CN202734981U - Thermocouple structure penetratingly installed on pump shell - Google Patents
Thermocouple structure penetratingly installed on pump shell Download PDFInfo
- Publication number
- CN202734981U CN202734981U CN201220269014.XU CN201220269014U CN202734981U CN 202734981 U CN202734981 U CN 202734981U CN 201220269014 U CN201220269014 U CN 201220269014U CN 202734981 U CN202734981 U CN 202734981U
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- thermocouple
- bolt
- axial
- cable
- thermocouple cable
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Abstract
The utility model provides a thermocouple structure penetratingly installed on a pump shell. The thermocouple structure includes a first flexible thermocouple cable, a second flexible thermocouple cable, an armed thermocouple cable with a stainless steel jacket and a bolt for installing the thermocouple structure on the pump shell. The bolt is provided with an axial through hole; the armored thermocouple cable is arranged in the axial through hole of the bolt; two ends of the armored thermocouple cable are respectively connected with the first flexible thermocouple cable and the second flexible thermocouple cable which extend into the axial through hole of the bolt; an epoxy resin layer is sealedly filled and fixed between the surface of the stainless steel jacket of the armored thermocouple cable and the inner wall of the axial through hole of the bolt; and the epoxy resin layer hermetically obstructs the axial through hole of the bolt from a middle portion. The thermocouple structure of the utility model improves convenience in the wiring insdie the pump shell and vibration resistance in the operating process of the thermocouple structure.
Description
Technical field
The utility model relates to a kind of thermocouple structure, relates in particular to a kind of thermocouple structure that is installed on the pump case that runs through.
Background technology
The inner structure of general pump is comparatively complicated; cabling space is narrower; need the local more of bending; and need arrange multiple spot; cause installing space more nervous; if adopt the sheathed structure that is easier to seal when running through pump case when inner cabling because crooked more; owing to the reason armoured thermocouple in space can only be accomplished very thin; be generally diameter 1mm-1.5mm; the factors such as vibration that occur when excessive bending and pump operation can cause the temperature element damage that very easily fractures, because bearing bush temperature is very important for the safe operation of pump; have to shut down and change; for some special industry, the nuclear power station such as 10,000,000,000,000 will cause huge economic loss.
Outer layer insulation layer material with screen layer flexible thermocouple cable is teflon, teflon and epoxy resin are because the close adhesive property of polarity is not good, therefore adopt the temperature element with screen layer flexible thermocouple wire producing when running through pump case, to seal comparatively difficulty, mostly comparatively ripe structure is to adopt the mode of rubber plug and gland nut cooperation when running through at present, the distortion that utilizes nut to compress the rubber plug generation seals, because pump bearing shell lubricating oil perviousness is stronger, and when pump operation because under the acting in conjunction of the slight pressure that centrifugal force produces, this hermetically-sealed construction can not prevent the seepage of lubricating oil fully, because leakage of oil is unfavorable for the safe operation of pump, the lubricating oil of missing can't be recycled economic loss, and on-the-spot owing to its sanitation and hygiene of leakage of oil also extremely difficult assurance, so this structure is not easy to use at important station.
Therefore existing armored thermopair exists in the inner cabling inconvenience of pump case and the lower limitation of resistance to shock, and band screen layer flexible thermocouple wire can not be effectively fixing by epoxy resin layer after running through installation, causes the problem of oil leak.
The utility model content
The technical matters that the utility model solves is: a kind of thermocouple structure that is installed on the pump case that runs through is provided, can satisfies the antivibration requirement of the convenient and run duration of the wiring of pump case inside, can run through the leakage that does not produce lubricating oil when being installed in pump case again.
The technical solution of the utility model is: a kind of thermocouple structure that is installed on the pump case that runs through, it is characterized in that, comprise the first flexible thermocouple cable, the second flexible thermocouple cable, have the armoured thermocouple cable of stainless steel casing and be used for being installed in bolt on the pump case, described bolt has axial through bore, described armoured thermocouple cable is arranged in the axial through bore of described bolt, the two ends of armoured thermocouple cable respectively with the first flexible thermocouple cable that extend in the bolt axial through bore, the second flexible thermocouple cable connects, the sealing filling is fixed with epoxy resin layer between the inwall of the stainless steel casing of armoured thermocouple cable surface and bolt axial through bore, this epoxy resin layer with the axial through bore of bolt from the middle part airtight partition.
The end of described the first flexible thermocouple cable is connected with the stainless steel temperature-sensitive head.
Described stainless steel temperature-sensitive head is provided with blind hole, and the end of described the first flexible thermocouple cable is fastened in the described blind hole by epoxy resin.
One end of the axial through bore of described bolt is provided with ring baffle.
Described the second flexible thermocouple cable interference fit is passed ring baffle.
The inwall of described bolt axial through bore is provided with screw thread.
Cover has gasket seal on the described bolt.
The material of described gasket seal is red copper.
The beneficial effects of the utility model are: when the utility model uses, the bolt screw-in is installed on the pump case, because armoured thermocouple cable has stainless steel casing, can realize that sealing is bonding by epoxy resin layer between the axial through bore inwall of stainless steel casing and bolt, since the stainless steel casing of armoured thermocouple cable can be effectively and epoxy resin layer seal and be adhesively fixed, overcome in the prior art and deposited the shortcoming that can not realize good bonding between the flexible cable and epoxy resin, therefore the utility model has improved sealing property of the present utility model, the two ends of armoured thermocouple cable are connected with respectively the first flexible thermocouple cable and the second flexible thermocouple cable simultaneously, the first flexible thermocouple cable and the second flexible thermocouple cable have good pliability, oil resistant, not easy to wear, easy fracture not, the characteristics such as bending that can minor radius, the wiring that can satisfy pump case inside is convenient, has improved the resistance to shock in the utility model work.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
Referring to Fig. 1, a kind of thermocouple structure that is installed on the pump case that runs through, comprise the first flexible thermocouple cable 1, the second flexible thermocouple cable 2, have the armoured thermocouple cable 3 of stainless steel casing and be used for being installed in bolt 4 on the pump case, bolt 4 has axial through bore, armoured thermocouple cable 3 is arranged in the axial through bore of bolt 4, the two ends of armoured thermocouple cable 3 respectively with the first flexible thermocouple cable 1 that extend in bolt 4 axial through bore, the second flexible thermocouple cable 2 connects, the sealing filling is fixed with epoxy resin layer 5 between the inwall of the stainless steel casing of armoured thermocouple cable 3 surface and bolt 4 axial through bore, this epoxy resin layer 5 with the axial through bore of bolt 4 from the middle part airtight partition.The end of the first flexible thermocouple cable 1 is connected with stainless steel temperature-sensitive head 6.Stainless steel temperature-sensitive head 6 is provided with blind hole, the end of the first flexible thermocouple cable 1 is fastened in the blind hole by epoxy resin, stainless steel temperature-sensitive head 6 be achieved in that first infusion epoxy resin in the blind hole of stainless steel temperature-sensitive head 6 being connected of the first flexible thermocouple cable 1, after the first flexible thermocouple cable 1 behind the hot junction has been welded in insertion, before the epoxy resin drying, adopt mechanical system to compress, make it into as a whole, difficult drop-off, because the again mode of mechanical compaction of epoxy resin of building first that herein adopts, can prevent effectively that lubricating oil is by infiltering the first flexible thermocouple cable 1 inside herein, by the risk of the first flexible thermocouple cable 1 internal leakage, strengthened leak preventing effect of the present utility model again.One end of the axial through bore of bolt 4 is provided with ring baffle 7.The second flexible thermocouple cable 2 interference fit are passed ring baffle 7.The inwall of bolt 4 axial through bore is provided with screw thread, thus the cementability between ring stiffener epoxy layer 5 and bolt 4 axial through bore.Gasket seal 8, the material of gasket seal 8 are arranged is red copper to cover on the bolt 4, and gasket seal 8 has guaranteed that the sealing between the utility model and the pump case installs.
Claims (8)
1. one kind runs through the thermocouple structure that is installed on the pump case, it is characterized in that: comprise the first flexible thermocouple cable (1), the second flexible thermocouple cable (2), have the armoured thermocouple cable (3) of stainless steel casing and be used for being installed in bolt (4) on the pump case, described bolt (4) has axial through bore, described armoured thermocouple cable (3) is arranged in the axial through bore of described bolt (4), the two ends of armoured thermocouple cable (3) respectively with the first flexible thermocouple cable (1) that extend in bolt (4) axial through bore, the second flexible thermocouple cable (2) connects, the sealing filling is fixed with epoxy resin layer (5) between the inwall of the stainless steel casing of armoured thermocouple cable (3) surface and bolt (4) axial through bore, this epoxy resin layer (5) with the axial through bore of bolt (4) from the middle part airtight partition.
2. according to the thermocouple structure that is installed on the pump case that runs through claimed in claim 1, it is characterized in that: the end of described the first flexible thermocouple cable (1) is connected with stainless steel temperature-sensitive head (6).
3. according to the thermocouple structure that is installed on the pump case that runs through claimed in claim 2, it is characterized in that: described stainless steel temperature-sensitive head (6) is provided with blind hole, and the end of described the first flexible thermocouple cable (1) is fastened in the described blind hole by epoxy resin.
4. according to the thermocouple structure that is installed on the pump case that runs through claimed in claim 1, it is characterized in that: an end of the axial through bore of described bolt (4) is provided with ring baffle (7).
5. according to the thermocouple structure that is installed on the pump case that runs through claimed in claim 4, it is characterized in that: described the second flexible thermocouple cable (2) interference fit is passed ring baffle (7).
6. according to the thermocouple structure that is installed on the pump case that runs through claimed in claim 1, it is characterized in that: the inwall of described bolt (4) axial through bore is provided with screw thread.
7. according to the thermocouple structure that is installed on the pump case that runs through claimed in claim 1, it is characterized in that: the upper cover of described bolt (4) has gasket seal (8).
8. according to the thermocouple structure that is installed on the pump case that runs through claimed in claim 7, it is characterized in that: the material of described gasket seal (8) is red copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220269014.XU CN202734981U (en) | 2012-06-08 | 2012-06-08 | Thermocouple structure penetratingly installed on pump shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220269014.XU CN202734981U (en) | 2012-06-08 | 2012-06-08 | Thermocouple structure penetratingly installed on pump shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202734981U true CN202734981U (en) | 2013-02-13 |
Family
ID=47660668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220269014.XU Expired - Lifetime CN202734981U (en) | 2012-06-08 | 2012-06-08 | Thermocouple structure penetratingly installed on pump shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202734981U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006896A (en) * | 2014-06-06 | 2014-08-27 | 哈尔滨电气动力装备有限公司 | Device for measuring temperature before three-level seal of 300MW nuclear main pump |
| CN104677516A (en) * | 2013-12-02 | 2015-06-03 | 江西昌河航空工业有限公司 | High-strength high-gas-tightness quick-connecting type temperature measuring feed device |
-
2012
- 2012-06-08 CN CN201220269014.XU patent/CN202734981U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104677516A (en) * | 2013-12-02 | 2015-06-03 | 江西昌河航空工业有限公司 | High-strength high-gas-tightness quick-connecting type temperature measuring feed device |
| CN104006896A (en) * | 2014-06-06 | 2014-08-27 | 哈尔滨电气动力装备有限公司 | Device for measuring temperature before three-level seal of 300MW nuclear main pump |
| CN104006896B (en) * | 2014-06-06 | 2016-05-25 | 哈尔滨电气动力装备有限公司 | Temperature measuring equipment before three grades of sealings of 300MW core main pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130213 |