Gas path pipe assembly of on-line oxygen analyzer

Abstract

The utility model relates to the technical field of oxygen content detection, in particular to a gas circuit pipe assembly of an online oxygen analyzer, which comprises a detector, a zirconium oxide sensor is integrated at the front end of the detector, a flow guide pipe is sleeved on the outer side of the zirconium oxide sensor, the tail end of the flow guide pipe is fixedly connected with the detector, and the gas circuit pipe assembly is connected with the detector. An extension pipe is slidably connected to the outer side of the flow guide pipe, a movable block is fixedly connected to the interior of the tail end of the extension pipe, a screw shaft is connected to the center of the movable block in a threaded mode, and the two sides of the screw shaft are rotationally connected to the flow guide pipe. The utility model aims to provide the gas path pipe assembly of the online oxygen analyzer, so as to solve the problems that when the existing zirconium oxide online oxygen analyzer is used, an external data acquisition gas path pipe assembly is mostly designed to be installed in a fixed size, the position is fixed when the oxygen content in flue gas is acquired, and the cost is low. And the analysis precision is influenced by errors in analysis of the oxygen content of the flue gas due to the influence of the airflow at the mounting position.

Description

Technical Field

[0001] The utility model relates to the technical field of oxygen content detection, in particular to a gas pipeline assembly of an on-line oxygen analyzer. Background Technique

[0002] High-oxygen analyzers are widely used for the detection of high oxygen content, such as the oxygen content after mixing high oxygen in the blast furnace blower, or for boiler kilns and other scenarios that need to be detected. Among various oxygen analyzers, zirconia oxygen analyzers are the most commonly used.

[0003] When the existing zirconia on-line oxygen analyzer is in use, the external data acquisition gas pipeline assembly is mostly designed for fixed-size installation. Its position is fixed when collecting the oxygen content in the flue gas, and the analysis of the oxygen content in the flue gas will be affected by the airflow at the installation position, resulting in errors and affecting the analysis accuracy. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a gas pipeline assembly of an on-line oxygen analyzer, so as to solve the problem that when the existing zirconia on-line oxygen analyzer is in use, the external data acquisition gas pipeline assembly is mostly designed for fixed-size installation. Its position is fixed when collecting the oxygen content in the flue gas, and the analysis of the oxygen content in the flue gas will be affected by the airflow at the installation position, resulting in errors and affecting the analysis accuracy.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A gas pipeline assembly of an on-line oxygen analyzer includes a detector. An oxygen zirconia sensor is integrated at the front end of the detector. A guide pipe is sleeved outside the oxygen zirconia sensor. The tail end of the guide pipe is fixedly connected to the detector. An extension pipe is slidably connected to the outside of the guide pipe. An activity block is fixedly connected to the inside of the tail end of the extension pipe. A wire shaft is threadedly connected to the center of the activity block. Both sides of the wire shaft are rotatably connected to the guide pipe, and the inner end is fixedly connected to the output shaft of a motor. The motor is fixedly connected to the detector. A standard gas inlet is integrated at the tail side of the detector. A partition is snap-connected to the front side inside the guide pipe. A blower is fixedly connected to the tail end of the partition. A filter screen is snap-connected to the front end of the extension pipe.

[0007] Preferably, a connection cable is externally connected to the detector.

[0008] Preferably, an installation flange is integrated at the tail end of the guide pipe.

[0009] Preferably, guide rods are embedded and fixedly connected to both sides outside the guide pipe. Sliders are slidably connected to the surfaces of the guide rods. The sliders are integrally fixed to the inside of the tail end of the extension pipe. The sliders and the activity block are distributed in a T shape.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0011] In the present utility model, by sleeving a guide tube with a wire shaft driven by a motor to rotate, the wire shaft drives a movable block to move, and then drives an extension tube to expand and contract. After the analyzer is fixedly installed, by changing the extension length of the extension tube and cooperating with a blower to conduct gas drainage inside the guide tube, on-line oxygen content analysis of flue gas at different positions in the furnace cavity can be achieved, and multi-data comparison is used to improve data accuracy and reduce measurement errors, providing an on-line oxygen content analysis guarantee with high precision for the full combustion of the coal furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is the front axial view of the gas path tube assembly of an on-line oxygen analyzer of the present utility model;

[0013] Figure 2 is the rear axial view of the gas path tube assembly of an on-line oxygen analyzer of the present utility model;

[0014] Figure 3 is the extended tube extended state diagram of the gas path tube assembly of an on-line oxygen analyzer of the present utility model;

[0015] Figure 4 is Figure 3 the enlarged schematic diagram of the structure of area A in

[0016] Figure 5 is the internal sectional structure schematic diagram of the guide tube of the gas path tube assembly of an on-line oxygen analyzer of the present utility model.

[0017] In the figure: 1, detector; 2, zirconia sensor; 3, guide tube; 4, extension tube; 5, movable block; 6, wire shaft; 7, motor; 8, standard gas inlet; 9, partition board; 10, blower; 11, filter screen; 12, connecting cable; 13, mounting flange; 14, guide rod; 15, slider. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0019] Please refer to Figures 1-5 , the present utility model provides a technical solution:

[0020] An air duct tube assembly of an online oxygen analyzer includes a detector 1, which is used for converting and outputting the electrical signal of the measurement data of the zirconia sensor to achieve the purpose of online detection; a zirconia sensor 2 is integrated at the front end of the detector 1 for analyzing and detecting the oxygen content data; a diversion tube 3 is sleeved outside the zirconia sensor 2, and the tail end of the diversion tube 3 is fixedly connected to the detector 1 for introducing and discharging the flue gas in the furnace cavity to meet the design of the gas path circulation for the zirconia sensor detection; an extension tube 4 is slidably connected to the outside of the diversion tube 3, and a movable block 5 is fixedly connected inside the tail end of the extension tube 4. A lead screw 6 is threadedly connected to the center of the movable block 5. Both sides of the lead screw 6 are rotatably connected to the diversion tube 3, and the inner end is fixedly connected to the output shaft of a motor 7. The motor 7 is fixedly connected to the detector 1, which is beneficial for the motor to drive the lead screw to rotate, the lead screw 6 to drive the movable block to move, and the movable block to drive the extension tube to expand and contract relative to the diversion tube, so as to meet the multi-data collection and analysis of the flue gas at different positions after the analyzer is fixed in the furnace, reduce the influence of the flue gas flow, and ensure the accuracy of the online oxygen content analysis measurement data; a calibration gas inlet 8 is integrated at the tail side of the detector 1, which is convenient for the atmosphere to enter as a reference standard for the oxygen content on one side of the zirconia tube inside the zirconia sensor; a partition 9 is snap-connected to the front side inside the diversion tube 3, and a blower 10 is fixedly connected to the tail end of the partition 9. The partition is used to separate the inner cavity of the diversion plate to cooperate with the blower for air diversion to realize the construction of a good oxygen content measurement flue gas circulation loop inside the diversion tube; a filter screen 11 is snap-connected to the front end of the extension tube 4 for filtering the dust in the intake air of the extension tube to prevent the problem that dust enters and accumulates on the surface of the zirconia sensor for a long time, affecting gas contact and causing a decrease in measurement accuracy.

[0021] In this embodiment, please refer to Figure 2 , a connection cable 12 is externally connected to the detector 1 for electrically connecting with the external analyzer body to achieve real-time online display of the oxygen content in the furnace.

[0022] In this embodiment, please refer to Figure 1 , a mounting flange 13 is integrated at the tail end of the diversion tube 3 for fixing the analyzer by inserting it into the furnace wall.

[0023] In this embodiment, please refer to Figure 4 , guide rods 14 are embedded and fixedly connected to both sides outside the diversion tube 3. A slider 15 is slidably connected to the surface of the guide rod 14. The slider 15 is integrally fixed inside the tail end of the extension tube 4. The slider 15 and the movable block 5 are distributed in a T shape, which is beneficial for the slider to cooperate with the guide rod to strengthen the movement guidance of the extension tube and ensure the smoothness of the structural movement.

[0024] Working principle of the utility model: During use, insert the gas pipeline assembly of the analyzer into the reserved installation hole in the furnace, and then use the installation flange 13 and bolts for installation and fixation. Then connect the cable 12 on the analyzer gas pipeline detector 1 to the analyzer body. During detection, the motor 7 can be used to drive the wire shaft 6 to rotate. The wire shaft 6 drives the movable block 5 to move forward, and the movable block 5 drives the extension pipe 4 to extend forward along the guide rod 14, so as to adjust the position of the air inlet at the front end of the extension pipe, and cooperate with the blower 10 in the diversion pipe 3 to collect the flue gas at different positions in the furnace. Furthermore, the potential change caused by the concentration difference between the atmospheric oxygen content inside the zirconium tube and the oxygen content in the flue gas outside the zirconium tube in the zirconia sensor 2 can be utilized to detect the oxygen content in the flue gas, and the data is transmitted to the analyzer body through the cable 12 for on-line real-time analysis, detection and display of the oxygen content in the flue gas.

[0025] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0026] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An air duct tube assembly of an on-line oxygen analyzer, comprising a detector (1), characterized in that: The front end of the detector (1) is integrated with a zirconia sensor (2). A flow guide pipe (3) is sleeved outside the zirconia sensor (2). The tail end of the flow guide pipe (3) is fixedly connected to the detector (1). An extension pipe (4) is slidably connected to the outside of the flow guide pipe (3). An activity block (5) is fixedly connected to the inside of the tail end of the extension pipe (4). A wire shaft (6) is threadedly connected to the center of the activity block (5). Both sides of the wire shaft (6) are rotatably connected to the flow guide pipe (3), and the inner end is fixedly connected to the output shaft of a motor (7). The motor (7) is fixedly connected to the detector (1). A calibration gas inlet (8) is integrated on the tail side of the detector (1). A partition plate (9) is snap-connected to the front side inside the flow guide pipe (3). A blower (10) is fixedly connected to the tail end of the partition plate (9). A filter screen (11) is snap-connected to the front end of the extension pipe (4).

2. The gas path tube assembly of an on-line oxygen analyzer according to claim 1, characterized in that: A connection cable (12) is externally connected to the detector (1).

3. The gas path tube assembly of an on-line oxygen analyzer according to claim 1, characterized in that: An installation flange (13) is integrated at the tail end of the flow guide pipe (3).

4. The gas path tube assembly of an on-line oxygen analyzer according to claim 1, characterized in that: Guide rods (14) are embedded and fixedly connected to both sides of the outside of the flow guide pipe (3). Sliders (15) are slidably connected to the surfaces of the guide rods (14). The sliders (15) are integrally fixed to the inside of the tail end of the extension pipe (4). The sliders (15) and the activity block (5) are distributed in a T shape.

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