Compact spindle flow throttling device

Abstract

The utility model discloses a compact type spindle body flow throttling device which comprises a shell, a spindle body throttling assembly is arranged in the shell and comprises a spindle body, one end of the spindle body is fixedly provided with a hemispherical fairing, the other end of the spindle body is fixedly provided with a tail contraction section, and the tail contraction section is fixedly provided with a hollow cavity. The other end of the tail contraction section is provided with an annular wing plate, flange rings are fixedly installed on the outer walls of the two ends of the shell, installation holes are formed in the flange rings, and a high-pressure pressure taking pipe is fixedly installed on the side wall of the end, fixedly provided with the shell, of the outer wall of the shell. A temperature sensor tube base is fixedly installed on the outer wall of the other end of the shell. By means of the structure, the good rectification effect on fluid is effectively achieved, the upstream straight pipe section is required to be short, and the advantages of being compact in structure, small in size and low in pressure loss are achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of spindle body flow throttling devices, and in particular to a compact spindle body flow throttling device. Background Technology

[0002] The spindle flow meter, also known as a channel flow meter, is a type of throttling flow meter. Due to its external throttling design and streamlined spindle throttling element, this flow meter has the advantages of short straight pipe section requirements, strong anti-fouling ability, good wear resistance, and low pressure loss. It has achieved good application results in the fields of bidirectional flow measurement in underground natural gas storage facilities, flow measurement in large-diameter industrial gas pipelines, and flow measurement in natural gas production processes in oil and gas fields.

[0003] In current spindle flow meter designs, in order to reduce flow separation at the tail end of the spindle throttling element, the terminal cone of the spindle throttling element is relatively long, resulting in a relatively large overall length of the throttling device, generally four to five times the pipe diameter. For large-diameter pipe flow meters, the excessive length of the meter body leads to problems such as transportation difficulties and insufficient on-site installation space. Utility Model Content

[0004] The purpose of this invention is to provide a compact spindle flow throttling device, the length of which is significantly shorter than that of typical existing spindle flow throttling devices.

[0005] To achieve the above objectives, a compact spindle flow throttling device is provided, comprising: a housing, wherein a spindle throttling assembly is disposed inside the housing;

[0006] The spindle body throttling assembly includes a spindle body, one end of which is fixedly mounted with a hemispherical fairing, and the other end of which is fixedly mounted with a tail contraction section, and the other end of which is provided with an annular wing plate.

[0007] According to the compact spindle body flow throttling device, flange rings are fixedly installed on the outer walls at both ends of the housing, and mounting holes are provided on the flange rings.

[0008] According to the compact spindle flow throttling device, a high-pressure tapping pipe is fixedly installed on the outer wall of the housing, and a temperature sensor tube seat is fixedly installed on the outer wall of the other end of the housing.

[0009] According to the aforementioned compact spindle flow throttling device, a temperature sensor is provided on the outer wall of the temperature sensor tube seat, and a low-pressure tapping tube is fixedly installed on the outer wall of the housing.

[0010] According to the compact spindle-shaped flow throttling device, support plates are fixed on the outer wall of the hemispherical fairing and the outer wall of the tail contraction section.

[0011] According to the compact spindle body flow throttling device, the support plate is fixedly installed on the inner wall of the housing.

[0012] The above-mentioned solution has the following beneficial effects:

[0013] Compared with the traditional spindle flow throttling device, the compact spindle flow throttling device of this invention has undergone a completely new structural optimization and design, which effectively shortens the length of the traditional spindle flow throttling device, thereby solving the problem of limited equipment installation space and achieving good performance.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0016] Figure 1 This is a schematic diagram of the structure of a compact spindle body flow throttling device according to the present invention;

[0017] Figure 2 This is a port plan view of a compact spindle body flow throttling device according to the present invention.

[0018] Figure 3 This is a schematic diagram of the spindle body throttling component structure of a compact spindle body flow throttling device according to this utility model.

[0019] Legend:

[0020] 1. Housing; 2. Spindle body throttling assembly; 21. Hemispherical fairing; 22. Spindle body; 23. Tail contraction section; 24. Annular wing plate; 3. Flange ring; 4. High-pressure tapping pipe; 5. Low-pressure tapping pipe; 6. Temperature sensor socket; 7. Support plate. Detailed Implementation

[0021] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0022] Reference Figure 1-3This utility model provides a compact spindle flow throttling device, which includes: a housing 1, a spindle throttling component 2 disposed inside the housing 1, the spindle throttling component 2 being installed on the coaxial center of the housing 1 to form an annular cross-section flow channel. This structure generates an external throttling effect on the fluid entering the flow channel. At the same time, the annular cross-section flow channel has a small gap and a certain length in the flow direction, which has a flow rectification effect. The spindle throttling component 2 is generally in the shape of a traditional spindle with the tail truncated. The length of the spindle body 22 is not less than one times its diameter.

[0023] The spindle body throttling assembly 2 includes a spindle body 22. A hemispherical fairing 21 is fixedly installed at one end of the spindle body 22, and a tail contraction section 23 is fixedly installed at the other end of the spindle body 22. The length of the tail contraction section 23 is half the diameter of the spindle body 22. An annular wing plate 24 is provided at the other end of the tail contraction section 23. The annular wing plate 24 can weaken the flow separation effect, prevent large-size vortices from falling off, reduce flow losses, and reduce pressure fluctuations caused by the falling off of large-size vortices and the resulting pressure tapping signal pulsation.

[0024] Flange rings 3 are fixedly installed on the outer walls of both ends of the housing 1. Mounting holes are provided on the flange rings 3. A high-pressure tapping pipe 4 is fixedly installed on the side wall of one end of the housing 1. Both the high-pressure tapping pipe 4 and the low-pressure tapping pipe 5 use the wall surface of the housing 1 for pressure tapping. Multiple pressure taps are used at the cross-section of the high-pressure tapping pipe 4 to reduce the influence of uneven flow on pressure measurement. A temperature sensor tube holder 6 is fixedly installed on the outer wall of the other end of the housing 1. A temperature sensor is installed on the outer wall of the temperature sensor tube holder 6. A low-pressure tapping pipe 5 is fixedly installed on the outer wall of the housing 1. Single-point pressure tapping is used at the cross-section because the pressure distribution tends to be uniform after the flow is rectified through the annular cross-section flow channel, so there is no need to use multi-point pressure tapping. The pressure tapping section of the low-pressure tapping pipe 5 corresponds to the middle position of the spindle body throttling component column. Support plates 7 are fixed on the outer wall of the hemispherical rectifier 21 and the outer wall of the tail contraction section 23. The support plates 7 are fixedly installed on the inner wall of the shell 1. The support plates 7 are divided into front and rear groups, which fix the spindle body throttling component 2 inside the shell 1. The number of support plates 7 in each group is the same as the number of pressure tapping holes of the high-pressure tapping pipe 4. They are evenly arranged along the circumference of the spindle body and staggered from the position of the pressure tapping holes of the high-pressure tapping pipe 4.

[0025] Working principle: The spindle body throttling assembly 2 is installed coaxially inside the housing 1. When the fluid flows in from the left side of the housing 1, it flows through the hemispherical shroud 21, the spindle body 22, the tail contraction section 23 and the annular wing plate 24 in sequence, and then flows out from the right side of the housing 1. Due to the throttling effect, a differential pressure is formed in the upper part of the spindle body 22 and the annular cross-section flow channel. The flow rate of the fluid in the housing 1 is measured by measuring this differential pressure. At the same time, the temperature of the fluid in the housing 1 is monitored by the temperature sensor set on the temperature sensor tube seat 6.

[0026] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A compact spindal flow restriction device comprising: Shell (1), characterized in that the inside of the shell (1) is provided with a spindle throttling assembly (2); The spindle throttling assembly (2) comprises a spindle body (22), one end of the spindle body (22) is fixedly installed with a hemispherical fairing (21), the other end of the spindle body (22) is fixedly installed with a tail contraction section (23), and the other end of the tail contraction section (23) is provided with an annular wing plate (24).

2. A compact spindal flow restriction device according to claim 1, characterized in that The outer wall of both ends of the shell (1) is fixedly installed with a flange ring (3), and the flange ring (3) is provided with a mounting hole.

3. A compact spindal flow restriction device according to claim 1, characterized in that The outer wall of the shell (1) is fixedly installed with a high-pressure pressure-taking pipe (4) on the side wall of one end of the shell (1), and the outer wall of the other end of the shell (1) is fixedly installed with a temperature sensor pipe seat (6).

4. A compact spindal flow restriction device according to claim 3, characterized in that The outer wall of the temperature sensor pipe seat (6) is provided with a temperature sensor, and the outer wall of the shell (1) is fixedly installed with a low-pressure pressure-taking pipe (5).

5. A compact spindal flow restriction device according to claim 1, wherein The outer wall of the hemispherical fairing (21) and the outer wall of the tail contraction section (23) are both fixedly installed with a support plate (7).

6. A compact spindrel flow restriction device according to claim 5, wherein, The support plate (7) is fixedly installed on the inner wall of the shell (1).

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