An energy storage emergency processor for the thermal insulation cover of a hot metal ladle car

Abstract

The invention discloses an energy storage emergency treatment device for the thermal insulation cover of a molten iron tank truck, which belongs to the technical field of emergency treatment of hydraulic mechanical systems. The device adopts an energy storage emergency treatment device for the thermal insulation cover of a molten iron tank truck, which comprises a hydraulic system energy storage circuit, a hydraulic system working circuit, a hydraulic system reversing valve operating circuit, and a hydraulic system circuit when there is no power due to mechanical and power failure. When there is no power due to mechanical and power failure, the device can safely and reliably open the thermal insulation cover of the molten iron tank truck through its own hydraulic system energy storage device.

Description

Technical Field

[0001] The present invention relates to the technical field of emergency treatment of hydraulic mechanical systems, and specifically, to an energy storage emergency processor for a hot metal ladle thermal insulation cover. Background Art

[0002] At present, most hot metal ladles in steel mills use thermal insulation covers during the transfer process of hot metal. The purpose is to keep the hot metal temperature from dropping by 20°C to 50°C, avoid energy waste, and at the same time clean the production environment. However, once a power outage or a malfunction occurs during the production process, the thermal insulation cover cannot be opened, and the hot metal in the entire hot metal ladle cannot be poured out, which will cause great economic losses. After novelty search and retrieval, the patent CN 208138226 U discloses a hydraulic system and a lift.

[0003] It adopts a hydraulic system including an oil tank, an electric operating system, a manual operating system, and a valve plate; the valve plate is arranged above the oil tank, one end of the electric operating system is connected to the oil tank, and the other end passes through the valve plate and is connected to the working cylinder; one end of the manual operating system is connected to the oil tank, and the other end passes through the valve plate and is connected to the working cylinder; the manual operating system includes a manual pump and a first hydraulic system oil supply pipe, one end of the first hydraulic system oil supply pipe is connected to the oil tank, the other end of the first hydraulic system oil supply pipe is connected to the working cylinder, and the manual pump is connected to the first hydraulic system oil supply pipe, so that hydraulic oil flows from the oil tank into the working cylinder under the action of the manual pump. This solves the technical problem that in the prior art, the hydraulic system cannot be used normally in the case of a power outage. The manual operating system of the present invention can continue to operate the hydraulic system in the case of a power outage.

[0004] The patent CN 213540871 U discloses a hydraulic system for a milling and grinding vehicle. The technical solution adopted is: during the operation of the milling and grinding vehicle, energy is stored in the accumulator, and hydraulic energy is converted into gas compression energy and stored. When the system needs it, the compression energy is converted back into hydraulic energy and released. With the above settings, the hydraulic system has an emergency function. When the whole vehicle loses power, the milling and grinding device can be lifted away from the rail surface emergently through the accumulator.

[0005] CN 216642598 U patent discloses an emergency hydraulic system and operating machinery. The emergency hydraulic system includes: an emergency hydraulic pump and an electromagnetic reversing valve. The inlet of the electromagnetic reversing valve is connected to the outlet of the emergency hydraulic pump through the emergency oil supply main pipe. The outlet of the electromagnetic reversing valve is connected to the upper hydraulic system and the lower hydraulic system through the upper oil supply pipe and the lower oil supply pipe respectively, so as to provide emergency power hydraulic oil for the upper hydraulic system or the lower hydraulic system. A manual override operating handle is provided on the electromagnetic reversing valve. The manual override operating handle can switch the working position of the electromagnetic reversing valve. When emergency operation is required, the working position of the electromagnetic reversing valve can be switched by electric control so that the upper hydraulic system or the lower hydraulic system can achieve corresponding emergency actions. The working position of the electromagnetic reversing valve can also be switched by the manual override operating handle to achieve corresponding emergency actions. As a result, the reliability and flexibility of the emergency hydraulic system can be greatly improved. Summary of the invention

[0006] In order to solve the above technical problems, the purpose of the present invention is to provide an energy storage emergency processor for the insulation cover of a molten iron tank truck. When the hydraulic mechanical system is out of power or fails and has no power, the insulation cover of the molten iron tank truck can be safely and reliably opened through its own hydraulic system energy storage device.

[0007] The present invention is implemented by adopting such a method: a molten iron tank car insulation cover energy storage emergency processor is installed on the molten iron tank car, and the molten iron tank car insulation cover energy storage emergency processor includes a hydraulic system energy storage circuit, a hydraulic system working circuit, a hydraulic system reversing valve working circuit, and a hydraulic system power-off circuit when there is no power due to mechanical and power failures.

[0008] The hydraulic system energy storage circuit described is as follows: the motor and the hydraulic pump are started, the motor drives the hydraulic pump to work through the coupling, the hydraulic oil passes through the filter, the reversing valve is energized, the hydraulic oil is pressure-regulated by the overflow valve, and after reaching a certain pressure, the hydraulic oil is injected into the accumulator nitrogen cylinder through the one-way valve, the accumulator nitrogen cylinder is equipped with a piston, the hydraulic oil compresses the nitrogen to store energy through the piston, and when the pressure of the accumulator nitrogen cylinder reaches a certain pressure, the one-way valve is automatically closed, and the accumulator nitrogen cylinder stores energy.

[0009] The hydraulic system working circuit described is as follows: the hydraulic oil passes through a filter, the motor coupling drives the hydraulic pump, the oil circuit passes through a pressure-maintaining valve, and then passes through a throttle valve, and then returns to the oil tank through a reversing valve circuit.

[0010] The reversing circuit of the reversing valve A of the hydraulic system: the reversing valve A is energized, the hydraulic oil is pressure-regulated by the relief valve, and after reaching a certain pressure, the hydraulic oil is injected into the nitrogen cylinder of the accumulator through the one-way valve. When the pressure of the nitrogen cylinder of the accumulator reaches a certain pressure, the one-way valve is automatically closed, and the hydraulic oil is injected into the oil cylinder A in four ways through the first synchronous diverter. The oil cylinder A starts to work, and the A cavity rises, slowly raising the insulation cover to the top, the insulation cover is uncovered, and the limit switch works to close the oil circuit.

[0011] The reversing circuit of the reversing valve B of the hydraulic system: the reversing valve B is energized, the hydraulic oil is regulated by the overflow valve, and after reaching a certain pressure, the hydraulic oil is injected into the B chamber of the descending cylinder through the second synchronizer diverter in four ways. The B chamber of the cylinder is forced to descend, and the insulation cover is slowly closed to the lowest point, the insulation cover is closed, and the limit switch closes the reversing valve. Stop running.

[0012] The hydraulic system circuit in the case of mechanical and power failure without power:

[0013] Manually open the first manual ball valve, and the nitrogen in the accumulator nitrogen cylinder is injected into the four cylinder chambers through the first synchronous diverter. Under the action of nitrogen, the four cylinders B push the four cylinder B chambers to descend and work. At the same time, manually open the second manual ball valve slowly, and the hydraulic oil in the four cylinder A chambers passes through the second synchronous diverter and the second manual ball valve to unload the hydraulic oil in the four cylinder A chambers, and the hydraulic oil returns to the oil tank, and the insulation cover is opened (opened).

[0014] Furthermore, the pressure of the nitrogen cylinder of the accumulator is 5-8mPa.

[0015] Furthermore, the pressure-maintaining valve automatically opens at a pressure of 2.5 mPa when the reversing valve AB is working. When the reversing valve stops working, the pressure-maintaining valve automatically closes the hydraulic system.

[0016] Furthermore, nitrogen is injected into the nitrogen cylinder of the energy storage tank before operation.

[0017] The beneficial effects of the present invention are as follows: 1. The structure of the device is simple and the design is reasonable. 2. In the case of power failure or failure, the insulation cover of the molten iron tank car can be safely and reliably opened through the mechanical power storage device itself. 3. The accumulator nitrogen cylinder of the device can push 30 tons of gravity at 5-8mPa. 4. The device is also suitable for gravity doors or other mobile opening devices in emergency situations.

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work. Description of the Drawings

[0019] The Figure 1 The block diagram of the hydraulic energy storage system of the present invention is given

[0020] Description of the block diagram symbols: 1. Motor; 2. Hydraulic pump; 3. Pressure maintaining valve; 4. Throttle valve; 5. Directional control valve; 6. Relief valve; 7. Nitrogen cylinder of accumulator; 8. Check valve; 9. First manual ball valve; 10. Second manual ball valve; 11. First synchronous flow divider; 12. Second synchronous flow divider; 13. First oil cylinder; 14. Second oil cylinder; 15. Third oil cylinder; 16. Fourth oil cylinder; 17. Oil tank; 18. Coupling; 19. Filter. Detailed Embodiment

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. As shown in the accompanying drawings: An energy storage emergency processor for the thermal insulation cover of a hot metal ladle car is installed on the hot metal ladle car. An energy storage emergency processor for the thermal insulation cover of a hot metal ladle car includes a hydraulic system energy storage circuit, a hydraulic system working circuit, a hydraulic system directional control valve circuit, and a hydraulic system circuit in the case of mechanical and power failures without power.

[0022] Hydraulic system energy storage circuit: The motor 1 and the hydraulic pump 2 are started. The motor 1 drives the hydraulic pump 2 to work through the coupling 18. The hydraulic oil passes through the filter 19, and the directional control valve 5A is energized. The hydraulic oil is regulated by the relief valve 6. After reaching a certain pressure, the hydraulic oil is injected into the nitrogen cylinder 7 of the accumulator through the check valve 8. A piston is installed in the nitrogen cylinder 7 of the accumulator. The hydraulic oil compresses nitrogen through the piston for energy storage. When the pressure in the nitrogen cylinder 7 of the accumulator reaches a certain pressure, the check valve 8 automatically closes, and the nitrogen cylinder 7 of the accumulator stores energy.

[0023] Hydraulic system working circuit: The hydraulic oil passes through the filter 19, is driven by the coupling 18 of the motor 1 to the hydraulic pump 2, the oil circuit passes through the pressure maintaining valve 3, and then through the throttle valve 4, and returns to the oil tank 17 through the directional control valve 5 circuit.

[0024] Hydraulic system directional valve A commutation circuit: When the directional valve A is energized, the hydraulic oil is regulated by the relief valve 6. After reaching a certain pressure, the hydraulic oil is injected into the accumulator nitrogen cylinder 7 through the check valve 8. When the pressure in the accumulator nitrogen cylinder 7 reaches a certain value, the check valve 8 automatically closes, and the hydraulic oil is divided into four paths through the first synchronous diverter 12 and injected into the A chambers of the oil cylinders, namely the A chambers of the first oil cylinder 13, the second oil cylinder 14, the third oil cylinder 15, and the fourth oil cylinder 16. The A chambers of the first oil cylinder 13, the second oil cylinder 14, the third oil cylinder 15, and the fourth oil cylinder 16 rise, slowly lifting the heat preservation cover to the top. The heat preservation cover is opened, and the limit switch works to close the oil circuit.

[0025] Hydraulic system directional valve B commutation circuit: When the directional valve 5B is energized, the hydraulic oil is regulated by the relief valve 6. After reaching a certain pressure, the hydraulic oil is divided into four paths through the second synchronous diverter 11 and injected into the B chambers of the oil cylinders, forcing the B chambers of the first oil cylinder 13, the second oil cylinder 14, the third oil cylinder 15, and the fourth oil cylinder 16 to descend. At the same time, the heat preservation cover is slowly closed to the lowest point. The heat preservation cover is closed, and the limit switch closes the directional valve 5. The operation stops.

[0026] The hydraulic system circuit in the case of mechanical and power supply failures without power:

[0027] Open the first manual ball valve 9. The nitrogen in the accumulator nitrogen cylinder 7 passes through the first synchronous diverter 12 and is respectively injected into the B chambers of the four oil cylinders, namely the B chambers of the first oil cylinder 13, the second oil cylinder 14, the third oil cylinder 15, and the fourth oil cylinder 16. Under the action of nitrogen, the B chambers of the four oil cylinders are pushed to descend and work. At the same time, slowly open the second manual ball valve 10 manually. The hydraulic oil in the A chambers of the four oil cylinders passes through the second synchronous diverter 11 and the second manual ball valve 10, unloading the hydraulic oil in the A chambers of the four oil cylinders. The hydraulic oil returns to the oil tank 17, and the heat preservation cover is opened (uncovered).

[0028] For the said directional valve 5, when the directional valve 5A is energized, oil flows out from the A oil circuit. When the directional valve 5B is energized, oil flows out from the B oil circuit. A working cycle is completed.

[0029] Open the first manual ball valve 9. Nitrogen is injected into the B chambers of the four oil cylinders by the synchronous first synchronous diverter. At the same time, open the second manual ball valve 10 to unload the hydraulic oil in the A chambers of the four oil cylinders, completing the work of the hydraulic system actuators when power is off.

[0030] The pressure of the accumulator nitrogen cylinder 7 is 5 - 8 mPa.

[0031] Nitrogen is injected into the accumulator nitrogen cylinder 7 before work.

[0032] Nitrogen is usually called an inert gas. Nitrogen is almost an inert diatomic gas with extremely inactive chemical properties. The gas molecules are larger than oxygen molecules, not easy to expand and contract thermally, and the deformation amplitude is small.

[0033] When the pressure-holding valve 3 is working while the directional control valve 5AB is operating, it automatically opens at a pressure of 2.5 mPa. When the directional control valve 5 stops running, the pressure-holding valve 3 automatically closes the hydraulic system. The function of the pressure-holding circuit is to keep the pressure of the hydraulic transmission system stable and unchanged under the conditions that the hydraulic cylinder does not move or there is a small displacement due to workpiece deformation. The two main indicators of the pressure-holding performance are pressure stability and pressure-holding time.

[0034] The throttle valve 4 mentioned above can manually adjust the flow rate of the hydraulic oil.

[0035] For the relief valve 6 mentioned above, when the required pressure is set and the pressure is greater than the set pressure, the relief valve 6 automatically opens, and the pressure oil higher than the set pressure is unloaded while the set pressure remains unchanged.

[0036] Four hydraulic cylinders are connected to the actuator through pistons.

[0037] The heat-insulating cover mentioned above is the heat-insulating cover of the molten iron ladle car. The heat-insulating cover is in the form of a split cover that can be lifted.

[0038] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An energy storage emergency processor for the thermal insulation cover of a hot metal ladle car, which is an energy storage device adopted by a hydraulic system, is characterized in that: An energy storage emergency processor for the thermal insulation cover of a molten iron ladle car comprises a hydraulic system energy storage circuit, a hydraulic system working circuit, a hydraulic system reversing valve (5) circuit, and a hydraulic system circuit in the case of mechanical and power supply failures without power; The hydraulic system energy storage circuit: The motor (1) and the hydraulic pump (2) are started. The motor (1) drives the hydraulic pump (2) to work through the coupling (18). The hydraulic oil passes through the filter (19), and the reversing valve (5) A is energized. The hydraulic oil is regulated by the relief valve (6). After reaching a certain pressure, the hydraulic oil is injected into the accumulator nitrogen cylinder (7) through the check valve (8). The nitrogen in the accumulator nitrogen cylinder (7) compresses the nitrogen through the piston. When the pressure in the accumulator nitrogen cylinder (7) reaches a certain pressure, the check valve (8) automatically closes, and the accumulator nitrogen cylinder (7) stores energy; The hydraulic system working circuit: The hydraulic oil passes through the filter (19), is driven by the coupling (18) of the motor (1) to drive the hydraulic pump (2), the oil circuit passes through the pressure maintaining valve (3), and then passes through the throttle valve (4), and returns to the oil tank (17) through the reversing valve (5) circuit; The hydraulic system reversing valve (5) B reversing circuit: The reversing valve (5) B is energized. The hydraulic oil is regulated by the relief valve (6). After reaching a certain pressure, the hydraulic oil is injected into the accumulator nitrogen cylinder (7) through the check valve (8). When the pressure in the accumulator nitrogen cylinder (7) reaches a certain pressure, the check valve (8) automatically closes. The hydraulic oil is divided into four paths through the first synchronous shunt (12) and injected into the B chambers of the cylinders, namely the B chambers of the first cylinder (13), the B chamber of the second cylinder (14), the B chamber of the third cylinder (15), and the B chamber of the fourth cylinder (16). The B chambers of the first cylinder (13), the B chamber of the second cylinder (14), the B chamber of the third cylinder (15), and the B chamber of the fourth cylinder (16) descend, slowly lowering the thermal insulation cover to the lowest point, and the limit switch works to close the oil circuit; The hydraulic system reversing valve (5) A reversing circuit: The reversing valve (5) A is energized. The hydraulic oil is regulated by the relief valve (6). After reaching a certain pressure, the hydraulic oil is divided into four paths through the second synchronous shunt (11) and injected into the A chambers of the cylinders, namely the A chamber of the first cylinder (13), the A chamber of the second cylinder (14), the A chamber of the third cylinder (15), and the A chamber of the fourth cylinder (16), forcing the A chambers of the first cylinder (13), the A chamber of the second cylinder (14), the A chamber of the third cylinder (15), and the A chamber of the fourth cylinder (16) to rise. The A chambers of the cylinders rise, the thermal insulation cover closes, and the limit switch closes the reversing valve (5) A to stop the operation; The accumulator nitrogen cylinder (7), the nitrogen outlet end is connected to the first manual ball valve (9) through a pipeline, and the first manual ball valve (9) is connected to the first synchronous shunt (12) through a pipeline: The hydraulic system circuit in the case of mechanical and power supply failures without power: Open the first manual ball valve (9) to open the circuit of the accumulator nitrogen cylinder (7). Nitrogen gas passes through the first synchronous flow divider (12) to push the B chambers of the four oil cylinders, namely the B chambers of the first oil cylinder (13), the second oil cylinder (14), the third oil cylinder (15), and the fourth oil cylinder (16). At the same time, slowly open the second manual ball valve (10) manually to unload the A chambers of the four oil cylinders, namely the A chambers of the first oil cylinder (13), the second oil cylinder (14), the third oil cylinder (15), and the fourth oil cylinder (16), and unload the hydraulic oil. The hydraulic oil returns to the oil tank (17), and the thermal insulation cover is lifted off. The four oil cylinders are connected to the actuator through pistons, and the thermal insulation cover is of a split-lifting type.

2. The energy storage emergency processor for the hot metal ladle car thermal insulation cover according to claim 1, characterized in that: For the described directional control valve (5), when the directional control valve (5) A is energized, the A oil circuit discharges oil, and when the directional control valve (5) B is energized, the B oil circuit discharges oil, completing a working cycle.

3. The energy storage emergency processor for the hot metal ladle car thermal insulation cover according to claim 1, characterized in that: The pressure of the accumulator nitrogen cylinder (7) is 5 - 8 mPa.

4. The energy storage emergency processor for the hot metal ladle car thermal insulation cover according to claim 1, characterized in that: Nitrogen gas is injected into the accumulator nitrogen cylinder (7) before operation.

5. The energy storage emergency processor for the hot metal ladle car thermal insulation cover according to claim 1, characterized in that: When the directional control valve (5) AB is working, the described pressure-holding valve (3) automatically opens at a pressure of 2.5 mPa. When the directional control valve (5) stops running, the pressure-holding valve (3) automatically closes the hydraulic system.

6. The energy storage emergency processor for the hot metal ladle car thermal insulation cover according to claim 1, characterized in that: For the described overflow valve (6), when the required pressure is set and the pressure is greater than the set pressure, the overflow valve (6) automatically opens, and the hydraulic oil with a pressure higher than the set pressure is unloaded, while the set pressure remains unchanged.

Images