Boiler fly ash sampling device

Abstract

The utility model discloses a boiler fly ash sampling device, and relates to the field of fly ash sampling. The sampling box body is mounted on the smoke outlet pipe and is used for sampling smoke in the smoke outlet pipe; the bearing plate is mounted at the top of the sampling box body and extends into the sampling box body; the electric field assembly is mounted at the bottom of the bearing plate; the dust collection sleeve is mounted on the electric field assembly, and a plurality of dust collection channels are formed in the dust collection sleeve; the dust blocking assembly is mounted in the sampling box body; according to the utility model, fly ash in flue gas is adsorbed through the arrangement of the electric field assembly and then is collected through the dust collection sleeve, so that a fly ash sample can be accurately obtained, the interference of other components in the flue gas is avoided, and the sampling precision is greatly improved; the dust collection channel is arranged to provide space for accumulation of fly ash, meanwhile, the fly ash is prevented from falling down after the adsorption force is reduced, and the fly ash can be directly poured out when the dust collection sleeve is disassembled.

Description

Technical Field

[0001] This utility model relates to the field of fly ash sampling technology, and in particular to a boiler fly ash sampling device. Background Technology

[0002] Fly ash samplers, also known as fly ash sampling devices, enable isokinetic sampling of fly ash. These samplers are used for continuous isokinetic sampling of fly ash from the tail end of boiler flue gas in power plants, allowing for accurate detection of the carbon content in the fly ash. This provides a reliable basis for the scientific calculation of boiler thermal efficiency. The ease of fly ash sampling and the representativeness of the obtained samples directly affect the boiler's combustion adjustment methods, thus impacting the unit's economic efficiency.

[0003] Traditional fly ash sampling devices typically employ simple mechanical filtration or gravity settling methods, which suffer from low sampling efficiency, poor sample representativeness, and susceptibility to clogging. Furthermore, traditional devices are easily affected by other components in the flue gas during the sampling process, leading to inaccurate sampling results. Utility Model Content

[0004] This invention provides a boiler fly ash sampling device to solve the problem in the prior art where the sampling process is easily affected by other components in the flue gas, leading to inaccurate sampling results.

[0005] The technical problem solved by this utility model is achieved by the following technical solution:

[0006] A boiler fly ash sampling device, comprising:

[0007] Smoke outlet pipe;

[0008] The sampling box is installed on the smoke outlet pipe and is used to sample the smoke inside the smoke outlet pipe.

[0009] A receiving plate is installed on top of the sampling box and extends into the sampling box body;

[0010] The electric field assembly is installed at the bottom of the receiving plate;

[0011] A dust collection sleeve is installed on the electric field components, and multiple dust collection channels are provided on the dust collection sleeve;

[0012] The dust-blocking component is installed inside the sampling chamber.

[0013] Optionally, the electric field component includes:

[0014] The center plate is fixedly installed at the bottom of the receiving plate;

[0015] The cathode wire is fixed at the center of the central plate;

[0016] Multiple mounting blocks are provided and fixed to the bottom of the central plate in a circular array.

[0017] Multiple anode tubes are provided and fixedly installed at the bottom of the mounting block, with the cathode line as the center.

[0018] Optionally, a positioning sleeve is fixedly installed on the top of the dust collection sleeve and fitted onto the outside of the mounting block. The inner surface of the positioning sleeve is bonded with an elastic protrusion that matches the mounting block.

[0019] Optionally, the inner surface of the dust collection sleeve is bonded with cleaning rubber that contacts the outer surface of the anode tube.

[0020] Optionally, during disassembly, a dustproof tube is fitted onto the outer side of the dust collection sleeve, and the dustproof tube is fitted onto the outer side of the positioning sleeve.

[0021] Optionally, the sampling chamber includes:

[0022] The connector is used to connect and fix the smoke outlet pipe.

[0023] The lower housing is fixed to the top of the connector;

[0024] The upper housing is detachably and fixedly mounted on top of the lower housing;

[0025] The mounting channel is opened at the top of the upper housing and is used for the passage of the electric field assembly;

[0026] The sealing gasket is bonded to the inner surface of the mounting channel and contacts the outer surface of the receiving plate;

[0027] The exhaust pipe is fixed to the top of the upper housing.

[0028] Optionally, the dust-blocking component includes:

[0029] The filter screen is fixed inside the upper housing and fitted onto the outside of the center plate;

[0030] The dust collection plate is fixed inside the upper housing and located below the filter screen and anode tube.

[0031] The beneficial effects of this utility model are:

[0032] By setting up an electric field component to adsorb fly ash in the flue gas and then collecting it through a dust collection sleeve, fly ash samples can be accurately obtained, avoiding interference from other components in the flue gas and greatly improving sampling accuracy.

[0033] The dust collection channel provides space for dust accumulation, while preventing dust from falling downwards after the adsorption force decreases, and allowing the dust to be poured out directly when the dust collection sleeve is removed. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the structure of this utility model;

[0036] Figure 2 This is a schematic diagram of the sampling box structure of this utility model;

[0037] Figure 3 This is a schematic diagram of the electric field component structure of this utility model;

[0038] Figure 4 This is a schematic diagram of the dust collection sleeve structure of this utility model;

[0039] Figure 5 This is a schematic diagram of the dust-blocking component structure of this utility model.

[0040] In the diagram: 100, smoke outlet pipe;

[0041] 200. Sampling box body; 210. Socket joint; 220. Lower shell; 230. Upper shell; 240. Installation channel; 240, 250. Sealing gasket; 260. Exhaust pipe;

[0042] 300. Receiving plate;

[0043] 400. Electric field assembly; 410. Center plate; 420. Cathode wire; 430. Mounting block; 440. Anode tube;

[0044] 500. Dust collection sleeve; 510. Positioning sleeve; 520. Elastic protrusion; 530. Cleaning rubber; 540. Dustproof tube;

[0045] 600. Dust collection channel;

[0046] 700. Dust-blocking components; 710. Filter screen; 720. Dust collection plate. Detailed Implementation

[0047] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0048] Reference Figure 1-5 The boiler fly ash sampling device shown includes:

[0049] The large amount of high-temperature flue gas generated by fuel combustion will be discharged to the outside through the flue pipe 100;

[0050] The sampling box 200 is installed on the smoke outlet pipe 100 and is used to sample the smoke inside the smoke outlet pipe 100.

[0051] The receiving plate 300 is sealed and installed on the top of the sampling box 200 and extends into the sampling box 200, which not only serves to support and fix other components;

[0052] The electric field component 400 is installed at the bottom of the receiving plate 300. It generates an electric field of specific intensity and distribution, which enables fly ash particles in the flue gas to be charged and adsorbed.

[0053] A dust collection sleeve 500 is installed on the electric field component 400 to collect fly ash particles captured by the electric field, and the dust collection sleeve 500 has multiple dust collection channels 600.

[0054] The dust-blocking component 700 is installed inside the sampling chamber 200.

[0055] The working principle of this embodiment is as follows:

[0056] In use, the sampling box 200 is fixedly installed on the flue pipe 100, and the electric field component 400 is inserted downward into the sampling box 200. The receiving plate 300 is fixed on the sampling box 200. Then, the electric field component 400 is connected to the power supply and energized. The electric field component 400 will then adsorb the dust in the flue gas. After the dust is collected, the electric field component 400 is removed, and the dust collection sleeve 500 is removed from the electric field component 400 and the dust is collected.

[0057] The system uses an electric field component 400 to adsorb fly ash from the flue gas, which is then collected by a dust collection sleeve 500. This allows for accurate fly ash sampling, avoids interference from other components in the flue gas, and greatly improves sampling accuracy.

[0058] The dust collection channel 600 provides space for the accumulation of dust particles, while preventing them from falling downwards after the adsorption force decreases, and allowing the dust particles to be poured out directly when the dust collection sleeve 500 is removed.

[0059] The installation of the receiving plate 300 ensures the normal installation and disassembly of the electric field component 400, and guarantees the stability of the electric field component 400 during use.

[0060] In some embodiments of this utility model, reference is made to Figure 3 As shown, the electric field component 400 includes:

[0061] The center plate 410 is fixedly installed at the bottom of the receiving plate 300;

[0062] The cathode wire 420 is fixed at the center of the central plate 410 and releases electrons uniformly in the electric field, laying the foundation for the formation of the subsequent electric field and the realization of related functions.

[0063] The mounting blocks 430, which are multiple and arranged in a ring array, are fixed to the bottom of the central plate 410. They are made of engineering plastic with good insulation properties to avoid safety hazards such as leakage in the electric field environment.

[0064] Multiple anode tubes 440 are provided and fixedly installed at the bottom of the mounting block 430. The arrangement of the anode tubes 440 with the cathode line 420 as the center allows the electrons released from the cathode line 420 to move evenly to the surrounding anode tubes 440, thereby forming a stable and uniform electric field environment and realizing the expected function of the electric field component 400.

[0065] In some embodiments of this utility model, reference is made to Figure 4 As shown, a positioning sleeve 510 is fixedly installed on the top of the dust collection sleeve 500 and sleeved on the outside of the mounting block 430. The positioning sleeve 510 and the mounting block 430 fit very tightly, ensuring the stability of the dust collection sleeve 500. The inner surface of the positioning sleeve 510 is bonded with an elastic protrusion 520 that matches the mounting block 430. The fit not only enhances the connection stability between the positioning sleeve 510 and the mounting block 430, but also plays a role in buffering and shock absorption to a certain extent.

[0066] In some embodiments of this utility model, reference is made to Figure 4 As shown, the inner surface of the dust collection sleeve 500 is bonded with cleaning rubber 530 that contacts the outer surface of the anode tube 440.

[0067] When the dust collection sleeve 500 performs its corresponding action, the cleaning rubber 530 will thoroughly clean the outer surface of the anode tube 440, effectively scraping off the dust and impurities adsorbed on it, thereby ensuring the normal working performance of the anode tube 440 and maintaining the efficient and stable operation of the entire dust collection system.

[0068] In some embodiments of this utility model, reference is made to Figure 3 As shown, during disassembly, a dustproof tube 540 is sleeved on the outside of the dust collection sleeve 500, and the dustproof tube 540 is sleeved on the outside of the positioning sleeve 510.

[0069] Among them, the dustproof tube 540 has good sealing and flexibility, which can effectively prevent dust from escaping, minimize the risk of dust leakage, and ensure the efficiency and safety of disassembly work.

[0070] In some embodiments of this utility model, reference is made to Figure 2 As shown, the sampling chamber 200 includes:

[0071] The connector 210 is detachably connected and fixed to the smoke outlet pipe 100, and is used to connect the sampling box 200 and the smoke outlet pipe 100.

[0072] The lower housing 220 is fixed to the top of the connector 210;

[0073] The upper housing 230 is detachably and fixedly mounted on the top of the lower housing 220;

[0074] The mounting channel 240 is opened on the top of the upper housing 230 and is used for the passage of the electric field component 400, facilitating the passage of the electric field component 400 and ensuring the normal installation and fixation of the receiving plate 300.

[0075] The sealing gasket 250 is bonded to the inner surface of the mounting channel 240 and contacts the outer surface of the receiving plate 300. It has good elasticity and sealing performance and can achieve close contact with the outer surface of the receiving plate 300.

[0076] The exhaust pipe 260 is fixed to the top of the upper housing 230 and discharges the treated flue gas out of the sampling box 200.

[0077] The working principle of this embodiment is as follows:

[0078] During installation, the connector 210 is installed on the flue pipe 100, and the upper housing 230 and the lower housing 220 are fixed together with bolts. The flue gas enters the interior of the sampling box 200 through the connector 210 and is collected by the electric field component 400 and the dust collection sleeve 500. The collected gas is then discharged through the exhaust pipe 260, which can be connected to an air pump or a fan.

[0079] In some embodiments of this utility model, reference is made to Figure 5 As shown, the dust blocking assembly 700 includes:

[0080] The filter screen 710 is fixed inside the upper housing 230 and sleeved on the outside of the center plate 410 to perform preliminary filtration of larger dust particles in the air. At the same time, it also supports the center plate 410. Its fine mesh can effectively intercept dust particles without causing excessive obstruction to airflow.

[0081] The dust collection plate 720 is fixed inside the upper housing 230 and located below the filter screen 710 and the anode tube 440. During the dust handling process, even after being filtered by the filter screen 710, some fine dust particles still flow downwards with the airflow. When these dust particles reach the location of the dust collection plate 720, the dust collection plate 720 plays its important role by collecting these remaining dust particles.

[0082] The working method of this utility model:

[0083] Installation process: First, connect and fix the connector 210 to the smoke outlet pipe 100. Connect the upper housing 230 and the lower housing 220 with bolts. Then, install the electric field assembly 400 at the bottom of the receiving plate 300. Install the dust collection sleeve 500 on the outside of the mounting block 430 through the positioning sleeve 510, so that the elastic protrusion 520 fits tightly with the mounting block 430. Then, install the receiving plate 300 on the top of the sampling box 200 and extend the receiving plate 300 into the sampling box 200.

[0084] Working process: During boiler operation, flue gas containing fly ash enters the sampling chamber 200 through the flue gas outlet pipe 100. First, the flue gas enters the active area of ​​the electric field assembly 400. Under the action of the electric field force formed by the cathode wire 420 and the anode tube 440, the fly ash is adsorbed onto the surface of the anode tube 440. The fly ash enters the dust collection sleeve 500 through the dust collection channel 600 and is collected. After passing through the electric field assembly 400, large particles of impurities are filtered out by the filter screen 710, and the impurities fall onto the dust collection plate 720. Then, the treated flue gas is discharged through the exhaust pipe 260.

[0085] Removal process: First, close the relevant valves to stop the flue gas from entering. Disassemble the receiving plate 300 and remove the electric field assembly 400. Then, place the dustproof tube 540 over the outside of the dust collection sleeve 500. Disassemble the dust collection sleeve 500. During disassembly, clean the surface of the anode tube 440 with the cleaning rubber 530. Remove the dust collection sleeve 500 and dustproof tube 540 together to prevent fly ash leakage. Collect the fly ash collected inside the dust collection sleeve 500 and the impurities on the dust collection plate 720 for testing.

[0086] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A boiler fly ash sampling device, characterized by, The utility model relates to a kind of boiler fly ash sampling devices, including: Smoke pipe (100); Sampling box body (200) is installed on the smoke pipe (100), for sampling the flue gas inside the smoke pipe (100); Receiving plate (300) is installed on the top of sampling box body (200), and extend to sampling box body (200) inside; Electric field component (400) is installed on the bottom of receiving plate (300); Dust collecting sleeve (500) is installed on electric field component (400), and multiple dust collecting channels (600) are opened in dust collecting sleeve (500); Dust blocking component (700) is installed inside sampling box body (200).

2. The boiler fly ash sampling device according to claim 1, wherein: The electric field component (400) comprises: Center plate (410) is fixedly installed on the bottom of receiving plate (300); Cathode wire (420) is fixed at the center position of center plate (410); Mounting block (430) is provided with multiple and is annular array fixed on the bottom of center plate (410); Anode tube (440) is provided with multiple and is fixedly installed on the bottom of mounting block (430), and anode tube (440) is centered with cathode wire (420).

3. The boiler fly ash sampling device according to claim 2, wherein: The top of the dust collecting sleeve (500) is fixedly installed with a positioning sleeve (510) sleeved outside the mounting block (430), and the inner surface of the positioning sleeve (510) is bonded with elastic protrusions (520) matched with the mounting block (430).

4. The boiler fly ash sampling device according to claim 2, wherein: The inner surface of the dust collecting sleeve (500) is bonded with cleaning rubber (530) in contact with the outer surface of the anode tube (440).

5. The boiler fly ash sampling device according to claim 3, wherein: When disassembled, the outer side of the dust collecting sleeve (500) is sleeved with a dustproof tube (540), and the dustproof tube (540) is sleeved outside the positioning sleeve (510).

6. The boiler fly ash sampling device according to claim 2, wherein: The sampling box body (200) comprises: Adapter (210) is connected and fixed with smoke pipe (100); Lower shell (220) is fixed on the top of adapter (210); Upper shell (230) is detachably fixedly installed on the top of lower shell (220); Mounting channel (240) is opened on the top of upper shell (230), and is used for the passage of electric field component (400); Sealing gasket (250) is bonded on the inner surface of mounting channel (240), and is in contact with the outer surface of receiving plate (300); Exhaust duct (260) is fixed on the top of upper shell (230).

7. The boiler fly ash sampling device according to claim 6, wherein: The dust blocking component (700) comprises: Filter screen (710) is fixed inside upper shell (230), and is sleeved outside center plate (410); Dust collecting plate (720) is fixed inside upper shell (230), and is located below filter screen (710) and anode tube (440).

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