CN208074591U - A kind of gas station's positive pressure pipeline leakage control system - Google Patents
A kind of gas station's positive pressure pipeline leakage control system Download PDFInfo
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- CN208074591U CN208074591U CN201820484171.XU CN201820484171U CN208074591U CN 208074591 U CN208074591 U CN 208074591U CN 201820484171 U CN201820484171 U CN 201820484171U CN 208074591 U CN208074591 U CN 208074591U
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- 230000007257 malfunction Effects 0.000 claims abstract description 12
- 230000003111 delayed effect Effects 0.000 claims description 10
- 238000001514 detection method Methods 0.000 abstract description 10
- 239000000446 fuel Substances 0.000 abstract description 4
- 230000009471 action Effects 0.000 abstract description 3
- 230000008859 change Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
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Abstract
The utility model discloses a kind of gas station's positive pressure pipeline leakage control system, including a latent pump, control line, the negative terminal of the latent pump connect power supply through an A.C. contactor normally opened contact, and oil gun circuit, malfunction indicator lamp circuit, time control circuit and pressure switch circuit are connected between the latent pump control line and A.C. contactor normally opened contact.The size that leakage is judged using the time relay, within setting time, if leak detection system action represents, the amount of leaking hunting is larger, and stopping is refueled；If leak detection system acts except between setting, indicates that the amount of leaking hunting is very small, in safe range, can be ignored, allow fuel charger normally to refuel, it is therefore an objective to shield system frequent movement caused by the small interior leakage of oil-immersed pump.
Description
Technical field
The utility model is related to petroleum pipeline detection technique field more particularly to a kind of gas station's positive pressure pipeline leakage controls
System.
Background technology
A kind of gas station's pipeline leak detection system is disclosed in a Chinese utility model patent ZL 201620150219.4, is wrapped
Include oil-immersed pump, pressure control device, resetting apparatus, intermediate relay, A.C. contactor and middle control module；The pressure control
Device includes pressure switch and pressure gauge；The pressure switch is electrically connected with middle control module, and the connection of pressure switch normally-closed contact is latent
Oil pump first terminal, pressure switch normally opened contact is by connecting alternating current firewire after the intermediate relay coil；The oil-immersed pump
First terminal, Second terminal connect alternating current after being separately connected the AC contact control switch；The ac contactor coil
The zero curve of one end connection alternating current and the first terminal for connecting oil-immersed pump, the other end is by connecting alternating current firewire after resetting apparatus；It hands over
The common node that stream contactor coil is connect with resetting apparatus connects after being sequentially connected in series intermediate relay control switch and refueling nozzle
Alternating current firewire.The system saves input cost, can monitor the pressure change in gas station's pipeline in real time using simply.But
Be this application be unable to judge accurately leakage be by pipeline damage caused by or the small interior leakage of oil-immersed pump caused by, so as to cause mistake
More actuation of an alarms, influences the judgement of operating personnel, and pipeline specific aim of leaking hunting is poor.For this problem, it is desirable to provide Yi Zhonggai
Into mode.
Utility model content
The purpose of this utility model is that it is daily frequently dynamic caused by small internal leakage in pipeline to propose that one kind can shield
Gas station's positive pressure pipeline leakage control system of work.
To achieve the goals above, technical solution used by the utility model is：
A kind of gas station's positive pressure pipeline leakage control system, including a latent pump, the control line of the latent pump, negative terminal are through one
A.C. contactor normally opened contact connects power supply, and oil gun is connected between the latent pump control line and A.C. contactor normally opened contact and is returned
Road, malfunction indicator lamp circuit, time control circuit and pressure switch circuit；The oil gun circuit includes oil gun, intermediate relay
First normally-closed contact and ac contactor coil, described oil gun one end connect power firestreak, and the oil gun other end is sequentially connected in series centre
Latent pump control line is connected after the first normally-closed contact of relay and ac contactor coil；Latent pump control line and ac contactor coil
The common node of connection is also connected with zero-power line；The malfunction indicator lamp circuit includes that intermediate relay normally opened contact and failure refer to
Show that lamp, intermediate relay normally opened contact one end connect power firestreak, latent pump control is connected after other end series fault indicator light
Line processed；The time control circuit includes A.C. contactor normally-closed contact, the second normally-closed contact of intermediate relay and time relay
Device coil；Power firestreak is sequentially connected in series A.C. contactor normally-closed contact, the second normally-closed contact of intermediate relay and the time relay
Latent pump control line is connected to after coil；The pressure switch circuit includes time relay delayed contact, intermediate relay coil
And pressure switch, time relay delayed contact one end is connected to A.C. contactor normally-closed contact and intermediate relay second is normally closed
The connecting node of contact, the time relay other end are connected to pressure switch normally opened contact after connecting intermediate relay coil, press
Power switch conversion contact is connect with latent pump control line.
Wherein, include multiple oil guns parallel with one another on the oil gun circuit.
The beneficial effects of the utility model are：
The reason of the utility model judges leakage using the time relay, within setting time, if leak detection system is dynamic
It is larger to make the representative amount of leaking hunting, stops refueling；If leak detection system acts except setting time, indicate that the amount of leaking hunting is very small,
It in safe range, can be ignored, fuel charger allowed normally to refuel.The system, which can distinguish leakage, is drawn by conduit failure
Caused by associated components are poorly sealed in rise or oil-immersed pump, wrong report is reduced, plays the role of accurately reflecting pipeline leakage.
Description of the drawings
Fig. 1 is the circuit diagram of the utility model gas station positive pressure pipeline leakage control system.
Reference numeral is：
Negative terminal -1, control line -2, A.C. contactor normally opened contact -3, ac contactor coil -4, intermediate relay
One normally-closed contact -5, intermediate relay normally opened contact -6, malfunction indicator lamp -7, A.C. contactor normally-closed contact -8, intermediate relay
The second normally-closed contact -9 of device, time relay coil -10, time relay delayed contact -11, intermediate relay coil -12, pressure
Power switch-SP, dive pump-M, the first oil gun-K1, the second oil gun-K2, third oil gun-K3.
Specific implementation mode
The utility model is described in detail below with reference to specific implementation mode shown in the drawings.But these embodiment party
Formula is not intended to limit the utility model, structure that those skilled in the art are made according to these embodiments, method or
Transformation functionally is all contained in the scope of protection of the utility model.
As shown in fig.1, disclosing a kind of gas station's positive pressure pipeline leakage control system in an embodiment of the utility model
System, including a latent pump M, control line 2, the negative terminal 1 of the latent pump M connect power supply through an A.C. contactor normally opened contact 3, described
Power supply is alternating current, and oil gun circuit, malfunction indicator lamp are connected between the latent pump control line 2 and A.C. contactor normally opened contact 3
Circuit, time control circuit and pressure switch circuit；The oil gun circuit includes oil gun, the first normally-closed contact of intermediate relay 5
And ac contactor coil 4, the oil gun include the first oil gun K1, the second oil gun K2, third oil gun K3, the first oil gun K1, the
Two oil gun K2, third oil gun K3 are parallel with one another.Described oil gun one end connects power firestreak L, and the oil gun other end is sequentially connected in series centre
Latent pump control line 2 is connected after the first normally-closed contact of relay 5 and ac contactor coil 4；Latent pump control line 2 and A.C. contactor
The common node that coil 4 connects is also connected with zero-power line N；The malfunction indicator lamp circuit includes intermediate relay normally opened contact 6
And malfunction indicator lamp 7, described 6 one end of intermediate relay normally opened contact connect power firestreak L, other end series fault indicator light 7
The latent pump control line 2 of connection afterwards；The time control circuit includes that A.C. contactor normally-closed contact 8, intermediate relay second are normally closed
Contact 9 and time relay coil 10；Power firestreak L is sequentially connected in series A.C. contactor normally-closed contact 8, and intermediate relay second is normal
Latent pump control line 2 is connected to after closed contact 9 and time relay coil 10；The pressure switch circuit includes that the time relay prolongs
When contact 11, intermediate relay coil 12 and pressure switch SP, 11 one end of time relay delayed contact is connected to ac contactor
The connecting node of device normally-closed contact 8 and the second normally-closed contact of intermediate relay 9, the connection of 11 other end of time relay delayed contact
Pressure switch SP normally opened contacts are connected to after intermediate relay coil 12, pressure switch transfer contact is connect with latent pump control line 2.
Gas station's positive pressure pipeline leakage control System Working Principle is as follows：Pipeline does not have under leakage scenarios, static pressure
Power is maintained at 0.1MPa or so, and pressure switch SP normally opened contacts are in open-circuit condition, the event that intermediate relay normally opened contact 6 connects
Barrier indicator light 7 does not work, and the first normally-closed contact of intermediate relay 5 seals in latent pump control line 2, when oil gun K1/K2/K3 does not carry rifle,
A.C. contactor normally opened contact 3 is opened a way, and A.C. contactor normally-closed contact 8 is closed, and latent pump M does not work, time relay KT electrifications
Work.
When the first oil gun K1, the second oil gun K2, third oil gun K3 carry rifle, A.C. contactor normally opened contact 3 is closed, exchange
Contactor normally-closed contact 8 disconnects, and connects latent pump M power cords, starts latent pump M and refuels, time relay KT timing terminates；When first
When oil gun K1, the second oil gun K2, third oil gun K3 do not carry rifle, A.C. contactor normally-closed contact 8 is closed, and A.C. contactor is normally opened to be touched
Point 3 disconnects, and disconnects latent pump M power cords, and the pump M that dives stops refueling, and time relay KT timing starts.
In the case of pipeline leakage is larger, i.e., within time relay KT setting times, line static pressure, which drops to, to be set
When below definite value, pressure switch SP normally opened contacts are closed, and intermediate relay normally opened contact 6 is closed, and malfunction indicator lamp 7 is bright, intermediate
The second normally-closed contact of relay 9 disconnects, and 10 dead electricity of time relay coil, time relay delayed contact 11 is closed always, in
Between relay coil 12 can work always, A.C. contactor control coil 4 cannot be formed into a loop, the first oil gun K1, second oil
Rifle K2, third oil gun K3 carry rifle, and A.C. contactor normally opened contact 3 cannot be attracted, and latent pump M cannot work, and gas station will start
Leak detection working procedure.
I.e. pipeline leakage it is smaller in the case of, within time relay KT setting times, pressure switch SP is failure to actuate, can be with
Normal to refuel, except time relay KT setting times, time relay delayed contact 11 then disconnects, intermediate relay coil
The normally-closed contact of 12 dead electricity, intermediate relay K is normally closed, and normally opened contact is normally opened, even if pressure switch SP actions, intermediate relay K
It still cannot obtain electric, oiling is normally carried out.When i.e. pipeline is leaked within the range of permission, leak detection system is failure to actuate, fuel charger
It can normally refuel.
Furthermore, it is possible to which this is according to gas station's pipeline diameter and the difference of length of pipeline, when the work of the time relay is arranged
Between, within setting time, if leak detection system action represents, the amount of leaking hunting is larger, and stopping is refueled；If except between setting
Leak detection system acts, and indicates that the amount of leaking hunting is very small, in safe range, can be ignored, fuel charger is allowed normally to refuel.
Accurate judgement leakage is to reduce false alarm caused by pipeline damage or caused by other associated components are poorly sealed, rise
To the effect of true reflection pipeline leakage.
The judgement of time relay working time：The relationship of working time T and length of pipeline L, pipeline diameter D：
T=(D/D0)²*（L/L0）*T0
Wherein D0 is pipeline datum diameter, D0=50mm;
L0 is pipeline datum length, L0=30m;
Time on the basis of T0, T0=5min；
D is practical pipeline diameter；
L is practical length of pipeline.
After above system increases time arbitration functions, the case where device is reported by mistake can be greatly decreased, more accurately judge
Whether oil leak is caused by pipeline damage, is reduced rate of false alarm, is saved the man power and material of malfunction elimination.
It should be appreciated that although this specification is described in terms of embodiments, but not each embodiment only includes one
A independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should will say
As a whole, the technical solution in each embodiment may also be suitably combined to form those skilled in the art can for bright book
With the other embodiment of understanding.
Tool of the series of detailed descriptions listed above only for the feasible embodiment of the utility model
Body illustrates that they are all without departing from made by the utility model skill spirit not to limit the scope of protection of the utility model
Equivalent implementations or change should be included within the scope of protection of this utility model.
Claims (2)
1. a kind of gas station's positive pressure pipeline leakage control system, it is characterised in that including a latent pump (M), the latent pump（M）Control
Line processed（2）, negative terminal（1）Through an A.C. contactor normally opened contact（3）Connect power supply, the latent pump（M）Control line（2）With exchange
Contactor normally opened contact（3）Between be connected with oil gun circuit, malfunction indicator lamp（7）Circuit, time control circuit and pressure switch
（SP）Circuit；
The oil gun circuit includes oil gun, the first normally-closed contact of intermediate relay（5）And ac contactor coil（4）, the oil
Rifle one end connects power firestreak, and the oil gun other end is sequentially connected in series the first normally-closed contact of intermediate relay（5）And A.C. contactor line
Circle（4）The latent pump of connection afterwards（M）Control line（2）；Latent pump（M）Control line（2）With ac contactor coil（4）What is connected is public
Node is also connected with zero-power line；
The malfunction indicator lamp（7）Circuit includes intermediate relay normally opened contact（6）And malfunction indicator lamp（7）, the centre after
Electric appliance normally opened contact（6）One end connects power firestreak, other end series fault indicator light（7）The latent pump of connection afterwards（M）Control line
（2）；
The time control circuit includes A.C. contactor normally-closed contact（8）, the second normally-closed contact of intermediate relay（9）And the time
Relay coil（10）；Power firestreak is sequentially connected in series A.C. contactor normally-closed contact（8）, the second normally-closed contact of intermediate relay
（9）And time relay coil（10）After be connected to latent pump（M）Control line（2）；
The pressure switch（SP）Circuit includes time relay delayed contact（11）, intermediate relay coil（12）And pressure is opened
It closes（SP）, time relay delayed contact（11）One end is connected to A.C. contactor normally-closed contact（8）With intermediate relay second
Normally-closed contact（9）Connecting node, time relay delayed contact（11）The other end connects intermediate relay coil（12）After connect
It is connected to pressure switch（SP）Normally opened contact, pressure switch（SP）Transfer contact and latent pump（M）Control line（2）Connection.
2. gas station's positive pressure pipeline leakage control system according to claim 1, it is characterised in that：On the oil gun circuit
Including multiple oil guns parallel with one another.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820484171.XU CN208074591U (en) | 2018-04-04 | 2018-04-04 | A kind of gas station's positive pressure pipeline leakage control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820484171.XU CN208074591U (en) | 2018-04-04 | 2018-04-04 | A kind of gas station's positive pressure pipeline leakage control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208074591U true CN208074591U (en) | 2018-11-09 |
Family
ID=64043962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820484171.XU Active CN208074591U (en) | 2018-04-04 | 2018-04-04 | A kind of gas station's positive pressure pipeline leakage control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208074591U (en) |
-
2018
- 2018-04-04 CN CN201820484171.XU patent/CN208074591U/en active Active
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| TR01 | Transfer of patent right |
Effective date of registration: 20210412 Address after: 350000 Room 201, 2nd floor, building 1, No. 692, Xiyuan village, Xindian Town, Jin'an District, Fuzhou City, Fujian Province Patentee after: Fujian Mingqian Energy Technology Co.,Ltd. Address before: 19 / F, 189 Xiahe Road, Siming District, Xiamen City, Fujian Province 361000 Patentee before: Li Guojie Patentee before: Ma Dongkui Patentee before: Wang Yan Patentee before: Gong Yu Patentee before: Zhu Haiyao Patentee before: Zhu Zexing Patentee before: Wang Wenhua |