CN204854900U - Wide range piston liquid flow standard device - Google Patents
Wide range piston liquid flow standard device Download PDFInfo
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- CN204854900U CN204854900U CN201520598708.1U CN201520598708U CN204854900U CN 204854900 U CN204854900 U CN 204854900U CN 201520598708 U CN201520598708 U CN 201520598708U CN 204854900 U CN204854900 U CN 204854900U
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- piston rod
- liquid flow
- wide range
- standard device
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Abstract
The utility model relates to a wide range piston liquid flow standard device. The utility model provides a series connection cylinder body is fixed on the base, the grating chi is installed to base one side, one side of series connection cylinder body is connected with middle delivery port and buffering box, buffering box both sides are connected with six solenoid valves, the water inlet of three solenoid valve wherein is connected with the water input tank one end of placing on the support respectively, in addition three solenoid valve the delivery port with place quilt on the workstation and examine the flowmeter entrance and be connected, it is connected with the storage water tank through the straight nonrust steel pipe in back to be examined the flowmeter exit. The utility model discloses a series connection cylinder of standard, its inner wall precision is high, and the cost is practiced thrift to the technology maturation, the piston cylinder that same suit center adjustment used different internal diameters size connects the different flowmeter of examination range as the etalon in the big or small piston cylinder export of different internal diameters, has enlarged the flow range of device greatly.
Description
Technical field
The present invention relates to a kind of liquid flow standard device, especially relate to a kind of wide range piston type liquid flow standard device.
Background technology
Flow metering is widely used in industrial and agricultural production, national defense construction, scientific research foreign trade and daily life every field.In life, the measurement of what we can touch or recognize is mostly large discharge, but along with the development of the industries such as bioengineering, fine chemistry industry and semiconductor manufacturing industry, the demand of tiny flow quantity also highlighting gradually.At present, the flow range of flow standard device calibrating is more single: the flow for the calibrating of large discharge standard set-up is relatively large, and the flow for micro flow standard device calibrating is relatively little.Therefore, for the calibrating of the flowmeter of different range, sometimes just must adopt different standard set-ups, sometimes because the relation of range, cause the precision of calibrating not easily to determine, the effect of examining and determine and result are impacted.
Summary of the invention
For the deficiency of background technology, the object of the present invention is to provide a kind of wide range piston type liquid flow standard device, solve the calibrating for the flowmeter of different range in prior art, different standard set-ups must be adopted, cause the precision of calibrating not easily to determine, the effect of examining and determine and result are impacted, and adopt the mode that ball screw connects with piston rod concentric, plant running precision can be improved greatly, reduce the error of device.
The utility model solves the technical scheme that its technical matters adopts
In the utility model, servomotor is arranged on the upper end steel plate of base through fixed cap, and described servomotor is connected with ball screw one end by shaft coupling, and ball-screw one end is fixed on the vertical steel plate in the right side of base by ball-screw supporting seat; The described ball screw other end is by being connected with piston rod inner, and the ball nut matched with ball screw is fixing with on piston rod flange; Described piston rod flange is fixed by screw and moving mass, and described moving mass and the line slideway be arranged on base fix; The serial cylinders body two sides of matching with piston rod are fixed by screws in the left side of base with on middle vertical steel plate; Two guide poles are parallel across the flange linear bearing on moving mass, its two ends are separately fixed at two blocks of vertical steel plates on base, vertical steel plate wherein placed in the middle is equipped with proximity switch, and opposite side proximity switch is arranged on the proximity switch support that is fixed by screws on base; Grating scale has been installed in base side, and its read head is connected with moving mass by L-type web joint; The both sides of serial cylinders body are all connected with buffer pocket respectively by stainless joint with middle water delivering orifice; The buffer pocket left and right sides is connected with a solenoid valve respectively; The water inlet of one of them solenoid valve is all connected with the water tank inlet one end be placed on support respectively by stainless steel waterpipe, and the water delivering orifice of another solenoid valve is all connected with the tested flowmeter porch of placing on the table respectively by front straight stainless-steel tube; Tested flowmeter outlet place is connected with reserve tank by rear straight stainless-steel tube.
Furtherly, what described serial cylinders body adopted is standard series connected cylinder, and the internal diameter of its left cavity is larger than the internal diameter of right cavity, and two cavity sides are separately fixed on intermediate end cover, and intermediate end cover inside is provided with O-ring seal and guide ring.The diameter of the left chamber bar of described piston rod is less than the diameter of right chamber bar.
Furtherly, when range will expand, adopt three to five cylinders to carry out coaxial combination and form serial cylinders body together.
Furtherly, described piston rod is provided with simultaneously the piston matched with left cavity and right cavity respectively.
Furtherly, described buffer pocket front and back sides is equipped with pressure transducer and temperature sensor respectively.
compared with background technology, the invention has the beneficial effects as follows
Adopt the serial cylinders of standard in the present invention, its inwall precision is high, and technology maturation is cost-saving; Use the cylinder of different inner diameters size as standard in same set of device, connect the different flowmeter of calibrating range at the cylinder outlet of different inner diameters size, greatly expand the flow range of device; The cylinder of different inner diameters size is that concentric connects, and the piston coordinated with the cylinder inner wall of different inner diameters size is fixed on same piston rod, ensure that the calibration accuracy of device; Adopt high precision ball leading screw as piston drive mechanism, with the displacement of optical grating ruler measurement piston; The mode adopting ball screw to connect with piston rod concentric, can improve plant running precision greatly, reduces the error of device.Adopt the multiple piston of same set of drive systems, improve efficiency.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is schematic three dimensional views of the present invention.
Fig. 3 is serial cylinders inner structure schematic diagram of the present invention.
In figure: 1, servomotor; 2, proximity switch; 3, proximity switch support; 4, line slideway; 5, L-type web joint; 6, grating scale; 7, buffer pocket; 8, solenoid valve; 9, stainless steel waterpipe; 10, serial cylinders body; 11, buffer pocket; 12, water tank inlet; 13, support; 14, pressure transducer; 15, buffer pocket; 16, temperature sensor; 17, front straight stainless-steel tube; 18, tested flowmeter; 19, reserve tank; 20, rear straight stainless-steel tube; 21, tested flowmeter; 22, worktable; 23, tested flowmeter; 24, piston rod; 25, guide pole; 26, moving mass; 27, ball screw; 28, base; 29, ball-screw supporting seat; 30, fixed cap; 31, right cavity; 32, piston; 33, intermediate end cover; 34, left cavity; 35, piston.
Embodiment
As shown in Figure 1 to Figure 3, the utility model discloses a kind of wide range piston type liquid flow standard device, servomotor 1 is arranged on the upper end steel plate of base through fixed cap 30, described servomotor 1 is connected with ball screw 27 one end by shaft coupling, and ball-screw 27 one end is fixed on the vertical steel plate in the right side of base 28 by ball-screw supporting seat 29; Described ball screw 27 other end is by being connected with piston rod 24 inside, and the ball nut matched with ball screw 27 is fixing with on piston rod 24 flange; Described piston rod 24 flange is fixed by screw and moving mass 26, and described moving mass 26 fixes with the line slideway 4 be arranged on base 28; Serial cylinders body 10 two sides of matching with piston rod 24 are fixed by screws in the left side of base 28 with on middle vertical steel plate; Two guide poles 25 are parallel across the flange linear bearing on moving mass 26, its two ends are separately fixed at two blocks of vertical steel plates on base 28, vertical steel plate wherein placed in the middle is equipped with proximity switch 2, and opposite side proximity switch 2 is arranged on the proximity switch support 3 that is fixed by screws on base 28; Grating scale 6 has been installed in base 28 side, and its read head is connected with moving mass 26 by L-type web joint 5; The both sides of serial cylinders body 10 are all connected with buffer pocket 7,11,15 respectively by stainless joint with middle water delivering orifice; Buffer pocket 7,11,15 left and right sides is connected with a solenoid valve 8 respectively; The water inlet of one of them solenoid valve 8 is all connected with water tank inlet 12 one end be placed on support 13 respectively by stainless steel waterpipe 9, and the water delivering orifice of another solenoid valve 8 is all connected with tested flowmeter 18,21,23 porch be placed on worktable 22 respectively by front straight stainless-steel tube 17; Tested flowmeter 18,21,23 exit is connected with reserve tank 19 by rear straight stainless-steel tube 20.
What described serial cylinders body 10 adopted is standard series connected cylinder, and the internal diameter of its left cavity 36 is larger than the internal diameter of right cavity 33, and two cavity sides are separately fixed on intermediate end cover 33, and intermediate end cover 33 inside is provided with O-ring seal and guide ring; The diameter of the left chamber bar of described piston rod 24 is less than the diameter of right chamber bar; When range will expand, adopt three to five cylinders to carry out coaxial combination and form serial cylinders body 10 together; Series cylinder body 10 inwall and piston rod 24 are all that stainless steel is made, and have anticorrosive property, ensure that calibration accuracy.
Described piston rod 24 is provided with the piston 35,32 matched with left cavity 34 and right cavity 31 simultaneously, achieves the multiple piston 35,32 of same set of drive systems.
Described buffer pocket 7,11,15 front and back sides is equipped with pressure transducer 14 and temperature sensor 16 respectively.Revise according to the deformation error that temperature and pressure cause by thermal expansivity and the elasticity coefficient of piston cylinder, by this method temperature and pressure is done to device and compensate; Control system is made up of slave computer and host computer PC, and its function is the speed of control piston motion, gathers tested flow meter signal, sensor signal, analyzes verification result.
The course of work of the present utility model is as follows: choose the tested flowmeter 18,21,23 that three kinds of range abilities are different, exports the tested flowmeter 18 larger with range be connected at the left cavity 34 of serial cylinders body 10; The tested flowmeter 21 less with range in the left side outlet of the right cavity 31 of serial cylinders body 10 is connected; The tested flowmeter 23 minimum with range in the right-side outlet of the right cavity 31 of serial cylinders body 10 is connected; Setting calibrating flow, when slave computer control servomotor 1 runs to the left by setting traffic driven piston rod 24, drives left cavity 34 to move with stabilized speed with the piston 35,32 in right cavity 31 simultaneously, produces fluid source.The liquid flowed out by the left cavity 34 of serial cylinders body 10 flows through the larger tested flowmeter 18 of range through buffer pocket 15; The liquid flowed out by right cavity 31 left side outlet of serial cylinders body 10 flows through the less tested flowmeter 21 of range through buffer pocket 11.When slave computer control servomotor 1 runs to the right by setting traffic driven piston rod 24, the liquid flowed out by right cavity 31 right-side outlet of serial cylinders body 10 flows through the minimum tested flowmeter 23 of range through buffer pocket 7.The Displacement Feedback that piston 35,32 moves by grating scale 6 is to control system.The speed that control system control piston 35,32 moves, record temperature, pressure and calibrating time, to be checkedly to fix time, synchronous stopping collection signal, distance according to the left cavity 34 of serial cylinders body 10 and effective internal diameter of right cavity 31 and piston movement can calculate normal flow, by the indicating value of the tested flowmeter 18,21,23 of different range compared with the indicating value of normal flow, the error of indication of the tested flowmeter 18,21,23 of different range can be obtained.
When only needing the tested flowmeter 18 examining and determine relatively large journey, export the tested flowmeter 18 larger with range at the left cavity 34 of serial cylinders body 10 to be connected, right cavity 31 two mouths of serial cylinders body 10 are directly connected with reserve tank 19 by stainless steel waterpipe 9; When only needing to examine and determine the tested flowmeter 21 compared with small-range, the tested flowmeter 18 less with range in right cavity 31 left side outlet of serial cylinders body 10 is connected, and the left cavity 34 of serial cylinders body 10 exports and right cavity 31 right-side outlet of serial cylinders body 10 is directly connected with reserve tank 19 by stainless steel waterpipe 9; When only needing the tested flowmeter 23 examining and determine minimum range, the tested flowmeter 23 minimum with range in right cavity 31 right-side outlet of serial cylinders body 10 is connected, and the left cavity 34 of serial cylinders body 10 exports and right cavity 31 left side outlet of serial cylinders body 10 is directly connected with reserve tank 19 by stainless steel waterpipe 9.
Claims (5)
1. a wide range piston type liquid flow standard device, it is characterized in that: servomotor (1) is arranged on the upper end steel plate of base through fixed cap (30), described servomotor (1) is connected with ball screw (27) one end by shaft coupling, and ball-screw (27) one end is fixed on the vertical steel plate in the right side of base (28) by ball-screw supporting seat (29); Described ball screw (27) other end is by being connected with piston rod (24) inside, and the ball nut matched with ball screw (27) is fixing with on piston rod (24) flange; Described piston rod (24) flange is fixed by screw and moving mass (26), and described moving mass (26) and the line slideway (4) be arranged on base (28) fix; Serial cylinders body (10) two sides of matching with piston rod (24) are fixed by screws in the left side of base (28) with on middle vertical steel plate; Two guide poles (25) are parallel across the flange linear bearing on moving mass (26), its two ends are separately fixed at two blocks of vertical steel plates on base (28), vertical steel plate wherein placed in the middle is equipped with proximity switch (2), opposite side proximity switch (2) is arranged on the proximity switch support (3) that is fixed by screws on base (28); Grating scale (6) has been installed in base (28) side, and its read head is connected with moving mass (26) by L-type web joint (5); The both sides of serial cylinders body (10) are all connected with buffer pocket (7,11,15) respectively by stainless joint with middle water delivering orifice; Buffer pocket (7,11, the 15) left and right sides is connected with a solenoid valve (8) respectively; The water inlet of one of them solenoid valve (8) is all connected with water tank inlet (12) one end be placed on support (13) respectively by stainless steel waterpipe (9), and the water delivering orifice of another solenoid valve (8) is all connected with the tested flowmeter be placed on worktable (22) (18,21,23) porch respectively by front straight stainless-steel tube (17); Tested flowmeter (18,21,23) exit is connected with reserve tank (19) by rear straight stainless-steel tube (20).
2. a kind of wide range piston type liquid flow standard device according to claim 1, it is characterized in that: what described serial cylinders body (10) adopted is standard series connected cylinder, the internal diameter of its left cavity (34) is larger than the internal diameter of right cavity (31), two cavity sides are separately fixed on intermediate end cover (33), intermediate end cover (33) inside is provided with O-ring seal and guide ring, and the diameter of the left chamber bar of described piston rod (24) is less than the diameter of right chamber bar.
3. a kind of wide range piston type liquid flow standard device according to claim 1, is characterized in that: when range will expand, and adopts three to five cylinders to carry out coaxial combination and forms serial cylinders body (10) together.
4. a kind of wide range piston type liquid flow standard device according to claim 1, is characterized in that: described piston rod (24) is provided with simultaneously the piston (35,32) matched with left cavity (34) and right cavity (31) respectively.
5. a kind of wide range piston type liquid flow standard device according to claim 1, is characterized in that: described buffer pocket (7,11,15) front and back sides is equipped with pressure transducer (14) and temperature sensor (16) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520598708.1U CN204854900U (en) | 2015-08-11 | 2015-08-11 | Wide range piston liquid flow standard device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520598708.1U CN204854900U (en) | 2015-08-11 | 2015-08-11 | Wide range piston liquid flow standard device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204854900U true CN204854900U (en) | 2015-12-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520598708.1U Expired - Fee Related CN204854900U (en) | 2015-08-11 | 2015-08-11 | Wide range piston liquid flow standard device |
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| Country | Link |
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| CN (1) | CN204854900U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108375405A (en) * | 2018-01-29 | 2018-08-07 | 中国第汽车股份有限公司 | Liquid flow measurement device and measurement method |
| CN113686416A (en) * | 2021-09-23 | 2021-11-23 | 河北大学 | Eight-valve piston type dynamic flow metering standard device and metering method |
-
2015
- 2015-08-11 CN CN201520598708.1U patent/CN204854900U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108375405A (en) * | 2018-01-29 | 2018-08-07 | 中国第汽车股份有限公司 | Liquid flow measurement device and measurement method |
| CN113686416A (en) * | 2021-09-23 | 2021-11-23 | 河北大学 | Eight-valve piston type dynamic flow metering standard device and metering method |
| CN113686416B (en) * | 2021-09-23 | 2023-08-08 | 河北大学 | Eight-valve piston type dynamic flow metering standard device and metering method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 Termination date: 20160811 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |