Acoustic sensor assembly for internal leakage of steam pipeline valve and monitoring equipment thereof

Abstract

The utility model discloses an acoustic sensor assembly for inner leakage of a steam pipeline valve and monitoring equipment thereof, and relates to the technical field of monitoring equipment, the acoustic sensor assembly for inner leakage of the steam pipeline valve is used for detecting a high-temperature steam pipeline and comprises a wave guide rod, and the end part of the wave guide rod is provided with a contact end used for being in contact with the outer wall of the pipeline; the end, away from the contact end, of the wave guide rod is provided with an end base, and a connecting part is formed on the end base. According to the acoustic sensor assembly for internal leakage of the steam pipeline valve and the monitoring equipment thereof, one end of the wave guide rod abuts against the high-temperature steam pipeline at the downstream of the valve, gas leakage can be caused by internal leakage of the valve, ultrasonic waves are generated, the lengthened wave guide rod can prevent the influence of too high temperature on ultrasonic equipment, and the monitoring accuracy is improved. The wave guide rod can improve the heat dissipation efficiency, reduce the total amount of heat transfer, and prevent the equipment from being damaged due to high temperature, so that the acoustic monitoring equipment can stably work in a high-temperature steam pipeline environment.

Description

Technical Field

[0001] The present application relates to the technical field of monitoring equipment, and in particular to an acoustic sensor assembly for internal leakage of a steam pipe valve and a monitoring device thereof. Background Art

[0002] During the operation of the steam turbine in a thermal power plant, high-temperature steam is transmitted through pipelines, and the opening and closing of the pipelines involve the use of valves. However, valves may leak internally after being used for a long time. Continuous internal leakage of valves in high-temperature pipelines will affect the operation of the pipelines on the one hand, and cause continuous waste of energy on the other hand. Therefore, it is necessary to monitor the internal leakage of valves.

[0003] In the prior art, when detecting valve internal leakage, the valve internal leakage detection device is usually directly installed upstream and downstream of the valve to detect the valve internal leakage; however, since the temperature of the high-temperature steam pipeline is as high as 200+ degrees Celsius, it will cause the conventional detection device to burn out, affecting the use of the monitoring equipment. Summary of the invention

[0004] The purpose of the present application is to provide an acoustic sensor assembly for internal leakage of a steam pipe valve and a monitoring device thereof. By placing one end of a waveguide rod against the high-temperature steam pipeline downstream of the valve, the extended waveguide rod can prevent the excessive temperature from affecting the ultrasonic equipment. The waveguide rod can improve the heat dissipation efficiency, reduce the total amount of heat transfer, and avoid damage to the equipment due to high temperature.

[0005] On the one hand, according to an embodiment of the present application, an acoustic sensor assembly for internal leakage of a steam pipe valve is proposed, which is used for detecting high-temperature steam pipelines, including a waveguide rod, wherein the end of the waveguide rod is provided with a contact end for contacting the outer wall of the pipeline, and the end of the waveguide rod away from the contact end is provided with an end seat, a connecting portion is molded on the end seat, an accommodating portion is provided in the end seat, and an ultrasonic sensor is fixed in the accommodating portion.

[0006] According to one aspect of the embodiment of the present application, the contact end of the waveguide rod is provided with a high temperature resistant layer.

[0007] According to one aspect of the embodiment of the present application, a screw sleeve for threaded connection with a waveguide rod is formed on the end seat, and the waveguide rod thread is arranged in the screw sleeve.

[0008] According to one aspect of an embodiment of the present application, an adjustment sleeve is provided on the waveguide rod, a connecting plate is provided at the bottom of the adjustment sleeve, two side plates are installed on the connecting plate, the adjustment sleeve is connected between the two side plates, and the connecting plate is used to contact the outer wall of the pipeline.

[0009] According to one aspect of an embodiment of the present application, a rotation groove is opened on one side of the side plate, a rotating block is provided on the outer ring of the adjustment sleeve, the rotating block is connected in the rotation groove, and a detection member is provided on the other side of the side plate, the detection member is connected to the rotating block, and the detection member is used for rotation detection of the rotating block.

[0010] According to one aspect of the embodiment of the present application, the adjustment sleeve includes:

[0011] Two limit blocks, the inner ring of the adjustment sleeve is provided with two grooves, and the two limit blocks are respectively connected in the two grooves;

[0012] Two connecting pieces, one end of which is mounted on the limit block, and the other end of which passes through the groove and extends to the outside of the adjustment sleeve;

[0013] An outer ring plate is mounted on the adjusting sleeve, and one end of two connecting pieces are connected to the inner ring of the outer ring plate;

[0014] The two elastic members are respectively installed in the two grooves, and one end of the two elastic members is respectively installed on the two limit blocks.

[0015] According to one aspect of the embodiment of the present application, a plurality of limiting grooves are provided on the surface of the waveguide rod, and the limiting blocks are connected in the limiting grooves.

[0016] On the other hand, an embodiment of the present application provides a monitoring device, comprising the acoustic sensor assembly for internal leakage of a steam pipe valve as described in any one of the above items, and further comprising:

[0017] A heat sink, wherein a receiving cavity is formed on the heat sink, and the end seat portion extends into the receiving cavity;

[0018] A sealing member is installed in the accommodating cavity, and the end seat is connected to the inner ring of the sealing member;

[0019] A piezoelectric ceramic group is mounted on the connecting portion and connected to the ultrasonic sensor;

[0020] A heat insulation pad installed on one side of the heat sink;

[0021] A control display component is installed on one side of the thermal insulation pad.

[0022] According to one aspect of an embodiment of the present application, the control display component includes:

[0023] A display window cover, mounted on one side of the control display assembly;

[0024] A circuit board, installed in the control and display assembly;

[0025] A power supply unit, installed in the control and display assembly;

[0026] A screw cap is installed at one end of the control and display assembly.

[0027] In summary, the beneficial technical effects of this application are:

[0028] By placing one end of the waveguide rod against the high-temperature steam pipeline downstream of the valve, the internal leakage of the valve will cause gas leakage and generate ultrasonic waves. The extended waveguide rod can prevent the high temperature from affecting the ultrasonic equipment. The waveguide rod can improve the heat dissipation efficiency, reduce the total amount of heat transfer, and avoid damage to the equipment due to high temperature. This allows the monitoring equipment to work stably in the high-temperature steam pipeline environment and avoids the burning of conventional detection devices.

[0029] The design of the adjustment sleeve on the waveguide rod makes the adjustment of the waveguide rod simple and convenient. The detection component is used to detect the rotation angle of the waveguide rod. The angle adjustment can improve the ultrasonic transmission efficiency of the waveguide rod and improve the accuracy and reliability of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a three-dimensional structural schematic diagram of the present application;

[0031] Figure 2 is a schematic diagram of the internal structure of the control and display component of the present application;

[0032] Figure 3 It is a schematic diagram of the cross-sectional structure of the present application;

[0033] Figure 4 It is a schematic diagram of the structure of the adjustment sleeve, connecting plate, side plate, limit block and outer ring plate of the present application;

[0034] Figure 5 It is a schematic diagram of the cross-sectional structure of the adjustment sleeve, connecting plate, side plate, limit block and outer ring plate of the present application.

[0035] Figure numerals: 1. waveguide rod; 101. adjustment sleeve; 102. connecting plate; 103. side plate; 104. rotating block; 105. detection member; 106. limit block; 107. groove; 108. outer ring plate; 109. connecting member; 110. elastic member; 2. end seat; 201. screw sleeve; 202. connecting part; 203. piezoelectric ceramic group; 204. ultrasonic sensor; 3. heat sink; 301. sealing member; 4. thermal insulation pad; 5. control display assembly; 501. display window cover; 502. circuit board; 503. power supply unit; 504. screw cover. DETAILED DESCRIPTION

[0036] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0038] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0039] Example 1

[0040] See also Figure 1 and Figure 3 An acoustic sensor assembly for internal leakage of a steam pipe valve is used for detecting high-temperature steam pipelines, including a waveguide rod 1, wherein the end of the waveguide rod 1 is provided with a contact end for contacting the outer wall of the pipeline, and the end of the waveguide rod 1 away from the contact end is provided with an end seat 2, a connecting portion 202 is formed on the end seat 2, an accommodating portion is provided in the end seat 2, and an ultrasonic sensor 204 is fixed in the accommodating portion.

[0041] See also Figure 3 A high temperature resistant layer is provided at the contact end of the waveguide rod 1 to improve the overall high temperature resistance of the sensor. A screw sleeve 201 for threaded connection with the waveguide stem is formed on the end seat 2. The waveguide rod 1 is threadedly arranged in the screw sleeve 201 for easy installation and disassembly.

[0042] By placing one end of the waveguide rod 1 against the high-temperature steam pipeline downstream of the valve, the internal leakage of the valve will cause gas leakage and generate ultrasonic waves. The extended waveguide rod 1 can prevent the excessive temperature from affecting the ultrasonic equipment. The waveguide rod 1 can improve the heat dissipation efficiency, reduce the total amount of heat transfer, and avoid damage to the equipment due to high temperature.

[0043] Example 2

[0044] Combine the following Figure 1-Figure 3 , the monitoring device according to the embodiment of the present application is described in detail.

[0045] See attached Figure 2 and Figure 3 A monitoring device comprises: a heat sink 3, a receiving cavity formed on the heat sink 3, and the end seat 2 partially extends into the receiving cavity; a sealing member 301, installed in the receiving cavity, and the end seat 2 is connected to the inner ring of the sealing member 301; a piezoelectric ceramic group 203, installed on the connecting portion 202, and connected to an ultrasonic sensor 204; a thermal insulation pad 4, installed on one side of the heat sink 3; a control display component 5, installed on one side of the thermal insulation pad 4; the control display component 5 comprises: a display window cover 501, installed on one side of the control display component 5; a circuit board 502, installed in the control display component 5; a power supply unit 503, installed in the control display component 5; a rotary cover 504, installed at one end of the control display component 5.

[0046] Example 3

[0047] See also Figure 1 , Figure 3 , Figure 4 and Figure 5The difference between this embodiment and embodiment 1 is that an adjustment sleeve 101 is provided on the waveguide rod 1, a connecting plate 102 is provided at the bottom of the adjustment sleeve 101, two side plates 103 are installed on the connecting plate 102, the adjustment sleeve 101 is connected between the two side plates 103, the connecting plate 102 is used to contact the outer wall of the pipeline, a rotating groove is provided on one side of the side plate 103, a rotating block 104 is provided on the outer ring of the adjustment sleeve 101, the rotating block 104 is connected in the rotating groove, and a detection member 105 is provided on the other side of the side plate 103, and the detection member 105 is connected to the rotating block 104. Then, the detection member 105 is used for rotation detection of the rotating block 104. After the connecting plate 102 is attached to the outer wall of the pipeline, the waveguide rod 1 can be rotated to drive the adjusting sleeve 101 to rotate together. The adjusting sleeve 101 can drive the rotating block 104 to rotate in the rotating groove. The detection member 105 can be used to detect the rotation angle of the waveguide rod 1. The angle adjustment will ensure the improvement of the ultrasonic transmission efficiency of the waveguide rod and realize effective leakage detection. The adjusting sleeve 101 includes: two limit blocks 106. The inner ring of the adjusting sleeve 101 is provided with two grooves 107. The two limit blocks 106 are respectively connected to the two grooves 107. 7; two connecting members 109, one end of which is mounted on the limit block 106, and the other end passes through the groove 107 and extends to the outside of the adjustment sleeve 101; an outer ring plate 108 is mounted on the adjustment sleeve 101, and one end of the two connecting members 109 is connected to the inner ring of the outer ring plate 108; two elastic members 110 are respectively mounted in the two grooves 107, and one end of the two elastic members 110 is respectively mounted on the two limit blocks 106. A plurality of limit grooves are provided on the surface of the waveguide rod 1, and the limit blocks 106 are connected in the limit grooves. Rotating the outer ring plate 108 can simultaneously pull the two connecting members 10 9. The connecting piece 109 pulls the limit block 106, and the limit block 106 slides out of the limit groove and squeezes the elastic piece 110. The elastic piece 110 can provide an initial position restoring force for the limit block 106. After the limit block 106 slides out of the limit groove, the fixed restriction of the adjustment sleeve 101 on the waveguide rod 1 can be cancelled, the position of the adjustment sleeve 101 on the waveguide rod 1 can be adjusted, and the length of the waveguide rod 1 inserted into the valve can be adjusted. After loosening the outer ring plate 108, the elastic piece 110 recovers and drives the limit block 106 to reset, and the limit block 106 can be sent into other limit grooves, so that the position of the adjustment sleeve 101 on the waveguide rod 1 can be stabilized.

[0048] The elastic member 110 is made of a stainless steel spring; the detection member 105 is made of an angle encoder, which can measure the angle change of the waveguide rod 1 in real time and transmit the data to the control system or display device. By comparing the preset installation angle and the actual measurement angle, the technician can determine whether the installation position of the waveguide rod 1 is correct and make necessary adjustments; the connecting member 109 is made of nylon rope.

[0049] Example 4

[0050] The difference between this embodiment and the third embodiment is that the elastic member 110 may also be an alloy spring, the detection member 105 may also be a tilt sensor, and the connection member 109 may also be a plastic rope.

[0051] During use, the contact end of the waveguide rod 1 of the acoustic sensor assembly for the internal leakage of the steam pipe valve is brought into close contact with the outer wall of the high-temperature steam pipeline to ensure that the connecting plate 102 fits the outer wall of the pipeline. The length of the waveguide rod 1 against the gas pipeline is adjusted by adjusting the sleeve 101. The outer ring plate 108 is rotated to pull the two connecting pieces 109 at the same time. The connecting piece 109 pulls the limit block 106, and the limit block 106 slides out of the limit groove and squeezes the elastic piece 110. The elastic piece 110 can provide the limit block 106 with an initial position restoring force. After the limit block 106 slides out of the limit groove, the adjustment sleeve 101 can be removed from the waveguide rod 1. The fixed limit of the adjusting sleeve 101 can be adjusted on the waveguide rod 1, and the length of the waveguide rod 1 inserted into the valve can be adjusted. After loosening the outer ring plate 108, the elastic member 110 recovers and drives the limit block 106 to reset, and the limit block 106 can be sent into other limit grooves to stabilize the position of the adjusting sleeve 101 on the waveguide rod 1. When the waveguide rod 1 is rotated, the adjusting sleeve 101 can be driven to rotate together, and the adjusting sleeve 101 can drive the rotating block 104 to rotate in the rotating groove, and the detection member 105 can be used to detect the rotation angle of the waveguide rod 1, which helps to ensure the improvement of the ultrasonic transmission efficiency of the waveguide rod 1. High, to achieve effective leakage detection, the end seat 2 of the monitoring equipment is partially extended into the accommodating cavity of the heat sink 3, and it is ensured that the end seat 2 is tightly connected to the inner ring of the seal 301 to maintain good sealing performance. After the installation is completed, the ultrasonic sensor 204 transmits ultrasonic signals to the inside of the valve through the waveguide rod 1. These ultrasonic signals propagate on the high-temperature steam pipeline and are reflected when encountering any leakage point. The reflected ultrasonic signals are transmitted back to the ultrasonic sensor 204 through the waveguide rod 1 again to complete the signal transmission. The reflected signals received by the ultrasonic sensor 204 are transmitted to the piezoelectric ceramic group 20 3 is converted into an electrical signal and transmitted to the circuit board 502 for further processing. The circuit board 502 amplifies and filters the signal to extract the information related to the leakage. The processed signal is displayed in real time on the control display component 5 through the display window cover 501, which is convenient for the operator to observe and judge. During the whole working process, the heat sink 3 can effectively dissipate the heat inside the monitoring equipment to ensure the stable operation of the equipment. The heat insulation pad 4 can reduce the impact of the external high temperature on the inside of the monitoring equipment and protect the key components such as the internal circuit board 502 and the power supply unit 503 from being damaged by high temperature.

[0052] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0053] By placing one end of the waveguide rod 1 against the high-temperature steam pipeline downstream of the valve, internal leakage of the valve will cause gas leakage and generate ultrasonic waves. The extended waveguide rod 1 can prevent the excessive temperature from affecting the ultrasonic equipment. The waveguide rod 1 can improve the heat dissipation efficiency, reduce the total amount of heat transfer, and avoid damage to the equipment due to high temperature. This allows the monitoring equipment to work stably in the high-temperature steam pipeline environment and avoids the burning of the detection device.

[0054] The design of the adjustment sleeve 101 on the waveguide rod 1 makes the adjustment of the waveguide rod 1 simple and convenient. The detection member 105 is used to detect the rotation angle of the waveguide rod 1. The angle adjustment can improve the ultrasonic wave conduction efficiency of the waveguide rod 1 and improve the accuracy and reliability of the detection.

[0055] Through the processing of ultrasonic signals by the circuit board 502 and the real-time display function of the display window cover 501, the operator can monitor the leakage inside the valve in real time and take corresponding measures in time, thereby improving the efficiency and accuracy of leakage detection. The design of the heat sink 3 and the thermal insulation pad 4 effectively protects key components such as the circuit board 502 and the power supply unit 503 inside the monitoring equipment, thereby extending the service life of the equipment and improving the overall working stability.

[0056] The above description is only a preferred specific implementation manner of the present application, and is not intended to limit the protection scope of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An acoustic sensor assembly for internal leakage of steam pipe valves, used for detection of high-temperature steam pipelines, characterized in that: include: A waveguide rod (1), wherein the end of the waveguide rod (1) is provided with a contact end for contacting the outer wall of a pipeline, an end of the waveguide rod (1) away from the contact end is provided with an end seat (2), a connecting portion (202) is formed on the end seat (2), a receiving portion is provided in the end seat (2), and an ultrasonic sensor (204) is fixed in the receiving portion.

2. The acoustic sensor assembly according to claim 1, characterized in that: The contact end of the waveguide rod (1) is provided with a high temperature resistant layer.

3. The acoustic sensor assembly according to claim 1, characterized in that: A screw sleeve (201) for threaded connection with a waveguide rod is formed on the end seat (2), and the waveguide rod (1) is threadedly arranged in the screw sleeve (201).

4. The acoustic sensor assembly according to claim 1, characterized in that: The waveguide rod (1) comprises: An adjustment sleeve (101) is arranged on the waveguide rod (1); A connecting plate (102) is arranged at the bottom of the adjusting sleeve (101), and the connecting plate (102) is used to contact the outer wall of the pipeline; Two side plates (103) are both mounted on the connecting plate (102), and the adjusting sleeve (101) is connected between the two side plates (103); A detection member (105) is arranged on the side plate (103); the detection member (105) is connected to the adjustment sleeve (101); and the detection member (105) is used for detecting the rotation of the adjustment sleeve (101).

5. The acoustic sensor assembly according to claim 4, characterized in that: A rotation groove is provided on one side of the side plate (103); a rotation block (104) is provided on the outer ring of the adjustment sleeve (101); the rotation block (104) is connected in the rotation groove; and a detection end of the detection member (105) is connected to the rotation block (104).

6. The acoustic sensor assembly according to claim 5, characterized in that: The adjustment sleeve (101) comprises: Two limit blocks (106), the inner ring of the adjustment sleeve (101) is provided with two grooves (107), and the two limit blocks (106) are respectively connected in the two grooves (107); Two connecting pieces (109), one end of which is mounted on the limiting block (106), and the other end of which passes through the groove (107) and extends to the outside of the adjusting sleeve (101); An outer ring plate (108) is mounted on the adjustment sleeve (101), and one end of two connecting pieces (109) are connected to the inner ring of the outer ring plate (108); The two elastic members (110) are respectively installed in the two grooves (107), and one end of the two elastic members (110) is respectively installed on the two limit blocks (106).

7. The acoustic sensor assembly according to claim 6, characterized in that: A plurality of limiting grooves are provided on the surface of the waveguide rod (1), and the limiting blocks (106) are connected in the limiting grooves.

8. A monitoring device, comprising the acoustic sensor assembly for internal leakage of a steam pipe valve according to any one of claims 1 to 7, characterized in that: Also includes: A heat sink (3), wherein a receiving cavity is formed on the heat sink (3), and the end seat (2) partially extends into the receiving cavity; A sealing member (301) is installed in the accommodating cavity, and the end seat (2) is connected to the inner ring of the sealing member (301); A piezoelectric ceramic group (203) is mounted on the connecting portion (202) and connected to the ultrasonic sensor (204); A heat insulation pad (4) installed on one side of the heat sink (3); A control display assembly (5) is installed on one side of the thermal insulation pad (4).

9. A monitoring device according to claim 8, characterized in that: The control display component (5) comprises: A display window cover (501), mounted on one side of the control display assembly (5); A circuit board (502) installed in the control and display component (5); A power supply unit (503) installed in the control and display assembly (5); A rotary cover (504) is mounted on one end of the control and display assembly (5).

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