阅读说明：本技术 液力管道连接件、液力管道 (Hydraulic pipeline connecting piece and hydraulic pipeline ) 是由 姜增光 王元元 李绍篷 刘志振 王丙燕 刘永明 于 2020-11-28 设计创作，主要内容包括：一种液力管道连接件,抗震式液力管道领域。它包括顺次连接的至少两组万向管接头单元,万向管接头单元包括球阀芯和球阀芯抱壳,球阀芯抱壳具有活动口和液流口,球阀芯内设有用于与液流口连通的液体流道,球阀芯与球阀芯抱壳球面低副密封连接。一种液力管道,包括液体来向侧管道、液体去向侧管道和前述的液力管道连接件,液力管道连接件的其中一端与液体来向侧管道密封连通,其另一端与液体去向侧管道密封连通。它为类软管结构,能够降低振动传递效率,但其构成零件均为硬质材料,耐压强度高,从而具有较长的使用寿命。(A hydraulic pipeline connecting piece belongs to the field of anti-seismic hydraulic pipelines. The universal pipe joint unit comprises at least two groups of universal pipe joint units which are connected in sequence, each universal pipe joint unit comprises a ball valve core and a ball valve core holding shell, each ball valve core holding shell is provided with a movable opening and a liquid flow opening, a liquid flow passage communicated with the liquid flow openings is formed in each ball valve core, and each ball valve core holding shell are connected in a spherical surface low-pair sealing mode. A hydraulic pipeline comprises a liquid supply side pipeline, a liquid discharge side pipeline and the hydraulic pipeline connecting piece, wherein one end of the hydraulic pipeline connecting piece is in sealed communication with the liquid supply side pipeline, and the other end of the hydraulic pipeline connecting piece is in sealed communication with the liquid discharge side pipeline. The vibration transmission efficiency can be reduced due to the hose-like structure, but the components are all made of hard materials, and the pressure resistance strength is high, so that the service life is long.)

1. The hydraulic pipeline connecting piece comprises at least two groups of universal pipe joint units which are connected in sequence, and is characterized in that the universal pipe joint units comprise a ball valve core and a ball valve core holding shell, the ball valve core holding shell is provided with a movable port and a liquid flow port, a liquid flow channel communicated with the liquid flow port is arranged in the ball valve core, and the ball valve core holding shell are connected in a spherical surface low-pair sealing mode.

2. The hydraulic conduit coupling of claim 1, wherein said ball spool further comprises a first conduit connection portion disposed on a side of said ball spool housing port; or, the ball valve core is fixedly connected with a first extension pipe, a pipe cavity of the first extension pipe is communicated with the liquid flow passage pipeline, and the first extension pipe is arranged on one side of a movable opening of the ball valve core holding shell.

3. The hydraulic conduit coupling of claim 1, wherein the ball spool capture shell further comprises a second conduit connection disposed on a side of the flow port of the ball spool capture shell; or the ball valve core holding shell is fixedly connected with a second extension pipe, and a pipe cavity of the second extension pipe is communicated with the liquid flow port pipeline.

4. The hydraulic conduit coupling of claim 1, wherein the universal joint unit further comprises an annular dynamic seal disposed between the ball valve spool and the ball valve spool capture.

5. The hydraulic pipeline connector as recited in claim 1, wherein the ball valve element holding shell comprises a variable diameter type pipe shell and a positioning plug, the variable diameter type pipe shell is provided with a first spherical inner wall surface for being in dynamic sealing connection with the outer surface of the ball valve element, the hydraulic port is arranged on the variable diameter type pipe shell, the positioning plug is provided with a second spherical inner wall surface for being in dynamic sealing connection with the outer surface of the ball valve element, the movable port is arranged on the positioning plug, and the positioning plug is detachably connected with the variable diameter type pipe shell.

6. The hydraulic conduit coupling of claim 1, wherein the ball valve core of one of the adjacent sets of universal joint units is in fluid communication with the fluid flow conduit of the ball valve core of the other set of universal joint units.

7. A hydraulic conduit comprising a fluid supply side conduit, a fluid removal side conduit and a hydraulic conduit coupling as recited in any one of claims 1-6, wherein one end of said hydraulic conduit coupling is in sealed communication with said fluid supply side conduit and the other end of said hydraulic conduit coupling is in sealed communication with said fluid removal side conduit.

8. The hydraulic conduit according to claim 7, wherein the fluid supply side conduit is fixedly connected to the ball valve core at the end of the hydraulic conduit connector, and the fluid supply side conduit has a lumen in communication with the fluid flow conduit at the end of the hydraulic conduit connector, the fluid supply side conduit is fixedly connected to the ball valve core-embracing housing at the other end of the hydraulic conduit connector, and the fluid supply side conduit is in communication with the fluid flow conduit of the ball valve core-embracing housing at the other end of the hydraulic conduit connector.

Technical Field

The invention relates to the technical field of anti-seismic hydraulic pipelines, in particular to a hydraulic pipeline connecting piece and a hydraulic pipeline.

Background

The fluid in the hydraulic line is at a higher pressure than in conventional fluid delivery lines to provide the hydraulic pressure required by the actuator, and thus the hydraulic line connection is more prone to leakage. Generally, mechanical equipment is vibrated during operation, and the vibration of a hydraulic pipeline can destroy the sealing effect and the connection strength of the connection part of the hydraulic pipeline, so that the hydraulic pipeline with the anti-vibration effect is shorter in service life and lower in maintenance cost.

Patent document CN107806329A discloses an ultrahigh pressure vibration damping fracturing universal manifold joint, which comprises a housing, a compression spring, a left convex cone plug, a right convex cone plug, a left concave-convex pipe joint and a right concave-convex pipe joint, wherein the left concave-convex pipe joint is installed on one side in the housing through the left convex cone plug, the right concave-convex pipe joint is installed on the other side in the housing through the right convex cone plug, the compression spring is arranged between the left convex cone plug and the right convex cone plug, and one ends of the left concave-convex pipe joint and the right concave-convex pipe joint extend to the outer end of the housing respectively. This technical scheme can eliminate pipeline axial vibrations, but when involving pipeline axial vibrations, when the protruding coupling top pushed compression spring, clearance can appear between protruding coupling and the casing. Because the adjustable gap exists between the convex cone plugs between the two convex pipe joints, high-pressure liquid in the convex pipe joints can overflow through the gap between the convex cone plugs and the gap between the convex pipe joints and the shell, and hydraulic pressure drop in the hydraulic pipeline is caused.

Disclosure of Invention

The first purpose of the invention is to provide a hydraulic pipeline connecting piece, so as to improve the sealing effect of the anti-seismic hydraulic pipeline connecting piece.

A second object of the present invention is to provide a hydraulic pipe using the hydraulic pipe connection.

The invention is realized by the following steps:

a hydraulic pipeline connecting piece comprises at least two groups of universal pipe joint units which are connected in sequence, wherein each universal pipe joint unit comprises a ball valve core and a ball valve core holding shell, each ball valve core holding shell is provided with a movable opening and a liquid flow opening, a liquid flow passage communicated with the liquid flow openings is formed in each ball valve core, and each ball valve core holding shell are connected in a spherical surface low-pair sealing mode.

Preferably, the ball valve core is further provided with a first pipeline connecting part, and the first pipeline connecting part is arranged on one side of the movable opening of the ball valve core holding shell; or, the ball valve core is fixedly connected with a first extension pipe, a pipe cavity of the first extension pipe is communicated with the liquid flow passage pipeline, and the first extension pipe is arranged on one side of a movable opening of the ball valve core holding shell.

Preferably, the ball valve core holding shell is further provided with a second pipeline connecting part, and the second pipeline connecting part is arranged on one side of the liquid flow port of the ball valve core holding shell; or the ball valve core holding shell is fixedly connected with a second extension pipe, and a pipe cavity of the second extension pipe is communicated with the liquid flow port pipeline.

Preferably, the universal pipe joint unit further comprises an annular dynamic sealing element, and the annular dynamic sealing element is arranged between the ball valve core and the ball valve core holding shell.

Preferably, the ball case embraces the shell and includes reducing tube and location end cap, the reducing tube is equipped with first sphere formula internal face, first sphere formula internal face be used for with the surface dynamic seal of ball case is connected, the rivers mouth sets up on the reducing tube, the location end cap is equipped with second sphere formula internal face, second sphere formula internal face be used for with the surface dynamic seal of ball case is connected, the activity mouth sets up on the location end cap, the location end cap with the connection can be dismantled to the reducing tube.

Preferably, in two adjacent groups of universal pipe joint units, the ball valve core holding shell of one group of universal pipe joint units is communicated with the liquid flow channel pipeline of the ball valve core of the other group of universal pipe joint units.

A hydraulic conduit comprising a fluid supply side conduit, a fluid removal side conduit and the hydraulic conduit coupler, said hydraulic conduit coupler having one end in sealing communication with said fluid supply side conduit and the other end in sealing communication with said fluid removal side conduit.

Preferably, the liquid incoming side pipeline is fixedly connected with the ball valve core at the end of the hydraulic pipeline connecting piece, the liquid pipe cavity of the liquid incoming side pipeline is communicated with the liquid flow channel pipeline at the end of the hydraulic pipeline connecting piece, the liquid outgoing side pipeline is fixedly connected with the ball valve core holding shell at the other end of the hydraulic pipeline connecting piece, and the liquid outgoing side pipeline is communicated with the liquid flow port pipeline of the ball valve core holding shell at the other end of the hydraulic pipeline connecting piece.

The beneficial effects of the invention include:

1. the universal pipe joint unit forms a movable connecting part of the two sections of pipelines, so that the two sections of pipelines can form a spherical low pair, and the rotation of three dimensions can be realized; the hydraulic pipeline connecting piece is formed by at least two groups of universal pipe joint units which are movably connected in sequence, and the length of the hydraulic pipeline connecting piece can be adjusted through the rotation of more than two groups of universal pipe joint units in different directions of three dimensions. The hydraulic pipeline connecting piece is of a hose-like structure, can reduce vibration transmission efficiency, but all the components are made of hard materials, and have high compressive strength and long service life.

2. The annular dynamic sealing element can improve the sealing effect of the ball valve core and the ball valve core holding shell under the condition that the relative movement of the ball valve core and the ball valve core holding shell is not influenced.

3. When the ball valve core holding shell comprises the reducing type pipe shell and the positioning plug, the hydraulic pipeline connecting piece is convenient to assemble.

Drawings

Fig. 1 is a schematic view of a hydraulic pipe coupling according to the present invention.

Fig. 2 is an exploded view of a universal pipe joint unit of a hydraulic pipe coupling of the present invention.

Fig. 3 is a schematic diagram of a hydraulic conduit according to the present invention.

Fig. 4 is a state diagram of the hydraulic line shown in fig. 3 in use.

Description of reference numerals: 1-hydraulic pipeline connecting piece, 101-first universal pipe joint unit, 102-second universal pipe joint unit, 103-third universal pipe joint unit, 104-fourth universal pipe joint unit, 110-ball valve core, 111-liquid flow channel, 112-first pipeline connecting part, 113-first extension pipe, 120-positioning plug, 121-second spherical inner wall surface, 122-movable port, 130-variable-diameter pipe shell, 131-first spherical inner wall surface, 132-liquid flow port, 133-positioning plug fixing part, 134-second pipeline connecting part and 135-second extension pipe.

Detailed Description

The present invention is described below in terms of embodiments in conjunction with the accompanying drawings to assist those skilled in the art in understanding and implementing the present invention. Unless otherwise indicated, the following embodiments and technical terms therein should not be understood to depart from the background of the technical knowledge in the technical field.

The hydraulic pipeline connecting piece comprises at least two groups of universal pipe joint units. Fig. 1 shows a hydraulic pipe connection having 4 sets of universal joint units, a first universal joint unit 101, a second universal joint unit 102, a third universal joint unit 103, and a fourth universal joint unit 104.

Referring to fig. 2, each universal joint unit includes a ball valve core 110 and a ball valve core holding shell, the ball valve core holding shell has a movable port 122 and a fluid port 132, and generally, the movable port 122 and the fluid port 132 are respectively disposed at two ends of a diametrical line of the ball valve core 110. The ball valve core 110 is internally provided with a liquid flow passage 111 which is communicated with the liquid flow port 132, and the ball valve core 110 is connected with the ball valve core surrounding shell spherical surface low pair in a sealing way.

In the hydraulic pipeline connecting piece, in two adjacent groups of universal pipe joint units, a liquid flow port of a ball valve core holding shell of one group of universal pipe joint units is communicated with a liquid flow channel pipeline of a ball valve core of the other group of universal pipe joint units; or the liquid flow port of the ball valve core holding shell of one group of universal pipe joint units is communicated with the liquid flow port pipeline of the ball valve core holding shell of the other group of universal pipe joint units, or the liquid flow channel of the ball valve core of one group of universal pipe joint units is communicated with the liquid flow channel pipeline of the ball valve core of the other group of universal pipe joint units. Thus, the sequential connection of more than two sets of universal pipe joint units can be realized.

For example, in a hydraulic pipe connection unit shown in fig. 1, a fluid flow port of a ball valve core receiving case of a first universal joint unit 101 communicates with a fluid flow passage pipe of a ball valve core of a second universal joint unit 102, and a fluid pipe resistance in such a hydraulic pipe connection unit is easy to determine.

The hydraulic pipe coupling of the present invention will be described in detail with reference to a hydraulic pipe coupling shown in fig. 1-2.

Referring to fig. 1-2, a hydraulic pipe coupling includes 4 sets of universal joint units, namely, a first universal joint unit 101, a second universal joint unit 102, a third universal joint unit 103, and a fourth universal joint unit 104. Each set of universal joint units comprises a ball valve core 110 and a ball valve core holding shell.

Referring to fig. 2, the ball valve core holding shell includes a variable diameter type shell 130 and a positioning plug 120, the variable diameter type shell 130 is provided with a first spherical inner wall surface 131, the first spherical inner wall surface 131 is used for being in dynamic sealing connection with the outer surface of the ball valve core 110, a liquid flow port 132 is arranged on the variable diameter type shell 130, the positioning plug 120 is provided with a second spherical inner wall surface 121, the second spherical inner wall surface 121 is used for being in dynamic sealing connection with the outer surface of the ball valve core 110, the movable port 122 is arranged on the positioning plug 120, the positioning plug 120 and the variable diameter type shell 130 can be connected in a detachable mode through threaded connection, and non-detachable connection can also be achieved through bonding.

According to the requirement, the ball valve core holding shell is further provided with a second pipeline connecting part 134, and the second pipeline connecting part 134 is arranged on one side of the liquid flow opening 132 of the ball valve core holding shell. In particular to the present embodiment, the second pipe connection 134 is disposed on the variable diameter cartridge 130 and corresponds to the fluid port 132. The second extension pipe 135 is connected with the variable diameter housing 130 in a screw-sealing manner, and at this time, the second pipe connection 134 is a sealing type internal screw thread. In addition, the ball valve core holding shell can also be fixedly connected with a second extension pipe 135, and the cavity of the second extension pipe 135 is in pipeline communication with the liquid flow port 132. The ball valve core holding shell is fixedly connected with the second extension pipe 135 by welding or integrally forming.

Referring to fig. 2, a liquid flow passage 111 for communicating with a liquid flow port 132 is provided in the ball valve core 110, and the ball valve core 110 is connected with the ball valve core housing spherical surface lower pair in a sealing manner.

According to the requirement, the ball valve core 110 is further provided with a first pipeline connecting part 112, and the first pipeline connecting part 112 is arranged on one side of the movable opening 122 of the ball valve core holding shell. Specifically to the present embodiment, the first pipe connection portion 112 is provided on the ball valve core 110, and corresponds to the liquid flow passage 111. The first extension pipe 113 is in threaded sealing connection with the ball valve core 110, and at this time, the first pipe connecting portion 112 is a sealing internal thread. In addition, the ball valve core 110 may also be fixedly connected with a first extension pipe 113, a lumen of the first extension pipe 113 is in pipeline communication with the liquid flow passage 111, and the first extension pipe 113 is disposed at one side of the movable opening 122 of the ball valve core holding shell.

Referring to fig. 2, during assembly, the first extension pipe 113 and the ball valve core 110 are connected, and the second extension pipe 135 and the variable diameter case 130 are connected. Then, the movable opening 122 of the positioning plug 120 is sleeved on the first extension pipe 113, so that the spherical surface of the ball valve core 110 corresponds to the second spherical inner wall surface 121 of the positioning plug 120 and the first spherical inner wall surface 131 of the variable diameter type pipe shell 130 respectively, the positioning plug 120 and the variable diameter type pipe shell 130 are connected, and the ball valve core 110 and the ball valve core are connected in a low-pair mode in a manner of embracing the spherical surface of the shell. After the dynamic seal is formed on the connecting surface of the spherical valve core 110 and the ball valve core holding shell, the spherical valve core 110 and the ball valve core holding shell are in spherical lower pair sealing connection.

The universal joint unit further includes an annular dynamic seal (not shown) disposed between the ball valve core 110 and the ball valve core embracing case, as required. In the prior art, a lip-type sealing element belongs to an annular dynamic sealing element. Referring to fig. 2, the annular dynamic seal member is preferably disposed between the variable diameter housing 130 and the ball valve core 110, and the universal joint unit further includes a plurality of annular dynamic seal members having different radii, and centers of the plurality of annular dynamic seal members having different radii are disposed coaxially with an axis of the fluid passage of the ball valve core, so that a superior dynamic sealing effect can be obtained.

Referring to fig. 1, in any two adjacent sets of universal pipe joint units, the ball valve core holding shell of one set of universal pipe joint units is preferably communicated with the liquid flow channel pipeline of the ball valve core of the other set of universal pipe joint units. Taking fig. 1 as an example, the fluid flow passage of the ball valve element of the first universal pipe joint unit 101 is taken as the inlet of the hydraulic pipe connection element 1, and the fluid flow port of the reducing pipe housing of the fourth universal pipe joint unit 104 is taken as the outlet of the hydraulic pipe connection element 1, so that the fluid pipe resistance in the hydraulic pipe connection element is easy to determine, and is not hindered by the ball valve element when the fluid flows in the reverse direction.

A hydraulic pipeline comprises a liquid supply side pipeline, a liquid discharge side pipeline and the hydraulic pipeline connecting piece, wherein one end of the hydraulic pipeline connecting piece is in sealed communication with the liquid supply side pipeline, and the other end of the hydraulic pipeline connecting piece is in sealed communication with the liquid discharge side pipeline.

In one of the hydraulic pipelines shown in fig. 1-4, the liquid supply side pipeline 21 is fixedly connected to the ball valve core at the left end of the hydraulic pipeline connecting piece 1, the liquid supply side pipeline 21 has a pipe cavity communicated with the liquid flow passage pipeline at the left end of the hydraulic pipeline connecting piece 2, the liquid supply side pipeline 22 is fixedly connected to the ball valve core holding shell at the right end of the hydraulic pipeline connecting piece 1, and the liquid supply side pipeline 22 is communicated with the liquid flow port pipeline of the ball valve core holding shell at the other end of the hydraulic pipeline connecting piece 1.

Referring to fig. 3-4, the length of the hydraulic conduit coupling can be adjusted by rotating more than two sets of universal joint units in different directions in three dimensions, specifically by 5656132 =215, and the axis of the liquid supply side conduit 21 and the axis of the liquid removal side conduit 22 can be offset by a radius value of 3975. When assembled, the axis of the liquid supply side conduit 21 and the axis of the liquid supply side conduit 22 are arranged in line, and the distance between the ball valve cores at the two ends of the hydraulic conduit connection is set between 56132 and 56347, so that the hydraulic conduit connection can move within the design range and reduce vibration.

The invention is described in detail above with reference to the figures and examples. It should be understood that in practice it is not intended to be exhaustive of all possible embodiments, and the inventive concepts of the present invention are presented herein by way of illustration. Without departing from the inventive concept of the present invention and without any creative work, a person skilled in the art should, in all of the embodiments, make optional combinations of technical features and experimental changes of specific parameters, or make a routine replacement of the disclosed technical means by using the prior art in the technical field to form specific embodiments, which belong to the content implicitly disclosed by the present invention.