Tunnel hot water defrosting device

Abstract

The utility model discloses a tunnel hot water defrosting device which comprises a water storage mechanism additionally arranged outside a tunnel and a collecting mechanism arranged below an air cooler, a liquid supplementing mechanism used for supplementing water and a defrosting mechanism used for defrosting are arranged on the collecting mechanism, and a backflow mechanism used for achieving circulating defrosting is arranged between the collecting mechanism and the liquid supplementing mechanism. Through cooperative use of the water storage mechanism, the liquid supplementing mechanism, the defrosting mechanism, the collecting mechanism and the backflow mechanism, a tray, a chain and a guide rail of a tunnel can be defrosted, automatic defrosting is achieved, the automation degree of tunnel defrosting is improved, workers do not need to climb the tunnel and follow-up manual defrosting is not needed, the manual labor intensity and potential safety hazards are reduced, and the working efficiency is improved. And the evaporator in the air cooler can be circularly defrosted, so that the waste of water resources is reduced, and the effects of saving energy and reducing consumption are achieved.

Description

Technical Field

[0001] This utility model relates to the field of tunnel technology, and in particular to a tunnel hot water defrosting device. Background Technology

[0002] Tunnels are engineering structures buried underground, representing a form of human utilization of underground space. Tunnels can be categorized into traffic tunnels, hydraulic tunnels, municipal tunnels, mining tunnels, and military tunnels.

[0003] Currently, tunnel defrosting requires manual labor. The defrosting water valves are all installed at the top of the tunnel, and opening and closing them requires employees to climb up to the tunnel, which is not only labor-intensive but also poses safety risks. Secondly, the frost on the tunnel's internal frame and pallets is difficult to completely melt, requiring employees to wear raincoats and enter the tunnel to use water hoses to defrost the pallets and chains. This process is cumbersome and detrimental to the physical and mental health of the employees. Furthermore, to create a comfortable working environment for the workers, prevent heatstroke, and reduce the temperature of mechanical equipment and the frequency of equipment failures, air coolers are often used to lower the temperature inside the tunnel. However, after a period of use, the air coolers need to be defrosted and drained. The evaporator of the defrosting air cooler requires a large amount of water, which cannot be recycled and is directly discharged, resulting in resource waste.

[0004] To address this, a tunnel hot water defrosting device is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a tunnel hot water defrosting device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0007] A tunnel hot water defrosting device, comprising:

[0008] A water storage mechanism is added outside the tunnel and a collection mechanism is set below the air cooler. The collection mechanism is equipped with a liquid replenishment mechanism for replenishing water and a defrosting mechanism for defrosting. A return mechanism for realizing circulating defrosting is provided between the collection mechanism and the liquid replenishment mechanism.

[0009] The water storage mechanism includes a water tank, a heating tube installed in the inner cavity of the water tank, a temperature sensor at the bottom of the inner cavity of the water tank, a high liquid level sensor and a low liquid level sensor respectively installed on the upper and lower parts of one side of the inner cavity of the water tank, a liquid replenishment mechanism connected to the water inlet of the water tank, and a defrosting mechanism connected to the water outlet of the water tank.

[0010] As a preferred technical solution, the inner wall of the water tank is fixedly connected to an insulated inner liner, and the temperature sensor, high liquid level sensor and low liquid level sensor are respectively installed on the corresponding positions of the inner wall of the insulated inner liner.

[0011] As a preferred technical solution, the top of the heat-insulating inner liner is connected to a vent pipe, the top end of the vent pipe extends to the top of the water tank, a pressure relief valve is installed on the vent pipe, and a pressure sensor is installed on the top of the inner wall of the heat-insulating inner liner.

[0012] As a preferred technical solution, the liquid replenishment mechanism includes a water pump A, with a conduit A connecting the outlet of the water pump A to the inlet of the heat-insulating inner liner, and a conduit B connecting the inlet of the water pump A.

[0013] As a preferred technical solution, the defrosting mechanism includes a water pump B, with a conduit C connecting the inlet of the water pump B to the outlet of the insulated inner tank, and a conduit D connecting the outlet of the water pump B. The end of the conduit D away from the water pump B is connected to a branch pipe A and a branch pipe B via a T-junction. At least three branch pipes are connected to the branch pipe A, and the branch pipe B is connected to the flushing pipe of the air cooler.

[0014] As a preferred technical solution, the collection mechanism includes a liquid collection tank installed at the bottom of the air cooler, and a drain pipe is connected between the liquid collection tank and the drain outlet of the air cooler.

[0015] As a preferred technical solution, the reflux mechanism includes a reflux pipe, one end of which is connected to the outlet of the liquid collection tank, and the other end of which is connected to the conduit B through a three-way pipe. A filter element is installed on the reflux pipe.

[0016] As a preferred technical solution, the filter element includes a filter box connected to the return pipe, the inner cavity of the filter box is provided with a plurality of filter screens arranged in parallel, the top of the filter box is detachably connected with an inspection cover, and a sealing gasket is embedded between the inspection cover and the filter box.

[0017] As a preferred technical solution, both sides of the filter screen are fixedly connected with protruding strips, and the inner wall of the filter box is provided with a groove that matches the protruding strips. The inner wall of the groove is slidably connected to the surface of the corresponding protruding strip.

[0018] As a preferred technical solution, electrically controlled valves are installed on the conduit B, the branch pipe B, the sewage pipe, and the return pipe, and the electrically controlled valve on the conduit B is located between its inlet and the tee pipe.

[0019] This utility model has at least the following beneficial effects:

[0020] This application, through the coordinated use of a water storage mechanism, a liquid replenishment mechanism, a defrosting mechanism, a collection mechanism, and a return mechanism, can perform defrosting operations on the trays, chains, and guide rails of the tunnel, achieving automatic defrosting and improving the automation level of tunnel defrosting. It eliminates the need for employees to climb the tunnel and perform subsequent manual defrosting, reducing labor intensity and safety hazards. It can also perform circulating defrosting operations on the evaporator in the air cooler, reducing water waste and achieving energy saving and consumption reduction effects. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the tunnel hot water defrosting device of this utility model;

[0022] Figure 2 This is a schematic cross-sectional view of the water storage mechanism of the tunnel hot water defrosting device of this utility model;

[0023] Figure 3 This is an exploded view of the reflux mechanism of the tunnel hot water defrosting device of this utility model;

[0024] Figure 4 This is a schematic diagram of the heating pipe structure of the tunnel hot water defrosting device of this utility model.

[0025] In the diagram: 1. Air cooler; 100. Water storage mechanism; 110. Water tank; 111. Insulated inner liner; 120. Heating element; 130. Temperature sensor; 140. High liquid level sensor; 150. Low liquid level sensor; 160. Vent pipe; 170. Pressure sensor; 200. Liquid replenishment mechanism; 210. Water pump A; 220. Pipe A; 230. Pipe B; 300. Defrosting mechanism; 310. Water pump B; 320, Conduit C; 330, Conduit D; 340, Diverter A; 350, Diverter B; 360, Branch pipe; 400, Collection mechanism; 410, Liquid collection tank; 420, Drain pipe; 500, Return mechanism; 510, Return pipe; 520, Filter element; 521, Filter box; 5211, Groove; 522, Filter screen; 5221, Raised strip; 523, Inspection cover; 524, Sealing ring gasket. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-4This utility model provides a tunnel hot water defrosting device, including a water storage mechanism 100 added outside the tunnel and a collection mechanism 400 located below a cold air blower 1. The collection mechanism 400 is equipped with a liquid replenishment mechanism 200 for replenishing water and a defrosting mechanism 300 for defrosting. A return flow mechanism 500 for realizing cyclic defrosting is provided between the collection mechanism 400 and the liquid replenishment mechanism 200. The water storage mechanism 100 includes a water tank 110. A heating pipe 120 is installed in the inner cavity of the water tank 110. The heating pipe 120 is generally meandering and M-shaped, which helps to increase the heating area and improve the heating efficiency. A temperature sensor 130 is provided at the bottom of the inner cavity of the water tank 110. A high liquid level sensor 140 and a low liquid level sensor 150 are respectively provided on the upper and lower parts of one side of the inner cavity of the water tank 110. The liquid replenishment mechanism 200 is connected to the water inlet of the water tank 110, and the defrosting mechanism 300 is connected to the water outlet of the water tank 110.

[0028] The inner wall of the water tank 110 is fixedly connected to an insulated inner liner 111. Temperature sensor 130, high liquid level sensor 140 and low liquid level sensor 150 are respectively installed at corresponding positions on the inner wall of the insulated inner liner 111. The insulated inner liner 111 can keep the entire interior of the water tank 110 warm, reducing heat loss and allowing the water in the water tank 110 to remain warm even after being heated by the heating pipe 120.

[0029] The top of the insulated inner liner 111 is connected to a vent pipe 160, the top of which extends to the top of the water tank 110. A pressure relief valve is installed on the vent pipe 160. A pressure sensor 170 is installed on the top of the inner wall of the insulated inner liner 111. The pressure sensor 170 can monitor the pressure inside the insulated inner liner 111 in real time. When the pressure inside the insulated inner liner 111 is detected to be too high, the pressure relief valve is opened to release the pressure, thereby effectively preventing the water storage mechanism 100 from deforming or bursting due to pressure.

[0030] The replenishment mechanism 200 includes a water pump A210. A conduit A220 connects the outlet of the water pump A210 to the inlet of the insulated inner liner 111. A conduit B230 connects the inlet of the water pump A210 to an external water source. When the low liquid level sensor 150 detects that the water level in the insulated inner liner 111 has reached the minimum level, the water pump A210 is started to deliver water to the water storage mechanism 100. The water pump A210 is turned off when the vent pipe 160 detects that the water level in the insulated inner liner 111 has reached the maximum level, thus completing the water replenishment operation.

[0031] The defrosting mechanism 300 includes a water pump B310. A conduit C320 connects the inlet of the water pump B310 to the outlet of the insulated inner tank 111. A conduit D330 connects the outlet of the water pump B310. The end of the conduit D330 away from the water pump B310 is connected to a branch pipe A340 and a branch pipe B350 via a T-junction. At least three branch pipes 360 are connected to the branch pipe A340. The branch pipe B350 is connected to the flushing pipe of the air cooler 1. By starting the water pump B310, the hot water in the insulated inner tank 111 can be delivered to the branch pipes A340 and B350 respectively. The hot water can be delivered to the tray, chain and guide rail of the tunnel for defrosting operation through the branch pipes 360. The hot water can be delivered to the evaporator of the air cooler 1 for defrosting operation through the branch pipe B350.

[0032] The collection mechanism 400 includes a liquid collection tank 410 installed at the bottom of the air cooler 1. A drain pipe 420 is connected between the liquid collection tank 410 and the drain outlet of the air cooler 1. The collection mechanism 400 can collect the wastewater generated after the air cooler 1 is defrosted, so that it can be recycled and reused later.

[0033] The reflux mechanism 500 includes a reflux pipe 510. One end of the reflux pipe 510 is connected to the outlet of the collection tank 410, and the other end of the reflux pipe 510 is connected to the conduit B230 through a three-way pipe. A filter element 520 is installed on the reflux pipe 510. The reflux mechanism 500 can reflux and filter the sewage collected by the collection mechanism 400 to achieve the purpose of water resource reuse and achieve the effect of circulating defrosting.

[0034] The filter element 520 includes a filter box 521 connected to the return pipe 510. The inner cavity of the filter box 521 is provided with multiple filter screens 522 arranged in parallel. The top of the filter box 521 is detachably connected to a maintenance cover 523 by screws. A sealing gasket 524 is embedded between the maintenance cover 523 and the filter box 521. The filter element 520 can filter the returned sewage, which not only prevents impurities in the sewage from entering the inner cavity of the water storage mechanism 100 through the replenishment mechanism 200 and affecting the normal use of each component, but also ensures the effect of subsequent defrosting. At the same time, the maintenance cover 523 is detachably connected to the filter box 521, which makes it convenient to remove the maintenance cover 523 from the filter box 521 for regular maintenance or cleaning of the filter screens 522.

[0035] The filter screen 522 has protrusions 5221 fixedly connected to both sides. The inner wall of the filter box 521 has grooves 5211 that are adapted to the protrusions 5221. The inner wall of the groove 5211 is slidably connected to the surface of the corresponding protrusion 5221. Through the cooperation of the protrusions 5221 and the grooves 5211, the filter screen 522 can be quickly inserted into the filter box 521, which facilitates the subsequent removal and placement of the filter screen 522 and improves the maintenance or cleaning efficiency of the filter screen 522.

[0036] Among them, the conduit B230, the branch pipe B350, the branch pipe 360, the sewage pipe 420 and the return pipe 510 are all equipped with electric control valves, and the electric control valve on the conduit B230 is located between its inlet and the tee pipe.

[0037] The system also includes a controller. Heating element 120, temperature sensor 130, high liquid level sensor 140, low liquid level sensor 150, air pressure sensor 170, water pump A210, water pump B310, pressure relief valve, and electrically controlled valve are all electrically connected to the controller. The controller can monitor the actual situation inside the water storage mechanism 100 in real time based on the temperature sensor 130, high liquid level sensor 140, low liquid level sensor 150, and air pressure sensor 170, so as to automatically control the heating element 120, water pump A210, water pump B310, pressure relief valve, and electrically controlled valve as needed. The controller can be a PLC controller of model 6ES72350KD220XA8. Temperature sensor 130 can be a PT1000 temperature sensor. High liquid level sensor 140 and low liquid level sensor 150 can be TWRD33 liquid level sensors. Air pressure sensor 170 can be a DATA-52 series air pressure sensor.

[0038] The working principle of this utility model is as follows: By activating the heating element 120, the water in the insulated inner tank 111 can be heated. The temperature sensor 130 monitors the water temperature in real time. After reaching the desired temperature, the heating element 120 is turned off, and the insulated inner tank 111 maintains the temperature. The pressure sensor 170 monitors the pressure inside the insulated inner tank 111 in real time. When the pressure reaches the threshold, the pressure relief valve is opened, and the pressure is released through the vent pipe 160. The water pump B310 is activated, allowing the hot water in the insulated inner tank 111 to flow sequentially. Hot water is delivered to the branch pipe A340 via conduit C320, pump B310, and conduit D330. Opening the electrically controlled valve on branch pipe 360 ​​allows hot water to be delivered to the tunnel tray, chain, and guide rails for defrosting. Opening the electrically controlled valve on branch pipe B350 allows hot water to be delivered to the evaporator inside the air cooler 1 for defrosting. Opening the electrically controlled valve on drain pipe 420 allows wastewater generated during evaporator defrosting to flow into the collection tank through drain pipe 420. The wastewater is collected in tank 410, then the solenoid valve on return pipe 510 is opened, the solenoid valve on conduit B230 is closed, and water pump A210 is started. The wastewater in collection tank 410 is then returned to the insulation inner liner 111 for recycling through return pipe 510, conduit B230, water pump A210, and conduit A220. Furthermore, when the wastewater passes through filter element 520 on return pipe 510, it is filtered by filter screen 522 to ensure the quality of water entering the insulation inner liner 111. Cleanliness; The liquid level inside the heat-insulating inner tank 111 is monitored in real time by the high liquid level sensor 140 and the low liquid level sensor 150. When the minimum liquid level threshold is reached, the electric control valve on the conduit B230 is opened and the electric control valve on the return pipe 510 is closed, the end of the conduit B230 is connected to the external water source, and the water pump A210 is started, so that water is delivered to the heat-insulating inner tank 111 in sequence through the conduit B230, the water pump A210 and the conduit A220 for replenishment, until the liquid level reaches the maximum threshold.

[0039] All parts not described in this utility model are the same as or can be implemented using existing technology. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tunnel hot water defrosting device, characterized in that, include: A water storage mechanism (100) is added outside the tunnel and a collection mechanism (400) is set below the air cooler (1). The collection mechanism (400) is equipped with a liquid replenishment mechanism (200) for replenishing water and a defrosting mechanism (300) for defrosting. A return flow mechanism (500) for realizing circulating defrosting is provided between the collection mechanism (400) and the liquid replenishment mechanism (200). The water storage mechanism (100) includes a water tank (110), a heating tube (120) is installed in the inner cavity of the water tank (110), a temperature sensor (130) is provided at the bottom of the inner cavity of the water tank (110), a high liquid level sensor (140) and a low liquid level sensor (150) are respectively provided on the upper and lower parts of one side of the inner cavity of the water tank (110), the liquid replenishment mechanism (200) is connected to the water inlet of the water tank (110), and the defrosting mechanism (300) is connected to the water outlet of the water tank (110).

2. The tunnel hot water defrosting device according to claim 1, characterized in that: The inner wall of the water tank (110) is fixedly connected to an insulated inner liner (111), and the temperature sensor (130), high liquid level sensor (140) and low liquid level sensor (150) are respectively installed on the corresponding positions of the inner wall of the insulated inner liner (111).

3. The tunnel hot water defrosting device according to claim 2, characterized in that: The top of the heat-insulating inner liner (111) is connected to a vent pipe (160), the top end of the vent pipe (160) extends to the top of the water tank (110), a pressure relief valve is installed on the vent pipe (160), and a pressure sensor (170) is installed on the top of the inner wall of the heat-insulating inner liner (111).

4. The tunnel hot water defrosting device according to claim 3, characterized in that: The replenishment mechanism (200) includes a water pump A (210), the outlet of the water pump A (210) is connected to the inlet of the heat-insulating inner liner (111) by a conduit A (220), and the inlet of the water pump A (210) is connected to a conduit B (230).

5. The tunnel hot water defrosting device according to claim 4, characterized in that: The defrosting mechanism (300) includes a water pump B (310), with a conduit C (320) connecting the inlet of the water pump B (310) to the outlet of the heat-insulating inner liner (111), and a conduit D (330) connecting the outlet of the water pump B (310). The end of the conduit D (330) away from the water pump B (310) is connected to a branch pipe A (340) and a branch pipe B (350) via a three-way pipe. At least three branch pipes (360) are connected to the branch pipe A (340), and the branch pipe B (350) is connected to the flushing pipe of the air cooler (1).

6. The tunnel hot water defrosting device according to claim 5, characterized in that: The collection mechanism (400) includes a liquid collection tank (410) installed at the bottom of the air cooler (1), and a drain pipe (420) is connected between the liquid collection tank (410) and the drain outlet of the air cooler (1).

7. The tunnel hot water defrosting device according to claim 6, characterized in that: The reflux mechanism (500) includes a reflux pipe (510), one end of which is connected to the outlet of the liquid collection tank (410), and the other end of which is connected to the conduit B (230) through a three-way pipe. A filter element (520) is installed on the reflux pipe (510).

8. The tunnel hot water defrosting device according to claim 7, characterized in that: The filter element (520) includes a filter box (521) connected to the return pipe (510). The inner cavity of the filter box (521) is provided with a plurality of filter screens (522) arranged in parallel. The top of the filter box (521) is detachably connected to a maintenance cover (523). A sealing gasket (524) is embedded between the maintenance cover (523) and the filter box (521).

9. The tunnel hot water defrosting device according to claim 7, characterized in that: Both sides of the filter screen (522) are fixedly connected with protrusions (5221). The inner wall of the filter box (521) is provided with a groove (5211) that matches the protrusions (5221). The inner wall of the groove (5211) is slidably connected to the surface of the corresponding protrusion (5221).

10. The tunnel hot water defrosting device according to claim 9, characterized in that: Electrically controlled valves are installed on the conduit B (230), the branch pipe B (350), the branch pipe (360), the drain pipe (420), and the return pipe (510), and the electrically controlled valve on the conduit B (230) is located between its inlet and the tee pipe.

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