CN112178008A - Method for calibrating pressure sensor of main oil cylinder of hydraulic vulcanizing machine and pipeline structure - Google Patents
Method for calibrating pressure sensor of main oil cylinder of hydraulic vulcanizing machine and pipeline structure Download PDFInfo
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- CN112178008A CN112178008A CN202011037551.7A CN202011037551A CN112178008A CN 112178008 A CN112178008 A CN 112178008A CN 202011037551 A CN202011037551 A CN 202011037551A CN 112178008 A CN112178008 A CN 112178008A
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- pressure sensor
- pressure measuring
- interface
- pressure
- main oil
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
- F15B19/002—Calibrating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/027—Check valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
A method for calibrating a pressure sensor of a main oil cylinder of a hydraulic vulcanizing machine and a pipeline structure are disclosed, wherein a calibration interface is arranged on a pipeline for connecting the main oil cylinder and the pressure sensor, a standard pressure measuring piece is connected to the calibration interface, and whether the pressure value measured by the pressure sensor is accurate or not is judged by comparing the pressure value measured by the standard pressure measuring piece with the pressure value obtained by the pressure sensor during calibration. The standard pressure measuring piece is connected through the checking structure during checking, and the standard pressure measuring piece can be detached after checking is completed, so that the pipeline structure of the main oil cylinder of the hydraulic vulcanizing machine is restored to normal operation. The whole inspection process is convenient and fast, and the pressure sensor does not need to be disassembled.
Description
Technical Field
The invention relates to a pipeline structure of a hydraulic system of a hydraulic vulcanizing machine, in particular to a method for checking a pressure sensor of a main oil cylinder of the hydraulic vulcanizing machine and the pipeline structure.
Background
In the rubber industry, vulcanization is one of main processes for processing rubber products, a hydraulic vulcanizing machine is a device widely adopted by a pressure vulcanization method, the vulcanization pressure in the pressure vulcanization method is one of three key elements of vulcanization and is a key factor for determining the product performance quality, and the vulcanization pressure is transmitted to a mold by a main oil cylinder of the hydraulic vulcanizing machine and then transmitted to rubber materials by the mold, so that the pressure of the main oil cylinder of the vulcanizing machine must be accurate. At present, most of vulcanizing machines adopt a pressure sensor to measure the pressure of a main oil cylinder, and the pressure sensor needs to carry out periodic detection to ensure that the vulcanizing pressure is accurate. Through patent search, the same patent literature disclosure as the present patent is not found, and the following documents are relevant to the present patent:
1. the utility model patent with the application number of CN201220022914.4 named as three-way pressure checking device;
2. the utility model patent with the application number of "CN 201320626999.1" named as "pressure measuring joint with exhaust function and hydraulic system";
3. the invention has the application number of CN201910121861.8 and is named as a novel pressure measuring device of a vulcanizing machine. Although the above comparison documents all relate to pressure calibration related devices, calibration methods and calibration pipeline structures are not proposed for the main oil cylinder pressure sensor of the hydraulic vulcanizing machine.
Therefore, the method for checking the pressure sensor of the main oil cylinder of the hydraulic vulcanizing machine and the pipeline structure have great significance in the technical field.
Disclosure of Invention
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a checking interface is arranged on a pipeline connected with a main oil cylinder and the pressure sensor, a standard pressure measuring piece is connected to the checking interface, and whether the pressure value measured by the pressure sensor is accurate or not is judged by comparing the pressure value measured by the standard pressure measuring piece with the pressure value obtained by the pressure sensor during checking.
Furthermore, a valve is arranged on the check interface, so that the valve is in an open state during checking, and the valve is in a closed state during non-checking.
Furthermore, the standard pressure measuring piece is connected to the calibration interface in a detachable manner.
Furthermore, an opening device is further arranged on the standard pressure measuring piece, the opening device enables the valve to be opened when the standard pressure measuring piece is connected to the calibration interface, and the valve is closed when the standard pressure measuring piece is detached from the calibration interface.
Further, the method specifically comprises the following steps of firstly, reducing the pressure of the main oil cylinder to zero; then connecting the standard pressure measuring piece to the checking interface; opening the valve and opening the main oil cylinder, reading the pressure value measured by the standard pressure measuring piece and the pressure value measured by the pressure sensor, and comparing to complete the verification; and finally, after the pressure value of the main oil cylinder is released to zero, the standard pressure measuring piece is disassembled and the valve is closed.
The hydraulic vulcanizing machine main oil cylinder pressure sensor calibration pipeline structure comprises a main oil cylinder and a pressure sensor, a calibration interface is connected to a pipeline connected with the main oil cylinder and the pressure sensor, and a standard pressure measuring piece is connected to the calibration interface.
Further, the check interface further comprises a valve.
Further, the standard pressure measuring piece is detachably connected to the checking interface.
Furthermore, the standard pressure measuring piece and the main oil cylinder are connected with the pressure sensor through a three-way joint, the three-way joint is connected with the standard pressure measuring piece through a checking interface, and the main oil cylinder and the pressure sensor are respectively connected with the other two interfaces of the three-way joint.
Furthermore, the standard pressure measuring piece is connected with a checking interface of the three-way joint through a pressure measuring joint, the checking interface is provided with an external thread, and the pressure measuring joint is provided with an internal thread matched with the external thread; the valve is a one-way valve and is arranged in the check interface, a hollow thimble is arranged at the joint of the pressure measuring joint and the check interface, and after the pressure measuring joint is in threaded connection with the check interface, the hollow thimble opens the one-way valve.
The invention has the following advantages:
the method for checking the pressure sensor of the main oil cylinder of the hydraulic vulcanizing machine and the pipeline structure can quickly check the pressure sensor, the standard pressure measuring piece is connected through the checking structure during checking, and the standard pressure measuring piece can be detached after the checking is finished, so that the pipeline structure of the main oil cylinder of the hydraulic vulcanizing machine is recovered to normal operation. The whole inspection process is convenient and fast, and the pressure sensor does not need to be disassembled.
Drawings
FIG. 1 is a schematic view of a piping structure connection;
FIG. 2 is a schematic diagram of a check structure connection;
FIG. 3 is a schematic view of a pressure tap arrangement.
Detailed Description
In order that those skilled in the art will be able to fully practice the present invention, it will be further described with reference to the accompanying drawings and specific examples.
As shown in fig. 1 to 3, in the method for calibrating the pressure sensor of the master cylinder of the hydraulic vulcanizer, a calibration interface 5 is arranged on a pipeline connecting the master cylinder 4 and the pressure sensor 2, a standard pressure measurement member 6 is connected to the calibration interface 5, and during calibration, whether the pressure value measured by the pressure sensor 6 is accurate or not is judged by comparing the pressure value measured by the standard pressure measurement member 6 with the pressure value obtained by the pressure sensor. After the standard pressure measuring piece 6 is connected to a pipeline connecting the main oil cylinder 4 and the pressure sensor 2 through the checking interface 5, hydraulic oil of the main oil cylinder 4 flows to the standard pressure measuring piece 6 and the pressure sensor 2 through pipelines respectively, and the pressure sensor 2 can be checked by comparing measured values of the standard pressure measuring piece 6 and the pressure sensor 2. The measurement accuracy of the standard pressure measuring piece 6 should be higher than that of the pressure sensor 2 so that the calibration process is accurate. In this embodiment, the standard pressure measuring piece 6 may be a pressure gauge, and the measurement value of the pressure sensor 2 may be obtained by a monitoring instrument of the original hydraulic vulcanizer.
In order to enable the verification process to be in a controllable state, a valve 7 is arranged on the verification interface 5, the valve 7 is in an open state during verification, and the valve 7 is in a closed state during non-verification. Therefore, the valve 7 is opened to start calibration when the calibration is needed, and the valve 7 can be closed after the calibration is finished, so that the hydraulic pipeline of the main oil cylinder 4 is recovered to be normal.
Since the calibration is generally performed periodically, and the standard pressure measuring piece 6 does not need to be connected to the calibration interface 5 all the time, in this embodiment, the standard pressure measuring piece 6 is connected to the calibration interface 5 in a detachable manner by connecting the standard pressure measuring piece 6 to the calibration interface 5. Typically, the standard pressure measurement member 6 and the calibration interface 5 are connected by a threaded connection, or by a ball and groove fit seal as in the prior art.
The valve 7 can be implemented in various ways, such as a manually opened valve or an automatically opened valve in cooperation with some opening device. In the embodiment, in order to facilitate the operation during the calibration and make the calibration process faster, an opening device is further disposed on the standard pressure measuring piece 6, the opening device opens the valve 7 when the standard pressure measuring piece 6 is connected to the calibration interface 5, and the valve 7 is closed when the standard pressure measuring piece 6 is detached from the calibration interface 5. A common opening device is matched with the valve 7 to form a check valve with a spring inside, and the opening device can be an ejector block or an ejector pin for pushing the check valve to open.
The specific checking process adopts the following steps that the pressure of the main oil cylinder 4 is firstly released to zero; then connecting the standard pressure measuring piece 6 to the checking interface 5; opening the valve 7 and opening the main oil cylinder 4, reading the pressure value measured by the standard pressure measuring piece 6 and comparing the pressure value measured by the pressure sensor 6 to finish the verification; and finally, after the pressure value of the main oil cylinder 4 is released to zero, the standard pressure measuring piece 6 is disassembled, and the valve 7 is closed.
The hydraulic vulcanizing machine main oil cylinder pressure sensor checking pipeline structure designed by the method comprises a main oil cylinder 4 and a pressure sensor 2, wherein a standard pressure measuring piece 6 and the main oil cylinder 4 are connected with the pressure sensor 2 through a three-way joint 1, the three-way joint 1 is connected with the standard pressure measuring piece 6 through a checking interface 5, and the main oil cylinder 4 and the pressure sensor 2 are respectively connected with the other two interfaces of the three-way joint. A check valve is further arranged in the check interface 5, the check interface 5 is in a closed state under the action of a check valve spring during non-check, and at the moment, hydraulic oil of the main oil cylinder 4 flows to the pressure sensor 2 through the three-way joint.
In this embodiment, the standard pressure measuring piece 6 is a pressure gauge, the pressure gauge is connected to the pressure measuring joint 3 through a flexible pipe, the pressure measuring joint 3 is cylindrical and has an internal thread, a hollow thimble 31 is arranged in the center of the pressure measuring joint 3, and the cavity of the hollow thimble 31 is communicated with the flexible pipe. When the pressure measuring connector 3 is connected to the calibration interface 5 through the pressure measuring connector 3, the hollow thimble 31 jacks the check valve, at the moment, hydraulic oil of the main oil cylinder 4 flows through the calibration interface 5 and a hose through a cavity of the hollow thimble 31 to enter a pressure gauge, and the pressure gauge and the oil pressure of the pressure measuring sensor 2 are in an equal state. After the verification is finished, the pressure measuring connector 3 is detached from the threaded connection of the verification interface 5, and the one-way valve is restored to a closed state under the action of the spring. In order to protect the verification interface 5 during non-verification, a protection nut 32 is further connected to the verification interface 5 in a threaded mode, the protection nut 32 is connected to the verification interface 5 during non-verification, the protection nut 32 can be detached during verification, the protection nut 32 and the verification interface 5 are connected through a rope, and the protection nut 32 is prevented from being lost after being detached.
Obviously, the above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method for checking a pressure sensor of a main oil cylinder of a hydraulic vulcanizing machine is characterized by comprising the following steps: a checking interface (5) is arranged on a pipeline connecting the main oil cylinder (4) and the pressure sensor (2), a standard pressure measuring piece (6) is connected to the checking interface (5), and whether the pressure value measured by the pressure sensor (6) is accurate or not is judged by comparing the pressure value measured by the standard pressure measuring piece (6) with the pressure value obtained by the pressure sensor during checking.
2. The hydraulic vulcanizer master cylinder pressure sensor verification method as set forth in claim 1, wherein: and a valve (7) is arranged on the verification interface (5), so that the valve (7) is in an open state during verification, and the valve (7) is in a closed state during non-verification.
3. The hydraulic vulcanizer master cylinder pressure sensor verification method as set forth in claim 2, wherein: the standard pressure measuring and pressing piece (6) is connected to the checking interface (5) in a way that the standard pressure measuring and pressing piece (6) is detachably connected to the checking interface (5).
4. The hydraulic vulcanizer master cylinder pressure sensor verification method as set forth in claim 3, wherein: the standard pressure measuring piece (6) is further provided with an opening device, the opening device enables the valve (7) to be opened when the standard pressure measuring piece (6) is connected to the verification interface (5), and the valve (7) is closed when the standard pressure measuring piece (6) is detached from the verification interface (5).
5. The method for verifying the master cylinder pressure sensor of a hydraulic vulcanizer of claim 4, wherein: the method specifically comprises the following steps of firstly, reducing the pressure of a main oil cylinder (4) to zero; then connecting the standard pressure measuring piece (6) to the checking interface (5); opening the valve (7) and opening the main oil cylinder (4), reading the pressure value measured by the standard pressure measuring piece (6) and comparing the pressure value measured by the pressure sensor (6) to finish verification; and finally, after the pressure value of the main oil cylinder (4) is released to zero, the standard pressure measuring piece (6) is disassembled, and the valve (7) is closed.
6. The utility model provides a hydraulic pressure vulcanizer master cylinder pressure sensor check-up pipeline structure, includes master cylinder (4) and pressure sensor (6), its characterized in that: a pipeline connected with the main oil cylinder (4) and the pressure sensor (2) is connected with a calibration interface (5), and the calibration interface (5) is connected with a standard pressure measuring piece (6).
7. The hydraulic vulcanizer master cylinder pressure sensor check line structure as set forth in claim 6, wherein: the check interface (5) also comprises a valve (7).
8. The hydraulic vulcanizer master cylinder pressure sensor check line structure as set forth in claim 7, wherein: the standard pressure measuring piece (6) is detachably connected to the checking interface (5).
9. The hydraulic vulcanizer master cylinder pressure sensor check line structure as set forth in claim 8, wherein: the standard pressure measuring piece (6) and the main oil cylinder (4) are connected with the pressure sensor (2) through the three-way joint (1), the three-way joint (1) is connected with the standard pressure measuring piece (6) through the checking interface (5), and the main oil cylinder (4) and the pressure sensor (2) are respectively connected with the other two interfaces of the three-way joint.
10. The hydraulic vulcanizer master cylinder pressure sensor check line structure as set forth in claim 9, wherein: the standard pressure measuring piece (6) is connected with a checking interface (5) of the three-way joint (1) through a pressure measuring joint (3), an external thread is arranged on the checking interface (5), and an internal thread matched with the external thread is arranged on the pressure measuring joint (3); the valve (7) is a one-way valve and is arranged in the checking interface (5) in a built-in mode, a hollow ejector pin (31) is arranged at the joint of the pressure measuring connector (3) and the checking interface (5), and after the pressure measuring connector (3) is in threaded connection with the checking interface (5), the one-way valve is opened through the hollow ejector pin (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011037551.7A CN112178008A (en) | 2020-09-28 | 2020-09-28 | Method for calibrating pressure sensor of main oil cylinder of hydraulic vulcanizing machine and pipeline structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011037551.7A CN112178008A (en) | 2020-09-28 | 2020-09-28 | Method for calibrating pressure sensor of main oil cylinder of hydraulic vulcanizing machine and pipeline structure |
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| CN112178008A true CN112178008A (en) | 2021-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011037551.7A Pending CN112178008A (en) | 2020-09-28 | 2020-09-28 | Method for calibrating pressure sensor of main oil cylinder of hydraulic vulcanizing machine and pipeline structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112763122A (en) * | 2021-01-13 | 2021-05-07 | 河南平高电气股份有限公司 | Spring pressure sensor calibration device of spring operating mechanism |
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| DE10018493C1 (en) * | 2000-04-14 | 2001-10-31 | Axel Poehls | Dynamic calibration device for piezoelectric pressure sensor uses signal from reference pressure sensor for regulating pressure in fluid-filled pressure chamber used for calibration |
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| DE102012001403A1 (en) * | 2012-01-26 | 2013-08-01 | Porep Gmbh | Device for calibrating pressure sensors |
| CN203216669U (en) * | 2013-02-28 | 2013-09-25 | 福建省长汀金龙稀土有限公司 | Pressure checking apparatus |
| CN203282638U (en) * | 2013-06-10 | 2013-11-13 | 哈尔滨理工大学 | Plate vulcanizing machine |
| CN203688152U (en) * | 2013-12-31 | 2014-07-02 | 浙江吉利控股集团有限公司 | Novel gas pressure reducer verifying device |
| CN206054441U (en) * | 2016-08-26 | 2017-03-29 | 常州市第一橡塑设备有限公司 | The overload protection arrangement of oil cylinder |
| CN206192574U (en) * | 2016-11-02 | 2017-05-24 | 福建上润精密仪器有限公司 | Manometer online calibration device based on three -way cock valve |
| CN207197728U (en) * | 2017-06-30 | 2018-04-06 | 武汉轻工大学 | A kind of pressure gauge tester |
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2020
- 2020-09-28 CN CN202011037551.7A patent/CN112178008A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10018493C1 (en) * | 2000-04-14 | 2001-10-31 | Axel Poehls | Dynamic calibration device for piezoelectric pressure sensor uses signal from reference pressure sensor for regulating pressure in fluid-filled pressure chamber used for calibration |
| CN2864644Y (en) * | 2005-12-12 | 2007-01-31 | 洛阳轴承集团有限公司 | In-line detecting device for pressure meter |
| DE102012001403A1 (en) * | 2012-01-26 | 2013-08-01 | Porep Gmbh | Device for calibrating pressure sensors |
| CN203216669U (en) * | 2013-02-28 | 2013-09-25 | 福建省长汀金龙稀土有限公司 | Pressure checking apparatus |
| CN203282638U (en) * | 2013-06-10 | 2013-11-13 | 哈尔滨理工大学 | Plate vulcanizing machine |
| CN203688152U (en) * | 2013-12-31 | 2014-07-02 | 浙江吉利控股集团有限公司 | Novel gas pressure reducer verifying device |
| CN206054441U (en) * | 2016-08-26 | 2017-03-29 | 常州市第一橡塑设备有限公司 | The overload protection arrangement of oil cylinder |
| CN206192574U (en) * | 2016-11-02 | 2017-05-24 | 福建上润精密仪器有限公司 | Manometer online calibration device based on three -way cock valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112763122A (en) * | 2021-01-13 | 2021-05-07 | 河南平高电气股份有限公司 | Spring pressure sensor calibration device of spring operating mechanism |
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Application publication date: 20210105 |