A shield tunneling machine cabin heating system

Abstract

This utility model discloses a heating system for the manned cabin of a tunnel boring machine, including an electric heating pipe and a cabin mother flange. The flange of the electric heating pipe is connected to the flange of the cabin mother flange. It also includes a sealing mechanism. By setting a sealing mechanism at the manned cabin heating system composed of the electric heating pipe and the cabin mother flange, the upper pressure cover and the lower connecting cover of the sealing mechanism, with a rubber inner cover, cover the outside of the electric heating pipe and the cabin mother flange. The semi-annular convex gasket of the rubber inner cover and the convex rib tightly abut against the edge of the contacting flange body to form an initial seal. The rubber inner cover presses against the flange and the tail pipe body of the electric heating pipe and the cabin mother flange to form a second seal. In addition, the airbag collar A and airbag collar B can be inflated and expanded at the half-pipe body of the upper pressure cover and the lower connecting cover at the tail pipe body of the electric heating pipe and the cabin mother flange to form a third seal, effectively preventing heat leakage from the electric heating pipe and the cabin mother flange to ensure heating efficiency.

Description

Technical Field

[0001] This utility model relates to the field of tunnel boring machine technology, and in particular to a tunnel boring machine cabin heating system. Background Technology

[0002] If the cutterhead of a tunnel boring machine malfunctions during tunneling and requires repair or replacement, workers need to enter the soil chamber through the tunnel boring machine's personnel compartment to perform pressurized operations. The personnel compartment, as the passage to the soil chamber, can be pressurized and depressurized. When workers want to exit the high-pressure personnel compartment, they need to release the air and depressurize before leaving. During this process, the temperature inside the personnel compartment drops rapidly. The heating system in the personnel compartment can compensate for this temperature loss and ensure a stable environment inside the compartment.

[0003] Currently, the heating system of the tunnel boring machine (TBM) cabin uses resistance heating tubes as heating elements in conjunction with sensors for cabin heating. These resistance heating tubes are usually installed in the form of flanges at the lower part of the cabin side wall, the top of the cabin, and the corners of the cabin. However, during the operation of the TBM, the cabin needs to withstand high pressure. The gasket at the connection between the male and female flanges of the heating tube is a weak point in the seal. After the simple gasket is aged under pressure, the installation point of the heating tube is prone to heat leakage, and it is also easy to cause high-pressure gas to leak out of the cabin. Therefore, we propose a TBM cabin heating system. Utility Model Content

[0004] The main objective of this invention is to provide a heating system for the manned cabin of a tunnel boring machine. This system utilizes a sealing mechanism at the manned cabin heating system, which consists of an electric heating pipe and a cabin flange. The upper and lower sealing covers of this mechanism, along with rubber inner covers, can cover the outside of the electric heating pipe and the cabin flange. The semi-circular convex gaskets and opposing ribs of the rubber inner cover tightly abut against the edges of the contacting flanges, forming a direct, initial seal. Subsequently, the entire rubber inner cover presses against the flanges and tailpipe of the electric heating pipe and the cabin flange, and a second seal is formed by the semi-rubber tubes engaging with the semi-pipes of the upper and lower sealing covers. The seal further blocks the leakage path, ensuring that leaks affecting the cabin heating system are unlikely to occur at the electric heating tube and the cabin mother flange. Furthermore, airbag collars A and B can be inflated at the tail pipe of the electric heating tube and the cabin mother flange by fitting them onto the half-pipe of the upper pressure cover and the lower connecting cover. The elastic pressure of the airbag forms a dynamic seal compensation as a third seal. Together with the primary seal and the secondary seal, they form a multi-level sealing structure that not only effectively blocks heat leakage to ensure heating efficiency, but also avoids the risk of gas leakage under the high-pressure environment of the cabin, effectively solving the problems in the background technology.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A shield tunneling machine cabin heating system includes an electric heating pipe and a cabin mother flange. The flange of the electric heating pipe is connected to the flange of the cabin mother flange. The system also includes a sealing mechanism, which comprises an upper pressure cover, a lower connecting cover, a rubber inner cover, an airbag collar A, an airbag collar B, and a valve. The upper pressure cover and the lower connecting cover are symmetrically mounted on the outer sides of the flanges of the electric heating pipe and the cabin mother flange, forming rings. The two end halves of the upper pressure cover and the lower connecting cover are respectively fitted onto the tail section of the electric heating pipe and the cabin. Outside the tailpipe of the mother flange, rubber inner covers are symmetrically clipped and bonded to the inner cavities of the upper pressure cover and the lower connecting cover. The cover of the rubber inner cover presses against the outer side of the flange of the electric heating tube and the flange of the hull mother flange. Airbag collar A and airbag collar B are respectively clipped onto the tailpipe of the electric heating tube and the tailpipe of the hull mother flange. Airbag collar A and airbag collar B are sleeved on the outer side of the two half-pipes of the upper pressure cover and the lower connecting cover. A valve is fixed to the outer side of the ring of airbag collar A and airbag collar B.

[0006] Furthermore, cover frame plates are fixed on both sides of the cover body of the upper pressure cover and the lower connecting cover, and bolts for downward screwing nuts are passed through the cover frame plates of the upper pressure cover and the lower connecting cover. By adopting the above technical solution, bolts and nuts can be screwed through the cover frame plate of the upper pressure cover and the lower connecting cover to lock the upper pressure cover and the lower connecting cover.

[0007] Furthermore, a semi-circular convex pad is raised at the central inner wall of the rubber inner cover, and the pad surface of the semi-circular convex pad is symmetrically raised with a pair of convex ribs, and the pair of convex ribs abut against the edge of the flange of the electric heating tube and the mother flange of the cabin. By adopting the above technical solution, the rubber inner cover, with its semi-circular convex pad and convex rib, can be locked against the flange edge of the electric heating tube and the main flange of the cabin to form a sealing contact, thereby forming the initial sealing position.

[0008] Furthermore, the airbag collar A and airbag collar B are provided with concave annular surfaces, and the upper pressure cover and the lower connecting cover are inserted into the concave annular surfaces of the airbag collar A and airbag collar B. By adopting the above technical solution, the airbag collar A and airbag collar B can be used to clamp the half-tubes at both ends of the upper pressure cover and the lower connecting cover to achieve a triple seal with their concave annular surfaces.

[0009] Furthermore, the hollow bladder rings A and B of the airbag collar have side rubber tubes protruding on their outer sides, and valve stems are inserted and bonded into the side rubber tubes. By adopting the above technical solution, the valve can be inflated with an air pump, which allows the airbag collar A and airbag collar B to expand and securely fit onto the outer side of the half-tube at both ends of the upper pressure cover and the lower connecting cover.

[0010] Furthermore, the rubber inner cover has protruding semi-rubber tubes on both sides of the cover body, and the semi-rubber tubes are inserted into the semi-tube bodies at both ends of the upper pressure cover and the lower receiving cover. By adopting the above technical solution, the rubber inner cover can be inserted into the upper pressure cover and the lower connecting cover half-pipe body to compress the electric heating tube and the tail pipe body of the hull mother flange.

[0011] Compared with the prior art, the present invention has the following beneficial effects: This invention provides a sealing mechanism at the manned cabin heating system, which consists of an electric heating tube and a cabin mother flange. The upper pressure cover and lower connecting cover of the sealing mechanism, along with the rubber inner cover, can cover the outside of the electric heating tube and the cabin mother flange. The semi-circular convex gasket and the opposing convex rib of the rubber inner cover are tightly engaged with the edge of the contacting flange body to form a direct and fitting initial seal. Subsequently, the entire rubber inner cover is pressed onto the outside of the flange and tailpipe of the electric heating tube and the cabin mother flange, and a second seal is formed by the semi-rubber tube engaging with the semi-pipe of the upper pressure cover and the lower connecting cover, further blocking the leakage channel and ensuring that leakage affecting the manned cabin heating system is unlikely to occur at the electric heating tube and the cabin mother flange. Furthermore, airbag collars A and B can be inflated by fitting them onto the upper and lower half-pipes of the electric heating tube and the tail pipe of the cabin flange. The elastic pressure of the airbag forms a dynamic seal compensation as a third seal. Together with the primary seal and the secondary seal, they form a multi-level sealing structure that can not only effectively prevent heat leakage to ensure heating efficiency, but also avoid the risk of gas leakage in the high-pressure environment of the cabin. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of a shield tunneling machine cabin heating system according to the present invention.

[0013] Figure 2 This is a schematic diagram showing the disassembled upper and lower pressure covers of a shield machine cabin heating system according to this utility model.

[0014] Figure 3 This is an exploded view of the enclosure mechanism of a shield tunneling machine cabin heating system according to this utility model.

[0015] In the diagram: 1. Electric heating tube; 2. Cabin mother flange; 3. Sealing mechanism; 4. Upper pressure cover; 5. Lower connecting cover; 6. Cover frame plate; 7. Rubber inner cover; 8. Semi-circular convex gasket; 9. Convex rib; 10. Airbag collar A; 11. Airbag collar B; 12. Valve nozzle. Detailed Implementation

[0016] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0017] like Figure 1-3As shown, a shield tunneling machine cabin heating system includes an electric heating pipe 1 and a cabin mother flange 2. The flange of the electric heating pipe 1 is connected to the flange of the cabin mother flange 2. The system also includes a sealing mechanism 3, which comprises an upper pressure cover 4, a lower connecting cover 5, a rubber inner cover 7, an airbag collar A10, an airbag collar B11, and a valve 12. The upper pressure cover 4 and the lower connecting cover 5 are symmetrically installed on the outer sides of the flanges of the electric heating pipe 1 and the cabin mother flange 2, forming annular covers. The two end halves of the upper pressure cover 4 and the lower connecting cover 5 are respectively fitted onto the tail section of the electric heating pipe 1 and the cabin. Outside the tailpipe of the mother flange 2, rubber inner covers 7 are symmetrically clipped and bonded to the inner cavities of the upper pressure cover 4 and the lower connecting cover 5. The cover body of the rubber inner cover 7 presses against the outer side of the flange of the electric heating tube 1 and the flange of the mother flange 2 of the cabin. Airbag collars A10 and B11 are respectively clipped onto the tailpipe of the electric heating tube 1 and the tailpipe of the mother flange 2 of the cabin. Airbag collars A10 and B11 are sleeved on the outer side of the two half-pipes of the upper pressure cover 4 and the lower connecting cover 5. A valve 12 is fixedly connected to the outer side of the ring of airbag collar A10 and airbag collar B11.

[0018] Among them, the upper pressure cover 4 and the lower connecting cover 5 are respectively fixed with cover frame plates 6 on both sides of the cover body, and bolts for downward screwing nuts are passed through the cover frame plates 6 of the upper pressure cover 4 and the lower connecting cover 5. By adopting the above technical solution, bolts and nuts can be screwed through the cover frame plate 6 to lock the upper pressure cover 4 and the lower connecting cover 5.

[0019] Among them, a semi-annular convex pad 8 is raised at the central inner wall of the rubber inner cover 7, and a pair of convex ribs 9 are symmetrically raised on the pad surface of the semi-annular convex pad 8, and the pair of convex ribs 9 abut against the flange edge of the electric heating tube 1 and the cabin mother flange 2. By adopting the above technical solution, the rubber inner cover 7, with the semi-circular convex gasket 8 and the convex rib 9, can be locked against the flange edge of the electric heating tube 1 and the cabin mother flange 2 to form a sealing contact, thereby forming the initial sealing position.

[0020] The airbag collar A10 and airbag collar B11 have concave annular surfaces inside their rings, and the upper pressure cover 4 and the lower connecting cover 5 are inserted into the concave annular surfaces of the airbag collar A10 and airbag collar B11. By adopting the above technical solution, the airbag collar A10 and airbag collar B11 can be used to clamp the half-tubes at both ends of the upper pressure cover 4 and the lower cover 5 with their concave annular surfaces to achieve a triple seal.

[0021] Among them, the hollow bladder rings A10 and B11 have side rubber tubes protruding on the outside, and valve stems 12 are inserted and bonded inside the side rubber tubes. By adopting the above technical solution, the valve 12 can be used with an air pump to inflate, thereby allowing the airbag collar A10 and airbag collar B11 to expand and securely fit on the outer side of the half-tube at both ends of the upper pressure cover 4 and the lower connecting cover 5.

[0022] Among them, the rubber inner cover 7 has protruding semi-rubber tubes on both sides of the cover body, and the semi-rubber tubes are inserted into the semi-tubes that are bonded to both ends of the upper pressure cover 4 and the lower receiving cover 5. By adopting the above technical solution, the rubber inner cover 7 can be inserted into the upper pressure cover 4 and the lower connecting cover 5 half-pipe body to compress the electric heating tube 1 and the tail pipe body of the cabin mother flange 2.

[0023] It should be noted that this utility model is a heating system for the manned cabin of a tunnel boring machine. A sealing mechanism 3 is installed at the manned cabin heating system composed of an electric heating pipe 1 and a cabin mother flange 2. The airbag collars A10 and B11 of the sealing mechanism 3 can be pre-opened and fitted onto the tail section of the electric heating pipe 1 and the cabin mother flange 2. A rubber inner cover 7 is bonded inside the upper pressure cover 4 and lower connecting cover 5 of the sealing mechanism 3. Simultaneously, a cover frame plate 6 is provided on the edge of the upper pressure cover 4 and lower connecting cover 5. When the electric heating pipe 1 is inserted into the cabin along the cabin mother flange 2, the flanges of the electric heating pipe 1 and the cabin mother flange 2 can be connected by bolts and nuts. At the same time, the upper pressure cover 4 and lower connecting cover 5 can symmetrically cover the outside of the flanges of the electric heating pipe 1 and the cabin mother flange 2, so that the rubber inner cover 7 presses against the flanges of the electric heating pipe 1 and the cabin mother flange 2. The outer side and the outer side of the tailpipe form a double seal. At the same time, the semi-annular convex gasket 8 inside the rubber inner cover 7 cooperates with the convex rib 9 to press against the flange edge of the electric heating tube 1 and the cabin mother flange 2 to form a sealing contact, thus forming the initial sealing position. Subsequently, the airbag collar A10 and airbag collar B11 can be fitted onto the outer side of the half-pipe of the upper pressure cover 4 and the lower connecting cover 5, and onto the outer side of the tailpipe of the electric heating tube 1 and the cabin mother flange 2. The valve 12 can be used with an air pump to inflate, so that the airbag collar A10 and airbag collar B11 can expand, thus firmly clamping onto the outer side of the half-pipe at both ends of the upper pressure cover 4 and the lower connecting cover 5 to form a triple seal. This ensures that the connection position between the electric heating tube 1 and the cabin mother flange 2 has a reliable triple seal, ensuring that the connection position between the electric heating tube 1 and the cabin mother flange 2 is not prone to leakage and affecting the heating and sealing performance of the cabin. After removing the bolts and nuts at the cover plate 6, the airbag collar A10 and airbag collar B11 can be deflated. Then, the airbag collar A10 and airbag collar B11 can be pushed outwards and backwards to separate the upper pressure cover 4 and the lower connecting cover 5. At this time, the bolts and nuts of the electric heating tube 1 and the cabin mother flange 2 can be removed.

[0024] It should be noted that this utility model is a heating system for the manhole of a tunnel boring machine. All components in this utility model are known to those skilled in the art, and their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A shield tunneling machine cabin heating system, comprising an electric heating pipe (1) and a cabin body female flange (2), the flange plate of the electric heating pipe (1) is flange connected with the cabin body female flange (2), characterized in that: It also includes a sealing mechanism (3), which includes an upper pressure cover (4), a lower connecting cover (5), a rubber inner cover (7), an airbag collar A (10), an airbag collar B (11), and a valve (12). The flange of the electric heating tube (1) and the flange of the cabin mother flange (2) are symmetrically installed with an annular cover assembled from the upper pressure cover (4) and the lower connecting cover (5). The two half-pipes of the upper pressure cover (4) and the lower connecting cover (5) are respectively fitted onto the tail pipe of the electric heating tube (1) and the tail pipe of the cabin mother flange (2). The inner cover of the upper pressure cover (4) and the lower connecting cover (5) A rubber inner cover (7) is symmetrically attached to the cavity, and the cover of the rubber inner cover (7) presses against the outside of the flange of the electric heating tube (1) and the flange of the cabin mother flange (2). The tail tube of the electric heating tube (1) and the tail tube of the cabin mother flange (2) are respectively fitted with airbag collar A (10) and airbag collar B (11), and the airbag collar A (10) and airbag collar B (11) are fitted on the outside of the two half tubes of the upper pressure cover (4) and the lower connecting cover (5). The airbag collar A (10) and airbag collar B (11) are connected and fixed with valves (12) on the outside of the rings.

2. The heating system for the human cabin of a tunneling machine according to claim 1, characterized in that: The upper pressure cover (4) and the lower connecting cover (5) are respectively fixed with cover frame plates (6) on both sides, and bolts for downward screwing nuts are passed through the cover frame plates (6) of the upper pressure cover (4) and the lower connecting cover (5).

3. The heating system for the human cabin of a tunneling machine according to claim 1, characterized in that: The inner wall of the rubber inner cover (7) has a semi-circular convex pad (8) protruding in the center, and the surface of the semi-circular convex pad (8) has symmetrically raised ribs (9), and the ribs (9) abut against the edge of the flange of the electric heating tube (1) and the mother flange (2) of the cabin.

4. The heating system for the human cabin of a tunneling machine according to claim 1, characterized in that: The airbag collar A (10) and airbag collar B (11) have concave annular surfaces inside their rings, and the upper pressure cover (4) and lower connecting cover (5) half-tubes are inserted into the concave annular surfaces of the airbag collar A (10) and airbag collar B (11).

5. The heating system for the human cabin of a shield tunneling machine according to claim 1, characterized in that: The hollow bladder rings A (10) and B (11) have side rubber tubes protruding on their outer sides, and valve stems (12) are inserted and bonded inside the side rubber tubes.

6. The tunneling machine crew cabin heating system of claim 1, wherein: The rubber inner cover (7) has protruding semi-rubber tubes on both sides of the cover body, and the semi-rubber tubes are inserted into the semi-tubes that are bonded to both ends of the upper pressure cover (4) and the lower connecting cover (5).

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