CN104897253B - A kind of weighing-appliance for liquid flow standard device - Google Patents
A kind of weighing-appliance for liquid flow standard device Download PDFInfo
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- CN104897253B CN104897253B CN201510302799.4A CN201510302799A CN104897253B CN 104897253 B CN104897253 B CN 104897253B CN 201510302799 A CN201510302799 A CN 201510302799A CN 104897253 B CN104897253 B CN 104897253B
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Abstract
The invention discloses a kind of weighing-appliance for liquid flow standard device, including the first weighing device, second weighing device and mass distribution device, second weighing device is set on the first weighing device, mass distribution device is arranged on the second weighing device, water tank is arranged on mass distribution device, mass distribution device includes supporting plate, bottom plate, pretension bolt and spring, bottom plate is arranged on the weight-scale table of the second weighing device, supporting plate is located above bottom plate, bottom plate is connected by pretension bolt with supporting plate, pretension bolt is provided with the spring offseted respectively with supporting plate and bottom plate, supporting plate both sides are provided with the second meausring apparatus protection device, second meausring apparatus protection device is arranged on the second meausring apparatus both sides and above the first weighing device.The present invention is simple in construction, does not increase cost and ensures measurement accuracy, is useful on any flow standard device based on mass method, and be easily achieved.
Description
Technical field
The present invention relates to a kind of weighing-appliance, more particularly to a kind of weighing-appliance for liquid flow standard device.
Background technology
Liquid flow standard device is used for the detection and demarcation of fluid flow instrument.Liquid flow standard device presses meter
Tool classification, is divided into four kinds of mass method (weight method), volumetric method, volume tube method and method of standard table.Mass method has precision high, operation
The advantages of facilitating, is widely adopted in fluid flow calibrating (such as ultrasonic water meter, heat energy meter), and is used as mass method standard
The electronic scale of measurement instrument, its precision directly influences the calibration accuracy of liquid flow standard device., when examining and determine big flow
Electronic scale is asked to have certain precision and wide range；Examine and determine low discharge when, because the total flow of fluid to be measured is smaller, to reach compared with
High relative accuracy, the required precision to scale is just higher, but the electronic scale of superhigh precision, and cost is also very high.Also there is portion at present
Point liquid flow standard device takes Weighing method as shown in Figure 1, and this method sets 2 water tanks, 2 electronic scales, water
Flow direction is controlled by triple valve 5, and water flows into small water tank 1 during calibrating low discharge, by the reading of small-range electronic scale 2, during calibrating big flow
Water flows into large water tank 3, by the reading of wide range electronic scale 4, so using the electronic scale of general precision it is ensured that precision, cost
It is not high, but this mode, the complexity of structure is added, it is necessary to extra artificial or component controls water during changes in flow rate
Flow direction.
The content of the invention
The invention aims to solve shortcoming present in prior art, and the one kind proposed is used for fluid flow mark
The weighing-appliance of standard apparatus.
To achieve these goals, present invention employs following technical scheme：
A kind of weighing-appliance for liquid flow standard device, including the first weighing device, the second weighing device and matter
Distributor is measured, the second weighing device is set on the first weighing device, the first weighing device weighs range for 0-G1, second weighs
Device weighs range for 0-G2,G1＞ G2, mass distribution device is arranged on the second weighing device, and water tank is arranged on mass distribution
On device, water tank and mass distribution installation weight sum are X Kg；
Mass distribution device includes supporting plate, bottom plate, pretension bolt and spring, and bottom plate is arranged on the weighing of the second weighing device
On platform, supporting plate is located above bottom plate, and bottom plate is connected by pretension bolt with supporting plate, pretension bolt be provided with respectively with supporting plate and bottom
The spring that plate offsets, the pretightning force of spring is slightly less than the maximum range G of the second Weighing apparatus for Y Kg, Y2, supporting plate both sides are provided with
Second meausring apparatus protection device, the second meausring apparatus protection device is arranged on the second meausring apparatus both sides and weighed positioned at first
Above device, the height of the second meausring apparatus protection device is less than the height sum of pretension bolt and the second weighing device；
As X ＜ Y1When, the second meausring apparatus protection device of supporting plate both sides is not depressed, reads on the second weighing device
Weigh numerical value；
As X >=Y, the second meausring apparatus protection device of supporting plate both sides is depressed to offset with the first weighing device, reads
Numerical value of weighing on first weighing device.
Preferably, the second meausring apparatus protection device is using the side plate for being located at supporting plate both sides.
Preferably, side plate bottom is provided with the leg outwards routed up.
Preferably, supporting plate, side plate, leg, which are integrally formed, is made.
Preferably, the first weighing device, the second weighing device use platform balance.
A kind of weighing-appliance for liquid flow standard device proposed by the present invention, the second weighing device sets first to claim
Refitting is put, and mass distribution device is arranged on the second weighing device, and water tank is arranged on mass distribution device, mass distribution dress
Putting the second meausring apparatus protection device of setting protects the spring on the second meausring apparatus, mass distribution device to be used to detect rill
Amount avoids the second meausring apparatus protection device from being offseted with the first weighing device when weighing.The present invention need not change pipeline structure, only
A water tank is needed, when the liquid quality in water tank is less than the threshold value of setting, the value of the second weighing device is read, works as water
When liquid quality in case is more than the threshold value of setting, read the value of the first weighing device, it is simple in construction, do not increase cost and
Ensure measurement accuracy.The present invention is useful on any flow standard device based on mass method, and is easily achieved.
Brief description of the drawings
Fig. 1 is the structural representation of prior art.
Fig. 2 proposes a kind of structural representation of weighing-appliance for liquid flow standard device for the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with specific embodiment, to this
Invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, not
For limiting the present invention.
As shown in Fig. 2 a kind of weighing-appliance for liquid flow standard device, including the first weighing device 1, second claim
2 and mass distribution device 3 are put in refitting, and the second weighing device 2 is set on the first weighing device 1, and the first weighing device 1 is weighed range
For 0-G1, the second weighing device 2 weighs range for 0-G2,G1＞ G2, mass distribution device 3 is arranged on the second weighing device 2,
Water tank is arranged on mass distribution device 3, and water tank and the weight sum of mass distribution device 3 are X Kg；Mass distribution device 3 includes
Supporting plate 31, bottom plate 32, pretension bolt 33 and spring 34, bottom plate 32 are arranged on the weight-scale table of the second weighing device 2, supporting plate 31
In the top of bottom plate 32, bottom plate 32 is connected by pretension bolt 33 with supporting plate 31, pretension bolt 33 be provided with respectively with supporting plate 31 and
The spring 34 that bottom plate 32 offsets, the pretightning force of spring 34 is Y Kg, and the both sides of supporting plate 31 are provided with the second meausring apparatus protection device 35,
Second meausring apparatus protection device 35 is arranged on the both sides of the second meausring apparatus 2 and weighed positioned at the top of the first weighing device 1, second
The height of unit protection device 35 is less than the height sum of the weighing device 2 of pretension bolt 33 and second；As X+Y≤G1When, supporting plate
Second meausring apparatus protection device 35 of 31 both sides is not depressed, reads the numerical value of weighing on the second weighing device 2；Work as G1≤X+
Y≤G2When, the second meausring apparatus protection device 35 of the both sides of supporting plate 31 is depressed to offset with the first weighing device 1, reads first
Numerical value of weighing on weighing device 1.
In the present invention, the second meausring apparatus protection device 35 is using the side plate for being located at the both sides of supporting plate 31, and side plate bottom is provided with
The leg 36 outwards routed up, supporting plate 31, side plate, leg 36 are integrally formed and are made.In the present embodiment, the first weighing device 1, second
Weighing device 2 uses platform balance.
In a particular embodiment, by taking the calorimeter for examining and determine DN20 as an example, the first meausring apparatus 1 is large scale, and second weighs dress
It is small scale to put 2, and the range of selection large scale is 150kg, and verification scale interval is 50g, and the range of small scale is 30kg, and verification scale interval is
10g.Small scale is overlayed on large scale, and the mass distribution device 3 being made up of bottom plate 32, supporting plate 31, spring 34, pretension bolt 33 is folded
It is placed on small scale, the pretightning force of spring 34 is 25kg, water tank and the weight sum of mass distribution device 3 are 15kg.Examine and determine low discharge
When, fluid to be measured quality settings are not depressed in 8kg or so, now supporting plate 31, read the value of small scale.When examining and determine big flow, quilt
Survey liquid quality and be set in 100kg or so, read the value of large scale, now supporting plate 31 is fully depressed, due to mass distribution device 3
Protection, small scale pressure is not more than 30kg.Examine and determine other flow points, can be read according to the selection of the size of weighing value small scale or
The value of large scale.For examining and determine different flows, the present invention meets requirement in precision and range.
Claims (5)
1. a kind of weighing-appliance for liquid flow standard device, it is characterised in that including the first weighing device (1), second
Weighing device (2) and mass distribution device (3), the second weighing device (2) are set on the first weighing device (1), and first weighs dress
Put (1) and weigh range for 0-G 1, the second weighing device (2) weighs range for 0-G 2, and the ＞ G2 of G 1, mass distribution device (3) is set
Put on the second weighing device (2), water tank is arranged on mass distribution device (3), water tank and mass distribution device (3) weight it
With for X Kg；Mass distribution device (3) includes supporting plate (31), bottom plate (32), pretension bolt (33) and spring (34), bottom plate (32)
On the weight-scale table for being arranged on the second weighing device (2), supporting plate (31) is located above bottom plate (32), and bottom plate (32) passes through pretension bolt
(33) it is connected with supporting plate (31), pretension bolt (33) is provided with the spring (34) offseted respectively with supporting plate (31) and bottom plate (32),
The pretightning force of spring (34) is Y Kg, and supporting plate (31) both sides are provided with the second meausring apparatus protection device (35), the second meausring apparatus
Protection device (35) is arranged on the second meausring apparatus (2) both sides and above the first weighing device (1), and the second meausring apparatus is protected
The height of protection unit (35) is less than the height sum of pretension bolt (33) and the second weighing device (2)；As X ＜ Y, supporting plate (31)
Second meausring apparatus protection device (35) of both sides is not depressed, reads the numerical value of weighing on the second weighing device (2)；As X >=Y
When, the second meausring apparatus protection device (35) of supporting plate (31) both sides is depressed to offset with the first weighing device (1), reads first
Numerical value of weighing on weighing device (1).
2. the weighing-appliance according to claim 1 for liquid flow standard device, it is characterised in that second weighs dress
Protection device (35) is put using the side plate for being located at supporting plate (31) both sides.
3. the weighing-appliance according to claim 2 for liquid flow standard device, it is characterised in that side plate bottom is set
Have it is turned-out go out leg (36).
4. the weighing-appliance for liquid flow standard device according to claim 1 or 3, it is characterised in that supporting plate
(31), side plate, leg (36) are integrally formed and are made.
5. the weighing-appliance according to claim 1 for liquid flow standard device, it is characterised in that first weighs dress
Put (1), the second weighing device (2) and use platform balance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510302799.4A CN104897253B (en) | 2015-06-06 | 2015-06-06 | A kind of weighing-appliance for liquid flow standard device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510302799.4A CN104897253B (en) | 2015-06-06 | 2015-06-06 | A kind of weighing-appliance for liquid flow standard device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104897253A CN104897253A (en) | 2015-09-09 |
| CN104897253B true CN104897253B (en) | 2017-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510302799.4A Active CN104897253B (en) | 2015-06-06 | 2015-06-06 | A kind of weighing-appliance for liquid flow standard device |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953886A (en) * | 2016-01-20 | 2016-09-21 | 申俊 | Dual-order and dual-precision weighting sensor with adjustment mechanism |
| CN105937995A (en) * | 2016-01-20 | 2016-09-14 | 申俊 | Novel combined electronic scale |
| CN106017631A (en) * | 2016-01-20 | 2016-10-12 | 滁州贝腾特电器有限公司 | Two-precision weighing electronic scale |
| CN105937936A (en) * | 2016-01-20 | 2016-09-14 | 申俊 | Dual-step double-precision electronic weighing scale having adjusting mechanism |
| CN105698905A (en) * | 2016-04-02 | 2016-06-22 | 苏州科技学院 | Sensor assembly |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9204065D0 (en) * | 1992-02-26 | 1992-04-08 | British Petroleum Co Plc | Improvements relating to flow measurement |
| CN204229244U (en) * | 2014-11-05 | 2015-03-25 | 北京航天计量测试技术研究所 | A kind of device of autostable discharge |
| CN104375520B (en) * | 2014-11-05 | 2017-10-27 | 北京航天计量测试技术研究所 | A kind of device and method of automatic stabilisation water-carrying capacity |
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