DE102015107017A1 - Device for cleaning and associated method of open and closed fluid systems, in particular well systems, pipelines and boilers by means of a cavitation nozzle system - Google Patents

Abstract

The invention is based on the problem to provide a device and an associated method to safely and inexpensively remove existing in existing closed and open fluid systems Verkleerungen, incrustations, deposits and biofilms in the system parts and to dispose of the equipment to the outside of the system. The simplest variant of the device for cleaning fluid systems consists of a high-pressure pump (21) with cavitation nozzles 6 and corresponding connecting tubes. The device according to the invention for cleaning open fluid systems, in particular well systems by means of a cavitation nozzle system, consists of a cleaning head (2), which can be lowered and fixed into the well shaft (1), with a holding and connection system (3) which simultaneously serves as a media supply and removal system (3 ) and an integrated waste water pump (4), at least one camera (5) with lighting, at least one cavitation nozzle (6), centering rings (7) and at the bottom of the cleaning head (2) a collecting tray (8) and outside of the well shaft ( 1) a high-pressure fluid generating system (9) with a connection to the cleaning head (2). In the process of cleaning well systems, the cleaning head (2) is drained via a cable into the well shaft (1). Subsequently, the cavitation nozzles (6) are optimally aligned. Then, the high-pressure fluid generating system (9) is put into operation and sent a high-pressure stream (16) through the Kavitationsdüsen (6) for generating a Kavitationskegels (17) and thus set the cleaning process in motion. Removed particles and impurities are pumped out. After cleaning the first portion of the slot bridge filter (11), the cleaning head (2) is lowered further to clean the next ring sector. At the same time, a review of the previously cleaned sector will be carried out.

Description

Apparatus for cleaning and associated method of open and closed fluid systems, in particular open water systems, such as e.g. Wells, basins and piping, boilers u. a. by means of a cavitation nozzle system.

In Scripture WO 9402422 describes a method and the associated device for influencing water or the substances dissolved in water, preferably of calcium carbonate. In this case, electromagnetic energy, preferably electromagnetic waves in the microwave frequency range is entered into the water. They are coupled with a suitable apparatus in the liquid. At the same time, the effect of the electromagnetic wave generator and the flow of the liquid are measured and controlled.

In Scripture WO 0125152 describes a method and the associated apparatus for the cost-effective removal of existing limescale and rust deposits and other incrustations in water pipes and other water equipment parts. For this purpose, a special glass excitation vessel is used, at the bottom of a magnetron is arranged, which radiates microwaves into the interior of the excitation vessel. Due to the special design of a metal tube arranged in the upper region of the excitation vessel, a water vapor bell is generated during operation of the device. Resulting gas bubbles are conducted through the pipes into the pipe system to be cleaned, where they cause a degradation of the incrustations.

Another method and associated apparatus for treating water by pulsed electromagnetic radiation is known in the EP 0338697 explained. In this method, the so-called absorption / emission profile of the liquid is determined by electromagnetic signals. In the liquid electromagnetic signals between 0.1 kHz to 1000 MHz are introduced continuously or intermittently via arranged on the wall of the liquid system spark plugs.

In the DE 3920046 For the inner pipe cleaning intermittent pressure surges of a pulsating water-air mixture are used.

However, all of these methods and associated apparatus can not eliminate incrustations solidly deposited in the water systems. Most processes and devices can at best reduce the build-up or growth of deposits in the water facilities. In addition, the known devices for the removal of incrustations are not suitable for mobile use.

The invention is based on the problem to provide a device and an associated method to safely and inexpensively remove existing in existing closed and open fluid systems Verkleerungen, incrustations, deposits and biofilms in the system parts and to dispose of the equipment to the outside of the system.

The achievable with the present invention consist in particular that takes place by the inventive device which is connected to the fluid system to be cleaned, on physical way, a replacement of the existing incrustations and / or biofilms without the addition of chemical agents. The fluid system may continue to operate during the cleaning procedure of the device. The device according to the invention can be removed again from the system after completion of the cleaning work. In most cases, it is therefore only used intermittently at the corresponding facilities. Due to the relatively simple structure, but by the efficient effect of the device according to the invention can be made relatively inexpensive. This can be a cost-effective method for cleaning z. B. of wells as open fluid systems or of pipelines and boilers are offered as closed fluid systems.

The inventive device and advantageous embodiments of the device are described in claims 1 to 9. Claims 10 to 13 describe the method and method variants. The development according to claim 2 comprises an annular channel at which a plurality of cavitation nozzles are directed inwards or outwards. This increases the cleaning effect of the device. According to claim 3, a Kavitationsbehälter can be integrated into the fluid system. This has a fluid inlet opening and a fluid outlet opening preferably for closed fluid systems. The cavitation container has at least one cavitation nozzle, but preferably distributed around the circumference several cavitation nozzles, which are connected via one or more high-pressure lines with a high-pressure pump. The high pressure pump has a pipe as a supply line from the fluid system to the high pressure pump. Furthermore, the cavitation container advantageously has a vent valve. This vent valve is used to remove the microcrystal released carbon dioxide from the system. Smit is ensured irreversible microcrystallization.

In the development according to claim 4, a system extension can be at fluid-carrying closed systems with relatively small nominal widths The injection point may be required to prevent damage to the opposite walls.

In the device according to claim 5 is a device of open fluid systems, in particular wells. The device has a lowerable and fixable cleaning head with a holding and connection system, which is also designed as Medienzu- and -abführsytem. The device further has a dirty water pump, at least one camera with lighting, at least one cavitation nozzle, centering rings and at the bottom a collecting tray for dissolved dirt particles and outside the well shaft a high-pressure fluid generating system with a connection to the cleaning head.

In claim 6, as a modified variant of the device according to claim 5, in addition, the high-pressure fluid production plant be integrated in the cleaning head. As a result, the high-pressure fluid production plant does not have to be set up as an additional device next to the well system during a cleaning process.

According to claim 7, a sensor, advantageously extendable, arranged to the layer thickness measurement of the slot bridge filter, which can be used in particular during the verification process of the cleaning performed on the cleaning head.

In the development according to claim 8, the cavitation nozzles are evenly distributed on the cleaning head on the circumference of the cleaning head and adjustable in their distance from the slot bridge filter and with its radiation angle to the slot bridge filter.

This results in optimum cleaning over the entire surface area of the selected sector of the slit bridge filter, without individual sections of the sector being processed simultaneously.

According to claim 9, a replaceable, the Brunneninnenrohrdurchmesser adapted ring with adjustable cavitation nozzles is arranged on the cleaning head. Thus, a standardized cleaning head can be used in standardized Wellinnenrohrdurchmessern, which can be omitted in the otherwise incurred adjustment work at the cleaning.

The method for cleaning open fluid systems, in particular well systems, is described in claim 10. In the variant of the method according to claim 11, the extracted dirty water from the drip tray and in the gravel layer behind the slot bridge filter already in the cleaning head and not just outside the well system is filtered. For this purpose, however, a corresponding filter device must be installed in the cleaning head.

In a further variant of the method according to claim 12, the pressure flow is generated to check the cleaning of the dirty water pump or by switching to an additional pump. Are the pump values, such as. B. the flow rate per unit time known, thus individual measuring instruments can be omitted.

According to claim 13, the sensor can be used on the cleaning head to check the cleaning of the cleaned sector area with. As a result, additional values for cleaning can be determined, which allow a more accurate statement.

Several embodiments of the invention will be explained in more detail with reference to the drawing. Show it:

1 a cavitation nozzle in section with a convergent cross section at the nozzle inlet which merges into a cylindrical cross section and a divergent cross section at the nozzle exit,

2 a cavitation nozzle in section with a convergent cross-section at the nozzle inlet which merges into a cylindrical cross section and has a larger cross section at the nozzle exit and an additional attachment at the nozzle opening in the form of a truncated cone,

3 a cavitation nozzle in section with a convergent cross-section at the nozzle inlet which merges into a cylindrical cross-section and has several graduations in the direction of the nozzle exit as extensions in the direction of the nozzle exit,

4 the basic structure of the device for cleaning a pipeline by means of a Kavitationsdüsensystems with a high pressure pump with removal of fluid from the piping system,

5 the basic structure of the device for cleaning a pipeline by means of a Kavitationsdüsensystems with an annular channel and associated cavitation nozzles and with external feed for the high pressure pump,

6 a pipe extension at the injection point with annular channel, cavitation nozzles and high-pressure pump,

7 a separate cavitation tank integrated in the fluid system,

8th the basic structure of a cleaning head in a well shaft and

9 the basic structure of a cleaning head with a replaceable, the Brunneninnenrohrdurchmesser adapted ring with adjustable cavitation nozzles in a well shaft and a high-pressure fluid production plant outside the well shaft.

The device according to the invention has a high-pressure pump 21 , which is supplied via a pipe from the fluid fluid system. The high pressure pump 21 However, it can also be provided by an external external power supply 24 be fed. From the high pressure pump 21 leads a high pressure line 20 to at least one cavitation nozzle 6 , wherein the cavitation nozzle 6 in the fluid system or within the fluid-carrying pipeline 18 lies. The cavitation nozzle 6 has a convergent cross-section at the nozzle inlet 14 , which merges into a cylindrical cross-section d1 and at the nozzle exit in a divergent cross-section 15 passes. In other embodiments, the cylindrical cross section d1 merges into a larger cylindrical cross-section d2 (d2> d1) or the cylindrical cross-section d1 merges into multi-stepped, widening, cylindrical cross-sections (d5>d4>d3> d1). As a result, the most diverse radiation of Kavitationskegels 17 and cavitation properties of the cavitation nozzles 6 reached. In addition, at the outlet opening of the cavitation nozzle 6 an expanding section in the form of a truncated cone 13 be arranged, which serves for the targeted reflection of the laterally radiated ultrasound.

To reinforce the cleaning effect is an annular channel 22 with several cavitation nozzles 6 stocked. The cavitation nozzles 6 can be directed inwards or outwards. For closed fluid systems, such as piping 18 or Boilern is the ring channel 22 on the outside of the pipeline 18 or boiler and the cavitation nozzles 6 are directed into the interior of the boiler. In fluid-carrying systems with relatively small nominal sizes is a nominal diameter increase 25 required at the injection point to prevent damage to the opposite walls. This variant is in 6 shown.

In a variant, the device may have a cavitation tank 27 , as in 7 represented possess. The cavitation tank 27 has a fluid inlet opening and a fluid outlet opening with a corresponding fluid flow 19 , Advantageously, the cavitation container 27 on its outside a ring channel 22 , of which several cavitation nozzles 6 into the interior of the cavitation tank 27 are directed. A high pressure pump 21 feeds via a high pressure line 20 the ring channel 22 and thus the cavitation nozzles 6 , The high pressure pump 21 has a piping to the fluid system or an external external supply 24 ,

The inventive device for cleaning of open fluid systems, in particular of wells by means of a Kavitationsdüsensystems works with a in the well shaft 1 Lowerable and fixable cleaning head 2 that with a holding and connection system 3 which simultaneously serves as a media supply and removal system 3 is formed and the connection between the working surface of the operator and cleaning head 2 allows. In the cleaning head 2 is still a dirty water pump 4 , at least one camera 5 with lighting and at least one cavitation nozzle 6 integrated. Furthermore, the cleaning head 2 Zentrierschlauchringe 7 and at the bottom a drip tray 8th intended. Outside the well shaft 1 is a high-pressure fluid production plant 9 with a connection to the cleaning head 2 intended. This high pressure fluid generating plant 9 can also in the cleaning head 2 be arranged.

The camera system on the cleaning head 2 is optimally equipped if below the drip tray 8th a camera 5 and at the top of the cleaning head 2 on the circumference distributed several cameras 5 are provided.

At the cleaning head 2 is usefully at least one extendable sensor 10 for wall thickness measurement of the slot bridge filter 11 intended. This sensor 10 can also be used to evaluate the cleaning

As well as the arrangement of the cameras 5 is also the arrangement of cavitation nozzles 6 on the cleaning head 2 evenly on the circumference of the cleaning head 2 intended. The cavitation nozzles 6 are in their distance to the slot bridge filter 11 and with its beam angle to the slot bridge filter 11 adjustable.

In an embodiment of the cleaning head 2 is on the cleaning head 2 a replaceable, the Brunneninnenrohrdurchmesser adapted ring 12 with adjustable cavitation nozzles 6 intended. Thus, in standardized well diameters of the cleaning head 2 be completely set up before the start of cleaning.

The cavitation nozzles 6 possess for generating a Kavitationskegels 17 a special shape. At the nozzle entrance has the cavitation nozzle 6 a convergent cross-section 14 , which merges into a cylindrical cross-section d1 and at the nozzle exit in a divergent cross-section 15 passes. In a further embodiment of the cavitation nozzle 6 goes the convergent cross section 14 in a cylindrical cross-section d1 in an even larger cylindrical cross-section d2 over. In a third variant, the convergent cross section goes 14 at the nozzle beginning in a cylindrical cross section d1 over and then over multi-stepped, flared, cylindrical cross-sections, such. D5>d4>d3> d1, to the nozzle exit. These measures, as well as the arrangement of a at the outlet opening of the Kavitationsdüse 6 additionally arranged extension in the form of a truncated cone 13 , extends the cavitation cone 17 ,

The method for the purification of open fluid systems, in particular well systems using the device according to the invention and its variants works according to the following Chema. The cleaning head 2 is via a rope or a rigid connection as a holding and connection system 3 which simultaneously serves as a media feed and delivery system 3 serves, in the well shaft 1 drained to the point where the front camera 5 on the cleaning head 2 the transition from the well pipe to the slot bridge filter 11 determined and the cavitation nozzles 6 at the beginning of the slot bridge filter 11 are located. The cavitation nozzles 6 are then aligned so that the cavitation cone 17 the cavitation nozzles 6 perpendicular to the slot bridge filter 11 or at a defined angle to the slot bridge filter 11 are directed and the cavitation nozzles 6 at an optimal distance to the slot bridge filter 11 are located. Now the high-pressure fluid production plant 9 put into operation and a high pressure current 16 through the cavitation nozzles 6 for generating a cavitation cone 17 sent and thus set the cleaning process in motion, with the removed contaminants and particles through the drip tray 8th at the bottom of the cleaning head 2 be caught. By connecting the dirty water pump 4 These particles are removed from the drip tray 8th and in the area of the gravel layer behind the slot bridge filter 11 pumped or sucked off and over the holding and connection system 3 conveyed to outside the well as dirty water. Here, the impurities and particles are filtered out and the filtered water through the high-pressure fluid production plant 9 pumped back into the well again.

After cleaning the first section of the slot bridge filter 11 becomes the cleaning head 2 further lowered to the next ring sector of the slot bridge filter 11 while at the same time reviewing the previously cleansed sector. For this purpose, the centering rings 7 between cleaning head 2 and slot bridge filters 11 filled with a gaseous or liquid medium and thus sealed the sector to be tested. Subsequently, it is checked via a defined pressure flow or suction flow, whether the cleaning had the desired success, in which the overpressure or negative pressure is measured.

The extracted dirty water from the drip tray 8th and in the area of the gravel layer behind the slot bridge filter 11 can also already in the cleaning head 2 be filtered. However, for this purpose, a corresponding filter arrangement in the cleaning head 2 necessary.

The pressure flow to check the cleaning can be generated via the dirty water pump or by switching to an additional pump.

LIST OF REFERENCE NUMBERS

1

 well shaft

2

 cleaning head

3

 Holding and connection system, media supply and media removal system

4

 Dirty water pump

5

 camera

6

 cavitation nozzle

7

 Zentrierschlauchringe

8th

 drip tray

9

 High-pressure fluid generation plant

10

 sensor

11

 Slot bridge filters

12

 Ring with adjustable cavitation nozzles

13

 Section in the form of a truncated cone at the outlet opening of the cavitation nozzle

14

 convergent cross-section at the nozzle inlet

15

 divergent cross-section at the nozzle exit

16

 High pressure stream

17

 Kavitationskegel

18

 fluid-carrying pipeline

19

 fluid flow

20

 High-pressure line

21

 high pressure pump

22

 annular channel

24

 External power supply

25

 Nominal magnification

26

 vent valve

27

 cavitation tank

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• WO 9402422 [0002]
• WO0125152 [0003]
• EP 0338697 [0004]
• DE 3920046 [0005]

Claims (13)

Device for cleaning open or closed fluid systems by means of a cavitation nozzle system, characterized in that from the fluid system, a pipeline to a high-pressure pump ( 21 ) or an external fluid feed as external feed ( 24 ) to this high pressure pump ( 21 ), the high pressure pump ( 21 ) via a high-pressure line ( 20 ) with at least one cavitation nozzle ( 6 ), wherein the cavitation nozzle (s) ( 6 ) in the fluid system or within the fluid-carrying pipeline ( 18 ) and the cavitation nozzle (s) ( 6 ) at the nozzle inlet a convergent cross section ( 14 ), which merges into a cylindrical cross section d1 and at the nozzle exit - in a divergent cross section ( 15 ) or - in a cylindrical cross-section with a larger cross-section d2> d1 or - in multi-stepped, widening, cylindrical cross-sections d5>d4>d3> d1 passes, wherein at the outlet opening of the cavitation nozzle (s) ( 6 ) additionally an expanding section in the form of a truncated cone ( 13 ) can be arranged. Device according to claim 1, characterized in that a plurality of cavitation nozzles ( 6 ) on a ring channel ( 22 ), directed inwards or outwards. Device according to one of the preceding claims, characterized in that in the fluid system a cavitation container ( 27 ) is integrated with a fluid inlet opening and a fluid outlet opening, which is connected to at least one cavitation nozzle ( 6 ) equipped with a high-pressure line ( 20 ) with a high-pressure pump ( 21 ) and the high pressure pump ( 21 ) a pipeline as a supply line from the fluid system to the high-pressure pump ( 21 ) and the cavitation container ( 27 ) with a vent valve ( 26 ) Is provided. Device for cleaning a closed fluid system according to one of the preceding claims, characterized in that the injection point with the or the cavitation nozzle (s) ( 6 ) a nominal diameter increase ( 25 ) owns. Device for cleaning open fluid systems, in particular well systems, by means of a cavitation nozzle system, characterized in that at one in the well shaft ( 1 ) lowerable and fixable cleaning head ( 2 ) with a holding and connection system ( 3 ), which simultaneously serves as a media feed and discharge system ( 3 ) and an integrated wastewater pump ( 4 ), at least one camera ( 5 ) with lighting, at least one cavitation nozzle ( 6 ), Centering rings ( 7 ) and at the bottom of a drip tray ( 8th ) and outside the well shaft ( 1 ) a high-pressure fluid production plant ( 9 ) with a connection to the cleaning head ( 2 ) are provided. Device according to claim 5, characterized in that the high-pressure fluid production plant ( 9 ) in the cleaning head ( 2 ) is integrated. Device according to claim 5 and 6, characterized in that the cleaning head ( 2 ) at least one extendable sensor ( 10 ) for wall thickness measurement of the slot bridge filter ( 11 ) is provided. Device according to claim 5 to 7, characterized in that the cavitation nozzles ( 6 ) on the cleaning head ( 2 ) evenly on the circumference of the cleaning head ( 2 ) and in their distance from the slot bridge filter ( 11 ) and with its radiation angle to the slot bridge filter ( 11 ) are adjustable. Device according to claim 5 to 8, characterized in that the cleaning head ( 2 ) a replaceable, the Brunneninnenrohrdurchmesser adapted ring ( 12 ) with adjustable cavitation nozzles ( 6 ) is arranged. Process for the purification of open fluid systems, in particular well installations using the device according to claims 5 to 9, characterized in that the cleaning head ( 2 ) via a rope or a rigid connection in the well shaft ( 1 ) to the point where the front camera ( 5 ) the transition from the well pipe to the slot bridge filter ( 11 ) and the cavitation nozzles ( 6 ) at the beginning of the slot bridge filter ( 11 ), - then the cavitation nozzles ( 6 ) are aligned so that the cavitation cone ( 17 ) of the cavitation nozzles ( 6 ) perpendicular to the slot bridge filter ( 11 ) or at a defined angle to the slot bridge filter ( 11 ) and the cavitation nozzles ( 6 ) at an optimum distance from the slot bridge filter ( 11 ), then the high-pressure fluid production plant ( 9 ) and a high pressure stream ( 16 ) through the cavitation nozzles ( 6 ) for generating a cavitation cone ( 17 ), thus initiating the cleaning process, whereby the removed impurities and particles pass through the collecting tray ( 8th ) and by connecting the dirty water pump ( 4 ) from the drip tray ( 8th ) and in the area of the gravel layer behind the slot bridge filter ( 11 ) is pumped or sucked off and via the holding and connection system ( 3 ) to outside the well shaft ( 1 ) is promoted as waste water and here the Contaminants and particles are filtered out to filter the filtered water through the high-pressure fluid production plant ( 9 ) after the cleaning of the first section of the slot bridge filter ( 11 ), the cleaning head ( 2 ) to clean the next ring sector and at the same time to carry out a check of the previously cleaned sector, including the centering rings ( 7 ) between cleaning head ( 2 ) and slot bridge filters ( 11 ) are filled with a gaseous or liquid medium and thus seal the sector to be examined, - is then checked via a defined pressure flow or suction, whether the cleaning had the desired success, in which the pressure or vacuum is measured. A method according to claim 10, characterized in that the extracted dirty water from the drip tray ( 8th ) and in the area of the gravel layer behind the slot bridge filter ( 11 ) already in the cleaning head ( 2 ) is filtered. A method according to claim 10 and 11, characterized in that the pressure flow for checking the cleaning via the dirty water pump ( 4 ) or by switching to an additional pump. A method according to claim 10 to 12, characterized in that for checking the cleaning of the well system of the sensor ( 10 ) is used with.

Images