Analysis instrument carrier gas operation safety monitoring system

Abstract

The utility model discloses a carrier gas operation safety monitoring system for an analysis instrument, which relates to the field of analysis instruments and comprises an analysis instrument cabinet, a local control cabinet and a carrier gas bottle, the carrier gas bottle is connected with a first gate valve, a circulation pipeline is connected between the first gate valve and the analysis instrument cabinet, and the circulation pipeline is connected with a monitoring structure. According to the utility model, the combustible gas alarm, the first remote transmission pressure transmitter with the remote transmission function, the second remote transmission pressure transmitter with the remote transmission function and the remote transmission pressure switch are applied to the whole analysis carrier gas loop, so that the service condition of the carrier gas can be continuously monitored and analyzed in real time, and related data are collected in the local control cabinet; according to the technical scheme, the analysis instrument is connected with the DCS computer and is transmitted to a monitoring picture of the DCS computer through data communication for real-time monitoring of an operator, and the analysis instrument is more reliable in the process of analyzing the process gas only under the condition of ensuring stable operation of the carrier gas, so that reliable guarantee is provided for safe and long-period stable operation of the device.

Description

Technical Field

[0001] The utility model relates to the technical field of analytical instruments, in particular to a carrier gas operation safety monitoring system for analytical instruments. Background Art

[0002] The analytical instrument cabinet is a specially designed instrument cabinet equipped with a carrier gas bottle. This design enables the analytical instrument to obtain the required gas directly from the carrier gas bottle in the cabinet for the instrument's analysis and measurement work.

[0003] In the prior art, in daily production, analytical instruments are used in many scenarios. Most operators only care about the reliability of the analytical values ​​of the analytical instruments and often ignore the stability and safety of the carrier gas used in the analyzer. Many bottled carrier gases (such as hydrogen, nitrogen, etc.) used in conjunction with analytical instruments are prone to leakage, which is not conducive to the long-term stable operation of the analytical instruments and is accompanied by great safety hazards. Therefore, a carrier gas operation safety monitoring system for analytical instruments is needed to meet people's needs. Utility Model Content

[0004] The utility model aims to provide a safety monitoring system for carrier gas operation of an analytical instrument to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a safety monitoring system for carrier gas operation of an analytical instrument, comprising an analytical instrument cabinet, an on-site control cabinet and a carrier gas bottle, the carrier gas bottle is connected with a first gate valve, a flow pipeline is connected between the first gate valve and the analytical instrument cabinet, a monitoring structure is connected to the flow pipeline, a positioning seat is movably installed on the carrier gas bottle, a supporting structure is installed on the positioning seat, a rotating seat is installed on the supporting structure, and a handling structure is installed on the rotating seat;

[0006] The monitoring structure includes a second gate valve, a third gate valve and a fourth gate valve, which are all connected to a circulation pipeline, a filter pressure reducing valve is connected to the circulation pipeline, the filter pressure reducing valve is located between the second gate valve and the third gate valve, a pre-filter pressure gauge and a post-filter pressure gauge are connected to the filter pressure reducing valve, the second gate valve is connected to a first remote pressure transmitter, the first remote pressure transmitter is electrically connected to a gas cylinder remote pressure display panel, the third gate valve is connected to a second remote pressure transmitter, the second remote pressure transmitter is electrically connected to a pressure display panel after the pressure reducing valve, the fourth gate valve is connected to a remote pressure switch, and the remote The pressure transmission switch is electrically connected to the alarm light screen behind the pressure reducing valve, the gas cylinder remote pressure display panel, the pressure display panel behind the pressure reducing valve and the alarm light screen behind the pressure reducing valve are all electrically connected to the local control cabinet, the local control cabinet is electrically connected to the alarm digital display panel, the alarm digital display panel is electrically connected to the combustible gas alarm, the combustible gas alarm is fixedly installed with an alarm bracket, the gas cylinder remote pressure display panel, the pressure display panel behind the pressure reducing valve, the alarm light screen behind the pressure reducing valve and the alarm digital display panel are electrically connected to the same communicator, the communicator is electrically connected to a switch, and the switch is electrically connected to a DCS computer.

[0007] Preferably, the support structure includes multiple support rods, which are fixedly mounted on the bottom side of the positioning seat, on which rollers are rotatably mounted, on which a support frame is movably mounted, the positioning seat is rotatably mounted on the support frame, and on which four universal wheels with brakes are symmetrically and movably mounted on the bottom side of the support frame.

[0008] Preferably, a slide rail groove is provided on the support frame, and the roller is movably installed in the slide rail groove.

[0009] Preferably, the positioning seat is provided with two positioning grooves, and the carrier gas bottle is movably installed in a corresponding one of the positioning grooves.

[0010] Preferably, the transport structure includes a flip seat, which is rotatably mounted on a rotating seat, which is rotatably mounted on the top side of the support frame, and two connecting rods are fixedly mounted on the flip seat, and L-shaped lifting rods are rotatably mounted on the two connecting rods, and two locating pins are movably mounted on the two L-shaped lifting rods, and the same mounting plate is fixedly mounted on the two locating pins located on the same side, and the two mounting plates are respectively fixedly mounted on both sides of the gas carrier bottle, and the same mounting strip is fixedly mounted on the top sides of the two connecting rods, and a handle is fixedly mounted on the top side of the mounting strip.

[0011] Preferably, two positioning screws are movably mounted on the mounting bar, positioning screw holes are provided on the two L-shaped lifting rods, and the two positioning screws are respectively threadedly mounted in the two positioning screw holes.

[0012] Preferably, the L-shaped lifting rod is provided with two mounting holes, and two positioning pins are movably mounted in the two mounting holes respectively.

[0013] The beneficial effects of the utility model are:

[0014] In the utility model, by applying the combustible gas alarm, the first remote pressure transmitter with remote transmission function, the second remote pressure transmitter and the remote pressure switch to the entire analytical carrier gas loop, real-time continuous and uninterrupted monitoring and analysis of carrier gas usage can be carried out, and relevant data can be collected in the local control cabinet, and transmitted to the monitoring screen of the DCS computer through data communication for real-time monitoring by the operator. Only when the carrier gas is ensured to run smoothly, the analytical instrument will be more reliable in the process of analyzing the process gas, thereby providing reliable guarantee for the safe and long-term stable operation of the device.

[0015] In the utility model, two gas carrier bottles are provided, one of which can be used as a spare, so that the interface can be quickly connected to the spare gas carrier bottle for quick replacement; and by providing a universal wheel with a brake on the support frame, the position of the gas carrier bottle can be easily pushed and moved, so that the placement of the gas carrier bottle can be adjusted according to the use environment; for the used gas carrier bottle, it can be rotated to be adjusted between the two L-shaped lifting rods, and then connected to the used gas carrier bottle by flipping the two L-shaped lifting rods, and then the handle is pressed down, and the used gas carrier bottle can be tilted up by the lever principle to be taken out of the positioning seat, and then the gas carrier bottle can be placed on the ground by turning the handle, and vice versa, it can be installed, so as to replace the gas carrier bottle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of an analytical instrument carrier gas operation safety monitoring system proposed by the utility model;

[0017] Figure 2 This is a schematic diagram of the connection structure of a carrier gas operation safety monitoring system for an analytical instrument proposed by the utility model;

[0018] Figure 3 This is a structural schematic diagram of a support frame part of an analytical instrument carrier gas operation safety monitoring system proposed by the utility model;

[0019] Figure 4 This is a structural schematic diagram of an L-shaped lifting rod part of an analytical instrument carrier gas operation safety monitoring system proposed by the utility model;

[0020] Figure 5 The utility model provides a schematic structural diagram of the rotating seat part of the carrier gas operation safety monitoring system of an analytical instrument.

[0021] In the figure: 100, analytical instrument cabinet; 101, local control cabinet; 102, carrier gas bottle; 103, first gate valve; 104, circulation pipeline; 105, second gate valve; 106, third gate valve; 107, fourth gate valve; 108, filter pressure reducing valve; 109, pressure gauge before filtration; 110, pressure gauge after filtration; 111, first remote pressure transmitter; 112, remote pressure display panel of gas cylinder; 113, second remote pressure transmitter; 114, pressure display panel after pressure reducing valve; 115, remote pressure switch; 116, alarm light screen after pressure reducing valve; 117, communicator; 1 18. Switch; 119. DCS computer; 120. Alarm digital display panel; 121. Combustible gas alarm; 122. Alarm bracket; 200. Positioning seat; 201. Support rod; 202. Roller; 203. Support frame; 204. Universal wheel with brake; 205. Slide rail groove; 206. Positioning groove; 300. Rotating seat; 301. Flipping seat; 302. Connecting rod; 303. L-shaped lifting rod; 304. Positioning pin; 305. Mounting plate; 306. Mounting strip; 307. Handle; 308. Positioning screw; 309. Positioning screw hole; 310. Mounting hole. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Example 1: Reference Figure 1-5 A safety monitoring system for carrier gas operation of an analytical instrument comprises an analytical instrument cabinet 100, an on-site control cabinet 101 and a carrier gas bottle 102, wherein the carrier gas bottle 102 is connected with a first gate valve 103, a flow pipeline 104 is connected between the first gate valve 103 and the analytical instrument cabinet 100, a monitoring structure is connected to the flow pipeline 104, a positioning seat 200 is movably mounted on the carrier gas bottle 102, a supporting structure is mounted on the positioning seat 200, a rotating seat 300 is mounted on the supporting structure, and a transporting structure is mounted on the rotating seat 300;

[0024] The monitoring structure includes a second gate valve 105, a third gate valve 106 and a fourth gate valve 107, which are all connected to a circulation pipeline 104, a filter pressure reducing valve 108 is connected to the circulation pipeline 104, the filter pressure reducing valve 108 is located between the second gate valve 105 and the third gate valve 106, a pre-filter pressure gauge 109 and a post-filter pressure gauge 110 are connected to the filter pressure reducing valve 108, the second gate valve 105 is connected to a first remote pressure transmitter 111, and the first remote pressure transmitter 111 is electrically connected to a gas cylinder remote pressure display panel 112, the third gate valve 106 is connected to a second remote pressure transmitter 113, the second remote pressure transmitter 113 is electrically connected to a pressure display panel 114 behind the pressure reducing valve, the fourth gate valve 107 is connected to a remote pressure switch 115, the remote pressure switch 115 is electrically connected to an alarm light screen 116 behind the pressure reducing valve, the gas cylinder remote pressure display panel 112, the pressure display panel 114 behind the pressure reducing valve and the alarm light screen 116 behind the pressure reducing valve are all electrically connected to the local control cabinet 101, the local control cabinet 101 is electrically connected to an alarm digital display panel 120, the alarm digital display panel 120 0 is electrically connected to a combustible gas alarm 121, an alarm bracket 122 is fixedly installed on the combustible gas alarm 121, the gas cylinder remote pressure display panel 112, the pressure display panel 114 after the pressure reducing valve, the alarm light screen 116 after the pressure reducing valve and the alarm digital display panel 120 are electrically connected to the same communicator 117, the communicator 117 is electrically connected to a switch 118, and the switch 118 is electrically connected to a DCS computer 119. During the monitoring process, the pre-filter pressure gauge 109 on the filter pressure reducing valve 108 displays the pressure required and the pressure value of the first remote pressure transmitter 111 The pressure of the pressure gauge 110 after filtration must be consistent with the value of the pressure gauge 110 after filtration. During the entire operation, the combustible gas alarm 121 will be used to detect whether there is a leak. At the same time, the consistency of the on-site and remote pressure values ​​will also provide great help for the safety and reliability of the entire circuit. The alarm value of the remote pressure switch 115 can be set to 1.5MPa. When it is lower than 1.5MPa, the pressure switch will alarm. The alarm light screen 116 after the pressure reducing valve and the alarm information communicated to the DCS computer 119 screen will remind the process operation and instrument maintenance personnel to replace the gas cylinder 102.

[0025] Example 2: Reference Figure 3-5In order to facilitate the rapid replacement of the used carrier gas bottle 102, a support structure is arranged on the positioning seat 200, and a handling structure is arranged on the rotating seat 300. The support structure includes a plurality of support rods 201, the support rods 201 are fixedly installed on the bottom side of the positioning seat 200, and rollers 202 are rotatably installed on the support rods 201. A support frame 203 is movably installed on the roller 202. The positioning seat 200 is rotatably installed on the support frame 203, and four universal wheels 204 with brakes are symmetrically and movably installed on the bottom side of the support frame 203. A slide rail groove 205 is provided on the support frame 203, and the roller 202 is movably installed in the slide rail groove 205. Two positioning grooves 206 are provided on the positioning seat 200, and the carrier gas bottle 102 is movably installed in a corresponding positioning groove 206, the transport structure includes a flip seat 301, the flip seat 301 is rotatably mounted on the rotating seat 300, the rotating seat 300 is rotatably mounted on the top side of the support frame 203, two connecting rods 302 are fixedly mounted on the flip seat 301, L-shaped lifting rods 303 are rotatably mounted on the two connecting rods 302, two positioning pins 304 are movably mounted on the two L-shaped lifting rods 303, the same mounting plate 305 is fixedly mounted on the two positioning pins 304 on the same side, the two mounting plates 305 are respectively fixedly mounted on both sides of the carrier gas bottle 102, the same mounting bar 306 is fixedly mounted on the top side of the two connecting rods 302, a handle 307 is fixedly mounted on the top side of the mounting bar 306, and two positioning screws 304 are movably mounted on the mounting bar 306 08, two L-shaped lifting rods 303 are provided with positioning screw holes 309, two positioning screws 308 are respectively threadedly installed in the two positioning screw holes 309, and two mounting holes 310 are provided on the L-shaped lifting rod 303, and two positioning pins 304 are respectively movably installed in the two mounting holes 310. By setting two carrier gas bottles 102 on the positioning seat 200, the unused carrier gas bottle 102 can be used as a spare, so that the interface can be quickly connected to the spare carrier gas bottle 102, and the support frame 203 under the positioning seat 200 is provided with a universal wheel 204 with a brake, which can quickly move and fix the position of the carrier gas bottle 102 for mobile replacement. For the used carrier gas bottle 102, the used carrier gas bottle can be put into the position before the connecting pipeline is installed. 102 is adjusted to between the two L-shaped lifting rods 303, and then the two L-shaped lifting rods 303 are flipped to drive the mounting hole 310 to be sleeved on the positioning pin 304. At this time, the positioning screw 308 is rotated to limit and fix the angle of the L-shaped lifting rod 303, and then the handle 307 is pressed downward to lift the gas bottle 102 from the positioning groove 206 on the positioning seat 200, so that the gas bottle 102 is disengaged from the positioning groove 206. At this time, the handle 307 is turned to adjust the orientation of the gas bottle 102 so that it falls off from the top of the support frame 203, and then the handle 307 is slowly released, and the gas bottle 102 is slowly placed on the ground to complete the disassembly of the gas bottle 102. Conversely, the unused gas bottle 102 can be installed. The remaining features are the same as those in Example 1.

[0026] Working principle of this utility model:

[0027] The combustible gas alarm 121 is installed on the alarm bracket 122 to detect the leakage of the carrier gas circuit, and the value is displayed on the alarm digital display panel 120 of the local control cabinet 101. By installing the filter pressure reducing valve 108 on the carrier gas bottle 102 and the entire first gate valve 103 of the analytical instrument cabinet 100, the pre-filtration pressure gauge 109 on the filter pressure reducing valve 108 can be used to display the cylinder pressure, and the post-filtration pressure gauge 110 can be used to display the pressure of the inlet to the analytical instrument after being adjusted by the filter pressure reducing valve 108. The four gate valves 107, the first remote pressure transmitter 111, the second remote pressure transmitter 113 and the remote pressure switch 115 are applied to the entire analytical carrier gas loop, and can display the collected pressure data on the gas cylinder remote pressure display panel 112, the pressure display panel 114 after the pressure reducing valve and the alarm light screen 116 after the pressure reducing valve of the local control cabinet 101 through the signal line, so as to conduct real-time continuous and uninterrupted monitoring and analysis of the carrier gas usage, and upload the data to the monitoring screen of the DCS computer 119 through the communicator 117, the switch 118 and the network cable for real-time monitoring by the operator.

[0028] During the entire monitoring, the pressure displayed by the pre-filtration pressure gauge 109 on the filter pressure reducing valve 108 needs to be consistent with the pressure value of the first remote pressure transmitter 111, and the pressure of the post-filtration pressure gauge 110 needs to be consistent with the value of the post-filtration pressure gauge 110. During the entire operation, the combustible gas alarm 121 will be used to detect whether there is a leak. At the same time, the consistency of the on-site and remote pressure values ​​will also provide great help for the safety and reliability of the entire circuit. According to regulations, the carrier gas pressure entering the analysis shall not be lower than 1MPa. The alarm value of the remote pressure switch 115 can be set to 1.5MPa. When it is lower than 1.5MPa, the pressure switch will alarm, and the alarm light screen 116 after the pressure reducing valve and the alarm information communicated to the DCS computer 119 screen will remind the process operation and instrument maintenance personnel to replace the carrier gas cylinder 102.

[0029] By arranging two gas cylinders 102 on the positioning seat 200, the unused gas cylinder 102 can be used as a spare, so that the interface can be quickly connected to the spare gas cylinder 102, and the support frame 203 under the positioning seat 200 is provided with a universal wheel 204 with a brake, which can quickly move and fix the position of the gas cylinder 102 for mobile replacement. For the used gas cylinder 102, before installing the connecting pipeline, the used gas cylinder 102 can be adjusted between the two L-shaped lifting rods 303, and the positioning seat 200 can be directly rotated, and the positioning seat 20 0 will drive the roller 202 to roll in the slide rail groove 205 through the support rod 201, so that the adjustment process of the gas carrier bottle 102 is smoother. By rotating the positioning seat 200, the gas carrier bottle 102 can be driven to move in a circle, and the used gas carrier bottle 102 can be adjusted between the two L-shaped lifting rods 303, and then the pipeline can be connected to the unused gas carrier bottle 102. For the used gas carrier bottle 102, the two L-shaped lifting rods 303 can be turned over, and the L-shaped lifting rods 303 will rotate on the corresponding connecting rods 302, thereby achieving the effect of turning over. The L-shaped lifting rods 303 that are continuously turned over can be turned over. The rod 303 will drive the mounting hole 310 to be sleeved on the positioning pin 304. At this time, the positioning screw 308 is rotated to screw it into the positioning screw hole 309 on the L-shaped lifting rod 303 to limit and fix the angle of the L-shaped lifting rod 303 to prevent the L-shaped lifting rod 303 from loosening from the positioning pin 304. Then, the handle 307 is pressed downward, and the handle 307 will drive the connecting rod 302 to flip through the mounting strip 306. The connecting rod 302 will drive the flip seat 301 to flip on the rotating seat 300. During the flipping process of the connecting rod 302, the two L-shaped lifting rods 303 will be driven to flip. , so that the L-shaped lifting rod 303 can lift the gas carrier bottle 102 from the positioning groove 206 on the positioning seat 200 by cooperating with the positioning pin 304, so that the gas carrier bottle 102 is disengaged from the positioning groove 206. At this time, the handle 307 is turned to drive the rotating seat 300 to rotate on the support frame 203 to adjust the orientation of the gas carrier bottle 102 so that it falls off from the top of the support frame 203. Then, the handle 307 is slowly released and the gas carrier bottle 102 is slowly placed on the ground. The disassembly of the gas carrier bottle 102 can be completed. Otherwise, the unused gas carrier bottle 102 can be installed.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An analytical instrument carrier gas operation safety monitoring system, comprising an analytical instrument cabinet (100), an on-site control cabinet (101) and a carrier gas bottle (102), characterized in that: The carrier gas bottle (102) is connected to a first gate valve (103), a flow pipeline (104) is connected between the first gate valve (103) and the analytical instrument cabinet (100), a monitoring structure is connected to the flow pipeline (104), a positioning seat (200) is movably mounted on the carrier gas bottle (102), a supporting structure is mounted on the positioning seat (200), a rotating seat (300) is mounted on the supporting structure, and a transporting structure is mounted on the rotating seat (300); The monitoring structure comprises a second gate valve (105), a third gate valve (106) and a fourth gate valve (107), wherein the second gate valve (105), the third gate valve (106) and the fourth gate valve (107) are all connected to the circulation pipeline (104), the circulation pipeline (104) is connected to a filter pressure reducing valve (108), the filter pressure reducing valve (108) is located between the second gate valve (105) and the third gate valve (106), and the filter pressure reducing valve (108) is connected to a pre-filtration pressure gauge ( 109) and a pressure gauge (110) after filtration, the second gate valve (105) is connected to a first remote pressure transmitter (111), the first remote pressure transmitter (111) is electrically connected to a gas cylinder remote pressure display panel (112), the third gate valve (106) is connected to a second remote pressure transmitter (113), the second remote pressure transmitter (113) is electrically connected to a pressure display panel (114) after the pressure reducing valve, and the fourth gate valve (107) is connected to a remote pressure transmitter (111). The remote pressure switch (115) is electrically connected to a pressure reducing valve rear alarm light screen (116), the gas cylinder remote pressure display panel (112), the pressure reducing valve rear pressure display panel (114) and the pressure reducing valve rear alarm light screen (116) are all electrically connected to a local control cabinet (101), the local control cabinet (101) is electrically connected to an alarm digital display panel (120), and the alarm digital display panel (120) is electrically connected to a combustible gas alarm. (121), an alarm bracket (122) is fixedly installed on the combustible gas alarm (121), the gas cylinder remote pressure display panel (112), the pressure display panel (114) behind the pressure reducing valve, the alarm light screen (116) behind the pressure reducing valve and the alarm digital display panel (120) are electrically connected to the same communicator (117), the communicator (117) is electrically connected to a switch (118), and the switch (118) is electrically connected to a DCS computer (119).

2. The analytical instrument carrier gas operation safety monitoring system according to claim 1, characterized in that: The support structure comprises a plurality of support rods (201), wherein the support rods (201) are fixedly mounted on the bottom side of the positioning seat (200), rollers (202) are rotatably mounted on the support rods (201), a support frame (203) is movably mounted on the rollers (202), the positioning seat (200) is rotatably mounted on the support frame (203), and four universal wheels (204) with brakes are symmetrically and movably mounted on the bottom side of the support frame (203).

3. The analytical instrument carrier gas operation safety monitoring system according to claim 2, characterized in that: The support frame (203) is provided with a slide rail groove (205), and the roller (202) is movably installed in the slide rail groove (205).

4. The analytical instrument carrier gas operation safety monitoring system according to claim 1, characterized in that: The positioning seat (200) is provided with two positioning grooves (206), and the carrier gas bottle (102) is movably installed in a corresponding one of the positioning grooves (206).

5. The analytical instrument carrier gas operation safety monitoring system according to claim 1, characterized in that: The transport structure comprises a flip seat (301), the flip seat (301) is rotatably mounted on a rotating seat (300), the rotating seat (300) is rotatably mounted on the top side of a support frame (203), two connecting rods (302) are fixedly mounted on the flip seat (301), both connecting rods (302) are rotatably mounted with L-shaped lifting rods (303), both L-shaped lifting rods (303) are movably mounted with two positioning pins (304), the same mounting plate (305) is fixedly mounted on the two positioning pins (304) on the same side, the two mounting plates (305) are respectively fixedly mounted on both sides of the carrier gas bottle (102), the same mounting strip (306) is fixedly mounted on the top side of the two connecting rods (302), and a handle (307) is fixedly mounted on the top side of the mounting strip (306).

6. The analytical instrument carrier gas operation safety monitoring system according to claim 5, characterized in that: Two positioning screws (308) are movably mounted on the mounting bar (306), and positioning screw holes (309) are provided on the two L-shaped lifting rods (303), and the two positioning screws (308) are respectively threadedly mounted in the two positioning screw holes (309).

7. The analytical instrument carrier gas operation safety monitoring system according to claim 5, characterized in that: The L-shaped lifting rod (303) is provided with two mounting holes (310), and two positioning pins (304) are movably mounted in the two mounting holes (310) respectively.

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