CN112697322B - Method for testing output of desulfurized gypsum vacuum belt conveyor - Google Patents
Method for testing output of desulfurized gypsum vacuum belt conveyor Download PDFInfo
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- CN112697322B CN112697322B CN202011403557.1A CN202011403557A CN112697322B CN 112697322 B CN112697322 B CN 112697322B CN 202011403557 A CN202011403557 A CN 202011403557A CN 112697322 B CN112697322 B CN 112697322B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0061—Force sensors associated with industrial machines or actuators
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/023—Power-transmitting endless elements, e.g. belts or chains
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Abstract
The invention discloses a method for testing the output of a desulfurized gypsum vacuum belt conveyor, which comprises the following steps: (1) sampling gypsum and testing the size and weight of the gypsum; (2) measuring the running speed of the belt; (3) measuring the width of the dewatered gypsum on the belt; (4) and (4) performing output calculation according to the data in the steps (1) to (3). The invention fills the blank of the test work for the performance test of the output of the gypsum dewatering belt through the standardization and the standardization of the method, can truly and effectively reflect the output condition of the desulfurized gypsum dewatering belt, and has the advantages of simplified test, convenient and rapid operation and low cost.
Description
Technical Field
The invention belongs to the technical field of desulfurized gypsum vacuum belt conveyor output testing, and particularly relates to a desulfurized gypsum vacuum belt conveyor output testing method.
Background
The output acceptance test of the desulfurization gypsum vacuum belt conveyor of the thermal power plant is an important content in the performance acceptance test of a desulfurization system of the thermal power plant, and as a test for checking the normal output of the gypsum vacuum belt conveyor, no relevant standard test method can be circulated at home and abroad at present.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: provides a method for testing the output of a desulfurized gypsum vacuum belt conveyor, which aims to solve the problems in the prior art.
The technical scheme adopted by the invention is as follows: a method for testing the output of a desulfurized gypsum vacuum belt conveyor comprises the following steps:
(1) sampling and testing gypsum: sequentially taking three gypsum samples with the area of more than 30cm multiplied by 30cm along the left, middle and right sides of the section of the discharging port of the dehydrated belt, measuring the length, width and height (a, b and c) of each gypsum sample, and then weighing (W) each gypsum sample;
(2) measurement of belt running speed (v): marking a measuring section with the length of 3m(s) on the middle section of the belt by using a tape and a chalk, recording the time (t) from the initial point to the terminal point of the marker along with the operation of the dewatering belt by using a stopwatch, repeating the test for 3 times, and recording;
(3) respectively measuring the width (L) of the dehydrated gypsum on the belt at an upper position, a middle position and a lower position along the running direction of the dehydrated belt and recording;
(4) testing the water content of the gypsum: (a) sampling gypsum: uniformly sampling the sample along the section of the discharge port of the dehydrated leather belt by using a shovel according to three points of left, middle and right, uniformly mixing, and then putting the sample into a ground bottle for sealing, wherein the total amount of the sample is 200 g; (b) after being brought back by laboratory personnel, the gypsum sample is subjected to moisture content (omega) test according to a method for measuring attached water in GB/T5484;
(5) calculation of output
Volume of gypsum
V＝a*b*c (1)
In the formula:
v- -volume of gypsum sampled in cm3；
a- - -the length of the sampled gypsum, the average of three measurements in cm;
b- -the width of the sampled gypsum, the average of the three measurements, in cm;
c- -height (thickness) of the sampled gypsum, average of three measurements in cm;
density of gypsum
In the formula:
rho- - -Gypsum Density, Unit t/m3；
W- -weight of gypsum sampled, average of three measurements in g;
v- -volume of gypsum sampled in cm3；
Speed of belt
In the formula:
v- -belt running speed, unit m/s;
s- -measurement segment length, in m;
t- -average of three measurements, in s;
gypsum dewatering belt output
B＝L*v*c*ρ*36 (4)
In the formula:
b, gypsum dewatering belt output, unit t/h;
l- -Gypsum Width, unit m;
v- -belt speed, in m/s;
c- -height (thickness) of the sampled gypsum, average of three measurements in cm;
rho- - -Gypsum Density, t units/m3；
Output conversion
B' - -output of the gypsum dewatering belt under the design condition, unit t/h
B- -gypsum dewatering belt output, unit t/h
Omega- -water content of gypsum sample, unit%.
Preferably, before the gypsum is sampled, under the normal operation condition of a desulfurization device of a thermal power plant, when the slurry density of an absorption tower reaches the designed dehydration density, a gypsum dehydration system is started to carry out normal dehydration, underflow slurry of a cyclone separator is taken to carry out density test before the test, and after the underflow slurry density reaches the designed range, the output test of a desulfurization vacuum belt conveyor is started.
Preferably, in the step (1), the sample is taken with a spatula.
Preferably, the gypsum removed in the step (1) is placed on a plywood and cut into rectangular blocks by using stainless steel squares.
Preferably, the gypsum size is measured with a ruler in step (1) above.
Preferably, still install the scraper on the above-mentioned plywood, the scraper both ends are connected to two guide bars through two linear bearing, and two guide bars pass through axle bed fixed connection on the plywood, and the cutting edge of scraper can contact stainless steel square up end.
Preferably, the shaft seat is fixed on the plywood through a screw.
Preferably, a rubber cushion block is arranged between the plywood and the shaft seat.
The invention has the beneficial effects that: compared with the prior art, the method disclosed by the invention fills the blank of the test work by standardizing and standardizing the method for the performance test of the output of the gypsum dewatering belt, can truly and effectively reflect the output condition of the desulfurized gypsum dewatering belt, and is simple in test, convenient and rapid to operate and low in cost.
Drawings
FIG. 1 is a process diagram of a gypsum dewatering belt.
Detailed Description
The invention is further described below with reference to specific examples.
Example 1: as shown in fig. 1, a method for testing the output of a desulfurized gypsum vacuum belt conveyor uses the following tools: tape, ruler, stopwatch, ground bottle, beaker 1000ml, hydrometer, electronic platform scale, marker, chalk, shovel, stainless steel square (30cm x 10cm), plywood (50cm x 50cm) 3; the method comprises the following steps:
(1) sampling and testing gypsum: sequentially taking three gypsum samples with the area of more than 30cm multiplied by 30cm along the left, middle and right sides of the section of the discharging port of the dehydrated belt, measuring the length, width and height (a, b and c) of each gypsum sample, and then weighing (W) each gypsum sample;
(2) measurement of belt running speed (v): marking a measuring section with the length of 3m(s) on the middle section of the belt by using a tape and a chalk, recording the time (t) from the initial point to the terminal point of the marker along with the operation of the dewatering belt by using a stopwatch, repeating the test for 3 times, and recording;
(3) respectively measuring the width (L) of the dehydrated gypsum on the belt at an upper position, a middle position and a lower position along the running direction of the dehydrated belt and recording;
(4) testing the water content of the gypsum: (a) sampling gypsum: uniformly sampling the sample along the section of the discharge port of the dehydrated leather belt by using a shovel according to three points of left, middle and right, uniformly mixing, and then putting the sample into a ground bottle for sealing, wherein the total amount of the sample is 200 g; (b) after being brought back by laboratory personnel, the gypsum sample is subjected to moisture content (omega) test according to a method for measuring attached water in GB/T5484;
(5) calculation of output
Volume of gypsum
V＝a*b*c (1)
In the formula:
v- -volume of gypsum sampled in cm3；
a- - -the length of the sampled gypsum, the average of three measurements in cm;
b- -the width of the sampled gypsum, the average of the three measurements, in cm;
c- -height (thickness) of the sampled gypsum, average of three measurements in cm;
density of gypsum
In the formula:
rho- - -Gypsum Density, Unit t/m3；
W- -weight of gypsum sampled, average of three measurements in g;
v- -volume of gypsum sampled in cm3；
Speed of belt
In the formula:
v- -belt running speed, unit m/s;
s- -measurement segment length, in m;
t- -average of three measurements, in s;
gypsum dewatering belt output
B＝L*v*c*ρ*36 (4)
In the formula:
b, gypsum dewatering belt output, unit t/h;
l- -Gypsum Width, unit m;
v- -belt speed, in m/s;
c- -height (thickness) of the sampled gypsum, average of three measurements in cm;
rho- - -Gypsum Density, t units/m3；
Output conversion
B' - -output of the gypsum dewatering belt under the design condition, unit t/h
B- -gypsum dewatering belt output, unit t/h
Omega- -water content of gypsum sample, unit%.
Preferably, before the gypsum is sampled, under the normal operation condition of a desulfurization device of a thermal power plant, when the slurry density of an absorption tower reaches the designed dehydration density, a gypsum dehydration system is started to carry out normal dehydration, underflow slurry of a cyclone separator is taken by a beaker before a test, a density test is carried out by a densimeter, and when the density of the underflow slurry reaches the designed range, a force test of a desulfurization vacuum belt conveyor is started.
Preferably, in the step (1), the sample is taken with a spatula.
Preferably, the gypsum removed in the step (1) is placed on a plywood and cut into rectangular blocks by using stainless steel squares.
Preferably, the gypsum size is measured with a ruler in step (1) above.
Preferably, still install the scraper on the above-mentioned plywood, the scraper both ends are connected to two guide bars through two linear bearing, and two guide bars pass through axle bed fixed connection on the plywood, and the cutting edge of scraper can contact stainless steel square up end, and the guidance quality is good, supports reliable and stable, and the scraper both sides set up the handle.
Preferably, the shaft seat is fixed on the plywood through a screw, and the connection is reliable and stable.
Preferably, set up the cushion between above-mentioned plywood and the axle bed, the altitude mixture control of being convenient for adapts to not co-altitude needs.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention, and therefore, the scope of the present invention should be determined by the scope of the claims.
Claims (8)
1. A method for testing the output of a desulfurized gypsum vacuum belt conveyor is characterized by comprising the following steps: the method comprises the following steps:
(1) sampling and testing gypsum: sequentially taking three gypsum samples with the area larger than 30cm multiplied by 30cm along the left, middle and right sides of the section of the discharging port of the dehydrated belt, measuring the length, width and height of each gypsum sample, and then weighing each gypsum sample;
(2) measurement of belt running speed: marking a measuring section with the length of 3m on the middle section of the belt by using a tape and a chalk, recording the time from the initial point to the terminal point of the marker along with the operation of the dewatering belt by using a stopwatch, repeating the test for 3 times, and recording;
(3) respectively measuring the width of the dehydrated gypsum on the belt at an upper position, a middle position and a lower position along the running direction of the dehydrated belt and recording the width;
(4) testing the water content of the gypsum: (a) sampling gypsum: uniformly sampling the sample along the section of the discharge port of the dehydrated leather belt by using a shovel according to three points of left, middle and right, uniformly mixing, and then putting the sample into a ground bottle for sealing, wherein the total amount of the sample is 200 g; (b) after being brought back by laboratory personnel, the gypsum sample is subjected to moisture content test according to a method for measuring attached water in GB/T5484;
(5) calculation of output
Volume of gypsum
V＝a*b*c (1)
In the formula:
v- -volume of gypsum sampled in cm3；
a- - -the length of the sampled gypsum, the average of three measurements in cm;
b- -the width of the sampled gypsum, the average of the three measurements, in cm;
c- -height of the sampled gypsum, average value of three measurements, unit cm;
density of gypsum
In the formula:
rho- - -Gypsum Density, Unit t/m3；
W- -weight of gypsum sampled, average of three measurements in g;
v- -volume of gypsum sampled in cm3；
Speed of belt
In the formula:
v- -belt running speed, unit m/s;
s- -measurement segment length, in m;
t- -average of three measurements, in s;
gypsum dewatering belt output
B＝L*v*c*ρ*36 (4)
In the formula:
b, gypsum dewatering belt output, unit t/h;
l- -Gypsum Width, unit m;
v- -belt speed, in m/s;
c- -height (thickness) of the sampled gypsum, average of three measurements in cm;
rho- - -Gypsum Density, t units/m3；
Output conversion
B' - -output of the gypsum dewatering belt under the design condition, unit t/h
B- -gypsum dewatering belt output, unit t/h
Omega- -water content of gypsum sample, unit%.
2. The method for testing the output of the desulfurized gypsum vacuum belt conveyor according to claim 1, wherein the method comprises the following steps: before gypsum sampling, under the normal operation condition of a desulfurization device of a thermal power plant, when the slurry density of an absorption tower reaches the designed dehydration density, a gypsum dehydration system is started to carry out normal dehydration, underflow slurry of a cyclone separator is taken by a beaker before a test, a density test is carried out by a densimeter, and when the slurry density of the underflow slurry reaches the designed range, a force test of a desulfurization vacuum belt conveyor is started.
3. The method for testing the output of the desulfurized gypsum vacuum belt conveyor according to claim 1, wherein the method comprises the following steps: and (3) sampling by using a shovel in the step (1).
4. The method for testing the output of the desulfurized gypsum vacuum belt conveyor according to claim 1, wherein the method comprises the following steps: and (2) placing the gypsum taken out in the step (1) on a plywood, and cutting the gypsum into a rectangular body by using a stainless steel grid.
5. The method for testing the output of the desulfurized gypsum vacuum belt conveyor according to claim 1, wherein the method comprises the following steps: and (2) measuring the size of the gypsum by using a ruler in the step (1).
6. The method for testing the output of the desulfurized gypsum vacuum belt conveyor, according to claim 4, is characterized in that: still install the scraper on the plywood, the scraper both ends are connected to two guide bars through two linear bearing, and two guide bars pass through axle bed fixed connection on the plywood, and the cutting edge of scraper can contact stainless steel square up end.
7. The method for testing the output of the desulfurized gypsum vacuum belt conveyor, according to claim 6, is characterized in that: the shaft seat is fixed on the plywood through a screw.
8. The method for testing the output of the desulfurized gypsum vacuum belt conveyor, according to claim 7, is characterized in that: and a rubber cushion block is arranged between the plywood and the shaft seat.
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| CN202011403557.1A CN112697322B (en) | 2020-12-04 | 2020-12-04 | Method for testing output of desulfurized gypsum vacuum belt conveyor |
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| CN202011403557.1A CN112697322B (en) | 2020-12-04 | 2020-12-04 | Method for testing output of desulfurized gypsum vacuum belt conveyor |
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| CN112697322B true CN112697322B (en) | 2022-04-19 |
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|---|---|---|---|---|
| CN1745881A (en) * | 2005-08-16 | 2006-03-15 | 孙克勤 | Gypsum pulp dewatering device and method for wetting smoke desulfurizing system |
| CN105148719A (en) * | 2015-10-19 | 2015-12-16 | 广东电网有限责任公司电力科学研究院 | Improved thermal power plant desulfuration device and improved method thereof |
| CN106845769A (en) * | 2016-12-16 | 2017-06-13 | 华北电力科学研究院有限责任公司 | The identifying system of power station auxiliary equipment dependability |
| CN108404495A (en) * | 2018-05-15 | 2018-08-17 | 大唐环境产业集团股份有限公司 | A kind of control system and method for vacuum belt dewaterer optimization and energy saving |
-
2020
- 2020-12-04 CN CN202011403557.1A patent/CN112697322B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1745881A (en) * | 2005-08-16 | 2006-03-15 | 孙克勤 | Gypsum pulp dewatering device and method for wetting smoke desulfurizing system |
| CN105148719A (en) * | 2015-10-19 | 2015-12-16 | 广东电网有限责任公司电力科学研究院 | Improved thermal power plant desulfuration device and improved method thereof |
| CN106845769A (en) * | 2016-12-16 | 2017-06-13 | 华北电力科学研究院有限责任公司 | The identifying system of power station auxiliary equipment dependability |
| CN108404495A (en) * | 2018-05-15 | 2018-08-17 | 大唐环境产业集团股份有限公司 | A kind of control system and method for vacuum belt dewaterer optimization and energy saving |
Non-Patent Citations (2)
| Title |
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| 《湿法脱硫石膏含水率高诊断分析》;赵蒙等;《资源节约与环保》;20180831(第8期);第10页 * |
| 《火电厂湿法烟气脱硫脱硫石膏脱水问题分析及改进措施》;昌松;《科学技术创新》;20191130(第31期);第44-45页 * |
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