Petroleum wellhead sealing device

Abstract

The utility model relates to the technical field of petroleum well mouths, and discloses a petroleum well mouth sealing device which comprises a valve body and a valve port. Valve ports are formed in the ends of the two sides of the valve body. Comprising a clamping assembly, a connecting assembly and a sealing assembly which are arranged on a valve body, the clamping assembly is arranged on a valve port, the connecting assembly is arranged on the clamping assembly, and the sealing assembly is arranged on the valve port; according to the check valve, the clamping assembly, the connecting assembly and the sealing assembly are arranged on the valve body, the clamping assembly is convenient to install and the connecting stability is enhanced through the cooperation of the clamping head and the clamping hole and the elasticity of the clamping spring; firm connection is ensured through connecting screws, fastening holes and mounting holes of the connecting assemblies; the sealing ring and the sealing ring in the sealing assembly provide double sealing guarantee, the cavity in the sealing ring, the tiny through hole and the observation window form a leakage observation device, the leakage condition of the connecting part can be found in time, the defect in the aspect of leakage observation of a connecting device in the prior art is effectively overcome, and the reliability of the petroleum wellhead sealing device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to petroleum wellhead technical field, concretely is a kind of petroleum wellhead sealing device. BACKGROUND

[0002] The patent document with the announcement number CN115637946B discloses a kind of petroleum wellhead sealing device, including well body, the upper end of the well body is equipped with body, the both sides of the body are equipped with fixed mechanism, the upper end of the body is detachably connected with equipment box, the present application can be fixed and installed in petroleum wellhead by screwing mode with petroleum wellhead sealing device, simultaneously, the rotation of petroleum wellhead sealing device can be limited by fixed mechanism, so that petroleum wellhead sealing device can be installed in petroleum wellhead while guaranteeing its installation strength, effectively improve the convenience in the installation process of petroleum wellhead sealing device, simultaneously, the impact resistance when petroleum wellhead sealing device seals petroleum wellhead can be improved, avoid that the pressure in petroleum wellhead is too large and seals plug is ejected, effectively improve the safety of petroleum wellhead sealing device.

[0003] But the above scheme and prior art, in petroleum exploitation operation, wellhead connecting device place is influenced by long-term high pressure, complex medium erosion and mechanical vibration etc. factor, possibly there is the situation of leakage caused by sealing failure, some existing connecting device still has some shortcomings in the setting of its leakage observation device, therefore, can be improved and optimized.

[0004] Therefore, the utility model provides a kind of petroleum wellhead sealing device for solving the above problems. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of petroleum wellhead sealing device to solve the problems raised in the above background.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of petroleum wellhead sealing device, including valve body, valve port;The both sides end of the valve body is provided with valve port;

[0007] It is characterized by: including the clamping assembly on valve body, connecting assembly, sealing assembly, the clamping assembly is arranged on valve port, the connecting assembly is arranged on clamping assembly, and the sealing assembly is arranged on valve port.

[0008] Preferably, the clamping head of the clamping assembly is fixedly arranged on the mounting head, the clamping spring is telescopically connected on the clamping head, and the both sides end of the clamping spring is fixedly arranged on the clamping head.

[0009] Preferably, the clamping holes in the clamping assembly are uniformly arranged on the second mounting head at the one side end of the valve port, and the clamping holes are matched with the clamping heads.

[0010] Preferably, the connecting screws in the connecting assembly are matched and fixedly connected on the mounting head and the second mounting head, the second mounting head is uniformly provided with the fastening holes, and the mounting head is provided with the mounting holes.

[0011] Preferably, the sealing rings in the sealing assembly are fixedly provided with the sealing rings at the two side ends, and the sealing rings are matched and clamped on the mounting head and the second mounting head.

[0012] Preferably, the sealing rings in the sealing assembly are provided with cavities, the cavities are provided with the tiny through holes at the bottom ends, and the cavities are provided with the observation windows at the top parts.

[0013] Compared with the prior art, the clamping assembly, the connecting assembly and the sealing assembly are arranged on the valve body, the clamping assembly utilizes the cooperation of the clamping heads and the clamping holes and the elasticity of the clamping springs, the installation is facilitated, and the connection stability is enhanced, the connecting screws, the fastening holes and the mounting holes of the connecting assembly ensure firm connection, the sealing rings and the sealing rings of the sealing assembly provide double sealing protection, meanwhile, the cavities, the tiny through holes and the observation windows in the sealing rings constitute a leakage observation device, the leakage condition of the connection part can be found in time, the deficiency of the prior art in the leakage observation of the connecting device is effectively made up, and the reliability and the safety of the petroleum wellhead sealing device are improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is a whole structure schematic view of the utility model;

[0015] Fig. 2 It is a connecting assembly structure schematic view of the utility model;

[0016] Fig. 3 It is a clamping assembly structure schematic view of the utility model;

[0017] Fig. 4 It is a sealing assembly structure schematic view of the utility model.

[0018] In the drawing: valve body 1, valve port 2, clamping assembly 3, connecting assembly 4, sealing assembly 5, clamping head 301, mounting head 302, clamping spring 303, clamping hole 304, second mounting head 305, connecting screw 401, fastening hole 402, mounting hole 403, sealing ring 501, sealing ring 502, cavity 503, tiny through hole 504, observation window 505. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme of the utility model carry out clearly, complete description, and the advantage is more clear and distinct, the following combining with the drawing to the utility model embodiment carries out further detailed explanation, should understand, the specific embodiment described here is the utility model part embodiment, rather than all the embodiments, only use to explain the utility model embodiment, and does not use to limit the utility model embodiment, the ordinary skill in the art person who obtains all other embodiments without making the creative labor under the premise belongs to the utility model protection range, the following will clearly, completely describe the technical scheme in the utility model embodiment.

[0020] Embodiment one: please refer to Figs. 1-2 A kind of petroleum wellhead sealing device, including valve body 1, valve port 2;Valve body 1 both sides end portion is provided with valve port 2;

[0021] Including the clamping assembly 3 on valve body 1, connecting assembly 4, sealing assembly 5, clamping assembly 3 is set on valve port 2, connecting assembly 4 is set on clamping assembly 3, sealing assembly 5 is set on valve port 2.

[0022] Clamping head 301 in clamping assembly 3 is fixedly arranged on mounting head 302, clamping head 301 is adaptably connected with clamping spring 303, clamping spring 303 both sides end portion is fixedly arranged on clamping head 301.

[0023] When using, first with clamping head 301 and clamping spring 303 mounting head 302 is moved to the vicinity of valve port 2, using the elasticity of clamping spring 303, clamping head 301 is aligned with the installation position of one side end of valve port 2, since clamping spring 303 is in the state of being connected on clamping head 301 and both ends are fixed on clamping head 301, when being close to installation position, clamping spring 303 will produce certain deformation, auxiliary clamping head 301 accurate positioning, so that mounting head 302 can be initially stabilized at valve port 2, prepare for subsequent connection step, facilitate the more stable connection operation of subsequent connecting assembly 4.

[0024] Embodiment two: on the basis of embodiment one, please refer to Figs. 2-3 Clamping hole 304 in clamping assembly 3 is evenly arranged on second mounting head 305 of one side end of valve port 2, and clamping head 301 is adaptively clamped in clamping hole 304.

[0025] Connecting screw 401 in connecting assembly 4 is adaptively fixedly connected on mounting head 302 and second mounting head 305, and second mounting head 305 is evenly provided with fastening hole 402, and mounting head 302 is provided with mounting hole 403.

[0026] In use, when the clamping head 301 is aligned with the clamping hole 304 on the second mounting head 305, the mounting head 302 is pushed towards the second mounting head 305, and the clamping head 301 is clamped into the clamping hole 304, at this time, the clamping assembly 3 completes the clamping action and provides preliminary connection stability, then the mounting head 302 is screwed with the second mounting head 305 through the connecting screw 401, and the connection between the two is ensured to be firm, and the installer can use a tool to pass through the fastening hole 402 on the second mounting head 305 and the mounting hole 403 on the mounting head 302 to further tighten the connection part, prevent the connection from loosening due to vibration, pressure and other factors during oil exploitation, and ensure the reliability of the connection of the entire oil well mouth sealing device.

[0027] Example three: on the basis of example two, please refer to Figs. 3-4 The sealing ring 501 in the sealing assembly 5 is fixedly provided with a sealing ring 502 at both sides of the inner end, and the sealing ring 501 is adaptively clamped on the mounting head 302 and the second mounting head 305.

[0028] The sealing ring 501 in the sealing assembly 5 is provided with a cavity 503, the bottom end of the cavity 503 is provided with a small transparent hole 504, and the top of the cavity 503 is provided with an observation window 505.

[0029] In use, after the mounting head 302 and the second mounting head 305 are connected firmly, the sealing ring 501 is clamped on the mounting head 302 and the second mounting head 305, the sealing ring 502 fixed at both sides of the inner end of the sealing ring 501 is extruded during the clamping process, tightly fits the contact surface of the mounting head 302 and the second mounting head 305, forms double sealing, effectively prevents the leakage of oil and other media, and if the connection part leaks due to sealing failure during oil exploitation operation, the leaked medium will enter the cavity 503 through the small transparent hole 504 at the bottom end of the cavity 503 in the sealing ring 501, and the worker can discover the leakage in time through the observation window 505, so that corresponding measures are taken to ensure the safe operation of the oil well mouth sealing device.

[0030] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An oil well head sealing device, comprising a valve body (1), a valve port (2); the valve body (1) is provided with a valve port (2) at both ends; comprising a clamping assembly (3), a connecting assembly (4), a sealing assembly (5) on the valve body (1), the clamping assembly (3) is arranged on the valve port (2), the connecting assembly (4) is arranged on the clamping assembly (3), and the sealing assembly (5) is arranged on the valve port (2). characterized in that The clamping head (301) in the clamping assembly (3) is fixedly arranged on the mounting head (302), the clamping spring (303) is matched and connected on the clamping head (301), and the clamping spring (303) is fixedly arranged on the clamping head (301) at both ends.

2. A petroleum wellhead sealing device according to claim 1, characterized in that: The clamping hole (304) in the clamping assembly (3) is uniformly arranged on the second mounting head (305) at one end of the valve port (2), and the clamping hole (304) is matched and connected with the clamping head (301).

3. The petroleum wellhead sealing device of claim 1, wherein: The connecting screw (401) in the connecting assembly (4) is matched and fixedly connected on the mounting head (302) and the second mounting head (305), the second mounting head (305) is uniformly provided with a fastening hole (402), and the mounting head (302) is provided with a mounting hole (403).

4. A petroleum wellhead sealing device according to claim 3, wherein: The sealing ring (501) in the sealing assembly (5) is fixedly arranged with a sealing ring (502) at both ends, and the sealing ring (501) is matched and connected on the mounting head (302) and the second mounting head (305).

5. The petroleum wellhead sealing device of claim 1, wherein: The sealing ring (501) in the sealing assembly (5) is provided with a cavity (503), the bottom end of the cavity (503) is provided with a micro hole (504), and the top of the cavity (503) is provided with an observation window (505).

6. The petroleum wellhead sealing device of claim 1, wherein: ​

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