High-pressure-resistant gas mass flow meter

Abstract

The utility model discloses a high-pressure-resistant gas mass flow meter which comprises a pipeline and a meter head, and a connecting structure is arranged between the bottom of the meter head and the upper side of the pipeline. The connecting structure comprises a connecting rod, a first fixing seat, a connecting seat, a connecting sleeve, two connecting bolts, two T-shaped grooves, two connecting nuts, a second fixing seat, a threaded part and a detection probe. The gas mass flow meter has the advantages that the connecting structure is adopted, when the gas mass flow meter is used, the connecting sleeve is connected with the connecting rod, and the connecting sleeve is connected with the connecting rod. Through the cooperation of the first fixing seat, the connecting seat, the connecting sleeve, the threaded part and the second fixing seat, the gas mass flow meter head can be stably connected with the pipeline, the connection modes comprise insertion connection and threaded connection, the connection strength between the gas mass flow meter and the pipeline can be improved, and the service life of the gas mass flow meter is prolonged. And therefore, the situation of leakage caused by large pressure difference between the air pressure in the pipeline and the atmospheric pressure can be prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of gas mass flowmeters, in particular to a high-pressure resistant gas mass flowmeter. Background Art

[0002] A gas mass flow meter is an instrument used to measure gas flow. The working principle of a gas mass flow meter usually involves measuring the mass of the gas passing through the flow meter, which is usually achieved by using a thermistor or an acoustic wave sensor.

[0003] In the prior art, most gas mass flow meters are connected to pipelines by plugging. However, when the pressure difference between the gas pressure in the pipeline and the atmospheric pressure is large, the connection between the gas mass flow meter and the pipeline is prone to damage or gas leakage, affecting the measurement accuracy.

[0004] Based on the above problems, there may already be technical means in the current technology to solve the above technical solutions. This case intends to provide an alternative or replacement technical means. Utility Model Content

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a high-pressure gas mass flow meter, including a pipeline and a meter head, a connecting structure is provided between the bottom of the meter head and the upper side of the pipeline, and the connecting structure includes:

[0006] A connecting rod, a first fixing seat, a connecting seat, a connecting sleeve, two connecting bolts, two T-slots, two connecting nuts, a second fixing seat, a threaded portion, and a detection probe;

[0007] The first fixing seat is installed on the top of the pipe by screws, the top of the connecting rod is connected to the bottom of the header, the second fixing seat is installed inside the top of the pipe, the bottom of the connecting rod passes through the first fixing seat, the top wall of the pipe and the second fixing seat respectively, the connecting seat is arranged at the middle part of the connecting rod, the connecting sleeve is arranged at the bottom of the connecting seat, the connecting sleeve is plugged into the top of the first fixing seat, the two T-slots are opened at the top of the first fixing seat, the two connecting nuts are arranged inside the two T-slots, the two connecting bolts pass through both sides of the connecting seat and are threadedly connected with the two connecting nuts, the threaded portion is arranged on the lower side of the connecting rod, and the detection probe is arranged at the bottom of the connecting rod.

[0008] Preferably, an outer side of the connecting sleeve is provided with an external thread, an inner thread is provided at the connection point between the connecting sleeve and the first fixing seat, and the outer side of the connecting sleeve is threadedly connected to the upper side of the first fixing seat.

[0009] Preferably, two positioning pins are provided on both sides of the connecting seat, and the two positioning pins are plugged into the top of the first fixing seat.

[0010] Preferably, a first sealing gasket is provided on the upper side of the first fixing seat, and the upper side of the first sealing gasket is in close contact with the lower edge of the connecting sleeve.

[0011] Preferably, the threaded portion passes through the second fixing seat, and the outer side of the threaded portion is threadedly connected to the inner wall of the second fixing seat.

[0012] Preferably, two second sealing pads are provided on both sides of the connecting seat, and the connecting bolts pass through the second sealing pads.

[0013] Beneficial Effects

[0014] The utility model provides a high-pressure resistant gas mass flow meter, which has the following beneficial effects: the technical solution adopts a connection structure, and when in use, the gas mass flow meter head can be stably connected to the pipeline through the cooperation of the first fixed seat, the connecting seat, the connecting sleeve, the threaded portion and the second fixed seat, wherein the connection methods include plug-in and threaded connection, which can increase the connection strength between the gas mass flow meter and the pipeline, thereby preventing the large pressure difference between the air pressure in the pipeline and the atmospheric pressure, which may cause leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main cross-sectional structure of a high-pressure resistant gas mass flowmeter described in the utility model.

[0016] Figure 2 This is a schematic diagram of the main structure of a high-pressure resistant gas mass flow meter described in the utility model.

[0017] Figure 3 It is a schematic diagram of a partially enlarged structure of a high-pressure resistant gas mass flowmeter described in the utility model.

[0018] In the figure: 1. pipeline, 2. meter head, 3. connecting rod, 4. first fixing seat, 5. connecting seat, 6. connecting sleeve, 7. connecting bolt, 8. T-slot, 9. connecting nut, 10. second fixing seat, 11. threaded part, 12. detection probe, 13. positioning pin, 14. first sealing gasket, 15. second sealing gasket. DETAILED DESCRIPTION

[0019] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0020] Example

[0021] See also Figure 1-3,The utility model provides a technical solution: a high pressure resistant gas mass flow meter;

[0022] This case aims to provide a high-pressure gas mass flow meter. The existing gas mass flow meter is prone to damage or gas leakage at the connection between the gas mass flow meter and the pipeline.

[0023] Based on the above problems, the components in this case include a pipe 1 and a meter head 2. A connection structure is provided between the bottom of the meter head 2 and the upper side of the pipe 1. The connection structure includes:

[0024] A connecting rod 3, a first fixing seat 4, a connecting seat 5, a connecting sleeve 6, two connecting bolts 7, two T-slots 8, two connecting nuts 9, a second fixing seat 10, a threaded portion 11 and a detection probe 12;

[0025] The first fixing seat 4 is installed on the top of the pipeline 1 by screws, the top of the connecting rod 3 is connected to the bottom of the meter head 2, the second fixing seat 10 is installed inside the top of the pipeline 1, the bottom of the connecting rod 3 passes through the first fixing seat 4, the top wall of the pipeline 1 and the second fixing seat 10 respectively, the connecting seat 5 is arranged in the middle part of the connecting rod 3, the connecting sleeve 6 is arranged at the bottom of the connecting seat 5, the connecting sleeve 6 is plugged into the top of the first fixing seat 4, two T-slots 8 are opened at the top of the first fixing seat 4, two connecting nuts 9 are arranged inside the two T-slots 8, two connecting bolts 7 pass through both sides of the connecting seat 5 and are threadedly connected with the two connecting nuts 9, the threaded part 11 is arranged on the lower side of the connecting rod 3, and the detection probe 12 is arranged at the bottom of the connecting rod 3;

[0026] It should be noted that, during use, first insert the bottom of the connecting rod 3 into the pipe 1, and rotate the meter head 2 and the connecting rod 3 through the connecting seat 5. At this time, the threaded portion 11 and the middle part of the second fixing block, the connecting sleeve 6 and the upper side of the first fixing seat 4 are all threadedly connected, and the detection probe 12 enters the pipe 1. Then, the two connecting nuts 9 are respectively inserted into the two T-slots 8, and the two connecting nuts 9 are threadedly connected with the two connecting nuts 9. The fastening force of the threaded connection between the two is used to increase the connection strength of the first fixing seat 4 and the connecting seat 5, so as to achieve the connection between the meter head 2 and the pipe 1, and the strength of the connection is increased by the above parts to prevent the gas mass flow meter from being easily damaged or gas leaking at the connection between the pipe 1 and the pipe 1 when the pressure difference between the air pressure in the pipe 1 and the atmospheric pressure is large, which affects the measurement accuracy and finally achieves the purpose of high pressure resistance;

[0027] It should be emphasized that after the connecting sleeve 6 is threadedly connected to the upper side of the first fixed seat 4, the lower side of the connecting sleeve 6 will squeeze and compress the first sealing gasket 14, thereby increasing the sealing between the two, and the second sealing gasket 15 can further increase the connection sealing between the connecting seat 5 and the first fixed seat 4, and the positioning pin 13 is used to increase the stability of the connecting seat 5 and increase the stability of the connecting seat 5 and the meter head 2.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-pressure gas mass flow meter, comprising a pipeline and a meter head, wherein a connection structure is provided between the bottom of the meter head and the upper side of the pipeline, characterized in that: The connection structure comprises: A connecting rod, a first fixing seat, a connecting seat, a connecting sleeve, two connecting bolts, two T-slots, two connecting nuts, a second fixing seat, a threaded portion, and a detection probe; The first fixing seat is installed on the top of the pipe by screws, the top of the connecting rod is connected to the bottom of the header, the second fixing seat is installed inside the top of the pipe, the bottom of the connecting rod passes through the first fixing seat, the top wall of the pipe and the second fixing seat respectively, the connecting seat is arranged at the middle part of the connecting rod, the connecting sleeve is arranged at the bottom of the connecting seat, the connecting sleeve is plugged into the top of the first fixing seat, the two T-slots are opened at the top of the first fixing seat, the two connecting nuts are arranged inside the two T-slots, the two connecting bolts pass through both sides of the connecting seat and are threadedly connected with the two connecting nuts, the threaded portion is arranged on the lower side of the connecting rod, and the detection probe is arranged at the bottom of the connecting rod.

2. A high pressure resistant gas mass flow meter according to claim 1, characterized in that: The outer side of the connecting sleeve is provided with an external thread, the connecting sleeve and the first fixing seat are connected with an internal thread, and the outer side of the connecting sleeve is threadedly connected with the upper side of the first fixing seat.

3. A high pressure resistant gas mass flow meter according to claim 1, characterized in that: Two positioning pins are arranged on both sides of the connecting seat, and the two positioning pins are plugged into the top of the first fixing seat.

4. A high pressure resistant gas mass flow meter according to claim 1, characterized in that: A first sealing gasket is disposed on the upper side of the first fixing seat, and the upper side of the first sealing gasket is in close contact with the lower edge of the connecting sleeve.

5. A high pressure resistant gas mass flow meter according to claim 1, characterized in that: The threaded portion passes through the second fixing seat, and the outer side of the threaded portion is threadedly connected to the inner wall of the second fixing seat.

6. A high pressure resistant gas mass flow meter according to claim 1, characterized in that: Two second sealing pads are arranged on both sides of the connection seat, and the connection bolts pass through the second sealing pads.

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