Shock-proof hose production process and shock-proof hose

Abstract

The invention provides a shock-proof hose production process and a shock-proof hose, relates to the field of shock-proof hose production, and aims to solve the problem that the overall sealing performance of a pipeline is not comprehensively evaluated due to the fact that an existing single positive-pressure or negative-pressure detection mode cannot comprehensively simulate positive-pressure and negative-pressure working conditions in actual work of the pipeline. Performing negative pressure leakage detection on the semi-finished product; the negative pressure environment is utilized, so that external gas can enter the possible tiny leakage position of the semi-finished product more easily under the action of pressure difference, the leakage problem in the negative pressure state can be sensitively detected, and the semi-finished product which does not pass the detection can be reworked and adjusted in time; the finished product is subjected to positive pressure leakage detection, whether the finished product leaks or not under the condition that the internal pressure is higher than the external pressure is detected, positive pressure and negative pressure working conditions possibly faced by the shock-proof hose in actual use are fully considered, and the defect of a single detection mode is overcome; and the stability and the reliability of the suspension hose after the suspension hose is offline are effectively improved.

Description

Technical Field

[0001] The invention relates to the field of shock-absorbing tube production, and in particular to a shock-absorbing hose production process and a shock-absorbing hose. Background Art

[0002] Metal corrugated hose components have become key connection components for conveying fluids in many industries due to their multi-directional and multi-angle compensation capabilities and their ability to withstand higher pressures and temperatures. The air tightness of metal corrugated hoses, as an important indicator of their performance, is crucial to the selection of air tightness detection methods. Traditional ordinary metal bellows have a small cavity volume, so it is more convenient to use a negative pressure helium mass spectrometry method that evacuates the cavity and sprays helium outside the cavity.

[0003] A positive pressure helium mass spectrometer air tightness detection device for a metal corrugated hose assembly is disclosed in a Chinese patent (publication number CN 218823011 U, publication date 20230407), including a metal corrugated hose assembly, a sealing device and a sealing cover; the sealing device includes an inflatable end seal and a sealing end seal, and the inflatable end seal is sealed by a sealing ring on an extrusion slope, and the helium inflator and the helium mass spectrometer are connected at both ends, and a positive pressure helium mass spectrometer air tightness detection device is used to perform air tightness detection on the finished metal corrugated hose assembly. In practical applications, many pipeline systems are not always in a positive pressure state, and may experience a negative pressure stage or pressure fluctuations. For example, during the start-up and stop of some fluid delivery systems, or under certain special working conditions, negative pressure may occur in the pipeline, and it is in a positive pressure state during normal operation, such as a shock-absorbing hose used on equipment such as a compressor. The shock-absorbing hose body is composed of a metal bellows, which can weaken the vibration and noise transmitted by the conveying medium of equipment such as the compressor. The conventional single positive pressure or negative pressure testing method for corrugated hoses has certain shortcomings. Only positive pressure testing cannot simulate these negative pressure conditions, and may miss leakage problems that only occur under negative pressure conditions, resulting in an incomplete assessment of the overall sealing of the pipeline, and unable to ensure the safe operation of the pipeline under actual complex conditions; because negative pressure makes the external pressure greater than the internal pressure, it will mask the tendency of internal leakage of the pipeline, and cannot accurately reflect the actual sealing performance of the pipeline under positive pressure working conditions, and may miss some leakage hazards that only occur under positive pressure conditions; resulting in the shock-absorbing hose being unstable and unreliable when used after it is offline. Summary of the invention

[0004] The purpose of the present invention is to address the defects of the prior art and provide a shock-absorbing hose production process and a shock-absorbing hose. A step-by-step detection method is adopted to first perform a negative pressure leakage detection on the semi-finished product and then perform a positive pressure leakage detection on the finished product. This fully considers the positive and negative pressure conditions that the shock-absorbing hose may face in actual use, makes up for the defects of a single detection method, comprehensively evaluates the sealing performance of the shock-absorbing hose, and effectively improves the stability and reliability of the shock-absorbing hose after it rolls off the production line.

[0005] The first object of the present invention is to provide a production process for a shock-absorbing hose, which adopts the following scheme:

[0006] include:

[0007] The welding head is welded to one end of the welding ring, and the other end of the welding ring is welded to the bellows to obtain a semi-finished product;

[0008] Conduct negative pressure leakage test on semi-finished products, and rework and adjust those that fail the negative pressure leakage test;

[0009] The semi-finished product that has passed the negative pressure leakage detection is placed into the mesh sleeve, and outer buckles are installed at both ends of the mesh sleeve to fix the relative position of the mesh sleeve and the semi-finished product;

[0010] The outer buckle ring is welded to obtain a finished product;

[0011] The finished products are tested for positive pressure leaks. Those that fail the test are reworked and adjusted, while those that pass the test are removed from the production line.

[0012] Furthermore, after obtaining the semi-finished product, the welding position is polished.

[0013] Furthermore, the negative pressure leakage detection of the semi-finished product includes: using negative pressure helium detection equipment to detect the semi-finished product after welding.

[0014] Furthermore, the fixing of the relative positions of the mesh sleeve and the semi-finished product comprises: sleeve the mesh sleeve outside the welding ring, sleeve the outer buckle ring outside the mesh sleeve, and press-fit the outer buckle ring to fix the positions of the mesh sleeve and the welding ring.

[0015] Furthermore, one axial end of the outer buckle ring extends to the outside of the welding ring, and the other axial end extends to the outside of the bellows connected to the welding ring. A groove for press fitting is provided outside the welding ring.

[0016] Furthermore, after the outer buckle ring is pressed together, one end is connected to the welding ring by welding.

[0017] Furthermore, both ends of the bellows are connected with welding heads through welding rings, one end of the mesh sleeve extends to the welding ring at one end of the bellows, and the other end extends along the axial direction of the bellows to the welding ring at the other end of the bellows.

[0018] Furthermore, the positive pressure leakage detection of the finished product includes: detecting the finished product using a positive pressure helium detection device.

[0019] Furthermore, the negative pressure leakage detection and the positive pressure leakage detection are both full inspections.

[0020] The second object of the present invention is to provide a shock-absorbing hose produced using the shock-absorbing hose production process described in the first object.

[0021] Compared with the prior art, the present invention has the following advantages and positive effects:

[0022] The existing single positive pressure or negative pressure detection method cannot fully simulate the positive and negative pressure conditions in the actual operation of the pipeline, resulting in an incomplete assessment of the overall sealing of the pipeline. A step-by-step detection method is adopted to first perform negative pressure leakage detection on the semi-finished product; using the negative pressure environment, the external gas can more easily enter the possible tiny leaks in the semi-finished product under the action of the pressure difference, thereby sensitively detecting leakage problems under negative pressure, and reworking and adjusting the semi-finished products that fail the test in time to avoid problems entering the subsequent processes; continue processing to obtain the finished product, and perform positive pressure leakage detection on the finished product to detect whether there is leakage when the internal pressure of the finished product is higher than the external pressure. The step-by-step detection method fully considers the positive and negative pressure conditions that the shock absorber hose may face in actual use, makes up for the defects of the single detection method, comprehensively evaluates the sealing performance of the shock absorber hose, and effectively improves the stability and reliability of the shock absorber hose after it comes off the production line.

[0023] During the manufacturing process of the shock-absorbing hose, especially after welding and other processes, there may be some potential weak points. In the present invention, negative pressure testing is first performed, and the pressure acts from the outside to the inside. The pressure impact on the internal structure of the semi-finished product is relatively small, and it is not easy to further expand these potential weak points or cause new damage. If positive pressure testing is performed first, the larger internal pressure may cause the original tiny defects to expand or even cause new ruptures, which will cause irreversible damage to some structures on the semi-finished product and affect the final quality and performance of the shock-absorbing hose. In addition, performing negative pressure testing first and then positive pressure testing can more realistically simulate the pressure changes of the product in actual use, and more comprehensively test the sealing and reliability of the product under different pressure conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0025] Figure 1 It is a schematic diagram of a shock absorbing hose corresponding to the shock absorbing hose production process in one or more embodiments of the present invention.

[0026] Figure 2 Schematic diagram of a welding ring in one or more embodiments of the present invention.

[0027] Among them, 1. welding head; 2. welding ring; 3. outer buckle ring; 4. mesh sleeve; 5. bellows. DETAILED DESCRIPTION

[0028] Example 1

[0029] In a typical embodiment of the present invention, Figure 1-Figure 2 As shown, a production process for a shock-absorbing hose is provided.

[0030] The existing single positive pressure or negative pressure detection method has shortcomings and cannot fully simulate the positive and negative pressure conditions in the actual operation of the pipeline, resulting in an incomplete assessment of the overall sealing of the pipeline and an inability to ensure the safe operation of the pipeline under complex working conditions. Based on this, this embodiment provides a shock-absorbing hose production process, which adopts a step-by-step detection method to first perform a negative pressure leakage detection on the semi-finished product formed by welding the welding head 1, welding ring 2 and bellows 5; then continue to install other accessories to obtain the finished product, and then perform a positive pressure leakage detection on the finished product, which fully considers the positive and negative pressure conditions that the shock-absorbing hose may face in actual use, makes up for the defects of a single detection method, comprehensively evaluates the sealing performance of the shock-absorbing hose, and effectively improves the stability and reliability of the shock-absorbing hose after it is offline.

[0031] like Figure 1 and Figure 2 As shown, the production process of the shock absorber hose includes:

[0032] The welding head 1 is welded to one end of the welding ring 2, and the other end of the welding ring 2 is welded to the bellows 5 to obtain a semi-finished product;

[0033] Conduct negative pressure leakage test on semi-finished products, and rework and adjust those that fail the negative pressure leakage test;

[0034] The semi-finished product that has passed the negative pressure leakage detection is placed into the mesh sleeve 4, and outer buckle rings 3 are installed at both ends of the mesh sleeve 4 to fix the relative position of the mesh sleeve 4 and the semi-finished product;

[0035] Welding the outer buckle ring 3 to obtain a finished product;

[0036] The finished products are tested for positive pressure leaks. Those that fail the test are reworked and adjusted, while those that pass the test are removed from the production line.

[0037] It should be pointed out that in the production process of the shock-absorbing hose, this embodiment first uses negative pressure equipment for inspection, and then uses positive pressure equipment for inspection. Compared with a single positive pressure test or a negative pressure test, it can simulate a function that is more in line with the actual use scenario of the shock-absorbing hose. A single negative pressure test is mainly to detect the situation where external gas enters the inside of the pipeline. Some potential problems of leakage to the outside caused by material aging, corrosion, etc. in the pipeline may not be effectively detected under negative pressure. Because the negative pressure makes the external pressure greater than the internal pressure, it will cover up the trend of leakage from the inside of the pipeline, and cannot accurately reflect the actual sealing performance of the pipeline under the positive pressure working state, and may miss some leakage hazards that only appear under positive pressure conditions. Only positive pressure testing cannot simulate these negative pressure conditions, and may miss leakage problems that only appear under negative pressure conditions, resulting in an incomplete assessment of the overall sealing of the pipeline, and cannot guarantee the safe operation of the pipeline under actual complex conditions.

[0038] Based on this, in this embodiment, the negative pressure equipment is used for inspection first, and then the positive pressure equipment is used for inspection. During the negative pressure inspection, the object to be inspected is placed in a closed negative pressure environment and filled with a certain amount of test gas. If there is a leak in the object, the test gas will enter the interior of the object from the leak under the action of the pressure difference. Then, a leak detector or other equipment is used to detect whether there is test gas inside the object, and the content of the test gas to determine whether there is a leak and the extent of the leak.

[0039] The main purpose is to detect whether there are tiny holes or cracks in the shock absorber hose under negative pressure. Because in actual use, the shock absorber hose may face the situation where the internal pressure is lower than the external pressure. For example, in some special working environments or system operation stages, detecting leakage problems under negative pressure in advance can avoid leakage failures caused by negative pressure during use.

[0040] During positive pressure testing, the inside of the object being tested is filled with test gas with a pressure higher than the external environment, causing the test gas to leak from the inside to the outside. If there is a leak, the test gas will diffuse into the surrounding environment through the leak, and then the leaked test gas will be captured and analyzed by the testing equipment.

[0041] Focuses on testing the sealing performance under positive pressure, that is, when the internal pressure of the shock absorber hose is higher than the external pressure. This is more in line with the pressure state of the shock absorber hose in most actual working scenarios. For example, in hydraulic systems or other systems with pressure transmission, the shock absorber hose is usually subjected to internal pressure. Positive pressure leakage detection can effectively detect possible leakage problems under positive pressure.

[0042] By complementing the detection effects of negative pressure detection and positive pressure detection, negative pressure leakage detection has a better detection effect for leaks that have defects such as tiny channels and pores inside and will only open or expose under negative pressure. It can detect some subtle leaks that may be covered up or difficult to detect during positive pressure detection, especially for those situations where the leakage channel may be temporarily squeezed and closed due to positive pressure. Positive pressure leakage detection can detect leaks that will only occur under positive pressure, such as leaks caused by deformation of welds, seals, etc. due to greater stress under positive pressure. Positive pressure leakage detection can simulate the pressure conditions in actual work and more directly test the sealing reliability of the shock absorber hose under normal working pressure.

[0043] Conducting a negative pressure leak test first and then a positive pressure leak test is equivalent to conducting a comprehensive test on the shock absorber hose from two different pressure angles, which can cover more types of leaks and reduce the possibility of missed detection, thereby greatly improving the accuracy and reliability of the test results. Through the mutual verification and supplementation of the two different pressure tests, the sealing performance of the shock absorber hose can be more comprehensively evaluated to ensure that the product quality meets strict requirements.

[0044] It should be pointed out that the necessity of performing negative pressure leakage detection first and then positive pressure leakage detection in this embodiment is explained. Compared with positive pressure detection, negative pressure detection can more sensitively detect potential tiny leakage points in the early stage of shock absorber tube production, ensure that the quality of shock absorber tube meets the requirements, and avoid products with leakage hazards from entering the next production link. After the shock absorber hose is initially processed into a semi-finished product, the structural strength of the welding part and other parts may not be completely stable. During negative pressure detection, the pressure is applied from the outside to the inside, and the pressure impact on the internal structure of the semi-finished product is relatively small, which is not easy to further expand the potential weak points or cause new damage. If positive pressure detection is performed first, the larger internal pressure may cause the original tiny defects to expand or even cause new ruptures, which will cause irreversible damage to some structures on the semi-finished product, affecting the final quality and performance of the shock absorber hose; in addition, performing negative pressure detection first and then positive pressure detection can more realistically simulate the pressure changes of the product in actual use.

[0045] In addition, during negative pressure testing, external gas carries possible impurities into the shock absorber tube, and these impurities are usually concentrated in relatively easy-to-clean locations. If positive pressure testing is performed first, the positive pressure may blow the impurities and debris that originally existed in the shock absorber tube into some corners or gaps that are difficult to clean, which may not only affect the normal use of the shock absorber hose, but may also cause damage to equipment such as the compressor during subsequent use, increasing the risk of equipment failure.

[0046] For example, in a compressor system supported by a spring shock pad, the shock-absorbing hose is used in the suction and exhaust pipes. During actual operation, it may first experience a negative pressure stage and then be in a positive pressure state. For example, during the start and stop of the compressor, due to the change in the flow of the refrigerant, the pressure in the suction and exhaust pipes may be briefly negative, while it is in a positive pressure state during normal operation of the compressor. The detection sequence of negative pressure first and then positive pressure can more realistically simulate the pressure change process of the shock-absorbing hose in actual use, and more comprehensively test its sealing and reliability under different pressure conditions.

[0047] Next, the detailed production process of the shock-absorbing hose production process is described.

[0048] After obtaining the semi-finished product, the welding position is polished. The welding slag, burrs, etc. generated during the welding process are removed to make the surface of the welding smooth and flat; the welding stress concentration is eliminated, the strength and fatigue resistance of the welding part are enhanced; the adhesion of corrosive media is reduced, and the corrosion resistance is improved; the flow conditions during fluid transportation are optimized, and the resistance and turbulence are reduced; it is convenient for subsequent testing and improves the detection accuracy. It can improve the appearance quality of the product, improve the performance of the welding part, and provide good conditions for subsequent testing.

[0049] During polishing, although the polishing process is to optimize the quality of the weld, new microscopic defects such as tiny cracks may be introduced during the polishing process due to improper operation. At the same time, some problems that originally existed but were not apparent during the welding process may be exposed, such as internal pores. Negative pressure leak detection after polishing can utilize the high permeability of the test gas to more sensitively detect these defects that may cause leaks at a lower pressure, so as to detect and deal with the problem in time, avoiding the problem being discovered after the subsequent process is completed, resulting in greater cost waste.

[0050] Use negative pressure helium inspection equipment to inspect semi-finished products after welding, and rework and adjust those that fail the negative pressure leakage test. By testing whether there are tiny pores or cracks in the shock absorber hose under negative pressure, simulate the negative pressure environment that may occur in some actual use, and discover potential problems in advance. Timely discover and solve the leakage hazards under negative pressure to prevent problems from entering the subsequent processes and improve product quality and reliability.

[0051] like Figure 1As shown, the mesh sleeve 4 is a metal braided sleeve, the mesh sleeve 4 is sleeved outside the welding ring 2, the outer buckle ring 3 is sleeved outside the mesh sleeve 4, and the mesh sleeve 4 and the welding ring 2 are fixed by pressing the outer buckle ring 3. One end of the outer buckle ring 3 axially extends to the outside of the welding ring 2, and the other end extends to the outside of the bellows 5 connected to the welding ring 2. The welding ring 2 is provided with a groove for press fitting. After the outer buckle ring 3 is pressed, one end is connected to the welding ring 2 by welding. It can enhance the structural strength and stability of the shock-absorbing hose; protect the internal bellows 5 and other components; further fix the relative positions between the components to ensure the firmness of the overall structure. It improves the overall strength and durability of the shock-absorbing hose, and ensures that the components will not be displaced or loosened during use.

[0052] After the mesh sleeve 4 and the outer buckle ring 3 are installed and fixed, the outer buckle ring 3 is welded to obtain a finished product. The outer buckle ring 3 is connected more firmly with the welding ring 2 and other components to form a complete finished product structure. The final structural stability and reliability of the shock-absorbing hose are ensured to meet the actual use requirements.

[0053] The finished products are tested with positive pressure helium testing equipment. The finished products that fail the positive pressure leakage test are reworked and adjusted, and the finished products that pass the positive pressure leakage test are offline. The test is conducted under positive pressure, that is, when the internal pressure of the shock absorber hose is higher than the external pressure. The positive pressure working conditions in actual work are simulated to ensure the sealing reliability of the product under normal working pressure. The sealing performance of the finished product under positive pressure working conditions is guaranteed, product quality is improved, and the safety and stability of the product in actual use are ensured.

[0054] Both negative pressure leak detection and positive pressure leak detection are full inspections. This ensures that every product meets quality requirements, promptly detects and removes products that do not meet standards, and prevents products with quality problems from entering the market. This ensures the overall quality stability of the product and improves the product's market competitiveness and user satisfaction.

[0055] Example 2

[0056] In another typical embodiment of the present invention, Figure 1-Figure 2 As shown, a shock-absorbing hose is provided.

[0057] The shock-absorbing hose in this embodiment is produced by the shock-absorbing hose production process in Example 1. The structure of the shock-absorbing hose is as follows: Figure 1 As shown, the structure of the welding ring 2 of the shock-absorbing hose is as follows Figure 2 shown.

[0058] When the shock-absorbing hose finally rolls off the assembly line, it is a tightly structured and fully functional component. The bellows 5 is the main part of the shock-absorbing hose, made of metal, and can effectively reduce the vibration and noise transmitted by the conveying medium of equipment such as compressors. The two ends of the bellows 5 are connected to the welding head 1 through welding rings 2. The welding part between the welding ring 2 and the bellows 5 is polished, and the surface is smooth and flat, which not only improves the appearance quality, but also eliminates stress concentration, enhances corrosion resistance, and ensures stability under complex working conditions.

[0059] The welding heads 1 are located at both ends of the shock-absorbing hose and are firmly welded to the welding rings 2, playing the role of connecting other pipes or equipment to ensure that the medium can flow smoothly. The mesh sleeve 4 is set outside the welding ring 2 and extends along the axial direction of the bellows 5, with one end extending to the welding ring 2 at one end of the bellows 5 and the other end extending to the welding ring 2 at the other end of the bellows 5, wrapping the bellows 5 and the welding ring 2 therein, thereby enhancing the overall strength of the shock-absorbing hose and protecting the internal bellows 5 from damage by external factors.

[0060] The outer buckle ring 3 is sleeved outside the mesh sleeve 4, with one axial end extending outside the welding ring 2 and the other end extending outside the bellows 5 connected to the welding ring 2. A groove for the outer buckle ring 3 to be pressed and matched is provided outside the welding ring 2. The outer buckle ring 3 fixes the position of the mesh sleeve 4 and the welding ring 2 by pressing, and one end of the outer buckle ring 3 is connected to the welding ring 2 by welding after pressing, which further ensures that the relative positions of the components are fixed, making the entire structure more stable.

[0061] Through structural combination, the shock-absorbing hose not only ensures the shock-absorbing and noise-reducing functions, but also has good sealing, structural strength and stability, meeting the requirements for use under complex working conditions in multiple fields such as aerospace, industrial fluid transportation, refrigeration and air-conditioning, etc.

[0062] Shock-absorbing hoses can be used in refrigeration and air-conditioning systems. Compressors are the main equipment that generates vibration and noise. Shock-absorbing hoses can be installed on the suction and exhaust pipes of the compressor. For example, the compressor supported by the spring shock pad mentioned above requires the installation of shock-absorbing hoses to isolate the vibration and noise of the compressor and prevent it from spreading to the entire system through the refrigerant pipeline, thereby improving the comfort and stability of the system operation and reducing the impact on the surrounding environment.

[0063] The engine, transmission and other parts of the car will generate vibration and noise during operation. Shock-absorbing hoses can be used in the fuel system, cooling system, exhaust system, etc. of the car. For example, the soft connection part in the exhaust system can effectively buffer the vibration of the engine, reduce the noise transmitted to the car body, improve the riding comfort in the car, and also protect the pipeline system from vibration fatigue damage and extend its service life.

[0064] In various industrial production, many fluid delivery systems require shock-absorbing hoses. For example, in the pipeline system of the petrochemical industry, pipelines used to transport various chemical raw materials, oil products and other media are usually equipped with shock-absorbing hoses at the inlet and outlet of pumps, compressors and other equipment to absorb the vibration generated during the operation of the equipment, prevent the vibration from being transmitted through the pipeline and causing damage to the pipeline or loose connection, and also reduce noise to ensure production safety and stable operation.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A shock-absorbing hose production process, characterized in that: include: The welding head is welded to one end of the welding ring, and the other end of the welding ring is welded to the bellows to obtain a semi-finished product; Conduct negative pressure leakage test on semi-finished products, and rework and adjust those that fail the negative pressure leakage test; The semi-finished product that has passed the negative pressure leakage test is placed into the mesh sleeve, and outer buckles are installed at both ends of the mesh sleeve to fix the relative positions of the mesh sleeve and the semi-finished product; The outer buckle ring is welded to obtain a finished product; The finished products are tested for positive pressure leaks. Those that fail the test are reworked and adjusted, while those that pass the test are removed from the production line.

2. The shock-absorbing hose production process according to claim 1, characterized in that: After the semi-finished product is obtained, the welding position is polished.

3. The shock-absorbing hose production process according to claim 1 or 2, characterized in that: The negative pressure leakage detection of the semi-finished product includes: using negative pressure helium detection equipment to detect the semi-finished product after welding.

4. The shock-absorbing hose production process according to claim 1, characterized in that: The relative positions of the mesh sleeve and the semi-finished product are fixed by: sleeve the mesh sleeve outside the welding ring, sleeve the outer buckle ring outside the mesh sleeve, and fix the positions of the mesh sleeve and the welding ring by pressing the outer buckle ring.

5. The process for producing a shock-absorbing hose according to claim 4, characterized in that: One axial end of the outer buckle ring extends to the outside of the welding ring, and the other axial end extends to the outside of the bellows connected to the welding ring. A groove for press fitting is provided outside the welding ring.

6. The process for producing a shock-absorbing hose according to claim 5, characterized in that: After the outer buckle ring is pressed together, one end is connected to the welding ring by welding.

7. The shock-absorbing hose production process according to claim 1, characterized in that: The two ends of the bellows are respectively connected with welding heads through welding rings. One end of the mesh sleeve extends to the welding ring at one end of the bellows, and the other end extends along the axial direction of the bellows to the welding ring at the other end of the bellows.

8. The process for producing a shock-absorbing hose according to claim 1 or 7, characterized in that: The positive pressure leakage detection of the finished product includes: using positive pressure helium detection equipment to detect the finished product.

9. The process for producing a shock-absorbing hose according to claim 1, characterized in that: The negative pressure leakage detection and the positive pressure leakage detection are both full inspections.

10. A shock-absorbing hose, characterized in that: The shock-absorbing hose is produced by the shock-absorbing hose production process as described in any one of claims 1 to 9.

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