CN116357756A - Novel super high pressure light structure fracturing gate valve - Google Patents

Abstract

The invention discloses a novel ultra-high pressure light structure fracturing gate valve, which includes a valve body, a valve plate, a valve seat assembly, a valve stem, a valve cover, a packing gland, a bearing, a valve cap, a handwheel adapter, a handwheel, and a ball Screw components, lip packing, bolts and nuts, metal gasket rings, tail rods, tail rod covers, etc. The valve seat components are installed on both sides of the valve body when opening, the sealing surface of the valve seat is parallel to the opening surface, and the two sides of the valve plate The end is parallel to the valve seat surface, and a metal gasket ring is installed between the valve body and the valve cover. The valve body and the valve cover are connected by bolts and nuts. The root is sealed, the upper end of the valve cover is installed in sequence with the packing gland, bearing, ball screw assembly, bonnet, handwheel adapter, and handwheel, and the tail rod cover is installed at the lower end of the valve body. The novel ultra-high pressure light structure fracturing gate valve of the present invention has the advantages of convenient operation, reasonable design, reliable service life and lower cost, and is especially suitable for fracturing operations with large diameter, high pressure and large flow.

Description

A new ultra-high pressure light structure fracturing gate valve

technical field

The invention relates to the field of valves used in oil and natural gas development, in particular to a novel ultra-high pressure light structure fracturing gate valve.

Background technique

The exploration and development of shale gas started in foreign countries. After years of exploration, it has achieved full self-sufficiency in natural gas through the shale gas revolution and has become a net exporter of natural gas. China started relatively late in the field of shale gas exploration and development, but after the recent After several years of development, it has mastered shale gas geophysics, drilling and completion, fracturing and other technologies, and has the ability to drill horizontal wells and staged fracturing, and has initially formed a shale gas exploration and development technology system suitable for China's geological conditions .

In the process of horizontal well drilling and staged fracturing, many valves with large diameter, high pressure and large flow are often used, among which gate valves have the largest number. In order to adapt to the large diameter, high pressure and large flow under fracturing conditions The various fracturing gate valves currently on the market have a large weight, resulting in high processing and manufacturing costs. In addition, it also brings great troubles to the transportation and hoisting of on-site equipment. At the same time, the existing fracturing gate valves often The phenomenon of sand accumulation in the cavity of the valve body occurs, which seriously affects the efficiency of on-site work.

Therefore, it is necessary to propose a new ultra-high pressure light structure fracturing gate valve to solve the above problems.

Contents of the invention

The main purpose of the present invention is to provide a novel ultra-high pressure light structure fracturing gate valve, which can effectively solve the problems in the background technology.

In order to achieve the above object, the technical scheme that the present invention takes is:

A new ultra-high pressure light structure fracturing gate valve, including valve body, valve plate, valve seat assembly, valve stem, valve cover, packing gland, bearing, valve cap, handwheel adapter, handwheel, ball screw assembly, Lip packing, bolts and nuts, metal gasket ring, tail rod, tail rod cover, the valve seat assembly is installed on both sides of the valve body, the valve plate is connected with the tail rod and valve stem, and the valve The plate is installed between two valve seat assemblies, a metal gasket ring is installed between the valve body and the valve cover, the valve body and the valve cover are connected by bolts and nuts, and the tail rod and the valve body are connected by bolts and nuts. The lip-shaped packing is used for sealing, the upper end of the valve cover is installed with packing gland, bearing, ball screw assembly, bonnet, handwheel adapter, and handwheel in sequence, and the tail rod cover is installed at the lower end of the valve body.

Preferably, the valve seat assembly is installed on both sides of the opening of the valve body, the sealing surface of the valve seat is parallel to the opening surface, the valve seat assembly includes the valve seat and the valve seat sealing ring, and the valve plate is connected with the tail rod and the valve stem. The valve plate is installed between two valve seat components, and the two ends of the valve plate are parallel to the seat surface.

Preferably, a metal sealing washer is installed between the valve body and the valve cover, and the valve body and the valve cover are connected by bolts and nuts, and the metal sealing washer is assisted in sealing by the pretightening force of the bolts and nuts.

Preferably, the valve stem is sealed with the valve cover, the tail rod and the valve body through lip-shaped packing.

Preferably, the metal gasket ring is a double-acting metal gasket ring, and its sealing surface is a spherical plane.

Preferably, the lip-shaped packing is a multi-lip packing.

Preferably, the valve seat and the valve plate, the valve seat and the valve body are sealed with metal to metal, the valve seat and the valve plate, the valve seat and the valve body are designed with a small gap, and the middle cavity of the valve body adopts a rectangular groove structure .

Preferably, the valve body and bonnet are pre-pressurized before finishing, and the sealing parts of the valve body and bonnet are surfacing with corrosion-resistant alloys, and the valve body has a tail rod stuffing box and a tail rod reverse sealing structure .

Beneficial effect

Compared with the prior art, the present invention provides a novel ultra-high pressure light structure fracturing gate valve, which has the following beneficial effects:

1. The new ultra-high pressure light structure fracturing gate valve adopts a rectangular groove structure in the middle cavity of the valve body, and adopts pre-pressure treatment before finishing, which greatly reduces the wall thickness and the weight of the entire valve, saving processing and manufacturing cost.

2. The new ultra-high pressure light structure fracturing gate valve adopts a small gap design between the valve seat and the valve plate, the valve seat and the valve body, and the lip-shaped packing is a multi-lip packing, and the sealing parts of the valve body and the bonnet are sealed. Corrosion-resistant alloy surfacing treatment, the valve has better sand control effect and longer service life.

3. The new ultra-high pressure light structure fracturing gate valve is operated by a ball screw assembly and has a tail rod structure with a smaller operating torque.

4. In this new ultra-high pressure light structure fracturing gate valve, the metal gasket ring used between the valve cover and the valve body is a two-way acting metal gasket ring, and its sealing surface is a spherical plane. This type of gasket ring is reliable in sealing and can be disassembled repeatedly. use.

Description of drawings

Fig. 1 is a sectional view of the present invention;

Fig. 2 is a structural representation of the metal gasket ring of the present invention;

Fig. 3 is a structural schematic diagram of the multi-lip packing of the present invention;

Fig. 4 is a structural schematic diagram of a rectangular groove used in the cavity of the valve body of the present invention;

Fig. 5 is a schematic diagram of the external structure of the present invention.

In the figure: 1. Valve body; 2. Valve plate; 3. Valve seat; 4. Valve stem; 5. Bonnet; 6. Packing gland; 7. Bearing; 8. Bonnet; 9. Handwheel adapter; 10. Hand wheel; 11. Ball screw assembly; 12. Lip packing; 13. Bolt and nut; 14. Metal gasket ring; 15. Tail rod; 16. Tail rod cover.

Detailed ways

In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

Specific embodiment one:

As shown in Figure 1-5, a new ultra-high pressure light structure fracturing gate valve includes a valve body 1, a valve plate 2, a valve seat assembly 3, a valve stem 4, a valve cover 5, a packing gland 6, a bearing 7, Bonnet 8, handwheel adapter 9, handwheel 10, ball screw assembly 11, lip packing 12, bolts and nuts 13, metal gasket ring 14, tail rod 15, tail rod cover 16, valve seat assembly 3 installed on On both sides of the opening of the valve body 1, the valve plate 2 is connected with the tail rod 15 and the valve stem 4, the valve plate 2 is installed between the two valve seat components 3, and a metal gasket is installed between the valve body 1 and the valve cover 5 Ring 14, the valve body 1 and the valve cover 5 are connected by bolts and nuts 13, the tail rod 15 and the valve body 2 are sealed by lip packing 12, and the upper end of the valve cover 5 is installed with packing gland 6 and bearing 7 in sequence , ball screw assembly 11, bonnet 8, handwheel adapter 9, handwheel 10, the tail rod cover 16 is installed at the lower end of the valve body 1, the valve seat assembly 3 is installed on both sides of the opening gear of the valve body 1, the sealing surface of the valve seat is in contact with the opening The gear surfaces are parallel, the valve seat assembly 3 includes the valve seat and the valve seat sealing ring, the valve plate 2 is connected with the tail rod 15 and the valve stem 4, the valve plate 2 is installed between the two valve seat assemblies 3, and the two ends of the valve plate 2 Parallel to the valve seat surface, a metal gasket ring 14 is installed between the valve body 1 and the valve cover 5, and the valve body 1 and the valve cover 5 are connected by bolts and nuts 13, and the metal gasket ring is assisted by the pretightening force of the bolts and nuts. 14 sealing, between the valve stem 4 and the valve cover 5, the tail rod 15 and the valve body 2 are sealed by lip-shaped packing 12, the metal gasket ring 14 is a double-acting metal gasket ring, and its sealing surface is a spherical plane, lip-shaped The packing 12 is a multi-lip packing, the valve seat 3 and the valve plate 2, the valve seat 3 and the valve body 1 adopt metal-to-metal sealing, the valve seat 3 and the valve plate 2, the valve seat 3 and the valve body 1 The small gap design is adopted, the middle cavity of the valve body 1 adopts a rectangular groove structure, the valve body 1 and the valve cover 5 are pre-stressed before finishing, and the sealing parts of the valve body 1 and the valve cover 5 are surfacing with corrosion-resistant alloys. The valve body 1 has a tail rod stuffing box and a tail rod reverse sealing structure.

The middle cavity of the valve body 1 adopts a rectangular groove structure, and before finishing, it adopts pre-pressure treatment, which greatly reduces the wall thickness, reduces the weight of the entire valve, and saves processing and manufacturing costs. The valve seat 3 and the valve plate 2, The valve seat 3 and the valve body 1 adopt a small gap design, and the lip packing 12 is a multi-lip packing, and the sealing parts of the valve body 1 and the valve cover 5 are surfacing with corrosion-resistant alloy, so that the sand prevention effect of the valve is better , longer service life, the valve operation is operated by ball screw assembly 11, and has a tail rod 15 structure, the operating torque is smaller, and the metal gasket ring 14 is used as a double-acting metal gasket between the valve cover 5 and the valve body 1 The sealing surface of the ring is a spherical plane. This kind of gasket is reliable in sealing and can be disassembled and used repeatedly.

Specific embodiment two:

As shown in Figure 1, this embodiment provides a new type of fracturing gate valve, including valve body 1, valve plate 2, valve seat assembly 3, valve stem 4, valve cover 5, packing gland 6, bearing 7, valve Cap 8, handwheel adapter 9, handwheel 10, ball screw assembly 11, lip packing 12, bolt nut 13, metal gasket ring 14, tail rod 15, tail rod cover 16, etc.

As shown in Figure 1, this embodiment provides a new type of fracturing gate valve. When the valve needs to be opened/closed, the handwheel 10 is operated to rotate counterclockwise/clockwise, and the torque of the handwheel 10 is transmitted to the handwheel adapter. 9. The handwheel adapter 9 drives the ball screw assembly 11, and the ball screw assembly 11 converts the torque into linear motion, thereby driving the valve stem 4 and the valve plate 2 to move up and down to complete the switch of the valve. When the valve is in the open position , the channel of valve body 1, the through hole of valve plate 2, and the through hole of valve seat assembly 3 are connected, and the fluid can flow smoothly from the upstream to downstream of the valve body; when the valve is in the closed position, the valve body 1 and the valve seat 3 The upstream and downstream through holes are cut off by the valve plate 2, thus completing the cutoff of the entire fluid.

As shown in Figure 1, this embodiment provides a new type of fracturing gate valve. The valve seat assembly 3 is installed on both sides of the opening of the valve body 1. The sealing surface of the valve seat is parallel to the opening surface. The valve seat assembly 3 includes the valve seat and Valve seat sealing ring; valve plate 2 is connected with tail rod 15 and valve stem 4, valve plate 2 is installed between two valve seat components 3, both ends of valve plate 2 are parallel to valve seat surface, valve seat 3 is connected with valve plate 2. The metal-to-metal seal is used between the valve seat 3 and the valve body 1, which has better sealing performance and longer service life. At the same time, a small gap is adopted between the valve seat 3 and the valve plate 2, and the valve seat 3 and the valve body 1. It has better sand control effect.

As shown in Figure 1, this embodiment provides a new type of fracturing gate valve. A metal gasket ring 14 is installed between the valve body 1 and the valve cover 5, and the valve body 1 and the valve cover 5 are connected by bolts and nuts 13. Through the pretightening force of the bolts and nuts, the sealing of the metal gasket ring 14 is assisted. At the same time, the valve body 1 and the valve cover 5 are pre-stressed before finishing, which improves the pressure bearing and fatigue resistance of the entire valve.

As shown in FIG. 2 , this embodiment provides a new type of fracturing gate valve. The lip-shaped packing 12 is multi-lip packing, which has better sealing performance and sand control performance.

As shown in FIG. 3 , this embodiment provides a new type of fracturing gate valve. The metal gasket ring 14 is a double-acting metal gasket ring, and its sealing surface is a spherical plane. This type of gasket ring can be disassembled and used repeatedly.

As shown in Figures 1 and 4, this embodiment provides a new type of fracturing gate valve. The valve body 1 has a tail rod stuffing box and a tail rod reverse seal structure. At the same time, the middle cavity of the valve body 1 adopts a rectangular groove structure. The weight of the entire valve is reduced.

It should be noted that the present invention is a new ultra-high pressure light structure fracturing gate valve. When the valve needs to be opened/closed, the hand wheel 10 is operated to rotate counterclockwise/clockwise, and the torque of the hand wheel 10 is transmitted to the hand wheel. The adapter 9 and the handwheel adapter 9 drive the ball screw assembly 11, and the ball screw assembly 11 converts the torque into linear motion, thereby driving the valve stem 4 and the valve plate 2 to move up and down to complete the switch of the valve. When the valve is in the open position When the valve body 1 channel, the valve plate 2 through hole, and the valve seat assembly 3 through hole are connected, the fluid can smoothly flow from the upstream to the downstream of the valve body; when the valve is in the closed position, the valve body 1 and the valve seat The upstream and downstream through holes of 3 are cut off by the valve plate 2, thus completing the cutoff of the entire fluid.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments, and what described in the above-mentioned embodiments and the description only illustrates the principles of the present invention, and the present invention will also have other functions without departing from the spirit and scope of the present invention. Variations and improvements are possible, which fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (8)

1. A new ultra-high pressure light structure fracturing gate valve, including valve body (1), valve plate (2), valve seat assembly (3), valve stem (4), valve cover (5), packing gland ( 6), bearing (7), bonnet (8), handwheel adapter (9), handwheel (10), ball screw assembly (11), lip packing (12), bolt and nut (13), metal Gasket ring (14), tail rod (15), tail rod cover (16), characterized in that: the valve seat assembly (3) is installed on both sides of the valve body (1), and the valve plate (2 ) is connected with the tail rod (15) and the valve stem (4), the valve plate (2) is installed between two valve seat assemblies (3), the valve body (1) and the valve cover (5) A metal gasket ring (14) is installed between them, the valve body (1) and the valve cover (5) are connected by bolts and nuts (13), and the tail rod (15) and the valve body (2) are connected by The lip-shaped packing (12) is used for sealing, and the upper end of the bonnet (5) is sequentially installed with the packing gland (6), bearing (7), ball screw assembly (11), bonnet (8), and handwheel adapter (9), hand wheel (10), tail rod cover (16) is installed at the lower end of the valve body (1). 2. A new ultra-high pressure light structure fracturing gate valve according to claim 1, characterized in that: the valve seat assembly (3) is installed on both sides of the opening of the valve body (1), and the sealing surface of the valve seat is in contact with the opening. The gear surfaces are parallel, the valve seat assembly (3) includes the valve seat and the valve seat sealing ring, the valve plate (2) is connected with the tail rod (15) and the valve stem (4), and the valve plate (2) is installed on the two valve seats Between the components (3), both ends of the valve plate (2) are parallel to the valve seat surface. 3. A new ultra-high pressure light structure fracturing gate valve according to claim 1, characterized in that: a metal gasket ring (14) is installed between the valve body (1) and the valve cover (5), and the valve The body (1) and the bonnet (5) are connected by bolts and nuts (13), and the pretightening force of the bolts and nuts assists the sealing of the metal gasket ring (14). 4. A new ultra-high pressure light structure fracturing gate valve according to claim 1, characterized in that: the valve stem (4) and the valve cover (5), the tail rod (15) and the valve body (2) The space is sealed by lip packing (12). 5. A new ultra-high pressure light-structure fracturing gate valve according to claim 1, characterized in that: the metal gasket ring (14) is a double-acting metal gasket ring, and its sealing surface is a spherical plane. 6. A new ultra-high pressure light structure fracturing gate valve according to claim 1, characterized in that: the lip-shaped packing (12) is a multi-lip packing. 7. A new ultra-high pressure light structure fracturing gate valve according to claim 1, characterized in that: the valve seat (3) and the valve plate (2), the valve seat (3) and the valve body (1) A metal-to-metal seal is adopted between the valve seat (3) and the valve plate (2), and a small gap design is adopted between the valve seat (3) and the valve body (1), and the cavity of the valve body (1) adopts a rectangular groove structure. 8. A new ultra-high pressure light structure fracturing gate valve according to claim 1, characterized in that: the valve body (1) and valve cover (5) are pre-pressurized before finishing, and the valve body (1) and the valve cover (5) are subjected to corrosion-resistant alloy surfacing treatment, and the valve body (1) has a tail rod stuffing box and a tail rod reverse sealing structure.

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