A stress detection device for pipe support hanger of thermal power plant

Abstract

The utility model relates to mechanics detection technical field discloses a kind of pipeline support hanger stress detection devices of thermal power plant, including the upper support hanger of sleeve joint in the outside of pipeline, the upper support hanger upper end is provided with support rod, the lower side of pipeline is located in the lower sleeve joint of upper support hanger and has lower support hanger, and the lower end of lower support hanger is pasted with several stress detection pieces that enclose a circle;Upper support hanger and lower support hanger outside sleeve joint have stress detection ring, the inner diameter size of stress detection ring is greater than pipeline, and gap is left between the two;Gap is provided with several stress detectors;Lower support hanger is located between the stress detection piece that encloses a circle and is provided with blind hole;When using, pipeline is heated and expands and generates thermal stress, and stress detector 7 installed on stress detection ring senses thermal stress and transmits data to stress detection acquisition instrument, blind hole releases hole peripheral residual stress, and the strain released is measured by stress detection piece pasted in hole peripheral, that is, the original residual stress can be deduced.

Description

Technical Field

[0001] This utility model relates to the field of mechanical testing technology, specifically to a stress testing device for pipeline supports and hangers in thermal power plants. Background Technology

[0002] Pipe supports and hangers in thermal power plants are an important component of steam piping systems and play a vital role in ensuring the safe operation of these systems.

[0003] Stress testing devices for pipe supports in thermal power plants are specialized equipment used to detect the magnitude, distribution, and changes of stress in pipelines during operation. Their core function is to assess the structural safety of pipe supports and ensure the stable operation of the pipeline system. However, currently, most thermal power plants use pipe support stress testing devices that require the supports to be removed for testing, or technicians to climb to a high place to install the testing device on the supports for testing, which is cumbersome and inconvenient. Utility Model Content

[0004] (I) Technical Issues

[0005] The technical problem to be solved by this utility model is to overcome the above-mentioned technical difficulties and provide a stress detection device for pipeline supports and hangers in thermal power plants, which can effectively solve the problem of inconvenient detection of pipeline supports and hangers in thermal power plants.

[0006] (II) Technical Solution

[0007] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0008] A stress detection device for pipe supports and hangers in a thermal power plant includes an upper support and hanger sleeved on the outside of the pipe, a support rod provided at the upper end of the upper support and hanger, and a lower support and hanger sleeved on the outside of the pipe below the upper support and hanger.

[0009] The lower end of the lower support is covered with several stress testing plates arranged in a circle, and blind holes are provided between the stress testing plates arranged in a circle on the lower support.

[0010] Stress detection rings are fitted onto the outer sides of the upper and lower supports. One end of the stress detection ring protrudes from the upper and lower supports. The inner diameter of the stress detection ring is larger than that of the pipe, and there is a gap between them. Several stress detectors are installed in the gap.

[0011] As an improvement: the stress detector is fixed by a bolt hole reserved inside the stress detection ring, and one end of the stress detector is in contact with the surface of the pipe.

[0012] As an improvement, two stress detectors are provided, and they are located at the middle positions of the upper and lower inner walls of the stress detection ring, respectively.

[0013] As an improvement: both sides of the upper and lower support brackets are provided with a fixing plate, and the fixing plates on both sides are provided with through holes.

[0014] As an improvement: the stress detection ring has two integrally formed fixing plates on both sides, and the two fixing plates on both sides are provided with through holes corresponding to the through holes.

[0015] As an improvement: bolts are inserted into the through holes one and two to fix them to the outside of the pipe.

[0016] (III) Technical Effects

[0017] The advantages of this utility model compared with the prior art are as follows:

[0018] This invention features a stress detector installed between the support and the pipe, and a stress detection plate attached to the surface of the support. It can detect not only the thermal stress on the support caused by the thermal expansion of the pipe, but also the residual stress of the support itself. The stress detector and the detection plate transmit the detected data to a stress detection and acquisition instrument used in conjunction with them, making it convenient to use. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the structure of this utility model. Figure 1 .

[0021] Figure 3 This is a schematic diagram of the lower support bracket structure of this utility model.

[0022] Figure 4 This is a schematic diagram of the upper support bracket structure of this utility model.

[0023] As shown in the figure: 1. Pipe; 2. Upper support hanger; 3. Support rod; 4. Lower support hanger; 5. Stress testing ring; 6. Gap; 7. Stress detector; 8. Blind hole; 9. Fixing plate one; 10. Through hole one; 11. Fixing plate two; 12. Through hole two; 13. Bolt; 14. Stress testing plate. Detailed Implementation

[0024] In the description of this utility model, it should be understood that the terms "center," "lateral," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model 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 utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Additionally, the term "comprising" and any variations thereof are intended to cover non-exclusive inclusion.

[0025] The present invention will now be described in further detail with reference to the accompanying drawings.

[0026] A stress detection device for pipe supports and hangers in thermal power plants, as shown in the instruction manual. Figure 1 , 3 As shown in Figure 4: It includes an upper support 2 sleeved on the outside of the pipe 1, and a lower support 4 sleeved below the upper support 2 on the outside of the pipe 1. Both sides of the upper support 2 and the lower support 4 are provided with fixing plates 9, and through holes 10 are provided on the fixing plates 9. The upper end of the upper support 2 is provided with a support rod 3, and the lower end of the lower support 4 is attached with several stress detection plates 14 arranged in a circle. Blind holes 8 are provided between the stress detection plates 14 arranged in a circle on the lower support 4. The diameter of the blind holes 8 is 1-3mm. The residual stress of the support itself can be measured by the blind hole method.

[0027] As per the instruction manual Figure 1 , 2 As shown in Figure 3: Stress detection rings 5 ​​are sleeved on the outer sides of the upper support 2 and the lower support 4. One end of the stress detection ring 5 protrudes from the upper support 2 and the lower support 4. The inner diameter of the stress detection ring 5 is larger than that of the pipe 1, and a gap 6 is left between them. Several stress detectors 7 are installed in the gap 6. Existing technology such as VW-3000 vibrating wire strain gauges are used. Two stress detectors 7 are installed, and they are located in the middle of the upper and lower inner walls of the stress detection ring 5, respectively. The stress detectors 7 are fixed through bolt holes reserved on the inner side of the stress detection ring 5. One end of the stress detector 7 is in contact with the surface of the pipe 1. Fixing plates 2 11 are integrally formed on both sides of the stress detection ring 5. Through holes 2 12 corresponding to through holes 10 are provided on the fixing plates 2 11 on both sides. Bolts 13 are inserted into through holes 10 and through holes 2 12 to fix them to the outside of the pipe 1.

[0028] In the specific implementation of this embodiment:

[0029] During use, the pipe 1 expands due to heat, generating thermal stress. The stress detector 7 installed on the stress detection ring 5 senses the thermal stress and transmits data to the stress detection and acquisition instrument. The blind hole 8 releases the residual stress around the hole. By measuring the released strain through the stress detection piece attached to the hole, the original residual stress can be inferred.

[0030] The parts not disclosed in this utility model are all prior art, and their specific structures and working principles will not be described in detail.

[0031] Unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0032] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A stress detection device for pipe supports in a thermal power plant, comprising an upper support (2) sleeved on the outside of a pipe (1), a support rod (3) provided at the upper end of the upper support (2), and a lower support (4) sleeved on the outside of the pipe (1) below the upper support (2), characterized in that: The lower end of the lower support (4) is attached with several stress testing plates (14) arranged in a circle, and blind holes (8) are provided between the stress testing plates (14) arranged in a circle in the lower support (4). Stress detection rings (5) are fitted on the outer sides of the upper support (2) and the lower support (4). One end of the stress detection ring (5) protrudes from the upper support (2) and the lower support (4). The inner diameter of the stress detection ring (5) is larger than that of the pipe (1). A gap (6) is left between the two. Several stress detectors (7) are installed in the gap (6).

2. The stress detection device for pipeline supports and hangers in a thermal power plant according to claim 1, characterized in that: The stress detector (7) is fixed by a bolt hole reserved inside the stress detection ring (5), and one end of the stress detector (7) is in contact with the surface of the pipe (1).

3. The stress detection device for pipeline supports and hangers in a thermal power plant according to claim 2, characterized in that: Two stress detectors (7) are provided, and they are located at the middle positions of the upper and lower inner walls of the stress detection ring (5).

4. The stress detection device for pipeline supports and hangers in a thermal power plant according to claim 1, characterized in that: Both sides of the upper support bracket (2) and the lower support bracket (4) are provided with fixing plates (9), and through holes (10) are provided on the fixing plates (9) on both sides.

5. The stress detection device for pipeline supports and hangers in a thermal power plant according to claim 4, characterized in that: The stress detection ring (5) has two integrally formed fixing plates (11) on both sides, and the two fixing plates (11) on both sides are provided with through holes (12) corresponding to the through holes (10).

6. The stress detection device for pipeline supports and hangers in a thermal power plant according to claim 5, characterized in that: Bolts (13) are inserted into the first through hole (10) and the second through hole (12) to fix them to the outside of the pipe (1).

Images