Purification device for slurry mixing system of negative pressure type well cementation equipment

Abstract

The utility model discloses a negative pressure type well cementation equipment slurry mixing system purifying device which comprises a negative pressure device and a dust collecting device, the negative pressure device generates negative pressure to suck dust into the dust collecting device, and the negative pressure device and the dust collecting device are both installed on well cementation equipment. The negative pressure device is a dust suction fan, the dust suction fan is connected with the ash discharge port of the diffusion groove through a pipeline, and an atomizer is installed on the pipeline and used for changing dust in the pipeline into cement paste and then enabling the cement paste to flow back. According to the utility model, a set of negative pressure type purification device is additionally arranged on the basis of a slurry mixing system of the conventional well cementation equipment, and cement dust generated at an ash discharge port of the slurry mixing system is subjected to two-stage filtration, so that the tail gas is purified, the environmental pollution is reduced, and meanwhile, the cement dust is recycled and fully utilized.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil and gas field exploitation technical field, more specifically, the utility model relates to a kind of negative pressure type cementing equipment mortar mixing system purification device. BACKGROUND

[0002] Cementing equipment mortar mixing system is mainly composed of mixer, diffusion tank, mortar mixing tank and the like, cement ash and water are initially mixed by mixer and then enter mortar mixing tank through diffusion tank.Cement ash is pressurized and blown into mixer by ash tank, water is supplied by metering tank or external water source into mixer, and gas brought by cement ash and water is discharged from ash discharge port of diffusion tank, and a small amount of cement ash is carried out.

[0003] At present, rubber elbow is usually installed at ash discharge port of cementing equipment mortar mixing system to change the discharge direction of cement ash, but no purification and dust removal treatment is performed, and cement dust is diffused in air to cause pollution and great harm to human health.Another way is to increase filter device at ash discharge port, but filter device causes resistance in the process of gas discharge, which reduces the exhaust capacity of ash discharge port, and part of gas and dust is discharged from liquid level of mortar mixing tank, which makes it difficult for operator to observe liquid level, and there is risk of operation error, and dust carried seriously harms human health. SUMMARY

[0004] An object of the utility model is to provide a kind of negative pressure type cementing equipment mortar mixing system purification device, solve the problems existing in ash discharge port of existing cementing equipment mortar mixing system, install a set of negative pressure type purification device based on the basis of existing cementing equipment mortar mixing system, carry out two-stage filtration to cement dust generated from ash discharge port of mortar mixing system, purify tail gas, reduce environmental pollution, and achieve the purpose of recycling cement ash for full utilization.

[0005] To solve the above technical problems, the utility model provides a kind of negative pressure type cementing equipment mortar mixing system purification device, including negative pressure device and dust collection device, dust is sucked into dust collection device by negative pressure generated by negative pressure device, and negative pressure device and integrated device are installed on cementing equipment;The dust extraction fan is connected with ash discharge port of diffusion tank through pipeline, and atomizer is installed on the pipeline to change cement dust in the pipeline into cement slurry and then return.

[0006] Preferably, the dust extraction fan is adjusted according to actual situation to adjust the size of negative pressure, and the atomizer is provided with valve for controlling opening and closing and adjusting the size of atomization amount.

[0007] Preferably, the dust collection device is detachable dust bag, and the dust bag is connected with negative pressure device through pipeline, and portable clamp is arranged on the pipeline to quickly replace the dust bag.

[0008] Preferably, the atomizer sprays clean water, and the atomizer is connected to the outlet of the jet pump through a water pipeline, and a filter is arranged on the water pipeline to filter the clean water.

[0009] Preferably, the pipeline comprises a vertical pipe and a horizontal pipe arranged in an L shape, the vertical pipe is connected to the ash outlet of the diffusion tank, the horizontal pipe is connected to the dust extraction fan, the atomizer nozzle is arranged on the horizontal pipe and is installed in a position concentric with the vertical pipe, and the atomizer nozzle is arranged towards the ash outlet of the diffusion tank.

[0010] Preferably, the dust extraction fan is connected to the gas pipeline of the cementing equipment through a gas pipeline.

[0011] The utility model has at least the following beneficial effects:

[0012] 1. The utility model can directly introduce the filtered water from the outlet of the jet pump into the tail gas treatment pipeline, so that the unblended cement ash in the cementing equipment is returned to the slurry mixing tank in the form of cement slurry, thereby reducing environmental pollution and the harm of dust to human body while fully utilizing cement and avoiding waste.

[0013] 2. The utility model can avoid the diffusion of residual cement ash and enhance the purification effect of the device by sucking the uncleaned cement ash at the nozzle into the dust collection bag through the dust extraction fan.

[0014] 3. The dust extraction fan generates negative pressure during work, thereby increasing the flowability of the gas at the ash outlet and enhancing the purification effect of the device.

[0015] 4. The dust collection bag can be replaced irregularly according to the use condition, thereby prolonging the service life of the device.

[0016] Other advantages, objects and features of the utility model will be embodied partly through the following description, and will be understood by those skilled in the art through research and practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model. DETAILED DESCRIPTION

[0018] In order to better understand the purpose, structure and function of the utility model, the utility model will be further described in detail below with reference to the drawings, so that those skilled in the art can implement the utility model according to the description.

[0019] It should be noted that in the description of the utility model, the terms "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0020] As shown in Figure 1 The utility model provides a kind of slurry mixing system purification device of negative pressure type cementing equipment, including negative pressure device and dust collection device, negative pressure is generated by negative pressure device and dust is inhaled into dust collection device, negative pressure device and integration device are installed on cementing equipment;The negative pressure device is dust extraction fan, and dust extraction fan is connected with diffusion groove ash outlet by pipeline, and atomizer is mounted on pipeline to change the dust in pipeline into cement slurry and then backflow.

[0021] The device of the utility model includes first water pipeline 1, second water pipeline 3, filter 2, atomizing nozzle 4, tail gas treatment pipe 5, dust extraction fan 6, clamp 7, dust collection bag 8, air pipeline 9, ball valve 11. One end of first water pipeline is connected with ball valve, and the other end is connected with filter;One end of second water pipeline is connected with filter, and the other end is connected with atomizing nozzle;Atomizing nozzle is fixed on tail gas treatment pipe, one end of tail gas treatment pipe is fixed on diffusion groove ash outlet 10, and the other end is connected with dust extraction fan, and the other end of dust extraction fan is detachably connected with dust collection bag through clamp. Water pipeline is first water pipeline and second water pipeline on the two sides of filter respectively.

[0022] Further, the atomizer sprays clean water, and the ball valve is connected to the outlet cleaning pipeline interface of the jet pump through a tee joint, so that the purification device can directly use the water source provided by the cementing equipment, and the problem of water supply difficulty in the field operation is solved. A filter is mounted on the water pipeline to filter the clean water and prevent the atomizing nozzle from being blocked.

[0023] Further, the tail gas treatment pipe is composed of a vertical pipe and a horizontal pipe arranged in an L shape, the vertical pipe is fixed on the diffusion groove ash outlet, and the horizontal pipe is connected with the dust extraction fan. The atomizing nozzle is installed on the horizontal pipe of the tail gas treatment pipe and is installed in a concentric position with the vertical pipe, and the nozzle faces downward.

[0024] Further, the dust extraction fan is driven by the air pipeline from the air pipeline of the cementing equipment.

[0025] Further, the dust extraction fan can be adjusted in three power levels according to the actual situation to avoid excessive wind speed to suck water mist and insufficient wind speed to suck dust.

[0026] Further, the atomizer is provided with a valve for controlling opening and closing and adjusting atomization amount.

[0027] Further, the bag opening of the dust collection bag is sleeved on the dust extraction fan and is sealed and connected through a portable clamp for quickly replacing the dust collection bag.

[0028] During cementing operation, the ball valve is opened, and the clean water is filtered through the filter and sprayed into the tail gas treatment pipe through the atomizing nozzle, so that the cement ash is changed into cement slurry and flows back into the slurry mixing tank for full utilization.

[0029] The utility model discloses a negative pressure type purification device, which comprises a filter device, a negative pressure device, a tail gas treatment pipe and a slurry mixing tank.

[0030] It can be understood that the utility model is described through some embodiments, and those skilled in the art know that various changes or equivalent replacements can be made to the features and embodiments without departing from the spirit and scope of the utility model. Although the embodiments of the utility model have been disclosed as above, it is not limited to the application listed in the specification and the embodiments, and it can be fully applied to various fields suitable for the utility model. For those skilled in the art, other modifications can be easily realized, and therefore the utility model is not limited to specific details and the drawings shown and described herein without departing from the general concept defined by the claims and the equivalent range.

Claims

1. A purification device for a slurry mixing system of a negative pressure cementing equipment, characterized in that, The dust collecting device and the negative pressure device are installed on the cementing equipment, the negative pressure device is a dust extraction fan, the dust extraction fan is connected with the ash discharge port of the diffusion groove through a pipeline, and an atomizer is arranged on the pipeline to change the dust in the pipeline into cement slurry and then return the cement slurry.

2. The negative pressure cementing equipment slurry mixing system purification device of claim 1, wherein, The dust extraction fan is arranged to adjust the negative pressure according to actual conditions, and a valve is arranged on the atomizer to control opening and closing and adjust the atomizing amount.

3. The negative pressure cementing equipment slurry mixing system purification device of claim 1, wherein, The dust collecting device is a detachable dust collecting bag, the dust collecting bag is connected with the negative pressure device through a pipeline, and a portable clamp is arranged on the pipeline to quickly replace the dust collecting bag.

4. The negative pressure cementing equipment slurry mixing system purification device of claim 1, wherein, The atomizer sprays clean water, the atomizer is connected with a water injection pump through a water pipeline, and a filter is arranged on the water pipeline to filter the clean water.

5. The negative pressure cementing equipment slurry mixing system purification device of claim 1, wherein, The pipeline comprises a vertical pipe and a horizontal pipe which are arranged in an L shape, the vertical pipe is connected with the ash discharge port of the diffusion groove, the horizontal pipe is connected with the dust extraction fan, the atomizing nozzle of the atomizer is arranged on the horizontal pipe and is installed at a position concentric with the vertical pipe, and the atomizing nozzle is arranged to face the ash discharge port of the diffusion groove.

6. The negative pressure cementing equipment slurry mixing system purification device of claim 1, wherein, The dust extraction fan is connected with the gas pipeline of the cementing equipment through a gas pipeline to be driven by gas.

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