Intelligent bolt monitoring device in high-temperature environment

Abstract

The utility model discloses an intelligent bolt monitoring device in a high-temperature environment, and the device comprises a measuring rod which is disposed in an axial hole of a bolt; the mounting bottom plate is fixedly mounted on the top surface of the screw rod; the heat insulation assembly comprises a heat insulation plate and a heat insulation measuring rod, the heat insulation plate is arranged on the mounting bottom plate, an axial through hole coaxial with the axial hole is formed in the heat insulation plate, the heat insulation measuring rod is mounted in the axial through hole of the heat insulation plate, and the lower end of the heat insulation measuring rod is fixedly connected with the upper end of the measuring rod; the fixing plate is arranged on the heat insulation plate; the displacement sensor is installed on the fixing plate, and a detection feeler lever of the displacement sensor penetrates through the fixing plate and then abuts against the upper end face of the heat insulation measuring rod. According to the utility model, the problem that the tightness of the high-temperature bolt cannot be clearly known in daily work is solved, and the on-site maintenance workload of personnel is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of screw monitoring equipment, in particular to an intelligent bolt monitoring device in a high-temperature environment. Background Art

[0002] Existing intelligent bolt monitoring devices consist of a measuring rod and a displacement sensor. The measuring rod is installed in the axial hole of the screw, and the displacement sensor is mounted on the top surface of the screw, with its sensing rod resting against the measuring rod. When the bolt is stretched, the measuring rod displaces due to the deformation of the bolt. The displacement sensor then measures the displacement of the measuring rod and calculates the bolt's preload force.

[0003] However, the existing intelligent bolt monitoring device is not suitable for monitoring bolts in high-temperature environments. This is because the displacement sensor is directly installed on the screw, and the high temperature on the screw surface will be transmitted to the displacement sensor, causing the components inside the displacement sensor to malfunction.

[0004] Therefore, the applicant has found a solution to the above-mentioned problem through beneficial exploration and research. The technical solution to be introduced below is produced in this context. Utility Model Content

[0005] The technical problem to be solved by the present invention is to provide an intelligent bolt monitoring device for a high temperature environment in view of the deficiencies of the existing technology, so as to solve the problem that the pre-tightening force of high temperature bolts cannot be monitored during daily operation.

[0006] The technical problem to be solved by the present invention can be achieved by adopting the following technical solutions:

[0007] An intelligent bolt monitoring device for high temperature environment, comprising:

[0008] A measuring rod, which is installed in the axial hole of the bolt and can be displaced following the extension of the screw;

[0009] a mounting base plate fixedly mounted on the top surface of the screw rod, wherein the upper end of the measuring rod passes through the mounting base plate;

[0010] At least one thermal insulation assembly, the thermal insulation assembly comprising a thermal insulation plate and a thermal insulation measuring rod, the thermal insulation plate being disposed on the mounting base plate and having an axial through hole therein coaxially arranged with the axial hole, the thermal insulation measuring rod being mounted in the axial through hole of the thermal insulation plate and having a lower end fixedly connected to an upper end of the measuring rod;

[0011] a fixing plate, the fixing plate being arranged on the heat insulation plate; and

[0012] A displacement sensor is mounted on the fixing plate and its detection feeler rod is closely attached to the upper end surface of the heat-insulating measuring rod after passing through the fixing plate.

[0013] In a preferred embodiment of the present invention, the thermal insulation components are divided into several groups and are arranged in a stacked manner between the mounting base plate and the fixed plate. The thermal insulation measuring rods in two adjacent thermal insulation components are fixedly connected. The lower end of the thermal insulation measuring rod in the thermal insulation component located in the bottom layer is fixedly connected to the upper end of the measuring rod, and the upper end of the thermal insulation measuring rod in the thermal insulation component located in the top layer is in contact with the detection feeler rod of the displacement sensor.

[0014] In a preferred embodiment of the present invention, the heat insulation board and the heat insulation measuring rod in each heat insulation assembly are made of the same material.

[0015] In a preferred embodiment of the present invention, the insulation plates in the uppermost insulation assembly are fixed to the fixing plate by a plurality of first fastening screws arranged at circumferential intervals, and the insulation plates in all the insulation assemblies are stacked and fixed to the mounting base plate by a plurality of second fastening screws arranged at circumferential intervals.

[0016] In a preferred embodiment of the present invention, a first mounting boss is formed on the plate surface of the mounting base facing the bolt, a first external thread is formed on the outer peripheral surface of the first mounting boss, a first mounting groove that cooperates with the first mounting boss is formed at the upper end of the axial hole of the bolt, and a first internal thread that cooperates with the first external thread is formed on the inner peripheral surface of the first mounting groove; during installation, the first mounting boss of the mounting base is threadedly inserted into the first mounting groove of the screw.

[0017] In a preferred embodiment of the present invention, a mounting through hole is formed on the plate surface of the fixing plate facing the displacement sensor, a second internal thread is formed in the mounting through hole, a second mounting boss is formed on the end surface of the displacement sensor facing the fixing plate, and a second external thread that cooperates with the second internal thread is formed on the outer peripheral surface of the second mounting boss; during installation, the second mounting boss of the displacement sensor is threadedly inserted into the mounting through hole of the fixing plate.

[0018] In a preferred embodiment of the present invention, the lower end of the measuring rod is fixedly connected to the bottom surface of the axial hole, and a certain gap is formed between the outer circumference of the measuring rod and the inner circumference of the axial hole.

[0019] In a preferred embodiment of the present invention, the displacement sensor is a wireless high-precision displacement sensor of model SEN920-LORA.

[0020] Due to the adoption of the above technical solution, the beneficial effect of the present invention is that: the present invention arranges a heat insulation component between the measuring rod and the displacement sensor, and reduces the temperature to a temperature at which the displacement sensor can work normally through the heat insulation component, thereby avoiding damage to the displacement sensor, and realizing the monitoring of the pre-tightening force of the high-temperature bolt, solving the problem of not being able to clearly understand the tightness of the high-temperature bolt during daily work, and reducing the on-site maintenance workload of personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 It is a front view of the present utility model.

[0023] Figure 2 It is a schematic diagram of the exploded structure of the present utility model.

[0024] Figure 3 yes Figure 1 PP cross-sectional view.

[0025] Figure 4 yes Figure 1 MM cross-sectional view.

[0026] Figure 5 yes Figure 3 A local enlarged schematic diagram of point A.

[0027] Figure 6 yes Figure 4 A partial enlarged schematic diagram of point B. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0029] Referring to the accompanying drawings, a high-temperature environment intelligent bolt monitoring device is shown, which includes a measuring rod 100, a mounting base plate 200, thermal insulation components 300a, 300b, a fixing plate 400 and a displacement sensor 500.

[0030] The measuring rod 100 is mounted within the axial hole 11 of the bolt 10 and is capable of moving in response to the extension of the screw 10. The lower end of the measuring rod 100 is fixedly connected to the bottom surface of the axial hole 11 by methods including, but not limited to, adhesive bonding, threaded connection, and interference fit. A clearance is provided between the outer circumference of the measuring rod 100 and the inner circumference of the axial hole 11 to facilitate movement of the measuring rod 100 in response to the screw 10.

[0031] The mounting base plate 200 is fixedly mounted on the top surface of the screw rod 10. A mounting boss 210 is formed on the surface of the mounting base plate 200 facing the bolt 10. An external thread 211 is formed on the outer circumference of the mounting boss 210. A mounting groove 12 is formed at the upper end of the axial hole 11 of the bolt 10 to cooperate with the mounting boss 210. An internal thread 12a is formed on the inner circumference of the mounting groove 12 to cooperate with the external thread 211. When the mounting base plate 200 is installed, the mounting boss 210 of the mounting base plate 200 is threadedly inserted into the mounting groove 12 of the screw rod 10, thereby securing the mounting base plate 200 to the screw rod 10. A base plate through-hole 220 is provided at the center of the mounting base plate 200, through which the upper end of the measuring rod 100 passes.

[0032] The thermal insulation assembly 300a includes a thermal insulation plate 310a and a thermal insulation measuring rod 320a. The thermal insulation plate 310a is arranged on the mounting base plate 200 and has an axial through hole 311a arranged coaxially with the axial hole 11. The thermal insulation measuring rod 320a is installed in the axial through hole 311a of the thermal insulation plate 310a and its lower end is fixedly connected to the upper end of the measuring rod 100. The fixing method can be a clamping method, such as a clamping method of a protrusion and a groove.

[0033] The thermal insulation assembly 300b includes a thermal insulation plate 310b and a thermal insulation measuring rod 320b. The thermal insulation plate 310b is arranged on the thermal insulation plate 310a in a stacked manner and has an axial through hole 311b coaxially arranged with the axial hole 11. The thermal insulation measuring rod 320b is installed in the axial through hole 311b of the thermal insulation plate 310b and its lower end is fixedly connected to the upper end of the thermal insulation measuring rod 320a. The fixing method can be a clamping method, such as a clamping method of a protrusion and a groove.

[0034] The fixing plate 400 is mounted on the insulation plate 310b of the insulation assembly 300b. The displacement sensor 500 is mounted on the fixing plate 400, with its sensing rod 510 protruding through the fixing plate 400 and resting against the upper end surface of the insulation measuring rod 320b. In this embodiment, the displacement sensor 500 is preferably a SEN920-LORA wireless high-precision displacement sensor, which wirelessly transmits collected data to a data collector.

[0035] The surface of the fixing plate 400 facing the displacement sensor 500 includes a mounting hole 410 with an internal thread 411 formed therein. A mounting boss 520 is formed on the end surface of the displacement sensor 500 facing the fixing plate 400. The outer circumference of the mounting boss 520 includes an external thread 521 that mates with the internal thread 411. During installation, the mounting boss 520 of the displacement sensor 500 is threadably inserted into the mounting hole 410 of the fixing plate 400, thereby securing the displacement sensor 500 to the fixing plate 400.

[0036] It should be noted that the number of thermal insulation assemblies is not limited to that in this embodiment; it should be provided based on thermal insulation requirements. At least one thermal insulation assembly may be provided, or multiple thermal insulation assemblies may be provided, and these assemblies are stacked and arranged between the mounting base 200 and the fixing plate 400. The thermal insulation measuring rods in two adjacent thermal insulation assemblies are fixedly connected. The lower end of the thermal insulation measuring rod in the lowest thermal insulation assembly is fixedly connected to the upper end of the measuring rod 100, while the upper end of the thermal insulation measuring rod 100 in the highest thermal insulation assembly contacts the detection feeler rod 510 of the displacement sensor 500.

[0037] In this embodiment, insulation board 310a and insulation measuring rod 320a in insulation assembly 300a are made of the same material, ensuring that the thermal expansion systems of insulation board 310a and insulation measuring rod 320a are consistent, effectively reducing errors. Similarly, insulation board 310b and insulation measuring rod 320b in insulation assembly 300b are made of the same material, ensuring that the thermal expansion systems of insulation board 310b and insulation measuring rod 320b are consistent, effectively reducing errors.

[0038] When the insulation components 300a and 300b are installed, the insulation plate 310b in the insulation component 300b located on the top layer is fixed to the fixing plate 400 by means of a number of circumferentially spaced fastening screws 330. After the insulation plates 310a and 310b in all the insulation components 300a and 300b are stacked, they are fixed to the installation base plate 200 by means of a number of circumferentially spaced fastening screws 340.

[0039] The present invention arranges heat insulation components 300a and 300b between the measuring rod 100 and the displacement sensor 500. The heat insulation components 300a and 300b reduce the temperature of the bolt surface to a temperature at which the displacement sensor 500 can work normally, thereby avoiding damage to the displacement sensor 500 caused by high temperature, and realizing monitoring of the pre-tightening force of the high-temperature bolt. This solves the problem of not being able to clearly understand the tightness of the high-temperature bolt during daily work, and reduces the maintenance workload of personnel on site.

[0040] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent bolt monitoring device for high temperature environment, characterized in that: include: A measuring rod, which is installed in the axial hole of the bolt and can be displaced following the extension of the screw; a mounting base plate fixedly mounted on the top surface of the screw rod, wherein the upper end of the measuring rod passes through the mounting base plate; At least one thermal insulation assembly, the thermal insulation assembly comprising a thermal insulation plate and a thermal insulation measuring rod, the thermal insulation plate being disposed on the mounting base plate and having an axial through hole therein coaxially arranged with the axial hole, the thermal insulation measuring rod being mounted in the axial through hole of the thermal insulation plate and having a lower end fixedly connected to an upper end of the measuring rod; a fixing plate, the fixing plate being arranged on the heat insulation plate; and A displacement sensor is mounted on the fixing plate and its detection feeler rod is closely attached to the upper end surface of the heat-insulating measuring rod after passing through the fixing plate.

2. The intelligent bolt monitoring device for high temperature environment according to claim 1, characterized in that: The thermal insulation components are divided into several groups and are arranged in a stacked manner between the mounting base plate and the fixed plate. The thermal insulation measuring rods in two adjacent thermal insulation components are fixedly connected. The lower end of the thermal insulation measuring rod in the thermal insulation component located in the bottom layer is fixedly connected to the upper end of the measuring rod, and the upper end of the thermal insulation measuring rod in the thermal insulation component located in the top layer is in contact with the detection feeler rod of the displacement sensor.

3. The intelligent bolt monitoring device for high temperature environment according to claim 2, characterized in that: The heat insulation board and the heat insulation measuring rod in each heat insulation component are made of the same material.

4. The intelligent bolt monitoring device for high temperature environment according to claim 3, characterized in that: The insulation plates in the uppermost insulation assembly are fixed to the fixing plate by a plurality of circumferentially spaced first fastening screws, and the insulation plates in all insulation assemblies are stacked and fixed to the mounting base plate by a plurality of circumferentially spaced second fastening screws.

5. The intelligent bolt monitoring device for high temperature environment according to any one of claims 1 to 4, characterized in that: A first mounting boss is formed on the plate surface of the mounting base facing the bolt, a first external thread is formed on the outer peripheral surface of the first mounting boss, a first mounting groove that cooperates with the first mounting boss is formed at the upper end of the axial hole of the bolt, and a first internal thread that cooperates with the first external thread is formed on the inner peripheral surface of the first mounting groove; during installation, the first mounting boss of the mounting base is threadedly inserted into the first mounting groove of the screw.

6. The intelligent bolt monitoring device for high temperature environment according to claim 5, characterized in that: A mounting through hole is formed on the plate surface of the fixing plate facing the displacement sensor, a second internal thread is formed in the mounting through hole, a second mounting boss is formed on the end surface of the displacement sensor facing the fixing plate, a second external thread that cooperates with the second internal thread is formed on the outer peripheral surface of the second mounting boss; during installation, the second mounting boss of the displacement sensor is threadedly installed into the mounting through hole of the fixing plate.

7. The intelligent bolt monitoring device for high temperature environment according to claim 1, characterized in that: The lower end of the measuring rod is fixedly connected to the bottom surface of the axial hole, and a certain gap is formed between the outer circumference of the measuring rod and the inner circumference of the axial hole.

8. The intelligent bolt monitoring device for high temperature environment according to claim 1, characterized in that: The displacement sensor is a wireless high-precision displacement sensor of model SEN920-LORA.

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