阅读说明：本技术 一种管道排气检测方法 (Pipeline exhaust detection method ) 是由 王武 于 2019-09-03 设计创作，主要内容包括：本发明属于管道检测技术,具体涉及一种用于检测复杂壳体通道内排气是否通畅的方法。本发明管道排气检测方法,设置与待测通道相连通的一检测通道,该待测通道和检测通道均与进气口连通,排除其余排气口,在检测通道上连接流量计,当流量计测到气体流量,则该待测通道排气不畅,否则,待测通道排气顺畅。本发明方法可以方便、准确的判断产品内部复杂通道的排气通畅情况,可以有效筛检出不合格产品,提高产品检验合格率,极大的减少了后续因装配不合格产品带来的损失,经试验证明,能100％检查出不合格壳体,具有较大实际应用价值。(The invention belongs to the technology of pipeline detection, and particularly relates to a method for detecting whether exhaust in a complex shell channel is smooth or not. The invention relates to a pipeline exhaust detection method, which comprises the steps of arranging a detection channel communicated with a channel to be detected, wherein the channel to be detected and the detection channel are both communicated with an air inlet, removing other exhaust ports, connecting a flowmeter on the detection channel, and when the flowmeter detects the flow of gas, the channel to be detected is not smooth in exhaust, otherwise, the channel to be detected is smooth in exhaust. The method can conveniently and accurately judge the smooth exhaust condition of the complex channel in the product, can effectively screen out unqualified products, improves the inspection qualified rate of the products, greatly reduces the loss caused by the subsequent assembly of unqualified products, can detect the unqualified shell by 100 percent as proved by tests, and has great practical application value.)

1. A pipeline exhaust detection method is characterized in that a detection channel communicated with a channel to be detected is arranged, the channel to be detected and the detection channel are both communicated with an air inlet, other exhaust ports are eliminated, a flow meter is connected to the detection channel, when the flow meter detects the flow of gas, the channel to be detected is not smooth in exhaust, and otherwise, the channel to be detected is smooth in exhaust.

2. The method as claimed in claim 1, wherein after the detection of one channel to be detected is completed, the outlet of the channel is sealed, the exhaust port of another channel to be detected is opened, the flow meter is connected, and the rest exhaust ports are sealed, and whether the flow meter can detect the gas flow rate is still used to determine the smoothness of the exhaust of the channel to be detected.

3. The method for detecting exhaust gas of pipeline according to claim 1, wherein when there is only one exhaust port in the channel to be detected, the detecting channel is a channel communicated with the channel to be detected, and the flow meter is connected to detect the smoothness of the exhaust gas in the rear section of the channel to be detected.

4. The pipeline exhaust gas detection method according to claim 1, wherein the flow meter connection port is a rubber hose and is in sealed connection with the channel to be detected.

5. The method for detecting exhaust gas in a pipeline according to claim 5, wherein adapter tubes suitable for exhaust ports of different sizes are sleeved on the flow meter connecting ports.

6. The pipeline exhaust gas detection method according to claim 1, wherein the flow meter flow is 0-5L/min.

7. The pipeline exhaust gas detection method according to claim 6, wherein the flow meter process is 0-1L/min.

8. The method of claim 6, wherein the inlet input gas flow rate is 1.0L/min to 5L/min.

9. The duct exhaust detection method according to claim 5, wherein a pressure reducer and a flow restrictor are provided at the air inlet.

Technical Field

The invention belongs to the technology of pipeline detection, and particularly relates to a method for detecting whether exhaust in a complex shell channel is smooth or not.

Background

At present, a regulator of a certain model has a large amount of air leakage of products, and the reason for the air leakage is found to be caused by unsmooth exhaust of a shell. Through analysis, the product has the defects of complex structure, large quantity of internal pipelines, high processing difficulty, large quantity of crossed holes, burrs, gaps, dislocation and the like in the internal pipelines of the product. The blockage is easy to happen, so that the air flow in the product can not be smoothly discharged, and various hidden dangers are caused.

Disclosure of Invention

The purpose of the invention is: the method for rapidly and accurately detecting whether the inner pipeline is unobstructed is provided.

The technical scheme of the invention is as follows: a pipeline exhaust detection method is characterized in that a detection channel communicated with a channel to be detected is arranged, the channel to be detected and the detection channel are both communicated with an air inlet, other exhaust ports are eliminated, a flow meter is connected to the detection channel, when the flow meter detects the flow of gas, the channel to be detected is not smooth in exhaust, otherwise, the channel to be detected is smooth in exhaust.

After one channel to be detected is detected, the outlet of the channel is sealed, the exhaust port of the other channel to be detected is opened, the flowmeter is connected, the rest exhaust ports are sealed, and whether the flowmeter can detect the gas flow or not is still utilized to judge the smoothness of the exhaust of the channel to be detected.

When only one exhaust port of the channel to be detected is arranged, the detection channel is a channel communicated with the channel to be detected and is connected with the flowmeter so as to detect the smooth exhaust of the rear section of the channel to be detected.

The flowmeter connecting port is a rubber hose and is hermetically connected with the channel to be detected.

The flowmeter connector is sleeved with a switching tube suitable for exhaust ports of different sizes.

The flow of the flowmeter is 0-5L/min.

The flow of the flowmeter is 0-1L/min.

The flow rate of the gas input by the gas inlet is 1.0L/min-5L/min.

A pressure reducer and a flow restrictor are arranged at the air inlet.

The invention has the advantages that: according to the pipeline exhaust detection method, the other exhaust ports are sealed, only the channel to be detected and the detection channel are left, the flow meter is arranged in the detection channel, and whether the channel to be detected is blocked or not is quickly and accurately judged by detecting whether airflow exists or not through the flow meter. The method can conveniently and accurately judge the smooth exhaust condition of the complex channel in the product, can effectively screen out unqualified products, improves the inspection qualified rate of the products, greatly reduces the loss caused by the assembly of the unqualified products in the follow-up process, and can check out the unqualified shell by 100 percent proved by tests.

Drawings

Fig. 1 is a schematic view of the distribution of pipes in a method for detecting exhaust gas in pipes according to an embodiment of the present invention.

Figure 2 is a schematic view of a flow meter configuration,

wherein, 1-nozzle 2-shell channel air outlet 3-valve 4-diaphragm 5-nozzle 6-hose 7-flowmeter 8-tester 9-current limiter.

Detailed Description

The present invention is described in further detail below.

The invention relates to a pipeline exhaust detection method, which is characterized in that a detection channel communicated with a channel to be detected is arranged, the channel to be detected and the detection channel are both communicated with an air inlet, other exhaust ports are eliminated, a flow meter is connected to the detection channel, when the flow meter detects the flow of gas, the channel to be detected is not smooth in exhaust, otherwise, the channel to be detected is smooth in exhaust.

After one channel to be detected is detected, the outlet of the channel is sealed, the exhaust port of the other channel to be detected is opened, the flowmeter is connected, the rest exhaust ports are sealed, and whether the flowmeter can detect the gas flow or not is still utilized to judge the smoothness of the exhaust of the channel to be detected.

When only one exhaust port of the channel to be detected is arranged, the detection channel is a channel communicated with the channel to be detected and is connected with the flowmeter so as to detect the smooth exhaust of the rear section of the channel to be detected.

The pipeline exhaust detection method only has the to-be-detected channel and the detection channel left by sealing the rest exhaust ports, and the flowmeter is arranged in the detection channel, so that whether the to-be-detected channel is blocked or not is quickly and accurately judged by detecting whether airflow exists or not through the flowmeter.

In an embodiment, referring to fig. 1, a schematic structural diagram of a product to be tested, a regulator of a certain type, is given. In the figure, the distribution of the internal complex pipeline is given, wherein the nozzle 1 is divided into three paths, which are respectively communicated with the cavity A, the cavity B and the cavity P. Wherein, the area of the A cavity forms a first channel, and the outlet of the A cavity is the valve 3. The area of the cavity B is a second channel, and the outlet of the cavity B is a shell channel air outlet hole 2. The cavity A and the cavity B are isolated by a diaphragm 4 and a valve 3. The P cavity is communicated with the L1 cavity and the L2 cavity and is provided with a joint nozzle 5 to form a third channel.

In this embodiment, the pipeline detection method of the present invention needs to detect three channels of the cavity a, the cavity B, and the cavity P, respectively, and the process is as follows:

first, first channel detection

1. Connecting the shell: connecting the shell nozzle 1 with a test device for inputting gas by using a transition nozzle;

2. setting a channel: blocking the connecting nozzle 5, detaching the diaphragm 4, and communicating the hose 6 with the air outlet hole 2 of the shell channel;

3. input pressure: opening an air inlet switch, and inputting 1.0-1.5L/min of oxygen or nitrogen into the connecting nozzle 1 through a pressure reducer;

4. detection with the flow meter 7: the gas is through A chamber and B chamber, and wherein, A chamber passageway is the first passageway that awaits measuring, and B chamber is for being provided with flowmeter 7's detection passageway, and if flowmeter 7 reading is 0 then the first passageway of casing is discharged smoothly, if have the flow reading, then think that the first passageway of casing is discharged smoothly.

Second, second channel detection

1. Connecting the shell: connecting the shell nozzle 1 with a test device for inputting gas by using a transition nozzle;

2. setting a channel: the valve 3 blocks the cavity A, the membrane 4 is disassembled, and the hose 6 is communicated with the nozzle 5;

3. input pressure: opening an air inlet switch, and inputting 1.0-1.5L/min of oxygen or nitrogen into the connecting nozzle 1 through a pressure reducer;

4. detection with the flow meter 7: the gas is through B chamber and P chamber, and wherein, B chamber passageway is the second passageway that awaits measuring, and the P chamber is for being provided with flowmeter 7's detection passageway, and if flowmeter 7 reading is 0 then casing second passageway exhaust unobstructed, if have the flow reading, then think that casing second passageway exhaust is not smooth.

Third, third channel detection

1. Connecting the shell: connecting the shell nozzle 1 with a test device for inputting gas by using a transition nozzle;

2. setting a channel: the valve 7 blocks the cavity A, the diaphragm 4 is disassembled, and the hose 6 is communicated with the air outlet hole 2 of the shell channel;

3. input pressure: opening an air inlet switch, and inputting 1.0-1.5L/min of oxygen or nitrogen into the connecting nozzle 1 through a pressure reducer;

4. detection with the flow meter 7: and the gas flows into a cavity B and a cavity P, wherein the cavity P is a third channel to be detected, the cavity B is a detection channel provided with a flowmeter 7, if the reading of the flowmeter 7 is 0, the third channel of the shell exhausts smoothly, and if the reading of the flow rate is 0, the third channel of the shell exhausts smoothly.

In conclusion, the method can conveniently and accurately judge the smooth exhaust condition of the complex channel in the product, can effectively screen out unqualified products, improves the inspection qualified rate of the product, can detect 100% blocked unqualified shells through tests, greatly reduces the loss caused by the subsequent assembly of unqualified products, and has great practical application value.