CN221198543U - Plug-in type thermal type gas mass flowmeter - Google Patents

Abstract

The utility model discloses an inserted thermal type gas mass flowmeter, which relates to the technical field of gas mass flowmeters and comprises a pipeline, wherein the flowmeter is connected to the pipeline, the flowmeter is inserted into a sealing element through a mounting opening and a hole, a fixing mechanism is arranged on the sealing element, the fixing mechanism is connected with the flowmeter, after the inner diameter of the pipeline is confirmed, the position of the fixing ring is adjusted through a fixing ring arranged on the outer wall of the flowmeter, an inductive probe of the flowmeter is positioned at the upper part of the axis of the inner diameter of the pipeline, then a jackscrew is rotated, the jackscrew moves inwards to push a sealing ring, so that the position of the fixing ring is fixed, then a tool is used for rotating an adjusting rod in an adjusting hole during mounting, the adjusting rod pushes a telescopic plate to move oppositely to push against the top surface of the fixing ring, preliminary limiting is realized, and then the fixing ring is extruded downwards to be positioned at a proper measuring position.

Description

Plug-in type thermal type gas mass flowmeter

Technical Field

The utility model relates to the technical field of gas mass flow meters, in particular to an inserted thermal type gas mass flow meter.

Background

A gas mass flow meter is a device for measuring the flow of a gas. It determines the mass flow of gas by sensing the effect of the gas flow on the sensor. These flow meters typically use thermal scattering or thermal conductivity principles for measurements.

In the process of installing the flowmeter, a bolt connection mode is adopted, and in the process of using the flowmeter, the flowmeter is always subjected to the pressure of gas in a pipeline due to the installation mode of the flowmeter, so that the fixed position of the flowmeter is impacted and pressurized at the place of threaded connection, the sealing effect of the flowmeter is deteriorated, and potential safety hazards are generated.

Disclosure of utility model

In view of the problems existing in the prior art, the utility model discloses an inserted thermal type gas mass flowmeter, which adopts the technical scheme that the inserted thermal type gas mass flowmeter comprises a pipeline and a flowmeter, wherein the flowmeter is connected to the pipeline, a hole is formed in the pipeline, a sealing element is arranged at the position of the hole, a mounting opening matched with the hole is formed in the sealing element, the flowmeter passes through the mounting opening and the hole and is inserted into the sealing element, a fixing mechanism is arranged on the sealing element, and the fixing mechanism is connected with the flowmeter.

As a preferable technical scheme of the utility model, the sealing element comprises an upper sealing element and a lower sealing element, the upper sealing element and the lower sealing element are both shells, opposite surfaces of the upper sealing element and the lower sealing element are matched with the outer wall of the pipeline, a first groove is formed in the outer wall of the upper sealing element, a second groove is formed in the outer wall of the lower sealing element, the positions of the first groove and the second groove are corresponding and communicated with each other, the first groove and the second groove are connected through bolts and nuts, and the sealing element is divided into two parts, so that the sealing element is convenient to detach and install by users.

As a preferable technical scheme of the utility model, the fixing mechanism comprises a fixing ring, a top piece, a telescopic plate, an adjusting rod and a lifting bolt, wherein the fixing ring is detachably connected to the flowmeter, the diameter of the fixing ring is matched with the diameter of the mounting opening, the left and right symmetrical top pieces are arranged at two sides of the mounting opening, telescopic grooves are arranged on the opposite surfaces of the top piece, the telescopic plate is connected in a sliding manner in the telescopic grooves, adjusting holes communicated with the outside are formed in the inner walls of the telescopic grooves, the adjusting rod is connected with inner threads of the adjusting holes, the opposite ends of the adjusting rod are rotatably connected to the telescopic plate, lifting holes communicated with each other up and down are formed in the telescopic plate, the lifting bolts are connected in the lifting holes in a threaded manner, the flowmeter is conveniently and rapidly mounted by the design of the fixing mechanism, and the accuracy of a detection result is prevented from being reduced due to loosening of threads of the original structure.

As a preferable technical scheme of the utility model, an annular groove is arranged on the inner wall of the fixed ring, a positioning hole which is communicated with the annular groove and the outside is arranged on the fixed ring, a jackscrew is connected in the positioning hole in a threaded manner, a sealing ring is arranged in the annular groove, and the fixed ring is connected on the flowmeter in a sliding manner.

As a preferable technical scheme of the utility model, the top surface of the top piece is provided with an opening, and the position between the opening and the lifting hole corresponds to the position.

The utility model has the beneficial effects that: after the inner diameter of the pipeline is confirmed, the position of the fixed ring is adjusted, so that the inductive probe of the flowmeter is positioned at the upper part of the axis of the inner diameter of the pipeline, then the jackscrew is rotated, the jackscrew moves inwards, and pushes against the sealing ring, so that the fixed ring is fixed in position, then a tool is used for rotating an adjusting rod in the adjusting hole during installation, the adjusting rod pushes the telescopic plate to move towards each other to push against the top surface of the fixed ring, preliminary limiting is realized, and then the lifting bolt in the lifting hole is rotated to press the fixed ring downwards to be positioned at a proper measuring position.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Throughout the drawings, the elements or portions are not necessarily drawn to actual scale.

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic illustration of a cross-sectional structure of a seal member according to the present utility model;

FIG. 3 is a schematic diagram of a cross-sectional structure of a seal member according to the present utility model;

FIG. 4 is a schematic diagram of a cross-sectional structure of a seal member according to the present utility model;

FIG. 5 is a schematic diagram of the flow meter structure of the present utility model;

FIG. 6 is a schematic view of a cross-sectional structure of a retaining ring according to the present utility model;

FIG. 7 is a schematic cross-sectional view of a retaining ring according to the present utility model;

FIG. 8 is a schematic view of a top member of the present utility model;

FIG. 9 is a schematic diagram of a top member of the present utility model;

FIG. 10 is a schematic diagram of a top member of the present utility model.

In the figure: 1. a pipe; 2. a seal; 201. an upper seal; 20101. a first groove; 202. a lower seal; 20201. a second groove; 3. a mounting port; 4. a flow meter; 5. a fixing ring; 501. a ring groove; 502. positioning holes; 6. a seal ring; 7. a jackscrew; 8. a top piece; 801. a telescopic slot; 802. an adjustment aperture; 803. an opening; 9. a telescoping plate; 901. lifting holes; 10. an adjusting rod; 11. lifting bolts.

Detailed Description

Example 1

As shown in fig. 1 to 10, the utility model discloses an inserted thermal type gas mass flowmeter, and adopts the technical scheme that a sealing element 2 is divided into an upper group and a lower group, and the upper group and the lower group are buckled on a pipeline 1 and are tightly attached to the outer wall of the pipeline 1, so that when the flowmeter 4 is fixed, only holes are formed on the pipeline 1, the time for welding an end is saved, the sealing element 2 is tightly attached to the pipeline 1, the sealing effect of the contact surface of the sealing element 2 and the pipeline 1 is realized, and a first groove 20101 and a second groove 20201 are used for fixing the sealing element between an upper sealing element 201 and a lower sealing element 202, and then bolts and nuts are used for fixing the sealing element 2.

The fixed establishment and the installing port 3 that upper seal 201 top was equipped with for spacing fixed flowmeter, the specification of installing port 3 and the hole looks adaptation on the pipeline 1 make the probe position of flowmeter 4 insert from this, detect, sliding connection's solid fixed ring 5 on the flowmeter 4 outer wall, the locating hole 502 internal thread that is equipped with on it has jackscrew 7, cooperation between the effect of jackscrew 7 and the sealing washer 6 in the annular 501, jackscrew 7 inwards rotates, thereby make sealing washer 6 firmly hug closely on the flowmeter 4 outer wall, thereby make solid fixed ring 5 fix on flowmeter 4, the fixed ring 5 corresponds with the position between the installing port 3, its solid fixed ring 5 is sliding connection in installing port 3.

The fixing device at the top of the upper sealing piece 201 controls the expansion plate 9 to move towards the opposite surface under the limit of the expansion groove 801 when the adjusting rod 10 in the adjusting hole 802 is rotated, so that the expansion plate 9 is primarily contacted with the outer wall of the flowmeter 4, the bottom surface of the expansion plate 9 is propped against the top surface of the fixed ring 5, the primary limit is realized, and then the fixed ring 5 is extruded downwards by the lifting bolt 11 in the lifting hole 901 through the lifting bolt 11, so that the fixed ring 5 and the flowmeter 4 are limited and fixed.

The top of the top member 8 is provided with a U-shaped opening 803 which serves to extend the gauge of the lifting bolt 11 and to allow for the use of longer lifting bolts 11.

The working principle of the utility model is as follows: the fixing of the sealing element 2 is achieved by aligning the mounting opening 3 on the upper sealing element 201 with the hole on the pipeline 1, then aligning the lower sealing element 202 with the upper sealing element 201, placing bolts and nuts into the first groove 20101 and the second groove 20201 respectively, enabling the upper sealing element 201 and the lower sealing element 202 to be assembled, then adjusting the position of the fixing ring 5 on the flowmeter 4 according to the inner diameter of the pipeline 1, fixing the fixing ring 5 in a proper position by rotating the jackscrew 7 in the positioning hole 502, pushing the sealing ring 6 in the annular groove 501 by the jackscrew 7, then inserting the flowmeter 4 into the hole, placing the fixing ring 5 in the mounting opening 3, then rotating the adjusting rod 10 in the adjusting hole 802, connecting the adjusting rod 10 in the adjusting hole 802 by threads, pushing the telescopic plate 9 to move in the telescopic groove 801, enabling the telescopic plate 9 to fix the flowmeter 4 and the fixing ring 5, and then rotating the lifting bolt 11 in the lifting hole 901, and finally installing and fixing.

The circuit or the mechanical connection involved in the utility model is a conventional means adopted by the person skilled in the art, and the technical teaching can be obtained through limited tests, which belongs to common general knowledge.

The components not described in detail herein are prior art.

Although the specific embodiments of the present utility model have been described in detail, the present utility model is not limited to the above embodiments, and various changes and modifications without inventive labor may be made within the scope of the present utility model without departing from the spirit of the present utility model, which is within the scope of the present utility model.

Claims (5)

1. The utility model provides an bayonet hot type gas mass flowmeter, includes pipeline (1), flowmeter (4) are connected on pipeline (1), its characterized in that: the pipeline (1) is provided with a hole, the sealing element (2) is arranged at the position of the hole, the sealing element (2) is provided with a mounting opening (3) matched with the hole, the flowmeter (4) penetrates through the mounting opening (3) and the hole to be inserted into the sealing element (2), the sealing element (2) is provided with a fixing mechanism, and the fixing mechanism is connected with the flowmeter (4).

2. An inserted thermal gas mass flow meter as claimed in claim 1, wherein: the sealing element (2) comprises an upper sealing element (201) and a lower sealing element (202), wherein the upper sealing element (201) and the lower sealing element (202) are both shells, opposite faces of the upper sealing element and the lower sealing element are matched with the outer wall of the pipeline (1), a first groove (20101) is formed in the outer wall of the upper sealing element (201), a second groove (20201) is formed in the outer wall of the lower sealing element (202), the first groove (20101) and the second groove (20201) are in corresponding positions and are communicated with each other, and the first groove (20101) and the second groove (20201) are connected through bolts and nuts.

3. An inserted thermal gas mass flow meter as claimed in claim 2, wherein: fixed establishment includes solid fixed ring (5), top piece (8), expansion plate (9), adjusts pole (10), lift bolt (11), gu fixed ring (5) can dismantle connect on flowmeter (4) just gu the diameter of gu fixed ring (5) with diameter looks adaptation of installing port (3), the both sides of installing port (3) are equipped with bilateral symmetry's top piece (8), the opposite face of top piece (8) is equipped with expansion groove (801), sliding connection has in expansion groove (801) expansion plate (9), be equipped with external regulation hole (802) of intercommunication on expansion groove (801) inner wall, regulation hole (802) internal thread connection have adjust pole (10), the opposite end rotation of adjusting pole (10) is connected on expansion plate (9), be equipped with lifting hole (901) of intercommunication from top to bottom on expansion plate (9), internal thread connection has lift bolt (11).

4. A plug-in thermal gas mass flow meter as claimed in claim 3, wherein: the utility model discloses a flowmeter, including fixed ring (5), flowmeter (4) and fixed ring, be equipped with annular (501) on the inner wall of fixed ring (5), be equipped with intercommunication annular (501) and external locating hole (502) on fixed ring (5), threaded connection has jackscrew (7) in locating hole (502), install sealing washer (6) in annular (501), fixed ring (5) sliding connection is in flowmeter (4).

5. A plug-in thermal gas mass flow meter as claimed in claim 3, wherein: an opening (803) is formed in the top surface of the top piece (8), and the position between the opening (803) and the lifting hole (901) corresponds to the position.