CN-224207787-U - Hydrogen blending device

CN224207787UCN 224207787 UCN224207787 UCN 224207787UCN-224207787-U

Abstract

The application provides a hydrogen blending device, relates to the technical field of natural gas blending, and is used for improving the mixing effect of natural gas and hydrogen. The hydrogen blending device comprises a natural gas inlet pipe, a hydrogen inlet pipe, a blending pipe and a blending element. The mixing element is arranged in the mixing pipe, the mixing element comprises a first fixed frame and a first blade group, the first fixed frame is provided with a first mixing channel, the first mixing channel is provided with a first mixing inlet and a first mixing outlet, the first blade group is arranged in the first mixing channel and comprises a plurality of first blades and a plurality of second blades, the first blades extend along a first direction, one end of each second blade is connected with one end of each first blade far away from the first mixing inlet, the other end of each second blade extends to the first mixing outlet along a second direction, and the orthographic projection of each first blade on the plane of each second blade overlaps with at least part of the outline of each second blade, wherein the first direction is intersected with the second direction.

Inventors

LIU LU
CHEN JIAN
FAN JUNKANG
Lou juan

Assignees

博思特能源装备（天津）股份有限公司

Dates

Publication Date: 20260508
Application Date: 20250530

Claims (10)

1. A hydrogen blending device, characterized in that the hydrogen blending device comprises: a natural gas inlet pipe having a natural gas inlet and a natural gas outlet; the hydrogen inlet pipe is communicated with the natural gas inlet pipe; A blending tube having a blending inlet and a blending outlet, the blending inlet in communication with the natural gas outlet; The mixing device comprises a mixing pipe, a mixing element and a first blade group, wherein the mixing element is arranged in the mixing pipe, the mixing element comprises a first fixed frame and a first blade group, the first fixed frame is provided with a first mixing channel, the first mixing channel is provided with a first mixing inlet and a first mixing outlet, the first blade group is arranged in the first mixing channel and comprises a plurality of first blades and a plurality of second blades, the first blades and the second blades are arranged at intervals in the height direction of the first mixing channel, the first blades extend along a first direction, one end of the second blades is connected with one end of the first blades far away from the first mixing inlet, the other end of the second blades extends to the first mixing outlet along a second direction, and the orthographic projection of the first blades on the plane where the second blades are arranged overlaps with at least part of the outline of the second blades; wherein the first direction intersects the second direction.
2. The hydrogen blending apparatus of claim 1, wherein the blending element further comprises a second fixed frame having a second blending channel with a second mixing inlet and a second mixing outlet, the second mixing inlet being in communication with the first mixing inlet, and a second blade set disposed within the second blending channel, the second blade set comprising a plurality of third blades and a plurality of fourth blades spaced apart in a height direction of the second blending channel, the third blades extending in a third direction, one end of the fourth blades being connected to an end of the third blades remote from the second mixing inlet, the other end extending in a fourth direction to the second mixing outlet, a plane of the first blades and the second blades intersecting a plane of the third blades and the fourth blades, the fourth blades having a contour that overlaps at least a fourth projection of the fourth blades; wherein the third direction intersects the fourth direction.
3. The hydrogen blending apparatus of claim 2, wherein the blending element further comprises a first sealing plate and a second sealing plate, the first sealing plate being disposed on the outer periphery of the first fixed frame, the second sealing plate being disposed on the outer periphery of the second fixed frame, the first sealing plate and the second sealing plate both being connected to the inner wall of the blending tube.
4. The hydrogen blending apparatus of claim 1, wherein an end of the first blade connected to the second blade is provided with a first bending groove, the first bending groove having a first opening, the first opening being directly opposite the first mixing inlet.
5. The hydrogen blending device of claim 1 or 4, wherein an end of the second blade remote from the first blade is provided with a second bending groove having a second opening opposite the first mixing outlet.
6. The hydrogen blending apparatus of claim 1, wherein the blending element further comprises a support plate and a plurality of the first blade groups, the first blade groups being disposed at intervals in a length direction of the first blending passage, the support plate being located between adjacent two of the first blade groups and being connected to the first blade groups.
7. The hydrogen blending apparatus of claim 1, wherein the blending tube comprises a first blending section, a second blending section, and a third blending section connected in sequence, the cross-sectional area of the first blending section gradually increasing and the cross-sectional area of the third blending section gradually decreasing in the direction from the first blending section to the third blending section, the first blending section being connected to the natural gas inlet pipe, the blending element being disposed within the second blending section.
8. The hydrogen blending device of claim 1, wherein the hydrogen inlet pipe comprises a first connecting pipe section, a second connecting pipe section and a third connecting pipe section which are sequentially communicated, the first connecting pipe section is connected with the peripheral wall of the natural gas inlet pipe, a hydrogen inlet is formed in the first connecting pipe section, the third connecting pipe extends towards a direction close to the natural gas inlet, and a plurality of hydrogen outlets are formed in the peripheral wall of the third connecting pipe section.
9. The hydrogen blending device of claim 8, wherein the third connecting tube segment extends in the same direction as the natural gas inlet tube.
10. The hydrogen blending apparatus of claim 8, wherein a central axis of the third connecting tube segment coincides with a central axis of the natural gas inlet tube.

Description

Hydrogen blending device Technical Field The application relates to the technical field of natural gas hydrogen blending, in particular to a hydrogen blending device. Background The hydrogen energy used as zero-carbon energy source depends on large-scale storage and transportation technology, but pure hydrogen transportation faces challenges such as hydrogen embrittlement of pipeline materials, high leakage risk and the like. The hydrogen blending device can directly reuse the existing pipeline system by uniformly mixing hydrogen to natural gas in proportion (such as 10% -30%), and the single transportation cost is reduced by about 30%. However, because of the large difference between physical properties of hydrogen and natural gas, if the hydrogen and natural gas are unevenly mixed, layering phenomenon is caused, and hydrogen corrosion is caused to the pipeline due to the fact that local hydrogen concentration is too high. Most of the existing hydrogen blending devices have the problems of poor mixing effect, complex structure and the like. Disclosure of utility model In order to solve the technical problems, the application provides a hydrogen blending device for improving the mixing effect of natural gas and hydrogen. In order to achieve the above purpose, the embodiment of the present utility model adopts the following technical scheme: The embodiment of the application provides a hydrogen blending device which comprises a natural gas inlet pipe, a hydrogen inlet pipe, a blending element and a first blade group, wherein the natural gas inlet pipe is provided with a natural gas inlet and a natural gas outlet, the hydrogen inlet pipe is communicated with the natural gas inlet pipe, the blending pipe is provided with a blending inlet and a blending outlet, the blending inlet is communicated with the natural gas outlet, the blending element is arranged in the blending pipe and comprises a first fixed frame and a first blade group, the first fixed frame is provided with a first blending channel, the first blending channel is provided with a first mixing inlet and a first mixing outlet, the first blade group is arranged in the first blending channel, the first blade group comprises a plurality of first blades and a plurality of second blades, the first blades and the second blades are arranged at intervals in the height direction of the first blending channel, the first blades extend along the first direction, the second blades are connected with the first blades in a first end, the first blades are far away from the first mixing inlet, and the second blades extend along the first direction, and the first end of the first blade group is overlapped with the second blade group, and the first blade group is positioned at least partially in the first mixing channel, and the first blade group is positioned at the second end, and the first blade group is positioned at the position far from the first end, and the first blade group is far from the first end. According to the hydrogen blending device provided by the embodiment of the application, the blending element is arranged in the blending pipe, and the extending directions of the first blade and the second blade are intersected, so that the natural gas and the hydrogen flowing out of the natural gas outlet can be divided and changed in direction by the first blade group when flowing through the blending element, the speed gradient in the gas flow is increased, the turbulence intensity can be increased, and hydrogen molecules in the gas flow can collide and exchange with other molecules in the natural gas flow more frequently, so that the blending speed is increased, the blending uniformity is improved, and the blending effect is improved. And the structure is simple, thereby being beneficial to reducing the manufacturing cost of the hydrogen blending device. In one possible implementation manner, the blending element further comprises a second fixed frame and a second blade group, the second fixed frame is provided with a second blending channel, the second blending channel is provided with a second mixing inlet and a second mixing outlet, the second mixing inlet is communicated with the first mixing inlet, the second blade group is arranged in the second blending channel, the second blade group comprises a plurality of third blades and a plurality of fourth blades, the third blades and the fourth blades are arranged at intervals in the height direction of the second blending channel, the third blades extend along a third direction, one end of the fourth blades is connected with one end of the third blades, which is far away from the second mixing inlet, the other end of the fourth blades extends to the second mixing outlet along a fourth direction, a plane where the first blades and the second blades are located intersects with a plane where the third blades and the fourth blades are located, the fourth blades are located with a plane where the fourth blades ar