CN110793579B

CN110793579B - Balance flowmeter

Info

Publication number: CN110793579B
Application number: CN201910937752.3A
Authority: CN
Inventors: 不公告发明人
Original assignee: Tianjin Sure Instrument Science & Technology Co ltd
Current assignee: TIANJIN SURE INSTRUMENT SCIENCE & TECHNOLOGY Co.,Ltd.
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2020-10-02
Anticipated expiration: 2039-09-30
Also published as: CN110793579A

Abstract

The invention discloses a balance flowmeter which comprises a pipe body, wherein the top of the pipe body is communicated with a first long pipe, the inner wall of a rubber ring is provided with a dust removal mechanism, the top and the lower part of the inner wall of a second flange are both provided with grooves, and the inner wall of each groove is fixedly connected with a rubber sleeve. This balance flowmeter, through the filter, the cooperation of square slab and diaphragm, make this balance flowmeter can work in the relatively poor place of environment, need not clean at the air, the dust is few, the relative temperature is low, natural draft is good, avoid being close to the place work that gives off the dust, through the body groove, the cooperation of heater strip and water intaking valve, make this balance flowmeter internal temperature can adjust, and then make this balance flowmeter can be less than 0 degree in winter, should be higher than normal work under the temperature of 45 degrees summer, prevent this balance flowmeter and exceed the temperature range work, it is inaccurate to cause balance flowmeter to calculate the flow numerical value in the pipeline.

Description

Balance flowmeter

Technical Field

The invention relates to the technical field of balance flowmeters, in particular to a balance flowmeter.

Background

The balance flowmeter is a revolutionary differential pressure type flow meter, the working principle of the balance flowmeter is the same as that of other differential pressure type flowmeters, the balance flowmeter is based on the energy conversion principle in a sealed pipeline, and the flow in the pipeline is in direct proportion to the square root of differential pressure under the condition of ideal fluid; the flow in the pipeline can be calculated according to the Bernoulli equation by measuring the differential pressure value. Although current balance flowmeter can realize calculating the flow in the pipeline, but there is the balance flowmeter and need clean at the air, and the dust is few, and relative temperature is low, and natural draft is good www.cechina.cn, avoids being close to the place work that gives off the dust, can't work in the relatively poor place of environment, and the requirement is too high to operational environment for the unable problem of comprehensive popularization of balance flowmeter, and the ambient temperature of balance flowmeter work, winter should be higher than 0 degree, summer should be less than 45 degrees. Operating outside the temperature range can cause inaccuracies in the flow value in the balance flow calculation pipeline.

Disclosure of Invention

The invention aims to provide a balance flowmeter, which solves the problems that although the existing balance flowmeter in the background art can calculate the flow in a pipeline, the balance flowmeter needs to work in places with clean air, less dust, low relative temperature, good natural ventilation www.cechina.cn, poor environment and too high requirement on working environment, cannot work in places with poor environment and cannot be comprehensively popularized, and the working environment temperature of the balance flowmeter is higher than 0 ℃ in winter and lower than 45 ℃ in summer. Operating outside the temperature range can cause the problem of inaccurate flow value in the balance flow calculation pipeline.

In order to achieve the purpose, the invention provides the following technical scheme: a balance flowmeter comprises a pipe body, wherein the top of the pipe body is communicated with a first long pipe, the top of the pipe body is communicated with a second long pipe, three valve groups are fixedly connected to the tops of the first long pipe and the second long pipe, an adjusting mechanism is arranged inside the pipe body, a flow blocking mechanism is arranged on the inner wall of the pipe body, rubber pads are fixedly connected to the left side end face and the right side end face of the pipe body, two vertical blocks are fixedly connected to the top and the bottom of the pipe body, a first flange is attached to the right side of the pipe body, a first bolt is connected to the top of the first flange and the right side of the bottom through a uniform thread, the left side outer wall of the first bolt is in threaded connection with the vertical blocks on the right side of the top of the pipe body, a nut is connected to the left side outer wall of the first bolt through a thread, a second flange is attached to the left side of the pipe body, the right side outer wall of first bolt links to each other with the top of body and the left perpendicular piece screw thread in bottom, the right side outer wall screw thread of first bolt links to each other has the nut, second flange outer wall processing has two through-holes, the inner wall rigid coupling of through-hole has the rubber circle, the inner wall of rubber circle is equipped with dust removal mechanism, the inner wall processing of second flange has two recesses, the inner wall rigid coupling of recess has the rubber sleeve.

Preferably, the through hole corresponds to the groove.

Preferably, the through holes at the top and the bottom of the second flange are not in the same straight line.

Preferably, the flow blocking mechanism comprises a circular plate, a first round hole and a second round hole, the circular plate is fixedly connected to the inner wall of the pipe body, the first round hole is machined in the left end face of the circular plate, and the second round hole is machined in the left end face of the circular plate.

Preferably, the first circular hole is located at the center of the circular plate.

Preferably, the second round holes are distributed at an angle of 60 degrees between every two round holes.

Preferably, the adjusting mechanism comprises a water inlet valve, a water outlet valve, a pipe body groove and heating wires, the pipe body groove is formed in the pipe body, the left side of the bottom of the pipe body groove is communicated with the water inlet valve, the right side of the bottom of the pipe body groove is communicated with the water outlet valve, and the top of the pipe body groove is fixedly connected with the heating wires.

Preferably, the dust removal mechanism comprises a pin shaft, a transverse block, a transverse plate, a second pin shaft, a square plate and a filter plate, wherein the transverse block is fixedly connected to the top and the bottom of the second flange, the outer side of the transverse block is rotatably connected with the square plate through the pin shaft, a second bolt is in clearance fit with the outer side of the square plate, the outer wall of the second bolt is in threaded connection with the outer wall of the second flange, the square plate is in interference fit with the inner wall of the rubber ring, the square plate is sleeved on the inner wall of the rubber ring, the outer wall of the square plate is in interference fit with the inner wall of the rubber ring, the filter plate is fixedly connected to the inner wall of the square plate, and the inner side of the transverse plate and the outer side of.

Compared with the prior art, the invention has the beneficial effects that: this balance flowmeter, through the filter, the cooperation of square slab and diaphragm, make this balance flowmeter can work in the relatively poor place of environment, need not clean at the air, the dust is few, relative temperature is low, natural draft is good www.cechina.cn, avoid being close to the place work that gives off the dust, through the body groove, the cooperation of heater strip and water intaking valve, make this balance flowmeter internal temperature can adjust, and then make this balance flowmeter can be less than 0 degree in winter, should be higher than normal work under the temperature of 45 degrees in summer, prevent this balance flowmeter from surpassing the temperature range work, it is inaccurate to cause balance flowmeter to calculate the flow numerical value in the pipeline.

Drawings

FIG. 1 is a schematic diagram of the connection relationship of the present invention;

FIG. 2 is a schematic view of the connection of the tube, the second long tube and the three valve assemblies in FIG. 1;

FIG. 3 is a schematic view showing the connection relationship between the tube body, the second long tube and the second long tube in FIG. 1;

FIG. 4 is a schematic view showing the connection relationship between the first long tube, the rubber pad and the vertical block in FIG. 1;

FIG. 5 is a schematic view showing the connection relationship between the through hole, the rubber ring and the groove in FIG. 1;

FIG. 6 is a schematic view showing the connection of the vertical block, the first bolt and the nut of FIG. 1;

fig. 7 is a schematic view showing a connection relationship between the rubber gasket, the first bolt and the nut in fig. 1.

In the figure: 1. the pipe body, 2, first long pipe, 3, second long pipe, 4, three valve groups, 5, rubber pad, 6, riser block, 7, choked flow mechanism, 701, circular plate, 702, first round hole, 703, second round hole, 8, adjusting mechanism, 801, water inlet valve, 802, outlet valve, 803, pipe body groove, 804, heating wire, 9, dust removal mechanism, 901, round pin axle, 902, transverse block, 903, transverse plate, 904, second bolt, 905, square plate, 906, filter plate, 10, first flange, 11, second flange, 12, through hole, 13, rubber ring, 14, groove, 15, rubber sleeve, 16, first bolt, 17, nut.

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.

Referring to fig. 1-7, the present invention provides a technical solution: the utility model provides a balance flow meter, including body 1, the top intercommunication of body 1 has first long tube 2, first long tube 2 is arranged in the low pressure air current of body 1 inside and then calculates in the external flow inductor, the top intercommunication of body 1 has second long tube 3, second long tube 3 is arranged in the high pressure air current of body 1 inside and then calculates in the external flow inductor, the top rigid coupling of first long tube 2 and second long tube 3 has three valves 4, three valves 4 are used for connecting the external flow inductor, the left side of three valves 4 is the high pressure valve, the right is the low pressure valve, the centre is the balance valve. The three valve groups are used in cooperation with a differential transmitter and are used for connecting or disconnecting a positive pressure measuring chamber and a negative pressure measuring chamber with a pressure guiding point or connecting or disconnecting the positive pressure measuring chamber and the negative pressure measuring chamber, an adjusting mechanism 8 is arranged inside a pipe body 1, a flow choking mechanism 7 is arranged on the inner wall of the pipe body 1, rubber pads 5 are fixedly connected on the left side end face and the right side end face of the pipe body 1, the rubber pads 5 are used for sealing after the pipe body 1 is connected with a first flange 10 and a second flange 11 to prevent gas from flowing out, two vertical blocks 6 are fixedly connected on the top and the bottom of the pipe body 1, the vertical blocks 6 are perpendicular to each other, a first flange 10 is attached to the right side of the pipe body 1, the first flange 10 is used for connecting with an external exhaust pipe to enable gas to flow into the external exhaust pipe from the inside of the pipe body 1, a first bolt 16 is connected with the top and the right side of the bottom through threads, the left outer wall of the first bolt 16 is connected with a nut 17 through a thread, so that the pipe body 1 and the first flange 10 are connected and fixed together through the thread between the first bolt 16 and the nut 17, the left side of the pipe body 1 is attached with a second flange 11, the top and the bottom right side of the second flange 11 are both connected with the first bolt 16 through a thread, the right outer wall of the first bolt 16 is connected with the top and the bottom left vertical block 6 of the pipe body 1 through a thread, the right outer wall of the first bolt 16 is connected with the nut 17 through a thread, so that the pipe body 1 and the second flange 11 are connected and fixed together through the thread between the first bolt 16 and the nut 17, the outer wall of the second flange 11 is processed with two through holes 12, the inner wall of the through hole 12 is fixedly connected with a rubber ring 13, the inner wall of the rubber ring 13 is provided with a dust removal mechanism 9, the inner wall of the second flange 11 is processed with two grooves 14, the inner wall of the groove, so that the dust removing mechanism 9 can enter the inside of the second flange 11 for dust removal, and the through holes 12 at the top and the bottom of the second flange 11 are not in the same straight line.

The flow blocking mechanism 7 comprises a circular plate 701, a first circular hole 702 and a second circular hole 703, the circular plate 701 is fixedly connected to the inner wall of the pipe body 1, the left end face of the circular plate 701 is provided with the first circular hole 702, the first circular hole 702 is used for blocking high-pressure airflow from rapidly passing through the inside of the pipe body 1, so that the high-pressure airflow enters the second long pipe 3 through the circular plate 701, and then enters the external flow sensor, so that the external flow sensor works, the left end face of the circular plate 701 is provided with the second circular hole 703, the second circular hole 703 is used for further blocking the high-pressure airflow from passing through the inside of the pipe body 1, the first circular hole 702 is located at the circle center of the circular plate 701, the second circular holes 703 are distributed at 60 degrees, so that the circular plate 701 is uniformly stressed when blocking the high.

The adjusting mechanism 8 comprises a water inlet valve 801, a water outlet valve 802, a pipe body groove 803 and a heating wire 804, the pipe body groove 803 is arranged inside the pipe body 1, the pipe body groove 803 is cylindrical, the left side of the bottom of the pipe body groove 803 is communicated with the water inlet valve 801, the water inlet valve 801 is used for being connected with an external refrigerating water circulating device, external ice water enters the pipe body groove 803, the pipe body groove 803 is used for cooling the pipe body 1, the balance flowmeter can work normally at high temperature in summer, the water outlet valve 802 is communicated with the right side of the bottom of the pipe body groove 803, which is used for being connected with the external refrigerating water circulating device, of the water inlet valve 801. So that the water with increased temperature flows out of the pipe body groove 803, the top of the pipe body groove 803 is fixedly connected with a plurality of heating wires 804, so that the balance flowmeter injects water through the water inlet valve 801 when the temperature is low in winter, the water is heated through the heating wires 804, the temperature of the water in the pipe body groove 803 is increased, and then the pipe body 1 is heated, and the balance flowmeter can work when the temperature is low in winter.

The dust removing mechanism 9 comprises a pin shaft 901, a cross block 902, a transverse plate 903, a second pin shaft 904, a square plate 905 and a filter plate 906, wherein the two cross blocks 902 are fixedly connected with the top and the bottom of the second flange 11, the outer side of the cross block 902 is rotatably connected with the square plate 905 through the pin shaft 901 so that the square plate 905 can rotate on the cross block 902, the outer side of the square plate 905 is in clearance fit with a second bolt 904, the outer wall of the second bolt 904 is in threaded connection with the outer wall of the second flange 11 so that the second bolt 904 limits the square plate 905, the square plate 905 is sleeved on the inner wall of the rubber ring 13, the outer wall of the square plate 905 is in interference fit with the inner wall of the rubber ring 13 so as to prevent the square plate 905 from entering the inside of the second flange 11 and then flowing out through the through hole 12, the outer wall of the square plate 905 is in interference fit with the inner wall of the rubber sleeve 15 so that the square plate 905 can be fixed inside the second flange 11, the filter 906 is used for filtering and removing dust in the high-pressure air current, prevents that dust from getting into the inside of body 1, and filter 906 is stainless steel material, and the sieve mesh size of filter 906 is 1.4-5mm, and the inboard of diaphragm 903 supports tightly each other with the outside of square plate 905 for the inside of second flange 11 can be fixed to diaphragm 903.

When the balance flowmeter is used, a user connects the top of the three-valve group 4 with an external flow sensor, the first flange 10 and the second flange 11 are connected with an external air inlet pipe and an exhaust pipe after the connection, the user opens an external air valve after the connection, so that high-pressure airflow flows into the inside of the second flange 11 through the external air inlet pipe, dust in the high-pressure airflow is removed through the filter plate 906, the high-pressure airflow flows out of the second flange 11 and enters the inside of the pipe body 1 after the dust is removed, the high-pressure airflow receives resistance when flowing through the circular plate 701, part of the high-pressure airflow flows into the second long pipe 2 and then enters the external flow sensor for partial calculation, the high-pressure airflow which does not flow into the second long pipe 2 flows through the circular plate 701 through the first circular hole 702 and the second circular hole 701, part of the air pressure 703 which flows into the inside of the first long pipe 2 and enters the external flow sensor, the gas flowing through the circular plate 701 flows into the external exhaust pipe from the inside of the first flange 10, and after flowing into the external exhaust pipe, the balance flow meter completes the work, when the balance flow meter works at a high temperature in summer, a user is connected with an external refrigeration water circulating device through the water inlet valve 801 and the water outlet valve 802, so that the balance flow meter is cooled, and further the balance flow meter works normally under the condition of a high temperature in summer, when the balance flow meter works at a low temperature in winter, the user guides water into the pipe body groove 803 through the water inlet valve 801, connects the heating wire 804 with an external power supply, so that the water is heated in the pipe body groove 803, the temperature of the balance flow meter is raised, and further the balance flow meter works under the condition of a low temperature in winter, when the balance flow meter is used for an excessively long time, the user rotates the second bolt 904, so that the, the transverse plate 903 is rotated outwards, after the transverse plate 903 is rotated outwards, a user pulls the square plate 905 out of the inner wall of the through hole 12, the square plate 905 is separated from the second flange 11, and after separation, the user cleans the filter plate 906 on the square plate 906 to prevent the filter plate 906 from being blocked due to overlong service time.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", 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, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.

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 invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A balanced flow meter, comprising a pipe body (1), characterized in that: the top of the pipe body (1) is communicated with a first long pipe (2), the top of the pipe body (1) is communicated with a second long pipe (3), three valve groups (4) are fixedly connected to the top of the first long pipe (2) and the top of the second long pipe (3), an adjusting mechanism (8) is arranged inside the pipe body (1), a flow blocking mechanism (7) is arranged on the inner wall of the pipe body (1), rubber pads (5) are fixedly connected to the end faces of the left side and the right side of the pipe body (1), two vertical blocks (6) are fixedly connected to the top and the bottom of the pipe body (1), a first flange (10) is attached to the right side of the pipe body (1), a first bolt (16) is connected to the top and the right side of the bottom through uniform threads, the outer wall of the left side of the first bolt (16) is connected to the vertical blocks (6) on the right side of the top of the pipe body (1) through threads, a nut (17) is connected to the outer wall, the left side of the pipe body (1) is attached with a second flange (11), the top and the bottom right side of the second flange (11) are connected with a first bolt (16) in a threaded manner, the right outer wall of the first bolt (16) is connected with the top and the bottom left vertical block (6) of the pipe body (1) in a threaded manner, the right outer wall of the first bolt (16) is connected with a nut (17) in a threaded manner, two through holes (12) are processed on the outer wall of the second flange (11), a rubber ring (13) is fixedly connected with the inner wall of each through hole (12), a dust removal mechanism (9) is arranged on the inner wall of each rubber ring (13), two grooves (14) are processed on the inner wall of the second flange (11), rubber sleeves (15) are fixedly connected on the inner wall of each groove (14), the through holes (12) correspond to the positions of the grooves (14), and the top and the through holes (12) at the bottom of the second flange (11) are not located on the same, the adjusting mechanism (8) comprises a water inlet valve (801), a water outlet valve (802), a pipe body groove (803) and heating wires (804), the pipe body groove (803) is arranged inside the pipe body (1), the left side of the bottom of the pipe body groove (803) is communicated with the water inlet valve (801), the right side of the bottom of the pipe body groove (803) is communicated with the water outlet valve (802), the top of the pipe body groove (803) is fixedly connected with a plurality of heating wires (804), the dedusting mechanism (9) comprises a pin shaft (901), a transverse block (902), a transverse plate (903), a second pin shaft (904), a square plate (905) and a filter plate (906), the two transverse blocks (902) are fixedly connected with the top and the bottom of the second flange (11), the outer side of the transverse block (902) is rotatably connected with the square plate (905) through the pin shaft (901), a second bolt (904) is in clearance fit with the outer side of the square plate (905), and the outer wall of the second bolt (904) is connected with the outer wall of the, the inner wall in rubber circle (13) is cup jointed in square plate (905), the outer wall of square plate (905) and the inner wall interference fit of rubber circle (13), the outer wall of square plate (905) and the inner wall interference fit of rubber sleeve (15), the inner wall rigid coupling of square plate (905) has filter (906), the inboard of diaphragm (903) supports tightly each other with the outside of square plate (905).

2. The balanced flow meter of claim 1, wherein: the flow resisting mechanism (7) comprises a circular plate (701), a first round hole (702) and a second round hole (703), wherein the circular plate (701) is fixedly connected to the inner wall of the pipe body (1), the left end face of the circular plate (701) is provided with the first round hole (702), and the left end face of the circular plate (701) is provided with the second round hole (703).

3. A balanced flow meter according to claim 2, characterized in that: the first round hole (702) is positioned at the center of the round plate (701).

4. A balanced flow meter according to claim 2, characterized in that: the second round holes (703) are distributed at 60 degrees between every two round holes.