阅读说明：本技术 管道的流速调节装置及输送管道 (Flow velocity adjusting device of pipeline and conveying pipeline ) 是由 曾庆威 李相远 李海 马平安 于 2020-05-29 设计创作，主要内容包括：本公开提供了一种管道的流速调节装置及输送管道,属于工业管路控制技术领域。包括固定件和至少一个流速调节组件,固定件和至少一个流速调节组件,流速调节组件包括第一挡板、第二挡板和双金属片,第一挡板上具有多个第一通孔,第二挡板上具有多个第二通孔,双金属片具有相反的第一端和第二端,第一端与第一挡板固定连接,第二端与第二挡板固定连接,第一挡板和第二挡板平行,固定件用于连接至管道的内壁,固定件与第一挡板和第二挡板中的一个连接。该流速调节装置能够根据管道内介质的温度变化实现对管道中介质的流速的自动调节,保证介质的流速稳定性。(The utility model provides a velocity of flow adjusting device and pipeline of pipeline belongs to industrial pipeline control technical field. The flow velocity adjusting assembly comprises a first baffle plate, a second baffle plate and a bimetallic strip, a plurality of first through holes are formed in the first baffle plate, a plurality of second through holes are formed in the second baffle plate, the bimetallic strip is provided with a first end and a second end which are opposite, the first end is fixedly connected with the first baffle plate, the second end is fixedly connected with the second baffle plate, the first baffle plate and the second baffle plate are parallel, the fixing member is used for being connected to the inner wall of a pipeline, and the fixing member is connected with one of the first baffle plate and the second baffle plate. The flow velocity adjusting device can automatically adjust the flow velocity of the medium in the pipeline according to the temperature change of the medium in the pipeline, and the flow velocity stability of the medium is ensured.)

1. A flow rate regulating device for a pipe, comprising: a fixed part (1) and at least one flow rate regulating component (2),

the flow velocity adjusting assembly (2) comprises a first baffle plate (21), a second baffle plate (22) and a bimetallic strip (23), wherein the first baffle plate (21) is provided with a plurality of first through holes (211), the second baffle plate (22) is provided with a plurality of second through holes (221), the bimetallic strip (23) is provided with a first end (231) and a second end (232) which are opposite, the first end (231) is fixedly connected with the first baffle plate (21), the second end (232) is fixedly connected with the second baffle plate (22), and the first baffle plate (21) and the second baffle plate (22) are parallel,

the fixing piece (1) is used for being connected to the inner wall of a pipeline (n), and the fixing piece (1) is connected with one of the first baffle plate (21) and the second baffle plate (22).

2. The flow-rate regulating device according to claim 1, wherein the first baffle (21) and the second baffle (22) are circular, the plurality of first through holes (211) being circumferentially distributed on the first baffle (21), the second through holes (221) being circumferentially distributed on the second baffle (22).

3. The flow-rate regulating device according to claim 2, characterized in that said plurality of first through holes (211) are distributed on said first baffle (21) at equal angular intervals and said plurality of second through holes (221) are distributed on said second baffle (22) at equal angular intervals.

4. The flow-rate regulating device according to claim 1, characterized in that the flow-rate regulating assembly (2) comprises a plurality of bimetallic strips (23), said plurality of bimetallic strips (23) being arranged at intervals between said first shutter (21) and said second shutter (22).

5. The flow-rate regulating device according to claim 1, characterized in that it comprises a plurality of said flow-rate regulating assemblies (2), said first baffles (21) of said flow-rate regulating assemblies (2) being coplanar and connected, and said second baffles (22) of said flow-rate regulating assemblies (2) being coplanar and connected.

6. The flow-rate regulation device according to claim 5, wherein the edge of the first shutter (21) has a first plug (21a) and a first receptacle (21b), the first shutters (21) of the plurality of flow-rate regulation assemblies (2) being detachably connected by the first plug (21a) and the first receptacle (21b),

the edge of the second shutter (22) has a second plug (22a) and a second receptacle (22b), and the second shutters (22) of the plurality of flow rate adjustment assemblies (2) are detachably connected by the second plug (22a) and the second receptacle (22 b).

7. The flow rate regulating device according to any one of claims 1 to 6, wherein the fixing member (1) comprises a positioning ring (11), the positioning ring (11) having a mounting groove (111) on an inner wall thereof, the first baffle plate (21) or the second baffle plate (22) being mounted in the mounting groove (111).

8. The flow rate regulating device according to claim 7, wherein said fixing member (1) further comprises a support rod (14), said support rod (14) being arranged in a diameter direction of said positioning ring (11) and both ends of said support rod (14) being connected to said positioning ring (11).

9. The flow-rate regulating device according to any one of claims 1 to 6, characterized in that the first baffle plate (21) and the second baffle plate (22) are metal baffle plates.

10. A conveying pipe, characterized in that it comprises a pipe (n) and at least one flow-rate regulating device according to any one of claims 1 to 9, which is mounted inside said pipe (n).

Technical Field

The disclosure relates to the technical field of industrial pipeline control, in particular to a flow velocity adjusting device of a pipeline and a conveying pipeline.

Background

When a pipeline is used for conveying media such as oil and the like, the flow velocity of the media in the pipeline is generally required to be controlled, pipeline vibration and abnormal sound caused by overlarge and unstable flow velocity are avoided, the flow velocity of the media in the pipeline is kept stable, and the resistance of the media is required to be constant. However, various devices in the pipeline transportation system generate heat during operation, so that the temperature of the medium is increased, and the viscosity of the medium is reduced due to the increase of the temperature of the medium, so that the flow rate is increased.

In the related art, a regulating valve is usually disposed on a pipeline, and the flow rate of a medium in the pipeline is regulated and controlled by controlling the opening degree of the regulating valve.

The governing valve often needs the staff manual regulation, because the staff exists when adjusting and leads to the possibility that the pipeline is shut off completely because of the maloperation, and some media require the pipeline can not shut off completely in the transportation, consequently not only complex operation, have the trouble risk moreover.

Disclosure of Invention

The embodiment of the disclosure provides a flow velocity adjusting device of a pipeline and a conveying pipeline, which can realize automatic adjustment of the flow velocity of a medium in the pipeline and ensure the stability of the flow velocity of the medium. The technical scheme is as follows:

in a first aspect, an embodiment of the present disclosure provides a flow rate adjusting device for a pipeline, including: a fixing member and at least one flow rate adjusting assembly,

the flow velocity adjusting assembly comprises a first baffle plate, a second baffle plate and a bimetallic strip, wherein the first baffle plate is provided with a plurality of first through holes, the second baffle plate is provided with a plurality of second through holes, the bimetallic strip is provided with a first end and a second end which are opposite, the first end is fixedly connected with the first baffle plate, the second end is fixedly connected with the second baffle plate, and the first baffle plate is parallel to the second baffle plate,

the fixing member is used for being connected to the inner wall of the pipeline, and the fixing member is connected with one of the first baffle plate and the second baffle plate.

Optionally, the first baffle and the second baffle are circular, the plurality of first through holes are circumferentially distributed on the first baffle, and the second through holes are circumferentially distributed on the second baffle.

Optionally, the first through holes are distributed on the first baffle at equal angular intervals, and the second through holes are distributed on the second baffle at equal angular intervals.

Optionally, the flow rate adjustment assembly includes a plurality of bimetal strips arranged at intervals between the first baffle and the second baffle.

Optionally, the flow-rate adjusting device comprises a plurality of flow-rate adjusting assemblies, the first baffles of the plurality of flow-rate adjusting assemblies are coplanar and connected, and the second baffles of the plurality of flow-rate adjusting assemblies are coplanar and connected.

Optionally, the edge of the first baffle has a first plug and a first socket, the first baffles of the plurality of flow-rate regulating assemblies are detachably connected by the first plug and the first socket,

the edge of the second baffle plate is provided with a second plug and a second jack, and the second baffle plates of the flow rate adjusting assemblies are detachably connected through the second plug and the second jack.

Optionally, the fixing member includes a positioning ring, the positioning ring has a mounting groove on an inner wall thereof, and the first baffle or the second baffle is mounted in the mounting groove.

Optionally, the fixing member further comprises at least one support rod, the at least one support rod is arranged along the diameter direction of the positioning ring, and two ends of the support rod are connected with the positioning ring

Optionally, the first baffle and the second baffle are metal baffles.

In a second aspect, embodiments of the present disclosure also provide a conveying pipeline, including a pipeline and at least one flow rate adjusting device as described in the first aspect, where the at least one flow rate adjusting device is installed in the pipeline.

The beneficial effects brought by the technical scheme provided by the embodiment of the disclosure at least comprise:

the flow velocity adjusting assembly is connected to the inner wall of the pipeline through a fixing piece, one of the first baffle plate and the second baffle plate is connected with the fixing piece, the first baffle plate and the second baffle plate are connected through the bimetallic strip, the first baffle plate is provided with a plurality of first through holes, and the second baffle plate is provided with a plurality of second through holes. When the oil liquid and other media in the pipeline are in a normal temperature state, the media can directly pass through the first baffle and the second baffle through the plurality of first through holes and the plurality of second through holes; when the temperature of the medium in the pipeline rises, the bimetallic strip is heated to be bent and deformed, the relative positions of the first baffle and the second baffle deviate, the area of the first through hole opposite to the second through hole is changed, the total resistance of the first baffle and the second baffle to the medium is changed, the flow path of the medium in the pipeline is changed, the resistance of the medium rises, the flow speed is reduced, and the phenomenon that the flow speed of the medium is too high due to the rise of the temperature of the medium is avoided. The flow velocity adjusting device of the pipeline can automatically adjust the flow velocity of the medium in the pipeline according to the temperature change of the medium in the pipeline, and the stability of the flow velocity of the medium is ensured.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a flow rate adjusting device of a pipeline in a normal temperature state according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a bimetal provided by an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a flow rate regulating device of a pipeline in a high temperature state according to an embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of a plurality of flow rate adjustment assemblies provided in an embodiment of the present disclosure at a normal temperature;

FIG. 5 is a schematic structural view of a plurality of flow-rate regulating assemblies provided by the disclosed embodiments in a high-temperature state;

FIG. 6 is a schematic structural diagram of a fixing element according to an embodiment of the disclosure;

fig. 7 is a schematic structural diagram of a fixing member connected to a second baffle according to an embodiment of the disclosure;

fig. 8 is a schematic structural diagram of another fixing element connected to the second baffle according to an embodiment of the disclosure.

Detailed Description

To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

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 "first," "second," and similar terms in the description and claims of the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, which may also change accordingly when the absolute position of the object being described changes.

When media such as oil are conveyed through the pipeline, if the oil in the pipeline is always at a constant environmental temperature, the viscosity of the oil is kept constant, and the resistance of the oil is constant. Along with the increase of the operating time of relevant equipment in the pipeline transportation system, the temperature of mechanical equipment can rise for the temperature of the fluid of carrying in the pipeline rises, and fluid temperature rises and can make the viscosity descend, and the resistance that fluid received will diminish, leads to the velocity of flow of fluid to accelerate, arouses pipeline vibration and abnormal sound.

In the related art, a regulating valve is usually disposed on a pipeline, and the flow rate of a medium such as oil flowing through the pipeline is regulated by controlling the opening degree of the regulating valve.

The governing valve often needs the staff manual regulation, because the staff exists when adjusting and leads to the possibility that the pipeline is shut off completely because of the maloperation, and some media require the pipeline can not shut off completely in the transportation, consequently not only complex operation, have the trouble risk moreover.

Fig. 1 is a schematic structural diagram of a flow rate adjusting device of a pipeline in a normal temperature state according to an embodiment of the present disclosure. As shown in fig. 1, the flow rate regulating device of the pipe includes a fixing member 1 and at least one flow rate regulating assembly 2.

The flow rate adjusting assembly 2 comprises a first baffle plate 21, a second baffle plate 22 and a bimetallic strip 23, wherein the first baffle plate 21 is provided with a plurality of first through holes 211, the second baffle plate 22 is provided with a plurality of second through holes 221, the bimetallic strip 23 is provided with a first end 231 and a second end 232 (see fig. 2) which are opposite, the first end 231 is fixedly connected with the first baffle plate 21, the second end 232 is fixedly connected with the second baffle plate 22, and the first baffle plate 21 and the second baffle plate 22 are parallel. The fixing member 1 is for being attached to an inner wall of the pipe n, and the fixing member 1 is attached to one of the first barrier 21 and the second barrier 22. The present disclosure is exemplified by taking the fixing member 1 and the second shutter 22 as an example.

In the embodiment of the present disclosure, when the temperature of the oil in the pipeline n is at a stable ambient temperature, the bimetal 23 is in a flat state, and the facing area of the first through hole 211 on the first baffle 21 and the second through hole 221 on the second baffle 22 reaches a maximum value. Most of the oil can pass through the second through holes 221 of the second baffle 22 in the original flow direction after passing through the plurality of first through holes 211 of the first baffle 21, and the resistance of the flow velocity modulation assembly 2 to the oil is minimal.

Fig. 2 is a schematic structural diagram of a bimetal provided in an embodiment of the present disclosure. As shown in fig. 2, the bimetal 23 exemplarily includes a first metal layer 23a and a second metal layer 23b stacked together, wherein the thermal expansion coefficient of the first metal layer 23a is greater than that of the second metal layer 23b, and the bimetal 23 is also called a thermal bimetal, and due to the different thermal expansion coefficients of the constituent layers, when the temperature changes, the deformation of the first metal layer 23a is greater than that of the second metal layer 23b, so that the whole bimetal bends toward the second metal layer 23b, and the curvature of the composite material changes, thereby generating deformation. Among them, the layer with a higher expansion coefficient is called an active layer, and the layer with a lower expansion coefficient is called a passive layer.

Fig. 3 is a schematic structural diagram of a flow rate regulating device of a pipeline in a high-temperature state according to an embodiment of the present disclosure. As shown in fig. 1 to 3, in the embodiment of the present disclosure, the bimetal strip 23 has a strip shape, a first end 231 and a second end 232 of the strip shape are fixedly connected to the first baffle 21 and the second baffle 22 in the length direction, and since the expansion coefficient of the first metal layer 231 is greater than that of the second metal layer 232, that is, the first metal layer 231 is an active layer, and the second metal layer 232 is a passive layer. As the operation time of the mechanical device increases, the temperature of the mechanical device increases, and at this time, the temperature of the oil conveyed in the pipe also increases, and when the bimetal strip 23 is heated, the bimetal strip 23 is bent and deformed integrally to one side of the second metal layer 232. Because the second baffle 22 passes through mounting 1 and pipeline n's inner wall fixed connection, first baffle 21 can follow the bending of bimetallic strip 23 and take place the displacement relatively second baffle 22 for the just right area of first through-hole 211 on the first baffle 21 and the second through-hole 221 on the second baffle 22 reduces, can follow the total amount of former flow direction and continue the fluid through the second through-hole 221 on the second baffle 22 behind a plurality of first through-holes 211 on the first baffle 21, the resistance that velocity of flow regulating assembly 2 produced fluid increases, thereby the velocity of flow of fluid has been reduced, the problem of the velocity of flow that becomes fast because the viscosity diminishes after the temperature rise has been solved because fluid.

The flow velocity adjusting assembly is connected to the inner wall of the pipeline through a fixing piece, one of the first baffle plate and the second baffle plate is connected with the fixing piece, the first baffle plate and the second baffle plate are connected through the bimetallic strip, the first baffle plate is provided with a plurality of first through holes, and the second baffle plate is provided with a plurality of second through holes. When the oil liquid and other media in the pipeline are in a normal temperature state, the media can directly pass through the first baffle and the second baffle through the plurality of first through holes and the plurality of second through holes; when the temperature of the medium in the pipeline rises, the bimetallic strip is heated to be bent and deformed, the relative positions of the first baffle and the second baffle deviate, the area of the first through hole opposite to the second through hole is changed, the total resistance of the first baffle and the second baffle to the medium is changed, the flow path of the medium in the pipeline is changed, the resistance of the medium rises, the flow speed is reduced, and the phenomenon that the flow speed of the medium is too high due to the rise of the temperature of the medium is avoided. The flow velocity adjusting device of the pipeline can automatically adjust the flow velocity of the medium in the pipeline according to the temperature change of the medium in the pipeline, and the stability of the flow velocity of the medium is ensured.

Illustratively, when the bimetal strip 23 is not bent and deformed, the plurality of first through holes 211 on the first baffle 21 and the plurality of second through holes 221 on the second baffle 22 correspond one to one, and the corresponding first through holes 211 and second through holes 221 are coaxially arranged. When the medium such as oil and the like in the pipeline is in a normal temperature state, the oil passing through the first baffle 21 and the second baffle 22 flows smoothly, and the flow speed is constant.

In the embodiment of the present disclosure, the plurality of first through holes 211 on the first baffle plate 21 and the plurality of second through holes 221 on the second baffle plate 22 are all circular through holes. In other possible implementations, the first through hole 211 and the second through hole 221 may also be rectangular holes or through holes with other shapes.

The number and the aperture of the first through holes 211 and the second through holes 221 may be determined according to the magnitude of the flow rate and the flow velocity of the medium actually required by the user,

alternatively, the first baffle 21 and the second baffle 22 are circular, the plurality of first through holes 211 are circumferentially distributed on the first baffle 21, and the plurality of second through holes 221 are circumferentially distributed on the second baffle 22. Since the pipes for transporting the oil and other media are generally round pipes, the first baffle plate 21 and the second baffle plate 22 are both adaptively set to be round, and the oil and other media in the pipe n can uniformly pass through the first baffle plate 21 and the second baffle plate 22 by circumferentially arranging the plurality of first through holes 211 on the first baffle plate 21 and the plurality of second through holes 221 on the second baffle plate 22, so that the flow speed stability of the media is improved.

Alternatively, the plurality of first through holes 211 are distributed on the first barrier 21 at equal angular intervals, and the plurality of second through holes 221 are distributed on the second barrier 22 at equal angular intervals. Exemplarily, in the embodiment of the present disclosure, the first baffle 21 has 6 first through holes 211, and each first through hole 211 is circumferentially distributed on the first baffle 21 at equal angles of 60 ° apart; the second baffle 22 is provided with 6 second through holes 221 which correspond to the first through holes 211 one by one, and each second through hole 221 is circumferentially distributed on the second baffle 22 at equal angles of 60 degrees. Through arranging first through-hole 211 and second through-hole 221 on first baffle 21 and second baffle 22 with the equal angle circumference respectively, make first through-hole 211 more even in the distribution of first baffle 21, second through-hole 221 on second baffle 22, avoid medium such as the fluid through first baffle 21 and second baffle 22 to appear the turbulent flow and lead to the velocity of flow to change, further improved the velocity of flow stability of medium.

Alternatively, the flow rate adjusting assembly 2 includes a plurality of bimetal pieces 23, and the plurality of bimetal pieces 23 are arranged at intervals between the first shutter 21 and the second shutter 22. If the first barrier 21 and the second barrier 22 are large in size and only one bimetal 23 is used to connect the first barrier 21 and the second barrier 22, since only the second barrier 22 is fixedly connected to the inner wall of the pipe n by the fixing member 1, the bimetal 23 may be bent due to the excessive weight of the first barrier 21, resulting in the deviation of the first barrier 21 and the second barrier 22. In this embodiment, through arranging a plurality of bimetallic strips 23 between first baffle 21 and second baffle 22, use a plurality of bimetallic strips 23 to connect first baffle 21 and second baffle 22 simultaneously, improved the support intensity to the second baffle 22 that is located pipeline n middle part, avoid bimetallic strip 23 to take place the displacement in advance, further improved the velocity of flow stability of medium.

In addition, since the bimetal 23 is bent and deformed from the first metal layer 23a as an active layer to the second metal layer 23b as a passive layer when it is heated, the plurality of bimetal pieces 23 need to be arranged in parallel to each other in order to allow the second barrier 22 to be displaced to the same sight when the plurality of bimetal pieces 23 are connected.

Fig. 4 is a schematic structural diagram of a plurality of flow rate adjustment assemblies provided in an embodiment of the present disclosure at a normal temperature. Fig. 5 is a schematic structural diagram of a plurality of flow rate adjustment assemblies in a high temperature state according to an embodiment of the present disclosure. As shown in fig. 4 and 5, the flow rate regulating device includes a plurality of flow rate regulating assemblies 2, the first baffles 21 of the plurality of flow rate regulating assemblies 2 are arranged and connected in a coplanar manner, and the second baffles 22 of the plurality of flow rate regulating assemblies 2 are arranged and connected in a coplanar manner. When the inner diameter of the pipeline n is very large, the flow velocity of media such as oil and the like in the pipeline n cannot be adjusted by only one flow velocity adjusting assembly 2, and if the sizes of the first baffle 21 and the second baffle 22 are made to be very large, the application range is narrow, and the practicability is low. Illustratively, in the embodiment of the present disclosure, the connection of the plurality of flow rate adjustment assemblies 2 to each other two by two is achieved by arranging and connecting the plurality of first baffles 21 in the plurality of flow rate adjustment assemblies 2 in a coplanar manner and the plurality of second baffles 22 in the plurality of flow rate adjustment assemblies 2 in a coplanar manner. When the internal diameter of pipeline n is very big, can be through with a plurality of velocity of flow adjustment assembly 2 interconnect, increase the quantity of first baffle 21 and second baffle 22 in the coplanar, improve the coverage area of velocity of flow adjustment assembly 2 in pipeline n to the realization is adjusted the velocity of flow of media such as fluid in the great pipeline n of internal diameter, avoids the great first baffle 21 of independent design size and second baffle 22, has improved velocity of flow adjusting device's practicality.

Alternatively, the first shutter 21 has a first plug 21a and a first insertion hole 21b at its edge, and the first shutters 21 of the plurality of flow rate adjusting assemblies 2 are detachably connected by the first plug 21a and the first insertion hole 21 b. The second shutter 22 has a second plug 22a and a second insertion hole 22b at its edge, and the second shutter 22 of the plurality of flow rate adjustment sets 2 is detachably connected by the second plug 22a and the second insertion hole 22 b. Illustratively, when the size of the pipeline n is very large, the plurality of flow rate adjusting assemblies 2 may be fixedly connected to each other by inserting the first plug 21a of one of the adjacent two first baffles 21 of the plurality of flow rate adjusting assemblies 2 into the first insertion hole 21b of the other one of the adjacent two second baffles 22 into the second insertion hole 22b of the other one of the adjacent two second baffles 22, and finally, the plurality of flow rate adjusting assemblies 2 may be fixedly connected to the inner wall of the pipeline n by the fixing member 1. Simple structure, easy dismounting has further improved velocity of flow adjusting device's practicality.

For example, fig. 5 shows a schematic structural diagram in which only three flow rate adjusting assemblies 2 are arranged in parallel, and more flow rate adjusting assemblies 2 may be arranged in series according to the actual pipe diameter of the pipeline n1, as long as the flow rate of the medium such as oil liquid in the pipeline n can be controlled within a required flow rate range, which is not limited in the embodiment of the present disclosure.

It should be noted that, when the flow rate adjusting apparatus includes a plurality of flow rate adjusting assemblies 2, in order to ensure the connection stability between the plurality of flow rate adjusting assemblies 2 and the fixing member 1, two adjacent second baffles 22 of the plurality of flow rate adjusting assemblies 2 are fixedly connected through the second plug 22a and the second socket 22 b. As shown in fig. 4 and 5, for example, if the flow rate adjusting device includes three flow rate adjusting assemblies 2 connected in sequence, the second baffle 22 of the flow rate adjusting assembly 2 located in the middle is fixedly connected to the second baffles 22 of the two flow rate adjusting assemblies 2 located at both ends through the second plug 22a and the second jack 22b, respectively, and the second baffles 22 located at both ends are connected to the fixing member 1 in the same plane.

Fig. 6 is a schematic structural diagram of a fixing element provided in an embodiment of the present disclosure. As shown in fig. 6, the fixing member 1 includes a positioning ring 11, the positioning ring 11 has a mounting groove 111 on an inner wall thereof, and one of the first and second shutters 21 and 22 is mounted in the mounting groove 111. Exemplarily, in the embodiment of the present disclosure, the positioning ring 11 for fixing the flow rate adjusting assembly 2 is first fixedly connected to the inner wall of the pipeline n by welding or the like, and then the edge of the first baffle 21 or the second baffle 22 in the flow rate adjusting assembly 2 is clamped into the mounting groove 111 on the inner wall of the positioning ring 11, so that the flow rate adjusting assembly 2 can be fixedly connected to the inner wall of the pipeline n.

Fig. 7 is a schematic structural diagram of a connection between a fixing member and a second baffle according to an embodiment of the disclosure. As shown in fig. 7, the positioning ring 11 has a first end face 12 and a second end face 13 connected to the inner wall, and at least one of the first end face 12 and the second end face 13 has a chamfered face 1a at the connection with the inner wall. Through setting up chamfer 1a in the junction of at least one and the inner wall in first terminal surface 12 and second terminal surface 13, the internal diameter of chamfer 1a reduces gradually towards the direction that is close to mounting groove 111, is going into the in-process of mounting groove 111 with the edge card of second baffle 22 in velocity of flow adjustment assembly 2, can press the edge of second baffle 22 into mounting groove 111 along chamfer 1a, makes the fixed connection of mounting 1 and velocity of flow adjustment assembly 2 more smooth, easy to assemble.

For example, in the embodiment of the present disclosure, the chamfer surface 1a is provided only at the joint of the first end surface 12 and the inner wall of the positioning ring 11, and in other possible implementations, the chamfer surface 1a may be provided at the joint of the second end surface 13 and the inner wall of the positioning ring 11, or the chamfer 1a may be provided at the joint of the first end surface 12 and the inner wall of the positioning ring 11, and the joint of the second end surface 13 and the inner wall of the positioning ring 11, which is not limited by the present disclosure.

For example, in the embodiment of the present disclosure, the chamfered surface 1a may be a plane, or may be an arc surface, as long as it is ensured that the inner diameter of the chamfered surface 1a gradually decreases toward the direction approaching the mounting groove 111, and in the process of clamping the edge of the second baffle 22 in the flow rate adjusting assembly 2 into the mounting groove 111, as long as it is convenient for a worker to press the edge of the second baffle 22 into the mounting groove 111 along the chamfered surface 1a, the specific shape of the chamfered surface 1a is not limited in the embodiment of the present disclosure.

Fig. 8 is a schematic structural diagram of another fixing element connected to the second baffle according to an embodiment of the disclosure. As shown in fig. 8, the fixing member 1 further includes at least one support rod 14, the at least one support rod 14 is arranged along the diameter direction of the positioning ring 11, and both ends of the support rod 14 are connected to the positioning ring 11. Since the medium such as oil passing through the second baffle 22 may give a certain force to the surface of the second baffle 22, after the pipe flow rate limiting device works for a long time, the second baffle 22 installed in the positioning ring 11 may be bent and deformed by the force of the medium such as oil, and the flow path of the medium such as oil passing through the second baffle 22 through the second through hole 221 of the second baffle 22 may be changed again, resulting in a change in flow rate. Exemplarily, by providing the support rod 14 with two ends connected to the positioning ring 11 on the positioning ring 11, the support rod 14 is arranged along the radial direction of the positioning ring 11, and the support rod 14 can support the second baffle 22 in the axial direction of the positioning ring 11, so as to avoid the bending deformation of the second baffle 22, further improve the flow velocity stability of the medium, and prolong the service life of the flow velocity adjusting device.

For example, both ends of the supporting rod 14 may be fixedly connected to the inner wall of the positioning ring 11, or may be fixedly connected to the first end surface 12 or the second end surface 13 of the positioning ring 11, as long as the outer surface of the supporting rod 14 can contact with the plate surface of the second baffle 22 clamped in the mounting groove 111 to support the second baffle 22, which is not limited in this disclosure.

Alternatively, the first baffle 21 and the second baffle 22 are metal baffles. Illustratively, in the embodiment of the present disclosure, the first baffle 21 and the second baffle 22 are made of a metal material, such as a stainless steel material, which has good corrosion resistance and high mechanical strength and fatigue strength, so that corrosion by a medium such as oil can be avoided in a case of long-time use, or bending deformation under stress of the oil can be avoided, and the service life of the flow rate limiting device can be further prolonged.

The embodiment of the present disclosure also provides a conveying pipeline, which includes a pipeline n and at least one flow rate adjusting device as described in any one of fig. 1 to 8, where the at least one flow rate adjusting device is installed in the pipeline n.

Through set up flow rate adjusting device in the pipeline, the mounting is connected flow rate adjusting assembly to the inner wall of pipeline on, and one of first baffle and second baffle is connected with the mounting, and first baffle and second baffle are connected through the bimetallic strip to have a plurality of first through-holes on the first baffle, have on the second baffle with a plurality of second through-holes. When the oil liquid and other media in the pipeline are in a normal temperature state, the media can directly pass through the first baffle and the second baffle through the plurality of first through holes and the plurality of second through holes; when the temperature of the medium in the pipeline rises, the bimetallic strip is heated to be bent and deformed, the relative positions of the first baffle and the second baffle deviate, the area of the first through hole opposite to the second through hole is changed, the total resistance of the first baffle and the second baffle to the medium is changed, the flow path of the medium in the pipeline is changed, the resistance of the medium rises, the flow speed is reduced, and the phenomenon that the flow speed of the medium is too high due to the rise of the temperature of the medium is avoided. The flow velocity adjusting device of the pipeline can automatically adjust the flow velocity of the medium in the pipeline according to the temperature change of the medium in the pipeline, and the stability of the flow velocity of the medium is ensured.

The above description is intended to be exemplary only and not to limit the present disclosure, and any modification, equivalent replacement, or improvement made without departing from the spirit and scope of the present disclosure is to be considered as the same as the present disclosure.