RU226658U1 - Mounting unit for the cover to the foam generator body - Google Patents

Abstract

The utility model relates to devices designed to ensure fastening of the cover to the body of the foam generator, and can be used, for example, in fire fighting equipment, namely in the design of medium expansion foam generators used in fire extinguishing installations of tanks, buildings, structures, technological sites and other objects. The assembly for attaching the cover to the foam generator body contains a hinge and a retainer installed on the foam generator containing the body and the cover. The latch is made in the form of a latch body installed on the upper inner part of the foam generator body, and a tongue installed on the lid to enable engagement with the latch body when the lid is closed. The lock housing also contains spring-loaded bolts installed on both sides, installed to ensure fixation of the tongue when the lid is closed, and contains adjusting screws installed on both sides to allow adjustment of the force of action of the spring-loaded bolts on the tongue. The technical result is expressed in increasing the reliability of the foam generator. 2 salary f-ly, 3 ill.

Description

The utility model relates to devices designed to ensure fastening of the cover to the body of the foam generator, and can be used, for example, in fire fighting equipment, namely in the design of medium expansion foam generators used in fire extinguishing installations of tanks, buildings, structures, technological sites and other objects.

There is a known unit for attaching the cover to the body of the foam generator [RF Patent for invention No. 2404831, IPC A62S 31/12, z. 07/20/2009, op.11/27/2010], adopted as a prototype. This unit ensures the fixation of the cover on the foam generator body in the closed position and makes it possible to open this cover by exposure to the working fluid during operation of the foam generator. The assembly for attaching the cover to the foam generator body contains a hinge consisting of two lugs installed on the lower outer part of the foam generator body, pivotally connected to the counter lugs installed on the cover. Fixation of the cover in the closed position is ensured by a lock in the form of a rod connecting the cover and the body. The rod is made adjustable in length by means of a stud with a nut, which makes it possible to adjust the force of pressing the cover to the body due to the force created by rotating the nut along the thread of the stud. In this case, the nut with its end surface rests against the fork of the lever system installed inside the housing. Near the pin, a limiter for the opening angle of the lid, made in the form of a cable, is attached to the rod. The length of the cable and its location, adjusted by a pin together with the lock rod, determine the angle at which the lid opens relative to the closed position. The disadvantages of the prototype are:

1. The inability to adjust the force of opening the lid, which creates the risk that when the foam generator is operating, the lid will not open or will open untimely, which leads to a decrease in the reliability of the foam generator.

2. Reduced force of pressing the lid to the body due to an increase in the working length of the locking rod with a pin under the influence of external operational factors (temperature, vibration, periodic opening/closing of the lid during maintenance), as a result of which the lid is not tightly closed and gas-air can enter mixture, for example, oil vapor contained in a tank, into the body of the foam generator with subsequent separation of oil from the gas-air environment and settling of oil on the foam generator units located inside the body, which can lead to jamming of the elements responsible for opening the lid, which creates the risk that When the foam generator is operating, the lid will not open or will not open in a timely manner, that is, the reliability of the foam generator will decrease.

3. Possibility of jamming of the lid opening angle limiter cable due to the influence of the foaming agent, because The entire limiter mechanism is located inside the housing, which creates the risk that when the foam generator is operating, the lid will not open or will open partially, that is, the reliability of the foam generator will decrease.

The technical problem is to create a unit for attaching the cover to the body of the foam generator, ensuring a high degree of reliability of the foam generator.

The technical result is expressed in increasing the reliability of the foam generator.

The specified technical result is achieved in that the attachment of the cover to the foam generator body contains a hinge and a latch mounted on a foam generator containing a body and a cover, and the latch is made in the form of a latch body mounted on the upper inner part of the foam generator body and a tongue mounted on the cover with the provision possibility of engagement with the latch body when the lid is closed, wherein the latch body contains spring-loaded bolts installed on both sides, installed to ensure fixation of the tongue when the lid is closed, and the latch body contains adjusting screws installed on both sides to allow adjustment the force of action of the spring-loaded crossbars on the tongue.

The hinge can be made in the form of lugs installed on the lower inner part of the foam generator body and a bracket pivotally connected to the lugs and mounted on the cover.

The bracket can be designed to allow the lid to open at an angle of at least 90 degrees relative to the closed position.

The claimed utility model is illustrated in Fig. 1-3. In fig. 1 shows a general view of the attachment of the cover to the body of the foam generator in the position of the foam generator with the cover closed (isometry with a local section); in fig. 2 - section of the latch body in the position of the foam generator with the lid closed (isometric); in fig. 3 - general view of the attachment of the cover to the body of the foam generator in the position of the foam generator with the cover open (isometry with a local section).

The assembly for attaching the cover to the foam generator body contains a hinge and a retainer installed on a foam generator containing a body 1 and a cover 2 (Fig. 1, 2, 3), for example, on a medium expansion foam generator intended for use in fire extinguishing installations for tanks with oil or petroleum products. The hinge consists of two eyes 3 (Fig. 1, 3), installed on the lower inner part of the body 1 of the foam generator and pivotally connected to the eyes 3 of the bracket 4, which is mounted on the cover 2. The bracket 4 is pivotally connected to the eyes 3, for example, by means of metal axes (not shown), installed in the holes of the corresponding eye 3 and bracket 4. The metal axes are secured against axial movement, for example, with nuts. The design of the bracket 4 makes it possible to open the cover 2 at an angle of at least 90 degrees relative to the closed position for the most unimpeded exit of foam from the foam generator during the fire extinguishing process. In addition, due to the location of the hinge inside the body of the foam generator, its performance is not negatively affected by vapors and larger particles of oil contained in the tank.

Thus, the hinge provides a reliable connection between the cover 2 and the body 1 of the foam generator with the ability to open and close the cover 2.

The latch consists of a latch body 5 and a tongue 6 (Fig. 2, 3). The housing 5 of the clamp is installed on the upper inner part of the housing 1 of the foam generator. The tongue 6 is installed on the cover 2 so that it can engage with the latch body 5 when the cover 2 is closed. In addition, the latch body 5 contains bolts 7 installed on both sides, spring-loaded by means of compression springs 9 (Fig. 2).

The crossbars 7 are installed inside the latch body 5 to ensure fixation of the tongue 6 when the cover 2 is closed. Also, adjusting screws 8 are installed on both sides of the latch body 5 (Fig. 2). Each adjusting screw 8, by acting on the corresponding compression spring 9, provides the ability to adjust the force of action of the corresponding spring-loaded bolt 7 on the tongue 6. Thus, the latch ensures reliable retention of the cover 2 and the body 1 of the foam generator in the closed position provided for by the design of the foam generator, without the need to adjust the pressure of the cover 2 to the end of the body 1 of the foam generator.

The assembly for attaching the cover to the foam generator body works as follows.

Before installing the foam generator at the operating site, adjust the clamp. By means of the adjusting screws 8 (Fig. 2), the force that must be applied to the cover 2 to open it during the start of fire extinguishing is adjusted. This force is indicated in the operational documentation and depends on the design features of the foam generator and the parameters of the fire pipeline of the operating facility. Thus, when the adjusting screw 8 is unscrewed from the body 5 of the latch, the pressure of the corresponding compression spring 9 is weakened and the force of action of the spring-loaded bolt 7 on the tongue 6 is reduced. When the adjusting screw 8 is screwed into the body 5 of the latch, the force of action of the corresponding spring-loaded bolt 7 on the tongue 6 increases.

By opening and closing the lid 2, the operation of the hinge is checked to ensure that the lid 2 is opened at an angle provided by the design, for example, at least 90 degrees relative to the closed position to ensure the most unimpeded exit of foam from the foam generator during the fire extinguishing process.

The foam generator is installed on a tank, for example, with oil, and the foam generator is connected to the fire pipeline of the operating facility (not shown).

Thanks to the latch, during normal operation of the tank the foam generator is in a position in which the lid 2 fits tightly to the end of the body 1. In this position, the internal cavity of the foam generator is isolated by the lid 2 from the internal cavity of the tank.

When fire extinguishing is carried out, the foam generator begins to work, as a result of which, from the impact of the foam flow on the cover 2, or from the impact of the rod extended by the supplied foam solution (depending on the design of the foam generator), the tongue 6 overcomes the force of the spring-loaded crossbars 7 and disengages from the body 5 the latch and the lid 2 opens through the hinge.

Thus, the attachment of the cover to the foam generator body ensures reliable fixation of the cover 2 to the end of the foam generator body 1, and when fire extinguishing begins, it ensures the timely complete opening of the cover 2, resulting in increased reliability of the foam generator.

Claims (3)

1. A unit for attaching the cover to the body of the foam generator, containing a hinge and a latch installed on the foam generator containing the body and the cover, characterized in that the latch is made in the form of a latch body mounted on the upper inner part of the foam generator body, and a tongue installed on the cover with the provision possibility of engagement with the latch body when the lid is closed, wherein the latch body contains spring-loaded bolts installed on both sides, installed to ensure fixation of the tongue when the lid is closed, and the latch body contains adjusting screws installed on both sides to allow adjustment the force of action of the spring-loaded crossbars on the tongue. 2. The unit according to claim 1, characterized in that the hinge is made in the form of lugs installed on the lower inner part of the foam generator body, and a bracket pivotally connected to the lugs and mounted on the cover. 3. The unit according to claim 2, characterized in that the bracket is designed to allow the lid to be opened at an angle of at least 90 degrees relative to the closed position.

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