A CO gas concentration measuring device

Abstract

The utility model relates to measuring device technical field discloses a CO gas concentration measuring device, including coal mill shell, sampling subassembly, sampling subassembly sets up on coal mill shell, sampling subassembly includes riser, riser fixedly connected on the front surface of coal mill shell, the inside of riser and coal mill shell is communicated, the front surface fixedly connected with second fixed flange of riser, the front surface of second fixed flange is seted up with four first mounting holes, four first mounting holes all penetrate the rear surface of second fixed flange, the front surface of second fixed flange is provided with first fixed flange, the front surface of first fixed flange is seted up with four second mounting holes, through setting sampling subassembly on coal mill shell, sampling subassembly can carry out the collection to the air in the inside of coal mill on line, and then can realize the on -line CO gas measurement analysis to coal mill, and then improve the safety of coal mill when producing.

Description

Technical Field

[0001] This utility model relates to the field of measuring device technology, specifically a CO gas concentration measuring device. Background Technology

[0002] The coal processing and use process, including transportation, pulverization and storage, all pose fire risks. When coal comes into contact with air, it is oxidized to form CO gas and carbon, along with the generation of heat. If this heat cannot be dissipated in time, it will eventually develop into combustion, releasing a large amount of CO gas. If CO gas accumulates in a confined space, there is a risk of explosion, causing property damage and personal injury. Therefore, a CO gas concentration measuring device is needed. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this utility model provides a CO gas concentration measuring device, which solves the problem that when coal comes into contact with air, it is oxidized to form CO gas and carbon, accompanied by the generation of heat. If this heat cannot be dissipated in time, it will eventually develop into combustion, releasing a large amount of CO gas. If CO gas accumulates in a limited space, there is a risk of explosion, causing property damage and personal injury.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this utility model provides the following technical solution: a CO gas concentration measuring device, including a coal mill casing;

[0007] A sampling assembly is installed on the outer shell of the coal mill. The sampling assembly includes a riser, which is fixedly connected to the front surface of the outer shell of the coal mill.

[0008] The riser is connected to the interior of the coal mill shell, and a second fixed flange is fixedly connected to the front surface of the riser. The front surface of the second fixed flange has four first mounting holes.

[0009] The four first mounting holes all penetrate the rear surface of the second fixed flange, and the front surface of the second fixed flange is provided with the first fixed flange.

[0010] Preferably, the front surface of the first fixed flange is provided with four second mounting holes, all of which penetrate the rear surface of the first fixed flange, and bolts are provided on the inner walls of the four second mounting holes.

[0011] Preferably, the rear ends of the four bolts extend out of the inner wall of the corresponding first mounting hole, and the first fixed flange and the second fixed flange are fixed together by the four bolts.

[0012] Preferably, a probe is fixedly mounted on the front surface of the first fixed flange, the rear end of the probe extends through the rear surface of the first fixed flange, and a sampling tube is fixedly mounted on the rear surface of the probe.

[0013] Preferably, the rear end of the sampling tube extends into the interior of the riser, and a filter element is provided on the sampling tube.

[0014] Preferably, the front surface of the coal mill shell is fixedly connected to two fixing brackets, and the opposite sides of the two fixing brackets are fixedly connected to a circular fixing plate. The circular fixing plate has through holes and four fixing holes arranged in a cross shape.

[0015] Preferably, the outer wall of the riser is fixedly fitted with a fixing sleeve, and the front surface of the fixing sleeve is fixedly connected with four fixing rods arranged in a cross shape.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, the present invention provides a CO gas concentration measuring device, which has the following beneficial effects:

[0018] 1. This CO gas concentration measuring device, by setting a sampling component on the outer shell of the coal mill, can collect air inside the coal mill online, thereby enabling online CO gas measurement and analysis of the coal mill, and thus improving the safety of the coal mill during production.

[0019] 2. This CO gas concentration measuring device uses a circular fixing plate that is fitted onto the outer wall of the riser through a through hole, and four fixing rods that are inserted into the inner walls of four fixing holes. Finally, two fixing brackets are welded to the outer wall of the coal mill casing, thereby supporting the riser and improving its stability during long-term use. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the CO gas concentration measuring device of this utility model;

[0021] Figure 2 This is a schematic diagram showing the connection between the fixing rod and the fixing sleeve of this utility model;

[0022] Figure 3 This is a schematic diagram of the entire utility model from the right side.

[0023] Figure 4 This is a schematic diagram showing the connection between the first fixed flange and the sampling tube of this utility model;

[0024] Figure 5 This is a schematic diagram of the measurement process flow of this utility model.

[0025] In the diagram: 1. Coal mill casing; 2. Fixing frame; 3. Riser; 4. Probe; 5. First fixing flange; 6. Second fixing flange; 7. Circular fixing plate; 8. Fixing sleeve; 9. Fixing rod; 10. First mounting hole; 11. Fixing hole; 12. Second mounting hole; 13. Sampling tube; 14. Through hole. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-5 This utility model provides a new technical solution: a CO gas concentration measuring device, including a coal mill shell 1 and a sampling component. The sampling component is disposed on the coal mill shell 1 and includes a riser 3, which is fixedly connected to the front surface of the coal mill shell 1.

[0028] Among them, the riser 3 is connected to the interior of the coal mill shell 1, and the front surface of the riser 3 is fixedly connected to the second fixed flange 6. The front surface of the second fixed flange 6 is provided with four first mounting holes 10.

[0029] The four first mounting holes 10 all penetrate the rear surface of the second fixed flange 6, and the front surface of the second fixed flange 6 is provided with the first fixed flange 5.

[0030] Furthermore, the front surface of the first fixed flange 5 is provided with four second mounting holes 12, all of which penetrate the rear surface of the first fixed flange 5, and bolts are provided on the inner walls of the four second mounting holes 12.

[0031] Furthermore, the rear ends of the four bolts extend out of the inner wall of the corresponding first mounting hole 10, and the first fixed flange 5 and the second fixed flange 6 are fixed together by the four bolts.

[0032] Furthermore, a probe 4 is fixedly installed on the front surface of the first fixed flange 5, the rear end of the probe 4 extends through the rear surface of the first fixed flange 5, and a sampling tube 13 is fixedly installed on the rear surface of the probe 4.

[0033] Furthermore, the rear end of the sampling tube 13 extends into the interior of the riser 3, and a filter element is provided on the sampling tube 13.

[0034] Furthermore, two fixing brackets 2 are fixedly connected to the front surface of the coal mill housing 1, and a circular fixing plate 7 is fixedly connected to the opposite side of the two fixing brackets 2. The circular fixing plate 7 has through holes 14 and four fixing holes 11 arranged in a cross shape.

[0035] Furthermore, a fixing sleeve 8 is fixedly fitted onto the outer wall of the riser 3, and four fixing rods 9 arranged in a cross shape are fixedly connected to the front surface of the fixing sleeve 8.

[0036] Furthermore, when using the CO gas concentration measuring device, when installing the riser 3 as a whole, the riser 3 is first fixedly connected to the front surface of the coal mill housing 1. Then, the circular fixing plate 7 is sleeved on the outer wall of the riser 3 through the through hole 14, and the four fixing rods 9 are inserted into the inner wall of the four fixing holes 11. Finally, the two fixing brackets 2 are welded to the outer wall of the coal mill housing 1, thereby supporting the riser 3 and improving the stability of the riser 3 during long-term use.

[0037] Then, the sampling tube 13 is inserted into the interior of the riser 3, so that the second fixed flange 6 and the first fixed flange 5 are fitted together, and the four first mounting holes 10 and the four second mounting holes 12 are aligned. Then, it is fixed with four fixing bolts to complete the overall installation of the riser 3.

[0038] The mixture of coal powder and air inside the coal mill enters the sampling tube 13. The filter element on the sampling tube 13 filters the coal powder, while the gas is input to the probe 4. The probe 4 then inputs the collected gas into the DK-MCJ sampling and analysis system to measure and analyze the CO gas.

[0039] Among them, by setting a sampling component on the outer shell 1 of the coal mill, the sampling component can collect the air inside the coal mill online, thereby enabling online CO gas measurement and analysis of the coal mill, and thus improving the safety of the coal mill during production.

[0040] The sampling probe draws in sample gas (a mixture of pulverized coal and air), which enters the gas cooler inside the analyzer for cooling, drying, and dust removal. Then, it passes through a secondary particulate filter to remove fine particles.

[0041] 1. Sampling probe

[0042] The sampling probe should be installed near the pulverized coal outlet (top of the coal mill) in an area without moving parts. First, weld the flange adapter to the riser, with a length not exceeding 75mm.

[0043] The probe's outer protective sleeve is made of weld overlay alloy, which has high wear and corrosion resistance. The sleeve opening faces away from the coal powder flow direction, and the inside is a stainless steel powder sintered filter rod, which effectively filters out particles larger than 20um.

[0044] 2 Backflush device

[0045] A three-way ball valve is connected to the probe's tail. During normal sampling, the ball valve is open vertically, allowing the sampling gas to enter the gas analysis chamber directly. When purging is required, a rotary cylinder drives the ball valve core to rotate 90 degrees counterclockwise, creating compressed air that purges towards the flange side. This simultaneously blocks the passage to the gas analysis chamber.

[0046] 3 Gas Cooler

[0047] The sample gas is cooled by a high-efficiency double-layer Peltier cooling plate. The temperature of the cooler is controlled between 0 and 4°C by an independent temperature controller. The condensate is collected by a condensate collector and then discharged periodically by a condensate draining peristaltic pump.

[0048] Analysis System

[0049] The DK-MCJ sends the pretreated sample gas into the gas analysis chamber for infrared analysis. The dedicated NDIR module transmits the measurement data to the PLC via communication. After processing by software such as digital filtering, linear interpolation, and temperature compensation, the gas concentration measurement value is given and output as a 4~20mA current signal.

[0050] Structural Description:

[0051] Fixture 2: Fixture 2 is used to fix and support the circular fixing plate 7.

[0052] Circular fixing plate 7: Circular fixing plate 7 is used to support the riser 3.

[0053] Fixing sleeve 8: Fixing sleeve 8 is used to fix fixing rod 9.

[0054] Fixing hole 11: Fixing hole 11 is used for installing fixing rod 9.

[0055] Through hole 14: Through hole 14 is used for the installation of riser 3.

[0056] Sampling tube 13: Sampling tube 13 is used to collect air inside the coal mill.

[0057] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A CO gas concentration measuring device characterized by comprising: include: Coal mill casing (1); The sampling component is set on the outer shell (1) of the coal mill. The sampling component includes a riser (3) which is fixedly connected to the front surface of the outer shell (1) of the coal mill. Among them, the riser (3) is connected to the interior of the coal mill shell (1), and the front surface of the riser (3) is fixedly connected to the second fixed flange (6), and the front surface of the second fixed flange (6) is provided with four first mounting holes (10). Among them, the four first mounting holes (10) all penetrate the rear surface of the second fixed flange (6), and the front surface of the second fixed flange (6) is provided with the first fixed flange (5).

2. The CO gas concentration measuring device according to claim 1, characterized by: The front surface of the first fixed flange (5) is provided with four second mounting holes (12), all of which penetrate the rear surface of the first fixed flange (5), and bolts are provided on the inner wall of each of the four second mounting holes (12).

3. The CO gas concentration measuring device according to claim 2, characterized by: The rear ends of the four bolts extend out of the inner wall of the corresponding first mounting hole (10), and the first fixed flange (5) and the second fixed flange (6) are fixed together by the four bolts.

4. The CO gas concentration measuring device according to claim 1, characterized by: A probe (4) is fixedly installed on the front surface of the first fixed flange (5), and the rear end of the probe (4) extends through the rear surface of the first fixed flange (5). A sampling tube (13) is fixedly installed on the rear surface of the probe (4).

5. The CO gas concentration measuring device according to claim 4, characterized by: The rear end of the sampling tube (13) extends into the interior of the riser (3), and a filter element is provided on the sampling tube (13).

6. The CO gas concentration measuring device according to claim 1, characterized by: The front surface of the coal mill shell (1) is fixedly connected to two fixing brackets (2), and the opposite sides of the two fixing brackets (2) are fixedly connected to a circular fixing plate (7). The circular fixing plate (7) has a through hole (14) and four fixing holes (11) arranged in a cross shape.

7. The CO gas concentration measuring device according to claim 1, characterized by: The outer wall of the riser (3) is fixedly fitted with a fixing sleeve (8), and the front surface of the fixing sleeve (8) is fixedly connected with four fixing rods (9) arranged in a cross shape.

Images