Leakage-proof sealing structure of thermal insulation pipe

Abstract

The utility model relates to the technical field of thermal insulation pipes, and discloses a leakage-proof sealing structure of a thermal insulation pipe, which comprises a pipe outer wall, and one end of the pipe outer wall is fixedly connected with a first connecting block. According to the utility model, the annular bulge and the annular groove as well as the small sealing ring and the large sealing ring are matched to seal the joint of a plurality of groups of thermal insulation pipes, after the second fixing block is aligned with the first fixing block, one end of the locking block is inserted into the second fixing block, and the locking block is fixed on the first fixing block through the two groups of bolts, the first gasket and the hexagonal nut; after a hexagonal nut is locked, a hexagonal threaded rod is matched with a second gasket to rotate into a threaded hole and is matched with a locking block to fix a second connecting block and a first connecting block, four sets of first fixing blocks and second fixing blocks are assembled in sequence, and the head and the tail of a lining pipe in a heat preservation pipe are also tightly squeezed through fixing of the first connecting blocks and the second connecting blocks; and the joints of the plurality of groups of thermal insulation pipes are sealed in cooperation with the large sealing rings and the small sealing rings.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal insulation pipes, in particular to a leak-proof sealing structure of a thermal insulation pipe. Background Art

[0002] Insulated pipes are widely used in situations where thermal insulation is required, such as central heating systems: urban or regional central heating networks, transporting hot water or steam, oil and gas industries: transporting oil, gas and other media, especially when heat loss needs to be prevented, chemical industry: transporting chemical materials that need to be kept warm or cold, such as liquid chemicals, gases, etc.

[0003] Most of the common insulation pipes on the market have the following defects: insufficient sealing. Insulation pipes that are not sealed well will cause heat loss. If there is a leak in the internal pipeline, the heat will flow out and pollute the environment. The outer wall of the insulation pipe has poor wear resistance and weak impact resistance. During pipeline transportation, it is inevitable that the outer layer of the insulation pipe will be frequently rubbed, and in severe cases, it may suffer from external impact. Therefore, the utility model proposes a leak-proof sealing structure for the insulation pipe to solve the problems existing in the prior art. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a leak-proof sealing structure for a thermal insulation pipe.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a leakage-proof sealing structure of an insulation pipe, comprising an outer wall of the pipe, one end of the outer wall of the pipe is fixedly connected to a first connecting block, and the other end of the outer wall of the pipe is fixedly connected to a second connecting block, the first connecting block is fixedly connected to the first fixing block, a locking block is slidably connected to the first fixing block, a bolt is slidably connected to the locking block, one end of the bolt is threadedly connected to the first fixing block, a first gasket is slidably connected to the bolt, a hexagonal nut is threadedly connected to the bolt, one end of the locking block is provided with a threaded hole, the second connecting block is fixedly connected to the second fixing block, a hexagonal threaded rod is slidably connected to the second fixing block, a second gasket is slidably connected to the hexagonal threaded rod, an inner liner pipe is fixedly connected to the outer wall of the pipe, one end of the inner liner pipe is provided with an annular platform, an annular protrusion is provided on the annular platform, an annular groove is provided on the other end of the inner liner pipe, a small sealing ring is provided on the annular protrusion, and a large sealing ring is provided on the annular platform.

[0006] As a further description of the above technical solution:

[0007] The outer wall of the pipe is provided with a buffer layer, a heat-insulating layer and a wear-resistant layer in sequence from the inside to the outside.

[0008] As a further description of the above technical solution:

[0009] The inner lining pipe is provided with a corrosion-resistant layer and a waterproof layer in sequence from the inside to the outside.

[0010] As a further description of the above technical solution:

[0011] The bolts are provided in two groups and are symmetrically distributed on the locking block. The locking block is T-shaped. The longer end of the locking block slides in the second fixed block. One end of the hexagonal threaded rod is threadedly connected in the threaded hole. The annular protrusion is located in the annular groove. The small sealing ring and the large sealing ring are located between the annular protrusion and the annular groove.

[0012] As a further description of the above technical solution:

[0013] The length of the liner pipe is greater than the outer wall of the pipe, and the first fixing blocks are provided in four groups and are evenly distributed on the second connecting block.

[0014] As a further description of the above technical solution:

[0015] The material of the wear-resistant layer is polyethylene resin, which has good chemical stability, wear resistance and certain corrosion resistance. The material of the thermal insulation layer is rock wool, which has low thermal conductivity and is a good thermal insulation material. The material of the buffer layer is rubber material, which has good resilience and helps to buffer impact.

[0016] As a further description of the above technical solution:

[0017] The material of the waterproof layer is polyvinyl chloride, which has low cost and is waterproof while also having certain corrosion resistance. The material of the corrosion-resistant layer is epoxy resin, and the cured epoxy resin has high mechanical strength and strong temperature resistance.

[0018] The utility model has the following beneficial effects:

[0019] 1. In the utility model, the joints of multiple groups of thermal insulation pipes are sealed by the cooperation of the annular protrusion and the annular groove, the small sealing ring and the large sealing ring. After the second fixing block is aligned with the first fixing block, one end of the locking block is inserted into the second fixing block, and the locking block is fixed to the first fixing block by two groups of bolts, the first gasket and the hexagonal nut. After the hexagonal nut is locked, the hexagonal threaded rod is cooperated with the second gasket to rotate into the threaded hole, and the second connecting block is fixed to the first connecting block in cooperation with the locking block. The four groups of first fixing blocks and second fixing blocks are assembled in turn. Through the fixation of the first connecting block and the second connecting block, the inner lining pipe in the thermal insulation pipe is also squeezed tightly against each other at the head and tail, and the joints of multiple groups of thermal insulation pipes are sealed by cooperation with the large sealing ring and the small sealing ring.

[0020] 2. The utility model realizes multiple functions of the thermal insulation pipe, such as wear resistance, impact resistance, heat preservation, and leakage prevention. The outermost wear-resistant layer protects the thermal insulation pipe from external friction, reduces damage caused by wear, and extends the service life of the thermal insulation pipe. The thermal insulation layer locks the temperature of the pipe inside the liner pipe to reduce heat exchange with the external environment, thereby achieving a good thermal insulation effect. When the outside of the thermal insulation pipe is subjected to impact force, the buffer layer can buffer the external force, unload the force, and better protect the internal pipe. When the pipe inside the liner pipe leaks, the corrosion-resistant layer can firstly prevent the leaked liquid from corroding the thermal insulation pipe, and secondly, the setting of the waterproof layer prevents the internal liquid from leaking out to the outside of the liner pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural schematic diagram of a leak-proof sealing structure of a thermal insulation pipe proposed by the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the two ends of the liner pipe of the leak-proof sealing structure of the thermal insulation pipe proposed by the utility model;

[0023] Figure 3 A schematic diagram of the partial structure of a leak-proof sealing structure of a thermal insulation pipe proposed by the utility model;

[0024] Figure 4 A schematic diagram of the internal structure of the outer wall of a thermal insulation pipe with a leak-proof sealing structure proposed by the utility model;

[0025] Figure 5 The utility model provides a schematic diagram of the internal structure of the liner pipe of the leak-proof sealing structure of the thermal insulation pipe.

[0026] Legend:

[0027] 1. Outer wall of the pipe; 2. Liner pipe; 3. Annular protrusion; 4. Annular groove; 5. First connecting block; 6. First fixing block; 7. Locking block; 8. Buffer layer; 9. Bolt; 10. First gasket; 11. Hexagonal nut; 12. Threaded hole; 13. Second connecting block; 14. Second fixing block; 15. Hexagonal threaded rod; 16. Second gasket; 17. Insulation layer; 18. Small sealing ring; 19. Large sealing ring; 20. Annular platform; 21. Corrosion-resistant layer; 22. Waterproof layer; 23. Wear-resistant layer. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0029] Reference Figure 1-Figure 5 The utility model provides an embodiment: a leakproof sealing structure of an insulation pipe, comprising a pipe outer wall 1, one end of the pipe outer wall 1 is fixedly connected to a first connecting block 5, the other end of the pipe outer wall 1 is fixedly connected to a second connecting block 13, the first connecting block 5 is fixedly connected to a first fixing block 6, a locking block 7 is slidably connected in the first fixing block 6, a bolt 9 is slidably connected in the locking block 7, one end of the bolt 9 is threadedly connected in the first fixing block 6, a first gasket 10 is slidably connected on the bolt 9, and a hexagonal Nut 11, one end of the locking block 7 is provided with a threaded hole 12, the second connecting block 13 is fixedly connected to the second fixing block 14, a hexagonal threaded rod 15 slides in the second fixing block 14, and a second gasket 16 slides on the hexagonal threaded rod 15, an inner liner tube 2 is fixedly connected to the outer wall 1 of the tube, an annular platform 20 is provided at one end of the inner liner tube 2, an annular protrusion 3 is provided on the annular platform 20, an annular groove 4 is provided on the other end of the inner liner tube 2, a small sealing ring 18 is provided on the annular protrusion 3, and a large sealing ring 19 is provided on the annular platform 20.

[0030] The outer wall 1 of the pipe is provided with a buffer layer 8, an insulation layer 17, and a wear-resistant layer 23 in sequence from the inside to the outside, and the inner liner 2 is provided with a corrosion-resistant layer 21 and a waterproof layer 22 in sequence from the inside to the outside. The bolts 9 are provided in two groups and are symmetrically distributed on the locking block 7. The locking block 7 is in a T-shape. The longer end of the locking block 7 slides in the second fixing block 14. One end of the hexagonal threaded rod 15 is threadedly connected in the threaded hole 12. The annular protrusion 3 is located in the annular groove 4. The small sealing ring 18 and the large sealing ring 19 are located between the annular protrusion 3 and the annular groove 4. The length of the inner liner 2 is greater than the outer wall 1 of the pipe. The first fixing block 6 is provided with four groups and is evenly distributed on the second connecting block 13. The material of the wear-resistant layer 23 is polyethylene resin. Polyethylene resin is lightweight, wear-resistant and corrosion-resistant, avoiding the changeable external environment The material of the insulation layer 17 is rock wool, which is a highly efficient thermal insulation material with low thermal conductivity, fire resistance and non-combustibility. At the same time, rock wool is made of natural rock and is an environmentally friendly material. The material of the buffer layer 8 is rubber material. Rubber has excellent elasticity, can withstand repeated deformation without breaking, absorb and reduce vibration, and can buffer external impact very well. The material of the waterproof layer 22 is polyvinyl chloride, which is waterproof, resistant to erosion by various chemicals, and has certain wear resistance. It is also lower in cost than other plastic materials. The material of the corrosion-resistant layer 21 is epoxy resin. The cured epoxy resin has high mechanical strength, good resistance to various chemicals, and can maintain stable performance in a large temperature range.

[0031] Working principle: When in use, the staff connects the ends of multiple groups of insulation pipes, puts the small sealing ring 18 into the annular groove 4, puts the large sealing ring 19 on the annular platform 20, inserts the annular protrusion 3 at one end of the outer wall 1 of the pipe into the annular groove 4, aligns the second fixing block 14 with the first fixing block 6, pushes the locking block 7, inserts one end of the locking block 7 into the second fixing block 14, and then inserts the two groups of bolts 9 into the locking block 7, cooperates with the first gasket 10, rotates the two groups of hexagonal nuts 11, and after locking the hexagonal nuts 11, extends the hexagonal threaded rod 15 into the second fixing block 14, cooperates with the second gasket 16 to rotate into the threaded hole 12, and tightens the second gasket 16, thereby connecting the second connecting block 13 with the first connecting block 5, and assembles the four groups of first fixing blocks 6 and the second fixing blocks 14 in turn. By tightening the first connecting block 5 and the second connecting block 13, the inner lining pipe 2 in the insulation pipe is also squeezed against each other at the head and tail. The large sealing ring 19 and the small sealing ring 18 are tightly matched to seal the inner liner tube 2. The utility model also realizes the multiple functions of the insulation tube such as wear resistance, impact resistance, heat preservation, and leakage prevention. The insulation tube is protected from external friction by the outermost wear-resistant layer 23, and the damage caused by wear is reduced to extend the service life of the insulation tube. The temperature of the pipeline inside the inner liner tube 2 is locked by the insulation layer 17 to reduce heat exchange with the external environment and achieve a good insulation effect. When the outside of the insulation tube is subjected to impact force, the external force can be buffered by the buffer layer 8, and most of the force can be removed to better protect the internal pipeline. When the pipeline inside the inner liner tube 2 leaks, the corrosion-resistant layer 21 can first prevent the leaked liquid from corroding the insulation tube. Secondly, the setting of the waterproof layer 22 prevents the internal liquid from leaking out to the outside of the inner liner tube 2. The cooperation of the small sealing ring 18 and the large sealing ring 19 at the connection of multiple groups of insulation tubes also seals the pipelines to avoid leakage.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A leakproof sealing structure for a thermal insulation pipe, comprising a pipe outer wall (1), characterized in that: One end of the outer wall (1) of the tube is fixedly connected to a first connection block (5), and the other end of the outer wall (1) of the tube is fixedly connected to a second connection block (13). The first connection block (5) is fixedly connected to a first fixing block (6). A locking block (7) is slidably connected inside the first fixing block (6). A bolt (9) is slidably connected inside the locking block (7). One end of the bolt (9) is threadedly connected inside the first fixing block (6). A first gasket (10) is slidably connected to the bolt (9). A hexagonal nut (11) is threadedly connected to the bolt (9). One end of the locking block (7) is provided with a threaded hole (12). ), the second connecting block (13) is fixedly connected to a second fixing block (14), a hexagonal threaded rod (15) slides inside the second fixing block (14), a second gasket (16) slides on the hexagonal threaded rod (15), an inner liner tube (2) is fixedly connected to the outer wall (1) of the tube, an annular platform (20) is provided at one end of the inner liner tube (2), an annular protrusion (3) is provided on the annular platform (20), an annular groove (4) is provided on the other end of the inner liner tube (2), a small sealing ring (18) is provided on the annular protrusion (3), and a large sealing ring (19) is provided on the annular platform (20).

2. The leakproof sealing structure of the thermal insulation pipe according to claim 1, characterized in that: The outer wall (1) of the tube is provided with a buffer layer (8), a heat-insulating layer (17), and a wear-resistant layer (23) in sequence from the inside to the outside.

3. The leakproof sealing structure of the thermal insulation pipe according to claim 2, characterized in that: The inner lining pipe (2) is provided with a corrosion-resistant layer (21) and a waterproof layer (22) in sequence from the inside to the outside.

4. The leakproof sealing structure of the thermal insulation pipe according to claim 3, characterized in that: The bolts (9) are provided in two groups and are symmetrically distributed on the locking block (7). The locking block (7) is T-shaped. The longer end of the locking block (7) slides in the second fixing block (14). One end of the hexagonal threaded rod (15) is threadedly connected in the threaded hole (12). The annular protrusion (3) is located in the annular groove (4). The small sealing ring (18) and the large sealing ring (19) are located between the annular protrusion (3) and the annular groove (4).

5. The leakproof sealing structure of the thermal insulation pipe according to claim 4, characterized in that: The length of the inner liner pipe (2) is greater than the outer wall (1) of the pipe, and the first fixing blocks (6) are provided in four groups and are evenly distributed on the second connecting block (13).

6. The leakproof sealing structure of the thermal insulation pipe according to claim 5, characterized in that: The material of the wear-resistant layer (23) is polyethylene resin, the material of the thermal insulation layer (17) is rock wool, and the material of the buffer layer (8) is rubber material.

7. The leakproof sealing structure of the thermal insulation pipe according to claim 6, characterized in that: The material of the waterproof layer (22) is polyvinyl chloride, and the material of the corrosion-resistant layer (21) is epoxy resin.

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