Spraying and condensate draining device for steam pipeline
By designing a shower guide and condensation device for low temperature environments, the problems of steam waste caused by traditional steam drain guide devices and the susceptibility of freezing and traps being frozen in low temperature environments are solved, and effective steam utilization and the effect of reducing production costs is achieved.
Patent Information
- Application Number
- CN202420461787.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-11
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-03-11
AI Technical Summary
In low-temperature production environments, traditional steam drainage and drainage devices lead to steam waste and easy to freeze, increasing maintenance and production costs.
A shower guide and decondensation device for low temperature environments is designed, and the structure of the shower guide pipe, main valve, bypass pipe and bypass valve is adopted. The bypass valve is manually controlled to decondensate, avoiding the use of trap valves.
It effectively avoids steam waste and freezing problems of traps, reduces the frequency of repair and replacement of traps, and reduces production costs.
Smart Images
Figure CN222616326U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a steam pipeline condensate draining device, in particular to the structure of a steam pipeline condensate draining device used in a low-temperature production environment. Background Art
[0002] Steam is the main energy carrier and auxiliary process logistics in the production process, and is a common energy carrier for industrial enterprises. During the pipeline transportation and supply process, condensate is generated and accumulated in the pipeline, and the condensate is discharged through the steam drain device.
[0003] The traditional steam trap device includes a drainage branch line installed on the steam main line, and a steam trap is installed on the drainage branch line. The steam trap is an automatic valve with a temperature, pressure or thermal power sensing element installed inside. It can close when encountering water vapor and open when encountering condensed water, that is, it can discharge condensed water without leaking steam as much as possible.
[0004] However, in the low temperature (below -20℃) production environment in winter, the temperature difference between the inside and outside of the pipeline is large, the condensate increases, and the steam trap is opened frequently, causing a large amount of steam to escape with the condensate, resulting in steam waste. In addition, in a low temperature environment, water is easily accumulated in the steam trap, causing the steam trap to be easily frozen, and the equipment needs to be frequently repaired and replaced, which increases production costs. Utility Model Content
[0005] The utility model aims to solve the problem that the existing condensate discharge device relies on a steam trap to discharge condensate, which may cause steam to escape, waste air and require frequent repair and replacement of the steam trap in a low temperature environment.
[0006] In order to achieve the above purpose, the utility model provides a shower guiding and condensate draining device for a steam pipeline in a low temperature environment, comprising a shower guiding pipe 2, a main valve 3, a bypass pipe 4, and a bypass valve 5.
[0007] The shower pipe 2 is installed at the lower side of the steam pipeline 1 and is communicated with the interior of the steam pipeline 1 . The main valve 3 is arranged in the shower pipe 2 for opening and closing the shower pipe 2 .
[0008] The bypass pipe 4 is U-shaped and serves as a bypass of the main valve 3. It is arranged on one side of the main valve 3, and its two ends are connected to the pipe sections in the shower pipe 2 located on both sides of the main valve 3. A bypass valve 5 is arranged in the bypass pipe 4 for opening and closing the bypass pipe 4.
[0009] The main valve 3 is a stop valve, and the bypass valve 5 is a needle valve.
[0010] During production, the main valve 3 is closed, and the condensate in the steam pipe 1 enters the shower pipe 2 from the steam pipeline 1. The staff manually opens the bypass valve 5, and the condensate is discharged from the bypass pipe 4. The staff needs to observe the flow of the condensate before proceeding to the next step, namely:
[0011] If the condensate flow is small, the bypass valve 5 can be closed, and staff can be arranged to conduct regular inspections, and the bypass valve 5 can be opened every certain period of time, such as 8 hours, to drain the condensate.
[0012] If the condensate flow is large, keep the bypass valve 5 open and control its opening to keep the condensate discharge stable. Arrange staff to conduct regular inspections, observe the condensate discharge situation at regular intervals, such as 6 hours, and adjust the opening of the bypass valve 5 to keep the condensate discharge flow and the condensate amount in the steam pipe 1 stable.
[0013] According to the field test, when the shower condensation drainage device is used to drain condensate according to the above method, no excess steam escapes from the end of the shower pipe 2, thus avoiding steam waste. The shower condensation drainage device does not have a steam trap, thus avoiding the steam trap from being frozen in a low temperature environment, and does not need to frequently repair or replace the steam trap, thus saving production costs.
[0014] Preferably, the shower guide pipe 2 is in a right-angle bend shape, with the bend serving as a boundary to form a first pipe section 21 and a second pipe section 22.
[0015] The first pipe section 21 is connected to the bottom of the steam pipeline 1 , and the second pipe section 22 is arranged horizontally, and its end is connected to the waste liquid tank through a conduit. The main valve 3 is arranged on the second pipe section 22 .
[0016] The bypass pipe 4 is connected to the pipe sections on both sides of the main valve 3 in the second pipe section 22 . The diameter of the bypass pipe 4 is smaller than that of the shower pipe 2 . The middle part of the bypass pipe 4 is parallel to the second pipe section 22 .
[0017] Since the main valve 3 is in a closed state in the production state, setting the shower pipe 2 into this shape instead of a vertical straight pipe can avoid long-term water accumulation in the shower pipe 2 in front of the main valve 3 to a certain extent, that is, it can prevent the main valve 3 that is closed in a low temperature environment from being frozen.
[0018] Preferably, it also includes a master control valve 6 , which is arranged in the first pipe section 21 of the shower pipe 2 , close to the steam pipeline 1 .
[0019] Therefore, when a fault occurs in the shower and condensate guiding and draining device, the main control valve 6 is closed, and the shower and condensate guiding and draining device can be repaired.
[0020] Preferably, the diameter of the shower pipe 2 is DN20-DN30 mm, and the diameter of the bypass pipe 4 is DN10-DN18 mm.
[0021] Field tests have shown that the use of the shower pipe 2 and the bypass pipe 4 of the above-mentioned diameters can ensure that no steam escapes from the end of the bypass valve 5.
[0022] Preferably, the distance between the main valve 3 and the bypass valve 5 does not exceed 15 cm.
[0023] That is, the bypass pipe 4 is very close to the main valve 3. During production, the residual heat of the bypass pipe 4 for discharging condensation is used to keep the main valve 3 warm, thereby ensuring that the main valve 3 is not frozen. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 This is a structural illustration of a condensate draining device for steam pipelines;
[0025] Figure 2 It is a process flow diagram for a steam pipeline drainage device. DETAILED DESCRIPTION
[0026] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. The following description is a concretization of the claims of the present invention.
[0027] Example
[0028] Figure 1 The structure of the condensation draining device for steam pipeline is shown. Figure 2 The process flow of the steam pipeline condensation device is shown below. Figure 1 , Figure 2 The structure, use method and beneficial effects of the shower and condensation drainage device are described.
[0029] The condensation drainage device is used for steam pipeline 1, which is used to discharge the condensed water in the steam pipeline 1 and reduce the water hammer phenomenon. One is set every 2.5m on the steam pipeline 1 with a diameter of DN900mm and wrapped with an insulating asbestos mesh.
[0030] like Figure 1 , 2 As shown, it includes a shower pipe 2, a main valve 3, a bypass pipe 4 (stop valve), a bypass valve 5 (needle valve), and a master control valve 6 (stop valve).
[0031] The diameter of the shower pipe 2 is DN25 mm, and it is in a right-angled shape, with the bent portion as the boundary to form a first pipe section 21 and a second pipe section 22.
[0032] The first pipe section 21 is connected to the bottom of the steam pipeline 1, and the second pipe section 22 is arranged horizontally, and the end thereof is connected to the waste liquid tank through a conduit. The master control valve 6 is a normally open stop valve for maintenance, and is closed when the shower and condensate drainage device fails.
[0033] The main valve 3 is arranged on the second pipe section 22. The main valve 3 is a normally closed stop valve, which is opened only when the production system is shut down, started up or fails, and is used to quickly drain the condensate in the steam pipe 1.
[0034] like Figure 1 , 2 As shown, the bypass pipe 4 is connected to the pipe sections on both sides of the main valve 3 in the second pipe section 22. The diameter of the bypass pipe 4 is DN15mm (smaller than the shower pipe 2), and the middle part of the bypass pipe 4 is parallel to the second pipe section 22.
[0035] The bypass valve 5 is a needle valve, which is arranged in the middle of the bypass pipe 4 and located on one side of the main valve 3, and is used to open and discharge condensate during normal production. The distance between the main valve 3 and the bypass valve 5 does not exceed 15 cm.
[0036] The following combination Figure 2 Instructions for using the shower drainage device:
[0037] like Figure 2 As shown, during production, the main valve 3 is in a closed state, the master control valve 6 is in an open state, and the condensate in the steam pipe 1 enters the second pipe section 22 from the first pipe section 21. The bypass valve 5 is manually opened by the staff, and the condensate is discharged from the bypass pipe 4 to observe the flow of the condensate.
[0038] When the condensate flow rate is small, the bypass valve 5 can be closed after the condensate is drained. After that, the staff needs to be arranged to conduct regular inspections and open the bypass valve 5 to drain the condensate at regular intervals, such as 8 hours.
[0039] When the condensate flow is large, the bypass valve 5 is kept open and its opening is controlled based on experience to keep the condensate discharge stable. After that, the staff needs to be arranged to conduct regular inspections, observe the condensate discharge situation at regular intervals, such as 6 hours, and adjust the opening of the bypass valve 5 to keep the condensate discharge flow and the condensate amount in the steam pipe 1 stable.
[0040] According to the field test, when the shower and condensate drainage device is used to drain condensate by using the bypass pipe 4 and the bypass valve 5 arranged therein, no excess steam escapes from the end of the second pipe section 22, thus avoiding steam waste. The shower and condensate drainage device does not have a steam trap, thus avoiding the situation where the steam trap is frozen in a low temperature environment, and does not need to frequently repair or replace the steam trap, thus saving production costs.
[0041] When the condensation guide and drainage device fails, the main control valve 6 is closed to overhaul the condensation guide and drainage device. During the start-up and shutdown of the production system, the temperature of the steam pipe 1 does not reach the preset value, and the condensate will increase. The bypass valve 5 is closed and the main valve 3 is opened so that the condensate can be quickly discharged from the steam pipe 1.
[0042] Since the distance between the main valve 3 and the bypass valve 5 does not exceed 15 cm, that is, the bypass pipe 4 is very close to the main valve 3, during production, the main valve 3 can be kept warm by using the waste heat from the bypass pipe 4 to prevent the main valve 3 from being frozen.
Claims
1. A condensation drainage device for steam pipelines, characterized in that: It comprises a shower pipe (2), a main valve (3), a bypass pipe (4), and a bypass valve (5). The shower guide pipe (2) is installed at the lower side of the steam pipeline (1) and is in communication with the interior of the steam pipeline (1). The main valve (3) is arranged in the shower guide pipe (2) and is used to open and close the shower guide pipe (2). The bypass pipe (4) is U-shaped and serves as a bypass for the main valve (3). It is arranged on one side of the main valve (3), and its two ends are connected to the pipe sections located on both sides of the main valve (3) in the shower pipe (2). The bypass valve (5) is arranged in the bypass pipe (4) and is used to open and close the bypass pipe (4). The main valve (3) is a stop valve, and the bypass valve (5) is a needle valve.
2. The device for draining and condensing steam from a steam pipeline according to claim 1, characterized in that: The shower guide pipe (2) is in a right-angle bent shape, with the bent portion as a boundary to form a first pipe section (21) and a second pipe section (22). The first pipe section (21) is connected to the bottom of the steam pipeline (1), and the second pipe section (22) is arranged transversely, and the end thereof is connected to the waste liquid tank through a conduit. The main valve (3) is arranged on the second pipe section (22), The bypass pipe (4) and the second pipe section (22) are connected to the pipe sections on both sides of the main valve (3); the diameter of the bypass pipe (4) is smaller than that of the shower guide pipe (2); and the middle part of the bypass pipe (4) is parallel to the second pipe section (22).
3. The device for draining and condensing steam from a steam pipeline according to claim 2, characterized in that: It also comprises a master control valve (6), wherein the master control valve (6) is arranged in the first pipe section (21) of the shower pipe (2), close to the steam pipeline (1).
4. The device for draining and condensing steam from a steam pipeline according to claim 3, characterized in that: The diameter of the shower pipe (2) is DN20 to DN30 mm, and the diameter of the bypass pipe (4) is DN10 to DN18 mm.
5. The shower and condensate draining device for a steam pipeline according to any one of claims 1 to 4, characterized in that: The distance between the main valve (3) and the bypass valve (5) does not exceed 15 cm.