CN219603615U - Leakage detection device for blast furnace tuyere sleeve - Google Patents
Leakage detection device for blast furnace tuyere sleeve Download PDFInfo
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- CN219603615U CN219603615U CN202320926648.6U CN202320926648U CN219603615U CN 219603615 U CN219603615 U CN 219603615U CN 202320926648 U CN202320926648 U CN 202320926648U CN 219603615 U CN219603615 U CN 219603615U
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Abstract
The utility model discloses a leakage detection device of a blast furnace tuyere sleeve, which comprises a device body, wherein the interior of the device body is hollow, a water inlet valve and a water outlet valve which are communicated with the interior of the device body are arranged on the side wall of the device body, the other end of the water inlet valve is communicated with a cooling water outlet pipe of the tuyere sleeve, a gas collecting mechanism and a pressure valve are further arranged on the device body, and the lower end of the gas collecting mechanism is communicated with the interior of the device body. When the tuyere sleeve leaks water, a passage is formed between the cooling water pipe and the furnace, and high-pressure gas in the furnace enters the cooling water pipeline through the damaged part. Therefore, whether the tuyere sleeve leaks water can be judged by only detecting whether the cooling water pipe contains coal gas. According to the principle, the air port sleeve water leakage can be judged by detecting the concentration of the gas in the cooling water pipe exceeding 100ppm, even if the air port sleeve only slightly leaks, the air port sleeve water leakage can be detected, the detection precision is high, and the operation is simple.
Description
Technical Field
The utility model relates to a leakage detection device of a blast furnace tuyere sleeve, and belongs to the technical field of blast furnace ironmaking.
Background
In the blast furnace air supply device, a middle sleeve and a small sleeve are arranged at the forefront end of an air port, and under the condition that the theoretical combustion temperature is 2200-2300 ℃, the condition of burning loss and water leakage easily occur. The current method for detecting leakage of the small sleeve in the tuyere comprises the following steps: the method for measuring inlet and outlet water temperature, the method for measuring inlet and outlet water pressure, the method for measuring inlet and outlet water flow, the direct observation method and the like are not intuitive. When the water leakage of the small sleeve in the blast furnace tuyere is small, the phenomenon is not obvious, and in normal production, the leakage checking work for checking whether the tuyere sleeve leaks is basically carried out by old staff through experience, so that the old staff can easily misjudge, further the furnace is stopped, undamaged tuyere accessories are replaced, the time is wasted, and the production speed is also influenced.
Disclosure of Invention
The utility model aims at solving the problems in the prior art and provides a blast furnace tuyere sleeve leakage detection device which can accurately judge whether a middle sleeve or a small sleeve of a blast furnace tuyere is damaged or not and improve the accuracy; and the leak detection workload is reduced.
In order to achieve the above object, the technical scheme of the present utility model is as follows:
the utility model provides a leak hunting device of blast furnace tuyere cover, includes the device body, the inside cavity of device body, just the lateral wall of device body is provided with the water intaking valve and the drain valve that communicate with each other with the device body inside, the height of drain valve needs to be higher than the height of water intaking valve, the other end of water intaking valve and the cooling water outlet pipe intercommunication of tuyere cover, still install gas production mechanism and pressure valve on the device body, gas production mechanism's lower extreme communicates with each other with the device body inside.
Further, the gas sampling mechanism comprises a sampling tube and a balloon, the lower end of the sampling tube is communicated with the inside of the device body, and the balloon is sleeved at the upper end of the sampling tube.
Further, the water inlet valve and the water outlet valve are respectively distributed on two sides of the device body.
Further, the gas production mechanism and the pressure valve are both positioned at the top end of the device body.
Furthermore, the device body is made of metal materials and is in a cylindrical or conical structure.
Further, the device body downside is fixed and is provided with the support frame, the removal wheel that has the brake spare is installed to the support frame bottom.
The utility model has the beneficial effects that:
1. when the gas concentration in the cooling water pipe exceeds 100ppm, the water leakage of the tuyere sleeve can be judged, the device has high detection precision, and even if the tuyere sleeve only slightly leaks, the device can also detect the water leakage.
2. The device is simple to operate, and even a new employee with a short experience can check out water leakage of the air outlet sleeve through the device.
3. The method realizes the rapid judgment of whether the tuyere sleeve is damaged, improves the detection efficiency, is beneficial to reducing the heat energy loss of the blast furnace, reduces the increase of the fuel ratio and the rise of the iron-making cost caused by the underheating of the hearth, and improves the economic benefit. Meanwhile, the malignant accident of slag iron ejection in the tuyere sleeve body burning through furnace is avoided, and the safety of equipment use is improved.
Drawings
FIG. 1 is a front view of the present utility model;
the device comprises a water inlet valve 1, a water inlet valve 2, a water outlet valve 3, a balloon 4, a sampling tube 5, a pressure gauge 6 and a device body.
Detailed Description
The utility model is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and are not intended to limit the scope of the present utility model.
Example 1
The leakage detection device of the blast furnace tuyere sleeve shown in fig. 1 comprises a device body 6, wherein the interior of the device body 6 is hollow, a water inlet valve 1 and a water outlet valve 2 which are communicated with the interior of the device body 6 are arranged on the side wall of the device body 6, the other end of the water inlet valve 1 is communicated with a cooling water outlet pipe of the tuyere sleeve, a gas collection mechanism and a pressure valve are further arranged on the device body 6, the gas collection mechanism is used for collecting gas in the device body 6, the pressure valve is used for observing pressure change in the device body 6, and the lower end of the gas collection mechanism is communicated with the interior of the device body 6. The device body 6 is made of metal material (such as stainless steel or alloy material) and has a cylindrical or conical shape.
In order to facilitate the collection of gas and the observation of pressure conditions, the gas collection mechanism and the pressure valve are both located at the top end of the device body 6. The gas sampling mechanism comprises a sampling tube 4 and a balloon 3, the lower end of the sampling tube 4 is fixedly connected with a device body 6 and is communicated with the inside of the device body 6, and the balloon 3 is sleeved at the upper end of the sampling tube 4. When sampling is needed, the balloon 3 is sleeved at the upper end of the sampling tube 4, and the balloon 3 can be fixed on the sampling tube 4 through rubber bands or clips. After the balloon 3 is filled with gas, the balloon 3 is removed for gas detection.
Specifically, the water inlet valve 1 and the water outlet valve 2 are respectively distributed on two sides of the device body 6, the height of the water outlet valve 2 is higher than that of the water inlet valve 1, when the air gap is leaked, the water outlet valve 2 is used for discharging air existing in the device body 6, the water inlet valve 1 is detachably connected with a cooling water outlet pipe of the air gap sleeve, and the water inlet valve 1 is used for controlling water of the cooling water outlet pipe to flow into the device body 6.
The device body 6 downside is fixed and is provided with the support frame, and the removal wheel that has the brake piece is all installed to the bottom four corners department of support frame. The support frame and the moving wheels are arranged, so that the whole leak detection device can be conveniently moved to a detection platform (not shown in fig. 1) of the blast furnace.
The working principle of the utility model is as follows: the blast furnace tuyere sleeve is generally of a cavity through-flow structure, water is fed from one end, water is discharged from the other end, and cooling water enters the tuyere sleeve in a perfusion mode, so that the tuyere sleeve is cooled. When the tuyere small sleeve or the middle sleeve leaks water, a passage is formed between the cooling water pipe and the furnace, and high-pressure gas in the furnace enters the cooling water pipe through the damaged part. Whether the medium and small sleeves in the tuyere leak water can be judged by only detecting whether the cooling water pipe contains coal gas.
The operation steps of this embodiment are: firstly, communicating a water inlet valve 1 of a leak detection device with a cooling water outlet pipe of a tuyere sleeve to be inspected; and then the balloon 3 is tied on the sampling tube 4, after the water discharge valve 2 and the water inlet valve 1 are opened, the water level in the device body 6 gradually rises, the air in the device body 6 is discharged through the water discharge valve 2, and after the water discharge valve 2 discharges water, the water discharge valve 2 is closed. And (3) observing the pressure change of the pressure gauge 5, closing the water inlet valve 1 after opening the water inlet valve for 15-10 seconds, and detecting the gas concentration of the gas in the balloon 3, wherein the concentration exceeds 100ppm, so that the water leakage can be judged. To ensure accurate sampling, samples were taken 3 times in succession.
The foregoing is a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principle of the present utility model, and these modifications and variations should also be regarded as the scope of the utility model.
Claims (6)
1. The utility model provides a leak hunting device of blast furnace tuyere cover, its characterized in that includes device body (6), the inside cavity of device body (6), just the lateral wall of device body (6) be provided with the inside communicating water intaking valve (1) of device body (6) and drain valve (2), the other end of water intaking valve (1) and tuyere cover's cooling water outlet pipe intercommunication, still install gas production mechanism and pressure valve on device body (6), gas production mechanism's lower extreme communicates with each other with device body (6) inside.
2. The leakage detection device of the blast furnace tuyere sleeve according to claim 1, wherein the gas sampling mechanism comprises a sampling tube (4) and a balloon (3), the lower end of the sampling tube (4) is communicated with the inside of the device body (6), and the balloon (3) is sleeved at the upper end of the sampling tube (4).
3. The leakage detection device of the blast furnace tuyere sleeve according to claim 1, wherein the water inlet valve (1) and the water outlet valve (2) are respectively distributed on two sides of the device body (6), and the height of the water outlet valve (2) is higher than that of the water inlet valve (1).
4. The leakage detection device of the blast furnace tuyere sleeve according to claim 1, wherein the gas collecting mechanism and the pressure valve are both positioned at the top end of the device body (6).
5. The leakage detection device of the blast furnace tuyere sleeve according to claim 1, wherein the device body (6) is made of a metal material and is in a cylindrical or conical structure.
6. The leakage detection device of the blast furnace tuyere sleeve according to claim 1, wherein a supporting frame is fixedly arranged on the lower side of the device body (6), and a moving wheel with a brake piece is arranged below the supporting frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320926648.6U CN219603615U (en) | 2023-04-23 | 2023-04-23 | Leakage detection device for blast furnace tuyere sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320926648.6U CN219603615U (en) | 2023-04-23 | 2023-04-23 | Leakage detection device for blast furnace tuyere sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219603615U true CN219603615U (en) | 2023-08-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320926648.6U Active CN219603615U (en) | 2023-04-23 | 2023-04-23 | Leakage detection device for blast furnace tuyere sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219603615U (en) |
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2023
- 2023-04-23 CN CN202320926648.6U patent/CN219603615U/en active Active
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