Float flowmeter suitable for high pressure

Abstract

The float flowmeter comprises a lower flange, an upper flange, a pressure-bearing pipe and a protective pipe, wherein the pressure-bearing pipe and the protective pipe are vertically arranged between the lower flange and the upper flange; the outer side face of the pressure-bearing pipe is sleeved with a protection pipe. A floater is arranged in the pressure-bearing pipe; an air inlet is formed in the lower flange, an air outlet is formed in the flange, and the air inlet and the air outlet are in sealed connection and communication with the lower end and the upper end of the pressure-bearing pipe respectively; and the lower flange and the upper flange are hermetically connected with the lower end and the upper end of the pressure-bearing pipe respectively. At least three adjusting supporting rods are vertically arranged between the lower flange and the upper flange and arranged on the periphery of the protection pipe. And the device is suitable for a 0-5MPa high-pressure environment.

Description

Technical Field

[0001] The utility model belongs to the technical field of flow meters, and particularly relates to a high-pressure float flow meter applicable to 0 - 5 MPa. Background Technique

[0002] A float flow meter is a commonly used flow measurement instrument in industrial production, which has the advantages of simple structure, easy maintenance, and affordable price. Its working principle is based on the principle of hydrostatic balance, and the flow signal is intuitively displayed by the up and down movement of the float. Structurally, it is an indicating instrument that directly observes the fluid flow in the pipeline through the conical glass tube engraved with flow scales and the position height of the float inside the tube, and is often used to measure the flow of non-corrosive gases and other media.

[0003] However, the current flow meter has a simple structure, and in addition, the glass tube material of the flow meter has low strength and is not suitable for high-pressure environments. This application relates to a float flow meter applicable to a high pressure of 0 - 5 MPa. Summary of the Invention

[0004] The utility model aims to solve the deficiencies in the prior art and proposes a float flow meter applicable to high pressure.

[0005] To achieve the above functions, the utility model adopts the following technical solutions:

[0006] A float flow meter applicable to high pressure includes a lower flange, an upper flange, and a pressure-bearing pipe and a protective pipe vertically installed between the two;

[0007] The outer side of the pressure-bearing pipe is sleeved with a protective pipe;

[0008] A float is arranged inside the pressure-bearing pipe;

[0009] An air inlet is arranged on the lower flange, and an air outlet is arranged on the upper flange. The air inlet and the air outlet are respectively sealed and connected to the lower end and the upper end of the pressure-bearing pipe and are communicated;

[0010] The lower flange and the upper flange are respectively sealed and connected to the lower end and the upper end of the pressure-bearing pipe;

[0011] At least three adjusting support rods are also vertically arranged between the lower flange and the upper flange, and are respectively arranged on the periphery of the protective pipe.

[0012] Further, the lower flange and the upper flange at least contain a pair of matching installation planes, and installation fixing holes are respectively arranged on the installation planes.

[0013] Further, axial sealing rings are respectively arranged between the installation holes of the lower flange and the upper flange and the pressure-bearing pipe for sealed connection;

[0014] Radial sealing rings are respectively arranged between the air inlet of the lower flange and the air outlet of the upper flange and the lower end and the upper end of the pressure-bearing pipe for sealing.

[0015] Further, the air inlet of the lower flange and the air outlet of the upper flange adopt a threaded structure.

[0016] Further, the protective tube is made of transparent PTFE tube.

[0017] The pressure-bearing tube is the glass tube in the rotameter.

[0018] Axial sealing rings are respectively arranged between the mounting holes of the lower flange and the upper flange and the pressure-bearing tube for sealed connection; the air inlet on the lower flange and the air outlet on the upper flange are respectively communicated with the lower end and the upper end of the pressure-bearing tube and are radially sealed and connected; the two seals of radial and axial directions ensure the sealing of the pressure-bearing tube.

[0019] The protective tube around the pressure-bearing tube mainly ensures that no fragments fly out when the pressure-bearing tube accidentally breaks.

[0020] At least three adjusting support rods are vertically arranged between the lower flange and the upper flange, and are respectively arranged on the periphery of the protective tube. It can be seen from the figure that there are [number of] adjusting support rods. Through the connecting screws, the adjusting support rods connect the upper flange and the lower flange. By adjusting the tightness of the connecting screws, the sealing material is pressed to ensure the axial sealing of the flowmeter.

[0021] In summary, the utility model strengthens the overall pressure-bearing capacity by sleeving a protective tube on the outer side of the pressure-bearing tube of the rotameter, and vertically installing at least three adjusting support rods between the lower flange and the upper flange on the periphery of the protective tube, so that it is applicable to a certain high-pressure environment. The radial and axial double-sealing structure between the pressure-bearing tube and the lower flange and the upper flange can accurately display the flow rate. When the flowmeter composed of the pressure-bearing tube and the float selects a small-flow model, it can be applied to precision equipment under the high-pressure environment of 0 - 5 MPa gas. Brief Description of the Drawings

[0022] Figure 1 is the structural schematic diagram of the utility model;

[0023] Figure 2 is the schematic diagram of the installation position of the adjusting support rod on the top surface of the upper flange in the utility model. Detailed Description of the Preferred Embodiment

[0024] Figure 1 and Figure 2 In [reference figures], 1. lower flange, 2. float, 3. adjusting support rod, 4. pressure-bearing tube, 5. protective tube, 6. upper flange, 7. connecting screw, 8. air inlet, 9. mounting and fixing hole, 10. air outlet.

[0025] As Figure 1 and Figure 2As shown, a rotameter applicable to high pressure includes a lower flange 1, an upper flange 6, and a pressure-bearing pipe 4 and a protective pipe 5 vertically installed between the two;

[0026] The outer side surface of the pressure-bearing pipe 4 is sleeved with a protective pipe 5;

[0027] A float 2 is arranged inside the pressure-bearing pipe 4;

[0028] Figure 1 In the shown embodiment, corresponding installation holes are respectively opened on the upper end surface of the lower flange 1 and the lower end surface of the upper flange 6, and both ends of the pressure-bearing pipe 4 and the protective pipe 5 are installed between the lower flange 1 and the upper flange 6 through the installation holes on the upper end surface of the lower flange 1 and the lower end surface of the upper flange 6.

[0029] An air inlet 8 is arranged on the lower flange 1, and an air outlet 10 is arranged on the upper flange 6. The air inlet 8 and the air outlet 10 are respectively and hermetically connected and communicated with the lower end and the upper end of the pressure-bearing pipe 4; Figure 1 In the shown embodiment, the air inlet 8 and the air outlet 10 are perpendicular to the center lines of the installation holes on the upper end surface of the lower flange 1 and the lower end surface of the upper flange 6. Of course, it is also feasible to be not perpendicular but at an oblique angle. No specific limitation is made here.

[0030] The lower flange 1 and the upper flange 6 are respectively and hermetically connected to the lower end and the upper end of the pressure-bearing pipe 4;

[0031] At least three adjusting support rods 3 are also vertically arranged between the lower flange 1 and the upper flange 6, and are respectively arranged on the periphery of the protective pipe 5.

[0032] Furthermore, the lower flange 1 and the upper flange 6 at least contain a pair of matching installation planes, and installation fixing holes 9 are respectively arranged on the installation planes.

[0033] Furthermore, axial sealing rings are respectively arranged between the installation holes of the lower flange 1 and the upper flange 6 and the pressure-bearing pipe 4 for sealing connection;

[0034] Radial sealing rings are respectively arranged between the air inlet 8 of the lower flange 1 and the air outlet 10 of the upper flange 6 and the lower end and the upper end of the pressure-bearing pipe 4 for sealing.

[0035] Furthermore, the air inlet 8 of the lower flange 1 and the air outlet 10 of the upper flange 6 adopt a threaded structure.

[0036] Furthermore, the protective pipe 5 adopts a transparent PTFE pipe.

[0037] The pressure-bearing pipe 4 is the glass tube in the rotameter.

[0038] Axial sealing rings are respectively provided between the mounting holes of the lower flange 1 and the upper flange 6 and the pressure-bearing pipe 4 for sealed connection; the air inlet 8 on the lower flange 1 and the air outlet 10 on the upper flange 6 are respectively communicated between the lower end and the upper end of the pressure-bearing pipe 4 and radially sealed; the two seals, radial and axial, ensure the sealing of the pressure-bearing pipe 4.

[0039] The protective pipe 5 around the pressure-bearing pipe 4 mainly ensures that there is no splashing of fragments when the pressure-bearing pipe 4 accidentally breaks.

[0040] At least three adjusting support rods 3 are also vertically provided between the lower flange 1 and the upper flange 6, and are respectively arranged on the periphery of the protective pipe 5. Figure 2 In the illustrated embodiment, it can be seen that 4 adjusting support rods 3 are provided between the lower flange 1 and the upper flange 6, and 4 mounting holes corresponding to the upper and lower parts of the support rods 3 are respectively provided on the upper end surface of the lower flange 1 and the lower end surface of the upper flange 6. The adjusting support rods 3 can be connected by connecting screws 7 provided on the lower end surface of the lower flange 1, the upper end surface of the upper flange 6 and concentric with the adjusting support rods 3. Through the connecting screws 7, the adjusting support rods 3 connect the upper flange 6 and the lower flange 1. By adjusting the tightness of the connecting screws 7, the sealing material is pressed to ensure the axial sealing of the flowmeter.

[0041] The air inlet 8 and the air outlet 10 of the present utility model adopt a threaded structure, which ensures the connection reliability and avoids air leakage.

[0042] The present utility model can be fixed on the panel through the mounting and fixing holes 9 on the upper flange 6 and the lower flange 1.

[0043] Due to the limitations of the technical solution, there are also certain limitations on the high pressure applied by the present utility model. More specifically, it is applicable to the high-pressure gas environment under 0 - 5 MPA. The selection range of the rotameter is 0 - 2500 ml / min.

[0044] This embodiment does not impose any formal restrictions on the shape, material, structure, etc. of the present utility model. Any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model all belong to the protection scope of the technical solution of the present utility model.

Claims

1. A float flow meter suitable for high pressure, characterized by: It comprises a lower flange (1), an upper flange (6), and a pressure-bearing pipe (4) and a protective pipe (5) vertically installed therebetween; A protective tube (5) is sleeved on the outer side of the pressure-bearing tube (4); A float (2) is provided in the pressure-bearing pipe (4); An air inlet (8) is provided on the lower flange (1), and an air outlet (10) is provided on the upper flange (6), wherein the air inlet (8) and the air outlet (10) are respectively sealed and connected to the lower end and the upper end of the pressure-bearing pipe (4) and communicate with each other; The lower flange (1) and the upper flange (6) are respectively sealedly connected to the pressure pipe (4); At least three adjustment support rods (3) are vertically arranged between the lower flange (1) and the upper flange (6), and are respectively arranged on the periphery of the protection tube (5).

2. The float flowmeter suitable for high pressure according to claim 1, characterized in that: The lower flange (1) and the upper flange (6) at least have a matching mounting plane, and mounting fixing holes (9) are respectively provided on the mounting planes.

3. A float flowmeter suitable for high pressure according to claim 1, characterized in that: The pressure-bearing pipe (4) is provided with axial sealing rings between the mounting holes of the lower flange (1) and the upper flange (6) and the pressure-bearing pipe (4) for sealing connection; the air inlet (8) of the lower flange (1) and the air outlet (10) of the upper flange (6) are provided with radial sealing rings for sealing at the lower end and the upper end of the pressure-bearing pipe (4) respectively.

4. A float flowmeter suitable for high pressure according to claim 1, characterized in that: The air inlet (8) of the lower flange (1) and the air outlet (10) of the upper flange (6) are threaded structures.

5. A float flowmeter suitable for high pressure according to claim 1, characterized in that: The protective tube (5) is made of a transparent polytetrafluoroethylene tube.

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