Tunnel fire-fighting pipeline circulating heat supply equipment and control method

Abstract

The invention provides tunnel fire-fighting pipeline circulating heat supply equipment and a control method. The tunnel fire-fighting pipeline circulating heat supply equipment comprises a first heating system, a second heating system and a control system, and a first water inlet pipeline and a first water outlet pipeline are arranged on the two sides of the first heating system correspondingly; a second water inlet pipeline and a second water outlet pipeline are arranged on the two sides of the second heating system respectively; the water inlet main pipeline is connected with the first water inlet pipeline and the second water inlet pipeline; the water outlet main pipeline is connected with the first water outlet pipeline and the second water outlet pipeline; the fire-fighting equipment has the beneficial effects that the first heating system and the second heating system are arranged, heat can be circularly supplied to the fire-fighting pipeline under the control of the controller, standby equipment can be automatically started when a fault occurs in the equipment, a fault alarm and a maintenance instruction are sent out at the same time, and long-term uninterrupted operation of the equipment is guaranteed.

Description

Technical Field

[0001] The present application belongs to the technical field of tunnel fire protection maintenance, and specifically relates to a tunnel fire protection pipeline circulating heating equipment and a control method. Background Art

[0002] When a fire occurs in a tunnel, the fire-fighting pipes can promptly deliver the water or other fire-fighting media (such as foam, etc.) needed for fire-fighting, provide the necessary conditions for fire-fighting work, ensure the safety of life of people in the tunnel and reduce property losses.

[0003] The water inside the existing tunnel fire-fighting pipes is prone to freezing when the temperature is low in winter, which affects the subsequent fire-fighting use. Therefore, in order to solve the above problem, a tunnel fire-fighting pipe circulating heating equipment and control method are needed, which can circulate heat to the fire-fighting pipes and automatically enable backup equipment when the circulating pump or heater fails, and at the same time issue a fault alarm and maintenance instructions to ensure long-term uninterrupted operation of the equipment. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0005] In order to solve the above problems, the first aspect of the present application provides a tunnel fire protection pipeline circulating heating device, comprising:

[0006] A first heating system, wherein a first water inlet pipeline and a first water outlet pipeline are respectively provided on both sides of the first heating system;

[0007] A second heating system, wherein a second water inlet pipeline and a second water outlet pipeline are respectively provided on both sides of the second heating system;

[0008] a main water inlet pipeline, the main water inlet pipeline being connected to the first water inlet pipeline and the second water inlet pipeline;

[0009] A water outlet main pipeline, the water outlet main pipeline is connected to the first water outlet pipeline and the second water outlet pipeline;

[0010] The first heating system and the second heating system are connected in parallel to the water tank and the fire fighting pipeline through the water inlet main pipeline and the water outlet main pipeline;

[0011] A controller is connected to the first heating system and the second heating system, and is used to control the opening or closing of the first heating system or the second heating system.

[0012] Optionally, the first heating system comprises:

[0013] A first pump body, wherein a water inlet of the first pump body is connected to the first water inlet pipeline;

[0014] A first heater body, a first connecting pipeline is arranged between a water inlet of the first heater body and a water outlet of the first pump body, and the water outlet of the first heater body is connected to the first water outlet pipeline.

[0015] Optionally, a first water inlet flowmeter is provided on the first connecting pipeline, a first water inlet control valve is provided on the first water inlet pipeline, and a first water outlet flowmeter and a first water outlet control valve are provided on the first water outlet pipeline.

[0016] Optionally, the first heater body comprises:

[0017] A first heating cylinder, wherein a first shell is disposed outside the first heating cylinder, a first inlet flange and a first outlet flange are disposed on the first heating cylinder, the first inlet flange is connected to the first connecting pipeline, and the first outlet flange is connected to the first water outlet pipeline;

[0018] A first heating tube, wherein a plurality of the first heating tubes are arranged in the first heating cylinder, and a first fixing flange is arranged between the first heating tube and the first heating cylinder;

[0019] A first temperature measuring element, the first temperature measuring element is arranged inside the first heating cylinder;

[0020] a second temperature measuring component, wherein the second temperature measuring component is disposed in the first outlet flange;

[0021] A first junction box is connected to the first heating tube.

[0022] Optionally, the second heating system comprises:

[0023] a second pump body, wherein a water inlet of the second pump body is connected to the second water inlet pipeline;

[0024] A second heater body, a second connecting pipeline is arranged between the water inlet of the second heater body and the water outlet of the second pump body, and the water outlet of the second heater body is connected to the second water outlet pipeline.

[0025] Optionally, a second water inlet flowmeter is provided on the second connecting pipeline, a second water inlet control valve is provided on the second water inlet pipeline, and a second water outlet flowmeter and a second water outlet control valve are provided on the second water outlet pipeline.

[0026] Optionally, the second heater body comprises:

[0027] A second heating cylinder, wherein a second shell is disposed outside the second heating cylinder, a second inlet flange and a second outlet flange are disposed on the second heating cylinder, the second inlet flange is connected to the second connecting pipeline, and the second outlet flange is connected to the second water outlet pipeline;

[0028] A second heating tube, wherein a plurality of the second heating tubes are arranged in the second heating cylinder, and a second fixing flange is arranged between the second heating tube and the second heating cylinder;

[0029] a third temperature measuring element, the third temperature measuring element being arranged inside the second heating cylinder;

[0030] a fourth temperature measuring component, wherein the fourth temperature measuring component is arranged in the second outlet flange;

[0031] A second junction box is connected to the second heating tube.

[0032] Optionally, the controller is electrically connected to the first water inlet control valve, the second water inlet control valve, the first water outlet control valve, the second water outlet control valve, the first temperature measuring device, the second temperature measuring device, the third temperature measuring device, the fourth temperature measuring device, the first water inlet flow meter, the second water inlet flow meter, the first water outlet flow meter and the second water outlet flow meter.

[0033] Optionally, it also includes a bottom plate, which is arranged at the bottom of the first heating system, the second heating system and the controller.

[0034] A second aspect of the present application provides a control method for a tunnel fire protection pipeline circulating heating device, using the tunnel fire protection pipeline circulating heating device as described in any one of the above items, comprising the following steps:

[0035] S1. In the absence of a fire, the controller determines whether the operating condition of the first heating system or the second heating system is abnormal based on the temperature or flow rate information of the internal fluid of the first heating system or the second heating system, and controls the opening or closing of the first heating system or the second heating system based on the determination result;

[0036] S2. In the event of a fire, the controller controls the first heating system or the second heating system to shut down.

[0037] Beneficial Effects

[0038] A tunnel fire protection pipe circulating heating equipment and control method provided in the embodiments of the present invention have the following beneficial effects: by setting up a first heating system and a second heating system, the present application can circulate heat to the fire protection pipe under the control of a controller, and when a fault occurs inside the equipment, the backup equipment can be automatically activated, and a fault alarm and maintenance instructions can be issued at the same time to ensure long-term uninterrupted operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a structural diagram of the present invention;

[0040] Figure 2 It is a top view of the structure of the present invention;

[0041] Figure 3 is a structural diagram of a first heater body of the present invention;

[0042] Figure 4 This is a structural diagram of the second heater body of the present invention.

[0043] The reference numerals are as follows:

[0044] 1. First heating system; 2. First water inlet pipeline; 3. First water outlet pipeline; 4. Second heating system; 5. Second water inlet pipeline; 6. Second water outlet pipeline; 7. Main water inlet pipeline; 8. Main water outlet pipeline; 9. Controller; 10. First pump body; 11. First heater body; 12. First connecting pipeline; 13. First water inlet flowmeter; 14. First water inlet control valve; 15. First water outlet flowmeter; 16. First water outlet control valve; 17. First heating cylinder; 18. First inlet flange; 19. First outlet flange; 2 0. First heating tube; 21. First temperature measuring element; 22. Second temperature measuring element; 23. First junction box; 24. Second pump body; 25. Second heater body; 26. Second connecting pipeline; 27. Second water inlet flow meter; 28. Second water inlet control valve; 29. ​​Second water outlet flow meter; 30. Second water outlet control valve; 31. Second heating cylinder; 32. Second inlet flange; 33. Second outlet flange; 34. Second heating tube; 35. Third temperature measuring element; 36. Fourth temperature measuring element; 37. Second junction box; 38. Bottom plate. DETAILED DESCRIPTION

[0045] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0046] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0047] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0049] See also Figure 1-4 As shown, according to the first aspect of the present application, a tunnel fire protection pipeline circulating heating device is provided, comprising:

[0050] A first heating system 1, wherein a first water inlet pipe 2 and a first water outlet pipe 3 are respectively arranged on both sides of the first heating system 1;

[0051] A second heating system 4, with a second water inlet pipe 5 and a second water outlet pipe 6 respectively disposed on both sides of the second heating system 4;

[0052] A water inlet main line 7, the water inlet main line 7 is connected to the first water inlet line 2 and the second water inlet line 5;

[0053] A water outlet main pipeline 8, the water outlet main pipeline is connected to the first water outlet pipeline 3 and the second water outlet pipeline 6;

[0054] The first heating system 1 and the second heating system 4 are connected in parallel to the water tank and the fire fighting pipeline through the water inlet main line 7 and the water outlet main line 8;

[0055] The controller 9 is connected to the first heating system 1 and the second heating system 4 , and is used to control the opening or closing of the first heating system 1 or the second heating system 4 .

[0056] The tunnel fire-fighting pipe circulating heating equipment provided in this embodiment has a first heating system 1 and a second heating system 4 arranged in parallel to form one in use and one in standby, which can stably transport heat to the inside of the fire-fighting pipe for anti-freezing. The water in the water tank enters the first heating system 1 through the water inlet main line 7 and the first water inlet pipe 2, and the first heating system 1 heats it. The first water outlet pipe 3 transports the heated hot water to the water outlet main line 8 and feeds it into the fire-fighting pipe, thereby transporting heat to the inside of the fire-fighting pipe; when the first heating system 1 is turned off and the second heating system 4 is used, the water in the water tank enters the second heating system 4 through the water inlet main line 7 and the second water inlet pipe 5, and the second heating system 4 heats it. The second water outlet pipe 6 transports the heated hot water to the water outlet main line 8 and feeds it into the fire-fighting pipe, thereby transporting heat to the inside of the fire-fighting pipe.

[0057] The first heating system 1 and the second heating system 4 are connected in parallel to the water tank and the fire-fighting pipeline through the water inlet main line 7 and the water outlet main line 8, so that in the season with higher temperature or when the fire-fighting pipeline is not in use, there is no need to transport heat to the inside, the water inlet main line 7 and the water outlet main line 8 are both in a closed state, and the first heating system 1 and the second heating system 4 do not need to work. In winter when the temperature is lower, the water inlet main line 7 is directly connected to the water tank, and the water inside the water tank can enter the first heating system 1 or the second heating system 4 for heating, and is fed into the fire-fighting pipeline through the water outlet main line 8 to transport heat to the fire-fighting pipeline, thereby avoiding ice inside the fire-fighting pipeline and affecting the subsequent fire-fighting use.

[0058] The controller 9 is closely connected with the first heating system 1 and the second heating system 4. It collects the operation data of each system in real time through a variety of sensors, including temperature, pressure, flow and other information. Based on these data, the controller 9 determines whether the first heating system 1 and the second heating system 4 are faulty. When the first heating system 1 fails, the controller 9 controls the second heating system 4 to start, so as to realize uninterrupted heat delivery inside the fire-fighting pipe and avoid the possibility of freezing inside the fire-fighting pipe; and when the fire-fighting pipe is in use, water needs to be discharged through the fire-fighting pipe for fire-fighting operations. At this time, the controller 9 controls the first heating system 1 and the second heating system 4 to shut down, which is convenient to use.

[0059] The first heating system 1 comprises:

[0060] A first pump body 10, wherein a water inlet of the first pump body 10 is connected to a first water inlet pipeline 2;

[0061] The first heater body 11 has a first connecting pipeline 12 disposed between a water inlet of the first heater body 11 and a water outlet of the first pump body 10 , and the water outlet of the first heater body 11 is connected to the first water outlet pipeline 3 .

[0062] In this technical solution, the water inlet of the first pump body 10 is connected to the first water inlet pipeline 2, ensuring that the water source can stably flow into the first pump body 10. During operation, the first pump body 10 generates sufficient centrifugal force through the high-speed rotation of the internal impeller, so that the water gains energy and stably flows to the subsequent first connecting pipeline 12. The first heater body 11 is the core component for realizing the heating function. It is connected to the first pump body 10 through the first connecting pipeline 12 to ensure that the water flow can be fed into the first heater body 11. The first heater body 11 is used to heat the water and smoothly transport the heated hot water through the first water outlet pipeline 3, providing continuous and reliable heat for the tunnel fire protection pipeline in a cold environment, ensuring the normal operation of the fire protection system.

[0063] The first connecting pipeline 12 is provided with a first water inlet flowmeter 13 , the first water inlet pipeline 2 is provided with a first water inlet control valve 14 , and the first water outlet pipeline 3 is provided with a first water outlet flowmeter 15 and a first water outlet control valve 16 .

[0064] In this technical solution, the first water inlet flowmeter 13 provided on the first connecting pipeline 12 can accurately measure the water flow entering the first heater body 11 in real time. By monitoring the flow data, the amount of water entering the heater can be accurately grasped, which is crucial for evaluating the working state of the first heater body 11. For example, when the flow data deviates from the preset value, it may mean that the working efficiency of the first pump body 10 has changed, the first connecting pipeline 12 is blocked, or other abnormal conditions occur. At the same time, these flow data can be fed back to the controller 9, so that the controller 9 can adjust the heating power of the first heater body 11 according to the actual flow, ensure that the water is heated to a suitable temperature, and ensure the stability and efficiency of the heating.

[0065] The first water inlet control valve 14 on the first water inlet pipeline 2 is a key component for actively controlling the water inlet flow rate. It can adjust the opening according to system requirements and the data fed back by the first water inlet flowmeter 13. During normal operation, if the first water inlet flowmeter 13 detects an abnormal change in flow rate, the first water inlet control valve 14 can adjust the opening accordingly to restore normal flow rate. In addition, when the first heating system 1 needs to be maintained or overhauled, the first water inlet control valve 14 can be completely closed to cut off the water flow, which is convenient for operators to operate and prevents water leakage from causing damage to the equipment and the surrounding environment.

[0066] The first water outlet flowmeter 15 on the first water outlet pipeline 3 is also used for flow monitoring. It measures the flow of hot water flowing out of the first heater body 11, and combined with the data of the first water inlet flowmeter 13, the heating efficiency of the first heater body 11 and the loss of water during the heating process can be calculated. If the data of the first water outlet flowmeter 15 and the data of the first water inlet flowmeter 13 show unreasonable differences, such as a significant reduction in flow that is not due to normal thermal expansion and contraction, this may indicate that there is scale accumulation, pipe rupture or other faults inside the first heater body 11.

[0067] The first heater body 11 comprises:

[0068] A first heating cylinder 17, a first shell is arranged outside the first heating cylinder 17, a first inlet flange 18 and a first outlet flange 19 are arranged on the first heating cylinder 17, the first inlet flange 18 is connected to the first connecting pipeline 12, and the first outlet flange 19 is connected to the first water outlet pipeline 3;

[0069] A first heating tube 20, wherein a plurality of first heating tubes 20 are disposed in the first heating cylinder 17, and a first fixing flange is disposed between the first heating tube 20 and the first heating cylinder 17;

[0070] A first temperature measuring element 21, which is disposed inside the first heating cylinder 17;

[0071] A second temperature measuring element 22, which is disposed in the first outlet flange 19;

[0072] The first junction box 23 is connected to the first heating tube 20 .

[0073] In this technical solution, the first shell provided outside the first heating cylinder 17 plays a role of protection and heat insulation. The first shell is usually made of a material with good thermal insulation performance, such as a composite structure of thermal insulation materials such as rock wool and a metal shell, which can effectively reduce the loss of heat to the surrounding environment and improve energy efficiency. The first inlet flange 18 and the first outlet flange 19 on the first heating cylinder 17 are connected to the first connecting pipeline 12 and the first water outlet pipeline 3 respectively.

[0074] A plurality of first heating tubes 20 are arranged in the first heating cylinder 17, which increases the heating area and can heat the water more quickly and evenly. The first fixing flange arranged between the first heating tube 20 and the first heating cylinder 17 not only fixes the first heating tube 20, but also ensures the sealing of the first heating cylinder 17 to prevent leakage of internal water.

[0075] The first temperature measuring element 21 is arranged inside the first heating cylinder 17, and it can monitor the temperature of the water in the first heating cylinder 17 in real time during the heating process. The temperature distribution of the water in the first heating cylinder 17 can be accurately understood through the temperature data fed back by the first temperature measuring element 21. If the first temperature measuring element 21 detects that the local temperature is too high or too low, it may mean that there is a fault in the first heating tube 20 or the water flow is unevenly distributed. At this time, corresponding measures can be taken in time to make adjustments.

[0076] The second temperature measuring element 22 is disposed in the first outlet flange 19, and can accurately measure when the hot water is about to flow out of the first heater body 11, avoiding the influence of factors such as pipe heat dissipation on the measurement result. The measurement data of the second temperature measuring element 22 can be combined with the data of the first temperature measuring element 21 to further improve the monitoring of the heating process of the first heater body 11.

[0077] The first junction box 23 is connected to the first heating tube 20. The first junction box 23 can ensure a stable power supply and has good insulation performance and protection level to prevent safety accidents such as leakage. At the same time, the structural design of the first junction box 23 is convenient for maintenance and inspection. When the first heating tube 20 fails and the circuit needs to be checked, the maintenance personnel can easily open the first junction box 23 for operation.

[0078] The second heating system 4 comprises:

[0079] A second pump body 24, wherein a water inlet of the second pump body 24 is connected to a second water inlet pipeline 5;

[0080] The second heater body 25 , a second connecting pipeline 26 is arranged between the water inlet of the second heater body 25 and the water outlet of the second pump body 24 , and the water outlet of the second heater body 25 is connected to the second water outlet pipeline 6 .

[0081] In this technical solution, the water inlet of the second pump body 24 is connected to the second water inlet pipeline 5, ensuring that the water source can stably flow into the second pump body 24. During operation, the second pump body 24 generates sufficient centrifugal force through the high-speed rotation of the internal impeller, so that the water obtains energy and stably flows to the subsequent second connecting pipeline 26. The second heater body 25 is the core component for realizing the heating function. It is connected to the second pump body 24 through the second connecting pipeline 26 to ensure that the water flow can be fed into the second heater body 25. The second heater body 25 is used to heat the water and smoothly transport the heated hot water through the second water outlet pipeline 6, providing continuous and reliable heat for the tunnel fire protection pipeline in a cold environment, ensuring the normal operation of the fire protection system.

[0082] The second connecting pipeline 26 is provided with a second water inlet flowmeter 27 , the second water inlet pipeline 5 is provided with a second water inlet control valve 28 , and the second water outlet pipeline 6 is provided with a second water outlet flowmeter 29 and a second water outlet control valve 30 .

[0083] In this technical solution, in this technical solution, the second water inlet flowmeter 27 provided on the second connecting pipeline 26 can accurately measure the water flow entering the second heater body 25 in real time. By monitoring the flow data, the amount of water entering the second heater body 25 can be accurately grasped, which is crucial for evaluating the working state of the second heater body 25. For example, when the flow data deviates from the preset value, it may mean that the working efficiency of the second pump body 24 changes, the second connecting pipeline 26 is blocked, or other abnormal conditions occur. At the same time, these flow data can be fed back to the controller 9, so that the controller 9 can adjust the heating power of the second heater body 25 according to the actual flow, ensure that the water is heated to a suitable temperature, and ensure the stability and efficiency of the heating.

[0084] The second water inlet control valve 28 on the second water inlet pipeline 5 is a key component for actively controlling the water inlet flow rate. It can adjust the opening according to the system requirements and the data fed back by the second water inlet flow meter 27. During normal operation, if the second water inlet flow meter 27 detects an abnormal change in flow rate, the second water inlet control valve 28 can adjust the opening accordingly to restore the normal flow rate. In addition, when the second heating system 4 needs to be maintained or overhauled, the second water inlet control valve 28 can be completely closed to cut off the water flow, which is convenient for operators to operate and prevents water leakage from causing damage to the equipment and the surrounding environment.

[0085] The second water outlet flowmeter 29 on the second water outlet pipeline 6 is also used for flow monitoring. It measures the flow of hot water flowing out of the second heater body 25, and combined with the data of the second water inlet flowmeter 27, the heating efficiency of the second heater body 25 and the loss of water during the heating process can be calculated. If the data of the second water outlet flowmeter 29 and the data of the second water inlet flowmeter 27 show unreasonable differences, such as a significant reduction in flow and not due to normal thermal expansion and contraction, this may indicate that there is scale accumulation, pipeline rupture or other faults inside the second heater body 25.

[0086] The second heater body 25 comprises:

[0087] A second heating cylinder 31, a second shell is disposed outside the second heating cylinder 31, a second inlet flange 32 and a second outlet flange 33 are disposed on the second heating cylinder 31, the second inlet flange 32 is connected to the second connecting pipeline 26, and the second outlet flange 33 is connected to the second water outlet pipeline 6;

[0088] Second heating tubes 34, multiple second heating tubes 34 are arranged in the second heating cylinder 31, and a second fixing flange is arranged between the second heating tubes 34 and the second heating cylinder 31;

[0089] A third temperature measuring element 35, which is disposed inside the second heating cylinder 31;

[0090] A fourth temperature measuring element 36, which is disposed in the second outlet flange 33;

[0091] The second junction box 37 is connected to the second heating tube 34 .

[0092] In this technical solution, the second shell provided outside the second heating cylinder 31 plays a role of protection and heat insulation. The second shell is usually made of a material with good thermal insulation performance, such as a composite structure of thermal insulation materials such as rock wool and a metal shell, which can effectively reduce the loss of heat to the surrounding environment and improve energy efficiency. The second inlet flange 32 and the second outlet flange 33 on the second heating cylinder 31 are respectively connected to the second connecting pipeline 26 and the second water outlet pipeline 6.

[0093] A plurality of second heating tubes 34 are arranged in the second heating cylinder 31, which increases the heating area and can heat the water more quickly and evenly. The second fixing flange arranged between the second heating tube 34 and the second heating cylinder 31 not only fixes the second heating tube 34, but also ensures the sealing of the second heating cylinder 31 to prevent leakage of internal water.

[0094] The third temperature measuring element 35 is arranged inside the second heating cylinder 31, and it can monitor the temperature of the water in the second heating cylinder 31 in real time during the heating process. The temperature data fed back by the third temperature measuring element 35 can accurately understand the temperature distribution of the water in the second heating cylinder 31. If the third temperature measuring element 35 detects that the local temperature is too high or too low, it may mean that there is a problem with the second heating tube 34 or the water flow is unevenly distributed. At this time, corresponding measures can be taken in time to make adjustments.

[0095] The fourth temperature measuring element 36 is disposed in the second outlet flange 33, and can accurately measure when the hot water is about to flow out of the second heater body 25, avoiding the influence of factors such as pipe heat dissipation on the measurement result. The measurement data of the fourth temperature measuring element 36 can be combined with the data of the third temperature measuring element 35 to further improve the monitoring of the heating process of the second heater body 25.

[0096] The second junction box 37 is connected to the second heating tube 34. The second junction box 37 can ensure a stable power supply and has good insulation performance and protection level to prevent safety accidents such as leakage. At the same time, the structural design of the second junction box 37 is convenient for maintenance and inspection. When the second heating tube 34 fails and the circuit needs to be checked, the maintenance personnel can easily open the second junction box 37 for operation.

[0097] The controller 9 is electrically connected to the first water inlet control valve 14, the second water inlet control valve 28, the first water outlet control valve 16, the second water outlet control valve 30, the first temperature measuring element 21, the second temperature measuring element 22, the third temperature measuring element 35, the fourth temperature measuring element 36, the first water inlet flowmeter 13, the second water inlet flowmeter 27, the first water outlet flowmeter 15 and the second water outlet flowmeter 29.

[0098] In this technical solution, the control can accurately regulate the amount of water entering the first heating system 1 and the second heating system 4 from the water inlet main line 7 by connecting with the first water inlet control valve 14 and the second water inlet control valve 28. The connection with the first water outlet control valve 16 and the second water outlet control valve 30 enables the controller 9 to control the flow and pressure of hot water flowing out of the first heating system 1 and the second heating system 4. Combined with the information fed back by the first water outlet flow meter 15 and the second water outlet flow meter 29, the controller 9 can adjust the opening of the water outlet control valve according to the actual heating demand of the fire-fighting pipeline. When the fire-fighting pipeline needs to heat up quickly or increase the heat supply, the controller 9 can increase the opening of the water outlet control valve to ensure sufficient hot water supply. Conversely, when the heat demand of the fire-fighting pipeline decreases, the controller 9 can appropriately close the water outlet control valve to maintain the thermal balance of the system while reducing unnecessary energy consumption.

[0099] The connection between the first temperature measuring element 21, the second temperature measuring element 22, the third temperature measuring element 35 and the fourth temperature measuring element 36 and the controller 9 enables the controller 9 to obtain the temperature data fed back by these temperature measuring elements, which reflect the water temperature conditions at different positions. The data of the first temperature measuring element 21 and the second temperature measuring element 22 in the first heating cylinder 17 can help the controller 9 understand the heating state of the water in the first heating system 1 and determine whether there is a problem of local overheating or insufficient heating. Similarly, the third temperature measuring element 35 and the fourth temperature measuring element 36 also have the same monitoring function for the second heating system 4. Based on these temperature information, the controller 9 can dynamically adjust the heating power of the first heating tube 20 and the second heating tube 34. For example, if the first temperature measuring element 21 detects that the water temperature is lower than the set value, the controller 9 will increase the power of the first heating tube 20; if the second temperature measuring element 22 detects that the outlet temperature is too high, the controller 9 will appropriately reduce the power to ensure that hot water is supplied to the fire protection pipe at a suitable temperature.

[0100] It also includes a bottom plate 38 , which is disposed at the bottom of the first heating system 1 , the second heating system 4 and the controller 9 .

[0101] In this technical solution, the base plate 38 is used to support the first heating system 1 , the second heating system 4 and the controller 9 .

[0102] The second aspect of the present application embodies a control method for a tunnel fire protection pipeline circulating heating device, using the tunnel fire protection pipeline circulating heating device in any one of the embodiments of the first aspect, including the following steps:

[0103] S1. In the absence of a fire, the controller 9 determines whether the operating condition of the first heating system 1 or the second heating system 4 is abnormal based on the temperature or flow information of the internal fluid of the first heating system 1 or the second heating system 4, and controls the opening or closing of the first heating system 1 or the second heating system 4 based on the determination result;

[0104] In this technical solution, under the condition of no fire, one of the first heating system 1 or the second heating system 4 is turned on. In this embodiment, the first heating system 1 is turned on and the second heating system 4 is turned off as an example. At this time, the first water inlet control valve 14 and the first water outlet control valve 16 are in the open state, and the second water inlet control valve 28 and the second water outlet control valve 30 are in the closed state. The water in the water tank is fed into the first heating system 1 through the main water inlet line 7, the first water inlet line 2 and the first pump body 10. After the first heating system 1 heats the water, it is fed into the fire passage through the first water outlet line 3 and the main water outlet line 8, thereby achieving fire prevention. Heat is transported inside the anti-channel to prevent ice from forming inside the fire channel. During use, the first water inlet flowmeter 13 and the first water outlet flowmeter 15 will transmit the flow information to the controller 9. If the data of the first water outlet flowmeter 15 is unreasonable different from the data of the first water inlet flowmeter 13, such as a significant reduction in flow and not due to normal thermal expansion and contraction, this may indicate that there is scale accumulation, pipe rupture or other faults inside the first heater body 11. At this time, the controller 9 controls the first heating system 1 to be turned off, the second heating system 4 to be turned on, and then the first heating system 1 is inspected. When the first temperature measuring component 21 and the second temperature measuring component 22 transmit the temperature information to the controller 9, the detected temperature information is unreasonable different from the initially set temperature, for example, when the difference is more than 20°C, it may mean that there is a fault in the first heating tube 20. At this time, the first heating system 1 needs to be turned off, the second heating system 4 needs to be turned on, and the first heating system 1 needs to be inspected.

[0105] S2. In case of fire, the controller 9 controls the first heating system 1 or the second heating system 4 to shut down.

[0106] In this technical solution, when a fire occurs, on-site personnel issue instructions manually or through communication signals, the controller 9 shuts down the first heating system 1 and the second heating system 4, and the water in the water tank is discharged through the fire-fighting pipe to perform fire-fighting operations.

[0107] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application. The above are only preferred implementations of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present application, and these improvements and variations should also be regarded as the protection scope of the present application.

Claims

1. A tunnel fire protection pipeline circulation heating equipment, characterized in that: include: A first heating system (1), wherein a first water inlet pipeline (2) and a first water outlet pipeline (3) are respectively arranged on both sides of the first heating system (1); A second heating system (4), wherein a second water inlet pipeline (5) and a second water outlet pipeline (6) are respectively arranged on both sides of the second heating system (4); A main water inlet pipeline (7), wherein the main water inlet pipeline (7) is connected to the first water inlet pipeline (2) and the second water inlet pipeline (5); a main water outlet pipeline (8), the main water outlet pipeline being connected to the first water outlet pipeline (3) and the second water outlet pipeline (6); The first heating system (1) and the second heating system (4) are connected in parallel to the water tank and the fire-fighting pipeline via the water inlet main pipeline (7) and the water outlet main pipeline (8); A controller (9), the controller (9) being connected to the first heating system (1) and the second heating system (4), the controller (9) being used to control the opening or closing of the first heating system (1) or the second heating system (4).

2. The tunnel fire protection pipeline circulation heating equipment according to claim 1 is characterized in that: The first heating system (1) comprises: A first pump body (10), wherein a water inlet of the first pump body (10) is connected to the first water inlet pipeline (2); A first heater body (11), a first connecting pipeline (12) is provided between a water inlet of the first heater body (11) and a water outlet of the first pump body (10), and the water outlet of the first heater body (11) is connected to the first water outlet pipeline (3).

3. The tunnel fire protection pipeline circulation heating equipment according to claim 2 is characterized in that: The first connecting pipeline (12) is provided with a first water inlet flowmeter (13), the first water inlet pipeline (2) is provided with a first water inlet control valve (14), and the first water outlet pipeline (3) is provided with a first water outlet flowmeter (15) and a first water outlet control valve (16).

4. The tunnel fire protection pipeline circulation heating equipment according to claim 3 is characterized in that: The first heater body (11) comprises: A first heating cylinder (17), wherein a first shell is disposed outside the first heating cylinder (17), and a first inlet flange (18) and a first outlet flange (19) are disposed on the first heating cylinder (17), wherein the first inlet flange (18) is connected to the first connecting pipeline (12), and the first outlet flange (19) is connected to the first water outlet pipeline (3); A first heating tube (20), wherein a plurality of the first heating tubes (20) are arranged in the first heating cylinder (17), and a first fixing flange is arranged between the first heating tube (20) and the first heating cylinder (17); A first temperature measuring element (21), the first temperature measuring element (21) being arranged inside the first heating cylinder (17); a second temperature measuring element (22), the second temperature measuring element (22) being arranged in the first outlet flange (19); A first junction box (23), wherein the first junction box (23) is connected to the first heating tube (20).

5. The tunnel fire protection pipeline circulation heating equipment according to claim 4 is characterized in that: The second heating system (4) comprises: A second pump body (24), wherein a water inlet of the second pump body (24) is connected to the second water inlet pipeline (5); A second heater body (25), a second connecting pipeline (26) is provided between the water inlet of the second heater body (25) and the water outlet of the second pump body (24), and the water outlet of the second heater body (25) is connected to the second water outlet pipeline (6).

6. The tunnel fire protection pipeline circulation heating equipment according to claim 5 is characterized in that: The second connecting pipeline (26) is provided with a second water inlet flowmeter (27), the second water inlet pipeline (5) is provided with a second water inlet control valve (28), and the second water outlet pipeline (6) is provided with a second water outlet flowmeter (29) and a second water outlet control valve (30).

7. The tunnel fire protection pipeline circulation heating equipment according to claim 6 is characterized in that: The second heater body (25) comprises: A second heating cylinder (31), wherein a second shell is disposed outside the second heating cylinder (31), and a second inlet flange (32) and a second outlet flange (33) are disposed on the second heating cylinder (31), wherein the second inlet flange (32) is connected to the second connecting pipeline (26), and the second outlet flange (33) is connected to the second water outlet pipeline (6); A second heating tube (34), wherein a plurality of the second heating tubes (34) are arranged in the second heating cylinder (31), and a second fixing flange is arranged between the second heating tube (34) and the second heating cylinder (31); a third temperature measuring component (35), the third temperature measuring component (35) being arranged inside the second heating cylinder (31); a fourth temperature measuring element (36), the fourth temperature measuring element (36) being arranged in the second outlet flange (33); A second junction box (37), wherein the second junction box (37) is connected to the second heating tube (34).

8. The tunnel fire protection pipeline circulation heating equipment according to claim 7 is characterized in that: The controller (9) is electrically connected to the first water inlet control valve (14), the second water inlet control valve (28), the first water outlet control valve (16), the second water outlet control valve (30), the first temperature measuring element (21), the second temperature measuring element (22), the third temperature measuring element (35), the fourth temperature measuring element (36), the first water inlet flow meter (13), the second water inlet flow meter (27), the first water outlet flow meter (15) and the second water outlet flow meter (29).

9. The tunnel fire protection pipeline circulation heating equipment according to claim 8 is characterized in that: It also includes a bottom plate (38), which is arranged at the bottom of the first heating system (1), the second heating system (4) and the controller (9).

10. A method for controlling a circulating heating device for a tunnel fire protection pipeline, characterized in that: The tunnel fire protection pipeline circulation heating equipment as claimed in any one of claims 1 to 9 comprises the following steps: S1. In the absence of a fire, the controller (9) determines whether the operating condition of the first heating system (1) or the second heating system (4) is abnormal based on the acquired temperature or flow rate information of the internal fluid of the first heating system (1) or the second heating system (4), and controls the opening or closing of the first heating system (1) or the second heating system (4) based on the determination result; S2. In the event of a fire, the controller (9) controls the first heating system (1) or the second heating system (4) to shut down.

Images