FGH inlet bypass duct

Abstract

The utility model relates to industrial automation technical field, proposes a kind of FGH entrance bypass pipeline, including two water pipes of switch valve and being set to its both sides, the both sides of switch valve are inserted with inserting pipe, and the one end of water pipe is inserted between inserting pipe, connecting assembly is set on the outside wall of inserting pipe, and water pipe is fixedly connected between connecting assembly and switch valve, two sealing components are symmetrically set on the outside wall of inserting pipe, and the outside wall of two sealing components respectively with switch valve and water pipe between contact, the inside wall of inserting pipe is fixedly installed with fixed frame, through the sealing component on inserting pipe, the tiny gap between inserting pipe and water pipe and switch valve can be effectively filled, prevent fluid, gas or other medium leakage, ensure the sealing property of system, while again under the action of fixed frame and conical shell, the pressure shock wave generated by water hammer can be dispersed, reduce the impact force of water flow, reduce the damage of water hammer to water pipe.

Description

Technical Field

[0001] This utility model relates to the field of industrial automation technology, specifically to an FGH inlet bypass pipe. Background Technology

[0002] In modern energy systems, natural gas heating systems (FGH systems, Fuel Gas Heaters) are widely used in hot water supply, gas heating, and industrial production. The application of FGH systems in the natural gas field mainly refers to FGH units, which are high-temperature, high-pressure devices primarily used to process high-temperature, high-pressure natural gas. These units include a normal-temperature natural gas inlet, a high-temperature natural gas outlet, a hot air inlet, and a cold air outlet. Their main function is to increase the temperature and pressure of natural gas, thereby achieving efficient energy utilization. In these systems, pipelines, valves, and other key equipment work together to ensure the stable transmission and heating of fluids (such as hot water and natural gas). To ensure system continuity and stability, a bypass pipeline, namely the FGH inlet bypass pipeline, is often designed. The main function of this bypass pipeline is to provide a backup path so that fluids or other media can continue to flow in the event of a failure in the main system or the need for maintenance, thereby avoiding system shutdown or functional interruption.

[0003] In existing FGH systems, especially in situations involving high and low pressure differences, a common configuration is to use a bypass valve to depressurize high-pressure fluids (such as hot water in an economizer) into the low-pressure return water line. The purpose of this design is to regulate pressure and flow when necessary, preventing excessive pressure in the system and thus protecting equipment. However, this design also has certain drawbacks, particularly the high-pressure surge that occurs when the valve opens.

[0004] When the bypass valve opens, high-pressure fluid rapidly enters the low-pressure pipeline. This instantaneous pressure change can trigger water hammer, a pressure fluctuation caused by a drastic change in fluid velocity. This fluctuation can not only cause pipeline vibration but may also damage critical equipment such as pipelines and valves, leading to system instability or damage. Utility Model Content

[0005] This invention proposes an FGH inlet bypass pipeline, which solves the problem in related technologies where high-pressure fluid instantly enters the low-pressure pipeline when the bypass valve is opened, causing water hammer and resulting in pipeline vibration.

[0006] The technical solution of this utility model is as follows: An FGH inlet bypass pipeline includes a switch valve and two water pipes disposed on both sides thereof. The switch valve has insertion connectors on both sides, and one end of each water pipe is inserted into the insertion connector. A connecting component is disposed on the outer wall of the insertion connector, and the water pipe is fixedly connected to the switch valve through the connecting component. Two sealing components are symmetrically disposed on the outer wall of the insertion connector, and the outer walls of the two sealing components are respectively in contact with the switch valve and the water pipe. A fixing bracket is fixedly installed on the inner wall of the insertion connector, and a conical shell is fixedly installed on the inner side of the fixing bracket. Multiple through holes are opened on the outer wall of the conical shell. A buffer component is disposed on the inner side of one of the water pipes, and the buffer component is located behind the conical shell.

[0007] Preferably, the sealing assembly includes an annular groove formed on the outer wall of the insertion tube, and a sealing ring is provided on the inner side of the annular groove, the sealing ring being a high-temperature resistant sealing ring.

[0008] Preferably, the connecting assembly includes a first flange fixedly installed on the outer wall of the water pipe, a second flange fixedly installed on the outer wall of the insertion pipe, and the water pipe and the insertion pipe are fixed to the switch valve by bolts and nuts through the first flange and the second flange.

[0009] Preferably, two sealing gaskets are fitted on the outer wall of the insertion pipe, and the two sealing gaskets are respectively located on both sides of the second flange. The sealing gaskets are rubber sealing gaskets.

[0010] Preferably, the buffer assembly includes an annular frame fixedly installed on the inner wall of the water pipe, and multiple T-shaped rods are sequentially arranged in a circular array on the annular frame, with a buffer cylinder fixedly installed at the other end of the multiple T-shaped rods.

[0011] Preferably, a spring is provided on the outer wall of the T-shaped rod, and the spring is located between the buffer cylinder and the annular frame. The inner cavity of the buffer cylinder is a hollow structure, and the inner wall surface is covered with a sound-absorbing layer.

[0012] Preferably, a support frame for enhancing the structural stability of the buffer cylinder is fixedly installed on the inner wall of the buffer cylinder. The support frame is made of high-strength composite material.

[0013] Preferably, the buffer cylinder is funnel-shaped, and the outer wall of the conical shell has a plurality of tiny through holes that can effectively reduce the flow velocity of water.

[0014] Compared with existing technologies, the working principle and beneficial effects of this utility model are as follows:

[0015] The sealing components on the connector effectively fill the tiny gaps between the connector and the water pipe and the switch valve, preventing leakage of fluid, gas or other media and ensuring the system's tightness. At the same time, the fixed frame and conical shell can disperse the pressure shock waves generated by water hammer, reduce the impact force of the water flow, and reduce the damage of water hammer to the water pipe.

[0016] By using buffer components inside the water pipe, the spatial structure of fluid flow can be altered, thereby mitigating the water hammer effect, improving the buffering effect of water hammer, and preventing strong vibrations or noise from the pipeline system, thus protecting the pipeline system and ensuring the safe operation of the entire pipeline system. Attached Figure Description

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] Figure 1 This is a cross-sectional structural diagram of the water pipe proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the overall structure proposed in this utility model;

[0020] Figure 3 A schematic diagram of the conical shell structure is provided for this utility model;

[0021] Figure 4 A schematic diagram of the buffer assembly is provided for this utility model;

[0022] Figure 5 A schematic diagram of the sealing assembly is provided for this utility model.

[0023] In the diagram: 1. Switch valve; 2. Water pipe; 3. Connecting pipe; 41. First flange; 42. Second flange; Sealing assembly; 51. Annular groove; 52. Sealing ring; 6. Fixing bracket; 7. Conical shell; 8. Buffer assembly; 81. Annular frame; 82. T-shaped rod; 83. Buffer cylinder; 84. Spring; 9. Sealing gasket; 10. Support frame. Detailed Implementation

[0024] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model. Example

[0025] Please see Figure 1 - Figure 5An FGH inlet bypass pipeline includes a switch valve 1 and two water pipes 2 disposed on both sides of the switch valve 1. Insertion pipes 3 are inserted into both sides of the switch valve 1, and one end of each water pipe 2 is inserted into the insertion pipe 3. A connecting component 4 is disposed on the outer wall of the insertion pipe 3, and the water pipe 2 is fixedly connected to the switch valve 1 through the connecting component 4. Two sealing components 5 are symmetrically disposed on the outer wall of the insertion pipe 3, and the outer walls of the two sealing components 5 are in contact with the switch valve 1 and the water pipe 2, respectively. A fixing bracket 6 is fixedly installed on the inner wall of the insertion pipe 3, and a conical shell 7 is fixedly installed on the inner side of the fixing bracket 6. Multiple through holes are opened on the outer wall of the conical shell 7.

[0026] Two sealing components 5 installed on the outer wall of the spigot pipe 3 effectively prevent liquid leakage between the water pipe 2 and the switch valve 1, ensuring the system's tightness. These sealing components 5 provide effective isolation and sealing between the water pipe 2 and the switch valve 1, avoiding leakage problems caused by loose pipe connections or material aging, and increasing the system's safety and stability. The fixing bracket 6 fixedly installed on the inner wall of the spigot pipe 3 improves the strength and stability of the pipe connection. The fixing bracket 6 can prevent the spigot pipe 3 from shifting or being damaged in the piping system, thereby reducing pipe failures caused by loose installation or long-term use.

[0027] The connection between water pipe 2 and switch valve 1 is achieved through connecting assembly 4, a design that facilitates pipe disassembly and installation. The plug-in connection simplifies pipe replacement and repair, reducing downtime and maintenance costs. The design of switch valve 1 allows for more flexible fluid control within the piping system. Switching switch valve 1 enables rapid shut-off or adjustment of water flow, facilitating effective system control under varying operating conditions.

[0028] The well-designed combination of the connecting component 4 and the sealing component 5 allows the system to withstand certain high-pressure or high-temperature environments, making it suitable for demanding industrial applications such as the transmission of high-temperature or high-pressure fluids, thus ensuring the service life and reliability of the pipeline system. Multiple through-holes on the outer wall of the conical shell 7 effectively guide fluid flow, reducing fluid resistance within the pipe and improving water flow performance while minimizing energy loss. The plug-in design between the connector 3 and the water pipe 2 enhances the pipeline system's vibration resistance. The tight connection between the connector 3 and the water pipe 2, along with the support of the sealing component 5, effectively resists external vibrations or impacts, making it suitable for environments with significant vibration.

[0029] This utility model provides an FGH inlet bypass pipe, which, through the connecting component 4, enables the water pipe 2 and the insertion pipe 3 to be stably connected to the switch valve 1. Then, with the cooperation of the sealing component 5, the switch valve 1 and the insertion pipe 3 inside the water pipe 2 can improve the sealing effect between the switch valve 1, the water pipe 2 and the insertion pipe 3. Then, when the water flows through the conical shell 7 with through holes on the fixing frame 6, it can disperse the pressure shock wave generated by the water hammer, reduce the impact force of the water flow, and reduce the damage of the water hammer to the water pipe 2.

[0030] The sealing assembly 5 includes an annular groove 51 formed on the outer wall of the connector 3, and a sealing ring 52 is provided on the inner side of the annular groove 51. The sealing ring 52 on the inner side of the annular groove 51 can effectively fill the tiny gaps between the connector 3 and the water pipe 2 and the switch valve 1, prevent leakage of fluid, gas or other media, and ensure the sealing performance of the system.

[0031] The sealing ring 52 inside the annular groove 51 effectively fills the tiny gaps between the connector 3, water pipe 2, and switch valve 1, preventing leakage of fluid, gas, or other media. The sealing ring design ensures the sealing performance of the pipe connection, avoiding leakage caused by minute gaps and guaranteeing the overall sealing performance of the system. By effectively preventing leakage, the sealing component 5 ensures that fluid or gas does not leak out, reducing potential safety hazards. Especially during the transportation of high-pressure or flammable and explosive media, it can significantly improve system safety and avoid accidents caused by leakage. The sealing ring 52 effectively fills the gaps at the connection, reducing the wear and corrosion of equipment caused by fluid or gas leakage, thereby helping to extend the service life of the pipeline system and related equipment. Good sealing performance also prevents external contaminants from entering the system, maintaining the purity of the internal fluid and the stability of the system.

[0032] The connecting assembly 4 includes a first flange 41 fixedly installed on the outer wall of the water pipe 2, and a second flange 42 fixedly installed on the outer wall of the insertion pipe 3. The water pipe 2 and the insertion pipe 3 are fixedly fastened to the switch valve 1 by the first flange 41 and the second flange 42 with bolts and nuts. The first flange 41 and the second flange 42 are fastened with bolts and nuts so that the insertion pipe 3 and the water pipe 2 can be stably connected to the switch valve 1 for use.

[0033] The first flange 41 and the second flange 42 are fastened together with bolts and nuts, providing a strong mechanical connection force. This connection method allows the spigot pipe 3 and water pipe 2 to be firmly and stably connected to the switch valve 1, preventing loosening or detachment due to vibration, pressure changes, etc. The bolt and nut connection makes the connection between water pipe 2 and spigot pipe 3 very simple, and disassembly and maintenance are relatively easy. When it is necessary to replace parts, clean the pipeline, or perform maintenance, the bolts and nuts can be loosened quickly, thereby reducing downtime and improving maintenance efficiency. Through the flange connection, the pressure at the connection point between water pipe 2 and spigot pipe 3 can be evenly distributed, reducing local stress concentration, thereby enhancing the pipeline system's ability to withstand high pressure. Whether in the process of transporting high-pressure liquids or gases, the flange connection can effectively ensure the sealing and safety of the connection point, ensuring the stability of system operation.

[0034] Two sealing gaskets 9 are fitted on the outer wall of the insertion pipe 3, and the two sealing gaskets 9 are located on both sides of the second flange 42 respectively; the sealing gaskets 9 can effectively fill the small gap between the first flange 41, the second flange 42 and the connection surface of the switch valve 1, prevent the leakage of fluid, gas or other media, and ensure the sealing performance of the system.

[0035] Two gaskets 9 effectively fill the minute gaps between the first flange 41, the second flange 42, and the switching valve 1, thereby preventing leakage of fluids, gases, or other media. The gaskets ensure a tight seal at the connection, preventing energy waste, contamination, or safety hazards caused by leakage. The gaskets 9 not only prevent media leakage but also adapt to different operating pressures and temperature changes, ensuring the stability of the connection and safety during long-term operation. This sealing design is particularly crucial in high-pressure, flammable, and explosive media transport systems, effectively preventing accidents caused by leakage. By filling the tiny connection gaps with the gaskets, the entry of external contaminants and corrosive substances is reduced, preventing damage to the equipment from corrosion and wear. This not only helps maintain the cleanliness of the fluid inside the system but also extends the service life of the switching valve 1, flanges, and piping system, reducing maintenance frequency and costs. Example

[0036] Based on Embodiment 1, in this embodiment: a buffer assembly 8 is provided on the inner side of one of the water pipes 2, and the buffer assembly 8 is located on the rear side of the conical shell 7. The buffer assembly 8 includes an annular frame 81 fixedly installed on the inner wall of the water pipe 2. Multiple T-shaped rods 82 are arranged in a circular array through the annular frame 81. The other ends of the multiple T-shaped rods 82 are fixedly installed with a buffer cylinder 83. A spring 84 is provided on the outer wall of the T-shaped rods 82, and the spring 84 is located in the middle between the buffer cylinder 83 and the annular frame 81. The buffer cylinder 83 is horn-shaped.

[0037] The buffer assembly 8, installed inside the water pipe 2, effectively absorbs and mitigates shock waves or pressure fluctuations in the water flow, especially under conditions of high flow velocity or drastic pressure changes. The design of the spring 84 and buffer cylinder 83 provides elastic response, thereby reducing instantaneous pressure changes within the system and preventing damage to pipes and other components. The T-shaped rod 82, spring 84, and horn-shaped buffer cylinder 83 of the buffer assembly 8 effectively reduce the load on the system caused by water flow pulsation, preventing excessive mechanical vibration and fatigue damage, thus improving the overall stability and service life of the system. By mitigating instantaneous pressure fluctuations in the water flow, wear and aging of pipes and valves can be reduced, extending equipment lifespan. The horn-shaped buffer cylinder 83 helps optimize fluid flow, making the water flow smoother, thereby reducing the generation of eddies and turbulence and optimizing fluid dynamics performance. This helps improve the overall system efficiency, reduce energy loss, and improve the system's fluid transmission effect.

[0038] The technical solution provided in this embodiment is as follows: by using the funnel-shaped buffer cylinder 83, the spatial structure of fluid flow can be changed to alleviate the water hammer effect. At the same time, when the water flow rushes towards the buffer cylinder 83, the buffer cylinder 83 moves stably to one side under the action of the ring frame 81 and the T-shaped rod 82 and squeezes the spring 84. Then, under the action of the spring 84, the buffer cylinder 83 and the water flow can be buffered to a certain extent, thereby reducing the pressure impact of the water flow and preventing the destructive water hammer phenomenon.

[0039] A support frame 10 is fixedly installed on the inner wall of the buffer cylinder 83; the support frame 10 on the inner side of the buffer cylinder 83 can effectively enhance the structural strength and stability of the buffer cylinder 83 and prevent deformation or damage caused by fluid impact.

[0040] The support frame 10 effectively enhances the structural strength of the buffer cylinder 83, making it less prone to deformation or damage when subjected to fluid impact or pressure fluctuations. This enhanced stability ensures that the buffer cylinder maintains its function during long-term use, guaranteeing the reliability of the entire buffer system. The support frame 10 distributes the stress on the inner side of the buffer cylinder 83, reducing local stress concentration and thus improving the load-bearing capacity and responsiveness of the buffer cylinder. This allows the buffer cylinder to more effectively absorb and disperse the energy generated by fluid impact, further improving the system's fluid impact absorption effect and reducing the impact of water hammer or pressure fluctuations. The design of the support frame not only enhances the stability of the buffer cylinder 83 but also reduces the physical damage caused by fluid impact. By effectively distributing the pressure of external forces and fluid impacts, the support frame helps reduce fatigue and damage to the buffer cylinder, thereby extending the service life of the entire system and reducing maintenance costs.

[0041] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An FGH inlet bypass pipeline, comprising a switch valve and two water pipes disposed on both sides thereof, characterized in that, Both sides of the switching valve are connected to connectors, and one end of the water pipe is connected to the connector. A connecting component is provided on the outer wall of the connector, and the water pipe is fixedly connected to the switching valve through the connecting component. Two sealing components are symmetrically arranged on the outer wall of the connector, and the outer walls of the two sealing components are in contact with the switching valve and the water pipe, respectively. A fixing bracket is fixedly installed on the inner wall of the connector, and a conical shell is fixedly installed on the inner side of the fixing bracket. Multiple through holes are opened on the outer wall of the conical shell. A buffer component is provided on the inner side of one of the water pipes, and the buffer component is located on the rear side of the conical shell.

2. The FGH inlet bypass pipeline according to claim 1, characterized in that: The sealing assembly includes an annular groove formed on the outer wall of the insertion tube, and a sealing ring is provided on the inner side of the annular groove. The sealing ring is a high-temperature resistant sealing ring.

3. The FGH inlet bypass pipeline according to claim 1, characterized in that: The connecting assembly includes a first flange fixedly installed on the outer wall of the water pipe, a second flange fixedly installed on the outer wall of the connector, and the water pipe and the connector are fixed to the switch valve by bolts and nuts through the first flange and the second flange.

4. The FGH inlet bypass pipeline according to claim 3, characterized in that: Two sealing gaskets are fitted on the outer wall of the insertion pipe, and the two sealing gaskets are respectively located on both sides of the second flange. The sealing gaskets are rubber sealing gaskets.

5. The FGH inlet bypass pipeline according to claim 1, characterized in that: The buffer assembly includes an annular frame fixedly installed on the inner wall of the water pipe. Multiple T-shaped rods are arranged in a circular array through the annular frame, and a buffer cylinder is fixedly installed at the other end of the multiple T-shaped rods.

6. The FGH inlet bypass pipeline according to claim 5, characterized in that: A spring is provided on the outer wall of the T-shaped rod, and the spring is located between the buffer cylinder and the annular frame. The inner cavity of the buffer cylinder is a hollow structure, and the inner wall surface is covered with a sound-absorbing layer.

7. An FGH inlet bypass pipeline according to claim 6, characterized in that: A support frame for enhancing the structural stability of the buffer cylinder is fixedly installed on the inner wall of the buffer cylinder. The support frame is made of high-strength composite material.

8. An FGH inlet bypass pipeline according to claim 7, characterized in that: The buffer cylinder is horn-shaped, and the outer wall of the conical shell has a number of small through holes that can effectively reduce the flow velocity of water.

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