CN111638670B - Multi-sensor centralized acquisition system of hydropower station - Google Patents
Multi-sensor centralized acquisition system of hydropower station Download PDFInfo
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- CN111638670B CN111638670B CN202010468130.3A CN202010468130A CN111638670B CN 111638670 B CN111638670 B CN 111638670B CN 202010468130 A CN202010468130 A CN 202010468130A CN 111638670 B CN111638670 B CN 111638670B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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Abstract
The invention discloses a hydropower station multi-sensor centralized acquisition system which comprises an embedded host (1), wherein a plurality of detection sensors are connected with the external of the embedded host (1) in a wired or wireless manner; the detection sensor comprises one or more of a temperature sensor (2), a vibration sensor (3), a noise sensor (4), a flow sensor (5) and a camera (6), and the exterior of each detection sensor is fixed at a detection position through a sensor mounting component. The invention can realize data detection and collection of a plurality of detection points at a long distance, can finish the installation and fixation of the sensor at various positions, and has the characteristics of convenient installation of the sensor, high detection efficiency and good detection effect.
Description
Technical Field
The invention relates to an auxiliary detection system for a hydropower station, in particular to a multi-sensor centralized acquisition system for the hydropower station.
Background
The generator and the water turbine of the hydropower station need to carry out omnibearing detection on an electric power part and a mechanical part when in operation, wherein detection points aiming at important parts are considered in the early design stage, and a detection sensor or a corresponding installation structure is preset outside the device so as to be convenient for field installation when needed. However, when a power station worker analyzes daily operation data and abnormal conditions, extra detection points are often needed to be added to obtain data at any position, such as the temperature and flow of a certain pipeline, vibration of a certain plane, working noise in a certain space, and the like. This requires power plant personnel to temporarily add various sensors outside of any equipment on site. However, the current detection method is limited by the position and distance of the detection point, so that the local device can be detected only in a small range, and all detection data can be obtained by means of multiple detections at different positions. The method has low detection efficiency, and the obtained data are not reflected in the same time, so that the detection effect is easily reduced due to stability problems or external interference, the accuracy of the detection value is reduced, and certain misleading items exist.
The sensor commonly used for detection generally comprises a host and a probe, wherein the host is hung outside equipment close to the probe when the sensor is used, and the probe is fixed and then is tightly attached to or inserted into the surface of the equipment such as a pipeline for detection. However, the sensing probes of different types have various structures, for example, the probe in the shape of the box body needs to be pressed and attached to the surface of the equipment through an anchor ear or an installation plate, the cylindrical probe needs to be vertically attached to the surface of the equipment after being fixed by an installation frame, and when the probe is installed, the probe like a temperature sensor needs to be installed in a high-altitude mode, so that the two probes are respectively arranged on the outer side of the equipment and inserted into the inner side of the equipment. However, the device with the temporarily added sensor does not have a corresponding fixed structure, and the fixed modes such as welding a bracket, opening a hole on site, gluing and the like have the disadvantages of high processing difficulty and long time consumption on one hand, and damage to the device or incapability of being limited by the device or environment on the other hand; the problem that power station personnel think different treatment methods and temporary materials by experience in the face of different installation environments during actual installation and even need to hold and fix the power station personnel at certain positions is caused, so that the sensor is difficult to install and the detection efficiency is low.
In addition, due to the characteristics of hydropower stations, the size of the equipment at the detection position is greatly different, for example, the outer diameter of the pipeline is different from DN 20-DN 1000, so that a plurality of installation parts matched with the sensor, such as hoops, are difficult to be applied to various installation environments, and the installation difficulty and stability of the sensor are further increased.
Therefore, the existing detection method for the temporary detection point of the hydropower station has the problems of difficult sensor installation, low detection efficiency and poor detection effect.
Disclosure of Invention
The invention aims to provide a hydropower station multi-sensor centralized acquisition system. The sensor has the characteristics of convenience in mounting, high detection efficiency and good detection effect.
The technical scheme of the invention is as follows: the hydropower station multi-sensor centralized acquisition system comprises an embedded host, wherein a plurality of detection sensors are connected with the outside of the embedded host in a wired or wireless manner; the detection sensors comprise one or more of a temperature sensor, a vibration sensor, a noise sensor, a flow sensor and a camera, and the exterior of each detection sensor is fixed at a detection position through a sensor mounting component.
Among the collection system is concentrated to aforementioned power station multisensor, embedded host computer connects the detection sensor through loRa wireless transmission module, is equipped with loRa wireless transmission module's receiving terminal on the embedded host computer, all is equipped with loRa wireless transmission module's transmitting terminal on every detection sensor.
In the hydropower station multi-sensor centralized acquisition system, the flow sensor is an ultrasonic non-contact flow sensor.
In the hydropower station multi-sensor centralized acquisition system, the embedded host and the detection sensor are externally connected with a mobile temporary power supply.
In the hydropower station multi-sensor centralized acquisition system, the sensor mounting assembly comprises a plurality of telescopic rods, the telescopic rods are connected with mounting pieces through hoops, and adjacent telescopic rods are connected with each other through limiting blocks; the limiting block comprises a first barrel and a second barrel which are connected in a rotating mode, the first barrel and the second barrel are connected in an elastic mode along the rotating direction, and round holes for connecting the telescopic rods are formed in the first barrel and the second barrel respectively.
In the multi-sensor centralized acquisition system for the hydropower station, the first barrel and the second barrel outside the round holes are both provided with the limit screws, and the end parts of the limit screws are attached to the side walls of the telescopic rods.
In the hydropower station multi-sensor centralized acquisition system, the first cylinder is provided with a circular fastener, the outer side of the end part of the circular fastener is provided with an annular stop block, the second cylinder is provided with a buckling groove matched with the circular fastener, the bottom of the buckling groove is provided with a limiting groove matched with the stop block, and the outer side of the buckling groove is provided with a strip-shaped wire slot; the circular fastener is sleeved with a torsion spring, one end of the torsion spring is buckled into the side wall of the first barrel through a pressing rod, and the other end of the torsion spring is buckled into a wire groove through a pressing rod.
In the multi-sensor centralized acquisition system for the hydropower station, the multi-sensor centralized acquisition system further comprises a pressing plate positioned at the end part of the telescopic rod, one side of the pressing plate is connected with the telescopic rod through a universal joint, and the other side of the pressing plate is provided with a magnetic sheet or an adhesive film.
Compared with the prior art, the invention has the following characteristics:
(1) the embedded host and the detection sensors are connected and matched, so that the detection sensors can be respectively arranged on equipment at different positions, and detection data are concentrated into the embedded host, so that power station personnel can receive detection parameters from a long distance at the central position of each detection point; meanwhile, by further limiting the wireless transmission module, the invention can simultaneously receive the data of the detection sensor within 5 kilometers, namely, the detection range required by the hydropower station in one-time data analysis can be met, the data error and the interference item caused by multiple detections are effectively avoided, and the detection accuracy and the detection efficiency are improved;
(2) when each detection sensor is installed, the installation of the sensor host and the probe can be simultaneously completed through the structural matching of the sensor installation assembly, the device has better applicability, can be suitable for various installation environments, and avoids the on-site exertion and temporary material taking of power station personnel during on-site installation, thereby reducing the installation difficulty of the detection sensor and further improving the detection efficiency of the device;
(3) through the matching of the limiting block, the telescopic rod and the torsion spring, the sensor mounting assembly can clamp external equipment when being fixed, and meanwhile, the clamping length and the clamping angle of the sensor mounting assembly can be adjusted, so that the sensor mounting assembly can be suitable for mounting surfaces with different sizes and shapes, and the applicability of the sensor mounting assembly and the mounting stability of the sensor mounting assembly are improved; after the telescopic rod is fixed, a stable rod body part can be formed outside the detection point, so that the fixing effect on the probe and the probe with the box body shape and the cylindrical shape can be achieved by matching the hoop and the mounting piece; meanwhile, the distance between the telescopic rod and the outer wall of the equipment can be adjusted when the telescopic rod is clamped, so that the probe of the temperature sensor can reach the optimal insertion position after being fixed, the installation difficulty of the sensor is further reduced, and the detection effect of the temperature sensor is improved;
(4) the sensor mounting assembly can be fixed on the outer wall of the vertical or large-radian equipment through the pressure plate at the end part of the telescopic rod, so that the requirement on a clamping environment is reduced, and the applicability of the invention is further improved; the mounting structure does not need secondary processing such as hole forming, welding and the like on the existing equipment, so that the damage to the equipment is effectively avoided, and the detection efficiency of the equipment is further improved;
therefore, the invention has the characteristics of convenient sensor installation, high detection efficiency and good detection effect.
Drawings
FIG. 1 is a schematic diagram of the connection of an embedded host and a detection sensor;
FIG. 2 is a schematic view of the installation of the sensor mounting assembly on a pipe;
FIG. 3 is a schematic structural diagram of a stopper;
FIG. 4 is an enlarged view of the line A of FIG. 3;
FIG. 5 is a schematic view of the mounting of the sensor mounting assembly on a flat surface.
The labels in the figures are: the device comprises an embedded host 1, a temperature sensor 2, a vibration sensor 3, a noise sensor 4, a flow sensor 5, a camera 6, a receiving end 7, an emitting end 8, a telescopic rod 9, a hoop 10, a mounting plate 11, a first barrel 12, a second barrel 13, a limiting screw 14, a torsion spring 15, a pressing plate 16, a circular fastener 121, a stop block 122, a buckling groove 131, a limiting groove 132 and a wire groove 133.
Detailed Description
The invention is further illustrated by the following figures and examples, which are not to be construed as limiting the invention.
Examples are given. The hydropower station multi-sensor centralized acquisition system is shown in figure 1 and comprises an embedded host 1, wherein a plurality of detection sensors are connected with the outside of the embedded host 1 in a wired or wireless manner; the detection sensors comprise one or more of a temperature sensor 2, a vibration sensor 3, a noise sensor 4, a flow sensor 5 and a camera 6, and the exterior of each detection sensor is fixed at a detection position through a sensor mounting component; the embedded host can select Raspberry Pi type, has various output modes, adopts a Linux system, and can support general document formats such as Txt, Doc and Exl and high-level applications such as databases.
Embedded host computer 1 connects the detection sensor through loRa wireless transmission module, is equipped with the receiving terminal 7 of loRa wireless transmission module on the embedded host computer 1, all is equipped with the transmitting terminal 8 of loRa wireless transmission module on every detection sensor.
The flow sensor 5 is an ultrasonic non-contact flow sensor.
The external parts of the embedded host 1 and the detection sensor are connected with a mobile temporary power supply, and one or more mobile temporary power supplies can be arranged according to the positions of the embedded host 1 and the detection sensor.
The sensor mounting assembly comprises a plurality of telescopic rods 9, mounting pieces 11 are connected to the telescopic rods 9 through hoops 10, and adjacent telescopic rods 9 are connected with each other through limiting blocks; the limiting block comprises a first barrel body 12 and a second barrel body 13 which are connected in a rotating mode, the first barrel body 12 is connected with the second barrel body 13 in an elastic mode along the rotating direction, and round holes for connecting the telescopic rods 9 are formed in the first barrel body 12 and the second barrel body 13 respectively.
And the first barrel 12 and the second barrel 13 on the outer sides of the round holes are both provided with a limit screw 14, and the end part of the limit screw 14 is attached to the side wall of the telescopic rod 9.
A circular fastener 121 is arranged on the first cylinder 12, an annular stop block 122 is arranged on the outer side of the end part of the circular fastener 121, a buckling groove 131 matched with the circular fastener 121 is arranged on the second cylinder 13, a limiting groove 132 matched with the stop block 122 is arranged at the bottom of the buckling groove 131, and a strip-shaped wire casing 133 is arranged on the outer side of the buckling groove 131; the circular fastener 121 is sleeved with a torsion spring 15, the outer diameter of the torsion spring 15 is smaller than the inner diameter of the fastening groove 131, one end of the torsion spring 15 is buckled into the side wall of the first cylinder 12, and the other end of the torsion spring 15 is buckled into the wire groove 133.
The telescopic device is characterized by further comprising a pressing plate 16 positioned at the end part of the telescopic rod 9, one side of the pressing plate 16 is connected with the telescopic rod 9 through a universal joint 17, and the other side of the pressing plate 16 is provided with a magnetic sheet or an adhesive film.
The working principle of the invention is as follows: when the invention is used, each detection sensor is fixed at each detection position through the sensor mounting component, then the detection sensor is connected with the embedded host 1, the detection sensor can send the detected operation data to the embedded host 1, and power station personnel observe the data through methods such as documents and the like after connecting external equipment with the embedded host 1 to complete analysis.
When the detection sensor is installed, the number and the length of the telescopic rods 9 are adjusted according to the appearance of the equipment installation surface, and meanwhile, the adjacent telescopic rods 9 are connected with each other through the limiting blocks, so that the telescopic rods 9 can be adjusted in angle through mutual rotation of the first barrel 12 and the second barrel 13. The telescopic rod 9 forms a certain clamping angle after being connected and bent and is sleeved outside the equipment, so that the sensor mounting assembly can be stably clamped on the surface of the equipment in a circular arc shape or with an included angle; because first barrel 12 and second barrel 13 are equipped with torsional spring 15 in the rotation junction, make telescopic link 9 can provide corresponding contractility to it through torsional spring 15 after opening, make telescopic link 9 can compress tightly the binding face of equipment after placing to guarantee that each probe can be stable after fixed be in the laminating position. After the telescopic rod 9 is fixed, the corresponding sensor host and the corresponding probe are respectively arranged on the telescopic rod 9 or the mounting sheet 11; the orientation of the mounting plate 11 can be adjusted when the probe is mounted, so that the sensing part of the probe and the equipment can be kept completely attached. Because the telescopic rod 9 is fixed by clamping, the distance between the telescopic rod 9 and the equipment can be adjusted by clamping positions, and therefore probes with different sizes can be completely attached to the surface of the equipment after being installed.
To the check out test set that is difficult to the clamping such as big radian or plane, power station personnel can also add at the tip of telescopic link 9 and establish clamp plate 16, carry out adhesion or magnetism through magnetic sheet or viscidity film on clamp plate 16 to the equipment surface to realize fixed effect. The invention can finish the installation and fixation of the detection sensor on most equipment surfaces, and meanwhile, the equipment or the sensor is not required to be processed for the second time during the installation, thereby avoiding the damage of the equipment or the sensor, reducing the corresponding processing technology and improving the detection efficiency of the invention.
Claims (5)
1. The multi-sensor centralized acquisition system of the hydropower station is characterized in that: the system comprises an embedded host (1), wherein a plurality of detection sensors are connected with the outside of the embedded host (1) in a wired or wireless manner; the detection sensors comprise one or more of a temperature sensor (2), a vibration sensor (3), a noise sensor (4), a flow sensor (5) and a camera (6), and the exterior of each detection sensor is fixed at a detection position through a sensor mounting component;
the embedded host (1) is connected with the detection sensors through the LoRa wireless transmission module, the embedded host (1) is provided with a receiving end (7) of the LoRa wireless transmission module, and each detection sensor is provided with a transmitting end (8) of the LoRa wireless transmission module;
the sensor mounting assembly comprises a plurality of telescopic rods (9), the telescopic rods (9) are connected with mounting pieces (11) through hoops (10), and adjacent telescopic rods (9) are connected with each other through limiting blocks; the limiting block comprises a first cylinder (12) and a second cylinder (13) which are mutually connected in a rotating manner, the first cylinder (12) and the second cylinder (13) are elastically connected along the rotating direction, and round holes connected with the telescopic rod (9) are respectively formed in the first cylinder (12) and the second cylinder (13);
a circular fastener (121) is arranged on the first barrel (12), an annular stop block (122) is arranged on the outer side of the end portion of the circular fastener (121), a buckling groove (131) matched with the circular fastener (121) is arranged on the second barrel (13), a limiting groove (132) matched with the stop block (122) is arranged at the bottom of the buckling groove (131), and a long-strip-shaped wire slot (133) is arranged on the outer side of the buckling groove (131); the round fastener (121) is sleeved with a torsion spring (15), one end of the torsion spring (15) is buckled into the side wall of the first barrel (12), and the other end of the torsion spring (15) is buckled into the wire groove (133).
2. The hydropower station multi-sensor centralized acquisition system of claim 1, wherein: the flow sensor (5) is an ultrasonic non-contact flow sensor.
3. The hydropower station multi-sensor centralized acquisition system of claim 1, wherein: the external parts of the embedded host (1) and the detection sensor are connected with a mobile temporary power supply.
4. The hydropower station multi-sensor centralized acquisition system of claim 1, wherein: and the first cylinder body (12) and the second cylinder body (13) outside the round holes are both provided with a limit screw (14), and the end part of the limit screw (14) is attached to the side wall of the telescopic rod (9).
5. The hydropower station multi-sensor centralized acquisition system of claim 1, wherein: the telescopic pole is characterized by further comprising a pressing plate (16) located at the end part of the telescopic pole (9), one side of the pressing plate (16) is connected with the telescopic pole (9) through a universal joint (17), and a magnetic sheet or an adhesive film is arranged on the other side of the pressing plate (16).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010468130.3A CN111638670B (en) | 2020-05-28 | 2020-05-28 | Multi-sensor centralized acquisition system of hydropower station |
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| CN202010468130.3A CN111638670B (en) | 2020-05-28 | 2020-05-28 | Multi-sensor centralized acquisition system of hydropower station |
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| CN111638670B true CN111638670B (en) | 2022-07-01 |
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| CN117875912A (en) * | 2024-03-12 | 2024-04-12 | 中建三局集团华南有限公司 | BIM+IOT-based intelligent piling management monitoring tracking system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482990A (en) * | 2014-11-11 | 2015-04-01 | 杨志龙 | Mud tank ultrasonic wave liquid level sensor clamping and fixing adjustment device |
| CN205333133U (en) * | 2016-02-01 | 2016-06-22 | 中国大唐集团科学技术研究院有限公司华中分公司 | A ultrasonic sensor fixing device for generator inner cooling water flow test |
| CN110118578A (en) * | 2019-04-08 | 2019-08-13 | 辽宁工程技术大学 | Power station remote monitoring system based on Internet of Things |
| CN211904227U (en) * | 2020-05-28 | 2020-11-10 | 国网新源水电有限公司富春江水力发电厂 | Multi-sensor centralized acquisition system for hydropower station |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482990A (en) * | 2014-11-11 | 2015-04-01 | 杨志龙 | Mud tank ultrasonic wave liquid level sensor clamping and fixing adjustment device |
| CN205333133U (en) * | 2016-02-01 | 2016-06-22 | 中国大唐集团科学技术研究院有限公司华中分公司 | A ultrasonic sensor fixing device for generator inner cooling water flow test |
| CN110118578A (en) * | 2019-04-08 | 2019-08-13 | 辽宁工程技术大学 | Power station remote monitoring system based on Internet of Things |
| CN211904227U (en) * | 2020-05-28 | 2020-11-10 | 国网新源水电有限公司富春江水力发电厂 | Multi-sensor centralized acquisition system for hydropower station |
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