CN114061830A - Instrument check joint and pressure check platform - Google Patents
Instrument check joint and pressure check platform Download PDFInfo
- Publication number
- CN114061830A CN114061830A CN202111211999.0A CN202111211999A CN114061830A CN 114061830 A CN114061830 A CN 114061830A CN 202111211999 A CN202111211999 A CN 202111211999A CN 114061830 A CN114061830 A CN 114061830A
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- Prior art keywords
- flange
- connection end
- threaded
- pressure gauge
- verification
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- 238000012795 verification Methods 0.000 claims abstract description 28
- 238000004164 analytical calibration Methods 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 2
- 125000006850 spacer group Chemical group 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 6
- 238000001514 detection method Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 6
- 238000012824 chemical production Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L27/00—Testing or calibrating of apparatus for measuring fluid pressure
- G01L27/002—Calibrating, i.e. establishing true relation between transducer output value and value to be measured, zeroing, linearising or span error determination
- G01L27/005—Apparatus for calibrating pressure sensors
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention relates to the technical field of instrument calibration equipment, and discloses an instrument calibration joint and a pressure calibration platform, wherein the instrument calibration joint comprises a flange connecting end (1) and a threaded connecting end (2), the flange connecting end can be connected with a flange structure of a diaphragm type pressure gauge (0), and the middle part of the flange connecting end is provided with a through center hole (101); the threaded connection end is provided with a through hole (201) which penetrates through the threaded connection end along the axial direction and is communicated with the center hole, one end of the threaded connection end is connected with the flange connection end, and the other end of the threaded connection end can be connected with a threaded port of the pressure calibration device. The invention solves the technical problems that the diaphragm type pressure gauge is disposable from installation and use to waste, the production cost is increased, and the requirements of carrying out regular verification and non-verification on the pressure gauge cannot be met because the connecting port of the diaphragm type pressure gauge is of a flange structure and the structure cannot be matched and connected with a threaded port of the existing detection device for verification.
Description
Technical Field
The invention relates to the technical field of instrument calibration equipment, in particular to an instrument calibration joint and a pressure calibration platform.
Background
The electrothermal chemical production process is complex, and the media participating in the production have various components, and most of the electrothermal chemical production process has the characteristics of high temperature, corrosivity, flammability, explosiveness, easiness in crystallization and the like. In order to ensure that the pressure of the pipeline for conveying the medium is safely and chronically acquired and monitored, a diaphragm type pressure gauge is usually selected. But because diaphragm type manometer connection port is the flange structure, this structure can't carry out the accordant connection with current detection device's screw thread port in order to carry out the check-up, cause diaphragm type manometer to use from the installation until reporting to the police and useless all disposable, and diaphragm type manometer is more expensive than ordinary manometer, disposable greatly increased manufacturing cost, lead to the electric heat chemical production line can not satisfy the requirement that the regular verification was carried out to the manometer to the national measurement system, and simultaneously, the unable check-up of diaphragm meter, the degree of accuracy to the measurement has lost control.
Disclosure of Invention
The invention aims to overcome the technical problems that in the prior art, because a connecting port of a diaphragm type pressure gauge is of a flange structure, the structure cannot be matched and connected with a threaded port of an existing detection device for verification, the diaphragm type pressure gauge is disposable from installation and use to waste, the production cost is increased, and the requirements of carrying out regular verification and incapability of verifying on the pressure gauge cannot be met.
To achieve the above object, an aspect of the present invention provides a meter calibration joint.
The instrument calibration joint comprises a flange connecting end and a threaded connecting end, the flange connecting end can be connected with a flange structure of the diaphragm type pressure gauge, and a through center hole is formed in the middle of the flange connecting end; the threaded connection end is provided with a through hole which penetrates through the threaded connection end along the axial direction of the threaded connection end and is communicated with the central hole, one end of the threaded connection end is connected with the flange connection end, and the other end of the threaded connection end can be connected with a threaded port of the pressure calibration device.
The instrument check joint provided by the invention realizes the aim of butting the diaphragm pressure gauge and the pressure check device by arranging the flange connecting end which can be connected with the flange structure of the diaphragm pressure gauge and arranging the threaded connecting end which can be connected with the threaded port of the pressure check device on the flange connecting end, thereby realizing the aim of checking the diaphragm pressure gauge, and further solving the technical problems that the diaphragm pressure gauge is disposable from installation and use to waste due to the fact that the connecting port of the diaphragm pressure gauge is of the flange structure and cannot be matched and connected with the threaded port of the existing detection device for checking, so that the yield is increased, and the requirements of carrying out regular verification and non-verification on the pressure gauge cannot be met.
Preferably, a sealing ring for sealing connection between the flange connecting end and the flange structure is arranged on the periphery of the central hole of the flange connecting end.
Preferably, the sealing ring is provided in plurality.
Preferably, the sealing ring is made of high-temperature resistant rubber.
Preferably, the threaded end is welded to the flanged end.
Preferably, the flange connecting end is provided with a screw hole corresponding to the mounting hole of the flange structure.
Preferably, the flange connecting end is used for aligning and bolting the screw hole and the mounting hole of the flange structure through a bolt and a gasket.
Preferably, the threaded end is a cylinder.
Preferably, the threaded end is built into a threaded port of the pressure verification device.
A second aspect of the invention provides a pressure verification platform
The pressure calibration platform comprises a diaphragm type pressure gauge, a pressure calibration device and any one of the above instrument calibration joints, wherein the instrument calibration joint is connected with the diaphragm type pressure gauge through the flange connecting end and is connected with a threaded port of the pressure calibration device through the threaded connecting end so as to calibrate the diaphragm type pressure gauge through the pressure calibration device.
Drawings
FIG. 1 is a schematic view of a meter verification connection of the present invention in actual use in a particular embodiment;
FIG. 2 is a schematic view of the bottom structure of the meter verification connection of FIG. 1;
fig. 3 is a schematic perspective view of the meter verification connector of fig. 1.
Description of the reference numerals
0. A diaphragm type pressure gauge; 1. a flange connection end; 101. a central bore; 2. a threaded connection end; 201. a through hole; 3. a seal ring; 4. a screw hole; 5. a threaded port.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances in order to facilitate the description of the embodiments of the invention herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In the present invention, the terms "upper", "inner", "middle", and "radial" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the invention and its embodiments and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present invention can be understood by those skilled in the art as appropriate.
In addition, the term "plurality" shall mean two as well as more than two.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1 to 3, the present invention provides an instrument calibration joint, which includes a flange connection end 1 and a thread connection end 2, wherein the flange connection end 1 can be connected with a flange structure of a diaphragm pressure gauge 0, and a central hole 101 is formed in the middle of the flange connection end 1; the threaded connection end 2 is provided with a through hole 201 which penetrates through the threaded connection end along the axial direction and is communicated with the central hole 101, one end of the threaded connection end 2 is connected with the flange connection end 1, and the other end of the threaded connection end can be connected with a threaded port 5 of the pressure calibration device.
The instrument check joint provided by the invention realizes the aim of butting the diaphragm pressure gauge and the pressure check device by arranging the flange connecting end which can be connected with the flange structure of the diaphragm pressure gauge and arranging the threaded connecting end which can be connected with the threaded port of the pressure check device on the flange connecting end, thereby realizing the aim of checking the diaphragm pressure gauge, and further solving the technical problems that the diaphragm pressure gauge is disposable from installation and use to waste due to the fact that the connecting port of the diaphragm pressure gauge is of the flange structure and cannot be matched and connected with the threaded port of the existing detection device for checking, so that the yield is increased, and the requirements of carrying out regular verification and non-verification on the pressure gauge cannot be met.
In an optional embodiment of the present invention, a sealing ring 3 for sealing connection between the flange connection end 1 and the flange structure is disposed on the periphery of the central hole 101 of the flange connection end 1, and the arrangement of the sealing ring 3 can effectively improve the air tightness of the connection between the flange connection end 1 and the flange structure, thereby avoiding occurrence of situations that accurate digital pressure measurement, pressure verification and pressure correction cannot be performed on the diaphragm pressure gauge 0 due to air leakage in structural connection. In order to improve the effect of air tightness of the sealing rings 3, in a further alternative embodiment of the present invention, the number of the sealing rings 3 is multiple, wherein the multiple sealing rings 3 are sequentially sleeved on the connecting surface of the flange connecting end 1 and the flange structure according to different sizes. In a further alternative embodiment of the present invention, the sealing ring 3 may be made of a high temperature resistant rubber material to ensure the stability of the sealing ring 3 after the integral installation is completed to maintain the air tightness of the integral structure.
In an alternative embodiment of the invention, the threaded end 2 is threadedly connected to the flange connection end 1. In another optional implementation of the present invention, in order to avoid the loosening of the flange connection end 1 and the threaded connection end 2 caused by the pressure applied during the operation, and thus the occurrence of the operation data condition, it is preferable that the threaded connection end 2 is welded to the flange connection end 1. In other embodiments of the present invention, the flange connection end 1 and the threaded connection end 2 are integrally injection molded.
In the optional embodiment of the present invention, the flange connection end 1 is provided with screw holes 4 corresponding to the mounting holes of the flange structure, and in the preferred embodiment of the present invention, the number of the screw holes 4 is the same as the number of the mounting holes, so that the flange connection end 1 and the flange structure of the diaphragm type pressure gauge 0 can be conveniently bolted by bolts, and pressure verification can be conveniently performed. In other embodiments of the present invention, in order to facilitate the flange connection end 1 to have the same size, the flange structures of the diaphragm pressure gauge 0 having different numbers of mounting holes are bolted, a plurality of screw holes 4 are uniformly distributed on the flange connection end 1 along the radial direction of the contact surface with the flange structure, and the number of the screw holes 4 is greater than the number of the mounting holes of the flange structure, so as to be capable of being butt-mounted with the flange structures having different numbers of mounting holes.
In a further alternative embodiment of the present invention, in order to improve the tightness of the connection between the flange connection end 1 and the flange structure, the flange connection end 1 is bolted by aligning the bolt hole with the mounting hole of the flange structure through bolts and gaskets. The gasket is arranged, so that the stress of the bolt can be effectively dispersed, the possibility that the bolt is loosened due to stress is reduced, and the tightness of structural connection between the flange connecting end 1 and the flange is improved.
In an alternative embodiment of the present invention, the threaded connection end 2 is a cylindrical body, and the threaded connection end 2 is built into a threaded port 5 of the pressure verification device. So that when injecting pressure medium into through-hole 201 and central hole 101, threaded port 5 of the surplus pressure calibration equipment of threaded connection end 2 can guarantee to have good gas tightness, conveniently carries out pressure calibration.
The specific application of the instrument check joint provided by the invention in practical application is as follows:
selecting a flange connecting end 1 with the same specification according to the specification of a flange of a diaphragm type pressure gauge 0 to be checked;
a sealing ring 3 is arranged around a central hole 101 of the flange connecting end 1, and one end of a threaded connecting end 2 is welded below the central hole 101;
connecting the other end of the welded threaded connecting end 2 with a pressure calibration device;
lining a gasket on a flange plate of the flange connecting end 1, pressing a flange structure of the calibrated diaphragm type pressure gauge 0 on the gasket, aligning a screw hole 4 on the flange connecting end 1 with a mounting hole arranged on the flange structure, simultaneously aligning a dial plate for observation, and then fastening and pressing the gasket by using bolts to ensure no leakage;
and (5) installing the diaphragm type pressure gauge 0 to be verified, and carrying out verification according to the verification steps of the common gauge.
It should be noted that the instrument calibration joint provided by the invention is simple in structure, and based on the fact that when the diaphragm type pressure gauge 0 is connected, the flange connecting end 1 matched with the flange structure needs to be selected, at this time, the instrument calibration joint can be obtained by dismantling and modifying the discarded flange structure of the diaphragm type pressure gauge 0 with the same specification, so that the purchase cost of a calibration instrument can be reduced.
The invention provides a pressure checking platform.
The pressure calibration platform comprises a diaphragm type pressure gauge 0, a pressure calibration device and any one of the pressure calibration device, wherein the instrument calibration connector is connected with the diaphragm type pressure gauge 0 through a flange connecting end 1 and is connected with a threaded port 5 of the pressure calibration device through a threaded connecting end 2, so that the diaphragm type pressure gauge 0 is calibrated through the pressure calibration device.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The instrument calibration joint is characterized by comprising a flange connecting end (1) and a threaded connecting end (2), wherein the flange connecting end (1) can be connected with a flange structure of a diaphragm pressure gauge (0), and a through center hole (101) is formed in the middle of the flange connecting end (1); the threaded connection end (2) is provided with a through hole (201) which penetrates through the threaded connection end along the axial direction of the threaded connection end and is communicated with the center hole (101), one end of the threaded connection end (2) is connected with the flange connection end (1), and the other end of the threaded connection end can be connected with a threaded port (5) of the pressure calibration device.
2. The meter calibration joint according to claim 1, wherein the periphery of the central hole (101) of the flange connection end (1) is provided with a sealing ring (3) for sealing the connection of the flange connection end (1) with the flange structure.
3. The meter check joint according to claim 2, wherein the sealing ring (3) is plural.
4. The meter check connector according to claim 2, characterized in that the sealing ring (3) is made of a high temperature resistant rubber material.
5. The meter check joint according to claim 1, wherein the threaded connection end (2) is welded to the flanged connection end (1).
6. The meter calibration joint according to claim 1, wherein said flanged end (1) is provided with a screw hole (4) corresponding to a mounting hole of said flange structure.
7. The meter calibration joint according to claim 6 wherein said flanged connection end (1) is bolted in alignment with said screw hole (4) and said mounting hole of said flange structure by means of bolts and spacers.
8. The meter check joint according to claim 1, wherein the threaded end (2) is a cylinder.
9. The meter verification joint of claim 1, wherein the threaded connection end (2) is built into a threaded port (5) of the pressure verification device.
10. A pressure verification platform comprising a diaphragm pressure gauge (0), a pressure verification device and a meter verification connection according to any one of claims 1 to 9, said meter verification connection being connected to said diaphragm pressure gauge (0) via said flange connection end (1) and to a threaded port (5) of said pressure verification device via said threaded connection end (2) for verifying said diaphragm pressure gauge (0) by said pressure verification device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111211999.0A CN114061830A (en) | 2021-10-18 | 2021-10-18 | Instrument check joint and pressure check platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111211999.0A CN114061830A (en) | 2021-10-18 | 2021-10-18 | Instrument check joint and pressure check platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114061830A true CN114061830A (en) | 2022-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111211999.0A Pending CN114061830A (en) | 2021-10-18 | 2021-10-18 | Instrument check joint and pressure check platform |
Country Status (1)
| Country | Link |
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| CN (1) | CN114061830A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997022855A1 (en) * | 1995-12-20 | 1997-06-26 | The Dow Chemical Company | System for measuring differential pressure, flow, and level |
| CN203163934U (en) * | 2013-04-22 | 2013-08-28 | 大唐鲁北发电有限责任公司 | Verifying connecting device of diaphragm pressure instrument |
| CN206563633U (en) * | 2017-02-20 | 2017-10-17 | 神华集团有限责任公司 | Flange plate structure for carrying out pressure checking to manometer |
| CN107870062A (en) * | 2016-09-26 | 2018-04-03 | 中电华元核电工程技术有限公司 | A kind of used in nuclear power station diaphragm type instrument calibration device |
| CN208579864U (en) * | 2018-07-16 | 2019-03-05 | 中石化南京工程有限公司 | A kind of flange pressure table calibration equipment |
| CN208847402U (en) * | 2018-09-12 | 2019-05-10 | 中国石油天然气第七建设有限公司 | Multifunction instrument checking table |
| CN210180471U (en) * | 2019-07-30 | 2020-03-24 | 青海盐湖工业股份有限公司 | Connecting piece for checking instrument |
| CN210981635U (en) * | 2019-09-26 | 2020-07-10 | 山西北化关铝化工有限公司 | Diaphragm pressure gauge and diaphragm vacuum gauge calibrating device |
-
2021
- 2021-10-18 CN CN202111211999.0A patent/CN114061830A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997022855A1 (en) * | 1995-12-20 | 1997-06-26 | The Dow Chemical Company | System for measuring differential pressure, flow, and level |
| CN203163934U (en) * | 2013-04-22 | 2013-08-28 | 大唐鲁北发电有限责任公司 | Verifying connecting device of diaphragm pressure instrument |
| CN107870062A (en) * | 2016-09-26 | 2018-04-03 | 中电华元核电工程技术有限公司 | A kind of used in nuclear power station diaphragm type instrument calibration device |
| CN206563633U (en) * | 2017-02-20 | 2017-10-17 | 神华集团有限责任公司 | Flange plate structure for carrying out pressure checking to manometer |
| CN208579864U (en) * | 2018-07-16 | 2019-03-05 | 中石化南京工程有限公司 | A kind of flange pressure table calibration equipment |
| CN208847402U (en) * | 2018-09-12 | 2019-05-10 | 中国石油天然气第七建设有限公司 | Multifunction instrument checking table |
| CN210180471U (en) * | 2019-07-30 | 2020-03-24 | 青海盐湖工业股份有限公司 | Connecting piece for checking instrument |
| CN210981635U (en) * | 2019-09-26 | 2020-07-10 | 山西北化关铝化工有限公司 | Diaphragm pressure gauge and diaphragm vacuum gauge calibrating device |
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