CN206414898U - A New Horizontal Filter Desander - Google Patents

Abstract

The utility model discloses a novel horizontal filter desander, which comprises a horizontal cylinder body and a reverse-wound welded stainless steel screen pipe arranged in the horizontal cylinder body, and medium inlets and quick-opening valves are respectively arranged at both ends of the horizontal cylinder body. Blind plate, the medium outlet is set downward in the middle of the horizontal cylinder. Compared with the prior art, the utility model has the following advantages: the frequency of sand discharge is reduced, and the efficiency of equipment use is improved; the precision of sand removal is improved, and damage to downstream equipment is reduced; sand discharge is convenient, and labor intensity is reduced; The tube is easy to install and disassemble and is not easy to damage.

Description

A New Horizontal Filter Desander

technical field

The utility model relates to a novel horizontal filter sand remover.

Background technique

At present, hydraulic fracturing is commonly used in shale gas exploitation. When mining, a large amount of water mixed with mud sand and a small amount of chemical substances are injected into the well. The main component of mud sand is 30-100 mesh ceramsite. The ceramsite has a large amount and high hardness. The amount of sand added to a single well is relatively large. If this part of ceramsite and mud sand are not separated, serious erosion will occur to downstream equipment and pipelines. Therefore, effective sand removal is very important.

The existing horizontal desander adopts slotted screen pipe, and the medium outlet is upward. The shale gas containing water and gravel enters the desander along the medium inlet, the gravel is deposited in the screen, the liquid is deposited in the equipment, and the filtered medium and unseparated gravel are sent to the downstream pipeline. Due to the low filtration precision of the slotted screen, generally around 0.20mm, when the unseparated gravel passes through the desander to the downstream pipeline and valve, it will scour the inner wall of the pipeline and valve, resulting in damage to the valve and pipeline and accidents.

According to field practice, it is found that the existing desander has the following deficiencies:

First, the medium outlet of the desander is upward, and the liquid in the equipment cannot be removed, which leads to the clogging of the screen due to liquid, which not only reduces the accuracy and flow area of the screen, but also increases the sand discharge frequency of the equipment.

Second, the ceramsite used in shale gas is generally between 0.10mm and 0.50mm. The minimum filtration diameter of the slotted screen is 0.20mm, and the sand and gravel with a diameter of less than 0.20mm cannot be separated by the screen. The separation efficiency is low.

Third, because the liquid is deposited inside the equipment, every time the quick-opening blind plate is opened to discharge the sand, a large amount of liquid with gravel will be gushed out, causing environmental pollution.

Fourth, when loading and unloading screen tubes, hard connections are used, which may easily cause damage to the screen tubes.

Utility model content

The utility model overcomes the shortcomings in the prior art and provides a novel horizontal filter desander.

The technical scheme of the utility model is: a new horizontal filter desander, including a horizontal cylinder and a reverse-wound stainless steel screen installed in the horizontal cylinder, and medium inlets are respectively arranged at both ends of the horizontal cylinder And the quick opening blind plate, the medium outlet is set downward in the middle of the horizontal cylinder.

Further, a flexible sealing connection device is provided between the medium inlet and the reverse-wound stainless steel screen pipe.

Further, a supporting guide rail is provided between the reverse-wound stainless steel screen pipe and the horizontal cylinder body.

Further, a compression device is provided between the back-wound welded stainless steel screen pipe and the quick-opening blind plate.

Further, a handle is provided on the back-wound stainless steel screen pipe.

Further, differential pressure transmitters are respectively arranged at the medium inlet and the medium outlet.

Further, a vent is provided on the upper part of the horizontal cylinder.

Further, a saddle is provided at the lower part of the horizontal cylinder.

Further, the precision of the reverse-wound stainless steel screen pipe is 0.10mm.

Compared with the prior art, the utility model has the following advantages: the frequency of sand discharge is reduced, and the efficiency of equipment use is improved; the precision of sand removal is improved, and damage to downstream equipment is reduced; sand discharge is convenient, and labor intensity is reduced; The tube is easy to install and disassemble and is not easy to damage. The specific performance is as follows:

1. The medium outlet is set downward in the middle of the shell. Due to the influence of gravity, the medium outlet of the equipment discharges the filtered medium at the same time, taking away the deposited liquid, avoiding the blockage of the screen due to liquid, and ensuring the accuracy of the screen. and circulation area, reducing the frequency of sand discharge and improving the efficiency of equipment use.

2. To improve the precision of sand removal, the precision is increased to 0.10mm by adopting reverse-wound welded stainless steel screen pipe.

3. Avoid environmental pollution caused by a large amount of liquid with gravel gushing out when the quick-opening blind plate is opened for sand discharge, which facilitates sand discharge operations and reduces labor intensity.

4. An easy-to-connect sealing form is adopted between the reverse-wound welded stainless steel screen pipe, the sealing connection device and the quick-opening blind plate, which ensures sealing and is convenient for installation and disassembly. Compared with the current slotted screen, the rigidity of the screen is ensured and it is not easy to be damaged.

Description of drawings

The utility model will be explained by way of example and with reference to the accompanying drawings, wherein:

Fig. 1 is the structural representation of the utility model.

detailed description

A new type of horizontal filter desander, as shown in Figure 1, includes: medium inlet 1, differential pressure transmitter 2, sealing connection device 3, head 4, equipment cylinder 5, manual vent 6, rewinding Welded stainless steel screen tube 7, quick opening blind plate 8, saddle 9, medium outlet 10, differential pressure transmitter 11, guide rail 12, etc., of which:

A medium inlet 1 and a head 4 are set at one end of the cylinder body 5 of the new horizontal filter desander equipment, a quick-opening blind plate 8 is set at the other end of the shell, a medium outlet 10 is set downward in the middle of the shell, and a sealed connection is set inside the shell The device 3 and the guide rail 12 are used for the installation, positioning and disassembly of the reverse-wound stainless steel screen pipe 7. The upper part of the shell is provided with a manual vent 6, the upper part of the medium inlet 1 is provided with a differential pressure transmitter 2, and the medium outlet 10 is provided with a differential pressure transmitter. Device 11, set saddle 9 for equipment support.

The medium enters the horizontal desander from the medium inlet 1, and enters the reverse-wound stainless steel screen 7 through the medium inlet 1. A flexible sealing connection device is set between the medium inlet 1 and the screen 7 to ensure good sealing and detachability. The medium is filtered out from the reverse-wound welded stainless steel screen tube 7, and the precision of the reverse-wound welded stainless steel screen tube 7 is not less than 0.10mm, which ensures the filtration accuracy. The gravel remains in the reverse-wound stainless steel screen pipe 7, and the filtered medium and liquid flow out from the reverse-wound stainless steel screen pipe 7, and then flow out from the medium outlet 10. When the normal sand discharge operation is completed, after the pressure relief through the manual vent 6 is completed, the quick-opening blind plate 8 is opened, and the reverse-wound welding stainless steel screen pipe 7 is disassembled to complete the sand discharge. When there is an abnormal working condition or the equipment needs to be inspected, the quick-opening blind plate 8 is also opened, and the reverse-wound stainless steel screen pipe 7 is disassembled, otherwise the installation of the screen pipe 7 is realized.

Between the reverse-wound stainless steel screen tube 7 and the quick-opening blind plate 8, there is a pressing device to ensure that after the quick-opening blind plate is closed, the screen tube can be tightly pressed to the sealing connection device to ensure sealing. The screen tube is also equipped with a handle for convenience. Disassemble.

The working principle of the utility model is: the shale gas containing sand and water enters the middle of the reverse-wound stainless steel screen pipe of the horizontal desander along the medium inlet direction for filtration, and the filtered shale gas and water flow into the reverse-wound stainless steel screen. The outside of the screen tube flows out from the direction of the medium outlet. After the pressure relief of the equipment is completed, open the quick-opening blind plate to complete the sand discharge.

Compared with the existing horizontal desander, the new horizontal filter desander avoids the clogging of the screen due to liquid, ensures the accuracy and flow area of the screen, reduces the frequency of sand discharge, and improves the efficiency of equipment use .

Compared with the slotted screen tube of the existing horizontal desander, the new horizontal filter desander adopts reverse-wound welded stainless steel screen tube, and the sand removal accuracy is improved to 0.10mm.

Compared with the existing horizontal desander which pollutes the environment and has high labor intensity when discharging sand, the new horizontal filter desander is convenient for sand discharge and has low labor intensity.

Compared with the slotted screen of the existing horizontal desander, which is easily damaged, the rigidity of the screen is improved to ensure that it is not easily damaged.

Claims (9)

1. A new type of horizontal filter desander, characterized in that: it includes a horizontal cylinder and a reverse-wound stainless steel screen installed in the horizontal cylinder, and the medium inlet and fast Open the blind plate, and set the medium outlet downward in the middle of the horizontal cylinder. 2. A novel horizontal filter desander according to claim 1, characterized in that: a flexible sealing connection device is provided between the medium inlet and the reverse-wound stainless steel screen pipe. 3. A new type of horizontal filter desander according to claim 1, characterized in that: a support guide rail is provided between the back-wound welded stainless steel screen pipe and the horizontal cylinder body. 4. A novel horizontal filter desander according to claim 1, characterized in that: a compression device is provided between the reverse-wound stainless steel screen pipe and the quick-opening blind plate. 5. A novel horizontal filter desander according to claim 1, characterized in that: a handle is provided on the reverse-wound stainless steel screen pipe. 6. A novel horizontal filter desander according to claim 1, characterized in that differential pressure transmitters are installed at the medium inlet and medium outlet respectively. 7. A novel horizontal filter desander according to claim 1, characterized in that: a vent is provided on the upper part of the horizontal cylinder. 8. A novel horizontal filter desander according to claim 1, characterized in that: a saddle is provided at the lower part of the horizontal cylinder. 9. A novel horizontal filter desander according to claim 1, characterized in that: the precision of the back-wound welded stainless steel screen is 0.10 mm.