CN211472685U - Large-volume concrete temperature control water-cooling circulation reversing control system - Google Patents

Abstract

The utility model belongs to the civil engineering field, concretely relates to bulky concrete control by temperature change water cooling circulation switching-over control system, including first tee bend switching-over valve and second tee bend switching-over valve, first tee bend switching-over valve includes that A import, B export and C export, second tee bend switching-over valve includes that D import, E import and F export, the B export links to each other with the D import through first pipeline, the C export links to each other with the E import through the second pipeline, parallelly connected being equipped with a plurality of third pipelines that are arranged in the inside cooling that is used for of bulky concrete between first pipeline, the second pipeline. The utility model has the advantages that: the utility model discloses can realize carrying out effective control to bulky concrete circulation cooling, through the state of the first tee bend switching-over valve of timing control, second tee bend switching-over valve, realize that the timing switching-over of recirculated cooling water is to the inside circulation cooling of concrete.

Description

Large-volume concrete temperature control water-cooling circulation reversing control system

Technical Field

The utility model belongs to the civil engineering field, concretely relates to bulky concrete control by temperature change water-cooling circulation switching-over control system.

Background

The control of the temperature of the large-volume concrete pouring is an important link in engineering technology management, and the current control measures of the temperature of the large-volume concrete pouring are mainly that a cooling pipeline is arranged in a core body before pouring, cooling water enters the core body through external pressure and absorbs and transfers the hydration heat of the concrete after circulation. One adopts an internal circulation mode, namely circulating water enters a cooling pool and then is pressurized again to enter a cooling pipeline; the other is an external circulation mode, namely circulating water is directly discharged after being circularly heated, and the water inlet of a cooling pipeline is always cold water.

The main problems of the cooling measures are as follows:

1. the temperature difference between the warehousing pipeline and the warehousing pipeline is large, the temperature difference is large when the temperature reduction rate of the initial section is high, and the high-temperature area of the core body and the low-temperature area at the periphery of the pipe wall form a stress concentration area. The temperature difference is reduced due to the rising of the water temperature near the delivery section, the cooling effect is poor, the concentrated temperature rise of the hydration heat is too high, and the allowable temperature difference exceeds the specification;

2. the whole cooling effect is poor, the temperature difference in the surface of the concrete is easy to be overlarge, and the stress crack on the surface of the concrete is formed;

3. the accessible is regularly to trading cooling water business turn over interface to improve the cooling effect and reduce the business turn over section difference in temperature, but have the pipeline that presses to convert and need to shut down and stop the pump, and leakage, take off the pipe scheduling problem often appear in the scene.

4. The cooling needs 24 hours of circulation, usually lasts for about 7-15 days, when a plurality of working face multi-channel pipelines are operated in parallel, the conversion difficulty is large, the labor and the time are wasted, the work efficiency is extremely low,

5. the problems of circulating water temperature measurement, flow measurement, heat capacity calculation and the like cannot be accurately mastered.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a bulky concrete control by temperature change water cooling circulation switching-over control system, can realize carrying out effective control to bulky concrete circulation cooling, through the first tee bend switching-over valve of timing control, the state of second tee bend switching-over valve, realize that the timing switching-over of recirculated cooling water is to concrete inside circulation cooling, make bulky concrete whole keep the temperature balanced and last constant speed cooling, ensure that the cooling water of bulky concrete is imported and exported, the difference in temperature all controls in standardizing the allowed range in the table, thereby guarantee concrete placement quality.

The utility model provides a following technical scheme:

the utility model provides a bulky concrete control by temperature change water-cooling circulation switching-over control system, includes first tee bend switching-over valve and second tee bend switching-over valve, first tee bend switching-over valve includes A import, B export and C export, second tee bend switching-over valve includes D import, E import and F export, the B export links to each other with the D import through first pipeline, the C export links to each other with the E import through the second pipeline, parallelly connected being equipped with a plurality of third pipelines that are arranged inside being used for the cooling at bulky concrete between first pipeline, the second pipeline.

Preferably, the control system further comprises a water inlet main valve and a backflow main valve, the inlet A is connected with the water inlet main valve through a fourth pipeline, and the outlet F is connected with the backflow main valve through a fifth pipeline.

Preferably, a first temperature and pressure integrated meter is arranged on the fourth pipeline, and a second temperature and pressure integrated meter is arranged on the fifth pipeline.

Preferably, a flow meter is further arranged on the fourth pipeline.

Preferably, a stop valve is arranged on the third pipeline.

Preferably, the first three-way reversing valve, the second three-way reversing valve and the stop valve are all electric control valves.

Preferably, the first temperature and pressure integrated meter, the second temperature and pressure integrated meter and the flow meter are all provided with a data wireless transmission unit.

The utility model has the advantages that:

1. the utility model discloses can realize carrying out effective control to bulky concrete circulation cooling, through the state of timing control first tee bend switching-over valve, second tee bend switching-over valve, realize that the cooling water of recirculating cools the concrete inside in a definite time and commutate, make bulky concrete whole keep temperature equilibrium and last constant speed cooling, guarantee that the cooling water of bulky concrete imports and exports, the difference in temperature in the surface and the lining is all controlled in the standard allowed range to guarantee concrete placement quality;

2. the direct reversing of the circulating cooling water inlet and outlet pipelines can be realized only by adjusting valves, the complex work of manual frequent switching, pipeline leakage and the like is solved, the labor intensity is greatly reduced, and the labor cost is reduced;

3. all be equipped with data wireless transmission unit on the integrative meter of first warm-pressing, the integrative meter of second warm-pressing, the flowmeter, first tee bend switching-over valve, second tee bend switching-over valve, stop valve are automatically controlled valve can realize the full automatic operation of control system unmanned on duty and the long-range wireless monitoring of full-process monitoring data.

Drawings

FIG. 1 is a schematic structural diagram of a control system when a first three-way directional valve and a second three-way directional valve are in a first state, wherein arrows indicate water flow directions;

fig. 2 is a schematic structural diagram of the control system when the first three-way reversing valve and the second three-way reversing valve are in a first state, wherein arrows indicate the water flow direction.

The designations in the drawings have the following meanings:

1-first three-way reversing valve 11-A inlet 1112-B outlet 13-C outlet 2-second three-way reversing valve 21-D inlet 22-E inlet 23-F outlet 3-first pipeline 4-second pipeline 5-third pipeline 51-stop valve 6-water inlet main valve 7-reflux main valve 8-fourth pipeline 81-first temperature and pressure integrated meter 82-flowmeter 9-fifth pipeline 91-second temperature and pressure integrated meter

Detailed Description

The present invention will be described in detail with reference to the following embodiments.

Example 1

As shown in fig. 1 and 2, a temperature-controlled water-cooling circulation reversing control system for mass concrete comprises a first three-way reversing valve 1 and a second three-way reversing valve 2, wherein the first three-way reversing valve comprises an inlet 11, an outlet 12 and an outlet 13, the second three-way reversing valve 2 comprises an inlet 21, an inlet 22 and an outlet 23, the outlet 12 is connected with the inlet 21 through a first pipeline 3, the outlet 13 is connected with the inlet 22 through a second pipeline 4, a plurality of third pipelines 5 arranged inside the mass concrete for cooling are arranged between the first pipeline 3 and the second pipeline 4 in parallel, and the number of the third pipelines 5 is determined by a person skilled in the art according to actual conditions on site.

Example 2

On the basis of embodiment 1, the control system further comprises a water inlet main valve 6 and a return main valve 7, wherein the inlet A11 is connected with the water inlet main valve 6 through a fourth pipeline 8, and the outlet F23 is connected with the return main valve 7 through a fifth pipeline 9.

Example 3

On the basis of embodiment 2, a first temperature and pressure integrated meter 81 is arranged on the fourth pipeline 8, and a second temperature and pressure integrated meter 91 is arranged on the fifth pipeline 9.

Example 4

In addition to embodiment 3, a flow meter 82 is further provided on the fourth pipe 8.

Example 5

In addition to embodiment 1, a shutoff valve 51 is provided in the third duct 5.

Example 6

On the basis of the embodiment 5, the first three-way reversing valve 1, the second three-way reversing valve 2 and the stop valve 51 are all electric control valves.

Example 7

In embodiment 4, the first pressure and temperature integrating meter 81, the second pressure and temperature integrating meter 91, and the flow meter 82 are each provided with a data wireless transmission unit.

The working process of the utility model is as follows:

in an initial state (state one), an inlet 11 and an outlet 12A of the first three-way reversing valve 1 are in a communicated state, an outlet 13C is in a closed state, an inlet 22 and an outlet 23E of the second three-way reversing valve 2 are in a communicated state, an inlet 21D of the second three-way reversing valve 2 is in a closed state, cooling water sequentially passes through a main water inlet valve 6, a first warm-pressure integrated meter 81, a flowmeter 82, the inlet 11A and the outlet 12B to enter a first pipeline 3, then is divided into a plurality of third pipelines 5 which are connected in parallel and arranged in mass concrete for cooling, and finally sequentially passes through the inlet 22, the outlet 23F, a second warm-pressure integrated meter 91 and a main backflow valve 7;

the initial state (state one) is changed into a state two within a set time, at the moment, an inlet 11 and an outlet 13A of the first three-way reversing valve 1 are in a communicated state, an outlet 12B is in a closed state, an inlet 21 and an outlet 23D of the second three-way reversing valve 2 are in a communicated state, an inlet 22E is in a closed state, cooling water sequentially passes through a main water inlet valve 6, a first temperature and pressure integrated meter 81, a flowmeter 82, the inlet 11A and the outlet 13C of the second three-way reversing valve 2 to enter a second pipeline 4, then is divided into a plurality of third pipelines 5 which are connected in parallel and arranged in mass concrete for cooling, and finally passes through the inlet 21D, the outlet 23F, a second temperature and pressure integrated meter 91 and a main reflux valve 7;

the state is changed into the state two, and the number of times and the time interval of the change are selected by the technicians according to the actual field environment when the state is changed from the state two into the state one.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. 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 (7)

1. The utility model provides a bulky concrete temperature control water-cooling circulation switching-over control system, its characterized in that, includes first tee bend switching-over valve (1) and second tee bend switching-over valve (2), first tee bend switching-over valve (1) is including A inlet (11), B export (12) and C export (13), second tee bend switching-over valve (2) are including D inlet (21), E import (22) and F export (23), B export (12) link to each other with D import (21) through first pipeline (3), C export (13) link to each other with E import (22) through second pipeline (4), parallelly connected being equipped with a plurality of third pipeline (5) of arranging inside being used for the cooling at bulky concrete between first pipeline (3), second pipeline (4).

2. The reversing control system for the temperature-controlled water-cooling circulation of the mass concrete according to claim 1, characterized in that the control system further comprises a water inlet main valve (6) and a return main valve (7), the A inlet (11) is connected with the water inlet main valve (6) through a fourth pipeline (8), and the F outlet (23) is connected with the return main valve (7) through a fifth pipeline (9).

3. The large-volume concrete temperature-control water-cooling circulation reversing control system according to claim 2, wherein a first temperature-pressure integrated meter (81) is arranged on the fourth pipeline (8), and a second temperature-pressure integrated meter (91) is arranged on the fifth pipeline (9).

4. A large volume concrete temperature control water cooling circulation reversing control system according to claim 3, characterized in that a flow meter (82) is further arranged on the fourth pipeline (8).

5. A temperature-controlled water-cooling circulation reversing control system for mass concrete according to claim 1, characterized in that a stop valve (51) is arranged on the third pipeline (5).

6. The large-volume concrete temperature-controlled water-cooling circulation reversing control system according to claim 5, wherein the first three-way reversing valve (1), the second three-way reversing valve (2) and the stop valve (51) are all electric control valves.

7. The large-volume concrete temperature-control water-cooling circulation reversing control system according to claim 4, wherein the first temperature-pressure integrated meter (81), the second temperature-pressure integrated meter (91) and the flow meter (82) are respectively provided with a data wireless transmission unit.

Images