Safety opening and closing device for turbine inlet gate

Abstract

The application discloses a safety opening and closing device for a water turbine inlet door, which comprises a bearing assembly and a moving assembly. The bearing assembly comprises a base, a supporting piece arranged in the base, reinforcing pieces arranged at the bottom and one side of the supporting piece, and a locking piece arranged at the side of the base. The moving assembly comprises an adjusting piece arranged at the bottom of the base and universal wheels arranged at the bottom of the adjusting piece. The bearing assembly and the moving assembly are arranged to minimize the operation difficulty of workers when the water turbine inlet door is opened and closed, and the device is easy to disassemble and can be applied to water turbine inlet doors of different sizes.

Description

Technical Field

[0001] This invention relates to the field of water turbine equipment technology, and in particular to a safety opening and closing device for the entrance door of a water turbine unit. Background Technology

[0002] The turbine inlet doors (including the tailrace inlet door and the spiral casing inlet door) serve as the gateways into the turbine. Opening these doors is the first crucial step after each unit overhaul and drainage, while closing them is the final step before filling the turbine with water. Therefore, ensuring the proper opening and closing of these doors is paramount. The inlet doors are connected to the turbine unit via hinges. The internal components of the hinges have a clearance fit, which can lead to welding deformation during installation. Furthermore, the turbine experiences significant vibrations during operation, and the inlet doors are relatively heavy (the tailrace inlet door weighs 1390 kg, and the spiral casing inlet door weighs 626 kg). The hinges also bear considerable force after being opened for maintenance, which can cause deformation at the hinge points.

[0003] Under normal circumstances, the gap between the entrance door and the door frame is 10mm after the entrance door is closed. Problems exist: After removing all screws, the entrance door falls onto the door frame, preventing it from opening properly; during reinstallation, it also cannot close properly, requiring manual labor or tools to lift it a short distance to close it; if the hinges break during opening and closing, causing the entrance door to fall to the ground, it will affect the maintenance schedule and could cause injury or death. Therefore, a device is designed to ensure the normal opening and reinstallation of the entrance door while preventing it from falling off the door frame, thus ensuring both schedule and safety. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problems existing in the above and / or existing safety opening and closing devices for turbine unit entrance doors, the present invention is proposed.

[0006] Therefore, the problem that this invention aims to solve is that opening and closing the turbine access gate is time-consuming, labor-intensive, and poses safety hazards.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a safety opening and closing device for a turbine unit entrance door, comprising: a supporting component including a base, a support member disposed inside the base, a reinforcing member disposed at the bottom and one side of the support member, and a locking member disposed on the side of the base; and a moving component including an adjusting member disposed at the bottom of the base, and a caster wheel disposed at the bottom of the adjusting member.

[0008] As a preferred embodiment of the turbine unit access door safety opening and closing device of the present invention, the base is in the form of a stepped shape with one side lower and the other side higher. A sliding groove is provided in the lower side and an arc-shaped groove is provided in the higher side. Limiting grooves are also symmetrically provided on both sides of the sliding groove.

[0009] As a preferred embodiment of the turbine unit access door safety opening and closing device of the present invention, the support member includes a first support block and a second support block disposed in the slide groove. Limiting blocks are symmetrically arranged on both sides of the first support block and the second support block. The limiting blocks cooperate with the limiting groove. The first support block and the second support block are both slidably engaged with the slide groove.

[0010] As a preferred embodiment of the turbine unit access door safety opening and closing device of the present invention, the support member further includes a first toothed plate disposed at the bottom of the first support block and a second toothed plate disposed at the bottom of the second support block.

[0011] As a preferred embodiment of the turbine unit access door safety opening and closing device of the present invention, a gear is further provided between the first toothed plate and the second toothed plate, the gear is rotatably engaged with the inner wall of the base, the first toothed plate and the second toothed plate respectively mesh with the gear, and a first wedge-shaped surface is further provided at the bottom of the second toothed plate.

[0012] As a preferred embodiment of the turbine unit access door safety opening and closing device of the present invention, the reinforcement includes a trapezoidal plate disposed at the bottom of the second toothed plate, a vertical strip plate disposed on one side of the trapezoidal plate, and a pressure block disposed on the top side of the vertical strip plate.

[0013] As a preferred embodiment of the turbine unit access door safety opening and closing device of the present invention, wherein: the trapezoidal plate is further provided with a second wedge surface at both ends, wherein the second wedge surface at one end is slidably engaged with the first wedge surface; the vertical bar is provided with a third wedge surface at both ends, wherein the third wedge surface at one end is slidably engaged with the second wedge surface at the other end of the trapezoidal plate; the pressure block is provided with a fourth wedge surface at its end, wherein the fourth wedge surface is slidably engaged with the third wedge surface at the other end of the vertical bar.

[0014] As a preferred embodiment of the turbine unit access door safety opening and closing device of the present invention, the locking member includes a first sliding block disposed in the arc-shaped groove, the first sliding block being slidably engaged with the arc-shaped groove.

[0015] As a preferred embodiment of the turbine unit access door safety opening and closing device of the present invention, the locking member further includes a second sliding block disposed inside the first sliding block, and a bolt disposed inside the second sliding block. The second sliding block is slidably engaged with the first sliding block, and the bolt is threadedly engaged with the second sliding block.

[0016] As a preferred embodiment of the turbine unit access door safety opening and closing device of the present invention, the adjusting component includes a right-hand screw disposed at the bottom of the base, a left-hand screw disposed at the bottom of the right-hand screw, the right-hand screw and the left-hand screw being connected by a threaded cylinder, and the bottom of the left-hand screw being fixedly connected to the universal wheel.

[0017] The beneficial effects of this invention are as follows: By setting up the supporting component and the moving component, this invention can minimize the difficulty of operation for workers when opening and closing the entrance door of the water turbine, and it is easy to disassemble and assemble to be applicable to entrance doors of different sizes. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0019] Figure 1 This is an application scenario diagram of the safety opening and closing device for the entrance door of a water turbine unit.

[0020] Figure 2 This is an overall structural diagram of the safety opening and closing device for the entrance door of the water turbine unit.

[0021] Figure 3 This is a partial exploded view of the safety opening and closing device for the entrance door of the water turbine unit.

[0022] Figure 4 This is a diagram showing the base and internal structure of the safety opening and closing device for the entrance door of the water turbine unit.

[0023] Figure 5 This is a sectional view of the base of the safety opening and closing device for the turbine unit's entrance door.

[0024] Figure 6 for Figure 5 A magnified view of a portion of point A in the middle.

[0025] Figure 7 A schematic diagram of the internal reinforcement components of the base for the safety opening and closing device of the turbine unit's access door.

[0026] Figure 8 A schematic diagram showing the fit between the reinforcement components of the safety opening and closing device for the turbine unit's access door.

[0027] Figure 9 A schematic diagram of the first support block for the safety opening and closing device of the turbine unit's entrance door.

[0028] Figure 10 A cross-sectional view of the locking component of the safety opening and closing device for the turbine unit's entrance door. Detailed Implementation

[0029] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0030] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0031] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0032] Example 1

[0033] Reference Figure 1 , Figure 2 and Figure 7 This is the first embodiment of the present invention. This embodiment provides a safety opening and closing device for the entrance door of a water turbine unit. The safety opening and closing device for the entrance door of a water turbine unit includes a supporting component 100 and a moving component 200. The supporting component 100 can be connected to the entrance door, and the moving component 200 can support the entrance door when opening and closing.

[0034] Specifically, the supporting component 100 includes a base 101, a support member 102 disposed inside the base 101, reinforcing members 103 disposed at the bottom and one side of the support member 102, and a locking member 104 disposed on the side of the base 101. The support member 102 serves to support the entrance door, preventing it from falling downwards due to the gap between itself and the door frame when the surface bolts are removed, thus preventing pressure on the side hinges. The reinforcing members 103 and the locking member 104 prevent the device from detaching from the entrance door during opening and closing.

[0035] Preferably, the movable component 200 includes an adjusting member 201 disposed at the bottom of the base 101, and casters 202 disposed at the bottom of the adjusting member 201. The adjusting member 201 can adjust the height of the device to accommodate different turbine entrances. A connecting plate is welded to the top of the casters 202, which can be fixedly connected to the adjusting member 201 by bolts.

[0036] The working principle of this device is as follows: When opening the turbine access door, first remove the bolts connecting the bottom of the access door to the turbine casing flange. Then, place the device at the bottom of the access door and the door frame, and adjust the height of the device using the adjusting component 201 so that the support component 102 just holds the access door and the door frame in place. Next, connect the device to the flange hole at the bottom of the access door using the locking component 104. Then, remove the other bolts connecting the access door to the flange and open the access door. At the moment of opening, the reinforcing component 103 and the support component 102 further secure the access door, preventing the device from detaching. When closing, simply rotate the access door to close it, align it with the door frame, and the reinforcing component 103 and the support component 102 will automatically release their fixed state.

[0037] Example 2

[0038] Reference Figures 2-10 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0039] Specifically, the base 101 is stepped, with one side lower than the other. A sliding groove 101a is provided on the lower side, and an arc-shaped groove 101b is provided on the higher side. Limiting grooves 101a-1 are symmetrically provided on both sides of the sliding groove 101a. The top of the lower part of the base 101 is rounded to better fit the circular entrance door. Two limiting grooves 101a-1 are provided on each side wall of the sliding groove 101a, and both have a square cross-section. The arc of the arc-shaped groove 101b is adapted to the arc of the entrance door, and has a relatively wide width.

[0040] Preferably, the support member 102 includes a first support block 102a and a second support block 102b disposed within a slide groove 101a. Limiting blocks 102c are symmetrically disposed on both sides of the first support block 102a and the second support block 102b. The limiting blocks 102c cooperate with the limiting groove 101a-1, and both the first support block 102a and the second support block 102b slide within the slide groove 101a. The cooperation between the limiting blocks 102c and the limiting groove 101a-1 ensures that the first support block 102a and the second support block 102b can only move vertically up and down within the slide groove 101a. The tops of both the first support block 102a and the second support block 102b are arc-shaped and conform to the curvature of the entrance door. Furthermore, an inclined surface 102a-2 is provided on one side of the top of the first support block 102a. When the inclined surface 102a-2 is subjected to horizontal force, the first support block 102a will retract into the base 101.

[0041] Preferably, the support member 102 further includes a first toothed plate 102a-1 disposed at the bottom of the first support block 102a and a second toothed plate 102b-1 disposed at the bottom of the second support block 102b. The first toothed plate 102a-1 and the second toothed plate 102b-1 are welded together with the first support block 102a and the second support block 102b, respectively, and the length of the first toothed plate 102a-1 is longer than the length of the second toothed plate 102b-1.

[0042] Preferably, a gear 102d is further provided between the first toothed plate 102a-1 and the second toothed plate 102b-1. The gear 102d is rotatably engaged with the inner wall of the base 101. The first toothed plate 102a-1 and the second toothed plate 102b-1 respectively mesh with the gear 102d. A first wedge-shaped surface 102b-2 is also provided at the bottom of the second toothed plate 102b-1. When the first toothed plate 102a-1 moves downward, the gear 102d will rotate. The second toothed plate 102b-1 on the other side of the gear 102d will move upward under the action of the gear 102d. That is, when the first support block 102a moves downward, the second support block 102b will move upward, and when the second support block 102b moves downward, the first support block 102a will move upward. When in use, as the entrance door is opened and moved, due to the large gap between the entrance door hinges, the entrance door hinge will fall a certain distance when it is disengaged from the door frame. The second support block 102b supporting the entrance door will then move downwards, while the first support block 102a will move upwards after being disengaged from the door frame, thereby clamping the entrance door in the middle and fixing the device to the entrance door.

[0043] Preferably, the reinforcement 103 includes a trapezoidal plate 103a disposed at the bottom of the second toothed plate 102b-1, a vertical strip plate 103b disposed on one side of the trapezoidal plate 103a, and a pressure block 103c disposed on the top side of the vertical strip plate 103b. The trapezoidal plate 103a, the vertical strip plate 103b, and the pressure block 103c are all provided with corresponding slots in the base 101 to allow them to slide within the base 101.

[0044] Preferably, the trapezoidal plate 103a is provided with a second wedge surface 103a-1 at both ends, wherein the second wedge surface 103a-1 at one end is slidably engaged with the first wedge surface 102b-2, the vertical plate 103b is provided with a third wedge surface 103b-1 at both ends, wherein the third wedge surface 103b-1 at one end is slidably engaged with the second wedge surface 103a-1 at the other end of the trapezoidal plate 103a, and the pressure block 103c is provided with a fourth wedge surface 103c-1 at the end, wherein the fourth wedge surface 103c-1 is slidably engaged with the third wedge surface 103b-1 at the other end of the vertical plate 103b. The fit between the wedge surfaces causes the trapezoidal plate 103a to move horizontally to the right when the second toothed plate 102b-1 moves downward, while the bottom of the vertical strip plate 103b moves vertically upward under force, and the end of the pressure block 103c moves horizontally to the left under force, thereby pressing the entrance door against and tightening it.

[0045] Preferably, the locking member 104 includes a first sliding block 104a disposed within the arc-shaped groove 101b, the first sliding block 104a slidingly engaging with the arc-shaped groove 101b. The first sliding block 104a has protrusions at both ends that can engage with the grooves on both sides of the arc-shaped groove 101b. Moving the sliding block 104a allows it to slide along the arc-shaped groove 101b. Two sliding blocks 104a are disposed within the arc-shaped groove 101b.

[0046] Furthermore, the locking component 104 also includes a second sliding block 104b disposed inside the first sliding block 104a, and a bolt 104c disposed inside the second sliding block 104b. The second sliding block 104b is slidably engaged with the first sliding block 104a, and the bolt 104c is threadedly engaged with the second sliding block 104b. Both sides of the second sliding block 104b are also provided with protrusions, allowing it to move within the grooves of the first sliding block 104a. Manually manipulating the second sliding block 104b allows it to move slightly within the first sliding block 104a. A threaded hole is provided in the center of the second sliding block 104b. Tightening the bolt 104c allows one end of the bolt 104c to be turned into the flange hole on the surface of the entrance door, thereby fixing the base 101 to the entrance door and preventing it from disengaging during movement. The first sliding block 104a and the second sliding block 104b are designed so that the bolt 104c can be adjusted laterally and longitudinally within a certain range, preventing the bolt 104c from being unable to enter due to different numbers and positions of flange holes in different entrance doors.

[0047] Furthermore, the adjusting component 201 includes a right-hand screw 201a disposed at the bottom of the base 101, and a left-hand screw 201b disposed at the bottom of the right-hand screw 201a. The right-hand screw 201a and the left-hand screw 201b are connected by a threaded cylinder 201c, and a caster wheel 202 is fixedly connected to the bottom of the left-hand screw 201b. When the threaded cylinder 201c is turned, the right-hand screw 201a and the left-hand screw 201b will move in opposite directions, thereby realizing the adjustment of the device height.

[0048] In use, first remove the bolts connecting the bottom of the entrance door to the door frame via flange. Then, place the device at the bottom of the entrance door and use a wrench to tighten the threaded cylinder 201c, causing the right-hand screw 201a and the left-hand screw 201b to move relative to each other for height adjustment, until the first support block 102a on the base 101 abuts against the door frame and the second support block 102b abuts against the entrance door. Then, adjust the first sliding block 104a and the second sliding block 104b so that the bolt 104c is aligned with the flange hole at the bottom of the entrance door and turned in, thus connecting the base 101 to the entrance door. When the entrance door is opened, due to the certain gap in the hinges during installation, the entrance door will fall a certain distance when it detaches from the door frame, thus pressing down the second support block 102b at its bottom. At this time, the first support block 102a will move upward under the action of the first toothed plate 102a-1, the second toothed plate 102b-1, and the gear 102d, extending out of the slide groove 101a. This creates a certain space between the first support block 102a and the higher part of the base 101, and the entrance door fits perfectly into this space, thus further securing the entrance door to the base 101. Additionally, when closing the entrance door, when the extended first support block 102a touches the door frame, the inclined surface 102a-2 on its top side will be subjected to force, thereby pressing the first support block 102a back into the slide groove 101a. At the same time, the second support block 102b will rise again, thereby pushing the entrance door upward a certain distance. In this way, there is no need to manually lift the entrance door upward again, and it can automatically align the flange hole. After installation, the threaded cylinder 201c is adjusted again to lower the height of the device, so that the device can be removed for the next use.

[0049] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A safety opening and closing device for a turbine unit entrance door, characterized in that: include, The support assembly (100) includes a base (101), a support member (102) disposed inside the base (101), reinforcing members (103) disposed at the bottom and one side of the support member (102), and a locking member (104) disposed on the side of the base (101); and, The movable component (200) includes an adjustment member (201) disposed at the bottom of the base (101) and a caster wheel (202) disposed at the bottom of the adjustment member (201). The base (101) is stepped in shape with one side lower and the other side higher. A sliding groove (101a) is provided in the lower side and an arc groove (101b) is provided in the higher side. Limiting grooves (101a-1) are also symmetrically provided on both sides of the sliding groove (101a). The support member (102) includes a first support block (102a) and a second support block (102b) disposed in the slide groove (101a). Limiting blocks (102c) are symmetrically disposed on both sides of the first support block (102a) and the second support block (102b). The limiting blocks (102c) cooperate with the limiting groove (101a-1). The first support block (102a) and the second support block (102b) are both slidably engaged with the slide groove (101a). The support member (102) further includes a first toothed plate (102a-1) disposed at the bottom of the first support block (102a) and a second toothed plate (102b-1) disposed at the bottom of the second support block (102b). A gear (102d) is also provided between the first toothed plate (102a-1) and the second toothed plate (102b-1). The gear (102d) is rotatably engaged with the inner wall of the base (101). The first toothed plate (102a-1) and the second toothed plate (102b-1) respectively mesh with the gear (102d). The bottom of the second toothed plate (102b-1) is also provided with a first wedge-shaped surface (102b-2). The reinforcement component (103) includes a trapezoidal plate (103a) disposed at the bottom of the second toothed plate (102b-1), a vertical strip plate (103b) disposed on one side of the trapezoidal plate (103a), and a pressure block (103c) disposed on the top side of the vertical strip plate (103b). The trapezoidal plate (103a) is provided with a second wedge surface (103a-1) at both ends, wherein the second wedge surface (103a-1) at one end is slidably engaged with the first wedge surface (102b-2). The vertical strip plate (103b) is provided with a third wedge surface (103b-1) at both ends, wherein the third wedge surface (103b-1) at one end is slidably engaged with the second wedge surface (103a-1) at the other end of the trapezoidal plate (103a). The pressure block (103c) is provided with a fourth wedge surface (103c-1) at one end, wherein the fourth wedge surface (103c-1) is slidably engaged with the third wedge surface (103b-1) at the other end of the vertical strip plate (103b).

2. The safety opening and closing device for the turbine unit entrance door as described in claim 1, characterized in that: The locking member (104) includes a first sliding block (104a) disposed in the arc groove (101b), and the first sliding block (104a) slides in cooperation with the arc groove (101b).

3. The safety opening and closing device for the turbine unit entrance door as described in claim 2, characterized in that: The locking member (104) further includes a second sliding block (104b) disposed inside the first sliding block (104a) and a bolt (104c) disposed inside the second sliding block (104b). The second sliding block (104b) is slidably engaged with the first sliding block (104a), and the bolt (104c) is threadedly engaged with the second sliding block (104b).

4. The safety opening and closing device for the turbine unit entrance door as described in claim 3, characterized in that: The adjusting component (201) includes a right-hand screw (201a) disposed at the bottom of the base (101) and a left-hand screw (201b) disposed at the bottom of the right-hand screw (201a). The right-hand screw (201a) and the left-hand screw (201b) are connected by a threaded cylinder (201c). The bottom of the left-hand screw (201b) is fixedly connected to the universal wheel (202).

Images