A device for measuring the loosening of flange bolt connections

Abstract

This utility model relates to the field of connection measurement technology and discloses a flange bolt connection loosening measurement device, including a first flange and a second flange. Placement grooves are formed on the outer wall of one end of the first and second flanges. The first and second flanges can be tightly installed by bolts and nuts. After installation, the measuring electrodes on both sides are brought into close contact, minimizing the resistance value. The resistance signal value can be displayed through connecting wires and a signal receiving and processing module. When the bolts and nuts become loose, the contact area between the measuring electrodes decreases, thus increasing the resistance value. By monitoring the resistance between the two measuring electrodes, an early quantitative assessment of the loosening state of the bolts and nuts can be made. Compared to more macroscopic measurement methods, this method can measure the loosening state of the bolts and nuts faster and earlier, thereby avoiding or reducing the probability of subsequent accidents.

Description

Technical Field

[0001] This utility model belongs to the field of connection measurement technology, specifically, it relates to a device for measuring the loosening of flange bolt connection structures. Background Technology

[0002] Flange bolt connections are widely used in many industrial sectors such as petroleum, chemical, power, and machinery. The tightness and reliability of these connections directly affect the safe and stable operation of equipment. Early loosening of bolts often begins with changes in the contact state at the microscopic level. As the loosening intensifies, it may lead to media leakage, increased equipment vibration, or even serious safety accidents.

[0003] In the existing technology, most methods for detecting bolt loosening are relatively macroscopic measurements. These macroscopic measurement methods cannot effectively measure and provide feedback in the early stages when the loosening is only slight, which may lead to subsequent safety accidents.

[0004] In view of this, this utility model is proposed. Utility Model Content

[0005] To address the problem that most existing methods for detecting bolt loosening rely on macroscopic measurements, which are ineffective in detecting and addressing early signs of loosening, potentially leading to subsequent safety incidents, this invention employs the following basic concept: A device for measuring the loosening of a flange bolt connection includes a first flange and a second flange. A placement groove is formed on the outer wall of one end of the first flange and the second flange. A gasket is placed on the inner wall of the placement groove. A measuring electrode is connected to the gasket relative to the outer wall of one end of the placement groove. A connecting wire is connected to the inner outer wall of the measuring electrode.

[0006] In a preferred embodiment of this utility model, a washer is provided on one side of the outer wall of the first flange and the second flange, and nuts and bolts are threadedly connected to the first flange and the second flange, with the washer located between the nuts and bolts.

[0007] In a preferred embodiment of this utility model, a signal receiving and processing module is connected to the end of the connecting wire away from the measuring electrode.

[0008] In a preferred embodiment of this utility model, the gasket is made of insulating rubber.

[0009] In a preferred embodiment of this utility model, the outer wall of the gasket is fitted to the inner wall of the placement groove.

[0010] Compared with the prior art, the present invention has the following advantages: This invention allows for the tight installation of a first flange and a second flange using bolts and nuts. After the first and second flanges are tightly installed, the measuring electrodes on both sides will come into close contact with each other, minimizing the resistance. The resistance signal value can be displayed by connecting wires and a signal receiving and processing module. When the bolts and nuts become loose, the contact area between the measuring electrodes decreases, thus increasing the resistance. By monitoring the resistance between the two measuring electrodes, early quantitative assessment of bolt and nut loosening can be achieved. Compared to more macroscopic measurement methods, this method can detect loosening of bolts and nuts faster and earlier, thereby avoiding or reducing the probability of subsequent accidents.

[0011] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0012] In the attached diagram: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the separation and explosion structure of this utility model; Figure 3 This is a schematic diagram of the partially separable structure of this utility model.

[0013] In the diagram: 1. First flange; 2. Second flange; 3. Gasket; 4. Nut; 5. Bolt; 6. Placement slot; 7. Gasket; 8. Measuring electrode; 9. Connecting wire; 10. Signal receiving and processing module. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0015] like Figures 1 to 3 As shown, a flange bolt connection loosening measuring device includes a first flange 1 and a second flange 2. A placement groove 6 is provided on the outer wall of one end of the first flange 1 and the second flange 2. A gasket 7 is placed and installed on the inner wall of the placement groove 6. A measuring electrode 8 is connected to the outer wall of one end of the gasket 7 relative to the placement groove 6. A connecting wire 9 is connected to the inner outer wall of the measuring electrode 8.

[0016] Furthermore, a washer 3 is provided on one side of the outer wall of the first flange 1 and the second flange 2, and a nut 4 and a bolt 5 are threadedly connected to the first flange 1 and the second flange 2, with the washer 3 located between the nut 4 and the bolt 5.

[0017] Furthermore, a signal receiving and processing module 10 is connected to the end of the connecting wire 9 away from the measuring electrode 8. The signal receiving and processing module 10 can process and display the resistance between the two measuring electrodes 8.

[0018] Furthermore, the gasket 7 is made of insulating rubber, and the outer wall of the gasket 7 fits snugly against the inner wall of the placement groove 6. By making the gasket 7 of insulating rubber, the installation stability between the first flange 1 and the second flange 2 can be improved during installation, and the current of the measuring electrode 8 can also be isolated.

[0019] The implementation principle of the flange bolt connection loosening measuring device in this embodiment is as follows: Before measurement, a pair of gaskets 7 are placed on the inner walls of the placement grooves 6 opened on the first flange 1 and the second flange 2 respectively. As the gaskets 7 are placed, the measuring electrodes 8 connected on one side are installed synchronously. After the gaskets 7 are placed, the outer walls of the first flange 1 and the second flange 2 are fitted together, and then the mounting through holes opened on their outer walls are aligned. Then, the installation is fastened by washers 3, nuts 4 and bolts 5. When the first flange 1 and the second flange 2 are connected... After the outer walls of both ends of flange 2 are fastened, they will fit tightly together. At the same time, the measuring electrodes 8 on the gaskets 7 on both sides will come into close contact with each other. When the first flange 1 and the second flange 2 are fastened together by bolts 5, the contact area pressure of the two flanges is at its maximum. At the same time, the contact area pressure of the measuring electrodes 8 on both sides is at its maximum. Thus, the resistance value between them will be at its minimum. At this time, the resistance signal displayed by the measuring electrodes 8 on both sides can be transmitted to the signal receiving and processing module 10 through the connecting wire 9, and then displayed by the signal receiving and processing module 10. When bolt 5 and nut 4 loosen, the contact surface between the first flange 1 and the second flange 2 will become loose. This will reduce the contact area pressure between the two flanges, resulting in fewer actual contact points between the two measuring electrodes 8. Consequently, the resistance value displayed by the two measuring electrodes 8 will increase. By monitoring and measuring the resistance between the two measuring electrodes 8, the early loosening state of bolt 5 and nut 4 can be quantitatively assessed in a timely manner. Compared with a more macroscopic measurement method, the loosening state between bolt 5 and nut 4 can be measured faster and earlier, thereby avoiding or reducing the probability of subsequent accidents.

Claims

1. A device for measuring the loosening of flange bolt connections, comprising a first flange (1) and a second flange (2), characterized in that, A placement groove (6) is provided on the outer wall of one end of the first flange (1) and the second flange (2). A gasket (7) is placed and installed on the inner wall of the placement groove (6). A measuring electrode (8) is connected to the outer wall of one end of the gasket (7) relative to the placement groove (6). A connecting wire (9) is connected to the inner outer wall of the measuring electrode (8).

2. The flange bolt connection loosening measuring device according to claim 1, characterized in that, A washer (3) is provided on one side of the outer wall of the first flange (1) and the second flange (2). Nuts (4) and bolts (5) are threadedly connected to the first flange (1) and the second flange (2). The washer (3) is located between the nut (4) and the bolt (5).

3. The flange bolt connection loosening measuring device according to claim 1, characterized in that, The end of the connecting wire (9) away from the measuring electrode (8) is connected to a signal receiving and processing module (10).

4. The flange bolt connection loosening measuring device according to claim 1, characterized in that, The gasket (7) is made of insulating rubber.

5. The flange bolt connection loosening measuring device according to claim 1, characterized in that, The outer wall of the gasket (7) fits snugly against the inner wall of the placement groove (6).

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