Bolt-connected wet-type electrostatic dust collector

Abstract

The utility model provides a wet-type electrostatic dust collector connected through bolts, and relates to the field of wet-type electrostatic dust collectors. The wet-type electrostatic dust collector connected through the bolts comprises an inner chamber structure, the inner chamber structure comprises an upper air chamber, a dust collection chamber, a lower air chamber and an air inlet chamber which are sequentially communicated, the interior of the dust collection chamber is of a vertical honeycomb tubular structure, the honeycomb structure in the dust collection chamber is an anode, a cathode beam frame is installed in the upper air chamber, and a cathode wire is installed on the cathode beam frame; according to the bolted connection wet-type electrostatic dust collector, the external frame is in bolted connection, the whole wet-type electrostatic dust collector is manufactured in a field, only bolts need to be connected in the field, equipment installation is flexible, the requirement for the field during construction is greatly lowered, the construction progress is accelerated, and through the arrangement of the spraying device, sprayed water flushes the cathode wires and the honeycomb-shaped anodes and is matched with rotating work, the dust collection efficiency is improved. Therefore, the purpose of enlarging the water spraying range is achieved, the purpose of evenly spraying water is achieved, and finally the valve is opened to discharge water.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of wet electrostatic precipitator, concretely to a bolt connection wet electrostatic precipitator. BACKGROUND

[0002] The wet electrostatic precipitator is a kind of electrostatic precipitator that makes the surface of dust collecting electrode form a layer of water film by means of water spraying or overflow, to realize the dust cleaning of electrode plate, which can effectively avoid the re-suspension of dust, and achieve high dust removal efficiency. The wet electrostatic precipitator is usually added after the primary dust collector and wet desulfurization, as a secondary dust removal equipment, mainly used for treating gas containing trace dust and fine particles, removing harmful substances such as dust, acid mist, water droplets, aerosol, odor and PM2.5.

[0003] The traditional wet electrostatic precipitator is fixed by welding, which requires a high construction site, and the welding assembly of large equipment needs a large operation space, and is limited by the site environment conditions, such as narrow site and difficult overhead work, which will lead to high installation difficulty and slow progress. Once the equipment is assembled by welding connection, it is difficult to adjust and change, resulting in poor flexibility. SUMMARY

[0004] In view of the shortcomings of the prior art, the utility model provides a bolt connection wet electrostatic precipitator, the inner chamber structure is bolted, and all the field production is completed, only the bolt needs to be connected on site, the equipment installation is flexible, the requirement for site during construction is greatly reduced, and the construction progress is improved.

[0005] To achieve the above purpose, the utility model realizes the following technical scheme: a bolt connection wet electrostatic precipitator, comprising an external frame structure and an inner chamber structure, characterized in that: the external frame structure comprises a fixed upper support and a bottom support, the inner chamber structure is fixedly installed in the external frame structure, the inner chamber structure comprises an upper gas chamber, a dust removal chamber, a lower gas chamber and a gas inlet chamber connected in sequence, the inside of the dust removal chamber is in vertical honeycomb tubular structure, and the honeycomb structure inside the dust removal chamber is anode, the inside of the upper gas chamber is provided with a cathode beam frame, the cathode beam frame is provided with a cathode wire, the cathode wire vertically extends into the honeycomb tube of the dust removal chamber, and an electric field is generated in the honeycomb tube, a spraying device for spraying is installed on the upper gas chamber, and a uniform air distribution device for uniformly distributing flue gas is installed in the gas inlet chamber.

[0006] The upper gas chamber and the upper gas chamber are respectively sleeved with the two ends of the dust removal chamber, and are fixed with the dust removal chamber through bolts and nuts, and the end parts of the upper gas chamber, the upper gas chamber and the dust removal chamber are all provided with annular protruding structures.

[0007] Preferably, the bottom of the lower air chamber is communicated with a drain pipe for draining water, and one end of the drain pipe is communicated with a valve.

[0008] Preferably, the outer side of the upper air chamber is communicated with an exhaust pipe for exhausting air.

[0009] Preferably, the cathode beam frame comprises a cathode girder and a cathode beam fixedly installed on the cathode girder, the cathode girder is fixedly connected with the upper air chamber, and the cathode wire is hung on the cathode beam.

[0010] Preferably, the number of the cathode wires is several, and the cathode wires are uniformly distributed in the honeycomb pipe of the dust removal chamber, and the bottom end of the cathode wire is fixedly installed with a weight.

[0011] Preferably, the spraying device comprises a vertical pipe, a fixed cylinder, a driving shaft, a water conveying pipe, a horizontal pipe sealed at both ends and a plurality of spray heads installed at the bottom of the horizontal pipe, the water conveying pipe is fixed with the upper air chamber through a fixed block, the vertical pipe is rotatably connected with the upper end of the upper air chamber, the vertical pipe is communicated with the horizontal pipe, the inside of the vertical pipe is provided with a water inlet A, the inside of the fixed cylinder is provided with a water inlet B, the fixed cylinder is rotatably connected with the vertical pipe and the driving shaft, and is fixedly connected with the water conveying pipe, the other end of the water conveying pipe is connected with an external water pump, and the driving shaft is connected with an external motor.

[0012] Preferably, the air uniformizing device comprises an outer shell, a filter screen, a plurality of guide plates and two air flow distribution plates, the inside of the air flow distribution plate is provided with a plurality of through holes which are distributed at equal distances, the outer shell is fixedly connected with the air inlet chamber, the filter screen and the two air flow distribution plates are fixedly connected with the outer shell, the plurality of guide plates are located between the two air flow distribution plates and are fixedly connected with the two air flow distribution plates.

[0013] Preferably, the upper support and the bottom support each comprise a plurality of vertical rods and a plurality of groups of horizontal rods, the vertical rods and the horizontal rods form a matrix structure, the horizontal rods are in the shape of an I-beam, and the connecting pieces are fixed at the connection positions of the vertical rods and the horizontal rods by bolts.

[0014] Preferably, the upper support and the bottom support each comprise a plurality of groups of inclined rods and a plurality of angle irons, the plurality of angle irons are fixed at the connection positions of the inclined rods and the vertical rods and the horizontal rods by bolts, and the inclined rods are in the shape of an I-beam.

[0015] Compared with the prior art, the utility model has the advantages that the external frame is connected by bolts, all the work is completed in the field, only the bolts need to be connected in the field, the equipment is flexible to install, the requirements for the field during construction are greatly reduced, the construction progress is improved, the air uniformizing device improves the uniformity of the flue gas flow, the flue gas uniformly passes through the air uniformizing device, thereby further improving the dust removal effect, the spraying device is provided, the sprayed water washes the cathode wire and the honeycomb-shaped anode, and the spraying device rotates, thereby achieving the purposes of increasing the water spraying range and uniformly spraying water, and finally the water can be discharged by opening the valve. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the structure schematic view of inner chamber structure of the utility model;

[0017] Figure 2 It is the sectional view of inner chamber structure side view of the utility model;

[0018] Figure 3 It is the utility model Figure 2 It is the enlarged schematic view of structure in A of the utility model;

[0019] Figure 4 It is the sectional view of dust removal chamber plan view of the utility model;

[0020] Figure 5 It is the sectional view of upper gas chamber plan view of the utility model;

[0021] Figure 6 It is the utility model Figure 5 It is the enlarged schematic view of structure in B of the utility model;

[0022] Figure 7 It is the schematic view of inner structure of upper gas chamber of the utility model;

[0023] Figure 8 It is the schematic view of filter screen, flow guide plate, airflow distribution plate of the utility model;

[0024] Figure 9 It is the front view of external frame structure of the utility model;

[0025] Figure 10 It is the side view of external frame structure of the utility model;

[0026] Figure 11 It is the front view of upper structure of the utility model;

[0027] Figure 12 It is the side view of upper structure of the utility model;

[0028] Figure 13 It is the front view of bottom structure of the utility model;

[0029] Figure 14 It is the side view of bottom structure of the utility model;

[0030] Figure 15 It is the plan view of bottom structure of the utility model;

[0031] Figure 16 It is the schematic view of longitudinal rod structure of the utility model.

[0032] Wherein: 1, inner chamber structure; 101, upper air chamber; 102, dust removal chamber; 103, lower air chamber; 104, air inlet chamber; 2, cathode line; 3, spraying device; 301, vertical pipe; 302, fixed cylinder; 303, driving shaft; 304, water delivery pipe; 305, horizontal pipe; 306, spray head; 4, air equalizing device; 401, outer shell; 402, filter screen; 403, flow guide plate; 404, air flow distribution plate; 5, bolt; 6, drain pipe; 7, exhaust pipe; 8, cathode beam; 9, cathode small beam; 10, water inlet A; 11, heavy hammer; 12, external frame structure; 121, upper support; 122, bottom support; 123, vertical rod; 124, horizontal rod; 125, connecting piece; 126, diagonal rod; 127, angle iron. DETAILED DESCRIPTION

[0033] As Figures 1-16As shown, a bolted wet electrostatic precipitator comprises an outer frame structure 12 and an inner chamber structure 1, the outer frame structure 12 comprises fixed upper support 121 and bottom support 122, the inner chamber structure 1 is fixedly installed in the outer frame structure 12, the upper part of the upper support 121 is provided with an exhaust pipe for exhaust, the upper support 121 and the bottom support 122 both comprise a plurality of longitudinal rods 123 and a plurality of groups of transverse rods 124, the longitudinal rods 123 and the transverse rods 124 form a matrix structure, the transverse rods 124 are I-shaped structures, the connecting pieces 125 are fixed at the connection between the longitudinal rods 123 and the transverse rods 124 by bolts 5, the upper support 121 and the bottom support 122 both comprise a plurality of groups of inclined rods 126 and a plurality of angle irons 127, the plurality of angle irons 127 are fixed at the connection between the inclined rods 126 and the longitudinal rods 123 and the transverse rods 124 by bolts 5, the inclined rods 126 are I-shaped structures, the inner chamber structure 1 comprises an upper gas chamber 101, a dust removal chamber 102, a lower gas chamber 103 and an inlet chamber 104 which are sequentially communicated, the bottom of the lower gas chamber 103 is provided with a plurality of supporting legs, the bottom of the lower gas chamber 103 is communicated with a drain pipe 6 for draining water, one end of the drain pipe 6 is communicated with a valve, the outer side of the upper gas chamber 101 is communicated with an exhaust pipe 7 for exhaust, the inside of the dust removal chamber 102 is in a vertical honeycomb tube structure, and the honeycomb structure inside the dust removal chamber 102 is an anode, the inside of the upper gas chamber 101 is provided with a cathode beam frame, the cathode beam frame is provided with a plurality of cathode wires 2, the cathode wires 2 vertically extend into the honeycomb tube of the dust removal chamber 102 and generate an electric field in the honeycomb tube, the cathode beam frame comprises a cathode large beam 8 and a cathode small beam 9 fixedly installed on the cathode large beam 8, the cathode large beam 8 is fixedly connected with the upper gas chamber 101, the cathode wires 2 are hung on the cathode small beam 9, the number of the cathode wires 2 is a plurality and they are uniformly distributed in the honeycomb tube of the dust removal chamber 102, the bottom end of the cathode wire 2 is fixedly provided with a weight 11, the weight 11 ensures that the cathode wire 2 is always in a vertical state, ensuring the uniformity and stability of the electric field, the upper gas chamber 101 is provided with a spraying device 3 for spraying, the spraying device 3 comprises a longitudinal pipe 301, a fixed cylinder 302, a driving shaft 303, a water conveying pipe 304, a transverse pipe 305 with sealed two ends and a plurality of spray heads 306 installed at the bottom of the transverse pipe 305, the water conveying pipe 304 is fixed with the upper gas chamber 101 through a fixed block, the longitudinal pipe 301 is rotationally connected with the upper end of the upper gas chamber 101, the longitudinal pipe 301 is communicated with the transverse pipe 305, a water inlet A10 is formed in the inside of the longitudinal pipe 301, a water inlet B is formed in the inside of the fixed cylinder 302, the fixed cylinder 302 is rotationally connected with the longitudinal pipe 301 and the driving shaft 303 and is fixedly connected with the water conveying pipe 304, the other end of the water conveying pipe 304 is connected with an external water pump, the driving shaft 303 is connected with an external motor, water is conveyed through the water conveying pipe 304, the water inlet B, the water inlet A10, the longitudinal pipe 301 and the transverse pipe 305 in sequence by the water pump, and the water in the transverse pipe 305 is sprayed out from the plurality of spray heads 306, which is convenient for flushing work, the longitudinal pipe 301 and the transverse pipe 305 can be driven to rotate by driving the driving shaft 303 through the motor,Further, the plurality of nozzles 306 are rotated, which not only increases the water spraying range, but also uniformly sprays water. The air inlet chamber 104 is internally provided with an air uniformizing device 4 for uniformly distributing flue gas. The air uniformizing device 4 comprises an outer shell 401, a filter screen 402, a plurality of guide plates 403 and two air flow distribution plates 404. The air flow distribution plates 404 are internally provided with a plurality of equidistant through holes. The outer shell 401 is fixedly connected with the air inlet chamber 104. The filter screen 402 and the two air flow distribution plates 404 are fixedly connected with the outer shell 401. The plurality of guide plates 403 are located between the two air flow distribution plates 404 and are fixedly connected with the two air flow distribution plates 404. The air uniformizing device 4 uniformly distributes the flue gas entering the dust collector, so as to avoid that the local air flow is too large or too small to affect the dust removal effect.

[0034] The upper air chamber 101 and the upper air chamber 101 are respectively sleeved with both ends of the dust removal chamber 102, and are fixed with the dust removal chamber 102 through the bolts 5 and the nuts. The end portions of the upper air chamber 101, the upper air chamber 101 and the dust removal chamber 102 are provided with annular protruding structures.

[0035] Working principle:

[0036] The outer frame structure 12 can be divided into a plurality of independent structures, each structure is independently manufactured, and can be finely produced and quality controlled in the factory. The production environment of the factory is relatively stable, so that the quality and precision of the product can be guaranteed. In addition, the independent structure is convenient for transportation, so that each component can be transported to the site separately, thereby avoiding the difficulty and risk of transporting large whole equipment. When the inner chamber structure 1 is installed, the upper air chamber 101, the dust removal chamber 102 and the lower air chamber 103 are all installed in the factory. On site, only the bolts 5 need to be connected, the lower air chamber 103 is placed on the bearing surface, then the dust removal chamber 102 is inserted into the lower air chamber 103, the lower air chamber 103 and the dust removal chamber 102 are connected and fixed through the bolts 5 and the nuts, then the upper air chamber 101 is sleeved on the upper end of the lower air chamber 103 and is fixed through the bolts 5 and the nuts, and the upper air chamber 101, the dust removal chamber 102 and the lower air chamber 103 are sequentially communicated. The equipment installation is flexible, which greatly reduces the requirement for the site during construction, improves the construction progress, and needs to be explained that when the upper air chamber 101, the dust removal chamber 102 and the lower air chamber 103 are sleeved, the protruding structures at the end portions should be in close contact, so as to improve the stability and sealing performance of the whole.

[0037] Then, the flue gas enters the air inlet chamber 104, the filter screen 402 in the air inlet chamber 104 is used to filter large-particle impurities in the flue gas, when the gas passes through the air flow distribution plate 404, the air flow distribution plate 404 blocks most of the flue gas, forcing the flue gas to flow out from the through holes of one of the air flow distribution plates 404, and then flow along the flow guide plate 403, and then flow out from the other air flow distribution plate 404, improving the uniformity of the airflow, so that the airflow can be more uniformly discharged through the through holes on the air flow distribution plate 404, and the discharged gas enters the lower gas chamber 103, the dust removal chamber 102, the upper gas chamber 101 in turn, and is discharged from the exhaust pipe 7, the lower gas chamber 103 mainly plays a role of collecting the treated flue gas and discharging the condensed water that may be generated, and the water can be discharged from the drain pipe 6 after the valve is opened.

[0038] Then, the cathode wire 2 should be connected to the negative pole of the direct current power supply, when the power supply is working, a high voltage is applied to the cathode wire 2, and the gas around the cathode wire 2 is ionized under the action of the high voltage, generating a large number of electrons and positive ions, this area is the corona area, the electrons move towards the anode under the action of the electric field force, and the positive ions move towards the cathode or are carried away by the airflow, the inside of the dust removal chamber 102 is in a vertical honeycomb tube structure, and the honeycomb structure inside the dust removal chamber 102 is an anode, so that the anode is in a vertical honeycomb tube structure and is used for grounding to form zero potential, the role of the anode is to collect the dust particles charged by the cathode wire 2 and introduce them into the grounding system, there is a huge voltage difference between the cathode wire 2 and the anode, which forms a strong electric field between them, the direction of the electric field is from the cathode to the anode, under the action of the electric field, the electrons and positive ions move in opposite directions to form an electric current, this electric current flows in the dust-containing flue gas, so that the dust particles in the flue gas are charged to perform dust removal work, the honeycomb tube-shaped anode can increase the surface area of the electrode and improve the dust removal effect; moreover, after the flue gas uniformly passes through the air uniformizing device 4, when the flue gas enters the electric field area of the dust removal chamber 102, the airflow velocity and flow rate of each part can be ensured to be close, so that the electric field distribution is more uniform, in the uniform electric field, the corona area generated by the cathode wire 2 is more stable, and the generation and movement of electrons and ions are also more regular, thereby further improving the dust removal effect.

[0039] Finally, water is injected into the water delivery pipe 304 by a water pump, who in turn passes through the water delivery pipe 304, the water inlet B, the water inlet A10, the fixed cylinder 302, the longitudinal pipe 301, the horizontal pipe 305, and is sprayed from the plurality of spray heads 306, the sprayed water washes the cathode wire 2 and the honeycomb-shaped anode, then the outer motor drives the driving shaft 303 to rotate, the rotating shaft drives the longitudinal pipe 301 and the horizontal pipe 305 to rotate, the horizontal pipe 305 drives the plurality of spray heads 306 to rotate, thereby achieving the purpose of increasing the water spraying range and achieving the purpose of uniform water spraying, not only can avoid secondary dust raising, but also can realize cleaning the cathode wire 2 and the honeycomb-shaped anode, prevent dust from continuously adhering to the surface of the two, finally open the valve to drain the water.

[0040] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A bolt-connected wet electrostatic precipitator, comprising an external frame structure (12) and an internal chamber structure (1), characterized in that: The external frame structure (12) includes a fixed upper support (121) and a bottom support (122). The inner chamber structure (1) is fixedly installed inside the external frame structure (12). The inner chamber structure (1) includes an upper air chamber (101), a dust removal chamber (102), a lower air chamber (103), and an air inlet chamber (104) connected in sequence. The interior of the dust removal chamber (102) is a vertical honeycomb tube structure, and the honeycomb structure inside the dust removal chamber (102) is the anode. A cathode beam is installed inside the upper air chamber (101), and a cathode wire (2) is installed on the cathode beam. The cathode wire (2) extends vertically into the honeycomb tube of the dust removal chamber (102) and generates an electric field inside the honeycomb tube. A spraying device (3) for spraying is installed on the upper air chamber (101), and a uniform air distribution device (4) for evenly distributing flue gas is installed inside the air inlet chamber (104). The upper air chamber (101) and the upper air chamber (102) are respectively connected to the two ends of the dust removal chamber (102) by bolts (5) and nuts. The ends of the upper air chamber (101), the upper air chamber (102) and the dust removal chamber (102) are all provided with annular protrusion structures.

2. The bolt-connected wet electrostatic precipitator according to claim 1, characterized in that: The bottom of the lower air chamber (103) is connected to a drain pipe (6) for draining water, and one end of the drain pipe (6) is connected to a valve.

3. The bolt-connected wet electrostatic precipitator according to claim 1, characterized in that: The outer side of the upper air chamber (101) is connected to an exhaust pipe (7) for exhausting air.

4. The bolt-connected wet electrostatic precipitator according to claim 1, characterized in that: The cathode beam includes a cathode main beam (8) and a cathode secondary beam (9) fixedly installed on the cathode main beam (8). The cathode main beam (8) is fixedly connected to the upper gas chamber (101), and the cathode wire (2) is suspended on the cathode secondary beam (9).

5. A bolt-connected wet electrostatic precipitator according to claim 1, characterized in that: The number of cathode wires (2) is several and they are evenly distributed in the honeycomb tube of the dust removal chamber (102). A counterweight (11) is fixedly installed at the bottom end of the cathode wires (2).

6. A bolt-connected wet electrostatic precipitator according to claim 1, characterized in that: The spraying device (3) includes a longitudinal pipe (301), a fixed cylinder (302), a drive shaft (303), a water supply pipe (304), a horizontal pipe (305) sealed at both ends, and several nozzles (306) installed at the bottom of the horizontal pipe (305). The water supply pipe (304) is fixed to the upper air chamber (101) by a fixing block. The longitudinal pipe (301) is rotatably connected to the upper end of the upper air chamber (101). The longitudinal pipe (301) is connected to the horizontal pipe (305). A water inlet A (10) is opened inside the longitudinal pipe (301). A water inlet B is opened inside the fixed cylinder (302). The fixed cylinder (302) is rotatably connected to the longitudinal pipe (301) and the drive shaft (303), and is fixedly connected to the water supply pipe (304). The other end of the water supply pipe (304) is connected to an external water pump, and the drive shaft (303) is connected to an external motor.

7. A bolt-connected wet electrostatic precipitator according to claim 1, characterized in that: The air distribution device (4) includes a housing (401), a filter (402), several guide plates (403) and two airflow distribution plates (404). The airflow distribution plate (404) has several through holes distributed at equal intervals inside. The housing (401) is fixedly connected to the air inlet chamber (104). The filter (402) and the two airflow distribution plates (404) are both fixedly connected to the housing (401). Several guide plates (403) are located between the two airflow distribution plates (404) and are all fixedly connected to the two airflow distribution plates (404).

8. A bolt-connected wet electrostatic precipitator according to claim 1, characterized in that: The upper support (121) and the bottom support (122) each include several longitudinal bars (123) and several sets of transverse bars (124). The longitudinal bars (123) and transverse bars (124) form a matrix structure, and the transverse bars (124) have an I-shaped structure. The connector (125) is fixed to the connection between the longitudinal bars (123) and the transverse bars (124) by bolts.

9. A bolt-connected wet electrostatic precipitator according to claim 1, characterized in that: The upper support (121) and the bottom support (122) each include several sets of diagonal bars (126) and several angle irons (127). The angle irons (127) are fixed to the connection between the diagonal bars (126) and the longitudinal bars (123) and the transverse bars (124) by bolts. The diagonal bars (126) are I-shaped structures.

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