Magnetic liquid intelligent sealing system with sealing performance detection function

Abstract

The magnetic liquid intelligent sealing system with the sealing performance detection function comprises a cylinder body, a rotating shaft, a sealing assembly, a detection assembly and a display system, the cylinder body is provided with a storage cavity and an opening, the rotating shaft rotates relative to the cylinder body, the sealing assembly comprises a magnet and a pole shoe, the pole shoe is provided with pole teeth, and a sealing gap is formed between the pole teeth and the rotating shaft; the magnetic liquid forms sealing liquid rings in the sealing gaps, the detection assembly comprises a light guide part and a light receiving part, the light guide part and the light receiving part are located on the two opposite sides of any sealing liquid ring, the light guide part transmits light signals to the light receiving part or emits light signals to the light receiving part, and the light receiving part can receive the light signals and can transmit information to the display system. The display system outputs the sealing state of the sealing liquid ring according to the information. The invention provides an intelligent magnetic liquid sealing system with a sealing performance detection function to solve the technical problem that the sealing condition of magnetic liquid cannot be monitored in real time, so that personnel cannot find the broken magnetic liquid in time.

Description

Technical Field

[0001] The present application belongs to the field of magnetic liquid sealing technology, and specifically relates to a magnetic liquid intelligent sealing system with a sealing performance detection function. Background Art

[0002] There is a sealing technology, including a rotating shaft and a cylinder body, the rotating shaft can be rotatably arranged, by arranging a permanent magnet on the cylinder body, and a pole shoe with pole teeth, the pole shoe is connected to the permanent magnet, and a sealing gap is provided between the pole teeth and the rotating shaft surface, and a magnetic liquid is filled in the sealing gap, and the magnetic liquid is fixed in the sealing gap by the magnetic field of the permanent magnet, so as to achieve a sealing effect and prevent the gas in the cylinder body from escaping. However, during operation, the magnetic liquid will be broken, and there are two main reasons for the magnetic liquid to be broken: one is that when the cylinder body is running, the internal gas fluctuates, the impact force of the internal gas is too large, and the magnetic liquid is impacted by the internal gas and separated from the sealing gap; the other is that during use, the magnetic liquid will be lost due to loss such as evaporation of the matrix, resulting in the magnetic liquid being unable to withstand the pressure of the gas in the cylinder body, and the magnetic liquid is broken by the internal gas. Once the magnetic liquid is broken, the gas in the cylinder body will escape or the external gas will enter the cylinder body, so that the gas environment in the cylinder body will be destroyed. At this time, the equipment will be damaged if it continues to operate. In the prior art, it is impossible to detect the condition of the magnetic liquid in real time, and the user cannot promptly discover that the magnetic liquid has been breached, resulting in the equipment continuing to operate after the magnetic liquid loses its sealing effect, causing damage to the equipment.

[0003] Furthermore, in order to improve the sealing effect, there is a technology that sets a plurality of pole teeth at intervals on the pole shoes along the axial direction of the rotating shaft, thereby increasing the number of sealing gaps and thus increasing the amount of magnetic liquid. When the gas inside the cylinder body breaks through the magnetic liquid inside, the internal gas will be sealed by the magnetic liquid outside, thereby improving the sealing effect and extending the continuous operation time of the equipment. As long as the outermost magnetic liquid is not broken, the equipment can still operate normally. However, the existing technology is still unable to detect the real-time status of the magnetic liquid. Before the outermost layer of magnetic liquid is broken, the user cannot detect the number of internal magnetic liquid seal failures. Moreover, it is impossible to know in time after the outermost layer of magnetic liquid is broken, resulting in disorder in the maintenance and operation of the equipment. It is necessary to check the status of the internal gas at all times to determine whether the magnetic liquid is missing, and the detection efficiency is low. Summary of the invention

[0004] The present application provides a magnetic liquid intelligent sealing system with a sealing performance detection function to solve the technical problem that the prior art cannot monitor the sealing status of the magnetic liquid in real time, resulting in personnel being unable to promptly discover when the magnetic liquid is broken.

[0005] The first purpose of the present application is to provide a magnetic liquid intelligent sealing system with a sealing performance detection function, and the technical solution adopted is:

[0006] The invention comprises a cylinder body and a rotating shaft. The cylinder body is provided with a storage cavity for storing gas and an opening connected to the storage cavity. One end of the rotating shaft is arranged in the storage cavity, and the other end passes through the opening. The rotating shaft rotates relative to the cylinder body. The magnetic liquid intelligent sealing system also comprises a sealing component arranged at one end of the storage cavity near the opening. The sealing component comprises a magnet connected to the cavity of the storage cavity and a pole shoe connected to the magnet. The pole shoe has pole teeth facing the surface of the rotating shaft. The pole teeth are arranged at intervals along the axial direction of the rotating shaft. A sealing gap is arranged between the tip of the pole teeth and the surface of the rotating shaft. The sealing gap is filled with magnetic liquid. The magnetic liquid can be in the magnetic field of the magnet. The sealing gap is sealed under the action of the field to form a sealing liquid ring. The magnetic liquid intelligent sealing system also includes a detection component, which is used to detect the sealing state of any sealing liquid ring. The detection component includes a light guide and a light receiving component. The light guide and the light receiving component are located on two opposite sides of any sealing liquid ring along the axial direction of the rotating shaft. The light guide can transmit a light signal to the light receiving component or the light guide can emit a light signal to the light receiving component. The magnetic liquid intelligent sealing system also includes a display system. The light receiving component can receive the light signal and can transmit information to the display system. The display system outputs the sealing state of the sealing liquid ring according to the information.

[0007] A magnetic liquid intelligent sealing system with sealing performance detection function in the present application also includes the following additional technical features:

[0008] The detection component also includes a mounting ring, which is arranged on two opposite sides of any sealing liquid ring, and a gap is provided between the mounting ring and the sealing liquid ring. The mounting ring is provided with an assembly hole, and the assembly hole is interference fit with the rotating shaft. The detection component is provided with at least one mounting hole along the circumference of the mounting ring, and the axial direction of the mounting hole is parallel to the axial direction of the rotating shaft. The mounting hole and the sealing liquid ring are arranged opposite to each other, and the mounting holes of multiple mounting rings are arranged opposite to each other, and the light guide and the light receiving part are installed on the rotating shaft by being arranged in the mounting holes.

[0009] The light guide transmits the light signal, and any sealing liquid ring is selected as the sealing liquid ring to be detected. Mounting rings are provided on two opposite sides of the sealing liquid ring to be detected, and mounting rings are provided on two opposite sides of the sealing liquid ring located on the side of the sealing liquid ring to be detected away from the storage chamber. The mounting holes pass through the mounting rings, and the mounting ring located on the side of the sealing liquid ring to be detected away from the storage chamber is provided with a light guide. The light guide extends along the axial direction of the rotating shaft toward the side away from the storage chamber, and the light guide passes through the sealing liquid ring located behind the sealing liquid ring to be detected along the extension direction and the mounting ring to be connected with the light signal emitting device. The light signal emitting device is located on one side of the cylinder body, and the light signal emitting device rotates synchronously with the rotating shaft.

[0010] There are two mounting holes, and the two mounting holes include: a first mounting hole and a second mounting hole arranged at an interval with the first mounting hole, the light receiving member has a receiving section arranged in the first mounting hole and a connecting section arranged in the second mounting hole, any sealing liquid ring is selected as the sealing liquid ring to be detected, mounting rings are arranged on two opposite sides of the sealing liquid ring to be detected, and mounting rings are also arranged on two opposite sides of the sealing liquid ring located on the side of the sealing liquid ring to be detected away from the storage chamber, the first mounting hole and the second mounting hole pass through the mounting ring, the first mounting holes of the plurality of mounting rings are arranged oppositely, the second mounting holes of the plurality of mounting rings are arranged oppositely, the mounting ring located on the side of the sealing liquid ring to be detected away from the storage chamber is provided with a light receiving member, one end of the connecting section is connected to the receiving section, and the other end extends along the axial direction of the rotating shaft toward the side away from the storage chamber, the connecting section passes through the sealing liquid ring to be detected and the mounting ring behind the sealing liquid ring along the extension direction to be connected with the photosensitive part of the display system, the photosensitive part is located on one side of the cylinder body, and the photosensitive part rotates synchronously with the rotating shaft.

[0011] The detection assembly also includes a mounting ring, which is arranged on two opposite sides of any sealing liquid ring, and a gap is provided between the mounting ring and the sealing liquid ring. The mounting ring is provided with an assembly hole, and the assembly hole is interference-fitted with the rotating shaft. The detection assembly is provided with at least one mounting hole along the circumference of the mounting ring, and the axial direction of the mounting hole is parallel to the axial direction of the rotating shaft. The mounting hole and the sealing liquid ring are arranged oppositely, and the light guide and the light receiving member are installed on the rotating shaft by being arranged in the mounting hole;

[0012] The detection component also includes a light-guiding liquid shielding member, and a liquid shielding member is provided on one end of the mounting hole located on the side of the sealing liquid ring away from the storage cavity and facing the sealing liquid ring.

[0013] The liquid shielding member has a liquid guiding section protruding toward the sealing liquid ring, a distance is provided between the liquid guiding section and the sealing liquid ring, and the liquid guiding section is arranged opposite to the light guiding member and the light receiving member.

[0014] The liquid shielding member is further provided with a guide section, which comprises a horizontal section connected to the liquid guiding section and a vertical section connected to the mounting ring, and the guide section also comprises an arc section connecting the horizontal section and the vertical section.

[0015] The light guide transmits the optical signal to the light receiving element, and the light guide comprises an optical signal transmitting portion and a power supply portion connected to the optical signal transmitting portion.

[0016] The light guide and the light receiving member are fixed to the rotating shaft, the power supply part includes an induction coil, the light guide rotates with the rotating shaft, and the power supply part cuts the magnetic flux lines to supply power to the optical signal emitting part.

[0017] The second object of the present application is to provide a method for detecting the sealing state of a sealing liquid ring, using a magnetic liquid intelligent sealing system with a sealing performance detection function as described in the first object, selecting any sealing liquid ring as a sealing liquid ring to be detected, and the light guide and the light receiving member are located at two opposite sides of the sealing liquid ring to be detected along the axial direction of the rotating shaft, and the light guide can emit a light signal to the light receiving member, and the detection method includes:

[0018] Controlling the light guide to emit a light signal;

[0019] The light receiving element transmits information to the display system;

[0020] The display system outputs the sealing status of the sealing liquid ring to be tested according to the information;

[0021] The information transmitted by the light receiving element to the display system includes:

[0022] The light receiving element transmits information of the received light signal to the display system or the light receiving element transmits the received light signal to the display system;

[0023] The display system determines the sealing status of the sealing liquid ring based on the information including:

[0024] The display system does not receive any information or optical signal within a preset time, and the display system outputs that the sealing state of the sealing liquid ring to be tested is good;

[0025] The display system receives information or light signals intermittently within a preset time, and the display system outputs that the sealing state of the sealing liquid ring to be detected is unstable;

[0026] The display system continuously receives information or optical signals within a preset time, and the display system outputs that the sealing state of the sealing liquid ring to be detected is failed.

[0027] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0028] 1. The present application sets a magnetic liquid to form a sealing liquid ring. During the rotation of the shaft, the sealing liquid ring can seal the gas stored in the storage chamber to prevent gas leakage, and also prevent external gas from entering the storage chamber, thereby avoiding the destruction of the internal gas environment. By setting the pole teeth at intervals along the axial direction of the shaft, the number of sealing liquid rings is increased, and the sealing effect of the magnetic liquid intelligent sealing system is further improved. By respectively setting a light guide and a light receiving member on two opposite sides of any sealing liquid ring, the sealing state of the sealing liquid ring can be detected in real time, and the user's freedom of choice is improved. The user can select the sealing liquid ring to be detected as needed to ensure the rational use of maintenance resources. In a preferred embodiment, by reasonably allocating different positions for detecting sealing liquid rings of different equipment, the maintenance cycle can be coordinated to avoid simultaneous maintenance of large quantities of equipment. In addition, the present application makes full use of the intervals between adjacent pole teeth to improve space utilization. By utilizing the light-shielding property of the magnetic liquid, a light guide is set to emit or transmit a light signal, and the magnetic liquid can block the light signal. When the light receiving part receives the light signal, the light receiving part transmits information to the display system, and the display system outputs the sealing state of the sealing liquid ring according to the information, which is convenient for the user to view, and can directly feedback the state of the sealing liquid ring, and the user can view the sealing state of the sealing liquid ring in real time. In addition, the use of light signals makes the emission setting simple, simplifies the requirements for the light guide and the light receiving part, and is helpful for the installation and arrangement of the light guide and the light receiving part. By setting the light guide and the light receiving part to be located on two opposite sides of any sealing liquid ring along the axial direction of the rotating shaft, the light guide and the light receiving part are arranged relative to each other, ensuring that the light receiving part can receive the light signal after the sealing liquid ring fails. In one embodiment, the user can choose to monitor the sealing liquid ring close to the outermost sealing liquid ring in real time, so as to monitor the sealing state of the magnetic liquid intelligent sealing system in real time, avoid waste of detection resources, ensure the stability of the gas environment inside the cylinder, and prevent the occurrence of internal gas leakage and external gas from entering the cylinder.

[0029] 2. As a preferred embodiment of the present application, by setting a mounting ring, the mounting ring is provided with an assembly hole, and the assembly hole is interference fit with the rotating shaft to achieve the positioning and fixing of the mounting ring. By setting the mounting ring with a mounting hole, the light guide and the light receiving member are arranged in the mounting hole, which is convenient for the installation and positioning of the light guide and the light receiving member. By adjusting the position of the mounting hole, the position of the sealing liquid ring to be detected is adjusted to improve the detection accuracy. In a preferred embodiment, the magnetic liquid ring is close to the rotating shaft and rotates with the rotating shaft, and the other end is fixedly connected to the pole teeth. The middle part flows in transition and performs tangential motion. By adjusting the mounting hole, the state of each part can be accurately detected. As a preferred embodiment, the position of the mounting hole is adjusted so that the light guide and the light receiving member are aligned with the middle part, so that the sealing state of the sealing liquid ring can be fed back more timely. Moreover, the light guide and the light receiving member are fixed to the rotating shaft, and can rotate with the rotating shaft to ensure the stability of the detection process. In a preferred embodiment, the rotation speed of the light guide and the light receiving member is fast, and they can rotate relative to the sealing liquid ring, and the sealing liquid ring can be detected 360 degrees, thereby improving the accuracy of real-time detection. By setting a gap between the mounting ring and the sealing liquid ring, the mounting ring can be prevented from contacting the sealing liquid ring, thereby ensuring the sealing state of the sealing liquid ring. By setting the axial direction of the mounting hole to be parallel to the axial direction of the rotating shaft, it is convenient to adjust the arrangement direction of the light guide and the light receiving member. By setting the mounting hole to be opposite to the sealing liquid ring and the mounting holes of multiple mounting rings to be opposite to each other, it is convenient to set the light guide and the light receiving member to be opposite to each other.

[0030] 3. As a preferred embodiment of the present application, by setting a light guide to transmit optical signals, the setting requirements for the light guide are simplified, and the installation and assembly of the light guide are facilitated. By setting installation rings on two opposite sides of the sealing liquid ring to be detected, installation rings are provided on two opposite sides of the sealing liquid ring to be detected that is away from the storage chamber, and the installation holes pass through the installation rings. The light guide extends along the side away from the storage chamber. The installation ring guides and positions the extension of the light guide, improves the accuracy of the arrangement, ensures that the extension direction of the light guide is accurate, and the installation rings on both sides of the sealing liquid ring can provide stable support for the light guide, so that the light guide passing through the magnetic liquid can operate stably and avoid disturbance of the magnetic liquid. By setting the optical signal transmitting device to rotate synchronously with the rotating shaft, the entanglement of the light guide is prevented, the force on the light guide is reduced, and the stability of the magnetic liquid intelligent sealing system is improved.

[0031] 4. As a preferred embodiment of the present application, by setting a first mounting hole and a second mounting hole, the installation space of the mounting ring is increased. By setting the light receiving member to have a receiving section set in the first mounting hole and a connecting section set in the second mounting hole, the installation arrangement of the light receiving member is facilitated. By setting a plurality of first mounting holes of the mounting rings to be arranged oppositely, and a plurality of second mounting holes of the mounting rings to be arranged oppositely, a guide and positioning are provided for the extension of the connecting section. The mounting holes located on opposite sides of the sealing liquid ring provide a stable support for the connecting section, so that the connecting section passing through the magnetic liquid can remain stable during the rotation of the shaft, avoiding disturbance of the magnetic liquid, and the connecting section can stably follow the rotation of the shaft.

[0032] 5. As a preferred embodiment of the present application, a mounting ring is provided with an assembly hole, and the assembly hole is interference fit with the rotating shaft to achieve positioning and fixing of the mounting ring. The mounting ring is provided with an assembly hole, and the light guide and the light receiving part are provided in the mounting hole, which facilitates the installation and positioning of the light guide and the light receiving part. By adjusting the position of the mounting hole, the position of the sealing liquid ring to be detected can be adjusted to improve the detection accuracy. Moreover, the light guide and the light receiving part are fixed to the rotating shaft and can rotate with the rotating shaft to ensure the stability of the detection process. By providing a light-guiding liquid shielding part, on the one hand, the optical signal can be transmitted. On the other hand, when the sealing liquid ring is broken, the liquid shielding part can prevent the magnetic liquid from entering the mounting hole, thereby avoiding the influence of the magnetic liquid being broken on the light guide or the light guide.

[0033] 6. As a preferred embodiment of the present application, a protruding liquid guiding section is provided to further improve the shielding effect of the liquid shielding component. By arranging the liquid guiding section to be relative to the light guiding component and the light receiving component, the guiding function of the liquid guiding section is improved. After the sealing liquid ring is broken, the magnetic liquid contacts the liquid guiding section. Through the rotation of the rotating shaft and the action of the magnetic field, the magnetic liquid can quickly separate from the liquid guiding section. At the same time, the movement of the magnetic liquid in the space can be hindered by the liquid guiding section.

[0034] Furthermore, by providing the guide section, the guiding effect on the magnetic liquid is improved, and the influence of the magnetic liquid on the light guide member and the liquid shielding member can be avoided.

[0035] 7. As a preferred embodiment of the present application, by providing a light guide capable of transmitting an optical signal to a light receiving component, the setting of the magnetic liquid intelligent sealing system is simplified, the installation and maintenance of the light guide can be facilitated, and the anti-interference capability of the light guide can be improved.

[0036] Furthermore, by fixing the light guide and the light receiving member on the rotating shaft, the light guide and the light receiving member can rotate along with the rotating shaft, and by providing a power supply portion including an induction coil, continuous power generation is achieved through the rotation of the light guide, so that the light guide can continuously emit light signals, thereby extending the service life of the light guide and the detection time. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0038] Figure 1 This is a schematic diagram of a magnetic liquid intelligent sealing system with a sealing performance detection function under a preferred embodiment of the present application;

[0039] Figure 2 for Figure 1 A magnified image of the middle part;

[0040] Figure 3 This is a schematic diagram of the mounting ring structure in a preferred embodiment of the present application;

[0041] Figure 4 for Figure 3 Enlarged view of part B in the middle;

[0042] Figure 5 A side view of the mounting ring in a preferred embodiment of the present application;

[0043] Figure 6 for Figure 5 Enlarged view of the middle C area;

[0044] Figure 7 This is a schematic diagram of the light guide structure in a preferred embodiment of the present application.

[0045] Reference numerals:

[0046] 1. Cylinder body; 11. Storage chamber; 12. Opening;

[0047] 2. Rotating shaft;

[0048] 3. Sealing assembly; 31. Magnet; 32. Pole shoe; 321. Pole tooth;

[0049] 4. Sealing liquid ring; 41. Sealing liquid ring to be tested;

[0050] 5. Detection component; 51. Light guide; 511. Light signal transmitting part; 512. Power supply part; 52. Light receiving part; 521. Connecting section; 53. Mounting ring; 531. Assembly hole; 532. Mounting hole; 533. First mounting hole; 534. Second mounting hole; 54. Liquid shielding part; 541. Liquid guiding section; 542. Guide section; 5421. Horizontal section; 5422. Vertical section; 5423. Arc section;

[0051] 6. Display system; 61. Photosensitive unit;

[0052] 7. Optical signal transmitting device. DETAILED DESCRIPTION

[0053] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0054] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present application and the features in each embodiment may be combined with each other without conflict.

[0055] like Figure 1 , Figure 2 As shown, a magnetic liquid intelligent sealing system with a sealing performance detection function includes a cylinder body 1 and a rotating shaft 2. The cylinder body 1 is provided with a storage chamber 11 for storing gas and an opening 12 connected to the storage chamber 11. One end of the rotating shaft 2 is arranged in the storage chamber 11, and the other end passes through the opening 12. The rotating shaft 2 rotates relative to the cylinder body 1. The magnetic liquid intelligent sealing system also includes a sealing component 3 arranged at one end of the storage chamber 11 close to the opening 12. The sealing component 3 includes a magnet 31 connected to the cavity of the storage chamber 11 and a pole shoe 32 connected to the magnet 31. The pole shoe 32 has a pole tooth 321 facing the surface of the rotating shaft 2. The pole teeth 321 are arranged at intervals along the axial direction of the rotating shaft 2. The tip of the pole tooth 321 and the surface of the rotating shaft 2 are provided with a sealing gap. The sealing gap The gap is filled with magnetic liquid, which can seal the sealing gap under the action of the magnetic field of the magnet 31 to form a sealing liquid ring 4. The magnetic liquid intelligent sealing system also includes a detection component 5, which is used to detect the sealing state of any sealing liquid ring 4. The detection component 5 includes a light guide 51 and a light receiving component 52. The light guide 51 and the light receiving component 52 are located on two opposite sides of any sealing liquid ring 4 along the axial direction of the rotating shaft 2. The light guide 51 can transmit a light signal to the light receiving component 52 or the light guide 51 emits a light signal to the light receiving component 52. The magnetic liquid intelligent sealing system also includes a display system 6. The light receiving component 52 can receive a light signal and can transmit information to the display system 6. The display system 6 outputs the sealing state of the sealing liquid ring 4 according to the information.

[0056] The present application sets a magnetic liquid to form a sealing liquid ring 4. During the rotation of the shaft 2, the sealing liquid ring 4 can seal the gas stored in the storage chamber 11 to prevent gas leakage and prevent external gas from entering the storage chamber 11, thereby avoiding the destruction of the internal gas environment. By setting the pole teeth 321 to be spaced along the axial direction of the shaft 2, the number of sealing liquid rings 4 is increased, and the sealing effect of the magnetic liquid intelligent sealing system is further improved. By setting the light guide 51 and the light receiving member 52 on the two opposite sides of any sealing liquid ring 4, the sealing state of the sealing liquid ring 4 can be detected in real time, and the user's freedom of choice can be improved. The sealing liquid ring 4 to be detected can be selected according to the needs to ensure the rational use of maintenance resources. In a preferred embodiment, by reasonably allocating the different positions of the detection sealing liquid rings 4 of different equipment, the maintenance cycle can be coordinated to avoid the simultaneous maintenance of large quantities of equipment. Moreover, the present application makes full use of the intervals between adjacent pole teeth 321 to improve space utilization. By utilizing the light-shielding property of the magnetic liquid, the light guide 51 is set to be able to emit or transmit light signals, and the magnetic liquid can block the light signals. When the light receiving member 52 receives the light signal, the information is transmitted to the display system 6 through the light receiving member 52. The display system 6 outputs the sealing state of the sealing liquid ring 4 according to the information, which is convenient for users to view, and can directly feedback the state of the sealing liquid ring 4. The user can view the sealing state of the sealing liquid ring 4 in real time. In addition, the use of light signals makes the emission setting simple, simplifies the requirements for the light guide 51 and the light receiving member 52, and facilitates the installation and arrangement of the light guide 51 and the light receiving member 52. By arranging the light guide 51 and the light receiving member 52 on two opposite sides of any sealing liquid ring 4 along the axial direction of the rotating shaft 2, the light guide 51 and the light receiving member 52 are arranged relative to each other, ensuring that the light receiving member 52 can receive the light signal after the sealing liquid ring 4 fails. In one embodiment, the user can choose to monitor the sealing liquid ring 4 close to the outermost sealing liquid ring 4 in real time, so as to monitor the sealing state of the magnetic liquid intelligent sealing system in real time, avoid wasting detection resources, ensure the stability of the gas environment inside the cylinder body 1, and prevent the occurrence of internal gas leakage and the entry of external gas into the cylinder body 1.

[0057] It is clear to those skilled in the art that the present application can realize simultaneous detection of multiple sealing liquid rings 4 by respectively setting light guides 51 and light receiving parts 52 on two opposite sides of multiple sealing liquid rings 4. The present application does not limit the number of sealing liquid rings 4. At the same time, the operator can detect the sealing liquid rings 4 to be detected as needed. If the maintenance cycle needs to be reduced, the sealing liquid ring 4 close to the outermost sealing liquid ring 4 can be detected to increase the operation time of the magnetic liquid intelligent sealing system. The sealing liquid ring 4 on the relatively inner side can also be detected. When the sealing liquid ring 4 on the relatively inner side fails, maintenance can be performed to ensure timely maintenance. In the present application, the magnet 31 can be a permanent magnet or an electromagnet or other device that can generate a stable magnetic field. The present application does not limit it.

[0058] In the present application, the light guide member 51 and the light receiving member 52 may be arranged in any of the following embodiments:

[0059] Implementation method 1: Figure 1 , Figure 2 As shown, the light guide 51 and the light receiving member 52 are fixed to the rotating shaft 2. By being fixed to the rotating shaft 2, the light guide 51 and the light receiving member 52 can rotate with the rotating shaft 2. Through the speed difference between the sealing liquid ring 4 and the rotating shaft 2, the light guide 51 and the light receiving member 52 can rotate relative to the sealing liquid ring 4, thereby realizing the rotation detection of the sealing liquid ring 4.

[0060] Embodiment 2: This embodiment 2 is not shown in the figure. The light guide and the light receiving member are fixed to the pole shoe or the cylinder body. The light guide and the light receiving member have one end located on two opposite sides of the sealing liquid ring. The positions of the light guide and the light receiving member are fixed, which is convenient for the installation and maintenance of the light guide and the light receiving member, and improves the stability of the detection process.

[0061] In the first embodiment, the light guide member 51 and the light receiving member 52 may be arranged in any one of the following embodiments:

[0062] Example 1: Figure 1 - Figure 6As shown, the detection assembly 5 also includes a mounting ring 53, which is arranged on two opposite sides of any sealing liquid ring 4, and the mounting ring 53 and the sealing liquid ring 4 are spaced apart, and the mounting ring 53 is provided with an assembly hole 531, and the assembly hole 531 is interference-fitted with the rotating shaft 2, and the detection assembly 5 is provided with at least one mounting hole 532 along the circumference of the mounting ring 53, and the axial direction of the mounting hole 532 is parallel to the axial direction of the rotating shaft 2, and the mounting hole 532 is arranged opposite to the sealing liquid ring 4, and the mounting holes 532 of the plurality of mounting rings 53 are arranged opposite to each other, and the light guide 51 and the light receiving member 52 are installed on the rotating shaft 2 by being arranged in the mounting holes 532. By providing the mounting ring 53, the mounting ring 53 is provided with the assembly hole 531, and the assembly hole 531 is interference-fitted with the rotating shaft 2, so as to realize the positioning and fixing of the mounting ring 53. The mounting hole 532 is provided in the mounting ring 53, and the light guide 51 and the light receiving member 52 are arranged in the mounting hole 532, which is convenient for the installation and positioning of the light guide 51 and the light receiving member 52. By adjusting the position of the mounting hole 532, the position of the sealing liquid ring 4 to be detected can be adjusted to improve the detection accuracy. The magnetic liquid ring is close to the rotating shaft 2 and rotates with the rotating shaft 2, and the other end is fixedly connected to the pole teeth 321. The middle part flows in transition and performs tangential motion. By adjusting the mounting hole 532, the state of each part can be accurately detected. As a preferred embodiment, the position of the mounting hole 532 is adjusted so that the light guide 51 and the light receiving member 52 are aligned with the middle part, so that the sealing state of the sealing liquid ring 4 can be fed back more timely. Moreover, the light guide 51 and the light receiving member 52 are fixed to the rotating shaft 2, and can rotate with the rotating shaft 2 to ensure the stability of the detection process. The rotation speed of the light guide 51 and the light receiving member 52 is fast, and they can rotate relative to the sealing liquid ring 4, and the sealing liquid ring 4 can be detected 360 degrees, thereby improving the accuracy of real-time detection. By setting a gap between the mounting ring 53 and the sealing liquid ring 4, the mounting ring 53 can be prevented from contacting the sealing liquid ring 4, thereby ensuring the sealing state of the sealing liquid ring 4. By setting the axial direction of the mounting hole 532 to be parallel to the axial direction of the rotating shaft 2, it is convenient to adjust the arrangement direction of the light guide 51 and the light receiving member 52. By setting the mounting hole 532 to be opposite to the sealing liquid ring 4, the mounting holes 532 of the plurality of mounting rings 53 are arranged opposite to each other, thereby facilitating the arrangement of the light guide 51 and the light receiving member 52 to be opposite to each other.

[0063] Embodiment 2: This embodiment 2 is not shown in the figure. The rotating shaft is provided with positioning grooves on two opposite sides of the sealing liquid ring. The light guide member and the light receiving member have fixed ends which are interference fit with the positioning grooves.

[0064] It is clear to those skilled in the art that the light guide 51 and the light receiving member 52 can also be fixed to the rotating shaft 2 by welding, or the light guide 51 and the light receiving member 52 can be embedded in the rotating shaft 2 and have a portion exposed from the surface of the rotating shaft 2, etc., and this application does not limit this. In this application, a plurality of mounting holes 532 can also be provided, and the plurality of mounting holes 532 are arranged at intervals along the circumference of the mounting ring 53, and a plurality of light guides 51 and light receiving members 52 are provided on the mounting ring 53 on two opposite sides of the sealing liquid ring 41 to be detected.

[0065] In Embodiment 1, the light guide 51 may be arranged in any one of the following specific examples:

[0066] Specific example 1: if Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, the light guide 51 transmits the light signal, and any sealing liquid ring 4 is selected as the sealing liquid ring 41 to be detected. Figure 1 , Figure 2 The leftmost sealing liquid ring 4 is the sealing liquid ring 41 to be detected, and mounting rings 53 are provided on two opposite sides of the sealing liquid ring 41 to be detected, and mounting rings 53 are provided on two opposite sides of the sealing liquid ring 4 located on the side of the sealing liquid ring 41 to be detected away from the storage chamber 11, and mounting holes 532 pass through the mounting rings 53, and the mounting rings 53 located on the side of the sealing liquid ring 41 to be detected away from the storage chamber 11 are provided with a light guide 51, and the light guide 51 extends along the axial direction of the rotating shaft 2 toward the side away from the storage chamber 11, and the light guide 51 passes through the sealing liquid ring 4 and the mounting ring 53 located behind the sealing liquid ring 41 to be detected along the extension direction, and is connected to the optical signal emitting device 7, and the optical signal emitting device 7 is located on one side of the cylinder body 1, and the optical signal emitting device 7 rotates synchronously with the rotating shaft 2. Preferably, the light guide 51 is an optical fiber. By setting the light guide 51 to transmit the optical signal, the setting requirements of the light guide 51 are simplified, and the installation and assembly of the light guide 51 are convenient. By setting the mounting rings 53 on the two opposite sides of the sealing liquid ring 41 to be detected, the mounting rings 53 are set on the two opposite sides of the sealing liquid ring 4 located on the side of the sealing liquid ring 41 to be detected away from the storage chamber 11, the mounting holes 532 pass through the mounting rings 53, the light guide 51 extends along the side away from the storage chamber 11, and the mounting rings 53 guide and position the extension of the light guide 51, improve the accuracy of the arrangement, ensure that the extension direction of the light guide 51 is accurate, and the mounting rings 53 on both sides of the sealing liquid ring 4 can provide a stable support for the light guide 51, so that the light guide 51 passing through the magnetic liquid can run stably and avoid disturbance of the magnetic liquid. By setting the optical signal emitting device 7 to rotate synchronously with the rotating shaft 2, the winding of the light guide 51 is prevented, the force on the light guide 51 is reduced, and the stability of the magnetic liquid intelligent sealing system is improved.

[0067] Specific example 2: such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, any sealing liquid ring 4 is selected as the sealing liquid ring 41 to be tested. Figure 1 , Figure 2The leftmost sealing liquid ring 4 is the sealing liquid ring 41 to be detected, and mounting rings 53 are provided on two opposite sides of the sealing liquid ring 41 to be detected, and mounting rings 53 are provided on two opposite sides of the sealing liquid ring 4 located on the side of the sealing liquid ring 41 to be detected away from the storage chamber 11, and the light guide 51 transmits a light signal to the light receiving member 52, and the light guide 51 includes a light signal transmitting part 511 and a power supply part 512 connected to the light signal transmitting part 511. The arrangement of the light guide 51 is simplified to facilitate the installation and positioning of the light guide 51.

[0068] Specific example 3: This specific example is not shown in the figure. There are two mounting holes, which include: a first mounting hole and a second mounting hole spaced apart from the first mounting hole. Any sealing liquid ring is selected as the sealing liquid ring to be detected. Mounting rings are provided on two opposite sides of the sealing liquid ring to be detected. Mounting rings are also provided on two opposite sides of the sealing liquid ring located on the side of the sealing liquid ring to be detected away from the storage chamber. The first mounting hole and the second mounting hole pass through the mounting rings. The first mounting holes of the plurality of mounting rings are relatively arranged. The second mounting holes of the plurality of mounting rings are relatively arranged. The mounting ring located on the side of the sealing liquid ring to be detected close to the storage chamber is provided with a light guide. The light guide has a main section arranged in the first mounting hole and an extension section connected to the main section and arranged in the second mounting hole. The extension section extends toward the side away from the storage chamber. The extension section passes through the sealing liquid ring to be detected and the sealing liquid ring and the mounting ring located behind the sealing liquid ring to be detected along the extension direction. The extension section is connected to the optical signal emitting device, and the optical signal emitting device rotates synchronously with the rotating shaft.

[0069] Specific example 4: This specific example 4 is not shown in the figure. It is different from specific example 3 in that the first mounting hole and the second mounting hole of the mounting ring located on the side of the sealing liquid ring to be detected close to the storage chamber are blind holes.

[0070] It is clear to those skilled in the art that, in specific example 2, the mounting hole 532 may be a through hole or a blind hole, and the present application does not limit this. In specific example 3, the optical signal transmitting device 7 may be fixed to the rotating shaft 2 .

[0071] In Embodiment 1, the light receiving member 52 may be arranged in any one of the following specific examples:

[0072] Specific example 5: This specific example 5 is not shown in the figure. There are two mounting holes. The two mounting holes include: a first mounting hole and a second mounting hole spaced apart from the first mounting hole. The light receiving member has a receiving section arranged in the first mounting hole and a connecting section arranged in the second mounting hole. Any sealing liquid ring is selected as the sealing liquid ring to be detected. Mounting rings are arranged on two opposite sides of the sealing liquid ring to be detected. Mounting rings are also arranged on two opposite sides of the sealing liquid ring to be detected on the side away from the storage chamber. The first mounting hole and the second mounting hole pass through the mounting ring. The first mounting holes of the plurality of mounting rings are arranged opposite to each other. The second mounting holes of the plurality of mounting rings are arranged opposite to each other. The mounting ring on the side away from the storage chamber of the sealing liquid ring to be detected is provided with a light receiving member. One end of the connecting section is connected to the receiving section, and the other end extends along the axial direction of the rotating shaft toward the side away from the storage chamber. The connecting section passes through the sealing liquid ring to be detected and the mounting ring behind the sealing liquid ring to be detected along the extension direction to be connected with the photosensitive part of the display system. The photosensitive part is located on one side of the cylinder body, and the photosensitive part rotates synchronously with the rotating shaft. Preferably, the light receiving member is an optical fiber, the photosensitive part is fixed to the rotating shaft, and the photosensitive part transmits information to the display system wirelessly. By setting the first mounting hole and the second mounting hole, the installation space of the mounting ring is increased. By setting the light receiving member to have a receiving section arranged in the first mounting hole and a connecting section arranged in the second mounting hole, the installation arrangement of the light receiving member is facilitated. By setting the first mounting holes of multiple mounting rings to be arranged relatively, and the second mounting holes of multiple mounting rings to be arranged relatively, a guide and positioning are provided for the extension of the connecting section. The mounting holes located on the opposite sides of the sealing liquid ring 4 provide a stable support for the connecting section, so that the connecting section passing through the magnetic liquid can remain stable during the rotation of the rotating shaft, avoiding disturbance of the magnetic liquid, and the connecting section can stably follow the rotation of the rotating shaft.

[0073] Specific Example 6: This specific example 6 is not shown in the figure. It is different from specific example 5 in that the light receiving component has a transmitter that can wirelessly transmit information to the photosensitive part, and the photosensitive part is fixed at the installation position.

[0074] A person skilled in the art can clearly understand that, in specific example 6, the photosensitive part can also rotate synchronously with the rotating shaft. At the same time, the light receiving component can integrate the function of the photosensitive part and transmit the processed information directly to the display system, thereby realizing a high degree of integration of the light receiving component.

[0075] Specific Example 7: This specific example 7 is not shown in the figure. Any sealing liquid ring is selected as the sealing liquid ring to be detected. Mounting rings are provided on two opposite sides of the sealing liquid ring to be detected. Mounting rings are provided on two opposite sides of the sealing liquid ring to be detected on the side away from the storage chamber. The mounting holes pass through the mounting rings. The mounting ring on the side of the sealing liquid ring to be detected away from the storage chamber is provided with a light receiving component. The light receiving component extends along the axial direction of the rotating shaft toward the side away from the storage chamber. The light receiving component passes through the sealing liquid ring to be detected behind the sealing liquid ring to be detected along the extension direction and the mounting ring to be connected with the photosensitive part of the display system. The photosensitive part is located on one side of the cylinder body, and the photosensitive part rotates synchronously with the rotating shaft.

[0076] As a preferred specific example 8 under embodiment 1, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, there are two mounting holes 532, the two mounting holes 532 include: a first mounting hole 533 and a second mounting hole 534 spaced apart from the first mounting hole 533, the light guide 51 transmits the light signal, and any sealing liquid ring 4 is selected as the sealing liquid ring 41 to be detected. Figure 1 , Figure 2 The leftmost sealing liquid ring 4 is the sealing liquid ring 41 to be detected. Two opposite sides of the sealing liquid ring 41 to be detected are provided with mounting rings 53, which are located on the side of the sealing liquid ring 41 to be detected away from the storage chamber 11 ( Figure 1 , Figure 2 Mounting rings 53 are provided on opposite sides of the sealing liquid ring 4 (in the middle right side), and mounting holes 532 pass through the mounting rings 53 and are located on the side of the sealing liquid ring 41 to be detected away from the storage chamber 11 ( Figure 1 , Figure 2 The first mounting hole 533 of the mounting ring 53 (on the right side) is provided with a light guide 51, which is located on the side of the sealing liquid ring 41 to be detected close to the storage chamber 11 ( Figure 1 , Figure 2 The mounting ring 53 (on the left side in the middle) is provided with a light receiving member 52, and the light guide member 51 extends along the axial direction of the rotating shaft 2 toward the side away from the storage chamber 11. The light guide member 51 passes through the sealing liquid ring 4 and the mounting ring 53 located behind the sealing liquid ring 41 to be detected along the extension direction, and is connected with the optical signal emitting device 7. The optical signal emitting device 7 is located on one side of the cylinder body 1, and the optical signal emitting device 7 rotates synchronously with the rotating shaft 2. The light receiving member 52 has a receiving section (not shown in the drawings) arranged in the first mounting hole 533 and a connecting section 521 arranged in the second mounting hole 534. The first mounting hole 533 and The second mounting hole 534 passes through the mounting ring 53, the first mounting holes 533 of the plurality of mounting rings 53 are arranged oppositely, the second mounting holes 534 of the plurality of mounting rings 53 are arranged oppositely, one end of the connecting section 521 is connected to the receiving section, and the other end extends along the axial direction of the rotating shaft 2 toward the side away from the storage chamber 11, the connecting section 521 passes through the sealing liquid ring 41 to be detected and the sealing liquid ring 4 located behind the sealing liquid ring 41 to be detected along the extension direction, the mounting ring 53 is connected to the photosensitive part 61 of the display system 6, the photosensitive part 61 is located on one side of the cylinder body 1, and the photosensitive part 61 rotates synchronously with the rotating shaft 2. Preferably, the light receiving member 52 and the light guiding member 51 are both optical fibers.

[0077] By setting the light guide 51 connected to the optical signal emitting device 7 and the light receiving member 52 connected to the photosensitive part 61, the structure of the light guide 51 and the light receiving member 52 is simplified, the transmission of optical signals and information is facilitated, interference can be reduced, and the timeliness and accuracy of the transmission of optical signals and information can be improved.

[0078] It is clear to those skilled in the art that the thickness of the mounting ring 53 is not limited in this application. When pole shoes 32 are provided at both ends of the magnet 31, multiple mounting rings 53 may be provided between the two pole shoes 32, or one mounting ring 53 may be provided, and the mounting ring 53 extends to the pole shoes 32 on both sides. At the same time, a mounting ring 53 may also be provided on the rotating shaft 2 between the pole shoes 32 and the opening 12 to improve the guiding effect on the light guide 51 and the light receiving member 52.

[0079] In this application, if Figure 1 , Figure 2 As shown, the light guide 51 and the light receiving member 52 detect the position of the sealing liquid ring 4, which can be any one of the following embodiments:

[0080] Embodiment 3: The light guide 51 and the light receiving member 52 detect one end of the sealing liquid ring 4 close to the surface of the rotating shaft 2. The one end of the sealing liquid ring 4 close to the surface of the rotating shaft 2 rotates with the rotating shaft and forms a speed difference with the light guide 51 and the light receiving member 52. The light guide 51 and the light receiving member 52 can fully detect the sealing liquid ring 4.

[0081] Embodiment 4: The light guide 51 and the light receiving member 52 detect that the sealing liquid ring 4 is located in the middle area between the pole teeth 321 and the surface of the rotating shaft 2. The middle area of ​​the sealing liquid ring is converted from rotational motion to tangential motion. At this time, the sealing liquid ring 4 is relatively weak here, and the sealing state of the sealing liquid ring 4 is more intuitively fed back.

[0082] Embodiment 5: The light guide 51 and the light receiving member 52 detect the end of the sealing liquid ring 4 close to the pole tooth 321. The state of the end of the sealing liquid ring 4 close to the pole tooth 321 is stable. Detecting the end of the sealing liquid ring 4 close to the pole tooth 321 reduces the false alarm rate and improves the overall performance of the magnetic liquid intelligent sealing system.

[0083] As the preferred embodiment 6 of this application: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, the detection assembly 5 also includes a mounting ring 53, which is arranged on two opposite sides of any sealing liquid ring 4, and a gap is set between the mounting ring 53 and the sealing liquid ring 4. The mounting ring 53 is provided with an assembly hole 531, and the assembly hole 531 is interference-fitted with the rotating shaft 2. The detection assembly 5 is provided with at least one mounting hole 532 along the circumference of the mounting ring 53, and the axial direction of the mounting hole 532 is parallel to the axial direction of the rotating shaft 2. The mounting hole 532 is arranged opposite to the sealing liquid ring 4, and the light guide 51 and the light receiving member 52 are installed on the rotating shaft 2 by being arranged in the mounting hole 532;

[0084] The detection assembly 5 also includes a light-guiding liquid shielding member 54, and a mounting hole 532 located on the side of the sealing liquid ring 4 away from the storage chamber 11 is provided with a liquid shielding member 54 toward one end of the sealing liquid ring 4. By providing a mounting ring 53, the mounting ring 53 is provided with an assembly hole 531, and the assembly hole 531 is interference-fitted with the rotating shaft 2 to achieve the positioning and fixation of the mounting ring 53. By providing the mounting ring 53 with a mounting hole 532, the light guide member 51 and the light receiving member 52 are arranged in the mounting hole 532, which facilitates the installation and positioning of the light guide member 51 and the light receiving member 52. By adjusting the position of the mounting hole 532, the part of the sealing liquid ring 4 to be detected can be adjusted to improve the detection accuracy, and the light guide member 51 and the light receiving member 52 are fixed to the rotating shaft 2, and can rotate with the rotating shaft 2 to ensure the stability of the detection process. By setting the light-guiding liquid shielding member 54, on the one hand, the optical signal can be transmitted, and on the other hand, when the sealing liquid ring 4 is broken, the liquid shielding member 54 can prevent the magnetic liquid from entering the mounting hole 532, thereby avoiding the influence of the magnetic liquid on the docking light member 52 or the light-guiding member 51.

[0085] It is clear to those skilled in the art that a liquid shielding member 54 may be provided at one end of the mounting hole 532 facing the sealing liquid ring 4 .

[0086] In the sixth embodiment, the liquid shielding member 54 may be disposed in any one of the following embodiments:

[0087] Example 3: Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, the liquid shielding member 54 has a liquid guiding section 541 protruding toward the sealing liquid ring 4, and a distance is set between the liquid guiding section 541 and the sealing liquid ring 4, and the liquid guiding section 541 is arranged opposite to the light guide member 51 and the light receiving member 52. Preferably, the liquid guiding section 541 is also provided with a guide groove. By setting the protruding liquid guiding section 541, the shielding effect of the liquid shielding member 54 is further improved, and by setting the liquid guiding section 541 opposite to the light guide member 51 and the light receiving member 52, the guiding effect of the liquid guiding section 541 is improved. After the sealing liquid ring 4 is broken, the magnetic liquid contacts the liquid guiding section 541, and the magnetic liquid can quickly break away from the liquid guiding section 541 through the rotation of the rotating shaft 2 and the action of the magnetic field. At the same time, the movement of the magnetic liquid in the space can be hindered by the liquid guiding section 541.

[0088] Embodiment 4: This embodiment 4 is not shown in the figure, and the liquid shielding member is a curved panel arranged in the mounting hole.

[0089] In Embodiment 3, the connection mode of the liquid-conducting section 541 may be any one of the following specific examples:

[0090] Specific example 9: if Figure 3 , Figure 4 , Figure 5 , Figure 6As shown, the liquid shielding member 54 is further provided with a guide section 542, which includes a horizontal section 5421 connected to the liquid guiding section 541 and a vertical section 5422 connected to the mounting ring 53, and the guide section 542 also includes an arc section 5423 connecting the horizontal section 5421 and the vertical section 5422. By providing the guide section 542, the guiding effect of the magnetic liquid is improved, and the influence of the magnetic liquid on the light guide member 51 and the liquid shielding member 54 can be avoided.

[0091] Specific example 10: This specific example 10 is not shown in the figure, and the liquid shielding member has an inclined section connecting the liquid guiding section and the mounting ring.

[0092] It is clear to those skilled in the art that in Specific Example 9, a plurality of guide segments 542 may be arranged at intervals along the circumference of the liquid guiding segment 541 , or the guide segment 542 may extend along the circumference of the liquid guiding segment 541 .

[0093] In the present application, the optical signal source of the light guide 51 can be any one of the following embodiments:

[0094] Implementation method seven: Figure 7 As shown, the light guide 51 transmits the optical signal to the light receiving member 52, and the light guide 51 includes an optical signal transmitting portion 511 and a power supply portion 512 connected to the optical signal transmitting portion 511. By arranging that the light guide 51 can transmit the optical signal to the light receiving member 52, the setting of the magnetic liquid intelligent sealing system is simplified, the installation and maintenance of the light guide 51 can be facilitated, and the anti-interference ability of the light guide 51 is improved.

[0095] As a preferred embodiment of the seventh embodiment, the light guide member 51 and the light receiving member 52 are fixed to the rotating shaft 2. Figure 6 As shown, the power supply part 512 includes an induction coil, the light guide 51 rotates with the shaft 2, and the power supply part 512 cuts the magnetic flux lines to supply power to the optical signal emitting part 511. By setting the light guide 51 and the light receiving part 52 fixed to the shaft 2, the light guide 51 and the light receiving part 52 can rotate with the shaft 2. By setting the power supply part 512 to include an induction coil, continuous power generation is achieved through the rotation of the light guide 51, and the light guide 51 can continuously emit optical signals, thereby extending the service life of the light guide 51 and the detection time.

[0096] Implementation method eight: Figure 1 , Figure 2 As shown, the light guide 51 and the light receiving member 52 are fixed to the rotating shaft 2 , and the light guide 51 extends along the axial direction of the rotating shaft 2 toward the side away from the storage cavity 11 to connect with the optical signal emitting device 7 , and the optical signal emitting device 7 rotates synchronously with the rotating shaft 2 .

[0097] In the present application, the detection component 5 may be arranged in any of the following embodiments:

[0098] Implementation method nine: Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the detection assembly 5 also includes a mounting ring 53, which is arranged on two opposite sides of any sealing liquid ring 4, and the mounting ring 53 and the sealing liquid ring 4 are spaced apart, and the mounting ring 53 is provided with an assembly hole 531, and the assembly hole 531 is interference-fitted with the rotating shaft 2. The detection assembly 5 is provided with at least one mounting hole 532 along the circumference of the mounting ring 53, and the axial direction of the mounting hole 532 is parallel to the axial direction of the rotating shaft 2, and the mounting hole 532 is arranged opposite to the sealing liquid ring 4, and the light guide 51 and the light receiving member 52 are installed on the rotating shaft 2 by being arranged in the mounting hole 532. The detection assembly 5 detects multiple sealing liquid rings 4, and a mounting ring 53 is arranged between the sealing liquid rings 41 to be detected in two adjacent sealing gaps. The space utilization rate of the sealing assembly 3 is improved, and the installation process is simplified.

[0099] As a preferred embodiment under the ninth embodiment, which is not shown in the figure, the mounting ring is provided with a plurality of mounting holes along the circumferential direction, and different mounting holes are used for different sealing liquid rings to be detected. It is clear to those skilled in the art that the sealing liquid rings to be detected located in two adjacent sealing gaps can share one mounting ring.

[0100] Embodiment 10: Embodiment 10 is not shown in the figure. It is different from Embodiment 9 in that mounting rings are provided separately on both sides of the multiple sealing liquid rings to be detected, and the mounting rings are provided with multiple mounting holes along the circumferential direction.

[0101] Embodiment eleven: This embodiment eleven is not shown in the figure. It is different from embodiment nine in that the relatively inner side of the sealed liquid ring to be detected is selected as the first sealed liquid ring, and the relatively outer side of the sealed liquid ring to be detected is selected as the second sealed liquid ring. By setting a light guide on the mounting ring of the first sealed liquid ring close to the storage chamber, and setting a light receiving member on the mounting ring of the second sealed liquid ring away from the storage chamber, it is possible to detect multiple sealed liquid rings with one light guide and one light receiving member. Preferably, light guides capable of transmitting optical signals are provided on two opposite sides of the sealing liquid ring between the first sealing liquid ring and the second sealing liquid ring. The light guide on the side of the first sealing liquid ring close to the storage chamber is arranged relative to the light guide between the first sealing liquid ring and the second sealing liquid ring, and the light receiving member on the side of the second sealing liquid ring away from the storage chamber.

[0102] It is clear to those skilled in the art that the information transmitted by the light receiving component 52 to the display system 6 includes light signals, wireless signals, sounds, etc. The light receiving component 52 can be configured to have a sound emitting part, which can emit an alarm sound upon receiving a light signal.

[0103] The present application also provides a method for detecting the sealing state of a sealing liquid ring. Using a magnetic liquid intelligent sealing system with a sealing performance detection function disclosed in the present application, any sealing liquid ring is selected as a sealing liquid ring to be detected. The light guide and the light receiving member are located at two opposite sides of the sealing liquid ring to be detected along the axial direction of the rotating shaft. The light guide can emit a light signal to the light receiving member.

[0104] Detection methods include:

[0105] To control the light guide to emit a light signal, a person skilled in the art will clearly understand that the light guide can be connected to a light signal transmitting device to control the light signal transmitting device to emit a light signal, thereby enabling the light guide to transmit the light signal. This application does not limit the emission duration of the light signal.

[0106] The light receiving element transmits information to the display system;

[0107] The display system outputs the sealing status of the sealing liquid ring to be tested according to the information;

[0108] The information transmitted by the light receiving element to the display system includes:

[0109] The light receiving element transmits information of the received light signal to the display system or the light receiving element transmits the received light signal to the display system;

[0110] It is clear to those skilled in the art that the light receiving component can also transmit information that has not received the optical signal, and the light receiving component can transmit information wirelessly, etc., which is not limited in the present application.

[0111] The display system determines the sealing status of the sealing liquid ring based on the information including:

[0112] The display system does not receive any information or optical signal within a preset time, and the display system outputs that the sealing state of the sealing liquid ring to be tested is good;

[0113] The display system receives information or light signals intermittently within a preset time, and the display system outputs that the sealing state of the sealing liquid ring to be detected is unstable;

[0114] The display system continuously receives information or optical signals within a preset time, and the display system outputs that the sealing state of the sealing liquid ring to be detected is failed.

[0115] It is clear to those skilled in the art that the preset time can be associated with the rotation period of the shaft, or a standard value can be defined by oneself. When the light receiving component can transmit the information that the light signal is not received, the display system continues to receive the information that the light receiving component has not received the light signal within the preset time, and the display system outputs that the sealing state of the sealing liquid ring to be detected is good. The display system output of the present application can be the sealing state of the sealing liquid ring to be detected, and can also be diverse, by matching time, shaft speed and other information to output comprehensive information for the operator to view comprehensively.

[0116] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0117] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0118] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A magnetic liquid intelligent sealing system with a sealing performance detection function, comprising a cylinder body and a rotating shaft, wherein the cylinder body is provided with a storage cavity for storing gas and an opening connected to the storage cavity, one end of the rotating shaft is arranged in the storage cavity, and the other end passes through the opening, and the rotating shaft rotates relative to the cylinder body, and the magnetic liquid intelligent sealing system also includes a sealing component arranged in the storage cavity near one end of the opening, the sealing component includes a magnet connected to the cavity body of the storage cavity and a pole shoe connected to the magnet, the pole shoe has pole teeth facing the surface of the rotating shaft, the pole teeth are arranged at intervals along the axial direction of the rotating shaft, and a sealing gap is provided between the tip of the pole teeth and the surface of the rotating shaft, and the sealing gap is filled with magnetic liquid, and the magnetic liquid can seal the sealing gap under the action of the magnetic field of the magnet to form a sealing liquid ring, characterized in that The magnetic liquid intelligent sealing system also includes a detection component, which is used to detect the sealing state of any of the sealing liquid rings. The detection component includes a light guide and a light receiving component, and the light guide and the light receiving component are located on two opposite sides of any of the sealing liquid rings along the axial direction of the rotating shaft. The light guide can transmit a light signal to the light receiving component or the light guide can emit a light signal to the light receiving component. The magnetic liquid intelligent sealing system also includes a display system, and the light receiving component can receive the light signal and transmit information to the display system. The display system outputs the sealing state of the sealing liquid ring according to the information.

2. The magnetic liquid intelligent sealing system with sealing performance detection function according to claim 1 is characterized in that: The detection component also includes a mounting ring, which is arranged on two opposite sides of any of the sealing liquid rings, and a gap is provided between the mounting ring and the sealing liquid ring. The mounting ring is provided with an assembly hole, and the assembly hole is interference fit with the rotating shaft. The detection component is provided with at least one mounting hole along the circumference of the mounting ring, and the axial direction of the mounting hole is parallel to the axial direction of the rotating shaft. The mounting hole is arranged opposite to the sealing liquid ring, and the mounting holes of multiple mounting rings are arranged opposite to each other. The light guide and the light receiving member are installed on the rotating shaft by being arranged in the mounting holes.

3. The magnetic liquid intelligent sealing system with sealing performance detection function according to claim 2 is characterized in that: The light guide transmits the light signal, and any one of the sealing liquid rings is selected as the sealing liquid ring to be detected. The mounting rings are provided on two opposite sides of the sealing liquid ring to be detected, and the mounting rings are provided on two opposite sides of the sealing liquid ring located on the side of the sealing liquid ring to be detected away from the storage chamber. The mounting hole passes through the mounting ring, and the mounting ring located on the side of the sealing liquid ring to be detected away from the storage chamber is provided with the light guide. The light guide extends along the axial direction of the rotating shaft toward the side away from the storage chamber, and the light guide passes through the sealing liquid ring located behind the sealing liquid ring to be detected along the extension direction and the mounting ring to be connected with the light signal emitting device. The light signal emitting device is located on one side of the cylinder body, and the light signal emitting device rotates synchronously with the rotating shaft.

4. The magnetic liquid intelligent sealing system with sealing performance detection function according to claim 2 is characterized in that: There are two mounting holes, and the two mounting holes include: a first mounting hole and a second mounting hole spaced apart from the first mounting hole. The light receiving member has a receiving section arranged in the first mounting hole and a connecting section arranged in the second mounting hole. Any of the sealing liquid rings is selected as the sealing liquid ring to be detected. The mounting rings are arranged on two opposite sides of the sealing liquid ring to be detected, and the mounting rings are also arranged on two opposite sides of the sealing liquid ring located on the side of the sealing liquid ring to be detected away from the storage chamber. The first mounting hole and the second mounting hole pass through the mounting ring. The first mounting holes of a plurality of mounting rings are arranged oppositely, and the second mounting holes of a plurality of mounting rings are arranged oppositely. The mounting ring located on the side of the sealing liquid ring to be detected away from the storage chamber is provided with the light receiving member. One end of the connecting section is connected to the receiving section, and the other end extends along the axial direction of the rotating shaft toward the side away from the storage chamber. The connecting section passes through the sealing liquid ring located behind the sealing liquid ring to be detected along the extension direction and the mounting ring to be connected with the photosensitive part of the display system. The photosensitive part is located on one side of the cylinder body, and the photosensitive part rotates synchronously with the rotating shaft.

5. The magnetic liquid intelligent sealing system with sealing performance detection function according to claim 1, characterized in that: The detection assembly further comprises a mounting ring, the mounting ring is arranged on two opposite sides of any of the sealing liquid rings, the mounting ring and the sealing liquid ring are spaced apart, the mounting ring is provided with an assembly hole, the assembly hole is interference fit with the rotating shaft, the detection assembly is provided with at least one mounting hole along the circumference of the mounting ring, the axial direction of the mounting hole is parallel to the axial direction of the rotating shaft, the mounting hole is arranged opposite to the sealing liquid ring, and the light guide and the light receiving member are mounted on the rotating shaft by being arranged in the mounting holes; The detection assembly further comprises a light-guiding liquid shielding member, and the liquid shielding member is disposed on one end of the mounting hole located on the side of the sealing liquid ring away from the storage cavity and facing the sealing liquid ring.

6. The magnetic liquid intelligent sealing system with sealing performance detection function according to claim 5, characterized in that: The liquid shielding member has a liquid guiding section protruding toward the sealing liquid ring, a distance is provided between the liquid guiding section and the sealing liquid ring, and the liquid guiding section is arranged opposite to the light guiding member and the light receiving member.

7. The magnetic liquid intelligent sealing system with sealing performance detection function according to claim 6 is characterized in that: The liquid shielding member is further provided with a guide section, which has a horizontal section connected to the liquid guiding section and a vertical section connected to the mounting ring, and the guide section also has an arc section connecting the horizontal section and the vertical section.

8. The magnetic liquid intelligent sealing system with sealing performance detection function according to claim 1, characterized in that: The light guide transmits the optical signal to the light receiving element, and the light guide includes an optical signal transmitting portion and a power supply portion connected to the optical signal transmitting portion.

9. The magnetic liquid intelligent sealing system with sealing performance detection function according to claim 8, characterized in that: The light guide and the light receiving member are fixed to the rotating shaft, the power supply part includes an induction coil, the light guide rotates along with the rotating shaft, and the power supply part cuts the magnetic flux lines to supply power to the optical signal emitting part.

10. A method for detecting the sealing state of a sealing liquid ring, using the magnetic liquid intelligent sealing system with a sealing performance detection function as claimed in claim 1, selecting any of the sealing liquid rings as the sealing liquid ring to be detected, the light guide and the light receiving member are located at two opposite sides of the sealing liquid ring to be detected along the axial direction of the rotating shaft, and the light guide can emit the light signal to the light receiving member, characterized in that: The detection method comprises: Controlling the light guide to emit a light signal; The light receiving element transmits information to the display system; The display system outputs the sealing state of the sealing liquid ring to be detected according to the information; The light receiving element transmitting information to the display system includes: The light receiving element transmits information of receiving the light signal to the display system or the light receiving element transmits the received light signal to the display system; The display system determines the sealing state of the detection sealing liquid ring according to the information, including: If the display system does not receive the information or the optical signal within a preset time, the display system outputs that the sealing state of the sealing liquid ring to be tested is good; The display system receives the information or the light signal intermittently within the preset time, and the display system outputs that the sealing state of the sealing liquid ring to be detected is unstable; The display system continues to receive the information or the light signal within the preset time, and the display system outputs that the sealing state of the sealing liquid ring to be detected is failed.

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