CN110486474B - Mechanical sealing device with function component mounting structure - Google Patents
Mechanical sealing device with function component mounting structure Download PDFInfo
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- CN110486474B CN110486474B CN201910778492.XA CN201910778492A CN110486474B CN 110486474 B CN110486474 B CN 110486474B CN 201910778492 A CN201910778492 A CN 201910778492A CN 110486474 B CN110486474 B CN 110486474B
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Abstract
The invention provides a mechanical sealing device with a functional component mounting structure, which is characterized in that a deformable retainer is arranged on the basis of the traditional mechanical sealing device, the retainer is in a natural state and a mounting state, the retainer is changed from the natural state to the mounting state when being acted by external factors, the retainer always has a tendency of being converted to the natural state when being in the mounting state, the functional component is pushed by utilizing the change tendency, so that the functional component is fixed between the retainer and a static ring, and the functional component such as a sensor, an actuator and the like is mounted on the static ring in the mechanical sealing device, so that the mechanical sealing device can be monitored and regulated, and the problem that the functional component cannot be mounted in the traditional mechanical sealing device due to self materials and structural design is solved.
Description
Technical Field
The invention relates to the field of mechanical sealing equipment, in particular to a mechanical sealing device with a functional component mounting structure.
Background
A mechanical seal is an end face dynamic seal device that requires reduced or eliminated frictional wear of friction pairs (formed by the opposite end faces and the fluid medium in relative motion) to extend life while maintaining low or no leakage.
Along with the improvement of the reliability requirements of industrial application, the intellectualization of the mechanical seal becomes one of the important technical features of the next generation mechanical seal. Some high-performance monitoring and regulation functions require installing components with corresponding functions on the sealing ring, such as a sensor for detecting various physical signals on the sealing end surface of the sealing ring, or an actuator for fine adjustment of the sealing ring, and specific technical problems faced by installing the components include:
(1) The problem of the installation structure form caused by the sealing ring material. Mechanical seal rings are made of a wide variety of materials and are selected according to the physical properties required for their operation so as not to be altered at will, typically metals, graphite, ceramics, etc., where some materials are difficult to machine in some common structural forms due to their own properties (e.g., difficult to machine threads on graphite materials).
(2) Spatial coordination problems. The mechanical seal is compact, so that the functional components mounted on the mechanical seal and the structure added for mounting the functional components allow a very limited space to be taken up in the design.
(3) Reliability and assembly and disassembly manufacturability. Some laboratory-stage mounting methods use temporary means to mount the functional component on the seal ring, which is less reliable, lacks repeatability in mounting, is prone to damage to the functional component or seal during disassembly, and cannot be transplanted into industrial applications.
Disclosure of Invention
In view of this, it is necessary to provide a mechanical seal device having a functional component mounting structure, in order to solve the problem that it is difficult to mount additional components in the conventional mechanical seal device.
The above purpose is achieved by the following technical scheme:
A mechanical seal having a functional component mounting structure, comprising: the sealing assembly comprises a static ring, the sealing assembly is sleeved on the rotating shaft, and the functional assembly is arranged on the static ring; the retainer is arranged between the functional component and the rotating shaft, the retainer has a natural state and an installation state, the retainer is changed from the natural state to the installation state when being acted by external factors, the retainer always has a tendency of being converted to the natural state when being positioned in the installation state, and the functional component is pushed by utilizing the change tendency, so that the functional component is fixed between the retainer and the stationary ring.
In one embodiment, the stationary ring comprises a first surface and a second surface, both of which are located inside the stationary ring and perpendicular to each other; the functional component is arranged on the first surface, and the second surface can limit the displacement of the retainer along the axial direction or the radial direction of the static ring.
In one embodiment, the first surface is provided with a first groove body, the functional component is arranged in the first groove body, and the first groove body can limit the displacement of the functional component along the axial direction and/or the circumferential direction of the static ring.
In one embodiment, the retainer is provided with a second groove body, the functional component is arranged in the second groove body, and the second groove body can limit the displacement of the functional component along the axial direction and/or the circumferential direction of the stationary ring.
In one embodiment, the retainer comprises a retainer ring and a packing ring, the stationary ring further comprises a third surface, the first, second and third surfaces enclose a mounting groove, the retainer ring contacts the second surface and forms radial positioning, and the retainer ring is provided with a positioning structure and forms radial positioning for the functional component; the packing ring is in contact with the third surface, is made of flexible materials and pushes the functional component through the retaining ring by means of self elastic deformation.
In one embodiment, the retaining ring is provided with a wire slot or hole.
In one embodiment, a lead groove or a lead hole is arranged on the static ring seat in the sealing assembly.
In one embodiment, the external factor is any combination of one or more of external force action, temperature field and electric field.
In one embodiment, the retainer is nylon.
In one embodiment, a pressure test element is arranged between the holder and the functional component.
In one embodiment, the pressure sensing element comprises pressure sensitive paper.
In one embodiment, the functional component is one or any combination of several of an acoustic emission sensor, an acceleration sensor, a temperature sensor, a heating/cooling device, an electro-deformation device, a thermo-deformation device and an ultrasonic generation device.
In one embodiment, the number of functional components is at least two. In one of the embodiments of the present invention,
The beneficial effects of the invention are as follows:
The invention provides a mechanical sealing device with a functional component mounting structure, which is characterized in that a deformable retainer is arranged on the basis of the traditional mechanical sealing device, the retainer is in a natural state and a mounting state, the retainer is changed from the natural state to the mounting state when being acted by external factors, the retainer always has a tendency of being converted to the natural state when being in the mounting state, the functional component is pushed by utilizing the change tendency, so that the functional component is fixed between the retainer and a static ring, and the functional component such as a sensor, an actuator and the like is mounted on the static ring in the mechanical sealing device, so that the mechanical sealing device can be monitored and regulated, and the problem that the functional component cannot be mounted in the traditional mechanical sealing device due to self materials and structural design is solved.
Drawings
Fig. 1 is a schematic structural view of a mechanical seal device with a functional component mounting structure according to a first embodiment of the present invention;
FIG. 2 is a schematic view showing a partial structure of a mechanical seal device with a functional component mounting structure according to an embodiment of the present invention in another direction;
FIG. 3 is a schematic view showing a natural structure of a retaining ring in a mechanical seal device with a functional component mounting structure according to an embodiment of the present invention;
FIG. 4 is a schematic view of a part of a stationary ring in a mechanical seal device with a functional component mounting structure according to an embodiment of the present invention;
Fig. 5 is a schematic structural diagram of a mechanical seal device with a functional component mounting structure according to a second embodiment of the present invention;
fig. 6 is a schematic structural view of a retaining ring in a mechanical seal device with a functional component mounting structure according to a second embodiment of the present invention.
Wherein:
A stationary ring 100; a first surface 110; a first groove 111; a first protrusion 112; a second surface 120; a third surface 130; a third protrusion 131; a holder 200; a second tank 201; a retaining ring 210; a lead hole 211; a packing ring 220; a functional component 300; pressure sensitive paper 400; a stationary ring seat 500; a wire groove 510; a moving ring 600; a sleeve 700; a lead 800.
Detailed Description
The present invention will be further described in detail below with reference to examples, which are provided to illustrate the objects, technical solutions and advantages of the present invention. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The numbering of components herein, such as "first," "second," etc., is used merely to distinguish between the described objects and does not have any sequential or technical meaning. The term "coupled" as used herein includes both direct and indirect coupling (coupling), unless otherwise indicated. In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In order to meet the requirements of modern industrial production, the existing mechanical sealing structure needs to attach various functional components, such as a monitoring component, a regulating component and the like, to the sealing ring of the mechanical sealing, but among the existing mechanical sealing devices, the following difficulties exist to make the functional components difficult to install: 1. part of materials in the mechanical sealing equipment are difficult to process into common mechanical mounting structures such as graphite, ceramic and the like; 2. the space available for the functional components to be installed in the mechanical sealing device is limited; 3. some experimental functional components are less reliable to install and cannot be applied to industrial production.
In order to solve the above problems, the present invention provides a mechanical sealing device with a functional module mounting structure, as shown in fig. 2, which includes a sealing module, a functional module 300 and a retainer 200, wherein the sealing module includes a stationary ring 100, the sealing module is sleeved on a rotating shaft, and the functional module 300 is disposed on the stationary ring 100; the retainer 200 is disposed between the functional module 300 and the rotating shaft, and the retainer 200 is capable of being deformed and continuously pushing the functional module 300 after being deformed, so that the functional module 300 is fixed between the retainer 200 and the stationary ring 100. Through the design, the sealing ring in the existing mechanical sealing equipment is subjected to limited processing, the retainer 200 is arranged in the gap by utilizing the inherent gap between the static ring 100 and the rotating shaft in the sealing ring, and the functional component 300 and the sealing ring are relatively fixed through the deformation of the retainer 200. The retainer 200 is used for fixing the functional component 300, so that the structure is simple, the fixing is reliable, and occupied space and modification on mechanical sealing equipment are small.
Preferably, as shown in fig. 1 and 2, the stationary ring 100 includes a first surface 110 for mounting the functional assembly 300, and a second surface 120 for positioning the holder 200; the first surface 110 and the second surface 120 are both disposed on the inner side of the stationary ring 100, i.e. the side of the stationary ring 100 close to the rotating shaft; the first surface 110 and the second surface 120 are disposed perpendicular to each other. The end surface of the retainer 200 is closely attached to the second surface 120, and at the same time, the side surface perpendicular to the end surface of the retainer 200 continuously pushes the functional component 300, and the functional component 300 is pushed by the retainer 200 and is kept relatively fixed to the stationary ring 100.
Preferably, as shown in fig. 2 and fig. 4, the first surface 110 is provided with a first groove body 111, the functional component 300 is disposed in the first groove body 111, and the first groove body 111 can perform a limiting effect on the functional component 300, and the limiting includes limiting the functional component 300 along the axial direction and/or the circumferential direction of the static ring 100 by multiple sides of the first groove body 111.
Preferably, as shown in fig. 2 and 3, the retainer 200 is provided with a second groove 201, the functional component 300 is disposed in the second groove 201, and the second groove 201 can perform a limiting effect on the functional component 300, where the limiting effect includes limiting the functional component 300 along the axial direction and/or the circumferential direction of the static ring 100 by multiple sides of the second groove 201.
Preferably, as shown in fig. 5, the stationary ring 100 further includes a third surface 130 in addition to the first surface 110 and the second surface 120, and the first surface 110, the second surface 120 and the third surface 130 enclose a mounting groove, wherein the second surface 120 serves as a bottom surface of the mounting groove, and the first surface 110 and the third surface 130 serve as two side surfaces of the mounting groove. The retainer 200 is disposed in the mounting groove, the retainer 200 includes a retainer ring 210 and a packing ring 220, the retainer ring 210 contacts the second surface 120 (i.e., the bottom surface of the mounting groove) and forms a radial positioning, and a positioning structure is disposed on the retainer ring 210 to form a radial positioning for the functional assembly 300; the packing ring 220 is in contact with the third surface 130 (i.e. one side of the installation groove), is supported by a flexible material, and applies a force to the retaining ring 210 by virtue of self elastic deformation, so that the retaining ring 210 pushes the functional component 300 and enables the functional component 300 to cling to the first surface 110 (i.e. the other side of the installation groove), thereby realizing axial positioning of the installation groove. The radial direction, the axial direction, and the circumferential direction are described above and below, and unless explicitly stated, the radial direction, the axial direction, and the circumferential direction of the rotating shaft (the directions of the rotating shaft and the stationary ring 100 are the same) in the mean mechanical seal device.
Preferably, as shown in fig. 5, the retaining ring 210 is provided with a wire groove or hole 211. For some functional components 300, it is necessary to connect with external devices through wires or other solid cables, and in order to facilitate the arrangement of the cables, a wire slot or wire hole 211 is formed in the retaining ring 210 for the cables to pass through.
Preferably, as shown in fig. 2, the stationary ring holder 500 is provided with a wire groove 510 or a wire hole. For some functional components 300, it is necessary to connect with an external device through a lead 800 or other solid cables, and in order to facilitate the arrangement of the cables, a lead slot 510 or a lead hole is formed in the stationary ring seat 500 for the cables to pass through.
Preferably, as shown in fig. 3, the holder 200 has a natural state and an installation state, and in general, the holder 200 is in the natural state, so that the holder 200 is converted from the natural state to the installation state when being subjected to external factors, and in general, the overall size of the holder 200 in the installation state is smaller than that in the natural state; when the holder 200 is in the installed state, there is always a tendency to shift to the natural state, and the holder 200 gradually shifts from the installed state to the natural state when no external factors affect it.
Preferably, the external factors include one or any combination of several of external force action, temperature field and electric field. Besides the above factors, other means capable of promoting the shape or physicochemical property change of the object, such as magnetic field, illumination, etc., can be applied to the present invention.
Preferably, the holder is made of nylon material. Nylon has low rigidity and certain elasticity, and has high rigidity and heat resistance. Other common elastic materials, such as rubber, and some polymeric elastic materials, can be used in the present invention.
Preferably, as shown in fig. 2, a pressure test element is provided between the holder 200 and the functional module 300. Since the retainer 200 applies a force to the functional module 300 by deforming itself, the force needs to be controlled to some extent, and thus the force needs to be measured. A pressure test element is disposed between the functional module 300 and the holder 200, so that the force of the holder 200 to the functional module 300 can be measured, and the adjustment of the holder 200 or the functional module 300 is facilitated.
Preferably, as shown in fig. 2, the pressure test element comprises a pressure sensitive paper 400. The pressure sensitive paper 400 undergoes a color change upon being subjected to a specific pressure, by which the pressure applied at different positions of the functional module 300 can be determined. There are two force measuring modes of the pressure test element, one is real-time monitoring and synchronous output result, such as disposing processing sensors or strain gauges on the holder 200 and the functional module 300, the method has the advantage of real-time monitoring, but the installation space between the holder 200 and the functional module 300 is very limited, and the pressure test element in the method is difficult to install; one is to observe the result after the test, such as providing the pressure sensitive paper 400 on the holder 200 and the functional module 300, removing the holder 200 after the installation is completed, and observing the color change of the pressure sensitive paper 400 and measuring the pressure. The method is simple to install, but cannot measure the real pressure condition during installation, and the theoretical value can be obtained after multiple times of experimental installation and multiple times of pressure measurement.
Preferably, the functional component is one or any combination of a plurality of acoustic emission sensors, acceleration sensors, temperature sensors, heating/cooling devices, electro-deformation devices, thermal deformation devices and ultrasonic generation devices. The acoustic emission sensor, the acceleration sensor and the temperature sensor are monitoring sensors which are used for monitoring some physical parameters of the sealing ring in the mechanical sealing equipment; the heating/cooling device, the electro-deformation device, the thermo-deformation device and the ultrasonic generating device are action elements which are used for changing the physical parameters or physicochemical properties of the sealing ring.
Embodiment one:
As shown in fig. 1 to 4, fig. 1 is a partial sectional view of a mechanical seal device with a functional module mounting structure provided by the present invention when a holder 200 and a functional module 300 are not mounted. Wherein the stationary ring 100 is provided with a functional assembly 300 for easy installation, the stationary ring 100 comprises a larger inner diameter section and a smaller inner diameter section, the inner side of the larger inner diameter section is a first surface 110, and the end surface of the smaller inner diameter section is a second surface 120. The rest of the mechanical seal is the same as a general mechanical seal, such as the moving ring 600, the shaft sleeve 700, etc.
The retainer 200 is of an annular structure and is sleeved on the rotating shaft and the shaft sleeve 700, and the inner diameter of the retaining ring 210 is slightly larger than the outer diameter of the shaft sleeve 700, so that a certain gap is kept between the two without contact. The end face of the holder 200 contacts the second surface 120 of the stationary ring 100 and is axially positioned such that the holder 200 has the correct axial position while restricting movement of the holder 200 in the axial direction to the left in the drawing. The outer side of the ring-shaped retainer 200 pushes against the functional element 300 and presses the functional element 300 against the first surface 110, holding the functional element 300 in place with the stationary ring 100. The first surface 110 of the stationary ring 100 is provided with a first groove 111 for positioning the functional component 300; the retainer 200 is provided with a second groove 201, and the second groove 201 is used for installing a pressure test element and assisting in positioning the functional assembly 300.
For the first tank 111, it may be a semi-open tank or a closed tank, and since the processing of the tank is usually completed by milling, the first tank 111 has a planar section located at the middle of the tank and cylindrical sections located at both ends of the tank. For the semi-through groove, the unidirectional positioning of the functional component 300 along the axial direction is realized by the side surface of the plane section of the first groove body 111, and the radial positioning of the functional component 300 is realized by the bottom of the first groove body 111. For the closed groove, the two-way positioning of the functional component 300 along the axial direction is realized by means of two side surfaces of the plane section of the first groove body 111, and the radial positioning of the functional component 300 is realized by means of the bottom of the first groove body 111. It should be noted that the closed slot has a certain requirement on the size of the functional component 300, when the size of the functional component 300 in a certain direction is equal to the slot width, the axial bidirectional positioning can be realized, and if the size of the functional component 300 is smaller than the slot width, the axial unidirectional positioning can be performed only through one side of the slot body. The length direction of the first groove 111 is perpendicular to the axial direction of the rotating shaft, the length direction of the first groove 111 may be parallel to the axial direction of the rotating shaft, and the parallel type positioning function is performed on the functional module 300 along the circumferential direction. It should be noted that, since the first groove 111 is cut with a very limited amount of material, such structural modification is believed to have little effect on the mass distribution of the seal ring and the balance characteristics of the seal ring.
The retainer 200 is provided with a second groove 201, and the second groove 201 is used for positioning the functional component 300 during installation. And the pressure test element is disposed in the second tank 201. The holder 200 is made of nylon, which has low rigidity and high strength and heat resistance, and has a certain heat resistance requirement for the holder 200 because the temperature of the stationary ring 100 increases when the rotating shaft is operated, and also has a certain elasticity, so that the nylon can be naturally restored to a natural state or has a tendency to be converted to a natural state after being deformed by force to an installation state.
The shapes of the first and second grooves 111, 201 should be adjusted appropriately according to the shape of the functional module 300, for example, when the measurement surface of the functional module 300 is a plane, the bottom surface of the first groove 111 should also be a plane; when the measurement surface of the second gear function assembly 300 is an arc surface, the bottom surface of the first groove 111 should also be an arc surface. The number of the first and second slots 111 and 201 should also be adjusted according to the number of the functional modules 300.
The holder 200 is not a solid of revolution in nature, and is composed of a multi-segment body structure and a link structure, each segment body structure being a part of a certain cylindrical solid of revolution. When the holder 200 is in the installed state and is installed in the mechanical sealing device, it cannot be restored to the natural state due to the pressing action of the functional module 300, so that the shape of the holder 200 is approximately similar to a circular ring shape, and thus, it is well matched with other structures in the mechanical sealing device. The elastic deformation of the retainer 200 in operation is a source of stable, predictable retention force for the functional component 300.
In this embodiment, a push ring is further disposed between the stationary ring seat 500 and the stationary ring 100, and the stationary ring 100 is floatingly mounted on the stationary ring seat 500 by the push ring. The functional assembly 300 includes three form-sound emitting sensors for measuring acoustic emission signals generated by the end friction pair. The pressure sensing element is pressure sensitive paper 400, and the pressure sensitive paper 400 can generate corresponding color change according to the pressure.
When the functional component 300 is installed, firstly, the pressure sensitive paper 400 and the acoustic emission sensor are placed in the second groove 201 on the holder 200, the holder 200 made of nylon material is deformed by applying external force, and the holder 200, together with the pressure sensitive paper 400 and the acoustic emission sensor, is placed inside the static ring 100, so that the acoustic emission sensor is positioned in the first groove 111, and then the external force is removed. The whole mechanical seal device is heated to 130 ℃ to simulate the temperature of the mechanical seal device when in operation, the mechanical seal device is stopped for disassembly after a period of operation, the pressure sensitive paper 400 is taken out, the pressure information recorded by the pressure sensitive paper 400 is recorded, and the retainer 200 is adjusted according to the pressure information. The above actions are repeated until the pressure and uniformity meet the requirements and remain stable. An unread piece of pressure sensitive paper 400 remains between the holder 200 and the functional module 300 after installation, which is used to read pressure data when the mechanical seal is subsequently serviced.
For some holders 200 that are difficult to change their shape with external force, the principle of thermal expansion and contraction may be used to insert the holder 200 into the interior of the mechanical seal device by cooling the holder 200 and/or warming the mechanical seal device as a whole.
Embodiment two:
as shown in fig. 5 and 6, in comparison with the first embodiment, the second embodiment does not perform the material removing process on the stationary ring 100, that is, the stationary ring 100 does not have the first groove 111 thereon. Correspondingly, the stationary ring 100 has a first surface 110, a second surface 120 and a third surface 130 (note that in the first embodiment and the second embodiment, the first surface 110 and the second surface 120 refer to different surfaces), the first surface 110 is perpendicular to the axis of the rotating shaft, the second surface 120 is parallel to the axis of the rotating shaft, the third surface 130 is parallel to the first surface 110, and the first, second and third surfaces 130 surround to form a mounting groove. In order to form the first surface 110 and the third surface 130, the stationary ring 100 has corresponding protruding portions, including a first protrusion 112 located on the first surface 110 and a third protrusion 131 located on the third surface 130, where the first protrusion 112 is used to expand the mounting surface of the functional module 300 to enhance the efficacy of the functional module 300, and the third protrusion 131 is used to assist in positioning the functional module 300.
The retainer 200 includes a retainer ring 210 and a packing ring 220, wherein the packing ring 220 is made of a relatively low stiffness material that is capable of being elastically deformed to provide a retaining force. The retaining ring 210 is provided with a positioning groove to radially position the functional component 300, the retaining ring 210 pushes the functional component 300 towards the end surface of the functional component 300, and transmits the retaining force of the packing ring 220 to the functional component 300, so that the functional component 300 is tightly attached to the first surface 110 and is fixed relative to the stationary ring 100. The retaining ring 210 is provided with a lead hole 211 for the signal line of the functional module 300 to pass through.
The mounting manner of the second embodiment is as follows: the pressure sensitive paper 400 and the functional unit 300 are first placed in sequence in the retaining ring 210 and positioned by the positioning groove on the retaining ring 210, and the pressure sensitive paper 400 is located between the functional unit 300 and the retaining ring 210. The functional module 300, the retaining ring 210 and the packing ring 220 are then installed in the installation groove on the stationary ring 100, the external force is removed after the installation, and the first protrusion 112, the functional module 300, the pressure sensitive paper 400, the retaining ring 210, the packing ring 220 and the third protrusion 131 are sequentially installed from left to right as shown in the figure. The whole mechanical seal device is heated to 130 ℃ to simulate the temperature of the mechanical seal device when in operation, the mechanical seal device is stopped for disassembly after a period of operation, the pressure sensitive paper 400 is taken out, the pressure information recorded by the pressure sensitive paper 400 is recorded, and the retainer 200 is adjusted according to the pressure information. The above actions are repeated until the pressure and uniformity meet the requirements and remain stable. An unread piece of pressure sensitive paper 400 remains between the holder 200 and the functional module 300 after installation, which is used to read pressure data when the mechanical seal is subsequently serviced.
For some holders 200 that are difficult to change their shape with external force, the principle of thermal expansion and contraction may be used to insert the holder 200 into the interior of the mechanical seal device by cooling the holder 200 and/or warming the mechanical seal device as a whole.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (12)
1. A mechanical seal device having a functional component mounting structure, comprising: the sealing assembly comprises a static ring, the sealing assembly is sleeved on the rotating shaft, and the functional assembly is arranged on the static ring; the retainer is arranged between the functional component and the rotating shaft, the retainer comprises a retainer ring, the retainer is of an annular structure and sleeved on the rotating shaft and the shaft sleeve, the inner diameter of the retainer ring is slightly larger than the outer diameter of the shaft sleeve, a certain gap is kept between the retainer ring and the shaft sleeve without contact, the retainer is in a natural state and an installation state, the retainer is changed from the natural state to the installation state when being acted by external factors, always has a tendency of being converted to the natural state when being in the installation state, and pushes the functional component by utilizing the conversion tendency, so that the functional component is fixed between the retainer and the stationary ring.
2. The mechanical seal with functional component mounting feature of claim 1 wherein the stationary ring includes a first surface and a second surface, the first surface and the second surface both being inside the stationary ring and perpendicular to each other; the functional component is arranged on the first surface, and the second surface can limit the displacement of the retainer along the axial direction of the static ring.
3. The mechanical seal with a functional component mounting structure according to claim 2, wherein a first groove body is provided on the first surface, the functional component is provided in the first groove body, and the first groove body can restrict displacement of the functional component in the axial direction and/or the circumferential direction of the stationary ring.
4. The mechanical seal device with a function component mounting structure according to claim 2, wherein a second groove body is provided on the holder, the function component is provided in the second groove body, and the second groove body can restrict displacement of the function component in the axial direction and/or the circumferential direction of the stationary ring.
5. The mechanical seal with functional component mounting feature of claim 1 wherein the retaining ring is provided with a wire slot or wire hole.
6. The mechanical seal with functional module mounting structure of claim 1, wherein a wire slot or a wire hole is provided on a stationary ring seat in the seal assembly.
7. The mechanical seal device with a functional component mounting structure according to claim 1, wherein the external factor is one or any combination of several of an external force action, a temperature field, and an electric field.
8. The mechanical seal with functional module mounting structure of claim 1, wherein the retainer is nylon.
9. The mechanical seal with functional component mounting structure according to claim 1, wherein a pressure test element is provided between the holder and the functional component.
10. The mechanical seal with functional component mounting feature of claim 9 wherein the pressure test element comprises pressure sensitive paper.
11. The mechanical seal device with a functional component mounting structure according to claim 1, wherein the functional component is one or any combination of several of an acoustic emission sensor, an acceleration sensor, a temperature sensor, a heating/cooling device, an electro-deformation device, a thermo-deformation device, and an ultrasonic generation device.
12. The mechanical seal with functional component mounting feature of claim 11 wherein the number of functional components is at least two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910778492.XA CN110486474B (en) | 2019-08-22 | Mechanical sealing device with function component mounting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910778492.XA CN110486474B (en) | 2019-08-22 | Mechanical sealing device with function component mounting structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110486474A CN110486474A (en) | 2019-11-22 |
| CN110486474B true CN110486474B (en) | 2024-07-16 |
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| CN101305226A (en) * | 2005-11-14 | 2008-11-12 | 株式会社小松制作所 | Rotary wheel mechanism of construction machine and driving wheel mechanism of construction machine |
| CN103711912A (en) * | 2014-01-09 | 2014-04-09 | 中国石油大学(华东) | Closed-loop control type magnetic levitation fluid dynamic seal device |
| CN104895696A (en) * | 2014-03-07 | 2015-09-09 | 日本利克雷斯工业株式会社 | Metal gasket |
| CN210800062U (en) * | 2019-08-22 | 2020-06-19 | 清华大学 | Mechanical sealing device with functional assembly mounting structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101305226A (en) * | 2005-11-14 | 2008-11-12 | 株式会社小松制作所 | Rotary wheel mechanism of construction machine and driving wheel mechanism of construction machine |
| CN103711912A (en) * | 2014-01-09 | 2014-04-09 | 中国石油大学(华东) | Closed-loop control type magnetic levitation fluid dynamic seal device |
| CN104895696A (en) * | 2014-03-07 | 2015-09-09 | 日本利克雷斯工业株式会社 | Metal gasket |
| CN210800062U (en) * | 2019-08-22 | 2020-06-19 | 清华大学 | Mechanical sealing device with functional assembly mounting structure |
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