Low-pressure carburizing control pipeline

Abstract

The utility model provides a low-pressure carburizing control pipeline. The low-pressure carburizing control pipeline comprises a hand valve, a mass flow meter, a pipeline, an inflow three-way pipe, an outflow three-way pipe and an electromagnetic valve. Two ends of the inflow three-way pipe are respectively communicated with an acetylene gas outlet of the hand valve and an acetylene gas inlet of the mass flowmeter through pipelines, and the other end of the inflow three-way pipe is connected with an acetylene gas inlet of the electromagnetic valve; one end of the outflow three-way pipe is communicated with an acetylene gas outlet of the electromagnetic valve through a pipeline, and the other end is communicated with an acetylene gas outlet of the mass flowmeter; and a flow sensor is arranged in the electromagnetic valve and is in communication connection with the mass flow meter, and the distance between the flow sensor and the mass flow meter is 5 cm to 1 dm. According to the scheme, the mass flow meter is used for detecting the mass of acetylene gas to prevent the acetylene gas from being polluted, and the electromagnetic valve capable of communicating with the mass flow meter is arranged through the bypass to accurately control the flow of the acetylene gas, so that the gas injection amount can be controlled according to actual requirements, acetylene gas resources are saved, the process cost is reduced, and the production efficiency is improved. The problem that in the carburizing process in the prior art, the gas injection amount cannot be accurately controlled is solved.

Description

Technical Field

[0001] The present application relates to the technical field of equipment manufacturing, and in particular to a control pipeline. Background Art

[0002] With the continuous upgrading of the domestic industrial equipment industry, the performance requirements for workpieces are getting higher and higher. In order to improve the performance indicators of workpieces, the requirements for carburizing processes are getting higher and higher. Among them, low-pressure carburizing is a more popular surface treatment method. In the processing of different workpieces, the jet volume is not the same. In the traditional carburizing process, the jet treatment process is often manually controlled, which leads to the inability to accurately control the jet volume according to the workpiece or requirements, which easily causes the waste of acetylene gas and increases the cost of the process. Acetylene gas pollution cannot be prevented during the jet process, affecting the carburizing effect of the workpiece. Utility Model Content

[0003] An object of the present application is to provide a low-pressure carburizing control pipeline to solve at least one of the above-mentioned problems.

[0004] The present application provides a low-pressure carburizing control pipeline, comprising: a hand valve, a mass flow meter and a pipeline, wherein the mass flow meter is provided with a mass sensor and a flow sensor, and is characterized in that it also comprises:

[0005] Inflow tee, outflow tee and solenoid valve;

[0006] The two ends of the inflow three-way pipe are connected to the acetylene gas outlet of the hand valve and the acetylene gas inlet of the mass flow meter through pipelines, and the other end is connected to the acetylene gas inlet of the solenoid valve;

[0007] One end of the outflow three-way pipe is connected to the acetylene gas outflow outlet of the solenoid valve through a pipeline, and the other end is connected to the acetylene gas outflow outlet of the mass flow meter;

[0008] The mass flow meter is provided with two flow sensor signal interfaces;

[0009] Another flow sensor is arranged in the solenoid valve, and the other flow sensor is communicatively connected with the mass flow meter. The distance between the solenoid valve and the mass flow meter is between 5 cm and 1 decimeter.

[0010] Preferably, an acetylene gas detection sensor is provided at the other end of the outflow tee pipe, and the acetylene gas detection sensor is communicatively connected with the flow mass meter;

[0011] The mass flow meter is provided with a signal interface for receiving the signal of the acetylene gas detection sensor.

[0012] Preferably, the distance between the outflow tee and the mass flow meter is between 0.2 meters and 1.3 meters.

[0013] Preferably, a diameter error between a pipe connecting the inflow tee and the solenoid valve and a pipe connecting the inflow tee and the mass flowmeter is less than or equal to 0.2 mm.

[0014] Preferably, an acetylene gas pump is further included, the acetylene gas inlet of the hand valve is connected to the acetylene gas outlet of the acetylene gas pump through a pipeline, and the acetylene gas pump is communicatively connected to the mass flow meter.

[0015] Preferably, the acetylene gas outlet of the hand valve is provided with a filter flange, which is connected to the pipeline through the filter flange, and the filter flange has a stainless steel filter screen, and the stainless steel filter screen has a mesh size between 100 and 150.

[0016] Compared with the prior art, the present application provides a low-pressure carburizing control pipeline, comprising: a hand valve, a mass flowmeter and a pipeline, the mass flowmeter is provided with a mass sensor and a flow sensor, and also comprises: an inflow tee, an outflow tee and a solenoid valve; the two ends of the inflow tee are respectively connected to the acetylene gas flow outlet of the hand valve and the acetylene gas flow inlet of the mass flowmeter through a pipeline, and the other end is connected to the acetylene gas flow inlet of the solenoid valve; one end of the outflow tee is connected to the acetylene gas flow outlet of the solenoid valve through a pipeline, and the other end is connected to the acetylene gas flow outlet of the mass flowmeter; the mass flowmeter is provided with two flow sensor signal interfaces; another flow sensor is provided in the solenoid valve, and the other flow sensor is communicatively connected to the mass flowmeter, and the distance between the solenoid valve and the mass flowmeter is between 5 cm and 1 decimeter. This solution detects the quality of acetylene gas by using a mass flow meter to prevent its contamination, and accurately controls the flow of acetylene gas by setting a solenoid valve that can communicate with the mass flow meter in a bypass, so that the injection volume can be controlled according to actual needs, saving acetylene gas resources, thereby reducing process costs and solving the problem that the injection volume cannot be accurately controlled in the carburizing process in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0018] Figure 1 This is a schematic diagram of one embodiment of the low-pressure carburizing control pipeline described in the present application.

[0019] The same or similar reference numerals in the drawings represent the same or similar components. DETAILED DESCRIPTION

[0020] Combine the following Figure 1 The low-pressure carburizing control pipeline of the present application is further explained.

[0021] The present application provides a low-pressure carburizing control pipeline, comprising: a hand valve 5, a mass flowmeter 1 and a pipeline, wherein the mass flowmeter 1 is provided with a mass sensor and a flow sensor, and further comprises: an inflow tee pipe 3, an outflow tee pipe 4 and a solenoid valve 2;

[0022] The two ends of the inflow three-way pipe 3 are connected to the acetylene gas outlet of the hand valve 5 and the acetylene gas inlet of the mass flow meter 1 through pipelines, and the other end is connected to the acetylene gas inlet of the solenoid valve 2;

[0023] One end of the outflow three-way pipe 4 is connected to the acetylene gas outflow outlet of the solenoid valve 2 through a pipeline, and the other end is connected to the acetylene gas outflow outlet of the mass flow meter 1;

[0024] The mass flow meter 1 is provided with two flow sensor signal interfaces;

[0025] Another flow sensor is disposed inside the solenoid valve 2 , and the other flow sensor is communicatively connected with the mass flow meter 1 . The distance between the solenoid valve 2 and the mass flow meter 1 is between 5 cm and 1 decimeter.

[0026] The inflow tee 3, the outflow tee 4 and the solenoid valve 2 are connected through a pipeline 6 to form a bypass design relative to the mass flowmeter 1. The mass flowmeter 1 is provided with an interface for receiving signals from two flow sensors. A flow sensor is provided on the solenoid valve, and the other is arranged inside the mass flowmeter. The mass flowmeter receives statistical data from the two flow sensors and can combine and calculate the overall acetylene gas flow.

[0027] In actual use, the acetylene gas passing through the mass flowmeter 1 is monitored by the mass flowmeter 1 to ensure that the acetylene gas is not contaminated, and the acetylene gas flow through the mass flowmeter 1 is calculated at the same time. The acetylene gas flow through the bypass solenoid valve 2 is counted by the electronic valve. The solenoid valve 2 is connected to the mass flowmeter 1 in communication, and the acetylene gas flow data can be calculated in real time by the flow sensor in the solenoid valve 2, and the calculation result is sent to the mass flowmeter 1, so that the mass flowmeter 1 calculates the total flow. The mass flowmeter 1 can control the opening degree of itself and the solenoid valve 2 according to the setting to control the acetylene gas flow. When the acetylene gas circulation needs to be closed, the mass flowmeter 1 can control the solenoid valve 2 to close the bypass, and it can also close the circulation channel of the acetylene gas flowing through itself. Through this kind of communication control, the acetylene gas quality can be monitored in real time, and the acetylene gas flow can be accurately controlled according to actual needs, thereby controlling the injection volume. Acetylene gas resources are saved, thereby reducing process costs. The distance between the solenoid valve 2 and the mass flow meter 1 can be controlled between 5 cm and 1 decimeter. In actual tests, a variety of near-field communication technologies are used for testing. Under existing near-field communication technologies, the distance between the two devices is more suitable at 5 cm to 1 decimeter. It will not be too far to affect the timeliness of device communication, nor too close to cause excessive magnetic interference between the two devices, thereby affecting the calculation accuracy. Preferably, the distance between the solenoid valve 2 and the mass flow meter 1 is between 6.5 cm and 8 cm, which can obtain the most timely data transmission and the smallest magnetic interference under most near-field communication technologies. This further improves the accuracy of acetylene gas flow control, further saves acetylene gas resources, and reduces process costs.

[0028] In some embodiments of the present application, an acetylene gas detection sensor is provided at the other end of the outflow tee pipe 4, and the acetylene gas detection sensor is communicatively connected with the mass flow meter 1; the mass flow meter is provided with a signal interface for receiving the acetylene gas detection sensor.

[0029] In actual use, after the acetylene gas passes through the mass flow meter 1 and the solenoid valve 2, it also needs to pass through a part of the connecting pipe 6 to reach the nozzle. If the flow rate is calculated when the acetylene gas passes through the mass flow meter 1 and the solenoid valve 2, a large injection error will occur. Therefore, an acetylene gas detection sensor can be provided in the outflow tee 4. When the acetylene gas flows through the outflow tee 4, the acetylene gas detection sensor sends a signal to the mass flow meter 1 to enable the mass flow meter 1 to start calculating the acetylene gas flow rate, thereby further accurately controlling the flow rate of the acetylene gas, saving acetylene gas resources, and thus reducing process costs.

[0030] In some embodiments of the present application, the distance between the outflow tee pipe 4 and the mass flow meter 1 is between 0.2 meters and 1.3 meters.

[0031] In actual use, the distance between the outflow tee 4 and the mass flowmeter 1 is between 0.2 meters and 1.3 meters, which can be suitable for most application scenarios. In actual tests, a distance exceeding 1.3 meters will affect the timeliness of the acetylene gas detection sensor and the mass flowmeter 1 in the outflow tee 4. A distance less than 0.2 meters requires a longer pipeline 6 to transport acetylene gas. Considering that acetylene gas will form uneven density in each part according to temperature changes, thereby affecting the precise control of the acetylene gas flow by the mass flowmeter 1, controlling the distance between 0.2 meters and 1.3 meters will neither affect the timeliness of transmission nor increase the flow control error and waste pipeline 6 resources, thereby further accurately controlling the flow of acetylene gas, saving acetylene gas resources, and reducing process costs.

[0032] In some embodiments of the present application, a diameter error between the pipe 6 connecting the inflow tee pipe 3 and the solenoid valve 2 and the pipe 6 connecting the inflow tee pipe 3 and the mass flowmeter 1 is less than or equal to 0.2 mm.

[0033] The smaller the diameter error between the pipe 6 connecting the inflow tee 3 and the solenoid valve 2 and the pipe 6 connecting the inflow tee 3 and the mass flowmeter 1, the more accurate the control of the mass flowmeter 1. By testing the universal pipe 6, although the flow statistics of some mass flowmeters 1 and solenoid valves 2 will not produce large errors due to the diameter of the pipe 6, the large diameter difference between the two pipes 6 leads to uneven rear-end air pressure, and statistical errors begin to occur after a large number of uses. According to calculations, the diameter error between the pipe 6 connecting the inflow tee 3 and the solenoid valve 2 and the pipe 6 connecting the inflow tee 3 and the mass flowmeter 1 is less than or equal to 0.2 mm, which can ensure the calculation stability of the mass flowmeter 1 in a normal production cycle, thereby ensuring that a certain calculation accuracy can still be maintained after a large number of uses, so as to further accurately control the flow of acetylene gas and prevent the calculation of the mass flowmeter 1 from being adjusted too frequently, thereby improving production efficiency and reducing process costs.

[0034] In some embodiments of the present application, an acetylene gas pump is further included, and the acetylene gas inlet of the hand valve 5 is connected to the acetylene gas outlet of the acetylene gas pump through a pipeline 6, and the acetylene gas pump is communicatively connected to the mass flow meter 1.

[0035] The acetylene gas pump is used to pressurize the acetylene gas and can communicate with the mass flow meter 1 in real time. In actual production, the pressure of the acetylene gas pump can be adjusted through the mass flow meter 1 according to actual needs to facilitate the control of the acetylene gas spray volume, further accurately control the flow rate of the acetylene gas, save acetylene gas resources, and thus reduce process costs.

[0036] In some embodiments of the present application, the mass flow meter 1 is provided with a touch screen and a sound alarm.

[0037] The touch screen allows operators to observe and control the flow rate, quality and other data of acetylene gas in real time. When the quality of acetylene gas drops to the preset quality index, the operator can be reminded through the sound alarm. This further facilitates the operator's operation, improves production efficiency and reduces process costs.

[0038] In some embodiments of the present application, the acetylene gas outlet of the hand valve is provided with a filter flange, which is connected to the pipeline through the filter flange, and the filter flange has a stainless steel filter screen, and the stainless steel filter screen has a mesh size between 100 and 150.

[0039] The stainless steel filter between 100 mesh and 150 mesh can filter out a large amount of impurities, so that after the subsequent jetting, the impurity particles on the surface of the workpiece are smaller, preventing them from affecting the performance of the workpiece. The stainless steel filter between 100 mesh and 150 mesh will not have too much impact on the acetylene gas pressure when filtering more impurities, and will not affect the jetting efficiency. According to calculations, the stainless steel filter is best between 127 mesh and 135 mesh. Combining the filter with the flange to form a filter flange can make it very convenient to replace the filter in actual use. The filter flange can conveniently remove excess impurities, improve the processing effect of subsequent processes, and thus improve the product qualification rate and production efficiency.

[0040] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

[0041] It is obvious 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 features of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved. In addition, it is obvious that the word "comprising" does not exclude other units or steps, and the singular does not exclude the plural. Multiple units or devices stated in the device claim can also be implemented by one unit or device through software or hardware. The words first, second, etc. are used to indicate names, and do not indicate any particular order.

Claims

1. Low-pressure carburizing control pipeline, including: A hand valve, a mass flow meter and a pipeline, wherein the mass flow meter is provided with a mass sensor and a flow sensor, and is characterized in that it also includes: Inflow tee, outflow tee and solenoid valve; The two ends of the inflow three-way pipe are connected to the acetylene gas outlet of the hand valve and the acetylene gas inlet of the mass flow meter through pipelines, and the other end is connected to the acetylene gas inlet of the solenoid valve; One end of the outflow three-way pipe is connected to the acetylene gas outflow outlet of the solenoid valve through a pipeline, and the other end is connected to the acetylene gas outflow outlet of the mass flow meter; The mass flow meter is provided with two flow sensor signal interfaces; Another flow sensor is arranged in the solenoid valve, and the other flow sensor is communicatively connected with the mass flow meter. The distance between the solenoid valve and the mass flow meter is between 5 cm and 1 decimeter.

2. The low-pressure carburizing control pipeline according to claim 1, characterized in that: An acetylene gas detection sensor is disposed at the other end of the outflow tee pipe, and the acetylene gas detection sensor is communicatively connected with the flow mass meter; The mass flow meter is provided with a signal interface for receiving the signal of the acetylene gas detection sensor.

3. The low-pressure carburizing control pipeline according to claim 2, characterized in that: The distance between the outflow tee and the mass flow meter is between 0.2 meters and 1.3 meters.

4. The low-pressure carburizing control pipeline according to claim 1, characterized in that: The diameter error between the pipeline connecting the inflow tee and the solenoid valve and the pipeline connecting the inflow tee and the mass flowmeter is less than or equal to 0.2 mm.

5. The low-pressure carburizing control pipeline according to claim 1, characterized in that: An acetylene gas pump is also included. The acetylene gas inlet of the hand valve is connected to the acetylene gas outlet of the acetylene gas pump through a pipeline. The acetylene gas pump is communicatively connected with the mass flow meter.

6. The low-pressure carburizing control pipeline according to claim 1, characterized in that: The acetylene gas outlet of the hand valve is provided with a filter flange, which is connected to the pipeline through the filter flange. The filter flange has a stainless steel filter screen, and the stainless steel filter screen has a mesh size between 100 and 150.

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