A gas automatic integrated detection system

Abstract

The present invention discloses a gas automatic integrated detection system. The gas automatic integrated detection system comprises an oil tank, a valve island, a pumping module, and a gas detection module connected in sequence. The valve island comprises a valve plate, a first solenoid valve, a second solenoid valve, a drain pipe, an exhaust pipe, an air filter, a filter drain pipe, and an air intake pipe for communicating with the oil tank. A plurality of pipeline networks are sequentially arranged on the valve plate, and each of the plurality of pipeline networks is sequentially connected with a first solenoid valve, a second solenoid valve, an air filter, an air intake pipe, and a filter drain pipe. The plurality of pipeline networks are connected with the drain pipe and the exhaust pipe. The present invention cancels the connection mode of the air pipe and the joint in the detection system, avoids the leakage of dangerous gas, and greatly improves the safety of the detection device. At the same time, due to the adoption of an integrated structure, the volume of the detection system is greatly reduced, saving space.

Description

Technical Field

[0001] The invention relates to the field of gas detection in oil tanks, and in particular to an automatic integrated gas detection system. Background Art

[0002] At present, before cleaning crude oil and refined oil tanks, it is necessary to detect the oxygen content and harmful gases such as hydrocarbons, hydrogen sulfide, carbon monoxide, etc. in the tank to prevent personnel poisoning and oil tank explosion. To ensure the reliability of the detection data, multiple points need to be detected, and each detection sensor detects one component. The working environment of crude oil cleaning has a lot of moisture. After air filtration, a large amount of water exists in the filter, which needs to be pumped away in time.

[0003] In the prior art, the detection system uses a vacuum pump to pump up the gas in the tank. In front of the vacuum pump are several detection sensors. Among the multiple detection points, each detection point has a solenoid valve to control the opening and closing of the gas path. When one of the detection points is to be collected, the solenoid valve of this path is opened, and the other solenoid valves are closed, and the gas in this path is dispersed to each detection sensor for detection. In order to filter out the moisture in the gas, an air filter is required for each path, and each air filter is connected to a solenoid valve. When the air filter is full of water, the solenoid valve is opened and the water inside is pumped away by a vacuum pump.

[0004] For example, the invention patent with the Chinese patent publication number CN201876407U discloses a gas concentration monitoring device for mechanical cleaning of oil tanks, including: air circuit: the first air filter is connected to the first three-way solenoid valve, flow meter, combustible gas measuring pump, and combustible gas probe in sequence, and the combustible gas probe is connected to the combustible gas signal output line; six detection channels are connected to the glass fiber filter, two-way solenoid valve and vacuum pump respectively, and the vacuum pump is divided into three paths through the second air filter: the first path is connected to the combustible gas measuring pump through the regulating valve and the first sample gas flow meter; the second path is connected to the oxygen probe through the second sample gas flow meter and the oxygen measuring pump, and the oxygen probe is connected to the oxygen signal output line; the third path is connected to the regulating valve, characterized in that: the first air filter and the first three-way solenoid valve are connected to the activated carbon filter and the photocatalyst molecular sieve in sequence; the six detection channels are connected to the vacuum pump through the second and third three-way solenoid valves and the gas-liquid separator after being divided into two groups in parallel through the two-way solenoid valve. It prevents oxygen and liquid from entering the sensor probe. Improves the detection accuracy.

[0005] For another example, the invention patent with Chinese patent publication number CN105004494A discloses a sealing detection platform and detection method for the oil and gas recovery system of a tank truck, including: a pipeline joint system, which includes a reducer and a main airway pipeline connected to each other, the main airway pipeline is connected to the oil and gas recovery system of the tank truck through the reducer, and a pressure regulating throttle valve is arranged on the main airway pipeline to adjust the pressure and flow of the airflow passing through the main airway pipeline; a positive pressurization system and a negative pressurization system, both of which are connected to the main airway pipeline, and the oil and gas recovery system of the tank truck is inflated or exhausted through the pipeline joint system; a pressure monitoring system, which is arranged on the main airway pipeline to detect the pressure in the main airway pipeline. The invention also provides a sealing detection method for the oil and gas recovery system of a tank truck. The present invention can realize the high integration of detection sensors, pipelines, joints, components and auxiliary equipment, has the advantages of high detection efficiency and convenient operation, and has good mobility, time synchronization and dynamic response correlation.

[0006] There are at least the following problems in the prior art:

[0007] In the prior art, the pipelines of various solenoid valves, air filters, and sensors of the detection system are all connected by air pipes and joints. The connection between the air pipes and joints is prone to loosening or aging and cracking during long-term use, causing leakage of dangerous gases.

[0008] In the prior art, the pipelines of various solenoid valves, air filters, and sensors of the detection system are connected by air pipes and joints. The connection method between the air pipes and joints is prone to loosening or aging and cracking during long-term use, causing the problem of dangerous gas leakage. No effective solution has been proposed yet. Summary of the invention

[0009] The purpose of the present invention is to provide a gas automatic integrated detection system in view of the deficiencies in the prior art.

[0010] The gas automatic integrated detection system comprises an oil tank, a valve island, a pumping module, and a gas detection module connected in sequence, wherein the valve island comprises a valve plate, a first solenoid valve, a second solenoid valve, a drain pipe, an exhaust pipe, an air filter, a filtered drain pipe, and an air inlet pipe for communicating with the oil tank;

[0011] A plurality of pipeline networks are sequentially arranged on the valve plate, each of which is sequentially connected to a first solenoid valve, a second solenoid valve, an air filter, an air intake pipe, and a filter drain pipe, and the plurality of pipeline networks are connected to a drain pipe and an exhaust pipe.

[0012] Furthermore, the pipeline network includes an air intake pipeline, a first end of the air intake pipeline is connected to the air intake pipe, and a second end of the air intake pipeline is connected to the air inlet of the air filter.

[0013] Furthermore, the pipeline network includes an air guide pipeline, a first end of the air guide pipeline is connected to an air outlet of the air filter, and a second end of the air guide pipeline is connected to an air inlet port of the first solenoid valve.

[0014] Furthermore, the pipeline network includes a water pipeline, a first end of the water pipeline is connected to the water outlet of the air filter through a filter drain pipe, and a second end of the water pipeline is connected to the water inlet port of the second solenoid valve.

[0015] Furthermore, the pipeline network also includes an air outlet pipeline, and a first end of the air outlet pipeline is connected to the air outlet port of the first solenoid valve.

[0016] Furthermore, the pipeline network also includes a water outlet pipeline, a first end of the water outlet pipeline is connected to the water outlet port of the second solenoid valve.

[0017] Furthermore, a fixing plate is fixedly provided at both ends of the valve plate.

[0018] Furthermore, the pipeline network also includes a main air outlet pipeline, a first end of the main air outlet pipeline is connected to the exhaust pipe, and a second end of the main air outlet pipeline is respectively connected to the second end of the air outlet pipeline in each pipeline network in the multiple pipeline networks.

[0019] Furthermore, the pipeline network also includes a main water outlet pipeline, a first end of the main water outlet pipeline is connected to the drain pipe, and a second end of the main water outlet pipeline is respectively connected to the second end of the water outlet pipeline in each pipeline network in the multiple pipeline networks.

[0020] Furthermore, a fixing circular hole is provided on the fixing plate.

[0021] Compared with the prior art, the gas automatic integrated detection system of the present invention has the following remarkable advantages:

[0022] 1. The present invention integrates each solenoid valve and air filter on the valve plate by using a containerized valve plate, and transports gas and liquid through the pipeline network inside the valve plate, thereby eliminating the connection mode of the air pipe and the joint, avoiding the possibility of leakage of dangerous gas, and greatly improving the safety of the automatic integrated gas detection system.

[0023] 2. The present invention adopts an integrated structure, which greatly reduces the volume and the occupied area.

[0024] 3. The present invention provides a fixing plate at each end of the valve plate, and provides a fixing circular hole on the fixing plate, so as to facilitate the installation and fixing of the valve plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of the automatic integrated gas detection system of the present invention;

[0026] Figure 2for Figure 1 Schematic diagram of the three-dimensional structure in the middle A direction;

[0027] Figure 3 for Figure 1 A schematic diagram of a local section along the B direction;

[0028] Figure 4 for Figure 2 Schematic diagram of the three-dimensional structure in the C direction.

[0029] Description of reference numerals:

[0030] 100-valve island, 1-valve plate, 2-first solenoid valve, 3-second solenoid valve, 4-drain pipe, 5-exhaust pipe, 6-air filter, 7-intake pipe, 8-filter drain pipe, 9-fixed plate, 10-fixed circular hole, 11-air guide pipe, 12-air outlet pipe, 13-total air outlet pipe, 14-total water outlet pipe, 15-water outlet pipe, 16-water guide pipe, 17-intake pipe; 200-water pumping module, 210-vacuum tank, 220-first vacuum pump; 300-gas detection module, 310--second vacuum pump, 320-sensor; 400-oil tank. DETAILED DESCRIPTION

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0032] like Figure 1 and Figure 2 As shown, the gas automatic integrated detection system includes an oil tank 400, a valve island 100, a pumping module 200, and a gas detection module 300 which are connected in sequence. The valve island 100 includes a valve plate 1, a first solenoid valve 2, a second solenoid valve 3, a drain pipe 4, an exhaust pipe 5, an air filter 6, a filtered drain pipe 8 and an intake pipe 7 for connecting to the oil tank 400. A plurality of pipeline networks (not shown in the figure) are arranged in sequence on the valve plate 1. Each of the plurality of pipeline networks is connected in sequence to the first solenoid valve 2, the second solenoid valve 3, the air filter 6, the intake pipe 7, and the filtered drain pipe 8. The plurality of pipeline networks are connected to the drain pipe 4 and the exhaust pipe 5.

[0033] Furthermore, if Figure 1 As shown, the pumping module 200 includes a vacuum tank 210 and a first vacuum pump 220 which are connected in sequence, wherein the vacuum tank 210 is connected to the drain pipe 4 for extracting water from the drain pipe 4 .

[0034] Furthermore, if Figure 1 As shown, the gas detection module 300 includes a second vacuum pump 310 and a sensor 320 which are connected in sequence, wherein the sensor 320 is connected to the exhaust pipe 5 to extract the gas in the exhaust pipe 5 .

[0035] Furthermore, if Figure 3 As shown, the pipeline network includes an intake pipeline 17 , a first end of the intake pipeline 17 is connected to the intake pipe 7 , and a second end of the intake pipeline 17 is connected to the air inlet of the air filter 6 , for introducing gas from the intake pipe 7 to the air filter 6 .

[0036] Furthermore, if Figure 4 As shown, the pipeline network includes an air guide pipeline 11, a first end of the air guide pipeline 11 is connected to the air outlet of the air filter 6, and a second end of the air guide pipeline 11 is connected to the air inlet port of the first solenoid valve 2, which is used to introduce gas from the air filter 6 to the first solenoid valve 2.

[0037] Furthermore, if Figure 4 As shown, the pipeline network includes a water pipeline 16, a first end of the water pipeline 16 is connected to the water outlet of the air filter 6 through the filter drain pipe 8, and a second end of the water pipeline 16 is connected to the water inlet port of the second solenoid valve 3, for introducing water from the air filter 6 to the second solenoid valve 3.

[0038] Furthermore, if Figure 4 As shown, the pipeline network also includes an air outlet pipeline 12, a first end of the air outlet pipeline 12 is connected to the air outlet port of the first solenoid valve 2, and is used to guide the gas out.

[0039] Furthermore, if Figure 4 As shown, the pipeline network further includes a water outlet pipeline 15, a first end of which is in communication with a water outlet port of the second solenoid valve 3 for draining water.

[0040] Furthermore, if Figure 4 As shown, the pipeline network also includes a total gas outlet pipeline 13, a first end of the total gas outlet pipeline 13 is connected to the exhaust pipe 5, and a second end of the total gas outlet pipeline 13 is respectively connected to the second end of the gas outlet pipeline 12 in each pipeline network in the multiple pipeline networks, so as to aggregate the filtered gas in each pipeline network and discharge it through the exhaust pipe 5.

[0041] Furthermore, if Figure 4 As shown, the pipeline network also includes a main water outlet pipeline 14, the first end of the main water outlet pipeline 14 is connected to the drain pipe 4, and the second end of the main water outlet pipeline 14 is respectively connected to the second end of the water outlet pipeline 15 in each pipeline network in the multiple pipeline networks, so as to collect the water in each pipeline network and discharge it through the drain pipe 4.

[0042] Furthermore, if Figure 4As shown, a fixing plate 9 is fixed at each end of the valve plate 1, and the exhaust pipe 5 and the drain pipe 4 both expose the fixing plate 9. The fixing plate 9 and the valve plate 1 are fastened by screws to facilitate the disassembly and installation of the fixing plate 9 and the valve plate 1. Furthermore, one end of the fixing plate 9 is bent at a bending angle of 90°, and a fixing circular hole 10 is opened on the bent end of the fixing plate 9 for installing and fixing the automatic integrated gas detection system.

[0043] Furthermore, the models of the first solenoid valve 2 and the second solenoid valve 3 are both BMZ141-03I02-A.

[0044] Furthermore, the model of the air filter 6 is AF2000-A.

[0045] The working principle of the gas automatic integrated detection system described in the present invention is:

[0046] A plurality of extraction points are selected on the oil tank 400, and the plurality of extraction points are connected to a plurality of air inlet pipes 7 on the gas automatic integrated detection system through pipelines respectively. The exhaust pipe 5, the sensor 320, and the second vacuum pump 310 are connected in sequence through the pipelines. The drain pipe 4, the vacuum tank 210, and the first vacuum pump 220 are connected in sequence through the pipelines. It should be noted that a power supply unit (not shown in the figure) is also included. The power supply unit includes any one of AC power, lithium battery, and generator for power supply. The second vacuum pump 310 is started to extract the gas in the oil tank 400. In front of the second vacuum pump 310 are several sensors 320 for gas detection. In the plurality of pipeline networks, each pipeline network controls the opening and closing of the gas circuit through a first solenoid valve 2. When one of the pipeline networks is to be collected, the first solenoid valve 2 connected to the pipeline network is opened, and the other first solenoid valves 2 are closed to disperse the gas in the pipeline network to Gas composition detection is performed in each sensor 320. In order to filter out moisture in the gas, each pipeline network is connected to an air filter 6, and each air filter 6 is connected to a second solenoid valve 3. When the air filter 6 is full of water, the second solenoid valve 3 is opened to pump water into the vacuum tank 210, and the water is discharged through the drain valve at the bottom of the vacuum tank 210. Furthermore, the gas components that need to be detected include oxygen, hydrocarbons, hydrogen sulfide, and carbon monoxide. Among them, the sensors 320 used for detecting hydrocarbons, hydrogen sulfide, and carbon monoxide are all of model KD-12B, and the sensor 320 used for detecting oxygen is of model KD-12O. It should be noted that the position of each gas component detection sensor 320 is not restricted. Furthermore, in order to improve the detection effect, multiple gas paths are set in the oil tank 400 to transport to the gas automatic integrated detection system, and the average value is taken for multiple measurements to ensure the accuracy of the detection.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A gas automatic integrated detection system, characterized in that: include: An oil tank (400), a valve island (100), a water pumping module (200), and a gas detection module (300) connected in sequence, wherein the valve island (100) comprises a valve plate (1), a first solenoid valve (2), a second solenoid valve (3), a drain pipe (4), an exhaust pipe (5), an air filter (6), a filtered drain pipe (8), and an air intake pipe (7) for communicating with the oil tank (400); A plurality of pipeline networks are sequentially arranged on the valve plate (1), each of the plurality of pipeline networks is sequentially connected to the first solenoid valve (2), the second solenoid valve (3), the air filter (6), the air intake pipe (7), and the filter drain pipe (8), and the plurality of pipeline networks are in communication with the drain pipe (4) and the exhaust pipe (5); The pipeline network comprises an air intake pipeline (17), a first end of the air intake pipeline (17) being in communication with the air intake pipe (7), and a second end of the air intake pipeline (17) being in communication with an air intake port of the air filter (6); The pipeline network comprises an air guide pipeline (11), a first end of the air guide pipeline (11) being in communication with an air outlet of the air filter (6), and a second end of the air guide pipeline (11) being in communication with an air inlet port of the first solenoid valve (2); The pipeline network comprises a water conduit (16), a first end of the water conduit (16) being in communication with a water outlet of the air filter (6) via the filter drain pipe (8), and a second end of the water conduit (16) being in communication with a water inlet port of the second solenoid valve (3); The pipeline network further comprises an air outlet pipeline (12), a first end of the air outlet pipeline (12) being in communication with an air outlet port of the first solenoid valve (2); The pipeline network further comprises a water outlet pipeline (15), a first end of the water outlet pipeline (15) being in communication with a water outlet port of the second solenoid valve (3); The pipeline network further comprises a total gas outlet pipeline (13), a first end of the total gas outlet pipeline (13) being in communication with the exhaust pipe (5), and a second end of the total gas outlet pipeline (13) being in communication with a second end of the gas outlet pipeline (12) in each of the pipeline networks in the plurality of pipeline networks; The pipeline network further comprises a main water outlet pipeline (14), a first end of the main water outlet pipeline (14) being in communication with the drain pipe (4), and a second end of the main water outlet pipeline (14) being in communication with a second end of the water outlet pipeline (15) in each pipeline network of the plurality of pipeline networks.

2. The gas automatic integrated detection system according to claim 1, characterized in that: A fixing plate (9) is fixedly provided at each end of the valve plate (1).

3. The gas automatic integrated detection system according to claim 2, characterized in that: The fixing plate (9) is provided with a fixing circular hole (10).

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