CN112856235A - Automatic drainage system - Google Patents
Automatic drainage system Download PDFInfo
- Publication number
- CN112856235A CN112856235A CN202110018006.1A CN202110018006A CN112856235A CN 112856235 A CN112856235 A CN 112856235A CN 202110018006 A CN202110018006 A CN 202110018006A CN 112856235 A CN112856235 A CN 112856235A
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- CN
- China
- Prior art keywords
- pipeline
- wall
- steam
- flow
- drain
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
- F17D1/06—Pipe-line systems for gases or vapours for steam
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/14—Arrangements for supervising or controlling working operations for eliminating water
- F17D3/145—Arrangements for supervising or controlling working operations for eliminating water in gas pipelines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Pipe Accessories (AREA)
Abstract
The embodiment of the invention provides an automatic drainage system, which comprises: the temperature detection assembly is arranged on the steam pipeline and used for measuring the temperature of the top inner wall and the bottom inner wall of the steam pipeline; the flow regulating device is arranged on a drain pipeline of the steam pipeline and used for regulating the outlet flow of the drain pipeline; and the control device is used for adjusting the outlet flow of the drain pipe by controlling the flow adjusting device according to the temperatures of the top inner wall and the bottom inner wall of the steam pipeline measured by the temperature detection assembly. Can improve steam utilization ratio, shorten the warm braw time through this scheme.
Description
Technical Field
The invention relates to the technical field of steam pipeline drainage, in particular to an automatic drainage system.
Background
When the steam pipeline is used for heating, the heat of the steam is absorbed by the cold steam pipeline, and the steam is converted from superheated steam into saturated steam carrying a large amount of condensed water, so that the condensed water is generated. In order to prevent the condensed water from causing the phenomenon of water hammer, the condensed water in the steam pipeline needs to be discharged in time, namely, drained.
Before the warm pipe is finished, the temperature of the steam pipeline rises after absorbing steam, the steam is not converted into saturated steam carrying condensed water from superheated steam due to heat loss along with the fact that the temperature of the steam pipeline is consistent with the temperature of the steam, the condensed water is not generated in the steam pipeline, and at the moment, drainage can be stopped.
As shown in fig. 1, the conventional drain device includes a drain pipe 12 and an exhaust pipe 13 provided on a steam pipe 1, and a manual valve 151 is provided on the drain pipe 12 and the exhaust pipe 13. At present, because an on-site operator cannot judge the state of steam in the steam pipeline 1, before warming the steam pipeline 1, the manual valve 151 on the drain pipeline 12 is opened to drain water, and after warming the steam pipeline, the manual valve 151 on the drain pipeline 12 is closed to stop draining water. The method for opening the water drainage pipeline 12 for drainage in the pipe heating process wastes a large amount of steam, so that the steam utilization rate is low, and the pipe heating time is long.
Disclosure of Invention
The embodiment of the invention aims to provide an automatic drainage system to improve the utilization rate of steam and shorten the heating time. The specific technical scheme is as follows:
the embodiment of the invention provides an automatic drainage system, which comprises:
the temperature detection assembly is arranged on the steam pipeline and used for measuring the temperature of the top inner wall and the bottom inner wall of the steam pipeline;
the flow regulating device is arranged on a drain pipeline of the steam pipeline and used for regulating the outlet flow of the drain pipeline;
and the control device is used for adjusting the outlet flow of the drain pipe by controlling the flow adjusting device according to the temperatures of the top inner wall and the bottom inner wall of the steam pipeline measured by the temperature detection assembly.
Optionally, the control device is specifically configured to, when a difference between temperatures of the top inner wall and the bottom inner wall of the steam pipeline is greater than a preset threshold and the difference between the temperatures continuously decreases, reduce the outlet flow rate of the drain pipeline by controlling the flow rate adjustment device;
and when the temperature difference between the top inner wall and the bottom inner wall of the steam pipeline is smaller than a preset threshold value, closing the drainage pipeline by controlling the flow regulating device.
Optionally, the system further includes:
the N electric isolation valves are arranged on the steam pipeline at intervals and used for dividing the steam pipeline into N +1 sections of first pipelines;
the N bypass loops are connected with two adjacent sections of the first pipelines and are connected with the electric isolation valve in parallel; the bypass circuit is provided with an electric valve for opening or closing the bypass circuit;
correspondingly, the number of the hydrophobic pipelines is N +1, and each first pipeline is connected with one hydrophobic pipeline;
the number of the temperature detection assemblies and the number of the flow regulating devices are both N +1, each temperature detection assembly is arranged on one first pipeline, and each flow regulating device is arranged on one drain pipeline;
the control device is used for adjusting the outlet flow of the drain pipe by controlling the flow adjusting device on the drain pipe connected with the first pipe according to the temperatures of the top inner wall and the bottom inner wall of the first pipe, which are detected by the temperature detection assembly and are arranged on the first pipe, aiming at each first pipe.
Optionally, the flow regulating device comprises an electric stop valve or an electric regulating valve.
Optionally, the temperature detection assembly includes a pair of patch-type remote thermometers symmetrically disposed on the top inner wall and the bottom inner wall of the steam pipeline.
Optionally, the patch type remote thermometer is a wall-mounted thermocouple.
In the automatic drainage system provided by the embodiment of the invention, the control device adjusts the outlet flow of the drainage pipeline by controlling the flow adjusting device according to the temperatures of the top inner wall and the bottom inner wall of the steam pipeline measured by the temperature detection assembly, and drainage can be stopped in time when condensate water is not generated in the steam pipeline any more, so that a large amount of steam loss is prevented, the steam utilization rate is effectively improved, and the pipe heating time is shortened.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
FIG. 1 is a schematic structural view of a conventional hydrophobic apparatus;
FIG. 2 is a schematic structural diagram of an automatic drainage system according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another automatic hydrophobic system according to an embodiment of the present invention.
The reference numerals in the drawings are explained as follows:
1-steam pipeline, 10-electric isolating valve, 11-first pipeline, 111-temperature detecting component;
12-a drainage pipeline, 121-a flow regulating device, 122-a container;
13-an exhaust duct;
14-bypass circuit, 141-electric valve;
151-manual valve.
Detailed Description
The following describes a technical solution of an embodiment of the present invention with reference to the drawings in the embodiment of the present invention.
In order to improve the utilization rate of steam and shorten the heating time, the embodiment of the invention provides an automatic drainage system.
As shown in fig. 2, an automatic hydrophobic system according to an embodiment of the present invention includes:
a temperature detecting assembly 111 disposed on the steam pipe 1 for measuring temperatures of the top inner wall and the bottom inner wall of the steam pipe 1;
the flow regulating device 121 is arranged on the drain pipe 12 of the steam pipe 1 and is used for regulating the outlet flow of the drain pipe 12;
and a control device for controlling the flow rate adjusting device 121 to adjust the outlet flow rate of the drain pipe 12 according to the temperatures of the top inner wall and the bottom inner wall of the steam pipe 1 measured by the temperature detecting assembly 111.
It should be noted that, in the embodiment of the present invention, the temperature of the top inner wall and the bottom inner wall of the preset position of the steam pipeline 1 is detected by the temperature detecting component 111, and the amount of condensed water condensed in the steam pipeline 1 can be determined, so as to adjust the outlet flow of the drain pipeline 12 until the drain pipeline 12 is closed, and stop draining.
Further, the steam pipe 1 is provided with an exhaust pipe 13, the exhaust pipe is provided with a manual valve 151, and the manual valve 151 needs to be opened before warming up to allow steam introduced into the steam pipe to flow. A manual valve 151 may be provided in the drain pipe 12, and the manual valve 151 is normally open; when the equipment is overhauled, the manual valve 151 can be closed, so that the flow regulating device 121 is convenient to overhaul.
The condensed water discharged through the drain pipe 12 may be stored in a container 122 such as a reservoir, and may be recycled as cooling water or may be directly discharged into a sewer.
In the automatic drainage system provided by the embodiment of the invention, the control device adjusts the outlet flow of the drainage pipeline by controlling the flow adjusting device according to the temperatures of the top inner wall and the bottom inner wall of the steam pipeline measured by the temperature detection assembly, and drainage can be stopped in time when condensate water is not generated in the steam pipeline any more, so that a large amount of steam loss is prevented, the steam utilization rate is effectively improved, and the pipe heating time is shortened.
Optionally, the control device is specifically configured to, when the difference between the temperatures of the top inner wall and the bottom inner wall of the steam pipe 1 is greater than a preset threshold value, and the difference between the temperatures continuously decreases, decrease the outlet flow of the drain pipe 12 by controlling the flow regulating device 121;
when the temperature difference between the top inner wall and the bottom inner wall of the steam pipeline 1 is smaller than a preset threshold value, the drainage pipeline 12 is closed by controlling the flow regulating device 121.
It should be noted that when the temperature detecting assembly 111 measures that the temperature difference between the top inner wall and the bottom inner wall of the steam pipeline 1 continuously decreases, it can be known that the condensed water accumulated in the steam pipeline 1 decreases, and at this time, the flow reducing device is controlled to adjust the outlet flow of the drain pipeline, so that the condensed water can be discharged in time, and the loss of the steam can be effectively reduced; when the temperature difference between the top inner wall and the bottom inner wall of the steam pipeline 1 is smaller than the preset threshold, it can be considered that the condensed water in the steam pipeline 1 is completely discharged and the condensed water is not generated in the steam pipeline 1 any more, and at this time, the drain pipeline 12 is closed, so that unnecessary loss of steam can be reduced. Through the scheme of the embodiment of the invention, the steam loss can be effectively reduced, so that the steam utilization rate is improved, and the heating time is shortened.
It can be understood that the size of the preset threshold value is related to the size of the steam pipeline, the steam pressure and the flow transmitted by the steam pipeline, and the like, and can be set according to actual needs.
Alternatively, as shown in fig. 3, in order to improve the drainage effect of the condensed water in the steam pipe and rapidly drain the condensed water in the steam pipe, considering that the length of the steam pipe may be particularly long in practical applications, the system may further include:
the N electric isolation valves 10 are arranged on the steam pipeline 1 at intervals and used for dividing the steam pipeline 1 into N +1 sections of first pipelines 11;
the N bypass loops 14 are connected with two adjacent sections of the first pipelines 11 and are connected with the electric isolation valve 10 in parallel; an electric valve 141 for opening or closing the bypass circuit 14 is arranged on the bypass circuit 14;
correspondingly, the number of the hydrophobic pipes 12 is N +1, and each first pipe 11 is connected with one hydrophobic pipe 12;
the number of the temperature detection assemblies 111 and the number of the flow regulating devices 121 are both N +1, each temperature detection assembly 111 is arranged on one first pipeline 11, and each flow regulating device is arranged on one drain pipeline 12;
the control device is configured to, for each first pipe 11, adjust the outlet flow of the drain pipe 12 by controlling the flow adjusting device 121 on the drain pipe 12 connected to the first pipe 11 according to the temperatures of the top inner wall and the bottom inner wall of the first pipe 11 detected by the temperature detecting component 111 disposed on the first pipe 11.
It will be appreciated that for a steam pipe 1 of particularly long length, embodiments of the present invention divide the steam pipe 1 into a plurality of first short length pipes 11 by providing an electrically operated isolation valve 10 on the steam pipe 1. The automatic drainage can be performed in the same manner as in the above-described embodiment for each first pipe 11 having a shorter length. After the previous section of the first pipeline 11 is drained, the next section of the first pipeline 11 can be drained quickly, so that the drainage of the rest of the first pipeline 11 is finished successively, and the condensed water in the steam pipeline 11 can be drained quickly as a whole. The length of the first pipeline can be flexibly set according to the actual scene of the pipeline laying site, the number N of the electric isolation valves 10 in the figure 3 is two, and the number N of the electric isolation valves 10 is determined according to the actual length of the steam pipeline 1.
In addition, the system further comprises exhaust pipes 13, and the number of the exhaust pipes 13 corresponding to the number of the hydrophobic pipes is the same as that of the hydrophobic pipes 12, and the exhaust pipes 13 are arranged on the first pipe 11.
Alternatively, the flow regulating device 121 includes an electric shutoff valve or an electric control valve.
The control device can adjust the outlet flow of the drain pipe 12 by controlling the opening of the electric stop valve or the electric regulating valve.
Optionally, the temperature detecting assembly 111 comprises a pair of remote thermometers symmetrically disposed on the top inner wall and the bottom inner wall of the steam pipeline 1.
The remote thermometer has the characteristics of small temperature measuring probe, high sensitivity, linear scale, long service life and the like, is widely applied, belongs to the prior art in specific structure, and is not described herein any more.
Alternatively, the remote thermometer may be a wall-mounted thermocouple.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (6)
1. An automated hydrophobic system, comprising:
the temperature detection assembly (111) is arranged on the steam pipeline (1) and is used for measuring the temperature of the top inner wall and the bottom inner wall of the steam pipeline (1);
the flow regulating device (121) is arranged on the drainage pipeline (12) of the steam pipeline (1) and is used for regulating the outlet flow of the drainage pipeline (12);
and the control device is used for adjusting the outlet flow of the drain pipeline (12) by controlling the flow adjusting device (121) according to the temperatures of the top inner wall and the bottom inner wall of the steam pipeline (1) measured by the temperature detection assembly (111).
2. The automatic drain and drain system according to claim 1, wherein the control device is specifically configured to reduce the outlet flow of the drain pipe (12) by controlling the flow regulating device (121) when the difference between the temperatures of the top inner wall and the bottom inner wall of the steam pipe (1) is greater than a preset threshold value and the difference between the temperatures continues to decrease;
when the temperature difference between the top inner wall and the bottom inner wall of the steam pipeline (1) is smaller than a preset threshold value, the drainage pipeline (12) is closed by controlling the flow regulating device (121).
3. The automated hydrophobic system of claim 1, further comprising:
the N electric isolation valves (10) are arranged on the steam pipeline (1) at intervals and used for dividing the steam pipeline (1) into N +1 sections of first pipelines (11);
n bypass circuits (14) which connect two adjacent sections of the first pipelines (11) and are connected with the electric isolation valve (10) in parallel; wherein an electric valve (141) for opening or closing the bypass circuit (14) is arranged on the bypass circuit (14);
correspondingly, the number of the hydrophobic pipelines (12) is N +1, and each first pipeline (11) is connected with one hydrophobic pipeline (12);
the number of the temperature detection assemblies (111) and the number of the flow regulating devices (121) are both N +1, each temperature detection assembly (111) is arranged on one first pipeline (11), and each flow regulating device is arranged on one drain pipeline (12);
the control device is used for adjusting the outlet flow of the drainage pipeline (12) by controlling the flow adjusting device (121) on the drainage pipeline (12) connected with the first pipeline (11) according to the temperatures of the top inner wall and the bottom inner wall of the first pipeline (11) detected by the temperature detecting component (111) arranged on the first pipeline (11) aiming at each first pipeline (11).
4. The automatic hydrophobic system according to any of the claims 1 to 3, characterized in that the flow regulating means (121) comprise an electrically operated stop valve or an electrically operated regulating valve.
5. The automated hydrophobic system of claim 1, wherein the temperature detection assembly (111) comprises a pair of patch-type remote thermometers symmetrically disposed on the top inner wall and the bottom inner wall of the vapor pipe (1).
6. The automated hydrophobic system of claim 5, wherein the patch-based remote thermometer employs a wall-mounted thermocouple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110018006.1A CN112856235A (en) | 2021-01-07 | 2021-01-07 | Automatic drainage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110018006.1A CN112856235A (en) | 2021-01-07 | 2021-01-07 | Automatic drainage system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112856235A true CN112856235A (en) | 2021-05-28 |
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ID=76004762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110018006.1A Pending CN112856235A (en) | 2021-01-07 | 2021-01-07 | Automatic drainage system |
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| Country | Link |
|---|---|
| CN (1) | CN112856235A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114017661A (en) * | 2021-11-30 | 2022-02-08 | 中国华能集团清洁能源技术研究院有限公司 | Steam pipeline drainage method, system, equipment and medium capable of responding in advance |
-
2021
- 2021-01-07 CN CN202110018006.1A patent/CN112856235A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114017661A (en) * | 2021-11-30 | 2022-02-08 | 中国华能集团清洁能源技术研究院有限公司 | Steam pipeline drainage method, system, equipment and medium capable of responding in advance |
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