EP2855988A1 - Vorrichtung zur explosionstechnischen entkopplung zweier anlagenteile - Google Patents
Vorrichtung zur explosionstechnischen entkopplung zweier anlagenteileInfo
- Publication number
- EP2855988A1 EP2855988A1 EP13718526.0A EP13718526A EP2855988A1 EP 2855988 A1 EP2855988 A1 EP 2855988A1 EP 13718526 A EP13718526 A EP 13718526A EP 2855988 A1 EP2855988 A1 EP 2855988A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- locking
- explosion
- tubular body
- cam
- restoring force
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000004880 explosion Methods 0.000 title claims abstract description 51
- 239000002360 explosive Substances 0.000 claims abstract description 13
- 239000000843 powder Substances 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 230000009172 bursting Effects 0.000 description 2
- 235000015842 Hesperis Nutrition 0.000 description 1
- 235000012633 Iberis amara Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000001846 repelling effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/58—Devices for accelerating or decelerating flow of the materials; Use of pressure generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/04—Conveying materials in bulk pneumatically through pipes or tubes; Air slides
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/164—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side and remaining closed after return of the normal pressure
Definitions
- the invention relates to a device according to the preamble of claim 1.
- Such a device is known from DE 10 2007 010 060 B3.
- This device is used for explosion-technical decoupling of two system components. From a first part of the installation, explosive dusts can be supplied to a container of a second part of the installation via a pipeline in a stream of air.
- a non-return flap is provided, which is opened by the air flow and which is closed in the event of an explosion in the vessel due to the explosion pressure that occurs.
- the non-return valve is in its closed position against a stop in the tubular body.
- the non-return valve is assigned as a control means for monitoring or functional assurance of a position sensor by means of which the closed position of the check valve is verifiable by these deposits on the check valve or on the stop of the tubular body are detectable.
- the non-return valve is generally located within a tubular body which can be integrated into the respective pipeline connecting the two parts of the system to be decoupled.
- the non-return valve is hinged at one end to the inner wall of the tubular body, so that it can be moved between an open position and a closed position. In the closed position, the non-return valve is located on a stop in the tubular body and thus forms a tight seal of the tubular body.
- the non-return valve is stored so that it lies in its closed position by its own weight. Due to the air flow from the first plant part to the second plant genteil the check valve is then opened automatically, so that the air flow through the pipe body can flow into the second part of the system.
- Typical application examples are systems with separators. There, explosive dusts must be removed from a detection point in an air stream and then fed via a pipeline to a separator in order to remove the dusts from the air mixture there.
- the non-return flap In order to be able to safely fulfill its explosion protection function, the non-return flap must close tightly in the event of an explosion.
- the invention has for its object to improve a device of the type mentioned in terms of their explosion function.
- the invention relates to a device for explosion-related decoupling of two system components.
- explosive dusts from a first part of the installation via a pipeline in an air flow can be supplied to a container of a second part of the installation.
- a non-return valve is provided within a pipe body integrated in the pipeline.
- the non-return valve is opened by the air flow and closed by an explosion in the container due to the explosion pressure.
- the non-return valve is in its closed position against a stop in the tubular body.
- a locking device is provided, by means of which the non-return valve is secured in the closed position.
- a significantly improved explosion protection is achieved in that when retracting the check valve in its closed position on the pipe body in the event of an explosion, a repelling of the check valve is avoided by the pipe body by the locking device.
- the locking device is thus designed so that in an explosion due to the explosion pressure, the non-return valve quickly retracts into its closed position on the tubular body, so that the non-return valve closes the tubular body tight.
- prevents the locking device a knocking back of the check valve of the tubular body, so as to ensure that the non-return valve continuously and without interrupting the tubular body seals tightly and thus causes a continuous explosion-technical decoupling of the two parts of the system.
- the locking device is arranged outside of the tubular body and thus outside of the explosive endangered area. As a result, a secure operation of the locking device is ensured even in the explosion.
- the locking device is arranged secured against contamination, wherein particularly advantageously the locking device is arranged for this purpose in a separate housing on the outside of the tubular body.
- the locking device has a locking element coupled to the non-return flap, which is fixed in position in the closed position arranged non-return flap with a locking pin located in a locking position.
- the check valve is pivotally mounted on a shaft. A shaft end of the shaft is led out on the tubular body. At the shaft end, the locking element is attached.
- the locking bolt is held with a restoring force in the locking position.
- the positional fixing of the locking element is effected when the check valve is arranged in the closed position, wherein advantageously the restoring force is generated by a spring.
- the restoring force thus generated a kickback of the check valve is prevented from the tubular body in a structurally simple manner.
- the locking element is formed by a cam.
- the design of the locking element in the form of a cam is adjusted to the acted upon by the restoring force locking bolt so that in the explosion case by the acting explosion pressure of the cam is moved over the locking bolt, in which this is moved against the restoring force in its final position as soon as Cam has passed the locking pin and thus the check valve is in the closed position, the locking pin is moved by the restoring force in its locking position and locks the cam. This can not move against the locking pin and the check valve remains secured in its closed position.
- an actuating element is provided, which is designed to transfer the locking bolt against the restoring force from the locking position to an unlocking position. In the unlocked position, the locking bolt releases the locking element, so that it can be moved out of the end position.
- the actuating element has an electromagnet.
- a hydraulic or pneumatic actuator is provided.
- the actuator thus forms an automatic unit with which the check valve, in particular after the occurrence of an explosion, can be released again from the closed position. A cumbersome manual release of the check valve is thus eliminated.
- the device according to the invention for explosion-decoupling can be used in various systems in which organic or inorganic explosive dusts occur, such as in mills, fluidized bed granulators, mixers or separators. The invention will be explained below with reference to the drawings. Show it:
- Example of a system with a device for the explosion-related decoupling of plant components Example of a system with a device for the explosion-related decoupling of plant components.
- FIG. 1 shows, as an example of a plant 1, in which explosive dusts occur, a dedusting plant.
- Explosive dusts are generally dusts that can form an explosive atmosphere in gases.
- Such dedusting systems can be used, for example, in systems in which explosive dusts arise during the grinding of components made of plastics or painting of parts.
- the explosive Onsstoryen, inorganic or organic dusts are removed in a stream of air from a detection point 2 and in a pipe 3 a separator 4, in the present case a dry separator supplied. In the separator 4, the dusts are separated from the air stream.
- the cleaned exhaust air is carried out via an output line 5 with a fan 6 from the separator 4.
- an explosion pressure relief 7 is provided in the separator 4, which is formed in the present case of a bursting surface.
- the bursting surface opens, whereby critical overpressures in the separator 4 can be avoided.
- a check valve 8 is provided in the pipeline 3, which is provided at a predetermined installation distance d to the separator 4.
- This non-return valve 8 forms a device for explosion-decoupling of the detection point 2 as the first part of the plant separator 4 as the second part of the system.
- the structure of the check valve 8 and its operation are shown in Figures 2 and 3.
- the non-return valve 8 is integrated in a tubular body 9.
- the non-return valve 8 is integrated in a tubular body 9.
- the non-return valve 8 is preferably made of steel.
- the tubular body 9 has a flow-through opening 9a passing through it in the axial direction, which is adapted to the cross-section of the pipeline 3.
- the thus formed tubular body 9 can thus be integrated in the pipeline 3, so that the air flow through the pipe 3 and the flow-through opening 9a of the tubular body 9 can flow.
- the non-return valve 8 is articulated to a shaft 10.
- FIG. 2 shows the check valve 8 in its open position in which the check valve 8, the flow-through opening 9a releases.
- FIG. 3 shows the non-return flap 8 in its closed position, in which the non-return flap 8 closes off the flow-through opening 9a and rests against a stop 11 on the inner wall of the tubular body 9, in particular in the region of its lower edge.
- the check valve 8 is inclined in its closed position slightly to the vertical, so that the non-return valve 8 is pressed by its own weight against the stop 1 1.
- the dusts are fed to the separator 4 via the air flow from the collecting point 2.
- the check valve 8 is opened automatically, so that the dust flow containing the air is supplied to the separator 4.
- a locking device 12 is provided on the outside of the tubular body 9, whose component Nenten in the figures 4 and 5 are shown.
- the components of the locking device 12 are preferably arranged protected in a housing, not shown, on the outside of the tubular body 9.
- a locking element 13 is provided in the form of a cam.
- the lower edge of the cam has an arcuate curved contour.
- the locking element 13 is attached to a led out of the tubular body 9 shaft end of the shaft 10 to which the non-return valve 8 is articulated mounted. In this case, the locking element 13 is rigidly connected to the shaft end.
- a locking bolt 14 is provided, whose longitudinal axis extends in the vertical direction, and which is mounted in a housing part 15.
- the locking pin 14 is urged by an upwardly acting restoring force exerted by a spring 16 in a locking position.
- This locking position of the locking bolt 14 is shown in FIG. In this locking position, the locking bolt 14 projects beyond the upper side of the housing part 15.
- an actuating element 17 is provided, by means of which the locking bolt 14 can be moved against the restoring force of the spring 16 in an end position in which the locking pin 14 is retracted into the housing part 15.
- the actuating element 17 has an electromagnet in the present case.
- a hydraulic or pneumatic actuator 17 may be provided.
- the geometries and positions of the locking bolt 14 and the cam are adapted so that when the non-return valve 8 abuts against the stop 11, that is, when the non-return valve 8 has reached its closed position, the cam has just passed the locking bolt 14 (FIG 6d)). Then the locking bolt 14 rockets by the restoring force of the spring 16 upwards and is locked at the rear edge of the cam, that is, the cam forms due to an asymmetrical curvature at the bottom of the locking pin 14 a stop 11, which ensures a positional fixation of the cam. But this is the check valve 8 is held firmly in its closed position, that is, a knocking back the check valve 8 from the stop 11 is no longer possible because such a movement is blocked by the locking pin 14.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
- Refuse Collection And Transfer (AREA)
- Check Valves (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012104526.7A DE102012104526B4 (de) | 2012-05-25 | 2012-05-25 | Vorrichtung zur explosionstechnischen Entkopplung zweier Anlagenteile |
PCT/EP2013/057650 WO2013174574A1 (de) | 2012-05-25 | 2013-04-12 | Vorrichtung zur explosionstechnischen entkopplung zweier anlagenteile |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2855988A1 true EP2855988A1 (de) | 2015-04-08 |
Family
ID=48184151
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13718526.0A Withdrawn EP2855988A1 (de) | 2012-05-25 | 2013-04-12 | Vorrichtung zur explosionstechnischen entkopplung zweier anlagenteile |
Country Status (4)
Country | Link |
---|---|
US (1) | US20150132071A1 (de) |
EP (1) | EP2855988A1 (de) |
DE (1) | DE102012104526B4 (de) |
WO (1) | WO2013174574A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3021020B1 (de) | 2014-11-14 | 2017-06-14 | Nederman Holding AB | Gegendruckklappenventilanordnung und Verwendung davon |
JP6512481B2 (ja) * | 2015-10-30 | 2019-05-15 | 新東工業株式会社 | 集塵機用逆止ダンパ |
DE102016122468B3 (de) * | 2016-11-22 | 2018-02-15 | Keller Lufttechnik Gmbh + Co. Kg | Vorrichtung zur explosionstechnischen Entkopplung zweier Anlagenteile einer Anlage |
PL3343077T3 (pl) * | 2016-12-28 | 2019-12-31 | Nederman Holding Ab | Układ klapowego zaworu zwrotnego i jego zastosowanie |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2852037A (en) * | 1956-06-21 | 1958-09-16 | Willis T Downing | Diesel exhaust check valve |
DE3313082A1 (de) * | 1983-04-12 | 1984-10-18 | Josef 2210 Itzehoe Starman | Anordnung zum automatischen verschliessen von rohrleitungen und dergl. |
DE9404593U1 (de) * | 1994-03-18 | 1994-05-26 | Thorwesten, Albert, 59269 Beckum | Vorrichtung zum Fixieren der Schließstellung einer Explosionsklappe |
DE102007010060B3 (de) * | 2007-03-01 | 2008-06-19 | Keller Lufttechnik Gmbh + Co. Kg | Vorrichtung zur explosionstechnischen Entkopplung zweier Anlagenteile |
CH701035A1 (de) * | 2009-05-14 | 2010-11-15 | Rico Sicherheitstechnik Ag | Explosionsschutzventil zum Unterbrechen eines Fluidstroms in einer Rohrleitung. |
DE202009011668U1 (de) * | 2009-08-27 | 2009-12-10 | Dantherm Filtration A/S | Sicherungsanordnung |
ATE557221T1 (de) * | 2010-03-16 | 2012-05-15 | Rippert Besitzgmbh & Co Kg | Zuhaltevorrichtung für rückschlagklappen |
WO2015131041A1 (en) * | 2014-02-28 | 2015-09-03 | Fike Corporation | Passive explosion isolation valve with pulse jet cleaning |
-
2012
- 2012-05-25 DE DE102012104526.7A patent/DE102012104526B4/de not_active Expired - Fee Related
-
2013
- 2013-04-12 US US14/400,558 patent/US20150132071A1/en not_active Abandoned
- 2013-04-12 WO PCT/EP2013/057650 patent/WO2013174574A1/de active Application Filing
- 2013-04-12 EP EP13718526.0A patent/EP2855988A1/de not_active Withdrawn
Non-Patent Citations (2)
Title |
---|
None * |
See also references of WO2013174574A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2013174574A1 (de) | 2013-11-28 |
US20150132071A1 (en) | 2015-05-14 |
DE102012104526A1 (de) | 2013-11-28 |
DE102012104526B4 (de) | 2015-08-27 |
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Legal Events
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Effective date: 20181030 |