Fly ash sampling device for boiler of thermal power plant

Abstract

The utility model discloses a thermal power plant boiler fly ash sampling device, which belongs to the technical field of boiler fly ash sampling, and comprises a collecting cylinder, the top end of the outer surface of the collecting cylinder is in threaded connection with a cleaning assembly, and the bottom end of the outer surface of the collecting cylinder is fixedly connected with a sample changing assembly; the cleaning assembly is arranged, a lower moving plate moves downwards through a threaded rod, the inner wall of a collecting barrel is scratched through a rubber ring, and therefore fly ash in the collecting barrel and fly ash in the collecting barrel are collected at a time and prevented from being mixed into a next sample, cross contamination is caused, and the accuracy of next sampling is affected; the interior of the collecting barrel is comprehensively cleaned, the sampling accuracy is further ensured, through the arranged sample changing assembly, the collecting box collected on the upper layer is pushed out through a pushing block, and then the collecting box on the lower layer is pushed to the lower surface of the collecting barrel through a first spring to be attached to the lower surface of the collecting barrel, so that collection of a second group of samples is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to a boiler fly ash sampling technical field, concretely is boiler fly ash sampling device of thermal power plant. BACKGROUND

[0002] Thermal power plant utilizes fuel (such as coal, oil, natural gas) combustion to generate heat energy, and through boiler, water is heated into high-temperature high-pressure steam, drives steam turbine to generate electricity, and after fuel combustion in thermal power plant, fine solid particles are generated, composition is complex, mainly includes unburned fuel particles, minerals and heavy metals etc., boiler fly ash sampling device is used to collect and analyze fly ash generated in the process of boiler combustion to monitor fuel combustion efficiency, assess fly ash composition and understand harmful substance content, to ensure environmental protection and comply with relevant regulations.

[0003] After investigation, Chinese utility model discloses a kind of boiler fly ash sampling device of thermal power plant (publication number: CN219455622U), including sampling bucket, it is provided with first air inlet channel and first suction channel, sampling bucket bottom is provided with sampling bottle, first suction channel is provided with filter screen at one end in sampling bucket;Filter screen ash cleaning mechanism, it includes first mounting block, impeller and ash cleaning plate, first mounting block is fixedly connected with sampling bucket side wall, second suction channel is provided in first mounting block, second suction channel is connected with first suction channel, impeller is rotatably connected with first mounting block by pivot, impeller is located in second suction channel, ash cleaning plate is located in sampling bucket and is slidably connected with sampling bucket;And suction pump, it is connected with suction pipe, suction pump extracts gas in sampling bucket from suction pipe, drives impeller rotation, drives ash cleaning plate reciprocating cleaning fly ash on filter screen.

[0004] The above-mentioned patent although through suction pump, gas in sampling bucket is extracted from suction pipe, gas flow in second suction channel drives impeller rotation, impeller rotation drives ash cleaning plate reciprocating motion, ash cleaning plate can reciprocating cleaning fly ash on filter screen, avoids fly ash to block filter screen, ensures that suction pump can smoothly carry out suction, but, boiler fly ash sampling device can only extract one sample once, leads to limited sampling data, not easy to compare multiple groups of data, to possibly lead to sample data to exist error, in addition, fly ash remaining in sampling bucket is difficult to clean, increases potential cross-contamination risk, which can affect the accuracy of next sampling.

[0005] Therefore, the utility model provides boiler fly ash sampling device of thermal power plant to solve the above-mentioned problem. UTILITY MODEL CONTENTS

[0006] (1) technical problem solved

[0007] The utility model provides boiler fly ash sampling device of thermal power plant, aims at solving the problem proposed in background art.

[0008] (II) Technical Solution

[0009] To achieve the above object, the utility model provides the following technical scheme: including collection cylinder, the top end of collection cylinder outer surface is connected with cleaning assembly, the bottom fixed connection of collection cylinder outer surface has sample changing assembly,

[0010] The cleaning assembly includes a sealing cover, the inner side wall of the sealing cover is threadedly connected to the top end of the outer surface of the collection cylinder, the upper surface of the sealing cover is rotatably connected with a threaded rod, the top end of the threaded rod is fixedly connected with a rotating disc, the outer surface of the threaded rod is threadedly connected with a downward moving plate, and the outer surface of the downward moving plate is fixedly connected with a rubber ring.

[0011] As a preferred technical solution of the present application, the inner top wall of the sealing cover is fixedly connected with a sealing gasket, and the bottom end of the outer surface of the threaded rod is rotatably connected with a supporting rod.

[0012] As a preferred technical solution of the present application, the sample changing assembly includes a placing rack, the top end of the inner side wall of the placing rack is fixedly connected to the bottom end of the outer surface of the collection cylinder, the inner bottom wall of the placing rack is fixedly connected with a first spring, the top end of the first spring is fixedly connected with a stress plate, one side of the outer surface of the placing rack is fixedly connected with an expansion rack, one side of the expansion rack is fixedly connected with a second spring, one end of the second spring is fixedly connected with a pushing rod, and one end of the pushing rod is fixedly connected with a pushing block.

[0013] As a preferred technical solution of the present application, the upper surface of the stress plate is lapped with a collection box, and the upper surface of the collection box is fixedly connected with a sealing ring.

[0014] As a preferred technical solution of the present application, one side of the outer surface of the collection cylinder is fixedly connected with a sampling valve, and one side of the sampling valve is fixedly connected with a sampling pipe.

[0015] As a preferred technical solution of the present application, the other side of the outer surface of the collection cylinder is provided with a square groove, the inside of the square groove is fixedly connected with a mounting box, the inside of the mounting box is fixedly connected with a filter screen, and one side of the mounting box is fixedly connected with a suction pump.

[0016] (III) Beneficial Effects

[0017] 1. The cleaning assembly is provided, the downward moving plate is moved downward through the threaded rod, the inner wall of the collection cylinder is scratched by the rubber ring, the inside of the collection cylinder and the fly ash inside the collection cylinder are collected at one time, the fly ash is prevented from mixing into the sample next time, cross contamination is avoided, the accuracy of sampling next time is affected, the sealing cover can be rotated and taken out, the inside of the collection cylinder is cleaned comprehensively, and the sampling accuracy is further ensured.

[0018] 2, by setting the sample assembly, by the push block to push the upper layer of the collection box collected, and then by the first spring to push the lower layer of the collection box to the lower surface of the collection cylinder, and the lower surface of the collection cylinder is attached, so as to collect the second group of samples, convenient operation, easy to extract multiple samples, to compare the sample data, and ensure the accuracy of the sample data. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the fly ash sampling device of the thermal power plant boiler.

[0020] Figure 2 It is a structural schematic diagram of the fly ash sampling device of the thermal power plant boiler.

[0021] Figure 3 It is a structural schematic diagram of the fly ash sampling device of the thermal power plant boiler.

[0022] Figure 4 It is a structural schematic diagram of the fly ash sampling device of the thermal power plant boiler.

[0023] Figure 5 It is a structural schematic diagram of the fly ash sampling device of the thermal power plant boiler.

[0024] In the drawings:

[0025] 1, collection cylinder; 2, sealing cover; 3, threaded rod; 4, rotating disc; 5, downward moving plate; 6, sealing gasket; 7, support rod; 8, rubber ring; 9, placing rack; 10, first spring; 11, stress plate; 12, expansion rack; 13, second spring; 14, push rod; 15, push block; 16, collection box; 17, sealing ring; 18, sampling valve; 19, sampling tube; 20, mounting box; 21, filter screen; 22, air pump. DETAILED DESCRIPTION

[0026] The technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0027] The present application provides a fly ash sampling device for a thermal power plant boiler, as shown in the drawings, the fly ash sampling device for the thermal power plant boiler, comprising a collection cylinder 1, the top end of the outer surface of the collection cylinder 1 is threadedly connected with a cleaning assembly, and the bottom end of the outer surface of the collection cylinder 1 is fixedly connected with a sample changing assembly. Figures 1-5

[0028] ​The cleaning assembly comprises a sealing cover 2, the inner side wall of the sealing cover 2 is threadedly connected to the top end of the outer surface of the collecting cylinder 1, the upper surface of the sealing cover 2 is rotationally connected with a threaded rod 3, the top end of the threaded rod 3 is fixedly connected with a rotating disc 4, the outer surface of the threaded rod 3 is threadedly connected with a downward moving plate 5, the outer surface of the downward moving plate 5 is fixedly connected with a rubber ring 8, the threaded rod 3 is driven to rotate by the rotating disc 4, the downward moving plate 5 is moved downward, the inner wall of the collecting cylinder 1 is scraped by the rubber ring 8, thereby the fly ash in the collecting cylinder 1 and the inner wall thereof is collected at one time, the fly ash is prevented from mixing into the next sample, cross contamination is avoided, the accuracy of the next sampling is affected, the sealing cover 2 can be rotated, the device is taken out as a whole, the inside of the collecting cylinder 1 is cleaned comprehensively, and the sampling accuracy is further ensured.

[0029] The inner top wall of the sealing cover 2 is fixedly connected with a sealing gasket 6, the bottom end of the outer surface of the threaded rod 3 is rotationally connected with a supporting rod 7, the sealing gasket 6 guarantees the airtightness of the connection between the sealing cover 2 and the collecting cylinder 1, and the supporting rod 7 supports and limits the lower surface of the threaded rod 3, so that the threaded rod 3 is prevented from deviating during rotation.

[0030] The sample changing assembly comprises a placing rack 9, the top end of the inner side wall of the placing rack 9 is fixedly connected to the bottom end of the outer surface of the collecting cylinder 1, the inner bottom wall of the placing rack 9 is fixedly connected with a first spring 10, the top end of the first spring 10 is fixedly connected with a stress plate 11, one side of the outer surface of the placing rack 9 is fixedly connected with an expansion rack 12, one side of the expansion rack 12 is fixedly connected with a second spring 13, one end of the second spring 13 is fixedly connected with a pushing rod 14, and one end of the pushing rod 14 is fixedly connected with a pushing block 15, the pushing block 15 is pushed by the pushing rod 14, so that the upper collecting box 16 is pushed out, at the same time, the second spring 13 rebounds, the pushing rod 14 and the pushing block 15 are reset, then the first spring 10 pushes the stress plate 11, the lower collecting box 16 is pushed to the lower surface of the collecting cylinder 1 and is attached to the lower surface of the collecting cylinder 1, so as to collect the second group of samples, the operation is convenient, a plurality of groups of samples can be extracted, sample data comparison can be carried out, and the accuracy of sample data is ensured.

[0031] The upper surface of the stress plate 11 is overlapped with the collecting box 16, and the upper surface of the collecting box 16 is fixedly connected with a sealing ring 17, the collecting box 16 is convenient for collecting samples, and the sealing ring 17 is convenient for tightly attaching the upper surface of the collecting box 16 to the lower surface of the collecting cylinder 1, so as to prevent fly ash from floating out.

[0032] One side of the outer surface of the collecting cylinder 1 is fixedly connected with a sampling valve 18, and one side of the sampling valve 18 is fixedly connected with a sampling pipe 19, whether sampling is carried out is controlled by the sampling valve 18, quantitative sampling of fly ash is realized, and the sampling pipe 19 is used for guiding fly ash to flow into the inside of the collecting cylinder 1.

[0033] The other side of the outer surface of the collecting cylinder 1 is provided with a square groove, the inside of the square groove is fixedly connected with a mounting box 20, the inside of the mounting box 20 is fixedly connected with a filter screen 21, one side of the mounting box 20 is fixedly connected with a suction pump 22, the suction pump 22 facilitates the fly ash to enter the inside of the collecting cylinder 1, the filter screen 21 avoids the fly ash flying out from the suction pump 22 and avoids the fly ash from being blocked.

[0034] Working steps: firstly, opening the sampling valve 18, then starting the suction pump 22, so that the fly ash enters the inside of the collecting cylinder 1 through the sampling pipe 19, then, closing the sampling valve 18, and rotating the disc 4 to drive the threaded rod 3 to rotate, so that the descending plate 5 moves downward, and the rubber ring 8 scratches the inner wall of the collecting cylinder 1, so that the fly ash in the inside of the collecting cylinder 1 and the inner wall is collected at one time, secondly, the push rod 14 pushes the push block 15, so that the upper collecting box 16 is pushed out, at the same time, the second spring 13 rebounds, so that the push rod 14 and the push block 15 are reset, then, the first spring 10 pushes the stressed plate 11, so that the lower collecting box 16 is pushed to the lower surface of the collecting cylinder 1 and is attached to the lower surface of the collecting cylinder 1, so as to collect the second group of samples, finally, the threaded rotary sealing cover 2 drives the threaded rod 3 and the descending plate 5 to be extracted as a whole, so that the inside of the collecting cylinder 1 is cleaned.

[0035] The above is only the preferred embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A sampling device for fly ash from a boiler in a thermal power plant, comprising a collection cylinder (1), characterized in that: A cleaning component is threadedly connected to the top of the outer surface of the collection cylinder (1), and a sample changing component is fixedly connected to the bottom of the outer surface of the collection cylinder (1). The cleaning assembly includes a sealing cap (2), the inner wall of which is threaded to the top of the outer surface of the collection cylinder (1), a threaded rod (3) is rotatably connected to the upper surface of the sealing cap (2), a rotating disk (4) is fixedly connected to the top of the threaded rod (3), a lowering plate (5) is threaded to the outer surface of the threaded rod (3), and a rubber ring (8) is fixedly connected to the outer surface of the lowering plate (5).

2. The sampling device for fly ash from boilers in thermal power plants according to claim 1, characterized in that: A sealing gasket (6) is fixedly connected to the inner top wall of the sealing cover (2), and a support rod (7) is rotatably connected to the bottom end of the outer surface of the threaded rod (3).

3. The fly ash sampling device for thermal power plant boilers according to claim 1, characterized in that: The sample changing assembly includes a placement rack (9), the top of the inner sidewall of the placement rack (9) is fixedly connected to the bottom of the outer surface of the collection cylinder (1), a first spring (10) is fixedly connected to the inner bottom wall of the placement rack (9), a force plate (11) is fixedly connected to the top of the first spring (10), an extension rack (12) is fixedly connected to one side of the outer surface of the placement rack (9), a second spring (13) is fixedly connected to one side of the extension rack (12), a push rod (14) is fixedly connected to one end of the second spring (13), and a push block (15) is fixedly connected to one end of the push rod (14).

4. The fly ash sampling device for thermal power plant boilers according to claim 3, characterized in that: The upper surface of the load-bearing plate (11) is covered with a collection box (16), and a sealing ring (17) is fixedly connected to the upper surface of the collection box (16).

5. The fly ash sampling device for thermal power plant boilers according to claim 1, characterized in that: A sampling valve (18) is fixedly connected to one side of the outer surface of the collection cylinder (1), and a sampling tube (19) is fixedly connected to one side of the sampling valve (18).

6. The fly ash sampling device for thermal power plant boilers according to claim 1, characterized in that: A square groove is provided on the other side of the outer surface of the collection cylinder (1). An installation box (20) is fixedly connected inside the square groove. A filter screen (21) is fixedly connected inside the installation box (20). An air pump (22) is fixedly connected to one side of the installation box (20).

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