CN113466082B - High-vacuum intelligent micro-water measuring device and method - Google Patents
High-vacuum intelligent micro-water measuring device and method Download PDFInfo
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- CN113466082B CN113466082B CN202110731557.2A CN202110731557A CN113466082B CN 113466082 B CN113466082 B CN 113466082B CN 202110731557 A CN202110731557 A CN 202110731557A CN 113466082 B CN113466082 B CN 113466082B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
- G01N7/14—Analysing materials by measuring the pressure or volume of a gas or vapour by allowing the material to emit a gas or vapour, e.g. water vapour, and measuring a pressure or volume difference
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Abstract
The invention discloses a high-vacuum intelligent micro-water measuring device and a method, wherein the device comprises a supporting plate, an elbow, a transmission device, a flange, an electromagnetic valve, a glass tube and a monocrystalline silicon pressure sensor; the support plate is provided with a monocrystalline silicon pressure sensor and a transmission device, the output end of the monocrystalline silicon pressure sensor is connected with the input end of the transmission device, and the output end of the transmission device is connected with the input end of the data processing device; the glass tube is arranged on the flange, the upper end of the glass tube is communicated with a water outlet of the condenser, the bottom of the glass tube is provided with a water outlet pipeline, and the water outlet pipeline is provided with an electromagnetic valve; the monocrystalline silicon pressure sensor is communicated with one end of the bent pipe, and the other end of one end of the bent pipe is connected with the bottom of the glass pipe. By arranging the glass tube and the monocrystalline silicon pressure sensor, the difference between the hydrostatic pressure on the probe and the actual atmospheric pressure is measured and used for judging the drying end point. The accuracy of detection data is guaranteed, the labor intensity of operators is reduced, and the drying quality of products is better guaranteed.
Description
Technical Field
The invention belongs to the technical field of transformers, and particularly relates to a high-vacuum intelligent micro-water measuring device and method.
Background
Vapor phase drying of transformer products is a key process for manufacturing products, and oil-immersed power transformers and reactors are all required to be subjected to vapor phase drying treatment so as to control the water content in insulating parts, improve the electrical properties of materials and ensure the product quality. The drying end point judgment is an important link, and the correct judgment has great significance for ensuring the insulation treatment quality and reasonably using the energy. The body is not enough dried, and the water content in the insulation can reduce the dielectric constant of the product, influence the insulating electrical strength of the product, and influence the quality of the product. The body is excessively dried, so that the production efficiency of the product is reduced, the energy waste is caused, the manufacturing cost is increased, and the insulation material is damaged and is not beneficial because the body is in a high-temperature vacuum state for a long time.
The measurement of high vacuum micro water in the product drying process is an important condition for judging the drying end point. The high-vacuum pumped gas of the product passes through the condenser, part of the high-vacuum pumped gas becomes water to be collected in the gas discharge device (glass cylinder), and part of the high-vacuum micro-water is discharged, and usually, the dry high-vacuum micro-water of the product is collected in a glass tube with scales, so that people are required to frequently visually record the water yield, measurement is inaccurate, the water yield is calculated to be unsatisfied, meanwhile, the water level is frequently observed in the process, and a valve is opened for water discharge, so that the process is more complicated; the labor intensity is high. And cannot be read remotely.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides the high-vacuum intelligent micro-water measuring device and the high-vacuum intelligent micro-water measuring method, which realize the functions of changing manual detection into intelligent detection and remotely transmitting to an office computer, improve the accuracy of high-vacuum micro-water detection of products and reduce the labor intensity of operators.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a high-vacuum intelligent micro-water measuring device comprises a supporting plate, an elbow, a transmission device, a flange, an electromagnetic valve, a glass tube and a monocrystalline silicon pressure sensor;
the support plate is provided with a monocrystalline silicon pressure sensor and a transmission device, the output end of the monocrystalline silicon pressure sensor is connected with the input end of the transmission device, and the output end of the transmission device is connected with the input end of the data processing device;
the glass tube is arranged on the flange, the upper end of the glass tube is communicated with a water outlet of the condenser, a water outlet pipeline is arranged at the bottom of the glass tube, and an electromagnetic valve is arranged on the water outlet pipeline;
the monocrystalline silicon pressure sensor is communicated with one end of the bent pipe, and the other end of one end of the bent pipe is connected with the bottom of the glass pipe.
Preferably, the glass tube is of a cylindrical structure, and the inside of the glass tube is of a reducing structure.
Further, the diameter of the upper end of the interior of the glass tube is greater than the diameter of the lower end.
Preferably, a screw is arranged on the outer side of the glass tube, one end of the screw is fixed on the flange, the other end of the screw is fixed on the exhaust separator flange, the exhaust separator flange is fixed on the upper end of the glass tube, and the exhaust separator flange is communicated with the water outlet of the condenser.
Preferably, the number of the screws is 3, and the screws are circumferentially and uniformly distributed on the outer side wall of the glass tube.
Preferably, a protective cover is arranged on the supporting plate, and the monocrystalline silicon pressure sensor and the transmission device are arranged inside the protective cover.
Preferably, the two ends of the bent pipe are installed at the same height.
Preferably, the joint of the glass tube and the flange is provided with sealant.
Preferably, the transmission device is a wireless transmission device.
A high-vacuum intelligent micro-water measuring method based on the high-vacuum intelligent micro-water measuring device comprises the following steps that in a product vapor phase drying and high-vacuum drying stage, gas pumped out of a drying tank continuously discharges water into a glass tube through a condenser, a bent pipe transmits water pressure in the glass tube to a monocrystalline silicon pressure sensor, the monocrystalline silicon pressure sensor measures the difference between the hydrostatic pressure and the actual atmospheric pressure, the monocrystalline silicon pressure sensor outputs the water yield, the accumulated water yield and the water yield to a data processing device through a transmission device, and the water yield, the accumulated water yield and the water yield are calculated and used for judging a drying end point.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention provides a high vacuum intelligent micro water measuring device, which is characterized in that a glass tube and a monocrystalline silicon pressure sensor are arranged, gas pumped out of a drying tank continuously discharges water into the glass tube through a condenser in a high vacuum drying stage of vapor phase drying of a product, a bent tube transmits the water pressure in the glass tube to the monocrystalline silicon pressure sensor, the sensor measures the difference between the hydrostatic pressure on a probe and the actual atmospheric pressure, and based on the principle that the measured hydrostatic pressure is in direct proportion to the height (the precision is 0.5 mm) of the liquid, a monocrystalline silicon pressure sensitive element and an electronic element convert the pressure difference into an electric signal, and the electric signal is output to a data processing device through a transmission device to calculate water yield, accumulated water yield and water yield for judging a drying endpoint. The drainage end is provided with an electromagnetic valve to realize automatic drainage. Meeting the requirement of high vacuum micro water change volume and water yield of the product; the accuracy of detection data is guaranteed, the labor intensity of operators is reduced, and the drying quality of products is better guaranteed. The product drying quality is reliably ensured, the intelligent detection of water yield and the remote data transmission are realized, the automatic water discharge function of the separator is realized, the data accuracy (which is improved by more than 200 times compared with the prior measurement accuracy) is ensured, the labor intensity of operators is reduced, and good social benefit and economic benefit are expected.
Further, the water yield increases along with the drying time and is smaller and smaller in the high vacuum stage of product drying, namely the water pressure is gradually reduced, the water pressure is detected by the monocrystalline silicon pressure sensor by arranging the inner cavity with the unequal diameter structure, namely the diameter of the upper end inside the glass tube is larger than that of the lower end, and the water yield in the later stage is mainly collected in the glass tube with the thin lower part, so that the detection is convenient.
Furthermore, the monocrystalline silicon pressure sensor and the transmission device are arranged inside the protective cover by arranging the protective cover on the supporting plate and used for protecting the monocrystalline silicon pressure sensor and the wireless transmission device.
Furthermore, the installation heights of the two ends of the bent pipe are the same, so that the influence of the pressure difference caused by the height difference on the accuracy of the measurement data is avoided.
Further, by arranging the sealant at the connection part of the glass tube and the flange, the tightness is improved, and the pressure imbalance caused by leakage is avoided, so that the accuracy of measurement data is influenced.
Drawings
FIG. 1 is a schematic diagram of a high vacuum intelligent micro water measuring device.
Fig. 2 is a side view of a three-dimensional structure of a glass tube of the present invention.
Fig. 3 is a bottom view of a three-dimensional structure of a glass tube of the present invention.
FIG. 4 is a cross-sectional view of a glass tube of the present invention.
In the accompanying drawings: the pressure sensor comprises a supporting plate 1, an elbow pipe 2, a transmission device 3, a flange 4, an electromagnetic valve 5, a screw rod 6, a glass tube 7, a protective cover 8 and a monocrystalline silicon pressure sensor 9.
Detailed Description
The invention will now be described in further detail with reference to specific examples, which are intended to illustrate, but not to limit, the invention.
The invention relates to a transformer vapor phase drying high vacuum intelligent micro water measuring device, which meets the requirements of high vacuum micro water change volume and water yield of products, calculates data by using a special program and remotely transmits the data to a computer; meanwhile, an electromagnetic valve is arranged at the drainage end, so that automatic drainage is realized, the accuracy of detection data is guaranteed, the labor intensity of operators is reduced, and the drying quality of products is better guaranteed.
The invention reliably ensures the drying quality of the product, realizes the functions of intelligently detecting the water yield and remotely transmitting data, automatically draining the separator, ensures the accuracy of the data (which is improved by more than 200 times compared with the prior measuring accuracy), reduces the labor intensity of operators, and is expected to have good social benefit and economic benefit.
The invention relates to a high-vacuum intelligent micro-water measuring device which comprises a supporting plate 1, an elbow pipe 2, a transmission device 3, a flange 4, an electromagnetic valve 5, a glass tube 7 and a monocrystalline silicon pressure sensor 9; the support plate 1 is provided with a monocrystalline silicon pressure sensor 9 and a transmission device 3, the output end of the monocrystalline silicon pressure sensor 9 is connected with the input end of the transmission device 3, and the output end of the transmission device 3 is connected with the input end of the data processing device; the glass tube 7 is arranged on the flange 4, the upper end of the glass tube 7 is communicated with a water outlet of the condenser, the bottom of the glass tube 7 is provided with a water outlet pipeline, and the water outlet pipeline is provided with an electromagnetic valve 5; the monocrystalline silicon pressure sensor 9 is communicated with one end of the bent pipe 2, and the other end of one end of the bent pipe 2 is connected with the bottom of the glass tube 7.
Examples
As shown in fig. 1, the high-vacuum intelligent micro-water measuring device for vapor phase drying of the transformer comprises a supporting plate 1, an elbow pipe 2, a transmission device 3, a flange 4, an electromagnetic valve 5, a screw 6, a glass tube 7, a protective cover 8 and a monocrystalline silicon pressure sensor 9.
The supporting plate 1 is provided with a hole, the bent pipe 2 is inserted into the hole, one end of the bent pipe is connected with the monocrystalline silicon pressure sensor 9, the other end of the bent pipe is connected with the flange 4, and the installation heights of the two ends of the bent pipe 2 are kept consistent. The upper flange 4 of the supporting plate 1 is provided with a boss, the glass tube 7 (unequal diameters) is clamped outside the boss of the flange 4, the glass tube 7 is of a cylindrical structure, and the inside of the glass tube 7 is of a variable diameter structure; the diameter of the upper end of the interior of the glass tube 7 is larger than the diameter of the lower end. And the periphery is coated with sealant, screw rods 6 are uniformly distributed around the glass tube, the flange 4 and the exhaust separator are connected into a whole, the lower tube of the supporting plate 1 is connected with an electromagnetic valve 5, the water is automatically discharged to a drainage system according to a program set value, a protective cover 8 is arranged on the supporting plate 1, and a monocrystalline silicon pressure sensor 9 and a transmission device 3 are arranged in the protective cover 8. For protecting the monocrystalline silicon pressure sensor 9 and the transfer device 3.
The outside of the glass tube 7 is provided with a screw rod 6, one end of the screw rod 6 is fixed on the flange 4, the other end of the screw rod 6 is fixed on a gas discharge separator flange, the gas discharge separator flange is fixed on the upper end of the glass tube 7, and the gas discharge separator flange is communicated with a water outlet of the condenser. The number of the screws 6 is 3, and the screws 6 are uniformly distributed on the outer side wall of the glass tube 7 in the circumferential direction.
As shown in fig. 2 to 4, in the glass tube 1, the water yield of the product in the drying high vacuum stage is reduced along with the increase of the drying time, namely, the water pressure is gradually reduced, so that the monocrystalline silicon pressure sensor 9 is convenient to detect the water pressure, the water yield in the later stage is mainly collected in the lower thin glass tube, the calculation is carried out according to the historical data of the water yield of the dried product, and the volume (see) of the glass tube 7 is designed to meet the water yield requirements of products with different tonnages.
The invention relates to a high vacuum intelligent micro water measuring method, which comprises the following steps of vapor phase drying and high vacuum drying of a product, continuously discharging water from a drying tank to a glass tube 7 through a condenser, transmitting the water pressure in the glass tube 7 to a monocrystalline silicon pressure sensor 9 by a bent tube 2, measuring the difference between the hydrostatic pressure on a probe and the actual atmospheric pressure by the sensor, converting the pressure difference into an electric signal by a monocrystalline silicon pressure sensitive element and an electronic element based on the principle that the measured hydrostatic pressure is in direct proportion to the height (the precision is 0.5 mm) of the liquid, outputting the electric signal to an office computer through a wireless transmission device 3, and calculating the water yield, the accumulated water yield and the water yield through a program for judging a drying end point. The drainage end is provided with an electromagnetic valve, and automatic drainage is realized at intervals according to a program set value.
The high-vacuum intelligent micro water measuring device for the vapor phase drying of the transformer meets the product drying judging requirement, reliably ensures the product drying quality, realizes the functions of intelligently detecting the water yield and remotely transmitting data, automatically draining the data by the separator, improves the data accuracy (which is improved by more than 200 times compared with the prior measuring precision), reduces the labor intensity of operators, and is expected to have good social benefit and economic benefit.
The high-vacuum intelligent micro water measuring device for the vapor phase drying of the transformer meets the product drying judging requirement, reliably ensures the product drying quality, realizes the functions of intelligently detecting the water yield and remotely transmitting data, automatically draining the water by the separator, improves the data accuracy (200 times higher than the previous measuring precision), reduces the labor intensity of operators, and predicts good social benefit and economic benefit, and the data is wirelessly transmitted and remotely read; the water collecting pipe can automatically drain water.
Claims (4)
1. The high-vacuum intelligent micro-water measuring device is characterized by comprising a supporting plate (1), an elbow pipe (2), a transmission device (3), a flange (4), an electromagnetic valve (5), a glass tube (7) and a monocrystalline silicon pressure sensor (9);
the single crystal silicon pressure sensor (9) and the transmission device (3) are arranged on the supporting plate (1), the output end of the single crystal silicon pressure sensor (9) is connected with the input end of the transmission device (3), and the output end of the transmission device (3) is connected with the input end of the data processing device;
the glass tube (7) is arranged on the flange (4), the upper end of the glass tube (7) is communicated with a water outlet of the condenser, a water outlet pipeline is arranged at the bottom of the glass tube (7), and an electromagnetic valve (5) is arranged on the water outlet pipeline;
the monocrystalline silicon pressure sensor (9) is communicated with one end of the bent pipe (2), and the other end of one end of the bent pipe (2) is connected with the bottom of the glass pipe (7);
the glass tube (7) is of a cylindrical structure, and the inside of the glass tube (7) is of a reducing structure;
the diameter of the upper end of the interior of the glass tube (7) is larger than that of the lower end;
the outer side of the glass tube (7) is provided with a screw (6), one end of the screw (6) is fixed on the flange (4), the other end of the screw (6) is fixed on a gas discharge separator flange, the gas discharge separator flange is fixed on the upper end of the glass tube (7), and the gas discharge separator flange is communicated with a water outlet of the condenser;
the number of the screw rods (6) is 3, and the screw rods (6) are circumferentially and uniformly distributed on the outer side wall of the glass tube (7);
a protective cover (8) is arranged on the supporting plate (1), and the monocrystalline silicon pressure sensor (9) and the transmission device (3) are arranged in the protective cover (8);
the two ends of the bent pipe (2) are installed at the same height.
2. The high-vacuum intelligent micro-water measuring device according to claim 1, wherein a sealing glue is arranged at the connection part of the glass tube (7) and the flange (4).
3. The high-vacuum intelligent micro water measuring device according to claim 1, wherein the transmission device (3) is a wireless transmission device.
4. The high-vacuum intelligent micro water measuring method is characterized by comprising the following steps that in a product vapor phase drying and high-vacuum drying stage, gas pumped out of a drying tank continuously discharges water into a glass tube (7) through a condenser, a bent tube (2) transmits water pressure in the glass tube (7) to a monocrystalline silicon pressure sensor (9), the monocrystalline silicon pressure sensor (9) measures the difference between the hydrostatic pressure and the actual atmospheric pressure, the monocrystalline silicon pressure sensor (9) outputs the water to a data processing device through a transmission device (3), and the water yield, the accumulated water yield and the water yield are calculated and obtained for judging a drying end point.
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