CN216559140U

CN216559140U - Thermal gas mass flow meter

Info

Publication number: CN216559140U
Application number: CN202123148460.3U
Authority: CN
Inventors: 杨卫香; 邱燕
Original assignee: Holey Metering Co ltd
Current assignee: Jiangsu Hualiu Instrument Co.,Ltd.
Priority date: 2021-12-15
Filing date: 2021-12-15
Publication date: 2022-05-17
Anticipated expiration: 2031-12-15

Abstract

The utility model discloses a thermal gas mass flowmeter which comprises a connecting pipe, a mounting plate and a connecting rod, wherein flange plates are mounted at two ends of the connecting pipe, the mounting plate is mounted on the outer side of each flange plate, the connecting rod penetrates through the top of the connecting pipe, a connector is mounted at the bottom end of the connecting rod, a depth marking ring is mounted at the top end of a supporting rod, and an intelligent meter head is mounted at the output end of a telescopic column through a connecting sleeve. According to the utility model, the ball valve is arranged at the top end of the connecting rod, when the meter head is cleaned and maintained, the ball valve is closed, the meter head can be replaced under the condition that gas conveying is not stopped, the ball valve is opened, gas is put into the upper part of the connecting rod, the gas flow direction in the pipeline can be measured through the flow direction mark, the measurement accuracy is improved, the depth of the temperature sensor and the speed sensor extending into the pipeline can be accurately measured through the depth mark ring, and the practicability and the convenience of the flowmeter are improved.

Description

Thermal gas mass flow meter

Technical Field

The utility model relates to the technical field of measuring equipment, in particular to a thermal gas mass flowmeter.

Background

The thermal gas mass flowmeter is an instrument for measuring gas mass flow by utilizing a thermal diffusion principle, can realize high-precision measurement of gas liquid flow, and comprises two thermal resistors, one is a speed sensor, the other is a temperature sensor for automatically compensating gas temperature change, the gas flow rate is increased, the heat taken away by a medium is increased, so that the temperature of the sensor is reduced, in order to keep the temperature constant, the working current passing through the sensor must be increased, the increased partial current is in direct proportion to the flow rate of the medium, and the result can be calculated from the current.

The prior art hot type gas mass flowmeter has the following defects:

1. the utility model discloses a comparison file CN201922503700.3 thermal type gas mass flow meter, and relates to the field of electronic equipment. This hot type gas mass flow meter has improved the mounting part of sensor and the communicating pipe connected mode of converter, and not only easy dismounting, the leakproofness has ensured moreover, effectively prevents to be surveyed the gas leakage. "generally connect it at the pipeline default opening through the flange during flowmeter installation among the prior art, but its pipeline opening distance is not good when installing is controlled, and flowmeter inside does not have filter equipment, and the impurity of mixing in the gas can influence the testing result.

2. The measuring end of the flowmeter in the prior art can not extend out to be adjusted, the flow is difficult to monitor when the flowmeter is applied to a thick pipeline and the fluid section is not full, the depth of the temperature sensor and the speed sensor extending into the pipeline can not be accurately known, and the measuring accuracy is reduced.

SUMMERY OF THE UTILITY MODEL

The present invention aims to provide a thermal gas mass flowmeter to solve the problems set forth in the background art.

In order to achieve the purpose, the utility model provides the following technical scheme: a hot type gas mass flow meter comprises a connecting pipe, a mounting plate and a connecting rod, wherein flange plates are mounted at two ends of the connecting pipe, grooves are formed in the outer sides of the flange plates, the mounting plate is mounted on the outer side of the flange plate, a connecting lug is mounted on the inner side of the mounting plate, and the connecting lug is embedded in the groove;

the top of the connecting pipe is provided with a connecting rod in a penetrating way, and the bottom end of the connecting rod is provided with a connector;

the ball valve is installed on the top of connecting rod, the bracing piece is installed to the output of ball valve, the degree of depth mark ring is installed on the top of bracing piece, flexible post is installed at the top of degree of depth mark ring, the intelligent gauge outfit is installed through adapter sleeve to the output of flexible post.

Preferably, the outer side of the flange plate is provided with a mounting hole in a penetrating manner, and the center position of the outer side of the flange plate is provided with a through hole in a penetrating manner.

Preferably, the handle is installed in the outside of mounting panel, and the internally mounted of mounting panel has the filter screen, and the filter screen cooperatees with the through-hole.

Preferably, an adjusting handle is installed on the outer side of the ball valve.

Preferably, the installation pipe is installed to the bottom of connector, and sealed the pad is installed in the outside of installation pipe, and sealed sleeve pipe is installed in the outside of sealed pad, and speedtransmitter is installed to the bottom of installation pipe, and temperature sensor is located speedtransmitter's one side.

Preferably, an adjusting bolt is installed outside the fixed end of the telescopic column in a penetrating mode.

Preferably, the front of intelligence gauge outfit is installed the cap, and the display panel is installed through the flexile mat in the inside of intelligence gauge outfit, and the back mounted of display panel has waterproof pad, and the back mounted of waterproof pad has the rubber circle.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the utility model, the ball valve is arranged at the top end of the connecting rod, when the meter head is cleaned and maintained, the ball valve is closed, the meter head can be replaced under the condition that gas conveying is not stopped, the ball valve is opened to place gas into the upper part of the connecting rod, the gas flow direction in the pipeline can be measured through the flow direction mark, the measurement accuracy is improved, the depth of the temperature sensor and the speed sensor extending into the pipeline can be accurately measured through the depth mark ring, and the depth can be directly displayed through the display panel, so that the practicability and the convenience of the flowmeter are improved.

2. According to the utility model, the sealing gasket is arranged on the outer side of the mounting pipe, the sealing sleeve is arranged on the outer side of the sealing gasket, the filter screen is arranged in the mounting plate, the sealing gasket enhances the sealing property between the sealing sleeve and the mounting pipe, meanwhile, the friction force between the sealing sleeve and the mounting pipe is increased, the gas leakage is reduced, the connection stability is improved, the filter screen not only can play a role of filtering impurities, but also can uniformly distribute airflow, so that the measurement result is more accurate.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a perspective view of the mounting plate of the present invention;

FIG. 3 is a schematic front view of the present invention;

FIG. 4 is a schematic view of a sensor connection structure according to the present invention;

fig. 5 is a schematic diagram of an internal structure of the smart meter head according to the present invention.

In the figure: 1. a connecting pipe; 101. a flange plate; 102. mounting holes; 103. a through hole; 104. a groove; 2. mounting a plate; 201. a connection bump; 202. a handle; 203. a filter screen; 3. a connecting rod; 301. a ball valve; 302. an adjusting handle; 303. a support bar; 304. a depth marking ring; 4. a connector; 401. installing a pipe; 402. a gasket; 403. sealing the sleeve; 404. a speed sensor; 405. a temperature sensor; 5. a telescopic column; 501. adjusting the bolt; 502. connecting a sleeve; 6. an intelligent meter head; 601. a shell cover; 602. a display panel; 603. a waterproof pad; 604. a rubber ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be a fixed connection or a movable connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 and fig. 2, an embodiment of the present invention: a thermal gas mass flow meter is provided,

in the first embodiment, the flowmeter comprises a connecting pipe 1, flanges 101 and a mounting plate 2, the flanges 101 are mounted at two ends of the connecting pipe 1, the flanges 101 not only provide mounting conditions for the use of the flowmeter, but also play a role of auxiliary support for the connecting pipe 1, the connecting pipe is connected to a preset opening of a pipeline through the flanges 101 during mounting, so that the connection is more stable, mounting holes 102 are formed in the outer sides of the flanges 101, the flanges 101 are mounted through the mounting holes 102, four mounting holes 102 are formed in one group of the flanges 101, so that the connection between the flanges and a pipeline to be detected is more stable, the detection precision is improved, a through hole 103 is formed in the center position of the outer side of the flanges 101, a groove 104 is formed in the outer side of the flanges 101, the through hole 103 provides conditions for the input of detection gas, the gas to be detected enters the detection cavity through the through holes 103 in two ends of the flanges 101, the mounting plate 2 is mounted on the outer side of the flanges 101, connecting convex block 201 is installed to mounting panel 2's inboard, and connecting convex block 201 and recess 104 gomphosis installation, handle 202 is installed in mounting panel 2's the outside, mounting panel 2's internally mounted has filter screen 203, and filter screen 203 cooperatees with through-hole 103, gomphosis installation between connecting convex block 201 and the recess 104, make mounting panel 2 and ring flange 101 zonulae occludens together, the leakproofness of device has been improved, mounting panel 2 internally mounted's filter screen 203 not only can play the effect of filtering impurity, can also evenly shunt the air current, make the measuring result more accurate, filter screen 203 is unanimous with through-hole 103 size, guarantee gaseous normal circulation.

Referring to fig. 1, 3 and 4, a thermal gas mass flowmeter,

embodiment two, including connecting pipe 1, connecting rod 3 and connector 4, connecting rod 3 is installed at the top of connecting pipe 1 in a penetrating manner, connecting rod 3 provides the mounted position for connector 4 and ball valve 301, ball valve 301 is installed at the top end of connecting rod 3, adjusting handle 302 is installed on the outer side of ball valve 301, support rod 303 is installed at the output end of ball valve 301, when cleaning and maintaining smart meter head 6, ball valve 301 is closed, the meter head can be replaced without stopping gas delivery, ball valve 301 is opened, the detection gas is put on the upper portion of connecting rod 3, the gas flow direction in the pipeline can be measured through the flow direction mark, the accuracy of measurement is improved, depth mark ring 304 is installed at the top end of support rod 303, depth mark ring 304 can accurately measure the depth of temperature sensor 405 and speed sensor 404 extending into the pipeline, and detection personnel can conveniently adjust the depth according to the detection need, the bottom end of the connecting rod 3 is provided with the connector 4, the bottom of the connector 4 is provided with the mounting pipe 401, the mounting between the connector 4 and the connecting rod 3 improves the stability of the flowmeter during operation, the influence on detection data caused by shaking is reduced, the outer side of the mounting pipe 401 is provided with the sealing gasket 402, the outer side of the sealing gasket 402 is provided with the sealing sleeve 403, the bottom of the mounting pipe 401 is provided with the speed sensor 404, the bottom of the mounting pipe 401 is provided with the temperature sensor 405, the temperature sensor 405 is positioned at one side of the speed sensor 404, when the speed sensor 404 and the temperature sensor 405 operate, the gas flow rate is increased, the heat taken away by media is increased, the temperature of the temperature sensor 405 is reduced, in order to keep the temperature constant, the working current passing through the temperature sensor 405 must be increased, the increased partial current is in direct proportion to the flow rate of the media, and the detection result is obtained by calculation, the sealing gasket 402 enhances the sealing performance between the sealing sleeve 403 and the mounting pipe 401, increases the friction force between the sealing sleeve 403 and the mounting pipe 401, reduces gas leakage, and improves the connection stability.

Referring to fig. 1, 3 and 5, a thermal gas mass flowmeter,

the third embodiment comprises a depth marking ring 304, a telescopic column 5 and a smart meter head 6, wherein the telescopic column 5 is installed at the top of the depth marking ring 304, an adjusting bolt 501 is installed outside the fixed end of the telescopic column 5 in a penetrating manner, the length of the telescopic column 5 can be adjusted through the adjusting bolt 501, the adjusting bolt 501 is screwed down to be fixed after the telescopic column is adjusted to a proper height, the use requirement of a detection person can be met to a greater extent, the smart meter head 6 is installed at the output end of the telescopic column 5 through a connecting sleeve 502, the connecting sleeve 502 enables the telescopic column 5 and the smart meter head 6 to be connected more stably, the detection precision is higher while the safety performance is improved, a shell cover 601 is installed on the front face of the smart meter head 6, the shell 601 plays a protection role in protecting the smart meter head 6 and a display board 602, the smart meter head 6 is prevented from being damaged due to an accident, the display board 602 is installed inside the smart meter head 6 through a flexible pad, the back mounted of display panel 602 has waterproof pad 603, and the back mounted of waterproof pad 603 has rubber circle 604, installs display panel 602 through the flexbile cushion, can play the effect of shock attenuation buffering to it, has prolonged life, and the installation of waterproof pad 603 makes the inside water-proof effects that has of smart meter head 6, has avoided because of the damage that the water intake led to the fact electronic component, can satisfy the user demand of measurement personnel under different environment.

The working principle is as follows: when the device is used, the two ends of the connecting pipe 1 are connected with the flange plate 101, then the flange plate 101 and the mounting plate 2 are connected together through the embedded installation of the groove 104 and the connecting bump 201, so that the through hole 103 is matched with the dust screen 203, then the mounting hole 102 is connected, the installation between the flowmeter base and a preset pipeline is completed, the length of the telescopic column 5 is adjusted through the adjustment 501, the overall height adjustment of the flowmeter is further completed, then the gas to be detected is filtered and shunted through the filter screen 203, the speed measurement sensor 404 and the temperature sensor 405 work, the gas flow rate is increased, the heat taken away by media is increased, the temperature of the temperature sensor 405 is reduced, in order to keep the temperature constant, the working current passing through the temperature sensor 405 must be increased, the increased partial current is in direct proportion to the flow rate of the media, and the detection result is obtained through calculation, the detection result can be directly reflected on the display panel 602, the flowmeter is more convenient to use, the use requirement of detection personnel can be met, and the detection quality is further improved while the working efficiency is improved.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A thermal gas mass flowmeter comprises a connecting pipe (1), a mounting plate (2) and a connecting rod (3), wherein flanges (101) are mounted at two ends of the connecting pipe (1), a groove (104) is formed in the outer side of each flange (101), the mounting plate (2) is mounted on the outer side of each flange (101), a connecting bump (201) is mounted on the inner side of each mounting plate (2), and the connecting bumps (201) and the grooves (104) are installed in an embedded mode;

the top of the connecting pipe (1) is provided with a connecting rod (3) in a penetrating way, and the bottom end of the connecting rod (3) is provided with a connector (4);

ball valve (301) are installed on the top of connecting rod (3), bracing piece (303) are installed to the output of ball valve (301), degree of depth sign ring (304) are installed to the top of bracing piece (303), flexible post (5) are installed at the top of degree of depth sign ring (304), intelligent gauge outfit (6) are installed through connecting tube (502) to the output of flexible post (5).

2. The thermal gas mass flow meter according to claim 1, characterized in that: the outer side of the flange plate (101) is provided with a mounting hole (102) in a penetrating mode, and the center position of the outer side of the flange plate (101) is provided with a through hole (103) in a penetrating mode.

3. The thermal gas mass flow meter according to claim 1, characterized in that: handle (202) are installed in the outside of mounting panel (2), and the internally mounted of mounting panel (2) has filter screen (203), and filter screen (203) and through-hole (103) cooperate.

4. The thermal gas mass flow meter according to claim 1, characterized in that: and an adjusting handle (302) is arranged on the outer side of the ball valve (301).

5. The thermal gas mass flow meter according to claim 1, characterized in that: installation pipe (401) is installed to the bottom of connector (4), and sealed pad (402) are installed in the outside of installation pipe (401), and sealed sleeve (403) are installed in the outside of sealed pad (402), and speedtransmitter (404) is installed to the bottom of installation pipe (401), and temperature sensor (405) are located one side of speedtransmitter (404).

6. The thermal gas mass flowmeter of claim 1, characterized in that: adjusting bolts (501) are installed on the outer side of the fixed end of the telescopic column (5) in a penetrating mode.

7. The thermal gas mass flow meter according to claim 1, characterized in that: the front of intelligence gauge outfit (6) is installed shell cover (601), and display panel (602) are installed through the flexbile pad in the inside of intelligence gauge outfit (6), and the back mounted of display panel (602) has waterproof pad (603), and the back mounted of waterproof pad (603) has rubber circle (604).