阅读说明：本技术 一种轴透平泵以及温差能发电系统 (Shaft turbine pump and temperature difference energy power generation system ) 是由 周东 邓浩 刁钟洋 陈华露 于 2021-09-08 设计创作，主要内容包括：本发明公开了一种轴透平泵以及温差能发电系统,转化次数少,能力损失小。一种共轴透平泵,包括依次同轴连接的涡轮部套、发电机和泵部套,发电机包括发电机壳、主轴发电机段,以及,设置在主轴发电机段上的发电机转子,设置在发电机壳上的发电机定子；发电机转子与发电机定子配合；涡轮部套包括固定在一起的涡轮进气壳、涡轮排气壳,以及,同轴安装在主轴发电机段上的涡轮拉杆,安装在涡轮拉杆上的涡轮转子,安装在涡轮进气壳、涡轮排气壳上的涡轮静子,安装在涡轮静子气体流入端的涡轮导流罩；涡轮转子与涡轮静子配合。泵部套包括泵壳、主轴泵段,以及,同轴安装在主轴泵段上的泵叶轮。一种温差能发电系统包括蒸发器、冷凝器、轴透平泵。(The invention discloses a shaft turbine pump and a temperature difference energy power generation system, which are low in conversion times and low in capacity loss. A coaxial turbine pump comprises a turbine part sleeve, a generator and a pump part sleeve which are coaxially connected in sequence, wherein the generator comprises a generator shell, a main shaft generator section, a generator rotor arranged on the main shaft generator section and a generator stator arranged on the generator shell; the generator rotor is matched with the generator stator; the turbine part sleeve comprises a turbine air inlet shell, a turbine exhaust shell, a turbine pull rod, a turbine rotor, a turbine stator and a turbine flow guide cover, wherein the turbine air inlet shell and the turbine exhaust shell are fixed together; the turbine rotor cooperates with the turbine stator. The pump section sleeve comprises a pump shell, a main shaft pump section and a pump impeller which is coaxially arranged on the main shaft pump section. A thermoelectric power generation system comprises an evaporator, a condenser and a shaft turbine pump.)

1. A coaxial turbine pump, comprising: comprises a turbine part sleeve, a generator and a pump part sleeve which are coaxially connected in turn,

the generator comprises a generator shell, a main shaft generator section, a generator rotor arranged on the main shaft generator section and a generator stator arranged on the generator shell;

the turbine part sleeve comprises a turbine air inlet shell, a turbine exhaust shell, a turbine pull rod, a turbine rotor, a turbine stator and a turbine flow guide cover, wherein the turbine air inlet shell and the turbine exhaust shell are fixed together;

the pump part sleeve comprises a pump shell, a main shaft pump section and a pump impeller which is coaxially arranged on the main shaft pump section.

2. The coaxial turbine pump of claim 1, wherein: the turbine rotor and the pump impeller are locked by nuts.

3. The coaxial turbine pump of claim 1, wherein: the diameter of turbine pull rod, main shaft pump section all is less than the diameter of main shaft generator section, the both ends of main shaft generator section are supported in the generator housing through magnetic levitation formula journal bearing, magnetic levitation formula thrust bearing, be equipped with the thrust dish on the main shaft generator section, magnetic levitation formula thrust bearing and thrust dish cooperation, the turbine shell of exhausting is fixed on the generator housing, the pump case passes through the pump go-between to be fixed on the generator housing.

4. The coaxial turbine pump of claim 3, wherein: the pump connecting ring is provided with a mechanical seal and an oil seal which are matched with the main shaft pump section, and the pump connecting ring is provided with a partition plate which is matched with the pump impeller.

5. The coaxial turbine pump of claim 3, wherein: and rolling bearings for accident protection are arranged between the main shaft generator section and the generator shell, and are distributed outside the magnetic suspension type radial bearing.

6. The coaxial turbine pump of claim 1, wherein: and the generator shell is provided with radiating fins.

7. A thermoelectric power generation system, comprising:

the evaporator is arranged in the high-temperature area and is used for vaporizing the liquid through a heat source;

the condenser is arranged in the low-temperature area and used for liquefying the steam through a cold source;

the coaxial turbine pump as set forth in any of claims 1 to 6, wherein the inlet end of the turbine unit casing is connected to the outlet end of the evaporator, the outlet end of the turbine unit casing is connected to the inlet end of the condenser, the inlet end of the pump unit casing is connected to the outlet end of the condenser, the outlet end of the pump unit casing is connected to the inlet end of the evaporator to form a cycle, and the generator is used for outputting electric energy to the outside.

8. The thermoelectric power generation system of claim 7, wherein: the evaporator is arranged in a high-temperature water area of the ocean, and the condenser is arranged in a low-temperature water area of the ocean.

9. The thermoelectric power generation system of claim 7, wherein: bypass pipelines are respectively arranged between the inlet end of the turbine part sleeve and the outlet end of the evaporator, and between the outlet end of the pump part sleeve and the inlet end of the evaporator, and the flow is adjusted by adjusting valves.

Technical Field

The invention relates to the technical field of power generation, in particular to a shaft turbine pump and a temperature difference energy power generation system.

Background

In the technical field of ocean thermal energy power generation, the temperature difference between deep seawater and surface seawater is utilized, and power generation is based on an organic Rankine cycle.

The turbo expander and the working medium pump are key equipment of an Organic Rankine Cycle (ORC) system, in a conventional ORC system, a turbine outputs electric energy by driving a generator, a working medium pump motor drives a pump body by consuming electric energy to pump a low-pressure liquid working medium to a high-pressure evaporator, mechanical work generated by the turbine cannot be directly consumed by the pump body of the working medium pump, and the energy conversion process is mechanical energy → electric energy → mechanical energy. Because the energy has inevitable loss in the conversion process, the conversion times of the energy are reduced, the unnecessary energy loss is reduced, and the overall efficiency of the system is improved.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a shaft turbine pump and a temperature difference energy power generation system, which are low in conversion times and low in capacity loss.

The purpose of the invention is realized as follows:

a coaxial turbine pump comprises a turbine part sleeve, a generator and a pump part sleeve which are sequentially and coaxially connected,

the generator comprises a generator shell, a main shaft generator section, a generator rotor arranged on the main shaft generator section and a generator stator arranged on the generator shell; the generator rotor is matched with the generator stator;

the turbine part sleeve comprises a turbine air inlet shell, a turbine exhaust shell, a turbine pull rod, a turbine rotor, a turbine stator and a turbine flow guide cover, wherein the turbine air inlet shell and the turbine exhaust shell are fixed together; the turbine rotor cooperates with the turbine stator.

The pump part sleeve comprises a pump shell, a main shaft pump section and a pump impeller which is coaxially arranged on the main shaft pump section.

Preferably, the turbine rotor and the pump impeller are locked by nuts.

Preferably, the diameters of the turbine pull rod and the spindle pump section are smaller than the diameter of the spindle generator section, two ends of the spindle generator section are supported on the generator shell through magnetic suspension type radial bearings respectively, the turbine exhaust shell is fixed on the generator shell, and the pump shell is fixed on the generator shell through a pump connecting ring. And an integrated shell is formed, and radiating fins are arranged on the generator shell. The pump connecting ring is provided with a mechanical seal and an oil seal which are matched with the main shaft, and the pump connecting ring is provided with a clapboard which is matched with the pump impeller. The main shaft is provided with a thrust disc, and the generator shell is provided with a magnetic suspension type thrust bearing matched with the thrust disc; and rolling bearings for accident protection are arranged between the main shaft and the generator shell and distributed outside the magnetic suspension type radial bearing.

A thermoelectric power generation system, comprising:

the evaporator is arranged in the high-temperature area and is used for vaporizing the liquid through a heat source;

the condenser is arranged in the low-temperature area and used for liquefying the steam through a cold source;

the inlet end of the turbine part sleeve is connected with the outlet end of the evaporator, the outlet end of the turbine part sleeve is connected with the inlet end of the condenser, the inlet end of the pump part sleeve is connected with the outlet end of the condenser, the outlet end of the pump part sleeve is connected with the inlet end of the evaporator to form circulation, and the generator is used for outputting electric energy outwards.

Preferably, the evaporator is disposed in a high-temperature water region of the ocean, and the condenser is disposed in a low-temperature water region of the ocean.

Preferably, bypass pipelines are respectively arranged between the inlet end of the turbine part sleeve and the outlet end of the evaporator, and between the outlet end of the pump part sleeve and the inlet end of the evaporator, and the flow is regulated by regulating valves.

Due to the adoption of the technical scheme, the invention has the following beneficial effects:

1. the structure is compact, the turbine shell, the generator shell, the pump connecting ring and the pump shell are directly connected and fixed, and the turbine rotor, the main shaft and the pump impeller are coaxially connected, so that the space is greatly saved;

2. the power generation efficiency is high, and turbine rotor, generator rotor and pump impeller are coaxial, have reduced the energy conversion process, have improved energy transfer efficiency.

Drawings

FIG. 1 is a schematic view of a coaxial turbine pump;

fig. 2 is a schematic structural view of the thermoelectric power generation system.

Reference numerals

In the attached drawings, 1 is a turbine air inlet shell, 2 is a turbine air inlet guide sleeve, 3 is a turbine stator, 4 is a turbine rotor, 5 is a turbine air outlet shell, 6 is a rolling bearing for accident protection, 7 is a magnetic suspension type radial bearing, 8 is a generator shell, 9 is a radiating fin, 10 is a generator stator, 11 is a generator rotor, 12 is a magnetic suspension type radial bearing, 13 is a pump connecting ring, 14 is a pump shell, 15 is a pump wheel locking nut, 16 is a pump impeller, 17 is a partition plate, 18 is a mechanical seal, 19 is an oil seal, 20 is a main shaft, 21 is a magnetic suspension type thrust bearing, 22 is a thrust disc, 23 is a turbine pull rod, and 24 is a turbine locking nut;

25 is a condenser, 26 is an evaporator and 27 is a coaxial turbine pump.

Detailed Description

As shown in fig. 1, a coaxial turbine pump mainly comprises a turbine portion casing, a generator, and a pump portion casing. The turbine part sleeve and the pump part sleeve are both axial inlets and tangential outlets, a turbine rotor 23, a turbine rotor nut 24, a turbine pull rod 23, a generator rotor 11, a pump impeller 16 and a locking nut 15 are sequentially arranged on a main shaft 20, wherein the turbine rotor nut 24 and the turbine pull rod 23 are used for fixing the turbine rotor 23 and the main shaft 20, the locking nut 15 is used for fixing the pump impeller 16 and the main shaft 20, the turbine applies work and then transmits power to the generator and the pump through the main shaft 20 to drive the high-speed generator rotor 11 and the pump impeller 16 to rotate, part of mechanical energy generated by the turbine applying work is converted into electric energy by the generator and then is output outwards, and part of mechanical energy is converted into pressure energy of pumped fluid after being consumed by the pump impeller 16.

Fluid film bearings may be used in place of the magnetic levitation type radial bearings and magnetic levitation type thrust bearings, in the alternative, the schematic depiction of the magnetic levitation type radial bearings 7 and magnetic levitation type thrust bearings 21 in the figures should be considered to include fluid film bearings. When a fluid film bearing is used in place of the magnetic levitation type radial bearing 7 and the magnetic levitation type thrust bearing 21, the accident protection rolling bearing 6 is not generally required.

In an ocean temperature difference energy power generation system (shown in figure 2), gaseous working media from an evaporator 26 enter a turbine end of a coaxial turbine pump 27 to do work, then enter a system condenser 25 through an exhaust shell to be condensed into liquid, the liquid working media are pumped to the evaporator through a pump end of the coaxial turbine pump 27 and are heated into gaseous state in the evaporator 26, and therefore the system completes circulation. Most of the work done by the turbine end is converted into electric energy through the generator and is output to the outside of the system, and the other part of the work done by the turbine end is consumed by the pump. In the process, the energy consumed by the pump is directly from the turbine end.

Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the invention as defined by the appended claims.