Automatic drainage device of steam pipeline

Abstract

The utility model provides an automatic drainage device of a steam pipeline, which comprises a DN800 steam pipeline, the DN800 steam pipeline is communicated with a water inlet of a water collecting tank through a first condensate water drainage pipe, a temperature measuring point A and a temperature measuring point B are arranged in the water collecting tank, and the temperature measuring point A and the temperature measuring point B are communicated with a temperature controller; the temperature controller is used for controlling the electric switch valve, the function requirement for automatic drainage of the steam pipeline is met, economy and reliability are achieved, and leakage of pipeline steam during drainage can be reduced. The water collecting tank is installed on the horizontal drainage pipeline, the action frequency of the switch valve is reduced, steam leakage is reduced, the net-shaped grating is arranged in the water collecting tank, the blow-down valve is installed at the bottom of the water collecting tank, dirt in the water collecting tank can be cleaned regularly, and the influence of the dirt in the steam pipeline on the switch valve is reduced.

Description

Technical Field

[0001] This utility model relates to a steam conveying device, and more particularly to an automatic drainage device for a steam pipeline. Background Technology

[0002] The main purpose of steam pipeline condensate drainage is to promptly remove condensate, air, and non-condensable gases generated in the pipeline system, ensuring safe and efficient system operation while reducing energy waste. Common steam pipeline condensate drainage solutions use automatic steam traps. However, the valve plates wear down easily due to frequent operation, resulting in a short lifespan and a relatively high steam leakage rate of approximately 3% to 5%. Automatic steam traps are crucial equipment in steam pipelines; malfunctions can lead to delayed condensate drainage, affecting the safe and efficient operation of the steam pipeline. Furthermore, over long-term operation, rust and other contaminants build up inside the pipeline can easily clog the automatic steam traps. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of the prior art by providing an automatic steam trap for steam pipelines.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This invention provides an automatic condensate drain device for a steam pipeline, including a DN800 steam pipeline. The DN800 steam pipeline is connected to the inlet of a water collection tank via a first condensate drain pipe. The water collection tank is equipped with temperature measuring points A and B, which are connected to a temperature controller.

[0006] Furthermore, the outlet of the water collection tank is connected to the condensate recovery pipe through the second condensate drain pipe and the third condensate drain pipe;

[0007] The second condensate drain pipe and the third condensate drain pipe are connected in parallel.

[0008] Furthermore, a first shut-off valve is installed on the first condensate drain pipe.

[0009] Furthermore, a second shut-off valve is installed on the second condensate drain pipe; a third shut-off valve is installed on the third condensate drain pipe; and an electric switch valve is provided on one side of the third shut-off valve.

[0010] Furthermore, temperature measuring point A is installed at the upper end of the water collection tank, and temperature measuring point B is installed at the bottom end of the water collection tank.

[0011] Furthermore, a mesh grid is installed in the middle of the water collection tank, and a support rod is installed on the surface of the mesh grid.

[0012] Furthermore, a drain pipe is connected to the bottom of the water collection tank, and a drain valve is installed on the drain pipe.

[0013] The beneficial effects of this invention are as follows: The electric switching valve is controlled by a temperature controller, meeting the functional requirements of automatic steam condensation in steam pipelines. This method is economical, reliable, and reduces steam leakage during condensation. A water collection tank is installed on the horizontal condensate pipe, reducing the number of valve operations and thus minimizing steam leakage. The water collection tank is equipped with a mesh grille and a drain valve at the bottom, allowing for regular cleaning of the tank and reducing the impact of contaminants in the steam pipeline on the switching valve. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of an automatic steam trap for a steam pipeline.

[0015] Figure 2 This is a schematic diagram of the water collection tank. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0017] Please see Figure 1 An automatic condensate drain device for a steam pipeline includes a DN800 steam pipeline 1, which is connected to the inlet of a water collection tank 2 via a first condensate drain pipe 301. The water collection tank 2 is provided with temperature measuring points A and B, which are connected to a temperature controller.

[0018] The outlet of the water collection tank 2 is connected to the condensate recovery pipe 4 through the second condensate drain pipe 302 and the third condensate drain pipe 303;

[0019] The second condensate drain pipe 302 and the third condensate drain hanger 303 are connected in parallel.

[0020] A first shut-off valve 501 is installed on the first condensate drain pipe 301.

[0021] A second shut-off valve 502 is installed on the second condensate drain pipe 302; a third shut-off valve 503 is installed on the third condensate drain pipe 303; and an electric switch valve 6 is provided on one side of the third shut-off valve 503.

[0022] Please see Figure 2 Temperature measuring point A is installed at the upper end of the water collection tank 2, and temperature measuring point B is installed at the bottom end of the water collection tank 2.

[0023] A mesh grid 201 is installed in the middle of the water collection tank 2, and a support rod 202 is installed on the surface of the mesh grid 201.

[0024] The bottom of the water collection tank 2 is connected to a drain pipe 203, and a drain valve 204 is installed on the drain pipe 203.

[0025] Specifically, the water collection tank 2 is installed on the steel support platform 9, which is supported by the platform steel bracket 10.

[0026] The working principle of an automatic steam trap for steam pipelines is as follows:

[0027] After the pipeline installation and commissioning are completed, technicians will set the temperature controller control value according to the pipeline network parameters;

[0028] When the steam pipeline is operating normally, condensate will be generated in the DN800 steam pipeline 1. Under the action of steam pressure, the condensate flows into the water collection tank 2 along the first condensate drain pipe 301. At this time, the first shut-off valve 501 and the third shut-off valve 503 are opened, and the electric switch valve 6 is closed.

[0029] When the condensate level in the water collection tank 2 is low, the high-level temperature measuring point A is in the steam state, and the temperature generally exceeds the set value, such as exceeding 150℃. As the condensate accumulates, when the condensate level in the water collection tank 2 rises to the high-level temperature measuring point A, the temperature will be lower than the set value (not exceeding 100℃). At this time, the temperature controller opens the electric switch valve to automatically drain the water to the condensate recovery pipe 4.

[0030] As the liquid level in the water collection tank 2 decreases, the temperature measured at the low-level temperature measuring point B will exceed the set value. If it exceeds 150°C, it indicates that there is steam at the low-level temperature measuring point B. At this time, the temperature controller will immediately close the electric switch valve to stop the drainage and reduce steam leakage.

[0031] When the drainage pipe is under maintenance, if the electric switch valve malfunctions, the third shut-off valve 503 can be closed to allow the electric switch valve to be repaired, while the second shut-off valve 502 is opened to drain the water.

[0032] If the thermometer malfunctions or the water collection tank 2 needs cleaning, turn off the power to the distribution box, manually close the first shut-off valve 501 and the third shut-off valve 503, and open the second shut-off valve 502 to drain the water before maintenance.

[0033] During maintenance, the top cover of the water collection tank 2 can be opened to clean the debris on the mesh grille 201, and the drain valve 204 can be opened to remove the dirt inside the water collection tank 2. If the thermometer is damaged, it can also be replaced.

[0034] The embodiments described above merely illustrate the implementation of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be defined by the appended claims.

Claims

1. An automatic steam drain device for a steam pipeline, comprising a DN800 steam pipeline (1), characterized in that: The DN800 steam pipe (1) is connected to the inlet of the water collection tank (2) through the first condensate drain pipe (301). The water collection tank (2) is equipped with temperature measuring point A and temperature measuring point B, which are connected to the temperature controller.

2. The automatic steam trap for a steam pipeline according to claim 1, characterized in that: The outlet of the water collection tank (2) is connected to the condensate recovery pipe (4) through the second condensate drain pipe (302) and the third condensate drain pipe (303); The second condensate drain pipe (302) and the third condensate drain pipe (303) are connected in parallel.

3. An automatic steam trap for a steam pipeline according to claim 2, characterized in that: A first shut-off valve (501) is installed on the first condensate drain pipe (301).

4. An automatic steam trap for a steam pipeline according to claim 3, characterized in that: A second shut-off valve (502) is installed on the second condensate drain pipe (302); a third shut-off valve (503) is installed on the third condensate drain pipe (303); an electric switch valve (6) is provided on one side of the third shut-off valve (503).

5. An automatic steam trap for a steam pipeline according to claim 1, characterized in that: Temperature measuring point A is installed at the upper end of the water collection tank (2), and temperature measuring point B is installed at the bottom end of the water collection tank (2).

6. An automatic steam trap for a steam pipeline according to claim 5, characterized in that: A mesh grid (201) is installed in the middle of the water collection tank (2), and a support rod (202) is installed on the surface of the mesh grid (201).

7. An automatic steam trap for a steam pipeline according to claim 6, characterized in that: The bottom of the water collection tank (2) is connected to a drain pipe (203), and a drain valve (204) is installed on the drain pipe (203).

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