CN2152196Y

CN2152196Y - Supersonic pulse ash-removing and coke-removing device

Info

Publication number: CN2152196Y
Application number: CN 93203039
Authority: CN
Inventors: 祁振铎; 程汉春; 祁滨束; 祁家毅
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-02-08
Filing date: 1993-02-08
Publication date: 1994-01-05
Anticipated expiration: 2003-02-08

Abstract

The utility model relates to a supersonic pulse ash-removing and coke-removing device. Pulse sound wave is sent to boilers with various types, boiler chambers, heat exchangers and reaction kettles with various types at a supersonic speed, and is used for cleaning the ash deposition, the coking and the scaling of the boilers, the boiler chambers, the heat exchangers and the reaction kettles. The device periodically open and close a sedentary pressure diffusing jetting pipe by a variable-speed electric motor driving a contracting jetting pipe to rotate by an air-cooling type coupling. So the entrance area of the pressure diffusing jetting pipe and the exit area of the contracting jetting pipe are periodically altered so as to obtain modulated supersonic jet flow. The device is widely applied to the fields of the metallurgy, the energy resource, the petrifaction, the traffic, the light industry, the building material, etc. The utility model has obvious ash-removing and coke-removing effects.

Description

Supersonic pulse ash-removing and coke-removing device

This device belongs to dynamo-electric field, produces supersonic speed pulsed sound, the dust stratification, coking and the fouling that are used to remove various types of boilers, furnace chamber, heat exchanger and various types of reactors with mechanical means

In the prior art, remove the method for dust stratification coking, 91217983.X is described as Chinese patent, defocus with the impulse wave ash disposal, though very strong practicality is arranged, two shortcomings are arranged: 1. the effluxvelocity after the modulation is the velocity of sound, i.e. Mach number M=1, to the removing of the ash in some field, Jiao, dirt, not ideal.2. the pulsing jet air mass shape after the modulation is shown in Fig. 3 a, and its two ends f1, f2 be point, so wavefront is milder, and the shock wave of generation relatively disperses, and modulation efficiency is reduced, and has increased the air consumption of modulated media.

The purpose of this device is that the velocity of sound jet that will flow out shrink nozzle further quickens, and obtains the supersonic jet of M＞1, and changes the shape of jet air mass, makes f1, f2 rust, and to obtain steeper wavefront, the shock wave of generation is more concentrated, and intensity is big.

The structure of this device is that motor 7 drives disk 2 rotations that place air chamber 5 by shaft coupling 6 and seal 4, have on the disk 2 and its out-of-alignment shrink nozzle 8, disk 2 is near the injection well 3 on air chamber 5 walls, shrink nozzle 8 periodically opens and closes injection well 3 with the rotation of disk, injection well 3 is made jet pipe, this jet pipe can make the fluid of the jet pipe of flowing through quicken to be supersonic speed, also has an air inlet 1 on the air chamber 5.

Because this device adopts the diffusion jet pipe after shrink nozzle, produce the supersonic speed pulsed sound, and the shape of pulsing jet air mass is superior than prior art also, wavefront is steeper, the shock wave that produces is more concentrated, the ash disposal effect highly significant that defocuses, and save the energy, can be widely used in fields such as metallurgy, the energy, petrochemical industry, traffic, light industry, building materials.

Accompanying drawing 1 is this apparatus structure schematic diagram, and accompanying drawing 2 is three kinds of forms of injection well 3, and injection well 3 is diffusion jet pipes shown in a, the c, and injection well shown in the b 3 is Laval nozzles, and accompanying drawing 3 is pulsed sound jet waveforms.

Below in conjunction with accompanying drawing, several embodiments of this device are described.

(1) injection well 3 is made the diffusion jet pipe

The diameter phi 2 of diffusion jet pipe and shrink nozzle 8 abutting ends is more than or equal to the diameter phi 1 of shrink nozzle 8 outlets, shaft coupling 6 adopts air-cooled compound shaft coupling, seal 4 adopts the corrosion-and high-temp-resistant combined type mechanical sealing, and therefore employed medium can be air, superheated steam and other fluid (corrosive fluid).

(2) injection well 3 is made Laval nozzle.The adjacent diameter phi 2 of Laval nozzle and shrink nozzle 8 is greater than shrink nozzle 8 outlet diameter φ 1, shaft coupling 6 adopts air-cooled compound shaft coupling, seal 4 adopts the corrosion-and high-temp-resistant combined type mechanical sealing, and therefore employed medium can be air, superheated steam and other fluid (corrosive fluid).

Claims

1, supersonic speed pulsed sound apparatus for removing ash and coked things, motor 7 drives disk 2 rotations that place air chamber 5 by shaft coupling 6 and seal 4, have on the disk 2 and its out-of-alignment shrink nozzle 8, disk 2 is close to the injection well 3 on the air chamber 5, shrink nozzle 8 periodically opens and closes injection well 3 with the rotation of disk 2, air chamber 5 also has an air inlet 1, it is characterized in that injection well 3 is jet pipes, and this jet pipe can make the fluid of the jet pipe of flowing through quicken to be supersonic speed.

2, the ash disposal according to claim 1 device that defocuses is characterized in that injection well 3 is Laval nozzles.

3, the ash disposal according to claim 1 device that defocuses is characterized in that injection well 3 is diffusion jet pipes.

4, the ash disposal according to claim 2 device that defocuses is characterized in that adjacent diameter 2 φ of Laval nozzle and shrink nozzle 8 are greater than shrink nozzle 8 outlet diameter φ 1.

5, the ash disposal according to claim 3 device that defocuses is characterized in that the diameter phi 1 of the diameter phi 2 of diffusion jet pipe and shrink nozzle 8 abutting ends more than or equal to shrink nozzle 8 outlets.

6, according to claim 1 or 2 or 3 or the 4 or 5 described ash disposal device that defocuses, it is characterized in that seal 4 adopts combined type mechanical sealings.

7, according to claim 1 or 2 or 3 or the 4 or 5 described ash disposal device that defocuses, it is characterized in that shaft coupling 6 is air-cooled shaft couplings.

8, the ash disposal according to claim 6 device that defocuses is characterized in that shaft coupling 6 is air-cooled shaft couplings.