Upper oil filling riser oil spilling interlock control apparatus and construction procedure thereof
Technical field
The present invention relates to upper oil filling riser oil spilling interlock control apparatus and construction procedure thereof that a kind of product oil storage field is used.
Background technology
In more than ten product oil storage fields in Fujian Province, truck tanker is in the time of the filling oil product of highway quantifying and loading platform, divide upper dress oil filling riser charge of oil and lower dress oil filling riser charge of oil, wherein upper dress oil filling riser charge of oil inserts by oil filling riser after the charge of oil mouth of truck tanker roof, connect electrostatic oil spilling interlock system, after input hair oil password or the verification of swiping the card are passed through, pump startup, electromagnetic valve is opened automatically, can complete and pay oily operation.
The general electrostatic oil spilling protection system of highway quantifying and loading platform is generally the device that the protection of oil-collecting tank car electrostatic grounding and oil spilling interlocking protective device are integrated at present; wherein the effect of oil spilling interlocking protective device is mainly reflected in pouring process; because breakdown of equipment or human element cause the filling liquid level superelevation of truck tanker; when charge of oil volume exceedes safe volume; oil spilling interlocking protective device produces chain reaction; electromagnetic valve emergency cut-off; pump sudden stop; effectively control the generation of oil spill accident, as shown in Figure 1.But, not inserting and in truck tanker, start hair oil and cause the people's of oil spilling unsafe acts for upper dress oil filling riser, existing oil spilling interlocking protective device also fails it effectively to control.
Carry out statistical analysis by transferring three, Fujian Province product oil storage field accident machine account, find to cause oil spilling to account for 23.6% of total accident because not plugging dress oil filling riser hair oil, and all caused certain economic loss at every turn.Having seeked advice from other province associate organizations, all there is similar oil spill accident in questioned unit substantially, as can be seen here, causes more than oil spill accident portion because not plugging dress oil filling riser hair oil, and incidence is wide, works the mischief big.
On conventional management, the major measure that dress oil filling riser hair oil is not plugged in control is the principle of one man operation one people's monitoring, this ladder of management has been controlled the generation of oil spill accident to a certain extent, causes the incidence of oil spilling still too high but do not plug dress oil filling riser hair oil, and reason can be summed up as:
1. idealistic factor: simplification, empiricism, attitude carelessness.
2. peopleware: operant level is low, skill level is poor, experience lacks.
3. physiologic factor: super physical efficiency, overload, drink, poisoning, clouded in mind, dysphoria, spirit be excited, flurried.
4. psychological factor: heart constrains, nervous, comform, slow in reacting, error in judgement.
5. non-reason factor: self-important, paralysis, lucky, congenial, converse, wholeheartedly multiplex.
6. harsh environment factor: the harsies environment such as high temperature (causing that agitation, anxiety, self-control decline), noise (causing agitation, delay of response, absent minded), illumination deficiency (causing that fatigue, tired doze, the power to think and judgment are slow) and dust, smog, radiation, humidity easily cause behavior deviation.People's operation under rugged environment, can there are unsafe acts in nature.
7. accident or the emergency state: flurried, nervous, hurriedly cause error in judgement and behavior deviation.
8. extraneous undesirable element: mis-information guides, gives directions against regulations.
Generally, be all that people's unsafe acts cause substantially.For evading people's unsafe acts, just must need a kind of new measure to replace conventional management, effectively control the generation of this event.
Summary of the invention
Occur that in view of oil depot quantifying and loading platform is frequent the slotting direct hair oil of oil filling riser in upper dress crane position causes oil spilling, in conjunction with the development of automatization level at present, the invention provides a kind of upper oil filling riser oil spilling interlock control apparatus and construction procedure thereof, on this, oil filling riser oil spilling interlock control apparatus judges with mercury switch the state whether upper oil filling riser inserts, action judgement promptly and accurately, effectively reduce the generation of oil spill accident, and discharged labor content, reduced labour intensity.
One of technical scheme of the present invention is: oil filling riser oil spilling interlock control apparatus in one, not only comprise the control loop being formed by static oil spill protector and hair oil lower computer, also comprise wire fuse, intermediate relay and mercury switch, one end of described wire fuse is connected with the positive source of PLC controller, the other end of described wire fuse is connected with the first terminals of the coil of intermediate relay, the second terminals of the coil of described intermediate relay are connected with the first pin of the mercury switch of often opening, the second pin of described mercury switch is connected with the common terminal of PLC controller, described mercury switch be fixed on oil filling riser long-armed on, the signal input part of described static oil spill protector is connected with the first open contact of intermediate relay, the signal input part of described hair oil lower computer be connected with the second open contact of intermediate relay, the ground terminal of described static oil spill protector and hair oil lower computer ground terminal be connected.
Further, described mercury switch is installed in anti-explosion terminal box, and described anti-explosion terminal box is fixed on the long-armed front end of oil filling riser through larynx hoop.
Further, described intermediate relay and wire fuse are fixed in lower computer explosion-proof tank.
For the installation of a new control system, two of technical scheme of the present invention is: a kind of construction procedure of upper oil filling riser oil spilling interlock control apparatus, carry out according to the following steps:
(1) mercury switch is installed in anti-explosion terminal box, and draws two wires, be respectively the first leads ends and the second leads ends, adopt larynx hoop that anti-explosion terminal box is fixed on to the long-armed front end of oil filling riser, and make mercury switch in normally open;
(2) the first leads ends of mercury switch is connected with the second terminals of the coil of intermediate relay, the second leads ends of mercury switch is connected with the common terminal of PLC controller;
(3) positive source of PLC controller is connected with one end of wire fuse, the wire fuse other end is connected with the first terminals of the coil of intermediate relay;
(4) the first open contact of intermediate relay is connected with electrostatic oil spilling fender guard, and the second open contact of intermediate relay is connected with hair oil lower computer, then the ground terminal of electrostatic oil spilling fender guard is connected with the ground terminal of hair oil lower computer;
(5) wiring place is wrapped with insulating tape, prevent that the end of a thread is exposed and cause short circuit;
(6) intermediate relay, wire fuse be placed in lower computer explosion-proof tank and fix.
For the transformation of the oil spilling interlocking protective device in a Geju City; if old oil spilling interlocking protective device comprises the control loop being made up of static oil spill protector and hair oil lower computer; the signal end that is static oil spill protector and hair oil lower computer interconnects, and the ground terminal of static oil spill protector and hair oil lower computer interconnects simultaneously.Three of technical scheme of the present invention is: a kind of construction procedure of upper oil filling riser oil spilling interlock control apparatus, carry out according to the following steps:
(1) mercury switch is installed in anti-explosion terminal box, and draws two wires, be respectively the first leads ends and the second leads ends, adopt larynx hoop that anti-explosion terminal box is fixed on to the long-armed front end of oil filling riser, and make mercury switch in normally open;
(2) the first leads ends of mercury switch is connected with the second terminals of the coil of intermediate relay, the second leads ends of mercury switch is connected with the common terminal of PLC controller;
(3) positive source of PLC controller is connected with one end of wire fuse, the wire fuse other end is connected with the first terminals of the coil of intermediate relay;
(4) original static oil spill protector and the interconnective signal wire (SW) of lower computer are disconnected, the a pair of open contact of intermediate relay is concatenated between electrostatic oil spilling device and lower computer, the first open contact by intermediate relay is connected with electrostatic oil spilling fender guard, and the second open contact of intermediate relay is connected with hair oil lower computer;
(5) wiring place is wrapped with insulating tape, prevent that the end of a thread is exposed and cause short circuit;
(6) intermediate relay, wire fuse be placed in lower computer explosion-proof tank and fix.
Transformation to upper dress crane position is specially: on original oil spilling interlocking protective device basis, be connected in series mercury switch and relay, judge by the keying of mercury switch whether oil filling riser inserts, mercury switch is fixed on the long-armed front end of oil filling riser, and in the time that oil filling riser is not inserted into truck tanker, the contact of mercury switch is in normally open, relay is adhesive not, trigger chain reaction, pump cannot turn round, and electromagnetic valve is not opened, hair oil failure, has avoided oil spill accident generation; When oil filling riser is inserted into after truck tanker; mercury switch is because variation has occurred oil filling riser tendency; make the mercury switch closing of contact; and trigger action relay adhesive; if now oil spilling interlocking protective device is in non-interlocked state, whole interlocking protective system is removed interlocking, pump running; electromagnetic valve is opened, normal hair oil.Mercury switch install the function that does not affect former oil spilling interlocking protective device additional, be equivalent to have more a function on former oil spilling interlocking protective device.
Beneficial effect of the present invention is: install additional after mercury switch, because the unsafe acts of not inserting the people of oil filling riser hair oil just can make up by the safe condition of control setup, to reach the generation that reduces oil spill accident, and discharged labor content, reduced labour intensity.The inventor is at a finished oil oil depot in Fujian, choose wherein 5 upper dress crane positions and tested, by tracing observation since 18 months, because slotting oil filling riser causes the accident of oil spilling not occur again, incidence 0%, do not leave any hidden danger, do not produce the action of mistake interlocking, improvement project amount is little, easy access, with low cost, respond well, can promote the use of.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of oil spilling interlocking protective device in background technology.
Fig. 2 is mercury switch schematic diagram.
Fig. 3 be upper oil filling riser when inserting and not inserting tendency change schematic diagram (dotted line refers to that oil filling riser does not insert state in tank car).
Fig. 4 is the schematic diagram of the oil spilling interlocking protective device in embodiment.
Fig. 5 is that the mercury switch in embodiment is connected in series and triggers interlocking interconnecting wiring diagram with oil spilling interlocking protective device.
Fig. 6 is that the mercury switch in embodiment is connected in series not triggering interlocking interconnecting wiring diagram with oil spilling interlocking protective device.
Label declaration: the K1-glass container K2-electrode K3-K4-mercury α-inclination angle that goes between;
1-static oil spill protector 2-hair oil lower computer 3-wire fuse 4-intermediate relay 5-mercury switch 6-oil filling riser 7-oil-containing groove 8-truck tanker.
The specific embodiment
Mercury switch principle of work: mercury switch, claim again roll-over switch, be the one of contactor, storing a droplet mercury K4, most inert gas injectings or vacuum in glass container K1 with a small and exquisite glass container K1 who follows electrode.Because the relation of gravity, the mercury K4 globule can be with local diffluence lower in glass container K1, if touch two electrode K2 simultaneously, just switch can be by closing of circuit, opening switch, as Fig. 2.
In order to evade people's unsafe acts; save cost of human resources; intensifier safety performance; the transformation of upper dress oil filling riser has been carried out to feasibility study; adopt automation fender guard; on original overflow protector, be connected in series a mercury switch and relay, mercury switch is fixed on the long-armed front end of oil filling riser.
As shown in Fig. 3-6, oil filling riser oil spilling interlock control apparatus in one, this device not only comprise the control loop being formed by static oil spill protector 1 and hair oil lower computer 2, also comprise wire fuse 3, intermediate relay 4 and mercury switch 5, one end of described wire fuse 3 is connected with positive source+24 of PLC controller, the other end of described wire fuse 3 is connected with the first terminals of the coil of intermediate relay 4, the second terminals of the coil of described intermediate relay 4 are connected with the first pin of the mercury switch 5 of often opening, the second pin of described mercury switch 5 is connected with the common terminal com of PLC controller, described mercury switch 5 be fixed on oil filling riser 6 long-armed on, the signal input part of described static oil spill protector 1 is connected with the first open contact of intermediate relay 4, the signal input part of described hair oil lower computer 2 be connected with the second open contact of intermediate relay 4, the ground terminal of described static oil spill protector 1 and hair oil lower computer 2 ground terminal be connected.Described mercury switch 5 is installed in anti-explosion terminal box, and described anti-explosion terminal box is fixed on the long-armed front end of oil filling riser through larynx hoop.Described intermediate relay 4 and wire fuse 3 are fixed in lower computer explosion-proof tank.
For the transformation of the control system in a Geju City; if old control system comprises the control loop being made up of static oil spill protector and hair oil lower computer; the signal end that is static oil spill protector and hair oil lower computer interconnects, and the ground terminal of static oil spill protector and hair oil lower computer interconnects simultaneously.Three of technical scheme of the present invention is: a kind of construction procedure of upper oil filling riser oil spilling interlock control apparatus, carry out according to the following steps:
(1) mercury switch is installed in anti-explosion terminal box, and draws two wires, be respectively the first leads ends and the second leads ends, adopt larynx hoop that anti-explosion terminal box is fixed on to the long-armed front end of oil filling riser, and make mercury switch in normally open;
(2) the first leads ends of mercury switch is connected with the second terminals of the coil of intermediate relay, the second leads ends of mercury switch is connected with the common terminal of PLC controller;
(3) positive source of PLC controller is connected with one end of wire fuse, the wire fuse other end is connected with the first terminals of the coil of intermediate relay;
(4) original static oil spill protector and the interconnective signal wire (SW) of lower computer are disconnected, the a pair of open contact of intermediate relay is concatenated between electrostatic oil spilling device and lower computer, the first open contact by intermediate relay is connected with electrostatic oil spilling fender guard, and the second open contact of intermediate relay is connected with hair oil lower computer;
(5) wiring place is wrapped with insulating tape, prevent that the end of a thread is exposed and cause short circuit;
(6) intermediate relay, wire fuse be placed in lower computer explosion-proof tank and fix.
In the time that oil filling riser is not inserted into truck tanker, the contact of mercury switch is in normally open, intermediate relay is adhesive not, no matter whether upper oil filling riser oil spilling interlock control apparatus is at interlocking position (considering truck tanker electrostatic grounding protection device) herein by normal ground connection, all can trigger chain reaction, pump cannot turn round, and electromagnetic valve cannot be opened, hair oil is forced to suspend, and has avoided oil spill accident generation; When oil filling riser is inserted into after truck tanker; mercury switch is because variation has occurred oil filling riser tendency; make the mercury switch closing of contact; and trigger action relay adhesive, if now go up oil filling riser oil spilling interlock control apparatus in non-interlocked state, whole interlocking protective system is removed interlocking (truck tanker electrostatic grounding protection device being considered by normal ground connection) herein; pump running; electromagnetic valve is opened, and normal hair oil, as Fig. 3 and Fig. 4.If now oil spilling device is at Interlock Status, whole interlocking protective system is still at Interlock Status.In the time that oil filling riser does not insert, level switch and oil spilling device serial connection trigger Interlock Status, and interconnecting wiring diagram is as Fig. 5.In the time that oil filling riser inserts, remove Interlock Status, interconnecting wiring diagram is as Fig. 6.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes specification sheets of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.