CN216813307U - Jacket rotating joint for fluid medium loading and unloading vehicle - Google Patents

Abstract

The utility model discloses a jacket rotary joint for a fluid medium loading and unloading truck, which comprises a rotary inner core cylinder and a rotary outer shell cylinder, wherein the rotary inner core cylinder and the rotary outer shell cylinder are coaxially arranged and can relatively rotate; the inner core rotating cylinder comprises an inner core outer pipe and an inner core inner pipe which are nested, and a first interlayer channel communicated with the steam inlet is formed between the inner core outer pipe and the inner core inner pipe; the rotary shell barrel comprises an upper shell barrel, a middle shell barrel and a lower shell barrel which are integrally connected, and a second interlayer channel communicated with the steam outlet is formed between the middle shell barrel and the lower shell barrel. The first interlayer channel is communicated with the second interlayer channel and is used for conveying steam. The scheme improves the processing and mounting precision of the device through the improvement of the structure, and effectively prolongs the service life and the sealing effect of the device through the high-precision mounting and use of each part.

Description

Jacket rotating joint for fluid medium loading and unloading vehicle

Technical Field

The utility model belongs to the technical field of fluid medium loading and unloading vehicles, and particularly relates to a jacket rotary joint for a fluid medium loading and unloading vehicle.

Background

The loading arm is a special device in the process of loading and unloading fluid in the petrochemical industry and is also called a fluid loading and unloading arm. The rotary joint is connected with the rigid pipeline and the elbow to realize the movable equipment for transmitting liquid media between trains, automobiles, ships, airplanes and the like and the storage and transportation pipeline of the trestle to replace the old hose connection, and the rotary joint has the characteristics of high safety, flexibility, long service life and the like. It is an ideal special equipment for receiving and dispatching oil material, and can be widely used for receiving and dispatching various liquid raw materials in chemical industry and other industries.

In the prior art, a rotator matched with a crane pipe utilizes a framework for sealing, but the rotator is found to have at least the following required improvement parts through long-term practice, firstly, through a period of time of practice, the service life of the framework for sealing is found to be short, the leakage is easily caused after long-term use, secondly, the total weight of the rotator with the crane pipe is hundreds of kilograms, the rotator is a steel structure, the structure of the rotator in the prior art has weaker axial bearing capacity, the service life of the rotator is reduced, thirdly, in the original structure, the framework sealing, the positioning steel balls and other rotating components are positioned on a plurality of components, so that the coaxial processing can not be carried out, the processing precision is lower, after equipment is assembled, because the installation deflection of a contact gap is easy to occur due to large processing error, the assembly precision of the device is low, the normal use of the whole device is influenced, and the service life of the device is shortened. Therefore, in view of the above technical problems, it is desirable to provide a new structure of a rotating joint for a clamping sleeve of a loading arm of a loading/unloading vehicle.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems in the prior art and provide a jacket rotary joint for a fluid medium loading and unloading truck.

In order to achieve the purpose, the utility model adopts the following technical scheme: a jacket rotary joint for a fluid medium loading and unloading truck comprises a rotary inner core cylinder and a rotary outer shell cylinder, wherein the rotary inner core cylinder and the rotary outer shell cylinder are both hollow cylindrical structures, the rotary inner core cylinder is arranged in the rotary outer shell cylinder, and the rotary inner core cylinder and the rotary outer shell cylinder are coaxially arranged and can rotate relatively; the inner core rotating cylinder comprises an inner core outer pipe and an inner core inner pipe which are nested, a first interlayer channel communicated with the steam inlet is formed between the inner core outer pipe and the inner core inner pipe, and a plurality of first through holes which are annularly arranged along the pipe wall of the inner core outer pipe close to the lower end are formed on the pipe wall of the inner core outer pipe; the rotary shell barrel comprises an upper shell barrel, a middle shell barrel and a lower shell barrel which are integrally connected, a plurality of second through holes which are annularly arranged along the pipe wall of the middle shell barrel and the middle shell barrel are formed on the middle shell barrel in a surrounding mode, and a second interlayer channel communicated with a steam outlet is formed between the middle shell barrel and the lower shell barrel. The first interlayer channel and the second interlayer channel are communicated through the first through hole and the second through hole and used for conveying steam.

Preferably, an annular sealing groove I and a steel ball outer groove are formed in the inner wall of the middle and outer shell cylinders on the upper and lower sides of the second through hole respectively, a sealing element is arranged in the annular sealing groove I, a steel ball inner groove matched with the steel ball outer groove is formed in the tube wall of the inner core outer tube, and the steel ball outer groove and the steel ball inner groove are in butt joint to form a containing space for positioning steel balls.

Preferably, the sealing member is a UHS sealing ring.

As a preferred scheme, the pipe walls of the middle and outer shell cylinders and the inner core outer pipe are further sealed through O-shaped sealing rings, and annular sealing grooves II used for mounting the O-shaped sealing rings are formed in the inner walls of the middle and outer shell cylinders.

Preferably, a step structure for installing the positioning bearing is formed on the inner wall of the upper shell cylinder.

Preferably, the step structure comprises a first step and a second step, the first step is positioned on one side of the second step close to the outer end, the first step is internally used for installing a conical bearing, the second step is internally used for installing a planar bearing, and a bearing retainer ring is arranged between the conical bearing and the planar bearing.

Preferably, the outer side of the conical bearing is fixed by a positioning sleeve.

Preferably, flower-shaped gaskets are arranged between the end flange I of the rotary inner core cylinder and the end flange II of the rotary outer shell cylinder and the mating flanges respectively, holes for passing a heating medium are formed in positions, corresponding to the steam inlet or the steam outlet, of the flower-shaped gaskets, and the holes are distributed annularly.

Preferably, the upper outer shell, the middle outer shell and the lower outer shell are integrally welded.

Preferably, the positioning sleeve and the inner rotating core cylinder are sealed through an O-shaped sealing ring.

Advantageous effects

The utility model comprises a rotary inner core cylinder and a rotary outer shell cylinder, wherein a sealing ring seal and a steel ball positioning are arranged between the rotary outer shell cylinder and the rotary inner core cylinder, and a steel ball positioning groove and an annular sealing groove are arranged on the middle outer shell cylinder and the outer shell cylinder.

Secondly, the utility model considers that the crane pipe and the whole rotary joint connected with the crane pipe are heavy in weight, and in order to enhance the axial load capacity of the device, a double step for installing a conical bearing and a plane bearing is particularly arranged on the upper shell barrel, wherein the conical bearing can provide axial load, and the plane bearing can provide radial load and positioning between two parts.

And thirdly, in consideration of the service life of the sealing element, the framework sealing adopted in the prior art is improved into the UHS sealing of the device, so that the service life of the device is prolonged, and meanwhile, in order to further improve the sealing effect, double sealing structures such as UHS sealing rings, O-shaped sealing rings and the like are respectively adopted at two sides of the heating medium through hole.

And fourthly, after the component is improved, the interlayer channel matched with the component and used for passing the heating medium is arranged, wherein the interlayer channel comprises a first interlayer channel positioned in the rotary inner core cylinder and a second interlayer channel positioned in the rotary outer shell cylinder, and the first interlayer channel and the second interlayer channel are in butt joint communication by adopting a first through hole and a second through hole, so that the problem of communication and conveying of the heating medium between two rotary components is well solved.

Drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is an overall structural view of a rotary joint for a jacket according to the present invention;

FIG. 2 is an internal structural view of a spin-on core barrel;

FIG. 3 is an internal structural view of the spin case cartridge;

the labels in the figure are: 1. the inner core screwing device comprises an inner core screwing barrel, 11, an inner core outer pipe, 111, a steel ball inner groove, 12, an inner core inner pipe, 13, an inner core lower plug, 14, an inner core upper plug, 15, end flanges I and 16, a first through hole, 2, an outer core screwing barrel, 21, an upper outer shell barrel, 22, a middle outer shell barrel, 221, an annular sealing groove I and 222, a steel ball outer groove, 223, an annular sealing groove II and 224, positioning steel balls, 225, an UHS sealing ring, 226 and an O-shaped sealing ring, 23, a lower outer shell barrel, 24, a conical bearing, 25, a plane bearing, 26, a bearing retainer ring, 27, end flanges II and 28, a second through hole, 3, a positioning sleeve, 4, a flower-shaped gasket, 5, a mating flange, 100, a steam inlet, 200 and a steam outlet.

Detailed Description

The utility model is described in detail below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.

It should be noted that: unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of the terms "a" and "an" or "the" and similar referents in the description and claims of the present invention are not to be construed as limiting in number, but rather as indicating the presence of at least one. The word "comprise" or "comprises", and the like, indicates that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, but does not exclude other elements or items having the same function.

As shown in fig. 1, the present embodiment provides a jacket rotary joint for a fluid medium loading and unloading vehicle, which includes a rotary inner core cylinder 1 and a rotary outer shell cylinder 2 that are coaxially disposed, both the rotary inner core cylinder 1 and the rotary outer shell cylinder 2 are hollow cylindrical structures, both the rotary inner core cylinder 1 and the rotary outer shell cylinder 2 are formed with jacket spaces for steam to pass through, and the jacket spaces of the two cylinders are used for steam transmission through a through hole for heat tracing of a fluid medium inside the cylinders, and a skeleton seal in the prior art is changed into a UHS seal in the present application, so as to prolong the service life of the device, and simultaneously, rationalize and improve the structure of the device. Through not only having guaranteed the axiality of each machining position after improving, having promoted the installation accuracy of device, the axial load capacity of device promotes greatly simultaneously.

The structure of the spin core barrel 1 is specifically analyzed as follows: as shown in fig. 2, the spiral inner core tube 1 is inserted into the spiral outer shell tube 2 from top to bottom, the spiral inner core tube 1 includes an end flange i 15, and an inner core outer tube 11 and an inner core inner tube 12 which are nested, the inner core outer tube 11 and the inner core inner tube 12 are located on one side of a lower end face of the end flange i 15, a first interlayer channel for steam to pass through is formed between the inner core outer tube 11 and the inner core inner tube 12, an upper end of the first interlayer channel is open, a lower end of the first interlayer channel is sealed by an inner core lower plug 13, an inner core upper plug 14 is arranged between the inner core outer tube 11 and the end flange i 15, a plurality of first through holes 16 circumferentially arranged along a tube wall of the inner core outer tube 11 are formed on a tube wall of the inner core outer tube 11 close to the lower end, and steam enters from a steam inlet 100 and is discharged from the first through holes 16.

The structure of the spin housing cartridge 2 was specifically analyzed as follows: as shown in fig. 3, the spiral casing 2 includes an upper casing 21, a middle casing 22, a lower casing 23 and an end flange ii 27 integrally welded from top to bottom, wherein a plurality of second through holes 28 communicated with the first through holes 16 are formed on the middle casing 22 along the pipe wall in a surrounding manner, and a second interlayer channel communicated with the second through holes 28 is formed between the middle casing 22 and the lower casing 23.

Specifically, 12-18 first through holes 16 and second through holes 28 are respectively arranged, and are all arranged on the wall of the barrel in a surrounding and uniform distribution manner along the circumferential direction of the central axis of the barrel, the internal rotating core barrel 1 and the external rotating shell barrel 2 can rotate relatively, and because a gap can be formed between the internal rotating core barrel 1 and the external rotating shell barrel 2, when the first through holes 16 and the second through holes 28 do not completely correspond to each other, the steam circulation between the two cannot be influenced.

In the scheme, an annular sealing groove I221 and a steel ball outer groove 222 are respectively formed on two sides of the second through hole 28 on the inner wall of the outer shell cylinder 22, a UHS sealing ring 225 is arranged in the annular sealing groove I221, a steel ball inner groove 111 matched with the steel ball outer groove 222 is formed on the tube wall of the inner core outer tube 11, and the steel ball outer groove 222 and the steel ball inner groove 111 are butted to form a containing space for positioning a steel ball 224. In the scheme, the pipe walls of the middle and outer shell 22 and the inner core outer pipe 11 are sealed by an O-shaped sealing ring 226, and an annular sealing groove II 223 for mounting the O-shaped sealing ring 226 is formed in the middle and outer shell 22.

In this embodiment, the upper outer shell 21, the middle outer shell 22, the lower outer shell 23 and the end flange ii 27 are integrally formed by welding, and after welding, the inner wall of the middle outer shell 22 is machined on a machine tool. Therefore, the plurality of annular seal grooves, the steel ball outer grooves 222 and the like on the inner wall of the middle outer shell cylinder 22 can be synchronously processed, the coaxiality can be ensured, the processing and assembling precision of the device can be greatly improved, and the service life of the device can be effectively prolonged.

In the scheme, a step structure for mounting the positioning bearing is formed on the inner wall of the upper shell barrel 21. The step structure comprises a first step and a second step, the first step is located on one side, close to the outer end, of the second step, the first step is internally used for installing a conical bearing 24, the second step is internally used for installing a plane bearing 25, a bearing retainer ring 26 is arranged between the conical bearing 24 and the plane bearing 25, the distance between the two bearings can be increased, and the whole device is more stable after being assembled. The outer side of the conical bearing 24 is fixed by the locating sleeve 3. Wherein the flat bearing 25 mainly plays a role of radial positioning, and the conical bearing 24 mainly serves to increase the axial bearing capacity of the device. Specifically, the positioning sleeve 3 and the rotary inner core barrel 1 are sealed by an O-ring 226, so as to seal the joint surface of the positioning sleeve 3 and the rotary inner core barrel 1.

According to the scheme, the end flange I15 of the inner rotating core cylinder 1 and the end flange II 27 of the outer rotating shell cylinder 2 are connected with the companion flange 5 through the pattern gasket 4, holes for steam to pass through are formed in the pattern gasket 4, the number of the holes is set to be multiple, for example, 12-16, the holes are uniformly distributed along the center ring of the annular gasket 4, and meanwhile, the hole positions of the upper and lower pattern gaskets 4 correspond to the steam inlet 100 and the steam outlet 200 and are respectively communicated with the steam inlet and the steam outlet.

In the scheme, the heat tracing steam enters the first interlayer channel from the steam inlet 100, enters the second interlayer channel through the first through hole 16 and the second through hole 28, and is discharged from the steam outlet 200, and the heated material enters the barrel body of the inner rotating core barrel 1 from one end of the barrel body and is discharged from the other end of the barrel body.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims (10)

1. A collet swivel joint for a fluid media handling vehicle, characterized by: the spiral inner core barrel is characterized by comprising a spiral inner core barrel (1) and a spiral outer shell barrel (2), wherein the spiral inner core barrel (1) and the spiral outer shell barrel (2) are both hollow cylindrical structures, the spiral inner core barrel (1) is installed inside the spiral outer shell barrel (2), and the spiral inner core barrel and the spiral outer shell barrel are coaxially arranged and can rotate relatively;

the inner core rotating cylinder (1) comprises an inner core outer pipe (11) and an inner core inner pipe (12) which are nested, a first interlayer channel communicated with the steam inlet (100) is formed between the inner core outer pipe (11) and the inner core inner pipe (12), and a plurality of first through holes (16) which are annularly arranged along the pipe wall of the inner core outer pipe (11) close to the lower end are formed on the pipe wall of the inner core outer pipe (11);

the rotary outer shell barrel (2) comprises an upper outer shell barrel (21), a middle outer shell barrel (22) and a lower outer shell barrel (23) which are integrally connected, a plurality of second through holes (28) which are annularly arranged along the pipe wall of the middle outer shell barrel are formed on the middle outer shell barrel (22) in an encircling mode, and a second interlayer channel which is communicated with the steam outlet (200) is formed between the middle outer shell barrel (22) and the lower outer shell barrel (23);

the first interlayer channel and the second interlayer channel are communicated through a first through hole (16) and a second through hole (28) and used for conveying steam.

2. A jacketed swivel joint for a fluid medium handling vehicle as claimed in claim 1 wherein: an annular sealing groove I (221) and a steel ball outer groove (222) are formed in the inner wall of the middle outer shell barrel (22) on the upper side and the lower side of the second through hole (28) respectively, a sealing element is arranged in the annular sealing groove I (221), a steel ball inner groove (111) matched with the steel ball outer groove (222) is formed in the wall of the inner core outer tube (11), and the steel ball outer groove (222) and the steel ball inner groove (111) are in butt joint to form a containing space for positioning the steel ball (224).

3. A jacketed swivel joint for a fluid medium handling vehicle as claimed in claim 2 wherein: the sealing element adopts a UHS sealing ring (225).

4. A jacketed swivel joint for a fluid medium handling vehicle as claimed in claim 2 wherein: the pipe wall of the middle outer shell (22) and the pipe wall of the inner core outer pipe (11) are sealed through O-shaped sealing rings (226), and an annular sealing groove II (223) used for mounting the O-shaped sealing rings (226) is formed in the inner wall of the middle outer shell (22).

5. A jacketed swivel joint for a fluid medium handling vehicle as claimed in claim 1 wherein: the inner wall of the upper shell cylinder (21) is provided with a step structure for mounting a positioning bearing.

6. A jacketed swivel joint for a fluid medium handling vehicle according to claim 5 wherein: the step structure comprises a first step and a second step, the first step is located on one side, close to the outer end, of the second step, a conical bearing (24) is installed in the first step, a planar bearing (25) is installed in the second step, and a bearing retainer ring (26) is arranged between the conical bearing (24) and the planar bearing (25).

7. A jacketed swivel joint for a fluid medium handling vehicle as claimed in claim 6 wherein: the outer side of the conical bearing (24) is fixed through a positioning sleeve (3).

8. A jacketed swivel joint for a fluid medium handling vehicle as claimed in claim 1 wherein: the spiral inner core cylinder is characterized in that flower-shaped gaskets (4) are arranged between the end flange I (15) of the spiral inner core cylinder (1) and the end flange II (27) of the spiral outer shell cylinder (2) and the mating flange (5) respectively, holes for passing a heating medium are formed in positions, corresponding to the steam inlet (100) or the steam outlet (200), of the flower-shaped gaskets (4), and the holes are distributed annularly.

9. A jacketed swivel joint for a fluid medium handling vehicle as claimed in claim 1 wherein: the upper outer shell cylinder (21), the middle outer shell cylinder (22) and the lower outer shell cylinder (23) are integrally welded.

10. A jacketed swivel joint for a fluid medium handling vehicle according to claim 7 wherein: the positioning sleeve (3) and the inner rotary core cylinder (1) are sealed through an O-shaped sealing ring (226).

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