Shop prestressed concrete products

 

(57) Abstract:

The invention relates to the construction materials industry, in particular to workshops for the production of prestressed concrete products. Object of the invention is the simplification of technological line for the production of prestressed concrete products. In this design workshop prestressed products shop contains a single pipeline direct and inverse line and the common input and output manifold thermoform systems the circulation of the coolant and refrigerant, and the supply line of the refrigerant from the shop air system, located one straight line passes directly through the heater high-temperature heat carrier and is provided with the output gear to adjust the pressure of facing the heated refrigerant. Moreover, a single pipeline direct and inverse line and the common input manifold thermoform can represent the cross-section of the pipe, i.e., to consist of inner and outer pipes for supplying, respectively, coolant and refrigerant, thus the output connections of the single input of the collectors thermoform are adjustable to sadistical for prestressed concrete products.

There are various design workshops prestressed concrete products (1). The closest to the technological nature of a workshop prestressed concrete products, consisting of stationary spaced sealed thermoform with lids in which to ground the implementation of the basic technological operations are technological transport trolley (2). It is possible to create a pre-stress in the working armature manufactured concrete products and for heat treatment of the concrete used production line, equipped respectively supply system in termodeck thermoform high-temperature heat carrier, equipped with a heater and circulation system of the refrigerant from the shop air line shuttering compartment and compartment thermocrete thermoform with the direct and the inverse of the pipeline, while a straight line is connected with the shuttering compartment thermoform and outer hermetic shell of the heater high-temperature coolant.

However, the presence of a large number of pipelines and collectors thermoform for circulation of the coolant and refrigerant significantly complicate tootemperatuuride coolant uneconomical and inefficient.

The aim of the invention is to simplify the process line for the production of prestressed concrete products.

This goal is achieved by the fact that the shop prestressed concrete products, consisting of stationary spaced sealed thermoform with lids for above-ground implementation of the basic technological operations are technological transport trucks, and to create a pre-stress in the working armature manufactured concrete products and for heat treatment of the concrete used production line, equipped respectively supply system in termodeck thermoform high-temperature heat carrier, equipped with a heater and circulation system of the refrigerant from the shop air line shuttering compartment and compartment thermocrete thermoform having direct and reverse line this straight line is connected with the shuttering compartment thermoform and outer hermetic shell of the heater high-temperature heat carrier, contains a single pipeline direct and inverse line and the common input and output manifold thermoform systems the brine and hladogenty, passes directly through the heater high-temperature heat carrier and is provided with the output gear to adjust the pressure of facing the heated refrigerant. Moreover, a single pipeline direct and inverse line and the common input and output manifold thermoform represent the cross-section of the pipe, i.e., consist of an inner and outer pipes for supplying, respectively, coolant and refrigerant, thus the output connections of the single input of the collectors thermoform provided with adjustable valves.

Comparative analysis prototyping workshop allows us to conclude that the claimed plant prestressed concrete products differs in that it contains a single pipeline direct and inverse line and the common input and output and output manifold thermoform systems the circulation of the coolant and refrigerant, and the supply line of the refrigerant from the shop air system, located one straight line passes directly through the heater high-temperature heat carrier and is provided with the output gear to adjust the pressure of facing the heated refrigerant. Moreover, a single pipeline direct and inverse line and nutrena and outer tubes for feeding, accordingly, coolant and refrigerant, thus the output connections of the single input of the collectors thermoform provided with adjustable valves.

Thus, the proposed solution meets the criterion of "novelty".

The comparison of the proposed solutions with other technical solutions shows that there are various designs of collectors, with the main property distribution passing through them liquids and gases, however, offer a single input connections due to outlet pipes adjustable valves acquire a new property temperature controllers coming in thermoform coolant and refrigerant, which is provided by regulation of the speed of their release from collectors.

In addition, passing through the heater high-temperature coolant pipe line for supplying coolant with the output gear to control the speed of its output, is a combination of two properties - the property of the transport line and temperature controller coming out of the heater of the refrigerant.

Thus, the claimed solution meets the criterion of "substantial differences".

In Fig. 1 - Fig. 9 predstavlen CLASS="ptx2">

Shop prestressed concrete products consists of a stationary located thermoform with lids 1 (see Fig. 1), where above-ground implementation of the basic technological operations are technological transport truck 2. To create a pre-stress in the working armature manufactured concrete products, heat treatment of concrete and for a smooth vacation tense reinforcement to concrete, to thermoformer 1 connected pipeline system containing a supply of coolant 3 and the refrigerant 4 shop air system, passing directly through the heater 5 (see Fig. 1).

It should be noted that the heating fluid and the refrigerant cheaper and more efficiently directly into the heater, for example, on gas fuel (gas furnace), containing multilayered tubular coils, made of heat-resistant steel, and which are respectively connected to lines 2 and 3, i.e. the heating of the coolant and the refrigerant is performed in the environment of the combustion products of natural gas.

At the exit of the heater 5, the supply line of the refrigerant 4 is equipped with a gear 6 (see Fig. 1) to regulate the speed of exit of heated refrigerant (air - gas).

The output sockets of the carrier 15 and the refrigerant 16 single input reservoirs 9 are provided with adjustable valves, respectively 17 and 18, allowing you to independently adjust the speed of exit of the coolant and the refrigerant. This is due to the necessity to obtain the same heating temperature of termodeck thermoform having a different cross-section, and achieve the desired temperature of heating of concrete products.

To enable pipelines coolant and refrigerant for heating and in lines 7 and 8, the system is equipped with valves 1A, 1B, 2A, 2B, 19, 20, 21 (see Fig. 1). All piping and manifold systems the circulation of the coolant and refrigerant protected by insulation 22 (see Fig. 3, Fig. 5, Fig. 7, Fig. 9).

In Fig. 1 - Fig. 9 not shown bunker betongindustri designed for the go cart the export of finished concrete products.

The proposed workshop prestressed concrete products works as follows.

Manufacture of prestressed concrete products are groups thermoform "a" and "B". Also there are two stages of production - the preparatory phase of tension reinforcement and heat treatment of concrete. During this preparatory phase (disassembly termoform, loading finished products for truck removal, cleaning, lubrication shuttering surface termoform, reinforcement, including full packing in the power stops thermoform working valve with anchors at the ends) perform with the help of technological transport trolleys.

Start with group thermoform "And" after the preparatory phase, all thermoformed this group produced a preliminary working voltage fittings manufactured concrete products. To do this in a pipeline system, open the valve 1A (the other valves closed) (see Fig. 1) and the coolant passing through line 3 and heated in the heater 5, flows through the collector 9 in termodeck thermoform 1 and further through the output manifold 10 hits in the reverse pipe line 8. It should be noted that for heating telenovela to Vyskov termoform, there are several modes of the heating furnace 5, depending on the number included in the heating gas burners.

So, at the initial filing of the high-temperature coolant in power termodeck thermoform 1 include a first heating mode (the lowest temperature of a heated fluid, for example 50o- 60oC), then within a few minutes the temperature was raised to a given, the inclusion of other modes of heating (increase the number of included gas burners).

In addition, the valves 17 to outlet pipes 15 input manifold 9 (see Fig. 6 - Fig. 9) differentially regulate the feed rate of the heated fluid termodeck thermoform (termonorte, thermodon) to obtain a uniform heating temperature and further the same thermal elongation. After the tension reinforcement technological transport trucks 2 (see Fig. 1) perform the packing, sealing and smoothing of concrete in thermoformed 1. Pre-concrete site in the bunker - betongindustri shop serves the concrete, which loads the next on the height of technological transport truck 2.

After concreting all thermoform 1 groix in shuttering compartment and compartment timocracy. For this purpose, close the valve 19 to open the valve 2A, 20, 21 and the refrigerant from line 4 serves in the heater 5, where the gearbox 6 regulate the rate of feed is heated in a single pipe line 7 and then through the collector 9 in thermoform 1 (see Fig. 1). From thermoform 1 already exhaust the refrigerant flows through the collector 10 in the return pipe line 8.

Periods of high temperature and isothermal heating mode, heat treatment of concrete to withstand the gear 6, which provides for the 1st stage of the required exit velocity of the heated refrigerant from the heater 5 and as a consequence, in the first approximation of its specified temperature in a pipe line 7.

Then on the 2nd stage, the precise temperature adjustable valves 18 input reservoir 9.

Heat treatment of the concrete products group thermoform "And" lead to the start of the cooling-off period of heat treatment, when required a continuous supply of high temperature fluid into the power termodeck thermoform 1. Up to this point in the second group thermoform "B" end of the preparatory stage and here translate system supplying heated fluid, closing the first valve 1A and opening-1B (see Fig. 1). the nelogicno group "A", in which at the end of isothermal heating mode of the heat treatment system of circulation of the refrigerant is transferred to the cooling mode, i.e., close valves 20, 21, opening 19 (see Fig. 1) and cold gas (air) from line 4, bypassing the heater 5, comes in line 7, then through the collector 9 in thermoform 1 and then from the collector 10 in line 8.

After a period of cooling the refrigerant circuit in a group thermoform "And" turn off and lead a casing made of concrete products with cutting off the loose ends of intense fixture special equipment included technological transport trolleys 2. These trucks concrete products transported and loaded on trucks for the export of finished products.

The use of the proposed workshop prestressed concrete products in comparison with prototypes provides efficiency in the following areas:

1. The use of a single pipeline of forward and reverse lines, as well as a single input and output manifolds, for simultaneous delivery to thermoformed and removal of the coolant and refrigerant, greatly simplifies the process line to produce a preliminary napryagetsya work.

2. The cross-section of a single pipelines and reservoirs, consisting of inner and outer pipes respectively for coolant and refrigerant, increases heat for the last and improves the quality of heat treatment of concrete manufactured products.

3. The presence of outlet pipes of a single input collectors adjustable valves can differentially regulate the feed rate of the coolant and refrigerant, as to obtain a uniform temperature in termodeck termoform, regardless of their cross-section, and the desired temperature of heat treatment of concrete.

4. The passage of supply refrigerant directly through the heater (gas oven) and heat the refrigerant in a tubular multi-row coils more economically and efficiently, and in line at the outlet of the heater reducer regulates the temperature of the released refrigerant.

5. The presence in the pipe line supplying refrigerant two speed controllers - reducer at the outlet of the heater and adjustable valves on a single input reservoirs allows you to adjust for the heat treatment of the concrete, the temperature of the heated refrigerant in two stages: the first stage - in tibetana.

Sources of information

1. Reference to the production of precast, M., stroiizdat, 1982, S. 300 - 306.

2. Prestressed and samonapryazhennye concrete in the United States, M., stroiizdat, 1974, S. 217 - 255.

1. Shop prestressed concrete products, consisting of stationary spaced sealed thermoform with lids for above-ground implementation of the basic technological operations are technological transport trucks, and to create a pre-stress in the working armature manufactured concrete products and for heat treatment of the concrete used production line, equipped respectively supply system in termodeck thermoform high-temperature heat carrier, equipped with a heater, and a refrigerant circuit of a shop air line shuttering compartment and compartment thermocrete termoform, while the straight line is connected with the shuttering compartment thermoform and outer hermetic shell of the heater high-temperature heat carrier, characterized in that that contains a single pipeline direct and inverse line and the common input and output manifold thermoform systems circulatory straight line passes directly through the heater high-temperature heat carrier and is provided with the output gear to adjust the pressure of facing the heated refrigerant.

2. Shop prestressed concrete products under item 1, characterized in that the single pipeline direct and inverse line and the common input and output manifold thermoform represent the cross-section of the pipe, i.e., consist of an inner and outer pipes for supplying, respectively, coolant and refrigerant, thus the output connections of the single input of the collectors thermoform provided with adjustable valves.

 

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SUBSTANCE: apparatus includes concrete form having electric heating units mounted in its boards for convection-irradiation heating of concrete mixture and heating members mounted in bottom of concrete form for convection-irradiation heating; temperature pickups having individual control circuits and connected to inlets of heat regulators. Outlets of heat regulators are connected through switching units having magnetic starters with respective electric heating units. Each control circuit includes at least six temperature pickups placed in monolithic construction and pickup for measuring temperature of environmental air. Said pickups are connected with inlets of respective programmed heat regulator for supplying control signals.

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3 cl, 4 dwg

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