Ultra-high pressure container structure and installation method thereof

Abstract

The present invention discloses an ultra-high pressure container structure and an installation method thereof, and relates to the technical field of ultra-high pressure container equipment; the structure comprises at least one layer of pressure pipe network, a pipe support and a pressure pipe manifold, each layer of the pressure pipe network comprises a plurality of pressure pipes, and the pressure pipes are interconnected through pipe connecting pieces to form a rectangular network structure; two adjacent layers of the pressure pipe network are supported and fixed by the pipe support; the pressure pipe manifold is used to connect each layer of the pressure pipe network, so that each layer of the pressure pipe network is interconnected to form a pressure pipe network group, and the pressure pipe network group has an inlet and outlet connected to the pressure pipes; by implementing the technical solution, the technical problems of very tight supply and great manufacturing difficulty of small ultra-high pressure containers can be effectively solved; ultra-high pressure vessels can be replaced by ultra-high pressure pipes combined into a pipe bundle, which can effectively reduce the manufacturing difficulty of ultra-high pressure containers, reduce their manufacturing costs, and are convenient, safe and reliable to use in practical applications.

Description

Technical Field

[0001] The present invention relates to the technical field of ultra-high pressure container equipment, and in particular to an ultra-high pressure container structure and an installation method thereof. Background Art

[0002] In the current application technology field of hydrogen filling stations, ultra-high pressure container equipment is often used, and the common working pressure levels of existing ultra-high pressure containers are 35MPa, 70MPa, and 140MPa. In order to verify the application characteristics of hydrogen at different pressure levels and the use of accessories, a series of tests are required, such as testing the pressure-bearing reliability of valves, testing the sealing characteristics of valves, testing the ultimate life of valves, etc., and proposing new prevention and improvement through test data. The ultra-high pressure container device required for such tests does not involve a large container volume, generally around 100L-500L, and the working pressure of the ultra-high pressure container filled with hydrogen needs to reach 140MPa and above. At present, there is no such container above 100MPa at home and abroad. The manufacturing specifications and relevant technical standards of ultra-high pressure pressure vessels are so large that pressure vessel manufacturing enterprises have no basis for production, resulting in strong demand and tight supply of ultra-high pressure vessels of this type of volume pressure; and in general, the manufacture of large-volume ultra-high pressure pressure vessels has high requirements on the wall thickness design to ensure the working needs of ultra-high pressure vessel equipment, and therefore the manufacturing of the container wall of ultra-high pressure vessel equipment is very difficult and the manufacturing cost is also very high. For example, the current existing technology for increasing the structural strength of the ultra-high pressure container wall is to perform prestressing strengthening treatment before the container is used to make the container wall produce plastic deformation, such as shrink-type ultra-high pressure containers; and the other is to adopt wire winding and tape winding technology, such as prestressed steel wire winding and splitting technology.

[0003] Therefore, in the process of realizing the embodiments of the present invention, the inventors of the present application found that the above-mentioned prior art has at least the following technical problems: the above-mentioned small-volume ultra-high pressure pressure vessels have the problem of strong demand and tight supply, and this type of small-volume ultra-high pressure vessels have high requirements for the high inner and outer diameter ratio and high-strength materials of ultra-high pressure vessels, resulting in the defects of great manufacturing difficulty and very high manufacturing cost. If the shrink sleeve technology and prestressed steel wire winding and splitting technology are applied to this type of container, it is still impossible to fundamentally solve the problem of uneven stress in the container, and there are great safety hazards in practical use. In view of the above-mentioned technical problems, it is urgent for technical personnel in this field to study and design an ultra-high pressure container structure and its installation method to fundamentally solve the problem of uneven stress in the ultra-high pressure container, reduce the difficulty of manufacturing this type of container equipment, and make it convenient, safe and reliable in practical application. Summary of the invention

[0004] In order to solve the technical problems of the above-mentioned small ultra-high pressure containers being in very tight supply and difficult to manufacture, the purpose of the present invention is to provide an ultra-high pressure container structure, which aims to effectively utilize ultra-high pressure pipelines combined into a tube bundle to replace the ultra-high pressure pressure vessel, fundamentally solve the problem of uneven stress in the ultra-high pressure container, and obtain ultra-high pressure containers of different volumes by adjusting the combination form of the tube bundle, which can effectively reduce the difficulty of manufacturing the ultra-high pressure container and reduce its manufacturing cost, and is easy to use, safe and reliable in practical applications.

[0005] The technical solution adopted by the present invention is as follows:

[0006] An ultra-high pressure container structure, comprising

[0007] At least one layer of pressure pipe network, each layer of the pressure pipe network includes a plurality of pressure pipes, and the pressure pipes are interconnected through pipe connecting pieces to form a rectangular network structure;

[0008] Pipeline supports, through which the pressure pipeline networks of two adjacent layers are supported and fixed, so that the pressure pipeline networks of each layer are superimposed and fixed;

[0009] A pressure pipe manifold is used to connect each layer of the pressure pipe network so that each layer of the pressure pipe network is interconnected to form a pressure pipe network group. The pressure pipe network group has a rectangular layered structure and has an inlet and outlet connected to the pressure pipe.

[0010] The pressure pipes in the technical solution are all ultra-high pressure pipes that can withstand a working pressure of 140MPa and above. Without considering the pipe connecting parts, the volume of the pressure pipes of each layer of the pressure pipe network can be added up to obtain the volume of each layer of the ultra-high pressure container. Then, each layer of the pressure pipe network is connected through a pressure pipe manifold to obtain the ultra-high pressure pressure volume required for the working pressure. That is, the ultra-high pressure pipes are combined into a tube bundle to replace the ultra-high pressure pressure vessel, which can fundamentally solve the problem of uneven stress in the ultra-high pressure container, and small ultra-high pressure containers of different volumes can be obtained by adjusting the combination form of the tube bundle, which can effectively reduce the difficulty of manufacturing the ultra-high pressure container and reduce its manufacturing cost. It is easy to use, safe and reliable in practical applications.

[0011] Optionally, the number of layers of the pressure pipe network group is less than or equal to 25 layers, and each layer of the pressure pipe network includes a first pressure pipe and a second pressure pipe, the number of first pressure pipes is 2+1N, and the number of second pressure pipes is 2+2N, where N is an integer and 1≤N≤20.

[0012] Optionally, each of the first pressure pipelines has the same length and is arranged in parallel, and the second pressure pipelines between two adjacent first pressure pipelines have the same length. The second pressure pipelines at both ends of the first pressure pipeline are arranged and connected in sequence, and the lengths of the two adjacent connected second pressure pipelines can be the same, or of course can be different, and can be flexibly combined according to actual conditions to meet the actual needs of different customers.

[0013] Preferably, the length of the first pressure pipeline is in the range of 2m-6m; the length of the second pressure pipeline is in the range of 100mm-300mm. Specifically, the second pressure pipeline can be adjusted within the design range. By designing the length of the second pressure pipeline in the range of 100-300mm, the number of pipe groups of the pressure pipeline can be increased while ensuring the structural strength of the high-pressure vessel, and a larger ultra-high-pressure vessel volume can be obtained under the same large shape conditions, so that the pressure pipeline network structure is compact and stable; and the length of the first pressure pipeline is designed to be no more than 6m, which is convenient for material acquisition and secondary processing.

[0014] Optionally, the two ends of the first pressure pipeline inside the pressure pipeline network are connected to the adjacent second pressure pipeline through a tee pipe fitting; the two ends of the first pressure pipeline outside the pressure pipeline network are connected to the second pressure pipeline through an elbow. Specifically, in the technical solution, the connection method between the tee pipe fitting and the elbow and the high-pressure pipeline is a high-pressure threaded connection.

[0015] Optionally, the pressure pipe manifold is arranged on the first pressure pipe outside the pressure pipe network, and the pressure pipe manifold is connected with the first pressure pipe on the same side of the pressure pipe network group, so that each layer of the pressure pipe network is connected with the pressure pipe manifold. Specifically, the pressure pipe manifold can be staggered and connected with the left and right ends of the first pressure pipe on one side of the pressure pipe network group. Of course, the pressure pipe manifold can also be divided into different installation sections and staggered and connected with the first pressure pipes on both sides of the pressure pipe network group, and ensure that each layer of the pressure pipe network is connected with the pressure pipe manifold.

[0016] Optionally, the pressure pipe manifold is arranged in the middle of the first pressure pipe outside the pressure pipe network, and the pressure pipe manifold includes an odd-numbered manifold and an even-numbered manifold, and the odd-numbered manifold and the even-numbered manifold are arranged in a staggered manner along the first pressure pipes on both sides of the ultra-high pressure vessel. In this way, the pressure pipe network group is connected by a tee pipe fitting and a manifold to form a rectangular ladder structure. Without considering the pipe connecting piece, the volume of the first pressure pipe, the second pressure pipe and the pressure pipe manifold is added to obtain the volume of the required ultra-high pressure vessel.

[0017] Optionally, the inlet and outlet are arranged on the topmost pressure pipeline network or the bottommost pressure pipeline network of the pressure pipeline network group, and the inlet and outlet include inlet and outlet pipes and a switch valve, and the inlet and outlet pipes are connected to the first pressure pipeline and the second pressure pipeline at the corners of the topmost pressure pipeline network or the bottommost pressure pipeline network through a three-way joint.

[0018] Optionally, it further includes an unloading valve and a pressure gauge, the unloading valve and the pressure gauge are arranged on the first pressure pipeline of the topmost pressure pipeline network of the pressure pipeline network group, the unloading valve is provided with a relief outlet, and a ball valve is provided on the pipeline connecting the pressure gauge and the first pressure pipeline. Specifically, a needle valve is also designed on the pipeline connecting the unloading valve and the first pressure pipeline.

[0019] Optionally, the pipe support includes a side column support A arranged on one side of the second pressure pipe interconnected, a side column support B arranged on one side of the first pressure pipe, a crossbeam support and a circumferential fixing frame, and each layer of the pressure pipe network is fixedly connected to the side column support A and the side column support B; the crossbeam support is extended along the bottom of the first pressure pipes arranged in parallel and fixedly connected to the first pressure pipes, and the two ends of the crossbeam support are respectively fixedly connected to the side column supports B close to the first pressure pipes on both sides; the circumferential fixing frame includes an upper fixing frame and a lower fixing frame, and the upper and lower fixing frames are respectively fixedly connected to the upper and lower ends of the side column supports A and the side column supports B around the pressure pipe network group; it also includes a pipe clamp fixing piece, and the middle part of the first pressure pipe on the inner side of each layer of the pressure pipe network is provided with a pipe clamp fixing piece fixedly installed on the crossbeam support, the first pressure pipe on the outer side of the pressure pipe network is provided with a pipe clamp fixing piece fixedly installed on the side column support B, and the second pressure pipes interconnected are provided with a pipe clamp fixing piece fixedly installed on the side column support A. In the present technical solution, the pressure pipe network group and the pipe support can be fixed by screw or bolt connection.

[0020] On the other hand, the present invention also provides an installation method of an ultra-high pressure container structure, which is used to prepare the above ultra-high pressure container structure, comprising the following steps:

[0021] Step S1, selecting the length and installation quantity of the first pressure pipeline, the second pressure pipeline and the pressure pipeline manifold according to the preset volume of the ultra-high pressure container;

[0022] Step S2, threading the two ends of the selected first pressure pipeline, the second pressure pipeline and the pressure pipeline manifold respectively, and performing degreasing and cleaning treatment after the processing is completed;

[0023] Step S3, screwing the internal threaded sleeve and the external threaded sleeve into the two ends of the first pressure pipeline and the second pressure pipeline in sequence, and connecting the first pressure pipeline and the second pressure pipeline into a single-layer pressure pipeline network with a rectangular mesh structure by using a tee pipe fitting and an elbow;

[0024] Step S4, repeating the above steps S2 and S3, preparing M layers of pressure pipe network according to the preset number of layers M of the pressure pipe network group;

[0025] Step S5, fixing M layers of pressure pipe networks on the pipe support to form a pressure pipe network group with a rectangular layered structure;

[0026] Step S6, connecting the pressure pipe manifold with the first pressure pipe of each layer of the pressure pipe network by using a connecting tee, so that each layer of the pressure pipe network is connected to each other.

[0027] Optionally, the installation order of installing M layers of pressure pipe networks on the pipe support in step S5 is as follows: step a, selecting a crossbeam support according to the arrangement length of the first pressure pipe, and fixing the crossbeam support on the bottom of the first pressure pipe arranged in parallel in each layer of the pressure pipe network; step b, installing the side column support A from the side of the second pressure pipe that is interconnected in the bottom layer of the pressure pipe network, and fixing the bottom layer of the pressure pipe network on the side column support A; step c, fixing the top layer of the pressure pipe network on the side column support A; step d, fixing the M-1 layer to the second layer of the pressure pipe network on the side column support A in sequence to form a layered pressure pipe network group; step e, fixing the side column support B on the outside of the first pressure pipe in the pressure pipe network group, and fixing each layer of the pressure pipe network and the crossbeam support on the side column support B; step f, finally fixing the circumferential fixed support on the side column support A and the side column support B around the pressure pipe network group. Since the pressure pipe connections in the pressure pipe network are numerous and complex, the pipe supports are designed as dispersed supports rather than integral supports. The installation is convenient and flexible using the above sequence, and the pressure pipe network structure has good stability after installation.

[0028] Optionally, the fixing and installation in step S5 is performed by screw fixing, and other fixing and connection methods such as welding can also be used.

[0029] As described above, the present invention has at least the following beneficial effects compared with the prior art:

[0030] 1. The ultra-high pressure vessel structure design of the present invention utilizes ultra-high pressure pipes combined into a tube bundle to replace the ultra-high pressure pressure vessel, and the volume of the required ultra-high pressure pressure vessel is obtained by adding the volumes of the pipes combined into the tube bundle, which can effectively reduce the difficulty of manufacturing the ultra-high pressure vessel and reduce its manufacturing cost. The technical solution proposes to use ultra-high pressure pipes combined into a tube bundle to replace the ultra-high pressure pressure vessel, which can effectively meet the market demand for the difficult production and supply of ultra-high pressure pressure vessels in the hydrogen field. It is easy to use, safe and reliable in practical applications, and has good practicality.

[0031] 2. The present invention can obtain ultra-high pressure vessels of different volumes by adjusting the combination form of the tube bundles. Each layer of the pressure pipe network can adopt a different combination form of the tube bundles, or can adopt the same combination form of the tube bundles to be stacked and fixed to form an ultra-high pressure vessel of the required volume. The combination is flexible and convenient, and the combination form can be changed arbitrarily to meet the needs of different customers.

[0032] 3. The present invention fundamentally solves the problem of uneven stress in ultra-high pressure vessels, cleverly overcomes the technical defect of the prior art that prestressed reinforcement technology is required to manufacture ultra-high pressure vessel equipment, realizes the optimal distribution of stress in ultra-high pressure vessels, enhances the safety and use effect of ultra-high pressure vessel equipment, and can significantly reduce the difficulty and cost of manufacturing ultra-high pressure vessels while easily meeting the working pressure requirements of ultra-high pressure vessels. Therefore, the present invention provides a very practical and effective solution for small ultra-high pressure vessels.

[0033] 4. The present invention designs the pressure pipe network group into a rectangular layered structure, which can be arbitrarily changed in size to match different installation space requirements. In the present invention, each layer of the pressure pipe network is arranged in parallel with first pipes of the same length at equal distances, and the second pressure pipes that are interconnected and have the same length form the long side of the pressure pipe network, and the first pressure pipes form the short side of the pressure pipe network group. The first pressure pipes on both sides of the pressure pipe network group are staggered and connected through odd-numbered layers of headers and even-numbered layers of headers to form a rectangular ladder-like structure as the best combination. The entire ultra-high pressure container has good structural strength, which is conducive to improving the convenience of use and safety and reliability of the ultra-high pressure container in practical applications.

[0034] 5. The installation method of the present invention is convenient and flexible to operate. The pressure pipeline network group after installation has good structural stability, which can effectively ensure the reliability of the pressure pipeline connection, and withstand and weaken the pressure pipeline vibration caused by the pressure fluctuation in the pressure pipeline, thereby ensuring the structural strength of the ultra-high pressure container and thus ensuring its safety in use. It provides a very practical and effective solution for small ultra-high pressure containers, and provides a very convenient manufacturing method for small ultra-high pressure containers, which can effectively reduce the difficulty of manufacturing ultra-high pressure containers and reduce their manufacturing costs, significantly solve the current supply demand of small ultra-high pressure containers, and is well applied in practice, thereby significantly improving the economic benefits of the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The present invention will be described by way of specific embodiments with reference to the accompanying drawings, in which

[0036] Figure 1 2 is a schematic structural diagram of an ultra-high pressure container structure according to an embodiment of the present invention;

[0037] Figure 2 Embodiment of the present invention Figure 1 A schematic diagram of one side of a second pressure pipeline interconnected with the middle pressure pipeline network group;

[0038] Figure 3 Embodiment of the present invention Figure 1 A schematic diagram of one side of the first pressure pipeline of the medium pressure pipeline network group;

[0039] Figure 4 Embodiment of the present invention Figure 1 A top view of the medium pressure pipeline network group;

[0040] Figure 5 Embodiment of the present invention Figure 1 Schematic diagram of the top-level pressure pipe network;

[0041] Figure 6 Embodiment of the present invention Figure 2 Installation diagram of the intermediate unloading valve and pressure gauge;

[0042] Figure 7 Embodiment of the present invention Figure 1 Schematic diagram of the second-layer pressure pipe network;

[0043] Figure 8 Embodiment of the present invention Figure 1 Schematic diagram of the lowest level pressure pipe network.

[0044] Explanation of the reference numerals: 10-pressure pipe network; 11-first pressure pipe; 12-second pressure pipe; 13-tee pipe fitting; 14-elbow; 20-pressure pipe manifold; 21-odd-layer manifold connecting tee; 22-even-layer manifold connecting tee; 30-pipe support; 31-upper end fixing frame; 32-lower end fixing frame; 33-side column support A; 34-side column support B; 35-crossbeam support; 40-unloading valve; 41-release outlet; 42-needle valve; 50-pressure gauge; 51-ball valve; 60-pipe clamp fixing piece; 70-inlet and outlet. DETAILED DESCRIPTION

[0045] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0046] Any feature disclosed in this specification (including any additional claims and abstract), unless otherwise stated, may be replaced by other equivalent or alternative features having similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0047] Embodiment 1

[0048] The embodiment is basically as follows Figures 1 to 4 As shown: This embodiment provides an ultra-high pressure container structure, which is used for filling high-pressure hydrogen for detection tests. The ultra-high pressure container structure of this embodiment includes at least one layer of pressure pipeline network 10, a pressure pipeline manifold 20 and a pipeline support 30. Each layer of pressure pipeline network 10 includes multiple pressure pipelines, and the pressure pipelines are interconnected through pipeline connecting pieces to form a rectangular network structure. The outer diameter size of the pressure pipeline and the pipeline connecting piece provided in this embodiment is preferably 25.4mm, and the wall thickness is 5.56mm. The 316L stainless steel pipe; two adjacent layers of pressure pipeline network 10 are supported and fixed by the pipeline support 30, so that each layer of pressure pipeline network 10 is superimposed and fixed; the pressure pipeline manifold 20 is used to connect each layer of pressure pipeline network 10, so that each layer of pressure pipeline network 10 is interconnected to form a pressure pipeline network group, and the formed pressure pipeline network group is a rectangular layered structure and the pressure pipeline network group has an inlet and outlet 70 connected to the pressure pipeline.

[0049] Specifically, in order to ensure the stability of the ultra-high pressure vessel structure, the number of layers of the pressure pipe network group is less than or equal to 25 layers. This embodiment takes the provision of ten layers of pressure pipe networks 10 for stacking and fixing to form a pressure pipe network group as an example, and each layer of the pressure pipe network 10 includes a first pressure pipe 11 and a second pressure pipe 12. The number of the first pressure pipes 11 is 2+1N, and the number of the second pressure pipes 12 is 2+2N, wherein N is an integer and is preferably 1≤N≤20. The first pressure pipes 11 and the second pressure pipes 12 are interconnected through pipe connecting pieces to form a rectangular structure. This embodiment takes the provision of a single-layer pressure pipe network 10 including 10 first pressure pipes 11 as an example. The first pressure pipes 11 and the second pressure pipes 12 are connected to each other through pipe connecting pieces to form a rectangular structure. The length of the pressure pipe 11 ranges from 2m to 6m. The length of the first pressure pipe 11 can be 2m, 2.5m, 3m, 4m, 4.5m, 5m, 5.5m, 6m and other lengths. The length of the first pressure pipe 11 selected in this embodiment is uniformly 2m, and 10 2m long first pressure pipes 11 are arranged in parallel. The second pressure pipes 12 between two adjacent first pressure pipes 11 have the same length. The length of the second pressure pipe 12 ranges from 100mm to 300mm. The adjacent and connected second pressure pipes 12 can be arbitrarily adjusted within this range so that the first pressure pipe 11 and the second pressure pipe 12 are matched and connected to form a rectangular structure.

[0050] To ensure the stability of the high-pressure vessel structure, in this embodiment, the second pressure pipes 12 interconnected at both ends of the first pressure pipe 11 form one side length of the pressure pipe network 10, and the second pressure pipes 12 on both sides form the other side length of the pressure pipe network 10. In this embodiment, the length of each second pressure pipe 12 is the same, so that the first pressure pipes 11 are arranged in parallel at equal distances. In this embodiment, 18 second pressure pipes 12 with a length of 200 mm are provided as an example, that is, 9 second pressure pipes 12 are respectively arranged at both ends of the first pressure pipe 11 and are interconnected to form one side length of the pressure pipe network 10. The two ends of the first pressure pipe 11 inside the pressure pipe network 10 are connected to the adjacent second pressure pipes 12 through a three-way pipe fitting 13; the two ends of the first pressure pipe 11 outside the pressure pipe network 10 are connected to the second pressure pipe 12 through an elbow 14.

[0051] As described above, the two long sides of the single-layer pressure pipe network 10 of this embodiment respectively use 9 second pressure pipes 12 of 25.4x5.56 (1 inch) with a length of 200 m each, which are connected by the two straight ends of the three-way pipe fitting 13. The short sides of the pressure pipe network group use 25.4x5.56 (1 inch) 2m long first pressure pipes 11 connected by elbows 14 to the second pressure pipes 12 at both ends. The eight first pressure pipes 11 arranged in parallel on the inner side of the pressure pipe network 10 are connected by the branch ends of the three-way pipe fitting 13 to the second pressure pipes 12 adjacent to the two ends. The three-way and The threaded connection of the elbow 14 adopts a high-pressure threaded connection. In this way, without considering the cavity volume of the pipe connecting piece, in this embodiment, 10 2m long first pressure pipes 11 and 18 200mm long second pressure pipes 12 are connected through 16 three-way pipes 13 and 4 elbows 14 to form a single-layer 3.68L single-layer pressure pipe network 10 ultra-high pressure container. In this way, ten layers of pressure pipe networks 10 are stacked and fixed by pipe supports 30 to form a pressure pipe network group, and each layer of pressure pipe network 10 is connected by a pressure pipe manifold 20. Specifically, as shown in FIG. Figure 2 and Figure 3 As shown, in this embodiment, the pressure pipe manifold 20 is arranged on the first pressure pipe 11 on the same side of the pressure pipe network 10, and the pressure pipe manifold 20 is connected with the first pressure pipe 11 on the same side of the pressure pipe network group. Specifically, the pressure pipe manifold 20 can be staggered and connected along the left and right ends of the first pressure pipe 11 on one side of the pressure pipe network group. Of course, the pressure pipe manifold 20 can also be divided into different installation sections and staggered and connected with the first pressure pipes 11 on both sides of the pressure pipe network group, so that each layer of the pressure pipe network 10 is connected to the pressure pipe manifold 20, forming an ultra-high pressure container with a multiplied volume.

[0052] The inlet and outlet 70 of this embodiment is arranged on the bottom-layer pressure pipeline network 10 of the pressure pipeline network group. The inlet and outlet 70 includes an inlet and outlet pipe and a switch valve. The inlet and outlet pipes are connected to the first pressure pipeline 11 and the second pressure pipeline 12 at the corners of the bottom-layer pressure pipeline network 10 through a three-way joint; at the same time, in order to ensure the convenience of use and safety and reliability of the ultra-high pressure container, an unloading valve 40 and a pressure gauge 50 are also arranged on the pressure pipeline network group. In this embodiment, the unloading valve and the pressure gauge 50 are preferably arranged on the first pressure pipeline 11 of the top-layer pressure pipeline network 10 of the pressure pipeline network group, and the unloading valve 40 is provided with a venting outlet 41, and a needle valve 42 is also designed on the pipeline connecting the unloading valve 40 and the first pressure pipeline 11; a ball valve 51 is arranged on the pipeline connecting the pressure gauge 50 and the first pressure pipeline 11, which is conducive to the convenience of use and safety and reliability of the ultra-high pressure container in practical applications.

[0053] In order to increase the structural strength of the entire ultra-high pressure container, the ultra-high pressure container of this embodiment also includes a pipe clamp fixing 60. The middle part of the first pressure pipe 11 inside each layer of the pressure pipe network 10 is provided with a pipe clamp fixing 60. The first pressure pipe 11 outside the pressure pipe network 10 and the second pressure pipe 12 connected thereto are provided with pipe clamp fixings 60. The second pressure pipe 12 connected to each other at both ends of the first pressure pipe 11 is provided with a pipe clamp fixing 60, so that the entire ultra-high pressure container structure has good structural stability. In order to ensure the structural stability of the pipe support 30 supporting the fixed pressure pipe network group, the pipe support 30 includes a side column support A33 provided on one side of the second pressure pipes 12 connected to each other, a side column support B34 provided on one side of the first pressure pipe 11, a crossbeam support 35 and a circumferential fixing frame. Each layer of the pressure pipe network 10 is fixedly connected to the side column support A33 and the side column support B34; the crossbeam support 35 is extended along the bottom of the first pressure pipes 11 arranged in parallel and is fixedly connected to the first pressure pipes 11. The two ends of the crossbeam support 35 are respectively fixedly connected to the side column support B34 close to the first pressure pipes 11 on both sides; the circumferential fixing frame includes an upper end fixing frame 31 and a lower end fixing frame 32, and the upper end fixing frame 31 and the lower end fixing frame 32 are respectively fixedly connected to the upper and lower ends of the side column support A33 and the side column support B34 around the pressure pipe network group; specifically, the first pressure pipe 11 inside each layer of the pressure pipe network 10 is fixed to the corresponding crossbeam support 35 at its bottom through the pipe clamp fixing piece 60 in the middle thereof, and each layer The first pressure pipe 11 outside the pressure pipe network 10 is fixed to the side column bracket B34 through the pipe clamp fixing piece 60, and the second pressure pipe 12 of the first pressure pipe 11 connected to each other at both ends is fixed to the side column bracket A33 through the pipe clamp fixing piece 60; in this embodiment, the fixed connection method of the pressure pipe network group and the pipe bracket 30 can be specifically fixed by screw or bolt connection, and of course other fixing methods such as welding can also be used; therefore, in this embodiment, the pipe bracket 30 is designed as a dispersed bracket rather than an integral bracket, and a layer-by-layer installation method is adopted, and each layer of the pressure pipe network 10 is fixed to the pipe bracket 30 by using the pipe clamp fixing piece 60, and then the side column bracket A33 and the side column bracket B34 around the pressure pipe network group are reinforced by using the upper end fixing frame 31 and the lower end fixing frame 32, and the distance between the adjacent two side column brackets is ensured not to exceed 1m, which can effectively ensure the reliability of the pressure pipe connection, and withstand and reduce the pressure pipe vibration caused by pressure fluctuations, ensure the structural strength of the ultra-high pressure container, and then ensure its safety in use.

[0054] The single-layer pressure pipe network 10 in the above embodiment is only a preferred solution, which is not limited to this. On this basis, targeted adjustments can be made according to actual conditions. For example, the lengths of the second pressure pipes 12 on the long sides of each side of the pressure pipe network 10 can be different. It is only necessary to ensure that the lengths of the second pressure pipes 12 relatively arranged between the first pressure pipes 11 are the same to connect and form a rectangular pressure pipe network 10. In this way, there can be multiple combination and matching forms of the single-layer pressure pipe network 10, and there can be multiple superposition and matching forms of the pressure pipe network group, which are not limited to each layer of the pressure pipe network 10 being exactly the same and overlapping and fixed. It is ensured that each layer of the pressure pipe network 10 is interconnected, and ultra-high pressure containers with different superposition volumes can be obtained by adjusting the combination form of the pipe bundle. It is flexible and convenient, and can be arbitrarily changed to meet the needs of different customers. It can also adopt any size change to match different installation space requirements.

[0055] Embodiment 2

[0056] The second embodiment is basically the same as the first embodiment, except that: Figures 5 to 8 As shown, this embodiment adopts a single-layer pressure pipe network 10 of different volumes to stack and fix multiple groups on each other. In this embodiment, the pipe support 30 used to fix the pressure pipe network group includes a plurality of parallel fixed frames, which are fixedly arranged on both sides of the long side of the pressure pipe network group, and are fixedly connected to each layer of the pressure pipe network 10 to form a stacked and fixed pressure pipe network group; each layer of the pressure pipe network 10 is connected together through a pressure pipe manifold 20, so that the volume of the ultra-high pressure pipe container can be doubled.

[0057] In this embodiment, the pressure pipe manifold 20 is arranged in the middle of the first pressure pipe 11 outside the pressure pipe network 10, and the pressure pipe manifold 20 includes an odd-numbered layer manifold and an even-numbered layer manifold. Specifically, the upper end and the lower end of the odd-numbered layer manifold are respectively connected to the middle of the upper and lower first pressure pipes 11 through the odd-numbered layer manifold connecting tees 21, and the upper end and the lower end of the even-numbered layer manifold are respectively connected to the middle of the upper and lower first pressure pipes 11 through the even-numbered layer manifold connecting tees 22. The odd-numbered layer manifolds and the even-numbered layer manifolds are arranged in an alternating manner along the first pressure pipes 11 on the left and right sides of the ultra-high pressure vessel. In this way, each layer of the pressure pipe network 10 is connected through the tee pipe fitting 13 and the manifold to form a rectangular ladder structure. Without considering the pipeline connecting parts, the volume of the first pressure pipe 11, the second pressure pipe 12 and the pressure pipe manifold 20 is added together to obtain the required volume of the ultra-high pressure vessel.

[0058] In this embodiment, 24 second pressure pipes 12 with a diameter of 150 mm / piece and a diameter of 25.4 x 5.56 (1 inch) are respectively used on the long sides of the single-layer pressure pipe network 10, which are connected by two straight ends of the three-way pipe fittings 13. The short sides of the pressure pipe network group use 6m long first pressure pipes 11 with a diameter of 25.4 x 5.56 (1 inch) to be connected with the second pressure pipes 12 at both ends by elbows 14. Eleven first pressure pipes 11 arranged in parallel on the inner side of the pressure pipe network 10 are connected with the second pressure pipes 12 adjacent to both ends by the branch ends of the three-way pipe fittings 13. In this way, without considering the cavity volume of the pipe connecting parts, in this embodiment, 13 first pressure pipes 11 with a length of 6 m and 24 second pressure pipes 150 mm long are connected by 20 three-way pipe fittings 13 and 4 elbows 14 to form a single-layer 12.97L single-layer pressure pipe network 10 ultra-high pressure container. According to multiple tests conducted by the applicant, in order to ensure the ease of use and structural stability of the ultra-high pressure container structure, the ultra-high pressure container has a maximum of dozens of layers, and pressure vessels in the range of 35L-600L can be obtained by combining them in different proportions. This is beneficial to improving the ease of use and safety and reliability of ultra-high pressure containers in practical applications, and is suitable for promotion and application.

[0059] In summary, the ultra-high pressure container structure design of this embodiment utilizes ultra-high pressure pipes to be combined into a tube bundle to replace the ultra-high pressure pressure vessel. Ultra-high pressure containers of different volumes can be obtained by adjusting the combination form of the tube bundle. Each layer of the pressure pipe network 10 can adopt a different combination form of tube bundles, or can adopt the same combination form of tube bundles to be stacked and fixed to form an ultra-high pressure container of the required volume. The combination is flexible and convenient, and its combination form can be changed arbitrarily to meet the needs of different customers, which can effectively reduce the difficulty of manufacturing ultra-high pressure containers and reduce their manufacturing costs.

[0060] At the same time, this embodiment proposes to use pipelines instead of ultra-high pressure pressure vessels, which fundamentally solves the problem of uneven stress in ultra-high pressure vessels, cleverly overcomes the technical defects of the prior art that prestressed reinforcement technology is required to manufacture ultra-high pressure vessel equipment, and achieves optimal distribution of stress in ultra-high pressure vessels, thereby enhancing the safety and use effect of ultra-high pressure vessel equipment. It provides a very practical and effective solution for small ultra-high pressure containers, which can effectively meet the market demand for the difficult production and supply of ultra-high pressure vessels in the hydrogen field. It is easy to use, safe and reliable in practical applications, has good practicality, and is suitable for promotion and application.

[0061] Embodiment 3

[0062] On the other hand, this embodiment also provides an installation method of an ultra-high pressure container structure, which is used to prepare the above-mentioned 150L ultra-high pressure container structure, which can withstand a working pressure of 140MPa, and comprises the following steps:

[0063] Step S1, according to the preset 150L ultra-high pressure container volume, 15 single-layer 3.8m long first pressure pipes 11, 28 single-layer 150mm long second pressure pipes 12 and 14 250mm long pressure pipe manifolds 20 are selected to design a 15-layer pressure pipe network group;

[0064] Step S2, thread processing is performed on both ends of the selected first pressure pipe 11, the second pressure pipe 12 and the pressure pipe manifold 20, and degreasing and cleaning are performed after the processing is completed;

[0065] Step S3, screwing the internal threaded sleeves into the two ends of the first pressure pipeline 11 and the second pressure pipeline 12 to the dead point, then screwing the external threaded sleeves into the two ends, and connecting the first pressure pipeline 11 and the second pressure pipeline 12 into a single-layer pressure pipeline network 10 with a rectangular mesh structure by using the tee pipe fitting 13 and the elbow 14; specifically, the two ends of the first pressure pipeline 11 inside the pressure pipeline network 10 are connected to the adjacent second pressure pipeline 12 through the tee pipe fitting 13; the two ends of the first pressure pipeline 11 outside the pressure pipeline network 10 are connected to the second pressure pipeline 12 through the elbow 14, wherein the connection mode between the tee pipe fitting 13 and the elbow 14 and the high-pressure pipeline is a high-pressure threaded connection;

[0066] Step S4, repeating the above steps S2 and S3, preparing a 15-layer pressure pipeline network 10 according to a preset 15-layer pressure pipeline network group;

[0067] Step S5, 15 layers of pressure pipe networks 10 are fixedly installed on the pipe support 30 to form a rectangular layered pressure pipe network group; the specific installation sequence is: step a, select the crossbeam support 35 according to the arrangement length of the first pressure pipe 11, and fix the crossbeam support 35 to the bottom of the first pressure pipe 11 arranged in parallel in each layer of the pressure pipe network 10; step b, start installing the side column support A33 from the side of the second pressure pipe 12 interconnected in the bottom layer of the pressure pipe network 10, and fix the bottom layer of the pressure pipe network 10 on the side column support A33; step c, then fix the top layer of the pressure pipe network 10 on the side column support A33; step c, then fix the top layer of the pressure pipe network 10 on the side column support A33; step c, then fix the top layer of the pressure pipe network 10 on the side column support A33; step c, On the side column bracket A33; step d, the 14th to the 2nd layer of pressure pipe network 10 are fixedly installed on the side column bracket A33 in sequence to form a layered pressure pipe network group; step e, the side column bracket B34 is fixedly installed on the outside of the first pressure pipe 11 in the pressure pipe network group, and each layer of pressure pipe network 10 and the crossbeam bracket 35 are fixedly installed on the side column bracket B34; step f, finally, the circumferential fixed brackets are fixedly installed on the side column bracket A33 and the side column bracket B34 around the pressure pipe network group; in this embodiment, the fixed connection method of the pressure pipe network group and the pipe bracket 30 is specifically fixed by screw connection;

[0068] In step S6, the pressure pipe manifold 20 is connected to the first pressure pipe 11 of each layer of the pressure pipe network 10 by using a connecting tee, so that each layer of the pressure pipe network 10 is connected to each other.

[0069] The pressure pipes in the above embodiments are all ultra-high pressure pipes that can withstand a working pressure of 140 MPa and above. Without considering the pipe connecting parts, the volume of the pressure pipes of each layer of the pressure pipe network can be added to obtain the volume of each layer of the ultra-high pressure container. Then, each layer of the pressure pipe network is connected through a pressure pipe manifold to obtain the ultra-high pressure pressure volume required for the working pressure. That is, the ultra-high pressure pipes are combined into a tube bundle to replace the ultra-high pressure pressure vessel, which can fundamentally solve the problem of uneven stress in the ultra-high pressure container, and small ultra-high pressure containers of different volumes can be obtained by adjusting the combination of the tube bundles, which can effectively reduce the difficulty of manufacturing the ultra-high pressure container and reduce its manufacturing cost. It is convenient, safe and reliable to use in practical applications.

[0070] In summary, since the pressure pipelines in the pressure pipeline network are compactly and densely connected, the pipeline bracket is designed as a dispersed bracket rather than an integral bracket. The installation is convenient and flexible using the above sequence. The pressure pipeline network group after installation has good structural stability, which can effectively ensure the reliability of the pressure pipeline connection, and withstand and weaken the pressure pipeline vibration caused by the pressure fluctuation in the pressure pipeline, ensure the structural strength of the ultra-high pressure container, and then ensure its safety in use. It provides a very practical and effective solution for small ultra-high pressure containers, and provides a very convenient manufacturing method for small ultra-high pressure containers, which can effectively reduce the difficulty of manufacturing ultra-high pressure containers, reduce their manufacturing costs, and solve the current supply demand of small ultra-high pressure containers. It has been well applied in practice, thereby significantly improving the economic benefits of the enterprise.

[0071] The present invention is not limited to the above-mentioned specific embodiments, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. An ultra-high pressure container structure, characterized in that: include At least one layer of pressure pipe network, each layer of the pressure pipe network includes a plurality of pressure pipes, and the pressure pipes are interconnected through pipe connecting pieces to form a rectangular network structure; Pipeline supports, through which the pressure pipeline networks of two adjacent layers are supported and fixed, so that the pressure pipeline networks of each layer are superimposed and fixed; A pressure pipe manifold, the pressure pipe manifold is used to connect each layer of the pressure pipe network, so that each layer of the pressure pipe network is interconnected to form a pressure pipe network group, the pressure pipe network group is a rectangular layered structure and has an inlet and outlet connected to the pressure pipe; Each layer of the pressure pipeline network includes a first pressure pipeline and a second pressure pipeline; The first pressure pipeline (11) and the second pressure pipeline (12) are connected to each other via a pipeline connecting piece to form a rectangular structure; Each second pressure pipeline (12) has the same length, so that the first pressure pipelines (11) are arranged in parallel at an equal distance; It also includes an unloading valve and a pressure gauge, which are arranged on the first pressure pipeline of the top-level pressure pipeline network of the pressure pipeline network group, the unloading valve is provided with a relief outlet, and a ball valve is provided on the pipeline connecting the pressure gauge and the first pressure pipeline; It also includes pipe clamp fixings. The middle part of the first pressure pipe on the inner side of each layer of the pressure pipe network is provided with a pipe clamp fixing fixedly installed on the crossbeam bracket. The first pressure pipe on the outer side of the pressure pipe network is provided with a pipe clamp fixing fixedly installed on the side column bracket B, and the second pressure pipes that are interconnected are provided with a pipe clamp fixing fixedly installed on the side column bracket A.

2. The ultra-high pressure container structure according to claim 1, characterized in that: The number of layers of the pressure pipe network group is less than or equal to 25 layers, the number of first pressure pipes is 2+1N, and the number of second pressure pipes is 2+2N, wherein N is an integer and 1≤N≤20.

3. The ultra-high pressure container structure according to claim 2, characterized in that: Each of the first pressure pipes has the same length and is arranged in parallel, and the second pressure pipes between two adjacent first pressure pipes have the same length; the length of the first pressure pipe ranges from 2m to 6m; the length of the second pressure pipe ranges from 100mm to 300mm.

4. The ultra-high pressure container structure according to claim 3, characterized in that: The two ends of the first pressure pipeline inside the pressure pipeline network are connected to the adjacent second pressure pipeline through a three-way pipe fitting; the two ends of the first pressure pipeline outside the pressure pipeline network are connected to the second pressure pipeline through an elbow.

5. The ultra-high pressure container structure according to claim 4, characterized in that: The pressure pipe manifold is arranged on the first pressure pipe outside the pressure pipe network, and the pressure pipe manifold is connected with the first pressure pipe on the same side of the pressure pipe network group, so that each layer of the pressure pipe network is connected with the pressure pipe manifold.

6. The ultra-high pressure container structure according to claim 4, characterized in that: The pressure pipe manifold is arranged in the middle of the first pressure pipe outside the pressure pipe network, and the pressure pipe manifold includes odd-numbered layer manifolds and even-numbered layer manifolds, and the odd-numbered layer manifolds and even-numbered layer manifolds are arranged in an alternating manner along the first pressure pipes on both sides of the pressure pipe network group.

7. An ultra-high pressure container structure according to any one of claims 1 to 6, characterized in that: It also includes a relief valve and a pressure gauge, which are arranged on the first pressure pipeline of the top-level pressure pipeline network of the pressure pipeline network group. The relief valve is provided with a relief outlet, and a ball valve is provided on the pipeline connecting the pressure gauge and the first pressure pipeline.

8. A method for installing an ultra-high pressure container structure, using the ultra-high pressure container structure according to claim 1, characterized in that: The following steps are involved: Step S1, selecting the length and installation quantity of the first pressure pipeline, the second pressure pipeline and the pressure pipeline manifold according to the preset volume of the ultra-high pressure container; Step S2, threading the two ends of the selected first pressure pipeline, the second pressure pipeline and the pressure pipeline manifold respectively, and performing degreasing and cleaning treatment after the processing is completed; Step S3, screwing the internal threaded sleeve and the external threaded sleeve into the two ends of the first pressure pipeline and the second pressure pipeline in sequence, and connecting the first pressure pipeline and the second pressure pipeline into a single-layer pressure pipeline network with a rectangular mesh structure by using a tee pipe fitting and an elbow; Step S4, repeating the above steps S2 and S3, preparing M layers of pressure pipe network according to the preset number of layers M of the pressure pipe network group; Step S5, fixing M layers of pressure pipe networks on the pipe support to form a pressure pipe network group with a rectangular layered structure; Step S6, connecting the pressure pipe manifold with the first pressure pipe of each layer of the pressure pipe network by using a connecting tee, so that each layer of the pressure pipe network is connected to each other.

9. The method for installing an ultra-high pressure vessel structure according to claim 8, characterized in that: The installation order of installing the M-layer pressure pipeline network on the pipeline support in step S5 is as follows: step a, select a crossbeam support according to the arrangement length of the first pressure pipeline, and fix the crossbeam support on the bottom of the first pressure pipeline arranged in parallel in each layer of the pressure pipeline network; step b, start installing the side column support A from the side of the second pressure pipeline that is interconnected in the bottom layer of the pressure pipeline network, and fix the bottom layer of the pressure pipeline network on the side column support A; step c, then fix the top layer of the pressure pipeline network on the side column support A; step d, then fix the M-1 layer to the second layer of the pressure pipeline network on the side column support A in sequence to form a layered pressure pipeline network group; step e, fix the side column support B on the outside of the first pressure pipeline in the pressure pipeline network group, and fix each layer of the pressure pipeline network and the crossbeam support on the side column support B; step f, finally fix the circumferential fixed support on the side column support A and the side column support B around the pressure pipeline network group.

10. The method for installing an ultra-high pressure vessel structure according to claim 9, characterized in that: The fixing and installation in step S5 is performed by screw fixing.

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