CN110954176B

CN110954176B - Gas flowmeter

Info

Publication number: CN110954176B
Application number: CN201911331799.1A
Authority: CN
Inventors: 赵文; 李亚利; 任磊
Original assignee: Schindler Instrument Cangzhou Co ltd
Current assignee: Schindler instrument (Cangzhou) Co.,Ltd.
Priority date: 2019-12-21
Filing date: 2019-12-21
Publication date: 2021-10-29
Anticipated expiration: 2039-12-21
Also published as: CN110954176A

Abstract

The invention relates to the field of flowmeters, in particular to a gas flowmeter which comprises a guide impeller mechanism, a sealing installation mechanism, a counting mechanism and a protection mechanism, wherein the sealing installation mechanism is arranged at two ends of the guide impeller mechanism. Through pressing the protective cover down, can drive spacing slider vertical the sliding down in the inside of spacing spout, spacing slider can drive when sliding and press the post and trigger press switch, press switch receives and to start the inside LED lamp pearl of recess when pressing and throw light on, be convenient for read the reading of count table under the relatively poor condition of visibility, on the other hand, can consolidate the watchcase of count table through inside protective cover and the shell of the protection machanism that sets up, can effectually prevent that the count table is impaired, make the life of flowmeter improve, and through the transparent glass board of the inside scarf joint of viewing aperture, can effectually prevent that the dust in the air from attaching to the surface of count table, be convenient for look over the data of count table.

Description

Gas flowmeter

Technical Field

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

Background

Metering is on the eye of industrial production. The flow measurement is one of the components of the measurement science and technology, and has close relation with national economy, national defense construction and scientific research. The work is well done, the flowmeter has important effects on ensuring the product quality, improving the production efficiency and promoting the development of scientific technology, and particularly has more obvious status and effect in national economy in the current times that the energy crisis and the industrial production automation degree are higher and higher.

Gas flowmeter is when carrying the measurement to the natural gas, install outdoor mostly, at night, when the visibility is lower and natural gas line takes place to leak or when the reading of urgent need to gas flowmeter reads, current gas flowmeter does not set up lighting mechanism, when reading data, need just can read the reading for its illumination, make very inconvenient when reading to flowmeter data, on the other hand, current gas flowmeter is when using, because not set up protection machanism, make the easy damage of impaired external force of gas flowmeter, make gas flowmeter's life shorten greatly.

Disclosure of Invention

To address the problems in the prior art, the present invention provides a gas flow meter.

The technical scheme adopted by the invention for solving the technical problems is as follows: a gas flowmeter comprises a guide impeller mechanism, a sealing installation mechanism, a counting mechanism and a protection mechanism, wherein the sealing installation mechanism is arranged at two ends of the guide impeller mechanism, the counting mechanism is arranged above the guide impeller mechanism, the protection mechanism is arranged above the counting mechanism, the guide impeller mechanism consists of a pipe fitting, a through hole, a transmission shaft, a shaft sleeve, an impeller, a flow limiting block, a sealing ring, an upper flow guide block, a lower flow guide block and a flow guide hole, the pipe wall at the top of the pipe fitting is provided with the through hole, the through hole is communicated with the inside of the pipe fitting, the transmission shaft is arranged inside the pipe fitting and is positioned under the through hole, the shaft sleeve is fixedly connected onto the shaft wall of the transmission shaft, the side wall at the excircle side of the shaft sleeve is fixedly connected with a plurality of impellers, the intervals among the impellers are the same, and the flow limiting blocks are arranged among the impellers, the flow limiting block is fixedly connected to the outer wall of the shaft sleeve, sealing rings are arranged on two sides of the transmission shaft and fixedly connected with the inner wall of the pipe fitting, an upper flow guide block and a lower flow guide block are arranged inside the sealing rings and fixedly connected with the inner top wall and the inner bottom wall of the sealing rings respectively, and flow guide holes are formed in the joints of the upper flow guide block and the lower flow guide block.

Specifically, sealed installation mechanism comprises first flange, second flange and screw, first flange fixed connection is on the outer pipe wall of pipe fitting one end, second flange fixed connection is on the outer pipe wall of pipe fitting one end of keeping away from first flange one end, a plurality of screw has all been seted up on first flange and the second flange, just a plurality of screw equidistant setting on first flange and the second flange.

Specifically, counting mechanism comprises count table, amplifier and lock nut, amplifier fixed mounting is in the bottom of count table, the through-hole is passed to the one end of amplifier, just the amplifier passes the one end and the transmission shaft fixed connection that the through-hole extends to the pipe fitting inside, threaded connection has lock nut on the lateral wall that the amplifier is located the pipe fitting top.

Specifically, the protection mechanism comprises a shell, a protection cover, a cover plate, an observation port, a groove, LED lamp beads, a limiting slide block, a limiting slide groove, a pressing column, an elastic spring and a pressing switch, wherein the shell is sleeved on a shell of the counting meter, the protection cover is sleeved on the outer wall of the shell, the cover plate is fixedly connected on the inner wall of the top of the protection cover, the observation port is formed in the top of the cover plate, a transparent glass plate is embedded and connected in the observation port, the bottom of the cover plate is provided with the groove around the observation port, a plurality of LED lamp beads are arranged in the groove at equal intervals, the limiting slide blocks are fixedly connected on the inner side walls on two sides of the protection cover, the limiting slide grooves are formed in the outer walls on two sides of the shell and correspond to the limiting slide blocks, the limiting slide grooves are matched with the limiting slide blocks, and the limiting slide blocks are connected in the limiting slide grooves, the bottom fixedly connected with of spacing slider presses the post, it has elastic spring to cup joint on the post wall of pressing the post, elastic spring's one end and spacing slider fixed connection, elastic spring's other end fixedly connected with press the switch, press switch fixed connection at the interior bottom of spacing spout.

Specifically, one end of the transmission shaft, which is far away from the amplifier, is fixedly connected with a limiting shaft, the outer shaft wall of the limiting shaft is fixedly connected with a bearing, and the bearing is embedded on the pipe wall at the bottom in the pipe fitting.

The pipe fitting comprises a pipe fitting body, a pipe fitting body and a sealing gasket, wherein the pipe fitting body is provided with a first connecting flange and a second connecting flange, the first connecting flange is connected with the pipe fitting body through a rubber material, the second connecting flange is connected with the pipe fitting body through a rubber material, and the sealing gasket is sleeved on the pipe wall of the pipe fitting body and made of the rubber material.

The invention has the beneficial effects that:

(1) according to the gas flowmeter, the protective cover is pressed downwards to drive the limiting sliding block to vertically slide downwards in the limiting sliding groove, the limiting sliding block can drive the pressing column to trigger the pressing switch when sliding, the LED lamp beads in the groove can be started to illuminate when the pressing switch is pressed, reading of a counting meter can be conveniently conducted under the condition of poor visibility, on the other hand, the protective cover and the shell in the protective mechanism can be used for reinforcing and protecting the shell of the counting meter, the counting meter can be effectively prevented from being damaged, the service life of the flowmeter is prolonged, and dust in air can be effectively prevented from attaching to the surface of the counting meter through the transparent glass plate embedded in the observation port, and data of the counting meter can be conveniently checked.

(2) According to the gas flowmeter, the gas flowing through the pipe fitting can accurately flap the surface of the impeller through the flow guide block arranged in the pipe fitting to drive the impeller to rotate, so that the gas flow is more accurately counted by the flowmeter, and the pipe fitting can be better sealed when being installed and connected with a natural gas conveying pipeline through the sealing installation mechanisms arranged at the two ends of the pipe fitting.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural diagram of a gas flowmeter provided by the present invention;

FIG. 2 is a side view of a tubular member of a gas flow meter according to the present invention;

FIG. 3 is a schematic diagram of an internal structure of a pipe in a gas flowmeter according to the present invention;

FIG. 4 is a schematic structural diagram of an impeller in a gas flowmeter according to the present invention;

fig. 5 is a schematic structural diagram of a protection mechanism in a gas flowmeter provided by the invention.

In the figure: 1. a guide impeller mechanism; 11. a pipe fitting; 12. a through hole; 13. a drive shaft; 14. a limiting shaft; 15. a bearing; 16. a shaft sleeve; 17. an impeller; 18. a flow limiting block; 19. a seal ring; 110. an upper flow guide block; 111. a lower flow guide block; 112. a flow guide hole; 113. embedding grooves; 2. a seal installation mechanism; 21. a first connecting flange; 22. a second connecting flange; 23. a screw hole; 24. a rubber seal ring; 25. a sealing gasket; 3. a counting mechanism; 31. a counting table; 32. an amplifier; 33. locking the nut; 4. a protection mechanism; 41. a housing; 42. a protective cover; 43. a cover plate; 44. a viewing port; 45. a groove; 46. LED lamp beads; 47. a limiting slide block; 48. a limiting chute; 49. pressing the column; 410. an elastic spring; 411. the switch is pressed.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1-5, the gas flowmeter according to the present invention includes a guide impeller mechanism 1, a seal mounting mechanism 2, a counting mechanism 3 and a protection mechanism 4, wherein the seal mounting mechanism 2 is disposed at two ends of the guide impeller mechanism 1, the counting mechanism 3 is disposed above the guide impeller mechanism 1, the protection mechanism 4 is disposed above the counting mechanism 3, the guide impeller mechanism 1 is composed of a pipe 11, a through hole 12, a transmission shaft 13, a shaft sleeve 16, an impeller 17, a flow limiting block 18, a sealing ring 19, an upper flow guiding block 110, a lower flow guiding block 111 and a flow guiding hole 112, the pipe wall at the top of the pipe 11 is provided with a through hole 12, the through hole 12 is communicated with the inside of the pipe 11, the transmission shaft 13 is disposed inside the pipe 11, the transmission shaft 13 is located right below the through hole 12, and the shaft sleeve 16 is fixedly connected to the shaft wall of the transmission shaft 13, the side wall of the excircle side of the shaft sleeve 16 is fixedly connected with a plurality of impellers 17, the intervals between the plurality of impellers 17 are the same, a plurality of flow limiting blocks 18 are arranged between the plurality of impellers 17, the flow limiting blocks 18 are fixedly connected to the outer wall of the shaft sleeve 16, both sides of the transmission shaft 13 are provided with sealing rings 19, the sealing rings 19 are fixedly connected with the inner pipe wall of the pipe fitting 11, an upper flow guide block 110 and a lower flow guide block 111 are arranged inside the sealing rings 19, the upper flow guide block 110 and the lower flow guide block 111 are fixedly connected with the inner top wall and the inner bottom wall of the sealing rings 19 respectively, and flow guide holes 112 are formed in the joints of the upper flow guide block 110 and the lower flow guide block 111.

Specifically, sealed installation mechanism 2 comprises first flange 21, second flange 22 and screw 23, first flange 21 fixed connection is on the outer pipe wall of 11 one ends of pipe fittings, second flange 22 fixed connection is on the outer pipe wall of 11 one ends of keeping away from first flange 21 of pipe fittings 11, a plurality of screw 23 has all been seted up on first flange 21 and the second flange 22, just a plurality of screw 23 equidistant setting on first flange 21 and the second flange 22.

Specifically, counting mechanism 3 comprises count table 31, amplifier 32 and lock nut 33, amplifier 32 fixed mounting is in the bottom of count table 31, through-hole 12 is passed to amplifier 32's one end, just amplifier 32 passes through-hole 12 and extends to the inside one end of pipe fitting 11 and transmission shaft 13 fixed connection, threaded connection has lock nut 33 on amplifier 32 is located the lateral wall of pipe fitting 11 top.

Specifically, the protection mechanism 4 is composed of a housing 41, a protection cover 42, a cover plate 43, an observation port 44, a groove 45, LED lamp beads 46, a limit slider 47, a limit sliding groove 48, a pressing column 49, an elastic spring 410 and a press switch 411, the housing 41 is sleeved on the housing of the counting meter 31, the protection cover 42 is sleeved on the outer wall of the housing 41, the cover plate 43 is fixedly connected on the inner wall of the top of the protection cover 42, the observation port 44 is arranged at the top of the cover plate 43, a transparent glass plate is embedded and connected in the observation port 44, the groove 45 is arranged at the bottom of the cover plate 43 around the observation port 44, the LED lamp beads 46 are arranged in the groove 45 at equal intervals, the limit slider 47 is fixedly connected on the inner side walls at two sides of the protection cover 42, the limit sliding groove 48 is arranged on the outer walls at two sides of the housing 41 corresponding to the limit slider 47, spacing spout 48 and spacing slider 47 phase-match set up, just spacing slider 47 sliding connection is in the inside of spacing spout 48, the bottom fixedly connected with of spacing slider 47 presses post 49, it has cup jointed elastic spring 410 on the post wall of post 49 to press, elastic spring 410's one end and spacing slider 47 fixed connection, elastic spring 410's other end fixedly connected with press switch 411, press switch 411 fixed connection is in the interior bottom of spacing spout 48.

Specifically, the spacing axle 14 of one end fixedly connected with of amplifier 32 that keeps away from of transmission shaft 13, fixedly connected with bearing 15 on the outer axle wall of spacing axle 14, bearing 15 scarf joint is on the pipe wall of bottom in pipe fitting 11, and transmission shaft 13 can drive spacing axle 14 when rotating and rotate, and bearing 15 and pipe fitting 11 fixed connection can make transmission shaft 13 rotate more stably.

Specifically, scarf joint groove 113 has all been seted up on the lateral wall at pipe fitting 11 both ends, two scarf joint groove 113's inside is inlayed and is connected with rubber seal 24, and rubber seal 24 of rubber material can make the leakproofness of pipe fitting 11's both ends when being connected with the pipeline better, equal fixedly connected with seal ring 25 on first flange 21 and second flange 22's the lateral wall, seal ring 25 cup joints on the pipe wall of pipe fitting 11, just seal ring 25 is made by rubber materials, and rubber material's seal ring 25 can make the leakproofness of first flange 21 and second flange 22 when installing better for sealed effect between pipe fitting 11 and the pipeline further improves.

The connecting flanges at the two ends of the pipe fitting 11 are connected with a natural gas pipeline, when the connecting flanges are connected, the rubber sealing rings 24 and the sealing gaskets 25 made of rubber materials are embedded in the embedding grooves 113, so that the sealing performance of the first connecting flange 21 and the second connecting flange 22 is better when the connecting flanges are installed, the sealing performance of the two ends of the pipe fitting 11 when the connecting flanges are connected with the pipeline is improved, when the connecting flanges are used, natural gas flows through the flow guide holes 112 on the upper flow guide block 110 and the lower flow guide block 111, the flowing gas accurately beats on the surface of the impeller 17 to drive the impeller 17 to rotate, the impeller 17 can drive the transmission shaft 13 to rotate when the impeller 17 rotates, the transmission shaft 13 passes through the amplifier 32 when the transmission shaft 13 rotates, the counting meter 31 counts the number of rotating circles of the transmission shaft 13, the transmission shaft 13 can drive the limiting shaft 14 to rotate when the transmission shaft 13 rotates, and the bearing 15 is fixedly connected with the pipe fitting 11, the transmission shaft 13 can be rotated more stably, the counting of the gas flow by the flowmeter is more accurate, when data are read, the protective cover 42 is pressed downwards, the limiting slide block 47 can be driven to vertically slide downwards in the limiting slide groove 48, the limiting slide block 47 can drive the pressing column 49 to trigger the pressing switch 411 when sliding, the LED lamp beads 46 in the groove 45 can be started to illuminate when the pressing switch 411 is pressed, the reading of the counting meter 31 is convenient to read under the condition of poor visibility, the watchcase of the counting meter 31 can be reinforced and protected through the protective cover 42 and the shell 41 in the arranged protective mechanism 4, the counting meter 31 can be effectively prevented from being damaged, the service life of the flowmeter is prolonged, through the transparent glass plate embedded in the observation port 44, the dust in the air can be effectively prevented from being attached to the surface of the counting meter 31, it is convenient to view the data of the count table 31.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A method of measuring gas flow, comprising the steps of:

s1, the connecting flanges at the two ends of the pipe fitting (11) are connected with the natural gas pipeline, and when the connecting flanges are connected, the rubber sealing rings (24) and the rubber sealing gaskets (25) which are embedded in the embedding grooves (113) can enable the first connecting flange (21) and the second connecting flange (22) to have better sealing performance when being installed, so that the sealing performance of the two ends of the pipe fitting (11) when being connected with the pipeline is improved;

s2 natural gas flows through the flow guide holes (112) in the upper flow guide block (110) and the lower flow guide block (111), the flowing gas precisely slaps on the surface of the impeller (17) to drive the impeller (17) to rotate, the impeller (17) can drive the transmission shaft (13) to rotate when rotating, the transmission shaft (13) passes through the amplifier (32) when rotating, the counting meter (31) counts the number of turns of the rotation of the transmission shaft (13), the transmission shaft (13) can drive the limiting shaft (14) to rotate when rotating, the bearing (15) is fixedly connected with the pipe fitting (11), the transmission shaft (13) can be enabled to rotate more stably, and the flowmeter can count the gas flow more accurately;

s3 is when reading data, the protective cover (42) is pressed downwards, the limiting slide block (47) can be driven to vertically slide downwards in the limiting slide groove (48), the limiting slide block (47) can drive the pressing column (49) to trigger the pressing switch (411) when sliding, the LED lamp beads (46) in the groove (45) can be started to illuminate when the pressing switch (411) is pressed, reading of the counting meter (31) is facilitated under the condition of poor visibility, the watchcase of the counting meter (31) can be reinforced and protected through the protective cover (42) in the protection mechanism (4) and the shell (41), the counting meter (31) can be effectively prevented from being damaged, the service life of the flow meter is prolonged, through the transparent glass plate embedded in the observation port (44), dust in air can be effectively prevented from being attached to the surface of the counting meter (31), facilitating viewing of data of the count table (31);

the special flowmeter comprises a guide impeller mechanism (1), a sealing installation mechanism (2), a counting mechanism (3) and a protection mechanism (4), wherein the sealing installation mechanism (2) is arranged at two ends of the guide impeller mechanism (1), the counting mechanism (3) is arranged above the guide impeller mechanism (1), and the protection mechanism (4) is arranged above the counting mechanism (3); the guide impeller mechanism (1) is composed of a pipe fitting (11), a through hole (12), a transmission shaft (13), a shaft sleeve (16), an impeller (17), a flow limiting block (18), a sealing ring (19), an upper flow guide block (110), a lower flow guide block (111) and a flow guide hole (112), wherein the through hole (12) is formed in the pipe wall at the top of the pipe fitting (11), the through hole (12) is communicated with the inside of the pipe fitting (11), the transmission shaft (13) is arranged inside the pipe fitting (11), the transmission shaft (13) is positioned under the through hole (12), the shaft sleeve (16) is fixedly connected to the shaft wall of the transmission shaft (13), a plurality of impellers (17) are fixedly connected to the side wall of the excircle side of the shaft sleeve (16), the intervals among the plurality of impellers (17) are the same, the flow limiting blocks (18) are arranged among the impellers (17), and the flow limiting block (18) is fixedly connected to the outer wall of the shaft sleeve (16), sealing rings (19) are arranged on two sides of the transmission shaft (13), the sealing rings (19) are fixedly connected with the inner pipe wall of the pipe fitting (11), an upper flow guide block (110) and a lower flow guide block (111) are arranged inside the sealing rings (19), the upper flow guide block (110) and the lower flow guide block (111) are respectively and fixedly connected with the inner top wall and the inner bottom wall of the sealing rings (19), and flow guide holes (112) are formed in the connection positions of the upper flow guide block (110) and the lower flow guide block (111);

the sealing installation mechanism (2) is composed of a first connecting flange (21), a second connecting flange (22) and screw holes (23), the first connecting flange (21) is fixedly connected to the outer pipe wall at one end of the pipe fitting (11), the second connecting flange (22) is fixedly connected to the outer pipe wall at one end, far away from the first connecting flange (21), of the pipe fitting (11), the first connecting flange (21) and the second connecting flange (22) are respectively provided with a plurality of screw holes (23), and the screw holes (23) on the first connecting flange (21) and the second connecting flange (22) are arranged at equal intervals;

the counting mechanism (3) is composed of a counting meter (31), an amplifier (32) and a locking nut (33), the amplifier (32) is fixedly installed at the bottom of the counting meter (31), one end of the amplifier (32) penetrates through the through hole (12), the amplifier (32) penetrates through the through hole (12) and extends to one end inside the pipe fitting (11) to be fixedly connected with the transmission shaft (13), and the amplifier (32) is in threaded connection with the locking nut (33) on the side wall above the pipe fitting (11);

the protection mechanism (4) is composed of a shell (41), a protection cover (42), a cover plate (43), an observation port (44), a groove (45), LED lamp beads (46), a limiting sliding block (47), a limiting sliding groove (48), a pressing column (49), an elastic spring (410) and a pressing switch (411), the shell (41) is sleeved on a meter shell of the counting meter (31), the protection cover (42) is sleeved on the outer wall of the shell (41), the cover plate (43) is fixedly connected to the inner wall of the top of the protection cover (42), the observation port (44) is arranged at the top of the cover plate (43), a transparent glass plate is connected to the inner portion of the observation port (44) in an embedded mode, the groove (45) is arranged at the bottom of the cover plate (43) around the observation port (44), a plurality of LED lamps (46) are arranged at equal intervals inside the groove (45), the limiting sliding blocks (47) are fixedly connected to the inner side walls of the two sides of the protection cover plate (42), the outer walls of two sides of the shell (41) are respectively provided with a limiting sliding groove (48) corresponding to the limiting sliding block (47), the limiting sliding grooves (48) are matched with the limiting sliding block (47), the limiting sliding block (47) is connected to the inside of the limiting sliding groove (48) in a sliding mode, the bottom of the limiting sliding block (47) is fixedly connected with a pressing column (49), an elastic spring (410) is sleeved on the column wall of the pressing column (49), one end of the elastic spring (410) is fixedly connected with the limiting sliding block (47), the other end of the elastic spring (410) is fixedly connected with a pressing switch (411), and the pressing switch (411) is fixedly connected to the inner bottom of the limiting sliding groove (48);

one end of the transmission shaft (13) far away from the amplifier (32) is fixedly connected with a limiting shaft (14), the outer shaft wall of the limiting shaft (14) is fixedly connected with a bearing (15), and the bearing (15) is embedded and connected on the pipe wall of the inner bottom of the pipe fitting (11);

the side walls of two ends of the pipe fitting (11) are respectively provided with an embedding groove (113), and rubber sealing rings (24) are embedded and connected in the two embedding grooves (113); all fixedly connected with seal ring (25) on the lateral wall of first flange (21) and second flange (22), seal ring (25) cup joints on the pipe wall of pipe fitting (11), just seal ring (25) are made by rubber materials.