Hydraulic pump station with self-monitoring unit

Abstract

The hydraulic pump station with the self-monitoring unit is applied to the field of hydraulic pumps and comprises a hydraulic pump station body, a temperature sensor is fixedly connected to the inner wall of an oil tank of the hydraulic pump station body, an irradiation lamp is fixedly connected to the inner wall, right facing the temperature sensor, of the oil tank, and the temperature sensor comprises a back plate. According to the hydraulic pump station, the temperature sensor is additionally arranged on the basis of an existing hydraulic pump station to monitor the temperature of hydraulic oil in real time, the length of a light area is measured through the light blocking effect of the mercury column, so that a regulation and control signal is obtained, and the refrigeration effect of the semiconductor refrigeration piece is regulated according to the regulation and control signal; and the size of the heat exchange area is adjusted by adjusting and controlling the telescopic length of the telescopic heat exchange cylinder, so that the cooling effect at the high temperature is effectively improved, the icing problem in the low-temperature weather can be effectively avoided, and the problem that existing heat dissipation is prone to being affected by the external environment is effectively solved.

Description

Technical Field

[0001] The present invention relates to a hydraulic pump station with a self-monitoring unit, in particular to a hydraulic pump station with a self-monitoring unit applied to the field of hydraulic pumps. Background Art

[0002] The hydraulic pump station is the power source in the hydraulic system, which is mainly responsible for converting mechanical energy into hydraulic energy and providing power for the entire hydraulic system. It is mainly composed of hydraulic pump group, temperature control component, oil tank component, accumulator and filter component. Among them, the temperature control component is the most important part, which is mainly used to cool the hydraulic oil and prevent the oil from deteriorating due to high temperature. However, the heat dissipation effect of the existing temperature control component is not good.

[0003] In order to solve the problem of poor heat dissipation of hydraulic oil, a certain hydraulic pump station in the market adopts air cooling and water cooling design, which has a certain market share.

[0004] The specification of Chinese patent CN201910994550.2 discloses a water evaporation type physical heat dissipation hydraulic pump station. The hydraulic pump uses the principle of water evaporation and heat absorption to dissipate heat for the hydraulic pump station, and directly exchanges heat with the oil in the oil tank through a heat pipe, which greatly improves the efficiency of heat exchange and can dissipate heat for the hydraulic oil in time. It is not easy to cause the equipment to slow down and become weak, and it is not easy to affect the sealing performance and lubrication performance. It is not easy to damage important hydraulic components. It has a simple structure, and only pure water is needed for consumables. It has low cost, good heat dissipation effect, and is convenient for later maintenance.

[0005] The specification of Chinese patent CN201911105166.9 discloses a self-heating safety oil tank for a hydraulic pump station. The oil tank dissipates heat outward by itself through a variety of different ways. One is to convert heat into kinetic energy of the heated movement of the first heat sink, the second heat sink and the third heat sink; the second is to dissipate heat by partially evaporating the liquid contained in cavity one, cavity two and cavity three; the third is to transfer heat to the fins and then transfer the heat to the air over a large area by the fins. The oil tank is easy to perform efficient self-heating, which makes it less likely to cause unnecessary damage due to excessive temperature, and helps to improve work efficiency.

[0006] Existing hydraulic oil pumps still rely on air cooling or water cooling to achieve heat transfer, which can achieve good heat dissipation effect under stable and suitable external ambient temperature. However, in hot summer and cold winter, the disadvantages of water cooling and air cooling are reflected. Water will freeze in the low temperature environment in winter, thereby affecting the normal heat dissipation function. In hot summer, the effect of heat dissipation relying on cooling fins is limited. Summary of the invention

[0007] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is to reduce the influence of the external environment temperature on the cooling of the hydraulic oil.

[0008] In order to solve the above problems, the present invention provides a hydraulic pump station with a self-monitoring unit, including a hydraulic pump station body, a temperature sensor is fixedly connected to the inner wall of the oil tank of the hydraulic pump station body, and an irradiation lamp is fixedly connected to the inner wall of the oil tank facing the temperature sensor, the temperature sensor includes a back plate, and a photosensitive sensor is fixedly connected to the side wall of the back plate, a mercury thermometer is fixedly connected to the outer surface of the photosensitive sensor, the temperature sensor includes a light zone length measurement module, a signal conversion module and a control module electrically connected to the photosensitive sensor, a cooling box is fixedly connected to the upper end of the oil tank of the hydraulic pump station body, and a heat dissipation port is opened in the middle of the upper end of the cooling box, both side walls of the cooling box are connected to oil pipes connected to the oil tank, and an oil pump connected to the oil pipe is installed inside the oil tank, and the upper inner wall of the cooling box is fixedly connected to A telescopic heat exchange cylinder is connected to the heat dissipation port, and the inner wall of the telescopic heat exchange cylinder is fixedly connected with a plurality of semiconductor refrigeration plates electrically connected to the control module, the upper inner wall of the telescopic heat exchange cylinder is fixedly connected with two symmetrically distributed suspension rods, and the lower ends of the two suspension rods are fixedly connected with a suspension ring at the same time, the middle part of the suspension ring is fixedly inlaid with a double-sided electromagnet electrically connected to the control module, and the bottom of the telescopic heat exchange cylinder is fixedly connected with a magnetic pad 1 that magnetically repels the double-sided electromagnet, an insulation sleeve is also fixedly connected between the suspension ring and the bottom of the telescopic heat exchange cylinder, and the magnetic pad 1 is located inside the insulation sleeve, a magnetic pad 2 is slidably connected between the two suspension rods, and the magnetic pad 2 also magnetically repels the double-sided electromagnet, the upper side wall of the magnetic pad 2 is fixedly connected with a bracket, and the upper end of the bracket is fixedly connected with a protective cover matching the heat dissipation port.

[0009] In the above-mentioned hydraulic pump station with a self-monitoring unit, semiconductor refrigeration technology is used to cool the hydraulic oil, which effectively reduces the impact of the external environment on the cooling effect and adaptively cools the hydraulic oil according to temperature changes.

[0010] As a further improvement of the present application, the light emitted by the irradiation lamp covers the entire mercury thermometer, the top of the mercury thermometer is set as the measurement starting point a, and the mercury liquid level inside the mercury thermometer is set as the measurement end point b. The light emitted by the irradiation lamp irradiates the mercury thermometer, and the light is projected onto the photosensor through the glass tube of the mercury thermometer. The light is blocked when passing through the mercury column, so that the length of the light zone that the photosensor can detect is from point a to point b. The change in the hydraulic oil temperature will cause the mercury column to rise and fall, and then change the distance between points a and b. The light zone length measurement module senses the change in the hydraulic oil temperature by measuring the distance between points a and b, and the signal conversion module converts the measured distance signal into a current signal. The control module then controls the cooling effect of the semiconductor refrigeration plate according to the size of the current signal, thereby achieving the purpose of adaptive cooling according to the hydraulic oil temperature.

[0011] As a further improvement of the present application, the telescopic heat exchange cylinder includes a plurality of exposed sections and hidden sections, and the plurality of exposed sections and hidden sections are alternately fixedly connected, the semiconductor refrigeration plate is installed on the inner wall of the exposed section, and an opening connected to the heat dissipation port is opened in the middle of the top exposed section. The combination of the exposed section and the hidden section can realize the change of the length of the telescopic heat exchange cylinder. In the initial state, the exposed sections are stacked together, and the hidden sections are hidden by the exposed sections. When efficient cooling is performed, the hidden sections are stretched out by the exposed sections, thereby increasing the heat exchange area with the hydraulic oil, thereby effectively improving the cooling effect.

[0012] As a further improvement of the present application, the hidden section includes a heat transfer layer, and the inner wall of the heat transfer layer is fixedly inlaid with an embedded layer. The heat transfer layer absorbs the cold of the exposed section and exchanges heat with the hydraulic oil, thereby increasing the heat exchange area, and the embedded layer acts as an internal support, allowing the heat transfer layer to be hidden, folded or stretched as the telescopic heat exchange cylinder is extended or retracted.

[0013] As another improvement of the present application, the exposed section adopts a hard thermal conductive material, the heat transfer layer adopts a flexible thermal conductive material, and the embedded layer adopts an elastic thermal conductive material. The function of the heat transfer layer is to transfer the cold of the exposed section, and then participate in the cooling work of the heat exchange with the hydraulic oil, so as to effectively improve the cooling effect, and the embedded layer plays the role of supporting the heat transfer layer, allowing the heat transfer layer to be folded, hidden and stretched.

[0014] As another improvement of the present application, the thermal insulation sleeve is made of a temperature-resistant elastic material, and a magnetic insulation layer is bonded to the inner wall of the thermal insulation sleeve. The function of the thermal insulation sleeve is to protect the magnetic pad 1 from the influence of the heat emitted by the semiconductor refrigeration plate, and also to prevent the magnetic field generated by the magnetic pad 1 from affecting the semiconductor refrigeration plate. In addition, the thermal insulation sleeve plays the role of resetting the telescopic heat exchange tube so that the telescopic heat exchange tube can be freely extended and retracted.

[0015] To summarize, by adding a temperature sensor to the existing hydraulic pump station to monitor the temperature of the hydraulic oil in real time, the light-blocking effect of the mercury column is used to measure the length of the light zone to obtain a control signal, and the refrigeration effect of the semiconductor refrigeration plate is adjusted according to the control signal, thereby achieving the purpose of adaptive cooling following the hydraulic oil temperature, and adjusting the size of the heat exchange area by adjusting the telescopic length of the telescopic heat exchange cylinder, thereby effectively improving the cooling effect under high temperature, and effectively avoiding the problem of icing in low temperature weather, effectively solving the problem that the existing heat dissipation is easily affected by the external environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional diagram of the first embodiment of the present application; Figure 2 This is a schematic diagram of the installation of a temperature sensor and an irradiation lamp according to the first embodiment of the present application; Figure 3 This is a working schematic diagram of a temperature sensor and an irradiation lamp according to the first embodiment of the present application; Figure 4 This is a front view of the telescopic heat exchange cylinder before deformation according to the first embodiment of the present application; Figure 5 This is a front view of the telescopic heat exchange tube after deformation according to the first embodiment of the present application; Figure 6 This is a three-dimensional diagram of the telescopic heat exchange cylinder before deformation according to the first embodiment of the present application; Figure 7 This is a three-dimensional diagram of the deformed telescopic heat exchange cylinder according to the second embodiment of the present application; Figure 8 for Figure 5 A magnified view of the structure at center A; Fig. 9 This is a cross-sectional view of the telescopic heat exchange tube of the first embodiment of the present application before deformation; Fig.10 This is a cross-sectional view of the deformed telescopic heat exchange tube of the second embodiment of the present application.

[0017] Description of the numbers in the figure: 1 hydraulic pump station body, 2 temperature sensor, 201 back plate, 202 photosensor, 203 mercury thermometer, 3 irradiation lamp, 4 cooling box, 401 heat dissipation port, 5 oil pipe, 6 telescopic heat exchange cylinder, 601 exposed section, 6011 opening, 602 hidden section, 6021 heat transfer layer, 6022 embedded layer, 7 suspension rod, 8 lifting ring, 9 double-sided electromagnet, 10 magnetic pad one, 11 insulation sleeve, 12 magnetic pad two, 13 bracket, 14 protective cover, 15 semiconductor refrigeration sheet. DETAILED DESCRIPTION

[0018] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0019] The first implementation method: Figure 1 , 2 and Figure 3As shown, it includes a hydraulic pump station body 1, a temperature sensor 2 is fixedly connected to the inner wall of the oil tank of the hydraulic pump station body 1, and an irradiation lamp 3 is fixedly connected to the inner wall of the oil tank facing the temperature sensor 2, the temperature sensor 2 includes a back plate 201, and a photosensitive sensor 202 is fixedly connected to the side wall of the back plate 201 (the specific structure and working principle are well-known technologies for technicians in the relevant field, and the specific model is selected according to actual needs, which will not be described in detail here), and a mercury thermometer 203 is fixedly connected to the outer surface of the photosensitive sensor 202. The working state of the mercury thermometer 203 is stable, and it is less affected by external environmental factors. The measured hydraulic oil temperature is more accurate. The temperature sensor 2 includes a light zone length measurement module, a signal conversion module and a control module electrically connected to the photosensitive sensor 202. The light emitted by the irradiation lamp 3 covers the entire mercury thermometer 203. The uppermost end of the mercury thermometer 203 is set as a measurement starting point a, and the mercury liquid level inside the mercury thermometer 203 is set as a measurement end point b. The light emitted by the irradiation lamp 3 irradiates To the mercury thermometer 203, the light is projected onto the photosensor 202 through the glass tube of the mercury thermometer 203, and the light is blocked when passing through the mercury column, so that the light zone length that the photosensor 202 can detect is from point a to point b, and the change of the hydraulic oil temperature will cause the mercury column to rise and fall, thereby changing the distance between points a and b. The light zone length measurement module senses the change of the hydraulic oil temperature by measuring the distance between points a and b, and the signal conversion module converts the measured distance signal into a current signal. The control module then controls the cooling effect of the semiconductor refrigeration plate 15 according to the size of the current signal, thereby achieving the purpose of adaptive cooling according to the hydraulic oil temperature. The upper end of the oil tank of the hydraulic pump station body 1 is fixedly connected with a cooling box 4, and a heat dissipation port 401 is opened in the middle of the upper end of the cooling box 4. The side walls on both sides of the cooling box 4 are connected with an oil pipe 5 connected to the oil tank, and an oil pump connected to the oil pipe 5 is installed inside the oil tank (the specific connection structure and working principle are well-known technologies for technicians in the relevant field and will not be described in detail here); Fig. 9 , 10It is shown that the upper inner wall of the cooling box 4 is fixedly connected with a telescopic heat exchange tube 6 connected to the heat dissipation port 401, and the inner wall of the telescopic heat exchange tube 6 is fixedly connected with a plurality of semiconductor refrigeration plates 15 electrically connected to the control module (the specific model is selected according to actual needs), the upper inner wall of the telescopic heat exchange tube 6 is fixedly connected with two symmetrically distributed suspension rods 7, and the lower ends of the two suspension rods 7 are fixedly connected with a hanging ring 8 at the same time, and the middle part of the hanging ring 8 is fixedly inlaid with a double-sided electromagnet 9 electrically connected to the control module (the specific model is selected according to actual needs), the upper and lower surfaces of the double-sided electromagnet 9 both generate magnetism, so as to repel the magnetic pad 1 10 and the magnetic pad 2 12, and the bottom of the telescopic heat exchange tube 6 is fixedly connected with a magnetic pad 10 that magnetically repels the double-sided electromagnet 9, and there is also a fixed connection between the hanging ring 8 and the bottom of the telescopic heat exchange tube 6. The thermal insulation sleeve 11 is made of a temperature-resistant elastic material (polyurethane elastic material is preferred, and other materials can also be selected according to actual needs), and the inner wall of the thermal insulation sleeve 11 is bonded with a magnetic insulation layer. The function of the thermal insulation sleeve 11 is to protect the magnetic pad 10 from the influence of the heat emitted by the semiconductor refrigeration plate 15, and also to prevent the magnetic field generated by the magnetic pad 10 from affecting the semiconductor refrigeration plate 15. In addition, the thermal insulation sleeve 11 plays a role in resetting the telescopic heat exchange tube 6 so that the telescopic heat exchange tube 6 can be freely extended and retracted, and the magnetic pad 10 is located inside the thermal insulation sleeve 11, and a magnetic pad 2 12 is slidably connected between the two suspension rods 7 at the same time, and the magnetic pad 2 12 also magnetically repels the double-sided electromagnet 9, and the upper end side wall of the magnetic pad 2 12 is fixedly connected to a bracket 13, and the upper end of the bracket 13 is fixedly connected to a protective cover 14 matching the heat dissipation port 401.

[0020] The second implementation method: Figure 4 , 5 , 6 and Figure 7As shown, the telescopic heat exchange cylinder 6 includes a plurality of exposed sections 601 and hidden sections 602, the hidden sections 602 include a heat transfer layer 6021, and the inner wall of the heat transfer layer 6021 is fixedly inlaid with an embedded layer 6022, the heat transfer layer 6021 absorbs the cold of the exposed section 601 and exchanges heat with the hydraulic oil, thereby increasing the heat exchange area, and the embedded layer 6022 plays the role of internal support, so that the heat transfer layer 6021 can be hidden, folded or stretched as the telescopic heat exchange cylinder 6 is extended and retracted, and the plurality of exposed sections 601 and the hidden sections 602 are alternately fixedly connected, and the semi-conductive The cooling fin 15 is installed on the inner wall of the exposed section 601. The middle of the uppermost exposed section 601 is provided with an opening 6011 connected to the heat dissipation port 401. The combination of the exposed section 601 and the hidden section 602 can realize the change of the length of the telescopic heat exchange cylinder 6. In the initial state, the exposed sections 601 are stacked together, and the hidden section 602 is hidden by the exposed section 601. When high-efficiency cooling is performed, the hidden section 602 is stretched out by the exposed section 601, thereby increasing the heat exchange area with the hydraulic oil, thereby effectively improving the cooling effect. Figure 8 As shown, the exposed section 601 adopts a hard thermal conductive material (preferably a metal material, and other materials can also be selected according to actual needs), the heat transfer layer 6021 adopts a flexible thermal conductive material (preferably a silicone material, and other materials can also be selected according to actual needs), and the embedded layer 6022 adopts an elastic thermal conductive material (preferably a polyurethane elastic material, and other materials can also be selected according to actual needs). The function of the heat transfer layer 6021 is to transfer the cold of the exposed section 601, and then participate in the cooling work of the heat exchange with the hydraulic oil, so as to effectively improve the cooling effect, and the embedded layer 6022 supports the heat transfer layer 6021, allowing the heat transfer layer 6021 to be folded, hidden and stretched.

[0021] The working principle of this scheme is as follows: after the hydraulic oil is filtered and flows back to the oil tank, the mercury thermometer 203 measures the temperature of the hydraulic oil. The mercury column rises with the increase of temperature and falls with the decrease of temperature. The light emitted by the irradiation lamp 3 irradiates the mercury thermometer 203, and the light is projected onto the photosensitive sensor 202 through the glass tube of the mercury thermometer 203. The light is blocked when passing through the mercury column. In this way, the light zone length that the photosensitive sensor 202 can detect is from point a to point b. The change of hydraulic oil temperature will cause the mercury column to rise and fall, and then change the distance between points a and b. The light zone length measurement module senses the change of hydraulic oil temperature by measuring the distance between points a and b. The signal conversion module converts the measured distance signal into a current signal. The control module then adjusts the power-on current of the semiconductor refrigeration plate 15 according to the current signal. When the distance between points a and b increases, The current of the semiconductor refrigeration plate 15 decreases, and when the distance between points ab decreases, the current of the semiconductor refrigeration plate 15 increases, thereby realizing adaptive cooling of the hydraulic oil. The control module simultaneously controls the current of the double-sided electromagnet 9. Similarly, when the distance between points ab increases, the current of the double-sided electromagnet 9 decreases, and when the distance between points ab decreases, the current of the double-sided electromagnet 9 increases. The magnetic force generated by the double-sided electromagnet 9 repels magnetic pad 10 and magnetic pad 2 12, and the protective cover 14 is opened upward to allow the heat generated by the semiconductor refrigeration plate 15 to dissipate during operation, and the hidden section 602 is pulled out by the exposed section 601 to participate in the heat exchange with the hydraulic oil. Part of the cold energy generated by the semiconductor refrigeration plate 15 is transferred to the exposed section 601, and part is transferred to the hidden section 602. This can increase the heat exchange area, thereby effectively improving the cooling effect.

[0022] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A hydraulic pump station with a self-monitoring unit, characterized in that: The invention comprises a hydraulic pump station body (1), wherein the inner wall of an oil tank of the hydraulic pump station body (1) is fixedly connected to a temperature sensor (2), and the inner wall of the oil tank directly facing the temperature sensor (2) is fixedly connected to an irradiation lamp (3), the temperature sensor (2) comprises a back plate (201), and a side wall of the back plate (201) is fixedly connected to a photosensor (202), the outer surface of the photosensor (202) is fixedly connected to a mercury thermometer (203), and the temperature sensor (2) comprises a light source connected to the photosensor (201). 2) an optical zone length measuring module, a signal conversion module and a control module which are electrically connected, wherein the upper end of the oil tank of the hydraulic pump station body (1) is fixedly connected to a cooling box (4), and a heat dissipation port (401) is provided in the middle of the upper end of the cooling box (4), both side walls of the cooling box (4) are connected to an oil pipe (5) connected to the oil tank, and an oil pump connected to the oil pipe (5) is installed inside the oil tank, and a telescopic heat exchange cylinder (6) connected to the heat dissipation port (401) is fixedly connected to the inner wall of the upper end of the cooling box (4) , and the inner wall of the telescopic heat exchange cylinder (6) is fixedly connected to a plurality of semiconductor refrigeration sheets (15) electrically connected to the control module, the inner wall of the upper end of the telescopic heat exchange cylinder (6) is fixedly connected to two symmetrically distributed suspension rods (7), and the lower ends of the two suspension rods (7) are simultaneously fixedly connected to a suspension ring (8), the middle of the suspension ring (8) is fixedly inlaid with a double-sided electromagnet (9) electrically connected to the control module, and the bottom of the telescopic heat exchange cylinder (6) is fixedly connected to a magnetic pad (15) that magnetically repels the double-sided electromagnet (9) 10), a thermal insulation sleeve (11) is fixedly connected between the hanging ring (8) and the bottom of the telescopic heat exchange tube (6), and the first magnetic pad (10) is located inside the thermal insulation sleeve (11), and a second magnetic pad (12) is slidably connected between the two hanging rods (7), and the second magnetic pad (12) also magnetically repels the double-sided electromagnet (9), and the upper end side wall of the second magnetic pad (12) is fixedly connected to a bracket (13), and the upper end of the bracket (13) is fixedly connected to a protective cover (14) matching the heat dissipation port (401).

2. A hydraulic pump station with a self-monitoring unit according to claim 1, characterized in that: The light emitted by the irradiation lamp (3) covers the entire mercury thermometer (203), the uppermost end of the mercury thermometer (203) is set as a measurement starting point a, and the mercury liquid level inside the mercury thermometer (203) is set as a measurement end point b.

3. A hydraulic pump station with a self-monitoring unit according to claim 1, characterized in that: The telescopic heat exchange cylinder (6) comprises a plurality of exposed sections (601) and hidden sections (602), and the plurality of exposed sections (601) and hidden sections (602) are alternately fixedly connected, the semiconductor cooling plate (15) is installed on the inner wall of the exposed section (601), and an opening (6011) connected to the heat dissipation port (401) is provided in the middle of the uppermost exposed section (601).

4. A hydraulic pump station with a self-monitoring unit according to claim 3, characterized in that: The hidden section (602) comprises a heat transfer layer (6021), and an embedded layer (6022) is fixedly inlaid on the inner wall of the heat transfer layer (6021).

5. A hydraulic pump station with a self-monitoring unit according to claim 4, characterized in that: The exposed section (601) is made of a hard thermal conductive material, the heat transfer layer (6021) is made of a flexible thermal conductive material, and the embedded layer (6022) is made of an elastic thermal conductive material.

6. A hydraulic pump station with a self-monitoring unit according to claim 1, characterized in that: The thermal insulation sleeve (11) is made of a temperature-resistant elastic material, and a magnetic isolation layer is bonded to the inner wall of the thermal insulation sleeve (11).

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