CN111256854A - Inner leakage prevention structure of multi-point flexible temperature measuring element - Google Patents
Inner leakage prevention structure of multi-point flexible temperature measuring element Download PDFInfo
- Publication number
- CN111256854A CN111256854A CN202010257854.3A CN202010257854A CN111256854A CN 111256854 A CN111256854 A CN 111256854A CN 202010257854 A CN202010257854 A CN 202010257854A CN 111256854 A CN111256854 A CN 111256854A
- Authority
- CN
- China
- Prior art keywords
- sealing element
- main
- sealing
- temperature measuring
- compression
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/08—Protective devices, e.g. casings
Abstract
The invention discloses an inner leakage prevention structure of a multi-point flexible temperature measuring element, which comprises a main sealing element, wherein one end of the main sealing element is connected with an armor sleeve through a basic connecting element, the other end of the main sealing element is connected with a compression sealing element, the main sealing element is of a hollow structure, an insulating sealing element is arranged on the inner wall of the main sealing element, high-voltage insulating sealant is filled between the inner wall of the main sealing element and the insulating sealing element, the insulating sealing element has a compression deformation self-sealing function, and the temperature resistance is more than or equal to 200 ℃; a cable lead passes through the threading hole on the compression sealing piece and is connected with a temperature measuring element arranged in the main sealing cavity; high-pressure sealant is filled in a threading hole in contact with the pressing sealing cavity of the cable lead; the invention can prevent the medium in the reactor from leaking through the broken armor sleeve, ensure the normal operation of the reactor device and effectively avoid the occurrence of major safety accidents.
Description
Technical Field
The invention relates to the field of temperature detection, in particular to an inner leakage prevention structure of a multi-point flexible temperature measuring element.
Background
At present, in oil refining or chemical industry, use the flexible temperature measurement element of multiple spot to measure temperature in the reactor usually, when using the flexible temperature measurement element of multiple spot to measure, because the environment in the reactor is more complicated, if the component armour of guard action takes place to damage and breaks, then inside high temperature high pressure medium in the reactor can permeate the armour, from the inside direction along temperature measurement element of armour inside, leak then in the local seepage that the leakproofness is not good, cause the temperature measurement element to damage, the unable normal work of reactor, cause great incident easily.
When the leakage point is found, the damaged cold end joint of the temperature measuring element is cut off by using a special tool, a leakage-proof sealing piece is sleeved on the leakage point, and is tightly sealed by adopting a clamping sleeve, so that the leakage blocking effect is achieved, the processing method can process in time at the initial leakage stage, and the processing method cannot be implemented if leakage, particularly flammable and explosive media, is formed; 2. after the cold end of the temperature measuring element is internally connected with wires, the sealant is filled in the armor, and if the armor is cracked, the leakage of a medium cannot be effectively prevented, especially under the state of a high-temperature high-pressure medium.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide an inner leakage prevention structure of a multi-point flexible temperature measuring element, which can effectively prevent the occurrence of safety accidents caused by the leakage of flammable and explosive toxic media in a reactor through a broken armor under the condition that the armor is broken.
In order to achieve the purpose, the invention adopts the following technical scheme:
the inner leakage prevention structure of the multi-point flexible temperature measuring element comprises a main sealing element, wherein one end of the main sealing element is connected with an armor sleeve through a basic connecting element, the other end of the main sealing element is connected with a compression sealing element, the main sealing element is of a hollow structure, a high-voltage insulating sealing element is arranged in a cavity of the main sealing element, high-voltage sealant is filled between the inner wall of the main sealing element and the high-voltage insulating sealing element, the high-voltage insulating sealing element has the characteristic of self sealing through compression deformation, and the temperature resistance is more than; a threading hole is formed in the compression sealing element, and a cable lead passes through the threading hole in the compression sealing element and is connected with a temperature measuring element arranged in the cavity of the main sealing element; the high-voltage insulating sealing element wraps the cable lead, the temperature measuring element and the lead arranged in the cavity of the main sealing element, and plays a role in insulating and isolating the lead; high-pressure sealant is filled in a threading hole in which the cable lead is in contact with the compression sealing element; the other end of the temperature measuring element is arranged in the armor.
Further, the high-voltage insulating sealing element comprises a ceramic sealing element, a through hole is formed in the ceramic sealing element and used for penetrating through the cable lead, the temperature measuring element and the lead, high-voltage sealant is filled between the main sealing element and the ceramic sealing element and between the ceramic sealing element and the cable lead, between the ceramic sealing element and the temperature measuring element and between the ceramic sealing element and the lead, the high-voltage sealant is tightly pressed and compacted through the compression sealing element, and is solidified for 10 hours through physical and chemical reactions, so that the high-voltage sealant and the ceramic sealing element are fused and solidified, and the bearing pressure.
Further, the armor is in brazed connection with a basic connecting piece, and the pressure bearing of the brazed connection position of the basic connecting piece and the temperature element armor is more than 40 MPa.
Further, the sealing external thread of the primary connecting piece is connected with the sealing internal thread of the primary seal.
Further, the compression seal is threadably connected to the main seal for compressing the insulating seal within the main seal.
Furthermore, the insulating sealing element is tightly screwed and compacted through the compression sealing element, and is solidified for 10 hours through physical and chemical reaction, and the pressure bearing is more than 50 Mpa.
Further, the main seal is hexagonal or circular in cross-section.
Further, the basic connecting piece, the main sealing piece and the compression sealing piece are all machined by forging materials.
The invention has the beneficial effects that:
1. when the multipoint flexible temperature measuring element is used, if the armor is broken, the inner leakage prevention structure can prevent a medium in the reactor from leaking through the broken armor, so that the normal operation of the reactor device is guaranteed, major safety accidents are effectively avoided, the operation cost of production and safety management is effectively reduced, and meanwhile, under the condition that the armor is broken, subsequent countermeasures are not needed, and the labor cost is reduced;
2. the reactor is complex in environment, various in media in the reactor, especially flammable and explosive toxic media, and the invention effectively prevents safety accidents caused by leakage of the media in the reactor through the broken armor under the condition that the armor is broken, thereby ensuring the life safety and property safety of workers.
Drawings
FIG. 1 is a schematic exterior view of the present invention;
fig. 2 is a schematic view of the internal structure of the present invention.
Reference numerals: 1. a base connector; 2. a primary seal; 3. compressing the seal; 4. a high voltage insulating seal; 5. high-pressure sealant; 6. brazing points; 7. a temperature element armor; 8. and (4) cable leads.
Detailed Description
The invention will be further described with reference to the accompanying drawings and the detailed description below:
example one
As shown in figure 1, the invention provides an inner leakage prevention structure of a multipoint flexible temperature measuring element, which comprises a basic connecting piece 1, a main sealing piece 2 and a compression sealing piece 3, wherein one end of the basic connecting piece 1 is in threaded connection with the main sealing piece 2, the other end of the basic connecting piece is in brazing fixed connection with a temperature element armor 7, and the basic connecting piece 1 is connected with a sealing inner thread of the main sealing piece 2 through a sealing outer thread; the main sealing element 2 is of a cavity structure, a temperature measuring element in the cavity of the main sealing element 2 is connected with a cable lead 8, and a high-voltage insulating sealing element 4 formed by combining and installing a ceramic sealing element and high-voltage sealant is arranged in the main sealing element 2; the compression sealing element 3 is provided with a threading hole for a cable lead 8 to penetrate, the compression sealing element 3 is provided with a sealing thread, and the compression sealing element 3 is connected with the main sealing element 2 by the sealing thread and is used for compressing the high-voltage insulating sealing element 4 in the main sealing element 2; the section of the main sealing element 2 is hexagonal or circular; the high-insulation sealing element 4 has the self-sealing performance of compression deformation and can resist temperature more than or equal to 200 ℃; the high-voltage insulating sealing element 4 comprises a ceramic sealing element, a perforation is arranged in the ceramic sealing element and is used for penetrating through a cable lead 8, a temperature measuring element and a lead, high-voltage sealant is filled between the main sealing element 2 and the ceramic sealing element, between the ceramic sealing element and the cable lead, between the temperature measuring element and the lead, the ceramic sealing element and the high-voltage sealant 5 are tightly screwed and compacted through the compression sealing element 3, the high-voltage sealing element and the high-voltage sealant are solidified for 10 hours through physical and chemical reactions in a cavity of the main sealing element 2; the pressure of the brazing point 6 between the basic connecting piece 1 and the temperature element armor 7 is more than 40 Mpa; the basic connecting piece 1, the main sealing piece 2 and the compression sealing piece 3 are all processed by forging materials.
The temperature measuring element mentioned in the application refers to the temperature measuring element of the existing common thermocouple/thermal resistor, namely, the sheathed thermocouple/thermal resistor core comprises a sheath, MgO or Al2O3And (3) powder. The end, far away from the measuring end, of the metal wire of the armored thermocouple/thermal resistance core is respectively connected with a compensation wire in a welding mode, and the metal wire is connected with a corresponding measuring instrument through the compensation wire to form a closed loop for measuring temperature.
The thermocouple/thermal resistor is disposed in the reactor to monitor the temperature in the reactor, and if the temperature element sheath 7 placed on the temperature measuring element in the reactor is broken, the medium in the reactor permeates into the inside of the temperature element sheath 7 and leaks along the temperature element sheath 7 from the reference end of the temperature measuring element, which is the opposite end to the measuring end of the temperature measuring element, but the internal leakage prevention structure of the present invention can be just sealed to prevent the leakage from causing a safety accident.
Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes should fall within the scope of the claims of the present invention.
Claims (7)
1. The inner leakage prevention structure of the multi-point flexible temperature measuring element is characterized by comprising a main sealing element, wherein one end of the main sealing element is connected with an armor sleeve through a basic connecting element, the other end of the main sealing element is connected with a compression sealing element, the main sealing element is of a hollow structure, a high-voltage insulating sealing element is arranged in a cavity of the main sealing element, high-voltage sealant is filled between the inner wall of the main sealing element and the high-voltage insulating sealing element, and the high-voltage insulating sealing element has the self-sealing deformation characteristic under pressure and can resist temperature of more than or; a threading hole is formed in the compression sealing element, and a cable lead passes through the threading hole in the compression sealing element and is connected with a temperature measuring element arranged in the cavity of the main sealing element; the high-voltage insulating sealing element wraps the cable lead, the temperature measuring element and the lead arranged in the cavity of the main sealing element, and plays a role in insulating and isolating the lead; high-pressure sealant is filled in a threading hole in which the cable lead is in contact with the compression sealing element; the other end of the temperature measuring element is arranged in the armor.
2. The structure of claim 1, wherein the high voltage insulating sealing member comprises a ceramic sealing member, the ceramic sealing member has a through hole for passing the cable lead, the temperature measuring element and the lead, the main sealing member and the ceramic sealing member, the ceramic sealing member and the cable lead, the temperature measuring element and the lead are filled with high voltage sealant, the high voltage sealant and the ceramic sealing member are solidified by physical and chemical reaction for 10 hours after being tightly screwed and compacted by the compression sealing member, and the high voltage insulating sealing member is subject to a pressure of more than 50 Mpa.
3. The structure of claim 1 in which the sheaths are brazed to primary connectors that are brazed to the sheaths of the temperature elements under a pressure of > 40 Mpa.
4. The structure of claim 1, wherein the sealing male screw of the primary connecting member is connected to the sealing female screw of the primary sealing member.
5. The structure of claim 1, wherein the compression seal is coupled to the internal threads of the main seal for compressing the insulating seal within the main seal.
6. The structure of claim 1, wherein the main seal has a hexagonal or circular cross-section.
7. The structure of claim 1, wherein the primary connecting member, the primary seal member, and the compression seal member are formed by forging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010257854.3A CN111256854A (en) | 2020-04-03 | 2020-04-03 | Inner leakage prevention structure of multi-point flexible temperature measuring element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010257854.3A CN111256854A (en) | 2020-04-03 | 2020-04-03 | Inner leakage prevention structure of multi-point flexible temperature measuring element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111256854A true CN111256854A (en) | 2020-06-09 |
Family
ID=70950060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010257854.3A Pending CN111256854A (en) | 2020-04-03 | 2020-04-03 | Inner leakage prevention structure of multi-point flexible temperature measuring element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111256854A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111693169A (en) * | 2020-06-10 | 2020-09-22 | 淄博益源工程技术有限公司 | High-pressure multi-point flexible thermocouple sealed by high-pressure threaded connection |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201672984U (en) * | 2009-09-11 | 2010-12-15 | 吴方立 | Thermoelectric couple with leakage-proof, hermetic, safe and pressure-proof device |
| CN201724752U (en) * | 2010-03-24 | 2011-01-26 | 天津市中环温度仪表有限公司 | Leakage resistance type adjustable thermocouple |
| CN203705072U (en) * | 2014-03-10 | 2014-07-09 | 北京京桥热电有限责任公司 | Temperature measuring apparatus |
| CN105806504A (en) * | 2016-03-30 | 2016-07-27 | 宁波艾克威特智能科技有限公司 | High-temperature-resistant cheap metal armored thermocouple and manufacturing method thereof |
| CN205483330U (en) * | 2016-03-18 | 2016-08-17 | 深圳市东河仪表有限公司 | Temperature sensor and sleeve pipe |
| CN106099526A (en) * | 2016-08-18 | 2016-11-09 | 华能无锡电热器材有限公司 | A kind of high temperature resistant, hold the insulation electric installation of high pressure |
| CN207487842U (en) * | 2017-12-13 | 2018-06-12 | 宁波尚仪电子科技有限公司 | A kind of sulfur corrosion resistant leakproof sheathed thermal couple thermal resistance |
-
2020
- 2020-04-03 CN CN202010257854.3A patent/CN111256854A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201672984U (en) * | 2009-09-11 | 2010-12-15 | 吴方立 | Thermoelectric couple with leakage-proof, hermetic, safe and pressure-proof device |
| CN201724752U (en) * | 2010-03-24 | 2011-01-26 | 天津市中环温度仪表有限公司 | Leakage resistance type adjustable thermocouple |
| CN203705072U (en) * | 2014-03-10 | 2014-07-09 | 北京京桥热电有限责任公司 | Temperature measuring apparatus |
| CN205483330U (en) * | 2016-03-18 | 2016-08-17 | 深圳市东河仪表有限公司 | Temperature sensor and sleeve pipe |
| CN105806504A (en) * | 2016-03-30 | 2016-07-27 | 宁波艾克威特智能科技有限公司 | High-temperature-resistant cheap metal armored thermocouple and manufacturing method thereof |
| CN106099526A (en) * | 2016-08-18 | 2016-11-09 | 华能无锡电热器材有限公司 | A kind of high temperature resistant, hold the insulation electric installation of high pressure |
| CN207487842U (en) * | 2017-12-13 | 2018-06-12 | 宁波尚仪电子科技有限公司 | A kind of sulfur corrosion resistant leakproof sheathed thermal couple thermal resistance |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111693169A (en) * | 2020-06-10 | 2020-09-22 | 淄博益源工程技术有限公司 | High-pressure multi-point flexible thermocouple sealed by high-pressure threaded connection |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5833490A (en) | High pressure instrument wire connector | |
| EP1984980B1 (en) | Swagable high-pressure cable connectors having improved sealing means | |
| US9413152B2 (en) | Fault-proof feed-through device | |
| US10457588B2 (en) | Lead-through or connecting element with improved thermal loading capability | |
| US10726978B2 (en) | Feed-throughs for high external pressure applications and method for producing same | |
| CN105741894A (en) | 1E-grade reactor pile core temperature measurement equipment for nuclear power plant | |
| CN111256854A (en) | Inner leakage prevention structure of multi-point flexible temperature measuring element | |
| EP3027949B1 (en) | 4-round thread form | |
| US4441777A (en) | Electrically sealed connector and cable assembly | |
| CN101206144B (en) | High pressure thermojunction of gasification furnace | |
| JP2015050859A (en) | Electric penetration assembly | |
| CN111289134A (en) | Multipoint flexible thermocouple/resistor with conical sealing cavity | |
| CN205582513U (en) | 1E level reactor reactor core temperature measurement equipment for nuclear power station | |
| CN214375434U (en) | Novel optical fiber steel wire rope cap | |
| CN218937592U (en) | High-pressure-resistant internal leakage-proof thermocouple thermometer | |
| CN217765273U (en) | Micro sensor for temperature measurement | |
| CN114566319B (en) | High-pressure oil gas seal structure for wire core of lead | |
| CN203516718U (en) | Sealing device of cable trench | |
| CN103486264A (en) | Cable trench sealing device | |
| CN219164164U (en) | Cable penetration for hot chamber penetration | |
| CN210404189U (en) | Airtight electric connector | |
| CN209515557U (en) | A kind of novel telemetering type SF6 gas density is relay sensor special structure | |
| RU203568U1 (en) | High temperature cable gland for submersible motor | |
| US20030157823A1 (en) | Hermetically sealed nuclear instrumentation connector | |
| CN216851265U (en) | Online plugging device for temperature element |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200609 |