RU224567U1 - PNEUMATIC LOCKING DEVICE OF A RAILWAY TANK CAR DRAIN DEVICE - Google Patents

Abstract

The utility model relates to the field of transportation of oil cargo by rail, as well as unloading and unloading operations performed with railway tanks at storage and processing facilities for oil and petroleum products. The technical problem to be solved by the claimed utility model is the development of a pneumatic shut-off device for the drainage device of railway tank cars transporting light petroleum products, in order to increase the tightness of the drain system and create the technical possibility of emptying tanks with a faulty bottom valve through the bottom drain. The problem is solved by the fact that the claimed pneumatic shut-off device consists of a sealant made in the form of a cylindrical shell made of oil-resistant, rubberized fabric and an air supply tube equipped with a ball valve, which are connected to each other by means of a through fitting mounted in the body of the bottom valve. The advantage of the proposed device is its reliability, achieved due to the absence of the influence of vibration and other mechanical factors on the state of tightness, due to the fact that it is provided with medium-pressure filled air. In addition, this device expands the technical possibility of emptying tank cars with a faulty bottom valve using the standard bottom drain method.

Description

The utility model relates to the field of transportation of oil cargo by rail, as well as unloading and unloading operations performed with railway tanks at storage and processing facilities for oil and petroleum products.

A drainage device for a railway tank is known (Patent No. 2641365 C1 Russian Federation, IPC B61D 5/00, B65D 90/54. A drainage device for a railway tank: No. 2016135551: application 09/01/2016: publ. 01/17/2018 / S.E. Goncharov, A.N. Kemezh, I.S. Lyndin; applicant Joint Stock Company "First Freight Company"), containing a cylindrical body, in the upper part of which a main gate with a drive mechanism is installed, and in the lower part of the body there is an additional gate in the form covers with a seal and a clamping screw, characterized in that the cylindrical body consists of two connected parts, between which a safety ring is installed, the main shutter is installed on the thrust rod of the drive mechanism with the possibility of its free rotation in a detachable coupling and consists of two sequentially located one below the other valves, the top of which is a spring poppet valve designed to block the upper end part of the drain hole, and the valve located below it is a shut-off valve in the form of a truncated cone, designed to block the flow area of the body.

The device works as follows: to drain the liquid cargo, unscrew the clamping screw and move aside the rotary bracket with an additional shutter installed on it in the form of a lid with a seal, then connect the oil product drainage device. Next, open the inlet neck cover to gain access to the thrust-drive mechanism rod. After which, by rotating the rod, it moves and lifts the spring poppet valve, as well as the shut-off valve, made in the form of a truncated cone, as a result of which the drain hole in the upper end part of the housing and the flow section of the housing open, respectively, and the cargo is drained from the tank. To bring the tank into working condition, close the main and additional valves.

The disadvantage of this device and others like it is the vulnerability of locking mechanisms when transporting petroleum products over long distances, expressed in low tightness formed as a result of vibration effects that occur during the movement of trains, as well as their coupling or uncoupling. The current deficiency leads to the accumulation of petroleum products in the drain pipe of the tank with their subsequent spill during authorized or accidental opening of the pipe covers on overpasses or when driving on public roads.

The closest technical solution, chosen as a prototype, is a flexible liner for transporting goods in railway tank cars (Patent No. 2670372 C2 Russian Federation, IPC B61D 39/00, B65D 88/16, B61D 5/00. flexible liner for transporting goods in railway tank cars: No. 2017110770: application 03.30.2017: published 10.22.2018 / V.D. Bogachev, A. N. Lutsenko, A.N. higher education "Pacific State University") made of film material in the shape of a cylinder of size corresponding to the internal dimensions of the vehicle, on the inner side of which there are interconnected horizontal and vertical air channels, a loading sleeve located in the upper part of the container and made with cutouts in the upper part, the dimensions of which correspond to the dimensions of the fastening and locking elements of the tank hatch cover, an inlet/outlet air duct with a shut-off valve at the inlet, which is installed inside the loading sleeve with the possibility of communication with the horizontal air channel of the container, and a drain cone located in the lower part of the liner container, in this case, all parts of the liner are hermetically connected to each other, and the loading sleeve is fixed to the hatch of the tank car using a locking device.

The device works as follows: the liner is placed through the hatch in the tank car, so that the drain rod of the tank car is placed inside the additional sleeve. Then the loading hose is secured to the hatch of the tank car using a fixing device, and the additional hose is secured to the top of the drain rod of the tank car, after which the shut-off valve of the inlet/outlet air duct is opened and the incoming air fills first the horizontal and then the vertical air ducts. channels. As a result, the liner container inflates, filling the volume of the tank car and then the shut-off valve is closed. Next, the transported liquid is poured into the liner container through the loading sleeve, after filling the volume 3/4, the shut-off valve is opened and under the pressure of the filling liquid, air is forced out of the air channels. After the tank volume is filled to the required standard, the hatch is closed and the cargo is transported to the unloading site.

The main disadvantage of this prototype is the need to constantly replace the liner before each loading of petroleum products into a railway tank, which, in the case of numerous and continuous transportation, requires significant financial investments. In addition, the large time costs of placing the liner and bringing it into working condition have a negative impact on the organization of cargo transportation due to the strictly standardized time of loading and unloading operations.

The technical problem to be solved by the claimed utility model is the development of a pneumatic shut-off device for the drainage device of railway tank cars transporting light petroleum products, in order to increase the tightness of the drain system, as well as create the technical possibility of emptying tanks with a faulty bottom valve through the bottom drain.

The problem is solved by the fact that the claimed pneumatic shut-off device consists of a sealant made in the form of a cylindrical shell made of oil-resistant, rubberized fabric and an air supply tube equipped with a ball valve, which are connected to each other by means of a through fitting mounted in the body of the bottom valve.

The essence of the utility model is illustrated by the drawings presented in Fig. 1 and fig. 2. In FIG. 1 shows a schematic drawing of a pneumatic locking device. In fig. Figure 2 shows a model of a pneumatic shut-off device for a drainage device in working condition.

The device operates as follows: after pouring oil into the tank car 1 and checking that there are no leaks from the lower pipe of the drain device 2, the operating personnel brings the pneumatic shut-off device into working condition by filling the rubberized sealant 3 with technical air supplied from a standard source (compressor). through tube 4, which are connected to each other by a rigid coupling on one side and a flexible one on the other through a through fitting 5, mounted in the bottom valve of the drain device 6. When the compressor creates a pressure of 2.5 kg/cm ² inside the sealant shell, it expands and, accordingly, sealing the drain pipe according to the plugging principle. Upon reaching the above pressure, the air supply is automatically interrupted by a relay installed on the compressor and then the ball valve 7 is closed manually by personnel.

After the railway tank is supplied to the loading front, the personnel, having completed all the necessary preparatory measures before draining, opens the ball valve 7 and releases air from the system, while releasing the sealant, and opens this valve 6, which rises simultaneously with the sealant and tube attached to it , thereby freeing up the flow area of the pipe for further implementation of the drainage procedure.

The advantage of the proposed device is its reliability, achieved due to the absence of the influence of vibration and other mechanical factors on the state of tightness, due to the fact that it is provided with medium-pressure filled air.

In addition, this device expands the technical possibility of emptying tank cars with a faulty bottom valve using the standard bottom drain method.

Claims (1)

A pneumatic shut-off device for the drainage device of a railway tank car, consisting of a sealant made in the form of a cylindrical shell made of oil-resistant, rubberized fabric and an air supply tube equipped with a ball valve, which are connected to each other by means of a through fitting mounted in the body of the bottom valve.