Steam-state mixed-phase continuous metering device

Abstract

The utility model relates to a vapor-state mixed-phase continuous metering device which comprises a valve body, the valve body is integrally forged, aerogel is sprayed on the outer wall of the valve body, two end holes are coaxially formed in the end face of the valve body, two side holes are formed in the side wall of the valve body, a limiting ring extends in the valve body, and the limiting ring is arranged in the valve body. A hole plate is welded to the limiting ring in an attached mode, and the hole plate is located between the two side holes. One end of each spiral pressure guide pipe is communicated with the corresponding side hole, the other end of each spiral pressure guide pipe is provided with a needle valve, and the two needle valves are communicated with a three-valve group; the multi-parameter transmitter is communicated with the three-valve group, and the multi-parameter transmitter is communicated with the three-valve group. The valve body is arranged by adopting an integral forge piece, so that the integrity and the sealing performance of the structure are ensured, leakage points possibly generated by traditional welding or splicing are eliminated, and the reliability and the durability of equipment are improved. The surface of the valve body is coated with aerogel, and the whole shell can be subjected to heat insulation and heat preservation.

Description

Technical Field

[0001] The present application relates to the field of automated detection and metering, and specifically to a vapor mixed-phase continuous metering device. Background Art

[0002] A continuous vapor mixed-phase metering device is a device specifically designed to measure and record the flow rate of vapor multiphase fluids (such as gas mixtures). It typically features high accuracy, high repeatability, and a wide measuring range, meeting the metering needs of complex industrial environments. Through built-in throttling elements (orifice plates) and multi-parameter transmitters, the device enables precise metering and analysis of the components in vapor multiphase fluids.

[0003] The measurement principle of a continuous metering device for mixed vapor phases is based on the Bernoulli equation. The flow rate is calculated by measuring the pressure differential generated when a fluid flows through a throttling device. This is because when a fluid passes through a throttling device (orifice plate), the cross-sectional area suddenly decreases, increasing the flow rate. This creates a pressure differential across the throttling device. This pressure differential is proportional to the mass flow rate of the fluid, and by measuring this pressure differential, the flow rate can be calculated.

[0004] In the related art, current pressure difference measuring devices usually use orifice flow meters. Conventional orifice flow meters usually have external leakage points, are easily affected by environmental factors such as temperature, and may not work stably under complex working conditions. Summary of the Invention

[0005] The present application provides a continuous metering device for a vapor mixed phase, which can solve the problem that current pressure difference measuring devices usually use orifice flow meters. Conventional orifice flow meters usually have external leakage points, are easily affected by environmental factors such as temperature, and may not work stably under complex working conditions.

[0006] The embodiment of the present application provides a vapor mixed phase continuous metering device, which includes:

[0007] The valve body is integrally forged, the outer wall of the valve body is sprayed with aerogel, the end face of the valve body is coaxially provided with two end holes, and the side wall of the valve body is provided with two side holes, a limit ring extends inside the valve body, and the limit ring is welded with an orifice plate, and the orifice plate is located between the two side holes;

[0008] Two spiral pressure-inducing tubes, one end of each spiral pressure-inducing tube is connected to the corresponding side hole, and the other end of each spiral pressure-inducing tube is equipped with a needle valve, and the two needle valves are connected to a three-valve group;

[0009] A multi-parameter transmitter is connected to the three-valve group.

[0010] In one embodiment, the three-valve group includes:

[0011] Shell 1;

[0012] A high-pressure valve, a low-pressure valve and a balancing valve, wherein the high-pressure valve, the low-pressure valve and the balancing valve are installed in the housing 1, the high-pressure valve is connected to the high-pressure hole of the multi-parameter transmitter, the low-pressure valve is connected to the low-pressure hole of the multi-parameter transmitter, and the balancing valve is located between the high-pressure valve and the low-pressure valve, and is used to balance the pressure of the high-pressure valve and the low-pressure valve.

[0013] In one embodiment, the multi-parameter transmitter includes:

[0014] Shell 2, wherein the shell 2 is provided with a high-pressure hole and a low-pressure hole, and the high-pressure hole and the low-pressure hole are connected to the three-valve group;

[0015] A differential pressure sensor built into the second housing, the differential pressure sensor being used to measure the pressure difference between two different points;

[0016] A circuit board is electrically connected to the differential pressure sensor, the circuit board is used to process the signal collected by the differential pressure sensor, and the circuit board is provided with a voltage stabilization compensation and mathematical model module.

[0017] In one embodiment, the multi-parameter transmitter further includes:

[0018] A pressure sensor is built into the second housing, the circuit board is electrically connected to the pressure sensor, and the pressure sensor is used to measure the pressure inside the second housing.

[0019] In one embodiment, the multi-parameter transmitter further includes:

[0020] A temperature sensor is installed on the second housing, the circuit board is electrically connected to the temperature sensor, and the temperature sensor is used to measure the temperature of the second housing.

[0021] In one embodiment, the multi-parameter transmitter further includes:

[0022] A display screen, wherein the circuit board is electrically connected to the display screen, and the display screen is used to display the data collected by the differential pressure sensor.

[0023] In one embodiment, the vapor mixed phase continuous metering device further comprises:

[0024] The column, the multi-parameter transmitter, the three-valve group, the needle valve, the two spiral pressure-inducing tubes and the valve body are distributed in sequence, and the spiral pressure-inducing tubes and the valve body are fixed to the column.

[0025] In one embodiment, one end of the column is configured to be an arc surface and is fixed to the side wall of the valve body.

[0026] In one embodiment, the vapor mixed phase continuous metering device further comprises:

[0027] A fixing assembly is provided on the column and is used to fix the other end of the spiral pressure-inducing tube to the column.

[0028] In one embodiment, the fixing assembly comprises:

[0029] A threaded rod, wherein the outer wall of the threaded rod is provided with two limit blocks, and the two limit blocks have two arc-shaped grooves on the sides facing each other;

[0030] The outer wall of the other end of the spiral pressure-inducing tube is arranged in the two arc-shaped grooves facing each other;

[0031] A nut is threadedly connected to the outer wall of the threaded rod, and the nut is used to press the two limit blocks tightly together.

[0032] The beneficial effects of the technical solutions provided in the embodiments of the present application include:

[0033] The valve body is forged in one piece, ensuring structural integrity and tightness. This eliminates leaks that can occur with traditional welding or splicing, significantly improving the device's reliability and durability. The one-piece valve body is adaptable to most operating conditions. The valve body is coated with aerogel for integral insulation. Aerogel's extremely low thermal conductivity effectively isolates the internal measurement environment from external temperature influences, ensuring measurement stability and accuracy. The orifice plate can be secured to a retaining ring and then welded using laser or argon arc welding. This ensures strength while minimizing welding distortion and ensuring metering accuracy. The spiral pressure-inducing conduit features a helical structure, effectively preventing condensate from directly impacting the multi-parameter transmitter. This increases the length and tortuosity of the fluid path, slowing the condensate flow rate and minimizing impact and potential damage. The needle valve and three-valve manifold ensure that steam is effectively controlled and protected before entering the multi-parameter transmitter, improving measurement accuracy and enhancing equipment safety by preventing accidental leaks and the risk of overpressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0035] Figure 1 A schematic diagram of the three-dimensional structure of a vapor mixed-phase continuous metering device from a first perspective;

[0036] Figure 2 A schematic diagram of the three-dimensional structure of the vapor mixed-phase continuous metering device from a second perspective;

[0037] Figure 3 It is a partially enlarged structural schematic diagram of a vapor mixed phase continuous metering device;

[0038] Figure 4 Schematic diagram of the internal structure of the valve body.

[0039] In the figure: 1. Valve body; 11. End hole; 12. Side hole; 13. Limit ring; 14. Orifice plate; 2. Spiral pressure-inducing tube; 3. Needle valve; 4. Three-valve group; 5. Multi-parameter transmitter; 6. Column; 7. Fixing assembly; 71. Threaded rod; 72. Limit block; 721. Arc groove; 73. Nut. DETAILED DESCRIPTION

[0040] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0041] The present application provides a continuous metering device for a vapor mixed phase, which can solve the problem that current pressure difference measuring devices usually use orifice flow meters. Conventional orifice flow meters usually have external leakage points, are easily affected by environmental factors, and may not work stably under complex working conditions.

[0042] like Figure 1 、 Figure 2 and Figure 3 As shown, an embodiment of the present application provides a vapor mixed-phase continuous metering device, which includes: a valve body 1, which is an integral forging arrangement, the outer wall of the valve body 1 is sprayed with aerogel, and the end face of the valve body 1 is coaxially provided with two end holes 11, the two end holes 11 are used to be connected to a pipeline system for conveying a vapor mixed-phase medium so as to introduce or discharge the medium into or out of the metering device, and the side wall of the valve body 1 is provided with two side holes 12, a limit ring 13 is extended inside the valve body 1, and the limit ring 13 is welded with an orifice plate 14, and the orifice plate 14 is located between the two side holes 12; two spiral pressure-inducing tubes 2, one end of the spiral pressure-inducing tube 2 is connected to the corresponding side hole 12, and a needle valve 3 is installed at the other end thereof, and the two needle valves 3 are connected to a three-valve group 4; a multi-parameter transmitter 5, and the multi-parameter transmitter 5 is connected to the three-valve group 4.

[0043] In this embodiment, the valve body 1 is forged in one piece, ensuring structural integrity and sealing, eliminating potential leaks associated with traditional welding or splicing, and significantly improving the reliability and durability of the device. The one-piece valve body 1 can adapt to most operating conditions. The surface of the valve body 1 is coated with aerogel, which provides overall insulation. Aerogel has extremely low thermal conductivity, effectively insulating the internal measurement environment from the effects of external temperatures, ensuring measurement stability and accuracy. The orifice plate 14 can be secured to the retaining ring 13 and then welded using laser or argon arc welding. This reduces the potential for welding deformation while ensuring strength and metering accuracy. The spiral pressure-inducing tube 2 utilizes a spiral structure, effectively preventing direct impact of condensate on the multi-parameter transmitter. This increases the length and tortuosity of the fluid path, slowing the condensate flow rate and minimizing impact and potential damage. The needle valve 3 and three-valve assembly 4 ensure that steam is effectively controlled and protected before entering the multi-parameter transmitter 5, improving measurement accuracy and enhancing device safety by preventing the risk of accidental leaks and overpressure.

[0044] In one embodiment, the three-valve group 4 includes: a shell one; a high-pressure valve, a low-pressure valve and a balancing valve, wherein the high-pressure valve, the low-pressure valve and the balancing valve are installed in the shell one, the high-pressure valve is connected to the high-pressure hole of the multi-parameter transmitter 5, and the low-pressure valve is connected to the low-pressure hole of the multi-parameter transmitter 5. The balancing valve is located between the high-pressure valve and the low-pressure valve, and is used to balance the pressure of the high-pressure valve and the low-pressure valve.

[0045] In this embodiment, the high-pressure valve is installed within housing 1 and connected to the high-pressure port of the multi-parameter transmitter 5. The high-pressure valve's primary function is to control the flow of fluid on the high-pressure side, ensuring stable and controllable pressure on the high-pressure side during metering. The low-pressure valve is also installed within housing 1 and connected to the low-pressure port of the multi-parameter transmitter 5. The low-pressure valve is responsible for controlling the flow of fluid on the low-pressure side, ensuring that the pressure on the low-pressure side remains stable during metering. A balancing valve is strategically installed between the high-pressure and low-pressure valves. The balancing valve's core function is to balance the pressure difference between the high-pressure and low-pressure valves, ensuring that the pressures on both sides reach a relatively balanced state during metering, thereby improving metering accuracy and stability. Through the coordinated operation of the high-pressure, low-pressure, and balancing valves, the three-valve assembly 4 provides a precise and stable pressure control environment for the continuous gaseous mixed-phase metering device. This design not only improves metering accuracy but also ensures the stability and reliability of the device during operation. The multi-parameter transmitter 5 can sense and transmit these pressure changes in real time, providing strong support for subsequent data processing and control.

[0046] In one embodiment, the multi-parameter transmitter 5 includes: a shell 2, which is provided with a high-pressure hole and a low-pressure hole, and the high-pressure hole and the low-pressure hole are connected to the three-valve group 4; a differential pressure sensor built into the shell 2, and the differential pressure sensor is used to measure the pressure difference between two different points; a circuit board, which is electrically connected to the differential pressure sensor, and is used to process the signal collected by the differential pressure sensor, and the circuit board is provided with a voltage stabilization compensation and mathematical model module.

[0047] In this embodiment, housing 2 is the external protective structure of the multi-parameter transmitter 5. It is sturdy and durable, and can withstand interference and damage from the external environment. Housing 2 is provided with a high-pressure port and a low-pressure port. These two ports are respectively connected to the high-pressure valve and low-pressure valve in the three-valve group 4, providing a stable pressure input for the differential pressure sensor. The differential pressure sensor is the core component of the multi-parameter transmitter 5. The differential pressure sensor is built into housing 2 and can accurately measure the pressure difference between two different points (i.e., the high-pressure port and the low-pressure port). The differential pressure sensor has high precision, high stability, and high reliability, which can ensure the accuracy of the measurement results. The circuit board is electrically connected to the differential pressure sensor. It is responsible for processing the pressure signal collected by the differential pressure sensor and can amplify, filter, convert, and other processing to ensure the accuracy and stability of the output signal. The processed signal can be transmitted to the host computer or other display and recording equipment via wired or wireless means, facilitating real-time monitoring and data analysis by the user. Through the coordinated operation of housing 2, the differential pressure sensor, and the circuit board, the multi-parameter transmitter 5 achieves accurate measurement and signal processing of the pressure difference in the gas phase mixed continuous metering device. This design not only improves measurement accuracy but also enhances the stability and reliability of the device, providing users with a more convenient and efficient measurement solution. In electronic circuits, voltage stabilization and compensation and mathematical model modules are often used to stabilize voltage, ensuring proper functioning of the circuit despite voltage fluctuations. In measurement equipment, stable voltage is crucial for ensuring measurement accuracy. Unstable voltage can lead to unstable output signals from differential pressure sensors, affecting the accuracy of measurement results.

[0048] In one embodiment, the multi-parameter transmitter 5 further includes: a pressure sensor built into the second housing, the circuit board is electrically connected to the pressure sensor, and the pressure sensor is used to measure the pressure inside the second housing.

[0049] In this embodiment, the pressure sensor built into the second housing primarily measures the pressure within the second housing. This measurement can be used to monitor the internal operating status of the device, ensuring it operates within a safe pressure range, or to provide additional data points to support multi-parameter measurement requirements.

[0050] In one embodiment, the multi-parameter transmitter 5 further includes: a temperature sensor installed on the second housing, the circuit board is electrically connected to the temperature sensor, and the temperature sensor is used to measure the temperature of the second housing.

[0051] In this embodiment, a temperature sensor is also installed on housing 2. This temperature sensor is used to measure the temperature of housing 2. This means that it can directly contact and measure the temperature of housing 2. This design ensures accurate and real-time temperature measurement. By adding a temperature sensor, the multi-parameter transmitter can now simultaneously measure and transmit more physical quantities, including temperature and pressure.

[0052] In one embodiment, the multi-parameter transmitter 5 further includes: a display screen, the circuit board is electrically connected to the display screen, and the display screen is used to display the data collected by the differential pressure sensor.

[0053] In this embodiment, the multi-parameter transmitter 5 now includes a display screen electrically connected to the circuit board. This design allows users to view measurement data directly on the transmitter, without the need for an additional display device or data reader. The display screen's primary function is to display data collected by the differential pressure sensor. This means users can monitor differential pressure values ​​at any time without having to access this information through a remote system or additional instrumentation. Users can quickly understand the device's operating status and measurement data without specialized training or complex setup. The display screen updates differential pressure data in real time, which is crucial for industrial applications that require immediate feedback. Users can quickly respond to any anomalies or changes, ensuring system stability and safety. Multi-parameter transmitters with display screens are particularly suitable for scenarios requiring on-site monitoring and immediate data feedback. For example, in the oil and gas industry, chemical process control, water treatment systems, and other fields, operators can rely on the display screen to directly monitor the device's operating status. Notably, this display screen not only displays differential pressure data but can also be configured to display data collected by other sensors (such as temperature sensors, pressure sensors, etc.). This allows users to access all critical measurement information on a single screen.

[0054] In one embodiment, Figure 1 、 Figure 2 and Figure 3 As shown, the vapor mixed-phase continuous metering device also includes: a column 6, the multi-parameter transmitter 5, the three-valve group 4, the needle valve 3, the two spiral pressure-inducing tubes 2 and the valve body 1 are distributed in sequence, and the spiral pressure-inducing tubes 2 and the valve body 1 are both fixed to the column 6.

[0055] In this embodiment, the multi-parameter transmitter 5 , the three-valve group 4 , the needle valve 3 , the two spiral pressure-inducing tubes 2 and the valve body 1 can be integrated and installed in one body through the column 6 .

[0056] In one embodiment, Figure 1 、 Figure 2 and Figure 3 As shown, one end of the column 6 is arranged in an arc surface and is fixed to the side wall of the valve body 1 .

[0057] In this embodiment, one end of the column 6 is configured to be an arc surface, which can improve the firmness and reliability of the installation between the column 6 and the valve body 1 .

[0058] In one embodiment, Figure 1 、 Figure 2 and Figure 3 As shown, the vapor mixed-phase continuous metering device further includes: a fixing component 7 , which is disposed on the column 6 , and is used to fix the other end of the spiral pressure-inducing tube 2 to the column 6 .

[0059] In this embodiment, the other end of the spiral pressure-inducing tube 2 can be fixed to the column 6 by using the fixing assembly 7 to achieve the installation of the spiral pressure-inducing tube 2.

[0060] In one embodiment, Figure 3 As shown, the fixing assembly 7 includes: a threaded rod 71, the outer wall of the threaded rod 71 is provided with two limit blocks 72, and the two limit blocks 72 are provided with two arc grooves 721 on the sides facing each other; the outer wall of the other end of the spiral pressure-inducing tube 2 is arranged in the two arc grooves 721 facing each other; a nut 73, the nut 73 is threadedly connected to the outer wall of the threaded rod 71, and the nut 73 is used to press the two limit blocks 72 tightly together.

[0061] In this embodiment, the threaded rod 71 is the primary support structure of the fixing assembly 7. Its outer wall is threaded for threaded connection with the nut 73. The length and diameter of the threaded rod 71 can be adjusted according to actual needs to ensure sufficient strength and stability. The stopper 72 is sleeved on the outer wall of the threaded rod 71 and has two facing sides, each of which is provided with two arcuate grooves 721. The arcuate grooves 721 are designed to fit tightly against the outer wall of the spiral pressure-inducing tube 2, thereby providing stable support and fixation. The two stoppers 72 are pressed together by the nut 73, further enhancing the fixation effect. The shape and size of the arcuate grooves 721 match the outer wall of the spiral pressure-inducing tube 2 to ensure good contact and fixation. The nut 73 is threaded onto the outer wall of the threaded rod 71, and its position on the threaded rod 71 can be adjusted by rotating the nut 73. The main function of the nut 73 is to press the two stoppers 72 together, thereby fixing the other end of the spiral pressure-inducing tube 2. When the nut 73 is tightened, it moves downward along the threaded rod 71 and gradually presses the two limit blocks 72 together. In this process, the other end of the spiral pressure-inducing tube 2 is tightly clamped in the arc groove 721 of the two limit blocks 72, thereby achieving a stable fixing effect.

[0062] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0063] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0064] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A vapor mixed phase continuous metering device, characterized in that: It includes: A valve body (1), wherein the valve body (1) is integrally forged, the outer wall of the valve body (1) is sprayed with aerogel, the end face of the valve body (1) is coaxially provided with two end holes (11), and the side wall of the valve body (1) is provided with two side holes (12), a limit ring (13) is extended inside the valve body (1), and the limit ring (13) is welded with an orifice plate (14), and the orifice plate (14) is located between the two side holes (12); Two spiral pressure-inducing tubes (2), one end of each spiral pressure-inducing tube (2) is connected to the corresponding side hole (12), and the other end thereof is provided with a needle valve (3), and the two needle valves (3) are connected to a three-valve group (4); A multi-parameter transmitter (5), the multi-parameter transmitter (5) is connected to the three-valve group (4).

2. The vapor mixed phase continuous metering device according to claim 1, characterized in that: The three-valve group (4) includes: Shell 1; A high-pressure valve, a low-pressure valve and a balancing valve, wherein the high-pressure valve, the low-pressure valve and the balancing valve are installed in the housing 1, the high-pressure valve is connected to the high-pressure hole of the multi-parameter transmitter (5), the low-pressure valve is connected to the low-pressure hole of the multi-parameter transmitter (5), and the balancing valve is located between the high-pressure valve and the low-pressure valve, and is used to balance the pressure of the high-pressure valve and the low-pressure valve.

3. The vapor mixed phase continuous metering device according to claim 1, characterized in that: The multi-parameter transmitter (5) comprises: Shell 2, wherein the shell 2 is provided with a high-pressure hole and a low-pressure hole, and the high-pressure hole and the low-pressure hole are in communication with the three-valve group (4); A differential pressure sensor built into the second housing, the differential pressure sensor being used to measure the pressure difference between two different points; A circuit board is electrically connected to the differential pressure sensor, the circuit board is used to process the signal collected by the differential pressure sensor, and the circuit board is provided with a voltage stabilization compensation and mathematical model module.

4. The vapor mixed phase continuous metering device according to claim 3, characterized in that: The multi-parameter transmitter (5) further comprises: A pressure sensor is built into the second housing, the circuit board is electrically connected to the pressure sensor, and the pressure sensor is used to measure the pressure inside the second housing.

5. The vapor mixed phase continuous metering device according to claim 3, characterized in that: The multi-parameter transmitter (5) further comprises: A temperature sensor is installed on the second housing, the circuit board is electrically connected to the temperature sensor, and the temperature sensor is used to measure the temperature of the second housing.

6. The vapor mixed phase continuous metering device according to claim 3, characterized in that: The multi-parameter transmitter (5) further comprises: A display screen, wherein the circuit board is electrically connected to the display screen, and the display screen is used to display the data collected by the differential pressure sensor.

7. The vapor mixed phase continuous metering device according to claim 1, characterized in that: The vapor mixed phase continuous metering device further comprises: The column (6), the multi-parameter transmitter (5), the three-valve group (4), the needle valve (3), the two spiral pressure-inducing tubes (2) and the valve body (1) are sequentially spaced apart, and the spiral pressure-inducing tubes (2) and the valve body (1) are both fixed to the column (6).

8. The vapor mixed phase continuous metering device according to claim 7, characterized in that: One end of the column (6) is arranged in an arc shape and is fixedly attached to the side wall of the valve body (1).

9. The vapor mixed phase continuous metering device according to claim 7, characterized in that: The vapor mixed phase continuous metering device further comprises: A fixing component (7) is provided on the column (6), and the fixing component (7) is used to fix the other end of the spiral pressure-inducing tube (2) to the column (6).

10. The vapor mixed phase continuous metering device according to claim 9, characterized in that: The fixing assembly (7) comprises: A threaded rod (71), wherein the outer wall of the threaded rod (71) is provided with two limit blocks (72), and two arc-shaped grooves (721) are provided on the sides facing each other of the two limit blocks (72); The outer wall of the other end of the spiral pressure-inducing tube (2) is arranged in the two arc-shaped grooves (721) facing each other; A nut (73) is threadedly connected to the outer wall of the threaded rod (71), and the nut (73) is used to press the two limit blocks (72) into a close fit.

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