CN205445661U - Liquid nitrogen pressure boost fire extinction/protection system - Google Patents
Liquid nitrogen pressure boost fire extinction/protection system Download PDFInfo
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- CN205445661U CN205445661U CN201521103786.6U CN201521103786U CN205445661U CN 205445661 U CN205445661 U CN 205445661U CN 201521103786 U CN201521103786 U CN 201521103786U CN 205445661 U CN205445661 U CN 205445661U
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- liquid nitrogen
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- nitrogen
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Abstract
The utility model discloses a liquid nitrogen pressure boost fire extinction/protection system, including liquid nitrogen container, liquid nitrogen vaporizer and the buffer tank that connects gradually, liquid nitrogen container is last to be provided with relief valve, first manometer and to be used for directly annotating the pipe with the liquid nitrogen that the liquid nitrogen filled in the pit, be connected through liquid nitrogen main conveying pipe between liquid nitrogen container and the liquid nitrogen vaporizer, be connected with on the buffer tank and be used for filling gas injection nitrogen pipe in the pit with gas nitrogen, wherein, be connected with between liquid nitrogen main conveying pipe and the liquid nitrogen container be used for to the supercharging device of pressure boost in the liquid nitrogen container. The beneficial effect of the utility model: through setting up supercharging device and relief valve, when atmospheric pressure in liquid nitrogen container is less than the default, through the supercharging device pressurization, when atmospheric pressure in liquid nitrogen container is higher than the default, through the relief valve pressure release to realize the steady voltage output of liquid nitrogen, through the pressure oscillation that sets up buffer tank cushion gas nitrogen, thereby exported the fire extinction/protection stable performance of steady gas nitrogen, this system.
Description
Technical field
This utility model relates to Coal Mine Fire fire-fighting technique field, particularly relates to liquid nitrogen supercharging fireproof fire-extinguishing system.
Background technology
Continuous intensification along with coal mining depth, temperature under mine is more and more higher, possibly even reach to meet the temperature of coal oxidation condition, high temperature not only causes work under bad environment under mine, have a strong impact on underground work, and likely cause mine the most on fire, therefore underground thermal pollution and fire disaster are problem demanding prompt solutions.
At present mine generally use the gentle nitrogen of liquid nitrogen to carry out fireproof fire-extinguishing, but existing liquid nitrogen gentle nitrogen fire extinguishing system cannot the stable liquid nitrogen of output pressure, and the gas nitrogen pressure fluctuation exported is relatively big, so can cause the job insecurity of fireproof fire-extinguishing system, and the reliability of fireproof fire-extinguishing system is low.
Utility model content
This utility model aims to overcome that defect of the prior art, it is provided that a kind of liquid nitrogen supercharging fireproof fire-extinguishing system.
This utility model provides a kind of liquid nitrogen supercharging fireproof fire-extinguishing system, including the liquid nitrogen container being sequentially connected with, liquid nitrogen vaporizer and surge tank；
It is provided with relief valve, the first Pressure gauge on described liquid nitrogen container and directly notes pipe for liquid nitrogen being filled into the liquid nitrogen of down-hole；
It is connected by liquid nitrogen conveying supervisor between described liquid nitrogen container with described liquid nitrogen vaporizer；
Connect on described surge tank and have the note gas nitrogen pipe for gas nitrogen being filled into down-hole；
Wherein, described liquid nitrogen conveying supervisor has for the pressurizer of supercharging in described liquid nitrogen container with being connected between described liquid nitrogen container.
Further, there is in described pressurizer driving air inlet and the compressed air inlet of the gas nitrogen being transformed by liquid nitrogen in absorbing described liquid nitrogen conveying supervisor, described pressurizer also has the gas nitrogen for being absorbed by described compressed air inlet and supplies to described liquid nitrogen container to increase the supercharging gas outlet of the air pressure in described liquid nitrogen container；
Described driving air inlet and described compressed air inlet are connected with described liquid nitrogen conveying supervisor respectively, and described supercharging gas outlet is connected with described liquid nitrogen container.
Further, the auxiliary thermal of electricity being provided around for being responsible for heat supply to the conveying of described liquid nitrogen of described liquid nitrogen conveying supervisor.
Further, it is provided with pressure-regulating valve at the described supercharging gas outlet of described pressurizer.
Further, it is provided with check valve between described surge tank and described liquid nitrogen vaporizer, is provided with the second control valve between described surge tank and described note gas nitrogen pipe, described surge tank is provided with the second Pressure gauge.
Further, described surge tank is gasbag-type surge tank.
Further, described liquid nitrogen container is provided with quick fill adapter.
The beneficial effects of the utility model: by arranging pressurizer and relief valve, when the air pressure in liquid nitrogen container is less than preset value, pressurizeed by pressurizer, when the air pressure in liquid nitrogen container is higher than preset value, by relief valve pressure release, it is achieved thereby that the voltage stabilizing output of liquid nitrogen, by arranging the pressure oscillation of surge tank cushion gas nitrogen, thus export stable gas nitrogen, the fireproof fire-extinguishing stable performance of native system.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment will be briefly described below, apparently, accompanying drawing in describing below is only embodiments more of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of liquid nitrogen supercharging fireproof fire-extinguishing system of the present utility model.
In figure:
1, liquid nitrogen container；2, quick fill adapter；31, pressure-control valve；32, the first control valve；33, switch；34, check valve；35, the second control valve；36, the 3rd control valve；4, pressurizer；5, liquid nitrogen conveying supervisor；6, electric auxiliary thermal；7, liquid nitrogen vaporizer；8, surge tank；9, relief valve 9；101, liquid nitrogen directly notes pipe；102, note gas nitrogen pipe；111, the first Pressure gauge；112, the second Pressure gauge.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment; technical scheme in this utility model embodiment is clearly and completely described; obviously; described embodiment is only a part of embodiment of the present utility model; conceive based on the utility model in this utility model; the every other embodiment that those of ordinary skill in the art are obtained, broadly falls into the scope of this utility model protection.
As it is shown in figure 1, the liquid nitrogen supercharging fireproof fire-extinguishing system that this utility model one embodiment provides, including the liquid nitrogen container 1 being sequentially connected with, liquid nitrogen vaporizer 7 and surge tank 8.It is provided with relief valve the 9, first Pressure gauge 111 on liquid nitrogen container 1 and directly notes pipe 101 for liquid nitrogen being filled into the liquid nitrogen of down-hole；It is connected by liquid nitrogen conveying supervisor 5 between liquid nitrogen container 1 with liquid nitrogen vaporizer 7；Connect on surge tank 8 and have the note gas nitrogen pipe 102 for gas nitrogen being filled into down-hole；Wherein, liquid nitrogen conveying is responsible between 5 and liquid nitrogen container 1 to be connected the pressurizer 4 for supercharging in liquid nitrogen container 1.
Pressurizer 4 can carry out supercharging to liquid nitrogen container 1, and relief valve 9 can make liquid nitrogen container 1 pressure release.Specifically, when the air pressure of the liquid nitrogen container 1 that the first Pressure gauge 111 measures is less than preset value, by pressurizer 4, liquid nitrogen container 1 is pressurizeed；When the air pressure of the liquid nitrogen container 1 that the first Pressure gauge 111 measures is higher than preset value, open the safety-valve 8 pressure releases, thus liquid nitrogen container 1 can export the liquid nitrogen of voltage stabilizing.Surge tank 8 can buffer the pressure oscillation of the gas nitrogen from liquid nitrogen vaporizer 7 to a certain extent, thus exports stable gas nitrogen.Therefore, the fireproof fire-extinguishing stable performance of native system.
In the exemplary embodiment, pressurizer 4 is air boost pump.There is in pressurizer 4 driving air inlet and the compressed air inlet of the gas nitrogen being transformed by liquid nitrogen in absorbing liquid nitrogen conveying supervisor 5, pressurizer 4 also has the gas nitrogen for being absorbed by compressed air inlet and supplies to liquid nitrogen container 1 to increase the supercharging gas outlet of the air pressure in liquid nitrogen container 1.Driving air inlet and compressed air inlet to be connected with liquid nitrogen conveying supervisor 5 respectively, supercharging gas outlet is connected with liquid nitrogen container 1.
Liquid nitrogen in liquid nitrogen conveying supervisor 5 can part vaporize due to ambient temperature in transportation, pressurizer 4 utilizes and is come the driving source of the gas as pressurizer 4 and pressurising medium by the gas nitrogen of liquid nitrogen part vaporization, without introducing extra source of the gas, therefore optimize the layout of system.
Air inlet and compressed air inlet is driven all to be connected with liquid nitrogen conveying supervisor 5 by the first control valve 32, when the air pressure of the liquid nitrogen container 1 that the first Pressure gauge 111 measures is less than preset value, open the first control valve 32, the gas nitrogen being transformed by liquid nitrogen in liquid nitrogen conveying supervisor 5 is transported in pressurizer 4, wherein by driving the part gas nitrogen of air inlet as driving source of the gas to be used for driving pressurizer 4 to operate.In pressurizer 4, compressed supercharging as pressurising medium by the part of compressed air inlet, then flow to liquid nitrogen container 1 by supercharging gas outlet, liquid nitrogen container 1 is carried out supercharging.Pressurizer 4 in operating can enter the gas nitrogen of pressurizer 4 and be compressed and supercharging compressed air inlet.In native system, the pressure in liquid nitrogen container 1 can be increased 20-40 times, by liquid nitrogen container Stress control in the range of 1-2MPa by pressurizer 4.
In a preferred embodiment, the auxiliary thermal of electricity 6 being provided around for being responsible for 5 heat supplies to liquid nitrogen conveying of liquid nitrogen conveying supervisor 5.The auxiliary thermal 6 of electricity is provided with switch 33, switch 33 is opened when ambient temperature is too low, the auxiliary thermal 6 of electricity is to liquid nitrogen conveying supervisor's 5 heat supplies, to prevent liquid nitrogen conveying supervisor's 5 bursting by freezing, and to liquid nitrogen conveying supervisor 5 offer, liquid nitrogen is changed into the exchanged heat of gas nitrogen, with the gas nitrogen providing pressurizer 4 normally to work required.
It is provided with pressure-regulating valve 31 at the supercharging gas outlet of pressurizer 4.Pressure-regulating valve 31 can control the pressure of the gas nitrogen carried in liquid nitrogen container 1 by pressurizer 4.
It is provided with check valve 34 between surge tank 8 and liquid nitrogen vaporizer 7, is provided with the second control valve 35 between surge tank 8 and note gas nitrogen pipe 102, surge tank 8 is provided with the second Pressure gauge 112.Open check valve 34 when the pressure that the second Pressure gauge 112 records is less than preset value, close the second control valve 35, along with gas nitrogen is constantly delivered to surge tank 8 from liquid nitrogen vaporizer, air pressure in surge tank 8 gradually rises, check valve 34 is closed when reaching pressure higher than preset value, open the second control valve 35, regulate the pressure of gas nitrogen, the gas nitrogen that output pressure is more stable the most further.Preferably, surge tank 8 is gasbag-type surge tank.
Liquid nitrogen container 1 is provided with quick fill adapter 2.Utilize quick fill adapter 2 liquid nitrogen container 1 to be quickly connected with the liquid nitrogen tank car storing liquid nitrogen, the liquid nitrogen in liquid nitrogen tank car is quickly filled in liquid nitrogen container 1.
The job step of liquid nitrogen supercharging fireproof fire-extinguishing system of the present utility model is: step 1): utilizing the pressurizer 4 being arranged between liquid nitrogen container 1 and liquid nitrogen conveying supervisor 5 and be arranged on the relief valve 9 at top and first Pressure gauge 111 of liquid nitrogen container 1, the liquid nitrogen pressure in regulation liquid nitrogen container 1 keeps it in predetermined value；Step 2): the voltage stabilizing liquid nitrogen obtained by step 1 is directly noted pipe 101 by liquid nitrogen and is filled into down-hole；Step 3): being transported in liquid nitrogen vaporizer 7 by liquid nitrogen conveying supervisor 5 by the voltage stabilizing liquid nitrogen obtained by step 1, liquid nitrogen vaporizer 7 is transported to surge tank 8 after liquid nitrogen vaporization is become gas nitrogen, then by note gas nitrogen pipe 102, gas nitrogen is filled into down-hole.
Liquid nitrogen pressure in above-mentioned regulation liquid nitrogen container 1 keeps it in predetermined value and includes: when the force value of described liquid nitrogen container 1 is higher than preset value, opening the safety-valve 9 makes liquid nitrogen container 1 reduce pressure；When the force value of described liquid nitrogen container 1 is less than preset value, opening the driving air inlet in pressurizer 4 and compressed air inlet, the gas nitrogen being transformed by liquid nitrogen in described liquid nitrogen conveying supervisor 5 enters in described pressurizer 4 through described driving air inlet and described compressed air inlet；Wherein, through drive air inlet enter gas nitrogen as drive source of the gas drive pressurizer 4 operate, compressed air inlet enter gas nitrogen as pressurising medium, and by compression supercharging after in supercharging gas outlet is delivered to described liquid nitrogen container 1.
The foregoing is only preferred embodiment of the present utility model; not in order to limit this utility model; all within spirit of the present utility model and principle, any modification, equivalent substitution and improvement etc. made, within should be included in protection domain of the present utility model.
Claims (7)
1. a liquid nitrogen supercharging fireproof fire-extinguishing system, it is characterised in that: include liquid nitrogen container (1), liquid nitrogen vaporizer (7) and the surge tank (8) being sequentially connected with；
It is provided with relief valve (9), the first Pressure gauge (111) on described liquid nitrogen container (1) and directly notes pipe (101) for liquid nitrogen being filled into the liquid nitrogen of down-hole；
It is connected by liquid nitrogen conveying supervisor (5) between described liquid nitrogen container (1) with described liquid nitrogen vaporizer (7)；
There is the note gas nitrogen pipe (102) for gas nitrogen is filled into down-hole described surge tank (8) upper connection；
Wherein, the conveying of described liquid nitrogen is responsible between (5) and described liquid nitrogen container (1) to be connected the pressurizer (4) for supercharging in described liquid nitrogen container (1).
Liquid nitrogen supercharging fireproof fire-extinguishing system the most according to claim 1, it is characterized in that: there is in described pressurizer (4) driving air inlet and the compressed air inlet of the gas nitrogen being transformed by liquid nitrogen in absorbing described liquid nitrogen conveying supervisor (5) also there is in described pressurizer (4) the gas nitrogen for being absorbed by described compressed air inlet and supply to described liquid nitrogen container (1) to increase the supercharging gas outlet of the air pressure in described liquid nitrogen container (1)；
Described driving air inlet and described compressed air inlet are connected with described liquid nitrogen conveying supervisor (5) respectively, and described supercharging gas outlet is connected with described liquid nitrogen container (1).
Liquid nitrogen supercharging fireproof fire-extinguishing system the most according to claim 2, it is characterised in that: being provided around for the auxiliary thermal of the electricity (6) to conveying supervisor's (5) heat supply of described liquid nitrogen of described liquid nitrogen conveying supervisor (5).
4. according to the liquid nitrogen supercharging fireproof fire-extinguishing system described in any one of claim 1-3, it is characterised in that: it is provided with pressure-regulating valve (31) at the described supercharging gas outlet of described pressurizer (4).
Liquid nitrogen supercharging fireproof fire-extinguishing system the most according to claim 4, it is characterized in that: between described surge tank (8) and described liquid nitrogen vaporizer (7), be provided with check valve (34), it is provided with the second control valve (35) between described surge tank (8) and described note gas nitrogen pipe (102), described surge tank (8) is provided with the second Pressure gauge (112).
Liquid nitrogen supercharging fireproof fire-extinguishing system the most according to claim 5, it is characterised in that: described surge tank (8) is gasbag-type surge tank.
Liquid nitrogen supercharging fireproof fire-extinguishing system the most according to claim 6, it is characterised in that: it is provided with quick fill adapter (2) on described liquid nitrogen container (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521103786.6U CN205445661U (en) | 2015-12-25 | 2015-12-25 | Liquid nitrogen pressure boost fire extinction/protection system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521103786.6U CN205445661U (en) | 2015-12-25 | 2015-12-25 | Liquid nitrogen pressure boost fire extinction/protection system |
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| CN205445661U true CN205445661U (en) | 2016-08-10 |
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| CN201521103786.6U Active CN205445661U (en) | 2015-12-25 | 2015-12-25 | Liquid nitrogen pressure boost fire extinction/protection system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464696A (en) * | 2015-12-25 | 2016-04-06 | 神华集团有限责任公司 | Liquid-nitrogen pressurizing fireproofing and fire extinguishing system and method |
| CN111803826A (en) * | 2020-07-16 | 2020-10-23 | 中国矿业大学 | Movable liquid nitrogen fire extinguishing system for comprehensive pipe gallery and fire extinguishing method thereof |
-
2015
- 2015-12-25 CN CN201521103786.6U patent/CN205445661U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464696A (en) * | 2015-12-25 | 2016-04-06 | 神华集团有限责任公司 | Liquid-nitrogen pressurizing fireproofing and fire extinguishing system and method |
| CN105464696B (en) * | 2015-12-25 | 2018-07-06 | 神华集团有限责任公司 | Liquid nitrogen is pressurized fireproof fire-extinguishing system and method |
| CN111803826A (en) * | 2020-07-16 | 2020-10-23 | 中国矿业大学 | Movable liquid nitrogen fire extinguishing system for comprehensive pipe gallery and fire extinguishing method thereof |
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