Acoustic emission sensor fixing device for tank body with accurate detection

Abstract

The utility model relates to an acoustic emission sensor fixing device for a tank body. The acoustic emission sensor fixing device comprises a fixing main body, a notch, a screw rod, a knob, a disc and a sponge pad, the fixed main body is tightly clamped into a tank shell through a notch in the lower end and is embedded into polyurethane foam at the same time, the rotary knob is rotated, the screw moves in the axial direction, and the disc and the sponge pad are pushed to enable the sensor to be tightly attached to the surface of a tank. According to the device, through a dual fixing mode of the notch and polyurethane foam, the fixing stability of the sensor is remarkably improved; secondly, thrust is uniformly distributed on the disc, so that the contact area between the sensor and the surface of the tank body is increased, and the sensor is prevented from being damaged; in addition, the distance between the sensor and the surface of the tank body is accurately regulated and controlled through scale marks on the screw rod, and therefore the optimal attaching effect is achieved. The utility model aims to solve the problems of unstable fixation, poor fitting effect, easy damage to the sensor and the like in the prior art, thereby improving the stability and accuracy of acoustic emission detection and the durability of parts.

Description

TECHNICAL FIELD

[0001] The utility model relates to acoustic emission detection technical field, concretely relates to a detection accurate acoustic emission sensor fixing device for tank body. BACKGROUND

[0002] When the tank body is detected by acoustic emission, a plurality of acoustic emission sensors need to be arranged on the surface of the tank body to collect data. However, the existing acoustic emission sensor fixing device has some deficiencies in the use process, specifically, the existing acoustic emission sensor fixing device for tank body mainly adopts a support, the two ends of the support rely on the thermal insulation layer outside the tank body as the fulcrum, the thermal insulation layer is relatively soft in texture and cannot provide sufficient supporting strength, resulting in insufficient stability; secondly, in the prior art, the acoustic emission sensor is embedded in the fixing device which lacks an adjusting mechanism, so that the operator cannot accurately control the distance between the sensor and the surface of the tank body, thereby affecting the accuracy and stability of the detection effect. SUMMARY

[0003] The utility model aims at the technical problem in the background art, provides a detection accurate acoustic emission sensor fixing device for tank body.

[0004] To achieve the above object, the utility model adopts the following technical scheme:

[0005] A detection accurate acoustic emission sensor fixing device for tank body, comprising a fixed main body, the fixed main body is inserted in the tank body shell through the slot, the fixed main body has the cylindrical cavity of containing acoustic emission sensor, the acoustic emission sensor in the fixed main body is adjusted in extension through the screw rod of being worn fixed main body.

[0006] Preferably, the screw rod is arranged in pairs.

[0007] The above technical scheme can apply force uniformly from two directions, ensure that the acoustic emission sensor is more balanced in stress on the surface of the tank body, not only improve the adhesion effect of the sensor and the surface of the tank body, but also avoid the damage of the sensor caused by the uneven stress of the single screw rod and the stress concentration on the surface of the sensor.

[0008] Preferably, the screw rod arranged in pairs has a scale mark.

[0009] The above technical scheme can accurately indicate the extension length of the screw rod, so as to control the distance between the acoustic emission sensor and the surface of the tank body, avoid the damage of the sensor or the inaccuracy of the collected signal caused by too close or too far distance.

[0010] Preferably, the acoustic emission sensor and the fixed main body are clamped between the disc and the sponge pad.

[0011] By adopting the technical scheme, the pushing force transmitted by the screw rod can be evenly distributed to the surface of the acoustic emission sensor through the buffering of the sponge pad, which not only can expand the contact area between the sensor and the surface of the tank body, thereby improving the accuracy of acoustic emission detection, but also can avoid the sliding or damage of the sensor caused by excessive local pressure.

[0012] Preferably, the inner side of the slot is provided with an elastic pad layer.

[0013] By adopting the technical scheme, buffering can be provided between the slot and the tank body shell to prevent mechanical damage to the tank body shell during the fixing process; in addition, the elastic pad layer can make the slot adapt to the irregular surface of the tank body shell, ensuring the close fit between the slot and the tank body shell, thereby improving the universality and adaptability of the device.

[0014] Preferably, the surface of the fixing body is provided with anti-skid lines or coating.

[0015] By adopting the technical scheme, the friction between the fixing body and the surface of the tank body is increased to prevent the fixing device from sliding or shifting in the case that the surface of the tank body is smooth or inclined.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] 1. Improve the stability of the fixing: through the close combination of the slot and the tank body shell and the embedding of the polyurethane foam, the stable fixing of the sensor fixing device on the surface of the tank body is realized, the stability of the acoustic emission sensor in different positions is significantly improved, and the problem of unstable fixing of the prior art on the side of the tank body is solved.

[0018] 2. Improve the accuracy of detection: a disc is arranged between the screw rod and the acoustic emission sensor, the disc uniformly distributes the pushing force through a large contact area to increase the contact area between the acoustic emission sensor and the tank body, thereby improving the stability and accuracy of the acoustic emission detection signal; in addition, a scale mark is arranged on the screw rod, which can accurately adjust the distance between the acoustic emission sensor and the surface of the tank body to ensure the best fit effect.

[0019] 3. Enhance the durability of the components: the acoustic emission sensor is expensive, the sponge pad arranged between the acoustic emission sensor and the disc can play a buffering role, thereby effectively preventing damage to the acoustic emission sensor during the pushing process of the screw rod, prolonging the service life of the acoustic emission sensor; in addition, the arrangement of the disc and the pair of screw rods can make the acoustic emission sensor bear force evenly, avoiding damage caused by excessive local pressure. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort.

[0021] Fig. 1 It is a whole structure schematic diagram of the present application.

[0022] Fig. 2 It is a fixing schematic diagram of the acoustic emission sensor fixing device in the present application.

[0023] Reference signs: 1, fixed main body; 2, acoustic emission sensor; 3, tank shell; 401, screw one; 402, screw two; 501, knob one; 502, knob two; 6, slot; 7, elastic pad; 8, disc; 9, sponge pad; 10, wiring port; 11, cylindrical cavity. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings Figs. 1-2 The present application will be described in further detail.

[0025] Please refer to the drawings of the specification Figs. 1-2 An embodiment provided by the present application: an acoustic emission sensor fixing device for tank with accurate detection, comprising a fixed main body 1, the fixed main body 1 is inserted into the tank shell 3 through the slot 6 arranged on the lower end face, the inside of the slot 6 is wrapped with the elastic pad 7, the fixed main body 1 has the cylindrical cavity 11 accommodating the acoustic emission sensor 2, the screw one 401 and the screw two 402 respectively pass through the inside of the fixed main body 1, one end of which is connected with the knob one 501 and the knob two 502, the other end indirectly contacts with the acoustic emission sensor 2 through the disc 8 and the sponge pad 9, the front end of the acoustic emission sensor 2 faces the tank surface, the knob one 501 and the knob two 502 drive the screw one 401 and the screw two 402 to move forward, and the disc 8 and the sponge pad 9 push the acoustic emission sensor 2 to tightly adhere to the tank surface.

[0026] The specific working principle is:

[0027] Firstly, the knob one 501 and the knob two 502 are reversely rotated to make the screw one 401 and the screw two 402 move backward along the axial direction to empty the cylindrical cavity 11 for placing the acoustic emission sensor 2, the disc 8 and the sponge pad 9, and wait for installing the acoustic emission sensor and the acoustic emission sensor fixing device.

[0028] Secondly, the disc 8, the sponge pad 9 and the acoustic emission sensor 2 are sequentially placed in the cylindrical cavity 11 of the fixed body 1, ensuring that each component is tightly matched and accurately positioned; the exposed detection surface of the acoustic emission sensor 2 in the fixed body 1 is directed to the surface of the tank body, and the fixed body 1 is clamped into the edge of the tank body shell 3 through the slot 6 with the elastic pad 7 arranged on the inner side, and is embedded in the polyurethane foam in the surface thermal insulation layer of the tank body.

[0029] During the installation of the acoustic emission sensor and the acoustic emission sensor fixing device, the elastic pad 7 provides a buffering effect between the slot 6 and the tank body shell 3, which not only prevents the slot 6 from causing mechanical damage to the tank body shell 3 during the fixing process, but also enables the slot 6 to adapt to the irregular surface of the tank body shell 3, ensuring that the slot 6 is tightly matched with the tank body shell 3, thereby improving the versatility and adaptability of the acoustic emission sensor fixing device; in addition, the fixed body 1 is also embedded in the polyurethane foam in the surface thermal insulation layer of the tank body, ensuring that the sensor fixing device is firmly fixed on the outside of the tank body, thereby providing stable support for subsequent acoustic emission detection.

[0030] Then, the knob one 501 and the knob two 502 are rotated forward, so that the screw rod one 401 and the screw rod two 402 push the disc 8 forward along the axial direction, the disc 8 uniformly transmits the pushing force to the sponge pad 9, and then the acoustic emission sensor 2 is pushed to the screw rod scale mark, at this time, the acoustic emission sensor 2 is tightly matched with the surface of the tank body.

[0031] During the adjustment of the position of the acoustic emission sensor by using the acoustic emission sensor fixing device, the disc 8 not only enables the acoustic emission sensor 2 to be uniformly stressed, avoiding sliding or damage caused by excessive local pressure, but also increases the contact area between the acoustic emission sensor 2 and the surface of the tank body, thereby improving the detection accuracy; at the same time, the sponge pad 9 can play a buffering role to prevent the screw rod one 401 and the screw rod two 402 from causing damage to the acoustic emission sensor 2 during the pushing process; in addition, the scale marks arranged on the screw rod one 401 and the screw rod two 402 ensure that the acoustic emission sensor 2 has the best matching effect with the surface of the tank body, thereby ensuring the stability and accuracy of the acoustic emission detection.

[0032] Finally, after the detection is completed, the fixed body 1 is gently pulled out, the screw rod one 401 and the screw rod two 402 are retracted by being reversely rotated, the acoustic emission sensor 2, the sponge pad 9 and the disc 8 are released, and the entire acoustic emission sensor and acoustic emission sensor fixing device unloading process is completed.

[0033] The above only describes the preferred embodiments of the present application, and it should be pointed out that, for ordinary skilled persons in the technical field, some improvements and refinements can be made without departing from the concept of the present application, and these improvements and refinements should also be considered within the protection scope of the present application.

Claims

1. An accurate acoustic emission sensor fixture for a tank, comprising: The utility model relates to a kind of acoustic emission sensor fixing device, including fixed body (1), the fixed body (1) is inserted in tank shell (3) by slot (6), fixed body (1) has the cylindrical cavity (11) of containing acoustic emission sensor (2), acoustic emission sensor (2) in fixed body (1) is adjusted by screw rod that is threaded fixed body (1) to be telescopic.

2. An accurate acoustic emission sensor fixture for a tank as claimed in claim 1, wherein: The screw rod is arranged in pairs.

3. An accurate acoustic emission sensor fixture for a tank as defined in claim 2, wherein: The pair of screw rods are marked with scale marks.

4. An accurate acoustic emission sensor fixing device for a tank body according to claim 1 or 2 or 3, characterized in that: A disc (8) is clamped between the acoustic emission sensor (2) and the engagement surface of the fixed body (1), and a sponge pad (9) is clamped between the disc (8) and the acoustic emission sensor (2).

5. An accurate acoustic emission sensor fixture for a tank as defined in claim 1, wherein: The inner side of the slot (6) is provided with an elastic pad (7).

6. An accurate acoustic emission sensor fixture for a tank as defined in claim 1, wherein: The surface of the fixed body (1) is provided with anti-slip lines or a coating.

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