CN209905008U - Heat pipe floating platform - Google Patents

Abstract

The utility model discloses a heat pipe floating platform, heat pipe floating platform includes: buoyancy platform and heat pipe pile, the heat pipe pile includes: the outer shell is fixed on the buoyancy platform, a reaction cavity, a heating cavity and a separation cavity are arranged in the outer shell, the bottom of the separation cavity is communicated with the bottom of the heating cavity, and the reaction cavity is positioned below the heating cavity and mainly composed of dispersed fuel; a heat pipe, a part of which is positioned in the reaction cavity, and the rest of which is positioned in the heating cavity and is used for generating water vapor in the heating cavity; and the steam-water separator is arranged above the heating cavity, is communicated with the separation cavity and is used for separating liquid water in the steam in the heating cavity. And the thermoelectric conversion device is connected with the heat pipe stack and is used for converting the heat energy of the water vapor into electric energy and condensing the water vapor into liquid water to be conveyed back to the heating cavity. The utility model discloses it is complicated to have solved the heat transfer mode that floating platform adopted effectively, needs in the fuel heap installation water circuit pipeline, the problem of the big and security of water circuit pipeline flow resistance.

Description

Heat pipe floating platform

Technical Field

The utility model relates to a boats and ships field, concretely relates to heat pipe floating platform.

Background

Offshore equipment such as offshore oil drilling platforms in China have great requirements on electric energy, and floating platforms for supplying electric energy to the drilling platforms appear in order to solve the contradiction between the increasing industrial power demand and the difficulty in supplying power far away from land.

The floating platform is a small-sized movable nuclear power station on the sea, is a product organically combined with ship engineering and nuclear power engineering, and can provide electric energy for an oil drilling platform and coastal electric facilities.

At present, a floating platform on the sea mostly adopts double-loop arrangement, a water loop pipeline is required to be arranged in a fuel reactor, and the water loop pipeline can generate great flow resistance to reduce the natural circulation capacity of the reactor; in addition, the water loop pipeline has the risk of shearing and breaking, and the reactor core melting caused by the break loss of coolant accident is easy to generate.

SUMMERY OF THE UTILITY MODEL

To the defect that exists among the prior art, the utility model aims to provide a can solve marine heap occupation space big effectively, problem that the chance of taking place the accident is high.

In order to achieve the above purpose, the utility model adopts the technical proposal that:

a heat pipe floating platform, comprising:

a buoyant platform;

a stack of heat pipes, comprising,

-an outer casing fixed on the buoyancy platform, wherein a reaction chamber, a heating chamber and a separation chamber are arranged in the outer casing, the bottom of the separation chamber is communicated with the bottom of the heating chamber, and the reaction chamber is positioned below the separation chamber;

-a heat pipe, a part of which is located in the reaction chamber and the remaining part of which is located in the heating chamber, for generating water vapor from water in the heating chamber;

-a steam-water separator provided above and in communication with said heating chamber for separating liquid water from water vapour in said heating chamber;

-a thermoelectric conversion device connected to the heat pipe stack for converting thermal energy of the water vapor into electrical energy and condensing the water vapor into liquid water for delivery back to the heating chamber.

In addition to the above-described technical means, the thermoelectric conversion device includes,

-a generator;

-a turbine driving the generator, which is in communication with the separation chamber;

-a condenser in communication with an outlet of the steam turbine for condensing the water vapor into liquid water;

-a feed water pump in communication with the heating chamber for delivering condensed liquid water back to the heating chamber.

On the basis of the technical scheme, the heat pipe floating platform further comprises a dryer, wherein the dryer is arranged in the separation cavity and is positioned above the steam-water separator.

On the basis of the technical scheme, the distance between the steam-water separator and the dryer is 0.5 m.

On the basis of the technical scheme, a control drum for adjusting the fuel reactivity is arranged outside the reaction cavity.

On the basis of the technical scheme, a multilayer shield is arranged between the reaction cavity and the outer shell between the reaction cavity and the separation cavity.

On the basis of the technical scheme, the steam-water separator is a rotary vane type steam-water separator.

On the basis of the technical scheme, the dryer is a corrugated dryer.

Compared with the prior art, the utility model has the advantages of: in use, the outer hull is secured to the buoyant platform. The reaction chamber is filled with fuel and the heating chamber is filled with water. The fuel reaction generates heat which is transferred to a part of heat pipes positioned in the reaction cavity, the rest of heat pipes positioned in the heating cavity are water in the heating cavity, water vapor is generated after the water in the reaction cavity is heated, the water vapor is separated out of partial liquid water through a vapor-water separator, the kinetic energy of the water vapor is converted into electric energy through a thermoelectric conversion device, and the thermoelectric conversion device condenses the liquid water in the water vapor and conveys the condensed water back to the heating cavity. The heat pipe is used for transferring heat, so that a water loop pipeline arranged in the fuel reactor can be eliminated, the flow resistance is reduced, and the natural circulation capacity of the reactor is improved; therefore, the problem that the water loop pipeline has the risk of shearing fracture is solved, and the reactor core melting caused by the large-break water loss accident is avoided.

Drawings

Fig. 1 is a schematic structural diagram of a heat pipe floating platform according to an embodiment of the present invention;

fig. 2 is a schematic layout diagram of a control drum in an embodiment of the present invention.

In the figure: 1. a buoyant platform; 2. a heat pipe stack; 21. an outer housing; 211. a reaction chamber; 212. A separation chamber; 2121. a drying chamber; 2122. a gravity separation chamber; 213. a heating cavity; 22. a fuel; 23. a steam-water separator; 24. a heat pipe; 25. a dryer; 26. a control drum; 27. multilayer shielding; 3. a thermoelectric conversion device; 31. a generator; 32. a steam turbine; 33. a feed pump; 34. a condenser.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Referring to fig. 1, an embodiment of the present invention provides a schematic structural diagram of a heat pipe floating platform. A heat pipe floating platform, comprising:

a buoyant platform 1;

the stack of heat pipes 2, which comprises,

an outer casing 21 fixed to the buoyant platform 1, the outer casing 21 having a reaction chamber 211, a separation chamber 212 and a heating chamber 213 disposed therein, the bottom of the separation chamber 212 communicating with the bottom of the heating chamber 213, the reaction chamber 211 being used for the reaction of the fuel 22, the reaction chamber 211 being disposed below the separation chamber 212,

a heat pipe 24, a portion of which is located in the reaction chamber 211 and the remaining portion of which is located in the heating chamber 213, for generating water vapor from water in the heating chamber 213,

a steam-water separator 23, which is arranged above the heating chamber 213 and communicates with the heating chamber 213, for separating liquid water from the water vapor in the heating chamber 213;

and a thermoelectric conversion device 3 connected to the heat pipe stack 2, for converting thermal energy of the water vapor into electric energy, and condensing liquid water in the water vapor and transferring the condensed water back to the heating chamber 213.

In use, the outer hull 21 is secured to the buoyant platform 1. The reaction chamber 211 is filled with the fuel 22 and the heating chamber 213 is filled with water. The heat generated by the reaction of the fuel 22 is transferred to a part of the heat pipes 24 located in the reaction cavity 211, the remaining part of the heat pipes 24 located in the heating cavity 213 is the water in the heating cavity 213, the water in the reaction cavity 211 is heated to generate water vapor, the water vapor is separated by the steam-water separator 23 to obtain a part of liquid water, the kinetic energy of the water vapor is converted into electric energy by the thermoelectric conversion device 3, and the liquid water in the water vapor is condensed by the thermoelectric conversion device 3 and is conveyed back to the heating cavity 213. The heat pipe 24 is used for transferring heat, so that a water loop pipeline arranged in the fuel reactor can be eliminated, the flow resistance is reduced, and the natural circulation capacity of the reactor is improved; therefore, the problem that the water loop pipeline has the risk of shearing fracture is solved, and the reactor core melting caused by the large-break water loss accident is avoided.

The heat pipe is composed of a pipe shell, a liquid absorption core and an end cover, wherein one end of the heat pipe is an evaporation section (heating section), the other end of the heat pipe is a condensation section (cooling section), and a heat insulation section can be arranged between the two sections according to application requirements. Heat is transferred from a heat source to a (liquid-vapor) interface through the wall of the heat pipe and a wick filled with working liquid; (2) the liquid evaporates at a (liquid-vapor) interface within the evaporation section; (3) the steam in the steam cavity flows from the evaporation section to the condensation section; (4) the vapor condenses at the vapor-liquid interface in the condensation section: (5) heat is transferred from the (vapor-liquid) interface through the wick, liquid and tube wall to the heat sink: (6) the condensed working fluid is returned to the evaporator end by capillary action in the wick. In the evaporation section of the heating heat pipe, the working liquid in the pipe core is evaporated better than the heating of fuel and takes away heat which is the evaporation latent heat of the working liquid, and steam flows to the condensation section of the heat pipe from the central channel and is condensed into liquid and releases latent heat at the same time, and the liquid flows back to the evaporation section under the action of capillary force.

In the present embodiment, the fuel 22 is a dispersed nuclear fuel. The evaporator end of the heat pipe 24 is placed in the fuel 22 to be heated. The heat pipe 24 is reinserted into the fuel 22 by welding a layer of metallic rhenium and is heated.

Preferably, the thermoelectric conversion device 3, which includes,

-a generator 31 for generating a current,

a turbine 32 driving a generator 31, communicating with the separation chamber 212,

a condenser 34 communicating with the outlet of the turbine 32 for condensing the water vapour into liquid water,

a feed water pump 33 in communication with the heating chamber 213 for delivering condensed liquid water back to the heating chamber 213.

In this embodiment, the inlet of the turbine 32 is connected to the separation chamber 212, and after drying, the high-temperature and high-pressure steam is converted into high-speed steam flow, and the steam flow is converted into mechanical energy by the rotation energy of the heat energy to drive the turbine 32 to operate. The turbine 32 operates to drive the generator 31 to generate electricity, the mechanical energy is converted into electric energy, and the generator 31 generates electricity to drive other equipment of the floating platform to operate. The outlet of the turbine 32 communicates with the condenser 34, condenses the water vapor, and feeds it back into the heating chamber 213 by the feed pump 33, where it continues to be heated and evaporated to transfer energy.

Preferably, the heat pipe floating platform further comprises a dryer 25 disposed in the separation chamber 212 above the steam separator 23. The dryer 25 is used to remove a portion of the liquid water from the steam to reduce erosion of the blades of the turbine 32 by the liquid water.

In this embodiment, the dryer 25 separates the separation chamber 212 into a drying chamber 2121 and a gravity separation chamber 2122. The thermoelectric conversion device 3 communicates with the drying chamber 2121, and the dried water vapor drives the thermoelectric conversion device 3 to convert electric energy.

Preferably, the interval between the steam separator 23 and the dryer 25 is 0.5 m. The distance between the steam-water separator 23 and the dryer 25 is set to be 0.5m, so that the steam can be separated from a part of liquid water by means of the gravity of the steam-water separator, and the separated liquid water falls back to the bottom of the separation cavity 212, so that the content of the liquid water in the steam is reduced. In the present embodiment, the bottom of the separation chamber 212 is communicated with the bottom of the heating chamber 213, and the fallen liquid water will continue to be heated and evaporated.

Fig. 2 is a schematic diagram of the arrangement of the control drum, and as shown in fig. 2, further, the control drum 26 for adjusting the reactivity of the fuel 22 is provided outside the reaction chamber 211. The control drum is made of beryllium material with the highest neutron reflection capability and is in a cylinder shape, and the surface of the cylinder along the radial direction of 120 degrees is covered with B₄The C neutron absorption material can adjust the output thermal power of the reactor by rotating the direction of the control drum.

Further, a multi-layer shield 27 is provided between the reaction chamber 211 and the outer housing 21 between the reaction chamber 211 and the separation chamber 212. The multi-layer shielding is arranged, and the multi-layer shielding is used for surrounding the reactor with lead with a certain thickness and used for blocking or weakening a large amount of neutrons and gamma rays emitted by the reactor. The function of which is to reduce the neutron and gamma radiation leaking out of the core and through the reactor cavity to acceptable levels, which are accessible to the operating personnel.

Further, the steam-water separator 23 is a rotary vane type steam-water separator. The rotary vane type steam-water separator can separate liquid water in the steam through the centrifugal force of the rotary vane, and the liquid water flows to the heating cavity 213 along the inner wall of the rotary vane type steam-water separator to be continuously heated and evaporated.

Further, the dryer 25 is a corrugation dryer. The corrugated drier can better remove liquid water in water vapor.

The present invention is not limited to the above embodiments, and for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered to be within the protection scope of the present invention. Those not described in detail in this specification are within the skill of the art.

Claims (8)

1. A heat pipe floating platform, comprising:

a buoyant platform (1);

a stack of heat pipes (2) comprising,

-an outer casing (21) fixed to the buoyant platform (1), a reaction chamber (211), a separation chamber (212) and a heating chamber (213) being arranged inside the outer casing (21), the bottom of the separation chamber (212) and the bottom of the heating chamber (213) being in communication, the reaction chamber (211) being located below the separation chamber (212),

-a heat pipe (24) having a portion located within said reaction chamber (211) and a remaining portion located within said heating chamber (213) for generating water vapour from water within said heating chamber (213),

-a steam-water separator (23) provided above said heating chamber (213) and communicating with said heating chamber (213) for separating liquid water from water vapour in said heating chamber (213);

and the thermoelectric conversion device (3) is connected with the heat pipe stack (2) and is used for converting the heat energy of the water vapor into electric energy and condensing the water vapor into liquid water to be conveyed back to the heating cavity (213).

2. A heat pipe floating platform as defined in claim 1, wherein: the thermoelectric conversion device (3) includes:

-a generator (31);

-a steam turbine (32) driving the generator (31), communicating with the separation chamber (212);

-a condenser (34) in communication with an outlet of the steam turbine (32) for condensing the water vapour into liquid water;

-a water feed pump (33) in communication with the heating chamber (213) for delivering condensed liquid water back to the heating chamber (213).

3. A heat pipe floating platform as defined in claim 1, wherein: the heat pipe floating platform further comprises a dryer (25) which is arranged in the separation cavity (212) and located above the steam-water separator (23).

4. A heat pipe floating platform as claimed in claim 3, wherein: the distance between the steam-water separator (23) and the dryer (25) is 0.5 m.

5. A heat pipe floating platform as defined in claim 1, wherein: and a control drum (26) for adjusting the reactivity of the fuel (22) is arranged outside the reaction cavity (211).

6. A heat pipe floating platform as defined in claim 1, wherein: a multilayer shield (27) is arranged between the reaction chamber (211) and the separation chamber (212) and between the reaction chamber (211) and the outer shell (21).

7. A heat pipe floating platform as defined in claim 1, wherein: the steam-water separator (23) is a rotary vane type steam-water separator.

8. A heat pipe floating platform as claimed in claim 3, wherein: the dryer (25) is a corrugated dryer.

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