Electrode hydraulic control system of large closed titanium slag electric furnace

Abstract

The utility model relates to the technical field of large-scale closed titanium slag electric furnace electrode hydraulic control systems, in particular to a large-scale closed titanium slag electric furnace electrode hydraulic control system which comprises an OS operation station and a PLC cabinet, the OS operation station controls the PLC cabinet through the Ethernet, the PLC cabinet is externally connected with a control structure, the control structure comprises a shielding control line, and the shielding control line is connected with the PLC cabinet. The PLC cabinet controls the output of the control relay to be frequently opened and closed through a shielding control line, the control relay is connected with an independent power supply cabinet through a shielding control line, the control relay is electrically connected with a normally open contact of the relay, and a hydraulic cylinder is arranged outside the independent power supply cabinet. The intermediate relay of the electrode descending one-way valve of the electrode hydraulic control system of the large closed titanium slag electric furnace is replaced by a domestic solid-state relay, the carbonization phenomenon does not exist, the replacement period can be prolonged, an independent power supply is used for supplying power, stability and reliability are achieved, action is sensitive, and parameter adjustment and control are more stable; the practicability and the service life of the device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of large-scale enclosed titanium slag electric furnace electrode hydraulic control system, in particular to a large-scale enclosed titanium slag electric furnace electrode hydraulic control system. Background Art

[0002] In the process of industrial titanium slag electric furnace smelting production, the electrode hydraulic control system determines the smooth progress of production. The electrode lifting automatic control system mainly controls the electrode lifting according to the control principle of constant power or constant resistance based on the collected arc current, arc voltage, furnace pressure, gear setting and other signals. Therefore, the hydraulic system is required to operate stably and reliably.

[0003] The existing large-scale closed titanium slag electric furnace adopts advanced imported proportional valves and other equipment in the electrode hydraulic system and electrical and automation control, uses PLC power supply common module for power supply, uses intermediate relay control, and adopts a relatively unified electrode control program. During the titanium slag smelting control operation, the action is unreliable, the operation is not stable, the components are seriously damaged, which seriously affects the production and poses a safety hazard. In addition, the procurement cycle of imported equipment is long. Therefore, a large-scale closed titanium slag electric furnace electrode hydraulic control system is urgently needed to solve the above problems. Summary of the invention

[0004] The purpose of the utility model is to provide a large-scale enclosed titanium slag electric furnace electrode hydraulic control system to solve the problems in the above-mentioned background technology that the large-scale enclosed titanium slag electric furnace in the electrode hydraulic system and electrical and automation control adopts advanced imported proportional valves and other equipment, adopts PLC power supply common module power supply, adopts intermediate relay control, and adopts a relatively unified electrode control program. During the titanium slag smelting control operation, the action is unreliable, the operation is not stable, the components are seriously damaged, the production is seriously affected, there are safety hazards, and the imported equipment procurement cycle is long.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a large-scale enclosed titanium slag electric furnace electrode hydraulic control system, comprising: an OS operating station and a PLC cabinet, the OS operating station controls the PLC cabinet via Ethernet, the PLC cabinet is externally connected to a control structure, the control structure comprises a shielded control line, the PLC cabinet controls the frequent disconnection and closing of a control relay output via the shielded control line, the control relay is connected to an independent power supply cabinet via the shielded control line, the control relay is electrically connected to a normally open contact of the relay, a hydraulic cylinder is arranged outside the independent power supply cabinet, one end of the hydraulic cylinder is connected to a polyethylene glycol hydraulic oil inlet pipeline, the other end of the hydraulic cylinder is connected to a polyethylene glycol hydraulic oil return pipeline, the other ends of the polyethylene glycol hydraulic oil inlet pipeline and the polyethylene glycol hydraulic oil return pipeline are connected to a fuel tank.

[0006] Preferably, the independent power supply cabinet provides a stable independent no-load power supply through an isolation transformer and a power supply controller.

[0007] Preferably, the independent power supply cabinet is a fixed relay.

[0008] Preferably, a proportional valve is provided on the polyethylene glycol hydraulic oil inlet pipeline and the polyethylene glycol hydraulic oil return pipeline, and the proportional valve is electrically connected to the solenoid valve.

[0009] Preferably, the mounting structure includes a mounting seat, the mounting seat is arranged outside the isolation transformer, the isolation transformer is installed inside the independent power supply cabinet, the mounting seat is installed with mounting bolts, and the mounting bolts are installed inside the independent power supply cabinet.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The large-scale enclosed titanium slag electric furnace electrode hydraulic control system is provided with a control structure. When the large-scale enclosed titanium slag electric furnace electrode hydraulic control system is used, the control relay output is frequently disconnected and closed through the shielded control line. The independent power supply cabinet provides a stable and independent power supply without other loads through the isolation transformer and the power supply controller. When the output control relay has an output signal, the contactor is energized, the normally open contact of the relay is closed, and the V solenoid valve is energized, thereby controlling the action of the proportional valve. The hydraulic oil passes through the oil tank to allow the electrode lifting pump to be transported to the polyethylene glycol hydraulic oil inlet pipeline to control the lifting of the hydraulic cylinder to control the electrode for smelting. When the hydraulic cylinder is lifted, other oil returns to the oil tank through the polyethylene glycol hydraulic oil return pipeline. Through this design, the intermediate relay of the electrode lowering check valve of the large-scale enclosed titanium slag electric furnace electrode hydraulic control system is replaced by a domestic solid-state relay, which will not have carbonization phenomenon and can extend the replacement cycle. It is powered by an independent power supply, stable and reliable, sensitive in action, parameter adjustment, and more stable in control, which improves the practicality and service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic cross-sectional view of a local structure of the utility model;

[0013] Figure 2 It is a schematic diagram of the working principle of the utility model.

[0014] In the figure: 111, OS operation station; 112, PLC cabinet; 2, control structure; 211, shielded control line; 212, control relay; 213, independent power supply cabinet; 214, isolation transformer; 215, power supply controller; 216, relay normally open contact; 217, hydraulic cylinder; 218, polyethylene glycol hydraulic oil inlet pipeline; 219, polyethylene glycol hydraulic oil return pipeline; 220, proportional valve; 221, oil tank. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] See also Figure 1-2 , an embodiment provided by the utility model:

[0017] A large-scale closed titanium slag electric furnace electrode hydraulic control system includes: an OS operation station 111 and a PLC cabinet 112, the OS operation station 111 controls the PLC cabinet 112 through Ethernet, the PLC cabinet 112 is externally connected to a control structure 2, the control structure 2 includes a shielded control line 211, the PLC cabinet 112 controls the control relay 212 to output frequent disconnection and closing through the shielded control line 211, the control relay 212 is connected to an independent power supply cabinet 213 through the shielded control line 211, and the control relay 212 is connected to a relay normally open contact Point 216 is electrically connected, a hydraulic cylinder 217 is arranged outside the independent power supply cabinet 213, one end of the hydraulic cylinder 217 is connected to a polyethylene glycol hydraulic oil inlet pipeline 218, and the other end of the hydraulic cylinder 217 is connected to a polyethylene glycol hydraulic oil return pipeline 219, and the other ends of the polyethylene glycol hydraulic oil inlet pipeline 218 and the polyethylene glycol hydraulic oil return pipeline 219 are connected to the oil tank 221. Through this design, when the large-scale enclosed titanium slag electric furnace electrode hydraulic control system is used, the output of the control relay 212 is frequently opened and closed through the shielded control line 211. The independent power supply cabinet 213 provides a stable and independent power supply without other loads through the isolation transformer 214 and the power controller 215. When the output control relay 212 has an output signal, the contactor is energized, the normally open contact 216 of the relay is closed, and the 24V solenoid valve is energized, thereby controlling the action of the proportional valve 220. The hydraulic oil is transported to the polyethylene glycol hydraulic oil inlet pipeline 218 through the oil tank 221 by the electrode lifting pump, thereby controlling the lifting of the hydraulic cylinder 217 to control the electrode smelting. When the hydraulic cylinder 217 is lifted, other oil returns to the oil tank 221 through the polyethylene glycol hydraulic oil return pipeline 219.

[0018] Furthermore, the independent power supply cabinet 213 provides a stable independent no-load power supply through the isolation transformer 214 and the power supply controller 215 .

[0019] Furthermore, the independent power supply cabinet 213 is a fixed relay.

[0020] Furthermore, a proportional valve 220 is provided on the polyethylene glycol hydraulic oil inlet pipeline 218 and the polyethylene glycol hydraulic oil return pipeline 219 , and the proportional valve 220 is electrically connected to the solenoid valve.

[0021] Furthermore, the mounting structure 3 includes a mounting base 311, which is arranged outside the isolation transformer 214, and the isolation transformer 214 is installed inside the independent power supply cabinet 213. The mounting base 311 is installed with a mounting bolt 312, and the mounting bolt 312 is installed inside the independent power supply cabinet 213. Through this design, the isolation transformer 214 can be conveniently installed inside the independent power supply cabinet 213 using the mounting base 311 and the mounting bolt 312.

[0022] Working principle:

[0023] When using the large-scale closed titanium slag electric furnace electrode hydraulic control system, the output of the control relay 212 is frequently disconnected and closed through the shielded control line 211. The independent power supply cabinet 213 provides a stable and independent power supply without other loads through the isolation transformer 214 and the power controller 215. When the output control control relay 212 has an output signal, the contactor is energized, the relay normally open contact 216 is closed, and the 24V solenoid valve is energized, thereby controlling the proportional valve 220 to operate. The hydraulic oil is transported to the polyethylene glycol hydraulic oil inlet pipeline 218 through the oil tank 221 by the electrode lifting pump to control the lifting of the hydraulic cylinder 217 to control the electrode smelting. When the hydraulic cylinder 217 is lifted, other oil returns to the oil tank 221 through the polyethylene glycol hydraulic oil return pipeline 219.

[0024] The above are only preferred embodiments of the present invention and are not intended to limit the present invention in any form. Any ordinary technician in the industry can smoothly implement the present invention as shown in the drawings and above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. A large-scale closed titanium slag electric furnace electrode hydraulic control system, comprising: An OS operating station (111) and a PLC cabinet (112), wherein the OS operating station (111) controls the PLC cabinet (112) via Ethernet, and is characterized in that: the PLC cabinet (112) is externally connected to a control structure (2), wherein the control structure (2) comprises a shielded control line (211), and the PLC cabinet (112) controls a control relay (212) to frequently open or close an output via the shielded control line (211), and the control relay (212) is connected to an independent electrical The independent power supply cabinet (213) is electrically connected to the control relay (212) and the normally open contact (216) of the relay. A hydraulic cylinder (217) is arranged outside the independent power supply cabinet (213). One end of the hydraulic cylinder (217) is connected to a polyethylene glycol hydraulic oil inlet pipeline (218). The other end of the hydraulic cylinder (217) is connected to a polyethylene glycol hydraulic oil return pipeline (219). The other ends of the polyethylene glycol hydraulic oil inlet pipeline (218) and the polyethylene glycol hydraulic oil return pipeline (219) are connected to an oil tank (221).

2. A large-scale closed titanium slag electric furnace electrode hydraulic control system according to claim 1, characterized in that: The independent power supply cabinet (213) provides a stable independent no-load power supply via an isolation transformer (214) and a power supply controller (215).

3. A large-scale closed titanium slag electric furnace electrode hydraulic control system according to claim 1, characterized in that: The independent power supply cabinet (213) is a fixed relay.

4. A large-scale closed titanium slag electric furnace electrode hydraulic control system according to claim 1, characterized in that: A proportional valve (220) is provided on the polyethylene glycol hydraulic oil inlet pipeline (218) and the polyethylene glycol hydraulic oil return pipeline (219), and the proportional valve (220) is electrically connected to the solenoid valve.

5. A large-scale closed titanium slag electric furnace electrode hydraulic control system according to claim 2, characterized in that: A mounting seat (311) is provided outside the isolation transformer (214), the isolation transformer (214) is installed inside the independent power supply cabinet (213), mounting bolts (312) are installed inside the mounting seat (311), and the mounting bolts (312) are installed inside the independent power supply cabinet (213).

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