Cooling device and three-roller plate rolling machine comprising same

Abstract

The invention discloses a cooling device and a three-roller plate rolling machine comprising the same. The cooling device comprises a hydraulic oil tank, a cooler, an oil pump and a one-way valve, the hydraulic oil tank, the oil pump, the one-way valve and the cooler are sequentially connected. The cooler is arranged behind the oil pump, air can be prevented from being mixed into oil, oil suction resistance of the oil pump is reduced, and unsmooth oil suction caused by the air suction phenomenon is prevented. As the oil obtains power before entering the cooler, the flowing speed of the oil in the cooler is increased, and the cooling effect is improved. As the oil at the oil pump has impact force, the one-way valve is arranged between the oil pump and the cooler to buffer the oil, and the oil is prevented from damaging the cooler. According to the three-roller plate rolling machine, the conditions that the oil temperature is too high and the machine is shut down due to alarm can be reduced, the production efficiency is improved, the maintenance rate and the maintenance cost are reduced, the service life of equipment sealing pieces of the three-roller plate rolling machine is prolonged, and the equipment failure rate is reduced.

Description

Technical Field

[0001] The invention relates to the field of shipbuilding, and in particular to a cooling device and a three-roller plate rolling machine comprising the same. Background Art

[0002] The three-roll plate rolling machine is a key equipment for processing steel plate shapes in the shipbuilding field. It has three working rolls: one on the top and two on the bottom. Each working roll is supported by a group of supporting rollers. The upper working roll generates downward pressure through the hydraulic system. The two lower working rolls are driven to rotate independently in two directions by hydraulic motors. The steel plate is shaped by hydraulically driving each action.

[0003] When the three-roll plate rolling machine is working, the oil temperature will rise rapidly due to the heavy load. Therefore, in the prior art, a set of independent cooling devices is provided in the hydraulic system of the three-roll plate rolling machine to form a complete cooling circuit. Its structure is as follows: Figure 1 As shown, the oil flows out from the hydraulic oil tank 7' and enters the cooler 1' to be cooled; the cooling fan 2' faces the cooler 1' to further improve the cooling effect; the cooled oil is driven by the oil pump 5' to circulate in the cooling circuit; the oil pump 5' and the cooling fan 2' share a motor 8' for power supply; the oil driven by the oil pump 5' flows through the filter 4', and then flows through the stop valve 6' back to the hydraulic oil tank 7' to achieve the purpose of cooling; when the hydraulic oil temperature reaches 65 degrees (the usual alarm temperature), the alarm unit (not shown in the figure) alarms and shuts down. However, even if the cooling device works normally, the following problems may occur:

[0004] Since the hot air flow needs to be blown out from the cooling circuit to the outside at the cooler 1', the cooler 1' is usually connected to the outside. At the same time, the oil flows through the cooler 1' in the cooling circuit, which causes air to mix into the oil, increasing the oil suction resistance of the oil pump 5', causing empty suction and resulting in poor oil suction; and the oil can only obtain further power after entering the oil pump 5'. Therefore, the oil in the cooler 1' flows slowly and cannot achieve the normal cooling effect.

[0005] Poor cooling device effect will cause the three-roller plate rolling machine to frequently experience high oil temperature and alarm shutdown after a period of operation. The operator needs to wait for the oil temperature to cool down before starting the machine, which seriously affects the production progress. Summary of the invention

[0006] The technical problem to be solved by the present invention is to overcome the defect that the cooling device of the three-roller plate rolling machine in the prior art has a poor effect, and to provide a cooling device and a three-roller plate rolling machine including the same.

[0007] The present invention solves the above technical problems through the following technical solutions:

[0008] A cooling device, comprising a hydraulic oil tank, a cooler, and an oil pump;

[0009] The cooling device also includes a one-way valve;

[0010] The hydraulic oil tank, the oil pump, the one-way valve and the cooler are connected in sequence.

[0011] In the present technical solution, by providing the cooling device and placing the cooler after the oil pump, it is possible to avoid air mixing in the oil, reduce the oil suction resistance of the oil pump, and prevent the occurrence of air suction phenomenon leading to poor oil suction. Since the oil obtains power before entering the cooler, the flow rate of the oil in the cooler is accelerated, improving the cooling effect. Furthermore, since the oil at the pump of the oil pump has impact force, a one-way valve is set between the oil pump and the cooler to buffer the oil and prevent the oil from damaging the cooler.

[0012] Preferably, the hydraulic oil tank comprises an oil tank outlet and an oil tank inlet, and the oil tank outlet, the oil pump, the one-way valve, the cooler, and the oil tank inlet are connected in sequence.

[0013] In the present technical solution, through the above arrangement, the oil can be circulated in and out of the hydraulic oil tank, thereby reducing the cooling cost.

[0014] Preferably, the cooling device further comprises a stop valve, and the stop valve is used to open or stop the flow of oil in the cooling device.

[0015] In this technical solution, through the above settings, the operation of the cooling device can be controlled with a relatively simple structure.

[0016] Preferably, the shut-off valve is located between the cooler and the oil tank inlet.

[0017] In the present technical solution, through the above settings, the cut-off point of the oil flow can be made between the cooler and the oil tank inlet. In this way, the oil pump and the cooler can still be kept full when the oil is cut off. Even if an empty section appears at the cut-off point, the empty section will directly enter the hydraulic oil tank after it is opened again, and there will be no empty suction of the oil pump or reverse suction of air at the cooler.

[0018] Preferably, the cooling device further comprises a first motor, wherein the first motor is used to supply power to the oil pump alone; and / or,

[0019] The cooling device also includes an oil temperature sensing unit and an alarm unit. The oil temperature sensing unit and the alarm unit are electrically connected. The oil temperature sensing unit can sense the oil temperature in the cooling device. When the oil temperature is higher than a preset temperature, the alarm unit can sound an alarm.

[0020] In this technical solution, by providing the first motor, the power of the oil pump can be increased, and the flow rate and flow velocity of the oil can be improved. By providing the oil temperature sensing unit and the alarm unit, when the oil in the cooling device is overheated, the on-site personnel can be notified in time to avoid further losses.

[0021] Preferably, the cooling device further comprises a filter, and the filter is located between the oil pump and the one-way valve.

[0022] In the technical solution, by providing a filter, it is possible to prevent particles in the oil path from clogging the one-way valve or the cooler.

[0023] Preferably, the oil pump comprises an oil outlet, the oil outlet is connected to the filter, and the oil load at the oil outlet is in the range of 0.7MP-0.9MP.

[0024] In the present technical solution, through the above arrangement, the stability of oil operation can be improved, the impact of oil on the cooler can be reduced, and the service life can be extended.

[0025] Preferably, the cooling device further comprises a heat dissipation fan, and the heat dissipation fan is used to supply air to the cooler.

[0026] In the present technical solution, by providing a cooling fan, the cooling effect of the cooler on the oil can be improved.

[0027] Preferably, the cooling device further comprises a second motor, and the second motor is used to supply power to the heat dissipation fan alone.

[0028] In the present technical solution, by providing a second motor, the operating power of the cooling fan can be increased, the rotation speed of the cooling fan can be increased, and the cooling effect of the cooler on the oil can be further improved.

[0029] A three-roller plate rolling machine comprises the cooling device as described above.

[0030] In the present technical solution, by providing the three-roll plate rolling machine, the situation of excessive oil temperature and alarm shutdown can be reduced, production efficiency can be improved, maintenance rate and maintenance cost can be reduced, the service life of the equipment seals of the three-roll plate rolling machine can be increased, and the equipment failure rate can be reduced.

[0031] The positive and progressive effects of the present invention are:

[0032] By providing the cooling device and placing the cooler after the oil pump, it is possible to avoid air mixing in the oil, reduce the oil suction resistance of the oil pump, and prevent the occurrence of empty suction that causes poor oil suction. Since the oil obtains power before entering the cooler, the flow rate of the oil in the cooler is accelerated, thereby improving the cooling effect. Furthermore, since the oil at the pump of the oil pump has impact force, a one-way valve is provided between the oil pump and the cooler to buffer the oil and prevent the oil from damaging the cooler. By providing the three-roll plate rolling machine, the situation of excessive oil temperature and alarm shutdown can be reduced, production efficiency can be improved, maintenance rate and maintenance cost can be reduced, the service life of the equipment seals of the three-roll plate rolling machine can be increased, and the equipment failure rate can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of the prior art.

[0034] Figure 2 It is a structural schematic diagram of an embodiment of the present invention.

[0035] Description of Reference Numerals

[0036] exist Figure 1 middle:

[0037] Cooler 1'

[0038] Cooling fan 2'

[0039] Filter 4'

[0040] Oil pump 5'

[0041] Stop valve 6'

[0042] Hydraulic oil tank 7'

[0043] Motor 8'

[0044] exist Figure 2 middle:

[0045] Cooler 1

[0046] Cooling fan 2

[0047] Check valve 3

[0048] Filter 4

[0049] Oil pump 5

[0050] Stop valve 6

[0051] Hydraulic oil tank 7

[0052] Fuel tank inlet 71

[0053] Fuel tank outlet 72

[0054] The first motor 81

[0055] The second motor 82 DETAILED DESCRIPTION

[0056] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0057] like Figure 2 As shown, this embodiment provides a cooling device, which includes a hydraulic oil tank 7, a cooler 1, an oil pump 5, and a one-way valve 3. The hydraulic oil tank 7, the oil pump 5, the one-way valve 3, and the cooler 1 are connected in sequence. The oil flows along the A direction in the cooling device.

[0058] In this way, placing the cooler 1 after the oil pump 5 can prevent air from mixing into the oil, reduce the oil suction resistance of the oil pump 5, and prevent the occurrence of empty suction that causes poor oil suction. Since the oil obtains power before entering the cooler 1, the flow rate of the oil in the cooler 1 is accelerated, improving the cooling effect. Furthermore, since the oil at the pump of the oil pump 5 has impact force, a one-way valve 3 is set between the oil pump 5 and the cooler 1 to buffer the oil and prevent the oil from damaging the cooler 1.

[0059] In this embodiment, the hydraulic oil tank 7 includes an oil tank outlet 72 and an oil tank inlet 71, and the oil tank outlet 72, the oil pump 5, the one-way valve 3, the cooler 1, and the oil tank inlet 71 are connected in sequence. In this way, the oil can circulate in and out of the hydraulic oil tank 7, reducing the cooling cost.

[0060] In this embodiment, the cooling device further comprises a stop valve 6, which is used to open or stop the flow of oil in the cooling device. In this way, the operation of the cooling device can be controlled with a relatively simple structure.

[0061] In this embodiment, the stop valve 6 is located between the cooler 1 and the oil tank inlet 71. In this way, the cut-off point of the oil flow can be between the cooler 1 and the oil tank inlet 71, so that the oil pump 5 and the cooler 1 can still be kept full when the oil is cut off. Even if there is an empty section at the cut-off point, the empty section will directly enter the hydraulic oil tank 7 after it is opened again, and the oil pump 5 will not be empty-sucked or reversely sucked into the air at the cooler 1.

[0062] In this embodiment, the cooling device further includes a first motor 81, and the first motor 81 is used to supply power to the oil pump 5 alone. In this way, the power of the oil pump 5 can be increased, and the flow rate and flow velocity of the oil can be increased.

[0063] In this embodiment, the cooling device further includes an oil temperature sensing unit and an alarm unit (not shown in the figure). The oil temperature sensing unit and the alarm unit are electrically connected. The oil temperature sensing unit can sense the oil temperature in the cooling device. When the oil temperature is higher than a preset temperature, the alarm unit can sound an alarm. In this way, when the oil in the cooling device is overheated, on-site personnel can be notified in time to avoid further losses. The specific installation and selection of the oil temperature sensing unit and the alarm unit refer to the existing technology and are determined according to the on-site conditions.

[0064] In this embodiment, the cooling device further comprises a filter 4, and the filter 4 is located between the oil pump 5 and the one-way valve 3. In this way, it is possible to prevent the oil path particles from clogging the one-way valve 3 or the cooler 1.

[0065] In this embodiment, the oil pump 5 includes an oil outlet, which is connected to the filter 4, and the oil load at the oil outlet ranges from 0.7MP to 0.9MP. In this way, the stability of oil operation can be improved, the impact of oil on the cooler 1 can be reduced, and the service life can be extended.

[0066] In this embodiment, the cooling device further comprises a heat dissipation fan 2, and the heat dissipation fan 2 is used to supply air to the cooler 1. In this way, the cooling effect of the cooler 1 on the oil can be improved.

[0067] In this embodiment, the cooling device further includes a second motor 82, which is used to supply power to the cooling fan 2 alone. In this way, the operating power of the cooling fan 2 can be increased, the speed of the cooling fan 2 can be increased, and the cooling effect of the cooler 1 on the oil can be further improved.

[0068] In this embodiment, the power of the first motor 81 and the second motor 82 are both 1000W. Compared with the situation where a single 1000W motor supplies power to the oil pump 5 and the cooling fan 2 at the same time, this embodiment can greatly improve the oil flow rate and the heat dissipation effect.

[0069] This embodiment also provides a three-roll plate rolling machine, which includes the cooling device as described above. In this way, the situation of over-high oil temperature and alarm shutdown can be reduced, production efficiency can be improved, maintenance rate and maintenance cost can be reduced, the service life of the equipment seal of the three-roll plate rolling machine can be increased, and the equipment failure rate can be reduced.

[0070] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A cooling device, comprising a hydraulic oil tank, a cooler, and an oil pump; characterized in that: The cooling device also includes a one-way valve; The hydraulic oil tank, the oil pump, the one-way valve and the cooler are connected in sequence.

2. The cooling device according to claim 1, characterized in that The hydraulic oil tank comprises an oil tank outlet and an oil tank inlet, and the oil tank outlet, the oil pump, the one-way valve, the cooler, and the oil tank inlet are connected in sequence.

3. The cooling device according to claim 2, characterized in that: The cooling device further comprises a stop valve, which is used to open or stop the flow of oil in the cooling device.

4. The cooling device according to claim 3, characterized in that The shut-off valve is located between the cooler and the oil tank inlet.

5. The cooling device according to claim 1, characterized in that: The cooling device further comprises a first motor, the first motor being used to supply power to the oil pump alone; and / or, The cooling device also includes an oil temperature sensing unit and an alarm unit. The oil temperature sensing unit and the alarm unit are electrically connected. The oil temperature sensing unit can sense the oil temperature in the cooling device. When the oil temperature is higher than a preset temperature, the alarm unit can sound an alarm.

6. The cooling device according to claim 1, characterized in that: The cooling device further includes a filter, and the filter is located between the oil pump and the one-way valve.

7. The cooling device according to claim 6, characterized in that The oil pump comprises an oil outlet, the oil outlet is connected to the filter, and the oil load at the oil outlet ranges from 0.7MP to 0.9MP.

8. The cooling device according to claim 1, characterized in that: The cooling device also includes a heat dissipation fan, and the heat dissipation fan is used to supply air to the cooler.

9. The cooling device according to claim 8, characterized in that The cooling device also includes a second motor, which is used to supply power to the heat dissipation fan alone.

10. A three-roller plate rolling machine, characterized in that: It comprises a cooling device as claimed in any one of claims 1 to 9.

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