GB2031490A – Arrangement for protecting a water-bearing construction against water pressure waves
– Google Patents
GB2031490A – Arrangement for protecting a water-bearing construction against water pressure waves
– Google Patents
Arrangement for protecting a water-bearing construction against water pressure waves
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Info
Publication number
GB2031490A
GB2031490A
GB7932258A
GB7932258A
GB2031490A
GB 2031490 A
GB2031490 A
GB 2031490A
GB 7932258 A
GB7932258 A
GB 7932258A
GB 7932258 A
GB7932258 A
GB 7932258A
GB 2031490 A
GB2031490 A
GB 2031490A
Authority
GB
United Kingdom
Prior art keywords
plates
water
chamber
channel
pressure waves
Prior art date
1978-09-18
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
Application number
GB7932258A
Other versions
GB2031490B
(en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kraftwerk Union AG
Original Assignee
Kraftwerk Union AG
Priority date (The priority date 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 date listed.)
1978-09-18
Filing date
1979-09-18
Publication date
1980-04-23
1979-09-18
Application filed by Kraftwerk Union AG
filed
Critical
Kraftwerk Union AG
1980-04-23
Publication of GB2031490A
publication
Critical
patent/GB2031490A/en
1982-08-25
Application granted
granted
Critical
1982-08-25
Publication of GB2031490B
publication
Critical
patent/GB2031490B/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
E—FIXED CONSTRUCTIONS
E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
E02B—HYDRAULIC ENGINEERING
E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
E02B8/06—Spillways; Devices for dissipation of energy, e.g. for reducing eddies also for lock or dry-dock gates
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
F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
F16F1/00—Springs
F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
F16F1/37—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers of foam-like material, i.e. microcellular material, e.g. sponge rubber
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
F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
F16L55/04—Devices damping pulsations or vibrations in fluids
Abstract
In nuclear power stations in particular, waste heat is given off in many cases to river or sea water. For this purpose water-bearing constructions (channels etc.) are necessary, through which the water flows to and from the nuclear power stations. In order to protect these constructions against pressure waves, which can occur for example when an explosion takes place underwater, a chamber (3) is provided in the channel with plates (5) which are arranged in parallel disposition with the path of the channel in said left chamber. These plates are coated on both sides with an elastic foam material (7), so that pressure waves are absorbed effectively in the chamber (3) (Fig. 1).
Description
SPECIFICATION
Arrangement for protecting a water-bearing construction against water pressure waves
The invention relates to an arrangement for protecting a water-bearing construction against water pressure waves propagating along a channel.
In nuclear power stations in particular, large water-bearing constructions, provided for carrying away the waste heat to water reservoir,
may be subject of an explosive impact or
underwater explosions may take place in them
because of an accident. The result of explosions of this kind-as the water is essentially imcompressible-are water pressure waves, which can damage the walls of the channel
and other structures disposed in the water
inside the nuclear power station.
According to the invention there is provided an arrangement for protecting a water (or
other liquid)-bearing construction against water pressure waves propagating along a chan
nel, wherein there is situated in the channel a
chamber in which several plates are situated
for the suppression of pressure waves, the
planes of the plates being arranged in parallel
disposition with the path of the channel in said chamber and the plates being covered with elastic foam material.
Preferably, the width of the chamber is
greater than the width of the channel. The
covering of elastic foam material may be cov
ered with a water-tight protective layer. To
enable the plates to be lifted upwardly for
inspection and/or replacement, the plates can
be supported by upright bars which enclose
the upright edges of the plates and serve as
guides for the plates. In one arrangement,
some of the plates are arranged in mutually
parallel, spaced apart, relationship while oth
ers of the plates at an outlet end of the
chamber are arranged in mutually inclined
relationship.
For a better understanding of the present
invention and to show how the same may be
carried into effect, reference will now be
made, by way of example, to the accompany
ing drawings in which:
Figure 1 is a longitudinal sectional view of
one form of protection arrangement against
water pressure waves propagating along a
channel,
Figure 2 is a plan view of the protection
arrangement, and
Figure 3 is a plan view on a large scale of
one of a number of plates used for pressure
suppression.
A chamber 3, the width of which is larger
than that of a channel 1, is situated in the
channel, filled with water, behind a rake 2.
Disposed in the chamber 3 are upright bars 4
which enclose the narrow upright edges of
vertical plates 5, several of which are disposed in mutually parallel, spaced apart, relationship while others (two plates 5) are arranged at the outlet end of the chamber in mutually inclined relationship. In both cases, the plates are arranged in parallel disposition with the path of the channel in the chamber.
As shown in Fig. 3, the plates 5 each consist of a carrier plate 6, which is coated on both sides with a layer of elastic foam material 7.
The exposed surface of each layer of elastic foam material is covered with a water-tight protective layer 8.
As shown in Fig. 1, a chamber 3 is open at the top, so that the individual plates can be lifted out upwards in the direction of the dotted arrow 9 from the bars 4, which then serve as guides, with the help of a crane while the plant is in operation and then be inspected and/or renewed.
The distance a separating two plates from one other is not much greater than the thickness of the layers of elastic foam material, which are situated on both sides of each substream 10 of the water. In this way, pressure waves, which are produced for example by an explosive charge 11 exploding on the rake 2 and which may be relatively large over a comparatively short stretch, and are suppressed effectively in chamber 3, so that only the short part of the water bearing channel 1 between the rake 2 and the chamber 3 needs to be constructed in such a manner that the walls can also endure large waves caused by an explosion.
1. An arrangement for protecting a water (or other liquid)-bearing construction against water pressure waves propagating along a channel, wherein there is situated in the channel a chamber in which several plates are situated for the suppression of pressure waves, the planes of the plates being arranged in parallel disposition with the path of the channel in said chamber and the plates being covered with elastic foam material.
2. A protective arrangement according to claim 1, wherein the width of the chamber is greater than the width of the channel.
3. A protective arrangement according to claim 1 or 2, wherein the covering of elastic foam material is covered with water-tight protective layer.
4. A protective arrangement according to claim 1, wherein the plates are supported by upright bars which enclose the upright edges of the plates and serve as guides to enable the plates to be lifted upwardly from the bars for inspection and/or replacement.
5. A protective arrangement according to any preceding claim, wherein some of the plates are arranged in mutually parallel, spaced apart relationship while others of the plates at an outlet end of the chamber are arranged in mutually inclined relationship.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (10)
**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Arrangement for protecting a water-bearing construction against water pressure waves The invention relates to an arrangement for protecting a water-bearing construction against water pressure waves propagating along a channel. In nuclear power stations in particular, large water-bearing constructions, provided for carrying away the waste heat to water reservoir, may be subject of an explosive impact or underwater explosions may take place in them because of an accident. The result of explosions of this kind-as the water is essentially imcompressible-are water pressure waves, which can damage the walls of the channel and other structures disposed in the water inside the nuclear power station. According to the invention there is provided an arrangement for protecting a water (or other liquid)-bearing construction against water pressure waves propagating along a chan nel, wherein there is situated in the channel a chamber in which several plates are situated for the suppression of pressure waves, the planes of the plates being arranged in parallel disposition with the path of the channel in said chamber and the plates being covered with elastic foam material. Preferably, the width of the chamber is greater than the width of the channel. The covering of elastic foam material may be cov ered with a water-tight protective layer. To enable the plates to be lifted upwardly for inspection and/or replacement, the plates can be supported by upright bars which enclose the upright edges of the plates and serve as guides for the plates. In one arrangement, some of the plates are arranged in mutually parallel, spaced apart, relationship while oth ers of the plates at an outlet end of the chamber are arranged in mutually inclined relationship. For a better understanding of the present invention and to show how the same may be carried into effect, reference will now be made, by way of example, to the accompany ing drawings in which: Figure 1 is a longitudinal sectional view of one form of protection arrangement against water pressure waves propagating along a channel, Figure 2 is a plan view of the protection arrangement, and Figure 3 is a plan view on a large scale of one of a number of plates used for pressure suppression. A chamber 3, the width of which is larger than that of a channel 1, is situated in the channel, filled with water, behind a rake 2. Disposed in the chamber 3 are upright bars 4 which enclose the narrow upright edges of vertical plates 5, several of which are disposed in mutually parallel, spaced apart, relationship while others (two plates 5) are arranged at the outlet end of the chamber in mutually inclined relationship. In both cases, the plates are arranged in parallel disposition with the path of the channel in the chamber. As shown in Fig. 3, the plates 5 each consist of a carrier plate 6, which is coated on both sides with a layer of elastic foam material 7. The exposed surface of each layer of elastic foam material is covered with a water-tight protective layer 8. As shown in Fig. 1, a chamber 3 is open at the top, so that the individual plates can be lifted out upwards in the direction of the dotted arrow 9 from the bars 4, which then serve as guides, with the help of a crane while the plant is in operation and then be inspected and/or renewed. The distance a separating two plates from one other is not much greater than the thickness of the layers of elastic foam material, which are situated on both sides of each substream 10 of the water. In this way, pressure waves, which are produced for example by an explosive charge 11 exploding on the rake 2 and which may be relatively large over a comparatively short stretch, and are suppressed effectively in chamber 3, so that only the short part of the water bearing channel 1 between the rake 2 and the chamber 3 needs to be constructed in such a manner that the walls can also endure large waves caused by an explosion. CLAIMS
1. An arrangement for protecting a water (or other liquid)-bearing construction against water pressure waves propagating along a channel, wherein there is situated in the channel a chamber in which several plates are situated for the suppression of pressure waves, the planes of the plates being arranged in parallel disposition with the path of the channel in said chamber and the plates being covered with elastic foam material.
2. A protective arrangement according to claim 1, wherein the width of the chamber is greater than the width of the channel.
3. A protective arrangement according to claim 1 or 2, wherein the covering of elastic foam material is covered with water-tight protective layer.
4. A protective arrangement according to claim 1, wherein the plates are supported by upright bars which enclose the upright edges of the plates and serve as guides to enable the plates to be lifted upwardly from the bars for inspection and/or replacement.
5. A protective arrangement according to any preceding claim, wherein some of the plates are arranged in mutually parallel, spaced apart relationship while others of the plates at an outlet end of the chamber are arranged in mutually inclined relationship.
6. An arrangement for protecting a waterbearing construction against water pressure waves propagating along a channel, substantially as hereinbefore described with reference to Figs. 1 to 3 of the accompanying drawings.
7. Protective device for water-bearing constructions against pressure waves, wherein a chamber is provided for the suppression of pressure in which several mutually parallel plates are situated, the planes of the plates are arranged parallel to the flow direction of the water, and the plates are coated with elastical foam material.
8. Protective device according to claim 7, wherein the width of the chamber is greater than the width of the water-bearing channel in the water-bearing construction.
9. Protective device according to claim 7 or 8, wherein the layer of elastical foam material is covered with a water-tight protective layer.
10. Protective device according to claim 7, 8 or 9 wherein the plates are guided in vertical bars which enclose the narrow sides of the plates.
GB7932258A
1978-09-18
1979-09-18
Arrangement for protecting a water bearing construction against water pressure waves
Expired
GB2031490B
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
DE19782840593
DE2840593C2
(en)
1978-09-18
1978-09-18
Protection device for water-bearing structures in nuclear power plants against pressure waves
Publications (2)
Publication Number
Publication Date
GB2031490A
true
GB2031490A
(en)
1980-04-23
GB2031490B
GB2031490B
(en)
1982-08-25
Family
ID=6049764
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB7932258A
Expired
GB2031490B
(en)
1978-09-18
1979-09-18
Arrangement for protecting a water bearing construction against water pressure waves
Country Status (7)
Country
Link
AR
(1)
AR232055A1
(en)
BR
(1)
BR7905930A
(en)
DE
(1)
DE2840593C2
(en)
ES
(1)
ES484212A1
(en)
FR
(1)
FR2436292A1
(en)
GB
(1)
GB2031490B
(en)
PT
(1)
PT70176A
(en)
Families Citing this family (4)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
DE3146523A1
(en)
*
1981-11-24
1983-06-01
Kraftwerk Union AG, 4330 Mülheim
Protection device for structures
DE3209386C2
(en)
*
1982-03-15
1986-07-31
Kraftwerk Union AG, 4330 Mülheim
Device for protecting water-carrying pipelines against pressure waves
FR2524029A1
(en)
*
1982-03-23
1983-09-30
Biesel Francis
PROTECTION OF WALLS IN CONTACT WITH LIQUIDS AGAINST QUICK PRESSURE FLUCTUATIONS
FR2590629B1
(en)
*
1985-11-25
1989-06-30
Alsthom
DEVICE FOR DISSIPATING THE ENERGY OF A LIQUID FLOW WITH A FREE SURFACE, DAM AND HYDRAULIC TEST LOOP USING THE SAME
Family Cites Families (9)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
DE424485C
(en)
*
1926-01-25
A Laeufer Dr Ing
Hydropower destroyer
CH104031A
(en)
*
1922-10-14
1924-03-17
Techn Projektierungs U Baubuer
Energy destroyer for flowing liquids.
FR942121A
(en)
*
1944-03-15
1949-01-31
Neyret Beylier & Piccard Picte
Collector channel of an installation for capturing the energy of the swell, in particular in the case of steep coasts
FR1384468A
(en)
*
1964-03-04
1965-01-04
Smith & Sons Ltd S
Hydraulic pressure filter
US3553749A
(en)
*
1968-01-17
1971-01-12
Harry Majeske
Impact cushion
FR1570498A
(en)
*
1968-01-31
1969-06-13
DE2649541A1
(en)
*
1975-11-10
1977-05-18
Varian Associates
DAMPER FOR HIGH PRESSURE PUMP SYSTEMS
DE2624548C2
(en)
*
1976-06-01
1977-10-27
Kraftwerk Union AG, 4330 Mülheim
Inlet structure for cooling water for cooling power plants
DE2747077A1
(en)
*
1977-10-20
1979-05-03
Alfred Dietz
Protective network for water supply to atomic power plants – consists of meshes of endless wire cable with electric wires for alarm circuits
1978
1978-09-18
DE
DE19782840593
patent/DE2840593C2/en
not_active
Expired
1979
1979-09-04
AR
AR27794879A
patent/AR232055A1/en
active
1979-09-10
FR
FR7922529A
patent/FR2436292A1/en
active
Granted
1979-09-14
PT
PT7017679A
patent/PT70176A/en
unknown
1979-09-17
BR
BR7905930A
patent/BR7905930A/en
unknown
1979-09-17
ES
ES484212A
patent/ES484212A1/en
not_active
Expired
1979-09-18
GB
GB7932258A
patent/GB2031490B/en
not_active
Expired
Also Published As
Publication number
Publication date
AR232055A1
(en)
1985-04-30
DE2840593C2
(en)
1982-09-09
BR7905930A
(en)
1980-05-20
PT70176A
(en)
1979-10-01
DE2840593A1
(en)
1980-04-17
GB2031490B
(en)
1982-08-25
FR2436292A1
(en)
1980-04-11
ES484212A1
(en)
1980-04-16
FR2436292B1
(en)
1983-05-20
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Legal Events
Date
Code
Title
Description
1994-05-18
PCNP
Patent ceased through non-payment of renewal fee
Effective date:
19930918
