CN207109776U - Riverine/extra large power plant open circulation water system rotary sieve - Google Patents

Abstract

Power plant corollary equipment field is the utility model is related to, particularly a kind of riverine/extra large power plant open circulation water system rotary sieve.For existing rotary sieve because rubbish attachment is clear not to wash clean influence operation, the problems such as causing to stop transport and damaging water circulating pump, the utility model provides riverine/extra large power plant open circulation water system rotary sieve, including concrete pedestal, annular filter screen, drive the sprocket transmission device that annular filter screen rotates and rinse the rinse water arrangement of annular filter screen, the guide rail and pulley of motion guide are provided between annular filter screen and pedestal, the guide rail includes main guide rail and secondary guide rail, pulley includes head pulley and auxiliary pulley, rinse water arrangement includes can be simultaneously from multiple nozzles on annular filter screen inner and outer water outlet flushing filtering net plate two sides.The utility model can effectively strengthen filter screen web plate anti-pressure ability and improve rotary sieve operational reliability, and cleaning attachment rubbish effect is good, so that ensure also can safe and highly efficient operation under severe cycle water operating mode.

Description

Riverine/extra large power plant open circulation water system rotary sieve

Technical field

Power plant corollary equipment field is the utility model is related to, particularly a kind of riverine/extra large power plant open circulation water system System rotary sieve.

Background technology

The circulation of existing large-size thermal power plant mainly cools down turbine low pressure cylinder steam discharge, maintains condenser true Sky, the effect of the waste heat of unit cold end system is taken away, the circulation is the most important subsidiary engine equipment of power plant, for removing Rubbish in recirculated water, to ensure that water circulating pump, circulating water pipeline and condenser do not block, it is ensured that its safe and efficient fortune OK.Dirt remover for trash rack and rotation are relied primarily on for the supporting open circulation water system decontamination in power plant building in along the river with seashore Filter screen, wherein dirt remover for trash rack intercept removing seawater and brought into the larger rubbish between water, dirt and various floating objects, rotation filter Host will remove the seawater rubbish by trash rack, dirt and various floating objects, it is ensured that the seawater into water circulating pump meets to follow The requirement of ring water pump, especially rotary sieve are as last duct device of rubbish in seawater is intercepted, and its security reliability is for electricity Factory's reliability has material impact.Part river, the increasing environmental pollution of seashore water sources ground, cause the workload of rotary sieve remote Super initial designs are horizontal, and filter gauze cleaning is ineffective, is attached to largely be difficult to the rubbish washed down on the web plate of filter screen, in net Plate influent side forms water-head with water outlet side, and when rubbish is more in seawater, the water-head of sieve plate both sides is even up to a 2m left sides The right side, the pressure increase that sieve plate is born, when the load of sieve plate reaches certain value, rotary sieve load excessive will stop transport, filter Web plate is difficult to bear big pressure from guide rail to depart from, and big flow in the seawater short time is poured into the damage of water circulating pump entrance to circulation Water pump, ultimately result in power plant lose recirculated water and cancel closedown, the safe operation of serious threat power plant.

Utility model content

The technical problems to be solved in the utility model and the technical assignment proposed are to solve existing rotary sieve because rubbish Attachment sieve plate, which does not wash clean clearly, to be influenceed normal operation or even to cause to stop transport, and sieve plate be pressurized it is excessive depart from from guide rail cause Seawater pours in rapidly damage water circulating pump and triggers the problems such as power plant's cancel closedown, there is provided riverine/extra large power plant open type is followed Ring water system rotary sieve, the rotary sieve can effectively strengthen filter screen web plate anti-pressure ability, improve rotary sieve operation Reliability, and fully cleaning is attached to the rubbish in sieve plate, ensures that rotary sieve can also pacify under severe cycle water operating mode Full Effec-tive Function.

The utility model solves the technical scheme that technical problem uses：Riverine/extra large power plant open circulation water system rotation Turn filter screen, including the sprocket transmission device that rotates of concrete pedestal, annular filter screen, driving annular filter screen and rinse annular filter screen Rinse water arrangement, the annular filter screen are made up of polylith sieve plate along the splicing of annular filter screen moving direction, annular filter screen and pedestal Between be provided with the guide rail and pulley of motion guide, it is characterized in that the guide rail includes along annular filter screen mobile route being located at annular filter Medianly zygomorphic main guide rail and the secondary guide rail on the inside of annular filter screen are netted, the main guide rail is on pedestal, secondary guide rail On the auxiliary frame on the inside of annular filter screen, the auxiliary frame is fixed with pedestal, and the pulley includes being located at annular filter screen The auxiliary pulley of inner surface in the middle part of the head pulley and annular filter screen of both sides of the edge, the rinse water arrangement includes can be simultaneously from annular filter Net multiple nozzles on inner and outer water outlet flushing filtering net plate two sides.The utility model is medianly zygomorphic by annular filter screen Secondary guide rail on the inside of main guide rail and annular filter screen matches with the main roller on annular filter screen, secondary roller, forms kinematic pair at three and matches somebody with somebody Close and annular filter screen motion is oriented to, the secondary roller wherein on the inside of annular filter screen can be done to the filter screen panel stiffness of annular filter screen Support is strengthened, and weakens water-head inside and outside annular filter screen and excessive pressure harmful effect is caused to sieve plate, improve rotary sieve Work reliability of operation, additionally aid prevent sieve plate be pressurized it is excessive depart from guide rail cause seawater largely to pour into water circulating pump Entrance damages water circulating pump；Rinse water arrangement includes multiple nozzles and from the water outlet simultaneously of annular filter screen inner side and outer side, to filter screen Two sides synchronous developing inside and outside plate, the rubbish adhered in sieve plate is removed, reduce by adhering to recrementitious both sides water-head, reduce Sieve plate bears pressure, eliminates the potential safety hazard of sieve plate abjection track, ensures rotary sieve under severe cycle water operating mode Also can safe and highly efficient operation.During rotary sieve work described in the utility model, water outlet among the water inlet of annular filter screen both sides, specifically It is the outside on annular filter screen the latter half both sides while intakes, the water after filtering is flowed on the inside of annular filter screen, and it is right on one side to be re-introduced into The culvert discharge opened up on the coagulation pedestal answered, this is the conventional arrangement of circulation rotary sieve and is prior art, It will not be repeated here.In use, the main guide rail of both sides all answers riveting to enter in on-site concrete pedestal, to strengthen the firm of annular filter screen Degree.

As further improving and supplementing to above-mentioned technical proposal, the utility model uses following technical measures：It is described Auxiliary frame includes the framework at before and after annular filter screen inner side symmetrical two, and framework is a meter word truss at described two, and Connected at two between framework by rice word truss.It is all rice word truss, and between the two also by rice that auxiliary frame, which has at two, Word truss is connected, and rice word truss can effectively strengthen frame stiffness, it is ensured that the secondary guide rail on framework can bear sieve plate and lead to The pressure of secondary roller transmission is crossed, ensures secondary roller normal smooth rotation rolled with annular filter screen on secondary guide rail.

Some rib reinforcements are set in the sieve plate, and the rib reinforcement is perpendicular to sieve plate horizontal span side To and it is parallel uniform.Because annular filter screen is that sieve plate in rotational direction splices composition, when the horizontal span chi of monolithic sieve plate When very little larger, perpendicular to sieve plate horizontal span direction, parallel uniform multiple rib reinforcements can effectively improve single sieve plate Rigidity, sieve plate is set to keep original shape when being pressurized without producing obvious deformation.

The rinse water arrangement includes inner nozzle at outer nozzle at one on the outside of annular filter screen and one on the inside of annular filter screen, The high settings such as the outer nozzle and inner nozzle simultaneously can be to annular filter screen top vertically inside and outside the same sieve plate of down direction Two sides hydroblasting, the water outlet direction of the inner nozzle perpendicular to process sieve plate inner surface, the water outlet direction of outer nozzle to Under favour by sieve plate outer surface, and the acute angle scope that outer nozzle water outlet direction and the sieve plate outer surface of process are formed Between 30 °~45 °.Coordinated by nozzle at two and thoroughly remove the rubbish being attached in sieve plate, avoid adhering in sieve plate Excessive rubbish causes sieve plate influent side and water outlet side because the excessive and caused big hydraulic pressure of water-head, prevents sieve plate comes off from making The potential safety hazard of damage water circulating pump is poured in into a large amount of filtered seawater.During work, rinse water arrangement passes through inside and outside two sprays Mouth makes the rubbish loose or dislocation of not easy-clear in sieve plate, effect to two sides synchronous developing inside and outside the same sieve plate of process More preferably, the rubbish wherein in inner nozzle hydroblasting sieve plate makes its pine for the one side cleaning of the more existing water spray only on the outside of sieve plate Dynamic, the rubbish loosened in outer nozzle hydroblasting sieve plate makes it be completely separated with sieve plate downwards；Two nozzle rinse work When to annular filter screen top vertically down direction same sieve plate spray water, avoid annular filter screen the latter half filtration Section, is rinsed cleaning before descending sieve plate goes downwards to filtration position.

The outside of the annular filter screen is provided with garbage reclamation groove, and garbage reclamation groove is located at immediately below outer nozzle, the rubbish The bottom land of rubbish accumulator tank is inclined-plane, and inclined-plane tilts from high to low along outer nozzle water outlet direction, and the garbage reclamation groove is right Answer and pour spout is provided with inclined-plane low level, a garbage reclamation well is set below pour spout.Corresponded on the outside of annular filter screen under outer nozzle Side sets garbage reclamation groove, collects and the rubbish to get off is rinsed in sieve plate, wherein the bottom land of accumulator tank is for inclined-plane and along outer spray Mouth water outlet direction tilts from high to low, and washing the rubbish to get off can take advantage of a situation along in the same direction from accumulator tank under the effect of outer nozzle rinse water High-order one end is slipped to low level one end, is then fallen into from pour spout in the garbage reclamation well of lower section, so that rubbish centrally disposes, institute Stating garbage reclamation well can be removed by manually periodically shoveling to clear.

One layer of screen pack is provided with the garbage reclamation well.One layer of screen pack in garbage reclamation well can be to rushing in sieve plate Wash down the rubbish for removing and carry out separation of solid and liquid again, the water isolated can be with recycling, and solid is by manually periodically shoveling reason Remove.

The sprocket transmission device includes big sprocket wheel, minor sprocket and chain, the big sprocket wheel and motor deceleration phase Even, minor sprocket is distributed along annular filter screen mobile route sets and is connected with big sprocket wheel, and chain is located at sieve plate laterally left and right Both sides of the edge simultaneously match with minor sprocket, and p-type sealing strip is provided between adjacent sieve plate.Chain gear transmission dress used in annular filter screen Put including big sprocket wheel, minor sprocket and chain, motor, which slows down, during work drives big sprocket wheel to rotate, and big sprocket wheel drives small edge The minor sprocket of annular filter screen mobile route distribution rotates, and minor sprocket drives chain movement, and chain drags connected sieve plate, Whole annular filter screen is continuously rotated to entering water filtration；Sealed between adjacent screen plate by p-type sealing strip, p-type sealing strip is adapted to Cycle water uses compared with bad working environments environment, though into smaller rubbish, sieve plate also can normal movement operation, be not in card Dead phenomenon, the above are all existing conventional techniques, are repeated no more again.

The utility model is matched annular filter screen by main guide rail and secondary guide rail and the main roller on annular filter screen, secondary roller Motion is oriented to, and does support reinforcing to the rigidity of sieve plate, weakens water-head inside and outside annular filter screen and sieve plate is made Into excessive pressure harmful effect, rotary sieve work reliability of operation is improved, prevents sieve plate compression is excessive from departing from guide rail Seawater is caused largely to pour into water circulating pump entrance damage water circulating pump, while rinse water arrangement is rushed simultaneously to two sides inside and outside sieve plate Wash, fully remove the rubbish adhered in sieve plate, reduce by adhering to recrementitious both sides water-head, reduce sieve plate and bear to press Power, the potential safety hazard of sieve plate abjection track is eliminated, ensure that rotary sieve also can be safe and efficient under severe cycle water operating mode Operation.

Brief description of the drawings

Fig. 1：The utility model structure diagram.

Fig. 2：Transverse sectional view of the present utility model.

Fig. 3：Auxiliary frame structural representation described in the utility model.

Fig. 4：Garbage reclamation groove described in the utility model and garbage reclamation well schematic diagram.

Fig. 5：Annular filter screen side schematic view described in the utility model（Arrow is nozzle water outlet direction in figure）.

In figure：1. pedestal, 2. annular filter screens, 3. sieve plates, 4. main guide rails, 5. secondary guide rails, 6. auxiliary frames, 7. main cunnings Wheel, 8. auxiliary pulley, 9. meters of word truss, 10. rib reinforcements, 11. big sprocket wheels, 12. minor sprockets, 13. chains, 14. outer nozzles, 15. inner nozzle, 16. garbage reclamation grooves, 17. inclined-planes, 18. garbage reclamation wells, 19. screen packs.

Embodiment

Explanation and embodiment are described further to the utility model below in conjunction with the accompanying drawings.

As shown in Fig. 1~5, riverine/extra large power plant open circulation water system rotary sieve, including concrete pedestal 1, ring The sprocket transmission device and the rinse water arrangement of flushing annular filter screen 2 that shape filter screen 2, driving annular filter screen 2 rotate, the annular filter Net 2 is made up of polylith sieve plate 3 along the splicing of the moving direction of annular filter screen 2, and motion guide is provided between annular filter screen 2 and pedestal 1 Guide rail and pulley, the guide rail includes along the mobile route of annular filter screen 2 being located at 2 medianly zygomorphic main guide rail of annular filter screen 4 and the secondary guide rail 5 located at the inner side of annular filter screen 2, the main guide rail 4 is on pedestal 1, and secondary guide rail 5 is located at the inner side of annular filter screen 2 Auxiliary frame 6 on, the auxiliary frame 6 is fixed with pedestal 1, the pulley include located at the both sides of the edge of annular filter screen 2 master The auxiliary pulley 8 of pulley 7 and the middle part inner surface of annular filter screen 2, the rinse water arrangement include can simultaneously from the inner side of annular filter screen 2 with Multiple nozzles on the two sides of outside water outlet flushing filtering net plate 3.During work, the outside water inlet of annular filter screen the latter half, inner side water outlet, Secondary guide rail and the main roller on annular filter screen, secondary roller on the inside of the medianly zygomorphic main guide rail of annular filter screen and annular filter screen Match, form kinematic pair cooperation at three and annular filter screen motion is oriented to, the secondary roller wherein on the inside of annular filter screen can be right The filter screen panel stiffness of annular filter screen is done support and strengthened, and weakens water-head inside and outside annular filter screen and causes excessive pressure to sieve plate Harmful effect, rotary sieve work reliability of operation is improved, additionally aiding prevents the sieve plate excessive disengaging with guide rail that is pressurized from making Water circulating pump entrance damage water circulating pump is largely poured into seawater；Rinse water arrangement includes multiple nozzles and on the inside of annular filter screen With outside water outlet simultaneously, to two sides synchronous developing inside and outside sieve plate, the rubbish adhered in sieve plate is removed, is reduced by attachment rubbish Caused by both sides water-head, reduce sieve plate and bear pressure, eliminate the potential safety hazard of sieve plate abjection track, ensure rotary sieve Also can safe and highly efficient operation under severe cycle water operating mode.During rotary sieve work described in the utility model, annular filter screen The outside water inlet of the latter half, inner side water outlet；The main guide rail of both sides all answers riveting to enter in on-site concrete pedestal, to strengthen annular filter The rigidity of net.

The auxiliary frame 6 includes the framework at before and after the inner side of annular filter screen 2 symmetrical two, and framework is at described two Rice word truss, and connected at two between framework by rice word truss 9.It is all rice word truss that auxiliary frame, which has at two, and two It is connected between person also by rice word truss, rice word truss can effectively strengthen frame stiffness, it is ensured that the secondary guide rail energy on framework Pressure of the sieve plate by secondary roller transmission is enough born, it is steady with annular filter screen to ensure that secondary roller normally rolls on secondary guide rail Rotate.

Some rib reinforcements 10 are set in the sieve plate 3, and the rib reinforcement perpendicular to filter screen plate level across Degree direction is simultaneously parallel uniform.Because annular filter screen is that sieve plate in rotational direction splices composition, when monolithic sieve plate laterally across When degree size is larger, perpendicular to sieve plate horizontal span direction, parallel uniform multiple rib reinforcements can effectively improve single filter Web plate rigidity, sieve plate is set to keep original shape when being pressurized without producing obvious deformation.

The rinse water arrangement is included at one of outer nozzle 14 and the inner side of annular filter screen 2 at the one of the outside of annular filter screen 2 The high setting such as nozzle 15, the outer nozzle 14 and inner nozzle 15 simultaneously can be to the same of the top of annular filter screen 2 vertically down direction Two sides hydroblasting inside and outside block sieve plate 3, the water outlet direction of the inner nozzle 15 perpendicular to process the inner surface of sieve plate 3, outside The water outlet direction of nozzle 14 is tilted down in the outer surface of sieve plate 3 of process, and the filter screen of the water outlet direction of outer nozzle 14 and process The sharp angle α scope that the outer surface of plate 3 is formed is between 30 °~45 °, and sharp angle α is preferably 45 ° in the present embodiment.During work, flushing water Device to two sides synchronous developing inside and outside the same sieve plate of process, makes in sieve plate not easy-clear by inside and outside two nozzles Rubbish loose or dislocation, the one side cleaning of the more existing water spray only on the outside of sieve plate of effect more preferably prevent sieve plate due to clearing up not Totally also adhere to excessive rubbish and cause sieve plate influent side and water outlet side because the excessive and caused big hydraulic pressure of water-head, prevent from filtering Web plate, which comes off, causes a large amount of filtered seawater to pour in the potential safety hazard for damaging water circulating pump, wherein inner nozzle hydroblasting filter screen Rubbish on plate makes its loosening, and the rubbish loosened in outer nozzle hydroblasting sieve plate makes it be completely separated with sieve plate downwards； The same sieve plate of annular filter screen top vertically down direction is sprayed water during the work of two nozzle rinses, avoids annular filter screen The latter half filtration section, is rinsed cleaning, the present embodiment before descending sieve plate goes downwards to filtration position In inside and outside two nozzles be that the sieve plate of the annular filter screen top side vertically extreme higher position of down direction is rinsed clearly Reason.

The outside of the annular filter screen 2 is provided with garbage reclamation groove 16, and garbage reclamation groove 16 is located at immediately below outer nozzle 14, The bottom land of the garbage reclamation groove 16 is inclined-plane 17, and inclined-plane 17 tilts from high to low along the water outlet direction of outer nozzle 14, described Garbage reclamation groove 16 is provided with pour spout at the low level of inclined surface 17, and a garbage reclamation well 18, the rubbish are set below pour spout One layer of screen pack 19 is provided with rubbish recovery well 18.Garbage reclamation groove is set below corresponding outer nozzle on the outside of annular filter screen, collects filter The rubbish to get off is rinsed on web plate, because the bottom land of accumulator tank from high to low tilts for inclined-plane and along outer nozzle water outlet direction, The rubbish that gets off is washed to take advantage of a situation under the effect of outer nozzle rinse water along being slipped to low level one end from accumulator tank high position one end in the same direction, then from Pour spout is fallen into the garbage reclamation well of lower section, facilitates rubbish to centrally dispose, the garbage reclamation well can be by manually periodically shoveling reason Remove；One layer of screen pack in garbage reclamation well can carry out separation of solid and liquid again to purging the rubbish to get off in sieve plate, point The water separated out can be removed with recycling, solid by manually periodically shoveling to clear.

The sprocket transmission device includes big sprocket wheel 11, minor sprocket 12 and chain 13, the big sprocket wheel 11 and driving electricity Machine, which slows down, to be connected, and minor sprocket 12 is distributed along the mobile route of annular filter screen 2 to be set and be connected with big sprocket wheel 11, and chain 13 is located at The horizontal left and right sides edge of sieve plate 3 simultaneously matches with minor sprocket 12, and p-type sealing strip is provided between adjacent sieve plate 3.Annular filter Net sprocket transmission device used includes big sprocket wheel, minor sprocket and chain, and motor, which slows down, during work drives big sprocket wheel turn Dynamic, big sprocket wheel drives the small minor sprocket along the distribution of annular filter screen mobile route to rotate, and minor sprocket drives chain movement, and chain drags Connected sieve plate is moved, whole annular filter screen is continuously rotated to entering water filtration；Pass through p-type sealing strip between adjacent screen plate Sealing, p-type sealing strip is adapted to cycle water to be used compared with bad working environments environment, even if into smaller rubbish, sieve plate also can be normal Mobile operation, is not in stuck phenomenon, the above is all existing conventional techniques.

Claims (7)

1. riverine/extra large power plant open circulation water system rotary sieve, including concrete pedestal（1）, annular filter screen（2）, drive Dynamic annular filter screen（2）The sprocket transmission device and flushing annular filter screen of rotation（2）Rinse water arrangement, the annular filter screen（2） By polylith sieve plate（3）Along annular filter screen（2）Moving direction splicing composition, annular filter screen（2）And pedestal（1）Between be provided with motion The guide rail and pulley of guiding, it is characterized in that the guide rail is included along annular filter screen（2）Mobile route is located at annular filter screen（2）Left and right Monosymmetric main guide rail（4）With located at annular filter screen（2）The secondary guide rail of inner side（5）, the main guide rail（4）Located at pedestal（1） On, secondary guide rail（5）Located at annular filter screen（2）The auxiliary frame of inner side（6）On, the auxiliary frame（6）With pedestal（1）It is fixed, The pulley includes being located at annular filter screen（2）The head pulley of both sides of the edge（7）And annular filter screen（2）The auxiliary pulley of middle part inner surface （8）, the rinse water arrangement includes can be simultaneously from annular filter screen（2）Inner and outer water outlet flushing filtering net plate（3）Two sides it is more Individual nozzle.

2. riverine/extra large power plant open circulation water system rotary sieve according to claim 1, it is characterized in that described auxiliary Help framework（6）Including located at annular filter screen（2）Framework at symmetrical two before and after inner side, framework is a meter word truss at described two, And pass through rice word truss at two between framework（9）Connection.

3. riverine/extra large power plant open circulation water system rotary sieve according to claim 1, it is characterized in that the filter Web plate（3）It is upper that some rib reinforcements are set（10）, and the rib reinforcement perpendicular to sieve plate horizontal span direction and is put down Row is uniform.

4. riverine/extra large power plant open circulation water system rotary sieve according to claim 1, it is characterized in that the punching Washing equipment includes annular filter screen（2）Outer nozzle at the one of outside（14）And annular filter screen（2）Inner nozzle at the one of inner side（15）, The outer nozzle（14）And inner nozzle（15）Etc. high setting and can be to annular filter screen（2）The same of top vertically down direction Sieve plate（3）Inside and outside two sides hydroblasting, the inner nozzle（15）Water outlet direction perpendicular to process sieve plate（3）Interior table Face, outer nozzle（14）Water outlet direction tilt down sieve plate in process（3）Outer surface, and outer nozzle（14）Water outlet direction and The sieve plate of process（3）The acute angle scope that outer surface is formed is between 30 °~45 °.

5. riverine/extra large power plant open circulation water system rotary sieve according to claim 4, it is characterized in that the ring Shape filter screen（2）Outside be provided with garbage reclamation groove（16）, and garbage reclamation groove（16）Positioned at outer nozzle（14）Underface, the rubbish Rubbish accumulator tank（16）Bottom land be inclined-plane（17）, and inclined-plane（17）Along outer nozzle（14）Water outlet direction tilts from high to low, institute State garbage reclamation groove（16）In inclined surface（17）Pour spout is provided with low level, a garbage reclamation well is set below pour spout （18）.

6. riverine/extra large power plant open circulation water system rotary sieve according to claim 5, it is characterized in that the rubbish Rubbish recovery well（18）Inside it is provided with one layer of screen pack（19）.

7. riverine/extra large power plant open circulation water system rotary sieve according to one of claim 1 to 6, its feature It is that the sprocket transmission device includes big sprocket wheel（11）, minor sprocket（12）And chain（13）, the big sprocket wheel（11）With driving Decelerating through motor is connected, minor sprocket（12）Along annular filter screen（2）Mobile route distribution is set and and big sprocket wheel（11）Drive connection, chain Bar（13）Located at sieve plate（3）Laterally left and right sides edge and and minor sprocket（12）Match, adjacent sieve plate（3）Between be provided with P-type sealing strip.