Heat distribution pipeline orifice sealing structure

Abstract

The utility model discloses a heat distribution pipeline orifice sealing structure which comprises a heat distribution pipe, a connecting pipe is arranged at one end of the heat distribution pipe, a butt joint pipe is connected to one end of the heat distribution pipe, one end of the butt joint pipe is inserted into the connecting pipe, a sealing assembly is arranged in the butt joint pipe and comprises an annular sealing ring and a push plate, and the annular sealing ring is sleeved with the butt joint pipe in a sliding mode. The multiple sets of push plates are annularly arranged in the butt joint pipe, one end of each push plate is connected with a push rod, the push rods are connected with the annular sealing ring, the sealing structure adopts the mode that multiple sealing assemblies cooperatively work, the sealing performance is remarkably improved, the sealing performance is improved through the sealing assemblies composed of the annular sealing ring, the push plates, the push rods and the springs, and the sealing performance is improved. The push plate is pushed through the spring, then the annular sealing ring is tightly attached to the inner wall of the connecting pipe, a good sealing state can be continuously kept even under the condition that the pipeline vibrates or the sealing ring is abraded to a certain degree, and stable operation of the heat distribution pipeline is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of pipe sealing technology, specifically relating to a sealing structure for the pipe opening of a thermal pipeline. Background Technology

[0002] Heating pipelines, which run from boiler rooms, direct-fired generator rooms, heating centers, and other sources of heat to the heat inlets of buildings, are called heating pipelines. As times change and people's living standards improve, the demand for heating increases, leading to a greater need for heating pipelines. The pipe openings where heating pipelines connect to connecting pipes must be strictly sealed to prevent leaks and improve the safety of heat transmission.

[0003] Currently, the sealing of heating pipelines largely relies on sealing rings to achieve the sealing function. However, in actual long-term operation, the sealing effect of sealing rings deteriorates significantly after prolonged use. On the one hand, the medium transported by heating pipelines is usually at a high temperature. Under long-term high-temperature environment, the material of the sealing ring will gradually age, harden, and lose elasticity. Taking common rubber sealing rings as an example, under the action of high-temperature heat media, their molecular structure will change, leading to a decrease in sealing performance and an inability to tightly adhere to the pipe wall, thus posing a risk of heat media leakage. On the other hand, heating pipelines will generate vibrations during operation. These vibrations will cause the sealing rings to be constantly subjected to friction and impact, accelerating their wear and further reducing the sealing effect. Since the worn areas cannot adhere to the pipe wall, the heat source can leak out through the worn areas, causing the sealing ring to fail and resulting in heat media leakage. Heat media leakage not only causes a large amount of heat energy loss but also reduces energy utilization efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a sealing structure for the pipe opening of a thermal pipeline to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sealing structure for a thermal pipeline inlet, comprising:

[0006] A heat pipe, one end of which is provided with a connecting pipe, and one end of the heat pipe is connected to a connecting pipe and inserted into the connecting pipe. The connecting pipe is provided with a sealing assembly for sealing the joint between the connecting pipe and the connecting pipe. The sealing assembly includes an annular sealing ring and a push plate. The annular sealing ring is slidably fitted inside the connecting pipe. Several sets of push plates are provided and arranged in a ring inside the connecting pipe. One end of the push plate is connected to a push rod and the push rod is connected to the annular sealing ring.

[0007] Preferably, the connecting tube is provided with a sliding groove on both sides of the push plate, and the two ends of the push plate are slidably connected to the sliding groove.

[0008] Preferably, the connecting pipe has several springs connected inside, and the other end of the springs is connected to a push plate. The springs push the push plate to move so that the annular sealing ring is tightly attached to the inner wall of the connecting pipe.

[0009] Preferably, the surface of the heat pipe is connected to a double-ear flange, the surface of the connecting pipe is connected to a connecting lug, and the double-ear flange and the connecting lug are fixed together by a plurality of first fastening bolts.

[0010] Preferably, a sealing cylinder for enhancing the seal is provided at the joint between the heat pipe and the connecting pipe.

[0011] Preferably, the sealing cylinder includes a first fixed cylinder and a second fixed cylinder, which are fitted onto the joint between the heat pipe and the connecting pipe.

[0012] Preferably, both ends of the first and second fixed cylinders are connected with screw lugs, and the screw lugs at both ends of the first and second fixed cylinders are screwed together and fixed by a second fastening bolt.

[0013] Preferably, both the first and second fixed cylinders are connected to a sealing gasket.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] (1) The sealing structure adopts a multi-seal component working together, which significantly improves the sealing performance. The sealing component consists of an annular sealing ring, a push plate, a push rod and a spring. The spring pushes the push plate, which in turn makes the annular sealing ring tightly fit against the inner wall of the connecting pipe. Even if the pipeline vibrates or the sealing ring wears to a certain extent, it can maintain a good sealing state and ensure the stable operation of the thermal pipeline.

[0016] (2) The sealing cylinder further enhances the sealing effect. The sealing gasket inside and the screw lugs at both ends of the first and second fixed cylinders are fixed by the second fastening bolts, providing additional sealing protection for the pipe joint from the outside, effectively preventing heat medium leakage.

[0017] (3) The double-ear flange and the connecting ear are fixed by the first fastening bolt, and the first fixed cylinder and the second fixed cylinder of the sealing cylinder are fixed by the bolted ear and the second fastening bolt. This makes the pipe connection and the installation of the sealing components simple and easy. During maintenance, if it is necessary to replace the sealing components or check the sealing condition, the bolts can be easily removed to repair or replace the relevant components, reducing maintenance time and cost.

[0018] (4) Use several first fastening bolts to screw the double-ear flange to the connecting ear. During the tightening of the first fastening bolts, the axial tension generated by the first fastening bolts makes the double-ear flange and the connecting ear close to each other and fit tightly together, which can firmly connect the heat pipe and the connecting pipe together, thereby enhancing the firmness of the connection between the connecting pipe and the heat pipe. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the butt joint pipe and the connecting pipe when they are disconnected from each other;

[0021] Figure 3 This is a side view of the butt joint pipe and connecting pipe of this utility model when they are inserted.

[0022] Figure 4 This is a schematic diagram of the structure of the annular sealing ring of this utility model when it seals with the connecting pipe;

[0023] Figure 5 This is a schematic diagram of the structure of the first and second fixed cylinders of this utility model.

[0024] In the diagram: 1. Heating pipe; 2. Connecting pipe; 3. Sealing cylinder; 4. Connecting pipe; 5. Annular sealing ring; 6. Push plate; 7. Push rod; 8. Slide groove; 9. Spring; 10. Double-ear flange; 11. Connecting ear; 12. First fastening bolt; 13. First fixing cylinder; 14. Second fixing cylinder; 15. Threaded ear; 16. Second fastening bolt; 17. Sealing gasket. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] This utility model provides, for example Figure 1-5 The illustrated sealing structure for a thermal pipeline nozzle includes:

[0027] A heat pipe 1 is provided with a connecting pipe 2 at one end. A connecting pipe 4 is connected to one end of the heat pipe 1 and one end of the connecting pipe 4 is inserted into the connecting pipe 2. A sealing assembly for sealing the joint between the connecting pipe 2 and the connecting pipe 4 is provided in the connecting pipe 4. The sealing assembly includes an annular sealing ring 5 and a push plate 6. The annular sealing ring 5 is slidably fitted into the connecting pipe 4. Several sets of push plates 6 are provided and several push plates 6 are arranged in a ring in the connecting pipe 4. A push rod 7 is connected to one end of the push plate 6 and the push rod 7 is connected to the annular sealing ring 5.

[0028] The connecting pipe 4 is provided with a sliding groove 8 on both sides of the push plate 6. The two ends of the push plate 6 are slidably connected to the sliding groove 8. The sliding groove 8 provides a precise guide path for the movement of the push plate 6, so that the push plate 6 can only slide along the direction set by the sliding groove 8. This effectively avoids the push plate 6 from deviating or tilting during movement, ensuring the uniformity of contact between the annular sealing ring 5 and the inner wall of the connecting pipe 2, thereby improving the sealing effect.

[0029] The connecting pipe 4 is internally connected to several springs 9, and the other end of the springs 9 is connected to the push plate 6. The springs 9 push the push plate 6 to move so that the annular sealing ring 5 is tightly attached to the inner wall of the connecting pipe 2.

[0030] The surface of the heat pipe 1 is connected to a double-ear flange 10, and the surface of the connecting pipe 2 is connected to a connecting lug 11. The double-ear flange 10 and the connecting lug 11 are fixed together by a number of first fastening bolts 12. The double-ear flange 10 and the connecting lug 11 are screwed together by a number of first fastening bolts 12. During the tightening of the first fastening bolts 12, the axial tensile force generated by the first fastening bolts 12 causes the double-ear flange 10 and the connecting lug 11 to come closer to each other and fit tightly together, so that the heat pipe 1 and the connecting pipe 2 can be firmly connected together, thereby enhancing the firmness of the connection between the connecting pipe 2 and the heat pipe 1.

[0031] The joint between the heating pipe 1 and the connecting pipe 2 is provided with a sealing cylinder 3 for enhancing the seal.

[0032] The sealing cylinder 3 includes a first fixed cylinder 13 and a second fixed cylinder 14, which are fitted onto the joint between the heat pipe 1 and the connecting pipe 2.

[0033] Both ends of the first fixed cylinder 13 and the second fixed cylinder 14 are connected to threaded lugs 15. The threaded lugs 15 at both ends of the first fixed cylinder 13 and the second fixed cylinder 14 are fixed together by a second fastening bolt 16. The threaded connection provides convenience for installation and maintenance. During installation, the construction personnel only need to put the two fixed cylinders on, align the threaded lugs 15, and tighten the second fastening bolt 16 with a tool to complete the installation. The operation is simple and easy to master. During later maintenance or repair, the two fixed cylinders can be easily separated by rotating the second fastening bolt 16 in the opposite direction, which facilitates the inspection, replacement or repair of the internal sealing gasket 17, pipe connection parts, etc., reducing maintenance costs and difficulty.

[0034] Both the first fixed cylinder 13 and the second fixed cylinder 14 are connected to a sealing gasket 17. The annular sealing ring 5 and the sealing gasket 17 are made of ceramic fiber. Ceramic fiber is a high-performance inorganic fiber material. The ceramic fiber sealing gasket can withstand high temperatures of 1200℃-1400℃. It will not melt or burn at high temperatures. It has good heat insulation performance and elasticity and can maintain the sealing effect at high temperatures.

[0035] The sealing structure of this heating pipe joint works as follows: When connecting the heating pipe 1 and the connecting pipe 4, the connecting pipe 4 at one end of the heating pipe 1 is first inserted into the connecting pipe 2. At this time, with the insertion of the connecting pipe 4, the inner wall of the connecting pipe 4 presses inward, causing the annular sealing ring 5 to move into the connecting pipe 4 and compressing the spring 9. After installation, the spring 9 is in a compressed state, and its elastic force pushes the push plate 6. Since both ends of the push plate 6 are slidably connected to the sliding groove 8 inside the connecting pipe 4, this ensures that the push plate 6 can only move along the direction of the sliding groove 8, thus ensuring the stability of the push plate 6's movement. Under the elastic force of the spring 9, the push plate 6, through the push rod 7, drives the annular sealing ring 5 to move towards the inner wall of the connecting pipe 2 until the annular sealing ring 5 is tightly pressed against the connecting pipe. The inner wall of the connecting pipe 2 is sealed to the joint between the connecting pipe 2 and the connecting pipe 4. During the operation of the heat pipe 1, if the annular sealing ring 5 is worn or its sealing performance decreases due to factors such as heat and friction, the spring 9 will continue to play a role. The spring 9 is elastic and can adjust the thrust according to the position change of the annular sealing ring 5. When a gap appears between the annular sealing ring 5 and the inner wall of the connecting pipe 2, the compression bag spring 9 will extend further, pushing the push plate 6 and the annular sealing ring 5 to continue to move closer to the inner wall of the connecting pipe 2, always maintaining the tight contact between the annular sealing ring 5 and the inner wall of the connecting pipe 2, thereby continuously maintaining the sealing effect and preventing the heat medium from leaking from the joint between the connecting pipe 2 and the connecting pipe 4.

[0036] The sealing cylinder 3 is composed of a first fixed cylinder 13 and a second fixed cylinder 14. After the heat pipe 1 and the connecting pipe 2 are connected, the first fixed cylinder 13 and the second fixed cylinder 14 are pre-fitted at the connection point. Then, the first fastening bolt 12 can be rotated to gradually screw its threads into the screw holes of the double-ear flange 10 and the connecting ear 11. As the first fastening bolt 12 is tightened, the axial tension generated by the bolt causes the double-ear flange 10 and the connecting ear 11 to move closer to each other and fit tightly together, thereby firmly connecting the heat pipe 1 and the connecting pipe 2. This enhances the firmness of the connection between the connecting pipe 2 and the heat pipe 1 and ensures that the connecting pipe 2 maintains a stable connection with the heat pipe 1 during operation.

[0037] Since both ends of the first fixed cylinder 13 and the second fixed cylinder 14 are provided with screw lugs 15, after the double-ear flange 10 and the connecting lug 11 are fixed, the screw lugs 15 at both ends of the first fixed cylinder 13 and the second fixed cylinder 14 can be screwed and fixed by the second fastening bolt 16. During the tightening of the second fastening bolt 16, the first fixed cylinder 13 and the second fixed cylinder 14 gradually approach each other and tighten. The sealing cylinder 3 is connected to the sealing gasket 17. As the sealing cylinder 3 tightens, the sealing gasket 17 is compressed. The sealing gasket 17 has good elasticity and sealing performance, which can fill the small gap at the joint of the heat pipe 1 and the connecting pipe 2, and provide additional sealing protection for the pipe joint from the outside. The sealing gasket 17 can make up for the leakage risk caused by uneven pipe surface, incomplete sealing of the annular sealing ring 5, etc. Even if the annular sealing ring 5 fails to seal to a certain extent, the sealing cylinder 3 and the sealing gasket 17 can effectively prevent the heat medium from leaking and ensure the safe operation of the heat pipe 1.

[0038] This allows the sealing assembly and sealing cylinder 3 to work together during normal operation of the heat pipe 1. The annular sealing ring 5 in the sealing assembly acts as the first line of defense, directly contacting the heat medium and undertaking the main sealing task. The spring 9 pushes the annular sealing ring 5 to fit tightly against the inner wall of the connecting pipe 2 to prevent heat medium leakage. Meanwhile, the sealing cylinder 3 protects the entire joint from the outside, further enhancing the sealing effect and ensuring the safety and stability of heat transfer.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sealing structure for the inlet of a thermal pipeline, characterized in that, include: A heat pipe (1) is provided with a connecting pipe (2) at one end. A connecting pipe (4) is connected to one end of the heat pipe (1) and one end of the connecting pipe (4) is inserted into the connecting pipe (2). A sealing assembly for sealing the joint between the connecting pipe (2) and the connecting pipe (4) is provided in the connecting pipe (4). The sealing assembly includes an annular sealing ring (5) and a push plate (6). The annular sealing ring (5) is slidably fitted into the connecting pipe (4). The push plate (6) is provided in several groups and several push plates (6) are arranged in an annular shape in the connecting pipe (4). A push rod (7) is connected to one end of the push plate (6) and the push rod (7) is connected to the annular sealing ring (5).

2. The sealing structure for a thermal pipeline nozzle according to claim 1, characterized in that: The connecting pipe (4) is provided with a sliding groove (8) on both sides of the push plate (6), and the two ends of the push plate (6) are slidably connected to the sliding groove (8).

3. The sealing structure for a thermal pipeline nozzle according to claim 1, characterized in that: The connecting tube (4) is internally connected to several springs (9), and the other end of the springs (9) is connected to the push plate (6).

4. The sealing structure for a thermal pipeline nozzle according to claim 1, characterized in that: The surface of the heat pipe (1) is connected to a double-ear flange (10), and the surface of the connecting pipe (2) is connected to a connecting ear (11). The double-ear flange (10) and the connecting ear (11) are screwed together by a number of first fastening bolts (12).

5. The sealing structure for a thermal pipeline nozzle according to claim 1, characterized in that: The joint between the heat pipe (1) and the connecting pipe (2) is provided with a sealing cylinder (3) for enhancing the seal.

6. The sealing structure for a thermal pipeline nozzle according to claim 5, characterized in that: The sealing cylinder (3) includes a first fixed cylinder (13) and a second fixed cylinder (14), which are fitted onto the joint of the heat pipe (1) and the connecting pipe (2).

7. A sealing structure for a thermal pipeline nozzle according to claim 6, characterized in that: Both ends of the first fixed cylinder (13) and the second fixed cylinder (14) are connected with screw lugs (15), and the screw lugs (15) at both ends of the first fixed cylinder (13) and the second fixed cylinder (14) are screwed together and fixed by a second fastening bolt (16).

8. A sealing structure for a thermal pipeline nozzle according to claim 6, characterized in that: Both the first fixed cylinder (13) and the second fixed cylinder (14) are connected to a sealing gasket (17).

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