CN104449563A - Sealant for blocking leakage under pressure - Google Patents
Sealant for blocking leakage under pressure Download PDFInfo
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- CN104449563A CN104449563A CN201410589429.9A CN201410589429A CN104449563A CN 104449563 A CN104449563 A CN 104449563A CN 201410589429 A CN201410589429 A CN 201410589429A CN 104449563 A CN104449563 A CN 104449563A
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Abstract
The invention discloses a sealant for blocking leakage under pressure. The sealant is prepared from the following components in percentage by weight: 10-30% of a base material, 10-20% of a curing agent, 10-15% of a retarder, 10-20% of a filler, 10-15% of a tackifier and 5-15% of a plasticizer, wherein the base material is a phosphate compound; the curing agent is one or more of zinc oxide, aluminum oxide, copper oxide and magnesium oxide; the retarder is one or more of organic polymers which resist high temperatures over 250 DEG C. Compared with organic sealants for blocking leakage, the sealant for blocking leakage under pressure disclosed by the invention is wide in source of raw materials, simple in processing craft, low in cost and free of pollution as high-temperature-resistant phosphate and silicate are used as the base material of the sealant.
Description
Technical field
The present invention relates to Live leaking-stopping technology field, particularly a kind of pressure sealing glue injection jig and sealing agent.
Background technology
In refinery, chemical plant, pipeline is numerous; because the medium of its conveying constantly flows; wash away at burn into, under the impact of the factor such as vibration, on straight tube conveying pipeline section, on reducing pipeline section, fluid medium change nyctitropic elbow and threeway place, pipeline weld seam on often there will be leakage.And if leakage can not get effective control, environmental pollution will be caused, affects Business Economic Benefit and even security incident occurs.Therefore the major issue that leakage has just become modern oil refining, chemical enterprise research how fast and effeciently, is stopped when not reducing pressure medium and temperature in pipe.
In the ordinary course of things, pipeline is once leak, and be difficult to carry out repair welding in a dynamic state, reason has two: one, and the metal of melting is not before obtaining solidifying, and the medium that just may be ejected blows away; Its two, leaking medium itself likely threatens the personnel safety of welding personnel, especially inflammable and explosive leaking medium, carries out repair welding with regard to being more difficult under dynamic situation.Therefore, in quite long period, seam leakage blinding technology with pressure is considered as forbidden zone by people always.
Traditional emergency repair method of pipe leakage generally also has following several except replace tubes: repair welding method, steel band method, gluing connection, fixture injecting glue method.Wherein, repair welding method utilizes welding heat energy to make molten metal the crackle on pipeline is linked to be integral solder joint or in the leakage defect of metal, be welded with a closure plate, makes it to reach a kind of special technique means (also known as crator method or patch installing) reused.The shortcoming of the method is, to inflammable and explosive medium transport pipeline welding with great danger; Construction is complicated, needs step-down, stops the supple of gas or steam, issues notice of stopping the supple of gas or steam in advance, handles " examination and approval procedures of getting angry ".
Steel band method uses external force steel strip winding leak position on pipeline, utilizes the rubber pad between steel band and leakage point to carry out leak stopping.The method is applicable to the interim leak stopping of mesolow pipe leakage.The method simple and fast, but can only as the interim leak stopping process of one.Rubber sheet gasket is easily aging, and steel band is subject to the impact of the factor such as outer force-disturbance, and the probability that leak stopping was lost efficacy is comparatively large, from instead of one well leak terms of settlement.
Such as application number is 200810007258.9, and denomination of invention is the patent of the method for permanent pressure leak stopping, relates to a kind of fixture or steel band and fibre reinforced composites of utilizing and carries out the method for permanent pressure leak stopping to pipeline.The method utilizes fixture or steel band to carry out interim leak stopping process to pipeline, then use and fill and lead up material, fixture or the irregular area such as steel band, steel band card are filled and led up transition, and recycling continuous fiber composite material is wound around the region comprising fixture or steel band, completes permanent leak stopping and strengthens.
Mull technique relies on external force that tackiness agent is directly clogged equipment leakage position, stops the blocking method of leakage by force.The method leak stopping success ratio is not high, cannot directly process for high-pressure leakage.
The sealed cavity that fixture injecting glue method utilizes the appearance of leakage position and fixture to form, injects and is full of sealed cavity, stops leaking of medium, thus stops a leak.The advantages such as it has without the need to getting angry, high temperature resistant, high pressure, thus be widely used.This kind of blocking method, simple and efficient, easy grasp, be not only applicable to straight pipeline, and be applicable to the positions such as weld bond, threeway, elbow, reducing, valve interface, ring flange, ring flange root, container tank connecting tube root, ensure the normal operation of pipeline, and permanent leak stopping can be played and the effect strengthened.Pressure sealing sealing agent conventional at present mainly contains two kinds, and one is organic leakage blocking sealants, based on the macromolecular material such as synthetic rubber and synthetic resins, adds appropriate filler and auxiliary agent, becomes through mechanically mixing face.Though can be used for the blocking up under pressure of steam, water, wet goods medium, by the impact of macromolecular material Degradation Characteristics, its use temperature is no more than 400 DEG C.Another kind is the ceramic adhesive after solidification, and they can resistance to more than 1200 DEG C high temperature, and be applicable to cermet material sealing, bonding, leak stopping, this ceramic adhesive needs now with the current, is not suitable for pressure sealing.
Such as application number is 201010181109.1, and denomination of invention is a kind of sealant for high temperature pressurized leakage stop-up, relates to a kind of sealant for high temperature pressurized leakage stop-up, belongs to macromolecule chemical industry technical field.It is characterized in that with paracril and liquid acrylonitrile butadiene rubber for main body sizing material, add resol and be equipped with reinforcement, weighting agent, anti-aging agent, vulcanizing agent, promotor, tenderizer and other additive, making after opening refining mixing can to the high temperature leakage blocking sealants implementing pressure sealing under the different media states such as high-temperature steam, high temperature, hydrocarbon and stack gas.Sealing agent Applicable media is extensive, ability erosion medium resistance, and keeps stable for a long time.Sealing agent has excellent oil-proofness, thermotolerance, the excellent adhesion of package stability and polar material.
Summary of the invention
The technical problem to be solved in the present invention is for above-mentioned the deficiencies in the prior art, and provides the inorganic type pressure sealing sealing agent of a kind of 200-900 DEG C high temperature.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of pressure sealing sealing agent, by weight percentage, its composition comprises:
Body material 10-30%,
Solidifying agent 10-20%,
Retardant 10-15%,
Filler 10-20%,
Tackifier 10-15%,
Softening agent 5-15%,
Wherein, body material is phosphate compounds; Solidifying agent be zinc oxide, aluminum oxide, cupric oxide, magnesian one or more; Retardant is one or more of the organic polymer of resistance to more than 250 DEG C high temperature.
Softening agent of the present invention is dioctyl phthalate (DOP) or butyl ester.
A kind of pressure sealing sealing agent, by weight percentage, its composition comprises:
Body material 12-35%,
Solidifying agent 12-18%,
Retardant 10-15%,
Filler 10-20%,
Tackifier 12-15%,
Softening agent 5-10%,
Wherein, body material is phosphate compounds; Solidifying agent be zinc oxide, aluminum oxide, cupric oxide, magnesian one or more; Retardant is one or more of the organic polymer of resistance to more than 250 DEG C high temperature.
Solidifying agent of the present invention is cupric oxide.
Retardant of the present invention is polyphenylene sulfide.
Tackifier of the present invention are fluid rubber.
After the present invention adopts technique scheme, there is following technique effect:
High temp. pressuriced leakage blocking sealing agent of the present invention makes sealing agent body material owing to selecting resistant to elevated temperatures phosphoric acid salt and silicate, and compared with organic type leakage blocking sealants, raw material sources are wide, complete processing is simple, and cost is low, pollution-free.
Adopt the emergency situation for the treatment of of Power operational outfit of the present invention burst dielectric leakage; can with pressurely carry out; do not affecting under the prerequisite that power plant normally produces; shutoff, reparation are carried out to band temperature, leakage equipment with pressure; the problems such as the run, drip, leak of pipeline can be eliminated rapidly, avoid unit load down that conventional examination and repair method may cause, shutdown and the tremendous economic loss that brings.
High temp. pressuriced leakage blocking sealing agent of the present invention, pressure sealing implemented by the pipeline of 200-900 DEG C, has the features such as curing speed is fast, intensity is high, good airproof performance.Can be used for the blocking up under pressure of the high-temperature mediums such as the superheated vapour of the industries such as petrochemical complex, refining of petroleum, thermal power generation, Metal smelting, high temperature, hydrocarbon, stack gas.
Compared with traditional leak stopping mode, the present invention is adopted to have the following advantages:
1, simple to operate, with low content of technology, do not need special training, ordi-nary maintenance workman can operate.
2, maintenance cost is low, expense is few, eliminates the time of system shutdown.
Accompanying drawing explanation
Fig. 1 shows the structural representation of pressure sealing glue injection jig of the present invention;
Fig. 2 shows A-A sectional view in Fig. 1;
Wherein have: 1, holding bolt; 2, fitting nut; 3, auxiliary connection board; 4, chain is fastenedly connected; 5, slips is welded; 6, link up with; 7, guide wire; 8, pressure pump; 9, leak point; 10, medium pipeline; 11, elastic seal ring; 13, injecting glue tank.
Embodiment
For making object of the present invention and technical scheme clearly, below in conjunction with the embodiment of the present invention, technical scheme of the present invention is clearly and completely described.Obviously, described embodiment is a part of embodiment of the present invention, instead of whole embodiments.Based on described embodiments of the invention, the every other embodiment that those of ordinary skill in the art obtain under without the need to the prerequisite of creative work, all belongs to the scope of protection of the invention.
The invention discloses a kind of pressure sealing sealing agent, by weight percentage, its composition comprises:
Body material 10-30%,
Solidifying agent 10-20%,
Retardant 10-15%,
Filler 10-20%,
Tackifier 10-15%,
Softening agent 5-15%,
Wherein, body material is phosphate compounds; Solidifying agent be zinc oxide, aluminum oxide, cupric oxide, magnesian one or more; Retardant is one or more of the organic polymer of resistance to more than 250 DEG C high temperature.
In preferred embodiment, described a kind of pressure sealing sealing agent, by weight percentage, its composition comprises:
Body material 12-35%,
Solidifying agent 12-18%,
Retardant 10-15%,
Filler 10-20%,
Tackifier 12-15%,
Softening agent 5-10%,
Wherein, body material is phosphate compounds; Solidifying agent be zinc oxide, aluminum oxide, cupric oxide, magnesian one or more; Retardant is one or more of the organic polymer of resistance to more than 250 DEG C high temperature.
In the preferred embodiment of the present invention, described solidifying agent is cupric oxide.
In the preferred embodiment of the present invention, described retardant is polyphenylene sulfide.
In the preferred embodiment of the present invention, described tackifier are fluid rubber.
In the preferred embodiment of the present invention, described softening agent is dioctyl phthalate (DOP) or butyl ester.
Add after above-mentioned sealing agent is prepared in the injecting glue tank 13 of pressure sealing glue injection jig as shown in Figure 1, by pressure pump 8, sealing agent is pumped in guide wire 7 during use, then carry out leak stopping operation.
As shown in Figure 1, pressure sealing glue injection jig, comprise guide wire 7, the airtight connection pressure pump 8 in guide wire 7 one end, guide wire 7 the other end airtight connection welding slips 5, welding slips 5 is corresponding with medium pipeline, and welding slips 5 is arc, welding slips 5 has through hole, and guide wire 7 communicates with this through hole.
As shown in Figure 2, the flexible sealing groove of welding slips 5 side opening around the above this through hole, is provided with elastic seal ring 11 in resilient seal groove, and elastic seal ring 11 and guide wire 7 lay respectively at the inside and outside two sides of welding slips 5.
Preferably, described welding slips 5 outer side is fixedly connected with hook 6 below, this pressure sealing glue injection jig also comprises auxiliary connection board 3, auxiliary connection board 3 side connects fitting nut 2, fitting nut 2 is connected with holding bolt 1, and auxiliary connection board 3 also has through hole, and this through hole communicates with fitting nut 2, upper being fixedly connected with below of auxiliary connection board 3 is fastenedly connected chain 4, and the free end being fastenedly connected chain 4 is corresponding with hook 6.
Auxiliary connection board 3, fitting nut 2, holding bolt 1 and be fastenedly connected chain 4 and jointly constitute a securing gear in the present invention.
When using this pressure sealing glue injection jig to carry out shutoff to the leakage point of medium pipeline, first with polishing machine, is polished in leakage point place, so that it is sturdy with medium pipeline to weld slips 5 when welding, then elastic seal ring 11 is positioned in resilient seal groove, welding slips 5 is buckled on medium pipeline, make the mouth of pipe of guide wire 7 aim at leakage point 9, by the effect of pressure pump 8, the sealing agent in injecting glue tank 13 is entered in sealing groove and elastic seal ring 11 surrounding gap by guide wire 7 drainage.And then securing gear is fixed on medium pipeline opposite side, screw holding bolt 1.Now will weld slips 5 seal welding outside medium pipeline with electric welding, complete pressure sealing.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, and all terms used herein (comprising technical term and scientific terminology) have the meaning identical with the general understanding of the those of ordinary skill in field belonging to the present invention.Should also be understood that those terms defined in such as general dictionary should be understood to have the meaning consistent with the meaning in the context of prior art, unless and define as here, can not explain by idealized or too formal implication.
The implication of the "and/or" described in the present invention refers to respective Individual existence or both simultaneous situations include interior.
The implication of " inside and outside " described in the present invention refers to relative to equipment itself, in the direction of sensing equipment inside is, otherwise is outward.
When the implication of " left and right " described in the present invention refers to reader just to accompanying drawing, the left side of reader is a left side, and the right of reader is the right side.
The indirect connection that can be the direct connection between parts also can be by other parts between parts of the implication of " connection " described in the present invention.
With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on specification sheets, must determine its technical scope according to right.
Claims (6)
1. a pressure sealing sealing agent, is characterized in that: by weight percentage, and its composition comprises:
Body material 10-30%,
Solidifying agent 10-20%,
Retardant 10-15%,
Filler 10-20%,
Tackifier 10-15%,
Softening agent 5-15%,
Wherein, body material is phosphate compounds; Solidifying agent be zinc oxide, aluminum oxide, cupric oxide, magnesian one or more; Retardant is one or more of the organic polymer of resistance to more than 250 DEG C high temperature.
2. a kind of pressure sealing sealing agent according to claim 1, is characterized in that: described softening agent is dioctyl phthalate (DOP) or butyl ester.
3. a kind of pressure sealing sealing agent according to claim 1, is characterized in that: by weight percentage, and its composition comprises:
Body material 12-35%,
Solidifying agent 12-18%,
Retardant 10-15%,
Filler 10-20%,
Tackifier 12-15%,
Softening agent 5-10%,
Wherein, body material is phosphate compounds; Solidifying agent be zinc oxide, aluminum oxide, cupric oxide, magnesian one or more; Retardant is one or more of the organic polymer of resistance to more than 250 DEG C high temperature.
4. a kind of pressure sealing sealing agent according to claim 1, is characterized in that: described solidifying agent is cupric oxide.
5. a kind of pressure sealing sealing agent according to claim 1, is characterized in that: described retardant is polyphenylene sulfide.
6. a kind of pressure sealing sealing agent according to claim 1, is characterized in that: described tackifier are fluid rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410589429.9A CN104449563A (en) | 2014-10-29 | 2014-10-29 | Sealant for blocking leakage under pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410589429.9A CN104449563A (en) | 2014-10-29 | 2014-10-29 | Sealant for blocking leakage under pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104449563A true CN104449563A (en) | 2015-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410589429.9A Pending CN104449563A (en) | 2014-10-29 | 2014-10-29 | Sealant for blocking leakage under pressure |
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| CN (1) | CN104449563A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1427060A (en) * | 2001-12-17 | 2003-07-02 | 中国石油天然气集团公司 | Sealing agent used for high temp. pressuriced leakage blocking and its use method |
| CN101880413A (en) * | 2010-05-24 | 2010-11-10 | 大连理工大学 | Sealant for high temperature pressurized leakage stop-up |
| CN104031608A (en) * | 2014-06-06 | 2014-09-10 | 无锡市崇安区科技创业服务中心 | Sealing agent for high-temperature pressure plugging and preparation method thereof |
-
2014
- 2014-10-29 CN CN201410589429.9A patent/CN104449563A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1427060A (en) * | 2001-12-17 | 2003-07-02 | 中国石油天然气集团公司 | Sealing agent used for high temp. pressuriced leakage blocking and its use method |
| CN101880413A (en) * | 2010-05-24 | 2010-11-10 | 大连理工大学 | Sealant for high temperature pressurized leakage stop-up |
| CN104031608A (en) * | 2014-06-06 | 2014-09-10 | 无锡市崇安区科技创业服务中心 | Sealing agent for high-temperature pressure plugging and preparation method thereof |
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Application publication date: 20150325 |