CN221157104U - Coal pulverizer powder pipe wind speed levelling device - Google Patents

Abstract

The utility model provides a wind speed leveling device for a coal mill powder pipe, which is arranged on the coal mill powder pipe and comprises a body with a channel, wherein the body is provided with an inlet and an outlet, the inlet and the outlet are respectively connected with the coal mill powder pipe, an elastic sealing mechanism is arranged between the inlet and the outlet of the channel, and the elastic sealing mechanism can adjust the wind resistance of the channel of the body so as to control the wind quantity of the pipe. Thereby achieving the purpose of controlling the whole set of equipment; because the elastic sealing mechanism is arranged, the sealing mechanism is opened by wind power, so that the purpose of controlling the pulverized coal in the pipeline is more accurately achieved.

Description

Coal pulverizer powder pipe wind speed levelling device

Technical Field

The utility model relates to the field of coal mill powder pipelines, in particular to a coal mill powder pipe wind speed leveling device.

Background

In thermal power generation, coal pieces transported from a coal yard are ground into coal dust through a coal mill, and a wind-powder mixture is blown into a hearth through each powder pipe by primary air for combustion. The wind speed of the wind-powder mixture entering the hearth and the deviation of the wind speed of each powder pipe have important influences on the combustion of the hearth, and the wind speed needs to be controlled at a proper value. In the initial stage of new thermal power plant construction, a primary wind speed leveling experiment is carried out, and the wind speed deviation of each powder pipe of the coal mill is controlled within a certain value. However, due to the conditions of coking and blocking of the burner, different lengths of the powder pipes and the like, the wind speed of each powder pipe is deviated, which is not beneficial to operation adjustment and cost reduction operation.

Disclosure of utility model

The utility model aims to solve the technical problem of providing a coal mill powder pipe wind speed leveling device which solves the problem of wind speed adjustment in a pipeline.

In order to solve the technical problems, the utility model provides a wind speed leveling device for a coal mill powder pipe, which is arranged on the coal mill powder pipe and comprises a body with a channel, wherein the body is provided with an inlet and an outlet, the inlet and the outlet are respectively connected with the coal mill powder pipe, an elastic sealing mechanism is arranged between the inlet and the outlet of the channel and can adjust the wind resistance of the channel of the body so as to control the wind quantity of the pipe, the elastic sealing mechanism comprises a sealing plate, a spring is arranged at the rear side of the sealing plate, an adjusting device is arranged at the rear side of the spring and can move back and forth so as to compress the spring, the sealing plate is pressed by the spring, thereby adjusting the wind resistance of the channel of the body, the adjusting device comprises an adjusting rod, the first end is provided with a pressure plate contacted with the spring, the second end extends out of the body, the adjusting rod is connected with the body through threads, a hollow structure is arranged in the adjusting rod, a connecting shaft can be coaxially inserted into the hollow structure and axially moves along the axial direction, an opening is also arranged in the radial direction of the adjusting rod, the opening is communicated with the hollow structure, a boss is arranged in the radial direction of the connecting shaft, the connecting shaft can be inserted into the opening, and the opening is smaller than the width of the channel of the body along the axial direction.

Preferably, a connecting shaft is arranged in the center of one side of the sealing plate, which is provided with a spring, and the spring is sleeved on the connecting shaft.

Preferably, the sealing plate corresponds to the inner diameter of the body passageway.

Preferably, the inlet and outlet of the body are arranged at right angles.

Preferably, a spigot is arranged on the channel of the body, and the sealing plate is clamped on the spigot.

The beneficial effects of the utility model are as follows: the utility model provides the air speed leveling device for the coal mill powder pipe, which can be used for adjusting the air quantity in the pipeline. Thereby achieving the purpose of controlling the whole set of equipment; because the elastic sealing mechanism is arranged, the sealing mechanism is opened by wind power, so that the purpose of controlling the pulverized coal in the pipeline is more accurately achieved.

Drawings

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:

FIG. 1 is a schematic overall oblique view of an embodiment of the present utility model;

FIG. 2 is an overall cross-sectional schematic of an embodiment of the utility model when not in operation;

FIG. 3 is an overall cross-sectional schematic of an embodiment of the utility model in operation;

FIG. 4 is an overall cross-sectional schematic of an embodiment of the present utility model when adjusting spring pressure;

fig. 5 is a schematic view of an embodiment of the present utility model when the apparatus is installed on a pipeline.

Reference numerals: a body 110; an inlet 111; an outlet 112; a spigot 113; a closing plate 120; a spring 130; a connection shaft 140; a boss 141; an adjusting lever 150; a first end 151; a second end 152; a hollow structure 153; an opening 154; a platen 160.

Detailed Description

Referring to fig. 1-5, the embodiment of the present application provides a technical solution: the utility model provides a coal pulverizer powder pipe wind speed levelling device, sets up on the coal pulverizer powder pipe, including the body 110 that has the passageway, body 110 has import 111 and export 112, import 111 and export 112 are connected with the coal pulverizer powder pipeline respectively, are equipped with elastic sealing mechanism between import 111 and the export 112 of passageway, and elastic sealing mechanism can adjust the windage of the passageway of body 110 to reach the amount of wind of control pipeline.

Preferably, the elastic sealing mechanism includes a sealing plate 120, a spring 130 is disposed at the rear side of the sealing plate 120, and an adjusting device is disposed at the rear side of the spring 130, and is capable of moving back and forth, so as to compress the spring 130, and press the sealing plate through the spring 130, so as to adjust the wind resistance of the channel of the body 110.

Preferably, a connecting shaft 140 is installed at the center of one side of the sealing plate 120 where the spring 130 is provided, and the spring 130 is sleeved on the connecting shaft 140.

Preferably, the adjusting means comprises an adjusting lever 150, the adjusting lever 150 having a first end 151 and a second end 152, the first end 151 being provided with a pressure plate 160 in contact with the spring 130, the second end 152 extending beyond the body 110.

The outer side of the adjusting rod 150 can be connected with a cylinder to move back and forth, or can be a structure for connecting a motor and a dynamic ball screw to move back and forth, so that the aim of automatic control can be achieved.

Preferably, the adjusting lever 150 is screwed with the body 110.

Preferably, the adjusting rod 150 is provided with a hollow structure 153 therein, the connecting shaft 140 can be coaxially inserted into the hollow structure 153 and move along the axial direction, the adjusting rod 150 is also provided with an opening 154 in the radial direction, the opening 154 is communicated with the hollow structure 153, the connecting shaft 140 is provided with a boss 141 in the radial direction, and the boss 141 can be inserted into the opening 154.

Preferably, the length of the opening 154 in the axial direction is less than the width of the channel of the body 110.

Preferably, the sealing plate 120 corresponds to the inner diameter of the channel of the body 110.

Preferably, the inlet 111 and the outlet 112 of the body 110 are arranged at right angles.

Preferably, a spigot 113 is provided in the passage of the body 110, and the sealing plate 120 is engaged with the spigot 113.

The device can push the sealing plate 120 to open the pipeline under the condition that the pipeline has no wind pressure and the elastic sealing mechanism is used for sealing the pipeline, so that the compression state of the spring is changed through the adjusting device of the leveling device, and finally the purpose of controlling the wind of the pipeline is achieved.

The above embodiments are only preferred embodiments of the present utility model, and should not be construed as limiting the present utility model, and the scope of the present utility model should be defined by the claims, including the equivalents of the technical features in the claims. I.e., equivalent replacement modifications within the scope of this utility model are also within the scope of the utility model.

Claims (5)

1. The utility model provides a coal pulverizer powder pipe wind speed levelling device, sets up on the coal pulverizer powder pipe, its characterized in that: the device comprises a body (110) with a channel, the body (110) is provided with an inlet (111) and an outlet (112), the inlet (111) and the outlet (112) are respectively connected with a coal mill powder pipeline, an elastic sealing mechanism is arranged between the inlet (111) and the outlet (112) of the channel, the elastic sealing mechanism can adjust the wind resistance of the channel of the body (110) so as to control the wind quantity of the pipeline, the elastic sealing mechanism comprises a sealing plate (120), a spring (130) is arranged at the rear side of the sealing plate (120), an adjusting device is arranged at the rear side of the spring (130), the adjusting device can move forwards and backwards so as to compress the spring (130) and press the sealing plate through the spring (130), the adjusting device comprises an adjusting rod (150), the adjusting rod (150) is provided with a first end (151) and a second end (152), a pressure plate (160) contacted with the spring (130) is arranged on the first end (151), the second end (152) extends out of the body (110), the adjusting rod (150) is connected with the body (110) through threads, a hollow structure (153) is arranged in the adjusting rod (150), a connecting shaft (140) can be inserted into the hollow structure (153) coaxially, and can move along the hollow structure (154) along the axial direction (153) and is also axially communicated with the hollow structure (153) and is opened along the hollow structure (153), a boss (141) is arranged on the connecting shaft (140) in the radial direction, the boss (141) can be inserted into the opening (154), and the length of the opening (154) along the axial direction is smaller than the width of the channel of the body (110).

2. The coal pulverizer powder pipe wind speed leveling device of claim 1, wherein: a connecting shaft (140) is arranged in the center of one side of the sealing plate (120) provided with the spring (130), and the spring (130) is sleeved on the connecting shaft (140).

3. The coal pulverizer powder pipe wind speed leveling device of claim 2, wherein: the sealing plate (120) corresponds to the inner diameter of the channel of the body (110).

4. The coal pulverizer powder pipe wind speed leveling device of claim 1, wherein: the inlet (111) and the outlet (112) of the body (110) are arranged at right angles.

5. The coal pulverizer powder pipe wind speed leveling device according to claim 4, wherein: a spigot (113) is arranged on the channel of the body (110), and the sealing plate (120) is clamped on the spigot (113).