CN112720818A - UHPC prefabricated part high-temperature steam curing system - Google Patents

Abstract

A high-temperature steam curing system for UHPC prefabricated parts mainly solves the technical problems of uneven temperature of each area, poor steam curing effect, high energy consumption and the like of the existing curing system. The key points of the technical scheme are as follows: the high-temperature steam curing room comprises a high-temperature steam curing room (1), a UHPC prefabricated part supporting device (2), a steam boiler system (3), an air circulation system (4) and a steam recovery pipeline (6), wherein the inside of the high-temperature steam curing room (1) is divided into a wind supply bin (1-1), a steam curing room (1-2) and a return air bin (1-3) by honeycomb pore plates (1-14), the wind supply bin (1-1) and the return air bin (1-3) are respectively communicated with the air circulation system (4), the UHPC prefabricated part supporting device (2) is arranged in the steam curing room (1-2), the wind supply bin (1-1) is communicated with the steam boiler system (3), one end of the steam recovery pipeline (6) is communicated with the steam boiler system (3), and the other end of the steam recovery pipeline (6) is communicated with the air circulation system (4).

Description

UHPC prefabricated part high-temperature steam curing system

Technical Field

The invention relates to a high-temperature steam curing system for a UHPC prefabricated part.

Background

The high-temperature steam curing of the UHPC prefabricated part is an important step for packaging the structural performance of the UHPC prefabricated part, and the prior steam curing has high energy consumption and uneven temperature distribution.

Disclosure of Invention

The invention aims to provide a high-temperature steam curing system for a UHPC prefabricated part, which has a simple structure and small temperature difference of each area, and can realize heat energy recycling and reduce energy consumption.

The technical scheme adopted by the invention for solving the technical problems is as follows: the high-temperature steam curing chamber comprises a high-temperature steam curing chamber 1, a UHPC prefabricated part supporting device 2, a steam boiler system 3, an air circulating system 4 and a steam recovery pipeline 6, wherein the inside of the high-temperature steam curing chamber 1 is divided into a wind feeding bin 1-1, a steam curing chamber 1-2 and a wind return bin 1-3 by honeycomb pore plates 1-14, the wind feeding bin 1-1 and the wind return bin 1-3 are respectively communicated with the air circulating system 4, the UHPC prefabricated part supporting device 2 is arranged in the steam curing chamber 1-2, the wind feeding bin 1-1 is communicated with the steam boiler system 3, one end of the steam recovery pipeline 6 is communicated with the steam boiler system 3, and the other end of the steam recovery pipeline is communicated with the air circulating system.

The automatic temperature control system 5 comprises a temperature sensor 5-1, an automatic temperature controller 5-2 and a control line 5-3, wherein the temperature sensor 5-1 is arranged in the steam curing room 1-2, and the automatic temperature controller 5-2 is connected with the temperature sensor 5-1 through the control line 5-3.

The high-temperature steam curing room 1 is formed by enclosing four side walls 1-11, a movable sealing heat-insulating cover is arranged at the top, the side walls 1-11 are sequentially composed of UHPC precast slabs, heat-insulating layers and brick walls from inside to outside, air supply channels 1-12 are arranged on the side walls 1-11 on the side of the air supply bin 1-1, and air return channels 1-13 are arranged on the side walls 1-11 on the side of the air return bin 1-3.

The air supply channels 1-12 and the air return channels 1-13 can be arranged by more than 2, air bin partition plates 1-15 are arranged in the air supply bin 1-1 and the air return bin 1-3, the air bin partition plates 1-15 are specifically arranged between the two adjacent air supply channels 1-12 or air return channels 1-13 to respectively divide the air supply bin 1-1 and the air return bin 1-3 into small bins with the same number as the air supply channels 1-12 and the air return channels 1-13, and the air bin partition plates 1-15 are impermeable plates.

The UHPC prefabricated part supporting device 2 is composed of more than 1 group of supporting components which are arranged in parallel, each group of supporting components comprises supporting upright columns 2-1 on two separate sides, the supporting upright columns 2-1 are arranged more than 1 group and are gradually increased from inside to outside in height, the same group of supporting upright columns 2-1 are consistent in height, and a rigid supporting beam 2-2 is erected on each group of supporting upright columns 2-1.

The steam boiler system 3 comprises a steam boiler group 3-1, a main steam pipeline 3-2 and a branch steam pipeline 3-3, one end of the main steam pipeline 3-2 is connected with the steam boiler group 3-1, the other end extends into the air supply bin 1-1, and is connected with a steam branch pipe 3-3 arranged in the air supply bin 1-1, the steam branch pipe 3-3 comprises an upper layer steam branch pipe 3-3-1 and a lower layer steam branch pipe 3-3-2, a plurality of steam outlets are respectively arranged on the upper layer steam branch pipe 3-3-1 and the lower layer steam branch pipe 3-3-2 at intervals, the steam outlet openings on the upper layer steam branch pipe 3-3-1 face the ground, the steam outlet hole of the lower steam branch pipe 3-3-2 faces the steam curing chamber 1-2.

An electromagnetic control steam valve 3-4 is arranged on the main steam pipeline 3-2 and is connected with an automatic temperature control system 5, and the automatic temperature control system 5 controls the opening and closing state of the electromagnetic control steam valve 3-4 to adjust the steam supply amount of the main steam pipeline 3-2.

The air circulation system 4 comprises an air supply bin outer air bin 4-1, an air return bin outer air bin 4-2, an air pipe 4-3 and a centrifugal fan 4-4, wherein the air supply bin outer air bin 4-1 is arranged beside the air supply bin 1-1, one end of the air supply bin outer air bin is communicated with the air supply bin 1-1 through an air supply pore passage 1-12, and the other end of the air supply bin outer air bin is connected with the air pipe 4-3; the air bin 4-2 outside the return air bin is arranged beside the return air bin 1-3, one end of the air bin is communicated with the return air bin 1-3 through a return air pore passage 1-13, and the other end of the air bin is connected with the centrifugal fan 4-4.

Two ends of the air pipe 4-3 are respectively communicated with an air supply bin outer air bin 4-1 and an air return bin outer air bin 4-2 through branch pipes, an inner adjusting air valve 4-5-2 is arranged on the air pipe 4-3, an external connecting adjusting air valve 4-5-1 is arranged on the branch pipe connected with the air supply bin outer air bin 4-1, and a steam recovery adjusting air valve 4-5-3 is arranged on the branch pipe connected with the air return bin outer air bin 4-2.

The invention has the beneficial effects that: when the temperature in the steam curing chamber begins to rise, the steam boiler system or the heat energy recycling system conveys high-temperature steam into the air supply bin, and the high-temperature steam forms a flow circulation loop in the steam curing chamber under the action of an air circulation system, so that the temperature of each area in the steam curing chamber is ensured to rise uniformly, and the relative temperature difference does not exceed 10 ℃; when the temperature in the steam curing chamber begins to be reduced, the high-temperature steam in the high-temperature steam curing chamber is transmitted to the heat energy recycling system under the action of the air circulating system and finally transmitted to the next high-temperature steam curing chamber to be operated, so that the temperature of each area of the steam curing chamber is reduced in a balanced manner, and the heat energy is recycled. The temperature control system adjusts the steam delivery capacity of the steam boiler system through data transmitted by the temperature sensors arranged in the steam curing chamber, and controls parameters such as temperature, temperature change rate and the like in the steam curing chamber so as to realize automatic control of the temperature in the steam curing chamber.

Drawings

Fig. 1 is a schematic structural view of the present invention.

FIG. 2 is a schematic view of the structure of a high-temperature steam curing chamber.

Fig. 3 is a schematic view of the structure of the steam boiler system.

Fig. 4 is a schematic structural view of an air circulation system.

Fig. 5 is a schematic view of the structure of the steam boiler system.

Fig. 6 is a view from direction i-i of fig. 5.

Fig. 7 is a schematic diagram of an automatic temperature control system.

Fig. 8 is a schematic structural view of the support system.

Fig. 9 is a side view of fig. 8.

1-high-temperature steam curing room, 1-1 air supply bin, 1-2 steam curing room, 1-3 return air bin, 1-11 side walls, 1-12 air supply channels, 1-13 return air channels, 1-14 honeycomb pore plates, 1-15 air bin partition plates, 2-UHPC prefabricated part supporting devices, 2-1 supporting upright posts, 2-2 rigid supporting beams, 3-steam boiler system, 3-1 steam boiler group, 3-2 main steam pipeline, 3-3 steam branch pipelines, 3-3-1 upper steam branch pipeline, 3-3-2 lower steam branch pipeline, 3-4 electromagnetic control steam valve, 4-air circulation system, 4-1 air supply bin outer air bin, 4-2 return air bin outer air bin, 4-3 air pipe and 4-4 centrifugal fan, 4-5-1 is connected with the outside and is provided with an adjusting air valve, 4-5-2 is provided with an internal adjusting air valve, 4-5-3 is provided with a steam recycling adjusting air valve, 5-a temperature automatic control system, 5-1 is provided with a temperature sensor, 5-2 is provided with a temperature automatic controller, 5-3 is provided with a control line and 6 is provided with a steam recycling pipeline.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Example 1, referring to fig. 1 to 9, the present invention comprises a high temperature steam curing chamber 1, a UHPC prefabricated part supporting device 2, a steam boiler system 3, an air circulation system 4, and a steam recovery pipe 6, wherein the inside of the high temperature steam curing chamber 1 is divided into a feeding chamber 1-1, a steam curing chamber 1-2, and a return chamber 1-3 by honeycomb pore plates 1-14, and the honeycomb pore plates 1-14 are densely distributed with pores having a diameter of 1-20mm and a spacing of 1-20 mm. The air supply bin 1-1 and the air return bin 1-3 are respectively communicated with an air circulation system 4, a UHPC prefabricated part supporting device 2 is arranged in the steam curing chamber 1-2, the air supply bin 1-1 is communicated with a steam boiler system 3, one end of a steam recovery pipeline 6 is communicated with the steam boiler system 3, and the other end of the steam recovery pipeline is communicated with the air circulation system 4. The high-temperature steam curing room 1 can be provided with a plurality of UHPC prefabricated parts which are sequentially arranged together, and the UHPC prefabricated parts are sequentially layered on a UHPC prefabricated part supporting system 2 of the steam curing room 1-2 from bottom to top for curing; when the temperature in the steam curing chamber 1-2 begins to rise, the steam boiler system 3 or the heat energy recycling system 6 conveys high-temperature steam into the air conveying bin 1-1, and the high-temperature steam forms a flowing circulating loop in the steam curing chamber 1-2 under the action of the air circulating system 4, so that the temperature of each area in the steam curing chamber 1-2 is ensured to rise uniformly, and the relative temperature difference does not exceed 10 ℃; when the temperature in the steam curing room 1-2 begins to be reduced, the high-temperature steam in the high-temperature steam curing room 1 is transmitted to the heat energy steam recovery pipeline 6 under the action of the air circulation system 4 and is finally transmitted to the next high-temperature steam curing room 1 to be operated, so that the temperature of each area of the steam curing room 1-2 is reduced in a balanced manner, and the heat energy is recycled.

Furthermore, the invention also comprises an automatic temperature control system 5, wherein the automatic temperature control system 5 comprises a temperature sensor 5-1, an automatic temperature controller 5-2 and a control line 5-3, the temperature sensor 5-1 is arranged in the steam-curing chamber 1-2, the automatic temperature controller 5-2 is connected with the temperature sensor 5-1 through the control line 5-3, more than 2 temperature sensors 5-1 can be arranged in each area of the steam-curing chamber 1-2 for measuring the temperature of each area of the steam-curing chamber 1-2 and transmitting data to the automatic temperature controller 5-2, the measurement error precision of the temperature sensor 5-1 is not more than 1 ℃, the automatic temperature controller 5-2 controls the opening or closing of the electromagnetic control steam valve 3-4 according to the set temperature parameters and the real-time transmitted values of the temperature sensor 5-1, the steam delivery capacity of the steam boiler system 3 is adjusted, and parameters such as the temperature, the temperature change rate and the like in the steam curing chamber 1-2 are controlled, so that the automatic control of the temperature in the steam curing chamber 1 is realized.

Example 2, see fig. 1 to 9, the rest being the same as example 1. The high-temperature steam curing room 1 is formed by enclosing four side walls 1-11, a movable sealed heat-insulating cover is arranged at the top, the side walls 1-11 are sequentially composed of UHPC precast slabs, heat-insulating layers and brick walls from inside to outside, pressure relief pipelines 1-5 can be arranged on the side walls 1-11 to communicate the inside and the outside of the side walls, automatic pressure relief valves 1-4 are arranged on the pressure relief pipelines on the outer sides of the side walls, and the pressure relief pipelines 1-5 can also be arranged on the sealed heat-insulating cover; further, the pressure relief pipe 1-5 can be communicated with a steam boiler, and a pressure regulating valve is arranged on the pressure relief pipe 1-5. The side wall 1-11 at the side of the air supply bin 1-1 is provided with an air supply pore channel 1-12, and the side wall 1-11 at the side of the air return bin 1-3 is provided with an air return pore channel 1-13. The number of the air supply pore channels 1-12 and the number of the air return pore channels 1-13 can be more than 2, the air supply bin 1-1 is internally provided with an air bin partition plate 1-15, and the air bin partition plate 1-15 is specifically arranged between two adjacent air supply pore channels 1-12 to divide the air supply bin 1-1 into small bins with the number consistent with that of the air supply pore channels 1-12; the air return bin 1-3 is internally provided with air bin partition boards 1-15, the air bin partition boards 1-15 are specifically arranged between two adjacent air return pore channels 1-13 to divide the air return bin 1-3 into small bins with the number consistent with that of the air return pore channels 1-13, and the air bin partition boards 1-15 are air impermeable plates.

Embodiment 3, see fig. 1-9, the remainder of the disclosure being similar to the previous embodiments. The UHPC prefabricated part supporting device 2 is composed of more than 1 group of supporting assemblies which are arranged in parallel, each group of supporting assemblies comprises supporting upright columns 2-1 at two separate sides, the supporting upright columns 2-1 are arranged more than 1 group and are increased in height from inside to outside, the height of the same group of supporting upright columns 2-1 is consistent, a rigid supporting beam 2-2 is erected on each group of supporting upright columns 2-1, each rigid supporting beam 2-2 is composed of section steel with very high rigidity, one UHPC prefabricated plate is sequentially placed on each rigid supporting beam 2-2, and the deformation of the prefabricated plates after being placed is not more than 5 mm. Therefore, the UHPC prefabricated part supporting device 2 is divided into a plurality of layers, the UHPC prefabricated plates are sequentially placed on each layer of the UHPC prefabricated part supporting device 2 from bottom to top, and all the layers are not connected. The number of the supporting upright columns 2-1 is set according to the number of the UHPC precast slabs.

Embodiment 4, see fig. 1-9, the remainder of the above embodiment. The steam boiler system 3 comprises a steam boiler group 3-1, a main steam pipeline 3-2 and a branch steam pipeline 3-3, one end of the main steam pipeline 3-2 is connected with the steam boiler group 3-1, the other end extends into the air supply bin 1-1, and is connected with a steam branch pipe 3-3 arranged in the air supply bin 1-1, the steam branch pipe 3-3 comprises an upper layer steam branch pipe 3-3-1 and a lower layer steam branch pipe 3-3-2, a plurality of steam outlets are respectively arranged on the upper layer steam branch pipe 3-3-1 and the lower layer steam branch pipe 3-3-2 at intervals, the steam outlet openings on the upper layer steam branch pipe 3-3-1 face the ground, the steam outlet hole of the lower steam branch pipe 3-3-2 faces the steam curing chamber 1-2. An electromagnetic control steam valve 3-4 is arranged on the main steam pipeline 3-2 and is connected with an automatic temperature control system 5, and the automatic temperature control system 5 controls the opening and closing state of the electromagnetic control steam valve 3-4 to adjust the steam supply amount of the main steam pipeline 3-2. Furthermore, the steam boiler group 3-1 is provided with a plurality of steam boilers which are combined together to respectively supply high-temperature steam to the high-temperature steam curing room 1 group, and the steam main pipeline 3-2 can be buried and laid.

Embodiment 5, see fig. 1-9, for the remainder of the above-described embodiments. The air circulation system 4 comprises an air supply bin outer air bin 4-1, an air return bin outer air bin 4-2, an air pipe 4-3 and a centrifugal fan 4-4, wherein the air supply bin outer air bin 4-1 is arranged beside the air supply bin 1-1, one end of the air supply bin outer air bin is communicated with the air supply bin 1-1 through an air supply pore passage 1-12, the other end of the air supply bin outer air bin is connected with the air pipe 4-3 to form a closed space, and the space capacity can meet the transitional storage of steam circulation; the air bin 4-2 outside the return air bin is arranged beside the return air bin 1-3 and is a closed space, the space capacity can meet the transitional storage of steam circulation, one end of the air bin is communicated with the return air bin 1-3 through a return air duct 1-13, and the other end of the air bin is connected with the centrifugal fan 4-4. The air pipe 4-3 is a square or round pipe and is composed of high-temperature resistant pipes, and the outside of the pipe is coated with heat insulation materials. The centrifugal fan 4-4 is used for accelerating the circulation flow of high-temperature steam, and the efficiency of the centrifugal fan needs to meet the requirement of the change of the temperature rising rate and the temperature reducing rate in the steam curing chamber 1-2. Two ends of an air pipe 4-3 are respectively communicated with an air supply bin outer air bin 4-1 and an air return bin outer air bin 4-2 through branch pipes, an inner adjusting air valve 4-5-2 is arranged on the air pipe 4-3, an external connecting adjusting air valve 4-5-1 is arranged on the branch pipe connected with the air supply bin outer air bin 4-1, a steam recovery adjusting air valve 4-5-3 is arranged on the branch pipe connected with the air return bin outer air bin 4-2, and the steam flow in the high-temperature steam curing room 1 or the exchange between the high-temperature steam curing room 1 and the adjacent high-temperature steam curing room 1 can be realized by adjusting the opening or closing of each air valve. When the steam curing chamber 1-2 starts to heat up, closing the adjusting air valve 3-5-1 connected with the outside and the steam recovery adjusting air valve 3-5-3, and simultaneously opening the internal adjusting air valve 3-5-2; when the steam curing room 1-2 begins to cool, the internal adjusting air valve 3-5-2 is closed, and the external adjusting air valve 3-5-1 and the steam recovery adjusting air valve 3-5-3 are opened.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. A UHPC prefabricated part high-temperature steam curing system is characterized in that: the high-temperature steam curing room comprises a high-temperature steam curing room (1), a UHPC prefabricated part supporting device (2), a steam boiler system (3), an air circulation system (4) and a steam recovery pipeline (6), wherein the inside of the high-temperature steam curing room (1) is divided into a wind supply bin (1-1), a steam curing room (1-2) and a return air bin (1-3) by honeycomb pore plates (1-14), the wind supply bin (1-1) and the return air bin (1-3) are respectively communicated with the air circulation system (4), the UHPC prefabricated part supporting device (2) is arranged in the steam curing room (1-2), the wind supply bin (1-1) is communicated with the steam boiler system (3), one end of the steam recovery pipeline (6) is communicated with the steam boiler system (3), and the other end of the steam recovery pipeline (6) is communicated with the air circulation system (4).

2. The high temperature steam curing system of UHPC prefabricated parts according to claim 1, wherein is: the automatic temperature control system (5) is further included, the automatic temperature control system (5) comprises a temperature sensor (5-1), an automatic temperature controller (5-2) and a control line (5-3), the temperature sensor (5-1) is arranged in the steam curing room (1-2), and the automatic temperature controller (5-2) is connected with the temperature sensor (5-1) through the control line (5-3).

3. A UHPC prefabricated part high-temperature steam curing system according to claim 1 or 2, wherein is: the high-temperature steam curing room (1) is formed by enclosing four side walls (1-11), a movable sealing heat-insulating cover is arranged at the top of the high-temperature steam curing room, the side walls (1-11) sequentially consist of UHPC prefabricated plates, heat-insulating layers and brick walls from inside to outside, air supply channels (1-12) are arranged on the side walls (1-11) on the side of the air supply bin (1-1), and air return channels (1-13) are arranged on the side walls (1-11) on the side of the air return bin (1-3).

4. A UHPC preform high temperature steam curing system of claim 3 wherein: the air supply channels (1-12) and the air return channels (1-13) can be arranged in more than 2, air bin partition plates (1-15) are arranged in the air supply bin (1-1) and the air return bin (1-3), the air bin partition plates (1-15) are specifically arranged between the two adjacent air supply channels (1-12) or air return channels (1-13) to divide the air supply bin (1-1) and the air return bin (1-3) into small bins with the same number as the air supply channels (1-12) and the air return channels (1-13), and the air bin partition plates (1-15) are air impermeable plates.

5. A UHPC prefabricated part high-temperature steam curing system according to claim 1 or 2, wherein is: the UHPC prefabricated part supporting device (2) is composed of more than 1 group of supporting components which are arranged in parallel, each group of supporting components comprises supporting upright columns (2-1) on two separate sides, the supporting upright columns (2-1) are arranged more than 1 group and are gradually increased from inside to outside in height, the height of the same group of supporting upright columns (2-1) is consistent, and a rigid supporting beam (2-2) is erected on each group of supporting upright columns (2-1).

6. A UHPC prefabricated part high-temperature steam curing system according to claim 1 or 2, wherein is: the steam boiler system (3) comprises a steam boiler group (3-1), a main steam pipeline (3-2) and a branch steam pipeline (3-3), one end of the main steam pipeline (3-2) is connected with the steam boiler group (3-1), the other end of the main steam pipeline extends into the air supply bin (1-1) and is connected with the branch steam pipeline (3-3) arranged in the air supply bin (1-1), the branch steam pipeline (3-3) comprises an upper branch steam pipeline (3-3-1) and a lower branch steam pipeline (3-3-2), a plurality of steam outlets are arranged on the upper branch steam pipeline (3-3-1) and the lower branch steam pipeline (3-3-2) at intervals, steam outlets on the upper branch steam pipeline (3-3-1) face the ground, the steam outlet hole of the lower steam branch pipe (3-3-2) faces the steam curing chamber (1-2).

7. The high temperature steam curing system of UHPC prefabricated parts according to claim 6, wherein is: an electromagnetic control steam valve (3-4) is arranged on the main steam pipeline (3-2) and is connected with an automatic temperature control system (5), and the automatic temperature control system (5) controls the opening and closing states of the electromagnetic control steam valve (3-4) to adjust the steam supply amount of the main steam pipeline (3-2).

8. A UHPC prefabricated part high-temperature steam curing system according to claim 1 or 2, wherein is: the air circulation system (4) comprises an air supply bin outer air bin (4-1), an air return bin outer air bin (4-2), an air pipe (4-3) and a centrifugal fan (4-4), wherein the air supply bin outer air bin (4-1) is arranged beside the air supply bin (1-1), one end of the air supply bin outer air bin is communicated with the air supply bin (1-1) through an air supply pore passage (1-12), and the other end of the air supply bin outer air bin; the air bin (4-2) outside the return air bin is arranged beside the return air bin (1-3), one end of the air bin is communicated with the return air bin (1-3) through a return air pore passage (1-13), and the other end of the air bin is connected with the centrifugal fan (4-4).

9. The UHPC preform high temperature steam curing system of claim 8, wherein the system is: two ends of the air pipe (4-3) are respectively communicated with an air supply bin outer air bin (4-1) and an air return bin outer air bin (4-2) through branch pipes, an internal adjusting air valve (4-5-2) is arranged on the air pipe (4-3), an external connecting adjusting air valve (4-5-1) is arranged on the branch pipe connected with the air supply bin outer air bin (4-1), and a steam recovery adjusting air valve (4-5-3) is arranged on the branch pipe connected with the air return bin outer air bin (4-2).

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