阅读说明：本技术 一种新型可截止直通式笼套节流阀 (Novel cut-off straight-through type cage sleeve throttle valve ) 是由 张立勇 刘旭 陈浩 于 2020-08-20 设计创作，主要内容包括：本发明公开了一种新型可截止直通式笼套节流阀,包括阀体、阀芯、阀盖、阀座、阀杆、轮杆及手轮；所述阀体顶部设有容置腔,阀体的两侧设有介质进道与介质出道,容置腔的底部设有第一盲孔,且介质进道与第一盲孔相通；所述阀芯设于容置腔底部,阀芯上设有若干个节流孔；所述阀座设于阀芯的上方并设有密封件B,阀盖设于阀体的顶部并压紧阀座与阀芯；所述阀杆螺纹配合于轮杆,且阀杆滑动连接于阀盖上的通孔内壁；所述轮杆转动带动阀杆上下移动,当阀杆底端挤压密封件B时,介质进道与介质出道不相通。本发明实现笼套节流阀可以截止的功能,节约了成本,同时减轻了作业人员劳动强度,提高了工作效率和经济效益。(The invention discloses a novel cut-off straight-through type cage sleeve throttle valve which comprises a valve body, a valve core, a valve cover, a valve seat, a valve rod, a wheel rod and a hand wheel, wherein the valve body is provided with a valve core and a valve cover; the top of the valve body is provided with an accommodating cavity, two sides of the valve body are provided with a medium inlet channel and a medium outlet channel, the bottom of the accommodating cavity is provided with a first blind hole, and the medium inlet channel is communicated with the first blind hole; the valve core is arranged at the bottom of the accommodating cavity and is provided with a plurality of throttling holes; the valve seat is arranged above the valve core and is provided with a sealing element B, and the valve cover is arranged at the top of the valve body and tightly presses the valve seat and the valve core; the valve rod is in threaded fit with the wheel rod and is connected to the inner wall of the through hole in the valve cover in a sliding manner; the wheel rod rotates to drive the valve rod to move up and down, and when the bottom end of the valve rod extrudes the sealing element B, the medium inlet channel is not communicated with the medium outlet channel. The invention realizes the function that the cage sleeve throttle valve can be cut off, saves the cost, lightens the labor intensity of operating personnel and improves the working efficiency and the economic benefit.)

1. The utility model provides a novel can cut off straight-through cage cover throttle valve which characterized in that: comprises a valve body (1), a valve core (30), a valve cover (2), a valve seat (3), a valve rod (4), a wheel rod (5) and a hand wheel (6); the top of the valve body (1) is provided with an accommodating cavity (7), two sides of the valve body (1) are provided with a medium inlet channel (8) and a medium outlet channel (9), the bottom of the accommodating cavity (7) is provided with a first blind hole (10), and the medium inlet channel (8) is communicated with the first blind hole (10); the valve core (30) is arranged at the bottom of the accommodating cavity (7), a plurality of throttling holes (11) are formed in the valve core (30), and a sealing element A (12) is arranged between the valve core (30) and the valve body (1); the valve seat (3) is arranged above the valve core (30) and provided with a sealing element B (13), the valve cover (2) is arranged at the top of the valve body (1) and presses the valve seat (3) and the valve core (30), and the top of the valve cover (2) is provided with a valve cap (14); the hand wheel (6) is provided with the top end of a wheel rod (5), and the wheel rod (5) is rotatably connected to the valve cap (14); the valve rod (4) is in threaded fit with the wheel rod (5), the valve rod (4) is connected to the inner wall of the through hole in the valve cover (2) in a sliding mode, a second blind hole (15) is formed in the bottom end of the valve rod (4), and the second blind hole (15) is connected to the outer wall of the valve core (30) in a sliding mode; the wheel rod (5) rotates to drive the valve rod (4) to move up and down, and when the bottom end of the valve rod (4) extrudes the sealing element B (13), the medium inlet channel (8) is not communicated with the medium outlet channel (9).

2. The novel cut-off straight-through cage sleeve throttle valve as claimed in claim 1, wherein: the outer wall on valve body (1) top is equipped with the external screw thread, and nut (16) screw-thread fit compresses tightly valve gap (2) on valve body (1) top, is equipped with sealing member C (17) between valve gap (2) outer wall and holding chamber (7) inner wall, and is equipped with sealing member D (18) between through-hole inner wall on valve gap (2) and valve rod (4) outer wall.

3. The novel cut-off straight-through cage sleeve throttle valve as claimed in claim 2, wherein: the outer wall of the wheel rod (5) is provided with a supporting block (19), the supporting block (19) is rotatably connected to the valve cap (14) through two thrust ball bearings (20), and a sealing element E (29) is arranged between the outer wall of the wheel rod (5) and the valve cap (14).

4. The novel cut-off straight-through cage sleeve throttle valve as claimed in claim 2, wherein: the bottom end of the accommodating cavity (7) is arranged in a step shape to form a higher ring surface (21) and a lower ring surface (22), the whole valve core (30) is in a T-shaped structure, and the bottom end of the valve core (30) is in contact with the lower ring surface (22); the bottom end of the valve seat (3) is contacted with the higher ring surface (21), and the lower surface of the annular stop block (23) is contacted with the upper surface of an annular bump (24) at the bottom end of the valve core (30); the upper portion of the annular stop block (23) is a sealing groove, the sealing element B (13) is placed in the sealing groove, and a sealing element F (25) is arranged between the outer wall of the valve seat (3) and the inner wall of the accommodating cavity (7).

5. The novel cut-off straight-through cage-sleeve throttle valve as claimed in claim 4, wherein: the inner wall interference fit of second blind hole (15) has alloy cover (26), and the inner wall sliding connection of alloy cover (26) is in the outer wall of case (30), and valve rod (4) and alloy cover (26) extrusion sealing member B (13), and the bottom slope setting of the part of alloy cover (26) bottom and valve rod (4) forms contained angle alpha.

6. The novel cut-off straight-through cage-sleeve throttle valve as claimed in claim 5, wherein: the sealing element B (13) is a rubber sealing ring with a rectangular cross section, and the top end of the valve seat (3) is obliquely arranged to form an included angle beta.

7. The novel cut-off straight-through cage sleeve throttle valve as claimed in claim 6, wherein: the value of the included angle beta is larger than that of the included angle alpha.

8. The novel cut-off straight-through cage-sleeve throttle valve as claimed in claim 4, wherein: the sealing element A (12) is a metal sealing gasket, and the sealing element C (17), the sealing element D (18), the sealing element E (29) and the sealing element F (25) are all O-shaped rubber sealing rings.

9. The novel cut-off straight-through cage-sleeve throttle valve as claimed in claim 4, wherein: a sheath (27) is arranged between the valve cover (2) and the valve seat (3); the top of disk seat (3) is equipped with the recess, and the top of sheath (27) is located the recess, and the top and valve gap (2) contact of sheath (27), and valve rod (4) sliding connection is in the inner wall of sheath (27), and is equipped with a plurality of medium circulation hole (28) on sheath (27).

10. The novel cut-off straight-through cage-sleeve throttle valve as claimed in claim 9, wherein: the medium circulation holes (28) are arranged on the sheath (27) in an annular array, the inner diameter of the medium circulation holes (28) is the same as that of the medium outlet channel (9), and the medium circulation holes (28) are flush with the inner opening of the medium outlet channel (9).

Technical Field

The invention relates to the technical field of petroleum machinery equipment, in particular to a novel cut-off straight-through type cage sleeve throttle valve.

Background

At present, in the actual production process of an oil field, the sealing performance of a valve seat of a cage sleeve throttling valve is poor, the valve seat is often unreliable when being used as a stop valve, and when the stop valve is required to be stopped, a gate valve must be added in front of the cage sleeve throttling valve, so that the production cost is increased in production, the labor intensity of operators is increased, and the problem that the valve seat is difficult to solve in the production process is solved all the time. Therefore, the cage sleeve throttling valve capable of being cut off is designed, cost can be saved in production, labor intensity of operators is reduced, and the problem needs to be solved by production and use units together.

Disclosure of Invention

The invention aims to provide a novel cut-off straight-through type cage sleeve throttle valve, which realizes the function of cutting off the cage sleeve throttle valve, saves the cost, lightens the labor intensity of operators, improves the working efficiency and the economic benefit and solves the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a novel cut-off straight-through type cage sleeve throttle valve comprises a valve body, a valve core, a valve cover, a valve seat, a valve rod, a wheel rod and a hand wheel; the top of the valve body is provided with an accommodating cavity, two sides of the valve body are provided with a medium inlet channel and a medium outlet channel, the bottom of the accommodating cavity is provided with a first blind hole, and the medium inlet channel is communicated with the first blind hole; the valve core is arranged at the bottom of the accommodating cavity, a plurality of throttling holes are formed in the valve core, and a sealing element A is arranged between the valve core and the valve body; the valve seat is arranged above the valve core and provided with a sealing element B, the valve cover is arranged at the top of the valve body and tightly presses the valve seat and the valve core, and the top of the valve cover is provided with a valve cap; the hand wheel is provided with the top end of a wheel rod, and the wheel rod is rotatably connected to the valve cap; the valve rod is in threaded fit with the wheel rod and is connected to the inner wall of the through hole in the valve cover in a sliding mode, a second blind hole is formed in the bottom end of the valve rod, and the second blind hole is connected to the outer wall of the valve core in a sliding mode; the wheel rod rotates to drive the valve rod to move up and down, and when the bottom end of the valve rod extrudes the sealing element B, the medium inlet channel is not communicated with the medium outlet channel.

The invention has the further improvement scheme that the outer wall of the top end of the valve body is provided with external threads, the nut is in threaded fit with the top end of the valve body and tightly presses the valve cover, a sealing element C is arranged between the outer wall of the valve cover and the inner wall of the accommodating cavity, and a sealing element D is arranged between the inner wall of the through hole in the valve cover and the outer wall of the valve rod.

The invention has the further improvement scheme that the outer wall of the wheel rod is provided with a supporting block, the supporting block is rotatably connected with the valve cap through two thrust ball bearings, and a sealing element E is arranged between the outer wall of the wheel rod and the valve cap.

The invention has the further improvement scheme that the bottom end of the accommodating cavity is arranged in a step shape to form a higher ring surface and a lower ring surface, the whole valve core is in a T-shaped structure, and the bottom end of the valve core is contacted with the lower ring surface; the bottom end of the valve seat is in contact with the higher ring surface, and the lower surface of the annular stop block is in contact with the upper surface of the annular bump at the bottom end of the valve core; the upper portion of annular dog is the seal groove, and sealing member B places in this seal groove, and is equipped with sealing member F between the outer wall of disk seat and the inner wall in holding chamber.

According to a further improvement scheme of the invention, an alloy sleeve is in interference fit with the inner wall of the second blind hole, the inner wall of the alloy sleeve is connected to the outer wall of the valve core in a sliding manner, the valve rod and the alloy sleeve extrude the sealing element B, and the bottom end of the alloy sleeve and the bottom end of the valve rod are obliquely arranged to form an included angle alpha.

The invention has the further improvement scheme that the sealing element B is a rubber sealing ring with a rectangular section, and the top end of the valve seat is obliquely arranged to form an included angle beta.

In a further development of the invention, the value of the angle β is greater than the value of the angle α.

The invention has the further improvement scheme that the sealing element A is a metal sealing gasket, and the sealing element C, the sealing element D, the sealing element E and the sealing element F are all O-shaped rubber sealing rings.

The invention has the further improvement scheme that a sheath is arranged between the valve cover and the valve seat; the top of disk seat is equipped with the recess, and the top of sheath is arranged in the recess, and the top of sheath and valve gap contact, valve rod sliding connection in the inner wall of sheath, and be equipped with a plurality of medium opening on the sheath.

The invention has the further improvement scheme that the medium circulation holes are arranged on the sheath in an annular array, the inner diameter of the medium circulation holes is the same as that of the medium outlet channel, and the medium flow through holes are flush with the inner opening of the medium outlet channel.

The invention has the beneficial effects that:

firstly, the novel cut-off straight-through type cage sleeve throttle valve disclosed by the invention realizes the function of cutting off the cage sleeve throttle valve, saves the cost, reduces the labor intensity of operators, and improves the working efficiency and the economic benefit.

Secondly, the bottom end of the accommodating cavity is arranged in a step shape to form a higher ring surface and a lower ring surface, and the valve seat and the valve core are respectively arranged at the higher ring surface and the lower ring surface, so that the position stability of the valve seat and the valve core is ensured.

Thirdly, according to the novel cut-off straight-through type cage sleeve throttling valve, the bottom end of the alloy sleeve and the bottom end of the valve rod are obliquely arranged to form an included angle alpha, the top end of the valve seat is obliquely arranged to form an included angle beta, and the numerical value of the included angle beta is larger than that of the included angle alpha, so that when the throttling valve is closed, the valve rod is firstly contacted with the valve seat, and the effect of protecting the alloy sleeve is achieved.

Fourthly, according to the novel cut-off straight-through type cage sleeve throttling valve, the sealing element F is arranged between the outer wall of the valve seat and the inner wall of the containing cavity, and the valve seat and the valve body are kept sealed continuously under the condition that the sealing element A fails.

Fifth, the novel cut-off straight-through type cage sleeve throttle valve has the advantages that the protective sleeve is arranged between the valve cover and the valve seat, the valve body can be prevented from being eroded by a medium, the service life of the valve body is prolonged, and the use cost is saved.

Sixth, the novel cut-off straight-through type cage sleeve throttle valve has the advantages that the medium circulation hole is flush with the inner opening of the medium outlet channel, so that the service life of the valve body is prolonged, and the flow velocity of the medium is not influenced.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a partial enlarged view at T in fig. 1.

Fig. 3 is a partially enlarged view of the valve body of the present invention.

Fig. 4 is a schematic view of the valve core structure of the present invention.

Fig. 5 is a schematic view of the valve seat structure of the present invention.

In the figure: 1-valve body, 2-valve cover, 3-valve seat, 4-valve rod, 5-wheel rod, 6-hand wheel, 7-accommodating cavity, 8-medium inlet channel, 9-medium outlet channel, 10-first blind hole, 11-orifice, 12-sealing element A, 13-sealing element B, 14-valve cap, 15-second blind hole, 16-nut, 17-sealing element C, 18-sealing element D, 19-supporting block, 20-thrust ball bearing, 21-higher ring surface, 22-lower ring surface, 23-annular stop block, 24-annular convex block, 25-sealing element F, 26-alloy sleeve, 27-protective sleeve, 28-medium through hole, 29-sealing element E and 30-valve core.

Detailed Description

The invention is further elucidated with reference to the drawings and the embodiments.