Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D36/00—Filter circuits or combinations of filters with other separating devices
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
  • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
  • B04C7/00—Apparatus not provided for in group B04C1/00, B04C3/00, or B04C5/00; Multiple arrangements not provided for in one of the groups B04C1/00, B04C3/00, or B04C5/00; Combinations of apparatus covered by two or more of the groups B04C1/00, B04C3/00, or B04C5/00
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
  • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
  • B01D29/117—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements arranged for outward flow filtration
  • B01D29/118—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements arranged for outward flow filtration open-ended
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
  • B01D29/60—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor integrally combined with devices for controlling the filtration
  • B01D29/606—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor integrally combined with devices for controlling the filtration by pressure measuring
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
  • B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
  • B01D29/90—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for feeding
  • B01D29/908—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for feeding provoking a tangential stream
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
  • B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
  • B01D29/92—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for discharging filtrate
  • B01D29/925—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for discharging filtrate containing liquid displacement elements or cores
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
  • B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
  • B01D29/94—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for discharging the filter cake, e.g. chutes
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
  • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
  • B04C3/00—Apparatus in which the axial direction of the vortex flow following a screw-thread type line remains unchanged ; Devices in which one of the two discharge ducts returns centrally through the vortex chamber, a reverse-flow vortex being prevented by bulkheads in the central discharge duct
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
  • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
  • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
  • B04C5/08—Vortex chamber constructions
  • B04C5/10—Vortex chamber constructions with perforated walls
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
  • F28F19/01—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using means for separating solid materials from heat-exchange fluids, e.g. filters

Definitions

• the invention relates to a device for separating solid dirt particles from cooling water for power plants and. Like. Which from a sieve drum fixedly arranged in a cylinder housing to form a bing chamber for the axial introduction of the helically flowing cooling water, a drain pipe for the cooling water attached tangentially to the cylinder housing and a drain pipe for the dirt particles connected to the interior of the sieve drum and provided with a valve consists.
• cooling water To cool heat exchangers in steam power plants or other power plant facilities, large amounts of cooling water are required to prevent damage and clogging of the system parts of solid dirt particles, such as pieces of wood, plastic parts, leaves, blades of grass, bushes and the like. Like. Must be cleaned. While coarse dirt particles of this type are retained by upstream rakes, finer dirt particles are found for separation Chen devices use, in which the cooling water flows either from the outside in or from the inside out through a sieve drum fixed in a cylinder housing. In a known embodiment of this type, the cooling water by vortex organs, for. B. vortex valves or a tangentially flowed prechamber accelerated helically and introduced axially into the screening drum.
• vortex organs for. B. vortex valves or a tangentially flowed prechamber
• the cooling water flows outwards through the sieve drum into an annular chamber, from which it flows out via a tangentially attached drain pipe.
• the dirt particles accumulating in the sieve drum are washed out at certain intervals by briefly opening a discharge pipe connected to the interior of the sieve drum through a valve.
• the function of such a separator presupposes that the sieve drum is flowed against at its inner jacket by the cooling water at an acute angle, so that the dirt particles are rinsed by the tangential forces from the jacket surface into the central we and do not clog the screen openings.
• the invention is based on the object of designing the device in such a way that the degree of performance is substantially improved and deposition or partial blockage by dirt particles in the region of the discharge opening is prevented.
• a baffle is arranged which coaxially abuts with an edge on the outer jacket of the screening drum and extends in the direction of flow with increasing distance from the Siebtrom mel.
• the arrangement of the guide plate in the annular space has the essential advantage that the pressure difference between the drain opening and the interior of the screen drum is distributed uniformly over the entire circumference of the screen drum and no longer preferably acts on the surface of the screen drum opposite the drain opening. As a result, a uniform rotational flow is achieved and a direct outflow of the cooling water through the sieve drum into the outflow opening is thus prevented.
• the design and arrangement of the guide plate can vary depending on the operating conditions and flow conditions, and it can extend over about 1/3 to 2/3 of the circumference of the screening drum; it preferably extends over approximately half the circumference of the screening drum.
• the angle between the guide plate and the outer jacket of the screen drum suitably corresponds approximately to the flow angle of the cooling water on the inner jacket of the screen drum.
• the favorable distribution of the pressure conditions can be further optimized in that the screen drum is arranged eccentrically in the cylinder housing, the smallest radial distance between the two components being on the side where the free edge of the guide plate is located.
• the invention is shown in one embodiment; it shows: 1 is a device for separating solid dirt particles from cooling water in a plan,
• FIG. 2 shows the object of FIG. 1 in a side view, partially in section
• Fig. 3 shows the subject of Fig. 2 in a medium cross section in the area of the screen drum and the drain pipe and
• Fig. 4 shows the block diagram of a cooling water system with the device shown in Figs. 1 to 3.
• FIGS. 1 to 3 of a device for separating solid dirt particles from cooling water consists essentially of a cylinder housing 1, in which a sieve drum 2 is arranged axially such that an annular chamber 3 is formed between the two components.
• the sieve drum can have a hole percentage of 40%, for example.
• a drain pipe 4 is attached to the cylinder housing in such a way that it is laterally offset from the central axis and ensures a tangential outflow.
• a cylindrical dome 5 is attached, which is provided with a tangentially extending inflow tube 6.
• the cooling water flows through the inflow pipe 6 into the dome 5 and undergoes a helical rotational movement there, so that it flows helically into the interior of the screening drum 2.
• a discharge pipe 8 is attached, which is equipped with a valve 15 explained in more detail below.
• a baffle 10 is arranged according to the invention, which is semicircular is formed and rests with an edge 11 on the outer jacket of the screen drum 2, while the other edge 12 has an increasing distance from the screen drum in the flow direction.
• a crescent-shaped space is formed between the screen drum 2 and guide plate 10.
• the angle 06 between the baffle plate 10 and the sieve drum 2 should preferably correspond to the incident angle ⁇ of the cooling water with which the cooling water flows against the inner jacket of the sieve drum 2.
• the baffle 10 has a semicircular cross-section and extends over half the circumference of the screen drum 2.
• the free edge 12 lying in the direction of flow has a distance a from the screen drum 2, which preferably corresponds to half the distance b between the screen drum 2 and cylinder housing 1 .
• the guide plate 10 can also comprise a smaller or larger area of the screening drum 2.
• the baffle plate 10 screens the drum 2 with respect to the discharge opening 9 and has the aforementioned aerodynamic properties.
• the cooling water mixed with dirt particles arrives during normal cleaning operation through the inflow pipe 6 into the dome 5, is brought into a rotational movement there and flows helically axially into the screening drum 2. There it flows onto the inner surface of the screening drum 2 with the angle ⁇ . While the water flows through the sieve drum 2, dirt particles are retained and, as a result of the rotational flow, flowed from the inner lateral surface into the axial vertebra. Due to the arrangement of the guide plate 10, the lower pressure prevailing at the discharge opening 9 cannot have an immediate effect on the opposite surface of the screen drum. Rather, the cooling water enters in this area the crescent-shaped space 13 in plan.
• valve 15 which is assigned to the drain pipe 8 (cf. also FIG. 4), is opened and a brief rinsing process is carried out. After this valve 15 is closed, the normal separation process takes place again.
• a cooling water system is shown in a block diagram.
• This block diagram shows that the cooling water leaving the drain pipe 4 is passed through a heat exchanger 14 of a thermal power plant or the like.
• the drain line is designated 17.
• the valve 15 assigned to the discharge pipe 8 is controlled by a servomotor 16, this servomotor 16 being controlled, for example, by a pressure difference measurement between the inflow pipe 6 and the outflow pipe 4.
• the valve 15 can wash out the dirt particles What water bypassing the heat exchanger 14 are passed directly into the drain line 17.
• the guide plate can also only extend over 1/3 or 2/3 of the circumference of the screening drum. The distance a would then be adjusted accordingly.
• the discharge pipe 8 can also be arranged laterally on the cylinder housing 1 and connected tangentially to the screening drum 2.

Landscapes

• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
• Combined Means For Separation Of Solids (AREA)
• Cyclones (AREA)
• Physical Or Chemical Processes And Apparatus (AREA)
• Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
• Centrifugal Separators (AREA)
• Water Treatment By Sorption (AREA)
• Physical Water Treatments (AREA)
• Treatment Of Liquids With Adsorbents In General (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=8189483

Family Applications (1)

Country Status (9)

Families Citing this family (20)

Citations (5)

Family Cites Families (11)

• 1982
  • 1982-04-26 AT AT82200496T patent/ATE17448T1/de not_active IP Right Cessation
  • 1982-04-26 DE DE8282200496T patent/DE3268494D1/de not_active Expired
  • 1982-04-26 EP EP82200496A patent/EP0093203B1/de not_active Expired
• 1983
  • 1983-04-02 AU AU13754/83A patent/AU541885B2/en not_active Ceased
  • 1983-04-02 WO PCT/EP1983/000099 patent/WO1983003780A1/de not_active Ceased
  • 1983-04-02 JP JP58501180A patent/JPS59500460A/ja active Granted
  • 1983-04-12 CA CA000425662A patent/CA1204390A/en not_active Expired
  • 1983-04-22 KR KR1019830001706A patent/KR870001286B1/ko not_active Expired
  • 1983-04-26 US US06/579,904 patent/US4551247A/en not_active Expired - Fee Related

Patent Citations (5)

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