CN210033701U

CN210033701U - Slow-opening protection device for hydroelectric generating set flow passage entrance door

Info

Publication number: CN210033701U
Application number: CN201920794814.5U
Authority: CN
Inventors: 陈立; 李芳同; 邓琴
Original assignee: Chongqing Datang International Wulong Hydropower Development Co Ltd
Current assignee: Chongqing Datang International Wulong Hydropower Development Co Ltd
Priority date: 2019-05-29
Filing date: 2019-05-29
Publication date: 2020-02-07
Anticipated expiration: 2029-05-29

Abstract

The utility model relates to the field of opening a hydroelectric generating set runner entrance door, in particular to a slow-opening protection device for a hydroelectric generating set runner entrance door, which comprises an entrance door and a door seat; the people entering door sets up on the doorseat with the mode that can rotate, still includes: the bolt plate, the adjusting bolt and the L-shaped support plate; one end of the bolt plate is rotatably connected with the entrance door, and the other end of the bolt plate is provided with a through hole; a first adjusting hole corresponding to the through hole is formed in the door seat, the first adjusting hole is a threaded hole, and a non-threaded third adjusting hole is formed in the support plate; the adjusting bolt penetrates through the through hole of the bolt plate and then is connected with the first adjusting hole. Through the protection device that slowly opens that this application provided, under the condition that the runner water pressure measurement sensor broke down and test the water valve and block up, can effectual prevention cause the condition that the people's of entering that has relieved fixing bolt was suddenly washed away by water pressure because of there being undefined water pressure in the runner, has further ensured staff's personal safety.

Description

Slow-opening protection device for hydroelectric generating set flow passage entrance door

Technical Field

The utility model relates to a hydroelectric generating set runner entry door opens the field, concretely relates to slowly open protector for hydroelectric generating set runner entry door.

Background

In a hydroelectric power plant, a man-in door of a flow channel of a hydroelectric generating set is in a fully closed state in a non-overhaul period and is fixed by using a bolt, and a maintainer needs to enter the flow channel to carry out routine inspection in a dry water overhaul period. The existing hydroelectric generating set runner entrance door needs to verify whether water in the runner is emptied or not through a runner pressure sensor and a water check valve at the entrance door before being opened, and if the water is emptied, a bolt between the entrance door and a door seat can be removed to open the entrance door. However, in daily operation, frequent fluctuation of the flow state of the water in the flow channel easily causes the pressure sensor to be vibrated and to break down, and in addition, the water flow in the flow channel carries more impurities, so that the water testing valve can be blocked, and under the condition that the pressure sensor breaks down and the water testing valve is blocked, the phenomenon that the water in the flow channel of the hydroelectric generating set is emptied can be caused. If the staff directly opens the door, the door may be knocked open due to the excessive water pressure in the flow channel, and personal injury may be caused.

Disclosure of Invention

The utility model discloses to the pressure sensor in the present hydroelectric generating set runner break down and test the jam of water valve and can cause the illusion of hydroelectric generating set runner water evacuation, the staff directly opens into the problem that has probably caused injury or even drowned accident to the staff because water pressure is too big behind the people's door, provides a slowly open protector that is used for hydroelectric generating set runner to advance people's door.

In order to achieve the above purpose, the invention provides the following technical scheme:

a slowly-opening protection device for a hydroelectric generating set runner entrance door comprises an entrance door and a door seat; the people entering door sets up on the doorseat with the mode that can rotate, still includes: the bolt plate, the adjusting bolt and the L-shaped support plate; the support plate is fixedly connected with the door seat; one end of the bolt plate is rotatably connected with the entrance door, and the other end of the bolt plate is provided with a through hole; a first adjusting hole corresponding to the through hole is formed in the door seat, the first adjusting hole is a threaded hole, and a third adjusting hole is formed in the vertical side of the support plate; the third adjusting hole is a non-threaded hole; the adjusting bolt penetrates through the support plate and the bolt plate in sequence and then is in threaded fit with the first adjusting hole.

Preferably, the bolt plate is rotatably connected with the entrance door through a rotating assembly; the rotating assembly includes: a connecting shaft and a locking nut; one end of the connecting shaft is fixedly connected with the entrance door, and the other end of the connecting shaft is provided with threads; the bolt plate is provided with a through hole, sleeved on the connecting shaft through the through hole and locked by the locking nut.

Preferably, the door seat is provided with a connecting plate, the connecting plate is provided with a second adjusting hole, the second adjusting hole is a threaded hole, and the second adjusting hole corresponds to the through hole and the first adjusting hole. The thickness of current gate seat is not enough, increases the connecting plate on the gate seat to increase the thickness of gate seat, and then increased the degree of depth of screw thread through-hole, increased adjusting bolt's mobile regulation stroke.

Preferably, a handle is arranged on the adjusting bolt. The handle is welded with the bolt head of the bolt, the handle can be an adjusting rod or a circular ring, and the adjusting bolt can be screwed out directly by hand without special tools.

Compared with the prior art, the invention has the beneficial effects that: the application provides a slowly open protector, after the fixing bolt between screw-on people's door and the gate seat, still there is the flitch to restrict people's door, can not directly break away people's personal injury that causes because of water pressure is too big with people's door. In the process of opening the people entering door, slowly outwards screw out the certain stroke of adjusting bolt to slowly stimulate the people entering door to the maximum aperture that adjusting bolt restricted, if have obvious, continuous rivers to flow out then stop to unscrew adjusting bolt, so that the staff in time keeps away from danger and avoids bodily injury. If no abnormal water flow flows out, the water flow channel is in a safe state, the bolt is completely unscrewed, so that the adjusting bolt is completely separated from the first adjusting hole and the second adjusting hole, and the entrance door is opened. The secondary bolt of the L-shaped support plate is used for blocking, so that the injury to workers in the process of opening the bolt is further prevented. Through the protection device that slowly opens that this application provided, under pressure sensor breaks down and the condition that the water check valve blockked up, the occurence of failure that can effectual prevention was crossed big rush to open into the people's door because of the water pressure in the runner has further ensured staff's personal safety.

Description of the drawings:

fig. 1 is a front view of a slowly opening protection device for a flow passage entrance door of a hydroelectric generating set according to the present application;

FIG. 2 is a schematic view of the opened latch plate of FIG. 1;

FIG. 3 is a cross-sectional view of the peg board being secured;

fig. 4 is a schematic structural view of the peg board of fig. 1.

The labels in the figure are: 1-bolt plate, 2-connecting plate, 3-adjusting bolt, 31-handle, 4-entrance door, 5-door seat, 6-through hole, 7-connecting shaft and 8-locking nut; 9-support plate.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

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, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, a communication between two elements, a direct connection, or an indirect connection via an intermediate medium, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.

As shown in fig. 1 and fig. 2, the present embodiment discloses a slow-opening protection device for a gate of a flow channel of a hydroelectric generating set, which includes a gate 4, a gate seat 5, a bolt plate 1 and an adjusting bolt 3; an L-shaped support plate 9 is welded on the door seat 5, and the support plate 9 is fixedly connected with the door seat 5; and a third adjusting hole is arranged on the vertical side of the support plate 9 and is a non-threaded through hole. The door seat 5 is rotatably arranged on the entrance door 4, one end of the bolt plate 1 is rotatably connected with the entrance door 4, and the other end of the bolt plate 1 is provided with a through hole 6; the door seat 5 is provided with a first adjusting hole corresponding to the through hole 6, the first adjusting hole is a threaded hole, and the adjusting bolt 3 sequentially penetrates through the support plate 9 and the bolt plate 1 and then is in threaded connection with the first adjusting hole. The doorseat 5 is fixedly connected with the connecting plate 2 through bolts or welding modes, the thickness of the doorseat 5 is increased through the connecting plate 2, and therefore the adjustable opening stroke of the door bolt is increased. And a second adjusting hole is formed in the connecting plate 2 and is a threaded hole. Through-hole 6 on the tie plate 1 is the non-threaded hole, and this kind of mode can guarantee to be in screwing adjusting bolt out the doorseat in-process, is movable between tie plate and the adjusting bolt, can not open the in-process because of the people's entrance, causes adjusting bolt to receive the influence of tie plate radial force. The connecting plate 2 is welded with the L-shaped support plate 9, and can also be integrally formed. A radial bearing can be arranged between the adjusting bolt 3 and the bolt plate 1 to prevent the adjusting bolt 3 and the bolt plate 1 from being screwed too tightly. The adjusting bolt 3 is provided with a handle 31. The handle 31 is welded with the bolt head of the adjusting bolt, the handle 31 can be an adjusting rod or a circular ring, and the adjusting bolt can be directly screwed out by hand without using tools.

The bolt plate 1 is rotationally connected with the people entrance door 4 through a rotating assembly; the rotating assembly comprises a connecting shaft 7 and a locking nut 8; one end of the connecting shaft 7 is fixedly connected with the entrance door 4, and the other end of the connecting shaft 7 is provided with threads; the bolt plate 1 is sleeved outside the connecting shaft 7 and is locked by the locking nut 8. The working process is as follows: the top, the below, the left, the right-hand bolt that all are connected with door seat 5 of entering people's door 4, and the right-hand articulated mode that passes through of entering people's door 4 is connected with door seat 5 rotation. As shown in fig. 1, the bolt plate 1 is fixed on the door seat 5 through the adjusting bolt 3; when the entrance door 4 is opened, the bolt between the entrance door 4 and the door seat 5 is firstly released, then the adjusting bolt 3 is unscrewed outwards for a certain stroke, the entrance door 4 is pulled to the maximum opening limited by the adjusting bolt 3, and a gap with a certain opening is formed between the entrance door 4 and the door seat 5. If a large amount of water which is not emptied exists in the flow channel, the water can continuously flow out, but the bolt plate 1 is locked on the door seat 5 by the adjusting bolt 3, so that the entrance door 4 cannot be knocked open by the water in the flow channel, and the accidental injury of people who are knocked by the entrance door 4 is avoided; if no water flows in the gap between the entrance door 4 and the door seat 5, the adjusting bolt 3 can be completely screwed out, and then the entrance door 4 is completely opened. The bolt plate 1 can be blocked by the L-shaped support plate 9, so that the bolt plate is prevented from causing accidental injury to workers after the adjusting bolt 3 is completely screwed out; after the adjusting bolts 3 are completely screwed out, the people entering door 4 can be opened after the bolt plate 1 is rotated.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A slow-opening protection device for a hydroelectric generating set runner entrance door comprises an entrance door (4) and a door seat (5); people's door (4) set up on door seat (5) with the mode that can articulate and rotate, its characterized in that still includes: the bolt plate (1), the adjusting bolt (3) and the L-shaped support plate (9); the support plate (9) is fixedly connected with the door seat (5); one end of the bolt plate (1) is rotatably connected with the entrance door (4), and the other end of the bolt plate (1) is provided with a through hole (6); a first adjusting hole corresponding to the through hole (6) is formed in the door seat (5), the first adjusting hole is a threaded hole, and a third adjusting hole is formed in the vertical side of the support plate (9); the third adjusting hole is a non-threaded hole; the adjusting bolt (3) penetrates through the support plate (9) and the bolt plate (1) in sequence and then is in threaded fit with the first adjusting hole.

2. The slow-release protection device for the hydroelectric generating set runner entrance door according to claim 1, wherein the bolt plate (1) is rotatably connected with the entrance door (4) through a rotating component; the rotating assembly comprises a connecting shaft (7) and a locking nut (8); one end of the connecting shaft (7) is fixedly connected with the entrance door (4), and the other end of the connecting shaft (7) is provided with threads; the bolt plate (1) is sleeved outside the connecting shaft (7) and is locked by the locking nut (8).

3. The slow-opening protection device for the gate of the hydroelectric generating set flow channel entrance according to claim 1, wherein the gate seat (5) is provided with a connecting plate (2), the connecting plate (2) is provided with a second adjusting hole, the second adjusting hole is a threaded hole, and the second adjusting hole corresponds to the through hole (6) and the first adjusting hole.

4. The slow-opening protection device for a flow channel entrance door of a hydroelectric generating set according to claim 1, wherein the adjusting bolt (3) is provided with a handle (31).