Gas pretreatment system

Abstract

The utility model belongs to the technical field of gas monitoring, and discloses a gas pretreatment system, which comprises a compressed air source, a gas three-way valve, a sampling pump, a condenser and a gas pool, the output end of the compressed air source is connected with the input end of the gas three-way valve, and the compressed air source is used as a power source of the pretreatment system; the output end of the gas three-way valve is respectively connected with the input end of the condenser and the input end of the sampling pump; an oil-water filter is connected between the compressed air source and the gas three-way valve and is used for purifying compressed air; the input end of the condenser is also connected with a sample gas bottle; a first filter is connected between the output end of the sample gas bottle and the input end of condensed gas; the output end of the condenser is connected with the input end of the gas pool; in the system, a compressed air source is used as a power source, the system can operate stably under the condition of no external power supply, the system is particularly suitable for remote industrial occasions or industrial occasions without power supply, and meanwhile, the risk that electrical elements may cause faults is greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas monitoring technical field, especially to a kind of gas pretreatment system. BACKGROUND

[0002] Gas pretreatment system refers to the sample gas to be handled is handled in a series of physics, chemistry, removes impurities, moisture, peculiar smell etc., to ensure the purity and stability of output gas, to reach the process requirement of a kind of system, this process usually includes air sampling, decompression, cooling, heat tracing, water removal, dust filtration, gas path control, flow control etc., the system has pivotal position in industrial production, can effectively improve the use efficiency of gas, protect downstream equipment, prolong its service life, improve product quality, reduce production cost.

[0003] At present, similar system mainly uses electronic sampling pump to sample and is cooled and dehydrated by electronic condenser, and the failure rate is higher in use process, and sampling and cooling efficiency are low, and regular replacement maintenance is needed;And because of the existence of motor, compressor, fan and other components, it is difficult to achieve true explosion-proof performance, and there are many restrictions in the application of many petrochemical industry explosion-proof places.

[0004] Therefore, a kind of gas pretreatment system is proposed to solve the above problems. UTILITY MODEL CONTENT

[0005] The main purpose of the utility model is to provide a kind of gas pretreatment system, to solve the problem of low explosion-proof performance of existing gas pretreatment system.

[0006] In order to realize the above-mentioned utility model purpose, the utility model provides a kind of gas pretreatment system, comprising: compressed air source, inlet valve, gas tee valve, sampling pump, condenser and gas pool, wherein:

[0007] The output end of the compressed air source is connected with the input end of the gas tee valve through inlet valve;

[0008] The output end of the gas tee valve is connected with the input end of the condenser and the input end of the sampling pump respectively;

[0009] Oil-water filter is connected between the compressed air source and the gas tee valve, for purifying compressed air;

[0010] The input end of the condenser is also connected with sample gas bottle, and the output end of the sample gas bottle is connected with the input end of the condenser through first filter;

[0011] The output end of the condenser is connected with the input end of the gas pool;

[0012] The compressed air source is used as a system power source, the air inlet valve is used for controlling the opening and closing of the compressed air source, the sampling pump is used as a power source for sample gas entering the system, and the condenser is used for cooling and dehydrating the sample gas.

[0013] Further, a second filter is connected between the output end of the condenser and the input end of the gas pool, and is used for drying and purifying the gas.

[0014] Further, a flow meter is connected to the output end of the gas pool, and is used for controlling the sample gas flow.

[0015] Further, a sample gas three-way valve is connected to the output end of the flow meter, and the output end of the sample gas three-way valve is connected to the input end of the sampling pump.

[0016] Further, a standard gas bottle is connected to the input end of the sample gas three-way valve, and a standard gas valve is connected between the output end of the standard gas bottle and the input end of the sample gas three-way valve.

[0017] Further, a first adjusting valve is connected between the output end of the gas three-way valve and the input end of the condenser, and is used for adjusting the amount of compressed air.

[0018] Further, a second adjusting valve is connected between the input end of the sampling pump and the output end of the gas three-way valve, and is used for adjusting the sampling pump.

[0019] Beneficial effects:

[0020] The gas pretreatment system of the utility model, comprising: compressed air source, gas three-way valve, sampling pump, condenser and gas pool, wherein: the output end of compressed air source is connected with the input end of gas three-way valve, is used as the power source of pretreatment system;The output end of gas three-way valve is connected with the input end of condenser and the input end of sampling pump respectively;Compressed air source and gas three-way valve are connected with oil-water filter, and are used for purifying compressed air;The input end of condenser is also connected with sample gas bottle, and the output end of sample gas bottle and the input end of condensing gas are connected with first filter;The output end of condenser is connected with the input end of gas pool;In this system, compressed air source is used as power source, and the shunting and regulation of gas are realized through gas three-way valve, the power source characteristics of compressed air source are combined with the purification function of oil-water filter, ensure that the air inputted by system is oil-free and water-free, ensure the cleanliness and continuity of gas flow;In the absence of external power supply, the system can be stably operated, and is especially suitable for remote or power supply-free industrial occasions, and the risk of failure caused by electrical components is greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the flow chart of the gas pretreatment system of an embodiment of the utility model.

[0022] Wherein:

[0023] 100, compressed air source; 110, air inlet valve; 120, oil-water filter;

[0024] 200, gas tee valve;

[0025] 300, condenser; 310, first regulating valve; 320, first filter;

[0026] 400, sample gas cylinder; 410, sample gas valve;

[0027] 500, gas cell; 510, second filter;

[0028] 600, flow meter;

[0029] 700, sample gas tee valve;

[0030] 800, sampling pump; 810, second regulating valve; 820, exhaust port;

[0031] 900, standard gas cylinder; 910, standard gas valve;

[0032] The implementation, functional features and advantages of the utility model will be further described with reference to the drawings. DETAILED DESCRIPTION

[0033] It should be understood that the specific embodiments described herein are merely intended to explain the utility model, and are not intended to limit the utility model.

[0034] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0035] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, term "installation", "link", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, can be direct connection, also can be indirectly connected through intermediate medium, can be two elements inside the communication or two element's mutual action relation.For ordinary skilled in the art, the above-mentioned terms can be understood according to the specific meaning in the utility model.

[0036] In the utility model, unless another explicit provision and limitation, the first feature is "on" or "under" the second feature can include the first and second features direct contact, also can include the first and second features is not direct contact but is through the contact between other features between them.And, the first feature is "on", "above" and "on" the second feature includes the first feature is directly above and obliquely above the second feature, or just indicates that the first feature horizontal height is higher than the second feature.The first feature is "under", "below" and "under" the second feature includes the first feature is directly below and obliquely below the second feature, or just indicates that the first feature horizontal height is less than the second feature.

[0037] Referring to Figure 1 The utility model relates to a kind of gas pretreatment systems, comprising: compressed air source 100, inlet valve 110, gas tee valve 200, sampling pump 800, condenser 300 and gas cell 500, wherein:

[0038] The output end of the compressed air source 100 is connected with the input end of the gas tee valve 200 between inlet valve 110;

[0039] The output end of the gas tee valve 200 is connected with the input end of the condenser 300 and the input end of the sampling pump 800 respectively;

[0040] Compressed air source 100 and the gas tee valve 200 are connected with oil-water filter 120, for purifying compressed air;

[0041] The input end of the condenser 300 is also connected with sample gas bottle 400, and the output end of the sample gas bottle 400 is connected with the first filter 320 between the input end of the condensing gas;

[0042] The output end of the condenser 300 is connected with the input end of the gas cell 500;

[0043] The compressed air source 100 is used as a power source of the system, the air inlet valve 110 is used for controlling the opening and closing of the compressed air source 100, the sampling pump 800 is used as a power source for sample gas entering the system, and the condenser 300 is used for cooling and dehydrating the sample gas.

[0044] The second filter 510 is connected between the output end of the condenser 300 and the input end of the gas tank 500, and is used for drying and purifying the gas.

[0045] In this embodiment, the air inlet valve 110 is opened, the on-site compressed air is purified through the oil-water filter 120, and then enters the condenser 300 and the sampling pump 800 through the gas three-way valve 200. The sample gas enters the system through the sample gas valve 410, is purified through the first filter 320, and then enters the condenser 300. The condenser 300 cools and dehydrates the sample gas, and then the sample gas is dried and purified through the second filter 510 and enters the gas tank 500 for use by the analytical instrument.

[0046] The design of the gas pretreatment system aims to realize the functions of power-free, modularization, high efficiency and safety. In the design of this embodiment, the system provides a power source through the compressed air source 100, combines multiple regulating valves, filters and condensers 300, realizes the purification, cooling and drying of the gas, avoids electrical components in the whole system, improves safety and reliability, and is particularly suitable for explosion-proof places.

[0047] This embodiment provides power for system operation through the compressed air source 100, reduces the use of electronic equipment; the gas three-way valve 200 is used for accurate control of gas flow by shunting and matching with regulating valves, the oil-water filter 120 is arranged in the gas flow path to purify the on-site compressed air, the first filter 320 is used for purifying the sample gas, and the second filter 510 is used for drying and purifying the sample gas cooled and dehydrated, to ensure the cleanliness of the gas. In addition, the system is power-free, which improves the stability and applicability of the system. By using compressed air as a power source, the traditional electronic equipment is replaced, and the risk of shutdown caused by electrical component failure is eliminated. In places without electricity or remote areas, the design can efficiently operate, which widens the applicable scenarios of the equipment. At the same time, the system is safe and explosion-proof, and is suitable for high-risk environments. The power-free design completely avoids the risk of sparks or heat generated by motors and electronic components, and ensures the safe operation in explosion-proof places such as petroleum and chemical industry. Due to the power-free design and explosion-proof characteristics, the pretreatment system of this embodiment can be applied to high-explosion-proof places such as petroleum and chemical industry, high-dust and high-temperature places such as waste incineration in environmental monitoring and power plant tail gas, and remote industrial sites or mobile monitoring equipment, without the need for additional power equipment.

[0048] The output end of the gas tank 500 is connected with the flow meter 600, which is used for controlling the flow of sample gas.

[0049] The output end of the flow meter 600 is connected with a sample gas three-way valve 700, and the output end of the sample gas three-way valve 700 is connected with the input end of the sampling pump 800;

[0050] The input end of the sample gas three-way valve 700 is connected with a standard gas cylinder 900, and the output end of the standard gas cylinder 900 and the input end of the sample gas three-way valve 700 are connected with a standard gas valve 910.

[0051] The outlet of the gas tank 500 is connected with the flow meter 600, the flow is accurately controlled through the flow meter 600, and it is ensured that the sample gas enters the analysis equipment stably, the sample gas at the outlet of the flow meter 600 enters the sample gas three-way valve 700, the three-way valve is switched to the input gas flow of the oxygen cylinder or the standard gas cylinder 900 according to the operation requirement, the standard gas cylinder 900 controls the standard gas flow through the standard gas valve 910, and the calibration required standard gas is provided for the analysis equipment; in the embodiment, the sample gas is connected with the field exhaust pipeline through the exhaust port 820, harmful gas is avoided from being directly discharged to the working environment, and potential safety hazards are eliminated from the source.

[0052] The output end of the gas three-way valve 200 and the input end of the condenser 300 are connected with the first adjusting valve 310, which is used for adjusting the gas amount of the compressed air.

[0053] The input end of the sampling pump 800 and the output end of the gas three-way valve 200 are connected with the second adjusting valve 810, which is used for adjusting the sampling pump 800.

[0054] In addition, the first adjusting valve 310 and the second adjusting valve 810 are arranged, the gas amount of the condenser 300 can be adjusted through the first adjusting valve 310, and the sampling pump 800 can be adjusted through the second adjusting valve 810; the combination of the adjusting valve and the flow meter 600 realizes the accurate control of the flow of the compressed air and the sample gas, meets the requirements of different processes on the gas flow and quality, and is suitable for various working scenes.

[0055] The working principle of the implemented gas pretreatment system is that the compressed air is purified through the air inlet valve 110 and the oil-water filter 120, then enters the gas three-way valve 200, is branched to the condenser 300 and the sampling pump 800, and provides power for the system, the first regulating valve 310 is used for controlling the amount of compressed air entering the condenser 300, and the second regulating valve 810 adjusts the air flow entering the sampling pump 800, the sample gas enters the first filter 320 for preliminary purification through the sample gas bottle 400, removes particulate impurities, the purified sample gas enters the condenser 300, the condenser 300 removes water by cooling, the sample gas after water removal is further dried and purified through the second filter 510, and finally enters the gas tank 500 for storage; the output end of the gas tank 500 is connected with the flow meter 600, the flow meter 600 accurately controls the sample gas flow, ensures stable output, the sample gas three-way valve 700 can be switched to the standard gas bottle 900, the standard gas passes through the standard gas valve 910 to control the flow, and the standard gas provides the standard gas required for calibration for the analyzer, and the exhaust of the sampling pump 800 is connected with the exhaust pipeline through the designed circuit, so that harmful gas is avoided from leaking to the working environment.

[0056] The above only describes the preferred embodiments of the utility model, and does not limit the patent range of the utility model, and equivalent structures or equivalent process transformations using the contents of the utility model specification and drawings, or direct or indirect application in other related technical fields are all included in the patent protection range of the utility model.

Claims

1. A gas pre-treatment system, characterized by, The utility model relates to a kind of compressed air sampling systems, including: Compressed air source (100), intake valve (110), gas tee valve (200), sampling pump (800), condenser (300) and gas cell (500), wherein: The output end of the compressed air source (100) is connected with the input end of the gas tee valve (200) between intake valve (110); The output end of the gas tee valve (200) is connected with the input end of the condenser (300) and the input end of the sampling pump (800) respectively; Oil-water filter (120) is connected between the compressed air source (100) and the gas tee valve (200), for purifying compressed air; The input end of the condenser (300) is also connected with sample gas bottle (400), and the output end of the sample gas bottle (400) and the input end of the condenser are connected with first filter (320) between; The output end of the condenser (300) is connected with the input end of the gas cell (500); Wherein, the compressed air source (100) is used as system power source, the intake valve (110) is used for controlling the opening and closing of the compressed air source (100), the sampling pump (800) is used as the power source that sample gas enters system, the condenser (300) is used for cooling sample gas, and the gas cell (500) is used for storing purified sample gas.

2. The gas pretreatment system of claim 1, wherein, Second filter (510) is connected between the output end of the condenser (300) and the input end of the gas cell (500), for drying and purifying gas.

3. The gas pretreatment system of claim 1, wherein, The output end of the gas cell (500) is connected with flowmeter (600), for controlling sample gas flow.

4. The gas pretreatment system of claim 3, wherein The output end of the flowmeter (600) is connected with sample gas tee valve (700), and the output end of the sample gas tee valve (700) is connected with the input end of the sampling pump (800).

5. The gas pretreatment system of claim 4, wherein, The input end of the sample gas tee valve (700) is connected with standard gas bottle (900), and the output end of the standard gas bottle (900) and the input end of the sample gas tee valve (700) are connected with standard gas valve (910) between.

6. The gas pretreatment system of claim 1, wherein, First regulating valve (310) is connected between the output end of the gas tee valve (200) and the input end of the condenser (300), for adjusting the gas volume of compressed air.

7. The gas pretreatment system of claim 1, wherein Second regulating valve (810) is connected between the input end of the sampling pump (800) and the output end of the gas tee valve (200), for adjusting the sampling pump (800).

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