阅读说明：本技术 一种适用于燃烧室的开闭装置 (Opening and closing device suitable for combustion chamber ) 是由 顾洪斌 孟东东 高占彪 张新宇 林建民 钱大兴 于 2020-04-22 设计创作，主要内容包括：本发明实施例涉及一种适用于高温高压气体的开闭装置,包括：旋转角轮和水冷转动轴；所述旋转角轮设置于所述燃烧室的气流通道内,所述旋转角轮通过所述水冷转动轴与伺服电机连接,由所述伺服电机控制所述水冷转动轴带动所述旋转角轮在所述气流通道内运动,以达到所述气流通道的开闭。本申请技术方案采用旋转密封结构,具有高压自密封的特点,另外旋转部件两侧通过滑动密封设计实现运动结构的密封与运动的双实现,高效水冷结构的设计可以使装置最高工作在2000K以下温度,承压20MPa。解决了高温高压气体的开启与关闭问题。(The embodiment of the invention relates to an opening and closing device suitable for high-temperature and high-pressure gas, which comprises: a rotating angle wheel and a water-cooling rotating shaft; rotatory horn ring set up in the airflow channel of combustion chamber, rotatory horn ring passes through the water-cooling axis of rotation is connected with servo motor, by servo motor control the water-cooling axis of rotation drives rotatory horn ring is in airflow channel internal motion, in order to reach airflow channel's switching. This application technical scheme adopts rotary seal structure, has the characteristics of high pressure self sealss, and rotary part both sides realize the sealed of motion structure and the two realization of motion through the sliding seal design in addition, and the design of high-efficient water-cooling structure can make the highest temperature of working below 2000K of device, and the pressure-bearing 20 MPa. The opening and closing problems of high-temperature and high-pressure gas are solved.)

1. An opening and closing device for a combustion chamber, comprising: a rotating angle wheel and a water-cooling rotating shaft;

rotatory horn ring set up in the airflow channel of combustion chamber, rotatory horn ring passes through the water-cooling axis of rotation is connected with servo motor, by servo motor control the water-cooling axis of rotation drives rotatory horn ring is in airflow channel internal motion, in order to reach airflow channel's switching.

2. The device as claimed in claim 1, wherein the water-cooled rotating shaft is provided with a key slot, the key slot is connected with the coupling through a flat key and further connected with the output shaft of the speed reducer of the actuating mechanism of the valve, and the rotation of the rotating angle wheel is realized by controlling the rotation of the speed reducer of the actuating mechanism through a high-precision servo motor.

3. The apparatus of claim 1, wherein the rotation angle wheel comprises: a first sealing surface and a second sealing surface;

a first sealing groove is formed at the joint of one end of the first sealing surface and one end of the second sealing surface and is used for being matched with a groove on the upper wall surface of the airflow channel to form a sealing structure on the upper wall surface;

and the other end of the second sealing surface is provided with a second sealing groove, and a sealing structure is formed on the lower wall surface by matching the second sealing groove with the lower wall surface of the airflow channel.

4. A device according to claim 3, wherein the first sealing surface has a rectangular configuration in cross-section and the second sealing surface has an arcuate configuration in cross-section.

5. The apparatus of claim 3, wherein the first sealing surface is provided with a plurality of first cooling holes through which the air flow in the air flow channel is heat exchanged when the air flow channel is in the flow-through state.

6. The apparatus of claim 3, wherein the second sealing surface is provided with a plurality of second cooling holes, and wherein the first cooling holes exchange heat with the air flow in the air flow channel when the air flow channel is in the closed state.

7. The device of claim 3, wherein a sleeve adapted to the water-cooling rotating shaft is further disposed on the rotating angle wheel, and a plurality of third cooling holes are disposed on the sleeve and used for exchanging heat with the airflow in the airflow channel when the airflow channel is in a circulating state.

Technical Field

The embodiment of the invention relates to a switching device, in particular to a switching device suitable for a combustion chamber.

Background

The equipment for simulating high-altitude and high-speed environment on the ground by free jet and the like has the characteristics of high enthalpy, high speed, high pressure and long-term use, and generally needs to heat air and pressurize to a certain pressure in the high-speed environment simulated on the ground. The difficulty of the method is that the pressure exceeds 20MPa, the temperature reaches 2000K, and the opening and closing of high-temperature gas need to be controlled. At present, the highest working temperature of the existing domestic product can not exceed 1200K, and valves with parameters of more than 1600K exist in foreign America, but belong to forbidden products.

Disclosure of Invention

In order to solve the technical problem mentioned above or at least partially solve the technical problem mentioned above, an embodiment of the present application provides an opening and closing device suitable for a combustion chamber, including: a rotating angle wheel and a water-cooling rotating shaft;

rotatory horn ring set up in the airflow channel of combustion chamber, rotatory horn ring passes through the water-cooling axis of rotation is connected with servo motor, by servo motor control the water-cooling axis of rotation drives rotatory horn ring is in airflow channel internal motion, in order to reach airflow channel's switching.

In one possible embodiment, the water-cooled rotating shaft is provided with a key groove, the key groove is connected with the coupling through a flat key and further connected with a reducer output shaft of an actuating mechanism of the valve, and the rotation of the rotating angle wheel is realized by controlling the rotation of the reducer of the actuating mechanism through a high-precision servo motor.

In one possible embodiment, the rotation angle wheel comprises: a first sealing surface and a second sealing surface;

a first sealing groove is formed at the joint of one end of the first sealing surface and one end of the second sealing surface and is used for being matched with a groove on the upper wall surface of the airflow channel to form a sealing structure on the upper wall surface;

and the other end of the second sealing surface is provided with a second sealing groove, and a sealing structure is formed on the lower wall surface by matching the second sealing groove with the lower wall surface of the airflow channel.

In one possible embodiment, the cross section of the first sealing surface has a rectangular configuration and the cross section of the second sealing surface has an arcuate configuration.

In one possible embodiment, the first sealing surface is provided with a plurality of first cooling holes, and the first cooling holes exchange heat with the air flow in the air flow channel when the air flow channel is in a flow state.

In one possible embodiment, the second sealing surface is provided with a plurality of second cooling holes, and the first cooling holes exchange heat with the air flow in the air flow channel when the air flow channel is in a closed state.

In a possible embodiment, a sleeve matched with the water-cooling rotating shaft is further arranged on the rotating angle wheel, a plurality of third cooling holes are formed in the sleeve, and the third cooling holes are used for exchanging heat for air flow in the air flow channel when the air flow channel is in a circulating state.

The opening and closing device suitable for high-temperature and high-pressure airflow provided by the embodiment of the invention adopts a rotary sealing structure, has the characteristic of high-pressure self-sealing, in addition, the sealing and movement of the movement structure are realized through the sliding sealing design on two sides of a rotating part, and the design of an efficient water cooling structure can ensure that the device can work at the maximum temperature of below 2000K and bear the pressure of 20 MPa. The opening and closing problems of high-temperature and high-pressure gas are solved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is a schematic view of an opening and closing device suitable for high-temperature and high-pressure gas according to an embodiment of the present disclosure;

fig. 2 is a side view of an opening and closing device for high-temperature and high-pressure gas according to an embodiment of the present disclosure;

fig. 3 is a schematic view of an opening and closing device suitable for high-temperature and high-pressure gas according to an embodiment of the present disclosure in a closed state;

fig. 4 is a schematic view of an opening and closing device suitable for high-temperature and high-pressure gas according to an embodiment of the present disclosure in an open state.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, technical methods 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 any creative effort, shall fall within the scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, back, etc.) are involved in the embodiment of the present invention, the directional indications are only used for explaining the relative positional relationship between the components in a certain posture, the motion situation, etc., and if the certain posture is changed, the directional indications are changed accordingly.

Fig. 1 is a schematic view of an opening and closing device suitable for high-temperature and high-pressure gas according to an embodiment of the present application, and as shown in fig. 1, the device includes: a rotating angle wheel 1 and a water-cooling rotating shaft 2; the rotary horn gear 1 in this embodiment adopts a rotary structure in order to reduce the mechanism volume (see fig. 2).

The rotating angle wheel 1 in this embodiment is arranged in a high-temperature high-pressure air flow channel, the rotating angle wheel 1 is connected with a servo motor through a water-cooling rotating shaft 2, and the water-cooling rotating shaft is controlled by the servo motor to drive the rotating angle wheel 1 to move in the air flow channel so as to open and close the air flow channel.

The water-cooling rotating shaft 2 in this embodiment is provided with a key groove, and is connected with the coupling through a flat key, and further connected with the output shaft of the speed reducer of the actuating mechanism of the valve, and the rotation of the rotating angle wheel 1 is realized by controlling the rotation of the speed reducer of the actuating mechanism through a high-precision servo motor.

The rotation angle wheel 1 in this embodiment includes: a first sealing surface 3 and a second sealing surface 4; wherein the cross-section of the first sealing surface 3 is of a rectangular configuration. The cross section of the second sealing surface is of an arc-shaped structure.

Fig. 3 is a schematic view of the opening and closing device suitable for high-temperature and high-pressure gas provided in this embodiment in a closed state, as shown in fig. 3, a first seal groove 5 is provided at a joint of one end of the first seal surface 3 and the second seal surface 4, the first seal groove 5 is used for being matched with a groove located on an upper wall surface of the gas flow channel to form a seal structure on the upper wall surface, a plurality of first cooling holes 31 are provided on the first seal surface 3, and the first cooling holes can exchange heat with gas flow in the gas flow channel when the gas flow channel is in a circulating state. Wherein, the first sealing surface in the rotary angle wheel is provided with 12 groups of cooling holes with the diameter of 5 mm;

fig. 4 is a schematic view of an opening/closing device suitable for high-temperature and high-pressure gas provided in an embodiment of the present application, as shown in fig. 4, a second sealing groove 6 is provided at the other end of the second sealing surface 4, and the second sealing groove 6 is matched with a lower wall surface of the gas flow channel to form a sealing structure on the lower wall surface; the second sealing surface 4 is provided with a plurality of second cooling holes 41 through which the air flow in the air flow passage is heat-exchanged when the air flow passage is in a closed state. The second cooling holes 41 can take away a large amount of heat transferred to the horn ring mechanism body by high-temperature and high-pressure air flow, so that the rotary horn ring can keep enough strength. Wherein, the second sealing surface design has 20 groups of cooling holes with the diameter of 5mm in the angle of rotation wheel.

It should be noted that the wall design can withstand high temperatures below 2000K without deformation and the wall temperature remains below 500K, with a negligible amount of wall thermal expansion.

In this embodiment, the rotating angle wheel 1 is further provided with a sleeve 7 matched with the water-cooling rotating shaft, the sleeve is provided with a plurality of third cooling holes, and the third cooling holes exchange heat with air flow in the air flow channel when the air flow channel is in a circulating state.

The embodiments of the present invention have been described in detail, but the present invention is not limited to the embodiments described above as examples. It will be appreciated by those skilled in the art that various equivalent changes and modifications can be made without departing from the spirit and scope of the invention, and it is intended to cover all such modifications and alterations as fall within the true spirit and scope of the invention.