Natural gas mixing device

Abstract

The utility model provides a natural gas mixing device which comprises a first gas inlet pipe, a second gas inlet pipe, a mixing pipe, a flow guide piece, an inner ring, an outer ring, a first mixing chamber, a second mixing chamber and a splitter plate, according to the gas mixing device, mixed gas flow is primarily mixed through the splitter plate, then the primarily mixed gas flow flows out of the gas outlet of the splitter plate and is jetted on the side wall of the outer ring for secondary mixing, and then the gas flow is subjected to third mixing in the second mixing chamber, so that the gas mixing quality is improved to a great extent; and the stability of the gas heat value is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of mixing equipment, in particular to a natural gas mixing device. Background Art

[0002] When a gas supply company supplies gas to the downstream, the calorific value of natural gas is a relatively important parameter, and the stability of this parameter directly affects the user experience of downstream customers; the calorific value of the natural gas supplied upstream will change accordingly with changes in temperature and humidity; therefore, for companies that are sensitive to calorific value, the instability of the calorific value of the gas is likely to cause an increase in the production scrap rate, which will cause user dissatisfaction and further affect the company's reputation; and the existing method of stabilizing the calorific value is generally to mix gases of different calorific values ​​through a gas mixing device when entering the downstream, so as to achieve calorific value stability; and the existing gas mixing device and the existing gas mixer generally introduce two gases of different calorific values ​​into a container at the same time, and mix them through the diffusion movement between the gases, and this gas mixing method has the problem of uneven mixing. Utility Model Content

[0003] The purpose of the utility model is to design a natural gas mixing device to solve the problems raised by the background technology. To achieve the above purpose, the utility model provides the following technical solutions: including a mixing tube connected to both a first air inlet pipe and a second air inlet pipe and a guide member fixed to the outlet end of the first air inlet pipe, the second air inlet pipe is aligned with the guide member, the mixing tube includes an inner ring and an outer ring connected to the inner ring, a first mixing chamber is provided between the inner ring and the second air inlet pipe, a second mixing chamber connected to the first mixing chamber is provided between the inner ring and the outer ring, a splitter plate for dividing the mixed gas into several streams is provided inside the first mixing chamber, the outlet of the splitter plate is connected to the second mixing chamber and the outlet direction of the splitter plate points to the inner wall of the outer ring.

[0004] Furthermore, the diverter plate is spiral, and the spiral directions at two ends of the diverter plate are opposite.

[0005] Furthermore, a rounded corner is provided in the middle of the diverter plate.

[0006] Furthermore, a first baffle is provided on the outer wall of one end of the inner ring close to the air outlet of the diverter plate, and a second baffle is provided on the inner wall of the outer ring. Gaps are provided between the first baffle and the outer ring and between the second baffle and the inner ring. The first baffle and the second baffle are both located inside the second mixing chamber.

[0007] Furthermore, the guide member includes a guide plate connected to the first air inlet pipe through a connecting column, the guide plate is trumpet-shaped, the second air inlet pipe is aligned with the trumpet mouth of the guide plate, and the first air inlet pipe is aligned with the outer wall of the guide plate.

[0008] Furthermore, the inner ring is provided with a first inclined plate for guiding the mixed gas to the inner wall of the outer ring, and the first inclined plate is located inside the second mixing chamber.

[0009] Furthermore, a plurality of second inclined plates are provided on the outer ring, and the inclination direction of the second inclined plates is away from the flow direction of the mixed airflow.

[0010] Furthermore, one end of the second mixing chamber away from the air outlet of the splitter plate is connected to a plurality of air outlet pipes.

[0011] Furthermore, the inner ring is connected to the outer ring via a trumpet-shaped plate.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model performs primary mixing on the mixed airflow through the splitter plate, and then the initially mixed airflow flows out from the air outlet of the splitter plate and is sprayed on the side wall of the outer ring for secondary mixing, and then performs a third mixing in the second mixing chamber, thereby greatly improving the mixing quality of the gas and ensuring the stability of the calorific value of the fuel gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a cross-sectional schematic diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of the connection structure between the splitter plate and the second air intake pipe.

[0017] Among them: 1. first air inlet pipe; 2. air outlet pipe; 3. connecting column; 4. guide plate; 5. guide member; 6. second inclined plate; 7. splitter plate; 8. first inclined plate; 9. second baffle; 10. second air inlet pipe; 11. first baffle; 12. outer ring; 13. inner ring; 14. mixing tube; 15. second mixing chamber; 16. first mixing chamber; 17. trumpet-shaped plate; 18. rounded corners. DETAILED DESCRIPTION

[0018] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0019] Example: Please refer to Figure 1-2 A natural gas mixing device comprises a mixing tube 14 connected to a first air inlet pipe 1 and a second air inlet pipe 10 and a guide member 5 fixed to an outlet end of the first air inlet pipe 1, the second air inlet pipe 10 is aligned with the guide member 5, the mixing tube 14 comprises an inner ring 13 and an outer ring 12 connected to the inner ring 13, a first mixing chamber 16 is provided between the inner ring 13 and the second air inlet pipe 10, a second mixing chamber 15 connected to the first mixing chamber 16 is provided between the inner ring 13 and the outer ring 12, a splitter plate 7 for dividing the mixed gas into a plurality of streams is provided inside the first mixing chamber 16, an outlet of the splitter plate 7 is connected to the second mixing chamber 15 and an outlet direction of the splitter plate 7 is directed to an inner wall of the outer ring 12, when two gases with different calorific values ​​enter from the first air inlet pipe 1 and the second air inlet pipe 10 respectively, the gas flows into the second mixing chamber 15 and ... The gas is introduced into the first mixing chamber 16 at the same time, and is divided into several streams under the action of the diverter plate 7, and is mixed during the flow in the diverter plate 7, thereby improving the mixing quality of the gas per unit volume, and the several streams after the preliminary mixing will flow out of the gas outlet of the diverter plate 7 and be sprayed on the side wall of the outer ring 12 for secondary mixing, and then be mixed for the third time in the second mixing chamber 15, thereby greatly improving the mixing quality of the gas and ensuring the stability of the calorific value of the gas; in addition, one end of the second mixing chamber 15 away from the gas outlet of the diverter plate 7 is connected to several gas outlet pipes 2, and the gas outlet pipe 2 is connected to the downstream gas supply system, thereby meeting the downstream customers' demand for gas with stable calorific value; the inner ring 13 is connected to the outer ring 12 by a trumpet-shaped plate 17, thereby increasing the diameter of the gas outlet pipe 2 to facilitate the transportation of gas.

[0020] In the present embodiment, the diverter plate 7 is in a spiral shape, thereby increasing the flow time of a single airflow, and further increasing the mixing time inside the single airflow, thereby improving the mixing quality of the gas; and the spiral directions at both ends of the diverter plate 7 are opposite, and a fillet 18 is provided in the middle of the diverter plate 7, and the mixed gas will impact on the fillet 18 to disturb the mixed gas, thereby further improving the mixing quality of the initial mixing of the mixed gas; a first baffle 11 is provided on the outer wall of one end of the inner ring 13 close to the air outlet of the diverter plate 7, and a second baffle 9 is provided on the inner wall of the outer ring 12, and gaps are provided between the first baffle 11 and the outer ring 12 and between the second baffle 9 and the inner ring 13, and the first baffle 11 and the second baffle 9 are both located inside the second mixing chamber 15, thereby forming a Z-shaped flow channel, which increases the mixing time of the airflow sprayed on the inner wall of the outer ring 12, thereby improving The mixing quality of the secondary mixing; in addition, the guide member 5 includes a guide plate 4 connected to the first air inlet pipe 1 through a connecting column 3, the guide plate 4 is trumpet-shaped, the second air inlet pipe 10 is aligned with the trumpet mouth of the guide plate 4, and the first air inlet pipe 1 is aligned with the outer wall of the guide plate 4, which is conducive to the two airflows with different calorific values ​​flowing into the first mixing chamber 16; it plays a diffusion role before mixing; and the inner ring 13 is provided with a first inclined plate 8 for guiding the mixed gas to the inner wall of the outer ring 12, the first inclined plate 8 is located inside the second mixing chamber 15, and the outer ring 12 is provided with a plurality of second inclined plates 6, the second inclined plates 6 are inclined to point away from the direction of the mixed gas flow, thereby producing an effect similar to a "Tesla valve", disturbing and slowing down the gas after the secondary mixing, thereby further improving the mixing quality of the mixed gas and ensuring the stability of the calorific value of the gas.

[0021] How it works

[0022] When two gases with different calorific values ​​enter from the first air inlet pipe 1 and the second air inlet pipe 10 respectively, they will be simultaneously introduced into the first mixing chamber 16 under the action of the guide plate 4, and divided into several streams under the action of the diverter plate 7, and mixed during the flow on the diverter plate 7, thereby improving the mixing quality of the gas per unit volume, and the several streams after the preliminary mixing will flow out from the outlet of the diverter plate 7 and spray on the side wall of the outer ring 12 for secondary mixing, and then under the action of the first inclined plate 8 and the second inclined plate 6 in the second mixing chamber 15, an effect similar to a "Tesla valve" is produced, which disturbs and slows down the gas after the secondary mixing, thereby further improving the mixing quality of the mixed gas.

[0023] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an element centered thereon. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an element centered thereon. The terms "upper", "lower", "left", "right", "front", "rear" and similar expressions used herein are for illustrative purposes only.

[0024] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A natural gas mixing device, characterized in that: The invention comprises a mixing tube (14) connected to both a first air inlet pipe (1) and a second air inlet pipe (10) and a guide member (5) fixed to the air outlet end of the first air inlet pipe (1), the second air inlet pipe (10) is aligned with the guide member (5), the mixing tube (14) comprises an inner ring (13) and an outer ring (12) connected to the inner ring (13), a first mixing chamber (16) is provided between the inner ring (13) and the second air inlet pipe (10), a second mixing chamber (15) connected to the first mixing chamber (16) is provided between the inner ring (13) and the outer ring (12), a splitter plate (7) for dividing the mixed gas into a plurality of streams is provided inside the first mixing chamber (16), the air outlet of the splitter plate (7) is connected to the second mixing chamber (15), and the air outlet direction of the splitter plate (7) points to the inner wall of the outer ring (12).

2. The natural gas mixing device according to claim 1, characterized in that: The diverter plate (7) is spiral-shaped, and the spiral directions at two ends of the diverter plate (7) are opposite.

3. The natural gas mixing device according to claim 2, characterized in that: A rounded corner (18) is provided in the middle of the diverter plate (7).

4. The natural gas mixing device according to claim 1, characterized in that: A first baffle (11) is provided on the outer wall of one end of the inner ring (13) close to the air outlet of the diverter plate (7), and a second baffle (9) is provided on the inner wall of the outer ring (12). Gaps are provided between the first baffle (11) and the outer ring (12) and between the second baffle (9) and the inner ring (13), and the first baffle (11) and the second baffle (9) are both located inside the second mixing chamber (15).

5. The natural gas mixing device according to claim 1, characterized in that: The guide member (5) comprises a guide plate (4) connected to the first air inlet pipe (1) via a connecting column (3); the guide plate (4) is trumpet-shaped; the second air inlet pipe (10) is aligned with the trumpet mouth of the guide plate (4); and the first air inlet pipe (1) is aligned with the outer wall of the guide plate (4).

6. The natural gas mixing device according to claim 1, characterized in that: The inner ring (13) is provided with a first inclined plate (8) for directing the mixed gas onto the inner wall of the outer ring (12), and the first inclined plate (8) is located inside the second mixing chamber (15).

7. The natural gas mixing device according to claim 1, characterized in that: A plurality of second inclined plates (6) are provided on the outer ring (12), and the second inclined plates (6) are inclined in a direction away from the flow direction of the mixed airflow.

8. The natural gas mixing device according to claim 1, characterized in that: One end of the second mixing chamber (15) facing away from the gas outlet of the diverter plate (7) is connected to a plurality of gas outlet pipes (2).

9. The natural gas mixing device according to claim 1, characterized in that: The inner ring (13) is connected to the outer ring (12) via a trumpet-shaped plate (17).

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