Sensor protection cover structure

Abstract

The utility model discloses a sensor protection cover structure, which comprises a protection sleeve, the protection sleeve comprises a bolt connecting part and a positioning part, and the bolt connecting part is used for being connected with a top cover bolt; the positioning component is located in the inner cavity of the protective sleeve and connected with the positioning part, the positioning component is used for abutting against the top of a sensor detection head, and a channel for a sensor signal connector to pass through is formed in the positioning component. The beneficial effects of the utility model are that the positioning member is connected to the inner cavity of the protective sleeve and is positioned, so that the positioning member applies pressure to the sensor detection head and prevents the sensor detection head from moving along the axial direction of the protective sleeve, and the sensor detection head is limited on the basis of the connection of the instant adhesive and the foam adhesive; the sensor measuring head is prevented from falling off from the top cover bolt so as to ensure that the sensor can keep in contact with the top cover bolt for a long time and continuously detect the stress data of the top cover bolt.

Description

Technical Field

[0001] The utility model relates to the technology of the protection structure of a sensor, and particularly relates to a sensor protection cover structure. Background Art

[0002] The hydropower unit is provided with an on-line monitoring system for the unit state. The on-line monitoring system for the unit state realizes the stress monitoring of the top cover bolts by measuring the length change of the bolts, determines the working state of the bolts through the detected data, and combines the operating conditions of the unit to diagnose problems such as bolt loosening, fatigue, and fracture in real time.

[0003] Currently, in the stress monitoring system of the top cover bolts, the connection method between the sensor and the top cover bolts is that the sensor is connected to the top cover bolts through quick-drying glue, and the surrounding of the sensor is filled with foam glue for re-fixing. The connection strength between the sensor and the top cover bolts is low, resulting in the sensor being extremely easy to fall off from the top cover bolts. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is that the existing connection strength between the sensor and the top cover bolts is low, and the sensor is easy to fall off. The purpose is to provide a sensor protection cover structure, which limits the sensor probe on the basis of the connection of quick-drying glue and foam glue by setting a positioning member, prevents the sensor probe from falling off from the top cover bolts, so that the sensor can keep in contact with the top cover bolts for a long time and continuously detect the stress data of the top cover bolts.

[0005] The utility model is realized through the following technical solutions:

[0006] A sensor protection cover structure includes a protection sleeve. The protection sleeve includes a bolt connection part and a positioning part. The bolt connection part is used for connecting with the top cover bolts.

[0007] A positioning member is located in the inner cavity of the protection sleeve and is connected with the positioning part. The positioning member is used for abutting against the top of the sensor detection head, and a channel for the sensor signal connector to pass through is formed on the positioning member.

[0008] The utility model adopting the above scheme connects the protection sleeve with the top cover bolts to position the protection sleeve on the top cover bolts; also locates the positioning member in the inner cavity of the protection sleeve to apply pressure to the sensor detection head by the positioning member, prevent the sensor probe from moving axially along the protection sleeve, limit the sensor probe on the basis of the connection of quick-drying glue and foam glue, prevent the sensor probe from falling off from the top cover bolts, and ensure that the sensor can keep in contact with the top cover bolts for a long time and continuously detect the stress data of the top cover bolts.

[0009] In one embodiment, the positioning member includes a positioning block and a pressing structure. The outer side of the positioning block is matched with the inner side wall of the positioning portion. A strip-shaped through hole for the sensor signal connector to pass through is provided on the positioning block. The pressing structure is connected to the positioning portion and abuts against the positioning block. Since the signal of the sensor is tested before the sensor is installed and fixed, and the sensor is moved during the test to select a position where the sensor signal is stable, and then the sensor detection head is fixed at this position with quick-drying glue. Therefore, a strip-shaped through hole is provided on the positioning block to facilitate the fixing of the sensor at the position where the signal is stable.

[0010] In one embodiment, two circular holes are provided on the positioning block, and the two circular holes are respectively located on both sides of the strip-shaped through hole. Through the circular holes, it is convenient for tools to extend into the circular holes to finely adjust the position of the positioning block.

[0011] In one embodiment, a sunk platform is provided at the bottom of the positioning block, and the bottom of the sunk platform abuts against the top of the sensor detection head. Since the outer side of the positioning block is matched with the inner side wall of the positioning portion, if the positioning block is too thin, the positioning block will tilt in the inner cavity of the positioning portion, affecting the limiting effect on the sensor. If it is too thick, the thickness of the protective cover will be increased, increasing the overall cost. Therefore, a sunk platform is provided at the bottom of the positioning block to prevent the positioning block from tilting without increasing the thickness of the protective cover, so as to ensure the limiting effect on the sensor.

[0012] In one embodiment, the pressing structure includes a pressing ring and a positioning ring. The positioning ring and the pressing ring are sequentially connected to the positioning portion from bottom to top to limit the movement of the positioning block. By providing the pressing ring and the positioning ring to limit the positioning block, the movement of the positioning block is prevented, and then the sensor detection head is limited.

[0013] In one embodiment, a first locking screw is further included. An opening is provided on the positioning ring, and a first threaded hole is provided on the side wall of the positioning portion. The first locking screw is screwed with the first threaded hole, and the screw rod portion of the first locking screw extends into the opening. Since the positioning ring is a circular structure, it may rotate, which may cause the positioning block to rotate, resulting in the displacement of the sensor connector and affecting the stability of the sensor signal. Therefore, an opening is provided on the positioning ring, and the first screw is inserted into the opening to prevent the positioning ring from rotating.

[0014] In one embodiment, the opening is in a tight fit with the screw rod portion of the first locking screw. To prevent a gap between the screw rod of the first locking screw and the width direction of the opening, resulting in the rotation of the positioning ring.

[0015] In one embodiment, an external thread is provided on the outer periphery of the pressing ring, and an internal thread that mates with the external thread is provided on the inner sidewall of the positioning portion, connecting the pressing ring to the positioning portion. Connecting the pressing ring to the positioning portion by means of threads facilitates disassembly and installation.

[0016] In one embodiment, a hose connector is provided on the sidewall of the positioning portion, and the hose connector is used for the signal line of the sensor to pass through. It facilitates the passage of the sensor signal line and protects the signal line.

[0017] In one embodiment, it further includes a second locking screw. The inner cross-section of the bolt connecting portion is polygonal, and several second threaded holes are provided on the inner sidewall of the bolt connecting portion. The second locking screw is screwed with the second threaded hole, and the second locking screw is used to abut against the outer periphery of the nut of the top cover bolt. Connecting the protective sleeve to the top cover bolt by means of the second locking screw facilitates disassembly and installation.

[0018] Compared with the prior art, the present utility model has the following advantages and beneficial effects:

[0019] 1. A positioning member is provided to apply pressure to the sensor detection head, preventing the sensor probe from moving axially along the protective sleeve. Based on the connection of quick-drying glue and foam glue, the sensor probe is limited to prevent the sensor probe from falling off the top cover bolt, so as to ensure that the sensor can keep in contact with the top cover bolt for a long time and continuously detect the stress data of the top cover bolt.

[0020] 2. An opening is provided on the positioning ring, and the first screw is inserted into the opening to prevent the positioning ring from rotating, ensuring that the sensor connector does not displace during detection and guaranteeing the stability of the sensor signal. Brief Description of the Drawings

[0021] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, form a part of this application, and do not constitute a limitation to the embodiments of the present utility model. In the drawings:

[0022] Figure 1 is the external shape structure diagram of the present utility model;

[0023] Figure 2 is the present utility model Figure 1 the cross-sectional view of A-A in;

[0024] Figure 3 is the present utility model Figure 1 the cross-sectional view of B-B in;

[0025] Figure 4 is the structure diagram of the positioning block in the present utility model;

[0026] Figure 5Structural diagram of the compression ring in the present utility model;

[0027] Figure 6 Structural diagram of the positioning ring in the present utility model.

[0028] Markings in the accompanying drawings and corresponding component names:

[0029] Protective sleeve 10, bolt connection part 11, positioning part 12, positioning block 20, strip-shaped through hole 21, circular hole 22, positioning ring 30, opening 31, compression ring 40, wrench opening 41, end cover 50, sensor detection head 60, sensor signal connector 61, hose connector 70. Specific embodiments

[0030] To make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the embodiments and the accompanying drawings. The illustrative embodiments and descriptions of the present utility model are only used to explain the present utility model and are not intended to limit the present utility model.

[0031] Throughout the specification, the reference to "one embodiment", "embodiment", "one example" or "example" means that the specific features, structures or characteristics described in connection with the embodiment or example are included in at least one embodiment of the present utility model. Therefore, the phrases "one embodiment", "embodiment", "one example" or "example" appearing throughout the specification do not necessarily refer to the same embodiment or example. In addition, the specific features, structures or characteristics can be combined in any appropriate combination and / or sub-combination in one or more embodiments or examples. In addition, those of ordinary skill in the art should understand that the drawings provided herein are for illustrative purposes only and are not necessarily drawn to scale. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0032] In the description of the present utility model, the orientation or positional relationships indicated by the terms "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "high", "low", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present utility model.

[0033] The terms "first", "second", etc. used in the present invention are only used to distinguish the corresponding components for the sake of clear description, and are not intended to limit any order or emphasize importance, etc. In addition, the term "connection" used herein, without special explanation, can be directly connected or indirectly connected through other components.

[0034] The sensor needs to be in contact with the top cover bolt to accurately detect the stress data of the top cover bolt. Through research, it is found that there are two reasons for the sensor to fall off. One reason is that the sensor is exposed to the external environment, and objects in the external environment may fall onto the sensor; the other reason is that the connection strength of the quick-drying glue and the foam glue for fixing the sensor is relatively low.

[0035] Therefore, the present utility model provides a sensor protection cover structure, see Figures 1-6 , including a protective sleeve 10. The protective sleeve 10 includes a bolt connection portion 11 and a positioning portion 12. The bolt connection portion 11 is used for connecting with the top cover bolt; the protective sleeve 10 is integrally in a hollow columnar structure. The bolt connection portion 11 is located at the bottom of the protective sleeve 10, and the positioning portion 12 is located in the middle of the protective sleeve 10.

[0036] A positioning member, which is located in the inner cavity of the protective sleeve 10 and is connected to the positioning portion 12. The positioning member is used for abutting against the top of the sensor detection head 60, and a channel for the sensor signal connector 61 to pass through is formed on the positioning member.

[0037] By setting the protective sleeve 10 to be connected with the top cover bolt, the protective sleeve 10 is positioned on the top cover bolt; also, by connecting the positioning member in the inner cavity of the protective sleeve 10, the positioning member is positioned, so as to apply force to the top of the sensor detection head 60, prevent the sensor detection head from moving axially along the protective sleeve 10, and limit the sensor detection head on the basis of the connection of the quick-drying glue and the foam glue, preventing the sensor detection head from falling off the top cover bolt; also, since the protective sleeve 10 is connected to cover the periphery of the sensor, it blocks objects in the environment from falling on the sensor, so as to ensure that the sensor can be in contact with the top cover bolt for a long time and detect the stress data of the top cover bolt.

[0038] The top of the protective sleeve 10 in the present utility model is set to be open, which is convenient for the installation of the sensor signal wire and the positioning member. A end cover 50 is also provided, and the end cover 50 is connected to the open port to prevent objects or dust in the external environment from entering the protective sleeve 10.

[0039] See Figure 2 and Figure 4, the positioning member includes a positioning block 20 and a pressing structure. The outer side of the positioning block 20 is matched with the inner side wall of the positioning portion 12. A strip-shaped through hole 21 for the sensor signal connector 61 to pass through is provided on the positioning block 20. The pressing structure is connected to the positioning portion 12 and abuts against the positioning block 20. Since the signal of the sensor will be tested before installing and fixing the sensor, and a position with stable signal is selected during the test, and then the sensor detection head 60 is fixed at this position with quick-drying glue. Therefore, a strip-shaped through hole 21 is provided on the positioning block 20 to facilitate the fixing of the sensor at a position with stable signal. The strip-shaped through hole 21 constitutes a part of the channel for the sensor signal connector 61 to pass through.

[0040] See Figure 2 and Figure 4 , two circular holes 22 are provided on the positioning block 20, and the two circular holes 22 are respectively located on both sides of the strip-shaped through hole 21. Through the circular holes 22, it is convenient for tools to extend into the circular holes 22 to finely adjust the position of the positioning block 20.

[0041] See Figure 2 , a sunk platform is provided at the bottom of the positioning block 20, and the bottom of the sunk platform abuts against the top of the sensor detection head 60. Since the outer side of the positioning block 20 is matched with the inner side wall of the positioning portion 12, if the positioning block 20 is too thin, the positioning block 20 will tilt in the inner cavity of the positioning portion 12, affecting the limiting effect on the sensor. If it is too thick, the thickness of the protective sleeve 10 will be increased, increasing the overall cost. Therefore, a sunk platform is provided at the bottom of the positioning block 20 to prevent the positioning block 20 from tilting without increasing the thickness of the protective sleeve 10 and ensure the limiting effect on the sensor.

[0042] See Figure 2 , the pressing structure includes a pressing ring 40 and a positioning ring 30. The positioning ring 30 and the pressing ring 40 are sequentially connected to the positioning portion 12 from bottom to top to limit the movement of the positioning block 20. By providing the pressing ring 40 and the positioning ring 30 to limit the positioning block 20, the sensor probe is further limited. The inner cavities of the positioning ring 30 and the pressing ring 40 constitute another part of the channel for the sensor signal connector 61 to pass through.

[0043] See Figure 2 and Figure 6 , an opening 31 is provided on the positioning ring 30, a first threaded hole is provided on the side wall of the positioning portion 12, and a first locking screw is screwed into the first threaded hole. The screw portion of the first locking screw extends into the opening 31. Since the positioning ring 30 is a circular structure, it may rotate, which may cause the positioning block 20 to rotate, resulting in the displacement of the sensor connector and affecting the stability of the sensor signal. Therefore, an opening 31 is provided on the positioning ring 30, and the first screw is extended into the opening 31 to prevent the positioning ring 30 from rotating.

[0044] See Figure 2 and Figure 6 The opening 31 is in a tight fit with the screw rod portion of the first locking screw, so as to prevent a gap from being formed between the screw rod of the first locking screw and the width direction of the opening 31, which may cause the positioning ring 30 to rotate.

[0045] See Figure 2 and Figure 5 The outer periphery of the pressing ring 40 is provided with an external thread, and the inner side wall of the positioning portion 12 is provided with an internal thread that matches the external thread, so as to connect the pressing ring 40 to the positioning portion 12. Connecting the pressing ring 40 to the positioning portion 12 by means of threads is convenient for disassembly and installation.

[0046] Specifically, a wrench opening 41 is provided at the top of the pressing ring 40, which is convenient for connecting the pressing ring 40 to the protective sleeve 10 by means of tools such as a wrench.

[0047] See Figure 2 A hose connector 70 is provided on the side wall of the positioning portion 12, and the hose connector 70 is used for the signal line of the sensor to pass through. It is convenient for the signal line of the sensor to pass through and protects the signal line.

[0048] See Figure 2 The inner cross-section of the bolt connection portion 11 is polygonal, which is convenient for the inner side of the side wall to cooperate with the outer periphery of the nut of the top cover bolt to prevent the protective cover from rotating; several second threaded holes are provided on the inner side wall of the bolt connection portion 11, and the second threaded holes are screwed with second locking screws, and the second locking screws are used to abut against the outer periphery of the nut of the top cover bolt. Connecting the protective sleeve 10 to the top cover bolt by means of the second locking screw is convenient for disassembly and installation.

[0049] The specific embodiments described above further elaborate on the purpose, technical solutions, and beneficial effects of the present invention. It should be understood that the above description is only the specific embodiments of the present invention and is not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sensor protection cover structure, characterized in that: A protective sleeve is included, wherein the protective sleeve includes a bolt connection portion and a positioning portion, and the bolt connection portion is used to be connected with the top cover bolt; A positioning member is located in the inner cavity of the protective sleeve and connected to the positioning portion. The positioning member is used to abut against the top of the sensor detection head. A channel for the sensor signal connector to pass through is formed on the positioning member.

2. The sensor protection cover structure according to claim 1, characterized in that: The positioning member includes a positioning block and a clamping structure. The outer side of the positioning block cooperates with the inner side wall of the positioning portion. The positioning block is provided with a strip-shaped through hole for the sensor signal connector to pass through. The clamping structure is connected to the positioning portion and abuts against the positioning block.

3. The sensor protection cover structure according to claim 2, characterized in that: The positioning block is provided with two circular holes, and the two circular holes are respectively located on two sides of the strip-shaped through hole.

4. The sensor protection cover structure according to claim 2, characterized in that: A sinking platform is arranged at the bottom of the positioning block, and the bottom of the sinking platform abuts against the top of the sensor detection head.

5. The sensor protection cover structure according to claim 2, characterized in that: The clamping structure comprises a clamping ring and a positioning ring, and the positioning ring and the clamping ring are sequentially connected to the positioning portion from bottom to top to limit the movement of the positioning block.

6. The sensor protection cover structure according to claim 5, characterized in that: It also includes a first locking screw. The positioning ring is provided with an opening. The side wall of the positioning portion is provided with a first threaded hole. The first locking screw is threadedly engaged with the first threaded hole. The screw portion of the first locking screw extends into the opening.

7. The sensor protection cover structure according to claim 6, characterized in that: The opening is tightly matched with the screw portion of the first locking screw.

8. The sensor protection cover structure according to claim 5, characterized in that: The outer circumference of the clamping ring is provided with an external thread, and the inner side wall of the positioning portion is provided with an internal thread matching the external thread, so that the clamping ring is connected to the positioning portion.

9. The sensor protection cover structure according to any one of claims 1 to 8, characterized in that: A hose connector is provided on the side wall of the positioning portion, and the hose connector is used for the signal line of the sensor to pass through.

10. The sensor protection cover structure according to any one of claims 1 to 8, characterized in that: It also includes a second locking screw. The inner side of the cross-section of the bolt connection part is polygonal. A plurality of second threaded holes are arranged on the inner side wall of the bolt connection part. The second locking screw is threadedly engaged with the second threaded hole. The second locking screw is used to abut against the outer periphery of the nut of the top cover bolt.

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