Sealing positioning detection device for closed protective clothing

Abstract

The utility model belongs to the technical field of sealing performance detection of protective clothing, and particularly relates to a sealing performance positioning detection device for closed protective clothing, which comprises an operating platform, a probe bracket and a protective clothing fixing bracket which are arranged on the operating platform, and a tracer gas circulating system, and the protective clothing fixing bracket is used for fixing the closed protective clothing to be detected; the tracer gas circulation system is used for inflating the protective clothing; a lifting mechanism and a positioning detection probe are installed on the probe support, and the lifting mechanism is used for driving the positioning detection probe to ascend or descend so that the sealing performance of the protective clothing at different height positions can be detected through the positioning detection probe. The lifting mechanism is used for driving the positioning detection probe to ascend or descend, so that the sealing performance of the protective clothing at different height positions is detected through the positioning detection probe, and positioning detection is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of protective clothing sealing detection, and particularly relates to a closed protective clothing sealing positioning detection device. BACKGROUND

[0002] The closed protective clothing is a protective clothing worn by professionals when working in a specific place. The clothing is made of airtight material and designed to be sealed, so that the person is completely isolated from the outside environment. For example, when a firefighter enters a chemical toxicant, chemical hazardous product or corrosive product fire or accident site, a medical staff enters a virus infection area, or an astronaut enters space, the closed protective clothing is needed to ensure the safety of the staff. Therefore, the airtightness detection of the closed protective clothing is particularly important. The existing protective clothing detection is generally artificial detection or air pressure detection. The artificial detection is difficult to find small damage of the protective clothing, and the air pressure detection is time-consuming and can only detect leakage as a whole. SUMMARY

[0003] In view of the above-mentioned defects and disadvantages in the prior art, one of the purposes of the utility model is to solve one or more of the above-mentioned problems in the prior art. In other words, one of the purposes of the utility model is to provide a closed protective clothing sealing positioning detection device which meets one or more of the above-mentioned requirements.

[0004] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts the following technical scheme:

[0005] The closed protective clothing sealing positioning detection device comprises an operation table, a probe support and a protective clothing fixing support which are installed on the operation table, and a tracer gas circulation system. The protective clothing fixing support is used for fixing the closed protective clothing to be detected, and the tracer gas circulation system is used for inflating the protective clothing. A lifting mechanism and a positioning detection probe are installed on the probe support. The lifting mechanism is used for driving the positioning detection probe to ascend or descend, so that the sealing property of the protective clothing at different heights can be detected by the positioning detection probe.

[0006] As a preferred scheme, the operation table is provided with a tracer gas inflation port and a tracer gas recovery port which are used for being connected with an air inlet valve and an air outlet valve of the protective clothing, respectively. The tracer gas inflation port and the tracer gas recovery port are connected with the tracer gas circulation system, respectively.

[0007] As a preferred scheme, the tracer gas circulation system comprises a tracer gas storage tank, a hydrogen supplement bottle and a nitrogen supplement bottle which are used for supplementing the tracer gas storage tank. The tracer gas storage tank is provided with an air inlet and an air outlet. An inflation pump is installed at the air outlet of the tracer gas storage tank. The outlet of the inflation pump is connected with the tracer gas inflation port on the operation table. The tracer gas inflation port is used for inflating the protective clothing.

[0008] The outlet end of the trace gas recovery port on the operation table is provided with a vacuum pump, and the outlet end of the vacuum pump is connected with a three-way electromagnetic valve, one way of which is used for pre-vacuumizing the protective clothing, and the other way is connected with the gas inlet of the trace gas storage tank.

[0009] As a preferred solution, the trace gas storage tank is provided with a hydrogen sensor for real-time detection of the hydrogen concentration in the trace gas storage tank.

[0010] When the hydrogen concentration in the trace gas storage tank is less than 5%, the valve on the hydrogen supplement bottle is automatically opened to supplement hydrogen into the trace gas storage tank to reach a hydrogen concentration of 5%;

[0011] When the hydrogen concentration in the trace gas storage tank is greater than 5%, the valve on the nitrogen supplement bottle is automatically opened to supplement nitrogen into the trace gas storage tank to reach a hydrogen concentration of 5%.

[0012] As a preferred solution, the gas inlet of the trace gas storage tank is provided with a filter.

[0013] As a preferred solution, the one way for pre-vacuumizing the protective clothing is provided with a tail gas treatment device.

[0014] As a preferred solution, the positioning detection probe comprises a ring-shaped frame and 6-20 leak detection sensing units arranged in an array along the inner side of the ring-shaped frame, and the leak detection sensing units are used for detecting the hydrogen concentration.

[0015] As a preferred solution, the leak detection sensing unit comprises a telescopic mechanism, an air suction pipe, a distance measuring sensor, a hydrogen measuring sensor and an audible and visual alarm, the telescopic mechanism is arranged in the ring-shaped frame and used for driving the air suction pipe to movably cooperate with the ring-shaped frame to adjust the distance between the air suction port of the air suction pipe and the protective clothing, the distance measuring sensor is arranged on the air suction pipe and used for detecting the distance between the air suction port of the air suction pipe and the protective clothing, the hydrogen measuring sensor is arranged in the air suction pipe and used for detecting the hydrogen concentration in the gas sucked into the air suction pipe, and the audible and visual alarm is arranged on the air suction pipe and located outside the ring-shaped frame, and is signal-connected with the hydrogen measuring sensor.

[0016] As a preferred solution, the distance between the air suction port of the air suction pipe and the protective clothing is 5-10mm.

[0017] As a preferred solution, the bottom of the operation table is provided with a roller with a brake.

[0018] Compared with the prior art, the present application has the following beneficial effects:

[0019] (1) The positioning detection probe is driven to ascend or descend by the lifting mechanism to detect the sealing property of the protective clothing at different height positions by the positioning detection probe, so that the positioning detection is realized.

[0020] (2) The positioning detection probe of the utility model adopts annular structure, and a plurality of leak detection sensing units are arranged in array on the annular structure, the air extraction pipe of each leak detection sensing unit is telescopic, and the air extraction pipe is automatically telescopic according to the distance from the leak detection sensor to the protective clothing, so that the air extraction pipe is always close to but not in contact with the inflatable protective clothing, the hydrogen concentration on the surface of the protective clothing is quickly and accurately measured, when the hydrogen concentration on the surface of the protective clothing measured by the hydrogen sensing sensor exceeds the preset alarm concentration, the corresponding audible and visual alarm is triggered to alarm, and the place is warned as a leakage point, so that the leakage point is quickly positioned.

[0021] (3) The trace gas circulation system of the utility model can reuse the trace gas, and resources are effectively saved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is the structure schematic view of the closed protective clothing sealing positioning detection device of the utility model embodiment 1;

[0023] Figure 2 is the gas path connection schematic view of the trace gas circulation system of the utility model embodiment 1;

[0024] Figure 3 is the internal structure schematic view of the leak detection sensing unit of the utility model embodiment 1. DETAILED DESCRIPTION

[0025] In order to more clearly illustrate the utility model embodiments, the specific implementation of the utility model will be described below with reference to the drawings. Obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings and other implementation modes can be obtained according to these drawings without creative labor.

[0026] Embodiment 1:

[0027] As shown in Figure 1 , the closed protective clothing sealing positioning detection device of the utility model embodiment comprises an operation table 1, a trace gas circulation system, a positioning detection probe 3, a probe support 4 and a central controller 5, the trace gas circulation system and the central controller 5 are installed in a cabinet below the operation table 1, and the probe support 4 is fixedly installed on the right side of the operation table 1;The positioning detection probe 3 is fixedly installed on the probe support 4, the probe support 4 is provided with a lifting cylinder 6, the positioning detection probe 3 moves up and down along the protective clothing under the action of the lifting cylinder 6, and the positioning detection probe 3, the lifting cylinder 6 and the trace gas circulation system are respectively connected with the central controller 5 in communication.

[0028] The operation table 1 is provided with a protective clothing support seat 71 and a protective clothing fixing support 72, the protective clothing support seat 71 is slightly higher than the table top of the operation table 1, the operation table 1 is provided with a tracer gas filling port 8 and a tracer gas recovery port 9 at the front side of the protective clothing support seat 71, a liquid crystal control screen 10 of the central controller 5 is installed on the operation table 1 at the right side of the protective clothing support seat 71, and the operation table 1 is provided with a roller 23 with a brake at the bottom, facilitating carrying. In addition, the protective clothing fixing support 72 is installed on the top of the probe support 4, the protective clothing is hoisted and fixed by the protective clothing fixing support 72, the bottom of the protective clothing is supported on the protective clothing support seat 71, and the fixing of the inflatable protective clothing is realized.

[0029] The tracer gas circulation system 2 of the embodiment is installed in a cabinet below the operation table 1, as shown in the figure, the tracer gas circulation system 2 comprises a tracer gas storage tank 24, a hydrogen supplement bottle 17 and a nitrogen supplement bottle 18. Figure 2 Specifically, the tracer gas storage tank 24 is provided with a storage tank gas inlet 15 and a storage tank gas outlet 25 at the top end, the storage tank gas outlet 25 is provided with an inflation pump 11, the outlet of the inflation pump 11 is connected with the tracer gas filling port 8 on the operation table 1, the tracer gas recovery port 9 on the operation table 1 is provided with a vacuum pump 12 at the gas outlet end, the gas outlet end of the vacuum pump 12 is connected with a three-way electromagnetic valve 13, one way of the three-way electromagnetic valve 13 is used for pre-vacuumizing the protective clothing, and a tail gas treatment device 14 is installed at the end of the pipeline; the other way is connected with the gas inlet 15 of the tracer gas storage tank, and a filter 16 is arranged at the gas inlet 15 of the tracer gas storage tank. In addition, the tracer gas storage tank 24 is provided with the hydrogen supplement bottle 17 and the nitrogen supplement bottle 18 at the side, a hydrogen sensor is installed at the top inside of the tracer gas storage tank 24, used for monitoring the hydrogen concentration in the storage tank in real time, when the hydrogen concentration in the storage tank 24 is less than 5%, the valve on the hydrogen supplement bottle 17 is automatically opened, hydrogen is supplemented into the storage tank 24 to reach the hydrogen concentration of 5%, when the hydrogen concentration in the storage tank 24 is greater than 5%, the valve on the nitrogen supplement bottle 18 is automatically opened, nitrogen is supplemented into the storage tank 24 to reach the hydrogen concentration of 5%.

[0030] The positioning detection probe 3 of the embodiment adopts a ring structure, comprising a ring-shaped frame and 6-20 leak detection sensing units arranged in an array along the circumferential direction of the inside of the ring-shaped frame, the leak detection sensing units are used for detecting the hydrogen concentration. Specifically, as shown in the figure, Figure 3As shown, the leak detection sensing unit of the embodiment comprises a telescopic air cylinder, an air extraction pipe 20, a distance measurement sensor 19, a hydrogen measurement sensor 21 and an audible and light alarm 22. The distance measurement sensor 19 is fixedly installed at the top end of the air extraction pipe 20 and corresponds to the air extraction port of the air extraction pipe 20. The hydrogen measurement sensor 21 is installed inside the air extraction pipe 20. The audible and light alarm 22 is installed at the rear end of the hydrogen measurement sensor 21 and outside the annular frame. The air extraction pipe 20 automatically telescopes according to the distance measurement sensor 19 detecting the distance between the air extraction pipe 20 and the protective clothing, so that the top end of the air extraction pipe always maintains a distance of 5-10 mm from the protective clothing. When the hydrogen sensor 21 detects that the hydrogen concentration on the surface of the protective clothing is higher than the preset alarm concentration, that is, the protective clothing has a leak point, the corresponding audible and light alarm 22 triggers an alarm.

[0031] The detection method of the closed protective clothing leak detection device is as follows: the air inlet valve and the air outlet valve of the protective clothing are connected with the tracer gas filling port 8 and the tracer gas recovery port 9 on the operation table 1 respectively, and the protective clothing is vertically fixed on the protective clothing fixing support 72; the central controller 5 controls the vacuum pump 12 and the three-way electromagnetic valve 13 to pre-evacuate the protective clothing; after the pre-evacuation is completed, the central controller 5 controls the vacuum pump 12 and the three-way electromagnetic valve 13 to be closed, the valve of the tracer gas filling port 8 is opened, and the protective clothing is filled with nitrogen-hydrogen mixed tracer gas with a hydrogen concentration of 5%; after the tracer gas filling is completed, the central controller 5 controls the valve of the tracer gas filling port 8 to be closed, and the leak detection sensing unit and the lifting air cylinder 6 are started, and the positioning detection probe 3 slowly scans downward under the action of the lifting air cylinder 6, when the hydrogen measurement sensor detects that the protective clothing has a leak point, the positioning detection probe 3 stops moving, and the corresponding audible and light alarm 22 triggers an alarm; after the detection is completed, the vacuum pump is started to recover the gas in the protective clothing to the tracer gas storage tank, and after the recovery is completed, the hydrogen concentration in the detection storage tank is detected whether it reaches 5%, and real-time gas concentration adjustment is performed.

[0032] The above only describes preferred embodiments and principles of the present application in detail. For ordinary skilled persons in the art, according to the idea provided by the present application, the specific implementation manner will be changed, and these changes should be regarded as the protection scope of the present application.

Claims

1. A closed protective clothing sealing positioning detection device, characterized in that, The operation table is provided with a tracer gas inflation port and a tracer gas recovery port, which are respectively connected with an air inlet valve and an air outlet valve of the protective clothing.

2. The position detecting apparatus according to claim 1, characterized by The tracer gas circulation system comprises a tracer gas storage tank, a hydrogen supplement bottle and a nitrogen supplement bottle for supplementing the tracer gas storage tank, the tracer gas storage tank is provided with an air inlet and an air outlet, an inflation pump is installed at the air outlet of the tracer gas storage tank, the outlet of the inflation pump is connected with the tracer gas inflation port on the operation table, and the tracer gas inflation port is used for inflating the protective clothing.

3. The position detecting apparatus according to claim 2, characterized by A vacuum pump is installed at the air outlet of the tracer gas recovery port on the operation table, the air outlet of the vacuum pump is connected with a three-way electromagnetic valve, one way of the three-way electromagnetic valve is used for pre-vacuumizing the protective clothing, and the other way is connected with the air inlet of the tracer gas storage tank. A hydrogen sensor is arranged in the tracer gas storage tank, which is used for detecting the hydrogen concentration in the tracer gas storage tank in real time.

4. The position detecting apparatus according to claim 3, characterized by When the hydrogen concentration in the tracer gas storage tank is less than 5%, the valve on the hydrogen supplement bottle is automatically opened to supplement hydrogen into the tracer gas storage tank to reach a hydrogen concentration of 5%. When the hydrogen concentration in the tracer gas storage tank is greater than 5%, the valve on the nitrogen supplement bottle is automatically opened to supplement nitrogen into the tracer gas storage tank to reach a hydrogen concentration of 5%. A filter is arranged at the air inlet of the tracer gas storage tank.

5. The position detecting apparatus according to claim 3, wherein The way for pre-vacuumizing the protective clothing is provided with a tail gas treatment device.

6. The position detecting apparatus according to claim 3, wherein The positioning detection probe comprises a ring-shaped frame and 6-20 leak detection sensing units arranged in the inside of the ring-shaped frame and distributed in an array along the circumference of the ring-shaped frame, and the leak detection sensing units are used for detecting the hydrogen concentration.

7. The position detection device according to any one of claims 3 to 6, characterized by The leak detection sensing unit comprises a telescopic mechanism, an air suction pipe, a distance measuring sensor, a hydrogen measuring sensor and an audible and visual alarm, the telescopic mechanism is arranged in the ring-shaped frame and used for driving the air suction pipe to movably cooperate with the ring-shaped frame to adjust the distance between the air suction port of the air suction pipe and the protective clothing, the distance measuring sensor is arranged on the air suction pipe and used for detecting the distance between the air suction port of the air suction pipe and the protective clothing, the hydrogen measuring sensor is arranged in the air suction pipe and used for detecting the hydrogen concentration in the gas sucked into the air suction pipe, and the audible and visual alarm is arranged on the air suction pipe and located outside the ring-shaped frame and connected with the hydrogen measuring sensor.

8. The position detecting apparatus according to claim 7, wherein The distance between the air suction port of the air suction pipe and the protective clothing is 5-10 mm.

9. The position detecting apparatus according to claim 8, wherein ​

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