CN209387187U - A kind of safety-type pressure-measuring device - Google Patents
A kind of safety-type pressure-measuring device Download PDFInfo
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- CN209387187U CN209387187U CN201920401992.7U CN201920401992U CN209387187U CN 209387187 U CN209387187 U CN 209387187U CN 201920401992 U CN201920401992 U CN 201920401992U CN 209387187 U CN209387187 U CN 209387187U
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- pressure
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Abstract
A kind of safety-type pressure-measuring device, including pressure pipeline, above-mentioned pressure pipeline and pipeline connection to be measured are arranged, and the other end of pressure pipeline is connected with a differential pressure measurement mechanism；The differential pressure measurement mechanism includes measurement shell, there are measurement chamber and pressure chamber in shell, the measurement chamber is connected to setting by a connecting pipe road with pressure chamber, the ratio between the connecting pipeline and the cross-sectional area of measurement chamber are not more than 0.1, it is intracavitary equipped with pilot liquid in measurement chamber and pressure, it is intracavitary equipped with manograph measuring, the manograph is connected to outer signals, the external pressure chamber of one Yu pressure pipeline connection are additionally provided in shell, the external pressure chamber is provided adjacent to measurement chamber, is equipped with flexible partition between external pressure chamber and measurement chamber.The application forms the pressure of pilot liquid by the conversion that extraneous pressure can be first passed through flexible partition, for high pressure-temperature highly corrosive fluid, it is only necessary to which the endurance for improving flexible partition improves its versatility and safety, and reduces its cost.
Description
Technical field
This application involves a kind of safety-type pressure-measuring devices.
Background technique
In industrial processes, pressure is a kind of common parameter, is mainly measured by pressure sensor.Pressure
Force snesor is not completely cured for detection system pressure and is converted into corresponding signal output according to the pressure size measured.However pressure
Method to detection system be it is highly important, it will be directly related to whether Detection task can smoothly complete.In this regard, need to be directed to
Different testing goals and concrete condition finds practical way after being analyzed again.The measurement method of pressure sensor is pressed
Means classification has: direct measurement, indirectly measurement and measurement in a closed series are had by measurement method classification: elementary errors formula, deviation type and zero-bit formula
Measurement.Have by measurement accuracy classification: equally accurate and unequal precision measurement.Have by situation of change classification: dynamic, static measurement.It presses
Whether sensing element contacts classification with measured medium has: contact and untouchable measurement etc..
In the measurement process of some super high pressure fluids, according to mode measured directly, it is difficult to ensure that good precision.
CN102472680A discloses a kind of relative pressure sensor, comprising: pressure measurement transducer 11, the pressure measurement
Converter has the measurement film and platform 13 of semiconductor chip 12, wherein forms base pressure therebetween in measurement film and platform
Power chamber；Supportive body 14, wherein platform is connected by pressure-bearing adherend 9 with the supportive body, and wherein reference pressure path is prolonged
Two aforementioned components are extended through to enter in reference pressure chamber；Sensor external main body 20, the shape in the sensor external main body
At converter chamber 21, which has the first opening and the second opening 23, wherein being surveyed pressure by first opening
Quantitative change parallel operation 11 is brought into converter chamber and the pressure measurement transducer 11 is maintained at the transformation by supportive body
In device chamber 21, the first opening is wherein sealed to supportive body densification, and wherein measures the side away from reference pressure chamber of film
It is accessible by the second opening and pressure medium；Wherein reference pressure path has the seal section of inflation, the seal section of the inflation
Pressure-bearing adherend 9 is extended at least across from reference pressure chamber, wherein seal section is airtightly close by flexible metalized plastics foil 19
Envelope.
CN1751231A provides a kind of small differential pressure measuring installation of ultraprecise, not via mechanical sliding part the case where
It is lower that small differential pressure is passed into electronic type weighing pressure converter, thus, it is possible to small differential pressure is continuously measured with high precision, and
Simple structure is so as to being greatly reduced manufacturing cost.Specifically, the small differential pressure measuring installation of ultraprecise includes: device master
Body (1) has spatial portion in inside；Compression plate (3) configures in the inner space of apparatus main body (1), by inside sky
Between be airtightly divided into lower space (7) and upper space (8)；Electronic type weighs pressure converter (2), and configuration is in lower part sky
Between in (7), supporting and fixing compression plate (3) on it；Fluid-tight portion (R) carries out liquid to the outer peripheral edge portion of above-mentioned compression plate (3)
Envelope keeps airtight between lower space (7) and upper space (8)；Pressure conversion is weighed by electronic type via compression plate (3)
Device (2) measures the small differential pressure between the pressure (P2) in pressure (P1) and lower space (7) in upper space (8).
Above-mentioned application provides certain thinking solved the problems, such as, but or by repeatedly conversion or structure is complicated,
Application space is limited.
Utility model content
To solve the above-mentioned problems, above-mentioned to take present applicant proposes a kind of safety-type pressure-measuring device, including pressure pipeline
Pressure pipe road and pipeline connection to be measured are arranged, and the other end of pressure pipeline is connected with a differential pressure measurement mechanism；The differential pressure is surveyed
Measuring mechanism includes measurement shell, there is measurement chamber and pressure chamber in shell, and the measurement chamber and pressure chamber pass through a connecting pipe road
Connection setting, the ratio between the connecting pipeline and the cross-sectional area of measurement chamber are not more than 0.1, lead in intracavitary be equipped with of measurement chamber and pressure
Hydraulic fluid, intracavitary equipped with manograph measuring, the manograph is connected to outer signals, and one is additionally provided in shell and is connected with pressure pipeline
Logical external pressure chamber, the external pressure chamber are provided adjacent to measurement chamber, are equipped with flexible partition between external pressure chamber and measurement chamber.Using this
Then kind structure passes through manograph so that the conversion that extraneous pressure can first pass through flexible partition forms the pressure of pilot liquid again
Pressure measurement is carried out, therefore for high pressure-temperature highly corrosive fluid, it is only necessary to which the endurance for improving flexible partition improves
Its versatility, and reduce its cost.
Preferably, the flexible partition is flat diaphragm type diaphragm.Monitoring while positive/negative-pressure can be carried out, and is avoided that in spy
The damage phenomenon that may cause in different situation.
Preferably, the flexible partition is abutted to be connected by several flat diaphragm type diaphragms and be formed.Since heterogeneity can be used
Flat diaphragm type diaphragm, therefore can be improved its versatility and sensitivity.
Preferably, the measurement shell includes upper housing and lower case, and the upper housing is sleeved in lower case, in upper casing
Fixed annulus block between body and lower case；The center culvert of the annulus block forms connecting pipeline, the annulus block
Measurement chamber is formed between upper housing；Pressure chamber and external pressure chamber are formed between the annulus block and lower case.
Preferably, the pilot liquid is the pilot liquid of preset pressure.The deformation extent for reducing flexible partition, to improve it
The accuracy of whole stability and measurement.
The application can be brought the following benefits:
1, the application forms the pressure of pilot liquid by the conversion that extraneous pressure can be first passed through flexible partition, then again
Pressure measurement is carried out by manograph, therefore for high pressure-temperature highly corrosive fluid, it is only necessary to improve the endurance of flexible partition
, its versatility and safety are improved, and reduce its cost；
2, when the scheme made of flexible partition is connected as several flat diaphragm type diaphragms abutting, since difference can be used
The flat diaphragm type diaphragm of property, therefore can be improved its versatility and sensitivity；
3, when using the pilot liquid of preset pressure, it is possible to reduce the deformation extent of flexible partition, to improve its entirety
Stability and measurement accuracy.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present application, constitutes part of this application, this Shen
Illustrative embodiments and their description please are not constituted an undue limitation on the present application for explaining the application.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of the application.
Specific embodiment
In order to clarify the technical characteristics of the invention, below by specific embodiment, and its attached drawing is combined, to this Shen
It please be described in detail.
As shown in the figure, for the clearer general idea for illustrating the application, with reference to the accompanying drawings of the specification with example
Mode be described in detail.
In addition, in the description of the present application, it is to be understood that term " center ", "upper", "lower", "front", "rear",
The orientation of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " axial direction ", " radial direction ", " circumferential direction "
Or positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description the application and simplifies description, and
It is not that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore
It should not be understood as the limitation to the application.
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present application, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
In this application unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected, can also be communication；It can be directly connected, can also indirectly connected through an intermediary, it can be with
It is the interaction relationship of the connection or two elements inside two elements.For the ordinary skill in the art, may be used
To understand the concrete meaning of above-mentioned term in this application as the case may be.
In this application unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.In retouching for this specification
In stating, the description of reference term " one embodiment ", " some embodiments ", " example ", " specific example " or " some examples " etc.
Mean that particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one of the application
In embodiment or example.In the present specification, schematic expression of the above terms are necessarily directed to identical embodiment
Or example.Moreover, particular features, structures, materials, or characteristics described can be in any one or more of the embodiments or examples
It can be combined in any suitable manner.
In one embodiment, as shown in Figure 1, a kind of safety-type pressure-measuring device, a kind of safety-type pressure-measuring device,
Including pressure pipeline 1, above-mentioned pressure pipeline 1 is connected to setting with pipeline 2 to be measured, and the other end of pressure pipeline 1 and a differential pressure are surveyed
Measuring mechanism is connected；The differential pressure measurement mechanism includes measurement shell, there is measurement chamber 3 and pressure chamber 4, the measurement in shell
Chamber 3 is connected to setting by a connecting pipe road 5 with pressure chamber 4, and the ratio between the connecting pipeline 5 and the cross-sectional area of measurement chamber 3 are less
In 0.1, it is equipped with pilot liquid in chamber 3 and pressure chamber 4 measuring, manograph 5, the manograph 5 and the external world are equipped in measurement chamber 3
Signal communication, an external pressure chamber 10 being connected to pressure pipeline 1 is additionally provided in shell, and the external pressure chamber 10 is set with the measurement adjoining of chamber 3
It sets, is equipped with flexible partition 6 between external pressure chamber 10 and measurement chamber 3.Using this kind of structure so that extraneous pressure can first pass through it is soft
Property partition 6 conversion form the pressure of pilot liquid, pressure measurement is then carried out by manograph 5 again, therefore for high pressure-temperature
Highly corrosive fluid, it is only necessary to which the endurance for improving flexible partition 6 improves its versatility, and reduces its cost.It is described
Flexible partition 6 is flat diaphragm type diaphragm.It can carry out monitoring while positive/negative-pressure, and be avoided that and may cause under special circumstances
Damage phenomenon.The flexible partition 6 is abutted to be connected by several flat diaphragm type diaphragms and be formed.Since flat membrane of different nature can be used
Formula diaphragm, therefore can be improved its versatility and sensitivity.The measurement shell includes upper housing 7 and lower case 8, it is described on
Shell 7 is sleeved in lower case 8, the fixed annulus block 9 between upper housing 7 and lower case 8；In the annulus block 9
Heart pipeline forms connecting pipeline 5, and measurement chamber 3 is formed between the annulus block 9 and upper housing 7；The annulus block 9 and lower casing
Pressure chamber 4 and external pressure chamber 10 are formed between body 8.The pilot liquid is the pilot liquid of preset pressure.Reduce the deformation of flexible partition 6
Degree, to improve the accuracy of its whole stability and measurement.
In use, the pressure pipeline 1 of the application is connected on pipeline 2 to be measured by modes such as welding, screw threads, and real
Now it is connected to, when carrying out pressure measurement, the fluid with pressure passes to external pressure chamber 10 from pipeline 2 to be measured by pressure first,
Pressure is passed to pressure chamber 4 by flexible partition 6 by external pressure chamber 10, and pressure is passed to measurement by connecting pipeline 5 by pressure chamber 4
Chamber 3, manograph 5 carry out pressure measurement and complete final pressure measurement operation.
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for system reality
For applying example, since it is substantially similar to the method embodiment, so being described relatively simple, related place is referring to embodiment of the method
Part explanation.
The above description is only an example of the present application, is not intended to limit this application.For those skilled in the art
For, various changes and changes are possible in this application.All any modifications made within the spirit and principles of the present application are equal
Replacement, improvement etc., should be included within the scope of the claims of this application.
Claims (5)
1. a kind of safety-type pressure-measuring device, it is characterised in that: including pressure pipeline, above-mentioned pressure pipeline and pipeline to be measured connect
Logical setting, the other end of pressure pipeline are connected with a differential pressure measurement mechanism；The differential pressure measurement mechanism includes measurement shell,
There are measurement chamber and pressure chamber, the measurement chamber to be connected to setting, the connecting pipeline by a connecting pipe road with pressure chamber in shell
It is not more than 0.1 with the ratio between the cross-sectional area of measurement chamber, is equipped with pilot liquid measurement chamber and pressure are intracavitary, is surveyed measuring intracavitary be equipped with
Depressor, the manograph are connected to outer signals, and the external pressure chamber of one Yu pressure pipeline connection, the external pressure chamber are additionally provided in shell
It is provided adjacent to measurement chamber, is equipped with flexible partition between external pressure chamber and measurement chamber.
2. a kind of safety-type pressure-measuring device according to claim 1, it is characterised in that: the flexible partition is flat diaphragm type
Diaphragm.
3. a kind of safety-type pressure-measuring device according to claim 2, it is characterised in that: the flexible partition is by several
Flat diaphragm type diaphragm is abutted to be connected and be formed.
4. a kind of safety-type pressure-measuring device according to claim 1, it is characterised in that: the measurement shell includes upper casing
Body and lower case, the upper housing are sleeved in lower case, the fixed annulus block between upper housing and lower case；The circle
The center culvert of ring block forms connecting pipeline, and measurement chamber is formed between the annulus block and upper housing；The annulus block
Pressure chamber and external pressure chamber are formed between lower case.
5. a kind of safety-type pressure-measuring device according to claim 1, it is characterised in that: the pilot liquid is preset pressure
Pilot liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920401992.7U CN209387187U (en) | 2019-03-26 | 2019-03-26 | A kind of safety-type pressure-measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920401992.7U CN209387187U (en) | 2019-03-26 | 2019-03-26 | A kind of safety-type pressure-measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209387187U true CN209387187U (en) | 2019-09-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920401992.7U Expired - Fee Related CN209387187U (en) | 2019-03-26 | 2019-03-26 | A kind of safety-type pressure-measuring device |
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| Country | Link |
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| CN (1) | CN209387187U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115824487A (en) * | 2022-04-28 | 2023-03-21 | 南方科技大学 | Underwater pressure change detection device |
-
2019
- 2019-03-26 CN CN201920401992.7U patent/CN209387187U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115824487A (en) * | 2022-04-28 | 2023-03-21 | 南方科技大学 | Underwater pressure change detection device |
| CN115824487B (en) * | 2022-04-28 | 2023-07-14 | 南方科技大学 | Underwater pressure change detection device |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190913 Termination date: 20210326 |