CN210511636U - Drainage control system of condensate water tank - Google Patents
Drainage control system of condensate water tank Download PDFInfo
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- CN210511636U CN210511636U CN201921237786.3U CN201921237786U CN210511636U CN 210511636 U CN210511636 U CN 210511636U CN 201921237786 U CN201921237786 U CN 201921237786U CN 210511636 U CN210511636 U CN 210511636U
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Abstract
The utility model discloses a condensate tank drainage control system, include: the device comprises a condensate water tank, a drain pump, a drain main pipe and a condenser; the water inlet pipe and the water outlet pipe of the drainage pump are respectively connected with the water outlet pipe of the condensed water tank and the water inlet of the drainage main pipe, the water outlet of the drainage main pipe is connected with the water inlet pipe of the condenser, and the drainage main pipe is provided with a drainage regulating valve. The scheme can solve the problem that the drainage control mode of the existing condensate water tank is not favorable for the safe operation of the drainage pump and causes larger impact on the pipeline due to the frequent start and stop of the drainage pump.
Description
Technical Field
The utility model relates to a condensate tank technical field of hydrophobic flash tank especially relates to a condensate tank drainage control system.
Background
During the starting and normal operation of a unit, a large amount of drainage water is drained to a drainage flash tank for steam-water separation in a thermal power plant; the water separated by the hydrophobic flash tank enters a condensed water tank, and the separated steam is discharged to the atmosphere or a heat exchanger; meanwhile, if the water quality in the condensate water tank is qualified, the condensate water is conveyed to a condenser by a drain pump; if the water quality in the condensate water tank is not qualified, the condensate water is conveyed to a circulating water return main pipe by a drain pump.
The drainage control mode of the existing condensate water tank is to control the start and stop of a drainage pump according to the liquid level condition in the condensate water tank: when the water level of the condensed water tank reaches a high water level, starting a drain pump to operate so as to reduce the liquid level of the condensed water tank; when the water level of the condensed water tank is low, the drain pump stops running to store water.
Therefore, the drainage control mode of the existing condensate water tank causes frequent start and stop of the drainage pump, which is not only unfavorable for the safe operation of the drainage pump, but also causes great impact on the pipeline due to frequent start and stop.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a condensate tank drainage control system to solve present condensate tank drainage control mode and stop the not being favorable to the drain pump safe operation that causes and lead to the fact great impact problem to the pipeline because of the drain pump frequently.
In order to solve the above problem, the utility model adopts the following technical scheme:
a condensate tank drainage control system comprising: the device comprises a condensate water tank, a drain pump, a drain main pipe and a condenser; the inlet tube and the outlet pipe of the drain pump respectively with the outlet pipe of condensate tank with the water inlet of the female pipe of drainage is connected, the delivery port of the female pipe of drainage with the water piping connection of condenser, just the female pipe of drainage is provided with the hydrophobic governing valve.
Furthermore, the condensed water tank drainage control system also comprises a drainage bypass pipeline; a water inlet and a water outlet of the drainage bypass pipeline are respectively connected with a water outlet pipe of the condensed water tank and the drainage main pipe, the water inlet of the drainage bypass pipeline is positioned at the upstream of a water inlet pipe of the drainage pump, and the water outlet of the drainage bypass pipeline is positioned at the upstream of the drainage regulating valve; the drain bypass pipeline is provided with a drain bypass control valve.
Further, the water outlet pipe of the condensed water tank is provided with a vertical section extending along the vertical direction, and the water inlet of the drainage bypass pipeline is connected with the vertical section.
Further, the drainage bypass control valve is a manual valve, an electric valve or an electromagnetic valve.
Further, the drainage bypass pipeline is also provided with a drainage bypass check valve.
Further, the main drainage pipe is also provided with a main pipe sampling valve, and the main pipe sampling valve is positioned at the upstream of the drainage regulating valve.
Furthermore, the drainage control system of the condensed water tank also comprises a circulating water return pipe; a water inlet of the circulating water return pipe is connected with the drainage main pipe, and one end of the circulating water return pipe connected with the drainage main pipe is positioned at the downstream of the drainage regulating valve; the circulating water return pipe is provided with circulating water control valve, the inlet tube of condenser is provided with condenser intake control valve.
Furthermore, the condensed water tank drainage control system also comprises a condensed water tank return pipe; a water inlet and a water outlet of the water return pipe of the condensed water tank are respectively connected with a water outlet pipe of the drain pump and the condensed water tank; and a return water control valve is arranged on a return water pipe of the condensed water tank.
Furthermore, a drain pump water control valve is further arranged on a water outlet pipe of the drain pump, and the drain pump water control valve is positioned at the downstream of a water inlet of a return water pipe of the condensed water tank.
Furthermore, a water inlet control valve of the drainage pump is arranged on a water inlet pipe of the drainage pump.
The utility model discloses a technical scheme can reach following beneficial effect:
the utility model discloses a condensate water tank drainage control system, which can make the drainage pump in long-term operation state and control the drainage flow of the drainage main pipe by controlling the opening of the drainage regulating valve, thereby achieving the purpose of controlling the liquid level of the condensate water tank; consequently, compare in current condensate tank drainage control mode, the utility model discloses a condensate tank drainage control system has reduced the frequency of opening and stopping of hydrophobic pump undoubtedly, is favorable to the safe operation of hydrophobic pump promptly, has avoided causing great impact to the pipeline because of the frequent start-stop of hydrophobic pump again, can also avoid the sudden rise and fall of the pipeline temperature that causes because of the pipeline cutout.
Drawings
The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:
fig. 1 is a block diagram of a drainage control system of a condensate water tank disclosed in embodiment 1 of the present invention;
fig. 2 is a block diagram of a drainage control system of a condensate tank disclosed in embodiment 2 of the present invention.
Description of reference numerals:
100-condensate water tank, 200-drain pump, 210-drain pump water inlet control valve, 220-drain pump water outlet control valve, 230-drain pump check valve, 300-drain regulating valve, 400-drain bypass pipeline, 410-drain bypass stop valve, 420-drain bypass check valve, 500-circulating water control valve, 510-circulating water return pipe check valve, 600-mother pipe sampling valve, 700-return control valve and 800-condenser water inlet control valve.
Detailed Description
To make the purpose, technical solution and advantages of the present invention clearer, the following will combine the embodiments of the present invention and the corresponding drawings to clearly and completely describe the technical solution of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The technical solutions disclosed in the embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Example 1
Referring to fig. 1, an embodiment of the present invention discloses a drainage control system for a condensate tank, including: a condensate water tank 100, a drain pump 200, a drain main pipe and a condenser; the water inlet pipe and the water outlet pipe of the drain pump 200 are respectively connected with the water outlet pipe of the condensed water tank 100 and the water inlet of the drain main pipe, the water outlet of the drain main pipe is connected with the water inlet pipe of the condenser, and the drain main pipe is provided with a drain regulating valve 300.
Based on the condensed water tank drainage control system, the drainage pump 200 can be in a long-term running state, and the drainage flow of the drainage main pipe is controlled by controlling the opening of the drainage regulating valve 300, so that the aim of controlling the liquid level of the condensed water tank 100 is fulfilled. Therefore, compared with the existing condensed water tank drainage control mode, the condensed water tank drainage control system undoubtedly reduces the starting and stopping frequency of the drainage pump 200, is further beneficial to the safe operation of the drainage pump 200, can avoid great impact on a pipeline caused by frequent starting and stopping of the drainage pump 200, and can also avoid sudden rising and sudden falling of the pipeline temperature caused by pipeline cutoff and the like.
Specifically, the drain main pipe can be further provided with a main pipe sampling valve 600, and the main pipe sampling valve 600 is positioned at the upstream of the drain regulating valve 300; meanwhile, the condensed water tank drainage control system also comprises a circulating water return pipe; a water inlet of the circulating water return pipe is connected with the drainage main pipe, and one end of the circulating water return pipe connected with the drainage main pipe is positioned at the downstream of the drainage regulating valve 300; the circulating water return pipe is provided with a circulating water control valve 500, and the on-off of the circulating water return pipe can be controlled through the circulating water control valve 500; a water inlet pipe of the condenser is provided with a condenser water inlet control valve 800, and the on-off of the water inlet pipe of the condenser can be controlled through the condenser water inlet control valve 800.
Wherein, above-mentioned female pipe sample valve 600 is convenient for carry out the sample detection to the quality of water in the female pipe of drainage, and then whether qualified control according to quality of water decides the hydrophobic flow direction behind hydrophobic governing valve 300: if the water quality is qualified, the circulating water control valve 500 is closed, and the condenser water inlet control valve 800 is opened, so that the drained water can pass through the water inlet pipe of the condenser; if the water quality is unqualified, the water inlet control valve 800 of the condenser is closed, and the circulating water control valve 500 is closed, so that the drained water can pass through a circulating water return pipe to facilitate the recovery and retreatment or other treatment stages of the unqualified water quality.
The drain control system of the condensed water tank in the embodiment can also be provided with a water return pipe of the condensed water tank; the water inlet and the water outlet of the water return pipe of the condensed water tank are respectively connected with the water outlet pipe of the drain pump 200 and the condensed water tank 100; a return water control valve 700 is arranged on a return water pipe of the condensed water tank; so that when waiting for a situation where the water of the water outlet pipe of the drain pump 200 is required to flow back to the condensed water tank 100, such as a situation where air is sucked into the condenser due to the water in the condensed water tank 100 being evacuated: the drain control valve 300 may be closed and the return control valve 700 may be opened to allow the water in the outlet pipe of the drain pump 200 to flow back into the condensate tank 100 through the condensate tank return pipe.
In order to more effectively control the on/off of the water outlet pipe of the drain pump 200, a drain pump water control valve 220 may be provided at the water outlet pipe of the drain pump 200, and the drain pump water control valve 220 may be located downstream of the water inlet of the return pipe of the condensed water tank. Meanwhile, the water inlet pipe of the drain pump 200 can be provided with a drain pump water inlet control valve 210, so that the on-off of the water inlet pipe of the drain pump 200 can be controlled conveniently, and the drain pump 200 can be isolated through the matching operation of the drain pump water inlet control valve 210 and the drain pump water outlet control valve 220, so that the maintenance and the like of the drain pump 200 can be facilitated.
Example 2
Referring to fig. 2, an embodiment of the present invention discloses a drainage control system for a condensate tank, including: the system comprises a condensate water tank 100, a drain pump 200, a drain main pipe, a drain bypass pipeline 400 and a condenser; the water inlet pipe and the water outlet pipe of the drain pump 200 are respectively connected with the water outlet pipe of the condensed water tank 100 and the water inlet of the drain main pipe, the water outlet of the drain main pipe is connected with the water inlet pipe of the condenser, and the drain main pipe is provided with a drain regulating valve 300.
A water inlet and a water outlet of the drainage bypass pipeline 400 are respectively connected with a water outlet pipe and a drainage main pipe of the condensed water tank 100, the water inlet of the drainage bypass pipeline 400 is positioned at the upstream of the water inlet pipe of the drainage pump 200, and the water outlet of the drainage bypass pipeline 400 is positioned at the upstream of the drainage regulating valve 300; the drain bypass pipe 400 is provided with a drain bypass control valve.
Based on the condensed water tank drainage control system, the drainage pump 200 can be closed, the drainage bypass control valve is opened, water in the condensed water tank 100 can automatically flow to the drainage main pipe through the drainage bypass pipeline 400, and the drainage flow of the drainage main pipe is controlled by controlling the opening of the drainage regulating valve 300 in a matched manner, so that the purpose of controlling the liquid level of the condensed water tank 100 is achieved; meanwhile, if the amount of water separated by the drain flash tank is large and the amount of water entering the condensate water tank 100 is increased, the drain pump 200 may be started to drain water to prevent the liquid level of the condensate water tank 100 from being too high when the drain bypass pipe 400 is not enough to effectively control and maintain the liquid level of the condensate water tank 100.
Therefore, compared with the existing condensed water tank drainage control method, the condensed water tank drainage control system of the embodiment can obviously reduce the start-stop frequency of the drainage pump 200, and can avoid the long-term operation of the drainage pump 200 compared with the condensed water tank drainage control system in embodiment 1, thereby achieving the purpose of energy saving.
Wherein, in order to avoid impurity in the hydrophobic bypass pipeline 400 to be brought into the condenser through hydrophobic bypass pipeline, the outlet pipe of condensate tank 100 can be provided with the vertical section that extends along vertical direction, and hydrophobic bypass pipeline 400's water inlet and vertical section are connected to make impurity in the hydrophobic bypass pipeline subside downwards under the action of gravity through vertical section, and then can avoid it to get into hydrophobic bypass pipeline 400.
Specifically, the drain main pipe can be further provided with a main pipe sampling valve 600, and the main pipe sampling valve 600 is positioned at the upstream of the drain regulating valve 300; meanwhile, the condensed water tank drainage control system also comprises a circulating water return pipe; a water inlet of the circulating water return pipe is connected with the drainage main pipe, and one end of the circulating water return pipe connected with the drainage main pipe is positioned at the downstream of the drainage regulating valve 300; the circulating water return pipe is provided with a circulating water control valve 500, and the on-off of the circulating water return pipe can be controlled through the circulating water control valve 500; a water inlet pipe of the condenser is provided with a condenser water inlet control valve 800, and the on-off of the water inlet pipe of the condenser can be controlled through the condenser water inlet control valve 800.
Meanwhile, the drainage control system of the condensed water tank can also be provided with a return pipe of the condensed water tank; the water inlet and the water outlet of the water return pipe of the condensed water tank are respectively connected with the water outlet pipe of the drain pump 200 and the condensed water tank 100; a return water control valve 700 is provided to a return water pipe of the condensate tank.
A drain pump water control valve 220 may be disposed on a water outlet pipe of the drain pump 200, and the drain pump water control valve 220 is located downstream of a water inlet of a return pipe of the condensed water tank; a drain pump inlet control valve 210 may also be provided at the inlet of the drain pump 200.
In this embodiment, the hydrophobic bypass control valve may be the hydrophobic bypass stop valve 410, the hydrophobic bypass check valve 420, or a valve group formed by the hydrophobic bypass stop valve 410 and the hydrophobic bypass check valve 420, so as to prevent the hydrophobic in the hydrophobic bypass pipeline 400 from reflowing; in the valve group formed by the drain bypass cut-off valve 410 and the drain bypass check valve 420, the drain bypass check valve 420 may be disposed downstream of the drain bypass cut-off valve 410 or upstream of the drain bypass cut-off valve 410.
Meanwhile, the water outlet pipe of the drainage pump 200 may be provided with a drainage pump check valve 230, and the circulating water return pipe may be provided with a circulating water return pipe check valve 510, so as to prevent drainage in the corresponding pipeline from reflowing. Wherein, the check valve 230 of the drain pump may be disposed at a position between the water inlet of the return pipe of the condensed water tank and the water control valve of the drain pump; the circulating water return check valve 510 may be disposed downstream of the circulating water control valve 500 or may be disposed upstream of the circulating water control valve 500.
The control valves of the drain pump water inlet control valve 210, the drain pump water outlet control valve 220, the drain bypass stop valve 410, the circulating water control valve 500, the main pipe sampling valve 600, the return water control valve 700 and the condenser water inlet control valve 800 can be all existing control valves such as an electromagnetic valve, an electric valve, a manual valve and the like; the drain control valve 300 may be an electric control valve or a pneumatic control valve; the drain pump check valve 230, the drain bypass check valve 420, and the circulating water return pipe are all existing check valves (i.e., check valves).
Meanwhile, the drainage pump 200 may be a set of drainage pumps, or at least two sets of drainage pumps arranged in parallel; it should be noted that: the upstream and the downstream are defined according to the flow direction of the hydrophobic water in the pipeline; wherein, the position of the hydrophobic water flow going ahead is defined as 'upstream', and the position of the hydrophobic water flow going behind is defined as 'downstream'; the main sampling valve 600 may be further disposed at an outlet pipe of the condensed water tank 100, and upstream of the inlet port of the drain bypass pipe 400.
The utility model discloses what the key description in the above embodiment is different between each embodiment, and different optimization characteristics are as long as not contradictory between each embodiment, all can make up and form more preferred embodiment, consider that the literary composition is succinct, then no longer describe here.
The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (10)
1. A condensate tank drainage control system, comprising: the device comprises a condensate water tank, a drain pump, a drain main pipe and a condenser; the inlet tube and the outlet pipe of the drain pump respectively with the outlet pipe of condensate tank with the water inlet of the female pipe of drainage is connected, the delivery port of the female pipe of drainage with the water piping connection of condenser, just the female pipe of drainage is provided with the hydrophobic governing valve.
2. The condensate tank drainage control system of claim 1, further comprising a drainage bypass conduit; a water inlet and a water outlet of the drainage bypass pipeline are respectively connected with a water outlet pipe of the condensed water tank and the drainage main pipe, the water inlet of the drainage bypass pipeline is positioned at the upstream of a water inlet pipe of the drainage pump, and the water outlet of the drainage bypass pipeline is positioned at the upstream of the drainage regulating valve; the drain bypass pipeline is provided with a drain bypass control valve.
3. The condensate tank drainage control system of claim 2, wherein the outlet pipe of the condensate tank has a vertical section extending in a vertical direction, and the inlet port of the drainage bypass pipe is connected to the vertical section.
4. The condensate tank drain control system of claim 3, wherein the drain bypass control valve is a manual valve, an electric valve, or an electromagnetic valve.
5. The condensate tank drainage control system of claim 4, wherein the drainage bypass conduit is further provided with a drainage bypass check valve.
6. The condensate tank drainage control system of any one of claims 1-5, wherein the drainage main is further provided with a main sampling valve, and the main sampling valve is located upstream of the drainage regulating valve.
7. The condensate tank drainage control system of claim 6, further comprising a circulating water return pipe; a water inlet of the circulating water return pipe is connected with the drainage main pipe, and one end of the circulating water return pipe connected with the drainage main pipe is positioned at the downstream of the drainage regulating valve; the circulating water return pipe is provided with circulating water control valve, the inlet tube of condenser is provided with condenser intake control valve.
8. The condensate tank drainage control system of any one of claims 1 to 5, further comprising a condensate tank return pipe; a water inlet and a water outlet of the water return pipe of the condensed water tank are respectively connected with a water outlet pipe of the drain pump and the condensed water tank; and a return water control valve is arranged on a return water pipe of the condensed water tank.
9. The condensate tank drainage control system of claim 8, wherein the water outlet pipe of the drainage pump is further provided with a drainage pump water control valve, and the drainage pump water control valve is located downstream of the water inlet of the water return pipe of the condensate tank.
10. The condensate tank drainage control system of claim 9, wherein a drainage pump inlet control valve is provided to an inlet pipe of the drainage pump.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921237786.3U CN210511636U (en) | 2019-08-02 | 2019-08-02 | Drainage control system of condensate water tank |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921237786.3U CN210511636U (en) | 2019-08-02 | 2019-08-02 | Drainage control system of condensate water tank |
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| CN210511636U true CN210511636U (en) | 2020-05-12 |
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| CN201921237786.3U Active CN210511636U (en) | 2019-08-02 | 2019-08-02 | Drainage control system of condensate water tank |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113758299A (en) * | 2021-09-08 | 2021-12-07 | 大唐陕西发电有限公司 | Water outlet system and method for small condenser of direct air-cooling thermal power generating unit |
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2019
- 2019-08-02 CN CN201921237786.3U patent/CN210511636U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113758299A (en) * | 2021-09-08 | 2021-12-07 | 大唐陕西发电有限公司 | Water outlet system and method for small condenser of direct air-cooling thermal power generating unit |
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