CN2690576Y

CN2690576Y - Anti-pollution wellhead device for water source well

Info

Publication number: CN2690576Y
Application number: CN 200420003506
Authority: CN
Inventors: 程志明; 邹仁彦; 詹永斌; 符书荣
Original assignee: Sinopec Henan Petroleum Exploration Bureau Hydropower Plant
Current assignee: Sinopec Henan Petroleum Exploration Bureau Hydropower Plant
Priority date: 2004-02-13
Filing date: 2004-02-13
Publication date: 2005-04-06
Anticipated expiration: 2014-02-13

Abstract

The utility model relates to an anti-pollution wellhead device for water source well, which belongs a mechanical device to prevent the water source well from polluting by the earth surface contamination, being especially applicable to the water source well using the electric submersible pump to pump. The wellhead device is equipped with an upper flange (2) and a lower flange (4), and a joint washer (6) is equipped between the upper flange (2) and the lower flange (4). The lower flange (4) connects with the well-pipe (5) by the means of welding or threaded jointing, and the upper flange (2) is equipped with a snorkel (10), a cable protection pipe (8) and a water level measuring pipe (7). The wellhead device can implement contamination isolating for the places which are easily water flooded such as the overbank and the delve and the large submergence water source well. The mounting position of the upper flange locates by the ascending pipe elbow rigidly links with the ground pipeline through the flange so that make lift-up and fall-off of the electric submersible pump very convenient.

Description

The anti-pollution wellhead assembly of water supply well

One, technical field

The utility model relates to the anti-pollution wellhead assembly of a kind of water supply well, belongs to the mechanical device that water supply well prevents to be subjected to the pollution of ground pollution thing, is specially adapted to the water supply well that uses electric submersible pump to draw water.

Two, background technology

The wellhead assembly of the water supply well that existing use electric submersible pump draws water is very simple, has plenty of the well head pedestal that stays with the deep well pump of eliminating, this well head pedestal is installed on the concrete pedestal above the water supply well well casing, in order to measure the convenience of groundwater table, also on concrete pedestal, leave one specially and survey the water level hole; Have plenty of the cast iron flange of a band lifting pipe elbow, be directly installed on the water supply well well casing, have an elongated slot on the cast iron flange, the electric submersible pump power cable is positioned at groove.This two classes wellhead assembly height overhead is all about 200mm, there is a common shortcoming, promptly can not implement the ground pollution thing to water supply well isolates, if water supply well is in river shoal, lowland, owing to rain heavily, reason well head such as river Flooding is during by water logging, ground sewage, silt particle, toxic waste etc. can directly pour in the water supply well, and underground water is caused severe contamination, and people healthy brought serious harm.In urban planning, attractive in appearance for the city, intentionally the water supply well wellhead assembly is located at below ground, wellhead assembly not tool to pollute the harm of buffer action just bigger.

Three, summary of the invention

The purpose of this utility model is can not implement the pollutant isolation at above-mentioned wellhead assembly to prevent the contaminated deficiency in water source, provides a kind of water supply well anti-pollution wellhead assembly.

Realize that the technical scheme that the utility model purpose is adopted is; mainly form by lifting pipe elbow and lifting pipe pipe nipple etc.; a lower flange is installed on the water supply well well casing; a dismountable upper flange is installed on lower flange; be provided with seal washer between upper flange and the lower flange and be connected, on upper flange, be equipped with and survey water level pipe, ventilating pipe and cable protection tube by installing bolt.

Adopt welding or screwed connection between water supply well well casing and the lower flange.The lifting pipe elbow adopts welding or bolt to be connected with the lifting pipe pipe nipple, surveys water level pipe, ventilating pipe and cable protection tube and is welded on the upper flange.But survey the plug sealing of the upper end mounting strap screw thread of water level pipe, have screw thread to extend as required on the ventilating pipe.

Adopt the technical solution of the utility model can effectively solve existing water supply well wellhead assembly and can not prevent that the ground pollution thing from entering the problem of well internal contamination water quality, conveniently remove electric submersible pump and monitoring groundwater table, and have install easy, easy to use, can actively effect such as effectively isolate to the ground pollution thing.

Four, description of drawings

Fig. 1 is an assembly structure schematic diagram of the present utility model.

Fig. 2 is the structural representation of the utility model lower flange.

Fig. 3 is the top view of the utility model upper flange.

Fig. 4 is the I-I ｀ sectional view of Fig. 3 upper flange.

Five, the specific embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

Referring to accompanying drawing, lower flange 4 is enclosed within well casing 5 external application welding manners and connects; The last plane of the upper surface of well casing 5 and lower flange 4 in a horizontal plane, the shape of seal washer 6, the size identical with lower flange 4.Connect by bolt 13 between the last

lower flange

2 and 4.

Upper flange 2 links together by bolt 12 with lifting pipe pipe nipple 1, lifting pipe elbow 3, and on joint face, add seal washer and seal, the current that electric submersible pump is extracted out can pass through in the mesopore, lifting pipe elbow 3 inflow surface pipelines of lifting pipe pipe nipple 1, upper flange 2.Water table measure, the free lifting of groundwater table and being lowered to of electric submersible pump power cable line for convenience; on upper flange 2, be provided with survey water level pipe 7, ventilating pipe 10, cable protection tube 8 by welding manner; for making things convenient for electric submersible pump to be lowered to and mentioning; on upper flange 2, be provided with a pair of nose 11 that hangs; the available method lifting identical with the lifting lifting pipe; wherein, having screw thread on the ventilating pipe 10 can extend as required, surveys the plug seal cover that water level pipe 7 is equipped with the band screw thread.Sealing between cable protection pipe 8 and the cable 9 is to pack tightly the mouth of pipe with insulating tape, after coating layer of adhesive on the insulating tape, wraps one deck plastic tape again.Survey being lowered to smoothly of water level lining rope for convenience, survey the position of water level pipe 7 and ventilating pipe 10 and can change mutually, if water supply well may be not high by the water level of water logging, ventilating pipe 10 can unite two into one with survey water level pipe 7, but can not load onto the plug seal cover.As shown in Figure 1, this anti-pollution wellhead assembly positions by lifting pipe elbow 3 and being rigidly connected of surface line, when mounted, at first with the wellhead assembly installation in position, the flange of lifting pipe elbow 3 is connected closely with flange on the short tube that pipeline is connected, then short tube is welded on the surface line, positions, make removing of electric submersible pump very convenient by the correct rigging position of surface line to upper flange 2.

Claims

1, the anti-pollution wellhead assembly of water supply well; mainly by lifting pipe elbow (3) and lifting pipe pipe nipple (1), etc. form; it is characterized in that: a lower flange (4) is installed on water supply well well casing (5); a dismountable upper flange (2) is installed on lower flange (4); be provided with seal washer (6) between upper flange (2) and the lower flange (4) and be connected, survey water level pipe (7), ventilating pipe (10) and cable protection tube (8) are installed on upper flange (2) by bolt (13).

2, the anti-pollution wellhead assembly of water supply well according to claim 1 is characterized in that: lower flange (4) adopts welding or screwed connection with water supply well well casing (5).

3, the anti-pollution wellhead assembly of water supply well according to claim 1 is characterized in that: upper flange (2) is gone up survey water level pipe (7), ventilating pipe (10) and cable protection tube (8) and is welded to connect with this flange employing.

4, the anti-pollution wellhead assembly of water supply well according to claim 1 is characterized in that: lifting pipe elbow (3) adopts welding or bolt (12) to be connected with lifting pipe pipe nipple (1).

5, the anti-pollution wellhead assembly of water supply well according to claim 1 is characterized in that: ventilating pipe has screw thread on (10), surveys water level pipe (7) but the plug of upper end mounting strap screw thread.