CN202284918U - Water refilling and deoxidizing system for turbine condenser - Google Patents
Water refilling and deoxidizing system for turbine condenser Download PDFInfo
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- CN202284918U CN202284918U CN2011202651723U CN201120265172U CN202284918U CN 202284918 U CN202284918 U CN 202284918U CN 2011202651723 U CN2011202651723 U CN 2011202651723U CN 201120265172 U CN201120265172 U CN 201120265172U CN 202284918 U CN202284918 U CN 202284918U
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- water
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- condenser
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 183
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 19
- 239000001301 oxygen Substances 0.000 claims abstract description 19
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 238000005507 spraying Methods 0.000 claims description 35
- 230000001502 supplementing effect Effects 0.000 claims description 34
- 230000001105 regulatory effect Effects 0.000 claims description 15
- 238000000605 extraction Methods 0.000 claims description 9
- 238000011033 desalting Methods 0.000 claims 1
- 238000001704 evaporation Methods 0.000 abstract description 5
- 230000008020 evaporation Effects 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract 1
- 230000003020 moisturizing effect Effects 0.000 description 22
- 238000010438 heat treatment Methods 0.000 description 9
- 239000013589 supplement Substances 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 238000000889 atomisation Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 241000197194 Bulla Species 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 208000002352 blister Diseases 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model relates to the technology of turbines, and particularly discloses a water refilling and deoxidizing system for a turbine condenser, which includes a water refilling pipeline, a steam pipeline, a water discharge pipeline, a water refilling and deoxidizing device, a water sealing device and an orifice plate. The refilled water from the system is heated by the steam extracted by the turbine main body; as the temperature of the heated refilled water is higher than the saturation temperature of the condenser under the operating pressure for 3 to 3.5 DEG C and the system has the function of flash evaporation, a part of steam is flash-evaporated from the hot water entering the hot well of the condenser, the oxygen dissolved in the water escapes together with the steam, and furthermore the purpose of the deoxidization is achieved. The water refilling amount and the steam extracting amount of the system are both adjusted through a flow adjusting valve which is controlled by the distributed control system (DCS). The water refilling and deoxidizing system doesn't need to reform the condenser, has a simple structure, and operates reliably.
Description
Technical Field
The utility model relates to a steam turbine technical field is a steam turbine condenser moisturizing deoxidization system.
Background
At present, a plurality of straight condensing units are transformed by heat supply steam extraction, the problem of water supplement and oxygen removal is brought along therewith, and the common water supplement and oxygen removal of a condenser can adopt throat nozzle atomization and oxygen removal or a mode of increasing a bubbling oxygen remover in a hot well. According to the HEI standard, the flow of cold water directly entering a condenser cannot exceed 5% of the exhaust steam quantity, otherwise, the deoxidization effect cannot be ensured, and therefore the throat nozzle atomization cannot meet the requirements of deoxidization with large water supplement quantity. And the mode of increasing the tympanic bulla oxygen-eliminating device inside the hot well needs to increase the deaerator in condenser hot well, introduces heating steam, heats the moisturizing, deoxidization again. The water replenishing and oxygen removing mode needs to greatly change the existing condenser, and the space is limited.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a steam turbine condenser moisturizing deoxidization system to solve the problem of the large-traffic moisturizing deoxidization of current large-scale steam turbine.
In order to achieve the above purpose, the technical solution of the utility model is that:
a water supplementing and deoxidizing system of a steam turbine condenser comprises a water supplementing pipeline 1, a steam pipeline 2, a water outlet pipeline 3, a water spraying groove 4, a baffle plate 5, a supporting rib plate 6, a flow regulating valve 8, a stop valve 9, a check valve 10, a water supplementing and deoxidizing device 11, a water seal device 14 and a throttling orifice plate 16; wherein,
the water replenishing and deoxidizing device 11 is a tank body, a water replenishing pipeline 1 is fixedly connected with a water spraying collecting pipe 12 through a stop valve 9 and a flow regulating valve 8, a steam pipeline 2 is fixedly connected with a steam collecting pipe 13 through a check valve 10, the stop valve 9 and the flow regulating valve 8, the output ends of the water spraying collecting pipe 12 and the steam collecting pipe 13 extend into the inner cavity of the water replenishing and deoxidizing device 11, and a plurality of fine small holes are formed in the circumference of the output ends of the water spraying collecting pipe 12 and the steam collecting pipe 13; the upper end of the water supplementing and deoxidizing device 11 is connected with the steam side space of the condenser through a throttling orifice plate 16 and a stop valve 9, and the lower end of the water supplementing and deoxidizing device 11 is fixedly connected with the upper end of a water seal device 14 through a vertical pipe 15;
the input end of the water outlet pipeline 3 extends into the water seal device 14, and the output end of the water outlet pipeline 3 passes through the bottom 7 of the condenser hot well, and the end is fixedly connected to the bottom surface of the water spraying groove 4 and communicated with the groove of the water spraying groove 4; the lower side surface of the bottom surface of the water sprinkling tank 4 is fixedly connected with the inner wall of the bottom 7 of the condenser hot well through a plurality of supporting rib plates 6; a plurality of baffle plates 5 are arranged on the upper edges of the two longitudinal side walls of the groove of the water spraying groove 4, one end of each baffle plate 5 is fixedly connected to the upper edge of the side wall of the water spraying groove 4, and the other end is bent downwards;
the input end of the water supplementing pipeline 1 is communicated with the demineralized water tank, and the input end of the steam pipeline 2 is communicated with the steam extraction pipeline of the steam turbine body.
The water replenishing and deoxidizing system of the steam turbine condenser is characterized in that the plurality of baffle plates 5 are horizontally arranged and uniformly distributed; a gap is arranged at the fixed connection position of each baffle plate 5 and the upper edge of the side wall of the water spraying groove 4, and one end of each baffle plate 5 is fixedly connected with the bottom edge of the gap.
In the water replenishing and deoxidizing system for the steam turbine condenser, at least two support rib plates 6 are arranged at two longitudinal ends of the water sprinkling tank 4; each supporting rib plate 6 is vertically arranged, the upper end of each supporting rib plate is fixedly connected with the outer side of the bottom surface of the water spraying groove 4, and the lower end of each supporting rib plate is fixedly connected with the inner wall of the bottom 7 of the condenser hot well.
The steam turbine condenser moisturizing deoxidization system, its 3 outputs of outlet conduit pass condenser hot well bottom 7, are equipped with the through-hole in condenser hot well bottom 7, through-hole and 3 output external diameters looks adaptations of outlet conduit, 3 outputs of outlet conduit pass the through-hole, its periphery and the sealed rigid coupling of through-hole.
The steam turbine condenser water supplementing and oxygen removing system is characterized in that the water supplementing amount and the steam extraction amount of the steam turbine condenser water supplementing and oxygen removing system are adjusted through flow regulating valves 8 arranged in a water supplementing pipeline 1 and a steam pipeline 2, and the flow regulating valves 8 are electromagnetic valves and controlled by a Distributed Control System (DCS).
The steam turbine condenser water supplementing and deoxidizing system is characterized in that the temperature of the heated water supplementing system is 3-3.5 degrees higher than the saturation temperature of the steam turbine condenser under the operating pressure.
The utility model has the advantages that:
1) the problem of large-traffic moisturizing can be solved, easy operation moreover only needs to open a hole and install the basin that drenches that makes in advance in the condenser in former condenser hot-well bottom, and the welding pipeline everywhere can. Meanwhile, in the deaerating device, cold water is sprayed out of the small holes in the tank and is heated by steam sprayed out of the small holes, and sufficient deaerating can be achieved only by heating the cold water to be higher than the saturation temperature of the condenser by 3 ℃ or slightly higher than 3 ℃.
2) The system is simple in structure, the condenser does not need to be changed, the whole system is controlled by a Distributed Control System (DCS), and the operation is reliable and safe.
Drawings
FIG. 1 is a schematic view of a steam turbine condenser water replenishing and deoxidizing system of the present invention;
fig. 2 is the utility model relates to a baffling board and condenser installation section sketch map among steam turbine condenser moisturizing deoxidization system.
Detailed Description
Referring to fig. 1 and 2, the steam turbine condenser water replenishing and deoxidizing system of the present invention includes a water replenishing pipeline 1, a steam pipeline 2, a water outlet pipeline 3, a water spraying tank 4, a baffle plate 5, a support rib plate 6, a flow regulating valve 8, a stop valve 9, a check valve 10, a water replenishing and deoxidizing device 11, a water seal device 14, and a throttle orifice 16; the water replenishing and deoxidizing device 11 is a tank body, a water replenishing pipeline 1 is fixedly connected with a water spraying collecting pipe 12 through a stop valve 9 and a flow regulating valve 8, a steam pipeline 2 is fixedly connected with a steam collecting pipe 13 through a check valve 10, the stop valve 9 and the flow regulating valve 8, the output ends of the water spraying collecting pipe 12 and the steam collecting pipe 13 extend into the inner cavity of the water replenishing and deoxidizing device 11, and a plurality of fine and dense small holes are formed in the circumference of the output ends of the water spraying collecting pipe 12 and the steam collecting pipe 13; the upper end of the water supplementing and deoxidizing device 11 is connected with the steam side space of the condenser through a throttling orifice plate 16 and a stop valve 9, and the lower end of the water supplementing and deoxidizing device 11 is fixedly connected with the upper end of a water seal device 14 through a vertical pipe 15.
The input end of the water outlet pipeline 3 extends into the water seal device 14, the output end of the water outlet pipeline 3 penetrates through a through hole at the bottom 7 of the condenser hot well, the through hole is matched with the outer diameter of the output end of the water outlet pipeline 3, and the circumference of the water outlet pipeline 3 is fixedly connected with the through hole in a sealing mode. The output end of the water outlet pipeline 3 penetrates through the bottom 7 of the condenser hot well, and the end head is fixedly connected to the bottom surface of the water spraying groove 4 and is communicated with the groove of the water spraying groove 4. The lower side surface of the bottom surface of the water spraying tank 4 is fixedly connected with the inner wall of the bottom 7 of the condenser hot well through a plurality of supporting rib plates 6. A plurality of baffle plates 5 are fixedly arranged on the upper edges of the two longitudinal side walls of the groove of the water spraying groove 4, and the baffle plates 5 are horizontally arranged and uniformly distributed; each baffle plate 5 is fixedly connected with the upper edge of the side wall of the water spraying groove 4 and is provided with a notch, one end of each baffle plate 5 is fixedly connected with the bottom edge of the notch, and the other end of each baffle plate is bent downwards.
The input end of the water supplementing pipeline 1 is communicated with the demineralized water tank, and the input end of the steam pipeline 2 is communicated with the steam extraction pipeline of the steam turbine body.
At least two support rib plates 6 are positioned at the two longitudinal ends of the water sprinkling tank 4; each supporting rib plate 6 is vertically arranged, the upper end of each supporting rib plate is fixedly connected with the outer side of the bottom surface of the water spraying groove 4, and the lower end of each supporting rib plate is fixedly connected with the inner wall of the bottom 7 of the condenser hot well.
The water supplementing quantity and the steam extraction quantity of the steam turbine condenser water supplementing and deoxidizing system are adjusted through flow adjusting valves 8 arranged in a water supplementing pipeline 1 and a steam pipeline 2, and the flow adjusting valves 8 are electromagnetic valves and are controlled by a Distributed Control System (DCS).
And (3) supplementing water after heating, wherein the temperature of the supplemented water is 3-3.5 ℃ higher than the saturation temperature of the condenser under the operating pressure.
The utility model discloses a steam turbine condenser moisturizing deoxidization system dodges the computational formula of steam volume as follows:
in the formula: g-percentage of fluid flash vapor amount to fluid mass flow;
h 1-specific enthalpy before fluid flash evaporation;
h 2-specific enthalpy after fluid flash evaporation;
r-the corresponding latent heat of vaporization at condenser pressure.
The flash steam amount is calculated to be more than 700 times of the oxygen content in the water, and the oxygen content in the water can be fully escaped.
The utility model discloses a steam turbine condenser moisturizing deoxidization system's work flow does:
a. the water supply enters a water spraying header 12 through a water supply pipeline 1 through a stop valve 9 and a flow regulating valve 8, and the heating steam enters a steam header 13 through a steam pipeline 2 through a check valve 10, the stop valve 9 and the flow regulating valve 8;
b. steam is sprayed upwards from the fine small holes on the steam collecting pipe 13, the water is sprayed downwards through the fine small holes on the water spraying collecting pipe 12 and is fully diffused, the water is mixed with the steam in the cavity of the water supplementing and deoxidizing device 11, and the water fully absorbs heat released by heating the steam to form hot water;
c. the heated hot water enters a water seal device 14 through a vertical pipe 15 at the lower end of the water replenishing and deoxidizing device 11, and then enters a water spraying groove 4 of the condenser through a water outlet pipeline 3;
d. hot water filled in the water sprinkling tank 4 overflows through a plurality of gaps and forms a plurality of thin water films to be sprinkled downwards through a plurality of baffle plates 5;
e. the temperature of the hot water is 3-3.5 ℃ higher than the saturation temperature of the condenser, the energy of flash evaporation is provided, part of steam is flashed, and oxygen contained in the water escapes along with the steam of the flash evaporation, so that the purpose of removing oxygen is achieved.
The utility model discloses a pressure in moisturizing deaerating plant 11 is maintained by the orifice plate 16 of moisturizing deaerating plant 11 upper end, and orifice plate 16 both kept in moisturizing deaerating plant 11 and the condenser between the pressure differential, and the steam that the restriction was leaked into in the condenser again is no longer than 1% of heating steam total amount to reach the purpose that reduces the heat loss.
The pressure in the water supplementing and deoxidizing device 11 is higher than the pressure in the condenser, so that the water supplementing and deoxidizing device 11 is not filled with the water, the water and the heating steam have sufficient heat exchange space, and the water in the water supplementing and deoxidizing device 11 smoothly flows into the water spraying groove 4.
The utility model discloses a water seal arrangement 14, when condenser pressure receives the influence of external cooling water temperature and changes, the water level that is located the perpendicular pipe 15 that 11 lower extremes of moisturizing deaerator and water seal arrangement 14 are connected is automatic undulant, maintain throughout in the moisturizing deaerator 11 with the pressure differential in condenser space not destroyed, in order to guarantee respective steady operation, prevent steam space and condenser space UNICOM in the moisturizing deaerator 11, and prevent that steam from still having arrived and just discharging into the condenser through outlet pipe 3 with the moisturizing heat transfer in.
Example (b):
a moisturizing deoxidization for certain 300MW steam turbine condenser, the design pressure of this condenser is 4.9kpa, the design pressure in deaerating plant 11 is 15kpa, 0.1MPa, 20 degrees moisturizing is through moisturizing pipeline 1 entering water spray header 12, it has 240 phi 10's aperture to open on the water spray header 12, heating steam is taken out from 6 sections steam extraction pipes of steam turbine body, steam passes through steam conduit 2 and gets into steam header 13, it has 120 phi 10's aperture to open on the steam header 13, this section steam extraction pressure is 0.173MPa, can prevent that 0.1 MPa's moisturizing from being inhaled into the turbine and causing the accident. The 20-degree water supplement is sprayed into a water supplement deaerating plant 11 with the design pressure of 15kpa and the outer diameter of phi 924x12 through a phi 10 small hole and is sufficiently diffused, heat released by heating steam is sufficiently absorbed in a space with the jet length of about 500mm and is heated to 36 degrees, then the heat enters a water spraying groove 4 of a condenser through a water sealing device 14 and then enters the water spraying groove 4 of the condenser through a water outlet pipeline 3, hot water heated to 36 degrees flows to two sides along water grooves on the left side and the right side after entering the condenser, 32 thin water films with the width of 200mm are formed through 32 notches and 32 baffle plates 5 and are sprayed down, so that the water is uniformly dispersed, and the diffusion area is increased. And the temperature of the hot water is higher than the saturation temperature of the condenser by more than 3 ℃, partial steam is flashed, and oxygen in the water escapes along with the flashed steam, so that the aim of removing oxygen is fulfilled.
In order to prevent the steam space in the deaerating device 11 from being communicated with the condenser space and prevent steam from being exhausted into the condenser through the water outlet pipe 3 before reaching the water replenishing heat exchange, the water sealing device 14 is specially designed. The pressure in this deoxidization device 11 is 15kpa, and the pressure of condenser is 4.9kpa, and the pressure differential is 10.1kpa, and the water level in the vertical pipe 15 of moisturizing deoxidization device below is 1.01m than the water level in trickle groove 4 promptly, and when the pressure of condenser was influenced and is changed by external cooling water temperature in the operation, the water level in the vertical pipe 15 of deoxidization device was automatic undulant, guaranteed throughout that the pressure with the condenser space in the moisturizing deoxidization device is not destroyed, keeps respective steady operation.
Claims (6)
1. A water supplementing and deoxidizing system of a steam turbine condenser comprises a water supplementing pipeline (1), a steam pipeline (2), a water outlet pipeline (3), a water spraying groove (4), a baffle plate (5), a supporting rib plate (6), a flow regulating valve (8), a stop valve (9), a check valve (10), a water supplementing and deoxidizing device (11), a water seal device (14) and a throttling orifice plate (16); which is characterized in that, among others,
the water replenishing and deoxidizing device (11) is a tank body, a water replenishing pipeline (1) is fixedly connected with a water spraying collecting pipe (12) through a stop valve (9) and a flow regulating valve (8), a steam pipeline (2) is fixedly connected with a steam collecting pipe (13) through a check valve (10), the stop valve (9) and the flow regulating valve (8), the output ends of the water spraying collecting pipe (12) and the steam collecting pipe (13) extend into the inner cavity of the water replenishing and deoxidizing device (11), and a plurality of fine small holes are formed in the circumference of the output ends of the water spraying collecting pipe (12) and the steam collecting pipe (13); the upper end of the water supplementing and deoxidizing device (11) is connected with the steam side space of the condenser through a throttling orifice plate (16) and a stop valve (9), and the lower end of the water supplementing and deoxidizing device (11) is fixedly connected with the upper end of a water seal device (14) through a vertical pipe (15);
the input end of the water outlet pipeline (3) extends into the water seal device (14), and the output end of the water outlet pipeline (3) is fixedly connected to the bottom surface of the water sprinkling tank (4) and communicated with the groove of the water sprinkling tank (4) after passing through the bottom (7) of the condenser hot well; the lower side surface of the bottom surface of the water spraying tank (4) is fixedly connected with the inner wall of the bottom (7) of the condenser hot well through a plurality of supporting rib plates (6); a plurality of baffle plates (5) are arranged on the upper edges of the two longitudinal side walls of the groove of the water spraying groove (4), one end of each baffle plate (5) is fixedly connected to the upper edge of the side wall of the water spraying groove (4), and the other end is bent downwards;
the input end of the water replenishing pipeline (1) is communicated with the desalting water tank, and the input end of the steam pipeline (2) is communicated with the steam extraction pipeline of the steam turbine body.
2. The steam turbine condenser water replenishing and oxygen removing system according to claim 1, wherein the plurality of baffle plates (5) are horizontally arranged and uniformly distributed; a gap is arranged at the fixed connection position of each baffle plate (5) and the upper edge of the side wall of the water spraying groove (4), and one end of each baffle plate (5) is fixedly connected with the bottom edge of the gap.
3. The steam turbine condenser water supplementing and oxygen removing system according to claim 1, wherein at least two of the plurality of supporting rib plates (6) are positioned at two longitudinal ends of the water sprinkling tank (4); each supporting rib plate (6) is vertically arranged, the upper end of each supporting rib plate is fixedly connected with the outer side of the bottom surface of the water spraying groove (4), and the lower end of each supporting rib plate is fixedly connected with the inner wall of the bottom (7) of the condenser hot well.
4. The steam turbine condenser water supplementing and oxygen removing system according to claim 1, wherein the output end of the water outlet pipeline (3) penetrates through the bottom (7) of the condenser hot well, a through hole is formed in the bottom (7) of the condenser hot well, the through hole is matched with the outer diameter of the output end of the water outlet pipeline (3), the output end of the water outlet pipeline (3) penetrates through the through hole, and the circumference of the output end of the water outlet pipeline (3) is fixedly connected with the through hole in a sealing mode.
5. The steam turbine condenser water supplementing and oxygen removing system according to claim 1, wherein the adjustment of the water supplementing amount and the steam extraction amount is realized by a flow regulating valve (8) arranged in the water supplementing pipeline (1) and the steam pipeline (2), and the flow regulating valve (8) is an electromagnetic valve and is controlled by a Distributed Control System (DCS).
6. The steam turbine condenser water replenishing and oxygen removing system according to claim 1, wherein the temperature of the heated water replenishing is 3-3.5 degrees higher than the saturation temperature of the condenser under the operating pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202651723U CN202284918U (en) | 2011-07-25 | 2011-07-25 | Water refilling and deoxidizing system for turbine condenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202651723U CN202284918U (en) | 2011-07-25 | 2011-07-25 | Water refilling and deoxidizing system for turbine condenser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202284918U true CN202284918U (en) | 2012-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202651723U Expired - Fee Related CN202284918U (en) | 2011-07-25 | 2011-07-25 | Water refilling and deoxidizing system for turbine condenser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202284918U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102901370A (en) * | 2011-07-25 | 2013-01-30 | 北京全四维动力科技有限公司 | Steam turbine condenser water-supplementing and deoxidizing system |
| CN111853755A (en) * | 2020-07-27 | 2020-10-30 | 浙江浙能技术研究院有限公司 | A multi-source energy-based control method for condenser water replenishment and deoxygenation |
-
2011
- 2011-07-25 CN CN2011202651723U patent/CN202284918U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102901370A (en) * | 2011-07-25 | 2013-01-30 | 北京全四维动力科技有限公司 | Steam turbine condenser water-supplementing and deoxidizing system |
| CN111853755A (en) * | 2020-07-27 | 2020-10-30 | 浙江浙能技术研究院有限公司 | A multi-source energy-based control method for condenser water replenishment and deoxygenation |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120627 Termination date: 20200725 |
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| CF01 | Termination of patent right due to non-payment of annual fee |