A multi-furnace integrated valve station

Abstract

The application relates to a multi-furnace integrated valve station, relates to the technical field of an industrial furnace gas supply system, and comprises a valve frame, a gas inlet main pipe and a gas supply branch pipe, the valve frame is assembled and spliced by a plurality of frame bodies; the gas inlet main pipe extends into the valve frame from one end of the valve frame along the length direction and is fixed with the valve frame; the gas supply branch pipe is provided with a plurality of gas supply branch pipes arranged in the valve frame, the plurality of gas supply branch pipes extend along the length direction and are arranged side by side along the width direction, the gas supply branch pipes are communicated with the gas inlet main pipe, natural gas flows to the gas supply branch pipes through the gas inlet main pipe and then supplies gas to a plurality of furnace groups. The application is used to solve the problem that the current valve station needs to be independently arranged to cope with a plurality of furnace groups, thereby causing a large occupied space.

Description

Technical Field

[0001] This application relates to the field of industrial furnace gas supply system technology, and in particular to a multi-furnace integrated valve station. Background Technology

[0002] In the fields of industrial production and energy supply, gas supply systems are crucial for the stable operation of various heating furnaces, smelters, and other equipment. With the continuous expansion of industrial scale, the requirements for the efficiency, stability, and safety of gas supply systems are also increasing.

[0003] Currently, when supplying gas to multiple heating furnaces or smelters, a decentralized valve group layout is often used. This means that each furnace group is equipped with its own set of gas supply valves and piping systems, with each system operating independently. However, this decentralized valve group layout results in a large number of valve groups, occupying a significant amount of space and hindering efficient site utilization and overall layout optimization. Utility Model Content

[0004] This application provides a multi-furnace integrated valve station to solve the problem that current valve stations need to be set up independently to deal with multiple furnace groups, resulting in a large space occupation.

[0005] A multi-furnace integrated valve station, comprising:

[0006] The valve frame is assembled from multiple frame sections.

[0007] The intake manifold extends into the valve frame from one end along its length and is fixed to the valve frame.

[0008] The gas supply branch pipes are provided in multiple ways and are located on the valve frame. The multiple gas supply branch pipes extend along the length direction and are arranged side by side along the width direction. The gas supply branch pipes are all connected to the gas inlet main pipe and are connected to the corresponding furnace group. Natural gas flows from the gas inlet main pipe to the gas supply branch pipes and then supplies gas to the multiple furnace groups.

[0009] By adopting the above technical solution, gas supply to multiple boiler groups can be centrally managed through a single valve station, reducing the footprint of traditional decentralized valve groups and lowering space costs. The frame is modular, allowing for easy adjustment of the number of gas supply branch pipes according to actual needs, flexibly adapting to boiler group clusters of different sizes. The connection structure between the main pipe and branch pipes simplifies the pipeline layout, reduces pressure drop losses, and improves gas supply stability.

[0010] In one embodiment, the main intake pipe includes an intake pipe, a first pipe, a second pipe, and a transition pipe. The intake pipe is located outside the valve frame and natural gas flows into the intake pipe. The first pipe is located on the valve frame and communicates with the intake pipe. The second pipe is located on the valve frame and communicates with the gas supply branch pipe. The second pipe is flush with the gas supply branch pipe. The first pipe is located above the gas supply branch pipe and the second pipe. The transition pipe is located outside the valve frame and is arranged along the height direction. The two ends of the transition pipe are respectively connected to the first pipe and the second pipe.

[0011] By adopting the above technical solution, the valve frame is divided into two layers, and the main intake pipe is moved from the upper layer to the lower layer and connected to the supply branch pipe. The layered arrangement gives the main intake pipe more space and operational convenience, and various safety devices and control devices can be installed in different positions; moreover, the layered layout is clear and facilitates the maintenance and repair of the device.

[0012] In one embodiment, the first pipe is provided with a filter located near the air intake pipe.

[0013] By adopting the above technical solution, particulate impurities (such as rust and dust) in natural gas are intercepted, preventing wear or blockage of downstream equipment (such as pressure reducing valves and solenoid valves) and extending their service life. The filter is located upstream, prioritizing the protection of subsequent precision equipment such as pressure reducing valves and flow meters, ensuring their measurement accuracy and control stability.

[0014] In one embodiment, the first pipe is further provided with a first pressure reducing valve, which is located on the side of the filter away from the air inlet pipe.

[0015] By adopting the above technical solution, the high-pressure natural gas is reduced to a safe operating pressure (e.g., from 4MPa to 0.5MPa), meeting the gas intake requirements of the boiler burners and preventing overpressure damage to the equipment. Pre-pressure reduction also minimizes pressure fluctuations in downstream branch pipes, providing a stable gas supply for each boiler group.

[0016] In one embodiment, the intake manifold further includes a vent pipe and a venting solenoid valve. The vent pipe is connected to the first pipe, the transition pipe, and the second pipe. The venting solenoid valve is located in the vent pipe and is capable of venting.

[0017] By adopting the above technical solution, when the main pipeline pressure exceeds a threshold (e.g., 0.6 MPa), the solenoid valve automatically opens to discharge excess gas into the vent pipe, preventing pipeline rupture or equipment damage. During system maintenance or in case of malfunction, the solenoid valve can be manually triggered to quickly vent the natural gas from the pipeline, reducing safety risks.

[0018] In one embodiment, the intake manifold is further provided with a pressure switch, which is electrically connected to the venting solenoid valve.

[0019] By adopting the above technical solution, the pressure switch monitors the main pipe pressure in real time. When the pressure reaches the set value (e.g., 0.55 MPa), it automatically triggers the solenoid valve to achieve unattended pressure protection. Compared with manual operation, the electrical linkage response speed is faster (millisecond level), and it can promptly deal with sudden overpressure situations.

[0020] In one embodiment, the intake manifold is further provided with a maintenance ball valve, which is located between the second manifold and the supply branch manifold.

[0021] By adopting the above technical solution, when a branch pipe or downstream burner requires maintenance, closing the corresponding ball valve can isolate the gas supply to that branch without shutting down the entire valve station, thus reducing the impact on other boiler units. The hard-seal structure of the ball valve ensures no leakage during maintenance, guaranteeing personnel safety.

[0022] In one embodiment, each of the gas supply branches is equipped with a flow meter and an electrically adjustable valve.

[0023] By adopting the above technical solution, the electric regulating valve dynamically adjusts its opening based on real-time flow feedback (from the flow meter), achieving precise distribution of the gas supply to each furnace group (e.g., ±1% accuracy). Through flow matching, it ensures that each furnace group obtains the optimal air-fuel ratio, improving combustion efficiency and reducing energy consumption and pollutant emissions.

[0024] In one embodiment, the flow meter includes a turbine flow meter and a V-cone flow meter.

[0025] By adopting the above technical solutions, the turbine flow meter achieves high long-term metering accuracy (±0.5%), making it suitable for calculating total consumption; the V-cone flow meter has a fast response (0.1 seconds), enabling it to capture flow fluctuations in real time for closed-loop control and participate in burner control. Simultaneously, it acquires both cumulative and instantaneous flow rates, meeting the dual requirements of billing (cumulative value) and process control (instantaneous value).

[0026] In one embodiment, each of the gas supply branches is also provided with a second pressure reducing valve.

[0027] By adopting the above technical solution, the branch pipe pressure can be further precisely controlled based on the upstream first pressure reducing valve (e.g., reducing it from 0.5MPa to 0.3MPa), adapting to the differentiated pressure requirements of different furnace groups. When the main pipe pressure fluctuates, the second pressure reducing valve can maintain a constant branch pipe pressure, preventing the burner from experiencing flame instability or flameout due to pressure changes.

[0028] In summary, this application includes at least one beneficial effect:

[0029] 1. Centralized management of gas supply to multiple boiler groups through a single valve station reduces the footprint of traditional decentralized valve groups, lowering space costs. The frame is modular, allowing for easy adjustment of the number of gas supply branch pipes to suit different boiler group sizes. The interconnected structure between the main pipe and branch pipes simplifies pipeline layout, reduces pressure drop losses, and improves gas supply stability.

[0030] 2. The valve frame is divided into two layers. The main intake pipe is moved from the upper layer to the lower layer and connected to the supply branch pipe. The layered arrangement gives the main intake pipe more space and operational convenience, allowing for the installation of various safety and control devices in different locations. Furthermore, the layered layout is clear and facilitates the maintenance and repair of the devices.

[0031] 3. The electrically adjustable valve dynamically adjusts its opening based on real-time flow feedback (from the flow meter) to achieve precise distribution of the gas supply to each furnace group (e.g., ±1% accuracy). Through flow matching, it ensures that each furnace group obtains the optimal air-fuel ratio, improves combustion efficiency, and reduces energy consumption and pollutant emissions. Attached Figure Description

[0032] Figure 1 This is a front view structural diagram of a multi-furnace integrated valve station provided in an embodiment of this application;

[0033] Figure 2 This is a top view of the lower structure of a valve frame provided in an embodiment of this application;

[0034] Figure 3 This is a left-side structural schematic diagram of a multi-furnace integrated valve station provided in an embodiment of this application.

[0035] Explanation of reference numerals in the attached diagram: 1. Valve frame; 2. Main intake pipe; 21. Intake pipe; 22. First pipe; 221. Filter; 222. First pressure reducing valve; 23. Second pipe; 24. Transition pipe; 25. Vent pipe; 26. Relief solenoid valve; 27. Pressure switch; 28. Inspection ball valve; 29. ​​Solenoid valve; 3. Supply branch pipe; 31. Flow meter; 311. Turbine flow meter; 312. V-cone flow meter; 32. Electrically adjustable valve; 33. Second pressure reducing valve. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1-3 The multi-furnace integrated valve station provided in this application will be described in further detail.

[0037] Example 1

[0038] Please see Figure 1-3 The multi-furnace integrated valve station provided in this application embodiment includes a valve frame 1, an air inlet main pipe 2, and an air supply branch pipe 3.

[0039] like Figures 1 to 2 As shown, the valve frame 1 is assembled from multiple frame bodies. Specifically, the multiple frame bodies are spliced ​​together along the length, width, and height directions to form the valve frame 1. In this embodiment, the valve frame 1 is a rectangular frame divided into upper and lower layers. This regular shape and stable structure facilitate assembly. The frame bodies are generally made of metal, such as carbon steel, which has good strength and stability and can withstand a certain weight and external impact. Of course, stainless steel can also be used, as it has strong corrosion resistance and is suitable for humid or corrosive gas environments. The frame bodies can be spliced ​​together by welding, which ensures a firm weld and the integrity of the entire valve frame 1; or bolted connections can be used, which facilitates disassembly and assembly, transportation, and subsequent maintenance and adjustment.

[0040] The main inlet pipe 2 extends into the valve frame 1 from one end along its length and is fixed to it. Multiple branch pipes 3 are located on the valve frame 1, extending along its length and arranged side-by-side along its width. Each branch pipe 3 is connected to the main inlet pipe 2 and to its corresponding boiler unit, achieving valve station integration and reducing the floor space occupied by the valve units. Specifically, the main function of the main inlet pipe 2 is to introduce natural gas into the valve station and distribute it to the various branch pipes 3. It is fixed to the valve frame 1 using pipe clamps or other connecting components. These components effectively position the main inlet pipe 2 on the valve frame 1 while facilitating disassembly and adjustment. Each branch pipe 3 is connected to the main inlet pipe 2 by welding or flange connection. Welding ensures good sealing, while flange connection facilitates disassembly and replacement of pipe fittings. The material of the branch pipes 3 can be the same as some parts of the main inlet pipe 2, such as steel pipe. The main intake pipe 2 is connected to multiple gas supply branch pipes 3, and gas is then supplied to each furnace group through the gas supply branch pipes 3. This changes the traditional decentralized valve group layout, eliminating the need to equip each furnace group with a large number of independent valves and pipeline systems, thereby reducing the space occupied and achieving effective use of the site and optimization of the overall layout.

[0041] The main intake pipe 2 includes an intake pipe 21, a first pipe 22, a second pipe 23, and a transition pipe 24. The intake pipe 21 is located outside the valve frame 1, and natural gas first flows into it. The intake pipe 21 is typically made of steel, with thick walls to withstand pressure and ensure a safe and stable flow of natural gas; alternatively, copper pipe can be used, as it has good thermal conductivity and corrosion resistance. The first pipe 22 is located on the upper layer of the valve frame 1 and connects to the intake pipe 21. The first pipe 22 can also be made of steel, and its diameter is determined based on actual gas supply requirements. The inner wall of the first pipe 22 can be smoothed to reduce resistance to natural gas flow. The second pipe 23 and the gas supply branch pipe 3 are located on the lower layer of the valve frame 1. Therefore, the first pipe 22 is located above the gas supply branch pipe 3 and the second pipe 23. The second pipe 23 connects to and is spaced apart from the gas supply branch pipe 3. The material of the second pipe 23 is similar to that of the first pipe 22. The transition pipe 24 is located outside the valve frame 1 and runs along its height. Both ends of the transition pipe 24 are connected to the first pipe 22 and the second pipe 23 respectively, and are sealed using sealing rings and clamps to prevent natural gas leakage. The transition pipe 24 can be constructed by splicing elbows and straight pipes, and its material can be the same as the first pipe 22 and the second pipe 23. This layered structure of the main intake pipe 2 divides the valve frame 1 into two layers. The main intake pipe 2 moves from the upper layer to the lower layer and connects to the gas supply branch pipe 3. This provides the main intake pipe 2 with more space and operational convenience, allowing for the installation of various safety and control devices in different locations. Furthermore, the layered layout is clear, facilitating maintenance and repair of the equipment.

[0042] The first pipe 22 is equipped with a filter 221, which is located near the inlet pipe 21. The filter 221 is typically a mesh filter, and the mesh can be made of stainless steel, which offers high filtration accuracy and durability. Alternatively, an activated carbon filter 221 can be used, which not only filters impurities but also adsorbs some harmful gases. The function of the filter 221 is to remove impurities from the natural gas, ensuring the quality of the natural gas entering the supply branch pipe 3 and preventing impurities from clogging the pipes and equipment. Additionally, a ball valve is installed between the first pipe 22 and the inlet pipe 21 to facilitate control of natural gas flow.

[0043] The first pipe 22 is also equipped with a first pressure reducing valve 222, which is located on the side of the filter 221 away from the inlet pipe 21. The first pressure reducing valve 222 can be a pilot-operated pressure reducing valve, which provides stable pressure reduction and allows for precise pressure adjustment as needed. Alternatively, a diaphragm-type pressure reducing valve can be used, which has a simple structure and lower cost. The function of the first pressure reducing valve 222 is to reduce the natural gas pressure to a suitable range to meet the requirements of subsequent gas supply and equipment use.

[0044] like Figure 3As shown, the intake manifold 2 also includes a vent pipe 25 and a venting solenoid valve 26. The vent pipe 25 can connect to the first pipe 22, the transition pipe 24, and the second pipe 23. The venting solenoid valve 26 is located in the vent pipe 25 and can vent. The vent pipe 25 generally uses the same material as the intake manifold 2, but its diameter can be relatively smaller. The venting solenoid valve 26 can be a normally closed solenoid valve. When the pressure in the intake manifold 2 is normal, the solenoid valve is closed; when the pressure is too high, the solenoid valve opens to vent, preventing excessive pressure in the intake manifold 2 from damaging the equipment and pipes. The intake manifold 2 can also be equipped with a pressure switch 27, which is electrically connected to the venting solenoid valve 26. The pressure switch 27 can be a mechanical pressure switch, which has a simple structure and high reliability; or it can be an electronic pressure switch, which has high accuracy and can monitor pressure more accurately. The pressure in the main pipe is monitored by pressure switch 27. When the pressure exceeds the limit, the switch controls the venting solenoid valve 26 to open and release pressure, ensuring the safety of the entire gas supply system.

[0045] The main intake pipe 2 is also equipped with a maintenance ball valve 28, located between the second pipe 23 and the gas supply branch pipe 3. When maintenance is required on the branch pipe or the burner connected to the branch pipe, the maintenance ball valve 28 is manually closed to prevent natural gas from flowing into the branch pipe, ensuring the safety of the maintenance work. In addition, the main intake pipe 2 is also equipped with a solenoid valve 29. According to European standards, two solenoid valves 29 are required for greater stringency; however, if European standards are not required, only one solenoid valve can be installed.

[0046] Each gas supply branch pipe 3 is equipped with a flow meter 31 and an electrically adjustable valve 32. Specifically, the flow meter 31 includes a turbine flow meter 311 and a V-cone flow meter 312. The turbine flow meter 311 is mainly responsible for measuring the cumulative flow. It senses the gas flow by rotating the turbine. The turbine is generally made of lightweight alloy and can rotate flexibly under the action of gas flow. The sensor of the turbine flow meter 311 detects the rotational speed of the turbine through electromagnetic induction, thereby calculating the cumulative gas flow. The turbine flow meter 311 can be fixed to the gas supply branch pipe 3 by pipe clamp connection. In addition to lightweight alloy, the turbine can also be made of engineering plastics or other materials. The V-cone flow meter 312 is mainly responsible for measuring and feedback the instantaneous flow. It is sensitive and can detect changes in flow in a timely manner and participate in the control of the combustion system. The housing of the V-cone flow meter 312 is usually made of metal, such as carbon steel, to ensure the overall strength and stability of the flow meter 31. The V-cone flow meter 312 can also be connected to the gas supply branch pipe 3 by welding or other methods. The electrically operated regulating valve 32 is generally an electrically operated regulating valve. It controls the opening of the valve core through an electric actuator, thereby regulating the natural gas flow. The connection between the electrically operated regulating valve 32 and the gas supply branch pipe 3 can be a flange connection or a compression fitting connection. In addition to electrically operated regulating valves, pneumatic regulating valves can also be used, which use compressed air to drive the valve core. The valve core material can also be selected from stainless steel or other materials according to different application requirements. The coordinated operation of both ensures that each boiler group receives an accurate and appropriate natural gas supply.

[0047] Each gas supply branch pipe 3 may also be equipped with a second pressure reducing valve 33. The second pressure reducing valve 33 may be similar to the first pressure reducing valve 222, and its function is to further regulate the pressure of natural gas in the gas supply branch pipe 3 to better meet the specific needs of each boiler group.

[0048] The implementation principle of this embodiment is as follows: This multi-furnace integrated valve station achieves integration through the rational arrangement of valve frame 1, main inlet pipe 2, and multiple gas supply branch pipes 3. Multiple frames are spliced ​​together to form valve frame 1, saving space; the layered design of the main inlet pipe 2 facilitates the installation of various safety processing devices for filtering, pressure reduction, and other operations on natural gas; the multiple gas supply branch pipes 3 are connected to the main inlet pipe 2, supplying gas to each furnace group, avoiding the disadvantages of traditional decentralized valve group layouts, reducing the footprint of the valve group, and improving site utilization. Simultaneously, various devices installed on the main inlet pipe 2 and gas supply branch pipes 3, such as filters 221, pressure reducing valves, solenoid valves 29, flow meters 31, and electrically adjustable valves 32, ensure the quality, pressure, and flow stability and safety of the natural gas supply, reducing maintenance and management costs and improving overall efficiency. Compared with traditional gas supply methods, this valve station has significant improvements in efficiency, stability, and safety, making important improvements and contributions to existing technologies.

[0049] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A multi-furnace integrated valve station, characterized in that, include: The valve frame (1) is assembled from multiple frame bodies; The intake manifold (2) extends into the valve frame (1) from one end along the length direction and is fixed to the valve frame (1); The gas supply branch pipe (3) is provided in multiple ways and is located on the valve frame (1). The multiple gas supply branch pipes (3) extend along the length direction and are arranged side by side along the width direction. The gas supply branch pipes (3) are all connected to the main gas inlet pipe (2). The gas supply branch pipes (3) are connected to the corresponding furnace group. Natural gas flows through the main gas inlet pipe (2) to the gas supply branch pipes (3) and then supplies gas to multiple furnace groups.

2. The multi-furnace integrated valve station according to claim 1, characterized in that, The main intake pipe (2) includes an intake pipe (21), a first pipe (22), a second pipe (23), and a transition pipe (24). The intake pipe (21) is located outside the valve frame (1) and natural gas flows into the intake pipe (21). The first pipe (22) is located on the valve frame (1) and communicates with the intake pipe (21). The second pipe (23) is located on the valve frame (1) and communicates with the gas supply branch pipe (3). The second pipe (23) is flush with the gas supply branch pipe (3). The first pipe (22) is located above the gas supply branch pipe (3) and the second pipe (23). The transition pipe (24) is located outside the valve frame (1) and is arranged along the height direction. The two ends of the transition pipe (24) are respectively connected to the first pipe (22) and the second pipe (23).

3. The multi-furnace integrated valve station according to claim 2, characterized in that, The first pipe (22) is provided with a filter (221), which is close to the air inlet pipe (21).

4. A multi-furnace integrated valve station according to claim 3, characterized in that, The first pipe (22) is also provided with a first pressure reducing valve (222), which is located on the side of the filter (221) away from the air inlet pipe (21).

5. A multi-furnace integrated valve station according to claim 2, characterized in that, The intake manifold (2) also includes a vent pipe (25) and a venting solenoid valve (26). The vent pipe (25) is connected to the first pipe (22), the transition pipe (24) and the second pipe (23). The venting solenoid valve (26) is located in the vent pipe (25) and is capable of venting.

6. A multi-furnace integrated valve station according to claim 5, characterized in that, The intake manifold (2) is also equipped with a pressure switch (27), which is electrically connected to the venting solenoid valve (26).

7. A multi-furnace integrated valve station according to claim 2, characterized in that, The intake manifold (2) is also equipped with a maintenance ball valve (28), which is located between the second pipe (23) and the supply branch pipe (3).

8. A multi-furnace integrated valve station according to claim 1, characterized in that, Each of the gas supply branch pipes (3) is equipped with a flow meter (31) and an electric regulating valve (32).

9. A multi-furnace integrated valve station according to claim 8, characterized in that, The flow meter (31) includes a turbine flow meter (311) and a V-cone flow meter (312).

10. A multi-furnace integrated valve station according to claim 1, characterized in that, Each of the gas supply branch pipes (3) is also equipped with a second pressure reducing valve (33).

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