DE102017125713A1 - Pressure device and cleaning method with such - Google Patents

Abstract

The present invention relates to a pressure device (1) for the construction and ejection of a pressure wave, comprising: a pressure vessel (2), in particular a pressure cylinder, and a control device (3) which directs the pressure vessel (2) into a first and second pressure chamber (8, 9 ) and which is arranged adjustable between a first and second working position in the pressure vessel (2). In this case, the first and second pressure chamber (8, 9) via a shut-off (10) communicating with each other coupled, the control member (3), in particular via an actuating element (4), with a sealing body (5) coupled in the first working position the control member (3) closes an outlet opening (6) in the pressure vessel (2) and releases it in the second working position. A first pressure port (14) in the pressure vessel (2) is provided, via which a fluid in the first and / or second pressure chamber (8, 9) and / or can be discharged therefrom. First pressure port (14), control member (3), actuator (4), sealing body (5) and obturator (15) cooperate so that at a pressure reduction in the second pressure chamber (9) via the first pressure port (14) with closed shut-off (15) and under pressure of the first pressure chamber (8), the control member (3) is brought from its first to its second working position, the sealing body (5) the outlet opening (6) releases and in the first pressure chamber (8) under pressure standing fluid abruptly through the outlet opening (6) escapes.

Description

FIELD OF THE INVENTION

The present invention relates to a pressure device for construction and ejection of a pressure wave, a combustion chamber with such a pressure device and a cleaning method by means of such a pressure device for a combustion chamber.

BACKGROUND OF THE INVENTION

• - Die isolierende Wirkung dieser Schichten verringert den Wärmeübergang im Brennraum und in den Abgaseinrichtungen. Dies vermindert die Effizienz der Wärmetauscher und setzt beispielsweise auch die Leistungsfähigkeit von Rauchgasreinigungssystemen deutlich herab.
• - Die Ablagerungen, die aggressive Bestandteile enthalten können, erhöhen das Korrosionsrisiko, insbesondere an druckbeaufschlagten Teilen, im Wärmetauscher.
• - Durch die zusätzlichen Ablagerungsschichten werden die Strömungsquerschnitte und -geometrien verringert bzw. verändert, so dass sich der Strömungswiderstand der Rauchgase erhöht und die Strömungsgeschwindigkeiten und -eigenschaften beeinträchtigt werden können.

In incinerators (eg for chemical, municipal, industrial) or in power plants where fossil fuels (coal, oil) or biomass are incinerated (wood, agricultural waste, wood pellets, vegetable or regenerated oils, biogas) are produced in the combustion chambers and flue gas-carrying areas Combustion residues (slag, ash, etc.) can deposit there as deposits on walls and internals. During operation of such plants such deposits grow on the combustion chamber walls or on the surfaces of internals. These layers of deposits affect the performance and life of the equipment for several reasons:

• - The insulating effect of these layers reduces the heat transfer in the combustion chamber and in the exhaust devices. This reduces the efficiency of the heat exchangers and significantly reduces, for example, the performance of flue gas cleaning systems.
• - The deposits, which may contain aggressive components, increase the risk of corrosion, especially in pressurized parts, in the heat exchanger.
• - The additional deposition layers, the flow cross sections and geometries are reduced or changed, so that the flow resistance of the flue gases can be increased and the flow velocities and properties can be affected.

Therefore, it is necessary to either prevent the deposits, which is not possible with many fuels, or to remove them regularly. For this purpose, the systems must be put out of operation, and the inner surfaces of the combustion chambers must be regularly cleaned of deposits. The manual or mechanical processing of the combustion chamber surfaces is complex.

Therefore, methods for removing these deposits from the surfaces have been developed. In order to minimize downtimes and plant downtimes, methods are desirable which allow the walls and internal surfaces of such plants to be cleared of slag or deposits during operation, if possible.

One method consists in triggering a pressure wave in the interior of the plant via controlled blasting operations, which releases the mostly solid and brittle slags, ashes and deposits from the surfaces. The separated solids are then removed, for example, via the ash removal from the container. Such blasts or controlled explosions can also be made during operation or at least without cooling the equipment.

Such a method is from the EP 1 067 349 A2 known. For the controlled explosion lances are introduced with an optionally pre-cooled explosive device into the combustion chambers, which is then detonated there. The pressure wave generated in the interior of the container spreads spherical (and largely non-directional) in all directions. Excessive explosions can damage components and, in particular, the walls throwing back the blast. The explosives used are critical in their handling and may only be used by specially authorized persons and companies to minimize the risk of damage and accidents. In current incinerators, the application is particularly critical, or even impossible. Therefore, the cost of such blast cleaning is high and increases the operating costs of the equipment. If the blast cleaning operations are rarely carried out, the plants are operated with low efficiencies, which in turn worsens the yield and efficiency and thus worsens the productivity and efficiency of the plants.

It is therefore the object to provide a cleaning device or a cleaning method for combustion chambers and incinerators, in which the above-mentioned problems are at least partially solved.

This problem is solved by the present invention according to claim 1.

SUMMARY OF THE INVENTION

According to a first aspect of the invention, there is provided a pressure device for building and ejecting a pressure wave comprising:

• - die erste und zweite Druckkammer über ein Absperrorgan kommunizierend miteinander koppelbar sind,
• - das Steuerorgan mit einem Dichtungskörper gekoppelt ist, der in der ersten Arbeitstellung des Steuerorgans eine Austrittsöffnung im Druckbehälter verschließt und diese in der zweiten Arbeitsstellung freigibt,
• - ein erster Druckanschluss im Druckbehälter vorgesehen ist, über den ein Fluid in die erste und/oder zweite Druckkammer zu- und/oder aus dieser abführbar ist, und
• - erster Druckanschluss, Steuerorgan, Stellelement, Dichtungskörper und Absperrorgan so zusammenwirken, dass bei einem Druckabbau in der zweiten Druckkammer bei geschlossenem Absperrorgan und bei unter Druck stehender erster Druckkammer das Steuerorgan aus seiner ersten in seine zweite Arbeitsstellung gebracht wird, dabei der Dichtungskörper die Austrittsöffnung freigibt und das in der ersten Druckkammer unter Druck stehende Fluid schlagartig durch die Austrittsöffnung entweicht.

A pressure cylinder and a control member which divides the pressure cylinder into a first and second pressure chamber and which is adjustably arranged between a first and second working position in the pressure cylinder, wherein

• - the first and second pressure chambers can be coupled to one another in a communicating manner via a shut-off device,
• - The control member is coupled to a sealing body which closes an outlet opening in the pressure vessel in the first operating position of the control member and releases it in the second working position,
• - A first pressure port is provided in the pressure vessel, via which a fluid in the first and / or second pressure chamber to and / or can be discharged from this, and
• - First pressure port, control member, actuator, sealing body and obturator cooperate so that at a pressure reduction in the second pressure chamber with closed shut-off and pressurized first pressure chamber, the control member is moved from its first to its second working position, while the sealing body releases the outlet opening and the fluid under pressure in the first pressure chamber escapes abruptly through the outlet.

This fluid impact enters a combustion chamber to be cleaned and causes a pressure wave there, which dissolves slag, ash or deposits from the walls. As the fluid, for example, a non-combustible substance such as e.g. Water vapor can be used, which can be handled safely or without pyrotechnic risks. Such a pressure device is permanently installed in an outer wall of the combustion chamber or another component of the system and provided with a controllable fluid supply, so that the cleaning can be largely automated and can be integrated into the process control of the system. Optionally, the cleaning can be carried out even without interrupting the combustion process itself. It is also possible to distribute several pressure equipment on the combustion chamber or in the system and to operate in a coordinated manner, so that the effect of the built-up pressure wave or the pressure waves optimized to the combustion chamber / - plant geometry can be designed.

The inventive method can be largely automated and can be applied by untrained personnel.

Further aspects and features of the present invention will become apparent from the claims, the accompanying drawings and the following description of preferred embodiments.

list of figures

• 1 eine schematische Darstellung eines ersten Ausführungsbeispiels der Erfindung in einem ersten Betriebszustand,
• 2 das in der 1 dargestellte Druckgerät in einem Zwischenbetriebszustand eine schematische Darstellung eines zweiten Ausführungsbeispiels der Erfindung,
• 3 das in 1 und 2 dargestellte Druckgerät in einem zweiten Betriebszustand,
• 4 ein Ablaufdiagramm des erfindungsgemäßen Verfahrens.

Embodiments of the invention will now be described by way of example with reference to the figures. Showing:

• 1 a schematic representation of a first embodiment of the invention in a first operating state,
• 2 that in the 1 illustrated printing device in an intermediate operating state, a schematic representation of a second embodiment of the invention,
• 3 this in 1 and 2 illustrated printing device in a second operating state,
• 4 a flow diagram of the method according to the invention.

DESCRIPTION OF EMBODIMENTS

1 shows the schematic representation of a first embodiment of the present invention. Before a detailed description first follows general explanations to the embodiments.

The operating principle of this printing device based on the fact that via a control member which divides the impression cylinder into a first and second pressure chamber and which is adjustable between a first and second working position in the pressure cylinder, via a control element, a sealing body is adjusted, which closes or exposes an outlet opening.

In this case, a high pressure is initially built up by the supply of a fluid in both pressure chambers. Subsequently, the fluid is discharged from the second pressure chamber, thereby creating a pressure difference between the two pressure chambers, which causes the control element - initially in its first working position - is adjusted to its second operating position and possibly adjusted via an actuating element, the seal body in that it releases the outlet opening.

Through the outlet then the pressurized fluid then passes abruptly into an area of the system in which the pressure wave is to be built up. This pressure or shock wave then dissolves on the walls or on internals adherent deposits (slag, ash, etc.). In a combustion chamber or other flue-gas-carrying areas, these are typically deposits or incineration residues which are deposited as solids and slag on the walls of the combustion chamber or on internals or on heat exchanger elements projecting into the combustion chamber or other areas. The detached by the shock wave solids can also be removed during operation on the proposed ash or slag removal from the combustion chamber. In its simplest embodiment, the pressure device has a first pressure connection, via which the fluid is supplied into the first and the second pressure chamber and is also discharged therefrom. In addition, a shut-off device is provided, which connects the first and second pressure chamber communicating with each other or their connection with each other can interrupt. When pressure builds up the shut-off valve is open. As a result, the same pressure is built up in the fluid supply via the first pressure port in both pressure chambers.

The fluid is, for example, water vapor, which is supplied and pressurizes the pressure cylinder as a whole, with the same pressure prevailing there through the connection between the first and second pressure chambers. After the pressure has built up, the first pressure connection and the shut-off device are closed. To trigger the pressure surge, the pressure is then reduced only in the second pressure chamber (via the first pressure port). The resulting pressure difference between the first and second pressure chamber moves the control member from the first working position to the second working position and lifts the sealing body from the outlet opening, which is then released.

The pressure vessel may be designed as a circular cylindrical pressure cylinder but may also include other container shapes and shapes (e.g., spherical, lenticular). The control member may then be, for example, a flexible membrane which is coupled directly to the seal body via a connecting element or an actuator and which is connected at its peripheral edges to the inner wall of the pressure vessel so that it is divided into two pressure chambers. If the same pressure prevails in the two pressure chambers, no actuating force is exerted on this diaphragm. However, if a negative pressure (or an overpressure in the first one) arises in the second pressure chamber, the diaphragm is adjusted in the direction of the second pressure chamber, thereby releasing the sealing body from the outlet opening.

In another embodiment, the control member is designed as a displaceable piston in the pressure vessel and coupled to the obturator. Such a piston allows a very stable pressure cylinder and also allows, depending on the piston size and cylinder wall thicknesses, to work with very high pressures.

In one embodiment, the control member (e.g., the plunger) is connected to the seal body via an actuator formed as an actuator rod. Thus, the piston can be arranged relatively far away from the seal body. Thus, the interior of the printing cylinder, i. the volume of the first pressure chamber, which passes through the actuating rod, are made relatively large and thus a large fluid / vapor or gas volume can be realized, which allows a very strong pressure wave. Such a control rod also allows a slim (elongated), technically favorable construction of the printing cylinder. Thus, even with low wall thicknesses of the pressure vessel, a very pressure-resistant cylinder can be realized.

In one embodiment, the obturator is arranged in a line connecting the first and second pressure chamber. This happens, for example, in the form of a bypass line, which connects the first and second pressure chamber of the pressure cylinder, in which the obturator, for example, as a stopcock, is arranged. Such a stopcock can be adjusted manually from the outside or remotely controlled.

In one embodiment, the obturator in a control piston itself passing through the connecting line between the first and second pressure chamber is arranged. In this embodiment, the pressure equalization effect can be realized when supplying the fluid and the generation of the differential pressure between the two pressure chambers, for example via a check valve. This is then arranged connecting the two pressure chambers in the actuating piston. This allows a particularly simple embodiment, in which, for example, the first pressure port opens into the second pressure chamber and the check valve from the second pressure chamber in the direction of the first pressure chamber is continuous. As a result, during the fluid supply (during pressure build-up), the fluid can also reach the first pressure chamber through the check valve via the second pressure chamber. So there is always a pressure equalization instead.

Once the pressure buildup has been completed, the overpressure from the second pressure chamber can now also be reduced via the first pressure connection. Due to the differential pressure between the second and first pressure chamber closes the check valve and the pressure effect in the first pressure chamber causes a displacement of the piston in the pressure cylinder, adjusted so that the sealing body, which releases the outlet opening, while the actuating piston is moved from its first to the second working position.

In one embodiment, the pressure build-up is realized via a heating device which heats the fluid fed into the pressure cylinder (the two pressure chambers) to such an extent that it experiences a phase change from liquid to gaseous. Such a phase change from liquid to gaseous causes a very strong increase in pressure due to the very high volume increase during the transition from liquid to gaseous. Thus, the pressure build-up can be effected with a relatively small starting amount (volume) of the initially liquid fluid. The pressure build-up can thus be realized, for example, very simply with water that is evaporated. This is a very readily available and completely safe fluid available. The inflow of a steam pulse into a combustion chamber may even occur during operation of an incinerator, without the combustion process being disturbed sustainably.

There are embodiments in which the heater acts directly on the pressure vessel itself or on its own heating tank, which initially contains the liquid fluid, which is then evaporated there via the heater. This gas or steam is then passed via corresponding coupling lines or via the first pressure port in the pressure vessel.

There are embodiments in which, in addition to the first pressure connection for supplying the fluid into the first pressure chamber, a second pressure connection for removing the fluid from the second pressure chamber is provided. Such an arrangement makes it possible to further increase the volume of fluid required for the surge pressure by supplying it, as already described above, for example, from an additional separate heating vessel into the first pressure chamber and also to the second pressure chamber until the pressure builds up completely. In the subsequent separation of the two pressure chambers from each other via the obturator, the pressure is then reduced via the second pressure port from the second pressure chamber, via the piston, the sealing body is released from the outlet opening. With appropriate line cross-sections between the heating tank and the first pressure chamber, a very large volume of fluid from both the first pressure chamber and from the heating tank directly or filled with vaporized fluid additional container suddenly escape into the combustion chamber and build there a very sustainable pressure wave. Such an embodiment is particularly suitable for very large-volume combustion chambers.

In one embodiment, the control member is held by a spring element in its first working position. This ensures that the outlet opening is always closed when the same pressure prevails in both pressure chambers. That is, the exit port, which forms a connection between the combustion chamber and the pressure vessel, and thus possibly to the outside world, is self-closing. It is only open when the pressurized fluid exits through the outlet opening at positive pressure in the first pressure chamber. Once the surge has ended and the pressure equalization between the first and second pressure chamber has taken place, the spring closes the outlet opening. Thus there is never the danger that harmful or toxic combustion gases can escape through the pressure device from the connected combustion chamber via the pressure cylinder or the outlet opening.

In one embodiment, a spring device is provided which acts between the control member and the sealing body such that the sealing body executes an accelerated by the spring means release movement when adjusting the control member from its first to its second working position and the outlet opening is additionally exposed accelerated. This allows an explosive and thus very effective pressure surge in the combustion chamber.

In one embodiment, the outlet opening is formed in a flange, which forms a bottom of the printing cylinder. On such a flange component can be easily formed with corresponding sealing surfaces to the sealing body the outlet opening (mechanically machined rotary member). This flange can also serve as a connecting element for the combustion chamber at the same time. The flange can be connected, for example via a screw with the combustion chamber. In another embodiment, the flange is welded directly into a wall of the combustion chamber.

Similarly, such a flange may also be connected (welded, screwed, flanged) directly or indirectly to a cylinder tube defining the body of the pressure vessel.

In an embodiment it is provided that a combustion chamber or a region of a combustion plant is provided with at least one pressure device according to the present invention. Depending on the size of this area, the combustion chamber or the combustion chamber and several such pressure equipment can be provided. In this case, the arrangement can be chosen so that in a simultaneous or timed operation of the individual pressure equipment, the pressure wave to be built up in the combustion chamber can be designed and influenced in a particularly effective manner.

In one embodiment, the combustion chamber is provided with an outer wall into which the outlet opening of the pressure device opens. In this embodiment, the pressure wave directly from the pressure device - ie without additional pipe connection - are constructed in the interior of the combustion chamber.

A further embodiment relates to a cleaning method for an area of an incinerator (eg a combustion chamber) in which pressure build-up in the first and second pressure chambers of the pressure apparatus, closure of the obturator between the first and second pressure chambers, pressure reduction in the second pressure chamber, opening of the outlet opening and pressure wave structure in the area of the plant. This procedure allows by a very simple pressure-controlled function a precise and reproducible pressure wave build-up.

In a further embodiment of this method, first of all, a (liquid) fluid is introduced into the first and second pressure chambers and / or into a heating container. Subsequently, the fluid is heated to the extent that it evaporates. Thus, with a small initial volume of the fluid, a very large volume for triggering the pressure wave in the intended area of the plant can be made available, without the process thereby becoming considerably more difficult.

Coming back to 1 illustrates this a first embodiment of a printing device 1 with one as a printing cylinder 2 trained pressure vessel, one as a piston 3 trained control over an as a control rod 4 trained actuator with a seal body 5 is coupled.

The seal body 5 closes an outlet opening 6 in the interior 7 a combustion chamber not shown opens. The piston 3 is displaceable in the impression cylinder 2 arranged and divides this into a first and second pressure chamber 8th and 9 , The two pressure chambers 8th and 9 are over a shut-off 10 communicable with each other, which is in a bypass line 11 is arranged.

The control rod 4 protrudes into the interior of the piston 3 and is there via a compression spring arrangement 12 against a piston bottom 13 braced. The spring arrangement 12 is inside the piston 3 arranged. The adjusting rod penetrates 4 a guide member adjacent to the first pressure chamber 13a That's about a piece of pipe 13b with the piston bottom 13 connected to the second pressure chamber 9 demarcates. The first pressure chamber 8th and the second pressure chamber 9 are via sealing elements on the piston head 13 or on the guide element 13a sealed against each other. The coil spring 12a relies on the one hand on the guide element 13a from and to the other on a stop element 4a , the end of the control rod opposite the seal body 4 is arranged.

A first pressure connection 14 is with the second pressure chamber 9 connected and is with another as a stopcock 15 provided trained fitting. The first pressure connection 14 serves to fill the printing cylinder 2 with fluid (water) via the second pressure chamber 9 and the bypass line 11 ,

A second pressure connection 20 is with a second shut-off 19 provided, also flows into the second pressure chamber 9 , The second pressure port is used to empty the second pressure chamber 9 ,

An overfill protection 17 with an inward into the first pressure chamber 8th protruding neck 17b outside with a shut-off device 18 is provided, ensures that the desired fill level 24 is not exceeded.

A heating element 16 is intended to the first pressure chamber 8th of the printing cylinder 2 to heat and increase the fluid pressure (eg by evaporating the water)

Optional (alternatively or in addition to the heating element 16 ) A heating container (not shown) is provided, which via a line 23 with the first impression cylinder 2 is connected and heated, pressurized fluid in the first pressure chamber 8th leads.

Instead of the obturator 10 Alternatively, a check valve may be formed in the direction of the first pressure chamber 8th is permeable and towards the second pressure chamber 9 closes.

Function and procedure when using the printing device 1 will now be based on the 1 to 3 explained that show different operating conditions of the printing device. Starting from the in 1 illustrated state in which the first and the second pressure chamber ( 8th . 9 ) to the filling level 24 filled with the liquid medium (water), the following occurs. The shut-off devices 18 . 15 and 19 are closed (in the following description it is assumed that no external heating connection 23 is provided). The obturator 10 between the first and second pressure chambers ( 8th . 9 ) it is open.

This is the bypass line 11 with the open shut-off device 10 sure that both in the first and in the second pressure chamber 8th and 9 about the same level 24 is available.

Subsequently, the medium is in the printing cylinder 2 over the heating element 16 heated, both in the first pressure chamber 8th as well as in the second pressure chamber 9 , The initially liquid water evaporates to water vapor and the pressure in the pressure cylinder 2 rises strongly. About the opened shut-off device 10 and the bypass line 11 a pressure equalization takes place between both pressure chambers 8th and 9 ,

Alternatively, only the first pressure chamber 8th filled with liquid, which there over the heating element 16 is heated / evaporated. The pressure equalization and vapor exchange between the first and second pressure chamber 8th . 9 takes place during evaporation via the bypass line 11 and the open shut-off 10 ,

The connection between the first and second pressure chamber 8th and 9 is through the obturator 10 interrupted. Now the second pressure connection 20 that with the second pressure chamber 9 is connected, open and the pressure in the second pressure chamber 9 is lowered by flowing out of the vaporous fluid.

This creates a pressure difference between the first and second pressure chambers 8th and 9 so that in the first pressure chamber 8th prevailing overpressure on the face of the piston 3 acts and this in the direction of arrow in the direction of the second pressure chamber 9 shifts.

The piston shifts 3 in the in 3 shown position. That at the spring 12a attacking guide element 13a clamps the spring against the stop element 4a the control rod 4 passing through the on the seal body 5 acting internal pressure is held in position until the over the spring 12a on the stop element 4a and thus on the control rod 4 acting force F the sealing force on the seal body 5 overcomes.

Once between seal body 5 and the exit opening 6 a minimal gap is created, which is the inside of the seal body 5 acting sealing force neutralized, since now also in the region of the outlet opening, the same pressure as in the interior of the first pressure chamber 8th builds. This releases the preloaded spring 12a the seal body 5 abruptly from the outlet 6 and bring this into the 3 shown position. In this position, the medium occurs suddenly through the outlet opening 6 in the interior of the combustion chamber to be cleaned and triggers there from a pressure shock and builds up a pressure wave, which dissolves the slags and deposits from the walls and the built-in parts.

A second cleaning effect arises from the fact that the steam or a vapor-liquid mixture enters into pores of the hot slags or evaporated again in gaps between the components and the deposits and by the overheating existing there and thus shatters the slag or detaches deposits from the component ,

This raises the piston 3 over the control rod 4 the seal body 5 from the outlet 6 and that under high pressure in the first pressure chamber 8th standing medium (vapor, fluid) escapes abruptly through the outlet opening 6 in the interior 7 of the combustion chamber to be cleaned and there builds up a pressure wave, which dissolves the slags and deposits from the walls and fixtures. The piston 3 now takes up his second job (cf. 5 ).

The bottom of the printing cylinder 2 in which the outlet opening 6 is provided, is as a flange element 21 formed in the container wall 22 the combustion chamber 7 is welded in (see 1 )

In an alternative embodiment, the flange element 21 via appropriate fastening means (screws) with a corresponding receiving flange in the container wall 22 screwed.

• - A Druckaufbau in der ersten und zweiten Druckkammer 8, 9 des Druckgerätes 1,
• - B Schließen des Absperrorgans 10 zwischen erster und zweiter Druckkammer (8, 9),
• - C Druckabbau in der zweiten Druckkammer 9,
• - D Öffnen der Austrittsöffnung 6 und
• - E Druckwellenaufbau in der Brennkammer 7.

That in the 4 The cleaning method illustrated comprises the steps

• A pressure build-up in the first and second pressure chambers 8th . 9 of the printing device 1 .
• - B Closing the obturator 10 between first and second pressure chambers ( 8th . 9 )
• - C pressure reduction in the second pressure chamber 9 .
• - D opening the outlet 6 and
• - E pressure wave buildup in the combustion chamber 7 ,

In this case, the step C comprises pressure reduction in the second pressure chamber 9 optionally, steps C1 fluid supply to the first pressure chamber and C2 heating and evaporation of the fluid.

LIST OF REFERENCE NUMBERS

1

printing device

2

pressure cylinder

3

Piston / actuator

4

control rod

4a

stop element

5

seal body

6

outlet opening

7

Interior (combustion chamber)

8th

first pressure chamber

9

second pressure chamber

10

shutoff

11

bypass line

12

spring system

13

piston crown

13a

guide element

14

first pressure connection

15

first stopcock

16

heating element

17

Vent line (optional)

18

Stopcock (optional)

19

second pressure connection

20

second stopcock

21

flange

22

container wall

23

external heating

24

filling level

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

• EP 1067349 A2 [0006]

Claims (13)

Pressure device (1) for the construction and ejection of a pressure wave with: - A pressure vessel (2), in particular a pressure cylinder, and - A control member (3) which divides the pressure vessel (2) into a first and second pressure chamber (8, 9) and which is adjustably arranged between a first and second working position in the pressure vessel (2), wherein the first and second pressure chamber (8 , 9) can be coupled to one another in a communicating manner via a shut-off element (10), the control member (3), in particular via an adjusting element (4), is coupled to a sealing body (5) which in the first working position of the control member (3) closes an outlet opening (6) in the pressure vessel (2) and these in the second working position frees a first pressure port (14) is provided in the pressure vessel (2) via which a fluid in the first and / or second pressure chamber (8, 9) and / or can be discharged therefrom, and first pressure port (14), control member (3), actuator (4), sealing body (5) and obturator (15) cooperate so that at a pressure reduction in the second pressure chamber (9) via the first pressure port (14) with a closed obturator (15) and under pressure of the first pressure chamber (8), the control member (3) is brought from its first to its second working position, the sealing body (5) the outlet opening (6) releases and in the first pressure chamber (8) under pressure standing fluid abruptly through the outlet opening (6) escapes. Pressure device (1) after Claim 1 in which the control element is designed as a piston (3) displaceable in the pressure vessel (2) and / or the control element is designed as an actuating rod (4) coupled to the control element and the sealing body. Pressure device (1) after Claim 1 or 2 in which the obturator (10) is arranged in a line (11) connecting the first and second pressure chambers. Pressure device (1) after Claim 1 . 2 or 3 in which a spring device (12) is provided, which between the control member (3) and the sealing body (5) acts such that the sealing body (5) when bringing the control member (3) from its first to its second working position by a Spring device (12) performs accelerated release movement and the outlet opening (6) is additionally exposed accelerated. Pressure device (1) after Claim 2 . 3 or 4 in which the obturator is designed as a check valve. Pressure device (1) according to one of Claims 1 to 5 in which a heating device (16) is provided for heating the fluid supplied to the pressure vessel (2), which causes a phase change from liquid to gaseous for pressure build-up. Pressure device (1) after Claim 6 in which the heating device (16) acts on the pressure vessel (2) and / or a heating vessel (17) connected to the first pressure port. Pressure device (1) according to one of Claims 1 to 7 in which the first pressure port for supplying the fluid into the first pressure chamber (8) is provided and a second pressure port for discharging the fluid from the second pressure chamber (9) is provided. Pressure device (1) according to one of Claims 1 to 8th in which the outlet opening (6) is formed in a flange component (21) which forms a bottom of the pressure vessel (2). Area of a combustion plant, which is provided with at least one pressure device (1) according to one of the preceding claims. Area after Claim 10 , with an outer wall (22) into which the outlet opening (6) opens. Cleaning method for a range (7), in particular a combustion chamber, after Claim 10 or 11 with: - Pressure build-up in the first and second pressure chamber (8, 9) of the pressure device (1) - Closing of the obturator (10) between the first and second pressure chamber (8, 9) - Pressure reduction in the second pressure chamber (9) - Opening the outlet opening (6) - Pressure wave build-up in the area (7). Cleaning method after Claim 12 in which the pressure build-up comprises: - fluid supply to the first and second pressure chambers (8, 9) and / or the heating vessel (17) - heating and evaporation of the fluid.

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