GB2077795A - Improved sound-attenuating enclosure - Google Patents
Improved sound-attenuating enclosure Download PDFInfo
- Publication number
- GB2077795A GB2077795A GB8018136A GB8018136A GB2077795A GB 2077795 A GB2077795 A GB 2077795A GB 8018136 A GB8018136 A GB 8018136A GB 8018136 A GB8018136 A GB 8018136A GB 2077795 A GB2077795 A GB 2077795A
- Authority
- GB
- United Kingdom
- Prior art keywords
- enclosure
- ring beam
- panels
- roof
- base
- 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.)
- Granted
Links
- 230000004888 barrier function Effects 0.000 claims abstract description 8
- 239000004567 concrete Substances 0.000 claims abstract description 4
- 239000000565 sealant Substances 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 3
- 239000010959 steel Substances 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 5
- 239000011178 precast concrete Substances 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 230000000717 retained effect Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229920001021 polysulfide Polymers 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/8218—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only soundproof enclosures
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/0007—Base structures; Cellars
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H1/00—Buildings or groups of buildings for dwelling or office purposes; General layout, e.g. modular co-ordination or staggered storeys
- E04H1/12—Small buildings or other erections for limited occupation, erected in the open air or arranged in buildings, e.g. kiosks, waiting shelters for bus stops or for filling stations, roofs for railway platforms, watchmen's huts or dressing cubicles
- E04H1/1205—Small buildings erected in the open air
- E04H1/1238—Shelters for engines, e.g. electrical meter housings
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H5/00—Buildings or groups of buildings for industrial or agricultural purposes
- E04H5/02—Buildings or groups of buildings for industrial purposes, e.g. for power-plants or factories
- E04H5/04—Transformer houses; Substations or switchgear houses
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B2001/8263—Mounting of acoustical elements on supporting structure, e.g. framework or wall surface
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Electromagnetism (AREA)
- Acoustics & Sound (AREA)
- Power Engineering (AREA)
- Building Environments (AREA)
Abstract
A sound-attenuating enclosure comprises a concrete base (1), a ring beam (3) and wall panels (4) and roof panels. The wall panels rest on the beam (3) and are connected to an internal steel work frame near their top edges, which frame supports the roof panels. The gaps between wall panels are filled with a resilient sealant and bridged by an acoustically dense barrier strip (14, 14a-Figure 3 not shown with abstract). <IMAGE>
Description
SPECIFICATION
Improved sound-attenuating enclosure
This invention relates to an improved soundattenuating enclosure for housing static equipment which might otherwise present a noise nuisance to the immediately surrounding area.
Sound is one form of environmental pollution which is no longer acceptable and there is a need for a simple form of enclosure which can be quickly erected around noisy equipment.
The invention has particular utility in obviating the annoyance caused by hum from a large threephase transformer.
According to the present invention a soundattenuating enclosure comprises a concrete base, a perimeter frame of steel work erected on the base to provide vertical corner stanchions and horizontal roof beams, a ring beam supported by the base and disposed around the frame, a plurality of pre-cast concrete wall panels extending from the ring beam to above the roof beams, each said wall panel being secured at its lower edge to the ring beam and secured adjacent to the top thereof to a respective outer one of the roof beams, and a plurality of pre-cast concrete roof panels supported on the roof beams, the gap between adjacent wall panels at least on the outer surface of the enclosure being filled by a resilient sealant and including a sound barrier strip bridging between slots in the confronting edges of the adjacent wall panels.
Suitably the perimeter frame is rectangular in plan and along the long dimension of the enclosure is formed into two outer sections and one intermediate section, each said section being free-standing and removable from the adjacent section or sections. Making the frame in sections which are independently demountable, permits the enclosure to be opened up to remove just part of the equipment from the enclosure (e.g. just one phase of a three-phase transformer).
The ring beam can be cast integrally with the base or can be formed by grouting pre-cast slabs onto a flat base. Suitably the ring beam includes up-standing dowels which project beyond the upper surface of the ring beam, these dowels serving to locate the lower edges of the wall panels by means of holes formed in a lower edge rim of each wall panel.
The ring beam, being a continuous obstruction around the frame, acts as a dam to prevent spillage of liquid from the enclosure (e.g. in the event of accidental oil leakage from a transformer in the enclosure). Suitably the volume of liquid which can be retained on the base without flowing over a top edge of the ring beam should be greater than the maximum accidental oil spillage possible.
The attachment of the upper end of each wall panel to the frame can be by bolts passing through apertured metal brackets cast into the wall panel adjacent to the upper edge thereof, the fixing of those bolts being such as to allow some relative movement in the longitudinal direction of the wall panel between the wall panel and the roof beam such as is occasioned by differing thermal expansions on the occasion of temperature changes.
The panels defining corners of the enclosure can have mitred edges, the confronting mitred edges also containing a slot-located sound barrier strip.
Each sound barrier strip can be a strip of metal or dense plastics material extending from the ring beam at least to the roof beam of the wall panels between which it is located.
One or more of the wall panels can incorporate a sound attenuating door and/or a window.
The invention will now be further described, by way of example, with reference to the accompanying drawings, in which: Figure 1 is a side elevation of an enclosure in accordance with the invention.
Figure 2 is a plan of the enclosure of Figure 1 with the roof removed,
Figure 3 is an enlarged horizontal cross-section through one corner of the enclosure of Figure 1,
Figure 4 is a section through the foot of one wall panel showing the mode of fixing to the ring beam, and
Figure 5 is a section through the top of one wall panel showing the mode of fixing to a roof beam.
The enclosure shown in Figures 1 and 2 comprises a base 1, a rectangular steelwork frame 2 comprising corner uprights 2a, intermediate uprights 2b, and roof beams 2c, a ring beam 3, wall panels 4 and roof panels 5.
The wall panels 4 are of pre-cast concrete with suitable mesh reinforcement (not shown) incorporated therein. A decorative facing 6 is provided on the outer surface of each panel 4 although this has only been shown on a few panels in Figure 1.
The wall panels rest on the rectangular ring beam 3 which (see Figure 4) is shown as a separate structure grouted with a bed of mortar (at 7) to the base 1 and sealed (e.g. with a polysulphide sealant) to the base (at 7a) and to the frame (at 7b). A bolt (3a) secures the ring beam 3 to the frame. Stainless steel dowels 8 (two per panel 4) locate in holes 9 in the base of each panel 4 and grouting 10 is used to bond the panels in place on the ring beam 3. A resilient seal layer 11 is located below each panel 4 on the ring beam 3.
Each panel is secured to one of the outermost roof beams 2c in the manner shown in Figure 5, a bracket 12 being cast into the panel to accommodate each stainless steel bolt. The bolt holes on the outer surface of the panel can be filled in with concrete after fixing the panels in place.
Each panel has longitudinal slots 13 formed along each long edge and after erecting the panels in place, a strip 14 of metal or PVC plastics material is slipped into the slots to block the direct sound path between the panels and provide an acoustically dense barrier in the inter-panel gaps.
The slots 1 3a in the mitred edges of the smaller corner panels (see Figure 3) also contain an acoustically dense strip 1 4a.
Weatherproof seals 1 5 of a polysulphide plastics material are applied to the inter-panel gaps on both inside and outside of the enclosure.
The construction used at the roof can be seen from Figure 5. The outer roof panel 5 is provided with a gutter recess 1 6 and waterproof sheet material 1 7 (e.g. roofing felt) is used to bridge gaps between adjacent roof panels 5 and between the outermost roof panels and the upper inside edge of the wall panels 4. A triangular section beam 18 of wood is shown supporting the outermost strip of sheet material 1 7.
A door 1 9 can be provided at a suitable location and cowls 20 are provided in the roof to permit cables to pass into the enclosure to the transformer located therein.
An important feature of the enclosure shown in the drawings is the division of the frame 2 into two outer sections A and C and an intermediate section B. The steelwork of the frame 2 is designed so that the roof beams between the corner uprights 2a and the adjacent intermediate
upright 2b and between adjacent uprights 2b (in the case of section B) can be removed to allow
one section of the enclosure to be dismantled without seriously affecting the other sections. This
is important if it proves necessary to remove one section of a three-phase transformer. The section of the enclosure housing the defective phase-part of the transformer can then be exposed, the necessary parts of the ring beam 3 on one side of the enclosure being lifted off the base so that heavy lifting gear can be brought up to the defective phase-part for removal and replacement.
The height "h" of the ring beam 3 (see Figure 4) should be chosen so that oil spillage in the enclosure cannot result in oil flowing over the top of the ring beam and contaminating the surrounding area.
Although it is preferred to pre-fabricate the ring beam and lay it in sections on the base 1, it is not ruled out that a cast-in-situ ring beam could be used, although, of course, such a construction would require partial destruction of the ring beam when a heavy transformer part had to be removed from the enclosure.
Claims (11)
1. A sound-attenuating enclosure comprising a concrete base, a perimeter frame of steel work erected on the base to provide vertical corner stanchions and horizontal roof beams, a ring beam supported by the base and disposed around the frame, a plurality of pre-cast concrete wall panels extending from the ring beam to above the roof beams, each said wall panel being secured at its lower edge to the ring beam and secured adjacent to the top thereof to a respective outer one of the roof beams, and a plurality of pre-cast concrete roof panels supported on the roof beams, the gap between adjacent wall panels at least on the outer surface of the enclosure being filled by a resilient sealant and including an acoustic barrier strip bridging between slots in the confronting edges of the adjacent wall panels.
2. An enclosure as claimed in claim 1, in which the perimeter frame is rectangular in plan and along the long dimension of the enclosure is 9 formed into two outer sections and one intermediate section, each said section being freestanding and removable from the adjacent section or sections.
3. An enclosure as claimed in claim 1 or claim 2, in which the ring beam is cast integrally with the base.
4. An enclosure as claimed in claim 1 or claim 2, in which the ring beam is formed by grouting pre-cast slabs onto a flat base.
5. An enclosure as claimed in any preceding claim, in which the ring beam includes upstanding dowels which project beyond the upper surface of the ring beam, these dowels serving to locate the lower edges of the wall panels by means of holes formed in a lower edge rim of each wall panel.
6. An enclosure as claimed in any preceding claim, in which the attachment of the upper end of each wail panel to the frame is made by bolts passing through apertured metal brackets cast into the wall panel adjacent to the upper edge thereof, the fixing of these bolts being such as to allow some relative movement in the longitudinal direction of the wall panel between the wall panel and the roof beam such as is occasioned by differing thermal expansions on the occasion of temperature changes.
7. An enclosure as claimed in any preceding claim, in which panels defining the corners thereof have mitred edges, the confronting mitred edges also containing a slot-located acoustic barrier strip.
8. An enclosure as claimed in any preceding claim, in which each acoustic barrier strip is a strip of metal or dense plastics material extending from the ring beam at least to the roof beam of the wall panels between which it is located.
9. An enclosure as claimed in any preceding claim, in which one or more of the wall panels incorporates a sound attenuating door and/or a window.
10. Sound-attenuating enclosure substantially as hereinbefore described with reference to, and as illustrated in, the accompanying drawings.
11. An enclosure as claimed in any preceding claim housing at least one oil-filled transformer, in which the ring beam defines a continuous obstruction around the frame to act as a dam to prevent leakage of transformer oil from the enclosure, whereby the volume of oil which can be retained on the base without flowing over the ring beam is greater than the maximum accidental oil spillage possible from the transformer(s) therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8018136A GB2077795B (en) | 1980-06-03 | 1980-06-03 | Improved sound-attenuating enclosure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8018136A GB2077795B (en) | 1980-06-03 | 1980-06-03 | Improved sound-attenuating enclosure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2077795A true GB2077795A (en) | 1981-12-23 |
| GB2077795B GB2077795B (en) | 1983-08-03 |
Family
ID=10513791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8018136A Expired GB2077795B (en) | 1980-06-03 | 1980-06-03 | Improved sound-attenuating enclosure |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2077795B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2615228A1 (en) * | 1987-05-13 | 1988-11-18 | Segrams Sarl | Method for constructing and installing retaining pans and retaining barriers for machines and appliances containing liquids which are dangerous, detrimental to health or impractical |
| WO2009034215A1 (en) | 2007-09-14 | 2009-03-19 | Domingo Garcia Cotes | Inhabitable construction |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106013484A (en) * | 2016-06-22 | 2016-10-12 | 四川电力设计咨询有限责任公司 | Noise reducing method for 500 kV transformer substation |
-
1980
- 1980-06-03 GB GB8018136A patent/GB2077795B/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2615228A1 (en) * | 1987-05-13 | 1988-11-18 | Segrams Sarl | Method for constructing and installing retaining pans and retaining barriers for machines and appliances containing liquids which are dangerous, detrimental to health or impractical |
| WO2009034215A1 (en) | 2007-09-14 | 2009-03-19 | Domingo Garcia Cotes | Inhabitable construction |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2077795B (en) | 1983-08-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PG | Patent granted |