A gas hose for use in a theatrical show

Abstract

The utility model provides a kind of gas hose applied in show, including metal bellows, the end portion of metal bellows is sleeved with flange, the flange includes plate body, the side middle part of plate body is equipped with accommodating groove, the end portion welding of metal bellows is limited ring is arranged, and limited ring is fitted in accommodating groove, the inside thread connection of accommodating groove has retaining ring, and retaining ring buckling limited ring, sealing pad is arranged between the retaining ring and limited ring, the surface of metal bellows is wrapped with metal braided cover, the side sleeve of flange is equipped with connecting sleeve, and the end buckling of metal braided cover is between flange and connecting sleeve. The utility model can avoid the falling between metal bellows and flange, improve the security of use.

Description

Technical Field

[0001] This utility model relates to the field of gas hose technology, and in particular to a gas hose used in entertainment shows. Background Technology

[0002] A stage is the space provided in a theater for actors to perform, allowing the audience to focus their attention on the actors and achieve an ideal viewing experience. A stage typically consists of one or more platforms, some of which can be raised and lowered. Types of stages include proscenium stages, extended stages, circular stages, and rotating stages. With technological advancements, the viewing experience can be greatly enhanced through atmospheric effects such as lighting, pyrotechnics, and smoke.

[0003] The flame effects on stage are mostly achieved through the combustion of propellant gas. During the construction of the gas pipeline, flexible hoses are needed to adjust for positional deviations and dimensional changes caused by thermal expansion and contraction. However, the stage environment is complex, with various sources of vibration and the influence of the number of spectators, necessitating the ensuring the safety of these flexible hoses. Utility Model Content

[0004] To address the aforementioned problems, this utility model discloses a gas hose for use in performance shows, comprising a metal corrugated pipe. A flange is fitted to the end of the metal corrugated pipe. The flange includes a plate body with a receiving groove formed in the center of one side. A limiting ring is welded to the end of the metal corrugated pipe, and the limiting ring engages within the receiving groove. A fixing ring is threaded into the inside of the receiving groove, and the fixing ring presses against the limiting ring. A sealing gasket is placed between the fixing ring and the limiting ring. By passing the metal corrugated pipe through the center of the flange and using the welded limiting ring, the metal corrugated pipe is prevented from detaching from the flange, thus improving safety.

[0005] The surface of the metal bellows is covered with a metal braided sleeve, and a connecting sleeve is fitted onto one side of the flange, with the end of the metal braided sleeve pressed between the flange and the connecting sleeve. The metal braided sleeve protects the internal metal bellows and also bears axial tensile force to a certain extent, preventing the metal bellows from exceeding its deformation length.

[0006] Preferably, one side of the limiting ring is provided with a plurality of limiting protrusions, which fit into pre-set holes in the receiving groove. The limiting protrusions serve a positioning function.

[0007] Preferably, one side of the plate is provided with a first threaded section and a first conical section, and the inner wall of the connecting sleeve is provided with a second threaded section and a second conical section in sequence. The first threaded section and the second threaded section mate, and the first conical section and the second conical section mate. That is, the connecting sleeve is first fixedly connected to the flange by a threaded connection.

[0008] Preferably, the metal braided sleeve is clamped and fixed between the first conical section and the second conical section. The conical surface is provided so that when the connecting sleeve moves axially, the first and second conical sections can clamp and fix the metal braided mesh.

[0009] Preferably, a welding bevel is provided on one side of the plate. After the connecting sleeve is rotated and fixed, to ensure the stability of the connection, the connecting sleeve and the flange can be integrated by welding, thereby improving the shock resistance of the hose.

[0010] The beneficial effects of this utility model are as follows: 1. Pass the metal bellows through the middle of the flange, and then weld a limiting ring. The limiting ring prevents the metal bellows from detaching from the middle of the flange. After the flange is connected to other gas pipes, the metal bellows will always remain connected unless the metal bellows itself is damaged, thus improving the safety of use.

[0011] 2. A metal braided sleeve is provided to protect the internal metal bellows. At the same time, the connecting sleeve and the flange are fixed by welding, making them a single unit. This greatly reduces the risk of the metal braided sleeve and the flange coming apart, and improves the safety of the hose. Attached Figure Description

[0012] Figure 1 This is a three-dimensional schematic diagram of the present invention; Figure 2 This is an exploded view diagram from the first perspective of this utility model; Figure 3 This is an exploded view of the second perspective of the present invention. Figure 4 This is a three-dimensional schematic diagram of the flange of this utility model; Figure 5 for Figure 3 Enlarged view of point A in the middle.

[0013] List of reference numerals in the attached diagram: 1. Flange; 2. Retaining ring; 3. Metal braided sleeve; 4. Connecting sleeve; 5. Sealing gasket; 6. Metal bellows; 7. Limiting protrusion; 8. Limiting ring; 11. Receiving groove; 12. Plate body; 13. Welding bevel; 14. First threaded section; 15. First conical section; 41. Second threaded section; 42. Second conical section. Detailed Implementation

[0014] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention. It should be noted that the terms "front", "rear", "left", "right", "up" and "down" used in the following description refer to the directions in the accompanying drawings, and the terms "inner" and "outer" refer to the directions toward or away from the geometric center of a specific component, respectively.

[0015] like Figures 1 to 5 As shown, a gas hose used in performance shows includes a metal corrugated pipe 6. A flange 1 is fitted to the end of the metal corrugated pipe 6. The flange 1 includes a plate 12, a circular plate with through holes in its center and at its edges. The central through hole is for the metal corrugated pipe 6 to pass through, while the edge through holes are for bolts to pass through. A receiving groove 11 is formed in the center of one side of the plate 12. The receiving groove 11 is a circular recess. A limiting ring 8 is welded to the end of the metal corrugated pipe 6, and the limiting ring 8 fits in the receiving groove 11. That is, after the metal corrugated pipe 6 passes through the plate 12, a limiting ring 8 is welded to the end of the plate. The limiting ring 8 prevents the metal bellows 6 from detaching from the plate 12, thus avoiding the problem of the metal bellows 6 and flange 6 separating during installation and use, and improving safety. The receiving groove 11 is internally threaded with a fixing ring 2. The side wall of the fixing ring 2 is threaded, and the inside of the receiving groove 11 is threaded. The two cooperate with each other. In addition, several openings are provided on the inner wall of the fixing ring 2, which makes it easy for tools to clamp the openings and rotate the fixing ring 2. The fixing ring 2 also clamps the limiting ring 8. A sealing gasket 5 is provided between the fixing ring 2 and the limiting ring 8 to ensure the sealing performance at this point.

[0016] The surface of the metal bellows 6 is covered with a metal braided sleeve 3 to protect the surface of the metal bellows 6. A connecting sleeve 4 is fitted onto one side of the flange 1, and the end of the metal braided sleeve 3 is pressed between the flange 1 and the connecting sleeve 4. The metal braided sleeve 3 is fixed to the flange 1 by means of the connecting sleeve 4.

[0017] A number of limiting protrusions 7 are provided on one side of the limiting ring 8. The limiting protrusions 7 fit into the pre-set holes in the receiving groove 11, that is, the limiting protrusions 7 are used for positioning.

[0018] The plate 12 has a first threaded section 14 and a first conical section 15 on one side. The inner wall of the connecting sleeve 4 has a second threaded section 41 and a second conical section 42 in sequence. The first threaded section 14 and the second threaded section 41 are engaged, and the first conical section 15 and the second conical section 42 are engaged. That is, the connecting sleeve 4 and the flange 1 are fixedly connected through the first threaded section 14 and the second threaded section 41.

[0019] The metal braided sleeve 3 is clamped and fixed between the first conical section 15 and the second conical section 42. When the connecting sleeve 4 moves axially, the structure of its conical surface facilitates the clamping and fixing of the metal braided sleeve 3.

[0020] A welding bevel 13 is provided on one side of the plate 12. After the connecting sleeve 4 is connected and fixed, in order to prevent the connecting sleeve 4 from falling off due to vibration and other factors, a welding bevel 13 is provided. The flange 1 and the connecting sleeve 4 are welded into a whole by welding.

[0021] The technical means disclosed in this utility model are not limited to the technical means disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features.

Claims

1. A gas hose for use in performance shows, characterized in that, The device includes a metal bellows (6), the end of which is fitted with a flange (1), the flange (1) includes a plate (12), a receiving groove (11) is provided in the middle of one side of the plate (12), a limiting ring (8) is welded to the end of the metal bellows (6), and the limiting ring (8) is fitted in the receiving groove (11), a fixing ring (2) is threaded inside the receiving groove (11), and the fixing ring (2) presses against the limiting ring (8), and a sealing gasket (5) is provided between the fixing ring (2) and the limiting ring (8). The surface of the metal bellows (6) is covered with a metal braided sleeve (3), and a connecting sleeve (4) is fitted onto one side of the flange (1), with the end of the metal braided sleeve (3) pressed between the flange (1) and the connecting sleeve (4).

2. A gas hose for use in performance shows according to claim 1, characterized in that: The limiting ring (8) has several limiting protrusions (7) on one side, and the limiting protrusions (7) fit into the pre-set holes in the receiving groove (11).

3. A gas hose for use in performance shows according to claim 1, characterized in that: The plate (12) is provided with a first threaded section (14) and a first conical section (15) on one side. The inner wall of the connecting sleeve (4) is provided with a second threaded section (41) and a second conical section (42) in sequence. The first threaded section (14) and the second threaded section (41) cooperate, and the first conical section (15) and the second conical section (42) cooperate.

4. A gas hose for use in performance shows according to claim 3, characterized in that: The metal braided sleeve (3) is clamped and fixed between the first conical section (15) and the second conical section (42).

5. A gas hose for use in performance shows according to claim 3, characterized in that: A welding bevel (13) is provided on one side of the plate (12).

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