Dam concrete water cooling device in cold region

Abstract

The utility model relates to the technical field of concrete water cooling, in particular to a cold region dam concrete water cooling device which comprises a water inlet pipe, a water outlet pipe and cooling water pipes, a plurality of cooling water pipes are embedded in concrete, and the two ends of each cooling water pipe are connected with the water inlet pipe and the water outlet pipe respectively. Wherein a temperature detection unit and a water temperature heating unit are arranged on the periphery of the water inlet end of the water inlet pipe, the temperature detection unit comprises a temperature sensor and a wire winding box, the temperature sensor is used for detecting the water temperature, and a data line is wound around the wire winding box through a wire winding assembly in the wire winding box; the arrangement of the winding assembly can wind the redundant part of the data line, on one hand, the data line can be protected through the line winding box, on the other hand, the redundant part of the data line can be prevented from drooping or swinging randomly, the service life is prevented from being affected by friction, the accidental touch probability is reduced, and the temperature sensor is prevented from being separated from the data line as much as possible.

Description

Technical Field

[0001] This utility model relates to the field of concrete water cooling technology, and in particular to a water cooling device for dam concrete in cold regions. Background Technology

[0002] Water cooling of dam concrete is a construction technique that involves pre-embedding cooling water pipes inside the concrete and circulating cooling water to lower the concrete temperature. This technique can effectively control the temperature rise of large-volume concrete during the pouring process, prevent cracks caused by temperature stress, and thus improve the overall safety and durability of the dam.

[0003] Water cooling of dam concrete is a commonly used temperature control technology in the construction of large-volume concrete structures. For example, Chinese Patent Publication No. CN113048699B discloses a process and device for water cooling of dam concrete in high-altitude, cold regions. This process includes the following steps: water temperature detection to determine the inlet water temperature and the required water temperature; when the inlet water temperature is lower than the required water temperature, the inlet is heated and the water temperature is adjusted; water cooling begins immediately after concrete pouring, with maximum flow rate during the heating phase and normal flow rate during the cooling phase; while water cooling is being carried out, the internal temperature change of the concrete is monitored, and the water flow rate is adjusted to control the cooling rate until the internal temperature of the concrete reaches the required level. Using this invention, water cooling construction can be carried out even in high-altitude, cold seasons, saving construction time; ensuring that the difference between the inlet cooling water temperature and the maximum concrete temperature is within the allowable range; and reducing the temperature difference between the inside and outside of the concrete, preventing concrete cracks.

[0004] In actual operation, a temperature sensor is installed at the water inlet. The temperature sensor is usually electrically connected to the monitoring terminal via a data cable. However, considering the variable installation distance between the monitoring terminal and the temperature sensor, the data cable often droops or swings randomly because it cannot be retracted, which affects the service life of the data cable over a long period of time. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as the inability to rewind data cables, and to propose a water-cooling device for dam concrete in cold regions.

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

[0007] Design a water cooling device for dam concrete in cold regions, including an inlet pipe, an outlet pipe, and a cooling water pipe. Several cooling water pipes are pre-embedded in the concrete, and the two ends of the cooling water pipes are respectively connected to the inlet pipe and the outlet pipe.

[0008] The water inlet pipe is equipped with a temperature detection unit and a water heating unit. The temperature detection unit includes a temperature sensor and a cable reel. The temperature sensor is used to detect the water temperature. The cable reel has a data cable wound up through an internal cable winding assembly. The temperature sensor is electrically connected to the monitoring terminal through the data cable.

[0009] Furthermore, the cable reel includes a pair of identical housings, which are fixed together by a connecting structure, and the two housings are provided with a first wiring groove communicating with the internal cavity at their extended ends.

[0010] Furthermore, the winding assembly includes a support rod and a take-up member, wherein a relief groove is provided on the inner side of one of the housings, the support rod is fixedly connected at the midpoint of the relief groove, and the take-up member is rotatably connected to the periphery of the support rod.

[0011] Furthermore, the winding component has a cylindrical structure, and a coil spring is provided in the internal cavity. The two ends of the coil spring are fixedly connected to the winding component and the support rod, respectively.

[0012] The winding component has a pair of corresponding second wiring slots at one end of the opening, and the middle part of the data cable is fixed in the second wiring slot by friction.

[0013] Furthermore, the winding assembly also includes a ratchet and a pawl. The ratchet is fixedly connected to the bottom of the winding member and rotatably connected in the relief groove. The pawl is rotatably connected in the relief groove via a rotating shaft and a torsion spring. The ratchet engages with the pawl along the winding direction of the data cable.

[0014] Furthermore, the housing connects the inner and outer sides to form an arc-shaped groove, and a toggle is fixedly connected to the side of the pawl. The toggle is slidably connected in the arc-shaped groove, and the pawl is separated from the ratchet through the toggle.

[0015] The present invention proposes a water cooling device for dam concrete in cold regions, which has the following advantages: A temperature sensor is installed at the water inlet. The temperature sensor is electrically connected to a monitoring terminal via a data cable to detect the water temperature, thus better coordinating with the water heating unit to heat the cooling water in the pipe. Furthermore, the data cable is wound up in a cable reel via a winding assembly. This winding assembly protects the data cable and prevents it from drooping or swinging, thus avoiding friction that could affect its lifespan and reducing the probability of accidental contact. It also minimizes the risk of the temperature sensor separating from the data cable, resulting in a simple and practical structure. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 for Figure 1 A magnified structural diagram of area A;

[0018] Figure 3 This is a schematic diagram of the structure of the winding assembly of this utility model;

[0019] Figure 4 for Figure 3 A schematic diagram of the enlarged structure of region B;

[0020] Figure 5 This is a schematic diagram of the ratchet and pawl of this utility model;

[0021] Figure 6 for Figure 5 A magnified structural diagram of region C.

[0022] In the diagram: 1. Inlet pipe; 2. Outlet pipe; 3. Cooling water pipe; 4. Temperature detection unit; 41. Temperature sensor; 42. Cable reel box; 421. Housing; 422. Connection structure; 423. First wiring slot; 424. Clearance slot; 425. Arc-shaped slot; 43. Data cable; 5. Water heating unit; 6. Cable reel assembly; 61. Support rod; 62. Rewinding component; 621. Second wiring slot; 63. Coil spring; 64. Ratchet; 65. Torsion spring; 66. Pawl; 67. Actuator. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Reference Figure 1-6 It includes an inlet pipe 1, an outlet pipe 2, and a cooling water pipe 3. Several cooling water pipes 3 are pre-embedded in the concrete, and the two ends of the cooling water pipes 3 are respectively connected to the inlet pipe 1 and the outlet pipe 2.

[0025] A temperature detection unit 4 and a water heating unit 5 are provided around the water inlet end of the water inlet pipe 1. The temperature detection unit 4 includes a temperature sensor 41 and a winding box 42. The temperature sensor 41 is used to detect the water temperature. The winding box 42 has a data cable 43 wound up through an internal winding assembly 6. The temperature sensor 41 is electrically connected to the monitoring terminal through the data cable 43.

[0026] In some embodiments, the specific functions of the temperature detection unit 4 and the water temperature heating unit 5 are as follows: Water temperature detection: After the snow melting pipeline is laid, the inlet water temperature and the required water temperature for cooling water are determined. When the inlet water temperature is less than the required water temperature, the inlet water is heated and the water temperature is adjusted; otherwise, no heating or temperature adjustment is performed. Water cooling: Water cooling begins immediately after the concrete pouring is completed. During the concrete heating stage, the maximum flow rate is used to reduce the highest internal temperature of the concrete. During the concrete cooling stage, the normal flow rate is used, and the flow rate is continuously adjusted as the concrete temperature decreases. Specific operations are existing technologies and will not be elaborated here.

[0027] Furthermore, the cable reel 42 includes a pair of identical housings 421, which are fixed together by a connecting structure 422, and the two ends of the pair of housings 421 are provided with a first wiring groove 423 that communicates with the internal cavity.

[0028] In this embodiment, as Figure 5 As shown, the connecting structure 422 includes a connecting post and a connecting groove. A pair of housings 421 are provided with connecting posts and connecting grooves at their respective ends on opposite sides. The connecting posts are inserted into the connecting grooves, and the pair of housings 421 are spliced ​​and fixed by friction fixing.

[0029] The first wiring slot 423 provides an opening for the data cable 43 to connect the temperature sensor 41 and the monitoring terminal.

[0030] Furthermore, the winding assembly 6 includes a support rod 61 and a winding member 62. One of the housings 421 has a relief groove 424 on its inner side. The support rod 61 is fixedly connected at the midpoint of the relief groove 424. The winding member 62 is rotatably connected to the periphery of the support rod 61.

[0031] More specifically, the winding member 62 has a cylindrical structure, and a coil spring 63 is provided in the internal cavity. The two ends of the coil spring 63 are fixedly connected to the winding member 62 and the support rod 61, respectively.

[0032] The winding member 62 has a pair of corresponding second wiring grooves 621 at one end of the opening, and the data cable 43 is fixed in the second wiring grooves 621 by friction at the middle position.

[0033] In this embodiment, as Figure 4 As shown, a protrusion is provided in the internal cavity of the winding member 62. The protrusion and the support rod 61 are both located in the middle and extend downward to form a slot. The two ends of the coil spring 63 are bent and are respectively fastened in a pair of slots by friction.

[0034] It is worth mentioning that when the data cable 43 is wound up, the coil spring 63 is in a tensile state. That is, after the winding member 62 is relaxed, the coil spring 63 releases the tension and drives the winding member 62 to rotate in conjunction with the support rod 61. At this time, the data cable 43 is wound around the outside of the winding member 62 due to friction because it is engaged in the second wiring slot 621.

[0035] The height of the second wiring slot 621 is greater than that of the coil spring 63 to prevent the data cable 43 from contacting the coil spring 63.

[0036] In general, the winding assembly 6 also includes a ratchet 64 and a pawl 66. The ratchet 64 is fixedly connected to the bottom of the winding member 62 and rotatably connected in the relief groove 424. The pawl 66 is rotatably connected in the relief groove 424 via a rotating shaft and a torsion spring 65. The ratchet 64 engages with the pawl 66 along the winding direction of the data cable 43.

[0037] Finally, the housing 421 connects the inner and outer sides to form an arc-shaped groove 425. The pawl 66 is fixedly connected to a toggle member 67 on its side. The toggle member 67 is slidably connected in the arc-shaped groove 425. The pawl 66 is separated from the ratchet 64 through the toggle member 67.

[0038] In this embodiment, the ratchet 64 engages with the pawl 66 along the winding direction of the data line 43, which means that the data line 43 can be pulled and extended normally. However, the data line 43 cannot be wound up after being pulled and extended because the winding member 62 is engaged.

[0039] In specific operation, the two ends of the torsion spring 65 are fixedly connected to the relief groove 424 and the pawl 66 respectively. Under the action of the torsion spring 65, the pawl 66 is locked with the ratchet 64. Of course, the actuating member 67 has a protrusion on the outside of the housing 421. The pawl 66 is driven to rotate by the protrusion. When the pawl 66 is disengaged from the ratchet 64, the data cable 43 can be wound up under the action of the coiling spring 63.

[0040] Operating mode: During operation, the water inlet pipe 1 is pumped by the water pump group. During the pumping process, the temperature sensor 41 is also electrically connected to the monitoring terminal through the data cable 43 to detect the water temperature in the water inlet pipe 1.

[0041] Then, the excess part of the data cable 43 will be wound up by the cable reel box 42 and its internal cable winding assembly 6. The middle part of the data cable 43 is engaged in the second wiring groove 621, and the two ends of the data cable 43 will extend out through the first wiring groove 423. Then, after the winding member 62 is released, the winding member 62 rotates under the action of the coil spring 63, and then the data cable 43 is wound in an S-shape around the outside of the winding member 62 under the action of friction.

[0042] Taking advantage of the unidirectional rotation between the ratchet 64 and the pawl 66, the data cable 43 can be extended by simultaneously stretching both ends. And because the pawl 66 stops the ratchet 64, the data cable 43 will not rewind.

[0043] Finally, the pawl 66 is driven to separate from the ratchet 64 by the actuating element 67, and the winding element 62 rotates under the action of the coil spring 63 to wind up the data cable 43.

[0044] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A water-cooling device for concrete dams in cold regions, comprising an inlet pipe (1), an outlet pipe (2), and a cooling water pipe (3), characterized in that: Several cooling water pipes (3) are pre-embedded in the concrete, and the two ends of the cooling water pipes (3) are respectively connected to the inlet pipe (1) and the outlet pipe (2); Among them, a temperature detection unit (4) and a water temperature heating unit (5) are provided around the water inlet end of the water inlet pipe (1). The temperature detection unit (4) includes a temperature sensor (41) and a winding box (42). The temperature sensor (41) is used to detect the water temperature. The winding box (42) has a data cable (43) wound up through an internal winding assembly (6). The temperature sensor (41) is electrically connected to the monitoring terminal through the data cable (43).

2. The water cooling device for dam concrete in cold regions according to claim 1, characterized in that: The cable reel (42) includes a pair of identical housings (421), which are fixed together by a connecting structure (422), and the pair of housings (421) are provided with a first wiring groove (423) at the extended portions at both ends that communicate with the internal cavity.

3. A water-cooling device for dam concrete in cold regions according to claim 2, characterized in that: The winding assembly (6) includes a support rod (61) and a winding member (62). One of the housings (421) has a relief groove (424) on its inner side. The support rod (61) is fixedly connected at the midpoint of the relief groove (424). The winding member (62) is rotatably connected to the periphery of the support rod (61).

4. A water-cooling device for dam concrete in cold regions according to claim 3, characterized in that: The winding member (62) has a cylindrical structure, and a coil spring (63) is provided in the internal cavity. The two ends of the coil spring (63) are fixedly connected to the winding member (62) and the support rod (61), respectively. The winding member (62) has a pair of corresponding second wiring grooves (621) at one end of the opening, and the data cable (43) is fixed in the second wiring groove (621) by friction at the middle position.

5. A water-cooling device for dam concrete in cold regions according to claim 4, characterized in that: The winding assembly (6) further includes a ratchet (64) and a pawl (66). The ratchet (64) is fixedly connected to the bottom of the winding member (62) and rotatably connected in the relief groove (424). The pawl (66) is rotatably connected in the relief groove (424) via a rotating shaft and a torsion spring (65). The ratchet (64) engages with the pawl (66) along the winding direction of the data cable (43).

6. A water-cooling device for dam concrete in cold regions according to claim 5, characterized in that: The housing (421) forms an arc-shaped groove (425) connecting the inner and outer sides. A toggle (67) is fixedly connected to the side of the pawl (66). The toggle (67) is slidably connected in the arc-shaped groove (425). The pawl (66) is separated from the ratchet (64) through the toggle (67).

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