WO2016096023A1 - Messanordnung - Google Patents
Messanordnung Download PDFInfo
- Publication number
- WO2016096023A1 WO2016096023A1 PCT/EP2014/078576 EP2014078576W WO2016096023A1 WO 2016096023 A1 WO2016096023 A1 WO 2016096023A1 EP 2014078576 W EP2014078576 W EP 2014078576W WO 2016096023 A1 WO2016096023 A1 WO 2016096023A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- arrangement
- measuring
- receiving
- plastic
- fastening
- Prior art date
Links
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
- G01L19/14—Housings
- G01L19/142—Multiple part housings
- G01L19/143—Two part housings
Definitions
- the present invention relates to a measuring arrangement according to the preamble of patent claim 1.
- various measurement devices in particular pressure measurement devices having a Befest Trentsein ⁇ direction to hold the measuring arrangement, an electrode disposed on the buildin ⁇ actuating device receiving assembly and an at least partially within the receiving assembly angeord ⁇ Neten measuring cell are known, wherein the measuring cell includes at least one hand to a process environment towards accessible measuring section has ⁇ and is supported in the receiving arrangement by means of a Spanneinrich ⁇ device.
- Such measuring arrangements are used for example for measuring pressure, and then a pressure measurement cell is arranged with its haw ⁇ sitiven membrane in such a way in the receiving arrangement is that this process pressure acting in one of the process environment is pro- indirectly or directly exposed.
- Pressure measuring cell is sealingly arranged within therawan ⁇ order, which can be accomplished, for example, in a cylindrically shaped pressure measuring cell by end face and / or umlau ⁇ fend arranged seals, in particular O-rings.
- the pressure measuring ⁇ cell is the front side in the axial direction, that is biased toward the process environment out in the recording arrangement held.
- a sol ⁇ che bias can for example via a corresponding trained clamping device, such as a clamping screw ⁇ can be achieved.
- Stainless steel is used in particular because of its good workability and its excellent natural sheep ⁇ th in terms of corrosion and service life.
- drawings net is characterized in that the fastening device Wenig ⁇ least partially stabilized shalls partly made of metal, plastic and the receiving structure we.
- the fastening device is at least partially made of plastic and the receiving arrangement consists partly of metal on the one hand positive properties of the plastic, namely low weight, and on the other hand positive properties of metal, namely high stability, Abra ⁇ sionsfesttechnik and stability combined, and thus a measuring arrangement with a hybrid housing with a low ⁇ ⁇ weight and on the other hand good mechanical and metrological properties are provided.
- the receiving arrangement consists of a combination of plastic and metal, wherein according to a be ⁇ preferred embodiment, the receiving assembly has at least ei ⁇ ne metallic sleeve, which is at least partially encapsulated in plastic.
- the embodiment of the recording arrangement with a metallic sleeve which is encapsulated with plastic is at least partially sert a plastic part with a metallic so-called home, that is an at least partially created a ⁇ bedded metal part into the plastic.
- a combined plastic-metal part has on the one hand in the region of metalli ⁇ rule inserts the positive properties of the metal, where at ⁇ can be made a good connection to the other plastic parts, as well as a further stabilizing and molding by the extrusion coating with plastic.
- the metallic sleeve can for example have a radially inwardly directed circumferential collar, which serves as a repository for arranged within the receiving assembly measuring cell, for example, a pressure measuring cell or a seal placed between the measuring cell and the umlau ⁇ fenden collar. Molded, means in the context of the present Appli ⁇ dung that an object is in sections on its surface in direct contact with the plastics material at least. A stable connection can be achieved, in particular by the provision of grooves or undercuts.
- the Freanord ⁇ voltage and the fastening device may be integrally formed, which may for example take place in that the
- Pressure measuring cell is arranged and fixed within the metallic sleeve and then completes the receiving arrangement by molding the sleeve and the Befest Trentseinrich ⁇ device is molded integrally. In this way, a very light component can be provided with the possibilities offered by plastic injection molding also relatively complex external shape design with Weni ⁇ gen steps.
- the fastening device can be injection-molded onto the receiving arrangement.
- the receiving arrangement would be made with or without the pressure measuring cell arranged therein and, subsequently , the fastening device is molded onto the receiving arrangement accordingly.
- the receiving arrangement and the fastening device are connected to one another by means of a dacasseinrich ⁇ device.
- a connecting means can be formed for example as a thread, snap connection or Bajo ⁇ nice compound.
- the fastening arrangement and the receiving arrangement can each be ver ⁇ connected, in particular glued or welded together also cohesively.
- a material connection for example a gluing or welding may be particularly useful with a modular construction, to fix a dung device manufactured by means of a connection between connectscutan ⁇ order and permanently fastening device or save it entirely.
- the on ⁇ acquisition assembly and the fixing means are only integrally connected to each other, which means in particular in gluing or welding in a very convenient, durable, in particular self-sealing connection between the two components.
- the connecting device can also be formed integrally with the clamping device.
- the Be ⁇ fastening arrangement could for example be screwed by a thread into the sacred ⁇ order and at the same bias which is arranged in in ⁇ Neren of the recording arrangement the pressure measuring cell alcardi in AXI, so that in this embodiment, by a corresponding design of the dacaseinrich ⁇ tung the clamping device can be saved.
- a bias voltage of the pressure measuring cell, a compression spring between the clamping means and the pressure measuring cell ⁇ at least one biasing means, for example, be located.
- a reduction of the necessary components can be welded into the recording arrangement or glued the measuring cell. Such welding or gluing preferably takes place under prestress in the axial direction. It can be saved in this way the otherwise to be provided tensioning device, whereby a further weight reduction he ⁇ allows.
- a particularly simple embodiment can be achieved, the receiving arrangement and / or the fastening device
- the clamping device is formed of fiber-reinforced plastic.
- fiber-reinforced synthetic material ⁇ increased FES ACTION the plastic is ensured in addition to the weight savings, so that the so gebil ⁇ finished measuring arrangement continues to be universally applicable.
- the receiving assembly and / or the Be ⁇ fastening means and / or the tensioning device made of synthetic ⁇ material and is provided with an insert of metal. By such a metal insert additional forces can be absorbed.
- 2 shows a section through a measurement arrangement with a Be ⁇ fastening means made of plastic and an up ⁇ acquisition arrangement of metal
- Figure 3 is a perspective view of the measuring arrangement
- Figure 4 shows an alternative embodiment of the measuring arrangement
- FIG. 1 shows a section through a measuring arrangement 1 according to the prior art, in which a measuring cell 7, in the present case a pressure measuring cell, is accommodated in a housing consisting of a fastening device 2 and a receiving arrangement 5 arranged on the fastening device 2.
- the buildin ⁇ actuating device 2 and the receiving assembly 5 are designed ⁇ forms in front ⁇ lying embodiment, one piece of stainless steel, wherein the receiving arrangement 5 is substantially sleeve-shaped design and the attachment device 2 is molded in the form of a flange at the back of it.
- the pressure measuring cell 7 is arranged on the front side and is biased in the axial direction with a clamping device 11 arranged on the rear side of the pressure measuring cell 7.
- a radially inwardly extending circumferential collar 15 is arranged on ⁇ , which serves as a repository for a front seal 20 which is disposed between a front side of the pressure measuring cell 7 and the circumferential collar 15.
- the front seal 20 is formed in the present embodiment as an O-ring, due to the bias of the pressure measuring cell 7 in the axial direction ⁇ between the circumferential collar 15 and the pressure measuring cell 7 is sealingly clamped.
- the pressure measuring cell 7 comprises in the present embodiment, a front side is disposed ⁇ measurement section 9, which is designed as a measuring diaphragm, on. Via this measuring diaphragm 9, the pressure measuring cell 7 is coupled to a process environment I and subjected to the pressure to be measured.
- the receiving assembly 5 is formed stepwise, wherein in the region of one of these stages laterally of the pressure measuring cell 7, a first circumferential seal 21, which is also formed as an O-ring sitting.
- a first circumferential seal 21 which is also formed as an O-ring sitting.
- an insulating sleeve 22 which encompasses the pressure measuring cell 7 in the circumferential direction and which extends in the radial direction in the region of an inwardly jumping step of the pressure measuring cell 7 is provided.
- This insulating sleeve 22 embeds the pressure measuring cell 7 circumferentially and can ⁇ example, of plastic, in particular thermoplastic material such as polypropylene, polyamide, polyoxymethylene or a high-performance plastic ⁇ for example, fiber reinforced plastic, or be formed of polyetheretherketone.
- the pressure measuring cell 7 is mounted electrically insulated.
- the clamping device 11 which is formed in the present,sbei ⁇ game as a clamping screw, sits on the back of the pressure measuring cell 7 and clamps them in the axial direction in the receiving arrangement 5 a.
- the clamping screw 11 is in the lying embodiment forms with an external thread 17 ⁇ , which engages in an internal thread of the receiving assembly 5 ⁇ .
- the back is, as already mentioned, the Befest Trentseinrich ⁇ device 2 integrally formed on the receiving structure.
- the Befest Trent ⁇ device 2 is formed with a circumferential groove into which engage a ge ⁇ suitable receptacle and thus the measuring assembly 1, for example, on an electronics housing can support.
- the Be ⁇ fastening device 2 can also be designed for example as a screw or clamp flange or any other Be ⁇ fastening device.
- ⁇ from an anti-twist is arranged in the form of a orien ⁇ oriented in the axial direction of the pressed-in pin to the fastening means 2 further. In this way, a specific orientation of the measuring system can be ensured relative to ande ren ⁇ components.
- FIG. 2 shows a section through an exemplary embodiment of a measuring arrangement 1 according to the invention, wherein the exemplary embodiment illustrated in FIG. 2 differs from that of FIG. 1 in that the measuring arrangement has a significantly lower weight.
- the measuring cell 7 is arranged on the front side in the receiving arrangement 5 of the measuring arrangement 1, wherein a bearing takes place via the circumferential collar 15 and a seal by the front seal 20 and the first circumferential seal 21.
- the weight saving in the present embodiment re ⁇ consulted the fact that the clamping device 11 and the fastening Supply device 2 are integrally formed of plastic. In this way it is achieved that on the one hand in the region of the measuring cell 7, ie in front orientation by the receiving assembly 5, which is made, for example made of stainless steel, a high stability, abrasion resistance and inertness is achieved while in a rear area the use of the KunststoffStoffmaterials significant Ge ⁇ weight savings can be achieved.
- the Befest Trentauersein- device 2 which is present in the form of a flange, and the clamping device 11 formed integrally and bil ⁇ a connecting means 13 between the fastening ⁇ means 2 and the receiver assembly 5 from.
- the connecting device 13 is designed as a screw connection, so that the Befest Trentsein ⁇ direction 2 can be screwed into the receiving assembly 5 in a corresponding internal thread of the receiving assembly 5.
- a second circumferential seal 23 is provided for sealing this screw connection, which is arranged on the clamping device 11 on the front side in a circumferential groove.
- the fastening device 2 can also be connected, for example via a snap connection, a bayonet connection or another detachable connection with the receiving arrangement 5.
- welded connections or adhesive connections between the receiving arrangement 5 and the fastening device 2 would also be conceivable, with ultrasound welding in the case of a plastic-plastic material transition, for example, being conceivable as a possible connection technique in the case of a receiving arrangement 5 made at least partially of plastic. Due to the design of the fastening device 2 made of plastic, this can be made as an injection molded part in approximately beechi ⁇ ger geometric shape. This has in ⁇ play, the advantage that the separately to be used in the prior art anti-rotation device may be integrally formed on the fastening ⁇ device 2, and thus can acquire a more Re ⁇ production of the components used.
- FIG 3 shows a perspective view of the measurement arrangement 1 in Figure 2, wherein in this view both the integ ral ⁇ integrally formed anti-rotation device 26 as the intended also to its mountings ⁇ restriction device 2 fixing lugs 28 are special ⁇ DERS clearly seen.
- Figure 4 such an alternative embodiment of
- Measuring arrangement 1 shown wherein between the Befest Trentsein ⁇ direction 2 and the receiving assembly 5, a circumferential adhesive ⁇ connection is provided. Since the adhesive connection is media-tight, additional seals in the region of the connection can be dispensed with.
- a further biasing means 12 which is designed as a compression spring against ⁇ lying between the clamping ⁇ n driven 11 which is combinatorial ⁇ ned with the connecting means 13 and arranged the pressure measuring cell. 7
- a training of individual components wholly or partly made of plastic for example, the receiving assembly and / or the mounting arrangement and / or the clamping device can be used to increase the stability of the plastic used on fiber-reinforced plastics.
- be ⁇ is the possibility that for further increasing the Stabili ⁇ ty, in particular with respect to a continuous load, the ent ⁇ speaking components are partly made of metal.
- the receiving arrangement and / or the fastening device and / or the clamping device can be made of plastic and verse with an insert of metal hen ⁇ hen.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2014/078576 WO2016096023A1 (de) | 2014-12-18 | 2014-12-18 | Messanordnung |
DE112014007261.3T DE112014007261A5 (de) | 2014-12-18 | 2014-12-18 | Messanordnung |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2014/078576 WO2016096023A1 (de) | 2014-12-18 | 2014-12-18 | Messanordnung |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016096023A1 true WO2016096023A1 (de) | 2016-06-23 |
Family
ID=52103133
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2014/078576 WO2016096023A1 (de) | 2014-12-18 | 2014-12-18 | Messanordnung |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE112014007261A5 (de) |
WO (1) | WO2016096023A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108151920B (zh) * | 2017-12-29 | 2020-04-21 | 山东大学 | 一种用于测量隧道围岩压力的压力盒固定装置及施工方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0403256A2 (de) * | 1989-06-13 | 1990-12-19 | Texas Instruments Incorporated | Fertigung einer O-Ring/Staudichtung für Hochdruckwandler |
EP0751385A2 (de) * | 1995-06-27 | 1997-01-02 | Delco Electronics Corporation | Druckwandler mit reduzierter Hysterese und erhöhtem elektrischen Wirkungsgrad bei niedrigen Drücken |
DE19723615A1 (de) * | 1997-06-05 | 1998-12-10 | Trw Automotive Electron & Comp | Drucksensoreinheit, insbesondere für die Kraftfahrzeugtechnik |
DE102012222089A1 (de) * | 2012-12-03 | 2014-06-05 | Robert Bosch Gmbh | Drucksensormodul |
-
2014
- 2014-12-18 WO PCT/EP2014/078576 patent/WO2016096023A1/de active Application Filing
- 2014-12-18 DE DE112014007261.3T patent/DE112014007261A5/de not_active Ceased
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0403256A2 (de) * | 1989-06-13 | 1990-12-19 | Texas Instruments Incorporated | Fertigung einer O-Ring/Staudichtung für Hochdruckwandler |
EP0751385A2 (de) * | 1995-06-27 | 1997-01-02 | Delco Electronics Corporation | Druckwandler mit reduzierter Hysterese und erhöhtem elektrischen Wirkungsgrad bei niedrigen Drücken |
DE19723615A1 (de) * | 1997-06-05 | 1998-12-10 | Trw Automotive Electron & Comp | Drucksensoreinheit, insbesondere für die Kraftfahrzeugtechnik |
DE102012222089A1 (de) * | 2012-12-03 | 2014-06-05 | Robert Bosch Gmbh | Drucksensormodul |
Also Published As
Publication number | Publication date |
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DE112014007261A5 (de) | 2017-08-31 |
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