Gas weighing device
Technical Field
The utility model belongs to the technical field of the gas flow detects, concretely relates to gaseous weighing device.
Background
The weighing method is a classical method for preparing international and domestic standard gas. In the past, a precision mechanical balance is generally used as a standard gas preparation tool, and a set of relatively mature methods are provided for uncertainty assessment and calculation of weighing processes of the balance. In recent years, with the development of electronic balance technology, more and more standard gases are formulated by using precision electronic balances. Due to the difference of the device principle and the weighing program, the original uncertainty evaluation method is not completely suitable for the weighing process of the electronic balance, and a new evaluation method must be researched to adapt to the requirements of new technology application.
Utility model patent CN202590648U provides a deuterium nitrogen mist's on-spot filling equipment, its characterized in that: the valve end of the deuterium gas storage device and the valve end of the deuterium-nitrogen mixed gas storage device are respectively connected with a first diaphragm valve and a second diaphragm valve, the first diaphragm valve is connected with a second diaphragm valve through a pipeline, and the vacuumizing device, the gas outlet end and the nitrogen filling end are respectively connected into a pipeline between the first diaphragm valve and the second diaphragm valve through a third diaphragm valve, a fourth diaphragm valve and a fifth diaphragm valve. The utility model has the advantages that: 1. the gas mixture purchasing procedure is simplified, and the gas mixture purchasing period is shortened; 2. the purchase cost and the logistics cost of the mixed gas are reduced; 3. the on-site filling is easy to operate, and the stability of the system is ensured.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a gas weighing device.
The utility model discloses the technical problem who solves: the existing gas weighing device is composed of a gas circuit system, a pressure gauge, a vacuum machine and the like, and has the disadvantages of high cost, complex operation and difficult control of operation conditions.
The purpose of the utility model can be realized by the following technical scheme:
the utility model relates to a gas weighing device, which comprises a bottom plate, a gas cylinder fixing frame, a gas cylinder valve, an iron support, a universal clamp, a gas connecting pipe, a sealing cover, a Pasteur straw, a collecting bottle, a limiting slide block, a lifting platform, a pulley, a waste gas collecting pipe, a compression pump, a condenser, a valve, a gas cylinder frame, a waste gas cylinder, a supporting platform and a weight sensor, wherein the gas cylinder fixing frame is fixedly arranged on the left side surface of the bottom plate, the gas cylinder is vertically arranged in the gas cylinder fixing frame, an air nozzle at the top of the gas cylinder is connected with the gas connecting pipe, the gas cylinder valve is fixedly arranged at the connection part of the top of the gas cylinder and the gas connecting pipe, a pressure gauge is arranged on the gas cylinder valve, the iron support is arranged beside the fixing frame, the iron support clamps are used for fixing the universal clamp, the collecting bottle cooperates with sealed lid, waste gas collecting pipe and compressor pump one side fixed connection, compressor pump opposite side and condenser fixed connection, the compressor pump sets up at a supporting bench upper surface with the condenser, a supporting bench fixed mounting is on the bottom plate upper surface, the condenser passes through hose and waste gas bottle bottleneck fixed connection, condenser and waste gas bottle bottleneck junction installation valve, there is the manometer on the valve, the vertical setting of waste gas bottle is in the gas cylinder frame, the gas cylinder frame is fixed at the bottom plate upper surface.
Further, the pulley is fixedly installed on the lower surface of the lifting platform, the sliding groove is formed in the upper surface of the lifting platform, and the two limiting sliding blocks are installed on the sliding groove in the upper surface of the lifting platform in a sliding mode.
Furthermore, the top end of the collecting bottle is contacted with the bottom end of the sealing cover, and a joint at one side of the top of the sealing cover is connected with the gas connecting pipe.
Further, the tail end of the gas connecting pipe is connected with the top end of the pasteur pipette.
Further, the other side joint at the top of the sealing cover is connected with an exhaust gas collecting pipe.
Has the advantages that:
the utility model relates to a gas weighing device, which is characterized in that the flexible pipe end on the gas cylinder valve is connected with a Pasteur sucker, thereby reducing the use cost and being easy to operate in the use process; in the specific operation process, firstly preparing a solvent required by preparing a gaseous pure substance solution, inserting the bottom end of a pasteur suction pipe below the liquid level, absorbing gas by using the prepared solution, and enabling the gas which is not absorbed to enter a waste bottle, thereby saving the production cost; the pulley is arranged at the bottom end of the lifting platform in the device, so that the device is convenient to move and fix; the collecting bottle and the sealed lid junction material of covering is acid and alkali-resistant rubber among the device, and the material of two knecks at sealed lid top is acid and alkali-resistant rubber, has guaranteed the seal and the security of device in the operation process, reduces the power consumption.
Drawings
The present invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of a gas weighing apparatus of the present invention.
In the figure: 1. a base plate; 2. a gas cylinder fixing frame; 3. a gas cylinder; 4. a cylinder valve; 5. an iron stand; 6. a universal clamp; 7. a gas connecting pipe; 8. a sealing cover; 9. a pasteur straw; 10. a collection bottle; 11. a limiting slide block; 12. a lifting platform; 13. a pulley; 14. an exhaust gas collection pipe; 15. a compression pump; 16. a condenser; 17. a valve; 18. a gas cylinder holder; 19. a waste gas cylinder; 20. a support table; 21. a weight sensor.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, the utility model relates to a gas weighing device, which comprises a bottom plate 1, a gas cylinder fixing frame 2, a gas cylinder 3, a gas cylinder valve 4, an iron stand 5, a universal clamp 6, a gas connecting pipe 7, a sealing cover 8, a pasteur suction pipe 9, a collecting bottle 10, a limiting slide block 11, a lifting platform 12, a pulley 13, a waste gas collecting pipe 14, a compression pump 15, a condenser 16, a valve 17, a gas cylinder frame 18, a waste gas cylinder 19, a supporting platform 20 and a weight sensor 21, wherein the gas cylinder fixing frame 2 is fixedly installed on the left side surface of the bottom plate 1, the gas cylinder 3 is vertically arranged in the gas cylinder fixing frame 2, a gas nozzle at the top of the gas cylinder 3 is connected with the gas connecting pipe 7, the gas cylinder valve 4 is fixedly installed at the joint of the top of the gas cylinder 3 and the gas connecting pipe 7, a pressure gauge is arranged on the gas cylinder valve 4, the iron stand 5 is arranged beside the gas cylinder fixing frame, the central position of the upper surface of the base plate 1 is provided with a lifting platform 12, pulleys 13 are fixedly arranged on the lower surface of the lifting platform 12, a sliding groove is formed in the upper surface of the lifting platform 12, two limit sliders 11 are slidably mounted on the sliding groove in the upper surface of the lifting platform 12, a weight sensor 21 is arranged between the limit sliders 11, a collecting bottle 10 is arranged on the upper surface of the weight sensor 21, the collecting bottle 10 is matched with a sealing cover 8, the top end of the collecting bottle 10 is in contact with the bottom end of the sealing cover 8 during use, the material of the joint of the collecting bottle 10 and the sealing cover 8 is acid and alkali resistant rubber, two interfaces are arranged at the top of the sealing cover 8, the material of the two interfaces at the top of the sealing cover 8 is acid and alkali resistant rubber, a connector at one side of the top of the sealing cover 8 is connected with a gas connecting pipe 7, the, the other side of the compression pump 15 is fixedly connected with the condenser 16, the compression pump 15 and the condenser 16 are arranged on the upper surface of the support table 20, the support table 20 is fixedly installed on the upper surface of the bottom plate 1, the condenser 16 is fixedly connected with the opening of the waste gas bottle 19 through a hose, a valve 17 is installed at the joint of the condenser 16 and the opening of the waste gas bottle 19, a pressure gauge is arranged on the valve 17, the waste gas bottle 19 is vertically arranged in a gas bottle frame 18, and the gas bottle frame 18 is fixed on the upper surface of the bottom plate.
The utility model relates to a gas weighing device, working process and principle as follows:
the first step, prepare the required solvent of gaseous state pure material solution earlier, the collecting bottle 10 of packing into of the solvent that will dispose, place collecting bottle 10 on elevating platform 12 upper surface, remove elevating platform 12 horizontal position and adjust the height of elevating platform 12 upper surface, adjust position and height after, lid sealed lid 8, insert the interface on the sealed lid 8 with gas connecting pipe 7 and waste gas collecting pipe 14 respectively, the end of gas connecting pipe 7 is connected with pasteur straw 9 top, adjust the length that gas connecting pipe 7 inserts, make pasteur straw 9 end dip below the solvent liquid level, the material of two knecks at sealed lid 8 top is acid and alkali-resistant rubber, the material of collecting bottle 10 and sealed lid 8 junction also is acid and alkali-resistant rubber, the seal of this part of device has been guaranteed.
And secondly, after the collecting bottle 10 and the sealing cover 8 are placed, clearing the numerical value of the weight sensor 21, slowly opening the gas cylinder valve 4, observing a pressure gauge on the gas cylinder valve 4 to ensure that the gas flow rate is slow, allowing the gas to enter a prepared solvent through the gas connecting pipe 7 and the Pasteur straw 9, allowing the gas which is not absorbed by the solvent to enter the compression pump 15 and the condenser 16 through the waste gas collecting pipe 14, and allowing the gas which is not absorbed by the solvent to enter the waste gas cylinder 19 after compression and condensation.
And thirdly, when the value of the weight sensor 21 reaches the target value range, closing the gas cylinder valve 4, closing the valve 17, opening the sealing cover 8 on the collecting bottle 10, adjusting the position and the height of the lifting platform 12, taking down and covering the collecting bottle 10, and ensuring that the gas cylinder 3 and the waste gas cylinder 19 are in a vertical state in the using process.
The foregoing is merely exemplary and illustrative of the structure of the invention, and various modifications, additions and substitutions as described in the detailed description may be made by those skilled in the art without departing from the structure or exceeding the scope of the invention as defined in the claims.