CN211425600U

CN211425600U - Portable orifice flow calibrator

Info

Publication number: CN211425600U
Application number: CN201921950019.7U
Authority: CN
Inventors: 石伟胜
Original assignee: Beijing Hongwei Chaoda Instrument Manufacturing Co ltd
Current assignee: Gao Pengfei
Priority date: 2019-11-12
Filing date: 2019-11-12
Publication date: 2020-09-04
Anticipated expiration: 2029-11-12

Abstract

The utility model relates to a calibrating device technical field of flowmeter, concretely relates to portable drill way flow calibrator, including stock solution spare, reservoir, first class through-hole, gas storage spare, gas storage groove, second class through-hole, intake pipe, connecting portion, intercommunication groove, piston, drive arrangement. The utility model has the advantages that: through rotating ball screw, drive the piston and remove in the reservoir, through the liquid circulation in the reservoir, the drive gets into the gaseous connecting portion of entering of survey in the gas storage tank by the intake pipe to get into the outside gas flowmeter of treating the calibration by connecting portion, to sum up, calibrator in this application compares prior art and has easy and simple to handle, low cost's advantage, in addition portable has set up the closing means, through the break-make electricity of annular electromagnet, controls the intercommunication state of gas storage spare and connecting portion, avoids when surveying the gas temperature higher, causes risks such as scald to the staff.

Description

Portable orifice flow calibrator

Technical Field

The utility model relates to a calibrating device technical field of flowmeter, concretely relates to portable drill way flow calibrator.

Background

At present, a calibration device for a gas flowmeter is mainly used in the field of high-precision calibration, has a complex structure and high manufacturing cost, is relatively complicated in calibration operation, and is not suitable for use with general calibration requirements.

In view of this, chinese patent No. CN201720335965.5 discloses a portable orifice flow calibrator, which includes a liquid storage tube and an air supply chamber, wherein a piston is disposed in the liquid storage tube, the piston is connected to an electric telescopic rod, a liquid outlet is disposed at the right end of the top of the liquid storage tube, the liquid outlet is connected to the lower end of the air supply chamber, a transition tube is disposed at the upper end of the air supply chamber, a hard sponge structure is disposed in the transition tube, and an air outlet at the upper end of the transition tube is connected to an air inlet of a measured flow meter. The utility model discloses simple structure has avoided the use of the high accuracy electronic components of cost, utilizes traditional flow calibration method, has also satisfied the requirement of general calibration precision when effectively reducing the cost of manufacture, and easy operation, convenient to use.

Through electric telescopic handle's promotion in the above-mentioned scheme, make the piston remove, and then the liquid flow in the drive stock solution pipe, but because the electric telescopic handle volume that sets up is great, make calibrating device portable not, remove, during the operation, because electric telescopic handle needs external alternating current power supply, portable's power that can't pass through the battery class supplies power, cause the inconvenient of work, electric telescopic handle's cost and cost of maintenance have also led to manufacturing cost higher in addition.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the problem that exists among the prior art, provide a portable drill way flow calibrator, it can realize reducing manufacturing cost to a certain extent at least, and is easy and simple to handle simultaneously.

In order to realize the technical purpose, the technical effect is achieved, the utility model discloses a realize through following technical scheme:

a portable orifice flow calibrator comprises a liquid storage part, wherein a liquid storage groove in a blind hole form is coaxially arranged in the liquid storage part, a first through hole in a through hole form is coaxially arranged on the liquid storage part, a gas storage part is coaxially fixedly connected with one end of the gas storage part, which is far away from a notch of the liquid storage groove, a gas storage groove in a blind hole form and communicated with the first through hole is coaxially arranged in the gas storage part, a second through hole in a through hole form and communicated with the gas storage groove is coaxially arranged on the gas storage part, a gas inlet pipe communicated with the gas storage groove is arranged on the peripheral surface of the gas storage part, a connecting part is coaxially arranged at one end of the gas storage part, which is far away from the liquid storage part, a communicating groove communicated with the second through hole and communicated with a measuring orifice of an external gas flowmeter is arranged in the connecting part, a piston is coaxially and slidably matched in the liquid storage groove in a clamping manner, the sealing cover is detachably connected to the notch of the liquid storage tank, the screw nut is embedded on the sealing cover, the ball screw threads penetrate through the screw nut, one end of the ball screw penetrates into the liquid storage tank and is rotatably connected with the piston, and the other end of the ball screw penetrates out of the sealing cover.

Further, be equipped with a closing device in the gas storage tank, closing device includes annular electromagnet, sliding plug, elastic component, annular electromagnet coaxial locate in the gas storage tank and with stock solution spare outer wall rigid coupling, mesopore intercommunication on first class through-hole and the annular electromagnet, the coaxial sliding fit of sliding plug locates in the gas storage tank, and it has the iron plate to embed, be equipped with on it with the staggered air discharge duct of second class through-hole, the elastic component is located between annular electromagnet, the sliding plug, and it supports under natural state the sliding plug makes sliding plug and gas storage tank wall counterbalance, and the counterbalance face have airtight, the intake pipe is located between annular electromagnet, the sliding plug.

Furthermore, the elastic part is a pressure spring which is arranged in the air storage groove, and two ends of the elastic direction are respectively and fixedly connected to the annular electromagnet and the sliding plug.

Further, the sealing cover is in threaded connection with the liquid storage part.

Furthermore, a connecting seat is coaxially arranged on the piston, a clamping block is coaxially arranged on the ball screw, and a clamping groove which is used for the clamping block to be embedded and clamped and can rotate freely is arranged on the corresponding connecting seat.

Furthermore, a rotating handle is arranged at one end, exposed out of the liquid storage part, of the ball screw.

The utility model has the advantages that: through rotating ball screw, drive the piston and remove in the reservoir, through the liquid circulation in the reservoir, the drive gets into the gaseous connecting portion of entering of survey in the gas storage tank by the intake pipe to get into the outside gas flowmeter of treating the calibration by connecting portion, to sum up, calibrator in this application compares prior art and has easy and simple to handle, low cost's advantage, in addition portable has set up the closing means, through the break-make electricity of annular electromagnet, controls the intercommunication state of gas storage spare and connecting portion, avoids when surveying the gas temperature higher, causes risks such as scald to the staff.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is an exploded view of the perspective structure of FIG. 1;

the reference numerals are explained below:

the device comprises a liquid storage part 1, a liquid storage groove 2, a liquid storage groove 3, a first through hole 4, a gas storage part 5, a gas storage groove 6, a second through hole 7, a gas inlet pipe 8, a connecting part 9, a communicating groove 10, a piston 11, a sealing cover 12, a ball screw rod 13, a screw rod nut 14, an annular electromagnet 15, a sliding plug 16, an exhaust groove 16, a pressure spring 17, a clamping groove 18, a liquid inlet pipe 19 and a clamping block 20.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

A portable orifice flow calibrator as shown in fig. 1-2, comprising a liquid storage member 1, wherein the liquid storage member 1 is preferably made of transparent material, the outer surface thereof is provided with a plurality of scale marks, a blind hole type liquid storage tank 2 is coaxially arranged therein, a liquid inlet pipe 19 communicated with the liquid storage tank 2 is arranged on the circumferential surface thereof, a through hole type first flow through hole 3 communicated with the liquid storage tank 2 is coaxially arranged thereon, an air storage member 4 is coaxially and fixedly connected to one end of the gas storage member 4 away from the notch of the liquid storage tank 2, a blind hole type air storage tank 5 communicated with the first flow through hole 3 is coaxially arranged in the air storage member 4, a through hole type second flow through hole 6 communicated with the air storage tank 5 is coaxially arranged thereon, an air inlet pipe 7 communicated with the air storage tank 5 is arranged on the circumferential surface thereof, a connecting portion 8 is coaxially arranged on one end of the air storage member 4 away from the liquid storage member 1, and a connecting portion 8 communicated with the second flow through hole 6, And the communicating groove 9 is communicated with the measuring orifice of the external gas flowmeter, a sealing device is arranged in the gas storage groove 5, the sealing device comprises an annular electromagnet 14, a sliding plug 15 and a pressure spring 17, the annular electromagnet 14 is coaxially arranged in the gas storage groove 5 and fixedly connected with the outer wall of the liquid storage part 1, a hole (not shown in the figure) for the power cord of the annular electromagnet 14 to penetrate out in a sealing way is arranged on the gas storage part 4, the first flow through hole 3 is communicated with the middle hole on the annular electromagnet 14, the sliding plug 15 is coaxially and slidably arranged in the gas storage groove 5, an iron block (not shown in the figure) is embedded in the sliding plug 15, an exhaust groove 16 staggered with the second flow through hole 6 is arranged on the sliding plug 15, the pressure spring 17 is arranged between the annular electromagnet 14 and the sliding plug 15, the pressure spring 17 is arranged in the gas storage groove 5, and two ends in the elastic direction are, the air inlet pipe 7 is positioned between the annular electromagnet 14 and the sliding plug 15, the liquid storage tank 2 is coaxially and slidably clamped with a piston 10, the piston 10 is driven to move by a driving device, the driving device comprises a sealing cover 11, a ball screw 12 and a screw nut 13, the sealing cover 11 is detachably connected at the notch of the liquid storage tank 2, particularly, the sealing cover 11 is in threaded connection with the liquid storage part 1, so that the sealing cover 11 is convenient to mount and dismount, the screw nut 13 is embedded on the sealing cover 11, the ball screw 12 is in threaded connection with the screw nut 13, one end of the ball screw penetrates into the liquid storage tank 2 and is rotatably connected with the piston 10, the other end of the ball screw penetrates out of the sealing cover 11, a connecting seat is coaxially arranged on the piston 10, the ball screw 12 is coaxially provided with a clamping block 20, the corresponding connecting seat is provided with a clamping groove 18 which is used for the clamping of the clamping block 20 and can rotate freely, the ball screw 12 is rotatably connected to the piston 10 through the rotation and the limitation of the clamping block 20 in the clamping groove 18, and the ball screw 12 is exposed at one end of the liquid storage part 1 and is provided with a rotating handle.

The utility model discloses when using: the staff connects the connecting part with the measuring hole of the external gas flowmeter to be calibrated through the pipe joint or other connecting parts in the prior art, then pours the water or other liquid which does not react with the measured gas into the liquid storage tank of the liquid storage part through the liquid inlet pipe, and seals the liquid inlet pipe, the sealing mode can arrange a water valve on the liquid inlet pipe, closes the water valve, and isolates the liquid storage tank from the outside, and certainly, the liquid can also be sealed through other mature means, after entering the liquid storage tank, the measured gas is discharged into the gas storage tank through the gas inlet pipe in the prior art, the gas discharging and storing mode in the gas storage tank can firstly evacuate the gas storage tank, then the measured gas is discharged into the gas storage tank by using the principle of negative pressure, of course, other mature means can be used, when the measured gas in the gas storage tank is fully stored, the gas inlet pipe is sealed, the sealing mode can be that an air valve (not shown in the figure) is arranged on the air inlet pipe, the air inlet pipe is closed by closing the air valve, an external power supply (preferably a portable power supply such as a small storage battery) is connected, the annular electromagnet is electrified, when the annular electromagnet is electrified, the annular electromagnet generates magnetic force, suction force is generated on an iron block in the sliding plug, the sliding plug is driven to move towards the direction of the annular electromagnet, the sealing state of the sliding plug and the second through hole is cancelled, at the moment, the gas flowmeter is started by the prior art, the ball screw is manually rotated, the piston is driven to move in the liquid storage tank by screwing of the ball screw and the screw nut, liquid is driven to press the tested gas to enter the circulation tank from the first through hole, the upper middle hole of the annular electromagnet, the upper air inlet groove of the sliding plug and the second through hole, and, the moving distance of the piston is verified by reading scale marks on the liquid storage piece, and finally the gas flowmeter is calibrated by the prior art, wherein in the embodiment, the model of the annular electromagnet is XD phi 300H model manufactured by Nantong Xin magnetic machinery manufacturing company Limited.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a portable drill way flow calibrator, its characterized in that, includes a stock solution spare (1), coaxial reservoir (2) that are equipped with the blind hole form in stock solution spare (1), still coaxial being equipped with on it with reservoir (2) intercommunication, first circulation hole (3) of through-hole form, it keeps away from the coaxial rigid coupling in one end of reservoir (2) notch has gas storage spare (4), coaxial being equipped with in gas storage spare (4) with first circulation hole (3) intercommunication, gas storage tank (5) of blind hole form, still coaxial being equipped with on it with gas storage tank (5) intercommunication, second circulation hole (6) of through-hole form, its global be equipped with intake pipe (7) of gas storage tank (5) intercommunication, stock solution spare (4) keep away from one end coaxial being equipped with connecting portion (8) of stock solution spare (1), be equipped with in connecting portion (8) with the second circulation hole (6) intercommunication, And with the intercommunication groove (9) of outside gas flowmeter measurement drill way intercommunication, coaxial sliding fit block has a piston (10) in reservoir (2), piston (10) are driven its removal by drive arrangement, drive arrangement includes sealed lid (11), ball screw (12), screw-nut (13), sealed lid (11) can be dismantled and connect the notch department at reservoir (2), screw-nut (13) inlay dress is on sealed lid (11), ball screw (12) screw thread wears to establish on screw-nut (13), and its one end is worn to enter in reservoir (2) and is connected with piston (10) rotation, and its other end wears out sealed lid (11).

2. The portable orifice flow calibrator according to claim 1, wherein a sealing device is disposed in the air storage tank (5), the sealing device comprises an annular electromagnet (14), a sliding plug (15), and an elastic member, the annular electromagnet (14) is coaxially disposed in the air storage tank (5) and is fixedly connected to an outer wall of the liquid storage member (1), the first flow hole (3) is communicated with an upper middle hole of the annular electromagnet (14), the sliding plug (15) is coaxially and slidably disposed in the air storage tank (5) and is embedded with an iron block, an exhaust groove (16) staggered from the second flow hole (6) is disposed on the sliding plug (15), the elastic member is disposed between the annular electromagnet (14) and the sliding plug (15), and naturally abuts against the sliding plug (15) to enable the sliding plug (15) to abut against a bottom wall of the air storage tank (5) and have an airtight surface, the air inlet pipe (7) is positioned between the annular electromagnet (14) and the sliding plug (15).

3. The portable orifice flow calibrator according to claim 2, wherein the elastic member is a compression spring (17), the compression spring (17) is disposed in the air storage tank (5), and two ends of the elastic force are respectively and fixedly connected to the annular electromagnet (14) and the sliding plug (15).

4. A portable orifice flow calibrator according to claim 1, wherein the sealing cap (11) is threadably connected to the reservoir (1).

5. The portable orifice flow calibrator according to claim 1, wherein the piston (10) is coaxially provided with a connecting seat, the ball screw (12) is coaxially provided with a fixture block (20), and the corresponding connecting seat is provided with a clamping groove (18) for the fixture block (20) to be inserted and clamped and capable of rotating freely.

6. The portable orifice flow calibrator of claim 5, wherein the end of the ball screw (12) exposed at the reservoir (1) is provided with a rotating knob.