Steam sealing piece pulling device based on lever principle

Abstract

The utility model discloses a steam sealing piece pulling device based on the lever principle, and relates to the technical field of manual tools. A steam sealing piece pulling device based on the lever principle comprises a main body clamping plate, a movable clamping plate, a locking device and a handle, the movable clamping plate and the locking device are installed on the main body clamping plate through bolts, the front end of the main body clamping plate and the front end of the movable clamping plate are provided with olecranon type chucks, and the olecranon type chucks can enter a narrow space to work due to the fact that the front ends are narrow. The handle is tightly held to drive the locking device to slide the triangular block, the triangular block drives the movable pressing block to clamp the steam sealing piece, then the supporting foot at the bottom of the main body clamping plate serves as a fulcrum, the whole steam sealing piece pulling device is driven to warp or pull out the steam sealing piece according to the lever principle, and all force is in the same direction in the operation process. The device is simple and convenient to operate, the efficiency of replacing the steam sealing sheet during on-site maintenance is improved to a great extent, and the consumption of manpower and material resources is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of manual tools, in particular to a steam seal piece pulling device based on the lever principle. Background Art

[0002] Steam turbines are widely used and crucial in power plants and other occasions. Therefore, component maintenance and replacement for ensuring the normal operation of steam turbines are equally important. Among them, the steam blocking pieces located on the diaphragm shroud can prevent the leakage of steam, which is the power of the steam turbine. Whether they can work properly will affect the operation of the steam turbine. In actual use, the steam blocking pieces will be severely damaged due to steam erosion and corrosion, which will seriously affect the working efficiency of the steam turbine. To improve the efficiency and ensure the operation of the steam turbine, it is necessary to repair and replace the damaged steam blocking pieces on the diaphragm shroud in time.

[0003] In the existing steam seal piece replacement technology, it is mostly installed on the diaphragm shroud by using a special chisel and pressing the gasket. That is, the root thickness of the used steam seal piece is less than the width of the corresponding installation groove on the diaphragm shroud, so as to expand the root of the steam seal piece in the installation groove. Since the root of the steam seal piece is expanded in the installation groove during replacement and removal, it is difficult to remove, causing inconvenience to on-site construction, consuming a lot of manpower, and affecting the maintenance efficiency. Content of the Utility Model

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and provide a steam seal piece pulling device based on the lever principle, which can solve the problem that it is difficult to remove the root of the steam seal piece expanded in the installation groove during replacement and removal, causing inconvenience to on-site construction, consuming a lot of manpower, and affecting the maintenance efficiency.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A steam seal piece pulling device based on the lever principle includes a main body clamp plate, a movable clamp plate, a locking device and a handle. The movable clamp plate and the locking device are respectively installed on the main body clamp plate through bolts, and the front ends of the main body clamp plate and the movable clamp plate are eagle-beak type chucks.

[0006] Preferably, because the front end of the eagle-beak type chuck is relatively narrow, it can enter a narrow space for work.

[0007] Preferably, the main body clamp plate and the movable clamp plate are provided with triangular sliding channels to cooperate with the triangular blocks on the locking device.

[0008] Preferably, the eagle-beak type chuck on the locking device automatically bites the plane of the steam seal piece after the lever acting force.

[0009] Preferably, a toothed structure is arranged at the position where the movable clamp plate fits the steam seal piece, which can effectively fit the steam seal piece and increase the friction force.

[0010] Preferably, the handle is welded to the main body splint and the end of the locking device by welding respectively.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. For the steam seal piece extraction device based on the lever principle, by tightly holding the handle to drive the sliding triangular block of the locking device, the triangular block drives the movable pressing block to clamp the steam seal piece, and then using the support feet at the bottom of the main body splint as a fulcrum, the whole steam seal piece extraction device drives to lift or extract the steam seal piece by using the lever principle. And during the operation process, all forces are in one direction, and it is obvious that little effort is needed to extract the steam seal piece. This device is simple and convenient to operate, greatly improving the efficiency of replacing steam seal pieces during on-site maintenance and reducing the consumption of manpower and material resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present utility model will be further described below in conjunction with the drawings and embodiments:

[0014] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0015] Figure 2 is a structural schematic diagram of the outside of the movable splint of the present utility model;

[0016] Figure 3 is a structural schematic diagram of the outside of the locking device of the present utility model;

[0017] Figure 4 is a structural schematic diagram of the outside of the main body splint of the present utility model.

[0018] Reference numerals: 1. Main body splint; 2. Locking device; 3. Handle; 4. Movable splint. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] This part will describe the specific embodiments of the present utility model in detail. The preferred embodiments of the present utility model are shown in the drawings. The role of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but it cannot be understood as a limitation on the protection scope of the present utility model.

[0020] In the description of the present utility model, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model.

[0021] In the description of the present utility model, terms such as greater than, less than, exceeding, etc. are understood not to include the present number, while terms such as above, below, within, etc. are understood to include the present number. If the first and second are described, they are only used to distinguish technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0022] In the description of the present utility model, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.

[0023] Please refer to Figures 1-4 , the present utility model provides a technical solution: a steam seal sheet pulling device based on the lever principle, including a main body clamping plate, a movable clamping plate, a locking device and a handle;

[0024] The movable clamping plate 4 and the locking device 2 are respectively installed on the main body clamping plate 1 by bolts. The front ends of the main body clamping plate 1 and the movable clamping plate 4 are eagle-beak type clamping heads. Because the front ends are relatively narrow, the eagle-beak type clamping heads can enter narrow spaces for work.

[0025] Among them, the main body clamping plate 1 and the movable clamping plate 4 are provided with triangular sliding channels, which cooperate with the triangular blocks on the locking device. The eagle-beak type clamping head on the locking device 2 automatically bites the plane of the steam seal sheet after the lever force.

[0026] Among them, at the position where the movable clamping plate 4 fits the steam seal sheet, a toothed structure is provided, which can effectively fit the steam seal sheet and increase the friction. The handle 3 is welded to the ends of the main body clamping plate 1 and the locking device 2 by welding respectively.

[0027] Further, when using this device, place the eagle-beak type clamping head of the steam seal sheet pulling device at the root of the steam seal sheet, hold the handle 3 tightly with both hands. Then, when the handle 3 on the locking device 2 moves inward, it drives the locking device 2 to rotate around the bolt positioning point. The triangular block at the front end of the locking device 2 slides upward, pushing the root of the movable clamping plate 4 outward. The movable clamping plate 4 rotates around the bolt positioning point. While the root is being pushed outward, the eagle-beak type clamping head will tighten and fit the steam seal sheet. After clamping the steam seal sheet, use the support feet at the bottom of the main body clamping plate 1 as a fulcrum to support on the surface of the cylinder block, and drive the entire device to rotate counterclockwise around the fulcrum with the handle 3 to pry or pull out the steam seal sheet. The acting force in the whole process is in the counterclockwise direction, and not too much force is required, and the operation is obviously convenient.

[0028] By tightly holding the handle 3 to drive the locking device 2 to slide the triangular block, the triangular block drives the movable pressing block 4 to clamp the gland packing segment. Then, using the bottom support feet of the main body clamping plate 1 as the fulcrum, the entire gland packing segment pulling device uses the lever principle to pry or pull out the gland packing segment. And during the operation process, all forces are in one direction, so it is obvious that little effort is required to pull out the gland packing segment. This device is simple and convenient to operate, greatly improving the efficiency of replacing the gland packing segment during on-site maintenance, reducing the consumption of manpower and material resources. The front ends of the main body clamping plate 1 and the movable clamping plate 4 are eagle-beak type chucks, which can extend into narrow spaces for operation. A toothed structure is arranged at the position of the movable clamping plate that fits the gland packing segment, which can effectively fit the root of the gland packing segment and increase the friction force.

[0029] Working principle: When using this device, place the eagle-beak type chuck of the gland packing segment pulling device at the root of the gland packing segment, and tightly hold the handle 3 with both hands. Then, when the handle 3 on the locking device 2 moves inward, it drives the locking device 2 to rotate around the bolt positioning point. The triangular block at the front end of the locking device 2 slides upward, pushing the root of the movable clamping plate 4 outward. The movable clamping plate 4 rotates around the bolt positioning point. While the root is being pushed outward, the eagle-beak type chuck will tighten and fit the gland packing segment. After clamping the gland packing segment, use the bottom support feet of the main body clamping plate 1 as the fulcrum to support on the surface of the cylinder block, and drive the entire device with the handle 3 to rotate counterclockwise around the fulcrum to pry or pull out the gland packing segment. The acting force during the whole process is in the counterclockwise direction, and it is obvious that not much effort is required and the operation is convenient.

[0030] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art in the said technical field, various changes can be made without departing from the purpose of the present invention.

Claims

1. A device for removing steam seal pieces based on the lever principle, comprising a main body clamping plate, a movable clamping plate, a locking device and a handle, characterized in that: The movable splint (4) and the locking device (2) are respectively installed on the main splint (1) by bolts, and the front ends of the main splint (1) and the movable splint (4) are eagle-beak type chucks.

2. The steam seal piece extracting device based on the lever principle according to claim 1, characterized in that: Because the front end of the eagle-beak type chuck is relatively narrow, it can enter a narrow space for work.

3. The steam seal piece extraction device based on the lever principle according to claim 1, characterized in that: The main splint (1) and the movable splint (4) are provided with triangular sliding channels to cooperate with the triangular blocks on the locking device.

4. The steam seal piece extracting device based on the lever principle according to claim 1, characterized in that: The eagle-beak type chuck on the locking device (2) automatically bites the plane of the gland packing after the action of the lever force.

5. A device for removing steam seal pieces based on the lever principle according to claim 1, characterized in that: At the position where the movable splint (4) fits the gland packing, a toothed structure is provided, which can effectively fit the gland packing and increase the friction force.

6. The steam seal piece extracting device based on the lever principle according to claim 1, characterized in that: The handles (3) are respectively welded to the ends of the main splint (1) and the locking device (2) by welding.

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