Steam pipe condensate drain

Abstract

The utility model provides a kind of steam pipeline condensate water discharge device, including the water collecting component of being sequentially arranged in the inside of steam pipeline several, water collecting component includes rotating shaft and the rotating vane of fixed installation on rotating shaft, wind shield, wind shield includes shell, shell is half-cone shell structure by the half-cone shell structure of the plane cutting of passing through axial, further include the drainage assembly of cooperation water collecting component setting.The utility model lets steam from shell side pass when being extruded and lead to flow rate to accelerate, along steam pipeline inner wall forms high-speed airflow, will be attached in steam pipeline inner wall small water drop blow together as big water drop, and then flow to steam pipeline bottom by drainage assembly and discharge down.It can better be attached in steam pipeline inner wall small water drop and promptly discharge, reduce its damage pipeline probability.In the embodiment, shell is half-cone shell structure, thus only occupy half of steam pipeline internal space, steam normal flow is not affected.

Description

Technical Field

[0001] This utility model relates to the field of steam transportation technology, and in particular to a steam pipeline condensate discharge device. Background Technology

[0002] Steam is one of our commonly used energy sources, and steam pipelines, as the name suggests, are pipelines that transport steam. Steam plays different roles in different fields, but most utilize its high temperature for heating. Steam pipelines are a type of heat pipe, suitable for insulation projects of various cold and hot water pipelines at high and low temperatures. Steam pipelines have good mechanical and thermal insulation properties, typically withstanding temperatures up to 120℃, and can withstand temperatures up to 180℃ through modification or combination with other insulation materials, making them suitable for insulation projects of various cold and hot water pipelines at high and low temperatures. To prevent heat loss during steam pipeline transportation, operators often wrap the outer surface of the pipeline with a thermal insulation layer. Common thermal insulation layers include, in sequence, a rock wool layer, a glass wool layer, a rubber layer, and a protective layer. The installation of thermal insulation layers helps reduce heat loss during steam transportation.

[0003] However, regardless of the insulation material, some heat loss is inevitable, resulting in a temperature difference between the inside and outside of the steam pipe. This causes the high-temperature steam inside to condense into water droplets on the cold pipe wall. If this condensate is not cleaned, its accumulation can lead to rust and corrosion of the pipe's inner wall, affecting its lifespan. Therefore, continuous drainage of condensate is necessary. Chinese invention patent application number CN2020104153891 discloses a steam pipe that solves the problem of excessive condensate affecting steam delivery in current steam pipe systems. The key technical point is a steam pipe, including a pipe body and a grooved cover plate disposed inside the pipe body. A water collection trough with gaps on both sides is formed between the grooved cover plate and the bottom side wall of the pipe body. The pipe body is also connected to a drain pipe corresponding to the grooved cover plate. The drain pipe extends into the water collection trough and forms a drain enclosure plate in the water collection trough. When the liquid level of condensate in the water collection trough exceeds the height of the upper edge of the drain enclosure plate, the excess condensate will enter the drain pipe, so that the water in the water collection trough can be discharged from the water collection trough in time, avoiding the water overflowing from the water collection trough and affecting the steam transportation in the entire steam pipe.

[0004] However, the above design only achieves better drainage from the water collection tank, but it cannot collect the condensate on the inner wall of the pipe into the water collection tank for discharge. Therefore, a better condensate drainage device is needed. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a steam pipe condensate drainage device, which solves the problem of effectively collecting and draining condensate adhering to the inner wall of steam pipes.

[0006] According to an embodiment of this utility model, a steam pipe condensate discharge device includes a plurality of water collection components sequentially arranged inside a steam pipe. Each water collection component includes a rotating shaft coaxially arranged inside the steam pipe and rotating blades and a baffle fixedly installed on the rotating shaft. The rotating blades are positioned in front of the baffle in the direction of steam flow, with their rotation surfaces perpendicular to the rotating shaft. The baffle includes a housing, which is a semi-conical shell structure formed by cutting a conical outer shell through an axial plane. A connecting plate is provided at the edge of the housing to connect and fix it to the rotating shaft. The tip of the housing faces the rotating blades, and the outer edge of the larger diameter end of the housing is close to the inner wall of the steam pipe. The device also includes a drainage component arranged in conjunction with the water collection components. The drainage component is located immediately behind the water collection components and extends through the inner wall of the steam pipe to the outside, thereby discharging the condensate.

[0007] Furthermore, the water collection assembly also includes two supports, which are fixedly connected to the inner wall of the steam pipe, and the supports are positioned at the front and rear ends of the rotating shaft. A bearing is installed in the middle of the support corresponding to the position of the rotating shaft, thereby rotatably connecting with the rotating shaft.

[0008] Furthermore, the shell surface has a convex arc-shaped structure, so that the shell surface gradually becomes parallel to the inner wall of the steam pipe along the steam flow direction.

[0009] Furthermore, the shell has an irregular arc structure in the direction perpendicular to the axis of rotation, with its middle part protruding outward, so that the distance between its two sides and the inner wall of the steam pipe is smaller than the distance between its middle part and the inner wall of the steam pipe.

[0010] Furthermore, the inner wall of the steam pipe is provided with a concave water collection groove at the position behind the corresponding wind baffle along the steam flow direction, and the drainage component is correspondingly provided at the bottom of the water collection groove.

[0011] Furthermore, the drainage assembly includes a vertically arranged drain pipe that extends through the inner wall of the steam pipe into the interior, and an electrically controlled valve is also provided at the bottom end of the drain pipe.

[0012] Furthermore, a float is installed inside the drain pipe, and a pressure switch is installed at the bottom of the drain pipe near the electronically controlled valve. The outer edge of the pressure switch is fixed to the inner wall of the drain pipe via a connecting rod, so as not to affect the flow of water. The float is located above the pressure switch and its bottom area is larger than the top area of ​​the pressure switch.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The water collection assembly of this invention includes rotating blades and a baffle simultaneously mounted on a rotating shaft. When steam passes through, the rotating shaft is driven to rotate by the spiral blades, which in turn drives the baffle to rotate. The baffle includes a housing, which is a semi-conical shell structure formed by cutting a plane along the axial direction. When steam passes through one side of the housing, it is gradually compressed, causing its flow velocity to increase. This ultimately creates a high-speed airflow near the inner wall of the steam pipe, agitating and gathering small water droplets adhering to the inner wall into larger droplets. These larger droplets, under gravity, flow downwards to the bottom of the steam pipe and are eventually discharged by the drainage assembly. This effectively removes small water droplets adhering to the inner wall of the steam pipe, reducing the probability of damage. Furthermore, in this embodiment, the housing is a semi-conical shell structure, thus occupying only half of the internal space of the steam pipe and not affecting the normal flow of steam. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the axial section of an embodiment of the present invention.

[0016] Figure 2 This is a radial cross-sectional schematic diagram of an embodiment of the present invention.

[0017] Figure 3 This is a schematic diagram of the drainage component in an embodiment of the present invention.

[0018] In the above attached figures: 1. Steam pipe; 2. Rotating shaft; 3. Support; 4. Rotating blade; 5. Shell; 6. Drainage assembly; 11. Drainage trough; 51. Connecting plate; 61. Drainage pipe; 62. Float; 63. Pressure switch; 64. Connecting rod; 65. Electrically controlled valve; 66. Protective net. Detailed Implementation

[0019] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0020] like Figure 1 As shown in the figure, this utility model embodiment proposes a steam pipe condensate discharge device, including a plurality of water collection components arranged sequentially inside the steam pipe 1 and a drainage component 6 arranged adjacent to the rear of the water collection components. It should be noted that in this embodiment, the water collection components and the drainage component 6 are only arranged for the straight section of the steam pipe 1.

[0021] The water collection assembly includes a rotating shaft 2 coaxially arranged inside a steam pipe 1, rotating blades 4 fixedly mounted on the rotating shaft 2, and a baffle. Two supports 3 are located inside the steam pipe 1 at the two ends corresponding to the rotating shaft 2. The supports 3 are fixedly connected to the inner wall of the steam pipe 1, and a bearing is installed in the middle of the support 3 corresponding to the location of the rotating shaft 2, thus rotatably connecting with the rotating shaft 2 and achieving coaxial rotation between the rotating shaft 2 and the steam pipe 1. The rotating blades 4 are positioned in front of the baffle in the direction of steam flow, and the rotation surface of the rotating blades 4 is perpendicular to the rotating shaft 2, thus driving the rotating shaft 2 to rotate with the steam flow. This, in turn, drives the baffle to rotate.

[0022] like Figure 2 Therefore, the windbreak component includes a housing 5, which is a semi-conical shell structure formed by cutting a plane along the axial direction. The housing 5 has a connecting plate 51 at its edge for connection and fixation to the rotating shaft 2. The tip of the housing 5 faces the rotating blade 4, and the outer edge of the larger diameter end of the housing 5 is close to the inner wall of the steam pipe 1. That is, when steam passes through one side of the housing 5, it is gradually compressed, causing its flow velocity to increase. This eventually creates a high-speed airflow in the area near the inner wall of the steam pipe 1, blowing and gathering small water droplets adhering to the inner wall of the steam pipe 1 into larger droplets. Under the influence of gravity, these larger droplets can flow downwards to the bottom of the steam pipe 1 and are eventually discharged by the drainage component 6. Simultaneously, the housing 5 rotates continuously driven by the rotating shaft 2, allowing it to blow air at different locations on the inner wall of the steam pipe 1, thereby blowing and gathering all the attached small water droplets.

[0023] Preferably, the surface of the shell 5 is a convex arc-shaped structure, so that the surface of the shell 5 gradually becomes parallel to the inner wall of the steam pipe 1 along the steam flow direction. This ensures that the steam ultimately flows more parallel to the inner wall of the steam pipe 1, resulting in a better blowing effect on small water droplets. Furthermore, the shell 5 has an irregular arc structure in the direction perpendicular to the rotation axis 2, with its central part bulging outwards. This makes the distance between its two sides and the inner wall of the steam pipe 1 smaller than the distance between its central part and the inner wall of the steam pipe 1. This results in a smaller space for steam in the convex part, a faster flow velocity, and a stronger blowing ability in localized areas, which can also blow away some small water droplets, reducing the probability of small water droplets adhering.

[0024] The drainage component 6 extends through the inner wall of the steam pipe 1 to the outside, thereby draining the condensate. It should be noted that the inner wall of the steam pipe 1 has a recessed water collection groove located behind the corresponding wind deflector along the steam flow direction, and the drainage component 6 is correspondingly located at the bottom of the water collection groove.

[0025] like Figure 3As shown, specifically, the drainage assembly 6 includes a vertically arranged drain pipe 61 that extends through the inner wall of the steam pipe. An electrically controlled valve 65 is also installed at the bottom of the drain pipe 61. Furthermore, a float 62 is installed inside the drain pipe 61, and a pressure switch 63 is installed near the electrically controlled valve 65 at the bottom of the drain pipe 61. The pressure switch 63 is electrically connected to the electrically controlled valve 65. The outer edge of the pressure switch 63 is fixed to the inner wall of the drain pipe 61 via a connecting rod 64, thus not affecting water flow. The float 62 is located above the pressure switch 63, and its bottom area is larger than the top area of ​​the pressure switch 63. Simultaneously, a protective net 66 is provided at the top of the drain pipe 61 to prevent the float 62 from rising and detaching from the drain pipe 61. When there is a large amount of condensate that needs to be drained, the float 62 will rise and not contact the pressure switch 63, at which point the solenoid valve 65 will open. When the condensate has been drained and the float 62 falls back onto the pressure switch 63, the pressure switch 63 will control the solenoid valve 65 to close, preventing cold air from entering. The bottom of the drain pipe 61 can be connected to the circulating water system for reuse.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A steam pipe condensate drain apparatus, characterized by: The system includes several water collection assemblies sequentially arranged inside a steam pipe. Each water collection assembly includes a rotating shaft coaxially arranged inside the steam pipe and rotating blades and a wind deflector fixedly installed on the rotating shaft. The rotating blades are positioned in front of the wind deflector in the direction of steam flow, and the rotating surface of the rotating blades is perpendicular to the rotating shaft. The wind deflector includes a housing, which is a semi-conical shell structure formed by cutting a conical shell through an axial plane. The edge of the housing is provided with a connecting plate to connect and fix it to the rotating shaft. The tip of the housing faces the rotating blades, and the outer edge of the larger diameter end of the housing is close to the inner wall of the steam pipe. The system also includes a drainage assembly arranged in conjunction with the water collection assemblies. The drainage assembly is located adjacent to the rear of the water collection assemblies and extends through the inner wall of the steam pipe to the outside, thereby draining condensate.

2. A steam line condensate drain apparatus as defined in claim 1, wherein: The water collection assembly also includes two supports, which are fixedly connected to the inner wall of the steam pipe and are positioned at the front and rear ends of the rotating shaft. A bearing is installed in the middle of the support corresponding to the position of the rotating shaft, thereby rotatably connecting with the rotating shaft.

3. A steam line condensate drain apparatus as defined in claim 1, wherein: The shell surface has a convex arc-shaped structure, so that the shell surface gradually becomes parallel to the inner wall of the steam pipe along the steam flow direction.

4. A steam line condensate drain apparatus as defined in claim 1, wherein: The shell has an irregular arc structure in the direction perpendicular to the axis of rotation, with its middle part protruding outward, so that the distance between its two sides and the inner wall of the steam pipe is smaller than the distance between its middle part and the inner wall of the steam pipe.

5. A steam line condensate drain apparatus as defined in claim 1, wherein: The inner wall of the steam pipe has a recessed water collection trough located behind the corresponding wind deflector along the steam flow direction, and the drainage component is correspondingly located at the bottom of the water collection trough.

6. A steam line condensate drain apparatus as defined in claim 1, wherein: The drainage assembly includes a vertically arranged drain pipe that extends through the inner wall of the steam pipe and into the interior. An electrically controlled valve is also provided at the bottom end of the drain pipe.

7. A steam line condensate drain apparatus as claimed in claim 6, wherein: A float is installed inside the drain pipe, and a pressure switch is also installed at the bottom of the drain pipe near the electric control valve. The outer edge of the pressure switch is fixed to the inner wall of the drain pipe through a connecting rod, so as not to affect the flow of water. The float is located in the area above the pressure switch and its bottom area is larger than the top area of ​​the pressure switch.

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