Special type metal hose for extra-high voltage output end

Abstract

The utility model discloses a special type metal hose for an extra-high voltage output end, which comprises a spiral corrugated pipe and two end head components respectively arranged at two ends of the spiral corrugated pipe, the spiral corrugated pipe is sleeved with three layers of steel wire sleeve nets, the three layers of steel wire sleeve nets are sleeved with protective springs, and the protective springs are arranged at two ends of the spiral corrugated pipe. The end head assembly comprises a connector and a lengthened hoop, the connector is communicated with the spiral corrugated pipe, one end of the lengthened hoop is arranged on the three-layer steel wire sleeve net in a sleeving mode, and the other end of the lengthened hoop is connected with the connector. The spiral corrugated pipe body and the steel wire reinforcer are integrally wound, so that the high-pressure resistance of the hose is greatly improved, and the three layers of metal net sleeves are additionally arranged on the outer side of the metal hose body, so that the pressure resistance of the metal hose in an extra-high-pressure environment is also enhanced; the spiral corrugated pipe body and the steel wire reinforcer are integrally wound, so that burst is prevented, and the safety coefficient is improved; a protection spring is arranged, so that dead bending is prevented; and the sealing weld joint is better protected by arranging the lengthened hoop.

Description

Technical Field

[0001] This utility model belongs to the technical field of hoses for connecting ultra-high voltage output terminals, specifically relating to a special type of metal hose for ultra-high voltage output terminals. Background Technology

[0002] Existing high-pressure resistant metal hoses used for ultra-high voltage (UHV) output terminals employ annular corrugated pipes as their body, with a double-layer steel wire mesh sleeve covering the outside to withstand high pressure. However, under UHV operating conditions, the annular corrugated pipe inside the metal hose is prone to deformation and failure, resulting in the troughs sticking together and the crests being squeezed into a square shape. Therefore, there is an urgent need for a metal hose that meets the special operating requirements of UHV. Utility Model Content

[0003] In order to overcome the shortcomings of the above-mentioned technologies, the purpose of this utility model is to provide a special type of metal hose for the output end of ultra-high voltage.

[0004] The technical solution adopted by this utility model is: a special type of metal flexible hose for ultra-high voltage output end, including a spiral corrugated pipe and two end assemblies respectively disposed at both ends of the spiral corrugated pipe. The spiral corrugated pipe is fitted with three layers of steel wire mesh, and a protective spring is fitted on the three layers of steel wire mesh. The end assembly includes a connector and an extension sleeve. The connector is connected to the spiral corrugated pipe. One end of the extension sleeve is fitted on the three layers of steel wire mesh, and the other end is connected to the connector.

[0005] Furthermore, the length of the protective spring is less than the length of the three-layer steel wire mesh, and the two ends of the protective spring are respectively fixedly welded to the corresponding extended sleeves.

[0006] Furthermore, the extended sleeve is fixedly welded to the connector adjacent to it.

[0007] Furthermore, the spiral bellows is fixedly welded to the connector.

[0008] Furthermore, stainless steel wire is wound at the root of the trough of the spiral corrugated pipe.

[0009] Compared with existing technologies, this utility model has the following beneficial effects: a special type of metal hose for ultra-high voltage output, in which the spiral corrugated pipe body and steel wire reinforcement are wound together, greatly improving the high-pressure resistance of the hose; the addition of three layers of metal mesh sleeves on the outside of the metal hose body further enhances the pressure resistance of the metal hose under ultra-high voltage conditions; the spiral corrugated pipe body and steel wire reinforcement are wound together to prevent bursting and improve the safety factor; the protective spring prevents dead bends; the extended sleeve better protects the sealing weld; the welding structure between components improves product performance; the pitch of this utility model is more flexible, with better extensibility, no blockage or stiffness, and strong bending resistance, tensile strength, and lateral pressure resistance. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0011] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0012] like Figure 1 As shown, a special type of metal flexible hose for ultra-high voltage output terminals includes a spiral corrugated pipe 1 and two end assemblies respectively disposed at both ends of the spiral corrugated pipe 1. The spiral corrugated pipe 1 is fitted with a three-layer steel wire mesh 3, and a protective spring 4 is fitted on the three-layer steel wire mesh 3. The end assembly includes a connector 2 and an extension sleeve 5. The connector 2 is connected to the spiral corrugated pipe 1, and one end of the extension sleeve 5 is fitted on the three-layer steel wire mesh 3, and the other end is connected to the connector 2.

[0013] The length of the protective spring 4 is less than the length of the three-layer steel wire mesh 3, and the two ends of the protective spring 4 are respectively fixedly welded to the corresponding extended sleeves 5.

[0014] The extended sleeve 5 is fixedly welded to the connector 2 located close to it.

[0015] The spiral corrugated pipe 1 is fixedly welded to the connector 2.

[0016] This invention uses a spiral corrugated pipe instead of the annular corrugated pipe in the prior art. The spiral corrugated pipe itself has good flexibility, low longitudinal stiffness and bending stiffness. Since the main parts of the hose are made of austenitic stainless steel, the hose has excellent temperature resistance and corrosion resistance. The hose has a very wide working temperature range of -196℃ to 600℃ and can work smoothly within the bending radius.

[0017] Three layers of steel wire mesh were added to the outer layer of the spiral corrugated pipe. This further enhanced the protection of the spiral corrugated pipe, giving it better resistance to high pressure.

[0018] A stainless steel protective spring was welded to the outer layer of the three-layer steel wire mesh sleeve. Its function is to prevent the metal hose from bending sharply under high pressure.

[0019] The use of extended sleeves is to better protect the sealing welds of the spiral bellows and connectors.

[0020] The sealing weld between the spiral corrugated pipe and the connector is welded separately, and staggered from the stress weld of the three-layer steel wire mesh sleeve and the extended sleeve, which effectively improves the product performance.

[0021] Stainless steel wire 6 is wound around the root of the corrugated trough of the spiral corrugated pipe 1. The reinforcing member is made of stainless steel wire, which is wound around the root of the corrugated trough and integrated with the corrugation. The stainless steel wire serves as reinforcement, thus preventing the corrugated pipe from deforming due to compression of the corrugated trough under high pressure conditions.

[0022] This utility model adopts a structure in which the spiral corrugated pipe and the reinforcing member are wound together. This structure can make up for the defect of the corrugated pipe with intact metal mesh sleeve losing its performance under high pressure conditions, realize the requirement that the spiral corrugated pipe and the metal mesh sleeve can jointly withstand high pressure, and improve the safety of the metal hose.

[0023] The above embodiments are based on the technical solution of this utility model and provide detailed implementation methods and specific operation processes, but the protection scope of this utility model is not limited to the above embodiments.

Claims

1. A special type of metal hose for ultra-high voltage output end, characterized in that: The invention comprises a spiral corrugated pipe (1) and two end head assemblies respectively arranged at two ends of the spiral corrugated pipe (1); the spiral corrugated pipe (1) is sleeved with a three-layer steel wire mesh (3); the three-layer steel wire mesh (3) is sleeved with a protective spring (4); the end head assembly comprises a connector (2) and an extended hoop (5); the connector (2) is connected to the spiral corrugated pipe (1); one end of the extended hoop (5) is sleeved on the three-layer steel wire mesh (3); and the other end is connected to the connector (2).

2. A special type of metal hose for ultra-high voltage output end as claimed in claim 1, characterized in that: The length of the protection spring (4) is less than the length of the three-layer steel wire mesh (3), and both ends of the protection spring (4) are respectively fixedly welded to corresponding lengthened hoops (5).

3. A special type of metal hose for ultra-high voltage output end as claimed in claim 1, characterized in that: The extended sleeve (5) is fixedly welded to the connecting head (2) adjacent thereto.

4. A special type of metal hose for ultra-high voltage output end as claimed in claim 1, characterized in that: The spiral corrugated pipe (1) and the connecting head (2) are fixedly welded.

5. A special type of metal hose for ultra-high voltage output end as claimed in claim 1, characterized in that: A stainless steel wire (6) is wound around the root of the wave trough of the spiral corrugated tube (1).

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