Methanol valve group unit equipment

Abstract

The utility model provides methanol valve group unit equipment, which belongs to the field of methanol supply equipment and comprises a methanol supply system, a nitrogen purging system and a nitrogen emptying system, and the methanol supply system comprises a ball valve a, a methanol fine filter and a coaxial valve which are sequentially arranged on a methanol supply pipeline. The nitrogen purging system comprises a ball valve b, a nitrogen fine filter, a stop valve a, a stop valve b and a one-way valve which are sequentially arranged on the nitrogen purging pipeline, the one-way valve is communicated with the methanol supply pipeline, and the one-way valve is located on the side, away from the methanol fine filter, of the coaxial valve; the nitrogen emptying system comprises a pipe joint b, a stop valve c and a nozzle which are sequentially arranged on a nitrogen emptying pipeline; and the pipe joint b is communicated with the nitrogen purging pipeline between the stop valve a and the stop valve b. According to the utility model, accurate and safe supply of methanol can be ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to methanol supply equipment field, concretely relates to a methanol valve group unit equipment. BACKGROUND

[0002] Traditional energy, such as coal, oil, etc., not only can produce a large amount of pollutants in the use process, causes the remarkable negative influence to the environment, and along with the increase of global resource consumption, these traditional energy is facing the crisis of exhaustion.Compared with this, methanol as an organic compound, with its less damage to the environment, is concerned.Methanol production and application not only help to reduce environmental pollution, but also can alleviate the energy crisis to a certain extent.

[0003] Methanol is widely used, it is the important chemical raw material of manufacturing various organic products.For example, formaldehyde, acetic acid, chloromethane, methylamine and dimethyl sulfate, etc.Organic products, all can be obtained by the synthesis or conversion of methanol.In addition, methanol can also be used as a clean energy alternative to gasoline, and provide power for the engine.Methanol fuel has the advantages of high combustion efficiency, less emission pollution, etc., is one of the ideal choices to replace traditional fuel.However, the traditional methanol supply device is often more complex in structure, has the problems of safety hazard and insufficient reliability.These problems not only affect the use effect of methanol supply device, but also may threaten the production safety and environmental protection.

[0004] The patent with publication number CN115288894A introduces a kind of methanol fuel supply system, the system has the function of methanol supply and purging methanol supply module, but there are several deficiencies.Specifically, the nitrogen purity used in the patent is limited, and accumulation in the closed system can cause local pressure to abnormally rise, posing an explosion risk.Especially in the occasion needing precise control of gas flow, the residual nitrogen can significantly interfere with the accuracy of flow control.The patent does not propose effective technical solutions for the above key problems. UTILITY MODEL CONTENT

[0005] In order to improve the safety and reliability of methanol supply device, the present application proposes a methanol valve group unit equipment, which can ensure the accurate and safe supply of methanol.

[0006] The above object of the utility model is realized by the following technical scheme:

[0007] The utility model provides a kind of methanol valve group unit equipment, including methanol supply system, nitrogen purging system, nitrogen evacuation system, the methanol supply system includes the ball valve a, methanol fine filter, coaxial valve sequentially arranged on methanol supply pipeline, the nitrogen purging system includes the ball valve b, nitrogen fine filter, stop valve a, stop valve b, check valve sequentially arranged on nitrogen purging pipeline, check valve is connected on methanol supply pipeline, check valve is located the side of coaxial valve away from methanol fine filter, the nitrogen evacuation system includes the pipe joint b, stop valve c, nozzle sequentially arranged on nitrogen evacuation pipeline, pipe joint b is connected on nitrogen purging pipeline between stop valve a and stop valve b.

[0008] According to an embodiment of the utility model, the methanol supply system further includes pressure sensor a, pressure sensor b, mass flow meter, pressure sensor c, temperature sensor, the pressure sensor a is located between ball valve a and methanol fine filter, for detecting the pressure of methanol before fine filtering;Pressure sensor b is located between methanol fine filter and coaxial valve, for detecting the pressure of methanol after fine filtering;Mass flow meter is located between pressure sensor b and coaxial valve, for detecting the flow of methanol;Pressure sensor c is located on the side of coaxial valve away from mass flow meter, for detecting the pressure of methanol;Temperature sensor is located on the side of pressure sensor c away from coaxial valve, for detecting the temperature of methanol.

[0009] According to an embodiment of the utility model, the nitrogen purging system further includes pressure sensor d, pressure sensor d is located between nitrogen fine filter and stop valve a, for detecting the pressure of nitrogen.

[0010] According to an embodiment of the utility model, further include methanol evacuation system, methanol evacuation system includes the pipe joint a, ball valve c, flange plate sequentially arranged on methanol evacuation pipeline, pipe joint a is connected on methanol supply pipeline between mass flow meter and coaxial valve.

[0011] The utility model has the beneficial effects compared with prior art scheme:

[0012] 1, the utility model includes methanol supply system and nitrogen purging system, can empty the air in methanol supply system in advance by nitrogen purging system, because nitrogen is relatively stable, therefore can effectively reduce the risk of explosion.

[0013] 2, the utility model is also provided with nitrogen evacuation system, can empty the excess nitrogen after nitrogen purging, prevent nitrogen from affecting the accurate supply of methanol.

[0014] 3, the utility model is provided with nitrogen fine filter on nitrogen purging pipeline, can ensure that the nitrogen entering methanol supply system is pure, prevent the explosion caused by the gathering of impure nitrogen in methanol supply pipeline locally.

[0015] 4. The utility model discloses a one-way valve is equipped on nitrogen purging pipeline, can prevent nitrogen backflow.

[0016] 5. The utility model discloses still be equipped with temperature sensor, pressure sensor and mass flowmeter on methanol supply pipeline, can carry out real -time monitoring to the temperature, pressure and flow of methanol, when the data exist abnormity can in time through the ball valve close methanol supply system, prevent the accident from happening. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the structure schematic drawing of methanol supply system of the utility model;

[0018] Figure 2 It is the structure schematic drawing of nitrogen purging system of the utility model;

[0019] Figure 3 It is the structure schematic drawing of methanol emptying system of the utility model;

[0020] Figure 4 It is the structure schematic drawing of nitrogen emptying system of the utility model;

[0021] In the drawing, 101, methanol supply pipeline;102, ball valve a;103, pressure sensor a;104, methanol fine filter;105, pressure sensor b;106, mass flowmeter;107, coaxial valve;108, pressure sensor c;109, temperature sensor;201, nitrogen purging pipeline;202, ball valve b;203, nitrogen fine filter;204, pressure sensor d;205, stop valve a;206, stop valve b;207, one-way valve;301, methanol emptying pipeline;302, pipe joint a;303, ball valve c;304, flange;401, nitrogen emptying pipeline;402, pipe joint b;403, stop valve c;404, nozzle. DETAILED DESCRIPTION

[0022] The utility model is described in detail below through specific embodiment, but does not limit the protection scope of the utility model.

[0023] In the description of the utility model, need explanation, the orientation or positional relation that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. are based on the orientation or positional relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element indicated must have a particular orientation, construct and operate with a particular orientation, therefore can not be understood as the limitation of the utility model.

[0024] Unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of a second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of a second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] Example 1

[0026] like Figure 1 As shown, the methanol supply system includes a ball valve a102, a pressure sensor a103, a methanol fine filter 104, a pressure sensor b105, a mass flow meter 106, a coaxial valve 107, a pressure sensor c108, and a temperature sensor 109, sequentially arranged on the methanol supply pipeline 101. Ball valve a102 is used to manually control the on / off state of the methanol supply system. When abnormalities occur in the system's pressure, temperature, flow rate, or other data, the methanol supply is shut off by manually controlling ball valve a102. The methanol fine filter 104 has a filtration accuracy of 20μm and is used to filter out impurities in the methanol, preventing impure methanol from entering other equipment. The mass flow meter 106 is used to detect the methanol flow rate, and its detection range is 0–6500 kg / h. The coaxial valve 107 is used to control the methanol supply flow rate; the coaxial valve 107, in conjunction with the mass flow meter 106, can precisely control the methanol supply flow rate. Pressure sensor A103 is used to detect the pressure of methanol before fine filtration, and pressure sensor B105 is used to detect the pressure of methanol after fine filtration. The detection by pressure sensors A103 and B105 effectively reflects whether there are any abnormalities in the methanol pressure. Pressure sensor C108 and temperature sensor 109 are used to monitor the pressure and temperature of methanol entering other equipment.

[0027] like Figure 2As shown, the nitrogen purging system includes ball valve b 202, nitrogen fine filter 203, pressure sensor d 204, stop valve a 205, stop valve b 206, and one-way valve 207 arranged in sequence on the nitrogen purging pipeline 201. The filtering accuracy of the nitrogen fine filter 203 is 20 μm, that is, particulate matter with a size of 20 μm or more is filtered out by the nitrogen fine filter 203. The pressure sensor d 204 is used to detect the pressure of the nitrogen, which can effectively reflect whether the nitrogen pressure is abnormal. The stop valve a 205 and the stop valve b 206 are diaphragm solenoid valves with forced pilot control, and the stop valve a 205 is closed when not in use, while the stop valve b 206 is open when not in use. Forced pilot control can more easily control the valve, and the use of diaphragms can more quickly control the on-off of the pipeline. When it is necessary to stop supplying nitrogen, the displacement of the diaphragm can be controlled through the pilot mechanism, so that the nitrogen purging system can be easily and quickly closed. The one-way valve 207 is used to connect the methanol supply pipeline 101 and the nitrogen purging pipeline 201. The one-way valve 207 is connected to the rear end of the coaxial valve 107, so that the methanol supply pipeline 101 can be fully purged. The one-way valve 207 can only allow nitrogen to flow from the nitrogen purging system to the methanol supply system, which can effectively prevent nitrogen backflow from damaging the equipment.

[0028] As shown in Figure 3 , the methanol purging system includes pipe joint a 302, ball valve c 303, and flange 304 arranged in sequence on the methanol purging pipeline 301. The pipe joint a 302 is used to connect the methanol purging pipeline 301 and the methanol supply pipeline 101. The pipe joint a 302 is connected to the methanol supply pipeline 101 between the mass flow meter 106 and the coaxial valve 107, so that the methanol can be purged to the maximum extent. The ball valve c 303 is manually operated. When it is necessary to purge the methanol, the coaxial valve 107 needs to be closed, and then the ball valve c 303 is opened, so that the methanol leaves the methanol purging pipeline 301. The flange 304 is used to tightly connect the methanol purging pipeline 301 and the equipment that receives the methanol.

[0029] As shown in Figure 4 , the nitrogen purging system includes pipe joint b 402, stop valve c 403, and nozzle 404 arranged in sequence on the nitrogen purging pipeline 401. The pipe joint b 402 is connected to the nitrogen purging pipeline 201 between the stop valve a 205 and the stop valve b 206, and is used to connect the nitrogen purging pipeline 401 and the nitrogen purging pipeline 201. The stop valve c 403 is a diaphragm solenoid valve with forced pilot control, and the stop valve c 403 is closed when not in use. When it is necessary to purge the nitrogen, the stop valve a 205 and the stop valve b 206 need to be closed, and then the stop valve c 403 is opened. The nozzle 404 is used to externally connect the equipment that receives the nitrogen.

[0030] Example 2

[0031] The embodiment is used for specifically illustrating the working condition of the methanol valve group unit device.

[0032] When the engine needs to be provided with methanol, first, the ball valve b202, the stop valve a205 and the stop valve b206 are opened to start the nitrogen purging system. The nitrogen enters the nitrogen purging pipeline 201 through the ball valve b202, then enters the methanol supply pipeline 101 through the one-way valve 207, and sequentially purges the air or other gas in the methanol supply pipeline 101 through the coaxial valve 107, the mass flow meter 106, the pressure sensor b105, the methanol filter 104, the pressure sensor a103 and the ball valve a102. When the nitrogen needs to be exhausted after the purging is completed, the stop valve a205 is closed, the stop valve b206 is opened and the stop valve c403 is opened, at this time, the nitrogen enters the nitrogen exhaust pipeline 401 through the pipe joint b402, and is discharged from the device through the nozzle 404.

[0033] After the nitrogen is exhausted, the ball valve a102 can be opened to supply methanol. The methanol is filtered through the methanol filter 104 and enters other devices through the coaxial valve 107. In this process, the pressure sensor a103, the pressure sensor b105, the pressure sensor c108, the mass flow meter 106 and the temperature sensor 109 can monitor the pressure, flow and temperature data of the methanol in real time, and when the data is abnormal, the ball valve a102 is manually closed to stop the supply of methanol.

[0034] When other devices do not need to continue to provide methanol, the coaxial valve 107 is closed and the ball valve c303 is opened, at this time, the methanol enters the methanol exhaust pipeline 301 through the ball valve c303 on the front side of the coaxial valve 107, and then enters the device receiving the methanol. At this time, the methanol in the device is exhausted.

[0035] The above-described embodiments are only preferred embodiments of the present application, and not all the embodiments that can be implemented by the present application. Any obvious modifications made by those skilled in the art without departing from the principles and spirit of the present application should be considered to be included in the protection scope of the claims of the present application.

Claims

1. A methanol valve train unit apparatus, characterized by, The methanol supply system, the nitrogen purging system and the nitrogen evacuation system, the methanol supply system comprises ball valve a (102), methanol filter (104) and coaxial valve (107) arranged in sequence on the methanol supply pipeline (101), the nitrogen purging system comprises ball valve b (202), nitrogen filter (203), stop valve a (205), stop valve b (206) and check valve (207) arranged in sequence on the nitrogen purging pipeline (201), check valve (207) is connected to the methanol supply pipeline (101), check valve (207) is located on the side of coaxial valve (107) away from methanol filter (104), the nitrogen evacuation system comprises pipe joint b (402), stop valve c (403) and nozzle (404) arranged in sequence on the nitrogen evacuation pipeline (401), pipe joint b (402) is connected to the nitrogen purging pipeline (201) between stop valve a (205) and stop valve b (206).

2. A methanol valve train unit apparatus according to claim 1, characterized in that: The methanol supply system further comprises pressure sensor a (103), pressure sensor b (105), mass flow meter (106), pressure sensor c (108) and temperature sensor (109), the pressure sensor a (103) is arranged between ball valve a (102) and methanol filter (104) for detecting the pressure of methanol before filtration, the pressure sensor b (105) is arranged between methanol filter (104) and coaxial valve (107) for detecting the pressure of methanol after filtration, the mass flow meter (106) is arranged between pressure sensor b (105) and coaxial valve (107) for detecting the flow of methanol, the pressure sensor c (108) is arranged on the side of coaxial valve (107) away from mass flow meter (106) for detecting the pressure of methanol, and the temperature sensor (109) is arranged on the side of pressure sensor c (108) away from coaxial valve (107) for detecting the temperature of methanol.

3. A methanol valve train unit apparatus according to claim 2, characterized in that: The nitrogen purging system further comprises pressure sensor d (204), which is arranged between nitrogen filter (203) and stop valve a (205) for detecting the pressure of nitrogen.

4. A methanol valve train unit apparatus according to claim 3, wherein: The methanol evacuation system further comprises pipe joint a (302), ball valve c (303) and flange (304) arranged in sequence on the methanol evacuation pipeline (301), and pipe joint a (302) is connected to the methanol supply pipeline (101) between mass flow meter (106) and coaxial valve (107).

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