CN218816543U - Steam turbine high pressure cylinder rear shaft seal steam leakage treatment device - Google Patents

Abstract

The utility model belongs to the technical field of the steam turbine high pressure jar, especially, be a steam turbine high pressure jar rear shaft seal processing apparatus that leaks. Comprises a main body and a main shaft, the guide plate can be limited to abut against the outer surface of the main shaft by pulling the guide frame to enable the elastic bulge to be clamped and connected in the support, the ring frame is further pushed to enable the elastic column to be clamped and connected in the limiting clamping groove, the reset spring can be used for driving the limiting pin to automatically reset in the positioning hole to fix the limiting pin against loosening, and at the moment, the steam can be blocked by the guide frame to prevent overflow, so that the operation is simple, and the limiting pin can be conveniently detached, maintained and replaced for use; through setting up the arc pad in the inboard of ring frame, slidable mounting utilizes its mobility to lead to it after the leading truck blocks steam in the inside of backwash tank, makes its inside backward flow to the main part through the backwash tank prevent a large amount of overflow, and when inside steam volume was too much, the accessible set up in the extraction tube discharge in the main part outside, makes inside steam volume control improve the result of use at the invariable value.

Description

Steam turbine high pressure cylinder rear shaft seal steam leakage treatment device

Technical Field

The utility model belongs to the technical field of the steam turbine high pressure cylinder, concretely relates to steam turbine high pressure cylinder rear shaft seal processing apparatus that leaks.

Background

High-pressure steam turbine cylinders are one of the important equipments in power plants. The steam turbine high pressure cylinder discovers that there is the too big phenomenon of back bearing seal steam leakage volume at the operation in-process, has seriously influenced the thermal efficiency of unit, and the bearing frame is scurried into along the axial to the bearing seal steam leakage moreover, has caused the main engine lubricating oil water content to be bigger. The reason for this is that because the main shaft of the steam turbine must penetrate out of the cylinder, a certain radial gap must be left between the main shaft and the cylinder, and the steam pressure in the cylinder is unequal to the external atmospheric pressure, the high-pressure steam in the steam turbine will inevitably leak out through the gap, causing working medium loss and deteriorating the operating environment, and possibly heating the shaft neck or rushing into the bearing to deteriorate the lubricating oil quality; or the external air leaks into the low-pressure end to destroy the vacuum, thereby increasing the load of the steam extraction equipment and reducing the efficiency of the unit. Therefore, it is necessary to install a leakage air treatment device outside the shaft seal.

The original steam turbine high pressure cylinder rear shaft seal steam leakage treatment device has the following defects when in use:

1. the existing high-pressure cylinder rear shaft seal steam leakage treatment mechanism needs more time to install in the use process, and the connecting part is loosened due to long-time steam erosion in the use process to influence the use effect, so that the high-pressure cylinder rear shaft seal steam leakage treatment mechanism is inconvenient to maintain, replace and use conveniently;

2. most of the existing treatment mechanisms reduce the steam overflow amount, and the overflow steam cannot be recovered, so that the use effect is reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a steam turbine high pressure cylinder rear shaft seal processing apparatus that leaks vapour, for solving the above-mentioned problem that exists among the prior art, the utility model provides a steam turbine high pressure cylinder rear shaft seal processing apparatus that leaks vapour has and can conveniently install and remove and be convenient for the maintenance change use and can will spill over the characteristics of steam reflux.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a steam turbine high pressure cylinder back bearing seal leaks vapour processing apparatus, includes main part and main shaft, the both ends of main part are provided with outside convex boss, the outside of main shaft is provided with and is used for blockking the steam that spills over and forms the leading guide frame to it, the upper end of leading guide frame is provided with the ring frame that is used for being connected with the boss, the outside of boss is provided with and is used for spacing the spacing spacer pin that prevents not hard up of ring frame, the both ends outside of main shaft is provided with and is used for the spacing support of the lower extreme with the leading guide frame, the lower extreme inboard of leading guide frame is provided with and is used for laminating in the deflector of main shaft surface, the backward flow groove that is used for steam reflux is seted up to one side inside of boss.

As the utility model discloses a preferred technical scheme of steam turbine high pressure cylinder rear shaft seal processing apparatus that leaks, the inside of backwash tank is provided with and is used for the connecting rod as an organic whole with two structural connection of boss, the inboard of ring frame is provided with slidable mounting in the inside arc pad of backwash tank.

As the utility model discloses a preferred technical scheme of steam turbine high pressure cylinder rear shaft seal processing apparatus that leaks, the one end of ring frame is provided with and is used for being connected the spacing elasticity post with the leading truck with the boss, the spacing draw-in groove that is used for elasticity post block to connect is offered to one side of boss.

As the utility model discloses a preferred technical scheme of steam turbine high pressure cylinder rear shaft seal processing apparatus, the locating hole that the one end block that is used for the spacer pin is connected is inside offered to one side of elasticity post, the one end outside cover of spacer pin is equipped with the reset spring who is used for driving spacer pin automatic re-setting.

As the utility model discloses a preferred technical scheme of steam turbine high pressure cylinder rear shaft seal processing apparatus, many places are seted up in the outside of boss and are used for installing spacer pin and reset spring's T type hole.

As the utility model discloses a preferred technical scheme of steam turbine high pressure cylinder rear shaft seal processing apparatus, lower extreme one side of leading truck is provided with and is used for the block to connect in the inside elastic bulge of support.

Compared with the prior art, the beneficial effects of the utility model are that:

the guide frame is pulled to enable the elastic bulges to be clamped and connected in the support, so that the guide plate can be limited to enable the guide plate to abut against the outer surface of the main shaft, the ring frame is further pushed to enable the elastic columns to be clamped and connected in the limiting clamping grooves, the limiting pins can be driven by the reset springs to automatically reset in the positioning holes to fix the limiting pins to prevent the limiting pins from loosening, steam can be blocked by the guide frame to prevent the limiting pins from overflowing, the operation is simple, and the guide frame can be conveniently detached, maintained and replaced for use;

through setting up the arc pad in the inboard of ring frame to make its slidable mounting in the inside of backward flow groove, utilize its mobility to its direction after blockking steam through the leading truck, make it prevent a large amount of overflows to the inside backward flow of main part through the backward flow groove, and when inside steam volume was too much, the accessible set up in the extraction tube of main part outside and discharges, make inside steam volume control improve the result of use at the constant value.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic view of the overall appearance structure of the present invention;

FIG. 2 is a schematic view of the inner part of one end of the main body according to the present invention;

FIG. 3 is a schematic view of a part A of the present invention;

fig. 4 is a schematic structural view of a connecting portion between the guide frame and the main shaft of the present invention;

in the figure: 1. a main body; 2. a main shaft; 3. a boss; 4. a guide frame; 5. a ring frame; 6. a limit pin; 7. a support; 8. a guide plate; 9. a reflux tank; 10. a connecting rod; 11. an arc-shaped pad; 12. an elastic column; 13. a limiting clamping groove; 14. positioning holes; 15. a return spring; 16. a T-shaped hole; 17. and (4) elastic bulges.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Examples

Referring to fig. 1-4, the present invention provides the following technical solutions: the utility model provides a steam turbine high pressure cylinder rear shaft seal processing apparatus that leaks vapour, including main part 1 and main shaft 2, the both ends of main part 1 are provided with outside convex boss 3, the outside of main shaft 2 is provided with and is used for blockking the steam that overflows and to its leading guide 4 that forms, the upper end of guide 4 is provided with the ring frame 5 that is used for being connected with boss 3, the outside of boss 3 is provided with and is used for spacing the spacing spacer pin 6 that prevents not hard up with ring frame 5, the both ends outside of main shaft 2 is provided with and is used for the spacing support 7 of the lower extreme of guide 4, the lower extreme inboard of guide 4 is provided with the deflector 8 that is used for laminating in main shaft 2 surface, backflow groove 9 that is used for the steam backward flow is seted up to one side inside of boss 3, guide 4 has certain elasticity in this embodiment, can form the extrusion force to deflector 8 after the installation and make it laminate with main shaft 2.

Specifically, the inside of the return channel 9 is provided with a connecting rod 10 for connecting two structures of the boss 3 into a whole, the inner side of the ring frame 5 is provided with an arc-shaped pad 11 slidably mounted inside the return channel 9, and the arc-shaped pad 11 is used for guiding steam in the embodiment.

Specifically, one end of the ring frame 5 is provided with an elastic column 12 for connecting with the boss 3 to limit the position of the guide frame 4, one side of the boss 3 is provided with a limit slot 13 for clamping and connecting the elastic column 12, and the elastic column 12 in the embodiment can contract inwards under the extrusion of external force.

Specifically, one side of the elastic column 12 is internally provided with a positioning hole 14 for one end of the limit pin 6 to be clamped and connected, one end of the limit pin 6 is sleeved with a return spring 15 for driving the limit pin 6 to automatically reset, and the return spring 15 is further used for preventing the limit pin 6 from loosening and slipping in the embodiment.

Specifically, a plurality of T-shaped holes 16 for installing the limit pin 6 and the return spring 15 are formed in the outer side of the boss 3.

Specifically, an elastic protrusion 17 for engaging and connecting with the inside of the support 7 is disposed on one side of the lower end of the guide frame 4, and in this embodiment, the elastic protrusion 17 is located on the outer side of the structure protruding outward from the one side of the lower end of the guide frame 4.

The utility model discloses a theory of operation and use flow: the utility model discloses a pulling and setting up the leading truck 4 in the main shaft 2 outside, make the elastic bulge 17 block that sets up in the lower extreme outside of leading truck 4 connect in the inside of main shaft 2 one end support 7, can be with lieing in leading truck 4 lower extreme inboard deflector 8 spacing make it support the surface of main shaft 2, further promotion sets up ring frame 5 in the upper end of leading truck 4 can make the elastic column 12 block that sets up in one end of ring frame 5 connect in the spacing draw-in groove 13 outside main part 1 one end boss 3, utilize the elasticity of the reset spring 15 that sets up in the boss 3 outside T type hole 16, can drive the spacer pin 6 automatic re-setting of cover locating in reset spring 15, make its one end block connect in the locating hole 14 of one side of elastic column 12 inside with it prevent not hard up, leading truck 4 is bent into the semicircular structure at this moment and can prevent overflowing steam from blockking, easy operation can dismantle the maintenance change and use conveniently; after the arc-shaped pad 11 is arranged on the inner side of the ring frame 5 and is arranged inside the reflux groove 9 on one side of the boss 3 in a sliding mode, steam is blocked by the guide frame 4 and then can be guided by utilizing the flowability of the steam, the steam is enabled to flow back to the inside of the main body 1 through the reflux groove 9 arranged inside one side of the boss 3, a large amount of overflow is prevented, the steam is discharged through the extraction pipe arranged outside the main body 1 when the steam amount inside the steam is too much, and the use effect is improved by controlling the steam amount inside the steam at a constant value.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. The utility model provides a steam turbine high pressure cylinder rear shaft seal processing apparatus that leaks steam which characterized in that: including main part (1) and main shaft (2), the both ends of main part (1) are provided with outside convex boss (3), the outside of main shaft (2) is provided with and is used for stopping the steam that overflows and to its leading guide bracket (4) that forms, the upper end of leading guide bracket (4) is provided with ring frame (5) that is used for being connected with boss (3), the outside of boss (3) is provided with and is used for spacing stop pin (6) that prevent not hard up with ring frame (5), the both ends outside of main shaft (2) is provided with and is used for spacing support (7) with the lower extreme of leading guide frame (4), the lower extreme inboard of leading guide frame (4) is provided with and is used for laminating in deflector (8) of main shaft (2) surface, backflow groove (9) that are used for steam reflux are seted up to one side inside of boss (3).

2. The steam turbine high pressure cylinder rear shaft seal steam leakage treatment device according to claim 1, characterized in that: the inner side of the ring frame (5) is provided with an arc-shaped pad (11) which is slidably mounted in the reflux groove (9).

3. The steam turbine high pressure cylinder rear shaft seal steam leakage treatment device of claim 1, characterized in that: one end of the ring frame (5) is provided with an elastic column (12) which is used for being connected with the boss (3) to limit the guide frame (4), and one side of the boss (3) is provided with a limiting clamping groove (13) which is used for clamping and connecting the elastic column (12).

4. The steam turbine high pressure cylinder rear shaft seal steam leakage treatment device according to claim 3, characterized in that: one side of the elastic column (12) is internally provided with a positioning hole (14) for clamping and connecting one end of the limiting pin (6), and the outer side of one end of the limiting pin (6) is sleeved with a reset spring (15) for driving the limiting pin (6) to automatically reset.

5. The steam turbine high pressure cylinder rear shaft seal steam leakage treatment device according to claim 1, characterized in that: the outer side of the boss (3) is provided with a plurality of T-shaped holes (16) for mounting the limiting pin (6) and the return spring (15).

6. The steam turbine high pressure cylinder rear shaft seal steam leakage treatment device according to claim 1, characterized in that: and one side of the lower end of the guide frame (4) is provided with an elastic bulge (17) which is used for being clamped and connected in the support (7).

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