CN217206388U - Blowout-preventing sealing device for hole or wellhead - Google Patents
Blowout-preventing sealing device for hole or wellhead Download PDFInfo
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- CN217206388U CN217206388U CN202221019460.5U CN202221019460U CN217206388U CN 217206388 U CN217206388 U CN 217206388U CN 202221019460 U CN202221019460 U CN 202221019460U CN 217206388 U CN217206388 U CN 217206388U
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Abstract
The utility model relates to a sealing device is prevented spouting by hole or well head, including upper gate valve, upper bracket, lower carriage, lower floor's gate valve, base and sealed pad, upper gate valve, upper bracket, lower carriage, lower floor's gate valve from last to adorning on the base down in proper order, the base is fixed on the basis of construction, fills up the seal gasket that has certain thickness between base and the basis. The utility model is used for the construction of becoming the well on the construction working face of low headroom, high water head can prevent effectively that hole (well) mouth groundwater from gushing, flooding construction working face to ensure well construction safety.
Description
Technical Field
The utility model relates to an underground works pore-forming drill way prevents spouting sealing device especially relates to a novel downcomer well hole mouth prevent spouting sealedly, belongs to civil engineering groundwater control technical field.
Background
In the construction of underground engineering pore-forming, dewatering well pore-forming and the like, when the underground water level is higher than the construction working surface, a high protective cylinder is generally driven firstly, and the construction working surface is elevated to be above the water level surface so as to prevent the underground water from flooding the working surface and being incapable of normal construction. In the underground space, because the construction working surface is far lower than the underground water level and the clearance of the underground space structure is relatively low, the construction measures such as the construction working surface is not adopted to be elevated. Therefore, the well forming construction of the pore-forming in the underground space, particularly the underground water precipitation well, becomes a difficult problem of the underground engineering construction in the environment. How to construct a well on the construction working face lower than the underground water level to prevent the orifice underground water from gushing and flooding the construction working face is the key to solve the difficult problem of hole-forming construction in the underground space.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide a hole or well head blowout prevention sealing device, the construction of becoming a well on the construction working face that low headroom and be less than ground water level can prevent effectively that hole or well head groundwater from gushing, flooding construction working face to ensure well construction safety.
In order to solve the technical problem, the technical scheme of the utility model is that: the utility model provides a hole or well head prevent spouting sealing device, includes upper gate valve, upper bracket, lower carriage, lower floor's gate valve, base and sealed the pad, upper gate valve, upper bracket, lower carriage, lower floor's gate valve from last to adorning on the base down in proper order, the base is fixed on the basis of construction, fills up the seal gasket that has certain thickness between base and the basis.
Further, the upper layer gate valve is a sealing valve which can be opened and closed in the radial direction and has an adjustable drift diameter.
Further, the lower gate valve is an inserting plate opening and closing type sealing valve.
Furthermore, the upper bracket is provided with a sand filtering and mud ball filling port of the dewatering well.
Further, the base is provided with a slurry outlet and a slurry supplementing port for pore-forming construction and a pressure monitoring port.
The utility model has the advantages that:
the utility model provides a pair of sealing device is prevented spouting by hole or well head, when pore-forming construction on the higher working face of flood peaks such as underground space, deep basal pit bottom, can effectively prevent the emergence that the groundwater gushes, soaks the working face, ensures the construction safety under the high flood peak. And the construction can be normally carried out without driving a high casing to raise the construction working surface to be higher than a water head.
Drawings
FIG. 1 is a schematic view of a blowout preventer seal for a hole or wellhead according to the present invention;
description of reference numerals:
1-a drill rod; 2-sealing the adjusting ring; 3-upper gate valve; 4-sand filtering and mud ball filling port; 5-lower support; 6-a drill bit; 7-lower layer gate valve; 8-a pulp supplementing port; 9-a sealing gasket; 10-a base; 11-a pulp outlet; 12-a pressure monitoring port; 13-filtering sand and plugging a grouting filling port; and 14, upper support.
Detailed Description
In order to make the present invention more comprehensible, a preferred embodiment is described in detail below with reference to the accompanying drawings.
As shown in figure 1, the utility model discloses a hole or well head blowout prevention sealing device, including upper gate valve 3, upper bracket 14, lower carriage 5, lower floor's gate valve 7, base 10 and sealed the pad 9. The upper end of the base 10 is connected with the lower support 5 through the lower-layer gate valve 7, the upper end of the lower support 5 is connected with the upper-layer gate valve 3 through the upper support 14, the base 10 is fixed on the construction foundation, and a sealing gasket 9 with a certain thickness is arranged between the base 10 and the foundation.
Preferably, the upper layer gate valve 3 is a sealing valve which can be opened and closed radially and has an adjustable drift diameter, and the sealable drift diameter of the upper layer gate valve 3 is changed by the sealing adjusting ring 2, so that the range of the drift diameter is wider.
Preferably, the lower gate valve 7 is an insert plate opening and closing type sealing valve.
Preferably, the base 10 is provided with a slurry outlet 11 and a slurry supplementing port 8 for hole forming construction and is provided with an orifice pressure monitoring port 12 in consideration of slurry output and slurry supplementing during hole forming of the downcomer well.
Preferably, the upper bracket 14 is provided with a sand filtering and mud ball filling port 4 and a sand filtering and plugging grouting filling port 13 in consideration of sand filtering filling of the downcomer well and plugging between the ground layers;
when in use, the base 10 and the sealing gasket 9 are fixed on a construction foundation, and the lower-layer gate valve 7 and the lower bracket 5 are sequentially connected in series and arranged on the base 10; connecting a drill bit 6 and a drill rod 1, then placing the drill bit and the drill rod into an inner cavity of a lower support 5, and installing an upper support 14 and an upper layer gate valve 3; closing the upper layer gate valve 3, opening the lower layer gate valve 7, and normally forming holes; after the hole is formed, lifting the drill bit 6 to the lower layer gate valve 7, and closing the lower layer gate valve 7 in the inner cavity of the lower bracket 5; and (5) resetting the upper bracket 5 after the upper bracket 5 is disassembled and the drill bit 6 is taken out, and finishing the pore-forming construction.
Claims (5)
1. A hole or well head blowout prevention sealing device is characterized in that: including upper gate valve, upper bracket, lower carriage, lower floor's gate valve, base and sealed the pad, upper gate valve, upper bracket, lower carriage, lower floor's gate valve from last to adorning on the base down in proper order, the base is fixed on the basis of construction, fills up the seal gasket that has certain thickness between base and the basis.
2. A bore or wellhead blowout preventer seal according to claim 1, wherein: the upper gate valve is a sealing valve which can be opened and closed in the radial direction and the drift diameter of which can be adjusted.
3. A bore or wellhead blowout preventer seal according to claim 1, wherein: the lower gate valve is an inserting plate opening and closing type sealing valve.
4. A bore or wellhead blowout preventer seal according to claim 1, wherein: the upper bracket is provided with a sand filtering and mud ball filling port of the dewatering well.
5. A bore or wellhead blowout preventer seal according to claim 1, wherein: the base is provided with a slurry outlet and a slurry supplementing port for pore-forming construction and a pressure monitoring port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221019460.5U CN217206388U (en) | 2022-04-29 | 2022-04-29 | Blowout-preventing sealing device for hole or wellhead |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221019460.5U CN217206388U (en) | 2022-04-29 | 2022-04-29 | Blowout-preventing sealing device for hole or wellhead |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217206388U true CN217206388U (en) | 2022-08-16 |
Family
ID=82776309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221019460.5U Active CN217206388U (en) | 2022-04-29 | 2022-04-29 | Blowout-preventing sealing device for hole or wellhead |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217206388U (en) |
-
2022
- 2022-04-29 CN CN202221019460.5U patent/CN217206388U/en active Active
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