A construction site temporary fire water return water anti-freezing device

Abstract

This utility model discloses a temporary fire-fighting water return and antifreeze device for construction sites, including a fire-fighting water tank and multiple fire hydrants. The bottom and top of the fire-fighting water tank are connected to an outlet pipe and a return pipe, respectively. The outlet pipe is connected to a water supply network. The multiple fire hydrants are installed on the water supply network, and the fire hydrants are connected to the internal channels of the water supply network. This utility model sets two preset water temperature values ​​and implements two return water circulation modes depending on the situation in low-temperature environments. Mode 1 uses a return water pump to circulate the fire-fighting water, improving its activity. Mode 2, based on the recycling circulation, further incorporates a booster pump, an electric heater, and a stirrer to form a heater structure inside the fire hydrant's internal cavity. This heater participates in the water circulation, providing a heating and ice-melting effect, increasing water pressure, and improving the efficiency of the circulating water flow rate. This solves the problem that fire-fighting water easily freezes in pipes in low-temperature environments, leading to the inability to discharge fire-fighting water and the easy freezing and cracking of pipes.

Description

Technical Field

[0001] This utility model belongs to the field of fire protection technology, specifically relating to a temporary fire water return antifreeze device for construction sites. Background Technology

[0002] Temporary fire-fighting water systems at construction sites are typically stored in fire pools or tanks and transported to various fire hydrants via fire pipelines. This differs from conventional fire-fighting water systems, which are fixed installations that do not require dismantling after installation. Temporary fire-fighting water systems are installed temporarily on-site and usually need to be recycled after construction is completed.

[0003] In low-temperature environments, fire-fighting water easily freezes in pipes, leading to drainage problems and pipe cracking, causing the fire protection system to malfunction. Traditional fire-fighting water antifreeze typically relies on underground installations, heating equipment, or insulation to protect pipes. However, these methods are unsuitable for temporary fire-fighting water systems on construction sites, whose exposed installation structures make them more susceptible to low temperatures. Existing antifreeze structures fail to meet practical needs, and their antifreeze effectiveness requires further improvement.

[0004] Therefore, it is necessary to research and develop a temporary fire-fighting water return and antifreeze device for construction sites. Utility Model Content

[0005] To address the aforementioned problems in fire protection systems, this utility model aims to provide a temporary fire water return antifreeze device for construction sites. This device can automatically adjust the flow rate and velocity of water in the pipes according to outdoor temperature conditions, keeping the fire water flowing and thus reducing the risk of the fire water freezing inside the pipes.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A temporary fire water return antifreeze device for construction sites includes a fire water tank and multiple fire hydrants. The bottom and top of the fire water tank are respectively connected to an outlet pipe and a return pipe. The outlet pipe is connected to a water supply network. Multiple fire hydrants are installed on the water supply network and are connected to the pipe channel of the water supply network. The return pipe is equipped with a return pump at its input end and the input end of the return pump is connected to the output end of the water supply network.

[0008] Each of the fire hydrants is equipped with a booster pump at its connection to the water supply network. An electric heater is installed inside each fire hydrant, and the output end of the booster pump faces the heating tube of the electric heater.

[0009] Preferably, the input end of the fire water tank is connected to a water inlet pipe, and the input end of the water inlet pipe is connected to a water source.

[0010] Preferably, the inner diameter of the water supply pipeline is larger than the inner diameter of the outlet and return pipelines, and the water supply pipeline and outlet pipeline are detachably installed via flanges. The input and output ends of the return pump are detachably installed via flanges to the output end of the water supply pipeline and the input end of the return pipeline, respectively.

[0011] Preferably, the water outlet pipe, water supply network and return pipe are all wrapped with an insulation layer, and the insulation layer is made of rubber and plastic insulation cotton material.

[0012] Preferably, the fire water tank is equipped with a pressure relief valve on top to release excessive pressure inside the fire water tank.

[0013] Preferably, the fire water tank is equipped with a stirrer for stirring the water inside the fire water tank.

[0014] Preferably, the fire water tank is made of copper-aluminum composite heat-absorbing plate welded together, and the outside of the fire water tank is coated with solar heat-absorbing paint.

[0015] Preferably, a support frame is fixedly connected to the bottom of the fire water tank, and the support frame is made of copper.

[0016] Preferably, a wireless temperature sensor is installed on the water supply pipeline to sense the temperature signal within the water supply pipeline. The number of wireless temperature sensors is set to multiple, and the multiple wireless temperature sensors are equidistantly distributed along the distribution trajectory of the water supply pipeline to monitor the water temperature in the pipeline in real time.

[0017] The fire water return antifreeze device also includes a controller. The input and output terminals of the controller are electrically connected to an A / D converter and a D / A converter, respectively. Multiple wireless temperature sensors are electrically connected to the A / D converter. The return water pump, booster pump, electric heater, and agitator are all electrically connected to the D / A converter. The controller's connection terminal is electrically connected to a touch screen display for inputting the set temperature and displaying monitoring data.

[0018] The improvement of this utility model compared to the prior art lies in the following aspects:

[0019] 1. By setting two preset water temperature values, two return water circulation modes can be implemented depending on the situation in low-temperature environments. Mode 1 uses a return water pump to circulate the fire water and improve its activity. Mode 2, based on the recycling circulation, further uses a booster pump, electric heater, and agitator to form a heater structure inside the fire hydrant. Under the action of the booster pump, the heated water can be replaced into the water supply network to participate in circulation, and the speed of the fire water in the circulation pipeline can be accelerated. With the agitator stirring in the fire water tank, homogenization is carried out to make the fire water temperature rise evenly, so as to solve the problem that the fire water is prone to freezing in the pipes in low-temperature environments, which leads to the inability to discharge the fire water and the pipes being prone to freezing and cracking.

[0020] 2. By combining and installing the various components of this application, the structure is simple, easy to install and maintain, and easy to recycle and reuse later. It can be used for temporary fire protection conditions on construction sites. The return water pump, return water pipe, controller and wireless temperature sensor are all common equipment, easy to purchase and replace, reducing the difficulty and cost of operation and maintenance. In addition, the safety and stability of the fire water supply system are significantly improved during use.

[0021] 3. By introducing wireless temperature sensors and controllers, an intelligent control system based on temperature monitoring is formed, realizing intelligent control functions. It can achieve real-time monitoring and automatic adjustment of fire water temperature, thereby improving the automation and intelligence level of the fire protection system. Attached Figure Description

[0022] Figure 1 A schematic diagram of the overall structure of the fire-fighting water return antifreeze device provided by this utility model.

[0023] Figure 2 This is a perspective view of the fire water tank and its connecting structure in this utility model.

[0024] Figure 3 This is a system control flowchart of the intelligent control system used in this utility model.

[0025] In the picture:

[0026] Inlet pipe-1; Fire water tank-2; Outlet pipe-3; Wireless temperature sensor-4; Controller-5; Return water pump-6; Return water pipe-7; Fire hydrant-8; Water supply network-9; Booster pump-10; Electric heater-11; Pressure relief valve-12; Support frame-13; Agitator-14; Touch screen display-15. Detailed Implementation

[0027] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0028] like Figure 1-3 As shown, a temporary fire-fighting water return and antifreeze device for construction sites includes a fire-fighting water tank 2 and multiple fire hydrants 8. The bottom and top of the fire-fighting water tank 2 are connected to an outlet pipe 3 and a return pipe 7, respectively. The outlet pipe 3 is connected to a water supply network 9. Multiple fire hydrants 8 are installed on the water supply network 9, and the fire hydrants 8 are connected to the internal channels of the water supply network 9. The water supply network 9 is arranged along the construction site, and the shortest possible pipe routing is used based on the distribution of the fire hydrants 8 to reduce pipe usage and shorten the water circulation distance. A return pump 6 is installed at the input end of the return pipe 7, and the input end of the return pump 6 is connected to the output end of the water supply network 9. A frequency converter is connected in series in the control circuit of the return pump 6, which can be controlled and adjusted to adjust its operating frequency.

[0029] Each fire hydrant 8 is connected to the water supply network 9 and a booster pump 10 is installed. An electric heater 11 is installed inside the fire hydrant 8, and the output end of the booster pump faces the heating pipe of the electric heater 11. Compared with the traditional fire water antifreeze system, this application is for a temporary fire water system at the construction site. The whole device is easy to install and recycle. Unlike the traditional solution that relies on buried installation, this application achieves the effect of fire water antifreeze by circulating water and activating the water body with water pressure.

[0030] Furthermore, in the above technical solution, the input end of the fire water tank 2 is connected to the water inlet pipe 1, and the input end of the water inlet pipe 1 is connected to the water source, and the external water source is pumped in through a pump control.

[0031] Furthermore, in the above technical solution, the inner diameter of the water supply network 9 is larger than the inner diameter of the outlet pipe 3 and the return pipe 7. The water supply network 9 and the outlet pipe 3 are detachably installed via flanges. The input and output ends of the return pump 6 are detachably installed via flanges to the output end of the water supply network 9 and the input end of the return pipe 7, respectively, which facilitates the rapid assembly, installation and recycling of the device.

[0032] Furthermore, in the above technical solution, the outer sides of the water outlet pipe 3, the water supply network 9, and the return water pipe 7 are all wrapped with an insulation layer, and the insulation layer is made of rubber and plastic insulation cotton material, or other insulation materials are also acceptable. Compared with the existing wrapping insulation material method used for fire water antifreeze, the thickness of the insulation layer in this application is significantly reduced. It can be a thin layer, which can also play a buffering and protective role.

[0033] Furthermore, in the above technical solution, a pressure relief valve 12 is installed on the top of the fire water tank 2 to release excessive pressure in the fire water tank 2, ensure the pressure stability of the fire water tank 2 and the circulation pipeline, and avoid safety hazards caused by excessive pressure.

[0034] Furthermore, in the above technical solution, a stirrer 14 is installed inside the fire water tank 2 to stir the water inside the fire water tank 2. In this embodiment, the stirrer 14 includes a stirring motor and a stirring shaft frame. The stirring motor is fixed to the bottom of the fire water tank 2 through a cover, specifically attached to the outside of the support frame 13, so that the heat generated by its operation can be transferred to the inside of the fire water tank 2. The stirring shaft frame penetrates through the fire water tank 2, and a sealed bearing is installed at its connection to ensure that the fire water does not overflow.

[0035] Furthermore, in the above technical solution, the fire water tank 2 is welded from a copper-aluminum composite heat-absorbing plate, and the outer side of the fire water tank 2 is coated with a solar heat-absorbing coating. Through this structure and material combination, the heat absorption capacity of the fire water tank 2 is improved, thereby increasing the water temperature to a certain extent.

[0036] Furthermore, in the above technical solution, a support frame 13 is fixedly connected to the bottom of the fire water tank 2, and the support frame 13 is made of copper. The support frame 13 has good thermal conductivity and is configured in a multi-channel shape, similar to heat exchange fins. It contacts the heat source on its outer side, which can quickly transfer heat to the inside of the fire water tank 2 and heat the water.

[0037] Furthermore, in the above technical solution, a wireless temperature sensor 4 is installed on the water supply network 9 to sense the temperature signal inside the water supply network 9, and the number of wireless temperature sensors 4 is set to multiple, with multiple wireless temperature sensors 4 being equidistantly distributed along the distribution trajectory of the water supply network 9 to monitor the water temperature inside the pipeline in real time.

[0038] The fire water return antifreeze device also includes a controller 5. The input and output terminals of the controller 5 are electrically connected to an A / D converter and a D / A converter, respectively. Multiple wireless temperature sensors 4 are electrically connected to the A / D converter. The return water pump 6, booster pump 10, electric heater 11 and agitator 14 are all electrically connected to the D / A converter. The connection terminal of the controller 5 is electrically connected to a touch display 15, which is used to input the set temperature and display monitoring data.

[0039] In this utility model, the controller 5 is divided into manual control and wireless data control, and can be set to different working modes according to actual needs, such as timed cycle mode and temperature sensing cycle mode. This embodiment takes the temperature sensing cycle mode as an example.

[0040] When the fire water return antifreeze device provided by this utility model is in use, two sets of preset water temperature values ​​are input through the touch display 15, including a first antifreeze temperature and a second antifreeze temperature, and the first antifreeze temperature is greater than the second antifreeze temperature; when the wireless temperature sensor 4 detects that the water temperature is lower than the preset first antifreeze temperature, the controller 5 will automatically start the return water pump 6 to pump the fire water from the pipeline back to the fire water tank 2 or fire water pool, and then send it back to the fire pipeline of the water supply network 9 through the outlet pipe 3 to form a water circulation, improve its activity, and avoid the condensation phenomenon caused by the water standing at low temperature as much as possible. When the temperature drops again and the wireless temperature sensor 4 detects that the water temperature is below the preset second antifreeze temperature, the controller 5, in addition to starting the return water pump 6, continues to start the booster pump 10, electric heater 11, and agitator 14. By heating the water inside the fire hydrant 8, and since the fire hydrant 8 has a valve at its outlet, opening the valve during use can prevent the fire water from freezing and becoming unable to drain in winter. Under the action of the booster pump 10, the water pressure increases, the water flow becomes more stable, and the efficiency of the circulating water flow rate is improved. When the fire hydrant 8 is not in use, the valve is closed, and the fire hydrant 8 is equivalent to a local heating water storage chamber. Thus, a heater structure is formed inside the fire hydrant 8. Under the action of the booster pump 10, the heated water can be replaced into the water supply network 9 to participate in circulation, and the speed of the fire water in the circulation pipeline can be accelerated. Together with the agitator 14, the fire water in the fire water tank 2 is stirred and homogenized, so that the temperature of the fire water is raised evenly, in order to solve the problem that the fire water is prone to freezing in the pipes in low-temperature environments, which leads to the inability to drain the fire water and the pipes being prone to freezing and cracking.

[0041] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not describe all details exhaustively, nor do they limit the specific implementation of the utility model. Clearly, many modifications and variations can be made based on the content of this specification. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A temporary fire water return antifreeze device for construction sites, comprising a fire water tank (2) and multiple fire hydrants (8), wherein the bottom and top of the fire water tank (2) are respectively connected to an outlet pipe (3) and a return pipe (7), and the outlet pipe (3) is connected to a water supply network (9) at its output end; multiple fire hydrants (8) are installed on the water supply network (9), and the fire hydrants (8) are connected to the pipe channel of the water supply network (9), characterized in that: The return water pipe (7) is equipped with a return water pump (6) at its input end, and the input end of the return water pump (6) is connected to the output end of the water supply network (9). Each of the fire hydrants (8) is connected to the water supply network (9) and a booster pump (10) is installed. An electric heater (11) is installed inside the fire hydrant (8), and the output end of the booster pump faces the heating tube of the electric heater (11).

2. The temporary fire-fighting water return antifreeze device at a construction site according to claim 1, characterized in that: The input end of the fire water tank (2) is connected to the water inlet pipe (1), and the input end of the water inlet pipe (1) is connected to the water source.

3. The temporary fire-fighting water return antifreeze device at a construction site according to claim 1, characterized in that: The inner diameter of the water supply network (9) is larger than the inner diameter of the outlet pipe (3) and the return pipe (7). The water supply network (9) and the outlet pipe (3) are detachably installed through flanges. The input end and output end of the return pump (6) are detachably installed through flanges to the output end of the water supply network (9) and the input end of the return pipe (7) respectively.

4. The temporary fire-fighting water return antifreeze device at a construction site according to claim 1, characterized in that: The water outlet pipe (3), water supply network (9) and return water pipe (7) are all wrapped with an insulation layer, and the insulation layer is made of rubber and plastic insulation cotton material.

5. A temporary fire-fighting water return antifreeze device for construction sites according to claim 1, characterized in that: The fire water tank (2) is equipped with a pressure relief valve (12) on top, which is used to release excessive pressure inside the fire water tank (2).

6. A temporary fire-fighting water return antifreeze device for construction sites according to claim 1, characterized in that: The fire water tank (2) is equipped with a stirrer (14) for stirring the water inside the fire water tank (2).

7. A temporary fire-fighting water return antifreeze device for construction sites according to claim 1, characterized in that: The fire water tank (2) is made of copper-aluminum composite heat-absorbing plate welded together, and the outside of the fire water tank (2) is coated with solar heat-absorbing paint.

8. A temporary fire-fighting water return antifreeze device for construction sites according to claim 1, characterized in that: The bottom of the fire water tank (2) is fixedly connected to a support frame (13), and the support frame (13) is made of copper.

9. A temporary fire-fighting water return antifreeze device for construction sites according to claim 1, characterized in that: The water supply network (9) is equipped with a wireless temperature sensor (4) for sensing the temperature signal inside the water supply network (9). The number of wireless temperature sensors (4) is set to multiple. The multiple wireless temperature sensors (4) are distributed at equal intervals along the distribution trajectory of the water supply network (9) to monitor the water temperature in the pipeline in real time.

10. A temporary fire-fighting water return antifreeze device for construction sites according to claim 9, characterized in that: It also includes a controller (5), the input and output terminals of which are electrically connected to an A / D converter and a D / A converter, respectively, and multiple wireless temperature sensors (4) are electrically connected to the A / D converter. The return water pump (6), booster pump (10), electric heater (11) and stirrer (14) are all electrically connected to the D / A converter. The connection terminal of the controller (5) is electrically connected to a touch display (15) for inputting the set temperature and displaying monitoring data.

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