Operation detection system of converter pipeline and control method thereof

Abstract

The invention discloses an operation detection system of a converter pipeline and a control method of the operation detection system, and the system is applied to a converter. The operation detection subsystem comprises a pore plate which is arranged on the converter pipeline; one end of the sampling water pipeline is connected with the pressure tapping hole of the pore plate; the operation detection instrument is connected with the other end of the sampling water pipeline; the temperature sensor is arranged in an area near the sampling water pipeline; the heater is arranged in an area near the sampling water pipeline; the controller is used for acquiring the detection temperature of the temperature sensor; and controlling the heater based on the detection temperature, so that the pipeline temperature of the sampling water pipeline is greater than a preset first temperature threshold value. According to the invention, the technical problem of low detection accuracy of the operation detection instrument is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of converters, and in particular relates to an operation detection system for a converter pipeline and a control method thereof. Background Art

[0002] During the converter production process, the operating status of the converter pipeline needs to be monitored using operating detection instruments. Without accurate detection data from the operating detection instruments, timely control and intervention cannot be carried out, which can lead to production accidents. For example, the converter pipeline is a vaporization pipeline. During the smelting process of the steel plant converter system, high-temperature flue gas is generated. The high-temperature flue gas is cooled through the vaporization pipeline. During this process, the vaporization system needs to be continuously replenished with water. If the water flow and pressure detection of the operating detection instrument are inaccurate, timely control and intervention cannot be carried out. When the water flow and pressure in the vaporization pipeline do not meet actual usage conditions, the vaporization pipeline will burst due to a sudden temperature rise.

[0003] Therefore, it is particularly important to detect the water flow and pressure of the vaporization pipeline. At present, differential pressure transmitters and pressure transmitters are usually used as operation detection instruments to detect the water flow and pressure of the vaporization pipeline. Since the diameter of the sampling water pipeline of the differential pressure transmitter and the pressure transmitter is small, the sampling water in the sampling water pipeline is prone to freezing, which will lead to low detection accuracy of the operation detection instrument. Summary of the Invention

[0004] The embodiment of the present invention provides an operation detection system for a converter pipeline and a control method thereof, which solves the technical problem of low detection accuracy of an operation detection instrument.

[0005] In the first aspect, an embodiment of the present invention provides an operation detection system for a converter pipeline, which is applied to a converter, and the operation detection system includes: an operation detection subsystem; the operation detection subsystem includes: an orifice plate, which is arranged on the converter pipeline; a sampling water pipeline, one end of which is connected to the pressure taking hole of the orifice plate; an operation detection instrument, which is connected to the other end of the sampling water pipeline; a temperature sensor, which is arranged in the vicinity of the sampling water pipeline; a heater, which is arranged in the vicinity of the sampling water pipeline; a controller, which is used to: obtain the detection temperature of the temperature sensor; and control the heater based on the detection temperature so that the pipeline temperature of the sampling water pipeline is greater than a preset first temperature threshold.

[0006] In combination with the first aspect of the present invention, in some embodiments, the operation detection subsystem further includes: a box body, which is arranged outside the converter pipe, and the operation detection instrument and the temperature sensor are both arranged inside the box body.

[0007] In combination with the first aspect of the present invention, in some embodiments, the main part of the sampling water pipe is arranged inside the box; the heater is a radiant heater and is arranged on the side wall of the box, and the heater faces the sampling water pipe.

[0008] In combination with the first aspect of the present invention, in some embodiments, the heater is an electric heating tape, and the electric heating tape is wound around the sampling water pipeline.

[0009] In combination with the first aspect of the present invention, in some embodiments, the controller is electrically connected to the temperature sensor and the heater; or the controller is wirelessly connected to the temperature sensor and the heater.

[0010] In combination with the first aspect of the present invention, in some embodiments, the operation detection instrument includes a differential pressure transmitter and a pressure transmitter.

[0011] In combination with the first aspect of the present invention, in some embodiments, the operation detection system includes multiple operation detection subsystems, the converter pipe includes multiple sub-pipes of the converter's vaporization pipe, and the multiple sub-pipes of the converter's vaporization pipe include a cover skirt pipe, a fixed flue sub-pipe, a transverse flue sub-pipe, a main flue sub-pipe and a curved flue sub-pipe connected in sequence, and each of the sub-pipes is provided with an operation detection subsystem.

[0012] In combination with the first aspect of the present invention, in some embodiments, the operation detection system includes a plurality of the operation detection subsystems, the converter pipeline includes the vaporization pipeline of the converter, the outlet flue gas pipeline of the electrostatic precipitator of the converter and the cooling water pipeline of the coal cooling tower of the converter, and one operation detection subsystem is provided on the vaporization pipeline, the outlet flue gas pipeline and the cooling water pipeline.

[0013] In a second aspect, an embodiment of the present invention provides a method for controlling an operation detection system of a converter pipeline, which is applied to an operation detection system of a converter pipeline as described in any one of the first aspects, and the method includes: obtaining the detection temperature of the temperature sensor; controlling the heater based on the detection temperature so that the pipeline temperature of the sampling water pipeline is greater than a preset first temperature threshold.

[0014] In combination with the second aspect of the present invention, in some embodiments, controlling the heater based on the detected temperature includes: if the detected temperature is less than or equal to the first temperature threshold, controlling the heater to power on; if the detected temperature is greater than a preset second temperature threshold, controlling the heater to power off, and the second temperature threshold is greater than the first temperature threshold.

[0015] The one or more technical solutions provided by the embodiments of the present invention achieve at least the following technical effects or advantages:

[0016] The converter pipeline operation detection system provided in an embodiment of the present invention is applied to a converter. The operation detection system includes: an operation detection subsystem; the operation detection subsystem includes: an orifice plate disposed on the converter pipeline; a sampling water pipeline, one end of which is connected to the pressure sampling hole of the orifice plate; an operation detection instrument connected to the other end of the sampling water pipeline; a temperature sensor disposed in an area near the sampling water pipeline; a heater disposed in an area near the sampling water pipeline; and a controller for: obtaining a detection temperature of the temperature sensor; and controlling the heater based on the detection temperature so that the pipeline temperature of the sampling water pipeline is greater than a preset first temperature threshold. Based on the detection temperature of the temperature sensor, it can be determined whether the pipeline temperature of the sampling water pipeline is too low. That is, the risk of freezing of the sampled water in the sampling water pipeline can be determined by the detection temperature. If the risk of freezing is high, the heater is controlled to heat the sampling water pipeline to prevent the sampled water in the sampling water pipeline from freezing. Therefore, the detection accuracy of the operation detection instrument is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a first schematic diagram of the operation detection subsystem in an embodiment of the present invention;

[0019] Figure 2 This is a second schematic diagram of the operation detection subsystem in an embodiment of the present invention;

[0020] Figure 3 This is a third schematic diagram of the operation detection subsystem in an embodiment of the present invention. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0022] In the present invention, descriptions such as "first" and "second" are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions of various embodiments may be combined with each other, but this must be based on the fact that they can be implemented by a person of ordinary skill in the art. If the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0023] Figure 1 This is a first schematic diagram of the operation detection subsystem in an embodiment of the present invention. Figure 1 As shown, an operation detection system for a converter pipeline provided by an embodiment of the present invention is applied to a converter, and the operation detection system includes: an operation detection subsystem; the operation detection subsystem includes: an orifice plate 10, which is arranged on the converter pipeline 70; a sampling water pipeline 20, one end of the sampling water pipeline 20 is connected to the pressure taking hole of the orifice plate 10; an operation detection instrument 30, which is connected to the other end of the sampling water pipeline 20; a temperature sensor 40, which is arranged in the vicinity of the sampling water pipeline 20; a heater 50, which is arranged in the vicinity of the sampling water pipeline 20; a controller, which is used to: obtain the detection temperature of the temperature sensor 40; and control the heater 50 based on the detection temperature so that the pipeline temperature of the sampling water pipeline 20 is greater than a preset first temperature threshold.

[0024] It should be noted that the temperature sensor 40 being disposed in the vicinity of the sampling water pipe 20 may mean that the temperature sensor 40 is in close proximity to the sampling water pipe 20. For example, the temperature sensor 40 is disposed on the sampling water pipe 20, in which case the temperature detected by the temperature sensor 40 is the pipe temperature of the sampling water pipe 20. The temperature sensor 40 being disposed in the vicinity of the sampling water pipe 20 may also mean that the temperature sensor 40 is at a certain distance from the sampling water pipe 20, in which case the temperature detected by the temperature sensor 40 is the ambient temperature of the sampling water pipe 20. Furthermore, the heater 50 being disposed in the vicinity of the sampling water pipe 20 may mean that the heater 50 is in close proximity to the sampling water pipe 20, or it may mean that the heater 50 is at a certain distance from the sampling water pipe 20.

[0025] In some embodiments, the inner diameter of the sampling water pipe 20 is 5-10 mm. In this case, since the inner diameter of the pipe is very small, it is easier for the sampling water to freeze, so the embodiment of the present invention is particularly suitable for the inner diameter of the pipe.

[0026] refer to Figure 2 As shown, Figure 2This is a second schematic diagram of the operation detection subsystem in an embodiment of the present invention. The operation detection subsystem may further include: a box 60 arranged outside the converter pipe 70, and the operation detection instrument 30 and the temperature sensor 40 are both arranged inside the box 60.

[0027] refer to Figure 3 As shown, Figure 3 This is a third schematic diagram of the operation detection subsystem in an embodiment of the present invention. The main part of the sampling water pipeline 20 is arranged inside the box 60; the heater 50 is a radiant heater 510 and is arranged on the side wall of the box 60, and the heater 50 faces the sampling water pipeline 20.

[0028] It should be noted that Figure 3 A box body 60 is provided, and the main part of the sampling water pipe 20 is provided inside the box body 60. At this time, the radiant heater 510 can heat the sampling water pipe 20 more conveniently. In other embodiments, when the box body 60 is not provided, the radiant heater 510 can also be used to heat the sampling water pipe 20.

[0029] It should be noted that if the heater 50 is a radiant heater 510, and the housing 60 is not provided, the heating area of ​​the radiant heater 510 increases, resulting in increased energy loss. Therefore, in the embodiment of the present invention, the housing 60 is provided, and the heating area of ​​the radiant heater 510 is located inside the housing 60, thereby reducing the heat radiation area and lowering energy loss. Furthermore, since the main portion of the sampling water pipe 20 is disposed inside the housing 60, the sampling water pipe 20 can be effectively heated, avoiding the slow heating caused by the main portion of the sampling water pipe 20 being disposed outside the housing 60. Therefore, both reducing energy loss and increasing the heating rate of the sampling water pipe 20 are achieved.

[0030] refer to Figure 1 or Figure 2 As shown, the heater 50 is an electric heating tape 520 , which is wound around the sampling water pipe 20 .

[0031] It should be noted that when the heater 50 is an electric heating tape 520, the electric heating tape 520 is close to the sampling water pipe 20, and the heat of the electric heating tape 520 can directly act on the sampling water pipe 20, thereby improving the heating efficiency of the sampling water pipe 20. At the same time, it avoids excessive energy consumption and loss, thereby improving energy utilization.

[0032] In some embodiments, the controller is electrically connected to the temperature sensor 40 and the heater 50 ; or the controller is wirelessly connected to the temperature sensor 40 and the heater 50 .

[0033] In some embodiments, the operation detection instrument 30 includes a differential pressure transmitter and a pressure transmitter.

[0034] It should be noted that the operation detection instrument 30 can be a vaporization instrument, such as a differential pressure transmitter and a pressure transmitter. The differential pressure transmitter can detect the water flow rate in the converter pipeline 70 based on the sampled water in the sampled water pipeline 20, and the pressure transmitter can detect the pressure in the converter pipeline 70 based on the sampled water in the sampled water pipeline 20. In addition, the differential pressure transmitter corresponds to two sampled water pipelines 20, and the pressure transmitter corresponds to one sampled water pipeline 20.

[0035] In some embodiments, the operation detection system includes multiple operation detection subsystems, the converter pipe 70 includes multiple sub-pipes of the converter's vaporization pipe, and the multiple sub-pipes of the converter's vaporization pipe include a cover skirt pipe, a fixed flue sub-pipe, a transverse flue sub-pipe, a main flue sub-pipe and a curved flue sub-pipe connected in sequence, and each sub-pipe is provided with an operation detection subsystem.

[0036] It should be noted that it is also possible to install only one operation detection subsystem on the vaporization pipeline, but this presents some problems. Specifically, as the high-temperature flue gas flows through the vaporization pipeline, its temperature gradually decreases. Consequently, there are temperature differences between different locations on the vaporization pipeline. Therefore, in the high-temperature section of the vaporization pipeline, the ambient temperature is higher, and the sampled water in the sampling water pipeline 20 there is less likely to freeze, so the operation detection instrument 30 is less likely to make detection errors. In the low-temperature section of the vaporization pipeline, the ambient temperature is lower, and the sampled water in the sampling water pipeline 20 there is more likely to freeze, so the operation detection instrument 30 is more likely to make detection errors. As can be seen from the above, different locations on the vaporization pipeline cannot be generalized. Therefore, the embodiment of the present invention limits the installation of operation detection subsystems in different sub-pipelines to ensure the normal operation of the operation detection instruments 30 in different sub-pipelines, improve the detection accuracy of the operation detection instruments 30 at different locations, facilitate timely intervention and control based on the detection data of the operation detection instruments 30, and improve the operational reliability of the vaporization pipeline.

[0037] It should be noted that, when the operation detection system includes multiple operation detection subsystems, the controllers of each operation detection subsystem may be the same or independent and different.

[0038] In other embodiments, the operation detection system includes multiple operation detection subsystems, and the converter pipeline 70 includes the vaporization pipeline of the converter, the outlet flue gas pipeline of the electrostatic precipitator of the converter, and the cooling water pipeline of the coal cooling tower of the converter. An operation detection subsystem is provided on the vaporization pipeline, the outlet flue gas pipeline and the cooling water pipeline.

[0039] It should be noted that an operation detection subsystem may be provided on each of the multiple sub-pipes of the vaporization pipe, the outlet flue gas pipe and the cooling water pipe.

[0040] It should be noted that the operation detection instrument 30 has a great impact on the converter system. It is difficult to detect problems in time if only personnel power on and conduct regular inspections. There is a lack of effective response measures in the face of extremely cold weather at night in winter. Therefore, the embodiment of the present invention also realizes automated management to reduce manual labor.

[0041] It should be noted that, when the controller is wirelessly connected to the temperature sensor 40 and the heater 50, the temperature sensor 40 may include a temperature sensor 40 body, a microcontroller, and a wireless communication module, wherein the temperature sensor 40 body is used to obtain an analog signal, the microcontroller is used to convert the analog signal into a temperature value, and the wireless communication module is used to send the temperature value to the controller. In addition, the controller may include a controller body and a host computer, and the host computer may be used to display the detected temperature on an HMI screen, and to issue a screen alarm when the detected temperature is abnormal. The smartphone can also monitor the instrument temperature wirelessly. In addition, in the process of controlling the heater 50, the heater 50 can be powered on and off by controlling the relay.

[0042] An operation detection system for a converter pipe provided in an embodiment of the present invention is applied to a converter. The operation detection system comprises an operation detection subsystem, including an orifice plate 10 disposed on a converter pipe 70; a sampling water pipe 20, one end of which is connected to a pressure sampling hole of the orifice plate 10; an operation detection instrument 30 connected to the other end of the sampling water pipe 20; a temperature sensor 40 disposed in a vicinity of the sampling water pipe 20; a heater 50 disposed in a vicinity of the sampling water pipe 20; and a controller configured to: obtain a temperature detected by the temperature sensor 40; and control the heater 50 based on the detected temperature to ensure that the pipe temperature of the sampling water pipe 20 is greater than a preset first temperature threshold. The temperature detected by the temperature sensor 40 can be used to determine whether the pipe temperature of the sampling water pipe 20 is too low. That is, the risk of freezing of the sampled water in the sampling water pipe 20 can be determined based on the detected temperature. If the freezing risk is high, the heater 50 is controlled to heat the sampling water pipe 20 to prevent the sampled water in the sampling water pipe 20 from freezing. Therefore, the detection accuracy of the operation detection meter 30 is improved.

[0043] Based on the same inventive concept, an embodiment of the present invention provides a method for controlling an operation detection system of a converter pipeline, which is applied to the operation detection system of a converter pipeline. The method includes: obtaining the detection temperature of a temperature sensor 40; controlling a heater 50 based on the detection temperature so that the pipeline temperature of a sampling water pipeline 20 is greater than a preset first temperature threshold.

[0044] It should be noted that the temperature sensor 40 being disposed in the vicinity of the sampling water pipe 20 may mean that the temperature sensor 40 is in close proximity to the sampling water pipe 20. For example, the temperature sensor 40 is disposed on the sampling water pipe 20, in which case the temperature detected by the temperature sensor 40 is the pipe temperature of the sampling water pipe 20. The temperature sensor 40 being disposed in the vicinity of the sampling water pipe 20 may also mean that the temperature sensor 40 is at a certain distance from the sampling water pipe 20, in which case the temperature detected by the temperature sensor 40 is the ambient temperature of the sampling water pipe 20. Furthermore, the heater 50 being disposed in the vicinity of the sampling water pipe 20 may mean that the heater 50 is in close proximity to the sampling water pipe 20, or it may mean that the heater 50 is at a certain distance from the sampling water pipe 20.

[0045] In some embodiments, controlling the heater 50 based on the detected temperature may include: if the detected temperature is less than or equal to a first temperature threshold, controlling the heater 50 to power on; if the detected temperature is greater than a preset second temperature threshold, controlling the heater 50 to power off, and the second temperature threshold is greater than the first temperature threshold.

[0046] It should be noted that the second temperature threshold can also be equal to the first temperature threshold. However, in this case, the heater 50 will be repeatedly powered on and off, increasing the risk of damage to the heater 50. Therefore, in this embodiment of the present invention, the second temperature threshold is set to be greater than the first temperature threshold to prevent damage to the heater 50, thereby ensuring the detection accuracy of the operation detection instrument 30 and, in turn, the reliability of the operation detection subsystem.

[0047] It should be understood that more implementation details of the converter pipeline operation detection system control method in the embodiment of the present invention can be found in the aforementioned converter pipeline operation detection system, and will not be repeated here for the sake of brevity.

[0048] The foregoing description is merely an embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be included within the scope of the claims.

Claims

1. A converter pipeline operation detection system, characterized in that: Applied to a converter, the operation detection system includes: an operation detection subsystem; the operation detection subsystem includes: Orifice plate, provided on the converter pipe; A sampling water pipeline, one end of which is connected to the pressure-taking hole of the orifice plate; A running detection instrument is connected to the other end of the sampling water pipeline; a temperature sensor, disposed in a vicinity of the sampling water pipeline; a heater, disposed in a vicinity of the sampling water pipeline; The controller is used to: obtain the detection temperature of the temperature sensor; and control the heater based on the detection temperature so that the pipe temperature of the sampling water pipe is greater than a preset first temperature threshold.

2. The converter pipeline operation detection system according to claim 1, characterized in that: The operation detection subsystem further includes: The box body is arranged outside the converter pipe, and the operation detection instrument and the temperature sensor are both arranged inside the box body.

3. The converter pipeline operation detection system according to claim 2, characterized in that: The main body of the sampling water pipeline is arranged inside the box; The heater is a radiation heater and is arranged on the side wall of the box body. The heater faces the sampling water pipeline.

4. The converter pipeline operation detection system according to claim 1, characterized in that: The heater is an electric heating tape, and the electric heating tape is wound on the sampling water pipeline.

5. The converter pipeline operation detection system according to claim 1, characterized in that: The controller is electrically connected to the temperature sensor and the heater; or The controller is wirelessly connected to the temperature sensor and the heater.

6. The converter pipeline operation detection system according to claim 1, characterized in that: The operation detection instrument includes a differential pressure transmitter and a pressure transmitter.

7. The converter pipeline operation detection system according to any one of claims 1 to 6, characterized in that: The operation detection system includes multiple operation detection subsystems, the converter pipe includes multiple sub-pipes of the converter's vaporization pipe, the multiple sub-pipes of the converter's vaporization pipe include a cover skirt pipe, a fixed flue sub-pipe, a transverse flue sub-pipe, a main flue sub-pipe and a curved flue sub-pipe connected in sequence, and each of the sub-pipes is provided with an operation detection subsystem.

8. The converter pipeline operation detection system according to any one of claims 1 to 6, characterized in that: The operation detection system includes multiple operation detection subsystems. The converter pipeline includes the vaporization pipeline of the converter, the outlet flue gas pipeline of the electrostatic precipitator of the converter and the cooling water pipeline of the coal cooling tower of the converter. One operation detection subsystem is provided on each of the vaporization pipeline, the outlet flue gas pipeline and the cooling water pipeline.

9. A method for controlling a converter pipeline operation detection system, applied to the converter pipeline operation detection system according to any one of claims 1 to 8, characterized in that: The method comprises: Acquiring the detected temperature of the temperature sensor; The heater is controlled based on the detected temperature so that the pipe temperature of the sampling water pipe is greater than a preset first temperature threshold.

10. The converter pipeline operation detection system control method according to claim 9, characterized in that: The controlling the heater based on the detected temperature includes: If the detected temperature is less than or equal to the first temperature threshold, controlling the heater to be powered on; If the detected temperature is greater than a preset second temperature threshold, the heater is controlled to be powered off, and the second temperature threshold is greater than the first temperature threshold.

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