CN102661810B - Thermocouple sealing structure for gasification furnace - Google Patents
Thermocouple sealing structure for gasification furnace Download PDFInfo
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- CN102661810B CN102661810B CN201210187655.5A CN201210187655A CN102661810B CN 102661810 B CN102661810 B CN 102661810B CN 201210187655 A CN201210187655 A CN 201210187655A CN 102661810 B CN102661810 B CN 102661810B
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Abstract
The invention provides a thermocouple sealing structure for a gasification furnace, which comprises an upper sealing flange. The thermocouple sealing structure is characterized by further comprising a first support cylinder and a second support cylinder, wherein two ends of the first support cylinder are respectively welded with a central hole of the upper sealing flange and one end of the second support cylinder in a sealing way; the other end of the second support cylinder is welded with a circular sealing cover; a central hole of the circular sealing cover is welded with a terminal junction box connecting pipe in a sealing way; the inner wall of the first support cylinder is welded with a connecting ring in the sealing way; a ring hole of the connecting ring is internally provided with a support connecting screw rod; the head of the support connecting screw rod extends into the second support cylinder, and the tail of the support connecting screw rod extends out of the first support cylinder; and a sealing device is arranged between the support connecting screw rod and the ring hole of the connecting ring. The thermocouple sealing structure solves the sealing problem of an outgoing line at the cold end of a thermocouple, thus improving the sealing stability and being high in safety and reliability for the sealing.
Description
Technical field
The present invention relates to a kind of thermopair, relate in particular to a kind of thermopair hermetically-sealed construction for gasification furnace.
Background technology
Thermopair is temperature element conventional in temperature measuring instrument, is conductor two ends by two kinds of heterogeneities while being bonded into loop, when two abutment electric thermo-couple temperatures are when different, will in loop, produce thermocurrent.When if the working end of thermopair and reference end have the temperature difference, Displaying Meter will indicate the corresponding temperature value of thermoelectrical potential that thermopair produces.The moving heat of thermoelectricity of thermopair will raise and increase along with measuring junction temperature, and its size is only relevant with the temperature at thermocouple material and two ends, irrelevant with length, the diameter of thermode.Referring to Fig. 2, the cold junction hermetically-sealed construction of existing thermopair is such: by sealing upper flange 1 and armoring lead wire 13 welding, the cold junction upper end that metal lead wire 15 is realized thermopair by electric insulating sealant 14 sealings seals, by sealing upper flange 1 and sealing lower flange (this is not shown) to realize thermocouple cold junction and pyrometer fire-end and integral sealing, terminal junction box connecting pipe 5 welds and is connected connecting terminal box with sealing upper flange 1, metal lead wire 15 access connecting terminal box terminals are to realize the signal output of thermopair, existing this structure due to the thermal expansivity of electric insulating sealant 14 and thermal expansivity have certain difference, because the higher radiations heat energy of pyrometer fire-end causes metal lead wire 15 and sealing upper flange 1, between electric insulating sealant 14, sealing effectiveness is difficult to guarantee, cannot guarantee stability and the reliability of its sealing.
Summary of the invention
The technical matters that the present invention solves is: a kind of thermopair hermetically-sealed construction for gasification furnace is provided, produces the problem that sealing effectiveness reduces after having solved electric insulating sealant expanded by heating of the prior art.
Technical scheme of the present invention is: a kind of thermopair hermetically-sealed construction for gasification furnace, comprise sealing upper flange, it is characterized in that, also comprise the first support tube and the second support tube, the two ends of described the first support tube respectively with sealing upper flange center pit, one end seal welding of the second support tube, the other end of the second support tube is welded with annular seal lid, the center pit seal weld of described annular seal lid is connected to terminal junction box connecting pipe, the inner wall sealing of described the first support tube is welded with abutment ring, in the annular distance of described abutment ring, be provided with support and connection screw rod, the head of this support and connection screw rod stretches into the second support tube, the afterbody of support and connection screw rod extends the first support tube, between support and connection screw rod and the annular distance of abutment ring, be provided with packoff.
Described packoff comprises the upper insulator seal ring on described support and connection screw rod and lower insulator seal ring by threaded engagement, the axial cross section of described upper insulator seal ring and described lower insulator seal ring is all " protruding " font, microcephaly's section of upper insulator seal ring and microcephaly's section of lower insulator seal ring are closely inserted respectively in the annular distance of described abutment ring, and microcephaly's section of microcephaly's section of upper insulator seal ring, lower insulator seal ring respectively and between the inwall of abutment ring annular distance, form primary sealing area, secondary sealing area.
Described packoff also comprises sealing hold-down ring, spring washer and the gland nut being set on support and connection screw rod, described sealing hold-down ring withstands the major part section end face of described lower insulator seal ring, and the step surface of the step surface of described upper insulator seal ring major part section, lower insulator seal ring major part section forms the 3rd sealing surface, the 4th sealing surface respectively and between the upper surface of abutment ring, lower surface.
Described abutment ring has two annular distances, is respectively equipped with support and connection screw rod in each annular distance.
The invention has the beneficial effects as follows:
1, seal welding between abutment ring of the present invention and the first support tube inwall, between support and connection screw rod and the annular distance of abutment ring, be provided with packoff simultaneously, microcephaly's section of microcephaly's section of the upper insulator seal ring of packoff, lower insulator seal ring respectively and between the inwall of abutment ring annular distance, form primary sealing area, secondary sealing area, the afterbody of support and connection screw rod is as the conductor of extension line, the invention solves the sealing problem of thermocouple cold junction extension line, improved the stability of sealing, the reliability of the safe and sealing of sealing.
2, due to the step surface of described upper insulator seal ring major part section, the step surface of lower insulator seal ring major part section forms the 3rd sealing surface, the 4th sealing surface respectively and between the upper surface of abutment ring, lower surface, therefore the present invention further improved sealing stability, the reliability of the safe and sealing of sealing.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of prior art.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described:
Referring to Fig. 1, a kind of thermopair hermetically-sealed construction for gasification furnace, comprise sealing upper flange 1, also comprise the first support tube 2 and the second support tube 3, the two ends of described the first support tube 2 respectively with sealing upper flange 1 center pit, one end seal welding of the second support tube 3, the other end of the second support tube 3 is welded with annular seal lid 4, the center pit seal weld of described annular seal lid 4 is connected to terminal junction box connecting pipe 5, the inner wall sealing of described the first support tube 2 is welded with abutment ring 6, in the annular distance of described abutment ring 6, be provided with support and connection screw rod 7, the head of this support and connection screw rod 7 stretches into the second support tube 2, the afterbody of support and connection screw rod 7 extends the first support tube 2, between the annular distance of support and connection screw rod 7 and abutment ring 6, be provided with packoff.Packoff comprises by threaded engagement upper insulator seal ring 8 and the lower insulator seal ring 9 on support and connection screw rod 7, the axial cross section of described upper insulator seal ring 8 and described lower insulator seal ring 9 is all " protruding " font, microcephaly's section of upper insulator seal ring 8 and microcephaly's section of lower insulator seal ring 9 are closely inserted respectively in the annular distance of described abutment ring 6, between the inwall of microcephaly's section of upper insulator seal ring 8 and abutment ring 6 annular distances, form primary sealing area, between microcephaly's section of lower insulator seal ring 9 and the inwall of abutment ring 6 annular distances, form secondary sealing area.Described packoff also comprises sealing hold-down ring 10, spring washer 11 and the gland nut 12 being set on support and connection screw rod 7, described sealing hold-down ring 10 withstands the major part section end face of described lower insulator seal ring 9, between the step surface of described upper insulator seal ring 8 major part sections and the upper surface of abutment ring 6, form the 3rd sealing surface, between the step surface of lower insulator seal ring 9 major part sections and the lower surface of abutment ring 6, form the 4th sealing surface.
In the present embodiment, described abutment ring 6 has two annular distances, is respectively equipped with support and connection screw rod 7 in each annular distance.The afterbody of support and connection screw rod 7 is used for connecting thermocouple cold junction extension line.Between two support and connection screw rods 7 and two annular distances of abutment ring 6, be respectively arranged with above-mentioned packoff, the structure of two packoffs is identical.The tail end of each connecting screw rod 7 is respectively equipped with for connecting the wiring nut 16 of thermocouple cold junction extension line.Between microcephaly's section end face of microcephaly's section end face of described upper insulator seal ring 8 and described lower insulator seal ring 9, leave clearance distance.
Claims (3)
1. the thermopair hermetically-sealed construction for gasification furnace, comprise sealing upper flange (1), it is characterized in that: also comprise the first support tube (2) and the second support tube (3), the two ends of described the first support tube (2) respectively with sealing upper flange (1) center pit, one end seal welding of the second support tube (3), the other end of the second support tube (3) is welded with annular seal lid (4), the center pit seal weld of described annular seal lid (4) is connected to terminal junction box connecting pipe (5), the inner wall sealing of described the first support tube (2) is welded with abutment ring (6), in the annular distance of described abutment ring (6), be provided with support and connection screw rod (7), the head of this support and connection screw rod (7) stretches into the second support tube (2), the afterbody of support and connection screw rod (7) extends the first support tube (2), between the annular distance of support and connection screw rod (7) and abutment ring (6), be provided with packoff,
Described packoff comprises by threaded engagement upper insulator seal ring (8) and the lower insulator seal ring (9) on described support and connection screw rod (7), the axial cross section of described upper insulator seal ring (8) and described lower insulator seal ring (9) is all " protruding " font, microcephaly's section of microcephaly's section of upper insulator seal ring (8) and lower insulator seal ring (9) is closely inserted respectively in the annular distance of described abutment ring (6), microcephaly's section of upper insulator seal ring (8), microcephaly's section of lower insulator seal ring (9) forms primary sealing area respectively and between the inwall of abutment ring (6) annular distance, secondary sealing area,
Between microcephaly's section end face of microcephaly's section end face of described upper insulator seal ring (8) and described lower insulator seal ring (9), leave clearance distance.
2. according to the thermopair hermetically-sealed construction for gasification furnace claimed in claim 1, it is characterized in that: described packoff also comprises sealing hold-down ring (10), spring washer (11) and the gland nut (12) being set on support and connection screw rod (7), described sealing hold-down ring (10) withstands the major part section end face of described lower insulator seal ring (9), and the step surface of the step surface of described upper insulator seal ring (8) major part section, lower insulator seal ring (9) major part section forms the 3rd sealing surface, the 4th sealing surface respectively and between the upper surface of abutment ring (6), lower surface.
3. according to the thermopair hermetically-sealed construction for gasification furnace claimed in claim 1, it is characterized in that: described abutment ring (6) has two annular distances, in each annular distance, be respectively equipped with support and connection screw rod (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210187655.5A CN102661810B (en) | 2012-06-08 | 2012-06-08 | Thermocouple sealing structure for gasification furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210187655.5A CN102661810B (en) | 2012-06-08 | 2012-06-08 | Thermocouple sealing structure for gasification furnace |
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| Publication Number | Publication Date |
|---|---|
| CN102661810A CN102661810A (en) | 2012-09-12 |
| CN102661810B true CN102661810B (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210187655.5A Active CN102661810B (en) | 2012-06-08 | 2012-06-08 | Thermocouple sealing structure for gasification furnace |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3911747A (en) * | 1973-11-09 | 1975-10-14 | Robert B Sivyer | Thermal weld monitoring device |
| US4510343A (en) * | 1984-04-09 | 1985-04-09 | Sivyer Robert B | Thermowell apparatus |
| CN101858790A (en) * | 2010-04-27 | 2010-10-13 | 新疆三叶管道技术有限责任公司 | Pressed punching production stoppage-free temperature measuring method for pipeline |
| CN202033122U (en) * | 2011-03-09 | 2011-11-09 | 天津市中环温度仪表有限公司 | Removable single-support multi-point thermocouple for reactor |
| CN202734990U (en) * | 2012-06-08 | 2013-02-13 | 重庆川仪十七厂有限公司 | Thermocouple seal structure used for gasification furnace |
-
2012
- 2012-06-08 CN CN201210187655.5A patent/CN102661810B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3911747A (en) * | 1973-11-09 | 1975-10-14 | Robert B Sivyer | Thermal weld monitoring device |
| US4510343A (en) * | 1984-04-09 | 1985-04-09 | Sivyer Robert B | Thermowell apparatus |
| CN101858790A (en) * | 2010-04-27 | 2010-10-13 | 新疆三叶管道技术有限责任公司 | Pressed punching production stoppage-free temperature measuring method for pipeline |
| CN202033122U (en) * | 2011-03-09 | 2011-11-09 | 天津市中环温度仪表有限公司 | Removable single-support multi-point thermocouple for reactor |
| CN202734990U (en) * | 2012-06-08 | 2013-02-13 | 重庆川仪十七厂有限公司 | Thermocouple seal structure used for gasification furnace |
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| CN102661810A (en) | 2012-09-12 |
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