A new type of double differential pressure orifice flowmeter

Abstract

The utility model discloses a novel double differential pressure orifice plate flowmeter, including pipeline, one end fixed setting of pipeline has orifice plate body, the inside fixed installation of pipeline has flow speed pipe, flow speed pipe can control the flow rate of fluid through orifice plate body, the outside welding of pipeline has fixed block, the inside of fixed block is equipped with fixed assembly, and fixed assembly can replace flow speed pipe.

Description

Technical Field

[0001] This utility model relates to the field of orifice plate flow meter technology, specifically a novel dual differential pressure orifice plate flow meter. Background Technology

[0002] In industrial production, energy metering, municipal water supply and other fields, flow measurement is a key link in realizing process control, cost accounting and resource optimization. Orifice plate flow meters have become one of the most widely used differential pressure flow meters due to their advantages such as simple structure, low cost and wide applicability to a wide range of media (such as gas, liquid and steam). Their working principle is based on Bernoulli's equation: when fluid flows through the orifice plate in the pipe, the flow velocity increases due to the reduction of the flow area, the static pressure decreases, and a differential pressure is formed upstream and downstream of the orifice plate. The fluid flow rate can be calculated by measuring this differential pressure value.

[0003] Currently, most orifice plate flow meters cannot control the flow velocity of fluid passing through the orifice plate, and the shrinkage ratio is fixed in traditional orifice plate designs, resulting in a large pressure loss when the fluid flows through the orifice plate. Therefore, it is necessary to design a new type of dual differential pressure orifice plate flow meter to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a novel dual differential pressure orifice plate 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 novel dual differential pressure orifice plate flow meter, comprising a pipe, an orifice plate body fixedly disposed at one end of the pipe, a flow velocity tube installed inside the pipe, the flow velocity tube being able to control the flow velocity of fluid passing through the orifice plate body, a fixing block welded to the outside of the pipe, and a fixing component disposed inside the fixing block, the fixing component being able to replace the flow velocity tube.

[0006] Preferably, the fixing component includes a movable groove formed inside the fixing block, a screw is rotatably connected to the inside of the movable groove via a bearing, a connecting plate is threaded to the outside of the screw, a locking block is fixedly connected to one side of the connecting plate, and a locking groove is formed on the inner wall of the flow tube, the inside of the locking groove is slidably connected to one side of the locking block.

[0007] Preferably, one end of the screw extends to the outside of the fixing block and is welded with a rotating plate, and a handle is installed on one side of the rotating plate.

[0008] Preferably, the bottom of the orifice plate body is connected to a high-pressure delivery pipe and a low-pressure delivery pipe, and identification tags are affixed to the outside of both the high-pressure delivery pipe and the low-pressure delivery pipe.

[0009] Preferably, a pressure detector is inserted at the bottom end of the high-pressure delivery pipe and the low-pressure delivery pipe, and a differential pressure transmitter is inserted at the bottom end of the pressure detector.

[0010] Preferably, the differential pressure transmitter is equipped with a display at its front end, which allows operators to easily adjust the pressure inside the orifice plate flowmeter.

[0011] Compared with the prior art, the beneficial effects of this utility model are: In this invention, when it is necessary to adjust the flow rate of the orifice plate body, the flow rate tube is placed into the pipe, and the operator turns the handle. The handle drives the rotating plate to rotate, and the screw rotates with the rotating plate. Since the screw and the connecting plate are threadedly engaged, the screw drives the connecting plate to move during rotation. The connecting plate drives the locking block to engage in the locking groove, which can fix the flow rate tube, thereby allowing the flow rate inside the orifice plate body to be adjusted. Attached Figure Description

[0012] Figure 1 A perspective view provided for an embodiment of this utility model; Figure 2 A perspective view of the pipeline provided for an embodiment of this utility model; Figure 3 This is an internal cross-sectional view of the fixing block provided in an embodiment of the present utility model.

[0013] In the diagram: 1. Pipe; 2. Orifice plate body; 3. Flow tube; 4. Fixed block; 5. Movable groove; 6. Screw; 7. Connecting plate; 8. Locking block; 9. Locking groove; 10. Rotating plate; 11. Handle; 12. High-pressure delivery pipe; 13. Low-pressure delivery pipe; 14. Pressure detector; 15. Differential pressure transmitter. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Example 1 Please refer to Figures 1-3As shown, this utility model provides a novel dual differential pressure orifice plate flow meter, including a pipe 1, an orifice plate body 2 fixedly installed at one end of the pipe 1, a flow velocity tube 3 installed inside the pipe 1, the flow velocity tube 3 can control the flow velocity of the fluid through the orifice plate body 2, a fixing block 4 welded to the outside of the pipe 1, a fixing component inside the fixing block 4, the fixing component can replace the flow velocity tube 3, a high pressure delivery pipe 12 and a low pressure delivery pipe 13 are connected to the bottom of the orifice plate body 2, an identification tag is affixed to the outside of the high pressure delivery pipe 12 and the low pressure delivery pipe 13, a pressure detector 14 is inserted at the bottom end of the high pressure delivery pipe 12 and the low pressure delivery pipe 13, a differential pressure transmitter 15 is inserted at the bottom end of the pressure detector 14, and a display is provided at the front end of the differential pressure transmitter 15, the display can facilitate the operator to adjust the pressure inside the orifice plate flow meter.

[0016] Example 2 Specifically, the fixing component includes a movable groove 5 inside the fixing block 4. A screw 6 is rotatably connected inside the movable groove 5 via a bearing. A connecting plate 7 is threaded to the outside of the screw 6. A locking block 8 is fixedly connected to one side of the connecting plate 7. A locking groove 9 is opened on the inner wall of the flow pipe 3. The inside of the locking groove 9 is slidably connected to one side of the locking block 8. One end of the screw 6 extends to the outside of the fixing block 4 and is welded with a rotating plate 10. A handle 11 is installed on one side of the rotating plate 10.

[0017] Specifically: When it is necessary to adjust the flow rate of the orifice plate body 2, the flow rate tube 3 is placed into the pipe 1, and the operator turns the handle 11. The handle 11 drives the rotating plate 10 to rotate, and the screw 6 rotates with the rotating plate 10. Since the screw 6 and the connecting plate 7 are in a threaded engagement relationship, the screw 6 drives the connecting plate 7 to move during rotation. The connecting plate 7 drives the locking block 8 to be locked into the locking groove 9, which can fix the flow rate tube 3, thereby allowing the flow rate inside the orifice plate body 2 to be adjusted.

[0018] Working principle: When it is necessary to adjust the flow rate of the orifice plate body 2, the flow rate tube 3 is placed into the pipe 1. The operator turns the handle 11, which drives the rotating plate 10 to rotate. The screw 6 rotates with the rotating plate 10. Since the screw 6 and the connecting plate 7 are threadedly engaged, the screw 6 drives the connecting plate 7 to move during rotation. The connecting plate 7 drives the locking block 8 to lock into the locking groove 9, which can fix the flow rate tube 3, thereby allowing the flow rate inside the orifice plate body 2 to be adjusted.

[0019] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0020] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A novel dual differential pressure orifice plate flow meter, comprising a pipe (1), characterized in that: One end of the pipe (1) is fixedly provided with an orifice plate body (2), and a flow velocity pipe (3) is installed inside the pipe (1). The flow velocity pipe (3) can control the flow velocity of the fluid through the orifice plate body (2). A fixing block (4) is welded to the outside of the pipe (1). A fixing component is provided inside the fixing block (4). The fixing component can replace the flow velocity pipe (3).

2. The novel dual differential pressure orifice plate flowmeter according to claim 1, characterized in that: The fixing component includes a movable groove (5) opened inside the fixing block (4), and a screw (6) is rotatably connected inside the movable groove (5) via a bearing. A connecting plate (7) is threadedly connected to the outside of the screw (6). A locking block (8) is fixedly connected to one side of the connecting plate (7). A locking groove (9) is opened on the inner wall of the flow tube (3), and the inside of the locking groove (9) is slidably connected to one side of the locking block (8).

3. The novel dual differential pressure orifice plate flowmeter according to claim 2, characterized in that: One end of the screw (6) extends to the outside of the fixing block (4) and is welded with a rotating plate (10), and a handle (11) is installed on one side of the rotating plate (10).

4. The novel dual differential pressure orifice plate flowmeter according to claim 1, characterized in that: The bottom of the orifice plate body (2) is connected to a high-pressure delivery pipe (12) and a low-pressure delivery pipe (13), and identification tags are affixed to the outside of both the high-pressure delivery pipe (12) and the low-pressure delivery pipe (13).

5. A novel dual differential pressure orifice plate flowmeter according to claim 4, characterized in that: Pressure detectors (14) are inserted at the bottom ends of the high-pressure delivery pipe (12) and the low-pressure delivery pipe (13), and differential pressure transmitters (15) are inserted at the bottom ends of the pressure detectors (14).

6. A novel dual differential pressure orifice plate flowmeter according to claim 5, characterized in that: The differential pressure transmitter (15) is equipped with a display at its front end, which allows the operator to easily adjust the pressure inside the orifice plate flowmeter.

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