CN218590790U

CN218590790U - Coal blockage early warning processing device for medium-speed coal mill

Info

Publication number: CN218590790U
Application number: CN202222091167.6U
Authority: CN
Inventors: 石玉; 郭盛发; 李强; 刘胜清; 李伟; 王泉康; 章全元
Original assignee: Huaneng Qinmei Ruijin Power Generation Co Ltd
Current assignee: Huaneng Qinmei Ruijin Power Generation Co Ltd
Priority date: 2022-08-09
Filing date: 2022-08-09
Publication date: 2023-03-10
Anticipated expiration: 2032-08-09

Abstract

The utility model belongs to the technical field of coal-fired power generation, a middle speed coal pulverizer coal blockage early warning processing apparatus is disclosed, including the pressure gauge that is used for monitoring coal breakage intraductal pressure, be used for dredging the dredging pipe of coal breakage pipe and be used for accomodating the fixing device of dredging pipe, it is right to be provided with on the fixing device spacing stop gear of dredging pipe, install on the fixing device and be used for receiving and releasing the winding mechanism of dredging pipe, the one end and the air compressor of dredging pipe are connected, the other end of dredging pipe is the closure state, the pressure gauge with winding mechanism and air compressor signal connection. The device solves the problem that the coal dropping pipeline of the medium-speed coal mill is not convenient to clean due to the influence of the pipe diameter and the depth of the coal dropping pipeline when the coal dropping pipeline is blocked, and improves the operation safety of the coal mill.

Description

Coal blockage early warning processing device for medium-speed coal mill

Technical Field

The utility model belongs to the technical field of coal-fired power generation, more specifically relates to a medium speed pulverizer coal blockage early warning processing apparatus.

Background

The medium speed coal mill is suitable for the powdering and milling operation of medium hardness materials such as soft coal and lean coal, and can be widely applied to a coal milling system in the industries of electric power, metallurgy, building materials, chemical engineering and the like, in particular to a blast furnace coal injection coal milling system which needs to use a large amount of soft coal. The coal is ground into coal powder in the coal mill, so that the coal powder can be used for subsequent processing and use, and the coal dropping pipe of the medium-speed coal mill can be blocked in the use process due to the conditions of high moisture content, large fineness of the coal powder, change of temperature in winter and summer, long storage time in a coal bunker, high proportion of coal slurry in the coal, coefficient of friction between the coal dropping pipe and the coal powder, gate structure and the like.

When the coal falling pipeline of medium speed coal pulverizer produces the jam under prior art, often need stop the coal pulverizer operation, the manual work is cleaned it, but receives the influence of coal falling pipeline pipe diameter and degree of depth, and the instrument is not convenient for stretch into and clears up to blockking up the position, and consuming time is hard, has increased the operation risk, has reduced coal pulverizer operational reliability.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a medium speed coal pulverizer coal blocking early warning processing apparatus, the coal breakage pipeline of having solved the medium speed coal pulverizer receives its pipe diameter and degree of depth influence to cause it to be not convenient for by the problem of clearance when producing the jam, improves the coal pulverizer operation security.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a medium speed coal mill coal blockage early warning processing device comprises a pressure gauge for monitoring the internal pressure of a coal dropping pipe, a dredging pipe for dredging the coal dropping pipe and a fixing device for accommodating the dredging pipe, wherein a winding mechanism for winding and unwinding the dredging pipe is mounted on the fixing device, one end of the dredging pipe is connected with an air compressor, and the other end of the dredging pipe is in a closed state; and the pressure gauge is in signal connection with the winding mechanism and the air compressor.

In some embodiments of the present application, a limiting mechanism for limiting the dredging pipe is disposed on the fixing device.

In some embodiments of this application, fixing device includes that base and symmetry set up two fixed plates on the base, winding mechanism installs on the fixed plate, dredge pipe sets up between two fixed plates and twines on the winding mechanism.

In some embodiments of the present application, the limiting mechanism includes an insertion seat, two ends of the insertion seat are respectively and fixedly connected to edges of the two fixing plates, and the insertion seat is provided with an insertion hole for the closed end of the dredging pipe to pass through.

In some embodiments of the present application, the limiting mechanism further includes a positioning sleeve, one end of the positioning sleeve is installed on the base through an extending bracket, and the other end of the positioning sleeve extends to the insertion opening, and the dredging pipe can penetrate through the positioning sleeve.

In some embodiments of the present application, an infrared sensor is installed on the positioning sleeve, and the infrared sensor is in signal connection with the winding mechanism and the air compressor.

In some embodiments of the application, the winding mechanism includes receiving and releasing motor, install the extension rod on receiving and releasing motor's the output shaft, receive and release motor and install one on the fixed plate, the extension rod is rotatable run through in two the fixed plate, dredge the pipe winding on the extension rod.

In some embodiments of the present application, the fixing plate is provided with an observation window for observing the state of the dredging pipe.

In some embodiments of this application, the fixed plate is the ring structure, dredge the pipe winding also be the ring form when on the winding mechanism, the diameter of fixed plate is greater than dredge the diameter of pipe.

In some embodiments of the present application, the dredging pipe is a rubber pipe, and a wear-resistant layer is disposed on a surface of the dredging pipe.

The dredging pipe is internally provided with the dredging pipe, high-pressure gas is introduced into the dredging pipe, and the retraction mechanism is arranged to assist in releasing or retracting the dredging pipe, so that the dredging pipe can be flexibly moved in a coal mill coal falling pipeline, and the coal slag generated in the coal mill coal falling pipeline is conveniently ejected out of the dredging pipe for cleaning; the dredging pipe is positioned and shielded by the two fixing plates and the inserting seat arranged on the fixing device, so that the dredging pipe can be prevented from being loosened, falling or excessively bent to influence the flow of air flow in the dredging pipe; through the position matching between the positioning sleeve and the inserting seat, the dredging pipe can be guided and limited in the moving process, and the driving movement of the dredging pipe is smooth; through installing of infrared sensor on the position sleeve to and seting up of observation window on the fixed plate, the staff of being convenient for looks over and takes notes the removal length and the user state of dredging the pipe, thereby is convenient for control and record its user state and clear stifled region in the coal pulverizer coal dropping pipe way.

Drawings

Fig. 1 is a schematic structural view of the coal blockage early warning processing device of the medium speed coal mill of the utility model;

fig. 2 is an explosion diagram of the coal blockage early warning processing device of the medium speed coal mill of the utility model;

fig. 3 is the structure front view of the coal blockage early warning processing device of the medium speed coal mill of the utility model.

In the figure, 1, a base; 2. a support frame; 3. a fixing plate; 4. retracting and releasing a motor; 5. dredging the pipe; 6. a fixing hole; 7. an insertion seat; 8. an extension bracket; 9. positioning the sleeve; 10. an infrared sensor; 11. and (6) an observation window.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

As shown in fig. 1 and fig. 2, in some embodiments of the present application, a medium speed coal mill coal blockage early warning processing apparatus includes a base 1, two symmetrical support frames 2 are fixedly disposed on two opposite edges of the base 1, a fixing plate 3 is fixedly disposed at the top of each support frame 2, the two fixing plates 3 are also symmetrically disposed, fixing holes 6 penetrating through the base 1 are disposed at four corners of the base 1, and screws penetrating through the fixing holes 6 and fixing the base 1 on a coal mill coal dropping pipeline are disposed in the fixing holes 6.

One of the fixing plates 3 is provided with a retracting motor 4 in a screwed manner, an extension rod is coaxially and fixedly arranged at the output end of the retracting motor 4 and can rotatably penetrate through the two fixing plates 3, a group of dredging pipes 5 are arranged between the two groups of fixing plates 3, the dredging pipes 5 are coiled on the extension rod, the extension rod can be driven to rotate by starting the retracting motor 4, the dredging pipes 5 wound on the extension rod can be released and can also be wound, one ends of the dredging pipes 5 are communicated with the output end of an air compressor, the other ends of the dredging pipes 5 are free ends and are in a closed state, when the coal conveying pipes need to be cleaned, the air compressor is started, the dredging pipes 5 are expanded under the influence of input high-pressure airflow, meanwhile, the dredging pipes 5 are released by starting the motor 4, the free ends of the dredging pipes 5 extend into the coal mill coal falling pipeline, and the high-pressure airflow can be input into the inner cavity of the dredging pipes 5 to push the dredging pipes to keep the dredging pipes to expand and apply force, the dredging pipes 5 can be flexibly moved in the coal mill coal falling pipeline, and the coal mill coal slag in the coal mill coal falling pipeline can be conveniently blocked after the dredging pipes 5 are cleaned.

It should be noted that, in order to prolong the service life of the device, the dredging pipe 5 is made of a soft rubber pipe, the end of the dredging pipe 5 which is not communicated with the air compressor has no opening, and the inner cavity of the dredging pipe 5 is not communicated with the outside air, so that the input airflow in the dredging pipe 5 can keep bulging, and can adapt to a coal dropping pipeline, and the influence of gas leakage on the movement and force application dredging of the dredging pipe 5 is avoided.

It should be further noted that, in order to make the driving of device use comparatively stably, fixed plate 3 sets up to the ring form, and the diameter of fixed plate 3 is greater than or equal to dredging pipe 5 and coils the diameter on the extension rod, and the rigid coupling has an insertion seat 7 between two fixed plates 3, the insertion seat has seted up the patchhole on 7, it is intraductal that the free end of dredging pipe 5 passes the back and stretches into the coal breakage from the patchhole, fix a position the shade through two sets of fixed plates 3 and insertion seat 7 to dredging pipe 5, make dredging pipe 5 can keep between two sets of fixed plates 3 when placing or using, avoid it to produce not hard up to drop or excessively buckle the flow that influences its inside air current.

For further optimizing above-mentioned embodiment, the middle part spiral shell on base 1 surface is equipped with the pressure gauge, and the detection end of pressure gauge stretches into to the coal pulverizer coal pipe way that falls, monitors whether the change of pressure produces the jam through pressure gauge on the coal pulverizer and the pressure gauge monitoring coal pipe on the base 1, and when great pressure difference appears or stir, the pressure gauge sends the signal and starts air compressor and receive and release motor 4.

In order to further optimize the above embodiment, an extension bracket 8 is fixedly arranged on the base 1, the extension bracket 8 extends to a position right below the insertion seat 7, a positioning sleeve 9 with a height matched with a distance between the extension bracket 8 and the insertion seat 7 is fixed on the extension bracket 8, the positioning sleeve 9 is set to be a hard tubular structure, the inner diameter of the positioning sleeve 9 is matched with the pipe diameter of the dredging pipe 5, and the dredging pipe 5 can be guided and limited in the moving process through the position matching between the positioning sleeve 9 and the insertion seat 7, so that the driving movement of the dredging pipe 5 is smoother.

In order to facilitate the monitoring and the use of the device, a group of infrared sensors 10 are screwed on the top of the outer side wall of the positioning sleeve 9, the detection ends of the infrared sensors 10 penetrate through the outer wall of the positioning sleeve 9 and extend into the inner cavity of the positioning sleeve 9, and when the device is used, the time of shielding infrared rays irradiated by the detection ends of the infrared sensors 10 and the rotating speed of the retraction motor 4 can be measured to calculate the release moving length of the dredging pipe 5 so as to help workers to control the dredging area.

In order to further optimize the above embodiment, as shown in fig. 3, an observation window 11 penetrating through the fixing plate 3 is formed on the fixing plate 3, and a worker can conveniently check and record the moving length and the use state of the dredging pipe 5 through the observation window 11, so as to conveniently control and record the use state and the blockage clearing area of the dredging pipe in the coal mill coal dropping pipeline.

In order to further optimize the above embodiment, the outer surface of the dredging pipe 5 is provided with a wear-resistant layer covering the dredging pipe, so that the abrasion or scratch caused by the coal cinder or the inner wall of the coal dropping pipeline is reduced.

It should be noted that, the electrical components in the present invention are all electrically connected to the external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.

To sum up, the utility model provides a medium speed coal pulverizer coal blockage early warning processing apparatus, monitor when the coal pulverizer with the pressure gauge on this device that the coal breakage intraductal pressure great pressure differential appears or when stirring, start air compressor and receive and release motor 4, it can drive the extension rod rotation to receive and release the extension rod 5 between two sets of fixed plates 3, at this moment, it can enough receive the influence bloated of the high-pressure draught air of input simultaneously and pass and insert seat 7 and position sleeve 9 and stretch into to the coal pulverizer coal breakage pipeline in to receive and release the extension rod 4 output, under the winding release of high-pressure draught air's drive and dredging pipe 5 is supplementary, make dredging pipe 5 confined one end can push up in the coal pulverizer coal breakage pipeline and move the cinder removal and dredge, can measure the infrared ray that infrared ray sensor 10 detected the end shines and calculate the release removal length of dredging pipe 5 with the rotational speed of receiving and releasing motor 4 this moment, with the region of help staff control mediation, and can utilize observation window 11 that fixed plate 3 surfaces were seted up to look over simultaneously and look over the user state of dredging pipe 5.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be considered as the protection scope of the present invention.

Claims

1. A medium-speed coal mill coal blockage early warning processing device is characterized by comprising a pressure gauge for monitoring the internal pressure of a coal dropping pipe, a dredging pipe for dredging the coal dropping pipe and a fixing device for accommodating the dredging pipe, wherein a winding mechanism for winding and unwinding the dredging pipe is installed on the fixing device, one end of the dredging pipe is connected with an air compressor, and the other end of the dredging pipe is in a closed state; and the pressure gauge is in signal connection with the winding mechanism and the air compressor.

2. The medium speed coal mill coal blockage early warning processing device according to claim 1, wherein a limiting mechanism for limiting the dredging pipe is arranged on the fixing device.

3. The medium speed coal mill coal blockage warning device according to claim 2, wherein the fixing device comprises a base and two fixing plates symmetrically arranged on the base, the winding mechanism is arranged on the fixing plates, and the dredging pipe is arranged between the two fixing plates and wound on the winding mechanism.

4. The coal blockage warning device of the medium speed coal mill as claimed in claim 3, wherein the limiting mechanism comprises an insertion seat, two ends of the insertion seat are respectively and fixedly connected to the edges of the two fixing plates, and the insertion seat is provided with an insertion hole for the closed end of the dredging pipe to pass through.

5. The medium speed coal mill coal blockage early warning processing device according to claim 4, wherein the limiting mechanism further comprises a positioning sleeve, one end of the positioning sleeve is mounted on the base through an extension bracket, the other end of the positioning sleeve extends to the insertion opening, and the dredging pipe can penetrate through the positioning sleeve.

6. The medium speed coal mill coal blockage early warning processing device according to claim 5, wherein an infrared sensor is mounted on the positioning sleeve, and the infrared sensor is in signal connection with the winding mechanism and the air compressor.

7. The medium speed coal mill coal blockage early warning processing device according to claim 3, wherein the winding mechanism comprises a winding and unwinding motor, an extension rod is mounted on an output shaft of the winding and unwinding motor, the winding and unwinding motor is mounted on one of the fixing plates, the extension rod rotatably penetrates through the two fixing plates, and the dredging pipe is wound on the extension rod.

8. The medium speed coal mill coal blockage early warning processing device according to claim 3, wherein an observation window for observing the state of the dredging pipe is arranged on the fixing plate.

9. The medium speed coal mill coal blockage early warning processing device according to claim 3, wherein the fixing plate is of a circular ring structure, the dredging pipe is also of a circular ring shape when wound on the winding mechanism, and the diameter of the fixing plate is larger than that of the dredging pipe.

10. The medium speed coal mill coal blockage early warning processing device according to claim 1, wherein the dredging pipe is a rubber pipe, and a wear-resistant layer is arranged on the surface of the dredging pipe.