CN104913875A

CN104913875A - Online dredging anti-blocking sampler

Info

Publication number: CN104913875A
Application number: CN201410087052.7A
Authority: CN
Inventors: 任广营
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-03-11
Filing date: 2014-03-11
Publication date: 2015-09-16

Abstract

Disclosed is an online dredging anti-blocking sampler which is capable of online real-time dredging, and is high in safety and reliability and simple and rapid to operate. The online dredging anti-blocking sampler is characterized in that accurate measurement is realized through a sampling pipeline which can rotate a hand wheel, screw a valve lever drill in and out and dredge obstructions in real time in an online mode. The online dredging anti-blocking sampler solves the disadvantages of tedious dredging and back flushing operation and existence of safety hidden risks when a conventional anti-blocking sampler generates an obstruction condition, reduces the labor intensity and better guarantees safety production.

Description

The anti-blocking sampler of online dredging

One, technical field

The present invention relates to a kind of anti-blocking sampler that can dredge in real time online.Especially be suitable for the equipment such as Circulating Fluidized Bed Boiler easily to block up, the process of the pressure not easily dredged, pressure reduction measuring point, realizes Measurement accuracy.

Two, background technology

The block-proof pressure-taking of current boiler generally adopts conventional anti-blocking sampler (vase-shaped), (quiet from deashing, dynamic pressure) sampler and the anti-blocking sampler of continuous purging etc., though these products have certain effect on block-proof pressure-taking, but some keypoint part, still often there is latch up phenomenon, particularly Circulating Fluidized Bed Boiler just more easily blocks, because the burning in fluidized bed burner hearth utilizes the powerful distinguished and admirable Flow of Goods and Materials that makes to get up to carry out Thorough combustion, fluidisation situation in its burner hearth is an important operational factor, but the material of flowing is easily at sampling nozzle accumulating particulate, coking, impact is normal measures, certain impact is brought to the safe operation of boiler

Reference:

1, the anti-blocking sampler product introduction of Wuxi City Zhen Hu instrucment and meter plant

2, reasons and management Jin sea " application technology " phase June the 6th in 2006 of circulating fluidized bed boiler coking

3, the flat national generating plant Thermal Automation specialized conference collection of thesis in 2007 of boiler furnace pressure obtaning device cause of ash blocking analyzing and studying Yong Shao

In practice, the anti-blocking sampler of Circulating Fluidized Bed Boiler close phase stressor layer, pressure reduction measuring point is than being easier to blocking, once blocking or obstructed (blocking of particle, coke button, dust is multiplely born in the following stopple coupon of cone, sometimes coke button, particle are more, there will be the phenomenon of pressure " logical and not smooth ", pressure is on the low side, pressure-difference fluctuation, response lag).Transmitter need be taken apart (the transmitter range surveying cigarette pressure is less, prevents transmitter excessive pressure damages), be dredged by transmitter interface compress wind blowback, that sometimes blocks up is more real, blow not open, sampler plug will be taken apart, and dredge with reinforcing bar, even beat with weight and wash open, wash open in a flash, because the close phase layer of boiler is zone of positive pressure, high temperature furnace slag (900 DEG C-1000 DEG C) can spray, easy scald is abnormally dangerous, non-ly haves no alternative but inoperation.Secondly in reality, anti-blocking sampler is purged continuously, because installing more complicated; Pressure regulator valve, flow controller fault and deviation easily affect measuring accuracy; Excessive too high blast easily causes transmitter (the transmitter range surveying cigarette pressure the is less) reason such as zero point drift and bellows damage.Daily servicing amount is large, and instream factor is very low.The still anti-blocking sampler of conventional type generally used.

Three, summary of the invention

When the invention solves existing anti-blocking sampler generation blockage, dredging, blowback complex operation, and there is the shortcoming of potential safety hazard, providing one can dredge online in real time, anti-blocking sampler safe and reliable, simple and efficient to handle

Structure composition of the present invention: stopple coupon is Φ 32*400mm, conical shell Φ 108*350mm, and connecting pipe interface M20*1.5 articulation is connected with Φ 14 connecting pipe.It is characterized in that: barrel tip installs Φ 12 wide screw thread precession valve rod, with threaded sleeve and the precession of graphite circle fixing seal valve rod, gland nut regulates graphite grazing, be equipped with grease seal lubrication again, valve rod front end is precession drill bit, and rear end is hand-rail type handwheel, fast and easy spinning in and out, particle in stopple coupon, coke button, dust are brought in stove under the effect from gravity, reaches the object that pipeline is unobstructed, realize Measurement accuracy.Stopple coupon length, shaft length (valve rod screw into the end, grows sample tap 2-3cm and is as the criterion) can customize according to field condition, and valve rod can screw out replacing.This anti-blocking sampler should be greater than 45 degree of oblique angles and install better effects if

Beneficial effect: this anti-blocking sampler structure is simple, and cost of investment is low, pure mechanical realization.High temperature resistant, resistance to dust, the rugged surroundings of boiler area preferably high temperature with high dust, operability, reliability are higher

When blocking occurs anti-blocking sampler, by the spinning in and out of operation handwheel, particle, coke button, dust are brought in stove under the effect from gravity, reaches pipeline unobstructed, realize Measurement accuracy, easy and simple to handle, safe and reliable.Without the need to being taken apart by sampler plug, dredging of taking risks, reduces labour intensity, improves safety in production and ensures.

Four, accompanying drawing explanation

Online dredging anti-blocking sampler structure figure ratio 1:3

1, rotation hand wheel

2, gland packing nut

3, connecting pipe interface M20*1.5 articulation

4, precession drill bit

5, stopple coupon Φ 32*400mm

6, valve rod Φ 12

7, threaded sleeve

8, cylindrical shell Φ 108*350mm

9, cone.

Five, embodiment

Below in conjunction with Figure of description, the present invention is done and illustrates further:

The present invention is when normal pressure is measured, and valve rod drill bit 4 can be in cone 9 top, when stopple coupon 5 blocks, and operation rotation hand wheel 1, rotation valve rod 6 inwards, according to loose, the closely knit situation of blocking, regulates the dynamics of spinning in and out, until forward handwheel 1 to the end, back and forth several times, guarantee that pipeline is unobstructed.In dredging process, also can beat a few lower shell 8 of concussion, what allow particle, coke button, dust fall is more thorough, better effects if.Dredge complete, screwed out by valve rod drill bit 4 in cylindrical shell 8, operation terminates.

Claims

1. an anti-blocking sampler, can dredge online in real time, safe and reliable, simple and efficient to handle, it is characterized in that by rotatable handwheel, spinning in and out valve rod drill bit, and the sampling line of online dredge blockage in real time, realizes Measurement accuracy.