CN116717649B

CN116717649B - Pressure pipeline

Info

Publication number: CN116717649B
Application number: CN202311001268.2A
Authority: CN
Inventors: 周忠华; 兰勇; 蒋启明; 赖仕林; 毛晓曼; 范小红; 许青松; 阚毅; 蒲杨强; 周益帆; 索伟; 陆涛
Original assignee: Sichuan Jingzhun Inspection And Testing Group Co ltd; Sichuan Jingzhun Special Equipment Inspection Co ltd
Current assignee: Sichuan Jingzhun Inspection And Testing Group Co ltd; Sichuan Jingzhun Special Equipment Inspection Co ltd
Priority date: 2023-08-10
Filing date: 2023-08-10
Publication date: 2023-10-20
Anticipated expiration: 2043-08-10
Also published as: CN116717649A

Abstract

The application provides a pressure pipeline, which relates to the technical field of pipeline equipment, and comprises a pipe inlet, a pipe dividing and arranging device, a flow promoting mechanism and a diameter expanding mechanism, wherein the pipe inlet, the pipe dividing and arranging device are sequentially connected, and the flow promoting mechanism and the diameter expanding mechanism are arranged in the pipeline equipment, wherein the flow promoting mechanism comprises a flow guiding plate, a flow expanding mechanism and a flow guiding plate, a flow guiding plate and a flow expanding mechanism, wherein the flow guiding: the shunt tube group comprises a first shunt tube and a second shunt tube, the first shunt tube is coaxial with the inlet tube, and a plurality of second shunt tubes are distributed at intervals along the circumferential direction of the first shunt tube; the flow promoting mechanism is used for accelerating the flow rate of pressure medium in the shunt tube group; the expanding mechanism comprises a plurality of elastic covers which are distributed along the circumference of the inlet pipe, and the elastic covers are used for enlarging the inner space of the inlet pipe. The shunt tube group and the flow promoting mechanism jointly act to avoid leakage caused by damage of the shunt tube group due to overlarge pressure in the tube. Along with the rising of pressure in the inlet pipe, the elastic cover deforms to expand the inner space of the inlet pipe, so that the pressure in the inlet pipe is reduced, and leakage caused by damage of the inlet pipe due to overlarge pressure in the inlet pipe is avoided.

Description

Pressure pipeline

Technical Field

The application relates to the technical field of pipeline equipment, in particular to a pressure pipeline.

Background

Pressure pipes refer to all pipes which are subjected to internal or external pressure, whatever the medium in the pipe. Pressure lines are the part of the lines that are assembled assemblies of pipes, tubes, flanges, bolted connections, gaskets, valves, other components or pressurized parts and supports for transporting, distributing, mixing, separating, discharging, metering, controlling and stopping fluid flow.

In the boiler production or after the production is finished, the high-temperature and high-pressure medium in the pressure vessel is discharged from the pressure pipeline, and the existing pressure pipeline is easy to damage and leak due to the overlarge pressure in the pipeline, so that the existing pressure pipeline needs to be improved.

Disclosure of Invention

The application provides a pressure pipeline aiming at the situation, and aims to solve the technical problem that the existing pressure pipeline is easy to damage due to overlarge pressure in a pipeline when high-temperature and high-pressure medium in a pressure container is discharged from the pressure pipeline during boiler production or after production is finished.

In order to achieve the above purpose, the present application provides the following technical solutions:

the application provides a pressure pipeline, which comprises an inlet pipe, a shunt pipe group, an outlet pipe, a flow promoting mechanism and a diameter expanding mechanism, wherein the inlet pipe, the shunt pipe group and the outlet pipe are sequentially connected, and the pressure pipeline further comprises the flow promoting mechanism and the diameter expanding mechanism, wherein:

the shunt tube group comprises a first shunt tube and a plurality of second shunt tubes which are distributed at intervals along the circumferential direction of the first shunt tube, and the first shunt tube is coaxial with the inlet tube;

the flow promoting mechanism is used for accelerating the flow rate of pressure medium in the shunt tube group;

the expanding mechanism comprises a plurality of elastic covers distributed along the circumferential direction of the inlet pipe, and the elastic covers are used for enlarging the inner space of the inlet pipe.

In some embodiments of the application, the shunt tube set is sleeved with a support.

In some embodiments of the present application, the flow promoting mechanism includes a flow promoting blade in the inlet pipe, the flow promoting blade is indirectly connected to the first shunt pipe via a rotating shaft, and one end of the rotating shaft is connected to a driving motor.

In some embodiments of the application, a support plate is fixed in the first shunt tube through a support rod, and the flow-promoting fan blade is connected with the support plate through a rotating shaft.

In some embodiments of the application, the flow promoting mechanism further comprises:

the first connecting piece is fixed on the rotating shaft;

the second connecting piece is in sliding fit with the first connecting piece; a kind of electronic device with high-pressure air-conditioning system

A return spring for moving the second link toward the rotation shaft;

when the return spring is in a natural telescopic state, the distance between one end of the flow-promoting fan blade far away from the rotating shaft and the axis of the rotating shaft is smaller than the distance between the pipe wall of one side of the second shunt pipe close to the first shunt pipe and the axis of the first shunt pipe.

In some embodiments of the application, further comprising:

the fixed cylinder is fixed on the pipe wall of the inlet pipe, and the lower end of the fixed cylinder is closed; the fixed cylinder is internally provided with a baffle plate and a movable plug from top to bottom in sequence, the movable plug is in sliding fit with the fixed cylinder, and the upper surface area of the movable plug is smaller than the surface area of the elastic cover; the partition board and the movable plug divide the internal space of the fixed cylinder into a first cavity, a second cavity and a third cavity; the second cavity is communicated with the inner space of the inlet pipe through the first air passage; the third cavity is provided with an air hole which is communicated with the external space;

a spring for restricting upward movement of the movable plug;

the lower end of the connecting rod is fixed on the movable plug, and the upper end of the connecting rod is positioned outside the fixed cylinder;

the first contact block is fixed in the first cavity;

the second contact block is fixed on the connecting rod and positioned below the first contact block; a kind of electronic device with high-pressure air-conditioning system

The buffer plate is connected with the connecting rod and can be contacted with the outer wall of the elastic cover;

the first contact block and the second contact block are made of conductive materials, and are connected in series into a start-stop circuit of the driving motor.

In some embodiments of the application, the buffer plate is sleeved with a connecting rod, and the connecting rod is connected with a drop-proof nut in a threaded manner, wherein the drop-proof nut is used for preventing the buffer plate from being separated from the connecting rod.

In some embodiments of the application, the inlet pipe is circumferentially provided with a plurality of mounting holes for mounting the elastic cover, and the inner wall of each mounting hole is provided with a connecting groove; the expanding mechanism further includes:

the inner wall of the fixed ring is fixedly connected with the edge of the elastic cover; a kind of electronic device with high-pressure air-conditioning system

The limiting plate is sleeved on the vertical rod, one end of the vertical rod is connected with the outer wall of the inlet pipe, and the upper portion of the vertical rod is in threaded connection with a limiting nut used for pressing the limiting plate on the fixing ring.

In some embodiments of the application, further comprising:

the accommodating cavity is formed in the wall of the inlet pipe;

the outer wall of the rectangular block is longitudinally matched with the side wall of the accommodating cavity in a sliding sealing manner, and initially, the top of the rectangular block is contacted with the top wall of the accommodating cavity, and the bottom of the rectangular block is arranged at intervals with the bottom of the accommodating cavity; the inside of the rectangular block is hollow, and the side wall of the rectangular block is provided with a strip-shaped hole; the vertical rod penetrates through the top of the rectangular block in a sliding manner, the lower end of the vertical rod is provided with a connecting part, and the connecting part is in threaded connection with the bottom of the rectangular block;

the second air passage is formed in the wall of the air inlet pipe, one end of the second air passage is communicated with the second cavity, the other end of the second air passage is communicated with the strip-shaped hole in an aligned mode, and the length of the strip-shaped hole is larger than the diameter of the second air passage.

In some embodiments of the application, the bottom of the connecting slot is disposed obliquely; the bottom slope setting of retainer plate can laminate mutually with the bottom of spread groove.

The embodiment of the application has at least the following advantages or beneficial effects:

1. the shunt tube group achieves the purposes of dividing pressure and reducing the pressure of each shunt tube group by shunting the pressure medium in the inlet tube; the flow promoting mechanism reduces the pressure applied to the tube wall of the shunt tube set by accelerating the flow rate of pressure medium in the shunt tube set; the shunt tube group and the flow promoting mechanism jointly act to avoid leakage caused by damage of the shunt tube group due to overlarge pressure in the tube.

2. Along with the rising of pressure in the inlet pipe, the elastic cover deforms to expand the inner space of the inlet pipe, so that the pressure in the inlet pipe is reduced, and leakage caused by damage of the inlet pipe due to overlarge pressure in the inlet pipe is avoided.

Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a pressure line;

FIG. 2 is an enlarged view of a portion of the position A of FIG. 1;

FIG. 3 is a schematic view of the structure of the support;

FIG. 4 is an enlarged view of a portion of the B position of FIG. 1;

fig. 5 is a partial enlarged view of position C in fig. 4.

Icon:

1-a pipe inlet, 11-a mounting hole, 12-a connecting groove,

2-a pipe outlet is arranged,

31-first shunt tube, 32-second shunt tube,

4-support, 41-connection hole,

51-flow-promoting fan blade, 52-supporting rod, 53-supporting plate, 54-rotating shaft, 55-first connecting piece, 56-second connecting piece, 57-reset spring,

61-elastic cover, 62-fixing ring, 63-limiting plate, 641-vertical rod, 642-connecting part, 643-limiting nut,

71-a fixed cylinder, 711-a baffle, 712-a movable plug, 713-a first cavity, 714-a second cavity, 715-a third cavity, 716-a first air passage, 717-an air hole, 72-a spring, 73-a connecting rod, 74-a first contact block, 75-a second contact block, 76-a buffer plate, 761-a drop-proof nut,

81-accommodation chamber, 82-rectangular block, 821-bar hole, 83-second air passage.

Detailed Description

Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in numerous different ways without departing from the spirit or scope of the embodiments of the present application.

In the description of embodiments of the present application, it should be understood that the terms "longitudinal," "length," "upper," "lower," "top," "bottom," "inner," "outer," "circumferential," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of embodiments of the present application and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting embodiments of the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present application, the meaning of "plurality" is two or more, unless explicitly defined otherwise.

In the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and include, for example, either permanently connected, removably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to specific circumstances.

Embodiments of the present application will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1 to 5, the present embodiment provides a pressure pipeline, which mainly includes an inlet pipe 1, an outlet pipe 2, a split-flow pipe group, a support member 4, a flow promoting mechanism, an expanding mechanism and an opening and closing mechanism, wherein the inlet pipe 1, the split-flow pipe group and the outlet pipe 2 are sequentially connected.

The inlet pipe 1 is connected to a pressure vessel (not shown) for discharging high-temperature, high-pressure medium.

The shunt tube group comprises a first shunt tube 31 and a second shunt tube 32, the first shunt tube 31 is coaxial with the inlet tube 1, and a plurality of second shunt tubes 32 are distributed at intervals along the circumferential direction of the first shunt tube 31.

Referring to fig. 3 (the supporting member 4 is not shown in fig. 1), a connecting hole 41 is formed on the supporting member 4 and matches with the shunt tube group, the supporting member 4 is sleeved with the shunt tube group through the connecting hole 41, and the outer wall of the shunt tube group contacts with the inner wall of the connecting hole 41; through setting up of support piece 4, can play the supporting role to the outer wall of reposition of redundant personnel nest of tubes to strengthen the compressive capacity of reposition of redundant personnel nest of tubes, avoid the reposition of redundant personnel nest of tubes to damage and cause the leakage because of intraductal pressure is too big.

The flow promoting mechanism is used for accelerating the flow rate of pressure medium in the shunt tube group; the flow promoting mechanism comprises flow promoting fan blades 51, the flow promoting fan blades 51 are positioned in the inlet pipe 1 and are arranged on a rotating shaft 54, a support plate 53 is fixed in the first shunt pipe 31 through a support rod 52, the rotating shaft 54 is rotationally connected to the middle part of the support plate 53, and one end of the rotating shaft 54 is connected with a driving motor (not shown in the figure) through a transmission mechanism (not shown in the figure); the transmission mechanism may include, for example, a transmission shaft, one end of which passes through a gap between two adjacent second shunt tubes 32 and a wall of one side of the first shunt tube 31 in order to extend into the first shunt tube 31, and may be in transmission connection with the rotation shaft 54 through a bevel gear; the transmission shaft is in rotary sealing fit with the wall of one side of the first shunt 31.

The operating principle of the shunt tube group and the flow promoting mechanism is as follows: the shunt tube group achieves the purpose of dividing pressure and reducing the pressure in the shunt tube group by shunting the pressure medium in the inlet tube 1; the flow promoting mechanism reduces the pressure applied to the tube wall of the shunt tube set by accelerating the flow rate of pressure medium in the shunt tube set; the shunt tube group and the flow promoting mechanism jointly act to avoid leakage caused by damage of the shunt tube group due to overlarge pressure in the tube.

The flow promoting mechanism further comprises a first connecting piece 55, a second connecting piece 56 and a return spring 57; the first connecting piece 55 is vertically connected to the rotating shaft 54, the second connecting piece 56 is in sliding fit with the first connecting piece 55, one end of the flow-promoting fan blade 51 is fixed to the second connecting piece 56, and the return spring 57 is used for enabling the second connecting piece 56 to move towards the rotating shaft 54; after the driving motor is started, along with the high-speed rotation of the rotating shaft 54, the second connecting piece 56 and the flow-promoting fan blade 51 can be far away from the rotating shaft 54 under the action of centrifugal force, and at this time, the rotation track of the flow-promoting fan blade 51 can be intersected with the axis of the second shunt tube 32 so as to accelerate the flow speed of pressure medium in the second shunt tube 32; when the return spring 57 is in the natural telescopic state, the distance between the end of the flow-promoting fan blade 51 far from the rotating shaft 54 and the axis of the rotating shaft 54 is smaller than the distance between the pipe wall of the side of the second shunt pipe 32 close to the first shunt pipe 31 and the axis of the first shunt pipe 31, so that the flow-promoting fan blade 51 does not form a barrier to the flow of pressure medium entering the second shunt pipe 32.

It will be appreciated that although the flow-promoting fan 51 is still able to rotate at a slower speed under the drive of the pressure medium when the drive motor is not activated, the flow-promoting fan 51 is not easily stretched under the restoring force of the restoring spring 57 to such an extent that it impedes the flow of the pressure medium into the second shunt tube 32.

The outlet pipe 2 is connected to an external pipe (not shown).

The expanding mechanism is used for increasing the inner space of the inlet pipe 1; the expanding mechanism includes an elastic cover 61, a retainer ring 62, and a limiting plate 63.

The inlet pipe 1 is provided with a plurality of arrangement holes 11 along the circumferential direction, the elastic cover 61 is arranged in the arrangement holes 11, the inner wall of the arrangement holes 11 is provided with a connecting groove 12, and the bottom of the connecting groove 12 is obliquely arranged. The elastic covers 61 are in one-to-one correspondence with the placement holes 11, and the plurality of elastic covers 61 are distributed along the circumferential direction of the inlet pipe 1.

The inner wall of the fixed ring 62 is fixedly connected with the edge of the elastic cover 61, and the outer wall of the fixed ring 62 is in sealing contact with the side wall of the connecting groove 12; the bottom of the fixing ring 62 is inclined and can be fitted to the bottom of the connecting groove 12.

The limiting plate 63 is sleeved on the vertical rod 641, one end of the vertical rod 641 is connected with the outer wall of the pipe 1, threads are arranged on the upper portion of the vertical rod 641 to be connected with the limiting nut 643 in a threaded mode, the limiting nut 643 is used for pressing the limiting plate 63 on the fixing ring 62 so as to prevent the fixing ring 62 from being separated from the connecting groove 12, and therefore the fixing ring 62 and the elastic cover 61 are installed on the pipe 1.

The working principle of the expanding mechanism is as follows: as the pressure in the inlet pipe 1 increases, the elastic cover 61 deforms to expand the inner space of the inlet pipe 1, thereby reducing the pressure in the inlet pipe 1 to avoid leakage of the inlet pipe 1 due to damage caused by excessive pressure in the pipe.

Referring to fig. 4, the opening and closing mechanism is used for controlling the start and stop of the driving motor; the opening and closing mechanism includes a fixed cylinder 71, a spring 72, a link 73, a first contact block 74, a second contact block 75, and a damper plate 76.

The fixed cylinder 71 is fixed on the pipe wall of the inlet pipe 1, and the upper end of the fixed cylinder 71 is open and the lower end is closed; a baffle 711 and a movable plug 712 are sequentially arranged in the fixed cylinder 71 from top to bottom, the movable plug 712 is in sliding fit with the fixed cylinder 71, and the upper surface area of the movable plug 712 is smaller than the surface area of the elastic cover 61; the partition 711 and the movable plug 712 partition the inner space of the fixed cylinder 71 into a first cavity 713, a second cavity 714, and a third cavity 715; the second cavity 714 is communicated with the inner space of the inlet pipe 1 through a first air passage 716, and the first air passage 716 is arranged on the pipe wall of the inlet pipe 1; the third cavity 715 has air holes 717, and the air holes 717 communicate with the external space.

The spring 72 is disposed in the second cavity 714 or the third cavity 715, and the restoring force of the spring 72 is downward for restricting upward movement of the movable plug 712; when the spring 72 is arranged in the second cavity 714, the spring 72 is a compression spring, the upper end of the compression spring is connected with the partition 711, and the lower end of the compression spring is connected with the movable plug 712; when the spring 72 is disposed in the third cavity 715, the spring 72 is a tension spring, the upper end of which is connected to the movable plug 712, and the lower end of which is connected to the inner bottom of the fixed cylinder 71.

The lower end of the connecting rod 73 is fixed to the movable plug 712, and the upper end is located outside the fixed cylinder 71.

The first contact block 74 and the second contact block 75 are positioned in the first cavity 713, the first contact block 74 is fixed on the fixed cylinder 71, the second contact block 75 is fixed on the connecting rod 73, and the first contact block 74 is positioned above the second contact block 75; the first contact block 74 and the second contact block 75 are made of conductive materials, and are connected in series to a start-stop circuit (not shown) of the drive motor.

The buffer plate 76 can contact with the outer wall of the elastic cover 61, the buffer plate 76 is sleeved with the connecting rod 73, and the connecting rod 73 is in threaded connection with a drop-proof nut 761 for limiting the upward movement of the buffer plate 76 so as to prevent the buffer plate 76 from being separated from the connecting rod 73.

The working principle of the opening and closing mechanism is as follows: as shown in fig. 4, in the process that the elastic cover 61 expands and deforms due to the increase of the pressure in the inlet pipe 1, the buffer plate 76 can contact with the outer wall of the elastic cover 61 and move upwards along with the expansion of the elastic cover 61, so that the buffer plate 76 and the connecting rod 73 drive the second contact block 75 to move upwards to contact with the first contact block 74, and when the first contact block 74 and the second contact block 75 contact, the startup circuit forms a closed loop, so that the driving motor is started, and the rotating shaft 54 and the flow promoting fan blade 51 are driven by the driving motor to rotate quickly, so that the flow rate of pressure medium in the shunt pipe group is accelerated.

In addition, in the process that the elastic cover 61 expands and deforms due to the rise of the pressure in the inlet pipe 1, on one hand, as the buffer plate 76 is contacted with the outer wall of the elastic cover 61, the elastic cover 61 can enable the buffer plate 76 to drive the movable plug 712 to move upwards, so that the downward restoring force of the spring 72 plays a role in buffering the deformation of the elastic cover 61; on the other hand, since the pressure medium in the inlet pipe 1 can enter the second cavity 714 through the first air passage 716, and the upper surface area of the movable plug 712 is smaller than the surface area of the elastic cover 61, in the process that the buffer plate 76 drives the movable plug 712 to move upwards, the pressure medium in the second cavity 714 acts on the upper surface of the movable plug 712 to play a certain role in buffering the upward movement of the movable plug 712; it can be seen that the pressure medium in the spring 72 and the second cavity 714 can jointly act as a buffer for the deformation of the elastic cover 61, which is beneficial to enhancing the compression resistance of the elastic cover 61 and avoiding the rupture of the elastic cover 61 due to the over-high pressure.

It will be appreciated that the above-mentioned "the spring 72 and the pressure medium in the second cavity 714 together act as a buffer for the deformation of the elastic cover 61", and do not mean to prevent the deformation of the elastic cover 61.

Referring to fig. 4 and 5, the pressure pipe further includes a receiving chamber 81, a rectangular block 82, and a second air passage 83.

The accommodating chamber 81 is formed in the wall of the inlet pipe 1.

The cross section of the rectangular block 82 is rectangular, and the outer wall of the rectangular block 82 is longitudinally in sliding sealing fit with the side wall of the accommodating cavity 81; initially, the top of the rectangular block 82 is in contact with the top wall of the accommodating chamber 81, and the bottom is spaced from the bottom of the accommodating chamber 81; the rectangular block 82 is hollow, and the side wall of the rectangular block is provided with a strip-shaped hole 821; the vertical rod 641 is slidably inserted through the top of the rectangular block 82, and a connecting portion 642 is provided at the lower end of the vertical rod 641, and the connecting portion 642 is screwed with the bottom of the rectangular block 82.

The second air passage 83 is formed in the wall of the air inlet pipe 1, one end of the second air passage 83 is communicated with the second cavity 714 of the fixed cylinder 71, the other end of the second air passage 83 is communicated with the bar-shaped hole 821 in an aligned manner, and the length of the bar-shaped hole 821 (the dimension of the bar-shaped hole 821 in the up-down direction in the state shown in fig. 4) is larger than the diameter of the second air passage 83.

The rectangular block 82 works on the principle that: in combination with the foregoing, when the elastic cover 61 is mounted, after the fixing ring 62 is placed in the connecting groove 12, the vertical rod 641 is first inserted into the rectangular block 82 and rotated to enable the connecting portion 642 of the vertical rod 641 to be in threaded connection with the bottom of the rectangular block 82, then the limiting plate 63 is sleeved on the upper portion of the vertical rod 641, then the limiting nut 643 is screwed on the vertical rod 641, and the limiting plate 63 is pressed on the fixing ring 62 through the limiting nut 643 so as to prevent the fixing ring 62 from being separated from the connecting groove 12, thereby mounting the fixing ring 62 and the elastic cover 61 on the inlet pipe 1; since the pressure medium in the inlet pipe 1 can enter the rectangular block 82 through the second air passage 83 and the strip-shaped hole 821 after entering the second cavity 714, along with the increase of the pressure in the inlet pipe 1, the pressure in the rectangular block 82 also increases, and at this time, the rectangular block 82 has a tendency to drive the vertical rod 641 to move towards the bottom of the accommodating cavity 81, so that a downward acting force is applied to the limiting plate 63 by the limiting nut 643 on the vertical rod 641, which can better limit the movement of the fixing ring 62, and can increase the contact tightness between the bottom (inclined arrangement) of the fixing ring 62 and the bottom (inclined arrangement) of the connecting groove 12, thereby improving the tightness of the connection between the fixing ring 62 and the inlet pipe 1, that is, the tightness of the connection between the fixing ring 62 and the inlet pipe 1 can be enhanced along with the increase of the pressure in the inlet pipe 1.

In other embodiments, the outlet pipe 2 may be provided with a diameter expanding mechanism.

Finally, it should be noted that: the above is only a preferred embodiment of the present application, and it is not intended to limit the present application, and various modifications and variations of the present application may be possible to those skilled in the art, and the embodiments of the present application and features in the embodiments may be arbitrarily combined with each other without collision. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. The utility model provides a pipeline under pressure, its characterized in that, including the advance pipe, reposition of redundant personnel nest of tubes and exit tube that connect gradually, still include and promote flow mechanism and expanding mechanism, wherein:

the shunt tube group comprises a first shunt tube and a plurality of second shunt tubes which are circumferentially and alternately distributed along the first shunt tube, and the first shunt tube is coaxial with the inlet tube;

the expanding mechanism comprises a plurality of elastic covers distributed along the circumferential direction of the inlet pipe, and the elastic covers are used for increasing the inner space of the inlet pipe;

the flow promoting mechanism comprises flow promoting fan blades positioned in the inlet pipe, the flow promoting fan blades are indirectly connected with the first shunt pipe through a rotating shaft, and one end of the rotating shaft is in transmission connection with a driving motor;

the flow promoting mechanism further comprises:

the first connecting piece is fixed on the rotating shaft;

the second connecting piece is in sliding fit with the first connecting piece, and the flow-promoting fan blade is fixed on the second connecting piece; a kind of electronic device with high-pressure air-conditioning system

A return spring for moving the second link toward the rotation shaft;

when the return spring is in a natural telescopic state, the distance between one end of the flow-promoting fan blade far away from the rotating shaft and the axis of the rotating shaft is smaller than the distance between the pipe wall of one side of the second shunt pipe close to the first shunt pipe and the axis of the first shunt pipe;

further comprises:

the fixed cylinder is fixed on the pipe wall of the inlet pipe, and the lower end of the fixed cylinder is closed; the fixed cylinder is internally provided with a baffle plate and a movable plug from top to bottom in sequence, the movable plug is in sliding fit with the fixed cylinder, and the surface area of the upper side of the movable plug is smaller than that of the elastic cover; the partition plate and the movable plug divide the internal space of the fixed cylinder into a first cavity, a second cavity and a third cavity; the second cavity is communicated with the inner space of the inlet pipe through a first air passage; the third cavity is provided with an air hole, and the air hole is communicated with the external space;

a spring for restricting upward movement of the movable plug;

the first contact block is fixed in the first cavity;

the second contact block is fixed on the connecting rod and is positioned below the first contact block; a kind of electronic device with high-pressure air-conditioning system

2. The pressure conduit of claim 1 wherein the shunt tube set is sleeved with a support.

3. The pressure conduit of claim 1, wherein a support plate is secured within the first shunt tube by a strut, and wherein the flow-promoting fan blade is coupled to the support plate by the shaft.

4. The pressure pipeline according to claim 1, wherein the buffer plate is sleeved with the connecting rod, and an anti-drop nut for preventing the buffer plate from being separated from the connecting rod is connected to the connecting rod through threads.

5. A pressure pipe according to claim 1, wherein,

the inlet pipe is circumferentially provided with a plurality of arrangement holes for installing the elastic cover, and the inner wall of each arrangement hole is provided with a connecting groove; the expanding mechanism further includes:

6. The pressure pipe of claim 5, wherein the bottom of the connection groove is disposed obliquely; the bottom of retainer plate slope setting and can with the bottom of spread groove is laminated mutually.