Anti-blocking reversing valve for petroleum drilling

Abstract

The utility model discloses an anti-blocking reversing valve for petroleum drilling. An anti-blocking reversing valve for petroleum drilling comprises a valve body, a feeding channel, a first discharging channel, a second discharging channel, a backflushing channel and a slag discharging channel are arranged on the valve body, a material distributing mechanism is arranged in the valve body, a filter screen is obliquely installed in the valve body and arranged at the intersection of the slag discharging channel and the feeding channel, and the filter screen is arranged in the valve body. A first sealing plug is mounted on the backflushing channel; and a second sealing plug is mounted on the deslagging channel. According to the anti-blocking reversing valve for petroleum drilling, the feeding channel, the first discharging channel, the second discharging channel, the backflushing channel and the slag discharging channel are arranged on the valve body, and the filter screen is obliquely installed at the junction of the slag discharging channel and the feeding channel, so that the frequency of cleaning the filter screen can be reduced, and the service life of the filter screen is prolonged. And under the condition that the reversing valve is not disassembled, the filter screen can be conveniently cleaned, and use is more convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field especially relates to a petroleum drilling anti -blocking reversing valve. BACKGROUND

[0002] The petroleum equipment valve is a device for being installed on the petroleum transmission pipeline to control the opening and closing of the pipeline, which has been widely used in the field of petroleum transmission.

[0003] The existing announcement No. CN218000499U file discloses a kind of petroleum machinery anti -blocking reversing valve, including valve body, valve stem and filter structure;The valve body top end is provided with valve cover, valve cover is detachably connected with valve body, main channel is provided in valve body, inlet channel is communicated with the side of valve body top plate, inlet channel is communicated with main channel, filter structure is provided in inlet channel, first channel and second channel are symmetrically provided in the bottom end of valve body interior, first channel and second channel are separated by partition block, first channel end surface is communicated with main channel by first through hole, second channel end surface is communicated with main channel by second through hole, set backflush channel, not only can clean inside valve body, but also backflush filter cartridge, so as to flush out the solid and impurity retained in filter cartridge interior into feed pipe, and filter hole blocked on filter cartridge surface can be cleaned, so as to reach the effect of anti -blocking.

[0004] But the reversing valve of this structure, when backflushing, inlet channel needs to be disconnected, and the disconnection operation of petroleum pipeline is relatively troublesome, needs to consume a lot of time, and then use is not simple enough.

[0005] Therefore, it is necessary to provide a kind of petroleum drilling anti -blocking reversing valve to solve the above technical problems. UTILITY MODEL CONTENT

[0006] In view of the above situation, in order to overcome the defects of prior art, the utility model provides a kind of petroleum drilling anti -blocking reversing valve, which can be cleaned without disassembling the reversing valve, and is more convenient to use.

[0007] To achieve the above object, the technical scheme adopted by the utility model is as follows:

[0008] The petroleum drilling anti -blocking reversing valve comprises: a valve body, a feed channel, a first discharge channel, a second discharge channel, a backflush channel and a slag discharge channel are provided on the valve body, a distribution mechanism is provided in the valve body, a filter screen is installed obliquely in the valve body, the filter screen is arranged at the intersection of the slag discharge channel and the feed channel, a first sealing plug is installed on the backflush channel, and a second sealing plug is installed on the slag discharge channel.

[0009] Preferably, an observation window is installed on the side wall of the residue discharging channel.

[0010] Preferably, a one-way valve is installed in the feeding channel.

[0011] Preferably, the distributing mechanism comprises a rotating shaft installed in the valve body, one end of the rotating shaft extends out of the valve body, and a distributing plate is installed on the rotating shaft, and a discharging hole is formed in the distributing plate.

[0012] Preferably, a center hole is formed in the center of the distributing plate, and the rotating shaft passes through the center hole and is fixedly connected with the rotating shaft.

[0013] Preferably, a sealing ring is installed at one end of the first discharging channel and the second discharging channel.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] (1) the utility model discloses a feeding channel, a first discharging channel, a second discharging channel, a backflushing channel and a residue discharging channel are arranged on the valve body, and a filter screen is obliquely installed at the intersection of the residue discharging channel and the feeding channel, which can reduce the frequency of cleaning the filter screen, and the filter screen can be conveniently cleaned without disassembling the reversing valve, and the utility model is more convenient to use.

[0016] (2) the utility model discloses an observation window is installed on the side wall of the residue discharging channel, and the congestion of the residue discharging channel can be conveniently mastered.

[0017] (3) the utility model discloses a one-way valve is installed in the feeding channel, which can prevent clean water or cleaning liquid from mixing into the petroleum pipeline.

[0018] (4) the utility model discloses a distributing mechanism comprising a rotating shaft and a distributing plate, and a discharging hole is formed in the distributing plate, which can conveniently control the on-off of the first discharging channel and the second discharging channel.

[0019] (5) the utility model discloses a sealing ring is installed at one end of the first discharging channel and the second discharging channel, which can conveniently seal the gap between the first discharging channel, the second discharging channel and the distributing plate. DRAWINGS

[0020] Figure 1 It is a partial sectional structure schematic view of the petroleum drilling anti-blocking reversing valve provided by the utility model.

[0021] Figure 2 It is Figure 1 It is an enlarged structure schematic view of part A.

[0022] Figure 3 It is Figure 1The structure diagram of the distribution plate in the petroleum drilling anti-blocking reversing valve is shown.

[0023] Wherein, the name corresponding to the reference sign is: 1-valve body, 2-feed channel, 3-first discharge channel, 4-second discharge channel, 5-back flushing channel, 6-discharge channel, 7-rotary shaft, 8-distribution plate, 9-filter screen, 10-viewing window, 11-one-way valve, 12-first sealing plug, 13-second sealing plug, 14-center hole, 15-discharge hole, 16-sealing ring. DETAILED DESCRIPTION

[0024] The utility model will be further explained in combination with the drawings and examples, and the mode of the utility model includes but is not limited to the following examples.

[0025] Example 1:

[0026] As Figures 1-3As shown, the oil drilling anti-clogging reversing valve provided by this utility model includes: a valve body 1, on which are provided a feed channel 2, a first discharge channel 3, a second discharge channel 4, a backflushing channel 5, and a slag discharge channel 6. A material distribution mechanism is provided inside the valve body 1, which can control the oil inside the pipeline to be discharged from the first discharge channel 3 or the second discharge channel 4. Its structure can adopt the structure of an existing three-way valve or the mechanism disclosed in CN218000499U, which will not be described in detail here. A filter screen 9 is installed obliquely inside the valve body 1. The filter screen 9 is located at the intersection of the slag discharge channel 6 and the feed channel 2. A first discharge channel 3, a second discharge channel 4, a backflushing channel 5, and a slag discharge channel 6 are installed on the backflushing channel 5. A sealing plug 12 is installed on the slag discharge channel 6, and a second sealing plug 13 is installed on the slag discharge channel 6. In use, the valve body 1 is installed on the oil delivery pipeline of the oil drilling operation, with the slag discharge channel 6 facing downwards or to the side. Oil enters the valve body 1 from the feed channel 2, and the filter screen 9 filters impurities in the oil. Then, the oil is discharged from the first discharge channel 3 or the second discharge channel 4 through the distribution mechanism. Because the slag discharge channel 6 is inclined and faces downwards or to the side, some impurities will enter the slag discharge channel 6 along the inclined filter screen 9 and accumulate there, thus slowing down the clogging of the filter screen 9. The reduced plugging speed helps decrease the frequency of cleaning the filter screen 9. During cleaning, one method involves removing the second sealing plug 13 and closing the oil outlet channels on the first and second discharge channels 3 and 4. The oil in the feed channel 2 will push the impurities in the slag discharge channel 6 out. A container can be used to collect the discharged oil and impurities. Finally, the slag discharge channel 6 is sealed. Under the flushing effect of the oil, some of the debris on the filter screen 9 will also be washed away. Although this cleaning method cannot completely remove all the debris from the filter screen 9, it eliminates the need for rinsing with cleaning water or cleaning solution, preventing additional moisture buildup in the oil inside the valve body 1. The first method involves removing the first sealing plug 12 and the second sealing plug 13, and closing the oil outlet channels on the feed channel 2, the first discharge channel 3, and the second discharge channel 4. High-pressure cleaning water or cleaning fluid is then introduced into the backwash channel 5 to backwash the filter screen 9. The backwashed debris is discharged through the slag discharge channel 6. The discharged mixture is collected in a container. After backwashing the filter screen 9, the backwash channel 5 is sealed. Using the first method, the filter screen 9 is flushed for a certain period until the oil discharged from the slag discharge channel has a normal color, generally requiring 5-10 seconds. Then the slag discharge channel 6 is sealed, and normal operation can resume. Neither of these methods requires disconnecting the reversing valve from the oil pipeline, making it more convenient to use. It is worth noting that the normal use of the filter screen 9 after cleaning can prevent clogging of the reversing valve.

[0027] By setting a feed channel 2, a first discharge channel 3, a second discharge channel 4, a backflushing channel 5, and a slag discharge channel 6 on the valve body 1, and installing a filter screen 9 at an angle at the intersection of the slag discharge channel 6 and the feed channel 2, it is possible to reduce the frequency of cleaning the filter screen 9, and to conveniently clean the filter screen without disassembling the reversing valve, making it more convenient to use.

[0028] Example 2:

[0029] like Figure 2 As shown, an observation window 10 is installed on the side wall of the slag discharge channel 6. The observation window 10 can be made of high-strength glass. The degree of debris accumulation in the slag discharge channel 6 can be observed through the observation window 10 so that cleaning operations can be carried out in a timely manner.

[0030] By installing an observation window 10 on the side wall of the slag discharge channel 6, it is easy to monitor the congestion of the slag discharge channel 6.

[0031] Example 3:

[0032] like Figure 3 As shown, a one-way valve 11 is installed in the feed channel 2. The one-way valve 11 is installed close to the filter screen 9. When in use, the oil can flow normally through the one-way valve 11 to the filter screen 9. During backwashing, the cleaning water or cleaning fluid cannot flow through the one-way valve 11 to the port of the feed channel 2, which plays a role in preventing backflow and preventing the cleaning water or cleaning fluid from mixing into the oil pipeline.

[0033] By installing a one-way valve 11 in the feed channel 2, a backflow prevention function can be achieved to prevent cleaning water or cleaning fluid from entering the oil pipeline.

[0034] Example 4:

[0035] like Figure 1As shown, in this embodiment, the material distribution mechanism includes a rotating shaft 7 installed inside the valve body 1. One end of the rotating shaft 7 extends out of the valve body 1, and the external end of the rotating shaft 7 can be connected to a power source, such as a motor, etc., or a handle can be installed for manual operation, which will not be described in detail here. A material distribution plate 8 is installed on the rotating shaft 7, and a discharge hole 15 with the same inner diameter as the feed channel 2 is opened on the material distribution plate 8. In use, the rotating shaft 7 is rotated by external force, causing the material distribution plate 8 to rotate. When the discharge hole 15 is aligned with the feed inlet of the first discharge channel 3 or the second discharge channel 4, the oil is discharged from the discharge hole 15 into the first discharge channel 3 or the second discharge channel 4. When the material distribution plate 8 rotates... When the discharge hole 15 is not aligned with either the first discharge channel 3 or the second discharge channel 4, the oil in the valve body 1 cannot be discharged through either the first discharge channel 3 or the second discharge channel 4. It is worth noting that when the discharge hole 15 is aligned with the first discharge channel 3, if it is rotated 90 degrees, the discharge hole 15 will not be aligned with either the first discharge channel 3 or the second discharge channel 4. If it is rotated 90 degrees again, the discharge hole 15 will be aligned with the second discharge channel 4. If it is rotated 90 degrees again, the discharge hole 15 will not be aligned with either the first discharge channel 3 or the second discharge channel 4. If it is rotated 90 degrees again, the discharge hole 15 will be aligned with the first discharge channel 3. This process is repeated, and of course, it can also be done in the opposite direction.

[0036] By setting up a material distribution mechanism including a rotating shaft 7 and a material distribution plate 8, and opening a discharge hole 15 on the material distribution plate 8, the opening and closing of the first discharge channel 3 and the second discharge channel 4 can be easily controlled.

[0037] Example 5:

[0038] like Figure 3 As shown, a central hole 14 is opened in the center of the material distribution plate 8, and the rotating shaft 7 passes through the central hole 14 and is fixedly connected to the rotating shaft 7. A sealing ring 16 is installed at the end of the first discharge channel 3 and the second discharge channel 4 near the material distribution plate 8. The sealing ring 16 is embedded in the valve body 1 installed below the material distribution plate 8, and the gap between the first discharge channel 3, the second discharge channel 4 and the material distribution plate 8 is sealed by the sealing ring 16.

[0039] By installing sealing rings 16 at one end of the first discharge channel 3 and the second discharge channel 4, the gaps between the first discharge channel 3, the second discharge channel 4 and the distribution plate 8 can be easily sealed.

[0040] Working principle: when the filter screen 9 needs to be cleaned, in the first way, the second sealing plug 13 is removed, and the oil outlet channels on the first discharge channel 3 and the second discharge channel 4 are closed, the petroleum in the feed channel 2 will push the impurities in the deslagging channel 6 out, a container can be used to hold the discharged petroleum and impurities, and finally the deslagging channel 6 is sealed, under the flushing of petroleum, the impurities on the filter screen 9 will also be partially washed away, in this cleaning way, although the impurities on the filter screen 9 cannot be completely cleaned, but without using clean water or cleaning liquid to flush, the water content of the petroleum in the valve body 1 will not be additionally increased.

[0041] In the second way, the first sealing plug 12 and the second sealing plug 13 are removed, and the oil outlet channels on the feed channel 2, the first discharge channel 3 and the second discharge channel 4 are closed, high-pressure clean water or cleaning liquid is introduced into the backflushing channel 5 to backflush the filter screen 9, the backflushed impurities are discharged from the deslagging channel 6, a container is used to hold the discharged mixture, after backflushing the filter screen 9, the backflushing channel 5 is sealed, the first way is used to flush the filter screen 9 for a certain period of time until the petroleum discharged from the deslagging channel is normal, generally 5-10 seconds, then the deslagging channel 6 is sealed, and then normal operation can be carried out. In this operation mode, part of the clean water or cleaning liquid will remain in the valve body 1.

[0042] In the above two working ways, the reversing valve does not need to be disconnected from the petroleum pipeline, so it is more convenient to use.

[0043] And because the deslagging channel 6 is inclined, and the deslagging channel 6 is installed downward or sideward downward, part of the impurities will enter the deslagging channel 6 along the inclined filter screen 9 and accumulate in the deslagging channel 6, thereby slowing down the clogging speed of the filter screen 9, which is conducive to reducing the frequency of cleaning the filter screen 9.

Claims

1. An anti-jamming reversing valve for oil drilling, characterized in that, Include: Valve body (1), the valve body (1) is provided with feed channel (2), first discharge channel (3), second discharge channel (4), backflush channel (5) and discharge channel (6), the valve body (1) is provided with distribution mechanism, the valve body (1) is provided with filter screen (9) in the oblique installation, the filter screen (9) is located at the intersection of the discharge channel (6) and the feed channel (2), the backflush channel (5) is provided with first sealing plug (12), the discharge channel (6) is provided with second sealing plug (13).

2. A non-jamming reversing valve for oil drilling as claimed in claim 1, wherein, The side wall of the discharge channel (6) is provided with observation window (10).

3. The anti-jamming reversing valve for oil drilling according to claim 1, characterized in that, The feed channel (2) is provided with check valve (11).

4. The anti-jamming reversing valve for oil drilling according to claim 1, characterized in that, The distribution mechanism includes rotating shaft (7) installed in the valve body (1), one end of the rotating shaft (7) extends out of the valve body (1), the rotating shaft (7) is provided with distribution plate (8), the distribution plate (8) is provided with discharge hole (15).

5. A non-jamming reversing valve for oil drilling as claimed in claim 4, wherein, The center of the distribution plate (8) is provided with center hole (14), the rotating shaft (7) passes through the center hole (14) and is fixedly connected with the rotating shaft (7).

6. A non-jamming reversing valve for oil drilling as defined in claim 1, wherein The first discharge channel (3), the second discharge channel (4) is provided with sealing ring (16) at one end.

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