Device for efficiently discharging condensed water in steam pipeline

Abstract

The utility model discloses a device for efficiently discharging condensed water of a steam pipeline, which belongs to the technical field of pipeline condensed water discharging, solves the problem that a manual control valve cannot effectively discharge the condensed water of the pipeline, and comprises a main pipeline, a plurality of drainage points are arranged on the main pipeline according to the trend of the pipeline, and the device is arranged at the drainage points. The device comprises a water collecting short pipe and a drainage connecting pipe, the drainage connecting pipe is connected below the water collecting short pipe, a first drainage control valve and a third drainage control valve are arranged at the two ends of the horizontal section of the drainage connecting pipe respectively, a second drainage control valve is arranged on the vertical section of the drainage connecting pipe, and an automatic steam trap is arranged below the third drainage control valve. The sectional area of a drainage point is increased by arranging the discharge device, the frequency and the labor intensity of daily manual valve adjustment are reduced, the steam loss caused by unreasonable opening degree of the water escape valve is reduced, automatic drainage of the steam pipeline is realized, and safe and stable operation of the steam pipeline is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of external drainage of pipeline condensate, and particularly relates to a device for efficiently discharging condensate of a steam pipeline. Background Art

[0002] Affected by the quality of recycled steam, the steam temperature and saturated water content of each recycling process in the existing main steam pipeline are uneven. According to the design of the drain points of the existing steam pipeline, drain valves are set at the low points of the pipeline and in front of the vertical tension. Usually, the opening degree of the valve is manually controlled to drain the condensate in the pipeline. Affected by the quality of recycled steam and heat loss during long-distance transportation, the amount of condensate in the pipeline changes irregularly. Manually adjusting the opening degree of the drain valve can no longer meet the requirement of draining the condensate of the steam pipeline. If the drain valve is opened too large, steam will be wasted; if it is opened too small, the condensate cannot be effectively drained, resulting in pipeline impact accidents. Mainly, due to the ineffective drainage of condensate in the main steam pipeline, pipe collisions occur, leading to equipment accidents such as weld cracking and pipeline fracture of the pipeline, affecting the normal and safe operation of production. Content of the Utility Model

[0003] The purpose of the utility model is to provide a device for efficiently discharging condensate of a steam pipeline to solve the problem that the manual control valve cannot effectively discharge the condensate in the pipeline.

[0004] The technical solution of the utility model is: a device for efficiently discharging condensate of a steam pipeline, including a main pipeline. A plurality of drain points are arranged on the main pipeline according to the pipeline direction. The device is arranged at the drain points and includes a water collecting short pipe and a drainage connecting pipe. The drainage connecting pipe is connected below the water collecting short pipe. The two ends of the horizontal section of the drainage connecting pipe are respectively provided with a first drain control valve and a third drain control valve. A second drain control valve is arranged on the vertical section of the drainage connecting pipe. An automatic drainer is arranged below the third drain control valve.

[0005] As a further improvement of the utility model, a baffle is detachably arranged on one side of the connection between the water collecting short pipe and the main pipeline, and the baffle is located downstream of the water collecting short pipe in the air flow direction of the main pipeline.

[0006] The beneficial effects of the utility model are as follows: By using the utility model, the condensate carried and condensed during the transportation of the steam pipeline can be efficiently discharged, greatly reducing the problems of impact and water hammer of the condensate on the steam pipeline, ensuring the long-term safe operation of the pressure pipeline, and preventing the occurrence of accidents such as weld cracking and pipeline fracture of the pressure pipeline caused by water hammer.

[0007] The utility model adds a plurality of hydrophobic points on the main pipeline according to the pipeline direction. At the hydrophobic points, a connecting water collecting short pipe, a baffle, three control valves, an automatic drain trap and a drain connecting pipe are added. Compared with the original situation where the connecting pipe of the automatic drain trap is directly connected to the main pipeline with the same diameter, the utility model increases the cross-sectional area of the water discharge point by setting an external discharge device, reduces the frequency and labor intensity of daily manual valve adjustment, reduces the steam loss caused by unreasonable opening of the drain valve, realizes automatic drainage of the steam pipeline, and ensures the safe and stable operation of the steam pipeline.

[0008] The utility model is suitable for the effective external discharge of condensate water and other condensate liquids in the transportation of various energy medium pipelines, and avoids the occurrence of medium transfer quality accidents such as pipe gushing, impact, blockage, etc. caused by liquid accumulation in the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0010] In the figure: 1 - main pipeline; 2 - water collecting short pipe; 3 - drain connecting pipe; 31 - horizontal section; 32 - vertical section; 4 - first hydrophobic control valve; 5 - second hydrophobic control valve; 6 - third hydrophobic control valve; 7 - automatic drain trap; 8 - baffle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0011] The following further details the utility model in conjunction with the drawings and specific embodiments.

[0012] As Figure 1 shown, a device for efficient external discharge of condensate water in a steam pipeline includes a main pipeline 1. A plurality of hydrophobic points are provided on the main pipeline 1 according to the pipeline direction. This device is provided at the hydrophobic points and includes a water collecting short pipe 2 and a drain connecting pipe 3. The water collecting short pipe 2 is connected to the drain connecting pipe 3 below. The horizontal section 31 of the drain connecting pipe 3 is respectively provided with a first hydrophobic control valve 4 and a third hydrophobic control valve 6 at both ends, and a second hydrophobic control valve 5 is provided on the vertical section 32 of the drain connecting pipe 3. An automatic drain trap 7 is provided below the third hydrophobic control valve 6.

[0013] One side of the connection between the water collecting short pipe 2 and the main pipeline 1 is detachably provided with a baffle 8, and the baffle 8 is located downstream of the water collecting short pipe 2 in the air flow direction of the main pipeline 1.

[0014] Embodiment 1,

[0015] The diameter of the water collecting short pipe 2 is selected between 120 - 300 mm according to the diameter of the main pipeline 1. The length of the water collecting short pipe 2 is selected between 150 - 350 mm according to the drainage volume. When the diameter of the main pipeline 1 is less than 120 mm, the diameter of the water collecting short pipe 2 can be selected with reference to two-thirds of the diameter of the main pipeline 1; the baffle 8 is arranged downstream of the water collecting short pipe 2 in the air flow direction of the main pipeline 1, that is Figure 1The arrow direction in the figure is the air flow direction of the main pipeline 1. The height of the baffle 8 should not be too high and should be selected between 28 - 32 mm. The baffle 8 can improve the drainage effect, effectively facilitate the condensate to enter the water collection short pipe 2. Whether to install the baffle 8 can also be selected according to actual usage requirements. For those with low requirements for the influence on the through - diameter flow rate, the baffle 8 can be preferentially selected.

[0016] Multiple hydrophobic points are set on the main pipeline 1, and a water collection short pipe 2 is connected at the hydrophobic points, which can effectively increase the cross - sectional area of the water discharge point. The condensate can be centrally stored temporarily in the water collection short pipe 2 and the drainage connection pipe 3. When the water meets the opening condition of the automatic steam trap 7, the condensate in the main pipeline 1 is automatically discharged. At the same time, this device can ensure the weld quality, has no influence on the stress and operation of the original pipeline, and does not introduce new risk points. The T - shaped drainage connection pipe 3 can also increase the discharge path of the discharged condensate and expand the scope of use.

[0017] When the main pipeline 1 is operating normally, the condensate first accumulates in the water collection short pipe 2. The first hydrophobic control valve 4 on the drainage connection pipe 3 connected below the water collection short pipe 2 is normally open, the second hydrophobic control valve 5 is normally closed, and the third hydrophobic control valve 6 is normally open, and the automatic steam trap 7 drains automatically. The three valves, namely the first hydrophobic control valve 4, the second hydrophobic control valve 5, and the third hydrophobic control valve 6, are set for the convenience of daily maintenance. On the premise that the first hydrophobic control valve 4 can be opened and closed normally, without stopping the steam in the main pipeline 1, the first hydrophobic control valve 4 can be closed and the second hydrophobic control valve 5, the third hydrophobic control valve 6, and the drainage connection pipe 3 can be opened for maintenance, reducing the steam loss caused by the shutdown and restart of the steam supply during maintenance. When the pipeline needs to be depressurized during the normal shutdown and startup of the pipeline in daily use, opening the first hydrophobic control valve 4 and the second hydrophobic control valve 5 and closing the third hydrophobic control valve 6 can quickly reduce the pressure of the main pipeline 1, effectively protect the frequent opening and closing of the drainage connection pipe 3, and extend the service life of the drainage connection pipe 3.

[0018] This device adds a water collection short pipe 2, a baffle 8, three valves, an automatic steam trap 7, and a drainage connection pipe 3 at the hydrophobic points of the main pipeline 1, increasing the external drainage capacity of the hydrophobic points, reducing the transportation quality accidents and pipeline safety accidents caused by untimely external drainage of condensate, and is suitable for the effective external drainage and promotion of condensate and other condensate liquids in the transportation of various energy - medium pipelines.

Claims

1. A device for efficiently discharging condensate from a steam pipeline, comprising a main pipeline, characterized in that: The main pipeline (1) is provided with a plurality of drain points according to the direction of the pipeline, and the device is provided at the drain points, the device comprising a water collecting short pipe (2) and a drainage connecting pipe (3), the drainage connecting pipe (3) is connected below the water collecting short pipe (2), a first drain control valve (4) and a third drain control valve (6) are provided at both ends of a horizontal section (31) of the drainage connecting pipe (3), a second drain control valve (5) is provided on a vertical section (32) of the drainage connecting pipe (3), and an automatic drain device (7) is provided below the third drain control valve (6).

2. The device for efficiently discharging condensate from a steam pipeline according to claim 1, characterized in that: A baffle (8) is detachably provided on one side of the connection point between the water collecting short pipe (2) and the main pipeline (1), and the baffle (8) is located downstream of the water collecting short pipe (2) in the airflow direction of the main pipeline (1).

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