Cooling system and control method

Abstract

The invention provides a cooling system and a control method, and relates to the technical field of equipment cooling, the cooling system is characterized in that a water outlet of normal water treatment equipment is connected with a water inlet of a first pneumatic valve, a water outlet of the first pneumatic valve is connected with a water inlet of a first one-way valve, and a water outlet of the first one-way valve is connected with a cooling water inlet of a casting machine; a water inlet of the second pneumatic valve is connected with a cooling water outlet of the casting machine, a water outlet of the second pneumatic valve is connected with a water return port of normal water treatment equipment, a water outlet of an accident water source is connected with a water inlet of the first manual valve, a water outlet of the first manual valve is connected with a water inlet of the third pneumatic valve, and a water outlet of the third pneumatic valve is connected with a water inlet of the second one-way valve. A water inlet of the fourth pneumatic valve is connected with the cooling water outlet, a water outlet of the fourth pneumatic valve is connected with a water inlet of the second manual valve, and a water outlet of the second manual valve is connected with a water return port of the accident water pool. The operation safety of the casting machine can be effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of casting machine cooling, and in particular to a cooling system and a control method. Background Art

[0002] Casting process is a crucial link in modern manufacturing industry, and the cooling system of casting machine plays an important role in ensuring product quality and improving production efficiency. Casting machine cooling mainly absorbs the heat generated by the casting machine through the cooling system, thereby reducing the surface temperature of castings and molds in the casting machine and preventing defects caused by overheating, such as deformation and cracks.

[0003] In the related art, the cooling water system of the casting machine usually includes a normal water supply system and an emergency water supply system. The emergency water supply system is often connected to the loop of the normal water system and enters the casting machine cooling water system through the normal water loop for circulating cooling. However, when the normal water system is abnormal, the emergency water system may also be affected, thereby affecting the safety of the casting machine operation. Summary of the invention

[0004] The problem solved by the invention is how to improve the safety of the operation of the casting machine.

[0005] In order to solve the above problems, the present invention provides a cooling system and a control method.

[0006] In a first aspect, the present invention provides a cooling system, including a normal water treatment device, an emergency water pool, an emergency water source, a first pneumatic valve, a second pneumatic valve, a third pneumatic valve, a fourth pneumatic valve, a first manual valve, a second manual valve, a first check valve, and a second check valve, wherein the water outlet of the normal water treatment device is connected to the water inlet of the first pneumatic valve, the water outlet of the first pneumatic valve is connected to the water inlet of the first check valve, the water outlet of the first check valve is used to be connected to the cooling water inlet of the casting machine, the water inlet of the second pneumatic valve is used to be connected to the cooling water outlet of the casting machine, and the second pneumatic valve is used to be connected to the cooling water outlet of the casting machine. The water outlet of the valve is connected to the return water port of the normal water treatment equipment, the water outlet of the emergency water source is connected to the water inlet of the first manual valve, the water outlet of the first manual valve is connected to the water inlet of the third pneumatic valve, the water outlet of the third pneumatic valve is connected to the water inlet of the second one-way valve, the water outlet of the second one-way valve is used to be connected to the cooling water inlet, the water inlet of the fourth pneumatic valve is used to be connected to the cooling water outlet, the water outlet of the fourth pneumatic valve is connected to the water inlet of the second manual valve, and the water outlet of the second manual valve is connected to the return water port of the emergency water tank.

[0007] Optionally, the cooling system further comprises a compressed air storage tank, wherein the compressed air storage tank is respectively connected to air inlets of the first pneumatic valve, the second pneumatic valve, the third pneumatic valve and the fourth pneumatic valve.

[0008] Optionally, the cooling system also includes a filtering assembly, which includes a filter, a third manual valve, a fourth manual valve and a fifth manual valve, the water inlet of the third manual valve is connected to the water outlet of the first one-way valve, the water outlet of the third manual valve is connected to the water inlet of the filter, the water outlet of the filter is connected to the water inlet of the fourth manual valve, the water outlet of the fourth manual valve is connected to the cooling water inlet of the casting machine, the water inlet of the fifth manual valve is connected to the water outlet of the first one-way valve, and the water outlet of the fifth manual valve is connected to the water outlet of the fourth manual valve.

[0009] Optionally, the cooling system further comprises a first pressure sensor, and the first pressure sensor is used to be arranged at a cooling water inlet of the casting machine.

[0010] Optionally, the cooling system further includes a second pressure sensor, and the second pressure sensor is used to be arranged between the third pneumatic valve and the second one-way valve.

[0011] In a second aspect, the present invention provides a method for controlling a cooling system, based on the cooling system described in the first aspect; the method for controlling a cooling system comprises:

[0012] When the casting machine is in the maintenance mode, the third pneumatic valve and the fourth pneumatic valve are tested by controlling the states of the first manual valve and the second manual valve;

[0013] When the casting machine is in a preparation mode, adjusting the state of the third pneumatic valve according to a comparison result between a cooling water inlet pressure of the casting machine and a first preset pressure;

[0014] When the casting machine is in a pouring mode, the states of the first pneumatic valve, the second pneumatic valve, the third pneumatic valve and the fourth pneumatic valve are controlled according to a preset control logic;

[0015] When the casting machine is in the accident mode, the states of the second pneumatic valve and the fourth pneumatic valve are adjusted according to the comparison result of the cooling water inlet pressure and the second preset pressure, wherein the second preset pressure is less than the first preset pressure.

[0016] Optionally, the testing of the third pneumatic valve and the fourth pneumatic valve by controlling the states of the first manual valve and the second manual valve includes:

[0017] The first manual valve and the second manual valve are controlled to be closed, and when the cooling water inlet pressure is greater than the first preset pressure, the opening and closing of the third pneumatic valve and the fourth pneumatic valve are tested.

[0018] Optionally, adjusting the states of the third pneumatic valve and the fourth pneumatic valve according to a comparison result between the cooling water inlet pressure of the casting machine and the first preset pressure includes:

[0019] When the cooling water inlet pressure is greater than or equal to the first preset pressure, the third pneumatic valve is controlled to open, and the fourth pneumatic valve is controlled to close;

[0020] When the cooling water inlet pressure is less than the first preset pressure, the third pneumatic valve is controlled to close.

[0021] Optionally, controlling the states of the first pneumatic valve, the second pneumatic valve, the third pneumatic valve and the fourth pneumatic valve according to a preset control logic includes:

[0022] The first pneumatic valve, the second pneumatic valve and the third pneumatic valve are controlled to be opened, and the fourth pneumatic valve is controlled to be closed.

[0023] Optionally, adjusting the states of the third pneumatic valve and the fourth pneumatic valve according to the comparison result of the cooling water inlet pressure and the second preset pressure includes:

[0024] When the cooling water inlet pressure is less than the second preset pressure, the second pneumatic valve is controlled to be closed, and the fourth pneumatic valve is controlled to be opened.

[0025] The beneficial effects of the cooling system and control method of the present invention are as follows: when the normal water supply circuit is operating normally, normal water is delivered to the casting machine through the normal water treatment equipment and its first pneumatic valve and first one-way valve for heat absorption and cooling. After absorbing the heat generated by the casting machine, the normal water returns to the normal water treatment equipment through the second pneumatic valve, and also brings the heat absorbed from the casting machine back to the normal water treatment equipment, so that the casting machine can be subjected to heat absorption and cooling through the normal water supply circuit, thereby avoiding safety hazards and equipment failures that may be caused by overheating of the casting machine, and ensuring safe and stable operation of the casting machine. When the normal water supply circuit fails, the accident water can be directly delivered to the casting machine through the accident water supply circuit composed of the accident water pool, the first manual valve, the third pneumatic valve and the second one-way valve. This ensures that when the normal water supply system fails, the casting machine can continue to be provided with accident water for cooling, thereby avoiding overheating and damage of the casting machine due to cooling interruption, improving the safety of casting machine operation, effectively preventing safety hazards caused by overheating of equipment, ensuring personnel safety and production safety, and through the action of the first one-way valve, accident water is prevented from entering the normal water supply circuit to cause diversion, thereby ensuring the water supply pressure and stability of the accident water, further improving the effect of cooling the casting machine by accident water, and ensuring the stability and safety of casting machine operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic structural diagram of a cooling system according to an embodiment of the present invention;

[0027] Figure 2 The figure is a flow chart of a method for controlling a cooling system according to an embodiment of the present invention.

[0028] Description of reference numerals:

[0029] 11-first pneumatic valve; 12-second pneumatic valve; 13-first one-way valve; 14-third manual valve; 14-filter; 16-fourth manual valve; 17-fifth manual valve; 18-first pressure sensor; 21-third pneumatic valve; 22-first manual valve; 23-second one-way valve; 24-fourth pneumatic valve; 25-second manual valve; 26-second pressure sensor; A-normal water treatment equipment; B-accident water source; C-accident water pool. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be interpreted as being limited to the embodiments described herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0031] It should be understood that the various steps described in the method embodiments of the present invention may be performed in different orders and / or in parallel. In addition, the method embodiments may include additional steps and / or omit the steps shown. The scope of the present invention is not limited in this respect.

[0032] The term "including" and its variations used in this document are open inclusions, that is, "including but not limited to"; the term "based on" means "based at least in part on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc. mentioned in the present invention are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0033] It should be noted that the modifications of "one" and "plurality" mentioned in the present invention are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0034] The names of the messages or information exchanged between multiple devices in the embodiments of the present invention are only used for illustrative purposes, and are not used to limit the scope of these messages or information.

[0035] In the related technology, the casting machine will generate heat when working, which will increase the temperature of the casting machine. High temperature may cause deformation of key components such as the crystallizer and degradation of the performance of the transmission components. The temperature of the casting machine can be controlled within a reasonable range through cooling to avoid the above problems. Usually, the cooling system of the casting machine needs to be equipped with emergency water as a double guarantee on the basis of the normal water supply system. However, in the conventional situation, the emergency water is only sent to the normal water supply system, and the water is still supplied through the water supply line of the normal water system. If the normal water supply line fails, it is still impossible to provide cooling water to the casting machine through the emergency water. Ultimately, the casting machine will be too hot due to the inability to cool in time, which may cause the crystallizer to deform and rupture due to excessive temperature, and the cooling water pipe, guide rollers and other components will be damaged due to cooling failure, affecting the safety of the casting machine operation. It should be noted that normal water is cooling water that has been treated by treatment equipment, such as through sedimentation, filtration, etc. The water quality is better than that of accident water, while accident water is mainly reserved for emergency situations, and the requirements for water quality may not be as strict as those for normal water. The water in the accident pool may be contaminated to a certain extent during long-term storage, and its suspended matter content may increase due to factors such as dust and impurities brought in by rainwater, and microorganisms may also multiply in it.

[0036] In view of the problems existing in the above-mentioned related technologies, this embodiment provides a cooling system and a control method.

[0037] like Figure 1 As shown, a cooling system provided by an embodiment of the present invention includes a normal water treatment device A, an accident water pool C, an accident water source B, a first pneumatic valve 11, a second pneumatic valve 12, a third pneumatic valve 21, a fourth pneumatic valve 24, a first manual valve 22, a second manual valve 25, a first check valve 13 and a second check valve 23, the outlet of the normal water treatment device A is connected to the water inlet of the first pneumatic valve 11, the outlet of the first pneumatic valve 11 is connected to the water inlet of the first check valve 13, the outlet of the first check valve 13 is used to be connected to the cooling water inlet of the casting machine, the inlet of the second pneumatic valve 12 is used to be connected to the cooling water outlet of the casting machine, and the first check valve 13 is used to be connected to the cooling water outlet of the casting machine. The water outlet of the second pneumatic valve 12 is connected to the return water port of the normal water treatment equipment A, the water outlet of the accident water source B is connected to the water inlet of the first manual valve 22, the water outlet of the first manual valve 22 is connected to the water inlet of the third pneumatic valve 21, the water outlet of the third pneumatic valve 21 is connected to the water inlet of the second one-way valve 23, the water outlet of the second one-way valve 23 is used to be connected to the cooling water inlet, the water inlet of the fourth pneumatic valve 24 is used to be connected to the cooling water outlet, the water outlet of the fourth pneumatic valve 24 is connected to the water inlet of the second manual valve 25, and the water outlet of the second manual valve 25 is connected to the return water port of the accident water tank C.

[0038] Specifically, when the cooling system supplies water to the casting machine, normal water is transported from the outlet of the normal water treatment equipment A to the inlet of the first pneumatic valve 11 connected thereto through a water pump and other equipment, and enters the inlet of the first one-way valve 13 through the outlet of the first pneumatic valve 11, and then enters the cooling water inlet of the casting machine connected thereto through the outlet of the first one-way valve 13, thereby transporting the normal water to the cooling water pipeline of the casting machine. After the normal water fully absorbs the heat generated by the casting machine in the cooling water pipeline of the casting machine, it flows into the inlet of the second pneumatic valve 12 connected thereto through the cooling water outlet of the casting machine, and finally flows into the normal water treatment equipment A from the return water port of the normal water treatment equipment A after passing through the outlet of the second pneumatic valve 12, thereby completing a cycle in the normal water supply circuit and bringing the absorbed heat in the casting machine back to the normal water treatment equipment A. When the normal water supply circuit fails, that is, the normal water supply circuit and the return circuit are unable to transport and recycle normal water, the accident water is transported to the water inlet of the first manual valve 22 connected thereto through the water outlet of the accident water source B, and enters the water inlet of the third pneumatic valve 21 through the water outlet of the first manual valve 22, and then enters the water inlet of the second one-way valve 23 through the water outlet of the third pneumatic valve 21, and finally enters the cooling water inlet of the casting machine connected thereto through the water outlet of the second one-way valve 23. Therefore, when the normal water system cannot supply water to the casting machine, the casting machine is directly supplied with water through the accident water source, and due to the action of the first one-way valve 13, the accident water will not flow back into the circuit of the normal water system through the casting machine, thereby avoiding the pollution of normal water by the accident water. Thereby, the casting machine is cooled by the accident water entering the cooling pipe of the casting machine to absorb heat. After absorbing the heat, the accident water flows out through the cooling water outlet of the casting machine, and enters the water inlet of the fourth pneumatic valve 24 connected thereto, and then flows into the water inlet of the second manual valve 25 connected thereto through the water outlet of the fourth pneumatic valve 24, and then flows into the water inlet of the accident water pool C through the water inlet of the second manual valve 25 for recovery.

[0039] It should be noted that in the cooling system, the normal water treatment equipment A is used to filter and cool the normal water, deliver low-temperature normal water to the cooling system through the water outlet, and recover the relatively high-temperature normal water that absorbs the heat of the casting machine through the water return port, and cool it through the internal cooling equipment, and then supply water to the casting machine through the water outlet. The outlet of the accident water source B is used to deliver the accident water in the accident water source B to the accident water supply circuit, so that the casting machine can be ventilated by the accident water when normal water cannot be supplied, and the water return port of the accident water pool C is used to recover the accident water that absorbs the heat of the casting machine, so that the accident water flows into the accident water pool C through the water return port.

[0040] And, if Figure 1 As shown, the cooling system can be connected to multiple casting machines or equipment that needs to provide cooling water at the same time. For example, N equipment or casting machines are connected in parallel in the cooling system, so that cooling water can be supplied to 1# to N# equipment at the same time. In addition, as the cooling effect and the demand for cooling medium change, in addition to water, a variety of different cooling media can also be used, such as oil or salt liquids.

[0041] In this embodiment, when the normal water supply circuit works normally, normal water is delivered to the casting machine through the normal water treatment equipment A and its first pneumatic valve 11 and the first one-way valve 13 for heat absorption and cooling. After absorbing the heat generated by the casting machine, the normal water returns to the normal water treatment equipment A through the second pneumatic valve 12, and also brings the heat absorbed from the casting machine back to the normal water treatment equipment A. Thus, the casting machine can be cooled by absorbing heat through the normal water supply circuit, thereby avoiding safety hazards and equipment failures that may be caused by overheating of the casting machine, and ensuring safe and stable operation of the casting machine. When the normal water supply circuit fails, the accident water can be directly delivered to the casting machine through the accident water supply circuit composed of the accident water pool C, the first manual valve 22, the third pneumatic valve 21 and the second one-way valve 23, so as to ensure that when the normal water supply system fails, the casting machine can continue to be provided with accident water for cooling, avoiding overheating and damage of the casting machine due to cooling interruption, improving the safety of the casting machine operation, effectively preventing safety hazards caused by overheating of equipment, ensuring personnel safety and production safety, and through the action of the first one-way valve 13, accident water is prevented from entering the normal water supply circuit to cause diversion, ensuring the water supply pressure and stability of the accident water, further improving the effect of cooling the casting machine by accident water, and ensuring the stability and safety of the casting machine operation.

[0042] Optionally, the cooling system further comprises a compressed air storage tank, which is respectively connected to the air inlets of the first pneumatic valve 11 , the second pneumatic valve 12 , the third pneumatic valve 21 and the fourth pneumatic valve 24 .

[0043] Specifically, the compressed air used by the pneumatic valves in the cooling system is stored and supplied by a compressed air storage tank. The compressed air storage tank is connected to the air inlets of the first pneumatic valve 11, the second pneumatic valve 12, the third pneumatic valve 21 and the fourth pneumatic valve 24 respectively, providing a power source for the action of the pneumatic valve. When the pneumatic valve obtains an action signal, the pneumatic valve is made to perform a corresponding action through compressed air. The pneumatic valve can be a pneumatic butterfly valve, a pneumatic ball valve or a starter plug valve.

[0044] In this optional embodiment, compressed air is provided to the first pneumatic valve 11, the second pneumatic valve 12, the third pneumatic valve 21 and the fourth pneumatic valve 24 through a compressed air storage tank, so that the cooling system can be more flexibly, efficiently and reliably adjusted according to the needs of the casting machine, meeting the needs of various complex controls of the cooling process. Through a continuous and stable supply of cooling water, it is ensured that the casting machine is always in a suitable operating temperature range, thereby improving the safety and stability of the casting machine operation.

[0045] like Figure 1 Optionally, the cooling system further comprises a filtering assembly, wherein the filtering assembly comprises a filter 14, a third manual valve 14, a fourth manual valve 16 and a fifth manual valve 17, wherein the water inlet of the third manual valve 14 is connected to the water outlet of the first one-way valve 13, the water outlet of the third manual valve 14 is connected to the water inlet of the filter 14, the water outlet of the filter 14 is connected to the water inlet of the fourth manual valve 16, the water outlet of the fourth manual valve 16 is connected to the cooling water inlet of the casting machine, the water inlet of the fifth manual valve 17 is connected to the water outlet of the first one-way valve 13, and the water outlet of the fifth manual valve 17 is connected to the water outlet of the fourth manual valve 16.

[0046] Specifically, in the water supply circuit of normal water, the filter assembly is arranged between the first one-way valve 13 and the casting machine, so that the normal water entering the cooling water pipeline of the casting machine is filtered by the filter assembly to prevent impurities from damaging the cooling pipeline of the casting machine, such as blocking the cooling pipeline or damaging sensitive components in the cooling device. After the normal water enters the water inlet of the third manual valve 14 through the water outlet of the first one-way valve 13, it enters the water inlet of the filter 14 through the water outlet of the third manual valve 14, so that the normal water is filtered by the filter 14, and the filtered normal water flows into the water inlet of the fourth manual valve 16 through the water outlet of the filter 14, and flows into the cooling pipeline of the casting machine from the cooling water inlet of the casting machine through the water outlet of the fourth manual valve 16, so as to endothermally cool the casting machine. At the same time, the fifth manual valve 17 is connected in parallel with the filter 14, that is, the water inlet of the fifth manual valve 17 is connected to the water outlet of the first one-way valve 13, and the water outlet of the fifth manual valve 17 is connected to the cooling water inlet of the casting machine. When the filter 14 fails or the filter element is replaced, the third manual valve 14 and the fourth manual valve 16 can be closed to allow normal water to flow through the fifth manual valve 17 to supply water to the casting machine.

[0047] In this optional embodiment, the normal water entering therein is filtered through the filter 14 to filter out impurities (such as mud, rust, metal debris, etc.) therein, so as to prevent these impurities from entering the cooling pipes of the casting machine, which may cause pipe blockage, reduce cooling efficiency, and even damage the cooling equipment. The clean normal water after filtration can provide a high-quality cooling water source for the casting machine, thereby providing a cooling zone for the casting machine and ensuring the safety and stability of the casting machine operation.

[0048] like Figure 1 As shown, optionally, the cooling system further comprises a first pressure sensor 18, and the first pressure sensor 18 is used to be arranged at a cooling water inlet of the casting machine.

[0049] In this optional embodiment, the pressure of the cooling water inlet entering the casting machine is monitored by a first pressure sensor 18 arranged at the cooling water inlet of the casting machine to ensure the stability of the water pressure entering the cooling pipe of the casting machine. The water pressure is stabilized to maintain a sufficient cooling water flow rate and flow rate to ensure normal cooling of the casting machine and avoid affecting the quality of the casting or damaging the equipment due to water pressure problems. At the same time, the monitored pressure signal is transmitted to the control system in real time, so that when the water supply pressure is abnormal, the stability of the cooling water supply of the casting machine is maintained by switching between normal water and emergency water.

[0050] Optionally, the cooling system further includes a second pressure sensor 26 , and the second pressure sensor 26 is used to be arranged between the third pneumatic valve 21 and the second one-way valve 23 .

[0051] In this optional embodiment, in order to ensure the stability of water supply, a second pressure sensor 26 is provided between the third pneumatic valve 21 and the second one-way valve 23 to monitor the water supply pressure of the emergency water in real time, to ensure that when the normal water supply system fails, stable cooling water can be provided through the emergency water, to avoid insufficient cooling of the casting machine due to pressure problems, and to maintain the emergency water supply within a suitable pressure and flow range to meet the cooling needs of the casting machine.

[0052] A method for controlling a cooling system, characterized in that, based on the cooling system as described above, the method for controlling the cooling system comprises:

[0053] S100, when the casting machine is in the maintenance mode, the third pneumatic valve 21 and the fourth pneumatic valve 24 are tested by controlling the states of the first manual valve 22 and the second manual valve 25.

[0054] Specifically, in the casting machine maintenance mode, the cooling system is not required to supply water to the casting machine, so the third pneumatic valve 21 and the fourth pneumatic valve 24 are tested by adjusting the states of the first manual valve 22 and the second manual valve 25 to ensure that the third pneumatic valve 21 and the fourth pneumatic valve 24 function normally. It is ensured that when the normal water supply circuit fails, the third pneumatic valve 21 and the fourth pneumatic valve 24 can act quickly and accurately, so that the accident water is smoothly supplied to the casting machine, so as to prevent the casting machine from being damaged due to insufficient cooling, and ensure the safety and stability of the casting machine operation.

[0055] S200, when the casting machine is in a preparation mode, adjusting the state of the third pneumatic valve 21 according to a comparison result between a cooling water inlet pressure of the casting machine and a first preset pressure.

[0056] Specifically, in the casting machine preparation mode, the cooling water supply for the casting process of the casting machine is prepared, that is, water is supplied through the normal water supply system, and emergency water is kept available to supply the casting machine at any time, that is, the first manual valve 22 and the second manual valve 25 are controlled to be opened, and the fourth pneumatic valve 24 is controlled to be closed, and the third pneumatic valve 21 is controlled to be opened, so as to keep the emergency water supply circuit in a preparation state. When the normal water supply circuit fails, cooling water can be provided to the casting machine in time through the emergency water. At the same time, since the preparation state does not actually require water supply to the casting machine, it is necessary to control the emergency water. According to the comparison result of the cooling water inlet pressure and the first preset pressure, the state of the third pneumatic valve 21 is adjusted to avoid the emergency water from entering the cooling pipe of the casting machine in the preparation state.

[0057] S300, when the casting machine is in the pouring mode, the states of the first pneumatic valve 11, the second pneumatic valve 12, the third pneumatic valve 21 and the fourth pneumatic valve 24 are controlled according to a preset control logic.

[0058] Specifically, when the casting machine is in the casting mode, that is, the casting machine starts to run, the states of the first pneumatic valve 11, the second pneumatic valve 12, the third pneumatic valve 21 and the fourth pneumatic valve 24 are controlled through the pre-set control logic, so as to keep the normal water supply line unobstructed and put the emergency water supply route in a ready state, so that the normal water supply circuit and the emergency water supply circuit can supply water to the casting machine under the set rules.

[0059] S400, when the casting machine is in the emergency mode, the states of the second pneumatic valve 12 and the fourth pneumatic valve 24 are adjusted according to the comparison result between the cooling water inlet pressure and the second preset pressure, wherein the second preset pressure is less than the first preset pressure.

[0060] Specifically, when the casting machine is in a fault mode, the fault mode here refers to a situation where the cooling water supply of the casting machine fails, that is, when the normal water supply circuit cannot provide cooling water to the casting machine, the states of the second pneumatic valve 12 and the fourth pneumatic valve 24 are adjusted according to the cooling water inlet pressure and the second preset pressure. When the casting machine is cooled by accident water, the accident water after absorbing the heat of the casting machine can return to the accident water pool C to prevent the accident water from entering the normal water treatment equipment A and polluting the normal water.

[0061] Optionally, the testing of the third pneumatic valve 21 and the fourth pneumatic valve 24 by controlling the states of the first manual valve 22 and the second manual valve 25 includes:

[0062] The first manual valve 22 and the second manual valve 25 are controlled to be closed, and when the cooling water inlet pressure is greater than the first preset pressure, the opening and closing of the third pneumatic valve 21 and the fourth pneumatic valve 24 are tested.

[0063] Specifically, the casting machine is in a non-normal production state when in maintenance mode, the water pump of the normal water treatment equipment A operates at a low frequency, and the low-pressure normal water enters the cooling water pipeline of the casting machine through the opened first pneumatic valve 11 and the first one-way valve 13, and flows through the second pneumatic valve 12 to return to the normal water treatment equipment A after absorbing the heat of the casting machine. At this time, the cooling water inlet pressure is lower than the first preset pressure (6.5 bar), and at the same time, the normal water supply circuit and the accident water supply circuit are both in a low-pressure alarm state, the cooling water in the casting machine is in a low-flow alarm state, and the third pneumatic valve 21 and the fourth pneumatic valve 24 are controlled to be in a relational state. In order to ensure that the accident water can enter smoothly in the event of an emergency in the cooling system of the casting machine, it is necessary to perform an action test on the third pneumatic valve 21 and the fourth pneumatic valve 24 to ensure that the third pneumatic valve 21 and the fourth pneumatic valve 24 will not be blocked or unable to act. The test method of the third pneumatic valve 21 is to first close the first manual valve 22 and the second manual valve 25, in order to prevent the accident water from entering the normal water supply circuit during the test and causing pollution to the normal water. Since the casting machine is in maintenance mode, the pressure of the cooling water inlet is lower than the first preset pressure. At this time, the cooling water inlet pressure is increased. When the cooling water inlet pressure is greater than the first preset pressure, if the third pneumatic valve 21 automatically adjusts from the closed state to the open state according to the set control logic, it means that the function of the third pneumatic valve 21 is normal and the normal opening and closing action can be performed. If the third pneumatic valve 21 cannot be adjusted to the open state, it means that the function of the third pneumatic valve 21 is abnormal and needs to be inspected and repaired to eliminate the hidden dangers of the fault. Similarly, when the cooling water inlet pressure is less than the second preset pressure, according to the control logic, it is necessary to supply water through the accident water, and the fourth pneumatic valve 24 should be switched to the open state. Whether the fourth pneumatic valve 24 is switched to the open state is judged to determine whether the fourth pneumatic valve 24 functions normally. By testing the third pneumatic valve 21 and the fourth pneumatic valve 24, it can be ensured that the third pneumatic valve 21 and the fourth pneumatic valve 24 function normally, so that they can be opened normally and provide cooling water to the casting machine when emergency water supply is needed, thereby ensuring the safety of the casting machine operation.

[0064] Optionally, adjusting the states of the third pneumatic valve 21 and the fourth pneumatic valve 24 according to the comparison result between the cooling water inlet pressure of the casting machine and the first preset pressure includes:

[0065] When the cooling water inlet pressure is greater than or equal to the first preset pressure, the third pneumatic valve 21 is controlled to open, and the fourth pneumatic valve 24 is controlled to close;

[0066] When the cooling water inlet pressure is lower than the first preset pressure, the third pneumatic valve 21 is controlled to be closed.

[0067] Specifically, when the normal pressure of the cooling water inlet of the casting machine is greater than or equal to the first preset pressure, for example, the cooling water inlet pressure is 8.5 bar, and the first preset pressure is 6.5 bar, in order to ensure that the accident water can directly provide cooling water to the casting machine in time when the normal water supply circuit fails, the first manual valve 22 and the second manual valve 25 are controlled to remain in the open state, and the third pneumatic valve 21 is controlled to switch to the open state, and the fourth pneumatic valve 24 is controlled to switch to the closed state. Since the water supply pressure of the accident water (3.5 bar) is less than the water supply pressure of the normal water (8.5 bar), that is, less than the cooling water inlet pressure, the accident water is cut off at the outlet of the second one-way valve 23 under the action of the cooling water supply pressure, and cannot enter the normal water supply circuit and the cooling pipe of the casting machine. When the cooling water inlet pressure is less than the preset pressure, it is necessary to control the third pneumatic valve 21 to switch from the open state to the closed state to prevent the accident water from entering the normal water supply circuit in the ready state and polluting the normal water.

[0068] Optionally, controlling the states of the first pneumatic valve 11, the second pneumatic valve 12, the third pneumatic valve 21 and the fourth pneumatic valve 24 according to a preset control logic includes:

[0069] The first pneumatic valve 11 , the second pneumatic valve 12 and the third pneumatic valve 21 are controlled to be opened, and the fourth pneumatic valve 24 is controlled to be closed.

[0070] Specifically, when the casting machine is in the preparation mode and all valve opening and closing signals and sensor signals are in place according to the control logic, the operator operates the casting machine to switch to the casting mode, and the casting machine end works normally to pull the billet. At the same time, the first pneumatic valve 11, the second pneumatic valve 12, and the third pneumatic valve 21 are controlled to maintain the corresponding states according to the setting of the control logic, that is, the first pneumatic valve 11, the second pneumatic valve 12 and the third pneumatic valve 21 are controlled to remain in the open state, so that the cooling system can continuously and stably provide cooling water for the casting machine to ensure the safe and stable operation of the casting machine, and the fourth pneumatic valve 24 is controlled to remain in the closed state, so as to prevent normal water from entering the accident water return circuit and avoid waste of normal water.

[0071] Optionally, adjusting the states of the third pneumatic valve 21 and the fourth pneumatic valve 24 according to the comparison result of the cooling water inlet pressure and the second preset pressure includes:

[0072] When the cooling water inlet pressure is lower than the second preset pressure, the second pneumatic valve 12 is controlled to be closed, and the fourth pneumatic valve 24 is controlled to be opened.

[0073] Specifically, during the operation of the casting machine, when it is detected that the pressure at the cooling water inlet is less than the second preset pressure, the fourth pneumatic valve 24 in the accident water circuit is first controlled to switch from a closed state to an open state, and the second pneumatic valve 12 in the normal water circuit is switched from an open state to a closed state, so that the accident water that has passed through the casting machine and absorbed heat can enter the accident water pool C through the fourth pneumatic valve 24. Since the quality of the accident water supply is worse than that of the normal water supply, in order to avoid contaminating the normal water in the normal water treatment equipment A, the accident return water is led to the accident water pool C. It should be noted that the second preset pressure is set to be less than or equal to the water supply pressure of the accident water, so that when the pressure at the cooling water inlet is less than this pressure, the accident water can be directly sent to the cooling pipe of the casting machine under the action of the accident water pressure to provide cooling water for the casting machine.

[0074] A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, the storage medium can be a disk, an optical disk, a read-only memory (ROM) or a random access memory (RAM), etc. In the present application, the unit described as a separate component may or may not be physically separated, and the component displayed as a unit may or may not be a physical unit, that is, it may be located in one place, or it may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiment of the present invention. In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

[0075] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A cooling system, characterized in that: The invention comprises a normal water treatment device, an accident water pool, an accident water source, a first pneumatic valve (11), a second pneumatic valve (12), a third pneumatic valve (21), a fourth pneumatic valve (24), a first manual valve (22), a second manual valve (25), a first check valve (13) and a second check valve (23), wherein the water outlet of the normal water treatment device is connected to the water inlet of the first pneumatic valve (11), the water outlet of the first pneumatic valve (11) is connected to the water inlet of the first check valve (13), the water outlet of the first check valve (13) is used to be connected to the cooling water inlet of the casting machine, the water inlet of the second pneumatic valve (12) is used to be connected to the cooling water outlet of the casting machine, and the second pneumatic valve (12) is used to be connected to the cooling water outlet of the casting machine. The water outlet of the emergency water source is connected to the water inlet of the first manual valve (22), the water outlet of the first manual valve (22) is connected to the water inlet of the third pneumatic valve (21), the water outlet of the third pneumatic valve (21) is connected to the water inlet of the second one-way valve (23), the water outlet of the second one-way valve (23) is used to be connected to the cooling water inlet, the water inlet of the fourth pneumatic valve (24) is used to be connected to the cooling water outlet, the water outlet of the fourth pneumatic valve (24) is connected to the water inlet of the second manual valve (25), and the water outlet of the second manual valve (25) is connected to the water return port of the emergency water tank.

2. The cooling system according to claim 1, characterized in that: It also includes a compressed air storage tank, which is respectively connected to the air inlets of the first pneumatic valve (11), the second pneumatic valve (12), the third pneumatic valve (21) and the fourth pneumatic valve (24).

3. The cooling system according to claim 1, characterized in that: The invention also comprises a filter assembly, wherein the filter assembly comprises a filter (14), a third manual valve (14), a fourth manual valve (16) and a fifth manual valve (17), wherein the water inlet of the third manual valve (14) is connected to the water outlet of the first one-way valve (13), the water outlet of the third manual valve (14) is connected to the water inlet of the filter (14), the water outlet of the filter (14) is connected to the water inlet of the fourth manual valve (16), the water outlet of the fourth manual valve (16) is connected to the cooling water inlet of the casting machine, the water inlet of the fifth manual valve (17) is connected to the water outlet of the first one-way valve (13), and the water outlet of the fifth manual valve (17) is connected to the water outlet of the fourth manual valve (16).

4. The cooling system according to claim 1, characterized in that: It also includes a first pressure sensor (18), which is used to be arranged at the cooling water inlet of the casting machine.

5. The cooling system according to claim 1, characterized in that: It also includes a second pressure sensor (26), wherein the second pressure sensor (26) is used to be arranged between the third pneumatic valve (21) and the second one-way valve (23).

6. A method for controlling a cooling system, characterized in that: Based on the cooling system according to any one of claims 1 to 5; the control method of the cooling system comprises: When the casting machine is in maintenance mode, the third pneumatic valve (21) and the fourth pneumatic valve (24) are tested by controlling the states of the first manual valve (22) and the second manual valve (25); When the casting machine is in a preparation mode, adjusting the state of the third pneumatic valve (21) according to a comparison result between a cooling water inlet pressure of the casting machine and a first preset pressure; When the casting machine is in a pouring mode, the states of the first pneumatic valve (11), the second pneumatic valve (12), the third pneumatic valve (21) and the fourth pneumatic valve (24) are controlled according to a preset control logic; When the casting machine is in an emergency mode, the states of the second pneumatic valve (12) and the fourth pneumatic valve (24) are adjusted according to a comparison result between the cooling water inlet pressure and a second preset pressure, wherein the second preset pressure is less than the first preset pressure.

7. The control method of the cooling system according to claim 6, characterized in that: The method of testing the third pneumatic valve (21) and the fourth pneumatic valve (24) by controlling the states of the first manual valve (22) and the second manual valve (25) comprises: The first manual valve (22) and the second manual valve (25) are controlled to be closed, and when the cooling water inlet pressure is greater than the first preset pressure, the opening and closing of the third pneumatic valve (21) and the fourth pneumatic valve (24) are tested for action.

8. The control method of the cooling system according to claim 6, characterized in that: The step of adjusting the states of the third pneumatic valve (21) and the fourth pneumatic valve (24) according to the comparison result between the cooling water inlet pressure of the casting machine and the first preset pressure comprises: When the cooling water inlet pressure is greater than or equal to the first preset pressure, the third pneumatic valve (21) is controlled to open, and the fourth pneumatic valve (24) is controlled to close; When the cooling water inlet pressure is lower than the first preset pressure, the third pneumatic valve (21) is controlled to be closed.

9. The method for controlling a cooling system according to claim 6, characterized in that: The controlling of the states of the first pneumatic valve (11), the second pneumatic valve (12), the third pneumatic valve (21) and the fourth pneumatic valve (24) according to a preset control logic comprises: The first pneumatic valve (11), the second pneumatic valve (12) and the third pneumatic valve (21) are controlled to be opened, and the fourth pneumatic valve (24) is controlled to be closed.

10. The control method of the cooling system according to claim 6, characterized in that: The step of adjusting the states of the third pneumatic valve (21) and the fourth pneumatic valve (24) according to the comparison result between the cooling water inlet pressure and the second preset pressure comprises: When the cooling water inlet pressure is lower than the second preset pressure, the second pneumatic valve (12) is controlled to be closed, and the fourth pneumatic valve (24) is controlled to be opened.

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