Condensate water collecting device, smoke exhaust pipe and heat accumulating type combustion industrial furnace
By installing an annular condensate collection device in the exhaust pipe of the thermally regenerative combustion industrial furnace, the corrosion problem caused by the flow of condensate is solved, the effective collection and discharge of condensate is achieved, and the equipment is protected.
Patent Information
- Application Number
- CN202421007800.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-10
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-05-10
AI Technical Summary
In the smoke exhaust pipes of existing thermal combustion industrial furnaces, the condensate condenses into small water droplets when the temperature changes, flowing along the inner wall of the smoke exhaust pipe, causing corrosion and damage, especially in winter.
A ring-shaped condensate water collection device is designed, and a cooled condensate tank is installed on the inner wall. The collected condensate water is discharged under a controlled state through the opening of the liquid collection tank to prevent the condensate water from flowing and contamination. The device is connected to the smoke exhaust pipe to form an integral smoke passage.
Effectively prevent condensate water from flowing along the inner wall of the smoke exhaust pipe, avoid corrosion and damage, protect the smoke exhaust pipe and fan blades, and extend the service life of the equipment.
Smart Images
Figure CN222438561U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heating industrial furnaces, and in particular to a condensate collecting device for collecting condensate, a smoke exhaust pipe and a heat storage combustion industrial furnace with the condensate collecting device. Background Art
[0002] From the perspective of strict environmental protection requirements and heating efficiency, more and more industrial furnaces that heat workpieces use regenerative combustion, that is, regenerative combustion industrial furnaces.
[0003] The regenerative combustion industrial furnace can heat the air at room temperature in a short time. After the heated high-temperature air enters the furnace, it draws in the flue gas in the surrounding furnace to form a thin oxygen-poor high-temperature airflow with an oxygen content much lower than 21%. At the same time, fuel is injected near the thin high-temperature air, and the fuel is burned in an oxygen-poor (2% to 20%) state. At the same time, the hot flue gas after combustion in the furnace is emptied through another regenerative burner, and the sensible heat of the high-temperature flue gas is stored in another regenerative burner. The two regenerative burners are in an alternating working state of heat storage and heat release, thereby achieving energy saving.
[0004] The flue gas generated by the combustion of the regenerative combustion furnace is usually extracted from the heat storage body in the exhaust pipe (smoke pipe) by means of a smoke exhaust fan, and then the smoke exhaust fan is discharged to the centralized flue or atmosphere through the exhaust pipe; because the flue gas temperature is usually high, and the flue gas temperature changes with the ambient temperature and the season, it is easy to cause the water vapor in the flue gas to condense into small water droplets, which adhere to the inner wall of the exhaust pipe, and the small water droplets gather to form larger water droplets. Under the action of gravity, the water droplets flow down along the inner wall of the exhaust pipe into the fan, affecting the dynamic balance of the smoke exhaust fan; more importantly, because the fuel combustion of the industrial furnace will produce more nitrides and sulfides (fuel usually contains sulfur), the nitrides and sulfides in the flue gas will dissolve in water to form nitrous acid and hyposulfuric acid and other highly corrosive acidic substances. The condensed water containing these acidic substances will flow into the fan and corrode the fan body and damage the fan blades; it will also corrode the inner wall of the flue pipe, and rust will form over a long period of time, resulting in rust holes or rust cracks. This problem has long plagued users, especially in the winter in the north. Summary of the invention
[0005] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is: how to provide a condensate collection device to collect condensate so as to prevent the water vapor in the flue gas from condensing into small water droplets and flowing downward along the inner wall of the smoke exhaust pipe under the action of gravity to the fan, causing corrosion or damage; the second purpose of the present invention is to provide a smoke exhaust pipe of a heat storage type combustion industrial furnace with a condensate collection device; the third purpose is to provide a heat storage type combustion industrial furnace with a condensate collection device.
[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:
[0007] A condensate collection device includes a collection device body; the characteristic is that the collection device body is annular, the surface is a shell, a first connection end and a second connection end are respectively provided at both ends of the collection device body for connection, and the shell has a through-type inner cavity; a condensate collection tank is provided on the inner wall of the shell, the condensate collection tank is provided along the circumference of the inner wall of the shell, a collection tank opening is provided at the lower end of the condensate collection tank, and the collected liquid is discharged outward through the collection tank opening. In this way, the condensate collection device of the utility model has an annular structure, and a condensate collection tank is provided on its inner wall to collect condensate formed by temperature changes and prevent condensate from flowing downward; the condensate collection device is also provided with a collection tank opening, which is opened when needed to discharge the collected condensate outward under a controlled state to prevent condensate from contaminating the inner wall of the equipment.
[0008] Furthermore, a tank support is arranged on the inner wall of the inner cavity, the tank support protrudes outward, and a condensation collecting tank is formed between the tank support and the inner wall of the inner cavity. In this way, the condensation collecting tank is formed by the tank support inclined outward, which facilitates the arrangement of the condensation collecting tank.
[0009] Furthermore, the tank support is formed by connecting the lower inclined section and the upper straight section. In this way, the straight section transitioning from the inclined section is closed to obtain the minimum aerodynamic resistance, and the minimum resistance is obtained, which minimizes the resistance to the flow of gas (one-way or two-way) therein.
[0010] Furthermore, the distance between the straight section and the inner wall of the inner cavity is between 20-50 mm. Such a distance setting can meet the needs of collecting condensed water and preventing condensed water from flowing downward, and basically does not hinder the flow of gas therein, and the resistance to gas flow is minimal.
[0011] Furthermore, the condensate collecting tank is an integral annular groove structure arranged along the circumference of the inner wall of the shell, or a plurality of grooves are arranged separately along the circumference, and each groove is connected or not connected to each other.
[0012] Furthermore, the opening of the liquid collecting tank penetrates the shell, so that the liquid directly falls through the opening of the liquid collecting tank and passes through the shell, and the collected liquid is directly discharged out of the shell.
[0013] A smoke exhaust pipe of a regenerative combustion industrial furnace includes a smoke exhaust pipeline, characterized in that the hollow smoke exhaust pipeline is connected to the aforementioned collecting device body through a first connecting end and / or a second connecting end at the end of the collecting device body. In this way, the collecting device body is arranged in the smoke exhaust pipe of the regenerative combustion industrial furnace, and the condensation collecting tank formed on the inner wall can collect condensed water formed by temperature changes to prevent the condensed water from flowing downward.
[0014] Furthermore, the smoke exhaust pipe comprises an upper smoke exhaust pipe section and a lower smoke exhaust pipe section, which are respectively connected to the collecting device body through a first connection end at the upper part of the collecting device body and a second connection end at the lower part, and the cavities inside the two are connected to form a smoke channel. The utility model adopts two sections of smoke exhaust pipes respectively connected to the two ends of the collecting device body to form a smoke exhaust pipe with a condensate collecting tank.
[0015] Furthermore, the shapes of the smoke exhaust pipe and the inner cavity of the collecting device body match each other, which facilitates the arrangement of the smoke exhaust pipe and the inner cavity of the collecting device body and reduces the resistance of gas passing.
[0016] A regenerative combustion industrial furnace includes a smoke exhaust pipe, characterized in that the smoke exhaust pipe is as described above. The condensate collection device and the smoke exhaust pipe of the utility model are used in the regenerative combustion industrial furnace, and the condensate collection tank formed on the inner wall of the smoke exhaust pipe of the regenerative combustion industrial furnace collects condensate formed by temperature changes, prevents condensate from flowing downward, and protects the smoke exhaust pipe and fan blades and other components.
[0017] In summary, the beneficial effects of the present invention are:
[0018] 1. The condensate collecting device of the utility model has an annular structure, and a condensate collecting tank is provided on its inner wall to collect condensate formed by temperature change and prevent the condensate from flowing downward.
[0019] 2. The condensate collection device of the utility model is also provided with a liquid collecting tank opening, which is opened when needed to release the collected condensate outward under a controlled state to prevent the condensate from contaminating the inner wall of the equipment.
[0020] 3. After the condensate collection device of the utility model is installed in conjunction with the smoke exhaust pipe, a condensate collecting tank is provided on its inner wall to collect condensate formed due to temperature changes, to prevent the condensate from flowing downward, and to prevent the condensate from contaminating or corroding the inner wall of the smoke exhaust pipe.
[0021] 4. The heat storage combustion industrial furnace of the utility model is equipped with a condensate collection device in the smoke exhaust pipe. The condensate collection tank on the inner wall of the condensate collection device can collect condensate formed by temperature changes, prevent the condensate from flowing downward, prevent the condensate from polluting or rusting the inner wall of the smoke exhaust pipe, and prevent the condensate from damaging the fan blades. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 This is a schematic diagram of the structure of the condensate collection device of the utility model (section view);
[0023] Figure 2 This is a schematic diagram of the exhaust pipe structure of a regenerative combustion industrial furnace with a condensed water collection device according to the utility model;
[0024] Figure 3 yes Figure 2 Top view of the .
[0025] 1—collection device body, 2—shell, 3—first connection end, 4—second connection end, 5—inner cavity, 6—condensation collecting tank, 7—tank support, 71—inclined section, 72—straight section, 8—collecting tank opening, 9—smoke exhaust pipe, 10—upper section of smoke exhaust pipe, 11—lower section of smoke exhaust pipe, 12—smoke channel. DETAILED DESCRIPTION
[0026] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. The components of the embodiment of the utility model generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents the selected embodiment of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.
[0027] It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In the description of the utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invention product is usually placed when used, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In addition, the terms "horizontal", "vertical", etc. do not mean that the components are absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted. In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0028] Example:
[0029] The utility model provides a condensed water collecting device, such as Figure 1As shown, it includes a collecting device body 1, which is made of refractory materials to meet the needs of high-temperature combustion in industrial furnaces; the collecting device body 1 is annular, such as a circular ring, an ellipse, or a symmetrical square shape, etc., and the surface is a shell 2. The first connecting end 3 and the second connecting end 4 for connecting are respectively arranged at both ends of the collecting device body 1. When assembled, they are connected to the exhaust pipe of the matching industrial furnace or the corresponding parts of the industrial furnace through the first connecting end 3 and the second connecting end 4; the first connecting end 3 and the second connecting end 4 are usually flange structures, which are connected by bolts, gaskets, nuts, etc., or a connection structure in which one end adopts a flange structure and the other end adopts a clamping or welding structure; the inner cavity 5 is a through-type, and a cavity is formed from the first connecting end 3 to the second connecting end 4. On the inner wall of the shell 2, a condensate collecting tank 6 is arranged, which is arranged along the circumference of the inner wall of the shell 2, and can be an integral groove structure in an annular shape, or a plurality of grooves arranged separately, and each groove is connected or not connected to each other. The condensation liquid collecting tank 6 shown in the figure is a specific structure, in which a tank support 7 is arranged on the inner wall of the inner cavity 5, and the tank support 7 protrudes outward, and a condensation liquid collecting tank 6 is formed between the tank support 7 and the inner wall of the inner cavity 5. The tank support 7 shown in the figure is composed of a lower inclined section 71 and an upper straight section 72 connected. The utility model adopts a method of closing an inclined section 71 and a straight section 72 to establish a condensation liquid collecting tank 6 with a liquid collecting function, which is an optimal solution. The minimum aerodynamic resistance is obtained by closing the inclined section 71 upward to the straight section 72, and the minimum resistance is obtained, and the resistance to the flow of gas (one-way or two-way) therein is minimized; the distance between the straight section 72 and the inner wall of the inner cavity 5 is between 20-50mm. A liquid collecting tank opening 8 is arranged at the lower end of the condensation liquid collecting tank 6, and the liquid collected by the liquid collecting tank opening 8 is discharged outward; the liquid collecting tank opening 8 shown in the figure passes through the shell 2, and can cooperate with the opening plugging device (not shown in the figure). When needed, it can be opened under controlled conditions to discharge the liquid (condensed water) collected in the condensate collecting tank 6 through the collecting tank opening 8, and the discharge can be centralized and controlled to prevent the condensed water from contaminating the inner wall of the equipment.
[0030] The smoke exhaust pipe of the heat storage combustion industrial furnace of the utility model comprises a smoke exhaust pipe 9. The hollow smoke exhaust pipe 9 is connected to the collecting device body 1 and maintains good sealing and ventilation performance; the smoke exhaust pipe 9 is connected through the first connecting end 3 and / or the second connecting end 4 at the end of the collecting device body 1. If the first connecting end 3 or the second connecting end 4 is a flange, a flange connection structure is adopted; the two can also be welded to form a smoke exhaust pipe that meets the combustion requirements of the heat storage combustion industrial furnace through welding connection.
[0031] The shape of the hollow smoke exhaust pipe 9 and the internal cavity of the collecting device body 1 are consistent with each other and are basically the same. After assembly, an internal smoke passage with a uniform and evenly transitioned inner cavity is formed; a specific connection structure shown in the figure is to set two sections of smoke exhaust pipes 9, namely an upper section 10 of the smoke exhaust pipe and a lower section 11 of the smoke exhaust pipe. The upper section 10 of the smoke exhaust pipe and the lower section 11 of the smoke exhaust pipe are respectively connected to the collecting device body 1 through the first connecting end 3 at the upper part of the collecting device body 1 and the second connecting end 4 at the lower part, and are respectively connected to the upper and lower ends of the collecting device body 1, and the cavities inside the two are connected to form a smoke passage 12 for gas to pass through in one direction or two directions.
[0032] The utility model heat storage combustion industrial furnace, see Figure 2 , 3 , including a smoke exhaust pipe, the smoke exhaust pipe includes a smoke exhaust pipe 9, the hollow smoke exhaust pipe 9 is connected to the collection device body 1, the cavities inside the two are connected, and a smoke channel 12 for gas to pass through in one direction or two directions is formed. A specific connection structure shown in the figure is to set two sections of smoke exhaust pipes 9, namely, an upper section 10 of the smoke exhaust pipe and a lower section 11 of the smoke exhaust pipe. The upper section 10 of the smoke exhaust pipe and the lower section 11 of the smoke exhaust pipe are connected to the collection device body 1 through the first connection end 3 at the upper part of the collection device body 1 and the second connection end 4 at the lower part, respectively, and are connected to the upper and lower ends of the collection device body 1.
[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described by referring to the preferred embodiments of the utility model, those skilled in the art should understand that various changes can be made in form and details without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims
1. A condensate collection device, comprising a collection device body (1); characterized in that: The collecting device body (1) is annular, with a shell (2) on the surface. A first connecting end (3) and a second connecting end (4) for connecting are respectively arranged at both ends of the collecting device body (1), and a through-type inner cavity (5) is arranged in the shell (2). A condensation liquid collecting groove (6) is arranged on the inner wall of the shell (2), and the condensation liquid collecting groove (6) is arranged along the circumference of the inner wall of the shell (2). A liquid collecting groove opening (8) is arranged at the lower end of the condensation liquid collecting groove (6), and the collected liquid is discharged outward through the liquid collecting groove opening (8).
2. The condensate collection device according to claim 1, characterized in that: A tank support (7) is arranged on the inner wall of the inner cavity (5); the tank support (7) protrudes outwards, and the condensate collecting tank (6) is formed between the tank support (7) and the inner wall of the inner cavity (5).
3. The condensate collection device according to claim 2, characterized in that: The trough support body (7) is composed of a lower inclined section (71) and an upper straight section (72) connected together.
4. The condensate collection device according to claim 3, characterized in that: The distance between the straight section (72) and the inner wall surface of the inner cavity (5) is between 20 and 50 mm.
5. The condensate collection device according to any one of claims 1 to 4, characterized in that: The condensate collecting tank (6) is an integral annular groove structure arranged along the circumference of the inner wall of the shell (2), or is a plurality of grooves arranged separately in the circumference, and each groove is connected or not connected to each other.
6. The condensate collection device according to any one of claims 1 to 4, characterized in that: The liquid collecting tank opening (8) passes through the shell (2).
7. A smoke exhaust pipe for a regenerative combustion industrial furnace, comprising a smoke exhaust pipe (9), characterized in that: The hollow smoke exhaust pipe (9) is connected to the collecting device body (1) according to any one of claims 1 to 6, and is connected via the first connecting end (3) and / or the second connecting end (4) at the end of the collecting device body (1).
8. The smoke exhaust pipe of the regenerative combustion industrial furnace according to claim 7, characterized in that: The smoke exhaust pipe (9) comprises an upper smoke exhaust pipe section (10) and a lower smoke exhaust pipe section (11), the upper smoke exhaust pipe section (10) and the lower smoke exhaust pipe section (11) are connected to the collection device body (1) via a first connection end (3) at the upper part and a second connection end (4) at the lower part of the collection device body (1), respectively, and the cavities inside the two are connected to form a smoke channel (12).
9. The smoke exhaust pipe of the regenerative combustion industrial furnace according to claim 7 or 8, characterized in that: The shapes of the smoke exhaust pipe (9) and the internal cavity of the collection device body (1) match each other.
10. A regenerative combustion industrial furnace, comprising a smoke exhaust pipe, characterized in that: The smoke exhaust pipe is as described in any one of claims 7 to 9.