CN220187994U

CN220187994U - Valve positioner testing arrangement

Info

Publication number: CN220187994U
Application number: CN202321947705.5U
Authority: CN
Inventors: 任文彬
Original assignee: Shenzhen Nanhai Nuclear Power Technology Co ltd
Current assignee: Shenzhen Nanhai Nuclear Power Technology Co ltd
Priority date: 2023-07-24
Filing date: 2023-07-24
Publication date: 2023-12-15
Anticipated expiration: 2033-07-24

Abstract

The utility model relates to a valve positioner testing device which comprises a data processing system, a testing platform, an assembly plate, a screw rod mechanism, a driving piece and an air accommodating chamber, wherein the assembly plate is arranged above the testing platform and is used for assembling a valve positioner; a connecting rod is arranged on a sliding block of the screw rod mechanism and is connected with a valve positioner feedback rod arranged on the assembly plate; the gas-containing chamber comprises a first gas chamber and a second gas chamber, the input ports of the first gas chamber and the second gas chamber are connected with the output port of the valve positioner, and the data processing system is used for collecting, storing, processing and analyzing the data to control the testing device. The problems of workload and time cost increase caused by the lack of rechecking of the valve positioner and repeated disassembly, replacement, installation and debugging work required due to unqualified debugging after the valve positioner is installed on a machine are solved.

Description

Valve positioner testing arrangement

Technical Field

The utility model relates to the field of testing devices, in particular to a valve positioner testing device.

Background

The valve positioner is a device for controlling and regulating the position of a valve, is commonly used in industrial automation systems, including chemical industry, petroleum and natural gas, electric power, pharmacy, water treatment and the like, and can improve the automation degree, the operation accuracy and reliability of the process and reduce the operation risk and the energy consumption.

In the related technical means, a valve positioner is assembled on equipment which needs to control a valve, the valve positioner feeds back the information to a control system by measuring and recording parameters such as valve position, output signals and the like, and the control system adjusts the operation of a motor according to preset requirements and feedback information so as to control the position of the valve, so that the valve can be opened, closed or flow rate adjusted according to the requirements, and accurate control and operation of the valve are ensured.

According to the technical scheme, the valve positioner lacks of rechecking the valve positioner, the functions of the valve positioner cannot be distinguished, the condition that the valve positioner is unqualified in debugging after being installed on a valve of a machine easily occurs, and repeated disassembly, replacement, installation and debugging work are needed, so that the workload and the time cost are increased.

Disclosure of Invention

The utility model aims to provide a valve positioner testing device which aims to solve the problems existing in the prior art.

The utility model provides a valve positioner testing device, which adopts the following technical scheme:

the valve positioner testing device comprises a testing platform, a mounting plate, a screw rod mechanism, a driving piece and an air accommodating chamber, wherein the mounting plate is arranged above the testing platform and is used for mounting the valve positioner, the screw rod mechanism is arranged at one end of the mounting plate, the driving piece is connected to one end, far away from the mounting plate, of the screw rod mechanism, and the driving piece drives a screw rod of the screw rod mechanism to rotate; a connecting rod is arranged on the sliding block of the screw rod mechanism and is connected with a valve positioner feedback rod arranged on the assembly plate; the air accommodating chamber comprises a first air chamber and a second air chamber, and input ports of the first air chamber and the second air chamber are respectively connected with an output port of the valve positioner.

As a preferable scheme, the input ports of the first air chamber and the second air chamber are respectively provided with an air pressure sensor, and the air pressure sensors are used for detecting the pressure transmitted into the first air chamber and the second air chamber by the valve positioner in real time; the first air chamber and the second air chamber are provided with electromagnetic valves at the output ports, and the electromagnetic valves are used for controlling the opening and closing of the output ports.

As an optimal scheme, a baffle plate is further arranged on the sliding block of the screw rod mechanism, the testing platform is provided with a displacement sensor which is right opposite to the baffle plate, and the displacement sensor is used for measuring positions corresponding to different pressures of the feedback rod of the valve positioner.

As an optimal scheme, an installation cabinet is arranged below the test platform, and the data processing system is arranged in the installation cabinet.

As an optimal scheme, the universal wheels are arranged below the installation cabinet and used for carrying the testing device.

As a preferable scheme, the side wall of the installation cabinet is provided with an air source, and the air source is used for supplying air to the valve positioner.

As an optimal scheme, the test platform top is provided with the protection casing, the protection casing is used for dustproof and protection staff's safety.

Preferably, the side wall of the protective cover is provided with an image display module, the image display module is connected with the data processing system, and the image display module is used for displaying data and setting parameters.

Compared with the prior art, the utility model has the following beneficial effects: saving time and cost. The valve positioner is mounted on an assembly plate arranged on the test platform, a feedback rod of the valve positioner is connected with a connecting rod on a screw rod mechanism sliding block, and then the output end of the valve positioner is connected with a first air chamber and a second air chamber arranged on the test platform, so that an on-site actuating mechanism is simulated, collected data are stored, processed and analyzed through a data processing system, the problem that the valve positioner is lack of recheck, debugging disqualification occurs after the valve positioner is mounted on a machine, repeated disassembly, replacement, mounting and debugging work are needed, and the workload and time cost are increased is caused.

Drawings

FIG. 1 is a schematic diagram showing the overall structure of a valve positioner testing device according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram showing a partial structure of a valve positioner testing device according to an embodiment of the present utility model.

Reference numerals illustrate:

1. a test platform; 2. an assembly plate; 3. a screw rod mechanism; 31. a connecting rod; 32. a baffle plate; 4. a driving member; 5. a plenum chamber; 51. a first air chamber; 52. a second air chamber; 53. an air pressure sensor; 54. an electromagnetic valve; 7. a displacement sensor; 8. installing a cabinet; 81. a universal wheel; 82. a gas source; 9. a protective cover; 91. and an image display module.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present utility model, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, it is only for convenience of describing the present utility model and simplifying the description, but it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus terms describing the positional relationship in the drawings are merely illustrative and should not be construed as limitations of the present patent, and specific meanings of the terms described above may be understood by those skilled in the art according to specific circumstances.

The implementation of the present utility model will be described in detail below with reference to specific embodiments;

referring to fig. 1 and 2, a valve positioner testing device is composed of a testing platform 1, a mounting plate 2 arranged above the testing platform 1, a screw rod mechanism 3, a driving piece 4 and an air accommodating chamber 5, wherein the mounting plate 2 is provided with a avoiding opening and a threaded hole for mounting the valve positioner, the screw rod mechanism 3 is arranged at one end of the mounting plate 2 and aligned with the valve positioner, and the driving piece 4 is connected to one end of the screw rod mechanism 3 far away from the mounting plate 2, wherein the driving piece 4 is a stepping motor, and the stepping motor drives a screw rod of the screw rod mechanism 3 to rotate; the connecting rod 31 is arranged on the sliding block of the screw rod mechanism 3, and the connecting rod 31 is connected with the valve positioner feedback rod arranged on the assembly plate 2 through the coupler, so that the effect that the screw rod mechanism 3 drives the position of the valve positioner feedback rod to change is achieved; the air containing chamber 5 comprises a first air chamber 51 and a second air chamber 52, the input ports of the first air chamber 51 and the second air chamber 52 are connected with the output port of the valve positioner, and the pressure output by the valve positioner charges the first air chamber 51 and the second air chamber 52 to simulate an on-site actuating mechanism.

Referring to fig. 1 and 2, in order to monitor the real-time condition of the air pressure in the first air chamber 51 and the second air chamber 52, an air pressure sensor 53 is further arranged on the input ports of the first air chamber 51 and the second air chamber 52, and the pressure transmitted to the first air chamber 51 and the second air chamber 52 by the valve positioner is detected in real time by the air pressure sensor 53, so that the problem that the air pressure in the first air chamber 51 and the second air chamber 52 is too large or too small to be accurately monitored is solved; solenoid valves 54 are arranged at the output ports of the first air chamber 51 and the second air chamber 52, and the first air chamber 51 and the second air chamber 52 are manually controlled to be deflated before or after ending through the solenoid valves 54.

Referring to fig. 1 and 2, a baffle plate 32 is further disposed on the slider of the screw mechanism 3, the test platform 1 is provided with a displacement sensor 7 corresponding to the baffle plate 32, the displacement sensor 7 is a photoelectric displacement sensor 7, when the baffle plate 32 is displaced, the intensity or position of light changes, the displacement position is determined by measuring the output signal of the displacement sensor 7, the position corresponding to different pressures of the feedback rod of the valve positioner is measured, and the collected data is stored, processed and analyzed by the data processing system.

Referring to fig. 1 and 2, a mounting cabinet 8 is provided below a test platform 1, a data processing system is provided in the mounting cabinet 8, a universal wheel 81 is provided below the mounting cabinet 8, the problem of inconvenient transportation of a test device is solved by the universal wheel 81, an air source 82 is provided on the side wall of the mounting cabinet 8, and air is supplied to a valve positioner arranged on an assembly plate 2 through the air source 82, so that the spatial layout of the test device is optimized.

Referring to fig. 1 and 2, a protection cover 9 for dust prevention and worker safety protection is arranged above the test platform 1, an image display module 91 is arranged on the side wall of the protection cover 9, the image display module 91 is connected with a data processing system, the data processing system controls the switch of the electromagnetic valve 54 and the movement direction and movement distance of the stepping motor through an electric signal, and signals of the collected air pressure sensor 53 and the displacement sensor 7 are sent to the image display module 91, so that the effects of parameter display and matching of valves of different models to control and issue commands to control the driving of the stepping motor are achieved.

The implementation principle of the valve positioner testing device provided by the embodiment of the utility model is as follows: the valve positioner is mounted on the mounting plate 2 arranged on the test platform 1, so that the mounting position of the valve positioner is ensured to be correct and fixed, the feedback rod of the valve positioner and the connecting rod 31 on the sliding block of the screw rod mechanism 3 are ensured to be firmly connected and can realize corresponding motion transmission, the output end of the valve positioner is connected with the first air chamber 51 and the second air chamber 52 arranged on the test platform 1, and thus the on-site executing mechanism can be simulated, the data processing system is used for ensuring that the data processing system can collect, store, process and analyze the feedback data of the valve positioner, thus the problems that the valve positioner is lack of reinspection, debugging failure occurs, repeated disassembly, replacement, mounting and debugging work are required, and the workload and time cost are increased are caused are solved.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. The valve positioner testing device is characterized by comprising a testing platform (1), an assembly plate (2) arranged above the testing platform (1), a screw rod mechanism (3), a driving piece (4) and an air accommodating chamber (5), wherein the assembly plate (2) is used for assembling the valve positioner, the screw rod mechanism (3) is arranged at one end of the assembly plate (2), the driving piece (4) is connected to one end, far away from the assembly plate (2), of the screw rod mechanism (3), and the driving piece (4) drives a screw rod of the screw rod mechanism (3) to rotate; a connecting rod (31) is arranged on a sliding block of the screw rod mechanism (3), and the connecting rod (31) is connected with a valve positioner feedback rod arranged on the assembly plate (2); the air containing chamber (5) comprises a first air chamber (51) and a second air chamber (52), and input ports of the first air chamber (51) and the second air chamber (52) are respectively connected with an output port of the valve positioner.

2. A valve positioner testing device according to claim 1, wherein the input ports of the first air chamber (51) and the second air chamber (52) are further provided with air pressure sensors (53), respectively, the air pressure sensors (53) being adapted to detect in real time the pressure of the valve positioner transmitted into the first air chamber (51) and the second air chamber (52); the output ports of the first air chamber (51) and the second air chamber (52) are provided with electromagnetic valves (54), and the electromagnetic valves (54) are used for controlling the opening and closing of the output ports.

3. Valve positioner testing device according to claim 1, characterized in that the slide block of the screw mechanism (3) is further provided with a baffle plate (32), the testing platform (1) is provided with a displacement sensor (7) corresponding to the baffle plate (32), and the displacement sensor (7) is used for measuring the positions corresponding to different pressures of the valve positioner feedback rod.

4. Valve positioner testing device according to claim 1, characterized in that a mounting cabinet (8) is arranged below the testing platform (1), and that a data processing system is arranged in the mounting cabinet (8).

5. Valve positioner testing device according to claim 4, characterized in that a universal wheel (81) is arranged below the mounting cabinet (8), which universal wheel (81) is used for the handling of the testing device.

6. Valve positioner testing device according to claim 4, characterized in that a gas source (82) is provided on the side wall of the mounting cabinet (8), which gas source (82) is adapted to supply gas to the valve positioner.

7. Valve positioner testing device according to claim 1, characterized in that a protective cover (9) is arranged above the testing platform (1), which protective cover (9) is used for dust prevention and protection of staff.

8. Valve positioner testing device according to claim 7, characterized in that the side wall of the protective cover (9) is provided with an image display module (91), the image display module (91) being connected to the data processing system, the image display module (91) being adapted to display data and set parameters.