System for preventing faults of hydraulic station of intermediate frequency furnace

Abstract

The utility model discloses a system for preventing faults of a hydraulic station of an intermediate frequency furnace, which belongs to the technical field of intermediate frequency furnaces, solves the problem that follow-up operation is affected due to the fact that the hydraulic station of the traditional intermediate frequency furnace needs to stop working for maintenance when faults occur, and comprises a hydraulic station, a first intermediate frequency furnace, a standby hydraulic station and a second intermediate frequency furnace, an oil return communicating pipe and an oil conveying communicating pipe are connected between the first intermediate frequency furnace and the second intermediate frequency furnace, an oil conveying pipe is connected between the hydraulic station and the oil conveying communicating pipe, a standby oil conveying pipe is connected between the standby hydraulic station and the oil conveying communicating pipe, and a first valve is arranged between the oil conveying pipe and the oil conveying communicating pipe. A second valve is arranged between the standby oil conveying pipe and the oil conveying communicating pipe; a shared oil return pipe is arranged on the oil return communicating pipe and connected with an oil return pipe and a standby oil return pipe through a central valve, the oil return pipe is connected with the hydraulic station, and the standby oil return pipe is connected with the standby hydraulic station. The safety performance of the working system of the intermediate frequency furnace is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medium frequency furnaces, and in particular relates to a system for preventing failures of a hydraulic station of a medium frequency furnace. Background Art

[0002] The medium frequency furnace is an induction heating device used to heat metals. It is widely used in the pre-forging industry, the foundry industry, and the tempering heat treatment industry. It plays the role of the main heating equipment in the mechanical hot processing industry. In the medium frequency furnace system, the hydraulic station is mainly used on the medium frequency furnace. Generally, one hydraulic station is configured for each furnace body. It is an indispensable component of the entire medium frequency furnace system. However, when a traditional medium frequency furnace has a malfunction in its corresponding hydraulic station, it can only stop working for maintenance. If it cannot be repaired within the specified time, the molten steel cannot be discharged normally, resulting in a serious "frozen furnace" phenomenon. It is extremely dangerous to re-melt the "frozen furnace". If the furnace is planed and rebuilt, it will cause furnace materials and unnecessary economic waste, and the labor cost will be greatly increased. Utility Model Content

[0003] The purpose of the utility model is to provide a system for preventing faults in a hydraulic station of a medium frequency furnace, so as to solve the problem that a traditional hydraulic station of a medium frequency furnace needs to stop working for maintenance when a fault occurs, which affects subsequent operations.

[0004] The technical solution of the utility model is: a system for preventing faults in a hydraulic station of a medium frequency furnace, comprising a hydraulic station and a first medium frequency furnace, and also comprising a spare hydraulic station and a second medium frequency furnace, wherein a return oil connecting pipe and an oil delivery connecting pipe are respectively connected between the first medium frequency furnace and the second medium frequency furnace, an oil delivery pipe is connected between the hydraulic station and the oil delivery connecting pipe, a spare oil delivery pipe is connected between the spare hydraulic station and the oil delivery connecting pipe, a first valve is provided between the oil delivery pipe and the oil delivery connecting pipe, and a second valve is provided between the spare oil delivery pipe and the oil delivery connecting pipe; a shared return oil pipe is provided on the return oil connecting pipe, and the shared return oil pipe is connected to the return oil pipe and the spare return oil pipe through a central valve, the return oil pipe is connected to the hydraulic station, and the spare oil return pipe is connected to the spare hydraulic station.

[0005] Furthermore, a hydraulic lock is provided on the shared oil return pipe.

[0006] The beneficial effects of the present invention are as follows: the present invention facilitates the maintenance of a hydraulic station without affecting the normal operation of the entire operation. By setting up a spare hydraulic station, which is connected in parallel with the intermediate frequency furnace in use through an oil supply pipeline, the hydraulic station can continue to operate normally without affecting the maintenance. At the same time, an oil return pipe is set in parallel between the hydraulic station and the intermediate frequency furnace. The oil return pipe is controlled by a central valve. With the cooperation of the hydraulic lock, the intermediate frequency furnace that needs to be operated forms a closed-loop oil circuit, thereby ensuring its normal operation.

[0007] The utility model can realize that any hydraulic station can control the furnace-out operation of any medium frequency furnace, thereby avoiding the occurrence of furnace freezing to the greatest extent, saving costs, and greatly improving the safety performance of the medium frequency furnace working system. At the same time, the utility model has the advantages of simple principle, convenient implementation, low transformation cost, high safety performance, small investment and quick effect, strong operability, and strong replicability in the application of the same industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0009] In the figure: 1- hydraulic station; 2- spare hydraulic station; 3- first intermediate frequency furnace; 4- second intermediate frequency furnace; 5- oil pipeline; 6- spare oil pipeline; 7- oil return pipe; 8- spare oil return pipe; 9- shared oil return pipe; 10- oil return connecting pipe; 11- first valve; 12- second valve; 13- central valve; 14- oil pipeline connecting pipe; 15- hydraulic lock. DETAILED DESCRIPTION

[0010] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0011] like Figure 1 As shown, a system for preventing faults in a hydraulic station of an intermediate frequency furnace includes a hydraulic station 1 and a first intermediate frequency furnace 3, and also includes a standby hydraulic station 2 and a second intermediate frequency furnace 4. A return oil connecting pipe 10 and an oil delivery connecting pipe 14 are respectively connected between the first intermediate frequency furnace 3 and the second intermediate frequency furnace 4. An oil delivery pipe 5 is connected between the hydraulic station 1 and the oil delivery connecting pipe 14, and a standby oil delivery pipe 6 is connected between the standby hydraulic station 2 and the oil delivery connecting pipe 14. A first valve 11 is provided between the oil delivery pipe 5 and the oil delivery connecting pipe 14, and a second valve 12 is provided between the standby oil delivery pipe 6 and the oil delivery connecting pipe 14; a shared return oil pipe 9 is provided on the return oil connecting pipe 10, and the shared return oil pipe 9 is connected to the return oil pipe 7 and the standby return oil pipe 8 through a central valve 13, the return oil pipe 7 is connected to the hydraulic station 1, and the standby oil return pipe 8 is connected to the standby hydraulic station 2.

[0012] A hydraulic lock 15 is provided on the shared oil return pipe 9 .

[0013] When in use, start the hydraulic station 1, and the hydraulic oil can be selectively supplied to the first intermediate frequency furnace 3 or the second intermediate frequency furnace 4 through the oil pipe 5. If you choose to supply the first intermediate frequency furnace 3, open the first valve 11 and close the second valve 12 at the same time. At this time, the hydraulic oil is supplied to the first intermediate frequency furnace 3. When the oil supply is completed and the oil is returned, open the central valve 13, and the hydraulic oil enters the shared return oil pipe 9 from the return oil connecting pipe 10 on the side of the first intermediate frequency furnace 3, and then enters the hydraulic station 1 from the return oil pipe 7. With the cooperation of the hydraulic lock 15, the oil circuit is in a closed-loop state at this time, and the first intermediate frequency furnace 3 can operate normally; if you choose to supply the second intermediate frequency furnace 4, close the first valve 11 and open the second valve 12 at the same time. At this time, the hydraulic oil is supplied to the second intermediate frequency furnace 4, and the hydraulic oil enters the shared return oil pipe 9 from the return oil connecting pipe 10 on the side of the second intermediate frequency furnace 4, and then enters the hydraulic station 1 from the return oil pipe 7. With the cooperation of the hydraulic lock 15, the oil circuit is in a closed-loop state at this time, and the second intermediate frequency furnace 4 can operate normally.

[0014] When the hydraulic station 1 fails to start, the backup hydraulic station 2 is started to supply hydraulic oil to the first intermediate frequency furnace 3 or the second intermediate frequency furnace 4 through the backup oil pipe 6. Similarly, if the hydraulic oil is supplied to the first intermediate frequency furnace 3, the first valve 11 is opened and the second valve 12 is closed at the same time. At this time, the hydraulic oil is supplied to the first intermediate frequency furnace 3. When the oil supply is completed and the oil is returned, the central valve 13 is opened, and the hydraulic oil enters the shared return oil pipe 9 from the return oil connecting pipe 10 on the side of the first intermediate frequency furnace 3, and then enters the backup hydraulic station 2 from the backup return oil pipe 8. , with the cooperation of the hydraulic lock 15, the oil circuit is in a closed-loop state at this time, and the first intermediate frequency furnace 3 can operate normally; if you choose to supply the second intermediate frequency furnace 4, close the first valve 11 and open the second valve 12 at the same time. At this time, the hydraulic oil is supplied to the second intermediate frequency furnace 4, and the hydraulic oil enters the shared return oil pipe 9 from the return oil connecting pipe 10 on one side of the second intermediate frequency furnace 4, and then enters the standby hydraulic station 2 from the standby return oil pipe 8. With the cooperation of the hydraulic lock 15, the oil circuit is in a closed-loop state at this time, and the second intermediate frequency furnace 4 can operate normally.

Claims

1. A system for preventing failure of a hydraulic station of an intermediate frequency furnace, comprising a hydraulic station and a first intermediate frequency furnace, characterized in that: It also comprises a standby hydraulic station (2) and a second intermediate frequency furnace (4); an oil return connecting pipe (10) and an oil delivery connecting pipe (14) are respectively connected between the first intermediate frequency furnace (3) and the second intermediate frequency furnace (4); an oil delivery pipe (5) is connected between the hydraulic station (1) and the oil delivery connecting pipe (14); a standby oil delivery pipe (6) is connected between the standby hydraulic station (2) and the oil delivery connecting pipe (14); a first valve (11) is provided between the oil delivery pipe (5) and the oil delivery connecting pipe (14); a second valve (12) is provided between the standby oil delivery pipe (6) and the oil delivery connecting pipe (14); a shared oil return pipe (9) is provided on the oil return connecting pipe (10); the shared oil return pipe (9) is connected to an oil return pipe (7) and a standby oil return pipe (8) via a central valve (13); the oil return pipe (7) is connected to the hydraulic station (1), and the standby oil return pipe (8) is connected to the standby hydraulic station (2).

2. A system for preventing failure of a hydraulic station of a medium frequency furnace according to claim 1, characterized in that: The shared oil return pipe (9) is provided with a hydraulic lock (15).

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