阅读说明：本技术 螺旋内循环快速冷却液压油管 (Spiral internal circulation quick cooling hydraulic oil pipe ) 是由 孙艳 刘伟善 刘尔方 许海烽 徐冰 于 2021-10-25 设计创作，主要内容包括：本发明涉及一种螺旋内循环快速冷却液压油管,包括：内管,用于输送液压油；外管,套设在所述内管的外部,内管外壁与外管内壁之间形成两端封闭的环形腔体；以及导流叶片,所述导流叶片呈螺旋状设置在所述间隙内,形成螺旋流道；所述外管上设有入口和出口,所述入口用于通入冷却介质,所述出口上设置压力控制阀；还包括储气装置,所述储气装置的进气口与制冷装置的出风口连接,所述储气装置的出气口通过泵及连接管与所述外管的入口连接。本发明的向内、外管之间通入的冷却介质沿螺旋流道流动,增加了流动路径、提高了换热面积,增强了液压油管的散热效果。(The invention relates to a spiral internal circulation quick cooling hydraulic oil pipe, which comprises: the inner pipe is used for conveying hydraulic oil; the outer pipe is sleeved outside the inner pipe, and an annular cavity with two closed ends is formed between the outer wall of the inner pipe and the inner wall of the outer pipe; the guide vanes are spirally arranged in the gaps to form spiral flow channels; the outer pipe is provided with an inlet and an outlet, the inlet is used for introducing a cooling medium, and the outlet is provided with a pressure control valve; the air inlet of the air storage device is connected with the air outlet of the refrigerating device, and the air outlet of the air storage device is connected with the inlet of the outer tube through a pump and a connecting tube. According to the invention, the cooling medium introduced between the inner pipe and the outer pipe flows along the spiral flow channel, so that the flow path is increased, the heat exchange area is increased, and the heat dissipation effect of the hydraulic oil pipe is enhanced.)

1. The utility model provides a spiral inner loop cools off hydraulic pressure oil pipe fast which characterized in that includes:

an inner pipe (4) for conveying hydraulic oil;

the outer pipe (2) is sleeved outside the inner pipe (4), and an annular cavity with two closed ends is formed between the outer wall of the inner pipe (4) and the inner wall of the outer pipe (2);

the guide vanes (3) are spirally arranged in the gaps to form spiral flow channels (10);

an inlet (5) and an outlet are formed in the outer pipe (2), the inlet (5) is used for introducing cooling media, and a pressure control valve (9) is arranged on the outlet.

2. The helical internal circulation fast cooling hydraulic oil pipe as claimed in claim 1, wherein the structure of the pressure control valve (9) comprises: a valve port (91), a valve plate (92) and an adjusting screw (93);

a connecting sleeve (94) is arranged at the upper part of the valve port (91), and the upper end of the connecting sleeve (94) is in threaded fit with the adjusting screw (93);

the valve plate (92) covers the valve port (91), and the adjusting screw (93) is connected with the valve plate (92) through a spring element (95).

3. The spiral internal circulation quick cooling hydraulic oil pipe as claimed in claim 2, wherein a connecting column (96) is arranged on the upper surface of the valve plate (92), one end of the spring element (95) is connected with the connecting column (96), and the other end of the spring element is connected with the adjusting screw (93); the lower end of the connecting sleeve (94) is in sliding fit with the connecting column (96).

4. The spiral internal circulation rapid cooling hydraulic oil pipe according to claim 2, wherein the connecting sleeve (94) is installed above the valve port (91) through a supporting portion (98), a guide hole (981) is formed in the supporting portion (98), and a guide post (97) matched with the guide hole (981) is formed in the upper surface of the valve plate (92).

5. The spiral internal circulation quick cooling hydraulic oil pipe according to claim 1, further comprising an air storage device (8), wherein an air inlet (83) of the air storage device (8) is connected with an air outlet of a refrigeration device, and an air outlet of the air storage device (8) is connected with the inlet (5) of the outer pipe (2) through a pump (7) and a connecting pipe (6).

6. The helical internal circulation rapid cooling hydraulic oil pipe according to claim 5, wherein the gas storage device (8) comprises a gas storage bag (81), and a first heat insulating layer (82) wrapped outside the gas storage bag (81).

7. The spiral internal circulation quick cooling hydraulic oil pipe according to claim 1, wherein the inner side of the guide vane (3) is welded with the outer wall of the inner pipe (4), and the outer side of the guide vane (3) is welded with the inner wall of the outer pipe (2).

8. The spiral internal circulation fast cooling hydraulic oil pipe as claimed in claim 1, wherein the outer pipe (2) is externally coated with a second insulation layer (1).

9. The spiral internal circulation quick cooling hydraulic oil pipe according to claim 1, wherein the inner pipe (4), the outer pipe (2) and the guide vanes (3) are made of metal.

Technical Field

The invention relates to the technical field of heat dissipation, in particular to a spiral internal circulation quick cooling hydraulic oil pipe.

Background

When the hydraulic system works, the temperature of hydraulic oil is increased, the viscosity of the hydraulic oil is reduced, the compression ratio of the hydraulic system is reduced, the output pressure is reduced, the power of a front-end driving part is increased, and the overload risk is caused; in addition, the oxidation of hydraulic oil is intensified by high temperature, and the oil product is invalid.

In the prior art, the heat dissipation measures of the hydraulic oil pipe mainly include: the structure of the oil pipe is changed, and the heat dissipation purpose is achieved by increasing the flow area of the hydraulic oil, for example, the oil pipe is arranged into a spiral pipe structure; and secondly, a cooling fan is added to cool the oil pipe by air cooling. The change of the oil circuit structure not only easily affects the pipeline stress and shortens the service life, but also affects the stability of oil pressure control; in addition, the fan equipment is limited by an installation space, the heat dissipation effect is limited, and the noise and the energy consumption are high during operation.

Disclosure of Invention

The invention provides a spiral internal circulation quick cooling hydraulic oil pipe, aiming at improving the heat dissipation efficiency of the surface of the oil pipe and controlling the temperature of hydraulic oil within a reasonable range on the basis of not influencing the structure of an oil pipeline.

The technical scheme adopted by the invention is as follows:

a spiral internal circulation rapid cooling hydraulic oil pipe comprising:

the inner pipe is used for conveying hydraulic oil;

the outer pipe is sleeved outside the inner pipe, and an annular cavity with two closed ends is formed between the outer wall of the inner pipe and the inner wall of the outer pipe;

the guide vanes are spirally arranged in the gaps to form spiral flow channels;

the outer pipe is provided with an inlet and an outlet, the inlet is used for introducing cooling media, and the outlet is provided with a pressure control valve.

The pressure control valve has a structure including: a valve port, a valve plate and an adjusting screw; a connecting sleeve is arranged at the upper part of the valve port, and the upper end of the connecting sleeve is in threaded fit with the adjusting screw; the valve block covers on the valve port, the adjusting screw pass through the spring part with the valve block is connected.

The upper surface of the valve plate is provided with a connecting column, one end of the spring part is connected with the connecting column, and the other end of the spring part is connected with the adjusting screw; the lower end of the connecting sleeve is in sliding fit with the connecting column.

The connecting sleeve is arranged above the valve port through a supporting part, a guide hole is formed in the supporting part, and a guide pillar matched with the guide hole is arranged on the upper surface of the valve block.

The air inlet of the air storage device is connected with the air outlet of the refrigerating device, and the air outlet of the air storage device is connected with the inlet of the outer tube through a pump and a connecting tube.

The gas storage device comprises a gas storage bag and a first heat preservation layer wrapped outside the gas storage bag.

The inner side of the guide vane is welded with the outer wall of the inner pipe, and the outer side of the guide vane is welded with the inner wall of the outer pipe.

And a second heat-insulating layer is coated outside the outer pipe.

The inner pipe, the outer pipe and the guide vanes are all made of metal materials.

The invention has the following beneficial effects:

the cooling medium introduced between the inner pipe and the outer pipe can flow along the spiral flow channel, so that the flow path is increased, the heat exchange area is increased, and the heat dissipation effect is enhanced.

The pressure of the cooling medium in the flow channel is adjusted by adjusting the pretightening force of the control pressure valve, and the medium can keep a more compact contact effect with a contact surface in the flowing process by pressurization, so that the heat exchange efficiency is further improved; meanwhile, the pressure can be automatically controlled according to the parameters of the cooling medium, such as temperature, pressure and the like, so that the flowing stability of the medium is ensured.

The invention uses the cold air of the refrigerating device as a cooling medium, stores the cold air through the air storage device, can open the air pump to convey the cold air into the flow channel when needed, and has convenient use and high flexibility.

The structure of the inner pipe is not changed, and the hydraulic oil can stably flow along the inner pipe, so that the stability of oil pressure control is facilitated.

Drawings

Fig. 1 is a partial sectional structural schematic view of a hydraulic oil pipe according to an embodiment of the present invention.

FIG. 2 is a partial cross-sectional view of a hydraulic oil line of an embodiment of the present invention.

Fig. 3 is a schematic structural view of a closed state of a valve plate of the pressure control valve according to the embodiment of the present invention.

Fig. 4 is an exploded view of the pressure control valve according to the embodiment of the present invention.

Fig. 5 is a schematic structural view illustrating an opening state of a valve sheet of the pressure control valve according to the embodiment of the present invention.

FIG. 6 is a schematic view of a partially cut-away structure of an air storage device according to an embodiment of the present invention.

Fig. 7 is a schematic view of an overall installation structure of the embodiment of the present invention.

In the figure: 1. a second insulating layer; 2. an outer tube; 3. a guide vane; 4. an inner tube; 5. an inlet; 6. a connecting pipe; 7. a pump; 8. a gas storage device; 81. a gas storage bag; 82. a first insulating layer; 83. an air inlet; 9. a pressure control valve; 91. a valve port; 92. a valve plate; 93. adjusting screws; 94. connecting sleeves; 95. a spring member; 96. connecting columns; 98. a support portion; 981. a guide hole; 97. a guide post; 10. a spiral flow passage.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

The spiral internal circulation quick cooling hydraulic oil pipe of the embodiment, as shown in fig. 1 and 2, comprises:

an inner pipe 4 for conveying hydraulic oil;

the outer pipe 2 is sleeved outside the inner pipe 4, and an annular cavity with two closed ends is formed between the outer wall of the inner pipe 4 and the inner wall of the outer pipe 2;

the guide vanes 3 are spirally arranged in the gaps to form spiral flow channels 10; the outer pipe 2 is provided with an inlet 5 and an outlet, the inlet 5 is used for introducing cooling medium, and the outlet is provided with a pressure control valve 9.

Specifically, the inner side of the guide vane 3 is welded with the outer wall of the inner pipe 4, and the outer side of the guide vane 3 is welded with the inner wall of the outer pipe 2.

Specifically, the spiral flow passage 10 is closed at two ends of the outer tube 2 by end caps.

When the heat exchanger works, a cooling medium can flow along the spiral flow passage 10 between the inner pipe and the outer pipe, the spiral flow passage 10 increases a flow path, improves the heat exchange area, and enhances the heat dissipation of the inner pipe 4. And because the structure of the inner pipe 4 is not changed, the hydraulic oil can stably flow along the inner pipe 4, which is beneficial to the stability of oil pressure control.

As shown in fig. 3, 4 and 5, the pressure control valve 9 has a structure including: valve port 91, valve plate 92 and adjusting screw 93;

a connecting sleeve 94 is arranged at the upper part of the valve port 91, and the upper end of the connecting sleeve 94 is in threaded fit with the adjusting screw 93;

the valve plate 92 covers the valve port 91, and the adjusting screw 93 is connected to the valve plate 92 through a spring member 95.

The upper surface of valve block 92 is equipped with spliced pole 96, and spring element 95 one end is connected with spliced pole 96, and the other end is connected with adjusting screw 93, and the lower extreme and the spliced pole 96 sliding fit of adapter sleeve 94.

Specifically, a connecting sleeve 94 is mounted above the valve port 91 through a supporting portion 98, a guide hole 981 is formed in the supporting portion 98, and a guide pillar 97 matched with the guide hole 981 is arranged on the upper surface of the valve plate 92.

Specifically, an external thread is arranged on the outer wall of the adjusting screw 93, an internal thread is arranged at the upper end of the inner wall of the connecting sleeve 94, the adjusting screw 93 is screwed or unscrewed, and the spring element 95 provides a proper pretightening force for the valve plate 92, so that the valve plate 92 closes the valve port 91, and a proper pressure is provided for a cooling medium in the spiral flow channel 10.

During operation, the lower surface of the valve plate 92 is jacked up under the action of the cooling medium flowing through the spiral flow, the connecting column 96 extends into the connecting sleeve 94, and meanwhile, the guide column 97 moves upwards along the guide hole 981, so that the movement stability of the valve plate 92 is ensured. In the state shown in fig. 5, the valve port 91 is opened to discharge the heat-exchanged cooling medium.

The pressure of the cooling medium in the flow channel can be adjusted by adjusting the pretightening force of the pressure control valve 9, and the medium can keep a more close contact effect with a contact surface in the flowing process by pressurization, so that the heat exchange efficiency is further improved; meanwhile, the pressure can be automatically controlled according to the parameters of the cooling medium, such as temperature, pressure and the like, so that the stability of the flow is ensured.

The spiral internal circulation rapid cooling hydraulic oil pipe of this embodiment, as shown in fig. 6, further includes a gas storage device 8, an air inlet 83 of the gas storage device 8 is connected to an air outlet of the refrigeration device (the refrigeration system of the engineering machine is specifically an air conditioning compressor inside the engineering vehicle, and an outlet of the air conditioning compressor is communicated with the air inlet 83), and an air outlet of the gas storage device 8 is connected to the inlet 5 of the outer pipe 2 through a pump 7 and a connecting pipe 6. The connecting pipe 6 may be a corrugated hose.

As shown in fig. 7, the gas storage device 8 includes a gas storage bag 81, and a first heat insulating layer 82 wrapped outside the gas storage bag 81. The air storage bag 81 can be used for collecting cold air, and the first heat preservation layer 82 is used for maintaining the temperature of the cold air.

As shown in fig. 7, the outer pipe 2 is covered with a second insulating layer 1 to prevent the cold energy in the flow channel from being dissipated.

The application discloses quick cooling hydraulic pressure oil pipe of spiral inner loop is applicable to engineering machine tool, for example engineering vehicle's landing leg hydro-cylinder hydraulic oil system. The refrigerating device adopts an air conditioner in a vehicle cab, and is convenient to install and use and high in flexibility.

The utility model provides a spiral inner loop cools off hydraulic pressure oil pipe fast utilizes air conditioner air conditioning as coolant, utilizes gas storage device to store air conditioning, opens the air pump when needs, carries air conditioning to the runner, and air conditioning flows in spiral runner 10, with the inner tube heat transfer, and hydraulic oil heat dissipation cooling in the geminate transistors, and the air conditioning after the heat transfer is discharged from the outer tube export.

The foregoing is only a preferred embodiment of the present invention, it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.