KR200283738Y1 - Alarm System of Liquid Level - Google Patents

Abstract

(1) The technical field to which the invention belongs

The present invention is in the field of chemical devices.

(2) Purpose of devising

When the contents are stored in tanks that store liquid substances, the ability to prevent the tank from filling up or exceeding a certain amount of tank capacity is an important function in managing most chemical devices.

In addition, the storage liquid leaks due to damage of the inner tank (9 in FIG. 4, hereinafter referred to as "inner tank") in the storage tank having a double wall structure buried underground (see FIG. 4, hereinafter referred to as "double tank"). Alternatively, if groundwater or the like flows into the leak detection tube (Fig. 4 (hereinafter referred to as "leak leak detection pipe")) due to damage of the external protection wall (Fig. 4 (hereinafter referred to as "external protection wall")), the situation is immediately detected. Therefore, proper measures are one of the most important factors in the management of storage tanks because direct loss due to leakage of storage liquid and indirect loss due to environmental pollution can be prevented in advance.

In this way, when the contents of the tank that stores the contents of the liquid is below or above a certain amount, the device detects the situation immediately when the liquid enters the leak detection tube in the double tank and automatically generates an alarm. In particular, in the existing water level measurement device using the air pressure to improve the point that can not be detected until the liquid level is above a certain amount by the weight of the air itself, and to provide an alarm immediately when necessary As a result, it is designed to reduce the weight of the bure and to increase or decrease the bure by using a magnet, to prevent the overcharge or the loss caused by the over discharge.

(3) constitution

① The present invention was conceived that all liquids have buoyancy so that the beret (2 in Fig. 1) can be easily moved in a limited section in the vertical direction inside the tank.

② The beret (Fig. 1 ②) has an alarm magnet (④ in Fig. 1) that can transmit its position to the magnet switch (3 in Fig. 1), and the beret magnet designed to increase the ascending or descending force of the beret (Fig. 1). ⑥) is fixedly installed.

③ beret is assembled to the body in a form that is fitted from the bottom of the body (① of Figure 1).

④ At the center of the body is installed a magnetic switch (3 ③ in Figure 1) that can detect the magnetic force.

⑤ The bottom of the body is fixed to the body magnet (⑦ of Figure 1) designed to increase the lifting force or descending force of the bure.

⑥ The body is fixed to the required position of the storage tank by using a protective tube (⑤ in Fig. 1), and a wire connected to the magnetic switch is installed inside the protective tube and connected to the external alarm device.

(4) effect of design

① This invention can prevent the accident of overflowing toxic or dangerous goods by immediately alarming and taking necessary action when the liquid contents stored in the storage tank is overcharged over a certain amount.

② By reducing the weight of the bure, the size of the bure to obtain the same buoyancy can be reduced by the rate of weight reduction.

③ It is designed to be able to move very sensitively in the section requiring the air by using the pulling force between the different poles of the magnets or the pushing force between the same poles. You can take action while minimizing.

④ It is designed to be open type and is not affected by external pressure, so it can be used without restriction in high pressure gas storage tank.

Description

Water level alarm system that reduces the weight of the ball and improves the alarm sensitivity by using the magnet attraction force {Alarm System of Liquid Level}

(1) The technical field to which the present invention belongs is the liquid level, water level alarm, overcharge alarm device.

(2) Floating level gauges, ultrasonic level gauges, etc. are used to measure the level of the contents stored in the storage tank, and ball float type shutoff valves have been developed as overcharge alarm devices.

(1) In general, if the liquid to be stored in the storage tank is toxic or belongs to dangerous goods, a device is needed to timely alarm the abnormality of the device due to overflow or over discharge due to overcharge and to take necessary measures. .

(2) If a liquid substance belongs to a dangerous substance which is very sensitive to fire, it may cause an explosion or fire accident by oxygen and ignition source around.

(3) The present invention firstly detects the situation immediately when the liquid level reaches the maximum or minimum limit position that can be stored in the storage tank or when liquid enters the leak detection tube in the double tank, Second, it transmits information about the detected level change to the outside and aims to secure a safe means that does not generate sparks that may cause an accident such as a fire or an explosion in the process of delivering.

(4) As a method of accurately detecting the actual position of the liquid level to reach the maximum or minimum limit position, the present invention uses a bubbling structure that floats on the liquid, and the bubbling force is caused by the inherent buoyancy force of the liquid. It is designed to move on the body of the device, always on top of the liquid.

(5) In the present invention, the permanent magnet and the magnetic switch were used as a means of transmitting information on the position of the beret to the outside. As the magnet moves closer to the magnet switch due to the rise or fall of the beret, the contact of the magnet switch is formed and the necessary electrical signal can be sent to the outside.

(6) A method of safely sending electrical signals to the outside, where magnetic switches and lead wires that generate electrical signals are installed inside the protective tube, and the protective tube is completely spaced from the outside to completely separate from the liquid contents and explode due to sparks. The possibility is fundamentally excluded.

(7) The bure is always positioned at the bottom because of its own gravity due to its fixed weight. And when the liquid level reaches the position where the device of the present invention is installed, the buoyancy acts on the buoy and the buoy does not move unless the magnitude of the buoyancy is greater than gravity. In other words, until the buoyancy of gravity acting on the beret is generated, the alarm is delayed. To solve this delay, it is necessary to design as little as possible the gravity acting on the bure. In the present invention, as a method of reducing the gravity of the burette, the bottom surface of the burette was removed in order to reduce the weight of the burette itself. As the level of the liquid rises to contact the burette, the bottom contacting the liquid could be closed by the liquid, and the lower part was opened. The volume of the space in the burette was kept constant, while the volume of the bottom was removed. It is possible to reduce the weight of the end result is to reduce the gravity.

(8) In addition, in the present invention, the gravity is reduced by using the intrinsic properties of the magnet. In other words, the beret magnet (⑥ in Fig. 1) and the body magnet (⑦ in Fig. 1) is fixed to the bure, respectively, so that the attraction force between the two magnets. This attraction is designed to be smaller than the gravity of the bure, so it has no effect on the rise or fall of the bure as the liquid level rises. However, when two magnets are installed to be opposed to different poles, the gravitational force of the bure may be reduced by the suction force that acts, thereby increasing the bure even with a small buoyancy.

(1) Figure 1 shows the overall configuration of the present invention. The numbers in the text are part numbers and the names of each part number in this document are as follows.

① Body ② Bure ③ Magnetic switch ④ Alarm magnet ⑤ Protective tube ⑥ Bure magnet ⑦ Body magnet ⑧ Air hole

(2) FIG. 2 is a detailed view of the bridle.

(3) Figure 3 is a reference diagram for showing the principle of the operation of the device of the present invention, showing the situation that the beret magnet and the magnetic switch is close to each other as the beret rises with the rise of the liquid level.

(4) FIG. 4 is a view illustrating a situation in which the apparatus of the present invention is used for a storage tank having a general transverse-cylindrical double wall structure. The number in the circle is the equipment number, ⑨ is the inner tank (generally made of steel), ⑩ is the outer protective wall (generally made of materials such as FRP), and 누 is the leak detector. A certain gap is formed between the inner tank and the outer tank. If damage occurs to the inner tank or the outer tank, leakage or incoming contents or groundwater accumulate in the gap. The detector tube is installed to check the presence of liquid accumulated in the gap. In this case, Case 1 is used to detect when the liquid stored in the inner tank is above a certain level. This is the case where it is applied to prevent overflow due to overcharge from the outside. In other words, when the water level is below the position where the device is installed, the water level does not work but only when the water level rises and touches the bure, the water level rises together with the water level to raise the necessary alarm. Case 2 is a case that is installed to detect when the liquid stored in the inner tank is below a certain level, to detect and alarm the excessive discharge of the contents from the tank for the purpose opposite to Case 1 This is the case. Case 3 is installed at the bottom of the leak detection tube. If there is no abnormality in the inner tank or the outer tank, since there is no liquid in the detection tube, no operation is performed. (5) FIG. 5 and FIG. 6 show the position of the beret in the liquid according to the specific gravity of the beret used in the present invention. FIG. 5 illustrates a situation in which a liquid having a specific gravity of 1 is buried in a volume ratio of 1, which corresponds to the surface of the liquid, and FIG. 6 illustrates a volume ratio of a liquid having a specific gravity of 1. Of those who immersed in 0.5% of the bure, the bure rises above 50%. As a result, it can be seen that the smaller the volume specific gravity is, the more advantageous it is to make the air more sensitive to the rise of the liquid surface. To explain the effect, if a magnet with a specific gravity of 1 is placed in a liquid having a specific gravity of 1, and the magnetic force (magnet) of the magnet is applied at the upper part of the magnet, the volume specific gravity of the magnet is equal to the suction force of the magnet. (7) Figure 8 is a schematic design of the alarm unit associated with the present invention. The alarm device designed according to the purpose always sends an electric signal to the magnet switch (3 in FIG. 1) of the present invention, and when the alarm magnet (4 in FIG. 1) approaches the magnetic switch due to the rising of the beret, the magnet The contact point of the switch is formed or released to generate another electrical signal, and receives the signal to generate signals such as sound and light emission. (8) FIG. 9 is a circuit diagram of an alarm device designed to perform the function of FIG. to be.

(1) The body (1 in Fig. 1, hatched part) is in the form of a circular rod (홈) to dig a groove in its lower part and to insert a bure (2 in Fig. 1), and in the center of the groove Protrude to raise or lower in a fixed state.

(2) When the liquid flows into the open groove in the lower part, the air hole (8 in Fig. 1) is drilled in the upper part so that the gas inside the groove is discharged.

(3) Install a magnetic switch (3 in Fig. 1) by drilling a hole in the upper part of the body, and install a protective tube (⑤ in Fig. 1) so that the electrical wiring connected to the magnetic switch can be completely partitioned and protected. Install.

(4) Install a body magnet (⑦ in Fig. 1) by drilling a hole in the upper edge of the body. The magnet is installed in the same concentric circle as the magnet (6 in Fig. 1).

(5) Bure (② of Figure 1) is a structure that can be assembled in the form of being fitted into the groove of the body as shown in FIG. The bure is hollowed out by digging a groove in the form of an open bottom, and when the liquid level rises from the lower side, the surface opened by the liquid is closed, so the air is filled inside the groove. Is raised by buoyancy at.

(5) Install an alarm magnet (④ in Fig. 1) on the upper center side of the bure. At this time, the mutually opposed magnets face the same poles to increase the magnitude of the magnetic field acting on the magnet switch (3 in Fig. 1). The magnet switch (3 in Fig. 1) is designed to operate by detecting the magnetic field acting from the alarm magnet (4 in Fig. 1). Move the magnet switch closer to each other.

(6) Install a bolster magnet (⑥ in Fig. 1) on the upper edge of the bolster. This magnet is installed on the same concentric circle as the body magnet (7 in Fig. 1). The bure magnet and the body magnet are installed in the form of opposite poles or mutually different poles depending on the purpose of the present invention to monitor the maximum level or the minimum level. In other words, if you want to monitor the maximum water level, the different poles should be opposed to each other to minimize the gravity acting on the beret so that it can be moved up easily. It has a function to make the beret move down easily by making gravity larger.

(7) The magnetic switch is connected to an external alarm device and causes the magnetic switch to emit the necessary alarm when the contact is made or released by the alarm magnet.

(8) The series of devices specified in Nos. 1 to 7 above are assembled in the form as shown in Fig. 1 and installed in the proper location of the storage tank, depending on their use. Figure 4 shows the type of the present invention is installed in the storage tank. 4 is a general double tank in which the inner tank is surrounded by an outer protective wall, and a gap is formed between the inner tank and the outer protective wall such that liquid is leaked from the inner tank or the outer protective wall is damaged so that groundwater or the like is introduced from the outside. In this case, it has a structure that flows into the leak detection tube. The single wall tank, not the double tank, has a form in which only the inner tank (9 in FIG. 4) is installed in FIG.

(9) Case 1, which is installed in FIG. 4, is a case where the storage tank can be alerted when the storage amount of the liquid exceeds the maximum storage amount. In this case, the apparatus is in the same situation as in FIG. If the liquid level rises with the increase of the storage volume and reaches the device, the groove in the lower part of the beret is closed while contacting the liquid level. From this time, buoyancy is applied to the beret as the liquid level rises. If the buoyancy is greater than the gravity of the bure, the bure rises. At this time, as shown in Fig. 3, the pulling force already acting between the body magnet (⑦ of Fig. 3) and the bure magnet (⑥ in Fig. 3) becomes stronger as the bure increases, so the bure easily rises. The alarm magnet (④ of FIG. 3) and the magnet switch (3 of FIG. 3) are close to generate an electrical signal.

(10) Case 2 installed in Figure 4 is to install the alarm so that when the storage amount of liquid in the storage tank is less than the minimum storage amount, the device rises to the highest position already as shown in Figure 3 in the state where the liquid is stored Will be in the state. In this case, the magnetic switch is installed at the lower side so that the magnetic switch can operate in the closest position when it is lowered. In addition, the body magnet and the bere magnets are arranged in the form of facing each other to the same pole so that the force to push each other. When the liquid level drops and the buoyancy falls below the force acting by gravity and magnetic force, the beret drops, and when the alarm magnet and the magnetic switch come close to each other, an electrical signal is generated.

(11) Case 3, which is installed in FIG. 4, is installed at the lowermost end of the leak detection tube to monitor the inflow of liquid into the leak detection tube due to damage of the inner tank or the outer protective wall of the double tank. If it is installed in the same shape and the liquid level rises and the liquid level rises, it works like Case 1.

(1) The present invention prevents the accident of overflowing toxic or dangerous goods by providing an immediate alarm when the contents of the liquid stored in the storage tank are overcharged or discharged over a certain amount. The damage can be minimized by early detection of the inflow of storage liquid or groundwater into the leak detector.

(2) By designing the air bubble to detect liquid level change in the lower open type instead of the closed structure, the air bubble can be easily lifted with low buoyancy by reducing the weight of the air itself so that the precise level of water can be monitored.

(3) The bure is designed to be open in the lower part and can be used without restriction in the storage tank of high pressure gas. In other words, if high pressure is applied in the tank, to use the airtight breather, it must be designed to withstand the external pressure acting from the outside, but in this design, the device is simpler because the pressure is not applied to the breather itself. Can be installed.

(4) It is possible to make the movement of the bure more sensitive by the action of the bure magnet and the body magnet installed in the bure and the body, so that a quick and accurate electrical signal can be obtained.

(5) Since the magnetic switch for acquiring the electrical signal is installed in a protective tube completely separated from the liquid stored in the storage tank, a full explosion protection structure can be obtained.

Claims (4)

In order to use the buoyancy of the liquid (2 in Fig. 1) to the structure that can move together by raising or lowering the liquid level, the beret is lowered for the purpose of reducing its weight or excluding the influence of external pressure. It is in an open form, and the alarm magnet (④ in Fig. 1) is fixedly installed on the beret (2 in Fig. 1) as a device for transmitting the position to the magnet switch (3 in Fig. 1), and the alarm magnet (Fig. 1). After the magnet switch (3 in Fig. 1) installed by the magnetic force line generated in ④) of the body is installed on the protruding part of the center part, the buret (② in Fig. 1) is fitted to the protruding part of the body to easily install the shanghai-dong. For example, the magnet switch (3 in FIG. 1) may be raised or lowered depending on the level of the liquid in a state where the liquid is stored in the tank (FIG. 4) or the double oil leak detector tube (FIG. 4). ) And the alarm magnet (④ in Fig. 1) come close to each other Alarm device characterized by causing a miracle signal and an alarm to the outside according to the signal According to claim 1, the magnet (Fig. 1) and the magnet (Fig. 1) is installed on the upper end of the beret (Fig. 1 ②) and the body (① of Fig. 1), respectively. Arrangements for the same pole to be replaced or for different poles to make the movement more sensitive According to claim 1, the lower end of the body has a structure for protruding the bures, the bures in the form of a hollow plate or hollow bar only from the bottom of the circular rods, the alarm magnet is installed on the upper or lower portion And the magnetic switch is placed in the position of the body facing the alarm magnet. The method according to claim 1, wherein the structure (2) of FIG. 1 is in a state of being full, or in the form of a hollow ball so as to have a specific gravity less or greater than the liquid stored in the tank according to the purpose. In order to reduce the gravity of the bure, a bure magnet (⑥ in FIG. 1) and a body magnet (⑦ in FIG. 1) are respectively installed at the top of the bure (② in FIG. 1). The alarm device that makes the beret move more sensitively by arranging the same poles opposite each other or by placing different poles according to its purpose.