A kind of air supplement unit for spraying and blowing system pipeline
Technical field
The utility model belongs to concentrated phase Dual-Phrase Distribution of Gas olid conveying technology field, relates to the winding-up delivery system of utilizing gas delivery particle pulvis, particularly the pulvis injection system of steelworks desulfurizing iron.
Background technology
When the steelworks desulfurizing iron, adopt the mode of concentrated phase Dual-Phrase Distribution of Gas olid to carry desulfurization powder usually, promptly adopt pressure gas (as pressurized air, nitrogen etc.) to do carrier gas, conveying granular or Powdered pulvis flow to spray gun from the winding-up jar.In course of conveying, overcome the gravity that friction drag in the diffuser and pipeline promote section by pressure gas, promote pulvis and flow.Carry the winding-up pipeline of desulfurization powder to be formed by combining by horizontal segment, bend loss, lifting section usually, in order to satisfy the conveying requirement of material simultaneously in horizontal segment, bend loss and lifting section, can only adopt bigger carrier gas flux, promptly reduce material-carrier gas ratio, cause in the horizontal segment solid-gas flow very fast, friction drag is big, and winding-up jar operation pressure and carrier gas pressure head are more high.Therefore operating cost has not only been wasted in such design, but also has quickened the wearing and tearing to winding-up pipeline tube wall of the abrasion of frangible material and material.
The utility model content
The purpose of this utility model is to provide a kind of air supplement unit for spraying and blowing system pipeline.
The purpose of this utility model is achieved through the following technical solutions: a kind of air supplement unit for spraying and blowing system pipeline is characterized in that: this device comprises winding-up delivery pipe that can insert spraying and blowing system pipeline and at least one blowdown pipe that is communicated with described winding-up delivery pipe; Be provided with the device that only allows the gas unidirectional motion in the described blowdown pipe.
Described device that allows the gas unidirectional motion can comprise limiting stopper, hollow piston and make described piston adjust with the pressure reduction between described blowdown pipe and the described winding-up delivery pipe and described limiting stopper between the elastic parts of aperture; Described limiting stopper is captiveed joint with described blowdown pipe and is had a through hole; Described piston passes the area of the area of described through hole and its head greater than described through hole; The body of described piston is provided with some pores near described limiting stopper one end, also can slot certainly or other similar structures, needs only inner chamber and external environment connect with piston.At an end perforate or a groove of piston body, during making-up air device work, the flow area of perforate or groove is relevant with the deflection of elastic parts, and the pressure reduction of making-up air device and transfer line is big more, and the flow area of perforate or groove is big more, and air compensation is big more.
Described elastic parts can comprise fixing spring seat, the movable spring seat that can in described blowdown pipe, slide of captiveing joint with described limiting stopper and be arranged on the fixing spring seat and the movable spring seat between spring, the quantity of spring can be one or some, other similar elastomeric elements also can be set certainly reach the function that makes piston adjust aperture with the pressure reduction between blowdown pipe and the winding-up delivery pipe; The afterbody of described piston is provided with flange.Utilize the switching of the difference of pressure promotion spring or the spring assembly control making-up air device of tonifying Qi pipeline and winding-up pipeline.
Be the flow direction of directs pressurized gas, the angle of described blowdown pipe and described winding-up delivery pipe is preferably acute angle, i.e. blowdown pipe and the cavity of jetting delivery pipe formation " Y " shape; Further, the angle of described blowdown pipe and described winding-up delivery pipe is preferably 30 °.
Be simplification device, this device only comprises a blowdown pipe.
The beneficial effects of the utility model are:
(1) utilize the utility model can reduce the average carrier gas flux of winding-up pipeline, the Dual-Phrase Distribution of Gas olid mean flow rate reduces, and avoids the separation of gas-solid two-phase, and reduces the wearing and tearing to winding-up pipeline tube wall of the abrasion of frangible material and material, prolongs the service life of pipeline.
(2) in the winding-up pipeline, adopt the utility model, can adopt less load volume at the horizontal segment of pipeline, delivery pressure is low, can allow material successfully flow through the bend loss and the lifting section of pipeline by tonifying Qi again, thereby reduced the resistance to flow of whole winding-up delivery system, reduce the energy consumption of winding-up delivery system, reduced the design pressure of winding-up carrier gas and winding-up jar.
(3) the utility model is simple and reliable for structure, can realize automatic guidance to the pipeline tonifying Qi, and can be according to the pressure reduction automatically regulating flow of air supply of transfer line and tonifying Qi pipeline, utilize the utility model, can optimize the design of winding-up pipeline, straight horizontal pipeline section and the bigger bend loss of curvature are arranged in the upstream of injection system as far as possible, adopt less load volume, to promote the downstream that section and the less bending section of curvature are arranged in injection system as far as possible, thereby reduce operating cost, increase economic efficiency.
(4) but because the aperture automatic compensation between piston and the limiting stopper, so the utility model can avoid the excessive material that causes of air compensation to flow backwards or blocking pipe.
(5) because the angle of described blowdown pipe and described winding-up delivery pipe is an acute angle, therefore the flow direction of bootable high pressure gas better promotes the material flow further downstream.
(6) owing to only a blowdown pipe is set, so the utility model is simple in structure, and is easy for installation.
In a word, the utility model is simple in structure, can effectively reduce the gas consumption of pipeline, and helps improving the stability and the reliability of winding-up transfer line, prolongs the service life of pipeline.
Description of drawings
Fig. 1 is the structural representation of the utility model making-up air device embodiment 1;
Fig. 2 is the structural representation of the utility model winding-up pipeline system;
Fig. 3 is the structural representation of the utility model embodiment 2.
The specific embodiment
The utility model is described in further detail below in conjunction with concrete embodiment, but therefore the utility model is not limited among the following concrete embodiment;
Embodiment 1: as shown in Figure 1, a kind of air supplement unit for spraying and blowing system pipeline comprises winding-up delivery pipe 3 that can insert spraying and blowing system pipeline and a blowdown pipe 1 that is communicated with described winding-up delivery pipe 3, and described blowdown pipe 1 is 30 ° with the angle of described winding-up delivery pipe 3; Be provided with the device that only allows gas unidirectional motion in the described blowdown pipe 1, this allow device of gas unidirectional motion to comprise limiting stopper 5, hollow piston 4 and make described piston 4 adjust with the pressure reduction between described blowdown pipe 1 and the described winding-up delivery pipe 3 and described limiting stopper 5 between the elastic parts of aperture; Described limiting stopper 5 is captiveed joint with described blowdown pipe 1 and is had a through hole 5-1; Described piston 4 passes the area of the area of described through hole 5-1 and its head greater than described through hole 5, and the afterbody of described piston 4 is provided with flange 4-2; The body of described piston 4 is provided with some pore 4-1 near described limiting stopper 5 one ends; Described elastic parts comprise fixing spring seat 6, the movable spring seat 7 that can in described blowdown pipe 1, slide of captiveing joint with described limiting stopper 5 and be arranged on fixing spring seat 6 and movable spring seat 7 between spring 2.
During initial condition, making-up air device is in state as shown in Figure 1.
When the pressure of winding-up delivery duct was lower than the pressure of tonifying Qi pipeline, the pressure reduction of tonifying Qi pipeline and winding-up pipeline promoted piston 4 and moves downward by flange 4-2 drive spring 2, and the pore 4-1 that is arranged in piston 4 lower ends shifts out from limiting stopper 5, and making-up air device is opened.Difference of pressure is big more, and the deflection of spring 2 is big more, and the pore 4-1 that limiting stopper 5 is shifted out in piston 4 lower ends is many more, and flow area is big more, and the tonifying Qi flow velocity is big more.When the pressure between tonifying Qi pipeline and the winding-up pipeline diminishes, under the effect of spring 2, make piston 4 get back to initial condition by driving flange 4-2, making-up air device is closed, and stops carrier gas or material anti-channeling to blowdown pipe 1.
When adopting the spring of different modulus of elasticity or spring assembly 2, variation has taken place in the difference of pressure that promotes piston motion, promptly opens or close the difference of pressure difference of making-up air device.Can utilize the spring or the spring assembly 2 of different modulus of elasticity to change the adjusting function of making-up air device to tonifying Qi, design is applicable to the making-up air device of different winding-up transfer lines.
When in the defeated pipeline system of winding-up, adopting making-up air device, as shown in Figure 2, the delivery pipe 3 of will jetting adopts conventional approach to insert the winding-up pipeline, blowdown pipe 2 is connected high-pressure air source 10, therefore can in the horizontal segment 8 of pipeline, adopt less load volume, transporting resistance is low, can allow material successfully flow through the lifting section 9 of pipeline again, thereby reduced the resistance to flow of whole winding-up delivery system, and the energy consumption of minimizing winding-up delivery system, reduce the design pressure of winding-up carrier gas and winding-up jar, can also reduce the wearing and tearing of the abrasion of frangible material and material winding-up pipeline tube wall.
Embodiment 2: as shown in Figure 3, different is for present embodiment and embodiment 1, and making-up air device comprises two symmetrically arranged blowdown pipes, parts in the blowdown pipe and be provided with among position and mode and the embodiment 1 identical.Other structures of present embodiment are identical with embodiment 1.
Embodiment 3~10, and these embodiment and the embodiment 1 angle α that different is between blowdown pipe 1 and the winding-up delivery pipe 3 has any different, and is as shown in the table:
Angle among table one embodiment 2~9 between blowdown pipe and the winding-up delivery pipe
| |
α |
| Embodiment 3 |
10° |
| Embodiment 4 |
20° |
| Embodiment 5 |
40° |
| Embodiment 6 |
45° |
| Embodiment 7 |
50° |
| Embodiment 8 |
60° |
| Embodiment 9 |
70° |
| Embodiment 10 |
80° |