Connector connection fastener for liquid ammonia steel cylinder valve and pressure test pipeline
By modifying the liquid ammonia cylinder valve as a bolt pressing tightening device, the problem of easy slip wire and leakage of the interface in the liquid ammonia cylinder inspection is solved, and safety is improved and the loss of the pressure test hose is reduced. It is suitable for inspection and filling of a variety of gas cylinders.
Patent Information
- Application Number
- CN202422492760.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-15
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-10-15
AI Technical Summary
During the inspection process of existing liquid ammonia cylinders, the connection interface is prone to slip, leaking and explosion, and the pressure test hose needs to be disassembled and assembled many times, resulting in serious losses and the connection port cannot be replaced by itself.
Design a fastener for the interface connection between the liquid ammonia cylinder valve and the pressure test pipe, using top tightening bolts, nuts and round steel brackets, and transform the bottle valve to be tightened and tightened by bolts, add tetrafluoro gaskets to enhance the connection, and directly connect the pressure test hose to avoid disassembly.
It improves the safety of liquid ammonia cylinder inspection, reduces the loss of pressure test hoses, protects the bottle valve and pressure test hoses from wear, and is suitable for the inspection and filling of gas cylinders of different media.
Smart Images
Figure CN223191436U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a connection fastener, in particular to an interface connection fastener for a liquid ammonia cylinder valve and a pressure test pipeline, and belongs to the technical field of interfaces between liquid ammonia cylinder valves and pressure test pipelines. Background Art
[0002] During the current inspection of liquid ammonia cylinders, the pressure used in the pressure test and air tightness test is 1.5-2 times higher than that in daily use. The original connection interface is only from the pressure test hose to the cylinder valve outlet, with 5 threaded connections. During use, there are risks such as thread stripping, leakage, and connection explosion. Figure 1 As shown, it includes a valve stem 1-1, a nut 1-2, a cylinder interface 1-3, and a pressure test hose interface 1-4. During the pressure test and leak test process, the pressure test hose needs to be disassembled and assembled multiple times. If the pressure test hose interface becomes thread-stripped, the connection port cannot be replaced by the user and must be replaced with a new one.
[0003] Therefore, after many attempts and improvement tests, this fastener was produced. It is based on the modification of the gas cylinder valve. After the modification, φ10 round steel is welded as a bracket, and M10 bolts and nuts are welded. The threaded connection during inspection is changed to bolt compression and fastening. The gas cylinder valve does not need to be connected to the pressure test hose. A PTFE gasket is placed at the connection between the cylinder valve and the fastener. While strengthening the connection and fastening, the fastener can be directly connected to the pressure test hose through the thread. There is no need to disassemble it during inspection, protecting the cylinder valve and the pressure test hose thread from wear. Utility Model Content
[0004] The purpose of the utility model is to overcome the above-mentioned deficiencies in the prior art and to provide an interface connection fastener for a liquid ammonia cylinder valve and a pressure test pipeline, which has a simple and reasonable structural design, simplifies operation, improves safety, and reduces the loss of the pressure test hose.
[0005] The technical solution adopted by the utility model to solve the above problems is: the interface connection fastener of the liquid ammonia cylinder valve and the pressure test pipeline is used for connecting the cylinder valve and the pressure test hose interface, and is characterized in that it includes a tightening bolt, a nut and a round steel bracket, the front end of the tightening bolt passes through the nut and is pressed and tightened with the cylinder valve, the round steel bracket is welded with a nut, and the cylinder valve and the fastener are tightened by the nut.
[0006] Preferably, the present invention further comprises a PTFE gasket, which is used for the interface between the cylinder valve and the fastener, and the interface between the fastener and the pressure test hose.
[0007] Preferably, the material of the tetrafluoroethylene gasket of the present invention is polytetrafluoroethylene.
[0008] Preferably, the round steel bracket, nut and modified steel cylinder valve of the present invention are welded to form a fastener.
[0009] Preferably, the cylinder valve of the utility model is connected to a fastener, and the fastener is connected to a pressure test hose.
[0010] Compared with the prior art, the utility model has the following advantages and effects: (1) The overall structural design is reasonable and can be used when inspecting liquid ammonia cylinders. It is durable and not easy to damage, which can improve the safety of liquid ammonia cylinder inspection, prevent the interface from suddenly bursting, and reduce the loss of the pressure test hose; (2) It is suitable for inspecting and filling different medium cylinders using the same type of bottle valve; (3) While strengthening the connection and tightening, the pressure test hose can be directly connected without disassembly during inspection; it protects the bottle valve and the pressure test hose thread from wear and tear, meeting the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a structural diagram of the embodiment of the utility model before modification.
[0012] Figure 2 It is a schematic diagram of the overall structure of an embodiment of the present utility model.
[0013] In the figure: tightening bolt 1, nut 2, round steel bracket 3, PTFE gasket 4, pressure test hose interface 5, bottle valve fastening point 6. DETAILED DESCRIPTION
[0014] The present invention will be further described in detail below with reference to the accompanying drawings and through examples. The following examples are provided to explain the present invention, but the present invention is not limited to the following examples.
[0015] Example
[0016] See also Figure 2 The interface connection fastener between the liquid ammonia cylinder valve and the pressure test pipeline in this embodiment is used to connect the cylinder valve and the pressure test hose interface 5. The interface connection fastener between the liquid ammonia cylinder valve and the pressure test pipeline includes a tightening bolt 1, a nut 2 and a round steel bracket 3. The front end of the tightening bolt 1 passes through the nut 2 and is pressed and tightened with the cylinder valve. The round steel bracket 3 is welded with a nut 2, and the cylinder valve and the fastener are tightened by the nut 2.
[0017] The PTFE gasket 4 in this embodiment is used for the interface between the cylinder valve and the fastener, and the interface 5 between the fastener and the pressure test hose; the material of the PTFE gasket 4 is polytetrafluoroethylene.
[0018] In this embodiment, the round steel bracket 3, the nut 2 and the modified steel cylinder valve are welded to make a fastener, and the position of the cylinder valve fastening part 6 is as follows: Figure 2 shown.
[0019] In this embodiment, the cylinder valve is connected to the fastener, and the fastener is connected to the pressure test hose.
[0020] This embodiment changes the original connection method and uses a fastener for connection, which is more efficient, improves safety and reduces loss of the pressure test hose.
[0021] The modification of this embodiment includes the following steps: (1) modifying the gas cylinder valve, and using the original pressure test hose and fastener as fixed connection points; (2) modifying the valve inlet and welding it to the round steel bracket 3 and the nut 2, so that it can be inserted into the valve installed on the bottle body; (3) using the tightening bolt 1 to tighten the connection instead of the original thread mouth to enhance safety during use; (4) reducing the loss of the pressure test hose. At the same time, this interface can also be used for filling liquid ammonia cylinders and inspecting and filling gas cylinders with valves of the same size.
[0022] In this embodiment, the threaded connection is changed to a tightening bolt 1 for compression and tightening, which strengthens the connection and tightening and can directly connect the pressure test hose without disassembly during inspection; and protects the bottle valve and the pressure test hose thread from wear.
[0023] This embodiment can be used when inspecting liquid ammonia cylinders. It is durable and not easy to damage. It can improve the safety during the inspection of liquid ammonia cylinders, prevent the interface from suddenly bursting, and reduce the loss of the pressure test hose. At the same time, it is suitable for the inspection and filling of gas cylinders with the same type of bottle valves.
[0024] Current operating status of the equipment in this embodiment: The new interface is highly durable and not easily damaged. It has been used in the pressure test and leak test device for more than 3 years without any damage, which improves the safety during inspection and testing, and no explosion or leakage of the connection interface occurs.
[0025] Through the above description, those skilled in the art can already implement it.
[0026] In addition, it should be noted that the shapes and names of the parts and components of the specific embodiments described in this specification may be different, and the above content described in this specification is merely an example of the structure of the utility model. Any equivalent changes or simple changes made based on the structure, features and principles described in the concept of the utility model patent are included in the scope of protection of the utility model patent. Technicians in the technical field of the utility model can make various modifications or supplements to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, they should fall within the scope of protection of the utility model.
Claims
1. A fastener for connecting the interface between the valve of a liquid ammonia cylinder and a pressure test pipe, used for connecting the cylinder valve and the pressure test hose interface (5), characterized in that: The invention comprises a tightening bolt (1), a nut (2) and a round steel bracket (3); the front end of the tightening bolt (1) passes through the nut (2) and is pressed and fastened to the cylinder valve; the nut (2) is welded to the round steel bracket (3); the cylinder valve and the fastener are fastened by the nut (2).
2. The interface fastener for connecting the liquid ammonia cylinder valve and the pressure test pipeline according to claim 1 is characterized in that: It also includes a tetrafluoroethylene gasket (4), which is used for the interface between the cylinder valve and the fastener, and the interface between the fastener and the pressure test hose (5).
3. The interface fastener for connecting the liquid ammonia cylinder valve and the pressure test pipeline according to claim 2 is characterized in that: The material of the tetrafluoroethylene gasket (4) is polytetrafluoroethylene.
4. The interface fastener for connecting the liquid ammonia cylinder valve and the pressure test pipeline according to claim 1 is characterized in that: The round steel bracket (3), the nut (2) and the modified steel cylinder valve are welded to form a fastener.
5. The interface fastener for connecting the liquid ammonia cylinder valve and the pressure test pipeline according to claim 1 is characterized in that: The cylinder valve is connected to a fastener, and the fastener is connected to a pressure test hose.