CN102493547A - Automatic dredging system for underground storage-capacity-regulating pipe culvert - Google Patents

Abstract

The invention discloses an automatic dredging system for underground regulating and storing pipe culverts, which comprises a slidable dredging device arranged in the regulating and storing pipe culvert, and the end of the regulating and storing pipe culvert is provided with a silt discharge pool and a sewage discharge pump; the automatic dredging system also includes an aeration system; the aeration system includes an exhaust pipe arranged at the bottom of the regulating and storage pipe culvert, and a plurality of aeration holes are opened on the lower side of the exhaust pipe. The automatic dredging system of the present invention may also include a water drop energy storage device. The automatic dredging system of the invention has the beneficial effects of simple structure, energy saving, high degree of automation, good dredging effect and the like.

Description

Automatic dredging system for underground storage pipes and culverts

technical field

The invention relates to the technical field of environmental protection, in particular to an automatic dredging system for underground regulation and storage pipes and culverts used for urban flood control.

Background technique

Due to the lag in the planning and construction of urban flood control and drainage systems in my country, the problem of waterlogging in the rainy season is common in large and medium-sized cities in my country. When the waterlogging phenomenon caused by short-term heavy rainfall occurs, the surface runoff carries a large amount of pollutants into the urban water body, resulting in serious pollution of the water quality, bringing huge economic losses and serious ecological damage to the city.

In order to solve the problem of urban waterlogging, the usual idea is to expand or build new drainage pipe networks and rainwater treatment plants. However, restricted by many factors such as project land, roads, buildings and underground pipelines, it is very difficult to expand or build new pipeline networks and rainwater treatment plants. In view of the large population, small amount of land, and complex layout of buildings, streets, and pipelines in my country's large and medium-sized cities, through efficient use of deep underground space, it adopts a system that can increase the storage capacity, has little impact on the environment, and can be distributed and centralized. The characteristic regulation, storage, pipe and culvert technology has become a good choice for large and medium-sized cities to solve urban flood control and non-point source pollution in rainy days.

Deep underground regulation and storage pipes and culverts are generally built in the lower part of urban buildings and underground rail transit, and are generally located in the range of 20-50 meters below the ground. The particulate pollutants carried by rainwater or rainwater will deposit in the underground regulation and storage pipes and culverts during the regulation and storage period, reducing the effective regulation and storage volume of the regulation and storage pipes and culverts, resulting in silting of the regulation and storage pipes and culverts. These factors limit the popularization and application of deep underground regulation and storage pipe culverts.

Therefore, those skilled in the art are devoting themselves to developing an automatic dredging system for underground storage pipes and culverts to solve the above problems.

Contents of the invention

In view of the above-mentioned defects in the prior art, the technical problem to be solved by the present invention is to provide an automatic dredging system for underground storage pipes and culverts to automatically clean up the silt deposits in the underground storage pipes and culverts.

In order to achieve the above object, the present invention provides an automatic dredging system for the underground regulation and storage pipe culvert, which includes a slidable dredging device installed in the regulation and storage pipe culvert, and the end of the regulation and storage pipe culvert is provided with Silt discharge tank and sewage pump; the automatic desilting system also includes an aeration system; the aeration system includes an exhaust pipe arranged at the bottom of the regulating and storage pipe culvert, and the lower side of the exhaust pipe is provided with multiple aeration holes.

Preferably, the exhaust pipe is communicated with the gas source and exhausted into the regulation and storage pipe culvert through the aeration hole so that the sediment in the regulation and storage pipe culvert is suspended in the regulation and storage pipe culvert middle.

The invention adds an aeration system to the automatic dredging system to suspend the sediment deposited at the bottom of the regulating and storage pipe culvert, thereby improving the effect of automatic dredging.

Preferably, the desilting device includes a sliding component that can be displaced in the regulation and storage pipe culvert and a mud retaining component that is fixed to the sliding component. The sliding assembly includes a guide rail arranged inside the regulation and storage pipe culvert and a sliding part sliding on the guide rail.

The present invention further enhances the effect of automatic dredging by setting a sliding assembly with a mud-retaining component in the automatic dredging system, and pushing the sediment deposited at the bottom of the regulation and storage pipe culvert by external force in addition to hydraulic power.

Preferably, the power of the automatic dredging system comes from a water drop energy storage device.

In the present invention, the falling water energy storage device is added to the automatic desilting system, which not only realizes the energy dissipation effect on the inflow sewage, reduces the erosion and damage of the inflow sewage to the storage pipes and culverts, but also utilizes the kinetic energy generated by the free fall of the inflow sewage It is converted into electrical energy to provide power for the sliding components in the dredging device, and also provides an air source for the aeration system, which improves the automation of the entire dredging system.

Preferably, the falling water energy storage device includes at least one impeller arranged in the falling water shaft. The impeller is arranged at the bottom of the drop shaft.

Preferably, the power output end of the turbomachine is connected to the power input end of an air compressor, and the air compressor communicates with the compressed air storage tank. The compressed air storage tank is provided with two outlets, one outlet is connected to the exhaust pipe, and the other outlet is connected to a generator using compressed air to generate electricity.

In the present invention, two outlets are arranged in the compressed air storage tank, so that the compressed air storage tank not only provides energy for the generator, but also provides compressed air source for the aeration system, thereby simplifying the structure of the whole system.

Preferably, the power of the sliding part and/or the sewage pump comes from the generator.

The beneficial effects of the present invention are:

The automatic dredging system of the underground storage pipes and culverts of the present invention, due to the above structural design, the dredging effect of the system is improved by setting the dredging device and the aeration system, and has beneficial effects such as simple structure and good dredging effect.

In particular, the automatic desilting system of the underground regulating and storing pipes and culverts of the present invention is also equipped with a falling water energy storage device, which reduces the erosion and damage of the inflowing sewage on the regulating and storing pipes and culverts, and at the same time converts a large amount of energy generated during the inflow of sewage into It is compressed air storage, which has good energy conversion and energy utilization efficiency. The automatic dredging system provides an aeration function to suspend the sediment during the drainage of the regulation and storage culvert. At the end of the drainage of the storage pipes and culverts, the stored compressed air is converted into electric energy to provide power for the dredging device, realizing the automatic desilting of the underground storage pipes and culverts, and eliminating the original limitations of the storage pipes and culverts in practical applications. factors into favorable factors.

The automatic desilting system of the present invention, the falling water energy storage device and the desilting device can realize automatic operation through the automatic control system, without the need for special personnel to manage and operate and workers to go down to the well, which further improves the automation of the system.

The idea, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings, so as to fully understand the purpose, features and effects of the present invention.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of an embodiment of the present invention.

Fig. 2 is a schematic diagram of a partial cross-sectional structure of A-A in Fig. 1 .

Fig. 3 is a schematic diagram of the overall structure of another embodiment of the present invention.

Fig. 4 is a schematic diagram of the B-B cross-sectional structure in Fig. 3 .

Detailed ways

Example 1:

As shown in Figure 1, the regulating and storing pipe culvert 1 is located deep underground. The inflow sewage flows into the regulating and storing pipe culvert 1 from point C, after regulating and storing, it is discharged from point D and enters the sewage pipe network. During this process, the sludge will settle at the bottom of the regulation and storage pipe culvert 1 .

The automatic desilting system of the underground regulating and storage pipe culvert of the present invention is used to clean up the silt, and mainly includes a slidable desilting device 2 and an aeration system arranged in the regulating and storing pipe culvert 1 1 The silt discharge tank 31 and the sewage pump 32 at the end.

The desilting device 2 includes a sliding component 21 that can be displaced in the regulation and storage pipe culvert 1 , and a fender 22 fixed to the sliding component 21 .

Specifically, in this embodiment, the sliding assembly 21 includes two guide rails 211 respectively provided on the inner side walls of the regulation and storage pipe culvert 1 , and rollers 212 sliding on the guide rails 211 . The guide rail 211 is connected from the beginning end to the end of the regulation and storage pipe culvert 1 , and provides guidance for the movement of the roller 212 . The rollers 212 can move along the guide rails 211 driven by external power. The fender 22 is fixed on the shaft arm of the roller 212 and can move along the guide rail 211 together with the roller 212 .

Apparently, in different specific embodiments, the implementation manner of the sliding component is not limited to the above structure. For example, a slide assembly can consist of rails and sliders. The fender can be fixed on the slider, or has an integral structure with the slider. For another example, only one guide rail can be arranged, and it is arranged in the middle of the regulation and storage pipe culvert.

As shown in FIG. 2 , the aeration system includes an air source (not shown in the figure), and an exhaust pipe 41 arranged at the bottom of the regulation and storage pipe culvert 1 . The lower side of the exhaust pipe 41 is provided with a plurality of aeration holes, the openings of the aeration holes are downward, forming a certain angle with the bottom of the exhaust pipe 41, such as left and right 45°, so as to avoid being blocked by silt. The exhaust pipe 41 communicates with the air source, and discharges compressed air through a plurality of aeration holes during the drainage period of the regulating and storing pipe culvert 1 , so that the sediment in the regulating and storing pipe culvert 1 is suspended in the regulating and storing pipe culvert 1 .

The application of the present invention is illustrated below:

The storage pipes and culverts 1 store rainwater beyond the normal flow rate of the urban drainage pipe network under special weather conditions such as heavy rains and floods. At the bottom, it is difficult to completely desilt only by water flow power.

When the rainfall inflow and other conditions are over, and the urban drainage pipe network has free capacity, the drainage system of the regulating and storage pipe culvert 1 is opened. At this time, the dredging device 2 is started, and the sliding assembly 21 drives the fender 22 to move and decontaminate in the regulation and storage pipe culvert 1, so that the sediment deposited at the bottom of the regulation and storage pipe culvert 1 is pushed into the sewage discharge tank 31, and deposited The waste suspended in the rainwater is pumped and lifted by the sewage pump 32 together into the urban drainage pipe network, and then transported to the sewage treatment plant station for treatment.

In order to ensure the dredging effect, the dredging device 2 can be set through the automatic control system to make multiple round trips along the regulating and storage pipe culvert 1 under the condition of sufficient power supply to completely remove the silt. After the dredging is finished, the dredging device 2 stops at the starting end of the regulating and storage pipe culvert 1, and is ready for the next dredging work.

In particular, the present invention adds an aeration system. During the dredging process, the aeration system is turned on, and the compressed air is discharged into the rainwater through a plurality of aeration holes in the exhaust pipe 41, so as to improve the suspension effect of the sediment, and finally Enhanced desilting effect.

Example 2:

As shown in Fig. 3 and Fig. 4, this embodiment is a further optimization of Embodiment 1. On the basis of the dredging device and the aeration system, a drop water energy storage device is added. The falling water energy storage device mainly includes a one-stage impeller 52 arranged at the bottom of the falling water shaft 51 (in different embodiments, according to different parameters such as head drop and inflow flow, multi-stage impellers can be set to meet energy dissipation requirements). The impeller 52 mainly includes a transmission rod 521 and an impeller 522, which are used to eliminate the potential energy generated by the free fall of rainwater and sewage from a large height, and convert the potential energy into kinetic energy.

The power output end of the impeller 52 is connected to the power input end of an air compressor 54 via a set of speed change gears 53 , and the air compressor 54 communicates with a compressed air storage tank 55 . Through the above structure, the air compressor 54 converts the energy transmitted by the impeller 52 into compressed air and stores it in the compressed air tank 55 .

The compressed air storage tank 55 is provided with two outlets. Wherein, one outlet is connected with the exhaust pipe 41 to provide air source for the aeration system. The other outlet is connected with a generator 56 that utilizes compressed air to generate electricity. The generator 56 can be equipped with an electric meter to measure the power generation, and a stabilizing system to provide stable power supply. The generator 56 converts the energy of the compressed air into electric energy at the end of the drainage of the storage pipe culvert 1 , and provides power for the sliding assembly 21 through the line system 57 , and can also provide power for the sewage pump 32 at the same time.

The rainwater collected by the urban drainage pipe network during the period of heavy rainfall enters the falling water shaft 51 after being intercepted by the intercepting pump station, and the water flows freely from the falling water inlet C of the falling water shaft 51 into the falling water shaft 51 . The purpose of adopting the falling water inlet at C is mainly to prevent the potential energy of the inflowing water from being excessively lost due to the friction of the falling water shaft 51, thereby converting the potential energy into kinetic energy to the greatest extent.

The water flow entering the falling water shaft 51 reaches the impeller 52 after freely falling, and the flow velocity of the high-speed falling water decreases under the obstruction of the impeller 522 of the impeller 52, and the impeller 522 rotates at a high speed under the promotion of the water kinetic energy, and the kinetic energy generated It is transmitted upwards to the transmission gear 53 by the transmission device. The device here realizes the energy dissipation and energy transmission of the water flow. After the water flow passes through the impeller 52, it falls into the regulation and storage pipe culvert 1 at a low speed, avoiding the severe impact of the falling water flow on the bottom of the regulation and storage pipe culvert 1. The scouring damage to the bottom of the regulation and storage pipe culvert 1 is reduced.

The speed change gear 53 rotates at a high speed driven by the impeller 522, and at the same time drives the air compressor 54 to work, compressing the inhaled air and sending it into the compressed air storage tank 55 for storage. Here, the technical purpose of converting the flow energy of water into the internal energy of compressed air is realized.

For ease of maintenance, equipment such as gear change gear 53, air compressor 54, compressed air storage tank 55, generator 56 in the water-fall energy storage device can be arranged on the ground near the water-fall shaft 51.

The operation method and the application of the automatic dredging system of the present invention are illustrated below:

The automatic desilting system of the present invention adopts the energy storage of the falling water shaft to realize the inflow energy dissipation of the storage pipes and culverts, and converts the stored energy into electric energy to provide energy for removing the silt during the storage period. The main working steps are:

When the rainwater enters the falling shaft 51, the impeller 52 is driven to rotate at a high speed. The impeller 52 drives the air compressor 54 through the transmission gear 53 to convert the kinetic energy into compressed air, and stores the compressed air in the compressed air storage tank 55.

During the draining process of the regulation and storage pipe culvert 1, start the compressed air storage tank 55 to exhaust into the regulation and storage pipe culvert 1 through the exhaust pipe 41, so that part of the silt is suspended and discharged out of the regulation and storage pipe culvert 1 with the water flow.

Before the storage of rainwater and sewage in the regulation and storage pipe culvert 1 is lifted, the supply of compressed air to the exhaust pipe 41 is stopped, and the compressed air is released from the compressed air storage tank 55, and the generator 56 is driven by the compressed air to generate The stable current, through the transmission of the line system 57, drives the sliding assembly 21 of the dredging device 2 located in the regulating and storing pipe culvert 1 to move along the track 211 from the beginning end to the end of the regulating and storing pipe culvert 1, and the block of the dredging device 2 The mud plate 22 pushes the silt deposited at the bottom of the regulation and storage pipe culvert 1 to the silt discharge pool 31 at the end of the regulation and storage pipe culvert, and the rainwater with silt in the regulation and storage pipe culvert 1 is lifted by the sewage pump 32 to enter Urban drainage pipe network, and then transmitted to the sewage treatment plant station for treatment.

During the daily operation of the regulation and storage pipe culvert 1, the resuspension and removal of the deposited sludge is mainly carried out by means of aeration of compressed air through multiple exhaust pipes 41 at the bottom of the regulation and storage pipe culvert 1. Since the aeration method cannot completely clean up the silt in the regulation and storage pipe culvert 1, a desilting device can be used to perform desilting every 3-6 months.

The structural installation and use of the entire automatic dredging system can ensure the automatic operation of the storage pipe and culvert system without special personnel on duty and manual downhole operations.

On the whole, due to the above-mentioned structural design, the present invention stores and transforms a large amount of kinetic energy in the inflow process of the storage pipes and culverts, and uses them for dredging energy consumption of deep underground storage pipes and culverts, which saves energy and improves the automation of the system.

The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make many modifications and changes according to the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning or limited experiments on the basis of the prior art shall be within the scope of protection defined by the claims.

Claims (10)

1. An automatic dredging system for underground regulating and storing pipes and culverts, comprising a slidable dredging device arranged in the described regulating and storing pipes and culverts, the end of the described regulating and storing pipes and culverts is provided with a silt discharge tank and a sewage pump; It is characterized in that: the automatic dredging system also includes an aeration system; the aeration system includes an exhaust pipe arranged at the bottom of the regulating and storage pipe culvert, and a plurality of aeration pipes are arranged on the lower side of the exhaust pipe. hole. 2. The automatic dredging system according to claim 1, characterized in that: the exhaust pipe communicates with the air source and exhausts air into the regulating and storing pipe culvert through the aeration hole to make the regulating and storing Silt in the culvert is suspended in the regulation and storage culvert. 3. The automatic desilting system according to claim 1, characterized in that: the desilting device includes a sliding assembly that can be displaced in the regulation and storage pipe culvert and a mud retaining member fixed to the sliding assembly . 4 . The automatic dredging system according to claim 3 , wherein the sliding assembly comprises a guide rail arranged inside the regulation and storage pipe culvert and a sliding part sliding on the guide rail. 5 . 5. The automatic desilting system according to any one of claims 1 to 4, characterized in that: the power of the automatic desilting system comes from a drop water energy storage device. 6. The automatic dredging system according to claim 5, characterized in that: the falling water energy storage device comprises at least one impeller arranged in the falling water shaft. 7. The automatic dredging system according to claim 6, characterized in that: the impeller is arranged at the bottom of the drop shaft. 8. The automatic dredging system according to claim 6, characterized in that: the power output end of the impeller is connected to the power input end of an air compressor, and the air compressor is in communication with a compressed air storage tank. 9. The automatic dredging system as claimed in claim 8, wherein the compressed air storage tank is provided with two outlets, one outlet is connected to the exhaust pipe, and the other outlet is connected to a generator using compressed air to generate electricity. dynamo. 10. The automatic dredging system according to claim 9, characterized in that: the power of the sliding part and/or the sewage pump comes from the generator.

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