CN219347402U - Steam turbine vacuum system convenient to overhaul - Google Patents
Steam turbine vacuum system convenient to overhaul Download PDFInfo
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- CN219347402U CN219347402U CN202223202581.6U CN202223202581U CN219347402U CN 219347402 U CN219347402 U CN 219347402U CN 202223202581 U CN202223202581 U CN 202223202581U CN 219347402 U CN219347402 U CN 219347402U
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Abstract
The utility model discloses a steam turbine vacuum system convenient to overhaul, which comprises a condenser and a vacuum generating system A, wherein an electric valve is arranged on a main pipeline, the vacuum generating system A comprises a vacuum pump and a steam-water separator, the vacuum pump is connected with a sewage pit through a first drain pipe, a first overhaul pipe is arranged on the vacuum pump, a second overhaul pipe is arranged on the steam-water separator, the first overhaul pipe and the second overhaul pipe are respectively communicated with the first drain pipe, the steam-water separator is connected with the upstream end of the vacuum pump through a circulating pipeline, a plate heat exchanger is arranged on the circulating pipeline, a second drain pipe, a water supply pipe and a first exhaust pipe are also arranged on the steam-water separator, and the second drain pipe is communicated with the first drain pipe. The utility model can discharge the steam and water in the vacuum equipment through the overhaul pipe, thereby avoiding further damage of the vacuum equipment caused by the fact that the steam and water with excessive temperature remain in the vacuum equipment, and facilitating overhaul.
Description
Technical Field
The utility model relates to the technical field of vacuumizing systems, in particular to a steam turbine vacuum system convenient to overhaul.
Background
In the prior art, the steam turbine condenser has the functions of establishing and maintaining high vacuum at a steam turbine steam discharge port, enabling water condensed by steam turbine steam discharge to serve as boiler water supply to form a complete cycle, and enabling the condenser to maintain higher vacuum degree through heat exchange with circulating water. In the normal operation process of the equipment, in order to maintain the negative pressure in the condenser, a water ring type vacuum pump is generally used for removing non-condensed gas in the condenser.
However, due to the fact that the vacuum system is huge, when the vacuum pump or the steam-water separator is damaged, steam or condensed water in the vacuum pump or the steam-water separator cannot be discharged in time, so that the steam water stays in the vacuum pump or the steam-water separator for a long time, equipment such as the vacuum pump cannot be cooled in time through the circulating water pipe, maintenance is inconvenient, the vacuum system is damaged further, and equipment maintenance cost is increased.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide a steam turbine vacuum system convenient to overhaul, so as to solve the technical problems that the steam water stays in a vacuum pump or a steam-water separator for a long time and equipment maintenance is inconvenient, and the vacuum system is further damaged.
The aim of the utility model is realized by the following technical scheme:
the utility model provides a steam turbine vacuum system convenient to overhaul, includes condenser and vacuum generating system A who is connected with the condenser through the trunk line, be equipped with electric valve on the trunk line, vacuum generating system A includes the vacuum pump and the catch water that is connected with the vacuum pump low reaches end, there is the blowdown hole through first drain pipe connection on the vacuum pump, be equipped with blowdown manual door on the first drain pipe, be equipped with first maintenance pipe on the vacuum pump, be equipped with the second maintenance pipe on the catch water, first maintenance pipe and second maintenance pipe communicate with first drain pipe respectively, all are equipped with the stop valve on first maintenance pipe and the second maintenance pipe, and the catch water passes through the circulation pipeline and is connected with the upstream end of vacuum pump, be equipped with plate heat exchanger on the circulation pipeline, still be equipped with second drain pipe, water supply pipe and first blast pipe on the catch water, second drain pipe and first drain pipe intercommunication.
In the above summary, further, an air pipe for balancing the internal pressure of the condenser is provided on the condenser, and a vacuum breaking valve is provided on the air pipe, and the vacuum breaking valve includes a vacuum manual door and a vacuum electric door.
In the above summary, further, two air delivery pipes connected to the main pipe are provided on the condenser, and air extraction manual doors are provided on the two air delivery pipes.
In the above summary, further, the main pipe is further provided with a pneumatic valve, a filter screen and a check valve, and the filter screen is disposed at an upstream end of the vacuum pump.
In the above summary, further, a second exhaust pipe is further disposed on the main pipe.
In the above summary, further, the vacuum pump is provided with an ejector.
In the above summary, further, the first service pipe and the second service pipe have an inner diameter larger than an inner diameter of the second drain pipe.
In the above summary of the utility model, further, the water supply pipe is provided with a switch valve, and the switch valve includes an electromagnetic valve and a manual valve which are arranged on the water supply pipe in parallel.
In the above summary, further, the water supply pipe is further provided with a pressure reducing valve and a plug valve.
In the above summary, further, a vacuum generating system B is further connected to the main pipe.
The beneficial effects of the utility model are as follows:
according to the utility model, the overhaul pipes are arranged on the vacuum pump and the steam-water separator, when the vacuum pump and the steam-water separator are damaged, steam and water in the vacuum pump and the steam-water separator can be quickly and timely discharged into the sewage pit through the overhaul pipes, so that further damage of the vacuum equipment caused by the fact that steam and water with excessive temperature remain in the vacuum equipment is avoided, and the moisture in the vacuum pump and the steam-water separator are timely discharged to be convenient to overhaul, meanwhile, the maintenance cost is saved, and the operation stability of a vacuum system is improved;
and secondly, the water in the steam-water separator is condensed through the plate heat exchanger, the condensed water cools the vacuum pump, so that the damage of the vacuum pump caused by overhigh temperature due to the continuous use is prevented, and the waste of high-quality water resources can be avoided through the circulating pipe.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
in the figure, a 1-condenser, a 2-main pipeline, a 3-vacuum generating system A, a 4-vacuum pump, a 5-steam-water separator, a 51-first exhaust pipe, a 6-electric valve, a 7-pneumatic valve, an 8-check valve, a 9-first exhaust pipe, a 91-blowdown manual door, a 10-second exhaust pipe, a 11-circulating pipeline, a 12-first maintenance pipe, a 13-plate heat exchanger, a 14-electromagnetic valve, a 15-manual valve, a 16-water supply pipe, a 17-air pipe, a 171-vacuum manual door, a 172-vacuum electric door, a 18-second exhaust pipe, a 19-air supply pipe, a 20-pressure reducing valve, a 21-second maintenance pipe and a 22-vacuum generating system B.
Detailed Description
Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict.
Examples:
in the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element in question must be provided with a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Referring to fig. 1, a steam turbine vacuum system convenient to overhaul comprises a condenser 1 and a vacuum generation system A3 connected with the condenser 1 through a main pipeline 2, wherein an electric valve 6 is arranged on the main pipeline 2, the electric valve 6 is used for controlling the flow of gas in the main pipeline 2, the vacuum generation system A3 comprises a vacuum pump 4 and a steam-water separator 5 connected with the downstream end of the vacuum pump 4, a drain pit is connected on the vacuum pump 4 through a first drain pipe 9, redundant water in the vacuum pump 4 and the steam-water separator 5 is discharged into the drain pit through the first drain pipe 9, a drain manual door 91 is arranged on the first drain pipe 9, a first overhaul pipe 12 is arranged on the vacuum pump 4, a second overhaul pipe 21 is arranged on the steam-water separator 5, the first overhaul pipe 12 and the second overhaul pipe 21 are respectively communicated with the first drain pipe 9, stop valves are respectively arranged on the first overhaul pipe 12 and the second overhaul pipe 21, the steam-water separator 5 is connected with the upstream end of the vacuum pump 4 through a circulation pipeline 11, and a plate heat exchanger 13 is arranged on the circulation pipeline 11. Specifically, part of the high-temperature liquid in the steam-water separator 5 flows through the plate heat exchanger 13 through the circulating pipeline 11, the plate heat exchanger 13 cools the high-temperature liquid, and the cooled liquid cools the vacuum pump 4 through the circulating pipeline 11, because the vacuum pump 4 is in a working state for a long time, the hot air in the condenser 1 is always extracted, so that the internal temperature of the vacuum pump 4 is higher, and if the temperature of the vacuum pump 4 is not timely lowered, the vacuum pump 4 is easily damaged.
The steam-water separator 5 is further provided with a second drain pipe 10, a water supply pipe 16 and a first exhaust pipe 51, and the second drain pipe 10 is communicated with the first drain pipe 9. The first maintenance pipe 12 and the second maintenance pipe 21 are normally in a closed state when the vacuum generating system A3 works, and the first maintenance pipe 12 and the second maintenance pipe 21 are opened when maintenance is needed, the second drain pipe 10 is used for draining water when equipment works, and the first exhaust pipe 51 is used for exhausting steam separated in the steam-water separator 5.
In the above embodiment, preferably, the condenser 1 is provided with an air pipe 17 for balancing the internal pressure of the condenser 1, and the air pipe 17 is provided with a vacuum break valve, and the vacuum break valve includes a vacuum manual door 171 and a vacuum electric door 172. Specifically, when the condenser 1 is in normal operation, the air pipe 17 is in a closed state, and the inside of the condenser 1 is in a negative pressure state through the vacuum generating system A3; when the condenser 1 is damaged and needs to be overhauled or stops working, the negative pressure formed in the condenser 1 due to working is timely discharged, at the moment, the vacuum breaking valve on the air pipe 17 is opened, the commonly used vacuum breaking valve is the vacuum electric door 172, the vacuum manual door 171 is used as a standby, and when special conditions such as power failure occur, the vacuum manual door 171 can be used at the moment.
In the above embodiment, preferably, two air delivery pipes 19 communicating with the main pipe 2 are provided on the condenser 1, and air extraction manual doors are provided on the two air delivery pipes 19. Specifically, in order to improve the working efficiency, two air delivery pipes 19 communicated with the main pipeline 2 are arranged on the condenser 1, the two air delivery pipes 19 can work simultaneously, or only one air delivery pipe 19 can be started to work, and the other air delivery pipe 19 can be used for standby.
In the above embodiment, preferably, the main pipe 2 is further provided with a pneumatic valve 7, a filter screen, and a check valve 3, and the filter screen is disposed at an upstream end of the vacuum pump 4. The pneumatic valve 7 is used as a standby of the electric valve 6, the filter screen is used for filtering impurities in the main pipeline 2, and the check valve 3 can prevent reverse flow during vacuumizing and improve working efficiency.
In the above embodiment, preferably, the main pipe 2 is further provided with a second exhaust pipe 18. The second exhaust pipe 18 mainly functions to exhaust the atmosphere.
In the above embodiment, it is preferable that the vacuum pump 4 is provided with an ejector. When the gas in the vacuum pump 4 reaches a certain value, the gas in the vacuum pump can be discharged through the ejector.
In the above embodiment, it is preferable that the inner diameters of the first service pipe 12 and the second service pipe 21 are larger than the inner diameter of the second drain pipe 10. Specifically, when the vacuum generating system A3 is in the operating state, the first service pipe 12 and the second service pipe 21 are in the closed state; when the vacuum generating system A3 needs to be overhauled, high-temperature gas and liquid in the vacuum pump 4 and the steam-water separator 5 need to be discharged as soon as possible, steam water is prevented from staying in the vacuum pump 4 or the steam-water separator 5 for a long time, equipment such as the vacuum pump 4 cannot be timely cooled through a circulating water pipe due to equipment damage, and the vacuum system is further damaged, so that when the vacuum generating system stops working, the gas and the liquid in the equipment need to be rapidly discharged, and at the moment, the stop valves on the first overhauling pipe 12 and the second overhauling pipe 21 can be opened, and because the inner diameters of the first overhauling pipe 12 and the second overhauling pipe 21 are larger than the inner diameter of the second water discharging pipe 10 used for discharging water when the vacuum pump 4 and the steam-water separator 5 work at ordinary times, the first overhauling pipe 12 and the second overhauling pipe 21 can rapidly discharge the water in the equipment in time, so that workers can overhaul conveniently.
In the above embodiment, it is preferable that the water supply pipe 16 is provided with a switch valve, and the switch valve includes a solenoid valve 14 and a manual valve 15 that are disposed in parallel on the water supply pipe 16. Specifically, the switch valve commonly used on the water supply pipe 16 in operation is the electromagnetic valve 14, which can automatically add water to the steam-water separator 5, because the steam-water separator 5 needs to keep a certain water level in the water separator 5 due to long-time operation when in operation, the water needs to be added to the steam-water separator 5 at regular time; the manual valve 15 is used for avoiding the situation that the electromagnetic valve 14 cannot be opened or closed when power failure occurs, and the water supply pipe 16 can only be opened through the manual valve 15. The inlet of the water supply pipe 16 can be connected in parallel with condensed water or cooling water, and the condensed water is used for standby.
In the above embodiment, the water supply pipe 16 is preferably further provided with a pressure reducing valve 20 and a plug valve.
In the above embodiment, preferably, the main pipe 2 is further connected to a vacuum generating system B22. The vacuum generating system B22 is used as a standby of the vacuum generating system A3, and when the vacuum generating system A3 cannot work, the vacuum generating system B22 can be started.
The foregoing examples merely illustrate specific embodiments of the utility model, which are described in greater detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model.
Claims (10)
1. A steam turbine vacuum system convenient to overhaul, which comprises a condenser (1) and a vacuum generating system A (3) connected with the condenser (1) through a main pipeline (2), it is characterized in that the main pipeline (2) is provided with an electric valve (6), the vacuum generating system A (3) comprises a vacuum pump (4) and a steam-water separator (5) connected with the downstream end of the vacuum pump (4), the vacuum pump (4) is connected with a sewage drain pit through a first drain pipe (9), a sewage disposal manual door (91) is arranged on the first drain pipe (9), a first overhaul pipe (12) is arranged on the vacuum pump (4), a second overhaul pipe (21) is arranged on the steam-water separator, the first overhaul pipe (12) and the second overhaul pipe (21) are respectively communicated with the first drain pipe (9), stop valves are arranged on the first overhaul pipe (12) and the second overhaul pipe (21), the steam-water separator (5) is connected with the upstream end of the vacuum pump (4) through a circulating pipeline (11), the circulating pipeline (11) is provided with a plate heat exchanger (13), the steam-water separator (5) is also provided with a second drain pipe (10), a water supply pipe (16) and a first exhaust pipe (51), the second drain pipe (10) is communicated with the first drain pipe (9).
2. The steam turbine vacuum system convenient to overhaul according to claim 1, wherein an air pipe (17) for balancing the internal pressure of the condenser (1) is arranged on the condenser (1), a vacuum breaking valve is arranged on the air pipe (17), and the vacuum breaking valve comprises a vacuum manual door (171) and a vacuum electric door (172).
3. The steam turbine vacuum system convenient to overhaul according to claim 2, wherein two air delivery pipes (19) communicated with the main pipeline (2) are arranged on the condenser (1), and air extraction manual doors are arranged on the two air delivery pipes (19).
4. A turbine vacuum system for easy maintenance according to claim 3, characterized in that the main pipe (2) is further provided with a pneumatic valve (7), a filter screen and a non-return valve (8), the filter screen being placed at the upstream end of the vacuum pump (4).
5. A steam turbine vacuum system for easy access according to claim 4, wherein the main pipe (2) is further provided with a second exhaust pipe (18).
6. The steam turbine vacuum system for easy maintenance according to claim 4, wherein the ejector is provided on the vacuum pump (4).
7. A steam turbine vacuum system for easy access according to claim 1, wherein the first access pipe (12) and the second access pipe (21) have an inner diameter larger than the inner diameter of the second drain pipe (10).
8. The steam turbine vacuum system convenient to overhaul as claimed in claim 1, wherein the water supply pipe (16) is provided with a switch valve, and the switch valve comprises an electromagnetic valve (14) and a manual valve (15) which are arranged on the water supply pipe (16) in parallel.
9. The steam turbine vacuum system for easy maintenance according to claim 8, wherein the water supply pipe (16) is further provided with a pressure reducing valve (20) and a plug valve.
10. A steam turbine vacuum system for easy access according to any one of claims 1-9, wherein the main pipe (2) is further connected with a vacuum generating system B (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223202581.6U CN219347402U (en) | 2022-11-30 | 2022-11-30 | Steam turbine vacuum system convenient to overhaul |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223202581.6U CN219347402U (en) | 2022-11-30 | 2022-11-30 | Steam turbine vacuum system convenient to overhaul |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219347402U true CN219347402U (en) | 2023-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223202581.6U Active CN219347402U (en) | 2022-11-30 | 2022-11-30 | Steam turbine vacuum system convenient to overhaul |
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| Country | Link |
|---|---|
| CN (1) | CN219347402U (en) |
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2022
- 2022-11-30 CN CN202223202581.6U patent/CN219347402U/en active Active
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