CN210239761U - Overflow water recovery system - Google Patents
Overflow water recovery system Download PDFInfo
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- CN210239761U CN210239761U CN201921135612.6U CN201921135612U CN210239761U CN 210239761 U CN210239761 U CN 210239761U CN 201921135612 U CN201921135612 U CN 201921135612U CN 210239761 U CN210239761 U CN 210239761U
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- pipeline
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- shaft seal
- overflow water
- recovery system
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Abstract
The utility model provides an overflow water recovery system, which comprises a generator stator cooling water tank, a sewage draining pit and a first pipeline communicated with the generator stator cooling water tank and the sewage draining pit; the steam turbine shaft seal heater is communicated with the steam turbine shaft seal; and the third pipeline is communicated with the first pipeline and the second pipeline, the interface of the first pipeline and the drain pit is a first interface, the interface of the first pipeline and the third pipeline is a second interface, and a first valve is arranged between the first interface and the second interface. Through the third pipeline with first pipeline and second pipeline intercommunication to set up first valve between first interface and second interface, the first valve is closed to the accessible, makes the overflow water flow to the shaft seal heater through third pipeline and second pipeline and retrieves to the condenser after, with the recycle behind the overflow water recovery, this overflow water recovery system has can the water reclamation resource, reduction in production cost and reduction wastewater discharge advantage.
Description
Technical Field
The utility model relates to a water recovery system field especially relates to an overflow water recovery system.
Background
According to the design of manufacturers and the specification of product use, the generator stator cold water system is in continuous small-flow water replenishing overflow, continuous water replenishing can ensure that the quality of cooling water meets the requirements, and possible water leakage loss in the system can be compensated. And the generator stator cooling water is cut off water and can trigger the generator to trip and protect the action, and the volume of the generator stator cooling water tank is very small and is only 0.3m3(taking the million units of Siemens technology as an example above), if a continuous water replenishing overflow mode is not adopted, the reaction time left for operators when the working medium leaks in the system is short, and the safety risk coefficient of the unit is high. In the prior art, a generator stator cold water system adopts high-quality demineralized water for continuous small-flow water supplement, the continuous water supplement amount is generally 100-200L/H, equivalent overflow water can be generated during water supplement, and the overflow water is directly discharged without being recovered, so that great economic waste and environmental pollution can be caused. (the price of the desalted water is 9 yuan/ton, about 1700 tons of overflow water of each unit is produced each year, and 15300 yuan is directly lost each unit each year). In addition, the pressure of the demineralized water fluctuates when the water consumption of other users is large, and the condition that the pressure is lower than the minimum pressure required by the stator cooling water replenishing is often generated. Adopt other transformation thinking, still can not thoroughly guarantee water tank water level safety if increase liquid level switch and moisturizing solenoid valve.
In view of the above, there is a need for a new overflow water recovery system that solves or at least alleviates the above technical drawbacks.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an overflow water recovery system aims at solving prior art well overflow water and directly discharges, causes economic loss and environmental pollution's technical problem.
In order to achieve the above object, the utility model provides an overflow water recovery system, include:
the system comprises a generator stator cooling water tank, a sewage draining pit and a first pipeline communicated with the generator stator cooling water tank and the sewage draining pit;
the steam turbine shaft seal heating device comprises a steam turbine shaft seal, a shaft seal heater and a second pipeline which is communicated with the steam turbine shaft seal and the shaft seal heater;
and the third pipeline is communicated with the first pipeline and the second pipeline, the interface of the first pipeline and the sewage draining pit is a first interface, the interface of the first pipeline and the third pipeline is a second interface, and a first valve is arranged between the first interface and the second interface.
Preferably, an interface between the second pipeline and the third pipeline is a third interface, and a second valve is arranged between the second interface and the third interface.
Preferably, the third pipeline comprises a U-shaped section and an extension section, the U-shaped section comprises a first section, a second section and a third section which are sequentially communicated, the first section is communicated with the first pipeline, the third section is communicated with the second pipeline, and the extension section is communicated with the sewage draining pit and the first section.
Preferably, the third section is provided with the second valve.
Preferably, the pipe diameter of the first pipeline is the same as the pipe diameter of the third pipeline.
Preferably, the overflow water recovery system further comprises a condenser and a fourth pipeline, and the shaft seal heater is communicated with the condenser through the fourth pipeline.
Preferably, the drain pit is a trench.
Preferably, the overflow water recovery system further comprises a fan in communication with the shaft seal heater.
Preferably, the overflow water recovery system further comprises a small shaft seal in communication with the shaft seal heater.
Preferably, the overflow water recovery system further comprises a drain pipe in communication with the shaft seal heater.
In the technical scheme of the utility model, the overflow water recovery system comprises a generator stator cooling water tank, a sewage draining pit and a first pipeline communicated with the generator stator cooling water tank and the sewage draining pit; the steam turbine shaft seal heater is communicated with the steam turbine shaft seal; and the third pipeline is communicated with the first pipeline and the second pipeline, the interface of the first pipeline and the drain pit is a first interface, the interface of the first pipeline and the third pipeline is a second interface, and a first valve is arranged between the first interface and the second interface. Through the third pipeline with first pipeline and second pipeline intercommunication, with be connected generator stator cooling water tank system and these two irrelevant systems of bearing seal system through the third pipeline, and set up first valve between first interface and second interface, first valve is closed to the accessible, make overflow water flow to the bearing seal heater through third pipeline and second pipeline, recycle after retrieving overflow water, this overflow water recovery system has can the water reclamation resource, reduction in production cost and reduction waste water discharge advantage.
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, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic view of an overflow water recovery system according to an embodiment of the present invention;
fig. 2 is a schematic view of a third pipeline according to an embodiment of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 1 | Generator stator |
2 | |
| 3 | Steam turbine shaft seal | 4 | |
| 5 | |
6 | |
| 7 | First pipeline | 8 | Second pipeline |
| 9 | |
10 | First interface |
| 11 | |
12 | |
| 14 | |
15 | |
| 16 | |
17 | Small |
| 18 | Drain |
91 | |
| 92 | |
93 | |
| 94 | |
20 | Overflow |
| 30 | |
40 | Generator stator cooling water system |
The purpose of the present invention, its functional features and advantages will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, 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.
It should be noted that all the directional indicators (such as the upper and lower … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
Moreover, the technical solutions of the present invention between the various embodiments can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are combined and contradictory or cannot be realized, it should be considered that the combination of the technical solutions does not exist, and the present invention is not within the protection scope of the present invention.
It should be noted that the shaft seal heater in the shaft seal system 30 is a device for recovering shaft seal leakage steam and heating condensed water by using heat thereof, and can reduce energy loss and improve heat efficiency of the unit. When the steam turbine adopts the internal-discharge type shaft seal system 30, a shaft seal heater is generally arranged for heating condensed water or demineralized water and recovering shaft seal leakage steam, thereby reducing shaft seal leakage steam, improving the vacuum and heat loss of a unit and improving the environmental conditions of a workshop. In the prior art, the shaft seal system 30 and the generator stator cooling water tank system are two completely unrelated systems.
Referring to fig. 1, the present invention provides an overflow water recovery system 20, including:
the generator stator cooling water tank 1, the sewage draining pit 2 and a first pipeline 7 for communicating the generator stator cooling water tank 1 and the sewage draining pit 2;
the steam turbine shaft seal heating device comprises a steam turbine shaft seal 3, a shaft seal heating device 4 and a second pipeline 8 for communicating the steam turbine shaft seal 3 and the shaft seal heating device 4;
and the third pipeline 9 is communicated with the first pipeline 7 and the second pipeline 8, the interface of the first pipeline 7 and the sewage draining pit 2 is a first interface 10, the interface of the first pipeline 7 and the third pipeline 9 is a second interface 11, and a first valve 5 is arranged between the first interface 10 and the second interface 11.
In the above embodiment, the first pipeline 7 and the second pipeline 8 are communicated through the third pipeline 9, so as to connect two unrelated systems, namely the generator stator cooling water tank system and the shaft seal system 30, through the third pipeline 9, and the first valve 5 is arranged between the first interface 10 and the second interface 11, the first valve 5 can be closed, so that the overflow water flows to the shaft seal heater 4 through the third pipeline 9 and the second pipeline 8, and the overflow water is recycled after being recovered.
According to a preferred embodiment of the present invention, the interface between the second pipeline 8 and the third pipeline 9 is a third interface 12, and a second valve 6 is arranged between the second interface 11 and the third interface 12. The second valve 6 can be closed when overflow water does not need to be recovered or is inconvenient to recover, the second valve 6 is arranged to mainly play a role in insurance, and the overflow water is prevented from being recovered by mistakenly opening the first valve 5 under the condition that the overflow water does not need to be recovered. The overflow water of the stator cooling water system can be freely and selectively recycled or discharged through valve control. The first valve 5 and the second valve 6 may be manual valves or electric valves (e.g., electronic expansion valves).
Referring to fig. 2, the third pipeline 9 includes a U-shaped section and an extended section 94, the height of the U-shaped section is calculated according to the height of the generator stator cooling water tank, the U-shaped section includes a first section 91, a second section 92 and a third section 93 which are sequentially communicated, the first section 91 is communicated with the first pipeline 7, the third section 93 is communicated with the second pipeline 8, and the extended section 94 is communicated with the sewage draining pit 2 and the first section 91. The U-shaped section is designed to form water sealing sections at two ends of the U-shaped section, so that the steam leakage phenomenon between systems is prevented. The height of the U-shaped water seal pipe section is determined by calculation according to the negative pressure of the shaft seal system 30, so that the phenomenon of steam leakage among systems is avoided. This embodiment combines originally two unrelated systems together ingeniously by only adding a third pipeline 9 and a first valve 5 to the original system, forming a new overflow water recovery system 20, the design is exquisite, and the transformation cost is low.
Referring to fig. 2, the third section 93 is provided with a second valve 6, the second valve 6 is provided on the third section 93, and the second valve 6 is used for controlling to disconnect or connect the shaft seal system 30 and the generator stator cooling water system 40. The design can not influence the overflow water to enter the drain pit 2 because of the closing of the second valve 6, and can freely control whether to recover the overflow water.
In addition, the pipe diameter of the first pipeline 7 is the same as that of the third pipeline 9, and the pipe diameter of the pipeline through which the overflow water flows is the same, so that the pressure generated by the change of the pipe diameter can not influence the flow of the overflow water.
Referring to fig. 1, the overflow water recovery system 20 further includes a condenser 15 and a fourth pipeline 14, and the shaft seal heater 4 and the condenser 15 are communicated through the fourth pipeline 14. The condenser 15 is a heat exchanger for condensing the exhaust steam into water, and overflow steam from the shaft seal heater 4 enters the condenser 15 for condensation and recovery, and then is recycled.
Furthermore, the sewage draining pit 2 is a trench, and overflow water is drained into the trench conveniently and quickly.
Further, the overflow water recovery system 20 further comprises a fan 16 communicated with the shaft seal heater 4, the number of the fans 16 can be two, and the main purpose of the fan 16 is to discharge non-condensable gas in the shaft seal heater 4.
In addition, the overflow water recovery system 20 further comprises a small shaft seal 17 communicated with the shaft seal heater 4, the shaft seal system 30 comprises a steam turbine shaft seal 3 and the small shaft seal 17, the shaft seal heater 4 is respectively communicated with the steam turbine shaft seal 3 and the small shaft seal 17, shaft seal leakage can be recovered, and condensate water is heated by using heat of the shaft seal leakage, so that shaft seal leakage and heat loss are reduced, and environmental conditions of a workshop are improved.
In addition, the overflow water recovery system 20 further includes a drain pipe 18 in communication with the shaft seal heater 4, and the drain pipe 18 may be a low level drain header for draining excess water in the shaft seal heater 4.
The above is only the preferred embodiment of the present invention, not limiting the patent scope of the present invention, all of which are under the technical conception of the present invention, the equivalent structure transformation made by the contents of the specification and the drawings is utilized, or the direct/indirect application is included in other related technical fields.
Claims (10)
1. An overflow water recovery system, comprising:
the system comprises a generator stator cooling water tank, a sewage draining pit and a first pipeline communicated with the generator stator cooling water tank and the sewage draining pit;
the steam turbine shaft seal heating device comprises a steam turbine shaft seal, a shaft seal heater and a second pipeline which is communicated with the steam turbine shaft seal and the shaft seal heater;
and the third pipeline is communicated with the first pipeline and the second pipeline, the interface of the first pipeline and the sewage draining pit is a first interface, the interface of the first pipeline and the third pipeline is a second interface, and a first valve is arranged between the first interface and the second interface.
2. The overflow water recovery system of claim 1, wherein the interface between the second conduit and the third conduit is a third interface, and a second valve is disposed between the second interface and the third interface.
3. The overflow water recovery system of claim 2, wherein the third pipeline comprises a U-shaped section and an extension section, the U-shaped section comprises a first section, a second section and a third section which are sequentially communicated, the first section is communicated with the first pipeline, the third section is communicated with the second pipeline, and the extension section is communicated with the sewage draining pit and the first section.
4. The overflow water recovery system of claim 3, wherein the third section is provided with the second valve.
5. The overflow water recovery system of any one of claims 1-4, wherein the first conduit has the same tube diameter as the third conduit.
6. The overflow water recovery system of any one of claims 1-4, further comprising a condenser and a fourth conduit, wherein the shaft seal heater is in communication with the condenser via the fourth conduit.
7. The overflow water recovery system of any one of claims 1-4, wherein the drainage pit is a trench.
8. The overflow water recovery system of any of claims 1-4, further comprising a fan in communication with the shaft seal heater.
9. The overflow water recovery system of any of claims 1-4, further comprising a small machine shaft seal in communication with the shaft seal heater.
10. The overflow water recovery system of any one of claims 1-4, further comprising a drain in communication with the shaft seal heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921135612.6U CN210239761U (en) | 2019-07-18 | 2019-07-18 | Overflow water recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921135612.6U CN210239761U (en) | 2019-07-18 | 2019-07-18 | Overflow water recovery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210239761U true CN210239761U (en) | 2020-04-03 |
Family
ID=69991966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921135612.6U Active CN210239761U (en) | 2019-07-18 | 2019-07-18 | Overflow water recovery system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210239761U (en) |
-
2019
- 2019-07-18 CN CN201921135612.6U patent/CN210239761U/en active Active
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