Insulated elbow pipe with anti-vibration structure

Abstract

The utility model relates to pipeline engineering technical field, concretely is a kind of heat preservation elbow pipe with anti-seismic structure, including elbow pipe body, heat preservation mechanism and anti-seismic mechanism, the heat preservation mechanism and anti-seismic mechanism fixedly connected in the outer surface of elbow pipe body, the inner wall of elbow pipe body is equipped with flow guide groove, the heat preservation mechanism includes internal heat preservation layer and external heat preservation component, the anti-seismic mechanism includes anti-seismic inner layer and external anti-seismic component.In the utility model, through the setting of anti-seismic inner layer, buffer spring and shock absorber, form multilevel anti-seismic system, anti-seismic inner layer can preliminarily absorb the vibration energy of elbow pipe body, avoid vibration transmission to heat preservation layer, buffer spring can buffer external impact, buffer the impact force in the inside of elbow pipe body, prevent the rupture of elbow pipe body due to local stress too large, shock absorber and shock-absorbing expansion spring synergistic effect, the vibration generated due to external connection is quickly attenuated, effectively avoid pipeline interface loose, weld cracking and other risks.

Description

Technical Field

[0001] This utility model relates to the field of pipeline engineering technology, and in particular to an insulated bend with an earthquake-resistant structure. Background Technology

[0002] In modern engineering construction, the safe and stable operation of pipeline systems is crucial, especially in complex environments such as earthquake-prone areas and locations subject to industrial vibrations. As a key component of pipeline systems, insulated bends must not only possess excellent thermal insulation performance to ensure the temperature stability of the transported medium, but also have reliable seismic resistance to withstand various external impacts and ensure the normal operation of the entire pipeline network.

[0003] Existing technologies, such as the utility model patent with publication number CN 213089107 U, disclose an insulated connecting bend pipe, including multiple outer sheaths. Each outer sheath has a rubber connecting ring fixed to one end. The inner circumferential surface of the connecting ring has multiple protrusions fixed to it. The outer end of the outer sheath away from the connecting ring has a receiving ring fixed to it. The outer circumferential surface of the receiving ring has a connecting groove that can engage with the protrusions. The outer circumferential surface of the receiving ring abuts against the inner circumferential surface of the adjacent outer sheath. The outer circumferential surface of the receiving ring has a connecting groove corresponding to the position of each protrusion. The protrusions can engage in the connecting groove. This application has the effect of facilitating the fine adjustment of the connection angle between multiple outer sheaths according to the angle of the bent steel pipe.

[0004] When existing technical solutions are used, they are prone to stress concentration when subjected to external forces such as earthquakes, equipment vibrations, and medium pressure fluctuations, which can lead to problems such as pipe body rupture and weld cracking. Under vibration, the insulation layer is prone to falling off and being damaged, which not only loses its insulation effect but may also further aggravate the corrosion and structural damage of the pipe.

[0005] To address the above problems, this utility model provides an insulated bend with an earthquake-resistant structure. Utility Model Content

[0006] The purpose of this utility model is to solve the problems of insufficient seismic resistance structure and easy damage of the insulation layer in the existing technology of insulated bend pipe, and to propose an insulated bend pipe with seismic resistance structure.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a heat-insulating bend with an anti-seismic structure, comprising a bend body, a heat-insulating mechanism and an anti-seismic mechanism, wherein the heat-insulating mechanism and the anti-seismic mechanism are fixedly connected to the outer surface of the bend body, and a flow-guiding groove is provided on the inner wall of the bend body.

[0008] The insulation mechanism includes an inner insulation layer and an outer insulation component, and the seismic resistance mechanism includes a seismic-resistant inner layer and an outer seismic-resistant component. The inner insulation layer is fixedly connected to the outer surface of the bent pipe body, and the seismic-resistant inner layer is fixedly connected to the outer surface of the inner insulation layer.

[0009] The external insulation component is fitted onto the outer surface of the seismic inner layer. The external insulation component includes an external insulation layer fitted onto the outer surface of the seismic inner layer. Connecting clamps are snapped onto both ends of the external insulation layer. Connecting bolts are threaded onto both sides of the connecting clamps. Connecting nuts are threaded onto the outer surfaces of the connecting bolts. The connecting clamps are threaded onto the outer surface of the external insulation layer through the connecting bolts. The two ends of the external insulation layer are threaded onto the outer surface of the bend body through the connecting clamps.

[0010] Furthermore, the insulation mechanism also includes connecting flanges fixedly connected to both ends of the bend body. The outer surface of the connecting flange is threaded with a sealing gasket, and the outer surfaces of the connecting flange and the sealing gasket are threaded with fasteners. The connecting flange and the sealing gasket are symmetrically arranged at both ends of the bend body.

[0011] Furthermore, the external seismic stabilization assembly includes a connecting bend pipe damping assembly and an external connecting damping assembly. The external connecting damping assembly is threadedly connected to the outer surface of the connecting bend pipe damping assembly, and the external seismic stabilization assembly is symmetrically arranged at both ends of the outer surface of the bend pipe body.

[0012] Furthermore, the connecting bend vibration damping assembly includes a lower ring snapped onto the outer surface of the bend body, an upper ring threaded to the top of the lower ring, and multiple buffer springs equally spaced on the inner walls of the upper and lower rings, with a clamping plate fixedly connected to the top of each buffer spring.

[0013] Furthermore, the upper and lower rings are symmetrically arranged on the outer surface of the bent pipe body, and the upper and lower rings are threadedly connected to limiters on both sides, and the upper and lower rings are threadedly connected to the outer surface of the bent pipe body through the limiters.

[0014] Furthermore, the external connection damping assembly includes a fixed plate fixedly connected to the bottom of the lower ring, a damping damper is threadedly connected to the bottom of the fixed plate, and a damping telescopic spring is sleeved on the outer surface of the damping damper. The damping telescopic spring and the damping damper are symmetrically arranged at the bottom of the fixed plate.

[0015] Furthermore, the top of the shock absorber is threaded with a connector, and the shock absorber and the shock absorber extension spring are symmetrically threaded to the bottom of the fixed plate through the connector. The bottom of the shock absorber is fixedly connected to an external connecting plate.

[0016] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0017] 1. In this utility model, a multi-level seismic system is formed by setting up an anti-seismic inner layer, a buffer spring, and a shock-absorbing damper. The anti-seismic inner layer can initially absorb the vibration energy of the bend body and prevent the vibration from being transmitted to the insulation layer. The buffer spring can buffer external impacts, buffer the impact force inside the bend body, disperse the concentrated stress of the bend, and prevent the bend body from cracking due to excessive local stress. The shock-absorbing damper and the shock-absorbing telescopic spring work together to quickly attenuate the vibration caused by external connections and effectively avoid the risks of loose pipe joints and weld cracks.

[0018] 2. In this utility model, a dual insulation and sealing system is established by setting an internal insulation layer, an external insulation layer and a sealing gasket. The internal insulation layer and the external insulation layer form a composite insulation structure with a low thermal conductivity, which can reduce heat loss. The connecting clamps and sealing gaskets ensure the sealing of the insulation layer with the bend body and flange connection, preventing cold air from seeping in or hot air from leaking in. At the same time, it prevents the insulation layer from falling off due to vibration, ensuring long-term stable insulation effect. Attached Figure Description

[0019] Figure 1 A three-dimensional structural diagram of an insulated bend with an earthquake-resistant structure is provided for this utility model.

[0020] Figure 2 This utility model provides a structural diagram of the internal insulation layer in an insulated bend with an earthquake-resistant structure.

[0021] Figure 3 This utility model proposes a thermally insulated bend with an earthquake-resistant structure. Figure 2 Enlarged view of point A;

[0022] Figure 4 This utility model provides a structural diagram of the external insulation layer in an insulated bend with an earthquake-resistant structure;

[0023] Figure 5 This utility model provides a schematic diagram of the structure of a buffer spring in an insulated bend with an anti-seismic structure;

[0024] Figure 6 This utility model proposes a thermally insulated bend with an earthquake-resistant structure. Figure 5 Enlarged diagram of point B.

[0025] Legend:

[0026] 1. Bending pipe body; 2. Insulation mechanism; 21. Inner insulation layer; 22. Outer insulation component; 221. Outer insulation layer; 222. Connecting clamp; 223. Connecting bolt; 224. Connecting nut; 23. Connecting flange; 24. Sealing gasket; 25. Fastener; 3. Seismic mechanism; 31. Seismic inner layer; 32. Outer seismic component; 321. Connecting bend vibration damping component; 3211. Lower ring; 3212. Upper ring; 3213. Buffer spring; 3214. Clamping plate; 3215. Limiting component; 322. Outer connecting vibration damping component; 3221. Fixing plate; 3222. Vibration damper; 3223. Vibration damping telescopic spring; 3224. Connecting piece; 3225. Outer connecting plate; 4. Guide groove. Detailed Implementation

[0027] Please see Figure 1-6 This utility model provides a technical solution: a heat-insulating bend with an anti-seismic structure, including a bend body 1, a heat-insulating mechanism 2 and an anti-seismic mechanism 3. The heat-insulating mechanism 2 and the anti-seismic mechanism 3 are fixedly connected to the outer surface of the bend body 1, and a flow-guiding groove 4 is provided on the inner wall of the bend body 1.

[0028] The following section will explain the specific setup and function of its insulation mechanism 2 and earthquake-resistant mechanism 3.

[0029] In this implementation scheme: the insulation mechanism 2 includes an inner insulation layer 21 and an outer insulation component 22, and the seismic mechanism 3 includes a seismic inner layer 31 and an outer seismic component 32. The inner insulation layer 21 is fixedly connected to the outer surface of the bent pipe body 1, and the seismic inner layer 31 is fixedly connected to the outer surface of the inner insulation layer 21.

[0030] The external insulation component 22 is fitted onto the outer surface of the seismic inner layer 31. The external insulation component 22 includes an external insulation layer 221 fitted onto the outer surface of the seismic inner layer 31. Connecting clamps 222 are snapped onto both ends of the external insulation layer 221. Connecting bolts 223 are threaded onto both sides of the connecting clamps 222. Connecting nuts 224 are threaded onto the outer surface of the connecting bolts 223. The connecting clamps 222 are threaded onto the outer surface of the external insulation layer 221 through the connecting bolts 223. The two ends of the external insulation layer 221 are threaded onto the outer surface of the bent pipe body 1 through the connecting clamps 222.

[0031] The effects achieved by the above components are as follows: the inner insulation layer 21 adheres to the outer wall of the bend body 1, blocking direct heat exchange between the bend body 1 and the outside; the seismic inner layer 31 is fixed to the outside of the inner insulation layer 21, which, while playing a seismic buffering role, can fill the tiny gaps on the surface of the inner insulation layer 21, reduce the thermal bridging effect, and improve the overall insulation and sealing performance; the outer insulation layer 221 is fitted over the seismic inner layer 31, forming a second high-efficiency insulation barrier; the connecting clamp 222, through the fastening action of the connecting bolt 223 and the connecting nut 224, firmly fixes both ends of the outer insulation layer 221 to the bend body 1, preventing the insulation layer from shifting due to vibration or temperature changes; at the same time, the rubber anti-slip pad on the inner wall of the clamp can adapt to the thermal expansion and contraction of the insulation layer, preventing gaps between the insulation layer and the clamp, and ensuring stable long-term insulation performance.

[0032] Specifically, the insulation mechanism 2 also includes connecting flanges 23 fixedly connected to both ends of the bend body 1. The outer surface of the connecting flanges 23 is threaded with sealing gaskets 24. Fasteners 25 are threaded on the outer surfaces of the connecting flanges 23 and the sealing gaskets 24. The connecting flanges 23 and the sealing gaskets 24 are symmetrically arranged at both ends of the bend body 1.

[0033] The effects achieved by the above components are as follows: the connecting flange 23 is welded to both ends of the elbow body 1, providing a standardized interface for the connection of the elbow with other pipes; the sealing gasket 24 is made of silicone rubber and fits tightly against the sealing surface of the flange. Its high elasticity can compensate for minor unevenness of the flange connection surface. Combined with the high-strength fastening force of the fastener 25, a reliable seal is formed. The symmetrically arranged connecting flange 23 and sealing gasket 24 ensure that the forces at both ends of the elbow are balanced, avoiding sealing failure or pipe deformation caused by unilateral forces. It is suitable for the docking requirements of pipes of different diameters and improves the versatility of installation.

[0034] Specifically, the external seismic component 32 includes a connecting bend damping component 321 and an external connecting damping component 322. The external connecting damping component 322 is threaded to the outer surface of the connecting bend damping component 321. The external seismic component 32 is symmetrically arranged at both ends of the outer surface of the bend body 1.

[0035] The effect achieved by the above components is as follows: the external anti-vibration component 32 is composed of the connecting bend damping component 321 and the external connecting damping component 322, and is symmetrically arranged at both ends of the outer surface of the bend body 1. It can disperse the vibration impact force on the bend from both ends to the external structure, avoid the vibration stress concentration at the bend apex or interface. The symmetrical layout allows the anti-vibration components at both ends to generate a buffering effect when the bend vibrates axially and radially, reduce the torsional deformation of the bend caused by uneven force, and ensure the connection accuracy of the pipeline system.

[0036] Specifically, the connecting pipe damping assembly 321 includes a lower ring 3211 snapped onto the outer surface of the pipe body 1, an upper ring 3212 threadedly connected to the top of the lower ring 3211, and multiple buffer springs 3213 equally spaced on the inner walls of the upper ring 3212 and the lower ring 3211, with a clamping plate 3214 fixedly connected to the top of the buffer springs 3213.

[0037] The effects achieved by the above components are as follows: the lower ring 3211 and the upper ring 3212 are spliced ​​and wrapped around the outside of the bend to form a ring-shaped anti-seismic frame, providing a mounting carrier for the buffer spring 3213. The buffer springs 3213, which are set at equal intervals, can adaptively expand and contract in response to vibrations in different directions. When the bend is subjected to radial vibration, the spring compression can be adjusted according to the vibration intensity, converting the vibration energy into the spring's elastic potential energy, thus achieving the initial absorption of vibration impact. One end of the clamping plate 3214 is fixed to the spring, and the other end is attached to the external insulation layer 221. This not only avoids damage to the insulation layer caused by direct contact between the metal ring and the insulation layer, but also limits the displacement of the insulation layer through the frictional resistance of the rubber. At the same time, the elasticity of the rubber can further buffer high-frequency micro-vibrations, reduce mechanical wear between the insulation layer and the anti-seismic components, and extend the service life of the insulation layer.

[0038] Specifically, the upper ring 3212 and the lower ring 3211 are symmetrically arranged on the outer surface of the bent pipe body 1. The upper ring 3212 and the lower ring 3211 are threadedly connected to the two sides of the limiting member 3215. The upper ring 3212 and the lower ring 3211 are threadedly connected to the outer surface of the bent pipe body 1 through the limiting member 3215.

[0039] The effects achieved by the above components are as follows: the upper and lower rings 3211 are symmetrically arranged, and clamping force can be applied simultaneously from both sides of the bend, avoiding local stress concentration caused by installation eccentricity. The limiting component 3215 passes through the upper and lower rings 3211, connects the ear plate and tightens it, which can prevent the bolts from loosening due to vibration, ensure that the rings remain in a stable clamping state after long-term vibration, avoid the loosening and failure of the anti-seismic components, and ensure long-term reliable anti-seismic performance.

[0040] Specifically, the external connection damping component 322 includes a fixing plate 3221 fixedly connected to the bottom of the lower ring 3211. The bottom of the fixing plate 3221 is threadedly connected to a damping damper 3222. A damping extension spring 3223 is sleeved on the outer surface of the damping damper 3222. The damping extension spring 3223 and the damping damper 3222 are symmetrically arranged at the bottom of the fixing plate 3221.

[0041] The effects achieved by the above components are as follows: the fixed plate 3221 acts as a connecting bridge, firmly connecting the lower ring 3211 and the damper 3222, ensuring that the vibration of the bend can be effectively transmitted to the damping component. The damper 3222 can quickly attenuate high-frequency vibration through the viscous damping effect of hydraulic oil, preventing high-frequency vibration from being transmitted to the building structure or other pipe components. The damping telescopic spring 3223 sleeved on its outer side absorbs vibration energy through spring telescopic deformation, which can evenly bear the weight of the bend and the vibration load, avoiding damage to the damping component caused by unilateral force.

[0042] Specifically, the top of the damper 3222 is threaded with a connector 3224, and the damper 3222 and the damping extension spring 3223 are symmetrically threaded to the bottom of the fixed plate 3221 through the connector 3224. The bottom of the damper 3222 is fixedly connected with an external connecting plate 3225.

[0043] The effects achieved by the above components are as follows: the connector 3224 is a threaded flange joint, which realizes the detachable connection between the shock absorber 3222 and the fixing plate 3221, which facilitates the maintenance and replacement of the shock absorber components and reduces maintenance costs. The external connecting plate 3225 can be adapted to pipe supports of different specifications. During installation, the installation flexibility can be improved by adjusting the fixing position of the connecting plate and the support, and the stability of the connection between the shock absorber components and the external structure can be ensured.

[0044] Working principle: When the pipe is bent, the high-density polyurethane foam of the inner insulation layer 21 first blocks the heat transfer from the pipe body 1 to the outside, and reduces heat conduction loss by utilizing its low thermal conductivity. The seismic inner layer 31 fills the gaps on the surface of the inner insulation layer 21, reducing the thermal bridging effect. At the same time, the airtightness of its composite material can reduce heat loss caused by air convection. The vacuum insulation board of the outer insulation layer 221 blocks heat conduction and convection in a vacuum environment, further reducing heat loss. The dual insulation structure works together to achieve efficient insulation. The connecting clamps 222 fasten the two ends of the outer insulation layer 221 to prevent the insulation layer from shifting or gaps from forming. The connecting flanges 23 at both ends of the pipe form a reliable seal with the fasteners 25 through the sealing gaskets 24, preventing cold air or corrosive gases from entering the interior of the insulation layer and ensuring long-term stability of insulation and sealing effects.

[0045] When the bend is subjected to external forces such as earthquakes, equipment vibrations, or media impacts, the seismic system works in layers from the inside out. The seismic inner layer 31 first absorbs the small vibrations of the bend body 1, and buffers the vibration impact through the elastic deformation of the material, reducing the transmission of vibration to the insulation layer and preventing damage to the insulation layer.

[0046] The upper and lower rings 3211 of the connecting pipe damping component 321 form a stable frame. The buffer spring 3213 on its inner wall expands and contracts according to the vibration direction to absorb radial vibration energy. The rubber material of the clamping plate 3214 assists in buffering high-frequency micro vibrations and limits the displacement of the insulation layer.

[0047] External vibrations are transmitted to the externally connected damping components 322. The fixed plate 3221 transmits the vibration load to the damping damper 3222 and the damping extension spring 3223. The damper quickly attenuates high-frequency vibrations, and the spring buffers low-frequency vibrations. Together, they convert vibration energy into heat energy or elastic potential energy, significantly reducing vibration intensity. The external connecting plate 3225 evenly transmits the remaining vibration force to the pipe support, avoiding local stress concentration. At the same time, the symmetrically arranged anti-vibration components ensure that the bent pipe is subjected to balanced force, reducing the risk of torsional deformation.

[0048] In addition, the flow-guiding groove 4 on the inner wall of the bend body 1 guides the medium to flow smoothly, reduces the impact pressure generated by eddies, reduces the vibration of the bend caused by the impact of the medium, reduces the vibration inducement from the source, and works in synergy with the seismic system to comprehensively improve the seismic stability of the bend and ensure long-term safe operation in complex vibration environments.

Claims

1. A heat-insulating bend with an earthquake-resistant structure, comprising a bend body (1), a heat-insulating mechanism (2), and an earthquake-resistant mechanism (3), characterized in that: The heat preservation mechanism (2) and the anti-vibration mechanism (3) are fixedly connected to the outer surface of the bent pipe body (1), and the inner wall of the bent pipe body (1) is provided with a flow guiding groove (4); The insulation mechanism (2) includes an inner insulation layer (21) and an outer insulation component (22), and the seismic mechanism (3) includes an inner seismic layer (31) and an outer seismic component (32). The inner insulation layer (21) is fixedly connected to the outer surface of the bent pipe body (1), and the inner seismic layer (31) is fixedly connected to the outer surface of the inner insulation layer (21). The external insulation component (22) is fitted onto the outer surface of the seismic inner layer (31). The external insulation component (22) includes an external insulation layer (221) fitted onto the outer surface of the seismic inner layer (31). Both ends of the external insulation layer (221) are clamped with connecting clamps (222). Both sides of the connecting clamps (222) are threaded with connecting bolts (223). The outer surface of the connecting bolts (223) is threaded with connecting nuts (224). The connecting clamps (222) are threaded onto the outer surface of the external insulation layer (221) through the connecting bolts (223). Both ends of the external insulation layer (221) are threaded onto the outer surface of the bent pipe body (1) through the connecting clamps (222).

2. The insulated bend with an earthquake-resistant structure according to claim 1, characterized in that: The insulation mechanism (2) also includes connecting flanges (23) fixedly connected to both ends of the bent pipe body (1). The outer surface of the connecting flange (23) is threaded with a sealing gasket (24). The outer surfaces of the connecting flange (23) and the sealing gasket (24) are threaded with fasteners (25). The connecting flange (23) and the sealing gasket (24) are symmetrically arranged at both ends of the bent pipe body (1).

3. The insulated bend with an earthquake-resistant structure according to claim 1, characterized in that: The external seismic component (32) includes a connecting bend damping component (321) and an external connecting damping component (322). The external connecting damping component (322) is threaded to the outer surface of the connecting bend damping component (321). The external seismic component (32) is symmetrically arranged at both ends of the outer surface of the bend body (1).

4. The insulated bend with an earthquake-resistant structure according to claim 3, characterized in that: The connecting bend shock absorption assembly (321) includes a lower ring (3211) snapped onto the outer surface of the bend body (1). The top of the lower ring (3211) is threadedly connected to an upper ring (3212). Multiple buffer springs (3213) are equally spaced on the inner walls of the upper ring (3212) and the lower ring (3211). A clamping plate (3214) is fixedly connected to the top of the buffer springs (3213).

5. The insulated bend with an anti-seismic structure according to claim 4, characterized in that: The upper ring (3212) and the lower ring (3211) are symmetrically arranged on the outer surface of the bent pipe body (1). The upper ring (3212) and the lower ring (3211) are threadedly connected to the two sides of the limiting member (3215). The upper ring (3212) and the lower ring (3211) are threadedly connected to the outer surface of the bent pipe body (1) through the limiting member (3215).

6. The insulated bend with an earthquake-resistant structure according to claim 3, characterized in that: The external connection damping assembly (322) includes a fixing plate (3221) fixedly connected to the bottom of the lower ring (3211). The bottom of the fixing plate (3221) is threaded with a damping damper (3222). A damping extension spring (3223) is sleeved on the outer surface of the damping damper (3222). The damping extension spring (3223) and the damping damper (3222) are symmetrically arranged at the bottom of the fixing plate (3221).

7. The insulated bend with an earthquake-resistant structure according to claim 6, characterized in that: The top of the damper (3222) is threaded with a connector (3224). The damper (3222) and the damping spring (3223) are symmetrically threaded to the bottom of the fixed plate (3221) through the connector (3224). The bottom of the damper (3222) is fixedly connected with an external connecting plate (3225).

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