CN111322406A - Sealing oil separation structure and method for signal wire of unit instrument - Google Patents
Sealing oil separation structure and method for signal wire of unit instrument Download PDFInfo
- Publication number
- CN111322406A CN111322406A CN201911283826.2A CN201911283826A CN111322406A CN 111322406 A CN111322406 A CN 111322406A CN 201911283826 A CN201911283826 A CN 201911283826A CN 111322406 A CN111322406 A CN 111322406A
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- wire
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- sealing
- out hole
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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
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
- F16J15/102—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by material
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
- H02G3/0462—Tubings, i.e. having a closed section
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Connector Housings Or Holding Contact Members (AREA)
- Installation Of Indoor Wiring (AREA)
- Insertion, Bundling And Securing Of Wires For Electric Apparatuses (AREA)
Abstract
The invention discloses a sealing oil separation structure for a unit instrument signal wire, wherein a wire leading-out hole is formed in the outer wall of a unit, a protection tube is arranged between the wire leading-out hole and an instrument field explosion-proof junction box, the protection tube is provided with a section of vertical tube, and the unit instrument signal wire extends out of the wire leading-out hole, penetrates through the protection tube and is connected to an instrument main control wire in the instrument field explosion-proof junction box; a sealing structure is arranged between the signal wire of the unit instrument and the vertical pipe, and comprises a rubber plug and a sealing adhesive layer; the horizontal position of the central axis of the lead wire leading-out hole is lower than that of the lower end of the sealing structure. The invention also provides a sealing oil separation method for the signal wire of the unit instrument. The invention has reasonable structure, easily obtained materials, convenient assembly and disassembly of parts and can be repeatedly used.
Description
Technical Field
The invention belongs to the field of installation and connection of probes of a unit instrument, and particularly relates to a sealing oil separation structure and method for a signal wire of the unit instrument.
Background
In a modern oil refining chemical device, various large units are core equipment. In order to ensure the safe operation of the unit, a large number of various instrument measurement probes are usually designed to monitor the operation state of the unit in real time so that an operator can analyze and judge the operation condition of the unit. Various instrument probes adopted by the unit at the present stage are all contacted with a lubricating oil system, and the installation modes of the various instrument probes are complicated and are limited by the field installation conditions of the unit. The conventional sealing method is usually used for sealing near the leading-out point of a unit bearing box, so that the phenomena of lubricating oil leakage, oil leakage and the like are very easy to occur. On one hand, the phenomenon causes the loss of lubricating oil and the deterioration of the field environment, and on the other hand, if a high-temperature medium exists near the leakage point of the lubricating oil, safety accidents such as fire disasters and the like are easy to happen, huge economic loss is caused, and serious social influence is brought.
When a traditional unit instrument signal wire is led out from the vicinity of a unit bearing box, glue is usually smeared at the leading-out position of the bearing box for fixing and sealing, so that the leakage of lubricating oil in the unit is prevented. The method is influenced by the cleanliness of a sealing surface, the offset of the sealing position of a sealing gasket, the plugging uniformity of a sealant, high temperature due to the close proximity of the unit body, direct impact of lubricating oil on a sealing point and other severe environments and conditions, and can not realize complete sealing of the lubricating oil.
The invention content is as follows:
the invention aims to provide a sealing oil-separating structure for a signal wire of a unit instrument, which can solve the problem of preventing lubricating oil from leaking from the leading-out position of the signal wire of the unit bearing box instrument so as to overcome the problems in the background technology.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a sealed oil separation structure for a unit instrument signal wire is characterized in that a wire leading-out hole is formed in the outer wall of a unit, a protection tube is arranged between the wire leading-out hole and an instrument field explosion-proof junction box, the protection tube is provided with a section of vertical tube, and the unit instrument signal wire extends out of the wire leading-out hole and penetrates through the protection tube to be connected to an instrument main control wire in the instrument field explosion-proof junction box; a sealing structure is arranged between the signal wire of the unit instrument and the vertical pipe, and comprises a rubber plug and a sealing adhesive layer; the horizontal position of the central axis of the lead wire leading-out hole is lower than that of the lower end of the sealing structure.
Preferably, the protection tube is a Z-shaped tube.
Preferably, the protection tube comprises a hot galvanizing hexagonal outer wire, a hot galvanizing inner wire elbow, a vertical tube, an instrument explosion-proof threading elbow and an instrument explosion-proof flexible connection tube which are sequentially arranged from the connection lead leading-out hole to the instrument connection site explosion-proof junction box.
Preferably, the vertical stand pipe is hot-galvanized external short wire.
Preferably, the rubber buffer is round platform type resistant oil rubber buffer, and the through-hole that supplies unit instrument signal conductor to pass is seted up at the center of rubber buffer, and the rubber plug forms the tight fit structure between the inner wall of vertical standpipe and the outer wall of unit instrument signal conductor.
Preferably, the maximum diameter of rubber buffer is greater than the internal diameter of vertical standpipe, and the diameter of through-hole is less than the maximum diameter of unit instrument signal conductor.
Preferably, the rubber stopper is provided with a sealing glue layer formed by pouring.
Preferably, the thickness of the sealant layer is 6-10 mm.
The invention also provides a sealing oil separation method for the signal wire of the unit instrument, wherein the outer wall of the unit is provided with a wire leading-out hole:
a protective tube is arranged between the lead leading-out hole and the instrument field explosion-proof junction box;
making one section of the protection pipe be an upright vertical pipe;
extending a unit instrument signal wire out of the wire leading-out hole, and connecting the wire to an instrument main control wire in an instrument field explosion-proof junction box through a protection tube;
a sealing structure is arranged between the unit instrument signal conductor and the vertical pipe;
the horizontal position of the lower end of the sealing structure is higher than the horizontal position of the central axis of the lead-out hole.
Preferably, the sealing structure comprises a rubber plug and a sealing glue layer;
a rubber plug is arranged in the vertical pipe, a through hole is arranged at the center of the rubber plug, and a signal wire of the group instrument passes through the through hole;
the rubber plug is plugged between the inner wall of the vertical pipe and the outer wall of the unit instrument signal wire to form a tight fit structure;
and pouring the sealant above the rubber plug, and curing the sealant to form a sealant layer for not less than 24 hours.
The invention has the beneficial effects that: by utilizing the characteristic of the self-flow of the processed round-table oil-resistant rubber plug and the liquid oil-resistant sealant, the rubber plug and the sealant can completely seal the wire of the instrument and the metal protection tube on the basis of not changing the original installation mode of the instrument, thereby thoroughly solving the problem of lubricating oil leakage.
The invention does not change the installation type of the instrument of the machine set; the static sealing point of the instrument wire is moved from the position of a unit bearing box to the inside of a vertical pipe of a Z-shaped instrument wire metal protection pipe, lubricating oil and oil mist condensate which enter the Z-shaped instrument wire metal protection pipe automatically flow back to the unit bearing box by utilizing the characteristic that the sealing section of the vertical pipe is higher than the instrument wire leading-out opening of the unit bearing box, the isolation of the lubricating oil and the lubricating oil mist is needed by changing the common sealing mode, and the required sealing requirement can be met only by isolating the lubricating oil mist.
According to the invention, the liquid oil-resistant sealant is used for soaking and filling, air and gaps are eliminated, and the extrusion sealing function of the truncated cone type oil-resistant rubber plug is combined, so that double-layer sealing is realized, and the problem of lubricating oil leakage of a signal wire of a unit instrument is thoroughly solved; the invention has reasonable structure, easily obtained materials, convenient assembly and disassembly of parts and can be repeatedly used.
Drawings
Figure 1 is a schematic view of the overall structure of the present invention,
fig. 2 is a schematic cross-sectional structure diagram according to an embodiment of the present invention.
In the figure: 1. the device comprises a unit instrument signal wire 2, a wire leading-out hole 3, a hot galvanizing hexagonal outer wire 4, a hot galvanizing inner wire elbow, a vertical pipe 5, an instrument explosion-proof threading elbow 6, an instrument explosion-proof flexible connecting pipe 7, an instrument on-site explosion-proof junction box 8, an instrument on-site explosion-proof junction box 9, a rubber plug 10, a sealant layer 11 and a unit outer wall.
Detailed Description
The invention is further described below with reference to the accompanying drawings and examples.
Example one
A sealed oil separation structure for a unit instrument signal wire 1 is characterized in that a wire leading-out hole 2 is formed in the outer wall 11 of a unit, a protection tube is arranged between the wire leading-out hole 2 and an instrument site explosion-proof junction box 8, the protection tube is provided with a section of vertical tube 5, and the unit instrument signal wire 1 extends out of the wire leading-out hole 2, penetrates through the protection tube and is connected to an instrument main control wire in the instrument site explosion-proof junction box 8; a sealing structure is arranged between the unit instrument signal conductor 1 and the vertical pipe 5, and the sealing structure comprises a rubber plug 9 and a sealing glue layer 10.
The protection tube is a Z-shaped metal protection tube.
The protection tube comprises a hot galvanizing hexagonal outer wire 3, a hot galvanizing inner wire elbow 4, a vertical tube 5, an instrument explosion-proof wire elbow 6 and an instrument explosion-proof flexible connection tube 7 which are sequentially arranged from a connection lead leading-out hole 2 to a connection instrument field explosion-proof junction box 8.
The vertical tube 5 is hot galvanizing external short wires.
The rubber buffer 9 is a round table type oil-resistant rubber buffer 9, a through hole for the unit instrument signal conductor 1 to pass through is formed in the center of the rubber buffer 9, and the rubber buffer 9 forms a tight fit structure between the inner wall of the vertical tube 5 and the outer wall of the unit instrument signal conductor 1.
The maximum diameter of rubber buffer 9 is greater than the internal diameter of vertical standpipe 5, and the diameter of through-hole is less than the maximum diameter of unit instrument signal conductor 1.
A sealing glue layer 10 which is formed by pouring is arranged above the rubber plug 9.
The thickness of the sealant layer 10 is 6-10 mm.
The horizontal position of the central axis of the lead wire leading-out hole 2 is lower than that of the lower end of the sealing structure.
As shown in fig. 1, the sealing oil-separating structure of the instrument signal conductor 1 of the present invention is: the instrument signal wire penetrates out of an instrument wire leading-out hole 2 of the unit shell, and enters an instrument main control wire from a control system through a hot galvanizing hexagonal outer wire 3, a hot galvanizing inner wire elbow 4, a hot galvanizing outer wire short wire, an instrument explosion-proof threading elbow 6 and an instrument explosion-proof flexible connecting pipe 7 to be connected with an instrument main control wire in an instrument field explosion-proof junction box 8.
The Z-shaped protection tube structure consisting of the hot galvanizing hexagonal outer wire 3, the hot galvanizing inner wire elbow 4, the hot galvanizing outer wire short wire and the instrument explosion-proof threading elbow 6 must comprise a section of vertical tube 5 (the hot galvanizing outer wire short wire is shown in figure 2), and the method of the invention needs to utilize the section of vertical tube 5 to realize the final sealing function.
The long diameter of the round platform type oil-resistant rubber plug 9 is 1-2mm larger than the diameter of the inner wall of the hot galvanizing outer wire short wire, and the diameter of the instrument wire penetrating through the middle opening of the round platform type oil-resistant rubber plug 9 is slightly smaller than the outer diameter of the instrument wire.
The long diameter face of the round platform type oil-resistant rubber plug 9 is ensured to be upward when the round platform type oil-resistant rubber plug is installed, the outer diameter of the round platform type oil-resistant rubber plug and the inner wall of the hot galvanizing outer wire short wire can be ensured after the round platform type oil-resistant rubber plug is installed, and the central opening of the round platform type oil-resistant rubber plug 9 is tightly combined with the outer wall of an instrument wire.
Example two
A sealing oil separation method for a signal wire 1 of a unit instrument is characterized in that a wire leading-out hole 2 is arranged on the outer wall 11 of the unit:
a protective tube is arranged between the lead leading-out hole 2 and the instrument field explosion-proof junction box 8;
making one section of the protection pipe be a vertical pipe 5;
extending a unit instrument signal wire 1 out of the wire leading-out hole 2, and connecting the wire to an instrument main control wire in an instrument field explosion-proof junction box 8 through a protection tube;
a sealing structure is arranged between the unit instrument signal conductor 1 and the vertical pipe 5;
the horizontal position of the lower end of the sealing structure is higher than the horizontal position of the central axis of the lead-out hole 2.
The sealing structure comprises a rubber plug 9 and a sealing glue layer 10;
a rubber plug 9 is arranged in the vertical pipe 5, a through hole is arranged at the center of the rubber plug 9, and a signal wire of the group instrument passes through the through hole;
the rubber plug 9 forms a tight fit structure between the inner wall of the vertical pipe 5 and the outer wall of the unit instrument signal conductor 1;
and pouring sealant above the rubber plug 9, and forming a sealant layer 10 after the sealant is solidified.
As shown in fig. 2, the method for sealing and isolating oil in the signal conductor 1 of the unit meter comprises the following steps: a hot galvanizing hexagonal outer wire 3, a hot galvanizing inner wire elbow 4, a hot galvanizing outer wire short wire and an instrument explosion-proof threading elbow 6 form a Z-shaped protection pipe structure, an instrument signal wire passes through a circular platform type oil-resistant rubber plug 9 arranged in a Z-shaped structure vertical pipe section (between the hot galvanizing inner wire elbow 4, the hot galvanizing outer wire short wire and the instrument explosion-proof threading elbow 6), and liquid oil-resistant sealant is poured above the circular platform type oil-resistant rubber plug. The oil-resistant sealant can be used for immersing and filling air and gaps between the truncated cone-shaped oil-resistant rubber plug 9 and the inner walls of the instrument signal wire and the hot-dip galvanized outer wire short wire in a liquid state, and a sealing layer with a certain thickness is formed after curing, so that the effect of complete sealing is achieved.
The oil-resistant sealant has a curing time of not less than 24 hours, the sealant cannot contact grease during curing, the thickness after curing is preferably 6-10 mm, the sealing effect cannot be achieved when the sealant is too thin, and the internal curing of the oil-resistant sealant is not ideal when the sealant is too thick.
The round platform type oil-resistant rubber plug 9 is soft in material, is in a liquid state before the oil-resistant sealant is cured, can be well adapted to the material and size change of signal wires of various instruments, and can meet the sealing requirement under various installation conditions.
The applicant utilizes the invention to reform 36 temperature probes and 12 displacement probes of a three-unit temperature probe of a catalytic cracking unit. The 'Z' -shaped instrument wire metal protection tube is newly added in 6 structural forms after field transformation, the instrument wire penetrates through the round table type oil-resistant rubber plug 9 according to the method, and then the liquid oil-resistant sealant is used for immersing and filling all parts of the sealing surface in a liquid state, so that the effect of complete sealing is achieved, and the long-period use effect is good.
The sealing oil separation method of the instrument signal conductor 1 of the unit has the following advantages:
(1) the original installation method and requirements of the unit instrument are not changed.
(2) The instrument signal wire lead-out interface originally designed by the unit is utilized, and the direction of the instrument wire outside the unit is not required to be changed.
(3) The novel Z-shaped protection tube structure comprising the vertical tube 5 is innovatively designed, and a machine shell leading-out opening which is easy to cause lubricating oil leakage is hermetically moved into the vertical tube 5 of the Z-shaped protection tube structure, so that conditions are created for thoroughly solving the lubricating oil leakage.
(4) Innovative liquid impregnation and filling of the sealant are utilized, the oil-resistant sealant 10 can automatically flow to fill all parts of a sealing surface in a liquid state and form a sealing layer with a certain thickness after solidification, so that a complete sealing effect is achieved
(5) The change of the upper diameter and the lower diameter of the round table type oil-resistant rubber plug 9 is fully utilized, so that the oil-resistant rubber plug 9 is tightly attached to the inner wall of the hot galvanizing outer wire short wire, and the primary sealing effect is good.
(6) The sealing effect is more reliable and effective by the primary sealing of the circular truncated cone type oil-resistant rubber plug 9 and the final sealing of the oil-resistant sealant and the double-layer sealing.
(7) The material of the round platform type oil-resistant rubber plug 9 is soft, convenient to disassemble and assemble and can be recycled.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims. Parts of the description that are not described in detail are known to the person skilled in the art.
Claims (10)
1. The utility model provides a sealed oil removal structure for unit instrument signal conductor which characterized in that: a wire leading-out hole (2) is formed in the outer wall (11) of the unit, a protection tube is arranged between the wire leading-out hole (2) and the instrument on-site explosion-proof junction box (8), the protection tube is provided with a section of vertical tube (5), and a unit instrument signal wire (1) extends out of the wire leading-out hole (2) and penetrates through the protection tube to be connected to an instrument main control wire in the instrument on-site explosion-proof junction box (8); a sealing structure is arranged between the unit instrument signal wire (1) and the vertical pipe (5), and the sealing structure comprises a rubber plug (9) and a sealing adhesive layer (10); the horizontal position of the central axis of the lead leading-out hole (2) is lower than the horizontal position of the lower end of the sealing structure.
2. The structure of claim 1, wherein the structure comprises: the protection tube is a Z-shaped tube.
3. The structure of claim 1, wherein the structure comprises: the protection tube comprises a hot galvanizing hexagonal outer wire (3), a hot galvanizing inner wire elbow (4), an upright vertical tube (5), an instrument explosion-proof threading elbow (6) and an instrument explosion-proof flexible connecting tube (7) which are sequentially arranged from the connection of the lead leading-out hole (2) to the connection of the instrument on-site explosion-proof junction box (8).
4. The structure of claim 1 or 2, wherein the structure comprises: the vertical tube (5) is a hot galvanizing external short wire.
5. The structure of claim 1, wherein the structure comprises: rubber buffer (9) are round platform type resistant oil rubber buffer (9), the through-hole that supplies unit instrument signal conductor (1) to pass is seted up at the center of rubber buffer (9), rubber buffer (9) are in the inner wall of vertical riser (5) with form the tight fit structure between the outer wall of unit instrument signal conductor (1).
6. The structure of claim 5, wherein the structure comprises: the maximum diameter of rubber buffer (9) is greater than the internal diameter of vertical standpipe (5), the diameter of through-hole is less than the maximum diameter of unit instrument signal conductor (1).
7. The structure of claim 1, wherein the structure comprises: and a pouring-molded sealing adhesive layer (10) is arranged above the rubber plug (9).
8. The structure of claim 1 or 7, wherein the structure comprises: the thickness of the sealant layer (10) is 6-10 mm.
9. The utility model provides a sealed oil removal method for unit instrument signal wire, is equipped with wire lead-out hole (2) at unit outer wall (11), its characterized in that:
a protection tube is arranged between the lead leading-out hole (2) and the instrument field explosion-proof junction box (8);
-making one of the protective tubes an upright riser (5);
extending a unit instrument signal wire (1) out of the wire leading-out hole (2), penetrating the protection tube and connecting the wire to an instrument main control wire in an instrument field explosion-proof junction box (8);
a sealing structure is arranged between the unit instrument signal conductor (1) and the vertical pipe (5);
the horizontal position of the lower end of the sealing structure is higher than the horizontal position of the central axis of the lead-out hole (2).
10. The method for sealing and isolating oil for the instrument signal wire of the unit according to claim 9, wherein the method comprises the following steps: the sealing structure comprises a rubber plug (9) and a sealing glue layer (10);
a rubber plug (9) is arranged in the vertical pipe (5), a through hole is formed in the center of the rubber plug (9), and the group instrument signal conductor penetrates through the through hole;
enabling the rubber plug (9) to form a tight fit structure between the inner wall of the vertical pipe (5) and the outer wall of the unit instrument signal wire (1);
pouring a sealant above the rubber plug (9), and curing the sealant to form a sealant layer (10), wherein the curing time is not less than 24 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911283826.2A CN111322406A (en) | 2019-12-13 | 2019-12-13 | Sealing oil separation structure and method for signal wire of unit instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911283826.2A CN111322406A (en) | 2019-12-13 | 2019-12-13 | Sealing oil separation structure and method for signal wire of unit instrument |
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| Publication Number | Publication Date |
|---|---|
| CN111322406A true CN111322406A (en) | 2020-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911283826.2A Pending CN111322406A (en) | 2019-12-13 | 2019-12-13 | Sealing oil separation structure and method for signal wire of unit instrument |
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| CN (1) | CN111322406A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113959473A (en) * | 2021-11-04 | 2022-01-21 | 中核武汉核电运行技术股份有限公司 | Equipment intervention type measuring sensor armored wire leading-out sealing device |
-
2019
- 2019-12-13 CN CN201911283826.2A patent/CN111322406A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113959473A (en) * | 2021-11-04 | 2022-01-21 | 中核武汉核电运行技术股份有限公司 | Equipment intervention type measuring sensor armored wire leading-out sealing device |
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