WO2020144141A1 - Vorrichtung für geschlossene systeme zum ausgleich von druckstössen - Google Patents
Vorrichtung für geschlossene systeme zum ausgleich von druckstössen Download PDFInfo
- Publication number
- WO2020144141A1 WO2020144141A1 PCT/EP2020/050143 EP2020050143W WO2020144141A1 WO 2020144141 A1 WO2020144141 A1 WO 2020144141A1 EP 2020050143 W EP2020050143 W EP 2020050143W WO 2020144141 A1 WO2020144141 A1 WO 2020144141A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- frame
- hinged lid
- piston
- pivot
- hinged
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/22—Safety features
- B65D90/32—Arrangements for preventing, or minimising the effect of, excessive or insufficient pressure
- B65D90/325—Arrangements for preventing, or minimising the effect of, excessive or insufficient pressure due to explosion, e.g. inside the container
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J13/00—Covers or similar closure members for pressure vessels in general
- F16J13/02—Detachable closure members; Means for tightening closures
- F16J13/06—Detachable closure members; Means for tightening closures attached only by clamps along the circumference
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J13/00—Covers or similar closure members for pressure vessels in general
- F16J13/16—Pivoted closures
- F16J13/18—Pivoted closures pivoted directly on the frame
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J13/00—Covers or similar closure members for pressure vessels in general
- F16J13/24—Covers or similar closure members for pressure vessels in general with safety devices, e.g. to prevent opening prior to pressure release
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/20—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member
- F16K1/2007—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member specially adapted operating means therefor
-
- 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
-
- 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
- F16K47/00—Means in valves for absorbing fluid energy
Definitions
- the invention relates to a device for closed systems to compensate for pressure surges with a frame-shaped element, on which a baffle plate is provided and a hinged lid is pivotally mounted, the hinged lid rests on the frame-shaped element in a rest position and bears in an opening position on the baffle plate, wherein a locking device is hen hen, which holds the hinged lid in the rest position on the frame-shaped element and in the event of a pressure surge releases the hinged lid and then closes it again, in addition a holding device is provided which temporarily holds the hinged lid in the open position after a pressure surge.
- Such devices or explosion flaps are used in closed systems, such as silos, pipelines, biogas plants or the like, in order to equalize pressure in the event of pressure surges caused by possible dust or gas explosions. This prevents destruction of the closed system and further damage to property and personal injury.
- closed systems such as silos, pipelines, biogas plants or the like
- processing processes in closed systems in the food industry that are at risk of explosion, for example with flour or gluten.
- This catching device keeps the explosion flap open longer and thus allows a reverse flow that occurs immediately after venting, which at least partially compensates for the negative pressure in the container caused by the drop in temperature.
- the shock absorption serves to ensure the functional safety of the safety gear, which is formed by mechanical safety hooks.
- the release of these catch hooks and thus the reclosing of the hinged lid is preferably carried out on the basis of a pressure measurement in the container or a flow measurement at the hinged lid opening. Alternatively, a time control can also be provided.
- This known device is due to the mechanical design of the catch device with elaborately designed catch hooks and hydraulic unlocking elements prone to failure and very expensive.
- the Vorrich device is not reusable, because when the hinged lid is opened in the event of an explosion, the shock absorber is permanently deformed and must be replaced to restore the functionality of the device, which is correspondingly expensive.
- the object of the invention is therefore to develop such a device so that it is largely maintenance-free and remains operational and functional even after repeated opening and reclosing after an explosion in the closed system.
- the holding device has a pneumatic piston-cylinder unit which is articulated on the one hand on the back of the baffle plate and on the other hand on at least one swivel lever, the at least one swivel lever is connected to the swivel axis of the hinged cover.
- the device designed in this way has a simple structure and is almost maintenance-free. All that is required is a pneumatic piston-cylinder unit, which must be connected to a small pressure medium reservoir on or near the baffle plate.
- the pneumatic piston-cylinder unit serves not only to keep the hinged lid open for a certain time after opening it, but also as a shock absorber, since it dampens the opening movement of the hinged lid when an explosion occurs in the closed system.
- the hinged lid opens almost continuously without striking the baffle plate several times. For maintenance purposes, it is possible to open the hinged lid by actuating the pneumatic piston-cylinder unit and then to close it again.
- the cylinder of the piston-cylinder unit is articulated on the rear side of the baffle plate and the front end of the piston rod of the piston-cylinder unit is articulated on at least one swivel lever.
- a compression spring is arranged between the piston and the rear end of the cylinder. This compression spring supports the function of the hold-open device.
- the frame-shaped element is arranged at the upper end of a dome-shaped outlet connection of the closed system.
- This embodiment is known per se and is usually provided in silos or the like.
- the at least one pivot lever is connected in a rotationally fixed manner to the pivot axis of the hinged cover.
- the at least one pivot lever is rotatably arranged on the pivot axis of the hinged cover and spaced from the pivot axis has an arcuate guide recess in which a guide bush is slidably received, which is rotatably connected to a further pivot lever, which is rotatably connected with its other end to the pivot axis of the hinged cover.
- This design with at least one swivel lever and with at least one white swivel lever can be used in particular when the swivel axis of the hinged lid is at the level of the upper edge of the container of the closed system, since the swivel lever of the holding device in this case does not swivel into the area gera th below the pivot axis.
- This variant can of course also be used if the dome-shaped element and thus the pivot axis of the hinged cover is arranged at the upper end of a dome-shaped outlet nozzle.
- FIG. 1 is a front perspective view of a device according to a first embodiment with closed hinged lid
- 2 is a rear perspective view of the device of FIG. 1
- FIG. 3 shows a side view of the device according to FIG. 2,
- FIG. 4 is a front perspective view of the device of FIG. 1 with partially opened hinged lid
- FIG. 5 is a rear perspective view of the device of FIG. 4,
- FIG. 6 is a side view of FIG. 5,
- FIG. 7 is a side view of the device of FIG. 1 with the hinged lid fully open and the active hold-open device,
- FIG. 8 is a perspective view of the pneumatic piston-cylinder unit of the device
- FIG. 9 is a front perspective view of a device according to a second embodiment with closed hinged lid
- FIG. 10 is a rear perspective view of the device of FIG. 9,
- FIG. 10 is a side view of FIG. 10,
- FIG. 12 is a front perspective view of the device of FIG. 9 with partially opened hinged lid
- FIG. 13 is a rear perspective view of the device of FIG. 12,
- FIG. 14 is a side view of the device of FIG. 13, 15 is a side view of the device according to FIGS. 9 to 14 with the hinged lid fully open and the active hold-open device as well
- FIGS. 1 to 8 A device according to the invention according to a first embodiment is shown in FIGS. 1 to 8 and generally designated 1.
- the device 1 has a dome-shaped outlet connection 2, which is preferably designed as a cylindrical tube, a flange 3 with a plurality of bores 4 being formed at the lower end of the outlet connection 2.
- the device 1 is connected to the flange 3 on a recess of a closed system, not shown, e.g. a container or a silo, detachably attached.
- the Ausspa tion has a diameter that is not larger than the diameter of the outlet port 2.
- a frame-shaped element 5 which has an annular frame 6, which surrounds the outside of the outlet pipe 2, and has two side tabs 7 fastened to the outlet pipe 2 at the rear, each of which merges into a vertical frame part 8 .
- a slightly inclined baffle plate 9 is attached on the two frame parts 8 .
- a pivot axis 10 is rotatably received, which is rotatably connected to a hinged cover 11.
- This hinged lid 11 has a cylindrical outer edge 12 which in the closed position (Fig. 1 to 3) rests tightly on the annular frame 6, wherein an annular flat sealing device, not shown, is arranged on the annular frame 6.
- the hinged cover 11 of the device 1 is kept closed in the rest position on the ring-shaped frame 6 of the frame-shaped element 5, two pneumatic locking devices 13 being provided in the illustrated embodiment, the more precise design of which is not important in the context of the invention. If an overpressure occurs in the container of the closed system, not shown, for example in the event of an explosion, the pressing force of the locking devices 13 is dimensioned such that they do not prevent the hinged lid 11 from opening.
- the device 1 In order to avoid immediate reclosing after opening the hinged cover 11, which could result in undesired suppression in the closed system, the device 1 according to the invention has a holding device which temporarily holds the hinged cover 11 in the open position after a pressure surge.
- This holding device initially has a pneumatic piston-cylinder unit 14, the cylinder of which is designated 15 and the piston rod of which is 16.
- the piston connected to the piston rod 16 cannot be seen in the drawings.
- the piston-cylinder unit 14 is articulated on the one hand on the rear, that is to say on the side facing away from the hinged cover 11, of the baffle plate 9 and on the other hand on at least one swivel lever 17, the at least one swivel lever 17 being connected to the swivel axis 10 of the hinged cover 11.
- the cylinder 15 of the piston-cylinder unit 14 is articulated on the rear of the baffle plate 9 and the front end of the piston rod 16 is articulated on at least one pivot lever 17.
- the device 1 has two parallel pivoting levers 17 which are spaced apart from one another and are each fixed at one end to the pivot axis 10 of the hinged cover 11 in a rotationally fixed manner and at their other outer end via a pivot axis 18th are connected to each other, the front end of the piston rod 16 being articulated on the articulation axis 18.
- a compression spring is preferably arranged between the piston and the rear end of the cylinder 15. If an overpressure occurs in the closed system, for example in the event of an explosion, the locking force of the locking devices 13 is overcome and the hinged cover 11 is released, so that it first moves from the closed rest position according to FIGS. 1 to 3 into an intermediate position according to FIG. 4 swings up to 6.
- the opening movement leads to a displacement of the piston within the cylinder 15 of the piston-cylinder unit 14 and thereby to a sliding out of the piston rod 16.
- This movement is supported by the compression spring.
- the pneumatic medium in particular compressed air
- the piston movement the pneumatic medium, in particular compressed air, is compressed on the side facing the piston rod 16 of the piston in the cylinder 15 and thus the displacement of the piston rod 16 and the piston and the pivoting movement of the hinged cover 11 is damped.
- compressed air flows from a compressed air reservoir connected to the piston-cylinder unit 14 into the rear cylinder space. This compressed air voir 19 is only shown in FIGS.
- the hinged lid 11 strikes the baffle plate 9 in a damped manner (FIG. 7).
- the piston rod 16 is extended to the maximum, the piston with the piston rod 16 is held in this position by corresponding pressurization of the pressure medium from the compressed air reservoir 19 until a pressure generated within the closed system is reduced.
- the pressure medium applied to the piston of the piston-cylinder unit 14 is released, so that the hinged cover 11 closes again.
- the locking devices 13 then engage again.
- the device 1 according to the second embodiment does not have a dome-shaped outlet connection, but only a rectangular, frame-shaped element 5, which can be attached to a correspondingly designed opening of a closed system.
- the baffle plate 9 On a narrow side of the frame-shaped element 2, the baffle plate 9 is pivoted, in such a way that it is limited to two frame springs 20 from the position shown in FIGS. 9 to 11 in a larger opening position with respect to the frame-shaped element 5 is pivotable.
- This be limited pivotability of the baffle plate 9 with respect to the frame-shaped element 5 is preferably provided in order to additionally dampen the impact of the hinged cover 11 on the baffle plate 9 when the hinged lid 11 of the device 1 is opened suddenly.
- the hinged cover 11 is hinged immediately adjacent to the baffle plate 9 on the frame-shaped element 5. For this purpose, it is non-rotatably connected to the pivot axis 10, which is pivotally mounted in the frame-shaped element 5.
- the hold-open device is designed somewhat differently in this embodiment, because there is no space available for pivoting the pivoting lever 17 downward in this embodiment.
- the two pivot levers 17 are therefore designed differently and are rotatably mounted on the pivot axis 10 of the hinged cover 11. Both pivot levers 17 spaced apart from one another, each spaced apart from pivot axis 10, have an arcuate guide recess 21 on.
- a guide bushing 22 is slidably received, which is rotatably connected to a further swivel lever 23, which is connected with its other lower end in a rotationally fixed manner to the swivel axis 10 of the hinged cover 11, as best seen in the enlarged representation according to FIG 16 emerges.
- the two pivot levers 17 are also connected to one another via a pivot axis 18 to which the front end of the piston rod 16 of the piston-cylinder unit 14 is articulated.
- the pivot axis 10 is divided in two in this embodiment and interrupted in the loading area between the two pivot levers 17. Basically, the pivot axis 10 can also be continuous.
- a stop buffer fer 24 is arranged on the respective pivot lever 17.
- the functional principle of the device according to the second embodiment is otherwise exactly the same as that according to the first embodiment according to FIGS. 1 to 8. Due to the design of the pivot lever 17 and the further pivot lever 23, however, the front end of the piston rod 16 and the two pivot levers are located 17 also in the open position of the hinged cover 11 (FIG. 15) above the height level of the frame-shaped element 5.
- the invention is not limited to the illustrated embodiments. Further configurations are possible without leaving the basic idea.
- the device 1 according to the second embodiment according to FIGS. 9 to 16 can also have a pneumatic locking device which is built up like that according to the first embodiment.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR112021012148-0A BR112021012148A2 (pt) | 2019-01-08 | 2020-01-06 | Dispositivo para sistemas fechados para compensação de surtos de pressão. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019100317.2 | 2019-01-08 | ||
DE102019100317.2A DE102019100317B3 (de) | 2019-01-08 | 2019-01-08 | Vorrichtung für geschlossene Systeme zum Ausgleich von Druckstößen |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2020144141A1 true WO2020144141A1 (de) | 2020-07-16 |
Family
ID=67848606
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2020/050143 WO2020144141A1 (de) | 2019-01-08 | 2020-01-06 | Vorrichtung für geschlossene systeme zum ausgleich von druckstössen |
Country Status (3)
Country | Link |
---|---|
BR (1) | BR112021012148A2 (de) |
DE (2) | DE102019100317B3 (de) |
WO (1) | WO2020144141A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114056790A (zh) * | 2021-11-18 | 2022-02-18 | 湖南有色冶金劳动保护研究院有限责任公司 | 一种化工罐体用联锁装置 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3602386A1 (de) | 1986-01-28 | 1987-07-30 | Altmayer Planungs Konstruktion | Explosionsklappe |
DE202017105238U1 (de) * | 2016-09-21 | 2017-12-22 | Thorwesten Vent Gmbh | Vorrichtung für geschlossene Systeme zum Ausgleich von Druckstößen |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3037737A (en) * | 1958-12-24 | 1962-06-05 | Rappold & Co G M B H Fa | Explosion door particularly for blast furnace gas collectors |
IT1216319B (it) * | 1986-07-14 | 1990-02-22 | Ansaldo Spa | Valvola automatica servoassistita ad apertura rapida |
DE9404593U1 (de) * | 1994-03-18 | 1994-05-26 | Thorwesten, Albert, 59269 Beckum | Vorrichtung zum Fixieren der Schließstellung einer Explosionsklappe |
-
2019
- 2019-01-08 DE DE102019100317.2A patent/DE102019100317B3/de active Active
- 2019-08-13 DE DE202019104464.0U patent/DE202019104464U1/de active Active
-
2020
- 2020-01-06 BR BR112021012148-0A patent/BR112021012148A2/pt not_active IP Right Cessation
- 2020-01-06 WO PCT/EP2020/050143 patent/WO2020144141A1/de active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3602386A1 (de) | 1986-01-28 | 1987-07-30 | Altmayer Planungs Konstruktion | Explosionsklappe |
DE202017105238U1 (de) * | 2016-09-21 | 2017-12-22 | Thorwesten Vent Gmbh | Vorrichtung für geschlossene Systeme zum Ausgleich von Druckstößen |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114056790A (zh) * | 2021-11-18 | 2022-02-18 | 湖南有色冶金劳动保护研究院有限责任公司 | 一种化工罐体用联锁装置 |
CN114056790B (zh) * | 2021-11-18 | 2023-03-21 | 湖南有色冶金劳动保护研究院有限责任公司 | 一种化工罐体用联锁装置 |
Also Published As
Publication number | Publication date |
---|---|
BR112021012148A2 (pt) | 2021-09-08 |
DE102019100317B3 (de) | 2019-10-31 |
DE202019104464U1 (de) | 2019-08-22 |
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