KR102434113B1 - Float type level transmitter equipped with a measurement error resolution device due to particle adhesion - Google Patents

Abstract

The present invention relates to a float type level transmitter including a device for solving a measurement error due to particle attachment. This float type level transmitter includes: a recirculation tank having a hollow in an upper part and storing discharged water containing particulate substances for the recirculation of the discharged water; a body part including a stem installed in the recirculation tank in the form of penetrating the hollow, a head connected with one side of an upper part of the stem, and a flange located between the stem and the head to reinforce the connection; a float part located below the flange, and including a float vertically movable in a longitudinal direction of the stem; a pneumatic cylinder part located between the flange and the float, and including a pneumatic cylinder installed below the flange, a spring connected with one side of the pneumatic cylinder, and a cylinder head provided on one side of the spring to come in contact with the float to force the float to be moved downward; a stopper part including a stopper for preventing the float from being moved upward and separated; and a noncontact sensor part comprising a noncontact sensor installed in the form of being surrounded by the outer surface of one side of a lower part of the stem to sense a minimum required water level of the discharged water, and a switch located on one side of an upper part of the noncontact sensor to supply the discharged water into the recirculation tank when the float is moved downward. Therefore, the present invention enables smooth water level measurement and prevention of pump damage.

Description

Float type level transmitter equipped with a measurement error resolution device due to particle adhesion

The present invention is a method of filtering discharged water containing unreacted particles and ash generated in the lower part of the gasifier in the process of converting to syngas under high temperature and high pressure conditions using solid particle fuels such as coal and petroleum coke. It relates to a level transmitter for measuring the water level in the discharge water recirculation tank, which plays a role of recirculation.

In the 21st century, hydrogen is the main energy source along with natural gas, electricity, and ultra-clean fuel oil, and high value-added gasification/fuelization of renewable energy sources, electricity and CO2, is emerging. Clean and easy-to-use gas/liquid fuel oil is used. Expansion is expected, and there is a great need to secure hydrogen energy sources at an affordable price, but technology development and demonstration are required because economic feasibility is not yet secured.

In particular, in terms of the production direction of hydrogen, gray hydrogen technology that uses by-product hydrogen generated during reforming of fossil fuels such as heavy oil and natural gas or steel mills or refining and chemical processes as an energy source, low-grade coal, petroleum coke, and bio Blue hydrogen technology produces hydrogen by using mass and waste and reforms it to produce hydrogen, and green hydrogen technology that produces hydrogen through electrolysis of water using a renewable energy source. can be classified normally.

Therefore, it is judged that it is necessary to develop blue hydrogen technology for hydrogen production required by the market before entering green hydrogen technology rather than the demonstration stage. Plant, in the short term, clean syngas plants are considered to be a key sector in the overseas export plant market. It is judged to be a suitable field for the plant technology investment policy of overseas export and creation of national wealth.

The technology related to the plant for petroleum coke hydrogen production of the present invention can be achieved through a number of fusion technologies.

In general, a gasifier is a high-efficiency facility that uses hydrocarbon fuels such as coal or heavy oil to produce syngas to produce electric power, chemicals, industrial gas, and the like. Syngas containing hydrogen (H2) and carbon monoxide (CO) is generated through this gasifier.

In addition, in general, in the gasifier, organic components among the components of the pulverized coal supplied to the inside are converted into syngas containing hydrogen and carbon monoxide as main components by reaction with oxygen, and exit through the outlet for the downstream process, and inorganic components, that is, Part of the ash is fine particles in the form of fly ash, which are passed out together with the synthesis gas to the downstream process, but in the case of unreacted fine particles, they fall into the cooling water filled in the lower chamber and are rapidly cooled, and the cooling water becomes contaminated water. , the fine particles undergoing rapid cooling are stored in the chamber for a certain period of time, and then are periodically discharged.

In the Republic of Korea Patent Publication No. 10-2317351, the discharged water inlet and outlet is opened to introduce the discharged water containing fine particles inside the case, and the filtered water discharge and dehydrated discharge are opened to facilitate the inflow. When the inflow of the discharged water is completed, the dewatering discharge unit is closed, the discharged water inlet and discharge unit continuously flows in the discharged water, and the filtered water discharge unit is opened to discharge the filtered discharged water. It is discharged through the discharge water through the inlet and outlet, the filtered water discharge unit is closed, and the dewatering discharge unit is open. After all of the discharged water is discharged in the filtration stop step and the filtration stop step, the fine particles of the filter filtration unit through the rotation of the filter filtration unit In the dehydration operation step in which only the dehydration discharge part is opened for dehydration of Part relates to a fine particle filtering device operated in a filter filter unit regeneration step of rotating operation and a fine particle discharging step of transporting, storing and discharging the fine particles desorbed in the filter filter unit regeneration step. In Korean Patent Publication No. 10-2316734, a case 100; a plurality of channels 200 formed vertically inside the case; a catalyst permeation unit 300 positioned between the channels and partially formed with a porous catalyst unit; a reaction gas inlet 400 introduced to the side of the case; and at least two header parts 500 formed to move the fluid to the channel for heat exchange; wherein, the plurality of channels are one or more annular and an annular part 210 is formed around the central axis of the case, , The catalyst permeation part is formed while in contact between the plurality of channels formed by the annular part, and the annular part 210 has the outermost annular part 211 at both ends of the upper and lower parts of the case. Disclosed is a water gas conversion isothermal catalytic reaction apparatus comprising a catalyst permeation unit, characterized in that a flow member 213 and a channel-shaped member 214 having a circular cross section for inducing internal circulation and uniform dispersion are formed. In Korean Patent Publication No. 10-2316737, the present invention discloses a cylindrical reactor case, a center tube located in the center of the case and movable with a fluid, a fluid supply unit connected to the upper part of the case to supply a fluid to the inside, and the fluid supply unit It is formed into a plurality of compartments for the catalytic reaction of the fluid supplied through the A first catalyst layer including a catalyst, a first distribution unit included in the first catalyst layer and configured to move the fluid supplied through the fluid supply unit to the upper end of the first catalyst layer, a first distribution unit included in the first catalyst layer A first confluence part that moves the fluid distributed by the catalytic reaction through the catalyst of the first catalyst layer to merge with the fluid of another compartment through the lower end in the center tube, and is connected to the lower part of the case and is connected to the center tube through the first confluence part A water gas conversion reactor comprising a fluid discharge unit for discharging to the outside moved to the outside, a cooling water discharge unit located at one side of the fluid supply unit to discharge cooling water, and a cooling water supply unit located at one side of the fluid discharge unit to supply cooling water has been

In Korean Patent Publication No. 10-2313690, a gas containing carbon monoxide generated through gasification of petroleum coke and a reaction gas containing steam are supplied and reacted with a high-temperature catalyst and/or a low-temperature catalyst to convert syngas into hydrogen. It is a process using an aqueous iron chelate solution to make an iron chelate aqueous solution that can be directly recovered as sulfur (S) by removing the high concentration hydrogen sulfide (H2S) in the synthesis gas by contacting the iron chelate and the synthesis gas in co-current flow. It relates to a high-concentration hydrogen sulfide removal device with a low consumption of absorbent and increased contact efficiency during the petroleum coke synthesis gasification process for hydrogen production, wherein the synthesis gas is introduced, the hydrogen sulfide is removed, and the hydrogen sulfide is continuously discharged such that the synthesis gas is discharged. a plurality of reaction tubes 100 in the form of a U-tube; a supply pipe 200 connected to the top of the reaction tube to supply an aqueous iron chelate solution; a pressurized injection nozzle 110 for spraying the iron chelate aqueous solution formed into the uppermost portion of the reaction tube connected to the supply tube; a discharge pipe 210 through which an aqueous iron chelate solution containing the hydrogen sulfide formed in each of the lowermost portions of the reaction tube is discharged; a water level control tank 300 for storing the iron chelate aqueous solution in which the plurality of discharge pipes are individually connected to each other to collect the hydrogen sulfide; The iron chelate aqueous solution in which the hydrogen sulfide has been collected from the water level control tank is reduced in pressure and brought into contact with oxygen or air.

Regeneration tank 400 for regenerating the iron chelate aqueous solution through fabric fluidization; a precipitation tank 500 for precipitating sulfur in the iron chelate aqueous solution supplied from the regeneration tank as elemental sulfur to separate it from the iron chelate aqueous solution; and a storage tank 600 for supplying and storing the iron chelate aqueous solution from the precipitation tank to the supply pipe, and abruptly lowering the flow rate of the synthesis gas between the plurality of reaction pipes while reducing the consumption of the iron chelate aqueous solution Disclosed is an apparatus for continuously removing high-concentration hydrogen sulfide in petroleum coke syngas further comprising;

In Korean Patent No. 10-2313692, a reaction tube 100 in the form of a U tube is formed so that synthesis gas is introduced, hydrogen sulfide is removed, and the synthesis gas from which the hydrogen sulfide is removed is discharged; a main reaction tube 200 in which an aqueous iron chelate solution formed at the front end of the reaction tube is sprayed to form a solvent curtain film; a supply pipe 300 connected to the uppermost part of the main reaction tube and the reaction tube to supply the iron chelate aqueous solution; a plurality of first pressurized spray nozzles 210 for spraying the iron chelate aqueous solution respectively formed into the main reaction tube connected to the supply tube; a plurality of discharge pipes 220 through which the iron chelate aqueous solution collecting the hydrogen sulfide formed in the lowermost part of the main reaction tube is discharged; a water level control tank 400 for storing the iron chelate aqueous solution in which the plurality of discharge pipes are individually connected to each other to collect the hydrogen sulfide; a regeneration tank 400 for regenerating the iron chelate aqueous solution through bubble fluidization by reducing the pressure of the iron chelate aqueous solution in which the hydrogen sulfide is collected from the water level control tank and contacting it with oxygen or air; a precipitation tank 500 for precipitating sulfur in the iron chelate aqueous solution supplied from the regeneration tank as elemental sulfur to separate it from the iron chelate aqueous solution; and a storage tank 600 for supplying and storing the iron chelate aqueous solution from the precipitation tank to the supply pipe, wherein the first pressurized injection nozzle is located in the longitudinal direction (RL) of the main reaction pipe based on the position where the discharge pipe is formed A plurality may be formed, a plurality of are formed on the same cross-section in the cross-sectional direction (RC) of the main reaction tube, and the first pressurized injection nozzle is 180 degrees based on an upper cross-sectional line (RCU) on the same cross-section of the main reaction tube. It is formed at intervals of 10 degrees to 25 degrees in the region, and the first pressurized injection nozzle is formed along the upper section line RCU on the same cross-section of the main reaction tube in the longitudinal direction RL of the main reaction tube.

It is formed while changing the angle of formation to a semi-quasi, and the lowermost part of the reaction tube in which the discharge tube is formed adjusts the water level in the water level control tank so that the iron chelate aqueous solution containing a predetermined amount of the hydrogen sulfide remains, and at the rear end of the main reaction tube and a plurality of second pressurized injection nozzles 110 formed at predetermined positions in the vertical direction of the reaction tube, which are formed in communication with each other, and the iron chelate aqueous solution that collects the hydrogen sulfide formed in the lowermost portion of the reaction tube is discharged reaction tube discharge tube 120; A high-concentration hydrogen sulfide removal device using a solvent curtain membrane comprising a.

In Korean Patent Publication No. 10-2300741, in the process of petroleum coke synthesis gasification for hydrogen production, one or more welding objects among pipes or caps rolled-bent, a workbench formed as a frame for welding the welding objects, and one side of the upper surface of the workbench A welding part for welding the object to be welded, a cap fixing part for fixing a cap to be welded by being located on the other side of the upper surface of the work bench, a pipe fixing part for fixing a pipe to be welded by being located on the other side of the upper surface of the work bench , A roll bending welding apparatus including an air cooling part positioned between the cap fixing part and the pipe fixing part on the upper surface of the work table and spraying air to maintain a uniform temperature when the welding object is welded through the welding part is starting

Republic of Korea Patent Publication No. 10-2351661 relates to an apparatus for buffing a cam and a pipe during a petroleum coke synthesis gasification process for hydrogen production, a buffing object that is a cap or a pipe, and a frame for performing the buffing operation of the buffing object A work table formed of Disclosed is an apparatus for buffing that includes a second rail installed on one side, and an external buffing part positioned on the second rail for buffing the outside of the fixed part of the buffing object.

In Korean Patent Publication No. 10-2292411, a raw material gas supply unit 10 for supplying syngas produced in the petroleum coke gasification process; a water supply unit 20 for supplying supply water; a steam generator 100 for stably producing superheated steam using the water supplied to the water supply unit 20; a high-temperature reactor 210 for generating a first gas containing hydrogen under a first temperature condition using the raw material gas supplied from the supply unit 10 and the steam produced from the steam generator 100, and discharging it; a low-temperature reactor 220 for generating a second gas containing a high concentration of H2 under a second temperature condition using the intermediate product discharged from the high-temperature reactor 210 and the steam produced from the steam generator 100 and discharging it; and a hydrogen separator 400 for separating hydrogen in the second gas, wherein the steam generator 100 includes a multi-stage steam production unit, and uses the second gas discharged from the low-temperature reactor 220 to The supply water supplied from the water supply unit 20 is preheated, and the preheated supply water is supplied to the first steam production unit 101 of the steam generator 100 to produce the first steam, which is then steamed.

It is supplied to the drum 110 , and a part of the mixed steam in the steam drum 110 is supplied to the second steam production unit 102 of the steam generator 100 to produce the second steam, which is then used in the steam drum 110 . ), and a part of the mixed steam in the steam drum 110 is supplied to the third steam production unit 103 of the steam generator 100 to produce third steam to the high temperature reactor 210 and the low temperature A high-purity hydrogen production system is disclosed that stably produces superheated steam supplied to the reactor 220 .

Korean Patent No. 10-22922426 discloses a method for continuously separating hydrogen and carbon dioxide with a purity of 99% or more from syngas as a source invention of the present invention, wherein the syngas is supplied through a supply pipe 100 in the syngas. A first step of passing through the first adsorption tower 110 or the second adsorption tower 120 filled with a plurality of first adsorbents capable of selectively adsorbing components other than hydrogen; a second step in which hydrogen purified to high purity via the first or second adsorption tower in the first step is collected in a hydrogen storage tank 140 through a hydrogen pipe 130; In the second step, the adsorption tower for cleaning the first adsorbent saturated with the first tail gas among the first adsorption tower or the second adsorption tower selectively stops the hydrogen production, and the first adsorption tower or the first adsorption tower of the second adsorption tower a third step of separating and cleaning the first tail gas from the adsorption tower by the first vacuum pump 160 formed on the tail gas pipe 150; a fourth step of discharging the second tail gas from which moisture is removed while the first tail gas separated in the third step passes through a gas dryer 200 formed at the rear end of the first vacuum pump; A third adsorption tower ( 220) or a fifth step of passing the fourth adsorption tower 230; a sixth step in which the second tail gas not adsorbed via the third adsorption tower or the fourth adsorption tower in the fifth step is circulated and supplied to the gas dryer through a circulation pipe 240; In the sixth step, the adsorption tower for cleaning the second adsorbent saturated with carbon dioxide among the third adsorption tower or the fourth adsorption tower selectively stops the circulation supply of the second tail gas to the gas dryer, and the third adsorption tower or a seventh step of separating and cleaning the carbon dioxide from the adsorption tower by the second vacuum pump 260 formed on the third tail gas pipe 250 of the fourth adsorption tower; and an eighth step in which the carbon dioxide separated in the seventh step is stored in a carbon dioxide storage tank 290 through a carbon dioxide pipe 280 at the rear end of the second vacuum pump. The adsorption pressure is 0.3 to 0.8 MPa, the desorption pressure is -0.06 to 0.88 MPa, the third and fourth adsorption towers are 0.001 to 0.07 MPa, and the desorption pressure is -0.07 to 0.06 MPa of 99% or more purity of hydrogen and carbon dioxide A method for continuously separating the However, there is a problem in that the hydrogen recovery rate during the adsorption process is lowered.

In Korean Patent Laid-Open Publication No. 2009-0005508, a pressure swing adsorption device comprising a plurality of adsorption towers connected to a raw material supply pipe, a hydrogen storage tank in which hydrogen purified in the adsorption tower is collected, and a valve for opening and closing a plurality of pipes connected to each adsorption tower In the above, the adsorption tower is an adsorbent of a carbon dioxide selective adsorbent other than activated carbon and zeolite 13X, zeolite 5A and zeolite 5A capable of removing carbon dioxide, methane and carbon monoxide contained in the hydrogen mixture gas supplied through the raw material supply pipe therein is filled in a multi-layer structure, is sequentially adsorbed by the adsorbent in the adsorption tower, and a technique for a hydrogen purification method using a pressure swing adsorption device that minimizes the carbon monoxide content in the discharged hydrogen is disclosed, but synthesis gas for increasing the hydrogen recovery rate There is no technology disclosed for a method for continuously and simultaneously separating hydrogen and carbon dioxide in high concentration. Prior Document 10 discloses that, during the gasification reaction in a fractionated bed gasifier of a non-melting type, some heavy fly ash is treated using cooling water of the quencher, thereby reducing the dust load in the dust collector and operating at a high pressure. Fly ash and waste water treatment device of non-melting gasifier that can recirculate cooling water to gasifier without generating odor gas in the atmosphere by separating and treating hydrogen sulfide gas, which escapes together with cooling water discharged from the reactor, into liquid and gaseous phases and to a treatment method.

The present invention is installed to re-supply the cooling water discharged from the actuator of the non-melting gasifier, in which ash is generated in the form of fly ash, to the non-melting gasifier, and a valve for opening and closing and a pump for transferring the coolant are respectively installed. circulation line; a hydro cyclone installed in the circulation line and separating the fly ash collected in the cooling water supplied from the actuator; a gas separator installed in the circulation line so as to be located at the rear end of the hydrocyclone and separating hydrogen sulfide gas contained in the cooling water; a gas combustion unit for burning and processing the hydrogen sulfide gas separated by the gas separator; and a storage tank installed in the circulation line to be located at the rear end of the gas separator and for storing cooling water circulated through the circulation line.

Prior Document 11 relates to a water level control method of a pressure tank, and more particularly, by detecting the presence or absence of an abnormality in a level transmitter for measuring the water level in a pressure tank used in a piping system such as an expansion tank or a water shock prevention tank, the pressure tank It relates to a method for precisely and reliably controlling the water level of

However, the prior art does not disclose a device for solving the measurement error of the float type level transmitter device installed in the discharge water recirculation tank serves to measure the water level.

Republic of Korea Patent Publication No. 10-2351661 Republic of Korea Patent Publication No. 10-2317351 Republic of Korea Patent Publication No. 10-2316734 Republic of Korea Patent Publication No. 10-2316737 Republic of Korea Patent Publication No. 10-2313690 Republic of Korea Patent Publication No. 10-2313692 Republic of Korea Patent Publication No. 10-2300741 Republic of Korea Patent Publication No. 10-2292411 Republic of Korea Patent Publication No. 10-2292426 Republic of Korea Patent Publication No. 10-1436852 Republic of Korea Patent Publication No. 10-1069126

The main purpose of the present invention to solve the problems of the prior art is that unreacted fine particles, ash, etc. generated in devices such as gasifiers and scrubbers are primarily filtered and then supplied to the exhaust water recirculation tank for cooling water recirculation. However, an object of the present invention is to provide a device for solving the measurement error of the float type level transmitter device that is installed in the discharge water recirculation tank and serves to measure the water level.

Other objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments taken in conjunction with the accompanying drawings.

The present invention for solving the above technical problems is a recirculation tank having a hollow at the top and storing discharged water for recirculation of discharged water containing particulate matter, a stem installed in the recirculation tank in a form penetrating the hollow, A head connected to the upper side of the stem, a body portion including a flange positioned between the stem and the head to reinforce the connection, a float located below the flange and movable up and down along the longitudinal direction of the stem. a float part including, a pneumatic cylinder positioned between the flange and the float and installed under the flange, a spring connected to one side of the pneumatic cylinder, and a cylinder head in contact with the float at one side of the spring. A pneumatic cylinder part for forcibly moving the float downward, a stopper part including a stopper for preventing upward movement and separation of the float, is installed in a form surrounded by the outer surface of the lower side of the stem to reduce the minimum required level of discharged water Float type level having a measurement error resolution device by particle attachment comprising a non-contact sensor for detecting and a non-contact sensor unit located on one side of the upper side of the non-contact sensor and comprising a switch for supplying discharged water into the recirculation tank when the float moves downward transmitter is provided.

In addition, the pneumatic cylinder unit may include one or more solenoid valves for supplying air.

In addition, the pneumatic cylinder may be driven to move the float downward by applying a pneumatic pressure of 0.01 bar to 8 bar, preferably 4 bar to 7 bar, and more preferably 6 bar.

The applied pressure may be adjusted through the solenoid valve.

In addition, the pneumatic cylinder may operate if the float is fixed to the body by the particulate matter contained in the discharged water, and the switch is not pressed while the minimum required water level is not detected by the non-contact sensor.

In addition, the pneumatic cylinder unit forcibly moves the float downward so that when the switch of the non-contact sensor unit is pressed, air supply is stopped, and the pneumatic cylinder may return to its original position while discharging the air.

In addition, a signal line or a power line may be connected to any one or more of the body portion, the float portion, and the pneumatic cylinder portion in order to transmit a control signal generated when the float is moved downward in the non-contact sensor portion and is in contact with the switch.

In addition, the level transmitter may further include a control unit in any one or more of the inside or the outside for operation control.

In addition, the control unit may control the operation by receiving any one of a wired or wireless signal.

In addition, the non-contact sensor unit includes a pressure sensor, and the pressure sensor is located on one side of the switch so that when the switch is pressed, the pressure sensor can be pressed.

In addition, including one or more auxiliary switches of a form less protruding than the switch of the non-contact sensor unit, the auxiliary switch can take over the role of the switch even if the normal operation of the switch is impossible.

In addition, the non-contact sensor unit may be located at a position 15% to 25% above the entire length from the bottom of the recirculation tank.

In addition, the pneumatic cylinder may be driven to move the float downward by applying a pneumatic pressure of 0.01 bar to 8 bar.

In addition, the minimum required water level detected by the non-contact sensor may be 100mm to 500mm.

In addition, the recirculation tank may include one or more discharge water outlets for supplying and discharging the discharged water.

In addition, the discharge water outlet may further include a filter for primary removal of particulate matter contained in the discharge water.

In addition, the applied pneumatic pressure may be adjusted to be gradually increased or decreased.

In addition, the applied pneumatic pressure may be driven to give an impact by momentarily applying a maximum pressure to the float.

In addition, the driving to give an impact by applying the maximum pressure may be repeated.

In addition, the discharge water outlet may further include a cover for inflow / stop of the discharge water.

Also, the filter may be a backwash filter.

In addition, the body portion may further include a flow rate sensor for detecting the flow rate of the discharged water.

The present invention has the effect of preventing the sticking problem by detaching the fine particles.

In addition, it is configured to mix water while preventing the sticking problem, so that it has the effect of preventing smooth water level measurement and damage to the pump.

1 shows the operation according to the operation sequence of the level transmitter in an embodiment of the present invention.
Figure 2 shows the operation according to the operation of the pneumatic cylinder when supplying air in an embodiment of the present invention.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings. However, the accompanying drawings are only examples for easily explaining the content and scope of the technical idea of the present invention, and thereby the technical scope of the present invention is not limited or changed. In addition, it will be natural for those skilled in the art that various modifications and changes are possible within the scope of the technical spirit of the present invention based on these examples.

In addition, the terms or words used in the present specification and claims should not be construed as being limited to conventional or dictionary meanings, and the inventor appropriately defines the concept of the term in order to best describe his invention. It should be interpreted as meaning and concept consistent with the technical idea of the present invention based on the principle that it can be done. Therefore, since the embodiment described in this specification is only the most preferred embodiment of the present invention and does not represent all the technical spirit of the present invention, there are various equivalents and modifications that can be substituted for them at the time of the present application. It should be understood that

Figure 1 shows the operation according to the operation sequence of the level transmitter as an embodiment of the present invention, Figure 2 shows the operation according to the operation of the pneumatic cylinder when supplying air according to an embodiment of the present invention.

The present invention has a hollow at the top and a recirculation tank 110 in which discharged water is stored for recirculation of discharged water containing particulate matter, a stem 120 installed in the recirculation tank in a form penetrating the hollow, and the stem of A head 130 connected to an upper side surface, a body portion 100 including a flange 140 positioned between the stem and the head to reinforce the connection, a lower side of the flange 140, and the stem 120 ) A float unit 200 including a float 210 movable up and down in the longitudinal direction, located between the flange 140 and the float 210, and a pneumatic cylinder 310 installed under the flange. , A spring 320 is connected to one side of the pneumatic cylinder, and one side of the spring includes a cylinder head 330 in contact with the float, a pneumatic cylinder part 300 for forcibly moving the float downward, the float A stopper part 400 including a stopper 410 for preventing the upward movement and departure of the stem, a non-contact sensor 510 installed in a form surrounded by the outer surface of the lower side of the stem to detect the minimum required level of the discharged water 510 and A float having a measurement error solving device by particle attachment including a non-contact sensor unit 500 located on one side of the upper side of the non-contact sensor and comprising a switch 520 for supplying discharged water into the recirculation tank when the float moves downward. An expression level transmitter (10) is provided.

In addition, the pneumatic cylinder unit may include one or more solenoid valves 340 for supplying air.

In addition, the pneumatic cylinder unit may expand and contract the spring through the movement of the solenoid valve and the spring.

In addition, the pneumatic cylinder may operate if the float is fixed to the body by the particulate matter contained in the discharged water, and the switch is not pressed while the minimum required water level is not detected by the non-contact sensor.

In addition, the pneumatic cylinder unit forcibly moves the float downward so that when the switch of the non-contact sensor unit is pressed, air supply is stopped, and the pneumatic cylinder may return to its original position while discharging the air.

In addition, a signal line or a power line may be connected to any one or more of the body portion, the float portion, and the pneumatic cylinder portion in order to transmit a control signal generated when the float is moved downward in the non-contact sensor portion and is in contact with the switch.

In addition, the level transmitter may further include a control unit in any one or more of the inside or the outside for operation control.

In addition, the control unit may control the operation by receiving any one of a wired or wireless signal.

In addition, the non-contact sensor unit includes a pressure sensor 521, and the pressure sensor is located on one side of the switch so that when the switch is pressed, the pressure sensor can be pressed.

In addition, including one or more auxiliary switches of a form less protruding than the switch of the non-contact sensor unit, the auxiliary switch can take over the role of the switch even if the normal operation of the switch is impossible.

In addition, the non-contact sensor unit may be located at a position 15% to 25% above the entire length from the bottom of the recirculation tank, and preferably at a position 20%.

In addition, the minimum required water level sensed by the non-contact sensor may be 100 mm to 500 mm, preferably 200 mm to 400 mm, and may respond as the minimum required water level fluctuates as needed.

In addition, the recirculation tank may include one or more discharge water outlet 600 for supplying and discharging the discharged water.

In addition, the discharge water outlet may further include a filter 610 for primarily removing particulate matter contained in the discharged water.

In addition, the filter included in the discharge water outlet may be replaceable.

In addition, the filter may have a mesh hole of 10㎛ to 10,000㎛.

In addition, the applied pneumatic pressure may be adjusted to gradually increase or decrease.

In addition, the applied pneumatic pressure may be driven to give an impact by momentarily applying a maximum pressure to the float.

In addition, the driving to give an impact by applying the maximum pressure may be repeated.

In addition, the discharge water outlet may further include a cover 620 for inflow/stop of the discharge water.

Also, the filter may be a backwash filter.

In addition, the body portion may further include a flow rate sensor for detecting the flow rate of the discharged water.

In addition, the filter may be fixed through a fixing device to withstand the pressure applied when the discharged water is introduced into the recirculation tank, and any type capable of fixing the filter may be used.

In addition, it may further include a control means for controlling or manipulating the components for operating the float type level transmitter having a measurement error solving device by the particle attachment, and the components are controlled through a wired or wireless signal. and a signal can be exchanged, and the control means may be installed in the body portion or may be provided externally through a separate configuration.

Although the present invention has been described in detail through representative embodiments above, those of ordinary skill in the art to which the present invention pertains can make various modifications to the above-described embodiments without departing from the scope of the present invention. will understand

Therefore, the scope of the present invention should not be limited to the described embodiments, and should be defined by the claims described below as well as the claims and equivalents.

10: Float type level transmitter equipped with a measurement error resolution device due to particle adhesion
100: body
110: recirculation tank
120: stem
130: head
140: flange
200: float unit
210: float
300: pneumatic cylinder unit
310: pneumatic cylinder
320: spring
330: cylinder head
340: solenoid valve
400: stopper part
410: stopper
500: non-contact sensor unit
510: non-contact sensor
520: switch

Claims (20)

a recirculation tank having a hollow in the upper portion and storing the discharged water for recirculation of the discharged water containing particulate matter;
a stem installed in the recirculation tank in a form penetrating the hollow, a head connected to an upper side of the stem, and a body portion including a flange positioned between the stem and the head to reinforce the connection;
a float part located below the flange and including a float capable of vertical movement along the longitudinal direction of the stem;
A pneumatic cylinder positioned between the flange and the float, a pneumatic cylinder installed under the flange, a spring is connected to one side of the pneumatic cylinder, and a cylinder head in contact with the float at one side of the spring to force the float downward. a pneumatic cylinder unit for moving;
a stopper portion including a stopper for preventing upward movement and separation of the float;
A non-contact sensor that is installed in a form surrounded by the outer surface of one lower side of the stem to detect the minimum required level of the discharged water, and a switch for supplying discharged water into the recirculation tank when the float moves downward by being located on one side of the upper side of the non-contact sensor A float-type level transmitter having a device for solving measurement errors by particle adhesion including a non-contact sensor unit.
According to claim 1,
The pneumatic cylinder unit is a float type level transmitter having a measurement error resolution device by particle attachment including one or more solenoid valves for air supply.
According to claim 1,
In the pneumatic cylinder, the float is fixed to the body part by the particulate matter contained in the discharged water, and the non-contact sensor has a measurement error solving device by particle adhesion that operates when the switch is not pressed while the minimum required water level is not detected. One float level transmitter.
According to claim 1,
The pneumatic cylinder part forcibly moves the float downward so that when the switch of the non-contact sensor part is pressed, the air supply is stopped, and the pneumatic cylinder returns to its original position while discharging the air. level transmitter.
According to claim 1,
In the non-contact sensor unit, a signal line or a power line is connected to any one or more of the body, the float and the pneumatic cylinder in order to transmit a control signal generated when the float touches the switch when moving downward. Equipped with a float type level transmitter.
According to claim 1,
The level transmitter is a float-type level transmitter having a measurement error resolution device by particle attachment further comprising a control unit in any one or more of the inside or the outside for operation control.
7. The method of claim 6,
The control unit is a float type level transmitter equipped with a measurement error resolution device by particle attachment for controlling the operation by receiving any one of a wired or wireless signal.
According to claim 1,
The non-contact sensor unit includes a pressure sensor, and a pressure sensor is positioned on one side of the switch, and when the switch is pressed, the pressure sensor is pressed.
The method of claim 1,
Float type equipped with a device for solving measurement errors by particle adhesion in which the auxiliary switch replaces the role of the switch even if the switch cannot operate normally, including at least one auxiliary switch of a form less protruding than the switch of the non-contact sensor unit level transmitter.
According to claim 1,
A float-type level transmitter having a device for solving measurement errors due to particle attachment in which a non-contact sensor is positioned at a position 15% to 25% above the total length from the bottom of the recirculation tank.
According to claim 1,
The pneumatic cylinder is a float type level transmitter equipped with a device for solving measurement errors by particle adhesion in which the cylinder is driven to move the float downward by applying a pneumatic pressure of 0.01 bar to 8 bar.
4. The method of claim 3,
A float type level transmitter having a measurement error resolution device by particle adhesion of which the minimum required water level detected by the non-contact sensor is 100 mm to 500 mm.
According to claim 1,
A float-type level transmitter having a measurement error solving device by particle attachment including one or more outlets for supplying and discharging the wastewater to the recirculation tank.
14. The method of claim 13,
A float-type level transmitter having a measurement error resolution device by particle attachment further comprising a filter for primary removal of particulate matter contained in the discharged water at the outlet of the discharged water.
12. The method of claim 11,
A float type level transmitter having a measurement error-solving device by particle adhesion that is controlled so that the applied pneumatic pressure can be gradually increased or decreased.
12. The method of claim 11,
The applied pneumatic pressure is a float type level transmitter equipped with a measurement error resolution device by particle attachment that drives to apply the maximum pressure instantaneously to the float to give an impact.
17. The method of claim 16,
A float-type level transmitter having a measurement error-solving device by particle adhesion that repeats driving to apply the maximum pressure to give an impact.
14. The method of claim 13,
A float type level transmitter having a measurement error resolution device by particle attachment further comprising a cover for inflow/stop of the discharge water at the discharge water outlet.
15. The method of claim 14,
The filter is a backwash filter, a float type level transmitter equipped with a measurement error resolution device due to particle adhesion.
According to claim 1,
A float type level transmitter having a measurement error resolution device by particle attachment further comprising a flow rate sensor for detecting the flow rate of the discharged water in the body portion

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