Shafting diaphragm wireless displacement acquisition system

Abstract

The present application belongs to the field of diaphragm detection, and particularly relates to a shaft system diaphragm wireless displacement collection system. The shaft system diaphragm wireless displacement collection system provided by the present application comprises a coupling with a diaphragm, the diaphragm is arranged between two shaft system flanges of the coupling, and further comprises a displacement sensor, a collector and a fixing base; the displacement sensor is provided with at least one pair, and each pair of displacement sensors is symmetrically arranged on the shaft system flanges on the two sides of the diaphragm; the displacement sensor is connected with the collector; and the fixing base fixes the collector on the coupling. The shaft system diaphragm wireless displacement collection system provided by the present application can be used for detecting the deformation of the diaphragm in the rotating working state of the coupling, and can also effectively screen the displacement of the displacement sensor which affects the detection result, even introduce a compensation mechanism, effectively compensate the result after the displacement of the displacement sensor is loosened, and there is no need to detect again.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of diaphragm detection, and particularly relates to a wireless displacement collection system for a shaft diaphragm. BACKGROUND

[0002] The diaphragm coupling is connected with two half couplings by several groups of diaphragms (stainless steel sheets) through bolts in an interlaced manner, each group of diaphragms is stacked by several diaphragms, and the diaphragms are divided into connecting rod type and whole piece type with different shapes. The diaphragm coupling compensates for the relative displacement of the two shafts to be connected by the elastic deformation of the diaphragms, is a high-performance metal strong element flexible coupling, does not need oil, has a compact structure, high strength, long service life, no rotation gap, is not affected by temperature and oil stains, has the characteristics of acid resistance, alkali resistance and corrosion resistance, and is suitable for shaft transmission in high-temperature, high-speed and corrosive medium working environments.

[0003] In order to study the deformation law of the coupling diaphragm under instantaneous and repeated load, in view of the compact structure and high-speed rotation characteristics of the coupling, a wireless deformation detection system suitable for detecting the deformation of the coupling diaphragm under the rotating working state of the coupling is needed. At present, there is no similar system on the market. SUMMARY

[0004] The wireless displacement collection system for a shaft diaphragm provided by the application can effectively solve the problems in the background art.

[0005] The wireless displacement collection system for a shaft diaphragm provided by the application comprises a coupling with diaphragms, the diaphragms are arranged between two shaft flanges of the coupling, and further comprises displacement sensors, a collector and a fixing seat.

[0006] Each pair of displacement sensors is symmetrically arranged on the shaft flanges on the two sides of the diaphragm, the displacement sensors are connected to the collector, and the fixing seat fixes the collector on the coupling.

[0007] Further comprising a detection method, as follows:

[0008] a) Each pair of displacement sensors sets two values of the detected distance of the diaphragm as initial values;

[0009] b) When the coupling rotates or after the coupling rotates, each pair of displacement sensors sets two values of the detected distance of the diaphragm as detection values;

[0010] c) The two detection values are compared with the sum of the two initial values, if the comparison result is the same or within a set error range, the two detection values are respectively subtracted from the two initial values, and the difference is identified as the deformation amount of the diaphragm;

[0011] If the comparison result is not the same or exceeds the set error range, it is determined that the result cannot be directly used.

[0012] As a further optimization of the present application, the fixed seat is further provided with an alarm device, and the alarm device is connected to the collector; when the comparison result in step c is different or exceeds the set error range, the alarm device alarms.

[0013] As a further optimization of the present application, a compensation method is further included.

[0014] d) In step c, if the comparison result is different or exceeds the set error range, the detection result is recorded, and when it is detected that which displacement sensor is displaced, the error value is used as a compensation value for compensation.

[0015] As a further optimization of the present application, the displacement sensor is an eddy current displacement sensor.

[0016] As a further optimization of the present application, a control box is further included; the control box is fixed on the fixed seat, and the collector is arranged in the control box.

[0017] As a further optimization of the present application, a wireless signal transmitter is further arranged in the control box, and the wireless signal transmitter is connected to the collector.

[0018] As a further optimization of the present application, an inclination sensor is further arranged in the control box, and the inclination sensor is connected to the collector.

[0019] As a further optimization of the present application, a battery module and a power display are further arranged in the control box; the battery module supplies power to the displacement sensor and the collector; and the power display is arranged on the outer surface of the control box and used for displaying the power of the battery module.

[0020] As a further optimization of the present application, the displacement sensor is arranged with eight pairs of sensors and is circumferentially arranged on the shaft flange.

[0021] As a further optimization of the present application, the fixed seat includes two half-arc clamps and a horizontal seat; the two half-arc clamps are fixed on the shaft coupling through bolts; the horizontal seat is horizontally fixed on the clamps; and the control box is fixed on the horizontal seat.

[0022] The shaft system diaphragm wireless displacement collection system provided by the present application can be used for detecting the diaphragm deformation under the rotating working state of the shaft coupling, and can effectively screen the displacement sensor loose displacement which affects the detection result, even introduce a compensation mechanism to effectively compensate the result after the displacement sensor loose displacement, without the need for re-detection.

[0023] Drawings of the specification

[0024] Figure 1 is a structural schematic view of the embodiment;

[0025] Figure 2 is Figure 1The installation diagram of the displacement sensor;

[0026] Figure 3 is Figure 1 The internal diagram of the control box;

[0027] Figure 4 is Figure 1 The structure diagram of the fixing seat;

[0028] Wherein, the coupling 1, the shafting flange 1a, the diaphragm 1b, the displacement sensor 2, the control box 3, the collector 4, the inclination sensor 5, the wireless signal transmitter 6, the electric quantity display 7, the fixing seat 8, the clamp 8a, the horizontal seat 8b. DETAILED DESCRIPTION

[0029] As Figures 1-4 shown, the embodiment is applied to the diaphragm coupling 1, in which the diaphragm 1b is arranged between the two shafting flanges 1a of the coupling 1 and fixed by bolts.

[0030] It also comprises the displacement sensor 2, the collector 4 and the fixing seat 8.

[0031] The displacement sensor 2 is used to detect the deformation of the diaphragm 1b. In the embodiment, the displacement sensor 2 is an eddy current displacement sensor with a range of 0-10 mm. The eddy current displacement sensor works according to the eddy current effect, that is, an induced current is generated when a metal conductor is placed in a changing magnetic field, thereby forming a self-closing electric eddy current line in the metal body. This phenomenon is called eddy current effect. The eddy current probe is a flat coil fixed on a frame, and the excitation source has a high frequency (10 kHz-10 MHz). In other embodiments, the displacement sensor 2 can also be a laser sensor, etc.

[0032] The displacement sensor 2 is provided with at least one pair, and eight pairs are provided in the embodiment. The eight pairs of displacement sensors 2 are symmetrically arranged on the shafting flanges 1a on both sides of the diaphragm 1b, and the symmetry means that one pair of displacement sensors 2 are on a straight line. The displacement sensor 2 is connected to the collector 4.

[0033] The fixing seat 8 in the embodiment comprises two semi-arc clamps 8a and a horizontal seat 8b. The two semi-arc clamps 8a are provided with mounting ears on both sides. After the two clamps 8a tightly embrace the coupling 1 from both sides, the two clamps 8a are fixed tightly by bolts passing through the mounting ears of the two clamps 8a at the same time. The outer arc surface of the clamp 8a is provided with the horizontal seat 8b. In the embodiment, the two clamps 8a are both provided with the horizontal seat 8b, and the two horizontal seats 8b are parallel to each other. In other embodiments, only one horizontal seat 8b can be provided.

[0034] The collector 4 adopts 8-channel data collection independently developed by China. The collector 4 is fixed on the fixed seat 8. Specifically, the control box 3 is adopted in the embodiment, and the control box 3 is fixed on the horizontal seat 8b. The collector 4 is arranged in the control box 3. The data interface of the displacement sensor 2 is arranged on the control box 3. The displacement sensor 2 is connected to the data interface. The data interface is connected to the collector 4. The collector 4 is used to collect the data detected by the displacement sensor 2.

[0035] In the embodiment, the wireless signal transmitter 6 is further arranged in the control box 3. The wireless signal transmitter 6 is connected to the collector 4. The collector 4 sends the collected information to the external terminal through the wireless signal transmitter 6.

[0036] In the embodiment, the inclination sensor 5 is further arranged in the control box 3. The inclination sensor 5 is connected to the collector 4. The inclination sensor 5 can be used as the starting signal of the collector 4. When the inclination sensor 5 detects that the shaft coupling 1 starts to rotate, the signal is sent to the collector 4. The collector 4 controls the displacement sensor 2 to start working.

[0037] In the embodiment, the battery module and the power display 7 are further arranged in the control box 3. The battery module supplies power to the displacement sensor 2 and the collector 4. The power display 7 is arranged on the outer surface of the control box 3 and is used to display the power of the battery module. Of course, the power display 7 can also be expanded to a general display to display other data, such as the working state and feedback result of the displacement sensor 2.

[0038] The embodiment further includes a detection method, as follows:

[0039] a) Each pair of displacement sensors 2 sets two values of the distance to the diaphragm 1b detected as initial values.

[0040] b) When or after the shaft coupling 1 rotates, each pair of displacement sensors 2 sets two values of the distance to the diaphragm 1b detected as detection values.

[0041] c) The two detection values are compared with the sum of the two initial values. If the comparison result is the same or within the set error range, it can be concluded that the pair of displacement sensors 2 does not loosen and displace during the rotation of the shaft coupling 1. Of course, it is also possible that a pair of displacement sensors 2 moves in the same direction and moves the same distance, but the probability of this possibility is extremely low, so it can be ignored.

[0042] Then, the two detection values are respectively subtracted from the two initial values, and the difference is identified as the deformation amount of the diaphragm 1b.

[0043] If the comparison result is not the same or exceeds the set error range, it can be explained that the displacement sensor 2 is loosened during the rotation of the coupling 1, and the detection value at this time is necessarily inaccurate, and thus should not be easily accepted.

[0044] d) However, the result after the loosening displacement in step c) can be recorded, and when it is detected that which displacement sensor 2 is loosened, the error value can be used as a compensation value for compensation, so that the step of re-detection can be saved, and the prerequisite is that only one of the pair of displacement sensors 2 is loosened. If both of the pair of displacement sensors 2 are loosened, compensation calculation is needed after the loosening displacement is detected.

[0045] Preferably, an alarm device can also be arranged on the fixing seat 8, and the alarm device is connected to the collector 4, and the alarm is given when the comparison result in step c) is not the same or exceeds the set error range, so as to timely convey the loosening displacement of the displacement sensor.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the protection scope of the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the essence and scope of the technical solutions of the present application.

Claims

1. A shaft diaphragm wireless displacement acquisition system, comprising a coupling with a diaphragm, wherein the diaphragm is arranged between two shaft flanges of the coupling, characterized in that: It also includes a displacement sensor, a collector and a fixing base; There is at least one pair of displacement sensors, each pair of displacement sensors is symmetrically arranged on the shaft flanges on both sides of the diaphragm; the displacement sensors are connected to the collector; the fixing seat fixes the collector on the coupling; Also included are detection methods, as follows: a) Each pair of displacement sensors sets the two values ​​of the distance to the diaphragm detected as initial values; b) When or after the coupling rotates, each pair of displacement sensors sets the two values ​​of the distance to the diaphragm as the detection values; c) Add the two test values ​​and compare them with the result of the two initial additions. If the comparison result is within the set error range, the two test values ​​are subtracted from the two initial values ​​respectively, and the difference is determined as the deformation of the diaphragm; d) In step c, if the comparison result exceeds the set error range, the test result is recorded. When the displacement sensor is later detected to have caused the displacement, the difference is used as the compensation value for compensation; It also includes a control box; the control box is fixed on the fixing base, and the collector is arranged in the control box; A wireless signal transmitter is also provided in the control box, and the wireless signal transmitter is connected to the collector.

2. The shaft diaphragm wireless displacement acquisition system according to claim 1, characterized in that: The fixing seat is also provided with an alarm device, which is connected to the collector; when the comparison result in step c exceeds the set error range, an alarm is sounded.

3. The wireless displacement acquisition system for shaft diaphragms according to claim 1 is characterized in that: The displacement sensor adopts eddy current displacement sensor.

4. The shaft diaphragm wireless displacement acquisition system according to claim 1, characterized in that: The control box is also provided with an inclination sensor, which is connected to the collector.

5. The shaft diaphragm wireless displacement acquisition system according to claim 1, characterized in that: The control box is also equipped with a battery module and a power display; the battery module supplies power to the displacement sensor and the collector; the power display is arranged on the outer surface of the control box to display the power level of the battery module.

6. The shaft diaphragm wireless displacement acquisition system according to claim 1, characterized in that: There are eight pairs of displacement sensors distributed circumferentially on the shaft flange.

7. The wireless displacement acquisition system for shaft diaphragms according to claim 1 is characterized in that: The fixing seat includes two semi-arc-shaped clamps and a horizontal seat; the two semi-arc-shaped clamps are fixed by bolts to clamp the coupling from both sides; the horizontal seat is horizontally fixed on the clamps; and the control box is fixed on the horizontal seat.

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