Background technology
At present; In industrial processes, particularly in the production run of oil-refining chemical, electricity power enterprise, the bearing shell of a lot of rotary system devices is arranged; Particularly bearing shell, the thrust bearing shoe valve of large high-speed fan blower, steam turbine, compressor, cigarette machine etc. all need be used the thermal resistance temperature measuring equipment to its thermometric.Original thermal resistance temperature measuring equipment generally comprises thermal resistance, protective casing and draws lead, and protective casing is enclosed within outside the thermal resistance, draws lead and links to each other with thermal resistance.Original conductor structure of drawing lead employing outside metal screen layer wrapping inner layer tape insulation skin is drawn and is adopted the epoxy bond encapsulation between lead and the protective casing.Because very easily sclerosis of epoxy encapsulation part; And the vibration frequency of bearing shell, thrust bearing shoe valve is very high, draws lead so shake is disconnected easily under the high-frequency vibration, causes unit tile fragment temperature measurement signal to interrupt; Because of unit thermometric and overhead control are interlocks, and then cause whole production line out of service.On the other hand, owing to the extraordinary reason of tile fragment, it is smaller that its temperature element is installed the aperture; General overall diameter is no more than 3.2mm, diameter of bore is no more than 2.8mm; And the lead of metallic shield net and tape insulation skin of drawing lead is because of making reason, and its whole diameter can't be accomplished less than 2.8mm, draws the whole termination of lead can not fill in the temperature element mounting hole; Therefore the lubricating oil in the unit can flow out unit through space between three leads and the space between lead and the metallic shield net; Cause serious run, drip, leak phenomenon, influence the reliability of unit and thermometric, also influence environmental health.
Summary of the invention
It is not fine that the utility model mainly solves original tile fragment thermometric thermal resistance plugging effect, and the lubricating oil in the unit can flow out unit, causes serious run, drip, leak phenomenon, influences the reliability of unit and thermometric, also influences sanitary technical matters; Provide a kind of tile fragment thermometric special-purpose thermal resistance, it is easy for installation and firm, has multiple leak stopping function, and is oil-tight, guarantees the reliability of unit and thermometric, also makes more sanitation and hygiene of environment.
The utility model solve simultaneously original tile fragment thermometric thermal resistance to draw lead disconnected along with the dither of tile fragment shakes easily, cause temperature measurement signal to interrupt, and then cause whole production line technical matters out of service; Provide a kind of tile fragment thermometric special-purpose thermal resistance, it is through the improvement to the syndeton between the protective casing of drawing lead and thermometric thermal resistance, make draw lead be difficult for shaking disconnected, thereby guarantee the transmission of temperature measurement signal, guarantee the normal operation of production line.
The above-mentioned technical matters of the utility model mainly is able to solve through following technical proposals: the armouring lead that the utility model comprises the thermoelectric resistance body of thermometric, is enclosed within the external protective casing of thermometric thermal resistance and links to each other with the thermoelectric resistance body of thermometric; Be arranged with leak stopping oil joint on the described armouring lead; Described leak stopping oil joint comprises threaded connector, oil resistant rubber plug, compresses with metallic gasket and screw shell; The left end of threaded connector links to each other with the unit at tile fragment place; The right-hand member of threaded connector links to each other through screw thread with screw shell; Described oil resistant rubber plug is located in the right-hand member of threaded connector, and described compressing with metallic gasket is located between its right end face and screw shell of oil resistant rubber plug.When threaded connector was connected with screw shell, extruding oil resistant rubber plug used metallic gasket, screw thread to revolve to such an extent that get over into compressing; Push closely more; Improve the sealing property of whole temperature measuring equipment and unit junction greatly, guarantee oil-tightly, have good plugging effect; Improve the reliability of unit and thermometric, also make more sanitation and hygiene of environment.
As preferably; The through hole at the center of described threaded connector comprises tiny cylindrical hole that is positioned at the left side and the truncated cone-shaped through hole that is positioned at the right side; The small end of truncated cone-shaped through hole links to each other with tiny cylindrical hole, and the aperture of the small end of truncated cone-shaped through hole is greater than the aperture of tiny cylindrical hole, and described armouring lead stretches into tiny cylindrical hole; The side of described oil resistant rubber plug is the conical surface of inclination, and the oil resistant rubber plug is positioned at described truncated cone-shaped through hole.Make the lubricating oil in the unit can not ooze out, the conical surface of truncated cone-shaped through hole and oil resistant rubber plug is close to more after guaranteeing simultaneously to push, and sealing effectiveness is better.
As preferably, its right end face of described oil resistant rubber plug is the sphere of evagination, and described compressing with metallic gasket is bowl-type, compresses with the protrusion direction of metallic gasket identical with the protrusion direction of its right end face of oil resistant rubber plug.Can produce better squeezing effect to the oil resistant rubber plug when guaranteeing that threaded connector and screw shell are screwed mutually, improve sealing property.
As preferably; The center of described screw shell is provided with left blind hole and right blind hole; Link to each other through a thin through hole between left side blind hole and the right blind hole, left blind hole and right blind hole all are threaded holes, and the right-hand member of described threaded connector is provided with external thread; Screw shell links to each other through the right-hand member screw thread of left blind hole and threaded connector, and right blind hole is drawn flexible pipe through being threaded.When threaded connector and screw shell are screwed mutually, compress withstood on the hole of left blind hole with metallic gasket at the bottom of, the oil resistant rubber plug produces mutual extruding force with compressing with metallic gasket, improves sealing, further prevents the seepage of oil in the unit.Drawing flexible pipe plays a protective role to the extension lead that is exposed to the outer armouring lead of screw shell and link to each other with the armouring lead.
As preferably, the aperture of the left blind hole of described screw shell is greater than the aperture of right blind hole.
As preferably; The termination that stretches out in the outer armouring lead of screw shell links to each other with extension lead; The junction of armouring lead and extension lead is with the transition connecting pipe of minor diameter, and insulation glue has been filled up in the gap between transition connecting pipe and armouring lead and the extension lead.After armouring lead and extension lead connect, put the transition connecting pipe of minor diameter, with insulation glue filling and sealing, make connection more firm again, both guaranteed the normal transmission of temperature measurement signal, can prevent oil impregnate again, have plugging effect.
As preferably; The outer tube of described armouring lead is a stainless steel flexible hose; The termination point casing of the outer tube of armouring lead is provided with spring clip outside the termination of outer tube outside the protective casing of the thermoelectric resistance body of thermometric, outer tube and protective casing are affixed through spring clip.Easy accessibility has been avoided the trouble of former useful glue fixing, and has avoided being prone to shake break with the glue encapsulation originally drawing the phenomenon of lead, thereby guarantees the transmission of temperature measurement signal, guarantees that production line runs well.
As preferably, described armouring lead is a three-core conductor, and every core lead is combined by many thin wires.The thermoelectric resistance body of thermometric leads to three leads, and every lead is combined by many thin wires, substitutes the mode that original every lead adopts the higher relatively lead of single hardness; Increase the flexibility of lead; The combination of three cores the time can be drawn into the flexible flexible cord of diameter 1.5mm, the outer socket one stainless steel flexible hose of lead, and also three-core conductor and stainless steel flexible hose are the insulation armored; Be used for protecting three-core conductor, make lead be difficult for being worn.
The beneficial effect of the utility model is: life cycle prolongs greatly, and is easy for installation and firm, has multiple plugging effect, guarantees non-leakage machine oil.Even thermal resistance can not take place yet and draw the lead disconnected phenomenon of shaking in unit that vibration frequency is the highest again, guarantee the transmission of temperature measurement signal, unit place production line is run well.
Description of drawings
Fig. 1 is a kind of part decomposition texture synoptic diagram of the utility model.
Fig. 2 is a kind of structural representation of threaded connector in the utility model.
Fig. 3 is a kind of structural representation of screw shell in the utility model.
Thermoelectric resistance body, 2. protective casing, 3. armouring lead, 4. threaded connector of 1. thermometrics among the figure; 5. the oil resistant rubber plug 6. compresses and uses metallic gasket, 7. screw shell, 8. extension lead; 9. transition connecting pipe, 10. insulation glue, 11. spring clipes, 41. tiny cylindrical holes; 42. the truncated cone-shaped through hole, 71. left blind holes, 72. right blind holes, 73. thin through holes.
Embodiment
Pass through embodiment below, and combine accompanying drawing, do further bright specifically the technical scheme of the utility model.
Embodiment 1: the special-purpose thermal resistance of the tile fragment thermometric of present embodiment; As shown in Figure 1, comprise the thermoelectric resistance body 1 of thermometric, be enclosed within the armouring lead 3 that the thermoelectric resistance body 1 outer protective casing 2 of thermometric links to each other with the thermoelectric resistance body 1 of thermometric and be enclosed within the oily joint of leak stopping, the transition connecting pipe 9 on the armouring lead 3.Armouring lead 3 is a three-core conductor, and every core lead is combined by many thin wires.The outer tube of armouring lead 3 is stainless steel flexible hoses; Present embodiment adopts Extension Spring-type stainless steel protection pipe; The termination point casing of the outer tube of armouring lead 3 is outside the protective casing 2 of the thermoelectric resistance body 1 of thermometric; Both junctions put spring clip 11 and chucking again, and outer tube and protective casing 2 are affixed through spring clip 11.Leak stopping oil joint comprises threaded connector 4, oil resistant rubber plug 5, compresses with metallic gasket 6 and screw shell 7.As shown in Figure 2; The through hole at the center of threaded connector 4 comprises tiny cylindrical hole 41 that is positioned at the left side and the truncated cone-shaped through hole 42 that is positioned at the right side; The small end of truncated cone-shaped through hole 42 links to each other with tiny cylindrical hole 41, and the aperture of the small end of truncated cone-shaped through hole 42 is greater than the aperture of tiny cylindrical hole 41.The left end of threaded connector 4 has external thread, links to each other through screw thread with the unit at tile fragment place, and armouring lead 3 stretches into tiny cylindrical hole 41.The right-hand member of threaded connector 4 also has external thread, and the side of oil resistant rubber plug 5 is the conical surface of inclination, and oil resistant rubber plug 5 plugs are in the truncated cone-shaped through hole 42 of the right-hand member of threaded connector 4, and its right end face of oil resistant rubber plug 5 is the sphere of evagination.Compress with metallic gasket 6 between its right end face and screw shell 7 of oil resistant rubber plug 5, compress with metallic gasket 6 and be bowl-type, compress with the protrusion direction of metallic gasket 6 identical with the protrusion direction of its right end face of oil resistant rubber plug 5.As shown in Figure 3; There are left blind hole 71, right blind hole 72 and thin through hole 73 in the center of screw shell 7, and thin through hole 73 is communicated with left blind hole 71 and right blind hole 72, and left blind hole 71 all is a threaded hole with right blind hole 72; The aperture of left side blind hole 71 is greater than the aperture of right blind hole 72; Screw shell 7 links to each other through the right-hand member screw thread of left blind hole 71 and threaded connector 4, compresses with metallic gasket 6 to be positioned at left blind hole 71, and right blind hole 72 is drawn flexible pipe through being threaded.The termination that stretches out in the armouring lead 3 outside the screw shell 7 links to each other with extension lead 8; The junction of armouring lead 3 and extension lead 8 is with the transition connecting pipe 9 of minor diameter; Insulation glue 10 has been filled up in gap between transition connecting pipe 9 and armouring lead 3 and the extension lead 8, and the outside can put again and draw flexible pipe then.
The utility model life cycle prolongs greatly; Through spring clip that the protective casing of armouring lead and temperature element is affixed; Temperature measurement signal is connected firmly and easy accessibility, even the highest unit of vibration frequency can not take place again yet draws the lead disconnected phenomenon of shaking; Guarantee the transmission of temperature measurement signal, unit place production line is run well.And the utlity model has multiple plugging effect, and guarantee non-leakage machine oil, reliability is high, also guarantees the sanitation and hygiene of environment.