Compact high-pressure orifice plate flowmeter

Abstract

The utility model discloses a compact high-pressure orifice plate flowmeter, which relates to the technical field of orifice plate flowmeters and comprises an orifice plate flowmeter body, the two ends of the orifice plate flowmeter body are provided with pipelines to be measured through flanges, and the outer side wall of the orifice plate flowmeter body is fixedly connected with two connecting pipes. The two connecting pipes are connected with the orifice plate flow meter body and communicated with the orifice plate flow meter body, the ends, away from the orifice plate flow meter body, of the two connecting pipes are fixedly connected with a pressure gauge, a throttling plate is arranged on the inner wall of the orifice plate flow meter body, and a throttling hole is formed in one side of the center of the throttling plate. A protection unit is arranged at the joint of the orifice plate flowmeter body and a measured pipeline. The protection unit is arranged at the joint of the orifice plate flowmeter body and the measured pipeline, so that the sealing performance and durability of the joint are improved. Therefore, potential safety hazards are reduced, and the service life of equipment is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of orifice plate flow meter technology, and in particular to a compact high-pressure orifice plate flow meter. Background Technology

[0002] An orifice plate flow meter is a high-range differential pressure flow device composed of a standard orifice plate and a multi-parameter differential pressure transmitter (or differential pressure transmitter, temperature transmitter, and pressure transmitter). It can measure the flow of gas, steam, liquid, and other fluids, and is widely used in process control and measurement in petroleum, chemical, metallurgical, power, heating, and water supply industries.

[0003] Traditional orifice plate flow meters typically consist of an orifice plate, pressure taps, and connecting flanges. They calculate flow rate by measuring the pressure difference before and after the fluid passes through the throttling device. In high-pressure environments, the connections of orifice plate flow meters (such as the flange connection to the pipeline) are prone to loosening or leakage due to prolonged exposure to high-pressure fluids. This not only affects the accuracy of the measurement but may also lead to safety hazards. Furthermore, the connection parts of orifice plate flow meters (especially flanges and other connecting components) are susceptible to wear, corrosion, and even breakage. These problems not only shorten the service life of the flow meter but also increase the frequency of maintenance. Summary of the Invention

[0004] The purpose of this invention is to provide a compact high-pressure orifice plate flow meter that improves the sealing and durability of the connection between the orifice plate flow meter body and the measured pipeline. This not only reduces potential safety hazards but also extends the service life of the equipment.

[0005] To achieve the above objectives, a compact high-pressure orifice plate flow meter is provided, comprising: an orifice plate flow meter body, wherein the ends of the orifice plate flow meter body are connected to the pipes to be measured via flanges, two connecting pipes are fixedly connected to the outer wall of the orifice plate flow meter body and are in communication with the orifice plate flow meter body, a pressure device is fixedly connected to the ends of the two connecting pipes away from the orifice plate flow meter body, a throttling plate is provided on the inner wall of the orifice plate flow meter body, a throttling orifice is provided on one side of the center of the throttling plate, and a protection unit is provided at the connection between the orifice plate flow meter body and the pipes to be measured.

[0006] According to the compact high-pressure orifice plate flowmeter, the protection unit includes a first protective shell sleeved on the outer wall of the connection between the orifice plate flowmeter body and the measured pipeline. A connecting seat is installed on the outer wall of the first protective shell. A rotating rod is rotatably connected to the inner wall of the connecting seat via a rotating shaft. A second protective shell is fixedly connected to one end of the rotating rod. A fastening bolt is threaded onto the upper outer wall of the second protective shell. Receiving grooves are provided on the inner walls of the first and second protective shells.

[0007] According to the aforementioned compact high-pressure orifice plate flow meter, the fastening bolt threaded through both the first and second protective shells, and a fastening nut is threaded onto the outer wall of one end of the fastening bolt.

[0008] According to the compact high-pressure orifice plate flow meter, the inner wall of the receiving groove is equipped with a protective gasket, and the receiving groove is adapted to the outer wall of the flange.

[0009] According to the compact high-pressure orifice plate flow meter, a connecting bolt is threaded onto one side of the flange.

[0010] This utility model has the following beneficial effects:

[0011] 1. Compared with existing technologies, by installing a protection unit at the connection between the orifice plate flowmeter body and the measured pipeline, the sealing and durability of the connection are improved. This not only reduces potential safety hazards but also extends the service life of the equipment. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0013] Figure 1 This is a side-view perspective view of a compact high-pressure orifice plate flow meter according to this utility model;

[0014] Figure 2 This is a three-dimensional view showing the disassembled state of a compact high-pressure orifice plate flow meter according to this utility model;

[0015] Figure 3 This is a three-dimensional cross-sectional view of the protection unit of a compact high-pressure orifice plate flowmeter according to this utility model;

[0016] Figure 4 This is a frontal view of a compact high-pressure orifice plate flow meter according to this utility model.

[0017] Legend:

[0018] 1. Orifice plate flowmeter body; 2. Measured pipe; 3. Connecting pipe; 4. Pressure device; 5. Throttling plate; 6. Throttling orifice; 7. Protection unit; 701. Protective shell one; 702. Connecting seat; 703. Rotating rod; 704. Protective shell two; 705. Fastening bolt; 706. Receiving groove; 7051. Fastening nut; 7061. Protective gasket; 101. Flange; 102. Connecting bolt. Detailed Implementation

[0019] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0020] Reference Figure 1-4 This utility model discloses a compact high-pressure orifice plate flow meter, comprising: an orifice plate flow meter body 1, with a test pipe 2 installed at both ends of the orifice plate flow meter body 1 via flanges 101, a connecting bolt 102 threadedly connected to one side of the flanges 101, two connecting pipes 3 fixedly connected to the outer wall of the orifice plate flow meter body 1, and the two connecting pipes 3 communicating with the orifice plate flow meter body 1, a pressure device 4 fixedly connected to the end of the two connecting pipes 3 away from the orifice plate flow meter body 1, the pressure device 4 calculating the flow rate of fluid flowing through the orifice plate flow meter body 1, a throttling plate 5 provided on the inner wall of the orifice plate flow meter body 1, when the fluid passes through the inside of the orifice plate flow meter body 1, the fluid is restricted by the throttling plate 5, thereby increasing the flow velocity and reducing the pressure, a throttling orifice 6 provided on one side of the center of the throttling plate 5, and a protection unit 7 provided at the connection between the orifice plate flow meter body 1 and the test pipe 2.

[0021] The protection unit 7 includes a first protective shell 701 sleeved on the outer wall of the connection between the orifice plate flowmeter body 1 and the measured pipe 2. A connecting seat 702 is installed on the outer wall of the first protective shell 701. A rotating rod 703 is rotatably connected to the inner wall of the connecting seat 702 via a rotating shaft. A second protective shell 704 is fixedly connected to one end of the rotating rod 703. A fastening bolt 705 is threadedly connected to the upper outer wall of the second protective shell 704. The fastening bolt 705 is threaded through the first protective shell 701 and the second protective shell 704. A fastening nut 7051 is threadedly connected to the outer wall of the end through which the fastening bolt 705 passes. The first protective shell 701 and the second protective shell 704 are fixedly connected by the fastening bolt 705 and the fastening nut 7051. The inner walls of the first protective shell 701 and the second protective shell 704 are provided with a receiving groove 706. A protective gasket 7061 is installed on the inner wall of the receiving groove 706. The receiving groove 706 is adapted to the outer wall of the flange 101.

[0022] Working principle: During use, fluid flows into the orifice plate flowmeter body 1 through the measured pipe 2. When the fluid passes through the throttling plate 5, there is a throttling orifice 6 on the throttling plate, which will increase the velocity of the fluid when passing through the throttling orifice 6. According to Bernoulli's principle, the increase in velocity will lead to a decrease in the static pressure of the fluid. Therefore, a pressure difference will be formed before and after the throttling orifice. The flow rate of the fluid is calculated by measuring the pressure difference through the pressure gauge 4. In addition, at the connection between the measured pipe 2 and the orifice plate flowmeter body 1, protective shell 1 701 and protective shell 2 704 can be fitted onto the outer wall of the flange 101 and fixedly connected by fastening bolts 705 and fastening nuts 7051. This is used to protect the internal structure from the influence of external impact or pressure, and at the same time ensure the stability and sealing of the entire device.

[0023] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A compact high-pressure orifice plate flow meter, characterized in that, include: The orifice plate flow meter body (1) has a test pipe (2) installed at both ends of the orifice plate flow meter body (1) via flanges (101). Two connecting pipes (3) are fixedly connected to the outer wall of the orifice plate flow meter body (1), and the two connecting pipes (3) are connected to the orifice plate flow meter body (1). A pressure device (4) is fixedly connected to the end of the two connecting pipes (3) away from the orifice plate flow meter body (1). A throttling plate (5) is provided on the inner wall of the orifice plate flow meter body (1). A throttling hole (6) is provided on one side of the center of the throttling plate (5). A protection unit (7) is provided at the connection between the orifice plate flow meter body (1) and the test pipe (2).

2. The compact high-pressure orifice plate flow meter according to claim 1, characterized in that, The protection unit (7) includes a first protective shell (701) sleeved on the outer wall of the connection between the orifice plate flowmeter body (1) and the pipe (2) being measured. A connecting seat (702) is installed on the outer wall of the first protective shell (701). A rotating rod (703) is rotatably connected to the inner wall of the connecting seat (702) via a rotating shaft. A second protective shell (704) is fixedly connected to one end of the rotating rod (703). A fastening bolt (705) is threaded onto the upper outer wall of the second protective shell (704). The inner walls of the first protective shell (701) and the second protective shell (704) are provided with receiving grooves (706).

3. A compact high-pressure orifice plate flow meter according to claim 2, characterized in that, The fastening bolt (705) is threaded through the first protective shell (701) and the second protective shell (704), and a fastening nut (7051) is threadedly connected to the outer wall of one end of the fastening bolt (705).

4. A compact high-pressure orifice plate flow meter according to claim 2, characterized in that, The inner wall of the receiving groove (706) is fitted with a protective gasket (7061), and the receiving groove (706) is adapted to the outer wall of the flange (101).

5. A compact high-pressure orifice plate flow meter according to claim 1, characterized in that, One side of the flange (101) is threaded with a connecting bolt (102).

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