A composite combination structure for a mass flowmeter housing

Abstract

The utility model discloses a kind of composite combination structure for mass flowmeter shell, it is related to the shell structure field of mass flowmeter, including outer protective cover, heat shield is installed in the inner chamber of outer protective cover, buffer pressure-reducing layer is installed in the inner chamber of heat shield, mass flowmeter body is installed in the inner chamber of buffer pressure-reducing layer, another end of feed pipe is installed with transition pipe, another end of transition pipe is installed with pretreatment pipe.The utility model said a kind of composite combination structure for mass flowmeter shell, by the fluid guide vane and guide spiral blade of being set, the state of fluid flow can be optimized in cooperation, fluid enters between mass flowmeter body can be handled first through fluid guide vane, to form stable flow field, further eliminate vortex by guide spiral blade, so it can greatly reduce the noise interference generated when fluid flow, so the purity of mass flowmeter body measurement signal can be improved.

Description

Technical Field

[0001] This utility model relates to the field of housing structure for mass flow meters, and particularly to a composite structure for a mass flow meter housing. Background Technology

[0002] As a key device for high-precision fluid measurement in industrial processes, the accuracy of mass flow meters is highly susceptible to the influence of external environment and internal flow field conditions. In existing technologies, mass flow meters are typically directly exposed to the working environment or protected by a simple single-layer housing. However, under high-temperature conditions or with drastic temperature fluctuations, external heat sources can be conducted through the housing to the internal measuring unit, inducing thermal stress and causing zero-point drift in the sensor, severely affecting the stability and accuracy of the measurement. Simultaneously, the fluid pressure in the pipeline system is not absolutely stable; frequent pressure peaks and fluctuations directly affect the flow meter body. This mechanical shock also interferes with the normal operation of the sensor, introducing measurement errors.

[0003] Furthermore, the flow characteristics of the fluid itself are also a significant factor affecting measurement accuracy. When fluid enters the flowmeter measuring tube in a non-ideal state (such as the presence of eddies or turbulence), it generates significant flow noise. This noise masks weak, true measurement signals, leading to a decrease in the signal-to-noise ratio and compromising the purity of the measurement results. Although some flow-guiding structures exist to improve the flow field, their effectiveness is limited, often failing to fully eliminate flow interference before the fluid enters the core measuring unit.

[0004] Therefore, it is necessary to propose a composite structure for the housing of a mass flow meter to solve the above problems. Utility Model Content

[0005] The main objective of this invention is to provide a composite structure for the housing of a mass flow meter, which can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A composite structure for a mass flow meter housing includes an outer protective cover, an inner cavity of which is fitted with a heat insulation shield, an inner cavity of which is fitted with a buffer pressure reducing layer, an inner cavity of which is fitted with a mass flow meter body, an outer wall of the outer protective cover fitted with a feed pipe, a transition pipe fitted with the other end of the feed pipe, and a pretreatment pipe fitted with the other end of the transition pipe.

[0007] Preferably, heat dissipation fins are symmetrically installed on both sides of the outer wall of the outer protective cover. The outer protective cover is teardrop-shaped. The buffer pressure reduction layer is composed of corrugated pipes. The inner cavity of the buffer pressure reduction layer is filled with inert gas. A drain pipe is installed at the other end of the outer protective cover. The drain pipe, pretreatment pipe, transition pipe and feed pipe are all connected to the inner cavity of the mass flow meter body.

[0008] Preferably, the bottom of the outer protective cover is equipped with a mounting base, the bottom of the mounting base is movably connected to a base, the top of the base is symmetrically equipped with fixing rods, the two sides of both ends of the mounting base are symmetrically provided with movable grooves, a lead screw is rotatably connected in the inner cavity of one of the movable grooves, and guide rods are installed in the inner cavities of the other movable grooves.

[0009] Preferably, the fixed rods are movably connected to the inner cavity of the movable groove on the side near the mounting base. The top of one side of the fixed rod is threaded to the outer wall of the lead screw, and the tops of the remaining fixed rods are sleeved on the outer wall of the guide rod. The outer wall of the mounting base is rotatably connected to a handle, and the bottom of the handle is installed on the top of the lead screw.

[0010] Preferably, the transition tube is tapered, and a fluid guide vane is installed in the inner cavity of the pretreatment tube. The fluid guide vane consists of multiple involute blades, which pre-forms a stable flow field before the fluid enters the mass flow meter body, thereby reducing the generation of eddies and flow noise.

[0011] Preferably, a flow-guiding spiral blade is installed in the inner cavity of the feed pipe, and the flow-guiding spiral blade is used to optimize the flow field distribution of the fluid.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The mass flow meter housing uses a composite structure. Through the setting of heat dissipation fins and heat insulation shielding layer, it can effectively block heat conduction and convection, improve the working condition of the mass flow meter body, minimize the impact of thermal stress, and significantly improve the zero-point stability and measurement accuracy of the mass flow meter body. Through the setting of buffer pressure reduction layer, it can effectively absorb pressure peaks and fluctuations, and further improve the stability of the mass flow meter body during operation.

[0013] The mass flow meter housing uses a composite structure. Through the design of fluid guide vanes and flow guide spiral blades, the fluid flow state can be optimized in a coordinated manner. Before entering the mass flow meter body, the fluid is first processed by the fluid guide vanes to form a stable flow field. Then, the flow guide spiral blades further eliminate eddies. Therefore, the noise interference generated during fluid flow can be significantly reduced, thereby improving the purity of the measurement signal of the mass flow meter body.

[0014] The mass flow meter housing uses a composite structure. Through the mounting base, it can be raised by rotating the handle, thus the height of the outer protective cover can be adjusted. In actual use, it is convenient to connect with the pipelines and equipment that need to be metered. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the outer protective cover of this utility model; Figure 3 This is a schematic diagram of the structure of the mounting base of this utility model; Figure 4 This is a cross-sectional view of the pretreatment tube of this utility model.

[0016] In the diagram: 1. Outer protective cover; 2. Heat dissipation fins; 3. Heat insulation shielding layer; 4. Buffer and pressure reduction layer; 5. Mass flow meter body; 6. Mounting base; 7. Fixing rod; 8. Base; 9. Movable groove; 10. Guide rod; 11. Lead screw; 12. Rotary handle; 13. Feed pipe; 14. Pretreatment pipe; 15. Transition pipe; 16. Fluid guide vane; 17. Guide spiral blade. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0018] like Figures 1-4As shown, a composite structure for a mass flow meter housing includes an outer protective cover 1. A heat insulation shielding layer 3 is installed inside the inner cavity of the outer protective cover 1. A buffer pressure reducing layer 4 is installed inside the inner cavity of the heat insulation shielding layer 3. The mass flow meter body 5 is installed inside the inner cavity of the buffer pressure reducing layer 4. A feed pipe 13 is installed at one end of the outer wall of the outer protective cover 1, and a transition pipe 15 is installed at the other end of the feed pipe 13. A pretreatment pipe 14 is installed at the other end of the transition pipe 15. Heat dissipation fins 2 are symmetrically installed on both sides of the outer wall of the outer protective cover 1. The outer protective cover 1 is teardrop-shaped. The buffer pressure reducing layer 4 is composed of corrugated pipes and its inner cavity is filled with inert gas. A drain pipe is installed at the other end of the outer protective cover 1. The drain pipe, pretreatment pipe 14, transition pipe 15, and feed pipe 13 are all connected to the inner cavity of the mass flow meter body 5. A mounting base 6 is installed at the bottom of the outer protective cover 1. A base 8 is movably connected to the bottom of the mounting base 6. Four... The mounting base 6 is symmetrically equipped with fixed rods 7. The mounting base 6 has symmetrically opened movable grooves 9 on both sides. A lead screw 11 is rotatably connected to the inner cavity of one movable groove 9, and guide rods 10 are installed in the inner cavities of the remaining movable grooves 9. The fixed rods 7 are rotatably connected to the inner cavity of the movable grooves 9 on the side closest to the mounting base 6. The top of the side of one fixed rod 7 is threaded to the outer wall of the lead screw 11, and the top of the side of the remaining fixed rods 7 is sleeved on the outer wall of the guide rods 10. A handle 12 is rotatably connected to the outer wall of the mounting base 6, and the bottom of the handle 12 is installed on the top of the lead screw 11. The transition tube 15 is tapered. A fluid guide vane 16 is installed in the inner cavity of the pretreatment tube 14. The fluid guide vane 16 consists of multiple involute blades, which pre-form a stable flow field before the fluid enters the mass flow meter body 5 to reduce the generation of eddies and flow noise. A guide spiral blade 17 is installed in the inner cavity of the feed tube 13 to optimize the flow field distribution of the fluid. The heat dissipation fins 2 and the heat insulation shielding layer 3 effectively block heat conduction and convection, improve the working state of the mass flow meter body 5, minimize the impact of thermal stress, and significantly improve the zero-point stability and measurement accuracy of the mass flow meter body 5. The buffer pressure reduction layer 4 effectively absorbs pressure peaks and fluctuations, further improving the stability of the mass flow meter body 5 during operation. The fluid guide vanes 16 and the guide spiral blades 17 work together to optimize the fluid flow state. The fluid entering the mass flow meter body 5 is first processed by the fluid guide vanes 16 to form a stable flow field, and then the guide spiral blades 17 further eliminate eddies. Therefore, the noise interference generated during fluid flow can be greatly reduced, thus improving the purity of the measurement signal of the mass flow meter body 5. The mounting base 6 can be raised by rotating the handle 12, so the height of the outer protective cover 1 can be adjusted, making it convenient to connect to the pipes and equipment that need to be measured in actual use.

[0019] It should be noted that this utility model is a composite structure for a mass flow meter housing. When in use, the base 8 is placed in a suitable position, and the handle 12 is rotated to drive the lead screw 11 to rotate, so that the mounting base 6 can drive the outer protective cover 1 to adjust its height. The equipment to be measured is connected to the pretreatment pipe 14. The fluid will first pass through the fluid guide vane 16 in the inner cavity of the pretreatment pipe 14, and then enter the inner cavity of the feed pipe 13 through the transition pipe 15. At this time, it will pass through the guide spiral blade 17 in turn and enter the inner cavity of the mass flow meter body 5, at which point the fluid can be measured.

[0020] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A composite structure for a mass flow meter housing, comprising an outer protective cover (1), characterized in that: The outer protective cover (1) has a heat insulation shield layer (3) installed in its inner cavity, a buffer pressure reduction layer (4) installed in its inner cavity, a mass flow meter body (5) installed in its inner cavity, a feed pipe (13) installed at one end of the outer wall of the outer protective cover (1), a transition pipe (15) installed at the other end of the feed pipe (13), and a pretreatment pipe (14) installed at the other end of the transition pipe (15).

2. The composite assembly structure for a mass flow meter housing according to claim 1, characterized in that: The outer protective cover (1) has heat dissipation fins (2) symmetrically installed on both sides of its outer wall. The outer protective cover (1) is teardrop-shaped. The buffer pressure reduction layer (4) is composed of corrugated pipes. The inner cavity of the buffer pressure reduction layer (4) is filled with inert gas. The other end of the outer protective cover (1) is equipped with a drain pipe. The drain pipe, pretreatment pipe (14), transition pipe (15) and feed pipe (13) are all connected to the inner cavity of the mass flow meter body (5).

3. The composite assembly structure for a mass flow meter housing according to claim 1, characterized in that: The bottom of the outer protective cover (1) is equipped with a mounting base (6), and the bottom of the mounting base (6) is movably connected to a base (8). Fixing rods (7) are symmetrically installed around the top of the base (8). Movable grooves (9) are symmetrically opened on both sides of the mounting base (6). A lead screw (11) is rotatably connected in the inner cavity of one of the movable grooves (9), and guide rods (10) are installed in the inner cavities of the other movable grooves (9).

4. The composite assembly structure for a mass flow meter housing according to claim 3, characterized in that: The fixed rods (7) are movably connected to the inner cavity of the movable groove (9) on the side near the mounting base (6). The top of one side of the fixed rod (7) is threaded to the outer wall of the lead screw (11), and the top of the other fixed rods (7) are sleeved on the outer wall of the guide rod (10). The outer wall of the mounting base (6) is rotatably connected to a handle (12), and the bottom of the handle (12) is installed on the top of the lead screw (11).

5. The composite assembly structure for a mass flow meter housing according to claim 1, characterized in that: The transition tube (15) is tapered, and a fluid guide vane (16) is installed in the inner cavity of the pretreatment tube (14). The fluid guide vane (16) consists of multiple involute blades, which pre-form a stable flow field before the fluid enters the mass flow meter body (5) to reduce the generation of eddies and flow noise.

6. The composite assembly structure for a mass flow meter housing according to claim 1, characterized in that: The feed pipe (13) is equipped with a flow guide spiral blade (17) in its inner cavity, which is used to optimize the flow field distribution of the fluid.

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