CN212154685U - Drill rod non-return short section capable of preventing gas from gushing out - Google Patents
Drill rod non-return short section capable of preventing gas from gushing out Download PDFInfo
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- CN212154685U CN212154685U CN202020923934.3U CN202020923934U CN212154685U CN 212154685 U CN212154685 U CN 212154685U CN 202020923934 U CN202020923934 U CN 202020923934U CN 212154685 U CN212154685 U CN 212154685U
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Abstract
The utility model discloses a gas emission-proof drill pipe non-return short section, which comprises a non-return valve core, a short section front end and a short section rear end which are arranged on the non-return valve core, wherein the short section front end, the short section rear end and the non-return valve core are positioned on the same axis and are fixedly connected by screw threads in sequence; the check valve core comprises a valve core front end, a valve core rear end and a sealing rolling ball, wherein the sealing rolling ball is positioned in a cavity formed after the valve core front end and the valve core rear end are fixedly connected and can move back and forth in the cavity; after the equipment, sealed spin is located the cavity, case front end fixed connection is inside the nipple joint front end, case rear end fixed connection is on the nipple joint rear end to use thread tightening, the utility model discloses can reach sealed drilling rod inner passage, prevent that the gas from by the inside purpose of effluvium of drilling rod.
Description
Technical Field
The utility model belongs to the technical field of colliery well worker exploitation, belong to colliery gas and administer technique, gas drainage drilling construction, drilling water conservancy and punch a hole and the water conservancy slot technique, concretely relates to prevent contrary nipple joint of drilling rod that gas gushed.
Background
The gas disaster is one of the most main disasters of high gas mines and coal and gas outburst mines, and is also one of the main bottlenecks restricting the production of the gas disaster. In a high gas, coal and gas outburst mine (or coal bed) without a protective layer mining condition, the construction of a drill hole for pre-pumping coal bed gas is the most effective regional gas control measure. However, abnormal phenomena such as sudden gas ejection and the like easily occur in the drilling construction process, and at the present stage, the mine generally adopts an orifice blowout preventer to pump and discharge gas in time and prevent gas overrun. However, since the strength of the gas spraying hole, the spraying time, the gas emission amount, the duration and the like are all uncontrollable, if the gas emission amount of the drill hole is large and the strength of the spraying hole is strong during the period of detaching the water tail at the rear end of the drill rod, the gas in the drill hole is easily emitted along the inner channel of the drill rod in a large amount, so that the gas in the roadway is rapidly increased and even exceeds the limit, and the safety of field constructors can be threatened in serious cases.
Therefore, the drilling rod non-return short section connected with the drilling rod and preventing gas from flowing out is researched and developed, gas in the hole is blocked from accidentally releasing a channel along the inside of the drilling rod, and the drilling rod non-return short section has great significance for further perfecting a blowout preventer system during drilling construction and avoiding gas overrun.
SUMMERY OF THE UTILITY MODEL
Problem to the existence on the prior art, the utility model provides a drilling rod contrary nipple joint of preventing gas gush can guarantee that drilling is bored or water conservancy punches a hole normal construction period rivers (pressure wind) and is supplied with, and the downthehole gas of effective separation simultaneously stops the gas transfinite along the inside unexpected release passage of drilling rod.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a gas emission prevention drill rod inverted nipple comprises an inverted valve core, and a nipple front end and a nipple rear end which are arranged on the inverted valve core, wherein the nipple front end, the nipple rear end and the inverted valve core are positioned on the same axis and are fixedly connected in sequence by threads;
the check valve core comprises a valve core front end, a valve core rear end and a sealing rolling ball, wherein the sealing rolling ball is positioned in a cavity formed after the valve core front end and the valve core rear end are fixedly connected and can move back and forth in the cavity;
after the assembly, the sealed spin is located the cavity, case front end fixed connection is inside the nipple joint front end, case rear end fixed connection is on the nipple joint rear end to use thread tightening.
Further, the diameter of the sealing ball is larger than that of the front-end channel and the rear-end channel.
Furthermore, the number of the through holes is at least 1.
Furthermore, the vertical sections of the front end channel and the rear end channel are trumpet-shaped.
Further, the diameter of the front end channel is larger than that of the through hole.
Adopt above-mentioned technical scheme, the beneficial effects of the utility model are that:
the utility model discloses device convenient to detach, installation and maintenance, with various drilling rods, the supporting of drilling tool equipment such as drill bit is very convenient with linking up, the device can install in drilling rod and drill bit as required in a flexible way, drilling rod and drilling rod, drilling rod and water tail junction, neither change the work progress at the work progress in the pit, do not influence the construction progress yet, when guaranteeing drilling or normal construction period rivers (compressed air) supply with of punching a hole, the downthehole gas of effective separation is along the inside unexpected release passageway of drilling rod, stop the gas transfinite, constructor's security in the pit has been ensured.
Drawings
Fig. 1 is a schematic structural view (a check valve core closed state) of the present invention;
fig. 2 is a schematic structural view (open state of check valve element) of the present invention;
FIG. 3 is a schematic structural view of the check valve cartridge of the present invention;
fig. 4 is a schematic structural view of the front end of the valve core of the present invention;
fig. 5 is a schematic structural view of the rear end of the valve element of the present invention;
in the figure: the pipe nipple comprises a pipe nipple front end 1, a pipe nipple rear end 2, a check valve core 3, a valve core front end 4, a valve core rear end 5, a sealing rolling ball 6, a front end channel 7, a rear end channel 8 and a through hole 9.
Detailed Description
For making the utility model discloses the technological means, creation characteristic, achievement purpose and efficiency that realize are easily understood and are known, combine specific implementation below, further explain the utility model discloses:
therefore, the following detailed description of the embodiments of the present invention, which is provided in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention, and all other embodiments that can be obtained by one of ordinary skill in the art without any creative effort based on the embodiments of the present invention belong to the scope of the invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, and the two elements may be connected through an intermediate medium.
In conjunction with fig. 1-5:
a gas emission prevention drill rod inverted nipple comprises an inverted valve core 3, and a nipple front end 1 and a nipple rear end 2 which are arranged on the inverted valve core 3, wherein the nipple front end 1, the nipple rear end 2 and the inverted valve core 3 are in the same axis and are fixedly connected in sequence by threads; the check valve core 3 is positioned in a cavity formed by assembling the front end 1 of the short section and the rear end 2 of the short section;
the check valve core 3 comprises a valve core front end 4, a valve core rear end 5 and a sealing rolling ball 6, wherein the sealing rolling ball 6 is positioned in a cavity formed after the valve core front end 3 and the valve core rear end 4 are fixedly connected and can move back and forth in the cavity, the valve core front end 3 is provided with a front end channel 7 and a plurality of through holes 9, and the valve core rear end 5 is provided with a rear end channel 8;
after the assembly, sealed spin 6 is located the cavity that case front end 4 and case rear end 5 formed, 4 fixed connection of case front end are inside nipple joint front end 1, 5 fixed connection of case rear end are on nipple joint rear end 2 to use the thread tightening.
Wherein, the diameter of the sealing rolling ball 6 is 1.2 times of the diameter of the front end channel 7 and the back end channel 8, and the front end channel 7 or the back end channel 8 can be completely sealed.
In this embodiment, there are at least 6 through holes 9.
In this embodiment, the vertical sections of the front end channel 7 and the rear end channel 8 are trumpet-shaped.
In this embodiment, the diameter of the front end passage 7 is 2 times the diameter of the through hole 9.
In this embodiment, valve core front end 4 and valve core rear end 5 are within a definite time, contrary valve core 3 and nipple joint front end 1 are within a definite time, nipple joint front end 1 and nipple joint rear end 2 are within a definite time, contrary nipple joint and broken drill bit and drilling rod all are through threaded connection.
The device is installed and used according to the following steps:
s1: assembling the check valve core 3: the sealed rolling ball 6 is arranged in the front end 4 of the valve core, and the rear end 5 of the valve core is fastened on the front end 4 of the valve core through threads;
s2: assembling a drill rod check short section: fixing a check valve core 3 on the front end 1 of the short section through threads, and connecting the front end 1 of the short section and the rear end 2 of the short section together through threads to form a whole;
s3: construction application: the utility model is arranged at the connection part of the drill rod and the drill bit, the drill rod and the drill rod, and the drill rod and the water tail as required, during the normal construction period of drilling and drilling or hydraulic punching, the static/high pressure water (compressed air) pushes the sealed ball 6 in the device of the utility model to close the front end channel 7, the water flow (compressed air) reaches the position of the drill bit through the through hole 9, the normal supply of the water flow (compressed air) is ensured, and the slag discharge is convenient; take place in the drilling gas unusual phenomena periods such as blowout suddenly, sealed spin 6 airtight rear end passageway 8 makes the utility model discloses check valve core 3 of device is in airtight state, reaches sealed drilling rod inner passage, prevents that the gas from being by the inside purpose of gushing out of drilling rod.
In this application, the direct seal structure of each part like the sealed of nipple joint front end and case, directly use rubber circle or sealed the pad can, do not explain here.
The present embodiment is not intended to limit the shape, material, structure, etc. of the present invention in any form, and all of the technical matters of the present invention belong to the protection scope of the present invention to any simple modification, equivalent change and modification made by the above embodiments.
Claims (5)
1. The drill rod non-return short section capable of preventing gas from gushing out is characterized by comprising a non-return valve core, a short section front end and a short section rear end, wherein the short section front end and the short section rear end are arranged on the non-return valve core, and the short section front end and the short section rear end are positioned on the same axis and are fixedly connected with the non-return valve core in sequence by threads;
the check valve core comprises a valve core front end, a valve core rear end and a sealing rolling ball, wherein the sealing rolling ball is positioned in a cavity formed after the valve core front end and the valve core rear end are fixedly connected and can move back and forth in the cavity;
after the assembly, the sealed spin is located the cavity, case front end fixed connection is inside the nipple joint front end, case rear end fixed connection is on the nipple joint rear end to use thread tightening.
2. The gas flood prevention drill pipe non-return short section according to claim 1, wherein the diameter of the sealing rolling ball is larger than the diameter of the front end channel and the rear end channel.
3. The gas-emission-preventing drill pipe non-return short section according to claim 1, wherein the number of the through holes is at least 1.
4. The gas-emission-preventing drill pipe non-return short section according to claim 1, wherein the vertical sections of the front end channel and the rear end channel are trumpet-shaped.
5. The gas emission preventing drill pipe non-return short section according to claim 1, wherein the diameter of the front end channel is larger than that of the through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020923934.3U CN212154685U (en) | 2020-05-27 | 2020-05-27 | Drill rod non-return short section capable of preventing gas from gushing out |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020923934.3U CN212154685U (en) | 2020-05-27 | 2020-05-27 | Drill rod non-return short section capable of preventing gas from gushing out |
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| CN212154685U true CN212154685U (en) | 2020-12-15 |
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| CN202020923934.3U Active CN212154685U (en) | 2020-05-27 | 2020-05-27 | Drill rod non-return short section capable of preventing gas from gushing out |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114233204A (en) * | 2021-12-08 | 2022-03-25 | 江苏和信石油机械有限公司 | Drilling and pumping integrated gas drill rod structure |
-
2020
- 2020-05-27 CN CN202020923934.3U patent/CN212154685U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114233204A (en) * | 2021-12-08 | 2022-03-25 | 江苏和信石油机械有限公司 | Drilling and pumping integrated gas drill rod structure |
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