A gas-water separation device for on-line humidification of a furnace nose and having gas leakage prevention and alarm prompting functions

Abstract

The utility model discloses a gas -water separation device for stove nose on -line humidification and with prevent gas leakage and alarm prompt function, including gas -water separation jar and water storage jar, the side of gas -water separation jar is equipped with mixed gas pipeline, mixed gas outlet pipeline, mixed gas pipeline is connected with mixed gas inlet pipeline, and mixed gas outlet pipeline is connected with stove nose's field pipeline, the inside of gas -water separation jar is equipped with airflow guide component and liquid level detection device, the upper end of airflow guide component is connected with the inside top end of gas -water separation jar, and the upper end of liquid level detection device passes through and is fixed to the top end of gas -water separation jar, the bottom of gas -water separation jar is equipped with water outlet pipe, the top of water storage jar is equipped with water inlet pipe, and water inlet pipe is connected with water outlet pipe, the bottom of water storage jar is equipped with drain pipeline, and the side of water storage jar is equipped with level meter, the utility model has the advantages of avoiding mixed gas (H2+N2) leakage and condensed water full alarm reminding when draining.

Description

Technical Field

[0001] This utility model relates to hot-dip galvanizing unit technology, and more specifically, to a gas-water separation device for online humidification of the furnace nose, with functions of preventing gas leakage and alarm indication. Background Technology

[0002] The furnace nose is a key component in a continuous hot-dip galvanizing production line, located between the annealing furnace outlet and the zinc pot. Its interior must maintain a specific reducing atmosphere (H2+N2) to prevent strip steel oxidation. Furnace nose humidification is achieved by injecting a small amount of water vapor into the furnace nose, thus actively inhibiting zinc ash (an oxidation product of zinc vapor).

[0003] The general method for humidifying the furnace nose is as follows: a mixed gas (H2+N2) is passed into warm water (55°~65°) to increase the humidity, and then injected into the furnace nose through an insulated pipe.

[0004] The temperature of a hot gas mixture (H2+N2) containing water vapor may drop in the insulated pipe. Saturated water vapor will precipitate from the mixture, adhere to the inner wall of the pipe, and then condense into water. If this condensed water flows into the furnace nose, it can cause serious production accidents, even leading to a zinc melt explosion. Therefore, a water-vapor separator needs to be installed at the end of the humidification pipe to collect the condensed water.

[0005] There are rudimentary gas-water separation devices for furnace nose pipes in hot-dip galvanizing units in steel plants. From the perspective of usage, they have shown significant improvement in reducing condensate entering the furnace nose and consequently reducing product surface defects. However, due to the incomplete design of the entire device, some shortcomings exist: such as... Figure 1 The diagram shows the general structure of an existing device. A vertical pipe 22 is installed on the humidified airflow pipeline (inlet horizontal pipe 20 and outlet horizontal pipe 21). A water storage tank 23 is installed at the lower end of the vertical pipe 22. A drain pipe 24 is connected to the lower part of the water storage tank 23, and a drain valve 25 is installed on the drain pipe 24. When the drain valve 25 is opened to discharge the condensate, the mixed gas (H2+N2) may also be discharged, posing a significant safety hazard. In addition, the water storage tank 23 lacks a warning function; when it is full, the condensate may flow into the furnace nose, causing a production accident. Utility Model Content

[0006] In view of the deficiencies in the existing technology, the purpose of this utility model is to provide a gas-water separation device for online humidification of the furnace nose and with functions of preventing gas leakage and alarm prompting, so as to solve the problems in the existing technology.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A gas-liquid separator for online humidification of the furnace nose, with functions of preventing gas leakage and alarm indication, includes a gas-liquid separator tank and a water storage tank;

[0009] The gas-water separator is provided with a mixed gas pipeline and a mixed gas outlet pipeline on its side. The mixed gas pipeline is connected to the mixed gas inlet pipeline, and the mixed gas outlet pipeline is connected to the field pipeline of the furnace nose.

[0010] The gas-liquid separator is equipped with an airflow guiding component and a liquid level detection device inside. The upper end of the airflow guiding component is connected to the top of the gas-liquid separator, and the upper end of the liquid level detection device passes through and is fixed to the top of the gas-liquid separator.

[0011] The bottom of the gas-liquid separator is equipped with a water outlet pipe;

[0012] The top of the water storage tank is equipped with a water inlet pipe, which is connected to the water outlet pipe;

[0013] The bottom of the water storage tank is equipped with a drainage pipe;

[0014] A level gauge is installed on the side of the water storage tank.

[0015] Preferably, the gas mixture outlet pipeline is equipped with a gas mixture outlet valve.

[0016] Preferably, the gas-mixing pipeline is connected to the gas-mixing intake pipeline via a detachable component;

[0017] The mixed gas outlet pipeline is connected to one side of the mixed gas outlet valve via a detachable component;

[0018] The other side of the mixed gas outlet valve is connected to the field pipeline of the furnace nose via a detachable component.

[0019] Preferably, the water outlet pipe is equipped with a separator tank outlet valve.

[0020] Preferably, one side of the outlet valve of the separator tank is connected to the outlet pipe via a detachable component;

[0021] The other side of the outlet valve of the separator tank is connected to the inlet pipe via a detachable component.

[0022] Preferably, a drain valve is provided on the drain pipe.

[0023] Preferably, one side of the drain valve is connected to the drain pipe via a detachable component;

[0024] The other side of the drain valve is connected to the wastewater pipeline via a detachable component.

[0025] Preferably, the lower end of the airflow guiding component is positioned toward the water outlet pipe.

[0026] This utility model provides a gas-liquid separation device for online humidification of the furnace nose, with functions of preventing gas leakage and alarm indication. By incorporating a mixed gas inlet pipeline, a gas-liquid separation tank, a liquid level detection device, a mixed gas outlet pipeline, a mixed gas outlet valve, a water outlet valve for the separation tank, a water storage tank, a liquid level gauge, a drain valve, a drain pipeline, and an airflow guiding component, this gas-liquid separation device improves the safety and reliability of the gas-liquid separation device, avoids safety hazards caused by mixed gas leakage during drainage, and prevents production accidents caused by condensate flowing into the furnace nose from an overflowing water storage tank. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of an existing gas-liquid separator;

[0028] Figure 2 This is a schematic diagram of the gas-liquid separation device of this utility model;

[0029] Figure 3 This is a front view schematic diagram of the gas-liquid separation device of this utility model;

[0030] Figure 4 This is a left-side schematic diagram of the gas-liquid separation device of this utility model;

[0031] Figure 5 This is a perspective view of the gas-water separation tank in the gas-water separation device of this utility model. Detailed Implementation

[0032] To better understand the above-mentioned technical solution of this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0033] Combination Figures 2 to 5 As shown, this utility model provides a gas-water separation device for online humidification of the furnace nose and with functions of preventing gas leakage and alarm prompting, including a gas-water separation tank 2 and a water storage tank 7.

[0034] The gas-water separator 7 is provided with a mixed gas pipeline 12 and a mixed gas outlet pipeline 4 on its side. The mixed gas pipeline 12 is connected and fixed to the mixed gas inlet pipeline 1 through a detachable component (flange or bolt). The mixed gas inlet pipeline 1 is connected to the mixed gas pipeline 100 of the humidification device. The mixed gas outlet pipeline 4 is provided with a mixed gas outlet valve 5. The mixed gas outlet pipeline 4 is connected and fixed to one side of the mixed gas outlet valve 5 through a detachable component. The other side of the mixed gas outlet valve 5 is connected and fixed to the field pipeline 200 of the furnace nose through a detachable component.

[0035] The gas-water separator 2 is equipped with an airflow guiding component 11 and a liquid level detection device 3. The upper end of the airflow guiding component 11 is connected and fixed to the top of the gas-water separator 2. The upper end of the liquid level detection device 3 passes through and is fixed to the top of the gas-water separator 2.

[0036] The humidified gas mixture is redirected by the airflow guide component 11 within the gas-water separator 2. Due to inertia, the airflow guide component impacts the baffle 11, allowing dry steam to bypass it and continue forward. Meanwhile, suspended water droplets accumulate on the airflow guide component 11, condensing and falling to the bottom of the gas-water separator 2. This effectively reduces the supersaturated humidity of the gas mixture (5%–10%), preventing water vapor from precipitating in subsequent pipes and flowing into the furnace nose. The water condensed in the separator is discharged into the water storage tank 7. If the water in the storage tank 7 is not drained promptly after it is full, the separator also functions as a water storage tank. As the water level in the separator rises, the float on the level detection device 3 installed on the separator will rise. When the water level exceeds the set level (15%–20%), the reed switch inside the level detection device 3 sends a switching signal to notify personnel that the warning level has been reached and manual drainage is necessary.

[0037] A water outlet pipe 13 is installed at the bottom of the gas-water separator 2.

[0038] The top of the water storage tank 7 is equipped with a water inlet pipe 14, and the water inlet pipe 13 and the water outlet pipe 14 are connected by a separator water outlet valve 6.

[0039] One side of the separator outlet valve 6 is connected and fixed to the outlet pipe 13 via a detachable component; the other side of the separator outlet valve 6 is connected and fixed to the inlet pipe 14 via a detachable component.

[0040] A drain pipe 15 is installed at the bottom of the water storage tank 7, and a drain valve 9 is installed on the drain pipe 15.

[0041] One side of the drain valve 9 is connected to the drain pipe 15 via a detachable component; the other side of the drain valve 9 is connected to the wastewater pipe 10 via a detachable component.

[0042] A level gauge 8 is installed on the side of the water storage tank 7.

[0043] When drainage is required, first close the outlet valve 6 of the separator tank above the water storage tank 7, then open the drain valve 9. Observe the drainage situation in the water storage tank 7 through the level gauge 8. Closing the outlet valve 6 of the separator tank is to prevent the mixed gas from being discharged together during drainage, which could cause safety hazards. After the water in the water storage tank 7 is emptied, close the drain valve 9 and open the outlet valve 6 of the separator tank to continue draining water into the water storage tank 7. Repeat this process several times until the water in the gas-water separator tank 2 and the water storage tank 7 is emptied. Repeat this process until all the water is drained. Under normal drainage conditions, the mixed gas outlet valve 5 is normally open (does not operate), and the mixed gas is normally introduced into the furnace nose (online without stopping the machine). When the furnace nose or other devices malfunction, the mixed gas outlet valve 5 can be closed to isolate and prevent cross-contamination.

[0044] Example

[0045] This embodiment provides a gas-water separation device for online humidification of the furnace nose and with air isolation function, including a mixed gas inlet pipeline 1, a gas-water separation tank 2, a liquid level detection device 3, a mixed gas outlet pipeline 4, a mixed gas outlet valve 5, a water outlet valve of the separation tank 6, a water storage tank 7, a liquid level gauge 8, a drain valve 9, a drain pipeline 10, and an airflow guiding component 11.

[0046] In this embodiment, the liquid level detection device 3 adopts a float switch, and the airflow guiding component 11 adopts a baffle.

[0047] In this embodiment, the gas-water separation device is connected as follows: the mixed gas inlet pipe 1 is welded to the mixed gas pipe of the welding furnace nose humidification device; the gas-water separation tank 2 is bolted to the mixed gas inlet pipe 1, the mixed gas outlet pipe 4, and the water outlet valve 6 of the separation tank via flanges at its front, rear, and bottom; the water storage tank 7 is also bolted to the water outlet valve 6 of the separation tank and the drain valve 9 via flanges; the drain pipe 10 below the drain valve 9 is welded to the drainage ditch; the liquid level detection device 3 and the liquid level gauge 8 are both connected to the gas-water separation tank 6 and the water storage tank 7 respectively via threaded connections; and the mixed gas outlet pipe 4 is welded to the furnace nose air inlet network.

[0048] The working principle and usage process of the gas-water separation device in this embodiment are as follows: An airflow guide component 11 is installed in the middle of the gas-water separation tank 2. The humidified mixed gas changes its flow direction within the gas-water separation tank 2. Due to inertia, the mixed gas impacts the airflow guide component 11. Dry steam can bypass the airflow guide component 11 and continue forward, while suspended water droplets accumulate on the airflow guide component 11 and condense, falling to the bottom of the gas-water separation tank 2. This effectively reduces the supersaturated humidity of the mixed gas (5%–10%), preventing water vapor from precipitating in subsequent pipes and flowing into the furnace nose. The water condensed in the separation tank is discharged into the water storage tank 7. If the water in the water storage tank 7 is full and not drained in time, the separation tank also has a water storage function. When the water level in the separation tank rises, the float on the liquid level detection device 3 installed on the separation tank rises. When the water level exceeds the set liquid level (15%–20%), the liquid level detection device... 3. The internal reed switch sends a switching signal to inform personnel that the warning water level has been reached and manual drainage is necessary. During drainage, first, the outlet valve 6 of the separator tank above the water storage tank 7 needs to be closed, and then the drain valve 9 needs to be opened. The drainage status of the water storage tank 7 is observed through the level gauge 8. The purpose of closing the outlet valve 6 of the separator tank is to prevent the mixed gas from being discharged together during drainage, which could cause safety hazards. After the water in the water storage tank 7 is drained, the drain valve 9 is closed and the outlet valve 6 of the separator tank is opened to continue draining water into the water storage tank 7. This process is repeated several times until the water in the gas-water separator tank 2 and the water storage tank 7 is drained. This process is repeated until all the water is drained. Under normal drainage conditions, the mixed gas outlet valve 5 is normally open (does not operate), and the mixed gas is normally introduced into the furnace nose (online without stopping the machine). When the furnace nose or other devices malfunction, the mixed gas outlet valve 5 can be closed to isolate and prevent cross-contamination.

[0049] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present utility model and are not intended to limit the present utility model. Any changes or modifications to the above embodiments within the scope of the essential spirit of the present utility model will fall within the scope of the claims of the present utility model.

Claims

1. A gas-liquid separator for online humidification of the furnace nose, with functions of preventing gas leakage and providing alarm indication, characterized in that: Includes gas-liquid separators and water storage tanks; The gas-water separator is provided with a mixed gas pipeline and a mixed gas outlet pipeline on its side. The mixed gas pipeline is connected to the mixed gas inlet pipeline, and the mixed gas outlet pipeline is connected to the field pipeline of the furnace nose. The gas-liquid separator is equipped with an airflow guiding component and a liquid level detection device inside. The upper end of the airflow guiding component is connected to the top of the gas-liquid separator, and the upper end of the liquid level detection device passes through and is fixed to the top of the gas-liquid separator. The bottom of the gas-liquid separator is equipped with a water outlet pipe; The top of the water storage tank is equipped with a water inlet pipe, which is connected to the water outlet pipe; The bottom of the water storage tank is equipped with a drainage pipe; A level gauge is installed on the side of the water storage tank.

2. The gas-liquid separator for online humidification of the furnace nose and with functions of preventing gas leakage and alarm indication as described in claim 1, characterized in that: A mixed gas outlet valve is provided on the mixed gas outlet pipeline.

3. The gas-liquid separator for online humidification of the furnace nose and with functions of preventing gas leakage and alarm indication as described in claim 2, characterized in that: The gas mixing pipeline is connected to the gas mixing inlet pipeline via a detachable component; The mixed gas outlet pipeline is connected to one side of the mixed gas outlet valve via a detachable component; The other side of the mixed gas outlet valve is connected to the field pipeline of the furnace nose via a detachable component.

4. The gas-liquid separator for online humidification of the furnace nose and with functions of preventing gas leakage and alarm indication as described in claim 1, characterized in that: The water outlet pipe is equipped with a separator tank outlet valve.

5. The gas-liquid separator for online humidification of the furnace nose and with functions of preventing gas leakage and alarm indication as described in claim 4, characterized in that: One side of the water outlet valve of the separator tank is connected to the water outlet pipe via a detachable component; The other side of the outlet valve of the separator tank is connected to the inlet pipe via a detachable component.

6. The gas-liquid separator for online humidification of the furnace nose and with functions of preventing gas leakage and alarm indication as described in claim 1, characterized in that: A drain valve is installed on the drainage pipe.

7. The gas-liquid separator for online humidification of the furnace nose and with functions of preventing gas leakage and alarm indication as described in claim 6, characterized in that: One side of the drain valve is connected to the drain pipe via a detachable component; The other side of the drain valve is connected to the wastewater pipeline via a detachable component.

8. The gas-liquid separator for online humidification of the furnace nose and with functions of preventing gas leakage and alarm indication as described in claim 1, characterized in that: The lower end of the airflow guiding component is positioned toward the water outlet pipe.

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