Wide-channel plate type low-temperature economizer drainage device

Abstract

The utility model discloses a wide-channel plate type low-temperature economizer drainage device, and relates to the technical field of economizers. Comprising a water collecting tank arranged at the bottom of the economizer, the top face of the water collecting tank is fixedly connected and communicated with a plurality of water inlet assemblies, each water inlet assembly corresponds to and is communicated with one heat exchange plate, the center of the bottom of the water collecting tank is fixedly connected and communicated with a drainage pipe, and a first control valve is installed on the drainage pipe. The water collecting tank can be communicated with the bottoms of the heat exchange plates through the water inlet assembly, when the coal economizer is shut down, water in all the heat exchange plates installed in the coal economizer can be discharged by opening the first control valve, the water in heat exchange plate cavities can be discharged when the coal economizer is shut down, and the heat exchange plate cavities are prevented from being blocked. Water stored in the heat exchange plate cavity is effectively prevented from corroding the heat exchange plate cavity, and the service life of the economizer is effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of economizers, in particular to a drainage device for a wide-channel plate-type low-temperature economizer. Background Art

[0002] At present, most of the heat exchange plates of the plate-type low-temperature economizer are vertically installed. The water to be heated enters from above, flows through several processes in the heat exchange plate cavity and then flows out from above, realizing the upward inlet and upward outlet of the water to be heated. During shutdown, since the current economizers do not have drainage ports, there is water stored in the heat exchange plate cavity, which is prone to oxygen corrosion and causes damage to the heat exchange plate cavity. Therefore, there is an urgent need for a drainage device for a wide-channel plate-type low-temperature economizer, which can drain the water in the heat exchange plate cavity during the shutdown of the economizer, effectively avoid the water stored in the heat exchange plate cavity from corroding the heat exchange plate cavity, and effectively extend the service life of the economizer. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a drainage device for a wide-channel plate-type low-temperature economizer to solve the problems existing in the above-mentioned prior art.

[0004] To achieve the above purpose, the utility model provides the following solution: The utility model provides a drainage device for a wide-channel plate-type low-temperature economizer, which includes a water collection tank arranged at the bottom of the economizer. The top surface of the water collection tank is fixedly connected and communicated with a plurality of water inlet components. Each water inlet component is arranged corresponding to and communicated with a heat exchange plate. The center of the bottom of the water collection tank is fixedly connected and communicated with a drain pipe, and a first control valve is installed on the drain pipe.

[0005] Preferably, the water inlet component includes a plurality of water inlet pipes, and the water inlet pipes are fixedly connected and communicated with the bottom of the heat exchange plate.

[0006] Preferably, a second control valve is installed in the water inlet pipe.

[0007] Preferably, the water collection tank is arranged in an inverted trapezoid shape.

[0008] Preferably, an inclined surface is provided at the bottom of the water collection tank.

[0009] Preferably, the high end of the inclined surface is arranged on the inner wall of the water collection tank.

[0010] Preferably, the low end of the inclined surface is flush with the end of the drain pipe extending into the water collection tank.

[0011] The utility model discloses the following technical effects:

[0012] The water collecting tank of the present utility model can be connected to the bottom of the heat exchange plate through the water inlet assembly. When the economizer is shut down, by opening the first control valve, the water in all the heat exchange plates installed in the economizer can be discharged, so that during the shutdown of the economizer, the water in the heat exchange plate cavity can be drained, effectively avoiding the corrosion of the heat exchange plate cavity by the stored water inside, and effectively extending the service life of the economizer. Brief Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0014] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 It is a schematic diagram of the structure of the water collecting tank of the present utility model;

[0016] Figure 3 It is a schematic cross-sectional view of the heat exchange plate of the present utility model;

[0017] Figure 4 It is a schematic front cross-sectional view of the water collecting tank of the present utility model;

[0018] Figure 5 It is a schematic side cross-sectional view of the water collecting tank of the present utility model;

[0019] Figure 6 It is a schematic diagram of the structure of Embodiment 2 of the present utility model;

[0020] Figure 7 It is a schematic top view of Embodiment 4 of the present utility model;

[0021] Figure 8 It is a schematic front view of Embodiment 4 of the present utility model;

[0022] Figure 9 It is a schematic side cross-sectional view of the water collecting tank of Embodiment 4 of the present utility model;

[0023] Among them, 1. Water collecting tank; 2. Water inlet pipe; 3. Drain pipe; 4. First control valve; 5. Inclined plane; 6. Heat exchange plate. Detailed Embodiment

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Embodiment 1

[0027] Refer to Figures 1 - 5 , the present invention discloses a drainage device for a wide-channel plate-type low-temperature economizer, which includes a water collection tank 1 arranged at the bottom of the economizer. The top surface of the water collection tank 1 is fixedly connected and communicated with a plurality of water inlet components. Each water inlet component is arranged corresponding to and communicated with a heat exchange plate 6. The center of the bottom of the water collection tank 1 is fixedly connected and communicated with a drain pipe 3, and a first control valve 4 is installed on the drain pipe 3.

[0028] The water collection tank 1 of the present invention can be communicated with the bottom of the heat exchange plate 6 through the water inlet component. When the economizer is shut down, by opening the first control valve 4, the water in all the heat exchange plates 6 installed in the economizer can be discharged, so that the water in the heat exchange plate cavity can be discharged during the shutdown of the economizer, effectively avoiding the corrosion of the heat exchange plate cavity by the stored water in the heat exchange plate cavity and effectively extending the service life of the economizer.

[0029] The present invention can communicate all the heat exchange plates 6 installed on the economizer through the water collection tank 1. During the drainage process, the water in all the heat exchange plates 6 flows into the water collection tank 1 and can be drained through a single drain pipe 3, effectively avoiding draining water from each heat exchange plate 6 in sequence and effectively improving the drainage efficiency.

[0030] Further optimized solution, the water inlet component includes a plurality of water inlet pipes 2, and the water inlet pipes 2 are fixedly connected and communicated with the bottom of the heat exchange plate 6. So that each heat exchange plate cavity at the bottom of each heat exchange plate 6 is respectively communicated with a water inlet pipe 2.

[0031] Further optimized solution, a second control valve is installed in the water inlet pipe 2. Through the second control valve, during the operation of the economizer, the water in the heat exchange plate 6 will not flow into the water collection tank 1, extending the service life of the water collection tank 1.

[0032] Further optimized solution, the water collection tank 1 is arranged in an inverted trapezoid shape. Effectively avoiding the existence of stored water in the water collection tank 1.

[0033] For a further optimized solution, an inclined surface 5 is provided at the bottom of the water collecting tank 1.

[0034] For a further optimized solution, the higher end of the inclined surface 5 is provided on the inner wall of the water collecting tank 1.

[0035] For a further optimized solution, the lower end of the inclined surface 5 is flush with the end of the drain pipe 3 extending into the water collecting tank 1.

[0036] It can enable the water in the water collecting tank 1 to effectively drain out of the water collecting tank 1 through the inclined surface 5 and the drain pipe 3.

[0037] Working process: When the economizer stops operating, open all the second control valves, so that the water in the heat exchange plate 6 flows into the water collecting tank 1 through the water inlet pipe 2. Connect the drainage pipe to the drain pipe 3, and open the first control valve 4, so that the water in the water collecting tank 1 can flow along the inclined surface into the drain pipe 3 and enter the drainage pipe through the drain pipe 3, then the water in the heat exchange plate 6 can be drained out.

[0038] Embodiment 2

[0039] Refer to Figure 6 In this embodiment, the difference from Embodiment 1 is that in order to reduce the manufacturing cost and simplify the structure, the heat exchange plate cavity in the middle of the bottom of each heat exchange plate 6 is communicated with the water inlet pipe 2. Through the water inlet pipe 2, the water in the heat exchange plate 6 flows into the water collecting tank 1 through the water inlet pipe 2 and is drained through the drain pipe 3.

[0040] Embodiment 3

[0041] The difference between this embodiment and Embodiment 2 is that in order to avoid the situation that the water in the heat exchange plate 6 cannot be drained due to the damage of the second control valve, no second control valve is installed in the water inlet pipe 2. During the working process of the economizer, there is always water stored in the water collecting tank 1. In order to extend the service life of the water collecting tank 1, when manufacturing the water collecting tank 1, an anti-corrosion coating is applied on the inner wall of the water collecting tank 1.

[0042] Embodiment 4

[0043] Refer to Figures 7 - 9 In this embodiment, the difference from Embodiment 2 is that the water collecting tank 1 is in a semi-cylindrical shape, the top surface of the water collecting tank 1 is a plane, the lower part of the water collecting tank 1 is a semi-circle, several water inlet pipes 2 are arranged on the top surface of the water collecting tank 1, and the drain pipe 3 is arranged in the middle of the bottom surface of the water collecting tank 1.

[0044] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model, 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 should not be construed as a limitation to the present utility model.

[0045] The embodiments described above are only descriptions of the preferred embodiments of the present utility model, and do not limit the scope of the present utility model. Without departing from the design spirit of the present utility model, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present utility model shall fall within the protection scope determined by the claims of the present utility model.

Claims

1. A wide channel plate type low temperature economizer drainage device, characterized in that: It comprises a water collecting box (1) arranged at the bottom of the economizer, the top surface of the water collecting box (1) is fixedly connected to and communicated with a plurality of water inlet components, each of the water inlet components is arranged in a one-to-one correspondence with a heat exchange plate (6) and is communicated with, the bottom center of the water collecting box (1) is fixedly connected to and communicated with a drain pipe (3), and a first control valve (4) is installed on the drain pipe (3).

2. The wide channel plate type low temperature economizer drainage device according to claim 1, characterized in that: The water inlet assembly comprises a plurality of water inlet pipes (2), and the water inlet pipes (2) are fixedly connected to and communicated with the bottom of the heat exchange plate (6).

3. The wide channel plate type low temperature economizer drainage device according to claim 2, characterized in that: A second control valve is installed in the water inlet pipe (2).

4. The wide channel plate type low temperature economizer drainage device according to claim 1, characterized in that: The water collecting tank (1) is arranged in an inverted trapezoidal shape.

5. The wide channel plate type low temperature economizer drainage device according to claim 1, characterized in that: The bottom of the water collecting box (1) is provided with an inclined surface (5).

6. The wide channel plate type low temperature economizer drainage device according to claim 5, characterized in that: The higher end of the inclined surface (5) is opened on the inner wall of the water collecting tank (1).

7. The wide channel plate type low temperature economizer drainage device according to claim 5, characterized in that: The lower end of the inclined surface (5) is flush with the end of the drainage pipe (3) extending into the water collecting tank (1).

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