RU2477851C1 - Sampling box of high-toxicity materials from sealed chamber, and sampling device - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: sampling box includes a cylindrical metal housing with a connection flange for tight attachment to the neck of the chamber closed from inside with a cover plate. An inspection hole with a pair of gloves built into it is fixed inside the housing. The box includes a connection pipe for tight attachment of sampling device an a connection pipe with a circuit board having electric connectors, which are located on the housing wall between the connection flange and the inspection hole. Besides, the box is equipped with a chamber opening device containing a screw inserted in a threaded hole of the housing flange, and a pin located opposite the screw and installed in the chamber cover plate. Sampling device includes a shell and tight covering of inner cavity of the shell, which is made in the form of two removable cover plates installed above each other. Cover plates are connected to each other by means of a fastener; at that, top cover plate is equipped with a device for detachable attachment to the box housing connection pipe from inside the housing, and bottom cover plate is attached to the shell by means of a detachable connection.

EFFECT: localisation of opened cavity of the tight chamber against environmental impact.

16 cl, 4 dwg

Description

The invention relates to the field of special equipment related to safety during the selection of highly toxic environmentally hazardous products from a sealed chamber.

A well-known laboratory box (St. RF No. 26447, B01L 1/04, publ. 10.12.2002), containing a camera mounted on a stand with viewing windows, a transfer lock and built-in gloves, air supply units and technological reagents, an air purification and ventilation system. The box is equipped with power supply and control systems, bactericidal and fluorescent lamps, equipment for sample preparation for analysis, processing and collection of waste, equipment fastening devices and is installed on a mobile device with a cab and a van body. Boxing is used as a mobile mobile laboratory for carrying out specific tests to identify pathogens of various infectious diseases with minimal risk of infection to laboratory personnel.

The disadvantage of this laboratory box is that it is not intended for sampling from sealed chambers that require a tight connection of the box to the chamber, opening the chamber and taking highly toxic environmentally hazardous products from it, followed by their placement in a special container.

Known laboratory box (AS USSR No. 603425, B01L 1/04, publ. 04/25/1978), containing a housing with a viewing window and nozzles for gloves. The rear wall of the housing is made with a window equipped with a check valve, a filter for cleaning the air removed from the box, including filter elements mounted on a removable plate, a regeneration device consisting of a receiver and an electromagnetic valve. Collected dust is collected in a pan, which is removed into the internal cavity of the box through a removable louvre grill. To supply technological reagents to the box, control valves are placed on its side wall of the housing. Boxing is used as a laboratory cabinet designed to work with highly toxic or radioactive substances, and can be used to protect workers from highly toxic substances or radioactive isotopes.

The disadvantage of this laboratory box is that it is not intended for sampling from sealed chambers that require a tight connection of the box to the chamber, opening the chamber and taking highly toxic environmentally hazardous products from it, followed by their placement in a special container.

A device for sampling material (p. RF No. 21114410, G01N 1/08, publ. 06/27/1998), containing a hollow cylinder, open at the base and restricting the open cavity in communication with the means forming the exhaust channel. At the base of the hollow cylinder, means for overlapping the selected material, made in the form of elastic membranes, are installed. The device has one hollow rod connected in the upper part to the external cylinder and at the level of the upper part of the external cylinder with an exhaust channel and connected in its lower part to the stationary piston. The device has a pressure chamber in which the cylinder for sampling is mounted with the possibility of movement and at least one hole made in the hollow rod in its lower part, communicating with the cavity of the cylinder for sampling. The device is equipped with means located in the upper part of the external cylinder, connected, on the one hand, to a power source and, on the other hand, to an outlet for supplying a fluid under pressure to a pressure chamber to ensure movement of the hollow cylinder for sampling to the sampling and discharge fluid when lowering the outer cylinder to the hollow cylinder for sampling.

This device is not suitable for taking samples from airtight chambers containing highly toxic environmentally hazardous products.

The closest in design is a container for transporting and / or storing radioactive materials (Cl. RF No. 2157009, G21F 5/005, publ. 09/27/2000), containing a sealed closure of the inner cavity of the container, made in the form of at least two removable protective covers installed one above the other and forming sealing circuits with the housing with the formation of cavities, each of which is made with a channel for communication with the device for tightness control (UKG). A blind hole is made in the housing from the outside, which is hermetically closed by an additional removable cover (SC) with the formation of an additional cavity under it, with which the said channels are connected. An additional SC forms sealing circuits with the housing with the formation of another cavity, which is made with a channel for communication with the UKG. In an additional SC, an additional branched channel is made for communication of the additional cavity with the UKG.

This device is intended for transportation and / or storage of radioactive materials, but is not suitable for connection to a sealed chamber containing highly toxic environmentally hazardous products, in order to take samples from it.

The problem to be solved is the creation of a device that allows opening an airtight chamber containing highly toxic environmentally hazardous products, taking samples of these products and then placing them in an airtight sampler, while ensuring environmental safety requirements by localizing the open chamber cavity from the environment.

The specified technical problem is solved in that the box for sampling highly toxic materials from the sealed chamber contains a metal cylindrical body with a connecting flange containing a sealing element for hermetic fastening to the chamber neck, a lid closed from the inside, an inspection window fixed with a pair of gloves built into it tightly inside the case located on the wall of the housing between the connecting flange and the inspection window of the pipe for tight mounting of the sampler and pipe with LaToya having electrical connectors, box provided with means for opening the chamber comprising a screw wrapped in a threaded hole of the flange body and disposed opposite the screw pin mounted in the lid of the chamber.

In the area between the connecting flange and the viewing window of the box body, a video camera, a backlight device and a tool shelf are installed inside it.

The pipe for securing the sampler may also have a stuffing box made, for example, of felt or bristles.

The box body may also have a flange with mounting holes for installing a hermetically sealed protective cover on it.

In the embodiment of the box, the inspection window both on the outside and on the inside has elements for attaching gloves, consisting of profile metal rings, which are mounted coaxially relative to the holes for gloves, pressure rings and fasteners available in the inspection window, for example screws.

The sampler contains a glass, a sealed overlap of the internal cavity of the glass, made in the form of two removable covers installed one above the other, the covers are interconnected by a latch, while the top cover is equipped with a detachable attachment to the pipe of the box body from the inside of the case, and the bottom cover is attached to the glass by detachable connection. The glass has a flange with holes for mounting it from the outside of the pipe of the box body using fasteners, for example, studs screwed into threaded holes located on the end surface of the pipe, and nuts screwed onto the studs.

The glass on the outer cylindrical surface has annular grooves in which the sealing elements are installed.

The latch is installed in the hole located in the center of the upper cover using hermetic elements installed in the annular grooves of the latch rod.

Removable covers are interconnected hermetically by means of a sealing element, which is installed in an annular groove at the end of the top cover.

The top cover has a turn-key flange on the outer end surface in the center, and a blind hole for the pin installed in the blind hole on the outer end surface of the bottom cover on the inner end surface.

The top cover is sealed to the pipe using a sealing element, which is installed in an annular groove at the end of the top cover.

The bottom cover is sealed to the glass using a sealing element that is installed in the annular groove of the bottom cover.

The device for detachable fastening of the top cover to the nozzle of the box body consists of a ring with mounting holes mounted on the outer end surface of the top cover and mounted on the nozzle of the box by means of studs and nuts.

The implementation of the box in the form of a cylindrical metal case with a connecting flange for tight mounting to the neck of the camera, as well as the presence of a viewing window inside the box body with a pair of gloves built into it, allows, after attaching the box to a chamber containing highly toxic materials, to ensure that the lid is opened, installed on the neck, without violating environmental safety requirements. The work is done with two hands using boxing gloves and is open for visual review.

The presence in the zone between the connecting flange and the inspection window of the box on the wall of the body of the pipe with a gland element and a pipe with a board having electrical connectors allows you to respectively connect a sampler and cables for electrical activation of the equipment located in the box to the box and display information transmitted from the equipment to an external receiver. The stuffing box element of the nozzle protects the outer cylindrical surface of the sampler from contamination with highly toxic chamber materials.

The implementation of the box with a device for opening the chamber, containing a screw wrapped in the threaded hole of the housing flange and a pin located opposite the screw, mounted in the chamber cover, allows the camera to be opened after removing the fasteners of the chamber cover by unscrewing the screw until it stops in the pin and then completely unscrewing it pin from the cover.

Placing in the zone between the connecting flange and the viewing window of the box body inside it a video camera, a backlight device and a tool shelf allows you to open the camera, determine the fragments of highly toxic materials necessary for taking from the camera, and place them in the sampler.

The presence in the box of a viewing window with elements for attaching gloves located both on the outside and on the inside allows you to replace it with a new glove in case of damage to the glove. The new glove is mounted on the outside of the viewing window, while the damaged glove is cut to the required length and left inside the box.

The presence on the box body of a flange with mounting holes for installing a hermetically protective cover on it allows to increase the reliability of ensuring the tightness of the box during long-term storage, and also protects the box from unauthorized use.

The implementation of the sampler in the form of a glass having a flange with fixing holes on the outer cylindrical surface and sealing elements installed in the annular grooves, allows the glass to be sealed in the nozzle of the box housing and secured to the nozzle using fasteners, for example, studs screwed into the threaded holes nozzle, and nuts screwed onto studs.

Hermetic closure of the inner cavity of the glass with a removable lid using a sealing element installed in the annular groove of the lid provides the required tightness of the sampler with highly toxic materials.

The presence of a second (upper) removable lid on the sampler, which is sealed to the glass lid using a sealing element located in the annular groove of the upper lid, fixing the lids to each other with a latch hermetically installed in the central hole of the upper lid, fixing the lids from turning relative to each other using a pin installed between the covers, as well as the presence of turnkey flats on the protrusion of the upper end surface of the outer cover allows:

- remove and install the bottom cover on the glass without disconnecting the covers by rotating the top cover with a key. When performing this work in a box mounted on the camera, the outer surfaces of the bottom cover are protected from possible contamination with highly toxic materials when placed in a glass;

- to undock (sampler) from the box by separating the lids by turning the latch out of the lid of the glass, while the sampler is squeezed out of the nozzle by the amount of length of the screwed part of the latch.

Performing detachable fastening of the upper cover of the sampler to the box nozzle in the form of a ring with mounting holes mounted on the outer end surface of the cover of the cap allows tight sealing of the top cap to the nozzle using the sealing element of the top cap by fastening the ring with the studs on the end surface of the nozzle and nuts . When undocking the sampler from the box, the top cover remains inside the box body, ensuring the tightness of the cavity.

Figure 1 shows a General view of the box with the sampler in the context; figure 2 shows a view of the box with the pipe side, view A of figure 1; figure 3 shows a section of a box with a sampler, section bB in figure 1; figure 4 shows an option for installing gloves on the inspection window from the outside.

Boxing consists of:

a) a cylindrical metal housing 1 having a connecting flange 2 with sealing elements 3, a flange 4 with mounting holes for installing a protective cover, a pipe 5 with an stuffing box 6 and a pipe 7 with a board 8 having electrical connectors 9;

b) a viewing window 10 with a pair of gloves 11 that are mounted on metal profile rings 12 and secured by a pressure ring 13 and screws 14;

c) video cameras 15;

d) backlight device 16;

d) shelves for the tool 17;

e) a device for opening the chamber 18 having a screw 19, wrapped in a threaded hole of the flange 2, and a pin 20 installed in the lid of the chamber;

g) a sampler 21, containing:

1) a glass 22 with sealing elements 23;

2) the top cover 24 with the sealing element 25;

3) a cover 26 with a sealing element 27;

4) the latch 28 with the sealing elements 29;

5) pin 30;

6) a detachable fastening device, consisting of a ring 31, studs 32 and nuts 33;

7) studs 34 and nuts 35;

i) a fastener 36.

The box is mounted on the neck of the chamber with fasteners 37, for example, bolts with washers.

The intended use of the box is as follows:

- before installing the box on the camera containing highly toxic environmentally hazardous products, successively replace the fasteners of the camera cover and install new fasteners 36, while the number of new fasteners 36 is set in the minimum required quantity with the minimum allowable screwing depth. Install in the mounting hole of the camera cover, which will be opposite the screw 19 of the box, the pin 20 of the device for opening the camera;

- interconnect the covers of the sampler 21, the top cover 24 and the cover 26 using the latch 28 and the pin 30. The connected covers are placed in a polyethylene cover, the cover is welded;

- in the outer threaded holes of the pipe 5 is wrapped until the stud stud 34;

- install in the pipe 5 using the studs 34 and nuts 35 glass 22 of the sampler 21;

- studs 32 are installed in the threaded holes of the pipe 5 inside the housing 1;

- install the camcorder 15, the backlight 16 and the shelf 17 on the mounting flange 2 of the housing 1;

- dock to the electrical connectors 9 cables of the video camera 15 and the backlight 16;

- install the screw 19 in the threaded hole of the connecting flange 2 of the housing 1 of the box;

- packed in a cover polyethylene nuts 33 and the ring 31 of the device detachable fasteners, the cover is welded and placed on the shelf 17;

- the covers 24 and 26 packaged in the case are placed on the shelf 17;

- place in the housing 1 on the shelf 17 the tool necessary for opening the camera and sampling from it;

- raise the housing 1 of the box and dock it using the connecting flange 2 with the neck of the chamber;

- fastening the box to the neck of the chamber is performed using fasteners 37, for example, bolts with washers. The tightness of the connection is provided by the sealing elements 3;

- connect outside the box to the connectors 9 harnesses that go to power sources and receiving equipment;

- dismantle the fasteners 36 of the camera cover;

- turn the screw 19 until it stops in the pin 20. Then, the pin 20 is completely turned out of the camera cover, while the camera cover opens slightly;

- open the lid inside the camera body;

- include a video camera 15 and a backlight 16;

- conduct an examination of the internal cavity of the camera using the camera 15 and visual observation through the viewing window 10 in order to determine fragments of materials for sampling;

- using a tool to conduct sampling and place them in a glass 22;

- install on the glass 22 lid 26 connected to the lid 24;

- unscrew the nuts 35 by 2-3 turns;

- install the ring 31 on the studs 32. Turning the nuts 33, tighten the top cover 24 to the nozzle 5 with the ring 31;

- dismantle the nuts 35;

- rotation of the latch 28 disconnects the lid between each other, while the sampler 21 is extruded from the pipe 5 by a distance equal to the length of the threaded part of the latch 28;

- install in the existing threaded holes in the flange of the glass 22 of the sampler 21 squeezing technological bolts (screws) and squeeze the sampler 21 from the pipe 5, while under the pipe 5 with the sampler 21 lead a sealed cover. After placing the sampler 21 in the case, the case is tied and packaged in a special container;

- disconnect the harnesses from the connectors 9 outside the box;

- install the plugs on the nozzles 5 and 7, and on the flange with mounting holes 4 of the housing 1 hermetically install a protective cover.

Claims (16)

1. A box for sampling highly toxic materials from an airtight chamber, comprising a cylindrical metal case with a connecting flange for tightly attaching to the neck of the chamber, closed from the inside with a lid, a viewing window fixed inside the case with a pair of gloves built into it, located on the wall of the case between the connecting flange and a viewing window a pipe for tightly mounting the sampler and a pipe with a board having electrical connectors, the box is equipped with a device for opening the chamber, with containing a screw, wrapped in a threaded hole in the housing flange, and a pin located opposite the screw, mounted in the chamber lid. 2. Boxing according to claim 1, characterized in that in the area between the connecting flange and the viewing window of the box body, a video camera is installed inside it. 3. The box according to claim 1, characterized in that in the area between the connecting flange and the viewing window of the box body, a backlight device is installed inside it. 4. The box according to claim 1, characterized in that in the area between the connecting flange and the viewing window of the box body, a tool shelf is installed inside it. 5. Boxing according to claim 1, characterized in that the pipe for securing the sampler has a stuffing box made, for example, of felt or bristles. 6. Boxing according to claim 1, characterized in that the housing has a flange with mounting holes for installing a hermetically protective cover on it. 7. Boxing according to claim 1, characterized in that the inspection window, both from the outside and from the inside, has elements for attaching gloves, consisting of shaped metal rings that are mounted coaxially with respect to the glove openings, pressure rings and fasteners, such as screws. 8. A sampler containing a glass, a sealed overlap of the internal cavity of the glass, made in the form of two removable covers installed one above the other, characterized in that the covers are interconnected by a latch, while the top cover is equipped with a detachable attachment to the pipe of the box body from the inside of the case, and the bottom cover is attached to the glass through a detachable connection. 9. The sampler according to claim 8, characterized in that the glass has a flange with holes for fastening from the outside of the nozzle of the box body using fasteners, for example, studs screwed into threaded holes located on the end surface of the nozzle, and nuts screwed onto the studs . 10. The sampler according to claim 8, characterized in that the glass on the outer cylindrical surface has annular grooves in which the sealing elements are installed. 11. The sampler according to claim 8, characterized in that the latch is installed in the hole in the center of the upper cover hermetically using sealing elements installed in the annular grooves of the latch rod. 12. The sampler according to claim 8, characterized in that the removable lids are interconnected hermetically by means of a sealing element, which is installed in an annular groove at the end of the upper lid. 13. The sampler according to claim 8, characterized in that the top cover has a turn-key flange on the outer end surface in the center, and a blind hole for the pin installed in the blind hole on the end surface of the lower cover on the inner end surface. 14. The sampler according to claim 8, characterized in that the top cover is sealed to the pipe using a sealing element, which is installed in the annular groove at the end of the top cover. 15. The sampler according to claim 8, characterized in that the bottom cover is sealed to the glass using a sealing element that is installed in the annular groove of the bottom cover. 16. The sampler according to claim 8, characterized in that the device for detachable fastening of the top cover to the nozzle of the box body consists of a ring with mounting holes mounted on the outer end surface of the top cover and connected to the box nozzle by means of studs and nuts.

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