CN210424457U - Low pressure steam pipeline drainage device - Google Patents
Low pressure steam pipeline drainage device Download PDFInfo
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- CN210424457U CN210424457U CN201921444977.7U CN201921444977U CN210424457U CN 210424457 U CN210424457 U CN 210424457U CN 201921444977 U CN201921444977 U CN 201921444977U CN 210424457 U CN210424457 U CN 210424457U
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Abstract
The utility model provides a low pressure steam line hydrophobic means, including collector pipe, the branch pipe that drains, drainage branch pipe, reducing pipe and connecting piece, the collector pipe is vertical to be installed in steam line bottom and communicate with steam line, and the flange blind plate is installed to this collector pipe bottom, the one end of the branch pipe that drains is connected with the lateral wall of collector pipe and drains branch pipe and collector pipe intercommunication, the other end and the reducing pipe intercommunication of the branch pipe that should drain, it just to be equipped with first valve and second valve on the branch pipe that drains first valve is close to the collector pipe setting. The utility model discloses the hydrophobic means who protects has the reduction and blocks up, and the installation is dismantled conveniently, and the easy access is advantage such as reduce cost.
Description
Technical Field
The utility model belongs to the drainage equipment field especially relates to a low pressure steam pipeline drainage device.
Background
When the steam temperature is higher, gas can enter the water collecting pipe possibly. The conventional drainage device is characterized in that a water collecting pipe is arranged below a main pipeline, the bottom of the water collecting pipe is connected with a reducing or reducing flange and then connected with a drainage branch, and the middle part of the water collecting pipe is provided with a drainage branch. When the pipeline is blown or stopped for a long time and restarted, a large amount of sundries or rust can enter the water collecting pipe and accumulate at the bottom of the water collecting pipe, and the water discharging branch pipe are easily blocked.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a low pressure steam line drainage device to realize effectively reducing the jam, the installation is dismantled conveniently, and the easy access practices thrift the cost, reduces the leakage possibility.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
a low-pressure steam pipeline drainage device comprises a water collecting pipe, a water discharging branch pipe, a drainage branch pipe, a reducing pipe and a connecting piece, wherein the water collecting pipe is vertically arranged at the bottom of a steam pipeline and is communicated with the steam pipeline;
the drainage branch pipe is connected with a drainage branch pipe in parallel, two ends of the drainage branch pipe are respectively communicated with the drainage branch pipe, one end of the drainage branch pipe and a port of the drainage branch pipe are positioned between the first valve and the second valve, the other end of the drainage branch pipe and a port of the drainage branch pipe are positioned on one side of an outlet of the second valve, a third valve, a filter and a drainage valve which are sequentially communicated are arranged on the drainage branch pipe from the inlet to the outlet, the central axes of the drainage branch pipe and the drainage branch pipe are positioned on the same horizontal plane, and the pipe diameter of the drainage branch pipe is smaller than that of the drainage branch pipe;
the steam pipeline is fixedly connected with the water discharging branch pipe through a connecting piece, and the connecting part of the connecting piece and the water discharging branch pipe is close to the connecting part of the outlet side of the water discharging branch pipe and the water discharging branch pipe.
Furthermore, the drain branch pipe also comprises a steel pipe and 2 stamping elbows, two ends of one stamping elbow are respectively communicated with the drain branch pipe and the third valve through the steel pipe, and two ends of the other stamping elbow are respectively communicated with the drain valve and the drain branch pipe through the steel pipe.
Furthermore, two ends of the connecting piece are respectively welded with the water discharging branch pipe and the steam pipe, and the connecting piece is an angle steel.
Furthermore, the vertical height from the central axis of the water discharging branch pipe to the bottom of the steam pipeline is not less than 200 mm. The water discharging and draining branch pipes cannot influence heat preservation, so in order to install and preserve heat, the vertical height of the central axis of the water discharging branch pipe from the bottom of the steam pipeline is not less than 150mm, and preferably more than 200 mm;
furthermore, the vertical height from the central axis of the water discharging branch pipe to the bottom of the steam pipeline is 250 mm.
Further, the vertical height from the central axis of the water discharge branch pipe to the bottom of the water collecting pipe is 150mm and 350 mm.
Furthermore, the vertical height from the central axis of the water discharging branch pipe to the bottom of the water collecting pipe is 250 mm. Theoretically, the farther the drain branch pipe is from the bottom of the water collecting pipe, the better, but considering the installation distance of the pipeline, the bottom of the water collecting pipe cannot be too close to the ground, otherwise the flange blind plate at the bottom of the water collecting pipe is difficult to detach and easy to corrode, so the vertical height of the central axis of the drain branch pipe from the bottom of the water collecting pipe is 350mm, and further preferably 250 mm.
Further, a check valve is arranged at the outlet end of the drain valve.
Furthermore, the first valve is a welding gate valve, and the second valve and the third valve are both flange gate valves.
Furthermore, the water discharging branch pipe is a straight pipe which is horizontally installed, and the length of the outlet end of the water discharging branch pipe from the central axis of the water collecting pipe is not less than 1800 mm. If the drain branch pipe is too short, the installation distance of the device cannot be met, and a good drainage effect cannot be achieved.
Compared with the prior art, the low pressure steam pipeline drainage device of the utility model has the following advantages:
(1) a low pressure steam line drainage device, the collector pipe bottom adopts the flange blind plate to block up, connects out the branch pipe and sets up branch pipe and the drainage branch pipe of draining from the collector pipe middle part, when pipeline construction phase pipeline sweeps, rust and debris are piled up in the pipeline in the collector pipe bottom, wait to sweep and remove and install the blind plate again after dismantling this blind plate clean up debris after finishing, avoided debris to pile up and to be difficult to the phenomenon that the emission is totally led to draining and drainage branch pipe blocks up. When the pipeline is stopped and restarted, rust in the steam pipeline can be deposited at the bottom of the water collecting pipe, and the smoothness of the water discharging pipe and the drain pipe is not influenced.
(2) A low pressure steam line drainage device, by import to the export direction on the branch pipe that drains be equipped with first valve and second valve in proper order, be equipped with the third valve on the drainage branch pipe, first valve is normally open valve when the pipeline moves, less operation, not fragile, adopts the welding valve, can reduce the possibility that the pipeline leaked simultaneously, flange valve convenient to detach maintenance is all adopted to second valve and third valve.
(3) A low pressure steam pipeline drainage device, trap valve can adopt stainless steel trap, temperature application scope is wide, is particularly useful for the low pressure steam pipeline below 350 ℃.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is a schematic side view of a low pressure steam line trap according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of a low pressure steam line trap 1-1 according to an embodiment of the present invention.
Description of reference numerals:
1-a water collecting pipe; 2-flange blind plate; 3-a water discharge branch pipe; 4-a first valve; 5-a second valve; 51-a second flange; 6-a drain branch pipe; 61-punching the elbow; 62-a first steel tube; 63-a second steel tube; 7-a third valve; 71-a third flange; 8-a filter; 9-a drain valve; 10-reducing pipe; 11-connecting piece.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Example (b):
as shown in fig. 1-2, a low pressure steam pipeline drainage device comprises a water collecting pipe 1, a water discharging branch pipe 3, a drainage branch pipe 6, a reducing pipe 10 and a connecting piece 11, wherein the water collecting pipe 1 is vertically installed at the bottom of the steam pipeline and communicated with the steam pipeline, a flange blind plate 2 is installed at an outlet of the water collecting pipe 1, an outlet of the water collecting pipe 1 is located at the bottom of the water collecting pipe 1, one end of the water discharging branch pipe 3 is connected with the side wall of the water collecting pipe 1, the water discharging branch pipe 3 is communicated with the water collecting pipe 1, the other end of the water discharging branch pipe 3 is communicated with the reducing pipe 10, a first valve 4 and a second valve 5 which are sequentially communicated are arranged on the water discharging branch pipe 3 along the direction from the inlet to the outlet of the water discharging branch.
The water drain branch pipe 3 is connected with a water drain branch pipe 6 in parallel, two ends of the water drain branch pipe 6 are respectively communicated with the water drain branch pipe 3, one end of the water drain branch pipe 6 and a connector of the water drain branch pipe 3 are positioned between the first valve 4 and the second valve 5, the other end of the water drain branch pipe 6 and a connector of the water drain branch pipe 3 are positioned on one side of an outlet of the second valve 5, a third valve 7, a filter 8 and a water drain valve 9 which are sequentially communicated are arranged on the water drain branch pipe 6 from the inlet to the outlet, the central axes of the water drain branch pipe 6 and the water drain branch pipe 3 are positioned on the same horizontal plane, and the pipe diameter of the water drain branch pipe 6 is smaller. Preferably, the steam trap 9 is a stainless steel steam trap, which has low cost and wide temperature application range, but has no filter, so that the steam trap 9 is matched with the filter 8, most of the steam used in practice is at 300 ℃ of 250-.
The filter 8 and the drain valve 9 are both horizontally installed, the water discharging branch pipe 3 is a straight pipe which is horizontally installed, preferably, the length of the outlet end of the water discharging branch pipe 3 from the central axis of the water collecting pipe 1 is not less than 1800mm, and further preferably, the length of the outlet end of the water discharging branch pipe 3 from the central axis of the water collecting pipe 1 is 1800 mm. The vertical height of the central axis of the water discharging branch pipe 3 from the bottom of the steam pipeline is not less than 200mm, preferably, the vertical height of the central axis of the water discharging branch pipe 3 from the bottom of the steam pipeline is 250mm, and the vertical height of the central axis of the water discharging branch pipe 3 from the bottom of the water collecting pipe 1 is 250 mm.
The drain branch pipe 6 further comprises a steel pipe and 2 stamping elbows 61, two ends of one stamping elbow 61 are respectively communicated with the drain branch pipe 3 and the third valve 7 through the steel pipe, two ends of the other stamping elbow 61 are respectively communicated with the drain valve 9 and the drain branch pipe 3 through the steel pipe, and the stamping elbow 61 is a 90-degree stamping elbow. As shown in fig. 2, of the two steel pipes connecting the ram elbow 61 and the drain branch pipe 3, the steel pipe at the inlet end of the drain branch pipe 6 is a first steel pipe 62, and the steel pipe at the outlet end of the drain branch pipe is a second steel pipe 63. Preferably, the first steel pipe 62 and the second steel pipe 63 are parallel to each other, and the distance between the central axis of the first steel pipe 62 and the central axis of the second steel pipe 63 is not less than 1000 mm. More preferably, the distance between the central axis of the first steel pipe 62 and the central axis of the second steel pipe 63 is 1000 mm. Preferably, the center of trap 9 is 250mm from the center axis of second steel pipe 63. Preferably, the distance between the center of third valve 7 and the center of trap 9 is 500 mm. Preferably, the distance between the center of the second valve 5 and the central axis of the first steel pipe 62 and the central axis of the second steel pipe 63 are both 500 mm. Preferably, the joint of the first steel pipe 62 and the water discharge branch pipe 3 is 250mm away from the center of the first valve 4. Preferably, the joint of the second steel pipe 63 and the water discharge branch pipe 3 is 200mm away from the outlet end of the water discharge branch pipe 3.
When the device normally operates, the first valve 4 and the third valve 7 are normally opened, the second valve 5 is closed, steam in the pipeline is higher than the external pressure, the generated pressure difference enables water to be discharged out of the pipeline, water or a water-gas mixture in the steam pipeline passes through the water collecting pipe 1, the first valve 4 enters the drain branch pipe 6, the water flows through the third valve 7 and the filter 8 enters the drain valve 9, the drain valve 9 can pass through liquid and cannot pass through steam, finally, the water in the pipeline is discharged through the drain valve 9, the steam is intercepted, and only water is discharged without discharging steam in a normal operation state.
When the pipeline has faults, such as overhigh steam humidity or large-area damage of the front heat preservation, and overlarge water quantity, the second valve 5 is opened, namely the second valve 5 and the third valve 7 are in an opening state at the same time, and water is drained outwards; when there is a relatively large object blocking the pipe, a part of the blockage can be discharged outward by opening the second valve 5.
In addition, when the drain valve 9 is damaged, the third valve 7 is closed, the second valve 5 is opened to a smaller opening degree, so that the steam and the water flowing out of the first valve 4 are discharged through the second valve 5, and only the filter 8 and the drain valve 9 can be overhauled; when the second valve 5 and the third valve 7 are damaged and need to be changed, the first valve 4 is closed, and the second valve 5 and the third valve 7 are disassembled to change the valves, so that the convenience of overhauling, installing and disassembling is improved.
The two ends of the second valve 5 are connected with the water drain branch pipe 3 through a second flange 51, the two ends of the third valve 7 are connected with the water drain branch pipe 3 through a third flange 71, preferably, the first valve 4 is a welded gate valve, and the second valve 5 and the third valve 7 are both flange gate valves. In the actual work, the possibility that second valve 5, third valve 7 damaged is higher, so adopted convenient to detach's flange mounting, nevertheless the flange valve live time is longer or the installation appears leaking easily when bad, trap 9 receives the impact of water and gentleness for a long time, valve gas leakage phenomenon also appears easily, and first valve 4 is the normally open valve, the operation is less, not fragile, so first valve 4 adopts the welding valve, the matching of welding valve and flange valve, can effectively avoid the pipeline to produce the leakage, both guaranteed the convenience of overhauing fortune dimension, the possibility of leaking has also been reduced.
The water discharging branch pipes 3 are fixedly connected with the steam pipeline through connecting pieces 11, and the connecting parts of the connecting pieces 11 and the water discharging branch pipes 3 are close to the connecting parts of the outlet sides of the water discharging branch pipes 6 and the water discharging branch pipes 3. Two ends of the connecting piece 11 are respectively welded with the water discharging branch pipe 3 and the steam pipe, and the connecting piece 11 is an angle steel. The trap 9 may fall down after a period of use, and the drain branch pipe 3 and the steam pipe are welded by angle steel, so that the trap 9 is prevented from moving downwards to a certain extent.
Adopt flange blind plate 2 to seal bottom the collector pipe 1, connect out the branch pipe and set up branch pipe 3 and the drainage branch pipe 6 of draining from 1 middle part of collector pipe, when the pipeline was swept in the pipeline construction phase, rust and debris in the pipeline were piled up in collector pipe 1 bottom, wait to sweep and remove again flange blind plate 2 after finishing demolising this flange blind plate 2 clean up debris, have avoided because debris are piled up difficult to the phenomenon that the branch pipe 3 and the drainage branch pipe 6 of draining cleanly take place to block up. When the pipeline is stopped and restarted, rust in the steam pipeline can be deposited at the bottom of the water collecting pipe 1, and water discharging and the smoothness of a water discharging channel are not influenced.
The outlet end of the reducing pipe 10 is communicated with a drainage well through a galvanized steel pipe, and fluid passing through the drain valve 9 or the second valve 5 flows through the drain branch pipe 3 to enter the reducing pipe 10 and is finally discharged to the drainage well. Preferably, the outlet end of the trap 9 is fitted with a check valve. When the condensed water of the drainage device is discharged to the pressure device, the check valve is arranged to avoid the backflow of the condensed water and ensure the normal operation of the drainage device.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a low pressure steam line drainage device, includes collector pipe (1), drain branch pipe (3), drainage branch pipe (6), reducing pipe (10) and connecting piece (11), its characterized in that:
the steam pipeline is characterized in that the water collecting pipe (1) is vertically arranged at the bottom of the steam pipeline and communicated with the steam pipeline, a flange blind plate (2) is arranged at the outlet of the water collecting pipe (1), the outlet of the water collecting pipe (1) is positioned at the bottom of the water collecting pipe (1), one end of the water discharging branch pipe (3) is connected with the side wall of the water collecting pipe (1), the water discharging branch pipe (3) is communicated with the water collecting pipe (1), the other end of the water discharging branch pipe (3) is communicated with the reducing pipe (10), a first valve (4) and a second valve (5) which are sequentially communicated are arranged on the water discharging branch pipe (3) along the direction from the inlet to the outlet of the water discharging branch pipe, and the first valve (4) is arranged close to the water;
the water drain branch pipe (3) is connected with a water drain branch pipe (6) in parallel, two ends of the water drain branch pipe (6) are respectively communicated with the water drain branch pipe (3), one end of the water drain branch pipe (6) and an interface of the water drain branch pipe (3) are positioned between a first valve (4) and a second valve (5), the other end of the water drain branch pipe (6) and an interface of the water drain branch pipe (3) are positioned on one side of an outlet of the second valve (5), a third valve (7), a filter (8) and a drain valve (9) which are sequentially communicated are arranged on the water drain branch pipe (6) from the inlet to the outlet, the central axes of the water drain branch pipe (6) and the water drain branch pipe (3) are positioned on the same horizontal plane, and the pipe diameter of the water drain branch pipe (6) is smaller than that of the water drain branch pipe (;
the water-saving steam turbine is characterized in that two ends of the second valve (5) are connected with the water drain branch pipes (3) through second flanges (51), two ends of the third valve (7) are connected with the water drain branch pipes (3) through third flanges (71), the water drain branch pipes (3) are fixedly connected with steam pipelines through connecting pieces (11), and the connecting parts of the connecting pieces (11) and the water drain branch pipes (3) are close to the connecting parts of the outlet sides of the water drain branch pipes (6) and the water drain branch pipes (3).
2. The low pressure steam line trap of claim 1, wherein: the drainage branch pipe (6) comprises a steel pipe and 2 stamping elbows (61), two ends of one stamping elbow (61) are respectively communicated with the drainage branch pipe (3) and the third valve (7) through the steel pipe, and two ends of the other stamping elbow (61) are respectively communicated with the drainage valve (9) and the drainage branch pipe (3) through the steel pipe.
3. The low pressure steam line trap of claim 1, wherein: two ends of the connecting piece (11) are respectively welded with the water drain branch pipe (3) and the steam pipe, and the connecting piece (11) is an angle steel.
4. The low pressure steam line trap of claim 1, wherein: the vertical height of the central axis of the water discharging branch pipe (3) from the bottom of the steam pipeline is not less than 200 mm.
5. The low pressure steam line trap of claim 1, wherein: the vertical height of the central axis of the water discharging branch pipe (3) from the bottom of the steam pipeline is 250 mm.
6. The low pressure steam line trap of claim 1, 4 or 5, wherein: the vertical height of the central axis of the water discharging branch pipe (3) from the bottom of the water collecting pipe (1) is 150-350 mm.
7. The low pressure steam line trap of claim 1, 4 or 5, wherein: the vertical height from the central axis of the water discharging branch pipe (3) to the bottom of the water collecting pipe (1) is 250 mm.
8. The low pressure steam line trap of claim 1, wherein: and a check valve is arranged at the outlet end of the drain valve (9).
9. The low pressure steam line trap of claim 1, wherein: the first valve (4) is a welding gate valve, and the second valve (5) and the third valve (7) are both flange gate valves.
10. The low pressure steam line trap of claim 1, wherein: the water discharging branch pipe (3) is a straight pipe which is horizontally installed, and the distance between the outlet end of the water discharging branch pipe (3) and the center of the central axis of the water collecting pipe (1) is not less than 1800 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921444977.7U CN210424457U (en) | 2019-09-02 | 2019-09-02 | Low pressure steam pipeline drainage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921444977.7U CN210424457U (en) | 2019-09-02 | 2019-09-02 | Low pressure steam pipeline drainage device |
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| Publication Number | Publication Date |
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| CN210424457U true CN210424457U (en) | 2020-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921444977.7U Active CN210424457U (en) | 2019-09-02 | 2019-09-02 | Low pressure steam pipeline drainage device |
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| CN (1) | CN210424457U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112664817A (en) * | 2020-12-17 | 2021-04-16 | 杭州英集动力科技有限公司 | Active drainage system based on steam pipe network model |
-
2019
- 2019-09-02 CN CN201921444977.7U patent/CN210424457U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112664817A (en) * | 2020-12-17 | 2021-04-16 | 杭州英集动力科技有限公司 | Active drainage system based on steam pipe network model |
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