CN218180193U - Pressure sensor calibrating device - Google Patents
Pressure sensor calibrating device Download PDFInfo
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- CN218180193U CN218180193U CN202222598950.1U CN202222598950U CN218180193U CN 218180193 U CN218180193 U CN 218180193U CN 202222598950 U CN202222598950 U CN 202222598950U CN 218180193 U CN218180193 U CN 218180193U
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Abstract
The utility model is suitable for a pressure sensor technique provides a pressure sensor calibrating device for the calibration of pressure sensor that awaits measuring, include: a box body; the hydraulic system is arranged in the box body and connected with a plurality of groups of hydraulic rod assemblies arranged outside the box body through pipelines; the hydraulic system comprises a plunger pump set and a hydraulic cylinder, wherein the plunger pump set and the hydraulic cylinder are composed of plunger pumps with different accuracies, hydraulic oil pumped by the plunger pump set is conveyed to different hydraulic rod assemblies through the hydraulic cylinder, and a pressure sensor to be detected, which is arranged on the box body, is positioned below the hydraulic rod assemblies. The utility model provides a hydraulic stem subassembly replaces traditional pneumatic equipment to produce pressure, makes the pressure sensor that awaits measuring obtain the invariable pressure value of numerical value, avoids the not enough error that causes of pneumatic structural stability, makes the pneumatic cylinder obtain the hydraulic pressure that the pressure value precision is high through different precision plunger pumps, lets the hydraulic pressure that the hydraulic stem subassembly obtained stabilize the characteristics that possess the high accuracy simultaneously.
Description
Technical Field
The utility model belongs to the technical field of pressure sensor, especially, relate to a pressure sensor calibrating device.
Background
The common displacement sensor pressure sensor is an instrument for converting a pressure signal into an electric signal, and has the advantages of good stability, high reliability, strong environmental adaptability and the like, so that the common displacement sensor pressure sensor is widely applied to various links of industrial production, and the regular metering and calibration of the pressure sensor are necessary work for ensuring the accuracy and reliability of the measured data of the pressure sensor.
In the in-service use, pressure sensor calibrating device adopts pneumatic structure to calibrate pressure sensor that awaits measuring mostly, because the density low characteristic of atmospheric pressure leads to pneumatic equipment stability not enough easily, lets calibrating device produce the error, and pressure sensor calibration result precision is low.
SUMMERY OF THE UTILITY MODEL
The utility model provides a pressure sensor calibrating device aims at solving the problem that present pneumatic equipment stability is not enough to lead to pressure sensor calibration precision low.
The utility model discloses a realize like this, a pressure sensor calibrating device for the calibration of pressure sensor that awaits measuring, include:
a box body;
the hydraulic system is arranged in the box body and connected with a plurality of groups of hydraulic rod assemblies arranged outside the box body through pipelines;
the hydraulic system comprises a plunger pump set and a hydraulic cylinder, wherein the plunger pump set and the hydraulic cylinder are composed of plunger pumps with different accuracies, hydraulic oil pumped by the plunger pump set is conveyed to different hydraulic rod assemblies through the hydraulic cylinder, and a pressure sensor to be detected, which is arranged on the box body, is positioned below the hydraulic rod assemblies.
Preferably, the case includes a lower case and an upper case; the plunger pump set and the hydraulic cylinder are both located in the lower box body, the upper box body is of an inverted L shape, and a plurality of groups of hydraulic rod assemblies are arranged below the upper box body.
Preferably, the hydraulic system further comprises a switching valve, the hydraulic cylinder being in communication with the different hydraulic rod assemblies via the switching valve.
Preferably, the plunger pump group comprises a first plunger pump, a second plunger pump and a third plunger pump, and the accuracy of the first plunger pump, the accuracy of the second plunger pump and the accuracy of the third plunger pump are respectively 0.01 liter, 0.1 liter and 1 liter.
Preferably, an operation table is arranged at the top of the lower box body, and a plurality of groups of support assemblies are arranged on the operation table.
Preferably, the support assembly comprises a base, a mounting groove and a wiring groove; the placing groove is formed in the top of the base, and the wire arranging groove is formed in the edge of the placing groove;
preferably, an instrument area is arranged on the upper box body, and a hydraulic display and a plurality of groups of pressure displays are arranged in the instrument area;
preferably, the pressure display is connected with a wiring harness interface arranged below the operating console.
Preferably, the instrument area is further provided with a control panel, and the plunger pump set and the switching valve are connected with the control panel through circuits.
Preferably, the seat assembly is located directly below the hydraulic ram assembly.
Compared with the prior art, the embodiment of the application mainly has the following beneficial effects:
1. the utility model provides a pressure sensor calibrating device replaces traditional pneumatic equipment to produce pressure through passing through the hydraulic stem subassembly, makes the pressure sensor that awaits measuring obtain the invariable pressure value of numerical value, avoids the not enough error that causes of pneumatic structural stability.
2. The utility model provides a pressure sensor calibrating device makes the pneumatic cylinder obtain the hydraulic pressure that the pressure value precision is high through different precision plunger pumps, lets the hydraulic pressure that hydraulic stem subassembly obtained stabilize the characteristics that possess the high accuracy simultaneously, further reduces the error of hydraulic stem subassembly, improves pressure sensor calibrating device's accuracy.
3. The utility model provides a pneumatic cylinder carries same hydraulic pressure to different hydraulic pressure pole subassemblies through change-over valve among the pressure sensor calibrating device, carries out synchronous batch pressure test to the pressure sensor that awaits measuring of difference, effectively reduces the error among the alignment process, improves the accuracy that pressure sensor rectified.
Drawings
Fig. 1 is a schematic structural diagram of a pressure sensor calibration apparatus provided by the present invention.
Fig. 2 is a front view of a pressure sensor calibration device provided by the present invention.
Fig. 3 is a schematic structural diagram of a hydraulic system of a pressure sensor calibration apparatus provided by the present invention.
Fig. 4 is a schematic structural diagram of a middle hydraulic rod assembly of a pressure sensor calibration device provided by the present invention.
Fig. 5 is a schematic structural diagram of a support assembly of a pressure sensor calibration apparatus provided by the present invention.
Detailed Description
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof in the description and claims of this application and the description of the figures above, are intended to cover non-exclusive inclusions. The terms "first," "second," and the like in the description and claims of this application or in the above-described drawings are used for distinguishing between different objects and not for describing a particular order.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein may be combined with other embodiments.
An embodiment of the utility model provides a pressure sensor calibrating device, as shown in fig. 1-5, pressure sensor calibrating device for the pressure sensor's that awaits measuring calibration, include:
a box body;
the hydraulic system is arranged in the box body and connected with the plurality of groups of hydraulic rod assemblies 410 arranged outside the box body through pipelines;
the hydraulic system comprises a plunger pump set and hydraulic cylinders 230, wherein the plunger pump set consists of plunger pumps with different accuracies, high-accuracy hydraulic pressure generated by the plunger pump set flows to different hydraulic rod assemblies 410 through the hydraulic cylinders 230, and pressure testing is carried out on a plurality of groups of pressure sensors to be tested;
in the present embodiment, the plunger pump group includes a first plunger pump 221, a second plunger pump 222, and a third plunger pump 223, and the accuracy of the first plunger pump 221, the second plunger pump 222, and the third plunger pump 223 is 0.01 liter, 0.1 liter, and 1 liter, respectively; the plunger pump set is the prior art;
the first plunger pump 221, the second plunger pump 222 and the third plunger pump 223 are adopted, so that the hydraulic cylinder 230 can obtain high-precision hydraulic pressure conveniently, hydraulic oil with the same hydraulic pressure is conveyed to different hydraulic rod assemblies 410 through the change-over valve 240 communicated with the hydraulic cylinder 230, synchronous pressure tests are carried out on different pressure sensors to be tested, errors in the correction process are effectively reduced, and the correction accuracy of the pressure sensors is improved;
in the present embodiment, the case includes a lower case 110, an upper case 120, a meter area 130, and an operation table 140; the plunger pump set and the hydraulic cylinder 230 are both positioned in the lower box body 110, the upper box body 120 is in an inverted L shape, a plurality of groups of hydraulic rod assemblies 410 are arranged below the upper box body 120, a plurality of groups of support assemblies 510 are arranged on the operating platform 140, the support assemblies 510 correspond to the hydraulic rod assemblies 410 one by one, and the support assemblies 510 are positioned under the hydraulic rod assemblies 410;
in a further preferred embodiment of the present invention, the meter area 130 is provided with a plurality of sets of pressure displays 310 and hydraulic displays 320, the hydraulic displays 320 are connected to the hydraulic sensor disposed between the hydraulic cylinder 230 and the switching valve 240, and the pressure displays 310 are respectively connected to the wire harness interfaces 520 disposed below the console 140;
in the present embodiment, the hydraulic pressure display 320 is a conventional one, and displays the hydraulic pressure value output by the hydraulic cylinder 230; the pressure display 310 is also the prior art, and the pressure sensor to be tested is connected with the wiring harness interface 520, and transmits the measured data to the pressure display 310 for displaying; an operator can directly obtain correction data through comparison with a standard pressure sensor;
in a further preferred embodiment of the present invention, the hydraulic system further includes a hydraulic oil tank 210, and the first plunger pump 221, the second plunger pump 222, and the third plunger pump 223 are respectively communicated with the hydraulic oil tank 210 disposed in the lower box 110 through pipes;
in this embodiment, the hydraulic oil tank 210 is a prior art, hydraulic oil in the hydraulic oil tank 210 is delivered to the hydraulic cylinder 230 under the action of the first plunger pump 221, the second plunger pump 222, and the third plunger pump 223, and then is delivered to different hydraulic rod assemblies 410 by the hydraulic cylinder 230;
in a further preferred embodiment of the present invention, the hydraulic rod assembly 410 includes an oil cylinder 411 and a hydraulic rod 412, the hydraulic rod 412 is disposed below the oil cylinder 411, and the oil cylinder 411 is communicated with the change-over valve 240 through a pipeline;
in the present embodiment, the hydraulic rod assembly 410 is a prior art, hydraulic oil input from the hydraulic cylinder 230 generates pressure in the oil cylinder 411, and applies pressure to a pressure sensor to be measured, which is placed on the support assembly 510 below the hydraulic rod 412; the pressure is generated by the pressing force of the hydraulic rod assembly 410, so that the pressure value is measured by the pressure sensor to be measured; analyzing the data of the pressure values to obtain correction data of the pressure sensor to be measured;
as a preferred embodiment in this embodiment, the support assembly 510 includes a base 511, a mounting groove 512 and a cable arranging groove 513; the mounting groove 512 is formed in the top of the base 511, and the edge of the mounting groove 512 is provided with a wiring groove 513, so that the hydraulic rod assembly 410 is prevented from extruding a wire harness of the pressure sensor to be tested in the test process;
in the embodiment, the diameter and the depth of the mounting groove 512 have various specifications, the support assembly 510 is mounted on the operating platform 140 through bolts, and when the pressure sensor is used, an operator can use the support assemblies 510 with different diameters or depths as required, so that accidents of the pressure sensor in the test process are avoided;
in a further preferred embodiment of the present invention, the gauge area 130 is further provided with a control panel, and the plunger pump set and the conversion valve are connected to the control panel through a circuit;
in this embodiment, the control panel and the switch valve are both in the prior art, and the control panel can control the plunger pump set and the switch valve, operate the hydraulic oil amount input by the hydraulic cylinder 230, and deliver the hydraulic oil in the hydraulic cylinder 230 to the designated hydraulic rod assembly 410;
in a further preferred embodiment of the present invention, a pressure sensor calibration device can be operated in a single comparison mode when in use, only two paths are left by operating a change-over valve and are respectively communicated with the hydraulic rod assemblies 410 above the standard pressure sensor and the pressure sensor to be measured, and when in comparison, the plunger pump set can adjust the hydraulic pressure according to the situation, acquire the data curve of the pressure sensor to be measured, and perform a comparison analysis with the data curve of the standard pressure sensor; a computer is arranged in the upper box body 120, and the computer can record and analyze data of the standard pressure sensor and the pressure sensor to be detected;
in a further preferred embodiment of the present invention, a pressure sensor calibration device can be operated in a multi-channel mode when in use, and by operating a change-over valve, a hydraulic cylinder 300 supplies high-precision hydraulic pressure to a hydraulic rod assembly 410 on a plurality of groups of channels to perform detection and analysis of pressure sensors in batches;
it should be noted that, for the sake of simplicity, the foregoing embodiments are described as a series of combinations of acts, but it should be understood by those skilled in the art that the present invention is not limited by the described order of acts, as some steps may be performed in other orders or simultaneously according to the present invention. Furthermore, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules involved are not necessarily essential to the invention.
The above embodiments are only used to illustrate the technical solution of the present invention, and do not limit the protection scope of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from these embodiments without any inventive step, are within the scope of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still make no creative work on the condition of conflict, and make mutual combination, addition and deletion, or other adjustments according to the features in the embodiments of the present invention, thereby obtaining other technical solutions which are different and do not depart from the concept of the present invention, and these technical solutions also belong to the scope to be protected by the present invention.
Claims (10)
1. A pressure sensor calibration device for calibration of a pressure sensor under test, comprising:
a box body;
the hydraulic system is arranged in the box body and connected with a plurality of groups of hydraulic rod assemblies arranged outside the box body through pipelines;
the hydraulic system comprises a plunger pump set and a hydraulic cylinder, wherein the plunger pump set and the hydraulic cylinder are composed of plunger pumps with different accuracies, hydraulic oil pumped by the plunger pump set is conveyed to different hydraulic rod assemblies through the hydraulic cylinder, and a pressure sensor to be detected, which is arranged on the box body, is positioned below the hydraulic rod assemblies.
2. A pressure sensor calibration device according to claim 1 wherein said housing comprises a lower housing and an upper housing; the plunger pump set and the hydraulic cylinder are both located in the lower box body, the upper box body is of an inverted L shape, and a plurality of groups of hydraulic rod assemblies are arranged below the upper box body.
3. A pressure transducer calibration device according to claim 2 wherein the hydraulic system further comprises a switch valve through which the hydraulic cylinder communicates with different hydraulic rod assemblies.
4. A pressure sensor calibration device according to claim 3 wherein the plunger pump set comprises a first plunger pump, a second plunger pump and a third plunger pump, the accuracy of the first plunger pump, the second plunger pump and the third plunger pump being 0.01 liter, 0.1 liter and 1 liter respectively.
5. The pressure sensor calibration device of claim 4, wherein the top of the lower box is provided with an operation table, and the operation table is provided with a plurality of sets of support assemblies.
6. The pressure sensor calibration device of claim 5, wherein the seat assembly comprises a base, a receiving slot, and a wiring slot; the mounting groove is arranged at the top of the base, and the wire arranging groove is arranged at the edge of the mounting groove.
7. The pressure sensor calibration device of claim 6, wherein the upper housing defines a gauge area, the gauge area defining a hydraulic display and a plurality of pressure displays.
8. The pressure sensor calibration device of claim 7, wherein the pressure display is connected to a wiring harness interface located below the console.
9. A pressure transducer calibration device according to claim 8 wherein the gauge section is further provided with a control panel, and the plunger pump set and changeover valve are connected to the control panel by electrical circuitry.
10. A pressure sensor calibration device according to claim 9 wherein said seat assembly is located directly below said hydraulic rod assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222598950.1U CN218180193U (en) | 2022-09-29 | 2022-09-29 | Pressure sensor calibrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222598950.1U CN218180193U (en) | 2022-09-29 | 2022-09-29 | Pressure sensor calibrating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218180193U true CN218180193U (en) | 2022-12-30 |
Family
ID=84624994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222598950.1U Active CN218180193U (en) | 2022-09-29 | 2022-09-29 | Pressure sensor calibrating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218180193U (en) |
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2022
- 2022-09-29 CN CN202222598950.1U patent/CN218180193U/en active Active
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