CN103017986A - Pressure test clamp for efficient heat exchange tube - Google Patents
Pressure test clamp for efficient heat exchange tube Download PDFInfo
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- CN103017986A CN103017986A CN2012104965739A CN201210496573A CN103017986A CN 103017986 A CN103017986 A CN 103017986A CN 2012104965739 A CN2012104965739 A CN 2012104965739A CN 201210496573 A CN201210496573 A CN 201210496573A CN 103017986 A CN103017986 A CN 103017986A
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- conical surface
- cutting ferrule
- cone
- inner conical
- joint body
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Abstract
The invention discloses a pressure test clamp for an efficient heat exchange tube. The pressure test clamp comprises a joint body (1) and a lock nut (2), wherein the joint body is connected with the lock nut by screw threads; the joint body is internally provided with a stepped hole (1a) that is through from left to right; a first inner conical surface (1b) is arranged at the right end of the stepped hole; a second inner conical surface (2c) is arranged between a round hole (2b) and a threaded hole (2a) of the lock nut; an O-shaped sealing ring (3), a conical sealing ferrule (4) and a conical locking ferrule (5) are mounted in sequence between the first inner conical surface and the second inner conical surface; the conical sealing ferrule is matched with the conical locking ferrule by a conical surface; and the conical locking ferrule is matched with the second inner conical surface of the lock nut by an outer conical surface. The pressure test clamp for the efficient heat exchange tube is simple in structure, convenient and quick to install, low in manufacturing cost, capable of performing the pressure test detection on a plurality of tubes simultaneously after serial connection, good in tightness, low in requirement on the end surface of the heat exchange tube, high in applicable pressure, low in labor intensity and efficient in work.
Description
Technical field
The invention belongs to heat exchanger tube manometric technique field, be specifically related to a kind of pressure testing jig of heat exchanger tube.
Background technology
Heat interchanger is one of requisite parts in the petroleum chemical industry production equipment, the quantity of heat exchanger tube hundreds of, thousands of at most at least in heat interchanger, in the manufacture process of heat interchanger, all heat exchanger tubes will pursue the root pressure testing, in order to avoid make finish after the mass defect of heat exchanger tube leakage itself, cause product to do over again and potential safety hazard.
Traditional heat exchanger tube pressure testing detects and adopts lifting jack briquetting method, its ultimate principle is with the fixing heat exchanger tube of hold-down bolt, promotes the briquetting compression heat exchanger tube mouth of pipe to reach the purpose of sealing orifice with lifting jack again, carries out bulge test again.This method Main Problems is: (1) once can only try 1～2 pipe, and fixing, the seal operation of heat exchanger tube comparatively bother length consuming time, inefficiency; (2) promote briquetting compression heat exchanger tube by lifting jack and seal, working strength is large; (3) end face of exchange heat pipe requires high; (4) applicable pressure is low.Along with the successively construction of extensive refinery device in recent years with put into operation, heat exchanger tube pressure testing testing amount also increases exponentially, traditional heat exchanger tube pressure-measuring method obviously can't satisfy the Refining Chemical Industry demand of high speed development.
Summary of the invention
The present invention aims to provide a kind of efficient heat-exchanging pipe pressure testing jig of simple in structure, quick and easy for installation, low cost of manufacture, can carry out simultaneously pressure testing to multitube after the series connection and detect, have the characteristics such as good airproof performance, low, the applicable pressure of heat exchanging end surfaces requirement is high, labour intensity is low, work efficiency is high.
For this reason, a kind of efficient heat-exchanging pipe pressure testing jig provided by the invention, comprise joint body and set nut, key is: the two ends, the left and right sides of described joint body are with external thread, the stepped hole that connects about in joint body, being provided with, left section diameter of described stepped hole be less than right section diameter, is provided with the first inner conical surface at the right-hand member of described stepped hole; Left part at described set nut has threaded hole, right part has circular hole, and threaded hole is communicated with circular hole, is provided with the second inner conical surface between described circular hole and threaded hole; The right-hand member of described threaded hole and joint body links together, O-ring seals, cone seal cutting ferrule and cone locking cutting ferrule are housed between described the first inner conical surface and the second inner conical surface successively, described cone seal cutting ferrule and cone locking cutting ferrule are by cone match, and the cone locking cutting ferrule cooperates with the second inner conical surface of set nut by male cone (strobilus masculinus).
Analyze discovery by exchange heat pipe pressure testing process, increase work efficiency, key problem is when solving simultaneously pressure testing of multitube, guarantees the operation easy construction.Jig provided by the present invention, its ultimate principle is jig to be linked to each other with test pump by high-pressure hose carry out pressure testing, during pressure testing, heat exchanger tube is inserted in the jig, screw set nut, the second inner conical surface of set nut compresses the cone locking cutting ferrule, makes its extruding heat exchanger tube outer wall, produce friction force with fixing heat exchanger tube with external pressure, outwards slide when preventing the heat exchanger tube pressurized; The cone locking cutting ferrule passes to the cone seal cutting ferrule with extruded pressure simultaneously, make its extruding O RunddichtringO, the first inner conical surface, the heat exchanger tube outer wall of O RunddichtringO and joint body are fitted tightly, choke the slit, prevent pressure through the connection of thread leakage of joint body and set nut, thereby reach the ferrule purpose.
Right section diameter of described stepped hole equates with the Circularhole diameter of set nut.Right section of stepped hole is used for installing heat exchanger tube, the termination of heat exchanger tube is against on the step surface of stepped hole, for guarantee that right section of stepped hole equates by the cross section with left section pressure measurement liquid of stepped hole behind the heat exchanger tube of packing into, left section diameter of stepped hole is designed to less than right section diameter, to guarantee the stationarity of pressure measurement liquid flow;
As preferably, the left side of described cone seal cutting ferrule is the plane.
The beneficial effect that the present invention has:
(1) specification of heat exchanger tube is determined by external diameter, there are the different wall such as 1mm, 1.5mm, 2mm, 2.5mm, 3mm in the heat exchanger tube of specification of the same race, and jig is enclosed within outside the heat exchanger tube, can carry out to all heat exchanger tubes of specification of the same race, different wall pressure testing, reduce the anchor clamps specification, saved manufacturing cost;
(2) jig is enclosed within outside the heat exchanger tube, and the end face of exchange heat pipe requires low, and quick and easy for installation, high efficiency;
(3) realizing locking, passing through extruding O RunddichtringO by cone locking cutting ferrule extruding heat exchanger tube realizes sealing, passes through the pressure transmission between cone seal cutting ferrule realization cone locking cutting ferrule and the O RunddichtringO, simple in structure and good seal performance;
(4) can carry out simultaneously pressure testing to multitube after the series connection and detect, be applicable to a large amount of heat exchanger tubes in the heat exchanger by root high pressure pressure testing inspection, easy to operate, applicable pressure surpasses 25Mpa.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is that the present invention is used for simultaneously many heat exchanger tubes being carried out the scheme of installation that pressure testing detects.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the present invention is described in further detail:
Efficient heat-exchanging pipe pressure testing jig as shown in Figure 1 is comprised of joint body 1, set nut 2, O-ring seals 3, cone seal cutting ferrule 4 and cone locking cutting ferrule 5, five coaxial settings.
The two ends, the left and right sides of joint body 1 are with external thread, and the external thread of left end is used for connecting high-pressure water pipe, and the external thread of right-hand member is used for connecting set nut 2.The stepped hole 1a that connects about being provided with in joint body 1, the left section diameter of stepped hole 1a be less than right section diameter, is provided with the first inner conical surface 1b at the right-hand member of stepped hole 1a.Left part at set nut 2 has threaded hole 2a, is used for linking to each other with joint body 1, and the right-hand member of threaded hole 2a and joint body 1 links together, and the right part of set nut 2 has circular hole 2b, is used for dress heat exchanger tube 6.Threaded hole 2a is communicated with circular hole 2b.Communicate about whole jig, pressure testing liquid passes through from jig.Between circular hole 2b and threaded hole 2a, be provided with the second inner conical surface 2c, between the first inner conical surface 1b and the second inner conical surface 2c, O-ring seals 3, cone seal cutting ferrule 4 and cone locking cutting ferrule 5 be housed successively.Cone seal cutting ferrule 4 passes through cone match with cone locking cutting ferrule 5, and cone locking cutting ferrule 5 cooperates with the second inner conical surface 2a of set nut 2 by male cone (strobilus masculinus).For guaranteeing reliable locking and sealing, the internal diameter of O-ring seals 3, cone seal cutting ferrule 4 and cone locking cutting ferrule 5 is less than the right section diameter of stepped hole 1a.
Preferably, the circular hole 2b equal diameters of right section diameter of stepped hole 1a and set nut 2.The left side of cone seal cutting ferrule 4 is the plane, and cone seal cutting ferrule 4 contacts with O-ring seals 3 lines.
As described in Figure 2, when jig is used for simultaneously many heat exchanger tubes being carried out the pressure testing detection, the two ends of every heat exchanger tube 6 all are connected with jig, link to each other by high-pressure hose 7 between the adjacent jig, connect with high-pressure hose 7, can save the floor area that test detects, the jig that is positioned at head end connects test pump 8 by high-pressure hose, between test pump 8 and head end jig, be provided with water intaking valve 9, be positioned at terminal jig run in gas blowdown valve 10 and pressure gauge valve 11.Be convenient to arrange.
When being used for single heat exchange tube pressure testing detection, before the pressure testing, the set nut of jig is installed but is not screwed.During pressure testing, first jig is connected with test pump by high-pressure hose, then heat exchanger tube is inserted in the jig and (be inserted into till the step surface of joint body always), screw set nut and just can carry out pressure testing.When carrying out simultaneously pressure testing of multitube detection, only need with corresponding jig and high-pressure hose many heat exchanger tubes are contacted, open water intaking valve and exhaust pressure relief valve, make to be full of side by side net air of water in the heat exchanger tube; Close water intaking valve and exhaust pressure relief valve, open the pressure testing pump valve, then start test pump, pressure in accordance with regulations and dwell time pressure test leak-detecting.Leak detection sheds overpressure after finishing, and unscrews the jig set nut, takes out heat exchanger tube, namely finishes the pressure test leak-detecting overall process of one group of pipe.
When pressure was raised to 25MPa, heat exchanger tube and jig were without the relative sliding sign, and seal point, all reaches the expection pressure testing and detects effect through repeatedly test also without leakage phenomenon.By making different tube diameters heat exchanger tube pressure testing jig, can realize that various heat exchanger heat-exchanging tubes are carried out pressure testing simultaneously to be detected.
Claims (3)
1. efficient heat-exchanging pipe pressure testing jig, comprise joint body (1) and set nut (2), it is characterized in that: the two ends, the left and right sides of described joint body (1) are with external thread, the stepped hole (1a) that connects about in joint body (1), being provided with, left section diameter of described stepped hole (1a) be less than right section diameter, is provided with the first inner conical surface (1b) at the right-hand member of described stepped hole (1a); Left part at described set nut (2) has threaded hole (2a), right part has circular hole (2b), and threaded hole (2a) is communicated with circular hole (2b), is provided with the second inner conical surface (2c) between described circular hole (2b) and threaded hole (2a); Described threaded hole (2a) links together with the right-hand member of joint body (1), O-ring seals (3), cone seal cutting ferrule (4) and cone locking cutting ferrule (5) are housed between described the first inner conical surface (1b) and the second inner conical surface (2c) successively, described cone seal cutting ferrule (4) passes through cone match with cone locking cutting ferrule (5), and cone locking cutting ferrule (5) cooperates with second inner conical surface (2a) of set nut (2) by male cone (strobilus masculinus).
2. according to efficient heat-exchanging pipe pressure testing jig claimed in claim 1, it is characterized in that: right section diameter of described stepped hole (1a) and circular hole (2b) equal diameters of set nut (2), the internal diameter of described O-ring seals (3), cone seal cutting ferrule (4) and cone locking cutting ferrule (5) is less than right section diameter of stepped hole (1a).
3. according to claim 1 or 2 described efficient heat-exchanging pipe pressure testing jigs, it is characterized in that: the left side of described cone seal cutting ferrule (4) is the plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104965739A CN103017986A (en) | 2012-11-29 | 2012-11-29 | Pressure test clamp for efficient heat exchange tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104965739A CN103017986A (en) | 2012-11-29 | 2012-11-29 | Pressure test clamp for efficient heat exchange tube |
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| Publication Number | Publication Date |
|---|---|
| CN103017986A true CN103017986A (en) | 2013-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104965739A Pending CN103017986A (en) | 2012-11-29 | 2012-11-29 | Pressure test clamp for efficient heat exchange tube |
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| CN (1) | CN103017986A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103913371A (en) * | 2014-03-07 | 2014-07-09 | 宁夏宝塔石化科技实业发展有限公司 | U-shaped pipe pressure test fixture used in alkylation reactor |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08285749A (en) * | 1995-04-12 | 1996-11-01 | Sekisui Chem Co Ltd | External hydraulic test equipment for flexible synthetic resin tube |
| JP2002039905A (en) * | 2000-07-24 | 2002-02-06 | Pentafu Kk | Apparatus and method for testing leakage resistance of piping |
| JP2006084474A (en) * | 2005-09-26 | 2006-03-30 | Kurimoto Ltd | Hydraulic pressure tester |
| JP2008045943A (en) * | 2006-08-11 | 2008-02-28 | Sekisui Chem Co Ltd | Pressure testing device |
| CN202453151U (en) * | 2012-02-07 | 2012-09-26 | 哈尔滨锅炉厂有限责任公司 | Novel test device of sealing performance of tube plate and heat exchange tube |
| CN102788668A (en) * | 2012-07-30 | 2012-11-21 | 山海关船舶重工有限责任公司 | Single-tube pressure test device for heat exchanger of ship |
| CN203011654U (en) * | 2012-11-29 | 2013-06-19 | 重庆气体压缩机厂有限责任公司 | Clamp used for pressure test of heat exchange tube |
-
2012
- 2012-11-29 CN CN2012104965739A patent/CN103017986A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08285749A (en) * | 1995-04-12 | 1996-11-01 | Sekisui Chem Co Ltd | External hydraulic test equipment for flexible synthetic resin tube |
| JP2002039905A (en) * | 2000-07-24 | 2002-02-06 | Pentafu Kk | Apparatus and method for testing leakage resistance of piping |
| JP2006084474A (en) * | 2005-09-26 | 2006-03-30 | Kurimoto Ltd | Hydraulic pressure tester |
| JP2008045943A (en) * | 2006-08-11 | 2008-02-28 | Sekisui Chem Co Ltd | Pressure testing device |
| CN202453151U (en) * | 2012-02-07 | 2012-09-26 | 哈尔滨锅炉厂有限责任公司 | Novel test device of sealing performance of tube plate and heat exchange tube |
| CN102788668A (en) * | 2012-07-30 | 2012-11-21 | 山海关船舶重工有限责任公司 | Single-tube pressure test device for heat exchanger of ship |
| CN203011654U (en) * | 2012-11-29 | 2013-06-19 | 重庆气体压缩机厂有限责任公司 | Clamp used for pressure test of heat exchange tube |
Non-Patent Citations (1)
| Title |
|---|
| 贺萌等: "换热器新型换热管试压装置的设计与应用", 《中国化工装备》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103913371A (en) * | 2014-03-07 | 2014-07-09 | 宁夏宝塔石化科技实业发展有限公司 | U-shaped pipe pressure test fixture used in alkylation reactor |
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Application publication date: 20130403 |