Accident pipeline detection device

Abstract

The invention belongs to the technical field of centrifugal factory automatic control, and particularly relates to an accident pipeline detection device. The accident pipeline detection device comprises an accident pipeline detection device body, a drawer, a digital display instrument assembly, a detection meter and an internal connection structure, the accident pipeline detection device body is integrated in a movable trolley mode, and the internal connection structure is installed in the accident pipeline detection device body. The functions of pipeline residual material collection, line conversion and parameter detection are achieved; the internal connection structure performs internal pipeline and equipment solidification in a drawer packaging form; the top of the accident pipeline detection device body is divided into two areas, the left is a digital display instrument assembly, and the right is a detection meter. According to the invention, the parameter control precision is improved, and manual operation is reduced; and the detection requirements under various conditions and occasions can be met at the same time.

Description

Technical Field

[0001] The invention belongs to the technical field of centrifugal plant automatic control, and in particular relates to an accident pipeline detection device. Background Art

[0002] In order to ensure the smooth operation of the main process production, the centrifugal factory sets up automatic protection interlocks in the control system. When the interlock is triggered, the material will be discharged to protect the main equipment. However, after the discharge, some process logistics may remain in some pipelines and valve nodes, which will affect the process parameters when the accident is restored. Therefore, before the accident is restored, it is necessary to manually break through, sample, and detect the characteristic nodes, which not only requires a lot of manual operation, but also may pose a risk of polluting the working environment. Therefore, an accident pipeline detection device is designed. When an accident occurs, it can be directly connected to the residual node to automatically collect the residue and perform pipeline parameter detection. Summary of the invention

[0003] The technical problem solved by the present invention is to provide an accident pipeline detection device, which improves the accuracy of parameter control and reduces manual operations; and can simultaneously meet the detection requirements under various conditions and occasions.

[0004] The technical solution adopted by the present invention is:

[0005] An accident pipeline detection device comprises an accident pipeline detection device body, a drawer, a digital display instrument assembly, a detection meter, and an internal connection structure. The accident pipeline detection device body is integrated in the form of a mobile trolley, and an internal connection structure is installed inside the accident pipeline detection device body to realize the collection of pipeline residual materials, line conversion, and parameter detection functions; the internal connection structure solidifies the internal pipeline and equipment in the form of drawer packaging; the top part of the accident pipeline detection device body is divided into two areas, the left side is the digital display instrument assembly, and the right side is the detection meter.

[0006] The drawer includes a beam, a hole, a recessed door, and a hinge. The drawer is a rectangular structure with 8 beams as a skeleton. A top plate is provided on the top with a hole. The recessed door is hinged on one side of the top plate, and the recessed door is hinged to the upper left beam of the drawer.

[0007] Paste a circle of waterproof edge around the recessed door to fit the recessed gap of the external frame of the beam.

[0008] A heat dissipation hole is opened in the middle three-quarters of the recessed door, and the heat dissipation hole is a cone. Each drawer door is covered with a layer of sound insulation cotton, and the sound insulation cotton is fixed to the heat dissipation hole on the inner side of the drawer with rivets.

[0009] The digital display instrument assembly includes a mounting plate, an instrument bracket, and a digital display meter. The instrument bracket is mounted on the mounting plate by welding. The instrument bracket is triangularly fixed at an inclination angle of 30°. Two digital display meters are connected by rivets on the front panel of the instrument bracket. The digital display meter is connected to the detection meter through hard wiring and a crossbeam.

[0010] The internal connection components are respectively installed in four drawers in a solidified integrated manner, including a material recovery unit, a vacuum unit, a detection unit, and a control unit.

[0011] The material recovery unit is installed in the upper left drawer, and two stop valves are fixed by flange connection. The inlet and outlet of the stop valve are connected to the exhaust gas purification container. The exhaust gas purification container is fixed in the drawer by snap connection, and an electric valve is connected behind each stop valve by threaded connection.

[0012] The vacuum unit is installed in the lower left drawer, and a vacuum pump and an exhaust gas collection device are fixed by a snap connection. The vacuum pump is connected to the inlet and outlet pressure pipes and the exhaust gas collection device in a KF16 manner.

[0013] The detection unit is installed in the upper right drawer, and the detection cavity is fixed by welding. The detection cavity is fixed with 8 pressure-inducing columns by welding, 6 at the top and 2 at the bottom. The bottom pressure-inducing columns are respectively connected to the detection cavity air inlet pipeline and the detection cavity air outlet pipeline by welding, and the top 6 pressure-inducing columns are connected to 6 detection meters by KF16 quick connection.

[0014] One end of the detection chamber air intake pipeline is connected to the air intake pipe buffer tank, and the other end of the air intake pipe buffer tank is connected to the detection chamber; there are three detection chamber air intake pipelines, the first one is connected to two vacuum shut-off valves in a threaded connection; the second one is connected to a high-frequency solenoid valve in a threaded connection; the third one is connected to an electric valve and a shut-off valve in a threaded connection, and the three pipelines are connected in parallel;

[0015] The detection chamber air outlet pipeline is connected to four pressure-leading pipelines respectively. The first pressure-leading pipeline is connected to the vacuum pump by means of KF16 quick connection, and a series stop valve is arranged on it; the second pressure-leading pipeline is threadedly connected to a micro-pressure electric valve, and the outlet end of the micro-pressure electric valve is connected to the first pressure-leading pipe by means of a flange connection to meet in front of the vacuum pump; the third pressure-leading pipeline is threadedly connected to the air outlet pipe electric valve and the air outlet pipe stop valve, and the outlet of the air outlet pipe electric valve is connected to the first pressure-leading pipe by means of a flange connection to meet in front of the vacuum pump; the fourth pressure-leading pipeline is threadedly connected to the air outlet pipe high-frequency solenoid valve, and the outlet of the air outlet pipe high-frequency solenoid valve is connected to the buffer tank by means of a flange connection, and the buffer tank is connected to the first pressure-leading pipe to meet in front of the vacuum pump; the other ends of the three parallel detection chamber air inlet pipelines are connected to the buffer tank.

[0016] The control unit is fixed in the lower right drawer by means of a card slot connection. The control part is integrated in a modular manner, including four types of signal input and output ports: DI, AI, DO, and AO, and a CPU module is used for program storage.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) The present invention provides an accident pipeline detection device, which uses a material recovery unit to collect residual materials and further processes and discards them through an exhaust device, which not only reduces the loss of materials, but also further protects the detection cavity and avoids corrosion of detection components by excessive residual materials;

[0019] (2) The present invention provides an accident pipeline detection device, which adopts a hardware structure of a buffer tank, a vacuum stop valve, and a high-frequency solenoid valve, and is matched with automatic pressure regulation, so that the accuracy of parameter control is improved while reducing manual operation;

[0020] (3) The accident pipeline detection device provided by the present invention has a multi-pipeline redundant design for the air inlet pipeline and the air outlet pipeline, which can simultaneously meet the detection requirements under various conditions and occasions;

[0021] (4) The present invention provides an accident pipeline detection device with a drawer-integrated component design, which provides a more convenient and efficient operation, maintenance, use and inspection method.

[0022] (5) The present invention provides an accident pipeline detection device, in which the component drawer is designed with heat dissipation and waterproofing to meet the requirements of use in various harsh environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the hardware connection structure of the accident pipeline detection device provided by the embodiment of the present invention. ;

[0024] Figure 2 is a schematic diagram of a drawer provided in an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the installation structure of a digital display instrument according to an embodiment of the present invention;

[0026] Figure 4 It is a schematic diagram of the structure of an internal connection component of an embodiment of the present invention.

[0027] In the figure: 1-the main body of the accident pipeline detection device; 2-drawer; 3-digital display instrument assembly; 4-detection meter; 5-internal connection structure; 7-crossbeam; 8-hole; 9-recessed door; 10-waterproof edge; 11-heat dissipation hole; 12-sound insulation cotton; 13-hinge; 14-mounting plate; 15-instrument bracket; 16-digital display meter; 17-material recovery unit; 18-vacuum unit; 19-detection chamber outlet pipeline; 20-detection chamber inlet pipeline; 21-detection unit; 22-exhaust Purification container; 23-exhaust gas collection device; 24-vacuum pump; 25-electric valve; 26-electric valve; 27-high-frequency solenoid valve of the outlet pipe; 28-buffer tank; 29-detection chamber; 30-detection meter; 31-stop valve; 32-high-frequency solenoid valve; 33-electric valve; 34-stop valve; 35-intake pipe buffer tank; 36-outlet pipe electric valve; 37-outlet pipe stop valve; 38-micro-pressure electric valve; 39-series stop valve; 40-electric valve; 41-vacuum stop valve. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] like Figure 1As shown, an accident pipeline detection device provided by the present invention includes an accident pipeline detection device body 1, a drawer 2, a digital display instrument assembly 3, a detection meter 4, and an internal connection structure 5. The accident pipeline detection device body 1 is integrated in the form of a mobile trolley, four steering wheels are designed at the bottom of the trolley, and a handrail is arranged on the right side of the trolley for pushing and pulling the trolley to move; the internal connection structure 5 is installed inside the accident pipeline detection device body 1 to realize the collection of pipeline residual materials, line conversion, and parameter detection functions; the internal connection structure 5 is respectively packaged in the form of drawers 2 to solidify the internal pipelines and equipment; the top part of the accident pipeline detection device body 1 has two areas, the left side is the digital display instrument assembly 3, and the right side is the detection meter 4.

[0032] like Figure 2 As shown, the drawer 2 includes a beam 7, a hole 8, a recessed door 9, a waterproof edge 10, a heat dissipation hole 11, a sound insulation cotton 12, and a hinge 13. The drawer 2 is a rectangular parallelepiped structure, with 8 beams 7 as a skeleton, a top plate on the top, a hole 8 on the top plate, a recessed door 9 connected to a hinge 13 on one side of the top plate, and the recessed door 9 is connected to the upper left beam 7 of the drawer 2 by the hinge 13. A waterproof edge 10 is pasted around the recessed door 9 to fit the recessed notch of the external frame of the beam 7 of the drawer 2;

[0033] A heat dissipation hole 11 is opened in the middle three-quarters area of ​​the recessed door 9. Considering that the drawer 2 needs to be refrigerated and collected, there is a situation where the temperature and humidity difference inside and outside the drawer 2 is exposed, and the heat dissipation hole 11 is designed as a cone. The inside of the cone is hollow, the inside of the drawer 2 is the bottom of the cone, and the outside is the top of the cone; considering that the inside of the device needs to be soundproofed, a layer of sound insulation cotton 12 is covered on the door of each drawer 2, and the sound insulation cotton 12 is fixed to the heat dissipation hole 11 on the inside of the drawer 2 with rivets.

[0034] Furthermore, a hole is opened on the top of the upper right drawer 2 of the device to install a detection instrument and a manual valve.

[0035] Furthermore, a hole is cut in the bottom of each drawer 2 for installing internal connection components.

[0036] like Figure 3 As shown, the digital display instrument assembly 3 includes a mounting plate 14, an instrument bracket 15, and a digital display meter 16. The instrument bracket 15 is mounted on the mounting plate 14 by welding. The instrument bracket 15 is triangularly fixed at an angle of 30°. Two digital display meters 16 are connected by rivets on the front panel of the instrument bracket 15. The digital display meter 16 is connected to the detection meter 4 through a crossbeam 7 by hard wiring.

[0037] like Figure 4As shown, the internal connection components 5 are respectively installed in the four drawers 2 in a solidified integrated manner, including a material recovery unit 17, a vacuum unit 18, a detection unit 21, and a control unit.

[0038] The material recovery unit 17 is installed in the upper left drawer 2, and two stop valves 31 are fixed by flange connection. The inlet and outlet of the stop valve 31 are connected to the exhaust gas purification container 22. The exhaust gas purification container 22 is fixed in the drawer 2 by snap connection. An electric valve 26 is connected behind each stop valve 31 by threaded connection; as the processing part where the pipeline participates in the first entry of materials, most of the useful substances are stored in the exhaust gas purification container 22 through the opening and closing of the valve and the collection of the container.

[0039] The vacuum unit 18 is installed in the lower left drawer 2, and a vacuum pump 24 and an exhaust gas collection device 23 are fixed by a snap connection. The vacuum pump 24 is connected to the inlet and outlet pressure pipes and the exhaust gas collection device 23 by KF16; it serves as the power source for the vacuum of the entire device and collects harmful substances in the exhaust gas at the same time.

[0040] The detection unit 21 is installed in the upper right drawer 2, and the detection chamber 29 is fixed by welding. The detection chamber 29 is fixed by welding with 8 pressure-inducing columns, 6 at the top and 2 at the bottom. The bottom pressure-inducing columns are respectively connected to the detection chamber air inlet pipeline 20 and the detection chamber air outlet pipeline 19 by welding, and the top 6 pressure-inducing columns are connected to 6 detection meters 4 by KF16 quick connection. When the device switches to the detection line, the internal pressure of the cavity is adjusted by the 2 pressure-inducing columns at the bottom of the detection chamber, which is used to adjust the instrument parameters of the top 6 pressure-inducing columns. The 6 instruments are divided into 2 groups, one group of which transmits signals to the digital display instrument assembly 3; the other group of signals is transmitted to the controller in the lower right drawer 2.

[0041] One end of the detection chamber air intake pipeline 20 is connected to the air intake pipe buffer tank 35, and the other end of the air intake pipe buffer tank 35 is connected to the detection chamber 29; there are three detection chamber air intake pipelines 20, the first one is connected to two vacuum shut-off valves in a threaded manner; the second one is connected to a high-frequency solenoid valve 32 in a threaded manner; the third one is connected to an electric valve 33 and a shut-off valve 34 in a threaded manner, and the detection chamber air intake pipeline 20 is used to adjust the detection chamber pressure, wherein the first vacuum line is used as a manual adjustment line, the second vacuum line is used as an automatic adjustment line, and the third vacuum line is used as an electric adjustment line. The above three pipeline switching is achieved by switching the valve status, and the three pipelines are connected in parallel;

[0042] The detection chamber air outlet pipeline 19 is connected to four pressure-leading pipelines respectively. The first pressure-leading pipeline is connected to the vacuum pump 24 in a KF16 quick-connect manner, and a series stop valve 39 is provided on it; the second pressure-leading pipeline is threadedly connected to a micro-pressure electric valve 38, and the outlet end of the micro-pressure electric valve 38 is connected to the first pressure-leading pipe in a flange connection manner to meet in front of the vacuum pump 24; the third pressure-leading pipeline is threadedly connected to the air outlet pipe electric valve 36 and the air outlet pipe stop valve 37, and the outlet of the air outlet pipe electric valve 36 is connected to the first pressure-leading pipe in a flange connection manner to meet in front of the vacuum pump 24; the fourth pressure-leading pipeline is threadedly connected to the air outlet pipe high-frequency solenoid valve 27, and the outlet of the air outlet pipe high-frequency solenoid valve 27 is connected to the buffer tank 28 in a flange connection manner, and the buffer tank 28 is connected to the first pressure-leading pipe to meet in front of the vacuum pump 24; the other ends of the three parallel detection chamber air inlet pipelines 20 are connected to the buffer tank 28.

[0043] The control unit is fixed in the lower right drawer 2 in a card slot connection manner. The control part is integrated in a modular manner, including four types of signal input and output ports: DI, AI, DO, and AO. The program is stored in a CPU module. The internal control logic is as follows:

[0044] A controller is fixed in the lower right drawer 2 by means of a card slot connection, and is integrated in a modular manner, including four types of signal input and output ports: DI, AI, DO, and AO. The program is stored in a CPU module, and the internal control logic is as follows:

[0045] 1) When the device is started, the valve position, pressure and vacuum pump 24 status are automatically started;

[0046] 2) Automatically adjust the pressure according to the set value of the digital display, control the high-frequency solenoid valve to quickly shut down, and adjust the switch state of the electric valve.

[0047] 3) The self-locking program is preset, and the exhaust pipeline and the status of the electric valves before and after the detection chamber are linked. The pipeline can be connected only when the preset conditions are met.

[0048] The material pipeline is connected to the detection chamber 29 and the stop valve 31 through pipelines respectively.

[0049] The working principle of the present invention is:

[0050] 1) Status detection. When the device is started, the valve position, pressure, and vacuum pump 24 status will be automatically detected;

[0051] 2) Pressure regulation: The pressure is automatically regulated according to the setting value of the digital display, the high-frequency solenoid valve is controlled to shut off quickly, and the switch state of the electric valve is adjusted.

[0052] 3) Pipeline switching. The preset self-locking program links the exhaust pipeline and the electric valve status of the pipelines before and after the detection chamber. The pipeline can be connected only when the preset conditions are met.

[0053] The state detection: connect all valves, vacuum pump 24 states, instrument signal terminals and controller DI, AI signal input terminals in a hard-wired manner. The controller converts the electrical signal into an internal digital signal. Built-in judgment method:

[0054] 1. Equipment stop state: vacuum pump 24 stops, valve is closed, pipeline pressure value is less than 50Pa. When the above conditions are met, the internal control logic of the controller is turned on, and the control output relay outputs that the current equipment is in a stopped state.

[0055] 2. Equipment startup status: vacuum pump 24 is started, valve is open, and pipeline pressure value is greater than 100 Pa. When the above conditions are met, the internal control logic of the controller is turned on, and the control output relay outputs that the current equipment is in the startup state.

[0056] The pressure regulation is as follows: connect the digital instrument signal terminal to the controller AI input terminal by hard wiring; connect the high-frequency solenoid valve and electric valve control signal line to the controller DO output terminal. Through the PID control model, the pressure parameters of the detection chamber are associated to automatically adjust the pressure. The pressure gauge on the first pressure-leading column at the upper end of the detection chamber is used as the interlocking parameter control value, and the controller adjusts the opening of the high-frequency solenoid valve and switches the electric valve of the outlet pipeline to vent air, so as to achieve automatic adjustment of the pressure parameters.

[0057] The pipeline switching: The accident pipeline detection device is a multi-process, process-based work. Only one operation can be performed in a specific time period, and the premise of the current operation is that the previous work has been completed and the conditions for the next operation are met. Therefore, the pipeline switching design is carried out:

[0058] 1) Divide the internal pipelines and valves into equipment connection pipelines, material recovery pipelines, and detection pipelines;

[0059] 2) Set the self-locking function, and use the valve status, vacuum pump 24 status, and pipeline pressure as the judgment conditions. For example, when the valve of the material recovery pipeline is opened and the internal pressure parameters of the pipeline change, it is determined that the current state is not the material recovery state, and it is forbidden to open other pipeline-related valves. Similarly, the inspection pipeline and equipment connection pipeline are judged.

[0060] The working status is judged by the combination of valve status. The material recovery status is judged by the fact that the front and rear electric valves of the exhaust gas purification device are both open. When the status is reached, the device is in the material recovery status by default, and any operation except material recovery is prohibited.

[0061] The pipeline detection state is determined by the front and rear electric valves of the detection chamber and the parameters in the detection table 4. If at least one of the front and rear electric valves is in the open state and the pressure in the detection chamber is greater than 100Pa, the condition is met. At this time, the device is in the pipeline detection state by default, and any operation except pipeline detection is prohibited;

[0062] The device connection status is determined by whether the electric valve in front of the detection chamber and the electric valve in front of the exhaust gas purification device are in the closed state. If the condition is met, the device is in the device connection state by default, and any device operation is prohibited at this time.

[0063] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0064] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An accident pipeline detection device, characterized in that: The invention comprises an accident pipeline detection device body (1), a drawer (2), a digital display instrument assembly (3), a detection meter (4), and an internal connection structure (5). The accident pipeline detection device body (1) is integrated in the form of a mobile trolley. The internal connection structure (5) is installed inside the accident pipeline detection device body (1) to realize the functions of collecting residual materials in the pipeline, line conversion, and parameter detection; the internal connection structure (5) is respectively packaged in the form of a drawer (2) to solidify the internal pipeline and equipment; the top part of the accident pipeline detection device body (1) is divided into two areas, the left side is the digital display instrument assembly (3), and the right side is the detection meter (4).

2. The accident pipeline detection device according to claim 1, characterized in that: The drawer (2) comprises a crossbeam (7), a hole (8), a recessed door (9), and a hinge (13). The drawer (2) is a rectangular parallelepiped structure, with eight crossbeams (7) as a skeleton, a top plate provided on the top, a hole (8) opened on the top plate, a recessed door (9) connected to one side of the top plate by a hinge (13), and the recessed door (9) is connected to the upper left crossbeam (7) of the drawer (2) by a hinge (13).

3. The accident pipeline detection device according to claim 2, characterized in that: A waterproof edge (10) is pasted around the inner recessed door (9) to fit the inner recessed notch of the outer frame of the crossbeam (7).

4. The accident pipeline detection device according to claim 2, characterized in that: A heat dissipation hole (11) is provided in the middle three-quarters of the recessed door (9), and the heat dissipation hole (11) is a cone. A layer of sound insulation cotton (12) is covered on each drawer (2) door, and the sound insulation cotton (12) is fixed to the heat dissipation hole (11) on the inner side of the drawer (2) by rivets.

5. The accident pipeline detection device according to claim 2, characterized in that: The digital display instrument assembly (3) comprises a mounting plate (14), an instrument bracket (15), and a digital display meter (16). The instrument bracket (15) is mounted on the mounting plate (14) by welding. The instrument bracket (15) is triangularly fixed at an angle of 30°. Two digital display meters (16) are connected on the front panel of the instrument bracket (15) by rivets. The digital display meter (16) is connected to the detection meter (4) through a crossbeam (7) by hard wiring.

6. The accident pipeline detection device according to claim 5, characterized in that: The internal connection components (5) are respectively installed in the four drawers (2) in a solidified integrated manner, and include a material recovery unit (17), a vacuum unit (18), a detection unit (21), and a control unit.

7. The accident pipeline detection device according to claim 6, characterized in that: The material recovery unit (17) is installed in the upper left drawer (2), and two stop valves (31) are fixed by flange connection. The inlet and outlet of the stop valve (31) are connected to the exhaust gas purification container (22). The exhaust gas purification container (22) is fixed in the drawer (2) by snap connection. An electric valve (26) is connected behind each stop valve (31) by thread connection.

8. The accident pipeline detection device according to claim 7, characterized in that: The vacuum unit (18) is installed in the lower left drawer (2), and a vacuum pump (24) and an exhaust gas collection device (23) are fixed in a snap-fit ​​connection manner. The vacuum pump (24) is connected to the inlet and outlet pressure pipes and the exhaust gas collection device (23) in a KF16 manner.

9. The accident pipeline detection device according to claim 8, characterized in that: The detection unit (21) is installed in the upper right drawer (2), and the detection chamber (29) is fixed by welding. The detection chamber (29) is fixed with 8 pressure-guiding columns by welding, 6 at the top and 2 at the bottom. The bottom pressure-guiding columns are respectively connected to the detection chamber air inlet pipeline (20) and the detection chamber air outlet pipeline (19) by welding, and the top 6 pressure-guiding columns are connected to 6 detection meters (4) by KF16 quick connection. One end of the detection chamber air intake pipeline (20) is connected to the air intake pipe buffer tank (35), and the other end of the air intake pipe buffer tank (35) is connected to the detection chamber (29); the detection chamber air intake pipeline (20) has three pipelines, the first of which is connected to two vacuum shut-off valves in a threaded manner; the second of which is connected to a high-frequency electromagnetic valve (32) in a threaded manner; and the third of which is connected to an electric valve (33) and a shut-off valve (34) in a threaded manner, and the three pipelines are connected in parallel; The detection chamber air outlet pipeline (19) is connected to four pressure-inducing pipelines respectively. The first pressure-inducing pipeline is connected to the vacuum pump (24) by means of a KF16 quick connection, and a series stop valve (39) is arranged on the first pressure-inducing pipeline. The second pressure-inducing pipeline is connected to a micro-pressure electric valve (38) by means of a threaded connection, and the outlet end of the micro-pressure electric valve (38) is connected to the first pressure-inducing pipeline by means of a flange connection and merges in front of the vacuum pump (24). The third pressure-inducing pipeline is connected to the air outlet pipe electric valve (36) and the air outlet pipe stop valve (39) by means of a threaded connection. The outlet of the air outlet pipe electric valve (36) is connected to the first pressure-guiding pipe in a flange connection manner and merges in front of the vacuum pump (24); the fourth pressure-guiding pipeline is connected to the air outlet pipe high-frequency electromagnetic valve (27) by threading, and the outlet of the air outlet pipe high-frequency electromagnetic valve (27) is connected to the buffer tank (28) in a flange connection manner, and the buffer tank (28) is connected to the first pressure-guiding pipe and merges in front of the vacuum pump (24); the other ends of the three parallel detection chamber air inlet pipelines (20) are connected to the buffer tank (28).

10. The accident pipeline detection device according to claim 9, characterized in that: The control unit is fixed in the lower right drawer (2) in a card slot connection manner. The control part is integrated in a modular manner, including four types of signal input and output ports: DI, AI, DO, and AO, and a CPU module is used for program storage.

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