CN206618547U - A kind of Sonic Nozzle Gas Flow Standard Device nozzle single channel structure for detecting leakproofness - Google Patents

A kind of Sonic Nozzle Gas Flow Standard Device nozzle single channel structure for detecting leakproofness Download PDF

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Publication number
CN206618547U
CN206618547U CN201720396216.3U CN201720396216U CN206618547U CN 206618547 U CN206618547 U CN 206618547U CN 201720396216 U CN201720396216 U CN 201720396216U CN 206618547 U CN206618547 U CN 206618547U
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China
Prior art keywords
nozzle
tube
channel
sealing
air inlet
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Active
Application number
CN201720396216.3U
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Chinese (zh)
Inventor
陈教郸
黄丽琼
张守阳
周立彬
章国怀
林庆喜
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Tancy Instrument Group Co Ltd
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Tancy Instrument Group Co Ltd
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Priority to CN201720396216.3U priority Critical patent/CN206618547U/en
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Abstract

A kind of Sonic Nozzle Gas Flow Standard Device nozzle single channel structure for detecting leakproofness.Mainly solve when present flow standard device is leaked, it is necessary to the problem of all nozzle sets are pulled down.The utility model provides a kind of Sonic Nozzle Gas Flow Standard Device nozzle single channel structure for detecting leakproofness, including the nozzle being connected and connecting tube, connecting tube upper end is provided with sealing-plug, sealing-plug bottom is provided with the sealing gasket with being connected seal of tube cooperation, the sealing surface of connecting tube and sealing gasket is provided with annular groove, connecting tube circumference wall be provided with annular groove connect for the air inlet pipe that is connected with source of the gas, air inlet pipe is also associated with pressure gauge and switch valve.Gas can be passed through by air inlet pipe, be then shut off switch valve, pressure is observed by observing pressure gauge, if do not have in certain time it is in a substantial change if represent sealing gasket sealing effectiveness preferably, be not required to pull down equipment and can detect, use more facilitates.

Description

A kind of Sonic Nozzle Gas Flow Standard Device nozzle single channel structure for detecting leakproofness
Technical field
The utility model is related to gas metering apparatus field, more particularly to a kind of Sonic Nozzle Gas Flow Standard Device spray Mouth single channel structure for detecting leakproofness.
Background technology
Combustion gas enters branch pipe(tube) from main pipeline, then enters huge numbers of families by lateral again, is entering huge numbers of families A flowmeter will be filled on preceding branch pipe(tube), in order to count the flow into branch pipe(tube), flowmeter needs to carry out before dispatching from the factory Calibrating, whether accurate, stable if examining and determine its flow strength.
, need to be according to flow meter calibration not when carrying out flow meter calibration work using Sonic Nozzle Gas Flow Standard Device With flow value select different Nozzle combinations, in the nozzle sets handoff procedure, cylinder drives sealing-plug to move downward and propped up The end face and compression of escape pipe realize the closing of single channel nozzle, and opposite cylinder drive sealing-plug travels upward and out the end of escape pipe Damaged aging occurs in the unlatching that face single channel nozzle is completed, the sealing rubber pad in opening-closing process repeatedly on sealing-plug, when Leakage problem often occurs, the stated accuracy of standard set-up is had a strong impact on, flow standard device is made up of multigroup nozzle, due to existing Structure can not determine whether single group nozzle leaks, when flow standard device is leaked, it is necessary to which all nozzle sets are pulled down more Change sealing rubber pad.
Utility model content
In order to overcome the shortcomings of background technology, the utility model provides a kind of Sonic Nozzle Gas Flow Standard Device nozzle Single channel structure for detecting leakproofness, is mainly solved when present flow standard device is leaked, it is necessary to by all nozzle assembling and dismantling The problem of lower.
The technical scheme that the utility model is used is:
A kind of Sonic Nozzle Gas Flow Standard Device nozzle single channel structure for detecting leakproofness, including the nozzle being connected and Connecting tube, connecting tube upper end be provided with sealing-plug, sealing-plug bottom be provided be connected the seal of tube coordinate sealing gasket, connecting tube with it is close The sealing surface of packing is provided with annular groove, and connecting tube circumference wall is provided with to be connected with source of the gas with being used for of connecting of annular groove Air inlet pipe, air inlet pipe is also associated with pressure gauge and switch valve.
Switch valve is butterfly valve.
Source of the gas is air pump or hand-held inflator.
Air inlet pipe is set with connecting tube Relative vertical.
Also include gathering tube, air inlet pipe upper end is in gathering tube, and air inlet pipe is below gathering tube, and connecting tube is circumferential Inlet channel is provided with wall, inlet channel one end is connected with annular groove, and one end is connected with air inlet pipe.
The beneficial effects of the utility model are:The utility model provides a kind of Sonic Nozzle Gas Flow Standard Device nozzle Single channel structure for detecting leakproofness, including the nozzle and connecting tube being connected, connecting tube upper end are provided with sealing-plug, and sealing-plug bottom is set There is the sealing gasket with being connected seal of tube cooperation, the sealing surface of connecting tube and sealing gasket is provided with annular groove, connecting tube circumference wall Be provided with annular groove connect for the air inlet pipe that is connected with source of the gas, air inlet pipe is also associated with pressure gauge and switch valve.Can To be passed through gas by air inlet pipe, switch valve is then shut off, pressure is observed by observing pressure gauge, if do not had in certain time Significantly change and then represent sealing gasket sealing effectiveness preferably, be not required to pull down equipment and can detect, use more facilitates.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model one embodiment.
Fig. 2 is the partial schematic sectional view of the utility model one embodiment.
Fig. 3 is the enlarged drawing at Fig. 2A.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings:As illustrated, a kind of sonic nozzle gas flow mark Standard apparatus nozzle single channel structure for detecting leakproofness, including the nozzle 1 and connecting tube 2 being connected, the upper end of connecting tube 2 are provided with sealing-plug 3, the bottom of sealing-plug 3 is provided with seals the sealing gasket 31 coordinated with connecting tube 2, and connecting tube 2 and the sealing surface of sealing gasket 31 are provided with Annular groove 21, the circumferential wall of connecting tube 2 be provided with annular groove 21 connect for the air inlet pipe 22 that is connected with source of the gas, air inlet Pipe 22 is also associated with pressure gauge 23 and switch valve 24.Gas can be passed through by air inlet pipe, be then shut off switch valve, pass through observation Pressure gauge observes pressure, if certain time(Such as 10 minutes)Do not have inside it is in a substantial change then represent sealing gasket sealing effectiveness compared with It is good, it is not required to pull down equipment and can detect, use more facilitates.
In the utility model, as illustrated, switch valve is butterfly valve.Butterfly valve have simple in construction, small volume, it is lightweight, Material consumption is saved, and installation dimension is small, and switch is rapid, 90 ° of reciprocating rotatings, the features such as driving moment is small, for blocking, connecting, adjust The medium in pipeline is saved, with good fluid handling properties and closing sealing property.
In the utility model, as illustrated, source of the gas is air pump or hand-held inflator.Herein can for electronic air pump or The hand-held inflator of person, can be selected according to the actual requirements.
In the utility model, as illustrated, air inlet pipe 22 is set with the Relative vertical of connecting tube 2.Structure is compacter, dress With convenient.
In the utility model, as illustrated, also including gathering tube 4, the upper end of air inlet pipe 22 is in gathering tube 4, air inlet Pipe 22 is provided with inlet channel 26, the one end of inlet channel 26 and annular groove in the lower section of gathering tube 4, and the circumferential wall of connecting tube 4 21 connections, one end is connected with air inlet pipe 22.Air inlet pipe is arranged on the lower section of gathering tube, more convenient when installation is processed, The space inside gathering tube will not be taken, an inlet channel and annular groove are in axial direction opened up in connecting tube circumferential side wall Connection, when use, opens switch valve, starts inflation by hand-held inflator or air pump, by entering when gas enters Gas passage enters in annular groove, is then shut off switch valve and observes manometric change, simple in construction, easy to use.
Embodiment is not construed as to limitation of the present utility model, but any based on changing that spirit of the present utility model is made Enter, all should be within protection domain of the present utility model.

Claims (5)

1. a kind of Sonic Nozzle Gas Flow Standard Device nozzle single channel structure for detecting leakproofness, including the nozzle being connected(1) And connecting tube(2), the connecting tube(2)Upper end is provided with sealing-plug(3), the sealing-plug(3)Bottom is provided with and the connecting tube (2)Seal the sealing gasket coordinated(31), it is characterised in that:The connecting tube(2)With sealing gasket(31)Sealing surface be provided with ring Connected in star(21), the connecting tube(2)Circumferential wall is provided with and annular groove(21)Connection for the air inlet that is connected with source of the gas Pipe(22), the air inlet pipe(22)It is also associated with pressure gauge(23)And switch valve(24).
2. a kind of Sonic Nozzle Gas Flow Standard Device nozzle single channel structure for detecting leakproofness according to claim 1, It is characterized in that:The switch valve is butterfly valve.
3. a kind of Sonic Nozzle Gas Flow Standard Device nozzle single channel structure for detecting leakproofness according to claim 2, It is characterized in that:The source of the gas is air pump or hand-held inflator.
4. a kind of Sonic Nozzle Gas Flow Standard Device nozzle single channel structure for detecting leakproofness according to claim 3, It is characterized in that:The air inlet pipe(22)With the connecting tube(2)Relative vertical is set.
5. a kind of Sonic Nozzle Gas Flow Standard Device nozzle single channel structure for detecting leakproofness according to claim 4, It is characterized in that:Also include gathering tube(4), the air inlet pipe(22)Upper end is located at gathering tube(4)It is interior, the air inlet pipe(22)If In the gathering tube(4)Lower section, and the connecting tube(2)Inlet channel is provided with circumferential wall(26), the inlet channel(26) One end and annular groove(21)Connection, one end and air inlet pipe(22)Connection.
CN201720396216.3U 2017-04-17 2017-04-17 A kind of Sonic Nozzle Gas Flow Standard Device nozzle single channel structure for detecting leakproofness Active CN206618547U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720396216.3U CN206618547U (en) 2017-04-17 2017-04-17 A kind of Sonic Nozzle Gas Flow Standard Device nozzle single channel structure for detecting leakproofness

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720396216.3U CN206618547U (en) 2017-04-17 2017-04-17 A kind of Sonic Nozzle Gas Flow Standard Device nozzle single channel structure for detecting leakproofness

Publications (1)

Publication Number Publication Date
CN206618547U true CN206618547U (en) 2017-11-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201720396216.3U Active CN206618547U (en) 2017-04-17 2017-04-17 A kind of Sonic Nozzle Gas Flow Standard Device nozzle single channel structure for detecting leakproofness

Country Status (1)

Country Link
CN (1) CN206618547U (en)

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