A safety protection device for gas pipeline

Abstract

The utility model provides a kind of gas pipeline safety protection device of safety protection device, which can reduce the transmission of impact force to the gas pipeline when the gas pipeline is hit by external objects, thereby reducing the deformation or cracking of the pipeline caused by impact and the risk of leakage. The device includes a pipeline body, an energy-absorbing outer layer that deforms when hit by external objects to absorb part of the impact force, an elastic middle layer inside the energy-absorbing outer layer that buffers part of the impact force that passes through the energy-absorbing outer layer when the energy-absorbing outer layer is hit by external objects, and a buffer support inner layer between the inside of the elastic middle layer and the outside of the pipeline body that buffers part of the impact force that passes through the elastic middle layer and provides support to the elastic middle layer.

Description

Technical Field

[0001] This utility model relates to the field of protective device technology, specifically to a gas pipeline safety protection device. Background Technology

[0002] Gas pipelines refer to metal or non-metal pressure pipeline systems that transport flammable gas media such as natural gas and liquefied petroleum gas. These pipelines are widely used in urban underground pipe networks, industrial parks, crossings of highways / railways, building exteriors, and equipment room connections. Especially in areas with frequent urban renewal and road construction, gas pipelines often need to be exposed to the outdoor environment or laid in shallow burial, exposing them to complex physical impact risks.

[0003] External impacts are one of the key causes of gas pipeline leaks and even explosions. These include: accidental vehicle collisions (such as collisions caused by operational errors of construction machinery or transport vehicles), construction operations (such as excavators or pile drivers accidentally touching underground pipelines), impacts from falling objects (pipelines on building exterior walls being hit by falling objects from above), and human sabotage or collisions with tools (impacts from maintenance tools or malicious sabotage). Such impacts often generate instantaneous high-energy impact loads, causing localized dents in the pipeline, cracks in welds, or loosening of connections, leading to catastrophic gas leaks.

[0004] Currently, safety protection measures for gas pipelines largely rely on warning signs for reminders, which cannot provide physical protection for gas pipelines. Although some gas pipelines have metal protective rings installed at specific heights, these rings only protect specific parts of the gas pipeline and have a limited protective range. Therefore, there is an urgent need for a safety protection device that can reduce the transmission of impact force to gas pipelines when they are hit by external objects, thereby reducing the risk of deformation, cracking, and leakage caused by the impact. Utility Model Content

[0005] The purpose of this utility model is to address the defects and deficiencies of the existing technology by providing a gas pipeline safety protection device that can reduce the transmission of impact force to the gas pipeline when it is hit by a foreign object, thereby reducing the risk of deformation, cracking, and leakage caused by the impact.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a gas pipeline safety protection device, comprising a pipeline body, and further comprising, sequentially arranged from the outside to the inside, an energy-absorbing outer layer for deforming when impacted by an external object to absorb part of the impact force, an elastic middle layer disposed inside the energy-absorbing outer layer for buffering part of the impact force passing through the energy-absorbing outer layer when impacted by an external object, and a buffer support inner layer disposed between the inner side of the elastic middle layer and the outer side of the pipeline body for buffering part of the impact force passing through the elastic middle layer and providing support for the elastic middle layer.

[0007] A further improvement is that: at least one guide block is provided on the outer periphery of the pipe body, at least one guide groove is provided on the inner side of the buffer support inner layer, the guide block and the guide groove are in clearance fit, and the inner wall of the buffer support inner layer is in clearance fit with the outer wall of the pipe body.

[0008] A further improvement is that an adhesive layer is provided between the outer side of the inner buffer support layer and the inner side of the elastic middle layer, and the adhesive layer is an instant-drying adhesive layer.

[0009] A further improvement is that an adhesive curing layer is provided between the outer side of the elastic middle layer and the inner side of the energy-absorbing outer layer, wherein the adhesive curing layer is an epoxy resin adhesive, a polyurethane adhesive, or an acrylic adhesive.

[0010] A further improvement is that the energy-absorbing outer layer is provided with energy-absorbing openings for the outer layer to undergo indentation deformation when it is impacted by an external object, thereby improving the impact absorption effect.

[0011] A further improvement is that: the energy-absorbing outer layer has guide recesses at both ends of the energy-absorbing opening, and the guide recesses are connected to the energy-absorbing opening.

[0012] A further improvement is that an energy-absorbing block is provided on the outer energy-absorbing layer within the energy-absorbing opening to improve the impact buffering effect when the energy-absorbing opening is impacted. The energy-absorbing block has a deformable inner cavity and an arc-shaped recessed groove on its side end face. The energy-absorbing block is an elastic block or a flexible block.

[0013] A further improvement is that the energy-absorbing outer layer is a metal steel or aluminum alloy layer.

[0014] A further improvement is that the elastic middle layer is a rubber layer or a silicone layer.

[0015] A further improvement is that the inner layer of the buffer support is made of polystyrene foam, PP foam board, or PVC foam board.

[0016] After adopting the above technical solution, the beneficial effects of this utility model are as follows: when an external force impacts the pipeline body, the energy-absorbing outer layer first contacts the object, and deforms when impacted by the external object, thereby absorbing part of the impact force. A small part of the impact force passes through the energy-absorbing outer layer and is buffered by the elastic middle layer. Then, the buffer support inner layer buffers the part of the impact force that has passed through the elastic middle layer. By absorbing energy and buffering from the outside to the inside, the transmission of impact force to the gas pipeline is reduced, thereby reducing the risk of deformation, cracking, and leakage caused by the impact on the pipeline.

[0017] Further benefits: The inner buffer support layer not only provides impact-resistant cushioning for the pipe body, but also expands the elastic middle layer, allowing it to fit between the inner wall of the energy-absorbing outer layer and the outer wall of the buffer support inner layer, reducing gaps that could affect the cushioning effect.

[0018] Further benefits: When connecting the inner layer of the cushioning support to the elastic middle layer, the fast curing and bonding speed of the instant adhesive can accelerate the fixation speed of the inner layer of the cushioning support on the elastic middle layer.

[0019] Further benefits: Epoxy resin adhesives, polyurethane adhesives, and acrylic adhesives all have relatively long curing times. When connecting the inner layer of the buffer support and the outer layer of the energy-absorbing layer, the adhesive can be applied first to the outer surface of the inner layer of the buffer support or the inner surface of the outer layer of the energy-absorbing layer. Then, the outer layer of the energy-absorbing layer is inserted into the outer side of the inner layer of the buffer support and fixed by clamps or tools. After the curing time is up, it can be fixed. Compared with using instant adhesive, this method can prevent the adhesive from curing before the outer layer of the energy-absorbing layer is inserted into the inner layer of the buffer support, thus preventing the fixation effect between the two layers from being affected.

[0020] Further effect: When the energy-absorbing outer layer is impacted by a foreign object and deforms by the energy-absorbing opening, the setting of the guide recess can increase the degree of indentation at the side end of the energy-absorbing opening, thereby further improving the energy absorption effect against the impact force.

[0021] Further effect: When the energy-absorbing outer layer is impacted at the energy-absorbing opening, causing the outer layer to deform and dent, the energy-absorbing block can buffer the impact force, thereby further reducing the transmission of the impact force to the inner structure. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a cross-sectional view of the present invention;

[0024] Figure 2 This is a cross-sectional view of the energy-absorbing opening, guide recess, energy-absorbing block, deformation inner cavity, and arc recess groove in this utility model.

[0025] Figure 3 It corresponds Figure 1 Enlarged view of part A.

[0026] Explanation of reference numerals in the attached drawings: 1. Pipe body; 2. Energy-absorbing outer layer; 3. Elastic middle layer; 4. Buffer support inner layer; 5. Guide block; 6. Guide groove; 8. Adhesive layer; 9. Adhesive curing layer; 10. Energy-absorbing opening; 11. Guide recess; 12. Energy-absorbing block; 13. Deformation inner cavity; 14. Arc recessed groove. Detailed Implementation

[0027] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0028] See Figures 1 to 3 As shown, the technical solution adopted in this specific embodiment is: a gas pipeline safety protection device, including a pipeline body 1, and further including, sequentially arranged from the outside to the inside, an energy-absorbing outer layer 2 for deforming when impacted by an external object to absorb part of the impact force; an elastic middle layer 3 disposed inside the energy-absorbing outer layer 2 for buffering part of the impact force passing through the energy-absorbing outer layer 2 when impacted by an external object; and a buffer support inner layer 4 disposed between the inner side of the elastic middle layer 3 and the outer side of the pipeline body 1 for buffering part of the impact force passing through the elastic middle layer 3 and providing support for the elastic middle layer 3. Both the energy-absorbing outer layer 2 and the buffer support inner layer 4 are annular in shape.

[0029] At least one guide block 5 is provided on the outer periphery of the pipe body 1, and at least one guide groove 6 is provided on the inner side of the buffer support inner layer 4. The guide block 5 and the guide groove 6 are in clearance fit, and the inner wall of the buffer support inner layer 4 is in clearance fit with the outer wall of the pipe body 1. When there is more than one guide block 5, the guide blocks 5 are arranged equidistantly in a ring, and the number of guide grooves 6 corresponds to the number of guide blocks 5, and the setting position of the guide grooves 6 corresponds to the setting position of the guide blocks 5. The guide blocks 5 are integrally formed with the pipe body 1 by bonding, welding, or during the production of the pipe body 1, and the guide grooves 6 are integrally formed with the buffer support inner layer 4. The guide blocks 5 are arranged along the length direction of the pipe body 1, and the guide grooves 6 are opened along the length direction of the buffer support inner layer 4. Although gas pipelines may have corner joints for easy connection, the exposed area is still at the non-corner position. Therefore, this safety protection device is installed at the non-corner position of the pipe body 1 and is suitable for use in horizontal and straight pipe bodies 1.

[0030] When installing the inner buffer support layer 4, simply align the guide groove 6 with the guide block 5 and push it in so that the inner buffer support layer 4 fits onto the outside of the pipe body 1. When the energy-absorbing outer layer 2 is damaged and needs to be replaced, simply pull the inner buffer support layer 4 out of the pipe body 1 and install the inner buffer support layer 4 with the new energy-absorbing outer layer 2 into the pipe body 1.

[0031] An adhesive layer 8 is provided between the outer side of the inner buffer support layer 4 and the inner side of the elastic middle layer 3. When unfolded, the elastic middle layer 3 is in the shape of a long plate. By applying the adhesive layer 8 to the inner side and bending it along the arc surface of the outer side of the inner buffer support layer 4, the outer side of the bent and bonded inner buffer support layer 4 and the inner side of the elastic middle layer 3 are bonded and fixed by the adhesive layer 8.

[0032] The adhesive layer 8 is an instant adhesive layer. The instant adhesive selected is 406 or 424 instant adhesive. When connecting the inner buffer support layer 4 and the elastic middle layer 3, the rapid curing speed of the instant adhesive can accelerate the fixation speed of the inner buffer support layer 4 onto the elastic middle layer 3.

[0033] An adhesive curing layer 9 is disposed between the outer side of the elastic middle layer 3 and the inner side of the energy-absorbing outer layer 2. The adhesive curing layer 9 is an epoxy resin adhesive, polyurethane adhesive, or acrylic adhesive. Epoxy resin adhesives typically require 3.5 hours for initial curing and 24 hours for complete curing. Polyurethane adhesives typically surface dry within 1-2 hours (surface drying time) and require 8-24 hours for complete curing. At room temperature (25℃), most acrylic adhesives require 18 minutes to 24 hours to complete curing.

[0034] The energy-absorbing outer layer 2 is provided with an energy-absorbing opening 10, which allows the energy-absorbing outer layer 2 to undergo indentation deformation when it is impacted by an external object, thereby improving the impact absorption effect.

[0035] The energy-absorbing outer layer 2 has guide recesses 11 at both ends of the energy-absorbing opening 10, and the guide recesses 11 are connected to the energy-absorbing opening 10.

[0036] The energy-absorbing outer layer 2 has an energy-absorbing block 12 disposed within the energy-absorbing opening 10 to improve the impact buffering effect when the energy-absorbing opening 10 is impacted. The energy-absorbing block 12 has a deformable inner cavity 13 and an arc-shaped recessed groove 14 on its side end face. The energy-absorbing block 12 can be an elastic block or a flexible block. When the energy-absorbing block 12 is an elastic block, it can be a rubber block or a silicone block; when it is a flexible block, it can be made of a sponge-like or foam board-like material. The position of the arc-shaped recessed groove 14 corresponds to the position of the deformable inner cavity 13. The energy-absorbing block 12 is fixed to the energy-absorbing outer layer 2 by adhesive bonding or interference fit embedding.

[0037] The energy-absorbing outer layer 2 is made of metal steel or aluminum alloy. Flexible metal materials such as copper can also be used.

[0038] The elastic middle layer 3 is a rubber layer or a silicone layer.

[0039] The inner layer 4 of the buffer support is made of polystyrene foam, PP foam board, or PVC foam board.

[0040] The working principle of this utility model is as follows: When an external force impacts the pipe body 1, the energy-absorbing outer layer 2 first contacts the object. When the energy-absorbing outer layer 2 is impacted by the external object, the setting of the guide recess 11 can increase the degree of concavity at the side end of the energy-absorbing opening 10, thereby improving the energy absorption effect of the impact force. When the energy-absorbing outer layer 2 is impacted at the energy-absorbing opening 10, causing the energy-absorbing outer layer 2 at the energy-absorbing opening 10 to undergo concave deformation, the energy-absorbing block 12 increases the compressible space through the deformation inner cavity 13 and the arc concave groove 14, thereby buffering the impact force generated by the impact, thereby further reducing the impact force generated by the impact from being transmitted to the inner layer structure. After a small part of the impact force passes through the energy-absorbing outer layer 2, the elastic middle layer 3 buffers this part of the impact force, and then the buffer support inner layer 4 buffers the part of the impact force that has passed through the elastic middle layer 3. By absorbing and buffering energy from the outside to the inside, the transmission of the impact force to the gas pipeline is reduced, thereby reducing the risk of deformation, cracking and leakage caused by the impact on the pipeline.

[0041] The inner buffer support layer 4 not only provides the impact-resistant buffering effect of the pipe body 1, but also expands the elastic middle layer 3, allowing the elastic middle layer 3 to fit between the inner wall of the energy-absorbing outer layer 2 and the outer wall of the inner buffer support layer 4, reducing the generation of gaps and affecting the buffering effect.

[0042] This utility model aims to protect the structure of the product. The model numbers of the components are not the focus of this utility model's protection, as they are known technologies. Any component on the market that can achieve the functions described above can be used as a gas pipeline safety protection device. Therefore, the model numbers and other parameters of the components are not described in detail in this utility model. The contribution of this utility model lies in the scientific combination of the various components.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions provided are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents. Any aspects of this utility model not detailed herein are well-known to those skilled in the art.

Claims

1. A safety protection device for gas pipelines, comprising a pipeline body, characterized in that: It also includes, from the outside in, an energy-absorbing outer layer that deforms when impacted by a foreign object to absorb part of the impact force; an elastic middle layer disposed inside the energy-absorbing outer layer to buffer part of the impact force passing through the energy-absorbing outer layer when impacted by a foreign object; and a buffer support inner layer disposed between the inner side of the elastic middle layer and the outer side of the pipe body to buffer part of the impact force passing through the elastic middle layer and provide support for the elastic middle layer.

2. The gas pipeline safety protection device according to claim 1, characterized in that: At least one guide block is provided on the outer periphery of the pipe body, and at least one guide groove is provided on the inner side of the buffer support inner layer. The guide block and the guide groove are in clearance fit, and the inner wall of the buffer support inner layer is in clearance fit with the outer wall of the pipe body.

3. A gas pipeline safety protection device according to claim 1, characterized in that: An adhesive layer is provided between the outer side of the inner layer of the buffer support and the inner side of the elastic middle layer, and the adhesive layer is an instant-drying adhesive layer.

4. A gas pipeline safety protection device according to claim 1, characterized in that: An adhesive curing layer is provided between the outer side of the elastic middle layer and the inner side of the energy-absorbing outer layer. The adhesive curing layer is an epoxy resin adhesive, a polyurethane adhesive, or an acrylic adhesive.

5. A gas pipeline safety protection device according to claim 1, characterized in that: The energy-absorbing outer layer is provided with energy-absorbing openings that allow the outer layer to deform into a depression when it is impacted by an external object, thereby improving the effect of absorbing impact force.

6. A gas pipeline safety protection device according to claim 5, characterized in that: The outer layer of the energy-absorbing material has guide recesses at both ends of the energy-absorbing opening, and the guide recesses are connected to the energy-absorbing opening.

7. A gas pipeline safety protection device according to claim 5, characterized in that: The outer layer of the energy-absorbing material has an energy-absorbing block located in the energy-absorbing opening, which is used to improve the impact buffering effect when the energy-absorbing opening is impacted. The energy-absorbing block has a deformation cavity inside and an arc-shaped groove on the side end face. The energy-absorbing block is an elastic block or a flexible block.

8. A gas pipeline safety protection device according to claim 1, characterized in that: The energy-absorbing outer layer is a metal steel or aluminum alloy layer.

9. A gas pipeline safety protection device according to claim 1, characterized in that: The elastic middle layer is a rubber layer or a silicone layer.

10. A gas pipeline safety protection device according to claim 1, characterized in that: The inner layer of the buffer support is made of polystyrene foam, PP foam board, or PVC foam board.

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