Adjustable water seal device for down-the-hole arc gate and installation method

Abstract

The application discloses an adjustable water top sealing device for a down-the-hole arc gate and a mounting method, which comprises a supporting positioning block, an adjusting bolt, a water sealing mounting frame, a P-shaped water seal, a water seal backing plate, a water seal pressing plate, a water seal fastener and a mounting frame fastener. The P-shaped water seal and the water seal backing plate are mounted on the water sealing mounting frame through the water seal pressing plate and the water seal fastener, the water sealing mounting frame is mounted on the top of the arc gate leaf panel through the mounting frame fastener, the supporting positioning block is arranged above the water sealing mounting frame, and the bottom of the adjusting bolt is tightly contacted with the top of the water sealing mounting frame after the adjusting bolt passes through the threaded hole of the supporting positioning block. During installation, the adjusting bolt is screwed when the arc gate leaf falls to the bottom sill state, the water sealing mounting frame is pushed to move downwards, the P-shaped water seal is contacted with the water stop seat plate and a pre-pressing amount is kept. During on-site installation, the water top sealing device is adjusted to a suitable position according to the actual installation condition of the breast wall embedded part of the gate slot, the manufacturing and installation precision requirement is greatly reduced, the reliability of the water top sealing device is improved, the structure is simple, and the installation is convenient.

Description

Technical Field

[0001] This invention belongs to the field of water conservancy and hydropower engineering technology, specifically relating to an adjustable top water seal device and installation method for a submerged arc gate. Background Technology

[0002] In water conservancy and hydropower projects, to meet the requirement of top water sealing after the orifice of a submerged arc gate is fully closed, a top water seal is usually installed at the top of the gate leaf. The top water seal is generally a P-type water seal, which is installed on the top water seal seat frame connected to the gate leaf by fasteners. A water-stop plate is installed on the breast wall embedded part at the top of the orifice. When the arc gate descends to the bottom sill and completely closes the orifice, the top water seal, which descends with the arc gate leaf, will finally press against the water-stop plate on the breast wall embedded part to achieve the water sealing effect.

[0003] Previously, the mounting bracket for the top water seal was typically welded to the gate leaf as a single unit at the factory. To ensure that the top water seal made tight contact with the water-stop plate on the breast wall embedded part when the gate descended to the sill, strict control over the manufacturing precision of the gate leaf and the manufacturing and installation precision of the gate slot embedded part was required. If the precision was insufficient, water leakage would occur at the top when the gate descended to the sill, as the top water seal had not yet made contact with the water-stop plate on the breast wall embedded part; or, during the closure of the orifice, the bottom of the gate would not have reached the sill after the top water seal made tight contact with the water-stop plate on the breast wall embedded part, resulting in water leakage at the bottom. Due to the failure to meet the required manufacturing and installation precision of the gate leaf and embedded parts, water leakage at the top or bottom of the gate frequently occurred in previous projects when it was fully closed.

[0004] The main method for addressing water leakage at the top or bottom of a submerged arc gate after the orifice is fully closed is to strictly control the manufacturing and installation precision of the gate leaf and slot. Even so, because zero tolerance cannot be achieved during actual manufacturing or installation, it is difficult to ensure that the top or bottom of the submerged arc gate is completely leak-free. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an adjustable top water seal device for submerged arc gates, which can effectively solve the aforementioned problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an adjustable top water seal device for a submerged arc gate, comprising a support positioning block, adjusting bolts, a water seal mounting bracket, a P-type water seal, a water seal pad, a water seal pressure plate, water seal fasteners, and mounting bracket fasteners. The P-type water seal and water seal pad are installed on the water seal mounting frame through the water seal pressure plate and water seal fasteners. A row of bolt holes is opened on the top of the arc door leaf panel along the width direction of the opening. The water seal mounting frame is installed on the top of the door leaf panel by screwing the mounting frame fasteners into the bolt holes on the top of the arc door leaf panel. The support positioning block is set above the water seal mounting frame. After the adjusting bolt passes through the threaded hole of the support positioning block, its bottom is tightened against the top of the water seal mounting frame.

[0007] Furthermore, the support positioning block is a rectangular steel block with a threaded hole running from top to bottom in the middle. The support positioning block is welded to the top of the door leaf panel and arranged in a row along the width of the hole, with a total of several blocks.

[0008] Furthermore, the number of adjusting bolts is the same as the number of support positioning blocks.

[0009] Furthermore, the water seal mounting frame is a steel plate composite welded structure, which is manufactured separately from the arc door leaf, including a bottom plate, a top plate, a web plate, and stiffening plates; a row of bolt holes is opened on the bottom plate to install the P-type water seal and water seal pad on the water seal mounting frame through the water seal pressure plate and water seal fasteners; a row of several holes is arranged horizontally along the width of the opening on the top plate, the number of which is the same as the number of support positioning blocks; a row of elongated holes is opened horizontally in the middle of the web plate along the width of the opening, and the number and center position of the elongated holes correspond one-to-one with the bolt holes opened on the top of the door leaf panel.

[0010] Furthermore, the extension direction of the elongated hole is consistent with the height direction of the door leaf panel, so that the water seal mounting bracket can still move up and down along the extension direction of the elongated hole even when the mounting bracket fasteners are pre-tightened.

[0011] Furthermore, the P-type water seal is located at the bottom of the water seal mounting bracket, and the sealing surface of the P-type water seal faces the water-stop seat plate on the embedded part of the arc gate groove.

[0012] An installation method for an adjustable top water seal device for a submerged arc gate, as described above, includes the following steps: S1, Install the P-type water seal and water seal pad onto the water seal mounting bracket using the water seal pressure plate and water seal fasteners; S2, the mounting bracket fasteners pass through the elongated hole of the water seal mounting bracket and the bolt hole opened at the top of the door leaf panel. With a small pre-tightening force, the water seal mounting bracket with the installed P-type water seal is attached to the top of the arc door leaf panel, and the water seal mounting bracket can still move up and down within the range of the elongated hole under the action of external force. S3, with the arc gate leaf down to the bottom sill, screw the adjusting bolt into the threaded hole on the support positioning block until the bottom of the adjusting bolt is pressed against the top plate on the water seal mounting bracket. Continue to tighten the adjusting bolt downwards and push the water seal mounting bracket with the installed P-type water seal downwards until the P-type water seal contacts the water stop seat plate on the arc gate groove embedded part and maintains a suitable preload. S4. Tighten the mounting bracket fasteners, lift the arc gate leaf upwards a certain distance, and then perform on-site water sealing welding at the corner where the bottom of the web plate of the water seal mounting bracket fits against the arc gate leaf panel.

[0013] Furthermore, the smaller preload mentioned in step S2 is a preload that is both able to attach the water seal mounting bracket to the top of the door leaf panel and allow the water seal mounting bracket to move freely along the direction of the elongated hole under the push of the adjusting bolt.

[0014] Furthermore, the appropriate pre-compression amount mentioned in step S3 is: the compression amount that allows the arc gate leaf to completely fall to the bottom sill after the P-type water seal contacts the water-stop seat plate, while ensuring the reliability of the water seal.

[0015] Furthermore, the on-site water sealing weld described in step S4 is a fillet weld, used to seal the gap between the bottom of the web of the water seal mounting frame and the panel of the arc door leaf.

[0016] The beneficial effects of this invention are as follows: The adjustable top water seal device for submerged arc gates provided by this invention can adjust the top water seal to a suitable position during on-site installation of the gate leaf, taking into account the actual installation conditions of the embedded parts in the gate slot breast wall. This significantly reduces the manufacturing and installation precision requirements of the arc gate leaf and the embedded parts in the gate slot, and improves the reliability of the top water seal of the submerged arc gate. The device provided by this invention has a simple structure, is easy to install, and can effectively improve the water-blocking sealing performance of submerged arc gates, and can be widely used in water conservancy and hydropower projects. Attached Figure Description

[0017] Figure 1 A cross-sectional view of the adjustable top water seal device for a submerged arc gate provided by the present invention; Figure 2 A perspective view of the water seal mounting bracket provided by the present invention.

[0018] In the diagram: 1. Adjusting bolt; 2. Support positioning block; 3. Water seal mounting bracket; 4. P-type water seal; 5. Water seal pad; 6. Water seal pressure plate; 7. Water seal fastener; 8. Mounting bracket fastener; 9. On-site water sealing weld; 31. Base plate; 32. Top plate; 33. Web plate; 34. Rib plate; 331. Oblong hole; A1. Curved door leaf; A11. Door leaf panel; B1. Embedded part of breast wall; B11. Water stop seat plate. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0020] In the description of this invention, it should be noted that the terms "upper", "middle", "lower", "inner", "outer", "both sides", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this invention and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0021] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0022] like Figure 1 , 2 As shown, the present invention provides an adjustable top water seal device for a submerged arc gate, comprising a support positioning block 2, an adjusting bolt 1, a water seal mounting bracket 3, a P-type water seal 4, a water seal pad 5, a water seal pressure plate 6, a water seal fastener 7, and a mounting bracket fastener 8. The P-type water seal 4 and the water seal pad 5 are mounted on the water seal mounting bracket 3 via the water seal pressure plate 6 and the water seal fastener 7. A row of bolt holes is opened on the top of the arc gate leaf panel A11 along the width direction of the orifice. The water seal mounting bracket 3 is mounted on the top of the gate leaf panel A11 by screwing the mounting bracket fastener 8 into the bolt holes on the top of the arc gate leaf panel A11. The support positioning block 2 is positioned above the water seal mounting bracket 3. After the adjusting bolt 1 passes through the threaded hole of the support positioning block 2, its bottom is tightened against the top of the water seal mounting bracket 3.

[0023] The water seal mounting bracket 3 is installed on the top of the door leaf panel A11 via mounting bracket fasteners 8. The P-type water seal 4 is fixed on the water seal mounting bracket 3. By turning the adjusting bolt 1 on the support positioning block 2, the adjusting bolt 1 pushes the water seal mounting bracket 3 downward, causing the water seal mounting bracket 3 to move downward relative to the door leaf panel A11. This moves the P-type water seal 4 to contact the water-stop seat plate B11 on the breast wall embedded part B1 and maintain a suitable preload, thus achieving on-site adjustment of the top water seal position. By setting up the cooperation structure of the support positioning block 2, adjusting bolt 1, and water seal mounting bracket 3, the position of the P-type water seal 4 can be flexibly adjusted according to the actual installation position of the door slot breast wall embedded part B1 during on-site installation. This overcomes the technical defect of traditional structures where the top water seal cannot accurately fit with the water-stop seat plate B11 due to manufacturing and installation errors.

[0024] Furthermore, the support positioning block 2 is a rectangular steel block with a threaded hole running from top to bottom in the middle. The support positioning block 2 is welded to the top of the door leaf panel A11, and several blocks are arranged horizontally along the width of the hole.

[0025] The support positioning block 2 is welded and fixed to the top of the door leaf panel A11. Its threaded hole is used to screw in the adjusting bolt 1. When the adjusting bolt 1 is screwed down, its bottom is pressed against the water seal mounting bracket 3 and provides a downward thrust. Rectangular steel blocks are used as support positioning blocks 2, which are simple in structure and easy to process. Several support positioning blocks 2 are arranged horizontally along the width of the opening on the top of the door leaf panel A11 to ensure that a uniform adjustment force is provided to the water seal mounting bracket 3 along the entire width of the opening, and to prevent the water seal mounting bracket 3 from tilting during the adjustment process.

[0026] Furthermore, the number of adjusting bolts 1 is the same as the number of support positioning blocks 2. Each support positioning block 2 is provided with one adjusting bolt 1, which can ensure that fine adjustments can be made independently at various positions in the width direction of the orifice, ensuring the synchronicity and uniformity of the overall downward movement of the water seal mounting bracket 3, so that the P-type water seal 4 is in uniform contact with the water-stop seat plate B11 along the entire width direction.

[0027] Furthermore, the water seal mounting frame 3 is a steel plate composite welded structure, manufactured separately from the arc door leaf A1, including a base plate 31, a top plate 32, a web plate 33, and stiffening plates 34. A row of bolt holes is provided on the base plate 31 to allow the P-type water seal 4 and water seal pad 5 to be installed on the water seal mounting frame 3 via a water seal pressure plate 6 and water seal fasteners 7. A row of several holes is arranged horizontally along the width of the opening on the top plate 32, the number being the same as the number of support positioning blocks 2. A row of elongated holes 331 is horizontally provided in the middle of the web plate 33 along the width of the opening, the number and center position of which correspond one-to-one with the bolt holes provided on the top of the door leaf panel A11.

[0028] The water seal mounting bracket 3 and the arched door leaf A1 are manufactured separately. The water seal mounting bracket 3 is connected to the door leaf panel A11 via mounting bracket fasteners 8 passing through the elongated hole 331. In the incompletely locked state, the water seal mounting bracket 3 can move up and down along the extension direction of the elongated hole 331. When the adjusting bolt 1 pushes the water seal mounting bracket 3 downward, the entire water seal mounting bracket 3 moves downward to the target position and is then locked in place. The water seal mounting bracket 3 adopts a steel plate combined welded structure, which has sufficient structural strength and rigidity. The setting of the elongated hole 331 allows the water seal mounting bracket 3 to have an adjustable space for up and down movement, which is one of the core structures for achieving adjustable top water seal position. The separate manufacturing method allows the water seal mounting bracket 3 to be adjusted on-site according to the actual installation situation, without the need for welding and fixing to the door leaf in the factory, which greatly reduces the manufacturing and installation accuracy requirements.

[0029] Furthermore, the extension direction of the elongated hole 331 is consistent with the height direction of the door leaf panel A11, allowing the water seal mounting bracket 3 to move up and down along the extension direction of the elongated hole 331 even when the mounting bracket fastener 8 is pre-tightened. The alignment of the extension direction of the elongated hole 331 with the height direction of the door leaf panel A11 ensures that the water seal mounting bracket 3 can only move in the vertical direction and will not shift left or right, thus guaranteeing the accuracy and stability of the adjustment direction of the P-type water seal 4.

[0030] Furthermore, the P-type water seal 4 is disposed at the bottom of the water seal mounting bracket 3, with the sealing surface of the P-type water seal 4 facing the water-stop seat plate B11 on the arch door groove embedded part B1. Because the P-type water seal 4 is disposed at the bottom of the water seal mounting bracket 3, when the adjusting bolt 1 pushes the water seal mounting bracket 3 downwards, the P-type water seal 4 moves downwards and presses against the water-stop seat plate B11, with its sealing surface facing the water-stop seat plate B11, ensuring the reliability of the water seal.

[0031] The present invention also provides an installation method for an adjustable top water seal device for a submerged arc gate, comprising the following steps: S1, install the P-type water seal 4 and water seal pad 5 on the water seal mounting bracket 3 through the water seal pressure plate 6 and water seal fastener 7; S2, the mounting bracket fastener 8 passes through the elongated hole 331 of the water seal mounting bracket 3 and the bolt hole opened on the top of the door leaf panel A11. With a small pre-tightening force, the water seal mounting bracket 3 with the installed P-type water seal 4 is attached to the top of the arc door leaf panel A11, and the water seal mounting bracket 3 is kept able to move up and down within the range of the elongated hole 331 under the action of external force. S3, with the arc gate leaf A1 down to the bottom sill, screw the adjusting bolt 1 into the threaded hole on the support positioning block 2 until the bottom of the adjusting bolt 1 is pressed against the top plate 32 on the water seal mounting bracket 3. Continue to tighten the adjusting bolt 1 downwards, and push the water seal mounting bracket 3 with the P-type water seal 4 installed downwards until the P-type water seal 4 contacts the water stop seat plate B11 on the arc gate groove embedded part B1 and maintains a suitable preload. S4, tighten the mounting bracket fasteners 8, lift the arc door leaf A1 upwards a certain distance, and then perform on-site water sealing welding 9 at the corner where the bottom of the web plate 33 of the water seal mounting bracket 3 fits against the arc door leaf panel A11.

[0032] By operating in sequence through steps S1 to S4, the P-type water seal 4 is first pre-installed on the water seal mounting bracket 3. Then, the water seal mounting bracket 3 is installed on the top of the door leaf panel A11 using a pre-tightening method, leaving adjustment margin. Next, with the door leaf A1 of the arc gate at the bottom sill in its actual working state, the water seal mounting bracket 3 is precisely pushed down using the adjusting bolt 1, so that the P-type water seal 4 and the water-stop seat plate B11 achieve optimal contact. Finally, permanent fixing is achieved by locking the fasteners and performing on-site water-sealing welding 9, completing the entire installation and adjustment process. By adjusting under the actual working condition of the door leaf A1 at the bottom sill, it is ensured that the installation position of the P-type water seal 4 is completely consistent with the actual working position, avoiding the water-sealing failure problem caused by the deviation between theoretical calculations and actual working conditions in traditional methods. The pre-tightening installation method in step S2 leaves room for subsequent adjustments; the adjustment method in step S3 is precise and controllable; and the water-sealing welding 9 in step S4 effectively ensures the sealing reliability for long-term use.

[0033] Furthermore, the smaller preload force mentioned in step S2 is a preload force that is both sufficient to attach the water seal mounting bracket 3 to the top of the door leaf panel A11 and to allow the water seal mounting bracket 3 to move freely along the direction of the elongated hole 331 under the push of the adjusting bolt 1. By controlling the preload force within a suitable range, it is ensured that the water seal mounting bracket 3 will not slip off due to gravity or vibration during the adjustment process, and that the adjusting bolt 1 can smoothly push the water seal mounting bracket 3 to move.

[0034] Furthermore, the appropriate pre-compression amount mentioned in step S3 is the compression amount required to ensure that the arc gate leaf A1 can completely fall to the bottom sill after the P-type water seal 4 contacts the water-stop plate B11, while ensuring the reliability of the water seal. By controlling the pre-compression amount within the optimal range, two key objectives are achieved simultaneously—reliable sealing between the P-type water seal 4 and the water-stop plate B11, and ensuring that the arc gate leaf A1 can completely fall to the bottom sill to guarantee bottom water seal, thus avoiding the technical dilemma of sacrificing one aspect for another in traditional structures.

[0035] Furthermore, the on-site water-sealing weld 9 described in step S4 is a fillet weld, used to seal the gap between the bottom of the web plate 33 of the water seal mounting bracket 3 and the arc door leaf panel A11. Using a fillet weld for the on-site water-sealing weld 9 simplifies the welding operation and effectively seals the tiny gap between the bottom of the web plate 33 and the door leaf panel A11, preventing water leakage during water blocking and further improving the overall reliability of the water seal.

[0036] The adjustable top water seal device for a submerged arc gate provided by this invention has the following overall working principle: The water seal mounting bracket 3 and the arc door leaf A1 are manufactured separately. The P-type water seal 4 and the water seal pad 5 are pre-installed on the base plate 31 of the water seal mounting bracket 3 through the water seal pressure plate 6 and the water seal fastener 7. During installation, the mounting bracket fastener 8 is passed through the elongated hole 331 on the web plate 33 of the water seal mounting bracket 3 and the bolt hole on the top of the door leaf panel A11 to fit the water seal mounting bracket 3 against the top of the door leaf panel A11. However, at this time, the mounting bracket fastener 8 only applies a small pre-tightening force, so that the water seal mounting bracket 3 can still move up and down along the extension direction of the elongated hole 331 under the action of external force, leaving room for subsequent adjustment.

[0037] With the arched gate leaf A1 at the bottom sill, tighten the adjusting bolt 1 on the support positioning block 2. The adjusting bolt 1 is screwed downwards into the threaded hole of the support positioning block 2, and its bottom is pressed against the top plate 32 of the water seal mounting bracket 3. Continue to tighten the adjusting bolt 1 downwards, which pushes the water seal mounting bracket 3 downwards as a whole. The water seal mounting bracket 3 drives the P-type water seal 4 installed at its bottom to move downwards synchronously until the P-type water seal 4 contacts the water-stop seat plate B11 on the breast wall embedded part B1. Depending on the actual situation, the adjusting bolts 1 can be further fine-tuned to ensure that the P-type water seal 4 maintains a uniform and appropriate preload with the water-stop seat plate B11 along the entire width of the orifice.

[0038] After the P-type water seal 4 is adjusted to the appropriate position, tighten all mounting bracket fasteners 8 to secure the water seal mounting bracket 3 to the door leaf panel A11. Then, lift the curved door leaf A1 upwards a certain distance and perform on-site water sealing welding 9 at the corner where the bottom of the web plate 33 of the water seal mounting bracket 3 meets the curved door leaf panel A11. Seal the gap between the two with a fillet weld to prevent water from leaking out of the gap when blocking water.

[0039] At this point, the adjustable top water seal device has been installed and adjusted. When the arc gate is fully closed to block water, the P-type water seal 4 can reliably fit with the water-stop seat plate B11 to achieve effective water sealing at the top. At the same time, the arc gate can be completely lowered to the bottom sill to ensure water sealing at the bottom.

[0040] Example 1 Taking a submerged arc gate in a water conservancy project as an example, the gate opening width is 8m. After the gate leaf A1 is installed in place, the top water seal is adjusted on-site according to the actual installation position of the breast wall embedded part B1.

[0041] First, the P-type water seal 4 and water seal pad 5 are installed on the base plate 31 of the water seal mounting bracket 3 via the water seal pressure plate 6 and water seal fasteners 7. The water seal fasteners 7 are bolts, which are inserted sequentially through the bolt holes of the base plate 31 and tightened to secure them.

[0042] Next, the water seal mounting bracket 3 is hoisted to the top of the arched door leaf A1, aligning the elongated hole 331 on the web plate 33 with the bolt holes on the top of the door leaf panel A11. The mounting bracket fastener 8 is inserted into the elongated hole 331 and the bolt holes, and a small pre-tightening force is applied with a wrench to ensure the water seal mounting bracket 3 adheres to the top of the door leaf panel A11. Simultaneously, pushing the water seal mounting bracket 3 by hand allows it to move freely up and down within the range of the elongated hole 331.

[0043] Then, lower the arched door leaf A1 to the bottom sill, at which point the waterstop plate B11 on the breast wall embedded part B1 is in a fixed position. Screw the adjusting bolts 1 one by one into the threaded holes of the support positioning block 2, and turn each adjusting bolt 1 downwards in sequence. When the bottom of the adjusting bolt 1 contacts the top plate 32, continue turning, observing that the P-type water seal 4 gradually approaches the waterstop plate B11. When the P-type water seal 4 begins to contact the waterstop plate B11, use a feeler gauge to check the compression of the P-type water seal 4, and fine-tune each adjusting bolt 1 one by one to ensure that the preload of the P-type water seal 4 is consistent along its width, and that the preload is controlled within the design requirements.

[0044] Finally, after confirming that the pre-pressure of the P-type water seal 4 is appropriate, tighten all mounting bracket fasteners 8 to completely lock and fix the water seal mounting bracket 3 to the door leaf panel A11. Raise the arc door leaf A1 upwards by 500mm, and weld at the corner where the bottom of the web plate 33 of the water seal mounting bracket 3 fits against the door leaf panel A11. The fillet weld leg height is 6mm, achieving on-site water sealing weld 9. After welding, conduct a water seepage test to verify that the water sealing effect meets the design requirements.

[0045] Example 2 The advantages of this invention are particularly evident in situations where there are significant installation deviations in the embedded parts of the door slot. For example, if the actual installation position of the water-stop plate B11 on the breast wall embedded part B1 is offset downwards by 5mm compared to the theoretical position, the traditional integral welded structure will not meet the water-sealing requirements under this condition, necessitating rework to adjust the embedded part's position.

[0046] Using the adjustable top water seal device provided by this invention, after the arc gate leaf A1 falls to the bottom sill, each adjusting bolt 1 is further screwed down, pushing the water seal mounting bracket 3 and the P-type water seal 4 downward by an additional 5mm. This ensures that the P-type water seal 4 and the offset water-stop seat plate B11 can still maintain tight contact and a suitable preload. The entire adjustment process is simple to operate, requires no rework of the door slot embedded parts, and significantly saves construction costs and time.

[0047] Therefore, the adjustable top water seal device provided by the present invention effectively solves the problem of excessively high requirements for manufacturing and installation precision in traditional structures, and has significant practical value.

[0048] This invention provides an adjustable top water seal device and installation method for a submerged arc gate. During the installation of the gate leaf, the top water seal can be adjusted to a suitable position based on the actual installation conditions of the embedded parts in the gate slot breast wall. This significantly reduces the manufacturing and installation precision requirements of the gate leaf and the embedded parts in the gate slot, thereby improving the reliability of the top water seal of the submerged arc gate. The device provided by this invention has a simple structure, is easy to install, and can effectively improve the water-blocking sealing performance of the submerged arc gate, making it widely applicable in water conservancy and hydropower projects.

[0049] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An adjustable top water seal device for a submerged arc gate, characterized in that, Includes support positioning block (2), adjusting bolt (1), water seal mounting bracket (3), P-type water seal (4), water seal pad (5), water seal pressure plate (6), water seal fastener (7), and mounting bracket fastener (8); The P-type water seal (4) and water seal pad (5) are installed on the water seal mounting bracket (3) through the water seal pressure plate (6) and water seal fastener (7). A row of bolt holes is opened on the top of the arc door leaf panel (A11) along the width direction of the opening. The water seal mounting bracket (3) is installed on the top of the door leaf panel (A11) through the bolt holes on the top of the arc door leaf panel (A11) by the mounting bracket fastener (8). The support positioning block (2) is set above the water seal mounting bracket (3). After the adjusting bolt (1) passes through the threaded hole of the support positioning block (2), its bottom is tightened against the top of the water seal mounting bracket (3).

2. The adjustable top water seal device for a submerged arc gate according to claim 1, characterized in that, The support positioning block (2) is a rectangular steel block with a threaded hole running from top to bottom in the middle. The support positioning block (2) is welded to the top of the door leaf panel (A11) and arranged in a row along the width of the hole.

3. The adjustable top water seal device for a submerged arc gate according to claim 1, characterized in that, The number of adjusting bolts (1) is the same as the number of support positioning blocks (2).

4. The adjustable top water seal device for a submerged arc gate according to claim 1, characterized in that, The water seal mounting frame (3) is a steel plate combined welded structure, which is made separately from the arc door leaf (A1). It includes a bottom plate (31), a top plate (32), a web plate (33), and a stiffening plate (34). A row of bolt holes is opened on the bottom plate (31) so that the P-type water seal (4) and the water seal pad (5) can be installed on the water seal mounting frame (3) through the water seal pressure plate (6) and the water seal fastener (7). A row of several holes are arranged horizontally along the width direction of the hole on the top plate (32), and the number is the same as the number of the support positioning blocks (2). A row of elongated holes (331) is opened horizontally in the middle of the web plate (33) along the width direction of the hole. The number and center position of the elongated holes (331) correspond one-to-one with the bolt holes opened on the top of the door leaf panel (A11).

5. The adjustable top water seal device for a submerged arc gate according to claim 4, characterized in that, The extension direction of the elongated hole (331) is consistent with the height direction of the door leaf panel (A11), so that the water seal mounting bracket (3) can still move up and down along the extension direction of the elongated hole (331) even when the mounting bracket fastener (8) is pre-tightened.

6. The adjustable top water seal device for a submerged arc gate according to claim 1, characterized in that, The P-type water seal (4) is located at the bottom of the water seal mounting bracket (3), and the sealing surface of the P-type water seal (4) faces the water-stop seat plate (B11) on the arch door groove embedded part (B1).

7. A method for installing an adjustable top water seal device for a submerged arc gate as described in any one of claims 1-6, characterized in that, Includes the following steps: S1, install the P-type water seal (4) and water seal pad (5) on the water seal mounting bracket (3) through the water seal pressure plate (6) and water seal fastener (7); S2, using mounting bracket fasteners (8) to pass through the elongated hole (331) of the water seal mounting bracket (3) and the bolt hole opened on the top of the door leaf panel (A11), the water seal mounting bracket (3) with the installed P-type water seal (4) is pressed against the top of the arc door leaf panel (A11) with a small pre-tightening force, and the water seal mounting bracket (3) is kept able to move up and down within the range of the elongated hole (331) under the action of external force; S3, with the arc gate leaf (A1) in the state of falling to the bottom sill, screw the adjusting bolt (1) into the threaded hole on the support positioning block (2) until the bottom of the adjusting bolt (1) is pressed against the top plate (32) on the water seal mounting bracket (3), continue to tighten the adjusting bolt (1) downwards, push the water seal mounting bracket (3) with the installed P-type water seal (4) downwards until the P-type water seal (4) contacts the water stop seat plate (B11) on the arc gate groove embedded part (B1) and maintains a suitable preload; S4, tighten the mounting bracket fasteners (8), lift the arc door leaf (A1) upwards a certain distance, and then perform on-site water sealing welding (9) at the corner where the bottom of the upper web plate (33) of the water seal mounting bracket (3) fits against the arc door leaf panel (A11).

8. The installation method according to claim 7, characterized in that, The smaller preload force mentioned in step S2 is a preload force that can both attach the water seal mounting bracket (3) to the top of the door leaf panel (A11) and allow the water seal mounting bracket (3) to move freely along the direction of the elongated hole (331) under the push of the adjusting bolt (1).

9. The installation method according to claim 7, characterized in that, The appropriate pre-compression amount mentioned in step S3 is: the compression amount that allows the arc gate leaf (A1) to completely fall to the bottom sill after the P-type water seal (4) contacts the water-stop seat plate (B11) while ensuring the reliability of the water seal.

10. The installation method according to claim 7, characterized in that, The on-site water sealing weld (9) mentioned in step S4 is a fillet weld used to seal the gap between the bottom of the web plate (33) of the water seal mounting bracket (3) and the arc door leaf panel (A11).

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