Particle loading device and test bench for a precise simulation system of low-flow-rate parameters

Abstract

A particle loading device for a precise simulation system of small-flow-rate parameters includes a hopper, particles, a glass conduit, a dust flow meter, a pressure reducing valve, a venting solenoid valve, a discharge valve, and an air source. The air source is connected to the pressure reducing valve, and the outlet of the pressure reducing valve is connected to the hopper and the venting solenoid valve respectively through pipelines. The hopper includes a hopper body with a hopper cover and a particle pressure plate inside the hopper body. The particles are placed inside the hopper body and located between the outlet of the hopper body and the particle pressure plate. The outlet of the hopper body is connected to the glass conduit, and a dust flow meter and a discharge valve are sequentially arranged on the glass conduit along the particle flow direction. The particle loading device and test bench of the precise simulation system of small-flow-rate parameters of this invention first determine the inner diameter of the glass conduit based on the particle flow rate, then regulate and control the pressure inside the hopper by the pressure reducing valve and the venting solenoid valve, and the dust mass flow meter is installed on the glass conduit, thus forming a closed-loop control system.

Description

Technical Field

[0001] This invention relates to the field of test bench technology, specifically to a particle loading device and test bench for a precise simulation system of small flow parameters. Background Technology

[0002] The particle loading device in a precise simulation system for low-flow-rate parameters is an important component of the test bench. However, in the current technology, there is no effective particle loading device that can accurately and effectively control the mass flow rate of particles. At the same time, it is also impossible to form an effective closed-loop control system. Furthermore, it is impossible to effectively observe the test status. Therefore, for a precise simulation system for low-flow-rate parameters, there is an urgent need for a particle loading device that can accurately and effectively control the mass flow rate of particles and form an effective closed-loop control system. Summary of the Invention

[0003] The technical problem solved by the present invention is to overcome the shortcomings of the prior art and provide a particle loading device and test bench for a small flow rate inflow parameter accurate simulation system.

[0004] The technical solution of this invention is:

[0005] A particle loading device for a small-flow-rate accurate simulation system includes a hopper, particles, a glass conduit, a dust flow meter, a pressure reducing valve, a venting solenoid valve, a discharge valve, and an air source. The air source is connected to the pressure reducing valve, and the outlet of the pressure reducing valve is connected to the hopper and the venting solenoid valve respectively through pipelines. The hopper includes a hopper body with a hopper cover and a particle pressure plate inside the hopper body. The particles are placed inside the hopper body and located between the outlet of the hopper body and the particle pressure plate. The outlet of the hopper body is connected to the glass conduit, and a dust flow meter and a discharge valve are sequentially arranged on the glass conduit along the particle flow direction.

[0006] Furthermore, a gap is provided between the particle pressure plate and the inner wall of the hopper body, or small holes are opened on the particle pressure plate.

[0007] Furthermore, the inner wall of the glass conduit is smooth.

[0008] Furthermore, the discharge valve is a slide gate type discharge valve.

[0009] A test bench includes a particle loading device, an air inlet pipe, a front-end conveying device, a rear-end discharge device, a combustion device, and a test bench as described above for a precise simulation system of small flow parameters; a glass conduit is inserted into the air inlet pipe, and the air inlet pipe, the front-end conveying device, the combustion device, and the rear-end discharge device are connected in sequence, with the combustion device placed on the test bench.

[0010] Furthermore, the combustion device has a rectangular structure and is made of transparent tempered glass.

[0011] Furthermore, the internal aerodynamic profiles of the front-end conveying device and the rear-end discharge device are Laval nozzle structures, and quartz glass windows are provided on the sides of the front-end conveying device and the rear-end discharge device.

[0012] Furthermore, the glass conduit is inserted into the intake pipe at the upper part of the intake pipe's centerline.

[0013] The advantages of this invention compared to the prior art are:

[0014] 1. The particle loading device and test bench of the small flow rate inlet parameter accurate simulation system of the present invention first determines the inner diameter of the glass tube according to the particle flow rate, and then adjusts and controls the pressure in the hopper by a pressure reducing valve and a venting solenoid valve. A dust mass flow meter is installed on the glass tube, thus forming a closed-loop control system.

[0015] 2. The particle loading device and test bench of the small flow rate inflow parameter accurate simulation system of the present invention have a gap between the particle pressure plate and the edge of the hopper or a small hole in the particle pressure plate to control a small amount of air to enter the particles.

[0016] 3. The particle loading device and test bench of the small flow rate inlet parameter accurate simulation system of the present invention have the glass duct outlet located above the center line of the inlet pipe, and the distance between them is controlled to control the distribution of particles on the cross section of the inlet pipe.

[0017] 4. The particle loading device and test stand of the small flow rate inflow parameter accurate simulation system of the present invention make the combustion device a transparent structure, and at the same time, quartz glass windows are provided on the sides of the front-end conveying device and the rear-end discharge device to realize the observation of the test device. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the particle loading device and test bench of the small flow rate inflow parameter accurate simulation system of the present invention. Detailed Implementation

[0019] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] like Figure 1 As shown, a particle loading device 10 for a precise simulation system of small flow parameters includes a hopper 1, particles 4, a glass conduit 5, a dust flow meter 6, a pressure reducing valve 7, a venting solenoid valve 8, a discharge valve 9, and an air source 30. The air source 30 is connected to the pressure reducing valve 7, and the outlet of the pressure reducing valve 7 is connected to the hopper 1 and the venting solenoid valve 8 via pipelines. The hopper 1 includes a hopper body 1, a hopper cover 2, and a particle pressure plate 3 inside the hopper body. The particles 4 are placed inside the hopper body and located between the outlet of the hopper body and the particle pressure plate 3. The outlet of the hopper body is connected to the glass conduit 5, and the dust flow meter 6 and the discharge valve 9 are sequentially arranged on the glass conduit 5 along the particle flow direction. The particle loading device of the precise simulation system of small flow parameters of the present invention first determines the inner diameter of the glass conduit based on the particle flow rate, then adjusts and controls the pressure inside the hopper by the pressure reducing valve and the venting solenoid valve, and a dust mass flow meter is installed on the glass conduit, thus forming a closed-loop control system.

[0022] Preferably, the particle pressure plate 3 has a gap with the inner wall of the hopper body, or the particle pressure plate 3 has small holes, thereby controlling a small amount of air to enter the particles.

[0023] Preferably, the inner wall of the glass conduit 5 is smooth to facilitate particle flow.

[0024] Preferably, the discharge valve 9 is a slide gate discharge valve.

[0025] A test bench includes a particle loading device 10 of the aforementioned small flow parameter precision simulation system, an air inlet pipe 21, a front-end conveying device 22, a rear-end discharge device 23, a combustion device 24, and a test bench 25; the glass conduit 5 is inserted into the air inlet pipe 21, and the air inlet pipe 21, the front-end conveying device 22, the combustion device 24, and the rear-end discharge device 23 are connected in sequence, and the combustion device is placed on the test bench 25.

[0026] Preferably, the combustion device 24 has a cuboid structure and is made of transparent tempered glass. The internal aerodynamic profiles of the front-end conveying device 22 and the rear-end exhaust device 23 are Laval nozzle structures, and quartz glass windows are provided on the sides of the front-end conveying device and the rear-end exhaust device. By making the combustion device a transparent structure and providing quartz glass windows on the sides of the front-end conveying device and the rear-end exhaust device, observation of the experimental device can be achieved.

[0027] Preferably, the glass conduit 5 is inserted into the air intake pipe 21 at the upper part of the center line of the air intake pipe, thereby controlling the distance between them to control the distribution of particles on the cross section of the air intake pipe.

[0028] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0029] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A test bench, characterized in that, Includes a particle loading device, an air intake pipe, a front-end conveying device, a rear-end discharge device, a combustion device, and a test bench for a precise simulation system of small flow parameters; A glass conduit is inserted into the air intake pipe, and the air intake pipe, the front delivery device, the combustion device, and the rear discharge device are connected in sequence. The combustion device is placed on the test bench. The glass guide tube is inserted into the center line of the intake pipe at the upper part of the intake pipe; The particle loading device of the small flow rate inflow parameter accurate simulation system includes a hopper, particles, a glass conduit, a dust flow meter, a pressure reducing valve, a venting solenoid valve, a discharge valve, and an air source. The air source is connected to the pressure reducing valve, and the outlet of the pressure reducing valve is connected to the hopper and the venting solenoid valve through pipelines respectively. The hopper includes a hopper body, a hopper cover is provided on the hopper body, and a particle pressure plate is provided inside the hopper body. The particles are placed inside the hopper body and located between the outlet of the hopper body and the particle pressure plate. The outlet of the hopper body is connected to a glass conduit, and a dust flow meter and a discharge valve are arranged sequentially on the glass conduit along the flow direction of the particles. The particle pressure plate has a gap with the inner wall of the hopper body, or the particle pressure plate has small holes. The discharge valve is a slide gate type discharge valve.

2. The test stand according to claim 1, characterized in that, The inner wall of the glass conduit is smooth.

3. The test stand according to claim 1, characterized in that, The combustion device has a rectangular structure and is made of transparent tempered glass.

4. The test stand according to claim 1, characterized in that, The internal aerodynamic profile of the front-end conveying device and the rear-end discharge device is a Laval nozzle structure, and quartz glass windows are provided on the sides of the front-end conveying device and the rear-end discharge device.

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