High-pressure water dephosphorization control device

Abstract

The utility model relates to a high-pressure water dephosphorization control device, a pneumatic gate valve comprises a valve seat and an air cylinder, one end of the valve seat is respectively connected with a high-pressure water dephosphorization device and a second water outlet of a water tank through pipelines, the other end of the valve seat is connected with a first water outlet of the water tank through a high-pressure water pump through a pipeline, and an air inlet of an electromagnetic reversing valve is connected with an air source. A first working air port and a second working air port of the electromagnetic reversing valve are connected with a first air inlet and a second air inlet in the two sides of the air cylinder respectively, one end of the electromagnetic valve is connected with a fourth water outlet of the water tank, and the other end of the electromagnetic valve is connected with a water outlet and a third water outlet of the water tank respectively. The utility model has the advantages that the air cylinder is used as an execution element, and the electromagnetic directional valve drives the air cylinder, so that the response speed is high, the occupied area is small, the water inlet hidden danger is reduced, the failure rate is reduced, and the maintenance cost is reduced; when the service valve is closed, the damaged high-pressure water pump or the filter or the air cylinder can be replaced on line without stopping production for replacement.

Description

Technical Field

[0001] The utility model relates to the technical field of dephosphorization devices for steel billet production, in particular to a high-pressure water dephosphorization control device. Background Art

[0002] The steel billet is oxidized at high temperature, forming a dense layer of iron oxide scale, namely phosphorus scale, on its surface. If this layer of iron oxide scale cannot be removed before rolling, it will be pressed into the surface of the strip by the roller during the rolling process, affecting its surface quality; the residual iron oxide scale will also accelerate the wear of the roller and reduce the service life of the roller; if the strip needs to be pickled, the residual iron oxide scale will increase the difficulty of pickling and increase acid consumption. Therefore, the iron oxide scale on the surface must be removed before the steel billet is rolled. At present, the most common and effective method is to use the impact force of high-pressure water to remove the iron oxide scale, namely high-pressure water dephosphorization.

[0003] The high-pressure water dephosphorization control device of the furnace roller table in the high-speed production workshop of a steel plant is controlled by a hydraulic system. The hydraulic system is composed of oil tanks, control valves, pipelines, hydraulic cylinders and other components. Failures occur frequently during use, the fault points are difficult to find, the maintenance volume is large, water inflow and oil leakage are frequent, and fault recovery is difficult, which urgently needs improvement. Summary of the invention

[0004] The utility model aims to provide a high-pressure water dephosphorization control device, which solves the problems of water inflow and oil leakage, has simple process, low maintenance cost, improved production efficiency and reduced failure rate.

[0005] To achieve the above purpose, the utility model is implemented through the following technical solutions:

[0006] A high-pressure water dephosphorization control device comprises a pneumatic gate valve, an electromagnetic reversing valve, a solenoid valve, a water tank, a liquid level sensor, a high-pressure water pump, a frequency converter, and a control unit. The pneumatic gate valve comprises a valve seat and a cylinder. One end of the valve seat is respectively connected to the high-pressure water dephosphorization device and the water outlet two of the water tank through a pipeline, the other end of the valve seat is connected to the water outlet one of the water tank through a pipeline through the high-pressure water pump, the air inlet of the electromagnetic reversing valve is connected to an air source, the working air port one and the working air port two of the electromagnetic reversing valve are respectively connected to the air inlet one and the air inlet two on both sides of the cylinder, one end of the electromagnetic valve is connected to the water outlet four of the water tank, the other end of the electromagnetic valve is respectively connected to the drain port and the water outlet three of the water tank, the water inlet of the water tank is connected to the water supply main line, the liquid level sensor is used to detect the liquid level of the water tank, a filter is arranged between the valve seat and the high-pressure water pump, and the frequency converter is used to drive the high-pressure water pump to operate; the electromagnetic valve, the electromagnetic reversing valve, the liquid level sensor, and the frequency converter are respectively connected to the control unit through ports.

[0007] The control unit includes a CPU module, a communication module, and a touch screen. The CPU module is connected to the communication module through a port, the CPU module is connected to the touch screen through a port, the digital output port of the CPU module is connected to the coil of the relay group 1, and the normally open contact of the relay group 1 is respectively connected to the solenoid valve, the solenoid reversing valve, the coil of the relay group 2, and the coil of the contactor;

[0008] The normally open contacts of relay group 2 are respectively connected to the digital input ports of the frequency converter; the power input terminal of the frequency converter is connected to the AC power source 1 through the main contacts of the contactor, the power output terminal of the frequency converter is connected to the high-pressure water pump, the communication terminal of the frequency converter is connected to a communication card, and the communication card is connected to the communication module;

[0009] The liquid level sensor is connected to the digital input port of the CPU module.

[0010] Relay group 1 and relay group 2 each include a plurality of relays.

[0011] The control unit also includes a power module, which is used to provide working power, and an input end of the power module is connected to an AC power source 2.

[0012] The control unit is PLC.

[0013] It also includes several inspection valves. An inspection valve is arranged between the high-pressure water pump and the water tank, an inspection valve is arranged between the electromagnetic reversing valve and the cylinder, and an inspection valve is arranged at the inlet and outlet of the filter.

[0014] The inspection valve is a manual valve.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The cylinder is used as the actuator, and the electromagnetic reversing valve drives the cylinder to move, which has a fast response speed, small footprint, reduced water ingress hazards, reduced failure rate, and reduced maintenance costs;

[0017] 2. Closing the inspection valve allows online replacement of damaged high-pressure water pumps, filters or cylinders without stopping production for replacement;

[0018] 3. The digital output port of the CPU module is connected to the coil of relay group 1, and the normally open contact of relay group 1 is connected to the coil of the solenoid valve, solenoid reversing valve, relay group 2, and contactor to avoid damage to the digital output port of the CPU module due to failure of the solenoid valve, solenoid reversing valve, relay group 2, and contactor;

[0019] 4. The liquid level sensor is used to facilitate operators to check the liquid level status of the water tank at any time. If the liquid level exceeds the set value, the touch screen will give an alarm prompt, which is convenient for production management;

[0020] 5. The inverter uses a communication card and a communication cable to connect the communication module, which reduces the wiring required by maintenance personnel and makes operation convenient. At the same time, the inverter can self-diagnose and display the fault of the high-pressure water pump, and display the fault information through the touch screen, making maintenance simple;

[0021] 6. The operator can input different speed set values ​​through the touch screen according to the actual situation to realize the operation of the high-pressure water pump at different speeds; the operator can start and stop the solenoid valve and solenoid reversing valve through the touch screen, and check the operating status of the equipment at any time. The fault query is simple, intuitive, time-saving and labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the high-pressure water phosphorus removal control device.

[0023] In the figure: 1-water tank 2-solenoid valve 3-inspection valve 4-valve seat 5-solenoid reversing valve 6-high-pressure water pump 1 7-high-pressure water pump 2 8-working air port 1 9-working air port 2 10-air inlet 11-air inlet 1 12-air inlet 2 13-cylinder 14-piston rod. DETAILED DESCRIPTION

[0024] The present invention is described in detail below in conjunction with the accompanying drawings of the specification, but it should be noted that the implementation of the present invention is not limited to the following embodiments.

[0025] The following examples are implemented based on the technical solution of the utility model, and provide detailed implementation methods and specific operation processes, but the protection scope of the utility model is not limited to the following examples. The methods used in the following examples are conventional methods unless otherwise specified.

[0026] [Example 1]

[0027] The high-pressure water dephosphorization control device of the roller table of the high-speed production workshop is controlled by a hydraulic cylinder. The hydraulic station is shared with the furnace area. When the rod seal of the hydraulic cylinder is damaged, the hydraulic oil is easy to enter the water. The hydraulic oil has poor oil-water separation. Long-term use of hydraulic oil with high water content will cause the hydraulic components and actuators to wear more and even damage. Now the cylinder is replaced by an air cylinder. Figure 1A high-pressure water dephosphorization control device comprises a pneumatic gate valve, an electromagnetic reversing valve 5, a drainage electromagnetic valve 2, a water tank 1, a liquid level sensor S1, a liquid level sensor S2, a high-pressure water pump, a frequency converter, a maintenance valve 3, and a control unit. The pneumatic gate valve comprises a valve seat 4 and a cylinder 13. The piston rod 14 of the cylinder 13 drives the valve shaft in the valve seat 4. One end of the valve seat 4 is respectively connected to the high-pressure water dephosphorization device and the water outlet 2 of the water tank 1 through a pipeline. The other end of the valve seat 4 is connected to the water outlet 1 of the water tank 1 through a pipeline through the high-pressure water pump. The high-pressure water pump comprises a high-pressure water pump 16 and a high-pressure water pump 17. The frequency converter comprises a frequency converter 1 and a frequency converter 2. The frequency converter 1 is used to drive the high-pressure water pump 16 to operate, and the frequency converter 2 is used to drive the high-pressure water pump 17 to operate. The working mode of the high-pressure water pump 16 and the high-pressure water pump 17 is one working and one standby. The electromagnetic reversing valve 5 The air inlet 10 is connected to the air source, the working air port 1 8 and the working air port 2 9 of the electromagnetic reversing valve 5 are respectively connected to the air inlet 11 and the air inlet 2 12 on both sides of the cylinder 13, one end of the drain solenoid valve 2 is connected to the water outlet 4 of the water tank 1, and the other end of the drain solenoid valve 2 is respectively connected to the drain port and the water outlet 3 of the water tank 1, the liquid level sensor S1 is used to detect the low liquid level of the water tank 1, and the liquid level sensor S2 is used to detect the high liquid level of the water tank 1, a filter is arranged between the valve seat 4 and the high-pressure water pump, a maintenance valve 3 is arranged at the inlet of the high-pressure water pump 16 and the high-pressure water pump 17, a maintenance valve 3 is arranged between the electromagnetic reversing valve 5 and the cylinder 13, and the inlet and outlet of the filter are both provided with maintenance valves 3, and the maintenance valve 3 is a manual valve. By closing the maintenance valve 3, the damaged high-pressure water pump or filter or cylinder 13 can be replaced without affecting the production operation. The cylinder 13 is used as the actuator, and the electromagnetic reversing valve 5 drives the cylinder 13, which has a fast response speed, a small footprint, reduces the hidden danger of water ingress, reduces the failure rate, and reduces the maintenance cost.

[0028] Working process:

[0029] Water enters the water tank from the main water supply line. The water in the water tank enters the self-cleaning filter after being pressurized by high-pressure water pump 1 or high-pressure water pump 1, and then is transmitted to high-pressure water dephosphorization through the pneumatic gate valve. When the production console displays the "steel signal", the working time of the high-pressure water dephosphorization device is controlled by the delay time of the steel rod action. When the billet arrives in front of the descaling box, the descaling starts, and the electromagnetic reversing valve that controls the action of the pneumatic gate valve is powered on and opened. At this time, the piston rod of the pneumatic gate valve retracts, the pneumatic gate valve opens, and high-pressure water descales the billet through the pipeline and nozzle; the pneumatic gate valve is closed 1-2 seconds after the billet passes; the cycle repeats.

[0030] [Example 2]

[0031] In this embodiment, a high-pressure water dephosphorization control device is the same as Example 1, on the basis of which the principle of a control unit is added. The control unit is a PLC, which includes a CPU module, a communication module, a touch screen, and a power module. The power module is used to provide a working power supply. The input end of the power module is connected to the AC power supply AC220V, the CPU module is connected to the communication module through a port, the CPU module is connected to the touch screen through a port, the digital output port of the CPU module is connected to the coils of relays K1 to K8, and the normally open contacts of relays K1 to K8 are respectively used to connect to relays KV1 to KV4, solenoid valve 2D1, solenoid reversing valve 5D2, the coil of contactor KM1, and the coil of contactor KM2; the normally open contacts of relays KV1 to KV4 are respectively connected to the digital input port DI01 of inverter one, the digital input port DI02 of inverter one, and the digital output port DI03 of inverter two The digital input port DI01 of the inverter is connected to the digital input port DI02 of the inverter 2. The digital input port DI01 is the inverter ready port, and the digital input port DI02 is the inverter running port. The power input terminal of the inverter 1 is connected to the AC power supply AC380V through the main contact of the contactor KM1 and the circuit breaker QK1. The power input terminal of the inverter 2 is connected to the AC power supply AC380V through the main contact of the contactor KM2 and the circuit breaker QK2. The power output terminal of the inverter 1 is connected to the high-pressure water pump 16, and the power output terminal of the inverter 2 is connected to the high-pressure water pump 17. The communication terminals of the inverter 1 and the inverter 2 are both connected with a communication card, and the communication card is connected to the communication cable of the communication module. The inverter adopts the communication card to connect the communication cable of the communication module, which reduces the wiring amount of maintenance personnel and is convenient to operate. At the same time, the inverter can self-diagnose and display the fault of the high-pressure water pump, and display the fault information through the touch screen. The digital input port of the CPU module is respectively connected to the liquid level sensor S1, the liquid level sensor S2, the normally open auxiliary contacts of the contactor KM2, the normally open auxiliary contacts of the circuit breaker QK2, the normally open auxiliary contacts of the contactor KM1, the normally open auxiliary contacts of the circuit breaker QK1, the normally open contacts of the relay K12, and the normally open contacts of the relay K11. The coil of the relay K11 and the coil of the relay K12 are respectively connected to the digital output port of the inverter one and the digital output port of the inverter two.

[0032] Working process:

[0033] The touch screen is provided with the start button, stop button, speed setting of high-pressure water pump 1, the start button, stop button, speed setting of high-pressure water pump 2, the start button and stop button of drainage solenoid valve, and the start button and stop button of electromagnetic reversing valve. The button information of the touch screen is sent to PLC, and PLC sends out instruction information to make relays K1~K8 act, so as to realize the start and stop actions of high-pressure water pump 1, high-pressure water pump 2, drainage solenoid valve, and electromagnetic reversing valve. The operator can input different speed setting values ​​through the touch screen according to the actual situation, so as to realize the operation of high-pressure water pump at different speeds. The digital input port of CPU module is connected with liquid level sensor S1 and liquid level sensor S2 respectively, so that the operator can check the liquid level status of water tank at any time. If the liquid level sensor S2 exceeds the set value, the drainage solenoid valve is opened; if the liquid level sensor S2 is lower than the set value, the drainage solenoid valve is closed, and the touch screen has an alarm prompt. The operator can start and stop the equipment by one by one through the touch screen, and check the operation status of the equipment at any time. The fault query is simple, intuitive, and time-saving and labor-saving.

[0034] The utility model adopts a cylinder as an actuator, and an electromagnetic reversing valve drives the cylinder, which has a fast response speed and a small footprint, reduces the hidden danger of water ingress, reduces the failure rate, and reduces the maintenance cost; by closing the inspection valve, a damaged high-pressure water pump, filter, or cylinder can be replaced online without stopping production for replacement; the digital output port of the CPU module is connected to the coil of the relay group one, and the normally open contact of the relay group one is connected to the electromagnetic valve, the electromagnetic reversing valve, the coil of the relay group two, and the coil of the contactor, so as to prevent the electromagnetic valve, the electromagnetic reversing valve, the coil of the relay group two, and the contactor from malfunctioning and causing damage to the digital output port of the CPU module; the utility model adopts a cylinder as an actuator, and an electromagnetic reversing valve drives the cylinder, which has a fast response speed and a small footprint, reduces the hidden danger of water ingress, reduces the failure rate, and reduces the maintenance cost; by closing the inspection valve, a damaged high-pressure water pump, filter, or cylinder can be replaced online without stopping production for replacement; the digital output port of the CPU module is connected to the coil of the relay group one, and the normally open contact of the relay group one is connected to the coil of the electromagnetic valve, the electromagnetic reversing valve, the coil of the relay group two, and the coil of the contactor, so as to prevent the digital output port of the CPU module from being damaged due to malfunction of the electromagnetic valve, the electromagnetic reversing valve, the coil of the relay group two, and the contactor; the utility model adopts a cylinder as an actuator, and an electromagnetic reversing valve drives the cylinder, which has a fast response speed and reduces the failure rate, reduces the maintenance cost; the utility model adopts a cylinder as an actuator, and the ... The position sensor allows operators to check the tank liquid level status at any time. If the liquid level exceeds the set value, the touch screen will give an alarm prompt, which is convenient for production management. The frequency converter uses a communication card and a communication cable to connect the communication module, which reduces the amount of wiring for maintenance personnel and makes operation convenient. At the same time, the frequency converter can self-diagnose and display the fault of the high-pressure water pump, and display the fault information through the touch screen, which makes maintenance simple. Operators can input different speed set values ​​through the touch screen according to actual conditions to make the high-pressure water pump run at different speeds. Operators can start and stop the equipment through the touch screen and check the equipment operation status at any time. Fault query is simple, intuitive, and saves time and effort.

Claims

1. A high-pressure water dephosphorization control device, characterized in that: It includes a pneumatic gate valve, an electromagnetic reversing valve, a solenoid valve, a water tank, a liquid level sensor, a high-pressure water pump, a frequency converter, and a control unit. The pneumatic gate valve includes a valve seat and a cylinder. One end of the valve seat is respectively connected to a high-pressure water dephosphorization device and a water outlet 2 of the water tank through a pipeline, the other end of the valve seat is connected to a water outlet 1 of the water tank through a pipeline through the high-pressure water pump, the air inlet of the electromagnetic reversing valve is connected to an air source, the working air inlet 1 and the working air inlet 2 of the electromagnetic reversing valve are respectively connected to the air inlet 1 and the air inlet 2 on both sides of the cylinder, one end of the solenoid valve is connected to a water outlet 4 of the water tank, the other end of the solenoid valve is respectively connected to a drain and a water outlet 3 of the water tank, the water inlet of the water tank is connected to a water supply main pipeline, the liquid level sensor is used to detect the liquid level of the water tank, a filter is arranged between the valve seat and the high-pressure water pump, and the frequency converter is used to drive the high-pressure water pump to operate; the electromagnetic valve, the electromagnetic reversing valve, the liquid level sensor, and the frequency converter are respectively connected to the control unit through ports.

2. A high-pressure water dephosphorization control device according to claim 1, characterized in that: The control unit includes a CPU module, a communication module, and a touch screen. The CPU module is connected to the communication module through a port, the CPU module is connected to the touch screen through a port, the digital output port of the CPU module is connected to the coil of the relay group 1, and the normally open contact of the relay group 1 is respectively connected to the solenoid valve, the solenoid reversing valve, the coil of the relay group 2, and the coil of the contactor; The normally open contacts of the relay group 2 are respectively connected to the digital input ports of the frequency converter; the power input terminal of the frequency converter is connected to the AC power supply 1 through the main contacts of the contactor, the power output terminal of the frequency converter is connected to the high-pressure water pump, the communication terminal of the frequency converter is connected to a communication card, and the communication card is connected to the communication module; The liquid level sensor is connected to the digital input port of the CPU module.

3. A high-pressure water dephosphorization control device according to claim 2, characterized in that: The relay group 1 and the relay group 2 each include a plurality of relays.

4. A high-pressure water dephosphorization control device according to claim 2, characterized in that: The control unit also includes a power module, which is used to provide working power, and the input end of the power module is connected to the second AC power source.

5. A high-pressure water dephosphorization control device according to claim 4, characterized in that: The control unit is a PLC.

6. A high-pressure water dephosphorization control device according to claim 1, characterized in that: It also includes several inspection valves. An inspection valve is arranged between the high-pressure water pump and the water tank, an inspection valve is arranged between the electromagnetic reversing valve and the cylinder, and an inspection valve is arranged at the inlet and outlet of the filter.

7. A high-pressure water dephosphorization control device according to claim 6, characterized in that: The inspection valve is a manual valve.

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