CN215639612U

CN215639612U - Anti-seismic thermal gas mass flow meter

Info

Publication number: CN215639612U
Application number: CN202120416233.5U
Authority: CN
Inventors: 王长标
Original assignee: Hanyue Instrument Shanghai Co ltd
Current assignee: Hanyue Instrument Shanghai Co ltd
Priority date: 2021-02-25
Filing date: 2021-02-25
Publication date: 2022-01-25
Anticipated expiration: 2031-02-25

Abstract

The utility model discloses an anti-seismic thermal gas mass flowmeter, which comprises an upper cover plate, a lower cover plate and an arc-shaped sealing plate, wherein the upper cover plate is provided with a plurality of arc-shaped sealing plates; the utility model discloses a gas mass flow meter of antidetonation type, including upper cover plate, arc closing plate, sensor subassembly, the outer side upper end of upper cover plate, the outer side upper end middle part of upper cover plate is equipped with the operation mouth, the arc closing plate sets up the inside at the operation mouth, the outer side upper end left and right sides of upper cover plate all is equipped with the locating support, the lateral surface sliding connection of locating support has the slider, the lateral surface upper end fixedly connected with rectangle locating plate of locating support, this gaseous mass flow meter of antidetonation type heat type, can install optional position on the pipe fitting, sensor subassembly adopts the flexible coupling, can effectively weaken the harm that the vibrations were strikeed and are brought, the setting of upper cover plate is closed to the lower cover plate, make on the pipe fitting of different thicknesses can be installed to this device, can combine upper cover plate pressfitting to compress tightly at the surface of pipe fitting with lower cover plate through positioning bolt, can carry out lifting adjustment to cavity pole in the cylindricality through the double-screw, the setting of scale pole has made things convenient for the location of cavity pole in the cylindricality.

Description

Anti-seismic thermal gas mass flow meter

Technical Field

The utility model relates to the technical field of thermal gas mass flowmeters, in particular to an anti-seismic thermal gas mass flowmeter.

Background

The working principle of the thermal gas mass flowmeter is that a constant power, namely a constant current source, is adopted to heat a sensor to generate a certain constant temperature, and the sensor is always higher than the change temperature of a gas medium in the surrounding environment by a certain constant temperature difference. The quantity of heat taken away by the sensor when gas molecules flow is in direct proportion to the flow velocity, the flow rate and the quantity of the gas molecules of gas fluid, the resistance value of the thermistor sensor is reduced, meanwhile, the heating sensor automatically supplements the heat taken away by the gas molecules, energy and time are needed for supplementing the heat by the sensor, the temperature difference of the sensor is not supplemented to reach static thermal balance in the time, and the voltage converted by the temperature difference and the resistance value of the sensor changes along with the change of the density, the flow velocity and the flow rate of the gas molecules in the pipeline, namely constant temperature difference. The measuring circuit is an analog circuit signal processing which grasps the voltage difference signal converted by the constant temperature difference, calculates and amplifies the voltage difference signal by adding, subtracting, multiplying and dividing and opening the 1/4 th power instrument chip and obtains a thermal resistance nonlinear signal.

Thermal type gas mass flow meter among the prior art can only install the tip of pipe fitting when the installation on the pipe fitting, and unable installation at will, simultaneously, when the air duct produced vibrations because gas flow sharply changes, can lead to thermal type gas mass flow meter also to shake, and when these vibrations impact can influence the measurement accuracy of sensor, when serious, can lead to the sensor malfunctioning.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art, and provides an anti-seismic thermal gas mass flow meter which can be arranged at any position on a pipe fitting, and a sensor assembly adopts flexible connection, so that the damage caused by vibration impact can be effectively weakened, and the problems in the background art can be effectively solved.

In order to achieve the purpose, the utility model provides the following technical scheme: an anti-seismic thermal gas mass flowmeter comprises an upper cover plate, a lower cover plate and an arc-shaped sealing plate; the utility model discloses a cover plate, including the upper shield plate, the arc closing plate, the upper shield plate is equipped with the operation mouth in the middle part of the lateral surface upper end, the arc closing plate sets up the inside at the operation mouth, and the lateral surface upper end left and right sides of upper shield plate all is equipped with the locating support, and the lateral surface sliding connection of locating support has the slider, and the lateral surface upper end fixedly connected with rectangle locating plate of locating support, rectangle locating plate are connected with the double-screw bolt through the screw hole that sets up in its upper surface middle part, and the lower terminal surface of double-screw bolt rotates with the upper surface of slider to be connected, and the lower fixed surface of slider is connected with the gauge outfit, and the lateral surface lower extreme of gauge outfit is provided with the cavity pole in the cylindricality, the lateral surface upper end middle part of arc closing plate is equipped with sealing sleeve, and the cavity pole in the cylindricality passes sealing sleeve setting.

Furthermore, both sides all are equipped with first mounting panel around the lateral surface lower extreme of last cover plate, and both sides all are equipped with the second mounting panel around the lateral surface upper end of lower cover plate, and first mounting panel passes through positioning bolt and second mounting panel fixed connection.

Furthermore, a hand wheel is arranged at the upper end of the outer side face of the stud.

Furthermore, the rectangular positioning plate is sleeved with a scale rod through a through hole formed in the upper surface of the rectangular positioning plate, and the lower end face of the scale rod is fixedly connected with the upper surface of the sliding block.

Furthermore, the cylindrical hollow rod is connected with the sealing sleeve in a sealing mode through a multi-layer sealing ring.

Compared with the prior art, the utility model has the beneficial effects that: this antidetonation type hot type gas mass flow meter can install optional position on the pipe fitting, and sensor module adopts the flexible coupling, can effectively weaken the harm that vibrations were strikeed and are brought, and the setting of cover plate is closed to lower cover plate for on the pipe fitting of different thicknesses can be installed to this device, can combine cover plate to compress tightly at the surface of pipe fitting down through positioning bolt, can carry out lift adjustment to cavity pole in the cylindricality through the double-screw bolt, and the setting of scale rod has made things convenient for the location of cavity pole in the cylindricality.

Drawings

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

fig. 2 is a front view of the present invention.

In the figure: the device comprises a hand wheel 1, a positioning support 2, a sliding block 3, a gauge outfit 4, a lower cover plate 5, a first mounting plate 6, an operation opening 7, a second mounting plate 8, a positioning bolt 9, an upper cover plate 10, an arc-shaped sealing plate 11, a stud 12, a rectangular positioning plate 13, a cylindrical hollow rod 14, a sealing sleeve 15 and a scale rod 16.

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. (for the convenience of description and understanding, the upper part of fig. 2 is described as the upper part), and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

In the description of the present invention, if an orientation description is referred to, for example, the orientations or positional relationships indicated by "upper", "lower", "front", "rear", "left", "right", etc. are based on the orientations or positional relationships shown in the drawings, only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. When a feature is referred to as being "disposed," "secured," or "connected" to another feature, it can be directly disposed, secured, or connected to the other feature or be indirectly disposed, secured, or connected to the other feature.

Referring to fig. 1-2, the present invention provides a technical solution: an anti-seismic thermal gas mass flowmeter comprises an upper cover plate 10, a lower cover plate 5 and an arc-shaped sealing plate 11; the front side and the rear side of the lower end of the outer side of an upper cover plate 10 are respectively provided with a first mounting plate 6, the front side and the rear side of the upper end of the outer side of a lower cover plate 5 are respectively provided with a second mounting plate 8, the first mounting plates 6 are fixedly connected with the second mounting plates 8 through positioning bolts 9, the lower cover plate 5 is combined with the upper cover plate 10, so that the device can be mounted on pipe fittings with different thicknesses, the lower cover plate 5 can be tightly pressed on the outer surface of the pipe fitting together with the upper cover plate 10 through the positioning bolts 9, the middle part of the upper end of the outer side of the upper cover plate 10 is provided with an operation opening 7, an arc-shaped sealing plate 11 is arranged inside the operation opening 7, the left side and the right side of the upper end of the outer side of the upper cover plate 10 are respectively provided with a positioning bracket 2, the outer side of the positioning bracket 2 is slidably connected with a slide block 3, the upper end of the positioning bracket 2 is fixedly connected with a rectangular positioning plate 13, the rectangular positioning plate 13 is connected with a stud 12 through a threaded hole arranged in the middle part of the upper surface, the upper end of the outer side surface of a stud 12 is provided with a hand wheel 1, the lower end surface of the stud 12 is rotatably connected with the upper surface of a sliding block 3, a rectangular positioning plate 13 is sleeved with a scale rod 16 through a through hole arranged on the upper surface of the rectangular positioning plate, the lower end surface of the scale rod 16 is fixedly connected with the upper surface of the sliding block 3, the arrangement of the scale rod 16 facilitates the positioning of a cylindrical hollow rod 14, the lower surface of the sliding block 3 is fixedly connected with a gauge head 4, the cylindrical hollow rod 14 can be adjusted in a lifting way through the stud 12, a control unit and a display unit are arranged inside the gauge head 4, the lower end of the outer side surface of the gauge head 4 is provided with a cylindrical hollow rod 14, the middle part of the upper end of the outer side surface of an arc-shaped sealing plate 11 is provided with a sealing sleeve 15, the cylindrical hollow rod 14 penetrates through the sealing sleeve 15, the cylindrical hollow rod 14 is connected with the sealing sleeve 15 in a sealing way through a plurality of sealing rings, and a sensor assembly is arranged inside the cylindrical hollow rod 14, the control unit controls the display unit and the sensor assembly to work by adopting a common method in the prior art, the anti-seismic thermal gas mass flowmeter can be arranged at any position on a pipe fitting, and the sensor assembly is in flexible connection, so that the damage caused by shock impact can be effectively weakened.

When in use: firstly, the outer surface of a pipe fitting is required to be provided with a hole during installation, the diameter of the hole is required to allow a cylindrical hollow rod 14 to pass through, an arc-shaped sealing plate 11 is welded at the hole of the pipe fitting, during welding, the cylindrical hollow rod 14 is ensured to penetrate through a sealing sleeve 15 and be inserted into the hole, an upper cover plate 10 and a lower cover plate 5 are installed on the outer surface of the pipe fitting through a positioning bolt 9, a stud 12 is rotated through a hand wheel 1, the stud 12 presses a gauge head 4 downwards to send the cylindrical hollow rod 14 into the inside of the pipe fitting, a sensor assembly enters the inside of the pipe fitting along with the cylindrical hollow rod 14, when the pipe fitting vibrates, the cylindrical hollow rod 14 provided with the sensor assembly is not fixedly connected with the sealing sleeve 15, the cylindrical hollow rod 14 can slightly move upwards and downwards, and the sensor assembly installed inside the cylindrical hollow rod 14 can be obviously weakened by vibration impact.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a antidetonation type hot type gas mass flow meter which characterized in that: comprises an upper cover plate (10), a lower cover plate (5) and an arc-shaped sealing plate (11); an operation opening (7) is formed in the middle of the upper end of the outer side face of the upper cover plate (10), the arc-shaped sealing plate (11) is arranged inside the operation opening (7), the left side and the right side of the upper end of the outer side face of the upper cover plate (10) are respectively provided with a positioning support (2), the outer side face of each positioning support (2) is connected with a sliding block (3) in a sliding manner, the upper end of the outer side face of each positioning support (2) is fixedly connected with a rectangular positioning plate (13), the rectangular positioning plate (13) is connected with a stud (12) through a threaded hole formed in the middle of the upper surface of the rectangular positioning plate, the lower end face of the stud (12) is rotatably connected with the upper surface of the sliding block (3), the lower surface of the sliding block (3) is fixedly connected with a meter head (4), and a cylindrical hollow rod (14) is arranged at the lower end of the outer side face of the meter head (4), the middle part of the upper end of the outer side face of the arc-shaped sealing plate (11) is provided with a sealing sleeve (15), and a cylindrical hollow rod (14) penetrates through the sealing sleeve (15).

2. An anti-seismic thermal gas mass flowmeter according to claim 1, characterized by: both sides all are equipped with first mounting panel (6) around the lateral surface lower extreme of last cover plate (10), and both sides all are equipped with second mounting panel (8) around the lateral surface upper end of lower cover plate (5), and positioning bolt (9) and second mounting panel (8) fixed connection are passed through in first mounting panel (6).

3. An anti-seismic thermal gas mass flowmeter according to claim 1, characterized by: and a hand wheel (1) is arranged at the upper end of the outer side surface of the stud (12).

4. An anti-seismic thermal gas mass flowmeter according to claim 1, characterized by: the rectangular positioning plate (13) is sleeved with a scale rod (16) through a through hole formed in the upper surface of the rectangular positioning plate, and the lower end face of the scale rod (16) is fixedly connected with the upper surface of the sliding block (3).

5. An anti-seismic thermal gas mass flowmeter according to claim 1, characterized by: the cylindrical hollow rod (14) is connected with the sealing sleeve (15) in a sealing mode through a multi-layer sealing ring.