CN2326955Y

CN2326955Y - Ash-dropping device for micro-wave carbon-detection system of large boiler

Info

Publication number: CN2326955Y
Application number: CN 98203757
Authority: CN
Inventors: 叶宝荣
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-04-29
Filing date: 1998-04-29
Publication date: 1999-06-30
Anticipated expiration: 2008-04-29

Abstract

The utility model relates to an ash-dropping device for a micro-wave carbon-detection system of a large boiler, which is composed of an ash deposition pipe, an electromagnetic valve and a controlling circuit. But the electromagnetic valve is composed of a valve body, a needle-shaped valve core, a valve sleeve, an elastic seal sleeve and an electric magnet. The electric magnet is axially installed at the outlet of the ash deposition pipe via the valve sleeve and the valve body. The needle-shaped valve core opposite to the outlet of the ash deposition pipe is fixed to the front end of the electromagnet yoke. The upper opening of the elastic seal sleeve is connected with the axis of the valve core hermetically, and the lower opening is connected with the valve sleeve hermetically. The valve body is also provided with an air inlet pipe and an ash discharging pipe, and the air inlet pipe and the ash discharging pipe are respectively provided with an air inlet valve, and an ash discharging valve. The environment can not be polluted, and the work is stable and reliable.

Description

Large-sized boiler microwave carbon determination system grey device down

The utility model relates to large coal-fired boiler, with a kind of apparatus for ash down of microwave carbon determination system adapted.

National new product, microwave carbon determination system are used for large coal-fired boiler, and the continuous monitoring unburned carbon in flue dust is adjusted intake and fineness of pulverized coal, makes fuel perfect combustion, improves ' eight or five ' key popularized project of unit operation economy.At present and the following grey device of microwave carbon determination system adapted, by the dust stratification pipe, electromagnetic valve and the assembling of control circuit three parts constitute, the dust stratification pipe is connected the lower end of microwave carbon determination system ash discharging pipe with flange, electromagnetic valve is by vavle shelf, lever, the needle valve core, electromagnet and weight constitute, vavle shelf is fixed on the corresponding position of dust stratification pipe, the fulcrum of lever is connected with vavle shelf, the needle valve core is fixed on an end of lever, relative with the outlet of dust stratification pipe, magnet spool is fixedlyed connected with vavle shelf, fixedly connected with the force of lever in the lower end of yoke, weight is lifted on the place, force of lever; Its control circuit adopts AC220V control, mainly partly constitute by being arranged on condenser type pole piece in the microwave carbon determination system ash inlet tube and controllable silicon amplifying circuit etc., the output terminal of amplifying circuit is connected with magnet coil, when rising to certain position for grey, ash is arranged between pole piece, the electric capacity quantitative change is big, amplifies through amplifying circuit, and solenoid is charged, electromagnetic actuation, by lever valve is opened, ash freely falls from the needle valve door, drains into down in the grey pallet; When grey potential drop was following to pole piece, electric capacity diminished, coil losing electricity, and electromagnet discharges, and under the effect of weight, by lever needle valve is closed, and stops ash discharge.The deficiencies in the prior art part mainly is: 1, ash is directly entered in the ash-pan on atmosphere ground, flying dust four is raised, contaminated environment; 2, Gong Zuo stability and reliability is poor, in the microwave carbon determination system ash discharging pipe is negative pressure, directly discharges in atmosphere, is subjected to the atmospherical drag effect, often cause a large amount of dust stratifications in the pipe, ash is compacting in pole piece place or ash releasing tube easily, and the lighter's ash discharge is not smooth, the stifled ash of weight person, often cause deadlock, cause system normally to move, usability is not good enough, and maintenance is big and difficult; For this reason, have on ash releasing tube, install additional mechanical vibrator, but stifled grey, still often generation of deadlock phenomenon can not tackle the problem at its root.

The purpose of this utility model is to avoid weak point of the prior art, and provides a kind of pollution-free, stable and reliable operation large-sized boiler microwave carbon determination system grey device product down.

Can take following technical scheme to realize purpose.This large-sized boiler microwave carbon determination system grey device down, still by the dust stratification pipe, electromagnetic valve and the assembling of control circuit three parts constitute, but electromagnetic valve is by valve body, the needle valve core, valve pocket, elastic seal cartridge and electromagnet constitute, electromagnet passes through valve pocket, valve body axially is installed in the exit of dust stratification pipe, the needle valve core relative with the outlet of dust stratification pipe is fixed on the front end of electromagnet yoke, suitable for reading and the poppet shaft of elastic seal cartridge is tightly connected, end opening and valve pocket are tightly connected, also be provided with air intake on the valve body, ash releasing tube, air intake, air intake is housed respectively on the ash releasing tube, the ash discharge valve.Make grey device product under the vacuum suction and discharge formula.

Under the prerequisite that satisfies the said structure requirement, as for the specific constructive form of large-sized boiler microwave carbon determination system with the integral body of descending grey device, each funtion part, each zero member, the mode that is connected and fixed between member, position relation etc., all can be according to using needs, take the circumstances into consideration to set, they can both realize purpose, guarantee this large-sized boiler microwave carbon determination system usability and the effect of grey device down.

The relative prior art of the technical program has following advantage and effect:

Free from environmental pollution, ash is delivered to by ash releasing tube and is specified the place, and free from dust is flown upward, and belongs to environmentally friendly machine; Working stability, reliable has had air intake, ash releasing tube road facility, and ash discharging valve mouth place is a negative pressure, makes ash discharge very unobstructed, has fundamentally eliminated stifled ash, deadlock phenomenon, can guarantee unit safety, economical operation, and usability is good, and is easy to maintenance, simple.

In conjunction with the accompanying drawings, embodiment is described in further detail the content of the technical program.

Fig. 1 is large-sized boiler microwave carbon determination system a kind of structural representation of grey device down;

Fig. 2 is the electrical schematic diagram of following grey device control circuit.

Among the following grey device embodiment of the microwave of large-sized boiler shown in accompanying drawing carbon determination system usefulness, dust stratification pipe 1 also is connected the lower end of microwave carbon determination system ash discharging pipe with flange, but aciculiform spool and electromagnetic valve are installed under the dust stratification pipe, on the same axis of dust stratification pipe, promptly by valve body 2, needle valve core 3, elastic seal cartridge 4, the electromagnetic valve that valve pocket 5 and electromagnet 6 constitute, magnet coil and valve pocket are fixed, valve pocket is with screw thread and valve body, valve body with screw thread and dust stratification tubular axis to the exit that is installed in the dust stratification pipe, the needle valve core relative with the outlet of dust stratification pipe is fixed on the front end of electromagnet yoke, suitable for reading and the poppet shaft of elastic seal cartridge is tightly connected, end opening and valve pocket are tightly connected, also be provided with blast pipe 7 on the valve body, ash releasing tube 8, air intake, air intake is housed respectively on the ash releasing tube, the ash discharge valve.Magnet coil gets when electric, and yoke, spool are inhaled down, ash discharge; During the magnet coil dead electricity, under the effect of elastic seal cartridge, valve closing.Owing to corresponding air intake, ash discharge pipeline are arranged on the valve body, make dust inlet be in negative pressure state, when ash is arranged following time from the aciculiform spool, gravity strengthens, siphoned away by negative pressure rapidly, the workspace and around, all very clean, agile.Elastic seal cartridge removes as return unit, and simultaneously, it in order to prevent that flying dust from entering between yoke and the valve pocket, prevents to be stuck again, makes electromagnetic valve be stablized, work reliably.

Control circuit of grey device is mainly by induction type transformer BK-25 under this, silicon bridge MICRS401, the mu balanced circuit that integrated regulator BG1 LM7824 and capacitor C 2, C3 are linked to be and noninductive touch switch LJ1, LJ2, relay J 1, J2 constitute, LJ1 and J1, LJ2 be connected in parallel on circuit output end of pressure-stabilizing after J2 is connected in series, the normally opened contact of J1 is arranged on the circuit between silicon bridge output terminal and magnet coil, and the normally closed contact of J2 is arranged on the circuit between silicon bridge one output terminal and J1 normally opened contact; LJ1, LJ2 are installed in high ash position in the microwave carbon determination system ash inlet tube, place, low ash position respectively.Transformer is converted to the 36V safe voltage with 220V, adopts mu balanced circuit to improve power supply stability, makes switch LJ1 action more reliable; The K1K2 earth leakage protective device is housed in the circuit, in case electric leakage, total system is cut off the power supply automatically.When breaking down for anti-locking system relay charged for a long time, burn out solenoid valve, the holding circuit that is made of LJ2, J2 is set, LJ2, J2 in time move when having an accident, and make the device outage.

The usability of accompanying drawing illustrated embodiment, result of use are good.

Claims

1, a kind of large-sized boiler microwave carbon determination system grey device down, by the dust stratification pipe, electromagnetic valve and control circuit constitute, it is characterized in that: electromagnetic valve is by valve body, the needle valve core, elastic seal cartridge, valve pocket and electromagnet constitute, magnet coil passes through valve pocket, valve body axially is installed in the exit of dust stratification pipe, the needle valve core relative with the outlet of dust stratification pipe is fixed on the front end of electromagnet yoke, suitable for reading and the poppet shaft of elastic seal cartridge is tightly connected, end opening and valve pocket are tightly connected, also be provided with air intake on the valve body, ash releasing tube, air intake, air intake is housed respectively on the ash releasing tube, the ash discharge valve.

2, large-sized boiler microwave carbon determination system as claimed in claim 1 grey device down, it is characterized in that: control circuit is mainly by induction type transformer BK, silicon bridge MIC, mu balanced circuit and noninductive touch switch LJ1, LJ2 that integrated regulator BG and capacitor C 2, C3 constitute, relay J 1, J2 constitute, LJ1 and J1, LJ2 and the output terminal that is connected in parallel on mu balanced circuit after J2 is connected in series, the normally opened contact of J1 is arranged on the circuit between silicon bridge output terminal and magnet coil, and the normally closed contact of J2 is arranged on the circuit between silicon bridge one output terminal and J1 normally opened contact; The probe of LJ1, LJ2 is installed in high ash position, the place, low ash position of microwave carbon determination system ash inlet tube respectively.