CN204327070U - A kind of borehole fissure checkout gear - Google Patents
A kind of borehole fissure checkout gear Download PDFInfo
- Publication number
- CN204327070U CN204327070U CN201420797867.XU CN201420797867U CN204327070U CN 204327070 U CN204327070 U CN 204327070U CN 201420797867 U CN201420797867 U CN 201420797867U CN 204327070 U CN204327070 U CN 204327070U
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- CN
- China
- Prior art keywords
- boring
- surge tank
- connector
- tube connector
- stack
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
A kind of borehole fissure checkout gear, the stack comprising surge tank and be communicated with surge tank, the end of stack is communicated with tube connector by connector, tube connector is inserted in boring, and stretch out boring, the elastic sealing ring be set on tube connector is provided with in the end of connector, the length of elastic sealing ring is greater than the length that tube connector stretches out from boring, internal diameter is less than the diameter of tube connector, head is rotationally connected by the handle of connector both sides, extruding elastic sealing ring, make it that deformation occur and close boring, surge tank is provided with air inlet port, reversal valve, pressure meter, safety valve and flow meter, reversal valve controls the keying of air inlet port, reversal valve is closed after surge tank charged pressure gas, the crack situation in boring is detected by the variation of flow meter pointer before and after reversal valve cuts out.The utility model is by detecting with the change of air-flow in the surge tank that is communicated with of holing the size whether boring exists crack and crack, and easy and simple to handle, efficiency is high.
Description
Technical field
The utility model belongs to control of coalmine gas equipment, when carrying out gas extraction especially by boring, for the checkout gear to borehole fissure.
Background technology
In recent years, along with the raising of shaft production Mechanization Level and intensive degree, a lot of mining area all enters deep mining, and gas emission sharply increases.Gas in coal seam extracted out in time and is used, both can prevent and reduce the generation of colliery major gas accident, ensureing the safety of mine, the environment in mining area can be protected again, obtain good economic benefit and social benefit.
When carrying out gas control, conventional method is, hole in coal seam, gas drainage pipe is stretched in boring, cement grout is injected again in boring, with the space between shutoff boring and gas drainage pipe, and after will ensureing shutoff, this space is air tight, and is discharged by the gas in boring by the gas drainage pipe in boring.In above process, especially be easy in boring procedure occur hole wall crack, or the structural fracture in coal seam, if the crack on hole wall accurately can not be detected before sealing of hole, then cement grout will infiltrate in crack, cause sealing of hole unsaturated, even can cause the further expansion in crack, have a strong impact on the discharge of gas and the safety of mine, therefore, need to detect borehole fissure before sealing of hole, but in currently available technology, be not specifically designed to the device of borehole fissure detection.
Utility model content
The purpose of this utility model is to provide a kind of borehole fissure checkout gear, by detecting with the change of air pressure in the surge tank that is communicated with of holing and air-flow the size whether boring exists crack and crack.
In order to solve the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of borehole fissure checkout gear, the stack comprising surge tank and be communicated with surge tank, the end of stack is communicated with tube connector by connector, tube connector is inserted in boring, and stretch out boring, the elastic sealing ring be set on tube connector is provided with in the end of connector, the length of elastic sealing ring is greater than the length that tube connector stretches out from boring, the internal diameter of elastic sealing ring is less than the diameter of tube connector, in the both sides of connector, handle is set respectively, head is rotationally connected by handle, extruding elastic sealing ring, making it that deformation occur withstands on boring coal seam around, with closed boring, surge tank is provided with air inlet port, reversal valve, pressure meter, safety valve and flow meter, the keying of air inlet port is controlled by reversal valve, pressure release is carried out by safety valve, reversal valve is closed after surge tank charged pressure gas, the crack situation in boring is detected by the variation of flow meter pointer before and after reversal valve cuts out.
Further, described handle is installed the theft-resistant link chain with earth surface, the electrostatic produced in rotation process is imported underground.
Further, a valve is set between described stack and connector, detects to close the tightness of stack to surge tank.
Compared with prior art, the utility model has following beneficial effect:
First, the utility model is by arranging surge tank, and surge tank is connected with boring stack and tube connector, by passing into the gas of certain pressure in surge tank, and according to air pressure and air-flow change judge whether boring exists crack, when there is not crack in borehole wall, gauge hand on surge tank there will not be variation, and flow meter does not also have reading, and when borehole wall exists crack, gauge hand reading will reduce, flow meter also there will be reading, and if when crack is more or crack is larger, flow meter has larger reading, thus judge the crack situation in boring,
The second, the surge tank in the utility model can for stack provides buffering in the process of inflating in stack, to avoid being filled with suddenly the explosion that a large amount of gases at high pressure cause stack in stack;
3rd, the one end near connector on stack in the utility model arranges valve, can before detecting borehole sealing, and close this valve, whether detection surge tank and stack leak gas, to improve the accuracy that the utility model detects borehole fissure;
4th, the handle in the utility model, connector arranged is convenient to rotate handle, and handle arranges theft-resistant link chain, and the electrostatic produced in rotation process is introduced underground, to avoid the potential safety hazard caused by electrostatic;
5th, the utility model arranges the elastic sealing ring that can be set on tube connector in one end of connector, and the length due to elastic sealing ring is greater than the length that tube connector stretches out from boring, therefore, when to be rotationally connected, extruding is produced to elastic sealing ring, make it that elastic deformation occur, then by bore closed, and prevent from leaking air between boring and connector, affect the degree of accuracy to borehole sealing effect detection.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the sectional drawing of the utility model Elastic joint ring.
Mark in figure: 1, surge tank, 2, stack, 3, connector, 301, elastic sealing ring, 4, tube connector, 5, handle, 6, theft-resistant link chain, 7, air inlet port, 8, reversal valve, 9, pressure meter, 10, safety valve, 11, flow meter.
Detailed description of the invention
Below in conjunction with accompanying drawing, by detailed description of the invention, the utility model is further described.
As shown in the figure, a kind of borehole fissure checkout gear, the stack 2 comprising surge tank 1 and be communicated with surge tank 1, stack 2 is high-pressure hose, its good pressure-resistant performance, can be prevented pressure in stack 2 excessive and burst, the tank body of surge tank 1 is provided with air inlet port 7, controlling the flow meter 11 of air flow rate in the reversal valve 8 of air inlet port 7, the pressure meter 9 of instruction surge tank 1 internal gas pressure, the safety valve 10 lost heart for surge tank 1 and instruction surge tank 1.
The end of described stack 2 is threaded connection the one end being tightened on a connector 3, the other end of connector 3 is fixedly installed the elastic sealing ring 301 be made up of rubber, and elastic force can be overcome under external force be set in the tube connector 4 that stretches out in coal bed drilling, and the internal diameter of elastic sealing ring 301 is less than the external diameter of tube connector 4, the length of elastic sealing ring 301 is less than the length that tube connector 4 stretches out boring simultaneously, and the handle 5 arranged in connector 3 both sides for being rotationally connected 3, wherein a handles 5 be provided with one with the theft-resistant link chain 6 of earth surface, electrostatic for being produced by connector 3 rotation process imports ground in time, to avoid danger.
In order to ensure the accuracy detected borehole fissure, to detect the tightness of this device itself before testing, therefore, stack 2 arranges valve near connector 3 one end, carries out surge tank 1 and the bubble-tight detection of stack 2 with closed stack 2.
During use, first check the tightness of surge tank 1, concrete operations are: first by the valve closing on the stack 2 of this device, then air pump is utilized in surge tank 1, to be filled with forced air to 1/3 of pressure meter 9 reading by the air inlet port 7 on tank body, then reversal valve 8 and air pump is closed, after waiting for a period of time, whether the reading observing pressure meter 9 reduces, if pressure meter 9 reading remains unchanged, illustrate that the tightness of surge tank 1 and stack 2 is good, otherwise then illustrate that surge tank 1 or stack 2 exist the possibility of gas leakage, further will carry out investigation maintenance.
When determining surge tank 1 and stack 2 tightness is good, just can carry out the detection of borehole fissure, concrete operations are: the tube connector 4 first selecting diameter with it consistent according to bore diameter, described stack 2 is connected on tube connector 4 by connector 3, then tube connector 4 is inserted in boring, the outer wall of tube connector 4 is made to be adjacent to borehole wall, and tube connector exposes boring, then 3 are rotationally connected by handle 5, overcome the elastic force of 301 of elastic sealing ring, make it that elastic deformation occur, hold out against on the coal seam wall around boring, hell is closed, then the valve on stack 2 and the reversal valve on tank body 8 is slowly opened, start air pump, air is filled with in surge tank 1, until the pointer of pressure meter 9 arrives the centre position of pressure gauge reading scope, close reversal valve 8 and air pump again, and the reading situation of flow meter 11 before and after reversal valve cuts out is observed.
According to the kind in crack, there is following several situation in flow meter 11: when there is the situation that flow meter 11 reading increases, and just illustrates to there is crack on this borehole wall, otherwise, be exactly there is not crack; If slowly drop to zero again after the reading of flow meter 11 slowly increases, then illustrate that the crack in holing is less or crack is less; If flow meter 11 reading increases and declines very fast, illustrate that the interior crack of boring is more or crack is larger.
Therefore, by observing the situation of change of flow meter 11 reading, the basic condition in interior crack of can judging to hole, thus sealing of hole can be carried out to boring targetedly, to reduce or to eliminate the impact of crack on sealing of hole.
When air pump squeezes into forced air in surge tank 1, if surge tank 1 internal gas pressure exceedes its setting value, safety valve 10 can be opened under the influence of air pressure automatically, outwards loses heart, to ensure the safety of surge tank 1.
Claims (3)
1. a borehole fissure checkout gear, it is characterized in that: the stack (2) comprising surge tank (1) and be communicated with surge tank (1), the end of stack (2) is communicated with tube connector (4) by connector (3), tube connector (4) is inserted in boring, and stretch out boring, the elastic sealing ring (301) be set on tube connector (4) is provided with in the end of connector (3), the length of elastic sealing ring (301) is greater than the length that tube connector (4) stretches out from boring, the internal diameter of elastic sealing ring (301) is less than the diameter of tube connector (4), in the both sides of connector (3), handle (5) is set respectively, head (3) is rotationally connected by handle (5), extruding elastic sealing ring (301), make it that deformation occur to withstand on boring coal seam around with closed boring, surge tank (1) is provided with air inlet port (7), reversal valve (8), pressure meter (9), safety valve (10) and flow meter (11), the keying of air inlet port (7) is controlled by reversal valve (8), pressure release is carried out by safety valve (10), reversal valve (8) is closed after surge tank (1) charged pressure gas, the crack situation in boring is detected by the variation of flow meter (11) pointer before and after reversal valve (8) cuts out.
2. a kind of borehole fissure checkout gear according to claim 1, is characterized in that: at the theft-resistant link chain (6) of the upper installation of described handle (5) with earth surface, the electrostatic produced in rotation process is imported underground.
3. a kind of borehole fissure checkout gear according to claim 1, is characterized in that: arrange a valve between described stack (2) and connector (3), detects to close the tightness of stack (2) to surge tank (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420797867.XU CN204327070U (en) | 2014-12-17 | 2014-12-17 | A kind of borehole fissure checkout gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420797867.XU CN204327070U (en) | 2014-12-17 | 2014-12-17 | A kind of borehole fissure checkout gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204327070U true CN204327070U (en) | 2015-05-13 |
Family
ID=53163442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420797867.XU Expired - Fee Related CN204327070U (en) | 2014-12-17 | 2014-12-17 | A kind of borehole fissure checkout gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204327070U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113027423A (en) * | 2021-01-21 | 2021-06-25 | 河南理工大学 | Device and method for detecting sealing performance of extraction plugging section of cross-layer drilling |
-
2014
- 2014-12-17 CN CN201420797867.XU patent/CN204327070U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113027423A (en) * | 2021-01-21 | 2021-06-25 | 河南理工大学 | Device and method for detecting sealing performance of extraction plugging section of cross-layer drilling |
| CN113027423B (en) * | 2021-01-21 | 2023-09-22 | 河南理工大学 | Device and method for detecting tightness of drainage plugging section of through-layer drilling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20150513 Termination date: 20161217 |