CN210823765U - Coal sample tank - Google Patents
Coal sample tank Download PDFInfo
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- CN210823765U CN210823765U CN201921896265.9U CN201921896265U CN210823765U CN 210823765 U CN210823765 U CN 210823765U CN 201921896265 U CN201921896265 U CN 201921896265U CN 210823765 U CN210823765 U CN 210823765U
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- air duct
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Abstract
The utility model discloses a coal sample tank, which comprises a tank cover, a tank body and an air duct, wherein the tank cover, the tank body and the air duct are arranged from top to bottom, the lower end of the tank cover is hermetically connected with the upper end of the tank body, the upper end of the tank cover is communicated with the air inlet of the air duct, the air outlet of the air duct is connected with a connecting nut, a horn-shaped air duct communicated with the air duct is arranged in the connecting nut, the large opening of the horn-shaped air duct is connected; the utility model discloses can prevent that it from appearing the loss in the survey process when realizing the coal sample reaction, and then guarantee the accuracy and the reliability of testing result, simultaneously, can also guarantee that the gas after the reaction can be discharged to the measuring equipment by the air duct is smooth, further improves the reliability of testing result.
Description
Technical Field
The utility model relates to a coal sample desorption technical field especially relates to a coal sample jar.
Background
In the original coal body, once the dynamic equilibrium state of the free gas and the adsorbed gas is destroyed, the occurrence state of partial gas can be converted in a single direction within a certain time until a new dynamic equilibrium state is reached. When the coal sample is in the original coal body, the gas pressure of the coal sample is equal to the gas pressure of the original coal body, and the free gas and the adsorbed gas in the coal sample are in a dynamic balance state; after the coal sample is stripped by the excavation operation, the coal is exposed to the atmosphere, the pressure of the surrounding environment becomes the atmospheric pressure of the measuring place, the pressure is reduced, the dynamic balance state of free gas and adsorbed gas in the coal sample is destroyed, the original gas adsorbed in the coal starts to be desorbed until the gas pressure in the coal sample is equal to the atmospheric pressure of the measuring place, and the new dynamic balance is achieved.
At present, the existing coal sample tank for testing the desorption amount of gas has the following problems in the process of underground field testing:
1) poor sealing performance: the gas leakage is easy to occur at the threaded occlusion part of the tank opening of the coal sample tank, so that the test result is inaccurate;
2) the puncture needle head is easily blocked by the sealing rubber pad in the using process, so that desorbed gas cannot be normally collected, and the accurate judgment of workers on the occurrence condition of the coal bed gas on site is influenced;
3) the method for testing the coal sample desorption amount underground by adopting a direct method needs to be carried out by using a drainage method, namely, a tester acquires a plurality of groups of coal samples underground, fills the testing device with water, and utilizes gas pressure to drain water to measure the volume of gas.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a coal sample jar can prevent that its loss from appearing in the survey process when realizing the coal sample reaction, and then guarantees the accuracy and the reliability of testing result, simultaneously, can also guarantee that the gas after the reaction can be discharged to the measuring equipment by the air duct is smooth, further improves the reliability of testing result.
The utility model adopts the technical proposal that:
the utility model provides a coal sample jar, includes cover, can body and the air duct that sets up from top to bottom, and cover lower extreme sealing connection can body upper end, cover upper end intercommunication air duct air inlet, the gas outlet of air duct are connected with coupling nut, are equipped with the loudspeaker form air duct of intercommunication air duct in the coupling nut, and the air duct is connected to the big mouth of loudspeaker form air duct, and external equipment is connected to the small-bore of loudspeaker form air duct.
Furthermore, the tank cover adopts a conical structure, a small opening of the tank cover is communicated with the air guide pipe, and a large opening of the tank cover is connected with the tank body.
Further, the tank cover and the air duct are integrally formed.
Furthermore, an air guide valve is arranged on the air guide tube.
Furthermore, the outer circumference of the upper end of the tank body is provided with an external thread, the external thread is provided with a sealing rubber gasket, and the inner circumference of the lower end of the tank cover is provided with an internal thread matched with the external thread of the air guide pipe.
Furthermore, the outer circumference of the air outlet of the air guide tube is provided with an external thread, the inner circumference of the connecting nut is provided with an internal thread matched with the external thread of the air guide tube, and a sealing washer is arranged between the air guide tube and the connecting nut.
Furthermore, a fixing clamp for fixing external equipment is arranged outside the tank body, and a hinged nut is arranged at the bottom of the tank body.
The utility model discloses following beneficial effect has:
(1) the horn-shaped vent groove is arranged at the tail end of the gas guide pipe of the coal sample tank, so that gas can be effectively prevented from dissipating when being discharged, the accuracy of a measuring result is improved, the sealing performance of the whole coal sample tank is ensured through the sealing connection between the tank cover and the tank body, the gas generated by the reaction of the coal sample is prevented from leaking, and the measuring accuracy of the coal sample tank is ensured on the basis of ensuring the accuracy of the measuring result;
(2) the tank cover is arranged to be of a conical structure, and the tank cover and the air guide pipe are integrally formed, so that gas is prevented from accumulating and generating eddy at the lower end of the air guide pipe, the smoothness of gas flowing in the measuring process is ensured, and the accuracy of the measuring result is indirectly ensured;
(3) through set up sealed cushion between cover and can body, set up seal ring between coupling nut and air duct, further strengthen sealing performance on threaded connection's basis, and then guarantee the gas tightness of equipment at whole desorption in-process, and then guarantee the accuracy of testing result.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the trumpet-shaped vent groove in fig. 1.
Description of reference numerals:
1. a can body; 2. a can lid; 3. sealing the rubber gasket; 4. fixing the card; 5. a hinged nut; 6. an air duct; 7. a gas guide valve; 8. a connecting nut; 9. a horn-shaped vent channel; 10. a sealing gasket; 11. and (5) a pressure guiding pipe.
Detailed Description
As shown in figure 1, the utility model discloses a cover 2, can body 1 and air duct 6 that set up from top to bottom, cover 2 lower extreme sealing connection can body 1 upper end, 2 upper ends of cover intercommunication air duct 6 air inlets, the gas outlet of air duct 6 is connected with coupling nut 8, is equipped with the loudspeaker form air channel 9 that communicates air duct 6 in the coupling nut 8, and the air duct 6 is connected to the big mouth of loudspeaker form air channel 9, and the external measuring equipment is connected through drawing pipe 11 to the small-bore of loudspeaker form air channel 9.
In order to better understand the present invention, the technical solution of the present invention is further explained below with reference to the accompanying drawings.
As shown in fig. 1, the utility model comprises a tank cover 2, a tank body 1 and an air duct 6 which are arranged up and down, wherein the lower end of the tank cover 2 is hermetically connected with the upper end of the tank body 1, the upper end of the tank cover 2 is communicated with the air inlet of the air duct 6, the air outlet of the air duct 6 is connected with a connecting nut 8, a horn-shaped air duct 9 communicated with the air duct 6 is arranged in the connecting nut 8, as shown in fig. 2, the large opening of the horn-shaped air duct 9 is connected with the air duct 6, and the small opening of the horn-shaped; the air duct 6 is provided with an air guide valve 7.
The cover 2 adopts a conical structure, a small opening of the cover 2 is communicated with the air duct 6 and is integrally formed with the air duct 6, and a large opening of the cover 2 is connected with the tank body 1.
The outer circumference of the upper end of the tank body 1 is provided with an external thread, the external thread is provided with a sealing rubber gasket 3, and the inner circumference of the lower end of the tank cover 2 is provided with an internal thread matched with the external thread of the gas guide pipe 6. External sealed cushion 3 adopts the rubber material, and the leakproofness is strong, and the material easily acquires moreover, durable, low cost.
An external thread is arranged on the outer circumference of the air outlet of the air duct 6, an internal thread matched with the external thread of the air duct 6 is arranged on the inner circumference of the connecting nut 8, and a sealing washer 10 is arranged between the air duct 6 and the connecting nut 8.
Meanwhile, a fixing clamp 4 for fixing external equipment is arranged outside the tank body 1, a hinged nut 5 is arranged at the bottom of the tank body 1, and the measuring device can be flexibly suspended in the process of underground gas desorption, so that reading is facilitated.
The utility model discloses a working process does:
firstly, collecting a coal sample, quickly filling the coal sample into a coal sample tank, screwing the tank cover 2 tightly to ensure the sealing property of the coal sample tank, and at the moment, a gas guide pipe 6 connected with the tank cover 2 is controlled by a closed gas guide valve 7 and is not communicated with the outside; the coal sample tank is connected with an external device for measuring the gas flow by using a connecting nut 8. After the preparation work is finished, a safe place is selected to hang the coal sample tank, after the air tightness of the coal sample tank and each interface is verified to be normal, the air guide valve 7 is opened to enable gas to enter external test equipment from the coal sample tank to start testing. After the test is finished, the air guide valve 7 is screwed down, the connecting nut 8 is taken down, the air tightness of the coal sample tank is checked again, and then the coal sample and the flow measuring equipment are sent to a laboratory for processing and analysis.
The utility model discloses can prevent that it from appearing the loss in the survey process when realizing the coal sample reaction, and then guarantee the accuracy and the reliability of testing result, simultaneously, can also guarantee that the gas after the reaction can be discharged to the measuring equipment by 6 fluences of air duct, further improve the reliability of testing result.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions described in the foregoing embodiments may be modified or equivalent replaced by some or all of the technical features, and the modifications or the replacements may not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. A coal sample jar which characterized in that: including cover, can body and the air duct that sets up from top to bottom, cover lower extreme sealing connection can body upper end, cover upper end intercommunication air duct air inlet, the gas outlet of air duct is connected with coupling nut, is equipped with the loudspeaker form air duct of intercommunication air duct in the coupling nut, and the air duct is connected to the big mouth of loudspeaker form air duct, and external equipment is connected to the small-bore of loudspeaker form air duct.
2. The coal sample tank of claim 1, wherein: the cover adopts the toper structure, and cover osculum intercommunication air duct, cover main aspects connect the can body.
3. The coal sample tank of claim 2, wherein: the tank cover and the air duct are integrally formed.
4. The coal sample tank of claim 2, wherein: and the air duct is provided with an air guide valve.
5. The coal sample tank of claim 2, wherein: the outer circumference of the upper end of the tank body is provided with external threads, the external threads are provided with a sealing rubber gasket, and the inner circumference of the lower end of the tank cover is provided with internal threads matched with the external threads of the air guide pipe.
6. The coal sample tank of claim 2, wherein: the outer circumference of the air outlet of the air guide pipe is provided with an external thread, the inner circumference of the connecting nut is provided with an internal thread matched with the external thread of the air guide pipe, and a sealing gasket is arranged between the air guide pipe and the connecting nut.
7. The coal sample tank of claim 2, wherein: the outer fixing clip that is used for fixed external equipment that is equipped with of can body, the can body bottom is equipped with articulated nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921896265.9U CN210823765U (en) | 2019-11-06 | 2019-11-06 | Coal sample tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921896265.9U CN210823765U (en) | 2019-11-06 | 2019-11-06 | Coal sample tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210823765U true CN210823765U (en) | 2020-06-23 |
Family
ID=71281191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921896265.9U Active CN210823765U (en) | 2019-11-06 | 2019-11-06 | Coal sample tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210823765U (en) |
-
2019
- 2019-11-06 CN CN201921896265.9U patent/CN210823765U/en active Active
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