CN210373397U - Hydrophobic recovery plant of steam turbine - Google Patents

Abstract

The utility model discloses a hydrophobic recovery plant of steam turbine belongs to the steam turbine field, aims at providing the hydrophobic recovery plant of a steam turbine, and its technical scheme main points are: the drainage recovery equipment is arranged at a condensate discharging port of the steam turbine, each condensate discharging port is connected with a cache box, the cache boxes are sequentially connected with a recovery pipe and a collection box, and a liquid level meter and a first-level water quality monitor are arranged in the collection boxes. The collecting box is connected with one-level outlet pipe and second grade outlet pipe, and one-level outlet pipe and second grade outlet pipe respectively are connected with one-level suction pump and second grade suction pump, and one-level outlet pipe and second grade outlet pipe terminal amalgamation are connected with tertiary outlet pipe, and tertiary water piping connection has the boiler, and the boiler is connected with the steam turbine. The utility model discloses in retrieving the boiler with steam turbine exhaust comdenstion water, the reheating utilizes, the utility model is suitable for a steam turbine.

Description

Hydrophobic recovery plant of steam turbine

Technical Field

The utility model relates to a steam turbine technical field, more specifically say, it relates to a hydrophobic recovery plant of steam turbine.

Background

The steam turbine is a rotary machine which uses steam to do work, the steam turbine can drive a train, a steamship and a water pump, and can form a steam turbine generator unit with a generator to generate electric energy essential in daily life.

The steam turbine includes a back pressure steam turbine, a back extraction steam turbine, a condensing steam turbine, and the like, wherein most of heat sources contained in exhaust gas of the back pressure steam turbine are utilized by a heat user, so that the thermal efficiency of the back pressure steam turbine device is relatively high. The existing back pressure turbine heats water through a boiler to generate steam, the heat energy of the steam is converted into the kinetic energy of the back pressure turbine, exhaust gas is condensed into water after being utilized in a heat supply system, and the water is discharged to a trench through each exhaust condensing port of a machine body.

The above prior art solutions have the following drawbacks: in the actual use process, the drained water of the steam turbine is discharged into a trench, so that the waste of water resources is caused.

SUMMERY OF THE UTILITY MODEL

To the deficiency that prior art exists, the utility model aims to provide a hydrophobic recovery plant of steam turbine, it can be with the hydrophobic recovery utilization of steam turbine to the boiler.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a hydrophobic recovery plant of steam turbine, hydrophobic recovery plant sets up the row at the steam turbine and congeals the mouth, every it is connected with the recovery tube, all to arrange congeal the mouth and is connected with the collecting box the recovery tube is connected with the collecting box, the inside liquid level appearance that is equipped with of collecting box, liquid level appearance electricity is connected with the PLC controller, the collecting box is connected with one-level outlet pipe and second grade outlet pipe, one-level water piping connection has the one-level suction pump, second grade water piping connection has the second grade suction pump, the one-level suction pump with the second grade suction pump all is connected with the PLC controller electricity, the one-level outlet pipe with the terminal convergence of second grade outlet pipe is connected with tertiary outlet pipe, tertiary.

Through adopting above-mentioned technical scheme, the hot steam that the boiler provided has some condensation to water after being utilized in the steam turbine, and the row through the steam turbine condenses the mouth and discharges, and the hydrophobic recovery plant of the steam turbine that the mouth set up is condensed to the row, in will arranging the condensate water recovery to the boiler that condenses the mouth exhaust, can utilize through the boiler heating once more. The collecting box is arranged in through the recovery tube that the mouth is connected to the drainage earlier to the comdenstion water, and the PLC controller control one-level suction pump is opened and is taken out the comdenstion water in the collecting box through the one-level outlet pipe, and the inside liquid level appearance that is equipped with of collecting box, when the unexpected stop work of one-level suction pump, when the water level risees gradually in the collecting box reaches the settlement height, the PLC controller that the liquid level appearance is connected signals, and control second grade suction pump is opened for ponding in the collecting box is taken out through the second grade outlet pipe. Simultaneously when the comdenstion water that the collecting box was collected is too much, when the one-level outlet pipe can not in time take the internal ponding of collecting box out, when the liquid level appearance detected the water level and reached the dangerous water yield, the PLC controller signals that the liquid level appearance is connected, control second grade suction pump is opened, make the ponding in the collecting box take out through one-level outlet pipe and second grade outlet pipe jointly, one-level outlet pipe and the terminal amalgamation of second grade outlet pipe are connected with tertiary outlet pipe, tertiary outlet pipe carries the comdenstion water recovery that comes with one-level outlet pipe and second grade outlet pipe to the boiler in, the reheating utilizes.

Further, arrange and congeal mouthful and recovery pipe junction and be equipped with the buffer tank, be equipped with perspective mirror on the buffer tank, perspective mirror with buffer tank sealing connection, arrange congeal mouthful with buffer tank junction is connected with the check valve, the buffer tank is kept away from the one end of check valve is equipped with the one-level valve, the one-level valve is connected with the PLC controller.

Through adopting above-mentioned technical scheme, when boiler supply vapor ended, the hydrophobic recovery plant stop work of PLC controller simultaneous control steam turbine, and then make one-level valve also close, still there is the vapor of doing work in the steam turbine to the row condenses mouthful and continues outside discharge comdenstion water, and the buffer memory case can be collected it temporarily. The junction of buffering case and row's mouth of condensing is connected with the check valve, can prevent that buffering case deposit water from flowing back to the steam turbine in, and promptly and probably influence the work of steam turbine. Be equipped with perspective mirror on the buffer tank, the staff can observe the interior water level condition of buffer tank through perspective mirror, when buffer tank water deposit too much, the staff can manually open one-level valve, with buffer tank memory rivers collection incasement.

Furthermore, a first-level water quality monitor is arranged in the collecting box and electrically connected with the PLC, the third-level water outlet pipe is connected with a drainage pipe, the drainage pipe is connected with a deaerator, one end of the deaerator, far away from the drainage pipe, is connected with a fourth-level water outlet pipe, the fourth-level water outlet pipe is connected with a first-level return pipe, and the first-level return pipe is connected with a boiler; the drainage tube with the oxygen-eliminating device junction is provided with the second grade valve, the one end that tertiary outlet pipe is close to the boiler is equipped with tertiary valve, the second grade valve with tertiary valve is connected with the PLC controller electricity.

By adopting the technical scheme, when the first-level water quality monitor detects that the oxygen content of the condensed water in the collecting box is higher and the quality required by the boiler cannot be achieved, the PLC controller controls the three-level valve close to the boiler and opens the two-level valve at the same time. Carry the deaerator with the condensate water in the collecting box in through the drainage tube of connecting the deaerator, through the processing back of deaerator, carry the one-level back flow with the condensate water after the deoxidization in the level four outlet pipe that the deaerator is connected again, the one-level back flow will reach the condensate water of the quality that the boiler required and carry and heat in the boiler and utilize.

Further, the level four outlet pipe is close to the one end of oxygen-eliminating device is equipped with second grade water quality monitor, level four water piping connection has the second grade back flow, the level one back flow with the second grade back flow is parallelly connected, the level one back flow is connected with the level four valve, the second grade back flow is connected with the five-level valve, the drainage tube is connected to the one end that second grade water quality monitor was kept away from to the second grade back flow.

By adopting the technical scheme, when the condensate water treated by the deaerator is introduced into the four-stage water outlet pipe, the secondary water quality monitor detects the condensate water again. When the deaerated condensed water meets the quality required by the boiler, the PLC controller controls the secondary valve to be opened, and the condensed water directly flows back into the boiler for use; when the comdenstion water still is not conform to the quality that the boiler required, the PLC controller control level four valve is opened, carries the comdenstion water in the second grade back flow, and in the comdenstion water circulation that the second grade back flow will not conform to the quality reached the drainage pipe, handles through the oxygen-eliminating device once more, and until the comdenstion water passes through the detection of second grade water quality monitoring ware, the PLC controller control level two valve is opened, and the comdenstion water flows back and uses in the.

Furthermore, the row of oxygen-eliminating device congeals the mouth and is connected with the fifth grade outlet pipe, the fifth grade outlet pipe is connected with the collecting box, the fifth grade outlet pipe is provided with tertiary suction pump.

By adopting the technical scheme, a small amount of condensed water can be generated after the deaerator works, and the deaerator can be pumped into the five-stage water outlet pipe through the three-stage water suction pump and then conveyed into the collection box.

Furthermore, the steam outlet of the steam turbine is connected with a steam exhaust pipe, and the steam exhaust pipe is connected with a hot steam inlet of the deaerator.

By adopting the technical scheme, the deaerator needs hot steam to provide heat energy for working, partial steam in the steam turbine can be discharged from the steam outlet, the steam outlet is connected with the steam exhaust pipe, and the partial steam can be recycled in the deaerator and used as heat source supplement of the deaerator.

Furthermore, the tertiary outlet pipe is close to one-level outlet pipe department is equipped with the one-level filter.

Through adopting above-mentioned technical scheme, the comdenstion water through collecting box and each pipeline probably has impurity, and before the comdenstion water got into the boiler, the one-level filter can be filtered it.

Furthermore, the position, close to the boiler, of the three-stage water outlet pipe is provided with a second-stage filter plate, and the diameter of a filter hole of the first-stage filter plate is 2 times to 4 times that of the filter hole of the second-stage filter plate.

Through adopting above-mentioned technical scheme, the impurity that exists in general condensate water is less impurity, and one-level filter hole is through great, and partial impurity can't filter, sets up the less second grade filter in aperture near boiler department, carries out secondary filter to the condensate water. If only set up the less second grade filter in aperture when tertiary outlet pipe, a small amount of great impurity can cause the second grade filter to block up to influence the boiler and retrieve the comdenstion water.

To sum up, the utility model discloses following beneficial effect has:

1. the effect of complementarily pumping the condensed water in the collecting tank can be achieved through the arrangement of the first-stage water pump and the second-stage water pump;

2. through the arrangement of the buffer tank, the effects of buffering water flow and buffering condensed water can be achieved;

3. through the setting of one-level water quality monitoring ware and oxygen-eliminating device, can play the effect of purifying the water source.

Drawings

FIG. 1 is a schematic view of a hydrophobic recovery apparatus of a steam turbine in the example;

FIG. 2 is a schematic view showing an internal structure of a collection tank of the drain recovery apparatus for embodying the steam turbine in the embodiment;

FIG. 3 is an enlarged view of part A of FIG. 2, which is a schematic diagram of the primary water quality monitor and the level gauge;

fig. 4 is a cross-sectional view of a three-stage outlet pipe for embodying the first stage filter plate and the second stage filter plate in the embodiment.

In the figure, 1, a recovery pipe; 2. a collection box; 21. a liquid level meter; 22. a primary water outlet pipe; 23. a secondary water outlet pipe; 24. a first-stage water pump; 25. a second-stage water pump; 26. a third-stage water outlet pipe; 27. a first-stage water quality monitor; 28. a tertiary valve; 3. a cache box; 31. a perspective mirror; 32. a check valve; 33. a first-stage valve; 4. a drainage tube; 41. a deaerator; 42. a fourth-stage water outlet pipe; 43. a primary return pipe; 44. a secondary valve; 45. a secondary water quality monitor; 46. a secondary return pipe; 47. a four-stage valve; 48. a five-stage valve; 49. a steam exhaust pipe; 5. a fifth-stage water outlet pipe; 51. a third-stage water pump; 6. a first-stage filter plate; 61. a secondary filter plate; 7. a PLC controller; 8. a boiler.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b): for the utility model discloses a hydrophobic recovery plant of steam turbine, as shown in fig. 1, hydrophobic recovery plant sets up the row who condenses the mouth at the steam turbine. Including the buffer memory case 3, recovery tube 1 and the collecting box 2 that connect gradually, when arranging the excessive time of mouthful exhaust comdenstion water flow, buffer memory case 3 has the effect of providing the buffering for the comdenstion water, and buffer memory case 3 and row's of mouthful department of condensing are equipped with check valve 32, reduce the comdenstion water reflux that enters into in the turbine. Be equipped with one-level valve 33 between buffer tank 3 and recovery tube 1, one-level valve 33 is connected with PLC controller 7PLC, when boiler 8 stops to provide steam to the steam turbine, the hydrophobic recovery plant stop work of PLC controller 7PLC simultaneous control, simultaneously one-level valve 33 also can be closed thereupon, but still there is some vapor in the air current machine doing work, and continue to discharge the comdenstion water to the drainage mouth of condensing, buffer tank 3 is used for retrieving this part of comdenstion water, be equipped with perspective mirror 31 on buffer tank 3, the staff can observe the water level in the buffer tank 3 through perspective mirror 31, when the water level was too high in buffer tank 3, the staff can manually open one-level valve 33, the comdenstion water in the buffer tank 3 flows into collecting box 2.

As shown in fig. 2, one end of the collection tank 2 far away from the recovery pipe 1 is connected with a first-stage water outlet pipe 22 and a second-stage water outlet pipe 23, and the first-stage water outlet pipe 22 and the second-stage water outlet pipe 23 are respectively connected with a first-stage water pump 24 and a second-stage water pump 25. When the drainage recovery equipment normally works, the PLC controller 7PLC controls the first-stage water suction pump 24 to be started to work, and water in the collection box 2 is pumped out through the first-stage water outlet pipe 22. Be equipped with liquid level appearance 21 (see fig. 3) in the collecting box 2, liquid level appearance 21 is connected with PLC controller 7PLC, and when row's of condensate outlet exhaust comdenstion water yield was great, liquid level appearance 21 detected in the collecting box 2 when the water level reached dangerous water level, PLC controller 7PLC controlled second grade suction pump 25 opened, and the ponding was taken out in collecting box 2 simultaneously to one-level outlet pipe 22 and second grade outlet pipe 23. Meanwhile, when the first-stage water suction pump 24 stops working unexpectedly, the water level in the collection box 2 rises gradually, the liquid level meter 21 detects that the water level in the collection box 2 reaches a certain height, the PLC controller 7PLC controls the second-stage water suction pump 25 to be turned on, and the second-stage water outlet pipe 23 pumps out condensed water in the collection box 2.

As shown in fig. 4, the ends of the primary water outlet pipe 22 and the secondary water outlet pipe 23 are merged and connected with a tertiary water outlet pipe 26, and the tertiary water outlet pipe 26 is connected with the boiler 8 connected with the steam turbine. Because each pipeline of comdenstion water through buffer tank 3, 2 one-level of collecting box, some impurity may be thoughtlessly had in tertiary outlet pipe 26 one-level filter 6 and second grade filter 61 of being equipped with in proper order, second grade filter 61 is close to filterable one end, and the filtration pore diameter of one-level filter 6 is 2 times to 4 times of the filtration pore diameter of second grade filter 61. The first order filter 6 is arranged in filtering great impurity to the condenser pipe, and less impurity can be filtered to second grade filter 61, and first order filter 6 can reduce the phenomenon that second grade filter 61 blockked up because of great impurity.

As shown in figure 2, a first-level water quality monitor 27 is arranged in the collection box 2, a third-level valve 28 is arranged at one end, close to the boiler 8, of the third-level water outlet pipe 26, the first-level water quality monitor 27 can detect whether the oxygen content of the condensed water in the collection box 2 meets the requirement of the boiler 8, and when the oxygen content of the collected condensed water is too high, the PLC 7 controls the third-level valve 28 to be closed. Tertiary outlet pipe 26 is connected with oxygen-eliminating device 41, and tertiary outlet pipe 26 and oxygen-eliminating device 41 are equipped with drainage tube 4, are equipped with second grade valve 44 on the drainage tube 4, and the one end that drainage tube 4 was kept away from to oxygen-eliminating device 41 is equipped with level four outlet pipe 42. After tertiary valve 28 closes, PLC controller 7PLC control second grade valve 44 is opened, and the comdenstion water that drainage tube 4 will not conform to the boiler 8 requirement is handled through oxygen-eliminating device 41, and the comdenstion water after the deoxidization is exported through level four outlet pipe 42. A second-stage water quality monitor 45 is arranged on the fourth-stage water outlet pipe 42, the second-stage water quality monitor 45 is used for carrying out secondary detection on the condensate water after oxygen removal, the fourth-stage water outlet pipe 42 is connected with a first-stage return pipe 43 and a second-stage return pipe 46, the second-stage water quality monitor 45 is positioned between the fourth-stage water outlet pipe 42 and the second-stage return pipe 46, the first-stage return pipe 43 and the second-stage return pipe 46 are arranged in parallel, meanwhile, the first-stage return pipe 43 and the second-stage return pipe 46 are respectively provided with a fourth-stage valve 47 and a fifth-stage valve 48, when the condensate water after secondary detection still does not meet the quality required by the boiler 8, the PLC 7PLC controls the fourth-stage valve 47 to be closed and opens the fifth-stage valve 48 to convey the condensate water of the fourth-, and circulating deoxidization is carried out until the quality that the condensate water meets the requirements of the boiler 8 is detected by the secondary water quality monitor 45, the PLC controller 7 controls the four-stage valve 47 to be opened, the primary return pipe 43 is connected with the boiler 8, the condensate water meeting the requirements of the boiler 8 flows back to the boiler 8 through the pressure difference formed by the internal structure of the primary return pipe 43, and the boiler 8 heats the condensate water for utilization.

As shown in fig. 2, the deaerator 41 applies work through hot gas to deaerate a water source, the hot gas can be continuously discharged from a steam outlet of the steam turbine when the steam turbine works, the steam outlet of the steam turbine is connected with the steam exhaust pipe 49 to recycle the steam exhaust pipe, the steam exhaust pipe 49 is connected with the deaerator 41, and the recycled hot gas is used as a supplementary heat source of the deaerator 41. The row of oxygen-eliminating device 41 congeals the mouth and is connected with five-level outlet pipe 5, and five-level outlet pipe 5 is provided with tertiary suction pump 51, and five-level outlet pipe 5 is through tertiary suction pump 51 work, retrieves the row of oxygen-eliminating device 41 congeals mouthful exhaust comdenstion water, and five-level outlet pipe 5 connects collecting box 2, and the comdenstion water after retrieving is collected to collecting box 2, has further practiced thrift the water resource.

The specific implementation process comprises the following steps: the boiler 8 heats a water source and provides steam to the steam turbine, and the steam after doing work is discharged into the buffer tank 3 through the condensing ports at all positions of the steam turbine body and is stored in the collection tank 2 through the recovery pipe 1. When the general liquid level meter 21 detects that the water level is not high, the PLC controller 7PLC controls the first-stage water suction pump 24 to start working, condensed water in the collecting box 2 is pumped out through the first-stage water outlet pipe 22, and when the liquid level meter 21 detects that the water level of the collecting box 2 is high, the PLC controller 7PLC controls the second-stage water suction pump 25 to be started to work. Meanwhile, the first-stage water quality monitor 27 detects the water quality in the collecting tank 2, and when the detected condensate water meets the requirements of the boiler 8, the condensate water extracted through the first-stage water outlet pipe 22 or the second-stage water outlet pipe 23 is conveyed into the boiler 8 through the third-stage water outlet pipe 26 for heating and utilization. When detecting the comdenstion water and not conforming to the requirement of boiler 8, tertiary outlet pipe 26 carries the comdenstion water when in drainage tube 4, handle in carrying oxygen-eliminating device 41, the comdenstion water after the processing passes through second grade water quality monitoring ware 45 and detects, when the secondary detects when conforming to the requirement, the comdenstion water is carried the boiler 8 by one-level back flow 43 and is heated the utilization, when the secondary detects when not conforming to the requirement, the comdenstion water is circulated to drainage tube 4 by second grade back flow 46, handle through oxygen-eliminating device 41 once more, until the detection through second grade water quality monitoring ware 45 detects, heat the utilization in carrying boiler 8 by one-level.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims (8)

1. The utility model provides a hydrophobic recovery plant of steam turbine, hydrophobic recovery plant sets up the row who condenses mouthful at the steam turbine which characterized in that: each drainage and condensation port is connected with a recovery pipe (1), all the recovery pipes (1) are connected with a collection box (2), a liquid level meter (21) is arranged in the collecting box (2), the liquid level meter (21) is electrically connected with a PLC (programmable logic controller) (7), the collecting box (2) is connected with a primary water outlet pipe (22) and a secondary water outlet pipe (23), the first-stage water outlet pipe (22) is connected with a first-stage water suction pump (24), the second-stage water outlet pipe (23) is connected with a second-stage water suction pump (25), the first-stage water pump (24) and the second-stage water pump (25) are both electrically connected with the PLC (7), the tail ends of the first-stage water outlet pipe (22) and the second-stage water outlet pipe (23) are converged and connected with a third-stage water outlet pipe (26), and the three-stage water outlet pipe (26) is connected with a boiler (8), and the boiler (8) is connected with the steam turbine.

2. The hydrophobic recovery apparatus of a steam turbine according to claim 1, wherein: arrange and congeal mouthful and be equipped with buffer tank (3) with recovery tube (1) junction, be equipped with perspective mirror (31) on buffer tank (3), perspective mirror (31) with buffer tank (3) sealing connection, arrange congeal mouthful with buffer tank (3) junction is connected with check valve (32), buffer tank (3) are kept away from the one end of check valve (32) is equipped with one-level valve (33), one-level valve (33) are connected with PLC controller (7).

3. The hydrophobic recovery apparatus of a steam turbine according to claim 1, wherein: a primary water quality monitor (27) is arranged in the collection box (2), the primary water quality monitor (27) is electrically connected with a PLC (programmable logic controller) (7), the tertiary water outlet pipe (26) is connected with a drainage pipe (4), the drainage pipe (4) is connected with a deaerator (41), one end, far away from the drainage pipe (4), of the deaerator (41) is connected with a quaternary water outlet pipe (42), the quaternary water outlet pipe (42) is connected with a primary return pipe (43), and the primary return pipe (43) is connected with a boiler (8); drainage tube (4) with deaerator (41) junction is provided with second grade valve (44), the one end that tertiary outlet pipe (26) is close to boiler (8) is equipped with tertiary valve (28), second grade valve (44) with tertiary valve (28) are connected with PLC controller (7) electricity.

4. The drain recovery apparatus of a steam turbine according to claim 3, wherein: level four outlet pipe (42) are close to the one end of oxygen-eliminating device (41) is equipped with second grade water quality monitor (45), level four outlet pipe (42) are connected with second grade back flow (46), one-level back flow (43) with second grade back flow (46) are parallelly connected, one-level back flow (43) are connected with level four valve (47), second grade back flow (46) are connected with five valve (48), drainage tube (4) are connected to the one end that second grade water quality monitor (45) were kept away from in second grade back flow (46).

5. The drain recovery apparatus of a steam turbine according to claim 4, wherein: the drainage and condensation port of the deaerator (41) is connected with a five-stage water outlet pipe (5), the five-stage water outlet pipe (5) is connected with the collecting box (2), and the five-stage water outlet pipe (5) is provided with a three-stage water suction pump (51).

6. The drain recovery apparatus of a steam turbine according to claim 4, wherein: the exhaust steam port of the steam turbine is connected with an exhaust steam pipe (49), and the exhaust steam pipe (49) is connected with a deaerator (41).

7. The hydrophobic recovery apparatus of a steam turbine according to claim 1, wherein: and a first-stage filter plate (6) is arranged at the position, close to the first-stage water outlet pipe (22), of the third-stage water outlet pipe (26).

8. The hydrophobic recovery apparatus of a steam turbine according to claim 7, wherein: the tertiary outlet pipe (26) department of being close to boiler (8) is equipped with second grade filter (61), the filtration pore diameter of one-level filter (6) is 2 times to 4 times of the filtration pore diameter of second grade filter (61).

Images