Pipeline air pressure detection device

Abstract

The utility model relates to the technical field of pipeline air pressure detection, in particular to a pipeline air pressure detection device, which comprises a detection pipe, the top of the detection pipe is fixedly connected with a connecting pipe, the top of the connecting pipe is provided with a detection device body, the detection device body comprises a mounting pipe, the top of the mounting pipe is fixedly connected with an air pressure gauge, and the air pressure gauge is fixedly connected with the air pressure gauge. A hard air pressure conduction pipe is fixedly connected to the bottom of the inner wall of the connecting pipe, a soft rubber pipe is fixedly connected to the surface of the hard air pressure conduction pipe, and connecting structures are arranged on the two sides of the detection pipe. According to the utility model, the detection device body, the hard air pressure conduction pipe and the soft rubber pipe are arranged, so that the self-cleaning and anti-blocking functions of the air pressure conduction channel can be realized to a certain extent, and the continuity of air pressure monitoring can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline air pressure detection, and particularly relates to a pipeline air pressure detection device. Background Art

[0002] For train sewage unloading systems, performing negative pressure testing on the branch pipes where each sewage unloading unit is located is a relatively difficult task. The difficulty lies in the fact that the fluid flowing in the pipe is a mixture of gas, liquid, and solid, which can easily clog the negative pressure transmission channel of the negative pressure sensor or negative pressure gauge. This can cause the negative pressure sensor or negative pressure gauge to fail to detect negative pressure, or the negative pressure detection is inaccurate, requiring frequent unblocking of the negative pressure transmission channel. In this case, adding a negative pressure detection device may even cause more trouble than it provides convenience.

[0003] In the train sewage unloading system, the negative pressure transmission channel of the air pressure sensor or barometer is easily blocked by the gas-liquid-solid three-phase mixture fluid, causing the air pressure sensor or barometer to fail. Therefore, we proposed a pipeline air pressure detection device. Utility Model Content

[0004] In order to overcome the above-mentioned technical problems, the purpose of the present utility model is to provide a pipeline air pressure detection device to solve the problem raised in the above-mentioned background technology that in the train sewage unloading system, the negative pressure conduction channel of the air pressure sensor or barometer is easily blocked by the gas-liquid-solid three-state mixture fluid, resulting in failure of the air pressure sensor or barometer.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pipeline air pressure detection device, comprising a detection tube, a connecting tube fixedly connected to the top of the detection tube, a detection device body provided on the top of the connecting tube, the detection device body comprising a mounting tube, a pressure gauge fixedly connected to the top of the mounting tube, a hard air pressure conduction tube fixedly connected to the bottom of the inner wall of the connecting tube, a soft rubber hose fixedly connected to the surface of one end of the head of the hard air pressure conduction tube, sewage discharge pipes provided on both sides of the detection tube, and the mounting tube connected to the surface of the connecting tube by threads.

[0006] Preferably, the soft rubber hose is divided into two sections, a connecting section and a non-connecting section. The connecting section is sleeved on the outer surface of one end of the head of the hard air pressure transmission tube, and the non-connecting section is in a soft state that can swing freely. The non-connecting section has sufficient length to extend downward in the direction of the fluid into the connecting tube, and the angle between the non-connecting section and the vector direction of the fluid is less than ninety degrees.

[0007] Preferably, when the fluid passes through the connecting pipe, the fluid drives the non-connecting section of the soft rubber hose to swing or vibrate, thereby discharging foreign matter blocked in the soft rubber hose.

[0008] Compared with the prior art, the beneficial effects of the present invention are:

[0009] The pipeline air pressure detection device is provided with a detection device body, a hard air pressure transmission tube and a soft rubber hose. The soft rubber hose is used as the head of the hard air pressure transmission tube, and the soft rubber hose is extended into the three-phase mixture fluid of gas, liquid and solid. The soft rubber hose is stirred by the fluid flow, causing the soft rubber hose to vibrate and swing. The blockage in the soft rubber hose will be separated from the soft rubber hose as the soft rubber hose vibrates and swings, and is carried away by the fluid. The self-cleaning and anti-blocking functions of the air pressure transmission channel can be realized to a certain extent, which is beneficial to improving the continuity of air pressure monitoring and is relatively convenient to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic front view of the structure of the utility model;

[0011] Figure 2 It is a front cross-sectional view of the local structure of the utility model.

[0012] In the figure: 1. Detection tube; 2. Connecting tube; 3. Detection device body; 31. Mounting tube; 32. Pressure gauge; 4. Hard air pressure transmission tube; 5. Soft rubber hose; 6. Sewage discharge pipe. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0014] See also Figure 1-2 , an embodiment provided by the utility model:

[0015] A pipeline air pressure detection device includes a detection tube 1, characterized in that: the top of the detection tube 1 is fixedly connected to a connecting tube 2, the top of the connecting tube 2 is provided with a detection device body 3, the detection device body 3 includes a mounting tube 31, the top of the mounting tube 31 is fixedly connected to a pressure gauge 32, the bottom of the inner wall of the connecting tube 2 is fixedly connected to a hard air pressure transmission tube 4, the surface of one end of the head of the hard air pressure transmission tube 4 is fixedly connected to a soft rubber hose 5, and sewage discharge pipes 6 are provided on both sides of the detection tube 1. The mounting tube 31 is connected to the surface of the connecting tube 2 by threads. A detection device body 3, a hard air pressure transmission tube 4 and a soft rubber tube 5 are provided. The soft rubber tube 5 is used as the head of the hard air pressure transmission tube 4, and the soft rubber tube 5 is extended into the gas, liquid and solid three-phase mixture fluid. The soft rubber tube 5 is stirred by the fluid flow, causing the soft rubber tube 5 to vibrate and swing. The blockage in the soft rubber tube 5 will be separated from the soft rubber tube 5 as the soft rubber tube 5 vibrates and swings, and is carried away by the fluid. The self-cleaning and anti-blocking functions of the air pressure transmission channel can be realized to a certain extent, which is beneficial to improving the continuity of air pressure monitoring and is relatively convenient to install.

[0016] Furthermore, the soft rubber hose 5 is divided into a connecting section and a non-connecting section. The connecting section is sleeved on the outer surface of one end of the head of the hard air pressure transmission tube 4, and the non-connecting section is in a soft state that can swing freely. The non-connecting section has sufficient length to extend downwardly along the direction of the fluid into the connecting tube 2. The angle between the non-connecting section and the vector direction of the fluid is less than 90 degrees. The soft rubber hose 5 is extended into the gas, liquid and solid three-phase mixture fluid, and the fluid flow stirs the soft rubber hose 5, causing the soft rubber hose 5 to vibrate and swing.

[0017] Furthermore, when the fluid passes through the connecting pipe 2, the fluid drives the non-connected section of the soft rubber hose 5 to swing or vibrate, thereby discharging foreign matter blocked in the soft rubber hose 5. The soft rubber hose 5 is stirred by the fluid flow, causing the soft rubber hose 5 to vibrate and swing, and the blockage in the soft rubber hose 5 will be detached from the soft rubber hose 5 as the soft rubber hose 5 vibrates and swings.

[0018] Working principle: When the fluid flows continuously or intermittently along the pipe on one side of the detection tube 1 toward the pipe on the other side, the soft rubber hose 5 is driven by the fluid to vibrate or swing. If the soft rubber hose 5 is blocked by debris in the fluid, the blockage will detach from the soft rubber hose 5 when the soft rubber hose 5 vibrates or swings, and be carried away from the detection tube 1 by the fluid, thereby realizing the self-cleaning and anti-blocking functions of the air pressure conduction channel. The utility model can be used for negative pressure monitoring of train vacuum unloading units, and can also be used for pressure detection of liquid or gaseous fluids in other pipelines. It is particularly suitable for occasions where the fluid contains a lot of impurities and is prone to blocking the pressure detection conduction channel.

[0019] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A pipeline air pressure detection device, comprising a detection tube (1), characterized in that: The top of the detection tube (1) is fixedly connected to a connecting tube (2), the top of the connecting tube (2) is provided with a detection device body (3), the detection device body (3) includes a mounting tube (31), the top of the mounting tube (31) is fixedly connected to a pressure gauge (32), the bottom of the inner wall of the connecting tube (2) is fixedly connected to a hard air pressure transmission tube (4), the surface of one end of the head of the hard air pressure transmission tube (4) is fixedly connected to a soft rubber hose (5), sewage discharge pipes (6) are provided on both sides of the detection tube (1), and the mounting tube (31) is connected to the surface of the connecting tube (2) by threads.

2. A pipeline air pressure detection device according to claim 1, characterized in that: The soft rubber hose (5) is divided into two sections, a connecting section and a non-connecting section. The connecting section is sleeved on the outer surface of one end of the head of the hard air pressure transmission tube (4). The non-connecting section is in a soft state that can swing freely. The non-connecting section has sufficient length to extend downwardly along the direction of the fluid into the connecting tube (2). The angle between the non-connecting section and the vector direction of the fluid is less than ninety degrees.

3. A pipeline air pressure detection device according to claim 2, characterized in that: When the fluid passes through the connecting pipe (2), the fluid drives the non-connected section of the soft rubber hose (5) to swing or vibrate, thereby discharging foreign matter blocked in the soft rubber hose (5).

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