A post-processing line heating furnace pressure detection and condensate removal device

Abstract

The utility model provides a kind of post-processing line heating furnace pressure detection condensate removal device, it is related to condensate removal device technical field, including wall pipe, conducting valve, discharge valve and clear valve, wall pipe is connected with first pipeline, clear valve is installed in the end of first pipeline;First pipeline is connected with water collecting device by condensate pipe, water collecting device is connected with pressure transmitter, conducting valve is installed on condensate pipe position close to first pipeline;First pipeline is connected with second pipeline, discharge valve is installed on second pipeline.The utility model improves the stability of heating furnace pressure detection, reduces degraded product, improves heating furnace stable operation rate;It has good interchangeability, has great market promotion value;Solve the problem of detection pipeline condensate, detection instrument failure rate is greatly reduced, improves the economic value of unit operation.

Description

Technical Field

[0001] This utility model relates to the technical field of condensate removal devices, and more specifically, to a device for detecting furnace pressure and removing condensate in a post-processing line heating furnace. Background Technology

[0002] The No. 1 hot-dip galvanizing unit of a certain cold rolling mill was built in 1996, mainly producing large zinc flower products. In recent years, with the gradual increase in the number of galvanizing production lines in China and the intensification of market competition, the requirements for product quality have been continuously raised. The heating furnace is the core equipment of the galvanizing line; only with a stable heating furnace can high-quality products be produced. Among the various systems that ensure the stable operation of the heating furnace, the instrumentation and monitoring system is the "eye" of the annealing furnace.

[0003] The heating furnace mainly consists of the furnace body, refractory materials, combustion system, and instrumentation system, forming an organic whole. Maintaining stable furnace pressure is crucial for producing high-quality products during daily operation. During production, the furnace is filled with hydrogen-containing protective gas and operates under positive pressure. Excessive pressure compromises the furnace's seal, while insufficient pressure allows external gases to enter, posing quality and safety risks. Therefore, the accuracy, stability, and safety of furnace pressure monitoring are paramount. Solving the problem of stable furnace pressure requires addressing the issue of accurate pressure detection. The existing furnace pressure monitoring pipeline frequently generates condensate, interfering with pressure measurement and leading to inaccurate readings. This results in unstable operation of the annealing furnace and the production of many downgraded products.

[0004] Therefore, it is necessary to design a furnace pressure detection and condensate removal device for heating furnaces to solve problems such as stable detection and stable production of annealing furnaces. Utility Model Content

[0005] In response to the aforementioned technical problems, a device for detecting furnace pressure and removing condensate in a post-processing line heating furnace is provided.

[0006] The technical means adopted in this utility model are as follows: A device for detecting furnace pressure and removing condensate in a post-processing line heating furnace includes: a through-wall pipe, a conduction valve, a discharge valve, and a cleaning valve. The through-wall pipe is connected to a first pipeline, and the cleaning valve is installed at the end of the first pipeline. The first pipeline is connected to a water collection device via a condensate pipe. The water collection device is connected to a pressure transmitter. The control valve is installed on the condensate pipe near the first pipeline. The first pipeline is connected to a second pipeline, and the discharge valve is installed on the second pipeline.

[0007] Furthermore, the water collection device includes a water collection tank, and a drain valve is provided at the bottom of the water collection tank.

[0008] Furthermore, a water level gauge is connected to the water collection tank.

[0009] Furthermore, a flow valve is installed on the condensate pipe near the water collection tank.

[0010] Furthermore, the top of the water collection tank is connected to a pressure transmitter via a pressure tapping pipe.

[0011] Furthermore, the pressure tapping pipe is connected to the water collection tank 30mm from the top of the tank via an external thread.

[0012] This utility model also provides a method for using a furnace pressure detection and decondensation device for a post-processing line heating furnace, comprising the following steps: S1. During furnace start-up or furnace drying, the vent valve is closed and the exhaust valve is opened to release the furnace gas with high moisture content. After the furnace drying is completed, the exhaust valve is closed and the vent valve is opened. S2. Under normal operating conditions, the open valve is open, and the gas inside the furnace flows through the open valve and into the condensate pipe. Due to the temperature difference between the gas inside the furnace and the external environment, the water in the gas condenses into condensate when it flows through the end of the condensate pipe and flows into the water collection tank. According to the water level gauge, without exceeding the maximum liquid level of the water level gauge, open the drain valve to drain all the condensate in the water collection tank, and then close the drain valve. S3. The pressure transmitter detects the relatively dry gas inside the furnace through the pressure tapping pipe; S4. The cleaning valve is normally closed. When impurities or blockages are found in the pipeline, open the cleaning valve and use a long-handled tool to clean the pipeline.

[0013] Compared with the prior art, the present invention has the following advantages: 1. The condensate removal device for furnace pressure testing in the post-processing line provided by this utility model improves the stability of furnace pressure testing, reduces downgraded products, and increases the stable operation rate of the furnace; it has good interchangeability and great market promotion value; it solves the problem of condensate in the testing pipeline, greatly reduces the damage rate of testing instruments, and improves the economic value of unit operation.

[0014] 2. The condensate removal device for furnace pressure detection in the post-processing line heating furnace provided by this utility model, under normal working conditions, the conduction valve is open, and the gas inside the furnace flows through the conduction valve and through the condensate pipe. Due to the temperature difference between the gas inside the furnace and the external environment, when the gas inside the furnace flows through the end of the condensate pipe, the moisture in the gas condenses into condensate and flows into the water collection tank. The pressure transmitter detects the relatively dry gas inside the furnace through the pressure tapping pipe, which can minimize the impact of condensate in the detection pipeline on the accuracy of furnace pressure detection.

[0015] 3. The post-processing line heating furnace pressure detection and condensate removal device provided by this utility model can discharge furnace gas with high moisture content by closing the conduction valve and opening the discharge valve during furnace start-up or baking.

[0016] 4. The post-processing line heating furnace pressure detection and condensate removal device provided by this utility model can open the cleaning valve and use a long-handled tool to clean the pipeline when impurities or blockages are found in the pipeline.

[0017] Based on the above reasons, this utility model can be widely promoted in fields such as condensate removal. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the furnace pressure detection and condensate removal device for the post-processing line heating furnace of this utility model.

[0020] Figure 2 This is a schematic diagram of the condensate removal device of this utility model installed between the furnace pressure detection transmitter and the furnace pressure detection tube of the heating furnace.

[0021] In the diagram: 1. Through-wall pipe; 2. Pilot valve; 3. Drain valve; 4. Clearing valve; 5. Condensate pipe; 6. Water collection tank; 7. Water level gauge; 8. Drain valve; 9. Pressure tapping pipe; 10. Pressure transmitter. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] This utility model provides a condensate removal device for furnace pressure testing in a post-processing line heating furnace, relating to instrumentation and testing equipment for the heating furnace system of a galvanizing unit. A detailed structural diagram of the condensate removal device is shown below. Figure 1 As shown. A set of condensate removal devices of this invention (such as...) is installed between the furnace pressure detection transmitter and the furnace pressure detection tube. Figure 2 (As shown).

[0024] This utility model device includes a through-wall pipe 1 that penetrates the furnace wall and furnace shell, originally installed in the heating furnace; a flow valve 2, a drain valve 3, and a cleaning valve 4, all connected to a DN20 pipe connected to the through-wall pipe 1. The through-wall pipe 1 is connected to a first pipeline, and the cleaning valve 4 is installed at the end of the first pipeline. The first pipeline is connected to a water collection device via a condensate pipe 5, and the water collection device is connected to a pressure transmitter 10. The flow valve 2 is installed on the condensate pipe 5 near the first pipeline. The first pipeline is connected to a second pipeline, and the drain valve 3 is installed on the second pipeline. The water collection device includes a water collection tank 6, with a drain valve 8 at the bottom. A water level gauge 7 is connected to the water collection tank 6. Flow valves 2 are installed on the condensate pipe 5 near the water collection tank 6, meaning one flow valve 2 is installed at each end of the condensate pipe 5. The top of the water collection tank 6 is connected to the pressure transmitter 10 via a pressure tapping pipe 9. The pressure tapping pipe 9 is connected to the water collection tank 6 30mm from the top of the tank via an external thread.

[0025] This utility model also provides a method for using a furnace pressure detection and decondensation device for a post-processing line heating furnace, comprising the following steps: S1. When the discharge valve 3 is open, the conduction valve 2 is closed. The discharge valve 3 is mainly used to discharge furnace gas with high moisture content during furnace start-up or furnace drying. After the furnace drying is completed, the discharge valve 3 is closed and the conduction valve 2 is opened.

[0026] S2. The cleaning valve 4 is normally closed. If impurities or blockages are found in the pipeline, open the cleaning valve 4 and use a long-handled tool to clean the pipeline.

[0027] S3. Under normal operating conditions, the pilot valve 2 is open, and the gas inside the furnace flows through the pilot valve 2 and the condensate pipe 5. Due to the temperature difference between the gas inside the furnace and the external environment, the moisture in the gas condenses into condensate when it flows through the end of the condensate pipe 5 and flows into the water collection tank 6. Based on the water level of the water level gauge 7, and without exceeding the maximum liquid level of the water level gauge 7, the drain valve 8 is opened (the drain valve 8 is normally closed to ensure effective detection of the gas pressure inside the furnace) to drain all the condensate from the water collection tank 6, and then the drain valve 8 is closed.

[0028] S4. The pressure tapping pipe 9 is connected to the water collection tank 6 30mm from the top of the tank via an external thread. The pressure transmitter 10 detects the relatively dry gas inside the furnace through the pressure tapping pipe 9.

[0029] This invention is fully interchangeable and can be quickly replaced and widely applied in other heating furnace pressure and other testing instruments.

[0030] This invention can minimize the impact of condensate in the testing pipeline on the accuracy of furnace pressure testing.

[0031] This invention can improve the stability of furnace pressure detection in heating furnaces, reduce the generation of downgraded products, and improve the safe operation of heating furnaces.

[0032] This invention has been applied to a galvanizing unit in a cold rolling mill. It is easy to operate and can continuously collect and periodically discharge condensate in front of the furnace pressure testing device, reducing the risk of inaccurate furnace pressure testing, minimizing spare parts damage, lowering procurement costs, and improving the safety of the production process. It provides a reference for the accuracy of furnace pressure testing in similar heating furnaces and has great promotion and application value.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A device for detecting furnace pressure and removing condensate in a post-processing line heating furnace, characterized in that, include: The wall-penetrating pipe (1), the pilot valve (2), the discharge valve (3), and the clearing valve (4) are provided. The wall-penetrating pipe (1) is connected to a first pipeline, and the clearing valve (4) is installed at the end of the first pipeline. The first pipeline is connected to a water collection device via a condensate pipe (5), the water collection device is connected to a pressure transmitter (10), and the control valve (2) is installed on the condensate pipe (5) near the first pipeline. The first pipeline is connected to the second pipeline, and the discharge valve (3) is installed on the second pipeline.

2. The post-processing line heating furnace pressure detection and condensate removal device according to claim 1, characterized in that, The water collection device includes a water collection tank (6), and a drain valve (8) is provided at the bottom of the water collection tank (6).

3. The post-processing line heating furnace pressure detection and condensate removal device according to claim 2, characterized in that, A water level gauge (7) is connected to the water collection tank (6).

4. The post-processing line heating furnace pressure detection and condensate removal device according to claim 2, characterized in that, A flow valve (2) is installed on the condensate pipe (5) near the water collection tank (6).

5. The post-processing line heating furnace pressure detection and condensate removal device according to claim 2, characterized in that, The top of the water collection tank (6) is connected to the pressure transmitter (10) via a pressure tapping pipe (9).

6. The post-processing line heating furnace pressure detection and condensate removal device according to claim 5, characterized in that, The pressure tapping pipe (9) is connected to the water collection tank (6) 30mm from the top of the tank via an external thread.

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