CN214351682U

CN214351682U - Grinding device for sealing surface of steam inlet flange of cylinder

Info

Publication number: CN214351682U
Application number: CN202022722156.4U
Authority: CN
Inventors: 王晨; 陆荣华; 徐运星; 倪健
Original assignee: Huaneng Shanghai Electric Power Maintenance Co ltd
Current assignee: Huaneng Shanghai Electric Power Maintenance Co ltd
Priority date: 2020-11-23
Filing date: 2020-11-23
Publication date: 2021-10-08
Anticipated expiration: 2030-11-23

Abstract

The utility model relates to a grinder for cylinder admission flange seal face, including the lapping plate, the transmission bearing, the locating plate, rotate the lead screw and rotate the spanner, the lead screw through-hole has been seted up at the middle part of locating plate, the bearing groove with transmission bearing external diameter looks adaptation is seted up at the top of lead screw through-hole, the bottom surface of lapping plate is equipped with the bearing fixed station with transmission bearing internal diameter looks adaptation, the top surface of lapping plate is equipped with the grinding layer, the bearing inslot is located to the bottom of transmission bearing, the inner circle top and the bearing fixed station fixed connection of transmission bearing, the lead screw passes the lead screw through-hole in proper order to rotate, the bottom surface middle part fixed connection of transmission bearing and lapping plate, the fixed bottom of locating the rotation lead screw of rotation spanner. Compared with the prior art, the utility model discloses utilize locating plate, transmission bearing, the three structure of locating plate, can accomplish the grinding to the sealed face of admission flange, be applicable to most flange seal face and grind, grind effectually, convenient to use effectively reduces the maintenance cost of cylinder admission flange.

Description

Grinding device for sealing surface of steam inlet flange of cylinder

Technical Field

The utility model relates to a grinder especially relates to a grinder that is used for sealed face of cylinder admission flange.

Background

In the prior art, because a steam turbine body needs to be disassembled and separated for overhauling or delivering an steam distribution mechanism for overhauling, a flange connection mode is usually adopted for the pipeline connection between a cylinder and a valve of the steam distribution mechanism. The flange sealing surface generates a gap at a joint surface due to creep generated by the long-term operation of an installation process or materials so as to blow loss steam leakage, the defect of the flange sealing surface needs to be repaired during maintenance, the common treatment scheme is that the flange sealing surface is disassembled and returned to a manufacturing plant for repair, and if the equipment has too large mass and volume and is inconvenient to return to the manufacturing plant or the defect degree is light, a professional manufacturer needs to install a repair machine on site for repair. The upper complaint proposal has the problems of long maintenance window, high cost, complicated procedures and the like.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a grinding device for cylinder admission flange sealing face in order to overcome the defect that above-mentioned prior art exists.

The purpose of the utility model can be realized through the following technical scheme:

the utility model provides a grinder for sealed face of cylinder admission flange, includes lapping plate, transmission bearing, locating plate, rotation lead screw and rotation spanner, the middle part of locating plate seted up the lead screw through-hole, the top of lead screw through-hole seted up with the bearing groove of transmission bearing external diameter looks adaptation, the bottom surface of lapping plate be equipped with the bearing fixed station of transmission bearing internal diameter looks adaptation, the top surface of lapping plate be equipped with the grinding layer, the bottom of transmission bearing locate the bearing inslot, the inner circle top and the bearing fixed station fixed connection of transmission bearing, the rotation lead screw pass the bottom surface middle part fixed connection of lead screw through-hole, transmission bearing and lapping plate in proper order, the fixed bottom of locating the rotation lead screw of rotation spanner.

Preferably, the middle part of the bottom surface of the grinding plate is provided with a screw rod screw hole matched with the shape of the rotary screw rod, and the rotary screw rod sequentially penetrates through the screw rod through hole and the transmission bearing to be in threaded connection with the screw rod screw hole of the grinding plate.

Preferably, the grinding layer is grinding sand.

Preferably, the abrasive layer is self-adhesive sand paper.

Preferably, the top of the grinding plate is provided with a positioning table matched with the inlet shape of the steam inlet flange.

Preferably, a plurality of positioning screw holes are formed in the peripheral side of the positioning plate, the grinding device further comprises a plurality of connecting bolts, and the positioning plate is fixedly connected with the steam inlet flange through the connecting bolts and the positioning screw holes.

Preferably, four positioning screw holes are formed on the peripheral side of the positioning plate.

Preferably, the rotary wrench is a ratchet wrench.

Preferably, the transmission bearing is an angular contact ball bearing.

Preferably, the diameter of the grinding plate is 40 cm.

The bottom of the bearing fixing table is provided with a fixing base which is convenient for the fixed installation of the transmission bearing.

Compared with the prior art, the utility model has the advantages of as follows:

(1) the utility model can finish grinding the sealing surface of the steam inlet flange by utilizing the three structures of the positioning plate, the transmission bearing and the positioning plate, is suitable for grinding most of flange sealing surfaces, has good grinding effect and convenient use, and effectively reduces the maintenance cost of the steam inlet flange of the cylinder;

(2) the grinding plate of the utility model utilizes the positioning platform structure to be in positioning contact with the steam inlet flange, which can effectively improve the convenient degree of installation and grinding effect of the utility model;

(3) the utility model discloses a grinding precision can be adjusted according to connecting bolt on the locating plate and admission flange joint's pretightning force, effectively improves the utility model discloses an application scope and result of use.

Drawings

FIG. 1 is a schematic cross-sectional structure view of the utility model in use;

FIG. 2 is a schematic cross-sectional view of the polishing plate of the present invention;

fig. 3 is a schematic cross-sectional structure view of the positioning plate of the present invention.

The grinding device comprises a grinding plate 1, a grinding plate 2, a transmission bearing 3, a positioning plate 4, a rotary screw rod 5, a rotary wrench 6, a screw rod through hole 7, a bearing groove 8, a bearing fixing table 9, a grinding layer 10, a screw rod screw hole 11, a positioning table 12, a positioning screw hole 13, a connecting bolt 14 and a steam inlet flange.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Note that the following description of the embodiments is merely an example of the nature, and the present invention is not intended to limit the application or the use thereof, and the present invention is not limited to the following embodiments.

Examples

The utility model provides a grinder for cylinder admission flange seal face, as shown in fig. 1 ~ 3, including lapping plate 1, transmission bearing 2, locating plate 3, rotation lead screw 4 and rotation spanner 5, lead screw through-hole 6 has been seted up at the middle part of locating plate 3, bearing groove 7 with 2 external diameter looks adaptations of transmission bearing is seted up at the top of lead screw through-hole 6, lapping plate 1's bottom surface is equipped with the bearing fixed station 8 with 2 internal diameter looks adaptations of transmission bearing, lapping plate 1's top surface is equipped with grinding layer 9, in bearing groove 7 was located to transmission bearing 2's bottom, transmission bearing 2's inner circle top and bearing fixed station 8 fixed connection, rotation lead screw 4 passes lead screw through-hole 6 in proper order, transmission bearing 2 and lapping plate 1's bottom surface middle part fixed connection, rotation spanner 5 is fixed in the bottom of rotation lead screw 4.

In this embodiment, the rotating wrench 5 is a ratchet wrench, the driving bearing 2 is an angular contact ball bearing, and the diameter of the grinding plate 1 is 40 cm.

In order to improve the utility model discloses lapping plate 1 is stable with being connected of drive bearing 2, and the bottom of bearing fixed station 8 is equipped with the fixed baseplate of the 2 fixed mounting of drive bearing of being convenient for.

In this embodiment, in order to facilitate the connection between the grinding plate 1 and the rotating screw rod 4, the middle portion of the bottom surface of the grinding plate 1 is provided with a screw rod screw hole 10 adapted to the shape of the rotating screw rod 4, and the rotating screw rod 4 sequentially penetrates through the screw rod through hole 6 and the transmission bearing 2 to be screwed with the screw rod screw hole 10 of the grinding plate 1.

The utility model discloses an in the embodiment, the wearing layer 9 is the abrasive sand, scribbles on the top surface of lapping plate and establishes the one deck abrasive sand as wearing layer 9, grinds admission flange 14.

The utility model discloses an in another kind of embodiment, the wearing layer 9 is self-adhesion abrasive paper, pastes on the top surface of abrasive sheet and establishes self-adhesion abrasive paper as wearing layer 9, grinds admission flange 14, and self-adhesion abrasive paper can be changed according to the wearing and tearing condition.

The utility model discloses an among the embodiment, do not take place to remove for the horizontal position that improves lapping plate 1 and admission flange 14, improve the grinding effect, the top of lapping plate 1 is equipped with the location platform 11 with the 14 import shape adaptations of admission flange.

The utility model discloses an among the embodiment, for the convenience of being connected of locating plate 3 and admission flange 14, a plurality of location screws 12 have been seted up to the week side of locating plate 3, and grinder still includes a plurality of connecting bolt 13, and locating plate 3 passes through connecting bolt 13, location screw 12 and admission flange 14 fixed connection. Specifically, four positioning screw holes 12 are formed on the periphery of the positioning plate 3.

The utility model discloses during the use, install drive bearing 2 earlier in bearing groove 7, then with the bearing fixed station 8 of abrasive disc 1 and drive bearing 2's inner circle fixed connection to will rotate lead screw 4 and abrasive disc 1 fixed connection, utilize connecting bolt 13, location screw 12 with locating plate 3 and admission flange 14 fixed connection at last, locating plate 3 compresses tightly abrasive disc 1 in admission flange 14's bottom surface. The rotary wrench 5 is used for driving the rotary screw rod 4 to rotate, the grinding plate 1 rotates simultaneously, and the bottom surface of the steam inlet flange 14 is ground.

The above embodiments are merely examples and do not limit the scope of the present invention. These embodiments may be implemented in other various manners, and various omissions, substitutions, and changes may be made without departing from the technical spirit of the present invention.

Claims

1. The grinding device for the sealing surface of the steam inlet flange of the cylinder is characterized by comprising a grinding plate (1), a transmission bearing (2), a positioning plate (3), a rotary screw rod (4) and a rotary wrench (5), wherein a screw rod through hole (6) is formed in the middle of the positioning plate (3), a bearing groove (7) matched with the outer diameter of the transmission bearing (2) is formed in the top of the screw rod through hole (6), a bearing fixing table (8) matched with the inner diameter of the transmission bearing (2) is arranged on the bottom surface of the grinding plate (1), a grinding layer (9) is arranged on the top surface of the grinding plate (1), the bottom of the transmission bearing (2) is arranged in the bearing groove (7), the top of an inner ring of the transmission bearing (2) is fixedly connected with the bearing fixing table (8), and the rotary screw rod (4) sequentially penetrates through holes (6), The transmission bearing (2) is fixedly connected with the middle part of the bottom surface of the grinding plate (1), and the rotating wrench (5) is fixedly arranged at the bottom of the rotating screw rod (4).

2. The grinding device for the sealing surface of the steam inlet flange of the cylinder according to claim 1, characterized in that the middle of the bottom surface of the grinding plate (1) is provided with a screw rod screw hole (10) matched with the shape of the rotary screw rod (4), and the rotary screw rod (4) sequentially passes through the screw rod through hole (6) and the transmission bearing (2) to be in threaded connection with the screw rod screw hole (10) of the grinding plate (1).

3. A grinding device for a cylinder steam inlet flange sealing surface according to claim 1, characterized in that the grinding layer (9) is grinding sand.

4. A grinding device for a cylinder inlet flange sealing surface according to claim 1, characterized in that the grinding layer (9) is a self-adhesive sand paper.

5. A grinding device for a sealing surface of a steam inlet flange of a cylinder according to claim 1, characterized in that the top of the grinding plate (1) is provided with a positioning table (11) matched with the shape of an inlet of the steam inlet flange (14).

6. The grinding device for the sealing surface of the steam inlet flange of the cylinder is characterized in that a plurality of positioning screw holes (12) are formed in the peripheral side of the positioning plate (3), the grinding device further comprises a plurality of connecting bolts (13), and the positioning plate (3) is fixedly connected with the steam inlet flange (14) through the connecting bolts (13) and the positioning screw holes (12).

7. The grinding device for the sealing surface of the steam inlet flange of the cylinder as claimed in claim 6, characterized in that the positioning plate (3) is provided with four positioning screw holes (12) on the periphery.

8. A grinding device for a sealing surface of a cylinder steam inlet flange according to claim 1, characterized in that the rotary wrench (5) is a ratchet wrench.

9. A grinding device for a sealing surface of a cylinder steam inlet flange according to claim 1, characterized in that the transmission bearing (2) is an angular contact ball bearing.

10. A grinding device for a cylinder steam inlet flange sealing surface according to claim 1, characterized in that the grinding plate (1) has a diameter of 40 cm.