Metal hose with lining cylinder
By adopting a structure with a lining cylinder in the metal hose, the pressure loss and damage at the connections during high-speed flow of the medium are solved, and stable and safe use in high-temperature, high-pressure and high-speed media are achieved.
Patent Information
- Application Number
- CN202421697687.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-17
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-07-17
AI Technical Summary
Existing metal hoses are prone to pressure loss and damage to the connection when the medium flows at high speed, making them difficult to use in high-temperature media.
A metal hose structure with a liner barrel is adopted, including a metal corrugated tube, a first metal lining tube and a second metal lining tube. The smooth inner wall of the liner barrel reduces the loss of media pressure and improves the stability of the connection through the flare design and the welded structure of the metal edge tube.
It effectively reduces the media pressure loss and improves the safety and scope of use of metal hoses in high-temperature, high-pressure and high-speed media occasions.
Smart Images
Figure CN222823888U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of flexible metal pipes for aerospace wind tunnel test devices, and in particular relates to a metal hose with an inner liner. Background Art
[0002] The traditional structure of a metal hose generally consists of a metal bellows, a mesh sleeve, a pipe clamp and a pipe connection. Installing a metal hose in a rigid metal pipe will increase the flexibility of the pipe, isolate the vibration of the pipe, and facilitate the installation and construction of the pipe. The metal bellows is used to form a flow channel for the medium, and the wire mesh sleeve wrapped on the outer wall of the metal bellows is used to withstand the pressure, so that the metal hose can maintain flexibility and withstand the medium pressure; at the same time, in order to facilitate welding and pipeline construction, a pipe clamp and a pipe connection are also provided. Although the use of the above-mentioned metal hose in a rigid pipeline has brought about beneficial effects, the uneven corrugations on the inner wall of the bellows will produce unbearable pressure loss when the medium flows at high speed, causing the downstream equipment to not work normally.
[0003] At present, there are the following two improved structures to address the above problems.
[0004] The first is to line the inner wall of the metal hose with a smooth thin-walled PTFE pipe, and the PTFE pipe port flange is attached to the flange sealing surface. The thin-walled PTFE pipe has a certain flexibility, and the smooth inner wall produces almost no pressure loss. Its disadvantage is that it is often difficult to withstand high temperatures. Due to the influence of the temperature resistance of the PTFE pipe, it is inconvenient to use in high-temperature media.
[0005] The second method is to line the inner wall of the metal hose with a metal snake-skin pipe. The metal snake-skin pipe has good flexibility and is relatively smoother than the inner wall of the corrugated pipe. Its two ends are welded to the connecting pipe, and there is only a small pressure loss when the medium flows through. The disadvantage is that the annular connection of the metal snake-skin pipe is buckled together. When the medium flow rate is high, the snake-skin pipe will be blown off or fall off at the connection, causing damage to downstream equipment.
[0006] Therefore, current metal hoses have shortcomings in engineering practice and are not widely applicable. Utility Model Content
[0007] In order to overcome the deficiencies of the above-mentioned technology, the purpose of the utility model is to provide a metal hose with an inner liner.
[0008] The technical solution adopted by the utility model is: a metal hose with an inner liner, comprising a metal bellows, a first metal inner liner and a second metal inner liner, one end of the second metal inner liner is inserted into the medium inlet of the metal bellows, one end of the first metal inner liner is inserted into the medium outlet of the metal bellows and a bell mouth is provided at the end of the end, and the large-diameter end of the bell mouth is arranged toward the second metal inner liner.
[0009] Furthermore, the outer fixed sleeve of the metal corrugated tube is provided with a mesh sleeve, and the two ends of the mesh sleeve are respectively fixedly provided with a first metal side strip tube and a second metal side strip tube.
[0010] Furthermore, a first metal end ring is fixedly sleeved on the first metal inner liner tube, and the first metal end ring is fixedly welded to the second metal edge strip tube; a second metal end ring is sleeved on the second metal inner liner tube, and the second metal end ring is fixedly welded to the first metal edge strip tube.
[0011] Furthermore, the first metal edge strip tube and the first metal end ring are welded together.
[0012] Furthermore, the second metal liner tube and the second metal end ring are welded together.
[0013] Furthermore, the second metal liner tube is coaxially arranged with the first metal edge strip tube.
[0014] Furthermore, the first metal liner tube and the second metal edge strip tube are coaxially arranged.
[0015] Compared with the prior art, the utility model has the following beneficial effects: a metal hose with an inner liner, the inner wall of which is smooth and the medium pressure loss is very small; the inner liner also directly serves as a connecting pipe, and no additional connecting pipe is needed, so when high-speed medium flows through, it will not be blown off or fall off like a bellows, and is safer; the parts of the utility model are all made of metal materials and have good high temperature resistance. It is not only suitable for pipelines in aerospace wind tunnel test equipment, but also suitable for high-temperature, high-pressure and high-speed medium occasions, and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION
[0017] The utility model is described in detail below with reference to the accompanying drawings and specific embodiments.
[0018] like Figure 1 As shown, a metal hose with an inner liner includes a metal bellows 3, a first metal inner liner 5 and a second metal inner liner 6, one end of the second metal inner liner 6 is inserted into the medium inlet of the metal bellows 3, one end of the first metal inner liner 5 is inserted into the medium outlet of the metal bellows 3 and a bell mouth is provided at the end of the end, and the large-diameter end of the bell mouth is arranged toward the second metal inner liner 6.
[0019] The first metal liner 5 and the second metal liner 6 are usually made of stainless steel or carbon steel.
[0020] When in use, the medium flows from the second metal liner 6 to the first metal liner 5, and the bell mouth plays the role of receiving and guiding the medium.
[0021] The metal corrugated tube 3 is fixedly sleeved with a mesh sleeve 2 on its exterior, and the two ends of the mesh sleeve 2 are respectively fixedly sleeved with a first metal edge strip tube 1 and a second metal edge strip tube 7 .
[0022] A first metal end ring 4 is fixedly sleeved on the first metal inner liner tube 5 , and the first metal end ring 4 is fixedly welded to the second metal edge strip tube 7 . A second metal end ring 8 is sleeved on the second metal inner liner tube 6 , and the second metal end ring 8 is fixedly welded to the first metal edge strip tube 1 .
[0023] The first metal edge strip tube 1 and the first metal end ring 4 are welded together.
[0024] The second metal liner 6 and the second metal end ring 8 are welded together.
[0025] The second metal liner tube 6 is coaxially arranged with the first metal edge strip tube 1 .
[0026] The first metal liner tube 5 and the second metal edge strip tube 7 are coaxially arranged.
[0027] All structural parts of the utility model are made of metal materials with smooth inner walls, which can solve the problem that the existing metal hose has large medium pressure loss and cannot be used in high-temperature medium occasions while maintaining the flexibility of the metal hose.
[0028] The above embodiments are based on the technical solution of the present utility model, and provide detailed implementation methods and specific operation processes, but the protection scope of the present utility model is not limited to the above embodiments.
Claims
1. A metal hose with an inner liner, characterized in that: It comprises a metal bellows (3), a first metal lining tube (5) and a second metal lining tube (6), wherein one end of the second metal lining tube (6) is inserted into the medium inlet of the metal bellows (3), and one end of the first metal lining tube (5) is inserted into the medium outlet of the metal bellows (3) and a bell mouth is arranged at the end of the first metal lining tube (5), and the end of the bell mouth with a large diameter is arranged toward the second metal lining tube (6).
2. A metal hose with an inner liner as claimed in claim 1, characterized in that: The outer fixed sleeve of the metal corrugated tube (3) is provided with a mesh sleeve (2), and the two ends of the mesh sleeve (2) are respectively fixedly provided with a first metal edge strip tube (1) and a second metal edge strip tube (7).
3. A metal hose with an inner liner as claimed in claim 2, characterized in that: A first metal end ring (4) is fixedly sleeved on the first metal liner tube (5), and the first metal end ring (4) is fixedly welded to the second metal edge strip tube (7); a second metal end ring (8) is sleeved on the second metal liner tube (6), and the second metal end ring (8) is fixedly welded to the first metal edge strip tube (1).
4. A metal hose with an inner liner as claimed in claim 3, characterized in that: The first metal edge strip tube (1) and the first metal end ring (4) are welded together.
5. A metal hose with an inner liner as claimed in claim 3, characterized in that: The second metal liner (6) and the second metal end ring (8) are welded together.
6. A metal hose with an inner liner as claimed in claim 3, characterized in that: The second metal lining tube (6) is coaxially arranged with the first metal edge strip tube (1).
7. A metal hose with an inner liner as claimed in claim 3, characterized in that: The first metal liner tube (5) and the second metal edge strip tube (7) are coaxially arranged.