Multi-condition pneumatic pressure indicator

Abstract

This invention belongs to the field of pressure display technology and discloses a multi-condition pneumatic pressure indicator, installed on the wall of an oxygen delivery pipe. It includes: a normal oxygen pressure indicator component comprising a first glass window, a rubber liner, and a rubber diaphragm; a first mounting groove is formed in the oxygen delivery pipe wall, in which the rubber diaphragm and rubber liner are placed sequentially and then sealed by the first glass window; a first oxygen inlet channel and a second oxygen inlet channel are formed in the first mounting groove and connected by a flow-limiting orifice, the first oxygen inlet channel connecting to the lower part of the rubber diaphragm and the second oxygen inlet channel connecting to the upper part of the rubber diaphragm; and a warning oxygen pressure indicator component comprising a second glass window, an isolation diaphragm, a push rod assembly, and an indicator liner; a second mounting groove is formed in the oxygen delivery pipe wall, in which the isolation diaphragm, push rod assembly, and indicator liner are placed sequentially and then sealed by the second glass window; the isolation diaphragm deforms under oxygen pressure, driving the push rod assembly to rupture the indicator liner. This invention solves the safety hazard problem of existing pneumatic pressure indicators in oxygen environments.

Description

Technical Field

[0001] This invention belongs to the field of pneumatic pressure indication technology, specifically relating to a multi-condition pneumatic pressure indicator for safely displaying pressure in special environments. Background Technology

[0002] Existing pressure indicating devices are mostly electrical sensor pressure displays, which require a power supply to operate and are susceptible to signal interference. They cannot meet the requirements for safe pressure display in oxygen-pressure environments. Summary of the Invention

[0003] This invention addresses the safety hazards of existing pneumatic pressure indicators in oxygen environments by providing a multi-condition pneumatic pressure indicator that reliably and safely solves the problem of pipeline pressure indication in special environments through a mechanical-pneumatic principle.

[0004] The technical solution of this invention is implemented as follows:

[0005] A multi-condition pneumatic pressure indicator, installed on the wall of an oxygen delivery pipe, includes: The normal oxygen pressure indicator component includes a first glass window, a rubber liner and a rubber diaphragm. A first mounting groove is provided on the wall of the oxygen delivery pipe. The rubber diaphragm and the rubber liner are placed in the first mounting groove in sequence and then sealed by the first glass window. A first oxygen inlet channel and a second oxygen inlet channel are provided on the first mounting groove and connected by a flow-limiting hole. The first oxygen inlet channel is connected to the lower part of the rubber diaphragm and the second oxygen inlet channel is connected to the upper part of the rubber diaphragm. The early warning oxygen pressure indicator assembly includes a second glass window, an isolation diaphragm, a push rod assembly, and an indicator liner. A second mounting groove is provided on the oxygen delivery pipe wall. The isolation diaphragm, the push rod assembly, and the indicator liner are placed in the second mounting groove in sequence and then sealed by the second glass window. The isolation diaphragm deforms under the action of oxygen pressure, driving the push rod assembly to puncture the indicator liner.

[0006] As a further aspect of the present invention: the rubber diaphragm is designed with a wavy curved surface structure to sensitively respond to pressure changes, and both ends of the rubber diaphragm are sealed to the groove wall of the first mounting groove.

[0007] As a further aspect of the present invention: a filter pad is provided at the lower part of the rubber diaphragm, and the first oxygen inlet channel is connected to the filter pad.

[0008] As a further aspect of the present invention: the air inlet of the second oxygen inlet channel is located on the side wall of the first mounting groove and above the edge of the rubber diaphragm.

[0009] As a further aspect of the present invention: the rubber liner is wrapped around the opening of the first mounting groove, and an annular metal pad is placed at the edge. Then, the first glass window is placed, and a sealing gasket is provided between the first glass window and the metal pad. The edge of the first glass window is connected to the oxygen supply pipe wall by a pressure plate and fasteners.

[0010] As a further aspect of the present invention: a pressure sleeve is provided in the second mounting groove, and the isolation diaphragm is designed with a wavy irregular structure to sensitively react to pressure changes. It is sealed and wrapped around the lower end of the pressure sleeve and directly contacts the oxygen flow in the oxygen delivery tube.

[0011] As a further embodiment of the present invention: the pressure sleeve includes an actuation cavity and a display cavity, a sliding sleeve is provided on the inner wall of the actuation cavity, and the push rod assembly is assembled in the sliding sleeve.

[0012] As a further aspect of the present invention: a preload is provided between the upper end of the push rod assembly and the upper edge of the actuation cavity by a spring; The top of the top rod assembly is also covered with a display component, which is in a bright color.

[0013] As a further aspect of the present invention: an indicator liner is laid at the bottom of the display cavity, and then a second glass window is placed therein. The edge of the second glass window is connected to the oxygen supply pipe wall by a pressure plate and fasteners.

[0014] As a further aspect of the present invention: both the rubber liner and the indicator liner adopt a circular structure design and are provided with scratches.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention integrates a normal oxygen pressure indicator and a warning oxygen pressure indicator inside the valve body where oxygen flows through the flow channel and pneumatic indication design, and displays the oxygen pressure status in real time through mechanical and pneumatic indication.

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a multi-condition pneumatic pressure indicator according to the present invention.

[0018] The figures are labeled as follows: 1-Filter pad; 2-Sealing pad; 3-Metal pad; 4-First glass window; 5-Rubber liner; 6-Rubber diaphragm; 7-Second glass window; 8-Top rod assembly; 9-Spring; 10-Indicator liner; 11-Pressure sleeve; 12-Isolation diaphragm. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions in the embodiments of this invention will be described in more detail below with reference to the accompanying drawings.

[0020] In the accompanying drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, of the embodiments of the present invention.

[0021] The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] The following is in conjunction with the appendix Figure 1 The embodiments of the present invention will be described in detail below.

[0023] Example 1 This invention provides a multi-condition pneumatic pressure indicator, which is installed on the wall of an oxygen delivery pipe and includes: The normal oxygen pressure indicator component includes a first glass window 4, a rubber liner 5, and a rubber diaphragm 6. A first mounting groove is provided on the wall of the oxygen delivery pipe. The rubber diaphragm 6 and the rubber liner 5 are placed in the first mounting groove in sequence and then sealed by the first glass window 4. A first oxygen inlet channel and a second oxygen inlet channel are provided on the first mounting groove and connected by a flow-limiting hole. The first oxygen inlet channel is connected to the lower part of the rubber diaphragm 6, and the second oxygen inlet channel is connected to the upper part of the rubber diaphragm 6. The early warning oxygen pressure indicator assembly includes a second glass window 7, an isolation diaphragm 12, a push rod assembly 8, and an indicator liner 10. A second mounting groove is provided on the oxygen delivery pipe wall. The isolation diaphragm 12, the push rod assembly 8, and the indicator liner 10 are placed in the second mounting groove in sequence and then sealed by the second glass window 7. The isolation diaphragm 12 deforms under the action of oxygen pressure, driving the push rod assembly to puncture the indicator liner.

[0024] Furthermore, the rubber diaphragm 6 is designed with a wavy curved surface structure, which sensitively reacts to changes in the pressure difference on both sides of the diaphragm and promptly performs flipping and recovery actions. The two ends of the rubber diaphragm are sealed to the groove wall of the first mounting groove.

[0025] Furthermore, a filter pad 1 is provided at the lower part of the rubber diaphragm 6, and the first oxygen inlet channel is connected to the filter pad 1 to prevent the rubber diaphragm 6 from being sucked into the first oxygen inlet channel and torn during rapid recovery.

[0026] Furthermore, the air inlet of the second oxygen inlet channel is located on the side wall of the first mounting groove and above the edge of the rubber diaphragm 6, for transmitting the pipe oxygen through the flow-limiting hole to the top of the rubber diaphragm.

[0027] Furthermore, the rubber liner 5 wraps around the opening of the first mounting groove, with an annular metal pad 3 placed at its edge, and then the first glass window 4 is placed there. A sealing gasket 2 is provided between the first glass window 4 and the metal pad 3. The edge of the first glass window is connected to the oxygen supply pipe wall by a pressure plate and fasteners. The metal pad is used to isolate the rubber liner 5 from the first glass window 4; the sealing gasket 2 is used to seal and fix the first glass window to the pipe, isolating the inside and outside of the glass window and ensuring internal airtightness.

[0028] Furthermore, a pressure sleeve 11 is provided in the second mounting groove. The isolation diaphragm 12 is designed with a corrugated irregular structure, which is sensitive to pressure changes. It is sealed and wrapped around the lower end of the pressure sleeve 11 and is in direct contact with the oxygen flow in the oxygen delivery tube.

[0029] Furthermore, the pressure sleeve 11 includes an actuation cavity and a display cavity. The actuation cavity is located at the bottom, and a sliding sleeve is provided on its inner wall. The push rod assembly 8 is assembled in the sliding sleeve. The sliding sleeve is used to ensure the smooth movement of the push rod assembly 8 and reduce frictional resistance.

[0030] Furthermore, a preload is provided between the upper end of the push rod assembly 8 and the upper edge of the actuation chamber via a spring 9. The spring 9 is used to ensure the accurate position of the push rod assembly 8 in the actuation chamber, and at the same time provides the force that needs to be overcome when the warning pressure is displayed.

[0031] The top of the push rod assembly 8 is also covered with a display component. The display component is in a bright color and is used to push open the cross-shaped scratch in the center of the indicator liner 10, so as to facilitate accurate and timely reading of the warning pressure signal.

[0032] Furthermore, an indicator liner 10 is laid at the bottom of the display cavity, and then a second glass window 7 is placed there. The edge of the second glass window 7 is connected to the oxygen delivery pipe wall by a pressure plate and fasteners. When the indicator liner is pushed open, the brightly colored top rod assembly 8 display component is exposed.

[0033] Furthermore, both the rubber liner 5 and the indicator liner 10 adopt a circular structure design and are provided with scratches. This is to facilitate easy opening between the diaphragm and the display component, and to promptly display the pressure signal.

[0034] Example 2 This invention provides a multi-condition pneumatic pressure indicator, which is a pneumatic indicator for safely displaying pipeline pressure in oxygen environments. This pressure indicator is designed based on two structures, one for displaying oxygen pressure at lower pressure and the other for displaying oxygen pressure at higher pressures.

[0035] Structure 1 (lower pressure, normal oxygen pressure): When oxygen flows through the pipeline, the pressure upstream and downstream of the flow-limiting orifice is transmitted to both sides of the pneumatic indicator diaphragm through the flow-limiting orifice. At this time, due to the pressure difference, the rubber diaphragm will flip and push the center of the high-flow rubber liner to open, thus achieving the pressure indication function.

[0036] Structure Two (High Pressure, Warning Oxygen Pressure): When oxygen flows through the pipeline, the oxygen pressure is transmitted to the push rod through the diaphragm. The push rod moves upward, opening the rubber liner, causing the central "+" shape of the rubber liner to open. When the pressure is released, the spring force in the structure resets the rubber liner, push rod, and diaphragm, closing the central "+" shape of the rubber liner. A schematic diagram of the structure of this invention is attached. Figure 1 .

[0037] Structure 1: A rubber diaphragm 7 is installed in the middle of the pneumatic indicator, with its upper and lower sides connected to the two ends of the flow-limiting orifice in the oxygen pipeline, respectively. A filter pad 1 is installed on the lower side to prevent the rubber diaphragm 7 from being sucked into the middle vent and torn during rapid recovery. When there is gas flowing in the pipeline, a pressure difference is generated at both ends of the flow-limiting orifice, causing the rubber diaphragm 7 to move upward, pushing open the upper rubber liner 5. The metal pad 2 and sealing pad 3 are sealed and installed above the rubber liner 5. Finally, the pressure information is obtained through the outermost glass window 14.

[0038] Structure 2: The isolation diaphragm 12 is installed at the bottom of the pressure sleeve 11. After sensing the airflow flowing through the bottom, the isolation diaphragm will push it to move upward, thereby pushing the push rod assembly 8 to compress the spring 9 installed in the pressure sleeve. The push rod assembly moves upward and opens the upper indicator bushing 10, and obtains pressure information through the glass window 27.

[0039] Thus, the objective of this invention has been achieved.

[0040] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-condition pneumatic pressure indicator, characterized in that, Installed on the wall of the oxygen delivery pipe, including: The normal oxygen pressure indicator component includes a first glass window, a rubber liner and a rubber diaphragm. A first mounting groove is provided on the wall of the oxygen delivery pipe. The rubber diaphragm and the rubber liner are placed in the first mounting groove in sequence and then sealed by the first glass window. A first oxygen inlet channel and a second oxygen inlet channel are provided on the first mounting groove and connected by a flow-limiting hole. The first oxygen inlet channel is connected to the lower part of the rubber diaphragm and the second oxygen inlet channel is connected to the upper part of the rubber diaphragm. The early warning oxygen pressure indicator assembly includes a second glass window, an isolation diaphragm, a push rod assembly, and an indicator liner. A second mounting groove is provided on the oxygen delivery pipe wall. The isolation diaphragm, the push rod assembly, and the indicator liner are placed in the second mounting groove in sequence and then sealed by the second glass window. The isolation diaphragm deforms under the action of oxygen pressure, driving the push rod assembly to puncture the indicator liner.

2. The multi-condition pneumatic pressure indicator according to claim 1, characterized in that, The rubber diaphragm is designed with a wavy curved surface structure to sensitively respond to pressure changes, and both ends of the rubber diaphragm are sealed to the wall of the first mounting groove.

3. The multi-condition pneumatic pressure indicator according to claim 2, characterized in that, A filter pad is provided at the bottom of the rubber diaphragm, and the first oxygen inlet channel is connected to the filter pad.

4. The multi-condition pneumatic pressure indicator according to claim 3, characterized in that, The air inlet of the second oxygen inlet channel is located on the side wall of the first mounting groove and above the edge of the rubber diaphragm.

5. The multi-condition pneumatic pressure indicator according to claim 4, characterized in that, The rubber liner is wrapped around the opening of the first mounting groove, and an annular metal pad is placed at the edge. Then the first glass window is placed, and a sealing gasket is provided between the first glass window and the metal pad. The edge of the first glass window is connected to the oxygen supply pipe wall by a pressure plate and fasteners.

6. The multi-condition pneumatic pressure indicator according to claim 1, characterized in that, A pressure sleeve is provided in the second mounting groove. The isolation diaphragm is designed with a corrugated irregular structure to sensitively respond to pressure changes. It is sealed and wrapped around the lower end of the pressure sleeve and is in direct contact with the oxygen flow in the oxygen delivery tube.

7. The multi-condition pneumatic pressure indicator according to claim 6, characterized in that, The pressure sleeve includes an actuation cavity and a display cavity. A sliding sleeve is provided on the inner wall of the actuation cavity, and the push rod assembly is assembled in the sliding sleeve.

8. The multi-condition pneumatic pressure indicator according to claim 7, characterized in that, A spring provides preload between the upper end of the push rod assembly and the upper edge of the actuating chamber. The top of the top rod assembly is also covered with a display component, which is in a bright color.

9. The multi-condition pneumatic pressure indicator according to claim 8, characterized in that, An indicator liner is laid at the bottom of the display chamber, and then a second glass window is placed. The edge of the second glass window is connected to the oxygen supply pipe wall by a pressure plate and fasteners.

10. The multi-condition pneumatic pressure indicator according to any one of claims 1-9, characterized in that, Both the rubber liner and the indicator liner are designed with a circular structure and are marked with scratches.

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