阅读说明：本技术 先导式气氧控制装置 (Pilot-operated type gas oxygen control device ) 是由 尤罡 柳珊 张晓东 许闯 王莉 王立君 陈庆功 于 2019-08-21 设计创作，主要内容包括：本发明提供了一种先导式气氧控制装置,包括：线圈组件(1)、第一阀芯组件(2)、第二阀芯组件(3)、主壳体(5)以及进口管嘴(9)；所述线圈组件(1)与第一阀芯组件(2)连接；所述线圈组件(1)能够驱动第一阀芯组件(2)进行轴向运动；所述第一阀芯组件(2)与主壳体(5)连接；所述第二阀芯组件(3)安装在主壳体(5)内；所述进口管嘴(9)与主壳体(5)连接。本发明结构合理,操作方便；在功耗、体积和重量方面能够达到运载火箭总体对300N发动机控制阀的指标要求,能够用于运载火箭300N发动机。(The invention provides a pilot-operated type gas oxygen control device, comprising: the valve core assembly comprises a coil assembly (1), a first valve core assembly (2), a second valve core assembly (3), a main shell (5) and an inlet nozzle (9); the coil assembly (1) is connected with the first valve core assembly (2); the coil assembly (1) can drive the first valve core assembly (2) to axially move; the first valve core assembly (2) is connected with the main shell (5); the second valve core assembly (3) is arranged in the main shell (5); the inlet nozzle (9) is connected with the main shell (5). The invention has reasonable structure and convenient operation; the power consumption, the volume and the weight can meet the index requirements of the carrier rocket on the control valve of the 300N engine, and the engine can be used for the 300N engine of the carrier rocket.)

1. A pilot-operated gas oxygen control apparatus, comprising: the valve core assembly comprises a coil assembly (1), a first valve core assembly (2), a second valve core assembly (3), a main shell (5) and an inlet nozzle (9);

the coil assembly (1) is connected with the first valve core assembly (2);

the coil assembly (1) can drive the first valve core assembly (2) to axially move;

the first valve core assembly (2) is connected with the main shell (5);

the second valve core assembly (3) is arranged in the main shell (5);

the inlet nozzle (9) is connected with the main shell (5).

2. The pilot-operated gas oxygen control device according to claim 1, further comprising: a main spring (7), the main spring (7) being mounted within the main housing (5); the main spring (7) can apply pre-tightening force to the second valve core assembly (3).

3. The pilot-operated gas oxygen control device according to claim 1, further comprising: a spring (12), the spring (12) being disposed between the coil assembly (1) and the first spool assembly (2); the spring (12) can apply pre-tightening force to the first valve core assembly (2).

4. The pilot-operated gas oxygen control device according to claim 1, further comprising: the baffle ring (10), the said baffle ring (10) is installed in main casing (5); the baffle ring (10) can cut off a medium channel between the excircle of the second valve core assembly (3) and the inner hole of the main shell (5).

5. The pilot-operated gas oxygen control device according to claim 1, further comprising: a cover plate (6), the cover plate (6) being mounted on the main housing (5); the cover plate (6) can enclose the medium inside the device.

6. The pilot-operated gas oxygen control device according to claim 1, further comprising: a first O-ring (13) and a second O-ring (14); the first O-shaped ring (13) and the second O-shaped ring (14) are arranged on the main shell (5); the first O-shaped ring (13) and the second O-shaped ring (14) can prevent the medium from flowing out of the device.

7. The pilot-operated gas oxygen control device according to claim 1, further comprising: a filter (4), said filter (4) being arranged between the inlet nozzle (9) and the main housing (5); the filter (4) can prevent the excess in the working medium from entering the inner cavity of the device.

8. The pilot-operated gas oxygen control device according to claim 1, characterized in that the second spool assembly (3) is provided with a damping orifice.

9. The piloted aerooxygen control device of claim 4, wherein the number of said baffle rings (10) is 2; the baffle ring (10) and the main shell (5) form a sliding matching surface.

10. The piloted aerooxygen control device of claim 5, wherein the main housing (5) and the cover plate (6) are made of stainless steel.

Technical Field

The invention relates to a pilot-operated type gas oxygen control device for a carrier rocket, in particular to a pilot-operated type gas oxygen control device, and especially relates to a light low-power-consumption pilot-operated type gas oxygen control device.

Background

The light low-power-consumption pilot-operated type gas oxygen control device is an important component in a carrier rocket propulsion system and is a 300N engine control valve. The carrier rocket has strict requirements on indexes of a 300N engine control valve, particularly strict requirements on working times, weight, flow resistance and power consumption, and in order to meet the overall index requirements on a 300N engine electromagnetic valve, a pilot type large-flow electromagnetic valve is designed according to the requirements of an engine control valve design task book for supplying an oxidant for a 300N binary engine of a carrier rocket propulsion system to realize ignition and shutdown of the engine. Patent document CN107795407A discloses a rail attitude control engine temperature control device for propellant before valve after shutdown, which comprises a storage tank, an output pipeline, a valve front cavity, an engine electromagnetic valve, a circulating pump and a return pipeline; wherein, the storage tank is a hollow spherical structure; the storage tank, the output pipeline and one end of the valve front cavity are communicated in sequence; the engine electromagnetic valve is fixedly arranged at the top of the valve front cavity and is communicated with the valve front cavity; the electromagnetic valve of the engine is communicated with the external thrust chamber; one end of the return pipeline is communicated with the valve front cavity; the other end of the return pipeline is communicated with the output pipeline; the circulating pump is arranged on the return pipeline and is close to the joint of the return pipeline and the valve front cavity.

However, the conventional propellant control valve has the following problems:

1. there are still structural optimisations.

2. Under the given gaseous oxygen flow and flow resistance conditions, the traditional propellant control valve can not meet the index requirements of the carrier rocket on the control valve of the 300N engine in terms of power consumption, volume and weight, and can not be used for the 300N engine of the carrier rocket.

Disclosure of Invention

In view of the defects in the prior art, the invention aims to provide a pilot-operated type gas oxygen control device.

According to the present invention, there is provided a pilot-operated type gas oxygen control apparatus comprising: the coil assembly 1, the first valve core assembly 2, the second valve core assembly 3, the main shell 5 and the inlet nozzle 9;

the coil component 1 is connected with the first valve core component 2;

the coil component 1 can drive the first valve core component 2 to axially move;

the first valve core component 2 is connected with the main shell 5;

the second valve core assembly 3 is arranged in the main shell 5;

the inlet nipple 9 is connected to the main housing 5.

Preferably, the pilot-operated gas oxygen control apparatus further comprises: a main spring 7, said main spring 7 being mounted within the main housing 5; the main spring 7 can apply pre-tightening force to the second valve spool assembly 3.

Preferably, the method further comprises the following steps: a spring 12, the spring 12 being disposed between the coil assembly 1 and the first spool assembly 2; the spring 12 can apply a preload to the first valve core assembly 2.

Preferably, the pilot-operated gas oxygen control apparatus further comprises: a baffle ring 10, wherein the baffle ring 10 is installed in the main shell 5; the baffle ring 10 can cut off a medium channel between the outer circle of the second valve core assembly 3 and the inner hole of the main shell 5.

Preferably, the pilot-operated gas oxygen control apparatus further comprises: a cover plate 6, the cover plate 6 being mounted on the main housing 5; the cover plate 6 is capable of enclosing the medium inside the device; the main shell 5 and the cover plate 6 are made of stainless steel materials.

Preferably, the pilot-operated gas oxygen control apparatus further comprises: a first O-ring 13 and a second O-ring 14; the first O-shaped ring 13 and the second O-shaped ring 14 are mounted on the main shell 5; the first and second O- rings 13, 14 prevent the medium from flowing out of the device.

Preferably, the pilot-operated gas oxygen control apparatus further comprises: a filter 4, said filter 4 being arranged between the inlet nozzle 9 and the main housing 5; the filter 4 can block the excess in the working medium from entering the inner cavity of the device.

Preferably, the second spool assembly 3 is provided with a damping hole.

Preferably, the number of the baffle rings 10 is 2; the baffle ring 10 and the main shell 5 form a sliding matching surface.

Preferably, the main housing 5 and the cover plate 6 are made of stainless steel.

Compared with the prior art, the invention has the following beneficial effects:

1. reasonable structure and convenient operation.

2. The power consumption, the volume and the weight can meet the index requirements of the carrier rocket on the control valve of the 300N engine, and the engine can be used for the 300N engine of the carrier rocket.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic view of the overall structure of a pilot-operated type oxygen control device according to the present invention.

The figures show that:

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.

As shown in fig. 1, the present invention provides a pilot-operated gas oxygen control apparatus, comprising: the coil assembly 1, the first valve core assembly 2, the second valve core assembly 3, the main shell 5 and the inlet nozzle 9; the coil component 1 is connected with the first valve core component 2; the coil component 1 can drive the first valve core component 2 to axially move; the first valve core component 2 is connected with the main shell 5; the second valve core assembly 3 is arranged in the main shell 5; the inlet nozzle 9 is connected with the main shell 5; the pilot-operated type gas oxygen control device further comprises: a main spring 7, said main spring 7 being mounted within the main housing 5; the main spring 7 can apply pre-tightening force to the second valve spool assembly 3. In a preferred embodiment, the coil assembly 1 is used for generating electromagnetic suction force to drive the first valve core assembly 2 arranged in the pilot valve to axially move so as to realize the opening or closing of the pilot valve; the first valve core component 2 realizes the opening or closing of a main valve through the axial movement of the first valve core component. In a preferred embodiment, the main spring 7 is used for applying a pre-tightening force to the second valve spool assembly 3, so that a non-metallic sealing member on the second valve spool assembly 3 is pressed and attached to a valve seat of the main valve of the main housing, and reliable sealing when the main valve is closed is realized. In a preferred embodiment, the axial movement of the second valve core assembly 3 is controlled by controlling the axial movement of the first valve core assembly 2, and compared with a direct-acting solenoid valve with the same caliber, the power consumption is lower, the volume is smaller, and the weight is lighter.

Further, the pilot-operated type gas oxygen control device further includes: a spring 12, the spring 12 being disposed between the coil assembly 1 and the first spool assembly 2; the spring 12 can apply pre-tightening force to the first valve core assembly 2; the pilot-operated type gas oxygen control device further comprises: a baffle ring 10, wherein the baffle ring 10 is installed in the main shell 5; the baffle ring 10 can cut off a medium channel between the outer circle of the second valve spool component 3 and the inner hole of the main shell 5; the pilot-operated type gas oxygen control device further comprises: a cover plate 6, the cover plate 6 being mounted on the main housing 5; the cover plate 6 is capable of enclosing the medium inside the device; the main shell 5 and the cover plate 6 are made of stainless steel materials. In the preferred embodiment, the main housing 5 is used for placing the second spool assembly 3 and the cover plate 6, and has both the functions of a main valve seat and a pilot valve seat. In a preferred embodiment, the baffle ring 10 is used for cutting off a medium channel between the outer circle of the first valve core assembly 2 and the inner hole of the main shell, so that the medium can completely pass through the damping hole, and the abrasion between the first valve core assembly 2 and the main shell 5 can be reduced, so that the service life of the device is increased. In a preferred embodiment, the main housing 5 integrates a main valve seat, a pilot valve seat and a flow passage aperture.

Further, the pilot-operated gas oxygen control apparatus further includes: a first O-ring 13 and a second O-ring 14; the first O-shaped ring 13 and the second O-shaped ring 14 are mounted on the main shell 5; the first O-shaped ring 13 and the second O-shaped ring 14 can prevent the medium from flowing out of the device; the pilot-operated type gas oxygen control device further comprises: a filter 4, said filter 4 being arranged between the inlet nozzle 9 and the main housing 5; the filter 4 can block the excess in the working medium from entering the inner cavity of the device; the second valve core assembly 3 is provided with a damping hole; the number of the baffle rings 10 is 2; the baffle ring 10 and the main shell 5 form a sliding matching surface. In a preferred embodiment, said inlet nozzle 9 is associated with the main casing 5 for connection with the outside; the spring 12 is used for applying a pretightening force to the first valve core assembly 2, so that the nonmetal sealing element on the first valve core assembly 2 is tightly pressed and attached on a valve seat of a pilot valve of the main shell, and reliable sealing when the pilot valve is closed is realized. In a preferred embodiment, the first and second O- rings 13, 14 are used for leakage control of the device.

Furthermore, when the pilot-operated type gas oxygen control device does not need to work, the device is in a power-off state, electromagnetic suction force is not generated at the time, the first valve core assembly 2 and the second valve core assembly 3 are respectively pressed and attached to the metal seat under the action of two closing-facilitating forces of pre-tightening force and medium pressure of the spring 12 and the main spring 7, and the pilot valve and the main valve are both kept at the closing positions; when the valve is required to provide medium flow, the first valve core component 2 is electrified, an induction magnetic field is generated around the coil, a magnetic loop is formed by components made of soft magnetic materials, the first valve core component 2 overcomes the pretightening force and the medium pressure of the pilot valve spring to move under the action of electromagnetic attraction force which is beneficial to opening the valve, and the pilot valve is opened; the medium upstream of the first valve core assembly 2 empties the gas upstream of the second valve core assembly 3 and flows to the downstream through a flow passage hole between the cover plate 6 and the first valve core assembly 2; the second valve core assembly 3 overcomes the spring force under the action of downstream pressure, and the main valve is opened; when the pilot-operated solenoid valve does not need to work, the coil assembly is powered off, the induced magnetic field around the coil is gradually weakened until the induced magnetic field disappears, further the electromagnetic suction force borne by the first valve core assembly 2 is gradually weakened to be insufficient to overcome the pre-tightening force and the medium pressure of the pilot valve spring, the first valve core assembly 2 is pressed and attached to the main shell metal seat again, and the pilot valve is closed; the pressure upstream of the second spool assembly 3 is again balanced with the downstream pressure and the main valve closes under the pre-load of the main spring 7. The pilot-operated valve scheme utilizes the pressure of the working medium to drive the main valve, so that the control of the large-caliber main valve can be realized by only adopting a pilot valve with a small caliber, and the pilot-operated valve scheme has the advantages of small volume, light weight and low power consumption compared with a direct-operated electromagnetic valve scheme. In a preferred example, the pilot type gas oxygen control device has the pilot valve opening degree of 0.6mm, the power consumption of only 18W and the weight of the valve of only 800 g.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.