Large hydro-generator brake lever positioning and pitch adjustment module

Abstract

The invention discloses a large-scale hydro-turbine generator brake action rod positioning distance adjustment module, comprising a positioning distance adjustment part and a clamping part arranged in sequence from top to bottom; the positioning distance adjustment part comprises a first horizontal plate and a first vertical plate, the right end of the first horizontal plate is vertically connected to the middle of the first vertical plate; the clamping part is a U-shape with an opening facing left, comprising a second horizontal plate, a second vertical plate and a third horizontal plate connected in sequence; the lower end of the first vertical plate is vertically connected to the second horizontal plate. The invention is used to adjust the distance between the action rod and the travel switch of the generator brake, and can improve the installation quality and work efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of hydroelectric automatic devices of a hydroelectric generator set, and in particular relates to a positioning and pitch-adjusting module for a brake action rod of a large hydroelectric generator set. Background Art

[0002] The generator brake of the #1F-#6F unit of Tianer Power Plant is an important auxiliary equipment of the generator. Each unit is equipped with 12 generator brakes, which are responsible for accelerating the unit shutdown during the shutdown process and shortening the shutdown time. The generator brake has two states: lifting and falling. The monitoring system determines the working state of the generator brake by collecting the position of the travel switch of the generator brake, which serves as an important criterion for the unit state conversion.

[0003] The action rod of the generator brake moves with the upper chamber of the generator brake, and sends a position signal to the unit monitoring system by touching the contact of the travel switch. If there is any abnormality in the 12 generator brake action signals of each unit, the automatic start and stop process of the unit will fail, which will directly affect the total load of the power plant.

[0004] During the annual maintenance of the unit, the inspection and debugging of the operating rod and travel switch of the generator brake are completed. The generator brake is installed under the induced draft plate of the lower wind tunnel of the unit. The space is small, and the staff need to bring their own lighting devices and lie on their side. Two people work together, and the human-machine efficiency is very poor.

[0005] Therefore, it is necessary to develop a large-scale hydro-generator brake action rod positioning pitch adjustment module. Summary of the invention

[0006] The purpose of the present invention is to provide a large-scale hydro-generator set brake action rod positioning distance adjustment module, which is used to adjust the distance between the generator brake action rod and the travel switch, and can improve the installation quality and work efficiency.

[0007] The large-scale hydro-generator set brake action rod positioning and distance adjustment module of the present invention comprises a positioning and distance adjustment part and a clamping part which are arranged in sequence from top to bottom;

[0008] The positioning and distance adjusting part comprises a first horizontal plate and a first vertical plate, wherein the right end of the first horizontal plate is vertically connected to the middle part of the first vertical plate;

[0009] The clamping portion is U-shaped with its opening facing left, and comprises a second horizontal plate, a second vertical plate and a third horizontal plate connected in sequence;

[0010] The lower end of the first vertical plate is vertically connected to the second horizontal plate.

[0011] A U-shaped groove extending in the left-right direction is provided on the lower surface of the first horizontal plate, which can help the first horizontal plate to always be in the middle position during the process of being inserted between the action rod and the travel rod.

[0012] The left end of the first horizontal plate is provided with a chamfer, which can reduce the resistance during the process of the first horizontal plate being inserted between the working rod and the travel rod.

[0013] The thickness of the first horizontal plate is 2 mm, which reduces installation failures caused by large installation errors.

[0014] Two handles are arranged on the right side surface of the second vertical plate, which are convenient to use and prevent the large-scale hydro-generator set brake action rod positioning pitch adjustment module from falling during use.

[0015] Beneficial effects of the present invention:

[0016] (1) After the generator brake is in the dropped state, the first horizontal plate is inserted between the operating rod of the generator brake and the travel rod of the travel switch, and the travel switch body is clamped by the clamping part to prevent the large-scale hydro-turbine generator set brake operating rod positioning and spacing adjustment module from shifting during use; at this time, the commissioning personnel hold the operating rod with one hand to make it stick to the upper surface of the first horizontal plate, and use the other hand to tighten the fixing screw of the operating rod with a torque wrench to complete the inspection and maintenance work; this operation only takes about 5 minutes to complete, thereby improving work efficiency, improving work quality, and increasing the service life of the unit monitoring system automation components;

[0017] (2) During the process of tightening the mounting screws of the actuating rod, the first horizontal plate acts as a limiter for the actuating rod, thereby reducing the phenomenon that the actuating rod is not installed vertically;

[0018] (3) The thickness of the first horizontal plate is 2 mm, which reserves a 2 mm travel margin for the travel rod of the travel switch, thereby avoiding damage to the travel switch caused by excessive travel of the travel rod and reducing installation failures caused by large installation errors;

[0019] (4) The brake action rod positioning and distance adjustment module of large hydro-turbine generator sets has a built-in travel switch clamping function (referring to the clamping function formed by the cooperation of the first horizontal plate and the third horizontal plate, which enables the operator to change from the existing two-person cooperative operation to a single-person operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 for Figure 1 Left view of;

[0022] Figure 3It is a usage state diagram of the present invention;

[0023] In the figure: 1. Large hydro-turbine generator brake actuation rod positioning pitch adjustment module, 1a. first horizontal plate, 1b. first vertical plate, 1c. second horizontal plate, 1d. handle, 1e. second vertical plate, 1f. third horizontal plate, 1g. chamfer, 1h. U-shaped groove, 2. actuation rod, 3. travel rod, 4. travel switch body, 5. generator brake. DETAILED DESCRIPTION

[0024] The present invention is described in detail below with reference to the accompanying drawings.

[0025] like Figure 1 and Figure 2 As shown, a large-scale hydro-turbine generator brake lever positioning and spacing adjustment module includes a positioning and spacing adjustment part and a clamping part arranged in sequence from top to bottom. The positioning and spacing adjustment part includes a first horizontal plate 1a and a first vertical plate 1b, and the right end of the first horizontal plate 1a is vertically connected to the middle of the first vertical plate 1b. The clamping part is a U-shape with an opening facing left, which includes a second horizontal plate 1c, a second vertical plate 1e and a third horizontal plate 1f connected in sequence. The lower end of the first vertical plate 1b is vertically connected to the second horizontal plate 1c.

[0026] like Figure 2 As shown, a U-shaped groove 1h extending in the left-right direction is provided on the lower surface of the first horizontal plate 1a, which can help the first horizontal plate 1a to always be in the middle position during the process of being inserted between the action rod 2 and the travel rod 3.

[0027] like Figure 1 As shown, the left end of the first horizontal plate 1 a is provided with a chamfer 1 g, which can reduce the resistance during the process of inserting the first horizontal plate 1 a between the working rod and the stroke rod 3 .

[0028] like Figure 1 As shown, the thickness of the first horizontal plate 1a is 2 mm, which reduces installation failures caused by large installation errors.

[0029] like Figure 1 As shown, two handles 1d are provided on the right side of the second vertical plate 1e, which are convenient for use and prevent the large-scale hydro-generator set brake action rod positioning pitch adjustment module 1 from falling during use.

[0030] like Figure 3As shown, when in use, after the generator brake 5 is in the dropped state, the first horizontal plate 1a is inserted between the action rod 2 of the generator brake 5 and the travel rod 3 of the travel switch, and the travel switch body 4 is clamped by the clamping part to prevent the large-scale hydro-generator brake action rod positioning and pitch adjustment module 1 from being offset during use. At this time, the commissioning personnel hold the action rod 2 with one hand to make it stick to the upper surface of the first horizontal plate 1a, and use the other hand to tighten the fixing screw of the action rod 2 with a torque wrench, and the inspection and maintenance work can be completed.

[0031] The present invention is applicable to the debugging of the action rod 2 of the TSQZD280Ⅱ generator brake, and the travel switch used is OMRON HL-5100. The installation technical requirements of the action rod 2 of the generator brake 5 are as follows: when the generator brake 5 is in the falling state, the vertical action rod 2 presses the travel rod 3 of the travel switch. In this state, the remaining action stroke of the travel rod 3 is 2mm.

Claims

1. A large-scale hydro-generator brake action rod positioning and pitch adjustment module, characterized in that: It includes a positioning distance adjustment part and a clamping part which are arranged in sequence from top to bottom; The positioning and distance-adjusting portion comprises a first horizontal plate (1a) and a first vertical plate (1b), wherein the right end of the first horizontal plate (1a) is vertically connected to the middle of the first vertical plate (1b); The clamping portion is U-shaped with its opening facing leftward, and comprises a second horizontal plate (1c), a second vertical plate (1e) and a third horizontal plate (1f) connected in sequence; The lower end of the first vertical plate (1b) is vertically connected to the second horizontal plate (1c); When in use, after the generator brake (5) is in a dropped state, the first horizontal plate (1a) is inserted between the actuating rod (2) of the generator brake (5) and the travel rod (3) of the travel switch, and the travel switch body (4) is clamped by the clamping part, so as to prevent the large-scale hydro-generator set brake actuating rod positioning and adjusting distance module (1) from being offset during use.

2. The large-scale hydro-generator brake operating rod positioning and pitch adjustment module according to claim 1 is characterized in that: A U-shaped groove (1h) extending in the left-right direction is provided on the lower surface of the first horizontal plate (1a).

3. The large-scale hydro-generator brake operating rod positioning and pitch adjustment module according to claim 1 or 2, characterized in that: The left end of the first horizontal plate (1a) is provided with a chamfer (1g).

4. The large-scale hydro-generator brake operating rod positioning and pitch adjustment module according to claim 3 is characterized in that: The thickness of the first horizontal plate (1a) is 2 mm.

5. The large-scale hydro-generator brake operating rod positioning and pitch adjustment module according to claim 1, 2 or 4, characterized in that: Two handles (1d) are provided on the right side surface of the second vertical plate (1e).

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