Initial rainwater collection system for waste incineration plant

Abstract

The utility model provides a garbage incineration plant initial rainwater collection system relates to rainwater processing's technical field, including rainwater well that rainwater pipe network intercommunication, rainwater well inside is provided with rainwater sensor, rainwater well is respectively connected with early stage rainwater collection pond and later stage rainwater collection pond, and rainwater well is provided with first electric valve on the pipeline that is connected with early stage rainwater collection pond, and rainwater well is provided with second electric valve on the pipeline that is connected with later stage rainwater collection pond, rainwater sensor is connected with time relay through signal, detects rainfall signal and transmission, time relay is respectively connected with first electric valve, second electric valve signal, according to preset time control valve action, first electric valve and second electric valve still have valve control box through signal connection, solved the technical problem that manual operation is not in time, and PLC needs additional pipeline, reached with existing rainwater pipe network, reduced manual operation, effectively collected and handled initial rainwater, reduced pollutant emission's technical effect.

Description

Technical Field

[0001] This utility model relates to the field of rainwater treatment device technology, and in particular to an initial rainwater collection system for a waste incineration plant. Background Technology

[0002] Waste-to-energy plants face rainwater issues during construction and initial operation. The transportation, loading, unloading, and crushing processes of waste within the plant can easily pollute roads, weighbridge areas, and transport ramps. Initial rainwater carries small amounts of dust and leachate leaked during transportation. If this initial rainwater is not collected and treated and is discharged into natural water bodies, it will harm the human environment and human health. Therefore, initial rainwater typically contains high concentrations of pollutants, and direct discharge would cause serious environmental pollution.

[0003] Currently, the initial rainwater collection systems of waste-to-energy plants are mainly divided into two categories: one is a manually operated system, which controls the direction of rainwater flow by manually opening and closing valves. For example, the valve of the initial rainwater collection pool is manually opened at the beginning of rainfall, and then manually switched to the later rainwater discharge path after collection is completed; the other is an automated system based on PLC (Programmable Logic Controller), in which the PLC controller controls the switching of electric valves according to preset logic to realize the diversion of initial rainwater and later rainwater.

[0004] Therefore, the existing technology has the following problems:

[0005] 1. Manual operation requires frequent back-and-forth trips, and in the event of sudden rainfall, the initial overflow of rainwater may occur due to untimely operation, and errors may easily occur in judging the collection time manually.

[0006] 2. Although PLC automation systems achieve automation, they require the installation of dedicated collection pipelines; furthermore, PLC controllers require professional technicians for programming, debugging, and troubleshooting, resulting in high costs and complex maintenance. Utility Model Content

[0007] The purpose of this utility model is to provide an initial rainwater collection system for waste incineration plants, so as to alleviate the technical problems of untimely manual operation and the need for additional pipeline laying for PLC in the existing technology.

[0008] This utility model provides an initial rainwater collection system for a waste incineration plant, comprising:

[0009] The rainwater well is connected to the rainwater pipe network. The rainwater well is equipped with a rainwater sensor. The rainwater well is connected to the pre-rainwater collection tank and the post-rainwater collection tank respectively. A first electric valve is installed on the pipe connecting the rainwater well and the pre-rainwater collection tank, and a second electric valve is installed on the pipe connecting the rainwater well and the post-rainwater collection tank.

[0010] The rain sensor is connected to a time relay via a signal to detect and transmit rainfall signals; the time relay is connected to the first electric valve and the second electric valve via signals to control the valve operation according to a preset time; the first electric valve and the second electric valve are also connected to a valve control box via signals.

[0011] Furthermore, the valve control box includes operation buttons and signal indicator lights for signal connection;

[0012] The operation button is connected to the first and second electric valves for manual switching, and the indicator light is used to display the switching status of the first and second electric valves.

[0013] Furthermore, both the first and second electric valves are flanged electric butterfly valves, with the valve bodies connected to the pipeline via mating flanges.

[0014] Furthermore, the rain sensor is a tipping bucket rain sensor, installed at the top opening of the rainwater well, fixed by a bracket with the sensing surface facing upwards.

[0015] Furthermore, the time relay is an energized delay type time relay, with its main body located inside the valve control box; the delay adjustment knob of the time relay is exposed on the valve control box panel.

[0016] Furthermore, the adjustment range of the time relay is 0 min to 60 min.

[0017] Furthermore, it also includes corrosion-resistant protective tubing used to cover the cables connecting the rain sensor, time relay, first electric valve, second electric valve, and valve control box.

[0018] Beneficial effects:

[0019] This utility model provides an initial rainwater collection system for a waste incineration plant, comprising: a rainwater well connected to a rainwater pipe network; a rainwater sensor installed inside the rainwater well; the rainwater well being connected to an initial rainwater collection tank and an initial rainwater collection tank; a first electric valve installed on the pipe connecting the rainwater well to the initial rainwater collection tank; and a second electric valve installed on the pipe connecting the rainwater well to the initial rainwater collection tank. The rainwater sensor is connected to a time relay via a signal connection for detecting and transmitting rainfall signals. The time relay is connected to the first and second electric valves via signals for controlling valve operation according to a preset time. The first and second electric valves are also connected to a valve control box via a signal connection.

[0020] By connecting rainwater wells to the existing rainwater pipe network, construction costs can be reduced by utilizing the existing network. Rainwater sensors are installed at the wellheads to detect rainfall in real time, ensuring a sensitive system response.

[0021] The valve switching is automatically controlled by a time relay to achieve initial and later rainwater diversion; the valve control box supports manual operation and status display, which is convenient and reliable.

[0022] This invention has a simple structure, low maintenance cost, and improves the efficiency and environmental friendliness of initial rainwater collection. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 A schematic diagram of the initial rainwater collection system for a waste incineration plant provided in this embodiment of the utility model;

[0025] Figure 2 A circuit diagram of the linkage control circuit for electric valves in the initial rainwater collection system of a waste incineration plant, provided for an embodiment of this utility model.

[0026] Figure 3 A flowchart of the initial rainwater collection system for a waste incineration plant provided in this embodiment of the present invention.

[0027] Icons: 1 - Rainwater well; 2 - Rainwater sensor; 3 - Initial rainwater collection tank; 4 - Subsequent rainwater collection tank; 5 - First electric valve; 6 - Second electric valve; 7 - Time relay; 8 - Valve control box; 801 - Operation button; 802 - Signal indicator light. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model 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 utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0033] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0035] The present invention provides an initial rainwater collection system for a waste incineration plant, comprising: a rainwater well 1 connected to a rainwater pipe network, a rainwater sensor 2 installed inside the rainwater well 1, an initial rainwater collection tank 3 and an initial rainwater collection tank 4 connected to the rainwater well 1, a first electric valve 5 installed on the pipe connecting the rainwater well 1 and the initial rainwater collection tank 3, and a second electric valve 6 installed on the pipe connecting the rainwater well 1 and the initial rainwater collection tank 4.

[0036] The rain sensor 2 is connected to a time relay 7 via a signal connection to detect and transmit rainfall signals. The time relay 7 is connected to the first electric valve 5 and the second electric valve 6 via signals to control the valve action according to a preset time. The first electric valve 5 and the second electric valve 6 are also connected to a valve control box 8 via signals.

[0037] Specifically, such as Figure 1 , Figure 2 As shown, rainwater well 1 is located on the main runoff path of the factory's rainwater pipe network and is connected to the main pipe via a reducing tee fitting to ensure rainwater inflow. The well body is constructed of reinforced concrete. Rainwater sensor 2 is fixed inside the well 0.3 meters below the top via an L-shaped stainless steel bracket, with the sensor probe facing upwards and arranged vertically. The initial rainwater collection tank 3 is located on one side of rainwater well 1 and is connected to the left branch pipe of the rainwater well via a steel pipe with a pipe length of 15 meters. The subsequent rainwater collection tank 4 is located on the other side of rainwater well 1 and is connected to the right branch pipe via a pipe of the same specification. The tops of both the initial rainwater collection tank 3 and the subsequent rainwater collection tank 4 are 1.2 meters below ground level, and level gauge interfaces are installed on the tank walls.

[0038] Both the first electric valve 5 and the second electric valve 6 are flange-type electric butterfly valves, which are installed on the horizontal sections of the branch pipes on both sides of the rainwater well 1.

[0039] The time relay 7 is installed inside the valve control box 8, and the cabinet is fixed to the factory wall next to the rainwater well 1. The rainwater sensor 2 is connected to the valve control box 8 via a shielded cable. The output of the time relay 7 is split into two paths via control cables to the actuators of the first electric valve 5 and the second electric valve 6.

[0040] The connection between rainwater well 1 and the pipe network retains the original drainage system of the plant area, eliminating the need to re-lay the main pipeline and reducing construction costs by more than 30%. At the same time, the space in rainwater well 1 is used to arrange sensors, reducing head loss. Rainwater sensor 2 is built into rainwater well 1, bringing the detection point close to the rainwater source. It can trigger a signal within 0.5 seconds at the beginning of rainfall, reducing interference from environmental debris compared to traditional open-air installation methods.

[0041] The parallel arrangement of the first electric valve 5 and the second electric valve 6, combined with the sequential control logic of the time relay 7, achieves a fully automatic process: "the first electric valve fully opens and the second electric valve fully closes after rainfall begins, and automatically switches after the timer ends," avoiding the mixing of initial rainwater with later discharge due to human error. In emergencies, the valve control box 8 can complete valve status switching within 10 seconds; status indicator lights display the valve opening and closing status in real time, reducing the error rate of manual inspections. Meanwhile, the control cable is sealed with a galvanized metal protective conduit.

[0042] In an embodiment of this utility model, the valve control box 8 includes an operation button 801 and a signal indicator light 802 connected to the signal.

[0043] The operation button 801 is signal-connected to the first electric valve 5 and the second electric valve 6 for manual switching, and the signal indicator 802 is used to display the switching status of the first electric valve 5 and the second electric valve 6.

[0044] Specifically, two operation buttons 801 are embedded on the front of the valve control box 8, one connected to the actuator control interface of the first electric valve 5 and the other connected to the actuator control interface of the second electric valve 6.

[0045] Two indicator lights 802 are also embedded on the front of the enclosure: the indicator light group consists of two circular LEDs, with the red light corresponding to the status of the first electric valve 5 (light indicates open) and the green light corresponding to the status of the second electric valve 6 (light indicates open). A cable inlet is located at the bottom of the valve control box 8.

[0046] The red or green indicator light 802 is synchronized with the valve status in real time, allowing personnel to clearly identify the valve's open / closed state from 5 meters away. Furthermore, the added valve control box 8 supports manual operation and status display, offering convenience and reliability.

[0047] In the embodiments of this utility model, the first electric valve 5 and the second electric valve 6 are both flange-type electric butterfly valves, and the valve bodies are connected to the pipeline through mating flanges.

[0048] Rain sensor 2 is a tipping bucket rain sensor, which is installed at the top opening of rainwater well 1, fixed by a bracket with the sensing surface facing upward.

[0049] The time relay 7 is a power-on delay type time relay, which is located inside the valve control box 8; the delay adjustment knob of the time relay 7 is exposed on the panel of the valve control box 8.

[0050] The adjustment range of time relay 7 is 0 min to 60 min.

[0051] It also includes a corrosion-resistant protective tube used to cover the signal connection cable between the rain sensor 2, time relay 7, first electric valve 5, second electric valve 6 and valve control box 8.

[0052] Specifically, both the first electric valve 5 and the second electric valve 6 are flanged electric butterfly valves, installed in parallel on the horizontal sections of the branch pipes on both sides of the rainwater well 1. The valve bodies are rigidly connected to the steel pipes via mating flanges (with rubber sealing rings);

[0053] The tipping bucket rain gauge is fixed at the center of the opening at the top of the rainwater well 1, with the sensing surface facing upwards and 50mm away from the edge of the well opening to avoid obstruction by the well wall. The sensor signal cable is introduced through a conduit pre-installed in the well wall, laid vertically along the well wall to the ground, and then turned to connect to the time relay 7 in the valve control box 8.

[0054] The power-on delay-type time relay is embedded inside the valve control box 8 and fixed to the back panel of the box via a guide rail. Its delay adjustment knob (scale range 0min to 60min) is exposed through the box panel. The relay input is connected to the rainwater sensor 2 via a cable, and the output is split into two paths connected to the actuator control lines of the first electric valve 5 and the second electric valve 6 via terminal blocks. The 0min to 60min adjustment range covers more than 95% of the duration of initial rainwater pollution, avoiding insufficient or excessive collection problems caused by fixed time settings.

[0055] The signal cable from rain sensor 2 to valve control box 8 and the control line from time relay 7 to the two electric valves are all covered with anti-corrosion protective pipes (epoxy resin coated steel pipes).

[0056] Based on the above embodiments, such as Figure 3 As shown, the specific working process of the initial rainwater collection system for waste incineration plants provided by this utility model is as follows:

[0057] When rainfall begins, rainwater enters the rainwater well 1 through the rainwater pipe network. The rainwater sensor 2 detects the impact of raindrops and converts the rainfall signal into an electrical signal, which is transmitted via cable to the time relay 7 in the valve control box 8. Upon receiving the signal, the time relay 7 immediately activates the power-on delay function, starting the timer according to the preset time. At this time, the first electric valve 5 (initial rainwater valve) remains open, and the second electric valve 6 (later rainwater valve) remains closed. The contaminated initial rainwater flows into the rainwater well 1 through the rainwater pipe network, and then enters the initial rainwater collection tank 3 through the left branch pipe and the first electric valve 5, achieving targeted collection of high-concentration pollutants.

[0058] When the time relay 7 reaches the preset initial rainwater collection time, its internal contacts activate, sending a signal to the actuator of the first electric valve 5 to close the valve; simultaneously, it sends an opening command to the second electric valve 6, allowing subsequent rainwater to flow into the subsequent rainwater collection tank 4 via the right branch pipe and the second electric valve 6. At this time, the signal indicator light 802 on the valve control box 8 switches states: the red light is off (indicating that the first electric valve 5 is closed), and the green light is on (indicating that the second electric valve 6 is open).

[0059] After the rainfall stops, the rain sensor 2 stops sending signals, and the time relay 7 triggers the rain stop reset timer. After the timer expires, the time relay 7 sends a signal again to open the first electric valve 5 and close the second electric valve 6, and the system returns to its initial state (red light on, green light off), waiting for the next rainfall to be collected. If emergency intervention is required, the operator can manually switch the valve status using the operation button 801 on the valve control box 8.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A system for collecting initial rainwater from a waste incineration plant, characterized in that, include: A rainwater well (1) connected to a rainwater pipe network is provided with a rainwater sensor (2) inside the rainwater well (1). The rainwater well (1) is connected to an early rainwater collection tank (3) and a later rainwater collection tank (4). A first electric valve (5) is provided on the pipe connecting the rainwater well (1) and the early rainwater collection tank (3). A second electric valve (6) is provided on the pipe connecting the rainwater well (1) and the later rainwater collection tank (4). The rain sensor (2) is connected to a time relay (7) via a signal connection to detect and transmit rainfall signals; the time relay (7) is connected to the first electric valve (5) and the second electric valve (6) via a signal connection to control the valve action according to a preset time; the first electric valve (5) and the second electric valve (6) are also connected to a valve control box (8) via a signal connection.

2. The initial rainwater collection system for a waste incineration plant according to claim 1, characterized in that, The valve control box (8) includes an operation button (801) and a signal indicator light (802) connected to the signal. The operation button (801) is signal-connected to the first electric valve (5) and the second electric valve (6) for manual switching, and the signal indicator (802) is used to display the switching status of the first electric valve (5) and the second electric valve (6).

3. The initial rainwater collection system for a waste incineration plant according to claim 1, characterized in that, Both the first electric valve (5) and the second electric valve (6) are flanged electric butterfly valves, and the valve bodies are connected to the pipeline through mating flanges.

4. The initial rainwater collection system for a waste incineration plant according to claim 1, characterized in that, The rain sensor (2) is a tipping bucket rain sensor, which is installed at the top opening of the rainwater well (1), fixed by a bracket and with the sensing surface facing upward.

5. The initial rainwater collection system for a waste incineration plant according to claim 1, characterized in that, The time relay (7) is a power-on delay type time relay, which is located inside the valve control box (8); the delay adjustment knob of the time relay (7) is exposed on the panel of the valve control box (8).

6. The initial rainwater collection system for a waste incineration plant according to claim 5, characterized in that, The adjustment range of the time relay (7) is 0 min to 60 min.

7. The initial rainwater collection system for a waste incineration plant according to claim 1, characterized in that, It also includes a corrosion-resistant protective tube for covering the signal connection cable between the rain sensor (2), time relay (7), first electric valve (5), second electric valve (6) and valve control box (8).

Images