Quick connecting device for online verification of safety valve

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By designing a quick connection device including a tie rod, a first ring body and a second ring body, the problem of cumbersome connection of valve stems of different specifications and sizes in the prior art is solved, and quick and simple connection and disconnection are achieved, and the improvement of The efficiency of safety valve online verification.

CN119413449APending Publication Date: 2025-02-11WUJIANG DONGWU MASCH CO LTD +1

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Patent Information

Application Number: CN202411854467.2
Authority / Receiving Office: CN · China
Patent Type: Applications(China)
Current Assignee / Owner
Filing Date: 2024-12-16
Publication Date: 2025-02-11

AI Technical Summary

Technical Problem

The existing safety valve online verification device requires the manufacture of suitable connecting devices in advance to adapt to valve stems of different specifications and sizes, and the manufacturing and replacement process is cumbersome.

Method used

A quick connection device including a tie rod, a first ring body and a second ring body is designed, and connected to the valve stem through the structure of the ring, and the ring sheet and elastic member are used to achieve rapid separation and connection, and to adapt to valve stems of different specifications and sizes.

Benefits of technology

It realizes quick connection and disconnection of valve stems of different specifications and sizes, simplifies operation, reduces costs and improves verification efficiency.

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Abstract

The invention relates to a quick connecting device for on-line verification of a safety valve, which comprises a pull rod, a first ring body and a second ring body, and is characterized in that the pull rod is used for being connected with on-line verification equipment; the first ring body is used for clamping a valve rod of the safety valve, one end of the first ring body is matched with one end of the pull rod, and the other end of the first ring body forms a clamping end; the second ring body is used for locking the clamping end of the first ring body, and the second ring body is arranged outside the first ring body in a sleeving mode. The ring structure is adopted to be connected with the valve rod, connection of valve rods of different specifications and sizes can be met, the number of parts is small, the structure is simple, operation is convenient, and cost is low.

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Description

Technical Field

[0001] The invention relates to the technical field of valves, and in particular to a quick connection device for online verification of a safety valve. Background Art

[0002] According to the relevant special equipment safety technical specifications, safety valves need to be calibrated every year. At present, there are two ways to calibrate safety valves: offline calibration and online calibration. Offline calibration is to remove the safety valve from the pipeline or system and take it to a special calibration bench for calibration. At this time, the system needs to be stopped; online calibration is to be performed directly on the system or pipeline without removing the safety valve. Compared with offline calibration, online calibration does not require the removal of the safety valve, avoiding system shutdown. Therefore, on some equipment or systems that cannot be stopped, safety valve calibration adopts online calibration.

[0003] The online calibration of safety valves mainly uses a dedicated online calibration device for safety valves to connect with the valve stem of the safety valve. During calibration, the online calibration device for safety valves will pull up the valve stem to help the safety valve open. Since the valve stem specifications and sizes of different safety valve manufacturers are inconsistent, it is necessary to manufacture a suitable connecting device in advance to connect the valve stem of the safety valve with the online calibration device, and its manufacture and replacement are relatively cumbersome. Summary of the invention

[0004] The object of the present invention is to provide a quick connection device for online verification of a safety valve, which can be used for valve stems of different specifications and sizes.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A quick connection device for online verification of a safety valve, comprising:

[0007] Pull rod: used to connect with online calibration equipment;

[0008] The first ring body is used to clamp the valve stem of the safety valve, one end of the first ring body cooperates with one end of the pull rod, and the other end of the first ring body forms a clamping end;

[0009] The second ring body is used to lock the clamping end of the first ring body, and the second ring body is sleeved on the outside of the first ring body.

[0010] Preferably, in the above technical solution, the first ring body comprises a plurality of ring pieces, and the plurality of ring pieces together enclose the first ring body.

[0011] Further preferably, a hole is provided on the side end surface of the ring piece, and an elastic member is arranged in the hole. When a plurality of the ring pieces are enclosed, the elastic member on one of the two butted ring pieces abuts against the side end surface of the other ring piece, or the elastic members on the two butted ring pieces abut against each other. When the second ring body is loosened, the elastic member can allow the ring pieces to be quickly separated.

[0012] Further preferably, the first ring body includes a first ring piece and a second ring piece, and the first ring piece and the second ring piece are semicircular rings. The more ring pieces there are, the more troublesome it is to splice them, and two ring pieces are preferred.

[0013] Preferably, in the above technical solution, a cushion layer is provided on the inner circumferential surface of the clamping end of the first ring body, and the cushion layer is made of copper or a flexible material. The cushion layer can better clamp the valve stem to avoid slipping.

[0014] Preferably, the above technical solution is that a first inner recess is provided on the inner circumferential surface of one end of the first ring body, and a convex portion is provided at one end of the pull rod. When one end of the first ring body cooperates with one end of the pull rod, one end of the pull rod extends into one end of the first ring body, and the convex portion of the pull rod abuts against the first inner recess of the first ring body. Through the cooperation of the recess and the convex portion, the cooperation of one end of the first ring body with one end of the pull rod can be achieved, and the first ring body is driven by pulling the pull rod.

[0015] Preferably, in the above technical scheme, an outer boss is arranged on the outer circumferential surface of one end of the first ring body, and the end face of the outer boss of the first ring body extends obliquely from one end to the other end; an inner recess is arranged on the inner circumferential surface of one end of the second ring body, and the end face of the inner recess of the second ring body matches the end face of the outer boss of the first ring body, and the end face of the inner recess of the second ring body slides on the end face of the outer boss of the first ring body to lock or release the clamping end of the first ring body, and through the cooperation of the outer boss and the inner recess of the inclined end face, when the pull rod is pulled, the second ring body can pull the clamping end of the first ring body tighter and tighter.

[0016] Preferably, in the above technical solution, the device further comprises a connecting rod, one end of which cooperates with the clamping end of the first ring body, and the other end of which is used to connect to the valve stem, and valve stems of different specifications and sizes can be connected through the connecting rod.

[0017] Further preferably, a connecting hole is formed on the end surface of the other end of the connecting rod.

[0018] Further preferably, a second inner recess is provided on the inner circumferential surface of the clamping end of the first ring body, and a convex portion is provided at one end of the connecting rod. When one end of the connecting rod cooperates with the clamping end of the first ring body, the one end of the connecting rod extends into the clamping end of the first ring body, and the convex portion of the connecting rod abuts against the second inner recess of the clamping end.

[0019] Preferably, in the above technical solution, the device further comprises a fastener, which is connected to the second ring body and can press inwardly against the clamping end of the first ring body, and the first ring body can be further locked by the fastener.

[0020] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0021] The present invention adopts a ring structure to connect with the valve stem, which can meet the connection requirements of valve stems of different specifications and sizes, has a small number of parts, a simple structure, convenient operation and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Attached Figure 1 is a cross-sectional schematic diagram of embodiment 1;

[0023] Attached Figure 2 is a three-dimensional schematic diagram of the first ring body;

[0024] Attached Figure 3 is a top view schematic diagram of the first ring body;

[0025] Attached Figure 4 For attachment Figure 3 Middle AA section view;

[0026] Attached Figure 5 For attachment Figure 3 Middle BB cutaway diagram;

[0027] Attached Figure 6 It is a cross-sectional schematic diagram of the second embodiment.

[0028] In the above attached figure:

[0029] 1. Pull rod; 10. convex part;

[0030] 2. first ring body; 20. clamping end; 200. second inner recess; 21. first inner recess; 22. outer boss; 23. cushion layer; 24. ring piece; 240. hole;

[0031] 3. second ring body; 30. inner concave portion; 51. connecting hole;

[0032] 4. Fasteners;

[0033] 5. Connector; 50. Projection;

[0034] 6. Valve stem. DETAILED DESCRIPTION

[0035] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0037] Embodiment 1

[0038] like Figure 1 The quick connection device for online verification of a safety valve shown in the figure comprises a pull rod 1, a first ring body 2, a second ring body 3, and a fastener 4. Among them:

[0039] The pull rod 1 is used to connect with the online verification device. In this embodiment: one end of the pull rod 1 cooperates with the first ring body, and the other end is connected to the online verification device. Among them: a convex portion 10 is provided at one end of the pull rod 1, and the convex portion 10 is used to cooperate with the first ring body 2, and the cross section of the entire pull rod 1 is T-shaped.

[0040] like Figure 2 , 3 As shown: the first ring body 2 is used to clamp the valve stem of the safety valve, one end of the first ring body 2 cooperates with one end of the pull rod 1, and the other end of the first ring body 2 forms a clamping end 20.

[0041] A first inner recess 21 is provided on the inner circumferential surface of one end of the first ring body 2. When one end of the first ring body 2 cooperates with one end of the pull rod 1, one end of the pull rod 1 extends into one end of the first ring body 2, and the convex portion 10 of the pull rod 1 abuts against the first inner recess 21 of the first ring body 2. In this way, through the cooperation of the concave portion and the convex portion, the cooperation of one end of the first ring body 2 with one end of the pull rod 1 can be achieved, and the first ring body 2 can be driven by pulling the pull rod 1.

[0042] An external boss 22 is provided on the outer peripheral surface of one end of the first ring body 2, and the end face of the external boss 22 of the first ring body 2 extends obliquely from one end to the other end, that is, the end face of the external boss 22 of the first ring body 2 is an inclined surface, and the external boss 22 of the first ring body 2 is used to cooperate with the second ring body 3 to lock the clamping end of the first ring body 2.

[0043] In a preferred implementation of this embodiment: a cushion layer 23 is provided on the inner circumference of the clamping end 20 of the first ring body 2. The cushion layer 23 is made of copper or a flexible material. The cushion layer 23 can better clamp the valve stem to prevent slipping and damage to the valve stem. Figure 4 shown.

[0044] In this embodiment: the first ring body 2 includes a plurality of ring pieces 24, and the plurality of ring pieces 24 together enclose the first ring body 2. Specifically: taking two ring pieces 24 as an example, namely the first ring piece and the second ring piece, the two ring pieces 24 are symmetrical semicircular rings, and of course three ring pieces can also be included, and the three ring pieces are all 120°, or more, but the more the number of ring pieces 24, the more troublesome it is to splice, and two ring pieces 24 are preferred. The ring pieces 24 can be separated from each other, and can be used to match valve stems of different diameters.

[0045] In a preferred implementation manner of the present embodiment: a hole 240 is provided on the side end face of the ring piece 24, and an elastic member (not shown in the figure) is provided in the hole 240. When the two ring pieces 24 are enclosed, the elastic member on one of the two butted ring pieces 24 abuts against the side end face of the other ring piece 24, that is, only the side end face of one of the two butted ring pieces 24 is connected with the elastic member; or the elastic members on the two butted ring pieces 24 abut against each other, that is, the side end faces of the two butted ring pieces 24 are both connected with the elastic members. In this way, when the second ring body 3 is loosened, the elastic force of the elastic member can automatically allow the ring pieces 24 to separate quickly, thereby disengaging from the valve stem, such as Figure 5 shown.

[0046] The second ring body 3 is used to lock the clamping end 20 of the first ring body 2 , and the second ring body 3 is sleeved on the outside of the first ring body 2 .

[0047] An inner recess 30 is provided on the inner circumferential surface of one end of the second ring body 3, and the end face of the inner recess 30 of the second ring body 3 matches the end face of the outer boss 22 of the first ring body 2. The end face of the inner recess 30 of the second ring body 3 slides on the end face of the outer boss 22 of the first ring body 2 to lock or loosen the clamping end 20 of the first ring body 2. Through the cooperation of the outer boss 22 and the inner recess 30 of the inclined end face, when the pull rod 1 is pulled, the second ring body 3 can pull the clamping end 20 of the first ring body 2 tighter and tighter.

[0048] The fastener 4 is connected to the second ring body 3 and can be pressed against the clamping end 20 of the first ring body 2 inwardly, and the first ring body 2 can be further locked by the fastener 4. In this embodiment, the fastener 4 is made of two screws, which are threadedly connected to the second ring body 3 and tighten the clamping end 20 of the first ring body 2 by turning the screws.

[0049] When connecting the valve stem, move the second ring body 3 upward to open the two internal ring pieces 24, insert the valve stem between the two ring pieces 24, move the second ring body 3 downward, and through the cooperation of the outer boss 22 and the inner recess 30 of the inclined end face, the second ring body 3 makes the two ring pieces 24 clamp the valve stem; at the same time, the fastener 4 can be tightened to further tighten the two ring pieces 24 to complete the connection of the valve stem. During online verification: the pull rod 1 is connected to the online verification equipment, and the pull rod 1 is pulled to pull the valve stem to open the safety valve. Through the cooperation of the outer boss 22 and the inner recess 30 of the inclined end face, pulling the pull rod 1 can make the second ring body 3 tighten the clamping end 20 of the first ring body 2 more and more, so as to prevent the valve stem from falling off.

[0050] The quick connection device of this embodiment can be used for valve stems of different specifications and sizes, and the operation is quick and convenient.

[0051] Embodiment 2

[0052] like Figure 6 As shown: the structure of this embodiment is basically the same as that of the first embodiment, except that: the device also includes a connecting rod 5, one end of the connecting rod 2 cooperates with the clamping end 20 of the first ring body 2, and the other end of the connecting rod 5 is used to connect to the valve stem, and valve stems of different specifications and sizes can be connected through the connecting rod 5.

[0053] In this embodiment: the inner circumference of the clamping end 20 of the first ring body 2 is provided with a second inner concave portion 200, and one end of the connecting rod 5 is provided with a convex portion 50. When one end of the connecting rod 5 is matched with the clamping end 20 of the first ring body 2, one end of the connecting rod 5 extends into the clamping end 20 of the first ring body 2, and the convex portion 50 of the connecting rod 5 abuts against the second inner concave portion 200 of the clamping end 20, so that the connecting rod 5 can be prevented from falling off the first ring body 2. In the figure: the end surface of the second inner concave portion 200 of the clamping end 20 of the first ring body 2 and the end surface of the convex portion 50 are also inclined surfaces.

[0054] A connecting hole 51 is formed on the end surface of the other end of the connecting rod 5 .

[0055] When the valve stem has a threaded end, the valve stem can be directly screwed into the connecting hole 51 of the connecting rod 5 to complete the connection with the valve stem.

[0056] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A quick connection device for online verification of a safety valve, characterized in that: include: Pull rod: used to connect with online calibration equipment; The first ring body is used to clamp the valve stem of the safety valve, one end of the first ring body cooperates with one end of the pull rod, and the other end of the first ring body forms a clamping end; The second ring body is used to lock the clamping end of the first ring body, and the second ring body is sleeved on the outside of the first ring body.

2. The quick connection device for online verification of a safety valve according to claim 1, characterized in that: The first ring body includes a plurality of ring pieces, and the plurality of ring pieces together enclose the first ring body.

3. The quick connection device for online verification of a safety valve according to claim 2 is characterized in that: A hole is provided on the side end surface of the ring piece, and an elastic member is arranged in the hole. When a plurality of the ring pieces are enclosed, the elastic member on one of the two butted ring pieces abuts against the side end surface of the other ring piece, or the elastic members on the two butted ring pieces abut against each other.

4. The quick connection device for online verification of a safety valve according to claim 2, characterized in that: The first ring body comprises a first ring piece and a second ring piece, and the first ring piece and the second ring piece are semicircular rings.

5. The quick connection device for online verification of a safety valve according to claim 1 or 2, characterized in that: A cushion layer is arranged on the inner circumferential surface of the clamping end of the first ring body, and the material of the cushion layer is copper or a flexible material.

6. The quick connection device for online verification of a safety valve according to claim 1 or 2, characterized in that: A first recessed portion is provided on the inner circumferential surface of one end of the first ring body, and a convex portion is provided at one end of the pull rod. When one end of the first ring body cooperates with one end of the pull rod, one end of the pull rod extends into one end of the first ring body, and the convex portion of the pull rod abuts against the first recessed portion of the first ring body.

7. The quick connection device for online verification of a safety valve according to claim 1 or 2, characterized in that: An outer boss is arranged on the outer circumferential surface of one end of the first ring body, and the end face of the outer boss of the first ring body extends obliquely from one end to the other end; an inner recess is arranged on the inner circumferential surface of one end of the second ring body, and the end face of the inner recess of the second ring body matches the end face of the outer boss of the first ring body, and the end face of the inner recess of the second ring body slides on the end face of the outer boss of the first ring body to lock or release the clamping end of the first ring body.

8. The quick connection device for online verification of a safety valve according to claim 1, characterized in that: The device also includes a connecting rod, one end of which cooperates with the clamping end of the first ring body, and the other end of which is used to connect with the valve stem; a connecting hole is opened on the end surface of the other end of the connecting rod.

9. The quick connection device for online verification of a safety valve according to claim 8, characterized in that: A second inner recess is provided on the inner circumferential surface of the clamping end of the first ring body, and a convex portion is provided at one end of the connecting rod. When the one end of the connecting rod cooperates with the clamping end of the first ring body, the one end of the connecting rod extends into the clamping end of the first ring body, and the convex portion of the connecting rod abuts against the second inner recess of the clamping end.

10. The quick connection device for online verification of a safety valve according to claim 1 or 8, characterized in that: The device also includes a fastener, which is connected to the second ring body and can be pressed inwardly against the clamping end of the first ring body.