Device for sampling without destroying vacuum

Abstract

The invention provides a device for sampling without destroying vacuum, which comprises a welding head, a three-way joint, a sampling valve, a drilling assembly, a shaft sleeve and a sealing element, one end of the welding head is integrally welded with the outer wall of a heat pump unit, the other end of the welding head is connected with a first interface of the three-way joint, and the drilling assembly extends from a second interface of the three-way joint. The first connector and the second connector are coaxially arranged, the shaft sleeve is arranged outside the drilling assembly in a sleeving mode and connected with the second connector, the drilling assembly comprises a drill bit and a rotating rod which are integrally connected, the rotating rod can be installed with a drill chuck of an electric hand drill in a matched mode, and the sealing piece is detachably connected with the shaft sleeve and limits the drill bit assembly in the shaft sleeve. And a third interface of the three-way joint is connected with the sampling valve. During drilling, the sampling valve is closed, the sealing piece is detached, the drill bit is moved towards the heat pump unit through the electric hand drill to drill the heat pump unit, after drilling is completed, the sealing piece is installed, the sampling valve is opened for sampling, the device does not need to be shut down, and the vacuum degree of equipment cannot be damaged in the sampling process.

Description

technical field [0001] The invention relates to the technical field of sampling devices, in particular to a device for sampling without breaking vacuum. Background technique [0002] Absorption heat pump is a kind of equipment that uses heat energy as power, recycles low-temperature waste heat and transfers it to high-temperature heat source, so that it can be used for process heating or heating. It is an effective device for recycling low-temperature heat energy. The dual role of energy and environmental protection. [0003] According to the different heat sources required, it can be divided into one type of absorption heat pump and the second type of absorption heat pump. Among them, the first type of absorption heat pump is also called heat-increasing heat pump, which uses a small amount of high-temperature heat source (such as steam, high-temperature heat water, combustible gas combustion heat, etc.) as the driving heat source, generate a large amount of useful heat ene...

AI Technical Summary

Problems solved by technology

[0005] Since the heat pump unit operates in a vacuum negative pressure state, if there is no sampling device reserved at the position where sampling is required, at present the only option is to stop the operation of the heat pump unit and re-open the hole for sampling, which will destroy the negative pressure of the unit, and in some cases even It is necessary to release the solution inside the unit, and then open the welding valve for sampling. After sampling, it needs to be restarted. This operation method is time-consuming and laborious. In addition, during the heating season, the unit is not allowed to stop, and the sampling operation cannot be realized.

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