Shafting diaphragm wireless displacement acquisition system

Abstract

The invention belongs to the field of diaphragm detection, and particularly relates to a shafting diaphragm wireless displacement acquisition system. The invention provides a shafting diaphragm wireless displacement acquisition system, which comprises a coupler with a diaphragm arranged between two shafting flanges of the coupler, and further comprises a displacement sensor, an acquisition device and a fixed seat, at least one pair of displacement sensors are arranged, and each pair of displacement sensors are symmetrically arranged on the shafting flanges on the two sides of the diaphragm; the displacement sensor is connected with the collector; the collector is fixed to the coupler through the fixing base. The shafting diaphragm wireless displacement acquisition system provided by the invention can be used for detecting the deformation of the diaphragm in a rotating working state of a coupler, can effectively screen the detection result influenced by the loose displacement of the displacement sensor, and even introduces a compensation mechanism to effectively compensate the result after the loose displacement of the displacement sensor. And re-detection is not needed.

Description

Technical Field

[0001] The invention belongs to the field of diaphragm detection, and in particular relates to a wireless displacement acquisition system for an axisymbrane. Background Art

[0002] The diaphragm coupling is composed of several groups of diaphragms (stainless steel sheets) connected to two half couplings by bolts. Each group of diaphragms is composed of several stacked pieces. The diaphragms are divided into connecting rod type and whole piece type of different shapes. The diaphragm coupling compensates the relative displacement of the two connected shafts by the elastic deformation of the diaphragm. It is a high-performance metal strong element flexible coupling. It does not require lubrication, has a compact structure, high strength, long service life, no rotational clearance, is not affected by temperature and oil pollution, and has the characteristics of acid and alkali resistance and corrosion resistance. It is suitable for shaft transmission in high temperature, high speed and corrosive medium working environment.

[0003] In order to study the deformation law of the coupling diaphragm under instantaneous and repeated loads, considering the compact structure and high-speed rotation of the coupling, a wireless deformation detection system suitable for detecting the deformation of the coupling diaphragm under the rotating working state is needed. Currently, there is no similar system on the market. Summary of the invention

[0004] The invention provides a shaft diaphragm wireless displacement acquisition system, which can effectively solve the problems in the background technology.

[0005] The present invention provides 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, and further comprising a displacement sensor, a collector and a fixing seat;

[0006] At least one pair of displacement sensors is provided, and each pair of displacement sensors is symmetrically arranged on the shaft flanges on both sides of the diaphragm; the displacement sensor is connected to the collector; and the fixing seat fixes the collector on the coupling;

[0007] It also includes detection methods, as follows:

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

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

[0010] c) adding the two detected values ​​and comparing them with the result of the two initial additions. If the comparison results are the same or within the set error range, the two detected 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 results are different or exceed the set error range, it is deemed that the results cannot be directly used.

[0012] As a further optimization of the present invention, an alarm device is also provided on the fixing seat, and the alarm device is connected to the collector; when the comparison results in step c are different or exceed the set error range, an alarm is sounded.

[0013] As a further optimization of the present invention, a compensation method is also included:

[0014] d) In step c, if the comparison results are different or exceed the set error range, the detection result is recorded. When it is later detected which displacement sensor has been displaced, the error value is used as the compensation value for compensation.

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

[0016] As a further optimization of the present invention, it also includes a control box; the control box is fixed on the fixing seat, and the collector is arranged in the control box.

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

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

[0019] As a further optimization of the present invention, a battery module and a power display are also provided in the control box; the battery module supplies power to the displacement sensor and the collector; the power display is provided on the outer surface of the control box to display the power of the battery module.

[0020] As a further optimization of the present invention, eight pairs of displacement sensors are provided and are circumferentially distributed on the shaft flange.

[0021] As a further optimization of the present invention, 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.

[0022] The present invention provides a wireless displacement acquisition system for a shaft diaphragm, which can be used to detect the deformation of the diaphragm when the coupling is rotating, and can also effectively screen the displacement sensor for loose displacement that affects the detection results, and even introduce a compensation mechanism to effectively compensate for the results of the displacement sensor after loose displacement without the need for re-detection.

[0023] Instruction Manual

[0024] Figure 1 It is a schematic diagram of the structure of this embodiment;

[0025] Figure 2 yes Figure 1Schematic diagram of the installation of the displacement sensor;

[0026] Figure 3 yes Figure 1 Schematic diagram of the interior of the middle control box;

[0027] Figure 4 yes Figure 1 Schematic diagram of the structure of the middle fixed seat;

[0028] Among them, there are coupling 1, shaft flange 1a, diaphragm 1b, displacement sensor 2, control box 3, collector 4, inclination sensor 5, wireless signal transmitter 6, power display 7, fixing seat 8, clamp 8a, and horizontal seat 8b. DETAILED DESCRIPTION

[0029] like Figure 1-4 As shown, this embodiment is applied to the diaphragm coupling 1. In the diaphragm coupling 1, the diaphragm 1b is arranged between two shaft flanges 1a of the coupling 1 and fixed by bolts.

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

[0031] The displacement sensor 2 is used to detect the deformation of the diaphragm 1b. In this embodiment, the displacement sensor 2 adopts an eddy current displacement sensor of 0 to 10 mm. The eddy current displacement sensor works based on the eddy current effect, that is, a metal conductor is placed in a changing magnetic field to generate an induced current, thereby forming a self-closed eddy current line in the metal body. This phenomenon is called the eddy current effect. The eddy current probe is a flat coil fixed on a frame, and the excitation source frequency is relatively high (10kHz to 10MHz). In other embodiments, the displacement sensor 2 may also adopt a laser sensor, etc.

[0032] At least one pair of displacement sensors 2 is provided. In this embodiment, eight pairs are provided. The eight pairs of displacement sensors 2 are symmetrically provided on the shaft flanges 1a on both sides of the diaphragm 1b. Symmetry means that a pair of displacement sensors 2 are in a straight line. The displacement sensor 2 is connected to the collector 4.

[0033] The fixing seat 8 in this embodiment includes two semi-arc hoops 8a and a horizontal seat 8b. The two semi-arc hoops 8a are provided with mounting ears on both sides. After the two hoops 8a hold the coupling 1 from both sides, bolts are passed through the mounting ears of the two hoops 8a at the same time to fix the two hoops 8a. The outer arc surface of the hoops 8a is provided with a horizontal seat 8b. In this embodiment, both hoops 8a are provided with a horizontal seat 8b, and the two horizontal seats 8b are parallel to each other. In other embodiments, only one horizontal seat 8b may be provided.

[0034] The collector 4 adopts domestically developed 8-channel data acquisition, and the collector 4 is fixed on the fixed seat 8. Specifically, the present embodiment adopts the control box 3, and the control box 3 is fixed on the horizontal seat 8b. The collector 4 is arranged in the control box 3. The control box 3 is provided with a data interface of the displacement sensor 2, the displacement sensor 2 is connected to the data interface, and 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 this embodiment, a wireless signal transmitter 6 is further provided in the control box 3 , and the wireless signal transmitter 6 is connected to the collector 4 , and the collector 4 sends the collected information to an external terminal through the wireless signal transmitter 6 .

[0036] In this embodiment, the control box 3 is further provided with an inclination sensor 5, which is connected to the collector 4. The inclination sensor 5 can be used as a start signal for the collector 4. When the inclination sensor 5 detects that the coupling 1 starts to rotate, it sends a signal to the collector 4, and the collector 4 controls the displacement sensor 2 to start working.

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

[0038] This embodiment also includes a detection method, as follows:

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

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

[0041] c) Add the two detection values ​​and compare them with the results of the two initial additions. If the comparison results are the same or within the set error range, it can be shown that the pair of displacement sensors 2 have not loosened or displaced during the rotation of the coupling 1. Of course, it is also possible that the pair of displacement sensors 2 move in the same direction at the same time and move exactly the same distance, but the probability of this possibility is extremely low, so it can be ignored.

[0042] Then, the two detected 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 results are different or exceed the set error range, it can be explained that the pair of displacement sensors 2 have loosened and displaced during the rotation of the coupling 1. The detection value at this time must be inaccurate and should not be easily accepted.

[0044] d) However, the result after the loose displacement in step c can be recorded, and when it is later detected which displacement sensor 2 has been displaced, the error value can be used as the compensation value for compensation, so that the step of re-detection can be omitted, of course, the premise is that only one of the pair of displacement sensors 2 has loose displacement. If both of the pair of displacement sensors 2 have loose displacement, the compensation calculation needs to be performed after the loose displacement amount is detected.

[0045] Preferably, an alarm device may be provided on the fixing seat 8, and the alarm device is connected to the collector 4. When the comparison result in step c is different or exceeds the set error range, an alarm is given to promptly convey the situation that the displacement detector sends a loose displacement.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

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, and characterized in that: It also includes a displacement sensor, a collector and a fixing seat; At least one pair of displacement sensors is provided, and each pair of displacement sensors is symmetrically arranged on the shaft flanges on both sides of the diaphragm; the displacement sensor is connected to the collector; the fixing seat fixes the collector on the coupling; It also includes 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 detected as detection values; c) adding the two detected values ​​and comparing the result of the two initial additions. If the comparison results are the same or within the set error range, the two detected values ​​are respectively subtracted from the two initial values, and the difference is identified as the deformation amount of the diaphragm; If the comparison results are different or exceed the set error range, it is deemed that the results cannot be directly used.

2. The wireless displacement acquisition system for shaft diaphragms according to claim 1 is characterized in that: The fixing seat is also provided with an alarm device, which is connected to the collector; when the comparison results in step c are different or exceed the set error range, an alarm is sounded.

3. The shaft diaphragm wireless displacement acquisition system according to claim 1 is characterized in that: A compensation method is also included: d) In step c, if the comparison results are different or exceed the set error range, the detection result is recorded. When it is later detected which displacement sensor has been displaced, the error value is used as the compensation value for compensation.

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

5. The shaft diaphragm wireless displacement acquisition system according to claim 1 is characterized in that: It also includes a control box; the control box is fixed on a fixing seat, and the collector is arranged in the control box.

6. The shaft diaphragm wireless displacement acquisition system according to claim 5 is characterized in that: A wireless signal transmitter is also arranged in the control box, and the wireless signal transmitter is connected to the collector.

7. The wireless displacement acquisition system for shaft-type diaphragms according to claim 5 is characterized in that: A tilt sensor is also arranged in the control box, and the tilt sensor is connected to the collector.

8. The shaft diaphragm wireless displacement acquisition system according to claim 5, characterized in that: A battery module and a power display are also arranged in the control box; 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 of the battery module.

9. The wireless displacement acquisition system for shaft-type diaphragms according to claim 5 is characterized in that: The displacement sensors are arranged in eight pairs and are circumferentially distributed on the shaft flange.

10. The shaft diaphragm wireless displacement acquisition system according to claim 5, characterized in that: The fixing seat comprises two semi-arc hoops and a horizontal seat; the two semi-arc hoops are fixed by bolts to clamp the coupling from both sides; the horizontal seat is horizontally fixed on the hoops; and the control box is fixed on the horizontal seat.

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