CN215833155U - Constant water pressure test system - Google Patents
Constant water pressure test system Download PDFInfo
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- CN215833155U CN215833155U CN202121553170.4U CN202121553170U CN215833155U CN 215833155 U CN215833155 U CN 215833155U CN 202121553170 U CN202121553170 U CN 202121553170U CN 215833155 U CN215833155 U CN 215833155U
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Abstract
The utility model relates to a constant water pressure test system, which comprises: the device comprises a frequency converter, a water pump, a programmable controller, a pressure detection module and a pressure regulation module; the pressure detection module is suitable for detecting pressure data of the water pump and sending the pressure data to the programmable controller; the programmable controller is suitable for controlling the pressure adjusting module to release or pressurize the water pump; the programmable controller is also suitable for adjusting the working frequency of the water pump by controlling the output frequency of the frequency converter; according to the utility model, the pressure data of the water pump is detected in real time through the pressure detection module, the pressure regulation module is controlled by the programmable controller to pressurize or release the water pump, and a stable pressure-time curve is finally obtained by adjusting the frequency of the frequency converter, so that the intelligent constant water pressure test is realized, the test efficiency is improved, and the operation difficulty is reduced.
Description
Technical Field
The utility model belongs to the technical field of hydrostatic tests, and particularly relates to a constant hydrostatic test system.
Background
The hydraulic test is a test for testing the water pressure in the pipeline, the water pressure in the pipeline is slowly increased to the specified test pressure and stabilized for 30min in the pre-test stage, water can be injected for pressure compensation if the pressure is reduced, and the pressure compensation is not higher than the test pressure; checking whether water leakage and damage occur at the pipeline interface, fittings and the like; and (3) stopping pressure test in time when water leakage and damage occur, finding out reasons, taking corresponding measures and then testing the pressure again. And (3) stopping water injection and pressure compensation in the main test stage, stabilizing for 15min, keeping the test pressure to the working pressure and keeping the constant pressure for 30min when the pressure drop does not exceed the allowed pressure drop value after 15min, and performing appearance inspection to ensure that the hydrostatic test is qualified if no water leakage phenomenon exists.
Traditional hydrostatic test adopts artifical test water pressure, carries out artifical water injection repression, drains the pressure release, and is not only inefficient to complex operation has certain danger.
Therefore, it is necessary to develop a new constant hydrostatic test system to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a constant water pressure test system to solve the problem of how to realize automatic constant water pressure test by intelligently adjusting the water pressure of a water pump.
In order to solve the above technical problem, the present invention provides a constant water pressure test system, comprising: the device comprises a frequency converter, a water pump, a programmable controller, a pressure detection module and a pressure regulation module; the output end of the frequency converter is connected with the water pump, the frequency converter, the pressure detection module and the pressure regulation module are electrically connected with the programmable controller, and the pressure regulation module is connected with the water pump; the frequency converter is suitable for driving the water pump to work; the pressure detection module is suitable for detecting pressure data of the water pump and sending the pressure data to the programmable controller; when the pressure data is higher than a water pressure set threshold value, the programmable controller is suitable for controlling the pressure adjusting module to release pressure of the water pump; when the pressure data is lower than a water pressure set threshold value, the programmable controller is suitable for controlling the pressure adjusting module to pressurize the water pump; and the programmable controller is also suitable for adjusting the working frequency of the water pump by controlling the output frequency of the frequency converter.
In one embodiment, the frequency converter is connected with a three-phase alternating current, and a three-phase air switch is arranged in the three-phase alternating current, namely, the frequency converter is controlled to be powered on/powered off through the three-phase air switch.
In one embodiment, a switching power supply is further arranged on the three-phase alternating current to supply power to the programmable controller, the pressure detection module and the pressure regulation module.
In one embodiment, the pressure detection module comprises: at least one pressure sensor arranged on the water pump; the pressure sensor is suitable for detecting pressure data of the water pump and sending the pressure data to the programmable controller.
In one embodiment, the pressure regulation module comprises: at least one path of loading valve and pressure release valve respectively arranged at the water inlet pipe and the water outlet pipe of the water pump; the programmable controller is suitable for controlling the pressure release valve to release pressure of the water pump, and the programmable controller is suitable for controlling the loading valve to pressurize the water pump.
In one embodiment, three paths and three pairs of corresponding loading valves and corresponding pressure relief valves are arranged at the water inlet pipe and the water outlet pipe of the water pump respectively.
In one embodiment, the programmable controller controls the pressure relief valve to relieve the pressure of the water pump or controls the loading valve to pressurize the water pump to generate a fixed gain for the water pump, that is, the programmable controller is adapted to adjust the output frequency of the frequency converter according to the fixed gain to adjust the operating frequency of the water pump.
In one embodiment, the programmable controller is connected with a touch screen; the touch screen is suitable for displaying a pressure time curve of the water pump operation sent by the programmable controller.
In one embodiment, the programmable controller is connected with the water cylinder limiting module; the programmable controller is suitable for acquiring a water tank liquid level overrun signal through the water tank limiting module so as to control the water pump to stop running.
In one embodiment, the programmable controller is connected with a frequency converter fault alarm module; the programmable controller is suitable for obtaining a frequency converter fault signal through frequency converter fault alarm so as to control the water pump to stop running.
The intelligent constant water pressure test system has the advantages that the pressure data of the water pump is detected in real time through the pressure detection module, the pressure regulation module is controlled by the programmable controller to pressurize or release the pressure of the water pump, and a stable pressure time curve is finally obtained by adjusting the frequency of the frequency converter, so that the intelligent constant water pressure test is realized, the test efficiency is improved, and the operation difficulty is reduced.
Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a functional block diagram of the constant water pressure test system of the present invention;
FIG. 2 is a circuit diagram of the frequency converter of the present invention;
FIG. 3 is a circuit diagram of the programmable controller of the present invention;
fig. 4 is a circuit diagram of a water cylinder limiting module and a frequency converter fault alarm module of the utility model.
In the figure:
the device comprises a frequency converter D700, a water pump G0, a three-phase air switch F1, a switching power supply V1, a touch screen A0, a programmable controller A1, an AD converter A2 and a pressure sensor SP 1.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
FIG. 1 is a functional block diagram of the constant water pressure test system of the present invention.
In the present embodiment, as shown in fig. 1, the present embodiment provides a constant water pressure test system, which includes: the device comprises a frequency converter D700, a water pump G0, a programmable controller A1, a pressure detection module and a pressure regulation module; the output end of the frequency converter D700 is connected with a water pump G0, the frequency converter D700, the pressure detection module and the pressure regulation module are electrically connected with a programmable controller A1, and the pressure regulation module is connected with the water pump G0; the frequency converter D700 is suitable for driving the water pump G0 to work; the pressure detection module is suitable for detecting pressure data of the water pump G0 and sending the pressure data to the programmable controller A1; when the pressure data is higher than a water pressure set threshold value, the programmable controller A1 is suitable for controlling a pressure regulating module to discharge the pressure of the water pump G0; when the pressure data is lower than a water pressure set threshold value, the programmable controller A1 is suitable for controlling a pressure regulating module to pressurize a water pump G0; and the programmable controller A1 is also suitable for adjusting the working frequency of the water pump G0 by controlling the output frequency of the frequency converter D700.
In the embodiment, the frequency converter D700 adopts a Mitsubishi D700 frequency converter, and the programmable controller A1 adopts a dvp24es2 programmable controller.
In this embodiment, the pressure data of the water pump G0 is detected in real time by the pressure detection module in this embodiment, the programmable controller a1 controls the pressure regulation module to pressurize or release the pressure of the water pump G0, and a stable pressure-time curve is finally obtained by adjusting the frequency of the frequency converter D700, so that the intelligent constant water pressure test is realized, the test efficiency is improved, and the operation difficulty is reduced.
Fig. 2 is a circuit diagram of the frequency converter of the present invention.
In the present embodiment, as shown in fig. 2, the inverter D700 is connected to a three-phase ac power, and a three-phase air switch F1 is disposed in the three-phase ac power, that is, the inverter D700 is controlled to be powered on/powered off through the three-phase air switch F1.
In this embodiment, three-phase alternating current adopts commercial power three-phase 380V alternating current, gets lost control by three-phase air switch F1, prevents that the short circuit in the circuit from appearing the heavy current in the twinkling of an eye and can directly cut off the power supply end, increases the security.
In this embodiment, a switching power supply V1 is further disposed on the three-phase ac power to supply power to the programmable controller a1, the pressure detection module, and the pressure adjustment module.
In the embodiment, the programmable controller a1 and the frequency converter D700 communicate through a CAN bus, and the single-phase 220V is used for supplying power to the switching power supply V1, so as to provide a stable 24V power supply for the equipment to prevent the equipment from being damaged, and the data error is large and the control precision is reduced.
In this embodiment, a three-phase alternating current is fed, a 5-core cable with a wire diameter of 2 square millimeters is fed between the frequency converter D700 and the water pump G0, and a single-core cable with a wire diameter of 0.5 square millimeters is fed between the programmable controller a1, the pressure detection module and the pressure adjustment module.
Fig. 3 is a circuit diagram of a programmable controller of the present invention.
In this embodiment, as shown in fig. 3, the pressure detection module includes: at least one pressure sensor SP1 provided on the water pump G0; the pressure sensor SP1 is adapted to detect pressure data of the water pump G0 and send the data to the programmable controller a 1.
In the present embodiment, the pressure sensor SP1 transmits the 4-20ma signal to the programmable controller a1 through the AD converter a 2.
In this embodiment, the pressure adjustment module includes: at least one path of loading valve and pressure release valve respectively arranged at the water inlet pipe and the water outlet pipe of the water pump G0; the programmable controller A1 is suitable for controlling the pressure relief valve to relieve the pressure of the water pump G0, and the programmable controller A1 is suitable for controlling the loading valve to pressurize the water pump G0.
In the embodiment, three pairs of three corresponding loading valves and three corresponding pressure relief valves are arranged at the water inlet pipe and the water outlet pipe of the water pump G0 respectively.
In the present embodiment, a charge valve Y1, a charge valve Y3, a charge valve Y5, a relief valve Y2, a relief valve Y4, a relief valve Y5, and a total relief valve Y0 are provided, and full pressure start is performed by a switch SB1, test line operation No. 1 is performed by the switch SB2, test line stop No. 1 is performed by the switch SB3, test line operation No. 2 is performed by the switch SB4, test line stop No. 2 is performed by the switch SB5, test line operation No. 3 is performed by the switch SB6, test line stop No. 3 is performed by the switch SB7, and total relief is performed by the switch SB 8.
In this embodiment, the programmable controller a1 controls the pressure relief valve to relieve pressure in the water pump G0 or controls the loading valve to pressurize the water pump G0 to generate a fixed gain for the water pump G0, i.e., the programmable controller a1 is adapted to adjust the output frequency of the inverter D700 according to the fixed gain to adjust the operating frequency of the water pump G0.
In this embodiment, the programmable controller a1 is connected to the touch screen a0, so that the device is more intuitive and highly controllable; the touch screen A0 is suitable for displaying the pressure time curve of the water pump G0 sent by the programmable controller A1, and finally a stable pressure time curve can be obtained on the touch screen A0.
In the embodiment, a programmable controller a1 with high reliability and stability is used for logic control and a data exchange center, and is communicated with an interface of a touch screen a0, so that the method is more intuitive and has high controllability, signals obtained by a pressure sensor SP1 of a 4-20ma signal are used for data analysis, a loading valve and a pressure relief valve are logically closed and controlled by a main pressure relief valve Y0 and A3-way 3, the frequency of a frequency converter D700 is adjusted by fixed gain, and finally a stable pressure-time curve can be obtained on the touch screen a 0.
Fig. 4 is a circuit diagram of a water cylinder limiting module and a frequency converter fault alarm module of the utility model.
In this embodiment, as shown in fig. 4, the programmable controller a1 is connected to a water cylinder limit module; the programmable controller A1 is suitable for obtaining a water tank liquid level overrun signal through a water tank limiting module to control the water pump G0 to stop running, and safety of equipment and users can be protected.
In the embodiment, the programmable controller a1 is connected with a fault alarm module of the frequency converter D700; the programmable controller A1 is suitable for obtaining a fault signal of the frequency converter D700 through fault alarm of the frequency converter D700 so as to control the water pump G0 to stop running, and the safety of equipment and users can be protected.
In conclusion, the pressure detection module is used for detecting the pressure data of the water pump in real time, the programmable controller is used for controlling the pressure regulation module to pressurize or release the water pump, and the frequency of the frequency converter is adjusted to finally obtain a stable pressure-time curve, so that the intelligent constant water pressure test is realized, the test efficiency is improved, and the operation difficulty is reduced.
The components selected for use in the present application (components not illustrated for specific structures) are all common standard components or components known to those skilled in the art, and the structure and principle thereof can be known to those skilled in the art through technical manuals or through routine experimentation. Moreover, the software programs referred to in the present application are all prior art, and the present application does not relate to any improvement of the software programs.
In the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations can be made by the worker in the light of the above teachings without departing from the spirit of the utility model. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. A constant hydrostatic test system, comprising:
the device comprises a frequency converter, a water pump, a programmable controller, a pressure detection module and a pressure regulation module; wherein
The output end of the frequency converter is connected with the water pump, the frequency converter, the pressure detection module and the pressure regulation module are electrically connected with the programmable controller, and the pressure regulation module is connected with the water pump;
the frequency converter is suitable for driving the water pump to work;
the pressure detection module is suitable for detecting pressure data of the water pump and sending the pressure data to the programmable controller;
when the pressure data is higher than a water pressure set threshold value, the programmable controller is suitable for controlling the pressure adjusting module to release pressure of the water pump;
when the pressure data is lower than a water pressure set threshold value, the programmable controller is suitable for controlling the pressure adjusting module to pressurize the water pump; and
the programmable controller is also adapted to adjust the operating frequency of the water pump by controlling the output frequency of the frequency converter.
2. The constant hydraulic pressure test system as claimed in claim 1,
the frequency converter is connected with three-phase alternating current, and a three-phase air switch is arranged in the three-phase alternating current, namely
And controlling the power on/off of the frequency converter through a three-phase air switch.
3. The constant hydraulic pressure test system as claimed in claim 2,
and the three-phase alternating current is also provided with a switching power supply to supply power to the programmable controller, the pressure detection module and the pressure regulation module.
4. The constant hydraulic pressure test system as claimed in claim 1,
the pressure detection module includes: at least one pressure sensor arranged on the water pump;
the pressure sensor is suitable for detecting pressure data of the water pump and sending the pressure data to the programmable controller.
5. The constant hydraulic pressure test system as claimed in claim 1,
the pressure regulating module includes: at least one path of loading valve and pressure release valve respectively arranged at the water inlet pipe and the water outlet pipe of the water pump;
the programmable controller is suitable for controlling the pressure release valve to release pressure of the water pump, and the programmable controller is suitable for controlling the loading valve to pressurize the water pump.
6. The constant hydraulic pressure test system as claimed in claim 5,
three paths and three pairs of corresponding loading valves and corresponding pressure relief valves are arranged at the water inlet pipe and the water outlet pipe of the water pump respectively.
7. The constant hydraulic pressure test system as claimed in claim 5,
the programmable controller controls the pressure relief valve to relieve pressure of the water pump or controls the loading valve to pressurize the water pump to generate a fixed gain for the water pump, i.e.
The programmable controller is adapted to adjust the output frequency of the frequency converter in accordance with the fixed gain to adjust the operating frequency of the water pump.
8. The constant hydraulic pressure test system as claimed in claim 1,
the programmable controller is connected with the touch screen;
the touch screen is suitable for displaying a pressure time curve of the water pump operation sent by the programmable controller.
9. The constant hydraulic pressure test system as claimed in claim 1,
the programmable controller is connected with the water cylinder limiting module;
the programmable controller is suitable for acquiring a water tank liquid level overrun signal through the water tank limiting module so as to control the water pump to stop running.
10. The constant hydraulic pressure test system as claimed in claim 1,
the programmable controller is connected with the frequency converter fault alarm module;
the programmable controller is suitable for obtaining a frequency converter fault signal through frequency converter fault alarm so as to control the water pump to stop running.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121553170.4U CN215833155U (en) | 2021-07-09 | 2021-07-09 | Constant water pressure test system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121553170.4U CN215833155U (en) | 2021-07-09 | 2021-07-09 | Constant water pressure test system |
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| CN215833155U true CN215833155U (en) | 2022-02-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117906937A (en) * | 2024-03-19 | 2024-04-19 | 航天晨光股份有限公司 | Hydrostatic test method, test system and storage medium |
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2021
- 2021-07-09 CN CN202121553170.4U patent/CN215833155U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117906937A (en) * | 2024-03-19 | 2024-04-19 | 航天晨光股份有限公司 | Hydrostatic test method, test system and storage medium |
| CN117906937B (en) * | 2024-03-19 | 2024-05-17 | 航天晨光股份有限公司 | Hydrostatic test method, test system and storage medium |
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