Pipe network system and regulating valve

Abstract

The utility model discloses a pipe network system and a regulating valve, and relates to the technical field of fluid pipeline systems.The regulating valve comprises a shell, a pressure drop part and a valve clack are sequentially arranged in a liquid flow channel of the shell in the liquid flowing direction, the pressure drop part divides the liquid flow channel into a high-pressure area and a low-pressure area, and the pressure drop part is an annular plate body; the outer side wall of the annular plate body is attached to the inner side wall of the liquid flow channel, the annular plate body is provided with a through hole, and the surface of the shell is provided with a first pressure drop pressure measuring end and a second pressure drop pressure measuring end which are parallel to each other. According to the pressure measuring device, the three pressure measuring ends at different positions are arranged, and the avoiding space is formed between any two of the three pressure measuring ends, so that the problem that in the prior art, installation is inconvenient due to the fact that the positions of the two pressure measuring ends are fixed is solved to a certain extent, and the two pressure measuring ends can be selected to measure pressure according to the actual situation.

Description

Technical Field

[0001] This application relates to the field of fluid pipeline system technology, and in particular to a pipeline network system and a regulating valve. Background Technology

[0002] Pipeline systems generally include two types: parallel pipelines and parallel pipelines. For HVAC and water supply and drainage systems, parallel pipelines are usually used. Parallel pipelines refer to the fact that the length of the pipeline from the starting point to each terminal device is different. Because the path length is different, the resistance is also different. The water will preferentially take the loop with less resistance, resulting in insufficient water supply at some terminals and uneven flow distribution.

[0003] To address the aforementioned issues, a regulating valve, also known as a two-position regulating valve, two-way regulating valve, or balancing valve, is installed in the variable flow pipeline. By adjusting the opening of the regulating valve, a uniform flow distribution is achieved. However, the regulating valve in this technology still has some technical problems. For example, the regulating valve casing has two pressure measuring terminals. The pressure difference between the two measuring terminals is measured and read by an external measuring instrument to calculate the actual flow rate. It is evident that the positions of the two pressure measuring terminals relative to the casing are fixed. This means that the position of the measuring point is fixed and unchanging. During installation, the connection of the measuring instrument may be limited by space, increasing installation difficulty and time costs.

[0004] In view of this, how to solve the above-mentioned technical problems caused by the fixed position of the pressure measuring port is a question worth considering for those skilled in the art. Utility Model Content

[0005] The purpose of this application is to provide a pipeline system and regulating valves to at least partially solve the aforementioned technical problems.

[0006] To achieve the above objective, this application provides a regulating valve, including a housing. A pressure drop element and a valve disc are sequentially arranged along the liquid flow direction in the liquid flow channel of the housing. The pressure drop element divides the liquid flow channel into a high-pressure zone and a low-pressure zone. The pressure drop element is an annular plate, with its outer side wall fitting against the inner side wall of the liquid flow channel. The annular plate has a through hole. The surface of the housing has a first pressure drop measuring end and a second pressure drop measuring end that are parallel to each other. The high-pressure zone has the first pressure drop measuring end, and the low-pressure zone has the second pressure drop measuring end. The first and second pressure drop measuring ends extend in a direction away from the housing and are spaced apart. The valve disc is located in the low-pressure zone. The surface of the housing also has a throttling measuring end located downstream of the valve disc. The throttling measuring end extends in a direction away from the housing and is in a different direction from the first pressure drop measuring end. There is a clearance space between any two of the throttling measuring end, the first pressure drop measuring end, and the second pressure drop measuring end.

[0007] Preferably, the valve disc is columnar, and the bottom of the valve disc has an arc-shaped transition.

[0008] Preferably, the regulating valve further includes a drive assembly connected to the valve disc, which moves the valve disc in directions facing and away from the liquid flow path.

[0009] Preferably, the drive assembly includes an electric drive rod, with one end of the electric drive rod facing the liquid flow channel threadedly connected to the valve disc, and the other end of the electric drive rod facing away from the liquid flow channel connected to a drive motor.

[0010] Preferably, the drive assembly includes a drive rod and a manual wheel, with the end of the drive rod facing the liquid flow channel threadedly connected to the valve disc, and the end of the drive rod away from the liquid flow channel connected to the manual wheel.

[0011] Preferably, the drive rod is inclined relative to the liquid flow channel, and the end of the drive rod away from the liquid flow channel extends in a direction away from both the first pressure drop measuring end and the second pressure drop measuring end.

[0012] Preferably, the regulating valve further includes an inclined sleeve connected to the outer shell. The inclined sleeve is provided with a valve disc and a drive rod. The manual wheel is located on the outer side of the end of the inclined sleeve away from the liquid flow channel. There is operating space between the inclined sleeve and the throttling pressure measuring end, between the inclined sleeve and the first pressure drop measuring end, and between the inclined sleeve and the second pressure drop measuring end.

[0013] Preferably, the acute angle between the axial direction of the drive rod and the axial direction of the liquid flow channel is 20°-70°.

[0014] Preferably, the manual wheel is provided with an indicator for indicating the valve opening degree.

[0015] A pipeline system includes pipelines, on which regulating valves as described above are installed.

[0016] Compared to the aforementioned background technology, the regulating valve provided by this utility model utilizes a pressure drop component to divide the liquid flow channel into a high-pressure zone and a low-pressure zone. The high-pressure zone is equipped with a first pressure drop measuring terminal, and the low-pressure zone is equipped with a second pressure drop measuring terminal. A valve disc is installed in the low-pressure zone, and a throttling measuring terminal is also provided downstream of the valve disc. In this invention, the pressure drop component is an annular plate, with its outer wall fitting against the inner wall of the liquid flow channel. The annular plate has a through hole, and its presence effectively reduces pressure. A pressure difference is formed between the liquid in the flow channel and the annular plate, thus creating a high-pressure zone and a low-pressure zone within the liquid flow channel. The first... The pressure drop measuring terminal and the second pressure drop measuring terminal are arranged parallel to each other. The extension directions of the first pressure drop measuring terminal and the second pressure drop measuring terminal are different from the extension direction of the throttling measuring terminal. At the same time, there is a clearance space between any two of the throttling measuring terminal, the first pressure drop measuring terminal and the second pressure drop measuring terminal. In this way, the first pressure drop measuring terminal and the second pressure drop measuring terminal can be connected to an external debugging instrument to measure the pressure difference between the first pressure drop measuring terminal and the second pressure drop measuring terminal. Alternatively, the second pressure drop measuring terminal and the throttling measuring terminal located in the low pressure area can be connected to an external debugging instrument to realize pressure difference measurement.

[0017] Therefore, this application provides three pressure measuring terminals in different positions (throttling pressure measuring terminal, first pressure drop pressure measuring terminal, and second pressure drop pressure measuring terminal). There is clearance between any two of the three pressure measuring terminals, which allows for the selection of two pressure measuring terminals for pressure measurement depending on the actual situation. In short, this application provides three pressure measuring terminals in different positions to replace the two pressure measuring terminals in the prior art, which improves the applicable scenarios and solves to some extent the technical problem of inconvenience in installation caused by the fixed position of two pressure measuring terminals in the prior art. It is clear that the three pressure measuring terminals in different positions are more flexible than the two pressure measuring terminals in terms of both applicable occasions and installation methods, and the applicability is improved. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the regulating valve provided in an embodiment of this application;

[0020] Figure 2 An exploded view of the regulating valve provided in the embodiments of this application, excluding the outer shell and the inclined sleeve;

[0021] Figure 3 for Figure 2 A schematic diagram of the drive assembly, the first voltage drop measuring terminal, the second voltage drop measuring terminal, and the throttling measuring terminal;

[0022] Figure 4 This is a schematic diagram of the structure of the regulating valve provided in the embodiments of this application, excluding the manual wheel and the indicator.

[0023] Figure 5 This is a schematic diagram of the drive assembly of the regulating valve provided in an embodiment of this application.

[0024] The components are: 1. Outer shell; 11. Liquid flow channel; 2. Pressure drop component; 21. Through hole; 3. Valve disc; 41. First pressure drop measuring terminal; 42. Second pressure drop measuring terminal; 5. Throttling measuring terminal; 6. Drive assembly; 61. Drive rod; 62. Manual wheel; 7. Inclined sleeve; 8. Indicator. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] It should be noted that the directional terms such as "upper end," "lower end," "left side," and "right side" mentioned below are defined based on the accompanying drawings in the instruction manual.

[0028] Example 1:

[0029] Please see Figures 1 to 5 The present application provides a regulating valve, including a housing 1. A pressure drop member 2 and a valve disc 3 are arranged sequentially along the liquid flow direction in the liquid flow channel 11 of the housing 1. The pressure drop member 2 divides the liquid flow channel 11 into a high-pressure zone and a low-pressure zone. The pressure drop member 2 is an annular plate. The outer side wall of the annular plate is attached to the inner side wall of the liquid flow channel 11. The annular plate is provided with a through hole 21.

[0030] The surface of the housing 1 is provided with a first pressure drop measuring terminal 41 and a second pressure drop measuring terminal 42 that are parallel to each other. The first pressure drop measuring terminal 41 is provided in the high pressure area, and the second pressure drop measuring terminal 42 is provided in the low pressure area. The first pressure drop measuring terminal 41 and the second pressure drop measuring terminal 42 extend in a direction away from the housing 1 and are spaced apart. The valve disc 3 is located in the low pressure area. The surface of the housing 1 is also provided with a throttling measuring terminal 5. The throttling measuring terminal 5 is located in the downstream area of ​​the valve disc 3. The throttling measuring terminal 5 extends in a direction away from the housing 1 and is in a different direction from the extension direction of the first pressure drop measuring terminal 41. There is a clearance space between any two of the three: the throttling measuring terminal 5, the first pressure drop measuring terminal 41 and the second pressure drop measuring terminal 42.

[0031] This application provides a pressure drop element 2 and a valve disc 3 inside the housing 1. The housing 1 can be specifically cylindrical. The interior of the housing 1 has a liquid flow channel 11. The liquid in the liquid flow channel 11 flows from one end to the other end. The pressure drop element 2 and the valve disc 3 are arranged sequentially along the liquid flow direction. That is, the pressure drop element 2 is closer to the liquid inlet than the valve disc 3, and the valve disc 3 is closer to the liquid outlet than the pressure drop element 2.

[0032] The presence of pressure-reducing component 2 divides the liquid flow channel 11 into a high-pressure zone and a low-pressure zone. In this paper, pressure-reducing component 2 is set as an annular plate, whose outer wall is tightly fitted with the inner wall of the liquid flow channel 11, or it can be integrally formed. The annular plate is provided with through holes 21. When the liquid in the liquid flow channel 11 flows through the annular plate through the through holes 21, the flow velocity increases and the static pressure decreases. It can be seen that the main function of pressure-reducing component 2 is to locally contract the liquid flow stream, thereby reducing the pressure and forming a high-pressure zone and a low-pressure zone inside the liquid flow channel 11.

[0033] Valve disc 3 is located in the low-pressure zone. Valve disc 3 achieves pressure measurement before and after valve disc 3 by changing the flow area of ​​the liquid. Similar to the function of pressure drop component 2, the main function of valve disc 3 is also to regulate pressure.

[0034] This application provides a first pressure drop measuring terminal 41 in the high-pressure area, a second pressure drop measuring terminal 42 in the low-pressure area, and a throttling measuring terminal 5 in the downstream region of the valve disc 3. The first pressure drop measuring terminal 41 and the second pressure drop measuring terminal 42 extend away from the outer casing 1 and are spaced apart. The throttling measuring terminal 5 extends away from the outer casing 1 and has a different extension direction than the first pressure drop measuring terminal 41. There is a clearance space between any two of the three: the throttling measuring terminal 5, the first pressure drop measuring terminal 41, and the second pressure drop measuring terminal 42.

[0035] The clearance space mentioned in this article refers to the area that avoids interference when connecting each type of pressure measuring terminal (whether it is the throttling pressure measuring terminal 5, the first pressure drop pressure measuring terminal 41, or the second pressure drop pressure measuring terminal 42) to the measuring instrument. This ensures that the measuring instrument and each type of pressure measuring terminal can be installed and disassembled smoothly without causing operational inconvenience due to excessive proximity.

[0036] As can be seen, a pressure measuring terminal is provided for different pressure zones, greatly expanding the applicable scenarios and avoiding the corresponding problems caused by only providing two pressure measuring terminals in the prior art. In addition, for each type of pressure measuring terminal (whether it is the throttling pressure measuring terminal 5, the first pressure drop pressure measuring terminal 41, or the second pressure drop pressure measuring terminal 42), the number can be set to one, two, or more. Having two or more pressure measuring terminals of each type further expands the applicable scenarios and flexibly adapts to different pipeline systems. Of course, for reliability and cost considerations, each type of pressure measuring terminal in this application can also be set to one (as shown in the attached diagram). Figure 1 This can also solve, to some extent, the installation limitations caused by the fixed positions of the two pressure testing terminals.

[0037] In use, the first pressure drop measuring terminal 41 and the second pressure drop measuring terminal 42 can be connected to external measuring instruments to measure the pressure difference between them. Similarly, the throttling measuring terminal 5 and the second pressure drop measuring terminal 42 can also be connected to external measuring instruments to measure the pressure difference between them. Of course, the first pressure drop measuring terminal 41 and the throttling measuring terminal 5 can also be used with external measuring instruments to achieve pressure difference measurement. Generally, the external measuring instruments connected to the first pressure drop measuring terminal 41 and the second pressure drop measuring terminal 42 are mainly used under high flow conditions, while the external measuring instruments connected to the throttling measuring terminal 5 and the second pressure drop measuring terminal 42 are mainly used under low flow conditions. This approach combines the convenience of fixed throttling measurement with the accuracy of variable throttling measurement, significantly expanding its applicability.

[0038] In some embodiments, the valve disc 3 is columnar, and the bottom of the valve disc 3 has an arc-shaped transition. In conjunction with the above, the main function of the valve disc 3 is to regulate the pressure. The pressure is regulated by the extent to which the valve disc 3 extends into the liquid flow channel 11. The arc-shaped transition at the bottom of the valve disc 3 effectively enables the smooth flow of liquid, while avoiding excessive noise caused by the liquid flowing through the valve disc 3. Furthermore, considering that the cross-section of the liquid flow channel 11 is circular, the arc-shaped transition at the bottom of the valve disc 3 can better adapt to the inner wall of the liquid flow channel 11.

[0039] In some embodiments, the drive assembly 6 includes a drive rod 61 and a manual wheel 62. The end of the drive rod 61 facing the liquid flow channel 11 is threadedly connected to the valve disc 3, and the end of the drive rod 61 away from the liquid flow channel 11 is connected to the manual wheel 62.

[0040] Specifically, in order to drive the valve disc 3 to move in directions facing and away from the liquid flow channel 11 to adjust the opening, the regulating valve is provided with a drive assembly 6. In a preferred manual embodiment, the drive assembly 6 includes a drive rod 61 threadedly connected to the valve disc 3 and a manual wheel 62 connected to the distal end of the drive rod 61.

[0041] This method ensures that the relatively large manual wheel 62 and the operator's hand movement area are completely spatially offset from the vertically or horizontally positioned throttling pressure measuring terminal 5, the first pressure drop measuring terminal 41, and the second pressure drop measuring terminal 42. This guarantees sufficient clearance between any two of the three terminals; simultaneously, the inclined sleeve 7 and each measuring terminal form a non-interfering operating space. This not only avoids physical conflicts during installation and use but also ensures that commissioning personnel can easily and without obstacles connect and measure any two measuring terminals using measuring instruments. It also ensures that the manual wheel 62 can rotate freely 360°, greatly improving the convenience and safety of on-site operation.

[0042] The operating space here is similar to the clearance space described above. It can be considered that during the installation and disassembly of the pressure measuring end and the measuring instrument, the inclined sleeve 7 will not cause physical interference to the operation process, thus smoothly realizing the connection and disassembly of the measuring instrument and the pressure measuring end.

[0043] In some embodiments, the drive rod 61 is inclined relative to the liquid flow channel 11, and the end of the drive rod 61 facing away from the liquid flow channel 11 extends in a direction away from both the first pressure drop measuring terminal 41 and the second pressure drop measuring terminal 42. The regulating valve also includes an inclined sleeve 7, which is connected to the housing 1. The inclined sleeve 7 contains a valve disc 3 and the drive rod 61. The manual wheel 62 is located on the outer side of the end of the inclined sleeve 7 facing away from the liquid flow channel 11. There is operating space between the inclined sleeve 7 and the throttling measuring terminal 5, between the inclined sleeve 7 and the first pressure drop measuring terminal 41, and between the inclined sleeve 7 and the second pressure drop measuring terminal 42 to avoid installation conflicts. The acute angle between the axial direction of the drive rod 61 and the axial direction of the liquid flow channel 11 is 20°-70°.

[0044] In the above configuration, the drive rod 61 and the inclined sleeve 7 are not vertically arranged relative to the horizontal liquid flow channel 11, but are arranged at an angle. The end of the drive rod 61 that is away from the liquid flow channel 11, that is, the end where the manual wheel 62 is, extends in a direction away from the first pressure drop measuring end 41 and the second pressure drop measuring end 42.

[0045] This paper sets the acute angle between the axis of the drive rod 61 and the axis of the liquid flow channel 11 to between 20° and 70°, thereby avoiding excessive occupation of vertical space by the drive rod 61, improving space utilization, and better optimizing the layout of the operating space. The structural rationality of the regulating valve is significantly improved. This paper preferably sets the acute angle between the axis of the drive rod 61 and the axis of the liquid flow channel 11 to 45°, so that the end of the drive rod 61 away from the liquid flow channel 11 will not be too close to or too far from the liquid flow channel 11. This can optimize space utilization and improve the ease of operation.

[0046] In some embodiments, the manual wheel 62 is provided with an indicator 8 for indicating the opening degree of the valve disc 3. The indicator 8 includes a scale for indicating the valve opening degree.

[0047] To further facilitate users, the manual wheel 62 is also equipped with an indicator 8 for intuitively displaying the valve opening degree. Operators can make adjustments and records more accurate by using a scale with precise graduations.

[0048] Example 2:

[0049] Embodiment 2 shares most of the same structure as Embodiment 1, the difference being the type of drive component 6. This embodiment employs an electric drive. The drive component 6 may include an electric drive rod, one end of which is connected to the valve disc 3, and the other end is connected to a drive motor. This electric solution can also adopt an inclined installation layout to achieve space clearance with the pressure measuring end. This implementation is suitable for systems requiring automated control or remote adjustment.

[0050] In some embodiments, the regulating valve further includes a drive assembly 6, which is connected to the valve disc 3 to move the valve disc 3 in directions facing and away from the liquid flow channel 11. The drive assembly 6 includes an electric drive rod, one end of which is threadedly connected to the valve disc 3 facing the liquid flow channel 11, and the other end of which is connected to a drive motor.

[0051] Example 3:

[0052] This application also provides a pipeline system, which includes pipelines and a regulating valve on the pipelines. The specific structure and function of the regulating valve can be found in Embodiments 1 and 2. Since the regulating valve can provide convenient and accurate measurement and balancing regulation capabilities across the entire operating range, regardless of whether the flow rate is large or small, the pipeline system using this valve has higher commissioning efficiency and operational efficiency.

[0053] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0054] The pipeline system and regulating valve provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the solution and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A regulating valve comprising a housing (1), characterized in that The liquid flow channel (11) of the shell (1) is sequentially provided with a pressure drop piece (2) and a valve flap (3) in the liquid flow direction, the pressure drop piece (2) divides the liquid flow channel (11) into a high pressure area and a low pressure area, the pressure drop piece (2) is an annular plate body, the outer side wall of the annular plate body is attached to the inner side wall of the liquid flow channel (11), the annular plate body is provided with a through hole (21), the surface of the shell (1) is provided with a first pressure drop pressure measuring end head (41) and a second pressure drop pressure measuring end head (42) which are parallel to each other, the high pressure area is provided with the first pressure drop pressure measuring end head (41), the low pressure area is provided with the second pressure drop pressure measuring end head (42), the first pressure drop pressure measuring end head (41) and the second pressure drop pressure measuring end head (42) extend in the direction away from the shell (1) and are spaced apart; the valve flap (3) is located in the low pressure area, the surface of the shell (1) is further provided with a throttling pressure measuring end head (5), the throttling pressure measuring end head (5) is located in the downstream area of the valve flap (3), the throttling pressure measuring end head (5) extends in the direction away from the shell (1) and the extension direction of the first pressure drop pressure measuring end head (41) is different; any two of the throttling pressure measuring end head (5), the first pressure drop pressure measuring end head (41) and the second pressure drop pressure measuring end head (42) have an avoiding space.

2. The regulating valve according to claim 1, characterized in that The valve flap (3) is columnar, and the bottom of the valve flap (3) has an arc-shaped transition.

3. The regulating valve according to claim 1, characterized in that The regulating valve further comprises a driving assembly (6), the driving assembly (6) and the valve flap (3) are connected, so that the valve flap (3) moves in the direction facing and away from the liquid flow channel (11).

4. The regulating valve according to claim 3, characterized in that The driving assembly (6) comprises an electric driving rod, one end of the electric driving rod facing the liquid flow channel (11) is threadedly connected with the valve flap (3), and the other end of the electric driving rod away from the liquid flow channel (11) is connected with a driving motor.

5. The regulating valve according to claim 3, characterized in that The driving assembly (6) comprises a driving rod (61) and a manual wheel (62), one end of the driving rod (61) facing the liquid flow channel (11) is threadedly connected with the valve flap (3), and the other end of the driving rod (61) away from the liquid flow channel (11) is connected with the manual wheel (62).

6. The regulating valve according to claim 5, characterized in that The driving rod (61) is arranged obliquely relative to the liquid flow channel (11), and the other end of the driving rod (61) away from the liquid flow channel (11) extends in a direction away from both the first pressure drop pressure measuring end head (41) and the second pressure drop pressure measuring end head (42).

7. The regulating valve according to claim 6, characterized in that The regulating valve further comprises an inclined sleeve (7), the inclined sleeve (7) and the shell (1) are connected, the valve flap (3) and the driving rod (61) are arranged in the inclined sleeve (7), the manual wheel (62) is located outside the end of the inclined sleeve (7) away from the liquid flow channel (11), and operation spaces are formed between the inclined sleeve (7) and the throttling pressure measuring end head (5), between the inclined sleeve (7) and the first pressure drop pressure measuring end head (41), and between the inclined sleeve (7) and the second pressure drop pressure measuring end head (42).

8. The regulating valve according to claim 6, characterized in that The acute angle between the axial direction of the driving rod (61) and the axial direction of the liquid flow channel (11) is 20-70 degrees.

9. Regulating valve according to any of claims 5-8, characterized in that An indicating member (8) for indicating the opening of the valve disc (3) is arranged on the manual wheel (62).

10. A piping network system characterized by, The application further provides a pipeline provided with the regulating valve according to any one of claims 1-9.

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