Gas-steam premixing device

Abstract

The utility model provides a fuel gas and steam premixing device. The fuel gas and steam premixing device comprises a bent pipe; the round pipe is fixedly installed on one side of the bent pipe, necking openings are fixedly installed on the upper side and the lower side of the round pipe, a turbulent flow core is arranged on one side of the interior of the round pipe, and a rear turbulent flow retaining net plate is arranged on the other side of the interior of the round pipe; the square surface combustion chamber is fixedly connected to one side of the outer surface of the round pipe. According to the fuel gas and steam premixing device provided by the utility model, the bent pipe, the round pipe, the turbulent flow core, the turbulent flow rear screen plate, the necking opening, the Venturi connecting flange and the square surface combustion chamber are matched with one another, natural gas and air are mixed for multiple times, fuel gas and air are sufficiently premixed, surface combustion is performed on the combustion screen surface, the temperature can be effectively controlled through surface combustion, and the combustion efficiency is improved. And the device is simple in structure and high in practicability, fuel gas and air are fully mixed, and natural gas is completely combusted.

Description

Technical Field

[0001] The utility model relates to the field of gas premixing, in particular to a gas-steam premixing device. Background Art

[0002] Centrifugal glass wool is a filamentous material made by fiberizing molten glass using a centrifugal blowing process and spraying it with thermosetting resin. It is then subjected to deep processing by heat curing to be made into a series of products with various uses. The existing equipment for producing glass wool is to flow the molten glass liquid through a disk containing multiple holes to form glass fibers, and then blow the glass fibers into microfibers through a high-temperature flame airflow. However, in actual production, problems often occur due to the concentration of the gas.

[0003] The problem of unstable glass fiber quality caused by uneven or overly concentrated flame injection position is solved. The premixing device is suitable for mixing fuel gas with air or other organic gas and air. Its purpose is to achieve low nitrogen emissions after the mixed gas is fully premixed and burned on the combustion surface. It is used for the premixing function of the steam generator.

[0004] If the premixing effect of natural gas and air is not good, it will cause incomplete combustion of natural gas to form carbon monoxide and even the risk of explosion.

[0005] Therefore, it is necessary to provide a gas-steam premixing device to solve the above technical problems. Utility Model Content

[0006] The utility model provides a gas-steam premixing device, which solves the problem that if the premixing effect of natural gas and air is not good, the natural gas will be incompletely burned to form carbon monoxide, and there will even be a risk of explosion.

[0007] In order to solve the above technical problems, the utility model provides a gas-steam premixing device, comprising: a bent pipe;

[0008] A circular tube, the circular tube is fixedly installed on one side of the curved tube, the upper and lower sides of the circular tube are fixedly installed with constrictions, one side of the interior of the circular tube is provided with a spoiler core, and the other side of the interior of the circular tube is provided with a spoiler rear screen;

[0009] A square surface combustion chamber is fixedly connected to one side of the outer surface of the circular tube.

[0010] Preferably, a Venturi connecting flange is fixedly connected to the other side of the outer surface of the curved pipe.

[0011] Preferably, the circular tube includes a first connecting tube and a second connecting tube, a first connecting plate is fixedly mounted on one side of the outer surface of the first connecting tube, and a second connecting plate is fixedly mounted on one side of the outer surface of the second connecting tube.

[0012] Preferably, threaded holes are provided on both sides of the surfaces of the first connecting plate and the second connecting plate, the internal threads of the threaded holes are engaged with bolts, and one side of the outer surface of the bolts is threadedly engaged with an anti-loosening nut.

[0013] Preferably, a sealing groove is provided on the other side of the surface of the first connecting plate, and an annular groove is provided on the surface of the inner cavity wall of the sealing groove.

[0014] Preferably, a sealing block is provided on the other side of the surface of the second connecting plate, and a ring block is fixedly connected to the outer surface of the sealing block.

[0015] Preferably, the sealing block and the ring block are both made of rubber.

[0016] Compared with related technologies, the gas-steam premixing device provided by the present invention has the following beneficial effects:

[0017] The utility model provides a gas-steam premixing device, which multiple times mixes natural gas and air through the cooperation of a bend pipe, a round pipe, a spoiler core, a spoiler rear mesh plate, a necking, a Venturi connecting flange and a square surface combustion chamber. The gas and air are fully premixed and surface combustion is carried out on the combustion mesh surface. The surface combustion can effectively control the temperature and achieve low nitrogen emissions. The device has a simple structure and strong practicality, and can fully mix the gas and air to ensure complete combustion of the natural gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of a first embodiment of a gas-steam premixing device provided by the present utility model;

[0019] Figure 2 for Figure 1 The schematic side view of the circular tube shown;

[0020] Figure 3 for Figure 1 The schematic cross-sectional view of the circular tube shown;

[0021] Figure 4 This is a structural schematic diagram of a second embodiment of a gas-steam premixing device provided by the present utility model;

[0022] Figure 5 for Figure 4 An enlarged schematic diagram of point A is shown.

[0023] Numbers in the figure: 1, elbow, 2, round tube, 3, disturbance core, 4, disturbance rear mesh plate, 5, necking, 6, Venturi connecting flange, 7, square surface combustion chamber, 8, first connecting pipe, 9, second connecting pipe, 10, first connecting plate, 11, second connecting plate, 12, threaded hole, 13, bolt, 14, anti-loosening nut, 15, sealing groove, 16, sealing block, 17, ring block, 18, ring groove. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and implementation examples. Example 1

[0025] Please refer to Figure 1 、 Figure 2 and Figure 3 ,in, Figure 1 This is a structural schematic diagram of a first embodiment of a gas-steam premixing device provided by the present utility model; Figure 2 for Figure 1 The schematic side view of the circular tube shown; Figure 3 for Figure 1 The schematic cross-sectional view of the circular tube is shown. A gas-steam premixing device comprises: a bent pipe 1;

[0026] A circular tube 2 is fixedly mounted on one side of the curved tube 1. A constriction 5 is fixedly mounted on both the upper and lower sides of the circular tube 2. A spoiler core 3 is provided on one side of the interior of the circular tube 2, and a spoiler rear screen 4 is provided on the other side of the interior of the circular tube 2.

[0027] A square surface combustion chamber 7 is fixedly connected to one side of the outer surface of the circular tube 2.

[0028] A Venturi connecting flange 6 is fixedly connected to the other side of the outer surface of the elbow 1 .

[0029] Two curved pipes 1 are provided, and the two curved pipes 1 are respectively provided on the upper and lower sides of the circular pipe 2 , and the upper and lower sides of the circular pipe 2 are both provided with neckings 5 ​​, and the circular pipe 2 is connected to the curved pipe 1 through the neckings 5 ​​.

[0030] The venturi tube comprises a bend 1, a neck 5 and a round tube 2.

[0031] The working principle of a gas-steam premixing device provided by the utility model is as follows:

[0032] During operation, the external fan starts to rotate at a certain frequency, and the compressed air enters the inside of the circular tube 2 through the bend 1. The airflow enters the inside of the circular tube 2 from the bend 1 and the neck 5. The pipe mouth becomes thinner and the cross-section becomes smaller, so that the airflow pressure here decreases and the flow rate increases. At this time, negative pressure is formed at the outlet of the Venturi tube, which forms an adsorption effect on the external gas. At this time, the gas in the gas pipe is sucked into the negative pressure of the Venturi tube, the cross-section of the pipe mouth becomes larger, and the gas is premixed for the first time in the Venturi tube. The ratio of air and gas is adjusted by the Venturi valve group to complete the first premixing.

[0033] The preliminarily mixed gas enters the turbulent core 3 inside the circular tube 2 to change the direction of different flow channels, undergoes further premixing in the tube, is fully mixed after passing through a certain distance in the tube, and then passes through the turbulent mesh plate 4, which has multiple small holes to unify the flow direction of the outlet gas, completing the second premixing.

[0034] The mixed gas after the second premixing enters the square surface combustion chamber 7 for rectangular diffusion, then diffuses evenly through the return plate, and finally spreads flat on the combustion mesh surface to complete the third premixing. After the three premixings, the gas and air have been fully premixed and surface combustion is carried out on the combustion mesh surface. Surface combustion can effectively control the temperature and achieve low nitrogen emissions.

[0035] Compared with related technologies, the gas-steam premixing device provided by the present invention has the following beneficial effects:

[0036] The utility model provides a gas-steam premixing device, which cooperates with a bend pipe 1, a round pipe 2, a spoiler core 3, a spoiler rear mesh plate 4, a necking 5, a Venturi connecting flange 6 and a square surface combustion chamber 7 to mix natural gas and air multiple times. The gas and air are fully premixed and surface combustion is carried out on the combustion mesh surface. The surface combustion can effectively control the temperature and achieve low nitrogen emissions. The device has a simple structure and strong practicality, and can fully mix the gas and air to ensure complete combustion of the natural gas. Example 2

[0037] Please refer to Figure 4 and Figure 5 Based on the gas-steam premixing device provided in the first embodiment of this application, the second embodiment of this application provides another gas-steam premixing device. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0038] Specifically, the difference of the gas-steam premixing device provided in the second embodiment of the present application is that, in a gas-steam premixing device, the circular pipe 2 includes a first connecting pipe 8 and a second connecting pipe 9, a first connecting plate 10 is fixedly installed on one side of the outer surface of the first connecting pipe 8, and a second connecting plate 11 is fixedly installed on one side of the outer surface of the second connecting pipe 9.

[0039] Threaded holes 12 are formed on both sides of the surface of the first connecting plate 10 and the second connecting plate 11 . Bolts 13 are threadedly engaged with the inner threads of the threaded holes 12 , and anti-loosening nuts 14 are threadedly engaged with one side of the outer surface of the bolts 13 .

[0040] A sealing groove 15 is formed on the other side of the surface of the first connecting plate 10 , and an annular groove 18 is formed on the surface of the inner wall of the sealing groove 15 .

[0041] A sealing block 16 is provided on the other side of the surface of the second connecting plate 11 , and a ring block 17 is fixedly connected to the outer surface of the sealing block 16 .

[0042] The sealing block 16 and the ring block 17 are both made of rubber.

[0043] The sealing block 16 and the ring block 17 are both made of rubber and can be deformed. The sealing block 16 is annular and matches the sealing groove 15. The sealing block 16 is embedded in the sealing groove 15, and the ring block 17 is embedded in the ring groove 18 to achieve a sealing effect.

[0044] The working principle of a gas-steam premixing device provided by the utility model is as follows:

[0045] During operation, first connect the first connecting pipe 8 and the second connecting pipe 9 together, connect the first connecting plate 10 and the second connecting plate 11 together, thread the bolt 13 into the two threaded holes 12, and thread the anti-loosening nut 14 on the outer surface of the bolt 13, so that the first connecting plate 10 and the second connecting plate 11 are restricted together.

[0046] When the first connecting plate 10 and the second connecting plate 11 are assembled together, the sealing block 16 is embedded into the sealing groove 15 and the ring block 17 is squeezed into the ring groove 18 to achieve a sealing effect.

[0047] Compared with related technologies, the gas-steam premixing device provided by the present invention has the following beneficial effects:

[0048] The utility model provides a gas-steam premixing device, which can separate a circular tube 2 into two parts, a first connecting tube 8 and a second connecting tube 9, and can be disassembled by a user through a bolt 13, so that an operator can clean the turbulence-retention screen plate 4 inside the circular tube 2 conveniently. The device has a simple structure and strong practicality, and can conveniently clean the impurities remaining on the surface of the turbulence-retention screen plate 4 to maintain the mixing effect of the premixing device, thereby improving the practicality of the device.

[0049] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A gas-steam premixing device, characterized in that: include: bend pipe; A circular tube, the circular tube is fixedly installed on one side of the curved tube, the upper and lower sides of the circular tube are fixedly installed with constrictions, one side of the interior of the circular tube is provided with a spoiler core, and the other side of the interior of the circular tube is provided with a spoiler rear screen; A square surface combustion chamber is fixedly connected to one side of the outer surface of the circular tube.

2. A gas-steam premixing device according to claim 1, characterized in that: The other side of the outer surface of the elbow is fixedly connected with a Venturi connecting flange.

3. A gas-steam premixing device according to claim 1, characterized in that: The circular tube includes a first connecting tube and a second connecting tube. A first connecting plate is fixedly installed on one side of the outer surface of the first connecting tube, and a second connecting plate is fixedly installed on one side of the outer surface of the second connecting tube.

4. A gas-steam premixing device according to claim 3, characterized in that: Threaded holes are provided on both sides of the surfaces of the first connecting plate and the second connecting plate. Bolts are threadedly engaged inside the threaded holes, and an anti-loosening nut is threadedly engaged on one side of the outer surface of the bolt.

5. A gas-steam premixing device according to claim 3, characterized in that: A sealing groove is provided on the other side of the surface of the first connecting plate, and an annular groove is provided on the surface of the inner cavity wall of the sealing groove.

6. A gas-steam premixing device according to claim 3, characterized in that: A sealing block is provided on the other side of the surface of the second connecting plate, and a ring block is fixedly connected to the outer surface of the sealing block.

7. A gas-steam premixing device according to claim 6, characterized in that: The sealing block and the ring block are both made of rubber.

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