Steel plate cooling device for steel cover type air cushion surge chamber

Abstract

A steel cover type air cushion surge chamber steel plate cooling device belongs to the technical field of water conservancy and hydropower engineering auxiliary equipment and comprises a cold water tank body, an air cushion surge chamber body is fixedly mounted on the upper surface of the cold water tank body, and side steel covers are fixedly mounted on the front surface and the rear surface of the air cushion surge chamber body. An arc-shaped steel cover is fixedly installed on the upper surface of the air cushion pressure regulating chamber body, a top atomization spraying mechanism is fixedly installed between the arc-shaped steel cover and the air cushion pressure regulating chamber body, side atomization spraying mechanisms are fixedly installed between side steel covers and the air cushion pressure regulating chamber body, and a flow dividing cylinder is fixedly installed on the right surface of the air cushion pressure regulating chamber body. A high-pressure water supply device is installed between the flow dividing barrel and the cold water tank body, collecting openings are formed in the two sides of the upper surface of the cold water tank body, and the two collecting openings are located on the inner sides of the corresponding side steel covers respectively.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of water conservancy and hydropower engineering auxiliary equipment, and specifically relates to a steel cover type air cushion surge chamber steel plate cooling device. BACKGROUND

[0002] In the water conservancy and hydropower engineering, the steel cover type air cushion surge chamber is widely applied due to its outstanding advantages. The steel plate structure not only needs to maintain the stability of the air cushion, but also needs to withstand the complex working conditions such as water flow, gas pressure and temperature change, which is crucial to the safe operation of the hydropower station.

[0003] In actual operation, the steel plate faces many challenges. The high-speed water flow through the surge chamber generates heat by rubbing against the inner wall of the steel plate, causing the temperature of the steel plate to rise rapidly. The temperature fluctuation caused by the compression and expansion of the gas in the air cushion also affects the steel plate through heat conduction. For example, when the power of a large hydropower station is adjusted, the gas pressure and temperature in the surge chamber can change by tens of degrees Celsius.

[0004] High temperature is extremely harmful to the steel plate. The deformation stress caused by thermal expansion and contraction easily causes local deformation or even cracking of the steel plate, threatening the safety of the structure. High temperature also reduces the mechanical properties of the steel plate and shortens its service life. At the same time, temperature changes cause the gas in the air cushion to be unstable, affecting the accuracy and efficiency of the pressure regulation of the surge chamber.

[0005] At present, although there are some conventional cooling measures, the effect is not good. For example, the steel plate surface is sprayed with a heat dissipation coating, which has low heat dissipation efficiency and is difficult to cope with complex working conditions. External air cooling is limited by the structure and environment of the surge chamber, and is prone to dead angles. The existing water cooling pipe arrangement has problems such as uneven water flow distribution and low heat exchange efficiency, and cannot fully utilize the advantages of water cooling. Therefore, a steel cover type air cushion surge chamber steel plate cooling device is provided to solve the above technical problems. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a steel cover type air cushion surge chamber steel plate cooling device to solve the problems raised in the background.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0008] The utility model provides a kind of steel cover air cushion pressure regulating chamber steel plate cooling device, including cold water tank main body, the upper surface of the cold water tank main body is fixedly installed with air cushion pressure regulating chamber main body, the front and rear surfaces of the air cushion pressure regulating chamber main body are fixedly installed with side steel cover, the upper surface of the air cushion pressure regulating chamber main body is fixedly installed with arc steel cover, arc steel cover and air cushion pressure regulating chamber main body between fixedly installed with top atomization spray mechanism, side steel cover and air cushion pressure regulating chamber main body between are fixedly installed with side atomization spray mechanism, the right surface of the air cushion pressure regulating chamber main body is fixedly installed with shunt cylinder, and the shunt cylinder is used to supply water to the top atomization spray mechanism and the side atomization spray mechanism, high-pressure water supply device is installed between the shunt cylinder and the cold water tank main body, the upper surface of the cold water tank main body is equipped with collection port on both sides, and two the collection port is located in the corresponding side steel cover inside.

[0009] In the above technical solution, a plurality of flow slowing plates are fixedly installed in the arc steel cover and the side steel cover at equal intervals, and a plurality of drainage holes are formed in one end of the flow slowing plates close to the air cushion pressure regulating chamber main body.

[0010] In the above technical solution, the diameter of the drainage hole is 3-5mm.

[0011] In the above technical solution, the top atomization spray mechanism includes an arc-shaped shunt pipe, the arc-shaped shunt pipe is fixedly installed on the right surface of the air cushion pressure regulating chamber main body, a plurality of atomization spray pipes A are fixedly installed on the left surface of the arc-shaped shunt pipe, the atomization spray pipes A and the arc-shaped shunt pipe are in communication with each other, and the plurality of atomization spray pipes A are arranged in the arc steel cover at equal intervals in an arc shape, and a connecting pipe A with an electric control valve is fixedly installed on the water inlet end of the arc-shaped shunt pipe.

[0012] In the above technical solution, the side atomization spray mechanism includes a straight shunt pipe, the straight shunt pipe is fixedly installed on the right surface of the air cushion pressure regulating chamber main body, a plurality of atomization spray pipes B are fixedly installed on the left surface of the straight shunt pipe, the atomization spray pipes B and the straight shunt pipe are in communication with each other, and the plurality of atomization spray pipes B are arranged in the corresponding side steel cover at equal intervals, and a connecting pipe B with an electric control valve is fixedly installed on the water inlet end of the straight shunt pipe.

[0013] In the above technical solution, the right surface of the shunt cylinder is provided with a water inlet end, the outer surface of the shunt cylinder is provided with three water outlet ends, the connecting pipe A and the two connecting pipes B are connected to the corresponding water inlet end of the shunt cylinder respectively.

[0014] In the above technical solution, the high-pressure water supply device includes a high-pressure water pump, the high-pressure water pump is fixedly installed on the upper surface of the arc steel cover, and a water suction pipe is fixedly connected between the water inlet end of the high-pressure water pump and the inner cavity of the cold water tank main body, and a water supply pipe is fixedly connected between the water outlet end of the high-pressure water pump and the water inlet end of the shunt cylinder.

[0015] In the technical scheme, the sealing gasket is fixedly installed between the side steel cover and the upper surface of the cold water tank body and the lower surface of the arc-shaped steel cover.

[0016] In the technical scheme, the valve-equipped water filling pipe is fixedly installed on the outer surface of the cold water tank body.

[0017] Compared with the prior art, the steel cover type air cushion pressure regulating chamber steel plate cooling device has the beneficial effects that:

[0018] The steel cover type air cushion pressure regulating chamber steel plate cooling device provided by the utility model has the advantages that: on the one hand, the cold water in the cold water tank body can be delivered to the side position atomizing spraying mechanism in the two side steel covers and the top position atomizing spraying mechanism in the arc-shaped steel cover through the shunt cylinder by using the high-pressure water supply device, and the covering cooling of the steel cover on the outer surface of the air cushion pressure regulating chamber body is implemented by the dispersion type spraying cooling operation of the atomizing spraying pipe A and the atomizing spraying pipe B. Since the sprayed water can slide down along the outer surface of the steel cover, the cooling range is greatly expanded, the coverage rate of the cold water is increased, the advantages of the water cooling technology are fully exerted, and the cooling effect is significantly improved. In addition, the collecting opening of the device can effectively recycle the sliding water, realizes the recycling of the water resources, and embodies the good energy-saving and environment-friendly characteristics. On the other hand, the slow flow plate with the drainage function is arranged in the arc-shaped steel cover and the side steel cover, the flow rate of the water film can be effectively reduced by the slow flow plate, the contact time of the water film and the steel cover of the air cushion pressure regulating chamber body is prolonged, the heat transfer efficiency is improved from the perspective of the heat exchange principle, the cooling effect is further optimized, the steel cover of the air cushion pressure regulating chamber body can always be kept in the appropriate temperature range during the working process, and the stability and reliability of the equipment operation are improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a three-dimensional structure schematic view of the utility model.

[0020] Figure 2 It is a sectional structure schematic view of the utility model.

[0021] Figure 3 It is a top position atomizing spraying mechanism schematic view of the utility model.

[0022] Figure 4 It is a side position atomizing spraying mechanism schematic view of the utility model.

[0023] Figures 1-4The components include: 1. Cold water tank body; 11. Collection port; 12. Water injection pipe with valve; 2. Air cushion pressure regulating chamber body; 3. Side steel cover; 4. Arc-shaped steel cover; 41. Flow buffer plate; 411. Drain hole; 5. Top atomizing spray mechanism; 51. Arc-shaped diversion pipe; 52. Atomizing spray pipe A; 53. Connecting pipe A; 6. Side atomizing spray mechanism; 61. Straight diversion pipe; 62. Atomizing spray pipe B; 63. Connecting pipe B; 7. Diversion cylinder; 8. High-pressure water supply device; 81. High-pressure water pump; 82. Water supply pipe; 83. Pumping pipe. Detailed Implementation

[0024] 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.

[0025] In this embodiment, front, back, left, right, top, and bottom are... Figure 1 Describe the reference plane. See [link / reference] Figures 1-4 This utility model provides a technical solution:

[0026] The main body 1 of the cold water tank used in this device is an existing cold water storage device, which has its own cooling and heat dissipation structure, such as heat exchange tubes or heat dissipation fins on the outer wall and air cooling heat dissipation mechanism, etc. It is used here as existing technology and will not be explained in detail.

[0027] A steel-shrouded air cushion pressure regulating chamber steel plate cooling device includes a cold water tank body 1, an air cushion pressure regulating chamber body 2 fixedly installed on the upper surface of the cold water tank body 1, side steel covers 3 fixedly installed on both the front and rear surfaces of the air cushion pressure regulating chamber body 2, an arc-shaped steel cover 4 fixedly installed on the upper surface of the air cushion pressure regulating chamber body 2, a top atomizing spray mechanism 5 fixedly installed between the arc-shaped steel cover 4 and the air cushion pressure regulating chamber body 2, a side atomizing spray mechanism 6 fixedly installed between the side steel covers 3 and the air cushion pressure regulating chamber body 2, a diverter cylinder 7 fixedly installed on the right surface of the air cushion pressure regulating chamber body 2, the diverter cylinder 7 is used to supply water to the top atomizing spray mechanism 5 and the side atomizing spray mechanism 6, a high-pressure water supply device 8 is installed between the diverter cylinder 7 and the cold water tank body 1, and collection ports 11 are opened on both sides of the upper surface of the cold water tank body 1, with the two collection ports 11 located inside the corresponding side steel covers 3.

[0028] The high-pressure water supply device 8 can divide the cold water in the cold water tank body 1 into the top atomizing spray mechanism 5 and the two side atomizing spray mechanisms 6 through the shunt cylinder 7, and the cold water is sprayed from the corresponding atomizing spray mechanism to implement the dispersed spray cooling operation on the air cushion pressure regulating chamber steel plate, and the steel cover on the outer surface of the air cushion pressure regulating chamber body 2 is covered and cooled. Since the sprayed water naturally slides along the outer surface of the steel cover, the cooling range is greatly expanded, the coverage rate of the cold water is increased, the advantages of the water cooling technology are fully played, and the cooling effect is significantly improved.

[0029] In the actual manufacturing process, waterproof coating needs to be brushed on the outer surface of the air cushion pressure regulating chamber steel plate, the inner surface of the arc-shaped steel cover 4 and the side steel cover 3, and the outer surface of the flow slowing plate 41 to prolong the service life. In addition, sealing glue needs to be applied at the positions where the arc-shaped steel cover 4 and the side steel cover 3 are connected with the air cushion pressure regulating chamber steel plate to prevent water leakage and ensure that the water after use can be recycled into the cold water tank body 1.

[0030] It is worth noting that, as shown in Figure 2 , a plurality of flow slowing plates 41 are fixedly installed at equal intervals in the arc-shaped steel cover 4 and the side steel cover 3. The one end of the flow slowing plate 41 close to the air cushion pressure regulating chamber body 2 is provided with a plurality of drainage holes 411. The setting of the flow slowing plate 41 can reduce the sliding speed of the water film on the outer surface of the air cushion pressure regulating chamber steel plate to prolong the water film residence time and improve the cooling effect.

[0031] In addition, the diameter of the drainage hole 411 is 3-5 mm. This range can balance the water flow deceleration and drainage efficiency, avoid water accumulation caused by too small hole diameter, or avoid the flow rate not being effectively reduced caused by too large hole diameter. In the actual production process, if the spray water amount of the atomizing spray pipe is large or the mist droplet size is small, a hole diameter of 3-4 mm can be preferentially selected to prolong the water film residence time and enhance the evaporative cooling effect.

[0032] Specifically, as shown in Figure 1 and Figure 3 , the top atomizing spray mechanism 5 includes an arc-shaped shunt pipe 51 fixedly installed on the right surface of the air cushion pressure regulating chamber body 2. A plurality of atomizing spray pipes A52 are fixedly installed on the left surface of the arc-shaped shunt pipe 51. The atomizing spray pipes A52 and the arc-shaped shunt pipe 51 are in communication with each other, and the plurality of atomizing spray pipes A52 are arcuately and equidistantly distributed in the arc-shaped steel cover 4. A connecting pipe A53 with an electric control valve is fixedly installed at the water inlet end of the arc-shaped shunt pipe 51.

[0033] As shown in Figure 1 and Figure 4As shown, each side-position atomizing spray mechanism 6 includes a straight-position diversion pipe 61. The straight-position diversion pipe 61 is fixedly installed on the right surface of the air cushion pressure regulating chamber body 2, and multiple atomizing spray pipes B62 are fixedly installed on the left surface of the straight-position diversion pipe 61. The atomizing spray pipes B62 and the straight-position diversion pipe 61 are interconnected, and the multiple atomizing spray pipes B62 are equidistantly distributed in the corresponding side steel cover 3. The water inlet end of the straight-position diversion pipe 61 is fixedly installed with a connecting pipe B63 with an electric control valve.

[0034] During manufacturing, atomizing spray pipes A52 and B62 require nozzles to be installed at equal intervals on their outer surfaces, with the spray area between two adjacent nozzles covering a small range to avoid blind spots in the atomizing spray.

[0035] The right surface of the diverter cylinder 7 is provided with a water inlet end, and the outer surface of the diverter cylinder 7 is provided with three drain ends. The connecting pipe A53 and two connecting pipes B63 are respectively connected to the corresponding water inlet ends on the diverter cylinder 7.

[0036] The high-pressure water supply device 8 includes a high-pressure water pump 81, which is fixedly installed on the upper surface of the arc-shaped steel cover 4. A water pumping pipe 83 is fixedly connected between the water inlet end of the high-pressure water pump 81 and the inner cavity of the cold water tank body 1. A water supply pipe 82 is fixedly connected between the water outlet end of the high-pressure water pump 81 and the water inlet end of the diversion cylinder 7.

[0037] After the high-pressure water pump 81 is started, cold water can be supplied into the distribution cylinder 7 through the water pumping pipe 83 and the water supply pipe 82. Then, as needed, the electric control valves of the connecting pipe A53 and the connecting pipe B63 are opened to supply cold water into the top atomizing spray pipe A52 and the atomizing spray pipes B62 on both sides and spray it out. After the cold water comes into contact with the steel plate of the air cushion pressure regulating chamber, heat exchange occurs, thereby completing the cooling work of the steel plate of the air cushion pressure regulating chamber. During the heat exchange process of the cooled mist water, a water film is formed and comes into contact with the outside of the steel plate of the air cushion pressure regulating chamber. During the process of holding the spray, the water film accumulates in multiple layers to increase its own weight and slides down the outer surface of the steel plate of the air cushion pressure regulating chamber. During the slide, it is blocked by multiple flow slowing plates 41 below, which reduces the flow rate. It continues to slide down through the drain hole 411 and finally slides down to the bottom of the inner cavity of the side steel cover 3 and is collected in the cold water tank body 1 through the collection port 11 for recycling.

[0038] Sealing gaskets are fixedly installed between the side steel cover 3 and the upper surface of the cold water tank body 1 and the lower surface of the arc-shaped steel cover 4. The installation of the sealing gaskets can improve the sealing between the arc-shaped steel cover 4, the side steel cover 3 and the cold water tank body 1, prevent water film leakage, and ensure that it can be collected into the cold water tank body 1.

[0039] Finally, as Figure 1 As shown, a valved water injection pipe 12 is fixedly installed on the outer surface of the cold water tank body 1, and water can be injected into the cold water tank body 1 through the valved water injection pipe 12.

Claims

1. A steel cover air cushion pressure regulating chamber steel plate cooling device, comprising a cold water tank main body (1), the upper surface of the cold water tank main body (1) is fixedly installed with an air cushion pressure regulating chamber main body (2), characterized in that, The front and back surfaces of the air cushion pressure regulating chamber body (2) are fixedly installed with side steel covers (3), the upper surface of the air cushion pressure regulating chamber body (2) is fixedly installed with an arc-shaped steel cover (4), the arc-shaped steel cover (4) and the air cushion pressure regulating chamber body (2) are fixedly installed with a top atomizing spraying mechanism (5), the side steel covers (3) and the air cushion pressure regulating chamber body (2) are fixedly installed with side atomizing spraying mechanisms (6), the right surface of the air cushion pressure regulating chamber body (2) is fixedly installed with a shunt cylinder (7), the shunt cylinder (7) is used for supplying water to the top atomizing spraying mechanism (5) and the side atomizing spraying mechanisms (6), and the shunt cylinder (7) and the cold water tank body (1) are installed with a high-pressure water supply device (8). The upper surface of the cold water tank body (1) is provided with collecting openings (11) on both sides, and the two collecting openings (11) are located in the corresponding side steel covers (3) respectively.

2. A steel cover type air cushion pressure regulating chamber steel plate cooling device according to claim 1, characterized in that, A plurality of flow slowing plates (41) are fixedly installed in the arc-shaped steel cover (4) and the side steel cover (3) at equal intervals, and a plurality of drainage holes (411) are formed in one end of the flow slowing plates (41) close to the air cushion pressure regulating chamber body (2).

3. A steel cover type air cushion pressure regulating chamber steel plate cooling device according to claim 2, characterized in that, The diameter of the drainage hole (411) is 3-5mm.

4. A steel cover type air cushion pressure regulating chamber steel plate cooling device according to claim 1, characterized in that, The top atomizing spraying mechanism (5) comprises an arc-shaped shunt pipe (51), the arc-shaped shunt pipe (51) is fixedly installed on the right surface of the air cushion pressure regulating chamber body (2), a plurality of atomizing spraying pipes A (52) are fixedly installed on the left surface of the arc-shaped shunt pipe (51), the atomizing spraying pipes A (52) and the arc-shaped shunt pipe (51) are in communication, a plurality of the atomizing spraying pipes A (52) are arranged in the arc-shaped steel cover (4) at equal intervals in an arc shape, and a connecting pipe A (53) with an electric control valve is fixedly installed on the water inlet end of the arc-shaped shunt pipe (51).

5. A steel cover type air cushion pressure regulating chamber steel plate cooling device according to claim 4, characterized in that, The side atomizing spraying mechanism (6) comprises a straight shunt pipe (61), the straight shunt pipe (61) is fixedly installed on the right surface of the air cushion pressure regulating chamber body (2), a plurality of atomizing spraying pipes B (62) are fixedly installed on the left surface of the straight shunt pipe (61), the atomizing spraying pipes B (62) and the straight shunt pipe (61) are in communication, a plurality of the atomizing spraying pipes B (62) are arranged in the corresponding side steel cover (3) at equal intervals, and a connecting pipe B (63) with an electric control valve is fixedly installed on the water inlet end of the straight shunt pipe (61).

6. A steel cover type air cushion pressure regulating chamber steel plate cooling device according to claim 5, characterized in that, The right surface of the shunt cylinder (7) is provided with a water inlet end, the outer surface of the shunt cylinder (7) is provided with three water outlet ends, the connecting pipe A (53) and the two connecting pipes B (63) are connected with the corresponding water inlet ends of the shunt cylinder (7) respectively.

7. A steel cover type air cushion pressure regulating chamber steel plate cooling device according to claim 6, characterized in that, The high-pressure water supply device (8) comprises a high-pressure water pump (81), the high-pressure water pump (81) is fixedly installed on the upper surface of the arc-shaped steel cover (4), a water pumping pipe (83) is fixedly connected between the water inlet end of the high-pressure water pump (81) and the inner cavity of the cold water tank body (1), and a water supply pipe (82) is fixedly connected between the water outlet end of the high-pressure water pump (81) and the water inlet end of the shunt cylinder (7).

8. A steel cover type air cushion pressure regulating chamber steel plate cooling device according to claim 1, characterized in that, The side steel cover (3) is fixedly installed between the upper surface of the cold water tank body (1) and the lower surface of the arc-shaped steel cover.

9. A steel cover type air cushion pressure regulating chamber steel plate cooling device according to claim 1, characterized in that, The outer surface of the cold water tank body (1) is fixedly installed with a valve water filling pipe (12).

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