CN210005155U

CN210005155U - pressure ratio bellows

Info

Publication number: CN210005155U
Application number: CN201920712113.2U
Authority: CN
Inventors: 吴波; 程丽
Original assignee: Anhui Weimai Ome Science & Technology Co Ltd
Current assignee: Anhui Weimai Ome Science & Technology Co Ltd
Priority date: 2019-05-17
Filing date: 2019-05-17
Publication date: 2020-01-31
Anticipated expiration: 2029-05-17

Abstract

The utility model discloses a kind of pressure ratio bellows, including base, stop collar, interior bellows, outer bellows, apical axis, closing cap, the vertical threaded connection stop collar of base up end center department, the outside of stop collar sets up interior bellows, the welding of inner membrance box lower extreme and base up end is at , the outer bellows sets up in the inner membrance box outside, adventitia box lower extreme and base up end welding, the apical axis rigid coupling is in the stop collar upper end, and apical axis lower extreme and inner membrance box upper end welding, adventitia box top is arranged in to the closing cap, the closing cap is connected apical axis and adventitia box at , sets up interior bellows and outer bellows in this application, and the adventitia box can bear atmospheric pressure, and the inner membrance box bears operating pressure, and two bellows can detect atmospheric pressure and operating pressure's change fast to produce different pressure ratios in different periods, the pressure ratio appearance corresponding compression and extension of the bellows that corresponds with it, thereby the switching of quick control gassing activity .

Description

pressure ratio bellows

Technical Field

The utility model relates to a kinds of pressure ratio bellows is applied to bellows processing technology field.

Background

The diaphragm capsule is also used by people as a capacitive sensor, and is applied to according to good performance in the aspects of flow, pressure and liquid level measurement, the pressure ratio diaphragm capsule is a novel control structure applied to the deflation valve , the deflation valve is controlled to be opened and closed along with the change of the pressure ratio, and is applied to the field of aerospace.

SUMMERY OF THE UTILITY MODEL

For solving prior art scheme's defect, the utility model discloses an kinds of pressure are than the diaphragm capsule, have the advantage that the reaction is sensitive, the precision is high.

The utility model discloses an kind of pressure ratio bellows, including base, stop collar, interior bellows, outer bellows, apical axis, closing cap, the vertical threaded connection stop collar of base up end center department, the outside of stop collar sets up interior bellows, adventitia box lower extreme and base up end welding are plays, the outer bellows outside sets up in the outer bellows, adventitia box lower extreme and base up end welding, the apical axis rigid coupling is in the stop collar upper end, and apical axis down terminal surface and inner membrance box upper end welding, adventitia box top is arranged in to the closing cap, apical axis embedding closing cap up end department, the closing cap is connected the apical axis with adventitia box at plays.

The lower part of the limiting sleeve is provided with an external thread, and the position of the base corresponding to the limiting sleeve is provided with a thread groove matched with the external thread.

By adopting the technical scheme, the method has the following advantages:

1. the reaction is sensitive;

2. the precision is high, and the bellows is installed on the aircraft to the pressure ratio bellows in this application, sets up interior bellows and outer bellows, and the adventitia box can bear atmospheric pressure, and the intima box bears operating pressure, but two bellows short-term test atmospheric pressure and operating pressure's change to produce different pressure ratios in the period of difference, the pressure ratio bellows that corresponds with it appears corresponding compression and extension, thereby the switching of the quick control air release activity .

Drawings

Fig. 1 is a schematic cross-sectional view of kinds of bellows.

Wherein: 1-a base; 2-a limit sleeve; 3-inner bellows; 4-outer bellows; 5-a top shaft; 6-sealing the cover.

Detailed Description

As shown in fig. 1, the utility model discloses an kinds of pressure ratio bellows, including base 1, stop collar 2, inner membrance box 3, adventitia box 4, apical axis 5, closing cap 6, base 1 up end center department vertical threaded connection stop collar 2, the outside of stop collar 2 sets up inner membrance boxes 3, the welding of inner membrance box 3 lower extreme and base 1 up end is in , outer bellows 4 sets up in the inner membrance box 3 outside, the welding of outer bellows 4 lower extreme and base 1 up end, apical axis 5 rigid coupling is in stop collar 2 upper end, and apical axis 5 lower extreme and inner membrance box 3 upper end welding, closing cap 6 is arranged in outer 4 top, apical axis 5 embedding closing cap 6 up end department, closing cap 6 is in with apical axis 5 and adventitia box 4 connection.

The lower part of the limiting sleeve 2 is provided with an external thread, and the position of the base 1 corresponding to the limiting sleeve 2 is provided with a thread groove matched with the external thread.

The utility model discloses an implement like this, the application the pressure ratio diaphragm capsule after the welding is accomplished, the evacuation is handled to the intermediate structure between inner diaphragm capsule 3 and the adventitia box 4, make inside absolute pressure be zero, the pressure ratio diaphragm capsule in this application is applied to the aircraft, at the during operation, inner diaphragm capsule 3 is used for bearing operating pressure, outer diaphragm capsule 4 bears atmospheric pressure, in aircraft flight process, the atmospheric pressure in the outside constantly changes, the pressure ratio diaphragm capsule operating pressure who corresponds with it also constantly changes, through inner diaphragm capsule 3, adventitia box 4 can be fast with these two pressure detection, and produce corresponding pressure ratio, the difference of pressure ratio leads to the pressure ratio diaphragm capsule to produce corresponding compression and extension, thereby the switching of the quick control gassing activity air inlet adopts this technical scheme, set up two diaphragm capsules, improve reaction rate and precision.

Finally, it should be noted that the above embodiments are only used for illustrating the present invention and not for limiting the technical solutions described in the present invention, therefore, although the present invention has been described in detail by referring to the above embodiments, those skilled in the art should understand that the present invention can be modified or replaced with equivalents, and is not a technical solution and modifications without departing from the spirit and scope of the present invention, which should be covered by the claims of the present invention.

Claims

The pressure ratio diaphragm capsule of 1, kinds includes base, stop collar, interior diaphragm capsule, outer diaphragm capsule, apical axis, closing cap, its characterized in that, the vertical threaded connection stop collar of base up end center department, the outside of stop collar sets up interior diaphragm capsules, the welding of inner membrance box lower extreme and base up end is up, outer diaphragm capsule sets up in the inner diaphragm capsule outside, adventitia box lower extreme and base up end welding, the apical axis rigid coupling is in the stop collar upper end, and apical axis lower extreme and inner membrance box upper end welding, the adventitia box top is arranged in to the closing cap, apical axis embedding closing cap up end department, the closing cap is connected apical axis and adventitia box in .
2. The kinds of pressure ratio bellows of claim 1, wherein the lower part of the position-limiting sleeve is provided with an external thread, and the base is provided with a thread groove corresponding to the position of the position-limiting sleeve.