WO2001014246A1

WO2001014246A1 - Compact tank farm and a method for mounting same

Info

Publication number: WO2001014246A1
Application number: PCT/DE2000/002607
Authority: WO
Inventors: Sieghard Tiedtke; Norman Jung; Henry Beckert; Norbert Hellmann; Dieter GRÜNSTEIDEL
Original assignee: Chemie- Und Tankanlagenbau Reuther Gmbh
Priority date: 1999-08-04
Filing date: 2000-08-01
Publication date: 2001-03-01
Also published as: AU7402200A; ATE309174T1; DE19937075A1; WO2001014246A8; EP1117613A1; EP1117613B1; DE10082453D2; DE50011559D1

Abstract

The invention relates to a compact tank farm and a method for mounting the same. The compact tank farm, especially a petrol station for the delivery of fuel, comprises one or several fuel tanks which are stored underground, at least one dome shaft which is arranged on the tank, a filling shaft and a petrol pump shaft, at least one wall that encompasses the shafts, a roof that is supported by roof supports, connecting pipelines and pumps and petrol pumps, whereby the fuel tank and the shafts, the roof supports and the roof, the connecting pipelines, the pumps and the petrol pumps are configured as compact, prefabricated subassembly respectively. The aim of the invention is to improve the aforementioned tank farm in such a way that the buoyancy control of the subassemblies or -units which have no common foundation and are placed underground is still securely guaranteed while less concrete is used and all subassemblies are entirely sealed against liquids. To this end, each fuel tank (6) is encompassed by at least two yoke-like buoyancy control devices (4) which are oriented towards the container axis (c-c) and are connected to each other by means of horizontal forcing levers (23). Said control devices form a support frame (21) respectively which is composed of an upper and a lower component (14, 3) that are connected to each other involving shearing strength. The upper component (14) leaves open a chamber (22) for receiving the shafts (8-20). Distance or protection tubes (28) for receiving connecting pipelines are provided at said chamber. Said tubes are arranged vertically in relation to the container axis. A pipeline route (27) which is situated in the alignment of the container axis and connects the shafts to each other is provided at said chamber. Said street forms a closed pipeline circle (29) that extends over all the shafts and serves for forced ventilation. The tanks (6) can be fixed to the lower component (3) by means of anchor bands (12).

Description

Compact tank system and method for its construction

The invention relates to a compact tank system, in particular a petrol station for dispensing fuel, with one or more fuel tanks stored underground, at least one dome shaft, each arranged on the tank, a dispensing column shaft and a filling shaft, at least one wall surrounding the shafts, one of

_* Roof supports supported roof, connecting pipelines, pumps and petrol pumps, whereby fuel tanks and manholes, roof supports and roof, connecting pipelines, pumps and petrol pumps are each designed as compact, prefabricated structural units, and the container rests on a compacted sand bed prepared by the customer.

The invention further relates to a method for installing a compact tank system, in particular a gas station for dispensing fuel, in which the function-determining Assemblies, for example fuel tanks with dome, filling and fuel pump manholes, roof supports and roof, connecting pipes, pumps and fuel pumps, prefabricated, transported to the construction site and assembled there.

From WO 94/20341 a generic compact tank system, in particular a gas station for the delivery of fuel is known. This known fuel delivery station consists of at least one underground fuel tank, a pump island including at least one fuel pump for the delivery of the fuel contained in the fuel tank and a pump protection roof. The petrol station is provided with a common foundation on which the fuel tanks, the pump island and the pump protection roof are connected directly or indirectly to one another. The petrol station is designed so that it can be transported to the installation site as a ready-to-install block.

The foundation for the well-known petrol station consists of a continuous reinforced concrete slab that is placed or cast at the installation location. The petrol station or the petrol station consisting of blocks rests on a single foundation, which can also be designed as a trough for protection in the event of leaks.

Such a common foundation designed to protect against buoyancy must either be prepared on site by means of complex formwork, tying and stripping or by inserting prefabricated concrete slabs onto the formation, which in turn binds expensive transport equipment with high crane performance.

Furthermore, although the foundation can be designed as a trough for collecting leaks, the entire shaft structure is However, it is not liquid-tight and therefore harbors the risk of environmentally harmful leaks into the ground.

Furthermore, an underground concrete construction for the storage of containers with dangerous liquids is known from US Pat. No. 5,037,239, in which prefabricated units are assembled on site to form the construction.

The modular structure of petrol stations is also well known from WO 97/25230, in which the petrol station essentially consists of three modules, namely a foundation module including an underground fuel tank with supply and removal lines, a fuel delivery module with a pump island and a roof module.

The foundation module comprises half-shell-like bearings that are arranged perpendicular to the container axis and rest on a flat surface. The sole buoyancy protection only through the mass of the tank module is by no means safe, because the tank itself experiences buoyancy when the groundwater level is high.

In this prior art, the object of the invention is to improve a tank system of the type mentioned at the outset in such a way that the buoyancy protection of the subassemblies or units which are laid underground remains safely ensured without a common foundation while at the same time saving on the concreting with complete liquid sealing of all subassemblies ,

This object is achieved in that each fuel tank of at least two perpendicular to Aligned container axis aligned, interconnected by horizontal pressure bars yoke-like buoyancy locks, which also form a support frame composed of shear-proof interconnected upper and lower part, the upper part leaving a space for receiving the shafts, on the perpendicular to the container axis spacing and Protective pipes for the reception of connecting pipelines and a pipeline route running in the direction of the container axis, connecting the shafts to one another, which together form a closed pipeline circuit for forced ventilation across all shafts, and that the containers are fixed to the lower part by anchor bands.

According to a further preferred feature of the tank system according to the invention, the buoyancy protection consists of reinforced concrete or a steel structure.

The lower part of the buoyancy protection is U-shaped according to a preferred further feature of the invention. The upper part has such a profile, which engages in the U-profile when it is placed on the lower part, the upper and lower part being locked by a tube piece pushed transversely through the upper and lower part.

In a preferred further embodiment of the invention, each lower part is assigned a separate sole plate for foundation in the sand bed. This bottom plate is always necessary when the groundwater level is high.

In a preferred further embodiment of the tank system according to the invention, the lower part is provided with a rubber pad supporting bearing shell for the storage of the container during transport or alignment on the sand bed.

According to a further preferred feature of the complete tank system according to the invention, the upper part of the buoyancy protection has a height-adjustable support plate for receiving the roof supports.

The manholes mounted on the fuel tank, such as the dome, fill and fuel pump manholes, are combined to form a basic body, the height of which is selected so that the fuel tank assembly does not exceed the permissible transport height. In a further preferred embodiment of the invention, this base body is also assigned a prefabricated completion body.

Another preferred feature of the compact tank system according to the invention provides that the spacer and protective pipes and the pipeline route connecting the shafts are designed to be liquid-tight, so that the connecting pipelines laid in the spacer and protective pipes and the pipeline route are securely encapsulated and can therefore be implemented with a single wall ,

At least one fan, for example arranged in the cathedral shaft or the pipeline route, also ensures that forced ventilation of the pipeline route takes place and any gas mixtures that occur are expelled through a ventilation pipe.

In a preferred further embodiment of the compact tank system according to the invention, double-walled containers with insulation according to DIN 6607 are provided as the fuel containers, so that an environmentally friendly sealing of the containers from the ground is guaranteed.

The task is further solved by a method for setting up a compact tank system in the following steps:

a) additional prefabrication of yoke-type buoyancy locks which can be assembled from the upper and lower part with the bearing shell and the completion body which can be placed on the shafts,

b) production of a compacted sand bed as foundation sole and optional introduction of sole plates for supporting the buoyancy protection for the fuel tanks,

c) placing two lower parts of the buoyancy protection on the sand bed, aligning the lower parts to each other,

d) supporting the prefabricated container assembly

(Fuel tank with manholes) onto the bearing shell of the lower part of step c) and anchoring the tank using anchor bands on the lower part,

e) repeating steps c) to d) depending on the number of container assemblies to be assembled,

f) placing the upper parts of the buoyancy protection on the lower parts and locking them together,

g) layer-by-layer embedding of the tank assembly by slurrying with sand up to the apex of the fuel tanks in the ground, h) mounting spacer and protective pipes and pipeline routes on the tank assemblies,

i) connecting all spacer and protective tubes and pipeline routes of step f) to form a pipeline circuit for forced ventilation,

j) placing the completion body on the base body with subsequent post-insulation,

k) continuing to embed the container assembly according to step i) until approximately the top edge of the completion body is reached,

1) Raising, adjusting the height and attaching the roof supports to the upper parts of the buoyancy protection for receiving the roof and

m) Completion of the container assemblies with petrol pumps, connecting pipes, pumps, drive units, measuring, control and regulating devices.

The task is also solved by a method with the following steps:

aa) additional prefabrication of yoke-like buoyancy locks designed for the fuel tanks, which can be assembled from the upper and lower parts with a bearing shell, and completion bodies which can be placed on the shafts,

bb) summarizing all fuel tanks belonging to a tank system with dome, filling and petrol pumps O 01/14246

manhole, the manholes connecting the ducts for ventilation to a common functional unit, placing this functional unit on the aligned lower parts of step aa) and anchoring the functional unit by means of anchor bands on the lower parts,

cc) transporting this completed functional unit to the installation site after step bb),

dd) production of a compacted sand bed as foundation sole and optional introduction of foundation plates for supporting the buoyancy protection for the functional unit,

ee) set down the anchors on the lower parts

Functional unit on the sand bed and connecting with the foundation plates of step dd),

ff) placing the upper parts of the buoyancy protection on the lower parts and locking them together,

gg) layering the functional unit by slurrying with sand up to approximately the apex of the container as a support in the ground,

hh) placing the completion body on the

Base body and the spacer and protective tubes with subsequent post-insulation,

ii) continuing to embed the functional unit in accordance with step gg) until approximately the upper edge of the completion body is reached, jj) Raising, adjusting the height and fastening the

Roof supports on the upper parts of the buoyancy protection for receiving the roof and

kk) Completion of the functional unit with petrol pumps, connecting pipes, pumps, drive units, measuring, control and regulating devices.

The compact tank system according to the invention is distinguished by the fact that it can be erected at the installation site individually or in a very high degree of prefabrication without a common foundation. The construction times are considerably shortened and also simplified by the elimination of the entire concrete base. The special liquid-tight encapsulation of the media-carrying lines, as it were in a protective tube or a pipeline route, enables the lines to be single-walled. Due to the fact that the pipeline route can also be used as forced ventilation, any leaks that may occur can be quickly identified and, on the other hand, the dry laying of the pipelines ensures a long service life. The compact tank system according to the invention is securely based on its special buoyancy protection and ensures all aspects of an operation of these petrol stations that is adapted to environmental protection.

Further advantages and details emerge from the following description with reference to the attached drawings.

The invention will be explained in more detail below using an exemplary embodiment. s show:

Fig. 1 is a sunken according to the invention

Compact tank system with tank assembly, shaft structures, buoyancy protection, petrol pumps and roof structure in side view,

2 is a side view of the buoyancy protection,

Fig. 3 is a section along the line A-A of Fig. 1 and

Fig. 4 is a plan view of two combined

Container assemblies with a basic representation of forced ventilation.

1 shows a correspondingly excavated excavation pit with a prepared foundation base, on the compacted sand bed 1 of which two base plates 2 made of reinforced concrete are placed.

A lower part 3 of a U-shaped buoyancy safety device 4 is bolted to the sole plates 2. The inner periphery of the lower part 3 is provided with an approximately 20 cm wide bearing shell 5, which carries a 1 to 2 cm thick rubber pad. The two base plates 2 with their lower parts 3 are aligned with one another in such a way that the bearing shells 5 are in alignment.

The prefabricated double-walled fuel tank 6, which is insulated according to DIN 6607, is placed and aligned on the lower parts 3 with their bearing shells 5 using a crane (not shown). The chambered fuel tank 6 is provided with an elongated base body 7 for receiving the individual shafts (dome, petrol pump and filling shaft) 8, 9 and 10, which is liquid-tight with the outer jacket of the Fuel tank 6 is welded. A prefabricated completion body 11 is assigned to this base body 7 and is connected to the base body 7 in a liquid-tight manner on site. The horizontal division of the shaft structure on the fuel tank 6 makes it possible to maintain the permissible transport height in the overall height of the fuel tank 6. After the container 6 with the integrated base body 7 has been placed and aligned on the bearing shells 5, as shown in FIGS. 2 and 3, anchor bands 12 are placed on the front part of the container 6, attached to the lower part 3 and tensioned by means of turnbuckles 13. The anchor bands 12 are fixed on both sides of the bearing shells 5 on the lower part 3.

The upper part 14 of the buoyancy protection 4 is placed on the fuel tank 6 secured on the lower part 3. This upper part 14, with its legs 16 spread apart from the horizontal web 15, engages over the fixed fuel tank 6. The lower part 3 of the buoyancy lock 4 has a U-shaped end profile 18 on its vertically projecting arms 17 (see FIG. 3). The legs 16 of the upper part 14 have an end-sided box-shaped end piece 19 which engages in the end profile 18 when it is placed on.

End profile 18 and end piece 19 are locked by a tube piece 20 which passes through the end profile 18 and the end piece 19 perpendicular to the direction of insertion. Lower and upper part 3 and 14 thus form a support frame 21 which encloses the fuel tank 6 perpendicular to the tank axis CC. The legs 16 of the upper part 14 spread apart from the web 15 form a space 22 for the individual shafts above the apex S of the fuel tank 6. At least two support frames 21 are provided for each fuel tank 6. In the ends of the legs 16 of the upper part 14 facing away from the web 15, bores are made coaxially to the container axis CC, into which push rods 23 are inserted. The push rods 3 connect the two support frames 21 to one another, so that the support frames 21 can support one another. On the web 15 of the upper part 14, a support plate 24 for the support of the roof supports 25 is fastened in a height-adjustable manner.

FIG. 4 shows two fuel tanks 6 with structures combined to form a tank assembly 26. The dome shafts 8, fuel dispenser shafts 9 and filling shafts 10 mounted on the chambered fuel tank 6 are connected by a pipeline route 27 which runs on the apex S in the tank axis CC and which is closed with spacer and protective tubes 28 which connect the shafts of the fuel tanks 6 lying parallel to one another Form pipe circuit 29. At least one fan 30 is positioned in the pipeline circuit 29, which ensures constant ventilation of the shafts 8, 9, 10 of the pipeline route 27 and the spacer and protective tubes 28 by means of a ventilation tube 31. At the same time, connecting pipelines, not shown, are laid in the spacer and protective tubes 28.

The method according to the invention will now be described according to FIGS. 1 and 4.

After prefabrication of the container assembly, consisting essentially of fuel tank 6 with base body 7, completion body 11, pipeline routes 27, spacer and protective tubes 28, roof supports 25 and buoyancy locks 4, the base plates 2 are placed on the already prepared sand bed. On the sole plates

2, the lower parts 3 are connected to the base plates 2 in preparation for the assembly of the container assembly. The container assembly is placed on the bearing shells 5, anchored to the lower part 3 with anchor bands 11 and the upper part 14 placed on the lower part 3. Upper part 14 and lower part

3 are locked together. The next container assembly is also set down and secured. The container assemblies fixed in this way are then slurried in layers with sand approximately until the apex S of the container 6 is reached. By slurrying with sand, the fuel tanks 6 are supported on all sides. The completion body 11 is then connected to the base body 7 in a liquid-tight manner and the spacer and protective tubes 28 are laid between the parallel fuel tanks 6.

With the foundation of the container assembly according to the invention, the further construction of the complete tank system is carried out.

The container assemblies can already be prefabricated into a functional unit, consisting essentially of two fuel tanks 6 provided with corresponding structures, which are pre-assembled on lower parts 3 and anchored to them by means of the anchor bands 11. Likewise, the functional unit is already provided with parts of the pipe circuit 29 which contains the connecting pipes. This functional unit is placed on the sole plates 2 and connected to the sole plates. The functional unit is then slurried with sand until the base body 7 is reached. Subsequently, the base body 7 are connected to the completion body 11 and the spacer and protective tubes 28 in a liquid-tight manner. Base body 7 and completion body 11 are re-insulated. The construction continues with a further slurrying until the apex S of the fuel tank 6 is reached.

This is followed by the further assembly of the compact tank system with the connection of the petrol pumps, the regulation and control technology, the roof supports, etc.

List of the reference symbols used

Foundation sole 1

Sole plate 2

Lower part of 4 3

Buoyancy protection 4

Bearing shell 5 fuel tank 6

Base body of 8, 9, 10 7

Cathedral shaft 8

Dispenser shaft 9

Filling shaft 10 completion body from 8.9.10 11

Anchor bands 12

Turnbuckles 13

Top of 4 14

Bridge of 14 15 legs of 14 16

Arms of 3 17

End profile from 3 18

Tail of 16 19

Pipe piece 20 support frame 21

Room in 21 22

Push rods 23

Support plate 24

Roof support 25 Container assembly 26

Rohrleitungstrasse 27

Spacer and protection tubes 28

Pipe circuit 29 Fan 30

Vent pipe 31 apex of 6 p

Container axis C-C

4 sheets of drawings

Claims

claims

1.Compact tank system, in particular a petrol station for the delivery of fuel, with one or more parallel, underground fuel tanks, at least one dome shaft, filling shaft and filling column shaft arranged on the tank, at least one wall surrounding the shafts, a roof supported by roof supports , connecting pipelines, pumps and petrol pumps, fuel tanks and manholes, roof supports and roof, connecting pipelines, pumps and petrol pumps each being designed as a compact, prefabricated assembly group, characterized in that each fuel tank (6) has at least two perpendicular to the tank axis (CC) Aligned yoke-like buoyancy locks (4) connected to one another by horizontal pressure rods (23) are enclosed, each of which at the same time forms a support frame (21) composed of upper and lower parts (14, 3) which are connected to each other in a shear-resistant manner, the top il (14) leaves a space (22) for receiving the shafts (8,9,10), on which spacer or protective tubes (28) arranged perpendicular to the container axis for receiving connecting pipelines and one in line with the container axis, the ducts (8, 9, 10) connecting the pipeline route (27) are provided, which form a closed duct circuit (29) with one another over all the ducts for forced ventilation, and that the containers (6) are secured to the lower part (3 ) can be fixed.

2. Compact tank system according to claim 1, so that the buoyancy protection (4) consists of reinforced concrete or of a steel structure.

3. Compact tank system according to claim 1 and 2, characterized in that the lower part (3) is U-shaped and the upper part (14) has an end piece (19) which in the end profile (18) of the lower part (3) Attachment engages, the upper and lower part can be locked by a pipe section (20).

4. Compact tank system according to claim 1 and 2, d a d u r c h g e k e n n z e i c h n e t that each lower part (3) is optionally assigned a separate base plate (2) for foundation.

5. Compact tank system according to claims 1 to 3, so that the lower part (3) is provided with a rubber shell bearing shell (5) for supporting the container.

6. Compact tank system according to claim 1, characterized in that the upper part (14) is provided with a height-adjustable support plate (24) for receiving the roof supports (25).

7. Compact tank system according to claim 1, characterized in that the shafts (8, 9, 10) mounted on the container (6) are combined to form a base body (7), to which a prefabricated completion body (11) is assigned, base body and completion body can be connected to one another in a liquid-tight manner.

8. Compact tank system according to claim 1, so that the spacer and protective tubes (28) and the pipeline route (27) are designed to be liquid-tight.

9. Compact tank system according to claim 1 and 8, so that the connecting pipes laid in the spacer and protective tubes (28) are single-walled.

10. Compact tank system according to one or more of the preceding claims, d a d u r c h g e k e n n z e i c h n e t that at least one fan (30) arranged in the dome shaft or in the ventilation lines is assigned to the pipeline circuit (29).

11. Compact tank system according to claim 1 and 10, characterized in that the pipe circuit (29) is connected to at least one vent pipe (30).

12. Compact tank system according to claim 1, that the fuel tank (6) is designed as a double-walled tank with insulation according to DIN 6607.

13.Procedure for setting up a compact tank system, in particular a petrol station for dispensing fuel, in which the function-determining assemblies, for example fuel tanks with dome, fill and fuel pump manholes, roof supports and roof, connecting pipelines, pumps and petrol pumps, prefabricated, to the construction site transported and assembled there in the following steps:

a) additional prefabrication of yoke-like buoyancy locks designed for the fuel tanks, which can be assembled from the upper and lower part with a bearing shell, and completion bodies which can be placed on the shafts,

b) production of a compacted sand bed as foundation sole and introduction of foundation plates for supporting the buoyancy protection for the fuel tanks,

d) supporting the prefabricated container assembly

(Fuel tank with manholes) on the bearing shell of the lower part of step c) and anchoring the tank using anchor bands on the lower part, e) repeating steps c) to d) depending on the number of container assemblies to be assembled,

g) layered embedding of the container assembly by slurrying with sand to the apex of the

Fuel tank as a support for the tank in the ground,

h) mounting spacer and protective pipes and pipeline routes on the tank assemblies,

k) continuing the embedding of the container assembly according to step i) until approximately reaching the upper edge of the completion body,

1) Raising, adjusting the height and fastening the

14.Procedure for the construction of a compact tank system, in particular a gas station for the delivery of fuel, in which the function-determining assemblies, for example fuel tanks with dome, filling and fuel pump manholes, roof supports and roof, connecting pipes, pumps and fuel pumps, prefabricated, to the construction site transported and assembled there in the following steps:

aa) additional prefabrication of on the

Fuel tank designed, yoke-like buoyancy locks that can be assembled from the upper and lower part with a bearing shell and completion roads that can be placed on the shafts,

bb) summarizing all the fuel tanks belonging to a tank system with dome, filling and fuel pump manholes connecting the manholes

Pipeline routes for ventilation to a common functional unit, placing this functional unit on the lower parts of step a) aligned with one another and anchoring the functional unit by means of anchor bands to the lower parts,

cc) transporting this completed functional unit to the installation site after step b),

dd) production of a compacted sand bed as foundation sole for supporting the buoyancy protection for the functional unit, ee) set down the anchors on the lower parts

Functional unit on the sand bed and connecting with the buoyancy protection of step d),

gg) layered embedding of the container assembly by slurrying with sand as a support up to the apex of the container,

hh) placing the completion body on the base body and the spacer protection tubes with subsequent post-insulation,

ii) continuing the embedding of the container assembly according to step gg) until approximately reaching the upper edge of the completion body,

jj) Raising, adjusting the height and fastening the

kk) Completion of the container assemblies with petrol pumps, connecting pipes, pumps, drive units, measuring, control and regulating devices.