Anti-freezing protection water collection and drainage device for hoist chamber of pumped storage power station in severe cold area

Abstract

The utility model provides an anti-freezing protection water collection and drainage device for a hoist room of a pumped storage power station in a severe cold area. The anti-freezing protection water collection and drainage device comprises an anti-freezing protection water collection and drainage device, an electric heat tracing cable, a temperature control probe, a temperature controller and a power line, the groove-shaped stainless steel water collection and drainage device is of a double-layer hollow structure and is provided with a hollow cavity. The electric heat tracing cable penetrates through the hollow cavity and then is connected to the control end of the temperature controller. The temperature control probe is arranged on the surface of the groove-shaped stainless steel water collection and drainage device, and the output end of the temperature control probe is connected to the input end of the temperature controller; and the temperature controller is connected with a power supply through a power line. The anti-freezing protection water collection and drainage device for the hoist room of the pumped storage power station in the severe cold area is reasonable in structure, safe to use and free of maintenance, and solves the problem that snow falls into the hoist room of the pumped storage power station in winter, so that freezing is formed on the indoor ground, and indoor drainage is difficult. And meanwhile, energy can be effectively saved through the temperature controller and the self-regulation electric heat tracing cable.

Description

Technical Field

[0001] The utility model relates to an antifreeze protection water collecting and draining device, in particular to an antifreeze protection water collecting and draining device for a hoisting machine room of a pumped storage power station in severe cold areas. Background Art

[0002] The operating principle of a pumped-storage power station is to use electricity from the lower reservoir to the upper reservoir during nighttime low load periods. During daytime peak load periods, water is released from the upper reservoir to the lower reservoir to generate electricity and regulate the power grid. These power stations primarily serve peak load regulation, frequency regulation, phase regulation, and emergency backup functions.

[0003] Pumped-storage power stations typically operate on a daily basis, with peak daytime electricity demand and low nighttime demand forming a cycle. The water levels in the upper and lower reservoirs fluctuate with the operation of the turbines. The surrounding mountainous area and climate make it prone to rain, which can cause surges, especially during turbine startup and shutdown.

[0004] Pumped-storage power stations located in severely cold regions are typically located at high altitudes and experience long winters, with outdoor temperatures reaching as low as -40°C to -50°C. Snowfall easily accumulates at lower levels and freezes, causing a "frozen" surface. This not only stains the indoor floor but also damages equipment. Existing drainage methods, which rely on openings in the exterior walls, fail to address the ice melt problem. Furthermore, small animals can easily enter the machine room through these openings, damaging equipment and exterior windows. Therefore, existing technologies urgently need to address these issues. Utility Model Content

[0005] In view of the defects of the existing technology, the utility model provides an anti-freezing protection drainage device for the hoist room of a pumped storage power station in severe cold areas, which can effectively solve the above problems.

[0006] The technical solutions adopted in this utility model are as follows:

[0007] The utility model provides an antifreeze protection drainage device for a hoist room of a pumped storage power station in a severely cold region, comprising: an antifreeze protection drainage device (1), an electric heating cable (2), a temperature control probe (3), a temperature controller (4) and a power line (5);

[0008] The antifreeze protection drainage device (1) comprises a groove-shaped stainless steel drainage device (1.1) with holes in the side wall; a stainless steel porous mesh cover (1.2) is provided on the hole-carrying side wall of the groove-shaped stainless steel drainage device (1.1); the antifreeze protection drainage device (1) is arranged on the inner side of a portion without a protective structure at the base of the exterior wall of the hoist, and the hole-carrying side wall of the antifreeze protection drainage device (1) is abutted against the base of the exterior wall and communicated with the portion without a protective structure at the base of the exterior wall;

[0009] The groove-shaped stainless steel water collection and drainage device (1.1) has a double-layer hollow structure with a hollow cavity. After the self-regulating electric heating cable (2) passes through the hollow cavity, it is connected to the control end of the temperature controller (4). The temperature control probe (3) is arranged on the surface of the groove-shaped stainless steel water collection and drainage device (1.1), and its output end is connected to the input end of the temperature controller (4). The temperature controller (4) is connected to the power supply through a power cord (5).

[0010] Preferably, a plurality of the anti-freezing protection water collection and drainage devices (1) are arranged at the low-lying positions around the indoor ground of the hoist room.

[0011] Preferably, the temperature control probe (3) is arranged on the surface of the side wall with holes of the anti-freezing protection water collection and drainage device (1).

[0012] Preferably, the mesh holes of the stainless steel perforated mesh cover (1.2) are in an open state.

[0013] Preferably, the self-regulating electric heating cable (2) is in a serpentine shape and sequentially passes through the hollow cavity of the anti-freezing protection water collection and drainage device (1), and then bends on the side wall of the anti-freezing protection water collection and drainage device (1), thus forming a serpentine shape.

[0014] Preferably, the outside of the side wall with holes of the groove-shaped stainless steel water collection and drainage device (1.1) is connected to a square stainless steel drainage pipe.

[0015] Preferably, the bottom of the stainless steel drainage pipe has a double-layer hollow structure, and the self-regulating electric heating cable (2) passes through the hollow cavity of the stainless steel drainage pipe.

[0016] The anti-freezing protection water collection and drainage device for the hoist room of a pumped-storage power station in a severe cold region provided by the present utility model has the following advantages:

[0017] The present utility model provides an anti-freezing protection water collection and drainage device for the hoist room of a pumped-storage power station in a severe cold region with reasonable structure, safe use and maintenance-free, which solves the problem that snow in winter floods into the hoist room of the pumped-storage power station and then forms ice on the indoor ground, resulting in difficult indoor drainage. At the same time, the temperature controller and the self-regulating electric heating cable can effectively save energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is an axonometric view of the anti-freezing protection water collection and drainage device for the hoist room of a pumped-storage power station in a severe cold region provided by the present utility model;

[0019] Figure 2 is a top view of the anti-freezing protection water collection and drainage device provided by the present utility model;

[0020] Figure 3Installation diagram of the anti-freezing and protective water collection and drainage device provided by the present utility model

[0021] Among them:

[0022] 1 - Anti-freezing and protective water collection and drainage device; 1.1 - Grooved stainless steel water collection and drainage device; 1.2 - Stainless steel perforated mesh cover; 2 - Electric tracing cable; 3 - Temperature control probe; 4 - Temperature controller; 5 - Power cord. Specific implementation mode

[0023] In order to make the technical problems, technical solutions and beneficial effects solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0024] The present utility model provides an anti-freezing and protective water collection and drainage device for the hoist room of a pumped storage power station in a severe cold area, which has a reasonable structure, is safe to use and maintenance-free, solves the problem that snow drifts into the hoist room of the pumped storage power station in winter, resulting in frozen ground in the room and difficult drainage in the room, and can effectively save energy through a temperature controller and a self-regulating electric tracing cable.

[0025] Refer to Figures 1 to 3 , the present utility model provides an anti-freezing and protective water collection and drainage device for the hoist room of a pumped storage power station in a severe cold area, including: an anti-freezing and protective water collection and drainage device 1, an electric tracing cable 2, a temperature control probe 3, a temperature controller 4 and a power cord 5;

[0026] The anti-freezing and protective water collection and drainage device 1 includes a grooved stainless steel water collection and drainage device 1.1 with holes on the side wall; a stainless steel perforated mesh cover 1.2 is arranged on the side wall with holes of the grooved stainless steel water collection and drainage device 1.1; the mesh holes of the stainless steel perforated mesh cover 1.2 are in an open state; the anti-freezing and protective water collection and drainage device 1 is arranged on the inner side of the root of the exterior wall of the hoist room without an enclosure structure, and the side wall with holes of the anti-freezing and protective water collection and drainage device 1 is abutted against the root of the exterior wall and communicated with the part without an enclosure structure at the root of the exterior wall;

[0027] The grooved stainless steel water collection and drainage device 1.1 is a double-layer hollow structure with a hollow cavity; after the electric tracing cable 2 passes through the hollow cavity, it is connected to the control end of the temperature controller 4; specifically, the electric tracing cable 2 is in a serpentine shape and passes through the hollow cavity of the anti-freezing and protective water collection and drainage device 1 in sequence, and then bends on the side wall of the anti-freezing and protective water collection and drainage device 1 to form a serpentine shape; the temperature control probe 3 is arranged on the surface of the grooved stainless steel water collection and drainage device 1.1, for example, on the surface of the side wall with holes of the anti-freezing and protective water collection and drainage device 1, and its output end is connected to the input end of the temperature controller 4; the temperature controller 4 is connected to the power supply through the power cord 5.

[0028] In this application, the stainless-steel porous mesh cover 1.2 is fixedly installed on the side of the grooved stainless-steel water collection and drainage device 1.1, and the mesh holes of the stainless-steel porous mesh cover 1.2 are in an open state. That is to say, in this application, the stainless-steel porous mesh cover 1.2 is a non-adjustable mesh cover, which is more suitable for the application scenario of the hoist room in a pumped-storage power station. On the one hand, the structure is stable and reliable; on the other hand, since the mesh holes of the stainless-steel porous mesh cover 1.2 are in an open state, the accumulated water on the floor in the hoist room can be discharged in real time, and at the same time, small animals outside can be prevented from entering the room, meeting the use requirements.

[0029] In this application, the electric heating cable 2 is in a serpentine shape and is successively inserted into the hollow cavity of the grooved stainless-steel water collection and drainage device 1.1, and then bent on the side wall of the grooved stainless-steel water collection and drainage device 1.1 to form a serpentine shape. This arrangement can effectively increase the arrangement length of the electric heating cable 2 in the hollow cavity of the grooved stainless-steel water collection and drainage device 1.1, thereby improving its heating efficiency.

[0030] In practical applications, multiple anti-freezing and protection water collection and drainage devices 1 can be arranged in each hoist room. The number of anti-freezing and protection water collection and drainage devices 1 arranged is multiple, and they are simultaneously arranged at the low-lying positions around the indoor floor of the hoist room.

[0031] To improve its drainage effect, a square stainless-steel drain pipe can be further connected to the outside of the perforated side wall of the grooved stainless-steel water collection and drainage device 1.1. The bottom of the stainless-steel drain pipe is a double-layer hollow structure, and the electric heating cable 2 passes through the hollow cavity of the stainless-steel drain pipe to heat the inlet of the stainless-steel drain pipe to prevent it from freezing.

[0032] The utility model provides an anti-freezing and protection water collection and drainage device for the hoist room of a pumped-storage power station in a severe cold area, and its usage method and principle are as follows:

[0033] First, a grooved stainless-steel water collection and drainage device 1.1 with a hollow cavity is fabricated, and then the electric heating cable 2 is inserted into it. The electric heating cable 2 is controlled to start and stop through a temperature controller 4. The temperature controller 4 is connected to a temperature control probe 3. When the indoor temperature is sensed to be lower than the set starting temperature, the temperature controller 4 closes, and the self-regulating electric heating cable 2 inserted into the grooved stainless-steel water collection and drainage device 1.1 starts to work to achieve the anti-freezing function. Moreover, the electric heating cable 2 has a self-regulating function and can self-regulate the heating power according to the cable temperature, effectively avoiding the danger of overheating of the cable while achieving good energy-saving effects; the side wall of the stainless-steel porous mesh cover 1.2 can also provide a drainage function, preventing small animals from entering the room.

[0034] The thermostat 4 mainly plays the role of automatic control and can manually adjust the starting temperature. The required operating temperature of the equipment is -80°C to 80°C, and the starting temperature adjustment range is -20°C to 40°C. It is equipped with a power supply and a working indicator light. The temperature control probe 3 is a supporting product of the thermostat and consists of an induction device and a connecting wire. The induction probe is installed on the side of the stainless steel perforated mesh cover 1.2, and the temperature at the stainless steel perforated mesh cover 1.2 is transmitted to the thermostat 4 in real time through the connecting wire.

[0035] Through the professionally customized groove-shaped stainless steel water collection and drainage device 1.1, the groove-shaped water collection and drainage device is made of stainless steel and has a double-layer hollow structure at the bottom. An automatic electric heating cable 2 is arranged therein. When the system works, the groove-shaped stainless steel water collection and drainage device 1.1 can be heated to prevent condensation and freeze-thaw. Among them, the power of the electric heating cable 2 is selected in combination with the local extreme low temperature. An electric heating cable with self-regulating power is used, which can adjust the heating power according to its own temperature, can effectively save energy, and at the same time avoid danger caused by overheating of the cable.

[0036] Therefore, by controlling the starting temperature of the thermostat 4, when the humid and hot air or snow at the bottom of the upper and lower reservoirs in winter enters the room through the upper windows or other holes, in the initial state, the snow melts and flows towards the position of the outer wall root with a lower terrain around the room. When it reaches the groove-shaped stainless steel water collection and drainage device 1.1 of the present application, through the heating of the electric heating cable 2, the accumulation of water and ice at the lowest part is avoided, and the water is discharged into the stainless steel drain pipe through the stainless steel perforated mesh cover 1.2, realizing the effect of timely drainage and avoiding the phenomenon of "ice sealing" formed by the condensation and freezing of the accumulated water at the lowest part of the room after a period of time.

[0037] The following takes a large pumped-storage power station project adopting the technical solution of the present utility model as an example and further illustrates it in combination with the drawings:

[0038] A large pumped-storage power station is located in a severe cold area with a long winter, and the lowest temperature can reach -40°C to -50°C. There are 6 hoist rooms in each of the upper and lower reservoirs. The plane size of a single hoist room is about 35m×14m, the indoor net height of the first floor is about 15m, and the size of the non-enclosed structure part at the outer wall root is about 3.8m×4.7m. There is a non-enclosed structure part at the root of each facade.

[0039] On the one hand, in winter, the humid and hot air or snow at the bottom of the upper and lower reservoirs is very likely to enter the room through the upper windows or other holes, and it is very easy to freeze after condensation on the ground to form "ice sealing", resulting in water accumulation at the lowest part of the ground. Furthermore, in working conditions such as unit startup, shutdown, especially load rejection, the ground is slippery due to the ice on the indoor ground, which is very likely to cause equipment damage and personal injury. On the other hand, the non-enclosed structure part at the outer wall root is easy for small animals to enter, thus causing danger.

[0040] To meet the usage requirements and solve the above problems, considering the actual situation, a grooved stainless-steel water collection and drainage device with an area of about 0.6 ㎡ is set at the root of the outer wall of each hoist room in the upper and lower reservoirs of this project. According to the feedback from construction and operation, the risk of ground icing in winter in the indoor area has been well resolved.

[0041] Therefore, the present utility model solves the problem by setting a grooved stainless-steel water collection and drainage device with a double-layer hollow structure, and installing a self-regulating electric heating cable inside it. The automatic operation of the control system is realized through a temperature controller and a temperature control probe, thus avoiding the condensation and icing of the snow entering the room through the upper windows or other holes at the lowest point of the ground. The heating cable is a self-regulating electric heating cable, which can automatically adjust the heating power according to its own temperature. Besides effectively avoiding risks such as fires caused by overheating of the cable, it also has great advantages in terms of energy conservation. Through the above measures, it can be ensured that the water collection and drainage device for anti-freezing protection of the hoist room in a pumped-storage power station in a severe cold area will not have the phenomenon of "ice blockage" in winter, thus effectively avoiding damage to equipment and outer windows caused by the inability to balance air pressure due to "ice blockage" of the indoor ground, protecting the safety of indoor equipment and outer windows, and preventing personnel from being injured. The side wall of the stainless-steel perforated mesh cover can also provide a drainage function and at the same time prevent small animals from entering the room. The equipment operates automatically and does not require operation and maintenance management.

[0042] The water collection and drainage device for anti-freezing protection of the hoist room in a pumped-storage power station in a severe cold area provided by the present utility model has clear and reasonable materials and structures, is economical and practical, and is convenient to install. It can be used for the transformation of the water collection and drainage devices for anti-freezing protection of other existing pumped-storage power stations.

[0043] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. An anti-freezing, protection, water collection and drainage device for the hoist room of a pumped-storage power station in a severe cold area, characterized in that, Including: An anti-freezing protection water collection and drainage device (1), an electric heating cable (2), a temperature control probe (3), a temperature controller (4) and a power cord (5); The anti-freezing protection water collection and drainage device (1) includes a grooved stainless steel water collection and drainage device (1.1) with holes on the side wall; a stainless steel perforated mesh cover (1.2) is arranged on the perforated side wall of the grooved stainless steel water collection and drainage device (1.1); the anti-freezing protection water collection and drainage device (1) is arranged on the inner side of the root of the outer wall of the hoist room without an enclosure structure, and the perforated side wall of the anti-freezing protection water collection and drainage device (1) is abutted against the root of the outer wall and communicated with the part of the outer wall root without an enclosure structure; The grooved stainless steel water collection and drainage device (1.1) is of a double-layer hollow structure with a hollow cavity; after the electric heating cable (2) passes through the hollow cavity, it is connected to the control end of the temperature controller (4); the temperature control probe (3) is arranged on the surface of the grooved stainless steel water collection and drainage device (1.1), and its output end is connected to the input end of the temperature controller (4); the temperature controller (4) is connected to the power supply through the power cord (5).

2. The anti-freezing and protection water collection and drainage device for the hoist room of a pumped storage power station in severe cold regions according to claim 1, wherein The number of the arranged anti-freezing protection water collection and drainage devices (1) is multiple, and they are arranged at the low-lying positions around the indoor ground of the hoist room.

3. The anti-freezing and drainage device for the hoist room of a pumped-storage power station in cold regions according to claim 1, wherein, The temperature control probe (3) is arranged on the surface of the perforated side wall part of the anti-freezing protection water collection and drainage device (1).

4. The anti-freezing and drainage device for the hoist room of a pumped-storage power station in severe cold regions according to claim 1, characterized in that, The mesh holes of the stainless steel perforated mesh cover (1.2) are in an open state.

5. The anti-freezing and drainage device for the hoist room of a pumped storage power station in severe cold regions according to claim 1, characterized in that, The electric heating cable (2) is in a snake shape, passes through the hollow cavity of the anti-freezing protection water collection and drainage device (1) in sequence, and then bends on the side wall of the anti-freezing protection water collection and drainage device (1), thus forming a snake shape.

6. The anti-freezing and drainage device for the hoist room of a pumped-storage power station in severe cold regions according to claim 1, characterized in that The outside of the perforated side wall of the grooved stainless steel water collection and drainage device (1.1) is connected to a square stainless steel drain pipe.

7. The anti-freezing and protection water collection and drainage device for the hoist room of a pumped storage power station in severe cold regions according to claim 6, wherein, The bottom of the stainless steel drain pipe is of a double-layer hollow structure, and the electric heating cable (2) passes through the hollow cavity of the stainless steel drain pipe.

Images