Large arc-shaped radiator outflow test device

Abstract

The utility model discloses a large-scale arc-shaped radiator outflow test device, which comprises a water tank, an arc-shaped radiator is arranged at the bottom of the water tank, two end faces of the arc-shaped radiator are provided with casings in a matched manner, and the casings are matched with the end faces, in contact with the arc-shaped radiator, of the arc-shaped radiator in shape. The outer wall face, making contact with water flow, of the casing is the same as the outer wall face, making contact with the water flow, of the arc-shaped radiator in shape, and water flow in the water tank is guided to be completely attached to the outer wall face of the arc-shaped radiator for even flushing. According to the utility model, the underwater flow heat exchange of the arc-shaped radiator can be simulated, the actual situation is better met, the test accuracy is improved, the test cost is reduced, and the test period is shortened.

Description

Technical Field

[0001] The utility model belongs to the technical field of underwater test devices and relates to an outflow test device for a large arc radiator. Background Art

[0002] For large curved radiators of several meters to more than ten meters, in the underwater dynamic test device, in order to make the curved radiator fit the boss for heat exchange, so that the test process conforms to the actual working state of the product, and to avoid uneven water flow distribution during the test, which may cause large errors in the test. The general practice is to simulate the product's underwater working state, put the test piece into the water tank, and fit it to the tooling boss to simulate underwater work, and test whether the flow heat exchange of the curved heat generator product meets the requirements. This requires the arrangement of an outflow test device in a limited space to realize the process of seawater flowing through the product when the product is working underwater.

[0003] At present, the test device for testing the underwater flow heat transfer of large curved radiators is the water tunnel test, but the existing water tunnel test has problems such as high test cost, complex system, long test cycle, large device volume, and large area. The water tunnel test has low cost-effectiveness, long cycle, and cumbersome and complicated test for testing the flow heat transfer of large curved radiators.

[0004] For example, the Chinese patent application number 201811254441.9 discloses a comprehensive test water tank for studying the seabed wall effect. By adjusting the distance between the test model and the smooth light-transmitting plate, the water flow parameters are changed to simulate the influence of different hydrodynamic characteristics near the wall on the movement of underwater vehicles. However, this patent is difficult to apply to the outflow test of the curved radiator underwater, and it is impossible to measure the flow resistance of seawater passing over the outer wall of the radiator and the heat exchange between seawater and the fluid inside the radiator. Summary of the invention

[0005] In order to solve the above problems, the utility model provides a large arc radiator outflow test device, which simulates the flow heat exchange of the arc radiator under water, is more in line with the actual situation, improves the test accuracy, reduces the test cost, and shortens the test cycle.

[0006] The technical solution adopted by the utility model is a large-scale arc radiator outflow test device, comprising a water tank, a curved radiator placed at the bottom of the water tank, two end faces of the curved radiator are matched with a casing installed, the end face shapes of the casing and the curved radiator in contact with each other match, the outer wall surface of the casing contacting the water flow is the same as the outer wall surface of the curved radiator contacting the water flow, and the water flow in the water tank is guided to completely fit the outer wall surface of the curved radiator for uniform flushing.

[0007] Furthermore, the casing includes an arc-shaped first boss and a second boss, the first boss is installed at one end of the arc-shaped radiator, and the second boss is installed at the other end of the arc-shaped radiator; a row of equally spaced water outlets is installed between the first boss and the inner wall of the water tank, and a row of equally spaced water pumps is installed between the second boss and the inner wall of the water tank. Water in the water tank flows out from the water outlet and is drained through the first boss. The water flows along the shape and evenly flushes the outer wall of the arc-shaped radiator in perfect conformity with the outer wall.

[0008] Furthermore, the arrangement direction of the water outlets is parallel to the arrangement direction of the water pumps, and both are perpendicular to the axis of the arc-shaped radiator.

[0009] Furthermore, pipes are evenly laid at the bottom of the water tank, and the pipes are arranged along the axial extension direction of the arc-shaped radiator. One end of the pipe is connected to the output end of the water pump, and the other end of the pipe is connected to the water outlet. The water in the water tank is guided by the water pump through the pipe and flows out from the water outlet, forming a circulating flow in the water tank.

[0010] Furthermore, the distance between the end faces of the first boss and the second boss and the inner wall of the water tank is 0.5m~1m.

[0011] Furthermore, the water in the water tank is a cold side medium, which is exchanged with the hot side medium inside the arc radiator.

[0012] Furthermore, the spacing between adjacent water outlets is 200 mm, and the diameter of the water outlet is 60 mm.

[0013] Furthermore, the axial length of the first boss is twice the axial length of the arc-shaped heat sink.

[0014] Furthermore, a flow rate sensor is installed on the outer wall of the arc radiator to measure the flow rate of seawater in the water tank when it passes over the outer wall of the arc radiator, and the flow rate of the water pump is adjusted according to the measured flow rate.

[0015] Furthermore, a base is installed at the bottom of the water tank, and a plurality of vertical reinforcing ribs are evenly arranged on the outer wall of the water tank. Each reinforcing rib is supported by an inclined steel pipe. The steel pipe, the base and the reinforcing rib form a triangle to provide stable support.

[0016] The beneficial effects of the utility model are:

[0017] 1. The utility model simulates the flow speed of seawater through a water pump, a pipeline and a water outlet, and the casing simulates the installation end surface of the arc radiator to guide the water flow in the water tank so that the water flow completely fits the outer wall of the arc radiator for flushing and heat exchange, which greatly improves the uniform flow characteristics of the water flow and is more in line with the actual situation of the arc radiator working underwater in seawater.

[0018] 2. The water in the water tank of the utility model enters the water pump, is further rectified through the pipeline at the bottom of the water tank, and then enters the water tank through the water outlet at the other end of the water tank, forming a circulating flow area, so that the test device has high integration, small space occupation and short test cycle.

[0019] 3. The experimental device of the utility model has the characteristics of low energy consumption, low cost, simple structure, simple operation, energy saving and environmental protection. It can measure the flow resistance of seawater passing over the outer wall of the radiator and the heat exchange between seawater and the internal fluid of the radiator. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of an embodiment of the utility model.

[0022] Figure 2 yes Figure 1 A cross-sectional view along the pipeline axis.

[0023] Figure 3 yes Figure 1 Cross-sectional view along the pipeline direction.

[0024] Figure 4 It is a schematic diagram of the distribution of water pumps and water outlets in an embodiment of the utility model.

[0025] Figure 5 It is a structural schematic diagram of a casing in an embodiment of the utility model.

[0026] Among them, 1. water pump, 2. first boss, 3. second boss, 4. pipeline, 5. water outlet, 6. arc radiator, 7. water tank, 8. reinforcing ribs, 9. steel pipe, 10. base. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Example

[0029] A large arc radiator outflow test device, such as Figure 1-2 As shown, it includes a water trough 7, and an arc-shaped radiator 6 is placed at the bottom of the water trough 7. The two end surfaces of the arc-shaped radiator 6 are matched with a casing installed thereon. The shapes of the end surfaces of the casing and the arc-shaped radiator 6 that are in contact match each other. The outer wall surface of the casing that contacts the water flow is in the same shape as the outer wall surface of the arc-shaped radiator 6 that contacts the water flow. On the same curvature and plane, the water flow in the water trough 7 is guided to completely fit the outer wall surface of the arc-shaped radiator 6 to evenly flush it, and heat exchange is performed, which greatly improves the uniform flow characteristics of the water flow.

[0030] like Figure 5 As shown, the casing includes a first boss 2 and a second boss 3 . The first boss 2 is installed at the left end of the arc-shaped heat sink 6 , and the second boss 3 is installed at the right end of the arc-shaped heat sink 6 .

[0031] The distances between the end faces of the first boss 2 and the second boss 3 and the inner wall of the water tank 7 are 0.5m~1m respectively. If the distance is too small, the water will become less uniform when passing through the curved radiator 6 after coming out of the water outlet 5, and the loading and unloading of the curved radiator 6 will be more difficult; if the distance is too large, it will affect the floor space, and will cause excessive water volume, resulting in waste of resources and the like.

[0032] A row of equally spaced water outlets 5 are installed between the first boss 2 and the inner wall of the water tank 7, and a row of equally spaced water pumps 1 are installed between the second boss 3 and the inner wall of the water tank 7, to ensure that the arc-shaped radiator 6 can be completely covered and flushed; the water in the water tank 7 comes out from the water outlet 5, is drained by the first boss 2, and flows along the shape, completely adheres to the outer wall of the arc-shaped radiator 6 and flushes evenly. During the test, the water in the water tank 7 is the cold side medium, which is exchanged with the hot side medium inside the arc-shaped radiator 6.

[0033] In some embodiments, Figure 3-4 As shown, the bottom of the water tank 7 is evenly laid with pipes 4, which are arranged along the axial extension direction of the arc-shaped radiator 6 and are laid below the arc-shaped radiator 6; one end of the pipe 4 is connected to the output end of the water pump 1, and the other end of the pipe 4 is connected to the water outlet 5; the water in the water tank 7 is guided by the water pump 1 through the pipe 4, comes out from the water outlet 5, and is drained through the first boss 2, completely fitting the arc-shaped radiator 6 and flushing through, so that the product can work underwater and form a circulating flow in the water tank 7.

[0034] In some embodiments, there are 16 water outlets 5 evenly arranged, and the spacing between adjacent water outlets 5 is 180~220mm. The specific diameter of the water outlet 5 mainly depends on the flow rate and flow velocity required during the outflow test. The diameter used in this embodiment is 50~60mm. If it exceeds the range, it will cause the water flow to be too large when flushing the arc radiator 6, affecting the flow uniformity.

[0035] Values ​​outside the range will result in uneven water flow.

[0036] The number of water pumps 1 provided depends on the water flow required for the test and the flow rate required to flush the arc radiator 6 during the test. In this embodiment, the flow rate is 1.568 m / s, and 4 water pumps 1 are provided mainly for uniformity. If the number of water pumps 1 is too small, the flow rate on both sides of the arc radiator 6 cannot be met. If there are too many water pumps 1, there will be too much turbulence, making it difficult to meet the uniformity.

[0037] In the present embodiment, the flow rate of seawater in the water tank 7 flowing through the arc radiator 6 is adjusted and controlled by the diameter of the water outlet 5 and the flow rate of the water pump 1. A flow sensor is installed on the outer wall of the arc radiator 6 to measure the flow rate of seawater when passing through the outer wall of the arc radiator 6. The flow rate of the water pump 1 is adjusted according to the measured flow rate to make the flow rate meet the requirements.

[0038] A base 10 is installed at the bottom of the water tank 7, and a plurality of vertical reinforcing ribs 8 are evenly arranged on the outer wall of the water tank 7. Each reinforcing rib 8 is supported by an inclined steel pipe 9. The steel pipe 9, the base 10, and the reinforcing ribs 8 form a triangle, providing stable support and improving the compressive strength of the water tank 7. Bolt holes are arranged around the arc radiator 6, and waist-shaped bolt holes are reserved on the first boss 2 and the second boss 3, so that the installation can be adjusted even if the size deviates.

[0039] In the embodiment of the utility model, an outflow test device is arranged in a limited space. In actual use, the length of the first boss 2 and the flow rate and flow velocity of the water outlet 5 are calculated in advance, and the water flow of seawater passing over the surface of the arc radiator 6 is made uniform through the first boss 2; the axial length of the first boss 2 is twice the axial length of the arc radiator 6 (the axial length of the arc radiator 6 in the embodiment is 1200mm), which effectively alleviates the turbulence phenomenon at the water outlet 5 and makes the flow velocity of the water uniform; when the diameter of the water outlet 5 is determined, the flow rate and flow velocity of the water outlet 5 are achieved by adjusting the flow rate of the water pump 1, simulating the installation method of the product in the working state and the flow process of water flushing the surface of the product, which can be used to measure the flow resistance of seawater passing over a large (axial length of several meters to more than ten meters) arc radiator 6 and the heat exchange with the fluid inside the arc radiator 6.

[0040] Flow resistance calculation: The pressure of the seawater before and after passing through the arc radiator 6 is measured by a pressure sensor, and the pressure difference before and after passing through the arc radiator 6 is calculated to obtain the flow resistance value.

[0041] Heat transfer calculation: The temperature of the seawater before and after passing through the arc radiator 6 is measured by a temperature sensor, and the formula Q=CmΔt Calculate the heat transfer, where C is the specific heat capacity of the flowing medium or seawater inside the radiator, unit: J / (kg ℃); mis the mass flow rate of the flowing medium or seawater inside the radiator, kg / s.

[0042] Each embodiment in this specification is described in a related manner, and the same or similar parts between the embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A large arc radiator outflow test device, comprising a water tank (7), a curved radiator (6) placed at the bottom of the water tank (7), characterized in that: The two end surfaces of the arc-shaped radiator (6) are matched with a casing for mounting thereon. The shapes of the end surfaces of the casing and the arc-shaped radiator (6) in contact match each other. The outer wall surface of the casing in contact with the water flow has the same shape as the outer wall surface of the arc-shaped radiator (6) in contact with the water flow. The water flow in the water tank (7) is guided to completely fit the outer wall surface of the arc-shaped radiator (6) for uniform flushing.

2. A large arc radiator outflow test device according to claim 1, characterized in that: The casing comprises an arc-shaped first boss (2) and a second boss (3), the first boss (2) being mounted on one end of the arc-shaped radiator (6), and the second boss (3) being mounted on the other end of the arc-shaped radiator (6); a row of water outlets (5) with equal spacing are mounted between the first boss (2) and the inner wall of the water tank (7), and a row of water pumps (1) with equal spacing are mounted between the second boss (3) and the inner wall of the water tank (7); water in the water tank (7) flows out from the water outlets (5), is drained through the first boss (2), and the water flows along the shape, completely adheres to the outer wall of the arc-shaped radiator (6), and evenly washes through.

3. A large arc radiator outflow test device according to claim 2, characterized in that: The arrangement direction of the water outlets (5) is parallel to the arrangement direction of the water pump (1), and both are perpendicular to the axis of the arc-shaped radiator (6).

4. A large arc radiator outflow test device according to claim 2, characterized in that: The bottom of the water tank (7) is evenly paved with pipelines (4), which are arranged along the axial extension direction of the arc-shaped radiator (6), one end of the pipeline (4) is connected to the output end of the water pump (1), and the other end of the pipeline (4) is connected to the water outlet (5). Water in the water tank (7) is guided by the water pump (1) through the pipeline (4) and flows out from the water outlet (5), forming a circulating flow in the water tank (7).

5. A large arc radiator outflow test device according to claim 2, characterized in that: The distance between the end faces of the first boss (2) and the second boss (3) and the inner wall of the water tank (7) is 0.5 m to 1 m.

6. A large arc radiator outflow test device according to claim 1, characterized in that: The water in the water tank (7) is a cold side medium, which is exchanged with the hot side medium inside the arc-shaped radiator (6).

7. A large arc radiator outflow test device according to claim 2, characterized in that: The spacing between adjacent water outlets (5) is 200 mm, and the diameter of the water outlet (5) is 60 mm.

8. A large arc radiator outflow test device according to claim 2, characterized in that: The axial length of the first boss (2) is twice the axial length of the arc-shaped heat sink (6).

9. A large arc radiator outflow test device according to claim 2, characterized in that: A flow rate sensor is installed on the outer wall surface of the arc-shaped radiator (6) for measuring the flow rate of seawater in the water tank (7) when it passes over the outer wall surface of the arc-shaped radiator (6), and adjusting the flow rate of the water pump (1) according to the measured flow rate.

10. A large arc radiator outflow test device according to claim 1, characterized in that: A base (10) is installed at the bottom of the water tank (7), and a plurality of vertical reinforcing ribs (8) are evenly arranged on the outer wall of the water tank (7). Each reinforcing rib (8) is supported by an inclined steel pipe (9). The steel pipe (9), the base (10) and the reinforcing rib (8) form a triangle to provide stable support.

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