A kind of sealing device for sampling cock anti-drip oil

Abstract

The present application relates to the technical field of valves and their accessories, and specifically discloses a sealing device for sampling cocks to prevent oil dripping, including a valve housing, the valve housing is provided with an inlet joint and an outlet joint, and a main oil channel arranged inside the valve housing to connect the inlet joint and the outlet joint, the main oil channel is also connected to a branch oil channel, the valve housing is provided with a sealing device for sampling cocks to prevent oil dripping, and the branch oil channel is also provided with a second stop valve core for controlling the on-off between the main oil channel and the sealing device; the sealing device includes a steel ball that presses and seals the oil outlet through a spring. The sealing device provided by the utility model can realize the on-off control of the fluid, sampling control and self-sealing to prevent dripping, avoiding the problem of residual dripping in the sampling tube and environmental pollution in the existing sampling valve.

Description

Technical Field

[0001] The utility model relates to the technical field of cock valves, in particular to the technical field of cock valves in the process of oil field exploitation, in particular to a cock oil-drip-proof sealing device for sampling. Background Art

[0002] Cock valves are usually used in conjunction with pressure gauges to monitor the pressure inside the fluid in real time. In addition to the shutoff and cutoff functions of conventional valves, Cock valves can also be used for sampling. Taking the existing multifunctional stop valve CJ123W / H as an example, it has the characteristics of simple structure, high quality and low price, and good sealing performance. CJ123W multifunctional stop valve is a multifunctional stop valve that can adjust and cut off the medium and perform sampling and exhaust sampling. It has a wide range of applications and can be used for high-temperature and high-pressure gas or liquid media, and is suitable for use with a pressure gauge.

[0003] The multifunctional stop valve CJ123W / H can integrate the process requirements of industrial pipelines such as sampling, sewage discharge, pressure relief and installation of pressure gauges, which are composed of multiple valves. It not only saves materials and pressure gauge rings, but also reduces the number of sealing connection points. Sampling does not affect the pressure expression, which prolongs the service life of the pressure gauge. Therefore, it is widely used in industrial pipelines such as petroleum, chemical industry, textile, metallurgy, etc. It has received high praise and is currently the most ideal and practical valve.

[0004] However, during actual use on site, when sampling a medium with relatively high viscosity, there is residual medium in the 2cm-3cm hollow tube of the sampling tube after each sampling, which causes the residual medium to drip from the sampling port onto the ground or equipment after each sampling, causing pollution to the production site. The current measure is to use plastic bottles to collect oil to prevent dripping, but this invisibly increases safety hazards and affects the appearance, because plastic bottles are flammable, and crude oil is not cleaned up in time, and the accumulation of small amounts can easily cause great safety risks. In order to solve the above technical problems, the present invention is specially proposed. Utility Model Content

[0005] After the sampling valve of the prior art completes sampling, the sampling sample will inevitably remain in the sampling tube, causing the sample to drip and pollute the environment. The oil sample is also prone to flammability hazards. In order to solve the problems of sampling residue and flammability caused by the residual dripping of the oil sample, the present application provides an anti-drip oil sealing device for the sampling cock. The self-sealing of the sealing device can prevent the oil from continuing to drip and cause environmental pollution after the sampling is completed.

[0006] In order to achieve the above purpose, the technical solution adopted in this application is:

[0007] A sealing device for preventing oil dripping from a sampling cock comprises a valve housing, the valve housing being provided with an inlet joint and an outlet joint, and a main oil passage arranged inside the valve housing for connecting the inlet joint and the outlet joint, the main oil passage being also connected with a branch oil passage, the valve housing being provided with a sealing device for preventing oil dripping from a sampling cock, the branch oil passage being also provided with a second shut-off valve core for controlling the connection and disconnection between the main oil passage and the sealing device; the sealing device comprises a steel ball which presses and seals the oil outlet through a spring.

[0008] In order to better solve the problem of sample dripping, preferably, the sealing device includes a sampling connector that is detachably sealed to the valve housing, the sampling connector has a sampling oil channel connected to the branch oil channel, a spring is fixedly sleeved on the outer wall of the sampling connector, the other end of the spring is fixedly connected to an end cover, and the end cover presses the steel ball onto the outlet end face of the sampling oil channel for sealing under the elastic force of the spring.

[0009] In order to make the structure of the sealing device replaceable and avoid the problem of increased cost due to replacement of the entire cock valve due to damage to the valve body or the sealing device, the present application also provides another structure of the sealing device, and further preferably, the sealing device includes a sampling joint that is detachably sealed and connected to the valve housing, the sampling joint has a sampling oil channel connected to the branch oil channel, the outer wall of the sampling joint is also fixedly sleeved with a sleeve, and a retaining ring structure is provided on the circumferential side wall of the sleeve, the retaining ring structure is used to fix one end of a spring sleeved on the outer side wall of the sleeve, the other end of the spring is fixed with an end cover, and a retaining ring with a through hole is fixedly provided on the inner wall of the sleeve, and a steel ball for sealing the through hole is installed between the retaining ring and the end cover.

[0010] In order to prevent the sample from dripping, preferably the end cap or the sleeve is also provided with a sealing material for sealing the annular gap between the end cap and the sleeve.

[0011] In order to achieve multi-faceted control of the fluid, preferably, a first shut-off valve core for controlling the on-off of the main oil passage is provided on the main oil passage between the branch oil passage and the inlet joint.

[0012] Beneficial effects:

[0013] 1. The sealing device provided by the utility model can realize on-off control of the fluid, sampling control and self-sealing to prevent dripping, thereby avoiding the problem of residual dripping in the sampling tube and environmental pollution caused by the existing sampling valve.

[0014] 2. The utility model adopts an adaptive sealing sampling structure design. The pressure fluid can flow out for sampling only after overcoming the elastic force of the spring. When the pressure of the pressure fluid is less than or equal to the pressure of the spring, the fluid will be firmly locked inside the sealing device without causing leakage.

[0015] 3. The utility model solves the problem of sampling leakage based on the invention concept of adaptive sealing and provides a variety of self-sealing structures, which can be flexibly adopted according to the actual usage scenarios, including fixed structure design and detachable structure design, which can take into account and flexibly select reliability, long life and other aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative labor.

[0017] Figure 1 It is the axonometric drawing of the structure of the utility model.

[0018] Figure 2 yes Figure 1 Another visual structural axonometric drawing.

[0019] Figure 3 It is a top view of the utility model.

[0020] Figure 4 yes Figure 3 Full section view with center cut symbol AA.

[0021] Figure 5 yes Figure 4 Enlarged view of the structure of area B in the middle.

[0022] In the figure: 1-valve housing; 11-main oil channel; 12-branch oil channel; 2-inlet connector; 3-outlet connector; 4-first stop valve core; 5-second stop valve core; 6-sealing device; 61-sampling connector; 62-sampling oil channel; 63-casing; 64-clamping ring structure; 65-spring; 66-through hole; 67-retaining ring; 68-steel ball; 69-end cover. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0026] In the description of this application, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the application is usually placed when in use. It is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, if the terms "first", "second", etc. appear in the description of this application, they are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0027] In addition, if the terms "horizontal" or "vertical" appear in the description of this application, it does not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0029] Embodiment 1:

[0030] This embodiment provides a sampling cock anti-drip oil sealing device, the structure of which is shown in the attached manual. Figure 1-Figure 5 As shown, it includes a valve housing 1, on which an inlet joint 2 and an outlet joint 3 are provided, and a main oil channel 11 is provided inside the valve housing 1 for connecting the inlet joint 2 and the outlet joint 3, and the main oil channel 11 is also connected to a branch oil channel 12, and a sealing device 6 for sampling cock anti-drip oil is provided on the valve housing 1, and a second stop valve core 5 for controlling the connection between the main oil channel 11 and the sealing device 6 is also provided on the branch oil channel 12; the sealing device 6 includes a steel ball 68 that presses and seals the oil outlet through a spring 65.

[0031] Working principle description:

[0032] The inlet connector 2 and the outlet connector 3 are connected to the fluid pipeline respectively, and the fluid flows in the main oil channel 11. When sampling is required, the second stop valve core 5 is slowly opened, so that the fluid in the main oil channel 11 passes through the branch oil channel 12 in turn, and the second stop valve core 5 enters the sealing device 6. When the pressure of the fluid overcomes the pressure applied by the spring 65 on the steel ball 68, the fluid pushes the steel ball 68 to flow outward for sampling. When sampling is completed, the second stop valve core 5 is slowly closed, and the fluid in the sealing device 6 gradually reduces the pressure until the steel ball 68 blocks and seals the oil outlet again under the pulling force of the spring 65, thereby avoiding the problem of oil dripping after sampling.

[0033] Embodiment 2:

[0034] In order to better solve the problem of sample dripping, Figure 4 and Figure 5 As shown, this embodiment is further improved on the basis of embodiment 1, the sealing device 6 includes a sampling joint 61 detachably sealed and connected to the valve housing 1, the sampling joint 61 has a sampling oil passage 62 connected to the branch oil passage 12, a spring 65 is fixedly sleeved on the outer wall of the sampling joint 61, and the other end of the spring 65 is fixedly connected to an end cap 69 (not shown in the figure), and the end cap 69 presses the steel ball 68 on the oil outlet end face of the sampling oil passage 62 under the elastic force of the spring 65 to seal. This embodiment specifically clarifies the installation method of the spring 65, and the steel ball 68 is pressed on the oil outlet end face through the end cap 69. The principle of sampling is the same as that of embodiment 1, and will not be repeated here.

[0035] Embodiment 3:

[0036] In order to make the structure of the sealing device 6 replaceable and avoid the problem of replacing the entire cock valve due to damage to the valve body or the sealing device 6, which leads to increased costs, the present application also provides another structure of the sealing device 6. This embodiment is based on the embodiment 1 and further combined with the appendix of the specification. Figure 1-Figure 5 As shown, the sealing device 6 includes a sampling joint 61 which is detachably sealed and connected to the valve housing 1, and a sampling oil passage 62 which is connected to the branch oil passage 12 is provided in the sampling joint 61. The outer wall of the sampling joint 61 is also fixedly sleeved with a sleeve 63, and a clamping ring structure 64 is provided on the circumferential side wall of the sleeve 63. The clamping ring structure 64 is used to fix one end of a spring 65 sleeved on the outer wall of the sleeve 63, and an end cover 69 is fixed to the other end of the spring 65. A retaining ring 67 with a through hole 66 is fixedly provided on the inner wall of the sleeve 63, and a steel ball 68 for blocking the through hole 66 is installed between the retaining ring 67 and the end cover 69.

[0037] See also Figure 5 As shown, after the second stop valve core 5 is opened, the fluid in the main oil channel 11 passes through the branch oil channel 12 in turn, and the second stop valve core 5 enters the sampling oil channel 62 and is blocked by the steel ball 68. When the pressure of the fluid overcomes the pressure applied by the spring 65 on the steel ball 68, the fluid overcomes the obstruction of the steel ball 68 and flows outward for sampling; after the sampling is completed, the second stop valve core 5 is closed, so that the fluid no longer enters the sampling oil channel 62, so that under the pulling force of the spring 65, the steel ball 68 blocks the oil outlet again, so that the fluid no longer flows out, achieving the purpose of preventing dripping. Compared with the prior art, the structure of blocking the oil outlet after sampling is completed avoids the problem of residual sample outflow in the pipeline between the oil outlet and the second stop valve core 5.

[0038] In order to prevent the sample from dripping, in this embodiment, the end cap 69 or the sleeve 63 is also provided with a sealing material for sealing the annular gap between the end cap 69 and the sleeve 63. The sealing material can be made of suitable rubber, silicone rubber or other suitable existing materials, and made into a ring or other suitable structure with a connection at the end. The specific parameters can be reasonably selected by those skilled in the art according to the actual gap between the end cap 69 and the sleeve 63, so as to seal the annular gap between the end cap 69 and the sleeve 63, completely block the fluid, and prevent dripping.

[0039] In order to achieve multi-faceted control of the fluid, in this embodiment, a first shut-off valve core 4 for controlling the on-off of the main oil passage is provided on the main oil passage 11 between the branch oil passage 12 and the inlet joint 2 .

[0040] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A sampling cock anti-drip oil sealing device, comprising a valve housing (1), the valve housing (1) being provided with an inlet joint (2) and an outlet joint (3), and a main oil passage (11) provided inside the valve housing (1) for connecting the inlet joint (2) and the outlet joint (3), characterized in that: The main oil passage (11) is also connected to a branch oil passage (12); a sealing device (6) for sampling cock oil drip prevention is provided on the valve housing (1); a second stop valve core (5) for controlling the connection and disconnection between the main oil passage (11) and the sealing device (6) is also provided on the branch oil passage (12); the sealing device (6) includes a steel ball (68) for pressing and sealing the oil outlet through a spring (65).

2. The anti-drip oil sealing device for sampling cock according to claim 1, characterized in that: The sealing device (6) comprises a sampling joint (61) which is detachably sealed and connected to the valve housing (1); a sampling oil passage (62) which is connected to the branch oil passage (12) is provided inside the sampling joint (61); a spring (65) is fixedly sleeved on the outer wall of the sampling joint (61); the other end of the spring (65) is fixedly connected to an end cover (69); and the end cover (69) presses the steel ball (68) onto the outlet end face of the sampling oil passage (62) under the elastic force of the spring (65) to seal.

3. The anti-drip oil sealing device for sampling cock according to claim 1, characterized in that: The sealing device (6) comprises a sampling joint (61) which is detachably sealed and connected to the valve housing (1). The sampling joint (61) has a sampling oil passage (62) in communication with the branch oil passage (12). The outer wall of the sampling joint (61) is also fixedly sleeved with a sleeve (63). A clamping ring structure (64) is provided on the circumferential side wall of the sleeve (63). The clamping ring structure (64) is used to fix and connect one end of a spring (65) sleeved on the outer wall of the sleeve (63). The other end of the spring (65) is fixedly provided with an end cover (69). A retaining ring (67) with a through hole (66) is fixedly provided on the inner wall of the sleeve (63). A steel ball (68) for blocking the through hole (66) is installed between the retaining ring (67) and the end cover (69).

4. The anti-drip oil sealing device for sampling cock according to claim 3, characterized in that: The end cover (69) or the sleeve (63) is also provided with a sealing material for sealing the annular gap between the end cover (69) and the sleeve (63).

5. The anti-drip oil sealing device for sampling cock according to claim 1, characterized in that: A first stop valve core (4) for controlling the on-off of the main oil passage is provided at a position between the branch oil passage (12) and the inlet joint (2) on the main oil passage (11).

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