CN117073884A - Air pressure indicator device for all-welded air box - Google Patents
Air pressure indicator device for all-welded air box Download PDFInfo
- Publication number
- CN117073884A CN117073884A CN202311062181.6A CN202311062181A CN117073884A CN 117073884 A CN117073884 A CN 117073884A CN 202311062181 A CN202311062181 A CN 202311062181A CN 117073884 A CN117073884 A CN 117073884A
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- China
- Prior art keywords
- air
- air pressure
- welded
- indicator device
- pressure indicator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000007246 mechanism Effects 0.000 claims abstract description 61
- 238000012544 monitoring process Methods 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 6
- 230000003247 decreasing effect Effects 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 abstract description 8
- 238000001514 detection method Methods 0.000 abstract description 3
- 230000005684 electric field Effects 0.000 abstract description 3
- 230000005672 electromagnetic field Effects 0.000 abstract description 2
- 230000007774 longterm Effects 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 abstract 1
- 230000008859 change Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000005389 magnetism Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000012806 monitoring device Methods 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
- G01L7/02—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges
- G01L7/06—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges of the bellows type
- G01L7/063—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges of the bellows type with mechanical transmitting or indicating means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/08—Means for indicating or recording, e.g. for remote indication
- G01L19/10—Means for indicating or recording, e.g. for remote indication mechanical
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention relates to the field of air pressure detection of air tanks, in particular to an air pressure indicator device for an all-welded air tank. The invention provides an air pressure indicator device for an all-welded air box, which comprises the following components: the monitoring mechanism is arranged in the air box; the indicating mechanism is in transmission connection with the monitoring mechanism; the indication mechanism is provided with an indication; when the air pressure in the air box is increased or decreased, the monitoring mechanism drives the indication mechanism to synchronously increase or decrease the indication number. The sealing links and leakage points are increased, and the sealing performance of the all-welded gas tank of the switch cabinet product in the long-term operation process on site is ensured. The electromagnetic field sensor has the advantages of pure mechanical structure, high reliability, no interference in field complex electric field and magnetic field environments and good electromagnetic compatibility. The structure is simple, the number of parts is small and the parts are easy to obtain, and compared with a density relay, the cost is low.
Description
Technical Field
The invention relates to the field of air pressure detection of air tanks, in particular to an air pressure indicator device for an all-welded air tank.
Background
The existing medium-voltage switch cabinet gas tank is usually subjected to pressure display and monitoring in a mode of externally connecting a density relay, and the risk that gas leakage occurs easily in a sealing link is necessarily present. The lack of a sealing link in an all-welded gas tank solves the above-mentioned risk of gas leakage, but there is no suitable monitoring device that can be mechanically controlled in medium pressure environments to monitor the gas pressure in the gas tank. Therefore, it is necessary to design an air pressure indicator device for an all-welded air tank.
Disclosure of Invention
The invention aims to provide an air pressure indicator device for an all-welded air tank, so as to solve the problems.
In order to achieve the above object, the present invention provides an air pressure indicator device for an all-welded air tank, comprising: the monitoring mechanism is connected with the inner cavity of the gas tank;
the indicating mechanism is linked with the monitoring mechanism; and
the indicating mechanism is provided with an indication; wherein the method comprises the steps of
When the air pressure in the air box is increased or decreased, the monitoring mechanism drives the indication mechanism to synchronously increase or decrease the indication number.
Further, the monitoring mechanism comprises an internal magnet, the indicating mechanism comprises an external magnet, and the internal magnet is magnetically connected with the external magnet.
Further, the monitoring mechanism further comprises a corrugated pipe, one end of the corrugated pipe is connected with the inner wall of the air box, and the other end of the corrugated pipe is connected with the built-in magnet; wherein the method comprises the steps of
When the air pressure in the air box is reduced, the corrugated pipe is stretched outwards, so that the corrugated pipe pushes the built-in magnet to slide outwards;
otherwise, the bellows pushes the built-in magnet to slide inwards.
Further, the indicating mechanism also comprises a rotating shaft and a number indicating disc fixed on the rotating shaft;
the external magnet is fixedly connected with the rotating shaft.
Further, the dial is divided into a security area and a warning area.
Further, the indicating mechanism further comprises a bracket, and two ends of the rotating shaft are rotatably connected with the bracket.
Further, a pointer is arranged on the bracket and points to the indication disk.
Further, the air pressure indicator device for the all-welded air tank further comprises a micro switch.
Compared with the prior art, the invention has the following beneficial effects: 1. the sealing link and the leakage point are not required to be added, and the sealing performance of the all-welded gas tank of the switch cabinet product in the long-term operation process on site is ensured. 2. The electromagnetic field sensor has the advantages of pure mechanical structure, high reliability, no interference in field complex electric field and magnetic field environments and good electromagnetic compatibility. 3. The structure is simple, the number of parts is small and the parts are easy to obtain, and compared with a density relay, the cost is low.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 shows a perspective view of an air pressure indicator device for an all-welded air tank of the present invention;
FIG. 2 shows an enlarged partial view of portion A of FIG. 1;
figure 3 shows a partial cross-sectional view of the air box of the present invention.
In the figure:
1. a monitoring mechanism; 11. a magnet is arranged in the magnetic core; 12. a bellows;
2. an indication mechanism; 21. an external magnet; 22. a rotating shaft; 23. a number plate; 231. a secure area; 232. an alert zone; 24. a bracket; 241. a pointer; 3. and a micro-switch.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the invention and therefore show only the structures which are relevant to the invention.
An embodiment, as shown in fig. 1, the present embodiment provides an air pressure indicator device for an all-welded air tank, including: a monitoring mechanism 1 and an indicating mechanism 2. The monitoring mechanism 1 is capable of monitoring the change in air pressure within the air box. The indication mechanism 2 can display the air pressure value in the air box in cooperation with the monitoring mechanism 1. In this embodiment, the gas tank refers to a gas tank in a medium voltage switchgear, and the gas tank is usually subjected to pressure display and monitoring by adopting a mode of externally connecting a density relay, so that the risk that gas leakage easily occurs in a sealing link is necessarily caused by such a mode, the risk of the gas leakage is solved by the fact that the gas tank is not provided with the sealing link, and the gas pressure in the gas tank is monitored by a proper monitoring device capable of being mechanically controlled in a medium voltage environment. Therefore, in this embodiment, the monitoring mechanism 1 and the indicating mechanism 2 adopt pure mechanical structures, so as to avoid being interfered by magnetic fields and electric fields in a medium-voltage environment, and have good electromagnetic compatibility, i.e. high reliability.
To achieve the above-mentioned effect, in this embodiment, the monitoring mechanism 1 is placed inside the closed air box, and the indicating mechanism 2 is disposed outside the air box, and meanwhile, the monitoring mechanism 1 and the indicating mechanism 2 are linked, so that when the monitoring mechanism 1 monitors the air pressure change in the air box, the indicating mechanism 2 can be driven to move, and then the air pressure change inside the air box is intuitively reflected.
In order to feed back the change in air pressure detected by the monitoring means 1 inside the air box to the indicating means 2 so that the indication number indicated by the indicating means 2 changes, in this embodiment, the monitoring means 1 and the indicating means 2 are magnetically connected. Through the arrangement, when the air pressure of the monitoring mechanism 1 in the air box changes, the monitoring mechanism 1 mechanically moves, and then the indicating mechanism 2 outside the air box is driven to synchronously move through magnetic force, so that the effect of changing the air pressure in the air box into mechanical movement and transmitting the mechanical movement to the indicating mechanism 2 is achieved.
To achieve the above effect, in this embodiment, the monitoring mechanism 1 includes a built-in magnet 11, and the built-in magnet 11 is magnetically connected to the indicating mechanism 2. The built-in magnet 11 and the indicating mechanism 2 have magnetism, so that the indicating mechanism 2 and the built-in magnet 11 transmit motion through the outer wall of the closed air box, and the indicating mechanism 2 synchronously moves.
In addition, in order to make the motion of the detection mechanism reversible so as to continuously monitor the air pressure inside the air box, the monitoring mechanism 1 is elastically connected with the inner cavity of the air box, specifically, the monitoring mechanism 1 further comprises a corrugated pipe 12, the corrugated pipe 12 is a pipe fitting with a continuously folded pipe wall and can realize the expansion and contraction in the length direction, one end of the corrugated pipe 12 is connected with the inner wall of the air box, and the other end of the corrugated pipe 12 is connected with the built-in magnet 11. Through this kind of setting for the internal air pressure of gas tank reduces the time, bellows 12 is stretched under self elasticity effect, otherwise, shortens, can drive built-in magnet 11 reciprocal slip through the flexible of bellows 12 simultaneously, in order to realize the reversible effect of monitoring the motion of gas tank. When the air pressure in the air box is reduced, the corrugated tube 12 is stretched outwards, so that the corrugated tube 12 pushes the built-in magnet 11 to slide outwards. Conversely, the bellows 12 pushes the built-in magnet 11 to slide inward.
The indication mechanism 2 is magnetically connected with the monitoring mechanism 1, specifically, the indication mechanism 2 comprises an external magnet 21, the external magnet 21 also has magnetism, and the external magnet 21 is magnetically connected with the internal magnet 11 through the outer wall of the air box. Meanwhile, the indication mechanism 2 has an indication, so that when the air pressure in the air box is increased or decreased, the bellows 12 drives the built-in magnet 11 to move, and the built-in magnet 11 drives the external magnet 21 to synchronously move, so that the indication of the indication mechanism 2 is increased or decreased synchronously.
In order to achieve the above effect, in this embodiment, the indicating mechanism 2 further includes a bracket 24, the bracket 24 has a rotating shaft 22 thereon, and two ends of the rotating shaft 22 are rotatably connected to the bracket 24, that is, the rotating shaft 22 can rotate along the bracket 24. The rotating shaft 22 is fixedly provided with a number indicating disc 23, and meanwhile, the external magnet 21 is fixedly connected with the rotating shaft 22. Through the arrangement, when the built-in magnet 11 moves, the external magnet 21 can be driven to drive the rotating shaft 22 to rotate around the bracket 24, and when the bracket 24 rotates, the number plate 23 is synchronously driven to rotate, so that the position change of the external magnet 21 can be intuitively displayed through the rotation of the number plate 23, namely, the air pressure change in the reaction air box.
In order to facilitate the operator to distinguish the warning value of the air pressure of the air box, in this embodiment, the dial 23 is divided into a safety area 231 and a warning area 232, the safety area 231 is green, and the warning area 232 is red.
In order to facilitate the operator to observe the range indicated by the indication of the indication disk 23, a pointer 241 is disposed on the support 24, and the pointer 241 points to the indication disk 23.
In addition, when the air pressure in the air box reaches the warning position, an alarm feedback is required to be given to the case of the air pressure shortage, so in this embodiment, the air pressure indicator device for an all-welded air box may further include a micro switch 3 as an option. When the pointer 241 indicates that the area moves from green to near the red-green boundary line, the roller of the micro switch 3 is sprung open, so that the background monitoring feedback signal is given to early warn that the gas pressure in the gas tank is insufficient.
It should be noted that technical features such as other components of the air pressure indicator device for an all-welded air tank according to the present invention should be considered as the prior art, and specific structures, working principles, and possible control manners and spatial arrangement of the technical features should be selected conventionally in the art, and should not be considered as the invention point of the present invention, and the present invention is not further specifically developed and detailed.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. An air pressure indicator device for an all-welded air box, comprising:
the monitoring mechanism (1) is connected with the inner cavity of the gas tank;
the indication mechanism (2) is linked with the monitoring mechanism (1); and
the indicating mechanism (2) is provided with an indication; wherein the method comprises the steps of
When the air pressure in the air box is increased or decreased, the monitoring mechanism (1) drives the indication mechanism (2) to synchronously increase or decrease the indication.
2. The air pressure indicator device for an all-welded air tank according to claim 1, wherein,
the monitoring mechanism (1) comprises an internal magnet (11), the indicating mechanism (2) comprises an external magnet (21), and the internal magnet (11) is magnetically connected with the external magnet (21).
3. The air pressure indicator device for an all-welded air tank according to claim 2, wherein,
the monitoring mechanism (1) further comprises a corrugated pipe (12), one end of the corrugated pipe (12) is connected with the inner wall of the air box, and the other end of the corrugated pipe is connected with the built-in magnet (11); wherein the method comprises the steps of
When the air pressure in the air box is reduced, the corrugated pipe (12) is stretched outwards, so that the corrugated pipe (12) pushes the built-in magnet (11) to slide outwards;
conversely, the bellows (12) pushes the built-in magnet (11) to slide inwards.
4. The air pressure indicator device for an all-welded air tank according to claim 2, wherein,
the indicating mechanism (2) further comprises a rotating shaft (22) and a number indicating disc (23) fixed on the rotating shaft (22);
the external magnet (21) is fixedly connected with the rotating shaft (22).
5. The air pressure indicator device for an all-welded air tank according to claim 4, wherein,
the dial (23) is divided into a security area (231) and a warning area (232).
6. The air pressure indicator device for an all-welded air tank according to claim 4, wherein,
the indicating mechanism (2) further comprises a bracket (24), and two ends of the rotating shaft (22) are rotatably connected with the bracket (24).
7. The air pressure indicator device for an all-welded air tank according to claim 6, wherein,
the support (24) is provided with a pointer (241), and the pointer (241) points to the indication disc (23).
8. The air pressure indicator device for an all-welded air tank according to claim 1, wherein,
the air pressure indicator device for the all-welded air box further comprises a micro switch (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311062181.6A CN117073884A (en) | 2023-08-23 | 2023-08-23 | Air pressure indicator device for all-welded air box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311062181.6A CN117073884A (en) | 2023-08-23 | 2023-08-23 | Air pressure indicator device for all-welded air box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117073884A true CN117073884A (en) | 2023-11-17 |
Family
ID=88709379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311062181.6A Withdrawn CN117073884A (en) | 2023-08-23 | 2023-08-23 | Air pressure indicator device for all-welded air box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117073884A (en) |
-
2023
- 2023-08-23 CN CN202311062181.6A patent/CN117073884A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20231117 |
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| WW01 | Invention patent application withdrawn after publication |