CN216770890U - Connecting piece for calibrating pressure parameters of flange type pressure transmitter - Google Patents
Connecting piece for calibrating pressure parameters of flange type pressure transmitter Download PDFInfo
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- CN216770890U CN216770890U CN202123440253.5U CN202123440253U CN216770890U CN 216770890 U CN216770890 U CN 216770890U CN 202123440253 U CN202123440253 U CN 202123440253U CN 216770890 U CN216770890 U CN 216770890U
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- centering boss
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Abstract
The utility model discloses a connecting piece for calibrating pressure parameters of a flange type pressure transmitter, which comprises: the centering boss, the connecting disc, the cone, the fastening end and the pressing hole are arranged on the outer wall of the cone; the centering boss is arranged at the top of the connecting disc, the top end of the cone is connected to the lower part of the connecting disc, the fastening end is connected to the bottom of the cone, and the pressing hole penetrates through the centering boss, the connecting disc, the cone and the fastening end; the inner wall of the pressing hole at the fastening end part is provided with internal threads; the connecting disc is provided with a plurality of fixing holes, and the fixing holes are located on the outer side of the centering boss. The flange type pressure transmitter can connect the pressure standard equipment with the flange type pressure transmitter and realize the vertical application of pressure, ensures that the flange type pressure transmitter is at the position where the pressure is vertically applied in the calibration process, and realizes the accurate calibration of the pressure parameter of the flange type pressure transmitter.
Description
Technical Field
The utility model belongs to the field of quantity detection, and particularly relates to a connecting piece for calibrating pressure parameters of a flange type pressure transmitter.
Background
The single-flange pressure transmitter is an isolated capacitive pressure transmitter and is used for detecting and outputting the internal pressure of a pressure container and a pressure pipeline. The pressure transmitter calibration method comprises the following steps: the pressure source of the pressure transmitter is connected with the joint through the rubber tube, the balance valve is closed, the sealing condition of the gas circuit is checked, then the ammeter (voltmeter) and the manual operator are connected into the output circuit of the transmitter, and calibration is started after electrification and preheating. When the differential pressure transmitter is calibrated, the positive valve and the negative valve of the three valve groups are closed, the balance valve is opened, then the exhaust valve and the drain valve or the cock are unscrewed for emptying, and then the exhaust valve and the drain valve or the cock connected with the positive pressure chamber are replaced by a self-made joint; the negative pressure chamber keeps the unscrewing state and is communicated with the atmosphere. The damping is firstly adjusted to a zero state, the zero point is firstly adjusted, then the full scale pressure is added to adjust the full scale, the output is 20mA, the on-site adjustment is fast, and a fast adjustment method of the zero point and the full scale is introduced. There is little effect on the full scale when adjusting zero, but it has an effect on zero when adjusting full scale, which is about 1/5 times the amount of span adjustment without migration, i.e., the span is adjusted 1mA upward, the zero will move up by about 0.2mA, and vice versa.
Pressure transmitter has very big market demand, and flange formula pressure transmitter accounts for 20%, and the bore of every kind of pressure transmitter ring flange is different, and the bore kind is various, and its pressure interface all is not general interface, and unthreaded moreover, and present laboratory only has simple general screw adapter, can't be connected with pressure standard equipment, can not be connected with flange formula pressure transmitter, can not accomplish pressure parameter calibration fast.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a connecting piece for calibrating pressure parameters of a flange type pressure transmitter, which can connect pressure standard equipment with the flange type pressure transmitter and realize vertical application of pressure, ensure that the flange type pressure transmitter is at a position where the pressure is vertically applied in the calibration process, and realize accurate calibration of the pressure parameters of the flange type pressure transmitter.
The technical scheme is as follows:
a connector for flange pressure transmitter pressure parameter calibration, comprising: the centering boss, the connecting disc, the cone, the fastening end and the pressing hole are arranged on the outer wall of the cone; the centering boss is arranged at the top of the connecting disc, the top end of the cone is connected to the lower part of the connecting disc, the fastening end is connected to the bottom of the cone, and the pressing hole penetrates through the centering boss, the connecting disc, the cone and the fastening end; the inner wall of the pressing hole at the fastening end part is provided with internal threads; the connecting disc is provided with a plurality of fixed orificess, and the fixed orificess is located the centering boss outside.
Furthermore, the centering boss, the connecting disc and the fastening end are cylindrical, the cone is in a cone frustum shape, and the centering boss, the connecting disc, the cone and the fastening end are located on the same axis.
Furthermore, the centers of circles of the plurality of fixing holes are located on the same circumference.
Further, the fixing hole is provided with a connecting bolt.
Furthermore, a sealing ring groove is arranged at the top end of the middle boss, and a sealing ring is installed in the sealing ring groove.
Furthermore, the excircle of the top end of the centering boss is provided with a chamfer, and the top of the pressing hole is provided with a chamfer.
Compared with the prior art, the utility model has the following advantages:
the flange type pressure transmitter is used for calibrating pressure parameters of the flange type pressure transmitter, the connecting piece can connect pressure standard equipment with the flange type pressure transmitter and vertically apply pressure, the flange type pressure transmitter is ensured to be in a position where the pressure is vertically applied in the calibration process, and the sealing performance of the flange type pressure transmitter can be kept.
The flange type pressure transmitter can be connected with the pressure standard equipment, the calibration of the pressure parameters is realized, a stable pressure value can be provided, and the position of the pressure standard equipment for vertically applying pressure is ensured, so that the accuracy of the calibration of the pressure parameters of the flange type pressure transmitter is ensured, the calibration quality is improved, and the accurate calibration of the pressure parameters of the flange type pressure transmitter is realized.
The pressure parameter measuring and calibrating device is simple and applicable in structural principle, can better ensure the accuracy of the measuring and calibrating data of the pressure parameters of the flange type pressure transmitter, and is convenient to popularize and use.
Drawings
FIG. 1 is a schematic front view of a connector according to the present invention;
fig. 2 is a schematic longitudinal sectional view of the connecting member of the present invention.
Detailed Description
The following description sufficiently illustrates specific embodiments of the utility model to enable those skilled in the art to practice and reproduce it.
As shown in fig. 1, it is a schematic front structure of the connector of the present invention; as shown in FIG. 2, the structure of the connecting member of the present invention is schematically shown in a longitudinal section.
A connecting piece for flange formula pressure transmitter pressure parameter calibration, its structure includes: the centering boss 1, the connecting disc 2, the cone 3, the fastening end 4 and the pressing hole 5; centering boss 1 sets up at the top of connection pad 2, and the lower part at connection pad 2 is connected on the top of cone 3, and fastening end 4 is connected in the bottom of cone 3, and the hole of suppressing 5 runs through centering boss 1, connection pad 2, cone 3, fastening end 4. The inner wall of the pressing hole 5 at the fastening end 4 portion is provided with an internal thread. The connecting disc 2 is provided with a plurality of fixing holes 21, and the fixing holes 21 are positioned outside the centering boss 1.
The centering boss 1, the connecting disc 2 and the fastening end 4 are cylindrical, the cone 3 is in a cone frustum shape, and the centering boss 1, the connecting disc 2, the cone 3 and the fastening end 4 are located on the same axis. The centers of the plurality of fixing holes 21 are located on the same circumference. The fixing hole 21 is mounted with a connecting bolt.
The excircle at the top end of the centering boss 1 is provided with a chamfer, the top end of the centering boss 1 is provided with two sealing ring grooves 11, and sealing rings are arranged in the sealing ring grooves 11. And the top of the pressing hole 5 is provided with a chamfer.
The using method comprises the following steps:
the through hole of the flange end of the flange type pressure transmitter is aligned with the centering boss 1, the flange end is aligned with the fixing hole 21 and the flange through hole after being folded with the connecting disc 2, the connecting bolt penetrates through the fixing hole 21 and the flange through hole to connect the connecting disc 2 and the flange end of the flange type pressure transmitter, the pressurizing hole 5 is communicated with the flange type pressure transmitter, and the flange type pressure transmitter is tightly connected with the universal adapter of the pressure applying end. The sealing performance is ensured;
the internal thread of the fastening end 4 is connected with pressure standard equipment, the pressurizing hole 5 is communicated with the pressure standard equipment, and the fastening end 4 is clamped by a wrench for screwing; the tightness is ensured by adjusting the screwing range of the fixing hole 21 and the sealing ring, so that the pressure standard equipment is vertically connected with the flange type pressure transmitter;
the pressure standard equipment applies pressure, pressure medium transmits the pressure through the pressing hole 5, the pressure is applied to the flange type pressure transmitter, and the numerical value of the applied pressure is read out, so that the purpose of accurately measuring pressure parameters is achieved.
The terminology used herein is for the purpose of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.
Claims (6)
1. A coupling for calibration of pressure parameters of a flange-type pressure transmitter, comprising: centering boss, connection disc, cone, fastening end and pressing hole; the centering boss is arranged at the top of the connecting disc, the top end of the cone is connected to the lower part of the connecting disc, the fastening end is connected to the bottom of the cone, and the pressing hole penetrates through the centering boss, the connecting disc, the cone and the fastening end; the inner wall of the pressing hole at the fastening end part is provided with internal threads; the connecting disc is provided with a plurality of fixed orificess, and the fixed orificess is located the centering boss outside.
2. The connector for calibrating pressure parameters of a flange pressure transmitter of claim 1, wherein the centering boss, the coupling disk, and the fastening end are cylindrical, the cone is truncated cone-shaped, and the centering boss, the coupling disk, the cone, and the fastening end are located on the same axis.
3. The coupling for calibration of pressure parameters of a flange pressure transmitter of claim 1, wherein the centers of the plurality of attachment holes are located on the same circumference.
4. The coupling for calibrating pressure parameters of a flange pressure transmitter of claim 1, wherein the attachment holes receive attachment bolts.
5. The connector for calibrating pressure parameters of a flange pressure transmitter of claim 1, wherein the top end of the central boss is provided with a sealing ring groove, and a sealing ring is arranged in the sealing ring groove.
6. The connector for calibrating pressure parameters of a flange pressure transmitter of claim 1, wherein the outer circumference of the top end of the centering boss is provided with a chamfer, and the top of the pressing hole is provided with a chamfer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123440253.5U CN216770890U (en) | 2021-12-30 | 2021-12-30 | Connecting piece for calibrating pressure parameters of flange type pressure transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123440253.5U CN216770890U (en) | 2021-12-30 | 2021-12-30 | Connecting piece for calibrating pressure parameters of flange type pressure transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216770890U true CN216770890U (en) | 2022-06-17 |
Family
ID=81970122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123440253.5U Active CN216770890U (en) | 2021-12-30 | 2021-12-30 | Connecting piece for calibrating pressure parameters of flange type pressure transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216770890U (en) |
-
2021
- 2021-12-30 CN CN202123440253.5U patent/CN216770890U/en active Active
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