Coke oven raw gas pipeline liquid level monitoring device based on temperature difference detection

Abstract

The utility model discloses a coke oven raw gas pipeline liquid level monitoring device based on temperature difference detection, and belongs to the technical field of liquid level measuring devices. Comprising a temperature difference detection rod, platinum resistors in the rod, a data processing terminal and a field display large screen, wherein the platinum resistors are uniformly and vertically arranged in the temperature difference detection rod at equal intervals. The temperature difference detection rod is made of a stainless steel metal material; the data processing terminal collects the data information of the platinum resistor, processes the data information and uploads the data information. And the field display large screen is responsible for displaying real-time liquid level data. Aiming at the special working condition requirements that the viscosity of liquid in the coke oven raw gas pipeline is large and explosion-proof is needed, the ammonia water liquid level height of the coke oven raw gas pipeline can be measured in real time by adopting a non-direct contact measurement mode, and the measurement stability and safety are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid level measuring devices, in particular to a coke oven raw gas pipeline liquid level monitoring device based on temperature difference detection. Background Art

[0002] In the process of producing metallurgical coke in modern coke ovens, the raw gas (a general term for unpurified coke oven gas) produced by the thermal decomposition of coal enters the gas collecting pipe through the riser and bridge pipe, is cooled by the sprayed circulating ammonia water and condenses most of the tar, and then is sent to the gas purification workshop through the intake pipe for purification. During the cooling process of the raw gas, a large amount of tar will be deposited in the gas collecting pipe. The tar flows downstream according to the height difference between the gas collecting pipe and the intake pipe and the flow of ammonia water. In the gas collecting pipe and the intake pipe, a state is formed in which the upper part is raw gas, the middle part is ammonia water, and the lower part is tar. In the coking production process, the deposition of tar will cause pipeline blockage, and the deposition of tar cannot be accurately measured and judged. By measuring the liquid level of ammonia water, the deposition of tar in the pipeline can be accurately judged. Currently, commonly used methods for measuring liquid levels include pressure sensors, floats, etc., which cannot be applied due to explosion-proof requirements and tar blockage problems. There is a lack of suitable methods for measuring ammonia levels in pipelines on the market, and it is impossible to regularly check the operation of pipelines, which will inevitably affect the healthy operation of waste gas pipelines. Utility Model Content

[0003] The purpose of the utility model is to propose a coke oven raw gas pipeline level monitoring device based on temperature difference detection. According to the different temperatures of the raw gas layer and the ammonia water layer in the gas collection pipeline and the characteristics that the raw gas layer is in the upper layer and the ammonia water layer is in the lower layer, the device detects the temperature in real time through the platinum resistance probes evenly arranged inside the detection rod body. Finally, according to the temperature difference change between two adjacent platinum resistances, a group of platinum resistance probes with the largest temperature difference is obtained by comparison. The approximate position between the two platinum resistance probes in the group is the boundary point between the raw gas layer and the ammonia water layer, and the height range of the ammonia water layer level can be determined based on this. By adopting this non-direct contact measurement method, the explosion-proof requirements of the coke oven raw gas pipeline are met, the height of the ammonia water level in the coke oven raw gas pipeline can be measured in real time, and the stability and safety of the measurement are improved.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a coke oven raw gas pipeline level monitoring device based on temperature difference detection, comprising a temperature difference detection rod, a mounting flange, a platinum resistance probe, a communication cable, a raw gas layer, an ammonia layer, a tar layer and a data processing terminal, wherein the platinum resistance probe is located inside the temperature difference detection rod, and the platinum resistance probes are evenly arranged vertically inside the temperature difference detection rod at the same interval, the platinum resistance probe is electrically connected to the data processing terminal through the communication cable, the data processing terminal receives real-time data of the platinum resistance probe through the communication cable, a large on-site display screen is provided on one side of the data processing terminal, and the large on-site display screen is electrically connected to the data processing terminal, and the large on-site display screen is used to display real-time data of the liquid level height of the ammonia layer in the pipeline.

[0005] Preferably, the temperature difference detection rod, mounting fixing flange, platinum resistance probe, communication cable, data processing terminal and on-site display large screen are designed to be explosion-proof as a whole.

[0006] Preferably, a mounting fixing flange is provided on the outer wall of the temperature difference detection rod, and the mounting fixing flange is used to fix the temperature difference detection rod on the gas gathering pipeline.

[0007] Preferably, the gas gathering pipeline includes a raw coal gas layer, an ammonia water layer and a tar layer.

[0008] Preferably, the temperature difference detection rod is made of stainless steel.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0010] 1. The utility model is a coke oven raw gas pipeline level monitoring device based on temperature difference detection. The liquid level monitoring device is ingeniously designed and can determine the liquid level height range according to the difference characteristics of the liquid gas temperature in different pipelines. It can more accurately measure the height of the ammonia water level when the raw gas layer, tar layer and ammonia water layer in the pipeline are complexly layered.

[0011] 2. The utility model provides a coke oven raw gas pipeline level monitoring device based on temperature difference detection. The measurement method of the level monitoring device has good explosion-proof performance, is not affected by different liquid conditions in the on-site pipeline, does not have tar adhesion and blockage, has good corrosion resistance of parts, and has high real-time online detection. At the same time, it does not affect the internal environment of the pipeline, has high safety, and is suitable for long-term on-site measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a front perspective view of the measuring part of the device of the utility model;

[0013] Figure 2 It is a schematic diagram of the overall structure of the utility model.

[0014] In the figure: 1. Temperature difference detection rod; 2. Installation and fixing flange; 3. Platinum resistance probe; 4. Communication cable; 5. Raw coal gas layer; 6. Ammonia layer; 7. Tar layer; 8. Data processing terminal; 9. On-site display large screen. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] See also Figure 1-2 The present embodiment provides the following technical solutions: a coke oven raw gas pipeline level monitoring device based on temperature difference detection, comprising a temperature difference detection rod 1, a mounting flange 2, a platinum resistance probe 3, a communication cable 4, a raw gas layer 5, an ammonia layer 6, a tar layer 7 and a data processing terminal 8, wherein the platinum resistance probe 3 is located inside the temperature difference detection rod 1, wherein the platinum resistance probe 3 is evenly arranged vertically inside the temperature difference detection rod 1 at the same spacing, the platinum resistance probe 3 is electrically connected to the data processing terminal 8 through the communication cable 4 to transmit the data signal, the data processing terminal 8 receives the real-time data of the platinum resistance probe 3 through the communication cable 4, and calculates and compares the collected temperature data information of the platinum resistance, a field display large screen 9 is provided on one side of the data processing terminal 8, and the field display large screen 9 is electrically connected to the data processing terminal 8, and the field display large screen 9 is used to display the real-time data of the liquid level height of the ammonia layer 6 in the pipeline.

[0017] In practical applications, the utility model measures the data of the internal temperature at different heights by vertically inserting the temperature difference detection rod 1 into the pipeline. The field data processing terminal 8 collects the platinum resistance data in real time, calculates the platinum resistance temperature difference data in adjacent rods, and compares and obtains a group of platinum resistance probes 3 with the largest temperature difference according to the different temperature characteristics of the raw coal gas layer 5 and the ammonia water layer 6 in the gas collection pipeline (the temperature difference between the two is about 10 degrees under general working conditions), and determines the height range of the boundary point of the raw coal gas layer 5 and the ammonia water layer 6 in the pipeline, thereby obtaining the liquid level height of the ammonia water layer 6. Finally, the field data processing terminal 8 uploads the obtained liquid level height data of the ammonia water layer 6 to the field display large screen 9 by wired and wireless means respectively.

[0018] The data processing terminal 8 determines the liquid level height of the ammonia water layer 6 in the pipeline in the following manner:

[0019] The adjacent platinum resistance data are subtracted and compared to find the group with the largest difference. It is found that the boundary point between the raw coal gas layer 5 and the ammonia water layer 6 is roughly in the middle of the positions of the two probes in this group. The height data of the two probes in the rod body are compared to find the liquid level height of the ammonia water layer 6.

[0020] At the same time, the arrangement spacing of the platinum resistors in the temperature difference detection rod 1 can be adjusted accordingly according to the requirements of measurement accuracy. The smaller the arrangement spacing, the more temperature difference changes in a smaller height range can be detected, and the higher the measurement accuracy.

[0021] In this embodiment, the temperature difference detection rod 1, the mounting fixing flange 2, the platinum resistance probe 3, the communication cable 4, the data processing terminal 8 and the on-site display screen 9 are designed to be explosion-proof as a whole, so that the entire device is safe and reliable; the temperature difference detection rod 1 is made of stainless steel metal, so that the temperature difference detection rod 1 has excellent corrosion resistance.

[0022] An installation fixing flange 2 is provided on the outer wall of the temperature difference detection rod 1, and the installation fixing flange 2 is used to fix the temperature difference detection rod 1 on the gas gathering pipeline; the gas gathering pipeline includes a raw coal gas layer 5, an ammonia water layer 6 and a tar layer 7, the raw coal gas layer 5 is in the upper layer, and the ammonia water layer 6 is in the lower layer.

[0023] Working principle: When in use, the temperature difference detection rod 1 is installed and fixed on the gas collection pipeline by installing the fixing flange 2. The data processing terminal 8 receives the real-time data of the platinum resistance probe 3 through the communication cable 4. The data processing terminal 8 obtains the liquid level height of the ammonia water layer 6 by comparing the platinum resistance temperature data. The data processing terminal 8 uploads the liquid level height data of the ammonia water layer 6 to the on-site display screen 9. The on-site display screen 9 displays the real-time data of the liquid level height of the ammonia water layer 6 in the pipeline.

[0024] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coke oven raw gas pipeline liquid level monitoring device based on temperature difference detection, characterized in that: The invention comprises a temperature difference detection rod (1), a mounting flange (2), a platinum resistance probe (3), a communication cable (4), a raw coal gas layer (5), an ammonia water layer (6), a tar layer (7) and a data processing terminal (8), wherein the platinum resistance probe (3) is located inside the temperature difference detection rod (1), and the platinum resistance probes (3) are evenly arranged vertically inside the temperature difference detection rod (1) at the same spacing, the platinum resistance probe (3) is electrically connected to the data processing terminal (8) through the communication cable (4), the data processing terminal (8) receives real-time data of the platinum resistance probe (3) through the communication cable (4), a large on-site display screen (9) is arranged on one side of the data processing terminal (8), and the large on-site display screen (9) is electrically connected to the data processing terminal (8), and the large on-site display screen (9) is used to display real-time data of the liquid level height of the ammonia water layer in the pipeline.

2. The coke oven raw gas pipeline liquid level monitoring device based on temperature difference detection according to claim 1 is characterized by: The temperature difference detection rod (1), the mounting fixing flange (2), the platinum resistance probe (3), the communication cable (4), the data processing terminal (8) and the large on-site display screen (9) are overall designed to be explosion-proof.

3. The coke oven raw gas pipeline liquid level monitoring device based on temperature difference detection according to claim 1 is characterized in that: A mounting fixing flange (2) is provided on the outer wall of the temperature difference detection rod (1), and the mounting fixing flange (2) is used to fix the temperature difference detection rod (1) on the gas collection pipeline.

4. The coke oven raw gas pipeline liquid level monitoring device based on temperature difference detection according to claim 3 is characterized by: The gas gathering pipeline includes a raw coal gas layer (5), an ammonia water layer (6) and a tar layer (7) inside.

5. The coke oven raw gas pipeline liquid level monitoring device based on temperature difference detection according to claim 1 is characterized by: The temperature difference detection rod (1) is made of stainless steel.

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