Blast furnace shaft leakage detection gas detection device

Abstract

The application discloses a blast furnace shaft leak detection gas detection device, which comprises a gas collector, a connecting rod is fixedly connected to the top of the gas collector, a gas-liquid position sensor is fixedly connected to the top of the connecting rod, a transmission pipe is communicated with the top of the gas collector, the gas collector is welded with the transmission pipe, a gas path switching valve group is communicated with the end of the transmission pipe away from the gas collector, a first connecting nut is arranged between the transmission pipe and the gas path switching valve group, and a gas-water separator input pipe is communicated with the bottom of the gas path switching valve group. The device can accurately, quickly and efficiently detect the damage and water leakage of each cooling branch pipe of the cooling wall, realize automatic water leakage alarm, improve the leakage detection precision and efficiency, shorten the leakage detection time, reduce the operation risk and labor intensity of workers in the field, and is simple to install on site, short in construction period and low in construction difficulty.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of blast furnace iron-making cooling device, in particular to a blast furnace shaft leakage detection gas detection device. BACKGROUND

[0002] Real-time monitoring of whether the blast furnace body cooling wall is damaged has important practical significance. When the cooling wall is damaged, cooling water will leak into the furnace. If it is not found and handled in time, it will consume a large amount of heat in the furnace, causing the furnace temperature to drop, and in severe cases, even causing the blast furnace to cool down, affecting normal production. At the same time, the blast furnace gas in the furnace will also enter the cooling water pipe in the upper part of the shaft, posing a considerable threat to the safety of blast furnace production.

[0003] The traditional detection method is manual detection. This method has the problems of high labor intensity, low detection accuracy and timeliness, and high possibility of misjudgment. A more advanced method is to install a high-precision flow meter at the inlet and outlet of the cooling wall to be detected, and use the flow difference to detect the damage of the cooling wall. The disadvantage of this method is that the installation process is relatively long, the labor intensity of installation and construction is high, and the cost of equipment investment is relatively high. It is not economical under the condition of a large number of cooling wall water pipes.

[0004] Therefore, it is necessary to invent a new blast furnace shaft leakage detection gas detection device to solve the above problems. SUMMARY

[0005] The purpose of the present application is to provide a blast furnace shaft leakage detection gas detection device that can accurately and quickly detect the damage of each cooling branch pipe of the cooling wall, realize automatic alarm of water leakage, improve the detection accuracy and efficiency, shorten the detection time, reduce the operation risk and labor intensity of workers on site, and reduce the construction difficulty, so as to solve the problems of high labor intensity, low detection accuracy and timeliness, and high possibility of misjudgment in the prior art.

[0006] In order to achieve the above purpose, the present application provides the following technical scheme: a blast furnace shaft leakage detection gas detection device, comprising a gas collector, the top of the gas collector is fixedly connected with a connecting rod, the top of the connecting rod is fixedly connected with a gas-liquid position sensor, the top of the gas collector is communicated with a transmission pipe, the gas collector and the transmission pipe are welded, one end of the transmission pipe away from the gas collector is communicated with a gas path switching valve group, a first connecting nut is arranged between the transmission pipe and the gas path switching valve group;

[0007] The bottom of the gas path conversion valve group is communicated with a gas-water separator input pipe, a second connecting nut is connected between the gas path conversion valve group and the gas-water separator input pipe, the right side of the gas path conversion valve group is communicated with a bypass port, the end of the gas-water separator input pipe away from the gas path conversion valve group is communicated with a gas-liquid separator group, and the side of the gas-liquid separator group is communicated with a blast furnace gas sensor.

[0008] Preferably, the top of the gas-liquid position sensor is fixedly connected with a first electromagnetic valve and a second electromagnetic valve, the inside of the gas-liquid position sensor is provided with a first sliding groove and a second sliding groove, and the inside of the gas-liquid position sensor is slidably connected with a first sliding block electrically connected with the first electromagnetic valve and a second sliding block electrically connected with the second electromagnetic valve.

[0009] Preferably, the side of the first sliding block close to the transmission pipe is fixedly connected with a first sealing block matched with the transmission pipe, the two sides of the first sliding block are fixedly connected with protrusions matched with the first sliding groove, the bottom of the second sliding block is fixedly connected with a sealing gasket, the two sides of the second sliding block are fixedly connected with sliding blocks matched with the second sliding groove, and the side of the second sliding block close to the bypass port is fixedly connected with a second sealing block matched with the bypass port.

[0010] Preferably, the inside of the gas-liquid separator group is fixedly connected with a speed reduction pipe, the bottom of the gas-liquid separator group is communicated with a water outlet, and the outside of the water outlet is provided with a throttle valve.

[0011] Preferably, the shape of the speed reduction pipe is spiral, and the top radius of the speed reduction pipe is greater than the bottom radius.

[0012] Preferably, the gas-liquid separator group and the blast furnace gas sensor are both communicated with a gas-water separator output pipe.

[0013] Preferably, the end of the gas-water separator output pipe close to the gas-liquid separator group is fixedly connected with a tapered port, and a plurality of air inlet holes are formed in the inside of the tapered port.

[0014] Preferably, the first connecting nut is rotatably connected with the transmission pipe, the first connecting nut is threadedly connected with the gas path conversion valve group, the second connecting nut is rotatably connected with the gas-water separator input pipe, and the second connecting nut is threadedly connected with the gas path conversion valve group.

[0015] Preferably, the output end of the gas-liquid position sensor is electrically connected with a single-chip microcomputer, the output end of the blast furnace gas sensor is electrically connected with the input end of the single-chip microcomputer, the electrical input end of the gas path conversion valve group is electrically connected with the output end of the single-chip microcomputer, the input end of the single-chip microcomputer is electrically connected with a reset switch, and the alarm indicator lamp is electrically connected with the output end of the single-chip microcomputer.

[0016] In the above technical solutions, the present application provides technical effects and advantages:

[0017] The quick connection interface at the lowermost end of the gas collector is connected with the quick valve interface welded on the blast furnace cooling wall communication pipe, facilitating assembly and disassembly of the device, greatly reducing the difficulty of installation, and the gas-liquid position sensor can detect the position of the gas-liquid inside in real time, and when the position reaches the specified limit, the gas path switching valve group is started, the gas collector is connected with the gas-liquid separator group through the transmission pipe, the gas path switching valve group and the gas-water separator input pipe, facilitating to enhance the automation degree of the device, improve the detection efficiency, and the timeliness is high;

[0018] The gas-liquid two-phase flow enters the gas-liquid separator group inside, is spirally lowered through the speed reduction pipe, is slowed down, and after reaching the end of the speed reduction pipe, the liquid part enters the bottom of the gas-liquid separator group, and the remaining gas is output to the blast furnace gas sensor detection area through the conical port, the blast furnace gas sensor detects the gas, and after the detection is completed, the single-chip microcomputer controls the opening of the throttle valve at the lower end of the gas-liquid separator group, so that the liquid inside the gas-liquid separator group flows out through the water outlet, and the detection accuracy is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0020] Figure 1 It is a whole structure schematic view of the embodiment one of the present application.

[0021] Figure 2 It is a side view three-dimensional structure schematic view of the embodiment one of the present application.

[0022] Figure 3 It is an internal structure schematic view of the embodiment one of the present application.

[0023] Figure 4 It is an internal structure schematic view of the gas path switching valve group of the embodiment one of the present application.

[0024] Figure 5 It is a first sliding block three-dimensional structure schematic view of the embodiment one of the present application.

[0025] Figure 6 It is a second sliding block three-dimensional structure schematic view of the embodiment one of the present application.

[0026] Figure 7 It is an internal structure schematic view of the gas-liquid separator group of the embodiment one of the present application.

[0027] Figure 8 This is a schematic diagram showing the detailed structure of the gas-water separator output pipe according to Embodiment 1 of the present invention;

[0028] Figure 9 This is a schematic diagram of the overall structure of Embodiment 2 of the present invention;

[0029] Figure 10 This is a system control flowchart of the present invention.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Gas collector; 2. Connecting rod; 3. Gas-liquid position sensor; 4. Transmission pipe; 5. First chute; 6. Gas path switching valve assembly; 7. First connecting nut; 8. Gas-liquid separator input pipe; 9. Second connecting nut; 10. Bypass port; 11. First solenoid valve; 12. Second solenoid valve; 13. First sliding block; 14. Second chute; 15. Second sliding block; 16. Gas-liquid separator assembly; 161. Reduction tube; 162. Water outlet; 163. Throttling valve; 17. Blast furnace gas sensor; 18. Gas-liquid separator output pipe; 181. Conical inlet; 182. Air inlet; 19. Microcontroller; 20. Alarm indicator light; 21. Reset switch. Detailed Implementation

[0032] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0033] This invention provides, for example Figures 1-7 The blast furnace body leak detection gas detection device shown includes a gas collector 1, a connecting rod 2 fixedly connected to the top of the gas collector 1, a gas-liquid position sensor 3 fixedly connected to the top of the connecting rod 2, a transmission pipe 4 connected to the top of the gas collector 1, the gas collector 1 and the transmission pipe 4 being welded together, a gas path switching valve group 6 connected to the end of the transmission pipe 4 away from the gas collector 1, and a first connecting nut 7 being provided between the transmission pipe 4 and the gas path switching valve group 6.

[0034] The bottom of the gas path switching valve group 6 is connected to the gas-liquid separator input pipe 8. A second connecting nut 9 is connected between the gas path switching valve group 6 and the gas-liquid separator input pipe 8. A bypass port 10 is connected to the right side of the gas path switching valve group 6. The end of the gas-liquid separator input pipe 8 away from the gas path switching valve group 6 is connected to the gas-liquid separator group 16. A blast furnace gas sensor 17 is connected to the side of the gas-liquid separator group 16.

[0035] In the above technical solution, the data transmission interface of the gas detection device includes both wired RS485 and wireless methods.

[0036] In the above technical scheme, the top of the gas-liquid position sensor 3 is fixedly connected with the first electromagnetic valve 11 and the second electromagnetic valve 12, the inside of the gas-liquid position sensor 3 is provided with the first sliding groove 5 and the second sliding groove 14, the inside of the gas-liquid position sensor 3 is slidably connected with the first sliding block 13 electrically connected with the first electromagnetic valve 11 and the second sliding block 15 electrically connected with the second electromagnetic valve 12, when the first electromagnetic valve 11 is opened, the first sliding block 13 slides to the right, away from the transmission pipe 4, so that the transmission pipe 4 is communicated with the gas-water separator input pipe 8, at this time, the bypass port 10 is closed, when the second electromagnetic valve 12 is opened, the second sliding block 15 slides to the left to the top of the gas-water separator input pipe 8, away from the bypass port 10, so that the transmission pipe 4 is communicated with the bypass port 10, at this time, the gas-water separator input pipe 8 is closed, and the gas-liquid flow direction can be controlled as needed.

[0037] In the above technical scheme, the side of the first sliding block 13 close to the transmission pipe 4 is fixedly connected with the first sealing block matched with the transmission pipe 4, and the two sides of the first sliding block 13 are fixedly connected with the protruding blocks matched with the first sliding groove 5, the bottom of the second sliding block 15 is fixedly connected with the sealing pad, and the two sides of the second sliding block 15 are fixedly connected with the sliding blocks matched with the second sliding groove 14, the side of the second sliding block 15 close to the bypass port 10 is fixedly connected with the second sealing block matched with the bypass port 10, and the transmission pipe 4, the gas-water separator input pipe 8 and the bypass port 10 can be sealed.

[0038] In the above technical scheme, the inside of the gas-liquid separator group 16 is fixedly connected with the speed reduction pipe 161, the bottom of the gas-liquid separator group 16 is communicated with the water outlet 162, the outside of the water outlet 162 is installed with the throttle valve 163, and the liquid in the gas-liquid separator is emptied.

[0039] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 , Figure 8 and Figure 9 , the shape of the speed reduction pipe 161 is set as a spiral shape, and the top surface radius of the speed reduction pipe 161 is greater than the bottom surface radius, so that the gas-liquid two-phase flow is conveniently reduced and separated.

[0040] In the above technical scheme, the gas-liquid separator group 16 and the blast furnace gas sensor 17 are communicated with the gas-water separator output pipe 18, so that the separated gas is conveniently transmitted to the inside of the blast furnace gas sensor 17 for detection.

[0041] In the technical scheme, the conical port 181 is fixedly connected to one end of the gas-water separator output pipe 18 close to the gas-liquid separator group 16, a plurality of air inlet holes 182 are formed in the conical port 181, and the water in the gas in the gas-water separator output pipe 18 can be further adsorbed.

[0042] In the technical scheme, the first connecting nut 7 is rotationally connected with the transmission pipe 4, the first connecting nut 7 is threadedly connected with the gas path conversion valve group 6, the second connecting nut 9 is rotationally connected with the gas-water separator input pipe 8, and the second connecting nut 9 is threadedly connected with the gas path conversion valve group 6, so that the device can be assembled and disassembled.

[0043] In the technical scheme, the output end of the gas-liquid position sensor 3 is electrically connected with a single-chip microcomputer 19, the output end of the blast furnace gas sensor 17 is electrically connected with the input end of the single-chip microcomputer 19, the electrical input end of the gas path conversion valve group 6 is electrically connected with the output end of the single-chip microcomputer 19, the input end of the single-chip microcomputer 19 is electrically connected with a reset switch 21, and the alarm indicator lamp 20 is electrically connected with the output end of the single-chip microcomputer 19, so that the automation degree of the device is improved, and the low efficiency caused by manual detection is avoided.

[0044] According to the first embodiment of the present application, if the data transmission of the gas detection device adopts a wireless mode, the system also needs to be equipped with a corresponding wireless network base station for receiving the wireless signal data emitted by the device.

[0045] The second embodiment is different from the first embodiment in that the gas-liquid separator group 16 is a tubular structure with an upper and lower through hole, and the gas-liquid separator group 16 is integrally connected with the blast furnace gas sensor 17.

[0046] Working principle of the present application:

[0047] Refer to the drawings in the specification Figures 1-9, first, according to the first embodiment, the user can be connected through the quick connection interface of the lowermost position of the gas collector 1 with the quick valve interface welded on the blast furnace cooling wall communication pipe, through the first connecting nut 7, the transmission pipe 4 can be detachably connected with the gas-liquid position sensor 3, through the second connecting nut 9, the gas-liquid separator input pipe 8 can be detachably connected with the gas-liquid position sensor 3, the gas collector 1 is communicated with the gas path conversion valve group 6 through the transmission pipe 4, wherein the gas-liquid position sensor 3 can detect the internal gas-liquid position in real time, the gas-liquid position sensor 3 transmits the collected data into the single-chip microcomputer 19, and the single-chip microcomputer 19 carries out corresponding numerical comparison and calculation, and if the position reaches the specified limit, the corresponding output end sends a command, the gas collector 1 is communicated with the gas-liquid separator group 16 through the transmission pipe 4, the gas path conversion valve group 6 and the gas-liquid separator input pipe 8, after the gas-liquid two-phase flow enters the inside of the gas-liquid separator group 16, it is reduced by the spiral descending of the speed reduction pipe 161, and after reaching the end of the speed reduction pipe 161, the liquid part enters the bottom of the gas-liquid separator group 16, and the remaining gas enters the inside of the gas-liquid separator output pipe 18 through the tapered port 181, the tapered port 181 can further adsorb the water in the entering gas, so that the dry gas is input to the detection area of the blast furnace gas sensor 17, and the blast furnace gas sensor 17 detects the gas and outputs the detected data to the single-chip microcomputer 19 in real time for storage. After the detection work is completed, the single-chip microcomputer 19 controls to open the throttle valve 163 at the lower end of the gas-liquid separator group 16, so that the liquid in the gas-liquid separator group 16 flows out through the water outlet 162;

[0048] When the first electromagnetic valve 11 and the second electromagnetic valve 12 are both closed, the transmission pipe 4 and the bypass port 10 are both closed, when the first electromagnetic valve 11 is opened, the first sliding block 13 slides to the right, away from the transmission pipe 4, so that the transmission pipe 4 is communicated with the gas-liquid separator input pipe 8, at this time, the bypass port 10 is closed, when the second electromagnetic valve 12 is opened, the second sliding block 15 slides to the left to the top of the gas-liquid separator input pipe 8, away from the bypass port 10, so that the transmission pipe 4 is communicated with the bypass port 10, at this time, the gas-liquid separator input pipe 8 is closed, which can control the gas-liquid flow direction as needed;

[0049] The drawings accompanying the specification are referred to in the description and constitute a part of it; Figures 8-9 In the second embodiment, if the data transmission of the present application adopts a wireless mode, the system also needs to be equipped with a corresponding wireless network base station for receiving wireless signal data emitted by the device, which can store and analyze the data, and automatically issue an audible and light alarm in case of water leakage. The device can reduce the risk and labor intensity of the blast furnace water worker in the field leak detection operation, and provide solid equipment support for the safe and stable production operation of the blast furnace.

[0050] The foregoing merely illustrates some exemplary embodiments of the application, and no doubt numerous modifications and alterations thereto will be apparent to those skilled in the art. Accordingly, the above description is intended for purposes of illustration only and should not be construed as limiting the scope of the application.

Claims

1. A gas detection device for detecting leaks in a blast furnace shaft, comprising a gas collector (1), characterized in that: The top of the gas collector (1) is fixedly connected with a connecting rod (2), the top of the connecting rod (2) is fixedly connected with a gas-liquid position sensor (3), the top of the gas collector (1) is communicated with a transmission pipe (4), the gas collector (1) is welded with the transmission pipe (4), one end of the transmission pipe (4) away from the gas collector (1) is communicated with a gas path switching valve group (6), and a first connecting nut (7) is arranged between the transmission pipe (4) and the gas path switching valve group (6). The bottom of the gas path switching valve group (6) is communicated with a gas-water separator input pipe (8), the gas path switching valve group (6) is connected with the second connecting nut (9) between the gas path switching valve group (6) and the gas-water separator input pipe (8), the right side of the gas path switching valve group (6) is communicated with a bypass port (10), one end of the gas-water separator input pipe (8) away from the gas path switching valve group (6) is communicated with a gas-liquid separator group (16), and the side of the gas-liquid separator group (16) is communicated with a blast furnace gas sensor (17). The gas detection device data transmission interface comprises wired RS485 and wireless modes.

2. The apparatus of claim 1, wherein: The top of the gas-liquid position sensor (3) is fixedly connected with a first electromagnetic valve (11) and a second electromagnetic valve (12), the inside of the gas-liquid position sensor (3) is provided with a first sliding groove (5) and a second sliding groove (14), and the inside of the gas-liquid position sensor (3) is slidably connected with a first sliding block (13) electrically connected with the first electromagnetic valve (11) and a second sliding block (15) electrically connected with the second electromagnetic valve (12).

3. The apparatus of claim 2, wherein: The side of the first sliding block (13) close to the transmission pipe (4) is fixedly connected with a first sealing block matched with the transmission pipe (4), the two sides of the first sliding block (13) are fixedly connected with protrusions matched with the first sliding groove (5), the bottom of the second sliding block (15) is fixedly connected with a sealing gasket, and the two sides of the second sliding block (15) are fixedly connected with sliding blocks matched with the second sliding groove (14), and the side of the second sliding block (15) close to the bypass port (10) is fixedly connected with a second sealing block matched with the bypass port (10).

4. The apparatus of claim 1, wherein: The inside of the gas-liquid separator group (16) is fixedly connected with a speed reduction pipe (161), the bottom of the gas-liquid separator group (16) is communicated with a water outlet (162), and the outer side of the water outlet (162) is mounted with a throttle valve (163).

5. The apparatus of claim 4, wherein: The shape of the speed reduction pipe (161) is provided as a spiral shape, and the top surface radius of the speed reduction pipe (161) is greater than the bottom surface radius.

6. The apparatus of claim 1, wherein: The gas-liquid separator group (16) and the blast furnace gas sensor (17) are communicated with a gas-water separator output pipe (18).

7. The apparatus of claim 1, wherein: One end of the gas-water separator output pipe (18) close to the gas-liquid separator group (16) is fixedly connected with a conical port (181), and a plurality of air inlet holes (182) are arranged in the inside of the conical port (181).

8. The leak detection gas detection apparatus for a blast furnace shaft of claim 1, wherein: The first connecting nut (7) is rotationally connected with the transmission pipe (4), the first connecting nut (7) is threadedly connected with the gas path conversion valve group (6), the second connecting nut (9) is rotationally connected with the gas-water separator input pipe (8), and the second connecting nut (9) is threadedly connected with the gas path conversion valve group (6).

9. The apparatus of claim 1, wherein: The output end of the gas-liquid position sensor (3) is electrically connected with a single-chip microcomputer (19), the output end of the blast furnace gas sensor (17) is electrically connected with the input end of the single-chip microcomputer (19), the electric input end of the gas path conversion valve group (6) is electrically connected with the output end of the single-chip microcomputer (19), the input end of the single-chip microcomputer (19) is electrically connected with a reset switch (21), and the alarm indicator lamp (20) is electrically connected with the output end of the single-chip microcomputer (19).

Images