A cooling system and control method

Abstract

The application provides a cooling system and a control method, relates to the technical field of equipment cooling, and the cooling system comprises the following: a normal water treatment equipment outlet is connected with a first pneumatic valve inlet; a first pneumatic valve outlet is connected with a first check valve inlet; a first check valve outlet is connected with a casting machine cooling water inlet; a second pneumatic valve inlet is connected with a casting machine cooling water outlet; a second pneumatic valve outlet is connected with a normal water treatment equipment return water outlet; an emergency water source outlet is connected with a first manual valve inlet; a first manual valve outlet is connected with a third pneumatic valve inlet; a third pneumatic valve outlet is connected with a second check valve inlet; a second check valve outlet is connected with a cooling water inlet; a fourth pneumatic valve inlet is connected with a cooling water outlet; a fourth pneumatic valve outlet is connected with a second manual valve inlet; and a second manual valve outlet is connected with an emergency water pool return water outlet. The application can effectively improve the safety of the operation of the casting machine.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of casting machine cooling, in particular to a cooling system and a control method. BACKGROUND

[0002] The casting process is a crucial link in modern manufacturing industry, and the cooling system of the casting machine plays an important role in ensuring product quality and improving production efficiency. The cooling of the casting machine is mainly through the cooling system to absorb the heat generated by the casting machine, so as to reduce the surface temperature of the casting and the mold in the casting machine, and prevent defects such as deformation, cracking, etc. caused by overheating.

[0003] In the related art, the cooling water system of the casting machine usually includes a normal water supply system and an accident water supply system. The accident 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 accident water system may also be affected, thereby affecting the safety of the operation of the casting machine. SUMMARY

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

[0005] To solve the above problems, the present application provides a cooling system and a control method.

[0006] In a first aspect, the present application provides a cooling system, comprising a normal water treatment device, an accident water pool, an accident 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, the water outlet of the normal water treatment device is connected with the water inlet of the first pneumatic valve, the water outlet of the first pneumatic valve is connected with the water inlet of the first check valve, the water outlet of the first check valve is used for connecting with the cooling water inlet of the casting machine, the water inlet of the second pneumatic valve is used for connecting with the cooling water outlet of the casting machine, the water outlet of the second pneumatic valve is connected with the backwater outlet of the normal water treatment device, the water outlet of the accident water source is connected with the water inlet of the first manual valve, the water outlet of the first manual valve is connected with the water inlet of the third pneumatic valve, the water outlet of the third pneumatic valve is connected with the water inlet of the second check valve, the water outlet of the second check valve is used for connecting with the cooling water inlet, the water inlet of the fourth pneumatic valve is used for connecting with the cooling water outlet, the water outlet of the fourth pneumatic valve is connected with the water inlet of the second manual valve, and the water outlet of the second manual valve is connected with the backwater outlet of the accident water pool.

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

[0008] Optionally, the cooling system further comprises a filter assembly, the filter assembly comprises 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 with the water outlet of the first check valve, the water outlet of the third manual valve is connected with the water inlet of the filter, the water outlet of the filter is connected with the water inlet of the fourth manual valve, the water outlet of the fourth manual valve is connected with the cooling water inlet of the casting machine, the water inlet of the fifth manual valve is connected with the water outlet of the first check valve, and the water outlet of the fifth manual valve is connected with the water outlet of the fourth manual valve.

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

[0010] Optionally, the cooling system further comprises a second pressure sensor, the second pressure sensor is arranged between the third pneumatic valve and the second check valve.

[0011] In the second aspect, the present application provides a control method of a cooling system, based on the cooling system of the first aspect; the control method of the 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 state of the first manual valve and the second manual valve;

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

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

[0015] When the casting machine is in the accident mode, the state of the second pneumatic valve and the fourth pneumatic valve is 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 state of the first manual valve and the second manual valve comprises:

[0017] controlling the first manual valve and the second manual valve to be closed, and when the cooling water inlet pressure is greater than the first preset pressure, performing action test on the opening and closing of the third pneumatic valve and the fourth pneumatic valve.

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

[0019] when the cooling water inlet pressure is greater than or equal to the first preset pressure, controlling the third pneumatic valve to be opened and the fourth pneumatic valve to be closed.

[0020] when the cooling water inlet pressure is less than the first preset pressure, controlling the third pneumatic valve to be closed.

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

[0022] controlling the first pneumatic valve, the second pneumatic valve and the third pneumatic valve to be opened and the fourth pneumatic valve to be closed.

[0023] Optionally, the adjusting the state 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 comprises:

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

[0025] The cooling system and the control method have the following beneficial effects: when the normal water supply circuit is in normal operation, the normal water is transported to the casting machine for heat absorption and cooling through the normal water treatment device and the first pneumatic valve and the first check valve, and after absorbing the heat generated by the casting machine, the second pneumatic valve is connected to the normal water treatment device, and the heat absorbed from the casting machine is also brought back to the normal water treatment device, so that the casting machine can be cooled by the normal water supply circuit to avoid the safety hazards and equipment failures caused by overheating of the casting machine, and ensure the safe and stable operation of the casting machine. When the normal water supply circuit fails, the accident water supply circuit composed of the accident water pool, the first manual valve, the third pneumatic valve and the second check valve can directly transport the accident water to the casting machine, so that the accident water can be provided to the casting machine for cooling when the normal water supply system fails, and the safety of the casting machine is improved, the safety hazards caused by overheating of the equipment are effectively prevented, the safety of personnel and production is ensured, and through the action of the first check valve, the accident water is prevented from entering the normal water supply circuit to cause diversion, the stability of the accident water supply pressure and the accident water supply is ensured, and the cooling effect of the accident water on the casting machine is further improved, and the stability and safety of the casting machine are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 FIG. 1 is a structural schematic diagram of a cooling system according to an embodiment of the present application;

[0027] Figure 2 FIG. 2 is a flowchart of a control method of a cooling system according to an embodiment of the present application.

[0028] BRIEF DESCRIPTION OF DRAWINGS

[0029] 11-First pneumatic valve; 12-Second pneumatic valve; 13-First check 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 check valve; 24-Fourth pneumatic valve; 25-Second manual valve; 26-Second pressure sensor; A- Normal water treatment device; B-Accident water source; C-Accident water pool. DETAILED DESCRIPTION

[0030] In order to make the above objectives, features and advantages of the present application more clear and comprehensible, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. Although some embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be interpreted as being limited to the embodiments set forth herein, but rather these embodiments are provided for a more thorough and complete understanding of the present application. It should be understood that the drawings and embodiments of the present application are merely for illustrative purposes and are not intended to limit the scope of the present application.

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

[0032] The term "comprising" and variations thereof as used herein are open-ended, that is, "comprising but not limited to"; the term "based on" is "based, at least in part, on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". Related definitions are given throughout the description. It should be noted that the concepts mentioned in the present application are merely illustrative and not restrictive, and those skilled in the art should understand that "one" "multiple" modification is illustrative and not restrictive, and unless otherwise explicitly stated in the context, it should be understood as "one or more".

[0033] It should be noted that the "one" "multiple" modification mentioned in the present application is illustrative and not restrictive, and those skilled in the art should understand that unless otherwise explicitly stated in the context, it should be understood as "one or more".

[0034] The names of the messages or information exchanged between the devices in the embodiments of the present application are only for illustrative purposes and are not intended to limit the scope of the messages or information.

[0035] In the related art, the caster generates heat when working, which increases the temperature of the caster. The high temperature can deform the crystallizer and other key components, and reduce the performance of the transmission components. The temperature of the caster can be controlled in a reasonable range through cooling to avoid the above problems. Generally, the cooling system of the caster needs to be equipped with emergency water as a double protection on the basis of the normal water supply system. However, in the conventional case, the emergency water is only sent to the normal water supply system, and the water supply is still performed through the water supply line of the normal water system. If the water supply line of the normal water system fails, the caster cannot be provided with cooling water through the emergency water, and the temperature of the caster is still too high, which can deform and break the crystallizer due to the high temperature, and damage the cooling water pipe, guide roller and other components due to the failure of cooling, thereby affecting the safety of the operation of the caster. It should be noted that the normal water is cooling water treated by a treatment device, for example, through sedimentation, filtration and the like. The water quality is better than that of the emergency water. The emergency water is mainly water reserved for emergency, and the requirement for the water quality is not as strict as that of the normal water. The water in the emergency water pool can be polluted to a certain extent during long-term storage, and the content of suspended solids can increase due to dust and rainwater erosion. Microorganisms can also breed in the water.

[0036] To solve the problems in the related art, the embodiment of the present application provides a cooling system and a control method.

[0037] As shown in Figure 1 A cooling system provided by the embodiment of the present application comprises a normal water treatment device A, an emergency water pool C, an emergency 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 water outlet of the normal water treatment device A is connected with the water inlet of the first pneumatic valve 11. The water outlet of the first pneumatic valve 11 is connected with the water inlet of the first check valve 13. The water outlet of the first check valve 13 is used to be connected with the cooling water inlet of the caster. The water inlet of the second pneumatic valve 12 is used to be connected with the cooling water outlet of the caster. The water outlet of the second pneumatic valve 12 is connected with the water return of the normal water treatment device A. The water outlet of the emergency water source B is connected with the water inlet of the first manual valve 22. The water outlet of the first manual valve 22 is connected with the water inlet of the third pneumatic valve 21. The water outlet of the third pneumatic valve 21 is connected with the water inlet of the second check valve 23. The water outlet of the second check valve 23 is used to be connected with the cooling water inlet. The water inlet of the fourth pneumatic valve 24 is used to be connected with the cooling water outlet. The water outlet of the fourth pneumatic valve 24 is connected with the water inlet of the second manual valve 25. The water outlet of the second manual valve 25 is connected with the water return of the emergency water pool C.

[0038] Specifically, when the cooling system supplies water to the casting machine, normal water is delivered from the water outlet of the normal water treatment device A to the water inlet of the first pneumatic valve 11 connected thereto by a device such as a water pump, and enters the water inlet of the first one-way valve 13 through the water outlet of the first pneumatic valve 11, and then enters the cooling water inlet of the casting machine connected thereto through the water outlet of the first one-way valve 13, so that the normal water is delivered into the cooling water pipeline of the casting machine, and 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 water inlet of the second pneumatic valve 12 connected thereto through the cooling water outlet of the casting machine, and finally flows out through the water outlet of the second pneumatic valve 12, and then flows into the normal water treatment device A from the water return port of the normal water treatment device A, so that the normal water completes a cycle in the normal water supply circuit and brings the absorbed heat in the casting machine back to the normal water treatment device A. When the normal water supply circuit fails, i.e. the normal water supply circuit and the water return circuit cannot deliver and recover the normal water, at this time, the accident water is delivered from the water outlet of the accident water source B to the water inlet of the first manual valve 22 connected thereto, 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, so that the accident water is directly supplied to the casting machine when the normal water system cannot supply water to the casting machine, and due to the action of the first one-way valve 13, the accident water cannot flow back into the circuit of the normal water system through the casting machine, avoiding the pollution of the accident water to the normal water. The accident water entering the cooling pipeline of the casting machine absorbs heat and cools the casting machine, and after absorbing heat, the accident water flows out through the cooling water outlet of the casting machine, enters the water inlet of the fourth pneumatic valve 24 connected thereto through the water outlet of the fourth pneumatic valve 24, 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 finally flows into the accident water pool C from the water inlet of the accident water pool C through the water inlet of the second manual valve 25, and is recovered in the accident water pool C.

[0039] It should be noted that in the cooling system, the normal water treatment device A is used to filter and cool the normal water, and delivers low-temperature normal water to the cooling system through the water outlet, and recovers normal water with a relatively high temperature after absorbing the heat of the casting machine through the water return port, and then cools it through the internal cooling device, and then supplies water to the casting machine through the water outlet. The water 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 accident water is used to supply water to the casting machine when the normal water cannot supply water, and the water return port of the accident water pool C is used to recover the accident water after absorbing 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, asFigure 1 As shown, the cooling system can be connected to multiple casting machines or devices requiring cooling water at the same time, for example, N devices or casting machines are connected to the cooling system in parallel, so that the cooling water can be supplied to the 1st to Nth devices at the same time, and different cooling media such as oil or salt liquid can be used in addition to water as the cooling medium as the cooling effect and cooling medium requirements change.

[0041] In this embodiment, when the normal water supply circuit is working normally, the normal water is supplied to the casting machine through the normal water treatment device A and the first pneumatic valve 11 and the first check valve 13 to absorb heat and cool down. After absorbing the heat generated by the casting machine, the second pneumatic valve 12 is connected to the normal water treatment device A, and at the same time, the heat absorbed from the casting machine is also brought back to the normal water treatment device A, so that the casting machine can be cooled by the normal water supply circuit to avoid safety hazards and equipment failures that may be caused by overheating of the casting machine, and ensure the safe and stable operation of the casting machine. When the normal water supply circuit fails, the accident water supply circuit composed of the accident water tank C, the first manual valve 22, the third pneumatic valve 21 and the second check valve 23 can directly supply accident water to the casting machine, so that accident water can be continuously supplied to the casting machine for cooling when the normal water supply system fails, and the safety of the casting machine is improved to prevent overheating and damage of the casting machine, improve the safety of the casting machine, effectively prevent safety hazards caused by overheating of the equipment, and ensure the safety of personnel and production. Through the action of the first check valve 13, the accident water is prevented from entering the normal water supply circuit to cause diversion, the stability of the accident water supply pressure and the stability of the accident water supply are ensured, and the cooling effect of the accident water on the casting machine is further improved, and the stability and safety of the casting machine are ensured.

[0042] Optionally, the cooling system further comprises a compressed air storage tank, and 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.

[0043] Specifically, the compressed air used by the pneumatic valves in the cooling system is stored and supplied by the 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 to provide a power source for the action of the pneumatic valves. When the pneumatic valves receive an action signal, the compressed air makes the pneumatic valves perform a responsive action. The pneumatic valves can be pneumatic butterfly valves, pneumatic ball valves or starting cock valves, etc.

[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 by the compressed air storage tank, so that the cooling system can be more flexible, efficient and reliable to adjust according to the needs of the casting machine, meet the needs of various complex control of the cooling process, through the continuous and stable supply of cooling water, ensure that the casting machine is always in the appropriate working temperature range, improve the safety and stability of the operation of the casting machine.

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

[0046] Specifically, in the normal water supply circuit, 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, preventing impurities from damaging the cooling pipeline of the casting machine, such as blocking the cooling pipeline or damaging sensitive components in the cooling equipment. 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. 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, thereby cooling 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 with the water outlet of the first one-way valve 13, and the water outlet of the fifth manual valve 17 is connected with 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, so that the normal water flows through the fifth manual valve 17 to supply water to the casting machine.

[0047] In the optional embodiment, the normal water entering the filter 14 is filtered to remove impurities (such as silt, rust, metal debris, etc.) to avoid the impurities entering the cooling pipeline of the casting machine, which may cause pipeline blockage, reduce cooling efficiency, and even damage the cooling equipment. The clean normal water after filtration can provide high-quality cooling water source for the casting machine, thereby cooling the cold zone of the casting machine and ensuring the safety and stability of the operation of the casting machine.

[0048] As shown in Figure 1 Optionally, the cooling system further comprises a first pressure sensor 18 arranged at the cooling water inlet of the casting machine.

[0049] In the optional embodiment, the first pressure sensor 18 arranged at the cooling water inlet of the casting machine monitors the pressure of the cooling water entering the cooling water inlet of the casting machine to ensure the stability of the water pressure in the cooling pipeline of the casting machine. The stable water pressure maintains sufficient cooling water flow rate and flow, ensures normal cooling of the casting machine, avoids affecting the quality of the casting blank or damaging the equipment due to water pressure problems, and simultaneously transmits the monitored pressure signal to the control system in real time, thereby maintaining the stability of the water supply for the casting machine cooling when the water supply pressure is abnormal by switching between normal water and emergency water.

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

[0051] In the optional embodiment, to ensure the stability of the water supply, the second pressure sensor 26 arranged between the third pneumatic valve 21 and the second one-way valve 23 monitors the water supply pressure of the emergency water in real time to ensure that when the normal water supply system fails, the stable cooling water can be provided by the emergency water, the insufficient cooling of the casting machine due to the pressure problem is avoided, and the emergency water supply is maintained in a suitable pressure and flow range to meet the cooling demand of the casting machine.

[0052] A control method of a cooling system, characterized in that the cooling system is based on the above cooling system; the control method of the cooling system comprises:

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

[0054] Specifically, in the maintenance mode of the casting machine, the cooling system does not need to supply water to the casting machine, so that 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 are normally functional. In the event of a failure of the normal water supply circuit, the third pneumatic valve 21 and the fourth pneumatic valve 24 can quickly and accurately act to supply the accident water 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 operation of the casting machine.

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

[0056] Specifically, in the preparation mode of the casting machine, the cooling water supply for the casting process of the casting machine is prepared, that is, the water is supplied through the normal water supply system, and the accident water can 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, the fourth pneumatic valve 24 is controlled to be closed, and the third pneumatic valve 21 is controlled to be opened, so that the accident water supply circuit is in a prepared state, and the accident water can supply the cooling water to the casting machine in time in the event of a failure of the normal water supply circuit. At the same time, since the prepared state does not require the casting machine to be actually supplied with water, the accident water needs to be controlled, the state of the third pneumatic valve 21 is adjusted according to a comparison result of the cooling water inlet pressure and the first preset pressure, to avoid that the accident water enters the cooling pipeline of the casting machine in the prepared state.

[0057] S300, when the casting machine is in the pouring mode, 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.

[0058] Specifically, when the casting machine is in the pouring mode, that is, the casting machine starts to operate, 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 preset control logic, so that the normal water supply circuit is kept unblocked, and the accident water supply circuit is kept in a prepared state, so that the normal water supply circuit and the accident water supply circuit supply water to the casting machine under the set rules.

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

[0060] Specifically, when the casting machine is in a failure mode, the failure 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 for the casting machine, the state of the second pneumatic valve 12 and the fourth pneumatic valve 24 is adjusted according to the cooling water inlet pressure and the second preset pressure, and 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, avoiding the accident water from entering the normal water treatment equipment A to pollute the normal water.

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

[0062] controlling the first manual valve 22 and the second manual valve 25 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 caster is in an abnormal production state in the maintenance mode, the water pump of the normal water treatment device A is operated at a low frequency, low-pressure normal water enters the cooling water pipeline of the caster through the opened first pneumatic valve 11 and the first check valve 13, and flows back to the normal water treatment device A after absorbing heat of the caster, at this time, the cooling water inlet pressure is lower than the first preset pressure (6.5 bar), the normal water supply circuit and the emergency water supply circuit are both in a low-pressure alarm state, the cooling water in the caster 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 relationship state. To ensure that the emergency water can smoothly enter the cooling system of the caster in the case of an emergency, the third pneumatic valve 21 and the fourth pneumatic valve 24 need to be tested for action to ensure that the third pneumatic valve 21 and the fourth pneumatic valve 24 will not be blocked and cannot 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, which is to prevent the emergency water from entering the normal water supply circuit and polluting the normal water during the test. Since the caster is in the maintenance mode, the pressure of the cooling water inlet is lower than the first preset pressure, at this time, the pressure of the cooling water inlet is increased, and when the pressure of the cooling water inlet 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 it needs to be checked and repaired to eliminate hidden troubles. Similarly, when the pressure of the cooling water inlet is less than the second preset pressure, the fourth pneumatic valve 24 should be switched to the open state according to the control logic, and whether the fourth pneumatic valve 24 is switched to the open state is used to judge whether the function of the fourth pneumatic valve 24 is normal. Through the test of the third pneumatic valve 21 and the fourth pneumatic valve 24, it can be ensured that the functions of the third pneumatic valve 21 and the fourth pneumatic valve 24 are normal, so that the emergency water supply can be normally opened and the cooling water can be provided for the caster when needed, thereby ensuring the safety of the caster operation.

[0064] Optionally, the adjusting the state of the third pneumatic valve 21 and the fourth pneumatic valve 24 according to the comparison result of the pressure of the cooling water inlet of the caster and the first preset pressure comprises:

[0065] when the pressure of the cooling water inlet is greater than or equal to the first preset pressure, controlling the third pneumatic valve 21 to be opened and controlling the fourth pneumatic valve 24 to be closed;

[0066] when the pressure of the cooling water inlet is less than the first preset pressure, controlling the third pneumatic valve 21 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 emergency water can directly provide cooling water for 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 open, 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 supply pressure of the emergency water (3.5 bar) is less than the supply pressure of the normal water (8.5 bar), that is, less than the cooling water inlet pressure, the emergency water is cut off at the outlet of the second check valve 23 under the action of the cooling water supply pressure, and cannot enter the normal water supply circuit and the cooling pipeline of the casting machine. When the cooling water inlet pressure is less than the preset pressure, the third pneumatic valve 21 needs to be controlled to switch from the open state to the closed state to avoid pollution of the normal water by the emergency water in the preparation state.

[0068] Optionally, the control 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 the preset control logic comprises:

[0069] controlling the first pneumatic valve 11, the second pneumatic valve 12 and the third pneumatic valve 21 to be open, and controlling the fourth pneumatic valve 24 to be closed.

[0070] Specifically, when all valve opening and closing signals and sensor signals of the casting machine in the preparation mode are in place according to the control logic, the operator operates the casting machine to switch to the casting mode, the casting machine end normally works to pull the blank, and at the same time, the first pneumatic valve 11, the second pneumatic valve 12 and the third pneumatic valve 21 are controlled to remain in 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, ensuring the safe and stable operation of the casting machine, and the fourth pneumatic valve 24 is controlled to remain in the closed state, so that the normal water can be prevented from entering the emergency water return circuit, avoiding waste of the normal water.

[0071] Optionally, the adjustment of 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 comprises:

[0072] when the cooling water inlet pressure is less 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 open.

[0073] Specifically, during the operation of the casting machine, when the pressure of the cooling water inlet is detected to be less than the second preset pressure, the fourth pneumatic valve 24 in the emergency water circuit is first switched from the closed state to the open state, and the second pneumatic valve 12 in the normal water circuit is switched from the open state to the closed state, so that the emergency water flowing through the casting machine after absorbing heat can enter the emergency water pool C through the fourth pneumatic valve 24. Since the water quality of the emergency water supply is poorer than that of the normal water supply, in order to avoid polluting the normal water in the normal water treatment equipment A, the emergency return water is led to the emergency water pool C. It should be noted that the second preset pressure is set to be less than or equal to the supply pressure of the emergency water, so that when the pressure of the cooling water inlet is less than the pressure, the emergency water can be directly sent to the cooling pipeline of the casting machine under the pressure of the emergency water to provide cooling water for the casting machine.

[0074] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be completed by a computer program instructing related hardware, and the program can be stored in a computer-readable storage medium. When the program is executed, it can include the processes of the above-mentioned embodiments. The storage medium can be a magnetic disc, an optical disc, a read-only memory (ROM) or a random access memory (RAM), etc. In this application, the units described as separate components can or can not be physically separated, and the components displayed as units can or can not be physical units, i.e., they can be located in one place or distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiments of the present application. In addition, the functional units in each embodiment of the present application can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit.

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

Claims

1. A cooling system, characterized by, The normal water treatment equipment, the emergency water pool, the emergency water source, the first pneumatic valve (11), the second pneumatic valve (12), the third pneumatic valve (21), the fourth pneumatic valve (24), the first manual valve (22), the second manual valve (25), the first check valve (13) and the second check valve (23) are connected, the water outlet of the normal water treatment equipment is connected with the water inlet of the first pneumatic valve (11), the water outlet of the first pneumatic valve (11) is connected with the water inlet of the first check valve (13), the water outlet of the first check valve (13) is used for being connected with the cooling water inlet of the casting machine, the water inlet of the second pneumatic valve (12) is used for being connected with the cooling water outlet of the casting machine, the water outlet of the second pneumatic valve (12) is connected with the water return port of the normal water treatment equipment, the water outlet of the emergency water source is connected with the water inlet of the first manual valve (22), the water outlet of the first manual valve (22) is connected with the water inlet of the third pneumatic valve (21), the water outlet of the third pneumatic valve (21) is connected with the water inlet of the second check valve (23), the water outlet of the second check valve (23) is used for being connected with the cooling water inlet, the water inlet of the fourth pneumatic valve (24) is used for being connected with the cooling water outlet, the water outlet of the fourth pneumatic valve (24) is connected with the water inlet of the second manual valve (25), and the water outlet of the second manual valve (25) is connected with the water return port of the emergency water pool.

2. The cooling system of claim 1, wherein, A compressed air storage tank is further connected with 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 of claim 1, wherein, A filter assembly is further included, which comprises a filter (14), a third manual valve (14), a fourth manual valve (16) and a fifth manual valve (17), the water inlet of the third manual valve (14) is connected with the water outlet of the first check valve (13), the water outlet of the third manual valve (14) is connected with the water inlet of the filter (14), the water outlet of the filter (14) is connected with the water inlet of the fourth manual valve (16), the water outlet of the fourth manual valve (16) is connected with the cooling water inlet of the casting machine, the water inlet of the fifth manual valve (17) is connected with the water outlet of the first check valve (13), and the water outlet of the fifth manual valve (17) is connected with the water outlet of the fourth manual valve (16).

4. The cooling system of claim 1, wherein, A first pressure sensor (18) is further included, which is arranged at the cooling water inlet of the casting machine.

5. The cooling system of claim 1, wherein, A second pressure sensor (26) is further included, which is arranged between the third pneumatic valve (21) and the second check valve (23).

6. A control method of a cooling system, characterized by, The cooling system according to any one of claims 1 to 5; the control method of the cooling system comprises: When the caster is in a 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 caster is in a preparation mode, the state of the third pneumatic valve (21) is adjusted according to a comparison result of the cooling water inlet pressure of the caster and a first preset pressure; When the caster is in a casting 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 caster is in an accident mode, the states of the second pneumatic valve (12) and the fourth pneumatic valve (24) are adjusted according to a comparison result of 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 by, 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) comprises: 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 action tested by controlling the first manual valve (22) and the second manual valve (25) to be closed.

8. The control method of the cooling system according to claim 6, characterized by, The adjusting of 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 of the caster 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 be opened and the fourth pneumatic valve (24) is controlled to be closed; When the cooling water inlet pressure is less than the first preset pressure, the third pneumatic valve (21) is controlled to be closed.

9. The control method of the cooling system according to claim 6, characterized by, 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 the 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 by, The adjusting of 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 comprises: When the cooling water inlet pressure is less 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.

Images