Equipment for analyzing and detecting purity of heptafluoropropane fire extinguishing agent

Abstract

The utility model relates to the technical field of purity analysis and detection equipment, and discloses heptafluoropropane fire extinguishing agent purity analysis and detection equipment which comprises a gas chromatograph, a hydrogen generator, an air generator and a nitrogen steel cylinder, a sample injection port is formed in the left side of the upper end of the gas chromatograph, a sample injection control structure is arranged at the upper end of the sample injection port, and a sample injection control structure is arranged at the lower end of the nitrogen steel cylinder. The sample injection control structure comprises a top frame; the servo electric push rod is installed in the upper end of the top frame and fixedly connected with the top frame, a pressing disc is installed at the lower end of the servo electric push rod and fixedly connected with the servo electric push rod, first sliding rings are fixedly installed on the left side and the right side of the exterior of the pressing disc through fixing rods, and the first sliding rings are slidably connected with the top frame. According to the utility model, by adopting the servo electric push rod and the frame body structure, the frame body fixes the sample injector and is matched with the servo electric push rod to control the piston rod to descend, so that the sample injection amount and speed are controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of purity analysis and detection equipment, in particular to a purity analysis and detection equipment for heptafluoropropane fire extinguishing agent. Background Art

[0002] Heptafluoropropane (HFC-227ea / FM200) is a clean gas fire extinguishing agent that primarily extinguishes fires chemically, with some physical extinguishing properties. It is colorless, odorless, low in toxicity, non-conductive, and does not contaminate the protected object, nor does it damage property or precision equipment. In actual firefighting, HFC-227ea achieves its extinguishing effect through a combination of physical and chemical reactions, with the chemical reaction being the primary method. The purity of HFC-227ea fire extinguishing agent is primarily analyzed and tested using a gas chromatograph, a commonly used chemical analysis instrument that uses gas as the mobile phase (carrier gas) and employs column chromatography with a flushing method. When testing the purity of HFC-227ea, gas chromatographs typically employ specific detectors, such as a thermal conductivity detector (TCD) or electron capture detector (ECD). These detectors are highly sensitive and selective for HFC-227ea and can accurately measure the HFC-227ea content in a sample.

[0003] During the purity analysis process, specific injection techniques and conditions, such as injection volume and injection speed, are also used to ensure that the heptafluoropropane sample can smoothly enter the chromatographic column and be accurately separated and detected. The common method is to manually press the injector. However, it is difficult to manually control the injection volume and injection speed. Therefore, a heptafluoropropane fire extinguishing agent purity analysis and detection equipment is proposed. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the shortcomings of the existing technology, the present invention provides a purity analysis and detection device for heptafluoropropane fire extinguishing agent to solve the problem that the purity analysis and detection device proposed in the above background technology is difficult to control the injection volume and injection speed.

[0006] (2) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a heptafluoropropane fire extinguishing agent purity analysis and detection device, comprising:

[0008] A gas chromatograph, a hydrogen generator, an air generator and a nitrogen cylinder, wherein the left side of the upper end of the gas chromatograph is provided with an injection port, the upper end of the injection port is provided with a control injection structure, and the control injection structure includes a top frame;

[0009] A servo electric push rod is installed inside the upper end of the top frame, and the servo electric push rod is fixedly connected to the top frame. A pressure plate is installed at the lower end of the servo electric push rod, and the pressure plate is fixedly connected to the servo electric push rod. First slip rings are fixedly installed on the left and right sides of the outside of the pressure plate through fixing rods, and the first slip ring is slidably connected to the top frame.

[0010] Preferably, a fixing ring is provided inside the top frame at the lower end of the pressure plate, and an injector is sleeved inside the fixing ring, and the fixing ring is used to install the injector.

[0011] Preferably, a fixing plate is provided outside the fixing ring, and the fixing plate is fixedly connected to the fixing ring.

[0012] Preferably, the fixed plate is slidably connected to the top frame, and second slip rings are installed on both sides of the upper end of the fixed plate and outside the top frame, and the second slip rings are used to control the lifting of the fixed plate.

[0013] Preferably, the second slip ring is slidably connected to the top frame, and the second slip ring is fixedly connected to the fixed plate.

[0014] Preferably, an adjusting bolt is installed on one side of the interior of the second slip ring, and the adjusting bolt is threadedly matched with the second slip ring. The adjusting bolt passes through and extends to the interior of the second slip ring. Several equally spaced limiting holes are provided on the left and right sides of the exterior of the top frame, and the adjusting bolt is adapted to the limiting holes. The adjusting bolt is combined with the limiting holes to fix the second slip ring.

[0015] (3) Beneficial effects

[0016] Compared with the existing technology, the present invention provides a heptafluoropropane fire extinguishing agent purity analysis and detection equipment, which has the following beneficial effects:

[0017] The utility model places heptafluoropropane fire extinguishing agent into the injector, inserts the injector into a fixed ring, and when it is necessary to control the injection volume and speed, controls the pressure plate to descend through a servo electric push rod, and the first slip ring plays a role in stabilizing the descent of the pressure plate. The pressure plate presses down the piston rod of the injector, and the injection speed is controlled by the stable telescopic control characteristics of the servo electric push rod. At the same time, the injection volume is controlled according to the pushing length of the servo electric push rod, thereby solving the problems raised in the background technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0019] Figure 2 This is a three-dimensional diagram of the control injection structure of the utility model;

[0020] Figure 3 For the utility model Figure 2A partial enlarged view of area A in the middle.

[0021] In the figure: 1. Gas chromatograph; 2. Inlet; 3. Hydrogen generator; 4. Air generator; 5. Nitrogen cylinder; 6. Top frame; 7. Servo electric push rod; 8. Pressure plate; 9. First slip ring; 10. Fixed plate; 11. Fixed ring; 12. Second slip ring; 13. Adjusting bolt; 14. Limit hole; 15. Injector. DETAILED DESCRIPTION

[0022] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0023] The utility model provides a technical solution, a heptafluoropropane fire extinguishing agent purity analysis and detection equipment, please refer to Figure 1 、 Figure 2 and Figure 3 ,include:

[0024] A gas chromatograph 1, a hydrogen generator 3, an air generator 4 and a nitrogen cylinder 5. A sampling port 2 is provided on the left side of the upper end of the gas chromatograph 1. A sampling control structure is provided on the upper end of the sampling port 2. The sampling control structure includes a top frame 6.

[0025] The servo electric push rod 7 is installed inside the upper end of the top frame 6, and the servo electric push rod 7 is fixedly connected to the top frame 6. A pressure plate 8 is installed at the lower end of the servo electric push rod 7, and the pressure plate 8 is fixedly connected to the servo electric push rod 7. The left and right sides of the outside of the pressure plate 8 are fixedly installed with a first slip ring 9 through a fixing rod, and the first slip ring 9 is slidably connected to the top frame 6.

[0026] During use, the sample injector 15 is inserted into the fixed ring 11. When the injection volume and speed need to be controlled, the pressure plate 8 is controlled to descend by the servo electric push rod 7. The first slip ring 9 stabilizes the descent of the pressure plate 8. The pressure plate 8 presses down the piston rod of the sample injector 15. The injection speed is controlled by the stable telescopic control characteristics of the servo electric push rod 7. At the same time, the injection volume is controlled according to the pushing length of the servo electric push rod 7. It should be noted that in order to save space and highlight the innovative elements of this patent, this solution is based on the existing gas chromatograph and improves its injection-related structures. Some conventional equipment, such as the gas chromatograph 1, hydrogen generator 3, air generator 4, nitrogen cylinder 5, servo electric push rod 7, sample injector 15, etc., will not be described in detail in this patent.

[0027] See also Figure 1 、 Figure 2 and Figure 3 A fixing ring 11 is provided at the lower end of the pressure plate 8 inside the top frame 6 , and an injector 15 is sleeved inside the fixing ring 11 , and the fixing ring 11 is used to install the injector 15 .

[0028] See also Figure 2 and Figure 3 A fixing plate 10 is provided outside the fixing ring 11 , and the fixing plate 10 is fixedly connected to the fixing ring 11 .

[0029] See also Figure 2 and Figure 3 The fixed plate 10 is slidably connected to the top frame 6 , and second slip rings 12 are installed on both sides of the upper end of the fixed plate 10 outside the top frame 6 , and the second slip rings 12 are used to control the lifting of the fixed plate 10 .

[0030] See also Figure 2 and Figure 3 The second slip ring 12 is slidably connected to the top frame 6 , and the second slip ring 12 is fixedly connected to the fixed plate 10 .

[0031] See also Figure 2 and Figure 3 An adjusting bolt 13 is installed on one side of the interior of the second slip ring 12, and the adjusting bolt 13 is threadedly matched with the second slip ring 12. The adjusting bolt 13 passes through and extends to the interior of the second slip ring 12. Several equally spaced limiting holes 14 are provided on the left and right sides of the exterior of the top frame 6, and the adjusting bolt 13 is adapted to the limiting holes 14. The combination of the adjusting bolt 13 and the limiting holes 14 fixes the second slip ring 12.

[0032] In this solution, HFC-227ea fire extinguishing agent is placed in the injector 15, and the injector 15 is inserted into the fixing ring 11. When the injection volume and speed need to be controlled, the pressure plate 8 is controlled to descend by the servo electric push rod 7. The first slip ring 9 stabilizes the descent of the pressure plate 8. The pressure plate 8 presses down the piston rod of the injector 15. The injection speed is controlled by the stable telescopic control characteristics of the servo electric push rod 7. At the same time, the injection volume is controlled according to the pushing length of the servo electric push rod 7. When replacing injectors 15 of different lengths, the adjusting bolt 13 is turned to disengage it from the limiting hole 14, and then the second slip ring 12 and the fixing ring 11 are raised or lowered to adapt to injectors 15 of different lengths.

[0033] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heptafluoropropane fire extinguishing agent purity analysis and detection equipment, characterized in that: include: A gas chromatograph (1), a hydrogen generator (3), an air generator (4) and a nitrogen cylinder (5); a sample inlet (2) is provided on the left side of the upper end of the gas chromatograph (1); a sample inlet control structure is provided on the upper end of the sample inlet (2); and the sample inlet control structure includes a top frame (6); A servo electric push rod (7) is installed inside the upper end of the top frame (6), and the servo electric push rod (7) is fixedly connected to the top frame (6). A pressure plate (8) is installed at the lower end of the servo electric push rod (7), and the pressure plate (8) is fixedly connected to the servo electric push rod (7). First slip rings (9) are fixedly installed on the left and right sides of the outside of the pressure plate (8) through fixed rods, and the first slip ring (9) is slidably connected to the top frame (6).

2. The purity analysis and detection equipment for heptafluoropropane fire extinguishing agent according to claim 1, characterized in that: A fixing ring (11) is provided inside the top frame (6) at the lower end of the pressure plate (8), and a sample injector (15) is sleeved inside the fixing ring (11).

3. The purity analysis and detection equipment for heptafluoropropane fire extinguishing agent according to claim 2, characterized in that: A fixing plate (10) is provided outside the fixing ring (11), and the fixing plate (10) is fixedly connected to the fixing ring (11).

4. The purity analysis and detection equipment for heptafluoropropane fire extinguishing agent according to claim 3, characterized in that: The fixed plate (10) is slidably connected to the top frame (6), and second slip rings (12) are installed on both sides of the upper end of the fixed plate (10) and outside the top frame (6).

5. The purity analysis and detection equipment for heptafluoropropane fire extinguishing agent according to claim 4, characterized in that: The second slip ring (12) is slidably connected to the top frame (6), and the second slip ring (12) is fixedly connected to the fixed plate (10).

6. The purity analysis and detection equipment for heptafluoropropane fire extinguishing agent according to claim 5, characterized in that: An adjusting bolt (13) is installed on one side of the interior of the second slip ring (12), and the adjusting bolt (13) and the second slip ring (12) are threadedly matched. The adjusting bolt (13) passes through and extends into the interior of the second slip ring (12). A plurality of equally spaced limiting holes (14) are provided on the left and right sides of the exterior of the top frame (6), and the adjusting bolt (13) and the limiting holes (14) are adapted to each other.

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