Outdoor anti-freezing fire hydrant and anti-freezing principle thereof
By setting up an intelligent controller in an outdoor fire hydrant, using heaters and flow field generators to prevent water pipes from freezing, the problem of fire hydrants being unable to be used under low temperature conditions is solved, and the normal water supply and fire extinguishing function is achieved under low temperature conditions.
Patent Information
- Application Number
- CN202411338629.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2025-02-25
AI Technical Summary
Outdoor fire hydrants may not be used normally due to the frozen water pipes under low temperature conditions, resulting in the inability to extinguish the fire in time when a fire occurs, resulting in property safety losses.
An outdoor anti-freeze-type fire hydrant is designed and equipped with an intelligent controller, which includes a power supply module, a temperature detection module, a control module, a heating module, a flow field generation module and a status display module, and prevents the water pipe from freezing through a heater and a flow field generator.
Effectively prevent the fire hydrant from being unable to use due to freezing, ensure that water can be supplied normally under low temperature conditions, and improve fire response capabilities.
Smart Images
Figure CN119507522A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of fire hydrants, and in particular relates to an outdoor antifreeze fire hydrant and an antifreeze principle thereof. Background Art
[0002] Fire hydrants, also known as fire hydrants, are fixed fire-fighting facilities that are mainly used to supply water to control combustibles, isolate combustion-supporting materials, eliminate ignition sources, and thus inhibit the spread of fire. Fire hydrants are divided into indoor fire hydrants and outdoor fire hydrants. Outdoor fire hydrants are equipment that supplies water to firefighters for firefighting operations. They are usually water supply facilities installed on the outdoor environment fire water supply network to provide water for firefighting when a fire occurs and help firefighters to extinguish fires. It is an important part of the firefighting system. When in use, water is taken from the municipal water supply network or the outdoor fire water supply network to the fire truck for firefighting, or it can be directly connected to the water hose and the gun head to discharge water for firefighting. Due to low temperature weather, water may freeze in the fire hydrant pipe, which will stop the water flow in the fire hydrant from flowing, resulting in the fire hydrant being unable to be used normally. As a result, it is easy to miss the best time to extinguish a fire in a critical moment, causing losses to the property safety of the general public. Summary of the invention
[0003] The purpose of the present invention is to provide an outdoor antifreeze fire hydrant, which can heat the water temperature and accelerate the flow of water through intelligent control of heating and flow field devices, thereby preventing the fire hydrant from freezing and facilitating the use of the fire hydrant.
[0004] In order to achieve the above technical effects, the technical solutions adopted by the present invention are as follows: An outdoor antifreeze type fire hydrant, comprising: The main body has a starter rod and a plug cap at the top, a hose interface at the top, and a drain valve at the bottom. The valve stem is arranged in the body, the upper end of the valve stem is connected to the starter rod, and the lower end is connected to the valve disc; and also includes An elbow, which is arranged at the lower part of the body; The water pipeline is provided with an interface pipeline device between the water pipeline and the elbow, and an intelligent controller is provided in the interface pipeline device.
[0005] Preferably, the intelligent controller includes a power module, a temperature detection module, a control module, a heating module, a flow field generation module and a status display module; A power module, including a transformer, wherein an input end of the transformer is connected to a municipal power supply through a power line, a transformer controls a low voltage output to a temperature detection module and a control module, and a working high voltage output of the transformer is output to a heater and a flow field generator; A control module, including a controller, which controls the low voltage output to the status display module; The temperature detection module includes a temperature detection controller and a temperature detector. The temperature detector detects the temperature of the fluid in the pipeline and feeds back the detected temperature to the temperature detection controller. The temperature detection controller feeds back the weighted average value of the temperature to the controller. A heating module includes a heater, and the heater receives instructions from a controller; The flow field generating module includes a flow field generator, and the controller sends a flow field generator instruction to the flow field generator; The heater heats the fluid in the pipeline, and the flow field generator generates a flow field in the pipeline; The status display module includes a working status display, a temperature alarm, a flow field generator working light, a heater working light and a power indicator light. The heater working light displays the status of the heater, the flow field generator working light displays the working status of the flow field generator, the temperature alarm works according to the feedback of the temperature detection controller, and the power indicator light displays the working status of the working status display.
[0006] Preferably, a PID processing unit is provided in the controller.
[0007] The antifreeze principle of an outdoor antifreeze fire hydrant is that the transformer of the intelligent controller is connected to the municipal power grid through a power line, and the transformer outputs a control low voltage and a working high voltage, and the low voltage output is controlled to make the temperature detection controller work normally. The temperature detector detects the temperature of each point and feeds it back to the temperature detection controller. The temperature detection controller transmits feedback instructions to the controller, and the controller issues a heating instruction to the heater. The controller issues a working instruction to the flow field generator. The controller outputs a low voltage to control the power supply to control the working status display. The temperature alarm, the flow field generator working light, the heater working light and the power indicator light reflect whether each working module is operating normally. The temperature change after operation will be fed back to each temperature detector, and the temperature detection controller will transmit the feedback instruction to the controller, and this cycle is repeated. Among them, in the PID processing unit of the intelligent controller, after the PID data is input, it is first determined whether the detected temperature exceeds the set upper and lower limit temperatures. If it exceeds the set lower limit temperature, the heater is high-power and the flow field generator works at high power; if it exceeds the set upper limit temperature, the heater is in the off state and the flow field generator works at low power; If the detected temperature is within the set safety temperature range, the PID processing unit determines whether the temperature has the risk of exceeding the set upper and lower limits. If there is a risk of exceeding the set lower limit temperature, the flow field generator and the heater will work at high power; if there is a risk of exceeding the set upper limit temperature, the flow field generator will work at low power and the heater will be in the off state; if there is no risk of the temperature exceeding the set safety temperature range, the flow field generator and the heater will work at low power.
[0008] Compared with the prior art, the present invention has the following beneficial effects: The present invention is the first to set up an intelligent controller, which includes a power module, a temperature detection module, a control module, a heating module, a flow field generation module and a status display module; a PID processing unit is set in the controller, in which the differential control (D) has the highest weight, followed by the proportional control (P) of the real-time detection value of the reaction temperature, and the integral control (I) has the lowest weight. The default weight ratio of the three is 6:2:1, and the user can change the weight value by himself. After the PID data is input, it is first determined whether the detected temperature exceeds the set upper and lower limit temperatures. If the set lower limit temperature is exceeded, the heater is high power and the flow field generator works at high power; if the set upper limit temperature is exceeded, the heater is in a closed state and the flow field generator works at low power, thereby realizing the antifreeze of the outdoor fire hydrant. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.
[0010] In the attached picture: Figure 1 is a main cross-sectional view of a fire hydrant of the present invention; Figure 2 It is a structural schematic diagram of the intelligent controller of the present invention; Figure 3 It is a structural schematic diagram of the inspection well of the present invention; Figure 4 It is a structural schematic diagram of the interface pipeline device of the present invention; Figure 5 is a cross-sectional view of the heater of the present invention; Figure 6 It is a module structure diagram of the intelligent controller of the present invention; Figure 7 is a control logic diagram of the present invention; Figure 8 This is the simulation result of the PID program of the present invention.
[0011] Wherein: 1. Start rod, 2. Bolt cap, 3. Water hose interface, 4. Chain, 5. Valve stem, 6. Body, 7. Inspection well, 701. Pipe port, 8. Drain valve, 9. Valve disc, 10. Valve seat, 11. Elbow, 12. Water pipeline, 13. Interface pipeline device, 14. Intelligent controller installation port, 15. Base, 16. Power indicator light, 17. Temperature detector, 18. Power cord, 19. Intelligent controller, 20. Temperature detection controller, 21. Heater, 211. Metal pipe, 212. Insulator, 213. Heating wire, 214. Thermal conductor, 22. Flow field generator, 23. Working status display, 24. Temperature alarm, 25. Flow field generator working light, 26. Heater working light, 27. Power indicator light. DETAILED DESCRIPTION
[0012] The following is combined with Figure 1-Figure 8 The preferred embodiments of the present invention are described. 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.
[0013] Embodiment 1: An outdoor antifreeze type fire hydrant, comprising: The main body 6 has a starter rod 1 and a plug cap 2 at the top, a hose interface 3 at the top, and the hose interface 3 is connected to a fire hose to achieve water spraying and fire extinguishing. A drain valve 8 is provided at the bottom of the main body 6; The valve stem 5 is arranged in the body 6, the upper end of which is connected to the starter rod 1, and the lower end is connected to the valve disc 9; the valve disc 9 is connected to the valve seat 10; When opening a fire hydrant, first open the nut 2, then use a specific tool to open the starter rod 1, thereby driving the valve stem 5 to open the valve flap 9 and the valve seat 10, so that water enters the body 6 from the underground pipeline and sprays out from the hose interface 3. Among them, the hose interface 3 is connected to the body 6 through a chain 4; after extinguishing the fire, close the starter rod 1, open the drain valve 8, drain the remaining water, and finally tighten the nut 2.
[0014] Also includes: The bent pipe 11 is arranged at the lower part of the main body 6 by bolts; a base 15 is fixedly welded to the bottom of the bent pipe 11 to play a supporting role.
[0015] A water pipe 12, an interface pipe device 13 is provided between the water pipe 12 and the elbow 11 through a flange and bolts; In order to facilitate maintenance, a maintenance well 7 is buried underground, and two pipe openings 701 are opened on the side wall of the maintenance well 7. The ends of the elbow 11 and the water pipeline 12 pass through the pipe openings 701 and are located in the maintenance well 7, and then the interface pipeline device 13 is installed in the maintenance well 7. The interface pipeline device 13 is provided with an intelligent controller 19. An intelligent controller installation opening 14 is integrally formed on the interface pipeline device 13, and a flange ring is integrally formed at the lower end of the intelligent controller 19. The lower end of the intelligent controller 19 and the intelligent controller installation opening 14 are connected by bolts.
[0016] The intelligent controller 19 includes a power module, a temperature detection module, a control module, a heating module, a flow field generation module and a status display module; A power module, including a transformer, the input end of the transformer is connected to the municipal power supply through a power line 18, the transformer controls the low voltage output to the temperature detection module and the control module, and the transformer works The high voltage output is output to the heater and the flow field generator; A control module, including a controller, which controls the low voltage output to the status display module; The temperature detection module includes a temperature detection controller 20 and a temperature detector. The temperature detector detects the temperature of the fluid in the pipeline and feeds back the detected temperature to the temperature detection controller 20. The temperature detection controller 20 feeds back the weighted average value of the temperature to the controller. The heating module includes a heater 21, and the heater 21 receives instructions from the controller; The heater 21 includes a metal tube 211 , an insulating tube body 212 made of plastic is disposed on the inner wall of the metal tube 211 , a heating wire 213 is disposed inside the insulating tube body 212 , and a gap between the heating wire 213 and the insulating tube body 212 is filled with a thermal conductor 214 .
[0017] The flow field generating module includes a flow field generator 22, and the controller sends a flow field generator instruction to the flow field generator 22; The heater 21 heats the fluid in the pipeline, and the flow field generator 22 generates a flow field in the pipeline; The status display module includes a working status display 23, a temperature alarm 24, a flow field generator working light 25, a heater working light 26 and a power indicator light 27. The heater working light 26 displays the status of the heater 21, the flow field generator working light 25 displays the working status of the flow field generator 22, the temperature alarm 24 works according to the feedback of the temperature detection controller 20, and the power indicator light 27 displays the working status of the working status display 23.
[0018] A PID processing unit is provided in the controller.
[0019] Embodiment 2: The antifreeze principle of an outdoor antifreeze fire hydrant is that the transformer of the intelligent controller 19 is connected to the municipal power grid through the power line 18, and the transformer outputs the control low voltage and the working high voltage, and the low voltage output is controlled to make the temperature detection controller 20 work normally, and the temperature detector detects the temperature of each point and feeds it back to the temperature detection controller 20, and the temperature detection controller 20 transmits the feedback instruction to the controller, and the controller issues a heating instruction to the heater 21, and the controller issues a working instruction to the flow field generator 22, and the controller outputs a low voltage to control the power supply to control the working status display, the temperature alarm 24, the flow field generator working light 25, the heater working light 26 and the power indicator light 27 reflect whether each working module is operating normally, and the temperature change after operation will be fed back to each temperature detector, and the temperature detection controller 20 will transmit the feedback instruction to the controller, and this cycle is repeated; Among them, in the PID processing unit of the intelligent controller 19, after the PID data is input, it is first determined whether the detected temperature exceeds the set upper and lower limit temperatures. If it exceeds the set lower limit temperature, the heater 21 is high power and the flow field generator 22 works at high power; if it exceeds the set upper limit temperature, the heater 21 is in a closed state and the flow field generator 22 works at low power; If the detected temperature is within the set safety temperature range, the PID processing unit determines whether the temperature has the risk of exceeding the set upper and lower limits. If there is a risk of exceeding the set lower limit temperature, the flow field generator 22 operates at high power and the heater 21 operates at high power; if there is a risk of exceeding the set upper limit temperature, the flow field generator 22 operates at low power and the heater 21 is in the off state; if there is no risk of the temperature exceeding the set safety temperature range, the flow field generator 22 and the heater 21 operate at low power.
[0020] The PID processing unit used in the present invention provides a power parameter for the intelligent controller through the real-time detection value of the temperature detector, the historical record of the detection data and its change trend. The intelligent controller will determine the output power of the heating module based on the parameter. Since the water temperature change trend is the most important for determining the heater power, in the PID processing unit, the differential control (D) has the highest weight, followed by the proportional control (P) that reflects the real-time detection value of the temperature, and the integral control (I) has the lowest weight. The default weight ratio of the three is 6:2:1, but the user can change the weight value by himself. For example, in areas where the temperature changes drastically, the differential control weight value can be appropriately increased and the integral control weight value can be reduced. In differential control, the temperature change rate is calculated by the temperature change value within a fixed time. The user can set the rate calculation window according to the needs. The more drastic the temperature change, the smaller the temperature change rate calculation window should be. In proportional control, the real-time temperature detection value will be directly uploaded to the controller for calculating the output power of the heating module. In integral control, users can adjust the interval for the controller to collect historical temperature data. The default historical temperature data collection time is 50 seconds. The average temperature of the historical temperature data collection window will be uploaded to the controller for calculating the output power of the heating module. Users in areas with relatively stable temperatures can appropriately increase the historical temperature data collection window.
[0021] After simulation of the PID processing unit, it is proved that the PID processing unit embodiment is reliable. Figure 8 shown.
[0022] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.
Claims
1. An outdoor antifreeze fire hydrant, comprising: The main body (6) is provided with a starter rod (1) and a plug cap (2) at the top, a hose interface (3) at the top, and a drain valve (8) at the bottom. A valve stem (5), the valve stem (5) being arranged in the body (6), the upper end of the valve stem (5) being connected to the starter rod (1), and the lower end of the valve stem (5) being connected to the valve flap (9); It is characterized by: it also includes A curved pipe (11), the curved pipe (11) being arranged at the lower part of the main body (6); A water pipeline (12) is provided between the water pipeline (12) and the elbow (11), and an interface pipeline device (13) is provided inside the interface pipeline device (13). An intelligent controller (19) is provided inside the interface pipeline device (13).
2. An outdoor antifreeze fire hydrant according to claim 1, characterized in that: The intelligent controller (19) comprises a power module, a temperature detection module, a control module, a heating module, a flow field generation module and a status display module; A power module, comprising a transformer, wherein the transformer input end is connected to the municipal power supply via a power line (18), the transformer controls the low voltage output to the temperature detection module and the control module, and the transformer operates the high voltage output to the heater and the flow field generator; A control module, including a controller, which controls the low voltage output to the status display module; The temperature detection module comprises a temperature detection controller (20) and a temperature detector, wherein the temperature detector detects the temperature of the fluid in the pipeline and feeds back the detected temperature to the temperature detection controller (20), and the temperature detection controller (20) feeds back a weighted average value of the temperature to the controller; The heating module comprises a heater (21), wherein the heater (21) receives instructions from a controller; A flow field generating module, comprising a flow field generator (22), wherein the controller sends a flow field generator instruction to the flow field generator (22); The heater (21) heats the fluid in the pipeline, and the flow field generator (22) generates a flow field in the pipeline; The status display module comprises a working status display (23), a temperature alarm (24), a flow field generator working light (25), a heater working light (26) and a power indicator light (27), wherein the heater working light (26) displays the status of the heater (21), the flow field generator working light (25) displays the working status of the flow field generator (22), the temperature alarm (24) operates according to feedback from the temperature detection controller (20), and the power indicator light (27) displays the working status of the working status display (23).
3. An outdoor antifreeze fire hydrant according to claim 2, characterized in that: A PID processing unit is provided in the controller. 4.An antifreeze principle of an outdoor antifreeze fire hydrant, characterized by: The transformer of the intelligent controller (19) is connected to the municipal power grid through a power line (18), and the transformer outputs a control low voltage and a working high voltage. The control low voltage output enables the temperature detection controller (20) to work normally. The temperature detector detects the temperature of each point and feeds it back to the temperature detection controller (20). The temperature detection controller (20) transmits the feedback instruction to the controller. The controller issues a heating instruction to the heater (21). The controller issues a working instruction to the flow field generator (22). The controller outputs a low voltage to control the power supply to control the working status display. The temperature alarm (24), the flow field generator working light (25), the heater working light (26) and the power indicator light (27) reflect whether each working module is operating normally. The temperature change after operation will be fed back to each temperature detector. The temperature detection controller (20) will transmit the feedback instruction to the controller, and this cycle is repeated. Wherein, in the PID processing unit of the intelligent controller (19), after the PID data is input, it is first determined whether the detected temperature exceeds the set upper and lower temperature limits. If the set lower temperature limit is exceeded, the heater (21) is operated at high power and the flow field generator (22) is operated at high power; if the set upper temperature limit is exceeded, the heater (21) is in an off state and the flow field generator (22) is operated at low power; If the detected temperature is within the set safety temperature range, the PID processing unit determines whether the temperature has a risk of exceeding the set upper and lower limits. If there is a risk of exceeding the set lower limit temperature, the flow field generator (22) operates at high power and the heater (21) operates at high power; if there is a risk of exceeding the set upper limit temperature, the flow field generator (22) operates at low power and the heater (21) is in an off state; if there is no risk of exceeding the set safety temperature range, the flow field generator (22) and the heater (21) operate at low power.