CN204186365U - A kind of sealing system of adjustable concentric roater regulator - Google Patents

Abstract

The utility model discloses a sealing system of an adjustable concentric water distributor, which comprises: an upper joint, a connecting sleeve connected at one end to the upper joint, an intermediate joint connected at one end to the other end of the connecting sleeve, and a connecting sleeve connected to the other end of the intermediate joint. The lower joint, the positioning shaft located in the connecting sleeve and internally connected with the upper joint, the driving shaft connected with the positioning shaft and partially located in the middle joint, the positioning seat fixedly connected with the driving shaft and located in the middle joint, and the driving shaft and Several drive seals between intermediate joints. The driving sealing ring of the utility model makes the rotation torque smaller when the tool is adjusted, and mechanical impurities cannot enter the adjusting driving mechanism, thereby improving the life performance of the adjusting driving mechanism.

Description

A Sealing System of Adjustable Concentric Water Distributor

technical field

The utility model discloses a sealing system of an adjustable concentric water distributor.

Background technique

With the deepening of oilfield development, the oilfield water injection process is gradually updated, and the status of synchronous measurement and adjustment technology in oilfield water injection work is constantly improving. The matching concentric water distributor will gradually replace the existing eccentric water distributor. However, the current conventional The processing design scheme of the concentric water distributor generally has the following defects:

1. The unreasonable design of the sealing ring on the body reduces the overall tensile strength of the concentric water distributor;

2. The unreasonable design of the sealing ring of the adjustment drive mechanism causes too much rotational torque during adjustment or mechanical impurities enter the drive mechanism and block the drive mechanism;

3. The design of the auxiliary sealing ring is unreasonable, and there is a hidden danger of pressure leakage in the concentric water distributor;

4. The fixed faucet may be broken due to the imbalance of internal and external pressure, and its strength is tested.

Utility model content

In order to solve the above problems, the utility model discloses a sealing system of an adjustable concentric water distributor, which can effectively improve the overall tensile strength of the concentric water distributor, reduce the driving friction during adjustment, and prevent the liquid in the tool from being fixed. The nozzle leaks to the casing, which is especially suitable for the processing and manufacturing of concentric water distributors in oil fields.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a sealing system of an adjustable concentric water distributor, which includes: an upper joint, a connecting sleeve connected at one end to the upper joint, and an intermediate joint connected at one end to the other end of the connecting sleeve , the lower joint connected to the other end of the intermediate joint, the positioning shaft located in the connecting sleeve and internally connected with the upper joint, the drive shaft connected to the positioning shaft and partially located in the intermediate joint, the fixedly connected drive shaft and located in the intermediate joint The positioning seat, and several driving sealing rings located between the driving shaft and the intermediate joint.

On the basis of the above-mentioned technical solutions, the following subsidiary technical solutions are further included:

It further includes main sealing rings respectively located between the upper joint and the connection sleeve, between the connection sleeve and the middle joint, and between the middle joint and the lower joint.

It further includes a movable faucet arranged radially between the drive shaft and the intermediate joint, a fixed faucet radially disposed between the movable faucet and the intermediate joint, and a fixed faucet arranged radially between the drive shaft and the intermediate joint and connected to the fixed faucet. The sealing seat that the faucet is in contact with, wherein a driving sealing ring is arranged between the sealing seat, the movable faucet and the fixed faucet, and a driving seal is also arranged between the movable faucet, the fixed faucet and the positioning seat. lock up.

The driving sealing ring is a polytetrafluoro sealing ring with an M-shaped cross section.

The driving sealing ring, the driving shaft and the intermediate joint enclose a closed space, and the temperature-resistant lubricating grease is pre-installed in the space.

It further includes auxiliary sealing rings which are respectively located between the intermediate joint and the sealing seat, between the fixed faucet and the intermediate joint, and between the positioning seat and the intermediate joint, and are interference fit and sealed.

The utility model has the advantages of:

The utility model has the following advantages compared with the prior art:

1. The main sealing ring on the body is designed on the side close to the inner cavity of the tool. The pressure at the connection thread of the body is balanced, and the thread strength is high, which improves the overall tensile strength of the concentric water distributor when it bears high internal pressure;

2. The optimization of the sealing ring of the adjustment drive mechanism makes the rotation torque smaller when the tool is adjusted, and mechanical impurities cannot enter the adjustment drive mechanism, which improves the life performance of the adjustment drive mechanism;

3. The design of the auxiliary sealing ring is reasonable, so that the concentric water distributor avoids the leakage of internal pressure, and the same cylindrical surface is used as the sealing pressure bearing surface, which makes it easier to control the coaxiality of related accessories and reduce the difficulty of processing and assembly;

4. When the fixed faucet is opened or closed, the internal and external pressures are basically balanced and not easily broken, and its strength is easily guaranteed.

Description of drawings

Below in conjunction with accompanying drawing, the utility model will be further described:

Fig. 1 is a cross-sectional view of the utility model when it is in a closed state and bears high internal pressure;

Figure 2 is a cross-sectional view of the utility model when it is in an open state;

Detailed ways

As shown in Figure 1-2, the utility model provides a sealing system for an adjustable concentric water distributor, which includes: an upper joint 1, a connecting sleeve 2 connected to the upper joint 1 at one end, and connected to the other end of the connecting sleeve 2 at one end The intermediate joint 5, the lower joint 13 connected to the other end of the intermediate joint 5, the positioning shaft 3 located in the connecting sleeve 2 and connected to the upper joint 1, the drive shaft 4 connected to the positioning shaft 3 and partly located in the intermediate joint 5 , a positioning seat 10 fixedly connected to the drive shaft 4 and located in the intermediate joint 5, several driving sealing rings 15 located between the drive shaft 4 and the intermediate joint 5, radially arranged between the drive shaft 4 and the intermediate joint 5 The movable nozzle 8, the fixed nozzle 9 radially located between the movable nozzle 8 and the intermediate joint 5, and the sealing seat radially arranged between the drive shaft 4 and the intermediate joint 5 and in contact with the fixed nozzle 9 7. There is a driving sealing ring 15 between the sealing seat 7, the movable nozzle 8 and the fixed nozzle 9, and a driving seal is also arranged between the movable nozzle 8, the fixed nozzle 9 and the positioning seat 10. Circle 15. The driving sealing ring 15 is a polytetrafluoro sealing ring with an M-shaped cross section.

Preferably, it further includes main sealing rings 14 respectively located between the upper joint 1 and the connecting sleeve 2 , between the connecting sleeve 2 and the intermediate joint 5 , and between the intermediate joint 5 and the lower joint 13 . For the main sealing ring 14, when the concentric water device bears high internal pressure, since the main sealing ring 14 is located between the connecting thread and the inner cavity, the high-pressure liquid in the concentric water distributor first acts on the main sealing ring 14 and is absorbed Sealing may only produce slight deformation at the main sealing ring 14, and the wall thickness of the outer cylinder at the main sealing ring 14 basically does not affect the overall tensile strength. The connecting thread is located downstream of the main sealing ring 14, and directly communicates with the casing annulus. The internal and external pressure is balanced, and the main sealing ring is under pressure upstream. It is not affected by the high pressure in the concentric water distributor and will not be deformed. Its connection strength is close to Raw tensile strength. Thus the whole concentric water distributor can be improved. However, the main sealing ring of the conventional water distributor is arranged downstream of the connecting thread. When the tool bears internal pressure, the high-pressure liquid directly acts on the connecting thread, which easily causes the female thread to expand and deform, reducing the thread connection strength.

Preferably, the driving sealing ring 15, the driving shaft 4 and the intermediate joint 5 enclose a closed space, and the space is pre-installed with temperature-resistant lubricating grease. The driving sealing ring 15 is responsible for the sealing between the driving shaft 4 and the intermediate joint 5, the movable nozzle 8 and the sealing seat 7, the movable nozzle 8 and the positioning seat 10, and the three sealing rings are made of high hardness, low friction resistance, high resistance The compressed PTFE sealing ring effectively reduces the additional friction caused by the sealing ring.

Preferably, it further includes auxiliary sealing rings 16 which are respectively located between the intermediate joint 5 and the sealing seat 7 , between the fixed nozzle 9 and the intermediate joint 5 , and between the positioning seat 10 and the intermediate joint 5 and are interference fit and sealed.

Preferably, it further includes a pressure ring 6 arranged between the connection sleeve 2 , the intermediate joint 5 and the drive shaft 4 , and a driving sealing ring 15 is also provided between the pressure ring 6 , the drive shaft 4 and the intermediate joint 5 . The positioning seat 10 is provided with a positioning pin 1 and a limiting ring 12 .

For the driving mechanism, the upper two drive sealing rings 15 and the upper auxiliary sealing ring 16 seal the adjustment thread on the drive shaft 4 and the matched female adjustment thread, even if the drive shaft 4 is fully open, the drive seal ring 15, The volume of the space surrounded by the drive shaft 4 and the intermediate joint 5 remains the same and is still closed. As shown in Figure 2, the adjustment thread is always immersed in the temperature-resistant grease, and its adjustment friction will not increase. When the movable water nozzle 8 When disengaged from the bottom drive seal, its adjustment friction also decreases slightly. However, the space of the conventional water distributor is open to the outside during normal water injection, and the injection liquid directly soaks the adjusting thread, which is easy to cause corrosion and scaling of the adjusting thread, and increase the rotational friction of the adjusting thread.

For the auxiliary sealing ring 16, all the sealing surfaces are on the inner cylindrical surface of the intermediate joint 5, and the interference fit seal is carried out, so as long as the positioning seat 10, the movable water nozzle 8, and the fixed water nozzle 9 themselves are ensured The coaxiality of the inner and outer circles, the coaxiality of the entire deployment mechanism is very easy to ensure, and the positioning seat 10, the movable nozzle 8, and the fixed nozzle 9 are small, and the coaxiality is easy to ensure, so the coaxiality of the entire deployment mechanism The precision is easy to ensure, thereby reducing the difficulty of processing and assembling the positioning seat 10, the movable nozzle 8, and the fixed nozzle 9, and can further reduce the matching clearance between the movable nozzle 8 and the fixed nozzle 9, and improve the deployment accuracy.

The driving sealing ring 15, the driving shaft 4, and the intermediate joint 5 form a closed space, and the temperature-resistant grease is pre-installed in this space when the tool is assembled. Due to the special position design of the driving sealing ring 15 and its high resistance Pressure characteristics, so that no matter how the drive shaft 4 changes its longitudinal position, the space is in a sealed and clean state, not affected by the pressure inside the tool, and the adjustment thread on the drive shaft 4 and the intermediate joint 5 is always in a good lubricated and clean environment , Effectively prevent the friction of the adjustment thread from rising.

The auxiliary sealing ring 16 is responsible for sealing between the intermediate joint 5 and the sealing seat 7, the fixed faucet 9 and the intermediate joint 5, and the positioning seat 10 and the intermediate joint 5. Since the fixed faucet 9 has two driving sealing rings 15, There are auxiliary sealing rings 16 between the intermediate joint 5 and the sealing seat 7 and between the positioning seat 10 and the intermediate joint 5, so that the internal and external pressure of the fixed faucet 9 is basically balanced under any conditions, and will not be broken due to the pressure difference between the internal and external of the tool. crack.

Of course, the above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present utility model, and its purpose is to allow people familiar with this technology to understand the content of the present invention and implement it accordingly, and cannot limit the protection scope of the present utility model with this. All equivalent transformations or modifications made according to the spirit of the main technical solutions of the utility model shall fall within the protection scope of the utility model. The basic structure and principle of the concentric water distributor belong to the known technology and are not within the scope of protection of this patent, so they will not be repeated here.

Claims (6)

1. the sealing system of an adjustable concentric roater regulator, it is characterized in that it comprises: top connection (1), the adapter sleeve (2) that one end is connected with top connection (1), the transition joint (5) that one end is connected with adapter sleeve (2) other end, the lower contact (13) be connected with transition joint (5) other end, be positioned at adapter sleeve (2) and the locating shaft (3) be connected with top connection (1) inside, to be connected with locating shaft (3) and part is positioned at the driving shaft (4) of transition joint (5), be fixedly connected with driving shaft (4) and be positioned at the positioning seat (10) of transition joint (5), and several drivings sealing ring (15) be positioned between driving shaft (4) and transition joint (5).

2. the sealing system of a kind of adjustable concentric roater regulator according to claim 1, it is characterized in that: it comprises radial direction further and is arranged on movable water nozzle (8) between driving shaft (4) and transition joint (5), radial direction is positioned at the fixing water nozzle (9) between movable water nozzle (8) and transition joint (5), and radial direction to be arranged between driving shaft (4) and transition joint (5) and with the seal receptacle (7) of fixing water nozzle (9) abutting contact, wherein seal receptacle (7), movable water nozzle (8), be provided with between fixing water nozzle (9) three and drive sealing ring (15), and movable water nozzle (8), fixing water nozzle (9), also be provided with between positioning seat (10) three and drive sealing ring (15).

3. the sealing system of a kind of adjustable concentric roater regulator according to claim 2, is characterized in that: it comprises the primary seal circle (14) laid respectively between top connection (1) and adapter sleeve (2), between adapter sleeve (2) and transition joint (5), between transition joint (5) and lower contact (13) further.

4. the sealing system of a kind of adjustable concentric roater regulator according to claim 3, is characterized in that: described driving sealing ring (15) is polytetrafluoro sealing ring, and cross section is M type.

5. the sealing system of a kind of adjustable concentric roater regulator according to claim 4, it is characterized in that: described driving sealing ring (15), driving shaft (4), transition joint (5) define a space closed, and be preinstalled with temperature-resistant grease in this space.

6. the sealing system of a kind of adjustable concentric roater regulator according to Claims 2 or 3 or 4 or 5, is characterized in that: its comprise further to lay respectively between transition joint (5) and seal receptacle (7), fixing between water nozzle (9) and transition joint (5), between positioning seat (10) and transition joint (5) and the auxiliary seal ring of interference fit seal (16).