A safety protection device for gas pipelines

Abstract

This utility model relates to the field of gas pipeline equipment technology and discloses a gas pipeline safety protection device, including an outdoor pipeline, a flange, a protective mechanism, and a fixing mechanism. The protective mechanism covers the outside of the flange and includes an upper shell and a lower shell that are rotatably connected. Both shells have locking blocks on their inner walls that fit the flange. The upper shell has a sliding stop with a groove on its inner wall. A lever drives the stop to block and close any gaps. The lower shell has a filling block that cooperates with the stop. The fixing mechanism includes a fixing ring fixed to the pipeline and an outer ring installed on a building. The outer ring has a radially sliding push rod and a spring damper. The push rod is inserted into the rod groove of the fixing ring. This utility model achieves efficient sealing protection at the flange through the sliding stop and the filling block, and provides elastic support and vibration reset for the pipeline through the spring damping structure, effectively preventing gas leakage and pipeline damage.

Description

Technical Field

[0001] This utility model relates to the field of gas pipeline equipment technology, and in particular to a gas pipeline safety protection device. Background Technology

[0002] Gas pipelines, as an important infrastructure for urban energy transmission, are widely distributed in outdoor environments. To achieve connections between different pipe sections and facilitate subsequent inspection and maintenance, flange connections are widely used in the construction and assembly of gas pipelines. As a key node in pipeline connections, the sealing performance and structural integrity of flanges are directly related to the safety of gas transmission. However, the outdoor environment is complex and changeable. Flange connections exposed to the elements for a long time not only have to bear their own weight load, but also face the constant threat of rainwater erosion, wind and sand abrasion, and corrosion from chemicals in the air. These external factors can cause the flange body and connecting bolts to gradually rust and age, thereby damaging the original sealing structure, causing minor gas leaks or even serious safety accidents.

[0003] Current protective measures mostly employ simple rigid covers or direct application of anti-corrosion coatings. Rigid covers are often installed with a split structure to facilitate fitting onto the pipeline. However, gaps inevitably exist at the closure point, and existing designs struggle to effectively seal these gaps. This allows rainwater and small particles to seep into the cover and accumulate, continuously corroding the flange. Furthermore, this single rigid protective structure lacks the ability to buffer pipeline vibrations. When the pipeline is subjected to external impacts, the cover and the pipeline collide, exacerbating the damage to the pipeline. This approach fails to meet the dual protection requirements of high sealing performance and seismic resistance for outdoor gas pipelines.

[0004] Therefore, this utility model proposes a gas pipeline safety protection device to address the shortcomings of the prior art. Utility Model Content

[0005] In view of the problems in the existing gas pipeline safety protection devices, such as the difficulty in effectively sealing the gaps at the closure of the split-type protective cover, which makes the flange connection susceptible to erosion by rainwater and wind and sand, and the lack of shock absorption and buffering capacity due to the rigid fixation between the pipeline and the building, which makes the pipeline interface prone to loosening or damage due to vibration, this utility model aims to provide a gas pipeline safety protection device with an improved structure that can effectively solve the above problems.

[0006] This utility model provides a gas pipeline safety protection device, including an outdoor pipeline, a flange connected to the end of the outdoor pipeline, a protective mechanism installed on the outer wall of the outdoor pipeline, and a fixing mechanism installed on the outer wall of the outdoor pipeline.

[0007] The protective mechanism includes an upper shell and a lower shell that are rotatably connected to each other, a locking block that is fixedly connected to the inner wall of the upper shell and the inner wall of the lower shell, a blocking block that is slidably connected to the inner wall of the upper shell, a slider that is fixedly connected to the inner wall of the upper shell, and a lever that is fixedly connected to the middle of the outer wall of the blocking block. The fixing mechanism includes a fixing ring that is fixedly connected to the outer wall of the outdoor pipe, a mounting bracket installed on the bottom of the outer side of the outdoor pipe, and an outer ring that is fixedly connected to the top of the mounting bracket.

[0008] Furthermore, the upper and lower shells achieve axial positioning by matching the shape of the flange with the inner wall of the locking block. The stop block is slidably engaged with the slider on the inner wall of the upper shell through the groove on the outer wall, so that the stop block can slide directionally along the inner wall of the upper shell to cover the gap. The lever block passes through the lever block on the outer wall of the upper shell and extends to the outside for operation. The outer ring is fitted outside the fixed ring to form a concentric or eccentric fit structure.

[0009] Preferably, a filling block is fixedly connected to the inner wall of the lower shell. The position of the filling block corresponds to the position of the stop block. The shape of the filling block is adapted to the cross-sectional shape of the stop block and can be snapped into the bottom of the stop block. The filling block physically fills the internal space of the stop block to prevent external impurities from entering the interior through the hollow structure of the stop block.

[0010] Preferably, a leak-proof plate is fixedly connected to the outer wall of the block. The leak-proof plate is located between the block and the inner wall of the upper shell, which increases the contact area between the block and the inner wall of the upper shell and extends the sealing path to prevent external impurities from entering the internal space through the slot.

[0011] Preferably, a fixing block is fixedly connected to the outer wall of the upper shell, and a pressure plate is rotatably connected to the top of the fixing block. The pressure plate can rotate to the bottom and abut against the top of the lever block to prevent the block from retracting by means of mechanical blocking.

[0012] Preferably, the protective mechanism also includes bolts, which pass through the fixing block, the upper shell and the lower shell in sequence and are threadedly connected to the lower shell, for securing and locking the closed upper shell and lower shell.

[0013] Preferably, a sealing gasket is fixedly connected to the bottom of the upper shell. The sealing gasket is located on the closed contact surface between the upper shell and the lower shell, and the elastic deformation of the sealing gasket is used to fill the tiny assembly gap between the upper shell and the lower shell.

[0014] Preferably, the inner wall of the outer ring is slidably connected with multiple push rods, and the outer wall of the fixed ring is provided with multiple rod grooves. The position of the rod groove corresponds one-to-one with the position of the push rod. One end of the push rod is inserted into the rod groove, and the displacement of the pipeline is adapted by the expansion and contraction of the push rod in the rod groove.

[0015] Preferably, the inner wall of the outer ring is slidably connected with multiple spring dampers, and the other end of the top rod passes through the middle of the spring dampers, using the spring dampers to absorb vibration energy and provide a restoring force.

[0016] Preferably, the outer ring and the fixed ring are concentrically distributed in their natural state, and the top rods are evenly distributed radially along the outer ring to ensure that the outdoor pipe is in a static state of force balance.

[0017] This utility model has the following beneficial effects:

[0018] 1. This utility model solves the problem of rust and corrosion and gas leakage at the flange connection of outdoor gas pipeline flanges caused by wind, sand and rain erosion in the prior art. It uses a sliding block to block the gap at the closure of the upper and lower shells, and a filler block to fill the internal space of the block and a leak-proof plate to assist in sealing.

[0019] 2. This utility model, by setting up a fixing mechanism including a fixed ring, an outer ring, and radially distributed top rods and spring damping, utilizes the extension and retraction of the top rods in the rod groove and the compression and rebound characteristics of the spring damping to solve the problem in the prior art where rigid connections between outdoor pipes and buildings are easily affected by wind, rain or building vibrations, leading to loosening and damage of the pipe joints. It achieves the effect of absorbing multi-directional vibration energy, allowing the pipe to generate elastic buffering when under force and achieve automatic reset and centering, thereby protecting the pipe from vibration damage. Attached Figure Description

[0020] Figure 1 This is a perspective view of a gas pipeline safety protection device proposed in this utility model;

[0021] Figure 2 This is a schematic diagram of a flange for a gas pipeline safety protection device proposed in this utility model;

[0022] Figure 3 This is a partial structural schematic diagram of a gas pipeline safety protection device proposed in this utility model;

[0023] Figure 4 This is a schematic diagram of the upper shell of a gas pipeline safety protection device proposed in this utility model;

[0024] Figure 5 This is a partial structural cross-sectional view of a gas pipeline safety protection device proposed in this utility model;

[0025] Figure 6 This is a schematic diagram of a stop block for a gas pipeline safety protection device proposed in this utility model;

[0026] Figure 7 This is a cross-sectional view of the outer ring of a gas pipeline safety protection device proposed in this utility model;

[0027] Figure 8 for Figure 7 A magnified view of point A.

[0028] Legend:

[0029] 1. Outdoor pipes; 2. Flanges; 3. Protective mechanisms; 301. Upper shell; 302. Lower shell; 303. Clamping block; 304. Stop block; 305. Slide groove; 306. Sliding block; 307. Filling block; 308. Leak-proof plate; 309. Pulling block; 310. Pulling groove; 311. Fixing block; 312. Pressure plate; 313. Sealing gasket; 314. Bolts; 4. Fixing mechanisms; 401. Fixing ring; 402. Mounting bracket; 403. Outer ring; 404. Top rod; 405. Rod groove; 406. Spring damping. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0031] Example:

[0032] Please refer to Figures 1 to 8 This utility model provides a gas pipeline safety protection device, which aims to solve the problems in the prior art where the flange 2 connection of the gas pipeline is easily corroded by the environment, leading to leakage, and the rigid connection is easily damaged by vibration.

[0033] Please refer to Figure 1 and Figure 2 The gas pipeline safety protection device includes an outdoor pipeline 1 and a flange 2 connected to the end of the outdoor pipeline 1. The outer wall of the outdoor pipeline 1 is provided with a protective mechanism 3 and a fixing mechanism 4. The protective mechanism 3 covers the outside of the flange 2 and is used to seal and protect the flange 2 to prevent external wind, sand and rain from corroding the flange 2. The fixing mechanism 4 is installed between the outdoor pipeline 1 and the building and is used to provide elastic support and shock absorption for the outdoor pipeline 1.

[0034] Please refer to Figure 3 , Figure 4 and Figure 5The protective mechanism 3 includes an upper shell 301 and a lower shell 302 that are rotatably connected. The upper shell 301 and the lower shell 302 can rotate relative to each other to open or close. A locking block 303 is fixedly connected to the inner wall of the upper shell 301 and the lower shell 302. The inner wall shape of the locking block 303 is adapted to the outer shape of the flange 2. When the upper shell 301 and the lower shell 302 are closed, the locking block 303 located in the upper shell 301 and the locking block 303 located in the lower shell 302 respectively engage with the top and bottom of the flange 2, thereby axially positioning the protective mechanism 3 at the flange 2.

[0035] A stop 304 is slidably connected to the inner wall of the upper shell 301. The stop 304 can slide along the inner wall of the upper shell 301 towards the lower shell 302 to block the closed gap between the upper shell 301 and the lower shell 302. Two sliding grooves 305 are provided on the outer wall of the stop 304. Two sliders 306 are fixedly connected to the inner wall of the upper shell 301. The sliders 306 are slidably engaged in the sliding grooves 305. The cooperation between the sliders 306 and the sliding grooves 305 restricts the sliding path of the stop 304 and prevents the stop 304 from deviating. A lever 309 is fixedly connected to the middle of the outer wall of the stop 304. A lever groove 310 is provided on the outer wall of the upper shell 301. The lever 309 passes through the lever groove 310 and extends to the outside of the upper shell 301. The operator moves the stop 304 along the sliding groove 305 by turning the lever 309 that extends to the outside.

[0036] Please refer to Figure 3 , Figure 5 and Figure 6 The filling block 307 is fixedly connected to the inner wall of the lower shell 302. There are two filling blocks 307. The position of the filling block 307 corresponds to the position of the stop block 304. The shape of the filling block 307 is adapted to the cross-sectional shape of the stop block 304 and can be locked into the bottom of the stop block 304. When the stop block 304 is driven by external force to slide down into the lower shell 302, the opening at the bottom of the stop block 304 is just fitted onto the outside of the filling block 307, so that the filling block 307 fills the internal space of the stop block 304. Thus, when the stop block 304 slides into place, a sealed structure is formed to prevent external impurities from entering the interior of the protective mechanism 3 through the hollow part of the stop block 304.

[0037] Please refer to Figure 1 Figure 3 and Figure 4 A leak-proof plate 308 is fixedly connected to the outer wall of the block 304. The leak-proof plate 308 is located between the block 304 and the inner wall of the upper shell 301. The setting of the leak-proof plate 308 increases the contact area and sealing path between the block 304 and the inner wall of the upper shell 301, preventing external impurities from entering the internal space through the groove 310, and further improving the sealing performance of the protective mechanism 3.

[0038] A fixing block 311 is fixedly connected to the outer wall of the upper shell 301. A pressure plate 312 is rotatably connected to the top of the fixing block 311. The pressure plate 312 can rotate relative to the fixing block 311. When the push block 309 slides down along the push groove 310 to the bottom, the operator rotates the pressure plate 312 so that the pressure plate 312 rotates to the bottom and abuts against the top of the push block 309. The physical obstruction of the push block 309 by the pressure plate 312 prevents the stop block 304 from retracting due to vibration or gravity, thereby ensuring that the protective mechanism 3 is in a continuous sealing state.

[0039] The protective mechanism 3 also includes bolts 314, which pass through the fixing block 311, the upper shell 301 and the lower shell 302 in sequence and are threadedly connected to the lower shell 302. The bolts 314 fasten the closed upper shell 301 and lower shell 302 to prevent the upper shell 301 and lower shell 302 from opening accidentally.

[0040] As a preferred embodiment, to enhance the airtightness after the upper shell 301 and lower shell 302 are closed, please refer to... Figure 4 and Figure 5 A sealing gasket 313 is fixedly connected to the bottom of the upper shell 301. The sealing gasket 313 is located on the closed contact surface between the upper shell 301 and the lower shell 302. When the upper shell 301 and the lower shell 302 are locked together by bolts 314, the sealing gasket 313 undergoes elastic deformation under the squeezing action of the upper shell 301 and the lower shell 302, thereby filling the tiny gap between the contact surfaces of the upper shell 301 and the lower shell 302, effectively preventing gas or liquid from seeping in from the joint surface.

[0041] As another preferred embodiment, to achieve elastic support and shock absorption for outdoor pipe 1, please refer to... Figure 1 and Figure 7 In the fixing mechanism 4, multiple push rods 404 are slidably connected to the inner wall of the outer ring 403. Multiple rod grooves 405 are opened on the outer wall of the fixing ring 401. The positions of the rod grooves 405 correspond one-to-one with the positions of the push rods 404. One end of the push rod 404 is inserted into the rod groove 405. The push rods 404 are distributed radially along the outer ring 403, which can support the fixing ring 401 from multiple directions. The depth of the rod groove 405 is greater than the depth of the push rod 404 inserted into the rod groove 405, so that the push rod 404 has a certain amount of room to move in the rod groove 405, allowing the outdoor pipe 1 to undergo a certain degree of displacement when subjected to force.

[0042] As another preferred embodiment, in order to absorb vibration energy and achieve automatic reset, please refer to... Figure 7 and Figure 8The bottom of the outer ring 403 is fixed with a mounting bracket 402, which can fix the safety protection device in a preset position. Multiple spring dampers 406 are slidably connected to the inner wall of the outer ring 403. The other end of the top rod 404 passes through the middle of the spring dampers 406. When the outdoor pipe 1 is vibrated, causing the fixed ring 401 and the outer ring 403 to move relative to each other, the top rod 404 in the direction of force is pushed by the fixed ring 401 to retract into the outer ring 403. At this time, the spring dampers 406 are compressed and generate damping force, absorbing the energy generated by the vibration. When the vibration disappears, the compressed spring dampers 406 release their elasticity, push the top rod 404 to reset, and then drive the fixed ring 401 and the outdoor pipe 1 back to the initial position.

[0043] As another preferred embodiment, to ensure the stability of the safety protection device under static conditions, please refer to... Figure 7 The outer ring 403 and the fixed ring 401 are concentrically distributed in their natural state, and the top rod 404 is evenly distributed around the outer ring 403, so that the outdoor pipe 1 can remain in the geometric center position when it is not disturbed by external forces, ensuring uniform force distribution.

[0044] Working principle: After the outdoor pipes 1 are connected via flange 2, the operator needs to install the protective mechanism 3. First, open the upper shell 301 and lower shell 302, place the lower shell 302 over the outside of the outdoor pipe 1, and engage the locking block 303 on the inner wall of the lower shell 302 with the bottom of the flange 2. Then, flip the upper shell 301 to close it with the lower shell 302. During this process, the locking block 303 on the inner wall of the upper shell 301 engages with the top of the flange 2, thus positioning the protective mechanism 3 at the flange 2. After the upper shell 301 and lower shell 302 are closed, there is still a gap at the closure. The operator moves the lever 309 downward from the lever groove 310. At this time, the stop block 304 slides downward towards the lower shell 302, blocking the gap between the upper shell 301 and the lower shell 302. During this process, the slider 306 engages with the groove 305 to generate relative displacement, preventing the sliding path of the stop block 304 from deviating. As the bottom of the stop block 304 slides into the lower shell 302, the filling block 307 engages with the hollow structure at the bottom of the stop block 304, filling the internal space of the stop block 304. Together with the leak-proof plate 308 and the sealing gasket 313, multiple seals are achieved to prevent external impurities from entering the upper shell 301 and the lower shell 302 through the stop block 304. After the seal is completed, the pressure plate 312 is rotated to the bottom to abut against the top of the lever block 309 to prevent the stop block 304 from retracting. Then, the bolts 314 are used to fasten and lock through the fixing block 311, the upper shell 301 and the lower shell 302 in sequence, completing the installation of the protective mechanism 3.

[0045] When the outdoor pipe 1 is installed and used in the external environment, it will be affected by wind, rain and vibration of buildings. At this time, the fixing mechanism 4 plays a role. When the outdoor pipe 1 is vibrated, the centers of the fixing ring 401 and the outer ring 403 are offset from each other. At this time, the push rods 404 in different directions are subjected to different forces according to the offset direction of the outdoor pipe 1. The push rods 404 in the direction of force are pushed by the fixing ring 401 and retract into the outer ring 403. At this time, the spring damper 406 is compressed and absorbs the vibration energy. The push rods 404 in each direction coordinate to allow the outdoor pipe 1 to sway slightly, avoiding damage caused by rigid connection. After the vibration ends, the push rods 404 in different directions are pushed together by the spring damper 406 under the rebound action, and automatically push the outdoor pipe 1 back to the position concentric with the outer ring 403.

Claims

1. A safety protection device for gas pipelines, comprising: Outdoor pipe (1), the end of the outdoor pipe (1) is equipped with a flange (2), and the outer wall of the outdoor pipe (1) is provided with a protective mechanism (3) and a fixing mechanism (4). The protective mechanism (3) is characterized in that it includes an upper shell (301), a lower shell (302) is rotatably connected to the bottom of the upper shell (301), the upper shell (301) and the lower shell (302) are slidably connected to the outside of the outdoor pipe (1), a locking block (303) is fixedly connected to the inner wall of the upper shell (301) and the inner wall of the lower shell (302), a stop block (304) is slidably connected to the inner wall of the upper shell (301), a sliding groove (305) is provided on the outer wall of the stop block (304), a slider (306) is fixedly connected to the inner wall of the upper shell (301), the slider (306) is slidably locked inside the sliding groove (305), a lever block (309) is fixedly connected to the middle of the outer wall of the stop block (304), and a lever groove (310) is provided on the outer wall of the upper shell (301). The fixing mechanism (4) includes a fixing ring (401) and a mounting bracket (402). The fixing ring (401) is fixedly connected to the outer wall of the outdoor pipe (1). The mounting bracket (402) is installed on the bottom of the outer side of the outdoor pipe (1). An outer ring (403) is fixedly connected to the top of the mounting bracket (402). The outer ring (403) is sleeved on the outside of the fixing ring (401).

2. The gas pipeline safety protection device according to claim 1, characterized in that, A filling block (307) is fixedly connected to the inner wall of the lower shell (302). The position of the filling block (307) corresponds to the position of the stop block (304). The shape of the filling block (307) is adapted to the cross-sectional shape of the stop block (304) and is snapped into the inner wall of the stop block (304).

3. A gas pipeline safety protection device according to claim 1, characterized in that, A leak-proof plate (308) is fixedly connected to the outer wall of the stop (304), and the leak-proof plate (308) is located between the stop (304) and the inner wall of the upper shell (301).

4. A gas pipeline safety protection device according to claim 1, characterized in that, The outer wall of the upper shell (301) is fixedly connected to a fixing block (311), and a pressure plate (312) is rotatably connected to the top of the fixing block (311). When the pressure plate (312) rotates to the bottom, it abuts against the top of the lever block (309).

5. A gas pipeline safety protection device according to claim 4, characterized in that, The protective mechanism (3) also includes a bolt (314), which passes through the fixing block (311), the upper shell (301) and the lower shell (302) in sequence and is threadedly connected to the lower shell (302).

6. A gas pipeline safety protection device according to claim 1, characterized in that, A sealing gasket (313) is fixedly connected to the bottom of the upper shell (301), and the sealing gasket (313) is located on the closed contact surface between the upper shell (301) and the lower shell (302).

7. A gas pipeline safety protection device according to claim 1, characterized in that, The inner wall of the outer ring (403) is slidably connected with a plurality of push rods (404), and the outer wall of the fixed ring (401) is provided with a plurality of rod grooves (405). The position of the rod grooves (405) corresponds one-to-one with the position of the push rods (404), and one end of the push rods (404) is inserted into the rod grooves (405).

8. A gas pipeline safety protection device according to claim 7, characterized in that, The inner wall of the outer ring (403) is slidably connected with a plurality of spring dampers (406), and the other end of the push rod (404) passes through the middle of the spring dampers (406).

9. A gas pipeline safety protection device according to claim 7, characterized in that, The outer ring (403) and the fixed ring (401) are concentrically distributed in their natural state, and the top rod (404) is distributed radially along the outer ring (403).

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