Annular pressure reducing device

Abstract

The annular pressure reducing device comprises a pressure reducing annular pipe, the pressure reducing annular pipe is provided with an input end and an output end, the input end and the output end of the pressure reducing annular pipe extend oppositely, and the middle of the pressure reducing annular pipe is wound in a multi-circle spiral curve shape; the number of the pressure gauges is two, the two pressure gauges are both installed on the pressure reduction ring pipe, the two pressure gauges are installed at the input end and the output end of the pressure reduction ring pipe respectively, and the two pressure gauges are oppositely arranged; and the positioning piece is arranged at the spiral curve of the middle part of the pressure reducing ring pipe and is used for fixing the shape of the rolled pressure reducing ring pipe. The pressure reduction ring pipe device is simple in structure, convenient to install, high in applicability and suitable for various industrial production sites.

Description

Technical Field

[0001] The utility model relates to the field of pressure reducing devices, in particular to an annular pressure reducing device. Background Art

[0002] Fluid transportation is indispensable in industrial production and operation. During the transportation process, the pressure of the fluid often needs to be reduced to meet production or life needs. For example, when gas is transported to the user end, the pressure needs to be reduced to meet the user's safety needs. Urban water plants, water supply companies, water treatment plants and other places that require low-pressure water transportation have relatively high requirements for water pressure stability and also require pressure reducing devices. Otherwise, it will cause damage to water pipes and water pumps, so pressure reducing devices are very necessary.

[0003] Chinese utility model patent CN216712034U discloses "a decompression pipeline for distilling and preparing plant essential oils". This scheme sets a vertical spiral tube in the inner cavity of the condensing chamber. The water inlet and outlet of the condensing chamber are connected to the cooling water system. One side of the three-way pipe is connected to the distillation equipment, and the straight end is connected to the collection box. The vertically arranged spiral tube is used to make the steam and the condensed water form an interlaced heat flow in the spiral tube. This device uses the decompression pipeline in distillation, and the effect is good, but it also makes the structure more complicated, the application range is narrow, and the applicability is poor.

[0004] Chinese utility model patent CN213181056U discloses "a light pressure-reducing pipe test device". This scheme uses electric motors, telescopic rods, locking rings and other devices to place the pressure-reducing pipe in a water tank, which can be used to test the pressure-reducing pipe and improve the test efficiency. Through a series of sensor devices, the accurate pressure-reducing value of the pressure-reducing pipe and the maximum pressure value that the pressure-reducing pipe can withstand can be obtained, and the test can be completed intuitively and quickly. The device has high measurement accuracy, but it is only an experimental device and its engineering applicability is unknown.

[0005] It is very necessary to achieve simple, fast and safe decompression of fluids in the engineering field. According to the analysis of the patents that have been published in China, most of the devices have problems such as complex equipment and poor applicability, which urgently need to be improved. Utility Model Content

[0006] In order to solve the above problems, the utility model proposes an annular pressure reducing device to solve the above problems existing in the prior art.

[0007] To achieve the above object, the utility model provides an annular pressure reducing device comprising: a pressure reducing ring tube, the pressure reducing ring tube having an input end and an output end, the input end and the output end of the pressure reducing ring tube respectively extending relative to each other, and the middle part of the pressure reducing ring tube being wound around to form a multi-turn spiral curve;

[0008] A pressure gauge, wherein two pressure gauges are arranged and both are installed on the pressure reducing ring pipe, wherein the two pressure gauges are respectively installed on the input end and the output end of the pressure reducing ring pipe, and the two pressure gauges are arranged opposite to each other;

[0009] A positioning member is arranged at the middle spiral curve of the decompression ring tube to fix the shape of the decompression ring tube after it is rolled up.

[0010] Furthermore, it also includes a shell, the middle of the shell is open at the top, the pressure reducing ring tube and the two pressure gauges are arranged inside the shell, the input end and the output end of the pressure reducing ring tube are respectively located at opposite ends of the shell, and the input end and the output end of the pressure reducing ring tube both extend out of the shell;

[0011] Observation windows are provided on opposite sides of the shell, the observation windows are opposite to the pressure gauge, and the observation windows penetrate the outer wall of the pressure reducing ring tube.

[0012] Furthermore, a door is hinged on the top of the shell.

[0013] Furthermore, liquid crystal screens are arranged on both sides of the shell, and the liquid crystal screens are embedded inside the liquid crystal screen to display the measured value of the pressure gauge.

[0014] Furthermore, the output end and the input end of the pressure reducing ring tube are both arranged with enlarged diameters, and the output end and the input end of the pressure reducing ring tube are both connected with flanges.

[0015] Furthermore, the positioning member includes a pipe clamp, and a plurality of the pipe clamps are provided, and the plurality of pipe clamps are arranged at the spiral curve in the middle of the pressure reducing ring tube.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The pressure reducing ring pipe device has a simple structure, is easy to install, has strong applicability, and is suitable for various industrial production sites;

[0018] 2. The pressure reducing ring pipe device realizes pressure reduction through the pressure reducing ring pipe and realizes real-time detection of fluid pressure through the pressure gauge, which is efficient and convenient.

[0019] In order to better understand and implement the present invention, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the internal structure of the shell in the utility model.

[0022] In the figure: 1. Pressure reducing ring pipe; 2. Pressure gauge; 3. Pipe clamp; 4. LCD screen; 5. Housing; 6. Flange. DETAILED DESCRIPTION

[0023] In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation methods of the utility model are now described with reference to the accompanying drawings, but the protection scope of the utility model is not limited to the following.

[0024] Reference Figure 1-2 As shown, an annular pressure reducing device comprises: a pressure reducing ring tube 1, the pressure reducing ring tube 1 has an input end and an output end, the input end and the output end of the pressure reducing ring tube 1 extend relatively to each other, and the middle part of the pressure reducing ring tube 1 is wound around to form a spiral curve with multiple turns; a pressure gauge 2, two pressure gauges 2 are arranged, both are installed on the pressure reducing ring tube 1, wherein the two pressure gauges 2 are respectively installed on the input end and the output end of the pressure reducing ring tube 1, and the two pressure gauges 2 are arranged relatively to each other; a positioning member, the positioning member is arranged at the spiral curve in the middle of the pressure reducing ring tube 1, and is used to fix the shape of the pressure reducing ring tube 1 after rolling;

[0025] It also includes a shell 5, the middle of the shell 5 is open at the top, the pressure reducing ring tube 1 and the two pressure gauges 2 are arranged inside the shell 5, the input end and the output end of the pressure reducing ring tube 1 are respectively located at the opposite ends of the shell 5, and the input end and the output end of the pressure reducing ring tube 1 extend out of the shell 5; observation windows are provided on opposite sides of the shell 5, the observation windows are opposite to the pressure gauges 2, and the observation windows penetrate the outer wall of the pressure reducing ring tube 1; a box door is hinged on the top of the shell 5; liquid crystal screens 4 are provided on both sides of the shell 5, and the liquid crystal screens 4 are embedded inside the liquid crystal screens 4 to display the measured values ​​of the pressure gauges 2;

[0026] The output end and the input end of the pressure reducing ring pipe 1 are both set with enlarged diameters, and the output end and the input end of the pressure reducing ring pipe 1 are both connected with flanges 6;

[0027] The positioning member is specifically a pipe clamp 3 , and a plurality of pipe clamps 3 are provided. The plurality of pipe clamps 3 are arranged at the spiral curve in the middle of the pressure reducing ring pipe 1 .

[0028] The utility model provides a technical solution, in use, the input end and the output end of the pressure reducing ring tube 1 are both connected and fixed to the pipeline, and the pressure is reduced through the pressure reducing ring tube 1 during transportation, and the pressure is convenient for personnel to observe the pressure through the provided pressure gauge 2 and the liquid crystal screen 4. The provided box door is convenient for personnel to inspect the equipment inside the housing 5.

[0029] In this embodiment, the design of the pressure reducing ring pipe 1 is as follows:

[0030] (1) Input: upstream pressure P1, downstream required pressure P2;

[0031] (2) Annular pipe section: Select the pipe diameter d; bending radius R; flow rate Q; then the flow rate is

[0032] v=Q / ((πd) 2 / 4);

[0033] 90° elbow local loss coefficient ξ 90 =0.131+0.1632×(d / R) 3.5 ;

[0034] Then the local loss hf1=4×ξ 90 (v 2 / 2g);

[0035] Viscosity coefficient μ; water density ρ; Reynolds number Re = ρvd / μ; along-the-line loss coefficient λ; length of the horizontal section of the annular pipe L1;

[0036] Then the loss along the way hf2=λ(2πR+2L1) / d×v 2 / 2g;

[0037] Total loss of a single tube: hf = hf1 + hf2; number of ring tube turns n;

[0038] The total loss of the ring pipe hf 环 =n×hf;

[0039] (3) Interface section:

[0040] Straight pipe length L2; elbow loss coefficient ξ 3 ;

[0041] Then the interface loss hf3=(λL2 / d+ξ 3 )×v 2 / 2g;

[0042] (4) Total loss of pressure relief ring pipe device: hf total =hf 环 +hf3, according to P1-P2=hf total Principle, determine the total loss required.

[0043] The above disclosure is only a preferred embodiment of the present invention, which certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. An annular pressure reducing device, characterized in that: include: A pressure reducing ring tube (1), the pressure reducing ring tube (1) having an input end and an output end, the input end and the output end of the pressure reducing ring tube (1) respectively extending relative to each other, and the middle part of the pressure reducing ring tube (1) being wound around to form a multi-turn spiral curve; A pressure gauge (2), wherein two pressure gauges (2) are arranged and both are installed on the pressure reducing ring tube (1), wherein the two pressure gauges (2) are respectively installed on the input end and the output end of the pressure reducing ring tube (1), and the two pressure gauges (2) are arranged opposite to each other; A positioning member is arranged at the middle spiral curve of the decompression ring tube (1) and is used to fix the shape of the decompression ring tube (1) after it is rolled up.

2. An annular decompression device according to claim 1, characterized in that: It also comprises a shell (5), the middle of the shell (5) is open at the top, the pressure reducing ring tube (1) and the two pressure gauges (2) are arranged inside the shell (5), the input end and the output end of the pressure reducing ring tube (1) are respectively located at two opposite ends of the shell (5), and the input end and the output end of the pressure reducing ring tube (1) both extend out of the shell (5); Observation windows are provided on opposite sides of the shell (5), the observation windows are opposite to the pressure gauge (2), and the observation windows penetrate the outer wall of the pressure reducing ring tube (1).

3. An annular decompression device according to claim 2, characterized in that: A door is hinged on the top of the shell (5).

4. The annular pressure reducing device according to claim 2, characterized in that: Liquid crystal screens (4) are arranged on both sides of the housing (5), and the liquid crystal screens (4) are embedded inside the liquid crystal screen (4) to display the measured value of the pressure gauge (2).

5. The annular pressure reducing device according to claim 1, characterized in that: The output end and the input end of the pressure reducing ring tube (1) are both arranged with enlarged diameters, and the output end and the input end of the pressure reducing ring tube (1) are both connected with flanges (6).

6. The annular pressure reducing device according to claim 1, characterized in that: The positioning member comprises a pipe clamp (3), a plurality of the pipe clamps (3) are provided, and the plurality of the pipe clamps (3) are arranged at the spiral curve in the middle of the pressure reducing ring tube (1).

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