Angle balance valve with real-time metering function

Abstract

The utility model relates to the technical field of fluid measurement, in particular to an angle balance valve with a real-time metering function. Comprising a valve body assembly, a valve element, a valve seat assembly and a differential pressure flow meter metering system, the valve body assembly comprises a first round pipe and a second round pipe, the valve element is arranged in the first round pipe, the first round pipe is provided with at least two sets of through holes which serve as a high pressure tapping opening and a low pressure tapping opening respectively, and the valve seat assembly is installed through the valve body assembly. The valve seat assembly is matched with the valve element, the two collecting ends of the differential pressure flowmeter metering system are connected with a high pressure tapping opening and a low pressure tapping opening respectively, and gas flow data of the current valve body assembly are obtained by collecting corresponding high pressure signals and low pressure signals. According to the utility model, the valve core is optimized by using fluid dynamics, so that the valve core has a throttling function, meanwhile, a differential pressure flowmeter metering system is introduced to meter the valve core in real time based on the throttling function, and the valve core and the valve seat assembly are combined for use, so that the real-time adjustment of the gas flow is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid measurement, in particular to an angle balancing valve with a real-time metering function. Background Art

[0002] Traditional angle balancing valves often utilize an S-shaped flow channel design. This inevitably causes flow separation when the medium flows through the valve core, resulting in a pressure differential upstream and downstream of the S-shaped flow channel. Flow is measured by placing pressure taps upstream and downstream of the valve core and seat within the pipeline, and connecting an external differential pressure sensor. However, this design fails to generate a stable differential pressure signal with a high signal-to-noise ratio, and therefore cannot provide accurate flow data for valve adjustment. To improve this situation, a new solution has emerged in the market: installing a Venturi-type throttling element upstream or downstream of the valve to generate a differential pressure to measure flow. For example, Chinese patent CN209325061U discloses a Venturi-type balancing valve, whose pressure detection point is located on the outlet side of the valve body, and the manual adjustment part is tilted toward the inlet side of the valve body as a whole, making the structure of the utility model compact and requiring less installation space than an ordinary balancing valve. On the other hand, the flow pressure differential curve of the valve does not change due to changes in the valve opening, making it easier to measure accurate flow data. For example, Chinese patent CN207298000U discloses a Venturi-type balancing valve solution, which consists of a Venturi-type measuring unit located upstream and a traditional ordinary valve downstream. Both of the above technical solutions use the differential pressure generated by the Venturi throttling element to measure flow. However, due to product structure reasons, the Venturi throttling element in both technical solutions is immediately adjacent to the valve core and valve seat, which cannot overcome the flow separation interference generated by the valve core and valve seat in the traditional S-shaped flow channel, and cannot obtain a differential pressure signal with a high signal-to-noise ratio, and therefore cannot accurately measure the flow in the valve. Utility Model Content

[0003] The purpose of the utility model is to provide an angle balancing valve with real-time metering function to solve the above-mentioned problems existing in the prior art.

[0004] Technical solution: An angle balancing valve with real-time metering function, comprising:

[0005] The valve body assembly includes a first circular tube and a second circular tube; the first circular tube and the second circular tube are connected at a preset angle;

[0006] The valve core is arranged in the first circular tube; the first circular tube is provided with at least two groups of through holes, the positions of the through holes correspond to the installation positions of the valve core, and serve as a high-pressure port and a low-pressure port respectively;

[0007] The valve seat assembly is installed through the valve body assembly; the valve seat assembly cooperates with the valve core to form a combined structure that produces a throttling effect on the gas in the valve body assembly;

[0008] The differential pressure flowmeter metering system has two collecting ends connected to the high-pressure pressure port and the low-pressure pressure port respectively; by collecting the corresponding high-pressure signal and low-pressure signal, the gas flow data of the current valve body assembly is obtained.

[0009] In a further embodiment, the valve core has a spindle-shaped structure, wherein the position of the high-pressure port corresponds to the head of the valve core; the position of the low-pressure port corresponds to the middle of the valve core.

[0010] In a further embodiment, the angle between the first circular tube and the second circular tube is 90°.

[0011] In a further embodiment, the valve seat assembly comprises:

[0012] The valve seat is arranged to slide in the first circular tube; the valve seat is provided with a flow hole; the shape of the flow hole is adapted to the tail of the valve core;

[0013] a support shaft, transversely mounted in the flow hole;

[0014] a connecting rod connected to the support shaft;

[0015] A shaft sleeve is installed at the right-angle end of the valve body assembly; an internal thread is provided in the shaft sleeve; the connecting rod is threadedly connected to the shaft sleeve; and a rotating shaft is installed at the end of the connecting rod passing through the right-angle end of the valve body assembly.

[0016] In a further embodiment, a first sealing ring is installed in the shaft sleeve.

[0017] In a further embodiment, a second sealing ring is provided between the valve seat and the first circular tube.

[0018] In a further embodiment, the middle portion of the valve core is a cylindrical structure.

[0019] In a further embodiment, a plurality of support plates are further included, and the support plates are evenly installed on the first circular tube to fix the position of the valve core.

[0020] In a further embodiment, flanges are installed at both ends of the valve body assembly.

[0021] In a further embodiment, the differential pressure flow meter metering system comprises:

[0022] The two collecting ends of the differential pressure sensor are respectively connected to the high pressure port and the low pressure port through the through pipe;

[0023] a flow computer, electrically connected to the differential pressure sensor;

[0024] A temperature sensor is used to measure the temperature of the air flow in the valve body assembly; the temperature sensor is electrically connected to the flow computer;

[0025] A display screen is electrically connected to the flow computer.

[0026] Beneficial effects:

[0027] 1. This application improves the traditional valve core to give it a throttling function. Based on the throttling function, a differential pressure flow meter measurement system is introduced to perform real-time measurement, thereby obtaining the current gas flow data in real time.

[0028] 2. This application combines the valve core and valve seat assembly to achieve effective regulation of gas flow. At the same time, the valve seat adopts a rotary movement and can be adaptively assembled with the valve core.

[0029] 3. This application can be directly installed at the bend of the HVAC system pipe, without the need to install elbows separately, saving installation space and cost.

[0030] 4. This application utilizes a fluid-dynamically optimized valve core as a throttling element and utilizes the structural characteristics of the angle valve to optimize the design of the valve seat, cleverly combining the measurement and regulation of the medium flow rate and saving installation space. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of this application.

[0032] Figure 2 This is a schematic diagram of the workflow of this application.

[0033] The reference numerals in the figure are: first round tube 1, second round tube 2, valve core 3, valve seat 4, support shaft 5, connecting rod 6, sleeve 7, rotating shaft 8, first sealing ring 9, second sealing ring 10, support plate 11, flange 12, high-pressure port 13, and low-pressure port 14. DETAILED DESCRIPTION

[0034] In the following description, numerous specific details are provided to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features known in the art are not described to avoid confusion with the present invention.

[0035] Example 1

[0036] Based on the angle-balanced valves commonly used in HVAC systems mentioned in the background, this embodiment redesigns this traditional angle-balanced valve, a non-linear valve, to accommodate gas flow measurement. While these valves provide more precise and controllable liquid flow measurements, HVAC gas flow measurement suffers from unstable data due to factors such as the inherent properties of the gas molecules and temperature.

[0037] This embodiment introduces a differential pressure sensing and metering method and proposes an adjustable angle balancing valve, which includes a valve body assembly, a valve core 3, a valve seat assembly, and a differential pressure flow meter system, wherein flanges 12 are installed at both ends of the valve seat assembly, and the valve body assembly includes a first circular tube 1 and a second circular tube 2. The first circular tube 1 is connected to the second circular tube 2, and a 90° angle is set between the two. The valve core 3 is installed in the first circular tube 1. The first circular tube 1 has at least two groups of through holes. The positions of the through holes correspond to the installation positions of the valve core 3, which serve as high-pressure ports 1 and 2, respectively. 3. Low-pressure port 14: A valve seat 4 assembly is mounted on the valve body assembly. The valve seat 4 assembly is combined with the valve core 3. By controlling the degree of opening and closing of the valve seat 4 and the valve core 3, that is, controlling their relative positional relationship, a combined structure is achieved that throttles the gas flow in the valve body assembly. Therefore, a differential pressure flowmeter system is used. The system's two acquisition terminals are respectively connected to the high-pressure port 13 and the low-pressure port 14. By collecting the corresponding high-pressure and low-pressure signals, the corresponding differential pressure calculation is performed to obtain the current gas flow data of the valve body assembly. In this embodiment, valves can be installed on the high-pressure port 13 and the low-pressure port 14, respectively, and the valves are opened during measurement.

[0038] In a further embodiment, the valve core 3 incorporates a structure similar to a throttling element, with a spindle-shaped outer shape. The axial cross-section of the head of the valve core 3 is arc-shaped or parabolic. The high-pressure port 13 is located corresponding to the head of the valve core 3, and the low-pressure port 14 is located corresponding to the middle of the valve core 3. To stabilize the low-pressure signal, the middle portion of the valve core 3 is a cylindrical structure, and the valve core 3 is fixed using multiple support plates 11, which are arranged axially symmetrically, so that the valve core 3 is located in the middle of the first circular tube 1.

[0039] In order to adapt to the shape of the valve core 3 and form an openable and closable structure, the valve seat 4 assembly in this embodiment includes a valve seat 4, a support shaft 5, a connecting rod 6, a rotating shaft 8, and a sleeve 7, wherein the valve seat 4 slides in the first circular tube 1, and the valve seat 4 is provided with a flow hole, the shape of which is adapted to the tail of the valve core 3, such as Figure 1As shown, the flow hole in this embodiment is shaped like a hyperboloid. A support shaft 5 is installed horizontally within the flow hole. A connecting rod 6 is connected to the support shaft 5. A sleeve 7 is installed at the right-angle end of the valve body assembly. The sleeve 7 is internally threaded, and the connecting rod 6 is threadedly connected to the sleeve 7. The connecting rod 6 passes through the end of the right-angle end of the valve body assembly and is mounted on a rotating shaft 8. The design of this solution is that the rotation of the rotating shaft 8 causes the valve seat 4 to rotate. Due to the threaded structure, the rotation of the valve seat 4 actually rotates and moves back and forth simultaneously, forming a spiral path. The threaded structure also has a self-locking function.

[0040] Furthermore, through the threaded structure, the movement plan of the valve seat 4 can be magnified, so that the accuracy of flow regulation is improved. At the same time, since there are always particulate impurities in the gas flow, the traditional linear sliding may cause large friction and easy clogging. The rotary movement can adjust the relative sliding relationship between the valve seat 4 and the first circular tube 1.

[0041] Furthermore, a second sealing ring 10 is provided between the valve seat 4 and the first circular tube 1 , a first sealing ring 9 is installed in the shaft sleeve 7 , and the outer surface of the valve seat 4 is smoothed.

[0042] In this embodiment, the differential pressure flow meter system includes a differential pressure sensor, a flow computer, a temperature sensor, and a display screen, wherein the two high and low pressure collection ends of the differential pressure sensor are respectively connected to the high pressure port 13 and the low pressure port 14 through a through pipe to collect the high and low pressures of the current flow gas, the temperature sensor measures the temperature of the airflow in the valve body assembly, the flow computer is respectively connected to the differential pressure sensor and the temperature sensor, receives the corresponding data and performs calculations, and the display screen displays the relevant data.

[0043] The differential pressure measurement principle in this embodiment is as follows: Q = Cd * A * √(2ΔP / ρ), where Q is the volume flow rate of the fluid, Cd is the fluid outflow coefficient (obtained by calibration), A is the flow cross-sectional area at the narrowest point of the valve core, ΔP is the differential pressure value between two points of the fluid, and ρ is the density of the fluid.

[0044] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be interpreted as limiting the present invention itself. Various changes may be made to it in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. An angle balancing valve with real-time metering function, characterized in that: include: The valve body assembly includes a first circular tube and a second circular tube; the first circular tube and the second circular tube are connected at a preset angle; The valve core is arranged in the first circular tube; the first circular tube is provided with at least two groups of through holes, the positions of the through holes correspond to the installation positions of the valve core, and serve as a high-pressure port and a low-pressure port respectively; The valve seat assembly is installed through the valve body assembly; the valve seat assembly cooperates with the valve core to form a combined structure that produces a throttling effect on the gas in the valve body assembly; The differential pressure flowmeter metering system has two collecting ends connected to the high-pressure pressure port and the low-pressure pressure port respectively; by collecting the corresponding high-pressure signal and low-pressure signal, the gas flow data of the current valve body assembly is obtained.

2. The angle balancing valve with real-time metering function according to claim 1, characterized in that: The valve core has a spindle-shaped structure, wherein the position of the high-pressure port corresponds to the head of the valve core; the position of the low-pressure port corresponds to the middle of the valve core.

3. The angle balancing valve with real-time metering function according to claim 2, characterized in that: The included angle between the first circular tube and the second circular tube is 90°.

4. The angle balancing valve with real-time metering function according to claim 3, characterized in that: The valve seat assembly comprises: The valve seat is arranged to slide in the first circular tube; the valve seat is provided with a flow hole; the shape of the flow hole is adapted to the tail of the valve core; a support shaft, transversely mounted in the flow hole; a connecting rod connected to the support shaft; A shaft sleeve is installed at the right-angle end of the valve body assembly; an internal thread is provided in the shaft sleeve; the connecting rod is threadedly connected to the shaft sleeve; and a rotating shaft is installed at the end of the connecting rod passing through the right-angle end of the valve body assembly.

5. The angle balancing valve with real-time metering function according to claim 4, characterized in that: A first sealing ring is installed in the shaft sleeve.

6. The angle balancing valve with real-time metering function according to claim 4, characterized in that: A second sealing ring is provided between the valve seat and the first circular tube.

7. The angle balancing valve with real-time metering function according to claim 2, characterized in that: The middle part of the valve core is a cylindrical structure.

8. The angle balancing valve with real-time metering function according to claim 1, characterized in that: It also includes a plurality of support plates, which are evenly installed on the first circular tube and are used to fix the position of the valve core.

9. The angle balancing valve with real-time metering function according to claim 1, characterized in that: Flanges are installed at both ends of the valve body assembly.

10. The angle balancing valve with real-time metering function according to claim 1, characterized in that: The differential pressure flow meter measuring system includes: The two collecting ends of the differential pressure sensor are respectively connected to the high pressure port and the low pressure port through the through pipe; a flow computer, electrically connected to the differential pressure sensor; A temperature sensor is used to measure the temperature of the air flow in the valve body assembly; the temperature sensor is electrically connected to the flow computer; A display screen is electrically connected to the flow computer.

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