CN201599260U - Vacuum extractor of turbine condenser - Google Patents
Vacuum extractor of turbine condenser Download PDFInfo
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- CN201599260U CN201599260U CN2009202710974U CN200920271097U CN201599260U CN 201599260 U CN201599260 U CN 201599260U CN 2009202710974 U CN2009202710974 U CN 2009202710974U CN 200920271097 U CN200920271097 U CN 200920271097U CN 201599260 U CN201599260 U CN 201599260U
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- water
- water tank
- cooler
- condenser
- jet air
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Abstract
The utility model relates to the technical field of auxiliary equipment of turbine units, in particular to vacuum extractor of a turbine condenser. The vacuum extractor comprises at least two water-jet air extractors which are connected in series via a pipeline so as to form a multi-stage water-jet air extractor structure. A cooler (10) is arranged on an air inlet pipe (6) of the water-jet air extractor at the first stage, and a water colleting tank (11) is arranged on the lower portion of the cooler (10) and connected with a condenser via a pipe and a stream trap (7). Mixing chambers of the water-jet air extractors at different stages can be arranged into an integral structure. The vacuum pumping equipment is a multi-stage serial-connection structure, and can perform continuous and high-efficient vacuum pumping to the condenser, thereby increasing air extracting efficiency greatly and guaranteeing the optimum vacuum degree of the condenser. The cooler (10) arranged in front of the multi-stage water-jet air extractor can reduce temperature of air pumped from the condenser, and prevent temperature of medium water from raising too fast or prevent the medium water from being vaporized, thereby ensuring fine operation of the turbine unit.
Description
Technical field
The utility model relates to a kind of supplementary equipment technical field of steam turbine set, specifically a kind of vaccum-pumping equipment of turbine condenser.
Background technique
Along with development and national economy, town and country power supply unit and heating equipment consumption grow with each passing day, and steam turbine is widely adopted as a kind of high efficiency power equipment, and its operational efficiency and Security are also important further.Along with the growth to the power supply heat demand, the steam turbine capacity constantly increases, and the cooling of equipment is had relatively high expectations.In the cooling system, the condensing equipment of steam turbine is the visual plant in the cooling system, and it mainly acts on is to set up and the maintenance high vacuum at the turbine discharge mouth, improves the thermal efficiency of cycle of steam turbine.Can and the vacuum of vapour condenser be to set up by the air that air ejector is extracted out wherein, keep or be one of essential condition of weighing condensing equipment operating conditions quality near the most favourable vacuum.Because be in operation, the vacuum decline of vapour condenser can cause directly that thermal loss of steam turbine, the steam consumption increase and the reduction of exerting oneself, and the vacuum reduction can make exhaust temperature raise, and influence the safe operation of steam turbine, so the performance of air exhauster plays key effect in this respect.The jet-type air exhauster is with its little power consumption, the Economy height, operating cost is low to be widely adopted, the jet-type air exhauster divides the jetting formula and the formula of emanating by working medium, and the formula of emanating air exhauster is made the work medium with high pressure steam, though existing multistage extract system, but it is less economical, when sliding parameter starts, also need the vapour source is set in addition, need constantly to adjust the working steam parameter during varying duty, be only applicable to the small capacity unit.Jetting formula air exhauster is to make the work medium with press water, and present jetting formula air exhauster generally all adopts the single-stage extract system, and pumping efficiency is lower, particularly jumbo steam turbine set, the very difficult the most favourable degree of vacuum that keeps vapour condenser equipment.In addition, water is as working medium, the pyroconductivity of water is higher, and warming velocity is fast, has also absorbed a large amount of heats in the time of vapour in the nozzle water spray absorption vapour condenser and gas mixture, cause water temperature to raise, influence its effect of bleeding after water temperature raises, need a large amount of moisturizings, change water in order to reduce water temperature, water consumption is big, particularly jumbo steam turbine set, the very difficult the most favourable degree of vacuum that keeps vapour condenser; Because the Zhong Shui of this system is under the working environment of high negative pressure, when temperature reaches nearly 40 when spending, the water capacity easily is vaporized, and the influence effect of bleeding influence the operating conditions of condensing equipment, thereby causes the work efficiency of steam turbine to reduce and the Safety performance reduction.
Summary of the invention
In order to overcome above-mentioned defective, it is a kind of rational in infrastructure that the utility model provides, and WATER AS FLOW MEDIUM heats up slow, and the pumping efficiency height is guaranteed the vaccum-pumping equipment of turbine condenser of the degree of vacuum of vapour condenser.
The technical solution adopted in the utility model is: a kind of vaccum-pumping equipment of turbine condenser, comprise at least two jetting air exhauster, described jetting air exhauster comprises water tank and water jet air ejector, water tank is connected the below of water jet air ejector, water pump is connected with the water tank of the first order by pipeline, by STEAM TRAP with adjust valve and be communicated with, the other end of water pump all is connected with each water jet air ejector by pipeline and makes WATER AS FLOW MEDIUM formation closed circulation water route between the water tank of each jetting air exhauster and water jet air ejector between water tanks at different levels; Described water jet air ejector comprises nozzle, mixing chamber and diffuser pipe, nozzle is arranged on the top in the mixing chamber, its upper end is communicated with the feed-water end of circulation waterway pipeline, and on the mixing chamber sidewall, spout place, nozzle lower end has suction port, suction port is connected with suction tude; Described diffuser pipe is connected the mixing chamber below, and the diffuser pipe lower end is connected with water tank; Have relief opening at water tank upper, the relief opening of previous stage water tank is communicated with formation and is connected in series with the suction tude of the jetting air exhauster of next stage; The suction tude of the jetting air exhauster of the first order is provided with cooler, and the other end of cooler is connected with vapour condenser by pipeline, and described cooler bottom is provided with header tank, and header tank is connected with vapour condenser with drain valve by pipeline; In the end the water tank of one-level jetting air exhauster is provided with flow-off and water supplement port.
The front side or the rear side of described water pump are provided with filter.
Be provided with the mixing waste pipe of same inner diameter below described diffuser pipe, diffuser pipe is connected with water tank by the mixing waste pipe of below.
The float-ball type safety check is set on the suction tude between cooler and the vapour condenser, this safety check comprises ball float, positioning ring, valve block and bringing into, the housing of air outlet, described positioning ring is horizontally fixed on middle part in the housing, positioning ring is plate-like, its outer rim shape is corresponding with the housing cavity shape, its center is provided with positioning hole, but the disk body of positioning ring is provided with the space that at least two supplied gas are passed through, described ball float is arranged on the below of positioning ring, ball float top is provided with connecting rod, and small end passes from positioning hole, and small end is provided with anti-fall, anti-fall greater than positioning hole, middle part at connecting rod is provided with valve block, and valve block is slightly less than positioning ring, below valve block, the arranged outside of ball float has the ball float guide channel, the ball float guide channel is fixedlyed connected with housing, but the ball float guide channel is provided with the space that supplied gas is passed through.
The mixing chamber of water jet air ejectors at different levels is arranged to overall structure, and the mixing chamber of air ejector promptly at different levels is horizontal or hoop is fixedly connected is integral.
The utility model is connected in series a plurality of jetting air exhauster, form multistage extract system, can continue being evacuated equipment, vacuum draw efficiently, this structure has improved pumping efficiency greatly, guarantee the most favourable degree of vacuum of vapour condenser, thereby guaranteed the running state that steam turbine set is good; The utility model is provided with cooler in multistage jetting air exhauster front portion can reduce the temperature of taking out the gas that comes from vapour condenser, prevents that WATER AS FLOW MEDIUM intensification vaporization too fast or WATER AS FLOW MEDIUM from having influence on the normal operation of steam turbine set; Gas is realized a part of gas, water separation in cooler, improve the working efficiency of air exhauster, thereby has improved the thermal efficiency of cycle of steam turbine set; Filter is set prevents that the impurity in the working medium from entering water jet air ejector, plug nozzle; Safety check adopts float-ball type, can reduce the resistance of bleeding, and prevents that liquid from flowing backwards.
Description of drawings
Fig. 1 is a structural representation of the present utility model
Fig. 2 is the structural representation of the utility model float-ball type safety check
Embodiment
Now the utility model is described in further detail in conjunction with the accompanying drawings, Fig. 1 is a kind of embodiment of the present utility model, its technological scheme that adopts is: a kind of vaccum-pumping equipment of turbine condenser, comprise four jetting air exhauster, described jetting air exhauster comprises water tank 1 and water jet air ejector 2, water tank 1 is connected the below of water jet air ejector 2, all is provided with level meter usually on water tank 1, is used to observe the water level situation.Working medium is generally water, also can be oil.Water pump 3 is connected with the water tank 1 of the first order by pipeline, is connected with adjustment valve 8 by STEAM TRAP 7 between water tanks 1 at different levels.The other end of water pump 3 all is connected with each water jet air ejector 2 by pipeline and makes WATER AS FLOW MEDIUM form the closed circulation water route between the water tank 1 of each jetting air exhauster and water jet air ejector 2.Described water jet air ejector 2 comprises nozzle 4, mixing chamber and diffuser pipe 5, nozzle 4 is arranged on the top in the mixing chamber, its upper end is communicated with the feed-water end of circulation waterway pipeline, and on the mixing chamber sidewall, spout place, nozzle 4 lower end has suction port, suction port is connected with suction tude 6.Described diffuser pipe 5 is connected the mixing chamber below, and diffuser pipe 5 diameters are greater than nozzle 4 apertures usually, and its upper end-hole is corresponding to position under nozzle 4 spouts, and its lower end is connected with water tank 1.Have relief opening on water tank 1 top, the relief opening of previous stage water tank 1 is communicated with formation and is connected in series with the suction tude 6 of the jetting air exhauster of next stage.In the end the water tank 1 of one-level jetting air exhauster is provided with flow-off and water supplement port.The suction tude 6 of the jetting air exhauster of the first order is provided with cooler 10, the other end of cooler 10 is connected with vapour condenser by pipeline, between cooler 10 and vapour condenser safety check 12 can also be set, cooler 10 of the present utility model can be a water-cooled, also can be air-cooling type.Described cooler 10 bottoms are connected with header tank 11 with valve by pipeline, the water that cooler 10 condenses enters header tank 11, header tank 11 is connected with vapour condenser with STEAM TRAP 7 by pipeline, also can be provided with fluviograph on the header tank 11, when water level reach a certain height, open STEAM TRAP 7 and make the water in the header tank 11 enter vapour condenser, water cycle is utilized again.In the end the water tank 1 of one-level jetting air exhauster is provided with flow-off and water supplement port.Rear side at water pump 3 is provided with filter 9, and filter 9 is used for filtering the impurity of working medium, prevents plug nozzle 4.
The utility model vapour condenser is connected with cooler 10 by pipeline, cooler 10 is connected with the jetting air exhauster of plural serial stage by pipeline again, during use, under the effect of water pump 3, WATER AS FLOW MEDIUM is carried out Rapid Cycle between water jet air ejector at different levels 2 and water tank 1, WATER AS FLOW MEDIUM sprays from nozzle 4, form one high-speed jet, outside nozzle 4 spouts, form under the strong ejector action, cooler 10 that suction is communicated with mixing chamber and the incondensable gas in the vapour condenser, gas in the vapour condenser is introduced into cooling in the cooler 10 under the pumping action of water jet air ejector 2, realize part gas, water separation, the header tank 11 that water enters cooler 10 bottoms is collected, and then enter cycling and reutilization in the vapour condenser, and the gas back temperature that is cooled reduces significantly and is drawn into mixing chamber then, again with the jetting current in diffuser pipe 5 is pumped to water tank 1, in water tank 1, carry out water, gas separates, be that water falls into circulation and suction vapour condenser are continued in water tank 1 back under water pump 3 effects gas, and gas enters the suction tude 6 of next stage through relief opening on water tank 1 top, be pumped to the water tank 1 of next stage by the water jet air ejector 2 of next stage, constantly suction is until afterbody water tank 1 continuously by the one-level level like this for gas, and the relief opening from afterbody water tank 1 enters atmosphere then.Therefore the gas in the vapour condenser is like this by the continuous continuous sucking of jetting air exhauster of plural serial stage, the pumping efficiency height, the degree of vacuum height of vapour condenser, the jetting air exhauster of present embodiment are the level Four series connection, and the degree of vacuum that is evacuated equipment can reach more satisfactory state.
The utility model can also be provided with the mixing waste pipe of same inner diameter in diffuser pipe 5 bottoms, mixing waste pipe can be connected with diffuser pipe 5 by flange, also can connect by other usual way, as welding etc., diffuser pipe 5 is connected with water tank 1 by the mixing waste pipe of below.It is the structure that the diffuser pipe 5 that a former length is long makes two connections into that the purpose of mixing waste pipe is set, because diffuser pipe 5 tops make the precision height, the bottom required precision is low, is convenient to like this process and install.
The utility model can also be provided with float-ball type safety check 12 on the suction tude between cooler 10 and the vapour condenser 6, see Fig. 2, this safety check 12 comprise ball float 33, positioning ring 31, valve block 32 and bring into, the housing 35 of air outlet.Housing 35 is generally cylindrical shape, and suction port is connected with the equipment of being evacuated, as vapour condenser last; The air outlet generally is connected with air ejector, as water jet air ejector 2 down.Described positioning ring 31 is horizontally fixed on middle part in the housing 35, positioning ring 31 is plate-like, its outer rim shape is corresponding with housing 35 cavity shapes, its center is provided with positioning hole, but the disk body of positioning ring 31 is provided with the space that at least two supplied gas are passed through, the space that present embodiment is two settings that evenly distribute, size is identical, the atmospheric channel resistance is more little more in the space.Described ball float 33 is arranged on the below of positioning ring 31, and ball float 33 tops are provided with connecting rod, and small end passes from positioning hole, and small end is provided with anti-fall, and anti-fall greater than positioning hole, and anti-fall is used to prevent that ball float 33 and connecting rod and positioning ring 31 break away from.Be provided with valve block 32 at the middle part of connecting rod, valve block 32 is slightly less than positioning ring 31, valve block 32 diameters are generally less than positioning ring 31 diameter 2-8 millimeters, and being convenient to valve block 32 can move up and down in housing 35 with connecting rod, can the ventilation space shutoff on the positioning ring 31 is just passable as long as satisfy valve block 32.Below valve block 32, the arranged outside of ball float 33 has ball float guide channel 34, ball float guide channel 34 is fixedlyed connected with housing 35, but ball float guide channel 34 is provided with the space that supplied gas is passed through.Ball float 33 can move up and down along ball float guide channel 34, drives valve block 32 simultaneously and moves up and down.When water jet air ejector 2 work, gas is entered in the housing 35 by suction port, and ball float 33 gravitates drive valve block 32 and fall, and form the space between valve block 32 and the positioning ring 31, and gas enters housing 35 belows and siphoned away by water jet air ejector 2 through the air outlet.When water jet air ejector 2 quits work, liquid forms backflow if enter housing 35 from the air outlet, the liquid that refluxes rises ball float 33, driving valve block 32 moves up, make valve block 32 be close to positioning ring 31, but and valve block 32 space shutoff that supplied gas on the positioning ring 31 is passed through, the gas of housing 35 bottoms or liquid can not enter the top of housing 35, reach the non-return effect.Float-ball type safety check 12 is littler than conventional springs formula safety check air ventilation resistance.
The utility model can also be arranged to overall structure with the mixing chamber of water jet air ejectors at different levels, being that the mixing chamber of water jet air ejector 2 at different levels is horizontal or hoop is fixedly connected is integral, simultaneously suction port can be arranged on the bottom of mixing chamber, a side of diffuser pipe, increase the mechanical strength of water jet air ejector 2 like this, economical with materials, reduce and take up an area of the space, improve working life.
This shows that the utlity model has rational in infrastructurely, WATER AS FLOW MEDIUM heats up slow, working media is difficult for vaporization, and the pumping efficiency height is guaranteed the characteristics such as vacuum of condenser.
Claims (5)
1. the vaccum-pumping equipment of a turbine condenser, it is characterized in that: comprise at least two jetting air exhauster, described jetting air exhauster comprises water tank (1) and water jet air ejector (2), water tank (1) is connected the below of water jet air ejector (2), water pump (3) is connected with the water tank (1) of the first order by pipeline, be connected with adjustment valve (8) by STEAM TRAP (7) between water tanks at different levels (1), the other end of water pump (3) all is connected with each water jet air ejector (2) by pipeline, and make WATER AS FLOW MEDIUM between the water tank (1) of each jetting air exhauster and water jet air ejector (2), form the closed circulation water route; Described water jet air ejector (2) comprises nozzle (4), mixing chamber and diffuser pipe (5), nozzle (4) is arranged on the top in the mixing chamber, its upper end is communicated with the feed-water end of circulation waterway pipeline, on the mixing chamber sidewall, spout place, nozzle (4) lower end has suction port, suction port is connected with suction tude (6); Described diffuser pipe (5) is connected the mixing chamber below, and diffuser pipe (5) lower end is connected with water tank (1); Have relief opening on water tank (1) top, the relief opening of previous stage water tank (1) is communicated with formation and is connected in series with the suction tude (6) of the jetting air exhauster of next stage; The suction tude (6) of the jetting air exhauster of the first order is provided with cooler (10), the other end of cooler (10) is connected with vapour condenser by pipeline, described cooler (10) bottom is provided with header tank (11), and header tank (11) is connected with vapour condenser with STEAM TRAP (7) by pipeline; In the end the water tank of one-level jetting air exhauster (1) is provided with flow-off and water supplement port.
2. the vaccum-pumping equipment of turbine condenser according to claim 1, it is characterized in that: the front side of described water pump (3) or rear side are provided with filter (9).
3. the vaccum-pumping equipment of turbine condenser according to claim 1 is characterized in that: be provided with the mixing waste pipe of same inner diameter in described diffuser pipe (5) below, diffuser pipe (5) is connected with water tank (1) by the mixing waste pipe of below.
4. the vaccum-pumping equipment of turbine condenser according to claim 1, it is characterized in that: float-ball type safety check (12) is set on the suction tude between cooler and the vapour condenser, this safety check (12) comprises ball float (33), positioning ring (31), valve block (32) and bringing into, the housing of air outlet (35), described positioning ring (31) is horizontally fixed on middle part in the housing (35), positioning ring (31) is plate-like, its outer rim shape is corresponding with housing (35) cavity shape, its center is provided with positioning hole, positioning ring (31) but disk body be provided with the space that at least two supplied gas are passed through, described ball float (33) is arranged on the below of positioning ring (31), ball float (33) top is provided with connecting rod, small end passes from positioning hole, small end is provided with anti-fall, anti-fall greater than positioning hole, be provided with valve block (32) at the middle part of connecting rod, valve block (32) is slightly less than positioning ring (31), in valve block (32) below, the arranged outside of ball float (33) has ball float guide channel (34), ball float guide channel (34) is fixedlyed connected with housing (35), ball float guide channel (34) but be provided with the space that supplied gas is passed through.
5. the vaccum-pumping equipment of turbine condenser according to claim 1 and 2, it is characterized in that: the mixing chamber of water jet air ejectors at different levels is arranged to overall structure, and the mixing chamber of air ejector promptly at different levels is horizontal or hoop is fixedly connected is integral.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202710974U CN201599260U (en) | 2009-11-27 | 2009-11-27 | Vacuum extractor of turbine condenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202710974U CN201599260U (en) | 2009-11-27 | 2009-11-27 | Vacuum extractor of turbine condenser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201599260U true CN201599260U (en) | 2010-10-06 |
Family
ID=42810313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202710974U Expired - Fee Related CN201599260U (en) | 2009-11-27 | 2009-11-27 | Vacuum extractor of turbine condenser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201599260U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305558A (en) * | 2011-08-11 | 2012-01-04 | 福建大源节能环保科技有限公司 | Energy-saving system and method of steam turbine condenser adopting vacuum self-sucking mode to substitute for water replenishing pump |
| CN114893261A (en) * | 2022-05-07 | 2022-08-12 | 新乡市汇能玉源发电有限公司 | Efficient steam turbine water jet air exhaust system control device |
-
2009
- 2009-11-27 CN CN2009202710974U patent/CN201599260U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305558A (en) * | 2011-08-11 | 2012-01-04 | 福建大源节能环保科技有限公司 | Energy-saving system and method of steam turbine condenser adopting vacuum self-sucking mode to substitute for water replenishing pump |
| CN114893261A (en) * | 2022-05-07 | 2022-08-12 | 新乡市汇能玉源发电有限公司 | Efficient steam turbine water jet air exhaust system control device |
| CN114893261B (en) * | 2022-05-07 | 2023-12-08 | 新乡市汇能玉源发电有限公司 | Efficient control device for water injection and air extraction system of steam turbine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101006 Termination date: 20121127 |