CN215721070U

CN215721070U - Self-adaptive exhaust device

Info

Publication number: CN215721070U
Application number: CN202120882224.5U
Authority: CN
Inventors: 赵立乔; 辛健; 张亚民; 张信波; 南铁玲; 高珠珠
Original assignee: Zhejiang Landspace Technology Co Ltd
Current assignee: Zhejiang Landspace Technology Co Ltd
Priority date: 2021-04-27
Filing date: 2021-04-27
Publication date: 2022-02-01
Anticipated expiration: 2031-04-27

Abstract

The utility model provides a self-adaptive exhaust device, comprising: the connector is internally provided with a first cavity penetrating through two ends of the connector along a first direction, wherein the lower end of the connector is provided with an external thread for connecting an air supply pipeline, and the upper end of the connector is provided with an external thread; the exhaust cap is internally provided with a second cavity and a third cavity which are communicated, the exhaust cap is sleeved outside the external thread at the upper end of the joint through the second cavity, the upper end of the exhaust cap is provided with an exhaust flow passage connected to the third cavity, and the top end of the first cavity is communicated with the third cavity; the steel ball is configured to move up and down in the third cavity so as to open or close the first cavity through matching with the top end of the first cavity. The self-adaptive exhaust device is simple in structure and high in reliability, and meanwhile, the processing cost is reduced.

Description

Self-adaptive exhaust device

Technical Field

The utility model relates to the field of exhaust, in particular to a self-adaptive exhaust device of a carrier rocket connector.

Background

The gas circuit or liquid circuit connector of the carrier rocket mostly adopts a pneumatic unlocking mechanism to realize the falling of the connector, and the falling time is generally before the launching or the takeoff time of the rocket. Due to the fact that the launching preparation time period is long, abnormal pressure build-up of the pneumatic unlocking mechanism can be caused by internal leakage of the control electromagnetic valve with the falling connector, the connector is caused to fall abnormally, and normal launching tasks are affected.

In view of this, it is desirable to design an adaptive exhaust apparatus with simple structure and high reliability.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provides a self-adaptive exhaust device.

The utility model provides a self-adaptive exhaust device, comprising: the connector is internally provided with a first cavity penetrating through two ends of the connector along a first direction, wherein the lower end of the connector is provided with an external thread for connecting an air supply pipeline, and the upper end of the connector is provided with an external thread; the exhaust cap is internally provided with a second cavity and a third cavity which are communicated, the exhaust cap is sleeved outside the external thread at the upper end of the joint through the second cavity, the upper end of the exhaust cap is provided with an exhaust flow passage connected to the third cavity, and the top end of the first cavity is communicated with the third cavity; the steel ball is configured to move up and down in the third cavity so as to open or close the first cavity through matching with the top end of the first cavity.

According to an embodiment of the utility model, the adaptive exhaust device further comprises: and the sealing ring is arranged at the matching position of the outer side of the joint and the inner side of the exhaust cap for sealing.

According to one embodiment of the utility model, the cross section of the middle part of the joint perpendicular to the first direction is hexagonal, and the cross section of the upper end of the exhaust cap perpendicular to the first direction is hexagonal, so that the operation of a wrench is facilitated.

According to an embodiment of the utility model, the first cavity comprises a flared hole, and a flared opening of the flared hole is arranged on the lower end face of the joint downwards and used for realizing the matching with the air supply pipeline through a ball head.

According to one embodiment of the utility model, a piston sealing structure is arranged between the outer side of the upper end of the joint and the inner wall of the second cavity.

According to an embodiment of the present invention, the first cavity, the second cavity and the third cavity are cylinders, and the diameter of the second cavity is larger than the diameter of the third cavity; the upper end of the joint abuts against a transition surface formed by the third cavity and the second cavity, so that the third cavity is communicated with the first cavity.

According to one embodiment of the utility model, the diameter of the steel ball is larger than the diameter of the first cavity, and the steel ball closes the top of the first cavity under the action of gravity.

According to one embodiment of the utility model, a 90-degree taper hole structure is arranged below the exhaust flow channel, and the steel ball is jacked into the taper hole structure under the action of the air flow with the first pressure in the first cavity so as to seal the taper hole and realize the falling-off of the connector.

According to one embodiment of the utility model, the steel ball is jacked up under the action of the gas flow with the second pressure in the first cavity and does not reach the taper hole structure, so that the gas in the pipeline is discharged under the condition of valve internal leakage, wherein the second pressure is smaller than the first pressure.

According to one embodiment of the present invention, the exhaust flow path terminal communicates with an upper end of an exhaust branch pipe, and a lower end of the exhaust branch pipe communicates with the atmosphere.

The self-adaptive exhaust device realizes automatic exhaust through the mutual matching of the joint, the exhaust cap and the steel ball, so that the connector falls off under the normal launching condition of the carrier rocket, the structure is simple, the reliability is high, and the processing cost is reduced.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the utility model, as claimed.

Drawings

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

FIG. 1 is a schematic view of an adaptive exhaust according to one embodiment of the present invention;

FIG. 2 is a schematic diagram of an adaptive exhaust apparatus according to another embodiment of the present invention.

Reference numerals:

100-joint, 101-first cavity, 102-horn hole, 200-exhaust cap, 201-second cavity, 202-third cavity, 203-exhaust runner, 300-steel ball and 400-sealing ring.

Detailed Description

Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not to be construed as limiting the utility model, for the purposes of illustrating the principles of the utility model. Additionally, the components in the drawings are not necessarily to scale. For example, the dimensions of some of the elements or regions in the figures may be exaggerated relative to other elements or regions to help improve understanding of embodiments of the present invention.

The directional terms used in the following description are used in the illustrated directions, and do not limit the specific configurations of the embodiments of the present invention. In the description of the present invention, it should be noted that, unless otherwise specified, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.

Furthermore, the terms "comprises," "comprising," "includes," "including," "has," "having" or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a structure or component comprising a list of elements does not include only those elements but may include other mechanical components not expressly listed or inherent to such structure or component. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of additional like elements in the article or device comprising the element.

Spatially relative terms such as "below," "… below," "lower," "above," "… above," "upper," and the like are used for convenience in describing the positioning of one element relative to a second element and are intended to encompass different orientations of the device in addition to different orientations than those illustrated in the figures. Further, for example, the phrase "one element is over/under another element" may mean that the two elements are in direct contact, or that there is another element between the two elements. Furthermore, terms such as "first", "second", and the like, are also used to describe various elements, regions, sections, etc. and should not be taken as limiting. Like terms refer to like elements throughout the description.

It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.

FIG. 1 is a schematic view of an adaptive exhaust according to one embodiment of the present invention; FIG. 2 is a schematic diagram of an adaptive exhaust apparatus according to another embodiment of the present invention.

As shown in fig. 1, the present invention provides an adaptive exhaust apparatus including: the connector 100 is internally provided with a first cavity 101 which penetrates through two ends of the connector 100 along a first direction, wherein the lower end of the connector 100 is provided with an external thread for connecting an air supply pipeline, and the upper end of the connector 100 is provided with an external thread; the exhaust cap 200 is internally provided with a second cavity 201 and a third cavity 202 which are communicated, wherein the exhaust cap 200 is sleeved outside the external thread at the upper end of the connector 100 through the second cavity 201, the upper end of the exhaust cap 200 is provided with an exhaust flow passage 203 which is connected to the third cavity 202, and the top end of the first cavity 101 is communicated with the third cavity 202; and a steel ball 300 configured to be movable up and down in the third chamber 202 to open or close the first chamber 101 by being engaged with the top end of the first chamber 101.

It should be noted that, in order to facilitate description of the spatial relationship between the components, the present embodiment is described in terms of one orientation relationship among the components after the adaptive exhaust device is installed, and in practical application of a product, the entire adaptive exhaust device may be subjected to position conversion or flipping, without affecting the connection relationship between the components in the present embodiment.

Specifically, the self-adaptive exhaust device mainly comprises a joint 100, an exhaust cap 200 and a steel ball 300, wherein a first cavity 101 penetrating through two ends of the joint 100 along a first direction is arranged inside the joint 100, an external thread is arranged at the lower end of the joint 100 and used for connecting an air supply pipeline, and an external thread is arranged at the upper end of the joint 100 and used for connecting the exhaust cap 200. The inside second cavity 201 and the third cavity 202 that set up the intercommunication of exhaust cap 200 do not run through exhaust cap 200, and exhaust cap 200 overlaps the external screw thread outside at the upper end of connecting 100 through second cavity 201 cover, and the upper end of exhaust cap 200 does not run through the part and sets up exhaust runner 203 and be connected to third cavity 202, and first cavity 101 top and third cavity 202 intercommunication. The steel ball 300 is configured to be movable up and down in the third cavity 202, and opens or closes the first cavity 101 by engaging with the top end of the first cavity 101.

In this embodiment, when there is no airflow pressure or the airflow pressure in the first cavity 101 of the joint 100 is relatively low, the steel ball 300 is placed on the top end of the first cavity 101 under the action of gravity, and the air supply pipeline is sealed by the weight of the steel ball 300. When the airflow pressure of the first cavity 101 is higher, the steel ball 300 will be lifted by the airflow pressure, and as the airflow pressure increases, the steel ball 300 will rise along the third cavity 202 continuously, as shown in fig. 2, until it reaches the top end of the third cavity 202. The self-adaptive exhaust device adopts the steel ball 300 as the sealing valve core, the range of adaptive pressure is wide, the device is simple in structure, the processing cost is reduced, and the task reliability is improved.

According to an embodiment of the utility model, the adaptive exhaust device further comprises: and a sealing ring 400 provided at a fitting portion of an outer side of the joint 100 and an inner side of the exhaust cap 200 for sealing.

Specifically, the sealing ring 400 is disposed at the matching position between the outer side of the joint 100 and the inner side of the exhaust cap 200 for sealing to prevent gas leakage in the gas supply pipeline, and as an example, the sealing ring 400 may be an O-ring 400 to seal the gap between the joint 100 and the exhaust cap 200.

According to an embodiment of the present invention, the cross-section of the middle portion of the joint 100 perpendicular to the first direction is hexagonal, and the cross-section of the upper end of the exhaust cap 200 perpendicular to the first direction is hexagonal, which facilitates wrench operation.

Specifically, in order to facilitate the operation of an operator, a hexagonal cross section that a wrench can operate may be disposed in the middle of a portion of the joint 100 that is not embedded in the exhaust cap 200, and a cross section of the upper end of the exhaust cap 200 perpendicular to the first direction is hexagonal, which is advantageous for the assembly and connection of the joint 100 and the exhaust cap 200.

According to an embodiment of the present invention, the first cavity 101 includes a flared hole 102, and the flared opening of the flared hole 102 is disposed downward on the lower end surface of the joint 100 for achieving the fitting with the air supply pipeline through the ball head.

Specifically, the lower end of the first cavity 101 in the joint 100 is provided with a horn hole 102, the horn opening is arranged on the lower end face of the joint 100 downwards, a sealing profile is formed at the top end of the horn hole 102, and the horn hole 102 is matched with an air supply pipeline through a ball head to realize air flow supply.

According to an embodiment of the present invention, a piston sealing structure is provided between the outer side of the upper end of the joint 100 and the inner wall of the second chamber 201.

Specifically, in order to better seal the joint 100 and the vent cap 200, a piston sealing structure is provided between the outer side of the upper end of the joint 100 and the inner wall of the second cavity 201 of the vent cap 200.

According to an embodiment of the present invention, the first cavity 101, the second cavity 201, and the third cavity 202 are cylinders, and the diameter of the second cavity 201 is larger than the diameter of the third cavity 202; the upper end of the joint 100 abuts against a transition surface formed by the third cavity 202 to the second cavity 201, so that the third cavity 202 is communicated with the first cavity 101.

Specifically, in the present embodiment, the diameter of the upper end of the joint 100 is adapted to the diameter of the second cavity 201, so that the exhaust cap 200 is sleeved outside the upper end external thread of the joint 100 through the second cavity 201. The diameter of third cavity 202 is less than the diameter of second cavity 201, is convenient for set up in third cavity 202 steel ball 300 can with the top cooperation of first cavity 101, and the upper end of joint 100 is contradicted on the transition face that third cavity 202 formed to second cavity 201 to third cavity 202 and first cavity 101 intercommunication, air current can reach third cavity 202 after steel ball 300 is backed up from first cavity 101 under the pressure. The ingenious connection relation among the first cavity 101, the second cavity 201, the third cavity 202 and the steel ball 300 can realize the automatic exhaust of the self-adaptive exhaust device, and the reliability is high.

As shown in fig. 1, according to an embodiment of the present invention, the diameter of the steel ball 300 is larger than that of the first cavity 101, and the steel ball 300 closes the top of the first cavity 101 under the gravity.

Specifically, the diameter of the steel ball 300 is adapted to the diameter of the third cavity 202, the diameter of the steel ball 300 is larger than the diameter of the first cavity 101, the steel ball 300 seals the top of the first cavity 101 under the action of gravity, and the air supply pipeline is sealed by the weight of the steel ball 300.

As shown in fig. 2, according to an embodiment of the present invention, a 90-degree conical hole structure is disposed below the exhaust channel 203, and the steel ball 300 is pushed into the conical hole structure under the action of the air flow with the first pressure in the first cavity 101 to seal the conical hole, so as to realize the falling-off of the connector.

Specifically, the exhaust channel 203 is disposed at the top end of the third cavity 202 and connected by a 90-degree taper hole structure, so that there is a buffering space when the steel ball 300 reaches the top end of the third cavity 202. The steel ball 300 is jacked into the taper hole structure under the action of the airflow with the first pressure in the first cavity 101 to seal the taper hole, so that the rapid establishment of the gas pressure in the pipeline is ensured, and the falling task of the connector is realized. As an example, the first pressure value is set to be greater than 1 MPa.

According to one embodiment of the present invention, the steel ball 300 is lifted up by the gas flow having the second pressure in the first cavity 101 and does not reach the taper hole structure, so as to discharge the gas in the pipeline in case of leakage in the valve, wherein the second pressure is lower than the first pressure.

Specifically, when the pipeline upstream valve leaks, and when the airflow pressure in the first cavity 101 exceeds the second pressure value, the steel ball 300 can be jacked up by the airflow and cannot reach the inner sealing taper hole structure of the taper hole structure, so that the gas in the pipeline is discharged, the gas pressure value in the first cavity 101 is stabilized in the second pressure value, and the second pressure value is smaller than the first pressure value. As an example, the second pressure value is set to 700 Pa.

According to one embodiment of the present invention, the end of the exhaust flow path 203 communicates with the upper end of the exhaust branch pipe, and the lower end of the exhaust branch pipe communicates with the atmosphere.

Specifically, the end of the exhaust flow path 203 communicates with the upper end of an exhaust branch pipe, the lower end of which communicates with the atmosphere, and the exhaust branch pipe is disposed in a form high in the middle and low in the end (when the exhaust apparatus is placed in the position shown in fig. 1), so that intrusion of the surplus substances can be prevented. After the gas in the gas supply pipeline is discharged and exhausted, the steel ball 300 falls on the top of the joint 100 under the action of gravity, and the self-adaptive exhaust device recovers to the initial state.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An adaptive exhaust apparatus, comprising:

the connector is internally provided with a first cavity penetrating through two ends of the connector along a first direction, wherein the lower end of the connector is provided with an external thread for connecting an air supply pipeline, and the upper end of the connector is provided with an external thread;

the exhaust cap is internally provided with a second cavity and a third cavity which are communicated, the exhaust cap is sleeved outside the external thread at the upper end of the joint through the second cavity, the upper end of the exhaust cap is provided with an exhaust flow passage connected to the third cavity, and the top end of the first cavity is communicated with the third cavity;

the steel ball is configured to move up and down in the third cavity so as to open or close the first cavity through matching with the top end of the first cavity.

2. The adaptive exhaust apparatus according to claim 1, further comprising:

and the sealing ring is arranged at the matching position of the outer side of the joint and the inner side of the exhaust cap for sealing.

3. The adaptive exhaust apparatus according to claim 1, wherein a cross-section of the joint middle portion perpendicular to the first direction is hexagonal, and a cross-section of the upper end of the exhaust cap perpendicular to the first direction is hexagonal, so as to facilitate wrench operation.

4. The adaptive exhaust apparatus according to claim 1, wherein the first cavity comprises a flared hole, a flared opening of which is disposed downward on a lower end surface of the joint, for engagement with an air supply line via a ball head.

5. The adaptive exhaust device according to claim 1, wherein a piston seal structure is provided between an outer side of an upper end of the joint and an inner wall of the second chamber.

6. The adaptive exhaust apparatus according to claim 1, wherein the first, second and third cavities are cylindrical, and the diameter of the second cavity is greater than the diameter of the third cavity; the upper end of the joint abuts against a transition surface formed by the third cavity and the second cavity, so that the third cavity is communicated with the first cavity.

7. The adaptive exhaust device according to claim 6 wherein the steel ball has a diameter greater than a diameter of the first cavity, the steel ball closing the top of the first cavity under the force of gravity.

8. The adaptive exhaust device according to claim 1, wherein a 90-degree conical hole structure is arranged below the exhaust flow channel, and the steel ball is jacked into the conical hole structure under the action of the airflow with the first pressure in the first cavity so as to seal the conical hole and realize the falling of the connector.

9. The adaptive exhaust device according to claim 8, wherein the steel ball is lifted up by a gas flow having a second pressure in the first chamber and does not reach into the conical bore structure to achieve a bleed of gas in the conduit in case of a leak in the valve, wherein the second pressure is lower than the first pressure.

10. The adaptive exhaust apparatus according to claim 1, wherein the exhaust flow path terminal communicates with an upper end of an exhaust branch pipe, a lower end of which communicates with the atmosphere.