High-pressure-resistant spiral corrugated pipe

Abstract

The utility model discloses a high pressure resistant spiral corrugated pipe, which relates to the technical field of spiral corrugated pipes, and comprises a front side assembly head, the front side assembly head is installed and connected on the front end position of a pressure resistant spiral corrugated pipe main body, and the rear end of the pressure resistant spiral corrugated pipe main body is provided with a rear side assembly head. A hot melting connecting sleeve is arranged on the peripheral side of the rear side assembling head, and inner pipe cavities are formed in the front side assembling head, the compression-resistant spiral corrugated pipe body and the rear side assembling head. According to the compression-resistant spiral corrugated pipe, the compression-resistant spiral corrugated pipe main body structure is arranged, so that the compression-resistant spiral corrugated pipe has good compression resistance, the spiral corrugated assembly of the compression-resistant spiral corrugated pipe main body is integrally connected with the corrugated pipe main body, so that a compression-resistant gap area is formed, the compression-resistant supporting V-shaped block can be installed and placed, and the compression-resistant supporting V-shaped block is in a V-shaped state, so that the compression-resistant supporting effect is achieved, and the service life of the compression-resistant spiral corrugated pipe is prolonged. The pressure resistance of the joint of the spiral corrugated assembly and the corrugated tube body is effectively improved, and breaking damage caused by collapse is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of spiral bellows, in particular to a high-pressure resistant spiral bellows. Background Art

[0002] Bellows refers to a tubular elastic sensitive element connected by foldable corrugated sheets along the folding and expansion direction. Bellows are widely used in instruments and meters. Their main purpose is to be used as a measuring element of pressure measuring instruments to convert pressure into displacement or force. Spiral bellows are bellows in which the corrugations are distributed in a cylindrical spiral shape.

[0003] The existing Chinese patent CN218468438U disclosed a spiral bellows on February 10, 2023, including a bellows body and an inner polyethylene layer, the periphery of the bellows body is provided with a bellows assembly, the inner polyethylene layer is provided at the upper and lower ends of the inner wall of the bellows body, and the right side of the bellows body is provided with a clamping assembly. Compared with the existing ordinary spiral bellows, the spiral bellows can efficiently seal the connection of the bellows body during use, avoid leakage of the bellows body due to poor sealing strength, improve the sealing effect of the bellows body, and avoid the external pressure in the bellows body from being distributed on the entire pipe in time, causing damage to the bellows body, improve the strength of the bellows body, further improve the service life of the bellows body, and also increase the impact resistance of the bellows body, so that it can meet the use of low temperature conditions, increase the production speed of the bellows body, and improve the applicability of the bellows body.

[0004] However, when the above device is in use, there is a gap between the wave tube body and the corrugated component, and the gap does not have a good compressive support force, so it does not have a good pressure resistance when buried, and has a low pressure resistance problem. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a high-pressure resistant spiral bellows. The main body of the pressure-resistant spiral bellows has good pressure-resistant supporting force, which can effectively avoid the pressure-resistant reduction and damage caused by the breakage of the outer side of the pressure-resistant spiral bellows main body.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The high-pressure resistant spiral bellows comprises a front assembly head, the front assembly head is installed and connected to the front end of the pressure-resistant spiral bellows body, the rear end of the pressure-resistant spiral bellows body is provided with a rear assembly head, the periphery of the rear assembly head is provided with a hot-melt connection sleeve, and the front assembly head, the pressure-resistant spiral bellows body and the rear assembly head are provided with an internal tube cavity;

[0008] The pressure-resistant spiral bellows body includes a pressure-resistant support V-block, a bellows body, a spiral bellows component and a pressure-resistant gap. The spiral bellows component is arranged on the circumferential side of the bellows body, a pressure-resistant gap is arranged between the spiral bellows component and the bellows body, and a pressure-resistant support V-block is arranged on the inner side of the pressure-resistant gap.

[0009] Through the above technical scheme: the front assembly head and the rear assembly head at both ends of the pressure-resistant spiral corrugated pipe body can be connected by corresponding sleeve assembly, so that they can be spliced ​​and extended for use. After the rear assembly head is spliced ​​with the other front assembly head, the connection between the front assembly head and the rear assembly head can be hot-melt wrapped through the hot-melt connection sleeve on the side of the rear assembly head. In this way, external substances are prevented from entering the internal tube cavity of the pressure-resistant spiral corrugated pipe body from the connection. The pressure-resistant spiral corrugated pipe body has good compressive support force, which effectively avoids the pressure resistance reduction and damage caused by the breakage of the outer side of the pressure-resistant spiral corrugated pipe body.

[0010] The utility model is further configured such that the front assembly head includes a positioning plug-in column, a positioning convex plate, a connecting ring and a sleeve pipe head, a sleeve pipe head is provided at the front end of the connecting ring, positioning convex plates are provided at both ends of the sleeve pipe head, a positioning plug-in column is provided on the outer side of the sleeve pipe head on the connecting ring, and the connecting ring is connected to the wave tube body.

[0011] Through the above technical solution: due to the front side assembly head structure, it can be connected and assembled for use.

[0012] The utility model is further configured such that the connecting ring and the inner wall of the wave tube body are on the same straight line.

[0013] Through the above technical solution: due to the connection of the circular ring structure, it can be connected with the wave tube body for use as a whole.

[0014] The utility model is further configured such that the rear assembly head comprises a positioning assembly head shell, an installation sleeve cavity, a positioning slot and a positioning hole; a positioning hole is provided on the inner side of the positioning assembly head shell, a mounting sleeve cavity is provided inside the positioning assembly head shell, a positioning slot is provided on the inner side of the installation sleeve cavity and on the inner wall of the positioning assembly head shell; and the positioning assembly head shell is connected to the wave tube body.

[0015] Through the above technical solution: due to the rear assembly head structure, it can be connected and assembled for use.

[0016] The utility model is further configured such that the hot melt connecting sleeve comprises a hot melt cloth sleeve, a connecting ring and mounting screws, the rear end of the connecting ring is provided with a hot melt cloth sleeve, the inner side of the connecting ring is provided with mounting screws, and the connecting ring is connected to the rear assembly head through the mounting screws.

[0017] Through the above technical solution: due to the hot-melt connection sleeve structure, it can be hot-melt wrapped and used during splicing and installation.

[0018] The utility model is further configured that the connecting ring is sleeve-connected on the peripheral side of the rear assembly head.

[0019] Through the above technical solution: by connecting the ring structure, the rear assembly head can be adjusted and moved.

[0020] The utility model is further configured such that the front assembly head, the compression-resistant spiral bellows main body and the inner wall of the rear assembly head are located on the same straight line.

[0021] Through the above technical solution: due to the front assembly head, the pressure-resistant spiral bellows main body and the rear assembly head structure, it can be transported and used.

[0022] The utility model is further configured that an assembly cavity hole corresponding to the front assembly head is opened on the inner side of the rear assembly head.

[0023] Through the above technical solution: through the assembly cavity hole inside the rear assembly head, the front assembly head can be correspondingly spliced ​​and installed.

[0024] The beneficial effects of the utility model are:

[0025] 1. The main structure of the pressure-resistant spiral bellows is provided, so that the main structure has good pressure resistance. The spiral bellows component of the pressure-resistant spiral bellows main body is integrally connected with the bellows main body, thereby forming a pressure-resistant gap area, so that the pressure-resistant support V-block can be installed and placed. The pressure-resistant support V-block is in a V-shaped state, thereby playing a pressure-resistant support role, effectively improving the pressure resistance of the connection between the spiral bellows component and the bellows main body, and preventing breakage and damage caused by collapse.

[0026] 2. By providing a front assembly head structure, it can be stably installed on the rear assembly head. The connecting ring of the front assembly head is integrally connected to the wave tube body. The connecting ring is connected to the positioning convex plates at both ends of the pipe head so that it can be correspondingly sleeved in the positioning assembly head shell of the rear assembly head for assembly. During assembly, the positioning plug-in column on the connecting ring can be used to sleeve it in the positioning assembly head shell, which plays a role in positioning and assembly, making it convenient for personnel to assemble and use. The internal and external connections are fixed, making it more stable when fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a three-dimensional structural schematic diagram of the high-pressure resistant spiral bellows proposed by the utility model;

[0028] Figure 2 for Figure 1A schematic diagram of the enlarged structure of the A region of the high-pressure resistant spiral bellows proposed by the utility model;

[0029] Figure 3 This is a schematic diagram of the front assembly head structure of the high-pressure resistant spiral bellows proposed by the utility model;

[0030] Figure 4 This is a schematic diagram of the rear assembly head structure of the high-pressure resistant spiral bellows proposed by the utility model;

[0031] Figure 5 This is a schematic diagram of the structure of the hot-melt connection sleeve of the high-pressure resistant spiral corrugated pipe proposed by the utility model.

[0032] In the figure: 1. internal tube cavity; 2. front assembly head; 21. positioning plug column; 22. positioning convex plate; 23. connecting ring; 24. sleeve joint; 3. pressure-resistant spiral corrugated tube body; 31. pressure-resistant support V-block; 32. corrugated tube body; 33. spiral corrugated component; 34. pressure-resistant gap; 4. rear assembly head; 41. positioning assembly head shell; 42. installation sleeve cavity; 43. positioning slot; 44. positioning socket; 5. hot-melt connection sleeve; 51. hot-melt cloth sleeve; 52. connecting sleeve ring; 53. installation screw. DETAILED DESCRIPTION

[0033] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0034] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0035] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this patent.

[0036] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0037] Reference Figure 1-Figure 5 The high-pressure resistant spiral bellows comprises a front assembly head 2, which is installed and connected to the front end of the pressure-resistant spiral bellows body 3, and a rear assembly head 4 is arranged at the rear end of the pressure-resistant spiral bellows body 3, and a hot-melt connection sleeve 5 is arranged around the rear assembly head 4, and an internal tube cavity 1 is opened inside the front assembly head 2, the pressure-resistant spiral bellows body 3 and the rear assembly head 4;

[0038] The pressure-resistant spiral bellows body 3 includes a pressure-resistant support V-block 31, a bellows body 32, a spiral bellows assembly 33 and a pressure-resistant gap 34. The spiral bellows assembly 33 is arranged on the circumferential side of the bellows body 32, and a pressure-resistant gap 34 is arranged between the spiral bellows assembly 33 and the bellows body 32. The inner side of the pressure-resistant gap 34 is arranged with a pressure-resistant support V-block 31. The spiral bellows assembly 33 and the bellows body 32 of the pressure-resistant spiral bellows body 3 are integrally connected to form an area of ​​the pressure-resistant gap 34, so that the pressure-resistant support V-block 31 can be installed and placed. The pressure-resistant support V-block 31 is in a V-shaped state, thereby playing a pressure-resistant support role, effectively improving the pressure resistance of the connection between the spiral bellows assembly 33 and the bellows body 32, and preventing breakage and damage caused by collapse.

[0039] Specifically, the front assembly head 2 includes a positioning plug column 21, a positioning convex plate 22, a connecting ring 23 and a sleeve pipe head 24. The front end of the connecting ring 23 is provided with a sleeve pipe head 24, and the two ends of the sleeve pipe head 24 are provided with positioning convex plates 22. The outer side of the sleeve pipe head 24 is located on the connecting ring 23 and a positioning plug column 21 is provided. The connecting ring 23 is connected to the wave tube body 32. The connecting ring 23 of the front assembly head 2 is integrally connected to the wave tube body 32. The connecting ring 23 can be correspondingly sleeved in the positioning assembly head shell 41 of the rear assembly head 4 through the positioning convex plates 22 at both ends of the sleeve pipe head 24 for assembly. During assembly, the positioning plug column 21 on the connecting ring 23 can be correspondingly sleeved in the positioning assembly head shell 41, which plays a role in positioning and assembly, thereby facilitating personnel to assemble and use;

[0040] The inner wall of the connecting ring 23 and the wave tube body 32 are on the same straight line so that no obstruction occurs during use.

[0041] Specifically, the rear assembly head 4 includes a positioning assembly head shell 41, a mounting sleeve cavity 42, a positioning slot 43 and a positioning hole 44. The inner side of the positioning assembly head shell 41 is provided with a positioning hole 44, and the interior of the positioning assembly head shell 41 is provided with a mounting sleeve cavity 42. The inner side of the mounting sleeve cavity 42 is located on the inner wall of the positioning assembly head shell 41 and is provided with a positioning slot 43. The positioning assembly head shell 41 is connected to the wave tube body 32. The positioning assembly head shell 41 of the rear assembly head 4 has an area of ​​the mounting sleeve cavity 42 and the positioning slot 43, so that the sleeve pipe head 24 and the positioning protrusion 22 of the front assembly head 2 can be correspondingly socketed and assembled. The positioning assembly head shell 41 has an area of ​​the positioning hole 44, so that the positioning plug column 21 of the front assembly head 2 can be used for corresponding socket assembly. In this way, the internal and external connections are fixed, which makes it more stable when fixed.

[0042] Specifically, the hot melt connection sleeve 5 includes a hot melt cloth sleeve 51, a connection ring 52 and a mounting screw 53. The hot melt cloth sleeve 51 is arranged at the rear end of the connection ring 52, and the mounting screw 53 is arranged on the inner side of the connection ring 52. The connection ring 52 is connected to the rear assembly head 4 through the mounting screw 53. The connection ring 52 of the hot melt connection sleeve 5 is connected to the rear assembly head 4 through the mounting screw 53, so that the connection ring 52 is easy to install and place. The connection ring 52 can be hot-melt wrapped and used after assembly due to the hot melt cloth sleeve 51 on the outer side.

[0043] The connecting collar 52 is sleeve-connected on the peripheral side of the rear assembly head 4, so as to facilitate installation and disassembly.

[0044] Specifically, the inner walls of the front assembly head 2, the compression-resistant spiral bellows body 3 and the rear assembly head 4 are on the same straight line, so that no obstruction occurs during use.

[0045] Specifically, an assembly cavity hole corresponding to the front assembly head 2 is opened on the inner side of the rear assembly head 4, so that they can be connected and assembled for use.

[0046] Working principle: When in use, the front assembly head 2 and the rear assembly head 4 at both ends of the pressure-resistant spiral corrugated pipe main body 3 can be connected by corresponding sleeve assembly, so that they can be spliced ​​and extended for use. After the rear assembly head 4 is spliced ​​with the other front assembly head 2, the hot-melt connecting sleeve 5 on the side of the rear assembly head 4 can be used to hot-melt wrap the connection between the front assembly head 2 and the rear assembly head 4, so as to prevent external substances from entering the internal tube cavity 1 of the pressure-resistant spiral corrugated pipe main body 3 from the connection. The pressure-resistant spiral corrugated pipe main body 3 has good compressive support force, which can effectively avoid the pressure resistance reduction and damage caused by the breakage of the outer side of the pressure-resistant spiral corrugated pipe main body 3.

[0047] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high pressure resistant spiral bellows, comprising a front assembly head (2), characterized in that: The front assembly head (2) is installed and connected to the front end of the compression-resistant spiral corrugated pipe body (3); the rear end of the compression-resistant spiral corrugated pipe body (3) is provided with a rear assembly head (4); a hot-melt connection sleeve (5) is provided on the circumference of the rear assembly head (4); and an internal tube cavity (1) is provided inside the front assembly head (2), the compression-resistant spiral corrugated pipe body (3) and the rear assembly head (4); The pressure-resistant spiral bellows body (3) comprises a pressure-resistant support V-block (31), a bellows body (32), a spiral bellows assembly (33) and a pressure-resistant gap (34); the spiral bellows assembly (33) is arranged on the circumferential side of the bellows body (32); a pressure-resistant gap (34) is arranged between the spiral bellows assembly (33) and the bellows body (32); and a pressure-resistant support V-block (31) is arranged on the inner side of the pressure-resistant gap (34).

2. The high pressure resistant spiral bellows according to claim 1, characterized in that: The front assembly head (2) comprises a positioning plug-in column (21), a positioning convex plate (22), a connecting ring (23) and a sleeve pipe head (24); the front end of the connecting ring (23) is provided with a sleeve pipe head (24); both ends of the sleeve pipe head (24) are provided with positioning convex plates (22); the outer side of the sleeve pipe head (24) is provided with a positioning plug-in column (21) on the connecting ring (23); and the connecting ring (23) is connected to the wave tube body (32).

3. The high pressure resistant spiral bellows according to claim 2, characterized in that: The connecting ring (23) and the inner wall of the wave tube body (32) are located on the same straight line.

4. The high pressure resistant spiral bellows according to claim 1, characterized in that: The rear assembly head (4) comprises a positioning assembly head shell (41), a mounting sleeve cavity (42), a positioning slot (43) and a positioning jack (44); the inner side of the positioning assembly head shell (41) is provided with a positioning jack (44); the interior of the positioning assembly head shell (41) is provided with a mounting sleeve cavity (42); the inner side of the mounting sleeve cavity (42) is provided with a positioning slot (43) on the inner wall of the positioning assembly head shell (41); and the positioning assembly head shell (41) is connected to the wave tube body (32).

5. The high pressure resistant spiral bellows according to claim 1, characterized in that: The hot melt connection sleeve (5) comprises a hot melt cloth sleeve (51), a connection ring (52) and a mounting screw (53); the hot melt cloth sleeve (51) is arranged at the rear end of the connection ring (52); the mounting screw (53) is arranged on the inner side of the connection ring (52); the connection ring (52) is connected to the rear assembly head (4) via the mounting screw (53).

6. The high pressure resistant spiral bellows according to claim 5, characterized in that: The connecting collar (52) is sleeve-connected on the peripheral side of the rear assembly head (4).

7. The high pressure resistant spiral bellows according to claim 1, characterized in that: The inner walls of the front assembly head (2), the compression-resistant spiral corrugated pipe body (3) and the rear assembly head (4) are located on the same straight line.

8. The high pressure resistant spiral bellows according to claim 1, characterized in that: An assembly cavity hole corresponding to the front assembly head (2) is provided on the inner side of the rear assembly head (4).

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