A pipe shock and vibration isolation hanger and method of assembling the same

Abstract

The application discloses a pipeline vibration isolation and impact resistance support hanger and an assembling method thereof, and belongs to the technical field of pipeline vibration isolation and impact resistance. The support hanger is composed of a vibration isolation assembly, an impact resistance assembly and a supporting assembly. The vibration isolation assembly is sleeved with a pipeline and adopts a metamaterial vibration isolation structure. The impact resistance assembly is vulcanizedly connected with the vibration isolation assembly and contains a cylinder, a piston, a buffer cavity, a limiting rod and a limiting pad. The supporting assembly is welded and fixed with the impact resistance assembly. During assembly, the components are assembled first, and then the impact resistance assembly is connected with the vibration isolation assembly and the supporting assembly respectively. During work, the vibration isolation structure isolates low-frequency vibration of the pipeline. When impacted, the piston compresses the buffer cavity medium to realize primary buffering, and the limiting rod contacts the limiting pad to realize secondary buffering. The application has the advantages of efficient vibration isolation and strong impact resistance performance, reliable structure, oil dirt resistance, and suitability for pipeline support in an impact environment, and can improve system stability and safety.

Description

Technical Field

[0001] This invention belongs to the field of pipeline vibration isolation and impact resistance technology, specifically relating to a pipeline vibration isolation and impact resistance support and its assembly method. Background Technology

[0002] In the installation of piping systems in mechanical systems, pipe supports are typically used to fix the pipes to the base to isolate the transmission of pipe vibration to the base. Most existing pipe supports only have a single vibration isolation function. When the mechanical system is subjected to external impact, the pipes and their supports are prone to irreversible structural damage, or even complete loss of functionality, failing to simultaneously meet the dual requirements of vibration isolation and impact resistance. To overcome these technical shortcomings, there is an urgent need to develop a pipe support that combines efficient vibration isolation with strong impact resistance, significantly improving the impact resistance of mechanical systems and reducing the risk of damage to pipes and auxiliary equipment from external impacts. Summary of the Invention

[0003] I. Purpose of the Invention The present invention aims to overcome the technical shortcomings of existing pipeline supports and hangers that can only isolate vibration and cannot effectively resist impact. It provides a pipeline vibration isolation and impact-resistant support and hanger and its assembly method, so that the support and hanger can have both vibration isolation and impact resistance functions, optimize the low-frequency vibration isolation effect, and improve the working stability and structural safety of the mechanical system under impact environment.

[0004] II. Technical Solution (a) Pipeline vibration isolation and impact protection supports The pipeline vibration isolation and impact-resistant support provided by the present invention consists of a vibration isolation component, an impact-resistant component, and a support component. The vibration isolation component is fitted onto the outside of the pipeline to achieve vibration isolation, the impact-resistant component is connected to the vibration isolation component by vulcanization to achieve impact resistance, and the support component is connected to the impact-resistant component by welding to achieve support for the pipeline.

[0005] (1) Vibration isolation components The vibration isolation assembly includes an upper retaining ring, a retaining ring fastener, a lower retaining ring, and a vibration isolation structure.

[0006] Both the upper and lower retaining rings are semi-circular metal strips with connecting structures at both ends. Their diameter and width are the same. The connecting structures have openings, and the fastening connection is achieved through retaining ring fasteners. The snap ring fastener consists of a screw, nut, flat washer, and spring washer; The vibration isolation structure adopts a metamaterial structure with a width consistent with the lower retaining ring. The lower retaining ring and the screw of the retaining ring fastener are connected as one unit through vulcanization to achieve vibration isolation.

[0007] (2) Impact-resistant components The impact-resistant assembly includes a cylinder, vent hole, connecting rod, piston, piston seal, limit rod, oil inlet, oil inlet threaded connector, oil inlet hole, end cap, end cap seal, limit gasket, bolt, and buffer chamber.

[0008] The cylinder has a cylindrical cavity structure with threaded holes evenly distributed along the axis at the lower end for fastening to the end cover with bolts; a connecting rod passes through a circular hole at the center of the top; vent holes are provided on both sides to connect the upper part of the piston with the external air pressure of the cylinder; an oil injection hole is provided on the lower right side for connecting to an external oil source through an oil injection port and an oil injection port threaded connector to adjust the pressure in the buffer chamber.

[0009] The piston is cylindrical with two annular grooves on the outer side of the middle section for installing piston seals; the connecting rod and the limiting rod are both solid cylinders, and the three are welded coaxially.

[0010] The end cap diameter matches the cylinder outer diameter, and through holes are evenly arranged along the axis, corresponding to the threaded holes on the cylinder; two annular grooves are opened on the upper outer side for installing the end cap sealing ring and fastening it to the cylinder bolts.

[0011] The limiting pad is a circular rubber plate that is vulcanized and fixed to the bottom of the inner side of the end cap to provide secondary cushioning.

[0012] The bolts are countersunk bolts, used to fasten the end caps and cylinder barrels.

[0013] The buffer chamber is formed by the cylinder, piston, piston seal ring, end cover, and end cover seal ring. The oil pressure is regulated by an external oil source connected through an oil injection port, which has a one-way sealing function. In the initial installation state, adjusting the initial oil pressure in the buffer chamber maintains a certain distance between the limit rod and the limit pad.

[0014] The oil inlet is a high-pressure cylindrical pipeline used to connect to an external oil source, and is connected to the cylinder via a threaded connector at the oil inlet.

[0015] Both the piston seal and the end cap seal are made of rubber and are used with silicone grease, making them suitable for oily environments.

[0016] (3) Support components The support assembly includes a circular steel ring and a mounting plate. The circular steel ring is a cylindrical shell structure that is welded to the circular mounting plate. The mounting plate is a circular plate structure with chamfered upper and lower edges and a diameter slightly larger than the outer diameter of the circular steel ring. The mounting plate is welded and fixed to the external mounting base.

[0017] (II) Assembly method of pipeline vibration isolation and impact resistance support (1) The vibration isolation structure is vulcanized to connect the lower retaining ring and the screw of two sets of retaining ring fasteners. The screw is pre-installed with nuts and flat washers, and then the upper and lower retaining rings are connected with retaining ring fasteners to complete the assembly of the vibration isolation component. (2) Weld the connecting rod, piston, and limit rod coaxially. After applying silicone grease to the piston seal ring, insert it into the annular groove on the outside of the piston. Install the whole assembly into the cylinder and make the connecting rod pass through the round hole at the top of the cylinder. Fix the oil inlet to the cylinder through the oil inlet threaded joint. (3) Fix the limiting pad to the bottom of the inner side of the end cover by vulcanization. After applying silicone grease to the end cover sealing ring, insert it into the circular groove opened on the end cover. Connect the end cover with the cylinder and tighten the bolts diagonally to complete the assembly of the impact-resistant components. (4) Weld the circular steel ring to the mounting plate to complete the fabrication of the support assembly; (5) Final assembly: vulcanize the connecting rod to the vibration isolation structure, weld the ring steel to the end cap, and complete the overall assembly of the support and hanger; before final assembly, inject hydraulic oil into the buffer chamber through the oil injection hole and adjust the initial pressure.

[0018] III. Working Principle When the pipeline vibration isolation and impact-resistant support of the present invention is in operation, it achieves the dual functions of vibration isolation and impact resistance through the synergistic action of its components: the vibration generated by the pipeline is transmitted to the vibration isolation component, where the vibration energy is absorbed by the vibration isolation structure using a metamaterial structure, and the low-frequency vibration is effectively isolated by utilizing its inherent frequency characteristics, preventing the vibration from being transmitted to the support component and the external base; when the mechanical system is subjected to external impact, the impact force is transmitted through the vibration isolation component to the connecting rod of the impact-resistant component, pushing the connecting rod to drive the piston to move axially along the inside of the cylinder. During the piston movement, the medium in the buffer chamber is compressed, causing the oil pressure in the buffer chamber to gradually increase. The piston movement speed is quickly reduced by the oil pressure resistance, achieving the first buffering of the impact force; when the impact force is too large and the piston moves to the preset stroke, the limiting rod contacts the limiting pad on the inside of the end cover. The limiting pad further absorbs the impact energy through its own elastic deformation, achieving the second buffering, thereby greatly reducing the impact force on the pipeline and the support itself, ensuring the structural safety and working stability of the pipeline and the support. The support components provide stable support for the entire support frame by welding the ring steel to the end cap and welding the mounting plate to the external base, ensuring the reliability of the coordinated operation of each component.

[0019] Beneficial effects The pipeline vibration isolation and impact-resistant support provided by this invention achieves the dual functions of vibration isolation and impact resistance through the coordinated operation of vibration isolation components, impact-resistant components, and support components. The natural frequency of the support is about 10Hz, and it has excellent low-frequency vibration isolation effect, which can effectively isolate the transmission of pipeline vibration to the base; When subjected to external impact, the oil pressure in the buffer chamber gradually increases as the piston moves, rapidly reducing the piston's movement speed and achieving primary buffering; when the impact force is too large, the limit rod contacts the limit pad, achieving secondary buffering and significantly absorbing the impact energy. The overall structure is reliably connected and stably sealed, allowing it to operate for extended periods in oily environments. This significantly enhances the mechanical system's impact resistance and effectively reduces the risk of structural damage and functional failure caused by external impacts. Attached Figure Description

[0020] Figure 1 This is a front view of the pipeline vibration isolation and impact-resistant support bracket of the present invention; Figure 2 This is a side view of the pipeline vibration isolation and impact-resistant support bracket of the present invention; Figure 3 This is a schematic diagram of the vibration isolation component of the present invention; Figure 4 This is a schematic diagram of the impact-resistant component of the present invention; Figure 5 This is a schematic diagram of the support components of the present invention; Figure 6 This is a cross-sectional view of the end cap of the present invention.

[0021] Explanation of reference numerals in the attached figures: 100-Vibration isolation component; 101-Upper retaining ring; 102-Retaining ring fastener; 103-Lower retaining ring; 104-Vibration isolation structure; 200-Impact-resistant component; 201-Cylinder; 202-Ventilation port; 203-Connecting rod; 204-Piston; 205-Piston seal ring; 206-Limit rod; 207-Oil inlet; 208-Oil inlet threaded connector; 209-Oil inlet hole; 210-End cap; 211-End cap seal ring; 212-Limit gasket; 213-Bolt; 214-Buffer chamber; 300-Support component; 301-Ring steel; 302-Mounting pad. Detailed Implementation

[0022] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art can refer to this section for implementation.

[0023] (1) Overall structure The pipeline vibration isolation and impact-resistant support consists of a vibration isolation component 100, an impact-resistant component 200, and a support component 300. The vibration isolation component 100 is fitted onto the pipeline, the impact-resistant component 200 is vulcanized to the vibration isolation component 100, and the support component 300 is welded to the impact-resistant component 200.

[0024] (2) Vibration isolation assembly 100 Upper retaining ring 101: a semi-circular metal strip, 160mm in diameter and 50mm in width, with M12 holes at both ends; Lower retaining ring 103: The dimensions are the same as the upper retaining ring 101, and the openings at both ends are M12. Snap ring fastener 102: It uses an M12 screw, nut, flat washer, and spring washer to fasten the upper snap ring 101 and the lower snap ring 103; Vibration isolation structure 104: 220mm in length, with the same width as the lower retaining ring, using a metamaterial structure, and connected to the lower retaining ring 103 and the screw through vulcanization, providing vibration isolation function, with a natural frequency of approximately 10Hz.

[0025] (3) Impact-resistant components 200 Cylinder 201: Cylindrical cavity structure, inner diameter 100mm, height 105mm, upper and lower wall thicknesses 20mm and 30mm respectively; the lower end has 8 M10 threaded holes evenly distributed along the axis, 65mm from the axis, for fastening to the end cover 210 by bolts 213; the top center hole has a diameter of 50mm for the connecting rod 203 to pass through; the two side vent holes 202 have a diameter of 4mm for connecting the upper part of the piston 204 with the external air pressure of the cylinder 201; the lower right side oil injection hole 209 has a diameter of 5mm for connecting to an external oil source through the oil injection port 207 and the oil injection port threaded connector 208 to adjust the pressure in the buffer chamber 214.

[0026] Piston 204: Cylindrical structure, 100mm in diameter and 40mm in length; two annular grooves, each 5mm deep and wide, are opened on the outer side for installing piston seal ring 205.

[0027] Connecting rod 203: solid cylinder, 600mm in length and 50mm in diameter, coaxially welded with piston 204.

[0028] Limit rod 206: solid cylinder, 300mm in length and 54mm in diameter, coaxially welded with piston 204.

[0029] End cap 210: 160mm in diameter and 45mm in height; 8 corresponding through holes are evenly arranged along the axis and 65mm from the axis, for fastening to cylinder 201 with bolts 213; two annular grooves are opened on the upper outer side for installing end cap sealing rings 211.

[0030] Limiting pad 212: A circular rubber plate with a diameter of 55mm and a thickness of 10mm, which is vulcanized and fixed to the bottom of the inner side of the end cap 210, and has a secondary buffering function.

[0031] Bolt 213: 8 M10 countersunk bolts with a thread length of 30mm, used to fasten the end cover 210 to the cylinder 201.

[0032] Buffer chamber 214: A sealed cavity structure formed by cylinder 201, piston 204, piston seal ring 205, end cap 210, and end cap seal ring 211. Oil pressure is regulated via an external oil source connected to an oil injection port 209, which has a one-way sealing function. Initially, by adjusting the initial oil pressure in buffer chamber 214, the distance between limit rod 206 and limit pad 212 is controlled to approximately 20mm.

[0033] Oil inlet 207: Cylindrical pipe used to connect to an external oil source, with a diameter of 5mm, a wall thickness of 3mm, and a pressure rating of 20MPa. It is connected to the cylinder 201 via the oil inlet threaded connector 208.

[0034] Piston seal 205 and end cap seal 211: made of rubber, used with silicone grease, providing reliable sealing and resistance to oil stains.

[0035] (4) Support component 300 301 Ring Steel: Cylindrical shell, outer diameter 90mm, thickness 10mm, height 40mm; Mounting plate 302: Circular plate structure, 130mm in diameter and 12mm in thickness, with chamfered upper and lower edges, welded to circular steel ring 301, and welded to the external base.

[0036] (5) Assembly steps Step 1: Use the vibration isolation structure 104 to vulcanize and connect the lower retaining ring 103 and the screw. The screw is pre-installed with nuts and flat washers. Use the retaining ring fastener 102 to connect the upper retaining ring 101 and the lower retaining ring 103 to complete the vibration isolation assembly 100. Step 2: Weld connecting rod 203, piston 204, and limit rod 206. After installing piston seal ring 205 coated with silicone grease, install the whole assembly into cylinder 201. Push limit rod 206 upward until connecting rod 203 passes through the top round hole of cylinder 201. Fix oil inlet 207 with oil inlet threaded connector 208. Step 3: Fix the limiting pad 212 to the bottom inner side of the end cap 210 by vulcanization, install the end cap sealing ring 211 with silicone grease applied, mate the end cap 210 with the cylinder 201 and tighten the bolts 213 diagonally to complete the impact-resistant assembly 200. Step 4: Weld the circular steel ring 301 to the mounting plate 302 to complete the support assembly 300; Step 5: Final assembly, vulcanize the connecting rod 203 and the vibration isolation structure 104, weld the ring steel 301 and the end cap 210, and complete the support and hanger assembly; before final assembly, inject hydraulic oil into the buffer chamber 214 through the oil injection hole 209 and adjust the initial pressure.

[0037] (6) Working principle Pipeline vibration is isolated by vibration isolation component 100, with good low-frequency vibration isolation effect; external impact is transmitted to connecting rod 203 through vibration isolation component 100, pushing piston 204 to move towards end cover 210, and the oil pressure in buffer chamber 214 increases, thereby slowing down the downward movement speed of piston 204 and achieving primary buffering; when the impact force is too large, piston 204 drives limit rod 206 to contact limit pad 212 to achieve secondary buffering, effectively protecting the safety of pipeline and support structure.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention; any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A pipe vibration isolation and impact-resistant support, characterized in that, It consists of a vibration isolation component (100), an impact-resistant component (200), and a support component (300); The vibration isolation component (100) is fitted onto the outside of the pipeline to isolate pipeline vibration; One end of the impact-resistant component (200) is connected to the vibration isolation component (100), and the other end is connected to the support component (300) to buffer external impacts; The support assembly (300) is used to fix to the external base and provide support for the entire support bracket.

2. The pipeline vibration isolation and impact-resistant support according to claim 1, characterized in that, The vibration isolation assembly (100) includes an upper retaining ring (101), a retaining ring fastener (102), a lower retaining ring (103), and a vibration isolation structure (104). The upper retaining ring (101) and the lower retaining ring (103) are both semi-circular structures, and are detachably connected to and hold the pipeline by the retaining ring fastener (102); The vibration isolation structure (104) adopts a metamaterial structure, the width of which is consistent with that of the lower retaining ring (103), and is connected to the lower retaining ring (103) and the screw of the retaining ring fastener (102) by a vulcanization process.

3. The pipeline vibration isolation and impact-resistant support according to claim 2, characterized in that, The impact-resistant assembly (200) includes a cylinder (201), a piston (204), a connecting rod (203), a limiting rod (206), an end cap (210), and a buffer chamber (214). The piston (204) is disposed inside the cylinder (201) and divides the interior of the cylinder; The connecting rod (203) is coaxially connected to the piston (204), and one end of the connecting rod (201) is vulcanized to the vibration isolation structure (104); The limiting rod (206) is coaxially connected to the piston (204) and extends toward the end cap (210); The end cap (210) is sealed to the other end of the cylinder (201), and a limiting gasket (212) is provided on its inner side. The buffer chamber (214) is a sealed cavity formed by the cylinder (201), piston (204), end cap (210), piston sealing ring (205), and end cap sealing ring (211), and is filled with oil. The cylinder (201) is provided with an oil injection hole (209) that communicates with the buffer chamber (214) for adjusting the oil pressure inside the chamber.

4. The pipeline vibration isolation and impact-resistant support according to claim 3, characterized in that, The support assembly (300) includes a ring steel (301) and a mounting plate (302); The ring steel (301) is a cylindrical shell, one end of which is welded to the end cap (210), and the other end is welded to the mounting pad (302); The mounting pad (302) is used for welding and fixing to the external mounting base.

5. The pipeline vibration isolation and impact-resistant support according to claim 3, characterized in that, The cylinder (201) has a vent hole (202) on its side wall to balance the air pressure on the non-buffered chamber side of the piston (204).

6. The pipeline vibration isolation and impact-resistant support according to claim 3, characterized in that, The initial oil pressure of the buffer chamber (214) is adjusted to maintain a preset distance between the limiting rod (206) and the limiting pad (212).

7. The pipeline vibration isolation and impact-resistant support according to claim 3, characterized in that, The piston (204) is equipped with a piston seal ring (205), and the end cap (210) is equipped with an end cap seal ring (211). Both the piston seal ring (205) and the end cap seal ring (211) are made of rubber and coated with silicone grease.

8. The pipeline vibration isolation and impact-resistant support according to claim 3, characterized in that, The natural frequency of the vibration isolation structure (104) is approximately 10 Hz.

9. A method for assembling a pipeline vibration isolation and impact-resistant support as described in any one of claims 1-8, characterized in that, Includes the following steps: S1: Assemble the vibration isolation assembly (100), connect the vibration isolation structure (104) to the lower retaining ring (103) and the screw of the retaining ring fastener (102) through the vulcanization process, and then use the retaining ring fastener (102) to fasten the upper retaining ring (101) and the lower retaining ring (103). S2: Assemble the impact-resistant assembly (200), weld the connecting rod (203), piston (204) and limit rod (206) coaxially, install the piston seal ring (205) on the piston (204), and then install the assembly into the cylinder (201); fix the limit pad (212) to the inside of the end cover (210), install the end cover seal ring (211), and then seal and fasten the end cover (210) and the cylinder (201) to form a buffer chamber (214). S3: Assemble the support assembly (300) and weld the ring steel (301) to the mounting plate (302); S4: Final assembly, connecting the vibration isolation structure (104) of the vibration isolation component (100) to the connecting rod (203) of the impact-resistant component (200) through a vulcanization process, and welding the ring steel (301) of the support component (300) to the end cap (210) of the impact-resistant component (200).

10. The assembly method according to claim 9, characterized in that, In step S2, when fastening the end cap (210) and the cylinder (201), the bolts (213) are tightened in a diagonal fastening manner; before final assembly in step S4, hydraulic oil is injected into the buffer chamber (214) through the oil injection hole (209) and the initial pressure is adjusted.

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