Pressure adjusting device and method for test

Abstract

The invention provides a pressure regulating device and method for a test, and the device comprises an upstream pipe section and a downstream pipe section, the upstream pipe section and the downstream pipe section are respectively connected with two ends of a flowmeter, the head end of the upstream pipe section is connected with a hose connector, the tail end of the downstream pipe section is provided with a pressure regulating mechanism, and the pipe body of the downstream pipe section is provided with a temperature and humidity instrument and a pressure gauge. According to the ship ventilation test device, the pipeline outlet back pressure is adjusted, the pipeline flow, the temperature and the humidity are measured, cleanliness measurement is provided, the structure is simple, operation is convenient and fast, and the ship ventilation test efficiency and the data accuracy are improved.

Description

Technical Field

[0001] The present application relates to the technical field of pressure regulation at the end of a ship pipeline, and in particular to a pressure regulating device and method for testing. Background Art

[0002] At present, there is no test fixture in the domestic shipbuilding field that has terminal pressure regulation and can measure pipeline temperature and humidity, pressure and fluid sampling. At present, domestic flow or pressure regulation mainly adopts butterfly valves and ball valves. However, due to the uneven change of the cross-sectional area of ​​butterfly valves and ball valves in manual state, the pressure regulation is not sensitive when the opening is large, and the pressure regulation margin is insufficient when the opening is small, making it difficult to adjust the back pressure more evenly during the test. At the same time, the gas flowmeter requires the length of the front and rear straight pipe sections to be no less than 5 times the pipe diameter. At present, there is no existing test fixture in China that can measure pipeline gas flow. Now it is necessary to design a fixture that can not only evenly adjust the back pressure, but also measure the pipeline gas flow, temperature and humidity and pressure at the same time. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a test pressure regulating device and method for the above-mentioned problems, which can not only manually and stably adjust the pipeline outlet pressure, but also synchronously measure the pipeline gas flow, temperature, humidity and pressure, and at the same time measure the air cleanliness of the gas in the pipeline at any time.

[0004] The embodiment of the present application is implemented as follows:

[0005] An embodiment of the present application provides a test pressure regulating device, which is characterized in that it includes an upstream pipe section and a downstream pipe section, wherein the two ends of a flow meter are respectively connected between the upstream pipe section and the downstream pipe section, the head end of the upstream pipe section is connected to a hose connector, the end of the downstream pipe section is provided with a pressure regulating mechanism, a temperature and humidity meter and a pressure gauge are provided on the pipe body of the downstream pipe section, and an air sampling port is opened.

[0006] In some optional embodiments, the pressure regulating mechanism includes an adjusting cone and an adjusting screw, the tip of the adjusting cone is arranged toward the pipe mouth of the downstream pipe section, the adjusting screw is an L-shaped rod, which is installed on the pipe wall of the downstream pipe section, the horizontal rod section of the adjusting screw is threadedly connected to the tip of the adjusting cone, and the adjusting cone rotates and moves along the horizontal rod section.

[0007] In some optional embodiments, the terminal pipe opening of the downstream pipe section is provided with a bell mouth, which is configured with the conical surface of the adjusting cone.

[0008] In some optional embodiments, outer surfaces of the upstream pipe section and the downstream pipe section are both covered with a thermal insulation layer.

[0009] In some optional embodiments, the upstream pipe section is a straight pipe section with a length of not less than 1 m, and is connected to one end of the flow meter through a flange.

[0010] In some optional embodiments, the downstream pipe section is a straight pipe section with a length of not less than 1 m, and is connected to the other end of the flow meter through a flange.

[0011] In some optional embodiments, the top of the downstream pipe section near the terminal pipe opening is preset with installation interfaces for the temperature and humidity meter and the pressure gauge, and the side wall of the pipe body near the terminal pipe opening is provided with the air sampling port.

[0012] In some optional embodiments, the hose connector is a quick connector, which is fixedly connected to the upstream pipe section via a flange.

[0013] In some optional embodiments, the air sampling port is a circular threaded port, which is sealed by a bolt.

[0014] A method for using a test pressure regulating device, characterized in that it comprises the following steps:

[0015] Step a, adjusting the distance between the conical pressure surface of the adjusting cone and the end of the downstream pipe section by rotating the adjusting cone, thereby adjusting the outlet area of ​​the downstream pipe section and adjusting the back pressure at the end of the downstream pipe section;

[0016] Step b, measuring the flow rate of the gas passing through the upstream pipe section and the downstream pipe section by a flow meter, and measuring the pressure and temperature and humidity of the gas passing through the pressure gauge and the temperature and humidity meter;

[0017] Step c: when necessary, sample and measure the cleanliness of the gas in the tube through the air sampling port.

[0018] The beneficial effects of the present application are as follows: the present application provides a test pressure regulating device and method, which adopts a conical pressure surface in the pressure regulating component, and can adjust the size of the end opening more evenly by manual operation, so as to adjust the outlet back pressure more stably. At the same time, by establishing upstream and downstream pipe sections and end pressure gauges and temperature and humidity meters, the gas flow, pressure, temperature and humidity passing through can be accurately measured, thereby effectively improving the ventilation test efficiency and data accuracy in the ship field. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0024] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0025] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0026] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0027] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0028] The features and performance of the present application are further described in detail below in conjunction with the embodiments.

[0029] like Figure 1 As shown, the present invention proposes a test pressure regulating device, comprising an upstream pipe section 1 and a downstream pipe section 2, the upstream pipe section and the downstream pipe section are respectively connected to the two ends of a flow meter 3, the head end of the upstream pipe section is connected to a hose connector 4, the end of the downstream pipe section is provided with a pressure regulating mechanism, a temperature and humidity meter 5 and a pressure gauge 6 are provided on the pipe body of the downstream pipe section, and an air sampling port 7 is provided. The outlet back pressure of the fluid can be stably regulated by the pressure regulating mechanism, and the pressure, temperature and humidity in the pipe and the air flow rate can be measured by the flow meter, the pressure gauge, the temperature and humidity meter, and the temperature and humidity meter, and the air sample can be obtained through the sampling port to measure the cleanliness of the fluid.

[0030] The pressure regulating mechanism includes an adjusting cone 8 and an adjusting screw 9. The tip of the adjusting cone is set toward the downstream pipe section. The adjusting screw is an L-shaped rod installed on the pipe wall of the downstream pipe section. The horizontal rod section of the adjusting screw is screwed to the tip of the adjusting cone, and the adjusting cone rotates and moves along the horizontal rod section. The distance between the conical pressure surface and the end of the downstream pipe section is adjusted by rotating back and forth, and the end back pressure is adjusted by adjusting the outlet size. Within the adjustment range, the conical pressure surface can be locked by friction to avoid slippage.

[0031] The terminal pipe opening of the downstream pipe section is provided with a bell mouth 10, which is configured with the conical surface of the regulating cone and forms a uniform flow channel with the conical surface of the regulating cone, so that the pressure regulation is more uniform.

[0032] The outer surfaces of the upstream pipe section and the downstream pipe section are both covered with a thermal insulation layer 11 to ensure stable passage of the fluid.

[0033] The upstream pipe section is a straight pipe section with a length of not less than 1m, which is connected to one end of the flow meter through a flange; the downstream pipe section is a straight pipe section with a length of not less than 1m, which is connected to the other end of the flow meter through a flange.

[0034] The installation interface of the temperature and humidity meter and the pressure gauge is preset on the top of the downstream pipe body near the end of the pipe mouth, and the side wall of the pipe body near the end of the pipe mouth is provided with an air sampling port. The air sampling port is a circular threaded port, which is sealed by a bolt. When necessary, the bolt is opened to take samples and measure the cleanliness of the gas in the pipeline.

[0035] The hose connector is a quick connector, which is fixedly connected to the upstream pipe section through a flange.

[0036] The method of using the above device includes the following contents:

[0037] The distance between the cone pressure surface of the cone and the end of the downstream pipe section is adjusted by rotating the adjusting cone, thereby adjusting the outlet area of ​​the downstream pipe section and adjusting the back pressure at the end of the downstream pipe section; the flow rate of the gas passing through is measured by a flow meter between the upstream pipe section and the downstream pipe section, and the pressure, temperature and humidity of the gas passing through are measured by a pressure gauge and a temperature and humidity meter; when necessary, the cleanliness of the gas in the pipe is measured by sampling through the air sampling port.

[0038] Example 1

[0039] The upstream and downstream pipe sections are both stainless steel round pipe sections with a wall thickness of 1.5 to 2 mm. The hose quick connector can be connected to the upstream pipe section through a flange according to the actual situation of the pipe section to be measured. The gas flow meter is fixed to the middle of the upstream and downstream pipe sections through an eight-hole flange. The top of the end of the downstream pipe section is reserved for the threaded interface of the thermometer and humidity meter and the pressure gauge. The side wall is welded with a 5-8 mm diameter bolt hole, which is sealed with bolts as an air sampling port. When necessary, the air cleanliness in the pipe can be measured through the air sampling port. A conical pressure surface pressure adjustment mechanism is installed at the end to achieve manual rotation adjustment. The bell mouth is welded at the end of the downstream pipe section to fit the conical surface. The straight pipe section is covered with a coating material about 30 mm thick as an insulation layer to reduce the temperature transfer inside and outside the pipe.

[0040] This patent uses a unique design combination, reasonable layout, and effective verification, which effectively achieves the purpose of the previous invention.

[0041] The above is only a preferred embodiment of the present intellectual achievement, but the present intellectual achievement should not be limited to the contents disclosed in the embodiment and the accompanying drawings. All equivalents or modifications completed without departing from the spirit disclosed in the present invention fall within the scope of protection of the present invention.

Claims

1. A test pressure regulating device, characterized in that: It includes an upstream pipe section and a downstream pipe section, wherein the two ends of the flow meter are connected respectively between the upstream pipe section and the downstream pipe section, the head end of the upstream pipe section is connected to a hose connector, the end of the downstream pipe section is provided with a pressure regulating mechanism, a temperature and humidity meter and a pressure gauge are provided on the pipe body of the downstream pipe section, and an air sampling port is provided.

2. A test pressure regulating device according to claim 1, characterized in that: The pressure regulating mechanism comprises an adjusting cone and an adjusting screw. The tip of the adjusting cone is arranged toward the pipe mouth of the downstream pipe section. The adjusting screw is an L-shaped rod installed on the pipe wall of the downstream pipe section. The horizontal rod section of the adjusting screw is screwed to the tip of the adjusting cone, and the adjusting cone rotates and moves along the horizontal rod section.

3. A test pressure regulating device according to claim 2, characterized in that: The terminal pipe opening of the downstream pipe section is provided with a bell mouth, which is configured with the conical surface of the regulating cone.

4. A test pressure regulating device according to claim 3, characterized in that: The outer surfaces of the upstream pipe section and the downstream pipe section are both covered with a thermal insulation layer.

5. A test pressure regulating device according to claim 1 or 4, characterized in that: The upstream pipe section is a straight pipe section with a length of not less than 1m, and is connected to one end of the flow meter through a flange.

6. A test pressure regulating device according to claim 5, characterized in that: The downstream pipe section is a straight pipe section with a length of not less than 1m, and is connected to the other end of the flow meter through a flange.

7. A test pressure regulating device according to claim 4 or 6, characterized in that: The top of the downstream pipe section near the terminal pipe opening is preset with the installation interface of the temperature and humidity meter and the pressure gauge, and the side wall of the pipe body near the terminal pipe opening is provided with the air sampling port.

8. A test pressure regulating device according to claim 1, characterized in that: The hose connector is a quick connector, which is fixedly connected to the upstream pipe section via a flange.

9. A test pressure regulating device according to claim 7, characterized in that: The air sampling port is a circular threaded port and is sealed by a bolt.

10. A method using a test pressure regulating device as claimed in claim 5, characterized in that: The steps include: Step a, adjusting the distance between the conical pressure surface of the adjusting cone and the end of the downstream pipe section by rotating the adjusting cone, thereby adjusting the outlet area of ​​the downstream pipe section and adjusting the back pressure at the end of the downstream pipe section; Step b, measuring the flow rate of the gas passing through the upstream pipe section and the downstream pipe section by a flow meter, and measuring the pressure and temperature and humidity of the gas passing through the pressure gauge and the temperature and humidity meter; Step c: when necessary, sample and measure the cleanliness of the gas in the tube through the air sampling port.

Images