CN212254964U - High-accuracy double-flange differential pressure type densimeter - Google Patents

Abstract

The utility model discloses a two flange differential pressure densimeters that rate of accuracy is high, including the forced induction diaphragm, protection device is all installed to the surface of every forced induction diaphragm, and every protection device all is provided with the response room, and every protection device's side still is provided with the entry or leads to the groove through the polishing processing, and the last inner wall that entry or lead to the groove is parallel with lower inner wall, and every forced induction diaphragm welds entry or lead to the groove with between the response room, the forced induction diaphragm is difficult to receive the impact force suddenly, and the pressure value that this densimeter recorded is more close actual pressure value, and measuring result is more accurate, even if the surveyed material is very sharp-pointed, and the forced induction diaphragm is also difficult to damage, and the life of this densimeter is longer.

Description

High-accuracy double-flange differential pressure type densimeter

Technical Field

The utility model relates to a densimeter, especially a high double flange differential pressure densimeter of rate of accuracy.

Background

As shown in fig. 1, this is a conventional densimeter, in which a pressure sensing diaphragm of the densimeter is directly externally disposed (directly externally disposed means that the pressure sensing diaphragm is directly exposed on a surface), when a substance to be measured directly impacts the surface of the pressure sensing diaphragm, a measured pressure value will be larger than an actual pressure value, a measurement result is much larger than an actual result, accuracy is very low, if the substance to be measured is relatively sharp (such as mortar), the pressure sensing diaphragm will be very easily damaged when the substance to be measured flows, and service life of the densimeter is not long, and in addition, when the substance to be measured is attached to an outer surface of the pressure sensing diaphragm, the pressure sensing diaphragm may be corroded, and measurement accuracy of the pressure sensing diaphragm may also be reduced.

Disclosure of Invention

In order to overcome the not enough of prior art, the utility model provides a long service life's high double flange differential pressure densimeter of rate of accuracy.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides a high two flange differential pressure densitometer of rate of accuracy, includes the forced induction diaphragm, and the surface of every forced induction diaphragm is provided with the arc arch, and protection device is all installed to the surface of every forced induction diaphragm, and every protection device all is provided with the response room, and every protection device's side still is provided with the entry or leads to the groove through polishing processing, the last inner wall that enters the mouth or lead to the groove is parallel with lower inner wall, every forced induction diaphragm weld the entry or lead to the groove with between the response room.

The protection device is in threaded connection with a flange plate.

Be equipped with pressure sensor in the protection device, pressure sensor is connected with a controller electricity through waterproof wire, the controller is provided with the display screen, the controller is installed in a waterproof casing, waterproof casing installs and is convenient for observe the transparent panel of display screen.

The protection device is made of Hastelloy metal or 316L metal.

The pressure sensors are multiple, each pressure sensor is respectively positioned in different protection devices, and one protection device corresponds to one flange.

The protection device is a protection cover.

Each flange plate is provided with a plurality of flowing through grooves.

The utility model has the advantages that: the outer surface mounting of forced induction diaphragm has protection device, and the forced induction diaphragm is difficult to receive the impact force suddenly, and the pressure value that this densimeter surveyed is closer to actual pressure value, and measuring result is more accurate, even if the material of measuration is very sharp-pointed, the forced induction diaphragm is difficult to damage yet, and the life of this densimeter is longer.

In addition, the inside that enters the mouth or lead to the groove is smooth, and goes up the inner wall and parallel with lower inner wall for the material of measurand is difficult to adhere to the surface of forced induction diaphragm, and the forced induction diaphragm is difficult to corroded, and life is longer, because the material of measurand is difficult to adhere to the surface of forced induction diaphragm, the pressure value that this densimeter was surveyed more is close actual pressure value, and the measuring result is more accurate.

Drawings

The present invention will be further explained with reference to the drawings and examples.

FIG. 1 is a schematic diagram of the structure of a prior art densitometer;

fig. 2 is a schematic structural diagram of the present invention.

Detailed Description

Referring to fig. 2, a high-accuracy dual-flange differential densitometer comprises pressure sensing diaphragms 10, wherein an arc-shaped protrusion is arranged on the surface of each pressure sensing diaphragm 10, a protection device 11 is arranged on the outer surface of each pressure sensing diaphragm 10, each protection device 11 is provided with a sensing chamber, an inlet or a through groove subjected to polishing treatment is further arranged on the side surface of each protection device 11, the upper inner wall and the lower inner wall of the inlet or the through groove are parallel, each pressure sensing diaphragm 10 is welded between the inlet or the through groove and the sensing chamber (the sensing chamber is a sealed space provided with a pressure sensor, the sensing chamber is a through groove of the lower half part mentioned below and is sealed by the pressure sensing diaphragm and a flange plate), so that the inlet or the through groove is separated from the sensing chamber, reinforcing ribs are further arranged at the welding position of the pressure sensing diaphragms 10, and the strength of the welding position is, the forced induction diaphragm is difficult to receive the impact force suddenly, the pressure value that this densimeter surveyed is closer to actual pressure value, measuring result is more accurate, even if the material of measurand is very sharp-pointed, the forced induction diaphragm is difficult for damaging yet, the life of this densimeter is longer, the quantity of forced induction diaphragm 10 is two, the inside of entry or recess is more smooth, make the material of measurand be difficult to attach to the surface of forced induction diaphragm, the forced induction diaphragm is difficult to be corroded, long service life, because the material of measurand is difficult to attach to the surface of forced induction diaphragm, the pressure value that this densimeter surveyed is more close actual pressure value, measuring result is more accurate, the forced induction diaphragm also is through polishing treatment, the arc arch can increase the area of contact of forced induction diaphragm and testee, make the result of detection more accurate.

The protection device 11 is in threaded connection with a flange 12, and the assembly is simple, so that the induction chamber is completely sealed, and the material of the flange is the same as that of the protection device.

The protection device 11 is internally provided with a pressure sensor (i.e. a pressure sensor in the sensing chamber), the pressure sensor is electrically connected with a controller 14 through a waterproof wire 13, the controller 14 is provided with a display screen 15, the controller 14 is installed in a waterproof shell, the waterproof shell is provided with a transparent panel which is convenient for observing the display screen 15, the waterproof wire 13 is provided with an analog-digital converter or the controller 14 is integrated with an analog-digital converter, the pressure sensor outputs an analog signal, the analog-digital converter is used for converting data types, namely converting the analog signal into a digital signal, the controller 14 is provided with a driving power supply and is used for controlling the whole densimeter and calculating results, the analog-digital converter outputs a digital signal, the controller 14 converts the digital signal into a corresponding density result, the display screen 15 is used for displaying data, and the waterproof shell comprises two cover bodies, the fixed screw and the nut fix two covers as waterproof shell, the fixed screw is sleeved with a spring, the sealing performance of the waterproof shell can be greatly improved, the transparent panel is glass, the waterproof shell is provided with a groove with a large outside and a small inside, the transparent panel is arranged in the groove, the transparent panel is covered by the fixed panel, and the fixed panel is fixed by the screw.

The protection device 11 is made of Hastelloy metal or 316L metal, is strong in corrosion resistance and high in strength, is not easy to damage, and can prolong the service life of the protection device 11.

The pressure sensors are multiple, each pressure sensor is respectively located in different protection devices 11, one protection device 11 corresponds to one flange 12, each pressure sensor is independent, the multiple pressure sensors can obtain multiple density data, and more information can be obtained by utilizing the density data, such as where the density is large and where the density is small.

Protection device 11 is the safety cover, and the safety cover is not integrated into one piece, comprises first half and the latter half, and the junction of first half and the latter half is the welding, and the material of first half is the same with the material of latter half to convenient welding, the position of forced induction diaphragm 10 is the boundary department of first half and the latter half promptly, and the safety cover comprises two parts, conveniently polishes entry or recess, reduces the production degree of difficulty, and first half includes front panel part and coupling part, and the inside of latter half is provided with logical groove (response room promptly), and the surface of latter half is provided with the screw thread (through the screw thread with the screw hole threaded connection of ring flange).

Each flange plate 12 is provided with a plurality of flowing through grooves, and each flange plate 12 is polished, so that the measured object cannot be attached to the flange plate 12, and the influence of the flange plate on the flowability of the measured object is prevented.

The technical principle of the densimeter is the same as that of the prior art, for example, if a pressure value at one position is measured as P1, then formula 1 is P1 ═ ρ gH1+ P0, ρ represents the density of the measured object, g represents the gravity acceleration, H1 represents the height difference between the position and the reference line, P0 represents the atmospheric pressure, and then a pressure value at another position is measured as P2, then formula 2 is P2 ═ ρ gH2+ P0, ρ represents the density of the measured object, g represents the gravity acceleration, H2 represents the height difference between the position and the reference line, formula 1 subtracts formula 2 to obtain formula 3, formula 3 is P1-P2 ═ ρ g (H1-H2), and the difference between H1 and H2 represents the height difference between the two positions, thereby calculating the density of the measured object.

The above embodiments do not limit the scope of the present invention, and those skilled in the art can make equivalent modifications and variations without departing from the overall concept of the present invention.

Claims (7)

1. The utility model provides a high two flange differential densitometer of rate of accuracy, includes forced induction diaphragm (10), and the surface of every forced induction diaphragm (10) is provided with the arc arch, and protection device (11) are all installed to the surface of every forced induction diaphragm (10) of its characterized in that, and every protection device (11) all are provided with the induction chamber, and the side of every protection device (11) still is provided with through the entry or the logical groove of polishing processing, the last inner wall that enters the mouth or lead to the groove is parallel with lower inner wall, every forced induction diaphragm (10) weld the entry or lead to the groove with between the induction chamber.

2. The high accuracy, dual flange differential densitometer of claim 1, wherein the guard (11) is threadably connected to one of the flanges (12).

3. The high accuracy dual flange differential densitometer of claim 2, wherein the protection device (11) is provided with a pressure sensor electrically connected to a controller (14) by a waterproof wire (13), the controller (14) is provided with a display screen (15), the controller (14) is mounted in a waterproof housing, the waterproof housing is mounted with a transparent panel for viewing the display screen (15).

4. The differential densitometer of claim 3, with high accuracy, characterized by the protection device (11) being made of hardmetal or 316L metal.

5. The high accuracy, dual flange differential densitometer of claim 4, wherein there are a plurality of pressure sensors, each pressure sensor being located in a different one of the protective devices (11), one protective device (11) corresponding to one of the flanges (12).

6. The high accuracy, dual flange differential densitometer of claim 5, characterized in that the protective device (11) is a protective cover.

7. The high accuracy, dual flange differential densitometer of claim 6, wherein each flange (12) has a plurality of flow channels disposed therein.

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