CN108088506B - Sliding closure type gas meter - Google Patents
Sliding closure type gas meter Download PDFInfo
- Publication number
- CN108088506B CN108088506B CN201711172267.9A CN201711172267A CN108088506B CN 108088506 B CN108088506 B CN 108088506B CN 201711172267 A CN201711172267 A CN 201711172267A CN 108088506 B CN108088506 B CN 108088506B
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- Prior art keywords
- sliding
- upper cover
- cover
- wheel
- driving gear
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- 230000005540 biological transmission Effects 0.000 claims abstract description 59
- 230000008878 coupling Effects 0.000 claims description 20
- 238000010168 coupling process Methods 0.000 claims description 20
- 238000005859 coupling reaction Methods 0.000 claims description 20
- 239000012528 membrane Substances 0.000 claims description 9
- 230000007246 mechanism Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
Abstract
The invention discloses a sliding closure type gas meter which solves the problem of relatively poor metering accuracy of the existing meter on gas flow, and comprises a machine body, wherein the upper end part of the machine body is provided with a sliding seat, two sliding covers are arranged on the sliding seat, one sliding cover corresponds to one gas port, an upper cover is fixed on the sliding seat, two driving gears are rotationally arranged on the inner surface of the upper cover, and one driving gear is used for driving one sliding cover to act; a driving gear is rotationally arranged on the inner side of the upper cover on the machine core body, the driving gear is meshed with the two driving gears, a connecting wheel is arranged on the outer side of the upper cover, the connecting wheel and the driving gear are coaxially connected together, an intermediate gear is coaxially arranged between the connecting wheel and the driving gear, a connecting column is eccentrically arranged on the connecting wheel, and the connecting column is respectively connected with the upper ends of the two toggle joints through a connecting rod; the integral counting transmission device is connected with the upper cover, and the counting transmission device is connected with the intermediate gear in a transmission way.
Description
Technical Field
The invention relates to a gas meter for measuring gas flow, in particular to a gas meter which uses a sliding cover to cover or separate a gas port in a machine core.
Background
The Chinese patent application (application number: 201510662805.7) discloses a gas flowmeter, which solves the problem of relatively poor metering sensitivity of the existing gas flowmeter and adopts the following technical measures: the gas flowmeter comprises a machine core, wherein two mutually-separated air cavities are arranged in the machine core, the two air cavities are respectively opened at the upper end part of the machine core, a valve is arranged in each air cavity, the valve is connected with the inner end of a toggle inserted in the machine core, the outer end part of the toggle extends out of the machine core, and a swinging head is fixed at the outer end of the toggle; the swinging head is of a split structure and comprises a body and a replaceable auxiliary head, the connecting bodies on the auxiliary head are used for being in transmission connection with the sliding cover, the positions of the connecting bodies on different auxiliary heads are deviated, and the transmission error between the swinging head and the sliding cover is compensated by the position deviation of the connecting bodies on the auxiliary head.
The upper end part structure of the machine core in the gas meter is relatively complex, the assembly of corresponding parts is inconvenient to realize, and the installation error is easy to generate, so that the metering accuracy of the meter to the gas flow can be influenced.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the sliding closure type gas meter has the advantages that the structure compactness of a machine body in the meter is good, the assembly is convenient, and the accuracy of counting the gas flow is high.
In order to solve the technical problems, the invention adopts the following technical scheme: the sliding closure type gas meter comprises a machine core body, wherein two separated air cavities are arranged in the machine core body, and membrane flaps arranged in the two air cavities are respectively connected with two toggle joints inserted into the machine core body; the upper end part of the machine core body is provided with a sliding seat, two air ports which are respectively communicated with the two air cavities are arranged on the sliding seat, two sliding covers are arranged on the sliding seat, one sliding cover corresponds to one air port, and the two sliding covers are used for staggering and shielding the two air ports or separating from the two air ports; a driving gear is rotationally arranged on the inner side of the upper cover on the machine core body, the driving gear is meshed with the two driving gears, a connecting wheel is arranged on the outer side of the upper cover, the connecting wheel and the driving gear are coaxially connected together, an intermediate gear is coaxially arranged between the connecting wheel and the driving gear, a connecting column is eccentrically arranged on the connecting wheel, and the connecting column is respectively connected with the upper ends of the two toggle joints through a connecting rod; the integral counting transmission device is connected with the upper cover, and the counting transmission device is connected with the intermediate gear in a transmission way.
In the metering surface, the sliding cover is used for covering or separating the air port, so that the air enters the air cavity, or the air enters the air outlet pipe on the machine core body from the air cavity to be conveyed to a user for use. The gas thrust is utilized in the process of gas inlet and outlet of the machine core, the counting transmission device is driven to transmit through a series of transmission, and the metering instrument is connected with the counting transmission device in a transmission way, so that the metering of the gas flow is realized.
Further, the counting transmission device comprises a horizontally arranged connecting cylinder, the connecting cylinder is fixed on the upper cover, an input wheel and an output wheel are coaxially and respectively connected to the outer sides of two ends of the connecting cylinder in a transmission mode, a plurality of transmission columns are integrally formed on the outer end face of the input wheel along the circumferential direction, and the transmission columns are meshed with the intermediate gear. The integral counting transmission device has good structural compactness, and can well ensure the accuracy of the assembly position due to the independent processing and assembly of the components, thereby being convenient for controlling errors.
Further, a connecting plate is integrally formed on two opposite sides of the connecting cylinder in the radial direction, and the connecting plate is used for being attached and fixed with the upper cover. The connecting plate is formed to fix the connecting cylinder and the upper cover, so that the connecting firmness between the connecting cylinder and the upper cover is ensured, the radial stability of the connecting cylinder is good, and a good foundation is provided for stable transmission of the counting transmission device.
Further, a connecting seat is integrally formed at one end of the connecting plate, which is close to the output wheel, and a one-way stop structure acting on the output wheel is arranged on the connecting seat so as to prevent the output wheel from rotating reversely. The fixed foundation of the unidirectional cut-off structure is integrally formed on the connecting plate, so that the unidirectional cut-off structure is good in position stability, the unidirectional cut-off structure can act on the output wheel stably, and the working stability of the output wheel is good.
Further, the two sets of counting transmission devices are respectively arranged on two opposite sides of the intermediate gear along the radial direction of the intermediate gear, and openings are respectively arranged on the upper cover at the output wheels of the two sets of counting transmission devices. This opening supplies the external gas of core to enter into in the air cavity, and, the opening also can provide the setting position of output wheel, the setting of the output wheel of being convenient for the compact structure of core is good, and the flow of output wheel and gas can interact, and makes the smooth and easy nature that admits air good, can effectively guarantee the measurement accuracy to gas.
Further, a pair of parallel and spaced convex strips are formed on the upper surface of the sliding cover along the direction perpendicular to the moving direction of the sliding cover, the guide rods pass through the root parts of the convex strips in a clearance way, two ends of the guide rods are respectively bridged on the upper cover, two pairs of limit posts are arranged on the sliding cover, and the guide rods are inserted between the two limit posts in a clearance way. The matching relation between the sliding cover and the guide rod ensures that the transmission between the sliding cover and the guide rod is smooth, and the position stability of the sliding cover on the guide rod is good.
Further, a -shaped lifting piece is integrally formed on the sliding cover, and the limiting column is integrally formed on the lifting piece. Through setting up the lifting piece, and make be convenient for set up spacing post for the position stability of spacing post is good.
Further, a Z-shaped connecting body is integrally formed on the outer side surface of the sliding seat, a connecting piece is integrally formed on the outer side surface of the upper cover at the position of the connecting body, and the connecting piece is adhered and fixed on the upper surface of the connecting body. Through setting up linking piece and connector, can realize the fixed between upper shield and the slide, the connection of upper shield is fixed conveniently.
Therefore, the invention has the beneficial effects that: the connecting wheel, the driving gear and the intermediate gear are coaxially connected together, and the connecting wheel, the driving gear and the intermediate gear can be integrally manufactured and molded, so that the transmission stability and the structure compactness are good. The upper end of the machine core body is provided with the sliding seat, the upper cover is arranged to wrap the plurality of main transmission gears between the upper cover and the sliding seat, the transmission stability between the gears is good, the movement smoothness of relevant movable parts in the measuring meter is convenient, and the pressure influence of the measuring meter on the gas is small after the gas flows through the measuring meter. The counting transmission device is directly arranged into an integral structure, so that the preparation and assembly of the counting transmission device are facilitated, the structure compactness of the counting transmission device is good, and the metering accuracy of the meter to the gas flow can be effectively ensured. The metering accuracy of the metering table is restored by simply replacing the counting transmission device when the metering error is caused by abrasion of corresponding parts, and the whole metering table is not required to be replaced, so that the operation is convenient, and the use cost is saved.
Drawings
Fig. 1 is a perspective view of the movement of the present gas meter.
Fig. 2 is a structural view of the gas meter core after the upper cover is removed.
Fig. 3 is a top view of the coupling relationship between the gear and the slide cover in the present gas meter.
Fig. 4 is a perspective view of the coupling relationship between the gear and the slide cover in the present gas meter.
Fig. 5 is a perspective view of a counter drive in the present gas meter.
Detailed Description
In the figure, the main structure of the sliding cover type gas meter is a machine core body 1, two separated air cavities are arranged in the machine core body 1, and membrane flaps are arranged in the two air cavities. The membrane flap is of a thin-wall rubber structure, the membrane flap is in a cover shape, and the membrane flap is arched in the air cavity. The machine core 1 is provided with two toggle joints 8 which are arranged in parallel, the inner ends of the toggle joints 8 extend into the air cavity, the inner ends of the toggle joints 8 are connected with the bottom position of the membrane flap through a plate-shaped body, and the outer end parts of the toggle joints 8 are positioned on the upper side of the machine core 1. The machine core body 1 is provided with an air outlet pipe 7, and after gas enters the air cavity in the machine core body 1, the gas flows out of the air outlet pipe 7 to the outer side of the machine core body 1, and in the flowing process of the gas, the flow is measured.
The upper end part of the machine core body 1 is provided with a sliding seat 2, two air ports which are respectively communicated with the two air cavities are arranged on the sliding seat 2, two sliding covers 10 are arranged on the sliding seat 2, and one sliding cover 10 corresponds to one air port. A transmission mechanism is arranged between the sliding cover 10 and the upper end part of the toggle joint 8, and under the action of the transmission mechanism, the two sliding covers 10 are used for staggering and shielding the two air ports or separating from the two air ports. The movement positions of the two sliding covers 10 are staggered, which is determined by the initial assembly positions of the two driving gears 9 and the sliding covers 10, and the initial assembly positions are staggered.
An upper cover 3 is fixed on the slide base 2, two driving gears 9 are rotatably arranged on the inner surface of the upper cover 3, and one driving gear 9 is used for driving a sliding cover 10 to slide on the slide base 2. The inner side of the upper cover 3 on the machine core body 1 is rotatably provided with a driving gear 12, the driving gear 12 is meshed with the two driving gears 9, the outer side of the upper cover 3 is provided with a connecting wheel 5, the connecting wheel 5 and the driving gear 12 are coaxially connected together, an intermediate gear 13 is coaxially arranged between the connecting wheel 5 and the driving gear 12, and the connecting wheel 5, the intermediate gear 13 and the driving gear 12 are generally integrally formed by using a homogeneous material. The connecting wheel 5 is eccentrically provided with a connecting column 51, the connecting column 51 is respectively connected with the upper ends of the two toggle joints 8 through a connecting rod 6, and the connecting rod 6, the driving gear 12, the driven gear and the connecting wheel 5 mainly form the transmission mechanism.
The upper cover 3 is also fixed with a counting transmission device 4, the counting transmission device 4 is of an integral structure, a split structure is arranged between the counting transmission device 4 and the upper cover 3, and transmission connection is realized between the counting transmission device 4 and an intermediate gear 13. The counting transmission device 4 comprises a horizontally arranged connecting cylinder 44, the connecting cylinder 44 is fixed on the upper cover 3, an input wheel 41 and an output wheel 46 are coaxially and respectively connected to the outer sides of two ends of the connecting cylinder 44 in a transmission mode, transmission shafts which are respectively connected with the input wheel 41 and the output wheel 46 into a whole are coaxially fixed together, the two transmission shafts are inserted into the connecting cylinder 44 in a clearance mode, and the end portions, close to each other, of the two transmission shafts are connected and fixed together. A plurality of transmission columns 42 are integrally formed on the outer end surface of the input wheel 41, the transmission columns 42 are uniformly distributed on the outer edge of the outer end surface of the input wheel 41 along the circumferential direction of the input wheel 41, and the transmission columns 42 are meshed with the intermediate gear 13. The diameters of the coupling wheel 5 and the driving gear 12 are larger than the diameter of the intermediate gear 13, the input wheel 41 extends into the interval between the coupling wheel 5 and the driving gear 12 and is connected with the intermediate gear 13, and the coupling stability of the input wheel 41 and the intermediate gear 13 is good.
A coupling plate 43 is integrally formed at opposite sides of the coupling cylinder 44 in the radial direction, the coupling plate 43 is equal in length to the coupling cylinder 44, the coupling plate 43 is attached to the upper cover 3, and the coupling plate 43 is fixed to the upper cover 3 by rivets or fixing bolts.
A coupling seat 45 is integrally formed at one end of the coupling plate 43 adjacent to the output wheel 46, and a one-way stop structure acting on the output wheel 46 is provided on the coupling seat 45. The unidirectional stop structure comprises a unidirectional sheet, the middle position of the unidirectional sheet is hinged on the connecting seat 45, the outer end of the unidirectional sheet extends to the outer peripheral surface of the output wheel 46, a unidirectional limiting opening is arranged on the outer peripheral surface of the output wheel 46, and the unidirectional sheet realizes the reverse rotation stop of the output wheel 46 through the cooperation with the unidirectional limiting opening so as to ensure the accuracy of gas metering.
The two sets of counting transmission devices 4 are arranged on two opposite sides of the intermediate gear 13 along the radial direction of the intermediate gear 13, openings 31 are respectively arranged on the upper cover 3 at the output wheels 46 in the two sets of counting transmission devices 4, and air supplied by the two openings 31 flows into the air cavity in the machine core 1 from the air source outside the machine core 1.
A pair of parallel and spaced convex strips 103 are formed on the upper surface of the sliding cover 10 along the direction perpendicular to the moving direction of the sliding cover 10, and the poking posts on the driving gears 9 corresponding to the sliding cover 10 are inserted into the spaces between the two convex strips 103 in pairs in a clearance way. The guide bar 11 passes through the root of the protruding bar 103 with a gap therebetween, and the engaging portion between the guide bar 11 and the protruding bar 103 is relatively small, so that the friction force between the protruding bar 103 and the guide bar 11 at the time of relative sliding can be reduced. Two ends of the guide rod 11 are respectively bridged on the wall bodies at two opposite sides of the upper cover 3, two pairs of limit posts 102 are arranged on the sliding cover 10, the two pairs of limit posts 102 are positioned at two opposite sides of the raised strips 103, the two pairs of limit posts 102 play a limit role on the guide rod 11, and the guide rod 11 passes between the two limit posts 102 in the pair in a clearance manner. In order to reduce the weight of the sliding cover 10 and facilitate the arrangement of the limiting post 102 on the sliding cover 10, a -shaped lifting piece 101 is integrally formed on the sliding cover 10, and the limiting post 102 is integrally formed on the lifting piece 101.
The cross sections of the upper cover 3 and the sliding seat 2 are equal, and the upper cover 3 is buckled on the upper end surface of the sliding seat 2. In order to fix the upper cover 3, a Z-shaped connecting body is integrally formed on the outer side surface of the sliding seat 2, a connecting piece is integrally formed on the outer side surface of the upper cover 3 at the position of the connecting body, and the connecting piece is attached and fixed on the upper surface of the connecting body through a fastening bolt.
When the sliding closure type gas metering surface works, gas in a gas source enters a corresponding gas cavity from one gas port, the gas pushes a membrane flap to drive a corresponding toggle joint 8 to act, the other gas port is covered by a corresponding sliding closure 10, the toggle joint 8 enables a connecting wheel 5 to act together with a driving gear 12 through a connecting rod 6, the driving gear 12 drives two driving gears 9, one driving gear 9 enables the corresponding sliding closure 10 to move towards the direction of covering the gas port, the other driving gear 9 enables the corresponding sliding closure 10 to move towards the direction of releasing the gas port, and the toggle joint 8 in the other gas cavity can squeeze the membrane flap to enable the gas in the gas cavity to be completely extruded into a gas outlet pipe 7 on the self-movement body 1 and flow out. In this way, the eccentrically arranged coupling posts 51 will overlap the valve movements in the two air chambers into a unidirectional transmission of the counter drive 4, thus realizing the metering of the air flow.
The design characteristic of the meter adopts three integral structures, namely, a driving gear 12, an intermediate gear 13 and a connecting wheel 5 form a whole; the counting transmission device 4 is of an integral structure; an upper housing 3 is provided for suspended mounting of the two drive gears 9. By adopting the integral structures, the transmission errors among the corresponding transmission parts are conveniently controlled, and meanwhile, the correspondingly damaged parts are also convenient to assemble and replace, thereby bringing convenience to industrial application.
Claims (4)
1. The sliding closure type gas meter comprises a machine core body, wherein two separated air cavities are arranged in the machine core body, and membrane flaps arranged in the two air cavities are respectively connected with two toggle joints inserted into the machine core body; the upper end part of the machine core body is provided with a sliding seat, two air ports which are respectively communicated with the two air cavities are arranged on the sliding seat, two sliding covers are arranged on the sliding seat, one sliding cover corresponds to one air port, and the two sliding covers are used for staggering and shielding the two air ports or separating from the two air ports; a driving gear is rotationally arranged on the inner side of the upper cover on the machine core body, the driving gear is meshed with the two driving gears, a connecting wheel is arranged on the outer side of the upper cover, the connecting wheel and the driving gear are coaxially connected together, an intermediate gear is coaxially arranged between the connecting wheel and the driving gear, a connecting column is eccentrically arranged on the connecting wheel, and the connecting column is respectively connected with the upper ends of the two toggle joints through a connecting rod; the integral counting transmission device is connected to the upper cover and is in transmission connection with the intermediate gear;
the counting transmission device comprises a horizontally arranged connecting cylinder, the connecting cylinder is fixed on the upper cover, an input wheel and an output wheel are coaxially and respectively connected with the outer sides of two ends of the connecting cylinder in a transmission way, a plurality of transmission columns are integrally formed and arranged on the outer end face of the input wheel along the circumferential direction, and the transmission columns are meshed with the intermediate gear;
the two opposite sides of the connecting cylinder in the radial direction are respectively integrally formed with a connecting plate, and the connecting plates are used for being attached and fixed with the upper cover; the two sets of counting transmission devices are respectively arranged on two opposite sides of the intermediate gear along the radial direction of the intermediate gear, and openings are respectively arranged at the output wheels of the two sets of counting transmission devices on the upper cover.
2. The gas meter of claim 1, wherein a pair of parallel and spaced convex strips are formed on the upper surface of the sliding cover along the direction perpendicular to the moving direction of the sliding cover, the guide rods pass through the root parts of the convex strips in a clearance way, two ends of the guide rods are respectively bridged on the upper cover, two pairs of limit posts are arranged on the sliding cover, and the guide rods are inserted between the two limit posts in a clearance way.
3. The gas meter of claim 2, wherein the slide cover is integrally formed with a -shaped lift tab, and the stopper post is integrally formed on the lift tab.
4. A gas meter according to claim 1, wherein a Z-shaped coupling body is integrally formed on the outer side surface of the slide, and a coupling piece is integrally formed on the outer side surface of the upper cover at the position of the coupling body, the coupling piece being fitted and fixed on the upper surface of the coupling body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711172267.9A CN108088506B (en) | 2017-11-22 | 2017-11-22 | Sliding closure type gas meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711172267.9A CN108088506B (en) | 2017-11-22 | 2017-11-22 | Sliding closure type gas meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108088506A CN108088506A (en) | 2018-05-29 |
| CN108088506B true CN108088506B (en) | 2024-03-26 |
Family
ID=62172182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711172267.9A Active CN108088506B (en) | 2017-11-22 | 2017-11-22 | Sliding closure type gas meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108088506B (en) |
Citations (9)
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2017
- 2017-11-22 CN CN201711172267.9A patent/CN108088506B/en active Active
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| CN108088506A (en) | 2018-05-29 |
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