Quick connection type adapter assembly and pilot-operated type surge relief valve checking assembly

Abstract

The utility model discloses a quick-connection type adapter assembly and a pilot-operated type surge relief valve check assembly, the quick-connection type adapter assembly comprises a movable joint, an adapter and two end joints, the movable joint and the adapter are connected in series between the two end joints, and the movable joint and the adapter are connected in series between the two end joints. And the movable joint is in reverse threaded connection corresponding to the end joint, so that the quick-connection type adapter assembly can be directly connected with a verification interface of the pilot-operated type surge relief valve, and the hydraulic hose can be prevented from rotating to be wound when the quick-connection type adapter assembly is tightened to be mounted or tightened to be dismounted.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic joints, and in particular relates to a quick-connect conversion joint component and a pilot-operated water hammer pressure relief valve calibration assembly. Background Art

[0002] The long-distance natural gas pipeline needs to use Daniel pilot-operated water hammer pressure relief valve to prevent pipeline damage caused by water hammer. At present, according to the needs of safe operation, the setting value of Daniel pilot-operated water hammer pressure relief valve must be calibrated every six months. The interface thread of the ENERPAC manual hydraulic pump currently used for calibration is 3 / 8NPT, while the interface thread of the on-site Daniel water hammer pressure relief valve calibration is 1 / 4NPT. Therefore, a conversion joint assembly is required for conversion. The conversion joint assembly used by the original ENERPAC manual hydraulic pump has the following problems: 1. The original conversion joint assembly is used for the calibration of water hammer pressure relief valves for the Lanzhengchang, Lanchengyu and Lancheng pipelines at the same time. The design is complex and the length design of each component is unreasonable, such as Figure 1 As shown, it includes three connectors, namely connector A, connector B and connector C. The three connectors are of different lengths, and the wrench cannot be clamped tightly, which may easily cause poor installation sealing. Moreover, when a certain connector is turned, the other connectors will rotate synchronously (the head ends of connector A, connector B and connector C are all external thread interfaces, the tail ends of connector A and connector B are both internal thread interfaces, and the tail end of connector C is also an external thread interface); 2. All components are connected by fixed threads. When connected to the water hammer pressure relief valve pressure pipe, there is a problem that the conversion joint, hydraulic hose, and hydraulic pump rotate with the thread as a whole. During operation, one person must tighten the thread with a wrench, and the other person cooperates to rotate the pump on the spot. The order is reversed during disassembly, and there is a risk of damage to the hydraulic pipe, equipment and personal injury. Utility Model Content

[0003] In order to achieve the above-mentioned purpose, one of the purposes of the utility model is to provide a quick-connect conversion joint assembly which has a simple structure, is easy to twist, and can rotate by itself to prevent winding when rotating.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the utility model is as follows: a quick-connect conversion joint assembly, including a flexible joint, a conversion joint and two end joints, the flexible joint and the conversion joint are connected in series between the two end joints, and the flexible joint is reversely threadedly connected to the end joints.

[0005] The beneficial effect of the above technical solution is that the quick-connect conversion joint assembly can be used to directly connect to the calibration interface of the pilot-operated water hammer pressure relief valve, and the hydraulic hose can be prevented from rotating and wrapping when being tightened for installation or removal.

[0006] In the above technical solution, the two end joints are respectively the first end joint and the second end joint, the head end of the flexible joint is connected to the tail end of the first end joint, the head end of the conversion joint is connected to the tail end of the flexible joint, and the tail end of the conversion joint is connected to the head end of the second end joint.

[0007] The beneficial effect of the above technical solution is that the rotation margin can be provided by the flexible joint.

[0008] In the above technical solution, the head end of the first end joint is a 1 / 4NPT thread.

[0009] The beneficial effect of the above technical solution is that the first end joint can be threadedly connected to the calibration interface of the pilot-operated water-surge relief valve.

[0010] The head end of the flexible joint in the above technical solution is an M20*1.5 thread.

[0011] The beneficial effect of the above technical solution is that the movable joint can be better matched with the first end joint.

[0012] The head end of the conversion joint described in the above technical solution is a 1 / 4NPT thread.

[0013] The beneficial effect of the above technical solution is that it enables a better threaded connection with the tail end of the flexible joint.

[0014] In the above technical solution, the head end of the second end joint is a 3 / 8NPT thread.

[0015] The beneficial effect of the above technical solution is that it enables better connection with the tail end of the conversion joint.

[0016] A second object of the utility model is to provide a pilot-operated water-surge pressure relief valve calibration assembly which has a simple structure and is convenient to be connected and disconnected from the calibration interface of the pilot-operated water-surge pressure relief valve.

[0017] In order to achieve the above-mentioned purpose, another technical solution of the utility model is as follows: a pilot-operated water-surge pressure relief valve calibration assembly, comprising a manual hydraulic pump, a hydraulic hose and the quick-connect conversion joint assembly as described above, one end of the hydraulic hose is connected to the oil outlet of the manual hydraulic pump, the other end of the hydraulic hose is connected to the tail end of the second end joint, and the head end of the first end joint is connected to the calibration interface of the pilot-operated water-surge pressure relief valve.

[0018] The beneficial effect of the above technical solution is that when the first end joint is connected or disconnected from the calibration interface, the tail end of the first end joint and the head end of the live joint can always maintain reverse rotation, and there is no need to worry about the problem of hydraulic hose winding.

[0019] The hydraulic hose described in the above technical solution is a high-pressure resistant hose.

[0020] The beneficial effect of the above technical solution is that it has good pressure resistance.

[0021] Both ends of the hydraulic hose described in the above technical solution are corrugated.

[0022] The beneficial effect of the above technical solution is that the end of the hydraulic hose is resistant to bending and not prone to cracking. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of an existing quick-connect conversion joint assembly;

[0024] Figure 2 This is a schematic structural diagram of the quick-connect conversion joint assembly described in Example 1 of the utility model;

[0025] Figure 3 This is a structural schematic diagram of the pilot-operated water hammer pressure relief valve calibration assembly described in Example 2 of the utility model.

[0026] In the figure: 1. quick-connect conversion joint assembly; 11. flexible joint; 12. conversion joint; 13. end joint; 13a. first end joint; 13b. second end joint; 14. joint A; 15. joint B; 16. joint C; 2. manual hydraulic pump; 3. hydraulic hose; 4. pilot-operated water hammer pressure relief valve. DETAILED DESCRIPTION

[0027] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention. The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. According to the following description and claims, the advantages and features of the present invention will be more clearly described. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0028] Example 1

[0029] like Figure 2 As shown, this embodiment provides a quick-connect conversion joint assembly, including a flexible joint 11, a conversion joint 12 and two end joints 13, wherein the flexible joint 11 and the conversion joint 12 are connected in series between the two end joints 13, and the flexible joint 11 is reversely threadedly connected to the end joints 13, so that the quick-connect conversion joint assembly can be used to directly connect to the calibration interface of the pilot water hammer pressure relief valve 4, and the hydraulic hose can be prevented from rotating to a wrapping connection whether it is tightened for installation or tightened for removal.

[0030] In the above technical solution, the two end joints 13 are respectively the first end joint 13a and the second end joint 13b, the head end of the flexible joint 11 is connected to the tail end of the first end joint 13a, the head end of the conversion joint 12 is connected to the tail end of the flexible joint 11, and the tail end of the conversion joint 12 is connected to the head end of the second end joint 13b, so that the rotation margin can be provided by the flexible joint.

[0031] In the above technical solution, the head end of the first end connector 13a is a 1 / 4NPT thread, so that the first end connector can be threadedly connected to the calibration interface of the pilot water hammer relief valve 4.

[0032] The head end of the flexible joint 11 in the above technical solution is an M20*1.5 thread, so that the flexible joint can be better matched with the first end joint.

[0033] The head end of the conversion joint 12 in the above technical solution is a 1 / 4NPT thread, so that it can be better threadedly connected with the tail end of the flexible joint.

[0034] In the above technical solution, the head end of the second end connector 13b is a 3 / 8NPT thread, so that it can be better connected with the tail end of the conversion connector.

[0035] In this embodiment, the head end and the tail end of the second end joint are both external threaded interfaces, the tail ends of the first end joint, the flexible joint and the conversion joint are all internal threaded interfaces, the second end joint, the conversion joint and the flexible joint all remain connected, and the first end joint is reversely connected to the flexible joint, the internal threaded interface at the tail end of the first end joint is threadedly matched with the head end of the flexible joint, the tail end of the flexible joint is threadedly matched with the head end of the conversion joint, and the tail end of the conversion joint is threadedly matched with the head end of the second end joint.

[0036] Example 2

[0037] like Figure 3 As shown, this embodiment provides a pilot-operated water-surge relief valve calibration assembly, including a manual hydraulic pump 2, a hydraulic hose 3 and the quick-connect conversion joint assembly 1 as described above, one end of the hydraulic hose 3 is communicated with the oil outlet of the manual hydraulic pump 2, the other end of the hydraulic hose 3 is connected to the tail end of the second end joint 13b, and the head end of the first end joint 13a is connected to the calibration interface of the pilot-operated water-surge relief valve 4, so that when the first end joint is connected or disconnected from the calibration interface, the tail end of the first end joint and the head end of the live joint can always keep rotating in opposite directions, and there is no need to worry about the problem of hydraulic hose winding.

[0038] The hydraulic hose 3 described in the above technical solution is a high-pressure hose, which has a good pressure resistance effect.

[0039] Both ends of the hydraulic hose 3 in the above technical solution are corrugated, so that the ends of the hydraulic hose are resistant to bending and not easy to crack.

[0040] In the initial state of this embodiment, the first end joint is independent. When the first end joint needs to be connected to the verification interface of the pilot water hammer pressure relief valve, the head end of the first end joint is aligned with the verification interface, and the head end of the flexible joint is aligned with the tail end of the first end joint. The flexible joint is fixed with vise pliers, and the first end joint is twisted. At this time, both ends of the first end joint will be connected to the verification interface and the flexible joint. When the first end joint is rotated in the opposite direction, the first end joint will be disconnected from the verification interface and / or the joint at the same time, and the hydraulic hose will not be wrapped around the pipe.

[0041] The above description is only a preferred embodiment of the utility model and does not limit the utility model in any form. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings of the specification and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.

Claims

1. A quick-connect conversion joint assembly, characterized in that: The invention comprises a flexible joint (11), a conversion joint (12) and two end joints (13); the flexible joint (11) and the conversion joint (12) are connected in series between the two end joints (13), and the flexible joint (11) is reversely threadedly connected to the corresponding end joints (13).

2. The quick-connect conversion joint assembly according to claim 1, characterized in that: The two end joints (13) are respectively a first end joint (13a) and a second end joint (13b); the head end of the flexible joint (11) is connected to the tail end of the first end joint (13a); the head end of the conversion joint (12) is connected to the tail end of the flexible joint (11); and the tail end of the conversion joint (12) is connected to the head end of the second end joint (13b).

3. The quick-connect conversion joint assembly according to claim 2, characterized in that: The head end of the first end connector (13a) is a 1 / 4 NPT thread.

4. The quick-connect conversion joint assembly according to claim 2, characterized in that: The head end of the flexible joint (11) is an M20*1.5 thread.

5. The quick-connect conversion joint assembly according to claim 2, characterized in that: The head end of the conversion joint (12) is a 1 / 4 NPT thread.

6. The quick-connect conversion joint assembly according to claim 2, characterized in that: The head end of the second end connector (13b) is a 3 / 8 NPT thread.

7. A pilot-operated water hammer relief valve calibration assembly, characterized in that: It comprises a manual hydraulic pump (2), a hydraulic hose (3) and a quick-connect conversion joint assembly (1) as described in any one of claims 2 to 6, wherein one end of the hydraulic hose (3) is connected to the oil outlet of the manual hydraulic pump (2), the other end of the hydraulic hose (3) is connected to the tail end of the second end joint (13b), and the head end of the first end joint (13a) is connected to the calibration interface of the pilot water hammer pressure relief valve (4).

8. The pilot operated water hammer relief valve calibration assembly according to claim 7, characterized in that: The hydraulic hose (3) is a high-pressure resistant hose.

9. The pilot-operated water-surge relief valve calibration assembly according to claim 8, characterized in that: Both ends of the hydraulic hose (3) are corrugated.

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