Control system of blast furnace top hoist motor

Abstract

The invention discloses a control system of a blast furnace top winch motor, belongs to the technical field of iron-making furnace top equipment, and solves the problem that an existing control system cannot completely meet user requirements and possibly causes stopping of feeding of a whole blast furnace winch. The main control module comprises a first wire inlet sub-module, a first commutator module and a first inversion sub-module which are electrically connected in sequence. The input end of the first change-over switch is electrically connected with the output end of the first fuse or the output end of the second fuse, and the output end of the first change-over switch is electrically connected with the input end of the first inlet wire reactor. The input end of the second change-over switch is electrically connected with the output end of the second fuse or the output end of the first fuse, and the output end of the second change-over switch is electrically connected with the input end of the second inlet wire reactor. The input end of the fifth change-over switch is electrically connected with the output end of the first inversion sub-module or the output end of the second inversion sub-module, and the output end of the fifth change-over switch is electrically connected with the input end of the wire outlet reactor. The method can meet the requirements of users, and ensures that the feeding of the blast furnace winch is always normally operated.

Description

Technical Field

[0001] The present application relates to the technical field of ironmaking furnace top equipment, and in particular to a control system for a blast furnace top hoisting motor. Background Art

[0002] The winch is a part of the blast furnace transmission equipment. In the blast furnace production process, the winch plays a vital role. It is responsible for conveying materials in the blast furnace. It is mainly used to lift and lower the material car, and deliver raw materials such as ore and coke into the blast furnace, or take molten iron out of the blast furnace. The stability of the winch system determines whether the blast furnace can be loaded normally.

[0003] At present, in order to ensure that the hoisting motor does not stop during operation, a backup circuit is set in the hoisting motor control system. If the components in the main control circuit are damaged, the backup circuit is switched to control the operation of the hoisting motor. However, the current control system cannot fully meet user needs. If the components in the backup circuit are also damaged, the blast furnace hoisting feeding will be forced to stop, affecting the entire blast furnace production. Summary of the invention

[0004] The embodiment of the present application provides a control system for a blast furnace top hoisting motor, thereby solving the problem that the existing control system cannot fully meet user needs and may cause the entire blast furnace hoisting feeding to stop.

[0005] The embodiment of the present invention provides a control system for a blast furnace top hoisting motor, the control system of the blast furnace top hoisting motor comprises a main control module, a standby module, an outlet module, a first switching switch and a second switching switch; the main control module comprises a first incoming line submodule, a first rectifier module and a first inverter submodule which are electrically connected in sequence; the first incoming line submodule comprises a first incoming line cabinet and a first circuit breaker, a first mutual inductor, a first fuse and a first incoming line reactor which are installed in its inner cavity and are electrically connected in sequence; the standby module comprises a second incoming line submodule, a second rectifier module and a second inverter submodule which are electrically connected in sequence; the second incoming line submodule comprises a second incoming line cabinet and a second circuit breaker, a second mutual inductor, a first fuse and a first incoming line reactor which are installed in its inner cavity and are electrically connected in sequence inductor, a second fuse and a second incoming line reactor; the input end of the first switching switch is electrically connected to the output end of the first fuse or the output end of the second fuse, and the output end is electrically connected to the input end of the first incoming line reactor; the input end of the second switching switch is electrically connected to the output end of the second fuse or the output end of the first fuse, and the output end is electrically connected to the input end of the second incoming line reactor; the outgoing line module includes a fifth switching switch and an outgoing line reactor; the input end of the fifth switching switch is electrically connected to the output end of the first inverter submodule or the output end of the second inverter submodule, and the output end is electrically connected to the input end of the outgoing line reactor; the output end of the outgoing line reactor is electrically connected to the hoisting motor.

[0006] In a possible implementation, the control system of the blast furnace top winch motor also includes a third switching switch; the input end of the third switching switch is electrically connected to the output end of the first switching switch or the output end of the second switching switch, and the output end is electrically connected to the input end of the first incoming line inductor or the input end of the second incoming line inductor.

[0007] In a possible implementation, the first inverter submodule includes a first inverter cabinet and a first inverter; the first inverter is arranged in the first inverter cabinet; the input end of the first inverter is electrically connected to the output end of the first rectifier module, and the output end is electrically connected to the input end of the fifth switching switch.

[0008] In a possible implementation, the second inverter submodule includes a second inverter cabinet and a second inverter; the second inverter is arranged in the second inverter cabinet; the input end of the second inverter is electrically connected to the output end of the second rectifier module, and the output end is electrically connected to the input end of the fifth switching switch.

[0009] In a possible implementation, the control system of the blast furnace top winch motor also includes a braking module; the braking module includes a resistor cabinet, a braking resistor, a first braking unit and a second braking unit; the first braking unit is arranged in the first inverter cabinet; the second braking unit is arranged in the second inverter cabinet; the braking resistor is arranged in the resistor cabinet; the input end of the first braking unit is connected between the first rectifier module and the first inverter, and the output end is electrically connected to the braking resistor; the input end of the second braking unit is connected between the second rectifier module and the second inverter, and the output end is electrically connected to the braking resistor.

[0010] In a possible implementation, the braking module further includes a fourth switching switch; an input end of the fourth switching switch is electrically connected to an output end of the first braking unit or an output end of the second braking unit, and an output end of the fourth switching switch is electrically connected to the braking resistor.

[0011] In a possible implementation, the control system of the blast furnace top hoisting motor also includes a first incoming line ammeter, a first incoming line voltmeter and a first voltage selection switch installed on the first incoming line cabinet door.

[0012] In a possible implementation, the control system of the blast furnace top hoisting motor further includes a second incoming line ammeter, a second incoming line voltmeter and a second voltage selection switch installed on the door of the second incoming line cabinet.

[0013] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

[0014] The embodiment of the present invention provides a control system for a blast furnace top hoisting motor, and the control system for the blast furnace top hoisting motor includes a main control module, a standby module, an outlet module, a first switching switch, and a second switching switch. The main control module includes a first incoming line submodule, a first rectifier module, and a first inverter submodule electrically connected in sequence. The first incoming line submodule includes a first incoming line cabinet and a first circuit breaker, a first mutual inductor, a first fuse, and a first incoming line reactor installed in its inner cavity and electrically connected in sequence. The standby module includes a second incoming line submodule, a second rectifier module, and a second inverter submodule electrically connected in sequence. The second incoming line submodule includes a second incoming line cabinet and a second circuit breaker, a second mutual inductor, a second fuse, and a second incoming line reactor installed in its inner cavity and electrically connected in sequence. The input end of the first switching switch is electrically connected to the output end of the first fuse or the output end of the second fuse, and the output end is electrically connected to the input end of the first incoming line reactor. The input end of the second switching switch is electrically connected to the output end of the second fuse or the output end of the first fuse, and the output end is electrically connected to the input end of the second incoming line reactor. The output module includes a fifth switching switch and an output reactor. The input end of the fifth switching switch is electrically connected to the output end of the first inverter module or the output end of the second inverter module, and the output end is electrically connected to the input end of the output reactor. The output end of the output reactor is electrically connected to the hoisting motor. The present application ensures that when any component in the main control module or the standby module is damaged, the equipment can be kept running, thereby meeting user needs and ensuring that the blast furnace hoisting and loading is always operating normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0016] Figure 1 A schematic diagram of a control system for a blast furnace top hoisting motor provided in an embodiment of the present application.

[0017] Icons: 1-main control module; 11-first incoming line module; 111-first incoming line cabinet; 112-first circuit breaker; 113-first mutual inductor; 114-first fuse; 115-first incoming line reactor; 12-first rectifier module; 13-first inverter module; 131-first inverter cabinet; 132-first inverter; 2-standby module; 21-second incoming line module; 211-second incoming line cabinet; 212-second circuit breaker; 213-second mutual inductor; 214-second fuse; 215-second incoming line reactor; 22-second rectifier module; 23-second inverter Module; 231-second inverter cabinet; 232-second inverter; 3-outgoing line module; 31-fifth switching switch; 32-outgoing line reactor; 4-first switching switch; 5-second switching switch; 6-third switching switch; 7-brake module; 71-resistance cabinet; 72-brake resistor; 73-first brake unit; 74-second brake unit; 75-fourth switching switch; 8-first incoming line ammeter; 9-first incoming line voltmeter; 10-first voltage selection switch; 101-second incoming line ammeter; 102-second incoming line voltmeter; 103-second voltage selection switch; 104-winch motor. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] In the description of the embodiments of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limitations on the present invention. The terms "first", "second", "third", "fourth", and "fifth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to the specific circumstances.

[0020] like Figure 1 As shown, an embodiment of the present invention provides a control system for a blast furnace top hoisting motor, and the control system for the blast furnace top hoisting motor includes a main control module 1, a standby module 2, an outlet module 3, a first switching switch 4 and a second switching switch 5. When the equipment is working normally, the main control module 1 is put into operation, and the standby module 2 is standby.

[0021] In the embodiment of the present application, the main control module 1 includes a first incoming line submodule 11, a first rectifier module 12 and a first inverter module 13 which are electrically connected in sequence. The first incoming line submodule 11 includes a first incoming line cabinet 111 and a first circuit breaker 112, a first mutual inductor 113, a first fuse 114 and a first incoming line reactor 115 which are installed in its inner cavity and electrically connected in sequence. When the main control module 1 operates normally, the first incoming line submodule 11 transmits three-phase alternating current to the first rectifier module 12, the first rectifier module 12 rectifies the three-phase alternating current into direct current and outputs it to the first inverter module 13, and the first inverter module 13 inverts the direct current into three-phase variable alternating current and outputs it to the outgoing line module 3 to control the operation and speed regulation of the hoisting motor 104.

[0022] In the embodiment of the present application, the standby module 2 includes a second incoming line submodule 21, a second rectifier module 22, and a second inverter module 23 which are electrically connected in sequence. The second incoming line submodule 21 includes a second incoming line cabinet 211 and a second circuit breaker 212, a second mutual inductor 213, a second fuse 214, and a second incoming line reactor 215 which are installed in its inner cavity and electrically connected in sequence. When the standby module 2 is operating normally, the second incoming line submodule 21 transmits three-phase AC power to the second rectifier module 22, the second rectifier module 22 rectifies the three-phase AC power into DC power and outputs it to the second inverter module 23, and the second inverter module 23 inverts the DC power into three-phase variable AC power and outputs it to the outgoing line module 3 to control the operation and speed regulation of the hoisting motor 104.

[0023] like Figure 1 As shown, the input end of the first switching switch 4 is electrically connected to the output end of the first fuse 114 or the output end of the second fuse 214, and the output end is electrically connected to the input end of the first incoming line reactor 115. The input end of the second switching switch 5 is electrically connected to the output end of the second fuse 214 or the output end of the first fuse 114, and the output end is electrically connected to the input end of the second incoming line reactor 215. The outgoing line module 3 includes a fifth switching switch 31 and an outgoing line reactor 32. The input end of the fifth switching switch 31 is electrically connected to the output end of the first inverter module 13 or the output end of the second inverter module 23, and the output end is electrically connected to the input end of the outgoing line reactor 32. The output end of the outgoing line reactor 32 is electrically connected to the hoisting motor 104.

[0024] When the main control module 1 operates normally, the standby module 2 is in standby mode (the second circuit breaker 212 is disconnected and does not supply power), the input end of the first switching switch 4 is electrically connected to the output end of the first fuse 114, the input end of the second switching switch 5 is electrically connected to the output end of the second fuse 214, and the input end of the fifth switching switch 31 is electrically connected to the output end of the first inverter submodule 13. During the operation of the device, the components in the main control module 1 and the standby module 2 may fail, so in actual use, the contact positions of the input end of the first switching switch 4, the input end of the second switching switch 5, and the input end of the fifth switching switch 31 are converted according to the failure of the components, as shown below:

[0025] (1) When a component in the first incoming line submodule 11 of the main control module 1 fails, the input end of the first switching switch 4 is switched to be electrically connected to the output end of the second fuse 214, and the input end of the second switching switch 5 is switched to be electrically connected to the output end of the first fuse 114, that is, power is supplied through the second incoming line submodule 21 of the standby module 2, and rectification and inversion are performed through the first rectifier submodule 12 and the first inverter submodule 13 of the main control module 1, so as to ensure the normal operation of the hoisting motor 104;

[0026] (2) When the first rectifier module 12 or the first inverter module 13 of the main control module 1 fails, the input end of the second switch 5 is switched to be electrically connected to the output end of the second fuse 214, and the input end of the fifth switch 31 is switched to be electrically connected to the output end of the second inverter module 23, that is, the second incoming line module 21, the second rectifier module 22 and the second inverter module 23 of the standby module 2 are used for power supply, rectification and inversion to ensure the normal operation of the hoisting motor 104;

[0027] (3) When a component in the second incoming line submodule 21 of the standby module 2 fails, the input end of the second switching switch 5 is switched to be electrically connected to the output end of the first fuse 114, and the input end of the first switching switch 4 is switched to be electrically connected to the output end of the second fuse 214, and at the same time, the input end of the fifth switching switch 31 is switched to be electrically connected to the output end of the second inverter submodule 23, that is, power is supplied through the second incoming line submodule 21 of the standby module 2, and rectification and inversion are performed through the second rectifier submodule 22 and the second inverter submodule 23, so as to ensure the normal operation of the hoisting motor 104;

[0028] (4) When the second rectifier module 22 or the second inverter module 23 of the standby module 2 fails, the input end of the first switching switch 4 is converted to be electrically connected to the output end of the first fuse 114, and the input end of the second switching switch 5 is converted to be electrically connected to the output end of the second fuse 214, and at the same time, the input end of the fifth switching switch 31 is converted to be electrically connected to the output end of the first inverter module 13, that is, power supply, rectification and inversion are performed through the first incoming line module 11, the first rectifier module 12 and the first inverter module 13 of the main control module 1 to ensure the normal operation of the hoisting motor 104.

[0029] The embodiment of the present invention provides a control system for a blast furnace top hoisting motor, and the control system for the blast furnace top hoisting motor includes a main control module 1, a standby module 2, an outlet module 3, a first switch 4, and a second switch 5. The main control module 1 includes a first incoming line submodule 11, a first rectifier module 12, and a first inverter submodule 13 that are electrically connected in sequence. The first incoming line submodule 11 includes a first incoming line cabinet 111 and a first circuit breaker 112, a first mutual inductor 113, a first fuse 114, and a first incoming line reactor 115 that are installed in its inner cavity and are electrically connected in sequence. The standby module 2 includes a second incoming line submodule 21, a second rectifier module 22, and a second inverter submodule 23 that are electrically connected in sequence. The second incoming line submodule 21 includes a second incoming line cabinet 211 and a second circuit breaker 212, a second mutual inductor 213, a second fuse 214, and a second incoming line reactor 215 that are installed in its inner cavity and are electrically connected in sequence. The input end of the first switching switch 4 is electrically connected to the output end of the first fuse 114 or the output end of the second fuse 214, and the output end is electrically connected to the input end of the first incoming line reactor 115. The input end of the second switching switch 5 is electrically connected to the output end of the second fuse 214 or the output end of the first fuse 114, and the output end is electrically connected to the input end of the second incoming line reactor 215. The outgoing line module 3 includes a fifth switching switch 31 and an outgoing line reactor 32. The input end of the fifth switching switch 31 is electrically connected to the output end of the first inverter module 13 or the output end of the second inverter module 23, and the output end is electrically connected to the input end of the outgoing line reactor 32. The output end of the outgoing line reactor 32 is electrically connected to the hoisting motor 104. The present application ensures that when any component in the main control module 1 or the standby module 2 is damaged, the equipment can be kept running, thereby meeting user needs and ensuring that the blast furnace hoisting and loading is always operating normally.

[0030] like Figure 1As shown, the control system of the blast furnace top hoisting motor also includes a third switch 6. The input end of the third switch 6 is electrically connected to the output end of the first switch 4 or the output end of the second switch 5, and the output end is electrically connected to the input end of the first incoming line reactor 115 or the input end of the second incoming line reactor 215. The third switch 6 can avoid the problem of the first switch 4 or the second switch 5 contact being unable to switch due to adhesion. For example: if the contacts of the first switching switch 4 are stuck and cannot be switched, and a component in the first incoming line submodule 11 of the main control module 1 fails and cannot supply power to the main control module 1, and at the same time the second rectifier module 22 in the backup module 2 also fails, in this case, only the backup module 2 can be used to supply power, and the first rectifier module 12 of the main control module 1 is used for rectification. At this time, the third switching switch 6 is needed to convert the input end of the second switching switch 5 to be electrically connected to the output end of the second fuse 214, and convert the input end of the third switching switch 6 to be electrically connected to the output end of the second switching switch 5, and at the same time convert the output end of the third switching switch 6 to be connected to the input end of the first incoming line reactor 115 to ensure the normal operation of the hoisting motor 104.

[0031] In the embodiment of the present application, the first inverter module 13 includes a first inverter cabinet 131 and a first inverter 132. The first inverter 132 is disposed in the first inverter cabinet 131. The input end of the first inverter 132 is electrically connected to the output end of the first rectifier module 12, and the output end is electrically connected to the input end of the fifth switch 31.

[0032] In the embodiment of the present application, the second inverter module 23 includes a second inverter cabinet 231 and a second inverter 232. The second inverter 232 is disposed in the second inverter cabinet 231. The input end of the second inverter 232 is electrically connected to the output end of the second rectifier module 22, and the output end is electrically connected to the input end of the fifth switch 31.

[0033] like Figure 1As shown, the control system of the blast furnace top hoisting motor also includes a brake module 7. The brake module 7 includes a resistor cabinet 71, a brake resistor 72, a first brake unit 73 and a second brake unit 74. The first brake unit 73 is arranged in the first inverter cabinet 131. The second brake unit 74 is arranged in the second inverter cabinet 231. The brake resistor 72 is arranged in the resistor cabinet 71. The input end of the first brake unit 73 is connected between the first rectifier module 12 and the first inverter 132, and the output end is electrically connected to the brake resistor 72. The input end of the second brake unit 74 is connected between the second rectifier module 22 and the second inverter 232, and the output end is electrically connected to the brake resistor 72. In practical applications, the first brake unit 73 and the second brake unit 74 are used for equipment parking. During the braking process, the brake resistor 72 converts excess electrical energy into heat for consumption, thereby reducing inertia for rapid parking.

[0034] Continue to refer to Figure 1 As shown, the brake module 7 also includes a fourth switch 75. The input end of the fourth switch 75 is electrically connected to the output end of the first brake unit 73 or the output end of the second brake unit 74, and the output end is electrically connected to the brake resistor 72. In practical applications, when the main control module 1 is used to control the hoisting motor 104, the input end of the fourth switch 75 is converted to be electrically connected to the output end of the first brake unit 73, so that the excess electric energy of the main control module 1 is converted into heat energy for consumption through the brake resistor 72 during braking; when the standby module 2 is used to control the hoisting motor 104, the input end of the fourth switch 75 is converted to be electrically connected to the output end of the second brake unit 74, so that the excess electric energy of the standby module 2 is converted into heat energy for consumption during braking, so that setting a resistor cabinet 71 and a brake resistor 72 can meet the use requirements of the main control module 1 and the standby module 2, thereby reducing costs.

[0035] In the embodiment of the present application, the control system of the blast furnace top hoisting motor also includes a first incoming line ammeter 8, a first incoming line voltmeter 9 and a first voltage selection switch 10 installed on the door of the first incoming line cabinet 111. Specifically, the first incoming line ammeter 8, the first incoming line voltmeter 9 and the first voltage selection switch 10 are provided to facilitate the later maintenance of the equipment, so that the staff can find problems more simply and quickly during the maintenance process.

[0036] In the embodiment of the present application, the control system of the blast furnace top hoisting motor also includes a second incoming line ammeter 101, a second incoming line voltmeter 102, and a second voltage selection switch 103 installed on the door of the second incoming line cabinet 211. Specifically, the second incoming line ammeter 101, the second incoming line voltmeter 102, and the second voltage selection switch 103 are provided to facilitate the later maintenance of the equipment, so that the staff can find problems more simply and quickly during the maintenance process.

[0037] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other. Each embodiment focuses on the differences from other embodiments.

[0038] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the present application.

Claims

1. A control system for a blast furnace top hoisting motor, characterized in that: It comprises a main control module (1), a standby module (2), an outlet module (3), a first switching switch (4) and a second switching switch (5); The main control module (1) comprises a first incoming line submodule (11), a first rectifier submodule (12) and a first inverter submodule (13) which are electrically connected in sequence; The first incoming line submodule (11) comprises a first incoming line cabinet (111) and a first circuit breaker (112), a first mutual inductor (113), a first fuse (114) and a first incoming line reactor (115) which are installed in the inner cavity thereof and are electrically connected in sequence; The standby module (2) comprises a second incoming line submodule (21), a second rectifier submodule (22) and a second inverter submodule (23) which are electrically connected in sequence; The second incoming line submodule (21) comprises a second incoming line cabinet (211) and a second circuit breaker (212), a second mutual inductor (213), a second fuse (214) and a second incoming line reactor (215) which are installed in the inner cavity thereof and are electrically connected in sequence; The input end of the first switching switch (4) is electrically connected to the output end of the first fuse (114) or the output end of the second fuse (214), and the output end is electrically connected to the input end of the first incoming line reactor (115); The input end of the second switching switch (5) is electrically connected to the output end of the second fuse (214) or the output end of the first fuse (114), and the output end is electrically connected to the input end of the second incoming line reactor (215); The outgoing line module (3) comprises a fifth switching switch (31) and an outgoing line reactor (32); The input end of the fifth switching switch (31) is electrically connected to the output end of the first inverter module (13) or the output end of the second inverter module (23), and the output end is electrically connected to the input end of the output line reactor (32); The output end of the outgoing line reactor (32) is electrically connected to the hoisting motor (104).

2. The control system of the blast furnace top hoisting motor according to claim 1, characterized in that: Also includes a third switch (6); The input end of the third switching switch (6) is electrically connected to the output end of the first switching switch (4) or the output end of the second switching switch (5), and the output end is electrically connected to the input end of the first incoming line reactor (115) or the input end of the second incoming line reactor (215).

3. The control system of the blast furnace top hoisting motor according to claim 1, characterized in that: The first inverter submodule (13) comprises a first inverter cabinet (131) and a first inverter (132); The first inverter (132) is arranged in the first inverter cabinet (131); The input end of the first inverter (132) is electrically connected to the output end of the first rectifier module (12), and the output end is electrically connected to the input end of the fifth switch (31).

4. The control system of the blast furnace top hoisting motor according to claim 3, characterized in that: The second inverter submodule (23) comprises a second inverter cabinet (231) and a second inverter (232); The second inverter (232) is arranged in the second inverter cabinet (231); The input end of the second inverter (232) is electrically connected to the output end of the second rectifier module (22), and the output end is electrically connected to the input end of the fifth switch (31).

5. The control system of the blast furnace top hoisting motor according to claim 4, characterized in that: Also includes a brake module (7); The braking module (7) comprises a resistor cabinet (71), a braking resistor (72), a first braking unit (73) and a second braking unit (74); The first braking unit (73) is arranged in the first inverter cabinet (131); The second braking unit (74) is arranged in the second inverter cabinet (231); The braking resistor (72) is arranged in the resistor cabinet (71); The input end of the first braking unit (73) is connected between the first rectifier module (12) and the first inverter (132), and the output end is electrically connected to the braking resistor (72); The input end of the second braking unit (74) is connected between the second rectifier module (22) and the second inverter (232), and the output end is electrically connected to the braking resistor (72).

6. The control system of the blast furnace top hoisting motor according to claim 5, characterized in that: The braking module (7) further comprises a fourth switching switch (75); The input end of the fourth switch (75) is electrically connected to the output end of the first brake unit (73) or the output end of the second brake unit (74), and the output end is electrically connected to the brake resistor (72).

7. The control system of the blast furnace top hoisting motor according to claim 1, characterized in that: It also includes a first incoming line ammeter (8), a first incoming line voltmeter (9) and a first voltage selection switch (10) installed on the cabinet door of the first incoming line cabinet (111).

8. The control system of the blast furnace top hoisting motor according to claim 1, characterized in that: It also includes a second incoming line ammeter (101), a second incoming line voltmeter (102) and a second voltage selection switch (103) installed on the cabinet door of the second incoming line cabinet (211).

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