CN110174341B - Metering method and device for concrete impermeability instrument - Google Patents
Metering method and device for concrete impermeability instrument Download PDFInfo
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- CN110174341B CN110174341B CN201910492691.4A CN201910492691A CN110174341B CN 110174341 B CN110174341 B CN 110174341B CN 201910492691 A CN201910492691 A CN 201910492691A CN 110174341 B CN110174341 B CN 110174341B
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- 238000000034 method Methods 0.000 title claims abstract description 69
- 238000012360 testing method Methods 0.000 claims abstract description 168
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 89
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 81
- 238000005259 measurement Methods 0.000 claims abstract description 33
- 238000012795 verification Methods 0.000 claims abstract description 22
- 238000012545 processing Methods 0.000 claims description 27
- 230000004907 flux Effects 0.000 claims description 4
- 238000010276 construction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
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Abstract
The invention provides a metering method and a metering device of a concrete impermeability instrument, wherein the method comprises the following steps: controlling and opening an electromagnetic valve of a test mould corresponding pipeline of the concrete impermeability instrument to be tested, and collecting a water outlet pressure value of the test mould and a pressure value of a standard pressure sensor by the collecting device; determining a stable pressure sequence when the water outlet pressure value of the test die reaches the working pressure, and determining the stable pressure value of the test die according to the stable pressure sequence; calculating an indication pressure error DeltaP Showing the corresponding to the test mode according to the stable pressure value and the pressure value of the standard pressure sensor corresponding to the stable pressure value at the same time; when the indication pressure error DeltaP Showing the is judged to be larger than a preset indication pressure error threshold, marking the error measurement result of the voltage stabilizing period corresponding to the test mode as unqualified. The invention introduces an automatic verification concept, reduces human intervention in the measurement process, ensures the consistency of the measurement process, has more accurate measurement result and higher working efficiency.
Description
Technical Field
The invention relates to the technical field of metering, in particular to a metering method and device of a concrete impermeability instrument.
Background
The concrete impermeability instrument is used for detecting the waterproof performance of the hardened concrete and measuring the impermeability grade of the concrete, and is a necessary measuring instrument for concrete premix enterprises and construction engineering quality detection laboratories. The concrete impermeability instrument uses the principle that the pressure in the sealed container is equal everywhere, uses the water pump to deliver pressure to the whole system, and controls the pressure by the pressure instrument and the controller, so as to realize that the water pressure permeates into the test piece pressed in the test mould from bottom to top, thereby measuring the impermeability performance of the test piece and calculating the impermeability index of the test piece.
When the concrete impermeability instrument and the metering method in the prior art are used for metering, the pressure is required to be manually adjusted when the concrete impermeability instrument and the metering method are pressurized step by step in the metering process, and the pressure is required to be manually observed and recorded; on the other hand, the metering period is long, the efficiency is low, and the automatic operation cannot be realized.
Disclosure of Invention
The present invention is directed to solving the problems described above. It is an object of the present invention to provide a method and apparatus for metering a concrete permeation resistant engine that addresses any of the above problems. Specifically, the invention provides a metering method and a metering device of a concrete impermeability instrument, which can be operated automatically, lighten labor intensity and save manpower.
According to a first aspect of the present invention, there is provided a method of metering a concrete impermeability apparatus, the method comprising: step 1, controlling and starting an electromagnetic valve of a test mould corresponding pipeline of a concrete impermeability instrument to be tested, and collecting a water outlet pressure value of the test mould and a pressure value of a standard pressure sensor according to a preset collecting frequency by an collecting device, wherein the test mould is pressurized according to a preset pressure stabilizing period and a working pressure corresponding to the pressure stabilizing period; step 2, determining a stable pressure sequence when the water outlet pressure value of the test die reaches the working pressure, and determining the stable pressure value of the test die according to the stable pressure sequence; step 3, calculating an indication pressure error DeltaP Showing the corresponding to the test mode according to the stable pressure value and the pressure value of the standard pressure sensor corresponding to the stable pressure value at the same time; and 4, when the indication pressure error DeltaP Showing the is judged to be larger than a preset indication pressure error threshold, marking that an error metering result of the voltage stabilizing period corresponding to the test mode is unqualified.
The metering method of the concrete impermeability instrument can also have the following characteristics:
the method for determining the stable pressure value of the test die according to the stable pressure sequence comprises the following steps: taking the difference value of the water outlet pressure values of the test molds corresponding to two adjacent moments as a sequence element to generate a difference value pressure sequence; determining a plurality of continuous sequence elements larger than a preset difference threshold value in the difference pressure sequence, and generating a stable pressure sequence from the water outlet pressure value of the test model corresponding to the sequence elements; the first sequence element of the steady-state pressure sequence is noted as the steady-state pressure value.
The metering method of the concrete impermeability instrument can also have the following characteristics:
The computing method further comprises the following steps: recording the maximum absolute value or the minimum absolute value of the water outlet pressure value of the test mould after the moment corresponding to the stable pressure value as a fluctuation pressure value, and calculating an indication pressure fluctuation error delta P Wave-guide according to the fluctuation pressure value and the working pressure; and when the indication pressure fluctuation error DeltaP Wave-guide is judged to be larger than a preset indication pressure fluctuation threshold, marking that a fluctuation metering result of the voltage stabilizing period corresponding to the test mode is unqualified.
The metering method of the concrete impermeability instrument can also have the following characteristics:
The metering method further comprises the following steps: the step 1 comprises the following steps: the pipeline is communicated with water outlets of all test molds of the concrete impermeability instrument to be tested in a suction way; controlling to open an exhaust valve to exhaust all test die water outlets and corresponding pipelines according to preset exhaust time, and closing electromagnetic valves of the exhaust valve and the corresponding pipelines of the water outlet of any test die; pressurizing the concrete impermeability instrument to be tested according to a set plurality of pressure stabilizing periods and working pressures corresponding to the pressure stabilizing periods;
the metering method of the concrete impermeability instrument can also have the following characteristics:
The metering method further comprises the following steps: judging whether the pressurizing process of the concrete impermeability instrument to be tested is finished according to a plurality of set pressure stabilizing periods and working pressures corresponding to the pressure stabilizing periods; obtaining error measurement results of the voltage stabilizing periods corresponding to all the test molds, and judging that the verification result of the concrete impermeability instrument to be tested is unqualified when the number of the error measurement results of the voltage stabilizing periods corresponding to all the test molds is not qualified and is larger than a preset error measurement threshold; or obtaining fluctuation metering results of the voltage stabilizing periods corresponding to all the test molds, and judging that the verification result of the concrete impermeability instrument to be tested is unqualified when the number of the fluctuation metering results of the voltage stabilizing periods corresponding to all the test molds is unqualified and is larger than a preset fluctuation metering threshold value.
According to another aspect of the present invention, there is also provided a metering device for a concrete impermeability apparatus, the metering device comprising: the system comprises at least one electromagnetic valve, pipelines, a collecting device, a standard pressure sensor and a display control processing device, wherein the electromagnetic valve is used for switching the on-off state of the pipeline communicated with the water outlet of a test die of a concrete impermeability instrument to be tested, and the number of the electromagnetic valves is consistent with the number of the test dies; the standard pressure sensor: a standard value for measuring the water outlet pressure value of any one test mould; the collecting device is used for collecting the pressure value of the water outlet of any test die and the pressure value of the standard pressure sensor; the display control processing device is used for controlling and starting an electromagnetic valve of a test mould corresponding pipeline of the concrete impermeability instrument to be tested, and controlling the acquisition device to acquire the water outlet pressure value of the test mould and the pressure value of the standard pressure sensor according to a preset acquisition frequency; the stable pressure sequence is used for determining that the water outlet pressure value of the test die reaches the working pressure, and the stable pressure value of the test die is determined according to the stable pressure sequence; the pressure error delta P Showing the is calculated according to the stable pressure value and the standard pressure value of the standard pressure sensor corresponding to the stable pressure value at the same time; the error measurement method is also used for marking that the error measurement result of the voltage stabilizing period corresponding to the test mode is unqualified when the indication pressure error DeltaP Showing the is larger than a preset indication pressure error threshold value; the display control processing device is also used for setting the acquisition frequency and the indication pressure error threshold.
Wherein, the metering device of the concrete impermeability instrument can also have the following characteristics:
The display control processing device is further used for taking the difference value of the water outlet pressure values of the test molds corresponding to two adjacent moments as a sequence element to generate a difference value pressure sequence; determining a plurality of continuous sequence elements larger than a preset difference threshold value in the difference pressure sequence, and generating a stable pressure sequence from the water outlet pressure value of the test model corresponding to the sequence elements; the first sequence element of the steady-state pressure sequence is noted as the steady-state pressure value.
Wherein, the metering device of the concrete impermeability instrument can also have the following characteristics:
The display control processing device is further configured to record, as a fluctuating pressure value, the maximum absolute value or the minimum absolute value of the water outlet pressure value of the test die after the moment corresponding to the stable pressure value, and calculate an indication pressure fluctuation error Δp Wave-guide according to the fluctuating pressure value and the working pressure; and the device is also used for marking that the fluctuation metering result of the voltage stabilizing period corresponding to the test mode is unqualified when the indication pressure fluctuation error DeltaP Wave-guide is larger than a preset indication pressure fluctuation threshold value.
Wherein, the metering device of the concrete impermeability instrument can also have the following characteristics:
The metering device further comprises: an electromagnetic water heater and an exhaust valve; the electromagnetic water passing device is used for sucking and communicating the pipeline with all test mould water outlets of the concrete impermeability instrument to be tested; the exhaust valve is used for exhausting all the test mold water outlets and corresponding pipelines; the display control processing device is also used for closing the electromagnetic valve of the pipeline corresponding to the exhaust valve and the water outlet of any test die after controlling the opened exhaust valve to exhaust; the display control processing device is also used for setting the exhaust time.
Wherein, the metering device of the concrete impermeability instrument can also have the following characteristics:
The display control processing device is also used for judging whether the pressurizing process of the concrete impermeability instrument to be tested is finished according to the set plurality of pressure stabilizing periods and the working pressure corresponding to the pressure stabilizing periods; the method is also used for obtaining error measurement results of the voltage-stabilizing periods corresponding to all the test molds, and judging that the verification result of the concrete impermeability instrument to be tested is unqualified when the number of the error measurement results of the voltage-stabilizing periods corresponding to all the test molds is unqualified and is larger than a preset error measurement threshold; the method is also used for obtaining fluctuation metering results of the voltage stabilizing periods corresponding to all the test molds, and judging that the verification result of the concrete impermeability instrument to be tested is unqualified when the number of the fluctuation metering results of the voltage stabilizing periods corresponding to all the test molds is unqualified and is larger than a preset fluctuation metering threshold; the display control processing device is also used for setting the indication pressure fluctuation threshold value, the error metering threshold value and the fluctuation metering threshold value.
According to the metering method and device for the concrete impermeability instrument, in the process that the test mould of the concrete impermeability instrument to be tested is pressurized according to the preset pressure stabilizing period and the working pressure corresponding to the pressure stabilizing period, the stable pressure value after the water outlet pressure value of the test mould reaches the set working pressure in the pressure stabilizing period is determined by automatically collecting the water outlet pressure value of the test mould and the pressure value of the standard pressure sensor, the data for verifying the pressure accuracy and the pressure fluctuation of the concrete impermeability instrument are accurately obtained, the verification of the metering result of the pressure stabilizing period corresponding to the test mould is realized, the automatic verification concept is introduced, the human intervention in the measurement process is reduced, the consistency of the measurement process is ensured, the metering result is more accurate, and the working efficiency is higher.
Other characteristic features and advantages of the invention will become apparent from the following description of exemplary embodiments, which is to be read with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention. In the drawings, like reference numerals are used to identify like elements. The drawings, which are included in the description, illustrate some, but not all embodiments of the invention. Other figures can be derived from these figures by one of ordinary skill in the art without undue effort.
FIG. 1 shows a flow chart of a method of metering a concrete permeation resistant engine according to the present invention;
FIG. 2 shows a flow chart of the preparation work of the invention before the acquisition device acquires data;
FIG. 3 is a flow chart illustrating a method of determining a steady pressure value for a test mode from a steady pressure sequence in accordance with the present invention;
FIG. 4 shows another flow chart of a metering method of a concrete permeation resistant engine according to the present invention;
FIG. 5 schematically illustrates the construction of a metering device of a concrete permeation resistant engine according to the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be arbitrarily combined with each other.
According to the invention, the pressure of the test die water outlet of the concrete impermeability instrument to be tested is automatically acquired and transmitted, and the accurate stable pressure value of the stable state of the test die water outlet after the working pressure is reached is further processed and calculated, so that the pressure accuracy and the pressure fluctuation detection of the concrete impermeability instrument are improved, and the state of the concrete impermeability instrument is accurately reflected.
The method and apparatus for metering a concrete permeation resistant engine according to the present invention will be described in detail with reference to the accompanying drawings.
Example 1
FIG. 1 shows a flow chart of one embodiment of a metering method of a concrete permeation resistant engine according to the present invention.
Referring to FIG. 1, the metering method of the concrete impermeability instrument comprises the following steps:
Step 101, controlling to open an electromagnetic valve of a test mould corresponding pipeline of a concrete impermeability instrument to be tested, and collecting a water outlet pressure value of the test mould and a pressure value of a standard pressure sensor according to a preset collecting frequency by an collecting device, wherein the test mould is pressurized according to a preset voltage stabilizing period and a working pressure corresponding to the voltage stabilizing period;
step 102, determining a stable pressure sequence when the water outlet pressure value of the test die reaches the working pressure, and determining the stable pressure value of the test die according to the stable pressure sequence;
Step 103, calculating an indication pressure error DeltaP Showing the corresponding to the test mode according to the stable pressure value and the pressure value of the standard pressure sensor corresponding to the stable pressure value at the same time;
And 104, when the indication pressure error DeltaP Showing the is judged to be larger than a preset indication pressure error threshold, marking that the metering result of the voltage stabilizing period corresponding to the test mode is unqualified.
In the embodiment, in the process that the test molds of the concrete impermeability instrument to be tested are pressurized according to the preset pressure stabilizing period and the working pressure corresponding to the pressure stabilizing period, the collecting device is controlled to automatically collect the water outlet pressure value of one test mold and the pressure value of the standard pressure sensor according to the preset collecting frequency, the stable pressure value after the water outlet pressure value of the test mold reaches the set working pressure in the pressure stabilizing period is determined, the indication pressure error DeltaP Showing the corresponding to the calculated test mold is further calculated, verification of the metering result of the pressure stabilizing period corresponding to the test mold is realized, the metering result is accurate, the working efficiency is high, and meanwhile effective reference data are provided for verifying the concrete impermeability instrument to be tested.
It can be understood that when the indication pressure error Δp Showing the is less than the preset indication pressure error threshold, the error measurement result of the voltage stabilizing period corresponding to the marking test mode is qualified.
In the method, a user can set the indicating pressure error threshold value in advance, and the range of the indicating pressure error threshold value can be set to be between-0.015 MPa and +0.015MPa.
Prior to step 101, a preparation may be made before the acquisition device begins to acquire data, the following steps are performed in detail with reference to figure 2,
Step 201, sucking and communicating the pipeline with water outlets of all test molds of the concrete impermeability instrument to be tested;
Step 202, controlling to open an exhaust valve to exhaust all test mold water outlets and corresponding pipelines according to preset exhaust time, and closing electromagnetic valves of the exhaust valve and the corresponding pipelines of the water outlet of any test mold;
and 203, pressurizing the concrete impermeability instrument to be tested according to the set plurality of voltage stabilizing periods and the working pressure corresponding to the voltage stabilizing periods.
It can be understood that when the number of the unqualified error measurement results of the voltage stabilizing periods corresponding to all the test molds is smaller than the preset measurement threshold, the verification result of the concrete impermeability instrument to be tested is judged to be qualified.
In the step 201, impurities such as grease and wax in the test mold can be cleaned, and the bottom surface of the test mold can be cleaned and wiped clean.
In step 203, the user may set parameters of the concrete impermeability apparatus through the setting device of the concrete impermeability apparatus to be tested, where the parameters include a set pressure level and a voltage stabilizing time, so that the concrete impermeability apparatus to be tested is pressurized according to a set number of voltage stabilizing periods and working pressures corresponding to the voltage stabilizing periods, and the time when the outlet pressure of the test die enters the stable state, that is, the time of the voltage stabilizing period is set to be 30min to be most reasonable.
In the step 102, a stable pressure sequence that the water outlet pressure value of the test mold reaches the working pressure is determined, and the stable pressure value of the test mold is determined according to the stable pressure sequence, and the method specifically performs the steps referring to fig. 3,
Step 301, taking the difference value of the water outlet pressure values of the test molds corresponding to two adjacent moments as a sequence element to generate a difference value pressure sequence;
Step 302, determining a plurality of continuous sequence elements larger than a preset difference threshold value in the difference pressure sequence, and generating a stable pressure sequence from the water outlet pressure value of the test model corresponding to the sequence elements;
In step 303, the first sequence element of the steady pressure sequence is noted as the steady pressure value.
In step 103, the indication pressure error Δp Showing the corresponding to the test mode is the difference between the steady pressure value and the pressure value of the standard pressure sensor corresponding to the steady pressure value
In the above step 302, 3 consecutive sequence elements greater than the preset difference threshold in the difference pressure sequence may be determined, the stable pressure sequence is generated by the water outlet pressure value of the test model corresponding to the sequence elements, and the difference threshold may be set in advance by the user, and may be set to 0.005MPa.
Example two
FIG. 4 shows a flow chart of a method of metering a concrete permeation resistant engine according to a second embodiment.
Referring to fig. 4, the metering method of the concrete impermeability instrument specifically performs the following steps:
step 401, a control pipeline is communicated with water outlets of all test molds of a concrete impermeability instrument to be tested in a suction way;
Step 402, controlling to open an exhaust valve of the verification device to exhaust all test mold water outlets and corresponding pipelines according to preset exhaust time, and closing electromagnetic valves of the exhaust valve and the corresponding pipelines of the water outlet of any test mold;
Step 403, pressurizing the concrete impermeability instrument to be tested according to a plurality of set voltage stabilizing periods and working pressures corresponding to the voltage stabilizing periods;
Step 404, controlling to open an electromagnetic valve of a test mould corresponding pipeline of the concrete impermeability instrument to be tested, and collecting a water outlet pressure value of the test mould and a pressure value of a standard pressure sensor according to a preset collecting frequency by an collecting device, wherein the test mould is pressurized according to a preset voltage stabilizing period and a working pressure corresponding to the voltage stabilizing period;
Step 405, determining a stable pressure sequence when the water outlet pressure value of the test die reaches the working pressure, and determining the stable pressure value of the test die according to the stable pressure sequence;
Step 406, calculating an indication pressure error DeltaP Showing the corresponding to the test mode according to the stable pressure value and the pressure value of the standard pressure sensor corresponding to the stable pressure value at the same time;
Step 407, judging whether the indication pressure error DeltaP Showing the is larger than a preset indication pressure error threshold value;
The determination is greater than, step 408 is performed: marking that the error measurement result of the voltage stabilizing period corresponding to the test mode is unqualified, and executing step 410;
judging that it is smaller than, executing step 409: marking that the error measurement result of the voltage stabilizing period corresponding to the test mode is qualified, and transferring to the next step;
Step 410, marking the maximum absolute value or the minimum absolute value of the water outlet pressure value of the test mould after the moment corresponding to the stable pressure value as a fluctuation pressure value, and calculating an indication pressure fluctuation error DeltaP Wave-guide according to the fluctuation pressure value and the working pressure;
Step 411, determining whether the indication pressure fluctuation error Δp Wave-guide is greater than a preset indication pressure fluctuation threshold;
If the determination is greater than, step 412 is performed: marking that the fluctuation metering result of the voltage stabilizing period corresponding to the test mode is unqualified, and executing step 414;
If the determination is less than, step 413 is executed: marking the fluctuation metering result of the voltage stabilizing period corresponding to the test mode as qualified;
step 414 is performed: judging whether the pressurizing process of the concrete impermeability instrument to be tested is finished;
If it is judged that the process is not completed, the above steps 404 to 414 are circularly performed,
The determination ends, step 415 is performed: judging whether the number of unqualified fluctuation metering results of the voltage stabilizing period corresponding to all test modes is larger than a preset fluctuation metering threshold value;
The determination is greater than, step 416 is performed: the verification result of the concrete impermeability instrument to be tested is unqualified;
If the determination is less than, step 417 is executed: and the verification result of the concrete impermeability instrument to be tested is qualified.
In the above step 410, the indication pressure fluctuation error Δp Wave-guide is the difference between the fluctuation pressure value and the working pressure corresponding to the pressure stabilizing period, where the fluctuation pressure value is the absolute maximum value or the absolute minimum value of the water outlet pressure value of the test mode after the time corresponding to the stable pressure value.
The method may further comprise: judging whether the number of unqualified error measurement results of the voltage stabilizing period corresponding to all test patterns is larger than a preset error measurement threshold value;
judging that the verification result of the concrete impermeability instrument to be tested is unqualified;
judging that the verification result of the concrete impermeability instrument to be tested is qualified.
The user can set the exhaust time, the indication pressure fluctuation threshold value, the fluctuation metering threshold value and the error metering threshold value in advance.
The exhaust time setting range may be at least 5 minutes, the pressure fluctuation threshold setting range may be set to-0.015 MPa to +0.015MPa, the fluctuation metering threshold may be set to 10, and the error metering threshold may be set to 10.
In the embodiment, after the stable pressure value after the pressure value of the water outlet of the test die reaches the set working pressure in the pressure stabilizing period is determined, the indication pressure fluctuation error DeltaP Wave-guide corresponding to the test die is calculated and obtained, and the metering result of the pressure stabilizing period corresponding to the test die is further verified, so that the verification result of the concrete impermeability instrument to be tested can be effectively evaluated.
Example III
Fig. 5 shows a schematic structural view of a metering device of a concrete permeation resistant engine according to a third embodiment.
Referring to fig. 5, the metering device of the concrete impermeability instrument includes: at least one electromagnetic valve 1, a pipeline 2, a collecting device 3, a standard pressure sensor 4 and a display control processing device 5; the electromagnetic valve 1 is used for switching the on-off state of a pipeline 2 communicated with the water outlet of a test mould 9 of the concrete impermeability instrument 8 to be tested, and the number of the electromagnetic valves is consistent with that of the test moulds 9; standard pressure sensor 4: a standard value for measuring the water outlet pressure value of any one test die 9; the acquisition device 3 is used for acquiring the pressure value of the water outlet of any test die 9 and the pressure value of a standard pressure sensor; the display control processing device 5 is used for controlling and starting electromagnetic valves of pipelines corresponding to the test molds 9 of the concrete impermeability instrument to be tested, and controlling the acquisition device 2 to acquire the pressure value of the water outlet of the test molds 9 and the pressure value of the standard pressure sensor according to preset acquisition frequency; the method is also used for determining a stable pressure sequence when the water outlet pressure value of the test die 9 reaches the working pressure, and determining the stable pressure value of the test die 9 according to the stable pressure sequence; the method is also used for calculating an indication pressure error DeltaP Showing the corresponding to the test die 9 according to the stable pressure value and the standard pressure value of the standard pressure sensor corresponding to the stable pressure value at the same time; and the error measurement result of the voltage stabilizing period corresponding to the marking test die 9 is unqualified when the indication pressure error DeltaP Showing the is judged to be larger than the preset indication pressure error threshold.
The display control processing device 5 is also used for setting the acquisition frequency and the indication pressure error threshold value.
The pipelines are mutually communicated to form a communicating pipe structure, the water outlet of any one test die 9 is communicated with a standard pressure sensor through the pipeline 2, the on-off of the pipeline connected with the water outlet of the test die 9 is controlled, the water outlet pressure of any one test die 9 is controlled to be collected, and the standard pressure sensor is communicated with a pressure sensor with the precision grade of one grade.
The user can set the parameters of the concrete impermeability instrument to be tested through the setting device 10 of the concrete impermeability instrument to be tested, wherein the parameters comprise the set pressure level and the pressure stabilizing time, so that the concrete impermeability instrument to be tested is pressurized according to the set pressure stabilizing time periods and the working pressures corresponding to the pressure stabilizing time periods.
The display control processing device 5 is further configured to generate a differential pressure sequence by using a differential value of the water outlet pressure values of the test molds 9 corresponding to two adjacent moments as a sequence element; determining a plurality of continuous sequence elements larger than a preset difference threshold value in the difference pressure sequence, and generating a stable pressure sequence from the water outlet pressure value of the test model 9 corresponding to the sequence elements; the first sequence element of the steady pressure sequence is noted as the steady pressure value.
The display control processing device 5 is further configured to record, as a fluctuating pressure value, the maximum absolute value or the minimum absolute value of the water outlet pressure value of the test mold 9 after the moment corresponding to the stable pressure value, and calculate an indicating value pressure fluctuation error Δp Wave-guide according to the fluctuating pressure value and the working pressure; and the method is also used for marking that the fluctuation metering result of the voltage stabilizing period corresponding to the test die 9 is unqualified when the indication pressure fluctuation error DeltaP Wave-guide is larger than the preset indication pressure fluctuation threshold.
As shown, the metering device of the concrete impermeability instrument further comprises: an electromagnetic water heater 6 and an exhaust valve 7; the electromagnetic flux water heater 6 is used for sucking and communicating the pipeline with the water outlets of all test molds 9 of the concrete impermeability instrument to be tested; the exhaust valve 7 is used for exhausting the water outlets of all the test molds 9 and the corresponding pipelines; the display control processing device 5 is also used for closing the electromagnetic valve of the pipeline corresponding to the exhaust valve and the water outlet of any test die 9 after controlling the opened exhaust valve to exhaust; the display control processing device 5 is also used for setting the exhaust time.
The electromagnetic flux water heater comprises an electromagnetic communicating pipe, when the electromagnetic communicating pipe is electrified, the electromagnetic communicating pipe is communicated with the water outlet of the test die 9 by utilizing the electromagnetic adsorption principle, and the structure inside the concrete impermeability instrument 8 to be tested is not required to be disassembled, so that the aim of not damaging the structure of the device to be tested and completing verification is fulfilled.
The display control processing device 5 is also used for judging whether the pressurizing process of the concrete impermeability instrument to be tested is finished according to the set plurality of pressure stabilizing periods and the working pressure corresponding to the pressure stabilizing periods; the method is also used for obtaining error measurement results of the voltage-stabilizing periods corresponding to all the test molds 9, and judging that the verification result of the concrete impermeability instrument to be tested is unqualified when the number of the unqualified error measurement results of the voltage-stabilizing periods corresponding to all the test molds 9 is larger than a preset error measurement threshold; and the method is also used for obtaining the fluctuation metering results of the corresponding voltage stabilizing periods of all the test molds 9, and judging that the verification result of the concrete impermeability instrument to be tested is unqualified when the number of unqualified fluctuation metering results of the corresponding voltage stabilizing periods of all the test molds 9 is larger than a preset fluctuation metering threshold value.
The display control processing device 5 is also used for setting an indication pressure fluctuation threshold value, an error measurement threshold value and a fluctuation measurement threshold value.
According to the metering method and device for the concrete impermeability instrument, in the process that the test mould of the concrete impermeability instrument to be tested is pressurized according to the preset pressure stabilizing period and the working pressure corresponding to the pressure stabilizing period, the collecting device is controlled to automatically collect the water outlet pressure value of the test mould and the pressure value of the standard pressure sensor according to the preset collecting frequency, and the data for verifying the pressure accuracy and the pressure fluctuation of the concrete impermeability instrument are accurately obtained by determining the stable pressure value after the water outlet pressure value of the test mould reaches the set working pressure in the pressure stabilizing period.
The above description may be implemented alone or in various combinations and these modifications are within the scope of the present invention.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting. Although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. A method of metering a concrete permeation resistance meter, the method comprising:
Step 1, controlling and starting an electromagnetic valve of a test mould corresponding pipeline of a concrete impermeability instrument to be tested, and collecting a water outlet pressure value of the test mould and a pressure value of a standard pressure sensor according to a preset collecting frequency by an collecting device, wherein the test mould is pressurized according to a preset pressure stabilizing period and a working pressure corresponding to the pressure stabilizing period;
Step 2, determining a stable pressure sequence when the water outlet pressure value of the test die reaches the working pressure, and determining the stable pressure value of the test die according to the stable pressure sequence;
Step 3, calculating an indication pressure error DeltaP Showing the corresponding to the test mode according to the stable pressure value and the pressure value of the standard pressure sensor corresponding to the stable pressure value at the same time;
Step 4, when the indication pressure error DeltaP Showing the is judged to be larger than a preset indication pressure error threshold, marking that an error metering result of the voltage stabilizing period corresponding to the test mode is unqualified;
wherein, the step 2 comprises the following steps:
Taking the difference value of the water outlet pressure values of the test molds corresponding to two adjacent moments as a sequence element to generate a difference value pressure sequence;
Determining a plurality of continuous sequence elements larger than a preset difference threshold value in the difference pressure sequence, and generating a stable pressure sequence from the water outlet pressure value of the test model corresponding to the sequence elements;
the first sequence element of the steady-state pressure sequence is noted as the steady-state pressure value.
2. The method of metering a concrete permeation resistance meter according to claim 1, wherein said calculating method further comprises:
Recording the maximum absolute value or the minimum absolute value of the water outlet pressure value of the test mould after the moment corresponding to the stable pressure value as a fluctuation pressure value, and calculating an indication pressure fluctuation error delta P Wave-guide according to the fluctuation pressure value and the working pressure;
And when the indication pressure fluctuation error DeltaP Wave-guide is judged to be larger than a preset indication pressure fluctuation threshold, marking that a fluctuation metering result of the voltage stabilizing period corresponding to the test mode is unqualified.
3. The method of metering a concrete permeation resistant engine according to claim 1, wherein said method of metering further comprises:
the step 1 comprises the following steps: the pipeline is communicated with water outlets of all test molds of the concrete impermeability instrument to be tested in a suction way; controlling to open an exhaust valve to exhaust all test die water outlets and corresponding pipelines according to preset exhaust time, and closing electromagnetic valves of the exhaust valve and the corresponding pipelines of the water outlet of any test die; and pressurizing the concrete impermeability instrument to be tested according to the set plurality of voltage stabilizing time periods and the working pressure corresponding to the voltage stabilizing time periods.
4. A method of metering a concrete permeation resistant engine according to claim 3, wherein said metering method further comprises:
judging whether the pressurizing process of the concrete impermeability instrument to be tested is finished according to a plurality of set pressure stabilizing periods and working pressures corresponding to the pressure stabilizing periods;
Obtaining error measurement results of the voltage stabilizing periods corresponding to all the test molds, and judging that the verification result of the concrete impermeability instrument to be tested is unqualified when the number of the error measurement results of the voltage stabilizing periods corresponding to all the test molds is not qualified and is larger than a preset error measurement threshold;
or obtaining fluctuation metering results of the voltage stabilizing periods corresponding to all the test molds, and judging that the verification result of the concrete impermeability instrument to be tested is unqualified when the number of the fluctuation metering results of the voltage stabilizing periods corresponding to all the test molds is unqualified and is larger than a preset fluctuation metering threshold value.
5. A metering device for a concrete permeation resistance meter, the metering device comprising: at least one electromagnetic valve (1), a pipeline (2), a collecting device (3), a standard pressure sensor (4) and a display control processing device (5),
The electromagnetic valve (1) is used for switching on-off states of pipelines (2) communicated with water outlets of test molds of the concrete impermeability instrument to be tested, and the number of the electromagnetic valves is consistent with that of the test molds;
-said standard pressure sensor (4): a standard value for measuring the water outlet pressure value of any one test mould;
The acquisition device (3) is used for acquiring the pressure value of the water outlet of any one test die and the pressure value of the standard pressure sensor;
the display control processing device (5) is used for controlling and starting an electromagnetic valve of a test mould corresponding pipeline of the concrete impermeability instrument to be tested, and controlling the acquisition device (2) to acquire a water outlet pressure value of the test mould and a pressure value of a standard pressure sensor according to a preset acquisition frequency; the device is also used for determining a stable pressure sequence when the water outlet pressure value of the test die reaches the working pressure, and determining the stable pressure value of the test die according to the stable pressure sequence; the pressure error delta P Showing the is calculated according to the stable pressure value and the standard pressure value of the standard pressure sensor corresponding to the stable pressure value at the same time; the error measurement result of the voltage stabilizing period corresponding to the test mode is marked as unqualified when the indication pressure error DeltaP Showing the is judged to be larger than a preset indication pressure error threshold value;
The display control processing device (5) is also used for setting the acquisition frequency and the indication pressure error threshold value;
The display control processing device (5) is further used for taking the difference value of the water outlet pressure values of the test molds corresponding to two adjacent moments as a sequence element to generate a difference value pressure sequence; determining a plurality of continuous sequence elements larger than a preset difference threshold value in the difference pressure sequence, and generating a stable pressure sequence from the water outlet pressure value of the test model corresponding to the sequence elements; the first sequence element of the steady-state pressure sequence is noted as the steady-state pressure value.
6. A metering device for a concrete permeation resistant engine as recited in claim 5, wherein,
The display control processing device (5) is further configured to record, as a fluctuating pressure value, the maximum absolute value or the minimum absolute value of the water outlet pressure value of the test die after the moment corresponding to the stable pressure value, and calculate an indication pressure fluctuation error Δp Wave-guide according to the fluctuating pressure value and the working pressure; and the device is also used for marking that the fluctuation metering result of the voltage stabilizing period corresponding to the test mode is unqualified when the indication pressure fluctuation error DeltaP Wave-guide is larger than a preset indication pressure fluctuation threshold value.
7. The metering device of a concrete permeation resistant engine according to claim 5, wherein said metering device further comprises: an electromagnetic water flux device (6) and an exhaust valve (7);
the electromagnetic water flux device (6) is used for sucking and communicating the pipeline with all test pattern water outlets of the concrete impermeability instrument to be tested;
the exhaust valve (7) is used for exhausting all the test mold water outlets and corresponding pipelines;
the display control processing device (5) is also used for closing the electromagnetic valve of the pipeline corresponding to the exhaust valve and the water outlet of any test die after controlling the opened exhaust valve to exhaust;
the display control processing device (5) is also used for setting the exhaust time.
8. A metering device for a concrete permeation resistant engine as recited in claim 5, wherein,
The display control processing device (5) is also used for judging whether the pressurizing process of the concrete impermeability instrument to be tested is finished according to the set plurality of pressure stabilizing periods and the working pressure corresponding to the pressure stabilizing periods; the method is also used for obtaining error measurement results of the voltage-stabilizing periods corresponding to all the test molds, and judging that the verification result of the concrete impermeability instrument to be tested is unqualified when the number of the error measurement results of the voltage-stabilizing periods corresponding to all the test molds is unqualified and is larger than a preset error measurement threshold; the method is also used for obtaining fluctuation metering results of the voltage stabilizing periods corresponding to all the test molds, and judging that the verification result of the concrete impermeability instrument to be tested is unqualified when the number of the fluctuation metering results of the voltage stabilizing periods corresponding to all the test molds is unqualified and is larger than a preset fluctuation metering threshold;
The display control processing device (5) is also used for setting the indication pressure fluctuation threshold value, the error metering threshold value and the fluctuation metering threshold value.
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