A hydraulic device with a thermal management mechanism

Abstract

The present invention provides a hydraulic device with a thermal management mechanism, the hydraulic device includes a cylinder with a piston rod, and the hydraulic device also includes a thermal management mechanism for controlling the internal temperature of the cylinder; the thermal management mechanism includes a plurality of sleeve sections, a temperature sensor, a first air guide unit, a second air guide unit, an air guide fan and an air guide control unit; the sleeve is fixed to the outer surface of the cylinder through a support frame, and an air guide channel is formed between the sleeve and the cylinder; a temperature sensor is distributed in the air guide channel; the air guide fan is connected to the air inlet through an air guide duct; the first air guide unit is arranged along the axial direction of the piston rod; the second air guide unit is arranged at the air outlet; an air regulating valve is arranged on the air guide duct; the present invention ensures the safe and stable operation of the hydraulic device in a high-temperature environment, cooperates with the hot air circulation technology to improve the utilization efficiency of waste heat, and effectively saves energy.

Description

Technical Field

[0001] The invention relates to the technical field of waste heat utilization and thermal management of hydraulic devices, and in particular to a hydraulic device with a thermal management mechanism. Background Art

[0002] In the cement clinker production line, the kiln head clinker cooler is one of the key core equipment, and the hydraulic system is the core equipment that provides power for the cooler, and its working reliability is particularly important. Under the background of the national "dual carbon" strategy, the waste heat utilization efficiency of the kiln head is further improved. The flue gas of about 100°C from the outlet of the kiln head waste heat boiler is circulated back to the inlet of the blower of the kiln head clinker cooler, and enters the cooling cement clinker from the wind chamber under the grate bed of the cooler, thereby increasing the flue gas temperature entering the kiln head waste heat boiler. The existing hydraulic device is arranged in the wind chamber under the grate bed of the cooler. In the case of not using hot air circulation, the cooling air is the outdoor ambient air, and the ambient temperature of the hydraulic device is the same as the outdoor ambient temperature. After using hot air circulation, the ambient temperature of the hydraulic device is about 100°C, which brings severe tests to the internal sealing of the hydraulic device. Due to the increase in the ambient temperature, the heat will be transferred to the inside of the hydraulic device through the piston rod, cylinder and other metal parts of the hydraulic device, so that the temperature of the hydraulic oil increases, the internal gap becomes larger, and then the hydraulic device leaks oil, affecting the safe and stable operation of the production line.

[0003] Therefore, there is an urgent need in the prior art for a technical solution that can effectively control the temperature of the hydraulic device and ensure the safe and stable operation of the hydraulic device. Summary of the invention

[0004] In view of the difficulties in the prior art, the purpose of the present invention is to overcome the shortcomings of the above-mentioned technology and propose a hydraulic device with thermal management, small size, safety and reliability.

[0005] In order to solve the problems of the prior art, the present invention adopts the following technical solutions:

[0006] A hydraulic device with a thermal management mechanism, the hydraulic device includes a cylinder with a piston rod, and the hydraulic device also includes a control for controlling the temperature inside the cylinder; the thermal management mechanism includes a plurality of sleeves, a temperature sensor, a first air guide unit, a second air guide unit, an air guide fan and an air guide control unit; the sleeve is fixed to the outer surface of the cylinder through a support frame, and an air guide channel is formed between the sleeve and the cylinder; the air guide channel is distributed with temperature sensors;

[0007] The air guide fan is connected to the air inlets on both sides of the cylinder through the air guide pipe; the first air guide unit is arranged along the axial direction of the piston rod; the second air guide unit is arranged at the air outlet of the sleeve; the air guide pipe is provided with an air regulating valve; wherein:

[0008] The air guide control unit detects the temperature value of the temperature sensor in real time; when the temperature value of the temperature sensor exceeds a preset value; the air guide control unit remotely starts the air guide fan to send cold air into the air inlet through the air guide duct; at the same time, the air guide control unit adjusts the opening frequency of the air regulating valve according to the detected temperature value; cold air of different frequencies cools down the temperature inside the cylinder through the air guide channel, the first air guide unit and the second air guide unit respectively.

[0009] Furthermore, the first air guide unit is composed of spiral guide vanes; the spiral guide vanes are distributed in a sinusoidal shape along the axial direction of the piston rod.

[0010] Furthermore, the second air guide unit is a conical nozzle, and arc-shaped guide vanes are equidistantly arranged on the inner circumference of the nozzle; the curvature of the guide vanes is 10° to 40°.

[0011] Furthermore, the sleeve is made of high temperature resistant metal or non-metal material; each section of the sleeve is connected together by welding.

[0012] Furthermore, a heat insulation layer is provided outside the sleeve; the heat insulation layer is made of aerogel, rock wool, silicate or nano heat insulation material.

[0013] Beneficial Effects

[0014] 1. The present invention sets the first air guide unit on the piston rod and the second air guide unit on the air guide channel between the air outlet and the cylinder and the sleeve. This structure can quickly cool down the temperature inside the cylinder. At the same time, the air guide control unit monitors and drives the fan to use different frequencies to evenly cool down the cylinder to ensure the safety of the cylinder. The air guide control unit controls the working condition of the fan and the opening of the air inlet regulating valve according to the real-time temperature. The present invention ensures the safe and stable operation of the hydraulic device in a high-temperature environment, improves the efficiency of waste heat utilization with the hot air circulation technology, and effectively saves energy.

[0015] 2. The sleeve of the present invention is made of high-temperature resistant metal or non-metallic material, with a compact size. The heat insulation layer and the sleeve are integrally formed in sections, and aerogel, rock wool, silicate or nano-insulation materials are used for effective heat insulation. A guide device is arranged inside the sleeve to achieve uniform temperature control of the cylinder surface by ambient air. A temperature sensor is arranged inside the sleeve to detect the temperature of the space between the sleeve and the cylinder of the hydraulic device in real time. A conical nozzle is arranged at the end of the sleeve, and a guide plate is arranged inside. The spiral angle is 10° to 40°. The ejected ambient air further controls the heat conduction of the piston rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a hydraulic device with a thermal management mechanism according to the present invention.

[0017] Figure 2 The present invention is a schematic diagram of the structure of a guide vane in a nozzle of a hydraulic device with a thermal management mechanism.

[0018] Reference numerals:

[0019] 101 cylinder barrel; 102 air inlet; 103 air outlet; 104 piston rod;

[0020] 201 heat management mechanism; 202 sleeve; 203 temperature sensor; 204 first air guide unit; 241 spiral guide vane; 205 second air guide unit; 206 air guide fan; 207 support frame; 208 heat insulation layer; 209 air guide channel; 251 arc guide vane; 210 temperature sensor; 212 air guide pipe; 213 valve; 301 air guide control unit; DETAILED DESCRIPTION

[0021] The following is combined with Figure 1 , Attachment Figure 2 The present invention is described as follows:

[0022] like Figure 1 As shown, the present invention provides a hydraulic device with a thermal management mechanism, the hydraulic device includes a cylinder 101 with a piston rod 104, and the hydraulic device also includes a thermal management mechanism 201 for controlling the internal temperature of the cylinder 101; the thermal management mechanism 201 includes a plurality of sleeve sections 202, a temperature sensor 203, a first air guide unit 204, a second air guide unit 205, an air guide fan 206 and an air guide control module 301; the sleeve 202 is made of a high-temperature resistant metal or non-metallic material; the sleeve 202 is fixed to the outer surface of the cylinder 101 by a support frame 207, and each sleeve section 202 is connected together by welding; a thermal insulation layer 208 is provided outside the sleeve 202; the thermal insulation layer 208 is made of aerogel, rock wool, silicate or nano thermal insulation material.

[0023] An air guide channel 209 is formed between the sleeve 201 and the cylinder 102; an air inlet 102 and an air outlet 103 are arranged between the air guide channel 209 and the sleeve 201; the air guide fan 206 is connected to the air inlet 102 of the sleeve 201 through the air guide pipe 212; the first air guide unit 204 is arranged along the axial direction of the piston 104 rod; the first air guide unit 204 is composed of a spiral guide vane 241; the spiral guide vane 241 is sinusoidally distributed; the second air guide unit 205 is arranged at the air outlet 103 of the sleeve 201; the second air guide unit 205 is a conical nozzle, and arc-shaped guide vanes 251 are arranged equidistantly on the inner circumference of the nozzle; the arc of the guide vane 251 is 10° to 40°. The temperature sensor 210 is arranged and distributed inside the air guide channel 209; an air regulating valve 213 is arranged on the air guide pipe 212; wherein:

[0024] The air guide control unit 301 detects the temperature value of the temperature sensor 203 in real time; when the temperature value of the temperature sensor 203 exceeds a preset value; the air guide control module 301 remotely starts the air guide fan 206 to send cold air into the air inlet 102 through the air guide pipe 212; at the same time, the air guide control module 301 adjusts the opening frequency of the air regulating valve 213 according to the detected temperature value; cold air of different frequencies flows through the air guide channel 209, the first air guide unit 204 and the second air guide unit 205 respectively, cools down the temperature inside the cylinder (101), and takes away the heat in the cylinder (101) from the air outlet (103).

[0025] The implementation process of the present invention is as follows: the present invention is installed in the hot air environment of the wind chamber under the grate bed of the cement clinker cooler;

[0026] The fan 211 is arranged in an open space outside the cooler. The air inlet comes from the ambient air. The outlet is introduced into the air chamber under the grate bed of the cement clinker cooler through the air duct 212. The air inlet of the cylinder 202 of each group of hydraulic devices with thermal management mechanisms is connected to the air duct 212 in parallel. The fan 211 is started to send ambient air into the space between the sleeve 201 and the cylinder 101 of the hydraulic device. The air duct control unit 301 controls the temperature of the cylinder 101 uniformly, including:

[0027] A temperature sensor 210 is provided inside the sleeve 201 of each group of hydraulic devices with thermal management, and the detection signal is transmitted to the air guide control unit 301. According to the real-time temperature, the working condition of the air guide fan 206 and the opening of the air inlet regulating valve 213 are started to accurately control the temperature of the space where the cylinder of the hydraulic device is located, thereby ensuring the reliable and safe operation of the hydraulic device;

[0028] The temperature detection control module detects the temperature value of the temperature sensor 203 in real time; when the temperature value of the temperature sensor 203 exceeds the preset value; the air guide control module 301 remotely starts the air guide fan 206 to send cold air into the air inlet 102 through the air guide pipe 213; at the same time, the air guide control module adjusts the frequency of opening the air regulating valve 213 according to the detected temperature value; cold air of different frequencies flows through the air guide channel 210, the first air guide unit 204 and the second air guide unit 205 respectively, so as to prevent the hot air from the external circulation from being guided to the cylinder 101 and the internal temperature rising, and take away the heat of the cylinder 101 from the air outlet 103. That is:

[0029] The spiral guide vane accelerates the cold air in the air guide channel. The present invention can not only control the heat conduction of the piston rod 104 but also control the temperature of the cylinder through the first air guide unit 204; at the same time, the second air guide unit 205 quickly sprays out through the conical nozzle at the end under the action of the arc-shaped air guide vane, thereby quickly cooling the internal temperature of the cylinder.

[0030] Although the present invention has been described above, the present invention is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can make many modifications without departing from the purpose of the present invention, which are all within the protection of the present invention.

Claims

1. A hydraulic device with a thermal management mechanism, the hydraulic device comprising a cylinder (101) with a piston rod (104), characterized in that: The hydraulic device also includes a device (201) for controlling the internal temperature of the cylinder (101); the thermal management mechanism (201) includes a plurality of sleeve sections (202), a temperature sensor (203), a first air guide unit (204), a second air guide unit (205), an air guide fan (206) and an air guide control unit (301); the sleeve (202) is fixed to the outer surface of the cylinder (101) through a support frame (207), and an air guide channel (209) is formed between the sleeve (201) and the cylinder (102); the air guide channel (209 ) and the sleeve (201) are provided with an air inlet (102) and an air outlet (103); a temperature sensor (203) is distributed in the air guide channel (209); the air guide fan (206) is connected to the air inlet (102) of the sleeve (201) through an air guide pipe (212); the first air guide unit (204) is arranged along the axial direction of the piston (104) rod; the second air guide unit (205) is arranged at the air outlet (103) of the sleeve (201); an air regulating valve (213) is arranged on the air guide pipe (212); wherein: The air guide control unit (301) detects the temperature value of the temperature sensor (203) in real time; when the temperature value of the temperature sensor (203) exceeds a preset value; the air guide control unit (301) remotely starts the air guide fan (206) to send cold air into the air inlet (102) through the air guide pipe (213); at the same time, the air guide control unit adjusts the frequency of opening the air regulating valve (213) according to the detected temperature value; cold air of different frequencies cools down the temperature inside the cylinder (101) through the air guide channel (210), the first air guide unit 204 and the second air guide unit (205), and takes away the heat in the cylinder (101) from the air outlet (103).

2. A hydraulic device with a thermal management mechanism according to claim 1, characterized in that: The first air guide unit (204) is composed of spiral blades (241); the spiral blades (241) are distributed in a sinusoidal shape along the axial direction of the piston rod.

3. A hydraulic device with a thermal management mechanism according to claim 1, characterized in that: The second air guide unit (205) is a conical nozzle, and arc-shaped guide vanes (251) are arranged at equal intervals on the inner circumference of the nozzle; the guide vanes (251) have an arc angle of 10° to 40°.

4. A hydraulic device with a thermal management mechanism according to claim 1, characterized in that: The sleeve (202) is made of a high-temperature resistant metal or non-metal material; each section of the sleeve (202) is connected together by welding.

5. A hydraulic device with a thermal management mechanism according to any one of claims 1 to 4, characterized in that: A heat insulation layer (208) is provided outside the sleeve (202); the heat insulation layer (208) is made of aerogel, rock wool, silicate or nano heat insulation material.

Images