CN208140155U - Measuring cell and measuring device including such measuring cell - Google Patents
Measuring cell and measuring device including such measuring cell Download PDFInfo
- Publication number
- CN208140155U CN208140155U CN201820741719.4U CN201820741719U CN208140155U CN 208140155 U CN208140155 U CN 208140155U CN 201820741719 U CN201820741719 U CN 201820741719U CN 208140155 U CN208140155 U CN 208140155U
- Authority
- CN
- China
- Prior art keywords
- partition
- measuring cell
- matrix
- measuring
- impermeable layer
- 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.)
- Active
Links
Abstract
The utility model provides a kind of measuring cell and measuring device.The measuring cell includes matrix, partition and impermeable layer, wherein partition is fixedly connected to matrix, and seal chamber is defined between partition and matrix.Impermeable layer be arranged in partition on the medial surface of seal chamber, also, impermeable layer extends at least past the join domain between partition and matrix on the medial surface of partition.The measuring device includes the measuring cell.
Description
Technical field
The utility model relates to a kind of measuring cell and the measuring device including such measuring cell.
Background technique
The content of this part provides only background information relevant to the utility model, may not constitute existing skill
Art.
In the industrial processes of the industries such as such as coal chemical industry, papermaking, cement, it usually needs acquisition process medium (or
Medium referred to as to be measured) measurement of correlation parameter (for example, pressure, pressure difference, liquid level etc.) so as to preferably carry out production or process
Control.Due to the limitation (high temperature, strong corrosive, high pressure etc.) of the working condition of such production, telemetering type survey is generallyd use
Device (for example, telemetering type transmitter) is measured to obtain the relevant parameter of medium to be measured.Lead in such telemetering type measuring device
It often include the measuring cell positioned at media end to be measured.The measuring cell may include matrix and partition.Wherein, partition with
Seal chamber is defined between matrix.Working fluid can be filled in seal chamber.Thus for example can be by partition two sides
Change in fluid pressure carry out the pressure measurement or monitoring of medium to be measured.
However, since many media to be measured are hydrogen-rich medium, and the hydrogen in medium to be measured can pass through partition enter it is close
It seals intracavitary and aggregation and causes stress deviation, so as to cause the measurement accuracy inaccuracy of measuring device, serious person will appear partition drum
The case where swollen or even rupture.
Therefore, it is badly in need of providing a kind of improved measuring cell and measuring device.
Utility model content
The purpose of this utility model is to provide a kind of improved measuring cell and measuring devices, to realize in following purposes
At least one：Measurement accuracy is improved, antiwear property is improved, improves service life, simplifies production procedure, save the cost.
One aspect according to the present utility model provides a kind of measuring cell, including matrix；Partition, the partition are solid
Surely it is connected to described matrix, and defines seal chamber between the partition and described matrix；And impermeable layer, it is described
Impermeable layer be arranged in the partition on the medial surface of the seal chamber, also, the impermeable layer is in the partition
The medial surface on be at least extended continuously join domain more than the partition and described matrix.
According to one embodiment, the partition is fixedly connected to described matrix by electric-resistance seam-welding.
According to one embodiment, the partition is connected to described matrix by TIG weldering and electric-resistance seam-welding, also, described
The welding region of electric-resistance seam-welding is located at the radially inner side of the welding region of TIG weldering.
According to one embodiment, the impermeable layer extends over the entire medial surface of the partition.
According to one embodiment, coating thickness of the impermeable layer on the partition, which is less than, is equal to 10 microns.
According to one embodiment, one or more annular crimp portions are formed on the partition.
According to one embodiment, the part in described matrix corresponding to the partition is provided with concave portion.
According to one embodiment, described matrix is provided with the fluid channel for filling fluid into the seal chamber.
According to one embodiment, the impermeable layer is the Gold plated Layer being plated on the medial surface of the partition.
Other side according to the present utility model, provides a kind of measuring device, and the measuring device includes above-mentioned
Measuring cell.
According to the utility model, it is provided with impermeable layer (for example, Gold plated Layer) on partition, therefore can prevent to be measured
Substance (such as hydrogen) in medium penetrates into seal chamber, to greatly improve the measurement essence of measuring cell and measuring device
Degree.Moreover, because impermeable layer is not directly contacted with medium to be measured using impermeable layer towards the design on the inside of seal chamber, prevent
Permeable formation will not be scratched by the particulate matter in medium to be measured, improve the antiwear property of product.Guarantee weld strength with
And under the premise of quality, the design of zero hydrogen permeation pathway is realized, to improve the service life of product.Further, since can
It is arranged with directly carrying out unilateral impermeable layer wholly or partially to sealing partition before partition is connected to matrix, it can be with
Realization is transported safely and low stock, saves a large amount of expense.Moreover, because impermeable layer can only cover partition, Ke Yiji
The earth reduces Material Cost.
Detailed description of the invention
By description referring to the drawings, the feature and advantage of one or several embodiments of the disclosure will become more
Add and be readily appreciated that, in the accompanying drawings：
Fig. 1 is the stereoscopic schematic diagram of measuring cell in accordance with one embodiment of the present disclosure；
Fig. 2 is the cross-sectional view of the measuring cell of Fig. 1；
Fig. 3 is the cross-sectional view of the measuring cell of Fig. 1；
Fig. 4 is the partial sectional view of measuring cell in accordance with one embodiment of the present disclosure；
Fig. 5 is the EDX microexamination image of the local section of measuring cell in accordance with one embodiment of the present disclosure；With
And
Fig. 6 is the structural schematic diagram of measuring device in accordance with one embodiment of the present disclosure.
Specific embodiment
Description related to the preferred embodiment is only exemplary below, and is definitely not to the disclosure and its application or usage
Limitation.In various figures, the same reference numerals are used to designate identical or corresponding component, therefore the structure of same parts
Repeated description will not be done by making.
In description herein, for the convenience of description, filled with measuring pressure/pressure difference telemetering type measurement of medium to be measured
Example is set to measuring cell according to the present utility model and measuring device is described.It is understood, however, that this is practical new
Type is not limited with structure described in following preferred embodiment and application, be can be applied to any feasible structure or is answered
In, for example, for measuring viscosity, liquid level etc..Similarly, the utility model is not also limited with telemetering type measuring device,
Also it can be applied in any feasible device or device.
As previously mentioned, generally including to be located at the measuring cell at medium to be measured in telemetering type measuring device.Such survey
Amount element can have the seal chamber limited by partition and matrix.(or can be filled with measuring fluid in seal chamber
Working fluid).Telemetering type measuring device can also include being located at away from the sensing component at a certain distance from measuring cell, measure
Cheng Zhong, measuring cell and media contact to be measured, and the pressure sensed is passed into sensing component, so that measuring cell be surveyed
The physical quantity of amount is converted to actually required digital quantity.In application process, the side backwards to seal chamber of partition (claims herein
For outside) and side (similarly be known as inside) towards seal chamber be subjected to pressure from medium to be measured and close respectively
Seal the pressure of intracavitary working fluid.The pressure of partition measurement in future medium passes to working fluid, and then working fluid will
The pressure experienced passes to sensing element and carries out relevant processing.Shown in Fig. 6 in accordance with one embodiment of the present disclosure
Measuring device structural schematic diagram in.Measuring device according to the present utility model may include the survey as being described more fully below
Measure element (as in Fig. 6 as shown by M).
Just Fig. 1-Fig. 6 is combined to be further described in detail measuring cell according to the present utility model below.For clear
The purpose of Chu is not marked all components in attached drawing.
Fig. 1 shows the stereoscopic schematic diagram of measuring cell in accordance with one embodiment of the present disclosure.As shown in Figure 1, root
Measuring cell according to the disclosure may include matrix 1 and partition 2, also, matrix 1 and partition 2 can be steel material.In this implementation
In mode, partition 2 can be generally circular sheet shaped piece.Partition 2 can be fixedly attached on matrix 1 by its periphery, be made
It obtains and limits seal chamber 3 (shown in Figure 3) between partition 2 and matrix 1.Working fluid can be equipped in seal chamber 3.Example
It such as, can be filled with oil in seal chamber 3.As a result, in application process, pressure of the lateral surface 22 of partition 2 by measuring medium
It can produce displacement, and this displacement can be passed to by sensing element by the working fluid in seal chamber, it is possible thereby to mention
For pressure parameter needed for process control.
Go out as shown in Figures 1 to 4, partition 2 can have one or more annular crimp portions 23, so that partition 2 can
To carry out the local displacement of deformation or progress appropriate.Alternatively, it with adequate thickness, can be set on partition 2
Set one or more recessed portions.Certainly, the wrinkle portion on partition 2 or recessed portion are not limited with annular.
Concave portion 15 can be set corresponding to the part of partition 2 on matrix 1, in order to by the partition 2 with it is described
Matrix 1 forms seal chamber 3.
Matrix 1 can be further attached to the sensing component of distal end.As shown in Figure 1 to Figure 3, matrix 1 can have flange
The through-hole 12 passed through for connecting elements (such as connection bolt) can be set in the flange portion 11 for portion 11.It can also be set on matrix 1
It is equipped with fluid channel 13.Before application measuring cell, working fluid can be injected into seal chamber 3 by fluid channel 13,
And the rear enclosed fluid channel 13 is completed in injection.As a result, when medium to be measured is directed to the lateral surface of partition 2, partition 2
Deformation or displacement appropriate can be carried out, according to the pressure for the measuring medium that it is experienced so as to carry out parameter extraction or survey
Amount.
However, the inventors discovered that, Partial Elements or ingredient (example since partition 2 is usually than relatively thin, in medium to be measured
Such as hydrogen) it easily propagates through partition 2 and penetrates into seal chamber 3, and then may dissolve in working fluid.Moreover, because the sky of seal chamber 3
Between it is relatively small and be it is closed, the infiltration of hydrogen will affect the pressure in seal chamber 3 and even result in 2 bulge of partition or rupture,
To influence the damage that the accuracy of measurement even results in measuring cell.
For this purpose, the invention proposes the solutions that impermeable structure is arranged.Impermeable layer can be set on partition 2,
To block the permeation pathway across partition.For rich in hydrogen medium to be measured for, Gold plated Layer can be set with prevent to
Hydrogen in measuring medium penetrates into seal chamber.Herein, for ease of description, only using Gold plated Layer as the one of impermeable layer
Example is described.For those skilled in the art, it can use according to the difference of practical application and be different from gold
Other barrier materials realize impermeable purpose.
However, if Gold plated Layer is arranged on the lateral surface 22 of partition 2, it is contemplated that may contain in some media to be measured
There is a large amount of solid particle (such as paper pulp, crushed stone, cinder etc.), these solid particles can scrape the Gold plated Layer on partition
It wipes.Since partition is usually softer than relatively thin and Gold plated Layer matter, Gold plated Layer is easy to be worn.Such Gold plated Layer will lose expected from it
Effectiveness leads to the drop of the antiwear property of measuring cell (or even measuring device) and the reduction of service life and measurement accuracy
It is low.In addition, such solution needs the seam region week between the entire lateral surface 22 and partition 2 and matrix 1 of partition 2
It encloses and all plates layer gold, this not only adds costs, also increase manufacturing process, and be unfavorable for subsequent transport and preservation.
In view of said circumstances, Gold plated Layer 4 can be arranged in partition 2 on the medial surface 21 of seal chamber 3.In this way,
Gold plated Layer 4 with media contact to be measured, therefore would not also be influenced by the solid particle in medium to be measured.
Gold plated Layer 4 can be at least extended continuously between the medial surface 21 of partition 2 and the corresponding part of matrix 1 more than partition
2 (in other words, the outer diameter of Gold plated Layer should be at least equal to or greater than the bonding pad of partition 2 Yu matrix 1 with the join domain of matrix 1
The outer diameter in domain), to prevent from leading to hydrogen permeation pathway in the join domain between partition 2 and matrix 1.Optionally, Gold plated Layer 4 can
To cover the entire medial surface 21 of partition 2 comprehensively.
It can be by way of electric-resistance seam-welding (or in other join domains that not will lead between partition 2 and matrix 1
The mode of Gold plated Layer damage) periphery of partition 2 is fixedly connected to matrix 1.
Fig. 5 shows the EDX microexamination figure of the local section of measuring cell in accordance with one embodiment of the present disclosure
Picture.From figure 5 it can be seen that due in the join domain between partition 2 and matrix 1 in A there are continual layer gold,
The hydrogen permeation pathway of seal chamber can be blocked, completely so as to improve the accuracy of measurement.
With the outside of partition setting Gold plated Layer with according to the utility model partition inside setting Gold plated Layer for compared with
Object carry out actual test it can be found that the resistance hydrogen effect of measuring cell according to the present utility model is set on the outside of partition
The resistance hydrogen effect for setting Gold plated Layer is almost consistent.
As a result, according to the utility model, since the extension area of impermeable layer at least covers the position of the medial surface 21 of partition 2
Ingredient in the part of the join domain in seal chamber 3 and between partition 2 and matrix 2, in the medium to be measured in 2 outside of partition
Or element cannot be penetrated into seal chamber 3 by partition 2.Therefore, it can be improved the accuracy of measurement.And due to Gold plated Layer position
In the medial surface 21 of partition 2, not will receive the influence of medium to be measured, thus improve measuring cell antiwear property and
Service life.Further, since wholly or partially gold-plated, the Ke Yishi in unilateral side directly can be carried out to sealing partition before assembly
It now transports safely and low stock, saves a large amount of transport and maintenance cost.Moreover, because impermeable layer can only cover every
Piece can greatly reduce Material Cost compared with the gold-plated solution in the aforementioned outside in partition 2.
It is alternatively possible to by TIG weldering (as indicated by the B in Fig. 4) or other modes that are fixedly connected by the week of partition 2
Edge is fixed on matrix 1, then so that partition 2 is further connected with matrix 1 by electric-resistance seam-welding or other feasible connection types
(as shown by the region C in Fig. 4).Both may be implemented as a result, it is stable between partition 2 and matrix 1 be fixedly connected, also block
Hydrogen permeation pathway that may be present.In this case, the welding region of electric-resistance seam-welding is located at the diameter of the welding region of TIG weldering
Inwardly.Also, coverage area of the Gold plated Layer 4 on the medial surface 21 of partition 2 can only protrude beyond the welding of electric-resistance seam-welding
Region.
Gold plated Layer 4 can be set on the medial surface 21 of partition 2 by the conventional process such as electroplating technology or Vacuum Deposition mode.
The thickness of Gold plated Layer 4 is advisable with not influencing measurement accuracy, for example, the thickness of Gold plated Layer can be less than or equal to 10 microns, such as is plated
The thickness of layer gold can be 5 microns.Relative to solving to apply on the lateral surface 22 of partition 2 by way of increasing thickness of coating
Add Gold plated Layer the problem that technical solution, measuring cell according to the present utility model and measuring device equally have survey
Measure the advantage of accuracy and cost etc..
Partition 2 can be made of the material identical or different with the material of matrix 1.Optionally, partition 2 and matrix 1 can be with
It is made of stainless steel material.
By analysis above it is understood that measuring cell according to the present utility model and measuring device improve survey
The accuracy of amount, improves the service life of component, and reduces manufacture and maintenance cost.
Although the various embodiments of the utility model have already been described in detail herein, it should be appreciated that, the utility model
It is not limited to the specific embodiment be described in detail and shown here, in the connotation and range without departing from the utility model
In the case where may be effected by one skilled in the art other modifications and remodeling.All these modifications and remodeling each fall within this reality
With in novel range.
Claims (10)
1. a kind of measuring cell, it is characterised in that including：
Matrix (1)；
Partition (2), the partition (2) are fixedly connected to described matrix (1), and in the partition (2) and described matrix (1)
Between define seal chamber (3)；And
Impermeable layer, the impermeable layer be arranged in the partition (2) on the medial surface (21) of the seal chamber (3),
Also, the impermeable layer be at least extended continuously on the medial surface (21) of the partition (2) more than the partition (2) with
The join domain of described matrix (1).
2. measuring cell according to claim 1, which is characterized in that the partition (2) is fixedly connected by electric-resistance seam-welding
It is connected to described matrix (1).
3. measuring cell according to claim 1, which is characterized in that the partition (2) is connected by TIG weldering and electric-resistance seam-welding
It is connected to described matrix (1), also, the welding region of the electric-resistance seam-welding is located at the radially inner side of the welding region of TIG weldering.
4. measuring cell according to claim 1, which is characterized in that the impermeable layer extends over the partition (2)
Entire medial surface (21).
5. measuring cell according to claim 1, which is characterized in that painting of the impermeable layer on the partition (2)
Thickness is covered less than or equal to 10 microns.
6. measuring cell according to claim 1, which is characterized in that be formed on the partition (2) one or more
Annular crimp portion (23).
7. measuring cell according to claim 1, which is characterized in that corresponding to the partition (2) in described matrix (1)
Part is provided with concave portion (15).
8. measuring cell according to claim 1, which is characterized in that described matrix (1) is provided with for the sealing
The fluid channel (13) of filling fluid in chamber (3).
9. measuring cell described in any one of -8 according to claim 1, which is characterized in that the impermeable layer is is plated in
State the Gold plated Layer (4) on the medial surface (21) of partition (2).
10. a kind of measuring device, which is characterized in that the measuring device includes according to claim 1 described in any one of -9
Measuring cell.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820741719.4U CN208140155U (en) | 2018-05-17 | 2018-05-17 | Measuring cell and measuring device including such measuring cell |
| PCT/US2019/032824 WO2019222598A1 (en) | 2018-05-17 | 2019-05-17 | Measuring element and measuring device comprising the same |
| US16/616,736 US11371899B2 (en) | 2018-05-17 | 2019-05-17 | Measuring element with an extended permeation resistant layer |
| EP19728282.5A EP3769063B1 (en) | 2018-05-17 | 2019-05-17 | Measuring element and measuring device comprising the same |
| CA3099745A CA3099745A1 (en) | 2018-05-17 | 2019-05-17 | Measuring element and measuring device comprising the same |
| JP2020555817A JP2021517969A (en) | 2018-05-17 | 2019-05-17 | Measuring element and measuring device equipped with it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820741719.4U CN208140155U (en) | 2018-05-17 | 2018-05-17 | Measuring cell and measuring device including such measuring cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208140155U true CN208140155U (en) | 2018-11-23 |
Family
ID=64313833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820741719.4U Active CN208140155U (en) | 2018-05-17 | 2018-05-17 | Measuring cell and measuring device including such measuring cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208140155U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110501033A (en) * | 2018-05-17 | 2019-11-26 | 艾默生(北京)仪表有限公司 | Measuring cell and measuring device including such measuring cell |
-
2018
- 2018-05-17 CN CN201820741719.4U patent/CN208140155U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110501033A (en) * | 2018-05-17 | 2019-11-26 | 艾默生(北京)仪表有限公司 | Measuring cell and measuring device including such measuring cell |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203069314U (en) | Co-planar differential pressure sensor module and pressure sensor module applied to sea bottom | |
| CN208140155U (en) | Measuring cell and measuring device including such measuring cell | |
| CA2953804C (en) | Process pressure transmitter with seal having diamond like carbon coating | |
| CN107923806A (en) | Pressure sensor apparatus and the measurement translator for process instrument equipment with the pressure sensor apparatus | |
| CN101124426A (en) | Arrangement or provision of a sensor or probe for the measuring of a condition in a pipe or the like | |
| DE102005035931B4 (en) | Hydraulic diaphragm seal and pressure transducer with hydraulic diaphragm seal | |
| CN110501033A (en) | Measuring cell and measuring device including such measuring cell | |
| US11371899B2 (en) | Measuring element with an extended permeation resistant layer | |
| RU2649042C1 (en) | Corrosive resistant pressure module for process fluid pressure transducer | |
| CN108760137A (en) | A kind of teletransmission component and the teletransmission pressure transmitter including the teletransmission component | |
| RU2773417C1 (en) | Measuring element and measuring apparatus containing said element | |
| US20090293591A1 (en) | Collecting line for monitoring and locating leakages and device having the collecting line | |
| CN217758673U (en) | Soaking-free pore water pressure gauge | |
| CN208621241U (en) | A kind of corrosion resistant type pressure sensor, circuit board and electronic device | |
| DE102019132867A1 (en) | Method for manufacturing a differential pressure transducer | |
| Axelson et al. | Aseptic integrity and microhole determination of packages by electrolytic conductance measurement | |
| CN105486614B (en) | Manufacture method and optical sample pond that liquid insoluble granule detection means examines block | |
| CN111157166B (en) | Liquid chromatography pump pressure measuring device and pump head | |
| CN108709682A (en) | A kind of corrosion resistant type pressure sensor, circuit board and electronic device | |
| JP2013257225A (en) | Pressure transmitter | |
| CN208188036U (en) | A kind of electrochemical sensor | |
| CN203287056U (en) | Electrode externally inserted fluid measuring tube | |
| CN107655621A (en) | A kind of pressure sensor waterproof case | |
| CN212963799U (en) | Device for measuring stress change of soil body after grouting | |
| EP0073082B1 (en) | Method for manufacturing a measuring capillary |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |