阅读说明：本技术 一种涡轮机燃气喷水冷却装置 (Turbine gas water spray cooling device ) 是由 秦侃 王瀚伟 罗凯 黄闯 李代金 党建军 于 2021-08-06 设计创作，主要内容包括：本发明公开了一种涡轮机燃气喷水冷却装置,包括外壳体,外壳体内同轴套接内壳体,外壳体与内壳体之间形成冷却腔,外壳体上开设多个液态水入口,液态水入口与冷却腔相通,内壳体中部开设多个射流孔,外壳体端部连接端盖,端盖上正对内壳体内腔体开设通孔,端盖通孔位置连接连通管一端,连通管的另一端连接喷管盒,喷管盒上连接喷管一端；通过液态水喷入高温燃气中发生相变,相变过程可吸收大量潜热变为水蒸气从而降低高温燃气的温度,防止高温燃气进入涡轮室使涡轮盘温度超过许用温度,保障涡轮机安全运行；提高涡轮机的输出功率和效率。(The invention discloses a turbine gas water-spraying cooling device, which comprises an outer shell, wherein an inner shell is coaxially sleeved in the outer shell, a cooling cavity is formed between the outer shell and the inner shell, a plurality of liquid water inlets are formed in the outer shell and communicated with the cooling cavity, a plurality of jet holes are formed in the middle of the inner shell, the end part of the outer shell is connected with an end cover, a through hole is formed in the end cover, the end cover is opposite to the inner cavity of the inner shell, the through hole of the end cover is connected with one end of a communicating pipe, the other end of the communicating pipe is connected with a jet pipe box, and the jet pipe box is connected with one end of a jet pipe; the liquid water is sprayed into the high-temperature fuel gas to generate phase change, a large amount of latent heat can be absorbed in the phase change process and changed into water vapor, so that the temperature of the high-temperature fuel gas is reduced, the high-temperature fuel gas is prevented from entering a turbine chamber, the temperature of a turbine disc exceeds the allowable temperature, and the safe operation of a turbine is guaranteed; the output power and efficiency of the turbine are improved.)

1. The utility model provides a turbine gas water spray cooling device, its characterized in that, includes shell body (1), coaxial cup joint interior casing (2) in shell body (1), form cooling chamber (9) between shell body (1) and interior casing (2), set up a plurality of liquid water entry (6) on shell body (1), liquid water entry (6) communicate with each other with cooling chamber (9), a plurality of jet holes (3) are seted up at interior casing (2) middle part, shell body (1) end connection end cover (4), just set up the through-hole to the cavity in interior casing (2) on end cover (4), communicating pipe (7) one end is connected to end cover (4) through-hole position, nozzle box (8) are connected to the other end of communicating pipe (7), connect spray tube (5) one end on nozzle box (8).

2. A turbine gas water jet cooling device according to claim 1, characterized in that a plurality of said jet holes (3) are provided on the same circumference of the inner casing (2), and a plurality of said jet holes (3) are arranged at equal angles.

3. A turbine gas water jet cooling device according to claim 2, characterized in that the central angle of two adjacent jet holes (3) in the inner casing (2) is 30 °.

4. A turbine gas water injection cooling device according to claim 1, characterised in that there are two of said liquid water inlets (6) and that the central angle of both said liquid water inlets (6) is 60 ° on the same circumference of the outer casing (1).

5. A turbine gas water spray cooling device according to claim 1, characterized in that the other end of the nozzle (5) is connected to the turbine and the port is opposite to the turbine blade.

Technical Field

The invention belongs to the technical field of gas turbine cooling equipment, and particularly relates to a turbine gas water spray cooling device.

Background

Under the requirements of high speed and range of the underwater vehicle, the turbine needs to have higher output power and efficiency, the working temperature of the turbine needs to be further increased for improving the efficiency of the turbine, the working temperature is over 1000K, the material exceeds the stress limit under high temperature, high pressure and high rotating speed, and the development of an efficient cooling method suitable for the underwater vehicle can ensure the operation safety of the turbine and increase the output power and efficiency of the turbine at the same time.

Traditional turbine cooling is mostly air cooling, generally for mixing into more air with the gas before the spray tube of entering and cool off, or directly carry out impingement cooling to the rim plate, some drill holes in order to realize the air film cooling at the blade. However, for the application environment of the underwater vehicle, liquid water is around the underwater vehicle, so that the entry of cooling air is difficult to ensure, and the cooling by using the liquid water is the most feasible scheme.

Disclosure of Invention

The invention aims to provide a turbine gas water spray cooling device, which is used for cooling a turbine by mixing external liquid water of an underwater vehicle with high-temperature gas, further improving the temperature of gas at the inlet of the turbine under the condition of ensuring safe operation, and simultaneously improving the power and the efficiency of the turbine.

The technical scheme adopted by the invention is that the turbine gas water-spraying cooling device comprises an outer shell, wherein an inner shell is coaxially sleeved in the outer shell, a cooling cavity is formed between the outer shell and the inner shell, a plurality of liquid water inlets are formed in the outer shell and communicated with the cooling cavity, a plurality of jet holes are formed in the middle of the inner shell, the end part of the outer shell is connected with an end cover, a through hole is formed in the end cover, which is opposite to the inner cavity of the inner shell, the through hole of the end cover is connected with one end of a communicating pipe, the other end of the communicating pipe is connected with a jet pipe box, and one end of a jet pipe is connected to the jet pipe box.

The invention is also characterized in that:

the plurality of jet holes are arranged on the same circumference of the inner shell, and the plurality of jet holes are arranged at equal angles.

The central angle of two adjacent jet holes in the inner shell is 30 degrees.

The liquid water inlets are two in number, and on the same circumference of the outer shell, the central angles of the two liquid water inlets are 60 degrees.

The other end of the nozzle is connected with the turbine, and the port is opposite to the turbine blade.

The invention has the beneficial effects that:

in the cooling device, liquid water is sprayed into high-temperature gas to generate phase change, and a large amount of latent heat can be absorbed and changed into water vapor in the phase change process, so that the temperature of the high-temperature gas is reduced, the high-temperature gas is prevented from entering a turbine chamber to enable the temperature of a turbine disc to exceed the allowable temperature, and the safe operation of a turbine is guaranteed; the speed ratio can be improved by reducing the temperature, the flow of the working medium can be further improved by the steam, the partial air inlet degree is increased, the efficiency of the turbine is improved, and finally the mixed gas is discharged from the spray pipe and enters the turbine chamber to push the turbine to do work; the cooling device of the invention can improve the output power and efficiency of the turbine on the premise of ensuring the safe work of the turbine.

Drawings

FIG. 1 is a perspective view of a turbine gas water spray cooling apparatus of the present invention;

FIG. 2 is a rear view of a turbine gas water spray cooling apparatus of the present invention;

FIG. 3 is a schematic structural view of an inner casing of a turbine gas water spray cooling device according to the present invention;

FIG. 4 is a longitudinal cross-sectional polished view of a turbine gas water spray cooling apparatus of the present invention;

FIG. 5 is a cross-sectional polished view of a turbine gas water spray cooling apparatus of the present invention.

In the figure, 1, an outer shell, 2, an inner shell, 3, a jet hole, 4, an end cover, 5, a spray pipe, 6, a liquid water inlet, 7, a communicating pipe, 8, a spray pipe box, 9, a cooling cavity, 10, a mixing area, 11, a high-temperature gas cavity and 12, a high-temperature gas port are arranged.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

The invention relates to a turbine gas water spray cooling device, as shown in figure 1, which comprises an outer shell 1, an inner shell 2 is coaxially sleeved in the outer shell 1, a cooling cavity 9 is formed between the outer shell 1 and the inner shell 2, a plurality of liquid water inlets 6 are arranged on the outer shell 1, the liquid water inlets 6 are communicated with the cooling cavity 9, a plurality of jet holes 3 are arranged in the middle of the inner shell 2, seawater enters the cooling cavity 9 through the liquid water inlets 6 and then enters a high-temperature gas cavity 11 in the inner shell 2 through the jet holes 3, the end part of the outer shell 1 is connected with an end cover 4, a through hole is arranged on the end cover 4, which is opposite to the cavity in the inner shell 2, the through hole of the end cover 4 is connected with one end of a communicating pipe 7, the other end of the communicating pipe 7 is connected with a jet pipe box 8, one end of a jet pipe 5 is connected on the jet pipe box 8, one end of the inner shell 2, which is far away from the end cover 4 is a high-temperature gas port 12, and high-temperature gas is introduced into the inner shell 2 through the high-temperature gas port 12, seawater enters a mixing area 10 formed in the communicating pipe 7 together with high-temperature gas through the high-temperature gas cavity 11, the seawater is changed into high-temperature steam in the mixing area 10, a large amount of latent heat can be absorbed in the phase change process, so that the temperature of the high-temperature gas is reduced, in addition, the flow of a working medium can be further improved through the steam, finally, the high-temperature steam and the gas enter the spraying pipe box 8 and the spraying pipe 5 together through the through hole, and the spraying pipe 5 is used for accelerating the high-temperature gas and the steam after mixing and then discharging the high-temperature gas and the steam into a turbine blade to do work.

On the same circumference of casing 2 including a plurality of jet orifices 3, and a plurality of jet orifices 3 wait the angle setting, can realize the interior cavity equilibrium cooling of high temperature gas chamber 11.

The central angle of two adjacent jet holes 3 in the inner shell 2 is 30 degrees, if the jet orifices are too many, the wall strength can be reduced if the two jet orifices are too close to each other, and the cooling effect is difficult to ensure if the jet orifices are too few.

The liquid water inlets 6 are two, the central angles of the two liquid water inlets 6 are 60 degrees on the same circumference of the outer shell 1, seawater can be conveniently introduced into the cooling cavity 9, and the size of the whole turbine can be reduced.

The other end of the nozzle 5 is connected with the turbine, and the port faces the turbine blade.

A temperature sensor and a pressure sensor can be connected between the end cover 4 and the communicating pipe 7 to measure the pressure and the temperature of fuel gas introduced into the nozzle box, and the central angle of the two reserved sensor positions in the spatial arrangement is 60 degrees, so that the sensors can be contacted with each other if the central angle is too close, and the sensors can be easily contacted with other parts if the central angle is too far, and the sensors can interfere with the work of the sensors.

The working principle of the turbine gas water spray cooling device is as follows:

when the marine aircraft works, the turbine drives the seawater pump to introduce liquid water outside the aircraft into the aircraft, the seawater pump is connected to the liquid water inlet 6 through a pipeline, the liquid water is filled in the cooling cavity 9 and discharged from the jet hole 3, the liquid water and high-temperature gas entering from the high-temperature gas inlet are mixed in the mixing area 10, the liquid water is evaporated into water vapor, and mixed gas after being fully mixed enters the spray pipe 5 to be depressurized and accelerated and then enters the turbine chamber to push the turbine to do work.

Through the mode, the turbine gas water-spraying cooling device provided by the invention has the advantages that liquid water is sprayed into high-temperature gas to generate phase change, and a large amount of latent heat can be absorbed in the phase change process and changed into water vapor, so that the temperature of the high-temperature gas is reduced, the high-temperature gas is prevented from entering a turbine chamber, the temperature of a turbine disc exceeds the allowable temperature, and the safe operation of a turbine is guaranteed; the speed ratio can be improved by reducing the temperature, the flow of the working medium can be further improved by the steam, the partial air inlet degree is increased, the efficiency of the turbine is improved, and finally the mixed gas is discharged from the spray pipe and enters the turbine chamber to push the turbine to do work; the cooling device of the invention can improve the output power and efficiency of the turbine on the premise of ensuring the safe work of the turbine.