阅读说明：本技术 一种可伸缩s型皮托管 (Telescopic S-shaped pitot tube ) 是由 钱惠国 刘伟 于 2020-04-26 设计创作，主要内容包括：本发明涉及一种可伸缩S型皮托管,包括皮托管内管、伸缩管体、软管和接管,所述伸缩管体由若干节直径不同的管段嵌套而成,所述皮托管内管、软管和接管分别由并排设置的全压管和静压管制成；所述皮托管内管的尾端固定设置在所述伸缩管体的最内节管段内,所述软管的两端分别与所述皮托管内管的尾端和所述接管的首端对接；所述接管尾端的全压管和静压管向相背离的方向弯曲,并分别形成全压检测口和静压检测口。本发明提供的可伸缩S型皮托管,可通过改变皮托管的长度来适应于不同长度的管道,此皮托管不受现实环境限制,便于携带,并可提高检测效率。(The invention relates to a telescopic S-shaped pitot tube, which comprises a pitot tube inner tube, a telescopic tube body, a hose and a connecting tube, wherein the telescopic tube body is formed by nesting a plurality of sections of tube sections with different diameters; the tail end of the pitot tube inner tube is fixedly arranged in the innermost section of the telescopic tube body, and two ends of the hose are respectively butted with the tail end of the pitot tube inner tube and the head end of the connecting tube; and the total pressure pipe and the static pressure pipe at the tail end of the connecting pipe are bent towards the direction of departure, and a total pressure detection port and a static pressure detection port are respectively formed. The telescopic S-shaped pitot tube provided by the invention can adapt to pipelines with different lengths by changing the length of the pitot tube, is not limited by a real environment, is convenient to carry and can improve the detection efficiency.)

1. A telescopic S-shaped pitot tube is characterized by comprising a pitot tube inner tube, a telescopic tube body, a hose and a connecting tube, wherein the telescopic tube body is formed by nesting a plurality of sections of tube sections with different diameters; the tail end of the pitot tube inner tube is fixedly arranged in the innermost section of the telescopic tube body, and two ends of the hose are respectively butted with the tail end of the pitot tube inner tube and the head end of the connecting tube; and the total pressure pipe and the static pressure pipe at the tail end of the connecting pipe are bent towards the direction of departure, and a total pressure detection port and a static pressure detection port are respectively formed.

2. The retractable S-pitot tube of claim 1 wherein a locking mechanism is provided between adjacent sections of said tube.

3. The retractable S-shaped pitot tube of claim 2, wherein between two adjacent sections of said tube, the outer wall of the tail end of the inner tube section is provided with an elastic protrusion, the inner wall of the head end of the outer tube section is provided with a groove, when said inner tube section retracts into said outer tube section, said elastic protrusion is compressed by said outer tube section and is separated from said groove; when the inner segment extends along the outer segment, the resilient projections may snap into the recesses.

4. The retractable S-shaped pitot tube of claim 2, wherein between two adjacent sections of said tube, the outer wall of the tail end of the inner tube section is provided with a groove, the inner wall of the head end of the outer tube section is provided with an elastic projection, when said inner tube section retracts into said outer tube section, said elastic projection is compressed by said inner tube section and separated from said groove; when the inner segment extends along the outer segment, the resilient projections may snap into the recesses.

5. The retractable S-shaped pitot tube of claim 1, wherein both ends of said hose are nested with the tail end of the inner tube of said pitot tube and the head end of said nipple, respectively.

6. The retractable S-shaped pitot tube as claimed in claim 1, wherein at the butt joint, a plurality of grooves are formed at intervals around the tube wall at the two ends of the hose, and a plurality of bosses are formed at intervals around the corresponding tail end of the inner tube of the pitot tube and the head end of the connecting tube.

7. The retractable S-shaped pitot tube of claim 1, wherein after the two ends of the hose are respectively connected with the tail end of the inner tube of the pitot tube and the head end of the connecting tube, the total pressure tubes of the hose, the pitot tube and the connecting tube are communicated and have the same inner diameter, and the static pressure tubes of the hose, the pitot tube and the connecting tube are communicated and have the same inner diameter.

8. The retractable S-shaped pitot tube as claimed in claim 1, wherein elastic sealing gaskets are provided at the joints of the two ends of the hose and the tail end of the inner tube of the pitot tube and the head end of the adapter tube, respectively.

9. The retractable S-shaped pitot tube of claim 1, further comprising a fixing plate, wherein the hose penetrates through the fixing plate, and the fixing plate is fixedly connected with the tail of the retractable tube after the retractable tube is extended to a desired length.

10. The retractable S-shaped pitot tube of claim 1, wherein the full pressure test port and the static pressure test port are connected to a test instrument through rubber tubes.

Technical Field

The invention relates to the technical field of S-shaped pitot tubes, in particular to a telescopic S-shaped pitot tube.

Background

In scientific research, production, teaching, environmental protection, tunnel, mine ventilation and energy management departments, pitot tubes are commonly used for measuring the air flow velocity in ventilation pipelines, industrial pipelines and furnace and kiln flues, and the flow is determined by conversion, and the water flow velocity in the pipelines can also be measured. In actual work, the length of the required pitot tube is different due to different inner diameters of pipelines, and in addition, the pitot tube required by a longer pipeline is longer, so that the pitot tube is inconvenient to carry and transport and brings great difficulty to test, and therefore the telescopic S-shaped pitot tube is invented.

Disclosure of Invention

The invention aims to provide a telescopic S-shaped pitot tube, which can adapt to pipelines with different lengths by changing the length of the pitot tube, is not limited by a real environment, is convenient to carry and can improve the detection efficiency.

In order to solve the problems, the invention provides a telescopic S-shaped pitot tube, which comprises a pitot tube inner tube, a telescopic tube body, a hose and a connecting tube, wherein the telescopic tube body is formed by nesting a plurality of sections of tube sections with different diameters; the tail end of the pitot tube inner tube is fixedly arranged in the innermost section of the telescopic tube body, and two ends of the hose are respectively butted with the tail end of the pitot tube inner tube and the head end of the connecting tube; and the total pressure pipe and the static pressure pipe at the tail end of the connecting pipe are bent towards the direction of departure, and a total pressure detection port and a static pressure detection port are respectively formed.

Preferably, a locking mechanism is arranged between two adjacent sections of the pipe sections.

Preferably, between two adjacent sections of the pipe sections, an elastic bulge is arranged on the outer wall of the tail end of the inner pipe section, a groove is arranged on the inner wall of the head end of the outer pipe section, and when the inner pipe section retracts into the outer pipe section, the elastic bulge is compressed by the outer pipe section and is separated from the groove; when the inner segment extends along the outer segment, the resilient projections may snap into the recesses.

Preferably, between two adjacent sections of the pipe sections, a groove is formed in the outer wall of the tail end of the inner pipe section, an elastic bulge is formed in the inner wall of the head end of the outer pipe section, and when the inner pipe section retracts into the outer pipe section, the elastic bulge is compressed by the inner pipe section and is separated from the groove; when the inner segment extends along the outer segment, the resilient projections may snap into the recesses.

Preferably, two ends of the hose are respectively nested with the tail end of the pitot tube inner tube and the head end of the connecting tube.

Preferably, at the butt joint, a plurality of grooves are formed in the pipe wall at two ends of the hose at intervals, and a plurality of bosses nested with the grooves are formed in the tail end of the corresponding pitot tube inner pipe and the head end of the connecting pipe at intervals.

Preferably, after the two ends of the hose are respectively butted with the tail end of the pitot tube inner tube and the head end of the connecting tube, the total pressure tubes of the hose, the pitot tube inner tube and the connecting tube are communicated and have the same inner diameter, and the static pressure tubes of the hose, the pitot tube inner tube and the connecting tube are communicated and have the same inner diameter.

Preferably, the joint between the two ends of the hose and the tail end of the pitot tube inner tube and the head end of the connecting tube is provided with an elastic sealing gasket.

Preferably, the telescopic tube further comprises a fixing plate, the hose penetrates through the fixing plate, and after the telescopic tube body extends to a required length, the fixing plate is fixedly connected with the tail of the telescopic tube body.

Preferably, the full pressure detection port and the static pressure detection port are respectively connected with a test instrument through rubber pipes.

Compared with the prior art, the invention has the following technical effects:

the invention can be suitable for pipelines with different lengths, can be contracted into different lengths, has good universality and improves the testing efficiency, and the pipe diameters of the stainless steel inner pipe and the stainless steel connecting pipe after being connected with the hose made of special materials are the same, thereby improving the testing accuracy.

The hose provided by the invention is high-temperature resistant, wear resistant, convenient to carry, simple to manufacture, and capable of being arranged in a protective box customized for the fit of the hose, so that the hose is convenient for workers to maintain, maintain and replace.

The self-locking mechanism in the telescopic pipe body provided by the invention can be well attached to adjacent pipe sections, and is not easy to wear, so that the service life of the telescopic pipe body is greatly prolonged.

The invention can be combined into any length to achieve the practical application of engineering, and has the advantages of convenient carrying, convenient use and high accuracy.

Drawings

FIG. 1 is a cross-sectional view of a retractable S-shaped pitot tube according to a preferred embodiment of the present invention;

FIG. 2 is a partial cross-sectional view of a retractable S-shaped pitot tube according to a preferred embodiment of the present invention;

FIG. 3 is an enlarged view of a section of FIG. 2;

fig. 4 is a sectional view of a fixing plate according to a preferred embodiment of the present invention.

Detailed Description

The following detailed description is made with reference to the accompanying drawings, which illustrate an embodiment.

Referring to fig. 1 to 4, a telescopic S-shaped pitot tube includes a pitot tube inner tube 1, a telescopic tube body 2, a hose 4 and a connection tube 5, wherein the telescopic tube body 2 is formed by nesting a plurality of tube sections with different diameters, and the pitot tube inner tube 1, the hose 4 and the connection tube 5 are respectively made of a total pressure tube and a static pressure tube which are arranged side by side; the tail end of the pitot tube inner tube 1 is fixedly arranged in the innermost section of the telescopic tube body 2, and two ends of the hose 4 are respectively butted with the tail end of the pitot tube inner tube 1 and the head end of the connecting tube 5; the total pressure pipe and the static pressure pipe at the tail end of the connecting pipe 5 are bent towards the opposite directions, and a total pressure detection port 51 and a static pressure detection port 52 are formed respectively.

In this embodiment, the pitot tube inner tube 1 is a stainless steel inner tube, which is made of two semicircular tubes with the same diameter in the opposite direction, the windward direction is a total pressure tube, and the leeward direction is a static pressure tube.

The hose 4 is made of a high-temperature-resistant and abrasion-resistant special material, is also made of two semicircular pipes with the same diameter in a back-to-back mode, and is spliced with the stainless steel inner pipe 1, so that a total pressure pipe and a static pressure pipe of the hose are correspondingly connected. The length of the hose 4 is determined according to the length of the manufactured telescopic tube body 2, and the longer the length of the telescopic tube body 2 after being extended, the longer the length of the hose 4 is required, and vice versa.

The connecting pipe 5 is made of a stainless steel connecting pipe, is also made of two semicircular pipes with the same diameter in a back-to-back mode, is separated from the tail end and is bent so as to be connected with a testing instrument, and the testing accuracy is guaranteed.

In arranging flexible body 2 in (in the innermost section of flexible body 2) after stainless steel inner tube 1 splices with hose 4, reach the extension of S type pitot tube through flexible 2, flexible body 2 is through fixed, can make pressure tapping and fluid flow direction parallel relatively, guarantees the accuracy of test result to guarantee the stability of pitot tube.

The outer wall of the stainless steel inner pipe 1 is fixedly connected with the inner wall of the innermost section of the telescopic pipe body 2 through welding, so that the telescopic pipe is convenient to stretch.

The telescopic pipe body 2 is made of a telescopic pipe formed by nesting a plurality of stainless steel pipes with different diameters, and can be easily realized by a person skilled in the art, and the detailed description is omitted. The stainless steel tube is high temperature resistant, is not easy to bend and damage, and is not easy to be influenced by the environment when in fluid test. And a locking mechanism is arranged between two adjacent sections of the pipe sections to prevent the inner section of the pipe section from separating from the outer section of the pipe section in the stretching process. The locking mechanism is also a mature technology in the telescopic tube body 2, and the present invention is not particularly limited thereto.

As an embodiment, please refer to fig. 3, between two adjacent sections of the pipe sections, an elastic protrusion 22 is disposed on an outer wall of a tail end of an inner section of the pipe section, and a groove 21 is disposed on an inner wall of a head end of an outer section of the pipe section, when the inner section of the pipe section retracts into the outer section of the pipe section, the elastic protrusion 22 is compressed by the outer section of the pipe section and is separated from the groove; the resilient projections 22 may snap into the recesses 21 when the inner segment is extended along the outer segment.

As another embodiment, between two adjacent sections of the pipe sections, a groove is formed on the outer wall of the tail end of the inner section pipe section, an elastic bulge is formed on the inner wall of the head end of the outer section pipe section, and when the inner section pipe section retracts into the outer section pipe section, the elastic bulge is compressed by the inner section pipe section and is separated from the groove; when the inner segment extends along the outer segment, the resilient projections may snap into the recesses.

In this embodiment, referring to fig. 2 and fig. 3, two ends of the hose 4 are respectively nested with the tail end of the pitot tube inner tube 1 and the head end of the adapter tube 5. Furthermore, at the butt joint, a plurality of grooves 41 are formed at intervals on the circumference of the tube wall at the two ends of the hose 4, and a plurality of bosses 11 are formed at intervals on the circumference of the tail end of the corresponding pitot tube inner tube 1 and the head end of the connecting tube 5. In this embodiment, after the two ends of the hose 4 are respectively butted with the tail end of the pitot tube inner tube 1 and the head end of the connecting tube 5, the total pressure tubes of the three are communicated and have the same inner diameter, and the static pressure tubes of the three are communicated and have the same inner diameter, so that the fluid is ensured to flow through the same tube diameter, and the accuracy of the test is improved.

In this embodiment, the joints between the two ends of the hose 4 and the tail end of the pitot tube inner tube 1 and the head end of the adapter tube 5 are respectively provided with an elastic sealing washer, so that fluid leakage is prevented, and the sealing performance is ensured.

In the invention, the hose 4 is not only high temperature resistant and wear resistant, but also convenient to carry and simple to manufacture, can be arranged in a protective box customized for the body, and is convenient for workers to maintain, maintain and replace. The invention can be suitable for pipelines with different lengths, can be contracted into different lengths, has good universality and improves the testing efficiency, and the pipe diameters of the stainless steel inner pipe 1 and the stainless steel connecting pipe 5 are the same after being connected with the hose 4 made of special materials, thereby improving the testing accuracy. And the inside locking mechanical system of taking certainly of telescopic tube body 2 can with adjacent pipeline section fine laminating, difficult wearing and tearing for telescopic tube body 2 life-span prolongs greatly. The invention can be combined into any length to achieve the practical application of engineering, and has the advantages of convenient carrying, convenient use and high accuracy.

In this embodiment, please refer to fig. 4, further comprising a fixing plate 3, wherein the hose 4 penetrates through the fixing plate 3. Specifically, a through hole 51 for the hose 4 to pass through is formed in the middle of the fixing plate 3, so that the hose 4 can be conveniently stretched and moved along with the extension of the telescopic tube body 2 during testing, and then the fixing plate 3 and the telescopic tube body 2 are welded. The material and shape of the fixing plate 3 are not particularly limited in the present invention, and the circular stainless steel plate is taken as an example in the present embodiment.

In the invention, the stainless steel inner pipe 1 and the hose 4 are butted to form the most main pitot tube body (namely a real pipeline for testing), when the telescopic pipe body 2 is contracted to the minimum length, most of the hose 4 is outside the telescopic pipe body 2, and a small part of the hose 4 is inside the telescopic pipe body 2, when the telescopic pipe body 2 is expanded, the hose 4 enters the inside of the telescopic pipe body 2 along with the expansion of the telescopic pipe body 2, thereby achieving the extension of the most main pitot tube body. During testing, the hose 4 can be protected to a certain extent inside the telescopic tube body 2. The full-pressure detection port 51 and the static-pressure detection port 52 are respectively connected with a test instrument through rubber pipes, and then the fluid flow rate detection can be completed.

The disclosure above is only one specific embodiment of the present application, but the present application is not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present application.