RU172775U1 - HEAT EXCHANGER SEISMIC RESISTANT LAMINATE DISASSEMBLY - Google Patents

Abstract

The inventive utility model relates to the field of power engineering and can be used in the manufacture of seismic plate heat exchangers with seismic resistance up to 8 points on the MSK scale inclusive, used in industrial facilities located in seismically hazardous areas where heat exchange between the media is used, including The objective of the utility model is to create a seismic resistant plate heat exchanger with seismic resistance up to 8 points on the MSK-64 scale, for which it is necessary to strengthen the guides between the pressure plate and the support by installing bushings and ensuring ease of installation and dismantling during its repair and maintenance during operation. The indicated seismic resistance allows the equipment to carry out heat transfer processes for various purposes with sufficient efficiency in the most unfavorable conditions, especially at nuclear facilities. The design of the claimed utility model belongs to the class of repaired, restored products, therefore, it should ensure the convenience of installation-dismantling during its repair and maintenance during operation, reduction of labor costs. Earthquake-resistant plate-type heat exchanger consists of a thin stamped package metal plates with a corrugated surface with shaped sealing gaskets along their contour, main plate, pressure plate, rack and, the guides of the upper and lower, a set of tie rods with nuts and centering sleeves, telescopic sleeves, lock nuts. The main plate has four openings "inputs / outputs" of working fluids to which flanges of supply pipelines are attached. The presser plate has holes for the tie rods and for the passage of the upper and lower guides. The upper and lower guides are attached to the main plate and the rack using threaded connections. The main plate and the rack are attached to the foundation or building structure using fixing legs and anchor bolts at the place of use . The essence of the claimed utility model in terms of increasing the seismic resistance of the heat exchanger up to 8 points on the MSK-64 scale is to provide increased rigidity for the part of the heat exchanger design located I’m waiting for the rack and the pressure plate. Structurally, this has been solved by appropriate calculations for the earthquake resistance of the structure, according to the requirements of the regulatory framework for ensuring the earthquake resistance of nuclear power facilities with the choice of a channel bar and increasing the stiffness of the guides due to the installation of clamps and a rack of bushings with lock nuts. utility model in terms of creating ease of installation and dismantling and, accordingly, in reducing labor costs during its repair and maintenance in the process of The use consists of the use of telescopic threaded bushings and lock nuts. This design allows gaskets to be replaced and heat-exchange plates removed for repair by screwing the bushings with the internal thread toward the rack and then sliding the clamping plate along the guide rails towards the rack, after removing the tie rods. The result of the calculations and the adopted structural solutions is to increase the seismic resistance of the heat exchanger to 8 points on the MSK-64 scale, assembly-disassembly and maintainability heat exchanger.

Description

The inventive utility model relates to the field of power engineering and can be used in the manufacture of seismic plate heat exchangers with seismic resistance up to 8 points on the MSK scale inclusive, used in industrial facilities located in seismically hazardous areas where heat exchange between the media is used, including at nuclear facilities.

The closest analogue adopted for the prototype is a method of manufacturing a collapsible plate heat exchanger.

The heat exchanger adopted for the prototype consists of a package of heat-exchange embossed plates with gaskets.

The package is placed between the fixed main and movable pressure plates on the upper and lower guides.

At one end, the guides are fixed in a fixed base plate by screwing threaded shanks into the threaded holes.

At the other end, the guides are fixed in the support, for which the threaded shanks are placed in the corresponding holes of the support and fixed by means of nuts screwed on them.

Then, the package of plates is pulled together and the package is fixed between the fixed main and pressure plates using threaded rods with nuts screwed on them.

After tightening the package of plates, unscrew the nuts and dismantle the support, and install metal sleeves on the ends of the rails from the side of the support.

After installing the bushings, the support is re-installed, the nuts are screwed onto the threaded shanks, which tighten with the force with which the nuts are tightened on the threaded rods when tightening the heat-exchange plate package (Patent FR No. RU 430822, IPC V23Z 15/26, F28D 9/00, publ 10.10.2011).

The signs of this design collapsible plate heat exchanger, adopted as a prototype, common with the claimed utility model, the following:

 the presence of a package of corrugated plates with gaskets;

 the presence of a fixed main plate (in the claimed utility model - the main plate) and a movable pressure plate (in the claimed utility model - the pressure plate);

 the presence of support (in the claimed utility model - rack);

 the presence of guides - upper and lower;

 the presence of tie rods;

 the presence of bushings between the movable pressure plate and the support (in the claimed utility model - between the pressure plate and the rack).

The disadvantage of the design of the prototype is the difficulty in maintenance and repair, namely when replacing corrugated plates and gaskets between the plates.

For the indicated replacement in the heat exchanger adopted as a prototype, it is necessary to completely dismantle the support and remove the movable pressure plate, which for large heat exchangers is of great difficulty - the use of lifting mechanisms and considerable labor costs.

Utility Model Disclosure

The objectives of the utility model - seismic resistant plate heat exchanger collapsible:

 ensuring the convenience of installation and dismantling during repair and maintenance during operation;

 increase of seismic resistance up to 8 points on the MSK-64 scale.

The design of the claimed utility model belongs to the class of repaired, restored equipment, therefore, it should provide the convenience of mounting and dismounting during its repair and maintenance during operation.

Increased seismic resistance allows the equipment to carry out heat transfer processes for various purposes with sufficient efficiency in the most adverse conditions, especially at nuclear facilities.

The earthquake-resistant plate heat exchanger is collapsible, consisting of a package of thin stamped metal plates with a corrugated surface with shaped sealing gaskets along their contour, the main plate, the pressure plate, the rack, the upper and lower guides, the set of tie rods.

The guides between the stand and the pressure plate are equipped with telescopic threaded bushings and lock nuts.

The main plate has four openings "inputs and outputs" of the working environment, to which the flanges of the supply piping

The pressure plate has holes for the tie rods and for the passage of the top and bottom guides.

The upper and lower guides are attached to the base plate and stand using threaded connections.

The base plate and the stand are attached to the foundation or building structure using mounting feet and anchor bolts at the place of operation.

The essence of the claimed utility model in terms of ensuring the convenience of mounting and dismounting during repair and maintenance during operation of a seismic resistant plate heat exchanger is that the guides between the rack and the pressure plate are equipped with telescopic sleeves with thread and lock nuts, while the rack is made of channel.

This design allows replacement of gaskets and removal for repair of heat exchanger plates by screwing the sleeve with internal thread towards the rack and then shifting the pressure plate along the rails towards the rack, after removing the tie rods.

The increase in the seismic resistance of the utility model was solved by appropriate calculations, in accordance with the requirements of the regulatory framework for ensuring the seismic resistance of nuclear facilities with a channel as the rack and increasing the rigidity of the rails due to the fact that the rails between the rack and the plate are equipped with telescopic threaded bushings and lock nuts.

The result of the calculations and structural decisions taken is to increase the earthquake resistance of the utility model to 8 points on the MSK-64 scale, assembly-disassembly and maintainability of equipment, and in accordance with this, the possibility of adapting the manufactured heat exchangers of seismic-resistant plate-type collapsible to the customer's needs, especially in terms of their operation at facilities use of atomic energy.

The proposed heat exchanger seismic plate-type collapsible shown in Fig. 1 (side view), installation of telescopic sleeves with thread in FIG. 2.

The seismic resistant plate heat exchanger consists of a package of 1 plates with gaskets, the main plate 2, the pressure plate 3, the rack 4, the guides of the upper and lower 5, the set of tie rods 6 with nuts and centering sleeves 7, telescopic sleeves with threads 8, 10, nuts control 9.

The main plate 2 has four openings "inputs and outputs" of the working medium to which the flanges of the pipelines 11 are attached.

The pressure plate 3 has holes for the tie rods 6 and for the passage of the upper and lower guides 5.

The upper and lower guides 5 are attached to the base plate 2 by screwing the threaded shanks into the threaded holes and to the stand 4 using bolts 12.

The base plate 2 and the rack 4 are attached to the foundation or building structure using the mounting legs of the anchor bolts at the place of operation.

In FIG. 2 shows the installation of telescopic bushings with a thread of 8.10. A telescopic sleeve 10 with an external thread ends at one end with a rack 4. An telescopic sleeve 8 with an internal thread is screwed onto the opposite end of the telescopic sleeve 10 with an external thread. The connection of the telescopic bushings with a thread of 8.10 is additionally fixed with a lock nut 9.

Assembling a seismic resistant plate heat exchanger

The package 1 of thin stamped metal plates with a corrugated surface and with shaped gaskets along their contour is assembled in such a way that when they are assembled, heat-exchange channels are formed along which the coolant flow is distributed in the desired direction.

The above package 1 is placed between the main plate 2 and the pressure plate 3 on the upper and lower guides 5.

To ensure increased rigidity of the node, consisting of a rack 4 and the upper and lower guides 5 in the area from the pressure plate 3 to the rack 4, the rack 4 is made of a channel, and the upper and lower guides 5 are reinforced by installing telescopic bushings with a thread 8.10 and lock nuts 9.

All details of the claimed utility model are made of steel grades depending on operating conditions.

Fasteners are used in Russia according to the interstate standard.

The design of the claimed utility model is resistant to seismic effects of 8 points.

The design of the claimed utility model is stable, withstands the arising operational, climatic, mechanical and other external influencing factors characteristic of the location of the seismic resistant plate-type heat exchanger.

Claims (1)

The earthquake-resistant plate heat exchanger is collapsible, consisting of a package of thin stamped metal plates with a corrugated surface with shaped sealing gaskets along their contour, the main plate, pressure plate, rack, top and bottom rails, a set of tie rods with nuts, characterized in that the rails between the rack and the pressure plate is equipped with telescopic threaded bushings and lock nuts, while the rack is made of channel.

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