An anti-freezing device for expansion joints of concrete face slabs of dams

Abstract

An anti-freezing device for expansion joints of concrete slabs of dams. The present invention relates to an anti-freezing device. The present invention aims to solve the problem that in existing cold regions, artificial de-icing is required after the expansion joints of dams are frozen in winter, and the operation process is highly dangerous. The present invention includes a nozzle, a power suspension device, a connecting pipe, a guide rail, a submersible pump, and a guide wheel mechanism. The guide rail is arranged along the height direction of the expansion joint. The outlet end of the nozzle is connected to the power suspension device, the inlet end of the nozzle is connected to the submersible pump through the connecting pipe, and the power suspension device moves along the length direction of the guide rail through the guide wheel mechanism. The present invention is used for anti-freezing of expansion joints of concrete slabs of dams.

Description

Technical Field

[0001] The present invention relates to an anti-freezing device, in particular to an anti-freezing device for expansion joints of concrete slabs of a dam body. Background Art

[0002] Generally known anti-freezing methods for expansion joints of reservoir dams in cold regions in winter are as follows: after the reservoir freezes, workers go to the frozen positions at the expansion joints and use tools such as ice shovels and sledgehammers to perform ice removal operations manually. Since manual operations can only adopt the method of regular ice removal and cannot remove ice continuously for 24 hours, the situation of seal damage of the expansion joints often occurs due to untimely ice removal. At the same time, manual operations are very dangerous. When the ice layer is thick in winter, it is relatively safe for workers to construct on the ice surface. In seasons such as early winter and the beginning of spring when the ice layer is relatively thin, it is very dangerous for workers to operate on the ice surface. Therefore, it is necessary to develop an automatic anti-freezing and ice removal device to solve the above technical problems. Summary of the Invention

[0003] In order to solve the problem that manual ice removal is required after the expansion joints of the dam body in cold regions are frozen in winter and the operation process is highly dangerous, the present invention further provides an anti-freezing device for expansion joints of concrete slabs of a dam body.

[0004] The technical solution adopted by the present invention to solve the above technical problems is:

[0005] An anti-freezing device for expansion joints of concrete slabs of a dam body includes a spray head, a power suspension device, a connecting pipe, a guide rail, a submersible pump and a guide wheel mechanism. The guide rail is arranged along the height direction of the expansion joint. The outlet end of the spray head is connected to the power suspension device, the inlet end of the spray head is connected to the submersible pump through the connecting pipe, and the power suspension device moves along the length direction of the guide rail through the guide wheel mechanism.

[0006] The beneficial effects of the present invention are:

[0007] The present invention provides an anti-freezing device for expansion joints of concrete slabs of a dam body to solve the technical problem of ice removal and anti-freezing required at the expansion joints of dams in cold regions in winter. It can meet the requirement of continuous operation for 24 hours, can float up and down with the change of water level, is safer. At the same time, the anti-freezing device meets the technical requirements of convenient operation, simple installation, rust prevention and durability, can effectively prevent the expansion joints of the concrete slabs of the dam body from freezing, and does not require subsequent manual ice removal treatment, thus ensuring personal safety. Description of the Drawings

[0008] Figure 1 is the overall structural schematic diagram of the present invention;

[0009] Figure 2 is the structural schematic diagram of the present invention after removing the spray head 1, the connecting pipe 3 and the submersible pump 5;

[0010] Figure 3Yes Figure 2 Top view;

[0011] Figure 4 Is the front view of the power suspension device 2 in the present invention;

[0012] Figure 5 Yes Figure 4 Top view;

[0013] Figure 6 Is the front sectional view of the power suspension device 2 in the present invention;

[0014] Figure 7 Is the front view of the guide wheel mechanism in the present invention;

[0015] Figure 8 Yes Figure 6 Top view;

[0016] Figure 9 Is the front view of the guide rail 4 in the present invention;

[0017] Figure 10 Is the schematic cross-sectional view of the guide rail 4 in the present invention. Specific embodiments

[0018] Specific embodiment 1: With reference to Figures 1 to 10 It is described that an anti-freezing device for expansion joints of dam concrete panels in this embodiment includes a spray head 1, a power suspension device 2, a connecting pipe 3, a guide rail 4, a submersible pump 5 and a guide wheel mechanism. The guide rail 4 is arranged along the height direction of the expansion joint. The outlet end of the spray head 1 is connected to the power suspension device 2, and the inlet end of the spray head 1 is connected to the submersible pump 5 through the connecting pipe 3. The power suspension device 2 moves along the length direction of the guide rail 4 through the guide wheel mechanism.

[0019] After the anti-freezing device for expansion joints of dam concrete panels is assembled, the guide rail is fixed to the expansion joint of the concrete panel, the power suspension device is installed on the guide rail, and the spray head is connected to the submersible pump through a connecting water pipe. When the submersible pump operates, the water with a higher temperature at the bottom of the reservoir is transported to the spray head through the water pipe. The pressurized water impacts the turbine of the power suspension device to drive the propeller to rotate, pushing the power suspension device to float on the water surface along the guide rail, ensuring that the high-temperature water circulates at the expansion joint and keeping the water surface from freezing.

[0020] In this embodiment, the guide rail 4 is installed on the dam concrete panel. The length of the guide rail 4 determines the movement range of the power suspension device 2. The length and installation range of the guide rail 4 should be determined according to the change range of the winter water level of the reservoir. The material of the guide rail 4 should be selected as a material with poor heat conduction performance and little influence by temperature.

[0021] The submersible pump 5 is connected to the nozzle 1 through the connecting pipe 3, providing power for the power suspension device 2 and transporting the relatively warm water below the reservoir to the water surface. The water is propelled by the propeller to generate a rapid circulation, ensuring that the water at the expansion joints of the concrete slab does not freeze in winter. This prevents the waterproof rubber at the expansion joints from being torn and damaged by the sunken ice surface when the reservoir water level drops due to power generation in winter. The power suspension device 2 can ensure that the nozzle 1 changes up and down along the concrete slab as the water level changes. The present invention solves the problem of the waterproof rubber at the expansion joints of the concrete slab of the rolled earth-rock dam with concrete slab in cold regions being torn and damaged by the sunken ice surface, ensuring the winter safety of the reservoir.

[0022] Specific Embodiment 2: With reference to Figures 1 to 6 description, the power suspension device 2 in this embodiment includes a connecting sleeve 2-3, a turbine mechanism, and a group of propeller blades 2-2. One end of the connecting sleeve 2-3 is connected to the outlet end of the nozzle 1, the other end of the connecting sleeve 2-3 is connected to the turbine mechanism, and a group of propeller blades 2-2 are fixedly connected to the outside of the turbine mechanism along the circumferential direction. Other compositions and connection methods are the same as those in Specific Embodiment 1.

[0023] In this embodiment, the water sprayed out by the nozzle 1 impacts on the turbine mechanism through the connecting sleeve 2-3, causing the turbine mechanism to rotate under the action of the water flow, and then driving the propeller blades 2-2 to rotate.

[0024] The propeller of the power suspension device 2 can generate sufficient buoyancy to keep the power suspension device at the water surface position and enhance the water flow circulation at the water surface.

[0025] The power suspension device 2 uses the pressurized water output by the submersible pump 5 as power, and the turbine mechanism drives the propeller to rotate to generate buoyancy. Parameters such as the flow rate, head, and motor power of the submersible pump 5 are determined according to data such as the water depth of the reservoir, winter temperature, and the weight of the power suspension device 2.

[0026] The turbine of the power suspension device 2 can convert all the energy of the water flow output by the submersible pump 5 into the kinetic energy of the propeller, ensuring that the water flow does not spray too high. In winter, it can transport the high-temperature water in the lower layer of the reservoir to the expansion joints, without splashing and freezing, and can ensure that the expansion joints do not freeze.

[0027] Specific Embodiment 3: With reference to Figures 1 to 6 description, the power suspension device 2 in this embodiment includes a connecting sleeve 2-3, a turbine mechanism, and a group of propeller blades 2-2. One end of the connecting sleeve 2-3 is connected to the outlet end of the nozzle 1, the other end of the connecting sleeve 2-3 is connected to the turbine mechanism, and a group of propeller blades 2-2 are fixedly connected to the outside of the turbine mechanism along the circumferential direction. Other compositions and connection methods are the same as those in Specific Embodiment 2.

[0028] Specific Embodiment 4: With reference toFigures 1 to 6 Description: The turbine mechanism described in this embodiment includes a rotating shaft 2-1, an outer housing 2-4, and a plurality of turbine blades 2-5. The plurality of turbine blades 2-5 are evenly distributed and fixedly connected to the rotating shaft 2-1 in the circumferential direction. A connecting frame 2-6 is fixedly connected to the inner side wall at the other end of the connecting sleeve 2-3. The end of the rotating shaft 2-1 is rotatably connected to the middle of the connecting frame 2-6. The outer housing 2-4 is sleeved outside the plurality of turbine blades 2-5. The lower end of the outer housing 2-4 is rotatably connected to the other end of the connecting sleeve 2-3. The tip of each turbine blade 2-5 is respectively connected to the upper end of the outer housing 2-4. Other components and connection methods are the same as those in the second specific embodiment.

[0029] In this embodiment, the axes of the turbine blades 2-5 and the propeller blades 2-2 are both inclined, and their inclination directions are opposite. The tip of the turbine blade 2-5 and the upper end of the outer housing 2-4 are connected by a smooth curve transition.

[0030] In this embodiment, the turbine mechanism is an integral structure. A limiting flange is provided on the inner side wall at the other end of the connecting sleeve 2-3 in the axial direction. The lower end of the outer housing 2-4 is sleeved outside the limiting flange to realize the positioning of the outer housing 2-4.

[0031] The connecting frame 2-6 is a frame body so that water flow can pass through the connecting frame 2-6 and enter the turbine mechanism.

[0032] Specific Embodiment Five: Combining Figures 1 to 6 Description: The power suspension device 2 described in this embodiment includes a connecting sleeve 2-3, a turbine mechanism, and a group of propeller blades 2-2. One end of the connecting sleeve 2-3 is connected to the outlet end of the nozzle 1, and the other end of the connecting sleeve 2-3 is connected to the turbine mechanism. A group of propeller blades 2-2 are evenly distributed and fixedly connected to the outside of the turbine mechanism in the circumferential direction. Other components and connection methods are the same as those in the fourth specific embodiment.

[0033] Specific Embodiment Six: Combining Figures 1 to 3 and Figures 7 to 8 Description: The guide wheel mechanism described in this embodiment includes two support frames 6, two outer guide wheels 7, and two inner guide wheels 8. The two support frames 6 are arranged in parallel in the height direction. Each support frame 6 is arranged in the horizontal direction. One end of the support frame 6 is fixedly connected to the power suspension device 2, and the other end of the support frame 6 is fixedly connected to the outer guide wheel 7 and the inner guide wheel 8. The outer guide wheel 7 and the inner guide wheel 8 are arranged oppositely, and the outer guide wheel 7 and the inner guide wheel 8 respectively move along the length direction of the guide rail 4. Other components and connection methods are the same as those in the first, second, third, fourth, or fifth specific embodiment.

[0034] Specific Embodiment Seven: Combining Figures 1 to 3 and Figures 7 to 10It should be noted that the cross-sectional shape of the guide rail 4 in this embodiment is "U" shaped. The other components and connection methods are the same as those in the sixth specific embodiment.

[0035] Specific embodiment eight: With reference to Figures 1 to 3 and Figures 7 to 10 It should be noted that a notch 6-1 is provided on the side wall at the other end of the support frame 6 in the height direction. One side wall of the guide rail 4 is inserted into the notch 6-1. The outer circumferential side wall of the outer guide wheel 7 is in rolling connection with the outer side wall in the middle of the guide rail 4, and the outer circumferential side wall of the inner guide wheel 8 is in rolling connection with the inner side wall in the middle of the guide rail 4. The other components and connection methods are the same as those in the seventh specific embodiment.

[0036] The guide rail 4 designed in this way cooperates with the guide wheel mechanism. While realizing the guidance in the vertical direction, the cooperation between the guide rail 4, the support frame 6 and the inner guide wheel 8 can also play a limiting role to prevent deviation during the movement process.

[0037] Specific embodiment nine: With reference to Figure 1 and Figures 9 to 10 It should be noted that fixed brackets 9 are provided at both the upper and lower ends of the guide rail 4 in this embodiment. The other components and connection methods are the same as those in the first, second, third, fourth, fifth, seventh or eighth specific embodiments.

[0038] Specific embodiment ten: With reference to Figures 1 to 6 It should be noted that the power suspension device 2 in this embodiment is made of a rust-proof material with low density, high wear resistance and high strength. The other components and connection methods are the same as those in the first, second, third, fourth or fifth specific embodiments.

[0039] Although the present invention has been described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed, as long as they do not depart from the spirit and scope of the present invention as defined by the appended claims. It should be understood that different dependent claims and the features described herein can be combined in a manner different from that described in the original claims. It should also be understood that the features described in connection with a single embodiment can be used in other described embodiments.

Claims

1. An anti-freezing device for expansion joints of the concrete face slab of a dam, characterized in that: The described anti-freezing device for the expansion joint of the dam concrete panel includes a nozzle (1), a power suspension device (2), a connecting pipe (3), a guide rail (4), a submersible pump (5) and a guide wheel mechanism. The guide rail (4) is arranged along the height direction of the expansion joint. The outlet end of the nozzle (1) is connected to the power suspension device (2), and the inlet end of the nozzle (1) is connected to the submersible pump (5) through the connecting pipe (3). The power suspension device (2) moves along the length direction of the guide rail (4) through the guide wheel mechanism; The power suspension device (2) includes a connecting sleeve (2-3), a turbine mechanism and a group of propeller blades (2-2). One end of the connecting sleeve (2-3) is connected to the outlet end of the nozzle (1), and the other end of the connecting sleeve (2-3) is connected to the turbine mechanism. A group of propeller blades (2-2) are fixedly connected along the circumferential direction on the outer side of the turbine mechanism; The guide wheel mechanism includes two support frames (6), two outer guide wheels (7) and two inner guide wheels (8). The two support frames (6) are arranged in parallel along the height direction, and each support frame (6) is arranged along the horizontal direction. One end of the support frame (6) is fixedly connected to the power suspension device (2), and the other end of the support frame (6) is fixedly connected with the outer guide wheel (7) and the inner guide wheel (8). The outer guide wheel (7) and the inner guide wheel (8) are arranged oppositely, and the outer guide wheel (7) and the inner guide wheel (8) move along the length direction of the guide rail (4) respectively; One end of the connecting sleeve (2-3) and the outlet end of the nozzle (1) are connected by threads; The turbine mechanism includes a rotating shaft (2-1), an outer housing (2-4) and a plurality of turbine blades (2-5). The plurality of turbine blades (2-5) are fixedly connected along the circumferential direction on the rotating shaft (2-1). A connecting frame (2-6) is fixedly connected to the inner side wall at the other end of the connecting sleeve (2-3). The end of the rotating shaft (2-1) is rotatably connected to the middle part of the connecting frame (2-6). The outer housing (2-4) is sleeved outside the plurality of turbine blades (2-5). The lower end of the outer housing (2-4) is rotatably connected to the other end of the connecting sleeve (2-3). The tip of each turbine blade (2-5) is respectively connected to the upper end of the outer housing (2-4).

2. The anti-freezing device for the expansion joint of the concrete face slab of the dam body according to claim 1, wherein: The rotating shaft (2-1) and the connecting frame (2-6) are rotatably connected through a bearing; 3. The antifreezing device for expansion joints of the concrete face slab of a dam body according to claim 1, characterized in that: The cross-sectional shape of the guide rail (4) is "U" shaped; 4. The anti-freezing device for the expansion joint of the dam concrete face slab according to claim 3, characterized in that: A notch (6-1) is arranged along the height direction on the side wall at the other end of the support frame (6). One side wall of the guide rail (4) is inserted into the notch (6-1). The outer circumferential side wall of the outer guide wheel (7) is in rolling connection with the outer side wall in the middle of the guide rail (4). The outer circumferential side wall of the inner guide wheel (8) is in rolling connection with the inner side wall in the middle of the guide rail (4).

5. The anti-freezing device for expansion joints of the concrete face slab of a dam body according to claim 1, 2, 3 or 4, characterized in that: Fixed brackets (9) are arranged at both the upper and lower ends of the guide rail (4); 6. The anti-freezing device for expansion joints of the concrete face slab of a dam body according to claim 1 or 2, characterized in that: The power suspension device (2) is a power suspension device made of a low-density, high-wear-resistance, high-strength anti-rust material.

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