CN221444880U - A drainage recovery system for bearing seal heater - Google Patents
A drainage recovery system for bearing seal heater Download PDFInfo
- Publication number
- CN221444880U CN221444880U CN202323146661.9U CN202323146661U CN221444880U CN 221444880 U CN221444880 U CN 221444880U CN 202323146661 U CN202323146661 U CN 202323146661U CN 221444880 U CN221444880 U CN 221444880U
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- Prior art keywords
- shaft seal
- water
- steam
- seal heater
- pipeline
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- 238000011084 recovery Methods 0.000 title claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 84
- 238000005086 pumping Methods 0.000 claims abstract description 4
- 230000002209 hydrophobic effect Effects 0.000 claims description 5
- 238000004064 recycling Methods 0.000 claims description 5
- 238000007667 floating Methods 0.000 claims description 4
- 239000002699 waste material Substances 0.000 abstract description 6
- 239000003657 drainage water Substances 0.000 abstract 1
- 238000007599 discharging Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The utility model discloses a drainage recovery system for a shaft seal heater, which comprises a shaft seal heater and a condenser, wherein the upper side of the shaft seal heater is connected with a shaft seal fan and a shaft seal return steam through pipelines; a low-level water tank and a steam trap which are used for draining water by utilizing high vacuum pressure difference of the steam condenser and automatically sucking the drain water of the shaft seal heater into the steam condenser are connected between the drain pipeline at the bottom side of the shaft seal heater and the steam condenser through pipelines; the low-level water tank is also connected with a water linkage water drain pipeline and a water pumping and draining pipeline through pipelines, and two ends of the steam trap are respectively connected with a first stop valve for controlling the on-off of the pipelines; the steam trap is adopted to replace a U-shaped pipe multi-stage water seal, so that the system is simpler and more reliable, the problem that air and steam leak into the condenser is completely solved, the normal working states of the shaft seal heater and the condenser are ensured, and the steam trap is smooth; meanwhile, the drainage water can be recycled through the low-level water tank, so that the condensed water can be effectively recycled, and the waste of water resources is reduced.
Description
[ Field of technology ]
The utility model relates to a hydrophobic recovery technology in papermaking production, in particular to a hydrophobic recovery system for a shaft seal heater.
[ Background Art ]
In paper making, the shaft seal heater is a heat exchanger connected in series in the condensate system and is used for cooling the gas-gas mixture from the shaft seal by condensate water, then the fan arranged on the top of the shaft seal heater is used for discharging non-condensed steam and air, and the pressure of the steam seal leakage system is maintained to be slightly lower than the atmospheric pressure, so that the steam can be prevented from escaping from each steam seal section, and the steam can be extracted and condensed. The shaft seal heater not only recovers working media, utilizes steam leakage energy, improves the economy of a thermodynamic system, but also separates air, ensures the normal operation of the shaft seal system, and prevents steam from leaking out of the end steam seal to pollute the environment and a lubricating oil system.
The drain mode of the shaft seal heater is generally divided into a water seal type and a low-level water tank type, wherein the water seal type is divided into a multi-stage water seal and a single-stage water seal, and the low-level water tank type is divided into a drain type and an inner floating ball type. The traditional shaft seal dewatering system adopts a multi-stage water seal as a dewatering sealing device, the vacuum environment and extremely low working pressure of a condenser are considered in the design of the traditional shaft seal heater dewatering system, and a U-shaped pipe multi-stage water seal is generally selected for steam-water isolation, so that the function of maintaining the dewatering water level of the shaft seal heater is to protect vacuum, and once the water in the multi-stage water seal is filled, the water level of the multi-stage water seal is basically maintained unchanged. The seal heater adopts multi-stage water seal drainage, once the water level cannot be maintained and the vacuum of the direct condenser is affected, when the multi-stage water seal pipe loses water, the steam side of the seal heater is directly communicated with the condenser, so that the steam side of the seal heater is directly communicated with the atmosphere through a shaft exhaust fan, and a non-condensable steam-gas mixture in the seal heater is directly discharged into the condenser; the water level of the shaft seal heater is abnormally increased because the shaft seal heater is not smooth in drainage due to the fault or improper adjustment of the multistage water seal outlet valve.
At present, the drain water of the shaft seal heater is directly recycled to the condenser, the vacuum of the condenser is far lower than the internal pressure of the shaft seal heater, and once the water seal of the water conveying pipe section of the shaft is lost, the vacuum of the condenser is quickly reduced. Moreover, the drain of the shaft seal heater is designed to return to the condensing hot water well, because the U-shaped drain pipe and the drain of the low-pressure heater are gathered together, the water seal device in the middle prevents vacuum from entering the condenser to endanger the safe operation of the unit, so that the drain mode is always adopted for discharging, the resource waste exists, and the water resource waste also exists in the aspect of environmental benefit.
[ utility model ]
The utility model provides a drainage recovery system for a shaft seal heater, which is used for effectively recovering condensed water, reducing waste of water resources and effectively solving the problem that air and steam leak into a condenser.
The technical scheme adopted for solving the technical problems is as follows:
The drainage recycling system for the shaft seal heater is used for recycling drainage and comprises the shaft seal heater and a condenser, wherein the upper side of the shaft seal heater is connected with a shaft seal fan and shaft seal return steam through pipelines;
A low-level water tank and a steam trap which are used for draining water by utilizing high vacuum pressure difference of the steam condenser and automatically sucking the drain water of the shaft seal heater into the steam condenser are connected between the drain pipeline at the bottom side of the shaft seal heater and the steam condenser through pipelines;
The low-level water tank is also connected with a water linkage water drain pipeline and a water pumping and draining pipeline through pipelines, and two ends of the steam trap are respectively connected with a first stop valve for controlling the on-off of the pipelines.
Preferably, the steam trap is a free floating ball steam trap.
Preferably, the input end of the low-level water tank is further provided with a second stop valve for controlling the on-off of the pipeline, a drain pipeline at the bottom side of the shaft seal heater is further branched and connected with a drain branch pipeline which is convenient for drain water in the shaft seal heater to be directly discharged into a hot water well, and the drain branch pipeline is provided with a third stop valve for controlling the on-off of the pipeline.
Preferably, the bottom side of the low-level water tank is also connected with a drain pipe, and the drain pipe is provided with a drain valve for controlling the on-off of the pipeline.
The beneficial effects of the utility model are as follows:
The steam trap is adopted to replace a U-shaped pipe multi-stage water seal, so that the system is simpler and more reliable, the problem that air and steam leak into the condenser is completely solved, the normal working states of the shaft seal heater and the condenser are ensured, and the steam trap is smooth; meanwhile, the condensed water can be effectively recovered through the low-level water tank, and the waste of water resources is reduced.
[ Description of the drawings ]
Fig. 1 is a schematic diagram of the system architecture of the present utility model.
[ Detailed description ] of the invention
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. In the description of the present utility model, it should be noted that, the azimuth or positional relationship indicated by the terms "front", "rear", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship in which the inventive product is conventionally put in use, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore, should not be construed as limiting the present utility model.
In the description of the present utility model, it should be understood that the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or as implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", "a third", etc., may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
A drainage recovery system for a shaft seal heater is shown in figure 1 and used for recycling drainage, and comprises a shaft seal heater 1 and a condenser 2, wherein the upper side of the shaft seal heater 1 is connected with a shaft seal fan 3 and a shaft seal return steam 4 through pipelines; a low-level water tank 6 and a steam trap 7 which are used for draining water by utilizing high vacuum pressure difference of the steam condenser and automatically sucking the drain water of the shaft seal heater into the steam condenser are connected between a drain pipeline 5 at the bottom side of the shaft seal heater 1 and the steam condenser 2 through pipelines; the low-level water tank 6 is also connected with a water linkage water drain pipeline 8 and a water pumping and draining pipeline 9 through pipelines, and two ends of the steam trap 7 are respectively connected with a first stop valve 10 for controlling the on-off of the pipelines; wherein the steam trap 7 is a free floating ball steam trap.
Continuing as shown in fig. 1, the input end of the low-level water tank 6 is further provided with a second stop valve 11 for controlling the on-off of a pipeline, a drainage branch pipeline 12 which is convenient for directly discharging drainage in the shaft seal heater into a hot water well is further branched and connected between the drainage pipeline at the bottom side of the shaft seal heater 1 and the second stop valve 11, a third stop valve 13 for controlling the on-off of the pipeline is arranged on the drainage branch pipeline 12, the bottom side of the low-level water tank 6 is further connected with a drain pipe 14, and a drain valve 15 for controlling the on-off of the pipeline is arranged on the drain pipe.
The steam trap is adopted to replace a U-shaped pipe multi-stage water seal, so that the steam-water isolation performance of the system is better, the heat exchange efficiency of the shaft seal heater is improved, the occupied space of the original U-shaped pipe is reduced, the metal corrosion caused by residual water accumulation in the water seal pipe after the original system is stopped is eliminated, the sealing is tight, the maintenance is convenient, and the reliability and the stability of the system are greatly improved; the system is simpler and more reliable, the problem that air and steam leak into the condenser is completely solved, the normal working states of the shaft seal heater and the condenser are ensured, and the water drainage is smooth; meanwhile, the condensed water can be effectively recovered through the low-level water tank, and the waste of water resources is reduced.
The above embodiments are merely preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model, but all equivalent changes according to the shape, construction and principle of the present utility model are intended to be included in the scope of the present utility model.
Claims (4)
1. The drainage recycling system for the shaft seal heater is used for recycling drainage and is characterized by comprising the shaft seal heater and a condenser, wherein the upper side of the shaft seal heater is connected with a shaft seal fan and a shaft seal return steam through pipelines;
A low-level water tank and a steam trap which are used for draining water by utilizing high vacuum pressure difference of the steam condenser and automatically sucking the drain water of the shaft seal heater into the steam condenser are connected between the drain pipeline at the bottom side of the shaft seal heater and the steam condenser through pipelines;
The low-level water tank is also connected with a water linkage water drain pipeline and a water pumping and draining pipeline through pipelines, and two ends of the steam trap are respectively connected with a first stop valve for controlling the on-off of the pipelines.
2. A hydrophobic recovery system for a shaft seal heater according to claim 1, wherein: the steam trap is a free floating ball steam trap.
3. A hydrophobic recovery system for a shaft seal heater according to claim 1, wherein: the low-level water tank input end is also provided with a second stop valve for controlling the on-off of the pipeline, a drain branch pipeline which is convenient for draining water in the shaft seal heater and directly discharged into the hot water well is further branched and connected between the drain pipeline at the bottom side of the shaft seal heater and the second stop valve, and a third stop valve for controlling the on-off of the pipeline is arranged on the drain branch pipeline.
4. A hydrophobic recovery system for a shaft seal heater according to claim 1, wherein: the bottom side of the low-level water tank is also connected with a drain pipe, and a drain valve for controlling the on-off of the pipeline is arranged on the drain pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323146661.9U CN221444880U (en) | 2023-11-21 | 2023-11-21 | A drainage recovery system for bearing seal heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323146661.9U CN221444880U (en) | 2023-11-21 | 2023-11-21 | A drainage recovery system for bearing seal heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221444880U true CN221444880U (en) | 2024-07-30 |
Family
ID=92067433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323146661.9U Active CN221444880U (en) | 2023-11-21 | 2023-11-21 | A drainage recovery system for bearing seal heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221444880U (en) |
-
2023
- 2023-11-21 CN CN202323146661.9U patent/CN221444880U/en active Active
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