Wall-attached gate groove and trash rack integrated structure

Abstract

The invention discloses a wall-attached gate groove and trash rack integrated structure which comprises a bulkhead gate, a gate groove assembly and a trash rack, the gate groove assembly is fixed to the inner wall of a pump station water inlet pool and comprises two vertical supporting pieces arranged at intervals, and the trash rack is fixedly connected to the upstream faces of the two vertical supporting pieces; the bulkhead gate is arranged in a limiting channel formed between the two vertical supporting pieces in a lifting mode. The width of the bulkhead gate and the trash rack can be reduced, the equipment manufacturing cost is reduced, durability is achieved, frequent replacement of the gate and the trash rack in the overhaul period and the operation period is avoided, and operation management is facilitated.

Description

Technical Field

[0001] This invention relates to the field of pump station engineering technology, specifically to an integrated structure of a wall-mounted gate slot and a trash rack. Background Technology

[0002] In pump station intake projects, maintenance gates and trash racks are typically installed to ensure safe pump operation and equipment maintenance. The intake pool civil structure requires the pre-construction of double-sided pier walls, with through-type gate slots installed on opposite sides of the two pier walls to house the corresponding maintenance gates or trash racks.

[0003] In the construction of small and medium-sized pumping stations, to save investment and improve the utilization of vertical space, the inlet often has only one gate slot. This gate slot serves as both a maintenance gate slot and a trash rack slot. During normal operation of the pumping station, a trash rack is placed in this gate slot. Its main function is to prevent branches, weeds, garbage, and other debris from entering the pump flow channel, protecting critical components such as the pump impeller from damage or entanglement, and ensuring the safe and efficient operation of the pump. When the pumping station needs maintenance (such as maintenance of the pumps or pipelines), lifting equipment must be used to lift and remove the trash rack from this shared gate slot, and then a maintenance gate is placed in its place. After the maintenance gate is lowered, it cuts off the water supply and provides a working environment for the maintenance area. After the maintenance is completed, the maintenance gate must be lifted out again and the trash rack reinstalled.

[0004] Because the piers are constructed on the opposite side walls of the intake pool, the width of the gate slot is affected by the distance between the piers. This results in both the trash rack and the maintenance gate having a width similar to the width of the intake pool, significantly increasing their weight and raising equipment manufacturing costs. Furthermore, the trash rack needs to be placed in place for extended periods during pump station operation, while maintenance requires lifting it out before installing the maintenance gate. The lifting operation not only increases operating and management costs and can easily damage the gate slot, but also poses certain safety hazards, causing inconvenience to operation and management. Summary of the Invention

[0005] The purpose of this invention is to provide an integrated structure of a wall-mounted gate slot and a trash rack, which reduces the width of the maintenance gate and the trash rack, lowers the equipment manufacturing cost, and avoids frequent replacement of the gate and trash rack during maintenance and operation, thus facilitating operation and management.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is: an integrated structure of a wall-mounted gate slot and a trash rack, comprising a maintenance gate, a gate slot assembly, and a trash rack. The gate slot assembly is fixed to the inner wall of the pump station intake pool and includes two spaced vertical support members. The trash rack is fixedly connected to the water-facing surfaces of the two vertical support members. The maintenance gate is vertically and flexibly positioned within the limiting channel formed between the two vertical support members.

[0007] A further improvement of the present invention is that the gate slot assembly further includes a horizontal support member, which connects the bottom of two vertical support members. The vertical support member and the horizontal support member are fixed to the inner wall of the water inlet pool by pre-embedded parts. The vertical support member and the horizontal support member together constitute a gate slot structure for guiding the maintenance gate.

[0008] A further improvement of the present invention is that both the vertical support and the horizontal support are channel steel, which are fixed to the inner wall of the water inlet pool by pre-embedded bolts.

[0009] A further improvement of the present invention is that the first flange of the vertical support forms a water-facing surface, the trash rack is fixed to the first flange by fasteners, and the second flange of the vertical support is connected to the inner wall of the inlet pool.

[0010] A further improvement of the present invention is that the slots of the two vertical support members are arranged opposite to each other.

[0011] A further improvement of the present invention is that the maintenance gate is a planar gate with a hoist connected to its top.

[0012] A further improvement of the present invention is that a pump station inlet is connected to the inner wall of the outlet side of the water inlet pool, and the pump station inlet leads to the water pump unit.

[0013] A further improvement of the present invention is that the trash rack is located upstream of the water-facing side of the maintenance gate, and its projected area on the plane is larger than the flow section of the pump station inlet, and completely covers the section.

[0014] A further improvement of the present invention is that the distance between the two vertical support members is less than the width of the inlet pool, and the distance is not less than the diameter of the pump station inlet.

[0015] A further improvement of the present invention is that the diameter of the pump station inlet is 1.6m, the height of the vertical support is 2m and the thickness is 0.28m, the distance between the two vertical supports is 2m, and the width of the trash rack is 2.17m, the height is 2m and the thickness is 0.16m.

[0016] The beneficial effects of this invention are as follows: This invention fixes vertical supports to the inner wall of one side of the inlet pool, replacing the piers on opposite sides of the inlet pool in the prior art. The width of the two vertical supports can be set as needed, thereby reducing the width of the maintenance gate and trash rack, reducing equipment manufacturing costs. Furthermore, the trash rack is fixed to the water-facing side of the vertical supports, eliminating the need to share a gate slot with the maintenance gate, avoiding frequent replacement of the gate and trash rack during maintenance and operation, and facilitating operation and management.

[0017] This invention connects the bottoms of two vertical supports with a horizontal support to form a stable gate slot frame. The anchoring reliability of the overall structure on one side of the pool wall is ensured by the pre-embedded parts. It is suitable for the compact space of small and medium-sized pump stations, replaces the gate slot function of traditional pier walls, and effectively reduces civil engineering costs.

[0018] In this invention, channel steel, as a standard profile, is easy to procure and process. The pre-embedded bolt connection simplifies the on-site installation process. The pre-embedded fixing method enhances the anchoring strength of the overall structure on the water inlet pool wall, improving the convenience of construction. Channel steel provides high structural rigidity, low cost, and corrosion resistance, making it suitable for water conservancy engineering environments.

[0019] This invention utilizes channel steel flanges to install trash racks, eliminating the need for additional support frames, further reducing structural weight and manufacturing costs. The second flange is installed against the wall to ensure that vertical loads are effectively transferred to the pool wall, improving anti-overturning capability.

[0020] In this invention, the slots arranged opposite to each other allow the distance between the webs of the two vertical support members to only meet the gate thickness, significantly reducing the width of the maintenance gate. The width of the trash rack only needs to cover the pipe flow surface, avoiding the material waste of traditional full-width racks. Attached Figure Description

[0021] Figure 1 This is a schematic front view cross-sectional view of the structure of the present invention.

[0022] Figure 2 This is a partially enlarged schematic diagram of the main cross-sectional view of the structure of the present invention.

[0023] Figure 3 This is a top-view cross-sectional diagram of the structure of the present invention.

[0024] Figure 4 This is a top cross-sectional view of the trash rack structure of the present invention.

[0025] Figure 5 This is a schematic diagram of the elevation of the trash rack of the present invention.

[0026] In the diagram, 1-maintenance gate, 2-trash rack, 3-intake pool, 4-vertical support, 5-horizontal support, 6-first flange, 7-second flange, 8-screw-type gate hoist, 9-pump station inlet. Detailed Implementation

[0027] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0028] Example 1: Combination Figures 1-5It is known that an integrated structure of a wall-mounted gate slot and trash rack includes a maintenance gate 1, a gate slot assembly and a trash rack 2. The gate slot assembly is fixed to the inner wall of the pump station intake pool 3 and includes two spaced vertical support members 4. The trash rack 2 is fixedly connected to the water-facing surface (i.e. the surface facing the incoming water direction) of the two vertical support members 4. The maintenance gate 1 is raised and lowered within the limiting channel formed between the two vertical support members 4.

[0029] The gate slot assembly also includes a horizontal support member 5, which connects the bottom of the two vertical supports 4 to form a stable frame foundation and serves as a bottom support limiting surface when the maintenance gate 1 is lowered. The vertical supports 4 and the horizontal supports 5 are fixed to the inner wall of the intake pool 3 by embedded parts (such as embedded bolts embedded in the concrete structure of the intake pool 3). The vertical supports 4 and the horizontal supports 5 together constitute the gate slot structure for guiding the maintenance gate 1.

[0030] In this embodiment, both the vertical support 4 and the horizontal support 5 are channel steel, which are fixed to the inner wall of the inlet pool 3 by pre-embedded bolts. Specifically, the first flange 6 of the vertical support 4 forms the water-facing surface, and the trash rack 2 is fixed to the first flange 6 by multiple sets of fasteners (such as stainless steel bolts, evenly distributed along the height direction). The second flange 7 of the vertical support 4 is connected to the inner wall of the inlet pool 3 by pre-embedded parts.

[0031] The channel steel used in this embodiment is made of corrosion-resistant steel (such as Q235B or Q355B, stainless steel), and is subjected to strict anti-corrosion treatment (such as hot-dip galvanizing, spraying epoxy coal tar paint, polyurethane paint). It is fixed by pre-embedded bolts that have been treated with hot-dip galvanizing or spraying heavy anti-corrosion coating (such as epoxy coal tar paint, polyurethane paint).

[0032] Preferably, the joint surface between the second flange 7 and the inner wall of the inlet pool 3 is filled with epoxy mortar or other underwater-specific sealing materials to ensure a tight connection and prevent water from entering the gap and thus prevent gap corrosion.

[0033] The slots of the two vertical support members 4 are arranged opposite each other. This arrangement allows the second flanges 7 of the two channel steels to be installed close to the inner wall of the inlet pool, while the first flanges 6 form a plane for installing the trash rack 2 outwards. During the raising and lowering of the maintenance gate 1, the webs of the two vertical support members 4 on both sides effectively guide the gate to rise and fall in a straight line, preventing the gate from jamming or tilting.

[0034] The maintenance gate 1 is a flat gate (such as a cast iron gate or a steel gate). Guide sliders or guide wheels are provided between its two side edges and the web of the vertical support 4 to ensure smooth and stable raising and lowering of the gate and effective water stoppage. A hoist 8 (preferably a screw-type hoist) is connected to its top. When using a screw-type hoist, it is fixedly installed on the working platform or support structure at the top of the intake pool 3. Its screw passes through a pre-reserved hole in the platform, and its lower end is reliably connected to the top of the maintenance gate 1 via a lifting lug or flange. By rotating the screw, the maintenance gate 1 is driven to move up and down within the gate slot, realizing the opening and closing control of the pump station's water intake.

[0035] To ensure the gate stops after opening to a predetermined safe height and to prevent accidents such as screw bending, hoist damage, or gate derailment due to excessive lifting, an opening limit device is installed at the top of the gate 1 (or the working platform or support structure). This opening limit device is a conventional limit device in the prior art used to ensure the gate stops after opening to a predetermined safe height, and this invention does not involve any improvement thereto. It generally includes a mechanical limit block or an electrical limit switch. If it is a mechanical limit block, when the maintenance gate 1 is raised to the fully open position, its top contacts the mechanical limit block, physically preventing the gate from rising further. The mechanical limit block is usually made of wear-resistant steel, and its position can be precisely adjusted and fixed according to the gate's fully open height. If it is an electrical limit switch, it is linked to the electrical control system of the screw-type hoist 8. The electrical limit switch (such as a limit switch or proximity switch) is also set at the corresponding position when the gate reaches the fully open height. When the gate rises and touches or approaches the electrical limit switch, the hoist 8 is stopped.

[0036] The screw-type gate hoist 8 includes a drive motor, a reduction gear, a load-bearing nut, and a lifting screw. The lower end of the lifting screw is securely connected to the top of the gate 1 via a connecting device (such as a flange or lifting head). The base of the gate hoist 8 is fixedly mounted on a sturdy support structure (such as a concrete platform or steel beam) on the top or side wall of the intake pool 3. The control system (manual or electric) of the gate hoist 8 should facilitate operator monitoring and control of the gate position.

[0037] The inner wall of the outlet side of the inlet pool 3 is connected to the pump station inlet 9, which leads to the pump unit. The water flow direction is as follows: first, it flows through the trash rack 2, then through the area where the maintenance gate 1 is located (when the gate is raised), and finally enters the pump station inlet 9.

[0038] The trash rack 2 is located upstream of the water-facing side of the maintenance gate 1. Its projected area on the plane is larger than the flow cross-section of the pump station inlet 9 and completely covers the cross-section. This ensures that all water entering the pump station inlet 9 is filtered by the trash rack 2, effectively intercepting floating debris, aquatic plants, and other impurities. The trash rack used in this embodiment is made of corrosion-resistant steel (such as Q235B or Q355B, stainless steel) and is treated with strict anti-corrosion measures (such as hot-dip galvanizing, spraying with epoxy coal tar paint, or polyurethane paint). It is fixed with bolts that have been treated with hot-dip galvanizing or heavy-duty anti-corrosion coatings (such as epoxy coal tar paint or polyurethane paint).

[0039] The distance between the two vertical support members 4 is less than the width of the inlet pool 3 and not less than the diameter of the pump station inlet 9. This reduces the number of maintenance gates 1 and trash racks while ensuring that the maintenance gates 1 can completely cut off the water flow to the inlet pipe 9, thus meeting the water blocking requirements when maintaining the water pump unit.

[0040] In a specific dimensional configuration of this embodiment: the net width of the inlet pool is 5m, and the diameter of the pump station inlet 9 is 1.6m. Therefore, to meet the water blocking requirements and consider the installation clearance, the distance between the two vertical support members 4 is set to 2m. The height of the vertical support member 4 is 2m, covering the inlet area of ​​the water inlet pipe and providing sufficient gate guide length. The thickness (referring to the height of the channel steel web, i.e., the nominal height of the channel steel model, for example, the web height of 28a channel steel is 280mm) is 0.28m.

[0041] The width of the trash rack 2 is 2.17m, slightly larger than the distance between the outer flanges (first flange 6) of the two vertical support members 4 (approximately 2m + 2 * channel steel flange width; for example, if the flange width of 28a channel steel is 82mm, then the distance between the outer flanges is approximately 2m + 2 * 0.082m = 2.164m), ensuring complete coverage and secure installation on the two vertical support members 4. The height of the trash rack 2 is 2m, consistent with the height of the vertical support members 4, forming a continuous trash-blocking surface. The thickness (referring to the thickness of the trash rack's bar structure perpendicular to the water flow direction) is 0.16m. The trash rack 2 is welded from spaced bars (e.g., flat or round steel, approximately 10mm in diameter / thickness) and a frame. The bar spacing is determined according to the size of the debris to be intercepted, for example, 50mm. The frame of the trash rack 2 has screw holes, which are used to fix it to the two vertical support members 4 and the horizontal support member 5 by multiple bolts.

[0042] The working principle of the integrated structure of wall-mounted gate slot and trash rack provided by the present invention is as follows: During normal operation, the maintenance gate 1 is raised to a certain position by the hoist 8, without obstructing the water flow channel. Water flows in from the upstream of the inlet pool 3, first passing through the trash rack 2 fixedly installed on the water-facing side (first flange 6) of the two vertical support members 4. The trash rack 2 intercepts floating objects, branches, aquatic plants, and other debris in the water, preventing them from entering the subsequent flow channel. The filtered water flows smoothly through the area where the maintenance gate 1 is located (at this time, the area is unobstructed), enters the pump station inlet 9, and is finally pumped away by the water pump unit.

[0043] When maintenance is required on the pump station inlet 9 or the pump unit, operate the hoist 8 to smoothly lower the maintenance gate 1 along the guide groove formed by the two vertical supports 4 (the limiting channel formed by the inner side of the channel steel web) until its bottom rests on the horizontal support 5. At this time, the maintenance gate 1 completely cuts off the water flow, preventing water from continuing to enter the pump station inlet 9. Maintenance personnel can then safely drain the water in the inlet pipe 9 and enter through the maintenance passage on the pump unit side to carry out the corresponding maintenance work. After the maintenance is completed, raise the maintenance gate 1 to the open position to restore water flow.

[0044] In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, 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. Any equivalent structural or procedural transformations made using the content of this specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of this invention.

Claims

1. An integrated structure of a wall-mounted gate slot and a trash rack, characterized in that: It includes a maintenance gate (1), a gate slot assembly and a trash rack (2). The gate slot assembly is fixed on the inner wall of the pump station intake pool (3) and includes two spaced vertical support members (4). The trash rack (2) is fixedly connected to the water-facing surface of the two vertical support members (4). The maintenance gate (1) is raised and lowered within the limiting channel formed between the two vertical support members (4).

2. The integrated structure of a wall-mounted gate slot and a trash rack according to claim 1, characterized in that: The gate slot assembly also includes a horizontal support (5) which connects to the bottom of two vertical support (4). The vertical support (4) and the horizontal support (5) are fixed to the inner wall of the water inlet pool (3) by pre-embedded parts. The vertical support (4) and the horizontal support (5) together constitute a gate slot structure for guiding the maintenance gate (1).

3. The integrated structure of a wall-mounted gate slot and a trash rack according to claim 2, characterized in that: The vertical support (4) and the horizontal support (5) are both channel steel, which are fixed to the inner wall of the water inlet pool (3) by pre-embedded bolts.

4. The integrated structure of a wall-mounted gate slot and a trash rack according to claim 3, characterized in that: The first flange (6) of the vertical support member (4) forms the water-facing surface, and the trash rack (2) is fixed to the first flange (6) by fasteners. The second flange (7) of the vertical support member (4) is connected to the inner wall of the inlet pool (3).

5. The integrated structure of a wall-mounted gate slot and a trash rack according to claim 3 or 4, characterized in that: The slots of the two vertical support members (4) are set opposite to each other.

6. The integrated structure of a wall-mounted gate slot and a trash rack according to claim 1, characterized in that: The maintenance gate (1) is a planar gate with a hoist (8) connected to its top.

7. The integrated structure of a wall-mounted gate slot and a trash rack according to claim 1, characterized in that: The inner wall of the outlet side of the water inlet pool (3) is connected to the pump station inlet (9), which leads to the water pump unit.

8. The integrated structure of a wall-mounted gate slot and a trash rack according to claim 1, characterized in that: The trash rack (2) is located upstream of the water-facing side of the maintenance gate (1), and its projected area on the plane is larger than the flow section of the pump station inlet (9) and completely covers the section.

9. The integrated structure of a wall-mounted gate slot and a trash rack according to claim 7, characterized in that: The distance between the two vertical support members (4) is less than the width of the water inlet pool (3), and the distance is not less than the diameter of the pump station inlet (9).

10. An integrated structure of a wall-mounted gate slot and a trash rack according to claim 7 or 9, characterized in that: The diameter of the pump station inlet (9) is 1.6m, the height of the vertical support (4) is 2m and the thickness is 0.28m, the distance between the two vertical support (4) is 2m, and the width of the trash rack (2) is 2.17m, the height is 2m and the thickness is 0.16m.

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