Linkage mechanism of sampler

Abstract

The utility model provides a sampler linkage mechanism which comprises a shell, an elastic rod, a release rod and a steel ball, the elastic rod, the release rod and the steel ball are sleeved in the shell, the elastic rod is provided with a limiting hole for placing the steel ball, the release rod is sleeved in the elastic rod, the release rod is of a rod-shaped structure with the outer diameter gradually changing, and the steel ball is matched with different outer diameters outside the release rod. And the elastic rod and the release rod can keep relatively static or relatively slide. According to the sampler linkage mechanism disclosed by the utility model, two or more samplers can be controlled by adopting a single clock controller, so that the sampler linkage mechanism is convenient to operate, the cost is saved, the working efficiency is improved, and the operation risk is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of oil extraction technology, and in particular relates to a sampler linkage mechanism. Background Technology

[0002] In the oil extraction industry, it is essential to constantly monitor changes in water cut in oil wells to understand their production capacity and fluid output patterns. Therefore, high-pressure physical property sampling and analysis of downhole oil and gas are necessary. Currently, the traditional connection method for high-pressure physical property samplers is a single clock controller plus a single sampler. Well sampling typically uses 2-3 samplers, requiring 2-3 clock controllers. This connection is relatively cumbersome, increases the length of the tool string, and consequently, increases the height of the blowout preventer, thus increasing operational risks and costs. Utility Model Content

[0003] In view of this, the present invention aims to propose a sampler linkage mechanism to solve the problems of cumbersome connection methods, low work efficiency, high operational risks and costs of existing samplers.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0005] A sampler linkage mechanism includes a housing and a spring rod, a release rod, and a steel ball sleeved inside it. The spring rod has a limiting hole for placing the steel ball. The release rod is sleeved inside the spring rod. The release rod is a rod-shaped structure with a gradually changing outer diameter. The steel ball and the release rod have different outer diameters, so that the spring rod and the release rod can remain relatively stationary or slide relatively.

[0006] Furthermore, the spring rod includes an integrally formed spring rod body, the spring rod body has an elongated through hole inside, the elongated through hole is used for slidingly connecting the release rod, and the spring rod body also has a limiting hole, which is a stepped hole.

[0007] Furthermore, the number of limiting holes is multiple, and they are evenly distributed circumferentially.

[0008] Furthermore, the shell is a stepped hollow cylindrical structure.

[0009] Furthermore, the release rod includes an integrally formed limiting part, a middle part, and an end part, and the outer diameters of the three parts gradually decrease. In the normal state, the limiting part is in contact with the steel ball, so that the release rod and the spring rod remain relatively stationary; in the working state, the middle part is in contact with the steel ball, so that the release rod and the spring rod can slide relative to each other.

[0010] Furthermore, the outer diameter of the steel ball is not less than 5 mm.

[0011] Furthermore, the housing, spring rod, and release rod are all made of 2Cr13 material.

[0012] Compared with the prior art, the sampler linkage mechanism of this utility model has the following advantages:

[0013] (1) The sampler linkage mechanism described in this utility model can control two or more samplers with a single clock controller, which is convenient to operate, greatly improves work efficiency and reduces operating costs.

[0014] (2) The sampler linkage mechanism described in this utility model has a simple structure and low manufacturing cost. Attached Figure Description

[0015] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0016] Figure 1 This is a cross-sectional view of the sampler linkage mechanism before the first and second samplers are closed, as described in this embodiment of the utility model.

[0017] Figure 2 for Figure 1 Enlarged view of section A;

[0018] Figure 3 This is a schematic diagram of the interior of the sampler linkage mechanism housing according to an embodiment of the present utility model;

[0019] Figure 4 This is a schematic diagram of the release lever described in an embodiment of the present utility model;

[0020] Figure 5 This is a schematic diagram showing the first sampler and the second sampler being simultaneously turned off according to an embodiment of the present invention.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1-Spring rod; 11-Spring rod body; 12-Limiting hole; 2-Release rod; 21-Limiting part; 22-Middle part; 23-End; 3-Steel ball; 4-Housing shell; 5-Second spring; 6-Second sealing shaft; 7-First sealing shaft; 8-First spring. Detailed Implementation

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0024] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0025] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] A sampler linkage mechanism, such as Figures 1 to 5 As shown, the device includes a housing 4 and a spring rod 1, a release rod 2, and a steel ball 3 that are sleeved inside it. The spring rod 1 is provided with a limiting hole 12 for placing the steel ball 3. The release rod 2 is slidably sleeved inside the spring rod 1. The release rod 2 is a rod-shaped structure with a gradually changing outer diameter. The outer diameter of the steel ball and the limiting part 21 of the release rod 2 are matched to form a limiting state, so that the spring rod 1 and the release rod 2 can remain relatively stationary.

[0028] The spring rod 1 includes an integrally formed spring rod body 11. The spring rod body 11 has a through hole inside, which is used to slide and release the rod 2. The spring rod body 11 also has a limiting hole 12, which is a stepped hole.

[0029] In one or more embodiments, the number of limiting holes 12 is multiple and they are evenly distributed circumferentially.

[0030] Shell 4 is a stepped hollow cylindrical structure.

[0031] The release lever 2 is a one-piece rod-shaped structure, including an integrally formed limiting part 21, a middle part 22, and an end part 23, with the inner diameters of the three gradually decreasing. In the normal state, the limiting part 21 is in contact with the steel ball 3, keeping the release lever 2 and the spring lever 1 relatively stationary. In the working state, the middle part 22 is in contact with the steel ball 3, allowing the release lever 2 and the spring lever 1 to slide relative to each other.

[0032] In one or more embodiments, the outer diameter of the steel ball 3 is not less than 5 mm.

[0033] The housing 4, spring rod 1, and release rod 2 are all made of 2Cr13.

[0034] The working principle of a sampler linkage mechanism is as follows:

[0035] To make it easier to understand, let's take a clock timer and two samplers as an example:

[0036] like Figure 2 and Figure 5 As shown, the sampler linkage mechanism is installed between the first sampler and the second sampler. The spring rod 1 acts as a stop against the second sampler. At this time, the steel ball 3 contacts the release rod limiting part 21, and the steel ball 3 is restricted at the stepped hole inside the housing. At this time, both the spring rod 1 and the release rod 2 are in a stationary state. When the clock reaches the set time, the first sampler begins to close. The first sealing shaft 7 of the first sampler moves to the left to close under the action of the first spring 8. The conical O-ring of the first sampler performs sealing, and at the same time, the first sealing shaft 7... When the release rod 2 moves to the left, the first sealing shaft 7 is threadedly connected to the release rod 2. At this time, the steel ball 3 changes from contacting the limiting part 21 to contacting the middle part 22. Since the outer diameter of the middle part 22 is smaller than the outer diameter of the limiting part 21, the steel ball 3 loses its limiting function. The release rod 2 and the spring rod 1 can slide relative to each other. The spring rod 1 no longer acts as a resisting force against the second sealing shaft 6 of the second sampler. Under the elastic force of the second spring 5, the second sealing shaft 6 can push the spring rod 1 to the right, so that the second sampler closes at the same time.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sampler linkage mechanism, characterized in that: The device includes a housing and a spring rod, a release rod, and a steel ball fitted inside it. The spring rod includes an integrally formed spring rod body with a through hole inside for slidingly engaging the release rod. The spring rod body also has a limiting hole, which is a stepped hole. The steel ball is placed in the limiting hole. The release rod includes an integrally formed limiting part, a middle part, and an end part, with the outer diameters of the three parts gradually decreasing. In the normal state, the limiting part is in contact with the steel ball; in the working state, the limiting part is in contact with the middle part.

2. The sampler linkage mechanism according to claim 1, characterized in that: There are multiple limiting holes, which are evenly distributed circumferentially.

3. The sampler linkage mechanism according to claim 1, characterized in that: The shell is a stepped hollow cylindrical structure.

4. The sampler linkage mechanism according to claim 1, characterized in that: The outer diameter of the steel ball shall not be less than 5 mm.

5. The sampler linkage mechanism according to claim 1, characterized in that: The housing, spring rod, and release rod are all made of 2Cr13.

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