CN2350522Y

CN2350522Y - Negative pressure blow-off device

Info

Publication number: CN2350522Y
Application number: CN 98245239
Authority: CN
Inventors: 李生莉; 赵玉鹏; 李性伟; 于欢
Original assignee: Research Institute Of Oil Production Technology Henan Petroleum Exploration Bureau
Current assignee: Research Institute Of Oil Production Technology Henan Petroleum Exploration Bureau
Priority date: 1998-10-16
Filing date: 1998-10-16
Publication date: 1999-11-24
Anticipated expiration: 2008-10-16

Abstract

The utility model relates to a negative pressure drainage device which is mainly used on a sewerage deposition tank in the ground engineering of the oil field and is used for removing the sludge deposited at the bottom of the sewerage deposition tank. The drainage device is mainly composed of a diffusion tube 1, a mixing tube 2, a sludge containing chamber 4, etc. which are connected in a sealing mode in turn. The inner cavity of the sludge containing chamber is provided with a discharge supporting air spout 3 which corresponds to the mixing tube 2 in a coaxial mode, and the exterior wall of the sludge containing chamber is connected with a sludge absorbing tube 6. After the device is adopted, negative pressure can be formed between the sludge containing chamber and the deposition tank, so that the sludge can be drained into the sludge containing chamber easily and removed from a big tank from a drainage tube effectively in time, therefore, the water quality in the tank is guaranteed, and the tank cleaning work amount is reduced.

Description

The negative pressure excretion machine

The utility model relates to a kind of negative pressure excretion machine, is mainly used on the sewage settling tank in the oilfield surface engineering, in order to get rid of the mud of bottom settlings.

About thousands of cubic meters, the removing problem of jar end mud is a technical barrier of being badly in need of solution usually for the sewage settling tank that the oil field is used, volume.At present, a kind of method that extensively adopts is: lay many drainage tubes at the bottom of the sewage settling tank.Drainage tube is exactly to bore a plurality of apertures to form on common steel tube.But since jar end mud than great, viscosity is high, and is mobile very poor, in jar, be difficult under the head of liquid flow out from drainage tube.In addition, the pressure on the steel pipe between the aperture equates, makes and forms dead space in the drainage tube, mud can not flow to the outer end from the inner end, can only flow out a bit from the outer end aperture at most, so year in and year out, the mud of bottom settlings is more and more, has only by having put clear jar of the laggard pedestrian worker of water, and is costly.Another kind method is: big pot bottom is made many infundibulates, drainage tube is connected on funnel bottom carries out drainage, this form also is to utilize jar interior fluid column self a pressure discharging, does not reach the purpose of timely and effective spoil disposal.

The purpose of this utility model is in order to overcome the deficiency of above spoil disposal technology, provide a kind of be installed in sewage settling tank jar at the bottom of, can increase jar relative pressure of end mud, improve the flow velocity of mud, impel mud to discharge the negative pressure excretion machine of big pot bottom timely and effectively.

The purpose of this utility model realizes with following technical proposals:

Anemostat, the mixing tube that this negative pressure excretion machine is mainly joined by sealing successively, receive mud chamber etc. and form, anemostat is tapered, and its big end and blow-off pipe join, receive the mud chamber the other end with help comb to join, help comb to receiving mud indoor chamber extension.Be provided with the row's of helping nozzle receiving the inner chamber middle part of mud chamber, nozzle and the mixing tube of the row of helping nozzle are in coaxial position, correspondence mutually, the other end of the row's of helping nozzle and help comb to join; Be connected to four mud guide pipes on the outer wall of mud chamber receiving, four mud guide pipes same horizontal plane uniform to around extend.Mud guide pipe one end with receive the mud chamber and communicate, the other end (end) is connected to horn mouth, the bottom connection of horn mouth and sewage settling tank.Stretch out and receive the outdoor comb that helps of mud and be connected with helping discharging tube.

In the time of need in jar, discharging mud, open and help the tapping line valve, produced throttling when helping the discharge opeing body, receiving the indoor formation low pressure chamber of mud, receive the mud chamber through forming negative pressure between mud guide pipe and the settling tank through nozzle.Mud is entered smoothly receive the mud chamber, discharge blow-off pipe through mixing tube, anemostat then.

Above mechanism has increased the relative pressure of mud at the bottom of the settling tank jar, has improved the flow velocity of mud, makes mud discharge big jar from blow-off pipe timely and effectively, thereby has guaranteed a jar interior water quality, has reduced tank-cleaning operation, has saved a large amount of tank-cleaning operation expenses

Below in conjunction with accompanying drawing embodiment of the present utility model is discussed in detail.

Fig. 1 is the structural representation of existing drainage tube

Fig. 2 is the structural representation of existing funnel;

Fig. 3 is the utility model structure sectional view;

Fig. 4 is a upward view of the present utility model.

The drainage tube that is used for blowdown that Fig. 1, Fig. 2 more extensively quote on the sewage settling tank for the oil field has now and the structural representation of funnel are because existing blowdown apparatus all is to utilize jar interior fluid column self pressure to carry out blowdown, inefficiency.

Fig. 3, Fig. 4 have represented the structure of a kind of embodiment of the present utility model.This embodiment mainly by anemostat 1, mixing tube 2, the row's of helping nozzle 3, receive mud chamber 4, help comb 5, blow-off pipe 8 etc. to form.The row's of helping nozzle 3 is in receives the inner chamber of mud chamber 4, helping on the comb 5 by screwed connection, the row's of helping nozzle 3 and helping between the comb 5 by the conical surface seal that is mutually 30 °, help the end of comb 5 connect outside introduce help tapping line 9.Anemostat 1 is tapered, and its small end is connected with mixing tube 2, and big termination is drawn a jar outer blow-off pipe 8.Will the row's of helping nozzle 3 pack into and receive in the mud chamber 4, receive and be connected to 8, four mud guide pipes 6 of four mud guide pipes on the outer wall of mud chamber 4 and stretch out in that same horizontal plane is uniform, the end of mud guide pipe 6 is connected to horn mouth 7.During assembling negative pressure excretion machine, must guarantee the axiality of the row's of helping nozzle 3 and mixing tube 2.Between anemostat 1 and the blow-off pipe 8, between anemostat 1 and the mixing tube 2, mixing tube 2 and receive between the mud chamber 4, receive mud chamber 4 and help between the comb 5, help comb 5 and help and must guarantee between the tapping line 9 to be tightly connected, present embodiment is welding.

Operating principle of the present utility model is such: assemble the negative pressure excretion machine by Fig. 3,4, and after simulation laboratory test is qualified, the horn mouth 7 of mud guide pipe 6 is installed on sewage settling tank bottom, quantity is installed decides according to the sludge volume of big jar every day.Connect and help tapping line 9 and blowdown pipeline 8.When needing spoil disposal for big jar, open the jar flood tide gate that helps tapping line 9, help discharge opeing to help comb 5 and the row's of helping nozzle 3 by helping comb line 9 to enter, because nozzle 3 diameters are much smaller than the internal diameter that helps comb 5, to helping discharge opeing to produce throttling, make and help discharge opeing pressure to reduce, flow velocity increases, form low pressure chamber in the mud chamber 4 receiving, the mud of big pot bottom is produced swabbing action, and mud will constantly be poured into to receiving mud chamber 4 by horn mouth 7 and mud guide pipe 6, be helped the discharge opeing suction to enter mixing tube 2 fully to mix by swiftly flowing again, through anemostat 1 deceleration supercharging, discharge big jar from blow-off pipe 8.

Claims

1. the negative pressure excretion machine of mud discharging at the bottom of the sewage settling tank jar that is used for oilfield surface engineering, mainly anemostat (1), the mixing tube (2) that joins by sealing successively, receive mud chamber (4) etc. and form, anemostat (1) is tapered, its big end and blow-off pipe (8) join, receive mud chamber (4) the other end with help comb (5) to join, help comb (5) to receiving mud chamber (4) inner chamber extension, it is characterized in that:

A. be provided with the row's of helping nozzle (3) receiving the inner chamber of mud chamber (4), the nozzle of the row's of helping nozzle (3) is coaxial corresponding with mixing tube (2), the other end with help comb (5) to join;

B. be connected to mud guide pipe (6) on the outer wall of mud chamber (4) receiving.

2. negative pressure excretion machine according to claim 1 is characterized in that, and receive the mud guide pipe that mud chamber (4) joins and have 4, they same horizontal plane uniform to around extend.

3. negative pressure excretion machine according to claim 1 and 2 is characterized in that, the end of mud guide pipe (6) is connected to horn mouth (7).