Sampling cabinet for sampling special liquid

Abstract

The utility model relates to the technical field of sampling equipment, in particular to a sampling cabinet for sampling special liquid, which comprises a sampling inlet isolating valve, a sampling inlet pressure sensor, a sampling pneumatic valve, a freezing and collecting unit and a purging and vacuumizing unit, the sampling inlet pressure sensor is arranged in a pipeline close to the sampling inlet isolating valve, the sampling inlet pressure sensor is electrically connected with the microprocessor, the sampling pneumatic valve is electrically connected with the microprocessor, the front end of the sampling pneumatic valve is connected with the sampling inlet isolating valve through a pipeline, and the sampling inlet isolating valve is electrically connected with the microprocessor. A sampling pneumatic valve is arranged in the cabinet body, the rear end of the sampling pneumatic valve is connected with a sampling tank inlet manual valve and a sampling tank inlet needle valve through pipelines, the sampling tank inlet manual valve and the sampling tank inlet needle valve are connected with the sampling tank through pipelines, the freezing collection unit is arranged in the cabinet body, and the purging vacuumizing unit is arranged in the cabinet body.

Description

Technical Field

[0001] The utility model relates to the technical field of sampling equipment, in particular to a sampling cabinet used for sampling special liquids. Background Art

[0002] Common processes in the semiconductor and photovoltaic industries require the use of numerous specialized liquids, placing high demands on sampling equipment, necessitating highly precise equipment. Furthermore, some toxic, corrosive, and flammable liquids are highly hazardous. Leakage caused by valve damage in these liquid supply systems (due to corrosion or human error) can threaten personnel safety, equipment damage, and even production disruptions. Utility Model Content

[0003] The purpose of the utility model is to provide a sampling cabinet for sampling special liquids, which solves the problem that during the sampling process of special liquids, due to the high hazards of some toxic, corrosive and flammable liquids, once the valves in these liquid supply systems are properly damaged (such as due to corrosion or human operating errors), liquid leakage will threaten the safety of personnel, equipment loss and production interruption.

[0004] To achieve the above-mentioned purpose, the utility model provides a sampling cabinet for special liquid sampling, comprising a cabinet, an electric control box and a touch screen, wherein a steel cylinder and a sampling tank are arranged in the cabinet, the electric control box is fixedly mounted on the cabinet, a microprocessor is arranged in the electric control box, the touch screen is fixedly mounted on the cabinet and electrically connected to the microprocessor, and further comprises a sampling device, wherein the sampling device comprises a sampling inlet isolation valve, a sampling inlet pressure sensor, a sampling pneumatic valve, a freezing collection unit and a purge vacuum unit, the sampling inlet isolation valve is connected to the steel cylinder through a pipeline, the sampling An inlet pressure sensor is arranged in a pipeline close to the sampling inlet isolation valve, the sampling inlet pressure sensor is electrically connected to the microprocessor, the sampling pneumatic valve is electrically connected to the microprocessor, the front end of the sampling pneumatic valve is connected to the sampling inlet isolation valve through a pipeline, the rear end of the sampling pneumatic valve is connected to the sampling tank inlet manual valve and the sampling tank inlet needle valve through a pipeline, the sampling tank inlet manual valve and the sampling tank inlet needle valve are connected to the sampling tank through a pipeline, the freezing collection unit is arranged in the cabinet, and the purging and vacuuming unit is arranged in the cabinet.

[0005] In which, the freezing collection unit includes a main line collection pneumatic valve, a sampling collection pneumatic valve, a freezing collection one-way valve and a freezing collection ball valve. The main line collection pneumatic valve is connected to the rear end pipeline of the sampling inlet isolation valve through a pipeline, and the main line collection pneumatic valve is electrically connected to the microprocessor; the sampling collection pneumatic valve is connected to the rear end pipeline of the sampling pneumatic valve through a pipeline, and the sampling collection pneumatic valve is electrically connected to the microprocessor; the freezing collection one-way valve and the freezing collection ball valve are connected to the rear end pipeline of the sampling collection pneumatic valve in sequence through pipelines, and the main line collection pneumatic valve and the freezing collection ball valve are both connected to the freezing collection tank through pipelines.

[0006] Wherein, the purge vacuum unit includes a nitrogen inlet one-way valve, a nitrogen isolation valve and a vacuum pneumatic valve, the front end of the nitrogen inlet one-way valve is connected to the external nitrogen pipeline through a pipeline; the front end of the nitrogen isolation valve is connected to the rear end of the nitrogen inlet one-way valve through a pipeline, and the rear end of the nitrogen isolation valve is connected to the rear end pipeline of the sampling inlet isolation valve through a pipeline; the front end of the vacuum pneumatic valve is connected to the rear end pipeline of the sampling inlet isolation valve through a pipeline, and the rear end of the vacuum pneumatic valve is connected to the external vacuum pipeline through a pipeline, and the vacuum pneumatic valve is electrically connected to the microprocessor.

[0007] In which, the sampling device also includes an alarm unit, which includes a differential pressure switch, a temperature and smoke detector and a gas detector. The differential pressure switch, the temperature and smoke detector and the gas detector are all arranged in the cabinet, and the differential pressure switch, the temperature and smoke detector and the gas detector are all electrically connected to the microprocessor.

[0008] Wherein, the alarm unit further includes a flame detector, a temperature sensor and a smoke sensor. The flame detector, the temperature sensor and the smoke sensor are all arranged in the cabinet and are electrically connected to the microprocessor.

[0009] The utility model discloses a sampling cabinet for sampling special liquids. When in use, the user operates the touch screen to enable the microprocessor in the electric control box to control the sampling pneumatic valve, so that the sampling pneumatic valve drives the special liquid in the cylinder to enter the sampling tank through the pipeline. At the same time, through the control of the microprocessor, the sampling and collection pneumatic valve can drive the special liquid remaining in the pipeline to enter the frozen collection tank. Moreover, through the control of the microprocessor, the vacuum pneumatic valve passes nitrogen through the pipeline. The nitrogen passes through the nitrogen inlet one-way valve and the nitrogen isolation valve in turn and is finally discharged from the pipeline, so that the nitrogen is purged through the pipeline to ensure that the pipeline is clean, thereby realizing the automation of the special liquid sampling process, avoiding direct contact between the operator and the special liquid, and thus ensuring the personal safety of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art.

[0011] Figure 1 This is a schematic diagram of the overall structure of a sampling cabinet for sampling special liquids according to the first embodiment of the present utility model.

[0012] Figure 2 It is a schematic diagram of the connection between the cabinet and the cylinder in the first embodiment of the present utility model.

[0013] Figure 3 This is a schematic diagram of the pipeline connection of the first embodiment of the present utility model.

[0014] Figure 4 This is a logic control diagram of the first embodiment of the present utility model.

[0015] Figure 5 This is a schematic diagram of the overall structure of a sampling cabinet for sampling special liquids according to the second embodiment of the present utility model.

[0016] In the figure: 101-cabinet, 102-electrical control box, 103-touch screen, 104-steel cylinder, 105-sampling tank, 106-microprocessor, 107-sampling inlet isolation valve, 108-sampling inlet pressure sensor, 109-sampling pneumatic valve, 110-main line collection pneumatic valve, 111-sampling collection pneumatic valve, 112-frozen collection one-way valve, 113-frozen collection ball valve, 114-nitrogen inlet one-way valve, 115-nitrogen isolation valve, 116-vacuum pneumatic valve, 117-frozen collection tank, 118-sampling tank inlet manual valve, 119-sampling tank inlet needle valve, 201-differential pressure switch, 202-temperature and smoke detector, 203-gas detector, 204-flame detector, 205-temperature sensor, 206-smoke sensor. DETAILED DESCRIPTION

[0017] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0018] The first embodiment of this application is:

[0019] See also Figure 1-4 , Figure 1 This is a schematic diagram of the overall structure of a sampling cabinet for special liquid sampling according to the first embodiment of the present utility model. Figure 2 This is a schematic diagram of the connection between the cabinet and the cylinder in the first embodiment of the utility model. Figure 3This is a schematic diagram of the pipeline connection of the first embodiment of the utility model. Figure 4 This is a logic control diagram of the first embodiment of the present utility model.

[0020] The utility model provides a sampling cabinet for sampling special liquids: comprising a cabinet body 101, an electric control box 102 and a touch screen 103, and also comprising a sampling device, wherein the sampling device comprises a sampling inlet isolation valve 107, a sampling inlet pressure sensor 108, a sampling pneumatic valve 109, a freezing collection unit and a purge vacuum unit, wherein the freezing collection unit comprises a main line collection pneumatic valve 110, a sampling collection pneumatic valve 111, a freezing collection check valve 112 and a freezing collection ball valve 113, and the purge vacuum unit comprises a nitrogen inlet check valve 114. The nitrogen isolation valve 115 and the vacuum pneumatic valve 116 solve the problem that in the process of sampling special liquids, some toxic, corrosive and flammable liquids are very harmful. Once the valves in these liquid supply systems are properly damaged (such as due to corrosion or human operating errors, etc.), liquid leakage will occur, which will threaten the safety of personnel, equipment loss and production interruption. The above solution can be used in the scenario of automatic sampling of special liquids throughout the whole process, and can also be used to solve the problem of alarm after an accident occurs in the sampling process.

[0021] In this embodiment, through the cooperation of the sampling inlet isolation valve 107, the sampling inlet pressure sensor 108, and the sampling pneumatic valve 109, automation of the special liquid sampling process is achieved, avoiding direct contact between the operator and the special liquid, thereby ensuring the personal safety of the operator.

[0022] Among them, the sampling inlet isolation valve 107 is connected to the cylinder 104 through a pipeline, the sampling inlet pressure sensor 108 is arranged in a pipeline close to the sampling inlet isolation valve 107, the sampling inlet pressure sensor 108 is electrically connected to the microprocessor 106, the sampling pneumatic valve 109 is electrically connected to the microprocessor 106, the front end of the sampling pneumatic valve 109 is connected to the sampling inlet isolation valve 107 through a pipeline, the rear end of the sampling pneumatic valve 109 is connected to the sampling tank 105 inlet manual valve and the sampling tank 105 inlet needle valve through a pipeline, the sampling tank 105 inlet manual valve and the sampling tank 105 inlet needle valve are connected to the sampling tank 105 through a pipeline, the freezing collection unit is arranged in the cabinet 101, the purge vacuum unit is arranged in the cabinet 101, and the number of the sampling devices There are two groups, which are symmetrically arranged on both sides of the cabinet 101. The freezing collection unit can collect the residual special liquid in the pipeline, the purging and vacuuming unit can purge the pipeline to ensure the cleanliness of the pipeline, and the inlet isolation valve can prevent the special liquid in the cylinder 104 from flowing back. The sampling inlet pressure sensor 108 can test the pressure in the pipeline. When in use, the sampling pneumatic valve 109 controls the special liquid in the cylinder 104 to enter the pipeline through the control of the microprocessor 106, and enters the sampling tank 105 through the sampling inlet isolation valve 107, the sampling tank inlet manual valve 118 and the sampling tank inlet needle valve 119, thereby realizing the automation of the special liquid sampling process, avoiding direct contact between the operator and the special liquid, and thus ensuring the personal safety of the operator.

[0023] Secondly, the main line collection pneumatic valve 110 is connected to the rear end pipeline of the sampling inlet isolation valve 107 through a pipeline, and the main line collection pneumatic valve 110 is electrically connected to the microprocessor 106; the sampling collection pneumatic valve 111 is connected to the rear end pipeline of the sampling pneumatic valve 109 through a pipeline, and the sampling collection pneumatic valve 111 is electrically connected to the microprocessor 106; the freezing collection one-way valve 112 and the freezing collection ball valve 113 are sequentially connected to the rear end of the sampling collection pneumatic valve 111 through pipelines. The pipeline, the main pipeline collecting pneumatic valve 110 and the freezing collection ball valve 113 are connected to the freezing collection tank 117 through the pipeline, and the freezing collection one-way valve 112 can prevent the special liquid from flowing back from the freezing collection tank 117. When in use, the microprocessor 106 drives the main pipeline collecting pneumatic valve 110 and the sampling collection pneumatic valve 111 to drive the special liquid remaining in the pipeline into the freezing collection tank 117, thereby achieving the collection effect of the special liquid remaining in the pipeline.

[0024] Again, the front end of the nitrogen inlet one-way valve 114 is connected to the external nitrogen pipeline through a pipeline; the front end of the nitrogen isolation valve 115 is connected to the rear end of the nitrogen inlet one-way valve 114 through a pipeline, and the rear end of the nitrogen isolation valve 115 is connected to the rear end pipeline of the sampling inlet isolation valve 107 through a pipeline; the front end of the vacuum pneumatic valve 116 is connected to the rear end pipeline of the sampling inlet isolation valve 107 through a pipeline, and the rear end of the vacuum pneumatic valve 116 is connected to the external vacuum pipeline through a pipeline. At the same time, the vacuum pneumatic valve 116 is electrically connected to the microprocessor 106. The nitrogen inlet one-way valve 114 and the nitrogen isolation valve 115 can prevent the backflow of nitrogen in the pipeline and can play a role in safety isolation. When in use, the vacuum pneumatic valve 116 is driven by the microprocessor to allow nitrogen to enter the pipeline and purge the pipeline, thereby ensuring the cleanliness of the pipeline.

[0025] In this embodiment, during use, the user operates the touch screen 103 to enable the microprocessor 106 in the electrical control box 102 to control the sampling pneumatic valve 109, so that the sampling pneumatic valve 109 drives the special liquid in the cylinder 104 through the pipeline into the sampling tank 105. At the same time, through the control of the microprocessor 106, the sampling and collection pneumatic valve 111 can drive the special liquid remaining in the pipeline into the frozen collection tank 117, and through the control of the microprocessor 106, the vacuum pneumatic valve 116 passes nitrogen through the pipeline, and the nitrogen passes through the nitrogen inlet one-way valve 114 and the nitrogen isolation valve 115 in turn, and is finally discharged from the pipeline, so that the nitrogen team purges the pipeline to ensure the cleanliness of the pipeline, thereby realizing the automation of the special liquid sampling process, avoiding direct contact between the operator and the special liquid, and thus ensuring the personal safety of the operator.

[0026] The second embodiment of this application is:

[0027] See also Figure 5 ,in Figure 5 This is a schematic diagram of the overall structure of a sampling cabinet for special liquid sampling according to the second embodiment of the present utility model. On the basis of the first embodiment, the sampling cabinet for special liquid sampling according to this embodiment also includes an alarm unit, which includes a differential pressure switch 201, a temperature sensor 205, a smoke detector 202 and a gas detector 203. The alarm unit also includes a flame detector 204, a temperature sensor 205 and a smoke sensor 206.

[0028] In this embodiment, the cooperation of the temperature sensor 205, the smoke detector 202 and the gas detector 203 improves the overall fire prevention effect of the device.

[0029] Among them, the differential pressure switch 201, the temperature sensor 205 smoke detector 202 and the gas detector 203 are all arranged in the cabinet 101, and the differential pressure switch 201, the temperature sensor 205 smoke detector 202 and the gas detector 203 are all electrically connected to the microprocessor 106. The differential pressure switch 201 can measure the pressure difference between the pipelines to achieve precise control of the pipeline flow. The temperature sensor 205 smoke detector 202 can detect combustion and alarm. The gas detector 203 uses a KQ500D series detector, which can convert the gas concentration monitored on site into a current signal to realize a two-aurora alarm.

[0030] Secondly, the flame detector 204, the temperature sensor 205 and the smoke sensor 206 are all arranged in the cabinet 101 and are electrically connected to the microprocessor 106. The model of the flame detector 204 is LY-H1000UVIR2, the temperature sensor 205 is a heat-sensitive fire detector, and its model is HM-5HA-NB, and the smoke sensor 206 is a smoke sensor 206 alarm, and its model is HM-635PH-NB. The flame detector 204, the temperature sensor 205 and the smoke sensor 206 can sense the combustion of flammable gas and issue an alarm, thereby protecting against the combustion of flammable gas.

[0031] The above disclosure is merely one or more preferred embodiments of the present application and is not intended to limit the scope of the present application. A person skilled in the art will understand that all or part of the processes of the above embodiments and equivalent changes made in accordance with the claims of the present application are still within the scope of the present application.

Claims

1. A sampling cabinet for special liquid sampling, comprising a cabinet, an electrical control box, and a touch screen. The cabinet is provided with a steel cylinder and a sampling tank. The electrical control box is fixedly mounted on the cabinet. A microprocessor is provided in the electrical control box. The touch screen is fixedly mounted on the cabinet and electrically connected to the microprocessor. The invention is characterized in that: Also included is a sampling device; The sampling device includes a sampling inlet isolation valve, a sampling inlet pressure sensor, a sampling pneumatic valve, a freezing collection unit and a purging and vacuuming unit. The sampling inlet isolation valve is connected to the steel cylinder through a pipeline. The sampling inlet pressure sensor is arranged in a pipeline close to the sampling inlet isolation valve. The sampling inlet pressure sensor is electrically connected to the microprocessor. The sampling pneumatic valve is electrically connected to the microprocessor. The front end of the sampling pneumatic valve is connected to the sampling inlet isolation valve through a pipeline. The rear end of the sampling pneumatic valve is connected to the sampling tank inlet manual valve and the sampling tank inlet needle valve through a pipeline. The sampling tank inlet manual valve and the sampling tank inlet needle valve are connected to the sampling tank through a pipeline. The freezing collection unit is arranged in the cabinet, and the purging and vacuuming unit is arranged in the cabinet.

2. The sampling cabinet for special liquid sampling according to claim 1, characterized in that: The freezing collection unit includes a main line collection pneumatic valve, a sampling collection pneumatic valve, a freezing collection one-way valve and a freezing collection ball valve. The main line collection pneumatic valve is connected to the rear end pipeline of the sampling inlet isolation valve through a pipeline, and the main line collection pneumatic valve is electrically connected to the microprocessor; the sampling collection pneumatic valve is connected to the rear end pipeline of the sampling pneumatic valve through a pipeline, and the sampling collection pneumatic valve is electrically connected to the microprocessor; the freezing collection one-way valve and the freezing collection ball valve are connected to the rear end pipeline of the sampling collection pneumatic valve in sequence through pipelines, and the main line collection pneumatic valve and the freezing collection ball valve are both connected to the freezing collection tank through pipelines.

3. The sampling cabinet for special liquid sampling according to claim 1, characterized in that: The purge vacuum unit includes a nitrogen inlet one-way valve, a nitrogen isolation valve and a vacuum pneumatic valve. The front end of the nitrogen inlet one-way valve is connected to the external nitrogen pipeline through a pipeline; the front end of the nitrogen isolation valve is connected to the rear end of the nitrogen inlet one-way valve through a pipeline, and the rear end of the nitrogen isolation valve is connected to the rear end pipeline of the sampling inlet isolation valve through a pipeline; the front end of the vacuum pneumatic valve is connected to the rear end pipeline of the sampling inlet isolation valve through a pipeline, and the rear end of the vacuum pneumatic valve is connected to the external vacuum pipeline through a pipeline, and the vacuum pneumatic valve is electrically connected to the microprocessor.

4. The sampling cabinet for special liquid sampling according to claim 1, characterized in that: The sampling device also includes an alarm unit, which includes a differential pressure switch, a temperature and smoke detector, and a gas detector. The differential pressure switch, the temperature and smoke detector, and the gas detector are all arranged in the cabinet, and the differential pressure switch, the temperature and smoke detector, and the gas detector are all electrically connected to the microprocessor.

5. The sampling cabinet for special liquid sampling according to claim 4, characterized in that: The alarm unit further comprises a flame detector, a temperature sensor and a smoke sensor. The flame detector, the temperature sensor and the smoke sensor are all arranged in the cabinet and are electrically connected to the microprocessor.

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