Flange parallelism measuring device and system

Abstract

The utility model relates to a flange parallelism measuring device and system. The flange parallelism measuring device comprises a plurality of range finders, a plurality of receivers, a control module and a display module. According to the flange parallelism measuring device, the plurality of distance measuring sensors are arranged in the circumferential direction of the flange, original data of the distance measuring sensors are analyzed through the control module to obtain parallelism data, and the parallelism data are displayed through the display module, so that an operator can obtain more accurate parallelism data, screw rods in the circumferential direction of the flange are adjusted, and the accuracy of the flange parallelism measuring device is improved. Stress stability of the gasket is ensured, and uniform thickness of the gasket in the circumferential direction of the flange assembly is ensured.

Description

Technical Field

[0001] This application relates to the field of flange parallelism measurement technology, and in particular to flange parallelism measurement devices and systems. Background Technology

[0002] Flange parallelism needs to be measured three to four times during flange installation. After tightening the flange bolts to 30%, 60%, 90%, and 100% of the standard torque, the flange parallelism is measured again to allow for timely adjustment of the bolt tightening sequence and prevent excessive parallelism or misalignment of the flange gasket. Installing a pair of flanges requires four flange parallelism measurements, plus QC personnel verifying the parallelism, totaling five measurements, and at least 20 flange clearance measurements. This method is inefficient, takes place in confined spaces, and the results are significantly affected by human factors.

[0003] In existing flange parallelism measurement technology, an extended circular bar is set at a certain position in the circumference of the flange, and an angle measuring instrument is installed on the extended circular bar. The instrument is equipped with multiple detectors arranged in a circle or square, and the deflection angle of the flange is measured by measuring the distance of the multiple detectors.

[0004] However, the aforementioned measuring device cannot measure around the flange circumference. If the maximum deflection angle of the flange needs to be accurately measured, multiple measurements are required. Otherwise, it is easy to measure the angle perpendicular to the deflection direction. If the number of detectors is insufficient, the measured deflection data will be inaccurate. Utility Model Content

[0005] Therefore, it is necessary to provide a flange parallelism measuring device and system to address the problem that existing flange parallelism measuring devices cannot accurately measure deflection data, resulting in large errors in the measured parallelism data.

[0006] A flange parallelism measuring device is used to measure the parallelism between a first flange and a second flange of a flange assembly. The flange parallelism measuring device includes:

[0007] Multiple rangefinders are arranged sequentially around the circumference of the first flange, with the measuring heads of the rangefinders facing the second flange;

[0008] Multiple receivers are arranged sequentially around the circumference of the second flange, and each of the multiple receivers corresponds to a multiple of the rangefinders. The receivers are used to receive signals emitted by the corresponding rangefinders.

[0009] A control module, connected to the rangefinder and the receiver, is used to receive raw data measured by the rangefinder and calculate parallelism data based on the raw data; and

[0010] A display module, connected to the control module, is used to display the original data and the parallelism data; the parallelism data is the difference between the maximum and minimum values ​​among multiple original data.

[0011] In practical use, the aforementioned flange parallelism measuring device first arranges multiple rangefinders around the circumference of the first flange and connects them to the edge of the first flange's circumference, facing the second flange. Then, multiple receivers are arranged around the circumference of the second flange and connected to it. Each receiver corresponds to one of the rangefinders to receive signals from the rangefinders. The rangefinders transmit signals to the receivers. The control module is connected to the rangefinders and receivers to receive the raw data measured by the rangefinders. After the raw data is transmitted to the control module, the control module calculates the parallelism data by calculating the difference between the maximum and minimum values ​​of the raw data. The control module then transmits the raw data and parallelism data to the display module for display. This embodiment, by setting multiple rangefinders around the flange and analyzing the raw data from the rangefinders through the control module to obtain parallelism data, displays it on the display module. This allows operators to obtain more accurate parallelism data, enabling them to adjust the bolts around the flange circumference to ensure stable force on the gasket and uniform thickness of the gasket along the flange assembly's circumference.

[0012] In one embodiment, the flange parallelism measuring device further includes a plurality of first fixing frames and a plurality of second fixing frames;

[0013] Multiple first fixing frames are arranged sequentially around the circumference of the first flange and connected to the first flange, and each of the rangefinders is correspondingly set on the first fixing frame.

[0014] Multiple second fixing brackets are arranged sequentially around the circumference of the second flange and connected to the second flange. Each receiver is disposed on the side of the second fixing bracket close to the first fixing bracket.

[0015] In one embodiment, the first fixing frame includes a first clamping part and a first connecting member. The first clamping part clamps the edge of the first flange, the first connecting member is connected to the end of the first clamping part opposite to the first flange and extends radially along the first flange, and the rangefinder is connected to the first connecting member.

[0016] The second fixing frame includes a second clamping part and a second connecting member. The second clamping part clamps the edge of the second flange. The second connecting member is connected to the end of the second clamping part away from the second flange and extends radially along the second flange. The receiver is disposed on the side of the second connecting member close to the first connecting member.

[0017] In one embodiment, the first fixing bracket further includes a first fastener, the first clamping part has a first connecting hole along the axial direction of the first flange, and the first fastener is detachably inserted through the first connecting hole and abuts against the side of the first flange opposite to the second flange.

[0018] The second fixing bracket further includes a second fastener. The second clamping part has a second connecting hole along the axial direction of the second flange. The second fastener is detachably inserted through the second connecting hole and abuts against the side of the second flange away from the first flange.

[0019] In one embodiment, the display module includes a plurality of first display screens, which are connected to the control module. Each of the first display screens corresponds to a plurality of rangefinders and displays the raw data detected by the corresponding rangefinder.

[0020] In one embodiment, the flange parallelism measuring device further includes multiple indicator lights, each of which corresponds to one of the multiple first displays. When the raw data displayed on one of the first displays is at its maximum, the corresponding indicator light emits a light signal.

[0021] In one embodiment, the display module further includes a second display screen connected to the control module, the second display screen being used to display the parallelism data.

[0022] In one embodiment, the flange parallelism measuring device further includes an alarm connected to the control module, the alarm being used to issue an alarm signal when the parallelism data is greater than a preset value.

[0023] In one embodiment, the flange parallelism measuring device further includes a setting module connected to the control module. The setting module includes a power button, a measurement button, a confirmation button, a delete button, and a numeric keypad. The power button is used to turn on the flange parallelism measuring device, the measurement button is used to control the rangefinder to perform distance measurement, and the numeric keypad, the delete button, and the confirmation button are used to set preset values.

[0024] An embodiment of this application also provides a flange parallelism measurement system, the flange parallelism measurement system comprising: a remote module and the flange parallelism measuring device;

[0025] The remote module is connected to the control module and is used to remotely control and set the parallelism measuring device.

[0026] In practical use, the aforementioned flange parallelism measuring device first arranges multiple rangefinders around the circumference of the first flange and connects them to the edge of the first flange's circumference, facing the second flange. Then, multiple receivers are arranged around the circumference of the second flange and connected to it. Each receiver corresponds one-to-one with a rangefinder to receive signals from the rangefinders. The rangefinders transmit signals to the receivers. The control module is connected to the rangefinders and receivers to receive the raw data measured by the rangefinders. After the raw data is transmitted to the control module, the control module calculates the parallelism data by taking the difference between the maximum and minimum values ​​of the raw data. The control module then transmits the raw data and parallelism data to the display module for display. Furthermore, the device can be connected to a remote module for remote control and settings, making it suitable for nuclear power plant scenarios. The above embodiment sets multiple distance sensors around the flange and analyzes the raw data from the distance sensors through the control module to obtain parallelism data, which is then displayed through the display module. This allows the operator to obtain more accurate parallelism data, thereby adjusting the bolts around the flange to ensure stable force on the gasket and uniform thickness of the gasket along the circumference of the flange assembly. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of a flange assembly according to one embodiment.

[0028] Figure 2 for Figure 1 Enlarged view of the flange parallelism measuring device installed on the flange assembly at point A.

[0029] Figure 3 for Figure 1 Enlarged view of the control module, display module, indicator lights, alarm, and setting module.

[0030] Figure 4 for Figure 1 The left view.

[0031] Figure 5 for Figure 1 The right view.

[0032] Explanation of icon numbers:

[0033] 10 - Flange parallelism measuring device;

[0034] 100-rangefinder;

[0035] 200-Receiver;

[0036] 300 - Control Module;

[0037] 400 - Display module; 410 - First display screen; 420 - Second display screen;

[0038] 500 - First fixing frame; 510 - First clamping part; 511 - First clamping member; 512 - Second clamping member; 513 - Third connecting member; 511a - First connecting hole; 520 - First connecting member; 530 - First fastener;

[0039] 600 - Second fixing bracket; 610 - Second clamping part; 611 - Third clamping member; 612 - Fourth clamping member; 613 - Fourth connecting member; 611a - Second connecting hole; 620 - Second connecting member; 630 - Second fastener;

[0040] 700 - Indicator Light;

[0041] 800-alarm;

[0042] 900 - Setup Module; 910 - Power On Button; 920 - Measurement Button; 930 - Confirm Button; 940 - Delete Button; 950 - Numeric Keypad;

[0043] 20-Flange assembly; 21-First flange; 22-Second flange; 23-Gasket. Detailed Implementation

[0044] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0045] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0046] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0047] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0048] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0049] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0050] See Figure 1 and Figure 2 , Figure 2 This paper shows a schematic diagram of the flange parallelism measuring device 10 installed on the flange assembly 20 according to an embodiment of this application, wherein, see reference Figure 1The flange assembly 20 includes a first flange 21, a second flange 22, and a gasket 23, with the gasket 23 located between the first flange 21 and the second flange 22. An embodiment of this application provides a flange parallelism measuring device 10, which includes a plurality of rangefinders 100, a plurality of receivers 200, a control module 300, and a display module 400.

[0051] In the aforementioned flange parallelism measuring device 10, see [reference] Figure 4 Multiple rangefinders 100 are arranged sequentially around the circumference of the first flange 21, with the measuring heads of the rangefinders 100 facing the second flange 22. (See reference...) Figure 5 Multiple receivers 200 are arranged sequentially around the second flange 22 circumferentially. Each receiver 200 corresponds one-to-one with a rangefinder 100 and is used to receive signals transmitted by the corresponding rangefinder 100. The number of receivers 200 is the same as the number of rangefinders 100, and each receiver 200 is coaxial with its corresponding rangefinder 100. A control module 300 is connected to the rangefinders 100 and the receivers 200, and is used to receive the raw data measured by the rangefinders 100. The raw data is the distance between the first flange 21 and the second flange 22 at that location, as measured by the rangefinders 100 and the receivers 200, and to calculate the parallelism data. (See reference...) Figure 3 The display module 400 is connected to the control module 300 and is used to display the raw data and parallelism data. The parallelism data is the difference between the maximum and minimum values ​​among multiple raw data.

[0052] In actual use, the flange parallelism measuring device 10 first arranges multiple rangefinders 100 around the circumference of the first flange 21 and connects them to the circumferential edge of the first flange 21, facing the second flange 22. Then, multiple receivers 200 are arranged around the circumference of the second flange 22 and connected to it. Each receiver 200 corresponds one-to-one with a rangefinder 100 to receive signals from the rangefinders 100. The rangefinders 100 transmit signals to the receivers 200. The control module 300 is connected to the rangefinders 100 and the receivers 200 to receive the raw data measured by the rangefinders 100. After the raw data is transmitted to the control module 300, the control module 300 calculates the parallelism data based on the difference between the maximum and minimum values ​​of the raw data. The control module 300 then transmits the raw data and parallelism data to the display module 400 for display.

[0053] Each rangefinder 100 measures the distance from the first flange 21 to the second flange 22. If the two flanges are perfectly parallel, the measurements from all rangefinders 100 should be identical. If the two flanges are not parallel, rangefinders 100 at different positions will measure different distance values, i.e., there are maximum and minimum values. The difference between the maximum and minimum values ​​reflects the maximum distance difference between the two flanges. The larger the difference, the worse the parallelism between the two flanges; the smaller the difference, the closer the two flanges are to parallelism. The above embodiment uses multiple rangefinders arranged circumferentially around the flanges. The raw data from the rangefinders is analyzed by the control module 300 to obtain parallelism data, which is then displayed by the display module 400. This allows operators to obtain more accurate parallelism data, enabling them to adjust the bolts circumferentially around the flanges to ensure stable force on the gasket 23 and uniform thickness of the gasket 23 along the circumference of the flange assembly 20.

[0054] The rangefinder 100 can be a laser rangefinder or other sensors, such as light or sound sensors. One method for transmitting the raw data is that the receiver 200 directly transmits the ranging signal to the control module 300, or the rangefinder 100 transmits a signal to the receiver 200, the receiver 200 returns the signal to the rangefinder 100, and the rangefinder 100 transmits the raw data to the control module 300.

[0055] It should be noted that the more rangefinders there are and the more evenly they are distributed, the more accurate the measurement results will be. If the number of rangefinders is too small or their distribution is uneven, distance differences at certain locations may be missed. Preferably, multiple rangefinders 100 are evenly arranged around the circumference of the first flange 21, wherein the number of rangefinders 100 is at least four.

[0056] See Figure 1 and Figure 2 In one embodiment, the flange parallelism measuring device 10 further includes a plurality of first fixing frames 500 and a plurality of second fixing frames 600. The plurality of first fixing frames 500 are arranged sequentially around the circumference of the first flange 21 and connected to the first flange 21, with each rangefinder 100 correspondingly disposed on a first fixing frame 500. The plurality of second fixing frames 600 are arranged sequentially around the circumference of the second flange 22 and connected to the second flange 22, with each receiver 200 correspondingly disposed on the side of the second fixing frame 600 near the first fixing frame 500.

[0057] In this embodiment, the rangefinder 100 is connected to the first flange 21 by the first mounting bracket 500, and the receiver 200 is connected to the second flange 22 by the second mounting bracket 600. This facilitates the installation of the rangefinder 100 and the receiver 200 in a specific position, making it convenient to measure different flanges and improving adaptability.

[0058] See Figure 1 In one embodiment, the first fixing frame 500 includes a first clamping part 510 and a first connecting member 520. The first clamping part 510 is clamped to the edge of the first flange 21. The first connecting member 520 is connected to the end of the first clamping part 510 away from the first flange 21 and extends radially along the first flange 21. The rangefinder 100 is connected to the first connecting member 520.

[0059] The second mounting bracket 600 includes a second clamping portion 610 and a second connecting member 620. The second clamping portion 610 clamps the edge of the second flange 22, and the second connecting member 620 is connected to the end of the second clamping portion 610 opposite to the second flange 22 and extends radially along the second flange 22. The receiver 200 is disposed on the side of the second connecting member 620 near the first connecting member 520.

[0060] In this embodiment, the fixing bracket is positioned on the edge of the flange by clamping the flange edge with a clamping member. Furthermore, the first connecting member 520 extends radially along the first flange 21, and the second connecting member 620 extends radially along the second flange 22, increasing the distance between the measurement position and the flange center. This effectively enlarges the ranging data proportionally, improving the accuracy of the original measured data without changing the accuracy of the ranging sensor.

[0061] Specifically, the rangefinder 100 is inserted through the first connector 520 and faces the corresponding receiver 200, wherein the receiver 200 can be a data receiving screen or a reflective surface, and the specific measurement method is not limited here.

[0062] See Figure 1 In one embodiment, the first fixing bracket 500 further includes a first fastener 530. A first clamping portion 510 has a first connecting hole 511a along the axial direction of the first flange 21. The first fastener 530 is detachably inserted through the first connecting hole 511a and abuts against the side of the first flange 21 opposite to the second flange 22. The second fixing bracket 600 further includes a second fastener 630. A second clamping portion 610 has a second connecting hole 611a along the axial direction of the second flange 22. The second fastener 630 is detachably inserted through the second connecting hole 611a and abuts against the side of the second flange 22 opposite to the first flange 21.

[0063] In this embodiment, the first clamping part 510 includes a first clamping member 511, a second clamping member 512, and a third connecting member 513. The two ends of the third connecting member 513 are respectively connected to the first clamping member 511 and the second clamping member 512. The first clamping member 511 is located on the side of the first flange 21 away from the second flange 22, and the second clamping member 512 is located on the side of the first flange 21 close to the second flange 22. The first clamping member 511 has a first connecting hole 511a along the axial direction of the first flange 21. The first fastener 530 is threaded into the first connecting hole 511a and abuts against the side of the first flange 21 away from the second flange 22, thereby detachably connecting the first clamping part 510 to the first flange 21.

[0064] Similarly, the second clamping part 610 includes a third clamping member 611, a fourth clamping member 612, and a fourth connecting member 613. The two ends of the fourth connecting member 613 are connected to the third clamping member 611 and the fourth clamping member 612, respectively. The fourth clamping member 612 is located on the side of the second flange 22 away from the first flange 21, and the third clamping member 611 is located on the side of the second flange 22 close to the first flange 21. The fourth clamping member 612 has a second connecting hole 611a along the axial direction of the second flange 22. The second fastener 630 is threaded into the second connecting hole 611a and abuts against the side of the second flange 22 away from the first flange 21, thereby detachably connecting the second clamping part 610 and the second flange 22.

[0065] See Figure 3 In one embodiment, the display module 400 includes a plurality of first display screens 410, which are connected to the control module 300. The plurality of first display screens 410 correspond one-to-one with the plurality of rangefinders 100 and display the raw data detected by the corresponding rangefinders 100.

[0066] Specifically, the flange parallelism measuring device also includes a housing, with the control module 300 housed inside the housing. The display module 400, indicator light 700, alarm 800, and setting module 900 are all located on the surface of the housing and extend out of the housing for operation by the operator. The rangefinder 100, receiver 200, display module 400, indicator light 700, alarm 800, and setting module 900 are all connected to the control module 300. The control module 300 can be an existing control device such as a PLC controller.

[0067] See Figure 3In one embodiment, the flange parallelism measuring device 10 further includes multiple indicator lights 700, each corresponding to one of the multiple first display screens 410. When the raw data displayed on one of the first display screens 410 is the largest, the corresponding indicator light 700 emits a light signal. In this embodiment, multiple raw data are displayed one-to-one on the multiple first display screens 410, and the indicator lights 700 indicate which rangefinder 100 has detected the largest distance, thereby facilitating the operator to obtain the location of the largest distance and improving maintenance efficiency.

[0068] See Figure 3 In one embodiment, the display module 400 further includes a second display screen 420 connected to the control module 300, the second display screen 420 being used to display parallelism data.

[0069] See Figure 3 In one embodiment, the flange parallelism measuring device 10 further includes an alarm 800 connected to the control module 300. The alarm 800 is used to issue an alarm signal when the parallelism data exceeds a preset value. In this embodiment, the control module 300 determines whether the parallelism data exceeds the preset value. If it does, the alarm 800 issues an alarm signal to remind the operator, which not only improves maintenance efficiency but also prevents over-tightening during the tightening of different flange connections, thereby protecting the gasket 23.

[0070] See Figure 3 In one embodiment, the flange parallelism measuring device 10 further includes a setting module 900 connected to the control module 300. The setting module 900 includes a power button 910, a measurement button 920, a confirmation button 930, a delete button 940, and a numeric keypad 950. The power button 910 is used to turn on the flange parallelism measuring device 10, the measurement button 920 is used to control the rangefinder 100 to perform distance measurement, and the numeric keypad 950, delete button 940, and confirmation button 930 are used to set a preset value. This preset value is a parallelism preset value, which is a safety value. That is, when the measured parallelism data is less than or equal to this value, the flange is installed in place and the flange can work normally and safely. In this embodiment, preset values ​​can be set via the numeric keypad 950, the delete key 940, and the confirmation key, which facilitates setting preset values ​​for different flanges, thereby improving the applicability of the flange parallelism measuring device 10. The power button 910 and the measuring element are used to place the rangefinder 100 in place and to perform measurements when the flange parallelism measuring device 10 is not properly adjusted, ensuring a stable and efficient measurement process.

[0071] See Figure 2 and Figure 3An embodiment of this application also provides a flange parallelism measurement system. The flange parallelism measurement system (not shown) includes a remote module and a flange parallelism measuring device 10. The remote module (not shown) is connected to a control module 300 and is used to remotely control and set the flange parallelism measuring device 10.

[0072] In actual use, the flange parallelism measuring device 10 first arranges multiple rangefinders 100 around the circumference of the first flange 21 and connects them to the circumferential edge of the first flange 21, facing the second flange 22. Then, multiple receivers 200 are arranged around the circumference of the second flange 22 and connected to it. Each receiver 200 corresponds one-to-one with a rangefinder 100 to receive signals from the rangefinders 100. The rangefinders 100 transmit signals to the receivers 200. The control module 300 is connected to the rangefinders 100 and the receivers 200 to receive the raw data measured by the rangefinders 100. After the raw data is transmitted to the control module 300, the control module 300 calculates the parallelism data by calculating the difference between the maximum and minimum values ​​of the raw data. The control module 300 transmits the raw data and parallelism data to the display module 400 for display. It can also be connected to the control module 300 via a remote module for remote control and settings of the flange parallelism measuring device 10, making it suitable for nuclear power plant scenarios. The above embodiment sets multiple distance sensors around the flange and analyzes the raw data from the distance sensors through the control module 300 to obtain parallelism data, which is then displayed through the display module 400. This allows the operator to obtain more accurate parallelism data, thereby adjusting the bolts around the flange to ensure the stability of the force on the gasket 23 and to ensure that the thickness of the gasket 23 is uniform along the circumference of the flange assembly 20.

[0073] Specifically, the remote module can be an operating terminal device such as a tablet or computer, which connects to the control module via wireless signals such as network signals or satellite signals, in order to transmit signals to the control module and receive signals from the control module.

[0074] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0075] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A flange parallelism measuring device for measuring the parallelism between a first flange and a second flange of a flange assembly, characterized in that, The flange parallelism measuring device includes: Multiple rangefinders are arranged sequentially around the circumference of the first flange, with the measuring heads of the rangefinders facing the second flange; Multiple receivers are arranged sequentially around the circumference of the second flange, and each of the multiple receivers corresponds to a multiple of the rangefinders. The receivers are used to receive signals emitted by the corresponding rangefinders. A control module, connected to the rangefinder and the receiver, is used to receive raw data measured by the rangefinder and calculate parallelism data based on the raw data; and A display module, connected to the control module, is used to display the original data and the parallelism data; the parallelism data is the difference between the maximum and minimum values ​​among multiple original data.

2. The flange parallelism measuring device according to claim 1, characterized in that, The flange parallelism measuring device also includes multiple first fixing frames and multiple second fixing frames; Multiple first fixing frames are arranged sequentially around the circumference of the first flange and connected to the first flange, and each of the rangefinders is correspondingly set on the first fixing frame. Multiple second fixing brackets are arranged sequentially around the circumference of the second flange and connected to the second flange. Each receiver is disposed on the side of the second fixing bracket close to the first fixing bracket.

3. The flange parallelism measuring device according to claim 2, characterized in that, The first fixing frame includes a first clamping part and a first connecting member. The first clamping part clamps the edge of the first flange, and the first connecting member is connected to the end of the first clamping part away from the first flange and extends radially along the first flange. The rangefinder is connected to the first connecting member. The second fixing frame includes a second clamping part and a second connecting member. The second clamping part clamps the edge of the second flange. The second connecting member is connected to the end of the second clamping part away from the second flange and extends radially along the second flange. The receiver is disposed on the side of the second connecting member close to the first connecting member.

4. The flange parallelism measuring device according to claim 3, characterized in that, The first fixing bracket further includes a first fastener. The first clamping part has a first connecting hole along the axial direction of the first flange. The first fastener is detachably inserted through the first connecting hole and abuts against the side of the first flange away from the second flange. The second fixing bracket further includes a second fastener. The second clamping part has a second connecting hole along the axial direction of the second flange. The second fastener is detachably inserted through the second connecting hole and abuts against the side of the second flange away from the first flange.

5. The flange parallelism measuring device according to any one of claims 1-4, characterized in that, The display module includes multiple first display screens, which are connected to the control module. Each of the multiple first display screens corresponds to a multiple rangefinder and displays the raw data detected by the corresponding rangefinder.

6. The flange parallelism measuring device according to claim 5, characterized in that, The flange parallelism measuring device also includes multiple indicator lights, each corresponding to one of the multiple first display screens. When the raw data displayed on one of the first display screens is at its maximum, the corresponding indicator light emits a light signal.

7. The flange parallelism measuring device according to claim 5, characterized in that, The display module also includes a second display screen connected to the control module, the second display screen being used to display the parallelism data.

8. The flange parallelism measuring device according to claim 7, characterized in that, The flange parallelism measuring device also includes an alarm connected to the control module, which is used to issue an alarm signal when the parallelism data is greater than a preset value.

9. The flange parallelism measuring device according to any one of claims 1-4, characterized in that, The flange parallelism measuring device further includes a setting module connected to the control module. The setting module includes a power button, a measurement button, a confirmation button, a delete button, and a numeric keypad. The power button is used to turn on the flange parallelism measuring device, the measurement button is used to control the rangefinder to perform distance measurement, and the numeric keypad, the delete button, and the confirmation button are used to set preset values.

10. A flange parallelism measurement system, characterized in that, The flange parallelism measurement system includes: a remote module and the flange parallelism measurement device according to any one of claims 1-9; The remote module is connected to the control module and is used to remotely control and set the parallelism measuring device.

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