CN204154238U - A kind of device detecting pipeline scaling thickness - Google Patents
A kind of device detecting pipeline scaling thickness Download PDFInfo
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- CN204154238U CN204154238U CN201420563184.8U CN201420563184U CN204154238U CN 204154238 U CN204154238 U CN 204154238U CN 201420563184 U CN201420563184 U CN 201420563184U CN 204154238 U CN204154238 U CN 204154238U
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Abstract
本实用新型涉及一种检测管线结垢厚度的装置，包括检测管、检测杆和阀门，检测杆一端位于检测管内，另一端位于检测管外，所述检测杆位于检测管内的一端上设置有刻度，且在端头设置有弧面接触头，检测管为密封的管体，阀门设置在检测管的管头处。通过本实用新型的使用能够适时准确的测出管线内结垢的厚度，为工人提供准确有效的参考。
The utility model relates to a device for detecting the fouling thickness of pipelines, which comprises a detection tube, a detection rod and a valve. One end of the detection rod is located in the detection tube, and the other end is located outside the detection tube. The end of the detection rod located in the detection tube is provided with a scale , and an arc-shaped contact head is arranged at the end, the detection tube is a sealed tube body, and the valve is arranged at the head of the detection tube. Through the use of the utility model, the scale thickness in the pipeline can be timely and accurately measured, and accurate and effective reference can be provided for workers.
Description
技术领域 technical field
本实用新型涉及一种石油化工领域中排污管的检测装置，尤其涉及一种检测排污管中结垢厚度的装置。 The utility model relates to a detection device for sewage pipes in the field of petrochemical industry, in particular to a device for detecting the scale thickness in the sewage pipes. the
背景技术 Background technique
在石油化工领域中，需要将多余的污水排走。此时就会用到排污管线。由于排污管线的用途，长期使用后，在排污管线的内部会结出一层厚厚的水垢，由于水垢的形成，管线的内径就会越来越小，排出污水的流量也会随之减小。在水垢厚度达到一定程度后，会严重影响管线的排污能力，需要更换相应的管线。 In the field of petrochemical industry, excess sewage needs to be drained away. This is where the blowdown line is used. Due to the purpose of the sewage pipeline, after long-term use, a thick layer of scale will form inside the sewage pipeline. Due to the formation of scale, the inner diameter of the pipeline will become smaller and smaller, and the flow of sewage will also decrease. . When the scale thickness reaches a certain level, it will seriously affect the sewage discharge capacity of the pipeline, and the corresponding pipeline needs to be replaced. the
而要更换管线就需要知道管线结垢厚度，通过结垢厚度，工人才能确定是否更换管线。目前，为了知道管线的结构厚度，不得关掉污水阀，然后用切割机切开管线后用刻度尺测出管线内水垢的厚度。这种操作方式存在着如下缺陷： To replace the pipeline, it is necessary to know the scale thickness of the pipeline. Only through the scale thickness can workers determine whether to replace the pipeline. At present, in order to know the structural thickness of the pipeline, the sewage valve must not be turned off, and then the pipeline is cut with a cutting machine and the thickness of scale in the pipeline is measured with a scale. This method of operation has the following defects:
1、由于需要切开管线，工人劳动量大，需要专门的切割工具，操作成本较高。 1. Due to the need to cut the pipeline, the labor load of the workers is large, special cutting tools are required, and the operation cost is high.
2、将管线切割开，就会破坏管线，更换新的管线，更换成本较高。 2. Cutting the pipeline will destroy the pipeline and replace it with a new pipeline, which will cost a lot. the
3、需要将污水阀关闭，要断水操作，耽误抽油工作的正常进行，浪费了工作时间。 3. It is necessary to close the sewage valve and operate without water, which delays the normal operation of the oil pumping work and wastes working time. the
实用新型内容 Utility model content
为了克服现有操作方式的缺陷，本实用新型提供了一种检测管线结垢厚度的装置，该装置安装在管线上，能够适时准确的测出管线内结垢的厚度，为工人提供准确有效的参考。 In order to overcome the defects of the existing operation mode, the utility model provides a device for detecting the thickness of pipeline scaling. refer to. the
为了解决上述技术问题，本实用新型采用的技术方案是： In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:
一种检测管线结垢厚度的装置，其特征在于：包括检测管、检测杆和阀门，检测杆一端位于检测管内，另一端位于检测管外，所述检测杆位于检测管内的一端上设置有刻度，且在端头设置有弧面接触头，检测管为密封的管体，阀门设置在检测管的管头处。 A device for detecting the thickness of pipeline fouling, characterized in that it includes a detection tube, a detection rod and a valve, one end of the detection rod is located in the detection tube, the other end is located outside the detection tube, and the end of the detection rod located in the detection tube is provided with a scale , and an arc-shaped contact head is arranged at the end, the detection tube is a sealed tube body, and the valve is arranged at the head of the detection tube.
所述检测管上设置有泄压孔，泄压孔用橡胶塞密封。 The detection tube is provided with a pressure relief hole, and the pressure relief hole is sealed with a rubber plug. the
所述检测管的管尾处设置有密封圈。 A sealing ring is provided at the end of the detection tube. the
所述检测杆位于检测管外的一端设置有把手。 A handle is provided at one end of the detection rod outside the detection tube. the
所述检测管的尾部设置有内螺纹，所述检测杆上设置有外螺纹，检测杆通过内外螺纹旋接在检测管内。 The tail of the detection tube is provided with an internal thread, the detection rod is provided with an external thread, and the detection rod is screwed into the detection tube through the internal and external threads. the
本实用新型具有以下优点： The utility model has the following advantages:
1、本实用新型包括检测管、检测杆和阀门，检测杆一端位于检测管内，另一端位于检测管外，所述检测杆位于检测管内的一端上设置有刻度，且在端头设置有弧面接触头，检测管为密封的管体，阀门设置在检测管的管头处。在使用本实用新型时，将本实用新型安装在管线上，当需要检测管线内水垢的厚度时，打开阀门，将检测杆推入到管线中，一直到弧面接触头与管线内壁接触，通过读出为结垢时的数值和结垢后测得的数值，两者之间的差值就是水垢的厚度。这样工人根据检测杆上的刻度值就能准确的知道水垢的厚度，为工人确定是否更换管线提供参考。这样也就不需要截断管线来检测水垢厚度，缩短了检测时间和检测成本，同时也降低了工人的劳动强度。带刻度的检测杆的作用，通过不同时期检测排污管线结垢厚度的变化值可计算在该时段内管线结垢厚度。 1. The utility model includes a detection tube, a detection rod and a valve. One end of the detection rod is located in the detection tube, and the other end is located outside the detection tube. The contact and the detection tube are sealed pipe bodies, and the valve is arranged at the head of the detection tube. When using the utility model, install the utility model on the pipeline. When it is necessary to detect the thickness of scale in the pipeline, open the valve, push the detection rod into the pipeline until the arc surface contact head contacts the inner wall of the pipeline, and pass The readout is the value during scaling and the value measured after scaling, and the difference between the two is the thickness of scale. In this way, the worker can accurately know the thickness of the scale according to the scale value on the detection rod, and provide a reference for the worker to determine whether to replace the pipeline. In this way, there is no need to cut off the pipeline to detect the scale thickness, which shortens the detection time and cost, and also reduces the labor intensity of workers. The function of the detection rod with scale can calculate the fouling thickness of the pipeline in this period by detecting the change value of the fouling thickness of the sewage pipeline in different periods.
2、本实用新型检测管上设置有泄压孔，泄压孔用橡胶塞密封，设置泄压口的作用在于：当排污管线结垢厚度检测结束关闭球阀后泄除装置中的压力，确保操作安全。 2. There is a pressure relief hole on the detection tube of the utility model, and the pressure relief hole is sealed with a rubber plug. The function of setting the pressure relief port is to release the pressure in the device after closing the ball valve after the fouling thickness detection of the sewage pipeline is completed, so as to ensure the operation. Safety. the
3、本实用新型检测管的管尾处设置有密封圈，其作用在于：当检测杆下放至充满地层水的排污管线时，确保水不能通过该检测装置返喷，保证操作人员安全。 3. A sealing ring is provided at the end of the detection tube of the utility model, and its function is to ensure that when the detection rod is lowered to the sewage pipeline full of formation water, water cannot be sprayed back through the detection device to ensure the safety of operators. the
4、本实用新型检测杆位于检测管外的一端设置有把手，设置把手的作用是便于工人操作，省事省力的将检测杆深入到管线中检测水垢的厚度。 4. The detection rod of the utility model is provided with a handle at one end outside the detection tube. The function of setting the handle is to facilitate the operation of the workers, save trouble and effort to penetrate the detection rod into the pipeline to detect the thickness of scale. the
5、本实用新型检测管的尾部设置有内螺纹，所述检测杆上设置有外螺纹，检测杆通过内外螺纹旋接在检测管内。这样结构的设置一是能增加检测管与检测杆之间的密封性，同时还有助于工人将检测杆深入到管线中，通过旋转检测杆就能轻松的将检测杆旋如到管线中。 5. The tail of the detection tube of the utility model is provided with an internal thread, and the detection rod is provided with an external thread, and the detection rod is screwed into the detection tube through the internal and external threads. The setting of such a structure can increase the sealing between the detection tube and the detection rod, and at the same time help the worker to penetrate the detection rod into the pipeline, and the detection rod can be easily screwed into the pipeline by rotating the detection rod. the
附图说明 Description of drawings
图1为本实用新型整体结构示意图。 Figure 1 is a schematic diagram of the overall structure of the utility model. the
图中标记 1、检测杆，2、密封圈，3、泄压孔，4、弧面接触头，5、阀门，6、管线，7、检测管，8、把手。 The marks in the figure are 1. Detection rod, 2. Sealing ring, 3. Pressure relief hole, 4. Arc surface contact head, 5. Valve, 6. Pipeline, 7. Detection tube, 8. Handle. the
具体实施方式 Detailed ways
本实用新型的主要用途是为了适时准确的检测出管线内水垢的结垢厚度。便于工人操作，避免切割管线，破坏管线而设计的。 The main purpose of the utility model is to timely and accurately detect the scaling thickness of the scale in the pipeline. It is designed to be easy for workers to operate and avoid cutting and damaging pipelines. the
本实用新型的主要设计点在于：通过一个检测杆来检测管线内水垢的厚度。 The main design point of the utility model is to detect the thickness of scale in the pipeline through a detection rod. the
具体来说： Specifically:
如图1所示，本实用新型包括检测管7、检测杆1和阀门5，检测杆1一端位于检测管7内，另一端位于检测管7外，所述检测杆1位于检测管7内的一端上设置有刻度，且在端头设置有弧面接触头4，检测管7为密封的管体，阀门5设置在检测管7的管头处。在使用本实用新型时，将本实用新型安装在管线6上，当需要检测管线内水垢的厚度时，打开阀门，将检测杆推入到管线中，一直到弧面接触头与管线内壁接触，通过读出为结垢时的数值和结垢后测得的数值，两者之间的差值就是水垢的厚度。这样工人根据检测杆上的刻度值就能准确的知道水垢的厚度，为工人确定是否更换管线提供参考。这样也就不需要截断管线来检测水垢厚度，缩短了检测时间和检测成本，同时也降低了工人的劳动强度。带刻度的检测杆的作用，通过不同时期检测排污管线结垢厚度的变化值可计算在该时段内管线结垢厚度。 As shown in Figure 1, the utility model comprises a detection tube 7, a detection rod 1 and a valve 5, one end of the detection rod 1 is located in the detection tube 7, and the other end is located outside the detection tube 7, and the detection rod 1 is located in the detection tube 7. One end is provided with a scale, and an arc contact head 4 is provided at the end, the detection tube 7 is a sealed tube body, and the valve 5 is arranged at the tube head of the detection tube 7 . When using the utility model, the utility model is installed on the pipeline 6. When the thickness of scale in the pipeline needs to be detected, the valve is opened, and the detection rod is pushed into the pipeline until the arc surface contact head contacts the inner wall of the pipeline. By reading the value when scaling and the value measured after scaling, the difference between the two is the thickness of scale. In this way, the worker can accurately know the thickness of the scale according to the scale value on the detection rod, and provide a reference for the worker to determine whether to replace the pipeline. In this way, there is no need to cut off the pipeline to detect the scale thickness, which shortens the detection time and cost, and also reduces the labor intensity of workers. The function of the detection rod with scale can calculate the fouling thickness of the pipeline in this period by detecting the change value of the fouling thickness of the sewage pipeline in different periods.
本实用新型检测管7上设置有泄压孔3，泄压孔3用橡胶塞密封，设置泄压口的作用在于：当排污管线结垢厚度检测结束关闭球阀后泄除装置中的压力，确保操作安全。 The detection pipe 7 of the utility model is provided with a pressure relief hole 3, and the pressure relief hole 3 is sealed with a rubber plug. Safe to operate. the
本实用新型检测管7的管尾处设置有密封圈2，其作用在于：当检测杆下放至充满地层水的排污管线时，确保水不能通过该检测装置返喷，保证操作人员安全。 The pipe end of the detection pipe 7 of the utility model is provided with a seal ring 2, and its function is: when the detection rod is lowered to the sewage pipeline full of formation water, it is ensured that water cannot be sprayed back through the detection device to ensure the safety of operators. the
本实用新型检测杆1位于检测管7外的一端设置有把手8，设置把手的作用是便于工人操作，省事省力的将检测杆深入到管线中检测水垢的厚度。 The detection rod 1 of the utility model is provided with a handle 8 at one end outside the detection tube 7. The effect of the handle is to facilitate the operation of the workers, and the detection rod can be penetrated into the pipeline to detect the thickness of scale in a convenient and labor-saving manner. the
本实用新型检测管7的尾部设置有内螺纹，所述检测杆1上设置有外螺纹，检测杆通过内外螺纹旋接在检测管7内。这样结构的设置一是能增加检测管与检测杆之间的密封性，同时还有助于工人将检测杆深入到管线中，通过旋转检测杆就能轻松的将检测杆旋如到管线中。 The tail of the detection tube 7 of the utility model is provided with an internal thread, and the detection rod 1 is provided with an external thread, and the detection rod is screwed into the detection tube 7 through the internal and external threads. The setting of such a structure can increase the sealing between the detection tube and the detection rod, and at the same time help the worker to penetrate the detection rod into the pipeline, and the detection rod can be easily screwed into the pipeline by rotating the detection rod. the
实施例1 Example 1
本实施例包括检测管7、检测杆1和阀门5，检测杆1一端位于检测管7内，另一端位于检测管7外，所述检测杆1位于检测管7内的一端上设置有刻度，且在端头设置有弧面接触头4，检测管7为密封的管体，阀门5设置在检测管7的管头处，阀门5为球阀。 This embodiment includes a detection tube 7, a detection rod 1 and a valve 5. One end of the detection rod 1 is located in the detection tube 7, and the other end is located outside the detection tube 7. The end of the detection rod 1 located in the detection tube 7 is provided with a scale. And the arc contact head 4 is arranged at the end, the detection pipe 7 is a sealed pipe body, the valve 5 is arranged at the pipe head of the detection pipe 7, and the valve 5 is a ball valve.
弧面接触头作用，保证检测杆与排污管线接触为面接触而不是点接触，减少测量误差。 The function of the arc surface contact head ensures that the contact between the detection rod and the sewage pipeline is a surface contact rather than a point contact, reducing measurement errors. the
球阀的作用，在检测时打开球阀，让检测杆下放至排污管线内进行检测，检测结束后上提检测杆，关闭球阀，确保检测装置内为常压、无水状态，确保安全。 The function of the ball valve is to open the ball valve during detection, lower the detection rod into the sewage pipeline for detection, lift the detection rod after the detection, and close the ball valve to ensure that the detection device is in a normal pressure and anhydrous state to ensure safety. the
实施例2 Example 2
本实施例包括检测管7、检测杆1和阀门5，检测杆1一端位于检测管7内，另一端位于检测管7外，所述检测杆1位于检测管7内的一端上设置有刻度，且在端头设置有弧面接触头4，检测管7为密封的管体，阀门5设置在检测管7的管头处，阀门5为球阀。检测管7上设置有泄压孔3，泄压孔3用橡胶塞密封。 This embodiment includes a detection tube 7, a detection rod 1 and a valve 5. One end of the detection rod 1 is located in the detection tube 7, and the other end is located outside the detection tube 7. The end of the detection rod 1 located in the detection tube 7 is provided with a scale. And the arc contact head 4 is arranged at the end, the detection pipe 7 is a sealed pipe body, the valve 5 is arranged at the pipe head of the detection pipe 7, and the valve 5 is a ball valve. The detection pipe 7 is provided with a pressure relief hole 3, and the pressure relief hole 3 is sealed with a rubber plug.
实施例3 Example 3
本实施例包括检测管7、检测杆1和阀门5，检测杆1一端位于检测管7内，另一端位于检测管7外，所述检测杆1位于检测管7内的一端上设置有刻度，且在端头设置有弧面接触头4，检测管7为密封的管体，阀门5设置在检测管7的管头处，阀门5为球阀。所述检测管7的管尾处设置有密封圈2。 This embodiment includes a detection tube 7, a detection rod 1 and a valve 5. One end of the detection rod 1 is located in the detection tube 7, and the other end is located outside the detection tube 7. The end of the detection rod 1 located in the detection tube 7 is provided with a scale. And the arc contact head 4 is arranged at the end, the detection pipe 7 is a sealed pipe body, the valve 5 is arranged at the pipe head of the detection pipe 7, and the valve 5 is a ball valve. A sealing ring 2 is provided at the end of the detection tube 7 .
实施例4 Example 4
本实施例包括检测管7、检测杆1和阀门5，检测杆1一端位于检测管7内，另一端位于检测管7外，所述检测杆1位于检测管7内的一端上设置有刻度，且在端头设置有弧面接触头4，检测管7为密封的管体，阀门5设置在检测管7的管头处，阀门5为球阀。检测管7上设置有泄压孔3，泄压孔3用橡胶塞密封。所述检测管7的管尾处设置有密封圈2。 This embodiment includes a detection tube 7, a detection rod 1 and a valve 5. One end of the detection rod 1 is located in the detection tube 7, and the other end is located outside the detection tube 7. The end of the detection rod 1 located in the detection tube 7 is provided with a scale. And the arc contact head 4 is arranged at the end, the detection pipe 7 is a sealed pipe body, the valve 5 is arranged at the pipe head of the detection pipe 7, and the valve 5 is a ball valve. The detection pipe 7 is provided with a pressure relief hole 3, and the pressure relief hole 3 is sealed with a rubber plug. A sealing ring 2 is provided at the end of the detection tube 7 .
实施例5 Example 5
本实施例包括检测管7、检测杆1和阀门5，检测杆1一端位于检测管7内，另一端位于检测管7外，所述检测杆1位于检测管7内的一端上设置有刻度，且在端头设置有弧面接触头4，检测管7为密封的管体，阀门5设置在检测管7的管头处，阀门5为球阀。检测杆1位于检测管外的一端设置有把手8。 This embodiment includes a detection tube 7, a detection rod 1 and a valve 5. One end of the detection rod 1 is located in the detection tube 7, and the other end is located outside the detection tube 7. The end of the detection rod 1 located in the detection tube 7 is provided with a scale. And the arc contact head 4 is arranged at the end, the detection pipe 7 is a sealed pipe body, the valve 5 is arranged at the pipe head of the detection pipe 7, and the valve 5 is a ball valve. One end of the detection rod 1 outside the detection tube is provided with a handle 8 .
实施例6 Example 6
本实施例包括检测管7、检测杆1和阀门5，检测杆1一端位于检测管7内，另一端位于检测管7外，所述检测杆1位于检测管7内的一端上设置有刻度，且在端头设置有弧面接触头4，检测管7为密封的管体，阀门5设置在检测管7的管头处，阀门5为球阀。检测管7上设置有泄压孔3，泄压孔3用橡胶塞密封。检测杆1位于检测管外的一端设置有把手8。 This embodiment includes a detection tube 7, a detection rod 1 and a valve 5. One end of the detection rod 1 is located in the detection tube 7, and the other end is located outside the detection tube 7. The end of the detection rod 1 located in the detection tube 7 is provided with a scale. And the arc contact head 4 is arranged at the end, the detection pipe 7 is a sealed pipe body, the valve 5 is arranged at the pipe head of the detection pipe 7, and the valve 5 is a ball valve. The detection pipe 7 is provided with a pressure relief hole 3, and the pressure relief hole 3 is sealed with a rubber plug. One end of the detection rod 1 outside the detection tube is provided with a handle 8 .
实施例7 Example 7
本实施例包括检测管7、检测杆1和阀门5，检测杆1一端位于检测管7内，另一端位于检测管7外，所述检测杆1位于检测管7内的一端上设置有刻度，且在端头设置有弧面接触头4，检测管7为密封的管体，阀门5设置在检测管7的管头处，阀门5为球阀。所述检测管7的管尾处设置有密封圈2。检测杆1位于检测管外的一端设置有把手8。 This embodiment includes a detection tube 7, a detection rod 1 and a valve 5. One end of the detection rod 1 is located in the detection tube 7, and the other end is located outside the detection tube 7. The end of the detection rod 1 located in the detection tube 7 is provided with a scale. And the arc contact head 4 is arranged at the end, the detection pipe 7 is a sealed pipe body, the valve 5 is arranged at the pipe head of the detection pipe 7, and the valve 5 is a ball valve. A sealing ring 2 is provided at the end of the detection tube 7 . One end of the detection rod 1 outside the detection tube is provided with a handle 8 .
实施例8 Example 8
本实施例包括检测管7、检测杆1和阀门5，检测杆1一端位于检测管7内，另一端位于检测管7外，所述检测杆1位于检测管7内的一端上设置有刻度，且在端头设置有弧面接触头4，检测管7为密封的管体，阀门5设置在检测管7的管头处，阀门5为球阀。检测管7上设置有泄压孔3，泄压孔3用橡胶塞密封。所述检测管7的管尾处设置有密封圈2。检测杆1位于检测管外的一端设置有把手8。 This embodiment includes a detection tube 7, a detection rod 1 and a valve 5. One end of the detection rod 1 is located in the detection tube 7, and the other end is located outside the detection tube 7. The end of the detection rod 1 located in the detection tube 7 is provided with a scale. And the arc contact head 4 is arranged at the end, the detection pipe 7 is a sealed pipe body, the valve 5 is arranged at the pipe head of the detection pipe 7, and the valve 5 is a ball valve. The detection pipe 7 is provided with a pressure relief hole 3, and the pressure relief hole 3 is sealed with a rubber plug. A sealing ring 2 is provided at the end of the detection tube 7 . One end of the detection rod 1 outside the detection tube is provided with a handle 8 .
实施例9 Example 9
在上述任一实施例的基础之上，本实施例检测管7的尾部设置有内螺纹，所述检测杆1上设置有外螺纹，检测杆1通过内外螺纹旋接在检测管7内。 On the basis of any of the above embodiments, the tail of the detection tube 7 in this embodiment is provided with an internal thread, and the detection rod 1 is provided with an external thread, and the detection rod 1 is screwed into the detection tube 7 through the internal and external threads.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420563184.8U CN204154238U (en) | 2014-09-28 | 2014-09-28 | A kind of device detecting pipeline scaling thickness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420563184.8U CN204154238U (en) | 2014-09-28 | 2014-09-28 | A kind of device detecting pipeline scaling thickness |
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| Publication Number | Publication Date |
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| CN204154238U true CN204154238U (en) | 2015-02-11 |
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| CN201420563184.8U Expired - Lifetime CN204154238U (en) | 2014-09-28 | 2014-09-28 | A kind of device detecting pipeline scaling thickness |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107702688A (en) * | 2017-09-28 | 2018-02-16 | 宁波工程学院 | A kind of embedded device for pipe settlement observation station |
| CN116697859A (en) * | 2023-08-07 | 2023-09-05 | 华能左权煤电有限责任公司 | Boiler scale thickness measuring equipment |
-
2014
- 2014-09-28 CN CN201420563184.8U patent/CN204154238U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107702688A (en) * | 2017-09-28 | 2018-02-16 | 宁波工程学院 | A kind of embedded device for pipe settlement observation station |
| CN116697859A (en) * | 2023-08-07 | 2023-09-05 | 华能左权煤电有限责任公司 | Boiler scale thickness measuring equipment |
| CN116697859B (en) * | 2023-08-07 | 2023-11-07 | 华能左权煤电有限责任公司 | Boiler scale thickness measuring equipment |
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