CN111664901B

CN111664901B - Anti-blocking gas flowmeter

Info

Publication number: CN111664901B
Application number: CN202010670251.6A
Authority: CN
Inventors: 杨勇; 徐锋
Original assignee: Jiangsu Huahai M & C Technology Ltd
Current assignee: Jiangsu Huahai M & C Technology Ltd
Priority date: 2020-07-13
Filing date: 2020-07-13
Publication date: 2022-01-21
Anticipated expiration: 2040-07-13
Also published as: CN111664901A

Abstract

The invention provides an anti-blocking gas flowmeter, which comprises a flowmeter body, an extrusion water film anti-sticking mechanism and a pressure flowing water film wall mechanism, wherein the flowmeter body is used for measuring the flow of half water gas, the extrusion water film anti-sticking mechanism is used for timely cleaning impellers in the flowmeter, the pressure flowing water film wall mechanism is used for preventing dust from being accumulated on the wall of a cylinder, the flowmeter body structurally comprises an electromagnetic induction column, a converter, a measuring cylinder barrel and a plurality of measuring impellers, the electromagnetic induction column is inserted into the measuring cylinder barrel, and the anti-blocking gas flowmeter relates to the field of flowmeters. This prevent stifled coal gas flowmeter according to the condition of easy wearing and tearing and the frequent maintenance that the coal gas flowmeter exists, the special construction that can avoid wearing and tearing and dust deposit is designed out to the pertinence to effectual general coal gas flowmeter of having solved can be stained with some dusts on its impeller and the section of thick bamboo wall inside lining when passing through semi-water gas, influence flowmeter measurement accuracy easily, can cause the flowmeter to block up even, need often clear up, influence the problem of the normal use of flowmeter.

Description

Anti-blocking gas flowmeter

Technical Field

The invention relates to the technical field of flowmeters, in particular to an anti-blocking gas flowmeter.

Background

The gas flowmeter adopts a turbine to measure, firstly, the flow speed is converted into the rotation speed of the turbine, then the rotation speed is converted into an electric signal which is in direct proportion to the flow, the flowmeter is used for detecting instantaneous flow and total accumulated flow, the output signal is frequency and easy to digitize, semi-water gas contains a large amount of dust and water vapor, the water vapor and the dust are easy to deposit on a lining of a cylinder wall of the flowmeter and a rotating impeller in the circulation process, the attached dust can increase the coincidence of the impeller and further influence the rotating driving force of the impeller, so that the measuring precision is greatly influenced, the dust friction force attached to the lining of the cylinder wall is large, the resistance on the outer side of fluid is large, the normal flow of the semi-water gas is influenced, even the blockage of the flowmeter can be possibly caused, the detecting precision of the flowmeter is also greatly influenced, and therefore, the gas flowmeter needs to be frequently disassembled and cleaned, very troublesome, when general gas flowmeter is through semi-water gas, can be stained with some dusts on its impeller and the section of thick bamboo wall inside lining, influence the flowmeter measurement accuracy easily, can cause the flowmeter to block up even, need often clear up, influence the normal use of flowmeter, all need prevent stifled gas flowmeter.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides an anti-blocking gas flowmeter, which solves the problems that when a common gas flowmeter passes through semi-water gas, the impeller and the inner lining of the cylinder wall of the gas flowmeter are adhered with dust, the measuring precision of the flowmeter is easily influenced, even the flowmeter is blocked, the flowmeter needs to be cleaned frequently, and the normal use of the flowmeter is influenced.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides an anti-blocking gas flowmeter, includes the flowmeter body that is used for carrying out flow measurement to half water gas, is used for carrying out the extrusion water film antiseized mechanism of in time clearing up and the pressure that is used for avoiding the section of thick bamboo wall to deposit the dust flows the water film wall mechanism, the structure of flowmeter body includes electromagnetic induction post, converter, measurement bobbin and a plurality of measurement impeller, the electromagnetic induction post inserts the inside of measuring the bobbin, the top fixed mounting of electromagnetic induction post has the converter, measure impeller and electromagnetic induction post looks adaptation, extrusion water film antiseized mechanism sets up in the inside of measuring the bobbin, pressure flows water film wall mechanism and sets up in the inside of measuring the bobbin, a plurality of it all sets up on the inside extrusion water film antiseized mechanism of measuring the bobbin to measure the impeller.

Preferably, the extrusion water film anti-sticking mechanism comprises a pressure water inlet pipe, a vertical supporting pipe, a communicating supporting pipe, a head sealing pipe and an impeller supporting ring, wherein two ends of the vertical supporting pipe are fixedly connected with the inner wall of the measuring pipe barrel, one end of the pressure water conveying pipe penetrates through the measuring pipe barrel and extends to the inside of the vertical supporting pipe, the surface of the vertical supporting pipe is fixedly connected with the communicating supporting pipe, one end of the communicating supporting pipe is communicated with the vertical supporting pipe, the communicating supporting pipe is coaxial with the measuring pipe barrel, the inner wall of the communicating supporting pipe is fixedly connected with a hollowed-out connecting block, the surface of the hollowed-out connecting block is fixedly connected with a coaxial rod, the other end of the coaxial rod is fixedly connected with the inner wall of the head sealing pipe, one end of the head sealing pipe is in a closed ring shape, and the head sealing pipe is communicated with the communicating supporting pipe.

Preferably, the surface of the communicating supporting tube and the outer surface of the head sealing tube are both provided with annular chutes, the inner wall of the impeller supporting ring is embedded with two circles of steel balls, the two circles of steel balls respectively correspond to the annular chutes on the outer surface of the communicating supporting tube and the outer surface of the head sealing tube, the surfaces of the steel balls are in sliding connection with the inner wall of the annular chutes, and the measuring impeller is fixedly connected to the impeller supporting ring.

Preferably, a water collecting groove is formed among the communication supporting tube, the head sealing tube and the impeller supporting ring, a plurality of water outlet grooves which are in one-to-one correspondence with the measuring impellers are formed in the impeller supporting ring, one end of each water outlet groove is attached to the bottom of the measuring impeller, a water pressing block is fixedly connected to the inner wall of each water outlet groove, the surface of each water pressing block is inclined, and a water hooking groove is formed in the surface of each water pressing block.

Preferably, the pressure flowing water film wall mechanism comprises a cylinder wall lining, a shaping water passing ring and a ripple film forming pad, the surface of the cylinder wall lining is fixedly connected with the inner wall of the measuring cylinder, the surface of the ripple film forming pad is fixedly connected with the inner wall of the cylinder wall lining, a water pressure cavity is arranged between the inner wall of the cylinder wall lining and the surface of the ripple film forming pad, the shaping water passing ring is arranged inside the water pressure cavity, and the surface of the ripple film forming pad is fixedly connected with the inner side face of the shaping barrel water ring.

Preferably, a plurality of supporting blocks are fixedly connected to the inner wall of the cylinder wall lining, the surface of each supporting block is fixedly connected with the surface of the shaping water passing ring, a plurality of arc-shaped plastic grooves are formed in the surface of the shaping water passing ring, the opening width of the cross section of each arc-shaped plastic groove is smaller than the diameter of the cross section of each arc-shaped plastic groove, a plurality of water outlets corresponding to the arc-shaped plastic grooves one to one are formed in the surface of the shaping water passing ring, the surface of the corrugated film forming pad is corrugated, a plurality of rows of water collecting holes are formed in the corrugation of the corrugated film forming pad, and a communicated water conveying port communicated with the water pressing cavity is formed in the surface of the vertical supporting tube.

Preferably, the water inlet end of the measuring pipe barrel is in threaded connection with a water inlet flange, and the water outlet end of the measuring pipe barrel is in threaded connection with a water outlet flange.

(III) advantageous effects

(1) According to the invention, the extrusion water film anti-sticking mechanism is arranged, when the semi-water gas pushes the measuring impeller to rotate, the circumferential motion of the measuring impeller in the rotating process enables water flow to be continuously extruded and gathered on the windward side of the measuring impeller through the water hooking groove on the water pressing block, the semi-water gas impacts the water body to enable the water body to be diffused to the measuring impeller, the water body can be spread to form a continuous water film to play a continuous protection role on the measuring impeller, the surface of the measuring impeller can be washed, and dust deposition is avoided.

(2) According to the invention, by arranging the pressure flowing water film wall mechanism, when the semi-water gas flows through the flowmeter, the pressure in the pipe barrel is measured, so that the corrugated film forming pad is completely extruded and sunken into the arc-shaped shaping groove, and under the action of water pressure, the arc-shaped shaping groove and the water collecting holes, a layer of circular tubular flowing water film is gathered and attached to the corrugated film forming pad, so that dust deposition can be avoided, and meanwhile, the effect of protecting the pipe wall can be achieved.

(3) According to the invention, a special structure capable of avoiding abrasion and dust deposition is designed in a targeted manner according to the conditions of easy abrasion and frequent maintenance of the gas flowmeter, so that the problems that the measurement accuracy of the flowmeter is easily influenced, the flowmeter is even blocked, frequent cleaning is needed and the normal use of the flowmeter is influenced due to the fact that some dust is adhered to the impeller and the lining of the cylinder wall of the general gas flowmeter when semi-water gas passes through the general gas flowmeter are effectively solved.

Drawings

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

FIG. 2 is a cross-sectional view of a measuring tube configuration of the present invention;

FIG. 3 is an enlarged view of the structure of FIG. 2;

FIG. 4 is a cross-sectional view of a communicating support tube structure according to the present invention;

FIG. 5 is a cross-sectional view of an impeller support ring structure in accordance with the present invention;

FIG. 6 is an expanded plan view of the corrugated film mat of the present invention.

The device comprises a flowmeter body 1, an electromagnetic induction column 11, a converter 12, a measuring pipe barrel 13, a measuring impeller 14, an extrusion water film anti-sticking mechanism 2, a pressure water inlet pipe 21, a vertical supporting pipe 22, a communication supporting pipe 23, a sealing head pipe 24, an impeller supporting ring 25, a hollow connecting block 26, a coaxial rod 27, an annular sliding groove 28, a steel ball 29, a water collecting groove 210, a water outlet groove 211, a water pressing block 212, a water hooking groove 213, a pressure flowing water film wall mechanism 3, a cylinder wall lining 31, a plastic water passing ring 32, a corrugated film forming pad 33, a water pressing cavity 34, a supporting block 35, an arc-shaped plastic groove 36, a water outlet 37, a water collecting hole 38, a water delivery port 39, a water inlet flange 4 and a water outlet flange 5.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings 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.

As shown in fig. 1-6, the embodiment of the present invention provides an anti-blocking gas flowmeter, which comprises a flowmeter body 1 for measuring the flow of half-water gas, an extrusion water film anti-sticking mechanism 2 for cleaning the impeller inside the flowmeter in time, and a pressure flow water film wall mechanism 3 for preventing dust from being deposited on the wall of a cylinder, wherein the flowmeter body 1 structurally comprises an electromagnetic induction column 11, converter 12, measure bobbin 13 and a plurality of and measure impeller 14, electromagnetic induction post 11 inserts the inside of measuring bobbin 13, the top fixed mounting of electromagnetic induction post 11 has converter 12, measure impeller 14 and electromagnetic induction post 11 looks adaptation, extrusion water film anti-sticking mechanism 2 sets up the inside at measuring bobbin 13, pressure flow water film wall mechanism 3 sets up the inside at measuring bobbin 13, a plurality of measures impeller 14 and all sets up on the inside extrusion water film anti-sticking mechanism 2 of measuring bobbin 13.

The extrusion water film anti-sticking mechanism 2 comprises a pressure water inlet pipe 21, a vertical supporting pipe 22, a communicating supporting pipe 23, a head sealing pipe 24 and an impeller supporting ring 25, wherein two ends of the vertical supporting pipe 22 are fixedly connected with the inner wall of the measuring pipe barrel 13, one end of the pressure water conveying pipe penetrates through the measuring pipe barrel 13 and extends into the vertical supporting pipe 22, the surface of the vertical supporting pipe 22 is fixedly connected with the communicating supporting pipe 23, one end of the communicating supporting pipe 23 is communicated with the vertical supporting pipe 22, the communicating supporting pipe 23 is coaxial with the measuring pipe barrel 13, the inner wall of the communicating supporting pipe 23 is fixedly connected with a hollowed-out connecting block 26, the surface of the hollowed-out connecting block 26 is fixedly connected with a coaxial rod 27, the other end of the coaxial rod 27 is fixedly connected with the inner wall of the head sealing pipe 24, one end of the head sealing pipe 24 is in a closed ring shape, the head sealing pipe 24 is communicated with the communicating supporting pipe 23, and annular sliding grooves 28 are formed in the surface of the communicating supporting pipe 23 and the outer surface of the head sealing pipe 24, two circles of steel balls 29 are embedded in the inner wall of the impeller supporting ring 25, the two circles of steel balls 29 correspond to the annular sliding grooves 28 on the outer surface of the communicating supporting tube 23 and the outer surface of the head sealing tube 24 respectively, the surface of the steel balls 29 is in sliding connection with the inner wall of the annular sliding grooves 28, the measuring impeller 14 is fixedly connected to the impeller supporting ring 25, a water collecting groove 210 is arranged between the communicating supporting tube 23, the head sealing tube 24 and the impeller supporting ring 25, a plurality of water outlet grooves 211 which are in one-to-one correspondence with the measuring impellers 14 are formed in the impeller supporting ring 25, one end of each water outlet groove 211 is attached to the bottom of the measuring impeller 14, a water pressing block 212 is fixedly connected to the inner wall of each water outlet groove 211, the surface of each water pressing block 212 is inclined, and a water hooking groove 213 is formed in the surface of each water pressing block 212.

The pressure flowing water film wall mechanism 3 comprises a cylinder wall lining 31, a shaping water passing ring 32 and a ripple film forming pad 33, the surface of the cylinder wall lining 31 is fixedly connected with the inner wall of the measuring cylinder 13, the surface of the ripple film forming pad 33 is fixedly connected with the inner wall of the cylinder wall lining 31, a water pressure cavity 34 is arranged between the inner wall of the cylinder wall lining 31 and the surface of the ripple film forming pad 33, the shaping water passing ring 32 is arranged in the water pressure cavity 34, the surface of the ripple film forming pad 33 is fixedly connected with the inner side surface of the shaping water barrel ring, the inner wall of the cylinder wall lining 31 is fixedly connected with a plurality of supporting blocks 35, the surface of the supporting blocks 35 is fixedly connected with the surface of the shaping water passing ring 32, a plurality of arc-shaped grooves 36 are arranged on the surface of the shaping water passing ring 32, the opening width of the cross sections of the arc-shaped grooves 36 is smaller than the diameter of the cross sections of the arc-shaped grooves 36, a plurality of water outlets 37 which are in one-to-one correspondence with the arc-shaped grooves 36 are arranged on the surface of the shaping water passing ring 32, the surface of the corrugated film forming cushion 33 is in a corrugated shape, a plurality of rows of water gathering holes 38 are formed inside the corrugations of the corrugated film forming cushion 33, a communicating water conveying port 39 communicated with the water pressing cavity 34 is formed in the surface of the vertical supporting pipe 22, a water inlet flange 4 is connected to the water inlet end of the measuring pipe barrel 13 in a threaded mode, and a water outlet flange 5 is connected to the water outlet end of the measuring pipe barrel 13 in a threaded mode.

When the device is used, a power supply is connected, semi-water gas enters the inside of the flowmeter through an inlet, meanwhile, water continuously enters the pressure water inlet pipe 21, the semi-water gas impacts the measuring impeller 14 to push the measuring impeller 14 to rotate, flow detection is carried out under the cooperation of the electromagnetic induction column 11, the rotating measuring impeller 14 drives the impeller support ring 25 to rotate, the impeller support ring 25 drives each water pressing block 212 to rotate, the water pressing block 212 extrudes clean water to be sprayed to the windward side of the measuring impeller 14 through the water outlet groove 211, the semi-water gas impacts the clean water and impacts the measuring impeller 14, the clean water timely cleans the surface of the measuring impeller 14 and takes away dust, the pressure of the semi-water gas inside the flowmeter body 1 extrudes the corrugated film forming pad 33, the corrugations of the corrugated film forming pad 33 expand and dent into the inside of each arc-shaped plastic groove 36, and the corrugated film forming pad 33 is not attached to the inner wall of the arc-shaped plastic groove 36, at this time, each water collecting hole 38 is exposed, clean water in the pressurized water cavity 34 enters the arc-shaped shaping groove 36 through each water outlet 37 and flows along the flowing direction of the semi-water gas at the concave position of the water collecting hole 33 along the inclined water collecting hole 38, a flowing water film is formed on the corrugated film forming pad 33 at this time, and the flow of the passing clean water is subtracted after the measurement is finished.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Claims

1. The utility model provides an prevent stifled coal gas flowmeter, includes flowmeter body (1) that is used for carrying out flow measurement to half water gas, is used for carrying out the antiseized mechanism of extrusion water film (2) of timely clearance and pressure flow water film wall mechanism (3) that are used for avoiding the section of thick bamboo wall to deposit the dust, its characterized in that to the inside impeller of flowmeter: the flowmeter body (1) structurally comprises an electromagnetic induction column (11), a converter (12), a measuring tube barrel (13) and a plurality of measuring impellers (14), wherein the electromagnetic induction column (11) is inserted into the measuring tube barrel (13), the converter (12) is fixedly installed at the top end of the electromagnetic induction column (11), the measuring impellers (14) are matched with the electromagnetic induction column (11), the extrusion water film anti-sticking mechanism (2) is arranged inside the measuring tube barrel (13), the pressure flowing water film wall mechanism (3) is arranged inside the measuring tube barrel (13), and the plurality of measuring impellers (14) are all arranged on the extrusion water film anti-sticking mechanism (2) inside the measuring tube barrel (13);

the extrusion water film anti-sticking mechanism (2) comprises a pressure water inlet pipe (21), a vertical supporting pipe (22), a communicating supporting pipe (23), a head sealing pipe (24) and an impeller supporting ring (25), wherein two ends of the vertical supporting pipe (22) are fixedly connected with the inner wall of a measuring pipe barrel (13), one end of a pressure water conveying pipe penetrates through the measuring pipe barrel (13) and extends to the inside of the vertical supporting pipe (22), the surface of the vertical supporting pipe (22) is fixedly connected with the communicating supporting pipe (23), one end of the communicating supporting pipe (23) is communicated with the vertical supporting pipe (22), the communicating supporting pipe (23) is coaxial with the measuring pipe barrel (13), the inner wall of the communicating supporting pipe (23) is fixedly connected with a hollowed-out connecting block (26), the surface of the hollowed-out connecting block (26) is fixedly connected with a same shaft rod (27), and the other end of the same shaft rod (27) is fixedly connected with the inner wall of the head sealing pipe (24), one end of the head sealing pipe (24) is in a closed ring shape, the head sealing pipe (24) is communicated with the communicating supporting pipe (23), the surface of the communicating supporting pipe (23) and the outer surface of the head sealing pipe (24) are respectively provided with an annular sliding groove (28), the inner wall of the impeller supporting ring (25) is embedded with two circles of steel balls (29), the two circles of steel balls (29) are respectively corresponding to the annular sliding grooves (28) on the outer surface of the communicating supporting pipe (23) and the outer surface of the head sealing pipe (24), the surface of the steel balls (29) is in sliding connection with the inner wall of the annular sliding groove (28), the measuring impeller (14) is fixedly connected to the impeller supporting ring (25), a water collecting groove (210) is arranged between the communicating supporting pipe (23), the head sealing pipe (24) and the impeller supporting ring (25), the impeller supporting ring (25) is provided with a plurality of water outlet grooves (211) which are in one-to-one correspondence with the measuring impeller (14), one end of the water outlet groove (211) is attached to the bottom of the measuring impeller (14), a water pressing block (212) is fixedly connected to the inner wall of the water outlet groove (211), the surface of the water pressing block (212) is inclined, and a water hooking groove (213) is formed in the surface of the water pressing block (212).

2. The anti-clogging gas flow meter according to claim 1, characterized in that: pressure flows water membrane wall mechanism (3) and becomes membrane pad (33) including section of thick bamboo wall inside lining (31), moulding logical water ring (32) and ripple, the surface of section of thick bamboo wall inside lining (31) and the inner wall fixed connection who measures bobbin (13), the ripple becomes the surface of membrane pad (33) and the inner wall fixed connection of section of thick bamboo wall inside lining (31), the inner wall of section of thick bamboo wall inside lining (31) and ripple become to be provided with between the surface of membrane pad (33) and press water chamber (34), moulding logical water ring (32) set up in the inside of pressing water chamber (34), the ripple becomes the surface of membrane pad (33) and the medial surface fixed connection of moulding bucket water ring.

3. The anti-clogging gas flow meter according to claim 2, characterized in that: the inner wall fixedly connected with a plurality of supporting shoe (35) of section of thick bamboo wall inside lining (31), the fixed surface of the surface of supporting shoe (35) and moulding ring (32) that leads to water is connected, a plurality of arc plastic groove (36) have been seted up on the surface of moulding ring (32) that leads to water, the opening width in arc plastic groove (36) cross-section is less than the diameter in arc plastic groove (36) cross-section, delivery port (37) of a plurality of and arc plastic groove (36) one-to-one are seted up on the surface of moulding ring (32) that leads to water, the surface that the ripple becomes membrane pad (33) is the ripple shape, a plurality of rows of gathering hole (38) have been seted up to the ripple inside of ripple that becomes membrane pad (33), intercommunication water delivery port (39) that are linked together with pressure water cavity (34) are seted up to the surface of vertical stay tube (22).

4. The anti-clogging gas flow meter of claim 3, wherein: the water inlet end of the measuring pipe barrel (13) is in threaded connection with a water inlet flange (4), and the water outlet end of the measuring pipe barrel (13) is in threaded connection with a water outlet flange (5).