CN104897253A - A weighing device for liquid flow standard device - Google Patents
A weighing device for liquid flow standard device Download PDFInfo
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- CN104897253A CN104897253A CN201510302799.4A CN201510302799A CN104897253A CN 104897253 A CN104897253 A CN 104897253A CN 201510302799 A CN201510302799 A CN 201510302799A CN 104897253 A CN104897253 A CN 104897253A
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- weighing
- weighing device
- supporting plate
- mass distribution
- meausring apparatus
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Abstract
The invention discloses weighing equipment for a liquid flow standard device, which comprises a first weighing device, a second weighing device and a mass distribution device, wherein the second weighing device is arranged on the first weighing device, the mass distribution device is arranged on the second weighing device, a water tank is arranged on the mass distribution device, the mass distribution device comprises a supporting plate, a bottom plate, a pre-tightening bolt and a spring, the bottom plate is arranged on a weighing platform of the second weighing device, the supporting plate is positioned above the bottom plate, the bottom plate is connected with the supporting plate through the pre-tightening bolt, the pre-tightening bolt is provided with the spring which is respectively propped against the supporting plate and the bottom plate, two sides of the supporting plate are provided with second weighing device protection devices, and the second weighing device protection devices are arranged on two sides of the second weighing device and positioned above the first weighing device. The invention has simple structure, does not increase cost, ensures the measurement precision, is suitable for any flow standard device based on a mass method, and is easy to realize.
Description
Technical field
The present invention relates to a kind of weighing-appliance, particularly relate to a kind of weighing-appliance for liquid flow standard device.
Background technology
Liquid flow standard device is used for detection and the demarcation of fluid flow instrument.Liquid flow standard device presses measurement instrument classification, is divided into mass method (weight method), volumetric method, volume tube method and method of standard table four kinds.It is high that mass method has precision, the advantage such as easy to operate, be widely adopted when fluid flow calibrating (as ultrasonic water meter, heat energy meter etc.), and as the electronic scales of mass method standard metrology appliance, its precision directly has influence on the calibration accuracy of liquid flow standard device.When examining and determine large discharge, require that electronic scales has certain precision and wide range; When examining and determine low discharge, because the total flow of fluid to be measured is less, higher relative accuracy be reached, just higher to the accuracy requirement of scale, but the electronic scales of superhigh precision, cost is also very high.Also there is at present the Weighing method that partially liq flow standard device is taked as shown in Figure 1, this method arranges 2 water tanks, 2 electronic scaless, the flow direction of water is controlled by T-valve 5, during calibrating low discharge, water flows into little water tank 1, by small-range electronic scales 2 reading, during calibrating large discharge, water flows into large water tank 3, by wide range electronic scales 4 reading, use the electronic scale of general precision just can ensure precision like this, cost is not high yet, but this mode, add the complexity of structure, during fluctuations in discharge, need extra artificial or unit control water (flow) direction.
Summary of the invention
The object of the invention is to solve the shortcoming existed in prior art, and a kind of weighing-appliance for liquid flow standard device proposed.
To achieve these goals, present invention employs following technical scheme:
For a weighing-appliance for liquid flow standard device, comprise the first weighing device, the second weighing device and mass distribution device, the second weighing device arranges on the first weighing device, and the first weighing device range of weighing is 0-G
1, the second weighing device range of weighing is 0-G
2, G
1> G
2, mass distribution device is arranged on the second weighing device, and water tank is arranged on mass distribution device, and water tank and mass distribution installation weight sum are X Kg;
Mass distribution device comprises supporting plate, base plate, pretension bolt and spring, base plate is arranged on the weight-scale table of the second weighing device, supporting plate is positioned at above base plate, base plate is connected with supporting plate by pretension bolt, pretension bolt is provided with the spring offseted with supporting plate and base plate respectively, the pretightning force of spring is Y Kg, supporting plate both sides are provided with the second meausring apparatus protective device, second meausring apparatus protective device is arranged on the second meausring apparatus both sides and is positioned at above the first weighing device, the height of the second meausring apparatus protective device is less than the height sum of pretension bolt and the second weighing device,
As X+Y≤G
1time, the second meausring apparatus protective device of supporting plate both sides is not depressed, and reads the numerical value of weighing on the second weighing device;
Work as G
1≤ X+Y≤G
2time, the second meausring apparatus protective device of supporting plate both sides is depressed and offsets with the first weighing device, reads the numerical value of weighing on the first weighing device.
Preferably, the second meausring apparatus protective device adopts the side plate 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 is one-body molded makes.
Preferably, the first weighing device, the second weighing device all adopt platform balance.
A kind of weighing-appliance for liquid flow standard device that the present invention proposes; second weighing device arranges 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 is arranged the second meausring apparatus protective device and protect the second meausring apparatus, the spring on mass distribution device avoids the second meausring apparatus protective device and the first weighing device to offset for detecting when low discharge is weighed.The present invention is without the need to changing pipeline structure, only need a water tank, when the liquid quality in water tank is less than the threshold value of setting time, read the value of the second weighing device, when the liquid quality in water tank is greater than the threshold value of setting time, read the value of the first weighing device, structure is simple, does not increase cost and ensures measuring accuracy.The present invention is useful on any flow standard device based on mass method, and is easy to realize.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art.
Fig. 2 is the structural representation that the present invention proposes a kind of weighing-appliance for liquid flow standard device.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with specific embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in Figure 2, a kind of weighing-appliance for liquid flow standard device, comprises the first weighing device 1, second weighing device 2 and mass distribution device 3, second weighing device 2 arranges on the first weighing device 1, and the first weighing device 1 range of weighing is 0-G
1, the second weighing device 2 range of weighing is 0-G
2, G
1> G
2, mass distribution device 3 is arranged on the second weighing device 2, and water tank is arranged on mass distribution device 3, and water tank and mass distribution device 3 weight sum are X Kg, mass distribution device 3 comprises supporting plate 31, base plate 32, pretension bolt 33 and spring 34, base plate 32 is arranged on the weight-scale table of the second weighing device 2, supporting plate 31 is positioned at above base plate 32, base plate 32 is connected with supporting plate 31 by pretension bolt 33, pretension bolt 33 is provided with the spring 34 offseted with supporting plate 31 and base plate 32 respectively, the pretightning force of spring 34 is Y Kg, supporting plate 31 both sides are provided with the second meausring apparatus protective device 35, second meausring apparatus protective device 35 is arranged on the second meausring apparatus 2 both sides and is positioned at above the first weighing device 1, the height of the second meausring apparatus protective device 35 is less than the height sum of pretension bolt 33 and the second weighing device 2,
As X+Y≤G
1time, the second meausring apparatus protective device 35 of supporting plate 31 both sides is not depressed, and reads the numerical value of weighing on the second weighing device 2;
Work as G
1≤ X+Y≤G
2time, the second meausring apparatus protective device 35 of supporting plate 31 both sides is depressed and offsets with the first weighing device 1, reads the numerical value of weighing on the first weighing device 1.
In the present invention, the second meausring apparatus protective device 35 adopts and is located at the side plate of supporting plate 31 both sides, and side plate bottom is provided with the leg 36 outwards routed up, and supporting plate 31, side plate, leg 36 is one-body molded makes.In the present embodiment, the first weighing device 1, second weighing device 2 all adopts platform balance.
In a particular embodiment, to examine and determine the calorimeter of DN20, the first meausring apparatus 1 is large scale, and the second meausring apparatus 2 is little scale, and the range selecting large scale is 150kg, and verification scale interval is 50g, and the range of little scale is 30kg, and verification scale interval is 10g.Little scale overlays on large scale, and the mass distribution device 3 be made up of base plate 32, supporting plate 31, spring 34, pretension bolt 33 overlays on little scale, and spring 34 pretightning force is 25kg, and water tank and mass distribution device 3 weight sum are 15kg.During calibrating low discharge, fluid to be measured quality settings is at about 8kg, and now supporting plate 31 is not depressed, and reads the value of little scale.During calibrating large discharge, fluid to be measured quality settings is at about 100kg, and read the value of large scale, now supporting plate 31 is fully depressed, and due to the protection of mass distribution device 3, little scale pressure is not more than 30kg.Examine and determine other flow points, can select according to the size of weighing value the value reading little scale or large scale.For the flow that calibrating is different, the present invention meets requirement in precision and range.
Claims (5)
1. the weighing-appliance for liquid flow standard device, it is characterized in that, comprise the first weighing device (1), the second weighing device (2) and mass distribution device (3), the second weighing device (2) arranges on the first weighing device (1), and the first weighing device (1) range of weighing is 0-G
1, the second weighing device (2) range of weighing is 0-G
2, G
1> G
2, mass distribution device (3) is arranged on the second weighing device (2), and water tank is arranged on mass distribution device (3), and water tank and mass distribution device (3) weight sum are X Kg;
Mass distribution device (3) comprises supporting plate (31), base plate (32), pretension bolt (33) and spring (34), base plate (32) is arranged on the weight-scale table of the second weighing device (2), supporting plate (31) is positioned at base plate (32) top, base plate (32) is connected with supporting plate (31) by pretension bolt (33), pretension bolt (33) is provided with the spring (34) offseted with supporting plate (31) and base plate (32) respectively, the pretightning force of spring (34) is Y Kg, supporting plate (31) both sides are provided with the second meausring apparatus protective device (35), second meausring apparatus protective device (35) is arranged on the second meausring apparatus (2) both sides and is positioned at the first weighing device (1) top, the height of the second meausring apparatus protective device (35) is less than the height sum of pretension bolt (33) and the second weighing device (2),
As X+Y≤G
1time, the second meausring apparatus protective device (35) of supporting plate (31) both sides is not depressed, and reads the numerical value of weighing on the second weighing device (2);
Work as G
1≤ X+Y≤G
2time, the second meausring apparatus protective device (35) of supporting plate (31) both sides is depressed and offsets with the first weighing device (1), reads the numerical value of weighing on the first weighing device (1).
2. the weighing-appliance for liquid flow standard device according to claim 1, is characterized in that, the second meausring apparatus protective device (35) adopts the side plate being located at supporting plate (31) both sides.
3. the weighing-appliance for liquid flow standard device according to claim 2, is characterized in that, side plate bottom is provided with the leg (36) outwards routed up.
4. the weighing-appliance for liquid flow standard device according to claim 1 or 3, is characterized in that, supporting plate (31), side plate, leg (36) is one-body molded makes.
5. the weighing-appliance for liquid flow standard device according to claim 1, is characterized in that, the first weighing device (1), the second weighing device (2) all adopt platform balance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510302799.4A CN104897253B (en) | 2015-06-06 | 2015-06-06 | Weighing equipment 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 | Weighing equipment for liquid flow standard device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104897253A true CN104897253A (en) | 2015-09-09 |
| CN104897253B CN104897253B (en) | 2017-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510302799.4A Active CN104897253B (en) | 2015-06-06 | 2015-06-06 | Weighing equipment for liquid flow standard device |
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| Country | Link |
|---|---|
| CN (1) | CN104897253B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105698905A (en) * | 2016-04-02 | 2016-06-22 | 苏州科技学院 | Sensor assembly |
| CN105937932A (en) * | 2016-01-20 | 2016-09-14 | 申俊 | Double-precision electronic weighing scale having adjusting mechanism |
| CN105937936A (en) * | 2016-01-20 | 2016-09-14 | 申俊 | Dual-step double-precision electronic weighing scale having adjusting mechanism |
| CN105937995A (en) * | 2016-01-20 | 2016-09-14 | 申俊 | Novel combined electronic scale |
| CN105953886A (en) * | 2016-01-20 | 2016-09-21 | 申俊 | Dual-order and dual-precision weighting sensor with adjustment mechanism |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993017307A1 (en) * | 1992-02-26 | 1993-09-02 | The British Petroleum Company Plc | Mass flow prover |
| CN104375520A (en) * | 2014-11-05 | 2015-02-25 | 北京航天计量测试技术研究所 | Device and method for automatically stabilizing water flow |
| 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 |
-
2015
- 2015-06-06 CN CN201510302799.4A patent/CN104897253B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993017307A1 (en) * | 1992-02-26 | 1993-09-02 | The British Petroleum Company Plc | Mass flow prover |
| CN104375520A (en) * | 2014-11-05 | 2015-02-25 | 北京航天计量测试技术研究所 | Device and method for automatically stabilizing water flow |
| 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 |
Non-Patent Citations (3)
| Title |
|---|
| 史振东等: "体积管与静态质量法液体流量标准装置标定与使用比较", 《中国计量》 * |
| 向丽萍等: "一种高精度液体流量标准装置", 《中国测试》 * |
| 芦建芬: "水流量标准装置的节能技术改造", 《石油石化节能》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105937932A (en) * | 2016-01-20 | 2016-09-14 | 申俊 | Double-precision electronic weighing scale having adjusting mechanism |
| CN105937936A (en) * | 2016-01-20 | 2016-09-14 | 申俊 | Dual-step double-precision electronic weighing scale having adjusting mechanism |
| CN105937995A (en) * | 2016-01-20 | 2016-09-14 | 申俊 | Novel combined electronic scale |
| CN105953886A (en) * | 2016-01-20 | 2016-09-21 | 申俊 | Dual-order and dual-precision weighting sensor with adjustment mechanism |
| CN105698905A (en) * | 2016-04-02 | 2016-06-22 | 苏州科技学院 | Sensor assembly |
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| Publication number | Publication date |
|---|---|
| CN104897253B (en) | 2017-08-11 |
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