CN111795512B

CN111795512B - Fluid energy recovery assembly, system and absorption refrigeration/heat pump system

Info

Publication number: CN111795512B
Application number: CN202010546829.7A
Authority: CN
Inventors: 陈何根; 祝令辉
Original assignee: Pupan Energy Technology Research Institute Beijing Co ltd
Current assignee: Anhui Pupan Energy Technology Co ltd
Priority date: 2020-06-16
Filing date: 2020-06-16
Publication date: 2021-06-01
Anticipated expiration: 2040-06-16
Also published as: CN111795512A

Abstract

The invention relates to the technical field of energy conservation, and discloses a fluid energy recovery assembly, which comprises a first fluid conveying pipe; the second fluid conveying pipe is arranged inside the first fluid conveying pipe, one end of the second fluid conveying pipe extends from the side surface of the first fluid conveying pipe to the outside of the first fluid conveying pipe, the second fluid conveying pipe is divided into a first part and a second part, and the first part and the second part are connected through a connecting ring which is rotatably arranged; a first axial-flow rotating wheel is formed by fixing a plurality of first blades on the outer surface of the connecting ring, and a second axial-flow rotating wheel is arranged inside the connecting ring. The fluid energy recovery assembly can directly convert the redundant energy of a certain fluid into the driving force for the flow of another fluid, better achieves the effects of energy conservation and environmental protection, and has simple structure, lower use and maintenance cost and very wide application prospect.

Description

Fluid energy recovery assembly, system and absorption refrigeration/heat pump system

Technical Field

The invention relates to the technical field of energy conservation, in particular to a fluid energy recovery assembly, a fluid energy recovery system and an absorption refrigeration/heat pump system.

Background

The energy conservation and environmental protection is advocated for saving the existing energy consumption, the development of environment-friendly new energy is advocated, and the society is benefited, which is always a major direction of innovation and development of various industries, wherein the recycling of energy also belongs to one of the categories of energy conservation and environmental protection, and particularly, in the operation process of various process equipment of various industries, the energy of fluid is often required to be reduced so as to meet the requirement of equipment operation, and in the category, the pressure reduction of the fluid flowing under the action of pressure difference by using a pressure reducing valve belongs to the most common example of fluid energy reduction.

With the generation of the water turbine, it is a common fluid energy recycling method to convert the energy of fluid into mechanical energy and use the mechanical energy, but the mechanical structure of the water turbine limits the water turbine, so that the water turbine can only convert the energy of a certain fluid into mechanical energy, and then the mechanical energy is used to convert the energy into electric energy, so as to achieve the effects of energy saving and environmental protection.

In the chemical field and hydraulic engineering, especially in the application scenario of more fluid pipelines, the types of fluids are more, in the process of conveying the fluids, a pumping mode needs to be adopted, electric energy is used as the driving force for conveying the fluids, at the moment, if a water turbine is added, the fluid energy is converted into the driving force of a pumping device, and auxiliary equipment of hydroelectric generators needs to be additionally arranged, so that the whole formed system is huge, various in equipment and complex in structure, a large amount of manpower and financial resources need to be consumed in both use cost and maintenance, and for enterprises, the consumption of resources is also realized.

The present invention therefore proposes an improvement by the above-mentioned disadvantages of the fluid energy recovery process.

Disclosure of Invention

The invention aims to provide a fluid energy recovery assembly, a fluid energy recovery system and an absorption refrigeration/heat pump system, which can better achieve the effects of energy conservation and environmental protection by directly converting the redundant energy of a certain fluid into the conveying driving force of another fluid, and have simple structure, lower use and maintenance cost and very wide application prospect.

Technical scheme

In order to achieve the purpose, the invention adopts the main technical scheme that:

a fluid energy recovery assembly comprising:

a first fluid delivery tube;

a second fluid delivery tube disposed inside the first fluid delivery tube, the second fluid delivery tube having one end extending from a side of the first fluid delivery tube to an exterior of the first fluid delivery tube, the second fluid delivery tube having a gap with the first fluid delivery tube, wherein:

the second fluid conveying pipe is divided into a first part and a second part, and the first part and the second part are connected through a connecting ring which is rotatably arranged;

a plurality of first blades are fixed on the outer surface of the connecting ring to form a first axial-flow type rotating wheel, a second axial-flow type rotating wheel is arranged inside the connecting ring, and the outer ends of the second blades of the second axial-flow type rotating wheel are fixed on the inner surface of the connecting ring.

Preferably, the second part surface is fixed with the inner wall of the first fluid conveying pipe through a first fin.

Preferably, the second axial flow type rotating wheel comprises a wheel shaft, the wheel shaft is fixedly supported on the inner wall of the second fluid conveying pipe through a fixing piece in a rotating connection mode, and the fixing piece comprises a connecting shaft in rotating connection with one end of the wheel shaft and a second fin fixed between the connecting shaft and the inner wall of the second fluid conveying pipe.

A fluid energy recovery system comprises the fluid energy recovery assembly, wherein the first end of the second fluid conveying pipe or the same direction end of the first fluid conveying pipe and the first end of the second fluid conveying pipe is connected to the high-pressure side of one fluid, so that the one fluid can automatically flow in the first fluid conveying pipe or the second fluid conveying pipe under the action of pressure difference and correspondingly drive the second axial-flow type rotating wheel or the first axial-flow type rotating wheel to rotate.

An absorption refrigeration/heat pump system comprising the fluid energy recovery system described above, comprising an absorber, a generator, a condenser and an evaporator, wherein:

the absorption effect of the absorber on the lean solution is improved by arranging a solution pump I on the absorber to suck out the rich solution in the absorber and guide the rich solution into the absorber;

and a second solution pump is arranged between the absorber and the generator, so that the rich solution in the absorber is introduced into the generator for generation.

Preferably, the first fluid transfer pipe is erected between the generator and the absorber as a lean solution pipe.

Preferably, when the second end of the second fluid delivery pipe is located outside the first fluid delivery pipe, the first end of the second fluid delivery pipe is connected with the output end of the first solution pump or the second solution pump.

Preferably, when the second end of the second fluid delivery pipe is located inside the first fluid delivery pipe, the first end of the second fluid delivery pipe is connected with the output end of the first solution pump.

The invention has at least the following beneficial effects:

the double-tubular fluid energy recovery assembly is designed by utilizing the process that fluid circulates under the action of pressure difference, so that when one of the first fluid conveying pipe or the second fluid conveying pipe contains the fluid which actively circulates under the action of the pressure difference, correspondingly, the fluid can drive the first axial-flow rotating wheel or the second axial-flow rotating wheel to rotate, and correspondingly, the second axial-flow rotating wheel or the first axial-flow rotating wheel can provide driving force for the flow of the other fluid when rotating, and further, the energy of the fluid which actively flows under the action of the pressure difference is recovered and converted into the energy of the flow of the other fluid.

The fluid energy recovery system is effectively applied to the absorption refrigeration/heat pump system, so that the energy generated by the fluid in the lean solution pipeline under the action of pressure difference is effectively absorbed and is directly converted into the energy of the rich solution flowing in the rich solution pipeline, and therefore, the working load of the solution pump I or the solution pump II is reduced while the lean solution energy is recycled, the energy consumption of the absorption refrigeration/heat pump system is saved, and the energy-saving and environment-friendly performance of the absorption refrigeration/heat pump system is improved.

In addition, the whole rotating part of the fluid energy recovery assembly is arranged in the cavity, and all the connections with the outside are static connections, so that the effect equivalent to a shield pump is achieved.

Moreover, the fluid energy recovery system can effectively improve the heat exchange effect of two fluids, particularly the existence of the first fin and the second fin, so that the flow guide is more beneficial to heat exchange while the flow guide is carried out.

Drawings

FIG. 1 is a schematic view of a fluid energy recovery assembly according to an embodiment of the present invention;

FIG. 2 is an enlarged view taken at A of FIG. 1 in accordance with the present invention;

FIG. 3 is a schematic illustration of the second end of the second fluid transport tube within the first fluid transport tube according to the present invention;

fig. 4 is a schematic structural diagram of the fluid energy recovery system of the present invention applied to an absorption refrigeration/heat pump system.

[ description of reference ]

In the figure: the fluid energy recovery device comprises a fluid energy recovery assembly 100, a first fluid delivery pipe 101, a second fluid delivery pipe 102, a first part 1021, a second part 1022, a connection ring 103, a protrusion 1031, a notch 1032, a sealing ring 1033, a bearing 1034, a first blade 104, a first axial runner 105, a second axial runner 106, a wheel shaft 1061, a connection shaft 1081, a second fin 1082, a first fin 107, a fixing part 108, a fluid energy recovery system 200, an absorption refrigeration/heat pump system 300, an absorber 301, a generator 302, a condenser 303, an evaporator 304, a first solution pump 305 and a second solution pump 306.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 and 2, the present invention provides a fluid energy recovery assembly 100 comprising:

a first fluid delivery tube 101;

a second fluid delivery tube 102 disposed inside the first fluid delivery tube 101, the second fluid delivery tube 102 having one end extending from a side of the first fluid delivery tube 101 to an outside of the first fluid delivery tube 101, a gap being provided between the second fluid delivery tube 102 and the first fluid delivery tube 101, the gap providing a passage for a flow of a fluid, wherein:

the second fluid delivery pipe 102 is divided into a first part 1021 and a second part 1022, and the first part 1021 and the second part 1022 are connected by rotatably mounting a connection ring 103, specifically, two ends of the connection ring 103 located at one side of the inner surface are provided with protrusions 1031 protruding outwards, the first part 1021 and the second part 1022 are provided with annular notches 1032 corresponding to the protrusions 1031, and sealing rings 1033 and bearings 1034 are arranged in the notches 1032, wherein the two bearings 1034 are located between the two sealing rings 1033;

a first axial flow type runner 105 is formed by fixing a plurality of blades 104 on the outer surface of the connecting ring 103, a second axial flow type runner 106 is arranged inside the connecting ring 103, and the two outer ends of the blades of the second axial flow type runner 106 are fixed on the inner surface of the connecting ring 103.

Through the scheme, when actively flowing fluid is introduced from the first end of the second fluid conveying pipe 102, the fluid can drive the second axial-flow rotating wheel 106 to rotate, and the second axial-flow rotating wheel can drive the first blade 104 to rotate, so that the first axial-flow rotating wheel 105 and the second axial-flow rotating wheel 106 synchronously rotate, and at the moment, when the first axial-flow rotating wheel 105 rotates, driving force can be provided for the fluid flowing in the first fluid conveying pipe 101, and further, the energy of the fluid flowing in the second fluid conveying pipe 102 is effectively recycled;

as described above, it is also possible to recover energy of the fluid flowing through the first fluid transport pipe 101 and convert the recovered energy into driving force required for the fluid flowing through the second fluid transport pipe 102.

A first end of the second fluid delivery tube 102 extends outside the first fluid delivery tube 101 and a second end of the second fluid delivery tube 102 is located inside the first fluid delivery tube 101.

By the technical scheme, the fluid flowing out of the second end of the second fluid conveying pipe 102 is mixed with the fluid in the first fluid conveying pipe 101 to achieve the mixing effect, and the mixed fluid is synchronously conveyed by the first fluid conveying pipe 101.

The surface of the second part 1022 is fixed with the inner wall of the first fluid conveying pipe 101 through the first fins 107, so that the second part 1022 can be prevented from rotating along with the connecting ring 103, and the two ends of the connecting ring 103 can be fixed at the same time, and the stability is improved.

As shown in fig. 3, the second axial flow type runner 106 includes an axle 1061, the axle 1061 is fixedly supported on an inner wall of the second fluid delivery pipe 102 by rotatably connecting a fixing member 108, the fixing member 108 includes a connecting shaft 1081 rotatably connected to one end of the axle 1061 and a fin pair 1082 fixed between the connecting shaft 1081 and the inner wall of the second fluid delivery pipe 102, and the fixing member 108 is effectively used to fix the second axial flow type runner 106, so as to reduce an acting force between the second axial flow type runner 106 and the connecting ring 103, further reduce a supporting force of the connecting ring 103 to the second axial flow type runner 106, improve stability, and better protect a seal between the connecting ring 103 and the second fluid delivery pipe 102.

The invention provides a fluid energy recovery system 200, which comprises any one of the fluid energy recovery assemblies 100, wherein the first end of the second fluid conveying pipe 102 or the same-direction end of the first fluid conveying pipe 101 and the first end of the second fluid conveying pipe 102 is connected to the high-pressure side of one of the fluids, so that the one of the fluids can automatically flow in the first fluid conveying pipe 101 or the second fluid conveying pipe 102 under the action of pressure difference and correspondingly drive the second axial-flow runner 106 or the first axial-flow runner 105 to rotate.

Through the technical scheme, in the use process, a certain fluid under the action of pressure difference is used as an active flowing fluid and is connected into the first fluid conveying pipe 101 or the second fluid conveying pipe 102 to be used as an energy collecting source, so that the kinetic energy of the fluid is converted into the driving force when the other fluid moves, the fluid energy recovery system 200 can effectively improve the heat exchange effect of the two fluids, and particularly the first fin 107 and the second fin 1082 exist, so that the flow guide is more beneficial to heat exchange while the flow guide is carried out.

The present invention also provides an absorption refrigeration/heat pump system 300 comprising the fluid energy recovery system 200 described above, comprising an absorber 301, a generator 302, a condenser 303 and an evaporator 304, wherein:

the absorption effect of the absorber 301 on the lean solution is improved by arranging a solution pump I305 on the absorber 301 to suck out and introduce the rich solution in the absorber 301 into the absorber 301;

the introduction of the rich solution in the absorber 301 into the generator 302 occurs by providing a second solution pump 306 between the absorber 301 and the generator 302.

A first fluid transfer pipe 101 is erected between the generator 302 and the absorber 301, and serves as a lean solution pipe for guiding a lean solution formed after the rich solution in the generator 302 is generated back to the absorber 301 to be absorbed, and reforming the rich solution for recycling.

As shown in fig. 4, when the second end of the second fluid delivery tube 102 is located inside the first fluid delivery tube 101, the first end of the second fluid delivery tube 102 is connected to the output end of the first solution pump 305.

By adopting the technical scheme, when the first end of the second fluid conveying pipe 102 is connected with the output end of the solution pump 305, the lean solution in the first fluid conveying pipe 101 flows from the generator 302 to the absorber 301 under the action of the pressure difference between the absorber 301 and the generator 302, the first axial-flow runner 105 is driven to rotate, the first axial-flow runner 105 enables the second axial-flow runner 106 to rotate through the connecting ring 103, and the second axial-flow runner 106 provides driving force for the flow of the rich solution which is extracted from the generator 302 and returned, so that part of energy consumption of the solution pump 305 can be saved, meanwhile, the lean solution which enters the absorber 301 from the generator 302 can be decompressed, the pressure-bearing amplitude of the pressure-reducing valve on the lean solution pipeline is reduced, and the rich solution flowing out from the second end of the second fluid conveying pipe 102 can be mixed with the lean solution in the first fluid conveying pipe 101 before entering the absorber 301, so as to achieve the mixing effect, and after mixing, the first fluid conveying pipe 101 continues to convey the mixed fluid into the absorber 301 synchronously, which has a good advantage.

From the above process, the present invention combines the advantages of the fluid energy recovery assembly 100 with the pressure difference existing in the lean solution pipeline between the generator 302 and the absorber 301 in the absorption refrigeration/heat pump system 300, and realizes the pressure reduction of the lean solution and the recovery of the fluid energy of the lean solution in the lean solution pipeline, and converts the fluid energy into the driving power of the solution pump one 305 to the rich solution, so as to reduce the energy consumption of the solution pump one 305, and has the advantages of energy saving and environmental protection, while the temperature in the generator 302 is different from the temperature of the absorber 301, the prior art generally adopts a heat exchanger to recover heat.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a reference structure" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A fluid energy recovery assembly, comprising:

a first fluid delivery tube (101);

a second fluid delivery tube (102) disposed inside the first fluid delivery tube (101), the second fluid delivery tube (102) having one end extending from a side of the first fluid delivery tube (101) to an outside of the first fluid delivery tube (101), the second fluid delivery tube (102) having a gap with the first fluid delivery tube (101), wherein:

the second fluid conveying pipe (102) is divided into a first part (1021) and a second part (1022), and the first part (1021) and the second part (1022) are connected through a connecting ring (103) which is rotatably arranged;

a first axial flow type rotating wheel (105) is formed by fixing a plurality of first blades (104) on the outer surface of the connecting ring (103), a second axial flow type rotating wheel (106) is arranged inside the connecting ring (103), and the two outer ends of the blades of the second axial flow type rotating wheel (106) are fixed on the inner surface of the connecting ring (103).

2. The fluid energy recovery assembly of claim 1 wherein the second portion (1022) surface is secured to the inner wall of the first fluid transport tube (101) by a first fin (107).

3. The fluid energy recovery assembly according to claim 2, wherein the second axial runner (106) comprises an axle (1061), the axle (1061) is fixedly supported on the inner wall of the second fluid delivery pipe (102) by a rotary connection fixing member (108), and the fixing member (108) comprises a connecting shaft (1081) rotatably connected with one end of the axle (1061) and a second fin (1082) fixed between the connecting shaft (1081) and the inner wall of the second fluid delivery pipe (102).

4. A fluid energy recovery system comprising the fluid energy recovery assembly (100) according to any one of claims 1 to 3, wherein the first end of the second fluid delivery pipe (102) or the same direction end of the first fluid delivery pipe (101) as the first end of the second fluid delivery pipe (102) is connected to the high pressure side of one of the fluids, so that the one of the fluids can automatically flow in the first fluid delivery pipe (101) or the second fluid delivery pipe (102) under the action of the pressure difference and correspondingly drive the second axial runner (106) or the first axial runner (105) to rotate.

5. An absorption refrigeration/heat pump system comprising the fluid energy recovery system (200) of claim 4, characterized by an absorber (301), a generator (302), a condenser (303) and an evaporator (304), wherein:

the absorption effect of the absorber (301) on the lean solution is improved by arranging a first solution pump (305) on the absorber (301) to suck out the rich solution in the absorber (301) and introduce the rich solution into the absorber (301);

and a second solution pump (306) is arranged between the absorber (301) and the generator (302), so that the rich solution in the absorber (301) is introduced into the generator (302) for generation.

6. An absorption refrigeration/heat pump system according to claim 5, characterized in that the first fluid duct (101) is erected between the generator (302) and the absorber (301) as a lean solution conduit.

7. The absorption refrigeration/heat pump system according to claim 6, wherein the first end of the second fluid delivery pipe (102) is connected to the output of the solution pump one (305) or the solution pump two (306) when the second end of the second fluid delivery pipe (102) is outside the first fluid delivery pipe (101).

8. The absorption refrigeration/heat pump system according to claim 7, wherein a first end of the second fluid delivery pipe (102) is connected to an output of the first solution pump (305) when a second end of the second fluid delivery pipe (102) is located inside the first fluid delivery pipe (101).