CN214309467U - Pneumatic control valve Bench Set value adjustment testing arrangement - Google Patents
Pneumatic control valve Bench Set value adjustment testing arrangement Download PDFInfo
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- CN214309467U CN214309467U CN202120398774.XU CN202120398774U CN214309467U CN 214309467 U CN214309467 U CN 214309467U CN 202120398774 U CN202120398774 U CN 202120398774U CN 214309467 U CN214309467 U CN 214309467U
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Abstract
The utility model discloses a pneumatic control valve Bench Set value adjusting and testing device, which comprises an air source device, a sensing device, a transmission device, a control device and a power supply device; the air source device comprises an electric proportional valve communicated with an external compressed air source and the diaphragm air cavity; the sensing device comprises an air pressure sensor which is communicated with the diaphragm air cavity and used for sensing a pressure value, and a displacement sensor which is arranged on the pneumatic rod and used for sensing the displacement value of the pneumatic rod in the process of compressing the spring; the transmission device comprises a collector which is in communication connection with the air pressure sensor and the displacement sensor; the control device comprises a controller in communication connection with the electric proportional valve and an upper computer in communication connection with the collector and the controller. The utility model discloses only with just alone can accomplish the adjustment and the test of pneumatic actuator spring Bench value, and because the portability and the validity of operation, can accomplish Bench value adjustment and test maintenance step by the efficient.
Description
Technical Field
The utility model relates to a pneumatic control valve Bench Set value technical field especially relates to a pneumatic control valve Bench Set value adjustment testing arrangement.
Background
The Bench Set value (initial pretension value of a spring of a pneumatic actuating mechanism, referred to as Bench Set value for short) is used as one of important parameters influencing the precision and sensitivity of the regulating valve, and the Bench Set value is a quality key point in the maintenance of the pneumatic regulating valve.
The conventional Bench Set value setting is as follows in fig. 1: firstly connecting a compressed air source, adjusting a Bench Set value by adopting the cooperation of two persons, manually operating a pressure reducing valve 1 by a first person, observing the reading of a pressure gauge 2 to rise to an initial value of the Bench Set value, observing and touching a pneumatic rod 4 by a second person to sense whether the pneumatic rod 4 moves, and adjusting a spring adjusting nut after pressure relief if the action of the pneumatic rod 4 is advanced or lagged until the pneumatic rod 4 moves at the initial value of the Bench Set value under the cooperation observation of the two persons. After the initial value of the Bench Set value is Set, the first person slowly adjusts the pressure reducing valve 1 to increase the pressure to the maximum value of the Bench Set value, and the second person tests the action distance of the pneumatic rod 4 until the two persons cooperate to check that the moving distance under the pressure is consistent with the mechanical stroke of the valve 6.
According to the field conventional Bench Set value setting process, the following 4 problems exist to influence the adjustment precision of the Bench Set value: 1) the pressure of the pressure reducing valve is increased by the first person, so that the pressure is difficult to increase at a constant speed; 2) the second person needs to keep staring at the pneumatic rod all the time, sometimes the action state of the pneumatic rod is difficult to capture, and the phenomenon that the pneumatic rod is actually moved but is found later sometimes happens; 3) two persons observe the pressure meter and the pneumatic rod respectively, so that the synchronization of the indication of the pressure meter and the motion of the pneumatic rod is difficult to realize, and the synchronization of the pressure and the motion of the pneumatic rod can be realized only by matching for many times or even dozens of times; 4) a steel plate ruler is used for valve stroke testing, and certain errors exist. In addition, the field environment is complex, and there is a risk of finger-clamping of personnel due to communication or pressure relief valve failure.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in that, to prior art's defect, a pneumatic control valve Bench value adjustment testing arrangement is provided.
The utility model provides a technical scheme that its technical problem adopted is: the method comprises the following steps of constructing a pneumatic regulating valve Bench Set value adjusting and testing device, wherein the pneumatic regulating valve comprises a diaphragm air cavity, a pneumatic rod and a spring sleeved on the pneumatic rod, and is characterized in that the adjusting and testing device comprises an air source device, a sensing device, a transmission device, a control device and a power supply device;
the air source device comprises an electric proportional valve communicated with an external compressed air source and the diaphragm air cavity;
the sensing device comprises an air pressure sensor which is communicated with the diaphragm air cavity and used for sensing a pressure value, and a displacement sensor which is arranged on the pneumatic rod and used for sensing a displacement value of the pneumatic rod in the process that the spring is compressed;
the transmission device comprises a collector which is in communication connection with the air pressure sensor and the displacement sensor;
the control device comprises a controller in communication connection with the electric proportional valve and an upper computer in communication connection with the collector and the controller.
Preferably, pneumatic control valve Bench Set value adjustment testing arrangement in, air supply unit still include with the air supply input interface that electric proportional valve air supply input end is connected and with the air supply output interface that electric proportional valve air supply output end is connected.
Preferably, pneumatic control valve Bench Set value adjustment testing arrangement in, the air supply unit is still including locating electric proportional valve air supply input end is used for purifying air supply's filter.
Preferably, pneumatic control valve Bench Set value adjustment testing arrangement in, the air supply unit is still including locating the barometer of electric proportional valve air supply input.
Preferably, pneumatic control valve Bench Set value adjustment testing arrangement in, air supply unit is still including locating the digital display manometer of electric proportional valve air supply input.
Preferably, in the pneumatic regulating valve Bench Set value adjusting and testing device of the present invention, the transmission device further comprises a wireless transmission unit and/or a wired transmission interface connected to the collector;
the upper computer is in communication connection with the collector through the wireless transmission unit and/or the wired transmission interface.
Preferably, in the pneumatic control valve Bench Set value adjustment testing device of the present invention, the control device further comprises a control signal input interface connected to the controller;
the upper computer is in communication connection with the controller through the control signal input interface.
Preferably, pneumatic control valve Bench Set value adjustment testing arrangement in, the air supply unit the baroceptor transmission device controller and power supply unit are integrated in a host computer case.
Preferably, pneumatic control valve Bench Set value adjustment testing arrangement in, displacement sensor through G type press from both sides can dismantle connect in on the pneumatic stem.
Preferably, in the pneumatic regulating valve Bench Set value adjustment testing device of the present invention, the power supply device includes a battery and/or an external power source interface.
Through implementing the utility model discloses, following beneficial effect has:
the utility model can realize the gas supply to the diaphragm air cavity at a uniform speed, and realize the stable action of the pneumatic rod; the device can synchronously acquire two data of an air pressure test and a pneumatic rod stroke action test, record and reserve the data in a chart form, can visually express the performance of the spring Bench Set value of the current pneumatic actuating mechanism, and is convenient for trend analysis of the performance of the equipment in the follow-up process; the adjustment and the test of the spring Bench value of the pneumatic actuating mechanism can be completed by only one person, and the adjustment, the test and the maintenance of the Bench value can be efficiently completed due to the portability and the effectiveness of the operation; the method has the advantages that the high-precision air pressure sensor and the high-precision displacement sensor are adopted, and the final Bench Set value test and adjustment are also necessarily high in precision; the adjusting efficiency of the field Bench Set value is improved; the safety risk in the conventional Bench Set value setting process is reduced; the maintenance quality of the regulating valve is improved; the basis of trend analysis is provided for optimizing the maintenance outline of the regulating valve; unnecessary maintenance can be avoided through on-line detection, and the maintenance cost of equipment is reduced.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
FIG. 1 is a diagram of a conventional setting method of Bench Set values;
FIG. 2 is a diagram of the pneumatic control valve Bench Set value adjustment testing device of the present invention;
fig. 3 is a unit composition diagram of the upper computer of the present invention.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "upper", "lower", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. are configured and operated in specific directions based on the directions or positional relationships shown in the drawings, and are only for convenience of describing the present invention, but do not indicate that the device or element referred to must have a specific direction, and thus, should not be construed as limiting the present invention.
The utility model discloses a pneumatic control valve Bench Set value adjustment testing arrangement, as shown in fig. 1, this pneumatic control valve includes pneumatic actuator, and this pneumatic actuator includes that diaphragm air chamber 3, pneumatic stem 4 and cover establish spring 5 on pneumatic stem 4. Wherein a first end of the pneumatic rod 4 is connected with a diaphragm which divides the diaphragm air chamber 3 into a diaphragm upper air chamber 31 and a diaphragm lower air chamber 32. Wherein this pneumatic control valve can be the pneumatic open type pneumatic control valve, and air cavity 32 admits air under the diaphragm, and when pressure increased, pneumatic rod 4 moved up, and valve 6 opened, nevertheless if the small value of the Bench Set value of spring 5 is too big, then the untimely condition of opening can appear. When the air cavity 32 under the diaphragm loses air and the pressure is reduced, the pneumatic rod 4 moves downwards and the valve 6 is closed, but if the small value of the Bench Set value of the spring 5 is too small, the situation that the valve is not closed tightly can occur. In some embodiments, the pneumatic regulator valve may also be an air-off type pneumatic regulator valve.
Therefore, the utility model discloses a this pneumatic control valve Bench Set value adjustment testing arrangement, including air supply unit, sensing device, transmission device, controlling means and power supply unit.
Specifically, as shown in fig. 2, in the present embodiment, the air supply means includes an electric proportional valve communicating with an external compressed air source and the diaphragm air chamber 3. The electric proportional valve adjusts the cross-sectional area of the valve core according to the magnitude of the control signal, thereby adjusting the pressure output to the diaphragm air chamber 3. The utility model discloses an adopt electric proportional valve, can realize realizing the diaphragm air cavity air feed to pneumatic execution result with at the uniform velocity speed, realize that the pneumatic stem moves steadily. The diaphragm air chamber 3 may be a lower diaphragm air chamber 32 according to an air-open type pneumatic control valve, or may be an upper diaphragm air chamber 31 according to an air-close type pneumatic control valve.
The air source device also comprises an air source input interface connected with the air source input end of the electric proportional valve and an air source output interface connected with the air source output end of the electric proportional valve, the air source input interface is connected with an external SAT air source through an air pipe, and the air source output interface is connected with the diaphragm air cavity 3 through an air pipe.
In order to eliminate impurities in the SAT gas source medium, the gas source device further comprises a filter for purifying the gas source, which is arranged at the gas source input end of the electric proportional valve. In some embodiments, the filter is a filter valve.
In order to display the air supply pressure of the external air source, the air source device also comprises an air pressure meter arranged at the air source input end of the electric proportional valve. And, in order to can more audio-visual reading pressure value, can also judge whether the barometer is unusual through the mode of mutual contrast, consequently this air supply unit still includes the digital display manometer of locating electric proportional valve air supply input end. Completely, an external compressed air source is input into the diaphragm air cavity 3 after passing through the filter valve and the electric proportional valve, and an air pressure gauge and a digital display pressure gauge are arranged between the filter valve and the electric proportional valve.
In the present embodiment, the sensing means includes an air pressure sensor for sensing a pressure value communicated with the diaphragm air chamber 3, and a displacement sensor provided on the air rod 4 for sensing a displacement value of the air rod 4 during compression of the spring 5. In some embodiments, the air pressure sensor may communicate with the diaphragm upper air chamber 31 or the diaphragm lower air chamber 32 depending on the type of pneumatic regulator valve. The displacement sensor can be detachably connected to the pneumatic rod 4 through a G-shaped clamp, and in other embodiments, the displacement sensor can be fixed on the pneumatic rod 4 through screwing, bonding and other methods. The utility model discloses an adopt baroceptor and the displacement sensor of high accuracy, make the final Bench Set value test and the adjustment of going on also must be high accurate.
In this embodiment, the transmission device includes a collector in communication connection with the air pressure sensor and the displacement sensor, and a wireless transmission unit and/or a wired transmission interface connected with the collector. In some embodiments, the wireless transmission unit is a WIFI unit, and the wired transmission interface is an Ethernet network interface, both of which are used to transmit the collected air pressure value and displacement value. In this embodiment, the air pressure sensor is connected with the collector through wired communication, and is connected with the displacement sensor through wireless communication.
In this embodiment, the control device includes a controller connected in communication with the electric proportional valve, and an upper computer connected in communication with the collector and the controller. In some embodiments, the control device further comprises a control signal input interface connected with the controller, and the upper computer is in communication connection with the controller through the control signal input interface and sends a control signal to the controller, so that the controller controls the output air pressure of the electric proportional valve according to the control signal. And the upper computer is also in communication connection with the collector through a wireless transmission unit and/or a wired transmission interface to acquire the pressure value and the displacement value acquired by the collector.
In this embodiment, the power supply means comprises a battery and/or an external power interface. In some embodiments, the external power interface is connected with a 24V alternating current adapter power supply to charge a battery or supply power for the electric proportional valve, the controller, the collector, the digital display pressure gauge and the air pressure sensor.
In some embodiments, the air source device, the air pressure sensor, the transmission device, the controller and the power supply device can be integrated in a host case, and the host computer is independent from the host case. The upper computer can be a notebook computer, a desktop computer, a handheld terminal and the like, and relevant information of the Bench Set value is recorded in advance by the upper computer and comprises a BS minimum value, a BS maximum value, an air supply pressure value, a diaphragm area, a valve rod diameter and the like. The upper computer controls the pressure output to the diaphragm air cavity 3 by controlling the input signal of the electric proportional valve, collects the pressure value of the diaphragm air cavity 3 and the displacement value of the pneumatic rod 4 in the process that the spring 5 in the pneumatic actuating mechanism is compressed, synthesizes an air pressure-displacement test curve to analyze and calculate the Bench Set value of the spring 5, and adjusts the pretightening force of the spring 5 according to a given standard range, so that the aim of accurately setting the Bench Set value of the pneumatic adjusting valve is fulfilled, the recording and the gear keeping can be carried out in a visual air pressure-displacement chart form, a report is automatically generated, the performance of the current Bench Set value of the pneumatic actuating mechanism can be visually expressed, and the follow-up trend analysis on the performance of equipment is facilitated. In some embodiments, the unit composition of the upper computer is as shown in fig. 3, and includes a valve information editing unit, a sensor information editing unit, a BS value adjusting unit for adjusting a pressure value under a preset standard displacement value, a BS value testing unit, a data display and analysis unit, a report generating unit, and a control signal calibration unit.
It should be noted that the pressure value of the diaphragm air chamber 3 measured by the air pressure sensor is the Bench Set value, the Bench Set minimum value is the Bench Set value when the pneumatic rod starts to move, and the Bench Set maximum value and the pneumatic rod displacement value are tested and compared with the pressure value under the standard displacement value to judge whether the measured Bench Set value is too large.
In some embodiments, the pneumatic regulator valve further comprises a valve stem, and the valve stem and the pneumatic stem are connected or disconnected. And the utility model discloses can realize the Bench Set value test under connection or non-connection state. In the connection state, because the valve rod has friction force, the value obtained by adding the collected pressure value in the opening process and the collected pressure value in the closing process and dividing the value by 2 and the displacement value are used for analysis and processing. In the non-connection state, the collected pressure value and displacement value can be directly used for analysis and processing.
Through implementing the utility model discloses, following beneficial effect has:
the utility model can realize the gas supply to the diaphragm air cavity at a uniform speed, and realize the stable action of the pneumatic rod; the device can synchronously acquire two data of an air pressure test and a pneumatic rod stroke action test, record and reserve the data in a chart form, can visually express the performance of the spring Bench Set value of the current pneumatic actuating mechanism, and is convenient for trend analysis of the performance of the equipment in the follow-up process; the adjustment and the test of the spring Bench value of the pneumatic actuating mechanism can be completed by only one person, and the adjustment, the test and the maintenance of the Bench value can be efficiently completed due to the portability and the effectiveness of the operation; the method has the advantages that the high-precision air pressure sensor and the high-precision displacement sensor are adopted, and the final Bench Set value test and adjustment are also necessarily high in precision; the adjusting efficiency of the field Bench Set value is improved; the safety risk in the conventional Bench Set value setting process is reduced; the maintenance quality of the regulating valve is improved; the basis of trend analysis is provided for optimizing the maintenance outline of the regulating valve; unnecessary maintenance can be avoided through on-line detection, and the maintenance cost of equipment is reduced.
It is to be understood that the foregoing examples merely represent preferred embodiments of the present invention, and that the description thereof is more specific and detailed, but not intended to limit the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (10)
1. A pneumatic regulating valve Bench Set value adjusting and testing device comprises a diaphragm air cavity (3), a pneumatic rod (4) and a spring (5) sleeved on the pneumatic rod (4), and is characterized in that the adjusting and testing device comprises an air source device, a sensing device, a transmission device, a control device and a power supply device;
wherein the air source device comprises an electric proportional valve communicated with an external compressed air source and the diaphragm air cavity (3);
the sensing device comprises an air pressure sensor which is communicated with the diaphragm air cavity (3) and used for sensing a pressure value, and a displacement sensor which is arranged on the pneumatic rod (4) and used for sensing a displacement value of the pneumatic rod (4) in the process that the spring (5) is compressed;
the transmission device comprises a collector which is in communication connection with the air pressure sensor and the displacement sensor;
the control device comprises a controller in communication connection with the electric proportional valve and an upper computer in communication connection with the collector and the controller.
2. The pneumatic regulating valve Bench Set value adjustment testing device of claim 1, wherein the air source device further comprises an air source input interface connected with the air source input end of the electric proportional valve and an air source output interface connected with the air source output end of the electric proportional valve.
3. The pneumatic regulating valve Bench Set value adjustment testing device of claim 1, wherein the air supply device further comprises a filter for purifying the air supply, which is arranged at the air supply input end of the electric proportional valve.
4. The pneumatic regulating valve Bench Set value adjusting test device of claim 1, wherein the air supply device further comprises an air pressure gauge arranged at an air supply input end of the electric proportional valve.
5. The pneumatic regulating valve Bench Set value adjusting and testing device as claimed in claim 1, wherein the air source device further comprises a digital display pressure gauge arranged at an air source input end of the electric proportional valve.
6. The pneumatic regulating valve Bench Set value adjusting and testing device of claim 1, wherein the transmission device further comprises a wireless transmission unit and/or a wired transmission interface connected with the collector;
the upper computer is in communication connection with the collector through the wireless transmission unit and/or the wired transmission interface.
7. The pneumatic regulating valve Bench Set value adjustment testing device according to claim 1, wherein the control device further comprises a control signal input interface connected with the controller;
the upper computer is in communication connection with the controller through the control signal input interface.
8. The pneumatic regulator Bench Set value adjustment testing device of claim 1, wherein the air source device, the air pressure sensor, the transmission device, the controller and the power supply device are integrated into a host computer case.
9. The pneumatic regulating valve Bench Set value adjustment testing device of claim 1, wherein the displacement sensor is detachably connected to the pneumatic rod (4) through a G-type clamp.
10. The pneumatic regulator Bench Set value adjustment test device of claim 1, wherein the power supply device comprises a battery and/or an external power interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120398774.XU CN214309467U (en) | 2021-02-23 | 2021-02-23 | Pneumatic control valve Bench Set value adjustment testing arrangement |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120398774.XU CN214309467U (en) | 2021-02-23 | 2021-02-23 | Pneumatic control valve Bench Set value adjustment testing arrangement |
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| CN214309467U true CN214309467U (en) | 2021-09-28 |
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| CN202120398774.XU Active CN214309467U (en) | 2021-02-23 | 2021-02-23 | Pneumatic control valve Bench Set value adjustment testing arrangement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116678611A (en) * | 2023-07-28 | 2023-09-01 | 深圳市南海核电技术有限公司 | Valve analysis method, device, equipment and storage medium |
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2021
- 2021-02-23 CN CN202120398774.XU patent/CN214309467U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116678611A (en) * | 2023-07-28 | 2023-09-01 | 深圳市南海核电技术有限公司 | Valve analysis method, device, equipment and storage medium |
| CN116678611B (en) * | 2023-07-28 | 2024-03-08 | 深圳市南海核电技术有限公司 | Valve analysis method, device, equipment and storage medium |
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