Pulverized coal fineness on-line measuring device

Abstract

The utility model discloses a pulverized coal fineness on-line measuring device relates to pulverized coal detection technical field, including pulverized coal pipeline, bolt and shock pad, the outside of pulverized coal pipeline top end and bottom end sleeve is equipped with the shell, the inner wall of shell is equipped with the sound insulation rubber layer, the detection head is inserted into the inside of plug-in end cylinder, and the plug-in end cylinder is equipped with the sound insulation rubber layer. The shock absorption effect of the contact end is ensured through the first shock absorption rubber ring, the outer portion, close to one end of the insertion end cylinder, of the pulverized coal pipeline, the insertion end cylinder and the detection line is covered with the shell, and transmission of external noise can be greatly reduced through the semicircular hoop plate and the sound insulation rubber layer in the shell. A semicircular damping rubber pad in the semicircular hoop plate and a damping pad at the end close to the sound insulation rubber layer are used for reducing vibration received by the pulverized coal pipeline, so that the detection head can carry out detection work in a good environment, interference of vibration and noise is avoided, it is ensured that detection data are closer to real data, and the detection efficiency is improved. And the device is convenient to disassemble and assemble and simple to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of pulverized coal detection, and particularly relates to an on-line measuring device for pulverized coal fineness. Background Technique

[0002] With the continuous development of the power industry, the measurement requirements for pulverized coal fineness are getting higher and higher. The on-line measurement technology for pulverized coal fineness by ultrasonic detection has been widely used in power plants with its unique advantages. This technology can not only improve the measurement accuracy and real-time performance of pulverized coal fineness, but also provide an important basis for combustion optimization and energy conservation and emission reduction in power plants. In the future, with the continuous progress of technology and the further reduction of costs, the on-line measurement technology for pulverized coal fineness by ultrasonic detection is expected to be popularized and applied in more fields. The on-line measurement technology for pulverized coal fineness by ultrasonic detection in power plants is an advanced non-contact measurement method, which has the advantages of strong penetration, wide frequency band, easy installation and wide application range. The following is a detailed description of this technology:

[0003] An ultrasonic sensor is used to emit ultrasonic waves into the pulverized coal pipeline. When the ultrasonic waves propagate in the pulverized coal, they will attenuate due to particle scattering and absorption. By measuring the intensity change of the ultrasonic signal before and after penetrating the pulverized coal, the attenuation coefficient can be calculated. This coefficient is related to the pulverized coal fineness. Combining with a mathematical model, the attenuation coefficient is converted into the specific value of the pulverized coal fineness, realizing non-contact and real-time on-line monitoring of the pulverized coal fineness. This method effectively avoids the problems caused by direct contact with the pulverized coal and improves the measurement accuracy and convenience.

[0004] In the process of implementing this solution, the inventor found that the following problems in the prior art have not been well solved: during the process of ultrasonic detection of pulverized coal fineness, the detection area will generate vibration and noise due to other equipment inside the power plant, such as motors, fans, pumps, etc. during operation. These vibrations and noises propagating to the ultrasonic detection area will interfere with the propagation and reception of ultrasonic signals. The noise may cover or distort the ultrasonic signals, making the received signals unclear or difficult to analyze, while the vibration may cause the position of the ultrasonic sensor to be unstable, thus affecting the signal emission and reception angles, and even changing the propagation path of the ultrasonic waves in the pulverized coal. These interference factors will increase the measurement error and reduce the detection accuracy. Content of the Utility Model

[0005] The main purpose of the utility model is to provide an on-line measuring device for pulverized coal fineness, which can effectively solve the problems in the background technique.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] An on-line measuring device for pulverized coal fineness, comprising a pulverized coal pipeline, bolts and shock pads. The outer parts of the top and bottom of the pulverized coal pipeline are sleeved with an outer shell. The inner wall of the outer shell is provided with a sound insulation rubber layer. The outer part of the pulverized coal pipeline between the outer shells is fixed with a plug-in end cylinder. A detection head is inserted into the inner part of the plug-in end cylinder. A shock-absorbing rubber ring I is sleeved on the outer wall of one end of the detection head inserted into the inner part of the plug-in end cylinder. One end of the detection head located outside the plug-in end cylinder is connected with a detection line. Side grooves are respectively drilled at both ends of the outer shell. Semi-circular hoop plates are respectively fixed on the outer sides of the outer shell at the positions of the side grooves. Semi-circular shock-absorbing rubber pads are arranged inside the semi-circular hoop plates and the side grooves.

[0008] Preferably, the outer shell and the sound insulation rubber layer, and the inner walls of the semi-circular hoop plates and the inner walls of the side grooves and the outer walls of the semi-circular shock-absorbing rubber pads are all adhesively connected.

[0009] Preferably, the two ends of the two semi-circular hoop plates perpendicular to each other at both ends are detachably connected by bolts.

[0010] Preferably, the inner wall of the semi-circular shock-absorbing rubber pad and the inner walls of both ends of the sound insulation rubber layer are respectively in contact with the outer wall of the pulverized coal pipeline.

[0011] Preferably, an outer wire groove is drilled at one end of the outer shell at the position of the detection line. An inner wire groove is drilled at the side wall of the sound insulation rubber layer at the position of the detection line. The detection line penetrates through and communicates with the outer wire groove and the inner wire groove respectively. A shock-absorbing rubber ring II is sleeved on the outer wall of the detection line at the position inside the outer wire groove. The outer wall of the shock-absorbing rubber ring II is respectively in contact with the inner wall of the outer wire groove of the outer shell.

[0012] Preferably, shock pads are adhesively connected to the adjacent ends of the outer shell. The adjacent sides of the shock pads are in contact.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The detection head is inserted into the inner part of the plug-in end cylinder, and the shock-absorbing effect of the contact end is ensured through the shock-absorbing rubber ring I. And at the outer positions of the pulverized coal pipeline, the plug-in end cylinder and the detection line near one end of the plug-in end cylinder, an outer shell and semi-circular hoop plates are sleeved. The sound insulation rubber layer inside the outer shell can greatly reduce the transmission of external noise, while the semi-circular shock-absorbing rubber pads inside the semi-circular hoop plates and the shock pads at the adjacent ends of the sound insulation rubber layer are used to reduce the vibration received on the pulverized coal pipeline, so that the detection head can perform detection work in a good environment, avoiding the interference of vibration and noise, ensuring that the detection data is closer to the real data, and the application is convenient for disassembly and assembly and simple to operate. Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of an on-line measuring device for pulverized coal fineness of the utility model;

[0016] Figure 2 Explosion structure schematic diagram of an on-line coal powder fineness measuring device of the present utility model;

[0017] Figure 3 Structure schematic diagram of the detection head of an on-line coal powder fineness measuring device of the present utility model being pulled out from the plug-in end cylinder;

[0018] Figure 4 Explosion structure schematic diagram between the semi-circular shock-absorbing rubber pad and the semi-circular hoop plate of an on-line coal powder fineness measuring device of the present utility model.

[0019] In the figure: 1, coal powder pipeline; 2, plug-in end cylinder; 3, detection head; 31, first shock-absorbing rubber ring; 4, detection line; 5, outer shell; 6, sound insulation rubber layer; 7, semi-circular hoop plate; 8, side groove; 9, semi-circular shock-absorbing rubber pad; 10, bolt; 11, outer wire groove; 12, inner wire groove; 13, second shock-absorbing rubber ring; 14, shock-absorbing pad. Specific implementation manner

[0020] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific implementation manners.

[0021] As Figures 1-4 shown, an on-line coal powder fineness measuring device includes a coal powder pipeline 1, a bolt 10 and a shock-absorbing pad 14. The outer parts of the top and bottom of the coal powder pipeline 1 are sleeved with an outer shell 5. The inner wall of the outer shell 5 is provided with a sound insulation rubber layer 6. The outer part of the coal powder pipeline 1 located between the outer shells 5 is fixed with a plug-in end cylinder 2. The inside of the plug-in end cylinder 2 is inserted with a detection head 3. The outer wall of one end of the detection head 3 inserted into the inside of the plug-in end cylinder 2 is sleeved with a first shock-absorbing rubber ring 31. One end of the detection head 3 located outside the plug-in end cylinder 2 is connected with a detection line 4. Side grooves 8 are respectively drilled at both ends of the outer shell 5. Semi-circular hoop plates 7 are respectively fixed on the outer sides of the outer shell 5 at the positions of the side grooves 8. Semi-circular shock-absorbing rubber pads 9 are respectively arranged inside the semi-circular hoop plates 7 and the side grooves 8.

[0022] Specifically, the outer shell 5 and the sound insulation rubber layer 6, and between the inner walls of the semi-circular hoop plates 7 and the side grooves 8 and the outer walls of the semi-circular shock-absorbing rubber pads 9 are all adhesively bonded.

[0023] Specifically, both ends of the two semi-circular hoop plates 7 perpendicular to each other are detachably connected by bolts 10, which is convenient for the disassembly and assembly of this application.

[0024] Specifically, the inner walls of the semi-circular shock-absorbing rubber pads 9 and the inner walls of both ends of the sound insulation rubber layer 6 are respectively in contact with the outer wall of the coal powder pipeline 1.

[0025] Specifically, an outer wire groove 11 is drilled at one end of the housing 5 located at the position of the detection line 4, and an inner wire groove 12 is drilled at the side wall of the sound insulation rubber layer 6 located at the position of the detection line 4. The detection line 4 is respectively penetrated and communicated with the outer wire groove 11 and the inner wire groove 12. A second shock-absorbing rubber ring 13 is sleeved on the outer wall of the detection line 4 at the position inside the outer wire groove 11. The outer wall of the second shock-absorbing rubber ring 13 is respectively in contact with the inner wall of the outer wire groove 11 of the housing 5, so as to prevent vibration from being transmitted to the detection line 4 through the housing 5.

[0026] Specifically, shock-absorbing pads 14 are bonded to one end of the housing 5 close to each other, and the sides of the shock-absorbing pads 14 close to each other are in contact. When installed on the pulverized coal pipeline 1, vibration transmission to the housing 5 is prevented. Moreover, the shock-absorbing pads 14 also need to be drilled with holes matching the outer wire groove 11 to avoid affecting the insertion of the second shock-absorbing rubber ring 13. These are conventional technical means and will not be elaborated in this application.

[0027] Working principle:

[0028] The detection head 3 is inserted into the inside of the socket end cylinder 2, and the shock-absorbing effect of the contact end is ensured through the first shock-absorbing rubber ring 31. And a housing 5 and a semi-circular hoop plate 7 are covered outside the pulverized coal pipeline 1, the socket end cylinder 2, and the detection line 4 at one end close to the socket end cylinder 2. The sound insulation rubber layer 6 inside the housing 5 can greatly reduce the transmission of external noise, and the semi-circular shock-absorbing rubber pad 9 inside the semi-circular hoop plate 7 and the shock-absorbing pads 14 at the ends close to each other of the sound insulation rubber layer 6 are used to reduce the vibration received when installed on the pulverized coal pipeline 1, so that the detection head 3 can perform detection work in a good environment, avoiding the interference of vibration and noise, ensuring that the detection data is closer to the real data, and this application is convenient for disassembly and assembly and simple to operate.

[0029] The circuits, electronic components, and control modules involved are all prior arts, which can be fully realized by those skilled in the art without further elaboration. The content protected by this utility model also does not involve improvements to software and methods.

[0030] The above shows and describes 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 by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of this utility model. Without departing from the spirit and scope of this utility model, this utility model will have various changes and improvements, and these changes and improvements all fall within the scope of this utility model claimed. The scope of protection claimed by this utility model is defined by the appended claims and their equivalents.

Claims

1. An on-line measuring device for fineness of pulverized coal, comprising a pulverized coal pipeline (1), bolts (10) and shock pads (14), characterized in that: The outer part of the top and bottom of the pulverized coal pipeline (1) is sleeved with a housing (5). The inner wall of the housing (5) is provided with a sound insulation rubber layer (6). The outer part of the pulverized coal pipeline (1) between the housings (5) is fixedly provided with a plug-in end cylinder (2). A detection head (3) is inserted into the inner part of the plug-in end cylinder (2). A shock-absorbing rubber ring one (31) is sleeved on the outer wall of one end of the detection head (3) inserted into the inner part of the plug-in end cylinder (2). One end of the detection head (3) located outside the plug-in end cylinder (2) is connected with a detection line (4). Side grooves (8) are respectively drilled at both ends of the housing (5). Semi-circular hoop plates (7) are respectively fixed on the outer side of the housing (5) at the positions of the side grooves (8). Semi-circular shock-absorbing rubber pads (9) are respectively arranged inside the semi-circular hoop plates (7) and the side grooves (8).

2. The on-line measuring device for pulverized coal fineness according to claim 1, wherein: The housing (5) and the sound insulation rubber layer (6), the inner walls of the semi-circular hoop plates (7) and the inner walls of the side grooves (8) and the outer walls of the semi-circular shock-absorbing rubber pads (9) are all adhesively connected.

3. The on-line measuring device for pulverized coal fineness according to claim 1, characterized in that: Both ends of the two semi-circular hoop plates (7) perpendicular to each other at both ends are detachably connected by bolts (10).

4. The on-line measuring device for pulverized coal fineness according to claim 1, characterized in that: The inner walls of the semi-circular shock-absorbing rubber pads (9) and the inner walls of both ends of the sound insulation rubber layer (6) are respectively in contact with the outer wall of the pulverized coal pipeline (1).

5. An on-line measuring device for fineness of pulverized coal according to claim 1, characterized in that: One end of the housing (5) at the position of the detection line (4) is drilled with an outer wire groove (11). The side wall of the sound insulation rubber layer (6) at the position of the detection line (4) is drilled with an inner wire groove (12). The detection line (4) penetrates and communicates with the outer wire groove (11) and the inner wire groove (12) respectively. A shock-absorbing rubber ring two (13) is sleeved on the outer wall of the detection line (4) at the position inside the outer wire groove (11). The outer wall of the shock-absorbing rubber ring two (13) is respectively in contact with the inner wall of the outer wire groove (11) of the housing (5).

6. The on-line measuring device for pulverized coal fineness according to claim 1, wherein: Shock pads (14) are adhesively connected to the adjacent ends of the housing (5), and the adjacent sides of the shock pads (14) are in contact with each other.

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