CN216206235U - Flange radial displacement monitoring system based on split type displacement sensor - Google Patents

Abstract

The utility model provides a flange radial displacement monitoring system based on a split displacement sensor, which comprises the split displacement sensor and a data acquisition instrument or an edge calculation gateway, wherein the split displacement sensor is connected with the data acquisition instrument or the edge calculation gateway and transmits a measured displacement signal, the split displacement sensor consists of a limiting block and a sensor body which are separated from each other, the limiting block and the sensor body are connected through a magnet, the limiting block is L-shaped, the limiting block and the sensor body jointly form a frame structure and are respectively fixed on two mutually connected flanges, and a vertical cushion block is fixedly connected between the limiting block and the side wall of the flange far away from the sensor body. The monitoring system can monitor the radial relative displacement of the flange and has the advantages of high monitoring precision and convenience in installation.

Description

Flange radial displacement monitoring system based on split type displacement sensor

Technical Field

The utility model relates to an online flange monitoring system, in particular to a flange radial displacement monitoring system based on a split type displacement sensor.

Background

The flange connection is an important connection mode, is extremely common in the current industrial field and plays an important role. The flange connecting structure bears the cyclic action of tension and compression under the action of alternating load. Under the action of alternating tension and compression loads, phenomena of vibration relaxation, leakage, structural slippage and the like are generated, so that the normal work of a machine is influenced, and therefore the regular maintenance of the flange connection structure is very important. When the operation and maintenance is in a remote zone, the regular inspection operation and maintenance strategy of the flange is generally performed once in half a year. The work is time-consuming and labor-consuming, and due to the influence of multiple factors in subjective and objective aspects of workers, problems cannot be found and eliminated timely at each time, so that the flange connection structure needs to be monitored on line.

The digital displacement sensor has the advantages of easy digitization, high precision, strong anti-interference capability, no artificial reading error, convenient installation, reliable use and the like, and is increasingly widely applied in the industries of machine tool processing, detecting instruments, aviation and the like. Currently, the state of the flange can be monitored by mounting a displacement sensor on the flange and by using the displacement sensor. The technical scheme has the advantages of simple and visual principle, convenience in field installation, high technical reliability, no need of manual monitoring and the like. However, for different application places, the structural form and the installation form of the required displacement sensor are different, and a monitoring scheme capable of monitoring the radial relative displacement of the flange is not found at present.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model provides a flange radial displacement monitoring system based on a split type displacement sensor, which can monitor the radial relative displacement of a flange and has the advantages of high monitoring precision and convenience in installation.

The technical scheme adopted for realizing the above purpose of the utility model is as follows:

the utility model provides a flange radial displacement monitoring system based on split type displacement sensor, includes split type displacement sensor and data acquisition appearance or edge calculation gateway, and wherein split type displacement sensor is connected and transmits the displacement signal that records with data acquisition appearance or edge calculation gateway, split type displacement sensor comprises the stopper and the sensor body of alternate segregation, and stopper and sensor body pass through the magnet and connect, the stopper is "L" style of calligraphy, and stopper and sensor body constitute the frame type structure jointly and are fixed in respectively on two interconnect's flange, fixedly connected with erects the cushion between the lateral wall of keeping away from the sensor body on stopper and the flange.

The thickness of the vertical cushion block is 1-15 mm.

And reinforcing ribs are embedded in the limiting blocks.

The side of the vertical cushion block close to the flange is arc-shaped and matched with the shape of the flange, and the side of the vertical cushion block close to the limiting block is a plane.

And a transverse cushion block is fixedly connected between the limiting block and the upper surface or the lower surface of the flange.

The limiting blocks, the vertical cushion blocks, the transverse cushion blocks and the flanges are fixedly connected through bonding, magnetic connection or threaded connection.

The sensor body and the flange are fixedly connected through bonding, magnetic connection or threads.

The split displacement sensors are more than one and are uniformly distributed on the inner circumference of the flange.

Compared with the prior art, the technical scheme provided by the utility model has the following advantages: 1. according to the utility model, the sensor body and the limiting block of the split type displacement sensor form a frame structure together and are respectively fixed on the two connecting flanges, the sensor body is fixed on the upper surface or the lower surface of the flange, the limiting block is fixed on the side wall, far away from the sensor body, of the flange through the vertical cushion block, when the flange is radially deformed, the split type displacement sensor monitors the change of the radial relative displacement of the flange and outputs the monitored signal to the upper computer, so that the monitoring of the radial displacement of the flange is realized. 2. According to the utility model, the vertical cushion block is positioned on the side wall of the flange far away from the sensor body, so that the distance between the contact position of the limiting block and the sensor body and the fixed position of the limiting block is maximized, and when the flange is integrally deformed in the same radial direction, the sensor can monitor larger deformation, the sensitivity of flange radial displacement monitoring is improved, and the monitoring precision is high. 3. The split type displacement sensor is convenient to install, and the transverse cushion blocks are arranged, so that the split type displacement sensor can be suitable for flanges with different sizes, and the limit blocks are ensured to be in good contact with the sensor body. 4. According to the utility model, the reinforcing ribs are embedded in the limiting block, so that the rigidity of the limiting block is improved, and the monitoring error caused by the elastic deformation of the limiting block is reduced.

Drawings

FIG. 1 is an installation schematic diagram of a flange radial displacement monitoring system based on a split displacement sensor in the utility model;

FIG. 2 is a structural diagram of a limiting block in the present invention;

wherein (a) and (b) are respectively a three-dimensional structure diagram of the lower limiting blocks in different directions;

FIG. 3 is a structural view of a vertical spacer in the present invention;

FIG. 4 is a view showing the construction of the cross spacer of the present invention;

FIG. 5 is a schematic cross-sectional view of a sensor body according to the present invention;

FIG. 6 is a schematic view of the external structure of the sensor body according to the present invention;

in the figure: 1-upper flange, 2-lower flange, 3-limiting block, 4-sensor body, 41-shell, 42-PCB assembly, 43-guide rod, 44-sliding base body, 45-high precision magnet, 46-magnet, 47-limiting spring, 48-cover plate, 5-vertical cushion block and 6-horizontal cushion block.

Detailed Description

The present invention will be described in detail with reference to the following embodiments and drawings, but the scope of the present invention is not limited to the following embodiments.

The flange radial displacement monitoring system based on the split type displacement sensor comprises the split type displacement sensor and a data acquisition instrument or an edge calculation gateway, wherein the split type displacement sensor is connected with the data acquisition instrument or the edge calculation gateway and transmits a measured displacement signal. The split displacement sensors are more than one and are uniformly distributed on the inner circumference of the flange.

Split type displacement sensor comprises mutually separated stopper 3 and sensor body 4, and stopper and sensor body pass through the magnet and connect, and split type displacement sensor installs on interconnect's upper flange 1 and lower flange 2, and split type displacement sensor installation schematic diagram on the flange is shown in fig. 1, the stopper is "L" style of calligraphy, and the stopper is embedded to be equipped with the strengthening rib to improve the rigidity of stopper, reduce the monitoring error that leads to because of stopper self elastic deformation, the structure of stopper is shown in fig. 2. Stopper and sensor body constitute the frame type structure jointly and are fixed in respectively on two interconnect's flange, and wherein the sensor body is fixed in the upper surface of last flange or the lower surface of lower flange through modes such as bonding, magnetic force connection or threaded connection, and in this embodiment, the sensor body is fixed in the upper surface of last flange, and the stopper that corresponds is connected on the lower flange. If the sensor body is fixed on the lower surface of the lower flange, the limiting block is correspondingly connected to the upper flange. When the flange connecting structure slides, the flange can generate relative displacement along the radial direction, and the sensor body and the limiting block can also generate relative displacement along the radial direction, so that the split type displacement sensor can monitor the change of the radial relative displacement of the flange and output the monitored signal to an upper computer, and the monitoring of the flange connecting structure is realized.

The stopper corresponds to be connected on the lower flange in this embodiment, and fixedly connected with erects cushion 5 between the lateral wall of keeping away from the sensor body on stopper and the lower flange for the distance maximize between the fixed position of the same radial deformation's that appears in the flange whole under the condition, bigger deflection can be monitored to the sensor, improves the sensitivity of flange radial displacement monitoring. The thickness of erecting the cushion is 1 ~ 15mm, and the actual thickness of erecting the cushion adjusts according to the installation needs to realize the good contact of stopper and sensor body, erect the structure of cushion and show in fig. 3. One surface, close to the flange, of the vertical cushion block is arc-shaped and matched with the shape of the flange, and when the size of the flange is large, one surface, close to the flange, of the vertical cushion block is close to a plane; the side of the vertical cushion block close to the limiting block is a plane, so that the reliable and stable connection between the limiting block and the flange is ensured.

In this embodiment, if the height of flange and the length deviation of stopper are great or the flange is lower with the machining precision of stopper, when the error is great, fixedly connected with cross bearer piece 6 between the lower surface of stopper and lower flange, the thickness of cross bearer piece is adjusted according to the installation needs, ensures the good contact of stopper and sensor body and the stable fixed of stopper, and the structure of cross bearer piece is as shown in fig. 4. In this embodiment, the limiting block, the vertical cushion block, the horizontal cushion block and the flange are fixed through bonding, magnetic connection or threaded connection.

Split type displacement sensor's structure is as shown in fig. 5 and fig. 6 in this embodiment, and the sensor body includes casing 41, be located PCB subassembly 42 and guide arm 43, cover on the guide arm and can follow the gliding slip base member 44 of guide arm and be fixed in on the slip base member and along with slip base member synchronous motion's high-accuracy magnet 45, and the top surface of casing is provided with the opening, and the opening part is provided with apron 48, casing and apron are stainless steel, wholly adopt the metal casing design, and the casing is inside still to be provided with electromagnetic interference resistance circuit simultaneously, consequently can shield external interference to the product, and product stability is extremely strong. The outer end of the sliding base body extends out of the shell, the outer end of the sliding base body is provided with a magnet 46 and is fixed on the limiting block through magnetic adsorption, and the magnet is a strong-magnetism permanent magnet. The inner end of the sliding base body is a sliding block sleeved on the guide rod, two ends of the guide rod are respectively sleeved with a limiting spring 47, and the limiting springs are located on the left side and the right side of the sliding block and limit the sliding block to be located in the middle of the guide rod in a free state. The PCB assembly comprises a high-precision electromagnetic induction chip and a single chip microcomputer. When the radial relative displacement of the upper flange and the lower flange changes, the sliding base body slides left and right along the guide rod, and the sliding base body drives the high-precision magnet to move while sliding. The displacement measurement device comprises a PCB assembly, a high-precision electromagnetic induction chip, a singlechip, a data acquisition instrument or an edge calculation gateway, wherein the PCB assembly comprises a high-precision magnet, the high-precision electromagnetic induction chip is arranged on the PCB assembly, the magnetic field around the high-precision electromagnetic induction chip is changed along with the movement of the high-precision magnet, the high-precision electromagnetic induction chip CAN quickly capture the change of the magnetic field, electromagnetic induction signals are acquired through the singlechip, then data are processed inside the singlechip, the singlechip is connected with the data acquisition instrument or the edge calculation gateway through CAN communication, 485 communication or Ethernet and sends signals to the data acquisition instrument or the edge calculation gateway, so that the displacement measurement is realized, the precision CAN reach 0.5 mu m, and the high-precision relative displacement of a product CAN be continuously monitored with micron-grade precision.

The PCB assembly is also provided with a temperature sensing chip for collecting environmental temperature data, the temperature sensing chip is a precise integrated digital temperature sensing chip and has the characteristic of high resolution, and the measurement precision is +/-0.5 ℃. The temperature sensing chip firstly samples temperature data of an external environment, and then transmits the sampling value to the single chip microcomputer through an I2C protocol with the single chip microcomputer; the single chip microcomputer calculates the acquired temperature data and transmits the temperature data to the data acquisition instrument or the edge computing gateway through signal communication.

The PCB assembly is also provided with a vibration sensing chip, and the vibration sensing chip adopts a chip leading in the industry, and has the characteristics of high resolution, extremely low power consumption and long-term stability; the resolution ratio of the vibration sensing chip is 1mg, the measurement range is +/-5 g, and the vibration quantity of an X axis, a Y axis and a Z axis can be acquired simultaneously. The vibration sensing chip firstly samples external vibration signals, and then the internal vibration signals are converted into level signals to be transmitted to the single chip microcomputer; the single chip microcomputer calculates the acquired vibration data and transmits the vibration data to the data acquisition instrument or the edge computing gateway through signal communication.

Claims (8)

1. The utility model provides a flange radial displacement monitoring system based on split type displacement sensor, includes split type displacement sensor and data acquisition appearance or edge calculation gateway, and wherein split type displacement sensor is connected and transmits the displacement signal that records with data acquisition appearance or edge calculation gateway, split type displacement sensor comprises the stopper and the sensor body of alternate segregation, and stopper and sensor body pass through the magnet and connect its characterized in that: the stopper is "L" style of calligraphy, and stopper and sensor body constitute the frame type structure jointly and are fixed in respectively on two interconnect's flange, fixedly connected with erects the cushion between the lateral wall of keeping away from the sensor body on stopper and the flange.

2. The split displacement sensor-based flange radial displacement monitoring system of claim 1, wherein: the thickness of the vertical cushion block is 1-15 mm.

3. The split displacement sensor-based flange radial displacement monitoring system of claim 1, wherein: and reinforcing ribs are embedded in the limiting blocks.

4. The split displacement sensor-based flange radial displacement monitoring system of claim 1, wherein: the side of the vertical cushion block close to the flange is arc-shaped and matched with the shape of the flange, and the side of the vertical cushion block close to the limiting block is a plane.

5. The split displacement sensor-based flange radial displacement monitoring system of claim 1, wherein: and a transverse cushion block is fixedly connected between the limiting block and the upper surface or the lower surface of the flange.

6. The split displacement sensor-based flange radial displacement monitoring system of claim 5, wherein: the limiting blocks, the vertical cushion blocks, the transverse cushion blocks and the flanges are fixedly connected through bonding, magnetic connection or threaded connection.

7. The split displacement sensor-based flange radial displacement monitoring system of claim 1, wherein: the sensor body and the flange are fixedly connected through bonding, magnetic connection or threads.

8. The split displacement sensor-based flange radial displacement monitoring system of claim 1, wherein: the split displacement sensors are more than one and are uniformly distributed on the inner circumference of the flange.

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