Pipe connection structure

Abstract

This application provides a pipe connection structure, including: a first pipe, a first flange, a first sleeve, a second flange, and a second sleeve; the first flange has a first opening and a plurality of first threaded holes, the first opening penetrating the first flange, and the first threaded holes penetrating the first flange and surrounding the first opening; the second flange has a second opening and a plurality of second threaded holes that mate with the first threaded holes, the second opening penetrating the second flange, and the second threaded holes penetrating the second flange and surrounding the second opening, and bolts passing through the first threaded holes and second threaded holes to connect the first flange and the second flange. The pipe connection structure provided by this application, by providing a first flange and a second flange, and connecting the first flange and the second flange with bolts, facilitates installation and disassembly, thereby meeting the needs of subsequent pipe maintenance.

Description

Technical Field

[0001] This application relates to the field of biochemistry, and more particularly to a pipe connection structure. Background Technology

[0002] Pipelines are commonly used for the directional and controlled transport of fluids and are a fairly common structural feature. The length of a pipeline is related to the distance the fluid needs to be transported. Rather than directly manufacturing a pipeline the same length as the fluid transport distance, in actual production, it is more common to manufacture multiple pipeline sections first and then splice them together to obtain a pipeline of the same length as the fluid transport distance.

[0003] However, existing interconnected pipe sections are generally connected by welding. When the pipes encounter a fault and need maintenance, the pipes must be cut off to disconnect them, which is time-consuming and labor-intensive and needs to be improved. Utility Model Content

[0004] In view of this, the purpose of this application is to propose a pipe connection structure that allows for quick installation or disassembly of two pipes, facilitating subsequent maintenance.

[0005] To achieve the above objectives, this application provides a pipe connection structure, comprising:

[0006] The first pipe has an electrolytically polished surface on its inner sidewall;

[0007] The first connector includes a first flange and a first sleeve. The first flange has a first opening and a plurality of first screw holes. The first opening passes through the first flange, and the first screw holes pass through the first flange and are arranged around the first opening. One end of the first sleeve passes through the first opening and is connected to one end of the first pipe. The inner sidewall of the first sleeve has an electrolytically polished surface.

[0008] The second pipe has an electrolytically polished surface on its inner wall;

[0009] The second connector includes a second flange and a second sleeve. The second flange has a second opening and a plurality of second screw holes that mate with the first screw hole. The second opening passes through the second flange, and the second screw holes pass through the second flange and surround the second opening. One end of the second sleeve passes through the second opening and connects to one end of the second pipe, while the other end abuts against the end of the first sleeve away from the first pipe. Bolts pass through the first screw hole and the second screw hole to connect the first flange and the second flange. The inner wall of the second sleeve has an electrolytically polished surface.

[0010] Furthermore, the first sleeve includes a first sleeve portion and a first flange portion. One end of the first sleeve portion passes through the first opening and is connected to one end of the first pipe. The first flange portion is disposed around the opposite end of the first sleeve portion and extends in a direction perpendicular to the length direction of the first sleeve portion. One end face of the first flange portion contacts the surface of the first flange.

[0011] The second sleeve includes a second sleeve portion and a second flange portion. One end of the second sleeve portion passes through the second opening and is connected to one end of the second pipe. The second flange portion is disposed around the opposite end of the second sleeve portion and extends in a direction perpendicular to the length direction of the second sleeve portion. One end face of the second flange portion abuts against the surface of the second flange, and the opposite end face contacts the end face of the first flange portion away from the first flange.

[0012] Furthermore, the pipe connection structure also includes a sealing component, which is disposed between the first flange and the second flange to seal the first flange and the second flange.

[0013] Furthermore, the sealing assembly includes a sealing gasket.

[0014] Furthermore, the surfaces of the first flange and the second flange that abut against each other are provided with water ripple lines, and the sealing component is located within the water ripple lines area.

[0015] Furthermore, a first mounting groove is provided on the side of the first flange away from the first pipe, and the first flange portion is disposed in the first mounting groove;

[0016] The second flange is provided with a second mounting groove on the side away from the second pipe, and the second flange is provided in the second mounting groove.

[0017] Furthermore, a first arc transition portion is provided at the connection between the first sleeve portion and the first flange portion, and a first clearance portion is provided at the connection between the first sleeve portion and the second flange portion; a second arc transition portion is provided at the connection between the second sleeve portion and the second flange portion, and a second clearance portion is provided at the connection between the second sleeve portion and the second flange portion.

[0018] Furthermore, one end of the first sleeve portion is welded to one end of the first pipe, and the first sleeve portion and the first flange portion are integrally formed; one end of the second sleeve portion is welded to one end of the second pipe, and the second sleeve portion and the second flange portion are integrally formed.

[0019] Furthermore, the first flange is provided with a first recessed portion, the first recessed portion being located at the first opening, and the first sleeve is provided with a first protrusion that mates with the first recessed portion;

[0020] The second flange is provided with a second recess, which is located at the second opening, and the second sleeve is provided with a second protrusion that mates with the second recess.

[0021] Furthermore, the inner diameter d1 of the first sleeve is greater than or equal to 24.5 mm and less than or equal to 25.5 mm, and the diameter d2 of the first flange is greater than or equal to 114 mm and less than or equal to 116 mm.

[0022] Compared with the prior art, the pipeline connection structure provided in this application facilitates installation and disassembly by setting a first flange and a second flange, which are connected by bolts, in order to meet the needs of pipeline maintenance in the future. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in this application or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the pipe connection structure provided in the embodiments of this application;

[0025] Figure 2 for Figure 1 Enlarged view of circle A in the middle;

[0026] Figure 3 This is a schematic diagram of the structure of the first connector provided in an embodiment of this application;

[0027] Figure 4 for Figure 3 A cross-sectional view along the BB direction;

[0028] Figure 5 A cross-sectional view of a first connector provided in another embodiment of this application;

[0029] Figure 6 for Figure 5 Exploded view;

[0030] Figure 7 A cross-sectional view of a first connector provided in yet another embodiment of this application;

[0031] Figure 8 for Figure 7 The exploded diagram.

[0032] Figure Labels

[0033] 100. Pipe connection structure;

[0034] 10. First Pipeline;

[0035] 20. First connector; 21. First flange; 211. First opening; 212. First bolt hole; 213. First mounting groove; 214. First clearance portion; 215. First recessed portion; 22. First sleeve; 221. First sleeve portion; 222. First flanged portion; 2221. Water ripple area; 223. First arc transition portion; 224. First protrusion;

[0036] 30. Second pipeline;

[0037] 40. Second connector; 41. Second flange; 42. Second sleeve; 421. Second sleeve section; 422. Second flange section;

[0038] 50. Sealing components. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0040] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in the embodiments of this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0041] Electropolishing is a process that uses electrochemical principles to refine metal surfaces. By using the metal part as the anode and passing an electric current through a specific electrolyte, the microscopic protrusions on the workpiece surface are selectively dissolved, ultimately forming a smooth, bright, and clean surface. The polished surface created by electropolishing has a much lower roughness (Ra as low as 0.02-0.1 μm) compared to conventional polishing methods, resulting in extremely high pipe cleanliness. Therefore, it is widely used in the food and beverage industry, the pharmaceutical and biopharmaceutical industry, and the chemical and fine chemical industry.

[0042] Pipes whose inner walls have been electrolytically polished are typically fused together by melting the pipe joints at high temperatures, thus forming a permanent connection structure between the pipes. This structure offers advantages such as high sealing performance, no gaps or dead angles, and high cleanliness, making it suitable for industries with high requirements for hygiene conditions within the pipes, such as the food and pharmaceutical industries.

[0043] However, welded pipes are permanent connections and cannot be directly disassembled. When a pipe malfunctions and needs repair, the weld between the two pipes must be broken by mechanical cutting or grinding to separate them, which is time-consuming, labor-intensive, and not conducive to pipe maintenance.

[0044] Based on this, this application provides a pipe connection structure 100 that can be quickly installed or disassembled, thereby facilitating subsequent maintenance.

[0045] Please refer to Figures 1 to 8 As shown, a pipe connection structure 100 provided in this application includes: a first pipe 10, a first connector 20, a second pipe 30, and a second connector 40.

[0046] The first connector 20 includes a first flange 21 and a first sleeve 22. The first flange 21 has a first opening 211 and a plurality of first threaded holes 212. The first opening 211 passes through the first flange 21, and the first threaded holes 212 pass through the first flange 21 and are arranged around the first opening 211. One end of the first sleeve 22 passes through the first opening 211 and is connected to one end of the first pipe 10.

[0047] The second connector 40 includes a second flange 41 and a second sleeve 42. The second flange 41 has a second opening and a plurality of second threaded holes (not shown) that mate with the first threaded hole 212. The second opening passes through the second flange 41, and the second threaded holes pass through the second flange 41 and are arranged around the second opening. One end of the second sleeve 42 passes through the second opening and connects to one end of the second pipe 30, while the other end abuts against the end of the first sleeve 22 away from the first pipe 10. Bolts pass through the first threaded hole 212 and the second threaded holes to connect the first flange 21 and the second flange 41.

[0048] The inner walls of both the first pipe 10 and the second pipe 30 are provided with electrolytically polished surfaces. The inner walls of both the first sleeve 22 and the second sleeve 42 are provided with electrolytically polished surfaces.

[0049] The pipe connection structure 100 provided in this application connects the first pipe 10 and the second pipe 30 by setting a first flange 21 and a second flange 41, which are connected by bolts, so as to facilitate installation or disassembly and thus meet the subsequent maintenance needs of the first pipe 10 or the second pipe 30.

[0050] The first pipe 10 and the second pipe 30 described in this application can be pipes of the same size, length and other specifications made of the same material, or they can be two different pipes. This application does not limit them in this regard.

[0051] For example, the first pipe 10 may be a pipe made of 304 stainless steel or a pipe made of Hastelloy, etc., and this application does not limit it.

[0052] Similarly, the second pipe 30 is similar to the first pipe 10, and will not be described in detail here.

[0053] Preferably, in one embodiment of the pipe connection structure 100 provided in this application, the first sleeve 22 includes a first sleeve portion 221 and a first flange portion 222. One end of the first sleeve portion 221 passes through the first opening 211 and is connected to one end of the first pipe 10. The first flange portion 222 is disposed around the opposite end of the first sleeve portion 221 and extends in a direction perpendicular to the length direction of the first sleeve portion 221. One end face of the first flange portion 222 contacts the surface of the first flange 21.

[0054] The second sleeve 42 includes a second sleeve portion 421 and a second flange portion 422. One end of the second sleeve portion 421 passes through the second opening and is connected to one end of the second pipe 30. The second flange portion 422 is disposed around the opposite end of the second sleeve portion 421 and extends in a direction perpendicular to the length direction of the second sleeve portion 421. One end face of the second flange portion 422 abuts against the surface of the second flange 41, and the opposite end face contacts the end face of the first flange portion 222 away from the first flange 21.

[0055] The pipe connection structure 100 provided in this application achieves sealing by providing a first sleeve portion 221, a first flange portion 222, and a second sleeve portion 421 and a second flange portion 422 on the first sleeve 22 and the second sleeve 42, respectively. The first flange portion 222 and the second flange portion 422 are in contact with each other, thereby achieving good sealing performance. Simultaneously, by providing the first flange portion 222 and the second flange portion 422, which cooperate with the first flange 21 and the second flange 41, during installation… The first flange 21 and the second flange 41 can be adjusted to compensate for slight eccentricity or angular deviation during the installation of the first pipe 10 and the second pipe 30. This allows the pipe connection structure 100 provided in this application to be installed without precise alignment, reducing installation accuracy and improving installation efficiency. Finally, the first flange 222 and the second flange 422 can transmit the force of the first flange 21 and the second flange 41 to the first pipe 10 and the second pipe 30, thus protecting the first pipe 10 and the second pipe 30.

[0056] Preferably, in one embodiment of the pipe connection structure 100 provided in this application, the first flange 21 has a first mounting groove 213 on the side away from the first pipe 10. A first flange 222 is disposed in the first mounting groove 213. The second flange 41 has a second mounting groove (not shown) on the side away from the second pipe 30, and a second flange 422 is disposed in the second mounting groove.

[0057] The pipe connection structure 100 provided in this application provides a first mounting groove 213 and a second mounting groove, with a first flange 222 and a second flange 422 respectively disposed in the first mounting groove 213 and the second mounting groove. The first mounting groove 213 and the second mounting groove respectively form mechanical limits on the first flange 222 and the second flange 422, thereby fixing the axial and radial positions of the first flange 222 and the second flange 422. This prevents the first flange 222 and the second flange 422 from sliding or shifting relative to the first flange 21 and the second flange 41, or even falling off the first flange 21 and the second flange 41, due to vibration, pressure fluctuations, or media impact during operation.

[0058] The pipe connection structure 100 provided in this application has a first mounting groove 213 and a second mounting groove. The first mounting groove 213 and the second mounting groove can serve as guide structures when the pipe connection structure 100 is installed, so that the positions of the first flange 222 and the second flange 422 relative to the first flange 21 and the second flange 41 can be quickly positioned without repeatedly adjusting them, thereby improving the installation efficiency.

[0059] Preferably, in one embodiment of the pipe connection structure 100 provided in this application, a first arc transition portion 223 is provided at the connection between the first sleeve portion 221 and the first flange portion 222, and the first flange 21 is provided with a first clearance portion 214 that matches the first arc transition portion 223. A second arc transition portion (not shown) is provided at the connection between the second sleeve portion 421 and the second flange portion 422, and the second flange 41 is provided with a second clearance portion (not shown) that matches the second arc transition portion.

[0060] The pipe connection structure 100 provided in this application can reduce the connection stress between the first sleeve 22 and the first flange 222 and the second sleeve 42 and the second flange 422 by setting the first arc transition part 223 and the second arc transition part, thereby improving the stability of the pipe connection structure 100.

[0061] Preferably, in one embodiment of the pipe connection structure 100 provided in this application, the pipe connection structure 100 further includes a sealing component 50. The sealing component 50 is disposed between the first flange portion 222 and the second flange portion 422 to seal the first flange portion 222 and the second flange portion 422.

[0062] The pipe connection structure 100 provided in this application can improve the sealing performance between the first flange 222 and the second flange 422 by providing a sealing component 50 between the first flange 222 and the second flange 422, thereby preventing liquid leakage from the first pipe 10 and the second pipe 30 during use.

[0063] Optionally, in one embodiment of the pipe connection structure 100 provided in this application, the sealing component 50 may be a sealing gasket.

[0064] For example, the sealing gasket can be a rubber gasket, an asbestos gasket, or a stainless steel gasket, etc.

[0065] Optionally, in one embodiment of the pipe connection structure 100 provided in this application, the sealing component 50 may be an O-ring or a sealing strip.

[0066] Preferably, in this embodiment, the surfaces of the first flange portion 222 and the second flange portion 422 that abut against each other are provided with a water ripple area 2221 composed of water ripple lines, and the sealing component 50 is located within the water ripple area 2221.

[0067] The pipe connection structure 100 provided in this application provides a water ripple area 2221 on the first flange 222 and the second flange 422. The water ripple area 2221 can improve the sealing performance between the sealing component 50 and the first flange 222 and the second flange 422, reduce the phenomenon of slippage of the sealing component 50, and ensure the stability of the sealing position of the sealing component 50.

[0068] Optionally, in one embodiment of the pipe connection structure 100 provided in this application, one end of the first sleeve portion 221 is welded to one end of the first pipe 10, and the first sleeve portion 221 and the first flange portion 222 are integrally formed. One end of the second sleeve portion 421 is welded to one end of the second pipe 30, and the second sleeve portion 421 and the second flange portion 422 are integrally formed.

[0069] The pipe connection structure 100 provided in this application is connected by welding and integral molding, which is simple and convenient to install and has a stable structure.

[0070] Preferably, in one embodiment of the pipe connection structure 100 provided in this application, the first flange 21 is provided with a first recess 215, the first recess 215 is located at the first opening 211, and the first sleeve 22 is provided with a first protrusion 224 that cooperates with the first recess 215. When the first sleeve 22 is installed on the first flange 21, one end of the first sleeve 22 passes through the first opening 211, and the first protrusion 224 on the first sleeve 22 cooperates with the first recess 215 on the first flange 21, thereby installing the first sleeve 22 on the first flange 21.

[0071] The second flange 41 has a second recess (not shown) located at the second opening, and the second sleeve 42 has a second protrusion (not shown) that mates with the second recess. When the second sleeve 42 is installed on the second flange 41, one end of the second sleeve 42 passes through the second opening, and the second protrusion on the second sleeve 42 mates with the second recess on the second flange 41, thereby installing the first sleeve 22 onto the first flange 21.

[0072] The pipe connection structure 100 provided in this application improves the connection stability between the first flange 21 and the first sleeve 22 and the second flange 41 and the second sleeve 42 when the first flange 21 and the first sleeve 22 and the second flange 41 and the second sleeve 42 are connected by setting a first recess 215 and a first protrusion 224 and a second recess and a second protrusion that cooperate with each other, and prevents the first flange 21 and the first sleeve 22 and the second flange 41 and the second sleeve 42 from falling off during use due to vibration or impact.

[0073] Preferably, in one embodiment of the pipe connection structure 100 provided in this application, the inner diameter d1 of the first sleeve portion 221 is greater than or equal to 24.5 mm and less than or equal to 25.5 mm, and the inner diameter d1 of the first sleeve portion 221 is equal to the inner diameter of the first pipe 10. The diameter d2 of the first flange 21 is greater than or equal to 114 mm and less than or equal to 116 mm.

[0074] The pipe connection structure 100 provided in this application matches the specification requirements of the pipe connection structure 100 under different production needs by setting the inner diameter of the first sleeve 22 and the first pipe 10 and the diameter of the first flange 21.

[0075] For example, the inner diameters of the first sleeve 22 and the first pipe 10 can be 24.5, 24.7, 25.2, 25.5 mm, etc., and the diameter of the first flange 21 can be 114, 115, 116 mm, etc.

[0076] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this application (including the claims) is limited to these examples; many substitutions, modifications and variations of these embodiments will be apparent to those skilled in the art based on the foregoing description, and for the sake of brevity they are not provided in the details.

[0077] The embodiments of this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of this application should be included within the protection scope of this application.

Claims

1. A pipe connection structure, characterized in that, include: The first pipe has an electrolytically polished surface on its inner sidewall; The first connector includes a first flange and a first sleeve. The first flange has a first opening and a plurality of first screw holes. The first opening passes through the first flange, and the first screw holes pass through the first flange and are arranged around the first opening. One end of the first sleeve passes through the first opening and is connected to one end of the first pipe. The inner sidewall of the first sleeve has an electrolytically polished surface. The second pipe has an electrolytically polished surface on its inner wall; The second connector includes a second flange and a second sleeve. The second flange has a second opening and a plurality of second screw holes that mate with the first screw hole. The second opening passes through the second flange, and the second screw holes pass through the second flange and surround the second opening. One end of the second sleeve passes through the second opening and connects to one end of the second pipe, while the other end abuts against the end of the first sleeve away from the first pipe. Bolts pass through the first screw hole and the second screw hole to connect the first flange and the second flange. The inner wall of the second sleeve has an electrolytically polished surface.

2. The pipe connection structure according to claim 1, characterized in that, The first sleeve includes a first sleeve portion and a first flange portion. One end of the first sleeve portion passes through the first opening and is connected to one end of the first pipe. The first flange portion is arranged around the opposite end of the first sleeve portion and extends in a direction perpendicular to the length direction of the first sleeve portion. One end face of the first flange portion is in contact with the surface of the first flange. The second sleeve includes a second sleeve portion and a second flange portion. One end of the second sleeve portion passes through the second opening and is connected to one end of the second pipe. The second flange portion is disposed around the opposite end of the second sleeve portion and extends in a direction perpendicular to the length direction of the second sleeve portion. One end face of the second flange portion abuts against the surface of the second flange, and the opposite end face contacts the end face of the first flange portion away from the first flange.

3. The pipe connection structure according to claim 2, characterized in that, The pipe connection structure also includes a sealing component, which is disposed between the first flange and the second flange to seal the first flange and the second flange.

4. The pipe connection structure according to claim 3, characterized in that, The sealing assembly includes a sealing gasket.

5. The pipe connection structure according to claim 3, characterized in that, The surfaces of the first flange and the second flange that abut against each other are provided with water ripple lines, and the sealing component is located within the water ripple lines area.

6. The pipe connection structure according to claim 2, characterized in that, The first flange is provided with a first mounting groove on the side away from the first pipe, and the first flange portion is disposed in the first mounting groove; The second flange is provided with a second mounting groove on the side away from the second pipe, and the second flange is provided in the second mounting groove.

7. The pipe connection structure according to claim 2, characterized in that, The first sleeve portion and the first flange portion are provided with a first arc transition portion at the connection, and the first flange is provided with a first clearance portion that matches the first arc transition portion; the second sleeve portion and the second flange portion are provided with a second arc transition portion at the connection, and the second flange is provided with a second clearance portion that matches the second arc transition portion.

8. The pipe connection structure according to claim 2, characterized in that, One end of the first sleeve is welded to one end of the first pipe, and the first sleeve and the first flange are integrally formed; one end of the second sleeve is welded to one end of the second pipe, and the second sleeve and the second flange are integrally formed.

9. The pipe connection structure according to claim 1, characterized in that, The first flange is provided with a first recessed portion, which is located at the first opening, and the first sleeve is provided with a first protrusion that mates with the first recessed portion. The second flange is provided with a second recess, which is located at the second opening, and the second sleeve is provided with a second protrusion that mates with the second recess.

10. The pipe connection structure according to any one of claims 1-9, characterized in that, The inner diameter d1 of the first sleeve is greater than or equal to 24.5 mm and less than or equal to 25.5 mm, and the diameter d2 of the first flange is greater than or equal to 114 mm and less than or equal to 116 mm.

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