Automatic main throttle valve dismounting device for small unit

Abstract

The utility model discloses an automatic main valve dismounting device for a small unit, which belongs to the technical field of main valves and comprises a connecting flange connected with a valve core of the main valve, a plurality of first fixing holes are uniformly formed in an inner ring of the connecting flange, a connecting sleeve is coaxially and detachably connected to one side of the connecting flange, and a plurality of second fixing holes are uniformly formed in the other side of the connecting sleeve. The end, connected with the connecting flange, of the connecting sleeve is provided with a plurality of second fixing holes in one-to-one correspondence with the first fixing holes, and baffles perpendicular to the connecting sleeve are arranged on the left side and the right side of the connecting sleeve. By means of the first fixing hole and the second fixing hole, the purpose that the connecting sleeve and the connecting flange are detachably connected can be achieved, and therefore on the premise that one connecting sleeve is used, different types of connecting flanges matched with main valve cores of different sizes can be replaced according to the main valve cores of different sizes; by applying force towards the outside of the main valve to the baffle, the purpose of detaching the main valve element from the main valve body can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of main steam valve, specifically relates to a small unit dismounting automatic main steam valve device. BACKGROUND

[0002] Automatic main steam valve is the main closing mechanism between steam pipe network and steam turbine, and is an executing device of steam turbine protection system, can immediately cut off steam turbine admission and make steam turbine stop running after unit protection action, therefore, it is the executing element of protection device and belongs to quick closing door, and the requirements are that first, action is reliable and rapid, and usually, the closing time is no more than 0.5 seconds, and second, tightness is good, and after closing, the rotating speed of steam turbine should be below 1000 revolutions per minute.

[0003] Automatic main steam valve is usually composed of main steam valve control seat and main steam valve body, and there are oil cylinder and electromagnetic valve on the control seat, the electromagnetic valve is electrified to charge oil to the oil cylinder when the unit starts, the valve rod connected mechanically drives valve disc to open the main steam valve, and steam passes through the main steam valve and enters the steam turbine to do work through the speed regulating valve.When the main steam valve of the horizontally arranged steam turbine is overhauled, after the main steam valve control seat is dismounted, the main steam valve is horizontally arranged as a whole, so the main steam valve core cannot be directly hoisted upwards, thereby leading to that the dismounting of the main steam valve core is very difficult. UTILITY MODEL CONTENT

[0004] In order to solve the problem that the main steam valve arranged horizontally cannot directly hoist the main steam valve core upwards during dismounting, the utility model provides a small unit dismounting automatic main steam valve device, which can conveniently pull out or eject the main steam valve core arranged horizontally from the main steam valve body, thereby facilitating the dismounting of the main steam valve core.

[0005] The utility model discloses a small unit dismounting automatic main steam valve device adopts the technical scheme that:

[0006] A small unit dismounting automatic main steam valve device, which comprises a connecting flange connected with the main steam valve core, a plurality of first fixing holes are uniformly arranged in the inner ring of the connecting flange, a connecting sleeve is detachably connected with the side of the connecting flange in a coaxial mode, a plurality of second fixing holes corresponding to the plurality of first fixing holes are arranged in the end of the connecting sleeve connected with the connecting flange, and the left and right sides of the connecting sleeve are provided with baffles perpendicular to the connecting sleeve.

[0007] The utility model technical scheme is further improved in that the outer ring of the connecting flange is uniformly provided with a plurality of connecting holes, and the plurality of connecting holes are located on the outer side of the connecting sleeve.

[0008] The further improvement in the technical scheme of the utility model lies in that: a plurality of grooves corresponding to the plurality of first fixing holes are formed on the side of the connecting flange away from the connecting sleeve, and each groove is coaxially arranged with the corresponding first fixing hole and forms a stepped hole.

[0009] The further improvement in the technical scheme of the utility model lies in that: the end of each baffle away from the connecting sleeve along the radial projection direction of the connecting flange is located outside the connecting flange.

[0010] The further improvement in the technical scheme of the utility model lies in that: a through hole with a diameter less than or equal to the inner diameter of the connecting sleeve is formed in the center of the connecting flange.

[0011] The further improvement in the technical scheme of the utility model lies in that: a handle is arranged at the end of the connecting sleeve away from the connecting flange, and an anti-skid layer is arranged on the outer wall of the handle.

[0012] The further improvement in the technical scheme of the utility model lies in that: the handle is connected to the end of the connecting sleeve away from the connecting flange through a connecting plate.

[0013] Due to the adoption of the above technical scheme, the technical progress achieved by the utility model includes:

[0014] In the utility model, the connecting flange is arranged to connect the utility model with the main steam valve core; the first fixing hole and the second fixing hole are arranged to realize the detachable connection between the connecting sleeve and the connecting flange, so that different types of connecting flanges matched with the main steam valve core can be replaced under the premise of using one connecting sleeve according to the different sizes of the main steam valve core; in the utility model, the force applied to the baffle towards the outside of the main steam valve can drive the utility model to move towards the outside of the main steam valve, so that the main steam valve core can be disassembled from the main steam valve body.

[0015] In the utility model, the connecting hole is arranged on the connecting flange, so that the connecting flange and the main steam valve core can be conveniently connected together through bolts.

[0016] When the connecting flange and the connecting sleeve are connected together through bolts, the screw head of the bolt can be hidden in the groove, so that the screw head is prevented from protruding outward from the connecting flange, which causes the connecting flange to be unable to be attached together with the main steam valve core; when the connecting flange is unable to be attached together with the main steam valve core, longer bolts are needed to connect the connecting flange and the main steam valve core together, and the longer bolts result in heavier weight, thereby being inconvenient to carry.

[0017] In the utility model, the end of the baffle away from the connecting sleeve along the radial projection direction of the connecting flange is located outside the connecting flange, so that the jack can be conveniently placed between the baffle and the main steam valve base when the jack is used for disassembly.

[0018] The utility model discloses a center of connecting flange is provided with the through -hole of the diameter less than or equal to the inner diameter of connecting sleeve, thereby make the weight of the utility model whole reduce, convenient to carry.

[0019] The utility model discloses a handle bar can be conveniently held and moved by the staff, and the anti -skid layer can prevent slipping when the staff holds the handle bar.

[0020] The utility model discloses a connecting plate can make handle bar and connecting sleeve connect more firm. DRAWINGS

[0021] Fig. 1 It is a structure schematic diagram of the automatic main steam door device of small -size unit dismounting of the utility model;

[0022] Fig. 2 It is the structure schematic diagram of another side of the automatic main steam door device of small -size unit dismounting of the utility model;

[0023] Fig. 3 It is the explosion structure schematic diagram of the automatic main steam door device of small -size unit dismounting of the utility model.

[0024] In the drawings, 1, connecting flange;11, first fixed hole;12, connecting hole;13, recess;14, through -hole;

[0025] 2, connecting sleeve;21, second fixed hole;22, baffle;

[0026] 3, handle bar;31, connecting plate. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantage of the utility model more clear and obvious, the utility model is explained in further detail below, and reference is made to the drawings. In the following description, the description of known structure and technology is omitted to avoid unnecessary confusion of the concept of the utility model.

[0028] Reference Figs. 1-3 It can be known that the utility model includes the connecting flange 1 connected with the main steam valve core, the through -hole 14 is arranged in the center of the connecting flange 1, and a plurality of connecting holes 12 are evenly arranged on the outer edge position of the connecting flange 1, when the utility model is connected with the main steam valve core, the connecting flange 1 is attached with the main steam valve core, and the connecting hole 12 on the connecting flange 1 is communicated with the threaded hole of the main steam valve core one by one, then the bolt is screwed into the communicated connecting hole 12 and threaded hole, so that the utility model is connected with the main steam valve core.

[0029] The connecting sleeve 2 is detachably connected to one side of the connecting flange 1, the diameter of the through hole 14 of the connecting flange 1 is less than or equal to the inner diameter of the connecting sleeve 2, a plurality of second fixing holes 21 are formed in the end of the connecting sleeve 2 connected to the connecting flange 1, the inner wall of each second fixing hole 21 is provided with internal threads, the connecting flange 1 is provided with a first fixing hole 11 corresponding to each second fixing hole 21, the connecting flange 1 is provided with a plurality of recesses 13 corresponding to the first fixing holes 11, the diameter of each recess 13 is greater than that of the corresponding first fixing hole 11, and each recess 13 is coaxially arranged with the corresponding first fixing hole 11 to form a stepped hole.

[0030] In the utility model, the plurality of connecting holes 12 are located outside the connecting sleeve 2 when projecting the connecting flange 1 from the end of the connecting sleeve 2 away from the connecting flange 1.

[0031] In the utility model, the left and right sides of the connecting sleeve 2 are fixedly connected with baffles 22 perpendicular to the length direction of the connecting sleeve 2, the baffle 22 is connected with the connecting sleeve 2 by welding or bolt connection, and the end of each baffle 22 away from the connecting sleeve 2 is located outside the connecting flange 1 along the radial projection direction of the connecting flange 1, that is, the baffle 22 is located outside the outer edge of the connecting flange 1 when projecting the connecting flange 1 from the end of the connecting sleeve 2 away from the connecting flange 1.

[0032] In the utility model, the end of the connecting sleeve 2 away from the connecting flange 1 is fixedly connected with a handle 3 through a connecting plate 31, the length direction of the handle 3 is parallel to the axis direction of the connecting sleeve 2, and the outer wall of the handle 3 is provided with an anti-skid layer (not shown in the figure), such as anti-skid threads or an anti-skid sleeve.

[0033] The working principle of the small-sized unit dismounting automatic main steam valve device is as follows:

[0034] First according to the need disassembled main steam valve spool select the appropriate type of connecting flange 1, then the connecting flange 1 selected with the connecting sleeve 2 connected together, and by holding the grip lever 3 the utility model is moved to the main steam valve, then the connecting flange 1 and main steam valve spool connected together, then the main steam valve both sides corresponding to the position of the baffle 22 placed jack, and the ends of the jack are respectively with the main steam valve base and the corresponding baffle 22 are attached, by making the jack extend, thereby driving the utility model and the main steam valve spool to the outside of the main steam valve direction, to the purpose of facilitating the disassembly of the main steam valve spool.

[0035] At the same time also can be pulled to the outside of the main steam valve direction baffle 22, also can make the utility model and the main steam valve spool to the outside of the main steam valve direction, thereby achieving the purpose of facilitating the disassembly of the main steam valve spool.

[0036] In the above embodiment, the utility model provides a kind of small unit disassembly automatic main steam valve device, the utility model in the present application can be connected with the main steam valve spool by the connecting flange being set;By being set first fixed hole and second fixed hole, the purpose of detachable connection of connecting sleeve and connecting flange can be realized, so that under the premise of using one connecting sleeve, different sizes of main steam valve spool are replaced with different types of connecting flanges matched with main steam valve spool;The utility model in the present application can drive the utility model to the direction outside the main steam valve by applying force to the baffle towards the outside of the main steam valve, thereby disassembling the main steam valve spool in the main steam valve body.

[0037] The above-described embodiments are merely preferred embodiments of the utility model, and do not limit the concept and scope of the utility model. Without departing from the design concept of the utility model, various modifications and improvements to the technical solutions of the utility model made by those skilled in the art shall fall within the protection scope of the utility model, and the technical content claimed by the utility model has been fully recorded in the claims.

Claims

1. A small unit disassembly automatic main steam valve device, characterized in that: Including the connecting flange (1) that is connected with the main steam valve core, and the inner circle of connecting flane (1) is evenly provided with a plurality of first fixed hole (11), one side of connecting flane (1) coaxially detachably connected with connecting sleeve (2), connecting sleeve (2) and connecting flane (1) the end connected with a plurality of second fixed hole (21) corresponding to a plurality of first fixed hole (11) is provided, and the left and right sides of connecting sleeve (2) are all provided with the baffle (22) perpendicular to itself.

2. The automatic master extraction valve device for small unit according to claim 1, characterized in that: The outer circle of the connecting flange (1) is uniformly provided with a plurality of connecting holes (12), and the plurality of connecting holes (12) are located on the outer side of the connecting sleeve (2).

3. The automatic master extraction valve device for small unit according to claim 1, characterized in that: The side of the connecting flange (1) away from the connecting sleeve (2) is provided with a plurality of grooves (13) corresponding to the plurality of first fixed holes (11), each groove (13) is coaxially arranged with the corresponding first fixed hole (11) and forms a stepped hole.

4. The automatic master extraction valve device for small unit according to claim 1, characterized in that: The end of each baffle (22) away from the connecting sleeve (2) is located on the outer side of the connecting flange (1) along the radial projection direction of the connecting flange (1).

5. The automatic master extraction valve device for small unit according to claim 1, characterized in that: The center of the connecting flange (1) is provided with a through hole (14) with a diameter less than or equal to the inner diameter of the connecting sleeve (2).

6. The automatic master extraction valve device for small unit according to any one of claims 1-5, characterized in that: The end of the connecting sleeve (2) away from the connecting flange (1) is provided with a handle (3), and the outer wall of the handle (3) is provided with an anti-skid layer.

7. The automatic master extraction valve device for small unit according to claim 6, characterized in that: The handle (3) is connected to the end of the connecting sleeve (2) away from the connecting flange (1) through a connecting plate (31).

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