Automatic diversion switching drainage structure for initial rainwater collection pool of waste incineration power plant
By designing an automatic diversion system that utilizes the height difference of drainage ditches, the problem of manual operation and maintenance of the initial rainwater collection pool of waste incineration power plants is solved, and the automatic diversion of early rainwater and later rainwater is achieved, reducing operating costs and energy consumption.
Patent Information
- Application Number
- CN202421393074.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-18
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-06-18
AI Technical Summary
The initial rainwater collection pool control method of existing waste incineration power plants requires manual operation by operators, and the gate valve is prone to rust and is complex in maintenance.
By designing the initial rainwater drainage ditch, the collection pool water inlet drainage ditch, the collection pool drainage ditch and the early rainwater collection ditch, the height difference of the drainage ditch is used to achieve automatic diversion of early rainwater and later clean rainwater.
The automatic divergence of early rainwater and later clean rainwater has been achieved, reducing energy consumption and operational expenses, and reducing equipment maintenance needs.
Smart Images
Figure CN222525481U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an automatic diversion switching drainage structure for an initial rainwater collection pool of a garbage incineration power plant. Background Art
[0002] In a waste incineration power plant, the initial rainwater generated in the roads, transportation ramps, weighbridges and fly ash transportation roads that are prone to pollution caused by garbage trucks in the plant area is polluted sewage and needs to be collected and treated in an initial rainwater collection pool 4.
[0003] According to GB / T50483-2019 "Environmental Protection Engineering Design Standards for Chemical Construction Projects", initial rainwater refers to the fresh rainwater, which is the precipitation in the first 10 to 20 minutes of a rainfall process. According to the draft for comments on the technical specifications for the incineration and energy utilization of domestic waste, waste incineration plants should set up initial rainwater collection pools, and their effective volume should be calculated based on the 10mm water accumulation in the garbage truck conveying channel area.
[0004] At present, the common control method of the initial rainwater collection pool is to install an electric valve / gate on the water inlet pipe of the initial rainwater collection pool, which is usually open; at the same time, an electric valve / gate is installed on the external rainwater pipe, which is usually closed. When the liquid level of the initial rainwater collection pool reaches the highest level, the electric valve / gate of the water inlet pipe of the initial rainwater collection pool is automatically closed, and the electric valve / gate of the external rainwater pipe is opened at the same time, so that the rainwater can be discharged to the municipal rainwater pipe.
[0005] The conventional control method of the initial rainwater collection pool has high requirements for the operators, who need to control the electric valve / gate action according to the actual rainfall conditions. In addition, there is also the problem that the gate valve is easy to rust and there are many locations that need maintenance. Utility Model Content
[0006] The purpose of the utility model is to overcome the above-mentioned deficiencies in the prior art and to provide a reasonably designed automatic diversion and switching drainage structure for the initial rainwater collection pool of a waste incineration power plant, which utilizes the height difference of the drainage ditch to achieve automatic diversion of initial rainwater and later clean rainwater.
[0007] The technical solution adopted by the utility model to solve the above-mentioned problems is: an automatic diversion and switching drainage structure of an initial rainwater collection pool in a waste incineration power plant, comprising an initial rainwater drainage ditch, a collection pool water inlet drainage ditch, a collection pool external drainage ditch and an initial rainwater collection pool; the outlet of the collection pool water inlet drainage ditch is connected to the initial rainwater collection pool; the outlet of the initial rainwater drainage ditch is respectively connected to the inlet of the collection pool water inlet drainage ditch and the inlet of the collection pool external drainage ditch; it is characterized in that: the bottom of the external drainage ditch of the collection pool is higher than the bottom of the collection pool water inlet drainage ditch and the bottom of the initial rainwater drainage ditch.
[0008] The side wall of the initial rainwater collection pool of the utility model is provided with a water inlet, and the outlet of the water inlet drainage ditch of the collection pool is connected with the water inlet.
[0009] The outlet of the drainage ditch outside the collection pool of the utility model is connected with the municipal rainwater pipeline.
[0010] The utility model is provided with a slope with an angle of 45 degrees at the connection between the outlet of the initial rainwater drainage ditch and the inlet of the drainage ditch outside the collection pool.
[0011] The slope angle described in the utility model is 45°.
[0012] Compared with the prior art, the utility model has the following advantages and effects:
[0013] 1. Low investment cost and no equipment maintenance required.
[0014] 2. The construction of drainage ditch is simple and the construction period is short.
[0015] 3. Automatic diversion of initial rainwater and later clean rainwater can be achieved without the need for operator operation.
[0016] 4. Reduce energy consumption and reduce operating expenses. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the planar structure of an embodiment of the utility model.
[0018] Figure 2 It is a schematic diagram of the partial cross-sectional structure of an embodiment of the utility model. DETAILED DESCRIPTION
[0019] The present invention will be further described in detail below with reference to the accompanying drawings and through examples. The following examples are provided to explain the present invention, but the present invention is not limited to the following examples.
[0020] The embodiment of the utility model comprises an initial rainwater drainage ditch 1, a collection pool water inlet drainage ditch 2, a collection pool external drainage ditch 3 and an initial rainwater collection pool 4.
[0021] The effective volume of the initial rainwater collection pool 4 must meet the volume of initial rainwater required in the project environmental impact report. A water inlet 41 is provided on the side wall of the initial rainwater collection pool 4, and the outlet of the collection pool water inlet drainage ditch 2 is connected to the water inlet 41, and then the outlet of the collection pool water inlet drainage ditch 2 is connected to the initial rainwater collection pool 4.
[0022] The outlet of the initial rainwater drainage ditch 1 is connected to the inlet of the collection pool inlet drainage ditch 2 and the inlet of the collection pool external drainage ditch 3 respectively. At the same time, the bottom of the collection pool external drainage ditch 3 is higher than the bottom of the collection pool inlet drainage ditch 2 and the bottom of the initial rainwater drainage ditch 1. The specific height difference is calculated as follows: The drainage ditch is calculated according to the open channel uniform flow: , where Q: the amount of initial rain required in the project environmental impact report; A: the cross-sectional area of water flow; C: Xie Cai coefficient: , n: cement slurry surface channel roughness coefficient is 0.013; R: hydraulic radius; i: bottom slope, from which the height difference of the drainage ditch at the diversion point can be calculated. The outlet of the drainage ditch 3 outside the collection pool is connected to the municipal rainwater pipe. A slope 5 with an angle of 45° is set at the connection between the outlet of the initial rainwater drainage ditch 1 and the inlet of the drainage ditch 3 outside the collection pool to improve the flow state under overflow and try to avoid turbulence to affect the drainage flow.
[0023] At the beginning of rainfall, rainwater flows to the collection pool inlet drainage ditch 2 through the initial rainwater drainage ditch 1. Since the bottom of the collection pool external drainage ditch 3 is higher than the bottom of the collection pool inlet drainage ditch 2, the rainwater flows into the initial rainwater collection pool 4. As the rainfall continues, when the initial rainwater collection pool 4 is full, due to the pressure difference between the inside and outside, the rainwater will no longer enter the initial rainwater collection pool 4. The subsequent rainwater flows to the municipal rainwater pipeline through the collection pool external drainage ditch 3, realizing the automatic diversion of the initial rainwater and the later clean rainwater.
[0024] In addition, it should be noted that the shapes and names of the parts and components of the specific embodiments described in this specification may be different, and the above content described in this specification is only an example of the structure of the utility model. All equivalent changes or simple changes made based on the structure, features and principles described in the patent concept of the utility model are included in the protection scope of the utility model patent. Technicians in the technical field of the utility model can make various modifications or supplements to the specific embodiments described or replace them in a similar manner, as long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, they should all fall within the protection scope of the utility model.
Claims
1. An automatic diversion and switching drainage structure for an initial rainwater collection pool of a waste incineration power plant, comprising an initial rainwater drainage ditch, a collection pool inlet drainage ditch, a collection pool external drainage ditch and an initial rainwater collection pool; the outlet of the collection pool inlet drainage ditch is connected to the initial rainwater collection pool; the outlet of the initial rainwater drainage ditch is respectively connected to the inlet of the collection pool inlet drainage ditch and the inlet of the collection pool external drainage ditch; characterized in that: The bottom of the drainage ditch outside the collection pool is higher than the bottom of the drainage ditch for water inlet into the collection pool and the bottom of the drainage ditch for initial rainwater.
2. The automatic diversion and switching drainage structure of the initial rainwater collection pool of a waste incineration power plant according to claim 1 is characterized by: A water inlet is provided on the side wall of the initial rainwater collection pool, and the outlet of the water inlet drainage ditch of the collection pool is connected to the water inlet.
3. The automatic diversion and switching drainage structure of the initial rainwater collection pool of a waste incineration power plant according to claim 1 is characterized by: The outlet of the drainage ditch outside the collection pool is connected to the municipal rainwater pipeline.
4. The automatic diversion and switching drainage structure of the initial rainwater collection pool of a waste incineration power plant according to claim 1 is characterized by: A slope with an angle of 45° is provided at the connection between the outlet of the initial rainwater drainage ditch and the inlet of the drainage ditch outside the collection pool.