CN111307111A - Daily evaluation device and method for static level system - Google Patents
Daily evaluation device and method for static level system Download PDFInfo
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- CN111307111A CN111307111A CN202010260619.1A CN202010260619A CN111307111A CN 111307111 A CN111307111 A CN 111307111A CN 202010260619 A CN202010260619 A CN 202010260619A CN 111307111 A CN111307111 A CN 111307111A
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- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
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Abstract
The invention discloses a daily evaluation device and a daily evaluation method of a hydrostatic level system, which comprise at least one group of hydrostatic level systems formed by connecting a reference level and a working level in series; the device also comprises a plurality of sub-containers; the plurality of sub-containers are connected in parallel with the pipeline through sub water inlet valves on the respective top surfaces of the sub-containers and then are communicated with a water supply system; the plurality of sub containers are connected in parallel with the pipeline through sub drain valves on the respective bottom surfaces of the sub containers and then are communicated with the static leveling system through the water separator; the hydrostatic level system is located below the sub-tank and has a fixed height difference from the horizontal plane in which the sub-tank is located. The daily evaluation device of the static leveling system can realize repeated quantitative water filling for many times during daily work of the system so as to meet the requirement of reference measurement and evaluation of the static leveling system. The evaluation device discharges water after each test, and the equal irrigation is realized by the combination of the sub-containers connected with the water supply system and the same process after the secondary test, so that the operation is convenient and fast, the repeated quantification is realized, and the using function and the effect of the device are stronger.
Description
Technical Field
The invention relates to the technical field of static leveling, in particular to a daily detection and evaluation device and method of a multi-pipeline static leveling system.
Background
Hydrostatic level is a precision level measurement system designed to measure the relative settlement of two or more measurement points. The energy leveling system is based on the use principle of the communicating vessel, the liquid level of the system always keeps horizontal static force characteristic under the condition of no static force, the settlement change of each measuring point causes the change of the liquid level elevation of each measuring point in the system, and the liquid level elevation change is sensed by the measuring instrument.
The static leveling system is widely applied to large-scale projects such as nuclear power, dams, bridges and tunnels and civil buildings. According to the engineering use requirements, the leveling system is temporarily used, such as a bridge acceptance load test; the method is also used permanently, such as monitoring the non-uniform settlement whole life of the common raft foundation of the nuclear island containment vessel of the nuclear power station; when in use, the dam is mostly fixed on a dam body, a pier or a supporting frame thereof, and is mostly pre-embedded in concrete for permanent use.
Several basic structures of the static level are shown in attached figures 1 to 3, and the attached figure 1 is a structural diagram of a reference level and consists of a water storage barrel, a floating barrel, a contact rod, a force sensor, a water inlet guide pipe, an exhaust outlet, an observation pipe and a measuring cable. Figure 2 is a work level with force sensor, which is composed of water storage barrel, floating barrel, contact rod, force sensor, water inlet pipe, air outlet and measuring cable. Figure 3 is a working level without force sensor, consisting of a water storage tank, a water intake conduit and an exhaust outlet. According to different use and test precision requirements, the designed static leveling system has a multi-point parallel test system sharing one reference point, as shown in figure 4; there are also groups of independent test systems in series two by two, as shown in figure 5, and there are also hybrid systems of the two, as shown in figure 6. The working level gauge of the test system which is connected in series in a pairwise independent manner as shown in fig. 5 has a structure with a force sensor as shown in fig. 2, and also has a structure without the force sensor as shown in fig. 3. For the working level gauge pre-buried in the concrete, if the force sensor is abnormal, the force sensor can not be taken out for replacement, and a testing system with no force sensor for the working level gauge which is connected in series independently in pairs can be built.
It is obvious that in the above-mentioned several static leveling systems, the testing system without force sensor for working level is strictly required that the liquid in the system is stable and the quantity is constant, and for long-term use, in order to obtain high-precision sedimentation deformation measurement, it is difficult to make the liquid in the testing system constant for a long time, because the normal gasification of the liquid is indispensable. For the system, the design starting point is mainly used for verifying the deformation of the structure in a short-term pressing test, and for the long-term operation state, the structure has no test load, and the settlement deformation state of the structure cannot be measured. Of course, if the system can be supplemented with water, so that the liquid volume in the system is kept unchanged, the long-term sedimentation deformation can be well analyzed and evaluated.
The prior art does not relate to a device for accurately replenishing water to a pipeline or a container of an existing test system. The volume of liquid in the system can be changed by multiple factors such as the gasification of the liquid and the like of the test system along with the prolonging of time, on one hand, the water loss rule can not be obtained, and the water loss amount is unknown; on the other hand, the test system has extremely strict requirements on liquid volume change, and has no related metering instrument and realization way for quantitative or even micro water supplement. Therefore, such a high-precision static leveling system cannot be used in non-experimental daily periods, and scientific data cannot be acquired for the evaluation of structural performance.
The method has the advantages that the problem that a force sensor of a working level gauge of various static leveling systems with working points in actual engineering is abnormal and incapable of reading is solved, so that the function of a measuring system is degraded, structural settlement monitoring in daily period is not judged, and the method is a great problem which troubles the testing field at present.
Before, an attempt to fill water by using instruments such as a high-precision measuring cylinder and a measuring cup is made, experiments show that the operability is complicated, the volume of the liquid measuring instrument in the existing market is limited, the instrument is not suitable for large-scale engineering use, and the accumulated error of manual reading is repeatedly used for many times, so that the requirement cannot be met.
Therefore, how to develop a set of combined-volume precise quantitative irrigation devices and construct a static level daily evaluation system according to the principle of static level is a problem that needs to be solved urgently by the technical staff in the field.
Disclosure of Invention
In view of the above, the present invention provides a daily evaluation device for a static leveling system, which aims to solve the above technical problems.
In order to achieve the purpose, the invention adopts the following technical scheme:
a daily evaluation device of a hydrostatic level system comprises at least one group of hydrostatic level systems formed by connecting a reference level and a working level in series; the device also comprises a plurality of sub-containers; the volumes of the plurality of sub-containers are not equal; the plurality of sub containers are connected in parallel through sub water inlet valves and pipelines on the respective top surfaces of the sub containers and then are communicated with a water supply system; the sub containers are connected in parallel with the pipeline through sub drain valves on the respective bottom surfaces of the sub containers and then are communicated with the static leveling system through a water separator; the hydrostatic level system is positioned below the sub-containers and has a fixed height difference with the horizontal plane in which the sub-containers are positioned.
Through the technical scheme, the graded volumes of the sub-containers are designed according to the irrigation quantity determined by the normal working intermediate range liquid level of each static level system, and the nominal irrigation quantity of each level measurement system can be flexibly realized through the combination of a plurality of sub-containers, namely the nominal irrigation quantity infused by a certain group of static level systems is equal to the sum of the volumes of one or more sub-containers, namely the working water level of a certain group of static level systems can be positioned at the normal working intermediate range through the irrigation quantity of one or more sub-containers, and the problem of accurate and quantitative irrigation can be realized on the premise of ensuring that the sub-containers are filled with water; meanwhile, the height difference value between the sub-container and the static leveling system is constant, so that constant irrigation of the static leveling system can be realized repeatedly, the process is simple and easy to operate, the cost is low, manual operation can be realized, other electric facilities are not needed for driving, and the reliability is high.
Preferably, in the daily evaluation device of the hydrostatic level system, a master water inlet valve which is controlled in a unified manner is installed between the plurality of sub-containers and the water supply system. The water inlet of the pipeline water supply system can be controlled uniformly.
Preferably, in the daily evaluation device of the hydrostatic level system, a master drain valve which is controlled in a unified manner is installed between the plurality of sub-containers and the water segregator. The water discharge of the sub-container is conveniently and uniformly controlled.
Preferably, in the daily evaluation device for a hydrostatic leveling system, an elevation of a horizontal main pipe of a parallel pipe between the sub drain valve and the main drain valve is not lower than an elevation of an exhaust outlet of a leveling instrument of the hydrostatic leveling system; the elevation of the vertical main pipeline of the parallel pipeline between the sub-drainage valve and the main drainage valve covers the elevation of the water storage barrel of the reference level and the working level. Therefore, the liquid level of the static level system can be in the range of the vertical pipeline between the sub drain valves and the main drain valve after the nominal constant water amount is poured into the static level system, and overlarge errors cannot be introduced.
Preferably, in the daily evaluation device of the hydrostatic level system, the top surface of the sub-tank further has an air vent valve. And air is exhausted before water is introduced, so that bubbles are prevented from being generated inside, and static imbalance is avoided.
Preferably, in the daily evaluation device of the hydrostatic level system, the sub-tanks are designed according to at least one of the following rules: vji, wherein: i is 1-4, and j is an integer;
when i is 1, Vj1＝1*10jV; when i is 2, Vj2＝2*10jV; when i is 3, Vj3＝2*10jV; when i is 4, Vj4＝5*10jV; j is an integer, and V is a unit volume;
the combination of a plurality of said sub-containers enables a single said hydrostatic level system Vj1Volume of sigma Vji, and subdivision precision can reach Vj1；
Wherein: at Vj1In the formula, j is a minimum integer; in Σ Vji, i is 1 to 4, and j is an integer.
For example: the volumes of the sub-containers are sequentially designed according to the following rule: 0.1V, 0.2V, 0.5V, 1V, 2V, 5V, 10V, 20V, 50V; wherein: v is a unit volume. The quantitative requirement of filling water of each static level system can be flexibly realized through the volume combination of the sub-containers. The device has wide continuous nominal volume filling amount, and the device provides filling volume subdivision precision of 1 x 10jV (j is the minimum value), the specification and the number of the sub-containers can be optimally selected according to the number and the volume of the static level system to be irrigated in the actual engineering, and the sub-containers are reduced as much as possibleThe number of the containers can conveniently realize accurate quantitative water filling of a given multi-path static level system, sub-container grading is made, and the working efficiency can be greatly improved.
Preferably, in the daily evaluation device of the hydrostatic level system, a master control valve for unified control is installed between the main pipeline of the water separator and the master drain valve; and branch control valves for controlling the reference level and the working level which are connected in series in each group are arranged on branch pipelines of the water separator. The water inlet of the reference level and the water inlet of the working level which are connected in series in each group are convenient to be unified and respectively controlled.
Preferably, in the daily evaluation device of the hydrostatic level system, the main pipe of the water separator is arranged obliquely in the horizontal direction, and the higher end of the main pipe is provided with a release valve, and the lower end of the main pipe is provided with a release valve. Not only can exhaust conveniently, but also can drain conveniently.
The invention also provides an evaluation method of the daily evaluation device of the hydrostatic level system, which specifically comprises the following steps:
s1, designing the volume of the sub-containers, filling water quantity which can reach the middle range of normal work into each group of static leveling systems through the volume combination of the sub-containers for the first time, and performing primary measurement on the reference level to obtain the initial state of the liquid level; before irrigation, the sub-containers, the water separators and the connecting pipelines between the sub-containers are full of liquid without mixing bubbles.
S2, if the working point where the working level is located is settled, under the condition that the liquid amount of the system is not changed, measuring the reference level again to obtain the current state of the liquid level, calculating the settlement △ H of the working point according to the data obtained before and after the reference level, and evaluating the performance of the test structure;
s3, when the situation of the step S1 occurs and the system liquid amount in the step S2 is changed, or after the test is finished, discharging water in the static leveling system through a water discharging valve of the water separator; and the same process is used for filling the same water quantity as that in the step S1 into the static leveling system again through the volume combination of the sub containers, and the test and the analysis are continued.
Through the technical scheme, the invention can realize that the same water quantity before the water is poured after the water is discharged after each test through the daily evaluation device of the static leveling system. The sub-container combination can realize convenient irrigation through a water supply system, realize accurate and equivalent repeated irrigation volume, realize smooth irrigation process and avoid generating bubbles, and the waterway system can realize static measurement. The accurate equivalent is realized by filling the sub-containers with water, and the standards are uniform; no bubble is generated, and no chance is given to injecting external air; in actual engineering, the liquid in the test system is poured before the test in the settlement deformation measurement of the static level gauge, the liquid needs to be drained after the test is finished, and the drying protection is also taken into consideration from the aspect of the durability of the test system, so that the evaluation method disclosed by the invention has stronger functions and effects.
Preferably, in the above evaluation method of the daily evaluation device of the hydrostatic level system, in S2 and S3, △ H is calculated by the following formula:
△H＝(Aa+Ab+Ac)/Aa*△Hb
wherein:
Aa: the inner sectional area of the water storage cylinder of the working level gauge;
Ab: the sectional area of an annulus between a water storage cylinder and a buoy of the reference level gauge;
Ac: the inner sectional area of the vertical pipeline where the main drain valve is located;
△Hb: the liquid level change value of the reference level is directly measured by a force sensor of the reference level;
positive values indicate an increase and negative values indicate a decrease.
Compared with the prior art, the daily evaluation device and method for the static leveling system have the following beneficial effects that:
1. the volume grading of the sub-containers is designed according to the water filling quantity determined by the normal working intermediate range liquid level of each static level system, the nominal water filling quantity of each level measurement system can be flexibly realized by combining a plurality of sub-containers, namely the nominal water filling quantity filled by a certain group of static level systems is equal to the sum of the volumes of one or more sub-containers, namely the working water level of a certain group of static level systems can be in the normal working intermediate range through the water filling quantity of one or more sub-containers, and the problem of accurate and quantitative water filling can be realized on the premise of ensuring that the sub-containers are full of water; meanwhile, the height difference value between the sub-container and the static leveling system is constant, so that constant irrigation of the static leveling system can be repeatedly performed for many times, repeated accurate quantitative irrigation can be realized, the process is simple and easy to operate, the cost is low, manual operation is achieved, other electric facilities are not needed for driving, and the reliability is high.
2. The invention can realize that the filling reaches the same water quantity in the past after the water is discharged after each test through the daily evaluation device of the static force level system, the sub-containers can realize convenient filling through the water supply system, the accurate and equivalent repeated filling volume is realized, the filling process is smooth, no air bubble is generated, and the waterway system can realize static force measurement. The accurate equivalent is realized by filling the sub-containers with water, and the standards are uniform; no bubble is generated, and no chance is given to injecting external air; in actual engineering, the liquid in the test system is poured before the test in the settlement deformation measurement of the static level gauge, the liquid needs to be drained after the test is finished, and the drying protection is also taken into consideration from the aspect of the durability of the test system, so that the evaluation method disclosed by the invention has stronger functions and effects.
3. The invention can flexibly realize the quantitative requirement of irrigation of each static level system through the volume combination of the sub-containers, has wide continuous nominal volume irrigation quantity, and provides the subdivision precision of the irrigation volume by the device to 1 x 10jV (j is the minimum value), the actual engineering can optimize and select the specification and the quantity of the sub-containers according to the number and the volume of pipelines to be irrigated or the working level and the reference level, the quantity of the sub-containers is reduced as much as possible, accurate quantitative irrigation of the established multi-channel containers can be conveniently realized, the sub-containers are well graded, and the working efficiency can be greatly improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic diagram of a prior art reference level;
FIG. 2 is a schematic diagram of a prior art work level with a force sensor;
FIG. 3 is a schematic diagram of a prior art work level without a force sensor;
FIG. 4 is a drawing of a multi-point parallel hydrostatic level testing system sharing a reference point;
FIG. 5 is a schematic diagram of a plurality of independent groups of hydrostatic level testing systems connected in series two by two;
FIG. 6 is a drawing of the hybrid hydrostatic leveling system of FIGS. 4 and 5;
FIG. 7 is a schematic diagram of the structure provided by the present invention;
FIG. 8 is a schematic illustration of a configuration of the present invention after filling of the hydrostatic level system;
fig. 9 is a schematic structural diagram of the water level change of the hydrostatic level system after the working point in fig. 8 is settled according to the present invention.
Wherein:
100-a hydrostatic leveling system;
101-a reference level;
1010-water storage barrel;
1011-keg float;
1012-contact bar;
1013-a force sensor;
1014-a water inlet conduit;
1015-an exhaust outlet;
1016-observation tube;
1017-measuring cable;
102-a working level;
1020-a water storage barrel;
1021-a pontoon;
1022-contact bar;
1023-a force sensor;
1024-a water inlet conduit;
1025-exhaust outlet;
1026 — measuring cable;
103-child container;
104-a water supply system;
105-a water separator;
1050-a master control valve;
1051-a sub-control valve;
1052-air release valve;
1053-a water drain valve;
106-sub water inlet valve;
107-sub drain valve;
108-main water inlet valve;
109-main drain valve;
110-exhaust valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 7, the embodiment of the invention discloses a daily evaluation device of a hydrostatic level system, which comprises at least one group of hydrostatic level systems 100 formed by connecting a reference level 101 and a working level 102 in series; also includes a plurality of sub-containers 103; the volumes of the plurality of sub-containers 103 are different; the plurality of sub-containers 103 are connected in parallel with a pipeline through sub-water inlet valves 106 on the respective top surfaces thereof and then are communicated with a water supply system 104; the plurality of sub containers 103 are connected in parallel with the pipeline through sub drain valves 107 on the respective bottom surfaces thereof and then are communicated with the static leveling system 100 through a water separator 105; the hydrostatic level system 100 is located below the sub-tank 103 and has a fixed height difference from the horizontal plane in which the sub-tank 103 is located.
In order to further optimize the above technical solution, a uniformly controlled main water inlet valve 108 is installed between the plurality of sub-containers 103 and the water supply system 104.
In order to further optimize the above technical solution, a main drain valve 109 is installed between the plurality of sub-containers 103 and the water separator 105 and is controlled in a unified manner.
In order to further optimize the above technical solution, the elevation of the horizontal main pipe of the parallel pipe between the sub drain valve 107 and the main drain valve 109 is not lower than the elevation of the exhaust outlet of the level gauge of the static leveling system 100; the vertical total pipe elevation of the parallel pipe between the sub drain valve 107 and the total drain valve 109 encompasses the water storage tank elevation of the reference level 101 and the work level 102.
In order to further optimize the above technical solution, the top surface of the sub-container 103 is further provided with an exhaust valve 110.
In order to further optimize the above technical solution, the sub-container 103 is designed with at least one of the following rules: vji, wherein: i is 1-4, and j is an integer;
when i is 1, Vj1＝1*10jV; when i is 2, Vj2＝2*10jV; when i is 3, Vj3＝2*10jV; when i is 4, Vj4＝5*10jV; j is an integer, and V is a unit volume;
the combination of a plurality of sub-containers 103 enables a single hydrostatic level system 100Vj1Volume of sigma Vji, and subdivision precision can reach Vj1；
Wherein: at Vj1In the formula, j is a minimum integer; in Σ Vji, i is 1 to 4, and j is an integer.
In order to further optimize the technical scheme, a master control valve 1050 for unified control is installed between the main pipeline of the water separator 105 and the master drain valve 109; branch pipes of the water separator 105 are provided with branch control valves 1051 for controlling the reference level 101 and the working level 102 connected in series.
In order to further optimize the above solution, the main pipe of the water separator 105 is arranged in a horizontal direction with an inclined angle, and the higher end has a release valve 1052 and the lower end has a release valve 1053.
Referring to fig. 8 and 9, the evaluation method of the daily evaluation device of the hydrostatic level system provided by the invention specifically comprises the following steps:
s1, designing the volume of the sub-containers 103, filling water quantity which can reach the middle range of normal work into each group of static leveling systems 100 through the volume combination of the sub-containers 103 for the first time, and performing primary measurement on the reference level to obtain the initial state of the liquid level; before irrigation, the sub-container 103, the water separator 105 and the connecting pipeline between the sub-container and the water separator are filled with liquid, and no air bubbles are mixed.
S2, if the working point where the working level 102 is located is settled, measuring the reference level again under the condition that the liquid amount of the system is not changed to obtain the current state of the liquid level, calculating the settlement △ H of the working point according to the data obtained before and after the reference level 101, and evaluating the performance of the test structure;
s3, when the condition of the step S1 occurs and the system liquid amount in the step S2 is changed or after the test is finished, discharging water in the static leveling system 100 through a water discharge valve 1053 of the water separator 105; the same process is used to refill the hydrostatic leveling system 100 with the same amount of water as in step S1 through the volume combination of the sub-containers 103, and the test and analysis are continued.
At S2, S3, △ H is calculated by the following formula:
△H＝(Aa+Ab+Ac)/Aa*△Hb
wherein:
Aa: the inner cross-sectional area of the water storage cylinder of the working level gauge 102;
Ab: the sectional area of an annulus between a water storage cylinder and a buoy of the reference level 101;
Ac: the inner sectional area of the vertical pipeline where the main drain valve 109 is located;
△Hb: the liquid level change value of the reference level 101 is directly measured by a force sensor of the reference level 101;
positive values indicate an increase and negative values indicate a decrease.
The working process of the invention is as follows:
(1) according to the water filling quantity determined by the liquid level of the intermediate range of normal work of each branch static level system 100, the volume grading of the sub-containers of the water filling device is designed, the nominal specification and the number of the sub-containers are determined, and finally the effective water filling device is designed. If the volume of the static level system 100 for target water filling is 8.3V, which may correspond to 0.1V +0.2V +1V +2V +5V (equal to 8.3V), the total amount of water in the 5 sub-containers 103 is 5, that is, the static level system 100 may be filled with water through the 5 sub-containers 103.
(2) The irrigation device is installed on site and connected to the hydrostatic level system 100 via a water separator 105. The mounting elevation of the sub-tanks is important so that the liquid level after quantitative irrigation is within the normal working range of the hydrostatic level and is also between the vertical pipes between the sub-drain valves 107 and the main drain valve 109.
(3) And filling the sub-container with water, and simultaneously emptying the water filling pipeline and the air in the water separator.
(4) The corresponding hydrostatic level system 100 is filled according to the sub-tank 103 corresponding to the selected nominal capacity.
(5) And carrying out data measurement and comparison analysis on the data of the previous time, calculating the settlement change of the working point and evaluating the safety of the structure.
(6) And sequentially carrying out irrigation, measurement, calculation and analysis on the static leveling systems 100 of other branches.
The device and the method of the invention well solve the problem of the defects of a certain static leveling system in the actual engineering, can be used for the performance evaluation of daily structures and can also be used for a standby measuring scheme for the settlement measurement of the static leveling in the process of pressure tests. The static leveling system has the advantages of creating a precedent of history, comprehensively solving the problem of working effectiveness of the static leveling system under various complex working conditions and long-term use conditions, making up for the mistake of the original system or widening the use function of the original system.
The device is installed in place once, can realize repeated accurate quantitative irrigation, has simple flow, easy operation, low cost, manual operation, no need of driving by other electric facilities and high reliability. The invention expands the use condition of the static leveling system, fills the blank of the field at home and abroad, particularly, the working leveling instrument is not provided with a force sensor, namely an empty tank structure, can save the huge investment cost, and has obvious economic benefit.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A daily evaluation device of a hydrostatic level system comprises at least one group of hydrostatic level systems (100) formed by a reference level (101) and a working level (102) connected in series; characterized in that the device also comprises a plurality of sub-containers (103); the volumes of the sub-containers (103) are different; a plurality of the sub containers (103) are connected in parallel through sub water inlet valves (106) and pipelines on the respective top surfaces thereof and then are communicated with a water supply system (104); the sub containers (103) are connected in parallel with a pipeline through sub drain valves (107) on the respective bottom surfaces of the sub containers and are communicated with the static leveling system (100) through a water separator (105); the hydrostatic level system (100) is located below the sub-tank (103) and has a fixed height difference with a horizontal plane in which the sub-tank (103) is located.
2. A daily evaluation device for a static leveling system according to claim 1 wherein a collective inlet valve (108) is installed between a plurality of the sub-containers (103) and the water supply system (104).
3. A daily evaluation device of a static leveling system according to claim 1, characterized in that a uniformly controlled master drain valve (109) is installed between a plurality of the sub-containers (103) and the water separators (105).
4. A daily evaluation device of a static leveling system according to claim 3, wherein the level of the horizontal main pipe of the parallel pipe between the sub drain valve (107) and the main drain valve (109) is not lower than the level of the exhaust outlet of the level gauge of the static leveling system (100); the sub-drainage valves (107) and the vertical main pipeline elevations of the parallel pipelines between the main drainage valves (109) cover the elevations of the water storage barrels of the reference level (101) and the working level (102).
5. A daily evaluation device for a static leveling system according to any one of claims 1-4 wherein the top surface of the sub-tank (103) is further provided with a vent valve (110).
6. A daily evaluation device for a static leveling system according to claim 1, characterized in that the sub-containers (103) are designed according to at least one of the following rules: vji, wherein: i is 1-4, and j is an integer;
when i is 1, Vj1＝1*10jV; when i is 2, Vj2＝2*10jV; when i is 3, Vj3＝2*10jV; when i is 4, Vj4＝5*10jV; j is an integer, and V is a unit volume;
the combination of a plurality of sub-containers (103) enables a single hydrostatic level system (100) Vj1Volume of sigma Vji, and subdivision precision can reach Vj1；
Wherein: at Vj1In the formula, j is a minimum integer; in Σ Vji, i ═ 1 · to4, j is an integer.
7. A daily evaluation device of a static leveling system according to claim 1, characterized in that a master control valve (1050) is installed between the main pipe of the water separator (105) and the master drain valve (109); branch pipelines of the water separator (105) are provided with branch control valves (1051) for controlling the reference level (101) and the working level (102) which are connected in series in each group.
8. A daily evaluation device of a static leveling system according to claim 1, characterized in that the main pipe of the water separator (105) is arranged inclined in the horizontal direction, and the higher end is provided with a release valve (1052) and the lower end is provided with a release valve (1053).
9. A method of evaluating a daily rating device for a static leveling system as defined in any one of claims 1 to 8, comprising the steps of:
s1, designing the volume of the sub-containers (103), filling water quantity which can reach the middle range of normal work into each group of static leveling systems (100) through the volume combination of the sub-containers (103) for the first time, and performing primary measurement on the reference level to obtain the initial state of the liquid level; before water is poured, the sub-container (103), the water separator (105) and the connecting pipeline between the sub-container and the water separator are full of liquid, and no air bubbles are mixed.
S2, if the working point where the working level gauge (102) is located is settled, measuring the reference level gauge again under the condition that the liquid level of the system is not changed to obtain the current state of the liquid level, calculating the settlement △ H of the working point according to data obtained before and after the reference level gauge (101), and evaluating the performance of the test structure;
s3, when the condition of the step S1 occurs and the system liquid amount in the step S2 is changed or after the test is finished, discharging water in the static leveling system (100) through a water discharging valve (1053) of the water separator (105); and filling the same water quantity as that in the step S1 into the static leveling system (100) through the volume combination of the sub containers (103) by using the same process, and continuing the test and analysis.
10. An evaluation method of a daily evaluation device of a static level system according to claim 1, wherein in S2, S3, △ H is calculated by the following formula:
△H＝(Aa+Ab+Ac)/Aa*△Hb
wherein:
Aa: the inner sectional area of a water storage cylinder of the working level (102);
Ab: the cross section of an annulus between a water storage cylinder and a buoy of the reference level (101);
Ac: the inner sectional area of the vertical pipeline where the main drain valve (109) is located;
△Hb: the liquid level change value of the reference level (101) is directly measured by a force sensor of the reference level (101);
positive values indicate an increase and negative values indicate a decrease.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112577525A (en) * | 2020-12-24 | 2021-03-30 | 中广核核电运营有限公司 | Method, device and system for detecting availability of level box of nuclear power station |
| CN112815912A (en) * | 2020-12-31 | 2021-05-18 | 中冶建筑研究总院有限公司 | Device and method for detecting vertical displacement of bridge |
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2020
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112577525A (en) * | 2020-12-24 | 2021-03-30 | 中广核核电运营有限公司 | Method, device and system for detecting availability of level box of nuclear power station |
| CN112577525B (en) * | 2020-12-24 | 2023-07-14 | 中广核核电运营有限公司 | Nuclear power station level box availability detection method, device and system |
| CN112815912A (en) * | 2020-12-31 | 2021-05-18 | 中冶建筑研究总院有限公司 | Device and method for detecting vertical displacement of bridge |
| CN112815912B (en) * | 2020-12-31 | 2022-04-29 | 中冶建筑研究总院有限公司 | Device and method for detecting vertical displacement of bridge |
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