A kind of gas distribution equipment
Technical field
The utility model is related to the parts of automatic gas distribution system, more particularly to a kind of gas distribution equipment.
Background technology
Currently, automatic gas distribution system is mainly connected by mass flowmenter, solenoid valve, signal conversion module and by threeway and two
The compositions such as the gas piping of head connection.By solenoid valve control mass flowmenter by the flow of gas, by signal modulus of conversion
The signal of sensor test is converted to by block.The mixed gas that mass flowmenter matches out is set according to required target gas levels
It sets, each mass flowmenter controls a kind of flow of gas, and the gas piping connected by threeway or two pass joints converges.Herein
In the process, the flowrate proportioning of Balance Air and target gas, it is simply that there is the gas mixing of big flow and small flow, one
As distribution gas circuit selection be three-way connection, structure be it is T-shaped, as shown in Figure 1.
Gas circuit design in the prior art generally has two kinds of situations as shown in Figures 2 and 3.Gas circuit shown in Fig. 2 is set
It is calculated as:Small-flow gas flows into from horizontal direction, and big flow gas is flowed into from the vertical direction vertical with horizontal direction, wherein scheming
Shown in 21 ', 2 ', 3 ', 4 ' and 5 ' be same diameter connector, 6 ' be gas piping identical with above-mentioned bond diameter.Fig. 3
Shown in gas circuit be designed as:Big flow gas flows into from horizontal direction, and small-flow gas is from the vertical side vertical with horizontal direction
To inflow, wherein shown in Fig. 31 ', 2 ', 3 ', 4 ' and 5 ' be the identical connector of diameter, 6 ' be identical as above-mentioned bond diameter
Gas piping.
According to gas dynamics, the flow of small-flow gas and big flow gas is small in the case where differing greatly
Flow gas can be hindered, this is because generating resistance to air-flow when gas tube wall turns round, this resistance can there are one in pipe
The trend that pressure is spread to both sides is formed in road, as shown in figure 4,8 ' be small fluid inlet, 9 ' be big flow import, and 10 ' be mixed
Close the exhaust outlet of gas.This pressure forms to squeezing the import of small flow, causes the gas of small flow can not be with the gas of big flow
Body mixes, and as shown by the arrows in Figure 4, and the gas of big flow can be also lost.
Utility model content
One purpose of the utility model is the small-flow gas that solve to face in the prior art and big flow gas
Flow is in the case where differing greatly, technical problem that small-flow gas can be hindered.
Particularly, the utility model provides a kind of gas distribution equipment, including threeway, and the threeway includes in same
The first connector and the second connector on straight line and the third connector perpendicular with first connector and second connector,
First connector is connected with exhaust outlet, the gas distribution equipment further include respectively with second connector and the third
It circulates in the first pipeline and the second pipeline that connector is connected, the gas to circulate in first pipeline and second pipeline
Gas is discharged after being converged in the threeway from the exhaust outlet;The gas flow to circulate in wherein described first pipeline is more than institute
State the gas flow to circulate in the second pipeline;And one end of second pipeline is stretched into the threeway, and connect towards described first
Head where direction extend beyond first pipeline near the inner side edge edge of first connector.
Optionally, the internal diameter of second connector is more than the outer diameter of second pipeline.
Optionally, the internal diameter of second pipeline is less than the internal diameter of first pipeline.
Optionally, the internal diameter of second pipeline is the half of the internal diameter of first pipeline.
Optionally, the gas distribution equipment further includes two-way, and second piping connection is in the two-way and described three
Between logical second connector.
Optionally, one end of second pipeline is stretched into the channel between first connector and second connector.
Optionally, second line configurations are at straight tube.
Optionally, the gas distribution equipment further includes two-way, and second piping connection is in the two-way and described three
Between the logical third connector.
Optionally, one end of second pipeline is stretched into the channel between first connector and second connector.
Optionally, one end of second pipeline is bent to first connector direction.
The embodiment of the utility model avoids big flow gas to squeezing due to improving the intake method of small-flow gas
Small-flow gas, to overcoming because of small-flow gas loss caused by throughput difference is too big, and distribution is inaccurate
Technical problem.On the other hand, a low-pressure area can be formed at the orifice outlet of the second pipeline due to big flow gas, is contributed to
The circulation of small-flow gas.
According to the accompanying drawings to the detailed description of the utility model specific embodiment, those skilled in the art will be more
Add the above-mentioned and other purposes, advantages and features of clear the utility model.
Description of the drawings
Some specific realities of the utility model are described in detail by way of example rather than limitation with reference to the accompanying drawings hereinafter
Apply example.Identical reference numeral denotes same or similar component or part in attached drawing.It should be appreciated by those skilled in the art that
The drawings are not necessarily drawn to scale.In attached drawing:
Fig. 1 is the perspective schematic view for the threeway for being used for distribution gas circuit in the prior art;
Fig. 2 is the schematic diagram of one of which gas circuit in the prior art;
Fig. 3 is the schematic diagram of another gas circuit in the prior art;
Fig. 4 is the schematic block diagram that small-flow gas is hindered in threeway by big flow gas in the prior art;
Fig. 5 is the perspective schematic view according to the threeway of the utility model one embodiment;
Fig. 6 is the schematic diagram according to the gas distribution equipment of the utility model one embodiment;
Fig. 7 is the schematic diagram according to the gas distribution equipment of the utility model another embodiment.
Specific implementation mode
Fig. 1 shows the perspective schematic view for the threeway for being used for distribution gas circuit in the prior art.As shown in fig. 1, this three
Logical 100 ' include the first connector 1 ' on same straight line and the second connector 2 ' and are connect with first connector 1 ' and described second
First 2 ' perpendicular third connectors 3 ', wherein the first connector 1 ' is connected with exhaust outlet 10 '.Threeway 100 ' in the prior art
Inside has the diminution portion 7 ' that a diameter reduces.Fig. 5 is shown according to the schematic of the threeway of the utility model one embodiment
Perspective view.As shown in figure 5, inventor improves threeway, diminution portion 7 ' in the prior art is extended to and is connect with other
The internal diameter of head is identical.Threeway other parts retain, i.e. threeway in the utility model includes the first connector 1, the second connector 2 and the
Three connectors 3.
In conjunction with Fig. 6 and Fig. 7, the utility model embodiment provides a kind of gas distribution equipment, including 66 He of the first pipeline
Second pipeline 7.First pipeline 66 is connected with the third connector 3 of above-mentioned threeway 100, for the big flow gas that circulates.Second pipe
Road 7 is connected with the second connector 2 of threeway 100, for the small-flow gas that circulates.The gas flow of wherein big flow gas is more than
The gas flow of small-flow gas.Small-flow gas and big flow gas flow out after convergence from exhaust outlet 10 in threeway 100.Its
In, one end of the second pipeline 7 is stretched into threeway 100, and extends beyond the first pipeline 66 towards the direction where the first connector 1
Near the inner side edge edge 8 of the first connector 1.Wherein, the internal diameter of the second connector 2 is more than the outer diameter of the second pipeline 7.
In one embodiment, the diameter of the second pipeline 7 is less than the internal diameter of the first pipeline 6.In a preferred embodiment
In, the half of the internal diameter of a diameter of first pipeline 6 of the second pipeline 7.Gas distribution equipment can also include two-way 200,
Second pipeline 7 is connected between two-way 200 and threeway 100.
In one embodiment, as shown in fig. 6, the second pipeline 7 be connected to two-way 200 and threeway 100 the second connector 2 it
Between.Second pipeline 7 is straight tube, and one end stretches into the channel between the first connector 1 and the second connector 2.
In another embodiment, as shown in fig. 7, the second pipeline 7 is connected to the third connector 3 of two-way 200 and threeway 100
Between.Second pipeline 7 is bend pipe, and one end stretches into threeway 100, and is bent towards the direction where the first connector 1.
The embodiment of the utility model avoids big flow gas to squeezing due to improving the intake method of small-flow gas
Small-flow gas, to overcoming because of small-flow gas loss caused by throughput difference is too big, and distribution is inaccurate
Technical problem.On the other hand, a low-pressure area can be formed in 9 exit of nozzle of the second pipeline 7 due to big flow gas, helped
In the circulation of small-flow gas.
Embodiment one:
Fig. 6 shows the schematic diagram of the gas distribution equipment according to the utility model one embodiment.Such as Fig. 6 institutes
Show, the gas distribution equipment in the embodiment is improved on the basis of gas circuit shown in Fig. 2.In the embodiment, the
Two connectors 2 are arranged to be located along the same line with the first connector 1, and the one end of the second pipeline 7 being connected with the second connector 2 is stretched into
In channel between first connector 1 and the second connector 2, and 9 position of nozzle of the second pipeline 7 be more than the first pipeline 6 near
The inner side edge edge 8 of nearly first connector 1.Wherein, the second pipeline 7 is configured to straight tube.In one embodiment, first connector 1
The diameter of thread is 1/4 foot, and the diameter of thread of third connector 3 is 1/4 foot, and the diameter of thread of the second connector 2 is 1/8 foot.
The connector of wherein two-way 200 is 1/4 foot and turns 1/8 foot of connector, 1/4 foot of the connector 5 of the gas of small flow from two-way
It flows into, the channel in threeway 100 is flowed by the second pipeline 7 via 1/8 foot of connector 4, and flow out from exhaust outlet 10.Such as figure
Shown in 6, which gos deep into inside threeway 100, and 9 position of nozzle of the second pipeline 7 is more than T-type pressure
Power area simultaneously extends to 1 direction of the first connector.This design can be to avoid air-flow to squeezing, and due also to big air-flow acts on
A low-pressure area is generated in threeway, is more conducive to the circulation of small-flow gas.
Embodiment two:
Fig. 7 shows the schematic diagram of the gas distribution equipment according to the utility model another embodiment.Such as Fig. 7
Shown, the gas distribution equipment in the embodiment is improved on the basis of gas circuit shown in Fig. 3.In the embodiment,
Second connector 2 is arranged to be located along the same line with the first connector 1, and one end of the second pipeline 7 is stretched into the first connector 1 and second and connect
In channel between first 2, and 9 position of nozzle of the second pipeline 7 is more than the first pipeline 6 near the inside of the first connector 1
Edge part 8.Wherein, one end of second pipeline 7 is bent towards 1 direction of the first connector.In one embodiment, first connector
1 diameter of thread is 1/4 foot, and the diameter of thread of the second connector 2 is 1/4 foot, and the diameter of thread of third connector 3 is 1/8 English
Ruler.The connector of wherein two-way 200 is 1/4 foot and turns 1/8 foot of connector, and the gas of small flow is from 1/4 foot of two-way 200
Connector 5 flows into, and flows into the channel in threeway 100 by the second pipeline 7 via 1/8 foot of connector 4, and flow from exhaust outlet 10
Go out.As shown in fig. 7, additional increased second pipeline 7 gos deep into inside threeway 200, and 9 position of nozzle of the second pipeline 7 is super
It crosses T-type pressure area and is bent to 1 direction of the first connector.This design can be to avoid air-flow to squeezing, and due also to big air-flow
Act on and generate a low-pressure area in threeway, be more conducive to the circulation of small-flow gas.
So far, although those skilled in the art will appreciate that the more of the utility model have been shown and described in detail herein
A exemplary embodiment still, still can be according to the utility model public affairs in the case where not departing from the spirit and scope of the utility model
The content opened directly determines or derives many other variations or modifications for meeting the utility model principle.Therefore, this practicality is new
The range of type is understood that and regards as to cover other all these variations or modifications.