RU2788819C1 - Method for testing technological modules of deep-sea submersibles for internal pressure using a stand for testing technological modules of deep-sea submersibles for internal pressure - Google Patents

Abstract

FIELD: technological modules productionю

SUBSTANCE: invention relates to the production of technological modules (TM) of deep-sea submersibles, namely, to technology and equipment for hydraulic testing of cylindrical shells for strength against shear forces (in the cross section of the shell) and from normal tensile stresses (in the longitudinal section of the shell). In the method for testing TM for internal pressure, two technological frames (TF) are welded on the outer and inner surfaces of the TM at a distance of at least 200 mm from each end. Then, the basic axis of the TM is adjusted by optically pointing the targets relative to each other, which are mounted on shergens in the end sections of the internal cavity of the TM. After that, the technological module is installed on stacking carts in the working area of the stand, where the base axis of the TM is aligned with the longitudinal axis of the stand along its reference targets using optical guidance and the corresponding mechanisms of the stacking carts, after which the longitudinal axis of the stand is aligned with the axis of the stationary part of the plug using optical guidance and use of targets, as well as horizontal and vertical NU microelectric drives. With the help of a crane, the removable part of the plug is installed, which is hung, compacted and fixed on the stationary part of the plug in the aiming device, and the inner cavity of the hole of the removable part of the plug is guided to the outer diameter of the technological module until it comes into contact with the end face of the technological frame is carried out according to a digital program using horizontal microelectric drives. and vertical movements of the pointing device and axial movement of the platforms from laser triangulation distance sensors that emit laser beams to the outer base surfaces of the reflectors mounted on the plug and receive signals reflected from their surface for introduction into the control circuit of the pointing device. The flange connection is mounted on the process frame and a conical self-sealing is formed, after which all the above operations are performed with another plug at the opposite end of the process module, the cavity of the process module is filled with working fluid using a stationary pumping station with pressure and drain pipelines and tested for strength and tightness. The stand for testing TM deep-sea vehicles for internal pressure containing a carrier frame consists of two side walls connected by two jumpers, on which guides are mounted for moving two vertical platforms installed parallel to each other on self-propelled carts with microelectric drives, supports for the technological module, made in in the form of slipway trucks, the rails of which are located perpendicular to the axis of the stand, sealing heads made in the form of plugs with flanges of certain diameters, having conical sealing surfaces of different diameters, mounted on platforms towards each other along the longitudinal axis of the stand with the possibility of their movement. In this case, the sealing heads are equipped with sealing O-rings, which are installed during testing on top of the module body against the stop of the flange end and with additional fixation with a sealant. The stand also includes screw stops for fixing the platforms on the end surfaces of the technological module, a device for removing the seal, means for monitoring the parameters and supplying the working fluid to the test cavity, a drainage system for draining possible leaks of the working fluid. Platforms are suspended on self-propelled trolleys with microelectric drives along the axis of the stand through screw transmissions, on which the guiding devices are mounted, equipped with microelectric drives of vertical and horizontal movements of the screw type, and on the supporting platforms of the guiding device on the rollers, opposite each other, there are lodgements, on which the stationary parts of the plugs are mounted, having flanges for installing, fixing and sealing the removable parts of the plugs, and flange connectors mounted on technological frames consist of flanges of the removable part of the plugs, split half rings and fasteners. At the same time, the seals between the outer cylindrical surfaces of the process module and the removable parts of the conical cavities of the plugs are made self-sealing with stuffing box packing around the perimeter.

EFFECT: ensuring the possibility of hydraulic pressure testing for strength not only from shear forces in the cross section, but also from normal stresses in the longitudinal section of large-sized TM cases.

7 cl, 9 dwg

Description

The invention relates to the production of technological modules (TM) of deep-sea submersibles, namely, to technology and equipment for hydraulic testing of cylindrical shells for strength against shear forces (in the cross section of the shell) and from normal tensile stresses (in the longitudinal section of the shell). "Calculation of the strength of machine parts" Reference manual. I.A. Birger et al., Mashinostroenie, Moscow, 1966, p. 543 - 556.

TM - welded sections of the main hull structures of deep-sea vehicles. The outer diameters of the main HM bodies can reach 9 - 14 m, and the length is 22 - 36 m. The mass of these HMs with welded-in saturation can reach up to 1500 tons. The internal test pressure of such HMs can reach up to 6.0 MPa.

The invention can be used both in the construction and repair of such weight and size TM deep-sea submersibles and other large sealed hulls and pressure vessels.

The resource and high reliability of deep-sea submersibles depend on the quality of manufacture of TM hulls, which is checked by instruments and methods of non-destructive testing, as well as hydraulic tests for strength and tightness. All these requirements are set out in the relevant regulatory and design documents.

Hydraulic tests of TM for strength and tightness are especially time-consuming. It is known that these tests are carried out by enterprises of the shipbuilding industry on slipways (slip lines), where the main body is directly assembled on slip trolleys, on which their necessary technological movements along the slip line are carried out, while hydraulic tests are also carried out here.

To carry out hydraulic tests, special technological plugs of the appropriate size and strength are made, which are welded to both ends of the TM body, connect the test cavity of the TM with a high-pressure hydraulic station, mount a drainage system to drain possible leaks and perform hydraulic tests in accordance with the technological process. After that, the technological plugs are cut and the TM is prepared for docking with the main body of the deep-sea vehicle.

All of the above works take a significant amount of slipway time and, accordingly, affect the duration of the construction of manufactured deep-sea vehicles.

When carrying out hydraulic tests of the TM hull from the area of the slipway line, it is possible to increase its throughput and, consequently, increase the number of produced deep-sea vehicles, but for this it is necessary to organize a special site for hydraulic testing of TM hulls, which should be equipped with a stand for testing large-sized TM hulls for strength and tightness, other necessary technological equipment and tools.

An invention is known according to the patent of the Russian Federation No. 2503943 related to rocket technology, namely to bench equipment designed for hydraulic testing of rocket engine housings for internal pressure.

Stand for testing large-sized cases for internal pressure, containing a rear flange unloader, which consists of a cylinder mounted on the rear flange and a piston having a stop connected to the power floor of the stand and contains a nozzle body simulator and an unloader with two pistons and cylinders of different diameters, the piston of smaller diameter is located in the cylinder, made in the piston of larger diameter, the cylinder of which is connected to the rear flange of the housing through the nozzle body simulator.

However, the design of the stand of the specified analogue will not be able to provide hydraulic tests of TM of the indicated weight and size characteristics and, moreover, will require the creation of a fundamentally new design of the stand.

An invention is known according to the patent of the Russian Federation No. 2184946. This invention relates to the field of testing technology, in particular, to determine the tightness of pipes.

A device for testing pipes for tightness, consisting of bases, sealing heads, one of which is installed with the possibility of axial movement, sealing head drive, supports for the tested pipe, made in the form of rests, having adjustable support and clamping surfaces connected to hydraulic cylinders operating in a single hydraulic system, the pressure in which is controlled by a pressure control sensor according to the signals of linear position sensors that are in contact with the end of the test pipe.

Linear position sensors contain test pressure switches that interrupt the test when the end of the pipe reaches the position corresponding to the beginning of plastic deformation in any of its sections.

The design of this device also cannot provide hydraulic tests of TM of the indicated weight and size characteristics for strength and tightness, since forces on sealing plugs can reach up to 70,000 t/s, which requires the creation of a fundamentally new load-bearing structure of the stand.

An invention is known according to the patent of the Russian Federation No. 2701756.

The invention relates to the production of technological modules for deep-sea submersibles, namely to equipment for carrying out hydraulic tests for strength and tightness. The stand contains sealing heads installed with the possibility of their movement, supports for the tested module with adjustable mounting mechanisms, means for monitoring the parameters and supplying the working fluid to the test cavity, a drainage system for draining possible leaks of the working fluid. The stand is made in the form of a carrier frame, consisting of two side walls, which are connected from above by two jumpers, on which guides are mounted for moving two vertically located platforms installed parallel to each other on self-propelled carts, while screw stops pass through the mentioned walls, designed for fixing platforms on the end surfaces of the module, and the supports are made in the form of stacking trolleys, the rail paths for which are located perpendicular to the axis of the stand, the sealing heads are made in the form of flanges of certain diameters installed on the platforms towards each other along the axis of the stand and the openings of which have conical sealing surfaces directed inward , moreover, they are equipped with sealing rings of round section, which are installed during testing on top of the module body against the stop of the flange end and with additional fixation with a sealant.

Disadvantages:

- the specified device cannot provide hydraulic tests by internal pressure for strength from normal tensile stresses in the longitudinal section of the TM;

- the specified device does not have a directing device (NU) for centering the plugs relative to the outer diameter of the TM, so the operation of centering the plugs with a diameter of up to 14 m and a mass of up to 50 tons relative to the TM is a laborious and dangerous handling operation.

Despite these shortcomings, the invention according to patent No. 2701756 is the closest in technical essence to the achieved result and therefore taken as a prototype.

The objective of the invention is to develop a technologically advanced, reliable and relatively inexpensive method implemented by means of a stand operating outside the slipway zone and providing hydraulic internal pressure tests for strength from shear forces in the cross section and normal stresses in the longitudinal section of large-sized TM cases of several sizes with a significant reduction in labor intensity tests due to the creation of wells, saving material resources and, as a result, increasing the productivity of the release of deep-sea vehicles from the slipway.

The main technical result is to provide the possibility of hydraulic pressure testing for strength not only from shear forces in the cross section, but also from normal stresses in the longitudinal section of large-sized TM cases.

Another technical result is the use of reusable removable parts of plugs of several standard sizes.

Also, the technical result consists in the use of NU when installing plugs on the TM.

In total, when performing the task of the proposed invention, the laboriousness of installing and removing reusable removable parts of the plugs is reduced, as well as saving energy and metal.

Obtaining the specified technical result is ensured by the method of testing TM for internal pressure, in which two technological frames (TSh) are welded onto the outer and inner surfaces of the TM at a distance of at least 200 mm from each end. Then, the basic axis of the TM is aligned by optically pointing the targets relative to each other, which are mounted on shergens in the end sections of the internal cavity of the TM.

After that, the technological module is installed on stacking carts in the working area of the stand, where the base axis of the TM is aligned with the longitudinal axis of the stand along its reference targets using optical guidance and the corresponding mechanisms of the stacking carts, after which the longitudinal axis of the stand is aligned with the axis of the stationary part of the plug using optical guidance and use of targets, as well as horizontal and vertical NU microelectric drives.

Then, using a crane, the removable part of the plug is installed, which is hung, compacted and fixed on the stationary part of the plug in the aiming device, and the inner cavity of the hole of the removable part of the plug is guided to the outer diameter of the technological module until it comes into contact with the end face of the technological frame is carried out according to a digital program using microelectric drives horizontal and vertical movements of the pointing device and axial movement of the platforms from laser triangulation distance sensors that emit laser beams to the outer base surfaces of the reflectors mounted on the plug and receive signals reflected from their surface for introduction into the control circuit of the pointing device.

Then the flange connection is mounted on the process frame and a conical self-sealing is formed, after which all the above operations are performed with another plug at the opposite end of the process module, the cavity of the process module is filled with working fluid using a stationary pumping station with pressure and drain pipelines and tested for strength and tightness .

Obtaining the specified technical result is also achieved through the use of a stand for testing TM deep-sea submersibles for internal pressure containing a supporting frame consisting of two side walls connected by two jumpers, on which guides are mounted for moving two vertically located platforms installed parallel to each other on self-propelled carts with microelectric drives, supports for the technological module, made in the form of stacking trolleys, the rail paths of which are located perpendicular to the axis of the stand, sealing heads, made in the form of plugs with flanges of certain diameters, having conical sealing surfaces of different diameters, installed on the platforms towards each other along the longitudinal axis stand with the possibility of their movement. In this case, the sealing heads are equipped with sealing O-rings, which are installed during testing on top of the module body at the stop of the flange end and with additional fixation with a sealant. The stand also includes screw stops for fixing the platforms on the end surfaces of the technological module, a device for removing the seal, means for monitoring the parameters and supplying the working fluid to the test cavity, a drainage system for draining possible leaks of the working fluid.

On self-propelled trolleys with microelectric drives, along the axis of the stand, platforms are suspended through screw gears, on which the guiding devices are mounted, equipped with microelectric drives of vertical and horizontal movements of the screw type, and on the supporting platforms of the guiding device on the rollers, opposite each other, there are lodgements, on which the stationary parts of the plugs are mounted, having flanges for installing, fixing and sealing the removable parts of the plugs, and flange connectors mounted on technological frames consist of flanges of the removable part of the plugs, split half rings and fasteners. At the same time, the seals between the outer cylindrical surfaces of the technological module and the removable parts of the conical cavities of the plugs are made self-sealing with stuffing box packing around the perimeter.

In a particular case, the system for pointing the internal cavity of the removable part of the plugs to the outer diameter of the TM is built on the basis of laser triangulation distance sensors, a programmable logic controller and frequency converters, where four laser triangulation distance sensors are installed in the same plane on mutually perpendicular reference platforms of the stand: upper - lower , right - left, which are connected to a programmable logic controller, the program of which provides equal distances between each outer base surface of the reflector and each of a pair of opposed sensors by issuing commands via a digital bus to frequency converters that control microelectric drives of vertical and horizontal movements, and automated control according to vertical and horizontal directions is carried out independently during the longitudinal supply of the plug until it comes into contact with the TS.

In another particular case, the stand axis is aligned with reference targets mounted oppositely on the fixed part of the structure.

In the third particular case, the removable parts of the plugs are made with different diameters of the contact holes corresponding to the outer diameters of the tested TM.

In the fourth particular case, counterweights with a variable load are installed on the support platforms of the PU opposite to the plugs.

In the fifth particular case, the vertical movement microelectric drive is made with at least two guides.

For the convenience of forming a conical self-sealing at a distance of at least 200 mm from each end, two TSs of the required strength and rectangular cross-section are welded onto the outer and inner surfaces of the TM, on which flange joints are mounted to ensure the necessary hydraulic tests with an internal pressure of up to 6 MPa for strength from overcutting forces in the cross section and normal stresses in the longitudinal section of the TM. A distance of at least 200 mm from the end of the TM to the side surface of the TS ensures the manufacturability of the formation of a conical self-sealing.

The basic axis of the TM is verified by optically pointing the targets relative to each other. Targets are installed on shergens in the end sections of the internal cavity of the TM in accordance with the governing document RD5.LKIB.3320-203-2014 "Products 21. Guidelines for controlling the shape of the main buildings by optical methods", OJSC "TsTSS", St. Petersburg, 2015 Alignment of the base axis of the TM allows using the indicated optical methods to align the base axis of the TM with the longitudinal axis of the stand along the reference targets installed along its axis, as well as the axial target of the NU installed in the center of the stationary part of the plug.

Plugs are mounted on the NU, which consist of removable and stationary parts. The number, dimensions and weight of the removable parts of the plugs are determined by the number and dimensions of the tested HM. NU are suspended on platforms and equipped with microelectric drives for horizontal and vertical movement of the plugs and, together with microelectric drives of the platforms, provide guidance of the internal cavity of the removable part of the plugs on the outer diameter of the TM until it comes into contact with the end surface of the TS. To improve the accuracy of pointing and simplify the pointing operation itself, a digital program is used using laser triangulation distance sensors as sensors, for example, the LD3 series of IPK INCOM LLC, which emit laser beams on the base surface of reflectors installed on the outer base cylindrical surface of the removable parts of the plugs and receiving their reflection through the lens onto a photomatrix for introduction into the control circuit of microelectric drives of NU and platforms.

After mounting the flange connection on the TS, a conical self-sealing is formed between the outer cylindrical surfaces of the TM and the removable parts of the conical cavities of the plugs, which are made self-sealing with stuffing box packing around the perimeter. Gland packings are widely used as gland seals of simple design, operating at temperatures from -70°С to +300°С and pressures up to 90 MPa. The novelty of the proposed gland seal lies in the fact that the usual gland packing is formed in the form of a sealing package, which must be periodically pressed, and the conical cavity with the gland seal around the entire perimeter has the property of self-sealing. When installing new gland packing rings instead of worn ones, the old rings are removed from the gland cavity using metal hooks or corkscrew-like devices on a flexible roller. "Seals and sealing technology", Handbook edited by A.I. Golubeva and L.A. Kondakova, Moscow, Mashinostroenie, 1994, p.350.

On the support platforms of the pumping station on the rollers opposite each other, lodgements are installed, on which the stationary parts of the plugs are mounted. This design allows using microelectric drives to carry out horizontal movement of the stationary part of the plugs in the direction perpendicular to the axis of the stand.

Flange connectors of the removable part of the plugs, mounted on the TS, consist of flanges of the removable part of the plugs, split half-rings and fasteners. Detachable half rings allow mounting and dismantling of flange connectors on the TS both inside the TM cavity and from the outer surface of the TM.

The system for pointing the internal cavity of the removable part of the plugs to the outer diameter of the TM is based on laser triangulation distance sensors (LTDR), a programmable logic controller (PLC) and frequency converters (FC). The system includes four LTDR, which are installed in the same plane in pairs and mutually perpendicular on the reference platforms of the stand: upper - lower, right - left. The LTDR is connected to a PLC whose program provides equal distances between the outer base surface of the reflector mounted on the cylindrical surface of the removable part of the plugs and each of the pair of opposed sensors. Such a guidance system is relatively accurate and provides a reduction in labor intensity when installing and removing removable parts of the plugs.

The axis of the stand was verified with reference targets according to the guidelines RD5.LKIB.3320-203-2014. Alignment of the base axis of the stand allows you to use optical methods to combine it with the base axis of the TM, the axial target of the plug and allows you to install reference platforms for mounting the LTDR.

Counterweights with a variable load are installed on the support platforms of the NU opposite to the plugs. Since the removable part of the plugs can differ significantly in weight depending on the tested TM, this must be taken into account when adjusting the counterweight with a variable load.

Microelectric actuators of screw-type hydraulic actuators provide vertical movement of the plugs, they work in the vertical direction under the constant action of gravity. Each such microelectric drive is made with at least two guides to relieve bending and torsional stresses from the load screw and nut (Fig.8).

Thus, the proposed invention makes it possible to carry out hydraulic internal pressure tests of cylindrical shells for strength from shear forces in the cross section and normal stresses in the longitudinal section. At the same time, it is possible to test several standard sizes of TM with a significant reduction in labor intensity and material resources.

The essence of the invention is illustrated by the following graphic figures:

Figure 1 - TM, mounted on slipway trucks, with a verified base axis at the ends.

Figure 2 - TM mounted on the ends of the target and Shergen (lodgements and stacking trucks are not shown).

Fig.3 - General view from above. TM installed in the working area of the stand.

Fig.4 - Section A-A. Installation of platforms on rails, supporting frame with NU, plugs and counterweight.

Fig.5 - View B. Flange fastenings of the TS, stationary and removable parts of the plug with a seal and fasteners. Installation of a reflector on a magnet.

Fig.6 - Electrical block diagram of the system for aiming the plug at the outer diameter of the TM.

Fig.7 - General view of the stand. position before testing.

Fig.8 - View B. The layout of the vertical screw drive with a platform and NU.

Fig.9 - Section G–G. Installing the LTDR together with the reflector on the base cylindrical surface of the removable part of the plug.

Work on testing TM of deep-sea vehicles for internal pressure is carried out in several stages:

- carrying out preparatory work;

- carrying out work on the installation and sealing of TM in the working area of the test bench;

- filling with a working fluid and testing the strength of the TM cavity from shear forces in the cross section and normal stresses in the longitudinal section;

- Carrying out final work.

Carrying out the preparatory work begins with welding two TSh 1 on the outer and inner surfaces of the TM 2 at a distance "L" of at least 200 mm from each end 3 (Figure 1). This operation is carried out on a slipway position. The geometric parameters of TSh 1 and its welds are determined by the product developer.

The hulls of the finished TM 2 are sent for control of the geometric shape and dimensions after the completion of all hull assembly and welding work. The ends 3 of the TM 2 cases entering the control must be machined perpendicular to the diametral plane (DP) and the mounting-base plane (MBP) TM 2 with a deviation from perpendicularity of not more than ±1 (0.3 mm per 1 m of the controlled length). The deviation from the vertical and horizontal longitudinal axes should also not exceed ±1.

Produce alignment relative to the longitudinal base axis TM 2. The longitudinal base axis is formed by a line passing through the centers of the ends 3 TM 2. It is fixed by targets 4 in shergen 5 installed in the ends 3 TM 2 (Fig.1,2).

The main technological bases for installing TM 2 in a hydraulic test bench are:

- the base axis, determined by the centers of the end sections and fixed by targets 4 in shergens 5, installed at the ends 3;

- base sections (ends 3) machined perpendicular to the base axis ТМ 2;

- the center of the base section.

The base axis of the TM is adjusted by optically pointing the targets 4 relative to each other. The targets 4 are installed and aligned on the shergens 5 at the ends 3 of the internal cavity of the TM 2 (Figure 1) in accordance with the guidance document RD5.LKIB.3320-203-2014 "Products 21. Guidelines for controlling the shape of the main bodies by optical methods", OJSC "TsTSS", St. Petersburg, 2015

TM 2 with a verified base axis, on slipway trucks 6 is transported and installed in the working area of the test bench (Figure 1).

Building trolleys 6 (Figure 1) are a universal vehicle and have a wide range of applications when carrying out hull assembly and repair work at the shipbuilding industry. They have a large load capacity, have devices for turning by 90 ° and adjustment, both in height and in the horizontal direction. They can be transported independently with TM from the slipway line to the working area of the stand without the use of other lifting and transport vehicles.

Stand for hydraulic testing of buildings TM 2 (Figure 1) is a set of equipment mounted indoors. The stand can be assembled from welded steel structures capable of withstanding significant loads of several thousand tons.

The stand is arranged in the form of a carrier frame 7, consisting of side supports 8 and two upper jumpers 9. On the side supports 8, reference targets 10 of the longitudinal axis of the stand 11 are mounted opposite each other. On the upper jumpers 9, guides 12 are mounted. along the longitudinal axis of the stand 11 there are rail tracks 13 for installing TM 2 on slipway trucks 6 in the working position. On the guides 12 are installed towards each other two platforms 14 (Fig.3, 7). Each platform 14 is suspended on screw drives 15 and guides 51 inducing devices 16, consisting of supporting metal structures 17, on which two support platforms 18 and 19 are mounted (Fig.4,8).

On the support platform 18 there are cradles 20 on rollers 21 with a screw drive 22. On the cradles 20 plugs 23 are installed towards each other, consisting of 24 stationary and 25 removable parts. A counterweight 26 with a variable load 27 is installed on the support platform 19 (Figures 4, 5).

With the help of optical guidance and the corresponding mechanisms of the slipway trucks 6, the base axis of the TM 2 is aligned with the longitudinal axis of the stand 11 along its reference targets 10 in accordance with the guidance document RD5.LKIB.3320-203-2014 (Fig.1, 7).

With the help of optical guidance and the use of horizontal and vertical screw drives 22 and 15 mounted on radial and thrust bearings mounted through couplings with gear motors (not shown in Fig.) of microelectric drives 30, the longitudinal axis of the stand 11 is aligned along its reference targets for 10 s the axis of the stationary part 24 of the plug 23 along the target 28 located in the center of the stationary part 24 of the plug 23, in accordance with the guidance document RD5.LKIB.3320-203-2014 (Fig.4, 7, 8).

On the stationary part 24 of the plug 23 NU 16, using a crane, hang, compact and fix the necessary removable part 25 of the plug 23, which will be docked with the outer diameter of the tested TM 2. Depending on the mass of the removable part 25 of the plug 23, the corresponding variable is set in the counterweight 26 cargo 27 (Fig.4, 5).

The hole 36 of the removable part 25 of the plug 23 is directed to the outer diameter of TM 2 until it comes into contact with the end of the TS 1 according to a digital program, using microelectric drives of horizontal 29 and vertical 30 displacements NU 16 from LTDR 31, emitting laser beams on the outer base surface 32 of the reflector 33 mounted on magnets 34, on the outer cylindrical base surface 35 of the removable part 25 of the plug 23. Prior to testing, the outer cylindrical base surface 35 at length l ₁ is checked with the cylindrical surface of the hole 36 for compliance with the deviation from parallelism of no more than ± 1.0 mm, which ensures a uniform gap to create a conical seal 37 between the outer diameter of TM 2 and the conical surface of the hole 36 of the removable part 25 of the plug 23 (Fig.4, 5).

The laser beams reflected from the outer base surface 32 through the LTDR 31 are introduced into the guidance system of the removable part 25 of the plugs 23 relative to the outer diameter of the TM 2 (Fig.6).

The guidance system is built on the basis of LTDR 31, PLC 38 and FC 39 (Fig.6), where four LTDR 31 are installed in the same plane mutually perpendicularly outside the crane coverage area on the reference platforms of stand 40 in the following order: upper - lower, right - left. LTDR 31 is connected to the PLC 38, the program of which provides equal distances between the outer base surface 32 of the reflector 33 and each of the pair of opposed sensors LTDR 31 (Fig.9) by issuing commands via a digital bus to the FC 39, which controls the microelectric drives of vertical 30 and horizontal 29 movements , and automatic adjustment along the vertical and horizontal axes is carried out independently during the longitudinal supply of the removable part 25 of the plug 23 by the microelectric drive 52 of the platform 14 until it comes into contact with the end of the TS 1. The operation of the guidance system is controlled by the control panel 49, and the operation is controlled using a personal computer 50 ( Fig.6).

The flange connection is mounted on TSh 1. To do this, semi-rings 41 are installed on the outer surface of TM 2 and they are preliminarily tightened with flange 42 by bolted connections 43 with emphasis on the end surfaces of TSh 1. Shergen 5 with target 4 is removed from the sealed end. Inserted into the internal cavity TM 2 half rings 44 and preliminarily tighten them together with stud connections 45 with emphasis on the end surfaces of TS 1. Finally, bolt 43 and stud connections 45, as well as thrust nut 46, are tightened with torques determined by the product developer and hydraulic testing technology TM 2 (Fig. five).

A cone self-sealing 37 is formed in accordance with the technology of hydrotesting TM 2.

The listed operations are performed with a plug on the opposite end of TM 2.

Installation of self-sealing 37 flange connections on the TS 1 from the inside is carried out by personnel who penetrate into the internal volume of the TM 2 housing through special technological hatches (not shown in the figure).

Pipeline 47 is connected to special technological holes TM 2 and pumping station 48 (Figure 3, 7).

Check for correct assembly all connections of the hydraulic systems, filling and test systems, as well as the general drainage system 49.

Filling the working fluid and testing the strength and tightness of the cavity TM 2 is carried out in accordance with the relevant technology of the manufacturer and design documentation using a hydraulic system consisting of pipeline 47 (pressure and drain paths), as well as pumping station 48.

The final work at the end of the tests for the strength and tightness of the TM 2 cavity is carried out in the following sequence:

- relieve pressure in the hydraulic system, consisting of pipeline 47 and pumping station 48;

- drain the working fluid from pipelines 47 and cavity TM 2;

- dismantle flange connections on ТШ 1;

- withdraw to the initial position of the platform 14;

- drain the residual working fluid through the drainage system 49.

As a result of these operations, TM 2 is ready to carry out the following operations in accordance with the technological process.

Thus, the proposed group of inventions provides improved manufacturability and efficiency of hydraulic testing outside the slipway line.

Claims (7)

1. A method for testing technological modules of deep-sea vehicles for internal pressure using a stand for testing technological modules of deep-sea vehicles for internal pressure, containing a supporting frame consisting of two side walls connected by two bridges, on which guides are mounted for moving two vertically located platforms, supports for technological module, made in the form of stacking trolleys, sealing heads made in the form of plugs with flanges of certain diameters, screw stops, a device for removing the seal, means for monitoring the parameters and supplying the working fluid to the test cavity, a drainage system for draining possible leaks of the working fluid, suggestive devices equipped with microelectric drives of vertical and horizontal movements of the screw type, lodgements on which the stationary parts of the plugs are mounted, characterized by the fact that two technological frames are welded onto the outer and inner surfaces of the technological module at a distance of at least 200 mm from each end, the basic axis of the technological module is aligned by optically pointing the targets relative to each other, installed on the shergens in the end sections of the internal cavity of the technological module, the technological module on stacking carts installed in the working area of the stand, where the basic axis of the technological module is aligned with the longitudinal axis of the stand along its reference targets, the longitudinal axis of the stand is aligned with the axis of the stationary part of the plug using optical guidance and the use of targets, as well as microelectric drives for horizontal and vertical movements of the pointing device, with using a crane, the removable part of the plug is installed, which is hung, compacted and fixed on the stationary part of the plug in the inducing device, and pointing the inner cavity of the hole of the removable part of the plug to the outer the diameter of the technological module before contact with the end face of the technological frame is produced according to a digital program using microelectric drives for horizontal and vertical movements of the pointing device and axial movement of the platforms from laser triangulation distance sensors that emit laser beams on the outer base surfaces of reflectors mounted on a plug and receiving reflections reflected from their surface signals for introduction into the control circuit of the inducing device; the flange connection is mounted on the process frame and a conical self-sealing is formed, all of the above operations are performed with another plug at the opposite end of the process module, the cavity of the process module is filled with working fluid using a stationary pumping station with pressure and drain pipelines and tested for strength and tightness. 2. Stand for testing the technological modules of deep-sea vehicles for internal pressure for implementing the method according to claim 1, containing a supporting frame consisting of two side walls connected by two bridges, on which guides are mounted for moving two vertical platforms installed parallel to each other on self-propelled carts with microelectric drives; supports for the technological module, made in the form of slipway trucks, the rails of which are located perpendicular to the axis of the stand; sealing heads made in the form of plugs with flanges of certain diameters, having conical sealing surfaces of different diameters, mounted on platforms towards each other along the longitudinal axis of the stand with the possibility of their movement, while the sealing heads are equipped with sealing rings of round section, installed during testing over the body module against the stop of the flange end and with additional fixation with a sealant; screw stops for fixing platforms on the end surfaces of the technological module; seal removal device; means for monitoring the parameters and supplying the working fluid to the test cavity; drainage system for draining possible leaks of the working fluid; characterized in that on self-propelled trolleys with microelectric drives along the axis of the stand, platforms are suspended through screw gears, on which the guiding devices are mounted, equipped with microelectric drives of vertical and horizontal movements of the screw type, and on the supporting platforms of the guiding device on the rollers, opposite each other, there are lodgements on which the stationary parts of the plugs are mounted, having flanges for installing, fixing and sealing the removable parts of the plugs, and the flange connectors mounted on the technological frames consist of flanges of the removable part of the plugs, split half rings and fasteners, while the seals between the outer cylindrical surfaces of the technological module and the removable parts of the conical cavities of the plugs are made self-sealing with gland packing around the perimeter. 3. Stand for testing technological modules of deep-sea vehicles for internal pressure according to claim 2, characterized in that each system for pointing the internal cavity of the removable part of the plugs to the outer diameter of the technological module is built on the basis of laser triangulation distance sensors, a programmable logic controller and frequency converters, where four laser triangulation distance sensors are installed in the same plane on mutually perpendicular reference platforms of the stand: upper - lower, right - left, which are connected to a programmable logic controller, the program of which provides equal distances between each outer base surface of the reflector and each of the pair of opposed sensors by means of issuing commands via a digital bus to frequency converters that control microelectric drives of vertical and horizontal movements, and automated regulation in vertical and horizontal directions is carried out by regardless of the length of the longitudinal supply of the plug until it comes into contact with the technological frames. 4. Stand for testing technological modules of deep-sea vehicles for internal pressure according to claim 2, characterized in that the longitudinal axis of the test stand is aligned with reference targets mounted oppositely on a fixed part of the structure. 5. Stand for testing technological modules of deep-sea vehicles for internal pressure according to claim 2, characterized in that the removable parts of the plugs are made with different diameters of the contact holes corresponding to the outer diameters of the tested technological modules. 6. Stand for testing technological modules of deep-sea vehicles for internal pressure according to claim 2, characterized in that counterweights with a variable load are installed on the support platforms of the inducing device opposite to the plugs. 7. Stand for testing the technological modules of deep-sea vehicles for internal pressure according to claim 2, characterized in that the microelectric drive of the inducing vertical movement device is made with at least two guides.

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