TWI794567B - Measuring device and manufacturing method thereof - Google Patents

Abstract

This invention provides a measuring device which bonds a strain member with a support through a bonding material so that when the support is set on a target, a strain of the target can be monitored and reflected in real time. Therefore, a failure time of the target can be simulated to monitor in real time whether a strain state of the target is close to the failure time.

Description

Measuring device and its manufacturing method

The invention provides a measuring device, especially a measuring device for measuring strain and a manufacturing method thereof.

Boilers in power plants are mainly used to generate steam and heat steam furnace tubes. The total length of the furnace tubes is more than 300 kilometers. The failure of the supporting furnace tube due to rupture will lead to the shutdown of the boiler, which will not only cause tens of millions of losses in the power plant, but also seriously affect the lives of the people and the safety of the power plant.

However, currently, the experience of field operators is used to judge the structural state of the furnace tube, so it is impossible to effectively monitor the structural state of the furnace tube in real time. Therefore, when the furnace tube breaks and affects the boiler, the site operator will find that the furnace tube has broken. damage.

Therefore, how to monitor the strain state of the furnace tube in real time to avoid the breakage of the furnace tube is a technical problem that needs to be solved urgently.

In view of the lack of the above-mentioned conventional technology, the present invention provides a measuring device, which includes: a support member, which is used to set on a target object located in a high-temperature and high-pressure environment; a bonding material; And a strain element is combined on a supporting element through the bonding material, so that the strain element can measure the strain state of the target object.

In the aforementioned measuring device, the strain gauge is a sheet.

In the aforementioned measuring device, the strain gauge is embedded in the bonding material.

In the aforementioned measuring device, the bonding material is a ceramic material.

In the aforementioned measuring device, the supporting member is hoop-shaped.

In the aforementioned measuring device, the support member is a constant force structure.

The aforementioned measurement device further includes a measurement host connected to the strain element in communication.

The present invention further provides a method for manufacturing a measuring device, which includes: providing a support; and bonding the strain element to the support through a bonding material, so that the support is set on a target in a high temperature and high pressure environment When the object is on, the strain gauge is used to measure the strain state of the object.

In the aforementioned manufacturing method, the strain gauge is a sheet body, and the bonding material is a ceramic material.

In the aforementioned manufacturing method, the strain gauge is embedded in the bonding material, and the manufacturing process includes: adhering the strain gauge to the support through a molten ceramic layer; cooling and solidifying the ceramic layer; connecting a plurality of wires to the support. a strain member; covering another molten ceramic layer on one end of the strain member and the plurality of electric wires; and cooling and solidifying the other ceramic layer so that the strain member is sandwiched between the two ceramic layers, and the two The ceramic layer is used as the bonding material, and the other ends of the plurality of electric wires are exposed to the bonding material.

It can be seen from the above that the measuring device of the present invention is mainly provided on the support by the strain member, so that the support is arranged on the target object in a high temperature and high pressure environment, and can monitor and reflect the strain in real time. The amount of strain of the target enables the measuring host to simulate the failure time point of the target, so that it can effectively and immediately monitor whether the strain state of the target is close to the failure time Therefore, the use of the measuring device of the present invention can effectively determine the structural state of the metal furnace tube of the boiler, so as to avoid the rupture of the furnace tube.

1‧‧‧Measuring device

10‧‧‧Strain parts

11‧‧‧Binder

110,111‧‧‧Ceramic layer

12‧‧‧Wire

12a, 12b‧‧‧end

13‧‧‧Measurement host

14‧‧‧Support

9‧‧‧Target

C‧‧‧Expiration time point

f‧‧‧strain direction

Figure 1 is a three-dimensional schematic view of the measuring device of the present invention.

Fig. 1' is a schematic plan view of the measuring device of the present invention.

Figures 2A to 2C are side cross-sectional schematic views of the manufacturing method of the measuring device of the present invention.

Fig. 3 is a graph simulated by the measuring device of the present invention.

The implementation of the present invention is described below through specific specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for the understanding and reading of those familiar with this technology, and are not used to limit the implementation of the present invention Therefore, it has no technical substantive meaning. Any modification of structure, change of proportional relationship or adjustment of size shall still fall within the scope of this invention without affecting the effect and purpose of the present invention. The technical content disclosed by the invention must be within the scope covered. At the same time, terms such as "above" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the present invention. Changes or adjustments of their relative relationships are not Substantial changes in technical content shall also be regarded as the scope of implementation of the present invention.

Figures 1 and 1' are perspective and plan views of the measuring device 1 of the present invention. As shown in Figures 1 and 1', the measuring device 1 includes a support 14, a bonding material 11 and a strain member 10.

The support member 14 is hoop-shaped, and it is used to be arranged on a target object 9. For example, when the measuring device 1 performs a strain measurement operation, the support member 14 can be wrapped around the target object 9 .

In this embodiment, the support member 14 is a constant force structure, so that when it is deformed, the force generated by it remains unchanged.

The strain gauge 10 is combined on the support 14 by the bonding material 11 , so that the strain gauge 10 can measure the strain state of the target 9 .

In this embodiment, the strain gauge 10 is a sheet body, and the bonding material 11 is a ceramic material, and the target object 9 is a metal (containing chromium, molybdenum or Other metal material) furnace tube or metal (containing chromium, molybdenum or other metal material) pipeline, which is located in a high temperature and high pressure environment, wherein, the thickness of the tube wall of the target object 9 is, for example, 6.5mm, and the target object 9 The diameter is, for example, 44.3 mm, and the ASME coefficient y of the object 9 is, for example, 0.7.

Furthermore, the strain member 10 is embedded in the bonding material 11. The method of manufacture is to first adhere the strain member 10 to the support member 14 through a molten ceramic layer 110 (as shown in FIG. 2A ), and then After the ceramic layer 110 is cooled and solidified, a plurality of electric wires 12 are connected to the strain member 10 (as shown in FIG. 2B ), and then another molten ceramic layer 111 is covered on one end of the strain member 10 and the electric wires 12 12a (as shown in Figure 2C), when the other ceramic layer 111 is cooled and solidified, the strain gauge 10 is sandwiched between the two ceramic layers 110, 111, and the two ceramic layers 110, 111 are used as the bonding material 11, so that The bonding material 11 is fixed on the supporting member 14 , and the other ends 12 b of the wires 12 are exposed to the bonding material 11 .

Furthermore, the measurement device 1 of the present invention further includes a measurement host 13, which is used to externally connect the other ends 12b of the electric wires 12 to a measurement host 13, so that the strain gauge 10 is connected to the measurement host13. Therefore, the present invention can facilitate the user to directly set the support 14 on the target 9 by first combining the strain member 10 on the support 14. When the target 9 generates strain (such as the first In the strain direction f) shown in the figure, the strain gauge 10 will generate strain together, and the strain gauge 10 will transmit the measured strain amount to the measuring host 13 for recording and monitoring, so that After data processing, the measuring host 13 can completely simulate a curve (as shown in Figure 3), which is the boiler in an actual power plant at a specific steam pressure (such as 17.4Mpa) and a specific temperature (which is greater than 450°C) , such as 550 ° C ~ 560 ° C), the real-time interpretation of the furnace tube material expansion and damage data under the condition of operation, wherein, the horizontal axis shown in Figure 3 is the failure time point calculated by the measurement host 13, as shown in The origin is 8:40 on April 8, 2019, and the failure time point C is 12:45 on May 1, 2019.

In summary, the measuring device 1 of the present invention is mainly provided on the support 14 (constant force structure) by the strain member 10, so that when the support 14 is arranged on the target 9, it can monitor And it reflects the amount of strain of the target object 9, so that the measuring host 13 can accurately simulate the failure time point C of the target object 9, so that it can effectively and instantly monitor whether the strain state of the target object 9 is close to the failure time point, Therefore, the use of the measuring device 1 of the present invention can effectively determine the structural state of the metal furnace tube of the boiler, so as to avoid furnace tube rupture accidents.

Therefore, the failure time point C of the furnace tube of the boiler in the environment can be grasped in real time, so that the furnace tube can be replaced or repaired in advance before it breaks and damaged, so as to avoid the furnace tube of the steam boiler in the power plant operating at high temperature for many years In addition, under high-pressure environment, the failure of the furnace tube due to rupture can be avoided, and the situation of forced shutdown of the boiler can be avoided. Therefore, it can not only avoid the loss of tens of millions of yuan in the power plant, but also stabilize the quality of life of the people and improve the efficiency of the power plant. safety.

The above-mentioned embodiments are used to illustrate the principles and effects of the present invention, but not to limit the present invention. Anyone who is familiar with this art can And under the category, the above-mentioned embodiment is modified. Therefore, the scope of protection of the rights of the present invention should be as described in the scope of patent application described later.

1‧‧‧Measuring device

10‧‧‧Strain parts

11‧‧‧Binder

12‧‧‧Wire

12a, 12b‧‧‧end

13‧‧‧Measurement host

14‧‧‧Support

9‧‧‧Target

f‧‧‧strain direction

Claims (8)

A measuring device, comprising: a support member for being arranged on a metal furnace tube in a boiler environment; a bonding material, which is a ceramic material; and a strain member, which is embedded in the bonding material and The bonding material is combined on the supporting piece, so that the strain piece can measure the strain state of the metal furnace tube. The measuring device as described in item 1 of the scope of the patent application, wherein the strain gauge is a sheet body. The measuring device as described in item 1 of the scope of the patent application, wherein the supporting member is in the shape of a hoop. The measuring device as described in item 1 of the scope of the patent application, wherein the support member is a constant force structure. The measurement device as described in item 1 of the scope of the patent application further includes a measurement host connected to the strain element by communication. A method for manufacturing a measuring device, comprising: providing a support; and embedding a strain gauge in a ceramic bonding material and bonding the support to the support through the bonding material, so that the support is placed in a boiler environment When the metal furnace tube in the middle is on, the strain gauge is used to measure the strain state of the metal furnace tube. The manufacturing method of the measuring device as described in item 6 of the scope of the patent application, wherein the strain gauge is a sheet body. The manufacturing method of the measuring device as described in item 6 of the scope of the patent application, wherein, the The process of combining the bonding material with the variable element includes: adhering the strain element to the support through a molten ceramic layer; cooling and solidifying the ceramic layer; connecting a plurality of wires to the strain element; covering another molten ceramic layer on the One of the ends of the strain gauge and the plurality of electric wires; and cooling and solidifying the other ceramic layer, so that the strain gauge is sandwiched between the two ceramic layers, and the two ceramic layers are used as the bonding material, so that the plurality of electric wires The other end is exposed to the bonding material.

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