Cooling system of hydraulic vibration device of crystallizer

Abstract

The invention provides a cooling system for a hydraulic vibration device of a crystallizer, which is used for cooling hydraulic oil in an oil circulation pipeline formed by a bidirectional hydraulic pump and a servo hydraulic cylinder in the hydraulic vibration device of the crystallizer, and comprises a hydraulic oil tank, a cooling circulation pipe, a liquid supplementing pipe and a liquid returning pipe, an inlet and an outlet of the cooling circulating pipe are both communicated with the hydraulic oil tank, and a circulating cooling pump set and a heat exchanger are arranged on the cooling circulating pipe; an inlet of the liquid supplementing pipe is communicated with the cooling circulating pipe at an outlet of the circulating cooling pump set, and an outlet of the liquid supplementing pipe is communicated with the two-way hydraulic pump through an oil liquid circulating pipeline; an inlet of the liquid return pipe is communicated with the two cavities of the servo hydraulic cylinder through the flushing and cooling assembly, and an outlet of the liquid return pipe is communicated with the hydraulic oil tank. The problem that an existing servo direct-drive crystallizer hydraulic vibration device is not provided with an independent cooling system can be solved, and the requirement for continuous operation of the hydraulic vibration device in the high-frequency and high-temperature environment is met.

Description

Technical Field

[0001] The invention relates to the technical field of continuous casting crystallizer vibration, and in particular to a cooling system of a crystallizer hydraulic vibration device. Background Art

[0002] The mold hydraulic vibration system is a core component of a continuous casting machine. Molten steel solidifies inside the mold to form a strand. The mold is fixed to the vibrating frame and reciprocates with it. The mold's vibration acts as a mold release mechanism, preventing the strand from sticking and causing cracking or breakout, while also improving its surface quality. The quality of the strand and the proper operation of the equipment are directly related to the smoothness, accuracy, and waveform of the mold vibration.

[0003] In the development history of continuous casting machines, there are three main types of mold vibration drive devices, namely:

[0004] 1. Variable frequency motor with camshaft drive, commonly known as mechanical vibration: its advantages are simple structure and low cost, its disadvantages are low control accuracy, only the vibration frequency is adjustable, the amplitude and vibration waveform are not adjustable, the mechanical clearance is large, and the structure is easy to wear.

[0005] 2. Hydraulic servo vibration: Its advantage is that it uses electro-hydraulic servo valves to control the cylinder to achieve sinusoidal and non-sinusoidal vibrations, and can easily achieve online adjustment and monitoring of amplitude, frequency and waveform. Its disadvantage is that due to the use of electro-hydraulic servo valves, high requirements are placed on oil cleanliness. At the same time, it needs to be equipped with a large hydraulic pump station system and piping system, which takes up a lot of space, so the construction, operation and maintenance costs are high.

[0006] 3. Servo electric cylinder drive: Using a servo electric cylinder to directly drive the mold vibrating table to achieve sinusoidal and non-sinusoidal vibrations has the advantages of low cost, easy equipment maintenance, and no pollution. Its disadvantages are that the lead screw has poor impact resistance, is easily worn, and has a short lifespan. The initial installation cost is low, but the subsequent maintenance and spare parts costs are huge.

[0007] The existing servo direct-drive crystallizer hydraulic vibration device does not have a separate cooling system, and generates a lot of heat under continuous and uninterrupted working conditions, which affects the life and performance of system components. Summary of the Invention

[0008] The purpose of the present invention is to provide a cooling system for a crystallizer hydraulic vibration device, which meets the requirements of uninterrupted continuous operation under high frequency and high temperature environment, and ensures that the temperature of the hydraulic vibration device and the oil are within a reasonable range.

[0009] The technical objectives of the present invention are mainly achieved through the following technical solutions:

[0010] The present invention provides a cooling system for a crystallizer hydraulic vibration device, which is used to cool the hydraulic oil in an oil circulation pipeline formed by a bidirectional hydraulic pump and a servo hydraulic cylinder in the crystallizer hydraulic vibration device. The cooling system includes:

[0011] Hydraulic oil tank;

[0012] A cooling circulation pipe, the inlet and outlet of which are both connected to the hydraulic oil tank, and the cooling circulation pipe is provided with a circulating cooling pump group and a heat exchanger;

[0013] a fluid infusion pipe, the inlet of which is connected to the cooling circulation pipe at the outlet of the circulating cooling pump group, and the outlet of which is connected to the bidirectional hydraulic pump through the oil circulation pipeline;

[0014] A liquid return pipe, the inlet of which is connected to the two chambers of the servo hydraulic cylinder through a flushing cooling component, and the outlet of which is connected to the hydraulic oil tank.

[0015] In a preferred embodiment of the present invention, the oil circulation pipeline includes:

[0016] a first oil pipe connected between the bidirectional hydraulic pump and the rod chamber of the servo hydraulic cylinder;

[0017] a second oil pipe connected between the bidirectional hydraulic pump and the rodless chamber of the servo hydraulic cylinder;

[0018] The outlet of the fluid replenishing pipe is respectively connected to the first oil pipe and the second oil pipe through two branch pipes.

[0019] In a preferred embodiment of the present invention, the two branch pipes connected to the outlet end of the fluid infusion pipe are both provided with a one-way valve, and the hydraulic oil in the fluid infusion pipe flows to the first oil pipe and the second oil pipe through the one-way valve.

[0020] In a preferred embodiment of the present invention, pressure sensors are provided before and after the one-way valve.

[0021] In a preferred embodiment of the present invention, an accumulator is provided on the fluid infusion tube.

[0022] In a preferred embodiment of the present invention, the flushing and cooling assembly has a first oil port and a second oil port and a third oil port that can be switched and connected to the first oil port, the inlet of the return pipe is connected to the first oil port, and the second oil port and the third oil port are respectively connected to the two chambers of the servo hydraulic cylinder through oil pipes.

[0023] In a preferred embodiment of the present invention, the inlet of the liquid return pipe is connected to the first oil port, the oil drain port on the bidirectional hydraulic pump, and the oil drain port on the servo hydraulic cylinder through three branch pipelines.

[0024] In a preferred embodiment of the present invention, a safety pipe is connected between the first oil pipe and the second oil pipe, and a first safety valve is provided on the safety pipe.

[0025] In a preferred embodiment of the present invention, the bidirectional hydraulic pump is connected to a servo motor for driving the rotation thereof, and the servo motor is connected to a first cooling water pipe.

[0026] In a preferred embodiment of the present invention, the circulating cooling pump group has two hydraulic pumps arranged in parallel, the cooling circulation pipe has two branch pipes arranged in parallel, the two hydraulic pumps are respectively arranged on the two branch pipes, and the inlet of the fluid infusion pipe is connected to one of the branch pipes.

[0027] In a preferred embodiment of the present invention, a second safety valve is provided on the branch pipe connected to the fluid infusion pipe.

[0028] In a preferred embodiment of the present invention, a filter is further provided on the cooling circulation pipe.

[0029] In a preferred embodiment of the present invention, the hydraulic oil tank is provided with a temperature monitoring device and a liquid level monitoring device.

[0030] In a preferred embodiment of the present invention, the heat exchanger is connected to a second cooling water pipe.

[0031] In a preferred embodiment of the present invention, a temperature sensor is provided on the bidirectional hydraulic pump.

[0032] Compared with the prior art, the present invention has the following characteristics and advantages:

[0033] 1. The cooling system of the crystallizer hydraulic vibration device described in the present invention adopts a highly integrated circulating cooling hydraulic station in conjunction with the flushing and cooling components on the servo direct-drive crystallizer hydraulic vibration device. The oil circuit in the servo direct-drive crystallizer hydraulic vibration device is circulated and flushed by low-temperature hydraulic oil to take away the heat in the hydraulic pump body and the system, ensuring that the operating temperature of the entire system is within the set range. It not only ensures that the servo direct-drive crystallizer hydraulic vibration device can operate continuously and uninterruptedly under high temperature and high-frequency vibration conditions, but also ensures the stability of the equipment operation and extends the service life of the equipment.

[0034] 2. The cooling system of the crystallizer hydraulic vibration device described in the present invention integrates various oil circuits and components together, eliminating complex pipe connections, making the equipment structure more compact and more integrated. It not only realizes the connection of the bidirectional hydraulic pump to the control oil circuit of the servo hydraulic cylinder, thereby controlling the servo hydraulic cylinder, but also realizes the circulating cooling and oil replenishment effect of the circulating cooling hydraulic station on the hydraulic oil in the servo direct-drive crystallizer hydraulic vibration device. At the same time, the high-temperature hydraulic oil in the servo direct-drive crystallizer hydraulic vibration device is returned to the hydraulic oil tank to achieve the flushing of the circuit, improve the cleanliness level of the circuit, and extend the service life of the equipment. The safety valve set in the oil circuit not only realizes the safety protection of the system equipment, extends the service life of the components, but also ensures the safety of the operator.

[0035] 3. The cooling system of the crystallizer hydraulic vibration device described in the present invention is provided with a filter in the circulating cooling hydraulic station, which can realize the circulating filtration of the hydraulic oil inside the system, and is used to filter out pollutants in the hydraulic oil and maintain the cleanliness of the hydraulic oil, which is beneficial to extend the service life of the equipment and ensure the stable operation of the equipment.

[0036] 4. The cooling system of the hydraulic vibrating device of the crystallizer described in the present invention has high heat transfer efficiency and good cooling effect, and can well realize the temperature control of the equipment.

[0037] 5. The cooling system of the crystallizer hydraulic vibration device described in the present invention has high integration, small space occupation, short installation period, small construction workload, and small maintenance workload, which can save a lot of labor costs.

[0038] 6. The cooling system of the hydraulic vibrating device of the crystallizer of the present invention collects the leaked oil in the system through the return pipe at the same time, and the amount of hydraulic oil used is extremely small, which saves a lot of hydraulic oil use and related hazardous waste treatment, and is more environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0040] The drawings described herein are for illustrative purposes only and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the various components in the drawings are merely illustrative and are used to help understand the present invention, and are not intended to specifically limit the shapes and proportional dimensions of the various components of the present invention. Those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to specific circumstances under the guidance of the present invention.

[0041] Figure 1 This is a schematic structural diagram of the cooling system of the hydraulic vibration device for the crystallizer according to the present invention;

[0042] Figure 2 This is a schematic structural diagram of the first part of the cooling system of the hydraulic vibration device for the crystallizer according to the present invention;

[0043] Figure 3 This is a schematic structural diagram of the second part of the cooling system of the crystallizer hydraulic vibration device of the present invention.

[0044] Description of reference numerals:

[0045] 10. Hydraulic oil tank; 11. Temperature monitoring equipment; 12. Liquid level monitoring equipment;

[0046] 20. Cooling circulation pipe; 21. Circulating cooling pump unit; 22. Heat exchanger; 23. Filter; 24. Second safety valve;

[0047] 30. Fluid infusion tube; 31. One-way valve; 32. Pressure sensor; 33. Accumulator;

[0048] 40. Liquid return pipe;

[0049] 50. Bidirectional hydraulic pump; 51. Servo hydraulic cylinder; 52. First oil pipe; 53. Second oil pipe; 54. Flushing and cooling assembly; 55. Safety pipe; 56. First safety valve; 57. Servo motor; 58. Displacement detection device; 59. Temperature sensor;

[0050] 60. First cooling water pipe; 61. Second cooling water pipe. DETAILED DESCRIPTION

[0051] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0052] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be an element centered thereon. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an element centered thereon. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0053] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0054] The present invention provides a cooling system for a crystallizer hydraulic vibration device, which is used to cool the hydraulic oil in an oil circulation pipeline formed by a bidirectional hydraulic pump 50 and a servo hydraulic cylinder 51 in the crystallizer hydraulic vibration device. The cooling system includes a hydraulic oil tank 10, a cooling circulation pipe 20, a liquid replenishing pipe 30 and a liquid return pipe 40; the inlet and outlet of the cooling circulation pipe 20 are both connected to the hydraulic oil tank 10, and the cooling circulation pipe 20 is provided with a circulating cooling pump group 21 and a heat exchanger 22; the inlet of the liquid replenishing pipe 30 is connected to the cooling circulation pipe 20 at the outlet of the circulating cooling pump group 21, and the outlet of the liquid replenishing pipe 30 is connected to the bidirectional hydraulic pump 50 through the oil circulation pipeline; the inlet of the liquid return pipe 40 is connected to the two chambers of the servo hydraulic cylinder 51 through a flushing cooling component 54, and the outlet of the liquid return pipe 40 is connected to the hydraulic oil tank 10.

[0055] The cooling system of the crystallizer hydraulic vibration device described in the present invention adopts a highly integrated circulating cooling hydraulic station in conjunction with the flushing cooling component 54 on the servo direct-drive crystallizer hydraulic vibration device. The oil circuit in the servo direct-drive crystallizer hydraulic vibration device is circulated and flushed by low-temperature hydraulic oil to take away the heat in the system and ensure that the operating temperature of the entire system is within the set range. It not only ensures that the servo direct-drive crystallizer hydraulic vibration device can operate continuously and uninterruptedly under high temperature and high-frequency vibration conditions, but also ensures the stability of the equipment operation and extends the service life of the equipment.

[0056] The specific structure of each part of the cooling system of the crystallizer hydraulic vibration device of the present invention, as well as the position and connection relationship between the parts will be described in detail below.

[0057] The cooling system of the crystallizer hydraulic vibration device mainly consists of two parts: an integrated circulating cooling hydraulic station and a servo direct-drive crystallizer hydraulic vibration device.

[0058] Integrated circulating cooling hydraulic station:

[0059] like Figure 1 and Figure 2 As shown, the integrated circulating cooling hydraulic station mainly includes a hydraulic oil tank 10, a circulating cooling pump group 21, a heat exchanger 22, a filter 23, a second safety valve 24, a temperature monitoring device 11, a liquid level monitoring device 12, etc. The specific pipeline connection structure is as follows.

[0060] like Figure 2 As shown, hydraulic oil is stored in the hydraulic oil tank 10. A cooling circulation pipe 20 is connected to the hydraulic oil tank 10. The inlet and outlet of the cooling circulation pipe 20 are both connected to the hydraulic oil tank 10. The hydraulic oil in the hydraulic oil tank 10 can enter the cooling circulation pipe 20 for cooling and then flow back into the hydraulic oil tank 10 after cooling. A circulating cooling pump group 21 is provided on the cooling circulation pipe 20. The circulating cooling pump group 21 is used to draw hydraulic oil from the hydraulic oil tank 10 into the cooling circulation pipe 20. The cooling circulation pipe 20 is also provided with a heat exchanger 22. The heat exchanger 22 is used to exchange heat and cool the hydraulic oil in the cooling circulation pipe 20, thereby cooling the hydraulic oil. The heat exchanger 22 can be a water-cooled heat exchanger connected to a second cooling water pipe 61. Low-temperature cold water is introduced into the heat exchanger 22 through the second cooling water pipe 61 and forms convection with the high-temperature hydraulic oil flowing through the heat exchanger 22 to cool the hydraulic oil.

[0061] In a preferred embodiment, if Figure 2 As shown, the cooling circulation pipe 20 is further provided with a filter 23, which is used to filter out pollutants in the hydraulic oil and maintain the cleanliness of the hydraulic oil, which is beneficial to extending the service life of the equipment and ensuring stable operation of the equipment; the cooling circulation pipe 20 is also provided with a second safety valve 24, which is used to provide safety protection for the oil circuit formed by the cooling circulation pipe 20, ensuring that the oil circuit will not operate at a pressure exceeding its rated working pressure, thereby ensuring the service life of each component.

[0062] In a preferred embodiment, if Figure 2 As shown, the hydraulic oil tank 10 is provided with a temperature monitoring device 11, which is used to monitor the hydraulic oil temperature in the hydraulic oil tank 10 in real time to display whether the hydraulic oil temperature is within the allowable temperature range; the hydraulic oil tank 10 is also provided with a liquid level monitoring device 12, which is used to monitor the hydraulic oil level in the hydraulic oil tank 10 in real time to display whether the hydraulic oil level is within the allowable liquid level range.

[0063] Further, such as Figure 1 and Figure 2As shown, a refill pipe 30 is connected to the cooling circulation pipe 20, and a return pipe 40 is connected to the hydraulic oil tank 10. The inlet of the refill pipe 30 is connected to the outlet of the circulating cooling pump group 21, and the outlet of the refill pipe 30 is connected to the servo direct-drive crystallizer hydraulic vibration device. As a result, the low-temperature hydraulic oil in the hydraulic oil tank 10, after being cooled by the cooling circulation pipe 20, can partially enter the refill pipe 30 after passing through the circulating cooling pump group 21, thereby replenishing the low-temperature hydraulic oil in the servo direct-drive crystallizer hydraulic vibration device. The inlet of the return pipe 40 is connected to the servo direct-drive crystallizer hydraulic vibration device, and the outlet of the return pipe 40 is connected to the hydraulic oil tank 10. As a result, high-temperature hydraulic oil generated or leaked in the servo direct-drive crystallizer hydraulic vibration device can flow into the hydraulic oil tank 10 through the return pipe 40, and then be cooled by the cooling circulation pipe 20.

[0064] As described above, the cooled low-temperature hydraulic oil stored in the hydraulic oil tank 10 can enter the servo direct-drive crystallizer hydraulic vibration device through the refill pipe 30, and be used to flush and cool the low-pressure side pipeline during the operation of the servo direct-drive crystallizer hydraulic vibration device and to compensate for the loss of hydraulic oil caused by leakage. Since the hydraulic oil in the hydraulic oil tank 10 is low-temperature hydraulic oil that has passed through the cooler, it can reduce the temperature of the hydraulic oil in the pipeline after being added to the vibration device, thereby cooling the equipment.

[0065] In a preferred embodiment, if Figure 2 As shown, the circulating cooling pump assembly 21 includes two hydraulic pumps connected in parallel, and the cooling circulation pipe 20 includes two branch pipes connected in parallel. The two hydraulic pumps are located on each branch pipe, and the inlet of the fluid replenishment pipe 30 is connected to one of the branch pipes. Each branch pipe is equipped with a hydraulic pump for driving hydraulic oil. One hydraulic pump is used to drive the hydraulic oil's self-circulation within the cooling circulation pipe 20, and the other hydraulic pump is used to drive the hydraulic oil into the fluid replenishment pipe 30. The self-circulation and fluid replenishment drives are separated to prevent mutual influence between the two and ensure the stability of the oil system during operation.

[0066] Specifically, the circulating cooling pump assembly 21 draws hydraulic oil from the hydraulic oil tank 10 through the oil suction port S, discharges it through port P1, and then passes through the heat exchanger 22 for cooling. After filtering contaminants through the filter 23, the oil is returned to the hydraulic oil tank 10 through port B, thereby cooling and filtering the hydraulic oil. The circulating cooling pump assembly 21 draws hydraulic oil from the hydraulic oil tank 10 through the oil suction port S, discharges it through port P, and then enters the servo direct-drive crystallizer hydraulic vibration device through the refill pipe 30, flushing and cooling it while replenishing hydraulic oil lost due to leakage. A second safety valve 24 is located on the branch pipe connected to port P.

[0067] Servo direct drive mold hydraulic vibration device:

[0068] like Figure 1 and Figure 3 As shown, the servo direct-drive crystallizer hydraulic vibration device includes a bidirectional hydraulic pump 50, a servo hydraulic cylinder 51, a flushing and cooling component 54, an oil circulation pipeline, etc. The specific pipeline connection structure is as follows.

[0069] like Figure 3 As shown, a bidirectional hydraulic pump 50 is connected to a servo hydraulic cylinder 51 via an oil circulation pipeline. The forward and reverse rotation of the bidirectional hydraulic pump 50 controls the output of high-pressure hydraulic oil from its port A or port B, driving the extension or retraction of the servo hydraulic cylinder 51, thereby achieving high-frequency vibration of the servo hydraulic cylinder 51. The oil circulation pipeline includes a first oil pipe 52 and a second oil pipe 53. The two ends of the first oil pipe 52 are respectively connected to port A of the bidirectional hydraulic pump 50 and port a of the servo hydraulic cylinder 51, with port a communicating with the rod chamber of the servo hydraulic cylinder 51. The two ends of the second oil pipe 53 are respectively connected to port B of the bidirectional hydraulic pump 50 and port b of the servo hydraulic cylinder 51, with port b communicating with the rodless chamber of the servo hydraulic cylinder 51.

[0070] Further, such as Figure 3 As shown, the outlet of the infusion pipe 30 is connected to the first oil pipe 52 and the second oil pipe 53 respectively through two branch pipes. The outlet end of the infusion pipe 30 has two branch pipes, one of which is connected to the first oil pipe 52. When the hydraulic oil in the first oil pipe 52 is at a low pressure, the low-temperature hydraulic oil in the infusion pipe 30 can enter the first oil pipe 52 to flush and cool the first oil pipe 52, thereby replacing the high-temperature hydraulic oil in the oil pipe; the other branch pipe is connected to the second oil pipe 53. When the hydraulic oil in the second oil pipe 53 is at a low pressure, the low-temperature hydraulic oil in the infusion pipe 30 can enter the second oil pipe 53 to flush and cool the second oil pipe 53, thereby replacing the high-temperature hydraulic oil in the oil pipe.

[0071] Further, such as Figure 3 As shown, the inlet of the return pipe 40 is connected to the rod chamber and rodless chamber of the servo hydraulic cylinder 51 through the flushing and cooling assembly 54. The flushing and cooling assembly 54 has a first oil port (oil port 3) and a second oil port (oil port 1) and a third oil port (oil port 2) that can be switched to connect with the first oil port. The inlet end of the return pipe 40 is connected to the first oil port, and the second and third oil ports are connected to ports a and b of the servo hydraulic cylinder 51 respectively through oil pipes. In this embodiment, the two oil pipes that connect the second and third oil ports to the servo hydraulic cylinder 51 share a common section with the first oil pipe 52 and the second oil pipe 53 respectively. The flushing and cooling assembly 54 can adopt a two-position three-way reversing valve.

[0072] When the servo direct-drive crystallizer hydraulic vibration device is working:

[0073] When the bidirectional hydraulic pump 50 rotates forward and outputs high-pressure oil from port A, the first oil pipe 52 is in a high-pressure state and the second oil pipe 53 is in a low-pressure state. At this time, the piston of the servo hydraulic cylinder 51 descends. The pressurized low-temperature hydraulic oil enters the second oil pipe 53 through the replenishing pipe 30 and reaches the chamber connected to port B in the bidirectional hydraulic pump 50, thereby cooling the bidirectional hydraulic pump 50 and the second oil pipe 53 and replenishing the hydraulic oil leakage; at this time, the oil port 2 and the oil port 3 in the flushing cooling component 54 are connected, and the high-temperature hydraulic oil exchanged from the rodless cavity of the servo hydraulic cylinder 51 enters the return pipe 40 through the oil ports 2 and 3 on the flushing cooling component 54, and then flows back to the hydraulic oil tank 10 for circulation cooling.

[0074] When the bidirectional hydraulic pump 50 reverses and outputs high-pressure oil from port B, the second oil pipe 53 is in a high-pressure state and the first oil pipe 52 is in a low-pressure state. At this time, the piston of the servo hydraulic cylinder 51 rises. The pressurized low-temperature hydraulic oil enters the first oil pipe 52 through the replenishing pipe 30 and reaches the chamber connected to port A in the bidirectional hydraulic pump 50, thereby cooling the bidirectional hydraulic pump 50 and the first oil pipe 52 and replenishing hydraulic oil leakage; at this time, the oil port 1 and the oil port 3 in the flushing cooling component 54 are connected, and the high-temperature hydraulic oil exchanged from the rod cavity of the servo hydraulic cylinder 51 enters the return pipe 40 through the oil ports 1 and 3 on the flushing cooling component 54, and then flows back to the hydraulic oil tank 10 for circulating cooling.

[0075] In a preferred embodiment, if Figure 1 As shown, the servo direct-drive crystallizer hydraulic vibration device includes two groups of servo hydraulic cylinders 51 arranged in parallel, and each servo hydraulic cylinder 51 is connected to a corresponding hydraulic oil pipeline for control.

[0076] In a preferred embodiment, if Figure 3 As shown, the inlet of the return pipe 40 is connected through three branch lines to the first oil port, the oil drain port on the bidirectional hydraulic pump 50, and the oil drain port on the servo hydraulic cylinder 51. The return pipe 40 collects leaked oil from the system and returns it to the integrated circulating cooling hydraulic station, saving hydraulic oil and related hazardous waste disposal, which is more environmentally friendly.

[0077] Specifically, the inlet end of the return liquid pipe 40 has three branch pipes, the inlet of one branch pipe is connected to the oil port 3 on the flushing cooling assembly 54, the inlet of one branch pipe is connected to the oil drain port L on the bidirectional hydraulic pump 50, and the inlet of one branch pipe is connected to the oil drain port Y of the servo hydraulic cylinder 51.

[0078] In a preferred embodiment, if Figure 3As shown, the two branch pipes connected to the outlet end of the liquid replenishment pipe 30 are each provided with a one-way valve 31. The one-way valve 31 is installed on the two branch pipes through a dedicated interface to control the oil replenishment and flushing of the servo direct-drive crystallizer hydraulic vibration device to prevent the backflow of hydraulic oil.

[0079] In a preferred embodiment, if Figure 3 As shown, pressure sensors 32 are installed before and after the one-way valve 31. The pressure sensors 32 are installed on the corresponding oil pipes through dedicated interfaces. They are used to monitor the working pressure of the servo direct-drive crystallizer hydraulic vibration device in real time. When the system pressure is abnormal, an automatic alarm is issued to remind the operator to take necessary measures.

[0080] In a preferred embodiment, if Figure 3 As shown, an accumulator 33 is provided on the infusion tube 30. The accumulator 33 is installed on the infusion tube 30 through a dedicated interface and is used to absorb system pulsation to ensure smooth operation of the system.

[0081] In a preferred embodiment, if Figure 3 As shown, a safety pipe 55 is connected between the first oil pipe 52 and the second oil pipe 53, and a first safety valve 56 is installed on the safety pipe 55. The first safety valve 56 is installed on the safety pipe 55 through a dedicated interface and is used to provide safety protection for system equipment, ensuring that the system does not operate beyond its rated operating pressure, thereby ensuring the service life and safety of each component.

[0082] In a preferred embodiment, if Figure 3 As shown, the bidirectional hydraulic pump 50 is connected to a servo motor 57 for driving its rotation, and the servo motor 57 is connected to a first cooling water pipe 60. The bidirectional hydraulic pump 50 is connected to the bidirectional hydraulic pump 50 via a dedicated coupling and mounting bracket, which provides forward and reverse drive for the bidirectional hydraulic pump 50. The first cooling water pipe 60 connected to the bidirectional hydraulic pump 50 is used to reduce the temperature of the bidirectional hydraulic pump 50 and the surrounding operating environment.

[0083] In a preferred embodiment, if Figure 3 As shown, the bidirectional hydraulic pump 50 is provided with a temperature sensor 59. The temperature sensor 59 is installed on the bidirectional hydraulic pump 50 via a dedicated interface and is used to monitor the operating temperature of the servo direct-drive crystallizer hydraulic vibration device in real time. The integrated circulating cooling hydraulic station is started and stopped through interlocking control to control the hydraulic oil temperature within a set temperature range.

[0084] In a preferred embodiment, if Figure 3As shown, the servo hydraulic cylinder 51 is provided with a displacement detection device 58 for detecting the displacement of the servo hydraulic cylinder 51; its matching controller is communicated with the displacement detection device 58 and is used to control the speed of the servo motor 57 according to the displacement detected by the displacement detection device 58, so as to adjust the servo hydraulic cylinder 51 to achieve sinusoidal vibration or non-sinusoidal vibration.

[0085] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A cooling system for a crystallizer hydraulic vibration device, characterized in that: The cooling system is used to cool the hydraulic oil in the oil circulation pipeline formed by the bidirectional hydraulic pump (50) and the servo hydraulic cylinder (51) in the hydraulic vibration device of the crystallizer, and the cooling system includes: Hydraulic oil tank (10); a cooling circulation pipe (20), wherein the inlet and outlet of the cooling circulation pipe (20) are both connected to the hydraulic oil tank (10), and the cooling circulation pipe (20) is provided with a circulating cooling pump group (21) and a heat exchanger (22); a fluid replenishing pipe (30), wherein the inlet of the fluid replenishing pipe (30) is connected to the cooling circulation pipe (20) at the outlet of the circulating cooling pump group (21), and the outlet of the fluid replenishing pipe (30) is connected to the bidirectional hydraulic pump (50) through the oil circulation pipeline; A liquid return pipe (40), the inlet of the liquid return pipe (40) is connected to the two chambers of the servo hydraulic cylinder (51) through a flushing cooling component (54), and the outlet of the liquid return pipe (40) is connected to the hydraulic oil tank (10).

2. The cooling system of the mold hydraulic vibration device according to claim 1, characterized in that: The oil circulation pipeline includes: a first oil pipe (52) connected between the bidirectional hydraulic pump (50) and the rod chamber of the servo hydraulic cylinder (51); a second oil pipe (53) connected between the bidirectional hydraulic pump (50) and the rodless chamber of the servo hydraulic cylinder (51); The outlet of the fluid replenishing pipe (30) is respectively connected to the first oil pipe (52) and the second oil pipe (53) through two branch pipes.

3. The cooling system of the mold hydraulic vibration device according to claim 2, characterized in that: Both branch pipes are provided with a one-way valve (31), and the hydraulic oil in the fluid replenishing pipe (30) flows to the first oil pipe (52) and the second oil pipe (53) through the one-way valve (31).

4. The cooling system of the mold hydraulic vibration device according to claim 3, characterized in that: Pressure sensors (32) are provided before and after the one-way valve (31).

5. The cooling system of the mold hydraulic vibration device according to claim 2, characterized in that: An accumulator (33) is provided on the liquid infusion tube (30).

6. The cooling system of the mold hydraulic vibration device according to claim 1 or 2, characterized in that: The flushing and cooling assembly (54) has a first oil port and a second oil port and a third oil port that can be switched to communicate with the first oil port. The inlet of the return pipe (40) is connected to the first oil port, and the second oil port and the third oil port are respectively connected to the two chambers of the servo hydraulic cylinder (51) through oil pipes.

7. The cooling system of the mold hydraulic vibration device according to claim 6, characterized in that: The inlet of the liquid return pipe (40) is respectively connected to the first oil port, the oil drain port on the bidirectional hydraulic pump (50), and the oil drain port on the servo hydraulic cylinder (51) through three branch pipelines.

8. The cooling system of the mold hydraulic vibration device according to claim 2, characterized in that: A safety pipe (55) is connected between the first oil pipe (52) and the second oil pipe (53), and a first safety valve (56) is provided on the safety pipe (55).

9. The cooling system of the mold hydraulic vibration device according to claim 1, characterized in that: The bidirectional hydraulic pump (50) is connected to a servo motor (57) for driving the rotation thereof, and the servo motor (57) is connected to a first cooling water pipe (60).

10. The cooling system of the mold hydraulic vibration device according to claim 1, characterized in that: The circulating cooling pump group (21) has two hydraulic pumps arranged in parallel, the cooling circulation pipe (20) has two branch pipes arranged in parallel, the two hydraulic pumps are respectively arranged on the two branch pipes, and the inlet of the liquid replenishing pipe (30) is connected to one of the branch pipes.

11. The cooling system of the mold hydraulic vibration device according to claim 10, characterized in that: The branch pipe connected to the fluid infusion pipe (30) is provided with a second safety valve (24).

12. The cooling system of the mold hydraulic vibration device according to claim 1, characterized in that: The cooling circulation pipe (20) is further provided with a filter (23); and / or the heat exchanger (22) is connected to a second cooling water pipe (61).

13. The cooling system of the mold hydraulic vibration device according to claim 1, characterized in that: The hydraulic oil tank (10) is provided with a temperature monitoring device (11) and a liquid level monitoring device (12); and / or the bidirectional hydraulic pump (50) is provided with a temperature sensor (59).

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