Condensate water removing device for furnace pressure detection of post-processing line heating furnace and using method thereof

Abstract

The invention provides an aftertreatment line heating furnace pressure detection condensate water removal device and a using method thereof, and relates to the technical field of condensate water removal devices.The aftertreatment line heating furnace pressure detection condensate water removal device comprises a through-wall pipe, a breakover valve, a drain valve and a clearing valve, the through-wall pipe is connected with a first pipeline, and the clearing valve is installed at the tail end of the first pipeline; the first pipeline is connected with a water collecting device through a condensate pipe, the water collecting device is connected with the pressure transmitter, and the breakover valve is installed at the position, close to the first pipeline, of the condensate pipe; the first pipeline is connected with a second pipeline, and the discharge valve is installed on the second pipeline. The stability of furnace pressure detection of the heating furnace is improved, degraded products are reduced, and the stable operation rate of the heating furnace is improved; good interchangeability is achieved, and great market popularization value is achieved; the problem of pipeline condensate water detection is solved, the damage rate of a detection instrument is greatly reduced, and the economic value of unit operation is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of condensate water removal devices, in particular, especially relates to a post-treatment line heating furnace pressure detection condensate water removal device and a use method thereof. BACKGROUND

[0002] A certain cold-rolled general plant 1# hot galvanizing unit was built in 1996, mainly producing large zinc flower products. In recent years, with the gradual increase in the number of domestic galvanizing production lines, market competition intensifies, and the requirement for product quality is continuously improved. The heating furnace is the core equipment of the galvanizing line, and the heating furnace state is stable, so that high-quality products can be produced. Among the various systems that ensure the stable operation of the heating furnace, the instrument detection system is the "eyes" of the stable operation of the annealing furnace.

[0003] The heating furnace is mainly composed of a furnace body, refractory material, a combustion system, an instrument detection system and the like, and constitutes an organic whole. In the daily operation of the heating furnace, maintaining stable furnace pressure is the key to producing high-quality products. During production, the heating furnace is filled with hydrogen-containing protective gas, and always maintains positive pressure operation. If the furnace pressure is too high, the sealing of the heating furnace will be damaged, and if the furnace pressure is too low, external gas will enter, which will cause quality and safety risks. Therefore, the accuracy, stability and safety of the furnace pressure detection are crucial. To solve the problem of stable furnace pressure, the problem of accurate furnace pressure detection must be solved. In the original furnace pressure detection pipeline, condensate water is often produced, which interferes with the furnace pressure detection, resulting in inaccurate detection, causing the annealing furnace to be unable to operate stably, and producing a large number of degraded products.

[0004] Therefore, it is necessary to design a heating furnace pressure detection condensate water removal device to solve the problems of stable detection, stable production and the like of the annealing furnace. SUMMARY

[0005] According to the above technical problems, a post-treatment line heating furnace pressure detection condensate water removal device and a use method thereof are provided.

[0006] The technical means adopted by the present application are as follows: A post-treatment line heating furnace pressure detection condensate water removal device, comprising: a through-wall pipe, a through valve, a discharge valve and a clear valve, the through-wall pipe is connected with a first pipeline, and the clear valve is installed at the end of the first pipeline; The first pipeline is connected with a water collecting device through a condensate water pipe, the water collecting device is connected with a pressure transmitter, and the through valve is installed on the condensate water pipe close to the first pipeline; The first pipeline is connected with a second pipeline, and the discharge valve is installed on the second pipeline.

[0007] Further, the water collecting device comprises a water collecting tank, and a blowdown valve is arranged at the bottom of the water collecting tank.

[0008] Further, a water level gauge is connected to the water collecting tank.

[0009] Further, a valve is installed on the condensate pipe near the water collecting tank.

[0010] Further, the top of the water collecting tank is connected to a pressure transmitter through a pressure tapping pipe.

[0011] Further, the pressure tapping pipe is connected to the water collecting tank at a distance of 30 mm from the top of the tank through an external thread.

[0012] The application also provides a method for using the device for detecting and removing condensate of a furnace pressure detection device of a post-treatment line heating furnace, which comprises the following steps: S1, during the start-up or baking of the heating furnace, the valve is closed, the discharge valve is opened, the gas in the furnace with a high moisture content is discharged, and after the baking is completed, the discharge valve is closed and the valve is opened; S2, in the normal working state, the valve is opened, the gas in the furnace flows through the condensate pipe through the valve, and because there is a certain temperature difference between the gas in the furnace and the external environment, the moisture in the gas condenses into condensate when the gas flows through the end of the condensate pipe and flows into the water collecting tank; according to the water level of the water level gauge, the drain valve is opened to discharge all the condensate in the water collecting tank, and then the drain valve is closed; S3, the pressure transmitter detects the relatively dry gas in the furnace through the pressure tapping pipe; S4, the clear valve is closed in normal times, and when impurities or blockages are found in the pipeline, the clear valve is opened and the pipeline is cleared using a long rod tool.

[0013] Compared with the prior art, the application has the following advantages: 1. The device for detecting and removing condensate of a furnace pressure detection device of a post-treatment line heating furnace and the method for using the same improve the stability of the furnace pressure detection of the heating furnace, reduce the degraded products, and improve the stable operation rate of the heating furnace; have good interchangeability, have great market promotion value; solve the problem of condensate in the detection pipeline, greatly reduce the damage rate of detection instruments, and improve the economic value of the operation of the unit.

[0014] 2. The device for detecting and removing condensate of a furnace pressure detection device of a post-treatment line heating furnace and the method for using the same, in the normal working state, the valve is opened, the gas in the furnace flows through the condensate pipe through the valve, and because there is a certain temperature difference between the gas in the furnace and the external environment, the moisture in the gas condenses into condensate when the gas flows through the end of the condensate pipe and flows into the water collecting tank, and the pressure transmitter detects the relatively dry gas in the furnace through the pressure tapping pipe, which can minimize the influence of the condensate in the detection pipeline on the accuracy of the furnace pressure detection.

[0015] 3. The post-treatment line heating furnace pressure detection and condensate removal device and its use method provided by the application can discharge the furnace gas with high moisture content by closing the through valve and opening the discharge valve during the start-up or drying of the heating furnace.

[0016] 4. The post-treatment line heating furnace pressure detection and condensate removal device and its use method provided by the application can open the clear valve to clear the pipeline by using a long rod tool when impurities or blockage are found in the pipeline.

[0017] Based on the above reasons, the application can be widely promoted in the field of condensate removal. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0019] Figure 1 It is a structural schematic diagram of the post-treatment line heating furnace pressure detection and condensate removal device of the application.

[0020] Figure 2 It is a schematic diagram of the condensate removal device installed between the heating furnace pressure detection transmitter and the furnace pressure detection pipe.

[0021] In the figure: 1, through-wall pipe; 2, through valve; 3, discharge valve; 4, clear valve; 5, condensate pipe; 6, water collecting tank; 7, water level meter; 8, blowdown valve; 9, pressure tapping pipe; 10, pressure transmitter. DETAILED DESCRIPTION

[0022] It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other without conflict. The application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the application more clear, the technical solutions in the embodiments of the application will be described clearly and completely below in combination with the drawings of the embodiments of the application. Obviously, the described embodiments are only some of the embodiments of the application, but not all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the application and its application or use. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the application.

[0024] It is to be understood that the terms so far as the word "comprise" and / or "comprising", or "include" and / or "including" when used in this specification is / are used to express the inclusion of one or more steps, operations, elements, and / or components, but these articles do not exclude the other steps, operations, elements, and / or components.

[0025] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in the examples are not intended to limit the scope of the application unless specifically so stated. It is also to be understood that the dimensions of the various parts shown in the drawings are not necessarily to scale, and that for purposes of convenience and clarity in understanding the present application, common terms have been used for like components throughout. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail, but are to be considered as part of the description. In all examples shown and discussed herein, any specific values are to be interpreted as merely exemplary and not as a limitation on the scope of the exemplary embodiments. Thus, other examples of the exemplary embodiments can have different values. It is to be noted that like reference numerals and letters refer to like items in the drawings, and once an item is defined in one drawing, it need not be discussed further in subsequent drawings.

[0026] In the description of the present application, it is to be understood that the orientation or positional relationships indicated by orientation words such as "front, back, upper, lower, left, right", "transverse, vertical, perpendicular, horizontal", and "top, bottom" are generally based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Without the opposite indication, these orientation words do not indicate and imply that the devices or elements referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application: the orientation words "inner, outer" refer to the inner and outer relative to the outline of each component itself.

[0027] For the purposes of the description, relative terms such as "on", "above", "upper surface", "top", and the like can be used to describe a spatial or positional relationship between one device or feature to another device or feature as illustrated in the figures. It is to be understood that the relative terms are intended to encompass different orientations of the devices in their operation or use in different embodiments. For example, if a device illustrated in the figures is inverted, then a device described as "above" or "on" other devices or structures can be positioned "below" or "on" the other devices or structures. Accordingly, the exemplary term "above" can encompass both an orientation of above and below. The devices can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0028] In addition, it should be noted that the use of "first", "second", and the like words to describe various components is merely intended to differentiate the various components from one another, and does not imply special order or significance, unless otherwise stated, and therefore should not be construed as limiting the scope of protection of the present application.

[0029] The present application provides a post-processing line heating furnace pressure detection condensate removal device, relates to a galvanizing unit heating furnace system supporting instrument detection equipment. Figure 1 The present application provides a post-processing line heating furnace pressure detection condensate removal device, relates to a galvanizing unit heating furnace system supporting instrument detection equipment. Figure 2 The present application provides a post-processing line heating furnace pressure detection condensate removal device, relates to a galvanizing unit heating furnace system supporting instrument detection equipment.

[0030] The present application provides a post-processing line heating furnace pressure detection condensate removal device, relates to a galvanizing unit heating furnace system supporting instrument detection equipment. The present application provides a post-processing line heating furnace pressure detection condensate removal device, relates to a galvanizing unit heating furnace system supporting instrument detection equipment. The present application provides a post-processing line heating furnace pressure detection condensate removal device, relates to a galvanizing unit heating furnace system supporting instrument detection equipment. The present application provides a post-processing line heating furnace pressure detection condensate removal device, relates to a galvanizing unit heating furnace system supporting instrument detection equipment.

[0031] The present application provides a post-processing line heating furnace pressure detection condensate removal device, relates to a galvanizing unit heating furnace system supporting instrument detection equipment. S1, the drain valve 3 is opened when the on valve 2 is closed, the drain valve 3 is mainly discharged during the heating furnace start-up or the oven period, the oven is discharged after the drain valve 3 is closed when the on valve 2 is opened.

[0032] S2, the clear valve 4 is closed normally, if the pipeline is found to have impurities or blockage, open the clear valve 4, use long rod tool to clear the pipeline.

[0033] S3, in the normal working state, the on valve 2 is opened, the furnace gas flows through the condensate pipe 5, because there is a certain temperature difference between the furnace gas and the external environment, the water in the gas is condensed into condensate water when the furnace gas flows through the end of the condensate pipe 5, according to the water level of the water level gauge 7, the drain valve 8 is opened (the drain valve 8 is always closed under normal circumstances to ensure effective detection of the furnace gas pressure), the condensate water in the water tank 6 is discharged, and then the drain valve 8 is closed.

[0034] S4, the pressure pipe 9 is connected with the water tank 6 at a distance of 30mm from the top of the tank through the external thread, and the pressure transmitter 10 detects the relatively dry furnace gas through the pressure pipe 9.

[0035] The application has complete interchangeability, and can be quickly replaced and popularized in other heating furnace pressure detection instruments.

[0036] The application can maximize the influence of the condensate water in the detection pipeline on the accuracy of the furnace pressure detection.

[0037] The application can improve the stability of the heating furnace pressure detection, reduce the production of degraded products, and improve the safe operation of the heating furnace.

[0038] The application is applied to a galvanizing unit of a certain cold rolling plant, is convenient to operate, can realize uninterrupted collection and periodic discharge of the condensate water in front of the furnace pressure detection device, reduces the risk of inaccurate furnace pressure detection, reduces the damage of spare parts, reduces the procurement cost, improves the safety of the production process, provides a reference for the accuracy of the furnace pressure detection of similar heating furnaces, and has great popularization and application value.

[0039] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the application, and not to limit them; although the application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the application.

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.

7. A method of using the furnace pressure detection and condensate removal device for a post-processing line heating furnace as described in any one of claims 1-6, characterized in that, Includes the following steps: S1. During the start-up or baking of the heating furnace, the connecting valve (2) is closed and the discharge valve (3) is opened to discharge the furnace gas with high moisture content. After the baking is completed, the discharge valve (3) is closed and the connecting valve (2) is opened. S2. Under normal working conditions, the open valve (2) is open, and the gas inside the furnace flows through the open valve (2) and through the condensate pipe (5). 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 (5), the water in the gas condenses into condensate and flows into the water collection tank (6). According to the water level of the water level gauge (7), if the water level does not exceed the highest liquid level of the water level gauge (7), the drain valve (8) is opened to drain all the condensate in the water collection tank (6), and then the drain valve (8) is closed. S3, The pressure transmitter (10) detects the relatively dry gas inside the furnace through the pressure tapping pipe (9); S4. The cleaning valve (4) is normally closed. When impurities or blockages are found in the pipeline, the cleaning valve (4) is opened and the pipeline is cleaned using a long rod tool.

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