Turbulent flow type gas mixing proportional control valve

Abstract

The utility model relates to a turbulent flow type mixed gas proportional control valve which comprises a valve body, a first gas inlet connector, a second gas inlet connector, a proportional rotor, a turbulent flow net and a mixed gas outlet connector which are all explosion-proof pieces. The valve body is provided with two air inlet connectors, an air outlet connector and a rotor installation hole. Two gas flow channels are formed in the valve body, the head ends of the two gas flow channels are communicated with the two gas inlet connectors respectively, the tail ends of the two gas flow channels are combined and then extend to the position of the gas outlet connector, and the rotor mounting hole is communicated with one gas flow channel; the first gas inlet connector is fixedly connected with one gas inlet connector on the valve body, the second gas inlet connector is fixedly connected with the other gas inlet connector on the valve body, and the mixed gas outlet connector is fixedly connected with the gas outlet connector on the valve body. The turbulent flow net is mounted in a tail end combined flow channel section of the two gas flow channels in the valve body; and the proportional rotor is mounted in the rotor mounting hole in a manner that the end part is exposed and the proportional rotor can be adjusted up and down. The structure ensures that the mixing uniformity and the mixing precision are improved, and is safe and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of gas mixing, in particular to a turbulent flow type gas mixing proportion control valve. Background Art

[0002] Hydrogen directly produces water during the combustion process and does not emit pollutants into the air. It is currently recognized as a clean energy source. However, high-concentration hydrogen is at risk of explosion during the combustion process. Therefore, current technology cannot meet the large-scale use requirements of high-concentration hydrogen. The calorific value of low-concentration hydrogen is relatively low and has no better utilization value. In view of the current low utilization rate, which causes the problem of hydrogen energy waste, if hydrogen and natural gas are mixed in a certain proportion and then burned and utilized, it can solve the environmental and energy utilization problems well. Therefore, it is urgent to design a gas supply system for mixing hydrogen and natural gas to improve the utilization rate of hydrogen. Among them, the device for mixing the two gases is the key structure of the gas supply system, which has a decisive influence on the uniformity and accuracy of the mixing. Utility Model Content

[0003] The utility model aims to overcome the deficiencies of the prior art and to provide a turbulent flow-type gas-mixing ratio control valve which can ensure improved mixing uniformity and mixing accuracy, has a small volume, and is safe and reliable.

[0004] The utility model solves the technical problem through the following technical solutions:

[0005] A turbulent gas mixture proportional control valve comprises a valve body, a first gas inlet joint, a second gas inlet joint, a proportional rotor, a turbulent net and a mixed gas outlet joint, all of which are explosion-proof parts;

[0006] The valve body is provided with two air inlet interfaces, one air outlet interface and a rotor mounting hole; two gas flow channels are provided in the valve body, the head ends of the two gas fluids are respectively connected with the two air inlet interfaces, the tail ends of the two gas flow channels are merged and extend to the air outlet interface position, and the rotor mounting hole is connected with one gas flow channel;

[0007] The first gas inlet connector is fixedly connected to an air inlet interface on the valve body by threaded cooperation, the second gas inlet connector is fixedly connected to another air inlet interface on the valve body by threaded cooperation, and the mixed gas outlet connector is fixedly connected to the air outlet interface on the valve body by threaded cooperation; the spoiler net is installed in the tail end merging flow channel section of the two gas flow channels in the valve body; the proportional rotor is installed in the rotor mounting hole in a manner that the end is exposed and can be adjusted up and down.

[0008] Moreover, the proportional rotor is composed of a rotor main section, a threaded connection section and an extended section; the rotor main section is conical, and a sealing ring installation groove is provided at the middle position of the rotor main section, an O-ring is installed in the sealing ring installation groove, the rotor main section is inserted into the shaft installation hole on the valve body, and a sealing contact is formed with the hole wall through the O-ring; the threaded connection section of the proportional rotor is threadedly connected with the external threaded hole at the end of the shaft installation hole, so that the proportional rotor is fixed to the valve body in an upward and downward adjustable manner; the extended section of the proportional rotor is the operating end of the proportional rotor.

[0009] Furthermore, a proportional rotor handle is also included, and the outwardly extending section of the proportional rotor is fixedly connected to the proportional rotor handle via a radial fixing pin.

[0010] Moreover, the spoiler net is a cylindrical net formed by winding a fine-pore net in a spiral shape, and the pores of adjacent layers are staggered with each other, and the pore size of the mesh is 80-120 μm.

[0011] Furthermore, a sealing ring installation groove is provided at the inner end of the first gas inlet joint, an O-ring is installed in the sealing ring installation groove, and a sealing contact is formed with the corresponding gas inlet on the valve body through the O-ring.

[0012] Furthermore, the valve locking nut is also included, and the valve locking nut is threadedly connected with an external thread arranged at the upper end of the valve body and located outside the rotor mounting hole.

[0013] The advantages and beneficial effects of the utility model are:

[0014] 1. This turbulent flow mixing ratio control valve ensures the mixing uniformity and mixing accuracy by mixing the two gases through circumferential flow after the two gases are adjusted in proportion.

[0015] 2. This turbulent gas mixing proportion control valve has the advantages of small size, easy use, and no need for complex electrical control. In addition, all components are explosion-proof to ensure safety and reliability in use.

[0016] 3. The spoiler net of this turbulent gas mixing ratio control valve is an SV type spoiler net. The outer diameter of the spoiler net matches the inner diameter of the mixed gas outlet. The internal gas flow rate can be controlled at 8m / s to extend the turbulence time, thereby improving the uniformity and accuracy of mixing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1a It is a cross-sectional view of the overall structure of the utility model;

[0018] Figure 1b It is a top view of the overall structure of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the proportional rotor of the utility model;

[0020] Figure 3 Schematic diagram of the connector of the present invention, 3a is the first gas inlet connector, 3b is the second gas inlet connector, 3c is the mixed gas outlet connector;

[0021] Figure 4 This is a schematic diagram of the valve body structure of the utility model.

[0022] In the figure: 1-first gas inlet connector; 1.1-sealing ring mounting groove; 2-valve body; 2.1-first gas inlet interface; 2.2, second gas inlet interface; 2.3, gas outlet interface; 2.4, rotor mounting hole; 2.5, first gas flow channel; 2.6, second gas flow channel; 3-second gas inlet connector; 4-valve locking nut; 5-proportional rotor handle; 6-radial fixing pin; 7-mixed gas outlet connector; 8-spoiler net; 9-proportional rotor; 9.1-rotor main body section; 9.1.1, sealing ring mounting groove; 9-2, threaded connection section; 9-3, protruding section. DETAILED DESCRIPTION

[0023] The present invention will be further described in detail below through specific embodiments. The following embodiments are merely descriptive and not restrictive, and the protection scope of the present invention cannot be limited by them.

[0024] A turbulent gas mixture ratio control valve, see Figure 1a-Figure 4 The invention point is: it mainly includes a valve body 2, a first gas inlet connector 1, a second gas inlet connector 3, a proportional rotor 9, a proportional rotor handle 5, a valve locking nut 4, a spoiler net 8 and a mixed gas outlet connector 7, and the spoiler net adopts an SV type spoiler net.

[0025] The valve body is provided with two air inlet interfaces, one air outlet interface 2.3 and a rotor mounting hole 2.4, one of the two air inlet interfaces is a first gas air inlet interface 2.1, and the other is a second gas air inlet interface 2.2. Two gas flow channels are provided in the valve body, namely a first gas flow channel 2.5 and a second gas flow channel 2.6, the head ends of the two gas fluids are respectively connected to the two air inlet interfaces, and the tail ends of the two gas flow channels are merged and extended to the air outlet interface position. The rotor mounting hole is connected to a gas flow channel, and in this embodiment, it is connected to the second gas flow channel. Internal threads are provided in the two air inlet interfaces and the two air outlet interfaces.

[0026] The first gas inlet connector is fixedly connected to an air inlet interface on the valve body by threaded fitting, the second gas inlet connector is fixedly connected to another air inlet interface on the valve body by threaded fitting, and the mixed gas outlet connector is fixedly connected to the air outlet interface on the valve body by threaded fitting. The SV type spoiler net is installed in the tail end merging flow channel section of the two gas flow channels in the valve body. The proportional rotor is installed in the rotor mounting hole in a manner that the end is exposed and can be adjusted up and down. By adjusting the up and down position of the proportional rotor, the mixing ratio of the two gases entering the valve body can be adjusted.

[0027] The SV type spoiler net is a cylindrical net formed by tightly winding a fine pore size net with a pore size of 80-120 μm in a vortex line shape, and the pores of adjacent layers are staggered after winding. The two gases pass through the spoiler net, and after the two gases enter the spoiler net, the gases form a turbulent flow, and the two gases are fully mixed by the gas turbulence, and uniform mixing can be achieved.

[0028] The proportional rotor is composed of a rotor main section 9.1, a threaded connection section 9.2 and an extended section 9.3. The rotor main section is conical in shape, and a sealing ring installation groove 9.1.1 is provided in the middle of the rotor main section, and an O-ring is installed in the sealing ring installation groove. The rotor main section is inserted into the shaft installation hole on the valve body, and a sealing contact is formed with the hole wall through the O-ring to prevent gas from overflowing through the shaft installation hole. The threaded connection section of the proportional rotor forms a threaded connection with the external threaded hole at the end of the shaft installation hole to fix the proportional rotor on the valve body. The extended section of the proportional rotor is the operating end of the proportional rotor, which is connected to the proportional rotor handle through a radial fixing pin 6. In order to smoothly install the radial fixing pin, a radial pin hole 5.1 is opened on the side of the proportional rotor handle. This hole is located on the same horizontal plane as the radial fixing pin installation position and is aligned.

[0029] The inner end of the first gas inlet joint is provided with a sealing ring installation groove 1.1 for installing an O-ring to play a sealing role.

[0030] In order to install the turbulent mixing ratio control valve on the instrument lining plate of the application setting, an external thread is arranged on the outer periphery of the rotor mounting hole at the upper end of the valve body to form a threaded connection with the valve locking nut.

[0031] The working principle of this turbulent mixing ratio control valve is:

[0032] Connect the first gas inlet connector and the second gas inlet connector of the turbulent gas mixing proportion control valve to the upstream pipeline network, and connect the mixed gas outlet connector of the turbulent gas mixing proportion control valve to the downstream pipeline network. At this time, connect the gas source, and rotate the proportional rotor handle to the required scale according to the required mixed gas ratio. At this time, the proportional rotor will move upward, and the first gas and the second gas will enter the SV type turbulent net at the same time for circumferential mixing. The mixed gas will enter the downstream through the mixed gas outlet connector.

[0033] The utility model is applied to natural gas hydrogen blending, and natural gas can be input through the first gas inlet connector, hydrogen can be input through the second gas inlet connector, and the mixed gas output through the mixed gas outlet connector is a mixed gas of natural gas and hydrogen. In addition to being applied to the blending of natural gas and hydrogen, the turbulent flow mixing ratio control valve is also generally applicable to the blending of two other gases, and has good applicability.

[0034] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art will appreciate that various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A turbulent gas mixing ratio control valve, characterized in that: It includes a valve body, a first gas inlet connector, a second gas inlet connector, a proportional rotor, a spoiler net and a mixed gas outlet connector, and all of them are explosion-proof parts; The valve body is provided with two air inlet interfaces, one air outlet interface and a rotor mounting hole; two gas flow channels are provided in the valve body, the head ends of the two gas fluids are respectively connected with the two air inlet interfaces, the tail ends of the two gas flow channels are merged and extend to the air outlet interface position, and the rotor mounting hole is connected with one gas flow channel; The first gas inlet connector is fixedly connected to an air inlet interface on the valve body by threaded cooperation, the second gas inlet connector is fixedly connected to another air inlet interface on the valve body by threaded cooperation, and the mixed gas outlet connector is fixedly connected to the air outlet interface on the valve body by threaded cooperation; the spoiler net is installed in the tail end merging flow channel section of the two gas flow channels in the valve body; the proportional rotor is installed in the rotor mounting hole in a manner that the end is exposed and can be adjusted up and down.

2. The turbulent flow type gas mixture ratio control valve according to claim 1, characterized in that: The proportional rotor is composed of a rotor main section, a threaded connection section and an extended section; the rotor main section is conical in shape, and a sealing ring installation groove is provided at the middle position of the rotor main section, an O-ring is installed in the sealing ring installation groove, the rotor main section is inserted into the shaft installation hole on the valve body, and a sealing contact is formed with the hole wall through the O-ring; the threaded connection section of the proportional rotor is threadedly connected with the external threaded hole at the end of the shaft installation hole, so that the proportional rotor is fixed to the valve body in an upward and downward adjustable manner; the extended section of the proportional rotor is the operating end of the proportional rotor.

3. The turbulent flow type gas mixture ratio control valve according to claim 1, characterized in that: It also includes a proportional rotor handle, and the outwardly extending section of the proportional rotor is fixedly connected to the proportional rotor handle via a radial fixing pin.

4. The turbulent flow type gas mixture ratio control valve according to claim 1, characterized in that: The spoiler net is a cylindrical net formed by winding a fine-pore net in a spiral shape, and the pores of adjacent layers are staggered with each other, and the pore size of the mesh is 80-120 μm.

5. The turbulent flow type gas mixture ratio control valve according to claim 1, characterized in that: A sealing ring installation groove is provided at the inner end of the first gas inlet joint, an O-ring is installed in the sealing ring installation groove, and a sealing contact is formed with the corresponding gas inlet on the valve body through the O-ring.

6. The turbulent flow type gas mixture ratio control valve according to claim 1, characterized in that: It also includes a valve locking nut, which is threadedly connected to an external thread arranged on the upper end of the valve body and located outside the rotor mounting hole.

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