Speed type flowmeter capable of accurately measuring gas flow

Abstract

The utility model discloses a velocity type flowmeter capable of accurately measuring gas flow, which comprises a pipeline, a right flange plate is fixedly welded at the end part of the pipeline, a slot is arranged inside the right flange plate, a screw is sleeved inside the slot, one end of the screw is connected with a nut through threads, a sealing ring is tightly pressed on one side of the right flange plate, and the other side of the right flange plate is connected with the nut. According to the velocity type flowmeter capable of accurately measuring the gas flow, by rotating and loosening the nut, the screw loses constraint, the screw is conveniently moved upwards to be quickly disassembled, so that a pipeline and the flowmeter are disassembled, the groove design is convenient to quickly remove or sleeve the screw for installation, the nut is not needed to be disassembled and separated from the screw, and the butt joint installation efficiency of the pipeline and a gas pipe is improved; the flowmeter loses constraint by rotating the dismantling screw, the flowmeter is conveniently moved upwards to drive the connecting pipe, the supporting ring and the sealing gasket to be dismantled so that the flowmeter can be conveniently replaced, the supporting ring is driven by rotating the screwing screw to press the sealing gasket on the upper end face of the pipeline, and gas leakage can be effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent instruments and meters, in particular to a velocity flow meter for accurately measuring gas flow. Background Art

[0002] Velocity flowmeter is an instrument that measures flow by measuring the average velocity of flow in a pipeline. Since there are many ways to measure velocity, there are many different measurement principles for velocity flowmeters depending on the physical quantity being measured. Velocity flowmeters mainly include turbine flowmeters, vortex flowmeters, electromagnetic flowmeters, ultrasonic flowmeters, etc.

[0003] At present, the existing utility model reduces the resistance of the measured fluid, reduces the permanent pressure loss of the fluid, and has the characteristics of not easy to accumulate dirt and not easy to wear. In addition, since the total pressure is led out from the head of the throttling element through the pressure pipe, the maximum pressure that can be obtained in the pipeline is obtained, and the static pressure in the channel flow is matched to obtain the maximum differential pressure that can be obtained under a certain flow rate.

[0004] For example, a velocity flow meter disclosed in the authorization number CN203443619U includes a measuring tube, a throttling element, a static pressure tube and a total pressure tube. The throttling element is composed of an intermediate cylinder and a mirror-image rotating body with an arc as the generatrix, which is tangent to the outer circles of the left and right ends of the cylinder respectively. At least two guide plates are evenly arranged on the outer circumferences of the left and right ends of the throttling element. The static pressure tube is arranged on the wall of the measuring tube corresponding to the center line position of the intermediate cylinder of the throttling element; the total pressure tube axially penetrates the throttling element and leads from the tail of the throttling element to the wall of the measuring tube. However, such a velocity flow meter is not convenient for quickly installing the measuring tube to connect the air pipe, and it is not convenient to disassemble and replace the flow meter.

[0005] It can be seen from the solutions disclosed in the above-mentioned existing patent documents that it is not convenient to quickly install the measuring tube to connect with the air pipe, and it is not convenient to disassemble and replace the flow meter. Therefore, it is necessary to improve the existing technology. Utility Model Content

[0006] The utility model aims to provide a velocity flow meter for accurately measuring gas flow, so as to solve the problems that it is inconvenient to quickly install a measuring tube to connect with a gas pipe and it is inconvenient to disassemble and replace the flow meter.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a velocity flowmeter for accurately measuring gas flow, comprising a pipeline, a right flange is fixedly welded at the end of the pipeline, a slot is arranged inside the right flange, a screw is sleeved inside the slot, a nut is threadedly connected to one end of the screw, a sealing ring is pressed on one side of the right flange, a left flange is pressed on one side of the sealing ring, an air pipe is fixedly welded on one side of the left flange, a sealing gasket is pressed on the upper end of the pipeline, a support ring is fixedly adhered to the upper end of the sealing gasket, a connecting pipe is fixedly welded inside the support ring, a flowmeter is fixedly installed on the upper end of the connecting pipe, and a screw is sleeved inside the support ring.

[0008] Preferably, the internal sleeve screws of the right flange, the internal sleeve screws of the sealing ring, and the internal sleeve screws of the left flange are loosened by turning the nuts, so that the screws are freed from restraint and can be conveniently moved upward to quickly remove the screws, so as to remove the pipeline and the flow meter.

[0009] Preferably, the sealing ring is provided with a slot inside, and the left flange is provided with a slot inside. One side of the left flange is close to the nut. The slotted design facilitates quick removal or insertion of the screw for installation, without the need to remove the nut from the screw, thereby improving the efficiency of the pipe and air pipe docking installation.

[0010] Preferably, the lower end of the screw is connected to the pipe through a thread, and the internal sleeve of the sealing gasket is screwed. By turning to remove the screw, the flow meter is freed from restraint, and the flow meter is conveniently moved upward to drive the connecting pipe, support ring and sealing gasket to be removed so as to replace the flow meter.

[0011] Preferably, the interior of the sealing gasket is sleeved with a connecting pipe, and the pipe is connected to the air pipe. By turning the tightening screw, the supporting ring is driven to press the sealing gasket against the upper end surface of the pipe, which can effectively prevent gas leakage.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The internal sleeve screws of the right flange, the internal sleeve screws of the sealing ring, and the internal sleeve screws of the left flange of the utility model are loosened by turning the nuts, so that the screws are freed from restraint and can be conveniently moved upward to quickly remove the screws, so as to remove the pipeline and the flow meter.

[0014] 2. The sealing ring of the utility model is provided with a slot inside, and the left flange is provided with a slot inside. One side of the left flange is close to the nut. The slot design is convenient for quick removal or insertion of screws for installation. There is no need to remove the nut from the screw, thereby improving the efficiency of the joint installation of the pipeline and the air pipe.

[0015] 3. The lower end of the screw of the utility model is connected to the pipeline through a thread, and the internal sleeve of the sealing gasket is connected to the screw. By turning to remove the screw, the flow meter is freed from restraint, and the flow meter is conveniently moved upward to drive the connecting pipe, support ring and sealing gasket to be removed, so as to replace the flow meter.

[0016] 4. The internal sleeve of the sealing gasket of the utility model is connected to the connecting pipe, and the pipeline and the air pipe are connected. By turning the tightening screw, the support ring is driven to press the sealing gasket against the upper end surface of the pipeline, which can effectively prevent gas leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is the right view of the right flange of the utility model;

[0019] Figure 3 It is an enlarged view of point A of the present utility model.

[0020] In the figure: 1 pipeline, 11 right flange, 12 slot, 13 screw, 14 nut, 15 sealing ring, 16 left flange, 17 air pipe, 2 sealing gasket, 21 support ring, 22 connecting pipe, 23 flow meter, 24 screw. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example 1

[0023] See also Figure 1-3 A velocity flowmeter for accurately measuring gas flow rate shown in the figure includes a pipeline 1, a right flange 11 is fixedly welded at the end of the pipeline 1, a slot 12 is arranged inside the right flange 11, a screw 13 is sleeved inside the slot 12, a nut 14 is threadedly connected to one end of the screw 13, a sealing ring 15 is pressed on one side of the right flange 11, a left flange 16 is pressed on one side of the sealing ring 15, an air pipe 17 is fixedly welded on one side of the left flange 16, a sealing gasket 2 is pressed on the upper end of the pipeline 1, a support ring 21 is fixedly adhered to the upper end of the sealing gasket 2, a connecting pipe 22 is fixedly welded inside the support ring 21, a flowmeter 23 is fixedly installed on the upper end of the connecting pipe 22, and a screw 24 is sleeved inside the support ring 21.

[0024] In order to improve the efficiency of the docking installation of the pipeline 1 and the air pipe 17, the internal sleeve screw 13 of the right flange 11, the internal sleeve screw 13 of the sealing ring 15, and the internal sleeve screw 13 of the left flange 16 are loosened by turning the nut 14, so that the screw 13 is free from restraint, and the screw 13 can be conveniently moved upward to be quickly removed, so as to remove the pipeline 1 and the flow meter 23. The interior of the sealing ring 15 is provided with a slot 12, and the interior of the left flange 16 is provided with a slot 12. One side of the left flange 16 is close to the nut 14. The design of the slot 12 is convenient for quick removal or insertion of the screw 13 for installation, and there is no need to remove the nut 14 to disengage the screw 13, thereby improving the efficiency of the docking installation of the pipeline 1 and the air pipe 17.

[0025] In this embodiment, by loosening the nut 14, the screw 13 is freed from restraint, and the screw 13 can be conveniently moved upward to be quickly removed, so as to remove the pipeline 1 and the flow meter 23. The design of the slot 12 facilitates the quick removal or insertion of the screw 13 for installation, and there is no need to remove the nut 14 to disengage the screw 13, thereby improving the efficiency of the docking installation of the pipeline 1 and the air pipe 17.

[0026] Example 2

[0027] See also Figure 1-3 The present embodiment further explains Example 1. In the figure, a velocity flowmeter for accurately measuring gas flow rate includes a pipeline 1, a right flange 11 is fixedly welded at the end of the pipeline 1, a slot 12 is arranged inside the right flange 11, a screw 13 is sleeved inside the slot 12, a nut 14 is threadedly connected to one end of the screw 13, a sealing ring 15 is pressed on one side of the right flange 11, a left flange 16 is pressed on one side of the sealing ring 15, an air pipe 17 is fixedly welded on one side of the left flange 16, a sealing gasket 2 is pressed on the upper end of the pipeline 1, a support ring 21 is fixedly adhered to the upper end of the sealing gasket 2, a connecting pipe 22 is fixedly welded inside the support ring 21, a flowmeter 23 is fixedly installed on the upper end of the connecting pipe 22, and a screw 24 is sleeved inside the support ring 21.

[0028] In order to facilitate the replacement of the flow meter 23, the lower end of the screw 24 is connected to the pipe 1 through a thread, and the screw 24 is sleeved inside the sealing gasket 2. By rotating and removing the screw 24, the flow meter 23 is freed from restraint, and the flow meter 23 is conveniently moved upward to drive the connecting pipe 22, the support ring 21 and the sealing gasket 2 to be removed, so as to replace the flow meter 23. The inside of the sealing gasket 2 is sleeved with the connecting pipe 22, and the pipe 1 is connected to the air pipe 17. By rotating and tightening the screw 24, the support ring 21 is driven to press the sealing gasket 2 against the upper end surface of the pipe 1, which can effectively prevent gas leakage.

[0029] In this embodiment, by rotating the removal screw 24, the flow meter 23 is freed from restraint, and the flow meter 23 is conveniently moved upward to drive the connecting pipe 22, the support ring 21 and the sealing gasket 2 to be removed, so as to replace the flow meter 23. By rotating the tightening screw 24, the support ring 21 is driven to press the sealing gasket 2 against the upper end surface of the pipeline 1, which can effectively prevent gas leakage.

[0030] The velocity flow meter for accurately measuring gas flow can loosen the nut 14 by turning so that the screw 13 is free from restraint, and the screw 13 can be conveniently moved upward to be quickly removed, so as to remove the pipeline 1 and the flow meter 23. The design of the slot 12 is convenient for quick removal or insertion of the screw 13 for installation, and there is no need to remove the nut 14 to disengage the screw 13, thereby improving the efficiency of the butt connection installation of the pipeline 1 and the air pipe 17; the flow meter 23 is free from restraint by turning to remove the screw 24, and the flow meter 23 can be conveniently moved upward to drive the connecting pipe 22, the support ring 21 and the sealing gasket 2 to be removed, so as to replace the flow meter 23; the support ring 21 is driven by turning to tighten the screw 24 to press the sealing gasket 2 against the upper end surface of the pipeline 1, thereby effectively preventing gas leakage.

[0031] 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 velocity flow meter for accurately measuring gas flow, comprising a pipeline (1), characterized in that: A right flange (11) is fixedly welded to the end of the pipeline (1), a slot (12) is provided inside the right flange (11), a screw (13) is sleeved inside the slot (12), one end of the screw (13) is threadedly connected to a nut (14), a sealing ring (15) is pressed on one side of the right flange (11), a left flange (16) is pressed on one side of the sealing ring (15), an air pipe (17) is fixedly welded to one side of the left flange (16), a sealing gasket (2) is pressed on the upper end of the pipeline (1), a support ring (21) is fixedly adhered to the upper end of the sealing gasket (2), a connecting pipe (22) is fixedly welded inside the supporting ring (21), a flow meter (23) is fixedly installed on the upper end of the connecting pipe (22), and a screw (24) is sleeved inside the supporting ring (21).

2. A velocity flow meter for accurately measuring gas flow according to claim 1, characterized in that: The internal sleeve screw (13) of the right flange (11), the internal sleeve screw (13) of the sealing ring (15), and the internal sleeve screw (13) of the left flange (16).

3. A velocity flow meter for accurately measuring gas flow according to claim 1, characterized in that: The sealing ring (15) is provided with a slot (12) inside, the left flange (16) is provided with a slot (12) inside, and one side of the left flange (16) is tightly attached to the nut (14).

4. A velocity flow meter for accurately measuring gas flow according to claim 1, characterized in that: The lower end of the screw (24) is connected to the pipe (1) via a thread, and the inner part of the sealing gasket (2) is sleeved with the screw (24).

5. A velocity flow meter for accurately measuring gas flow according to claim 1, characterized in that: The interior of the sealing pad (2) is sleeved with a connecting pipe (22), and the pipeline (1) is in communication with the air pipe (17).

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