CN106989801B - Two-way self-circulation type liquid level meter calibrating device - Google Patents
Two-way self-circulation type liquid level meter calibrating device Download PDFInfo
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- CN106989801B CN106989801B CN201710243692.6A CN201710243692A CN106989801B CN 106989801 B CN106989801 B CN 106989801B CN 201710243692 A CN201710243692 A CN 201710243692A CN 106989801 B CN106989801 B CN 106989801B
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- liquid level
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- level meter
- sub tank
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
- G01F25/20—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of apparatus for measuring liquid level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
The invention discloses a two-way self-circulation type liquid level meter calibrating device, which comprises a main tank body and a sub tank body, wherein drain ports of the main tank body and the sub tank body are respectively connected with an emptying pipe with a valve, the inside of the main tank body is communicated with the inside of the sub tank body through a pipeline control assembly, and the pipeline control assembly can convey detection liquid in the main tank body into the sub tank body or convey detection liquid in the sub tank body into the main tank body; the top of the mother tank body is provided with a mounting frame for mounting a top-loading type liquid level meter, a position adjusting mechanism for adjusting the upper and lower positions of the mounting frame is arranged between the mounting frame and the mother tank body, the outer side of the mother tank body is vertically provided with a transparent glass tube communicated with the inner side of the mother tank body and a mounting tube with a valve, the outer side of the transparent glass tube is provided with a scale for reading the liquid level in the transparent glass tube, and the mouth of the mounting tube is provided with an interface flange for mounting a side-loading type liquid level meter. The invention has the advantages of low water consumption, simple and convenient operation and wide application range.
Description
Technical Field
The invention relates to the field of metering instruments, in particular to a bidirectional self-circulation type liquid level meter calibrating device.
Background
The liquid level meter is a measuring instrument used for indicating and controlling the liquid level in an industrial process measuring and controlling system, and has very wide application in the fields of petroleum, chemical industry, medicine, metallurgy, electric power and the like. The liquid level meter can be divided into a top-loading liquid level meter and a side-loading liquid level meter according to different actual installation positions, wherein the top-loading liquid level meter comprises a throw-in liquid level meter, an ultrasonic liquid level meter, a radar liquid level meter, a float type liquid level meter and the like, and the side-loading liquid level meter comprises a magnetic flap liquid level meter, a differential pressure type liquid level meter and the like. As an important metering device, the metering accuracy of the liquid level meter is directly related to various economic benefit indexes such as business settlement, cost accounting, energy conservation and the like of enterprises, and is also directly related to the economic benefit of external trade and national metering reputation of China. The defects of the currently used liquid level meter verification device are that: the water consumption is large, the operation is complex, the working efficiency is low, only a single type of liquid level meter can be detected, and the method is not suitable for detecting all types of liquid level meters.
Disclosure of Invention
The invention aims to provide a bidirectional self-circulation type liquid level meter calibrating device which is low in water consumption, simple and convenient to operate and wide in application range.
In order to achieve the above purpose, the invention adopts the following technical scheme: the two-way self-circulation type liquid level meter calibrating device comprises a main tank body and a sub tank body, wherein the top of the main tank body and the bottom of the main tank body are respectively provided with an opening, the opening of the bottom of the main tank body is respectively connected with an emptying pipe with a valve, the inside of the main tank body is communicated with the inside of the sub tank body through a pipeline control assembly, and the pipeline control assembly can convey detection liquid in the main tank body into the sub tank body or convey detection liquid in the sub tank body into the main tank body; the top of the mother tank body is provided with a mounting frame for mounting a top-loading type liquid level meter, a first position adjusting mechanism for adjusting the upper and lower positions of the mounting frame is arranged between the mounting frame and the mother tank body, a transparent glass tube communicated with the inside of the mounting frame is vertically arranged on the outer side of the mother tank body, a scale for reading the liquid level in the transparent glass tube is arranged on the outer side of the transparent glass tube, a mounting tube communicated with the inside of the mother tank body and provided with a valve is also arranged on the outer side of the mother tank body, and a lower interface flange for mounting a side-loading type liquid level meter is arranged at the mouth of the mounting tube.
Further, the aforementioned bi-directional self-circulating level gauge calibration apparatus, wherein: the pipeline control assembly has the structure that: the water inlet of the main tank body is communicated with the water inlet end of the water pump, one end of the water inlet pipe of the sub tank body is communicated with the water outlet end of the water pump, and the other end of the water inlet pipe of the sub tank body is communicated with the water inlet of the upper part of the sub tank body; one end of the sub-tank water outlet pipe is communicated with a water outlet at the bottom of the sub-tank, the other end of the sub-tank water outlet pipe is communicated with the water inlet end of the water pump, one end of the main tank water inlet pipe is communicated with the water outlet end of the water pump, and the other end of the main tank water inlet pipe is communicated with a water inlet at the upper part of the main tank.
Further, the aforementioned bi-directional self-circulating level gauge calibration apparatus, wherein: the first position adjusting mechanism has the structure that: a plurality of internal thread seats are arranged on the outer side wall of the upper portion of the mother tank body along the circumferential direction, a screw rod is threaded in each internal thread seat respectively, the upper ends of all screw rods are connected with the mounting frame, the screw rods can axially and freely rotate after being connected with the mounting frame, a chain wheel is sleeved on each screw rod respectively, the chain is wound on all the chain wheels, an adjusting hand wheel is arranged at the top of one screw rod, and the adjusting hand wheel can be rotated forward or reversely, so that all screw rods can be moved upwards or downwards along the corresponding internal thread seats synchronously, and the mounting frame for mounting the top-loading type liquid level meter can be driven upwards or downwards synchronously.
Further, the aforementioned bi-directional self-circulating level gauge calibration apparatus, wherein: the installation rod is further vertically arranged on the outer side wall of the mother tank body above the lower interface flange, a sliding sleeve is slidably arranged on the installation rod, the sliding sleeve is fixed on the installation rod through a jacking bolt, and an upper interface flange for installing the side-mounted liquid level meter is fixed on the sliding sleeve.
Further, the aforementioned bi-directional self-circulating level gauge calibration apparatus, wherein: the automatic control device comprises a main tank body water outlet pipe, a main tank body water inlet pipe, a sub tank body water outlet pipe and a sub tank body water inlet pipe, wherein electric control valves are respectively arranged on the main tank body water outlet pipe, the main tank body water inlet pipe, the sub tank body water outlet pipe and the sub tank body water inlet pipe, a first float type liquid level meter used for detecting the liquid level in the main tank body is arranged in the main tank body, and the first float type liquid level meter, a water pump and all the electric control valves are electrically connected with a controller.
Further, the aforementioned bi-directional self-circulating level gauge calibration apparatus, wherein: the upper part of the mother tank body is provided with a water supplementing hole which is communicated with a water source through a water supplementing pipe with a valve.
Further, the aforementioned bi-directional self-circulating level gauge calibration apparatus, wherein: the bottom of the mother tank body is provided with a liquid level auxiliary regulating hole which is communicated with a liquid level auxiliary regulating pipe with a valve.
Further, the aforementioned bi-directional self-circulating level gauge calibration apparatus, wherein: the top of the sub tank body is provided with a mounting frame for mounting a top-mounted liquid level meter, a second position adjusting mechanism for adjusting the upper and lower positions of the mounting frame is arranged between the mounting frame and the sub tank body, a transparent glass tube communicated with the inside of the mounting frame is vertically arranged at the outer side of the sub tank body, a scale for reading the liquid level in the transparent glass tube is arranged at the outer side of the transparent glass tube, a mounting tube with a valve communicated with the inside of the sub tank body is also arranged at the outer side of the sub tank body, a lower interface flange for mounting a side-mounted liquid level meter is arranged at the pipe orifice of the mounting tube, a mounting rod is further vertically arranged on the outer side wall of the sub tank body above the lower interface flange, a sliding sleeve is slidably arranged on the mounting rod, the sliding sleeve is fixed on the mounting rod through a jacking bolt, and an upper interface flange for mounting the side-mounted liquid level meter is fixed on the sliding sleeve; the secondary tank body is also provided with a second float type liquid level meter for detecting the liquid level in the secondary tank body, and the second float type liquid level meter, the water pump and all the electric control valves are electrically connected with the controller.
Further, the aforementioned bi-directional self-circulating level gauge calibration apparatus, wherein: the structure of the second position adjusting mechanism is as follows: a plurality of internal thread seats are arranged on the outer side wall of the upper portion of the sub tank body along the circumferential direction, a screw rod is threaded in each internal thread seat, the upper ends of all screw rods are connected with the mounting frame, the screw rods can axially and freely rotate after being connected with the mounting frame, a chain wheel is sleeved on each screw rod, the chain is wound on all the chain wheels, an adjusting hand wheel is arranged at the top of one screw rod, and the adjusting hand wheel can be rotated forward or reversely, so that all screw rods can be moved upwards or downwards along the corresponding internal thread seats synchronously, and the mounting frame for mounting the top-loading type liquid level meter can be driven upwards or downwards synchronously.
Further, the aforementioned bi-directional self-circulating level gauge calibration apparatus, wherein: bottom angle adjusting bolts for adjusting the horizontal positions of the tank bodies are arranged at the bottoms of the main tank body and the sub tank body, and horizontal bubbles are horizontally arranged on the upper parts of the main tank body and the sub tank body.
Through implementation of the technical scheme, the invention has the beneficial effects that: (1) All kinds of liquid level meters can be detected, and the application range is wide; (2) The water consumption is greatly reduced and the use cost is reduced by the circulation of the detection liquid between the main tank body and the sub tank body; (3) The automatic control device has the advantages of simple structure, quick and convenient operation, automatic and accurate control, capability of simultaneously calibrating a plurality of liquid level meters, suitability for batch operation, high working efficiency and popularization and application prospect; (4) The top-mounted liquid level meters such as the radar liquid level meter and the ultrasonic liquid level meter are accurately adjusted in the vertical position, so that the existence of a measurement blind area in the verification measurement process of the top-mounted liquid level meters such as the radar liquid level meter and the ultrasonic liquid level meter is effectively avoided.
Drawings
Fig. 1 is a schematic structural diagram of a bidirectional self-circulation type liquid level meter calibrating device according to the present invention.
Detailed Description
The invention will be further described with reference to the drawings and the specific examples.
As shown in fig. 1, the calibrating device for the bidirectional self-circulation type liquid level meter comprises a main tank body 1 and a sub tank body 2, wherein the top of the main tank body 1 is provided with openings, the bottom of the main tank body is provided with water outlets, a first emptying pipe 3 with a valve 31 is connected to the water outlets of the main tank body 1, a second emptying pipe 4 with a valve 41 is respectively connected to the water outlets of the sub tank body 2, the inside of the main tank body 1 is communicated with the inside of the sub tank body 2 through a pipeline control assembly, and the pipeline control assembly can convey detection liquid in the main tank body 1 into the sub tank body 2 or convey detection liquid in the sub tank body 2 into the main tank body 1; a mounting frame 5 for mounting a top-loading type liquid level meter is arranged at the top of the mother tank body 1, a position adjusting mechanism for adjusting the upper and lower positions of the mounting frame 5 is arranged between the mounting frame 5 and the mother tank body 1, a transparent glass tube 6 communicated with the inside of the mother tank body 1 is vertically arranged at the outer side of the mother tank body 1, a scale 7 for reading the liquid level in the transparent glass tube 6 is arranged at the outer side of the transparent glass tube 6, a mounting tube 8 with a valve 81 communicated with the inside of the mother tank body 1 is also arranged at the outer side of the mother tank body 1, and a lower interface flange 9 for mounting a side-loading type liquid level meter is arranged at the pipe orifice of the mounting tube 8; in this embodiment, the pipeline control assembly has the following structure: the water inlet and outlet device comprises a main tank water outlet pipe 10 with a valve 101, a main tank water inlet pipe 11 with a valve 111, a sub tank water outlet pipe 12 with a valve 121, a sub tank water inlet pipe 13 with a valve 131 and a water pump 14, wherein one end of the main tank water outlet pipe 10 is communicated with a water outlet at the bottom of the main tank 1, the other end of the main tank water outlet pipe 10 is communicated with a water inlet end of the water pump 14, one end of the sub tank water inlet pipe 13 is communicated with a water outlet end of the water pump 14, and the other end of the sub tank water inlet pipe 13 is communicated with a water inlet at the upper part of the sub tank 2; one end of the sub-tank water outlet pipe 12 is communicated with a water outlet at the bottom of the sub-tank 1, the other end of the sub-tank water outlet pipe 12 is communicated with a water inlet end of the water pump 14, one end of the main tank water inlet pipe 11 is communicated with a water outlet end of the water pump 14, and the other end of the main tank water inlet pipe 11 is communicated with a water inlet at the upper part of the main tank 1; in this embodiment, the structure of the position adjusting mechanism is as follows: a plurality of internal thread seats 15 are uniformly arranged on the outer side wall of the upper part of the mother tank body 1 along the circumferential direction, a screw rod 16 is respectively threaded in each internal thread seat 15, the upper ends of all screw rods 16 are connected with the mounting frame 5 and can axially and freely rotate after the screw rods 16 are connected with the mounting frame 5, a chain wheel 17 is respectively sleeved on each screw rod 16, a chain 18 is wound on all the chain wheels 17, an adjusting hand wheel 19 is arranged at the top of one screw rod 16, and the adjusting hand wheel 19 is positively rotated or reversely rotated, so that all screw rods 16 can synchronously move upwards or downwards along the corresponding internal thread seat 15, and the mounting frame 5 for mounting the top-mounted type liquid level meter is synchronously driven to move upwards or downwards. In the embodiment, an installation rod 20 is vertically arranged on the outer side wall of the mother tank body 1 above the lower interface flange 9, a sliding sleeve 21 is slidably arranged on the installation rod 20, the sliding sleeve 21 is fixed on the installation rod 20 through a jacking bolt 22, an upper interface flange 23 for installing a side-installed liquid level meter is fixed on the sliding sleeve 21, during actual installation, the lower end of the side-installed liquid level meter is installed on the lower interface flange 9, and the upper end of the side-installed liquid level meter is installed on the upper interface flange 23, so that the side-installed liquid level meter is stably installed on the outer side of the mother tank body 1, and the lower flange interface 9 and the upper flange interface 23 can be exchanged according to actual needs, so that universal installation of the side-installed liquid level meter with various diameters is realized; in this embodiment, the electric control valve 102 is disposed on the female tank outlet pipe 10, the electric control valve 112 is disposed on the female tank inlet pipe 11, the electric control valve 122 is disposed on the sub-tank outlet pipe 12, the electric control valve 132 is disposed on the sub-tank inlet pipe 13, the first float type liquid level meter 24 for detecting the liquid level in the female tank 1 is disposed in the female tank 1, and the first float type liquid level meter 24, the water pump 14, the electric control valve 102, the electric control valve 112, the electric control valve 122 and the electric control valve 132 are electrically connected with the controller 25, so that the upper limit and the lower limit of the liquid level in the female tank can be monitored in real time, the detection liquid in the female tank 1 is conveyed into the sub-tank 2, or the detection liquid in the sub-tank 2 is conveyed into the female tank 1 to ensure that the detection liquid in the female tank 1 is always at a safe water level, and the water level of the detection liquid in the female tank 1 can be automatically adjusted to a set water level, so that the operation is very convenient; in the embodiment, the upper part of the mother tank 1 is provided with a water supplementing hole, and the water supplementing hole is communicated with a water source through a water supplementing pipe 26 with a valve 261, so that the water level in the mother tank 1 can be better adjusted; in the embodiment, a liquid level auxiliary regulating hole is formed in the bottom of the mother tank 1, and the liquid level auxiliary regulating hole is communicated with a liquid level auxiliary regulating pipe 27 with a valve 271, so that the water level in the mother tank 1 can be better regulated;
in the embodiment, a mounting frame 51 for mounting a top-mounted liquid level meter is arranged at the top of a sub tank 2, a second position adjusting mechanism for adjusting the upper position and the lower position of the mounting frame 51 is arranged between the mounting frame 51 and the sub tank 2, a transparent glass tube 61 communicated with the inside of the sub tank 2 is vertically arranged at the outer side of the sub tank 2, a scale 71 for reading the liquid level in the transparent glass tube 61 is arranged at the outer side of the transparent glass tube 6, a mounting pipe 83 with a valve 82 communicated with the inside of the sub tank 2 is also arranged at the outer side of the sub tank 2, a lower interface flange 91 for mounting a side-mounted liquid level meter is arranged at the pipe orifice of the mounting pipe 83, a mounting rod 201 is also vertically arranged on the outer side wall of the sub tank 2 above the lower interface flange 91, a sliding sleeve 211 is arranged on the mounting rod 201, the sliding sleeve 211 is fixed on the mounting rod 201 through a pressing bolt 221, an upper interface flange 231 for mounting the side-mounted liquid level meter is also arranged in the sub tank 2, a second float type liquid level meter 241 for detecting the liquid level in the sub tank 2, and a second float type liquid level meter 241, an electric control valve 14, an electric control valve 122 and an electric control valve 122 are connected with the liquid level meter are arranged at the same time, and the electric control valve is connected with the main tank 122 and the main tank is detected, and the electric control valve is detected, and the efficiency is improved; in this embodiment, the second position adjusting mechanism has a structure as follows: a plurality of internal thread seats 151 are uniformly arranged on the outer side wall of the upper part of the sub tank body 1 along the circumferential direction, a screw rod 161 is respectively threaded in each internal thread seat 151, the upper ends of all screw rods 161 are connected with a mounting frame 51 and can axially and freely rotate after the screw rods 161 are connected with the mounting frame 51, a chain wheel 171 is respectively sleeved on each screw rod 161, a chain 181 is wound on all the chain wheels 171, an adjusting hand wheel 191 is arranged at the top of one screw rod 161, and the adjusting hand wheel 191 is positively rotated or reversely rotated, so that all screw rods 161 can synchronously move up or down along the corresponding internal thread seat 151, and the mounting frame 51 for mounting the top-mounted type liquid level meter is synchronously driven to move up or down. In the embodiment, bottom angle adjusting bolts 28 for adjusting the horizontal positions of the tank bodies are arranged at the bottoms of the main tank body 1 and the sub tank body 2, horizontal bubbles are horizontally arranged on the main tank body 1 and the sub tank body 2, and the horizontal positions of the main tank body and the sub tank body can be ensured through the matched adjustment of the bottom angle adjusting bolts and the horizontal bubbles;
the working principle of the invention is as follows:
the method comprises the steps of detecting a top-loading type liquid level meter, firstly installing the top-loading type liquid level meter on an installation frame 5 of a main tank body 1 and an installation frame 51 of a sub tank body 2, and then adjusting the upper and lower positions of the installation frame 5 and the installation frame 51 to enable the top-loading type liquid level meter on the installation frame 5 and the top-loading type liquid level meter on the installation frame 51 to move up and down to a position capable of overcoming a self detection blind area; then, opening a valve 101, a valve 111, a valve 121 and a valve 131, then, adjusting a top-loading type liquid level meter zero position on a mounting frame 5 and a top-loading type liquid level meter zero position on the mounting frame 51, recording the liquid level of a mother tank 1 displayed in a transparent glass tube 6 when the top-loading type liquid level meter zero position on the mounting frame 5 and the liquid level of a sub tank 2 displayed in the transparent glass tube 61 when the top-loading type liquid level meter zero position on the mounting frame 51, and then conveying detection liquid in the sub tank 2 into the mother tank 1 through a controller 25, so that the liquid level in the mother tank 1 gradually rises to each detection point indicated by the top-loading type liquid level meter on the mounting frame 5 until the upper limit is reached, and respectively reading the liquid level of the mother tank 1 corresponding to each detection point indicated by the top-loading type liquid level meter on the mounting frame 5 in the upper stroke; while the liquid level in the main tank 1 gradually rises to each detection point indicated by the top-mounted liquid level meter on the mounting frame 5, the liquid level in the sub tank 2 just gradually drops to each detection point indicated by the top-mounted liquid level meter on the mounting frame 51 until reaching the lower limit, and the liquid level of the sub tank 2 corresponding to each detection point indicated by the top-mounted liquid level meter on the mounting frame 51 in the lower stroke needs to be read respectively;
then, the detection liquid in the mother tank 1 is conveyed into the sub tank 2 through the controller 25, so that the liquid level in the mother tank 1 gradually drops to each detection point indicated by the top-mounted liquid level meter on the mounting frame 5 until reaching the lower limit, and the liquid level of the mother tank 1 corresponding to each detection point indicated by the top-mounted liquid level meter on the mounting frame 5 in the lower stroke is required to be read respectively; when the liquid level in the main tank 1 gradually drops to each detection point indicated by the top-loading type liquid level meter on the mounting frame 5, the liquid level in the sub tank 2 just gradually rises to each detection point indicated by the top-loading type liquid level meter on the mounting frame 51 until reaching the lower limit, and the liquid level of the sub tank 2 corresponding to each detection point indicated by the top-loading type liquid level meter on the mounting frame 51 in the upper stroke needs to be read respectively;
calculating the indication errors of the top-loading type liquid level meters, and judging whether the detected top-loading type liquid level meters are qualified or not according to the calculated indication errors;
the method comprises the steps of firstly closing a valve 81, then installing the lower end of a side-mounted liquid level meter on a lower interface flange 9 on a mother tank body 1, then unscrewing a jack bolt 22, adjusting the position of an upper interface flange 23 by moving a sliding sleeve 21 until the upper interface flange 23 moves to a position matched with the upper end of the side-mounted liquid level meter to be detected, screwing the jack bolt 22 again, and then installing the upper end of the side-mounted liquid level meter on the upper interface flange 23 on the mother tank body 1; then the lower end of the other side-mounted liquid level meter is mounted on the lower interface flange 91 on the sub-tank 2, then the jack bolts 221 are unscrewed, the position of the upper interface flange 231 is adjusted by moving the sliding sleeve 211 until the upper interface flange 231 moves to a position matched with the upper end of the side-mounted liquid level meter to be calibrated, then the jack bolts 221 are screwed, then the upper end of the side-mounted liquid level meter is mounted on the upper interface flange 231 on the sub-tank 2, then the valve 81 is opened, the valve 111, the valve 121 and the valve 131 are simultaneously opened, then the zero position of the side-mounted liquid level meter on the lower interface flange 91 is adjusted, the liquid level of the mother tank 1 displayed in the transparent glass tube 6 when the side-mounted liquid level meter on the interface flange 9 is zero position and the liquid level of the sub-tank 2 displayed in the glass tube 61 when the side-mounted liquid level meter on the lower interface flange 91 is transparent are recorded, then the detection liquid in the sub-tank 2 is conveyed into the upper interface flange 231 through the controller 25, the detection liquid in the sub-tank 1 is enabled to be gradually lifted until the liquid level in the corresponding to the upper flange 9 of the detected liquid level meter on the upper interface flange is gradually detected, and the liquid level in the upper interface flange is gradually indicated by the corresponding to the upper flange 9; while the liquid level in the main tank 1 gradually rises to each detection point indicated by the side-mounted liquid level meter on the lower interface flange 9, the liquid level in the sub tank 2 just gradually drops to each detection point indicated by the side-mounted liquid level meter on the lower interface flange 91 until reaching the lower limit, and the liquid level of the sub tank 2 corresponding to each detection point indicated by the side-mounted liquid level meter on the lower interface flange 91 in the lower stroke needs to be read respectively;
then, the detection liquid in the mother tank 1 is conveyed into the sub tank 2 through the controller 25, so that the liquid level in the mother tank 1 gradually drops to each detection point indicated by the side-mounted liquid level meter on the lower interface flange 9 until reaching the lower limit, and the liquid level of the mother tank 1 corresponding to each detection point indicated by the side-mounted liquid level meter on the lower interface flange 9 in the lower stroke is required to be read respectively; while the liquid level in the mother tank 1 gradually drops to each detection point indicated by the side-mounted liquid level meter on the lower interface flange 9, the liquid level in the sub tank 2 just gradually rises to each detection point indicated by the side-mounted liquid level meter on the lower interface flange 91 until reaching the lower limit, and the liquid level of the sub tank 2 corresponding to each detection point indicated by the side-mounted liquid level meter on the lower interface flange 91 in the upper stroke needs to be read respectively;
calculating the indication errors of the side-mounted liquid level meters, and judging whether the detected side-mounted liquid level meters are qualified or not according to the calculated indication errors;
the invention has the advantages that: (1) All kinds of liquid level meters can be detected, and the application range is wide; (2) The water consumption is greatly reduced and the use cost is reduced by the circulation of the detection liquid between the main tank body and the sub tank body; (3) The automatic control device has the advantages of simple structure, quick and convenient operation, automatic and accurate control, capability of simultaneously calibrating a plurality of liquid level meters, suitability for batch operation, high working efficiency and popularization and application prospect; (4) The top-mounted liquid level meters such as the radar liquid level meter and the ultrasonic liquid level meter are accurately adjusted in the vertical position, so that the existence of a measurement blind area in the verification measurement process of the top-mounted liquid level meters such as the radar liquid level meter and the ultrasonic liquid level meter is effectively avoided.
Claims (8)
1. Two-way self-loopa formula level gauge calibrating installation, its characterized in that: the device comprises a main tank body and a sub tank body, wherein the top of the main tank body is provided with an opening, the bottom of the main tank body is provided with a water outlet, the water outlets of the main tank body and the sub tank body are respectively connected with an emptying pipe with a valve, the inside of the main tank body and the inside of the sub tank body are communicated through a pipeline control assembly, and the pipeline control assembly can convey detection liquid in the main tank body into the sub tank body or convey detection liquid in the sub tank body into the main tank body; the top of the mother tank body is provided with a mounting frame for mounting a top-mounted liquid level meter, a first position adjusting mechanism for adjusting the upper and lower positions of the mounting frame is arranged between the mounting frame and the mother tank body, a transparent glass tube communicated with the inside of the mother tank body is vertically arranged at the outer side of the mother tank body, a scale for reading the liquid level in the transparent glass tube is arranged at the outer side of the transparent glass tube, a mounting tube with a valve communicated with the inside of the mother tank body is also arranged at the outer side of the mother tank body, and a lower interface flange for mounting a side-mounted liquid level meter is arranged at the mouth of the mounting tube; the pipeline control assembly has the structure that: the water inlet of the main tank body is communicated with the water inlet end of the water pump, one end of the water inlet pipe of the sub tank body is communicated with the water outlet end of the water pump, and the other end of the water inlet pipe of the sub tank body is communicated with the water inlet of the upper part of the sub tank body; one end of the secondary tank water outlet pipe is communicated with a water outlet at the bottom of the secondary tank, the other end of the secondary tank water outlet pipe is communicated with a water inlet end of the water pump, one end of the primary tank water inlet pipe is communicated with a water outlet end of the water pump, and the other end of the primary tank water inlet pipe is communicated with a water inlet at the upper part of the primary tank; the first position adjusting mechanism has the structure that: a plurality of internal thread seats are arranged on the outer side wall of the upper portion of the mother tank body along the circumferential direction, a screw rod is threaded in each internal thread seat respectively, the upper ends of all screw rods are connected with the mounting frame, the screw rods can axially and freely rotate after being connected with the mounting frame, a chain wheel is sleeved on each screw rod respectively, the chain is wound on all the chain wheels, an adjusting hand wheel is arranged at the top of one screw rod, and the adjusting hand wheel can be rotated forward or reversely, so that all screw rods can be moved upwards or downwards along the corresponding internal thread seats synchronously, and the mounting frame for mounting the top-loading type liquid level meter can be driven upwards or downwards synchronously.
2. The bi-directional self-circulating level gauge calibration apparatus of claim 1, wherein: the installation rod is further vertically arranged on the outer side wall of the mother tank body above the lower interface flange, a sliding sleeve is slidably arranged on the installation rod, the sliding sleeve is fixed on the installation rod through a jacking bolt, and an upper interface flange for installing the side-mounted liquid level meter is fixed on the sliding sleeve.
3. The bi-directional self-circulating level gauge calibration apparatus of claim 1, wherein: the automatic control device comprises a main tank body water outlet pipe, a main tank body water inlet pipe, a sub tank body water outlet pipe and a sub tank body water inlet pipe, wherein electric control valves are respectively arranged on the main tank body water outlet pipe, the main tank body water inlet pipe, the sub tank body water outlet pipe and the sub tank body water inlet pipe, a first float type liquid level meter used for detecting the liquid level in the main tank body is arranged in the main tank body, and the first float type liquid level meter, a water pump and all the electric control valves are electrically connected with a controller.
4. The bi-directional self-circulating level gauge calibration apparatus of claim 1, wherein: the upper part of the mother tank body is provided with a water supplementing hole which is communicated with a water source through a water supplementing pipe with a valve.
5. The bi-directional self-circulating level gauge calibration apparatus of claim 1, wherein: the bottom of the mother tank body is provided with a liquid level auxiliary regulating hole which is communicated with a liquid level auxiliary regulating pipe with a valve.
6. The bi-directional self-circulating level gauge calibration apparatus of claim 1, wherein: the top of the sub tank body is provided with a mounting frame for mounting a top-mounted liquid level meter, a second position adjusting mechanism for adjusting the upper and lower positions of the mounting frame is arranged between the mounting frame and the sub tank body, a transparent glass tube communicated with the inside of the mounting frame is vertically arranged at the outer side of the sub tank body, a scale for reading the liquid level in the transparent glass tube is arranged at the outer side of the transparent glass tube, a mounting tube with a valve communicated with the inside of the sub tank body is also arranged at the outer side of the sub tank body, a lower interface flange for mounting a side-mounted liquid level meter is arranged at the pipe orifice of the mounting tube, a mounting rod is further vertically arranged on the outer side wall of the sub tank body above the lower interface flange, a sliding sleeve is slidably arranged on the mounting rod, the sliding sleeve is fixed on the mounting rod through a jacking bolt, and an upper interface flange for mounting the side-mounted liquid level meter is fixed on the sliding sleeve; the secondary tank body is also provided with a second float type liquid level meter for detecting the liquid level in the secondary tank body, and the second float type liquid level meter, the water pump and all the electric control valves are electrically connected with the controller.
7. The bi-directional self-circulating level gauge calibration apparatus of claim 6, wherein: the structure of the second position adjusting mechanism is as follows: a plurality of internal thread seats are arranged on the outer side wall of the upper portion of the sub tank body along the circumferential direction, a screw rod is threaded in each internal thread seat, the upper ends of all screw rods are connected with the mounting frame, the screw rods can axially and freely rotate after being connected with the mounting frame, a chain wheel is sleeved on each screw rod, the chain is wound on all the chain wheels, an adjusting hand wheel is arranged at the top of one screw rod, and the adjusting hand wheel can be rotated forward or reversely, so that all screw rods can be moved upwards or downwards along the corresponding internal thread seats synchronously, and the mounting frame for mounting the top-loading type liquid level meter can be driven upwards or downwards synchronously.
8. The bi-directional self-circulating level gauge calibration apparatus of claim 1, wherein: bottom angle adjusting bolts for adjusting the horizontal positions of the tank bodies are arranged at the bottoms of the main tank body and the sub tank body, and horizontal bubbles are horizontally arranged on the upper parts of the main tank body and the sub tank body.
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