Turbine threading device

Abstract

The utility model discloses a threading device of a steam turbine. The threading device comprises a cover plate, a sealing plate and a mounting seat, a through hole is formed in the cover plate; a threading hole is formed in the sealing plate; a threading cavity is formed in the mounting seat; the sealing plate is clamped between the cover plate and the mounting seat; and the sealing plate is rotatably arranged, so that the size of the communication area of the threading hole and the through hole can be adjusted. In the scheme, the size of the communication area of the threading hole and the through hole can be adjusted according to the wire diameter of the probe wire through the rotatable sealing plate, so that the threading device is adaptive to probe wires with different wire diameters, and the problem that the threading device in the existing steam turbine cannot be adaptive to probes with different wire diameters is effectively solved.

Description

Technical Field

[0001] The present application relates to the technical field of steam turbines, and in particular to a steam turbine threading device. Background Art

[0002] The steam turbine body of the waste incineration power plant is connected with thermal measuring probes such as temperature, speed, vibration, and expansion difference. The extension cables of these measuring probes need to pass through the inside of the steam turbine.

[0003] In the existing threading device, the hole diameter of the threading rubber plug is fixed, which cannot adapt to probe wires with different wire diameters and has poor versatility. Utility Model Content

[0004] In view of this, the purpose of the present application is to provide a steam turbine threading device, which is used to solve the problem that the existing steam turbine threading device cannot adapt to probes with different wire diameters.

[0005] In order to achieve the above technical purpose, the present application provides a steam turbine threading device, comprising: a cover plate, a sealing plate and a mounting seat;

[0006] The cover plate is provided with a through hole;

[0007] The sealing plate is provided with a threading hole;

[0008] The mounting seat is provided with a threading cavity;

[0009] The sealing plate is sandwiched between the cover plate and the mounting seat;

[0010] The sealing plate is rotatably arranged so as to adjust the size of the communicating area between the threading hole and the through hole.

[0011] Furthermore, the cover plate is provided with a plurality of the through holes;

[0012] The sealing plate is provided with a plurality of threading holes;

[0013] A plurality of rubber plugs are arranged in the threading cavity;

[0014] The numbers of the through holes, threading holes and rubber plugs correspond one to one.

[0015] Furthermore, the rubber plug is an open rubber plug.

[0016] Further, the mounting seat is conical;

[0017] The rubber plug is conical.

[0018] Furthermore, a protrusion is provided on the cover plate at a position corresponding to the through hole;

[0019] A sealing ring installation cavity is provided in the protrusion;

[0020] A plurality of first sealing rings for sleeve-connecting probe wires are arranged in the sealing ring installation cavity.

[0021] Furthermore, a plurality of the first sealing rings are arranged in the sealing ring installation cavity.

[0022] Further, it also includes a nut and a compression ring;

[0023] The compression ring extends into the sealing ring installation cavity;

[0024] The nut cover is connected to the protrusion and presses the compression ring.

[0025] Further, a temperature sensor is included;

[0026] The temperature sensor is connected to the probe line.

[0027] Furthermore, a second sealing ring is provided in the threading cavity.

[0028] Furthermore, a third sealing ring is connected between the mounting seat and the sealing plate.

[0029] It can be seen from the above technical scheme that the present application provides a steam turbine threading device, comprising: a cover plate, a sealing plate and a mounting seat; the cover plate is provided with a through hole; the sealing plate is provided with a threading hole; the mounting seat is provided with a threading cavity; the sealing plate is clamped between the cover plate and the mounting seat; the sealing plate can be rotatably arranged so as to adjust the size of the connecting area between the threading hole and the through hole.

[0030] In this solution, the size of the threading hole and the connecting area of ​​the through hole can be adjusted according to the wire diameter of the probe wire through a rotatable sealing plate, thereby adapting to probe wires of different wire diameters, effectively solving the problem that the threading device in the existing steam turbine cannot adapt to probes of different wire diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0032] Figure 1 A schematic structural diagram of a steam turbine threading device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0033] The technical solutions of the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the specification of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection requested by the present application.

[0034] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply 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 limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0035] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a replaceable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0036] See also Figure 1 A steam turbine threading device provided in an embodiment of the present application includes: a cover plate 10, a sealing plate 20 and a mounting seat 30; a through hole 11 is provided on the cover plate 10; a threading hole 21 is provided on the sealing plate 20; a threading cavity 31 is provided on the mounting seat 30; the sealing plate 20 is clamped between the cover plate 10 and the mounting seat 30; the sealing plate 20 can be rotatably arranged so as to adjust the size of the connecting area between the threading hole 21 and the through hole 11.

[0037] Specifically, the mounting seat 30 can pass through the flange on the wall of the steam turbine chamber, and the cover plate 10, the sealing plate 20 and the mounting seat 30 are installed on the steam turbine by bolts. The probe wire used to measure temperature, rotation speed, vibration, expansion difference, etc. passes through the threading cavity 31, the threading hole 21 and the through hole 11 in sequence and passes out of the steam turbine. When installing the sealing plate 20 and the cover plate 10, the sealing plate 20 can be rotated to adjust the connection area between the threading hole 21 and the through hole 11 to adapt to probe wires 70 of different wire diameters.

[0038] In application, the cover plate 10 is provided with a plurality of through holes 11 ; the sealing plate 20 is provided with a plurality of threading holes 21 ; the threading cavity 31 is provided with a plurality of rubber plugs; the numbers of the through holes 11 , threading holes 21 and rubber plugs correspond one to one.

[0039] That is, in this embodiment, multiple probe wires 70 can be passed through the cover plate 10 to achieve multi-point detection. At the same time, the rubber plugs correspond to the probe wires 70 one by one, which can increase the sealing of the threading cavity 31.

[0040] The rubber plug is an open-type rubber plug, so that during subsequent maintenance or replacement of the rubber plug, the probe line does not need to pass through the cover plate 10 and the sealing plate 20, and only the conical rubber plug needs to be opened. The open-type rubber plug refers to a circular rubber plug with a radial crack on one side so that the rubber plug can be opened.

[0041] In one embodiment, the mounting seat 30 is conical; the rubber plug is conical.

[0042] Specifically, in this embodiment, a conical rubber plug is used to replace the existing O-ring, which has the advantages of simpler structure, longer service life and lower manufacturing cost. Since the conical rubber plug, the mounting seat 30 and the threading cavity 31 are all conical, the rubber plug and the threading cavity 31 can fit better, so that after the probe line passes through the rubber plug, the rubber plug and the probe line have better sealing performance, so the effect of blocking oil and preventing leakage is better.

[0043] Furthermore, a protrusion 12 is provided on the cover plate 10 at a position corresponding to the through hole 11 ; a sealing ring installation cavity 13 is provided in the protrusion 12 ; and a plurality of first sealing rings 14 for sleeve-connecting the probe wires are provided in the sealing ring installation cavity 13 .

[0044] The first sealing ring 14 may be an O-shaped sealing ring, which has a sealing effect on the probe line 70 and the cover plate 10. A plurality of first sealing rings 14 are arranged in the sealing ring installation cavity 13 to ensure a sealing effect.

[0045] In application, a second sealing ring 32 is disposed in the threading cavity 31. A third sealing ring 33 is connected between the mounting seat 30 and the sealing plate 20.

[0046] By providing the first sealing ring 14, the second sealing ring 32 and the third sealing ring 33, the problem of oil leakage of the probe line 70 can be avoided, and the sealing effect of the probe line after threading can be ensured.

[0047] In one embodiment, it further includes a nut 40 and a compression ring 50 ; the compression ring 50 extends into the sealing ring installation cavity 13 ; the nut 40 covers the protrusion 12 and presses the compression ring 50 .

[0048] In another embodiment, a temperature sensor 60 is further included; the temperature sensor 60 is connected to the probe line.

[0049] The above are only preferred embodiments of the present application and are not intended to limit the present utility model. Although the present application has been described in detail with reference to the examples, those skilled in the art can still modify the technical solutions recorded in the aforementioned examples or make equivalent substitutions for some of the technical features therein. However, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A steam turbine threading device, characterized in that: include: A cover plate (10), a sealing plate (20) and a mounting seat (30); The cover plate (10) is provided with a through hole (11); The sealing plate (20) is provided with a threading hole (21); The mounting seat (30) is provided with a threading cavity (31); The sealing plate (20) is sandwiched between the cover plate (10) and the mounting seat (30); The sealing plate (20) is rotatably arranged so as to adjust the size of the communicating area between the threading hole (21) and the through hole (11); The cover plate (10) is provided with a plurality of through holes (11); The sealing plate (20) is provided with a plurality of threading holes (21); A plurality of rubber plugs are arranged in the threading cavity (31); The numbers of the through holes (11), threading holes (21) and rubber plugs correspond to each other; The rubber plug is an open type rubber plug, and a radial crack is opened on one side of the rubber plug; The mounting seat (30) is conical; The rubber plug is conical; The rubber plug is fitted with the threading cavity (31).

2. The steam turbine threading device according to claim 1, characterized in that: A protrusion (12) is provided on the cover plate (10) at a position corresponding to the through hole (11); A sealing ring installation cavity (13) is provided in the protrusion (12); A plurality of first sealing rings (14) for sleeve-connecting the probe wires (70) are arranged in the sealing ring installation cavity (13).

3. The steam turbine threading device according to claim 2, characterized in that: A plurality of the first sealing rings (14) are arranged in the sealing ring installation cavity (13).

4. The steam turbine threading device according to claim 2, characterized in that: Also includes a nut (40) and a compression ring (50); The compression ring (50) extends into the sealing ring installation cavity (13); The nut (40) is covered on the protrusion (12) and presses the compression ring (50).

5. The steam turbine threading device according to claim 1, characterized in that: Also included is a temperature sensor (60); The temperature sensor (60) is connected to the probe line (70).

6. The steam turbine threading device according to claim 1, characterized in that: A second sealing ring (32) is arranged in the threading cavity (31).

7. The steam turbine threading device according to claim 1, characterized in that: A third sealing ring (33) is connected between the mounting seat (30) and the sealing plate (20).

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