Scalable vapor two-phase flow meter

Abstract

The utility model relates to flow measurement equipment technical field discloses telescopic steam two -phase flowmeter, including flowmeter main part, adjusting handle, the left end intercommunication of flowmeter main part has import pipeline, the right end intercommunication of flowmeter main part has export pipeline, the top of flowmeter main part is provided with measurement assembly, the left end intercommunication of import pipeline has telescopic pipe outer body, rotatory pipe is connected in telescopic pipe outer body, the inner wall fixed mounting of telescopic pipe outer body has inner nut baffle ring, inner nut baffle ring is screwed on rotatory pipe, through the rotation rotatory pipe can change rotatory pipe from telescopic pipe outer body the length that stretches out, and then adapt different pipeline condition (the interval between different pipeline connecting port), make and need not replace corresponding steam two -phase flowmeter.

Description

Technical Field

[0001] This utility model relates to the technical field of flow measurement equipment, specifically a retractable two-phase steam flow meter. Background Technology

[0002] Two-phase steam flow meters, as key equipment for measuring the flow parameters of two-phase steam, are widely used in industries such as power, chemical, and metallurgy. During on-site installation, the pipe laying length varies under different operating conditions, meaning the distance between the two pipe sections where the flow meter is to be installed differs.

[0003] In existing two-phase steam flow meters, the connecting pipes at both ends used to connect to the field pipelines are typically of fixed length, making it impossible to adjust the length according to the actual spacing of the field pipelines. This necessitates the use of two-phase steam flow meters with connecting pipes of different lengths to meet varying installation requirements. This not only increases equipment production and inventory management costs but also necessitates frequent replacement of flow meters of appropriate specifications during on-site installation, reducing installation efficiency and increasing the risk of installation errors due to specification mismatch, thus affecting the accuracy of flow measurement. Summary of the Invention

[0004] The purpose of this invention is to provide a retractable two-phase steam flow meter to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a retractable two-phase steam flow meter, comprising a flow meter body and an adjusting handle. The left end of the flow meter body is connected to an inlet pipe, and the right end of the flow meter body is connected to an outlet pipe. A measuring component is installed on the top of the flow meter body. The left end of the inlet pipe is connected to a telescopic outer body. A rotating pipe is rotatably connected inside the telescopic outer body. An inner nut retaining ring is fixedly installed on the inner wall of the telescopic outer body. The inner nut retaining ring is threaded onto the rotating pipe. The outer wall of the rotating pipe has an external thread that matches the flow meter body and the inner nut retaining ring. An adjusting disc is fixedly installed on the outer wall of the rotating pipe. An insertion hole is provided on the outer wall of the adjusting disc, and the insertion end of the adjusting handle matches the insertion hole.

[0006] Furthermore, the telescopic tube outer body includes an outer body right and an outer body left, which are connected together by welding.

[0007] Furthermore, a gap is left between the outer wall of the rotating tube and the inner wall of the telescopic tube, and the gap is filled with graphite filler.

[0008] Furthermore, a pressure cap is fixedly sleeved on the outer wall of the rotating tube, and an integrally formed protrusion is provided at the right end of the pressure cap. The protrusion extends into the gap between the outer body of the telescopic tube and the rotating tube, and the protrusion rests on the left side of the graphite filler.

[0009] Furthermore, clamp heads are welded to both the left end of the rotating tube and the right end of the outlet pipe.

[0010] Furthermore, the adjusting handle consists of a long handle and a cylindrical metal head, and the outer wall of the long handle is provided with anti-slip texture, and the outer wall of the flow meter body is provided with a flow direction mark.

[0011] Furthermore, the adjustment disk has multiple sockets, and the multiple sockets are arranged in a circumferential array on the outer surface of the adjustment disk.

[0012] Furthermore, a thermocouple connector is fixedly installed at the top of the outlet pipe, the thermocouple connector is close to the right end of the outlet pipe, and the connecting end of the thermocouple connector extends into the outlet pipe.

[0013] Furthermore, the flow meter body, inlet pipe, outlet pipe, and telescopic pipe are all covered with external insulation, and the external insulation is offset from the flow direction markings on the flow meter body.

[0014] Furthermore, the measuring component includes a mounting column, which is fixedly installed on the top of the flow meter body. A high-temperature shut-off valve, an instrument three-valve group, and a differential pressure transmitter are fixedly installed on the mounting column. Steam from the flow meter body enters the high-temperature shut-off valve through a pipeline. The top port of the high-temperature shut-off valve is connected to the bottom port of the instrument three-valve group. The bottom port of the differential pressure transmitter is connected to the top port of the instrument three-valve group. The flow meter body, the high-temperature shut-off valve, the instrument three-valve group, and the differential pressure transmitter form a steam circulation pipeline.

[0015] Compared with the prior art, the beneficial effects of this utility model are: By rotating the rotating tube, the length of the rotating tube extending from the main body of the telescopic tube can be changed, thereby changing the length of the entire telescopic connection pipe, and adapting to different pipeline conditions (the spacing between different pipeline connection ports), so that there is no need to replace the corresponding steam two-phase flow meter. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This utility model Figure 1 A structural schematic diagram of the front sectional view; Figure 3 This is a schematic diagram of the handle of this utility model; Figure 4This utility model Figure 1 A schematic diagram of the structure of the enlarged view at point A in the middle; Figure 5 This utility model Figure 2 A structural schematic diagram of the enlarged view at point B in the middle; Figure 6 This utility model Figure 2 A structural schematic diagram of the enlarged view at point C; Figure 7 This utility model Figure 1 A structural schematic diagram of the enlarged view at point D.

[0017] In the diagram: 1. Flow meter body; 101. Flow direction indicator; 2. Inlet pipe; 3. Outlet pipe; 4. Expansion pipe outer body; 401. Right outer body; 402. Left outer body; 5. Rotating pipe; 501. External thread; 6. Inner nut retaining ring; 7. Adjusting disc; 701. Insertion hole; 8. Clamp head; 9. Adjusting handle; 10. Pressure cap; 11. Thermocouple connector; 12. External insulation component; 13. Graphite packing; 14. Mounting column; 15. High temperature shut-off valve; 16. Instrument three-valve manifold; 17. Differential pressure transmitter. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Please see Figures 1-7This utility model provides a technical solution: a retractable two-phase steam flow meter, including a flow meter body 1 and an adjusting handle 9. The left end of the flow meter body 1 is connected to an inlet pipe 2, and the right end is connected to an outlet pipe 3. A measuring component is installed on the top of the flow meter body 1. The left end of the inlet pipe 2 is connected to a telescopic outer body 4. A rotating pipe 5 is rotatably connected inside the telescopic outer body 4. An inner nut retaining ring 6 is fixedly installed on the inner wall of the telescopic outer body 4. The inner nut retaining ring 6 is threaded onto the rotating pipe 5. The outer wall of the rotating pipe 5 has an external thread 501 that matches the inner nut retaining ring 6 and the flow meter body 1. An adjusting disc 7 is fixedly installed on the outer wall of the rotating pipe 5. The outer wall of the regulating disc 7 has an insertion hole 701. The insertion end of the regulating handle 9 matches the insertion hole 701. Steam is introduced into the flow meter body 1 through the inlet pipe 2. When the steam passes through the flow meter body 1, the measuring component set on the top of the flow meter body 1 measures the steam flow rate. The telescopic tube outer body 4 and the rotating tube 5 serve as telescopic connecting pipes. By simply rotating the rotating tube 5, the length of the rotating tube 5 extending from the telescopic tube outer body 4 can be changed, thereby changing the length of the entire telescopic connecting pipe. This allows for adaptation to different pipeline conditions (the spacing between different pipeline connection ports), eliminating the need to replace the corresponding steam two-phase flow meter.

[0020] The telescopic tube outer body 4 includes an outer body right 401 and an outer body left 402. The outer body right 401 and outer body left 402 are connected together by welding. The telescopic tube outer body 4 is set as a split type, which facilitates the installation of structures such as inner nut retaining ring 6 inside the telescopic tube outer body 4 during assembly.

[0021] A gap is left between the outer wall of the rotating pipe 5 and the inner wall of the telescopic pipe outer body 4, and the gap is filled with graphite filler 13. The graphite filler 13 is set to ensure the sealing between the telescopic pipe outer body 4 and the rotating pipe 5, and to prevent steam from leaking from the gap between the telescopic pipe outer body 4 and the rotating pipe 5.

[0022] A pressure cap 10 is fixedly sleeved on the outer wall of the rotating tube 5. An integrally formed protrusion is provided at the right end of the pressure cap 10, and the protrusion extends into the gap between the outer body 4 of the telescopic tube and the rotating tube 5. The protrusion is positioned on the left side of the graphite packing 13. The pressure cap 10 is provided to limit the graphite packing 13 and prevent the graphite packing 13 from leaking from the gap between the outer body 4 of the telescopic tube and the rotating tube 5.

[0023] Both the left end of the rotating pipe 5 and the right end of the outlet pipe 3 are welded with clamp heads 8, which are used to connect the external pipeline to the rotating pipe 5 and the outlet pipe 3.

[0024] The adjusting handle 9 consists of a long handle and a cylindrical metal head. The outer wall of the long handle is provided with anti-slip texture. When the user applies force to the adjusting handle 9, the anti-slip texture on the long handle can reduce the probability of the user's hand slipping. The outer wall of the flow meter body 1 is provided with a flow direction mark 101 to prevent the user from installing the retractable steam two-phase flow meter backwards during installation.

[0025] The adjustment disk 7 has multiple sockets 701, and the multiple sockets 701 are arranged in a circumferential array on the outer surface of the adjustment disk 7, so that the user will not be restricted in rotation due to a single socket 701 when making adjustments.

[0026] A thermocouple connector 11 is fixedly installed at the top of the outlet pipe 3. The thermocouple connector 11 is located near the right end of the outlet pipe 3, and the connecting end of the thermocouple connector 11 extends into the outlet pipe 3. The thermocouple connector 11 provides a standardized and reliable installation interface for the thermocouple (temperature sensor), enabling the thermocouple (temperature sensor) to accurately measure the outlet steam temperature and provide key data support for flow calculation, system control and equipment safety.

[0027] An external insulation component 12 is fitted around the flow meter body 1, inlet pipe 2, outlet pipe 3, and telescopic pipe outer body 4. The external insulation component 12 is offset from the flow direction mark 101 on the flow meter body 1. The external insulation component 12 can reduce heat loss and maintain the temperature and pressure of steam in the inlet pipe 2 and outlet pipe 3 sections, ensuring that the gas-liquid two-phase ratio meets the working conditions of the flow meter and ensuring accurate measurement data.

[0028] The measuring assembly includes a mounting post 14, which is fixedly mounted on the top of the flowmeter body 1. A high-temperature shut-off valve 15, a three-valve manifold 16, and a differential pressure transmitter 17 are fixedly mounted on the mounting post 14. Steam from the flowmeter body 1 enters the high-temperature shut-off valve 15 through a pipeline. The top port of the high-temperature shut-off valve 15 is connected to the bottom port of the three-valve manifold 16, and the bottom port of the differential pressure transmitter 17 is connected to the top port of the three-valve manifold 16. The flowmeter body 1, the high-temperature shut-off valve 15, the three-valve manifold 16, and the differential pressure transmitter 17 form a steam circulation pipeline. The high-temperature shut-off valve 15 adapts to the working conditions, the instrument three-valve group 16 protects the core instrument, and the differential pressure transmitter 17 completes the signal conversion. Then, the closed-loop pipeline ensures the continuity of measurement, and finally achieves accurate, stable and safe measurement of the steam pressure difference in the flow meter body 1. The steam inside the flow meter body 1 enters the high-temperature shut-off valve 15 through the pipeline. The steam passing through the high-temperature shut-off valve 15 flows into the instrument three-valve group 16 through the sealed pipeline, and then flows into the measuring chamber of the differential pressure transmitter 17 through the instrument three-valve group 16. The differential pressure transmitter 17 measures the steam pressure.

[0029] Working principle: In use, first measure the distance between the two connection ports of the external pipe, then insert the insertion end of the adjusting handle 9 into the socket 701, and then pull the adjusting handle 9 to drive the adjusting disc 7 to rotate. The rotation of the adjusting disc 7 drives the rotating pipe 5 to rotate. Under the axial force of the inner nut retaining ring 6, the rotating pipe 5 moves relative to the outer body 4 of the telescopic pipe, thereby changing the length of the entire telescopic connection pipe, so that the clamp head 8 on the rotating pipe 5 and the clamp head 8 on the outlet pipe 3 can be connected to the two connection ports respectively. Steam enters the outer body 4 of the telescopic pipe from the rotating pipe 5, then enters the inlet pipe 2, and then enters the flow meter body 1. When the steam flows through the flow meter body 1, the flow rate is measured by the flow meter body 1 and the measuring components on the flow meter body 1, and then enters the outlet pipe 3 from the flow meter body 1, and then enters the external pipe.

[0030] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

Claims

1. A retractable two-phase steam flow meter, comprising a flow meter body (1) and an adjusting handle (9), wherein the left end of the flow meter body (1) is connected to an inlet pipe (2), the right end of the flow meter body (1) is connected to an outlet pipe (3), and a measuring component is provided on the top of the flow meter body (1), characterized in that: The left end of the inlet pipe (2) is connected to the telescopic pipe outer body (4). The telescopic pipe outer body (4) is rotatably connected to the rotating pipe (5). The inner wall of the telescopic pipe outer body (4) is fixedly installed with an inner nut retaining ring (6). The inner nut retaining ring (6) is threaded on the rotating pipe (5). The outer wall of the rotating pipe (5) is provided with an external thread (501) that matches the flow meter body (1) of the inner nut retaining ring (6). The outer wall of the rotating pipe (5) is fixedly installed with an adjusting plate (7). The outer wall of the adjusting plate (7) is provided with an insertion hole (701). The insertion end of the adjusting handle (9) matches the insertion hole (701).

2. The retractable two-phase steam flow meter according to claim 1, characterized in that: The telescopic tube outer body (4) includes an outer body right (401) and an outer body left (402), which are connected together by welding.

3. The retractable two-phase steam flow meter according to claim 1, characterized in that: There is a gap between the outer wall of the rotating tube (5) and the inner wall of the telescopic tube outer body (4), and the gap is filled with graphite filler (13).

4. The retractable two-phase steam flow meter according to claim 3, characterized in that: The outer wall of the rotating tube (5) is fixedly fitted with a pressure cap (10). The right end of the pressure cap (10) is provided with an integrally formed protrusion, which extends into the gap between the outer body (4) of the telescopic tube and the rotating tube (5), and the protrusion is on the left side of the graphite filler (13).

5. The retractable two-phase steam flow meter according to claim 1, characterized in that: The left end of the rotating pipe (5) and the right end of the outlet pipe (3) are both welded with clamp heads (8).

6. The retractable two-phase steam flow meter according to claim 1, characterized in that: The adjusting handle (9) consists of a long handle and a cylindrical metal head, and the outer wall of the long handle is provided with anti-slip texture. The outer wall of the flow meter body (1) is provided with a flow direction mark (101).

7. The retractable two-phase steam flow meter according to claim 1, characterized in that: The adjustment disk (7) has multiple sockets (701), and the multiple sockets (701) are arranged in a circumferential array on the outer surface of the adjustment disk (7).

8. The retractable two-phase steam flow meter according to claim 1, characterized in that: A thermocouple connector (11) is fixedly installed on the top of the outlet pipe (3). The thermocouple connector (11) is close to the right end of the outlet pipe (3), and the connecting end of the thermocouple connector (11) extends into the outlet pipe (3).

9. The retractable two-phase steam flow meter according to claim 6, characterized in that: The flow meter body (1), inlet pipe (2), outlet pipe (3), and telescopic pipe outer body (4) are all fitted with an external insulation component (12), and the external insulation component (12) is offset from the flow direction mark (101) on the flow meter body (1).

10. The retractable two-phase steam flow meter according to claim 1, characterized in that: The measuring assembly includes a mounting column (14), which is fixedly installed on the top of the flow meter body (1). A high-temperature shut-off valve (15), an instrument three-valve group (16), and a differential pressure transmitter (17) are fixedly installed on the mounting column (14). Steam from the flow meter body (1) enters the high-temperature shut-off valve (15) through a pipeline. The top port of the high-temperature shut-off valve (15) is connected to the bottom port of the instrument three-valve group (16). The bottom port of the differential pressure transmitter (17) is connected to the top port of the instrument three-valve group (16). The flow meter body (1), the high-temperature shut-off valve (15), the instrument three-valve group (16), and the differential pressure transmitter (17) form a steam circulation pipeline.

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