Pressure relief device for hose of hose station

Abstract

The utility model relates to a pressure relief device for a hose of a hose station, and belongs to the technical field of engineering station safety. The pressure relief device comprises a first quick connector and a second quick connector, the second quick connector is connected with an anti-leakage valve through a first pipeline, the anti-leakage valve is connected with the first quick connector through an elbow pipeline, and the first pipeline is connected with a pressure relief valve and a pressure gauge through branch pipelines. The pressure relief valve is simple in structure, the pressure in the hose can be checked in real time through the pressure gauge, the pressure relief valve is more suitable for pressure relief of various equipment ports and pipeline ports with flange connection after the hose is used, pressure relief can be achieved under various working conditions where the hose is used, and the use cost of the valve is saved; one elbow is used, so that hose connection for short-distance drainage can be realized; when a hose needs to be connected between devices, the pressure relief device can be used for hose pressure relief; the pressure relief device can solve the problem of pressure relief of the hose under various working conditions, and cost can be saved for chemical enterprises.

Description

Technical Field

[0001] The utility model relates to a pressure relief device for a hose of a hose station, belonging to the technical field of engineering station safety. Background Art

[0002] A utility station (abbreviated as US), also known as a hose station, is mainly set up for needs such as purging, cleaning, replacement, and maintenance. A utility station generally consists of pipelines, valves, hoses, and their supporting quick connectors, and its used media are usually nitrogen, air, water, steam, etc. Each group of utility hose stations should be equipped with quick connectors for connecting hoses. The quick connectors should face downward. For the convenience of operation and safety considerations, the distance between the quick connectors and the ground or platform surface should be 0.8 - 1.2 m.

[0003] Figure 1 It is a typical pipeline layout diagram of a hose station in HG20519.12 - 92. The hose stations designed by major design institutes are basically Figure 1 of the type shown, Figure 1 The shown hose station consists of a medium pipeline, a valve, and a quick connector with a flange. When using the hose station, one end of the hose is connected to the quick connector of the hose station, and the other end of the hose is connected to the equipment that needs to use the medium of the hose station.

[0004] Generally, chemical plants will design hose stations according to the Figure 1 shown layout diagram. If a tee is welded on the straight pipe section of the quick connector of the hose station shown in Figure 1 and then a ball valve is welded, the pressure relief of the hose can be achieved. However, after welding the ball valve on the hose station, on the one hand, it will directly increase the usage cost of pipe fittings, and the hose station does not look beautiful. On the other hand, there is only one valve for the isolation of the hose station medium. If this valve leaks internally, even if there is a pressure relief ball valve, it is still possible to disassemble the hose under pressure, and the safety risk is relatively large.

[0005] When equipment needs to be inspected and repaired, hoses are usually connected from the hose station for purging, cleaning, and replacement. After connecting the two ends of the hose to the interfaces of a certain equipment or pipeline using the hose, the two end valves are closed, and then the hose is disassembled. However, at this time, it is not clear whether the hose is pressurized. Hoses are generally connected by quick connectors, and each time the quick connector is disassembled, there may be relatively loud noises, splashes, scalding and other accidents, and it is difficult to fundamentally solve the safety problem. Content of the Utility Model

[0006] The purpose of the utility model is to provide a pressure relief device for a hose of a hose station to solve the technical problems existing in the prior art as described above.

[0007] The technical solution provided by the present utility model is as follows: A pressure relief device for a hose of a hose station, comprising a quick coupling one and a quick coupling two. The quick coupling two is connected with a leak prevention valve through a pipeline one. The leak prevention valve is connected with the quick coupling one through an elbow pipeline. The pipeline one is respectively connected with a pressure relief valve and a pressure gauge through branch pipelines.

[0008] On the basis of the above technical solution, the present utility model can also be improved as follows:

[0009] Further, the leak prevention valve is a leak prevention ball valve.

[0010] Further, the pressure relief valve is a pressure relief ball valve.

[0011] Further, the pressure gauge is a local pressure gauge.

[0012] Further, the quick coupling two is used to connect with the hose station.

[0013] Further, the quick coupling one is used to externally connect to a device that needs to use the medium of the hose station.

[0014] Further, the leak prevention valve and the pressure relief valve are made of materials that are resistant to high temperature and high pressure.

[0015] The technical solution provided by the present utility model has the following beneficial effects compared with the prior art:

[0016] The structure of the present utility model is simple. There is not only a pressure gauge to view the pressure in the hose in real time, but it is more suitable for pressure relief after using a hose at various equipment ports and pipeline ports with flange connections. It can relieve pressure under various working conditions of using a hose, saving the use cost of valves. If there is internal leakage in the valve at the hose station or the equipment connection, the internal leakage of the valve can be observed by using the pressure gauge, and the leak prevention ball valve can quickly block the internal leakage medium, essentially solving the safety risk of disassembling the pressurized hose. Most of the drains of the chemical plant pipelines are very close to the floor or the ground, and there is no space to install quick couplings. The present utility model uses an elbow to realize the hose connection for a shorter distance drain. And when hoses need to be connected between equipment, this pressure relief device can also be used for hose pressure relief. The pressure relief device of the present utility model can solve the pressure relief of hoses under various working conditions, and can also save costs for chemical enterprises. Description of the Drawings

[0017] Figure 1 It is a typical pipeline layout diagram of a hose station in the prior art;

[0018] Figure 2 It is a connection schematic diagram of the present utility model.

[0019] In the figure, 1 is the first quick connector; 2 is the second quick connector; 3 is the anti-leakage valve; 4 is the pressure relief valve; 5 is the pressure gauge; 6 is the first pipeline; 7 is the elbow pipeline; 8 is the branch pipeline. Specific Embodiment

[0020] The principles and features of the present utility model will be described below in conjunction with examples. The examples given are only for explaining the present utility model and are not used to limit the scope of the present utility model.

[0021] As Figure 2 shown, a pressure relief device for a hose of a hose station includes the first quick connector 1 and the second quick connector 2. The second quick connector 2 is connected with an anti-leakage valve 3 through a first pipeline 6. The anti-leakage valve 3 is connected with the first quick connector 1 through an elbow pipeline 7. The first pipeline 6 is respectively connected with a pressure relief valve 4 and a pressure gauge 5 through a branch pipeline 8. The anti-leakage valve 3 is an anti-leakage ball valve. The pressure relief valve 4 is a pressure relief ball valve. The pressure gauge 5 is a local pressure gauge. The second quick connector 2 is used to connect with the hose station. The first quick connector 1 is used to externally connect to a device that needs to use the medium of the hose station. The anti-leakage valve 3 and the pressure relief valve 4 are made of materials that are resistant to high temperature and high pressure.

[0022] Suppose a device is blocked and it is necessary to use the steam of the hose station to steam and clean the blockage. Connect the second quick connector 2 of the pressure relief device of the present utility model to the steam pipeline near the hose station or the blocked device. Connect the first quick connector 1 to the interface of the blocked device. Then open the valve on the hose station steam or the steam pipeline, open the anti-leakage valve 3 of the pressure relief device, and open the interface valve of the blocked device for operation. After the operation is completed, close the valve on the hose station or the steam pipeline, and close the interface valve of the blocked device. At this time, there may be pressurized steam or steam condensate in the hose. If the quick connector is directly disassembled, it may cause the steam or steam condensate to spray out, resulting in a scald accident. The correct operation is to close the valve on the hose station or the steam pipeline after the operation is completed, close the interface valve of the blocked device, check the pressure gauge 5 on the pressure relief device. Under the condition of ensuring safety, open the pressure relief ball valve of the pressure relief device to release the residual pressure in the hose, and then disassemble the connection between the first quick connector 1 and the interface of the blocked device, and disassemble the connection between the hose station or the steam pipeline and the second quick connector 2 to complete the cleaning of the blocked device.

[0023] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A pressure relief device for a hose of a hose station, characterized in that, It includes quick connector one (1) and quick connector two (2). The quick connector two (2) is connected with a leak-proof valve (3) through pipeline one (6). The leak-proof valve (3) is connected with the quick connector one (1) through an elbow pipeline (7). The pipeline one (6) is respectively connected with a pressure relief valve (4) and a pressure gauge (5) through a branch pipeline (8).

2. The pressure relief device for the hose of the hose station according to claim 1, characterized in that, The leak-proof valve (3) is a leak-proof ball valve.

3. The pressure relief device for the hose of the hose station according to claim 1, characterized in that, The pressure relief valve (4) is a pressure relief ball valve.

4. The pressure relief device for the hose of the hose station according to claim 1, characterized in that The pressure gauge (5) is a local pressure gauge.

5. The pressure relief device for the hose of the hose station according to claim 1, characterized in that, The quick connector two (2) is used to connect with a hose station.

6. The pressure relief device for the hose of the hose station according to claim 1, characterized in that, The quick connector one (1) is used to externally connect to a device that needs to use the medium of the hose station.

7. The pressure relief device for the hose of the hose station according to claim 1, characterized in that, The leak-proof valve (3) and the pressure relief valve (4) are made of materials resistant to high temperature and high pressure.

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