Working medium circulation assembly for cooling spiral conveying device and conveying system

Abstract

The utility model relates to the technical field of waste heat utilization, and particularly discloses a working medium circulation assembly for cooling a spiral conveying device and a conveying system.The working medium circulation assembly for cooling the spiral conveying device comprises an expansion machine, a condenser, a pump body and a working medium pipeline; the working medium pipeline is attached to the spiral conveying device and is used for circulation of an organic working medium; the outlet end of the working medium pipeline, the expansion machine, the condenser, the pump body and the inlet end of the working medium pipeline are sequentially connected. According to the scheme, in the working medium circulating assembly, the organic working medium can sequentially circulate in the expansion machine, the condenser, the pump body and the working medium pipeline, and absorbs heat of the spiral conveying device to enable the expansion machine to do work; and compared with a water cooling mode, the cooling efficiency can be effectively improved, meanwhile, the working medium circulating assembly is matched to improve the waste heat energy utilization rate of the spiral conveying device, and the problem that the cooling efficiency of a cooling mechanism used by an existing spiral conveyor is low is effectively solved.

Description

Technical Field

[0001] The present application relates to the technical field of waste heat utilization, and in particular to a working fluid circulation component and a transportation system for a cooling screw conveyor. Background Art

[0002] For screw conveyors that transport high-temperature materials, the interior of the screw conveyor has a relatively high temperature during the material transport process. Therefore, screw conveyors used to transport high-temperature materials are generally equipped with cooling mechanisms to reduce the temperature of internal components of the screw conveyor and reduce damage to the screw conveyor caused by high temperature.

[0003] However, in the cooling mechanism used in the existing screw conveyor, water is generally used as the cooling medium, and the cooling efficiency is low. Utility Model Content

[0004] In view of this, the purpose of the present application is to provide a working fluid circulation component and a transportation system for cooling a screw conveyor device, so as to solve the problem of low cooling efficiency of the cooling mechanism used in the existing screw conveyor.

[0005] In order to achieve the above technical objectives, the first aspect of the present application provides a working fluid circulation assembly for cooling a screw conveying device, comprising: an expander, a condenser, a pump body and a working fluid pipeline;

[0006] The working medium pipeline is fitted with a spiral conveying device for allowing the organic working medium to flow;

[0007] The outlet end of the working fluid pipeline, the expander, the condenser, the pump body and the inlet end of the working fluid pipeline are connected in sequence.

[0008] Further, it also includes: a generator;

[0009] The generator is connected to the expander;

[0010] The expander is used to drive the generator to generate electricity.

[0011] Furthermore, the organic working fluid is one of R123, R245fa, R152a, ethyl chloride, propane, n-butane and isobutane.

[0012] A second aspect of the present application provides a transportation system, comprising a working fluid circulation component for cooling a screw conveying device as described in any one of the above items and a screw conveying device.

[0013] Further, the screw conveying device comprises: an outer shell and a screw conveying shaft;

[0014] The spiral conveying shaft can be rotatably disposed in the outer shell;

[0015] The working fluid pipeline includes a first passage;

[0016] The first passage is arranged in the middle of the screw conveying shaft and penetrates the screw conveying shaft along the axial direction of the screw conveying shaft;

[0017] Two ends of the first passage are connected to the expander and the pump body respectively.

[0018] Furthermore, the working fluid pipeline also includes a second passage;

[0019] An interlayer is arranged inside the shell wall of the outer shell;

[0020] The second passage is disposed in the interlayer;

[0021] The second passage penetrates the outer shell along the axial direction of the screw conveying shaft, and two ends of the second passage are respectively connected to the expander and the pump body.

[0022] Furthermore, the second passage extends throughout the interlayer.

[0023] Furthermore, an inlet is provided at an upper portion of one end of the outer shell;

[0024] An outlet is provided at the lower part of the other end of the outer shell;

[0025] The inlet is connected to the pump body;

[0026] The outlet is connected to the expander;

[0027] Two ends of the second passage are connected to the inlet and the outlet respectively.

[0028] Furthermore, a notch is provided on the wall surface of the interlayer on one side close to the spiral conveying shaft.

[0029] Furthermore, a plurality of fins are provided on the wall surface of the interlayer on the side close to the spiral conveying shaft.

[0030] It can be seen from the above technical scheme that the present application provides a working fluid circulation component and a transportation system for a cooling screw conveying device, wherein a working fluid circulation component for a cooling screw conveying device comprises: an expander, a condenser, a pump body and a working fluid pipeline; the working fluid pipeline is fitted into the screw conveying device for supplying organic working fluid to circulate; the outlet end of the working fluid pipeline, the expander, the condenser, the pump body and the inlet end of the working fluid pipeline are connected in sequence.

[0031] In the working fluid circulation component adopted by this scheme, the organic working fluid can flow in the expander, condenser, pump body and working fluid pipeline in sequence, and absorb the heat of the screw conveying device to make the expander work. Compared with the water cooling method, it can effectively improve the cooling efficiency and cooperate with the working fluid circulation component to improve the utilization rate of the waste heat energy of the screw conveying device, effectively solving the problem of low cooling efficiency of the cooling mechanism used in the existing screw conveyor. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present application 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 present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0033] Figure 1 A wireframe schematic diagram of a working medium circulation component for cooling a screw conveying device provided in an embodiment of the present application;

[0034] In the figure:

[0035] 11. expander; 12. condenser; 13. pump body; 14. working fluid pipeline; 15. generator; 141. first passage; 142. second passage;

[0036] 20. Screw conveying device; 21. Outer shell; 22. Screw conveying shaft; 23. Interlayer; 211. Inlet; 212. Outlet. DETAILED DESCRIPTION

[0037] The technical solutions of the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the specification of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection requested by the present application.

[0038] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0039] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a replaceable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0040] See also Figure 1 In the first aspect of the embodiments of the present application, a working fluid circulation component for cooling a screw conveying device is provided, comprising: an expander 11, a condenser 12, a pump body 13 and a working fluid pipeline 14; the working fluid pipeline 14 is attached to the screw conveying device 20 and is used for the circulation of organic working fluid; the outlet end of the working fluid pipeline 14, the expander 11, the condenser 12, the pump body 13 and the inlet end of the working fluid pipeline 14 are connected in sequence.

[0041] In this embodiment, the working fluid pipeline 14 and the screw conveying device 20 are fitted together, which means that the working fluid pipeline 14 and the screw conveying device 20 are fitted together at a higher temperature portion during the process of conveying high-temperature materials, for example, they may be fitted together with the screw conveying shaft or shell of the screw conveying device 20 .

[0042] Specifically, in this embodiment, the screw conveying device 20 in contact with the working fluid pipeline 14 functions as an evaporator. During operation, the organic working fluid flowing through the working fluid pipeline 14 can take away the heat of the screw conveying device 20 and absorb heat and vaporize; the organic working fluid can have a higher cooling efficiency than cooling water, thereby improving the cooling effect. At the same time, after the organic working fluid absorbs heat and vaporizes, it generates a certain pressure and flows into the expander 11 along the working fluid pipeline 14, so that the expander 11 outputs mechanical work to the outside, so that the heat absorbed by the organic working fluid can be utilized through the expander 11, thereby improving the waste heat energy utilization rate of the screw conveying device 20 for conveying high-temperature materials.

[0043] The pressure of the organic working fluid after the expander 11 is reduced, and after being cooled by the condenser 12, it is converted from gas to liquid, and then pumped into the working fluid pipeline 14 through the pump body 13 to perform the next heat absorption and heat release cycle.

[0044] In applications, the organic working fluid may be one of R123, R245fa, R152a, ethyl chloride, propane, n-butane and isobutane, whose boiling point is lower than that of water, thus enabling more efficient waste heat recovery and higher cooling efficiency.

[0045] In one embodiment, it further includes: a generator 15; the generator 15 is connected to the expander 11; and the expander 11 is used to drive the generator 15 to generate electricity.

[0046] That is, in this embodiment, the expander 11 is driven by the vaporized organic working medium to output mechanical work to the generator 15, so that the generator 15 generates electricity to utilize the heat absorbed by the organic working medium, thereby achieving the effect of improving energy utilization.

[0047] A second aspect of the present application provides a transportation system, comprising any of the above-mentioned working fluid circulation components for cooling the screw conveying device and a screw conveying device 20.

[0048] In a more specific embodiment, the screw conveying device 20 includes: an outer shell 21 and a screw conveying shaft 22; the screw conveying shaft 22 is rotatably arranged in the outer shell 21; the working fluid pipeline 14 includes a first passage 141; the first passage 141 is arranged in the middle of the screw conveying shaft 22, and penetrates the screw conveying shaft 22 along the axial direction of the screw conveying shaft 22; the two ends of the first passage 141 are respectively connected to the expander 11 and the pump body 13.

[0049] In this embodiment, spiral blades are provided on the outer periphery of the screw conveying shaft 22, so that the screw conveying shaft 22 can push the material to move and convey the material during the rotation in the outer shell 21. The first passage 141 passes through the axis of the screw conveying shaft 22, so that the organic working medium can take away the heat of the screw conveying shaft 22, so as to cool the screw conveying shaft 22.

[0050] In a further improved embodiment, the working fluid pipeline 14 also includes a second passage 142; an interlayer 23 is provided inside the shell wall of the outer shell 21; the second passage 142 is provided in the interlayer 23; the second passage 142 penetrates the outer shell 21 along the axial direction of the screw conveying shaft 22, and the two ends of the second passage 142 are respectively connected to the expander 11 and the pump body 13.

[0051] In this embodiment, after the pump body 13 pumps the organic working fluid into the working fluid pipeline 14, the organic working fluid enters the first passage 141 and the second passage 142. The organic working fluid passing through the first passage 141 absorbs the heat of the screw conveying shaft 22, and the working fluid passing through the second passage 142 absorbs the heat of the outer shell 21, thereby achieving synchronous cooling of the screw conveying shaft 22 and the outer shell 21.

[0052] In application, the second passage 142 is spread throughout the interlayer 23 ; specifically, the interlayer 23 of the outer shell 21 may be used as the second passage 142 , so that the organic working medium can pass through the outer periphery of the outer shell 21 , thereby achieving uniform cooling of the outer shell 21 .

[0053] Optionally, an inlet 211 is provided at the upper part of one end of the outer shell 21; an outlet 212 is provided at the lower part of the other end of the outer shell 21; the inlet 211 is connected to the pump body 13; the outlet 212 is connected to the expander 11; and both ends of the second passage 142 are connected to the inlet 211 and the outlet 212 respectively.

[0054] That is, in this embodiment, the organic working medium enters the interlayer 23 in a top-in and bottom-out manner, which helps the organic working medium to pass through the entire interlayer 23 and achieve uniform cooling of the outer shell 21 .

[0055] As an implementation method, a notch is provided on the wall surface of the interlayer 23 on one side close to the screw conveying shaft 22. The notch can increase the contact area between the outer shell 21 and the organic working medium, thereby achieving a better heat absorption effect.

[0056] As an implementation method, a plurality of fins are provided on the wall surface of the interlayer 23 on one side close to the screw conveying shaft 22. Similarly, by providing fins in the interlayer 23, the contact area between the outer shell 21 and the organic working medium can be increased, thereby achieving a better heat absorption effect.

[0057] The above are only preferred embodiments of the present application and are not intended to limit the present utility model. Although the present application has been described in detail with reference to the examples, those skilled in the art can still modify the technical solutions recorded in the aforementioned examples or make equivalent substitutions for some of the technical features therein. However, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A working fluid circulation assembly for cooling a screw conveyor, It is characterized in that include: An expander (11), a condenser (12), a pump body (13) and a working fluid pipeline (14); The working medium pipeline (14) is fitted with the spiral conveying device (20) and is used for allowing the organic working medium to flow; The outlet end of the working fluid pipeline (14), the expander (11), the condenser (12), the pump body (13), and the inlet end of the working fluid pipeline (14) are connected in sequence.

2. The working medium circulation assembly for cooling the screw conveyor according to claim 1, It is characterized in that Also includes: Generator (15); The generator (15) is connected to the expander (11); The expander (11) is used to drive the generator (15) to generate electricity.

3. The working medium circulation assembly for cooling the screw conveyor according to claim 1, It is characterized in that The organic working fluid is one of R123, R245fa, R152a, ethyl chloride, propane, n-butane and isobutane.

4. A transport system, It is characterized in that It comprises a working fluid circulation component for cooling a screw conveying device and a screw conveying device (20) as claimed in any one of claims 1 to 3.

5. The transport system according to claim 4, It is characterized in that The screw conveying device (20) comprises: an outer shell (21) and a screw conveying shaft (22); The spiral conveying shaft (22) is rotatably disposed in the outer shell (21); The working fluid pipeline (14) comprises a first passage (141); The first passage (141) is arranged at the middle portion of the screw conveying shaft (22) and penetrates the screw conveying shaft (22) along the axial direction of the screw conveying shaft (22); Both ends of the first passage (141) are connected to the expander (11) and the pump body (13) respectively.

6. The transport system according to claim 5, It is characterized in that The working fluid pipeline (14) further includes a second passage (142); An interlayer (23) is provided inside the shell wall of the outer shell (21); The second passage (142) is arranged in the interlayer (23); The second passage (142) penetrates the outer shell (21) along the axial direction of the screw conveying shaft (22), and two ends of the second passage (142) are respectively connected to the expander (11) and the pump body (13).

7. The transport system according to claim 6, It is characterized in that The second passage (142) extends throughout the interlayer (23).

8. The transport system according to claim 6, It is characterized in that An inlet (211) is provided at the upper portion of one end of the outer shell (21); An outlet (212) is provided at the lower portion of the other end of the outer shell (21); The inlet (211) is connected to the pump body (13); The outlet (212) is connected to the expander (11); Two ends of the second passage (142) are respectively connected to the inlet (211) and the outlet (212).

9. The transport system according to claim 6, It is characterized in that A notch is provided on the wall surface of the interlayer (23) on the side close to the spiral conveying shaft (22).

10. The transport system according to claim 6, It is characterized in that A plurality of fins are provided on the wall surface of the interlayer (23) on the side close to the spiral conveying shaft (22).

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