CN106768612B - Pressure vacuum meter with different measuring ranges displayed by linear scales - Google Patents
Pressure vacuum meter with different measuring ranges displayed by linear scales Download PDFInfo
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- CN106768612B CN106768612B CN201710155404.1A CN201710155404A CN106768612B CN 106768612 B CN106768612 B CN 106768612B CN 201710155404 A CN201710155404 A CN 201710155404A CN 106768612 B CN106768612 B CN 106768612B
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- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims description 21
- 230000008859 change Effects 0.000 claims description 13
- 230000007704 transition Effects 0.000 claims description 5
- 230000006872 improvement Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 230000005489 elastic deformation Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L21/00—Vacuum gauges
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- 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
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- 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
- G01L19/16—Dials; Mounting of dials
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- Physics & Mathematics (AREA)
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- Measuring Fluid Pressure (AREA)
Abstract
The utility model provides a pressure vacuum gauge of different ranges of linear scale demonstration, passes through flange joint below the pressure dial plate and connects, interior processing air passageway, and vacuum deformation board stacks the back with the pressure deformation board and passes through the bolt fastening in the inside of pressure dial plate, forms airtight air chamber between vacuum deformation board and the pressure dial plate, and the middle fixed sleeve pipe of vacuum deformation board is used for installing pointer mechanism. When the vacuum deflection type air conditioner works, when the air channel is vacuum, the vacuum deformation plate enables the sleeve to move downwards through the deformation of the vacuum deformation ring, and the pointer is dragged to deflect anticlockwise; when the pressure in the air channel is high, the vacuum deformation plate presses the pressure deformation plate to deform, so that the sleeve moves upwards and the pointer is dragged to deflect clockwise; the deflection scales are different through the thickness difference of the vacuum deformation plate and the pressure deformation plate. The pressure gauge makes the pointer deflect reversely by using the vacuum deformation plate and the pressure deformation plate, and makes the deflected scales different by using the thickness difference of the vacuum deformation plate and the pressure deformation plate. The device is simple and reliable.
Description
Technical Field
The invention relates to instruments and meters, in particular to a pressure vacuum meter with different measuring ranges displayed in linear scales.
Background
At present, pressure vacuum gauges in the market are all linear, the size of vacuum degree or pressure is represented through the deformation of a deformation plate, pressure gauge scales are reflected on the scales of the pressure vacuum gauges in bilateral symmetry and uniform scales, however, in actual use, when the negative pressure is 1bar, the pressure gauge is close to vacuum, and the positive pressure to be measured by the pressure gauge is usually far greater than the negative pressure, so that the linearly symmetric pressure vacuum gauges are not very accurate when measuring the negative pressure.
The nonlinear symmetrical pressure vacuum meter provided by the invention respectively measures positive pressure and negative pressure through the action of the two pressure plates, the vacuum deformation plate acts independently when measuring the negative pressure, and the vacuum deformation plate and the pressure deformation plate act in a combined manner when measuring the positive pressure. The pressure gauge makes the pointer deflect reversely by using the vacuum deformation plate and the pressure deformation plate, and makes the deflected scales different by using the thickness difference of the vacuum deformation plate and the pressure deformation plate. The device is simple, and the measurement is accurate (see dial plate digital display shown in figure 7).
Disclosure of Invention
Aiming at the defects existing in the problems, the invention provides the pressure vacuum gauge with different measuring ranges displayed in a linear scale mode.
In order to achieve the above object, the present invention provides a pressure vacuum gauge with linear scales displaying different measuring ranges, comprising:
the pressure gauge plate is a hollow cylinder, the bottom of the pressure gauge plate is connected with a joint through a flange, an air channel is machined in the joint, a sinking shoulder is arranged on the inner side of the pressure gauge plate, a bolt hole and a sealing groove are machined in the sinking shoulder, and a positioning bulge is also machined in the sinking shoulder;
the device comprises a vacuum deformation plate, a sleeve, a pointer mechanism, a plurality of vacuum deformation rings, a plurality of positioning grooves and a plurality of positioning holes, wherein the vacuum deformation plate is in a circular sheet shape, the sleeve is fixedly installed at the middle position of the vacuum deformation plate, the pointer mechanism is connected above the sleeve, the vacuum deformation rings are distributed around the sleeve and are corrugated, and the periphery of the circumference of the vacuum deformation plate is uniformly provided with the through holes I and the positioning grooves I;
the vacuum deformation device comprises a pressure deformation plate, a positioning groove and a positioning groove, wherein the pressure deformation plate is in a circular sheet shape, a sleeve hole is processed in the middle of the pressure deformation plate, pressure deformation rings are distributed around the sleeve hole, the pressure deformation rings can be stacked on the upper portion of the vacuum deformation ring without gaps, and a through hole II and a positioning groove II are formed in the periphery of the circumference of the pressure deformation plate;
the pressing plate is a circular ring, through holes III are uniformly processed around the circular ring, the through holes III are matched with the through holes I and the through holes II, the pressing plate is also provided with positioning grooves III, and the positioning grooves III are matched with the positioning grooves I and the positioning grooves II;
the locating slot I, the locating slot II and the locating slot III are installed at the protruding position of the locating slot, a countersunk screw sequentially penetrates through the through hole III, the through hole II and the through hole I, and the pressure plate is used for pressing the pressure deformation plate and the vacuum deformation plate.
As a further improvement of the invention, the pointer mechanism can convert the stroke change of the vacuum deformation plate into the change of the pointer reading.
As a further improvement of the invention, the sealing groove is of a special-shaped structure, a semicircular inner transition is arranged at the bolt hole, and a sealing ring is arranged in the sealing groove.
As a further improvement of the invention, the vacuum deformable plate has a thickness smaller than that of the pressure deformable plate.
As a further improvement of the invention, the sleeve passes through the sleeve hole, and the diameter of the sleeve is smaller than that of the sleeve hole.
The invention has the beneficial effects that:
1. the positive pressure and the negative pressure are respectively measured through the action of the two pressure plates, the vacuum deformation plate acts independently when the negative pressure is measured, and the vacuum deformation plate and the pressure deformation plate act jointly when the positive pressure is measured. The pressure gauge makes the pointer deflect reversely by using the vacuum deformation plate and the pressure deformation plate, and makes the deflected scales different by using the thickness difference of the vacuum deformation plate and the pressure deformation plate. The device is simple and the measurement is accurate.
2. The needle mechanism can convert the stroke change of the vacuum deformation plate into the change of the reading of the pointer, and is very intuitive.
3. The sealing groove is of a special-shaped structure, a semicircular inner transition is arranged at a bolt hole, a sealing ring is arranged in the sealing groove, and a closed air chamber is formed between the vacuum deformation plate and the pressure dial plate.
4. Through the seamless stack of vacuum deformation ring and pressure deformation ring, when receiving the malleation, vacuum deformation ring and pressure deformation ring together along with the change of pressure and elastic deformation, the scale that shows as malleation scale range is also even, and the thickness of vacuum pressure plate is little, and the range that makes the less malleation of the range of dial plate negative pressure is great.
5. The diameter of the sleeve is larger than that of the sleeve hole, and the sleeve can freely slide in the sleeve hole.
Drawings
FIG. 1 is a front view of a pressure vacuum gauge of the present invention with a linear scale showing different ranges;
FIG. 2 is a cross-sectional view and a top view of the pressure dial;
FIG. 3 is a structural view of a vacuum deformable plate;
FIG. 4 is a structural view of a pressure deformable plate;
FIG. 5 is a structural view of a platen;
FIG. 6 is an enlarged view of position A of FIG. 1;
fig. 7 is a schematic view of the dial reading of the vacuum manometer with linear scales displaying different ranges according to the present invention.
In the figure: 1. a pressure dial; 2. a flange; 3. a joint; 4. an air passage; 5. sealing the air chamber; 6. bolt holes; 7. a sealing groove; 8. a vacuum deformable plate; 81. a vacuum deformation ring; 82. a sleeve; 83. a through hole I; 84. positioning a groove I; 9. a pressure deformable plate; 91. a pressure deformable ring; 92. sleeving the pipe hole; 93. a through hole II; 94. positioning a groove II; 10. pressing a plate; 101. a through hole III; 102. positioning a groove III; 11. a pointer mechanism.
Detailed Description
As shown in fig. 1 to 7, a pressure vacuum gauge with a linear scale showing different ranges according to an embodiment of the present invention includes: the pressure dial plate 1 is a hollow cylinder, the bottom of the pressure dial plate 1 is connected with a connector 3 through a flange 2, an air channel 4 is machined in the connector 3, a sinking shoulder is arranged on the inner side of the pressure dial plate 1, a bolt hole 6 and a sealing groove 7 are machined in the position of the sinking shoulder, the sealing groove 7 is of a special-shaped structure, a semicircular inner transition is arranged at the position of the bolt hole 6, a sealing ring is installed in the sealing groove 7, and a positioning bulge is also machined in the position of the sinking shoulder; the vacuum deformation plate 8 is in a circular sheet shape, the middle position of the vacuum deformation plate 8 is fixedly provided with the sleeve 82, the pointer mechanism 11 is connected above the sleeve 82, the pointer mechanism 11 can convert the stroke change of the vacuum deformation plate 8 into the change of the pointer reading, the vacuum deformation ring 81 is distributed around the sleeve 82, the vacuum deformation ring 81 is in a corrugated shape, and the periphery of the circumference of the vacuum deformation plate 8 is also uniformly provided with the through hole I83 and the positioning groove I84; the pressure deformation plate 9 is in a circular sheet shape, a sleeve hole 92 is processed in the middle of the pressure deformation plate 9, the sleeve 82 penetrates through the sleeve hole 92, the diameter of the sleeve 82 is smaller than that of the sleeve hole 92, the pressure deformation ring 91 is distributed around the sleeve hole 92, the pressure deformation ring 91 can be stacked on the upper portion of the vacuum deformation ring 81 without a gap, the circumferential periphery of the pressure deformation plate 9 is provided with a through hole II93 and a positioning groove II94, and the thickness of the vacuum deformation plate 8 is smaller than that of the pressure deformation plate 9; the pressing plate 10 is a circular ring, through holes III101 are uniformly processed around the circular ring, the through holes III101 are matched with the through holes I83 and the through holes II93, the pressing plate 10 is further provided with positioning grooves III102, and the positioning grooves III102 are matched with the positioning grooves I84 and the positioning grooves II 94; the positioning groove I84, the positioning groove II94 and the positioning groove III102 are arranged at the position of the positioning bulge, the countersunk head screw sequentially penetrates through the through hole III101, the through hole II93 and the through hole I83, the pressure deformation plate 9 and the vacuum deformation plate 8 are pressed tightly by the pressing plate 10, and a closed air chamber 5 is formed between the vacuum deformation plate 8 and the pressure dial 1.
The positive pressure and the negative pressure are respectively measured under the action of the two pressure plates, the vacuum deformation plate acts independently when the negative pressure is measured, and the vacuum deformation plate and the pressure deformation plate act in a combined manner when the positive pressure is measured. The pressure gauge makes the pointer deflect reversely by using the vacuum deformation plate and the pressure deformation plate, and makes the deflected scales different by using the thickness difference of the vacuum deformation plate and the pressure deformation plate. The device is simple and the measurement is accurate. The needle mechanism can convert the stroke change of the vacuum deformation plate into the change of the reading of the pointer, and is very intuitive. The sealing groove is of a special-shaped structure, a semicircular inner transition is arranged at a bolt hole, a sealing ring is arranged in the sealing groove, and a closed air chamber is formed between the vacuum deformation plate and the pressure dial plate. Through the seamless stack of vacuum deformation ring and pressure deformation ring, when receiving the malleation, vacuum deformation ring and pressure deformation ring together along with the change of pressure and elastic deformation, the scale that shows as malleation scale range is also even, and the thickness of vacuum pressure plate is little, and the range that makes the less malleation of the range of dial plate negative pressure is great. The diameter of the sleeve is larger than that of the sleeve hole, and the sleeve can freely slide in the sleeve hole.
In particular use, the invention will be described separately with reference to the accompanying drawings for the convenience of understanding;
the working medium to be measured is connected into a pressure vacuum meter from a connector, a sealing groove is processed at the position of a shoulder sinking position of a pressure dial plate, a closed air chamber is formed between a vacuum deformation plate and the pressure dial plate, the working medium connected into the closed air chamber can generate an action of force on the vacuum deformation plate, the sleeve pipe generates up-and-down stroke change through the deformation of the vacuum deformation plate, the sleeve pipe reflects the force borne by the vacuum deformation plate as the angle deflection of a pressure pointer through a pointer mechanism, when the air channel is vacuum, the closed air chamber does not generate pressure on the vacuum pressure plate, the vacuum deformation plate is acted by the external atmospheric pressure of the closed air chamber, the vacuum deformation plate enables the sleeve pipe to move downwards through the deformation of a vacuum deformation ring, the sleeve pipe drags the pointer to deflect anticlockwise through the pointer mechanism, and the pointer is expressed that the pointer changes proportionally with the pressure in a negative pressure range; when pressure is in the air channel, the vacuum deformation plate presses the pressure deformation plate to deform, the sleeve moves upwards, the sleeve drags the pointer to deflect clockwise through the pointer mechanism, the deflection angle of the pointer linearly increases along with the increase of the pressure in the positive pressure range, and the deflection angle of the pointer corresponding to the variation value of unit pressure in the positive pressure range is smaller than that of a negative pressure area due to the fact that a certain thickness difference exists between the vacuum deformation plate and the pressure deformation plate.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A pressure vacuum gauge with a linear scale displaying different ranges, comprising:
the pressure dial plate (1) is a hollow cylinder, the bottom of the pressure dial plate (1) is connected with a connector (3) through a flange (2), an air channel (4) is machined in the connector (3), a sinking shoulder is arranged on the inner side of the pressure dial plate (1), a bolt hole (6) and a sealing groove (7) are machined in the sinking shoulder, and a positioning bulge is further machined in the sinking shoulder;
the device comprises a vacuum deformation plate (8), wherein the vacuum deformation plate (8) is in a circular sheet shape, a sleeve (82) is fixedly installed at the middle position, a pointer mechanism (11) is connected above the sleeve (82), vacuum deformation rings (81) are distributed around the sleeve (82), the vacuum deformation rings (81) are in a corrugated shape, and through holes I (83) and a positioning groove I (84) are uniformly distributed on the periphery of the circumference of the vacuum deformation plate (8);
the vacuum deformation ring is characterized in that the pressure deformation plate (9) is in a circular sheet shape, a sleeve hole (92) is formed in the middle of the pressure deformation plate (9), pressure deformation rings (91) are distributed around the sleeve hole (92), the pressure deformation rings (91) can be stacked on the upper portion of the vacuum deformation ring (81) without gaps, and the periphery of the circumference of the pressure deformation plate (9) is provided with a through hole II (93) and a positioning groove II (94);
the pressing plate (10) is a circular ring, through holes III (101) are uniformly machined in the periphery of the circular ring, the through holes III (101) are matched with the through holes I (83) and II (93), the pressing plate (10) is further provided with positioning grooves III (102), and the positioning grooves III (102) are matched with the positioning grooves I (84) and II (94);
the locating slot I (84), locating slot II (94) and locating slot III (102) are installed the protruding department in location, and the countersunk screw passes through-hole III (101), through-hole II (93), through-hole I (83) in proper order, clamp plate (10) will pressure deformation board (9) and vacuum deformation board (8) compress tightly.
2. The pressure vacuum gauge with linear scale displaying different measuring ranges according to claim 1, wherein: the pointer mechanism (11) can convert the stroke change of the vacuum deformation plate (8) into the change of pointer reading.
3. The pressure vacuum gauge with linear scale displaying different measuring ranges according to claim 1, wherein: the sealing groove (7) is of a special-shaped structure, a semicircular inner transition is arranged at the position of the bolt hole (6), and a sealing ring is installed in the sealing groove (7).
4. A pressure vacuum gauge with a linear scale displaying different ranges according to claim 1, wherein: the thickness of the vacuum deformation plate (8) is smaller than that of the pressure deformation plate (9).
5. A pressure vacuum gauge with a linear scale displaying different ranges according to claim 1, wherein: the sleeve (82) passes through the sleeve hole (92), and the diameter of the sleeve (82) is smaller than that of the sleeve hole (92).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710155404.1A CN106768612B (en) | 2017-03-16 | 2017-03-16 | Pressure vacuum meter with different measuring ranges displayed by linear scales |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710155404.1A CN106768612B (en) | 2017-03-16 | 2017-03-16 | Pressure vacuum meter with different measuring ranges displayed by linear scales |
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| Publication Number | Publication Date |
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| CN106768612A CN106768612A (en) | 2017-05-31 |
| CN106768612B true CN106768612B (en) | 2022-09-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710155404.1A Active CN106768612B (en) | 2017-03-16 | 2017-03-16 | Pressure vacuum meter with different measuring ranges displayed by linear scales |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110031033A (en) * | 2019-05-17 | 2019-07-19 | 武汉市康达电气有限公司 | A kind of broken line logarithmic scale table and its display methods |
| CN111964835B (en) * | 2020-08-06 | 2021-07-30 | 苏州讯如电子科技有限公司 | High-sensitivity range controllable and adjustable vacuum gauge |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7819014B1 (en) * | 2009-04-23 | 2010-10-26 | Rosemount Inc. | Capacitive gage pressure sensor with vacuum dielectric |
| CN201476921U (en) * | 2009-09-07 | 2010-05-19 | 北京布莱迪仪器仪表有限公司 | Bimetallic diaphragm and pressure meter |
| CN202057446U (en) * | 2010-12-22 | 2011-11-30 | 北京布莱迪仪器仪表有限公司 | Diaphragm limiting device of absolute pressure gauge |
| CN105547566A (en) * | 2015-11-30 | 2016-05-04 | 蚌埠大洋传感器系统工程有限公司 | High-precision temperature compensation pressure sensor |
| CN105628291A (en) * | 2016-03-10 | 2016-06-01 | 威卡自动化仪表（苏州）有限公司 | Double-diaphragm differential pressure measurement device |
| CN206573254U (en) * | 2017-03-16 | 2017-10-20 | 慈溪欧卡特仪表科技有限公司 | A kind of linear graduation shows the pressure vacuum meter of different ranges |
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Denomination of invention: A pressure vacuum gauge with linear scale display for different ranges Effective date of registration: 20231024 Granted publication date: 20220927 Pledgee: Ningbo Cixi Rural Commercial Bank Co.,Ltd. Pledgor: CIXI ALLGAKIND INSTRUMENT TECHNOLOGY CO.,LTD. Registration number: Y2023980062413 |