Self-powered wireless transmission intelligent dry gas sealing structure

Abstract

The utility model discloses a self-powered wireless transmission intelligent dry gas sealing structure which comprises a movable ring and a static ring which are matched with each other, and a plurality of magnets are arranged on the movable ring. The static ring is provided with an iron core, an energy storage module and a sensor assembly, the iron core is wound with a coil, the coil is electrically connected with the energy storage module, and the energy storage module is used for supplying power to the sensor assembly. The utility model provides a self-powered wireless transmission intelligent dry gas sealing structure, which aims to solve the problem of monitoring the real running state of dry gas sealing in the prior art and achieve the purposes of monitoring the running state of the dry gas sealing structure in real time on line and improving the monitoring accuracy.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of dry gas seal, concretely relates to a self-sufficient wireless transmission intelligent dry gas seal structure. BACKGROUND

[0002] As a non-contact type shaft end sealing form, dry gas seal technology has become one of the key technologies in the transformation and upgrading of high-end equipment due to its low loss, high efficiency and long service life. At present, it has been successfully widely applied to the fields of precision manufacturing, energy power and aerospace. The stable operation of dry gas seal depends on the balance between the closing force of static pressure and spring load and the opening force generated in the gas film. However, when it is used in alternating harsh conditions such as high speed, high load and high temperature, this balance relationship is easily destroyed, which induces sealing failure and eventually leads to machine failure.

[0003] In engineering applications, only the effective features of the real running state of dry gas seal can be extracted to carry out health management and life assessment of dry gas seal. However, the existing dry gas seal structure can only be monitored by traditional monitoring methods, which requires a large number of wires for power supply and data transmission, and faces the following problems: 1. Traditional monitoring methods generally need to collect signals from the outside, and it is difficult to directly collect the running signals of the dry gas seal body. During system operation, various components are tightly coupled and influence each other, resulting in that the collected dry gas seal signals contain a large amount of signals generated by other components in the equipment; 2. The signal features collected appear nonlinear and complex attenuation with the increase of transmission path, and the transmission is unstable; 3. Due to the closed dry gas seal system, the internal wire laying amount and wiring difficulty are large, and the maintenance and maintenance cost is high; 4. The wired transmission distance is limited, and the line is easy to be physically damaged, which is difficult to meet the actual use requirements in harsh conditions; 5. The penetration hole opened by the external power supply, transmission signal and other lines will damage the integrity of the dry gas seal system itself, affecting its mechanical properties and sealing performance; 6. Poor anti-interference ability, prone to signal quality decline, data transmission error and other problems.

[0004] In summary, the dry gas seal structure at the present stage is difficult to ensure the real-time online monitoring of the running state and the accuracy of responding to the working condition change. UTILITY MODEL CONTENTS

[0005] The utility model provides a kind of self-sufficient wireless transmission intelligent dry gas seal structure, to solve the monitoring problem of the real running state of dry gas seal in prior art, realize the purpose of real-time online monitoring of the running state of dry gas seal structure, improve monitoring accuracy.

[0006] The utility model realizes by the following technical scheme:

[0007] The application discloses a self-powered wireless transmission intelligent dry gas seal structure, which comprises a dynamic ring and a static ring matched with each other, a plurality of magnets are arranged on the dynamic ring, an iron core, an energy storage module and a sensor assembly are arranged on the static ring, a coil is wound on the iron core, the coil is electrically connected with the energy storage module, and the energy storage module is used for supplying power for the sensor assembly.

[0008] In view of the problem of monitoring the real running state of the dry gas seal in the prior art, the application discloses a self-powered wireless transmission intelligent dry gas seal structure, wherein the dynamic ring and the static ring are both the prior art in the field of dry gas seals, and the person skilled in the art should understand that the dynamic ring and the static ring jointly form a sealing pair of the dry gas seal, and the dynamic ring rotates relative to the static ring in the working process; when gas flows from the high-pressure side of the outer diameter of the sealing pair, a micron-level gas film with certain rigidity is generated under the action of the fluid dynamic pressure effect, so that the dynamic ring and the static ring are pushed away, and lubrication is achieved while the good sealing property is ensured.

[0009] The application arranges a plurality of magnets on the dynamic ring, and arranges a matched iron core and a coil on the static ring, so that the magnets rotate with the dynamic ring in the working process of the dry gas seal structure, an electromotive force is generated in the coil on the static ring according to electromagnetic induction, self-power generation is realized, electric energy is stored in the energy storage module, and the energy storage module supplies power for the sensor assembly.

[0010] It can be seen that the application directly installs the sensor on the body of the dry gas seal structure, can monitor the running state of the dry gas seal and components connected thereto in real time, the feature acquisition position is closer to the failure source of the dry gas seal, so that more accurate real signal feature extraction can be realized, and high-quality signal acquisition can be completed. Since the sensor of the application is directly installed on the static ring, the signal transmission path is greatly shortened, the transmission signal loss is reduced, the noise of the surrounding environment is reduced, the signal-to-noise ratio of the monitoring signal is improved, and early and potential failures can be found in time. In addition, the application does not need external power supply, greatly simplifies the structure and installation process of the system, can continuously generate energy in the working process, and is beneficial to monitoring continuity and efficiency.

[0011] The sensor assembly in the application can adopt corresponding sensors according to specific monitoring requirements, which is not limited here. In addition, the energy storage module in the application can be realized by any existing power supply capable of temporarily storing and releasing electric energy, and the person skilled in the art does not have difficulty in realizing it.

[0012] The application can be applied to any dry gas seal structure with a dynamic ring and a static ring in the prior art, and the matched installation / use structure is irrelevant to the application, which is not limited and described here.

[0013] Further, a wireless transmission module is arranged on the static ring, the energy storage module is further used for powering the wireless transmission module, and the wireless transmission module is in signal connection with the sensor assembly.

[0014] In the scheme, the output end of the sensor assembly is connected to the input end of the wireless transmission module, and the monitoring signal is received in real time and transmitted outward through the wireless transmission module. Compared with the prior art, the scheme adopts a wireless transmission technology, reduces the physical connection point, reduces the security risk caused by damage to the physical connection point, reduces the maintenance and replacement demand of the cable, reduces the maintenance cost, can guarantee the continuity of data transmission, and can perform signal acquisition and data transmission without damaging the dry gas seal structure, thereby guaranteeing the integrity and sealing of the structure.

[0015] The wireless transmission module in the scheme can be implemented by using any existing wireless transmission technology, such as a common 4G / 5G / WiFi / infrared / GPRS module, which is not limited herein.

[0016] Further, the magnet is a permanent magnet, so as to guarantee the stability of the application.

[0017] Further, the magnets are annularly and uniformly distributed on the end face of the dynamic ring, so as to guarantee the relative uniformity of the magnetic field change and improve the stability of electromagnetic induction power generation.

[0018] Further, a plurality of first installation grooves are arranged on the end face of the dynamic ring away from the static ring, and the magnets are embedded in the first installation grooves. The first installation grooves provide embedding positions for the magnets, and the magnets and the static ring are prevented from colliding and abrading, thereby avoiding interference of the magnets with the normal work of the dry gas seal structure.

[0019] Further, the sensor assembly includes any one or more of a displacement sensor, a temperature sensor, and a vibration sensor.

[0020] Further, the iron core, the energy storage module, and the sensor assembly are embedded in the end face of the static ring, so as to avoid collision and abrasion with the dynamic ring and avoid interference of the magnets with the normal work of the dry gas seal structure.

[0021] Further, a plurality of annularly distributed second installation grooves, third installation grooves, and fourth installation grooves are arranged on the end face of the static ring away from the dynamic ring, the second installation grooves are used for installing the iron core, the third installation grooves are used for installing the energy storage module, and the fourth installation grooves are used for installing the sensor assembly.

[0022] The second installation grooves, the third installation grooves, and the fourth installation grooves provide installation positions for the iron core, the energy storage module, and the sensor assembly, respectively.

[0023] Further, the static ring end face is further provided with a wiring groove, the wiring groove is communicated with each second mounting groove, third mounting groove and fourth mounting groove, the wiring groove is convenient for arranging the conductor such as power supply conductor and signal line, and then the electrical connection and signal connection among the coil, energy storage module, sensor group and the like are facilitated.

[0024] Further, the second mounting groove is in a cross shape, a receiving cavity is arranged at the groove bottom of the second mounting groove, the iron core comprises a head portion matched with the second mounting groove and a column portion matched with the receiving cavity, and the coil is wound on the column portion.

[0025] The second mounting groove and the head portion in the cross shape prevent the iron core from rotating and ensure the stability of the iron core and the coil.

[0026] Compared with the prior art, the utility model has at least the following advantages and beneficial effects:

[0027] 1. The sensor is directly installed on the body of the dry gas seal structure, the running state of the dry gas seal and components connected therewith can be monitored in real time, the feature acquisition position is closer to the fault source of the dry gas seal, and therefore more accurate real signal feature extraction can be realized, and high-quality signal acquisition can be completed.

[0028] 2. The signal transmission path is greatly shortened, the loss of the transmitted signal is reduced, the noise of the surrounding environment is reduced, the signal-to-noise ratio of the monitoring signal is improved, and early and potential faults can be found in time.

[0029] 3. The utility model does not need external power supply, greatly simplifies the structure and installation process of the system, can continuously generate energy during work, and is beneficial to monitoring continuity and efficiency.

[0030] 4. The utility model can adopt wireless transmission technology, reduces the physical connection point, reduces the safety risk caused by damage of the physical connection point, reduces the maintenance and replacement demand of the cable, reduces the maintenance cost, can ensure the continuity of data transmission, does not need to be perforated, can perform signal acquisition and data transmission without damaging the dry gas seal structure, and ensures the integrity and sealing performance of the structure.

[0031] 5. The utility model has high flexibility, can adapt to different working environments and demands, and can maintain good performance and stability in high-temperature, low-temperature, high-pressure or low-pressure environments. BRIEF DESCRIPTION OF DRAWINGS

[0032] The drawings described herein are used to provide further understanding of the embodiments of the present application, form a part of the present application, and do not constitute a limitation to the embodiments of the present application. In the drawings:

[0033] Figure 1 A structure diagram of a dynamic ring in the embodiment of the present application;

[0034] Figure 2 A structure diagram of a static ring in the embodiment of the present application;

[0035] Figure 3 A structure diagram of an iron core in the embodiment of the present application.

[0036] Markings in the drawings and corresponding names of parts:

[0037] 31-dynamic ring, 321-magnet;

[0038] 51-static ring, 521-iron core, 531-coil, 541-energy storage module, 551-sensor assembly, 561-wireless transmission module, 57-wiring groove. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be further described in detail below with examples and drawings, the schematic embodiment of the present application and its description are only used to explain the present application, and not as a limitation to the present application. In the description of the present application, it should be understood that the orientation or position relationship indicated by terms such as "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inner", "outer" and the like are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the present application.

[0040] Example 1:

[0041] As Figure 1 and Figure 2 shown, a self-sufficient wireless transmission intelligent dry gas seal structure, comprising a dynamic ring 31 and a static ring 51 matched with each other, the dynamic ring 31 having a dynamic pressure groove. A plurality of magnets 321 are arranged on the dynamic ring 31; an iron core 521, an energy storage module 541 and a sensor assembly 551 are arranged on the static ring 51, a coil 531 is wound on the iron core 521, the coil 531 is electrically connected with the energy storage module 541, and the energy storage module 541 is used to supply power to the sensor assembly 551.

[0042] Further comprising a wireless transmission module 561 arranged on the static ring 51, and the energy storage module 541 is further used for powering the wireless transmission module 561; the wireless transmission module 561 is in signal connection with the sensor assembly 551.

[0043] The energy storage module 541 in the embodiment adopts a super capacitor; when the rotating ring rotates at a high speed, part of the generated electric energy is directly used for powering the sensor assembly 551, the wireless transmission module 561 and the like, and if there is excess electric energy, the electric energy is stored in the super capacitor; when the rotating ring rotates at a low speed, the generated electric energy cannot be directly used for powering, and at this time, the super capacitor is used for powering.

[0044] The sensor assembly 551 in the embodiment comprises any one or more of the following: a displacement sensor, a temperature sensor, a vibration sensor. The sensor assembly 551 can be any single sensor or an integrated sensor.

[0045] The rotating ring 31 and the static ring 51 in the embodiment can adopt any existing matched dry gas sealing structure for installation and use, and are pressed by the matched seat body during installation.

[0046] Embodiment 2:

[0047] A self-powered wireless transmission intelligent dry gas sealing structure, based on the embodiment 1, the magnet 321 is a permanent magnet, and a plurality of permanent magnets are evenly distributed in the end surface of the rotating ring 31.

[0048] A plurality of first installation grooves are arranged on the end surface of the rotating ring 31 away from the static ring 51, and the magnet 321 is embedded in the first installation groove.

[0049] The iron core 521, the energy storage module 541 and the sensor assembly 551 are all embedded in the end surface of the static ring 51.

[0050] A plurality of annularly distributed second installation grooves, third installation grooves and fourth installation grooves are arranged on the end surface of the static ring 51 away from the rotating ring 31; the second installation grooves are used for installing the iron core 521, the third installation grooves are used for installing the energy storage module 541, and the fourth installation grooves are used for installing the sensor assembly 551.

[0051] The end surface of the static ring 51 is further provided with a wiring groove 57, and the wiring groove 57 is in communication with each of the second installation grooves, the third installation grooves and the fourth installation grooves.

[0052] In a more preferred embodiment, the second installation groove is in a cross shape, and a receiving cavity is arranged at the groove bottom of the second installation groove; the iron core 521 in the embodiment includes a head portion matched with the second installation groove and a column portion matched with the receiving cavity, and the coil 531 is fixedly wound on the column portion. Figure 3 ​

[0053] The above detailed description of the specific implementation, the purpose of the present application, technical scheme and beneficial effects have been further detailed, should be understood that the above-mentioned only for the specific implementation of the present application has, and is not used to limit the scope of protection of the present application, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included in the scope of protection of the present application.

[0054] It should be noted that in this paper, such as the first and second relationship terms such as only to distinguish one entity or operation with another entity or operation, and does not necessarily require or imply that there is any such actual relationship or order between the entities or operations. Moreover, the term "includes", "contains" or any other variant thereof, is intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements, not only includes those elements, but also includes other elements not explicitly listed, or also includes the elements inherent in such process, method, article or device. In addition, the term "connected" used in this paper, without special explanation, can be directly connected, or indirectly connected via other components.

Claims

1. A self-powered wireless transmission intelligent dry gas seal structure, comprising a dynamic ring (31) and a static ring (51) matched with each other, characterized in that, The moving ring (31) is provided with a plurality of magnets (321); the static ring (51) is provided with an iron core (521), an energy storage module (541) and a sensor assembly (551), the iron core (521) is wound with a coil (531), the coil (531) is electrically connected with the energy storage module (541), and the energy storage module (541) is used for power supply of the sensor assembly (551).

2. A self-powered wireless transmission smart dry gas seal structure according to claim 1, wherein, The wireless transmission module (561) is further arranged on the static ring (51), the energy storage module (541) is further used for power supply of the wireless transmission module (561), and the wireless transmission module (561) is in signal connection with the sensor assembly (551).

3. A self-powered wireless transmission smart dry gas seal structure according to claim 1, wherein, The magnet (321) is a permanent magnet.

4. A self-powered wireless transmission smart dry gas seal structure according to claim 1, wherein, A plurality of the magnets (321) are annularly and uniformly distributed on the end surface of the moving ring (31).

5. A self-powered wireless transmission smart dry gas seal structure according to claim 1, wherein, A plurality of first installation grooves are formed on the end surface of the moving ring (31) away from the static ring (51), and the magnets (321) are embedded in the first installation grooves.

6. A self-powered wireless transmission smart dry gas seal structure according to claim 1, wherein, The sensor assembly (551) comprises any one or more of the following: a displacement sensor, a temperature sensor and a vibration sensor.

7. A self-powered wireless transmission smart dry gas seal structure according to claim 1, wherein, The iron core (521), the energy storage module (541) and the sensor assembly (551) are embedded on the end surface of the static ring (51).

8. A self-powered wireless transmission smart dry gas seal structure according to claim 1, wherein, A plurality of annularly distributed second installation grooves, third installation grooves and fourth installation grooves are formed on the end surface of the static ring (51) away from the moving ring (31), the second installation grooves are used for installation of the iron core (521), the third installation grooves are used for installation of the energy storage module (541), and the fourth installation grooves are used for installation of the sensor assembly (551).

9. A self-sufficient wireless transmission smart dry gas seal structure according to claim 8, characterized in that, The end surface of the static ring (51) is further provided with a wiring groove (57), and the wiring groove (57) is in communication with each of the second installation grooves, the third installation grooves and the fourth installation grooves.

10. A self-sufficient wireless transmission smart dry gas seal structure according to claim 8, wherein, The second installation groove is in a cross shape, a receiving cavity is formed in the bottom of the second installation groove, the iron core (521) comprises a head portion matched with the second installation groove and a column portion matched with the receiving cavity, and the coil (531) is wound on the column portion.

Images