Pressurizing measuring device for density of stored coal in coal yard

Abstract

The utility model discloses a pressurization measuring device for coal storage density in a coal yard. The pressurization measuring device comprises a measuring box for loading coal and a pressurization frame for pressurizing the coal, the upper end of the measuring box is open, and a movable cover plate is arranged in the upper opening of the measuring box; the pressurizing frame comprises a base and a cantilever which are oppositely arranged, and a telescopic pressurizing mechanism is arranged below the cantilever; when the measuring box filled with coal is arranged on the base, the telescopic pressurizing mechanism can push the movable cover plate to move downwards so as to pressurize the coal in the measuring box. A supporting column is arranged on the base, the suspension beam is installed on the supporting column, and the suspension beam can be adjusted on the supporting column in a lifting mode. A plurality of grading holes are vertically formed in the supporting column, mounting holes are formed in the suspension beam, and when fixing bolts are inserted into the grading holes and the mounting holes, the suspension beam is fixedly mounted on the supporting column. According to the utility model, after coal is loaded into the measuring container, the coal can be uniformly pressurized so as to improve the accuracy of coal density measurement.

Description

Technical Field

[0001] The utility model relates to the technical field of inventory counting in coal yards, in particular to a pressure measuring device for density of stored coal in coal yards. Background Art

[0002] In order to ensure the continuity of power generation, coal-fired power plants must maintain a certain amount of coal in stock based on coal supply capacity and the most economical solution. The inventory of coal in the coal yard includes two basic tasks: measuring the volume of the coal yard and determining the density of coal stored in the coal yard.

[0003] The density of coal is the mass of coal per unit volume, with units of g / cm3, kg / m3, t / m3. The density of coal should be called bulk density, formerly known as bulk density or bulk density. Bulk density refers to the ratio of the total mass of coal particles filled in a container by free stacking method to the volume. The determination of the density of coal stored in a coal yard is a very complicated task. It is the same as the principle of coal sampling. The true value of the bulk density of coal is difficult to obtain, so the goal is to get as close to the true value as possible.

[0004] At present, there are two main methods for measuring the density of coal stored in coal yards: one is the simulation method, and the other is the sinking tube method. The simulation method is applicable to all types of coal, especially to coal stored freely in coal yards. The simulation method requires the production of a metal container density measurement box. After the container is filled with coal, whether pressure should be applied and to what extent it should be applied should depend on the pressure of the coal stored in the coal yard. According to the different pressures, it can be divided into non-pressurized test, slightly pressurized test, and heavily pressurized test. When using the simulation method to measure bulk density, there is no need to select many measuring points on the coal yard, but to select representative coal stored in the coal yard, and factors such as coal type, ash content, and moisture content should be considered.

[0005] Pressurizing the density box is a complex and difficult to control process. Pressurizing is inconvenient. The manual pressurizing method of beating with a shovel is time-consuming and labor-intensive, and the pressurizing force is uncontrollable. Improvements are proposed. Summary of the invention

[0006] Purpose of the invention: In order to overcome the deficiencies in the prior art, the utility model provides a device for pressurizing the density of coal stored in a coal yard. After the coal is loaded into a measuring container, the coal can be uniformly pressurized to improve the accuracy of the coal density measurement.

[0007] Technical solution: To achieve the above-mentioned purpose, the utility model provides a coal yard storage density pressurized measuring device, comprising a measuring box for loading coal and a pressurized frame for pressurizing the coal; the upper end of the measuring box is open, and a movable cover is provided inside the upper opening of the measuring box; the pressurized frame comprises a base and a suspension beam arranged opposite to each other, and a telescopic pressurizing mechanism is provided under the suspension beam; when the measuring box loaded with coal is placed on the base, the telescopic pressurizing mechanism can push the movable cover downward to pressurize the coal in the measuring box.

[0008] Furthermore, a support column is provided on the base, the suspension beam is installed on the support column, and the suspension beam can be raised and lowered and adjusted on the support column.

[0009] Furthermore, two supporting columns are arranged opposite to each other on the base, and a slide rail is formed between the two supporting columns; the two ends of the suspension beam are respectively matched with the two supporting columns for vertical sliding, so that the suspension beam can be raised and lowered along the slide rail.

[0010] Furthermore, a plurality of graded holes are arranged vertically on the support column, and a mounting hole is provided on the suspension beam. When the fixing bolts are inserted into the graded holes and the mounting holes, the suspension beam is fixedly mounted on the support column.

[0011] Furthermore, the telescopic pressurizing mechanism is a jack with a pressure gauge.

[0012] Furthermore, two groups of lifting rings are connected below the suspension beam, and a transverse bolt is respectively provided on both sides of the upper end of the jack. The transverse bolts are inserted into the lifting rings and then screwed into nuts to be tightened, so as to install the jack below the suspension beam.

[0013] Furthermore, the shape of the movable cover is consistent with the shape of the upper opening of the measuring box, and the movable cover can be lifted and slid along the inner wall of the measuring box.

[0014] Furthermore, a handle is installed on the upper surface of the movable cover.

[0015] Furthermore, handles are respectively installed on both sides of the measuring box.

[0016] Beneficial effects: The utility model of the coal yard storage coal density pressurized measuring device places a measuring box filled with coal on a base, and pushes down a movable cover plate on the upper opening of the measuring box by a jack. It is easy to use and saves labor. Moreover, the movable cover plate can pressurize the coal evenly, thereby improving the accuracy of coal density measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Attached Figure 1 It is a schematic diagram of placing the measuring box on the base of the pressurized frame;

[0018] Attached Figure 2 This is a schematic diagram of the cantilever beam structure. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings.

[0020] As attached Figures 1 to 2 The coal yard storage density pressurized measuring device comprises a measuring box 1 for loading coal and a pressurized frame 2 for pressurizing coal. The measuring box 1 is a square box, the upper end of the measuring box 1 is open, and a movable cover plate 3 is arranged in the upper opening of the measuring box 1, and the movable cover plate 3 can move up and down in the measuring box 1.

[0021] The pressure frame 2 includes a base 4 and a suspension beam 5 which are arranged opposite to each other, and a telescopic pressure mechanism is arranged below the suspension beam 5. When the measuring box 1 filled with coal is placed on the base 4, the telescopic pressure mechanism can push the movable cover plate 3 to move downward in the measuring box 1, and the coal in the measuring box 1 is uniformly pressurized through the movable cover plate 3 to improve the accuracy of the coal density measurement. In addition, there is no need to manually shovel the coal, which can save labor.

[0022] As attached Figure 1 As shown in , a support column 6 is provided on the base 4, and a suspension beam 5 is installed on the support column 6, and the suspension beam 5 can be raised and lowered on the support column 6 to change the height of the telescopic pressurizing mechanism. After the height of the telescopic pressurizing mechanism is changed, the pressure applied by the telescopic pressurizing mechanism to the coal will also change accordingly, thereby realizing the graded measurement of the measuring device, so that it can adapt to different pressurization requirements of coal sealing measurement.

[0023] Two supporting columns 6 are arranged on the base 4, and a slide rail is formed between the two supporting columns 6. The two ends of the suspension beam 5 are respectively matched with the two supporting columns 6 for vertical sliding, so that the suspension beam 5 can be adjusted up and down along the slide rail. Figure 2 In one embodiment shown, the support column 6 is made of channel steel, the lower end of the support column 6 is welded and fixed on the base 4, and a tie rod 16 is welded between the base 4 and the support column 6 to enhance the strength of the support column 6. The notches of the two support columns 6 are opposite to each other, thereby forming a slide rail. The suspension beam 5 is also made of channel steel, and the end of the suspension beam 5 can move up and down in the inner groove of the support column 6.

[0024] The support column 6 is provided with a plurality of grading holes 7 arranged vertically, and the suspension beam 5 is provided with a mounting hole 10. When the fixing bolts 11 are inserted into the grading holes 7 and the mounting holes 10, the suspension beam 5 is fixedly mounted on the support column 6. By mounting the suspension beam 5 on different grading holes 7, the height of the suspension beam 5 can be adjusted, the pressure applied to the coal by the telescopic pressurizing mechanism can be changed, and the grading measurement of the measuring device can be realized.

[0025] The telescopic pressurizing mechanism is a jack 9 with a pressure gauge 8. The pressure applied by the jack 9 to the coal can be read through the pressure gauge 8, thereby reducing the error of manual pressurization.

[0026] Two sets of lifting rings 12 are connected to the lower part of the suspension beam 5. The lifting rings 12 are U-shaped and welded to the lower part of the suspension beam 5. There are two transverse bolts 13 on both sides of the upper end of the jack 9, and the two transverse bolts 13 are welded to both sides of the upper end of the jack 9. The transverse bolts 13 are inserted into the lifting rings 12 and then screwed into nuts to be locked, so that the jack 9 is installed under the suspension beam 5. When the jack 9 pressurizes the coal, the upper end of the jack 9 is against the suspension beam 5.

[0027] The shape of the movable cover 3 is consistent with the shape of the upper opening of the measuring box 1, and the movable cover 3 can be lifted and slid along the inner wall of the measuring box 1. Specifically, the measuring box 1 is a square box body, and the movable cover 3 is square. A handle 14 is installed on the upper plate surface of the movable cover 3 to facilitate lifting the movable cover 3. Handles 15 are installed on both sides of the measuring box 1 to facilitate moving the measuring box 1 into or out of the base 4.

[0028] The working method of the utility model is as follows: fill the measuring box 1 with coal, move the measuring box 1 onto the base 4, and then press the movable cover 3 onto the coal; then select a suitable grading hole 7, fix the suspension beam 5 on the corresponding grading hole 7 through the fixing bolt 11, and then manually start to operate the jack 9, so that the lower end of the jack 9 is pressed on the movable cover 3 accordingly, and the pressure applied by the jack 9 is read by the pressure gauge 8. The jack 9 gradually increases the pressure to a suitable size, and after a period of time, the jack 9 is released, the measuring box 1 is moved out, the movable cover 3 is removed, the distance of the coal from the box opening of the measuring box 1 after being compressed is measured, the volume of the coal is converted, and the mass of the coal is weighed to obtain the density of the coal.

[0029] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A pressure measuring device for coal density in a coal yard, characterized by: The invention comprises a measuring box (1) for loading coal and a pressurizing frame (2) for pressurizing the coal; the upper end of the measuring box (1) is open, and a movable cover plate (3) is arranged inside the upper opening of the measuring box (1); the pressurizing frame (2) comprises a base (4) and a suspension beam (5) arranged opposite to each other, and a telescopic pressurizing mechanism is arranged below the suspension beam (5); when the measuring box (1) loaded with coal is placed on the base (4), the telescopic pressurizing mechanism can push the movable cover plate (3) downward to pressurize the coal in the measuring box (1).

2. The device for measuring the density of coal stored in a coal yard under pressure according to claim 1 is characterized in that: The base (4) is provided with a support column (6), the suspension beam (5) is installed on the support column (6), and the suspension beam (5) can be raised and lowered and adjusted on the support column (6).

3. The device for measuring the density of coal stored in a coal yard under pressure according to claim 2 is characterized in that: Two supporting columns (6) are arranged opposite to each other on the base (4), and a slide rail is formed between the two supporting columns (6); the two ends of the suspension beam (5) are respectively matched with the two supporting columns (6) in a vertical sliding manner, so that the suspension beam (5) can be raised and lowered and adjusted along the slide rail.

4. The device for measuring the density of coal stored in a coal yard under pressure according to claim 2 is characterized in that: A plurality of graded holes (7) are arranged vertically on the support column (6), and a mounting hole (10) is provided on the suspension beam (5). When the fixing bolts (11) are inserted into the graded holes (7) and the mounting holes (10), the suspension beam (5) is fixedly mounted on the support column (6).

5. The device for measuring the density of coal stored in a coal yard under pressure according to claim 1, characterized in that: The telescopic pressurizing mechanism is a jack (9) with a pressure gauge (8).

6. The device for measuring the density of coal stored in a coal yard under pressure according to claim 5, characterized in that: Two groups of lifting rings (12) are connected below the suspension beam (5), and a transverse bolt (13) is respectively provided on both sides of the upper end of the jack (9). The transverse bolt (13) is inserted into the lifting ring (12) and then screwed into a nut to be locked, so that the jack (9) is installed below the suspension beam (5).

7. The device for measuring the density of coal stored in a coal yard under pressure according to claim 1, characterized in that: The shape of the movable cover plate (3) is consistent with the shape of the upper opening of the measuring box (1), and the movable cover plate (3) can be lifted and slid along the inner wall of the measuring box (1).

8. The device for measuring the density of coal stored in a coal yard under pressure according to claim 7, characterized in that: A handle (14) is installed on the upper surface of the movable cover plate (3).

9. The device for measuring the density of coal stored in a coal yard under pressure according to claim 1, characterized in that: Handles (15) are respectively installed on both sides of the measuring box (1).

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