CN105020397A - Contact type mechanical seal stationary ring assembly and assembling method - Google Patents
Contact type mechanical seal stationary ring assembly and assembling method Download PDFInfo
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- CN105020397A CN105020397A CN201510513157.9A CN201510513157A CN105020397A CN 105020397 A CN105020397 A CN 105020397A CN 201510513157 A CN201510513157 A CN 201510513157A CN 105020397 A CN105020397 A CN 105020397A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
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Abstract
The invention provides a contact type mechanical seal stationary ring assembly and an assembling method. The stationary ring assembly comprises a stationary ring body and an end cover located at the back end of the stationary ring body; the front end face of the stationary ring body is a sealing end face, the stationary ring body is at least provided with one cavity with an opening in the back end, and the end cover is used for sealing the cavity; and a capillary core material and a condensing agent are arranged in the cavity. Heat is absorbed in the process that a condensing agent is gasified in a high-temperature region close to the sealing end face, the temperature at the position, close to the sealing end face, in the cavity drops, and the temperature of the sealing end face further drops; and heat is discharged in the process that the condensing agent is condensed to be in the liquid state in a low-temperature region. In this way, according to the heat pipe principle, the difference of the temperature in the cavity is used, and a phase change cycle of the condensing agent from the liquid state to the gas state to the liquid state is formed, so that a large amount of heat at the position of the sealing end face is rapidly brought away, the heat stress and the heat deformation at the sealing end face are reduced, the sealing stability is improved, and the service life of the contact type mechanical seal stationary ring assembly is prolonged.
Description
Technical field
The invention belongs to technical field of mechanical, be specifically related to one and be applicable to the contacting mechanical seal stationary ring assembly of special operation condition (such as high pressure, high rotating speed, high temperature, large-diameter etc.) and the assembly method of this stationary ring assembly.
Background technique
Mechanical seal is widely used in fields such as oil, chemical industry, aviations, is mainly used in the centrifugal pump shaft end seal in these fields.Mechanical seal generally can be divided into contactless and contact-type two kinds of seal form.Non-contact mechanical seal development in recent years rapidly, but due to seal face be non-contact, cause relatively large leakage rate, so the occasion that ask for something is higher still needs to use contacting mechanical seal, and being of wide application of contacting mechanical seal.
For the contacting mechanical seal of special operation condition (such as high pressure, high rotating speed, high temperature, large-diameter etc.), in running, owing to mutually rubbing between dynamic and static ring seal face, produce a large amount of frictional heats, cause seal face temperature rise, produce larger thermal stress, easily cause seal face thermal distortion, even there is seal face radial cracking and material adhesive transfer, cause the consequences such as wearing and tearing aggravation and leakage rate increase; Dynamic and static ring seal face is in mixed friction state, containing a small amount of fluid between seal face, at high temperature easily vaporizes, is sometimes attended by larger vapour song, and likely cause seal ring cracked; In addition, the undue heat produced between seal face, easily causes O type rubber ring to harden and cracking.The problems referred to above all easily cause seal failure, reduce sealing life.
Most friction Heat of Formation between dynamic and static ring seal face, pass in dynamic and static ring by heat conducting mode, the pyroconductivity of rotating ring and stationary ring material is larger, and the heat conduction that dynamic and static ring seal face produces is faster; And coordinate washing solution to rinse the outer wall of dynamic and static ring, to play cooling-down effect.
Summary of the invention
The invention provides a kind of contacting mechanical seal stationary ring assembly, utilize heat pipe principle, improve the heat transfer efficiency of stationary ring, effectively reduce seal face temperature, reduce thermal stress and the thermal distortion of seal face, improve the stability of sealing to extend sealing life.
For reaching above-mentioned technical purpose, the present invention realizes by the following technical solutions:
A kind of contacting mechanical seal stationary ring assembly, comprise stationary ring body and the end cap being positioned at described stationary ring body rear end, the front-end face of described stationary ring body is seal face, described stationary ring body is at least provided with the cavity of an open rearward end, described end cap, for sealing described cavity, is provided with capillary core material and condensing agent in described cavity.
When described stationary ring assembly work, described seal face place produces a large amount of frictional heats; Described cavity front end is vaporizated into gaseous state near the described condensing agent heat absorption of described seal face, the air pressure of described cavity front end is increased, now the described condensing agent of gaseous state flows to the region that described cavity internal air pressure is low and is condensed into liquid state and is attached on described capillary core material, and the front end of the described condensing agent of liquid state to described cavity is carried by described capillary core material afterwards.
Further, described end cap offers the annular notches matched with the ear end face of described stationary ring body, described notch is wound with epoxy or is coated with nickel-base alloy.
Further, the circumferencial direction of described stationary ring body is evenly equipped with the described cavity of multiple fan annular.
Further, described stationary ring body offers the hand-hole be connected with described cavity, described condensing agent is injected by described hand-hole.
Further, described stationary ring body is provided with the plug for sealing described hand-hole.
Further, the distance between the front-end face of described cavity and described seal face is 0.8 ~ 1.2mm.
Further, the front-end face and outer diameter face of described cavity arrange described capillary core material, the capillary core material be arranged in front-end face and outer diameter face is continuous print.
Further, described capillary core material is nylon fiber or nylon fibers.
Further, described end cap is arranged on stationary ring body ear end face by welding or interference fit.
Further, in described stationary ring assembly manufacture process, vacuumize process in described cavity, make between the maximum temperature of the boiling point of the condensing agent corresponding to the pressure in described cavity under described stationary ring assembly normal working in described cavity and minimum temperature.
Further, the outside of described stationary ring body comprise near described seal face hold boss and for fixing stationary platen; When the work of described stationary ring assembly, described in flowing through for reducing the washing solution of described seal face temperature, hold the outer side surface of boss; The described outer side surface holding boss offers some grooves.
Further, the distance between two adjacent described groove center is 0.8 ~ 1.1mm.
Further, the distance of pressing close between the center of the described groove of described seal face and described seal face is 1 ~ 2mm.
Further, the outer side surface holding boss described in is offered the described groove of spheric being equipped with some equal and opposite in directions, being dislocatedly distributed.
Further, the degree of depth of described spherical groove and the ratio of diameter are 0.12 ~ 0.15.The degree of depth of described spherical groove is 0.12 ~ 0.15mm.
Further, the diameter of described spherical groove is 0.8 ~ 1.1mm.
Further, the outer side surface holding boss described in is arranged at intervals with the described groove of annular.
Further, the outer side surface holding boss described in offers the leg-of-mutton described groove being equipped with some equal and opposite in directions, being dislocatedly distributed.
Based on above-mentioned contacting mechanical seal stationary ring assembly, the present invention also provides a kind of assembly method of above-mentioned contacting mechanical seal stationary ring assembly, comprises the steps:
A, be installed to by described capillary core material in the cavity of described stationary ring body, described capillary core material is fitted the front-end face of described cavity and outer diameter face;
B, be wound around epoxy by the front-end face of described end cap with the position of described stationary ring body gluing, sealing or spray nickel-base alloy, and described end bracket enclosed being fixed on described stationary ring body;
C, cooling liquid is injected in described cavity by described hand-hole, afterwards described cavity is vacuumized process, make between the maximum temperature of the boiling point of the condensing agent corresponding to the pressure in described cavity under described stationary ring assembly normal working in described cavity and minimum temperature; Finally described hand-hole is closed, complete assembling.
A kind of contacting mechanical seal stationary ring assembly provided by the invention, by being at least provided with the cavity of an open rearward end on described stationary ring body, is provided with capillary core material and liquid condensing agent in described cavity; When stationary ring assembly is in running order, stationary ring coordinates with rotating ring and plays seal action, and the seal face place friction of stationary ring generates a large amount of frictional heat, and namely the temperature of seal face is the highest, and by stationary ring body outwards, transferring heat backward, the temperature thus near seal face in cavity is the highest; The front end of cavity is near seal face, namely the temperature of cavity front end is higher, described condensing agent is absorbed heat and is vaporizated into gaseous state, and then the air pressure of described cavity front end increases, now the described condensing agent of gaseous state flows to the region that described cavity internal air pressure is low, make condensing agent be condensed into liquid state and be attached on described capillary core material, the front end of the described condensing agent of liquid state to described cavity is carried by described capillary core material afterwards.Described in the high-temperature zone near seal face, condensing agent is vaporized in process and absorbs heat, and reduces the temperature near seal face place in cavity, and then reduces the temperature of seal face; Heat release in liquid process is condensed at condensing agent described in low temperature area.Like this according to heat pipe principle, utilize the temperature difference in cavity, define condensing agent from liquid state, to gaseous state, again to the circulation of a phase transformation of liquid state, achieve and a large amount of heat at seal face place is taken away fast, reduce thermal stress and the thermal distortion of seal face, improve the stability of sealing, to extend its working life.
After reading the specific embodiment of the present invention by reference to the accompanying drawings, the other features and advantages of the invention will become clearly.
Accompanying drawing explanation
Fig. 1 is the structural representation of first embodiment of contacting mechanical seal stationary ring assembly proposed by the invention;
Fig. 2 be in Fig. 1 A-A to sectional structure schematic diagram;
Fig. 3 be in Fig. 2 B-B to sectional structure schematic diagram;
Fig. 4 is the structural representation of end cap in Fig. 3;
Fig. 5 is the structural representation of stationary ring body in Fig. 3;
Fig. 6 is the right TV structure schematic diagram of Fig. 5;
Fig. 7 is the structural representation of the stationary ring body of second embodiment of contacting mechanical seal stationary ring assembly proposed by the invention;
Fig. 8 be in Fig. 7 C-C to sectional structure schematic diagram;
Fig. 9 is the structural representation of the stationary ring body of the 3rd embodiment of contacting mechanical seal stationary ring assembly proposed by the invention.
Embodiment
For making the object of the embodiment of the present invention, technological scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, the technological scheme in the embodiment of the present invention is clearly and completely described.
In describing the invention, it should be noted that, definition term: be " interior " with the direction of axis near stationary ring body, be " outward " with the direction of the axis away from stationary ring body, with near the direction of seal face be " front ", with away from seal face direction for " after; term is only the present invention for convenience of description and simplified characterization; instead of instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.
Consult Fig. 1-Fig. 6, first embodiment of contacting mechanical seal stationary ring assembly proposed by the invention, a kind of contacting mechanical seal stationary ring assembly comprises stationary ring body 1 and is positioned at the end cap 2 of stationary ring body 1 rear end, wherein the front-end face of stationary ring body 1 is seal face 11, stationary ring body 1 is at least provided with the cavity 12 of an open rearward end, and end cap 2 is the openings for seal chamber 12 rear end, is provided with capillary core material 3 and condensing agent in cavity 12.
In the present embodiment, by being at least provided with the cavity 12 of an open rearward end on stationary ring body 1, and in cavity, be provided with capillary core material 3 and liquid condensing agent; When stationary ring assembly is in running order, stationary ring coordinates with rotating ring and plays seal action, the seal face 11 place friction of stationary ring generates a large amount of frictional heat, namely the temperature of seal face is the highest, and by stationary ring body 1 outwards, transferring heat backward, the temperature thus near seal face 11 in cavity 12 is the highest; The front end of cavity 12 is near seal face 11, namely the temperature of cavity 12 front end is higher, condensing agent is absorbed heat and is vaporizated into gaseous state, and then the air pressure of cavity 12 front end increases, now the condensing agent of gaseous state flows to the region that cavity 12 internal air pressure is low, make condensing agent be condensed into liquid state and be attached on capillary core material 3, the front end of the condensing agent of liquid state to cavity 12 is carried by capillary core material 3 afterwards.Be vaporized in process at the high-temperature zone condensing agent near seal face 11 like this and absorb heat, reduce the temperature near seal face 11 place in cavity 12, and then reduce the temperature of seal face 11; Heat release in liquid process is condensed at low temperature area condensing agent.Like this according to heat pipe principle, utilize the temperature difference in cavity 12, define condensing agent from liquid state, to gaseous state, again to the circulation of a phase transformation of liquid state, achieve and a large amount of heat at seal face 11 place is taken away fast, reduce thermal stress and the thermal distortion of seal face 11, improve the stability of sealing to increase the service life.
Certainly, in stationary ring assembly working procedure, cooling liquid flows through the outside of stationary ring body 1, lower the temperature for giving seal face 11, so near the outside of stationary ring body 1 in cavity 12, namely the outside diameter temperature of cavity 12 is lower, and the rear part temperature of cavity 12 is lower, and namely the outside diameter of cavity 12 and the rear portion of cavity 12 are low temperature area.Namely condensing agent is vaporized in the front end of cavity 12, is condensed into liquid at the outside diameter of cavity 12 or the rear portion of cavity 12.
In the present embodiment, shown in Fig. 2 and Fig. 3, the opening of cavity 12 rear end makes the inside in order to capillary core material 3 being arranged on cavity 2, and end cap 2 is the openings for seal chamber 12 rear end, and end cap 2 is arranged on the ear end face of stationary ring body 1 by welding or interference fit.
In the present embodiment, shown in Figure 3, the front-end face in cavity 12 and outer diameter face are provided with capillary core material 3, and the capillary core material 3 be arranged between front-end face and outer diameter face is continuous print; Capillary core material 3 be porous material just can, be preferably nylon fiber or nylon fibers; Capillary core material 3 mainly for delivery of condensing agent, also for the attachment of liquid condensation agent; Are continuous print by the capillary core material 3 be arranged between front-end face and outer diameter face, the capillary core material 3 in other words in front-end face and outer diameter face is continuous print, and namely the condensing agent of liquid state can be transported to front-end face place from outer diameter face by capillary core material 3.Capillary core material 3 can be sheet, in the front-end face being fitted in cavity 12 and outer diameter face; After capillary core material 3 is set, also there is in cavity 12 flowing of larger space for gaseous state condensing agent.
Shown in Figure 4, in order to improve the sealing of end cap 2 and stationary ring body 1 further, end cap 2 offers the annular notches 21 matched with the ear end face of stationary ring body 1, notch 21 opens the outside being arranged on end cap 2, and on notch 21, be wound with epoxy or be coated with nickel-base alloy, to improve the sealing of end cap 2 and stationary ring body 1.
In the present embodiment, shown in Fig. 5 and Fig. 6, the cavity 12 of three fan annulars is evenly equipped with at the circumferencial direction of stationary ring body 1, the distance d arranged between the front-end face of cavity 12 and seal face 11 is 0.8 ~ 1.2mm, make the heat transmission between seal face 11 and cavity 12 very fast, contribute to the heat loss at seal face 11 place, reduce the temperature of seal face 11.
In order to be injected by condensing agent in cavity 12, stationary ring body 1 offers the hand-hole 13 be connected with cavity 12, and condensing agent is injected by hand-hole 13; For the injection amount of condensing agent, arrange capillary core material 3 soaked just can, generally inject 1 ~ 2ml.Stationary ring body 1 is provided with the plug 4 for sealing hand-hole 13.
For condensing agent can select the common fluid as condensation just can, water can be selected as condensing agent in order to reduce costs.
In stationary ring assembly manufacture process, vacuumize process in cavity 12, due to when air pressure is low, the boiling point of condensing agent is lower; The temperature step-down of condensing agent phase transformation in cavity 12 is made through vacuumizing process, refrigeration agent becomes gaseous state heat absorption, reduce the temperature of cavity 12 front end, the temperature in cavity 12 is made to remain on boiling point lower than condensing agent, the heat transmission at seal face 11 place is accelerated, effectively can reduce the temperature of seal face 11.But the pressure in cavity 12 can not be too low, otherwise condensing agent is in gaseous state and can not liquefies always, thus the boiling point of the condensing agent corresponding to the pressure in cavity 12 is set, the maximum temperature in stationary ring assembly normal working lower chamber 12 and between minimum temperature.
Shown in Fig. 1 and Fig. 5, in order to the installation of stationary ring assembly is fixed, the outside of stationary ring body 1 comprise near seal face 11 hold boss 15 and for fixing stationary platen 14; When stationary ring assembly works, carry out flushing cooling and clean with washing solution, washing solution flow through hold boss outer side surface for reducing temperature; Holding boss 15 and the area of contact of washing solution to increase, increasing cooling-down effect, the outer side surface holding boss 15 offers some grooves 151.Make like this to hold the outer side surface of boss 15 and the area of contact of washing solution, increase cooling-down effect, and then the temperature of the outer diameter face of the cavity 12 near the outer side surface holding boss 15 is reduced, the gaseous state condensing agent in cavity 12 is made to be condensed into liquid at the outside diameter of cavity 12, enhance the phase transformation of condensing agent further, add the speed that heat transmission is scattered and disappeared, reduce the temperature at seal face 11 place fast.
The outside diameter of cavity 12 is anterior rinse stationary ring body 1 due to washing solution hold boss outer side surface, the temperature of the front portion of the outer diameter face of cavity 12 is is comparatively fast scattered and disappeared, and the rear portion distance seal face of the outer diameter face of cavity 12 is far away, the transmission that the heat of seal face 11 generation is less is gone over, and thus temperature is not high yet; Mainly the condensing agent of gaseous state is condensed into liquid state
In some embodiments of the invention, shown in Fig. 1 and Fig. 5, in order to monitor the temperature of seal face 11, avoid occurring the too high seal failure caused of temperature, stationary ring body 1 is offered and is equipped with axial temperature measuring hole 16, the diameter of temperature measuring hole 16 is 1 ~ 2mm, and temperature measuring hole 16 extends to seal face vertically from the ear end face opening of stationary ring body, makes the front-end face of temperature measuring hole 16 close to seal face 11; Thermocouple being installed for measuring the temperature of temperature measuring hole 16 front end in temperature measuring hole 16, also just can reflecting the temperature of seal face 11.End cap 2 also offers the hole 22 of the coaxial line communicated with temperature measuring hole 16, after stationary ring general assembly is completed, again thermocouple is installed from the ear end face of end cap 2, such thermocouple passing hole 22 is in communication with the outside, the cable of the power line and signaling line of being convenient to thermocouple is arranged, and facilitates maintenance and the replacing of thermocouple.
In some embodiments of the invention, shown in Figure 1, the spacing of holding groove 151 adjacent on the outer side surface of boss 15 is arranged, too closely can reduce the intensity of stationary ring body 1, too far can not better improve cooling-down effect again; Shown by test of many times, the distance arranged between two adjacent groove center is 0.8 ~ 1.1mm, can ensure the intensity of stationary ring body 1, can reach good cooling-down effect again.And the distance arranging between the center of the groove 151 of seal face 11 and seal face 11 is 1 ~ 2mm.
Shown in Figure 1, on the outer side surface holding boss 151, offer the groove 151 of spheric being equipped with some equal and opposite in directions, being dislocatedly distributed in the present embodiment; Arrange groove 151 for spheric, namely add the area of contact of holding boss 15 and washing solution, increase cooling-down effect, stress is concentrated to make again groove 151 place not easily occur, can not significantly reduce the intensity of holding outside boss 15.
The distance arranged between two adjacent groove 151 centers is 0.8 ~ 1.1mm, and the degree of depth of spherical groove is 0.12 ~ 0.15mm, and the diameter of spherical groove is 0.8 ~ 1.1mm.
Consult Fig. 1-Fig. 6, the assembly method of contacting mechanical seal stationary ring assembly in the present embodiment is described, comprises the steps:
A, capillary core material 3 to be installed in the cavity 12 of stationary ring body 1, capillary core material 3 to be fitted the front-end face of cavity 12 and outer diameter face, and ensures that the capillary core material 3 between front-end face and outer diameter face is continuous print.In this step, capillary core material 3 is installed to front-end face and the outer diameter face of cavity 12, the front end of cavity 12 is near seal face, temperature is higher, condensing agent becomes gaseous state from liquid state heat absorption herein, reduces the temperature at front-end face place, and the heat namely making seal face transmission reduces fast.The outside diameter of cavity 12 is anterior rinse stationary ring body 1 due to washing solution hold boss outer side surface, the temperature of the front portion of the outer diameter face of cavity 12 is is comparatively fast scattered and disappeared, and the rear portion distance seal face of the outer diameter face of cavity 12 is far away, the transmission that the heat of seal face 11 generation is less is gone over, and thus temperature is not high yet; The condensing agent of gaseous state is condensed into liquid state by the outside diameter of cavity 12.Capillary core material 3 provides attachment for the condensation of gaseous state condensing agent, contributes to the speed accelerating condensation; Owing to being positioned at the evaporation of the condensing agent that the capillary core material 3 of the front end of cavity 12 adheres to, the condensing agent of the outside diameter condensation at cavity 12 is fed forward by capillary core material 3.
B, will the front-end face of end cap 2 be wound around epoxy with the position of stationary ring body 1 gluing, sealing or spray nickel-base alloy, and end cap 2 is sealingly clamped on stationary ring body 1; In this step, end cap 2 is sealingly clamped on stationary ring body 1, the opening of cavity 12 rear end is sealed.
C, cooling liquid is injected in cavity 12 by hand-hole 13, afterwards cavity 12 is vacuumized process, make the boiling point of the condensing agent corresponding to the pressure in cavity 12 under stationary ring assembly normal working, the maximum temperature in cavity 12 and between minimum temperature; Finally with plug 4, hand-hole 13 is closed, complete assembling.
Consult Fig. 7 and Fig. 8, be second embodiment of contacting mechanical seal stationary ring assembly proposed by the invention, be from the main distinction of first embodiment: different in the shape of holding the groove that the outer side surface of boss 15 is arranged, and cavity 12 be set to four; Other structures can adopt the structure identical with first embodiment.
In the present embodiment, the outer side surface holding boss 15 is arranged at intervals with annular groove 152, by the guiding of annular groove 152, make washing solution annularly can flow through downwards larger circumferential area by groove 152, the angle flowed through in other words corresponding to the outer side surface holding boss increases, and increases cooling-down effect.
The distance arranged between two adjacent annular groove 152 centers is 0.8 ~ 1.1mm, and the distance of pressing close between the center of the annular groove 152 of seal face 11 and seal face 11 is 1 ~ 2mm; The depth bounds of annular groove 152 is 0.5 ~ 0.8mm, and width range is 0.4 ~ 0.6mm.
In the present embodiment, be evenly equipped with the cavity 12 of four fan annulars at the circumferencial direction of stationary ring body 1, cavity 12 open rearward end, the outer side surface of stationary ring body 1 offers four uniform respectively with four cavitys 12 to the hand-hole 13 be communicated with.
Consult Fig. 9, the 3rd embodiment of contacting mechanical seal stationary ring assembly proposed by the invention, be from the main distinction of first embodiment: different in the shape of holding the groove that the outer side surface of boss 15 is arranged, other structures can adopt the structure identical with first embodiment.
In the present embodiment, the outer side surface holding boss 15 is offered the triangular groove 153 being equipped with some equal and opposite in directions, being dislocatedly distributed, groove 153 is equiangular triangle.
The distance arranged between two adjacent triangular groove 153 centers is 0.8 ~ 1.1mm, and the depth bounds of triangular groove 153 is 0.5 ~ 0.8mm, and side size range is 0.8 ~ 1.1mm.
The above is only preferred embodiment of the present invention, and be not restriction the present invention being made to other form, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the Equivalent embodiments of equivalent variations.But everyly do not depart from technical solution of the present invention content, any simple modification, equivalent variations and the remodeling done above embodiment according to technical spirit of the present invention, still belong to the protection domain of technical solution of the present invention.
Claims (10)
1. a contacting mechanical seal stationary ring assembly, it is characterized in that, comprise stationary ring body and the end cap being positioned at described stationary ring body rear end, the front-end face of described stationary ring body is seal face, described stationary ring body is at least provided with the cavity of an open rearward end, described end cap, for sealing described cavity, is provided with capillary core material and condensing agent in described cavity.
2. stationary ring assembly according to claim 1, is characterized in that, when described stationary ring assembly work, described seal face place produces a large amount of frictional heats; Described cavity front end is vaporizated into gaseous state near the described condensing agent heat absorption of described seal face, the air pressure of described cavity front end is increased, now the described condensing agent of gaseous state flows to the region that described cavity internal air pressure is low and is condensed into liquid state and is attached on described capillary core material, and the front end of the described condensing agent of liquid state to described cavity is carried by described capillary core material afterwards.
3. stationary ring assembly according to claim 1, is characterized in that, described end cap offers the annular notches matched with the ear end face of described stationary ring body, described notch is wound with epoxy or is coated with nickel-base alloy.
4. stationary ring assembly according to claim 1, is characterized in that, the circumferencial direction of described stationary ring body is evenly equipped with the described cavity of multiple fan annular.
5. the stationary ring assembly according to any one of Claims 1-4, is characterized in that, described stationary ring body offers the hand-hole be connected with described cavity, described condensing agent is injected by described hand-hole.
6. the stationary ring assembly according to any one of Claims 1-4, is characterized in that, the front-end face and outer diameter face of described cavity arrange described capillary core material, and the capillary core material be arranged between front-end face and outer diameter face is continuous print.
7. the stationary ring assembly according to any one of Claims 1-4, it is characterized in that, in described stationary ring assembly manufacture process, vacuumize process in described cavity, make between the maximum temperature of the boiling point of the condensing agent corresponding to the pressure in described cavity under described stationary ring assembly normal working in described cavity and minimum temperature.
8. the stationary ring assembly according to any one of Claims 1-4, is characterized in that, the outside of described stationary ring body comprise near described seal face hold boss and for fixing stationary platen; When the work of described stationary ring assembly, described in flowing through for reducing the washing solution of described seal face temperature, hold the outer side surface of boss; The described outer side surface holding boss offers some grooves.
9. stationary ring assembly according to claim 8, is characterized in that, the distance between two adjacent described groove center is 0.8 ~ 1.1mm, and the distance of pressing close between the center of the described groove of described seal face and described seal face is 1 ~ 2mm.
10. an assembly method for contacting mechanical seal stationary ring assembly according to claim 5, comprises the steps:
A, be installed to by described capillary core material in the cavity of described stationary ring body, described capillary core material is fitted the front-end face of described cavity and outer diameter face;
B, be wound around epoxy by the front-end face of described end cap with the position of described stationary ring body gluing, sealing or spray nickel-base alloy, and described end bracket enclosed being fixed on described stationary ring body;
C, cooling liquid is injected in described cavity by described hand-hole, afterwards described cavity is vacuumized process, make between the maximum temperature of the boiling point of the condensing agent corresponding to the pressure in described cavity under described stationary ring assembly normal working in described cavity and minimum temperature; Finally described hand-hole is closed, complete assembling.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110332314A (en) * | 2019-07-16 | 2019-10-15 | 东营海森密封技术有限责任公司 | A kind of mechanically-sealing apparatus |
| CN110486475A (en) * | 2019-09-12 | 2019-11-22 | 中国石油大学胜利学院 | A kind of wave bullet formula mechanically-sealing apparatus |
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| CN101469912A (en) * | 2007-12-28 | 2009-07-01 | 中国航天科技集团公司第五研究院第五一〇研究所 | Capillary material liquid-storage refrigerating device |
| CN201256509Y (en) * | 2008-06-26 | 2009-06-10 | 汪冰雯 | Radiator |
| CN201949868U (en) * | 2011-01-24 | 2011-08-31 | 昆山密友机械密封有限公司 | Reaction kettle cooling system with structural improvement |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110332314A (en) * | 2019-07-16 | 2019-10-15 | 东营海森密封技术有限责任公司 | A kind of mechanically-sealing apparatus |
| CN110486475A (en) * | 2019-09-12 | 2019-11-22 | 中国石油大学胜利学院 | A kind of wave bullet formula mechanically-sealing apparatus |
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