CN114577335A - Intelligent monitoring and controlling system for pipeline vibration - Google Patents
Intelligent monitoring and controlling system for pipeline vibration Download PDFInfo
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- CN114577335A CN114577335A CN202210213147.3A CN202210213147A CN114577335A CN 114577335 A CN114577335 A CN 114577335A CN 202210213147 A CN202210213147 A CN 202210213147A CN 114577335 A CN114577335 A CN 114577335A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 45
- 230000005540 biological transmission Effects 0.000 claims abstract description 138
- 238000013016 damping Methods 0.000 claims abstract description 63
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- 230000007246 mechanism Effects 0.000 claims description 156
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- 238000010521 absorption reaction Methods 0.000 claims description 36
- 238000012806 monitoring device Methods 0.000 claims description 33
- 230000003139 buffering effect Effects 0.000 claims description 27
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
- F16L3/08—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing
- F16L3/10—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing divided, i.e. with two or more members engaging the pipe, cable or protective tubing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
- F16L55/033—Noise absorbers
- F16L55/035—Noise absorbers in the form of specially adapted hangers or supports
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The invention discloses an intelligent monitoring and controlling system for pipeline vibration, which comprises a transmission pipeline, a detection device, a control device and a damping device, wherein the transmission pipeline is connected with the detection device; the transmission pipeline is used for transmitting hot steam generated in the heat exchange of the reactor to the generator; the detection device is used for setting monitoring points on the transmission pipeline to monitor the vibration condition of the transmission pipeline, acquiring vibration amplitude data at the same time and then sending the vibration amplitude data to the control device; the control device is used for analyzing according to the received vibration amplitude data and sending a control instruction to the damping device; the damping device is used for reducing the vibration amplitude of the transmission pipeline and simultaneously moves along the transmission pipeline so as to perform auxiliary damping on the vibration peak point of the transmission pipeline. The invention can monitor the transmission pipeline and adjust the dispersion vibration adaptively while ensuring the stability and firmness of the main section of the pipeline.
Description
Technical Field
The invention belongs to the technical field of pipeline vibration control, and particularly relates to an intelligent pipeline vibration monitoring and controlling system.
Background
The nuclear power station pipeline system is often in a severe working environment with high temperature, high pressure and strong radiation, various fluids are conveyed in the pipeline, the artery and vein of the nuclear power station are, the arrangement trend of the pipeline system of the nuclear power station is complex, various vibration problems inevitably occur in the pipeline during operation, when the pipeline runs for a long time under a severe working condition with high vibration level, dangerous sections such as welding seams and the like have great potential safety hazards, and therefore repeated safety vibration detection and shock absorption repair are needed to be carried out on the nuclear power station pipeline.
The existing pipeline vibration detection and control modes are mainly as disclosed in U.S. Pat. No. 4216670A, U.S. Pat. No. 4950447A, JPH0719387A and JPH11160480A, the systems are often reinforced by means of improving the material of the pipeline and the reinforcement means of main nodes, and the pipeline vibration condition is not only in node positions, especially when long-section straight pipelines, reaction gas with higher energy in the pipeline can generate irregular vibration when impacting in the pipeline, especially when the power of the nuclear reactor is different, main vibration sections also have differences, so the nuclear power plant pipeline is often difficult to adapt after being fixedly arranged, and more shock-absorbing seats are selected to be added, which causes redundancy and occupies larger space, so that intelligent control over the pipeline vibration is realized by adding some auxiliary means.
Disclosure of Invention
In order to overcome the problems in the prior art, the invention aims to provide an intelligent monitoring and control system for pipeline vibration, a detection device is arranged to monitor a transmission pipeline, monitored data are sent to a control device to be intelligently analyzed, so that whether the vibration condition of the pipeline exceeds a control threshold value or not is compared, time-interval monitoring is arranged to quickly respond to the vibration change of the pipeline so as to perform damping adjustment, and two damping devices, namely a fixed damping device and an auxiliary damping device, are arranged, so that the main section of the pipeline is ensured to be stable and firm, and the deviation vibration can be adaptively adjusted.
In order to achieve the purpose, the invention adopts the technical scheme that:
an intelligent monitoring and control system for pipeline vibration comprises a transmission pipeline 1, a detection device 2, a control device and a damping device 3;
the transmission pipeline 1 is used for transmitting hot steam generated in the heat exchange of the reactor to a generator;
the detection device 2 is used for setting monitoring points on the transmission pipeline 1 to monitor the vibration condition of the transmission pipeline 1, acquiring vibration amplitude data at the same time, and then sending the vibration amplitude data to the control device;
the control device is used for analyzing according to the received vibration amplitude data and sending a control instruction to the damping device 3;
the damping device 3 is used for reducing the vibration amplitude of the transmission pipeline 1 and simultaneously moves along the transmission pipeline 1 so as to perform auxiliary damping on the vibration peak point of the transmission pipeline 1.
The damping device 3 comprises a fixed damping device 31 and an auxiliary damping device 32, the fixed damping device 31 is fixedly connected with the transmission pipeline 1 and is used for installing and supporting the transmission pipeline 1, and the auxiliary damping device 32 is detachably connected with the transmission pipeline 1 and moves along the transmission pipeline 1.
Fixed buffer 31 includes installing support, first locking mechanism, first contact mechanism of moving away to avoid possible earthquakes, first locking mechanism sets up on the installing support, first locking mechanism first contact mechanism of moving away to avoid possible earthquakes sets up on first locking mechanism, first locking mechanism drives first contact mechanism of moving away to avoid possible earthquakes and locks with transmission pipeline 1 and is connected, first contact mechanism of moving away to avoid possible earthquakes just is used for alleviateing the vibrations of transmission pipeline 1 with 1 butt of transmission pipeline.
The auxiliary buffering device 32 comprises a first moving mechanism, a buffering base, a second locking mechanism and a second contact shock absorption mechanism, wherein the buffering base is arranged on the first moving mechanism, the first moving mechanism drives the auxiliary buffering device 32 to move, the buffering base reduces the vibration of the transmission pipeline 1 in the vertical direction, the second locking mechanism is arranged on the buffering base, and the second contact shock absorption mechanism is abutted and locked with the transmission pipeline 1 through the second locking mechanism.
The auxiliary buffer device 32 is connected with a traction device 4, and the traction device 4 is used for driving the auxiliary buffer device 32 to move.
The traction device 4 comprises a second moving mechanism and a limiting connection mechanism, the limiting connection mechanism is arranged on the second moving mechanism, the limiting connection mechanism generates power to drive the traction device 4 to move, the limiting connection mechanism binds and connects the traction device 4 with the auxiliary buffer device 32, after the limiting connection mechanism is connected with the auxiliary buffer device 32, the traction device 4 provides power for the auxiliary buffer device 32 through the second moving mechanism, and meanwhile the auxiliary buffer device 32 slides along the transmission pipeline 1 under the assistance of the movement of the first moving mechanism and the traction of the second moving mechanism.
The detection device 2 comprises a vertical monitoring device and a horizontal monitoring device, the horizontal monitoring device monitors pipeline horizontal vibration data when the transmission pipeline 1 vibrates, and the vertical monitoring device monitors pipeline vertical vibration data when the transmission pipeline 1 vibrates.
Vertical monitoring devices is the same with horizontal monitoring devices's structure homogeneous phase, all includes vibrator, conversion equipment and transmitter, the vibrator is used for detecting the vibration signal of collecting transmission pipeline 1, conversion equipment converts vibration signal into the signal of telecommunication, the transmitter sends the signal of telecommunication, detection device 2 still is provided with the mounting bracket, the mounting bracket sets up on transmission pipeline 1, vibrator, conversion equipment and transmitter all set up on the mounting bracket, and conversion equipment respectively with vibrator and transmitter electric connection.
The control device comprises a receiving module, a vibration analysis module and a feedback module, wherein the receiving module receives the electric signals sent by the detection device 2, the vibration analysis module analyzes the electric signals to obtain vibration level parameters corresponding to each monitoring point, and the feedback module is used for sending control instructions to other modules.
The invention has the beneficial effects that:
the invention can monitor the transmission pipeline by arranging the detection device, and simultaneously sends the monitored data to the control device for intelligent analysis, thereby comparing whether the vibration condition of the pipeline exceeds a control threshold value, rapidly responding to the vibration change of the pipeline by setting time-interval monitoring so as to perform damping adjustment, adaptively adjusting the deviation-shaped vibration while ensuring the stability and firmness of the main section of the pipeline by arranging two damping devices, namely the fixed damping device and the auxiliary damping device, automatically carrying the movable damping device by arranging the traction device so as to accurately move the movable damping device to a mounting point, and simultaneously arranging the orientation device so that the movable damping device can be kept aligned with the transmission pipeline and is not easy to deviate from the pipeline.
Drawings
FIG. 1 is a schematic view of the present invention.
Fig. 2 is a schematic structural view of an auxiliary buffering device of the present invention.
FIG. 3 is a schematic view of the structure of the orientation device of the present invention.
Fig. 4 is a schematic structural view of the traction device of the present invention.
FIG. 5 is a control flow diagram of the present invention.
In the figure: the device comprises a transmission pipeline 1, a detection device 2, a damping device 3, a fixed buffer device 31, an auxiliary buffer device 32, a traction device 4 and an orientation device 5.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The first embodiment is as follows:
as shown in fig. 1, an intelligent monitoring and controlling system for pipeline vibration comprises:
the transmission pipeline 1 is used for transmitting hot steam generated in heat exchange of the reactor to a generator;
the detection device 2 is used for setting monitoring points on the transmission pipeline 1 to monitor the vibration condition of the transmission pipeline 1, acquiring vibration amplitude data at the same time, and then sending the vibration amplitude data to the control device;
the control device is used for analyzing according to the received vibration amplitude data and sending a control instruction to the damping device 3;
the damping device 3 is used for reducing the vibration amplitude of the transmission pipeline 1 and can move along the transmission pipeline 1 so as to perform auxiliary damping on the vibration peak point of the transmission pipeline 1;
the damping device 3 comprises a fixed damping device 31 and an auxiliary damping device 32, the fixed damping device 31 is fixedly connected with the transmission pipeline 1 and is used for installing and supporting the transmission pipeline 1, and the auxiliary damping device 32 is detachably connected with the transmission pipeline 1 and can move along the transmission pipeline 1;
the fixed buffer device 31 comprises a mounting bracket, a first locking mechanism and a first contact shock absorption mechanism, wherein the first locking mechanism is arranged on the mounting bracket, the first locking mechanism and the first contact shock absorption mechanism are arranged on the first locking mechanism, the first locking mechanism drives the first contact shock absorption mechanism to be locked and connected with the transmission pipeline 1, and the first contact shock absorption mechanism is structurally abutted to the transmission pipeline 1 and used for reducing the shock of the transmission pipeline 1;
the auxiliary buffering device 32 comprises a first moving mechanism, a buffering base, a second locking mechanism and a second contact shock absorption mechanism, wherein the buffering base is arranged on the first moving mechanism, the first moving mechanism drives the auxiliary buffering device 32 to move, the buffering base reduces the vibration of the transmission pipeline 1 in the vertical direction, the second locking mechanism is arranged on the buffering base, and the second locking mechanism is configured to abut and lock the second contact shock absorption mechanism with the transmission pipeline 1;
a traction device 4 is also arranged, and the traction device 4 is used for driving the auxiliary buffer device 32 to move;
the traction device 4 comprises a second moving mechanism and a limit connecting mechanism, the limit connecting mechanism is arranged on the second moving mechanism, the limit connecting mechanism is configured to generate power to drive the traction device 4 to move, the limit connecting mechanism is configured to bind and connect the traction device 4 with the auxiliary buffer device 32, in the embodiment, the traction device 4 is configured to provide power for the auxiliary buffer device 32 through the second moving mechanism after the limit connecting mechanism is connected with the auxiliary buffer device 32, and meanwhile, the auxiliary buffer device 32 slides along the transmission pipeline 1 under the assistance of the movement of the first moving mechanism and the traction of the second moving mechanism;
the detection device 2 comprises a vertical monitoring device and a horizontal monitoring device, the horizontal monitoring device monitors pipeline horizontal vibration data when the transmission pipeline 1 vibrates, and the vertical monitoring device monitors pipeline vertical vibration data when the transmission pipeline 1 vibrates;
the vertical monitoring device and the horizontal monitoring device are identical in structure and respectively comprise a vibrator, a conversion device and an emitter, the vibrator is used for detecting and collecting vibration signals of the transmission pipeline 1, the conversion device converts the vibration signals into electric signals, the emitter sends the electric signals, the detection device 2 is further provided with a mounting rack, the mounting rack is arranged on the transmission pipeline 1, the vibrator, the conversion device and the emitter are arranged on the mounting rack, and the conversion device is respectively electrically connected with the vibrator and the emitter;
the control device comprises a receiving module, a vibration analysis module and a feedback module, wherein the receiving module receives the electric signals sent by the detection device 2, the vibration analysis module analyzes the electric signals to obtain vibration level parameters corresponding to each monitoring point, and the feedback module is used for sending control instructions to other modules.
Second embodiment, the present embodiment is further described in the above embodiments, and it should be understood that the present embodiment includes all the technical features described above and is further described in detail:
an intelligent monitoring and control system for pipeline vibration, comprising:
the transmission pipeline 1 is used for transmitting hot steam generated in the heat exchange of the reactor to a generator;
the detection device 2 is used for setting monitoring points on the transmission pipeline 1 to monitor the vibration condition of the transmission pipeline 1, acquiring vibration amplitude data at the same time, and then sending the vibration amplitude data to the control device;
the control device is used for analyzing according to the received vibration amplitude data and sending a control instruction to the damping device 3;
the damping device 3 is used for reducing the vibration amplitude of the transmission pipeline 1 and can move along the transmission pipeline 1 so as to perform auxiliary damping on the vibration peak point of the transmission pipeline 1;
the damping device 3 comprises a fixed damping device 31 and an auxiliary damping device 32, the fixed damping device 31 is fixedly connected with the transmission pipeline 1 and is used for installing and supporting the transmission pipeline 1, and the auxiliary damping device 32 is detachably connected with the transmission pipeline 1 and can move along the transmission pipeline 1;
the fixed buffer device 31 comprises a mounting bracket, a first locking mechanism and a first contact shock absorption mechanism, wherein the first locking mechanism is arranged on the mounting bracket, the first locking mechanism and the first contact shock absorption mechanism are arranged on the first locking mechanism, the first locking mechanism drives the first contact shock absorption mechanism to be locked and connected with the transmission pipeline 1, and the first contact shock absorption mechanism is structurally abutted to the transmission pipeline 1 and used for reducing the shock of the transmission pipeline 1;
the auxiliary buffer device 32 comprises a first moving mechanism, a buffer base, a second locking mechanism and a second contact shock absorption mechanism, wherein the buffer base is arranged on the first moving mechanism, the first moving mechanism drives the auxiliary buffer device 32 to move, the buffer base reduces the vibration of the transmission pipeline 1 in the vertical direction, the second locking mechanism is arranged on the buffer base, and the second locking mechanism is configured to abut and lock the second contact shock absorption mechanism with the transmission pipeline 1;
the auxiliary buffer device 32 is further provided with an orientation device 5, the orientation device 5 monitors the offset condition of the auxiliary buffer device 32 and the transmission pipeline 1, the orientation device 5 is in signal connection with a control device, specifically, when the auxiliary buffer device 32 deviates from the central axis of the transmission pipeline 1 in the moving direction, the orientation device 5 monitors that the deviation signal is sent to the control device at the same time, and then the control device adjusts the traction device 4 to enable the traction device 4 to drive the auxiliary buffer device 32 to be matched and aligned with the transmission pipeline 1 again;
the orientation device 5 comprises two deviation detection mechanisms symmetrically arranged on the second contact shock absorption mechanism, and the deviation detection mechanisms are in contact with the transmission pipeline 1 and simultaneously monitor the side to which the second contact shock absorption mechanism deviates;
the deviation detection mechanism comprises a mounting rack, a telescopic rod, a spring, a pressure rod and an angle sensor, the mounting rack is arranged on the second contact shock absorption mechanism, the pressure rod is rotatably arranged on the mounting rack, two ends of the telescopic rod are respectively connected with the mounting rack and the pressure rod, the spring is sleeved on the telescopic rod and abutted against the pressure rod, the angle sensor is arranged on the mounting rack and monitors the inclination angle of the pressure rod, and simultaneously sends inclination angle data to the control device, when the second contact shock absorption mechanism of the deviation detection mechanism moves along the transmission pipeline 1, the pressure rods of the two deviation detection mechanisms are respectively abutted against the outer wall of the transmission pipeline 1 and form an initial angle, but when the second contact shock absorption mechanism is positioned under the transmission pipeline 1, the initial angles of the two deviation detection mechanisms are the same, and when the movable buffer device deviates, if the inclination angles of the compression bars detected by the two angle sensors are deviated, the control device performs feedback adjustment to ensure that the movable buffer device is aligned with the transmission pipeline 1 again;
a traction device 4 is further arranged, and the traction device 4 is used for driving the auxiliary buffer device 32 to move;
the traction device 4 comprises a second moving mechanism and a limit connecting mechanism, the limit connecting mechanism is arranged on the second moving mechanism, the limit connecting mechanism is configured to generate power to drive the traction device 4 to move, the limit connecting mechanism is configured to bind and connect the traction device 4 with the auxiliary buffer device 32, in the embodiment, the traction device 4 is configured to provide power for the auxiliary buffer device 32 through the second moving mechanism after the limit connecting mechanism is connected with the auxiliary buffer device 32, and meanwhile, the auxiliary buffer device 32 slides along the transmission pipeline 1 under the assistance of the movement of the first moving mechanism and the traction of the second moving mechanism;
the detection devices 2 are provided with a plurality of groups and are arranged on the transmission pipeline 1 in a staggered manner within a set interval range;
the set distance range is 2-3 m;
the detection device 2 comprises a vertical monitoring device and a horizontal monitoring device, the horizontal monitoring device monitors pipeline horizontal vibration data when the transmission pipeline 1 vibrates, and the vertical monitoring device monitors pipeline vertical vibration data when the transmission pipeline 1 vibrates;
the vertical monitoring device and the horizontal monitoring device are identical in structure and respectively comprise a vibrator, a conversion device and a transmitter, the vibrator is used for detecting and collecting vibration signals of the transmission pipeline 1, the conversion device converts the vibration signals into electric signals, the transmitter sends the electric signals, the detection device 2 is further provided with a mounting frame, the mounting frame is arranged on the transmission pipeline 1, the vibrator, the conversion device and the transmitter are arranged on the mounting frame, and the conversion device is respectively electrically connected with the vibrator and the transmitter;
the control device comprises a receiving module, a vibration analysis module and a feedback module, wherein the receiving module receives the electric signals sent by the detection device 2, the vibration analysis module analyzes the electric signals to obtain vibration level parameters corresponding to each monitoring point, and the feedback module is used for sending control instructions to other modules;
the control mode of the intelligent monitoring control of the pipeline vibration is as follows:
after a receiving module of the control device collects pipeline vibration data of a period of time from monitoring devices arranged at monitoring points on a transmission pipeline 1, a vibration analysis module calculates vibration degree parameters according to the pipeline vibration data, meanwhile, the vibration analysis module calculates vibration amplitude threshold values according to the position relations of different detection devices 2 and damping devices 3, the vibration degree parameters are compared with the vibration amplitude threshold values, when the vibration degree parameters exceed the vibration amplitude threshold values, the control device analyzes to obtain mark detection points needing auxiliary damping, then the control device sends a control instruction to control a traction device 4 to drive an auxiliary buffering device 32 to move to buffering points, the auxiliary buffering device 32 is bound with the transmission pipeline 1 and damp, and then whether the pipeline vibration data of the next period of time exceed the standard or not is continuously collected and analyzed.
Third embodiment, the present embodiment is further described in the above embodiments, and it should be understood that the present embodiment includes all the technical features described above and is further described in detail:
as further shown in fig. 2 to 5, an intelligent monitoring and controlling system for pipeline vibration includes:
the transmission pipeline 1 is used for transmitting hot steam generated in the heat exchange of the reactor to a generator;
the detection device 2 is used for setting monitoring points on the transmission pipeline 1 to monitor the vibration condition of the transmission pipeline 1, acquiring vibration amplitude data at the same time, and then sending the vibration amplitude data to the control device;
the control device is used for analyzing according to the received vibration amplitude data and sending a control instruction to the damping device 3;
the damping device 3 is used for reducing the vibration amplitude of the transmission pipeline 1 and can move along the transmission pipeline 1 so as to perform auxiliary damping on the vibration peak point of the transmission pipeline 1;
the damping device 3 comprises a fixed damping device 31 and an auxiliary damping device 32, the fixed damping device 31 is fixedly connected with the transmission pipeline 1 and is used for installing and supporting the transmission pipeline 1, and the auxiliary damping device 32 is detachably connected with the transmission pipeline 1 and can move along the transmission pipeline 1;
the fixed buffer device 31 comprises a mounting bracket, a first locking mechanism and a first contact shock absorption mechanism, wherein the first locking mechanism is arranged on the mounting bracket, the first locking mechanism and the first contact shock absorption mechanism are arranged on the first locking mechanism, the first locking mechanism drives the first contact shock absorption mechanism to be locked and connected with the transmission pipeline 1, and the first contact shock absorption mechanism is structurally abutted to the transmission pipeline 1 and used for reducing the shock of the transmission pipeline 1;
the auxiliary buffer device 32 comprises a first moving mechanism, a buffer base, a second locking mechanism and a second contact shock absorption mechanism, wherein the buffer base is arranged on the first moving mechanism, the first moving mechanism drives the auxiliary buffer device 32 to move, the buffer base reduces the vibration of the transmission pipeline 1 in the vertical direction, the second locking mechanism is arranged on the buffer base, and the second locking mechanism is configured to abut and lock the second contact shock absorption mechanism with the transmission pipeline 1;
the auxiliary buffer device 32 is further provided with an orientation device 5, the orientation device 5 monitors the offset condition of the auxiliary buffer device 32 and the transmission pipeline 1, the orientation device 5 is in signal connection with a control device, specifically, when the auxiliary buffer device 32 deviates from the central axis of the transmission pipeline 1 in the moving direction, the orientation device 5 monitors that the deviation signal is sent to the control device at the same time, and then the control device adjusts the traction device 4 to enable the traction device 4 to drive the auxiliary buffer device 32 to be matched and aligned with the transmission pipeline 1 again;
the orientation device 5 comprises two deviation detection mechanisms symmetrically arranged on the second contact shock absorption mechanism, and the deviation detection mechanisms are in contact with the transmission pipeline 1 and simultaneously monitor the side to which the second contact shock absorption mechanism deviates;
the deviation detection mechanism comprises a mounting frame, a telescopic rod, a spring, a pressure rod and an angle sensor, the mounting frame is arranged on the second contact shock absorption mechanism, the pressure rod is rotatably arranged on the mounting frame, two ends of the telescopic rod are respectively connected with the mounting frame and the pressure rod, the spring is sleeved on the telescopic rod, the angle sensor is arranged on the mounting frame and monitors the inclination angle of the pressure rod, and simultaneously sends inclination angle data to the control device, when the second contact shock absorption mechanism of the deviation detection mechanism moves along the transmission pipeline 1, the pressure rods of the two deviation detection mechanisms are respectively abutted against the outer wall of the transmission pipeline 1 and form initial angles, but when the second contact shock absorption mechanism is positioned under the transmission pipeline 1, the initial angles of the two deviation detection mechanisms are the same, and when the movable buffer device deviates, the inclination angles of the pressure rods detected by the two angle sensors are deviated, then the control device carries out feedback adjustment to ensure that the mobile buffer device is aligned with the transmission pipeline 1 again;
a traction device 4 is also arranged, and the traction device 4 is used for driving the auxiliary buffer device 32 to move;
the traction device 4 comprises a second moving mechanism and a limit connecting mechanism, the limit connecting mechanism is arranged on the second moving mechanism, the limit connecting mechanism is configured to generate power to drive the traction device 4 to move, the limit connecting mechanism is configured to bind and connect the traction device 4 with the auxiliary buffer device 32, in the embodiment, after the limit connecting mechanism is connected with the auxiliary buffer device 32, the traction device 4 provides power for the auxiliary buffer device 32 through the second moving mechanism, and meanwhile, the auxiliary buffer device 32 slides along the transmission pipeline 1 under the movement assistance of the first moving mechanism and the traction of the second moving mechanism;
the detection devices 2 are provided with a plurality of groups and are arranged on the transmission pipeline 1 in a staggered manner within a set interval range;
the set distance range is 2-3 m;
the detection device 2 comprises a vertical monitoring device and a horizontal monitoring device, the horizontal monitoring device monitors pipeline horizontal vibration data when the transmission pipeline 1 vibrates, and the vertical monitoring device monitors pipeline vertical vibration data when the transmission pipeline 1 vibrates;
the vertical monitoring device and the horizontal monitoring device are identical in structure and respectively comprise a vibrator, a conversion device and an emitter, the vibrator is used for detecting and collecting vibration signals of the transmission pipeline 1, the conversion device converts the vibration signals into electric signals, the emitter sends the electric signals, the detection device 2 is further provided with a mounting rack, the mounting rack is arranged on the transmission pipeline 1, the vibrator, the conversion device and the emitter are arranged on the mounting rack, and the conversion device is respectively electrically connected with the vibrator and the emitter;
the control device comprises a receiving module, a vibration analysis module and a feedback module, wherein the receiving module receives the electric signals sent by the detection device 2, the vibration analysis module analyzes the electric signals to obtain vibration level parameters corresponding to each monitoring point, and the feedback module is used for sending control instructions to other modules;
the control mode of the intelligent monitoring control of the pipeline vibration is as follows:
after the pipeline vibration data of each monitoring point are collected by the detection device 2 arranged on the same section of transmission pipeline 1, wherein the pipeline vibration data comprise pipeline horizontal vibration data and pipeline vertical vibration data, the transmitter of the detection device 2 transmits the pipeline vibration data to the control device,
the vibration analysis module of the control device monitors the pipeline horizontal vibration data of each monitoring point by the horizontal monitoring device, and calculates the horizontal vibration parameter P of each monitoring point by the formula (1)Flat plate；
PFlat plate＝l1*F1+k1*S1 (1)
Wherein F1Is the horizontal vibration amplitude in mm, S1Is the horizontal vibration frequency in Hz, and1、k1respectively a horizontal vibration amplitude coefficient and a horizontal vibration frequency coefficient;
meanwhile, the vibration analysis module also monitors the vertical vibration data of the pipeline corresponding to the monitoring points by the vertical monitoring device, and calculates the vertical vibration parameter P of each monitoring point through a formula (2)Vertical；
PVertical＝l2*F2+k2*S2 (2)
Wherein F2Is the vertical vibration amplitude in mm, S is the vertical vibration frequency in Hz, and l2、k2Respectively representing a vertical vibration amplitude coefficient and a vertical vibration frequency coefficient;
meanwhile, obtaining a vibration range value Z according to a formula (3);
wherein gamma is a horizontal vibration correlation coefficient, and beta is a vertical vibration correlation coefficient;
wherein the monitoring point closest to the inlet end of the transmission pipeline 1 is used as a first monitoring point, the detection device arranged on the first monitoring point is used as a first detection device, and the vibration degree value obtained by the first detection device is defined as Z1If the detecting device arranged on the second monitoring point on the second sequence in sequence along the airflow direction is the second detecting device, the vibration degree value obtained by the second detecting device is defined as Z2The vibration data of the pipeline are repeatedly collected once by each detection device 2 at the same set time interval, and the vibration degree value of the first detection device in the 1 st time period is defined as Z1,1And defining the obtained vibration degree value of the 2 nd time period as Z1,2Therefore, the vibration degree values collected by the first detection device for the obtained vibration degree values of n consecutive time intervals are sequentially: z1,1、Z1,2、Z1,3……Z1,nIn this embodiment, m groups of the detecting device and the monitoring points are sequentially arranged, and each vibration degree parameter is obtained by formula (4)
Wherein min [ Z ]1,1:Z1,n]Is Z1,1To Z1,nMinimum value of (1), vibration level parameter
And comparing with a vibration amplitude threshold value U, wherein:
U＝q*μ*δthreshold(s) (5)
q is the number of detectors 2 spaced from the nearest fixed buffer 31 corresponding to the point of detection, μ is the empirical parameter of the position of the detector 2, δThreshold(s)Is a vibration threshold criterion;
wherein the vibration threshold criterion deltaThreshold valueThe calculation can be performed by the formula (6), specifically:
wherein, C1Empirical parameters of fluid density, C3As empirical parameter of temperature variation, C4As empirical parameters of pipe diameter, C5For empirical parameters under different vibration conditions, SNThe maximum value of the mutation stress in the past empirical data; alpha is an allowable stress reduction coefficient, C2K2Is the stress coefficient; wherein the empirical parameters can be obtained with limited experimentation, such as the temperature variation empirical parameter C3The correction value obtained by comparing the obtained values through pipeline experiments or simulation calculation according to different heat insulation materials in the pipeline is not repeated herein.
When the control device monitors that the vibration degree parameter exceeds the vibration amplitude threshold value, the analysis module marks the detection device 2 with an excessive value, simultaneously, continuous marked monitoring points form related marking sections, the middle sections of the related marking sections are taken as shock absorption action sections, and then the traction device 4 drives the auxiliary buffer device 32 to be installed on the shock absorption action sections for auxiliary shock absorption;
after the auxiliary buffer device 32 is installed, the detection device 2 collects the pipeline vibration data of the next n time periods, and compares whether a section exceeding the vibration amplitude threshold value exists in the transmission pipeline 1 through calculation and analysis, and then adds and installs the auxiliary buffer device 32 to perform auxiliary damping.
Claims (9)
1. The intelligent monitoring and control system for pipeline vibration is characterized by comprising a transmission pipeline (1), a detection device (2), a control device and a damping device (3);
the transmission pipeline (1) is used for transmitting hot steam generated in the heat exchange of the reactor to a generator;
the detection device (2) is used for setting monitoring points on the transmission pipeline (1) to monitor the vibration condition of the transmission pipeline (1), simultaneously acquiring vibration amplitude data and then sending the vibration amplitude data to the control device;
the control device is used for analyzing according to the received vibration amplitude data and sending a control instruction to the damping device (3) at the same time;
the damping device (3) is used for reducing the vibration amplitude of the transmission pipeline (1) and simultaneously moves along the transmission pipeline (1) so as to perform auxiliary damping on the vibration peak point of the transmission pipeline (1).
2. The intelligent monitoring and control system for pipeline vibration according to claim 1, wherein the damping device (3) comprises a fixed damping device (31) and an auxiliary damping device (32), the fixed damping device (31) is fixedly connected with the transmission pipeline (1) and is used for installing and supporting the transmission pipeline (1), and the auxiliary damping device (32) is detachably connected with the transmission pipeline (1) and moves along the transmission pipeline (1).
3. The intelligent monitoring and control system for pipeline vibration as claimed in claim 2, wherein the fixed buffering device (31) comprises a mounting bracket, a first locking mechanism and a first contact shock absorbing mechanism, the first locking mechanism is arranged on the mounting bracket, the first contact shock absorbing mechanism is arranged on the first locking mechanism, the first locking mechanism drives the first contact shock absorbing mechanism to be locked and connected with the transmission pipeline (1), and the first contact shock absorbing mechanism is abutted to the transmission pipeline (1) in structure and is used for reducing the shock of the transmission pipeline (1).
4. The intelligent monitoring and control system for pipeline vibration according to claim 2, wherein the auxiliary buffering device (32) comprises a first moving mechanism, a buffering base, a second locking mechanism and a second contact shock absorption mechanism, the buffering base is disposed on the first moving mechanism, the first moving mechanism drives the auxiliary buffering device (32) to move, the buffering base reduces the vibration of the transmission pipeline (1) in the vertical direction, the second locking mechanism is disposed on the buffering base, and the second locking mechanism enables the second contact shock absorption mechanism to be in butt locking with the transmission pipeline (1).
5. The intelligent monitoring and control system for the pipeline vibration according to claim 2, wherein the auxiliary damping device (32) is connected with a traction device (4), and the traction device (4) is used for driving the auxiliary damping device (32) to move.
6. The intelligent monitoring and control system for the pipeline vibration according to claim 5, wherein the traction device (4) comprises a second moving mechanism and a limiting connection mechanism, the limiting connection mechanism is arranged on the second moving mechanism, the limiting connection mechanism generates power to drive the traction device (4) to move, the limiting connection mechanism binds and connects the traction device (4) with the auxiliary buffering device (32), after the limiting connection mechanism is connected with the auxiliary buffering device (32), the traction device (4) provides power for the auxiliary buffering device (32) through the second moving mechanism, and meanwhile the auxiliary buffering device (32) slides along the transmission pipeline (1) under the assistance of the movement of the first moving mechanism and the traction of the second moving mechanism.
7. The intelligent monitoring and control system for pipeline vibration according to claim 1, wherein the detection device (2) comprises a vertical monitoring device and a horizontal monitoring device, the horizontal monitoring device monitors pipeline horizontal vibration data when the transmission pipeline (1) vibrates, and the vertical monitoring device monitors pipeline vertical vibration data when the transmission pipeline (1) vibrates.
8. The intelligent monitoring and control system for pipeline vibration according to claim 1, wherein the vertical monitoring device and the horizontal monitoring device are identical in structure and comprise a vibrator, a conversion device and a transmitter, the vibrator is used for detecting and collecting vibration signals of the transmission pipeline (1), the conversion device converts the vibration signals into electric signals, the transmitter sends the electric signals, the detection device (2) is further provided with a mounting frame, the mounting frame is arranged on the transmission pipeline (1), the vibrator, the conversion device and the transmitter are arranged on the mounting frame, and the conversion device is electrically connected with the vibrator and the transmitter respectively.
9. The intelligent monitoring and control system for pipeline vibration according to claim 1, wherein the control device comprises a receiving module, a vibration analysis module and a feedback module, the receiving module receives the electrical signals sent by the detection device (2), the vibration analysis module analyzes the electrical signals to obtain vibration level parameters corresponding to each monitoring point, and the feedback module is used for sending control instructions to other modules.
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| CN1439837A (en) * | 2003-03-14 | 2003-09-03 | 山东中实股份有限公司 | Control method and device for pipeline vibration |
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