Novel wellhead gate valve

Abstract

The utility model relates to the technical field of well mouth gate valves, in particular to a novel well mouth gate valve which comprises a valve body, a valve seat is installed in the center of the top end of the outer wall of the valve body, a valve deck is fixed to the top end of the outer wall of the valve seat through a bolt, and a valve plate for sealing a liquid passing groove is arranged in the valve body. Sealing reinforcing parts are arranged in the valve body and located on the two sides of the valve plate. After the valve plate is rotated, hydraulic oil can be conveyed into the oil storage ring through the oil pump, so that the hydraulic telescopic rod pushes the sealing ring mounting plate to move under the action of the hydraulic oil to enable the sealing ring gasket to abut against the two sides of the outer wall of the valve plate, and the sealing effect after the valve plate is closed is improved; and meanwhile, when the gate valve needs to be opened, hydraulic oil can be recycled to enable the hydraulic telescopic rod to contract to control the sealing ring gasket to be separated from the valve plate, in this way, the sealing ring gasket can be prevented from influencing movement of the valve plate, and meanwhile abrasion of the movement of the valve plate to the sealing ring gasket can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to wellhead gate valve technical field, concretely relates to a new wellhead gate valve. BACKGROUND

[0002] Wellhead gate valve is a kind of valve for controlling liquid or gas flow, is widely used in the pipeline system of petroleum, natural gas, chemical industry and other industries. It is mainly installed at the wellhead of oil and gas well, is used to cut off or open pipeline, ensures the safe and effective management of fluid delivery.

[0003] And the existing wellhead gate valve for petroleum when using, to ensure sealing effect, often set up sealing ring pad on the both sides of valve plate to improve its sealing effect to liquid passage, but because sealing ring pad is often fixed, when valve plate and valve seat close, it is easy to cause excessive friction, lead to valve difficult to rotate, even possibly wear and tear of sealing ring pad increase, lead to bad sealing effect, therefore there is certain deficiency. UTILITY MODEL CONTENT

[0004] Therefore, the utility model provides a new wellhead gate valve to solve the problem that sealing ring pad is often fixed, when valve plate and valve seat close, it is easy to cause excessive friction, lead to valve difficult to rotate.

[0005] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme: a new wellhead gate valve, including valve body, the outer wall top center of valve body is equipped with valve seat, the outer wall top of valve seat is fixed with valve cover by bolt, the inside of valve body is provided with the valve plate that seals to liquid passage, the inside of valve body and the both sides of valve plate are provided with sealing reinforcing component;

[0006] The sealing reinforcing component includes an oil storage ring, recesses are formed in the inside of the valve body and on both sides of the valve plate, and the oil storage ring is fixedly connected with the inner wall side end of the recess.

[0007] Preferably, the inner wall of the valve cover is threadedly connected with a valve rod, the bottom end of the valve rod is rotatably connected with the corresponding position of the outer wall top of the valve plate, and the upper end of the valve rod penetrates through the outer wall top of the valve cover and is fixed with a rotating wheel.

[0008] Preferably, the inside of the valve body and the side of the oil storage ring away from the valve plate are provided with oil delivery pipes, and the other end of the oil delivery pipe penetrates through the outer wall top of the valve body and is communicated with an oil pump.

[0009] Preferably, the end of the oil storage ring away from the oil delivery pipe is fixed with a plurality of hydraulic telescopic rods, the plurality of hydraulic telescopic rods are uniformly arranged in an annular array, and the end of the hydraulic telescopic rod away from the oil storage ring is fixed with a sealing ring mounting plate.

[0010] Preferably, the hydraulic telescopic rod comprises sleeve rods, one end of each of the sleeve rods is fixedly connected with the outer wall side end of the oil storage ring, the sleeve rods and the side wall of the oil storage ring are communicated through the openings, and the inner wall of each of the sleeve rods is slidably connected with a piston plate.

[0011] Preferably, one end of each of the piston plates close to the valve plate is fixedly connected with a slide rod, the slide rod is slidably connected with the inner wall of the sleeve rod, the outer wall of the slide rod far away from the piston plate is fixedly connected with the outer wall side end of the sealing ring mounting plate, and the outer wall of the slide rod between the piston plate and the inner wall of the sleeve rod is sleeved with a reset spring for resetting.

[0012] Preferably, a plurality of guide rods are fixedly arranged at the inner wall side end of the groove and the corresponding position of the sealing ring mounting plate, the plurality of guide rods are uniformly arranged in the form of annular array, and the outer wall of the sealing ring mounting plate is slidably connected with the outer wall of the guide rod through the through hole.

[0013] Preferably, the outer wall of the sealing ring mounting plate far away from the oil storage ring is fixedly connected with a sealing ring gasket for sealing the two sides of the outer wall of the valve plate, and the sealing ring gasket and the sealing ring mounting plate are fixedly connected in a detachable mode.

[0014] The utility model discloses a beneficial effect is:

[0015] The utility model discloses after rotating good valve plate, can transport hydraulic oil to the oil storage ring through oil pump, make the hydraulic telescopic rod push sealing ring mounting plate to move under the action of hydraulic oil and make sealing ring gasket and the outer wall both sides of valve plate abut tightly, thereby to improve the sealing effect after the valve plate closes, when needing to open the gate valve, can make the hydraulic telescopic rod contract through the recovery of hydraulic oil to control sealing ring gasket and valve plate separation, this can avoid the influence that sealing ring gasket moves to valve plate, and also can reduce the abrasion of sealing ring gasket to valve plate's movement, thereby more convenient to use. ACCURATE DRAWINGS

[0016] Figure 1 It is the external structure schematic diagram of the front direction of the utility model;

[0017] Figure 2 It is the partial cross section structure schematic diagram of the front direction of the utility model;

[0018] Figure 3 It is the structure schematic diagram of the utility model Figure 2 enlarged structure schematic diagram of A place in the utility model;

[0019] Figure 4 It is the partial cross section structure schematic diagram of the front direction of the hydraulic telescopic rod in the utility model;

[0020] Figure 5 It is the three -dimensional connection structure schematic diagram of the oil storage ring and the hydraulic telescopic rod side direction in the utility model.

[0021] In the figure: 100, valve body; 110, valve seat; 120, valve cover; 130, rotating wheel; 131, valve rod; 132, valve plate; 200, oil storage ring; 210, oil delivery pipe; 220, hydraulic telescopic rod; 221, sleeve rod; 222, piston plate; 223, sliding rod; 224, return spring; 230, sealing ring mounting plate; 240, guide rod; 250, sealing ring pad. DETAILED DESCRIPTION

[0022] The preferred embodiments of the utility model are described below in combination with the drawings, and it should be understood that the preferred embodiments described herein are only used to illustrate and explain the utility model, and are not used to limit the utility model.

[0023] Refer to the drawings Figures 1-5 The utility model provides a novel wellhead gate valve, including valve body 100, the outer wall top center place of valve body 100 is installed with valve seat 110, the outer wall top of valve seat 110 is fixed with valve cover 120 through bolt, the inside of valve body 100 is provided with the valve plate 132 that seals to liquid passage groove, the inner wall of valve cover 120 is connected with valve rod 131 with screw thread, the bottom of valve rod 131 is correspondingly connected with the outer wall top of valve plate 132, and the upper end of valve rod 131 passes through the outer wall top of valve cover 120 and is fixed with rotating wheel 130, and personnel can rotate valve rod 131 by rotating rotating wheel 130, and valve rod 131 is provided with external thread at the connecting end with valve cover 120, so that valve rod 131 can be driven to move up and down when rotating valve rod 131, thereby being capable of controlling to close or open valve body 100;

[0024] The inside of valve body 100 and the both sides of valve plate 132 are provided with sealing reinforcing components, and the sealing reinforcing components include oil storage ring 200, the hollow structure of the oil storage ring 200 can store hydraulic oil, the inside of valve body 100 and the both sides of valve plate 132 are provided with grooves, the oil storage ring 200 is fixedly connected with the inner wall side end of the groove, the groove is used to install the oil storage ring 200 in the inside of valve body 100, to avoid the influence of the oil storage ring 200 on the movement of valve plate 132, the inside of valve body 100 and the side, away from valve plate 132 of oil storage ring 200 are provided with oil delivery pipe 210, the other end of oil delivery pipe 210 passes through the outer wall top of valve body 100 and is communicated with oil pump, and the oil pump is used to deliver hydraulic oil to the oil storage ring 200 or pump hydraulic oil out of the oil storage ring 200 through oil delivery pipe 210, to control the extension and contraction of hydraulic telescopic rod 220, and the oil pump is a prior art device, so it is not shown in the figure.

[0025] The oil storage ring 200 is fixed with a plurality of hydraulic telescopic rods 220 at one end away from the oil delivery pipe 210, the plurality of hydraulic telescopic rods 220 are uniformly arranged in the form of an annular array, and the hydraulic telescopic rods 220 arranged can control the sealing ring mounting plate 230 to slide under the action of hydraulic oil, so as to adjust the position of the sealing ring pad 250, the end of the hydraulic telescopic rod 220 away from the oil storage ring 200 is fixed with the sealing ring mounting plate 230, the hydraulic telescopic rod 220 comprises a sleeve rod 221, one end of the sleeve rod 221 is fixedly connected with the outer wall side end of the oil storage ring 200, the sleeve rod 221 and the side wall of the oil storage ring 200 are communicated through the opening, the inner wall of the sleeve rod 221 is slidably connected with a piston plate 222, one end of the piston plate 222 close to the valve plate 132 is fixedly connected with a slide rod 223, the slide rod 223 and the inner wall of the sleeve rod 221 are slidably connected, the outer wall side end of the sealing ring mounting plate 230 is fixedly connected with the slide rod 223 away from the piston plate 222, specifically, the hydraulic oil in the oil storage ring 200 can enter the sleeve rod 221 through the through hole, and the hydraulic oil can push the slide rod 223 to move outward through the piston plate 222, so that the sealing ring mounting plate 230 can move outward, the outer wall of the slide rod 223 and between the piston plate 222 and the inner wall of the sleeve rod 221 are sleeved with a reset spring 224 for resetting, and when the hydraulic oil is discharged from the sleeve rod 221, the reset spring 224 arranged can make the slide rod 223 slide inward to reset through the elastic force, so that the sealing ring mounting plate 230 is retracted into the groove;

[0026] A plurality of guide rods 240 are fixed at the inner wall side end of the groove corresponding to the position of the sealing ring mounting plate 230, the plurality of guide rods 240 are uniformly arranged in the form of an annular array, and the guide rods 240 arranged are used to support the sealing ring mounting plate 230 and can guide the movement direction of the sealing ring mounting plate 230, the outer wall of the sealing ring mounting plate 230 is slidably connected with the outer wall of the guide rod 240 through the through hole, the outer wall of the sealing ring mounting plate 230 away from the oil storage ring 200 is fixed with the sealing ring pad 250 for sealing the outer wall of the valve plate 132 on both sides, the sealing ring pad 250 and the sealing ring mounting plate 230 are fixed in a detachable manner, and the sealing ring pad 250 arranged can abut against the outer wall side end of the valve plate 132, so as to improve the sealing effect of the valve plate 132 on the liquid passage groove of the valve body 100.

[0027] The use process of the utility model is as follows: the operator can first assemble the device according to the above description, and install it to a suitable position for use, when it is needed to close the valve body 100, the valve rod 131 can be screwed by the rotating wheel 130 first, so that the valve plate 132 is driven to move downward to seal the through slot part of the valve body 100, when the rotating wheel 130 is closed, the oil pump can be started, so that the oil pump can deliver the hydraulic oil in the oil storage tank to the oil storage ring 200 through the oil delivery pipe 210, and the oil storage ring 200 can deliver the hydraulic oil to the hydraulic telescopic rod 220, and the sleeve rod 221 can top the sliding rod 223 to the outside after the hydraulic oil is filled, so that the sealing ring mounting plate 230 can slide along the guide rod 240 to make the sealing ring pad 250 abut against the outer wall side end of the valve plate 132, so as to seal the outer wall of the valve plate 132 on both sides;

[0028] When the gate valve needs to be opened, the hydraulic oil can be extracted by the oil pump, so that the hydraulic oil in the sleeve rod 221 flows back to the oil storage ring 200, and flows back to the oil storage tank through the oil delivery pipe 210, and the reset spring 224 can make the sliding rod 223 shrink inward by the elastic force, and the sealing ring mounting plate 230 can drive the sealing ring pad 250 to separate from the valve plate 132, so that the valve plate 132 can be controlled to move upward to reset.

[0029] The above is only the preferred embodiment of the utility model, any skilled person in the art can modify the technical solution described above or modify it into an equivalent technical solution. Therefore, any simple modification or equivalent replacement according to the technical solution of the utility model is within the scope of protection required by the utility model.

Claims

1. A novel wellhead gate valve, characterized in that: The valve body (100) includes a valve seat (110) installed at the center of the top of the outer wall of the valve body (100). A valve cover (120) is fixed to the top of the outer wall of the valve seat (110) by bolts. A valve plate (132) for sealing the liquid passage groove is provided inside the valve body (100). Sealing reinforcement components are provided inside the valve body (100) and on both sides of the valve plate (132). The sealing reinforcement component includes an oil reservoir ring (200). The valve body (100) has grooves on both sides of the valve plate (132), and the oil reservoir ring (200) is fixedly connected to the inner wall side of the groove. An oil delivery pipe (210) is provided inside the valve body (100) and on the side of the oil storage ring (200) away from the valve plate (132). The other end of the oil delivery pipe (210) passes through the top of the outer wall of the valve body (100) and is connected to an oil pump. The oil storage ring (200) is fixed with a plurality of hydraulic telescopic rods (220) at the end away from the oil supply pipe (210). The plurality of hydraulic telescopic rods (220) are evenly arranged in a ring array. The end of the hydraulic telescopic rod (220) away from the oil storage ring (200) is fixed with a sealing ring mounting plate (230).

2. The novel wellhead gate valve according to claim 1, characterized in that: The valve cover (120) is threadedly connected to a valve stem (131). The bottom end of the valve stem (131) is rotatably connected to the top end of the outer wall of the valve plate (132). The upper end of the valve stem (131) passes through the top end of the outer wall of the valve cover (120) and is fixed with a rotating wheel (130).

3. The novel wellhead gate valve according to claim 1, characterized in that: The hydraulic telescopic rod (220) includes a sleeve rod (221), one end of which is fixedly connected to the outer wall side of the oil storage ring (200). The sleeve rod (221) and the side wall of the oil storage ring (200) are connected through an opening. The inner wall of the sleeve rod (221) is slidably connected to a piston plate (222).

4. The novel wellhead gate valve according to claim 3, characterized in that: Each piston plate (222) has a slide rod (223) fixed at one end near the valve plate (132). The slide rod (223) is slidably connected to the inner wall of the sleeve rod (221). The end of the slide rod (223) away from the piston plate (222) is fixedly connected to the outer wall side of the sealing ring mounting plate (230). A reset spring (224) for reset is sleeved on the outer wall of the slide rod (223) and between the piston plate (222) and the inner wall of the sleeve rod (221).

5. The novel wellhead gate valve according to claim 3, characterized in that: Multiple guide rods (240) are fixed at the inner wall side of the groove and at the position corresponding to the sealing ring mounting plate (230). The multiple guide rods (240) are evenly arranged in a ring array. The outer wall of the sealing ring mounting plate (230) is slidably connected to the outer wall of the guide rods (240) through through holes.

6. The novel wellhead gate valve according to claim 5, characterized in that: The sealing ring mounting plate (230) is fixed with a sealing ring gasket (250) on the outer wall of the side away from the oil storage ring (200) to seal both sides of the outer wall of the valve plate (132). The sealing ring gasket (250) and the sealing ring mounting plate (230) are fixed in a detachable manner.

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