CN111351122B

CN111351122B - A wind-heating unit with an external evaporator and a wind-energy power system

Info

Publication number: CN111351122B
Application number: CN202010157387.7A
Authority: CN
Inventors: 钟晓晖; 张明明; 孙香宇; 徐建中
Original assignee: Institute of Engineering Thermophysics of CAS
Current assignee: Institute of Engineering Thermophysics of CAS
Priority date: 2020-03-09
Filing date: 2020-03-09
Publication date: 2021-09-21
Anticipated expiration: 2040-03-09
Also published as: CN111351122A

Abstract

The embodiment of the disclosure provides an external wind-heat unit of an evaporator and a wind-heat power system, and belongs to the technical field of mechanical engineering. By adopting the wind-heat unit provided by the embodiment of the disclosure, the evaporator is fixed outside the tower and connected to the engine room, so that the evaporator can rotate along with the engine room, and the evaporator can always face the wind. The structural design can make the external convection heat exchange of the evaporator strong, and further can better avoid frosting.

Description

External wind-heat unit of evaporimeter and wind energy power system

Technical Field

The utility model relates to a mechanical engineering technical field especially relates to an external wind-heat unit of evaporimeter and wind energy power system.

Background

With the improvement of the urbanization rate, the removal of small regional boilers and the transformation of pipe networks in old urban areas, the centralized heating of cities and towns in China has a huge gap, the heating area of residences in cities and towns in China keeps high-speed growth in recent years, but the coverage rate of the centralized heating of China is still at a low level, a centralized heating system is only built in main cities and towns in northern provinces at present, the average coverage rate is less than 50%, the cities and towns in south and vast rural areas in China basically have no centralized heating facilities, the cities and towns in developed countries such as Finland and Denmark can be heated only by independent heating modes such as a natural gas furnace, an air conditioner, an electric furnace and honeycomb briquette, the coverage rate of the urban centralized heating of the cities and the cities in the countries such as Finland and the Denmark is up to 90%, and the national average level is also more than 60%.

The urban heat supply industry in China still uses coal as main fuel, the annual coal consumption is more than 1.5 hundred million tons, and the lagging capacity of high pollution and low efficiency in the industry is more than 50 percent. 2013, the heating mode of the coal-fired boiler is banned in China in the first year, and the situation of energy shortage comes along with the coming of the northern heating season. Because coal heating is eliminated, solar energy, wind energy and other clean energy sources gradually become new heating force in winter. China has rich wind energy resources and has a prospect of large-scale development and utilization. The wind energy heat supply can solve the pollution problem caused by coal heating on one hand, and can relieve the problem of wind power abandoning and electricity limiting on the other hand. And the wind-heat unit of the compressor is directly driven by the wind turbine, so that the energy conversion loss in the intermediate conversion process can be effectively reduced, the wind energy utilization efficiency is improved, and the heat supply gap in China is filled.

With the wind power supply, the research on the aspect is also more and more concerned. In a wind energy heating system, an evaporator is one of essential components, and the evaporator is mainly used as a device for heating a refrigerant and absorbing heat to the outside. In the working process of the evaporator, the temperature of the evaporator body can be reduced to be below zero, the surrounding moisture can be condensed into frost quickly, the evaporator cannot be in the best working state after the frost is formed, and the heating capacity and the energy efficiency ratio of the heat pump unit are easily reduced for a long time, so that energy loss is caused.

Disclosure of Invention

In view of the above, embodiments of the present disclosure provide a wind-heat unit with an external evaporator and a wind-heat power system, which at least partially solve the problems in the prior art.

In a first aspect, the disclosed embodiment provides a wind turbine set with an external evaporator, the wind turbine set is used in a wind power system including a wind turbine, the wind turbine includes a tower and a nacelle mounted on the top of the tower, and the wind turbine set includes an evaporator and a fixing component for rotatably fixing the evaporator outside the tower;

the evaporator is connected with the engine room through a fixing strip, one end of the fixing strip is connected with the engine room, the other end of the fixing strip is connected with the evaporator, the evaporator rotates along with the engine room when the engine room rotates, and the evaporator rotates along with the engine room when the engine room rotates.

According to a specific implementation manner of the embodiment of the disclosure, the fixing assembly comprises a first installation part sleeved on the tower, and a groove used for clamping the evaporator is formed in one surface, facing the cabin, of the first installation part.

According to a specific implementation of the embodiments of the present disclosure, the first mounting member is a thrust bearing.

According to a specific implementation manner of the embodiment of the disclosure, the fixing assembly further comprises a second mounting piece sleeved on the tower, and first fixing pieces are arranged on two sides of the second mounting piece in the radial direction;

the first fixing sheet is provided with a first fixing hole, and the evaporator is provided with a second fixing hole matched with the first fixing hole;

the fixing assembly further comprises a first fixing piece used for fixedly connecting the evaporator with the second mounting piece, and the first fixing piece penetrates through the first fixing hole and the second fixing hole.

According to a specific implementation of the embodiments of the present disclosure, the second mounting member is a fixed bearing.

According to a specific implementation manner of the embodiment of the disclosure, second fixing pieces are arranged on two sides of the engine room, and third fixing holes are formed in the second fixing pieces;

one end of the fixing strip, which is close to the evaporator, is provided with a fourth fixing hole for fixing the evaporator;

the evaporator is provided with a fifth fixing hole matched with the first fixing hole;

the other end of the fixing strip is provided with a sixth fixing hole matched with the third fixing hole;

the fixed subassembly still including be used for with the evaporimeter with cabin fixed connection's second mounting and third mounting, the second mounting is worn to establish the third fixed orifices of second stationary blade with the sixth fixed orifices of fixed strip will the one end of fixed strip is connected on the cabin, the third mounting is worn to establish the fifth fixed orifices of evaporimeter and the fourth fixed orifices of fixed strip, will the other end of fixed strip is connected on the evaporimeter.

According to a specific implementation manner of the embodiment of the disclosure, the evaporator comprises a hollow plate, a coil pipe arranged in the hollow plate and fins arranged on one surface of the hollow plate, which faces away from the tower, wherein one surface of the hollow plate, which faces the tower, is a curved surface attached to the outer peripheral surface of the tower.

According to a specific implementation manner of the embodiment of the disclosure, the wind-heat unit further comprises a compressor, a condenser, a phase change heat accumulator and an expansion valve which are arranged in the cabin, wherein the compressor is connected with the wind turbine, and the wind turbine drives the compressor to work;

the compressor, the condenser, the phase change heat accumulator, the expansion valve and the evaporator are connected through pipelines to realize thermal circulation;

the compressor is used for compressing gas into high-temperature high-pressure gas to be conveyed to the condenser through a pipeline, the condenser is used for enabling the gas to be condensed and release heat to heat circulating water outside a coil pipe of the condenser, the condensed gas flows back to the evaporator through an expansion valve and is sucked into the compressor after being evaporated, and the phase change heat accumulator is used for storing heat of the circulating water to convey the high-temperature circulating water to a heat user.

In a second aspect, embodiments of the present disclosure provide a wind energy power system including a wind turbine and a wind heat unit with an external evaporator as described above.

According to a specific implementation of the embodiment of the present disclosure, the wind turbine is a horizontal axis wind turbine.

The wind turbine unit comprises an evaporator and a fixing component used for rotatably fixing the evaporator outside the tower, the evaporator is connected with the cabin through a fixing strip, one end of the fixing strip is connected with the cabin, the other end of the fixing strip is connected with the evaporator, and the evaporator rotates along with the cabin when the cabin rotates. By adopting the wind-heat unit provided by the embodiment of the disclosure, the evaporator is fixed outside the tower and connected to the engine room, so that the evaporator can rotate along with the engine room, and the evaporator can always face the wind. The structural design can make the external convection heat exchange of the evaporator strong, and further can better avoid frosting.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings needed to be used in the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is an exploded view of an external air heating unit with an evaporator according to an embodiment of the present disclosure;

FIG. 2 is a side view of an external air heating unit with an evaporator according to an embodiment of the disclosure;

fig. 3 is a schematic structural diagram of an evaporator in an external air heating unit with an evaporator according to an embodiment of the present disclosure;

FIG. 4 is a right side view of an evaporator in an external air heating unit provided with the evaporator according to an embodiment of the disclosure;

FIG. 5 is a schematic structural view of a thrust bearing in an external air heating unit with an evaporator according to an embodiment of the present disclosure;

FIG. 6 is a schematic view of a fixed bearing structure in an external air heating unit with an evaporator according to an embodiment of the present disclosure;

fig. 7 is a schematic view of a wind power system provided in an embodiment of the present disclosure.

Summary of reference numerals:

wind heat machine set-100, wind energy power system-101, tower-1011, cabin-1012, wind wheel-1013 and machine head-1014;

an evaporator-102, a second fixing hole-1021, a rib-1022;

a compressor-103, a condenser-104, a phase change heat accumulator-105, an expansion valve-106 and a circulating water pump-107;

thrust bearing-108, groove-1081;

a fixed bearing-109, a first fixing piece-1091;

fixed bar-110, hot user-111.

Detailed Description

The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

The embodiments of the present disclosure are described below with specific examples, and other advantages and effects of the present disclosure will be readily apparent to those skilled in the art from the disclosure in the specification. It is to be understood that the described embodiments are merely illustrative of some, and not restrictive, of the embodiments of the disclosure. The disclosure may be embodied or carried out in various other specific embodiments, and various modifications and changes may be made in the details within the description without departing from the spirit of the disclosure. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

It is noted that various aspects of the embodiments are described below within the scope of the appended claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the disclosure, one skilled in the art should appreciate that one aspect described herein may be implemented independently of any other aspects and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method practiced using any number of the aspects set forth herein. Additionally, such an apparatus may be implemented and/or such a method may be practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.

It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present disclosure, and the drawings only show the components related to the present disclosure rather than the number, shape and size of the components in actual implementation, and the type, amount and ratio of the components in actual implementation may be changed arbitrarily, and the layout of the components may be more complicated.

In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects may be practiced without these specific details.

Referring to fig. 1, a schematic structural diagram of an external wind heating unit 100 with an evaporator 102 according to an embodiment of the present disclosure is provided.

As shown in fig. 1, 2 and 7, the wind turbine assembly 100 is applied to a wind energy power system 101 comprising a wind turbine, the wind turbine comprises a tower 1011 and a nacelle 1012 mounted on the top end of the tower 1011, the wind turbine assembly comprises an evaporator 102 and a fixing component for rotatably fixing the evaporator 102 outside the tower 1011, the evaporator 102 is connected with the nacelle 1012, and the evaporator 102 rotates with the nacelle 1012 when the nacelle 1012 rotates.

Specifically, the wind-heat set 100 in the embodiment of the present disclosure is used in a wind-energy power system 101, and the wind-energy power system 101 is a wind-energy heating system. The wind energy heat exchange system comprises a wind turbine and a wind energy unit connected with the wind turbine, the wind turbine comprises a wind wheel 1013, a tower 1011 and a cabin 1012, the cabin 1012 is installed at the top end of the tower 1011, the wind turbine has an automatic yawing function, and the cabin 1012 can rotate with the wind and always keep the windward direction.

The wind-heat unit comprises an evaporator 102 and a fixing component for rotatably fixing the evaporator 102 outside the tower 1011, wherein the rotatably fixing of the evaporator 102 outside the tower 1011 specifically comprises: the evaporator 102 can rotate along the circumference of the tower 1011, the power for the evaporator 102 to rotate along the circumference of the tower 1011 comes from the nacelle 1012, the evaporator 102 is connected with the nacelle 1012, and therefore when the nacelle 1012 rotates with the wind, the evaporator 102 can also rotate along with the wind, so that the evaporator 102 is always in the windward direction. This configuration is designed so that if the working substance in the evaporator 102 is-2 c and the outside air is 5 c, the temperature of the evaporator 102 will approach-2 c if on the leeward side or elsewhere, and the temperature will tend to frost. On the windward side, 5 ℃ wind always blows from the front side, the evaporator 102 can keep relatively high temperature close to 5 ℃, better evaporation effect can be achieved, and frosting is not easy to happen.

The fixing component may be a support platform installed on the outer periphery of the tower 1011 for supporting the evaporator 102, and during the rotation of the evaporator 102 with the nacelle 1012, the bottom of the evaporator 102 rotates on the support platform, and further, a sliding member may be additionally installed on the bottom of the evaporator 102, and a rail may be additionally installed on the surface of the support platform, so that the rotation of the evaporator 102 on the support platform is smoother. The fixing component may also be a plurality of support rods arranged on the periphery of the tower 1011 for supporting the evaporator 102, the plurality of support rods are arranged in parallel at equal intervals along the circumferential direction of the tower 1011, and the support rods may be provided with clamping grooves for clamping the evaporator 102 on the support rods. During rotation of the evaporator 102 with the nacelle 1012, the bottom of the evaporator 102 rotates along the catch. Of course, in other embodiments, the fixing assembly may be in other forms, so as to fix the evaporator 102 outside the tower 1011 without obstructing the rotation of the evaporator 102 along the circumference of the tower 1011.

With the wind heating unit according to the embodiment of the present disclosure, the evaporator 102 can always face the wind by fixing the evaporator 102 outside the tower 1011 and by connecting the evaporator 102 to the nacelle 1012 so that the evaporator 102 can rotate together with the nacelle 1012. Due to the structural design, the external convection heat exchange of the evaporator 102 is strong, and the frosting can be better avoided.

In the embodiment of the present disclosure, the fixing assembly includes a first mounting member sleeved on the tower 1011, and a surface of the first mounting member facing the nacelle 1012 is provided with a groove 1081 for clamping the evaporator 102.

Specifically, as shown in fig. 3 and 4, the evaporator 102 includes an aluminum plate with hollows, and a coil pipe disposed inside the aluminum plate. The first mounting element is mounted on the tower 1011 and a recess 1081 is provided in a side of the first mounting element facing the nacelle 1012. In order to improve the stability of clamping the evaporator 102, a clamping plate matching with the groove 1081 is additionally arranged at the bottom of the aluminum plate of the evaporator 102, when the evaporator 102 is installed, the clamping plate of the evaporator 102 is clamped in the groove 1081, the depth of the groove 1081 is determined to be capable of fixing the evaporator 102, and in this embodiment, the height of the aluminum plate of the evaporator 102 can be set to be one half of the height of the aluminum plate.

The first mounting member of the disclosed embodiment for fixing the evaporator 102 outside the tower 1011 simplifies the structure of the fixing assembly, and the groove 1081 formed on the first mounting member improves the stability of fixing the evaporator 102.

In the disclosed embodiment, referring to fig. 5, the first mount is a thrust bearing 108.

The thrust bearing 108 can make the evaporator 102 on the bearing rotate along the central axis, when the thrust bearing 108 is the first mounting component, the thrust bearing 108 is in a structure from top to bottom along the direction of the nacelle 1012, and a groove 1081 for fixing the evaporator 102 is opened on one surface of the thrust bearing 108 close to the nacelle 1012, facing the nacelle 1012. When the evaporator 102 is installed, the thrust bearing 108 is firstly sleeved on the tower 1011, and a support sheet is arranged on the outer side of the tower 1011 and used for installing the thrust bearing 108. After the thrust bearing 108 is installed, the bottom of the evaporator 102 is clamped in a groove 1081 on a bearing sheet of the thrust bearing 108 close to the nacelle 1012.

The thrust bearing 108 is used as a first mounting part to fix the evaporator 102, so that the thrust bearing 108 can support and fix the evaporator 102 and can assist the evaporator 102 to rotate along the circumference of the tower 1011, the friction force to which the evaporator 102 is subjected during rotation is reduced, and the resistance to rotation is reduced.

Further, as shown in fig. 6, the fixing assembly further includes a second mounting part sleeved on the tower 1011, and first fixing pieces 1091 are arranged on two sides of the second mounting part in the radial direction;

the first fixing piece 1091 is provided with a first fixing hole, and the evaporator 102 is provided with a second fixing hole 1021 matched with the first fixing hole;

the fixing assembly further includes a first fixing member for fixedly connecting the evaporator 102 and the second mounting member, and the first fixing member is disposed through the first fixing hole and the second fixing hole 1021.

Specifically, the second mounting member may be a ring sleeved on the tower 1011, and the selected material may be a metal material, such as steel, iron, or other metal material with higher strength. First fixing pieces 1091 are arranged on two sides of the second mounting piece, first fixing holes are formed in the first fixing pieces 1091 and used for being matched with second fixing holes 1021 in the evaporator 102, and the evaporator 102 is fixed on the second mounting piece through the first fixing pieces penetrating through the first fixing holes and the second fixing holes 1021. The fixing member for fixing may be a screw and a nut, but may also be other fixing members for fixing the evaporator 102 to the second mounting member. The second mounting member is adopted by the disclosed embodiment to further fix the evaporator 102, so that the stability of fixing the evaporator 102 outside the tower 1011 is improved. Preferably, the second mounting member in this embodiment is a fixed bearing 109.

In another preferred embodiment, two sides of the nacelle 1012 are provided with second fixing plates, and the second fixing plates are provided with third fixing holes;

a fourth fixing hole for fixing the evaporator 102 is formed at one end of the fixing strip 110 close to the evaporator 102;

a fifth fixing hole matched with the fourth fixing hole is formed in the evaporator 102;

the other end of the fixing strip 110 is provided with a sixth fixing hole matched with the third fixing hole;

the fixing assembly further includes a second fixing member and a third fixing member for fixedly connecting the evaporator 102 and the nacelle 1012, the second fixing member is inserted in a third fixing hole of the second fixing plate and a sixth fixing hole of the fixing strip 110, and the third fixing member is inserted in a fifth fixing hole of the evaporator 102 and a fourth fixing hole of the fixing strip 110.

Specifically, second fixing pieces for fixedly mounting the evaporator 102 are also provided on both sides of the nacelle 1012, and third fixing holes for fitting with fixing pieces are also opened on the second fixing pieces. The third fixing hole is used for connecting the fixing strip 110, and the other end of the fixing strip 110 is connected to the evaporator 102. The fixing strip 110 is provided with a fourth fixing hole for fixing the evaporator 102, and the evaporator 102 is provided with a fifth fixing hole matched with the fourth fixing hole, wherein the fifth fixing hole and the second fixing hole 1021 may be the same hole, that is, when the fixing strip 110 is installed, the fixing strip 110 is clamped between the evaporator 102 and the first fixing piece 1091 of the fixing bearing 109. The end of the fixing strip 110 far away from the evaporator 102 is fixedly installed through a third fixing hole of a second fixing sheet on the nacelle 1012 and a sixth fixing hole on the fixing strip 110 by a second fixing member, and the end close to the evaporator 102 is installed through a fifth fixing hole on the evaporator 102 and a fourth fixing hole of the fixing strip 110 by a third fixing member. By connecting the nacelle 1012 and the evaporator 102 through the fixing bar 110 according to the present embodiment, the connection structure is simplified, and the resistance to the rotation of the evaporator 102 during the rotation of the nacelle 1012 is reduced. During operation, the wind turbine automatically faces the wind and yaws, the cabin 1012 rotates to drive the evaporator 102 to rotate through the fixing strip 110, so that the front of the evaporator 102 always faces the wind, and convection heat transfer is enhanced.

Furthermore, when the evaporator 102 is fixed by using the fixing bearing 109, the end of the fixing bar 110 away from the nacelle 1012 is clamped between the fixing bearing 109 and the evaporator 102 and fixed by a screw and a nut. This enables the evaporator 102 to be attached to the nacelle 1012, and also reinforces the mounting of the evaporator 102 outside the tower 1011.

Further, the evaporator 102 includes a hollow plate, a coil disposed in the hollow plate, and a rib 1022 disposed on a surface of the hollow plate opposite to the tower 1011, where a surface of the hollow plate facing the tower 1011 is a curved surface capable of being attached to an outer peripheral surface of the tower 1011.

Referring to fig. 3 and 4, the evaporator 102 is mainly composed of a hollowed-out plate, a coil, and fins 1022. The hollow plate is a semi-cylindrical aluminum plate, the aluminum plate is semi-cylindrical, the inner hollow is provided with a pipeline, one side of the hollow plate is an inlet, and the other side of the hollow plate is an outlet. Refrigerant gas enters from the inlet, flows into the bottom, then absorbs heat gradually along the coil pipe and rises. Both the inlet and outlet are piped up into the nacelle 1012, with the inlet piped connected to the expansion valve 106 and the outlet piped connected to the compressor 103. On the outside of the aluminum plate there are closely spaced fins 1022 running transversely, which fins 1022 face the incoming wind for enhanced heat transfer. By adopting the evaporator 102 of the embodiment of the disclosure, the outer peripheral surface of the tower 1011 can be attached for installation, so that the evaporator 102 is more stably installed on the outer peripheral surface of the tower 1011, and the occupied area of the evaporator 102 during installation is reduced.

The wind turbine generator set of the embodiment of the disclosure utilizes the automatic yaw function of the wind turbine, and utilizes the fixing bar 110 to fix the evaporator 102 and the nacelle 1012, so that the evaporator 102 and the nacelle 1012 rotate together. The evaporator 102 is rotatable along the outer circumference of the tower 1011 by a thrust bearing 108 and a fixed bearing 109. When the wind turbine is in yaw, the cabin 1012 drives the external evaporator 102 to rotate and automatically face the wind, so that better heat exchange conditions are obtained. When the wind blows to the evaporator 102, the air exchanges heat with the fins 1022 and the aluminum hollowed plate, so that the refrigerant in the coil absorbs heat and evaporates, and is sent to the compressor 103 in the cabin 1012 through the outlet pipeline for compression, and the heat pump cycle is completed.

Corresponding to the above method embodiment, as shown in fig. 7, the embodiment of the present disclosure further provides a wind energy power system 101, where the wind energy power system 101 includes a wind turbine and a wind heat unit 100 with an external evaporator 102 as described above.

Specifically, the wind turbine comprises a wind wheel 1013, a machine head 1014, a tower 1011 and a nacelle 1012 mounted on the top end of the tower 1011, the wind turbine further comprises a compressor 103, a condenser 104, a phase change heat accumulator 105 and an expansion valve 106 mounted in the nacelle 1012, the compressor 103 is connected with the wind turbine, and the compressor 103, the condenser 104, the phase change heat accumulator 105, the expansion valve 106 and the evaporator 102 are connected through pipelines to realize heat circulation;

As shown in fig. 7, in the wind power system 101 according to the embodiment of the present disclosure, a compressor 103 is driven by a wind turbine, a low-pressure working medium gas is compressed into a high-temperature and high-pressure gas and is sent to a condenser 104, at the same time, water forcibly circulated by a circulating water pump 107 also passes through the condenser 104, the working medium gas condenses to release heat so as to heat circulating water, and the circulating water completes circulation through a phase change heat accumulator 105 and a heat consumer 110 in sequence. The working medium gas is cooled to liquid, throttled by the expansion valve 106, cooled, and then flows into the evaporator 102 again for evaporation, and finally is sucked into the compressor 103 to complete the heat pump cycle.

Specifically, the wind turbine may be a horizontal shaft wind turbine, which mainly includes a fixed tower 1011, a wind wheel 1013, a main shaft, a gear box, and a control system, and mainly functions to drive the compressor 103 to work.

The condenser 104 is a vertical tank structure, and mainly comprises a spiral coil and a tank body. The high-temperature and high-pressure gas compressed by the compressor 103 passes through the coil pipe from top to bottom, and circulating water flows into the coil pipe from the bottom of the tank to exchange heat with the gas in the coil pipe and flows out from the top of the tank.

Phase change heat accumulator 105 is vertical tank-type structure, and the circulating water after condenser 104 heating flows in from spiral coil upper portion, is phase change material outside the coil, and when the circulation temperature was higher than phase change material's phase transition point, phase change material heat absorption made the temperature decline, and when the circulation temperature was less than the phase transition point, phase change material exothermic messenger's temperature rose to it is comparatively stable to make the coil pipe flow the temperature.

The working process of the wind power system 101 is as follows:

the wind turbine drives the compressor 103 to operate, sucks in medium-temperature and medium-pressure refrigerating gas and compresses the refrigerating gas into high-temperature and high-pressure refrigerant gas, the refrigerant gas flows through the coil from top to bottom in the condenser 104, and circulating water outside the coil is heated by condensation heat released. The heated circulating water is driven by a circulating water pump 107 to flow into the phase change heat accumulator 105 through a hose in the middle of a tower 1011, hot water flows in from the upper part of a coil pipe of the phase change heat accumulator 105, the coil pipe is externally provided with a phase change material, when the temperature of the hot water is higher than a phase change point of the phase change material, the phase change material absorbs heat to reduce the water temperature, when the temperature of the hot water is lower than the phase change point, the phase change material releases heat to heat the circulating water, so that the influence of the fluctuation of the wind speed on the output water temperature is reduced, and a stable heat source can be output for a heat user 110 all the time.

The high-temperature high-pressure refrigerant gas is changed into medium-temperature high-pressure gas after releasing heat in the condenser 104, and is changed into low-temperature low-pressure liquid after being decompressed by the expansion valve 106. The low temperature, low pressure refrigerant liquid flows into the evaporator 102 through the inlet conduit of the external evaporator 102.

The wind power system 101 shown in fig. 7 may correspondingly execute the content in the above method embodiment, and details of the part not described in detail in this embodiment refer to the content described in the above method embodiment, which is not described herein again.

The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present disclosure should be covered within the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. A wind-heating unit with an external evaporator, wherein the wind-heating unit is applied in a wind energy power system comprising a wind turbine, and the wind turbine comprises a tower and a nacelle mounted on the top of the tower , the air-heating unit comprises an evaporator and a fixing assembly for rotatably fixing the evaporator outside the tower;

The evaporator includes a hollow plate, a coil arranged in the hollow plate, and a rib arranged on the side of the hollow plate facing away from the tower, and the side of the hollow plate facing the tower is the same as the one. the curved surface to which the outer peripheral surface of the tower is attached, the hollow plate is a semi-cylindrical aluminum plate, and the aluminum plate is semi-cylindrical;

The evaporator and the nacelle are connected by a fixing bar, one end of the fixing bar is connected to the nacelle, and the other end of the fixing bar is connected to the evaporator, and the evaporator follows the rotation of the nacelle with the The nacelle is turned so that the evaporator is always facing the wind.

2 . The air-heating unit with an external evaporator according to claim 1 , wherein the fixing assembly comprises a first mounting member sleeved on the tower frame, and the first mounting member faces the nacelle. 3 . A groove for clamping the evaporator is opened on one side.

3 . The air-heating unit with an external evaporator according to claim 2 , wherein the first mounting member has a thrust bearing. 4 .

4 . The air-heating unit with an external evaporator according to claim 1 , wherein the fixing assembly further comprises a second mounting member sleeved on the tower frame, and the second mounting member is along the Both sides of the second mounting member in the radial direction are provided with first fixing pieces;

The first fixing plate is provided with a first fixing hole, and the evaporator is provided with a second fixing hole matched with the first fixing hole;

The fixing assembly further includes a first fixing member for fixing the evaporator and the second mounting member, the first fixing member passing through the first fixing hole and the second fixing hole.

5 . The air-heating unit with an external evaporator according to claim 4 , wherein the second mounting member is a fixed bearing. 6 .

6 . The air-heating unit with an external evaporator according to claim 1 , wherein the two sides of the nacelle are provided with second fixing sheets, and the second fixing sheets are provided with third fixing holes; 6 .

A fourth fixing hole for fixing the evaporator is opened at one end of the fixing strip close to the evaporator;

The evaporator is provided with a fifth fixing hole matched with the fourth fixing hole;

The other end of the fixing bar is provided with a sixth fixing hole matched with the third fixing hole;

The fixing assembly further includes a second fixing member and a third fixing member for fixedly connecting the evaporator and the nacelle, the second fixing member passing through the third fixing hole of the second fixing sheet and the third fixing member. The sixth fixing hole of the fixing strip connects one end of the fixing strip to the nacelle, and the third fixing member penetrates the fifth fixing hole of the evaporator and the fourth fixing hole of the fixing strip, Connect the other end of the fixing strip to the evaporator.

7. The air-heating unit with an external evaporator according to any one of claims 1 to 6, wherein the air-heating unit further comprises a compressor, a condenser, a phase-change unit installed in the engine room a heat accumulator and an expansion valve, the compressor is connected to the wind turbine, and the wind turbine drives the compressor to work;

The compressor, the condenser, the phase change heat accumulator, the expansion valve and the evaporator are connected by pipelines to realize thermal cycle;

The compressor is used to compress the gas into high-temperature and high-pressure gas to be transported to the condenser through a pipeline, and the condenser is used to condense the gas and release heat to heat the circulating water outside the coil of the condenser. The gas returns to the evaporator through the expansion valve and is sucked into the compressor after being evaporated. The phase-change heat accumulator is used to store the heat of the circulating water, so as to deliver the high-temperature circulating water to the heat users.

8. A wind energy power system, characterized in that, the wind energy power system comprises a wind turbine and a wind heat unit with an external evaporator according to any one of claims 1 to 7.

9 . The wind energy power system according to claim 8 , wherein the wind turbine is a horizontal axis wind turbine. 10 .