RU208446U1 - RESERVOIR FOR STORING AND DISPENSING ANTI-CRYSTALLIZING LIQUID FOR SHIP FUEL SUPPLY SYSTEM - Google Patents

Abstract

The utility model relates to equipment used in the field of aviation fuel supply. Reservoir (1) for storing and dispensing anti-water crystallization liquid (PVCL) for the ship's aviation fuel supply system contains a cylindrical body (2) with means (3) for receiving PVCL, means (4) for issuing CVCL and means (5) for receiving nitrogen, and a hatch (6) with cover (7) for access to the inside of the tank. The working position of the tank is the position in which the body (2) of the tank is placed horizontally along the longitudinal axis (L) of the cylinder forming the body, and the hatch is located on one of the end walls of the body (2) over the entire area of the end wall. EFFECT: increased speed and efficiency of tank maintenance procedures. 3 w.p. f-ly, 2 ill.

Description

Technology area

The utility model relates to a tank for storing and dispensing anti-water crystallization liquid (DSCL) used in the field of aviation fuel supply, in particular, to a tank for storing and issuing PACF for a ship's aviation fuel supply system.

State of the art

PWKZH are added to fuels for gas turbine (jet) engines, refueled in aircraft, in order to reduce the likelihood of water crystal formation in fuel tanks during flight. Reservoirs for receiving and dispensing PFCS, in particular, are used in the systems for dosed injection of PFCs into aviation fuel during refueling of an aircraft, which are part of the ship's aviation fuel supply systems (SATO), and are installed next to fuel transfer pumps operating when refueling aircraft.

PVKZH are neurovascular poisons, causing poisoning when ingested, as well as inhalation of vapors and through the skin when in contact with liquid, which necessitates taking measures to exclude the entry of PVKI outside the equipment intended for them.

For storage and dispensing of PPKL, tanks are usually used containing a cylindrical body having means for receiving and dispensing means of PPKL. The reservoirs can also be equipped with means for supplying nitrogen, either pumped between the walls of the reservoir, or supplied to the interior of the reservoir to create a so-called "nitrogen blanket".

Reservoirs for storage and dispensing of PACL are known, for example, from the source / 1 / "Consumable control tanks for PAC" // URL: http://www.agregatnpo.ru/production/obor-pvk/rk-02.html (date 2021) or / 2 / “Horizontal steel cylindrical tank RGS-50” // URL: https://all-pribors.ru/opisanie/75933-19-rgs-50 (date of access 08/10/2021). The reservoir described in the source / 2 / for storing and issuing the DRC was chosen by the applicant as the closest analogue of the utility model.

Taking into account the toxic properties of PWKL, an important aspect of the operation of storage tanks for storage and delivery of PWKL is their periodic inspection, which makes it possible to make sure that there is no corrosion or take timely measures to eliminate it, as well as regular cleaning from the remains of PKL after the tank is emptied. For this purpose, known reservoirs can be equipped with access hatches to the interior of the reservoir and carry out the necessary operations.

However, such hatches usually have a relatively small diameter and are located on top of the tank, which entails the need to equip the tank with a ladder to access the hatch, complicating the access procedure and increasing its time. In addition, the location of the hatch makes it difficult to deliver the equipment needed to inspect, clean and repair the tank. These disadvantages are especially significant when operating such a tank as part of a ship's aviation fuel supply system, that is, in conditions of increased instability and vibration.

Based on the foregoing, the technical problem to be solved by the utility model is to propose a tank for storing and dispensing anti-water crystallization liquid of an improved design, adapted for use in a ship's aviation fuel supply system, in particular, providing the possibility of quick and easy access to the tank with improving the speed and efficiency of tank maintenance procedures.

Disclosure of the essence of the utility model

To solve this technical problem, a reservoir is proposed for storing and dispensing anti-water crystallization liquid (DSCF) for a ship's aviation fuel supply system, containing a cylindrical body with a means for receiving PACF, a means for issuing PACF and a means for receiving nitrogen, and a hatch with a cover for access to the inside of the tank, while the operating position reservoir is the position in which the reservoir body is placed horizontally along the longitudinal axis of the cylinder forming the body. According to the utility model, the hatch is located on one of the end walls of the body over the entire area of the end wall.

The cylindrical shape of the body eliminates the creation of stagnant zones that contribute to the accumulation of contaminants in the PVCL during its storage, facilitating the maintenance of the tank during operation, during which the inner surfaces of the body are cleaned manually. At the same time, the horizontal arrangement of the tank, combined with the execution of the hatch opening over the entire area of the end wall of the tank, further simplifies its maintenance due to simple and quick access inside without the need for stairs and the absence of inconveniences associated with access to the tank from above through a smaller hatch opening. ... This advantage becomes even more significant in the conditions of instability and vibration that occur in the case of a ship application. Based on the design and purpose of the tank, making a hatch over the entire area of the end wall is the best way to obtain the largest possible opening for access to the tank.

In addition, the design of the tank according to the utility model allows placing in the immediate vicinity of the tank the entire set of equipment that may be needed during its inspection, repair and cleaning, and quickly leave the tank to choose from this set of equipment that is required at the moment, which would be difficult with limited area of means of access to the hatch in the known tanks.

Thus, the present utility model proposes a reservoir for storing and dispensing anti-water crystallization fluid of an improved design, adapted for use in a ship's aviation fuel supply system, providing quick and easy access to the reservoir, increasing the speed and efficiency of tank maintenance procedures.

According to an embodiment of the utility model, the housing 2 is made of corrosion-resistant steel grade 12X18H10T. Such steel is intrinsically safe, non-magnetic, chemically and corrosion-resistant and provides high reliability of the tank, including when operating on the open deck of a ship in difficult climatic conditions.

According to another embodiment of the invention, the manhole cover comprises a sampling device. This design makes it possible to take samples from the PVCL in the tank and remove the sampling device together with the lid so that it does not interfere with the maintenance of the tank.

According to a further embodiment of the invention, the hatch cover comprises handles arranged symmetrically with respect to the center of the lid, the lid being adapted to rest on the handles in its removed position.

The presence of handles and the ability to support the cover on the handles simplifies the operation of removing the cover from the hatch and installing it on the hatch, and if there is a sampling device in the cover, it prevents damage when the cover is removed.

According to yet another embodiment of the utility model, a bypass magnetic level indicator of the PWKL is fixed on the tank body, made with the possibility of visual indication of the level of the PFLF contained in the tank, containing a limit switch configured to supply an electrical shutdown signal to the fuel transfer pump of the ship's aviation fuel supply system when the level of the PFL in tank below the set value.

Equipping the tank with such a device allows you to constantly monitor the level of the LOCL in the ship's SATO, excluding the possibility of refueling the aircraft with fuel without the LOCL and reducing the likelihood of failure of structural elements with the ingress of the LOC into the environment, which could occur, for example, in the case of the use of glass level indicators , which together provides an increase in the reliability of the tank and the ship's SATO.

Brief Description of Drawings

Further, the utility model is described in more detail with reference to the attached drawings, in which:

in fig. 1 shows a perspective view of a reservoir for storage and dispensing of PWCI according to the utility model;

in fig. 2 is a front view of the storage and dispensing reservoir of the PACI of FIG. 1.

Implementation of the utility model

Shown in FIG. 1 and 2, the tank 1 for storage and delivery of the PWKL according to the utility model is intended for use as part of the ship's SATO, which can be placed both in the below-deck space and on the deck of the ship - on the runway or near it.

The reservoir 1 for storing and dispensing PWCI contains a cylindrical body 2 having a means 3 for receiving PWCI and means 4 for issuing PWCI, made in the form of nozzles, at the ends of which there are connecting flanges for connection to the PWCI supply line and the PWCI dispenser, respectively.

The design of reservoir 1 for storage and dispensing of PWCI provides for the possibility of supplying PWCI both using a hand pump (the main method) and gravitational supply of PWCI (backup method) from a canister for storage of PWC in case of failure of the hand pump.

According to a preferred embodiment of the utility model, the tank body 2 is made of spark-safe, non-magnetic, chemically and corrosion-resistant steel grade 12X18H10T.

According to the utility model, storage of high-density liquid liquid in reservoir 1 is carried out using the "nitrogen blanket" technology. For this purpose, the reservoir 1 is equipped with a nitrogen receiving means 5 in the form of a branch pipe with a connecting flange for connection to a nitrogen pipeline.

Such a storage system, in particular, makes it possible to reduce the evaporation of the DRCF, which is of great importance, given the toxic properties of the DRCF, and also provides the possibility of additional draining of the DRCF from the reservoir using nitrogen lifting.

The cylindrical shape of the body 2 of the reservoir 1 for storing and dispensing PWKL makes it possible to exclude the creation of stagnant zones that contribute to the accumulation of contaminants in the PACL during storage, facilitating the maintenance of the reservoir during operation, during which the inner surfaces of the body are cleaned manually using cotton napkins.

As shown in FIG. 1, the operating position of the reservoir is the position in which the reservoir body 2 is placed horizontally along the longitudinal axis (L) of the cylinder forming the body.

According to the utility model, the reservoir 1 for storing and dispensing PWCI has a hatch 6 located in one of the end walls of the body 2 of the tank 1. The hatch 6 occupies the entire end wall, that is, the hatch area is essentially equal to the area of the base of the cylinder forming the tank body. The hatch 6 is equipped with a cover 7, made with the possibility of connection (for example, bolting) with the connecting flange of the hatch 6.

The hatch 6 is intended for access to the inside of the reservoir 1 for storage and delivery of the PACL for the purpose of inspecting its internal cavity and / or cleaning by members of the ship's crew.

The reservoir 1 for storing the dispensing of the PWCZH can be equipped with a sampling device 11, designed for sampling of the PWCWH stored in the tank. In this case, the manhole cover may contain sampling pipes of the sampling device 11 so that they pass through the cover 7 and are fixed therein.

Due to this design, when the cover 7 is removed from the hatch 6, the sampling device 11 is automatically removed from the reservoir 1 and does not interfere with the work inside it.

The cover 7 of the hatch 6 may contain handles 8 located symmetrically relative to the center of the cover. In a preferred embodiment, the lid 7 comprises two handles 8. However, the lid can also contain more handles.

The presence of handles allows members of the ship's crew involved in the maintenance of the tank 1 to easily remove the hatch cover. In addition, the size and arrangement of the handles are chosen in such a way that, in its removed position, the cover can rest on the handles 8, thereby increasing the convenience of its re-installation on the hatch.

In addition, if there is a sampling device 11 in the lid, due to the possibility of supporting the lid 7 on the handles 8, it is possible to avoid damage to the pipes of the sampling device when removing the lid 6 from the reservoir 1.

According to the invention, the reservoir 1 for storing and dispensing PWCI may contain a bypass magnetic level indicator 9, intended for visual indication of the level of PWCF contained in the tank.

In this case, the bypass magnetic level indicator 9 is attached to the side wall of the reservoir 1 for the PVCL and contains a bypass chamber. The principle of operation of the 9 level magnetic indicator is based on the law of communicating vessels - the level in the bypass chamber is equal to the level of the measured liquid inside the tank. Inside the bypass chamber, together with the liquid level, a float with a built-in magnet moves, which, through the action of a magnetic field, contactlessly rotates a group of vertically arranged two-color magnetic rollers located on the outer surface of the chamber. When the level of PVCL in the tank rises, the rollers turn with the red side outward, when lower, the white side outward. Thus, the height of the row of rollers, turned with the red side outward, is an indicator of the level of the PACI in the tank.

The design and mode of operation of magnetic level indicators are known per se from the prior art.

The bypass magnetic level indicator 9 may comprise a limit switch 10 shown in FIG. 2.

The limit switch 10 can be a reed limit switch, the operation of which is based on the interaction of a magnet located in the float of the bypass magnetic level indicator 10 and a reed switch located in the body of the limit switch 10. When the float moves along the limit switch, a magnetic field acts on the reed switch, switching occurs contacts of the reed switch and, as a consequence, the closing or opening of the control circuit, which is a signal of the "dry contact" type.

The limit switch 10 of the bypass magnetic level indicator 9 can be electrically connected to the control circuit of the operation of the fuel transfer pump of the ship's SATO.

The limit switch 10 is installed in the lower part of the bypass magnetic level indicator 9 at a level corresponding to the predetermined level of the PVKZH in the tank, below which the PVKZH ceases to flow to the PVKZh dispenser connected to the reservoir's PVKZh dispenser. When the level of the fuel transfer pump in the tank drops below a predetermined value, the limit switch 10 is triggered and a signal is issued to the control circuit of the fuel transfer pump to turn it off, as a result of which the fuel supply to the aircraft is stopped.

If necessary, the corresponding signals can be fed to the automated control system (ACS) SATO with display on the operator's panels of emergency lower liquid levels and emergency shutdown pumps.

By equipping the reservoir 1 for storage and delivery of PWCZH with a bypass magnetic level indicator 9, it becomes possible to use limit switches 10, which are signaling devices for controlling the SATO ship system, in particular, the operation of the fuel transfer pump. Turning off the fuel transfer pump of the SATO marine system when the level of the SATO drops below a predetermined value makes it possible to stop the fuel supply and, thereby, to exclude the possibility of refueling the aircraft with fuel without the SATO. At the same time, it is also possible to visually indicate the level of the liquid in the tank 1 throughout its operation without the risk of failure of fragile structural elements and the ingress of toxic PVCL into the environment, which could take place, for example, in the case of using glass level indicators, which in the aggregate, it improves the reliability of the ship's SATO.

Thus, the bypass magnetic level indicator equipped with a limit switch in the reservoir for the PWCS becomes a control element of the ship's SATO alarm system, making it possible to effectively maintain the safety of the main technological operations at the highest level and ensure the reliability of the ship's SATO.

It is clear from the above description of the reservoir for the PVCL according to the invention that all of its components are connected to each other by assembly operations by means of known fastening means and are in functional and structural unity.

Inspection and / or maintenance of the tank is carried out by accessing the tank through the hatch 6, from which the cover 7 is previously removed. Due to the horizontal arrangement, the cylindrical shape and the large area of the opening of the technological hatch, members of the ship's crew can quickly and easily gain access to the inside of the tank, as well as access to a set of equipment that may be needed during its inspection, repair and cleaning. This increases the speed and efficiency of tank maintenance.

Claims (4)

1. A reservoir (1) for storing and dispensing anti-water crystallization liquid (DSCF) for a ship's aviation fuel supply system, containing a cylindrical body (2) with a means (3) for receiving PACF, a means (4) for issuing PACF and a means (5) for receiving nitrogen, and a hatch (6) with a cover (7) for access to the inside of the tank, while the operating position of the tank is the position in which the tank body (2) is placed horizontally along the longitudinal axis (L) of the cylinder forming the body, characterized in that the hatch is located on one of the end the walls of the body (2) over the entire area of the end wall. 2. The tank (1) according to claim 1, characterized in that the body (2) is made of corrosion-resistant steel grade 12X18H10T. 3. The reservoir (1) according to claim 1 or 2, characterized in that the cover (7) of the hatch (6) contains a sampling device (11). 4. The reservoir (1) according to any one of paragraphs. 1-3, characterized in that the cover (7) of the hatch (6) contains handles located symmetrically relative to the center of the cover, while the cover is designed to support the handles in its removed position.

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