CN220758716U

CN220758716U - Natural gas hydrogen-adding and mixing device

Info

Publication number: CN220758716U
Application number: CN202322413911.4U
Authority: CN
Inventors: 韩民; 赵连宽; 王雨
Original assignee: Okay Energy Technology Tianjin Co ltd
Current assignee: Okay Energy Technology Tianjin Co ltd
Priority date: 2023-09-06
Filing date: 2023-09-06
Publication date: 2024-04-12
Anticipated expiration: 2033-09-06

Abstract

The utility model relates to the technical field of natural gas hydrogen doping, in particular to a natural gas hydrogen doping and mixing device, which comprises a machine body, wherein an L-shaped air inlet pipe is fixedly sleeved on one side of the lower end of the machine body, a power mechanism is arranged on one side of the L-shaped air inlet pipe, a worm is arranged on the power mechanism, a first worm wheel and a second worm wheel are meshed on one side of the worm, an air suction mechanism is arranged in the middle of the upper end of the first worm wheel, and a cleaning mechanism is arranged in the middle of the lower end of the second worm wheel. The utility model can filter the hydrogen entering the natural gas hydrogen-blending device, and avoid the impurity carried in the hydrogen entering the natural gas hydrogen-blending device, thereby ensuring the quality of the natural gas hydrogen-blending device after mixing the natural gas and the hydrogen, cleaning the screen, and avoiding the influence of the screen blockage on the conveying efficiency of the hydrogen.

Description

Natural gas hydrogen-adding and mixing device

Technical Field

The utility model relates to the technical field of natural gas hydrogen blending, in particular to a natural gas hydrogen blending device.

Background

The natural gas hydrogen-adding and mixing device is a device for mixing natural gas and hydrogen in a certain proportion, and the natural gas and hydrogen are mixed in a certain proportion to obtain substitute gas fuel.

The natural gas hydrogen mixing arrangement that mixes of current chinese patent publication No. CN214345667U includes: the device comprises an inlet section, a tapered transition section, an outlet section, a first air inlet flow passage and a second air inlet flow passage. The beneficial effects of the utility model are as follows: the natural gas hydrogen-adding mixing device provided by the utility model has no flow channel inside, so that the structure is greatly simplified, and the manufacturing difficulty of the flow channel is reduced; the whole structure is similar to a frustum, so that the slow transition of the size of the runner is realized; the direction of the mixed gas outlet of the device is the same as the rotation axis of the integral structure, and a flow baffle plate perpendicular to the direction of the rotation axis is not arranged, so that the pressure drop loss can be reduced; the device is not provided with an internal current carrier, and has more sufficient mixing space relative to the scheme of arranging the current carrier; the device is through setting up the convergent changeover portion, with mixing arrangement wholly divide into entrance, convergent changeover portion, export section three parts, realizes the slow transition of runner size, reduces the pressure drop loss that the size suddenly changes and causes, also can avoid producing local high-speed region.

When the existing natural gas hydrogen-adding and mixing device mixes hydrogen with natural gas, the hydrogen entering the natural gas hydrogen-adding and mixing device cannot be filtered, so that impurities are easily carried in the hydrogen entering the natural gas hydrogen-adding and mixing device, the quality of the mixed natural gas and hydrogen cannot be guaranteed, and improvement is needed.

Disclosure of Invention

The utility model aims to overcome the defect that the existing natural gas hydrogen-adding gas mixing device does not have the function of filtering hydrogen, so that the hydrogen entering the natural gas hydrogen-adding gas mixing device is easy to be doped with impurities, and the quality of the mixed natural gas and hydrogen is reduced.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the natural gas hydrogen-adding and gas-mixing device comprises a machine body, wherein an L-shaped air inlet pipe is fixedly sleeved on one side of the lower end of the machine body, a power mechanism is arranged on one side of the L-shaped air inlet pipe, a worm is arranged on the power mechanism, a first worm wheel and a second worm wheel are meshed on one side of the worm, an air suction mechanism is arranged in the middle of the upper end of the first worm wheel, and a cleaning mechanism is arranged in the middle of the lower end of the second worm wheel;

the utility model discloses a cleaning machine for the kitchen, including L shape intake pipe, fan blade, cleaning mechanism, brush, fan blade, cleaning mechanism, driving shaft rotation cup joints at the middle part of screen cloth, the lower extreme of driving shaft is provided with cleans the board, the upper end both sides of cleaning the board all are provided with the brush, and two brushes are contradicted respectively in the lower extreme both sides of screen cloth in L shape intake pipe, be equipped with the fan blade on the mechanism that induced drafts, the fan blade sets up in L shape intake pipe, the fan blade is located the top of screen cloth, it is equipped with the transmission shaft to clean the mechanism, the transmission shaft rotates the middle part of cup jointing at the screen cloth, the lower extreme of transmission shaft is provided with cleans the board, it all is provided with the brush to clean the upper end both sides of board.

Preferably, in order to provide power for the operation of mechanism and the cleaning mechanism induced drafts, power unit includes the motor of fixed mounting in L shape intake pipe one side, the terminal fixedly connected with drive conical gear of output shaft of motor, the lower extreme one side meshing of drive conical gear has the transmission conical gear, one end of worm runs through one side and the fixed connection in one side middle part of transmission conical gear of L shape intake pipe, one side of L shape intake pipe is fixed with the fixed box, motor, drive conical gear and transmission conical gear all are located the fixed box.

Preferably, in order to inhale the powerful L shape intake pipe of hydrogen and carry it to the organism in, induced draft mechanism includes the first pivot at first worm wheel upper end middle part of fixed connection, flabellum fixed connection is in the upper end of first pivot, first bearing has been cup jointed in the rotation in the first pivot, the both ends of first bearing all are fixed with first horizontal pole, and the other end of two first horizontal poles is fixed connection respectively on the relative inner wall of L shape intake pipe.

Preferably, in order to clean the screen cloth, avoid the screen cloth to block up the conveying efficiency that influences hydrogen, clean the mechanism and include the second pivot of fixed connection at second worm wheel lower extreme middle part, the lower extreme of second pivot is fixed with the minor diameter gear, one side meshing of minor diameter gear has the major diameter gear, major diameter gear fixed connection is in the upper end of transmission shaft.

Preferably, in order to bear the second rotating shaft, the second rotating shaft can rotate stably when rotating, two second cross bars are symmetrically and fixedly connected to the opposite inner walls of the L-shaped air inlet pipe, second bearings are fixedly connected to the opposite ends of the two second cross bars together, and the second rotating shaft is rotatably sleeved in the second bearings.

Preferably, in order to increase the stability of the L-shaped air inlet pipe in the machine body, the upper end and the lower end in the machine body are correspondingly and fixedly connected with two fixing rods, the opposite ends of the two fixing rods are fixedly connected with fixing rings together, and the fixing rings are fixedly sleeved on the L-shaped air inlet pipe.

Preferably, in order to enable the hydrogen to be uniformly mixed with the natural gas, a guide vane assembly and a baffle plate assembly are arranged in the machine body, the guide vane assembly is correspondingly arranged on one side of the L-shaped air inlet pipe, the baffle plate assembly is correspondingly arranged on one side of the guide vane assembly, a U-shaped pipeline is arranged at the upper end of the machine body, two ends of the U-shaped pipeline are penetrated through the upper end of the machine body, and a differential pressure gauge is arranged on the U-shaped pipeline.

Compared with the prior art, the utility model has the beneficial effects that:

1. through the use of the screen mesh and the air suction mechanism, hydrogen can be strongly conveyed into the natural gas hydrogen-adding and mixing device, hydrogen entering the natural gas hydrogen-adding and mixing device can be filtered, and impurities carried by the hydrogen are prevented from entering the natural gas hydrogen-adding and mixing device, so that the quality of the natural gas hydrogen-adding and mixing device after mixing the natural gas with the hydrogen can be ensured;

2. through the use of the cleaning mechanism, the brush can be driven to clean the screen mesh in the process of conveying the hydrogen, so that the influence of the screen mesh blockage on the conveying efficiency of the hydrogen is avoided, the mixing quality of the natural gas and the hydrogen is ensured, and meanwhile, the conveying efficiency of the hydrogen to the natural gas hydrogen-adding and mixing device is ensured;

in summary, the utility model can filter the hydrogen entering the natural gas hydrogen-blending device, and avoid the impurity carried in the hydrogen entering the natural gas hydrogen-blending device, thereby ensuring the quality of the natural gas hydrogen-blending device after mixing the natural gas and the hydrogen, cleaning the screen, and avoiding the influence of the screen blockage on the conveying efficiency of the hydrogen.

Drawings

FIG. 1 is a connection structure diagram of a natural gas hydrogen-adding gas mixing device according to the present utility model;

FIG. 2 is a schematic diagram of the internal structure of the natural gas hydrogen-blending device according to the present utility model;

FIG. 3 is a schematic view of the internal structure of an L-shaped air inlet pipe of the natural gas hydrogen-adding and mixing device;

FIG. 4 is an enlarged view of the portion A of the natural gas hydrogen blending device according to the present utility model;

fig. 5 is an enlarged view of a portion B of the natural gas hydrogen blending device according to the present utility model.

In the figure: the device comprises a machine body, a 2L-shaped air inlet pipe, a 3 fixed box, a 4 motor, a 5-driven conical gear, a 6-driven conical gear, a 7 worm, a 8 first worm gear, a 9 first rotating shaft, 10 fan blades, a 11 first bearing, a 12 first cross rod, a 13 second worm gear, a 14 second rotating shaft, a 15 second bearing, a 16 second cross rod, a 17 small-diameter gear, a 18 large-diameter gear, a 19 transmission shaft, a 20 cleaning plate, a 21 brush, a 22 screen, 23 exhaust holes, a 24 fixed ring, a 25 fixed rod, a 26 guide vane assembly, a 27 baffle plate assembly, a 28U-shaped pipeline and a 29 differential pressure gauge.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1-5, the natural gas hydrogen-mixing device comprises a body 1, wherein both ends of the body 1 are all through-arranged, the body 1 is equipment connected to a natural gas pipeline, the natural gas pipeline can be used for conveying natural gas into the body 1 through the through-arrangement of both ends of the body 1, then the mixed natural gas and hydrogen are conveyed into corresponding pipelines through the operation of matched parts in the body 1, the mixed natural gas and hydrogen are fixedly sleeved with an L-shaped air inlet pipe 2 from one side of the lower end of the body 1, a plurality of exhaust holes 23 are formed in the L-shaped air inlet pipe 2, the exhaust holes 23 are all positioned in the body 1, the lower end of the L-shaped air inlet pipe 2 is connected to a hydrogen pipeline, one end of the L-shaped air inlet pipe 2 positioned in the body 1 is in a closed arrangement, the L-shaped air inlet pipe 2 can uniformly convey hydrogen in the hydrogen pipeline into the body 1 through the exhaust holes 23, the natural gas in the machine body 1 can be mixed with hydrogen, the lower end in the L-shaped air inlet pipe 2 is provided with a screen 22, the hydrogen entering the L-shaped air inlet pipe 2 can be filtered through the screen 22, the screen 22 can filter impurities carried in the hydrogen and avoid the impurities contained in the hydrogen entering the machine body 1, so that the quality of the mixed natural gas and hydrogen can be ensured, two fixing rods 25 are correspondingly and fixedly connected at the upper end and the lower end in the machine body 1, two fixing rings 24 are fixedly connected at the opposite ends of the two fixing rods 25 together, the fixing rings 24 are fixedly sleeved on the L-shaped air inlet pipe 2, the fixing rings 24 can be fixed in the machine body 1 through the two fixing rods 25, one end of the L-shaped air inlet pipe 2 positioned in the machine body 1 can be fixed through the fixing rings 24, the stability of the L-shaped intake pipe 2 in the body 1 can be improved.

Referring to fig. 1-4, one side of the L-shaped air intake pipe 2 is provided with a power mechanism, the power mechanism is provided with a worm 7, the worm 7 is rotationally connected in the L-shaped air intake pipe 2, the worm 7 can be driven to rotate through the operation of the power mechanism, the worm 7 can push matched components in the L-shaped air intake pipe 2 to operate, the power mechanism comprises a motor 4 fixedly installed on one side of the L-shaped air intake pipe 2, the tail end of an output shaft of the motor 4 is fixedly connected with a driving bevel gear 5, one side of the lower end of the driving bevel gear 5 is meshed with a transmission bevel gear 6, one end of the worm 7 penetrates one side of the L-shaped air intake pipe 2 and is fixedly connected with the middle of one side of the transmission bevel gear 6, the motor 4 is connected with the matched components, stable operation is facilitated, a program can be set, automatic operation can be realized, the motor 4 can drive the driving bevel gear 5 to rotate, the transmission bevel gear 6 can drive the worm 7 to rotate, one side of the L-shaped air intake pipe 2 is fixedly provided with a fixing box 3, the motor 4, the driving bevel gear 5 and the transmission bevel gear 6 are all located in the fixing box 3, and the motor 4 can be protected from collision by the driving bevel gear 5 and the driving bevel gear 4 when the motor 4 runs.

Referring to fig. 2, 3 and 5, one side of the worm 7 is meshed with a first worm wheel 8 and a second worm wheel 13, an air suction mechanism is arranged in the middle of the upper end of the first worm wheel 8, a fan blade 10 is arranged on the air suction mechanism, the fan blade 10 is arranged in the L-shaped air inlet pipe 2, the fan blade 10 is positioned above a screen 22, the rotation of the worm 7 can simultaneously push the first worm wheel 8 and the second worm wheel 13 to rotate, the rotation of the first worm wheel 8 can provide power for the operation of the air suction mechanism, the operation of the air suction mechanism can drive the fan blade 10 to rotate, the rotation of the fan blade 10 can generate suction force, so that hydrogen can be quickly sucked into the L-shaped air inlet pipe 2, the hydrogen in the L-shaped air inlet pipe 2 can be strongly conveyed into the machine body 1 through a plurality of air exhaust holes 23, the hydrogen can be uniformly conveyed into the machine body 1 to be mixed with natural gas in the machine body 1 for the first time through a plurality of air exhaust holes 23, the air suction mechanism comprises a first rotating shaft 9 fixedly connected to the middle part of the upper end of a first worm wheel 8, a fan blade 10 is fixedly connected to the upper end of the first rotating shaft 9, the first worm wheel 8 rotates to drive the first rotating shaft 9 to rotate, the first rotating shaft 9 rotates to drive the fan blade 10 to rotate, the fan blade 10 rotates to generate suction force, hydrogen in the L-shaped air inlet pipe 2 can be strongly conveyed into the machine body 1 through a plurality of exhaust holes 23, a first bearing 11 is rotationally sleeved on the first rotating shaft 9, first cross rods 12 are fixed at two ends of the first bearing 11, the other ends of the two first cross rods 12 are respectively and fixedly connected to the opposite inner walls of the L-shaped air inlet pipe 2, the first bearing 11 can be fixedly installed in the L-shaped air inlet pipe 2 through the two first cross rods 12, the first bearing 11 can bear the first rotating shaft 9, so that the first shaft 9 can be kept rotating smoothly while rotating.

Referring to fig. 2, 3 and 5, a cleaning mechanism is arranged in the middle of the lower end of the second worm wheel 13, the worm 7 rotates to push the first worm wheel 8 and the second worm wheel 13 to rotate at the same time, the second worm wheel 13 rotates to provide power for the operation of the cleaning mechanism, thereby providing power for the operation of the air suction mechanism and the cleaning mechanism through the rotation of the worm 7, further realizing the purpose that one power source provides power for two structures, effectively saving the consumption of energy, the cleaning mechanism is provided with a transmission shaft 19, the transmission shaft 19 is rotationally sleeved at the middle part of the screen 22, the lower end of the transmission shaft 19 is provided with a cleaning plate 20, both sides of the upper end of the cleaning plate 20 are respectively provided with brushes 21, the two brushes 21 respectively abut against both sides of the lower end of the screen 22, the cleaning mechanism can drive the transmission shaft 19 to rotate, the rotation of the transmission shaft 19 can drive the cleaning plate 20 to operate, the cleaning plate 20 can drive the two brushes 21 to clean the screen 22, the cleaning mechanism comprises a second rotating shaft 14 fixedly connected to the middle part of the lower end of a second worm wheel 13, a small diameter gear 17 is fixed at the lower end of the second rotating shaft 14, one side of the small diameter gear 17 is meshed with a large diameter gear 18, the large diameter gear 18 is fixedly connected to the upper end of a transmission shaft 19, the second worm wheel 13 rotates to drive the second rotating shaft 14 to rotate, the second rotating shaft 14 rotates to drive the small diameter gear 17 to rotate, the small diameter gear 17 rotates to drive the large diameter gear 18 to rotate, the diameter of the small diameter gear 17 is smaller than that of the large diameter gear 18, therefore, the purpose of reducing rotation can be achieved, the large diameter gear 18 can slowly drive the transmission shaft 19 to rotate, the transmission shaft 19 can slowly drive a cleaning plate 20 to operate, the cleaning plate 20 can drive two brushes 21 to clean the screen 22, the problem that the conveying efficiency of hydrogen is affected due to the blocking of the screen 22 is avoided, two second cross bars 16 are symmetrically and fixedly connected to the opposite inner walls of the L-shaped air inlet pipe 2, second bearings 15 are fixedly connected to opposite ends of the two second cross bars 16 together, the second rotating shafts 14 are rotatably sleeved in the second bearings 15, the second bearings 15 can be fixed through the two second cross bars 16, the second bearings 15 can be fixedly installed in the L-shaped air inlet pipe 2, the second rotating shafts 14 can be borne through the second bearings 15, and the second rotating shafts 14 can keep stable rotation during rotation.

Referring to fig. 1 and 2, a guide vane assembly 26 and a baffle plate assembly 27 are arranged in a machine body 1, the guide vane assembly 26 is correspondingly arranged on one side of an L-shaped air inlet pipe 2, the baffle plate assembly 27 is correspondingly arranged on one side of the guide vane assembly 26, the guide vane assembly 26 consists of a fan blade assembly, a sealing pipe and a bracket, the L-shaped air inlet pipe 2 conveys hydrogen into the machine body 1 and is mixed with the natural gas for the first time, the natural gas and the mixed gas passes through the guide vane assembly 26, the guide vane assembly 26 works to form turbulent gas, the guide vane assembly 26 can disturb the stratosphere distribution of the gas, the air flow channel is changed, meanwhile, the second mixing of the hydrogen and the natural gas is realized, the baffle plate assembly 27 is composed of a plurality of stainless steel corrugated plates arranged in staggered layers, the natural gas and the hydrogen after the second mixing can be mixed through the baffle plate assembly 27, so that the mixing precision of the natural gas and the hydrogen can be improved, the upper end of the machine body 1 is provided with a U-shaped pipe 28, two ends of the U-shaped pipe 28 are penetrated through the upper end of the machine body 1, the U-shaped pipe 28 is provided with a differential pressure meter 29, and the differential pressure meter 29 can monitor whether the air pressure in the machine body 1 can be monitored, and the machine body 1 can be judged whether the differential pressure meter is blocked or not.

In the present utility model, when in use: organism 1 installs on natural gas pipeline, natural gas enters into organism 1 through one side of organism 1 and mixes with hydrogen, natural gas and hydrogen are mixed the back and are carried in corresponding pipeline from the opposite side of organism 1, L shape intake pipe 2's lower extreme and hydrogen pipeline are connected, control motor 4 operation through supporting controlgear, motor 4 drives drive conical gear 5 and rotates, drive conical gear 5 promotes transmission conical gear 6 and rotates, transmission conical gear 6 drives worm 7 and rotates, worm 7 can promote first worm wheel 8 and second worm wheel 13 and rotate, first worm wheel 8 drives first pivot 9 and rotates, first pivot 9 drives flabellum 10 and rotates, flabellum 10 rotates and can produce the gas flow, hydrogen powerful suction in the hydrogen pipeline is to L shape intake pipe 2, hydrogen in the L shape intake pipe 2 carries in through a plurality of exhaust holes 23 evenly to organism 1 and mixes with the natural gas, rethread guide vane assembly 26 and baffle assembly 27 carry out the second and mix with the hydrogen is even, it can filter through 22 to get into the hydrogen in the L shape intake pipe 2, worm wheel 8 can drive first worm wheel 8 and second worm wheel 13 and rotate, first pivot 9 drives the flabellum 10 and can produce the gas flow, the big diameter of fan blade 10 rotates, the second diameter of the second worm wheel is avoided, the second worm wheel 14 to drive the filter screen cloth is driven to be rotated, the diameter of the sieve is realized, the large diameter is avoided, the diameter of the sieve is driven to drive the second worm wheel to drive wheel 18 to be changed, and can drive the diameter and can drive the sieve diameter and drive the sieve 18 to rotate, and the sieve diameter is avoided the big, and the diameter is driven to rotate, and can drive the diameter and the diameter is driven to rotate, and can be driven.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The utility model provides a natural gas mixes gas device, includes organism (1), its characterized in that: an L-shaped air inlet pipe (2) is fixedly sleeved on one side of the lower end of the machine body (1), a power mechanism is arranged on one side of the L-shaped air inlet pipe (2), a worm (7) is arranged on the power mechanism, a first worm wheel (8) and a second worm wheel (13) are meshed on one side of the worm (7), an air suction mechanism is arranged in the middle of the upper end of the first worm wheel (8), and a cleaning mechanism is arranged in the middle of the lower end of the second worm wheel (13);

the utility model discloses a cleaning machine for the kitchen, including organism (1), L shape intake pipe (2) and fan blade (10), be provided with a plurality of exhaust holes (23) on organism (1), a plurality of exhaust holes (23) all are located organism (1), the lower extreme in L shape intake pipe (2) is provided with screen cloth (22), worm (7) rotate and connect in L shape intake pipe (2), be equipped with flabellum (10) on the mechanism that induced drafts, flabellum (10) set up in L shape intake pipe (2), flabellum (10) are located the top of screen cloth (22), be equipped with transmission shaft (19) on the mechanism that cleans, transmission shaft (19) rotate and cup joint at the middle part of screen cloth (22), the lower extreme of transmission shaft (19) is provided with cleans board (20), the upper end both sides of cleaning board (20) all are provided with brush (21), and two brush (21) are contradicted respectively in the lower extreme both sides of screen cloth (22).

2. The natural gas hydrogen blending apparatus of claim 1, wherein: the power mechanism comprises a motor (4) fixedly installed on one side of an L-shaped air inlet pipe (2), a driving bevel gear (5) is fixedly connected to the tail end of an output shaft of the motor (4), a transmission bevel gear (6) is meshed on one side of the lower end of the driving bevel gear (5), one end of a worm (7) penetrates through one side of the L-shaped air inlet pipe (2) and is fixedly connected to the middle of one side of the transmission bevel gear (6), a fixed box (3) is fixed on one side of the L-shaped air inlet pipe (2), and the motor (4), the driving bevel gear (5) and the transmission bevel gear (6) are all located in the fixed box (3).

3. The natural gas hydrogen blending apparatus of claim 1, wherein: the air suction mechanism comprises a first rotating shaft (9) fixedly connected to the middle of the upper end of a first worm wheel (8), fan blades (10) are fixedly connected to the upper end of the first rotating shaft (9), a first bearing (11) is rotatably sleeved on the first rotating shaft (9), first cross rods (12) are fixedly arranged at two ends of the first bearing (11), and the other ends of the two first cross rods (12) are fixedly connected to the opposite inner walls of an L-shaped air inlet pipe (2) respectively.

4. The natural gas hydrogen blending apparatus of claim 1, wherein: the cleaning mechanism comprises a second rotating shaft (14) fixedly connected to the middle of the lower end of the second worm wheel (13), a small-diameter gear (17) is fixed to the lower end of the second rotating shaft (14), a large-diameter gear (18) is meshed with one side of the small-diameter gear (17), and the large-diameter gear (18) is fixedly connected to the upper end of a transmission shaft (19).

5. The natural gas hydrogen blending apparatus of claim 4, wherein: two second cross bars (16) are symmetrically and fixedly connected to the opposite inner walls of the L-shaped air inlet pipe (2), second bearings (15) are fixedly connected to the opposite ends of the two second cross bars (16) together, and the second rotating shaft (14) is rotatably sleeved in the second bearings (15).

6. The natural gas hydrogen blending apparatus of claim 1, wherein: two fixing rods (25) are correspondingly and fixedly connected to the upper end and the lower end in the machine body (1), fixing rings (24) are fixedly connected to the opposite ends of the two fixing rods (25) together, and the fixing rings (24) are fixedly sleeved on the L-shaped air inlet pipe (2).

7. The natural gas hydrogen blending apparatus of claim 1, wherein: be provided with water conservancy diversion oar subassembly (26), baffling board subassembly (27) in organism (1), water conservancy diversion oar subassembly (26) correspond one side that sets up in L shape intake pipe (2), baffling board subassembly (27) correspond one side that sets up in water conservancy diversion oar subassembly (26), the upper end of organism (1) is provided with U-shaped pipeline (28), the upper end at organism (1) is all run through at the both ends of U-shaped pipeline (28), be provided with differential pressure gauge (29) on U-shaped pipeline (28).