CN215762021U

CN215762021U - Novel generator set water inlet valve servomotor

Info

Publication number: CN215762021U
Application number: CN202122096180.6U
Authority: CN
Inventors: 何茂鑫; 韩钊; 王书华; 周霖轩; 黄卉; 洪云来; 刘轲; 罗望; 朱能飞; 黄小军; 王志清; 吴肇来; 陈灶; 胡雷鸣; 洪福文; 袁长征; 丁岳平
Original assignee: JIANGXI HONGPING PUMPED STORAGE CO LTD; State Grid Xinyuan Co Ltd
Current assignee: JIANGXI HONGPING PUMPED STORAGE CO LTD; State Grid Xinyuan Co Ltd
Priority date: 2021-09-01
Filing date: 2021-09-01
Publication date: 2022-02-08
Anticipated expiration: 2031-09-01

Abstract

The utility model discloses a novel servomotor for a water inlet valve of a generator set, which comprises: the bottom of the oil cylinder is provided with a lower hanging head; the lower hanging head is hinged with the fixed ear plate through a pin shaft; oil flow channels are respectively formed in two ends of the pin shaft, a cylinder barrel is sleeved outside the two ends of the pin shaft, and an oil port is formed in the cylinder barrel; one end of the oil port is connected with external high-pressure oil, and the other end of the oil port is communicated with the oil flow channel; one end of the oil flow channel at the two ends of the pin shaft is sequentially connected with the right elbow and the right seamless steel tube to be connected with the rodless cavity of the oil cylinder, and the other end of the oil flow channel is sequentially connected with the left elbow and the left seamless steel tube to be connected with the rod cavity of the oil cylinder. The utility model saves cost because of canceling the high-pressure hose, thoroughly solves the problem that the servomotor endangers the personal safety and the equipment safety because of the pipe explosion accident possibly generated by the high-pressure hose, reduces the economic loss caused by the accident shutdown, and improves the operation reliability. Meanwhile, the high-pressure oil pipes with the rod cavities and the high-pressure oil pipes without the rod cavities are respectively arranged on two sides of the oil cylinder, so that the overhaul is more convenient.

Description

Novel generator set water inlet valve servomotor

Technical Field

The utility model relates to a novel water inlet valve servomotor of a generator set, and belongs to the technical field of hydroelectric power generation.

Background

When the pumped storage power station unit operates, the cylinder barrel and the high-pressure seamless steel pipe and the like can swing integrally along the lower hanging head along the opening and closing actions of the water inlet valve as a servomotor for opening and closing the water inlet valve. Generally, the high-pressure oil flow of the water inlet valve oil pressure device is connected with a rod cavity and a rodless cavity of a cylinder barrel by a high-pressure hose.

The high-pressure hose is often distorted and deformed due to the frequent opening and closing actions of the water inlet valve, and fatigue damage is inevitable, so that a pipe explosion accident can occur, oil is sprayed out to pollute the environment, cause the shutdown of a unit to influence power generation and cause economic loss, and when the pipe is exploded, the personal safety and the equipment safety can be endangered if someone is on the site.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provides a novel servomotor for a water inlet valve of a generator set.

A novel servomotor for a water inlet valve of a generator set comprises:

the bottom of the oil cylinder is provided with a lower hanging head;

the lower hanging head is hinged with the fixed ear plate through a pin shaft;

oil flow channels are respectively formed in two ends of the pin shaft, a cylinder barrel is sleeved outside the two ends of the pin shaft, and an oil port is formed in the cylinder barrel; one end of the oil port is connected with external high-pressure oil, and the other end of the oil port is communicated with the oil flow channel;

one end of the oil flow channel at the two ends of the pin shaft is sequentially connected with the right elbow and the right seamless steel tube to be connected with the rodless cavity of the oil cylinder, and the other end of the oil flow channel is sequentially connected with the left elbow and the left seamless steel tube to be connected with the rod cavity of the oil cylinder.

Further, a base is arranged at the bottom of the lower hanging head.

Furthermore, the bottom of the cylinder barrel is fixedly connected with the fixed lug plate through a metal plate fixing piece.

Further, a sealing ring is arranged between the left elbow and the oil flow channel.

Furthermore, a combined sealing ring is arranged on the combined surface of the cylinder barrel and the pin shaft.

Further, the number of the single sides of the combined sealing rings is 2.

Furthermore, an upper hanging head is arranged at the top of the oil cylinder.

Compared with the prior art, the utility model has the following beneficial effects:

the design scheme of the high-pressure pipeline of the water inlet valve servomotor of the water turbine generator set utilizes the seamless steel pipe, the elbow, the pin shaft, the cylinder barrel and the oil flow channel to replace the high-pressure hose, so that the servomotor body, the seamless steel pipe with the rod cavity and the rodless cavity, the pin shaft and the like form an integral part, and the integral part rotates along the fixed lug plate of the base at an angle, so that the high-pressure pipeline fixed outside is connected with the oil flow channel on the pin shaft, the aim of transferring hydraulic oil is fulfilled, the personal and equipment safety endangered by the possible pipe explosion accident of the high-pressure hose of the servomotor is thoroughly solved, the economic loss caused by accident shutdown is reduced, the operation reliability is improved, and the cost is also saved; the high-pressure seamless steel pipes with the rod cavities and the high-pressure seamless steel pipes without the rod cavities are respectively arranged on two sides, so that a better space is provided for maintenance.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a view of the present invention in the direction of A;

FIG. 3 is a view of the utility model in the direction B;

in the figure: 1. an upper hanging head; 2. a piston rod; 3. a servomotor cylinder body; 4. a piston; 5. a right seamless steel tube; 6. a right elbow; 7. a pin shaft; 8. an oil port; 9. a metal plate fixing piece; 10. a base; 11. a cylinder barrel; 12. a combined sealing ring; 13. an oil flow conduit; 14. a left elbow; 15. a seal ring; 16. fixing the ear plate; 17. a lower hanging head; 18. left seamless steel tube.

Detailed Description

The utility model is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

As shown in fig. 1-3, a novel generator set inlet valve servomotor is disclosed, comprising:

the bottom of the oil cylinder is provided with a lower hanging head 17;

the lower hanging head 17 is hinged with the fixed lug plate 16 through a pin shaft 7;

oil flow channels 13 are respectively formed in two ends of the pin shaft 7, a cylinder barrel 11 is sleeved outside the two ends of the pin shaft 7, and an oil port 8 is formed in the cylinder barrel 11; one end of the oil port 8 is connected with external high-pressure oil, and the other end is communicated with the oil flow channel 13;

one end of an oil flow channel 13 at the two ends of the pin shaft 7 is sequentially connected with a right elbow 6 and a right seamless steel pipe 5 to be connected with a rodless cavity of the oil cylinder, and the other end of the oil flow channel is sequentially connected with a left elbow 14 and a left seamless steel pipe 18 to be connected with a rod cavity of the oil cylinder;

the concrete structure of hydro-cylinder includes: a piston rod 2 is arranged in the servomotor cylinder 3, a piston 4 is arranged at the bottom of the piston rod 2, and the upper hanging head 1 is connected with a pivot operation lug of the valve body of the water inlet valve.

In this embodiment, the piston 4 has a servomotor cavity above it and a servomotor cavity below it. The bottom of the lower hanging head 17 is provided with a base 10, the two fixed ear plates 16 are vertically arranged on the base 10, the lower hanging head 17 is arranged between the two fixed ear plates 16 and then connected through a pin shaft 7, and the pin shaft 7 penetrates through the fixed ear plates 16 and is hinged with the lower hanging head 17. The cylinder barrel 11 and the fixed lug plate 16 are fixed through the sheet metal fixing piece 9, the cylinder barrel 11 is prevented from moving axially and rotating circumferentially, the servomotor cylinder body 3, the seamless steel pipe 18, the pin shaft 7, the left elbow and the oil flow pipeline 13 form a whole, the servomotor cylinder body and the seamless steel pipe swing around the fixed lug plate 16 together with the lower hanging head 17, and the fixed lug plate 16 and the cylinder barrel 11 do not rotate. The cylinder 11 directly is equipped with combined seal 12 with round pin axle 7, and the quantity of combined seal 12 is 4 (each 2 of unilateral), and sealing washer 15 sets up in the both sides of round pin axle 7 with the junction of cylinder 11, prevents the oil leak.

One end of the oil flow channel 13 is respectively connected with an oil pipe of a high-pressure pipeline externally connected with an oil port 8 on the outer side of the cylinder barrel 11, and the other end is connected with a rod cavity of the servomotor cylinder body 3 through a seamless steel pipe 18 and an elbow 14. The servomotor cylinder 3, the seamless steel pipe 18 fixed on the servomotor cylinder 3, the elbow 14 and the pin shaft 7 accessory swing along the fixed lug plate 16, so that pressure oil is conveyed from the fixed pipeline to two cavities of the swing servomotor cylinder 3.

The anti-explosion design scheme for the high-pressure pipeline of the water inlet valve servomotor of the hydroelectric generating set cancels the high-pressure hose, saves the production cost, and arranges the pipelines at two sides of the servomotor, thereby being simple in arrangement and convenient to overhaul.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a novel generating set water intaking valve servomotor which characterized in that includes:

the bottom of the oil cylinder is provided with a lower hanging head (17);

the lower hanging head (17) is hinged with the fixed ear plate (16) through a pin shaft (7);

oil flow channels (13) are respectively formed in two ends of the pin shaft (7), a cylinder barrel (11) is sleeved outside the two ends of the pin shaft (7), and an oil port (8) is formed in the cylinder barrel (11); one end of the oil port (8) is connected with external high-pressure oil, and the other end of the oil port is communicated with the oil flow channel (13);

and oil flow channels (13) at two ends of the pin shaft (7) are connected with a right elbow (6) and a right seamless steel pipe (5) in sequence at one end and connected with a rodless cavity of the oil cylinder, and connected with a left elbow (14) and a left seamless steel pipe (18) in sequence at the other end and connected with a rod cavity of the oil cylinder.

2. The novel generator set inlet valve servomotor as claimed in claim 1, wherein a base (10) is provided at the bottom of the lower hanging head (17).

3. The novel generator set water inlet valve servomotor as claimed in claim 1, wherein the bottom of the cylinder (11) is fixedly connected with the fixed lug plate (16) through a sheet metal fixing member (9).

4. The novel generator set inlet valve servomotor as recited in claim 1, wherein a sealing ring (15) is disposed between the left elbow (14) and the oil flow channel (13).

5. The novel servomotor of the generator set inlet valve as claimed in claim 1, wherein a combined sealing ring (12) is arranged on the combined surface of the cylinder (11) and the pin shaft (7).

6. The novel generator set inlet valve servomotor as recited in claim 5, wherein the number of the combined sealing rings on one side is 2.

7. The novel generator set water inlet valve servomotor as claimed in claim 1, wherein an upper hanging head (1) is arranged at the top of the oil cylinder.