CN215138063U - Closed-loop safety ventilation system of full-covering soil tank - Google Patents
Closed-loop safety ventilation system of full-covering soil tank Download PDFInfo
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- CN215138063U CN215138063U CN202120572070.XU CN202120572070U CN215138063U CN 215138063 U CN215138063 U CN 215138063U CN 202120572070 U CN202120572070 U CN 202120572070U CN 215138063 U CN215138063 U CN 215138063U
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- 239000002689 soil Substances 0.000 title claims abstract description 34
- 238000009423 ventilation Methods 0.000 title claims abstract description 22
- 238000012545 processing Methods 0.000 claims abstract description 21
- 238000012544 monitoring process Methods 0.000 claims abstract description 9
- 238000003860 storage Methods 0.000 claims description 31
- 230000001502 supplementing effect Effects 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000007664 blowing Methods 0.000 claims description 2
- 238000004880 explosion Methods 0.000 abstract description 14
- 238000009825 accumulation Methods 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 168
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000007306 turnover Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005399 mechanical ventilation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003915 liquefied petroleum gas Substances 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The utility model relates to a cover closed loop safety ventilation system of soil jar entirely, it includes: the device comprises a gas collecting and exhausting unit, a safety sealing unit and a gas processing assembly; the gas collecting pipe is arranged in the valve chamber and the channel, the gas collecting pipe is connected with the fan, and the fan is connected with the exhaust pipe; the gas monitor of the safety closed unit is used for monitoring the concentration of the combustible gas, the temperature sensor controller is connected with the gas monitor, the temperature sensor and the valve through leads, the controller sets an alarm temperature, and when the temperature sensor detects that the actual temperature value reaches the alarm temperature, the valve acts to close the gas collecting pipe; one end of the gas collecting pipe is connected with the fan, the fan is connected with the gas processing assembly through the exhaust pipe, and the other end of the gas collecting pipe extends downwards along the soil covering slope to extend through the valve chamber or the channel and then is distributed inside the valve chamber and the channel. The utility model can prevent the harmful gas accumulation and explosion danger inside the valve chamber and the passage; can monitor, the early warning to dangerous situation, prevent to cause bigger harm to the earthing jar.
Description
Technical Field
The utility model relates to an earthing jar field, concretely relates to cover closed loop safety ventilation system of soil jar entirely.
Background
The earthing type storage means that liquefied petroleum gas under normal temperature is pressurized and stored in a tank or under the ground, reasonable and comprehensive backfilling is carried out, the technology is very suitable for storing flammable and explosive liquid materials, the tank body can be protected, the heat and shock waves of combustion and explosion are prevented from influencing other tank bodies, risks can be effectively reduced, the tank bodies can be closer to the ground for installation, and occupied land is saved. The current full earthing tank body technology is still immature, a half-layer earthing technology is mainly used abroad, a tank body bottom component supporting structure and upper-layer earthing are adopted, but the advantage of full earthing is obviously higher from the safety perspective. However, after the tank body is fully covered with soil, a valve chamber and a channel need to be arranged near the tank body to perform layout management on pipelines, and in the long-term storage process of materials stored in the tank body after full covering with soil, particularly, harmful gases such as oil gas and the like are easily emitted in the spaces such as the valve and the channel, and in order to ensure the normal operation of a process system and reduce the concentration of the harmful gases to the range allowed by safe production, a specific ventilation system needs to be equipped for the full covering with soil tank system, so that the influence of temperature needs to be considered, and the oil gas combustion problem caused by local high temperature is avoided.
SUMMERY OF THE UTILITY MODEL
The utility model provides a transfer device of a heat-insulating decorative plate, which can prevent harmful gas accumulation and explosion danger inside a valve chamber and a channel; can monitor, the early warning to dangerous situation, prevent to cause bigger harm to the earthing jar to above-mentioned technical problem has been solved.
The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be:
the utility model provides a closed loop safety ventilation system who covers soil jar entirely, its structure includes: the device comprises a gas collecting and exhausting unit, a safety sealing unit and a gas processing assembly; the air collecting and discharging unit comprises an air collecting pipe, the air collecting pipe is arranged in a valve chamber and a channel, the valve chamber and the channel are arranged in the soil covering side slope, the soil covering side slope is formed outside the tank body, the air collecting pipe is connected with an air inlet end of a fan, and an air outlet end of the fan is connected with an exhaust pipe; the air collecting pipe is positioned in the valve chamber and the channel, the fan and the exhaust pipe are positioned outside the valve chamber and the channel, and the air collecting pipe is used for absorbing gas inside the valve chamber and the channel to enable the valve chamber and the channel to form a relative negative pressure state;
the safety sealing unit comprises a gas monitor, a temperature sensor, a valve and a controller; the gas monitor is arranged in the valve chamber and the channel and used for monitoring the concentration of the combustible gas, the temperature sensor is arranged in the valve chamber and the channel, the valve is arranged in the gas collecting pipe, the controller is connected with the gas monitor, the temperature sensor and the valve through leads, the controller sets an alarm temperature, and when the temperature sensor detects that the actual temperature value reaches the alarm temperature, the valve acts to close the gas collecting pipe;
the gas processing assembly is arranged at the top of the soil covering side slope, one end of the gas collecting pipe is connected with the fan, the fan is connected with the gas processing assembly through the exhaust pipe, and the other end of the gas collecting pipe extends downwards along the soil covering side slope, extends through the valve chamber or the channel and then is distributed inside the valve chamber and the channel.
In a preferred implementation mode, the fan can also convey air outside the exhaust pipe to blow air into the channel and the valve chamber, and the air blowing amount cannot exceed 80% of the air discharging amount in the same time period, so that the valve chamber and the channel are kept in a relative negative pressure state.
The fan can not only discharge the gas in the valve chamber and the channel to the outside, but also reversely send the outside gas into the valve chamber and the channel, and the harmful gas accumulated in the valve chamber and the channel can be discharged through the form, so that the dangers of explosion and the like caused by the large accumulation and overhigh concentration of the harmful gas can be effectively avoided; relatively clean gas can be sent into the valve chamber and the channel again, and the gas pressure in the valve chamber and the channel can be kept in a relatively stable state; meanwhile, the air supply amount is not more than 80% of the air exhaust amount in the same time period, so that the valve chamber and the channel can be kept in a relative negative pressure state, the air in the valve chamber and the channel can be exhausted as much as possible, and the air exchange effect is better.
In a preferred implementation mode, the air outlet end of the air treatment assembly is connected with a circulating pipe, the circulating pipe is connected with an air storage tank, the air storage tank is connected with an exhaust pipe through an air supplementing pipe, a one-way valve is arranged in the air supplementing pipe and only allows air in the air storage tank to enter the exhaust pipe, and the air storage tank is provided with a barometer and a pressure release valve.
The gas from the valve chamber and the channel enters the gas processing component through the exhaust pipe, the gas processing component cleans harmful gas, clean gas enters the gas storage tank through the circulating pipe for temporary storage, the gas storage tank is connected with the exhaust pipe through the gas supplementing pipe, when air needs to be supplied into the valve chamber or the channel, the gas in the gas storage tank can enter the exhaust pipe through the gas supplementing pipe, and then is finally sent into the valve chamber and the channel through the fan and the gas collecting pipe, so that a closed loop for gas circulation and circulation is formed; the gas supply pipe is also internally provided with a one-way valve which only allows the gas in the treated gas storage tank to be discharged, and the gas in the reverse direction cannot be discharged into the gas storage tank, so that the gas in the gas storage tank can be prevented from being polluted; therefore, harmful gas cannot be discharged to the outside all the time, but flows in a closed loop all the time and plays a role, and the structure is harmless to the external environment and very environment-friendly; the setting of barometer and relief valve then can play the inside gas pressure of monitoring gas storage tank, when the inside gas pressure of gas storage tank was too big, can also in time release pressure through the relief valve, can avoid taking place danger, has strengthened entire system's security.
In a preferred implementation, the gas treatment assembly is provided as a multi-stage gas filtration structure to adsorb different components of the gas.
Harmful gas components from the valve chamber and the interior of the channel are not single, and the gas processing assembly is provided with a multi-stage gas filtering structure so as to carry out grading processing on different components, so that the harmful gas processing assembly is more targeted, more thorough and safer.
In a preferred implementation mode, the exhaust pipe is provided with a flow valve, and the flow valve is connected with the controller through a lead and used for monitoring the exhaust volume.
The setting through the flow valve can monitor the displacement or the air input in a period of time, and then transmit the signal that obtains to the controller, the controller carries out regulation and control on next step according to the signal that the transmission comes again, avoid valve chamber and passageway internal pressure to be maladjusted, cause serious harm, the controller can control the quantity of gas of business turn over valve chamber and passageway through adjusting flow valve how much, also can control the quantity of gas of business turn over valve chamber and passageway through the operating power of control fan how much, the above-mentioned structure convenient to use, the reaction is rapid, can improve whole system security performance.
In a preferred implementation, the closed-loop safety ventilation system of the all-covered soil tank further comprises an alarm, the alarm is connected with the controller through a lead, the controller sets the alarm concentration of the combustible gas, and when the actual concentration of the combustible gas in the valve chamber and the channel reaches the alarm concentration, the controller triggers the alarm.
The structure can accurately detect the concentration of the combustible gas in the valve chamber and the channel, and can preset a warning value, when the actual concentration of the combustible gas reaches the warning concentration, the controller triggers the alarm, the corresponding fan is linked with the alarm, and the fan is started when the alarm gives an alarm. At the moment, the working personnel can rapidly take effective measures to avoid the combustible gas in the valve chamber and the channel from continuously accumulating, even reaching the explosion degree, avoid more serious conditions and improve the safety of the whole system.
In a preferred embodiment, the valve is designed as a flameproof valve. If dangerous conditions such as combustible gas explosion and the like occur in the valve chamber and the channel, the explosion-proof fire-proof valve in the gas collecting pipe becomes a safety line, the influence generated by explosion can be prevented from continuously spreading outwards to influence a gas tank body or equipment, and the safety performance is good.
In a preferred implementation mode, the warning temperature is set to 70 ℃, when the temperature sensor monitors that the actual temperature reaches the warning temperature, the explosion-proof fire-proof valve is fused to close the gas collecting pipe, and meanwhile, the corresponding fan is closed in a linkage mode.
When the temperature sensor monitors that the actual temperature reaches the warning temperature, the situation that the temperature is too high and dangerous is easy to occur is shown, the explosion-proof fire-proof valve can be fused and the gas collecting pipe is closed, a high-temperature heat source can be prevented from contacting high-concentration harmful gas and even being exploded, and further harm can be avoided.
In a preferred implementation, the gas collecting pipe and the gas exhaust pipe are Q235-B type steel pipes, and the wall thickness of the pipes is not less than 0.6 mm. The steel pipe structure is stable, reliable and high in stability, the risk of leakage can be effectively reduced, and the safety performance of the whole system can be improved.
In a preferred implementation, the fan is an explosion-proof mixed flow fan.
In order to ensure the normal operation of a process system and reduce the concentration of harmful gases to the range allowed by safe production, the two soil covering tank valve chambers and the passage can emit harmful gases such as oil gas and the like, an explosion-proof mixed flow fan is respectively arranged for air supply and exhaust in a mechanical ventilation mode, the ventilation times of the soil covering tank valve chambers and the passage are 12 times/h, and the ventilation quantity of the valve chambers is 254m 3/h. The ventilation of the passage is 1660m3/h, the air supply is 80% of the air discharge, and the negative pressure is maintained in the valve chamber and the passage. The fan has good aerodynamic performance, good airflow distribution and stable pressure; it can also play a role in blocking when dangerous conditions of combustible gas explosion occur.
The utility model adopts the above structure beneficial effect is: the harmful gas accumulation and explosion danger in the valve chamber and the channel can be prevented; can monitor, the early warning to dangerous situation, prevent to cause bigger harm to the earthing jar.
Drawings
The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:
fig. 1 is a schematic front view of the cross-section of the present invention.
In the figure, the position of the upper end of the main shaft,
1. a gas collecting pipe; 101. a valve; 2. a fan; 3. an exhaust pipe; 301. a flow valve; 4. a valve chamber; 401. A gas monitor; 402. a temperature sensor; 5. a controller; 6. a channel; 7. soil is covered on the side slope; 8. a tank body; 9. a wire; 10. a gas processing assembly; 11. a circulation pipe; 12. a gas storage tank; 1201. a barometer; 1202. a pressure relief valve; 13. a gas supplementing pipe; 1301. a one-way valve; 14. an alarm.
Detailed Description
In order to more clearly explain the overall concept of the present invention, the following detailed description is given by way of example in conjunction with the accompanying drawings.
It should be noted that in the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed below.
As shown in fig. 1, a closed-loop safety ventilation system of a full-covered soil tank structurally comprises: a collection exhaust unit, a safety enclosure unit and a gas processing assembly 10; the gas collecting and discharging unit comprises a gas collecting pipe 1, the gas collecting pipe 1 is arranged in a valve chamber 4 and a channel 6, the valve chamber 4 and the channel 6 are arranged in an earth covering side slope 7, the earth covering side slope 7 is formed outside a tank body 8, the gas collecting pipe 1 is connected with the gas inlet end of a fan 2, and the gas outlet end of the fan 2 is connected with a gas exhaust pipe 3; the gas collecting pipe 1 is positioned in the valve chamber 4 and the channel 6, the fan 2 and the exhaust pipe 3 are positioned outside the valve chamber 4 and the channel 6, and the gas collecting pipe 1 is used for absorbing gas inside the valve chamber 4 and the channel 6 to enable the valve chamber 4 and the channel 6 to form a relative negative pressure state;
the safety enclosure unit comprises a gas monitor 401, a temperature sensor 402, a valve 101 and a controller 5; the gas monitor 401 is arranged in the valve chamber 4 and the channel 6 and used for monitoring the concentration of the combustible gas, the temperature sensor 402 is arranged in the valve chamber 4 and the channel 6, the valve 101 is arranged in the gas collecting pipe 1, the controller 5 is connected with the gas monitor 401, the temperature sensor 402 and the valve 101 through a lead 9, the controller 5 sets an alarm temperature, and when the temperature sensor 402 detects that the actual temperature value reaches the alarm temperature, the valve 101 acts to close the gas collecting pipe 1;
the gas processing assembly 10 is arranged at the top of the soil covering side slope 7, one end of the gas collecting pipe 1 is connected with the fan 2, the fan 2 is connected with the gas processing assembly 10 through the exhaust pipe 3, and the other end of the gas collecting pipe 1 extends downwards along the soil covering side slope 7, extends through the valve chamber 4 or the channel 6 and then is distributed inside the valve chamber 4 and the channel 6.
Further, the fan 2 can also convey the air outside the exhaust pipe 3 to the exhaust pipe 3 and supply air into the passage 6 and the valve chamber 4, and the air supply amount cannot exceed 80% of the air discharge amount in the same time period, so that the valve chamber 4 and the passage 6 are kept in a relative negative pressure state.
The fan 2 can not only discharge the gas in the valve chamber 4 and the channel 6 to the outside, but also reversely send the outside gas into the valve chamber 4 and the channel 6, and by the mode, the harmful gas accumulated in the valve chamber 4 and the channel 6 can be discharged, thereby effectively avoiding the dangers of explosion and the like caused by the large accumulation and over-high concentration of the harmful gas; relatively clean gas can be sent into the valve chamber 4 and the channel 6 again, and the gas pressure in the valve chamber 4 and the channel 6 can be kept in a relatively stable state; meanwhile, the air supply amount is ensured not to exceed 80% of the air exhaust amount in the same time period, so that the relative negative pressure state in the valve chamber 4 and the channel 6 can be kept, the air in the valve chamber 4 and the channel 6 can be ensured to be exhausted as much as possible, and the air exchange effect is better.
Further, the air outlet end of the gas processing assembly 10 is connected with a circulating pipe 11, the circulating pipe 11 is connected with a gas storage tank 12, the gas storage tank 12 is connected with the exhaust pipe 3 through a gas supplementing pipe 13, a one-way valve 1301 is arranged in the gas supplementing pipe 13, the one-way valve 1301 only allows gas in the gas storage tank 12 to enter the exhaust pipe 3, and the gas storage tank 12 is provided with a barometer 1201 and a pressure release valve 1202.
The gas from the valve chamber 4 and the channel 6 enters the gas processing assembly 10 through the exhaust pipe 3, the gas processing assembly 10 cleans harmful gas, clean gas enters the gas storage tank 12 through the circulating pipe 11 for temporary storage, the gas storage tank 12 is connected with the exhaust pipe 3 through the gas supplementing pipe 13, when air needs to be supplied to the valve chamber 4 or the channel 6, the gas in the gas storage tank 12 can enter the exhaust pipe 3 through the gas supplementing pipe 13, and then is finally sent into the valve chamber 4 and the channel 6 through the fan 2 and the gas collecting pipe 1, so that a closed loop with gas circulation and circulation is formed; the gas supply pipe 13 is also provided with a one-way valve 1301 which only allows the gas in the treated gas storage tank 12 to be discharged, and the gas in the opposite direction cannot be discharged into the gas storage tank 12, so that the gas in the gas storage tank 12 can be prevented from being polluted; therefore, harmful gas cannot be discharged to the outside all the time, but flows in a closed loop all the time and plays a role, and the structure is harmless to the external environment and very environment-friendly; the setting of barometer 1201 and relief valve 1202 then can play the inside gas pressure of monitoring gas holder 12, and when the inside gas pressure of gas holder 12 was too big, can also in time release the pressure through relief valve 1202, can avoid taking place danger, has strengthened entire system's security.
Further, the gas treatment module 10 is configured as a multi-stage gas filtration structure to adsorb different components of the gas.
The harmful gas components from the valve chamber 4 and the inside of the channel 6 are not single, and the gas processing assembly 10 is provided with a multi-stage gas filtering structure, so that the grading treatment can be carried out on different components, and the treatment on the harmful gas is more targeted, more thorough and safer.
Further, a flow valve 301 is arranged on the exhaust pipe 3, and the flow valve 301 is connected with the controller 5 through a lead 9 and used for monitoring the exhaust gas volume.
Can monitor the displacement or the air input in a period of time through the setting of flow valve 301, and then transmit the signal that obtains to controller 5, controller 5 carries out regulation and control on next step according to the signal that comes the transmission again, avoid valve chamber 4 and passageway 6 internal pressure to be maladjusted, cause serious harm, controller 5 can control the quantity of gas of business turn over valve chamber 4 and passageway 6 through adjusting flow valve 301 how much, also can control the quantity of gas of business turn over valve chamber 4 and passageway 6 through the operating power of control fan 2 how much, the above-mentioned structure convenient to use, the reaction is rapid, can improve whole system security performance.
Further, the closed-loop safety ventilation system of the full-covered soil tank also comprises an alarm 14, the alarm 14 is connected with the controller 5 through a lead 9, the controller 5 sets the alarm concentration of the combustible gas, and when the actual concentration of the combustible gas in the valve chamber 4 and the channel 6 reaches the alarm concentration, the controller 5 triggers the alarm 14.
The structure can accurately detect the concentration of the combustible gas in the valve chamber 4 and the channel 6, and can preset a warning value, when the actual concentration of the combustible gas reaches the warning concentration, the controller 5 triggers the alarm 14, the corresponding fan 2 is linked with the alarm 14, and the fan 2 is started when the alarm 14 gives an alarm. At this moment, the staff can take effective measures rapidly, avoid the combustible gas in valve chamber 4 and the passageway 6 to continue to gather, reach the degree of explosion even, can avoid taking place more serious condition, improved the security of entire system.
Further, the valve 101 is an explosion-proof and fire-proof valve. If dangerous conditions such as combustible gas explosion occur in the valve chamber 4 and the channel 6, the explosion-proof fire-proof valve in the gas collecting pipe 1 becomes a safety line, the influence caused by explosion can be prevented from continuously spreading outwards to influence the gas tank body 8 or equipment, and the safety performance is good.
Further, the alarm temperature is set to 70 ℃, when the temperature sensor 402 detects that the actual temperature reaches the alarm temperature, the explosion-proof fire-proof valve is fused to close the gas collecting pipe 1, and simultaneously, the corresponding fan 2 is closed in a linkage manner.
When the temperature sensor 402 monitors that the actual temperature reaches the warning temperature, it is indicated that the temperature is too high at this time and a dangerous situation is easily caused, and at this time, the explosion-proof fire-proof valve is fused and closes the gas collecting pipe 1, so that a high-temperature heat source can be prevented from contacting high-concentration harmful gas and even being exploded, and further harm can be avoided.
Further, the gas collecting pipe 1 and the gas exhaust pipe 3 are Q235-B type steel pipes, and the wall thickness of the pipes is not less than 0.6 mm. The steel pipe structure is stable, reliable and high in stability, the risk of leakage can be effectively reduced, and the safety performance of the whole system can be improved.
Further, the fan 2 is set as an explosion-proof mixed flow fan 2.
In order to ensure the normal operation of a process system and reduce the concentration of harmful gases to the range allowed by safe production, the valve chambers 4 and the channels 6 of the two soil covering tanks can emit harmful gases such as oil gas and the like, and an explosion-proof mixed flow fan 2 is respectively arranged for air supply and exhaust in a mechanical ventilation mode, the ventilation times of the valve chambers 4 and the channels 6 of the soil covering tanks are 12 times/h, and the ventilation quantity of the valve chambers 4 is 254m 3/h. The ventilation of the passage 6 is 1660m3/h, the air supply is 80% of the air discharge, and the valve chamber 4 and the passage 6 are maintained at negative pressure. The fan 2 has good aerodynamic performance, good airflow distribution and stable pressure; it can also play a role in blocking when dangerous conditions of combustible gas explosion occur.
The technical solution protected by the present invention is not limited to the above embodiments, and it should be noted that the technical solution of any one embodiment is combined with the technical solution of one or more other embodiments in the protection scope of the present invention. Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (10)
1. A closed-loop safety ventilation system of a full-covered soil tank is characterized by comprising:
the air collecting and exhausting unit comprises an air collecting pipe, the air collecting pipe is arranged in a valve chamber and a channel, the valve chamber and the channel are arranged inside an earth covering side slope, the earth covering side slope is formed outside the tank body, the air collecting pipe is connected with an air inlet end of a fan, and an air outlet end of the fan is connected with an exhaust pipe; the air collecting pipe is positioned in the valve chamber and the channel, the fan and the exhaust pipe are positioned outside the valve chamber and the channel, and the air collecting pipe is used for absorbing gas inside the valve chamber and the channel to enable a relative negative pressure state to be formed in the valve chamber and the channel;
a safety enclosure unit comprising a gas monitor, a temperature sensor, a valve, and a controller; the gas monitor is arranged in the valve chamber and the channel and used for monitoring the concentration of combustible gas, the temperature sensor is arranged in the valve chamber and the channel, the valve is arranged in the gas collecting pipe, the controller is connected with the gas monitor, the temperature sensor and the valve through leads, the controller sets an alarm temperature, and when the temperature sensor detects that the actual temperature value reaches the alarm temperature, the valve acts to close the gas collecting pipe;
the gas processing assembly is arranged at the top of the soil covering side slope, one end of the gas collecting pipe is connected with the fan, the fan is connected with the gas processing assembly through the exhaust pipe, and the other end of the gas collecting pipe extends downwards along the soil covering side slope, extends through the valve chamber or the channel and then is distributed in the valve chamber and the channel.
2. The closed-loop safety ventilation system of the all-covering-soil tank as claimed in claim 1, wherein the blower is further capable of sending air outside the exhaust pipe to blow air into the passage and the valve chamber, and the air blowing amount of the blower cannot exceed 80% of the air discharging amount in the same time period, so that the valve chamber and the passage are kept in a relative negative pressure state.
3. The closed-loop safe ventilation system of the all-covering-soil tank as claimed in claim 1 or 2, wherein the air outlet end of the gas processing component is connected with a circulating pipe, the circulating pipe is connected with a gas storage tank, the gas storage tank is connected with the exhaust pipe through a gas supplementing pipe, a one-way valve is arranged in the gas supplementing pipe, the one-way valve only allows the gas in the gas storage tank to enter the exhaust pipe, and the gas storage tank is provided with a barometer and a pressure release valve.
4. The system of claim 1, wherein the gas treatment module is configured as a multi-stage gas filtration system to adsorb different components of the gas.
5. The closed-loop safety ventilation system of the all-over-soil tank as claimed in claim 1, wherein the exhaust pipe is provided with a flow valve, and the flow valve is connected with the controller through a lead for monitoring the exhaust gas volume.
6. The closed-loop safety vent system for all-covered soil tanks, according to claim 1, further comprising an alarm, said alarm being connected to said controller via a wire, said controller setting a warning concentration of the combustible gas, said controller triggering said alarm when the actual concentration of the combustible gas in said valve chamber and passageway reaches said warning concentration.
7. The closed-loop safety vent system for all-covered soil tanks of claim 1, wherein the valve is an explosion-proof fire-proof valve.
8. The closed-loop safety ventilation system of the all-covered soil tank as claimed in claim 7, wherein the alarm temperature is set to 70 ℃, and when the temperature sensor monitors that the actual temperature reaches the alarm temperature, the explosion-proof fire-proof valve is fused to close the gas collecting pipe.
9. The closed-loop safe ventilation system of the all-covered soil tank as claimed in claim 1, wherein the gas collecting pipe and the gas discharging pipe are Q235-B type steel pipes, and the wall thickness of the pipe is not less than 0.6 mm.
10. The closed-loop safety ventilation system of the all-covering-soil tank as claimed in claim 1, wherein the fan is an explosion-proof mixed flow fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120572070.XU CN215138063U (en) | 2021-03-19 | 2021-03-19 | Closed-loop safety ventilation system of full-covering soil tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120572070.XU CN215138063U (en) | 2021-03-19 | 2021-03-19 | Closed-loop safety ventilation system of full-covering soil tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215138063U true CN215138063U (en) | 2021-12-14 |
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ID=79351900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120572070.XU Active CN215138063U (en) | 2021-03-19 | 2021-03-19 | Closed-loop safety ventilation system of full-covering soil tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215138063U (en) |
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2021
- 2021-03-19 CN CN202120572070.XU patent/CN215138063U/en active Active
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