阅读说明：本技术 具有磨损量在线监测功能的密封环 (Sealing ring with abrasion loss online monitoring function ) 是由 陈侃 奉明忠 张车宁 刘伟 李志山 于 2020-12-29 设计创作，主要内容包括：本发明提供一种具有磨损量在线监测功能的密封环,包括石墨环、绝缘基底层、绝缘基底层外表面的敏感栅、敏感栅外表面的保护层,敏感栅包括沿密封环周向设置的周向敏感栅和纵向设置的纵向敏感栅,敏感栅底部的环形为敏感栅连接层,敏感栅连接层底部的环形为PCB基板,敏感栅为导电层,敏感栅连接层为金属层,周向敏感栅和纵向敏感栅的交点为逻辑节。石墨环在运转过程中端面存在磨损,当磨损使得敏感栅的某个触点断裂,从而产生逻辑门信号,通过在PCB基板外部连接电路获得各种二进制编码来实现对机械密封环磨损的在线监测,本发明通过采用信息科技技术,使得补偿环自身变为一个传感敏感元件,从而使得机械密封具有在线磨损量监测的能力。(The invention provides a sealing ring with an abrasion loss online monitoring function, which comprises a graphite ring, an insulating substrate layer, sensitive grids on the outer surface of the insulating substrate layer and a protective layer on the outer surface of the sensitive grids, wherein the sensitive grids comprise circumferential sensitive grids arranged along the circumferential direction of the sealing ring and longitudinal sensitive grids arranged longitudinally, the ring at the bottom of each sensitive grid is a sensitive grid connecting layer, the ring at the bottom of each sensitive grid connecting layer is a PCB (printed circuit board) substrate, each sensitive grid is a conductive layer, each sensitive grid connecting layer is a metal layer, and the intersection points of the circumferential sensitive grids and the longitudinal sensitive grids are logic nodes. The end face of the graphite ring is abraded in the operation process, when the graphite ring is abraded, a certain contact of the sensitive grid is broken, so that a logic gate signal is generated, various binary codes are obtained by connecting a circuit outside a PCB substrate to realize online monitoring of abrasion of the mechanical sealing ring.)

1. The utility model provides a sealing ring with wearing and tearing volume on-line monitoring function which characterized in that: the novel sensor comprises a graphite ring (1), an insulating substrate layer (2) on the outer surface of the graphite ring (1), a sensitive grid (3) on the outer surface of the insulating substrate layer (2), and a protective layer (4) on the outer surface of the sensitive grid (3), wherein the sensitive grid (3) comprises a circumferential sensitive grid (5) arranged along the circumferential direction of a sealing ring and a longitudinal sensitive grid (6) arranged longitudinally, the bottom of the sensitive grid (3) is provided with a sensitive grid connecting layer (7) in an annular shape, the bottom of the sensitive grid connecting layer (7) is provided with a PCB (printed circuit board) substrate (8) in an annular shape, the sensitive grid (3) is a conductive layer, the sensitive grid connecting layer (7) is a metal layer, and the intersection point of the circumferential sensitive grid (5).

2. The seal ring with the wear amount on-line monitoring function according to claim 1, characterized in that: the end face of the graphite ring is abraded in the running process, when the graphite ring is abraded, a certain contact of the sensitive grid (3) is broken, so that a logic state signal is changed, and various binary codes are obtained by connecting a circuit outside the PCB substrate (8) to realize online monitoring on the abrasion of the mechanical sealing ring.

3. The seal ring with the wear amount on-line monitoring function according to claim 1, characterized in that: the preparation method of the sealing ring comprises the following steps: the outer insulating stratum basale (2) of spraying in graphite ring (1), the conducting layer that sets up along sealing ring circumference and vertical respectively at insulating stratum basale (2) outer spraying is as sensitive bars (3), spraying protective layer (4) outside the conducting layer, connects through the welding becket between graphite ring and PCB base plate (8).

4. The seal ring with the wear amount on-line monitoring function according to claim 1, characterized in that: the protective layer (4) is made of PEEK or PTFE.

5. The seal ring with the wear amount on-line monitoring function according to claim 1, characterized in that: the sensitive grid (3) is made of metal selected from copper, gold and silver.

6. The seal ring with the wear amount on-line monitoring function according to claim 1, characterized in that: the circumferential distance between the circumferential sensitive grids (5) in the circumferential direction is 0.1 micrometer to 1 millimeter.

7. The seal ring with the wear amount on-line monitoring function according to claim 1, characterized in that: 4-360 longitudinal sensitive grids (6) are uniformly distributed in the circumferential direction.

8. The seal ring with the wear amount on-line monitoring function according to claim 1, characterized in that: the total thickness of the insulating substrate layer (2), the sensitive grid (3) and the protective layer (4) is not more than 0.5 mm.

9. The seal ring with the wear amount on-line monitoring function according to claim 1, characterized in that: the insulating substrate layer (2) is a material which is electrically non-conductive and can be connected with a conductive metal.

10. The seal ring with the wear amount on-line monitoring function according to claim 1, characterized in that: the insulating substrate layer (2) is quartz.

Technical Field

The invention belongs to the technical field of mechanical sealing, and particularly relates to a sealing ring with an abrasion loss online monitoring function.

Background

Mechanical seals are commonly used to seal high temperature, toxic, high pressure process media, and act as a barrier to the process media and the environment, protecting the environment and humans from threats. Thus, the reliability of the mechanical seal and its own health importance are self evident. It becomes important to monitor the condition of the mechanical seal and predict its life.

Currently, all mechanical seal products in the world do not have condition monitoring capabilities of their own. Mechanical sealing performance is acquired by opening holes on a product or arranging an auxiliary structure and additionally arranging a sensor. The on-line monitoring of the wear of the end faces of the mechanical seal is achieved without a method.

Disclosure of Invention

In view of the above-described drawbacks of the prior art, an object of the present invention is to solve the problems and provide a seal ring having an online wear amount monitoring function.

In order to achieve the purpose, the technical scheme of the invention is as follows:

a sealing ring with an abrasion loss online monitoring function comprises a graphite ring 1, an insulating substrate layer 2 on the outer surface of the graphite ring 1, a sensitive grid 3 on the outer surface of the insulating substrate layer 2, and a protective layer 4 on the outer surface of the sensitive grid 3, wherein the sensitive grid 3 comprises a circumferential sensitive grid 5 and a longitudinal sensitive grid 6, the circumferential sensitive grid 5 and the longitudinal sensitive grid 6 are arranged along the circumferential direction of the sealing ring, the sensitive grid connecting layer 7 is arranged at the bottom of the sensitive grid 3 in an annular mode, a PCB substrate 8 is arranged at the bottom of the sensitive grid connecting layer 7 in an annular mode, the sensitive grid 3 is a conductive layer, the sensitive grid connecting layer 7 is a metal layer, and the intersection point of the circumferential sensitive.

As a preferred mode, the end face of the graphite ring is abraded in the running process, when the end face is abraded, a certain contact of the sensitive grid 3 is broken, so that a logic state signal is changed, and various binary codes are obtained by connecting a circuit outside the PCB substrate 8 to realize online monitoring of abrasion of the mechanical sealing ring.

Preferably, the preparation method of the sealing ring comprises the following steps: the outer layer of the graphite ring 1 is coated with an insulating basal layer 2, the outer layer of the insulating basal layer 2 is coated with a conductive layer which is respectively arranged along the circumferential direction and the longitudinal direction of the sealing ring and is used as a sensitive grid 3, the conductive layer is coated with a protective layer 4, and the graphite ring and the PCB substrate 8 are connected through a welding metal ring.

Preferably, the material of the protective layer 4 is polyetheretherketone PEEK or polytetrafluoroethylene PTFE.

Preferably, the sensitive grid 3 material is selected from copper, gold and silver metal.

Preferably, the circumferential sensitive grids 5 are spaced from each other in the circumferential direction by 0.1 micrometer to 1 millimeter. Preferably 1 micron.

Preferably, 4-360 longitudinal sensitive grids 6 are uniformly distributed in the circumferential direction.

Preferably, the sum of the thicknesses of the insulating substrate layer 2, the sensitive grid 3 and the protective layer 4 is not more than 0.5 mm.

Preferably, the insulating base layer 2 is a material which is electrically non-conductive and can be connected to a conductive metal.

Preferably, the insulating base layer 2 is quartz.

The invention has the beneficial effects that: the invention changes the function of the mechanical seal compensation ring, and not only maintains the function of the original mechanical seal compensation ring, but also changes the compensation ring into a sensing sensitive element by adopting the information technology, thereby ensuring that the mechanical seal has the capability of monitoring the online abrasion loss.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

the structure comprises a graphite ring 1, an insulating substrate layer 2, a sensitive grid 3, a protective layer 4, a circumferential sensitive grid 5, a longitudinal sensitive grid 6, a sensitive grid connecting layer 7, a PCB substrate 8 and a logic node 9.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.

The embodiment provides a sealing ring with an abrasion loss online monitoring function, which comprises a graphite ring 1, an insulating substrate layer 2 on the outer surface of the graphite ring 1, a sensitive grid 3 on the outer surface of the insulating substrate layer 2, and a protective layer 4 on the outer surface of the sensitive grid 3, wherein the sensitive grid 3 comprises a circumferential sensitive grid 5 and a longitudinal sensitive grid 6, the circumferential sensitive grid 5 is arranged along the circumferential direction of the sealing ring, the longitudinal sensitive grid 6 is arranged longitudinally, the ring at the bottom of the sensitive grid 3 is a sensitive grid connecting layer 7, the ring at the bottom of the sensitive grid connecting layer 7 is a PCB (printed circuit board) substrate 8, the sensitive grid 3 is a conductive layer, the sensitive grid connecting layer 7 is a metal layer, and the intersection.

The end face of the graphite ring is abraded in the running process, when the graphite ring is abraded, a certain contact of the sensitive grid 3 is broken, so that a logic state signal is changed, and various binary codes are obtained by connecting a circuit outside the PCB substrate 8 to realize online monitoring on the abrasion of the mechanical sealing ring. For example: each transverse grid is provided with a number, each longitudinal grid is provided with a number, each node is provided with a number, Boolean value codes formed by measuring the states of all nodes at each time are different, each node is worn, the code values correspondingly change, and the change of the codes reflects the states of all nodes, so that the wear state of the ring body is reflected.

The preparation method of the sealing ring comprises the following steps: the outer layer of the graphite ring 1 is coated with an insulating basal layer 2, the outer layer of the insulating basal layer 2 is coated with a conductive layer which is respectively arranged along the circumferential direction and the longitudinal direction of the sealing ring and is used as a sensitive grid 3, the conductive layer is coated with a protective layer 4, and the graphite ring and the PCB substrate 8 are connected through a welding metal ring.

The material of the protective layer 4 is polyetheretherketone PEEK or polytetrafluoroethylene PTFE.

The sensitive grid 3 material is selected from copper, gold and silver metal.

The circumferential distance between the circumferential sensitive grids 5 in the circumferential direction is 0.1 micrometer to 1 millimeter. The maximum resolution of the wear amount detection of the present invention can be 1 um.

4-360 longitudinal sensitive grids 6 are uniformly distributed in the circumferential direction.

The total thickness of the insulating substrate layer 2, the sensitive grid 3 and the protective layer 4 is not more than 0.5 mm.

The insulating base layer 2 is a material which is electrically non-conductive and can be connected to a conductive metal. Preferably, the insulating base layer 2 is quartz.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.