A device for preventing the falling of the adjusting cylinder support sliding pin of BPRT turbine

Abstract

The utility model provides a device that prevents the adjusting cylinder support sliding pin of BPRT turbine from falling off in operation, belongs to the technical field of blast furnace gas pressure recovery, the utility model discloses a support sliding pin, both ends of support sliding pin are fixedly installed with adjusting cylinder support arm, and the top of support sliding pin is welded with the outer thread short circuit, the top of outer thread short circuit is provided with the inner boss cover cap nut with thread, the bottom of support sliding pin is provided with the slot nut and lock piece combination, the outer surface of slot nut and lock piece combination is sleeved with adjusting washer, the utility model installs a set of cover cap nut that prevents the support sliding pin from running out on the top of existing support sliding pin, the fastening bolt and lock piece combination that prevent the breakage of original slot nut and lock piece from failing are installed on the hole threading of the fastening end of support sliding pin. Thus can effectively prevent the support sliding pin from often appearing lock piece breakage, locking nut falling off, sliding pin falling off and causing the production accident of trouble shutdown in the high -speed frequent adjustment work.

Description

Technical Field

[0001] This utility model relates to a device for preventing the sliding pin of the regulating cylinder of a BPRT turbine from falling off during operation, belonging to the field of blast furnace gas residual pressure recovery technology. Background Technology

[0002] The turbine regulating cylinder consists of four sliding pins supported by four support seats inside the turbine body. A servo cylinder is connected to the regulating cylinder via a pistol plate. During operation, the servo system controls the servo cylinder to drive the regulating cylinder axially, adjusting the turbine's stationary vane opening and closing to maintain a constant blast furnace top pressure. Due to fluctuations in blast furnace top pressure caused by process adjustments such as iron tapping and blast furnace blast, the servo system rapidly adjusts the stationary vane opening to maintain stable top pressure. The frequent operation of the regulating cylinder and its exposure to impact loads frequently lead to the detachment of the support sliding pins, damaging the turbine regulating cylinder support system and causing production accidents such as downtime, severely impacting the safe operation of the turbine. Utility Model Content

[0003] The purpose of this invention is to solve the problems existing in the prior art and to provide a device to prevent the sliding pin of the regulating cylinder of a BPRT turbine from falling off during operation.

[0004] The objective of this utility model is achieved through the following technical solution: A device for preventing the support pin of the regulating cylinder of a BPRT turbine from falling off during operation includes a support pin, with regulating cylinder support arms fixedly installed at both ends of the support pin. An external threaded short connector is welded to the top of the support pin, and an internal boss cap nut is threadedly connected to the top of the external threaded short connector. A slotted nut and locking plate assembly is provided at the bottom of the support pin. An adjusting shim is fitted onto the outer surface of the slotted nut and locking plate assembly. A locking bolt and locking plate assembly are threadedly connected to the inner thread surface of the slotted nut and locking plate assembly, and a locking plate is fitted onto the thread surface of the locking bolt and locking plate assembly. The end of the regulating cylinder support arm away from the support pin is connected to the regulating cylinder.

[0005] The top of the locking plate contacts the bottom of the adjusting shim.

[0006] A cylinder bearing crank slider is slidably connected to one side of the regulating cylinder, and a cylinder bearing is fixedly connected to the side of the cylinder bearing crank slider away from the regulating cylinder.

[0007] The wall thickness of the external threaded short connector is 15mm, and the inner diameter of the external threaded short connector is larger than that of the support pin.

[0008] An adjusting cylinder support seat is provided on the lower side of the supporting sliding pin.

[0009] This utility model has the following beneficial effects: A cap nut was added to the top of the existing support pin to prevent it from slipping out. A threaded hole was drilled at the fastening end of the support pin, and a fastening bolt and locking plate assembly were installed to prevent the original slotted nut and locking plate from breaking and failing. This effectively prevents production accidents caused by locking plate breakage, locking nut detachment, and pin detachment during high-speed and frequent adjustments, which could lead to machine downtime. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall equipment structure of a device for preventing the sliding pin of the regulating cylinder of a BPRT turbine from falling off during operation.

[0011] Figure 2 This is a schematic diagram of the locking bolt and locking plate assembly and the slotted nut and locking plate assembly of the device for preventing the sliding pin of the regulating cylinder of a BPRT turbine from falling off during operation.

[0012] Figure 3 This utility model Figure 2 Exploded view.

[0013] The reference numerals in the figure are as follows: 1 is the support pin; 2 is the adjusting cylinder support arm; 3 is the adjusting cylinder support seat; 4 is the slotted nut and locking plate combination; 5 is the adjusting shim; 6 is the locking bolt and locking plate combination; 7 is the external thread short connector; 8 is the inner boss cap nut; 9 is the locking plate; 10 is the adjusting cylinder; 11 is the cylinder bearing crank slider; 12 is the cylinder bearing. Detailed Implementation

[0014] The present invention will be further described in detail below with reference to the accompanying drawings: This embodiment is implemented based on the technical solution of the present invention and provides detailed implementation methods, but the protection scope of the present invention is not limited to the following embodiments.

[0015] like Figures 1-3 As shown, the device for preventing the support pin of the regulating cylinder of a BPRT turbine from falling off during operation, as described in this embodiment, includes a support pin 1. Regulating cylinder arms 2 are fixedly installed at both ends of the support pin 1. An external threaded short connector 7 is welded to the top of the support pin 1. An internal boss cap nut 8 is threadedly connected to the top of the external threaded short connector 7. A slotted nut and locking plate assembly 4 is provided at the bottom of the support pin 1. An adjusting shim 5 is sleeved on the outer surface of the slotted nut and locking plate assembly 4. A locking bolt and locking plate assembly 6 is threadedly connected to the inner thread of the slotted nut and locking plate assembly 4. A locking plate 9 is sleeved on the threaded surface of the locking bolt and locking plate assembly 6. The end of the regulating cylinder arm 2 away from the support pin 1 is connected to the regulating cylinder 10.

[0016] The top of the locking plate 9 contacts the bottom of the adjusting shim 5.

[0017] A cylinder bearing crank slider 11 is slidably connected to one side of the regulating cylinder 10, and a cylinder bearing 12 is fixedly connected to the side of the cylinder bearing crank slider 11 away from the regulating cylinder 10.

[0018] The wall thickness of the external thread short connector 7 is 15mm, and the inner diameter of the external thread short connector 7 is greater than that of the support pin 1.

[0019] An adjusting cylinder support seat 3 is provided on the lower side of the supporting sliding pin 1.

[0020] Working principle: An additional fastening device and a locking device have been added to the original single fastening mechanism. Specifically: A short-circuit joint 7 with a 15mm wall thickness and an inner diameter larger than the top of the existing support pin 1 is welded to the top. An inner boss cap nut 8 is fastened to the outside of the sleeve. Finally, the inner boss cap nut 8 is tack-welded in place. A slotted nut and locking plate assembly 4 is installed by drilling and threading a hole at the tail end of the support pin 1. The locking bolt and locking plate assembly 6 are then tightened to the slotted nut and locking plate assembly 4. The compressive force of the locking bolt and locking plate assembly 6 and the slotted nut and locking plate assembly 4 compresses the slotted nut, adjusting shim 5, locking bolt, and locking plate 9. This effectively prevents production accidents such as locking plate breakage, locking nut detachment, and pin detachment that frequently occur during high-speed and frequent adjustments of the support pin 1, leading to machine downtime.

[0021] The above description is merely a preferred embodiment of this utility model. These specific embodiments are different implementations based on the overall concept of this utility model, and the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A device for preventing the sliding pin of the regulating cylinder of a BPRT turbine from falling off during operation, characterized in that, The system includes a support pin (1), both ends of which are fixedly mounted with adjustment cylinder arms (2), and the top of the support pin (1) is welded with an external threaded short connector (7). The top of the external threaded short connector (7) is threadedly connected with an inner boss cap nut (8). The bottom of the support pin (1) is provided with a slotted nut and locking plate assembly (4). An adjustment shim (5) is sleeved on the outer surface of the slotted nut and locking plate assembly (4). The inner threaded surface of the slotted nut and locking plate assembly (4) is threadedly connected with a locking bolt and locking plate assembly (6). The threaded surface of the locking bolt and locking plate assembly (6) is sleeved with a locking plate (9). The end of the adjustment cylinder arm (2) away from the support pin (1) is connected to the adjustment cylinder (10).

2. The device for preventing the sliding pin of the regulating cylinder of a BPRT turbine from falling off during operation, as described in claim 1, is characterized in that... The top of the locking plate (9) contacts the bottom of the adjusting shim (5).

3. The device for preventing the sliding pin of the regulating cylinder of a BPRT turbine from falling off during operation, as described in claim 1, is characterized in that... The regulating cylinder (10) is slidably connected to a cylinder bearing crank slider (11) on one side, and a cylinder bearing (12) is fixedly connected to the side of the cylinder bearing crank slider (11) away from the regulating cylinder (10).

4. The device for preventing the sliding pin of the regulating cylinder of a BPRT turbine from falling off during operation, as described in claim 1, is characterized in that... The wall thickness of the external threaded short connector (7) is 15mm, and the inner diameter of the external threaded short connector (7) is greater than that of the support pin (1).

5. The device for preventing the sliding pin of the regulating cylinder of a BPRT turbine from falling off during operation, as described in claim 1, is characterized in that... An adjusting cylinder support seat (3) is provided on the lower side of the supporting sliding pin (1).

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