An automatic cleaning system for tunnel air purification station

Abstract

The present invention discloses an automatic cleaning system for a tunnel air purification station, comprising an electrostatic dust removal filter cleaning pipeline and a primary filter cleaning pipeline, the electrostatic dust removal filter cleaning pipeline comprising an electrostatic dust removal unit, the top of the electrostatic dust removal unit is respectively horizontally provided with a first cleaning water pipe, both ends of the first cleaning water pipe are respectively bent to the corresponding two sides of the electrostatic dust removal unit, the primary filter cleaning pipeline comprises a primary filter, the primary filters are arranged in a V shape, second cleaning water pipes are respectively arranged between the primary filters, the second cleaning water pipes are respectively vertically arranged, and wide-angle atomizing nozzles are evenly arranged on the surface of the second cleaning water pipes. The present invention adopts an automatic cleaning system to achieve maintenance-free and replacement-free filter units, reduce maintenance workload, and reduce maintenance costs.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel air purification, and specifically relates to an automatic cleaning system for a tunnel air purification station. Background Art

[0002] Tunnels are engineering structures buried in the ground and are a form of human use of underground space. Tunnels can be divided into traffic tunnels, hydraulic tunnels, municipal tunnels, mining tunnels, and military tunnels.

[0003] In 1970, the Tunnel Conference held by the Organization for Economic Cooperation and Development combined various factors and defined the tunnel as: "A cavern with a cross-sectional area of ​​more than 2 square meters built underground by any method in a specified shape and size for a certain purpose.

[0004] Tunnels need to be ventilated. After good ventilation, the maximum allowable concentration of harmful substances in the air of tunnels and underground projects, the air temperature, relative humidity and flow rate should all meet national health standards. In the absence of health standards, the relevant design specifications shall be followed. ① Railway tunnels. The carbon monoxide concentration in the air shall not exceed 30 mg / m, the nitrogen oxide concentration (converted into nitrogen dioxide) shall not exceed 8 mg / m, and the dust concentration containing more than 10% free silicon dioxide shall not exceed 2 mg / m. ② Road tunnels. Ventilation is aimed at eliminating carbon monoxide and smoke in automobile exhaust to ensure the driver's safe sight distance and driving comfort. ③ Underground railways. The main consideration is to have a suitable temperature in stations and sections, and to control the concentration of carbon dioxide. ④ Underground construction projects. According to their importance and use nature, different air temperatures, relative humidity, flow rates, maximum allowable concentrations of harmful substances in the air, and fresh air volume are required. Carbon dioxide concentration is generally used as a sign of internal air quality: in peacetime use, the allowable concentration is 0.1-0.5%; in wartime use, it is less than 1%. When the building is isolated from the outside world (i.e. closed), the short-term permissible concentration is 2-3%. The amount of fresh air supplied to each person per hour is 30-40 meters for normal ventilation, 5-35 meters for clean ventilation and 2-10 meters for gas-filtering ventilation in wartime.

[0005] The primary filter and electrostatic filter in the tunnel air purification station need to be cleaned periodically after running for a period of time, but the cleaning process is difficult. Therefore, an automatic cleaning system for the tunnel air purification station is proposed. Summary of the invention

[0006] The object of the present invention is to provide an automatic cleaning system for a tunnel air purification station to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic cleaning system for a tunnel air purification station, comprising an electrostatic dust removal cleaning pipeline and a primary filter cleaning pipeline, the electrostatic dust removal unit, the electrostatic dust removal unit has a total of 9 columns, and the 9 columns of electrostatic dust removal units are staggered to form two rows and a double-layer arrangement, the top of the electrostatic dust removal unit is horizontally provided with a first cleaning water pipe, the two ends of the first cleaning water pipe are respectively bent to the two sides of the corresponding electrostatic dust removal unit, the two ends of the first cleaning water pipe are respectively fixedly connected with a cleaning nozzle, and the number of the cleaning nozzles on each of the first cleaning water pipes is 8; the two ends of the horizontal part of the first cleaning water pipe are respectively provided with a first solenoid valve; the first cleaning water pipe is respectively connected to the first water supply pipe arranged at the top of the electrostatic dust removal unit, and the first cleaning water pipe is connected through a hose It is connected to the first water supply pipe, and the first cleaning water pipe is driven to rotate by a gear motor respectively; the primary filter cleaning pipeline includes a primary filter, and the primary filters are arranged in a V shape. Second cleaning water pipes are respectively arranged between the primary filters, and the second cleaning water pipes are respectively arranged vertically. Wide-angle atomizing nozzles are evenly arranged on the surface of the second cleaning water pipes. The second water supply pipe is located at the lower end of the primary filter, and the second cleaning water pipes are respectively connected to the second water supply pipes. The first water supply pipe and the second water supply pipe are respectively connected to a water treatment chamber, and the water treatment chamber is arranged inside the tunnel. The water treatment chamber is used to supply water to the first water supply pipe and the second water supply pipe. The two second cleaning water pipes on the same side and adjacent to each other are connected by a connecting pipe, and the connecting pipes are respectively connected to the second water supply pipes, and the connecting pipes are respectively provided with second solenoid valves.

[0008] Preferably, the second water supply pipe is supported by a water pipe support frame.

[0009] Preferably, drainage pipelines are respectively provided at the bottom of the electrostatic precipitator unit and the primary filter, and the drainage pipelines are respectively connected to the water treatment chambers.

[0010] Compared with the prior art, the invention has the following beneficial effects: an automatic cleaning system for tunnel air purification stations, which uses a nozzle to flush the wind-passing surface of the primary filter and the electrostatic filter with cleaning water in the form of water mist to remove PM2.5 and PM10 particles accumulated on the dust collecting plate. The cleaning system is controlled by a fully automatic integrated monitoring system, and the cleaning time and cleaning cycle can be adjusted; the automatic cleaning system is used to achieve maintenance-free and replacement-free filter units; the maintenance workload is reduced, and the maintenance cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the main structure of the electrostatic dust removal filter cleaning pipeline of the present invention;

[0012] Figure 2It is a schematic diagram of the left side cross-sectional structure of the electrostatic dust removal filter cleaning pipeline of the present invention;

[0013] Figure 3 It is a left-side structural schematic diagram of the electrostatic dust removal filter cleaning pipeline of the present invention;

[0014] Figure 4 It is a schematic diagram of the top view of the cleaning pipeline of the electrostatic dust removal filter of the present invention;

[0015] Figure 5 It is a schematic diagram of the top view of the cleaning pipeline of the primary filter of the present invention;

[0016] Figure 6 This is a schematic diagram of the left-side cross-sectional structure of the new primary filter cleaning pipeline used in this article.

[0017] In the figure: 1. Electrostatic dust removal unit; 2. First cleaning water pipe; 3. Cleaning nozzle; 4. First water supply pipe; 5. Primary filter; 6. Second cleaning water pipe; 7. Wide-angle atomizing nozzle; 8. Second water supply pipe; 9. First solenoid valve; 10. Connecting pipe; 11. Second solenoid valve; 12. Water pipe support frame. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-6 The present invention provides a technical solution: an automatic cleaning system for a tunnel air purification station, comprising an electrostatic dust removal filter cleaning pipeline and a primary filter cleaning pipeline, wherein the electrostatic dust removal filter cleaning pipeline comprises an electrostatic dust removal unit 1, such as Figure 4 As shown, the electrostatic precipitator units 1 are arranged in 9 rows in total, and the 9 rows of electrostatic precipitator units 1 are staggered to form two rows and double layers. The tops of the electrostatic precipitator units 1 are horizontally provided with first washing water pipes 2, as shown in FIG. Figure 2 As shown, the two ends of the first cleaning water pipe 2 are respectively bent to the two sides of the corresponding electrostatic precipitator unit 1, and the first cleaning water pipe 2 forms an N shape. The two ends of the first cleaning water pipe 2 are respectively fixedly connected with cleaning nozzles 3, and the cleaning nozzles 3 correspond to the two sides of the electrostatic precipitator unit 1 respectively. The first cleaning water pipe 2 is respectively connected to the first water supply pipe 4 set at the top of the electrostatic precipitator unit 1, as shown in FIG. Figure 1 and Figure 4As shown, the upper end of each layer of electrostatic precipitator unit 1 is respectively provided with the first water supply pipe 4 to supply water to the first cleaning water pipe 2. The number of the first water supply pipes 4 is four, and the four first water supply pipes 4 are arranged in parallel. Figure 3 As shown, four first water supply pipes 4 are combined into one main water supply pipe;

[0020] The primary filter cleaning pipeline includes a primary filter 5, such as Figure 5 As shown, the primary filters 5 are arranged in a V-shape, and second cleaning water pipes 6 are respectively provided between the primary filters 5. Figure 6 As shown, the second cleaning water pipe 6 is respectively arranged vertically, and the length of the second cleaning water pipe 6 is slightly greater than the height of the primary filter 5, so that the second cleaning water pipe 6 can clean the primary filter 5 without dead angles, and the surface of the second cleaning water pipe 6 is evenly provided with wide-angle atomizing nozzles 7 to ensure that the primary filter 5 is cleaned more thoroughly, and the two sides of the primary filter 5 are respectively provided with second water supply pipes 8, as shown in FIG. Figure 6 As shown, the second water supply pipe 8 is located at the lower end of the primary filter 5, the second cleaning water pipe 6 is connected to the second water supply pipe 8 respectively, the first water supply pipe 4 and the second water supply pipe 8 are respectively connected to a water treatment chamber, and the water treatment chamber is arranged inside the tunnel, and the water treatment chamber is used to supply water to the first water supply pipe 4 and the second water supply pipe 8.

[0021] Specifically, the number of the cleaning nozzles 3 on each of the first cleaning water pipes 2 is 8, and the number of the cleaning nozzles 3 on each side of the first cleaning water pipe 2 is 4. Figure 1 As shown, the first water supply pipe 4 is arranged in a curved shape at the tunnel longitudinal beam, and at the cross beam, the height of the first water supply pipe 4 is appropriately reduced, so that the length of the corresponding vertical part of the first cleaning water pipe 2 is shortened, and the number of the cleaning nozzles 3 can be reduced to 6.

[0022] Specifically, if Figure 4 As shown, first solenoid valves 9 are respectively provided at both ends of the horizontal part of the first cleaning water pipe 2, the first water supply pipe 4 is respectively connected to the corresponding horizontal parts of the first cleaning water pipe 2, and the first solenoid valves 9 are respectively located on both sides of the corresponding first water supply pipe 4, so that the cleaning of the electrostatic precipitator unit 1 is controlled by starting and stopping the first solenoid valve 9.

[0023] Specifically, the first cleaning water pipe 2 is connected to the first water supply pipe 4 through a hose, and the first cleaning water pipe 2 is driven to rotate by a gear motor respectively, and a reduction mechanism can be formed by gears, and then the power of the motor is transmitted to the first cleaning water pipe 2, so that the first cleaning water pipe 2 rotates along the axis, driving the vertically arranged parts at both ends of the first cleaning water pipe 2 to swing, and then driving the cleaning nozzle 3 to swing accordingly, so as to comprehensively clean the electrostatic dust removal unit 1 in between. There are many connection methods between the motor, the reducer and the first cleaning water pipe 2, which are technical means commonly used by technical personnel in this field. During installation, the construction personnel can choose a suitable installation method according to the actual situation on site, so that after the motor is started, it can drive the first cleaning water pipe 2 to make reciprocating rotation motion.

[0024] Specifically, two adjacent second cleaning water pipes 6 on the same side are connected by a connecting pipe 10, that is, the two adjacent second cleaning water pipes 6 form a passage through the connecting pipe 10, such as Figure 5 As shown, the primary filter 5 has a larger spacing at the vertical beam of the tunnel, and the connecting pipe 10 is bent accordingly. The connecting pipes 10 are respectively connected to the second water supply pipes 8, and the second water supply pipes 8 are respectively located on both sides of the primary filter 5. The connecting pipes 10 are respectively provided with second solenoid valves 11, and the primary filter 5 is cleaned by controlling the start and stop of the second solenoid valve 11.

[0025] Specifically, if Figure 6 As shown, the second water supply pipe 8 is supported by a water pipe support frame 12 . The water pipe support frame 12 has a relatively simple structure and can be assembled on site during installation to support the second water supply pipe 8 .

[0026] Specifically, drainage pipes are respectively provided at the bottom of the electrostatic precipitator unit 1 and the primary filter 5, and the drainage pipes are respectively connected to the water treatment chambers. After cleaning is completed, the generated sewage enters the water treatment chamber through the drainage pipes for treatment. After purification, the sewage can be reused to supply water to the first water supply pipe 4 and the second water supply pipe 8.

[0027] The solenoid valves in the device are uniformly controlled by the control system, and the cleaning time and cleaning cycle can be adjusted at will.

[0028] Working principle: 9 rows of 72 electrostatic dust filter units 1 are divided into 3 zones for cleaning. Each time, 3 rows of 24 electrostatic dust filter units 1 are cleaned. During cleaning, all the first solenoid valves 9 of the cleaning zone are opened, and the solenoid valves of other zones are all closed. Each zone is cleaned for 4 minutes, a total of 12 minutes. The water consumption for each cleaning is 12.67 tons. The water for cleaning the electrostatic dust filter is drawn from the clean water tank by the clean water pump installed in the water treatment room. The cleaning of the electrostatic dust filter is controlled by a fully automatic integrated monitoring system, and its single cleaning time and cleaning cycle can be adjusted as needed. During the cleaning of the electrostatic dust filter, the high voltage power supply must be cut off and the electrostatic dust collector must stop working to ensure the safety of the cleaning operation.

[0029] The cleaning of the primary filter 5 is divided into four areas for cleaning in sequence by controlling the opening and closing of each second solenoid valve 11. The cleaning time of each area is 1 minute. The total time is 4 minutes. The amount of water used for each cleaning is 4.3 tons. The water for cleaning the primary filter 5 is drawn from the clean water tank by the clean water pump installed in the water treatment room. The cleaning of the primary filter 5 is controlled by a fully automatic integrated monitoring system, and its single cleaning time and cleaning cycle can be adjusted as needed.

[0030] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense, for example, it 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 the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic cleaning system for a tunnel air purification station, comprising an electrostatic dust removal filter cleaning pipeline and a primary filter cleaning pipeline, characterized in that: The electrostatic precipitator unit (1) has 9 rows in total, and the 9 rows of electrostatic precipitator units (1) are staggered to form two rows and a double-layer arrangement. The top of each electrostatic precipitator unit (1) is horizontally provided with a first cleaning water pipe (2), and the two ends of the first cleaning water pipe (2) are respectively bent to the two sides of the corresponding electrostatic precipitator unit (1). The two ends of the first cleaning water pipe (2) are respectively fixedly connected with a cleaning nozzle (3), and the number of the cleaning nozzles (3) on each first cleaning water pipe (2) is 8; the two ends of the horizontal part of the first cleaning water pipe (2) are respectively provided with a first solenoid valve (9); the first cleaning water pipe (2) is respectively connected to a first water supply pipe (4) arranged at the top of the electrostatic precipitator unit (1), the first cleaning water pipe (2) is connected to the first water supply pipe (4) through a hose, and the first cleaning water pipe (2) is respectively driven to rotate by a gear motor; The cleaning pipeline of the primary filter comprises a primary filter (5), the primary filters (5) are arranged in a V shape, a second cleaning water pipe (6) is respectively arranged between the primary filters (5), the second cleaning water pipe (6) is respectively arranged vertically, a wide-angle atomizing nozzle (7) is evenly arranged on the surface of the second cleaning water pipe (6), a second water supply pipe (8) is located at the lower end of the primary filter (5), the second cleaning water pipe (6) is respectively connected to the second water supply pipe (8), the first water supply pipe (4) and the second water supply pipe (8) are respectively connected to a water treatment chamber, the water treatment chamber is arranged inside the tunnel, the water treatment chamber is used to supply water to the first water supply pipe (4) and the second water supply pipe (8), the two second cleaning water pipes (6) on the same side and adjacent to each other are connected by a connecting pipe (10), the connecting pipe (10) is respectively connected to the second water supply pipe (8), and the connecting pipe (10) is respectively provided with a second solenoid valve (11).

2. The automatic cleaning system for a tunnel air purification station according to claim 1, characterized in that: The second water supply pipe (8) is supported by a water pipe support frame (12).

3. The automatic cleaning system for a tunnel air purification station according to claim 1, characterized in that: The bottoms of the electrostatic precipitator unit (1) and the primary filter (5) are respectively provided with drainage pipelines, and the drainage pipelines are respectively connected to the water treatment chambers.

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