CN2050120U

CN2050120U - High-efficient energy-saving electromagnetic valve

Info

Publication number: CN2050120U
Application number: CN 89203823
Authority: CN
Inventors: 张家政
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-03-31
Filing date: 1989-03-31
Publication date: 1989-12-27

Abstract

The utility model relates to the improvement of an electromagnetic valve. An optimal magnetic circuit structure is designed on the basis of the elementary structure of the original electromagnetic valve, and an excitation coil is winded on a three-section magnetic conductive material frame. A unique magnetic path is composed of a frame, a yoke, and an armature iron, and thus, the magnetic force line is effectively utilized. An automatic switchover electric circuit for starting current and holding current is designed between the excitation coil and the external power supply to greatly reduce the electric quantity loss of the electromagnetic valve with copper material saving and volume reducing, and the utility model is an item worth of generalization.

Description

High-efficient energy-saving electromagnetic valve

The utility model belongs to the valve of electromagnetic start, and specifically it relates to a kind of improved high efficiency energy-conserving electromagnetic valve.

Electromagnetic valve is widely used in remote control, the automatic pipeline switch.Especially along with the development of managing with industrial automation of popularizing of industrial or agricultural computer, the electromagnetic valve application area more and more widely.Particularly, also more and more higher to the consumption and the requirement of solenoid valve in industries such as oil, chemical industry, pharmacy, papermaking.It is important executive component in the automatic control process.Iron rank, volume iron, field coil that the structure of tradition electromagnetic valve comprises valve body, valve seat, valve rod substantially, colludes shellfish, links to each other with valve rod, coil rack, critical pieces such as coil case are combined by fastening piece and seal washer with upper-part and to be constituted one and open the Electromagnetic Drive valve that falls to colluding shellfish with the exciting curent break-make.Also have separation sleeve between coil and volume iron or the armature in most electromagnetic valve structures, then in coil, constituted flux path, will waste the magnetic line of force greatly undoubtedly as adopting ferromagnetic material.If the employing NULL also will certainly reduce magnetic intensity and causes energy waste.In the practice, for the opening degree that guarantees valve designs big spacing is arranged between armature and volume iron, this need just to have determined a bigger inrush current.After adhesive, this inrush current also can not reduce, and the electric current of actual sustain adhesive is much smaller than inrush current.This has just caused the unhelpful of electric energy to expend.And copper wires also expends very greatly, bulky, thereby causes the solenoid valve cost higher.How to improve the solenoid valve design, its raw materials consumption is reduced, power consumption reduces the concern that has been subjected to the expert.Its improvement project emerges in an endless stream.In the Patent Office of the People's Republic of China disclosed " economize on electricity solenoid valve " (CN 87205710U) a kind of improvement project is just proposed, it has adopted a mechanical type self-locking mechanism, and cutting off the electricity supply simultaneously at pinning valve rod under the solenoid valve attracting state works valve under no current state.Starting another coil during throttle down opens self-locking valve rod is fallen.Undoubtedly its power savings is fairly obvious, and still, this project organization complexity easily goes out mechanical failure, but also needs a cover to add control apparatus, has increased and has made and the difficulty of using." the energy-saving electromagnetic valve " of the Decree of Patent Office of China is another kind of improvement project (CN87209941U), is actually with a kind of design, only changes the mechanical type self-locking into the permanent magnet locking.Its result still causes structure complicated, also needs an instantaneous starting power supply and reverse electrical source.This is very inconvenient to the user.More than the solenoid valve design general layouts that all do not break traditions of two kinds of designs, exist bigger space or magnet short-cut path between moving armature and the coil, even thereby the instantaneous still power consumption of its inrush current is very big, and the occasion that is applied in frequent starting is still a fairly obvious defective.

The purpose of this utility model is to simplify or do not change basically a kind of high-efficiency, energy-conserving and electromagnetical valve that makes full use of inrush current power and realize keeping current switching automatically of design under the prerequisite of original structure design, to reduce raw materials consumption, save electric energy and obviously reduce volume.

Crucial design of the present utility model is at first to solve on the structure problem that the magnetic line of force that field coil produces makes full use of.This just requires should not adopt NULL to do skeleton between field coil and volume iron, armature, to reduce the decay in magnetic field.But can not adopt permeability magnetic material to do skeleton, otherwise can form the other short circuit of the magnetic line of force.So, in the utility model, adopt the three-sectional coil skeleton structure, be to separate with NULL in the middle of upper and lower two-part are formed with permeability magnetic material, so just guaranteed the unique permeability magnetic material path in the field coil that volume iron, armature constitutes under attracting state, can make full use of the magnetic line of force, improve efficient.Another key of the design is to have designed automatically inrush current is switched to the diverter circuit of keeping electric current.After the power connection, this circuit allows a bigger inrush current to pass through outside, in case valve opening, the armature adhesive then automatically switches to a less electric current of keeping and keeps valve opening state.Can significantly reduce power consumption, consumptive material like this, and identical with installing and using of conventional valves, but produce positive effect.

How further specify the purpose of this utility model below in conjunction with embodiment's accompanying drawing realizes.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is diverter circuit embodiment 1

Fig. 3 is diverter circuit embodiment 2.

Fig. 4 is diverter circuit embodiment 3.

Fig. 5 is diverter circuit embodiment 4.

Wherein 1 is the temperature resistant encapsulation packing ring, and 2 is the magnetic conduction part of coil rack, and 3 is field coil, and 4 is shell, 5 be coil rack every the magnetic part, 6 is coil covering, 7 is thermal insulating pad, 8 is sealing gasket, 9 is valve seat, and 10 is valve body, and 11 is heat-resistant seal gasket, and 12 are the retaining pad, 13 is spring clamp, and 14 is screw, and 15 is upper press cover, and 16 is volume iron, 17 is terminal box, and 18 is armature, and 19 is guide pin bushing, and 20 is spring clamp, 21 valve rods, 22 is heat resistant pad, and 23 for colluding shellfish, and 24 is the diverter circuit plate.

As can be seen from Figure 1, the design has a new-type magnetic Circuit Design.Because coil rack is divided into two-part up and down every magnetic part 5, then portion does not just have the permeability magnetic material path in coil, and the magnetic line of force concentrates between armature 18 and the volume iron 16 through the magnetic conduction part 2 of skeleton.Formed unique permeability magnetic material path in the field coil at attracting state lower coil skeleton and armature 18, volume iron 16, so under the requirement with equimagnetic tractive force, design of the present utility model just can be with less exciting curent.In order to guarantee the optimum state of this design, should reduce the air air gap between coil rack 2 and volume iron 16, the armature 18 as far as possible, volume iron 16 can adopt direct contact, and armature should adopt being slidingly matched of minimum clearance.

It can also be seen that from Fig. 1 field coil 3 does not communicate with external power simply, also be provided with a diverter circuit plate 24, the effect of this piece plate is that diverter circuit is set, and the realization inrush current automatically switches to keeps electric current.

The embodiment of the diverter circuit that Fig. 2, Fig. 3 provide has a common characteristic, be that field coil 3 links to each other with external power by diverter circuit, diverter circuit has an inrush current path, keep current path for one, the diverter circuit of an inrush current and be connected across field coil B ₁The fly-wheel diode at two ends.

A controllable silicon diode CT, field coil B are arranged in the inrush current path in embodiment's 1 circuit ₁Be connected on the external power by this controllable silicon, keep current path and be one by step-down transformer B and a bridge rectifier (D ₄-D ₇) form, be connected across field coil B ₁And between the external power.Cut off circuit and be one by triode BG ₁Form rechargeable delay switching circuit.Its output terminal is connected on the trigger electrode of controllable silicon diode CT.Behind the power connection, cut off circuit and be in conducting voltage of on state supply controllable silicon.Power supply offers a big inrush current after rectification.Along with capacitor C ₁Current potential improve BG rapidly ₁End; The blocking-up of controllable silicon diode, inrush current cuts off rapidly.This moment, solenoid valve was in attracting state, by bridge rectifier (D ₄-D ₇) a less opening state of keeping the electric current maintaining valve is provided.Once supply disconnecton is kept current interruptions, valve rod breaks away to fall by deadweight, valve closing.Inrush current only keeps the extremely short time in the whole process, thereby greatly reduces power consumption.

Embodiment 2 has provided the another kind design of diverter circuit, and the inrush current path here is to have replaced thyristor among the embodiment 1 with the positive temperature rise resistivity of a PTC thermosensitive element t.Because PTC element self characteristics, its resistance is very little after just connecting power supply, can the short time pass through a big inrush current.Along with PTC element heating resistance sharply rises inrush current is descended rapidly, realized the cut-out of inrush current.Thereby can omit additional delay switch type in the present embodiment and cut off circuit.The design and implementation example 1 of holding circuit is identical, by a transformer B ₂Form with a bridge rectifier D.The characteristics of this circuit are that circuit is simple, its inrush current path and cut off circuit and be integrated, and reduced volume greatly, but PTC components consume certain power, it is not again the design's shortcoming thoroughly that inrush current cuts off.

Embodiment 3 and embodiment 4 provide the diverter circuit design of another kind of characteristics.Its main feature is that field coil is divided into three parts and (N on the same coil rack ₁, N ₂, N ₃).N ₂, N ₃The number of turns identical, all also go up a diode (D ₉, D ₁₀), being operated in opposite half-wave respectively, its average current promptly is that solenoid valve is in the electric current of keeping under the opening state, such design can realize all-wave work, reduces noise, raise the efficiency.N ₁Adopt the multi-turn number, high induction reactance design.

In embodiment 3, coil N ₁Be connected across both ends of power, N ₂Then by bidirectional triode thyristor DT(unidirectional also can) be connected across both ends of power.The silicon controlled trigger electrode is connected on by BG ₂The rechargeable delay switching circuit output terminal of forming.Behind the power connection, controllable silicon is on state, N ₂In by inrush current, adhesive armature 18 drives solenoid valves and opens.Along with BG ₂Turn off thyristor DT turn-off, N ₂Only rely on N ₁The electric current that induction is come is kept attracting state.

The circuit that embodiment 4 is given is consistent with embodiment's 3 basic designs, and wiring is slightly different.N ₂, N ₁Be connected across on the power supply after the series connection.N ₁Be connected across a bidirectional triode thyristor DT ₁, its trigger electrode also is connected on the output terminal of a rechargeable delay switching circuit.The process of its work is identical with enforcement 3.

More than two embodiments' main feature be to have omitted the transformer in the diverter circuit, the terminal box 17 among the design is dwindled greatly, cost reduces.Can also replace thyristor among the

embodiment

3,4 with a positive temperature rise coefficient thermosensitive element of PTC, can further omit delay switching circuit like this, circuit is further simplified, and volume further dwindles, even omits terminal box 17 diverter circuit is designed within shell 4.

By the above sample that manufactures and designs, its electromagnet portion volume can reduce 1/3-1/2, saves permeability magnetic material more than 50%, saves copper wires more than 60%.According to the experiment of actual contrast groups, under same working environment, compare and can save power consumption more than 90% with existing standard solenoid valve series product, therefore, its overall efficiency indicator is higher, and it is applied and will be the society's saving great deal of raw materials and the energy.

Claims

1, a kind of valve body 10 that comprises, valve seat 9, valve rod 21, collude shellfish 23, the armature 18 that connects together with valve rod, volume iron 16, coil rack 2, field coil 3, can 4, and a kind of high-efficiency, energy-conserving and electromagnetical valve of combining by fastening piece and seal washer, its feature is that also field coil 3 is wound on a middle NULL 5 of using, be divided into, down on the two-part magnetic conduction skeleton, armature 18, volume iron 16 forms the closed permeability magnetic material path in the field coil 3 under attracting state, be provided with automatic change inrush current and the diverter circuit 24 of keeping electric current in the overall structure.

2, high-efficiency, energy-conserving and electromagnetical valve according to claim 1 is characterized in that coil rack 2 and volume iron 16, directly contacts or form slip cooperating relationship between the armature 18.

3, according to the high-efficiency, energy-conserving and electromagnetical valve of claim 1, it is characterized in that the diverter circuit between field coil 3 and the external power is made up of four parts:

(1) inrush current path,

(2) keep current path,

(3) inrush current cuts off circuit,

(4) be connected on the fly-wheel diode at excitatory line two ends.

4, according to claim 1 or 2 or 3 described high-efficiency, energy-conserving and electromagnetical valves, it is characterized in that having in the inrush current path a controlled silicon diode CT, field coil B ₁Series connection with it is connected across on the external power, keeps current path by a step-down transformer B, bridge rectifier (D ₄-D ₇) form, be connected across field coil B ₁And between the external power, cut off circuit by a triode BG ₁The rechargeable delayed type switching circuit of forming is formed, and its output terminal is connected on the trigger electrode of controllable silicon CT.

5, according to claim 1 or 2 said high-efficiency, energy-conserving and electromagnetical valves, it is characterized in that inrush current path system in the diverter circuit is by the field coil 3 positive temperature rise coefficient thermosensitive element of the PTC t that connected, itself be again the inrush current automatic shutdown circuit, the current path of keeping of diverter circuit then is made up of the whole device D of a bridge-type and is connected across between field coil 3 and the external power.

6,, it is characterized in that field coil 3 forms (N by three parts according to the said high-efficiency, energy-conserving and electromagnetical valve of claim 1 ₁, N ₂, N ₃) coaxial and around, N ₂With N ₃The number of turns is identical, all also goes up a diode D ₉, D ₁₀, N ₂, N ₃Being operated in its average current of opposite half-wave respectively is that solenoid valve is in the electric current of keeping under the attracting state.

7, according to the said high-efficiency, energy-conserving and electromagnetical valve of claim 5, it is characterized in that coil N ₁The cross-over connection both ends of power, N ₂By two-way (also can be a unidirectional) controllable silicon CT ₁The cross-over connection both ends of power, silicon controlled trigger electrode and BG ₂The output terminal that is barricaded as delay switching circuit links to each other.

8, according to the said high-efficiency, energy-conserving and electromagnetical valve of claim 5, it is characterized in that N ₁With N ₂Series connection is connected across power end, at N ₁Two-way (or unidirectional) controllable silicon of two ends cross-over connection DT ₁, silicon controlled trigger electrode and BG ₃The output terminal of the delay switching circuit that is barricaded as links to each other.

9,, it is characterized in that the thyristor in the diverter circuit can replace with the positive temperature rise resistivity of a PTC thermosensitive element according to claim 6 or 7 or 8 said high-efficiency, energy-conserving and electromagnetical valves.