Chemical liquid transport pipelines and their joints

Abstract

To provide a chemical liquid transport pipeline capable of reducing damage and abrasion of the inner pipe of a double-layered pipe. [Solution] A chemical liquid transport pipeline comprising an inner liquid transport pipe, at least two outer impermeable pipes, and at least one fitting, wherein the outer impermeable pipes are respectively fitted onto the inner liquid transport pipe, and the fittings are connected to the outer impermeable pipes, and the fittings have a hollow pipe body, two outer pipe mounting wings provided at both ends of the hollow pipe body, and a plurality of positioning ribs provided at intervals within the hollow pipe body, the outer pipe mounting wings extending from the hollow pipe body and fitted onto one of the outer impermeable pipes, the positioning rib extending from the hollow pipe body and forming an inner pipe mounting hole, the inner pipe mounting holes of the positioning ribs being positioned on the same axis, the inner liquid transport pipe passing through the inner pipe mounting holes sequentially as it extends into the outer impermeable pipes, and basic positioning is determined by the positioning ribs.

Description

[Technical Field]

[0001] The present invention relates to a transportation pipeline and joints, and more particularly to a chemical liquid transportation pipeline and joints therefor. [Background technology]

[0002] Currently, major technology companies commonly use double-layer pipes to transport chemical liquids. In this embodiment, the inner pipe of the double-layer pipe transports the chemical liquid, and the outer pipe is fitted over the inner pipe to prevent the chemical liquid from accidentally leaking and entering the factory environment. Furthermore, due to the length limitations of the pipe material, the outer pipe is assembled with multiple pipes and fittings. One pipe is connected to each side of each fitting, and the multiple pipes are connected until the length meets environmental safety requirements.

[0003] However, in the above embodiment, the inner pipe is prone to contact with the outer pipe due to gravity acting on itself and the chemical solution inside. If the length of the inner pipe is set too long, the inner pipe will sag due to gravity acting on itself and the chemical solution inside, making it even more likely to contact the outer pipe. As the chemical solution flows through the inner pipe, the inner pipe is prone to vibrating and shaking due to the pressure of the chemical solution, causing constant friction between the inner pipe and the outer pipe. Over time, the inner pipe may wear out or burst, causing the chemical solution inside to accidentally leak, even affecting the safety of the factory environment.

[0004] To solve the above problems, Patent Document 1 provides a single positioning structure within the double-layered tube. However, a single positioning structure cannot reliably ensure the stability of the inner tube, and the inner tube is more likely to rub against the positioning structure due to the pressure of the chemical solution. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Taiwan Patent No. TWI644049 Specification Summary of the Invention [Problem to be solved by the invention]

[0006] The main purpose of the present invention is to solve the problem that the inner tube is easily damaged in the conventional double-layered tube embodiment.

[0007] Another object of the present invention is to solve the problem that the conventional double-layered pipe is implemented with a single positioning structure, which makes the inner pipe more susceptible to wear due to friction. [Means for solving the problem]

[0008] To achieve the above object, the present invention provides a chemical liquid transport pipeline including an inner liquid transport pipe, at least two outer impermeable pipes, and at least one fitting, wherein the outer impermeable pipes are respectively fitted onto the inner liquid transport pipe, and the fitting is connected to the outer impermeable pipes, the fitting having a hollow pipe body, two outer pipe mounting wings provided at both ends of the hollow pipe body, respectively, and a plurality of spaced apart positioning ribs provided within the hollow pipe body, the outer pipe mounting wings extending from the hollow pipe body and fitted onto one of the outer impermeable pipes, the positioning ribs extending from the hollow pipe body and forming an inner pipe mounting hole, the inner pipe mounting holes of the positioning ribs being aligned on the same axis, the inner liquid transport pipe passing through the inner pipe mounting holes in sequence as it extends into the outer impermeable pipes, and being basically positioned by the positioning ribs.

[0009] In one embodiment, the positioning rib portion has a positioning surface facing the inner tube mounting hole and contacting the inner liquid transport tube.

[0010] In one embodiment, the diameter of the hollow tube of the fitting is larger than the outer diameter of the impermeable outer tubes that fit thereto.

[0011] In one embodiment, the positioning rib has a limiting surface that faces one of the outer tube attachment wings and confines the impermeable outer tube to fit therewith.

[0012] In one embodiment, the inner diameter determined by the outer tube attachment wings is greater than the outer diameter of the impermeable outer tube that fits thereto.

[0013] In one embodiment, the inner diameter determined by the outer tube attachment wings is the same as the tube diameter of the hollow tube.

[0014] In one embodiment, a colloid-filled space is defined between the outer tube attachment wing and the mating impermeable outer tube.

[0015] The present invention further provides a joint for a chemical liquid transport pipeline, including a hollow pipe, two outer pipe mounting wings, and a plurality of positioning ribs, the two outer pipe mounting wings extending from the hollow pipe and positioned at opposite ends of the hollow pipe, the plurality of positioning ribs spaced apart within the hollow pipe, the plurality of positioning ribs extending from the hollow pipe and defining inner pipe mounting holes, the plurality of inner pipe mounting holes of the plurality of positioning ribs being aligned on the same axis.

[0016] In one embodiment, the positioning rib portion has a positioning surface facing the inner pipe mounting hole.

[0017] In one embodiment, the positioning rib has a limiting surface facing one of the outer tube mounting wings.

[0018] In one embodiment, the inner diameter determined by the outer tube attachment wings is the same as the tube diameter of the hollow tube.

[0019] In one embodiment, the outer tube attachment wing defines a colloid-filled space. [Effects of the Invention]

[0020] The present invention, implemented as described above, has the following advantages over the prior art: The present invention connects two impermeable outer pipes with a joint, the joint having a plurality of outer pipe mounting wings and a plurality of positioning ribs, the plurality of inner pipe mounting holes of the positioning ribs being aligned on the same axis, the inner liquid transport pipe extending between the two impermeable outer pipes, passing through the plurality of inner pipe mounting holes in sequence as it passes through the joint, and the basic positioning is provided by the plurality of positioning ribs, thereby preventing the inner liquid transport pipe from rubbing against the plurality of impermeable outer pipes, which would cause damage or leakage of the inner liquid transport pipe. [Brief explanation of the drawings]

[0021] [Figure 1] 1 is a schematic diagram of a chemical liquid transport pipeline according to an embodiment of the present invention, which is implemented in combination with a liquid device and operating equipment. [Figure 2] 1 is a partial cross-sectional view of a chemical liquid transport pipeline according to an embodiment of the present invention; [Figure 3] 1 is a partial cross-sectional exploded view of a chemical liquid transport pipeline according to an embodiment of the present invention; [Figure 4] 3 is a cross-sectional view of a chemical liquid transport pipeline according to an embodiment of the present invention in another direction; FIG. [Figure 5] 1 is a cross-sectional view of a joint according to an embodiment of the present invention; DETAILED DESCRIPTION OF THE INVENTION

[0022] The technical contents of the present invention will be described in detail below with reference to the drawings. 1 , the present invention provides a chemical liquid transport pipeline 20, which is connected to at least one liquid device and at least one work facility 30 and transports chemical liquid between the liquid device and the work facility 30. The chemical liquid referred to in this specification may be a hydraulic fluid required for the work facility 30 to operate, or a waste liquid discharged by the work facility 30. In one embodiment, when the liquid device is a liquid supply device 40, the chemical liquid transport pipeline 20 transports hydraulic fluid from the liquid supply device 40 to the work facility 30. In another embodiment, when the liquid device is a waste liquid storage device 50, the chemical liquid transport pipeline 20 transports waste liquid discharged by the work facility 30 to the waste liquid storage device 50.

[0023] 2 to 5, the chemical liquid transport pipeline 20 includes an inner liquid transport pipe 21, at least two impermeable outer pipes 22, and at least one joint 23. The chemical liquid flows through the inner liquid transport pipe 21, and the plurality of impermeable outer pipes 22 are fitted onto the inner liquid transport pipe 21, respectively, to protect the inner liquid transport pipe 21 and prevent the chemical liquid in the inner liquid transport pipe 21 from accidentally leaking.

[0024] Each joint 23 is provided between two impermeable outer pipes 22 and is used to connect the two impermeable outer pipes 22. Each joint 23 has a hollow pipe 231, two outer pipe mounting wings 232, and a plurality of positioning ribs 233, of which the plurality of outer pipe mounting wings 232 are provided at both ends of the hollow pipe 231, respectively, and connected to one of the impermeable outer pipes 22, and each outer pipe mounting wing 232 extends from the hollow pipe 231 and is fitted onto one of the impermeable outer pipes 22. The plurality of positioning ribs 233 are provided in the hollow pipe 231 at intervals, each positioning rib 233 extends from the hollow pipe 231 and forms an inner pipe mounting hole 234, and the plurality of inner pipe mounting holes 234 of the plurality of positioning ribs 233 are positioned on the same axis 235, as shown in FIG. 2 .

[0025] When assembling the chemical liquid transport pipeline 20, one of the impermeable outer pipes 22 is first assembled to one of the outer pipe mounting wings 232 of the fittings 23, and then the inner liquid transport pipe 21 is passed through one of the impermeable outer pipes 22 and the fitting 23. After the inner liquid transport pipe 21 has entered the impermeable outer pipe 22 and the fitting 23, another impermeable outer pipe 22 is assembled to the other outer pipe mounting wing 232 of the fitting 23. Upon completion of assembly, the inner liquid transport pipe 21 extends within the two impermeable outer pipes 22 and passes through the multiple inner pipe mounting holes 234 in sequence, with the multiple positioning ribs 233 providing the basic positioning for the inner liquid transport pipe 21, which maintains a distance 236 between the inner liquid transport pipe 21 and the multiple impermeable outer pipes 22.

[0026] As can be seen from the above, in the present invention, the inner liquid transport pipe 21 is installed within the plurality of inner pipe mounting holes 234 of the plurality of positioning ribs 233, and the plurality of positioning ribs 233 provide basic positioning, thereby maintaining a distance 236 between the inner liquid transport pipe 21 and the plurality of impermeable outer pipes 22, preventing the inner liquid transport pipe 21 from rubbing against the plurality of impermeable outer pipes 22 due to gravity and liquid pressure, and further reducing leakage due to wear of the inner liquid transport pipe 21. However, while the conventional double-walled pipe embodiment uses a single positioning structure, this structure does not reliably ensure the stability of the inner pipe, making the inner pipe more susceptible to friction against the positioning structure due to the pressure of the chemical liquid. Furthermore, although the above description and drawings in this specification only partially illustrate the chemical liquid transport pipeline 20, in practice, the chemical liquid transport pipeline 20 can also be formed by combining a plurality of impermeable outer pipes 22 and a plurality of fittings 23 based on the pipeline route design between the liquid device and the working equipment 30.

[0027] 2 to 5, in one embodiment, each positioning rib portion 233 has a positioning surface 237, which faces the inner tube mounting hole 234. When the inner liquid transport tube 21 passes through the inner tube mounting hole 234, the positioning surface 237 contacts the inner liquid transport tube 21 and limits the position of the inner liquid transport tube 21.

[0028] Furthermore, in one embodiment, the pipe diameter 238 of the hollow tube 231 of each fitting 23 is larger than the outer diameter 222 of the plurality of impermeable outer tubes 22 that fit thereto. In another embodiment, each positioning rib portion 233 also positions the plurality of impermeable outer tubes 22, and each positioning rib portion 233 has a limiting surface 239 that faces one of the outer tube mounting wings 232 and contacts the corresponding impermeable outer tube 22, and the limiting surface 239 is used to limit the assembly position of the corresponding impermeable outer tube 22.

[0029] In one embodiment, the inner diameter 240 defined by each outer tube mounting wing 232 is larger than the outer diameter 222 of the corresponding impermeable outer tube 22, thereby fitting each outer tube mounting wing 232 over the corresponding impermeable outer tube 22. In another embodiment, a colloid-filled space 241 is defined between each outer tube mounting wing 232 and the corresponding impermeable outer tube 22, and the colloid-filled space 241 is used to inject at least one colloid therein to bond the outer tube mounting wing 232 and the corresponding impermeable outer tube 22. In another embodiment, the inner diameter 240 defined by each outer tube mounting wing 232 is the same as the tube diameter 238 of the hollow tube 231. [Explanation of symbols]

[0030] 20. Chemical Liquid Transport Pipeline 21 Liquid transport inner pipe 22 Impermeable outer tube 222 outer diameter 23 Joints 231 Hollow tube 232 Outer tube mounting wing 233 Positioning rib 234 Inner pipe mounting hole 235 axis 236 distance 237 Locating Surface 238 Pipe diameter 239 Restricted Surface 240 Inner diameter 241 Colloid-filled space 30 Work Equipment 40 Liquid supply device 50 Waste liquid storage device

Claims

1. 1. A chemical liquid transport pipeline, comprising: a liquid transport inner pipe; at least two impermeable outer tubes, each of the plurality of impermeable outer tubes fitted onto the liquid transport inner tube; at least one coupling, said coupling being connected to a plurality of said impermeable outer pipes, said coupling comprising a hollow pipe, two outer pipe mounting wings provided at both ends of said hollow pipe, respectively, and a plurality of positioning ribs provided within said hollow pipe at intervals, said outer pipe mounting wings extending from said hollow pipe and fitted onto one of said plurality of impermeable outer pipes, said positioning rib extending from said hollow pipe and defining an inner pipe mounting hole, said plurality of inner pipe mounting holes of said plurality of positioning ribs being positioned on the same axis, said inner liquid transport pipe passing through said plurality of inner pipe mounting holes sequentially as it extends into said plurality of impermeable outer pipes, and said plurality of positioning ribs being used for basic positioning of said coupling; A chemical liquid transport pipeline comprising:

2. 2. The chemical liquid transportation pipeline according to claim 1, wherein the positioning rib portion has a positioning surface facing the inner pipe mounting hole and contacting the inner liquid transportation pipe.

3. 3. A chemical liquid transportation pipeline according to claim 1, wherein the diameter of the hollow pipe of the joint is larger than the outer diameter of the plurality of impermeable outer pipes that fit thereto.

4. 4. The chemical liquid transportation pipeline of claim 3, wherein the positioning rib portion has a limiting surface facing one of the outer pipe attachment wings and limiting the impermeable outer pipe that fits thereto.

5. 5. The chemical liquid transportation pipeline of claim 4, wherein the inner diameter determined by said outer pipe fitting wing is greater than the outer diameter of said impermeable outer pipe that fits thereto.

6. 6. The chemical liquid transportation pipeline according to claim 5, wherein the inner diameter determined by the outer pipe attachment wing portion is the same as the pipe diameter of the hollow pipe body.

7. 7. The chemical liquid transportation pipeline of claim 6, wherein a colloid-filled space is defined between the outer pipe attachment wing and the mating impermeable outer pipe.

8. A joint for a chemical liquid transport pipeline, comprising: A hollow tube body; two outer pipe attachment wings extending from the hollow pipe and positioned at both ends of the hollow pipe; a plurality of positioning ribs provided at intervals within the hollow tube, the positioning ribs extending from the hollow tube and defining inner pipe mounting holes, the inner pipe mounting holes of the positioning ribs being aligned on the same axis; A joint for a pipeline for transporting chemical liquids, comprising:

9. 9. The joint for a chemical liquid transportation pipeline according to claim 8, wherein the positioning rib portion has a positioning surface facing the inner pipe mounting hole.

10. 10. The chemical liquid transportation pipeline coupling of claim 9, wherein the positioning rib portion has a limiting surface facing one of the outer pipe mounting wings.

11. 11. The chemical liquid transportation pipeline joint according to claim 10, wherein the inner diameter determined by the outer pipe attachment wing portion is the same as the pipe diameter of the hollow pipe body.

12. 12. The chemical liquid transportation pipeline coupling of claim 11, wherein the outer pipe fitting wing defines a colloid-filled space.

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