CN209946148U - Free expansion volume testing device in expansion rock hydration process - Google Patents
Free expansion volume testing device in expansion rock hydration process Download PDFInfo
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- CN209946148U CN209946148U CN201920789826.9U CN201920789826U CN209946148U CN 209946148 U CN209946148 U CN 209946148U CN 201920789826 U CN201920789826 U CN 201920789826U CN 209946148 U CN209946148 U CN 209946148U
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Abstract
The utility model discloses a free inflation volume testing arrangement and test method among inflation rock hydration process, testing arrangement includes the sealed cowling, the upper plate, the hypoplastron, steam generator and controlling means, the hypoplastron is located the sealed cowling lower extreme, the upper plate is placed in the upper surface of sealed cowling, the inflation rock sample has been placed in the sealed cowling, enclose into an annular cavity between inflation rock sample and the sealed cowling, humidity transducer's probe is located the annular cavity, the upper surface of upper plate is provided with the digital display amesdial, humidity transducer links to each other with controlling means, controlling means control connection steam generator's switch, steam that steam generator produced gets into in the sealed cowling, make inflation rock sample inflation, can measure the inflation volume of calculating inflation rock sample promptly with the digital display amesdial. The device has the advantages of simple structure, convenient operation, high accuracy and low cost, and can effectively test the expansion characteristic in the hydration process of the expansive rock.
Description
Technical Field
The utility model relates to an inflation volume test technical field in the inflation rock hydration process, concretely relates to free inflation volume test device in inflation rock hydration process.
Background
The swelling rock is a rock whose volume increases when it comes into contact with water, and is called swelling rock because it contains a large amount of hydrophilic minerals and undergoes a large volume change when humidity changes. In recent years, in the development of resource and energy and in traffic, water conservancy, electric power and town construction projects, engineering problems caused by expansive rocks are encountered, for example, in railway tunnels and cavern projects, due to the water-swelling characteristic of the expansive rocks, phenomena such as swelling, side wall extrusion, concrete lining damage and the like often occur on tunnel bottom plates, and serious loss is brought to the tunnel engineering construction. Therefore, the research on the volume expansion characteristics of the expanded rock can be used for understanding the damage of the expanded rock to the tunnel engineering, and the method has very important theoretical value and engineering significance.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an inflation rock hydration in-process free expansion volume testing arrangement can calculate the inflation volume of inflation rock hydration in-process effectively.
In order to achieve the above object, the utility model adopts the technical scheme that an expanded rock hydration in-process free expansion volume testing device: the device comprises a sealing device, a humidity sensor, a steam generator and a control device, wherein the sealing device comprises a sealing cover, an upper plate and a lower plate, the sealing cover is placed on the lower plate, a lower sealing ring (a solid disc), an expanded rock sample and an upper sealing ring (a solid disc) are sequentially placed in the sealing cover from bottom to top, and the upper plate is placed above the sealing cover; an annular cavity is defined between the expansive rock sample and the sealing cover, a probe of the humidity sensor is positioned in the annular cavity, the humidity sensor is connected with the control device, the control device controls and is connected with a switch of the steam generator, and the steam generator is communicated with the annular cavity through a steam pipeline; and a digital display dial indicator is arranged on the upper surface of the upper plate.
Preferably, the control device comprises a schmitt trigger, a not gate and a fixed value resistor, an input end of the schmitt trigger is connected with the humidity sensor, an output end of the schmitt trigger is connected with a switch of the steam generator through the not gate, the schmitt trigger, the not gate and the switch of the steam generator are all connected with a direct current power supply through the fixed value resistor, and the switch of the steam generator adopts an electromagnetic relay.
The method for testing by adopting the free expansion volume testing device in the expansion rock hydration process sequentially comprises the following steps:
(1) heating and dehydrating the expansive rock, processing the expansive rock into a cylindrical expansive rock sample by using a clamp, and putting the expansive rock sample into a sealing cover;
(2) recording initial readings of a digital display dial indicator and a humidity sensor;
(3) the switch of the steam generator is triggered to be switched off by a low level and switched on by a high level, the steam generator is controlled to be switched on by a control device, steam enters the sealing cover through the steam pipeline, the expansive rock sample swells when encountering water, the upper plate is upwards extruded, the reading number of the digital display dial indicator is changed, the reading number of the digital display dial indicator is recorded, and the expansion volume of the expansive rock sample is calculated;
(4) the humidity in the sealing cover is continuously increased, when the humidity sensor detects that the humidity in the sealing cover exceeds a set value a, the Schmidt trigger outputs a high level which is changed into a low level after passing through the NOT gate, the switch of the steam generator is switched off, and the steam generator stops running; when the humidity sensor detects that the humidity of the expansive rock sample is between b and a (b < a), the Schmidt trigger continuously outputs high level to maintain the state of the steam generator unchanged, and at the moment, the steam content in the sealing cover is continuously reduced; when the humidity sensor detects that the humidity of the expansive rock sample is lower than a set value b, the Schmidt trigger outputs a low level which is changed into a high level after passing through a NOT gate, a switch of the steam generator is opened, and the steam generator starts to operate again, so that the humidity in the sealing cover is kept in a range from b to a;
(5) and circulating the steps to obtain the relation between the volume change of the expansive rock sample and the time and humidity.
The utility model discloses the beneficial effect who produces is: the utility model discloses simple structure, convenient operation, the accuracy is high, and is with low costs, through letting in steam in to the sealed cowling, tests the relation between volume change and time and the humidity of inflation rock hydration in-process to for providing the reference to the research of the harm characteristic of inflation rock, steam generator's switch is controlled by controlling means, makes the humidity in the sealed cowling keep within the scope of b to a, so both the power saving can reach the humidity requirement again. The utility model discloses can carry out more accurate measurement to the inflation nature of inflation rock hydration in-process, often appear in mine tunnel, railway tunnel, the grotto engineering that bottom plate uplift, side wall extrude, the prevention of the phenomenon of concrete lining destruction has guiding meaning with solving.
Drawings
Fig. 1 is a schematic structural diagram of the testing device of the present invention;
fig. 2 is a schematic structural view of the sealing device of the present invention;
fig. 3 is a schematic circuit diagram of the control device according to the present invention;
fig. 4 is an axial view of a C-clamp for machining a sample of swelling rock.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.
Example 1
As shown in fig. 1 to 4, the utility model discloses a free expansion volume testing device in the hydration process of expanded rock, including sealing device, humidity transducer 5, steam generator 3 and controlling means, sealing device includes sealed cowling 7, upper plate 6 and lower plate 8, and sealed cowling 7 is placed on lower plate 8, and lower sealing washer 9, expanded rock sample 10 and upper sealing washer 11 (the sum of the height of sealed cowling 9, expanded rock sample 10 and upper sealing washer 11 equals the height of sealed cowling 7) have been placed from bottom to top in proper order in sealed cowling 7, and upper plate 6 is placed above sealed cowling 7; an annular cavity 16 is defined between the expanded rock sample 10 and the sealing cover 7, a probe of the humidity sensor 5 is positioned in the annular cavity 16, the humidity sensor 5 is connected with a control device, the control device is in control connection with a switch 15 of the steam generator, and the steam generator 3 is communicated with the annular cavity 16 through a steam pipeline 2; and a digital display dial indicator 1 is arranged on the upper surface of the upper plate.
The control device 4 comprises a Schmidt trigger 12, a NOT gate 13 and a fixed value resistor 14, wherein the input end of the Schmidt trigger 12 is connected with the humidity sensor 5, the output end of the Schmidt trigger 12 is connected with a switch 15 of the steam generator through the NOT gate 13, the Schmidt generator 12, the NOT gate 13 and the switch 15 of the steam generator are all connected with a direct current power supply, the switch 15 of the steam generator adopts an electromagnetic relay, the NOT gate 13 is connected with a coil of the electromagnetic relay, the switch of the electromagnetic relay controls the opening and closing of the steam generator, and the switch 15 of the steam generator is triggered to be opened by a low level and is triggered to be closed by a high level.
The method for testing by adopting the free expansion volume testing device in the expansion rock hydration process sequentially comprises the following steps:
(1) after the expansive rock is heated and dehydrated, a C-shaped clamp is used for processing the expansive rock into a cylindrical expansive rock sample 10, the expansive rock sample 10 is placed in a sealing cover (the expansive rock sample is placed between a lower sealing ring 9 and an upper sealing ring 11), and then an upper plate is covered on the sealing cover;
(2) recording initial readings of a digital display dial indicator and a humidity sensor;
(3) the switch of the steam generator is triggered to be switched off by a low level and switched on by a high level, the steam generator is controlled to be switched on by a control device, steam enters the sealing cover through the steam pipeline, the expansive rock sample swells when encountering water, the upper plate is upwards extruded, the reading number of the digital display dial indicator is changed, the reading number of the digital display dial indicator is recorded, and the expansion volume of the expansive rock sample is calculated;
(4) the humidity in the sealing cover is continuously increased, when the humidity sensor detects that the humidity in the sealing cover exceeds a set value a, the Schmidt trigger outputs a high level which is changed into a low level after passing through the NOT gate, the switch of the steam generator is switched off, and the steam generator stops running; when the humidity sensor detects that the humidity of the expansive rock sample is between b and a (b < a), the Schmidt trigger continuously outputs high level to maintain the state of the steam generator unchanged, and at the moment, the steam content in the sealing cover is continuously reduced; when the humidity sensor detects that the humidity of the expansive rock sample is lower than a set value b, the Schmidt trigger outputs a low level which is changed into a high level after passing through a NOT gate, a switch of the steam generator is opened, and the steam generator starts to operate again, so that the humidity in the sealing cover is kept in a range from b to a;
(5) and circulating the steps to obtain the relation between the volume change of the expansive rock sample and the time and humidity.
The utility model discloses simple structure, convenient operation, the accuracy is high, and is with low costs, can carry out more accurate measurement to the inflation nature of inflation rock hydration in-process, often appears bottom plate uplift, side wall extrusion, the prevention of the phenomenon of concrete lining destruction and solve in mine tunnel, railway tunnel, the cavern engineering and have guiding meaning.
Claims (3)
1. The utility model provides a free expansion volume testing arrangement among expanded rock hydration process which characterized in that: the device comprises a sealing device, a humidity sensor, a steam generator and a control device, wherein the sealing device comprises a sealing cover, an upper plate and a lower plate, the sealing cover is placed on the lower plate, a lower sealing ring, an expanded rock sample and an upper sealing ring are sequentially placed in the sealing cover from bottom to top, and the upper plate is placed above the sealing cover; an annular cavity is defined between the expansive rock sample and the sealing cover, a probe of the humidity sensor is positioned in the annular cavity, the humidity sensor is connected with the control device, the control device controls and is connected with a switch of the steam generator, and the steam generator is communicated with the annular cavity through a steam pipeline; and a digital display dial indicator is arranged on the upper surface of the upper plate.
2. The device for testing the free expansion volume in the hydration process of the expanded rock as claimed in claim 1, wherein: the control device comprises a Schmidt trigger, a NOT gate and a fixed value resistor, wherein the input end of the Schmidt trigger is connected with the humidity sensor, the output end of the Schmidt trigger is connected with a switch of the steam generator through the NOT gate, the Schmidt trigger, the NOT gate and the switch of the steam generator are all connected with a direct current power supply through the fixed value resistor, and the switch of the steam generator adopts an electromagnetic relay.
3. The device for testing the free expansion volume in the hydration process of the expanded rock as claimed in claim 2, wherein: the switch of the steam generator is triggered to be opened by low level and to be closed by high level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920789826.9U CN209946148U (en) | 2019-05-29 | 2019-05-29 | Free expansion volume testing device in expansion rock hydration process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920789826.9U CN209946148U (en) | 2019-05-29 | 2019-05-29 | Free expansion volume testing device in expansion rock hydration process |
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| CN209946148U true CN209946148U (en) | 2020-01-14 |
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| CN201920789826.9U Expired - Fee Related CN209946148U (en) | 2019-05-29 | 2019-05-29 | Free expansion volume testing device in expansion rock hydration process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110018296A (en) * | 2019-05-29 | 2019-07-16 | 河南理工大学 | Free wxpansion volume test device and test method in a kind of expansive rock hydration process |
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- 2019-05-29 CN CN201920789826.9U patent/CN209946148U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110018296A (en) * | 2019-05-29 | 2019-07-16 | 河南理工大学 | Free wxpansion volume test device and test method in a kind of expansive rock hydration process |
| CN110018296B (en) * | 2019-05-29 | 2024-04-26 | 河南理工大学 | Free expansion volume testing device and testing method in expansion rock hydration process |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200114 Termination date: 20200529 |