SU1492021A1 - Mixer for making plugging composition - Google Patents

Abstract

The invention relates to the mining industry and can be used in the cementing of wells. The goal is to increase reliability by providing the ability to check the operation of the plant under load, loosening cement in the bunker, reducing the load during start-up and operation of the horizontal load auger and its drive, and reducing cement loss. For this, between the output neck 5 and the signal hatch 7 there is a branch pipe connected on one side with the lower end of the housing of the upper part of the loading auger 8, and on the other hand with the outlet branch 4. The connection of the upper and lower parts of the screw 8 is made detachable for installing the bearing unit 12 . To prepare the cement slurry, the upper part of the screw 8 is put into operation, then the discharge screw, water is fed into the mixing device with a pressure corresponding to the selected mode. The speed of the screw 8 is brought to the workers, then the cement is poured into the mixing device. 1 hp ff, 3 ill.

Description

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The invention relates to the mining industry, and HNJCHHO to the mixing technique, which provides for the preparation of solutions and: dry cement and mixing fluid for use in the oil and gas industry for well cementing.

The purpose of the invention is to increase reliability by making it possible to check the operation of the plant under load, loosening cement in the bunker, reducing the load during start-up and operation of the horizontal unloading screw and its drive, and reducing the loss of cement.

Figure 1 shows the mixing plant, general view; in fig. 2 - connection of the outlet nozzle of the bunker with the upper part of the loading auger; FIG. 3 is a section A-A in FIG. one.

The mixing plant for preparing the cement slurry consists of a transport base — automobile 1, a hopper 2, a horizontal auger 3 placed in the bunker and an outlet nozzle A having an outlet 5 with a slide gate 6 and installed after the last signal hatch 7, an inclined loading auger with a housing consisting of the upper 8 and lower 9 (FIG. 3) of the parts connected by the hinge-coupling, the drive 10 of the screws of the hydraulic mixing device 11 installed under the outlet neck, the sub-section 12

Bunker 2 has loading hatches 13.

The body of the upper part of the loading auger 8 has a discharge opening 1A and the upper part of the loading auger 8 with the body above the bunker is made protruding with an additional discharge opening 15, the body is fixed to the rear wall and to the bottom of the hopper. The discharge opening 14 is filled with a grill, the cell dimensions of which are smaller than the gap between the discharge screw 3 and the bottom of the hopper. The lower end of the case of the upper part of the loading auger is connected by means of the nozzle 16 (Fig. 2) to the outlet nozzle 4 in the area between the outlet neck 5 and the signal hatch 7. The connection of the upper and lower parts of the loading auger

vpkisheio detachable to install a 1nikovogo node. The lower end of the overhead shaft of the upper part of the loading screw 8 rests on the bearing assembly 12, which is removable and is installed instead of the lower part of the loading auger after the cement has been lost in the hopper

loading auger.

The lower part of the loading sleeve 9 (FIG. 3) is detachable from the top, the screws of the upper and lower parts are connected by a coupling, and their bodies are made by means of a quick-release connection. Similarly, the connection to the upper part of the loading auger and bearing unit 12 "V. body of the lower loading auger

there is a loading opening on which the removable tray 17 "is installed

Mixing installation works as follows.

After inspection and testing of the equipment operation, the mixing plant is fed without load for loading with cement through the loading hatches 13 of the hopper 2 or with the help of loading

auger. To fill the hopper with the loading auger instead of the bearing unit 12, no one is installed; iniio part of the loading screw 9, and at its loading opening

install tray 17. Nod additional discharge opening 15 install capacity for collecting pieces of cement stone and extraneous P1), Load loading screw is put into operation and cement is fed through tray 17. When loading, the grating of the discharge opening 14 retains random objects, with a screw they move to the additional discharge opening 15 and then enter the tank for t-rx collection. After filling the hopper with cement; The loading auger is stopped; instead of the lower part 9 of the loading auger, the bearing unit 12 is installed, the lower part 9 and the tray 17 are set in the transport position. Next, the equipment of the mixing plant is tested under load. To do this,

closed gate valve 6 put into operation the upper part of the loading auger 8, and then the unloading auger 3, gradually increase the speed of the augers to the workers. Hopper cement

the unloading screw 3 is fed into the upper part of the loading auger 8 and returns through pa; the loading overyes 14 with the grating into the bunker. Simultaneously with checking the installation under load, pieces of cement stone and random objects are separated, cement is mixed and loosened. Flushed cement has a lower tendency to hang, this ensures a more even flow of cement into the mixing device when preparing the mortar.

After testing under load, the mixing plant is directed to the place where the cement slurry is prepared.

During storage (transportation) of cement in the bunker 2 and before putting the plant into operation, it is checked again under load. The test performed under load excludes the stopping of the mixing plant during start-up and during preparation of the solution due to excess load on the screw and its drive, malfunctions and breakdowns

After checking the mouth}) onks under load proceed to the preparation of cement slurry as follows. When the gate valve 6 is closed, the upper part of the loading auger 8 is put into operation, then the unloading auger 3 (cement begins to circulate: the bunker - the upper part of the loading auger - bunker), is fed into the mixing device J1 with a pressure corresponding to the selected mode, the revolutions of the screws are also an argument t up workers. Then, opening the slide valve 6, the cement is directed to the mixing device 11. Such an order of activation of the mixing plant into operation, the contraction time to the selected mode, since the cement is not supplied to the mixing device simultaneously with the activation of the screws, after the output of revolutions of the auger to the operating mode. This reduces the yield of unconditioned mortar, reducing cement loss. Overflow

The cops are returned to the disc in 7, which is also

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Claims (2)

1. Mixer for priming a tampon of a liquid solution, with Q holding a hopper with a loading hatch, an outlet nozzle having an output nipple with a slide gate and installed) after the last signal hatch, are horizontal; Hepxiitni and the lower parts, connected by a siren with a coupling, 0 case of the upper part of the logrone the screw is made with a discharge opening connected with the cavity of the bunker and connected to the transport center of the tansy of the second part of the loading gondisk 6i.icTpop. pomnom 5 connection, the uiiitKOB drive and the hydraulic mixing1 {node, which is installed under the throat port, so that, for the purpose of turning; on; and — by means of enabling rTjionrtiKu to operate the installation under; load, tear cement} the tucker, reduce load on (. and rape on the horizontal G — a fine auger and its drive, and mind-hlp1; 11 tce0 It is equipped with a pipe installed between the output neck and the signal hatch and connected on the one hand to the lower housing of the upper part of the loading auger and on the other hand to the flue pipe, while connecting the upper and lower parts of the loading auger to be detachable for mounting the bearing unit. I 2. Installation under item 1, about tl and so that the discharge opening of the casing of the upper part of the BbmojiiieHO loading auger with a grill, the cell size of which is less than the gap between the unloading screw and the bottom of the bunker, and the upper part of the loading auger with the casing above the bunker is filled serving with additional mixing device surplus valuable discharge hole sixteen 2 / 7 Fig.z