CN107367350B - Multifunctional safety pressure gauge - Google Patents
Multifunctional safety pressure gauge Download PDFInfo
- Publication number
- CN107367350B CN107367350B CN201710708281.XA CN201710708281A CN107367350B CN 107367350 B CN107367350 B CN 107367350B CN 201710708281 A CN201710708281 A CN 201710708281A CN 107367350 B CN107367350 B CN 107367350B
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- China
- Prior art keywords
- pressure
- chamber
- isolating
- instrument
- diaphragm
- 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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- 238000002955 isolation Methods 0.000 claims abstract description 47
- 238000013016 damping Methods 0.000 claims abstract description 41
- 239000007788 liquid Substances 0.000 claims abstract description 27
- 238000006073 displacement reaction Methods 0.000 claims abstract description 13
- 239000011521 glass Substances 0.000 claims abstract description 10
- 230000035485 pulse pressure Effects 0.000 claims description 10
- 230000009972 noncorrosive effect Effects 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 claims description 2
- 238000005259 measurement Methods 0.000 description 3
- 238000009530 blood pressure measurement Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- G01L19/06—Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
- G01L19/0672—Leakage or rupture protection or detection
-
- 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
- G01L19/06—Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
- G01L19/0609—Pressure pulsation damping arrangements
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The multifunctional safety pressure gauge comprises a watchcase and a glass, wherein an isolating device is arranged at the rear part of the inner cavity of the watchcase, a scale indicating device is arranged at the front part of the inner cavity of the watchcase, a dial is arranged below the scale indicating device, and an instrument elastic element and a movement are arranged below the dial; the isolating device is provided with an isolating diaphragm, the isolating diaphragm separates the isolating device into an isolating chamber and a pressure guiding chamber, a measured medium enters the isolating chamber of the instrument, the pressure guiding chamber is filled with pressure guiding liquid, the pressure guiding liquid is isolated from the measured medium by the isolating diaphragm, the pressure guiding liquid enters an elastic element of the instrument through a damping hole and a pressure guiding hole, the moving end of the instrument element is connected with a machine core, and a machine core shaft of the machine core is connected with a scale indicating device; if the pressure guiding chamber and the damping hole are leaked or the pressure guiding liquid is seriously lost, the damping hole is blocked by the displacement of the isolation diaphragm, so that the isolation diaphragm is not pressed and displaced any more, and when the pressure of the side pressure of the isolation chamber is reduced and is smaller than the pressure of the pressure guiding chamber, the isolation diaphragm can normally displace towards the direction of the isolation chamber, and the damping hole is opened.
Description
Technical Field
The application relates to the technical field of pressure meters, in particular to a multifunctional safety pressure meter.
Background
The multifunctional safety pressure gauge is widely used for pressure measurement in industries such as petroleum, chemical industry, metallurgy, military industry, aerospace, electric power, coal mine, medicine, printing and dyeing, and the like, but the existing pressure gauge only indicates the pressure measurement value, and no other method for protecting the normal use of the instrument is adopted. If the measurement medium requires harsh conditions, an instrument protection device is additionally arranged.
The functions of shock resistance, corrosion resistance and protection grade in the prior art are single functions in the instrument, and damping, overvoltage protection and isolation diaphragms are connected to the instrument by an additional device of the instrument, so that the prior art is not available at present for preventing the leakage of a measured medium, and the prior art is extremely inconvenient in the aspect of user type selection or causes great loss due to the failure of the instrument with wrong user type selection.
Disclosure of Invention
Aiming at the defects existing in the prior art, the application provides a multifunctional safety pressure gauge.
In order to solve the technical problems, the application is solved by the following technical scheme:
the multifunctional pressure gauge comprises a meter shell 7 and a meter glass 1, wherein the meter shell 7 and the meter glass 1 form a cavity, each meter part is arranged in the cavity, an isolating device 9 is arranged at the rear part of the cavity, scale indicating devices 3 and 4 are arranged at the front part of the cavity, a dial 2 is arranged at the rear part of one side, away from the meter glass 1, of each scale indicating device 3 and 4, and a meter elastic element 6 and a movement 5 are arranged below the dial 2; the isolating device 9 is provided with an isolating diaphragm 11, the isolating diaphragm 11 separates the isolating device into an isolating chamber 10 and a pressure guiding chamber 12, a measured medium enters the instrument isolating chamber 10 through a joint 8 between the watchcase 7 and external equipment, the pressure guiding chamber 12 is filled with pressure guiding liquid, the pressure guiding liquid is isolated from the measured medium by the isolating diaphragm 11, the pressure guiding liquid enters the instrument elastic element 6 through a damping hole 13 and a pressure guiding hole, the moving end of the instrument element is connected with the movement 5, a machine spindle of the movement 5 is connected with the scale indicating devices 3 and 4, and the scale indicating devices 3 and 4 indicate scale values in front of the dial 2; the isolation diaphragm is an elastic diaphragm, and when the pressure guide chamber, the damping hole, the pressure guide hole and the instrument elastic element leak or the pressure guide liquid is seriously lost, the damping hole is blocked by the displacement of the isolation diaphragm; when the elastic element of the instrument is pressed and deformed to reach a certain value, the isolation diaphragm is displaced to block the damping hole; when the lateral pressure of the isolation chamber is reduced and is smaller than the pressure of the pressure guide chamber, the isolation diaphragm can normally move towards the isolation chamber to open the damping hole.
Further, the tail end of the elastic element is provided with a connecting rod which is connected with the movement 5, the displacement of the elastic element is transmitted to the movement, the movement amplifies the displacement of the elastic element and drives the scale indicating devices 3 and 4 through the rotation of the movement shaft, and the scale indicating devices indicate that corresponding pressure scale values are carved on the dial 2.
Further, the pressure-guiding liquid is a non-flammable and non-corrosive liquid.
In one embodiment, when the measured medium in the isolation chamber 10 has pulse pressure, the damping hole 13 can weaken the pulse pressure transmitted by the isolation chamber 10, and prolong the time for the pressure in the isolation chamber 10 to pass through the damping hole.
In one embodiment, movement 5 is provided with a limiting device and a sector gear, the limiting device limiting the angle of rotation of the sector gear.
Further, when the value indicated by the instrument indication device is inconsistent with the actual measured value, the value indicated by the instrument indication device is adjusted to be consistent with the actual measured value through the pointer rotation angle adjustable device of the scale indication device.
In one embodiment, the watch case is filled with damping oil to mitigate damage to the instrument from vibration of the device.
Compared with the existing similar products, the multifunctional safety pressure gauge has the following characteristics: the instrument has the advantages of multiple protection functions, convenient shape selection, long service life of the instrument, good shockproof performance, overvoltage protection function, pulse pressure prevention of the measured medium, convenient maintenance, compact structure, fewer leakage points, no need of shape selection and additional devices, and capability of reducing the defects of the leakage points increased by additionally installing the additional devices.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
FIG. 1 is a schematic diagram of the structure of a multifunctional safety pressure gauge of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present application. It will be apparent that the described embodiments are some, but not all, embodiments of the application. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present application fall within the protection scope of the present application.
Referring to fig. 1, a schematic structural diagram of a preferred embodiment of a multifunctional safety pressure gauge according to the present application is shown.
The multifunctional pressure gauge comprises a meter shell 7 and a meter glass 1, wherein the meter shell 7 and the meter glass 1 form a cavity (protection level IP 68), and each meter part is arranged in the cavity. The rear part of the cavity is provided with an isolating device 9, the front part of the cavity is provided with scale indicating devices 3 and 4, the rear part of one side of the scale indicating devices 3 and 4, which is away from the watch glass 1, is provided with a dial 2, and an instrument elastic element 6 and a movement 5 are arranged below the dial 2. The isolating device 9 is provided with an isolating diaphragm 11, the isolating diaphragm 11 separates the isolating device into an isolating chamber 10 and a pressure guiding chamber 12, a measured medium enters the instrument isolating chamber 10 through a joint 8 between the watchcase 7 and external equipment, the pressure guiding chamber 12 is filled with pressure guiding liquid, the pressure guiding liquid is isolated from the measured medium by the isolating diaphragm 11, the pressure guiding liquid enters the instrument elastic element 6 through a damping hole 13 and the pressure guiding hole, the moving end of the instrument element is connected with the movement 5, a machine spindle of the movement 5 is connected with the scale indicating devices 3 and 4, and the scale indicating devices 3 and 4 indicate scale values in front of the dial 2. In the normal measurement process, a measured medium enters the instrument isolation chamber 10 through the joint 8 of the watchcase 7 and external equipment, when the pressure is increased, the measured medium pushes the isolation diaphragm 11 to displace towards the pressure guide chamber 12, the pressure guide liquid of the pressure guide chamber 12 is pushed to flow towards the damping hole 13, the pressure guide liquid flows to the instrument elastic element 6 through the pressure guide hole, the elastic element is expanded, the tail end of the elastic element generates displacement, the tail end of the elastic element is connected with the movement 5 through a connecting rod, the displacement of the elastic element is transmitted to the movement, and the movement amplifies the displacement of the elastic element and then drives the scale indicating devices 3 and 4 to indicate on the dial 2 through the rotation of the movement shaft. The dial is carved with corresponding pressure scale values.
Further, the isolation diaphragm 11 is an elastic diaphragm, if the pressure guiding chamber 12 and the damping hole 13, the pressure guiding hole and the instrument elastic element 6 leak or the pressure guiding liquid is seriously lost, the damping hole 13 is blocked by the displacement of the isolation diaphragm 11, so that the isolation diaphragm 11 is not pressed and displaced any more, the diameter of the damping hole 13 meets the condition that the side of the elastic diaphragm is pressed by 100MPa, and the isolation diaphragm 11 cannot be crushed under the condition that the pressure of the pressure guiding chamber is 0. When the isolation chamber of the isolation device is pressed to cause the isolation diaphragm 11 to displace towards the pressure guiding chamber, when the pressure deformation of the instrument elastic element reaches a certain value, the isolation diaphragm 11 displaces to block the damping hole, even if the pressure continues to be increased at the isolation chamber side of the isolation diaphragm 11, the instrument elastic element cannot receive the pressure transmitted from the pressure guiding hole, and when the pressure of the isolation chamber is reduced and is smaller than the pressure of the pressure guiding chamber, the isolation diaphragm 11 can normally displace towards the isolation chamber 10 to open the damping hole.
Further, the pressure-guiding liquid is a non-flammable and non-corrosive liquid.
In one embodiment, when the measured medium (isolation chamber) has a pulse pressure, the damping hole 13 weakens the pulse pressure transmitted by the isolation chamber 10, and prolongs the time for the pressure of the isolation chamber 10 to pass through the damping hole.
In one embodiment, movement 5 is provided with a limiting device and a sector gear (not shown in the figures), the limiting device limiting the angle of rotation of the sector gear.
Further, when the value indicated by the instrument indication device is inconsistent with the actual measured value, the value indicated by the instrument indication device is adjusted to be consistent with the actual measured value through the pointer rotation angle adjustable device of the scale indication device.
In one embodiment, the watch case is filled with damping oil to mitigate damage to the instrument from vibration of the device.
The multifunctional safety pressure gauge provided by the application has the following functions through the structure:
1. when the pressure reaches the maximum value of the dial, the isolation diaphragm 11 just moves to the opening of the damping hole 13 to block the damping orifice, when the pressure of the measured medium continues to increase, the isolation diaphragm 11 does not generate displacement, the elastic element does not generate expansion displacement any more, when the pressure of the measured medium is reduced to be lower than the expansion force of the elastic element 6, the elastic element pushes the isolation diaphragm 11 to displace towards the measured medium through the pressure guiding liquid, the damping orifice is opened, the instrument works normally, and the instrument is used for protecting the instrument from transmitting pressure to the instrument elastic element 6 when the pressure exceeds the maximum value of the pressure born by the instrument elastic element 6 and protecting the instrument elastic element 6 from being damaged by excessive pressure.
2. When the pressure-guiding liquid leakage occurs in the part behind the damping hole 13, the isolation diaphragm 11 is displaced to the opening of the damping hole 13 to block the damping hole opening, so that the medium to be tested is prevented from bursting through the isolation diaphragm, and the pressure-guiding liquid leakage flows out. So as to avoid safety accidents.
3. When the measured medium has pulse pressure, the damping hole can weaken the pulse pressure transmitted by the measured medium, and the time for the measured medium pressure to pass through the damping hole is prolonged. The instrument is protected from being damaged by the pulse pressure of the medium to be measured.
3. The instrument core limiting device can control the rotation angle of the core when the tail end of the instrument elastic element is excessively displaced under the action of external force, so that the instrument is prevented from being damaged due to the excessive rotation angle of the instrument core.
4. The pointer rotating adjustable device can rotate when the pointer indication value of the instrument is different from the actual pressure value, until the pointer indication value is equal to the actual measurement value.
5. The damping oil filled in the meter case can prevent damage to the meter caused by vibration of the device, and the damping oil has a lubricating effect, so that a rotating mechanism in the meter can reduce friction, the precision of the meter is improved, and the service life of the meter is longer.
It is to be understood that while the present application has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present application as defined by the following claims.
Claims (1)
1. A multifunctional safety pressure gauge is characterized in that: the meter comprises a meter shell and meter glass, wherein the meter shell and the meter glass form a cavity, each meter part is arranged in the cavity, an isolating device is arranged at the rear part of the cavity, a scale indicating device is arranged at the front part of the cavity, a dial is arranged at the rear part of one side, away from the meter glass, of the scale indicating device, and a meter elastic element and a machine core are arranged below the dial; the isolating device is provided with an isolating diaphragm, the isolating diaphragm isolates the isolating device into an isolating chamber and a pressure guiding chamber, a measured medium enters the isolating chamber of the instrument through the joint of the watchcase and external equipment, the pressure guiding chamber is filled with pressure guiding liquid, the pressure guiding liquid is isolated from the measured medium by the isolating diaphragm, the pressure guiding liquid enters an elastic element of the instrument through a damping hole and a pressure guiding hole, the moving end of the instrument element is connected with a machine core, a machine core shaft of the machine core is connected with a scale indicating device, and the scale indicating device indicates scale values in front of a dial; the isolation diaphragm is an elastic diaphragm, and when the pressure guide chamber, the damping hole, the pressure guide hole and the instrument elastic element leak or the pressure guide liquid is seriously lost, the damping hole is blocked by the displacement of the isolation diaphragm; when the elastic element of the instrument is pressed and deformed to reach a certain value, the isolation diaphragm is displaced to block the damping hole; when the lateral pressure of the isolation chamber is reduced and is smaller than the pressure of the pressure guide chamber, the isolation diaphragm can normally move towards the isolation chamber, and the damping hole is opened; the tail end of the elastic element is provided with a connecting rod which is connected with the movement to transmit the displacement of the elastic element to the movement, the movement amplifies the displacement of the elastic element and drives the scale indicating device through the rotation of the mandrel to indicate on the dial, and the dial is carved with corresponding pressure scale values; the pressure-guiding liquid is a non-flammable and non-corrosive liquid; when the measured medium in the isolation chamber has pulse pressure, the damping hole can weaken the pulse pressure transmitted by the isolation chamber, and the time for the pressure of the isolation chamber to pass through the damping hole is prolonged; the movement is provided with a limiting device and a sector gear, and the limiting device limits the rotating angle of the sector gear; when the value indicated by the instrument indication device is inconsistent with the actual measured value, the value indicated by the instrument indication device is adjusted to be consistent with the actual measured value through the pointer rotation angle adjustable device of the scale indication device; damping oil is filled in the meter shell to reduce damage to the meter caused by vibration of the device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710708281.XA CN107367350B (en) | 2017-08-17 | 2017-08-17 | Multifunctional safety pressure gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710708281.XA CN107367350B (en) | 2017-08-17 | 2017-08-17 | Multifunctional safety pressure gauge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107367350A CN107367350A (en) | 2017-11-21 |
| CN107367350B true CN107367350B (en) | 2023-11-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710708281.XA Active CN107367350B (en) | 2017-08-17 | 2017-08-17 | Multifunctional safety pressure gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107367350B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109540379A (en) * | 2018-12-20 | 2019-03-29 | 安徽天康(集团)股份有限公司 | A kind of pressure gauge with function of failure alarm |
| CN115165201A (en) * | 2022-06-17 | 2022-10-11 | 青岛科奥仪表制造有限公司 | Anti-seismic pulse pressure-resistant safety pressure gauge |
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| CN201476922U (en) * | 2009-07-25 | 2010-05-19 | 张舜先 | Safety industrial pressure gauge |
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2017
- 2017-08-17 CN CN201710708281.XA patent/CN107367350B/en active Active
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| CN102057265A (en) * | 2008-06-12 | 2011-05-11 | 罗斯蒙德公司 | Improved isolation system for process pressure measurement |
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| CN105277311A (en) * | 2014-06-30 | 2016-01-27 | 罗斯蒙特公司 | Process isolation diaphragm assembly for metal process seal |
| CN204479236U (en) * | 2015-03-27 | 2015-07-15 | 马鞍山现代仪表有限公司 | A kind of diving blowout-back pressure gauge |
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| Publication number | Publication date |
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| CN107367350A (en) | 2017-11-21 |
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Effective date of registration: 20220525 Address after: 266000 guchaotou community, Chengyang street, Chengyang District, Qingdao City, Shandong Province Applicant after: Qingdao Keao Instrument Manufacturing Co.,Ltd. Address before: 266000 ancient Temple Industrial Park, Chengyang street, Chengyang District, Qingdao City, Shandong Province (west end of gas station) Applicant before: Zhang Shunxian |
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