outer tube body 20, a tee tube 21 and a medium pipeline.
[0046] The outer tube body 20 can be used to transport a second medium, which can be other fluids such as liquid nitrogen, liquid oxygen, liquid argon, LNG, liquid ammonia, gas-liquid mixture, etc. The outer tube body 20 is sleeved on the outer wall of the inner tube 1 .
[0047] There are two tee pipes 21. One end of the two tee pipes 21 is connected to the two ends of the outer pipe body 20 respectively, so that the tee pipes 21 are also sleeved on the outer wall of the inner pipe 1. The other end of each tee pipe 21 is sealedly connected to the inner pipe 1 through the inner pipe sealing plate 22, so that the outer pipe body 20 connected with the tee pipe 21 and the inner pipe 1 form a closed medium flow cavity.
[0048] The medium pipeline is used for input or output of the second medium. The medium pipeline is matched and connected to the side wall of each tee pipe 21. The medium pipeline on the same side as the inlet medium port 1a of the inner pipe is recorded as the "first pipeline"; the medium pipeline on the same side as the outlet medium port of the inner pipe 1 is recorded as the "second pipeline 24". The second medium can flow into the outer pipe body 20 from the first pipeline and then flow out from the second pipeline 24 to be transported in the same direction as the first medium; it can also flow into the outer pipe body from the second pipeline 24 and then flow out from the first pipeline to be transported in the opposite direction to the first medium. The above-mentioned medium pipeline is connected by a horizontal pipe 230, an elbow pipe 231 and an outlet pipe 232. Among them, the horizontal pipe 230 is vertically connected to the tee pipe 21. One end of the elbow pipe 231 is connected to the horizontal pipe 230, and the other end thereof is connected to the outlet pipe 232. The outlet pipe 232 is arranged parallel to the inner pipe 1. The outlet pipe 232 is connected to a pipeline flange 4.
[0049] When the first medium flows into the inner tube 1, the second medium is input through the medium pipeline and then flows to the outer tube body 20, and then flows out through the medium pipeline. Depending on whether the second medium is first input through the first pipeline or first input through the second pipeline 24, the second medium and the first medium are respectively transported in the same direction or in the opposite direction in the medium transport pipeline.
[0050] The casing 3 is sleeved on the medium conveying pipeline. The casing 3 is sealedly connected to the inner tube 1 and the medium conveying pipeline through the casing sealing plate 30, so that a sealed cavity can be formed between the casing 3 and the medium conveying pipeline. The sealed cavity is evacuated to achieve a vacuum condition between the casing 3 and the medium conveying pipeline, so as to play a role in heat preservation of the medium conveying pipeline.
[0051] The multi-layer structure vacuum tube is sleeved on the outside of the inner tube 1 through the outer tube, and the inner layer pipeline sealing plate 22 is used to seal the outer tube to the outer wall of the inner tube 1, so that the first medium is transmitted in the inner tube 1 and the second medium is transmitted in the medium flow cavity. At the same time, the sleeve 3 is sleeved on the outside of the medium conveying pipeline, and the sleeve sealing plate 22 is used to seal the sleeve 3 to the medium conveying pipeline, so that a vacuum sealing cavity is formed between the sleeve 3 and the medium conveying pipeline, thereby insulating the two media conveyed by the medium conveying pipeline. The two vacuum pipelines required for the original transportation are combined into one, which reduces the manufacturing cost of the vacuum pipeline, which is particularly beneficial for the vacuum pipeline required for long-distance transportation.
[0052] The multi-layer vacuum tube of this embodiment is not limited to the insulation effect of the medium conveying pipeline, and the specific working mode is as follows:
[0053] When the first medium flows into the inner tube 1:
[0054] When the temperature of the second medium is close to that of the first medium, the second medium can flow from the first pipe into the outer tube body 20 so that the two medium fluids are transported in the same direction, or flow from the second pipe 24 into the outer tube body 20 so that the two medium fluids are transported in the opposite direction. The vacuum condition of the sealed cavity keeps the fluid transported in the medium transport pipe warm.
[0055] When the temperature of the second medium differs greatly from that of the first medium and the transport distance of the medium transport pipeline is long, the second medium flows from the first pipeline into the outer tube body 20 or from the second pipeline 24 into the outer tube body 20 to achieve heat exchange between the fluids.
[0056] Based on the above embodiments, the advantages of this application are as follows:
[0057] (1) The present application combines the two vacuum pipes originally required for transportation into one. This not only saves the cost of making and laying two vacuum pipes separately for long-distance transportation of two media, but also uses a multi-layer vacuum pipe to transport two media with better insulation effect than other pipes.
[0058] (2) When the temperature difference between the two transported media is large and the transport distance of the medium transport pipeline is long, the vacuum tube of this structure can be used as a heat exchanger.
Claims
1. A multi-layer vacuum tube, characterized in that: The multi-layer structure vacuum tube comprises: The medium conveying pipeline comprises an inner tube and an outer tube; the outer tube is matched and sleeved on the outer wall of the inner tube; The inner tube is used for conveying the first medium; The outer tube is sealedly connected to the inner tube at both ends; a medium flow cavity is formed between the outer tube and the inner tube for conveying the second medium; and medium pipelines are connected to the two ends of the outer tube; The sleeve is sleeved on the medium conveying pipeline; the sleeve is sealedly connected to the inner tube and the medium conveying pipeline respectively; a vacuum sealing cavity is formed between the sleeve and the medium conveying pipeline.
2. The multi-layer vacuum tube according to claim 1, characterized in that: The outer tube also includes a three-way tube; two of them are provided; one end of each three-way tube is connected to the outer tube, and the other end is sealedly connected to the inner tube; the outer tube connected with the three-way tube and the inner tube form the medium flow cavity.
3. The multi-layer vacuum tube according to claim 2, characterized in that: The three-way pipe is sealed and connected to the inner pipe through an inner pipe sealing plate.
4. The multi-layer vacuum tube according to claim 3, characterized in that: The medium pipeline is matched and connected to the side wall of each of the three-way pipes; the medium pipeline includes a first pipeline and a second pipeline; the first pipeline is on the same side as the medium inflow end of the inner pipe; the second pipeline is on the same side as the medium outflow end of the inner pipe.
5. The multi-layer vacuum tube according to claim 4, characterized in that: The second medium flows from the first pipe into the outer pipe and then flows out from the second pipe, or flows from the second pipe into the outer pipe and then flows out from the first pipe.
6. The multi-layer vacuum tube according to any one of claims 1 to 5, characterized in that: The medium pipeline is formed by connecting a horizontal pipe, an elbow pipe and a lead-out pipe; The transverse tube is vertically connected to the outer tube; The elbow pipe has one end connected to the horizontal pipe; One end of the outlet pipe is connected to the other end of the elbow pipe, and the other end is connected to a pipeline flange; the outlet pipe is arranged parallel to the inner pipe.
7. The multi-layer vacuum tube according to claim 1, characterized in that: The sleeve is sealedly connected to the inner pipe and the medium pipeline respectively through a sleeve sealing plate.
8. The multi-layer vacuum tube according to claim 1, characterized in that: Both ends of the inner pipe are respectively connected with a pipeline flange.