CN201908747U

CN201908747U - Premixing tank applicable to uniform mixing of gas fuel

Info

Publication number: CN201908747U
Application number: CN2010206201853U
Authority: CN
Inventors: 张红光; 白小磊; 孙娜; 韩雪娇
Original assignee: Beijing University of Technology
Current assignee: Beijing University of Technology
Priority date: 2010-11-19
Filing date: 2010-11-19
Publication date: 2011-07-27
Anticipated expiration: 2020-11-19

Abstract

The utility model discloses a premixing tank applicable to uniform mixing of gas fuel, and belongs to the field of internal combustion engine combustion. The premixing tank adopts non-contact magnetic stirring to realize safe and sufficient premixing. The premixing tank mainly comprises a rear end cover (1), a tank body (2), a fan (3), a fan shaft (4), a shaft (5), a magnet (6), blades (7), a front end cover (8), a window (9), a motor shaft (10), a motor (11), a motor bracket (12), a tank body bracket (17), and the like, wherein the motor (11) drives the blade (7) to rotate, and the magnet are embedded on the exterior of the blade, so that the internal blade (7) is driven to perform axial rotation through the magnetic force and further the fan is driven to rotate, and the mixing function is achieved. The premixing tank avoids the phenomenon of explosion for the reason that the conventional premixing tank is easy to be layered and the fan directly mounted on the tank body is easy to produce spark.

Description

Be applicable to the mixed uniformly premixing tank of gaseous fuel

Technical field

The utility model relates to a kind of mixed uniformly premixing tank of gaseous fuel that is applicable to, be mainly used in gas with various fuel is evenly mixed, and then spray into the laminar combustion research of carrying out all kinds of internal-combustion engine alternative fuel in the constant volume combustion bullet, belong to the combustion in IC engine research field.

Background technique

Mainly contain on the mixed uniformly pre-mixing apparatus principle of domestic and international existing learning gas fuel directly and make methods such as it fully mixes in the fan stirring of tank interior band power line with to tank surface heating quickening gaseous diffusion.Existing premixing tank main structure is that the space is unified in spheroidal, drum shape or oval-shaped sealing, and fuel and air stir in this space or spread mixing.The major defect of existing premixing tank is: 1, power line gos deep into being easy to generate spark in the tank body, and the inflammable gas that causes igniting is blasted; 2, lead gos deep into the difficult solution of sealing in the tank body; 3, the diffusion of mode of heating mixes the wait that needs certain hour, and the time of heating is difficult to hold, and the gas with various layering may appear in this process.

The model utility content

The purpose of this utility model has been to overcome existing premixing tank lead and has produced the defective that spark is difficult for sealing and adds thermally stratified layer, has proposed a kind of mixed uniformly premixing tank of gaseous fuel that is applicable to.By the magnetic force blade of driven by motor tank body outside, under the effect of inside and outside magnetic force, inner magnetic force blade rotates thereupon, finally drives the tank interior fan and rotates, and realizes mixing of gas.

To achieve these goals, the utility model has designed a kind of magnetic force fan premixing tank, be applicable to the mixed uniformly premixing tank of gaseous fuel, include rear end cover 1, tank body 2, front cover 8 and form 9 surround the premixing chamber, it is characterized in that: the center of front cover 8 is connected with form 9, in form 9 outsides motor 11 is installed, irritate the inside and outside blade 7 that respectively is equipped with at premix, blade 7 has the rectangular aluminium sheet of circular groove for positive and negative, at the two ends of blade two circular magnet 6 are housed respectively, the groove the inside of the blade that magnet 6 is just placed, the power of attracting each other by magnet is fixed on the blade, the output shaft of motor 11 connects the center of the blade 7 of premixing tank outside, the magnet 6 of irritating inner at premix is positioned at and outside magnet 6 corresponding positions, the center of inner blade 7 is connected with fan shaft 4, and fan shaft 4 the other ends are connected with and are used for the blender gas fluid fuel and make its uniform fan 3.

The middle part of fan shaft 4 is equipped with bearing 5, and circular-arc cushion block 14 is fixed on tank body 2 bottom inside, uses bolt to pass pillar 15 bearing 5 is fixed on the cushion block 14.

Circular-arc cushion block 14 is fixed on tank body 2 bottom inside by welding or the bonding mode of glue.

Described form 9 adopts high-strength transparence glass, and the thickness of glass is not more than 40mm and is not less than 30mm, and excessive magnetic force is difficult to penetrate, too small insufficient strength.From front cover 8 inboard embeddings, the convex edge of blocking form 9 is established in front cover 8 outsides.

Described premixing tank inner chamber is a cylindrical body, and diameter is not less than 160mm, highly is not less than 200mm,, excessive wind-force is not enough, and the mistake small leaf fails to lay down and the interior gas flow of containing of tank body uses inadequately.

External magnet 6 is not less than 1mm apart from the distance of form 9 in described, is not more than 5mm.

Be provided with inlet hole 18, pressure transmitter mounting hole 19 and air outlet hole 20 at tank body 2 tops.

Be provided with the axial restraint hole 21 that is connected with connecting plate 13 in tank body 2 bottom outside; Tank body is provided with two grooves 22 that 1mm is dark, is used for two tank body framves 17 are positioned; Four connecting rods 16 are fixed on two tank body framves, 17 centres by nut; On tank body frame 17, have three electric machine support holes 27 and two standing tank body openings 28, be used for respectively installing and win 13 and electric machine support 12 in succession; Motor 11 is installed on the electric machine support 12.

The major advantage of this device is: 1, utilize the contactless stirring of magnetic force; 2, need not heating can evenly mix; 3, connect lead in having cancelled and make the tank body good airproof performance; 4, device is light and handy but can realize big function, and premixing tank is the round structure easy processing, and cost is lower; 5, special in the designed pre-mixing apparatus of gaseous fuel; 6, the continuable mixed gas that stirs that provides; 7, the distribution that can guarantee to test under same equivalent proportion is once finished and evenly mixing, reduces greatly and tests repeatedly distribution and add the error that the thermodiffusion mixed zone is come; 8, inner stirring state is realized visual.

Description of drawings

Fig. 1 gaseous fuel premix filling device schematic representation

Fig. 2 is the utility model one preferred embodiment---the pre-mixing system of gaseous fuel

Fig. 3 is a pre-mixing apparatus tank body plan view embodiment illustrated in fig. 1

Fig. 4 is a pre-mixing apparatus tank body plan view embodiment illustrated in fig. 1

Fig. 5 is a pre-mixing apparatus tank body right elevation embodiment illustrated in fig. 1

Fig. 6 is pre-mixing apparatus front cover figure embodiment illustrated in fig. 1

Fig. 7 is pre-mixing apparatus rear end cover figure embodiment illustrated in fig. 1

Fig. 8 is pre-mixing apparatus form figure embodiment illustrated in fig. 1

Fig. 9 is pre-mixing apparatus tank body frame figure embodiment illustrated in fig. 1

Figure 10 is pre-mixing apparatus electric machine support figure embodiment illustrated in fig. 1

Figure 11 is pre-mixing apparatus motor shaft figure embodiment illustrated in fig. 1

Figure 12 is the pre-mixing apparatus embodiment illustrated in fig. 1 figure that wins in succession

Figure 13 is pre-mixing apparatus fan shaft figure embodiment illustrated in fig. 1

Figure 14 is pre-mixing apparatus pillar figure embodiment illustrated in fig. 1

Figure 15 is pre-mixing apparatus cushion block figure embodiment illustrated in fig. 1

Figure 16 is pre-mixing apparatus connecting rod figure embodiment illustrated in fig. 1

Figure 17 is pre-mixing apparatus blade figure embodiment illustrated in fig. 1

Among the figure: the 1-rear end cover; The 2-tank body; The 3-fan; The 4-fan shaft; The 5-bearing; 6-magnet; The 7-blade; The 8-front cover; The 9-form; The 10-motor shaft; The 11-motor; The 12-electric machine support; The 13-connecting plate; The 14-cushion block; The 15-pillar; The 16-connecting rod; 17-tank body frame; The 18-inlet hole; 19-pressure transmitter mounting hole; The 20-air outlet hole; 21-axial restraint hole; The 22-groove; 23-end cap attachment hole; 24-front cover hole; 25-rear end cover hole; 26-rack rod hole; 27-electric machine support hole; 28-standing tank body opening; 29-fixed electrical machinery hole; The 30-motor axis hole; The 31-floor; 32-fixed electrical machinery bracket holes; The 33-top wire hole; 34-fixed connecting piece hole; 35-link hole; The 36-fan hole; 37-rigid bearing hole; 38-magnet groove; 39-blade axis hole; The 40-switch valve; The 41-switch valve; The 42-vacuum pump; The 43-vacuum gauge; The 44-switch valve; The 45-air bottle; The 46-air manometer; The 47-switch valve; The 48-gas cylinder; 49-gaseous-pressure table; The 50-pressure transmitter; The 51-switch valve; The 52-firing chamber; The 53-power supply.

Embodiment

Based on the characteristics of this patent, mainly be to the mixing of gas with various, the embodiment when describing two kinds of gas with various in detail and stir premixs below in conjunction with Fig. 2～Figure 17.

Present embodiment mainly surrounds the premixing chamber by rear end cover 1, tank body 2, front cover 8 and form 9, and is provided with inlet hole 18, pressure transmitter mounting hole 19 and air outlet hole 20 at tank body 2 tops; Be provided with the axial restraint hole 21 that is connected with connecting plate 13 in tank body 2 bottom outside, winning in succession 13 has fixed connecting piece hole 34 and link hole 35; On the face of the rear and front end of tank body 2, have 18 end cap attachment holes 23; Tank body 2 is provided with two grooves 22 that 1mm is dark, is used for two tank body framves 17 are positioned; Have 18 the front cover holes 24 corresponding on the front cover 8, also have 18 rear end cover holes 25 on the same rear end cover 1, be used for doing bolt and connect with tank body 2; Four connecting rods 16 pass support attachment hole 26 by nut and are fixed on two tank body framves, 17 centres; On tank body frame 17, have three electric machine support holes 27 and two standing tank body openings 28, be used for installing connecting plate 13 and electric machine support 12 respectively; Have three fixed electrical machinery bracket holes 32 that mate with tank body frame 17 on the electric machine support 12, be welded with the intensity that floor 31 is used for improving electric machine support 12 at the support bending part; Motor 11 passes motor axis hole 30, bolt is fixed on motor 11 above the electric machine support 12 by fixed electrical machinery hole 29, connect magnet 6 blades 7 of going up the outside by motor shaft 10, have top wire hole 33 on the motor shaft 10 and be used for fixing motor 11 and motor shaft 10, have magnet groove 38 and the blade axis hole 39 of placing magnet on the blade 7; Circular-arc cushion block 14 is fixed on tank body 2 bottom inside by welding or the bonding mode of glue, use bolt that the bearing 5 of belt supporting frame is passed pillar 15 and be fixed on the cushion block 14, cushion block 14 correspondences have a rigid bearing hole 37; Fan shaft 4 passes bearing 5 two ends and connects fan 3 and inner magnet 6 blades 7 respectively, and an end that wherein connects fan 3 has fan hole 36 and is used for twisting bolt fan 3 specially; Form 9 is high-strength transparence and the silica glass that is not magnetized, and from front cover 8 inboard embeddings, the convex edge of blocking form 8 is established in front cover 8 outsides; The pipeline of vacuum pump 42, air bottle 45, the gas cylinder 48 of having linked to each other with inlet hole 18, vacuum pump 42 is used for to vacuumizing in the tank body 2, and pressure transmitter 50 is used for controlling aeration quantity, and the gas that air outlet hole 20 is used for mixing is injected in the firing chamber 52; Power supply 53 gives motor 11 power supplies, and stirring motive force is provided.

The premixing tank inner chamber is a cylindrical body, and diameter is 160mm, highly is 250mm.

It is the silica glass of 30mm that form 9 is selected thickness for use.

External magnet 6 is 2mm apart from the distance of form 9 in described in the present embodiment.

The hardware connection diagram of the pre-mixing system of gaseous fuel as shown in Figure 1.Air comes out from air bottle 45, and by the decompression pressure regulating valve, this moment, the preliminary size of pressure was read by air manometer 46, opens valve 44 and 40 and charges into air in the tank body 2, and the force value that air charge in the tank body 2 is read by pressure transmitter 50; Equally, inflammable gas comes out from gas cylinder 48, and by the decompression pressure regulating valve, this moment, the preliminary size of pressure was read by gaseous-pressure table 49, open valve 47 and 40 then earlier and fill inflammable gas in the tank body 2, the last force value of mixed gas is read by pressure transmitter 50; When exhaust, open valve 40 and 41, by vacuum pump 42 residual gas in the tank body 2 is discharged, vacuum gauge 43 is used for showing the suction in the tank body 2.

The working procedure of this device briefly is described below:

1, regulates the outlet pressure of air bottle 45 by air reducing valve, maintained switch valve 41 and 47 cuts out, open switch valve 44 and 40 and charge into air to the premixing chamber from the top, measure the pressure that charges into gas by pressure transmitter 50, when the air pressure value in the premixing chamber reaches goal pressure, off switch valve 40 and 44 at once.

2, open switch valve 41, the startup vacuum pump carries out pipeline and vacuumizes.

3, the inflation method with air is the same, regulates the outlet pressure of gas cylinder 48 by reduction valve, and pressure transmitter 50 detects the pressure of mixed gas in the premixing chambers, when mixture pressure value arrival goal pressure, and off switch valve 40 and 47 at once.

4, open switch valve 41, make it be in normally open, the residual gas in the pipeline is exitted.

5, power-on 53, and 11 pairs of mixed gass of substituting the bad for the good of starting electrical machinery stir fully.

6, mix gas after 1 hour, open switch valve 51, provide even inflammable mixture to firing chamber 52.

7, gas flow in the premixing chamber or gas pressure are tested when using gas inadequately, need carry out the inflation of a new round, and this moment, the off switch valve 51, opened switch valve 40, start vacuum pump 42 and discharge residual gas.

Claims

1. be applicable to the mixed uniformly premixing tank of gaseous fuel, include rear end cover (1), tank body (2), front cover (8) and form (9) surround the premixing chamber, it is characterized in that: the center of front cover (8) is connected with form (9), in form (9) outside motor (11) is installed, irritate the inside and outside blade (7) that respectively is equipped with at premix, blade (7) has the rectangular aluminium sheet of circular groove for positive and negative, at the two ends of blade two circular magnet (6) are housed respectively, the groove the inside of the blade that magnet (6) is just placed, the power of attracting each other by magnet is fixed on the blade, the output shaft of motor (11) connects the center of the blade (7) of premixing tank outside, the magnet (6) of irritating inner at premix is positioned at and the outside corresponding position of magnet (6), the center of inner blade (7) is connected with fan shaft (4), and fan shaft (4) the other end is connected with and is used for the blender gas fluid fuel and makes its uniform fan (3).

2. the mixed uniformly premixing tank of gaseous fuel that is applicable to according to claim 1, it is characterized in that: the middle part of fan shaft (4) is equipped with bearing (5), circular-arc cushion block (14) is fixed on tank body (2) bottom inside, uses bolt to pass pillar (15) bearing (5) is fixed on the cushion block (14).

3. the mixed uniformly premixing tank of gaseous fuel that is applicable to according to claim 2 is characterized in that: circular-arc cushion block (14) is fixed on tank body (2) bottom inside by welding or the bonding mode of glue.

4. the mixed uniformly premixing tank of gaseous fuel that is applicable to according to claim 1 is characterized in that: described form (9) adopts high-strength transparence glass, and the thickness of glass is not more than 40mm, and is not less than 30mm; Embed from front cover (8) is inboard, the convex edge of blocking form (9) is established in front cover (8) outside.

5. the mixed uniformly premixing tank of gaseous fuel that is applicable to according to claim 1, it is characterized in that: described premixing tank inner chamber is a cylindrical body, and diameter is not less than 160mm, highly is not less than 200mm.

6. the mixed uniformly premixing tank of gaseous fuel that is applicable to according to claim 1 is characterized in that: external magnet (6) is not less than 1mm apart from the distance of form (9) in described, is not more than 5mm.

7. according to claim 1 or claim 2 or the described mixed uniformly premixing tank of gaseous fuel that is applicable to of claim 3, it is characterized in that: be provided with inlet hole (18), pressure transmitter mounting hole (19) and air outlet hole (20) at tank body (2) top.

8. according to claim 1 or claim 2 or the described mixed uniformly premixing tank of gaseous fuel that is applicable to of claim 3, it is characterized in that: be provided with the axial restraint hole (21) that is connected with connecting plate (13) in tank body (2) bottom outside; Tank body is provided with two grooves (22) that 1mm is dark, is used for two tank body framves (17) are positioned; Four connecting rods (16) are fixed in the middle of two tank body framves (17) by nut; On tank body frame (17), have three electric machine support holes (27) and two standing tank body openings (28), be used for respectively installing and win in succession (13) and electric machine support (12); Motor (11) is installed on the electric machine support (12).