CN206735275U - Large-reserve low-power-consumption skid-mounted sand conveying device - Google Patents

Abstract

The utility model discloses a skid-mounted sand conveying device with large storage capacity and low power consumption, which comprises a skid body base system. Sand feeding system: The sand feeding system consists of two sets of sand feeding modules on the left and right, and each sand feeding module includes a foldable belt conveyor. The middle part of the belt conveyor is installed through a rotating support, a belt unfolding cylinder and a belt lifting cylinder. On skid mount system. The sand storage and feeding system includes a fixed sand bin, a movable sand bin and a lifting cylinder. The discharge conveyor system includes a conveyor belt, a discharge belt and a discharge cylinder. It can realize the functions of large-capacity sand storage, rapid sand replenishment, and accurate measurement of sand volume, solve the problems of discontinuous sand addition and fluctuation of sand supply volume in large-scale fracturing construction, and meet the requirements of industrial large-scale fracturing.

Description

Large storage and low power consumption skid-mounted sand delivery device

technical field

The utility model relates to a device for continuously conveying and adding a large amount of quartz sand proppant in large-scale oil fracturing construction, in particular to a skid-mounted sand conveying device with large reserves and low power consumption.

Background technique

At present, hydraulic fracturing operation is a common production stimulation measure for oil, natural gas, shale gas and other energy exploitation at home and abroad, and the mixed glue of quartz sand and thickener is an indispensable working medium for fracturing operation. There are clear requirements for the addition ratio of sand and thickener glue. The traditional quartz sand addition (referred to as sand addition) is generally completed by the cooperation of sand tank trucks and sand mixer trucks. After the sand tank truck arrives at the fracturing site, the sand tank is tilted under the action of the lifting cylinder of the chassis. When the worker opens the sand opening valve, the quartz sand in the tank flows into the hopper of the sand mixer truck under the action of its own weight, and passes through the sand mixer truck. The screw elevator enters the mixing tank to be mixed with the thickener glue, and then pumped to the inlet of the fracturing pump. In this way, the adjustment of the amount of sand added is completely controlled by the workers manually, which cannot be detected and effectively controlled. However, the value of the amount of sand added during construction is obtained by converting the speed of the screw hoist, so there is a large error between the converted value and the actual value. . In addition, the current sand tank storage capacity of sand tank trucks is between 7-15 cubic meters. In order to meet the continuous sand supply requirements of fracturing, multiple sand tank trucks are usually used to alternately supply sand. time period. With the large scale of fracturing, the amount of sand added to a single well and single layer in China has reached 100 cubic meters. The problems of discontinuity and inaccuracy of traditional sand adding methods have become more prominent, which may easily lead to "sand plugging" accidents, resulting in The fracking operation failed.

So far, technical personnel at home and abroad have explored the guarantee of continuous sand delivery. One way is to use high pressure gas to transport quartz sand. The high-pressure gas is generated by the air compressor, and the quartz sand is transported from the sand tank truck to a large-capacity sand storage tank along the sealed high-pressure pipeline, and then put into the hopper of the sand mixer truck through a screw or belt conveyor. This continuous sand delivery method has a long delivery distance and can deliver sand to multiple locations, but the delivery pipeline is severely worn, the system is complicated, and the problem of sand delivery measurement is not solved. Another way is to use a belt transporter in conjunction with a trailer-type sand tank. The belt transport vehicle is a trailer-type sand tank for sand replenishment. The capacity of the trailer-type sand tank reaches 60 cubic meters. The belt conveyor at the bottom of the tank can transport the quartz sand in the tank to the hopper of the sand mixing vehicle. This method has a large amount of sand storage and less equipment wear, but still has the problem of not being able to measure the amount of sand added, and requires two equipments to be used together, so it occupies a large area and has high purchase and maintenance costs.

Contents of the invention

The purpose of the utility model is to provide a skid-mounted sand conveying device with large reserves and low power consumption.

The purpose of this utility model is achieved by the following technical solutions:

The skid-mounted sand conveying device with large storage capacity and low power consumption of the utility model includes a skid body base system, and the skid body base system is sequentially provided with a discharge conveying system, an automatic control system, a sand storage and feeding system, and a sand loading system from front to back. feeding system;

The sand filling system includes two sets of sand loading modules on the left and right, and each set of sand loading modules includes a foldable belt conveyor. The middle part of the belt conveyor is installed on the skid body base system through rotating support. A belt unfolding oil cylinder and a belt lifting oil cylinder are arranged between the belt conveyor and the rotating support, an upper hopper is arranged at the rear end of the belt conveyor, and a lower hopper is arranged at the front end.

It can be seen from the above-mentioned technical solution provided by the utility model that the large-capacity and low-power consumption skid-mounted sand device provided by the embodiment of the utility model can realize the functions of large-capacity sand storage, rapid sand replenishment, and accurate measurement of the amount of sand, and solve the problem of large The problem of discontinuous sand addition and fluctuation of sand supply volume in large-scale fracturing construction meets the requirements of industrialized large-scale fracturing.

Description of drawings

Fig. 1 is a schematic side view of the transportation state of the skid-mounted sand delivery device with large storage capacity and low power consumption provided by the embodiment of the utility model.

Fig. 2 is a schematic plan view of the transportation state of the skid-mounted sand delivery device with large storage capacity and low power consumption provided by the embodiment of the utility model.

Fig. 3 is a schematic side view of the working state of the skid-mounted sand conveying device with large storage capacity and low power consumption provided by the embodiment of the utility model.

Fig. 4 is a schematic plan view of the working state of the skid-mounted sand delivery device with large reserves and low power consumption provided by the embodiment of the utility model.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. . Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

The preferred embodiment of the skid-mounted sand conveying device with large reserves and low power consumption of the present invention is:

Including the skid body base system, the skid body base system is provided with a discharge conveying system, an automatic control system, a sand storage feeding system and a sand filling feeding system in sequence from front to back;

The sand filling system includes two sets of sand loading modules on the left and right, and each set of sand loading modules includes a foldable belt conveyor. The middle part of the belt conveyor is installed on the skid body base system through rotating support. A belt unfolding oil cylinder and a belt lifting oil cylinder are arranged between the belt conveyor and the rotating support, an upper hopper is arranged at the rear end of the belt conveyor, and a lower hopper is arranged at the front end.

The sand storage and feeding system includes a fixed sand bin and a movable sand bin sleeved inside or outside the fixed sand bin, and the front and rear ends of the movable sand bin are respectively provided with lifting cylinders.

The discharge conveyor system includes a conveyor belt and a discharge belt, the discharge belt is provided with a discharge oil cylinder, and the conveyor belt is arranged at the lower part of the sand storage and feeding system.

The large-storage and low-power consumption skid-loading sand device of the utility model can realize the functions of large-capacity sand storage, rapid sand replenishment, and accurate measurement of the amount of sand, and solve the problems of discontinuous sand addition and fluctuation of sand supply in large-scale fracturing construction , to meet the requirements of industrialized large-scale fracturing.

The embodiment of the utility model will be further described in detail below in conjunction with the accompanying drawings.

Specific implementation cases:

As shown in Figure 1, Figure 2, Figure 3, and Figure 4, a skid-mounted sand delivery device with large reserves and low power consumption of the utility model consists of a sand filling system 1, a sand storage feeding system 2, and a discharge conveying system 4. The skid body base system 5 and the automatic control system 3 are composed.

The skid body base 5 is used as the equipment foundation. The sand storage and feeding system 2 is welded and fixed to the skid body base 5 through columns.

During the transfer process, the device can be transported to the fracturing construction site by a flatbed truck. After the equipment is in place, the automatic control system 5 is first started, so that the two sand loading modules on the left and right of the sand filling feeding system 1 can be automatically controlled by hydraulic pressure to reach the working state. The belt unfolding oil cylinder 13 stretches out, and then the belt lifting oil cylinder 15 is lifted so that the foldable belt conveyor 12 presents a conveying state at a large inclination angle, and then the rotating support 14 is rotated about 15 degrees to facilitate the distance between the two upper hoppers 11 for easy transportation. The sand car is unloading, and the sand is transported to the lower hopper 16 by the foldable belt conveyor 12 with a large inclination angle and falls into the sand storage feeding system 2 . The sand storage and feeding system consists of a fixed sand bin 21, a movable sand bin 22 and a lifting cylinder 23. In order to meet the large-scale industrial fracturing requirements on site, it is required to continuously and stably supply sand grains. It automatically stretches out and raises to the set amount under lifting, and the maximum sand storage capacity of the sand storage and feeding system of the utility model can reach 40 cubic meters. When sand grains are needed in fracturing, the sand grains are transported to the designated position through the discharge conveying system 4. The discharge conveying system 4 is composed of a discharge oil cylinder 43, a conveying belt 41 and a discharge belt 42. The sand discharge valve and the speed of the conveyor are controlled. The linkage technology between them solves the problem of sand material measurement.

The utility model can realize the functions of large-capacity sand storage, rapid sand replenishment, and accurate measurement of the sand volume, solves the problems of discontinuous sand addition and fluctuating sand supply volume in large-scale fracturing construction, and meets the requirements of industrialized large-scale fracturing.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto, and any person familiar with the technical field can easily think of All changes or replacements should fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (3)

1. A kind of 1. big reserves low-power consumption skid sand conveying device, it is characterised in that including skid body support system, the skid body base system Discharging induction system, robot control system(RCS), storage sand feeding system and upper sand feeding-system are sequentially provided with system from front to back；

   The upper sand feeding-system includes left and right two and puts sand mo(u)ld block, and often put sand mo(u)ld block includes folding Belt Conveying respectively Machine, the middle part of the belt conveyor are arranged on the skid body support system by rotating support, the belt conveyor with Belt expansion oil cylinder is provided between the rotation support and belt elevating ram, the rear end of the belt conveyor are provided with feeding Bucket, front end are provided with hopper.
2. 2. big reserves low-power consumption skid sand conveying device according to claim 1, it is characterised in that the storage sand feeding system Including fixed sand warehouse and the activity sand warehouse being enclosed on inside or outside the fixed sand warehouse, the front-end and back-end point of the activity sand warehouse She You not elevating ram.
3. 3. big reserves low-power consumption skid sand conveying device according to claim 1 or 2, it is characterised in that the discharging conveying System includes belt conveyor and discharging belt, and the discharging belt is provided with unloading fuel tank, and the belt conveyor is located at the storage sand The bottom of feeding system.