SU911235A1 - Device for checking liquid purity - Google Patents

Description

(54) DEVICE FOR THE CONTROL OF LIQUID PURITY

The invention relates to a process for controlling the purity of a fluid and can be used in installations for cleaning, washing and filling hydraulic, fuel and oil systems in mechanical engineering, machine-tool construction, automotive, shipbuilding, petrochemical and other industries. A device for express analysis of judging by the optical method is known, in which the content of mechanical impurities is indicated by the color intensity of the prints that appeared on the 1-character element i, when in contact with the mechanical impurities in the places of the fluid flow {1. A disadvantage of the known device is the low control accuracy. Sampling is carried out in an open way from the tank; contaminants from the environment can get into lioTopyio. The use of the device in closed liquid systems is not possible. In addition, the control of the fluid is carried out by an in-a-mental comparison with the zonal intensity and intensity, which makes it impossible to count the number and determine the particle size. It is also known a device for controlling the purity of a fluid by filtration, comprising a cylindrical body with 1 lever of an optically transparent material, a piston, a replaceable filter, and a pump-out system 2. The disadvantages of the known device are low control accuracy, design complexity, and labor-intensive control. The low accuracy and large laboriousness of the control are due to the fact that in this device the counting and determination of the size of the slice is done by the operator with the unskilled eye, which is a complicated and time-consuming process, it slows down the operator, the results of counting and determining particle sizes are unreliable mc with large errors. In the device there is no separate control for large and small cvstkdam. In addition, the presence of an evacuation system involved in the monitoring process significantly complicates the design of the device and limits its applicability. 391 The closest technical solution to the invention is a device for a contact, a purity of liquid containing a cylindrical body in which a piston, a replaceable filter, a cover made of optical 1 are successively located: about a transparent material, the surface of which has a calibration grid, a light source that collimates the system has an open flip-off lid, a control filtration unit with a fine ohshka filtering element and a device with neutral gas on the outlet pipe of the body 13. The disadvantages of the known The devices are the complexity of the design, the complexity of the controls and the limited applicability. Complicates the design and operation of a known device with a neutral gas device used to control fines. In addition, a device with neutral gas several times increases the weight and dimensions of the structure as a whole, complicates maintenance, especially in field conditions. The reason for the complexity of the control is the calibration grid deposited on the surface of the opto-transparent cover. It reduces the transparency of the lid, which causes an increase in operator fatigue, as a result of which the control time increases and its reliability decreases. The permanently installed collimating system and the calibration grid deposited on the optically transparent lid do not allow the use of large fractions and microscopes or automatic devices for machine analysis of contaminants for counting microparticles. In addition, the entire fluid flow passes through a known device; The purpose of the invention is to simplify the design of the device. The goal is achieved by the fact that in a device for controlling the purity of a fluid, a cylindrical body with a piston installed in series with it, a replaceable filter, a protective optically transparent window with a calibration device, a light source, a collimator system and a protective flip, and an inlet and outlet piping, the drain pipe with a fine filter and the gas supply system into the cavity of the chassis body; the gas supply system is designed as an air purification filter with m valve and connected to the outlet pipe using a three-way valve, and the piston is made in the form of a solid plate with a built-in non-return valve. FIG. 1 shows the scheme of the devices: a; in fig. 2 shows section A-A in FIG. 1. The device includes a housing 1, which has a calibrated volume with an optically transparent lid 2, above which a rotary calibration sight is mounted 3. In the housing there is a piston 4 with a non-return valve 5 built into it, a lever 6 and a replaceable filter 7. Above the optically transparent Krucki 2 , coaxially with it and the housing, a light source 8 and a collimating system 9 are installed, covered by a protective flip cover 10 .. On the drain pipe And a control filtration unit 12 is installed with a fine filter element 13. The device is connected to the main pipeline 14 by means of taps 15 and 16 of the inlet pipes 17 and 18, pipeline 19 and crane 20. The valve 16 connects the fine filter 21 to the main pipeline, ensuring the device is flushed with clean liquid. A check valve 22 prevents the system from backflow, liquid. The device also contains taps 23 and 24. Fine filter 25 and return L valve 26 are installed on the outlet pipe 27 of the housing. On the main pipeline line 14, a device 28 is installed, which regulates the operation mode. The device works as follows. Liquid from the main pipeline 14, with a mode regulator 28 installed on it, through taps 15 and 16 through pipeline 17 enters the cylindrical body 1 with a calibrated volume and through the valve 20 through pipeline 19 into the main pipeline 14, while the regulator 2S work is set to the selection position. When monitoring the fluid volume for mechanical impurities, the mode controller 28 is set to the trunk side. Housing 1 with cranes 15 and 20 is disconnected from the trunk. The lever 6 from position 6 is set to position 62, nftt where the piston 4 from position 4 rises to the extreme upper position 4g and the filter 7, with mechanical impurities with coarse particles settled on it, tightly pressed against the optically transparent edge 2. Particles of the small fraction together with the controlled fluid. Transition from the upper part of the housing 1 through a replaceable filter / and check valve 5 to the lower part of the housing 1.

The light source 8 is switched on, the zipper camera 10 is opened and, visually, through the collimating system 9 by means of a rotational calibration gauge 3, 5. placed over the lid of the transparent cover 2, the amount is counted and the size of the coarse particles deposited on the filter is determined.

If the number c of the particle size of the coarse fraction is above the norm, the process of cleaning, rinsing, or filling the liquid (the system continues, and the device for monitoring the purity of the liquid is flushed.

For flushing the device, the operation mode regulator 28 is placed in the Selection position, taps 15, 16 and 23 and the opening from the main pipeline 14 through the conduit 18 through the fine filter 21, the check valve 22 is sent to the lower cavity of the housing 1, flushes the walls of the housing, the lower part of the piston, the bottom and through pipelines 11 and 19 through a three-way valve 24 enters the main pipeline 14, while the node 12 of the control filter- -5 days with the filter element 13 is removed.

To flush the upper cavity of the housing, the operation mode controller 28 is set to the Ma1T1stral position, the valve 15 is closed, the three-way valve 20 is set to the air intake position through the fine filter 25 and the non-return valve 26. The compressor 6 is set to the 6i position, while the air from the atmosphere through the fine filter 25 and the non-return valve 26 enters the upper cavity of the housing and allows the piston 4 to freely lower to the 4i position. The valve 23 is closed, the three-way valve 20 is opened to allow liquid to flow into the pipe 19, the valve 15 is opened, and the mode controller 28 is set to the selection position.

The liquid cleaned by the filter 21 from the pipeline 18 is guided into the upper cavity of the housing 1 and flushes the replacement filter 7, the housing walls, the optically transparent cover 2 and exits through the three-way valve 20 through conduit 27 and 19 into the trunk pipeline 14,

Crane 23 opens, valve 20 closes-. with . The cleaned fluid from line 18 is sent to Kojanyc 1 through a filter cartridge 7, remove the upper part of the piston (under the filter), forming the 1st valve 5 and the lower part of the housing 1,

If the liquid is contaminated with a coarse fraction: Normal (the piston is in the extreme upper position), the control over the coarse fractions of the particles is ended.

To control the fine particles, a control filtration unit 12 is installed with a fine filter element 13. The taps 23 and 24 are open, the three-way valve 20 is installed. Into the position of the air intake. The lever 6 is set to position 6i, while the air from the atmosphere through the air purification filter 25 and the check valve 26 enters the berch cavity of the housing and allows the piston 4 to freely lower to position 4i. The fluid enclosed in the porish pressure vessel 1, with the non-return valve 5 closed in the spring, is guided through pipe 11 through a control filtration unit 12 with a HiEi discharge fine filter 13.

The control filtration unit 12, after passing the controlled liquid through it, is removed, the fine filter element 13 is removed and the fine fraction is counted with simultaneous determination of particle sizes, for example, using a microscope.

After removing the control filtration unit 12 to prepare the device for further work in order to control the purity of the fluid, the upper and lower cavities of the cortus are flushed out with purified liquid coming from conduit 18 (as described). A non-return valve 22 prevents the system from a reverse flow of fluid and a non-return valve 26 prevents the flow of fluid into the environment.

The use of the invention will allow:

-improve the design and operation of the device;

- to reduce the weight and dimensions by eliminating the device with a neutral gas and providing fine filtration by the reverse stroke of the piston, which allows unlimited use of the device in field conditions and in installations with small dimensions;

- to reduce the labor intensity of the control by 15% due to the reduction of operator fatigue with the use of replaceable rotary viziOM and increase the transparency of the lid;

- apply automated means for the masin analysis of the contaminants of liquids deposited on the control filter with the collimater removed and the interchangeable swivel viewfinder;

-improve the operation of the device and reduce the cost of it.

The economic effect of the party 100 pcs. will be 150 thousand rubles. in year.

Claims (3)

1. Author's certificate of the USSR N 323719, cl. G 01 N 21/06, 1969, 2. Authors certificate of the USSR N 412909, cl. At 01 D 35/00. 1971. 3. USSR author's certificate number 672505, cl. G 01 J 1 / 04,1978 (prototype).