TWI673224B - Feeding device - Google Patents

Abstract

A feeding device includes a feeding component, a mixing output component, and a guiding cavity. The feeding assembly includes an input pipe, an inclined portion, and a jet hole. The input pipe is used to input the working fluid. The inclined portion is disposed obliquely on an end surface in the axial direction of the input pipe. The inclined portion has an inclined angle with respect to the end surface in the axial direction of the input pipe. The jet hole is provided in the inclined portion. The mixed output module is connected to the feed module. The mixed output assembly includes an assembly pipe and an output pipe connected to the assembly pipe. The assembly pipe is assembled outside the input pipe, so that the input pipe is connected to the output pipe. The guide cavity is disposed between the assembly pipe and the input pipe. The guiding cavity is communicated with the jet hole. The guiding cavity is used for injecting airflow into the output pipe through the jet hole.

Description

Feeding device

The present invention relates to a feeding device, and more particularly, to a feeding device in the form of a circular jet pump.

In the moving bed chemical loop system, the oxygen carrier particles are about 1mm ~ 3mm, and they are continuously circulated in the closed system for redox reaction. Compared with the mechanical valve type oxygen carrier circulation method, the gas-fed oxygen carrier circulation method has better high temperature operation reliability and tightness, so it is widely used in the oxygen bed circulation transportation of the moving bed chemical circuit system.

A jet pump is a mixed-flow conveying mechanical element that uses a higher-pressure primary fluid to guide a lower-pressure secondary fluid to transfer mass and energy between the fluids, and finally outputs a mixed fluid of pressure and mass. It can be known that the jet flow pump is an important oxygen carrier transport and metering gas delivery element for the chemical circuit system of the moving bed because of its function of particle transport and metering.

According to the adopted nozzle structure, it can be divided into two types: a central jet pump and an annular jet pump. The central jet pump places the nozzle in the middle of the pipeline, and the valve component also forms a narrow cross-section in the pipeline, which makes large solid particles (oxygen carriers) easily clogged in the valve, causing interruption in transportation and solid particles. Continuous supply cannot be delivered. In addition, in order to fully mix the main fluid with the secondary fluid, a longer mixing tube is required, so that the weight and space of the valve are large, and the light weight requirement cannot be applied. The nozzle is placed in the middle of the pipeline and bypassed to supply solids. The design of particles increases the structural complexity of the valve.

Compared with the design of the central jet pump, the annular jet pump nozzle ring device is outside the pipeline, so that the hollow transportation space in the middle of the pipeline is conducive to the continuous transportation of solid particles, so it can be used to transport agricultural products, plastic products and medicine Solid particles. However, the oxygen carrier of the chemical circuit is a metal oxide component and has a high density. The iron-based oxygen carrier is matched with alumina as a carrier, and its density is about 2 g / cm ³ to 3 g / cm ³ . Therefore, there is a need for a ring jet pump with higher delivery performance for high-density solid particle delivery.

Based on the above, how to provide a "feeding device" to avoid the problems encountered above and improve the effect of conveying solid particles is a problem to be solved in the industry.

The invention provides a feeding device, which improves the conveying effect of solid particles by improving the design of the mechanism.

An embodiment of the present invention provides a feeding device, which includes a feeding component, a mixed output component, and a guiding cavity. The feeding assembly includes an input pipe, an inclined portion and at least one jet hole. The input pipe is used for inputting a working fluid, and the inclined portion is disposed obliquely on an end surface in an axial direction of the input pipe. The inclined portion has an inclined angle compared to the end surface in the axial direction of the input pipe. At least one jet hole is provided in the inclined portion. The hybrid output assembly is connected to the feed assembly. The hybrid output assembly includes an assembly pipe and an output pipe connected to the assembly pipe. The assembly pipe is assembled outside the input pipe to communicate the input pipe with the output pipe. The guiding cavity is disposed between the assembling pipe and the input pipe, and the guiding cavity is communicated with at least one jet hole, wherein the guiding cavity is used for injecting an airflow into the output pipe from the at least one jet hole.

Based on the above, in the feeding device of the present invention, the inclined portion is designed to be arranged obliquely on the end surface in the axial direction of the input pipe. When the air flow is injected into the output pipe from the jet hole, the air flow is output in the oblique direction. Flow inside the pipe, and form a boundary layer film on the wall surface of the output pipe, and then produce a boundary layer adsorption effect (also known as the coanda effect), and generate a negative pressure zone in the input pipe, so that the working fluid in the input pipe The solid particles are pulled by the negative pressure, so that the airflow attracts the working fluid and the solid particles to be guided from the input pipe to the output pipe. It makes the working fluid and solid particles move to the output pipe more easily, which improves the effect of solid particle transportation.

In order to make the present invention more comprehensible, embodiments are described below in detail with reference to the accompanying drawings.

10, 20‧‧‧ feeding device

11‧‧‧Feeding components

112‧‧‧Input fittings

112a‧‧‧Input section

112b‧‧‧Towing section

113‧‧‧Ring

114‧‧‧ Inclined

116‧‧‧Spout hole

117‧‧‧ outside

118‧‧‧Assembled Department

12‧‧‧ mixed output components

121‧‧‧Assembly pipe fittings

122‧‧‧output pipe fittings

122a‧‧‧Tapered section

122b‧‧‧output section

124‧‧‧Gas injection port

128‧‧‧Assembly Department

130‧‧‧Guiding cavity

150‧‧‧through hole

B1, B2‧‧‧ boundary layer film

CF‧‧‧ tapered surface

D‧‧‧ diameter

G‧‧‧Airflow

E1‧‧‧face

L‧‧‧ length

P1‧‧‧ the first end

P2‧‧‧Second End

SD‧‧‧Solid particles

W‧‧‧working fluid

W1‧‧‧ Outer wall

W2‧‧‧Inner wall

θ‧‧‧ tilt angle

FIG. 1 is a perspective view of an embodiment of a feeding device of the present invention.

FIG. 2 is an exploded view of an embodiment of the feeding device of the present invention.

Fig. 3 is a sectional view of an embodiment of a feeding device of the present invention.

Fig. 4 is a sectional view of another embodiment of the feeding device of the present invention.

FIG. 5 is a schematic diagram of test results of the annular feeding device for different pipe diameters according to the present invention.

The specific embodiments of the present invention will be further described below with reference to the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, but cannot limit the protection scope of the present invention. It should be noted that, for convenience and clarity in description, the length, thickness, or size of each element in the drawing is shown in an exaggerated, omitted, or sketched manner, and the size of each element is not completely its actual size.

FIG. 1 is a perspective view of an embodiment of a feeding device of the present invention. FIG. 2 is an exploded view of an embodiment of the feeding device of the present invention. Fig. 3 is a sectional view of an embodiment of a feeding device of the present invention. Please refer to FIG. 1 to FIG. 3. The feeding device 10 of this embodiment includes a feeding component 11 and a mixed output component 12.

In this embodiment, the feeding assembly 11 includes an input pipe 112, an annular portion 113, an inclined portion 114, at least one jet hole 116, an outer edge portion 117, and an assembled portion 118. The input pipe 112 itself is a hollow pipe body, and the range of the diameter D of the input pipe 112 is 25.4 mm. Up to 127 mm, the input pipe 112 is used to input a working fluid W to drive a solid particle SD. The annular portion 113 and the assembled portion 118 are respectively disposed on the outer wall of the input pipe 112, and the assembled portion 118 is, for example, an external thread provided on the outer wall of the input pipe 112. The outer edge portion 117 is disposed on the outer wall of the input pipe 112 and is connected to the assembled portion 118. One side of the outer edge portion 117 adjacent to the assembled portion 118 is higher than the assembled portion 118.

In this embodiment, the inclined portion 114 is disposed obliquely on an end surface E1 in one axial direction of the input pipe 112, and the end surface E1 is located in the annular portion 113. The inclined portion 114 has an end surface E1 in the axial direction of the input pipe 112. An inclination angle θ, and the inclined portion 114 is inclined into the input pipe 112. In other words, the range of the inclination angle θ is between 2 degrees and 10 degrees, thereby designing an end surface E1 of the annular portion 113 of the input pipe 112. The inclined portion 114 has an inclined angle θ and is inclined into the input pipe 112.

In the present embodiment, at least one jet hole 116 is disposed in the inclined portion 114, and the diameter of each jet hole 116 ranges from 1.0 mm to 3.0 mm. Taking FIG. 2 as an example, the number of the spray holes 116 is eight, in which there are four spray holes 116 above the inclined portion 114 and four spray holes 116 below the inclined portion 114, which are symmetrically arranged, but the present invention does not align the spray holes. The number of 116 is limited. In another embodiment, one spray hole 116 may be disposed above the inclined portion 114.

In this embodiment, the hybrid output assembly 12 itself is a hollow pipe body. The hybrid output assembly 12 includes an assembly pipe 121, an output pipe 122, a gas injection port 124, and an assembly portion 128. The assembling pipe 121 is connected to the output pipe 122, wherein the diameter of the assembling pipe 121 is larger than the diameter of the output pipe 122. The output pipe 122 includes a tapered section 122a and an output section 122b. The tapered section 122a has a first end P1 and a second end P2 opposite to each other. The first end P1 of the tapered section 122a is connected to the assembly pipe 121. The second end P2 of the reduced section 122a is connected to the output section 122b, and the pipe diameter of the first end P1 of the tapered section 122a is larger than the pipe diameter of the second end P2 of the tapered section 122a, so that the tapered section 122a forms a tapered structure. .

In this embodiment, the gas injection port 124 is disposed on the assembly pipe 121, and the gas injection port 124 passes through the wall surface of the assembly pipe 121 so that the gas injection port 124 can communicate with the interior of the assembly pipe 121. The assembling portion 128 is provided on an inner wall of a front end of the assembling pipe piece 121. The assembling portion 128 is, for example, an internal thread provided in the assembling pipe piece 121.

In this embodiment, the mixed output component 12 is connected to the feed component 11, and the diameter of the assembly pipe 121 is larger than the diameter of the input pipe 112. The assembling pipe 121 is assembled around the outside of the input pipe 112. The assembling part 128 of the assembling pipe 121 and the assembled part 118 of the input pipe 112 are assembled with each other. The end face of the assembling pipe 121 bears on the outer part 117, so that the input pipe 112 communicates with the output. The pipe fitting 122 is a feeding device 10 according to the embodiment. As shown in FIG. 3, the outer wall W1 of the pipe fitting 112, the annular portion 113, the inner wall W2 of the assembling pipe fitting 121, the assembly portion 128 and the assembled portion 118 constitute a guide.引 腔 体 130。 The cavity 130. In addition, in an embodiment not shown, a sealing element may be disposed at an appropriate position to improve the sealing performance of the guiding cavity 130. For example, an O-ring may be disposed between the annular portion 113 and the assembling pipe 121.

In this embodiment, the input pipe 112 includes an input section 112a and a traction section 112b. The input section 112a communicates with the traction section 112b. The position of the traction section 112b corresponds to the position of the guiding cavity 130, that is, the guiding cavity 130 is provided. Between the assembly pipe 121 and the traction section 112b of the input pipe 112. The gas injection port 124 is in communication with the guiding cavity 130. The gas injection port 124 is used to inject the airflow G into the inside of the guiding cavity 130. The guiding cavity 130 is in communication with at least one jet hole 116. On the other hand, the inclined portion 114 is adjacent to a tapered surface CF of one of the tapered sections 122a. The inclined direction of the inclined portion 114 is opposite to that of the tapered surface 122a, and the inclined direction of each jet hole 116 and the tapered surface CF. The tilt direction is the same.

With this configuration, the input pipe 112 is used to input the working fluid W to drive the solid particles SD, and the guide cavity 130 is used to inject the airflow G from the jet hole 116 into the output pipe 122, and is used to guide the working fluid W and The solid particles SD are transferred from the input pipe 112 to the output pipe 122. In detail, since the inclined portion 114 is an end surface E1 arranged obliquely in the axial direction of the input pipe, and the inclined portion 114 has at least one jet hole 116, in other words, not all positions of the inclined portion 114 can inject the airflow G, and The diameter of the jet hole 116 ranges from 1.0 mm to 3.0 mm. When the airflow G is injected into the output pipe 122 from the jet hole 116, by reducing or controlling the size and arrangement position of the jet flow 116, the air stream G can be injected into the output pipe 122 at a relatively high speed. 114 is an inclined surface that is inclined, so that the airflow G flows in the output pipe 122 in an inclined direction, and the airflow G flows along the tapered plane CF to the output section 122b. A boundary layer film B1 is formed on the wall surface of the output section 122b of the output pipe 122. At the same time, a boundary layer adsorption effect is generated, and at the same time, a negative pressure region is generated in the traction section 112b of the input pipe 112, so that the working fluid W and the solid particles SD in the input pipe 112 are pulled by the negative pressure to form a high-pressure airflow. G is used to attract the working fluid W and the solid particles SD to be guided to the output pipe 122 by the traction section 112b, so that the working fluid W and the solid particles SD can be easily moved toward the output pipe 122, and the effect of the solid particle SD transport is improved.

Further, due to the improvement of the SD effect of transporting solid particles, this embodiment can transport solid particles with a higher flow rate with a smaller-volume feeding device 10, which can meet the requirements of lightening and can also be used to transport high-density solid particles. Moving bed chemical circuit system, in which the size of solid particles ranges from 75um to 3mm.

In addition, the length L of the output section 122b in this embodiment ranges from 2 to 6 times the diameter D of the input pipe 112, so that the air flow G can form a fully developed flow in the fluid output section. So that the boundary layer adsorption effect is generated, and the effect of SD transport of solid particles can be improved.

Fig. 4 is a sectional view of another embodiment of the feeding device of the present invention. Please refer to FIG. 4. It should be noted that the feeding device 20 of FIG. 4 is similar to the feeding device 10 of FIGS. 1 to 3, wherein the same components are denoted by the same reference numerals and have the same functions without repeated description. Description Difference. The difference between the feeding device 20 of FIG. 4 and the feeding device 10 of FIGS. 1 to 3 is that the input pipe 112 of the feeding device 20 of FIG. 4 includes at least one through hole 150 that passes through the wall surface of the traction section 112b. The diameter ranges from 100 μm to 10 mm, and the through hole 150 communicates with the guiding cavity 130. In other words, when the gas injection port 124 injects the airflow G into the inside of the guiding cavity 130, the airflow G in the guiding cavity 130 may be The jet hole 116 is injected into the inside of the output pipe 122, and the airflow G can be injected into the input pipe 112 through the through hole 150.

In this configuration, by providing a through hole 150 in the traction section 112b of the input pipe 112, since the diameter of the through hole 150 in this embodiment is smaller than the diameter of the jet hole 116, most of the airflow G is still mainly from the jet hole 116 Injected into the output pipe 122, a small part of the air flow G can be injected into the input pipe 112 through the through hole 150, and a boundary layer film B2 is formed on the inner wall surface of the traction section 112b, so that when the solid particles SD are transported, the air flow G can give input The force of the solid particles SD in the pipe member 112 is far from the inner wall surface of the input pipe member 112. Therefore, the boundary layer film B2 can reduce and improve the friction between the solid particles SD and the pipe wall of the input pipe 112 and break bridging to improve the transport effect of the solid particles SD.

FIG. 5 is a schematic diagram of test results of the annular feeding device for different pipe diameters according to the present invention. See Figure 5. There are three types of circular feeding devices with different tube diameters in FIG. 5, wherein the circular feeding device of 50 mm refers to the design of the feeding device 10 of FIG. 1 to FIG. 3 of the present invention, and the diameter of the input pipe 112 is 50 mm; The ring feeding device and the 76mm ring feeding device are conventional feeding devices. As a control group, the gas flow rate (100LPM, 120LPM, 140LPM, 160LPM, and 180LPM) and the solid oxygen carrier flow rate are tested, where LPM is liters per minute The number is liters per minute (1 / min). From Figure 5, it can be seen that in the range of the test gas flow rate (100LPM, 120LPM, 140LPM, 160LPM, and 180LPM), the 38mm ring feeding device is above the gas flow rate of 140LPM, and the solid oxygen carrier flow rate has approached a fixed value, about 15kg / min , Showing that no matter how to increase the gas flow, it will still be limited by the influence of the pipe diameter size, and it will not be able to improve the solid The value of body oxygen carrier flow. Compared with the 38mm circular feeding device with a smaller pipe diameter, except for the 76mm circular feeding device at a low gas flow rate of 100LPM, it is impossible to transport solid oxygen-carrying bodies. Stable oxygen carrier transport performance in the range of 100LPM to 180LPM of gas flow.

For the 50mm circular feeding device and the 76mm circular feeding device, the volume of the 50mm circular feeding device is reduced by about 60% compared with the volume of the 76mm circular feeding device. Compared with the 76mm circular feeding device with a larger pipe diameter, the 50mm circular feeding device adopts the design of the feeding device 10 of the present invention as shown in FIGS. 1 to 3 to test the gas flow rate (100LPM, 120LPM, 140LPM, 160LPM, and 180LPM). In the range of), the solid oxygen carrier flow of the 50mm ring feeding device can be increased by about 33%, showing that the solid oxygen carrier flow of the 50mm ring feeding device is better than the solid oxygen carrier flow of the 76mm ring feeding device. In other words, the feeding device of the present invention can provide a higher solid oxygen carrier delivery capacity with a smaller tube diameter. In addition, the 50mm circular feeding device can transport solid oxygen carriers at a low flow rate with a low gas flow rate (100LPM), making a wider range of flowable airflow, and can make up for a larger cross-sectional area of airflow This results in the disadvantage of insufficient boundary layer adsorption effect.

In summary, in the feeding device of the present invention, the inclined portion is designed to be inclinedly disposed on the end surface in the axial direction of the input pipe, and when the airflow is injected into the output pipe from the jet hole, the airflow is in an inclined direction. It flows in the output pipe and forms a boundary layer film on the wall surface of the output pipe, which in turn produces a boundary layer adsorption effect, and creates a negative pressure zone in the input pipe, so that the working fluid and solid particles in the input pipe are pulled by negative pressure. The air flow attracts the working fluid and solid particles from the input pipe to the output pipe, so that the working fluid and solid particles can be easily moved toward the output pipe, and the effect of solid particle transportation is improved.

Further, due to the improvement of the effect of conveying solid particles, the present invention can convey solid particles with a higher flow rate with a feeding device with a smaller volume, which can meet the demand for light weight. Suitable for moving bed chemical loop system for conveying high density solid particles.

Furthermore, the inclined portion of the present invention has at least one jet hole, and the diameter of the jet hole ranges from 1.0 mm to 3.0 mm. In other words, not all positions of the inclined portion can inject airflow, thereby reducing or controlling the jet hole. The size and position of the flow allows the airflow to be injected into the output pipe at a relatively high speed, and allows the airflow to fully develop at an appropriate distance in the output section of the output pipe.

In addition, the length of the output section of the present invention ranges from 2 to 6 times the pipe diameter of the input pipe, so that the airflow can form a fully developed flow in the fluid output section, which is more effective in generating the boundary layer adsorption effect and more effective. Improve the effect of solid particle transport.

In addition, in the present invention, a through hole is provided in the input pipe, and the through hole is used for injecting airflow into the input pipe from the through hole, and a boundary layer film is formed on the inner wall surface of the input pipe. The boundary layer film can reduce and improve solids. The friction between the particles and the pipe wall of the input pipe, and the phenomenon of bridging, so as to improve the transport effect of solid particles.

Further, since the diameter of the through hole of the present invention is smaller than the diameter of the jet hole, most of the airflow is still mainly injected into the output pipe from the jet hole, so that a negative pressure region is generated in the input pipe, and the work in the input pipe is allowed to work. While the fluid and solid particles are being pulled by negative pressure, a small part of the airflow is injected into the input pipe through the through hole to give the solid particles in the input pipe a force away from the inner wall surface of the input pipe, which further improves the effect of solid particle transport.

Although the present invention has been disclosed as above with the examples, it is not intended to limit the present invention. Any person with ordinary knowledge in the technical field can make some modifications and retouching without departing from the spirit and scope of the present invention. The protection scope of the present invention shall be determined by the scope of the attached patent application.

Claims (14)

A feeding device includes a feeding assembly including an input pipe, an inclined portion, and at least one jet hole. The input pipe is used for inputting a working fluid, and the inclined portion is arranged obliquely in an axial direction of the input pipe. An end surface of the inclined portion, the inclined portion has an inclined angle relative to the end surface of the input pipe in the axial direction, and the inclined portion is inclined toward the inside of the input pipe, and the at least one jet hole is provided in the inclined portion; The mixed output assembly is connected to the feeding assembly. The mixed output assembly includes an assembly pipe and an output pipe connected to the assembly pipe. The assembly pipe is assembled outside the input pipe, so that the input pipe is connected to the output. A pipe member; and a guide cavity disposed between the assembly pipe member and the input pipe member, the guide cavity communicating with the at least one jet hole, wherein the guide cavity is used for an air flow from the at least one jet stream A hole is injected into the output pipe. The feeding device according to item 1 of the scope of patent application, wherein the output pipe includes a tapered section and an output section, the tapered section has a first end and a second end opposite to each other, The first end is connected to the assembly pipe, the second end of the tapered section is connected to the output section, and the pipe diameter of the first end of the tapered section is larger than the pipe diameter of the second end of the tapered section. The feeding device according to item 2 of the scope of patent application, wherein the length of the output section is between 2 and 6 times the diameter of the input pipe. The feeding device according to item 2 of the scope of patent application, wherein the inclined portion is adjacent to a tapered surface of the tapered section, and the inclined direction of the inclined portion is opposite to that of the tapered surface. The feeding device according to item 4 of the scope of the patent application, wherein the inclined direction of each of the jet holes is the same as the inclined direction of the tapered surface. The feeding device according to item 1 of the patent application range, wherein the range of the inclination angle is between 2 and 10 degrees. The feeding device according to item 1 of the scope of patent application, wherein the diameter of each of the jet holes ranges from 1.0 mm to 3.0 mm. The feeding device according to item 1 of the scope of patent application, wherein the diameter of the input pipe is in the range of 25.4mm to 127mm. According to the feeding device described in item 1 of the scope of patent application, wherein the diameter of the assembly pipe is larger than the diameter of the input pipe, the mixed output assembly includes an assembly portion provided on an inner wall of one of the assembly pipes, And the feeding assembly includes an assembled part and an annular part, the annular part and the assembled part are respectively disposed on an outer wall of the input pipe, and the end surface is located in the annular part, and the assembled part and the assembled part are mutually Assemble so that the outer wall of the input pipe, the annular portion, the inner wall of the assembled pipe, the assembly portion and the assembled portion together constitute the guide cavity. The feeding device according to item 1 of the scope of patent application, wherein the mixed output assembly includes a gas injection port, the gas injection port is disposed on the assembly pipe, and the gas injection port communicates with the guiding cavity. The feeding device according to item 1 of the patent application range, wherein the input pipe includes an input section and a traction section, and the input section communicates with the traction section, and the position of the traction section corresponds to the position of the guide cavity. The feeding device according to item 11 of the scope of patent application, wherein the input pipe includes at least one through hole, each of the through holes communicates with the guide cavity, and each of the through holes is used for injecting the airflow from the at least one through hole to the Within the traction section. The feeding device according to item 12 of the scope of patent application, wherein the diameter of each of the through holes is smaller than the diameter of each of the jet holes. The feeding device according to item 12 of the scope of patent application, wherein the diameter of each of the through holes ranges from 100 μm to 10 mm.