Monitoring system

Abstract

The utility model discloses a monitoring system, relates to industrial equipment diagnosis monitoring technical field, the monitoring system includes generator, monitoring unit, first magnetic attraction piece, second magnetic attraction piece and processing unit, the generator includes the casing, the casing is equipped with the mounting hole, the revolution speed sensor is installed in the mounting hole and is electrically connected with the processing unit, and the processing unit is equipped with the first magnetic attraction piece and the second magnetic attraction piece. The processing unit is used for receiving rotating speed data of the generator rotor monitored by the rotating speed sensor; the rotating speed sensor comprises a main body part and a monitoring part, the monitoring part is installed at the bottom end of the main body part, meanwhile, a first magnetic attraction piece is further installed at the bottom end of the main body part, a second magnetic attraction piece is installed in the installation hole, and the first magnetic attraction piece and the second magnetic attraction piece are correspondingly arranged and are connected through magnetic force. According to the technical scheme of the utility model, the connection between the rotating speed sensor and the generator can be prevented from loosening, so that the monitoring effect of the rotating speed sensor is prevented from being influenced by the external environment.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial equipment diagnosis and monitoring, and particularly relates to a monitoring system. Background Art

[0002] To ensure the normal operation of some industrial equipment, it is necessary to monitor its own operating status in real time. For example, a generator is a commonly used power equipment, usually composed of a stator and a rotor. External mechanical energy causes the rotor to rotate, and it works together with the stator to finally output alternating current. Therefore, during the use of the generator, the rotational speed of the rotor is usually monitored. Currently, the adopted monitoring scheme usually installs the rotational speed sensor on the generator with bolts. After long-term use, the vibration of the generator will cause the bolt connection to become loose, resulting in a poor sealing performance of the generator, making the rotational speed sensor affected by the external environment, thereby deteriorating the monitoring effect of the rotational speed sensor.

[0003] In view of this, it is necessary to propose a monitoring system to solve or at least alleviate the above technical problems. Summary of the Utility Model

[0004] The main purpose of the utility model is to propose a monitoring system, aiming to solve the technical problem that the monitoring effect deteriorates after the rotational speed sensor installed on the generator has been used for a long time.

[0005] To achieve the above purpose, the utility model proposes a monitoring system, including:

[0006] A generator, the generator includes a housing, and the housing is provided with an installation hole;

[0007] A monitoring unit, the monitoring unit includes a rotational speed sensor, the rotational speed sensor is installed in the installation hole, and the rotational speed sensor includes a monitoring part and a main body part. One end of the monitoring part is installed at the bottom end of the main body part, and the other end is arranged towards the rotor of the generator;

[0008] A first magnetic part, the first magnetic part is installed at the bottom end of the main body part;

[0009] A second magnetic part, the second magnetic part is installed inside the installation hole, and the second magnetic part is arranged opposite to the first magnetic part, and the first magnetic part is magnetically connected to the second magnetic part;

[0010] A processing unit, the processing unit is electrically connected to the rotational speed sensor, and the processing unit is used to receive the rotational speed data of the rotor monitored by the rotational speed sensor.

[0011] In an embodiment, the monitoring unit further includes a sealing gasket, and the sealing gasket is arranged at the joint between the rotational speed sensor and the generator.

[0012] In one embodiment, the housing further includes a limiting groove communicating with the mounting hole, and the limiting groove forms a limiting space.

[0013] The rotational speed sensor further includes a limiting block connected to the main body portion, and the limiting block is disposed in the limiting space.

[0014] In one embodiment, both the number of the limiting grooves and the number of the limiting blocks are two, and the two limiting blocks are arranged in one-to-one correspondence with the two limiting grooves.

[0015] In one embodiment, the number of the mounting holes is at least two, the adjacent mounting holes are spaced apart, and the rotational speed sensors are consistent with the number of the mounting holes and are arranged in one-to-one correspondence.

[0016] In one embodiment, the cross-sections of both the main body portion and the monitoring portion are circular, the cross-sectional dimension of the main body portion is larger than that of the monitoring portion, an installation space is formed in the mounting hole, and the shape of the installation space is the same as that of the rotational speed sensor.

[0017] In one embodiment, the monitoring unit further includes a vibration sensor mounted on the housing. The vibration sensor vibrates synchronously with the housing and is electrically connected to the processing unit.

[0018] In one embodiment, the housing further includes a temperature monitoring hole spaced apart from the mounting hole. The monitoring unit further includes a temperature sensor mounted in the temperature monitoring hole. The temperature measuring end of the temperature sensor faces the inside of the generator and is electrically connected to the processing unit.

[0019] In one embodiment, the generator further includes a connecting shaft that drives the rotor to rotate synchronously. One end of the connecting shaft extending out of the housing is provided with a start-stop unit for controlling the rotation or stop of the connecting shaft. The start-stop unit is electrically connected to the processing unit.

[0020] In one embodiment, the monitoring system further includes a base disposed below the generator. The generator is mounted on the base, and the base is connected to the ground.

[0021] In the technical solution provided by the present utility model, the housing of the generator is provided with the mounting holes, the monitoring unit includes the rotational speed sensor, and the rotational speed sensor is installed in the mounting holes. Among them, the rotational speed sensor includes the main body portion and the monitoring portion. One end of the monitoring portion is installed at the bottom end of the main body portion, and the other end is arranged towards the rotor of the generator to monitor the rotational speed of the rotor and send the rotational speed data of the rotor to the processing unit; a first magnetic attracting member is further provided at the bottom end of the main body portion. At the same time, a second magnetic attracting member is provided in the mounting holes, and the first magnetic attracting member and the second magnetic attracting member can connect the rotational speed sensor and the generator through magnetic connection. Through the above settings, when the rotational speed sensor monitors the rotational speed of the rotor, the rotational speed sensor can be tightly installed on the generator under the action of the first magnetic attracting member and the second magnetic attracting member, and since the first magnetic attracting member and the second magnetic attracting member are magnetically connected, the connection will not become loose due to the vibration of the generator, thereby avoiding the deterioration of the sealing performance of the generator, and further avoiding the situation that the monitoring effect of the rotational speed sensor is affected by the external environment and the monitoring effect becomes poor. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0023] Figure 1 FIG. 9 is a schematic structural diagram of a monitoring system according to an embodiment of the present utility model in a working state;

[0024] Figure 2 FIG. 13 is a schematic structural diagram of a monitoring system according to an embodiment of the present utility model in a non-working state;

[0025] Figure 3 FIG. Figure 2 19 is a schematic structural diagram from a perspective;

[0026] Figure 4 FIG. Figure 2 25 is an enlarged schematic diagram of part A in FIG.

[0027] Figure 5 FIG. Figure 3 31 is an enlarged schematic diagram of part B in FIG.

[0028] Explanation of the reference numerals in the drawings:

[0029] 100. Monitoring system; 1. Generator; 11. Housing; 111. Mounting hole; 112. Limiting groove; 2. Rotation speed sensor; 21. Monitoring part; 22. Main body part; 23. Limiting block; 3. First magnetic attracting member; 4. Second magnetic attracting member; 5. Base.

[0030] The realization, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings in combination with embodiments. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0032] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0033] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0034] During the operation of some industrial equipment, in order to ensure that it can work properly according to the established work plan and facilitate accident investigation, it is necessary to monitor the operating status of these industrial equipment. For example, a generator is an industrial equipment that converts external mechanical energy into electrical energy. A generator usually consists of a rotor and a stator. During the operation of the generator, external mechanical energy is input into the rotor of the generator and causes it to rotate. Through the combined action of the rotor and the stator, the generator outputs alternating current to the outside. In this process, the rotational speed of the rotor is an important parameter to ensure the normal operation of the generator. Therefore, it is usually necessary to monitor the rotor. Currently, when monitoring the rotor of a generator, threads are usually set on the generator, and the rotational speed sensor is connected to the generator through bolts.

[0035] After research by the applicant, it is found that when the rotational speed sensor is connected to the generator through bolts, due to the continuous vibration of the generator during operation, the rotational speed sensor installed on the generator will gradually loosen after long-term repeated vibration, resulting in poor sealing of the generator. The entry of external dust, water vapor or light into the generator will affect the monitoring effect of the rotational speed sensor. At the same time, due to the loosening of the connection between the rotational speed sensor and the generator, the rotational speed sensor will shake during the operation of the generator, which will also lead to poor monitoring effect of the rotational speed sensor.

[0036] In view of the above situation, the present utility model proposes a monitoring system 100 to solve the above technical problems.

[0037] Please refer to Figure 1 、 Figure 2 and Figure 4 In an embodiment of the present utility model, the monitoring system 100 includes a generator 1, a monitoring unit, a first magnetic attraction member 3, a second magnetic attraction member 4 and a processing unit. Among them, the generator 1 includes a housing 11, and the housing 11 is provided with an installation hole 111; the monitoring unit includes a rotational speed sensor 2, the rotational speed sensor 2 is installed in the installation hole 111, and the rotational speed sensor 2 includes a monitoring portion 21 and a main body portion 22. One end of the monitoring portion 21 is installed at the bottom end of the main body portion 22, and the other end is arranged towards the rotor of the generator 1; the first magnetic attraction member 3 is installed at the bottom end of the main body portion 22; the second magnetic attraction member 4 is installed inside the installation hole 111, and the second magnetic attraction member 4 is arranged opposite to the first magnetic attraction member 3, and the first magnetic attraction member 3 is magnetically connected to the second magnetic attraction member 4; the processing unit is electrically connected to the rotational speed sensor 2, and the processing unit is used to receive the rotational speed data of the rotor monitored by the rotational speed sensor 2.

[0038] Specifically, the monitoring system 100 monitors the state of the generator 1 during its operation through a monitoring unit. The monitoring unit includes a rotational speed sensor 2, which is used to monitor the rotational speed of the rotor of the generator 1. It is installed on the outer shell 11 of the generator 1. Specifically, an installation hole 111 is provided on the outer shell 11 of the generator 1. In this embodiment, the installation hole 111 is located at the top of the generator 1. The rotational speed sensor 2 includes a monitoring portion 21 and a main body portion 22. As Figure 4 shown, the monitoring portion 21 is installed at the lower end of the main body portion 22, and the lower end of the monitoring portion 21 faces the rotor of the generator 1, facilitating the monitoring of the rotational speed of the generator 1. The first magnetic attraction member 3 is also fixedly installed at the lower end of the main body portion 22. A second magnetic attraction member 4 is fixedly installed inside the installation hole 111. When the rotational speed sensor 2 is placed into the installation hole 111, the first magnetic attraction member 3 and the second magnetic attraction member 4 can attract each other, enabling the rotational speed sensor 2 to be tightly installed in the installation hole 111. At the same time, the rotational speed sensor 2 is electrically connected to the processing unit, enabling the rotational speed data of the rotor monitored by the rotational speed sensor 2 to be transmitted to the processing unit in real time for calculations, storage, and other processing. Among them, the first magnetic attraction member 3 and the second magnetic attraction member 4 include permanent magnets.

[0039] In the embodiment provided by the present utility model, a first magnetic attraction member 3 is provided at the bottom end of the main body portion 22 of the rotational speed sensor 2, and a second magnetic attraction member 4 is provided inside the installation hole 111. The first magnetic attraction member 3 and the second magnetic attraction member 4 can cooperate with each other and be magnetically connected, enabling the rotational speed sensor 2 to be firmly installed in the installation hole 111 of the generator 1 under the action of the first magnetic attraction member 3 and the second magnetic attraction member 4. At the same time, the rotational speed sensor 2 is electrically connected to the processing unit. Since the magnetism between the first magnetic attraction member 3 and the second magnetic attraction member 4 always exists, the magnetic connection between the first magnetic attraction member 3 and the second magnetic attraction member 4 will not become loose due to long-term vibration, thereby avoiding the loosening of the connection between the rotational speed sensor 2 and the generator 1 due to vibration, and further ensuring the sealing performance of the generator 1 and preventing the external environment from affecting the monitoring effect of the rotational speed sensor 2.

[0040] At the same time, through the above settings, when installing the rotational speed sensor 2, it is only necessary to place the rotational speed sensor 2 equipped with the first magnetic attraction member 3 into the installation hole 111 equipped with the second magnetic attraction member 4 to complete the installation; when removing or replacing the rotational speed sensor 2, no external tools are required. It is only necessary to take out the original rotational speed sensor 2 from the installation hole 111 and place the new rotational speed sensor 2 into the installation hole 111. Through the cooperation between the first magnetic attraction member 3 and the second magnetic attraction member 4, it is convenient for the operator to operate the rotational speed sensor 2, reducing the working steps of the operator when installing, removing, replacing, and maintaining the rotational speed sensor 2, and improving the working efficiency of the operator.

[0041] Further, in an embodiment of the present utility model, the monitoring unit further includes a gasket, and the gasket is disposed at the joint between the rotational speed sensor 2 and the generator 1. Specifically, the gasket is filled between the outer wall of the rotational speed sensor 2 and the inner wall of the mounting hole 111 on the generator 1, and is used to fill the gap between the rotational speed sensor 2 and the mounting hole 111. Among them, the gasket includes at least one of a silicone rubber gasket, a nitrile rubber gasket, a fluororubber gasket, and a natural rubber gasket. Through this setting, on the one hand, the gap around the rotational speed sensor 2 can be filled with the gasket, thereby further improving the sealing performance of the generator 1 and ensuring the monitoring effect of the rotational speed sensor 2; on the other hand, since the gasket is made of a flexible material, it has characteristics such as material damping and non-linear elasticity, and can absorb the vibration transmitted by the outer shell 11 of the generator 1, thereby avoiding the vibration of the outer shell 11 of the generator 1 from affecting the monitoring accuracy of the rotational speed sensor 2.

[0042] In an embodiment of the present utility model, the outer shell 11 further includes a limiting groove 112, the limiting groove 112 communicates with the mounting hole 111, and the limiting groove 112 forms a limiting space; the rotational speed sensor 2 further includes a limiting block 23, the limiting block 23 is connected to the main body portion 22, and the limiting block 23 is disposed in the limiting space. Specifically, please refer to Figure 3 With Figure 5 , a limiting groove 112 is formed around the mounting hole 111 on the outer shell 11 of the generator 1, the limiting groove 112 communicates with the mounting hole 111, and a limiting space for installing the limiting block 23 is formed between the inner wall surface of the limiting groove 112 and the contour of the mounting hole 111. Among them, the limiting block 23 is fixedly installed on the outer peripheral surface of the main body portion 22 in the rotational speed sensor 2. Through the cooperation between the limiting block 23 and the limiting groove 112, on the one hand, the installation angle of the rotational speed sensor 2 and the depth of insertion into the outer shell 11 of the generator 1 can be accurately positioned. At the same time, when installing the rotational speed sensor 2, only need to align the limiting block 23 with the limiting hole, and then the installation of the rotational speed sensor 2 can be quickly and accurately completed, improving the convenience of the installation operation of the rotational speed sensor 2; on the other hand, this setting can prevent the rotational speed sensor 2 already installed in the mounting hole 111 from rotating under the action of external force, thereby ensuring the monitoring effect of the rotational speed sensor 2 and avoiding monitoring errors caused by the rotation of the rotational speed sensor 2.

[0043] Further, please refer to Figure 5, the number of the limiting grooves 112 and the limiting blocks 23 is two each, and the two limiting blocks 23 are arranged in one-to-one correspondence with the two limiting grooves 112. In this embodiment, the cross-section of the mounting hole 111 is circular, the number of the limiting grooves 112 is two and they are symmetrically arranged along the axis of symmetry of the mounting hole 111; the number of the limiting blocks 23 is also two, which are installed on both sides of the main body portion 22 of the rotational speed sensor 2, and their positions are correspondingly arranged relative to the limiting grooves 112, so that the two limiting blocks 23 can be simultaneously snapped into the two limiting grooves 112. Through this arrangement, the force on the rotational speed sensor 2 is more balanced, avoiding stress concentration on one side of the rotational speed sensor 2 and thus damaging the rotational speed sensor 2; in addition, the symmetrical arrangement of the limiting blocks 23 and the limiting grooves 112 can reduce the offset or misalignment of components caused by manufacturing or assembly errors, indirectly improving the monitoring effect.

[0044] To further improve the stability of the monitoring system 100, in an embodiment of the present utility model, the number of the mounting holes 111 is at least two, and the adjacent mounting holes 111 are arranged at intervals. The rotational speed sensor 2 is consistent with the number of the mounting holes 111 and is arranged in one-to-one correspondence. During the operation of the rotational speed sensor 2, since the temperature inside the generator 1 is relatively high and the working environment of the rotational speed sensor 2 is relatively harsh, the rotational speed sensor 2 may malfunction. In this embodiment, at least two mounting holes 111 are formed in the outer shell 11 of the generator 1, and each mounting hole 111 is equipped with a rotational speed sensor 2. At the same time, in order to avoid interference between the rotational speed sensors 2, the adjacent two mounting holes 111 are arranged at intervals. Through this arrangement, more than two rotational speed sensors 2 can jointly monitor the rotational speed data of the generator 1. In this way, on the one hand, multiple groups of data can be obtained when monitoring the rotational speed of the generator 1, which is beneficial to reducing errors and eliminating noise during data processing; on the other hand, through this arrangement, the stability of the monitoring system 100 can be improved, avoiding the occurrence of data acquisition interruption. For example, if there are n (n≥2) rotational speed sensors 2 in a monitoring system 100 and m of them malfunction and cannot continue to work, then when m < n, there are still (n - m) rotational speed sensors 2 working, and at this time, the rotational speed data of the generator 1 can still be obtained, thus ensuring the stable operation of the monitoring system 100 and improving the stability of the monitoring system 100.

[0045] In an embodiment of the present utility model, the cross-sections of the main body portion 22 and the monitoring portion 21 are both circular, the cross-sectional dimension of the main body portion 22 is larger than that of the monitoring portion 21, and an installation space is formed in the mounting hole 111, and the shape of the installation space is the same as that of the rotational speed sensor 2. For details, please refer to Figure 4, in this embodiment, the overall shapes of the main body portion 22 and the monitoring portion 21 of the rotational speed sensor 2 are both cylindrical, but the cross-sectional diameter of the main body portion 22 is larger than that of the monitoring portion 21. The monitoring portion 21 and the main body portion 22 are coaxially arranged, and the rotational speed sensor 2 as a whole is in an inverted "convex" shape; the inner wall surface within the mounting hole 111 encloses a mounting space, and the overall shape of the mounting space is also in an inverted "convex" shape. Thus, the shape of the mounting space is the same as the overall shape of the rotational speed sensor 2. Through this setting, the outer peripheral surface of the rotational speed sensor 2 fits more closely with the inner wall of the mounting hole 111, reducing the gap between the two, thereby avoiding the influence of the external environment on the monitoring portion 21; on the other hand, adopting this setting can make the installation of the rotational speed sensor 2 more accurate. When the "convex"-shaped rotational speed sensor 2 is installed in the "convex"-shaped mounting hole 111, due to the same shape of the two, a self-calibration function can be realized, reducing the dependence on external auxiliary tools and improving the installation accuracy of the rotational speed sensor 2.

[0046] There are various factors that can cause faults in the generator 1. Therefore, it is necessary to monitor other parameters during the operation of the generator 1. In an embodiment of the present utility model, the monitoring unit further includes a vibration sensor. The vibration sensor is installed on the housing 11, and the vibration sensor vibrates synchronously with the housing 11, and the vibration sensor is electrically connected to the processing unit. In this embodiment, considering that excessive vibration acceleration of the generator 1 can lead to faults such as rotor imbalance or structural damage, therefore, the monitoring unit further includes a vibration sensor. The vibration sensor is fixedly installed on the housing 11 of the generator 1 so that the vibration sensor can vibrate synchronously with the housing 11 to monitor the vibration acceleration of the housing 11 of the generator 1 and transmit the monitoring data to the processing unit for calculation, processing, and storage.

[0047] In order to monitor the temperature change inside the generator 1, in an embodiment of the present utility model, the housing 11 further includes a temperature monitoring hole. The temperature monitoring hole is arranged at an interval from the mounting hole 111. The monitoring unit further includes a temperature sensor. The temperature sensor is installed in the temperature monitoring hole, and the temperature measuring end of the temperature sensor is arranged towards the inside of the generator 1. The temperature sensor is electrically connected to the processing unit. Specifically, the temperature sensor is used to monitor the temperature change inside the housing 11 of the generator 1 and is installed on the housing 11 of the generator 1 through the temperature monitoring hole. The temperature monitoring hole has the same structure as the mounting hole 111, and a second magnetic attracting member 4 is also arranged inside. A first magnetic attracting member 3 is arranged on the outer peripheral surface of the temperature sensor. Thus, the temperature sensor can be prevented from being interfered by the external environment, and at the same time, it is convenient for the installation and disassembly of the temperature sensor.

[0048] In one embodiment, the rotation speed of the generator 1 is monitored by setting a rotation speed sensor 2, the vibration acceleration of the outer shell 11 of the generator 1 is monitored by setting a vibration sensor, and the temperature change inside the generator 1 is monitored by setting a temperature sensor. When the generator 1 fails to stop or is damaged, the cause of the failure of the generator 1 can be promptly investigated through the above monitoring data, so as to repair and restart the generator 1 in a timely manner according to the cause of the failure, and avoid delaying the production operation of the generator 1 for a long time.

[0049] In one embodiment of the present utility model, the generator 1 further includes a connecting shaft, the connecting shaft drives the rotor to rotate synchronously, and a start-stop unit is arranged at one end of the connecting shaft extending out of the outer shell 11. The start-stop unit is used to control the rotation or stop of the connecting shaft, and the start-stop unit is electrically connected to the processing unit. The processing unit is used to receive and process various monitoring data during the operation of the generator 1 transmitted by the monitoring unit, and the start-stop unit that controls the rotation or stop of the rotor of the generator 1 is electrically connected to the processing unit. Through this setting, the operation state of the generator 1 can be monitored in real time and feedback can be sent to the start-stop unit in a timely manner. When the processing unit monitors that the rotation speed, vibration or temperature of the generator 1 exceeds the threshold under the normal operation state, a feedback instruction will be sent to the start-stop unit in a timely manner, and the start-stop unit will stop the operation of the generator 1 or reduce the rotation speed of the rotor of the generator 1 according to the instruction. In this way, the degree of automation of the operation of the generator 1 can be improved, and safety protection can be provided for the operation of the generator 1.

[0050] In one embodiment of the present utility model, the monitoring system 100 further includes a base 5, the base 5 is arranged below the generator 1, the generator 1 is installed on the base 5, and the base 5 is connected to the ground. As Figures 1 to 3 shown, the base 5 is connected to the ground or floor, and the connection methods include bolt connection, riveting, welding. Even the base 5 can be poured on the ground with cement mortar or concrete so that the base 5 is firmly connected to the ground or floor. The generator 1 is installed above the base 5, and the connection method between the two can be bolt connection, welding or riveting. The base 5 is used to support and stabilize the generator 1, reduce the vibration of the generator 1, and avoid the generator 1 from malfunctioning due to excessive vibration during operation.

[0051] The above is only an exemplary embodiment of the present utility model, and does not limit the patent scope of the present utility model. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present utility model.

Claims

1. A monitoring system, characterized in that: include: A generator, the generator comprising a housing, the housing having a mounting hole; A monitoring unit, wherein the monitoring unit comprises a rotation speed sensor, the rotation speed sensor is mounted in the mounting hole, and the rotation speed sensor comprises a monitoring part and a main body, one end of the monitoring part is mounted at the bottom end of the main body, and the other end is arranged toward the rotor of the generator; A first magnetic attraction member, wherein the first magnetic attraction member is installed at the bottom end of the main body; A second magnetic member, wherein the second magnetic member is installed in the installation hole, and the second magnetic member is arranged opposite to the first magnetic member, and the first magnetic member is magnetically connected to the second magnetic member; A processing unit, wherein the processing unit is electrically connected to the rotational speed sensor, and the processing unit is used to receive the rotational speed data of the rotor monitored by the rotational speed sensor.

2. The monitoring system according to claim 1, characterized in that: The monitoring unit further comprises a sealing gasket, which is arranged at a joint between the rotation speed sensor and the generator.

3. The monitoring system according to claim 1, characterized in that: The housing further comprises a limiting groove, the limiting groove is communicated with the mounting hole, and the limiting groove forms a limited space; The rotation speed sensor further comprises a limit block, the limit block is connected to the main body, and the limit block is arranged in the limit space.

4. The monitoring system according to claim 3, characterized in that: The number of the limiting grooves and the number of the limiting blocks are both two, and the two limiting blocks are arranged in a one-to-one correspondence with the two limiting grooves.

5. The monitoring system according to claim 1, characterized in that: The number of the mounting holes is at least two, and the adjacent mounting holes are arranged at intervals. The number of the rotation speed sensors is consistent with that of the mounting holes and they are arranged in a one-to-one correspondence.

6. The monitoring system according to claim 1, characterized in that: The cross sections of the main body and the monitoring part are both circular, the cross section of the main body is larger than that of the monitoring part, an installation space is formed in the installation hole, and the shape of the installation space is the same as that of the rotation speed sensor.

7. The monitoring system according to claim 1, characterized in that: The monitoring unit further includes a vibration sensor, which is mounted on the housing. The vibration sensor and the housing vibrate synchronously, and the vibration sensor is electrically connected to the processing unit.

8. The monitoring system according to claim 1, characterized in that: The housing further includes a temperature monitoring hole, which is spaced apart from the mounting hole. The monitoring unit further includes a temperature sensor, which is mounted in the temperature monitoring hole. The temperature measuring end of the temperature sensor is disposed toward the interior of the generator, and the temperature sensor is electrically connected to the processing unit.

9. The monitoring system according to claim 1, characterized in that: The generator also includes a connecting shaft, which drives the rotor to rotate synchronously. A start-stop unit is provided at one end of the connecting shaft extending out of the housing. The start-stop unit is used to control the rotation or stop of the connecting shaft. The start-stop unit is electrically connected to the processing unit.

10. The monitoring system according to claim 1, characterized in that: The monitoring system further comprises a base, wherein the base is arranged below the generator, the generator is mounted on the base, and the base is connected to the ground.

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