CN215448648U - Constant temperature and pressure gas sampler - Google Patents
Constant temperature and pressure gas sampler Download PDFInfo
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- CN215448648U CN215448648U CN202120986401.4U CN202120986401U CN215448648U CN 215448648 U CN215448648 U CN 215448648U CN 202120986401 U CN202120986401 U CN 202120986401U CN 215448648 U CN215448648 U CN 215448648U
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Abstract
The utility model relates to the technical field of gas sampling, in particular to a constant-temperature and constant-pressure gas sampler which comprises a box body, a sampling assembly, a power supply and a control system, wherein the sampling assembly comprises a sampling pipe, an air inlet pipe and an air outlet pipe, a piston is arranged in the sampling pipe, a piston rod is arranged at the top of the piston, a limiting plate is arranged at the top of the sampling pipe, the upper end of the piston rod is connected with a power execution mechanism, a sealing plate is arranged at the bottom of the sampling pipe, one end of the air inlet pipe is communicated with the sampling pipe, the other end of the air inlet pipe extends out of the box body, one end of the air outlet pipe is communicated with the sampling pipe, the other end of the air outlet pipe extends out of the box body, a heating sleeve is sleeved on the outer side of the sampling pipe, and the power execution mechanism and the heating sleeve are respectively connected with the control system. The utility model has reasonable and compact structure and convenient use, controls the heating of the heating sleeve and controls the piston to move up and down through the control system so as to ensure the constant temperature and pressure of the sample gas in the sampling pipe, ensure the constant concentration of the sampling gas and ensure the accuracy of detection.
Description
Technical Field
The utility model relates to the technical field of gas sampling, in particular to a constant-temperature and constant-pressure gas sampler.
Background
Currently, in the gas sampling process, a bladder (similar to a balloon) is mostly used for sampling, and after sampling, due to changes of temperature and pressure, some kinds of gas can change (from gas state to liquid state) in the bladder, for example: after organic vapor such as methanol and the like is collected into the sampling container from the containing container, the vapor state is changed into the liquid state, so that the gas analysis result has larger error and the analysis data is inaccurate, and further great potential safety hazards are brought to safe production and device operation. Therefore, a constant-temperature and constant-pressure gas sampling device capable of keeping the temperature and the pressure of the gas in the sampling container equal to those of the gas in the accommodating container at all times is needed, so that the component concentration of the gas is not changed in the sample collection process, and the analysis data is accurate.
Disclosure of Invention
The utility model provides a constant-temperature and constant-pressure gas sampler, which overcomes the defects of the prior art and can effectively solve the problems that the temperature and the pressure of gas in a sampling container after sampling are different from those of gas in a sampled container in the prior gas sampling device, and the temperature and the pressure of the gas in the sampling container can not be ensured to be constant.
The technical scheme of the utility model is realized by the following measures: a constant temperature and pressure gas sampler comprises a box body, a sampling assembly, a power supply and a control system, wherein the power supply and the sampling assembly are arranged in the box body, the sampling assembly comprises a sampling tube, an air inlet tube and an air outlet tube, a piston is arranged in the sampling tube in a sliding and sealing manner, a piston rod is fixedly arranged at the top of the piston, a limiting plate is arranged at the top of the sampling tube, the upper end of the piston rod passes through the limiting plate and is connected with a power executing mechanism for driving the piston rod to move up and down, a sealing plate is arranged at the bottom of the sampling tube in a sealing manner, an air inlet tube communicated with the sampling tube is arranged on the wall of the sampling tube corresponding to the position between the piston and the sealing plate, one end of the air inlet tube, which extends out of the box body, of the air outlet tube is fixedly arranged on the sealing plate and is communicated with the inside of the sampling tube, the other end of the air inlet tube extends out of the box body, a heating sleeve is sleeved outside the sampling tube, and the power executing mechanism and the heating sleeve are respectively connected with the control system, the power executing mechanism, the heating jacket and the control system are respectively connected with a power supply.
The following are further optimization or/and improvement of the technical scheme of the utility model:
the power executing mechanism can comprise a stepping motor fixedly arranged in the box body, a gear fixedly arranged on an output shaft of the stepping motor and a rack vertically arranged at the upper end of the piston rod and meshed with the gear.
Above-mentioned control system can include temperature sensor, pressure sensor, temperature acquisition module, pressure acquisition module, text display, central processing unit, temperature detect switch and step motor controller, inside temperature sensor and the equal fixed mounting of pressure sensor were located the sampling pipe on the shrouding, temperature sensor was connected with temperature acquisition module electricity, and pressure sensor is connected with pressure acquisition module electricity, and the heating jacket is connected with temperature detect switch electricity, and step motor is connected with step motor controller electricity, and temperature acquisition module, pressure acquisition module, text display, temperature detect switch and step motor controller all are connected with central processing unit electricity.
The heating jacket can comprise a sleeve, wherein a heating wire which is spirally ascended and is embedded in the wall of the sleeve is arranged on the wall of the sleeve, and the heating wire is electrically connected with the temperature control switch.
The power supply can comprise a power switch, a storage battery and a power adapter, wherein the power switch is connected with the power adapter, and the storage battery is connected with the power adapter so as to charge the power adapter through the power adapter.
The outer side wall of the box body can be provided with a control panel, and the text display and the power switch are fixedly arranged on the control panel.
The lifting handle can be fixedly arranged on the top wall of the box body.
The utility model has reasonable and compact structure and convenient use, monitors the temperature and the pressure of the gas in the sampling pipe in real time by arranging the temperature sensor and the pressure sensor, and adjusts and connects the temperature and the pressure of the gas in the sampling pipe by the heating sleeve and the piston, thereby keeping the temperature and the pressure of the gas in the sampling pipe at the same values as the temperature and the pressure of the gas in a sampled container constantly, and further ensuring the accuracy of detection.
Drawings
FIG. 1 is a perspective view of a preferred embodiment of the present invention.
FIG. 2 is a schematic sectional view of the sampling tube shown in FIG. 1.
Fig. 3 is a block diagram of the control principle of the preferred embodiment of the present invention.
The codes in the figures are respectively: 1 is the box, 2 is the sampling pipe, 3 is the intake pipe, 4 is the outlet duct, 5 is the piston, 6 is the piston rod, 7 is the limiting plate, 8 is the shrouding, 9 is the heating jacket, 10 is step motor, 11 is the rack, 12 is the gear, 13 is temperature sensor, 14 is pressure sensor, 15 is the temperature acquisition module, 16 is the pressure acquisition module, 17 is text display, 18 is central processing unit, 19 is the temperature switch, 20 is the step motor controller, 21 is the power adapter, 22 is the battery, 23 is control panel, 24 is switch, 25 is the handle.
Detailed Description
The present invention is not limited by the following examples, and specific embodiments may be determined according to the technical solutions and practical situations of the present invention.
In the present invention, for convenience of description, the description of the relative positional relationship of the components is described according to the layout pattern of fig. 2 in the specification, such as: the positional relationship of front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of the drawings of the specification.
The utility model is further described with reference to the following examples and figures:
as shown in attached figures 1, 2 and 3, the constant-temperature and constant-pressure gas sampler comprises a box body 1, a sampling assembly, a power supply and a control system, wherein the power supply and the sampling assembly are both arranged in the box body 1, the sampling assembly comprises a sampling tube 2, an air inlet pipe 3 and an air outlet pipe 4, a piston 5 is arranged in the sampling tube 2 in a sliding and sealing manner, a piston rod 6 is fixedly arranged at the top of the piston 5, a limiting plate 7 is arranged at the top of the sampling tube 2, the upper end of the piston rod 6 penetrates through the limiting plate 7 and is connected with a power executing mechanism for driving the piston rod 6 to move up and down, a closing plate 8 is arranged at the bottom of the sampling tube 2 in a sealing manner, the air inlet pipe 3 communicated with the inside of the sampling tube 2 is arranged on the wall of the sampling tube 2 corresponding to the position between the piston 5 and the closing plate 8, the other end of the air inlet pipe 3 extends out of the box body 1, one end of the air outlet pipe 4 is fixedly arranged on the closing plate 8 and is communicated with the inside of the sampling tube 2, the other end of the sampling tube extends out of the box body 1, a heating sleeve 9 is sleeved on the outer side of the sampling tube 2, the power execution mechanism and the heating sleeve 9 are respectively and electrically connected with a control system, and the power execution mechanism, the heating sleeve 9 and the control system are respectively and electrically connected with a power supply. During the use, stretch out one of box 1 at intake pipe 3 and outlet duct 4 and install a hose respectively on one, the other end of the hose on the intake pipe 3 with by the sampling container intercommunication, sample gas flows into sampling pipe 2 through the hose, treat that sample gas finishes the air replacement in sampling pipe 2, use the clip to press from both sides two hoses tight, the heating through control system control heating jacket 9 and the removal of control piston 5, and then make the sample gas in sampling pipe 2 with by the gas temperature in the sampling container, pressure is the same and keep invariable. The utility model has reasonable and compact structure and convenient use, controls the heating of the heating sleeve 9 and controls the piston 5 to move up and down through the control system so as to ensure that the temperature and the pressure of the sample gas in the sampling tube 2 are constant, ensure that the concentration of the sampling gas is unchanged and further ensure the accuracy of detection.
The constant-temperature and constant-pressure gas sampler can be further optimized or/and improved according to actual needs:
as shown in fig. 1, the power actuator includes a stepping motor 10 fixedly installed inside the casing 1, a gear 12 fixedly installed on an output shaft of the stepping motor 10, and a rack 11 vertically installed on an upper end of the piston rod 6 and engaged with the gear 12. During the use, the motor drives gear 12 and rotates, and gear 12 drives rack 11 and removes, and then drives piston rod 6 and piston 5 and remove, compresses or expands the sample gas in sampling pipe 2 to this pressure of adjusting sample gas in sampling pipe 2. If necessary, a gear 12 and a rack 11 with a smaller module can be selected to accurately control the moving distance of the piston 5, so that the pressure adjustment is more accurate.
As shown in fig. 3, the control system includes a temperature sensor 13, a pressure sensor 14, a temperature acquisition module 15, a pressure acquisition module 16, a text display 17, a central processing unit 18, a temperature control switch 19 and a stepping motor controller 20, wherein the temperature sensor 13 and the pressure sensor 14 are both fixedly mounted on the sealing plate 8 and located inside the sampling tube 2, the temperature sensor 13 is electrically connected with the temperature acquisition module 15, the pressure sensor 14 is electrically connected with the pressure acquisition module 16, the heating sleeve 9 is electrically connected with the temperature control switch 19, the stepping motor 10 is electrically connected with the stepping motor controller 20, and the temperature acquisition module 15, the pressure acquisition module 16, the text display 17, the temperature control switch 19 and the stepping motor controller 20 are all electrically connected with the central processing unit 18. The temperature sensor 13 is of PT100 type as required; the pressure sensor 14 adopts a MIK-P300 type of the Mike; the temperature acquisition module 15 adopts grinded ADAM-4000 type; the pressure acquisition module 16 adopts a positive WM6310 type; the text display 17 is Siemens model S7-200TD 400C; the central processor 18 uses PLC, and is S7-1214C type of Siemens; the temperature control switch 19 adopts the KSD301 series of the Asahi journey; the stepper motor controller 20 is model FDV225S, flying beauty. When the sampling device is used, the pressure and the temperature of gas in a sampled container are recorded in the sampling process and are input into the central processing unit 18 through the text display 17 to serve as preset values, the gas inlet pipe 3 and the gas outlet pipe 4 are clamped by the clamp after sampling is finished, the temperature and the pressure of the sample gas in the sampling pipe 2 are monitored in real time through the temperature sensor 13 and the pressure sensor 14, monitoring data are transmitted into the central processing unit 18 through the temperature acquisition module 15 and the pressure acquisition module 16, when the temperature becomes low, the central processing unit 18 controls the temperature control switch 19 to be opened, the heating sleeve 9 further heats the sampling pipe 2, when the pressure becomes low, the central processing unit 18 controls the stepping motor controller 20 to further control the stepping motor 10 to rotate, the piston 5 is moved to compress the sample gas in the sampling pipe 2, and the temperature and the pressure of the sample gas in the sampling pipe 2 are always kept to be equal to the temperature and the pressure of the gas in the sampled container through the control, The pressure is the same value.
According to the requirement, the heating jacket 9 comprises a sleeve, a heating wire which is spirally raised and is embedded in the wall of the sleeve is arranged on the wall of the sleeve, and the heating wire is electrically connected with the temperature control switch 19. By using the heating sleeve 9, the sampling tube 2 can be uniformly heated, and the influence of the local over-high temperature of the sampling tube 2 on the sample gas is avoided.
As shown in fig. 1, the power supply includes a power switch 24, a storage battery 22 and a power adapter 21, the power switch 24 is connected to the power adapter 21, and the storage battery 22 is connected to the power adapter 21 to be charged by the power adapter 21. Charging the battery 22 with a voltage of 220V is facilitated by using the power adapter 21.
As shown in the attached figure 1, a control panel 23 is arranged on the outer side wall of the box body 1, and the text display 17 and the power switch 24 are fixedly arranged on the control panel 23. By providing the control panel 23 on the outer side wall and fixing both the text display 17 and the power switch 24 to the control panel 23, the operation is facilitated.
As shown in fig. 1, a handle 25 is fixedly mounted on the top wall of the box body 1. By arranging the handle 25 on the top wall of the box body 1, the device is convenient for operators to carry.
The above technical features constitute the best embodiment of the present invention, which has strong adaptability and best implementation effect, and unnecessary technical features can be increased or decreased according to actual needs to meet the requirements of different situations.
Claims (8)
1. A constant temperature and pressure gas sampler is characterized by comprising a box body, a sampling assembly, a power supply and a control system, wherein the power supply and the sampling assembly are arranged in the box body, the sampling assembly comprises a sampling tube, an air inlet tube and an air outlet tube, a piston is arranged in the sampling tube in a sliding and sealing manner, a piston rod is fixedly arranged at the top of the piston, a limiting plate is arranged at the top of the sampling tube, the upper end of the piston rod passes through the limiting plate and is connected with a power executing mechanism for driving the piston rod to move up and down, a sealing plate is arranged at the bottom of the sampling tube in a sealing manner, an air inlet tube communicated with the sampling tube is arranged on the sampling tube wall corresponding to the position between the piston and the sealing plate, one end of the air inlet tube, which extends out of the box body, of the air outlet tube is fixedly arranged on the sealing plate and is communicated with the inside of the sampling tube, the other end extends out of the box body, a heating sleeve is sleeved outside the sampling tube, and the power executing mechanism and the heating sleeve are respectively connected with the control system, the power executing mechanism, the heating jacket and the control system are respectively connected with a power supply.
2. The gas sampler with constant temperature and pressure as claimed in claim 1, wherein the power actuator comprises a stepping motor fixedly installed inside the housing, a gear fixedly installed on the output shaft of the stepping motor, and a rack vertically installed on the upper end of the piston rod and engaged with the gear.
3. The gas sampler with constant temperature and constant pressure as claimed in claim 2, wherein the control system comprises a temperature sensor, a pressure sensor, a temperature collection module, a pressure collection module, a text display, a central processing unit, a temperature control switch and a stepping motor controller, the temperature sensor and the pressure sensor are both fixedly mounted on the sealing plate and located inside the sampling tube, the temperature sensor is electrically connected with the temperature collection module, the pressure sensor is electrically connected with the pressure collection module, the heating jacket is electrically connected with the temperature control switch, the stepping motor is electrically connected with the stepping motor controller, and the temperature collection module, the pressure collection module, the text display, the temperature control switch and the stepping motor controller are all electrically connected with the central processing unit.
4. The gas sampler with constant temperature and constant pressure as claimed in claim 3, wherein the heating jacket comprises a sleeve, a heating wire is arranged on the wall of the sleeve and spirally rises and is embedded in the wall of the sleeve, and the heating wire is electrically connected with the temperature control switch.
5. The gas sampler according to claim 1, 2, 3 or 4, wherein said power supply comprises a power switch, a battery and a power adapter, the power switch is connected with the power adapter, and the battery is connected with the power adapter to charge the power adapter.
6. The gas sampler with constant temperature and constant pressure as claimed in claim 5, wherein the outer side wall of the box body is provided with a control panel, and the text display and the power switch are fixedly arranged on the control panel.
7. The gas sampler with constant temperature and pressure as claimed in claim 1, 2, 3, 4 or 6, wherein the top wall of the box body is fixedly provided with a handle.
8. The gas sampler with constant temperature and constant pressure as claimed in claim 5, wherein a handle is fixedly installed on the top wall of the box body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120986401.4U CN215448648U (en) | 2021-05-10 | 2021-05-10 | Constant temperature and pressure gas sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120986401.4U CN215448648U (en) | 2021-05-10 | 2021-05-10 | Constant temperature and pressure gas sampler |
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| Publication Number | Publication Date |
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| CN215448648U true CN215448648U (en) | 2022-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120986401.4U Active CN215448648U (en) | 2021-05-10 | 2021-05-10 | Constant temperature and pressure gas sampler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114405559A (en) * | 2022-01-19 | 2022-04-29 | 云图启迪(南京)科技有限公司 | Constant-pressure temperature changing device and method applied to gas monitoring |
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2021
- 2021-05-10 CN CN202120986401.4U patent/CN215448648U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114405559A (en) * | 2022-01-19 | 2022-04-29 | 云图启迪(南京)科技有限公司 | Constant-pressure temperature changing device and method applied to gas monitoring |
| CN114405559B (en) * | 2022-01-19 | 2023-07-18 | 云图启迪(南京)科技有限公司 | Constant-pressure temperature changing device and method applied to gas monitoring |
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