Flange bolt loosening gap monitoring sensor

Abstract

The utility model provides a flange bolt loosening gap monitoring sensor, which is used for monitoring a gap between a first part and a second part of an object to be measured and comprises a main shell, a movable block, a displacement sensor, a limiting rod, a first connecting piece and a second connecting piece. The displacement sensor is fixedly arranged in the main shell, and a measuring rod of the displacement sensor penetrates through the main shell in a sliding mode and is connected with the movable block. One end of the limiting rod is fixedly connected with the main shell, and the other end slidably penetrates through the movable block and is connected with an end part. The main shell is preliminarily connected with the first component through the first connecting piece, the movable block is preliminarily connected with the second component through the second connecting piece, displacement debugging can be carried out by moving the movable block at the moment, and the outer side end face of the end head is flush with the side face of the movable block by pushing the movable block to move during debugging. The measuring rod is located at a zero position relative to the displacement sensor, and installation and debugging are convenient and efficient.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of sensor, especially a flange bolt loosening gap monitoring sensor. BACKGROUND

[0002] On many devices, the connection fastening between components is very important, but as the length of device use grows, the connection between some components in the device will loosen, and the loosening of component connection can easily cause a large accident, with high safety risk. Therefore, a corresponding sensor needs to be set to monitor the gap between components to know whether the components are loosened. For example, on a large fan device, the loosening of the connection between the fan tower drum flange and the blade flange can cause the stability of the fan tower base to decrease, threatening the operation safety of the entire wind turbine generator, and even causing the collapse of the fan tower base, resulting in a large economic loss and causing serious harm risk to the surrounding environment and personnel.

[0003] In the prior art, a displacement probe and an induction plate structure are used to monitor whether the tower drum bolt is loosened by monitoring the micro change of the fan tower drum flange and the blade flange surface. The induction plate and the L-shaped mounting plate are fixed by structural adhesive on the upper and lower surfaces of the flange contact surface, and the displacement probe penetrates the center of the L-shaped plate and is fixed by a nut. This displacement probe and induction plate structure is complex and inconvenient to install, and is difficult to debug, time-consuming and laborious.

[0004] Therefore, a low-cost, universal, and lightweight flange bolt loosening gap monitoring sensor is needed to solve the above technical problems. CONTENT OF THE UTILITY MODEL

[0005] The utility model provides a kind of flange bolt loosening gap monitoring sensor to solve the problem of complex and inconvenient installation of gap monitoring structure in prior art, and difficult to debug, time-consuming and laborious.

[0006] To solve the above technical problems, the technical scheme of the utility model is as follows: a flange bolt loosening gap monitoring sensor is used to monitor the gap between a first component and a second component of a measured object. The flange bolt loosening gap monitoring sensor comprises a main housing, a movable block, a displacement sensor, a first connecting piece, and a second connecting piece.

[0007] The displacement sensor is fixedly arranged in the main housing. The movable block is located on one side of the main housing. The measuring rod of the displacement sensor slides through the main housing and is connected to the movable block. The first connecting piece is arranged on one face of the main housing. The first connecting piece is connected to the first component. The second connecting piece is arranged on one face of the movable block. The second connecting piece is connected to the second component.

[0008] The limiting rod is arranged in parallel with the measuring rod, one end of the limiting rod is fixedly connected with the main shell, the other end of the limiting rod is slidably penetrated through the movable block and is connected with an end head, the outer diameter of the end head is larger than the outer diameter of the limiting rod, and an accommodating hole for accommodating the end head is arranged on the side surface of the movable block away from the main shell, and the axial depth of the accommodating hole is greater than the axial length of the end head.

[0009] In the utility model, the limiting rod is a plug screw, the limiting rod further includes a smooth rod section and a threaded section, the end head is a screw head, the end head and the threaded section are connected at two ends of the smooth rod section respectively, the outer diameter of the smooth rod section is greater than the outer diameter of the threaded section, the threaded section is threadedly connected with the main shell, and the end surface of the smooth rod section is in contact with the main shell to limit the depth of the threaded section screwing into the main shell.

[0010] In the utility model, the side surface of the main shell, on which the first connecting piece is arranged, and the side surface of the movable block, on which the second connecting piece is arranged, are oriented in the same direction and are coplanar.

[0011] In the utility model, the first connecting piece and the second connecting piece are both magnet blocks.

[0012] Optionally, the first connecting piece is embeddedly fixed on the side surface of the main shell, and the second connecting piece is embeddedly fixed on the side surface of the movable block.

[0013] Optionally, the flange bolt slackness monitoring sensor further includes a first shell sleeve and a second shell sleeve.

[0014] The first shell sleeve is arranged on one side of the main shell, one side of the first shell sleeve, away from the main shell, is provided with a first accommodating groove, and the first connecting piece is fixedly arranged in the first accommodating groove.

[0015] The second shell sleeve is arranged on one side of the movable block, one side of the second shell sleeve, away from the movable block, is provided with a second accommodating groove, and the second connecting piece is fixedly arranged in the second accommodating groove.

[0016] Further, one side of the first shell sleeve is integrally connected with a first threaded column, the first threaded column is threadedly connected with the main shell, one side of the second shell sleeve is integrally connected with a second threaded column, and the second threaded column is threadedly connected with the movable block.

[0017] In the utility model, when the first connecting piece is connected with the first component, the main shell and the first component are further connected through fastening glue, and when the second connecting piece is connected with the second component, the movable block and the second component are further connected through fastening glue.

[0018] When the first connecting piece is connected with the first component, the main shell is apart from the first component by a set distance, and the fastening glue is wrapped around the periphery of the first connecting piece;

[0019] When the second connecting piece is connected with the second component, the movable block is apart from the second component by a set distance, and the fastening glue is wrapped around the periphery of the second connecting piece.

[0020] In the utility model, the displacement sensor is high-precision linear conductive plastic potentiometer, the flange bolt looseness monitoring sensor still includes acquisition module and the connector that is electrically connected with acquisition module, the acquisition module is arranged in the main shell and is electrically connected with the displacement sensor, the connector is through setting in one side of the main shell.

[0021] Compared with the prior art, the flange bolt looseness monitoring sensor has the advantages that: the main shell of the flange bolt looseness monitoring sensor is preliminarily connected with the first component through the first connecting piece, and the movable block is preliminarily connected with the second component through the second connecting piece; at this time, the displacement can be adjusted by moving the movable block; when adjusting, the outer side end face of the end head part is flush with the side face of the movable block by moving the movable block, so that the measuring rod is located at the zero position relative to the displacement sensor; and the installation and adjustment are convenient and efficient.

[0022] In addition, after the main shell and the movable block are preliminarily fixed and the adjustment is completed, the main shell and the first component and the movable block and the second component are connected more tightly by the fastening glue; the connection is very stable, has high monitoring stability and precision, and has the characteristics of low cost, light weight and universality. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following briefly introduces the drawings needed to be used in the embodiments, and the drawings in the following description are only corresponding drawings of some embodiments of the utility model.

[0024] Figure 1 It is a structure schematic view of the preferred embodiment of the flange bolt looseness monitoring sensor of the utility model.

[0025] Figure 2 It is a schematic view showing the internal structure of the flange bolt looseness monitoring sensor of the utility model.

[0026] Figure 3 It is a structure schematic view of the first shell sleeve and the first connecting piece of the flange bolt looseness monitoring sensor of the utility model.

[0027] Figure 4The utility model discloses a local structure diagram of the movable block of the flange bolt looseness monitoring sensor. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be apparently and completely described in connection with the drawings in the embodiments of the utility model. Apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the utility model.

[0029] The direction terms mentioned in the utility model, for example, "up", "down", "front", "back", "left", "right", "inner", "outer", "side", "top" and "bottom" are only the orientation of the drawings, and the direction terms are used to explain and understand the utility model, not to limit the utility model.

[0030] The terms "first", "second" and the like in the utility model are only for the purpose of description, and cannot be understood as indicating or implying relative importance, and are not limited as the order.

[0031] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood broadly, for example, the connection can be detachable connection, or the connection of integral structure, can be mechanical connection, or electrical connection, can be direct connection, or indirect connection through intermediate medium, can be the communication inside two elements or the interaction relationship between two elements. For the person skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0032] The structure of the displacement probe and the induction plate in the prior art is that the induction plate and the L-shaped mounting plate are fixed through structural glue on the upper and lower surfaces of the flange contact surface respectively, and the displacement probe penetrates the center of the L-shaped plate and is fixed through a nut. The structure of the displacement probe and the induction plate is complex and inconvenient to install, and is difficult to debug, time-consuming and laborious.

[0033] The following is a preferred embodiment of a flange bolt looseness monitoring sensor provided by the utility model, which can solve the above technical problems.

[0034] Please refer to Figure 1 and Figure 2 In the drawings, similar structures are denoted by the same reference numerals.

[0035] The embodiment provides a flange bolt loosening gap monitoring sensor for monitoring a gap between a first component and a second component of a to-be-measured object. When the to-be-measured object is a connection between a fan tower flange and a blade flange, the two connected flanges are the first component and the second component respectively, and the flange bolt loosening gap monitoring sensor can be used for monitoring a flange face gap between the two connected flanges.

[0036] In the embodiment, the flange bolt loosening gap monitoring sensor comprises a main shell 11, a movable block 12, a displacement sensor 15, a first connecting piece 13 and a second connecting piece 14.

[0037] One side of the main shell 11 is detachably provided with a cover plate 111, and a sealing ring is arranged between the cover plate 111 and the main shell 11. The displacement sensor 15 is fixedly arranged in the main shell 11, the movable block 12 is located on one side of the main shell 11, and a measuring rod 151 of the displacement sensor 15 is slidably penetrated through the main shell 11 and connected with the movable block 12. The first connecting piece 13 is arranged on one side of the main shell 11, and the first connecting piece 13 is connected with the first component. The second connecting piece 14 is arranged on one side of the movable block 12, and the second connecting piece 14 is connected with the second component. When the movable block 12 moves relative to the main shell 11, the measuring rod 151 moves relative to the displacement sensor 15, so that the gap between the first component and the second component is monitored.

[0038] In the embodiment, the displacement sensor 15 can be a high-precision linear conductive plastic potentiometer. The first component and the second component do not have high-frequency displacement action, so that the high-precision linear conductive plastic potentiometer for contact measurement has little mechanical wear.

[0039] The displacement sensor 15 can be a high-precision linear conductive plastic potentiometer of a Minol LP series.

[0040] Please refer to Figure 2 and Figure 4 In the embodiment, the flange bolt loosening gap monitoring sensor further comprises a limiting rod 18 arranged in parallel with the measuring rod 151. One end of the limiting rod 18 is fixedly connected with the main shell 11, and the other end of the limiting rod 18 is slidably penetrated through the movable block 12 and connected with an end head 181.

[0041] The end head 181 has an outer diameter larger than that of the limiting rod 18. An accommodation hole 121 for accommodating the end head 181 is arranged on a side of the movable block 12 away from the main shell 11, and the end head 181 can limit the moving distance of the movable block 12 away from the main shell 11.

[0042] The axial depth of the accommodating hole 121 is greater than the axial length of the end head 181. The zero position of the displacement sensor 15 can be set by pushing the movable block 12 to make the outer side surface of the end head 181 flush with the side surface of the movable block 12, so that the side surface of the end head 181 and the side surface of the movable block 12 can be matched to realize the function of returning to the original position.

[0043] Please refer to Figure 4 Specifically, the limiting rod 18 is a plug screw. The limiting rod 18 further comprises a smooth rod segment 182 and a threaded segment 183. The end head 181 is a screw head. The end head 181 and the threaded segment 183 are respectively connected to the two ends of the smooth rod segment 182. The outer diameter of the smooth rod segment 182 is greater than the outer diameter of the threaded segment 183. The threaded segment 183 is threadedly connected with the main shell 11, so that the limiting rod 18 is fixedly connected with the main shell 11. The end surface of the smooth rod segment 182 is in contact with the main shell 11 to limit the depth of the threaded segment 183 screwed into the main shell.

[0044] It should be noted that the smooth rod segment 182 penetrates the through hole formed in the movable block 12. The inner diameter of the through hole is smaller than the inner diameter of the accommodating hole 121.

[0045] In the embodiment, the limiting rod 18 is arranged on both sides of the measuring rod.

[0046] The planes to be measured of the first component and the second component are generally flush and coplanar. Therefore, in the embodiment, the side surface of the main shell 11 on which the first connecting piece 13 is arranged faces the same direction as the side surface of the movable block 12 on which the second connecting piece 14 is arranged and is coplanar with the side surface of the movable block 12. Then, the same size of the first connecting piece 13 and the second connecting piece 14 are arranged on the main shell 11 and the movable block 12, so that the main shell 11 and the movable block 12 can be stably connected with the first component and the second component at the same time in the subsequent process.

[0047] In the embodiment, the first connecting piece 13 and the second connecting piece 14 are both magnet blocks. After the main shell 11 is preliminarily connected with the first component through the first connecting piece 13 and the movable block 12 is preliminarily connected with the second component through the second connecting piece 14, the position adjustment and displacement adjustment can be further performed by moving the main shell 11 and the movable block 12.

[0048] Optionally, the first connecting piece 13 can be embedded and fixed on the side surface of the main shell 11, and the second connecting piece 14 can be embedded and fixed on the side surface of the movable block 12.

[0049] Please refer to Figure 1 and Figure 3 Optionally, the flange bolt slackness monitoring sensor further comprises a first shell sleeve 16 and a second shell sleeve 17. The first shell sleeve 16 and the second shell sleeve 17 are the same in structure.

[0050] The first shell 16 is arranged on one side of the main shell 11, and the first shell 16 is provided with a first accommodating groove 161 on the side away from the main shell 11, and the first connecting piece 13 is fixedly arranged in the first accommodating groove 161.

[0051] The second shell 17 is arranged on one side of the movable block 12, and the second shell 17 is provided with a second accommodating groove on the side away from the movable block 12, and the second connecting piece 14 is fixedly arranged in the second accommodating groove.

[0052] Further, one side of the first shell 16 is integrally connected with a first threaded column 162, the first threaded column 162 is threadedly connected with the main shell 11, and one side of the second shell 17 is integrally connected with a second threaded column, the second threaded column is threadedly connected with the movable block 12. In this way, by rotating the first shell 16 and the second shell 17, the size of the first shell 16 protruding from the side of the main shell 11 can be adjusted, and the size of the second shell 17 protruding from the side of the movable block 12 can be adjusted, thereby improving the installation compatibility of the flange bolt looseness monitoring sensor for different installation environments.

[0053] In the embodiment, when the first connecting piece 13 is connected with the first component, the main shell 11 and the first component are further connected by the fastening glue, and when the second connecting piece 14 is connected with the second component, the movable block 12 and the second component are further connected by the fastening glue. The main shell 11 and the first component are further fastened and connected by the fastening glue, and the movable block 12 and the second component are further fastened and connected by the fastening glue, so that the overall installation connection is very stable, and the monitoring stability and precision of the flange bolt looseness monitoring sensor can be improved.

[0054] When the first connecting piece 13 is connected with the first component, the main shell 11 is spaced apart from the first component by a set distance, the fastening glue is wrapped around the periphery of the first connecting piece 13, and the fastening glue can be filled more between the main shell 11 and the first component, so that the connection effect is stronger.

[0055] When the second connecting piece 14 is connected with the second component, the movable block 12 is spaced apart from the second component by a set distance, the fastening glue is wrapped around the periphery of the second connecting piece 14, and the fastening glue can be filled more between the movable block 12 and the second component, so that the connection effect is stronger.

[0056] In the embodiment, the flange bolt looseness monitoring sensor further comprises a collecting module 1A and a connector 19 electrically connected with the collecting module 1A, the collecting module 1A is arranged in the main shell 11 and electrically connected with the displacement sensor 15, and the connector 19 is arranged on one side of the main shell 11 in a penetrating manner. The connector can be an M12 aviation waterproof connector.

[0057] The acquisition module 1A in the embodiment can be an acquisition module of model RS485, and the acquisition module 1A is built-in in the main shell 11, so that external wiring can be reduced and wiring structure can be simplified.

[0058] The working principle of the utility model is: when the flange bolt looseness monitoring sensor is installed, the installation surfaces on the first part and the second part are cleaned first, and the connection positions of the first connecting piece 13 and the second connecting piece 14 are determined. The magnetic attraction connection of the first connecting piece 13 and the first part is realized, so that the main shell 11 is preliminarily fixed and connected with the first part. The magnetic attraction connection of the second connecting piece 14 and the second part is realized, so that the movable block 12 is preliminarily connected with the second part.

[0059] Then, it is determined by visual observation whether the measurement direction of the main shell 11 and the movable block 12 is consistent with the gap to be monitored, and it is determined that the main shell 11 is reliably adsorbed on the installation surface of the first part. The movable block 12 is pushed to move, so that the outer side end surface of the end head part 181 is flush with the side surface of the movable block 12, and it is ensured that the outer side end surface of the end head part 181 and the side surface of the movable block 12 are in the same plane. At this time, the measurement rod relative displacement sensor 15 is located at the zero position (it should be noted that the zero position at this time is a physical zero position, and the zero position enables the measurement rod to have a moving space in two directions of forward and backward, and the zero position can be re-set on the software subsequently), and the measurement rod can move forward and backward within a certain range relative to the zero position, for example, a moving monitoring range of ±3mm, that is, a monitoring range of the gap change.

[0060] In addition, the acquisition module (for example, a standard RS485 acquisition module) or the PLC and the secondary instrument (the secondary instrument is a device for further processing the electrical or gas signals output by the primary instrument (such as a sensor) in the industrial automation system) need to be used to read the position at this moment, and then the zero position can be re-set on the software after the flange bolt looseness monitoring sensor is installed and connected.

[0061] After confirming that the zero position is correct, the fastening glue suitable for the temperature of the installation environment is selected, the glue bottle with a lengthened nozzle can be used, and the fastening glue is injected into the edge parts between the main shell 11 and the first part and around the edge parts between the movable block 12 and the second part, and especially the edge parts around the main shell 11 and the movable block 12 are completely covered.

[0062] After the fastening glue is solidified, whether the position feedback by the displacement sensor 15 is displayed at the zero position is checked through the terminal, and if there is an error, the zero position can be re-adjusted and set through the software again.

[0063] Finally, the connector 19 is connected with the acquisition station through the cable. It should be noted that the cable is laid along the edges of the first part and the second part, and it should be noted that the wiring position should not affect the placement of other parts or tools in the later period.

[0064] Thus, the installation process of the flange bolt looseness gap monitoring sensor of the preferred embodiment is completed.

[0065] The main shell of the flange bolt looseness gap monitoring sensor of the preferred embodiment is preliminarily connected with the first component through the first connecting member, and the movable block is preliminarily connected with the second component through the second connecting member, at this time, the displacement adjustment can be performed by moving the movable block, and during the adjustment, the outer end surface of the end head is leveled with the side surface of the movable block by moving the movable block, so that the measuring rod is located at the zero position relative to the displacement sensor, and the installation and adjustment are convenient and efficient.

[0066] In addition, after the main shell and the movable block are preliminarily fixed and the adjustment is completed, the main shell and the first component and the movable block and the second component are further connected by the fastening glue, and the connection is very stable, has high monitoring stability and precision, and has the characteristics of low cost, light weight and universality.

[0067] In summary, although the utility model has disclosed the above-mentioned preferred embodiment, the above-mentioned preferred embodiment is not used to limit the utility model, and the ordinary skilled in the art can make various changes and decorations without departing from the spirit and scope of the utility model, therefore, the protection scope of the utility model is subject to the scope defined by the claims.

Claims

1. A flange bolt loosening gap monitoring sensor, used to monitor the gap between a first component and a second component of an object to be measured, characterized in that, The flange bolt loosening clearance monitoring sensor comprises a main housing, a movable block, a displacement sensor, a limiting rod, a first connecting piece and a second connecting piece; The displacement sensor is fixedly arranged in the main housing, the movable block is located on one side of the main housing, a measuring rod of the displacement sensor is slidably penetrated through the main housing and connected with the movable block, the first connecting piece is arranged on one side of the main housing, the first connecting piece is connected with a first component, the second connecting piece is arranged on one side of the movable block, and the second connecting piece is connected with a second component; The limiting rod is arranged in parallel with the measuring rod, one end of the limiting rod is fixedly connected with the main housing, the other end of the limiting rod is slidably penetrated through the movable block and connected with an end head, the outer diameter of the end head is larger than the outer diameter of the limiting rod, and an accommodating hole for accommodating the end head is arranged on the side of the movable block away from the main housing, and the axial depth of the accommodating hole is greater than the axial length of the end head.

2. The flange bolt loosening gap monitoring sensor according to claim 1, characterized in that, The limiting rod is a plug screw, the limiting rod further comprises a smooth rod section and a threaded section, the end head is a screw head, the end head and the threaded section are respectively connected at two ends of the smooth rod section, the outer diameter of the smooth rod section is greater than the outer diameter of the threaded section, the threaded section is threadedly connected with the main housing, and the end surface of the smooth rod section is in contact with the main housing to limit the depth of the threaded section screwed into the main housing.

3. The flange bolt loosening gap monitoring sensor according to claim 1, characterized in that, The side of the main housing on which the first connecting piece is arranged and the side of the movable block on which the second connecting piece is arranged are oriented in the same direction and are coplanar.

4. The flange bolt loosening gap monitoring sensor according to claim 1, characterized in that, The first connecting piece and the second connecting piece are both magnet blocks.

5. The flange bolt loosening gap monitoring sensor according to claim 4, characterized in that The first connecting piece is inlaidly fixed on the side of the main housing, and the second connecting piece is inlaidly fixed on the side of the movable block.

6. The flange bolt loosening gap monitoring sensor according to claim 4, characterized in that, The flange bolt loosening clearance monitoring sensor further comprises a first shell sleeve and a second shell sleeve; The first shell sleeve is arranged on one side of the main housing, one side of the first shell sleeve away from the main housing is provided with a first accommodating groove, and the first connecting piece is fixedly arranged in the first accommodating groove; The second shell sleeve is arranged on one side of the movable block, one side of the second shell sleeve away from the movable block is provided with a second accommodating groove, and the second connecting piece is fixedly arranged in the second accommodating groove.

7. The flange bolt loosening gap monitoring sensor according to claim 6, characterized in that One side of the first shell sleeve is integrally connected with a first threaded column, the first threaded column is threadedly connected with the main housing, one side of the second shell sleeve is integrally connected with a second threaded column, and the second threaded column is threadedly connected with the movable block.

8. The flange bolt loosening clearance monitoring sensor according to claim 1, characterized by, When the first connecting piece is connected with the first component, the main housing and the first component are further connected through fastening glue, and when the second connecting piece is connected with the second component, the movable block and the second component are further connected through fastening glue.

9. The flange bolt loosening clearance monitoring sensor according to claim 8, characterized in that, When the first connecting piece is connected with the first component, the main housing and the first component are spaced apart by a set distance, and the fastening glue is wrapped around the periphery of the first connecting piece; When the second connecting piece is connected with the second component, the movable block and the second component are spaced apart by a set distance, and the fastening glue is wrapped around the periphery of the second connecting piece.

10. The flange bolt loosening clearance monitoring sensor according to claim 1, characterized by, The displacement sensor is a linear conductive plastic potentiometer, and the flange bolt looseness gap monitoring sensor further comprises an acquisition module and a connector electrically connected with the acquisition module; the acquisition module is arranged in the main housing and electrically connected with the displacement sensor; and the connector is arranged through one side of the main housing.

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