CN218118821U - A new anti-scouring blowdown valve - Google Patents

Abstract

The utility model discloses a novel anti-scouring sewage discharge shut-off valve, which relates to the field of shut-off valves. Aiming at the impact of erosion and damage on the spool of the existing separator sewage valve, it cannot form a hard seal with the valve seat, which leads to internal leakage of the separator sewage valve. In case of leakage failure, in order to ensure the normal production and operation of the site, it is urgent to make corresponding improvements to the separator blowdown valve. The following scheme is proposed, which includes the valve body, and the top of the valve body is provided with an inwardly extending upper valve sleeve. And the bottom of the upper valve sleeve is evenly opened with a throttle hole, and the throttle hole is square, and the inside of the upper valve sleeve is provided with a valve clack, and the bottom of the valve clack is chamfered. The new anti-scouring sewage stop valve adopts multiple throttling and decompression structures to share the throttling pressure of the upper valve sleeve. By increasing the internal flow area of the valve, it prevents throttling from producing high-speed fluid, reduces the flow resistance of the fluid, and protects the valve disc. Edges are chamfered.

Description

A new anti-scouring blowdown valve

technical field

The utility model relates to the field of cut-off valves, in particular to a novel anti-scouring sewage discharge stop valve.

Background technique

The blowdown valve used in the separate metering skid blowdown system is an important flow-passing part for blowdown and throttling. The blowdown stop valve is especially affected by the erosion of sand particles. The erosion will cause damage to the soft seal of the blowdown valve. The soft seal gasket is changed from the original round The shape is eroded into a polygon, the valve core is affected by erosion damage, and cannot form a hard seal with the valve seat, resulting in internal leakage failure of the separator blowdown valve. The damage or failure of the device will seriously affect the safe operation of the separation metering skid , causing large economic losses, so the maintenance of this equipment is very important.

In view of the impact of erosion damage on the spool of the existing separator blowdown valve, which cannot form a hard seal with the valve seat, resulting in internal leakage failure of the separator blowdown valve, in order to ensure the normal production and operation of the site, it is urgent to carry out corresponding repairs for the separator blowdown valve. To improve the problem, we propose a new anti-scouring blowdown valve.

Utility model content

The utility model proposes a new type of anti-scouring sewage discharge stop valve, which solves the impact of erosion damage on the spool of the existing separator sewage valve, which cannot form a hard seal with the valve seat, resulting in internal leakage failure of the separator sewage valve. In order to ensure the normal production and operation of the site, it is urgent to make corresponding improvements to the separator blowdown valve.

In order to achieve the above object, the utility model adopts the following technical solutions:

A new type of anti-scouring blowdown valve, comprising a valve body, the top of the valve body is provided with an inwardly extending upper valve sleeve, and the bottom of the upper valve sleeve is evenly opened with a throttling hole, and the throttling hole It is square, and the inside of the upper valve sleeve is provided with a valve clack, and the bottom of the valve clack is chamfered.

Preferably, an upper valve cover is provided on the top of the upper valve sleeve, and the upper valve cover is bolted to the valve body.

Preferably, the top of the upper valve cover is sleeved with a bracket, the inner wall of the bracket is provided with a packing gland, and the bottom of the packing gland extends through the upper valve cover to the inside, and one side of the bracket Set with oil cup.

Preferably, an anti-rotation block is provided at the middle of the inner wall of the bracket, a positioning bolt is provided at the top of the bracket, a seal is provided at the top of the bracket, and the seal is connected to the bracket through a positioning bolt.

Preferably, the top of the bracket is provided with an inwardly extending valve stem, the top of the valve stem is sleeved with a hand wheel, and the bottom of the valve stem extends through the anti-rotation block, the packing gland and the upper valve cover to the valve. the inside of the petal.

Preferably, a valve seat is provided on the bottom of the upper valve sleeve, and an O-ring is provided on the outside of the valve seat, and the valve seat is connected to the inner wall of the valve body through the O-ring.

Preferably, the bottom of the valve seat is provided with a lower valve sleeve, the bottom of the lower valve sleeve is provided with a lower valve cover, the bottom of the lower valve cover is provided with fixing bolts, and the lower valve cover is passed through the fixing bolts. Bolted to valve body.

The beneficial effects of the utility model are:

1. By increasing the internal flow area of the valve, prevent throttling to produce high-speed fluid; minimize the large change in the flow direction of the fluid inside the valve, that is, reduce the flow resistance of the fluid inside the valve.

2. Adopt split flow multiple throttling and decompression structure to share the throttling pressure of the upper valve sleeve, that is, slow down the high flow rate and high pressure drop caused by throttling; chamfer the edge of the valve clack so that it can be opened and closed at the moment of valve clack , slow down the fluid velocity on the throttling surface, and under the action of multiple throttling and decompression, the erosion and wear of the valve disc during the opening and closing process of the valve is well eliminated.

To sum up, the device adopts multiple throttling and decompression structures to share the throttling pressure of the upper valve sleeve. By increasing the internal flow area of the valve, it prevents throttling from producing high-speed fluid, reduces the flow resistance of the fluid, and protects the valve disc. The edge is chamfered to slow down the fluid velocity on the throttle surface at the moment of opening and closing of the valve disc, thereby eliminating the erosion and wear of the valve disc during the opening and closing process of the valve.

Description of drawings

Fig. 1 is a front view of the internal structure of the utility model.

Fig. 2 is a structural sectional view of the valve disc of the present invention.

Fig. 3 is a structural schematic diagram of the upper valve sleeve of the utility model.

Labels in the figure: 1. Lower valve cover; 2. Lower valve sleeve; 3. Valve body; 4. O-ring; 5. Valve seat; 6. Upper valve sleeve; 7. Upper valve cover; 8. Bracket; 9 , anti-rotation block; 10, oil cup; 11, hand wheel; 12, positioning bolt; 13, packing gland; 14, valve stem; 15, valve disc; 16, fixing bolt.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example.

Referring to Figures 1-3, a new type of anti-scouring sewage stop valve, the top of the valve body 3 is provided with an inwardly extending upper valve sleeve 6, and the bottom of the upper valve sleeve 6 is evenly opened with orifices, and the throttling The orifice is square, and a valve flap 15 is arranged inside the upper valve sleeve 6, and the bottom of the valve flap 15 is chamfered.

As shown in Figure 1, Figure 2 and Figure 3, the top of the upper valve sleeve 6 is provided with an upper valve cover 7, and the upper valve cover 7 is connected to the valve body 3 by bolts, and the top of the upper valve cover 7 is sleeved with a bracket 8, the bracket The inner inner wall of 8 is provided with a packing gland 13, and the bottom of the packing gland 13 extends through the upper valve cover 7 to its interior, one side of the bracket 8 is provided with an oil cup 10, and the middle part of the inner wall of the bracket 8 is provided with an anti-rotation block 9 , the top of the bracket 8 is provided with a positioning bolt 12, the top of the bracket 8 is provided with a seal, and the seal is connected with the bracket 8 through the positioning bolt 12, the top of the bracket 8 is provided with a valve stem 14 extending inward, and the valve stem 14 There is a handwheel 11 sleeved on the top of the valve stem 14, and the bottom of the valve stem 14 extends through the anti-rotation block 9, the packing gland 13 and the upper valve cover 7 to the inside of the valve disc 15;

The upper valve sleeve 6 facilitates increasing the flow area of the fluid medium by providing a square-shaped orifice and a chamfered valve flap 15 .

As shown in Figure 1, Figure 2 and Figure 3, the bottom of the upper valve sleeve 6 is provided with a valve seat 5, and the outer side of the valve seat 5 is provided with an O-shaped sealing ring 4, and the valve seat 5 is connected to the valve through the O-shaped sealing ring 4. The inner wall of the body 3 is connected, the bottom of the valve seat 5 is provided with a lower valve sleeve 2, the bottom of the lower valve sleeve 2 is provided with a lower valve cover 1, the bottom of the lower valve cover 1 is provided with a fixing bolt 16, and the lower valve cover 1 It is bolted to the valve body 3 through fixing bolts 16 .

When the utility model is in use, first install the device at an appropriate position, and when the fluid medium flows through the valve cavity, the rounded trapezoidal disc 15 will throttle and decompress the medium first, and guide the fluid at a certain angle Flowing into the soft sealing part of the disc 15, the flow velocity of the fluid reaching the soft sealing pair has been greatly reduced after throttling and decompression. At the same time, in order to maximize the flow area at the orifice, the upper valve sleeve 6. The circular orifice (with an inner diameter of 18mm) is improved into a square orifice. The side length of the square orifice is 18mm. The edge of the disc 15 is chamfered so that the throttling can be slowed down when the disc 15 is opened and closed. Surface fluid velocity.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. The equivalent replacement or change of the new technical solution and the concept of the utility model shall be covered by the protection scope of the utility model.

Claims (7)

1. The utility model provides a novel antiscour blowdown stop valve, includes valve body (3), its characterized in that, the top of valve body (3) is provided with last valve sleeve (6) to inside extension, just the orifice has evenly been seted up to the bottom of going up valve sleeve (6), just the orifice is squarely, the inside of going up valve sleeve (6) is provided with valve clack (15), the bottom of valve clack (15) is the chamfer setting.

2. The novel anti-scouring blowdown stop valve according to claim 1, wherein an upper valve cover (7) is arranged at the top of the upper valve sleeve (6), and the upper valve cover (7) is in bolted connection with the valve body (3).

3. The novel anti-scouring blowdown stop valve as claimed in claim 2, wherein a support (8) is sleeved on the top of the upper valve cover (7), a packing gland (13) is arranged on the inner wall of the interior of the support (8), the bottom of the packing gland (13) penetrates through the upper valve cover (7) and extends into the interior of the upper valve cover, and an oil cup (10) is arranged on one side of the support (8).

4. A novel anti-scouring blowdown stop valve as claimed in claim 3, wherein an anti-rotation block (9) is arranged in the middle of the inner wall of the support (8), a positioning bolt (12) is arranged at the top of the support (8), a sealing member is arranged at the top of the support (8), and the sealing member is connected with the support (8) through the positioning bolt (12).

5. The novel anti-scouring blowdown stop valve as claimed in claim 4, wherein a valve rod (14) extending inwards is arranged at the top of the support (8), a hand wheel (11) is sleeved at the top of the valve rod (14), and the bottom of the valve rod (14) penetrates through the anti-rotation block (9), the packing gland (13) and the upper valve cover (7) and extends to the inside of the valve clack (15).

6. A novel anti-scouring blowdown stop valve as claimed in claim 1, wherein a valve seat (5) is arranged at the bottom of the upper valve housing (6), an O-ring (4) is arranged outside the valve seat (5), and the valve seat (5) is connected with the inner wall of the valve body (3) through the O-ring (4).

7. The novel anti-scouring blowdown stop valve according to claim 6, wherein a lower valve sleeve (2) is arranged at the bottom of the valve seat (5), a lower valve cover (1) is arranged at the bottom of the lower valve sleeve (2), a fixing bolt (16) is arranged at the bottom of the lower valve cover (1) in a penetrating mode, and the lower valve cover (1) is in bolted connection with the valve body (3) through the fixing bolt (16).

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