CN212644682U - Gas mixing device - Google Patents
Gas mixing device Download PDFInfo
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- CN212644682U CN212644682U CN202021468453.4U CN202021468453U CN212644682U CN 212644682 U CN212644682 U CN 212644682U CN 202021468453 U CN202021468453 U CN 202021468453U CN 212644682 U CN212644682 U CN 212644682U
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Abstract
The utility model provides a gas mixing device, which relates to the technical field of gas mixing and comprises a mixing device body and a mixing mechanism; the mixing device body comprises an air inlet cavity, a mixing cavity and an air inlet channel; the inlet channel includes first inlet channel and second inlet channel, during the use, combustion-supporting gas gets into first inlet channel from first inlet channel's air inlet, combustible gas gets into second inlet channel by the air inlet chamber through second inlet channel's air inlet, final combustion-supporting gas and combustible gas are discharged from first inlet channel's gas outlet and second inlet channel's gas outlet respectively, utilize setting up and carry out the homogeneous mixing after backstop at the backstop portion of the mixing mechanism of first inlet channel and second inlet channel's gas outlet department, pass the clearance portion afterwards and get into in the mixing chamber, compare in prior art, can improve combustion-supporting gas and combustible gas's mixing efficiency and homogeneous degree, the big load change of quick response unit, improve unit operating efficiency.
Description
Technical Field
The utility model belongs to the technical field of the gas mixing technique and specifically relates to a gas mixing arrangement is related to.
Background
At present, the arc island gas engine mainly adopts a premixed combustion mode, namely clean air and combustible gas are mixed in a mixing device of an air inlet system outside an engine cylinder in advance, and finally enter the engine cylinder to perform combustion work.
The mixing device of the air inlet system mainly comprises an outer body of the mixing device and an inner core of the mixing device, gas enters the mixing device from a gas inlet of the mixing device, air enters the mixing device from an air inlet of the mixing device, the gas and the air are mixed in a mixing cavity of the mixing device and then are delivered to an engine for combustion through mixed gas, the condition that the air and the gas are mixed unevenly exists in the mixing cavity of the existing mixing device, the large load change of an island engine unit cannot be quickly responded, and the running efficiency of the unit is low.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a gas mixing arrangement to it is inhomogeneous because of the mixture of air and gas to have alleviated current mixing arrangement, and the big load of unable quick response island engine group changes, and the technical problem that the operating efficiency of unit is low.
The utility model provides a gas mixing device, which comprises a mixing device body and a mixing mechanism; the mixing device body comprises an air inlet cavity, a mixing cavity and an air inlet channel; the intake passage includes a first intake passage and a second intake passage;
the mixing cavity is arranged at one end of the mixing device body, and the air outlet of the first air inlet channel and the air outlet of the second air inlet channel are respectively communicated with one end of the mixing cavity; the air inlet of the first air inlet channel is arranged at one end of the mixing device body, which is far away from the mixing cavity, and the air inlet of the second air inlet channel is communicated with the air inlet cavity;
the mixing mechanism is arranged in the air inlet channel and is positioned at the air outlet of the first air inlet channel and the air outlet of the second air inlet channel, the mixing device comprises a stopping part and a gap part, and the stopping part can stop combustion-supporting gas discharged from the air outlet of the first air inlet channel and combustible gas discharged from the air outlet of the second air inlet channel so that the gas and the combustible gas are fully mixed and then pass through the gap part to enter the mixing cavity.
Further, the mixing device body comprises an inner body and an outer body; the inner body is inserted into the inner cavity of the outer body, the outer wall of the inner body and the inner wall of the outer body form an air inlet cavity, and the end face of the inner body extending into the inner cavity of the outer body and the inner wall of the outer body form a mixing cavity;
the inner body comprises an inner sleeve, a spacer, an outer sleeve and a flange;
the outer sleeve comprises a sleeve part and a plurality of extension parts, wherein the extension parts are arranged on one end face of the sleeve part at intervals and extend in the axial direction far away from the sleeve part;
the inner sleeve is partially arranged in the outer sleeve, and a plurality of spacers are connected between the inner sleeve and the inner wall of the sleeve part at intervals along the axial direction of the inner sleeve to form a plurality of alternating first separation zones and second separation zones;
the flange is connected to one end of the extension part far away from the sleeve part, and the end face of the spacer, facing the flange, is connected with the flange;
the extension part corresponds to the first partition area and is used for plugging one side of the first partition area, which is far away from the inner sleeve, and the flange, the first partition area and the extension part form a first air inlet channel; the flange and the second partition form a second air inlet channel;
the flange is provided with a plurality of air inlets which are respectively communicated with the first air inlet channel, and the air inlets form an air inlet of the first air inlet channel; the gap between the two extending parts forms an air inlet of a second air inlet channel, the first air inlet channel and the second air inlet channel form an air outlet of the first air inlet channel and an air outlet of the second air inlet channel at the end face of the inner sleeve extending into the sleeve part, and the mixing mechanism is arranged in the inner cavity of the sleeve part.
Further, the mixing mechanism comprises a connecting shaft and a plurality of blades;
one end of the connecting shaft is connected with the inner sleeve, a plurality of blades are arranged on the circumferential direction of the other end of the connecting shaft at intervals, the blades form a stopping part, and a gap between every two adjacent blades forms a gap part.
Further, the rotation directions of the plurality of blades are the same along the circumferential direction of the connecting shaft.
Further, the inner body comprises a guide ring, and the guide ring is arranged at the joint of the sleeve part and the extension part;
the inner wall of the guide ring comprises a connecting part and an inner wall guide part which are connected;
the connecting portion is connected with the outer wall of the sleeve portion, and the diameter of the inner wall guide portion is gradually reduced along the direction of the extending portion towards the sleeve portion.
Furthermore, the outer wall of the flow guide ring comprises a horizontal part and an outer wall guide part which are connected, and the horizontal part is closer to the extension part relative to the outer wall guide part;
the diameter of the outer wall guide portion gradually increases along the sleeve portion toward the extension portion.
Furthermore, a first mounting groove is formed in the outer wall of the inner sleeve, and one side of the spacer is inserted into the first mounting groove;
and the inner walls of the sleeve part and the extension part are provided with communicated second mounting grooves, and the other side of the spacer is inserted in the second mounting groove.
Furthermore, the spacer comprises a first connecting part, a transition part and a second connecting part which are sequentially connected;
the included angle between the first connecting parts of the two spacers forming the second air inlet channel is smaller than the included angle between the two second connecting parts along the direction towards the center of the inner sleeve;
the included angle between the two transition parts is larger than the included angle between the two second connecting parts.
Further, the air inlet holes are circumferentially arranged along the center of the flange at intervals;
the flange is provided with the water conservancy diversion spare in the center of keeping away from the terminal surface of outer tube, and the water conservancy diversion spare includes cap somatic part and fixed part, and the center of flange is provided with the fixed orifices that corresponds with the fixed part, and the fixed part is installed in the fixed orifices, and along the direction of admitting air towards the inlet port, the cross-sectional area of cap body portion crescent.
Furthermore, the cap body part is of a circular truncated cone structure, and the diameter of the end face, far away from the flange, of the cap body part is smaller than that of the end face, close to the flange, of the cap body part.
The utility model provides a gas mixing device, which comprises a mixing device body and a mixing mechanism; the mixing device body comprises an air inlet cavity, a mixing cavity and an air inlet channel; the intake passage includes a first intake passage and a second intake passage; the mixing cavity is arranged at one end of the mixing device body, and the air outlet of the first air inlet channel and the air outlet of the second air inlet channel are respectively communicated with one end of the mixing cavity; the air inlet of the first air inlet channel is arranged at one end of the mixing device body, which is far away from the mixing cavity, and the air inlet of the second air inlet channel is communicated with the air inlet cavity; the mixing mechanism is arranged in the air inlet channel and is positioned at the air outlet of the first air inlet channel and the air outlet of the second air inlet channel, the mixing device comprises a stopping part and a gap part, and the stopping part can stop combustion-supporting gas discharged from the air outlet of the first air inlet channel and combustible gas discharged from the air outlet of the second air inlet channel so that the gas and the combustible gas are fully mixed and then pass through the gap part to enter the mixing cavity.
During the use, combustion-supporting gas gets into first inlet channel from first inlet channel's air inlet, combustible gas gets into the second inlet channel through the air inlet of second inlet channel by the chamber of admitting air, combustion-supporting gas and combustible gas discharge from the gas outlet of first inlet channel and the gas outlet of second inlet channel respectively finally, utilize setting up and carry out the homogeneous mixing after backstop at the backstop portion of the mixing mechanism of the gas outlet department of first inlet channel and second inlet channel, pass the clearance portion afterwards and get into the mixing chamber in, compare combustion-supporting gas and combustible gas in prior art and directly get into the mixing chamber and mix naturally, can improve combustion-supporting gas and combustible gas's mixing efficiency and homogeneous degree, consequently, can the big load change of quick response unit, improve unit operating efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is an overall structure diagram of a gas mixing device provided in an embodiment of the present invention;
fig. 2 is an exploded view of a gas mixing device provided in an embodiment of the present invention;
fig. 3 is a sectional view of a gas mixing device provided in an embodiment of the present invention;
fig. 4 is a structural diagram of an outer body of a gas mixing device provided in an embodiment of the present invention;
fig. 5 is a structural diagram of an inner body of a gas mixing device according to an embodiment of the present invention;
fig. 6 is an axial view of an inner body of a gas mixing device according to an embodiment of the present invention;
FIG. 7 is a sectional view taken along line A-A of FIG. 6;
FIG. 8 is an enlarged view of portion B of FIG. 7;
fig. 9 is an axial sectional view of an inner body of a gas mixing device according to an embodiment of the present invention;
FIG. 10 is an enlarged view of the portion C of FIG. 9;
fig. 11 is an exploded view of an inner body of a gas mixing device according to an embodiment of the present invention;
fig. 12 is a structural view of an outer sleeve of a gas mixing device according to an embodiment of the present invention;
fig. 13 is a structural view of an inner sleeve of a gas mixing device according to an embodiment of the present invention;
fig. 14 is a structural view of a spacer of a gas mixing device according to an embodiment of the present invention;
fig. 15 is a structural diagram of a flange of a gas mixing device according to an embodiment of the present invention;
fig. 16 is a cross-sectional view of a flow guide ring of a gas mixing device according to an embodiment of the present invention;
FIG. 17 is an enlarged view of portion C of FIG. 16;
fig. 18 is a structural diagram of a diversion member of a gas mixing device according to an embodiment of the present invention.
Icon: 10-endosome; 11-outer sleeve; 12-inner sleeve; 13-a spacer; 14-a flange; 15-blades; 16-a connecting shaft; 17-a flow guide ring; 18-a flow guide; 19-hexagonal nut; 20-external body; 21-a first opening; 22-a first outer body air inlet; 23-a second external air inlet; 24-a second opening;
101-an inlet of a first inlet channel; 102-a first air intake passage; 103-the air outlet of the first air inlet channel; 104 — an intake port of the second intake passage; 105-a second intake passage; 106-the outlet of the second air inlet channel; 111-a sleeve portion; 112-an extension; 113-a second mounting groove; 121-a first mounting groove; 131-a first connection; 132-a transition; 133-a second connecting portion; 141-an air intake; 142-a fixation hole; 171-inner wall guide; 172-a connecting portion; 173-a horizontal portion; 174-outer wall guide; 181-a cap body portion; 182-a fixed part; 183-flow guide through hole; 201-an air inlet cavity; 202-mixing chamber.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1-18, the gas mixing device provided by the present invention comprises a mixing device body and a mixing mechanism; the mixing device body comprises an air inlet cavity 201, a mixing cavity 202 and an air inlet channel; the intake passages include a first intake passage 102 and a second intake passage 105; the mixing cavity 202 is arranged at one end of the mixing device body, and the air outlet 103 of the first air inlet channel and the air outlet 106 of the second air inlet channel are respectively communicated with one end of the mixing cavity 202; the air inlet 101 of the first air inlet channel is arranged at one end of the mixing device body, which is far away from the mixing cavity 202, and the air inlet 104 of the second air inlet channel is communicated with the air inlet cavity 201; the mixing mechanism is arranged in the air inlet channel and is positioned at the air outlet 103 of the first air inlet channel and the air outlet 106 of the second air inlet channel, the mixing device comprises a stopping part and a gap part, and the stopping part can stop combustion-supporting gas exhausted from the air outlet 103 of the first air inlet channel and combustible gas exhausted from the air outlet 106 of the second air inlet channel so that the gas and the combustible gas are fully mixed and then enter the mixing cavity 202 after passing through the gap part.
In practical use, the gas mixing device provided by this embodiment allows combustion-supporting gas to enter the first gas inlet channel 102 from the gas inlet 101 of the first gas inlet channel, combustible gas enters the second air inlet channel 105 through the air inlet 104 of the second air inlet channel from the air inlet cavity 201, finally, combustion-supporting gas and combustible gas are discharged from the air outlet 103 of the first air inlet channel and the air outlet 106 of the second air inlet channel respectively, stopping by using the stopping parts of the mixing mechanisms arranged at the air outlets 106 of the first air inlet channel 102 and the second air inlet channel and then uniformly mixing, and then, the combustion-supporting gas and the combustible gas pass through the gap part and then enter the mixing cavity 202.
In this embodiment, the combustion-supporting gas may be air, and the combustible gas may be natural gas.
As shown in fig. 3, the X direction is a first direction, the Y direction is a second direction, and the first direction is perpendicular to the second direction.
It should be noted that, in this embodiment, the first air inlet channel 102 and the second air inlet channel 105 are arranged along a first direction, the air outlet 103 of the first air inlet channel and the air outlet 106 of the second air inlet channel are respectively communicated with the mixing cavity 202, the mixing cavity 202 is arranged at one end of the mixer device body, the air inlet cavity 201 is annularly arranged around the circumference of the air inlet channel, and the mixer device body is provided with an inlet of the air inlet cavity 201 which is arranged along a second direction and is communicated with the air inlet cavity 201, wherein the first direction is perpendicular to the second direction. The air inlet 101 of the first air inlet channel is arranged at one end, far away from the mixing cavity 202, of the mixing device body, the air inlet 104 of the second air inlet channel is communicated with the air inlet cavity 201, and the air inlet 104 of the second air inlet channel is arranged at one end, far away from the mixing cavity 202, of the air inlet cavity 201.
Specifically, the inlet of the intake chamber 201 is closer to the mixing chamber 202 than the inlet 104 of the second intake passage. In this embodiment, air enters from the air inlet of the first air inlet channel, flows in the first air inlet channel 102 along the first direction, and is discharged from the air outlet 103 of the first air inlet channel, and the fuel gas enters the air inlet cavity 201 from the inlet of the air inlet cavity 201 along the second direction, then flows in the air inlet cavity 201 along the direction opposite to the first direction toward the air inlet 104 of the second air inlet channel, turns at the air inlet 104 of the second air inlet channel to enter the second air inlet channel 105, then flows in the second air inlet channel 105 along the first direction, and is discharged from the air outlet 106 of the second air inlet channel. And the air and the gas are uniformly mixed by a mixing mechanism arranged in the air inlet channel and then enter the mixing cavity 202.
The number of the first air inlet channel 102 and the second air inlet channel 105 is multiple, the first air inlet channel 102 and the second air inlet channel 105 are arranged at intervals, and the first air inlet channel 102 and the second air inlet channel 105 are alternately arranged along the circumferential direction, so that the air and the fuel gas entering the mixing cavity 202 are mixed more uniformly.
As shown in fig. 1 and 2, further, the mixing device body includes an inner body 10 and an outer body 20; the inner body 10 is inserted into the inner cavity of the outer body 20, the outer wall of the inner body 10 and the inner wall of the outer body 20 form an air inlet cavity 201, and the end surface of the inner body 10 extending into the inner cavity of the outer body 20 and the inner wall of the outer body 20 form a mixing cavity 202.
As shown in fig. 3 to fig. 5 to 15, the inner body 10 includes an inner sleeve 12, a spacer 13, an outer sleeve 11, and a flange 14; the outer sleeve 11 includes a sleeve portion 111 and a plurality of extending portions 112, the plurality of extending portions 112 being provided at intervals on one end face of the sleeve portion 111 and extending in an axial direction away from the sleeve portion 111; the inner sleeve 12 is partially arranged in the outer sleeve 11, and a plurality of spacers 13 are connected between the inner sleeve 12 and the inner wall of the sleeve part 111 at intervals along the axial direction of the inner sleeve 12 to form a plurality of alternating first separation zones and second separation zones; the flange 14 is connected to one end of the extension 112 away from the sleeve portion 111, and the end face of the spacer 13 facing the flange 14 is connected to the flange 14; the extension part 112 corresponds to the first partition area and is used for blocking one side of the first partition area, which is far away from the inner sleeve 12, and the flange 14, the first partition area and the extension part 112 form a first air inlet channel 102; the flange 14 and the second separation region form a second inlet passage 105.
The flange 14 is provided with a plurality of air inlet holes 141 respectively communicated with the first air inlet channel 102, and the air inlet holes 141 form an air inlet 101 of the first air inlet channel; the gap between the two extensions 112 forms the inlet 104 of the second inlet channel, the first inlet channel 102 and the second inlet channel 105 form the outlet 103 of the first inlet channel and the outlet 106 of the second inlet channel at the end face of the inner sleeve 12 protruding into the sleeve portion 111, and the mixing mechanism is disposed in the inner cavity of the sleeve portion 111.
Specifically, the inner body 10 includes an inner sleeve 12, a spacer 13, an outer sleeve 11, and a flange 14, the outer sleeve 11 includes a sleeve portion 111 and an extension portion 112, the length of the inner sleeve 12 is greater than the length of the extension portion 112 and less than the sum of the lengths of the sleeve portion 111 and the extension portion 112, one end of the inner sleeve 12 is aligned with an end of the extension portion 112 away from the sleeve portion 111, and the other end of the inner sleeve 12 extends into an internal cavity within the body. The outer wall of the inner sleeve 12 is provided with a plurality of first mounting grooves 121 extending along the axial direction of the inner sleeve 12 at intervals, the inner wall of the sleeve part 111 of the outer sleeve 11 and the inner wall of the extension part 112 are provided with a plurality of second mounting grooves 113 communicating with each other at intervals, the number of the first mounting grooves 121 corresponds to the number of the second mounting grooves 113, one side of the spacer 13 is mounted in the first mounting groove 121, the other side of the spacer 13 is mounted in the second mounting groove 113, and the first and second partition regions which partition the inner sleeve 12 and the sleeve part 111 into a plurality of intervals are fan-shaped along the axial direction of the inner sleeve 12, wherein the extension part 112 corresponds to the first partition region and can block one side, far away from the inner sleeve 12, of the first partition region outside the sleeve part 111.
The flange 14 is connected to an end face of the extension 112 remote from the sleeve portion 111, and an end face of the spacer 13 facing the flange 14 is also connected to an end face of the flange 14. The inner side of the flange 14, the first partition and the extension 112 together enclose a first air inlet channel 102, and the inner side of the flange 14 and the second partition together enclose a second air inlet channel 105.
The flange 14 is provided with a plurality of air inlet holes 141 penetrating through end faces of two sides of the flange, the number of the air inlet holes 141 corresponds to the number and shape of the first air inlet channels 102, and the air inlet holes 141 correspond to and are communicated with one another, the air inlet holes 141 form air inlets 101 of the first air inlet channels of the gas mixing device, meanwhile, a gap between two adjacent extension parts 112 forms air inlets 104 of the second air inlet channels, and one end of the inner sleeve 12 extending into an inner cavity of the sleeve part 111 is surrounded by an outer wall of the inner sleeve 12, the spacer 13 and an inner wall of the sleeve part 111 to form an air outlet 103 of the first air inlet channel and an air outlet 106 of the second air inlet channel.
The mixing mechanism is disposed in the inner cavity of the sleeve portion 111 and is disposed opposite to the air outlet 103 of the first air inlet channel and the air outlet 106 of the second air inlet channel, so that the air discharged from the air outlet 103 of the first air inlet channel and the gas discharged from the air outlet 106 of the second air inlet channel can act on the stop portion of the mixing mechanism, and after being uniformly mixed, the air enters the mixing cavity 202 from the gap portion and is then output from the mixed gas outlet for use.
Meanwhile, as shown in fig. 1, 2 and 3, the outer body 20 has a cylindrical structure with an inner cavity, one end of the outer body 20 is provided with a first opening 21, the other opposite end is provided with a second opening 24, and a side wall of the outer body 20 is provided with a first outer body air inlet 22 and a second outer body air inlet 23. The inner body 10 is loaded into the inner cavity of the outer body 20 from the first opening 21 of the outer body 20, the flange 14 fits into the first opening 21 of the outer body 20 and can form a seal, while the sleeve portion 111 distal to the extension 112 can fit into and form a seal with the inner wall of the outer body 20. An air inlet cavity 201 is defined by the inner side wall of the flange 14, the outer wall of the inner body 10 and the inner wall of the outer body 20, a mixing cavity 202 is defined by the end surface of the sleeve part 111 of the inner body 10 far away from the extension part 112 and the inner wall of the outer body 20, and a mixed gas outlet of the mixing cavity 202 is formed by the second opening 24 of the outer body 20.
In this embodiment, the inner sleeve 12 and the outer sleeve 11 are coaxially disposed.
In this embodiment, air enters from the air inlet 101 of the first air inlet channel, gas enters from the first outer body air inlet 22 and/or the second outer body air inlet 23, and passes through the air inlet cavity 201, and then enters the second air inlet channel 105 after passing through the air inlet 104 of the second air inlet channel, and after the air and the gas are uniformly mixed by the mixing mechanism, the air and the gas enter the mixing cavity 202 and then are output through a mixed gas outlet on the outer body 20 for combustion.
Further, the mixing mechanism includes a connecting shaft 16 and a plurality of blades 15;
one end of the connecting shaft 16 is connected with the inner sleeve 12, the plurality of blades 15 are arranged in the circumferential direction of the other end of the connecting shaft 16 at intervals, the blades 15 form stopping parts, and gaps between every two adjacent blades 15 form gap parts.
Specifically, one end of the connecting portion 172 is connected to the center of the inner sleeve 12, and a plurality of blades 15 are circumferentially arranged at intervals at the other end, so that the gas discharged from the gas outlets 106 of the first gas inlet channel 102 and the second gas inlet channel can act on the blades 15, block the combustion-supporting gas and the combustible gas, and are directly discharged to the mixing cavity 202 side by side, so that the air and the fuel gas can be fully mixed.
The plurality of blades 15 are aligned in the circumferential direction so that the air and the gas can rotate at the same angle after acting on the blades 15, and can be mixed while gradually moving in the direction of the mixing chamber 202, thereby improving the mixing effect.
In this embodiment, the number of the blades 15 is 6, and the blades are uniformly distributed along the circumferential direction of the connecting shaft 16.
As shown in fig. 7, 8, 16 and 17, further, the inner body 10 includes a deflector ring 17, the deflector ring 17 being disposed at the junction of the sleeve portion 111 and the extension portion 112; the inner wall of the deflector ring 17 comprises a connecting part 172 and an inner wall guide part 171 which are connected; the connecting portion 172 is connected to the outer wall of the sleeve portion 111, and the diameter of the inner wall guide 171 is gradually reduced along the extension portion 112 toward the sleeve portion 111.
Further, the outer wall of the deflector ring 17 includes a horizontal portion 173 and an outer wall guide portion 174 connected, and the horizontal portion 173 is closer to the extension portion 112 than the outer wall guide portion 174; the diameter of the outer wall guide 174 gradually increases along the sleeve portion 111 toward the extension 112.
Specifically, the inner body 10 further includes a baffle ring 17, the baffle ring 17 is disposed at a joint of the sleeve portion 111 and the extension portion 112 of the outer sleeve 11, the gas in the gas inlet chamber 201 can turn when entering the second gas inlet passage 105 from the gas inlet 104 of the second gas inlet passage, the gas is likely to generate gas flow turbulence during the turning process, and in order to prevent the gas from generating turbulence at the gas inlet 104 of the second gas inlet passage, the baffle ring 17 is disposed at the joint of the sleeve portion 111 and the extension portion 112, and an inner wall guide portion 171 is disposed on an inner wall of the baffle ring 17, the gas gradually transits along the first direction when entering the second gas inlet passage 105 along the flow direction of the gas, so as to avoid gas turbulence caused by the gas directly colliding with the end face of the sleeve portion 111, and influence on the mixing effect.
Meanwhile, the outer wall of the baffle ring 17 includes a horizontal portion 173 and an outer wall guide portion 174, the diameter of the horizontal portion 173 is kept constant, the outer wall guide portion 174 is connected to one end of the horizontal portion 173 away from the sleeve portion 111, and the diameter of one end of the outer wall guide portion 174 away from the horizontal portion 173 is smaller than that of the other end of the outer wall guide portion, so that when gas flows toward the gas inlet 104 of the second gas inlet channel after entering the gas inlet cavity 201 from the gas inlet of the outer body 20, the outer wall guide portion 174 can be gradually used to transition toward the horizontal portion 173, thereby realizing smooth transition of gas flow and further avoiding disturbance of gas flow.
Further, the number of the spacers 13 is 16.
Specifically, in the present embodiment, the number of the spacers 13 is 16, one side of each spacer 13 is connected to the outer wall of the inner sleeve 12 at intervals, one part of the other side of the inner sleeve 12 in the length direction is connected to the inner wall of the sleeve portion 111, the other part of the other side of the inner sleeve is connected to both sides of the extension portion 112, the number of the extension portions 112 is 8, and the extension portions 112 are uniformly distributed on the end surface of the sleeve portion 111, so that 8 first air inlet channels 102 and 8 second air inlet channels 105 are formed, the first air inlet channels 102 and the second air inlet channels 105 are alternately arranged, the flange 14 is provided with air inlet holes 141 annularly arranged around the center, and the air inlet holes 141 and the first air inlet channels 102 are in one-to-.
As shown in fig. 9, 10 and 14, further, the spacer 13 includes a first connecting portion 131, a transition portion 132 and a second connecting portion 133 connected in this order;
the angle between the first connection 131 of the two septa 13 forming the second air inlet channel 105 is smaller than the angle between the two second connection 133 along the direction towards the center of the inner sleeve 12;
the angle between the two transition portions 132 is larger than the angle between the two second connection portions 133.
As shown in fig. 10, in the present embodiment, the partition 13 includes two partitions 13 that sequentially connect the first connecting portion 131, the transition portion 132 and the second connecting portion 133, and none of the two partitions are in a same plane, and as viewed along the axial direction of the inner sleeve 12, an included angle between the two partitions 13 that surround the second air inlet channel 105 gradually changes, and along a direction toward the center of the inner sleeve 12, an included angle between the two second connecting portions 133 is a1, an included angle between the two transition portions 132 is a2, and an included angle between the two first connecting portions 131 is a3, where a1< a3< a 2. This has the advantage that when gas enters the second inlet channel 105 from the inlet 104 of the second inlet channel, the gas can act on the transition portion 132, and the transition portion 132 can act on the gas to prevent the gas from directly entering the second inlet channel and then being disturbed.
As shown in fig. 7, 11 and 18, further, the air inlet holes 141 are circumferentially spaced along the center of the flange 14; the flange 14 is provided with a flow guide member 18 at a center thereof away from the end surface of the outer sleeve 11, the flow guide member 18 includes a cap portion 181 and a fixing portion 182, the flange 14 is provided at a center thereof with a fixing hole 142 corresponding to the fixing portion 182, and the fixing portion 182 is installed in the fixing hole 142 such that a cross-sectional area of the cap portion 181 is gradually increased in an air intake direction toward the air intake hole 141.
Specifically, in actual use, the flange 14 of the inner body 10 of the gas mixing device is connected to an air inlet pipe, the flange 14 is provided with a plurality of air inlet holes 141 annularly arranged around the circumference of the center, the flow guide member 18 includes a cap portion 181 and a fixing portion 182, the center of the flange 14 is provided with a fixing hole 142 corresponding to the fixing portion 182, the fixing portion 182 is installed in the fixing hole 142, and the cross-sectional area of the cap portion 181 gradually increases along the air inlet direction toward the air inlet holes 141. When air enters each air inlet hole 141, the cap body part 181 of the flow guide element 18 is used for guiding the air, so that the air turbulence caused by direct impact of the air and the outer side surface of the flange 14 is avoided.
It should be noted that the end surface of the cap 181, which is connected to the flange 14, is aligned with the edge of the air inlet hole 141, which is close to the center of the flange 14, and this arrangement has the advantage that turbulence of the air entering the first air inlet passage 102 can be further avoided.
In this embodiment, a flow guide through hole 183 is formed in the center of the flow guide 18, a through hole is also formed in the center of the inner sleeve 12, a plurality of blades 15 are fixedly connected to one end of the inner sleeve 12 extending into the inner cavity of the sleeve portion 111, a fixing portion 182 of the flow guide 18 is installed in the fixing hole 142 of the flange 14, the other end of the connecting shaft 16 is sequentially inserted into the through hole of the inner sleeve 12, the flow guide through hole 183 and extends out of the end face of the flow guide 18 far away from the flange 14, a thread is formed on the end portion of the connecting shaft 16, and the flow guide 18 is fixed through a hexagonal nut 19, so that the inner bodies.
Preferably, the cap portion 181 is of a frustum structure, and the diameter of the end surface of the cap portion 181 far away from the flange 14 is smaller than the diameter of the end surface of the cap portion 181 close to the flange 14.
Of course, the cap portion 181 may be formed in a polygonal shape, and the cross-sectional area thereof gradually increases in the air intake direction toward the air intake hole 141, so that the air taken into the air intake hole 141 can be guided to prevent turbulence.
The utility model provides a gas mixing device, which comprises a mixing device body and a mixing mechanism; the mixing device body comprises an air inlet cavity 201, a mixing cavity 202 and an air inlet channel; the intake passages include a first intake passage 102 and a second intake passage 105; the mixing cavity 202 is arranged at one end of the mixing device body, and the air outlet 103 of the first air inlet channel and the air outlet 106 of the second air inlet channel are respectively communicated with one end of the mixing cavity 202; the air inlet 101 of the first air inlet channel is arranged at one end of the mixing device body, which is far away from the mixing cavity 202, and the air inlet 104 of the second air inlet channel is communicated with the air inlet cavity 201; the mixing mechanism is arranged in the air inlet channel and is positioned at the air outlet 103 of the first air inlet channel and the air outlet 106 of the second air inlet channel, the mixing device comprises a stopping part and a gap part, and the stopping part can stop combustion-supporting gas exhausted from the air outlet 103 of the first air inlet channel and combustible gas exhausted from the air outlet 106 of the second air inlet channel so that the gas and the combustible gas are fully mixed and then enter the mixing cavity 202 after passing through the gap part.
When the gas turbine is used, combustion-supporting gas enters the first gas inlet channel 102 from the gas inlet 101 of the first gas inlet channel, combustible gas enters the second gas inlet channel 105 from the gas inlet cavity 201 through the gas inlet 104 of the second gas inlet channel, finally, the combustion-supporting gas and the combustible gas are discharged from the gas outlet 103 of the first gas inlet channel and the gas outlet 106 of the second gas inlet channel respectively, stop parts of mixing mechanisms arranged at the gas outlets 106 of the first gas inlet channel 102 and the second gas inlet channel are used for stopping and then are uniformly mixed, and then the mixture passes through the gap part and enters the mixing cavity 202.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A gas mixing device is characterized by comprising a mixing device body and a mixing mechanism; the mixing device body comprises an air inlet cavity (201), a mixing cavity (202) and an air inlet channel; the intake passage includes a first intake passage (102) and a second intake passage (105);
the mixing cavity (202) is arranged at one end of the mixing device body, and the air outlet (103) of the first air inlet channel and the air outlet (106) of the second air inlet channel are respectively communicated with one end of the mixing cavity (202); an air inlet (101) of a first air inlet channel is arranged at one end of the mixing device body, which is far away from the mixing cavity (202), and an air inlet (104) of a second air inlet channel is communicated with the air inlet cavity (201);
the mixing mechanism is arranged in the air inlet channel and is positioned at the air outlet (103) of the first air inlet channel and the air outlet (106) of the second air inlet channel, the mixing device comprises a stopping part and a gap part, and the stopping part can stop combustion-supporting gas discharged from the air outlet (103) of the first air inlet channel and combustible gas discharged from the air outlet (106) of the second air inlet channel so that the gas and the combustible gas are fully mixed and then pass through the gap part and then enter the mixing cavity (202).
2. Gas mixing device according to claim 1, characterized in that said mixing device body comprises an inner body (10) and an outer body (20); the inner body (10) is inserted into the inner cavity of the outer body (20), the outer wall of the inner body (10) and the inner wall of the outer body (20) form an air inlet cavity (201), and the end face of the inner body (10) extending into the inner cavity of the outer body (20) and the inner wall of the outer body (20) form a mixing cavity (202);
the inner body (10) comprises an inner sleeve (12), a spacer (13), an outer sleeve (11) and a flange (14);
the outer sleeve (11) comprises a sleeve part (111) and a plurality of extension parts (112), wherein the extension parts (112) are arranged on one end face of the sleeve part (111) at intervals and extend in the axial direction far away from the sleeve part (111);
the inner sleeve (12) is partially arranged in the outer sleeve (11), and a plurality of spacers (13) are connected between the inner sleeve (12) and the inner wall of the sleeve part (111) at intervals along the axial direction of the inner sleeve (12) to form a plurality of alternating first separation zones and second separation zones;
the flange (14) is connected to one end of the extension part (112) far away from the sleeve part (111), and the end face of the spacer (13) facing the flange (14) is connected to the flange (14);
the extension part (112) corresponds to the first partition area and is used for blocking one side of the first partition area away from the inner sleeve (12), and the flange (14), the first partition area and the extension part (112) form the first air inlet channel (102); the flange (14) and the second partition forming the second air intake passage (105);
the flange (14) is provided with a plurality of air inlet holes (141) which are respectively communicated with the first air inlet channel (102), and the air inlet holes (141) form an air inlet (101) of the first air inlet channel; the gap between the two extensions (112) forms the inlet opening (104) of a second inlet channel, the first inlet channel (102) and the second inlet channel (105) form the outlet opening (103) of the first inlet channel and the outlet opening (106) of the second inlet channel at the end face of the inner sleeve (12) protruding into the sleeve section (111), and the mixing device is arranged in the inner cavity of the sleeve section (111).
3. Gas mixing device according to claim 2, wherein said mixing means comprise a connecting shaft (16) and a plurality of blades (15);
one end of the connecting shaft (16) is connected with the inner sleeve (12), a plurality of blades (15) are arranged in the circumferential direction of the other end of the connecting shaft (16) at intervals, the blades (15) form the stopping part, and a gap between every two adjacent blades (15) forms the gap part.
4. Gas mixing device according to claim 3, characterized in that the plurality of blades (15) have the same direction of rotation in the circumferential direction of the connecting shaft (16).
5. Gas mixing device according to claim 2, wherein said inner body (10) comprises a deflector ring (17), said deflector ring (17) being arranged at the junction of said sleeve portion (111) and said extension (112);
the inner wall of the guide ring (17) comprises a connecting part (172) and an inner wall guide part (171) which are connected;
the connecting portion (172) is connected to an outer wall of the sleeve portion (111), and a diameter of the inner wall guide portion (171) is gradually reduced along the extension portion (112) toward the sleeve portion (111).
6. Gas mixing device according to claim 5, wherein the outer wall of the deflector ring (17) comprises a horizontal portion (173) and an outer wall guide (174) connected, the horizontal portion (173) being closer to the extension (112) than the outer wall guide (174);
the outer wall guide (174) has a diameter that gradually increases along the sleeve portion (111) toward the extension (112).
7. The gas mixing device as recited in claim 2, characterized in that a first mounting groove (121) is formed on the outer wall of the inner sleeve (12), and one side of the spacer (13) is inserted into the first mounting groove (121);
and a second mounting groove (113) communicated with the inner wall of the sleeve part (111) and the inner wall of the extension part (112) is formed in the inner wall of the sleeve part, and the other side of the spacer (13) is inserted into the second mounting groove (113).
8. Gas mixing device according to claim 2, characterized in that said spacer (13) comprises a first connection portion (131), a transition portion (132) and a second connection portion (133) connected in sequence;
in the direction towards the center of the inner sleeve (12), the included angle between the first connecting parts (131) of the two septa (13) forming the second air inlet channel (105) is smaller than the included angle between the two second connecting parts (133);
the included angle between the two transition portions (132) is larger than the included angle between the two second connecting portions (133).
9. The gas mixing device according to claim 2, characterized in that the inlet holes (141) are circumferentially spaced along the centre of the flange (14);
the flange (14) is far away from the center of the end face of the outer sleeve (11) is provided with a flow guide piece (18), the flow guide piece (18) comprises a cap body portion (181) and a fixing portion (182), the center of the flange (14) is provided with a fixing hole (142) corresponding to the fixing portion (182), the fixing portion (182) is installed in the fixing hole (142), and the cross-sectional area of the cap body portion (181) is gradually increased along the air inlet direction of the air inlet hole (141).
10. The gas mixing device according to claim 9, characterized in that the cap body (181) is of a circular truncated cone structure, and the diameter of the end face of the cap body (181) far away from the flange (14) is smaller than the diameter of the end face of the cap body (181) near the flange (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021468453.4U CN212644682U (en) | 2020-07-22 | 2020-07-22 | Gas mixing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021468453.4U CN212644682U (en) | 2020-07-22 | 2020-07-22 | Gas mixing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114738797A (en) * | 2022-04-28 | 2022-07-12 | 夏语 | Combustion chamber of gas turbine |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114738797A (en) * | 2022-04-28 | 2022-07-12 | 夏语 | Combustion chamber of gas turbine |
| CN114738797B (en) * | 2022-04-28 | 2024-04-26 | 广州发展南沙电力有限公司 | Combustion chamber of gas turbine |
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