CN210800062U - Mechanical sealing device with functional assembly mounting structure - Google Patents
Mechanical sealing device with functional assembly mounting structure Download PDFInfo
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- CN210800062U CN210800062U CN201921378273.4U CN201921378273U CN210800062U CN 210800062 U CN210800062 U CN 210800062U CN 201921378273 U CN201921378273 U CN 201921378273U CN 210800062 U CN210800062 U CN 210800062U
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Abstract
The utility model provides a mechanical seal device with functional unit mounting structure, on the basis of current mechanical seal equipment, through setting up the holder that can deform, the holder has natural state and mounted state, the holder is changed to the mounted state by natural state when receiving external factors and acting, and always have the trend to the natural state conversion when being located the mounted state, and utilize this trend of change to push away the functional unit, make the functional unit be fixed in between holder and the quiet ring, with the functional unit, like the sensor, the actor etc., install on the quiet ring in mechanical seal equipment, can monitor and regulate and control mechanical seal device, the problem of current mechanical seal device because of self material, the unable mounted function unit of structural design has been solved.
Description
Technical Field
The utility model relates to a mechanical seal equipment field especially relates to a mechanical seal device with functional unit mounting structure.
Background
A mechanical seal is a face-to-face dynamic seal that requires reduced or eliminated frictional wear of the friction pair (formed by the two faces in relative motion and the fluid medium) to extend life while maintaining low or no leakage.
With the increasing reliability requirements for industrial applications, the intellectualization of mechanical seals has become one of the important technical features of the next generation of mechanical seals. Some high-performance monitoring and control functions need to be implemented by mounting components with corresponding functions on the sealing ring, such as sensors for detecting various physical signals of the sealing end face of the sealing ring, or actuators for finely adjusting the sealing ring, and specific technical problems faced by mounting these components include:
(1) the seal ring material causes problems in the form of the mounting structure. The mechanical seal ring is made of various materials, and is selected according to physical properties required by the mechanical seal ring to work, so that the materials cannot be changed freely, and typical materials include metal, graphite, ceramic and the like, wherein some materials are difficult to machine in some common structural forms due to the properties of the materials (for example, the materials are difficult to machine threads on the graphite material).
(2) The problem of spatial coordination. The mechanical seal is compact and therefore the functional components mounted on the mechanical seal and the additional structure for mounting the functional components allow for a very limited space in the design.
(3) Reliability and assembly and disassembly manufacturability. Some installation methods in the laboratory stage use some temporary means to install the functional component on the sealing ring, which has poor reliability, lack of repeatability in installation, and the disassembly process easily damages the functional component or the sealing member and cannot be transplanted to the industrial application.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is necessary to provide a mechanical seal device having a functional component mounting structure in order to solve the problem of difficulty in mounting an additional component in the conventional mechanical seal device.
The above purpose is realized by the following technical scheme:
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 retaining piece is arranged between the functional component and the rotating shaft, the retaining piece has a natural state and an installation state, the retaining piece is converted from the natural state to the installation state when being acted by external factors, the retaining piece always has a tendency of converting to the natural state when being located in the installation state, and the functional component is pushed by utilizing the changing tendency, so that the functional component is fixed between the retaining piece and the static 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 are perpendicular to each other; the functional component is arranged on the first surface, and the second surface can limit the displacement of the retaining piece along the axial direction or the radial direction of the static ring.
In one embodiment, a first groove body is arranged on the first surface, the functional assembly is arranged in the first groove body, and the first groove body can limit the displacement of the functional assembly along the axial direction and/or the circumferential direction of the static ring.
In one embodiment, a second groove body is arranged on the retaining piece, the functional assembly is arranged in the second groove body, and the second groove body can limit the displacement of the functional assembly along the axial direction and/or the circumferential direction of the static ring.
In one embodiment, the retainer comprises a retaining ring and a filler ring, the stationary ring further comprises a third surface, the first surface, the second surface and the third surface surround to form a mounting groove, the retaining ring is in contact with the second surface and forms radial positioning, and a positioning structure is arranged on the retaining ring and forms radial positioning for the functional component; the filler 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 elastic deformation of the filler ring.
In one embodiment, the retaining ring is provided with a lead groove or a lead 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 one or any combination of external force action, temperature field and electric field.
In one embodiment, the retaining member is made of nylon.
In one embodiment, a pressure test element is arranged between the holder and the functional component.
In one embodiment, the pressure sensitive element comprises pressure sensitive paper.
In one embodiment, the functional component is one or any combination of acoustic emission sensor, acceleration sensor, temperature sensor, heating/cooling device, electrostriction device, thermal deformation device and ultrasonic generation device.
In one embodiment, the number of the functional components is at least two. In one of the embodiments, the first and second electrodes are,
the utility model has the advantages that:
the utility model provides a mechanical seal device with functional unit mounting structure, on the basis of current mechanical seal equipment, through setting up the holder that can deform, the holder has natural state and mounted state, the holder is changed to the mounted state by natural state when receiving external factors and acting, and always have the trend to the natural state conversion when being located the mounted state, and utilize this trend of change to push away the functional unit, make the functional unit be fixed in between holder and the quiet ring, with the functional unit, like the sensor, the actor etc., install on the quiet ring in mechanical seal equipment, can monitor and regulate and control mechanical seal device, the problem of current mechanical seal device because of self material, the unable mounted function unit of structural design has been solved.
Drawings
Fig. 1 is a schematic structural diagram of a mechanical sealing device with a functional component mounting structure according to an embodiment of the present invention;
fig. 2 is a schematic partial structural view in another direction of a mechanical sealing device with a functional component mounting structure according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a retaining ring in a mechanical seal device with a functional assembly mounting structure according to a first embodiment of the present invention in a natural state;
fig. 4 is a schematic partial structural view of a stationary ring in a mechanical seal device having a functional component mounting structure according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a mechanical sealing device with a functional component mounting structure according to a second embodiment of the present invention;
fig. 6 is a schematic structural diagram of a retaining ring in a mechanical seal device having 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 tank 111; a first protrusion 112; a second surface 120; a third surface 130; the third protrusions 131; a holder 200; a second tank 201; a retaining ring 210; a lead hole 211; a packing ring 220; a functional component 300; a pressure-sensitive paper 400; a stationary ring seat 500; a lead groove 510; a rotating ring 600; a shaft sleeve 700; and (6) a lead wire 800.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail by the following embodiments in combination with the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
The numbering of the components themselves, such as "first", "second", etc., is used herein only to distinguish between the objects depicted and not to have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings). In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In order to meet the requirements of modern industrial production, the conventional mechanical sealing structure needs to attach various functional components, such as a monitoring component, a regulating component and the like, to a sealing ring of the mechanical seal, but in the conventional mechanical sealing device, the following difficulties exist to make the functional components difficult to install: 1. common mechanical mounting structures such as graphite, ceramic and the like are difficult to process from partial materials in the mechanical sealing equipment; 2. the space available for mounting functional components in the mechanical sealing device is limited; 3. the reliability of the installation mode of some experimental functional components is poor, and the method cannot be applied to industrial production.
In order to solve the above problem, the present invention provides a mechanical sealing device with a functional component mounting structure, as shown in fig. 2, the mechanical sealing device includes a sealing component, a functional component 300 and a retaining member 200, the sealing component includes a stationary ring 100, the sealing component is sleeved on a rotating shaft, and the functional component 300 is disposed on the stationary ring 100; the holder 200 is disposed between the functional component 300 and the rotating shaft, and the holder 200 can be deformed and continuously push the functional component 300 after being deformed, so that the functional component 300 is fixed between the holder 200 and the stationary ring 100. By the design, limited processing is carried out on the sealing ring in the existing mechanical sealing equipment, the retaining piece 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 is pushed by the deformation of the retaining piece 200, so that the functional component 300 and the sealing ring are relatively fixed. The functional component 300 is fixed by the retaining piece 200, the structure is simple, the fixation is reliable, and the occupied space and the modification of 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 component 300, and a second surface 120 for positioning the holding member 200; the first surface 110 and the second surface 120 are both disposed on the inner side of the stationary ring 100, i.e., on 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 face of the holding member 200 abuts against the second surface 120, while the side face of the holding member 200 perpendicular to the end face continuously pushes the functional component 300, and the functional component 300 is pushed by the holding member 200 and is kept fixed relative to the stationary ring 100.
Preferably, as shown in fig. 2 and 4, a first groove 111 is provided on the first surface 110, the functional component 300 is disposed in the first groove 111, and the first groove 111 can perform a limiting function on the functional component 300, where the limiting includes limiting the functional component 300 along the axial direction and/or the circumferential direction of the stationary ring 100 by multiple side surfaces of the first groove 111.
Preferably, as shown in fig. 2 and 3, a second groove 201 is provided on the holding member 200, the functional component 300 is provided in the second groove 201, and the second groove 201 can perform a limiting function on the functional component 300, where the limiting includes limiting the functional component 300 along the axial direction and/or the circumferential direction of the stationary 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 surround to form 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 retaining member 200 is arranged in the mounting groove, the retaining member 200 comprises a retaining ring 210 and a packing ring 220, the retaining ring 210 is in contact with the second surface 120 (namely the bottom surface of the mounting groove) and forms radial positioning, and a positioning structure is arranged on the retaining ring 210 to form radial positioning for the functional assembly 300; the packing ring 220 contacts with the third surface 130 (i.e. one side surface of the mounting groove), is supported by a flexible material, and applies an acting force to the retaining ring 210 by means of elastic deformation of the retaining ring 210, so that the retaining ring 210 pushes the functional component 300 and enables the functional component 300 to be tightly attached to the first surface 110 (i.e. the other side surface of the mounting groove), thereby realizing axial positioning of the mounting groove. It should be noted that the radial direction, the axial direction, and the circumferential direction are described above and below, and if not explicitly stated, the radial direction, the axial direction, and the circumferential direction of the rotating shaft (the rotating shaft and the stationary ring 100 are the same) in the mechanical seal device are averaged.
Preferably, as shown in fig. 5, the retaining ring 210 is provided with a lead groove or hole 211. For some functional assemblies 300, it is necessary to connect with external devices through wires or other physical cables, and in order to facilitate the arrangement of the cables, a wire guiding groove or a wire guiding hole 211 is formed on the retaining ring 210 for the cables to pass through.
Preferably, as shown in fig. 2, the stationary ring seat 500 is provided with a lead groove 510 or a lead hole. For some functional assemblies 300, the functional assemblies need to be connected with external equipment through leads 800 or other physical cables, and in order to facilitate the arrangement of the cables, lead slots 510 or lead holes are formed in the stationary ring seat 500 for the cables to pass through.
Preferably, as shown in fig. 3, the retaining member 200 has a natural state and an installation state, the retaining member 200 is normally in the natural state, the retaining member 200 is converted from the natural state to the installation state when being affected by external factors, and the overall size of the retaining member 200 in the installation state is smaller than that in the natural state; the retainer 200 always has a tendency to be transformed to a natural state when it is in the mounted state, and the retainer 200 is gradually transformed from the mounted state to the natural state when there is no influence of external factors.
Preferably, the external factors include one or more of external force action, temperature field and electric field in any combination. Besides the above factors, other means capable of promoting the shape or physical and chemical properties of the object to change, such as magnetic field, illumination, etc., can be applied to the utility model.
Preferably, the retaining member is made of nylon. Nylon has low rigidity and certain elasticity, and simultaneously has high rigidity and heat resistance. Other common elastic materials, such as rubber and partial high polymer elastic materials, can be applied to the utility model.
Preferably, as shown in fig. 2, a pressure test element is provided between the holder 200 and the functional assembly 300. Since the holder 200 applies a force to the functional assembly 300 by deforming itself, the force needs to be controlled to some extent, and thus needs to be measured. By providing a pressure test element between the functional assembly 300 and the holder 200, the force exerted by the holder 200 on the functional assembly 300 can be measured, and the adjustment of the holder 200 or the functional assembly 300 can be facilitated.
Preferably, as shown in fig. 2, the pressure test member includes a pressure sensitive paper 400. The pressure sensitive paper 400 changes color when subjected to a specific pressure, and the pressure applied to different positions of the functional assembly 300 can be determined by the color change. The pressure test element has two force measuring modes, one is real-time monitoring and synchronous output of results, for example, a processing sensor or a strain gauge is arranged on the holding piece 200 and the functional component 300, the method has the advantage of real-time monitoring, but the installation space between the holding piece 200 and the functional component 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 unit 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 mode is simple to install, but the real pressure condition during installation cannot be measured, and a theoretical value can be obtained after multiple times of pressure measurement through multiple times of experimental installation.
Preferably, 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 electrostriction device, a thermal deformation device and an ultrasonic generating device. The acoustic emission sensor, the acceleration sensor and the temperature sensor are monitoring sensors and are used for monitoring some physical parameters of a sealing ring in the mechanical sealing equipment; the heating/cooling device, the electrodeformation device, the thermal deformation device and the ultrasonic generation device are action elements which are used for changing the physical parameters or the physical and chemical properties of the sealing ring.
The first embodiment is as follows:
as shown in fig. 1 to 4, fig. 1 is a partial sectional view of the mechanical seal device with a functional component mounting structure provided by the present invention when the retainer 200 and the functional component 300 are not mounted. Wherein quiet ring 100 is for installing functional unit 300 in convenient, quiet ring 100 includes the great section of internal diameter and the minor part of internal diameter, and the inside side of the great section of internal diameter is first surface 110, and the terminal surface of the minor part of internal diameter is second surface 120. The mechanical seal is the same as a general mechanical seal in other devices, such as the rotating ring 600, the shaft sleeve 700, etc.
The retaining member 200 is a ring 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 maintained between the two without contact. The end surface of the retainer 200 is in contact with the second surface 120 of the stationary ring 100 and is axially positioned so that the retainer 200 has the correct axial position while restricting movement of the retainer 200 in the axial direction to the left in the drawing. The outer side surface of the ring-shaped holder 200 pushes the functional component 300 and presses the functional component 300 against the first surface 110, so that the functional component 300 and the stationary ring 100 are fixed. The first surface 110 of the stationary ring 100 is provided with a first groove 111 for positioning the functional assembly 300; the holding member 200 is provided with a second groove 201, and the second groove 201 is used for installing a pressure test element and has an auxiliary positioning function on the functional assembly 300.
For the first slot 111, it may be a semi-through slot or a closed slot, and since the slot is usually processed by milling, the first slot 111 has a plane section located in the middle of the slot and cylindrical sections located at the two ends of the slot. For the semi-through groove, the function component 300 is positioned in a single direction along the axial direction by means of the side surface of the plane section of the first groove body 111, and the function component 300 is positioned in the radial direction by means of the bottom of the first groove body 111. For the closed groove, the functional component 300 is positioned in the axial direction by two side faces of the planar section of the first groove body 111, and the functional component 300 is positioned in the radial direction by the bottom of the first groove body 111. It should be noted that the closed slot has certain requirements on the size of the functional module 300, and when the size of the functional module 300 in a certain direction is equal to the slot width, axial bidirectional positioning can be achieved, and if the size of the functional module 300 is smaller than the slot width, axial unidirectional positioning can be achieved only through one side surface of the slot body. The length direction of the first groove body 111 is perpendicular to the axial direction of the rotating shaft, the length direction of the first groove body 111 can be parallel to the axial direction of the rotating shaft, and the parallel type positioning function is performed on the functional component 300 along the circumferential direction. It should be noted that, since the amount of material removed by the cutting process performed on the first groove 111 is very limited, the structural modification is considered to hardly affect the mass distribution of the seal ring and the balance characteristic of the seal ring.
The holding member 200 is provided with a second groove 201, and the second groove 201 is used for positioning the functional assembly 300 during installation. And the pressure test member is disposed in the second tank 201. The retainer 200 is made of nylon, which has low rigidity and high strength and heat resistance, and the temperature of the stationary ring 100 rises during the operation of the rotating shaft, so that the retainer 200 has certain heat resistance requirements, and the nylon also has certain elasticity, and can be naturally restored to a natural state or has a tendency of being converted to the natural state after being stressed and deformed to an installation state.
The shapes of the first and second tanks 111 and 201 should be adjusted according to the shape of the functional assembly 300, for example, when the measuring surface of the functional assembly 300 is a plane, the bottom surface of the first tank 111 should also be a plane; when the measuring surface of the secondary functional 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 slot 111 and the second slot 201 should be adjusted according to the number of the functional components 300.
The retainer 200 is not a single body of revolution in its natural state, and is composed of a multi-stage body structure and a link structure, each stage of the body structure being a part of a certain cylindrical body of revolution. When the retainer 200 is in the installed state and is installed in the mechanical seal device, it cannot return to the natural state due to the pressing action of the functional assembly 300, so that the shape of the retainer 200 is approximately close to a circular ring shape and better matches with other structures in the mechanical seal device. The elastic deformation of the retainer 200 in operation is a source of a stable, predictable retaining force that is generated against the functional assembly 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 through the push ring. The functional assembly 300 includes three shape acoustic emission sensors for measuring acoustic emission signals generated by the end face friction pairs. The pressure sensing element is a 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, the pressure-sensitive paper 400 and the acoustic emission sensor are firstly placed in the second groove 201 on the retainer 200, external force is applied to deform the retainer 200 made of nylon, the retainer 200, the pressure-sensitive paper 400 and the acoustic emission sensor are placed on the inner side of the stationary ring 100, the acoustic emission sensor is positioned in the first groove 111, and then the external force is removed. The whole mechanical sealing device is heated to 130 ℃ to simulate the temperature of the mechanical sealing device during operation, the mechanical sealing device is stopped and removed after operating for a period of time, the pressure sensitive paper 400 is taken out, the pressure information recorded by the pressure sensitive paper 400 is recorded, and the holding piece 200 is adjusted according to the pressure information. And repeating the actions until the pressure and the uniformity meet the requirements and keep stable. After the installation, an unread sheet of pressure sensitive paper 400 remains between the holder 200 and the functional assembly 300, and is used to read pressure data during subsequent servicing of the mechanical seal.
For some holding members 200 that are difficult to change their shape by external force, the holding members 200 can be installed inside the mechanical sealing device by cooling the holding members 200 and/or heating the mechanical sealing device as a whole by using the principle of thermal expansion and contraction.
Example two:
as shown in fig. 5 and 6, compared to the first embodiment, the second embodiment does not perform material removal processing on the stationary ring 100, i.e., the stationary ring 100 does not have the first groove 111. Accordingly, the stationary ring 100 has a first surface 110, a second surface 120 and a third surface 130 (it should be noted that the first surface 110 and the second surface 120 are different in the first embodiment and the second embodiment), 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 surface, the second surface and the third surface 130 surround and 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, the first protrusion 112 is used to expand the installation surface of the functional component 300 to improve the efficacy of the functional component 300, and the third protrusion 131 is used to assist in positioning the functional component 300.
The second embodiment is mounted as follows: the pressure-sensitive paper 400 and the functional component 300 are first sequentially placed in the retaining ring 210 and positioned by the positioning groove on the retaining ring 210, with the pressure-sensitive paper 400 being located between the functional component 300 and the retaining ring 210. And then the functional component 300, the retaining ring 210 and the packing ring 220 are put into the mounting groove on the stationary ring 100, the external force is removed after the mounting, and the first bulge 112, the functional component 300, the pressure-sensitive paper 400, the retaining ring 210, the packing ring 220 and the third bulge 131 are arranged in sequence from left to right after the mounting as shown in the figure. The whole mechanical sealing device is heated to 130 ℃ to simulate the temperature of the mechanical sealing device during operation, the mechanical sealing device is stopped and removed after operating for a period of time, the pressure sensitive paper 400 is taken out, the pressure information recorded by the pressure sensitive paper 400 is recorded, and the holding piece 200 is adjusted according to the pressure information. And repeating the actions until the pressure and the uniformity meet the requirements and keep stable. After the installation, an unread sheet of pressure sensitive paper 400 remains between the holder 200 and the functional assembly 300, and is used to read pressure data during subsequent servicing of the mechanical seal.
For some holding members 200 that are difficult to change their shape by external force, the holding members 200 can be installed inside the mechanical sealing device by cooling the holding members 200 and/or heating the mechanical sealing device as a whole by using the principle of thermal expansion and contraction.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (13)
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 retaining piece is arranged between the functional component and the rotating shaft, the retaining piece has a natural state and an installation state, the retaining piece is converted from the natural state to the installation state when being acted by external factors, the retaining piece always has a tendency of converting to the natural state when being located in the installation state, and the functional component is pushed by utilizing the changing tendency, so that the functional component is fixed between the retaining piece and the static ring.
2. The mechanical seal device with a functional component mounting structure according to claim 1, wherein the stationary ring includes a first surface and a second surface, both of which are located inside the stationary ring and are perpendicular to each other; the functional component is arranged on the first surface, and the second surface can limit the displacement of the retaining piece along the axial direction or the radial direction of the static ring.
3. The mechanical seal device with the functional component mounting structure as claimed in claim 2, wherein a first groove is provided on the first surface, the functional component is disposed in the first groove, and the first groove can limit the 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 functional component mounting structure of claim 2, wherein the retainer comprises a retainer ring and a filler ring, the stationary ring further comprises a third surface, the first, second and third surfaces surround to form a mounting groove, the retainer ring is in contact with the second surface and forms a radial location, and a locating structure is provided on the retainer ring and forms a radial location for the functional component; the filler 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 elastic deformation of the filler ring.
5. The mechanical seal device with the functional component mounting structure as claimed in claim 2 or 4, wherein a second groove is provided on the retainer, the functional component is disposed in the second groove, and the second groove can limit the displacement of the functional component in the axial direction and/or the circumferential direction of the stationary ring.
6. The mechanical seal device with a functional component mounting structure according to claim 4, wherein a lead groove or a lead hole is provided on the retainer ring.
7. The mechanical seal device with a functional component mounting structure according to claim 1, wherein a lead groove or a lead hole is provided on the stationary ring seat in the seal assembly.
8. The mechanical seal device with a functional component mounting structure according to claim 1, wherein the external factor is one or any combination of external force, temperature field and electric field.
9. The mechanical seal device with a functional component mounting structure as set forth in claim 1, wherein said retainer is made of nylon.
10. The mechanical seal device with a functional-component mounting structure according to claim 1, wherein a pressure test element is provided between the holder and the functional component.
11. The mechanical seal device with a functional component mounting structure as claimed in claim 10, wherein said pressure-sensitive member includes a pressure-sensitive paper.
12. The mechanical sealing device with the functional component mounting structure according to claim 1, wherein the functional component is one or any combination of acoustic emission sensors, acceleration sensors, temperature sensors, heating/cooling devices, electrostrictive devices, thermotropic deformation devices, and ultrasonic generation devices.
13. The mechanical seal device with a functional-component mounting structure according to claim 12, wherein the number of the functional components is at least two.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921378273.4U CN210800062U (en) | 2019-08-22 | 2019-08-22 | Mechanical sealing device with functional assembly mounting structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921378273.4U CN210800062U (en) | 2019-08-22 | 2019-08-22 | Mechanical sealing device with functional assembly mounting structure |
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| CN210800062U true CN210800062U (en) | 2020-06-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486474A (en) * | 2019-08-22 | 2019-11-22 | 清华大学 | Mechanically-sealing apparatus with functional unit mounting structure |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486474A (en) * | 2019-08-22 | 2019-11-22 | 清华大学 | Mechanically-sealing apparatus with functional unit mounting structure |
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