U.S. patent application number 13/002856 was filed with the patent office on 2011-12-22 for leakage self-rescue container for stocking danagerous chemicals.
Invention is credited to Chuan Jin, Yuechun Jin, Junbo Zhang.
Application Number | 20110308976 13/002856 |
Document ID | / |
Family ID | 41506697 |
Filed Date | 2011-12-22 |
United States Patent
Application |
20110308976 |
Kind Code |
A1 |
Jin; Yuechun ; et
al. |
December 22, 2011 |
LEAKAGE SELF-RESCUE CONTAINER FOR STOCKING DANAGEROUS CHEMICALS
Abstract
A rescue device for treating leakage of dangerous chemical
includes g a first container having a closed negative pressure
chamber and an intake which allows outside dangerous chemicals to
enter the first container, and a second container installed and
fixed in the first container. The second container contains a
substantially harmless liquefied gas and has an opening which
controllably communicates with the external environment. When the
dangerous chemicals are leaking, the rescue device can be used to
reduce the loss of dangerous chemical, alleviate the harm to the
environment and human, and avoid the possible disastrous
consequences.
Inventors: |
Jin; Yuechun; (Beijing,
CN) ; Zhang; Junbo; (Beijing, CN) ; Jin;
Chuan; (Beijing, CN) |
Family ID: |
41506697 |
Appl. No.: |
13/002856 |
Filed: |
July 6, 2009 |
PCT Filed: |
July 6, 2009 |
PCT NO: |
PCT/CN2009/072635 |
371 Date: |
March 3, 2011 |
Current U.S.
Class: |
206/216 |
Current CPC
Class: |
B65D 90/50 20130101;
B65D 90/32 20130101 |
Class at
Publication: |
206/216 |
International
Class: |
B65D 77/00 20060101
B65D077/00 |
Foreign Application Data
Date |
Code |
Application Number |
Jul 7, 2008 |
CN |
200810130540.6 |
Claims
1. A leakage self-rescue container for stocking dangerous chemicals
comprising: a first container for stocking dangerous chemicals; and
a second container installed and fixed in the first container, the
second container contains a substantially harmless liquefied gas
and has an opening, which controllably communicates with the
external environment.
2. A leakage self-rescue container of claim 1, wherein the second
container is a rigid and pressure-resistant container.
3. A leakage self-rescue container of claim 1, wherein the second
container is cylindrical, a spherical or snakelike.
4. A leakage self-rescue container of claim 1, wherein the relative
position of the second container to the first container is that the
center of the second container is closed to the center of the first
container while the second container does not contact directly with
the first container.
5. A leakage self-rescue container of claim 1, wherein the
substantially harmless liquefied gas is liquid carbon dioxide.
6. A leakage self-rescue container of claim 1, wherein the opening
is a manual vent valve.
7. A leakage self-rescue container of claim 1, wherein the opening
is an automatic vent valve.
8. A leakage self-rescue container of claim 7, wherein the first
container has a leak detection device, when the leak detection
device detects the leakage of the dangerous chemicals, the
automatic vent valve is controlled to open automatically.
9. A leakage self-rescue container of claim 7, wherein the first
container has a temperature sensor, when the temperature sensor
detects that the ambient temperature is higher than the
predetermined temperature, the automatic vent valve is controlled
to open automatically.
10. A leakage self-rescue container of claim 2, wherein the second
container is one of a cylindrical, a spherical and a snakelike.
11. A leakage self-rescue container of claim 2, wherein the
relative position of the second container to the first container is
that the center of the second container is closed to the center of
the first container while the second container does not contact
directly with the first container.
12. A leakage self-rescue container of claim 10, wherein the
relative position of the second container to the first container is
that the center of the second container is closed to the center of
the first container while the second container does not contact
directly with the first container.
13. A leakage self-rescue container of claim 11, wherein the
opening is a manual vent valve.
14. A leakage self-rescue container of claim 12, wherein the
opening is a manual vent valve.
15. A leakage self-rescue container of claim 11, wherein the
opening is an automatic vent valve.
16. A leakage self-rescue container of claim 12, wherein the
opening is an automatic vent valve.
17. A leakage self-rescue container of claim 13, wherein the first
container has a leak detection device, when the leak detection
device detects the leakage of the dangerous chemicals, the
automatic vent valve is controlled to open automatically.
18. A leakage self-rescue container of claim 14, wherein the first
container has a leak detection device, when the leak detection
device detects the leakage of the dangerous chemicals, the
automatic vent valve is controlled to open automatically.
19. A leakage self-rescue container of claim 13, wherein the first
container has a temperature sensor, when the temperature sensor
detects that the ambient temperature is higher than the
predetermined temperature, the automatic vent valve is controlled
to open automatically.
20. A leakage self-rescue container of claim 14, wherein the first
container has a temperature sensor, when the temperature sensor
detects that the ambient temperature is higher than the
predetermined temperature, the automatic vent valve is controlled
to open automatically.
Description
TECHNICAL FIELD
[0001] The present invention relates to a container for stocking
dangerous chemicals, in particular, to a leakage self-rescue
container for stocking dangerous chemicals.
BACKGROUND ART
[0002] Chemicals are indispensable to the industrial production and
the people's living. Moreover, most of the chemicals are dangerous
chemicals, in which most of them are fluids including gasses and
liquids, especially liquids with low boiling points. During the
production, storage, transportation and use of dangerous chemicals,
leakage problems sometimes occur due to the aging of a container,
high temperature and accidents, which will lead to the harm to the
environment and even result in disastrous consequences. Prompt and
effective self-rescue will gain more valuable time for rescue and
therefore it will be more possible to reduce the harm and avoid the
disastrous consequences.
SUMMARY OF INVENTION
[0003] When fluid dangerous chemicals leak, it is key on how to
reduce the pressure of the storage container and increase the
viscosity of dangerous products in order to reduce the leakage
rate, decrease the total amount of leakage pollution, reduce
difficulty of rescue and gain more time for rescue.
[0004] The present invention relates to a leakage self-rescue
container for stocking dangerous chemicals comprising:
[0005] a first container for stocking dangerous chemicals; and
[0006] a second container installed and fixed in the first
container, the second container contains a substantially harmless
liquefied gas and has an opening, which controllably communicates
with the external environment.
[0007] Where the dangerous chemicals in the first container leak
due to accidents or the first container is threatened by high
temperature, the temperature in the first container decreases and
thereby the pressure in the first container reduces by releasing
the liquefied gas in the second container so as to avoid the
leakage or explosion of the first container caused by overpressure,
or to increase the viscosity of the dangerous chemicals to reduce
the leakage rate when the leakage occurs so that it can obtain
valuable time for more effective rescue.
[0008] The leakage self-rescue container of the present invention
can be used for stocking flammable, explosive, toxic, corrosive,
radioactive or chemical polluted dangerous chemicals, in particular
for stocking more dangerous gasses or fluids, especially dangerous
chemicals such as fluids with low boiling points and the like. The
dangerous chemicals include but are not limited to phosphorus
oxychloride, gasoline, bromine, liquid ammonia, liquid chlorine,
liquid hydrogen sulfide, hydrocyanic acid, methyl isocyanate,
ethylene oxide, natural gas, liquefied petroleum gas, alcohol,
chloroform, and the like.
[0009] The first container for stocking dangerous chemicals can be
selected based on the properties of chemical products stocked in
the container. Various conventional containers in the art for
stocking dangerous chemicals can be used. The leakage self-rescue
container of the present invention can be a separate container, and
can be a container loaded by any vehicle.
[0010] A second container is installed in the first container. The
second container contains a substantially harmless liquefied gas.
Where the dangerous chemicals in the first container leak due to
accidents or the first container is threatened by high temperature,
the liquefied gas can be released in the form of gas from the
second container by opening a vent valve on the second container.
The release of the liquefied gas absorbs the heat of the
surrounding environment (i.e. the first container) so that the
temperature of the container decreases and thereby the pressure in
the first container reduces so as to avoid the leakage or explosion
caused by overpressure, or to increase the viscosity of the
dangerous chemicals to reduce the leakage rate when the leakage
occurs and to obtain valuable time for more effective rescue.
[0011] The second container can be fixed in the first container
with a method well-known to one skilled in the art. Preferably, the
relative position of the second container to the first container is
that the center of the second container is closed to the center of
the first container while the second container does not directly
contact with the first container so that the second container
mainly exchanges the heat with the interior of the first container
but does not exchanges the heat with the external environment
through the walls of the first container.
[0012] The liquefied gas in the second container can be selected
from a gas, of which the critical temperature is above the ambient
temperature and which is substantially harmless to environment and
human. The liquefied gas is a gas under the air pressure at the
ambient temperature, but it is a liquid under pressure at the
ambient temperature. Where the leakage self-rescue container is not
used, the second container is under pressure and the gas is
maintained as a liquid. However, during usage, the second container
communicates with the outside and the liquefied gas is gasified and
absorbs the environmental heat. Preferably, the liquefied gas is
liquid carbon dioxide, which is readily available and
inexpensive.
[0013] The second container is a rigid and pressure-resistant
container, preferably a steel tank or cylinder. The second
container can be pressure-resistant in any shape such as
cylindrical, spherical, snakelike tube and the like.
[0014] The second container of the present invention has an
opening, which controllably communicates with the external
environment. The second container has one or more openings. In one
embodiment, the opening is a manual vent valve. In another
embodiment, the opening is an automatic vent valve. In another
embodiment, the second container has not only a manual vent valve
but an automatic vent valve.
[0015] In one embodiment, the first container also has a leak
detection device. Where the leak detection device detects the
leakage of the dangerous chemicals, the leakage signal is delivered
to a control system. The control system controls to open the
automatic vent valve automatically and sends out an alarm
signal.
[0016] In another embodiment, the first container also has a
temperature sensor. Where the temperature sensor detects that the
ambient temperature is higher than the predetermined temperature,
the abnormal temperature signal is delivered to a control system.
The control system controls to open the automatic vent valve
automatically and sends out an alarm signal.
[0017] When the liquefied gas of the present invention is selected
to be liquid carbon dioxide, a person skilled in the art knows how
to arrange the openings of the second container so as to prevent
dry ice formed during the gasification of liquid carbon dioxide
from blocking the openings.
[0018] The container of the present invention can be used as a
storage container for producing, stocking, transporting and using
liquid dangerous chemicals. It can reduce the security risks for
producing, stocking, transporting and using liquid dangerous
chemicals including more dangerous gasses and fluids, especially
dangerous chemical fluids with low boiling points.
BRIEF DESCRIPTION OF DRAWINGS
[0019] FIG. 1 is a schematic diagram of an embodiment of the
present invention.
[0020] FIG. 2 is a schematic diagram of another embodiment of the
present invention.
MODE OF CARRYING OUT INVENTION
[0021] The technical contents of the present invention are further
illustrated by the following preferred embodiments of the present
invention with reference to the drawings. It should be understood
that the contents as shown in the drawings are merely used to
illustrate the present invention rather than limiting the scope of
the present invention.
[0022] In each figure, the same component has the same number. For
example, the number of the first container is 101 in FIG. 1, the
number of the first container is 201 in FIG. 2, and so on.
[0023] FIG. 1 is a schematic diagram of an embodiment of the
present invention. A second container 103 is fixed in a first
container 101 for stocking dangerous chemicals 102 via supports
104. The second container 103 is cylindrical.
[0024] The second container 103 contains a liquefied gas 105. A
liquid-level sensor (not shown) can be installed in the second
container 103 to detect the amount of the liquefied gas 105 in the
second container 103 at any time and to complement the liquefied
gas 105 where needed.
[0025] The second container 103 has a vent valve 106, which
controllably communicates with the external environment. The second
container 103 may have one or more vent valves 106.
[0026] The liquefied gas 105 can be injected or complemented into
the second container 103 through the vent valve 106 or other feed
inlets (not shown).
[0027] When the first container 101 leaks due to an accident or is
threatened by high temperature, the vent valve 106 is opened to
release the liquefied gas 105 in the second container 103. During
the release, the liquefied gas 105 absorbs the heat of the
surrounding environment (i.e. the first container 101) so that the
temperature of the first container 101 decreases and thereby the
pressure in the first container 101 reduces so as to avoid the
leakage or explosion of the first container 101 caused by
overpressure, or to increase the viscosity of the dangerous
chemicals 102 to reduce the leakage rate when the leakage
occurs.
[0028] FIG. 2 is a schematic diagram of another embodiment of the
present invention. A snakelike tubular second container 203 is
fixed in a first container 201 for stocking dangerous chemicals
202. The second container 203 contains a liquefied gas 205.
[0029] The second container 203 has a vent valve 206, which
controllably communicates with the external environment, and a feed
inlet 207, through which the liquefied gas 205 are injected. The
second container 203 may have one or more vent valves 206 and one
or more feed inlets 207.
[0030] The first container 201 has a leak detection device or a
temperature sensor 208. When the leak detection device or the
temperature sensor 208 detects that the first container 201 leaks
or is threatened by high temperature, the detecting signal is
delivered to a control system 209. The control system 209 controls
to open or partly open the vent valve 206 to release the liquefied
gas 205 in the second container 203. During the release, the
liquefied gas 205 absorbs the heat of the surrounding environment
(i.e. the first container 201) so that the temperature of the first
container 201 decreases and thereby the pressure in the first
container 201 reduces so as to avoid the leakage or explosion of
the first container 201 caused by overpressure, or to increase the
viscosity of the dangerous chemicals 202 to reduce the leakage rate
when the leakage occurs.
* * * * *