CN217875327U - Emergency water injection device for liquefied petroleum gas storage tank - Google Patents
Emergency water injection device for liquefied petroleum gas storage tank Download PDFInfo
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- CN217875327U CN217875327U CN202221791393.9U CN202221791393U CN217875327U CN 217875327 U CN217875327 U CN 217875327U CN 202221791393 U CN202221791393 U CN 202221791393U CN 217875327 U CN217875327 U CN 217875327U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
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Abstract
The utility model relates to the field of storage tanks, and discloses an emergency water injection device for a liquefied petroleum gas storage tank, wherein the bottom of the storage tank is connected with a return pipeline and a blow-off pipe; the emergency water injection device comprises a high-pressure water pump and a high-pressure water pipe; the return pipeline comprises a return header pipe and a plurality of return branch pipes; one end of each backflow branch pipe is connected to the bottom of each storage tank, the other end of each backflow branch pipe is communicated with the backflow header pipe, and a backflow branch valve and a first one-way valve are arranged on each backflow branch pipe; the return main pipe is also communicated with one end of the high-pressure water pipe, and a normally closed water injection valve is arranged between the return main pipe and the high-pressure water pipe; the water inlet end of the high-pressure water pump is communicated with a water source, and the water outlet end of the high-pressure water pump is communicated with the other end of the high-pressure water pipe; the high-pressure water pipe is provided with a second one-way valve. The utility model provides an emergent water injection device can utilize the original back flow path of storage tank to arbitrary one storage tank or simultaneously to the quick water injection of a plurality of storage tanks, need not to destroy the structure originally of storage tank bottom pipeline.
Description
Technical Field
The utility model relates to a storage tank field, concretely relates to emergent water injection device of liquefied petroleum gas storage tank.
Background
At present, a gas company sets a storage station according to a district, the storage station is provided with a plurality of large storage tanks for storing liquefied petroleum gas, and the bottom of each storage tank is connected with a liquid outlet pipe, a liquid inlet pipe, a return pipe, a gas phase pipe and a blow-off pipe through flanges. Due to manual assembly or flange sealing failure and the like, the flange connecting pipe at the bottom of the storage tank may leak gas, and emergency measures must be taken in time to seal the gas leaking position so as to prevent the leaked liquefied petroleum gas from causing explosion and causing serious casualty accidents.
The emergency measure of taking at present generally is that the bottom at every storage tank all additionally is connected with the inlet channel, so, when the storage tank takes place to leak, in the storage tank of leaking is injected water into through the inlet channel that corresponds, because the density of water is greater than liquefied petroleum gas's density, then the water of injecting into in the storage tank is located the bottom in the storage tank all the time, thereby carry out the water shutoff to the gas leakage department of storage tank, so that reduce liquefied petroleum gas's leakage quantity, the big safety risk that brings of leakage quantity is leaked in the prevention and cure, win the time for emergent rescue work. However, the original structure of the pipeline at the bottom of the storage tank needs to be damaged, and the water inlet pipeline can be attached to the pipeline, so that the construction difficulty and the air leakage possibility are greatly increased; and every storage tank all corresponds a supporting water inlet pipe, leads to holistic pipeline distribution very complicated, and each water inlet pipe mutual independence, and the quick water injection of a plurality of water inlet pipe of uncontrollable is to the storage tank that corresponds simultaneously.
In summary, there is a need for an emergency water filling device for a liquefied petroleum gas storage tank to solve the above problems.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model provides an emergent water injection device of liquefied petroleum gas storage tank can utilize the original back flow path of storage tank to arbitrary one storage tank or simultaneously to the quick water injection of a plurality of storage tanks, need not to destroy the structure originally of storage tank bottom pipeline.
(II) technical scheme
In order to solve the technical problem, the utility model provides a following technical scheme: an emergency water injection device for a liquefied petroleum gas storage tank is characterized in that the bottom of the storage tank is connected with a return pipeline and a blow-off pipe; the emergency water injection device comprises a high-pressure water pump and a high-pressure water pipe;
the return pipeline comprises a return header pipe and a plurality of return branch pipes; one end of each backflow branch pipe is connected to the bottom of each storage tank, the other end of each backflow branch pipe is communicated with the backflow main pipe, and a backflow branch valve used for controlling the on-off of the backflow branch pipes and a first one-way valve used for limiting the flow direction of the liquefied petroleum gas are arranged on each backflow branch pipe; the reflux main pipe is also communicated with one end of the high-pressure water pipe, and a normally closed water injection valve is arranged between the reflux main pipe and the high-pressure water pipe for controlling the on-off of the reflux main pipe and the high-pressure water pipe;
the water inlet end of the high-pressure water pump is communicated with a water source, and the water outlet end of the high-pressure water pump is communicated with the other end of the high-pressure water pipe, so that the water pressure is improved, and high-pressure water is pumped into the high-pressure water pipe;
and a second one-way valve is arranged on the high-pressure water pipe and used for limiting the water in the high-pressure water pipe to flow towards the return pipeline in a one-way mode.
Further setting, the high-pressure water pipe is provided with a pressure gauge for checking the water pressure in the pipe.
So set up, can look over the water pressure value in the high pressure water pipe through the manometer to control high pressure water pump and adjust water pressure, can avoid water pressure to hang down, lead to the water injection speed slow, can avoid water pressure too high again, lead to high pressure water pipe explosion to damage.
And further setting, control valves are arranged at the water inlet end and the water outlet end of the high-pressure water pump so as to control the connection and disconnection of the high-pressure water pump, a water source and a high-pressure water pipe.
So set up, can control the break-make of high pressure water pump and water source and high pressure water pipe through the control valve to change maintenance high pressure water pump or high pressure water pipe.
(III) advantageous effects
Compared with the prior art, the utility model provides a pair of emergent water injection device of liquefied petroleum gas storage tank possesses following beneficial effect:
1. when the storage tank is used daily, the high-pressure water pump and the water injection valve are normally closed, and the emergency water injection device is in a closed state;
when any one or more storage tanks are leaked, the emergency water injection device can be controlled to be in a starting state only by opening the high-pressure water pump, the water injection valve and the plurality of backflow branch valves corresponding to the leaked storage tanks, at the moment, the high-pressure water pump improves the water pressure and pumps the high-pressure water into the high-pressure water pipe, and the high-pressure water is quickly jacked into the leaked storage tank or the storage tanks through the high-pressure water pipe and the backflow pipeline in sequence to play a role in stopping leakage; after plugging is finished, the water supply can be immediately stopped to fill water into the storage tank only by closing the high-pressure water pump and the water filling valve, and meanwhile, the backflow branch valve is closed to avoid water from being filled into the backflow pipeline; after the storage tank is maintained, water in the storage tank can be discharged through the drain pipe.
Because the backflow branch pipes are mutually communicated through the backflow header pipe so as to be communicated with the storage tanks, the emergency water injection device provided by the utility model can utilize the original backflow pipeline of the storage tanks, only needs to be provided with one emergency water injection device, can quickly inject water into any one storage tank or a plurality of storage tanks simultaneously, can also utilize the original blow-off pipe to finish drainage, is very convenient, does not need to destroy the original structure of the pipeline at the bottom of the storage tank, and reduces the difficulty of construction and the possibility of air leakage;
2. the emergency water injection device can quickly push water into the storage tank through the high-pressure water pump, quickly plug the air leakage part of the storage tank, effectively accelerate water injection time, achieve the effect of emergency water injection, and win time for emergency rescue;
3. the emergency water injection device can limit the liquefied petroleum gas to flow from the return main pipe to the return branch pipe in a single direction through the first check valve, and can prevent the liquefied petroleum gas from entering the high-pressure water pipe to cause gas leakage accidents through the water injection valve and the second check valve;
4. the emergency water injection device can also limit water from reversely impacting the high-pressure water pump through the high-pressure water pipe through the second one-way valve so as to prevent the high-pressure water pump from being damaged;
5. this emergent water injection device has only increased high-pressure water pipe and high-pressure water pump and has supplied water for return line, does not increase other takeovers, and the pipeline is simple, and convenient the arranging is more pleasing to the eye.
Drawings
Fig. 1 is a schematic connection diagram of the emergency water filling device for a liquefied petroleum gas storage tank of the present invention.
Reference numbers: 1. a high pressure water pipe; 11. a second check valve; 12. a pressure gauge; 2. a high pressure water pump; 21. a control valve; 3. a storage tank; 31. a liquid outlet pipe; 311. a liquid outlet valve; 321. a return header pipe; 3211. a water injection valve; 322. a return branch pipe; 3221. a return branch valve; 3222. a first check valve; 33. a blow-off pipe; 331. a blowdown valve; 4. a water source.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1, the emergency water injection device for the liquefied petroleum gas storage tank can utilize the original return line of the storage tank 3 to inject water into the storage tank, so as to rapidly plug the air leakage position of the storage tank 3.
The emergency water filling device for the liquefied petroleum gas storage tank comprises a high-pressure water pipe 1 and a high-pressure water pump 2.
The bottom of the storage tank 3 is connected with a liquid outlet pipe 31, a liquid inlet pipe, a return pipeline, a gas phase pipe and a sewage discharge pipe 33;
one end of the liquid outlet pipe 31 close to the storage tank 3 is provided with a liquid outlet valve 311 for controlling the on-off of the liquid outlet pipe 31 and the storage tank 3 so as to control whether the liquefied petroleum gas in the storage tank 3 is output or not.
The return line includes a return manifold 321 and a plurality of return legs 322; one end of each return branch pipe 322 is connected to the bottom of each storage tank 3, and the other end is communicated with the return header pipe 321, so that the return branch pipes 322 are communicated with each other through the return header pipe 321; a return branch valve 3221 for controlling the on-off of the return branch 322 is installed at one end of the return branch 322 close to the storage tank 3, and a first check valve 3222 for limiting the flow direction of the liquefied petroleum gas is installed at the other end.
A drain valve 331 is installed at one end of the drain pipe 33 near the storage tank 3 for controlling the drainage of the sewage in the storage tank 3.
The return main pipe 321 is also communicated with one end of the high-pressure water pipe 1, and a normally closed water injection valve 3211 is arranged between the high-pressure water pipe 1 and the return main pipe 321 to control the on-off of the high-pressure water pipe and the return main pipe 321;
the high-pressure water pipe 1 is provided with a second check valve 11, the second check valve 11 is positioned at one end of the high-pressure water pipe 1 close to the return main pipe 321, and is used for limiting water in the high-pressure water pipe 1 to flow towards the return main pipe 321 in a one-way manner and preventing liquefied petroleum gas from flowing backwards into the high-pressure water pipe 1;
the water inlet end of the high-pressure water pump 2 is communicated with a water source 4, the water outlet end of the high-pressure water pump is communicated with the other end of the high-pressure water pipe 1, the high-pressure water pump is used for improving the water pressure, and high-pressure water (the pressure can reach 1.5 MPa) is pumped into the high-pressure water pipe 1. Control valves 21 are respectively arranged between the water inlet end of the high-pressure water pump 2 and the water source 4 and between the water outlet end of the high-pressure water pump 2 and the high-pressure water pipe 1 so as to control the connection and disconnection of the high-pressure water pump 2, the water source 4 and the high-pressure water pipe 1; thus, when the high pressure water pump 2 or the high pressure water pipe 1 needs to be repaired and replaced, the corresponding control valve 21 is only required to be closed.
The high-pressure water pipe 1 is also provided with a pressure gauge 12 for checking the water pressure in the pipe, and the pressure gauge 12 is positioned at one end of the high-pressure water pipe 1 close to the high-pressure water pump 2.
In a specific embodiment, as shown in fig. 1, the utility model discloses an example with emergent water injection device of liquefied petroleum gas storage tank, it mainly includes: a high-pressure water pipe 1 and a high-pressure water pump 2.
During actual assembly and use: (1) The bottom of each storage tank 3 is connected with a liquid outlet pipe 31, a backflow branch pipe 322 and a sewage discharge pipe 33; one end of the liquid outlet pipe 31 close to the storage tank 3 is provided with a liquid outlet valve 311; one end of each return branch pipe 322 close to the storage tank 3 is provided with a return branch valve 3221, the other end is provided with a first one-way valve 3222, and the tail end of each return branch pipe 322 is connected with the return header pipe 321; a drain valve 331 is arranged at one end of the drain pipe 33 close to the storage tank 3;
(2) The reflux main pipe 321 is also connected with one end of the high-pressure water pipe 1, and a water injection valve 3211 is arranged at the connection position; the other end of the high-pressure water pipe 1 is communicated with the water outlet end of the high-pressure water pump 2; a second one-way valve 11 and a pressure gauge 12 are arranged on the high-pressure water pipe 1;
(3) The water inlet end of the high-pressure water pump 2 is connected with a water source 4; and control valves 21 are respectively arranged between the water inlet end of the high-pressure water pump 2 and the water source 4 and between the water outlet end of the high-pressure water pump 2 and the high-pressure water pipe 1.
The working principle in actual use is as follows:
the storage and distribution station is provided with a plurality of storage tanks 3 such as a storage tank 3a, a storage tank 3b, a storage tank 3c \8230, a storage tank 3n and the like 3, when the storage tanks 3 are used daily, the high-pressure water pump 2 and the water injection valve 3211 are normally closed, and the emergency water injection device is in a closed state;
when any one or more storage tanks 33 (such as the storage tank 3 a) leak, the high-pressure water pump 2, the water injection valve 3211 and the return branch valve 3221 of the storage tank 3a are opened, as shown in fig. 1 (an arrow in the figure is a conveying direction of water), the high-pressure water pump 2 increases the water pressure, and high-pressure water sequentially passes through the high-pressure water pipe 1, the return main pipe 321 and the return branch pipe 322 of the storage tank 3a, and is quickly pushed into the leaking storage tank 3a, so that the leaking part of the storage tank 3a is blocked, time is won for emergency rescue, and maintenance personnel can maintain the storage tank 3 a; after the air leakage part of the storage tank 3a is blocked, the high-pressure water pump 2 and the water injection valve 3211 are closed, water injection is stopped, water resources are saved, and meanwhile, the backflow branch valve 3221 of the storage tank 3a is closed, so that water is prevented from being injected into a backflow pipeline; after the storage tank 3a is maintained, the drain valve 331 is opened, the water in the storage tank 3a is automatically drained downwards through the drain pipe 33, and after the drainage is finished, the drain valve 331 is closed.
The utility model provides an emergent water injection device of liquefied petroleum gas storage tank can utilize the original return line of storage tank 3, only need set up an emergent water injection device, can be to arbitrary one storage tank 3 or to a plurality of storage tanks 3 fast water injection simultaneously, the gas leakage department of quick shutoff storage tank 3 wins the time for the emergency rescue; the original sewage discharge pipe 33 can be used for completing the drainage, the convenience is realized, the original structure of the storage tank 3 is not required to be damaged, and the construction difficulty and the possibility of air leakage at the bottom of the storage tank 3 are greatly reduced;
only the high-pressure water pipe 1 and the high-pressure water pump 2 are added to supply water for the return pipeline, other connecting pipes are not added, and the pipeline is simple, convenient to arrange and more attractive;
the emergency water injection device can control water pressure through the cooperation of the high-pressure water pump 2 and the pressure gauge 12, and rapidly pushes water into the storage tank 3 on the premise of not damaging the high-pressure water pipe 1, so that the water injection time is effectively shortened, the emergency plugging effect is realized, and the time is won for emergency rescue;
the emergency water filling device can limit the liquefied petroleum gas to flow from the return main pipe to the return branch pipe in a single direction through the first check valve 3222 so as to facilitate daily backflow use; and the liquefied petroleum gas can be prevented from entering the high-pressure water pipe 1 through the water injection valve 3211 and the second check valve 11, so that a gas leakage accident is caused; the second check valve 11 also prevents water from impacting the high-pressure water pump 2 through the high-pressure water pipe 1 in a reverse direction, so that the high-pressure water pump 2 is prevented from being damaged.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. An emergency water injection device for a liquefied petroleum gas storage tank is characterized in that the bottom of the storage tank is connected with a return pipeline and a blow-off pipe; the emergency water injection device is characterized by comprising a high-pressure water pump and a high-pressure water pipe;
the return pipeline comprises a return main pipe and a plurality of return branch pipes; one end of each backflow branch pipe is connected to the bottom of each storage tank, the other end of each backflow branch pipe is communicated with the backflow main pipe, and a backflow branch valve used for controlling the on-off of the backflow branch pipes and a first one-way valve used for limiting the flow direction of the liquefied petroleum gas are arranged on each backflow branch pipe; the reflux main pipe is also communicated with one end of the high-pressure water pipe, and a normally closed water injection valve is arranged between the reflux main pipe and the high-pressure water pipe for controlling the on-off of the reflux main pipe and the high-pressure water pipe;
the water inlet end of the high-pressure water pump is communicated with a water source, and the water outlet end of the high-pressure water pump is communicated with the other end of the high-pressure water pipe, so that the water pressure is improved, and high-pressure water is pumped into the high-pressure water pipe;
and a second one-way valve is arranged on the high-pressure water pipe and used for limiting the water in the high-pressure water pipe to flow towards the return pipeline in a one-way mode.
2. The emergency water filling device for liquefied petroleum gas storage tank as claimed in claim 1, wherein the high pressure water pipe is provided with a pressure gauge for checking the water pressure in the pipe.
3. The emergency water injection device for the liquefied petroleum gas storage tank as claimed in claim 1 or 2, wherein the high pressure water pump is provided with control valves at the water inlet end and the water outlet end to control the connection and disconnection of the high pressure water pump with a water source and a high pressure water pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221791393.9U CN217875327U (en) | 2022-07-12 | 2022-07-12 | Emergency water injection device for liquefied petroleum gas storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221791393.9U CN217875327U (en) | 2022-07-12 | 2022-07-12 | Emergency water injection device for liquefied petroleum gas storage tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217875327U true CN217875327U (en) | 2022-11-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221791393.9U Active CN217875327U (en) | 2022-07-12 | 2022-07-12 | Emergency water injection device for liquefied petroleum gas storage tank |
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| CN (1) | CN217875327U (en) |
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2022
- 2022-07-12 CN CN202221791393.9U patent/CN217875327U/en active Active
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