A safe and leakproof double-layer pipeline for chemical liquid transportation

Abstract

The utility model discloses a safe and leak-proof double-layer pipeline for conveying chemical liquids. An outer cylinder is coaxially arranged outside an inner cylinder, the inner wall of the outer cylinder is supported on the outside of the inner cylinder by a supporting rod, pipeline flanges are arranged at both ends of the inner cylinder, a sleeve is arranged at one end of the pipeline flange, a groove is opened on the inner wall of the sleeve and a sealing ring is arranged in the groove, the sleeve is sleeved on the end of the outer cylinder, a leakage outlet is arranged at the middle position of the lower surface of the outer cylinder, the leakage outlet is connected to a connecting cylinder, and a water immersion sensor is arranged inside the connecting cylinder. The utility model has a reasonable structure. When the inner cylinder is corroded and a leakage point appears, the liquid flows into the cavity between the outer cylinder and the inner cylinder, and then is discharged from the leakage outlet. At the same time, a leakage signal is obtained through the water immersion sensor in the connecting cylinder. On the one hand, it is prevented that the chemical liquid directly leaks out of the pipeline, and the safety is greatly improved. On the other hand, the specific leaking pipeline can be quickly judged.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline leakage prevention, in particular to a safe and leak-proof double-layer pipeline for chemical liquid transportation. Background Art

[0002] A pipeline is a device connected by pipes, pipe connectors and valves for transporting gas, liquid or fluid with solid particles. Chemical pipelines are mainly used for transporting chemical liquids or gases.

[0003] Chemical production safety is a key issue. Chemical liquid transportation pipelines are prone to corrosion and leakage during long-term use. Once chemical liquid leaks directly out of the pipeline, it will pollute the environment, cause harm to humans and animals, and even some chemical liquids will have the risk of explosion. Traditional chemical pipelines need to be inspected and replaced regularly, but there is still a risk of leakage. Therefore, an improved technology is urgently needed to solve this problem in the existing technology. Utility Model Content

[0004] The purpose of the utility model is to provide a safe and leak-proof double-layer pipeline for conveying chemical liquids. The outer cylinder is supported by a support rod on the outside of the inner cylinder, and a cavity is formed between the outer cylinder and the inner cylinder. When the inner cylinder is corroded and a leak occurs, the liquid flows into the cavity between the outer cylinder and the inner cylinder, and then is discharged from the leakage outlet. At the same time, a leakage signal is obtained by connecting a water immersion sensor in the cylinder. On the one hand, the chemical liquid is prevented from directly leaking out of the pipeline, thereby causing environmental pollution or damage to the human body, and the safety is greatly improved. On the other hand, the specific leaking pipeline can be quickly determined, which is convenient for investigation, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a safe and leak-proof double-layer pipeline for chemical liquid transportation, comprising an inner cylinder, an outer cylinder, a support rod, a pipeline flange, a connecting cylinder and a water immersion sensor, wherein the outer cylinder is coaxially arranged on the outside of the inner cylinder, a positioning guide groove is opened on the outer surface of the inner cylinder and along the length direction, a plurality of support rods are arranged on the inner wall of the outer cylinder, a positioning extension rod is also arranged at the inner end of the support rod, the positioning extension rod is slidably matched with the positioning guide groove, the inner end of the support rod is supported on the outer surface of the inner cylinder, pipeline flanges are arranged at both ends of the inner cylinder, a sleeve is arranged at one end of the pipeline flange, a groove is opened on the inner wall of the sleeve and a sealing ring is arranged in the groove, the sleeve is sleeved on the end of the outer cylinder, the sealing ring is tightly matched with the outer surface of the outer cylinder, a leakage discharge outlet is arranged in the middle position of the lower surface of the outer cylinder, the leakage discharge outlet is connected with the connecting cylinder, and a water immersion sensor is arranged inside the connecting cylinder.

[0006] Preferably, the utility model provides a safe and leakproof double-layer pipeline for conveying chemical liquids, wherein the diameter of the support rod is greater than the width of the positioning guide groove.

[0007] Preferably, the utility model provides a safe and leakproof double-layer pipeline for transporting chemical liquids, wherein the pipeline flange is connected to the inner cylinder by welding.

[0008] Preferably, the utility model provides a safe and leakproof double-layer pipeline for conveying chemical liquids, wherein connecting flanges are provided at both ends of the connecting tube, and the connecting tube is connected to the leakage outlet through the connecting flanges.

[0009] Preferably, the utility model provides a safe and leakproof double-layer pipeline for conveying chemical liquids, wherein the sum of the outer diameter of the inner cylinder plus the length of the two support rods is equal to the inner diameter of the outer cylinder.

[0010] Preferably, the utility model provides a safe and leakproof double-layer pipeline for conveying chemical liquids, wherein the lengths of the inner cylinder and the outer cylinder are consistent.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] (1) The outer cylinder is supported by a support rod outside the inner cylinder, and a cavity is formed between the outer cylinder and the inner cylinder. When the inner cylinder is corroded and a leak occurs, the liquid flows into the cavity between the outer cylinder and the inner cylinder, and then is discharged from the leakage outlet. At the same time, a leakage signal is obtained through the water immersion sensor in the connecting cylinder. On the one hand, it prevents the chemical liquid from directly leaking out of the pipeline, thereby causing environmental pollution or harm to the human body, and greatly improves safety. On the other hand, the specific leaking pipeline can be quickly identified for easy investigation.

[0013] (2) The sleeve of the pipe flange and the inner sealing ring cooperate with the end of the outer cylinder to ensure the sealing of the end of the outer cylinder and improve the stability of the outer cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model at the end;

[0017] Figure 4 It is a schematic diagram of the cross-sectional structure of the utility model;

[0018] Figure 5 Schematic diagram of the inner cylinder structure.

[0019] In the figure: inner cylinder 1, outer cylinder 2, support rod 3, pipe flange 4, connecting cylinder 5, water immersion sensor 6, positioning guide groove 7, positioning extension rod 8, sleeve 9, sealing ring 10, leakage discharge port 11, connecting flange 12. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model;

[0021] It should be noted that, in the description of the present invention, the terms "inside", "outside", "upper", "lower", "both sides", "one end", "the other end", "left" and "right" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0022] See also Figure 1-5The utility model provides a technical solution: a safe and leak-proof double-layer pipeline for chemical liquid transportation, comprising an inner cylinder 1, an outer cylinder 2, a support rod 3, a pipeline flange 4, a connecting cylinder 5 and a water immersion sensor 6. The outer cylinder 2 is coaxially arranged on the outside of the inner cylinder 1. The lengths of the inner cylinder 1 and the outer cylinder 2 are consistent to ensure that the outer cylinder 2 will not undergo axial displacement when the pipeline flange 4 is welded. A positioning guide groove 7 is provided on the outer surface of the inner cylinder 1 and along the length direction. A plurality of support rods 3 are provided on the inner wall of the outer cylinder 2. A positioning extension rod 8 is also provided at the inner end of the support rod 3. The positioning extension rod 8 is slidably matched with the positioning guide groove 7. The inner end of the support rod 3 is supported on the outer surface of the inner cylinder 1. The diameter of the support rod 3 is greater than the width of the positioning guide groove 7 to ensure that the support rod 3 will not enter the positioning guide groove 7 when the positioning extension rod 8 is located in the positioning guide groove 7, so that the inner end of the support rod 3 can be supported on the outer surface of the inner cylinder 1. , pipe flanges 4 are provided at both ends of the inner cylinder 1, and the pipe flanges 4 are connected to the inner cylinder 1 by welding to realize the installation of the outer cylinder 2, the outer diameter of the inner cylinder 1 plus the length of the two support rods 3 is equal to the inner diameter of the outer cylinder 2, so as to ensure that the outer cylinder 2 can be stably supported on the outside of the inner cylinder 1 through the support rods 3, a sleeve 9 is provided at one end of the pipe flange 4, a groove is provided on the inner wall of the sleeve 9, and a sealing ring 10 is provided in the groove, the sleeve 9 is sleeved on the end of the outer cylinder 2, the sealing ring 10 is tightly matched with the outer surface of the outer cylinder 2, a leakage outlet 11 is provided in the middle position of the lower surface of the outer cylinder 2, the leakage outlet 11 is connected to a connecting tube 5, connecting flanges 12 are provided at both ends of the connecting tube 5, the connecting tube 5 is connected to the leakage outlet 11 through the connecting flanges 12, so as to realize the connection between the connecting tube 5 and the leakage outlet 11, and a water immersion sensor 6 is provided inside the connecting tube 5.

[0023] Assembly method and use principle: First, make the inner cylinder 1 and the outer cylinder 2 of equal length, weld the leakage outlet 11 in the middle of the outer cylinder 2, and weld or bolt the support rod 3 with the positioning extension rod 8 at one end to the corresponding position of the inner surface of the outer cylinder 2, and open the positioning guide groove 7 at the front length of the outer surface of the inner cylinder 1. First, put the outer cylinder 2 on the outside of the inner cylinder 1, and insert the positioning extension rod 8 at the end of the support rod 3 into the corresponding positioning guide groove 7. The positioning extension rod 8 of the support rod 3 cooperates with the positioning guide groove 7 of the inner cylinder 1 to prevent the outer cylinder 2 from rotating, so as to ensure that the leakage outlet 11 faces downward, then place the sealing ring 10 in the groove of the sleeve 9 at one end of the pipe flange 4, and sleeve the sleeve 9 of the pipe flange 4 with the outer cylinder 2, and connect the inner ring of the pipe flange 4 to the end of the inner cylinder 1 by welding, and finally connect the connecting cylinder 5 with the water immersion sensor 6 to the leakage outlet 11 through the connecting flange 12 to complete the assembly. When in use, the two pipes are connected by the pipe flange 4, and the connecting tube 5 is also connected to the external pipe, and the other end of the external pipe is connected to the sealed temporary storage tube. When the inner cylinder 1 is corroded and leaks after long-term use, the liquid flows into the space between the outer cylinder 2 and the inner cylinder 1, and then is discharged from the leakage outlet 11. When the leaked liquid contacts the electrode surface of the water immersion sensor 6, the sensor resistance changes, and the signal is amplified and processed, thereby obtaining a leakage signal. The utility model has a reasonable structure. The outer cylinder 2 is supported by the support rod 3 outside the inner cylinder 1, and a cavity is formed between the outer cylinder 2 and the inner cylinder 1. When the inner cylinder 1 is corroded and a leak occurs, the liquid flows into the cavity between the outer cylinder 2 and the inner cylinder 1, and then is discharged from the leakage outlet 11. At the same time, a leakage signal is obtained through the water immersion sensor 6 in the connecting cylinder 5. On the one hand, it prevents the chemical liquid from directly leaking out of the pipeline, thereby causing environmental pollution or damage to the human body, and the safety is greatly improved. On the other hand, the specific leaking pipeline can be quickly determined, which is convenient for investigation. Finally, the sleeve 9 of the pipeline flange 4 and the inner sealing ring 10 cooperate with the end of the outer cylinder 2 to ensure the sealing of the end of the outer cylinder 2 while improving the stability of the outer cylinder 2.

[0024] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

[0025] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified and replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A safe and leakproof double-layer pipeline for chemical liquid transportation, characterized by: The invention comprises an inner cylinder (1), an outer cylinder (2), a support rod (3), a pipe flange (4), a connecting cylinder (5) and a water immersion sensor (6); the outer cylinder (2) is coaxially arranged outside the inner cylinder (1); a positioning guide groove (7) is provided on the outer surface of the inner cylinder (1) and along the length direction; a plurality of support rods (3) are arranged on the inner wall of the outer cylinder (2); a positioning extension rod (8) is also arranged at the inner end of the support rod (3); the positioning extension rod (8) is slidably matched with the positioning guide groove (7); the inner end of the support rod (3) is supported on the outer surface of the inner cylinder (1); Pipe flanges (4) are provided at both ends of the inner cylinder (1), a sleeve (9) is provided at one end of the pipe flange (4), a groove is provided on the inner wall of the sleeve (9) and a sealing ring (10) is provided in the groove, the sleeve (9) is sleeved on the end of the outer cylinder (2), the sealing ring (10) is tightly matched with the outer surface of the outer cylinder (2), a liquid leakage outlet (11) is provided in the middle position of the lower surface of the outer cylinder (2), the liquid leakage outlet (11) is connected to a connecting cylinder (5), and a water immersion sensor (6) is provided inside the connecting cylinder (5).

2. A safe and leakproof double-layer pipeline for chemical liquid transportation according to claim 1, characterized in that: The diameter of the support rod (3) is greater than the width of the positioning guide groove (7).

3. The safe and leakproof double-layer pipeline for chemical liquid transportation according to claim 1 is characterized by: The pipeline flange (4) is connected to the inner cylinder (1) by welding.

4. The safe and leakproof double-layer pipeline for chemical liquid transportation according to claim 1 is characterized by: Connecting flanges (12) are provided at both ends of the connecting tube (5), and the connecting tube (5) is connected to the leakage discharge port (11) via the connecting flanges (12).

5. The safe and leakproof double-layer pipeline for chemical liquid transportation according to claim 1 is characterized by: The sum of the outer diameter of the inner cylinder (1) and the length of the two support rods (3) is equal to the inner diameter of the outer cylinder (2).

6. The safe and leakproof double-layer pipeline for chemical liquid transportation according to claim 1 is characterized by: The inner cylinder (1) and the outer cylinder (2) have the same length.

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