KR20110081684A - Vacuum saturation apparatus - Google Patents

Abstract

PURPOSE: A vacuum saturation apparatus is provided to automatize saturation process of concrete and saturate plural concrete pieces. CONSTITUTION: A vacuum saturation apparatus(100) of concrete comprises: a container(110) containing concrete; a transport part which has a lid(121) of the container and a cylinder member and closes and opens the opening part of the container; a vaccum part which is connected to the lid; and a water supply tank for supplying water to the container.

Description

Vacuum Saturation Apparatus capable of distinguishing saturation solutions of concrete specimens {Vacuum Saturation Apparatus}

The present invention relates to a saturation apparatus for saturating concrete specimens using various durability test solutions, including distilled water, as a pretreatment process for various durability tests. The present invention relates to a vacuum saturation device for concrete specimens, which can be tested by distinguishing saturation solutions into a plurality of species, and configured to facilitate the action of the fixing device.

In the method for evaluating the durability of concrete such as chlorine ion penetration resistance test of concrete, chemical resistance test of concrete using various chemical solutions or artificial seawater, promotion of durability test, etc. In the course of the evaluation, it is necessary to saturate the concrete specimens with the solution for durability testing.

For example, in order to perform the chlorine ion penetration resistance test according to KS F 2711, the concrete specimen must first be saturated, chemical resistance test, reinforcement corrosion test using a solution containing sodium chloride, sodium chloride, calcium chloride, potassium chloride, etc. For seawater resistance tests using artificial seawater, it is necessary to saturate the concrete specimens with magnesium sulfate or sodium sulfate solution.

Conventionally, the concrete specimen is placed in a desiccator connected to a vacuum pump to saturate the concrete specimen, and the inside of the desiccator is filled with various durability test solutions including distilled water (hereinafter, abbreviated as "saturated solution"). Is kept in vacuum. By maintaining the above conditions for about 24 hours, the concrete specimen is completely saturated.

However, in the related art, many problems have arisen because the vacuum saturation process has to be performed manually. As a representative problem, the manpower consumption is large, and a plurality of desiccators and vacuum pumps are required to saturate a plurality of concrete specimens.

In addition, since only one type of saturated solution can be used as a device, its use is limited.

The present invention has been invented to solve the problems of the prior art as described above, and an object thereof is to provide a highly reliable and automated vacuum saturation device for saturating concrete specimens.

It is also an object of the present invention to provide a vacuum saturation device configured to saturate a plurality of concrete specimens at the same time.

It is also an object of the present invention to provide a vacuum saturation device configured to saturate concrete specimens using a plurality of saturated solutions in one device.

Vacuum saturation device of the present invention for achieving the above object, the container to put the concrete specimen; A conveying part mounted with a lid of the container and having a cylinder member which moves the shaft in an up and down direction by pneumatic or hydraulic pressure to lift and lower the lid by the operation of the cylinder member to close or open the opening of the container; A vacuum unit connected to the lid; A water supply tank connected to the lid to supply water to the container; And a transfer part mounted to the outside, a door configured to receive the vacuum part and the water supply tank, and a control unit for controlling the operation of the vacuum part and the water supply tank. And a housing having a structure in which a switch unit for inputting a signal to the control unit is mounted.

The present invention has a structure in which a plurality of recesses are formed in the inner wall of the container according to the height, and each of the recesses has a structure in which shelves are arranged, and a plurality of shelves are provided in one container, It may be configured to test a plurality of specimens simultaneously by placing the specimens on a shelf.

In addition, the present invention is provided with a longitudinal partition wall in the water supply tank, the interior partition is partitioned by the longitudinal partition wall, each partition is contained different kinds of saturated solution, different types of saturated solution It may also be configured to test the specimen.

In addition, according to a preferred embodiment of the present invention, the housing, the door is formed to accommodate the vacuum portion and the water storage portion, a control unit for controlling the operation of the vacuum portion and the water storage unit is built-in The door is equipped with a switch unit for inputting a signal to the control unit.

In addition, according to a preferred embodiment of the present invention, a drain pipe is formed on the upper surface of the enclosure to drain outside the enclosure.

In addition, according to a preferred embodiment of the present invention, a porous plate member is located on the upper surface of the housing.

Further, according to a preferred embodiment of the present invention, a ball caster is mounted on the bottom of the enclosure.

In addition, according to a preferred embodiment of the present invention, the lid is equipped with a pressure gauge to measure the internal pressure of the container sealed by the lid.

In addition, according to a preferred embodiment of the present invention, two couplers are formed on the upper surface of the lid, one coupler is coupled to the vacuum hose extending from the vacuum portion, the other coupler is extended from the water supply tank The water supply hose is combined.

In addition, according to a preferred embodiment of the present invention, a groove is formed in the upper surface of the housing corresponding to the lid, the container is seated in the groove.

In addition, according to a preferred embodiment of the present invention, the vacuum unit, a vacuum pump, a vacuum tank connected to the vacuum pump, and the water flowing between the vacuum pump and the vacuum tank flows from the vacuum tank to the vacuum pump And a vacuum trap for collecting the vacuum hose extending from the vacuum tank to the lid.

In addition, according to a preferred embodiment of the present invention, the water supply tank includes a water level sensor and a solenoid valve installed in the water supply hose to open and close the water supply hose by an electrical signal generated by the water level detection sensor.

In addition, according to a preferred embodiment of the present invention, the housing is provided with a plurality of transfer parts, the water supply tank is divided into as many cells as the transfer portion, corresponding to the saturated solution filled in each cell through the water supply hose Water the feed section.

In addition, according to a preferred embodiment of the present invention, the vacuum hose is equipped with a solenoid valve, the switch unit includes a main switch for operating the vacuum unit, and an operation switch for operating a solenoid valve mounted to the vacuum hose. .

In addition, according to a preferred embodiment of the present invention, the container is a cylindrical structure that is open to the top, the bent flange is formed on the open top, the groove along the circumference so that the rubber ring can be fitted on the upper surface of the flange Is formed, the inner bottom surface of the container is formed with three or more projections on which the concrete specimen can be raised.

As described above, in the vacuum saturation apparatus of the present invention, when the concrete specimen is put into the container and the container is closed, pressing the operation button automatically maintains the inside of the container in a vacuum state and a saturated solution is filled in the container. After 24 hours, the vacuum is released. Therefore, the automated vacuum saturation apparatus of the present invention can reduce the manpower for the saturation work of the concrete specimen.

In addition, the vacuum saturation apparatus of the present invention can maintain a uniform vacuum state, high reliability for saturated concrete specimens.

In addition, the vacuum saturation apparatus of the present invention has the advantage that it can saturate a plurality of concrete specimens at the same time.

1 is a front view showing a vacuum saturation device according to the present invention,
2 is a plan view of the vacuum saturation device shown in FIG.
3 is a perspective view of the vacuum saturation apparatus shown in FIG.
4 is a front sectional view showing a state in which the door of the vacuum saturation device shown in FIG. 1 is opened;
Figure 5a is a side cross-sectional view showing a closed state of the container shown in FIG.
Figure 5b is a side cross-sectional view showing an open state of the container shown in Figure 5a,
Figure 5c is a side cross-sectional view showing a state in which a plurality of specimens placed in the container,
5D is a plan view of the interior of the container showing the arrangement for placing a shelf in the container.
6 is a cross-sectional view of one embodiment of a vacuum trap that may be used in the present invention.
FIG. 7 is a schematic diagram of a system capable of supplying refrigerant to the refrigerant passage of the trap container shown in FIG. 6 and defrosting the refrigerant passage surface.
Figure 8 is a schematic plan cross-sectional view of one embodiment of a water supply tank used in the present invention.

Hereinafter, with reference to the accompanying drawings a preferred embodiment of the vacuum saturation device according to the present invention will be described in detail.

1 is a front view of a vacuum saturation device according to the present invention, FIG. 2 is a plan view of the vacuum saturation device shown in FIG. 1, and FIG. 3 is a perspective view of the vacuum saturation device shown in FIG. 4 is a schematic view showing the internal structure of the vacuum saturation device shown in FIG.

As shown in Figures 1 to 4, the vacuum saturation apparatus 100 is equipped with a container 110 to put the concrete specimen 101, the lid 121 of the container 110 is mounted and the lid 121 A transfer part 120 for closing the opening of the container 110 by moving downward and moving upward to open the container 110, a vacuum part 130 connected to the lid 121, and the lid 121. It is connected to the) includes a water supply tank 140 for supplying a saturated solution to the container (110). In addition, the vacuum unit 130 and the water supply tank 140 are located inside the enclosure 150 and the transfer unit 120 is installed on the upper surface of the enclosure 150.

Hereinafter, the vacuum saturation device configured as described above will be described in detail.

As shown in FIGS. 1 to 4, the vacuum unit 130 and the water supply tank 140 are positioned inside the enclosure 150, and a plurality of transfer units 120 are disposed on the upper surface of the enclosure 150. Are arranged in plural in the longitudinal direction. A door 151 is formed at the front of the enclosure 150, and the vacuum unit 130 and the water supply tank 140 located therein are exposed to the outside as the door 151 is opened. The switch 153 is mounted to the door 151, and a programmable logic controller (PLC) is positioned inside the door 151.

The transfer unit 120 is located at the rear side from the upper surface of the housing 150, the drain pipe 155 is connected to the upper edge of the housing 150 is configured to drain the saturated solution flowing to the upper surface. In addition, a porous plate member 158 is located in front of the upper surface of the housing 150, the ball caster 159 is mounted on the bottom of the housing 150 can easily move the housing 150.

FIG. 5A is a side cross-sectional view showing an open state of the container 110 shown in FIG. 1, FIG. 5B is a side cross-sectional view showing a sealed state of the container shown in FIG. 5A, and FIG. 5C is a plurality of specimens in the container. Fig. 5D is a plan view of the inside of the container showing the arrangement for arranging the shelf in the container. As shown in FIGS. 5A and 5B, the transfer part 120 includes a bracket 122 fixed to the upper surface of the housing 150, a cylinder member 123 that expands and contracts the shaft 124 by air pressure or hydraulic pressure, and the cylinder. It includes a shaft 124 to move in the vertical direction by the operation of the member 123, and a lid 121 fixed to the lower end of the shaft 124.

The bracket 122 has a structure in which a middle length thereof is bent at a right angle, one end of the bracket 122 is fixed to the housing 150, and the other end of the bracket 122 is mounted with a cylinder member 123. The cylinder member 123 moves the shaft 124 in the vertical direction by air pressure or hydraulic pressure. When the shaft 124 is moved downward, the lid 121 is moved downward while pressing the container 110 located under the lid 121 to close the lid 121 and the lid 121 is moved upward when the shaft 124 is moved upward. Open the container 110 while moving to.

The upper surface of the housing 150 is formed with a groove 157 in the place where the container 110 is placed, the container 110 seated in the groove 157 is positioned to exactly correspond to the lid 121. The pressure gauge 126 is mounted on the top surface of the lid 121, and two couplers 127 are formed. Here, one coupler 127 is coupled to the vacuum hose 131 extending from the vacuum unit 130, the other coupler 127 is coupled to the water supply hose 141 extending from the water supply tank 140.

On the other hand, the container 110 is a cylindrical structure which is open upward, the open top is formed with a flange 111 bent outwards, the groove is formed in the upper surface of the flange 111 so that the rubber ring 113 can be fitted It is formed along the circumference. In addition, the inner bottom surface of the container 110 is provided with a plurality of protrusions 117 on which the concrete specimen 101 can be placed. The projection 117 is preferably three or more as shown in the figure, by mounting the concrete specimen 101 on such a projection 117, the bottom of the concrete specimen 101 and the bottom of the container 110. Only the projection 117 can be point-contacted effectively and uniformly saturated without this front contact.

Meanwhile, in the present invention, a plurality of shelves 115 may be disposed in the container 110 as illustrated in FIG. 5C. FIG. 5D shows a plan view of the interior of the container 110 showing the arrangement for arranging the shelf, as shown in the figure, forming a recess 119 in the wall surface of the container 110 (left view in FIG. 5D). The shelf is placed so as to span the recess 119 (center view of FIG. 5D), and the specimen 101 is placed on the shelf 115 (right view of FIG. 5D). According to such a configuration, a plurality of shelves may be installed in one container 110, and the specimens 101 may be placed on each shelf to test the plurality of specimens 101 at the same time.

After the container 110 is seated in the groove 157 formed on the upper surface of the housing 150, the lever 123 is pivoted downward to move the lid 121 downward to the upper surface of the container 110. While being compressed, the container 110 is sealed by the lid 121.

On the other hand, the vacuum unit 130 installed inside the housing 150 is a vacuum tank 133, the vacuum tank 135, the vacuum hose 131 connected to the lid 121 is extended and communicated with, the vacuum trap 137 and a solenoid valve 131V mounted to the vacuum hose 131. A vacuum hose 131 extending from each transfer part 120 is connected to the vacuum tank 135 to vacuum the inside of the container 110. The vacuum trap 137 removes moisture contained in the air introduced through the vacuum hose 131 to extend the life of the vacuum pump 133.

In FIG. 6, an embodiment of the vacuum trap 137 as described above is illustrated in cross-sectional view. As shown in the drawing, a trap flow path 1372 is provided in the trap container 1371, and a vacuum hose 131 is provided. ), That is, water containing steam, flows into the trap container 1372 through the inlet 1373. The air flowing into the trap container 1372 is in contact with the refrigerant passage 1372 and condenses water vapor to remove water vapor in the air and is discharged to the outlet 1374. The water vapor formed on the outer surface of the refrigerant passage 1372 is trapped. Gathered in the (1371) and discharged to the condensed water outlet (1375). Reference numeral 1376 denotes a coolant inlet 1376 and reference numeral 1377 denotes a coolant outlet 1377.

On the other hand, when the water vapor contained in the air introduced into the trap container 1372 condensed while contacting the coolant flow path 1372 as described above, the water vapor may be frozen on the surface of the coolant flow path 1372. In order to eliminate this, it may have the following configuration.

FIG. 7 schematically shows a configuration of a system capable of supplying refrigerant to the refrigerant passage 1372 of the trap vessel 1371 and defrosting the surface of the refrigerant passage 1372.

In order to allow the cooled refrigerant to flow in the refrigerant passage 1372, the refrigerator 1361, the condenser 1382, the dryer 1383, and the capillary tube 1348 are sequentially arranged. The refrigerant starting from the freezer (1381) passes through the condenser (1382) and the dryer (1383), is cooled to a low temperature through the capillary tube (1384), and is supplied to the refrigerant passage (1372) in the trap container (1371). As described above, when water vapor contained in the air introduced into the trap container 1371 is condensed while contacting the coolant flow path 1372, and the water vapor is frozen on the surface of the coolant flow path 1372, it is supplied to the capillary tube 1344. The coolant flows directly into the coolant flow path 1372 through the bypass pipe 1385. In this way, since the refrigerant flows into the refrigerant passage 1372 without passing through the capillary tube 1348, the refrigerant is not cooled and the refrigerant is melted on the surface while flowing through the refrigerant passage 1372. The refrigerator 1381, the condenser 1382, the dryer 1383, the capillary 1384, and the trap container 1371 may be provided in the enclosure 150, although not shown in the drawing.

The water supply tank 140 is installed inside the enclosure 150, and the saturated solution is filled in the water supply tank 140. 8 is a schematic cross-sectional view of the water supply tank 140, the water supply tank 140 is provided with a longitudinal partition wall 145, the interior of the first saturation solution portion by the longitudinal partition wall 145 And a second saturated solution portion, each compartment may contain different kinds of saturated solutions.

Therefore, according to the present invention, it is possible to test the specimen 101 using a plurality of saturated solutions. Saturated solution contained in the water supply tank 140, for example, as shown in FIG. 8, of the transfer unit 120 through the water supply hose 141 connected to the first saturated solution portion and the second saturated solution portion, respectively It is supplied to the container 110 via a lid. In Figure 8, the member number 147 is an additional solution mixer 147 for supplying and mixing additional additives to the saturated solution as needed, the member number 148 is a filter 148 for removing foreign matter in the saturated solution, 149 is a pump 149 for smooth transfer of saturated solution. The saturated solution completed in the container 110 may be recovered to the water supply tank 140 again. Saturated solutions that are no longer available are drained and disposed of.

A plurality of transverse bulkheads 145b may be disposed in the water supply tank 140 partitioned by the longitudinal partitions 145a to be divided into a plurality of cells 147. Each cell 147 is provided with a water level sensor (not shown), each of the water supply hose 141 is equipped with a solenoid valve (141V) is opened or closed by an electrical signal generated from the water level sensor.

On the other hand, the PLC 150 is mounted inside the enclosure 150, the switch unit 153 is mounted on the front of the door 151. The switch unit 153 is provided with a main switch and an operation switch corresponding to each transfer unit 120.

Hereinafter, the vacuum saturation device configured as described above will be described in detail.

The concrete specimen 101 is placed in the container 110, and the container 110 is positioned in the groove 157 formed on the upper surface of the enclosure 150. Then, the cylinder 123 of the transfer part 120 is operated to bring the lid 121 into close contact with the opening of the container 110. Press the main switch in the switch unit 153 to operate the vacuum pump 133, select and press the operation switch corresponding to the transfer unit 120 is placed on the concrete specimen 101 to be saturated, the transfer unit 120 The solenoid valve 131V installed in the vacuum hose 131 extended to the opening is opened while the air is sucked through the vacuum hose 131 to maintain the interior of the container 110 in a vacuum state. As such, the inside of the container 110 becomes a vacuum state, and the saturated solution stored in the corresponding cell among the cells 147 of the water supply tank 140 flows into the inside of the container 110 along the water supply hose 141. As the saturated solution flows into the container 110, the level of the saturated solution stored in the cell 147 gradually decreases. When the water level drops to the lowest level set by the water level sensor, an electric signal is generated by the water level sensor. As a result, the solenoid valve 141V of the water supply hose 141 is locked, and the supply of the saturated solution is cut off.

When the container is filled with an amount of saturated solution suitable to saturate the concrete specimen 101, the volume of the container and the volume of the cell are set so that the water level in the cell 147 becomes the minimum level. As the concrete specimen 101 is already standardized, if only the volume of the container 110 and the cell 147 is properly set, the saturated solution supplied until the level sensor detects the minimum water level is appropriate for the container 110. I can fill it.

In this state, the solenoid valve 141V operates to cut off the supply of the saturated solution.

On the other hand, the timer mounted on the PLC measures the time from the time when the operation switch is pressed to stop the operation of the vacuum pump 133 when 24 hours have elapsed to release the vacuum in the container 110.

Next, the cylinder 123 is operated to open the lid 121, and to take out the concrete specimen 101 from the container 110.

On the other hand, the saturated solution filled in the container 110 is drained through the drain pipe 155 formed in the enclosure 150 even if discarded on the upper surface of the enclosure 150. And the water supply tank 140 is replenished with a new saturated solution.

100: vacuum saturation device 101: concrete specimen
110: container 117: protrusion
120: transfer part 121: lid
124: axis 130: vacuum
131: vacuum hose 133: vacuum pump
140: water supply tank 141: water supply hose
150: enclosure 151: door

Claims (3)

A container 110 in which the concrete specimen 101 is placed;
The lid 121 of the container 110 is mounted, and a cylinder member 123 is provided to move the shaft 124 in the up and down direction by air pressure or hydraulic pressure so that the lid is opened by the operation of the cylinder member 123. A transfer part 120 for elevating or lowering the opening of the container 110;
A vacuum unit 130 connected to the lid 121;
A water supply tank 140 connected to the lid 121 to supply water to the container 110; And
The transfer unit 120 is mounted on the outside, the door 151 is formed to accommodate the vacuum unit 130 and the water supply tank 140, the vacuum unit 130 and the water supply tank ( The control unit for controlling the operation of the 140 is built-in, the door 151 is a concrete specimen, characterized in that it comprises a housing 150 having a structure in which a switch unit 153 for inputting a signal to the control unit is mounted Vacuum saturation device.
The method of claim 1,
A plurality of recesses 119 are formed on the inner wall surface of the container 110 according to the height, and each recess 119 has a structure in which a shelf is disposed, and thus a plurality of recesses 119 are formed in one container 110. Vacuum lathe for concrete specimens, characterized in that the two shelves are installed and the specimens 101 can be placed on each shelf to test the plurality of specimens 101 at the same time.
The method according to claim 1 or 2,
The water supply tank 140 is provided with a longitudinal partition 145a, the interior is partitioned by the longitudinal partition 145a, and each partitioned interior contains different kinds of saturated solutions, different types Vacuum saturation device for the concrete specimens, characterized in that the specimen 101 can be tested using a saturated solution of the.

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