CN212658320U

CN212658320U - Gas flow standard device

Info

Publication number: CN212658320U
Application number: CN202020964854.2U
Authority: CN
Inventors: 姜芸芸; 曹智敏; 金勰
Original assignee: Shanghai Gas Equipment Measurement And Testing Center Co ltd
Current assignee: Shanghai Gas Equipment Measurement And Testing Center Co ltd
Priority date: 2020-05-30
Filing date: 2020-05-30
Publication date: 2021-03-05
Anticipated expiration: 2030-05-30

Abstract

The utility model discloses a gas flow standard device relates to gas flowmeter examination technical field, and it includes bell jar formula gas flow standard device and frame, be provided with the mounting bracket in the frame, be provided with in the frame and drive actuating cylinder, the telescopic link that drives actuating cylinder is vertical upwards setting, it places the board to be provided with on actuating cylinder's the telescopic link, the mounting bracket is located place the position of board top and be provided with intake pipe and outlet duct, intake pipe and outlet duct are all in the direction that keeps away from each other or be close to along the horizontal direction on the mounting bracket slides, the intake pipe with bell jar formula gas flow standard device's air duct passes through the hose intercommunication. The utility model has the advantages of convenient operation and convenient adjustment.

Description

Gas flow standard device

Technical Field

The utility model belongs to the technical field of gas flowmeter examination technique and specifically relates to a gas flow standard device is related to.

Background

The standard device for detecting, calibrating and checking the gas flowmeter is generally composed of a bell jar, a liquid tank, a signaling mechanism, a pressure compensation mechanism, a gas source and a test pipeline.

The traditional Chinese patent with publication number is that the device discloses a bell-type gas meter calibrating device, which comprises a bell-type gas flow standard device, wherein a gas guide pipe of the bell-type gas flow standard device is provided with a tee joint, the tee joint is respectively provided with two pipelines, and one pipeline is provided with a first electromagnetic valve, a standard meter and a blower; the other pipeline is provided with a second electromagnetic valve, a measured meter and a third electromagnetic valve, the measured meter is arranged on the mounting platform, the lower part of the mounting platform is provided with a bolt, a nut is arranged on the bolt in a matching way, the lower part of the bolt penetrates through the supporting plate on the supporting cylinder, and the bolt is fixedly arranged on the supporting plate.

By adopting the scheme, the worker rotates the bolt to adjust the height of the mounting platform, and the measured meter is adjusted to be at a proper height. However, the height adjustment by the bolt and the nut has low efficiency, and there is a room for improvement.

SUMMERY OF THE UTILITY MODEL

To the technical problem, the utility model aims to provide a gas flow standard device places the height of the vertical gas table on the board through driving actuating cylinder regulation to slide the intake pipe and the outlet duct and set up in the frame, all help improving the work efficiency that the staff adjusted the vertical gas table.

The above technical purpose of the present invention can be achieved by the following technical solutions: the gas flow standard device comprises a bell-type gas flow standard device and a frame, wherein a mounting frame is arranged on the frame, a driving cylinder is arranged on the frame, a telescopic rod of the driving cylinder is vertically and upwards arranged, a placing plate is arranged on the telescopic rod of the driving cylinder, a gas inlet pipe and a gas outlet pipe are arranged at the position above the placing plate, the gas inlet pipe and the gas outlet pipe are arranged on the mounting frame and slide along the direction of mutual separation or approach along the horizontal direction, and the gas inlet pipe is communicated with a gas guide pipe of the bell-type gas flow standard device through a hose.

Through adopting above-mentioned technical scheme, in the application, the staff slides intake pipe and outlet duct according to the distance between the air inlet of vertical gas table and the gas outlet, and reuse drives actuating cylinder and goes up and down to vertical gas table, helps improving the efficiency that the staff adjusted vertical gas table.

The utility model discloses further set up to: rotate on the mounting bracket and be provided with the lead screw, the lead screw is the level setting, the screw thread of lead screw both sides is reverse setting, all be fixed with the slider on intake pipe and the outlet duct, the screw thread has been seted up in the slider, the axial both ends of lead screw are all worn to establish the slider, and the lead screw with slider screw-thread fit.

Through adopting above-mentioned technical scheme, in the application, the staff wears to establish the lead screw with the slider on intake pipe and the outlet duct, slides through lead screw and slider screw-thread fit, helps improving the convenience that intake pipe and outlet duct slided.

The utility model discloses further set up to: and a driving piece used for rotating the screw rod is arranged on the mounting frame.

Through adopting above-mentioned technical scheme, rotate through driving piece drive lead screw to drive two sliders and keep away from each other or be close to. The lead screw rotating device is beneficial to facilitating the rotation of workers to the lead screw and improving the working efficiency of the workers.

The utility model discloses further set up to: the driving piece is a hand wheel, and an output shaft of the hand wheel is coaxially fixed with the screw rod.

Through adopting above-mentioned technical scheme, in the application, the staff drives the lead screw through rotating the hand wheel and rotates, helps making things convenient for the staff to rotate the lead screw.

The utility model discloses further set up to: the vertical gas meter is characterized in that a clamping groove is formed in the placing plate, and the bottom of the vertical gas meter is partially embedded into the clamping groove.

Through adopting above-mentioned technical scheme, in the application, staff spare vertical gas table bottom part embedding draw-in groove helps improving vertical gas table's stability.

The utility model discloses further set up to: the lateral walls of two opposite sides of the clamping groove are provided with springs, and one ends of the springs, which are close to each other, are fixed with baffles.

Through adopting above-mentioned technical scheme, in the application, the staff uses spring and baffle to press from both sides tight vertical gas table chucking, helps further improving the stability of vertical gas table.

The utility model discloses further set up to: and a flow control valve is arranged on a hose which is communicated with the air inlet pipe and the air guide pipe of the bell-type gas flow standard device.

Through adopting above-mentioned technical scheme, in the application, the staff is through adjusting the size of flow control valve regulation gas flow, helps improving the accuracy that gas flow detected.

The utility model discloses further set up to: the intake pipe with the port department of outlet duct all is fixed with the silica gel sealed pad.

By adopting the technical scheme, the silica gel sealing gaskets are fixed at the communicating parts of the air inlet pipe and the air outlet pipe and the air inlet and the air outlet of the vertical gas meter, so that the gas leakage condition in the gas flow detection process is favorably reduced, and the accuracy of gas flow detection is favorably improved.

Compared with the prior art, the beneficial effects of the utility model are as follows:

(1) the height of the vertical gas meter on the placing plate is adjusted by driving the cylinder, and the distance between the gas inlet pipe and the gas outlet pipe is adjusted by using the hand wheel, so that the working efficiency of workers for adjusting the vertical gas meter is improved;

(2) the bottom of the vertical gas meter is partially embedded into the clamping groove, and the vertical gas meter is clamped by the spring and the baffle, so that the stability of the vertical gas meter is improved;

(3) the flow control valve and the silica gel sealing gasket are comprehensively utilized, and the accuracy of gas flow detection operation is improved.

Drawings

FIG. 1 is an axial view of the gas flow calibration apparatus according to the present embodiment;

fig. 2 is a schematic diagram mainly showing a mounting structure of a rack and a vertical gas meter in this embodiment;

fig. 3 is an enlarged view of a part a of fig. 2, which mainly shows a schematic view of a fixing structure of a placing plate and a vertical gas meter;

fig. 4 is a schematic view of the structure of the inlet pipe and the outlet pipe mainly embodied by the rotation of the hand wheel in the embodiment.

Reference numerals: 1. a bell jar gas flow standard device; 11. an air duct; 2. a frame; 21. a driving cylinder; 22. placing the plate; 221. a card slot; 222. a spring; 223. a baffle plate; 3. a mounting frame; 31. an air inlet pipe; 32. an air outlet pipe; 33. a screw rod; 34. a drive member; 341. a hand wheel; 35. a silica gel sealing gasket; 36. a slider; 4. a hose; 41. a flow control valve.

Detailed Description

The present invention will be described in further detail with reference to the following examples and drawings, but the embodiments of the present invention are not limited thereto.

Example (b):

referring to fig. 1 and 2, a gas flow standard device comprises a bell jar type gas flow standard device 1 and a frame 2. The structure of the bell-type gas flow standard device 1 can be seen in a patent number CN 2490553. Be provided with mounting bracket 3 in the frame 2, be provided with in the frame 2 and drive actuating cylinder 21, the telescopic link that drives actuating cylinder 21 is vertical upwards setting, is provided with on the telescopic link that drives actuating cylinder 21 and places board 22. An air inlet pipe 31 and an air outlet pipe 32 are arranged at the position, above the placing plate 22, of the mounting rack 3, the air inlet pipe 31 and the air outlet pipe 32 both slide on the mounting rack 3 along the direction of mutual separation or approach along the horizontal direction, and the air inlet pipe 31 is communicated with the air guide pipe 11 of the bell-type gas flow standard device 1 through a hose 4.

During application, a worker firstly measures the distance between the gas inlet and the gas outlet of the vertical gas meter; then, the gas inlet pipe 31 and the gas outlet pipe 32 are slid, and the vertical gas meter is lifted by using the driving cylinder 21.

Referring to fig. 2 and 3, a card slot 221 is formed in the placing plate 22, and a bottom portion of the vertical gas meter is inserted into the card slot 221. The opposite side walls of the clamping groove 221 are provided with springs 222, and one ends of the two springs 222 close to each other are fixed with a baffle 223.

In the application, a worker puts the vertical gas meter into the clamping groove 221, and then clamps the vertical gas meter in the clamping groove 221 by using the spring 222 and the baffle 223.

Referring to fig. 2 and 4, the mounting frame 3 is rotatably provided with a screw rod 33, the screw rod 33 is horizontally arranged, threads on two sides of the screw rod 33 are reversely arranged, the air inlet pipe 31 and the air outlet pipe 32 are both fixed with a sliding block 36, and the sliding block 36 is internally provided with threads. The mounting frame 3 is provided with a sliding groove, the length direction of the sliding groove is parallel to the axial direction of the screw rod 33, and the sliding block 36 is in sliding fit with the sliding groove. The axial two ends of the screw rod 33 are both penetrated by the sliding blocks 36, and the screw rod 33 is in threaded fit with the sliding blocks 36. A driving piece 34 for rotating the screw rod 33 is arranged on the mounting rack 3, the driving piece 34 is a hand wheel 341, and an output shaft of the hand wheel 341 is coaxially fixed with the screw rod 33.

During the application, the staff wears to establish lead screw 33 the slider 36 of fixing on intake pipe 31 and the outlet duct 32, then uses hand wheel 341 rotation lead screw 33, because lead screw 33 and slider 36 screw-thread fit, when rotating lead screw 33, slider 36 on the lead screw 33 will slide along the direction that the horizontal direction is kept away from each other or is close to on mounting bracket 3.

Referring to fig. 2 and 4, the hose 4 is provided with a flow control valve 41. And a silica gel sealing gasket 35 is fixed at the communication part of the air inlet pipe 31 and the air outlet pipe 32.

During application, a worker adjusts the flow control valve 41 to select proper flow according to the type of the gas meter; then the gas inlet pipe 31 and the gas outlet pipe 32 are communicated with the gas inlet and the gas outlet of the vertical gas meter, and the silica gel sealing gasket 35 is fixed at the communication position, so that the gas leakage is reduced in the gas flow detection process.

The implementation principle of the above embodiment is as follows: in actual work, a worker puts the vertical gas meter into the card slot 221 on the placing plate 22; then, the vertical gas meter is clamped in the clamping groove 221 by using the spring 222 and the baffle 223; then the hand wheel 341 is rotated to rotate the screw rod 33, and the screw rod 33 drives the air inlet pipe 31 and the slide block 36 on the air outlet pipe 32 to slide by the distance; then, communicating the gas inlet of the vertical gas meter with a gas inlet pipe 31, and communicating the gas outlet of the vertical gas meter with a gas outlet pipe 32; finally, the staff adjusts the flow control valve 41 to select a proper flow rate to perform the gas flow rate detection operation of the vertical gas meter.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The gas flow standard device comprises a bell-type gas flow standard device (1) and a frame (2), and is characterized in that a mounting frame (3) is arranged on the frame (2), a driving cylinder (21) is arranged on the frame (2), a telescopic rod of the driving cylinder (21) is vertically and upwards arranged, a placing plate (22) is arranged on the telescopic rod of the driving cylinder (21), a gas inlet pipe (31) and a gas outlet pipe (32) are arranged at the position, above the placing plate (22), of the mounting frame (3), the gas inlet pipe (31) and the gas outlet pipe (32) slide on the mounting frame (3) along the direction in which the gas inlet pipe (31) and the gas outlet pipe (11) of the bell-type gas flow standard device (1) are far away from or close to each other in the horizontal direction, and are communicated through a hose (4).

2. The gas flow standard device according to claim 1, wherein a screw rod (33) is rotatably disposed on the mounting frame (3), the screw rod (33) is horizontally disposed, threads on two sides of the screw rod (33) are oppositely disposed, sliding blocks (36) are fixed on the gas inlet pipe (31) and the gas outlet pipe (32), a sliding groove is disposed on the mounting frame (3), a length direction of the sliding groove is parallel to an axial direction of the screw rod (33), the sliding blocks (36) are slidably engaged with the sliding groove, threads are disposed in the sliding blocks (36), the sliding blocks (36) are disposed at two axial ends of the screw rod (33), and the screw rod (33) is engaged with the sliding blocks (36) in a threaded manner.

3. A gas flow calibration device according to claim 2, characterised in that said mounting frame (3) is provided with a drive member (34) for rotating said screw (33).

4. A gas flow calibration device according to claim 3, wherein said drive member (34) is a hand wheel (341), and an output shaft of said hand wheel (341) is coaxially fixed with said screw (33).

5. The gas flow standard device according to claim 1, wherein the placing plate (22) is provided with a clamping groove (221), and the bottom part of the vertical gas meter is embedded in the clamping groove (221).

6. A gas flow standard device according to claim 5, wherein the opposite side walls of the slot (221) are provided with springs (222), and the end of each spring (222) close to each other is fixed with a baffle (223).

7. A gas flow calibration device according to claim 1, characterised in that a flow control valve (41) is provided on the hose (4) communicating between the inlet pipe (31) and the gas duct (11) of the bell gas flow calibration device (1).

8. A gas flow calibration device according to claim 1, wherein silica gel gaskets (35) are fixed at the ports of the gas inlet pipe (31) and the gas outlet pipe (32).