CN215950551U - Valve switch indicating device for steam turbine engine of thermal power plant - Google Patents

Abstract

The utility model discloses a valve switch indicating device of a turbine engine of a thermal power plant, which comprises a fan-shaped disc and a switch assembly arranged on one side of the fan-shaped disc, wherein the top surface of the fan-shaped disc is rotatably connected with a deflector rod assembly, the deflector rod assembly comprises a first deflector rod and a second deflector rod, vertical direction supports are fixedly arranged at the end parts of the first deflector rod and the second deflector rod, the switch assembly comprises a bracket in a shape of Chinese character ji, an opening limiting part and a closing limiting part are respectively arranged at the two ends of the bracket in the shape of Chinese character ji, and the opening limiting part and the closing limiting part are movably arranged on the bracket in the shape of Chinese character ji.

Description

Valve switch indicating device for steam turbine engine of thermal power plant

Technical Field

The utility model relates to the field of valve opening indicating devices, in particular to a valve opening and closing indicating device of a steam turbine engine of a thermal power plant.

Background

The switch indicating device for the steam turbine of the conventional thermal power generating unit is of a fan-shaped shifting rod type structure and is divided into four shifting rods, every two of the four shifting rods correspond to an opening limit and an closing limit respectively, the four shifting rods are in contact with an opening limit crank arm and a closing limit crank arm respectively, and a switch limit node is triggered, so that the valve opening state switching value indication and the signal remote transmission are realized (as shown in fig. 5). In the in-service use in-process, the discovery valve normally opens the phenomenon that the interior driving lever of switch box can't drive the travel switch contact when closing the process, and common problem has: the crank arms for opening or closing limit are in cross contact with each other, and the crank arms are broken when the deflector rod touches the crank arms; the individual shift lever is far away from the limit switch crank arm in the rotating process, so that the limit crank arm is not contacted or the shift lever is separated from the limit switch crank arm in the valve action process, and a valve position switch signal cannot be safely sent out. In addition, because the work of regularly overhauing of power plant often needs to install the adjustment to valve switch indicating device after opening the shut down at every turn, all need carry out readjustment test to each driving lever and spacing turning arm position at every turn, and the valve needs to go on and off the action once and confirms installation angle and turning arm length, and is consuming time longer and adjustment efficiency lower.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a valve switch indicating device of a steam turbine engine of a thermal power plant, which is used for solving the problems in the prior art, avoiding the crank arm fracture phenomenon caused by mutual contact and collision of the crank arms, ensuring that a first driving lever and a second driving lever can touch a limit switch crank arm in the action process, reducing the failure rate and debugging period and improving the stability and the practicability.

In order to achieve the purpose, the utility model provides the following scheme: the utility model provides a valve switch indicating device of a turbine engine of a thermal power plant, which comprises a sector disc and a switch assembly arranged on one side of the sector disc, wherein the top surface of the sector disc is rotatably connected with a deflector rod assembly, the deflector rod assembly comprises a first deflector rod and a second deflector rod, vertical direction supports are fixedly arranged at the end parts of the first deflector rod and the second deflector rod, the switch assembly comprises a bracket in a shape of Chinese character 'ji', an opening limit part and a closing limit part are respectively arranged at the two ends of the bracket in the shape of Chinese character 'ji', the opening limit part and the closing limit part are movably arranged on the bracket in the shape of Chinese character 'ji', the opening limit part comprises two opening limit switches, each opening limit switch is provided with an opening limit crank arm, the two opening limit crank arms are arranged in a vertically corresponding manner, the end parts of the two opening limit crank arms are positioned on the movement track of the bracket in the vertical direction of the second deflector rod, the closing limit part comprises two closing limit switches, the closing limit switch is provided with closing limit crank arms, the two closing limit crank arms are arranged up and down correspondingly, and the end parts of the two closing limit crank arms are positioned on the motion track of the support in the vertical direction of the first driving lever.

Preferably, the bottom of the fan-shaped disc and the bottom of the bracket are provided with bottom plates, the fan-shaped disc is rotatably connected to the top surface of the bottom plate, and the bracket is fixed to the top surface of the bottom plate.

Preferably, the sector disc top surface is fixed with the pivot, first driving lever with the second driving lever respectively with the pivot coupling, the pivot runs through in proper order the sector disc with the bottom plate is fixed with the dwang, the pivot with the bottom plate rotates to be connected, the pivot is kept away from the tip of dwang can be dismantled and be connected with a tight nut in top, a plurality of positioning holes have been seted up on the dwang, the dwang rotates and is connected with the connecting rod, the both ends of connecting rod are equipped with the pin joint respectively, arbitrary the pin joint with the connection can be dismantled in the positioning hole, another the pin joint rotates and is connected with the telescoping cylinder.

Preferably, the surface of the sector disc is symmetrically provided with arc-shaped grooves, the first driving lever and the second driving lever can be detachably connected with sliding blocks, and the sliding blocks are in sliding connection with the arc-shaped grooves.

Preferably, the surface of the sector disc is rotatably connected with a guide post, the guide post is positioned between the first driving lever and the second driving lever, the surface of the first driving lever is rotatably connected with a first guide block, the surface of the second driving lever is rotatably connected with a second guide block, the first guide block is detachably connected with a first threaded rod between the guide posts, and the second guide block is detachably connected with a second threaded rod between the guide posts.

Preferably, the vertical direction support comprises mounting plates, the two mounting plates are fixedly connected with the first driving lever and the second driving lever respectively, the end faces of the mounting plates are in sliding contact with sliding plates, a first sliding groove is formed in the surface of each sliding plate, a plurality of fastening bolts are arranged in the first sliding groove and penetrate through the first sliding groove and are detachably connected with the mounting plates.

Preferably, one side of the sliding plate, which is far away from the mounting plate, is provided with a flat plate, the surface of the sliding plate is fixedly provided with a plurality of sleeves, springs are fixedly arranged in the sleeves, telescopic rods are fixedly connected with the springs in the sleeves, one ends, which are far away from the springs, of the telescopic rods are fixedly connected with the flat plate, the end parts of the open limiting crank arms are located on the motion trail of the flat plate of the second driving lever, and the end parts of the close limiting crank arms are located on the motion trail of the flat plate of the first driving lever.

Preferably, a plurality of second sliding grooves are formed in the n-shaped support, and the opening limit switch and the closing limit switch are connected with the second sliding grooves in a sliding mode.

The utility model discloses the following technical effects: the vertical direction supports are respectively added at the ends of the first driving lever and the second driving lever, the limit connecting lever is turned off in an increasing mode, the limit connecting lever and the first driving lever are turned on, the contact area of the second driving lever is increased, the end portion of the limit connecting lever to be turned off and the end portion of the limit connecting lever to be turned on are located on the motion tracks of the first driving lever and the second driving lever, the limit connecting lever and the limit connecting lever can be turned off and turned on in a contact mode in the action process of the first driving lever and the second driving lever, the four limit switches are lifted by the aid of the n-shaped supports, the two limit connecting levers are turned on and turned off in a vertically corresponding mode, the two limit connecting levers are turned off and correspondingly arranged vertically, the connecting lever fracture phenomenon caused by contact collision of the connecting levers is avoided, when installation and debugging are carried out, only angle adjustment needs to be carried out on the first driving lever and the second driving lever, the workload of installation and debugging is reduced, and the working efficiency is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.

FIG. 1 is a top view of a valve switch indicating device of a steam turbine engine of a thermal power plant according to the present invention;

FIG. 2 is a schematic view of the vertical support in the direction A of FIG. 1;

FIG. 3 is a schematic view of the structure of the sliding plate according to the present invention;

FIG. 4 is a schematic view of a switch assembly according to the present invention;

FIG. 5 is a diagram of a fan-shaped lever-type valve opening indicating device in the prior art;

wherein, 1 is a sector disc; 2 is a first deflector rod; a second deflector rod 3; 4 is a bracket with a shape of a Chinese character 'ji'; 5 is an open limit switch; 6 is an open limit crank arm; 7 is an off limit switch; 8 is a closing limit crank arm; 9 is a bottom plate; 10 is a rotating shaft; 11 is a rotating rod; 12, a jacking nut; 13 is a positioning hole; 14 is a connecting rod; 15 is a telescopic cylinder; 16 is an arc-shaped groove; 17 is a sliding block; 18 is a guide post; 19 is a first guide block; 20 is a second guide block; 21 is a first threaded rod; 22 is a second threaded rod; 23 is a mounting plate; 24 is a sliding plate; 25 is a first chute; 26 is a fastening bolt; 27 is a flat plate; 28 is a sleeve; 29 is a spring; 30 is a telescopic rod; and 31 is a second chute.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

Referring to fig. 1-5, the utility model provides a valve switch indicating device for a steam turbine engine of a thermal power plant, comprising a sector disc 1 and a switch assembly arranged on one side of the sector disc 1, wherein the top surface of the sector disc 1 is rotatably connected with a deflector rod assembly, the deflector rod assembly comprises a first deflector rod 2 and a second deflector rod 3, both the first deflector rod 2 and the second deflector rod 3 can adjust the angle, vertical brackets are fixedly arranged at the end parts of the first deflector rod 2 and the second deflector rod 3 and are used for increasing the contact area between a switch-off limit crank arm 8 and a switch-on limit crank arm 6 and the first deflector rod 2 and the second deflector rod 3, the switch assembly comprises a bracket 4 (the structure of the bracket 4 is shown in fig. 4), the bracket 4 is used for lifting a limit switch, both ends of the bracket 4 are respectively provided with a switch-on limit part and a switch-off limit part, both the switch-on limit part and the bracket 4 can be movably arranged on the bracket 4, the opening limiting part comprises two opening limiting switches 5, the opening limiting switches are provided with opening limiting connecting levers 6, the two opening limiting connecting levers 6 are correspondingly arranged up and down, the end parts of the two opening limiting connecting levers 6 are positioned on the motion track of the vertical direction support of the second driving lever 3, the closing limiting part comprises two closing limiting switches 7, the closing limiting switches 7 are provided with closing limiting connecting levers 8, the two closing limiting connecting levers 8 are correspondingly arranged up and down, the end parts of the two closing limiting connecting levers 8 are positioned on the motion track of the vertical direction support of the first driving lever 2, the four limiting switch connecting levers can adjust the angle, the end parts of the two closing limiting connecting levers 8 and the end parts of the two opening limiting connecting levers 6 are correspondingly positioned on the motion track of the vertical direction support when positioned on the same horizontal line up and down, and the first driving lever 2 and the second driving lever 3 can contact the closing limiting connecting levers 8 and the opening limiting connecting levers 6 when moving.

Further optimization scheme, the bottom of sector plate 1 and several type supports 4 is equipped with bottom plate 9, and sector plate 1 rotates to be connected at the top surface of bottom plate 9, and sector plate 1 can rotate on bottom plate 9, and several type supports 4 are fixed at the top surface of bottom plate 9, are located one side that sector plate 1 vertical direction support can touch limit switch crank arm tip when rotating.

The further optimization scheme is that a rotating shaft 10 is fixed on the top surface of the sector disc 1, a first driving lever 2 and a second driving lever 3 are respectively coupled with the rotating shaft 10, the first driving lever 2 and the second driving lever 3 can rotate on the rotating shaft, the rotating shaft 10 sequentially penetrates through the sector disc 1 and the bottom plate 9 and is fixed with a rotating rod 11, the rotating shaft 10 is rotatably connected with the bottom plate 9, the rotating rod 11 can drive the sector disc 1 to rotate, a jacking nut 12 is detachably connected to the end portion, far away from the rotating rod 11, of the rotating shaft 10 and is used for locking and pressing the first driving lever 2 and the second driving lever 3 on the sector disc 1, it is ensured that when the sector disc 1 rotates, the positions of the first driving lever 2 and the second driving lever 3 on the sector disc 1 cannot change while rotating along with the sector disc 1, a plurality of positioning holes 13 are formed in the rotating rod 11, a connecting rod 14 is rotatably connected with the rotating rod 11, two ends of the connecting rod 14 are respectively provided with a hinge point, and any hinge point is detachably connected with the positioning hole 13, the position of the connecting rod 14 connected with the position adjusting hole 13 can be adjusted according to the rotating amplitude of the sector disc 1, the other hinged point is rotatably connected with a telescopic cylinder 15, and the telescopic cylinder 15 stretches and retracts to drive the device to move.

Further optimization scheme, arc wall 16 has been seted up to sector disc 1 surface symmetry, and first driving lever 2 and second driving lever 3 all can be dismantled and be connected with sliding block 17, and sliding block 17 and arc wall 16 sliding connection adjust the position of sliding block 17 on arc wall 16 and can adjust the direction of first driving lever 2 and second driving lever 3.

In a further optimization scheme, the surface of the sector disc 1 is rotatably connected with a guide post 18, the guide post 18 is positioned between a first deflector rod 2 and a second deflector rod 3, the surface of the first deflector rod 2 is rotatably connected with a first guide block 19, the surface of the second deflector rod 3 is rotatably connected with a second guide block 20, a first threaded rod 21 is detachably connected between the first guide block 19 and the guide post 18, a second threaded rod 22 is detachably connected between the second guide block 20 and the guide post 18, the first threaded rod 21 and the second threaded rod 22 are vertically arranged in the guide post 18, the first guide block 19 can be adjusted while the directions of the first deflector rod 2 and the second deflector rod 3 are adjusted, the orientation of the second guide block 20 and the guide post 18 ensures that the first threaded rod 21 and the second threaded rod 22 can respectively penetrate into the guide post 18 and the first guide block 19 and the second guide block 20, and can further fix the position of the first driving lever 2 and the second driving lever 3.

Further optimize the scheme, the vertical direction support includes mounting panel 23, two mounting panels 23 respectively with first driving lever 2 and 3 fixed connection of second driving lever, the sliding contact of 23 terminal surfaces of mounting panel has sliding plate 24, first spout 25 has been seted up on sliding plate 24 surface, first spout 25 is provided with a plurality of fastening bolt 26, a plurality of fastening bolt 26 runs through first spout 25 and can dismantle with mounting panel 23 and be connected, the height that the adjustable sliding plate 24 of elasticity through twisting fastening bolt 26 is located mounting panel 23.

Further optimization scheme, one side that mounting panel 23 was kept away from to sliding plate 24 is equipped with dull and stereotyped 27, sliding plate 24 fixed surface has a plurality of sleeve 28, sleeve 28 internal fixation has spring 29, spring 29 rigid coupling has telescopic link 30, telescopic link 30 sliding connection is in sleeve 28, the one end and the dull and stereotyped 27 rigid coupling of spring 29 are kept away from to telescopic link 30, when dull and stereotyped 27 contacts spacing turning on limit arm 6 and closing limit arm 8, telescopic link 30 contracts to sleeve 28 internal movement, spring 29 compresses and produces reaction force, guarantee dull and stereotyped 27 and the close contact of spacing arm 6 and closing limit arm 8, the tip of turning on limit arm 6 is located the motion track of the dull and stereotyped 27 of second driving lever 3, the tip of closing limit arm 8 is located the motion track of the dull and stereotyped 27 of first driving lever 2.

According to the further optimized scheme, the plurality of second sliding grooves 31 are formed in the n-shaped support 4, the opening limit switch 5 and the closing limit switch 7 are connected with the second sliding grooves 31 in a sliding mode, and the positions of the opening limit switch 5 and the closing limit switch 7 on the n-shaped support 4 can be adjusted by sliding the opening limit switch 5 and the closing limit switch 7 on the sliding grooves.

The working steps are as follows: firstly, the positions of a first driving lever 2 and a second driving lever 3 and the positions of an opening limit switch 5 and a closing limit switch 7 are adjusted, the end parts of two opening limit crank arms 6 are vertically corresponding, the end parts of two closing limit crank arms 8 are vertically corresponding, the first driving lever 2 and the second driving lever 3 can be ensured to be in contact with the end parts of the opening limit crank arms 6 and the closing limit crank arms 8 in the movement process, when a valve is opened, a connecting rod 14 drives a rotating rod 11 to rotate and simultaneously a sector disc 1 rotates through the movement of a telescopic cylinder 15, when the sector disc 1 rotates, a vertical direction support at the end part of the second driving lever 3 is in contact with the two opening limit switches 5, and similarly, when the valve is closed, a vertical direction support at the end part of the first driving lever 2 is in contact with the two closing limit switches 7 simultaneously.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, 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.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.

Claims (8)

1. The utility model provides a thermal power plant turbine car machine valve switch indicating device, includes sector disc (1) and sets up the switch module of sector disc (1) one side, sector disc (1) top surface rotates and is connected with driving lever subassembly, its characterized in that: the shifting lever component comprises a first shifting lever (2) and a second shifting lever (3), vertical direction supports are fixedly installed at the end portions of the first shifting lever (2) and the second shifting lever (3), the switch component comprises a plurality of types of supports (4), an opening limiting portion and a closing limiting portion are respectively arranged at the two ends of each type of support (4), the opening limiting portion and the closing limiting portion are movably arranged on the plurality of types of supports (4), the opening limiting portion comprises two opening limiting switches (5), each opening limiting switch is provided with an opening limiting crank (6), the two opening limiting cranks (6) are vertically and correspondingly arranged, the end portions of the two opening limiting cranks (6) are located on the motion track of the vertical direction supports of the second shifting lever (3), the closing limiting portion comprises two closing limiting switches (7), and each closing limiting switch (7) is provided with a closing limiting crank (8), the two closing limit crank arms (8) are arranged up and down correspondingly, and the end parts of the two closing limit crank arms (8) are positioned on the motion trail of the bracket in the vertical direction of the first shift lever (2).

2. The valve switch indicating device of the steam turbine engine of the thermal power plant as claimed in claim 1, wherein: the bottom of fan-shaped dish (1) with several type support (4) is equipped with bottom plate (9), fan-shaped dish (1) rotates to be connected the top surface of bottom plate (9), several type support (4) are fixed the top surface of bottom plate (9).

3. The valve switch indicating device of the steam turbine engine of the thermal power plant as claimed in claim 2, wherein: sector plate (1) top surface is fixed with pivot (10), first driving lever (2) with second driving lever (3) respectively with pivot (10) coupling, pivot (10) run through in proper order sector plate (1) with bottom plate (9) are fixed with dwang (11), pivot (10) with bottom plate (9) are rotated and are connected, pivot (10) are kept away from the tip of dwang (11) can be dismantled and be connected with top lock nut (12), a plurality of positioning holes (13) have been seted up on dwang (11), dwang (11) are rotated and are connected with connecting rod (14), the both ends of connecting rod (14) are equipped with the pin joint respectively, arbitrary the pin joint with positioning hole (13) can be dismantled and be connected, another the pin joint rotates and is connected with telescoping cylinder (15).

4. The valve switch indicating device of the steam turbine engine of the thermal power plant as claimed in claim 1, wherein: arc-shaped grooves (16) are symmetrically formed in the surface of the sector disc (1), the first driving lever (2) and the second driving lever (3) are detachably connected with sliding blocks (17), and the sliding blocks (17) are in sliding connection with the arc-shaped grooves (16).

5. The valve switch indicating device of the steam turbine engine of the thermal power plant as claimed in claim 1, wherein: fan-shaped dish (1) surface rotates and is connected with guide post (18), guide post (18) are located first driving lever (2) with between second driving lever (3), first driving lever (2) surface rotates and is connected with first guide block (19), second driving lever (3) surface rotates and is connected with second guide block (20), first guide block (19) with can dismantle between guide post (18) and be connected with first threaded rod (21), second guide block (20) with can dismantle between guide post (18) and be connected with second threaded rod (22).

6. The valve switch indicating device of the steam turbine engine of the thermal power plant as claimed in claim 1, wherein: the vertical direction support comprises mounting plates (23), the two mounting plates (23) are respectively fixedly connected with the first driving lever (2) and the second driving lever (3), sliding plates (24) are in sliding contact with the end faces of the mounting plates (23), first sliding grooves (25) are formed in the surfaces of the sliding plates (24), a plurality of fastening bolts (26) are arranged on the first sliding grooves (25), and the fastening bolts (26) penetrate through the first sliding grooves (25) and are detachably connected with the mounting plates (23).

7. The valve switch indicating device of the steam turbine engine of the thermal power plant as claimed in claim 6, wherein: one side of the sliding plate (24) far away from the mounting plate (23) is provided with a flat plate (27), the surface of the sliding plate (24) is fixedly provided with a plurality of sleeves (28), springs (29) are fixedly arranged in the sleeves (28), telescopic rods (30) are fixedly connected with telescopic rods (30), the telescopic rods (30) are slidably connected in the sleeves (28), one ends of the telescopic rods (30) far away from the springs (29) are fixedly connected with the flat plate (27), the end part of the opening limiting crank arm (6) is located on the motion track of the flat plate (27) of the second shifting lever (3), and the end part of the closing limiting crank arm (8) is located on the motion track of the flat plate (27) of the first shifting lever (2).

8. The valve switch indicating device of the steam turbine engine of the thermal power plant as claimed in claim 1, wherein: a plurality of second sliding grooves (31) are formed in the n-shaped support (4), and the opening limit switch (5) and the closing limit switch (7) are connected with the second sliding grooves (31) in a sliding mode.

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