CN202972128U - Electric control device for normally-closed gas safety electromagnetic valve with high power factor - Google Patents

Abstract

The utility model discloses an electric control device for a normally-closed gas safety electromagnetic valve with a high power factor. The electric control device comprises a delay switching device and a switch gear which are connected between a higher level control device power supply and a valve load, and are connected in series with each other; a capacitive voltage reducing device and a full-wave rectification device are further connected between the higher level control device power supply and the valve load; the input end of the capacitive voltage reducing device and the input end of the delay switching device are electrically connected to the higher level control device power supply; and the output end of the capacitive voltage reducing device and the output end of the switch gear are connected to the valve load through the full-wave rectification device. By the adoption of the electric control device, the full-wave rectification device is arranged, and power is supplied to the valve load in a full direct current way, so that the defect that heat is generated due to the electric induction generated between a working coil and an iron core as well as a shell, and the vortex mutual inductance ring current generated by an outer shell can be eliminated, the power factor and the suction torque of the electromagnetic valve are increased greatly, the electric control device runs stably, energy is saved, and power consumption is lowered.

Description

The normal close type fuel gas safe electromagnetic valve electric controller that power factor is high

Technical field

The utility model relates to normal close type fuel gas safe electromagnetic valve electric controller, relates in particular to the high normal close type fuel gas safe electromagnetic valve electric controller of a kind of power factor.

Background technique

Along with the needs that domestic production, living facilities automation are controlled, many producers are just from external introduction normal close type fuel gas safe electromagnetic valve before the several years.For the nationalization part producer that realizes this serial solenoid valve has carried out development after equipment is introduced, but show through market survey no matter these series product are that import or the domestic running coil (valve load) that all exists generate heat, running temperature is high, coil burns out, and causes the phenomenon of wire short-circuiting.Have a strong impact on gas burning system and normally produced, serious more can cause living gas explosion accident, had major safety risks.In the design of this type of valve, all can occur because actuating coil produces electric induction with iron core and housing, thereby frame produced the phenomenon that eddy current mutual inductance circulation produces heat in the past.

The model utility content

In view of this, technical problem to be solved in the utility model is: a kind of coil not easy burn-out and the high normal close type fuel gas safe electromagnetic valve electric controller of power factor are provided.

In order to achieve the above object, the utility model adopts following technological scheme to realize:

the normal close type fuel gas safe electromagnetic valve electric controller that a kind of power factor is high, comprise and be connected between higher level's control gear power supply and valve load and the delay switching device and the switch gear that are one another in series, wherein, also be connected with capacitance decompression device and full-wave fairing attachment between described higher level's control gear power supply and valve load, the input end of described capacitance decompression device and the input end of described delay switching device are electrically connected at described higher level's control gear power supply, the output terminal of described capacitance decompression device and the output terminal of described switch gear are connected in described valve load by described full-wave fairing attachment.

As shown from the above technical solution, the beneficial effects of the utility model are:

Compared to existing technology, the utility model is by being provided with full-wave fairing attachment, with the mode of full direct current to the valve load supplying, can eliminate this actuating coil and produce electric induction with iron core and housing, and thereby frame produces the defective that eddy current mutual inductance circulation produces heat, make power factor and solenoid valve inhale journey moment and be much improved, it is stable and energy-saving and cost-reducing.

Description of drawings

Fig. 1 is circuit theory schematic diagram of the present utility model.

Fig. 2 is circuit theory one-line schematic diagram of the present utility model.

Fig. 3 is the structural representation of the utility model when being installed on solenoid valve.

Fig. 4 is the local structure for amplifying schematic diagram at A place in Fig. 3.

1, capacitance decompression device; 2, full-wave fairing attachment;

3, switch gear; 4, delay switching device;

5, temperature switch device; 6, valve load;

7, control circuit board.

Embodiment

In order to make those skilled in the art can further understand feature of the present utility model and technology contents, see also following about detailed description of the present utility model and accompanying drawing.

see also Figure 1 and Figure 2, the utility model provides a kind of power factor high normal close type fuel gas safe electromagnetic valve electric controller, comprise and be connected between higher level's control gear power supply and valve load 6 and the delay switching device 4 that is one another in series and switch gear 3, wherein, also be connected with capacitance decompression device 1 and full-wave fairing attachment 2 between described higher level's control gear power supply and valve load 6, the input end of the input end of described capacitance decompression device 1 and described delay switching device 4 is electrically connected at described higher level's control gear power supply, the output terminal of the output terminal of described capacitance decompression device 1 and described switch gear 3 is connected in described valve load 6 by described full-wave fairing attachment 2.

specifically, the most preferred mode of execution of the utility model sees also Fig. 1 and shown in Figure 4, comprise the temperature switch device 5 that is connected between higher level's control gear power supply and valve load 6 and connects successively each other, delay switching device 4 and switch gear 3, also be connected with capacitance decompression device 1 between described higher level's control gear power supply and valve load 6, the input end of the input end of described capacitance decompression device 1 and described temperature switch device 5 is electrically connected at described higher level's control gear power supply, the output terminal of the output terminal of described capacitance decompression device 1 and described switch gear 3 all is connected in described valve load 6 by full-wave fairing attachment 2.As preferably, described capacitance decompression device comprises capacitor C 1 and is connected in parallel on resistance R 1 on capacitor C 1, and described delay switching device 4 is vibration able to programme/timer circuit device, and described switch gear is the controllable silicon contactless switching device.The utility model can be arranged on capacitance decompression device, full-wave fairing attachment, switch gear and delay switching device on a control circuit board 7.As shown in Figures 3 and 4, the mounting point of control circuit board 7, and the mounting point of temperature switch device and coil (valve load).

The following explanation respectively of concrete each Unit Design control module:

1, adopt the capacitance decompression device:

Conventional step-down is the resistance step-down, half-wave step-down etc., but native system adopts capacitance decompression.Its advantage is exchange stopping direct current logical according to electric capacity, with capacitive reactance, with the principle of the couplings such as load impedance, adjusts optimum operation voltage with the size of Capacity.Simultaneously capacitance decompression has also been evaded the defective of the loss electric energy heating that other step-down modes such as resistance cause.

2, take full-wave fairing attachment:

In the design of this type of valve, all can occur because actuating coil produces electric induction with iron core and housing, thereby frame produced the phenomenon that eddy current mutual inductance circulation produces heat in the past.The present takes the mode of full direct current can eliminate this defective, makes power factor and solenoid valve inhale journey moment and is much improved.

3, take the controllable silicon contactless switching device to switch startup:

After taking the controllable silicon contactless switching device to switch startup, through capacitance decompression, guarantee low voltage power supply, thereby eliminated the explosive harm in gas facility of switching due to the wrong point of relay that the spark that produces brings.This shows, adopt controllable silicon to switch more reliable than relay switch.

4, take delay switching device:

This device is during this control starts, the full voltage power supply to be converted to the core of capacitance decompression power supply.This device energising can timing automatic be closed the 8th pin current potential after driving valve, namely turns low potential.Make the controllable silicon trigger voltage close, thereby impel controlled outage to transfer the valve low voltage power supply to.When guaranteeing best low voltage, the operation of little electric current small-power, also obtained best power savings.

5, temperature switch device:

Temperature switch device is this valve automatical control system safety protection device.In case automatical control system is malfunctioning, or other reasons causes valve winding heating, and its thermal switch can cut off automatically from the external control power supply, and auto-breaking closes valve, thereby has played the self diagnosis protective function.Meanwhile carry the switching value signal to upper level, notify the higher level to post a letter or participate in controlling.

6, adopt hermetically sealed modular designs:

This device is in order to eliminate the phenomenon that exposes of gas facility electricity consumption, and the spy adopts hermetically sealed design, thereby has eliminated because of the generation that electrical spark causes the accidents such as gas explosion that electrical equipment produces.

Its working principle is as follows:

When solenoid valve need leave the valve startup, during by higher level's control gear input AC 220v voltage, wherein control system was through U1-8 output high petential, through Q1, V2 controllable silicon VTH2 conducting C1 electric capacity short circuit, through the full wave rectifier of D2 bridge heap, make electromagnetic valve coil get the full voltage DC electrical source, electric valve is opened.This moment is for stablizing valve iron-core coil open mode, through the action of No. 8 pin output low potential V2 photoelectricity of U1 time-delay 10 second time (adjustable), the VTH2 controllable silicon is closed, this is through the C1 capacitor step-down, the D1 full wave rectifier makes valve winding transfer low voltage to, little electric current keeps normal operation, to arrive the optimum operation power rating.This figure forms the temperature control self-diagnosis system by CK1, CK2, being embedded in coil inside or valve housing inwall takes the circumstances into consideration to set, when its running temperature of the malfunctioning coil fault of valve control is abnormal, its CK1, CK2 be output switch amount signal at once, in time outside throttle down, impel the higher level to cut off the power supply and signal the switching value signal simultaneously, guarantee system's security of operation.

Solenoid valve test data after former solenoid valve data and this control module newly developed of utilization contrasts as following table:

Technical performance and Economic and Efficiency Analysis:

1, technical performance

Use actual conditions as can be known from test data and current each user, this series of valves product technical performance after this design improvement obviously improves.

Concrete following some explanation:

This novel valve running current significantly descends, and power consumption significantly descends, and energy-saving effect is obvious, and the valve power consumption after improvement is original sixth.

Because electric current significantly descends, its running temperature also is down under the normal temperature state and is moved, and operational safety significantly strengthens thus, frequently burns coil hidden danger and thoroughly eliminates, and coil extends working life, and safe handling property obtains Reliable guarantee.

Because running temperature is normal temperature, its valve increases substantially working life.

2, economic benefit and social benefit

This research and development of products success is a contribution greatly to country, society, enterprise.Make a concrete analysis of as follows:

Energy-saving benefit is obvious:

Former valve: operating voltage 220Vac, operating current 1.26A, power consumption 236W,

After improvement: operating voltage 220Vac, operating current 0.18A, power consumption 40W,

Its loss power minimizing value: 236-40=196W

Annual operation can be economized on electricity: 196W * 24 hour * 365 days=1716.96KWh.

Therefore, final statistic is very large, and the economic benefit of visible energy-saving consumption-reducing is huge.

(2) Safety performance improves

From the security standpoint analysis, the running temperature extra-high-speed of former valve burns out coil and happens occasionally.This is a large serious potential safety hazard at gas burning system.

In case coil temperature is too high to be burnt out on fire to be exactly a major accident, now to eliminate this hidden danger, guarantee safety, also produced immeasurable intangible benefit.

But the above is only better possible embodiments of the present utility model, is not to limit to the scope of the claims of the present utility model, therefore the equivalent structure that all utilization the utility model specifications and accompanying drawing content are done changes, all in like manner is included in scope of the present utility model.

Claims (1)

1. normal close type fuel gas safe electromagnetic valve electric controller that power factor is high, comprise and be connected between higher level's control gear power supply and valve load and the delay switching device and the switch gear that are one another in series, it is characterized in that, also be connected with capacitance decompression device and full-wave fairing attachment between described higher level's control gear power supply and valve load, the input end of described capacitance decompression device and the input end of described delay switching device are electrically connected at described higher level's control gear power supply, the output terminal of described capacitance decompression device and the output terminal of described switch gear are connected in described valve load by described full-wave fairing attachment.

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