CN103604012A - Connecting nut dedicated to split-type air conditioner refrigerant connecting pipeline - Google Patents
Connecting nut dedicated to split-type air conditioner refrigerant connecting pipeline Download PDFInfo
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- CN103604012A CN103604012A CN201310126968.4A CN201310126968A CN103604012A CN 103604012 A CN103604012 A CN 103604012A CN 201310126968 A CN201310126968 A CN 201310126968A CN 103604012 A CN103604012 A CN 103604012A
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- nut
- tapered sleeve
- hole
- connecting tube
- internal taper
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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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/025—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges
- F16L19/028—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges the collars or flanges being obtained by deformation of the pipe wall
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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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/0212—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
Abstract
A connecting nut dedicated to a split-type air conditioner refrigerant connecting pipeline is characterized in that a nut inner taper hole is formed between a threaded inner hole and a smooth wall inner hole of the connecting nut, a taper sleeve used in mating is arranged in the nut inner taper hole, a taper sleeve inner taper hole is formed in the bottom of the taper sleeve hole; an outer frustum on a joint extrudes a trumpet hole during connection; the trumpet hole extrudes the taper sleeve inner taper hole and extrudes a taper sleeve taper between the nut inner taper hole and a connecting pipe to realize sealing of the connecting pipe; the trumpet hole is extruded between the outer frustum of the joint and the taper sleeve inner taper hole to realize sealing of the trumpet hole. The connecting nut dedicated to the split-type air conditioner refrigerant connecting pipeline has the characteristics of being used for highly sealing all the refrigerant systems and connecting the connecting pipelines made of all the materials, and achieving complete interchangeability with the connecting nuts in the prior art.
Description
Technical field
The invention belongs to air-conditioning technical field, only relate to a kind of attaching nut of air-conditioning refrigerant connecting pipeline, particularly only relate to a kind of attaching nut who is exclusively used in split-type air conditioner indoor set and outdoor unit refrigeration agent connecting pipeline.
Background technique
Known split-type air conditioner is that the joint connecting on indoor set and outdoor unit by two refrigeration agent connecting tubes connects into a circulation loop by refrigerant line at present.Joint in this specification be indoor set refrigeration agent input/output port for be connected with connecting tube with externally threaded pipe joint with outdoor unit for the male connection on the stop valve being connected with connecting tube.In prior art, for connecting these two refrigeration agent connecting tubes of indoor and outdoor machine, be generally copper pipe, also there is in recent years employing copper-aluminium welding pipe, copper aluminum composite pipes, aluminum pipe, steel pipe is as the connecting pipeline of indoor and outdoor machine, but what no matter adopt is any metal tube, it is bell mouth expanding with the most frequently used connecting means of indoor set and outdoor unit and is connected.It is that tube opening is packed into attaching nut that bell mouth expanding connects, then tube opening is expanded into horn mouth, by the internal thread on attaching nut, be connected with the outside thread spiral on indoor and outdoor machine joint, by the nut circular cone of attaching nut bottom, horn mouth be squeezed in and on the outer frustum of joint, form horn mouth and be tightly connected.Having internal thread is the substantive technical characteristics of nut.Bell mouth expanding Placement is to bell mouth expanding, connecting tube material, and the connection requests such as grasp that apply moment size when attaching nut connects are higher, slightly improper, will cause and be tightly connected unsuccessfully.Bell mouth expanding Placement has determined that horn mouth can not open too much, horn mouth tube wall is thinner, therefore, the ability of the crush seal that horn mouth bears a little less than, prior art also has on horn mouth positive and negative to be increased and protects core, with the design of protecting and improving bell-mouthed bearing capacity, but bell mouth expanding Placement has determined horn mouth and can not open too much, bell-mouthed crush seal face is less, horn mouth tube wall is thinner, therefore, horn mouth bearing capacity is limited, also just can not bear compared with high sealing pressure requirement, even if desirable installation connects, can not meet the more sealing requirements of high pressure system, generally, connect improper or just with the time, grown easy generation leakage, in fact, split-type air conditioner often all can leak a certain amount of refrigeration agent every year, need regular replenishment, otherwise refrigerating capacity can constantly decline, this kind of structural feature of connecting means causes just.The Application and Development of new refrigerant system in recent years particularly, as R410a, R32, R290 refrigerant system etc., higher to sealing requirements, as R410a, in the technical regulation of R32 refrigerant system, just bell-mouthed technique is made, withstand voltage properties has been made requirements at the higher level, and R290 refrigerant system has clearly stipulated that detachable bell mouth expanding Placement can not be used.Therefore, original bell mouth expanding Placement can not meet R410a, R32, and the high sealing of the refrigerant system that R290 etc. are new has required.The connecting tube that bell mouth expanding connects need to be through nut sleeve in nut trepanning, no matter horn mouth is adopted the core that protects of which kind of form, sheath, bell-mouthed preparation process is done to which kind of improvement, after connecting, between pipe itself and nut trepanning, there is nut sleeve interporal lacuna, thereby bell mouth expanding connect in connecting tube the weakest withstand voltage position horn mouth tear curved mouth open and in fact directly communicate with the external world, horn mouth is torn curved mouth open constantly among ambient atmosphere, be subject to vitiated air in atmosphere, the erosion of various sewage, during air-conditioning work, condensed water agglutinates in connecting tube joint, condensed water will be penetrated into horn mouth by gap and tear curved mouth open, cause corrosion, year in and year out, while having eroded to a certain degree, horn mouth is torn curved mouth open can produce leakage because of corrosion failure, it is special when to be dissimilar metal for joint material with connecting tube material be connected, many again a kind of electrochemical corrosion destroy, corrosion failure is particularly evident, as in copper sleeve is connected with the bell mouth expanding of aluminium connecting tubes, copper sleeve contacts with the direct crimping of aluminium connecting tubes horn mouth, after connecting, electrochemical corrosion between copper aluminium just exists all the time, the horn mouth of weak part is torn curved mouth open the most easily because of the very fast rupture and leakage of electrochemical corrosion, therefore, the Placement of bell mouth expanding is to be not directly applied to being connected of copper sleeve and aluminium connecting tubes, why Here it is there will be a kind of copper-aluminium welding pipe in recent years, be that part broad in the middle is aluminum pipe, but a bit of copper pipe is welded at the two of having to, retain copper pipe and pack into nut, bell mouth expanding, the reason being connected with copper sleeve.In addition the state in certain vibration always during pipe connection work, pipe itself also can produce because of the interference of external environment and rock loosening possibility, due to gapped between pipe itself after connecting and nut trepanning, conventionally the trepanning hole that is socketed connecting tube in nut is long only for about 3mm, and the circular cone of nut bottom is ined succession mutually with trepanning, therefore this gap is short and tear curved mouth open with connecting tube horn mouth and be connected, any vibration that causes connecting tube, rock and all can be delivered to horn mouth almost undampedly and tear open in curved mouth, these factors have been aggravated horn mouth and have been torn breaking of curved mouth open and produce leakage, time has been grown and also can cause that nut is slightly loosening, when there is slight becoming flexible in nut, horn mouth also can be because of extruding force reduce to produce leakage.Therefore, finding a kind of connection sealing can be higher, horn mouth is torn curved mouth open and is avoided extraneous corrosion and the anti-loosening superior performance of vibrationproof anti-shake, can directly all different kinds of metal tubes such as copper sleeve and aluminum pipe be coupled together and can not produce the attaching nut of electrochemical corrosion, just become people to thirst for the technical barrier of solution always.
Summary of the invention
The problem that the Placement that object of the present invention connects for above-mentioned refrigerant system pipeline bell mouth expanding just exists, on the basis connecting at bell mouth expanding, do not changing under the prerequisite of existing joint structure, and the attaching nut of a kind of indoor apparatus of air conditioner providing specially and outdoor unit refrigeration agent connecting pipeline, thoroughly solved the problem that above-mentioned bell mouth expanding connecting means exists: sealing is lower, horn mouth is torn curved mouth open because communicating and produce corrosion with the external world, the anti-loosening poor-performing of vibrationproof and the problem that can not be directly used in copper sleeve and be connected with aluminum pipe.
The object of the invention is to realize in the following manner: a kind of attaching nut who is exclusively used in split-type air conditioner refrigeration agent connecting pipeline, comprise the joint on indoor set and outdoor unit, the horn mouth of the outer frustum of joint and connecting tube end, it is characterized in that: attaching nut one has the nut of inner via hole, nut inner via hole is divided into threaded interior hole and light wall endoporus, between threaded interior hole and light wall endoporus, it is nut internal taper hole, in nut internal taper hole, be provided with matching used tapered sleeve, tapered sleeve is the tapered sleeve trepanning of hollow, tapered sleeve trepanning bottom is provided with tapered sleeve internal taper hole, tapered sleeve trepanning hole wall and tapered sleeve outer cone inclined-plane form tapered sleeve cone oblique angle, the horn mouth of the outer frustum extruded joint pipe of joint end, by the horn mouth extruding tapered sleeve internal taper hole of connecting tube end and tapered sleeve is bored to oblique angle be squeezed in the connecting tube of realizing tapered sleeve trepanning and connecting tube between nut internal taper hole and connecting tube and seal, the horn mouth of connecting tube end is squeezed between the outer frustum of joint and tapered sleeve internal taper hole and realizes horn mouth sealing, tapered sleeve cone oblique angle crush seal movement direction and nut precession direction are in the other direction.
The present invention can also realize by such mode:
1, nut internal taper hole cone oblique angle is less than 12 degree.
2, tapered sleeve cone oblique angle is equal to or less than nut internal taper hole cone oblique angle.
3, taper sleeve hole height and nut internal taper hole height are all greater than 4mm, and tapered sleeve trepanning is tall and big in 2mm.
4, at the bottom of nut internal taper hole, footpath equals to be greater than footpath at the bottom of taper sleeve hole, and at the bottom of nut internal taper hole, footpath equals to be greater than footpath at the bottom of the outer frustum of joint.
Tapered sleeve trepanning hole wall of the present invention and tapered sleeve outer cone inclined-plane form tapered sleeve cone oblique angle, the horn mouth of the outer frustum extruded joint pipe of joint end, by the horn mouth extruding tapered sleeve internal taper hole of connecting tube end and tapered sleeve is bored to oblique angle be squeezed in the connecting tube of realizing tapered sleeve trepanning and connecting tube between nut internal taper hole and connecting tube and seal, the horn mouth of connecting tube end is squeezed in the structural design that realizes horn mouth sealing between the outer frustum of joint and tapered sleeve internal taper hole, it is a contact each other, effect each other, the double sealing structure of reciprocal causation.Tapered sleeve trepanning hole wall and tapered sleeve outer cone inclined-plane form the angle that tapered sleeve cone oblique angle refers to the projection line of tapered sleeve trepanning hole wall and the projection line on tapered sleeve outer cone inclined-plane, cone of the present invention oblique angle is corresponding taper hole, the angle of the center line of frustum and tapered sleeve and its cone inclined-plane projection line, therefore, the tapered sleeve cone oblique angle that tapered sleeve trepanning hole wall and tapered sleeve outer cone inclined-plane form is the angle on tapered sleeve cover centerline hole and tapered sleeve outer cone inclined-plane namely, if there is no tapered sleeve trepanning, just there is no the tapered sleeve cone oblique angle on tapered sleeve, just do not have tapered sleeve cone oblique angle to be compressed in the connecting tube sealing between nut internal taper hole and connecting tube, so, tapered sleeve trepanning is to realize important technology feature of the present invention.Horn mouth in connecting tube end pushes tapered sleeve internal taper hole and tapered sleeve is bored to oblique angle and is squeezed in connecting tube when sealing of realizing tapered sleeve trepanning and connecting tube between nut internal taper hole and connecting tube outside joint under frustum squeezing action, the direction that tapered sleeve cone oblique angle is extruded displacement is vertically connected mobile opposite direction with nut thread, when being compressed in, tapered sleeve cone oblique angle between nut internal taper hole and connecting tube, reaches certain sealing load, tapered sleeve cone oblique angle can be when being subject to the displacement vertically of huge resistance, the tapered sleeve internal taper hole being connected with tapered sleeve cone oblique angle can increase suddenly to bell-mouthed reaction force, tapered sleeve pushes compacted horn mouth by tapered sleeve internal taper hole conversely, the horn mouth of realizing connecting tube end is squeezed in the horn mouth sealing between the outer frustum of joint and tapered sleeve internal taper hole.Therefore, tapered sleeve trepanning bottom is provided with the structural design of tapered sleeve internal taper hole, in fact by tapered sleeve trepanning and tapered sleeve internal taper hole are connected as a single entity, connecting tube sealing and horn mouth sealing are unified into and contact each other, effect each other, the structural design of the double-sealing of reciprocal causation.Original bell mouth expanding connects, moment undue force, excessive, too quickly, horn mouth preparation process, horn mouth quality of materials, the factors such as wall thickness, all likely cause extruding horn mouth break and can not seal, but double sealing structure design of the present invention, when moment undue force, excessive, too quickly while causing horn mouth to break, horn mouth is sealed, sealing yes failure, but cause horn mouth to seal failed moment, but can play the effect of oblique angle extrusion-deformation between nut internal taper hole and connecting tube of further tapered sleeve being bored, because the taper sleeve hole of the present invention design is high, can not be subject to structural limitations and lengthen arbitrarily along centerline direction, thereby can strengthen tapered sleeve trepanning and connecting tube, the crush seal face of tapered sleeve male cone (strobilus masculinus) and nut internal taper hole, crush seal face has strengthened, extruding force also just can correspondingly improve, the effective sealing face of connecting tube sealing is also with regard to corresponding expansion, this will further improve the sealability of connecting tube sealing, until reach target sealing load, realize goal of the invention of the present invention.Tapered sleeve cone oblique angle crush seal movement direction and nut precession direction are in the other direction, refer to that nut is connected precession vertically toward joint direction when moving with joint screw thread, the outer frustum extruding horn mouth of joint and then extruding tapered sleeve cone oblique angle enter between nut internal taper hole and connecting tube, tapered sleeve and tapered sleeve cone oblique angle are done and the rightabout movement of nut movement direction vertically, this has embodied tapered sleeve of the present invention cone oblique angle is in nut internal taper hole, to do the compressional movement of opposite direction displacement with nut internal taper hole and produce the technical characteristics that sealing load and then compressive strain banding connecting tube obtain connecting tube sealing.The shape of tapered sleeve trepanning should be consistent with the shape of connecting tube, and conventionally on air-conditioning, connecting tube is pipe, so tapered sleeve sleeve pipe is straight cylinder endoporus, and the internal orifice dimension of tapered sleeve sleeve pipe only needs to be slightly larger than the external diameter of connecting tube, to meet the use that is sealed and matched.In nut internal taper hole, be provided with matching used tapered sleeve, support the use, refer to footpath at the bottom of the hole of nut internal taper hole, cone oblique angle, Gao，Duan footpath, hole is done to mate design with tapered sleeve relevant position, so that the horn mouth of connecting tube end pushes tapered sleeve internal taper hole and tapered sleeve is bored to oblique angle, is squeezed in the desirable sealing of connecting tube sealing acquisition that realizes tapered sleeve trepanning and connecting tube between nut internal taper hole and connecting tube, support the use also and show, nut internal taper hole and tapered sleeve the two realize in objects of the present invention indispensable.
It is that bell mouth expanding connects the position of the most easily breaking and leaking that horn mouth is torn curved mouth open, original bell mouth expanding connects, when the outer frustum of attaching nut and joint compresses horn mouth, because connecting tube is socketed among nut, between connecting tube and nut, certainly exist cover interporal lacuna, horn mouth is torn curved mouth open and is in just on this gap, when outside joint, frustum pushes horn mouth, horn mouth is torn the extruding force maximum that curved mouth is born open, it is the gap without support force that horn mouth is torn curved mouth opposite side open, therefore, the more difficult control of moment when nut connects, the too small sealing purpose that do not reach, excessive, just there is pressure break horn mouth to tear the danger of curved mouth open.Even temporarily do not break, the bearing capacity that horn mouth is torn curved mouth open is out of shape because of enlarging, extrusion-deformation and decline very large, along with various sewage vitiated airs and condensed water are torn the Long Term Contact of curved mouth open by gap and horn mouth, vibrations while adding connecting tube work etc., horn mouth is torn curved mouth open and has just been become the most easily to break the hidden danger place of generation leakage.But owing to having adopted the horn mouth of connecting tube end to be squeezed in the project organization between the outer frustum of joint and tapered sleeve internal taper hole; when the horn mouth of connecting tube end is squeezed in outside joint between frustum and tapered sleeve internal taper hole; horn mouth tears curved mouth tapered sleeve one side open and tapered sleeve internal taper hole is to push completely closely laminating; now tapered sleeve plays one and sets off protective action; can effectively protect horn mouth to tear curved mouth open, improve horn mouth and torn the bearing capacity of curved mouth open.Also just because of adopted the outer frustum of joint, by the horn mouth of extruded joint pipe end, tapered sleeve is bored to oblique angle, be squeezed in the design that realizes connecting tube sealing between nut internal taper hole and connecting tube, make cover interporal lacuna between nut and connecting tube be squeezed in and between nut internal taper hole and connecting tube, realize the tapered sleeve trepanning that is extruded distortion when tapered sleeve trepanning seals with connecting tube and seal by tapered sleeve cone oblique angle, completely cut off horn mouth and torn curved mouth and extraneous communicating open, thoroughly eliminated extraneous dirty atmosphere, sewage, condensed water and vibration are torn the destroying infection of curved mouth open to horn mouth.The necessary condition that electrochemical corrosion occurs is will be in wet air, among water, completely cut off horn mouth and torn curved mouth and extraneous communicating open, electrochemical corrosion lose necessary condition, also with regard to thorough elimination when joint is connected with dissimilar metal connecting tube, can produce the problem of electrochemical corrosion.Prior art shows, when nut spiral promotes tapered sleeve crush seal, tapered sleeve can be subject to a sideway torque effect, and sideway torque has been the loosening destruction sealing to sealing, sideway torque cross conference cause poorly sealed, so should reduce sideway torque as far as possible.If there is no the horn mouth of the outer frustum extruded joint pipe of joint end, horn mouth by connecting tube end pushes tapered sleeve internal taper hole and tapered sleeve is bored to the structural design that oblique angle is squeezed in the connecting tube sealing that realizes tapered sleeve trepanning and connecting tube between nut internal taper hole and connecting tube, just become not have bell-mouthed straight-through connecting tube to be directly subject to the extruding of the outer frustum of joint, when connecting tube packs in tapered sleeve, if connecting tube pipe end exposes a tapered sleeve part, it is connecting tube that the outer frustum of joint squeezes what push away, now connecting tube and tapered sleeve become flexible, connecting tube is easy to squeezed pushing away and the tapered sleeve that slips away, when connecting tube pipe end is squeezed, shift onto when flushing at the bottom of tapered sleeve internal taper hole, tapered sleeve just can be squeezed, and be direct extruding, now, tapered sleeve design is improper, extruding is firmly uneven, overexert, the sideway torque that nut thread brings to tapered sleeve while connecting precession will be excessive, tapered sleeve when there is vertically relative displacement to obtain sealing with connecting tube because sealing is become flexible in the relative rotation of excessive sideway torque, it is limit sealing, limit is loosening, cannot realize sealing.But the feature of utilizing horn mouth and connecting tube to be connected as a single entity, be designed to the outer frustum of joint by the structure of extruding horn mouth indirect extrusion tapered sleeve internal taper hole, horn mouth is together with connecting tube, tapered sleeve three is that synchronous axial compression is moved, and connecting tube just can not depart from horn mouth and tapered sleeve generation relative sliding has slipped away tapered sleeve.At horn mouth together with connecting tube, when the synchronous axial compression of tapered sleeve three is moved, horn mouth, connecting tube, the moment of torsion that tapered sleeve obtains is almost identical, thereby connecting tube be there is in extruding to rotation relative with tapered sleeve and the possibility of loosening sealing drops to minimum, on the contrary, due to taper sleeve hole height of the present invention, the particular design at tapered sleeve cone oblique angle, make tapered sleeve trepanning and connecting tube, tapered sleeve male cone (strobilus masculinus) is larger with the sealing surface that nut internal taper hole contacts, and sealing is with tapered sleeve cone oblique angle, connecting tube, the crush seal of the surface of contact between nut internal taper hole is main, now, horn mouth, connecting tube, the trickle relative rotation that the sideway torque that tapered sleeve obtains is brought, can play the effect that polishes sealing surface, be conducive on the contrary face crush seal.The outer frustum of joint pushes horn mouth when being connected with nut thread, by horn mouth, push tapered sleeve internal taper hole, thereby promote tapered sleeve cone oblique angle and connecting tube moves along the opposite direction of nut precession simultaneously, tapered sleeve cone oblique angle is more and more closely squeezed between connecting tube and nut internal taper hole, reach joint, horn mouth, nut internal taper hole, tapered sleeve cone oblique angle, the crush seal between connecting tube.Crush seal now, for horn mouth sealing and connecting tube seal the double-sealing of effect simultaneously, thereby sealability is higher, and sealing reliability is stronger.When tapered sleeve and connecting tube move along the opposite direction of nut precession simultaneously, tapered sleeve cone oblique angle is very closely squeezed between connecting tube and nut internal taper hole, in this process, when tapered sleeve cone oblique angle, connecting tube, when nut internal taper hole stops moving in the other direction because of the huge frictional force producing each other, now only need slightly nut to be applied to some moments of torsion, the outer frustum of joint can, further to horn mouth extruding, further improve the outer frustum of joint, horn mouth, the horn mouth sealability between tapered sleeve internal taper hole.
Between threaded interior hole and light wall endoporus, it is nut internal taper hole, it is the formed seal space of nut internal taper hole and connecting tube, that specialized designs is on nut inner hole, and then utilize the tapered sleeve cone oblique angle that the present invention designs to be squeezed in the structural design in nut internal taper hole and the formed seal space of connecting tube, having guaranteed that connecting tube is tightly connected there is not any structural contradiction with the outer frustum of existing joint, thereby reach under the prerequisite that does not change existing air-conditioning joint structure, implement object of the present invention, make the attaching nut of attaching nut of the present invention and prior art there is interchangeability completely.When tapered sleeve cone oblique angle is squeezed in nut internal taper hole and the formed seal space of connecting tube, has also reached and torn horn mouth open curved mouth and the external world isolates object completely.Therefore, nut internal taper hole being set on nut is the important technology feature that realizes the object of the invention.
Attaching nut of the present invention comprises nut and tapered sleeve, and nut can be made into outer-hexagonal shape, is convenient to spanner connection.Cone of the present invention oblique angle is corresponding taper hole, the angle of the center line of frustum and tapered sleeve and its inclined-plane line.The cone oblique angle of the outer frustum of prior art middle joint is 45 degree, when the present invention applies, expands the bell-mouthed cone of connecting tube oblique angle, and the cone oblique angle of tapered sleeve internal taper hole should be identical with the cone oblique angle of the outer frustum of joint, thus guarantee with prior art in attaching nut's absolute interchangeability.
The cone oblique angle of nut internal taper hole is less than the design of 12 degree, determined that nut gets thinner wall thickness just can to guarantee that nut obtains higher internal taper hole hole high meeting under the prerequisite of intensity, internal taper hole is higher, when the extruding at the high tapered sleeve cone oblique angle of corresponding taper sleeve hole connects, the circumferential sealing face that means tapered sleeve cone oblique angle and nut internal taper hole and connecting tube sealing is larger, and the sealability of acquisition is stronger.Nut circular cone table top of the prior art, limited by nut structure, can not do very greatly, connecting tube horn mouth is because will could make through nut, after making, return and be pressed on nut circular cone, so bell-mouthed diameter must be less than the path of nut thread endoporus, therefore, the real compressive plane that participates in crush seal connection is only bell-mouthed surface, this compressive surface is little and big or small fixing, once nut circular cone, horn mouth, on the compressive plane of the outer frustum of joint, there is processing quality problem, material problem, bell mouth expanding connecting means is problem improperly, just be easy to cause horn mouth crush seal failure.But the cone oblique angle of nut internal taper hole is less than the design of 12 degree, make the circumferential sealing face acquisition larger area of tapered sleeve cone oblique angle and connecting tube and the sealing of nut internal taper hole become possibility, and can be by turning cone oblique angle down, add the high design in long nut internal taper hole hole, make tapered sleeve trepanning and connecting tube, the circumferential sealing face of tapered sleeve male cone (strobilus masculinus) and nut internal taper hole obtains and tunes up, then by strengthening extruding force, reaches the seal request needing.The cone oblique angle of nut internal taper hole is less than the design of 12 degree, also can make the whole wall thickness of tapered sleeve thinner, is easy to be extruded distortion, with abundant deformable seal in nut internal taper hole and the formed space of connecting tube.
Tapered sleeve cone oblique angle is equal to or less than the cone oblique angle of nut internal taper hole, is when being extruded, to be all squeezed into nut internal taper hole in order to ensure tapered sleeve cone oblique angle, and to guarantee tapered sleeve cone oblique angle and nut internal taper hole, tapered sleeve trepanning farthest seals and contacts with connecting tube.Conventionally the cone oblique angle of getting tapered sleeve equals the cone oblique angle of nut internal taper hole, or the cone oblique angle of tapered sleeve is less than cone oblique angle 1 to 2 degree of nut internal taper hole.
Taper sleeve hole height and nut internal taper hole height are all greater than 3mm, and tapered sleeve trepanning is tall and big in 2mm.Be to obtain a circumferential sealing face that is enough to meet seal request while boring oblique angle and connecting tube sealing in order to ensure tapered sleeve, particularly tapered sleeve trepanning is high, if too short, probably causes the connecting tube sealing of tapered sleeve trepanning and connecting tube not reach seal request.During practical application, the high suggestion of tapered sleeve trepanning is greater than 6mm.
At the bottom of nut internal taper hole, footpath equals to be greater than footpath at the bottom of taper sleeve hole, in order meet to connect, tapered sleeve can all be squeezed among nut internal taper hole, makes tapered sleeve and nut internal taper hole, and what between tapered sleeve and connecting tube, reach maximum area is tightly connected to obtain best sealing effect.Otherwise, at the bottom of footpath is less than taper sleeve hole at the bottom of nut internal taper hole, during footpath, just likely occurs that tapered sleeve is withstood and cannot squeeze by nut internal taper hole, thereby cannot complete crush seal, do not reach the situation of sealing purpose of the present invention and effect.At the bottom of nut internal taper hole, footpath equals to be greater than footpath at the bottom of the outer frustum of joint, be in order to ensure the outer frustum of joint by the bell-mouthed extruding of connecting tube, and then tapered sleeve is all squeezed among nut internal taper hole, to guarantee to connect, reach desirable sealing effect.Otherwise, when footpath at the bottom of nut internal taper hole is less than outside joint at the bottom of frustum footpath, just likely occur that the outer frustum of joint is when pushing horn mouth and then tapered sleeve is squeezed among nut internal taper hole, the outer frustum of joint touches the nut circular cone that nut processing technology is brought, and cannot continue extruding problem, be tightly connected and cannot complete.In Fig. 2,15a is the nut circular cone that nut processing technology is brought.
The present invention can be provided with an interior circular bosses at nut internal taper hole afterbody; with connecting tube; tapered sleeve cone oblique angle encloses an annular groove; can guarantee that nut internal taper hole and tapered sleeve cone oblique angle are in certain fabrication error; to tapered sleeve cone oblique angle, increase by one and can further push vertically mobile distance; to reach the object being tightly squeezed between nut internal taper hole and connecting tube, further guarantee to obtain desirable sealing effect.The present invention also can arrange seal ring between frustum in annular groove and outside joint outside thread and joint, by pressing straddle type to push to seal ring herein, the sealing of connecting pipeline is played to the effect of further raising sealability, meanwhile, after Double seal ring is compressed on its relevant position, can produce an elastic force effect, effectively provide to stop to connect loosening moment.The present invention also can be in joint and nut thread joint, the outer frustum of joint, and connecting tube horn mouth, tapered sleeve, the connecting part between nut internal taper hole, applies metal anaerobic adhesive.Apply metal anaerobic adhesive, not only can provide sealability, high anti-dismounting force moment also can be provided, there is the loosening ability of more reliable anti-connection, apply metal anaerobic adhesive, the prevention dismounting force moment increasing is nut with more than the decades of times being threaded of joint, may dismantle hardly under normal circumstances, thereby become possibility for being applied on the R290 refrigerant system that requires non-removable connecting tube connection.The present invention again can be at joint and nut; the connection part of nut and connecting tube puts heat-shrinkable T bush; can better connection part be hedged off from the outer world, be conducive to protect horn mouth and horn mouth to tear the sealability of curved mouth open, guarantee that the present invention connects the long-term reliability of high quality seal.Nut in the present invention can adopt brass, stainless steel, and superior alloy steel, the metallic material such as aluminum alloy are made.Tapered sleeve material is with red copper, brass, and aluminum alloy is good.When the present invention being applied in to being connected of copper sleeve and aluminium and aluminium alloy pipe, the material of nut adopts stainless steel, superior alloy steel, tapered sleeve material adopts aluminum alloy or red copper, brass, although in nut, the outer frustum of copper sleeve is directly to contact with aluminium connecting tubes pipe end horn mouth, prior art shows, refrigeration agent in the inside system of contacting point can not make to produce electrochemical corrosion between copper aluminium, outside contacting point, side clearance is again by tapered sleeve trepanning sealing blocking of the present invention, this just can be avoided original horn mouth to connect effectively, copper fasten aluminium is because directly contacting and communicate with the external world and produce the problem of electrochemical corrosion again.When connecting tube tubing is steel, the material of nut adopts stainless steel, superior alloy steel, and tapered sleeve material adopts alloyed steel.Along with the development of technology, the application of aluminum alloy stop valve, aluminum alloy joint also there will be on connecting tube connects.When joint material is aluminum alloy, the material of nut can adopt corresponding aluminum alloy, alloyed steel, and stainless steel, tapered sleeve material adopts aluminum alloy all can.
The present invention is the double-sealing design of horn mouth sealing and connecting tube sealing, add seal ring, the auxiliary seal of metal anaerobic adhesive, these four kinds of sealings provide when far surpassing original bell mouth expanding connection sealability, can be being all threaded of nut and joint, Anti-dismantling moment is provided.The length of nut light cinclides, looks during practice and connects sealing needs, changeable.The gap of nut light cinclides and connecting tube seals by metal anaerobic adhesive, when shutoff communicates with the external world, metal anaerobic adhesive can provide a powerful Anti-dismantling moment to nut light cinclides, the Anti-dismantling moment providing can be by adjusting the length of long nut light cinclides to tune up, even as big as till meeting R290 refrigerant system the Anti-dismantling of Placement being required.
Owing to having adopted technique scheme, the present invention has following main feature:
1, the double-sealing design of horn mouth sealing and connecting tube sealing, add seal ring, the auxiliary seal design of metal anaerobic adhesive, make sealability of the present invention, the sealability connecting than original expansion loudspeaker has had the raising of matter, thereby is enough to meet R410a, R32, the working condition requirement of the refrigerant system that R290 etc. are new.
2, set off protection and tapered sleeve trepanning that tapered sleeve internal taper hole is torn curved mouth open to horn mouth have completely cut off horn mouth and have torn communicating of curved mouth and the external world open with the sealing of connecting tube, effectively protected horn mouth to tear the bearing capacity of curved mouth open, have increased the effective life that connection seals.
3, the present invention can not increase connection difficulty, do not increase in the situation of link cost, what to be directly applied in joint be unlike material with connecting tube is connected, particularly be applied in copper sleeve and Al-alloy pipe be connected and copper sleeve with being connected of steel connecting tube without the problem of electrochemical corrosion, substitute original copper pipe and connect, economic benefit is obvious.
4, the attaching nut on the present invention and existing air-conditioning has interchangeability completely, can not change under the prerequisite of existing air-conditioning joint structure, replaces the attaching nut on existing air-conditioning.
Figure of description 1 is structural representation of the present invention.
Figure of description 2 is nuts of the present invention.
Figure of description 3 is tapered sleeves of the present invention.
Figure of description 4 is structural representations that prior art bell mouth expanding connects.
tool part mode of execution
Below in conjunction with drawings and Examples, the invention will be further described:
Accompanying drawing 1, accompanying drawing 2, accompanying drawing 3, in accompanying drawing 4,1 is joint, 2 for being threaded, 3 is seal ring, 4 is nut, 5 is the outer frustum of joint, 6 is footpath at the bottom of the outer frustum of joint, 7 is nut internal taper hole, 8 is connecting tube horn mouth, 9 tear curved mouth open for horn mouth, 10 is tapered sleeve, 11 is nut annular groove, 12 is seal ring, 13 is connecting tube, 14 is nut thread endoporus, 15a is nut circular cone, 15 is footpath at the bottom of nut internal taper hole, 16 is nut internal taper hole cone oblique angle, 17 is that nut internal taper hole hole is high, 18 is nut inner cone nose end footpath, 19 is nut light wall endoporus, 20 is footpath at the bottom of taper sleeve hole, 21 is tapered sleeve internal taper hole, 22 is tapered sleeve cone oblique angle, 22a is tapered sleeve trepanning, 23 taper sleeve holes are high, 23a is that tapered sleeve trepanning is high, 24 is tapered sleeve cover nose end footpath, 25 is nut circular cone, 26 is nut sleeve interporal lacuna.
Embodiment: accompanying drawing 1 is linkage structure schematic diagram of the present invention.In Fig. 1,1 is jointing of the prior art, and in Fig. 1,4 for nut of the present invention, and nut of the present invention comprises in Fig. 1 tapered sleeve 10 in nut 4 and Fig. 1.In Fig. 1,2 to be nut 4 and joint 1 be threaded.Connecting tube 13 is packed into nut light wall endoporus 19, through nut 4, tapered sleeve 10 is packed into connecting tube 13, at connecting tube pipe end bell mouth expanding 8, then, pinch on the other hand nut 4, one pulls connecting tube 13, connecting tube horn mouth 8 is drawn in nut internal taper hole 7 together with tapered sleeve 10, until that feel is drawn is motionless, and then, by the threaded interior hole in nut 4 14 be connected joint 1 and be threaded 2, until feel cannot turn, pass through again spanner, till nut 4 is imposed to suitable moment, the horn mouth 8 of the outer frustum of joint 5 extruded joint pipe ends now, by the horn mouth 8 extruding tapered sleeve internal taper holes 7 of connecting tube end and tapered sleeve is bored to oblique angle 22 be squeezed in the connecting tube of having realized tapered sleeve trepanning 22a and connecting tube 13 between nut internal taper hole 7 and connecting tube 13 and seal, suitably afterburning to nut 4 again, the horn mouth 8 of connecting tube end is squeezed between the outer frustum 5 of joint and tapered sleeve internal taper hole 21 and has realized horn mouth sealing.Horn mouth is torn curved mouth 9 open and after being extruded, is fitted in completely on tapered sleeve internal taper hole 21, and 21 pairs of horn mouths of tapered sleeve internal taper hole are torn curved mouth 9 open and played and set off protective action.The present invention can fitted seal circle and the use of metal anaerobic adhesive, is applied in sealing and the higher connection of anti-loosening requirement.Using method is, tapered sleeve 10 is packed into before connecting tube 13, seal ring 12 is put to connecting tube 13 pipe outer walls, from connecting pipe end, approximately slightly surpassing on the position of taper sleeve hole high 23, while then connecting tube horn mouth 8 being drawn in nut internal taper hole 7 together with tapered sleeve 10, seal ring 12 is bored the crowded nut annular groove 11 that pushes in oblique angle 22 by tapered sleeve.Same, nut 4 being threaded with the joint 1 being connected before 2, between seal ring 3 cover upper connection outside threads and the outer frustum 5 of joint, then according to the rapid connection of above-mentioned portion.After bell mouth expanding, at 2 places that are threaded, horn mouth 8, all surface of tapered sleeve 10, on the tube-surface of the connecting tube 13 of nut internal taper hole hole high 17 and the high 23 contour length of taper sleeve hole, applies metal anaerobic adhesive, and all the other follow-up connecting means are identical.Increased the design of seal ring and metal anaerobic adhesive, can play the anti-loosening effect of further sealing and fixing, also can play and together with horn mouth, tear horn mouth 8 open curved mouth 9 and be hedged off from the outer world, keep it not weather, avoid electrochemical corrosion, alleviate the impact of vibration and the effect that improves Anti-dismantling moment.For the material of seal ring and the model of anaerobic adhesive, the hydrogenation nitrile rubber seal ring of the resistance to refrigerant system of recommend adoption of the present invention and 554 anaerobic adhesives of resistance to refrigerant system.When the present invention is applied in to connecting tube that joint 1 material is dissimilar materials with connecting tube 13 materials and is connected, 4, nut should be take stainless steel nut as good, and stainless steel is non-active material, the electrochemical reaction between being connected with dissimilar metal extremely a little less than, almost negligible.After having connected by joint 1, nut 4, connecting tube 13 connects connecting parts and puts in addition further isolated protection to external world of heat-shrinkable T bush, remarkable to the sealing validity effect steady in a long-term connecting.In Fig. 4,25 is nut circular cone in existing bell mouth expanding interconnection technique, in order to the horn mouth 8 with outer frustum 5 extruded joint pipes 13 of joint of the prior art, implement to be tightly connected, in Fig. 4,26 for prior art bell mouth expanding connects the nut sleeve interporal lacuna between rear pipe itself and nut trepanning, communicates with the external world.Nut inner cone nose end footpath 18 is slightly larger than tapered sleeve cover nose end footpath 24, is conventionally greater than the requirement that 1mm can meet nut annular groove 11, and nut annular groove 11 length is vertically got 2 to 4mm length for good.Tapered sleeve cover nose end footpath 24 only needs to be slightly larger than connecting tube 13 external diameters, as long as can meet, packs into connecting tube, and it is good building both phase differences in 0.1mm.Conventionally in the tolerance range of process conditions, tapered sleeve cover nose end footpath 24 is more approaching with the external diameter of connecting tube 13, and the effect that is tightly connected is better.In Fig. 2,15a is the nut circular cone that nut processing technology is brought, 25 identical with Fig. 4.
Air-conditioning of the present invention is air regulator, comprises by refrigerant system air is carried out to the device element that energy shifts adjusting.As domestic air conditioning, central air-conditioner, car air conditioner, heat pump water heater etc.
Claims (5)
1. an attaching nut who is exclusively used in split-type air conditioner refrigeration agent connecting pipeline, comprise the joint on indoor set and outdoor unit, the horn mouth of the outer frustum of joint and connecting tube end, it is characterized in that: attaching nut one has the nut of inner via hole, nut inner via hole is divided into threaded interior hole and light wall endoporus, between threaded interior hole and light wall endoporus, it is nut internal taper hole, in nut internal taper hole, be provided with matching used tapered sleeve, tapered sleeve is the tapered sleeve trepanning of hollow, tapered sleeve trepanning bottom is provided with tapered sleeve internal taper hole, tapered sleeve trepanning hole wall and tapered sleeve outer cone inclined-plane form tapered sleeve cone oblique angle, the horn mouth of the outer frustum extruded joint pipe of joint end, by the horn mouth extruding tapered sleeve internal taper hole of connecting tube end and tapered sleeve is bored to oblique angle be squeezed in the connecting tube of realizing tapered sleeve trepanning and connecting tube between nut internal taper hole and connecting tube and seal, the horn mouth of connecting tube end is squeezed between the outer frustum of joint and tapered sleeve internal taper hole and realizes horn mouth sealing, tapered sleeve cone oblique angle crush seal movement direction and nut precession direction are in the other direction.
2. the attaching nut of refrigeration agent connecting pipeline according to claim 1, is characterized in that: nut internal taper hole cone oblique angle is less than 12 degree.
3. the attaching nut of refrigeration agent connecting pipeline according to claim 1, is characterized in that: tapered sleeve cone oblique angle is equal to or less than nut internal taper hole cone oblique angle.
4. the attaching nut of refrigeration agent connecting pipeline according to claim 1, is characterized in that: taper sleeve hole height and nut internal taper hole height are all greater than 4mm, and tapered sleeve trepanning is tall and big in 2mm.
5. the attaching nut of refrigeration agent connecting pipeline according to claim 1, is characterized in that:, at the bottom of nut internal taper hole, footpath equals to be greater than footpath at the bottom of taper sleeve hole, and at the bottom of nut internal taper hole, footpath equals to be greater than footpath at the bottom of the outer frustum of joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310126968.4A CN103604012B (en) | 2013-04-13 | 2013-04-13 | A kind of connector element being exclusively used in split-type air conditioner connecting refrigerant lines road |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310126968.4A CN103604012B (en) | 2013-04-13 | 2013-04-13 | A kind of connector element being exclusively used in split-type air conditioner connecting refrigerant lines road |
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| CN103604012A true CN103604012A (en) | 2014-02-26 |
| CN103604012B CN103604012B (en) | 2015-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310126968.4A Expired - Fee Related CN103604012B (en) | 2013-04-13 | 2013-04-13 | A kind of connector element being exclusively used in split-type air conditioner connecting refrigerant lines road |
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| CN (1) | CN103604012B (en) |
Cited By (11)
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| CN103604013A (en) * | 2013-05-05 | 2014-02-26 | 孙海潮 | Pipeline connection pipe fitting |
| WO2015120608A1 (en) * | 2014-02-13 | 2015-08-20 | 孙海潮 | Connection screw nut for dedicated use in split air conditioning refrigerant connection pipelines |
| CN105107972A (en) * | 2015-09-16 | 2015-12-02 | 中山市博特机械厂 | U-shaped copper pipe type air expansion pipe device of radiator |
| WO2016065651A1 (en) * | 2014-11-01 | 2016-05-06 | 孙海潮 | Pipe fitting for pipeline connection |
| WO2016065648A1 (en) * | 2014-11-01 | 2016-05-06 | 孙海潮 | Pipe fitting for pipeline connection |
| CN105972713A (en) * | 2016-06-24 | 2016-09-28 | 海信（山东）空调有限公司 | Coupling pipe structure of air conditioner and air conditioner |
| CN106644286A (en) * | 2016-12-23 | 2017-05-10 | 湖北三江航天红峰控制有限公司 | Low-temperature stop valve sealing fixing device |
| CN109084102A (en) * | 2017-06-14 | 2018-12-25 | 班博鲁工贸有限公司 | A kind of assembling pipe joint |
| CN110864168A (en) * | 2018-08-27 | 2020-03-06 | 吴炯东 | Refrigerant pipe connection structure |
| CN110985777A (en) * | 2019-12-25 | 2020-04-10 | 中国航空工业集团公司西安飞机设计研究所 | Oxygen pipeline sealing performance improving method |
| CN114166563A (en) * | 2021-12-17 | 2022-03-11 | 重庆交通职业学院 | Civil engineering detects uses drilling equipment |
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| US1920512A (en) * | 1931-12-19 | 1933-08-01 | John Waugh | Pipe coupling |
| US2435261A (en) * | 1944-06-03 | 1948-02-03 | George V Woodling | Coupling device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2014180179A1 (en) * | 2013-05-05 | 2014-11-13 | Sun Haichao | Connecting pipe fitting for pipeline |
| CN103604013A (en) * | 2013-05-05 | 2014-02-26 | 孙海潮 | Pipeline connection pipe fitting |
| CN103604013B (en) * | 2013-05-05 | 2015-12-09 | 孙海潮 | A kind of connecting pipe fitting for pipeline |
| WO2015120608A1 (en) * | 2014-02-13 | 2015-08-20 | 孙海潮 | Connection screw nut for dedicated use in split air conditioning refrigerant connection pipelines |
| WO2016065648A1 (en) * | 2014-11-01 | 2016-05-06 | 孙海潮 | Pipe fitting for pipeline connection |
| WO2016065651A1 (en) * | 2014-11-01 | 2016-05-06 | 孙海潮 | Pipe fitting for pipeline connection |
| CN105107972A (en) * | 2015-09-16 | 2015-12-02 | 中山市博特机械厂 | U-shaped copper pipe type air expansion pipe device of radiator |
| CN105972713A (en) * | 2016-06-24 | 2016-09-28 | 海信（山东）空调有限公司 | Coupling pipe structure of air conditioner and air conditioner |
| CN106644286A (en) * | 2016-12-23 | 2017-05-10 | 湖北三江航天红峰控制有限公司 | Low-temperature stop valve sealing fixing device |
| CN106644286B (en) * | 2016-12-23 | 2019-01-18 | 湖北三江航天红峰控制有限公司 | A kind of cryogenic globe valve sealed fixing device |
| CN109084102A (en) * | 2017-06-14 | 2018-12-25 | 班博鲁工贸有限公司 | A kind of assembling pipe joint |
| CN110864168A (en) * | 2018-08-27 | 2020-03-06 | 吴炯东 | Refrigerant pipe connection structure |
| CN110985777A (en) * | 2019-12-25 | 2020-04-10 | 中国航空工业集团公司西安飞机设计研究所 | Oxygen pipeline sealing performance improving method |
| CN114166563A (en) * | 2021-12-17 | 2022-03-11 | 重庆交通职业学院 | Civil engineering detects uses drilling equipment |
| CN114166563B (en) * | 2021-12-17 | 2023-09-26 | 重庆交通职业学院 | Drilling device for civil engineering detection |
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