Automatic circulation immersion system and immersion test device

Abstract

The utility model discloses an automatic circulating immersion system and an immersion test device. The automatic circulating water immersion system comprises a water immersion tank, a circulating water supply assembly, a water level monitoring assembly, a speed adjusting assembly and a controller, the circulating water supply assembly is connected with the water immersion tank to form a loop allowing water to circulate, and the water level monitoring assembly is arranged on the inner wall of the water immersion tank; the water level monitoring assembly is arranged on the circulating water supply assembly, the speed adjusting assembly is arranged on the circulating water supply assembly, and the controller is connected with the circulating water supply assembly, the water level monitoring assembly and the speed adjusting assembly and used for controlling water injection or water drainage of the circulating water supply assembly according to the water level monitoring signal and adjusting the water injection or water drainage speed according to the preset number of cycles. The soaking and draining time of the sample can be accurately controlled through the rate adjusting assembly, so that the test efficiency is remarkably improved, and the test cost is effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of water immersion test, especially to an automatic circulating water immersion system and a water immersion test device. BACKGROUND

[0002] The resistance trace heater for explosive gas environment can include a device assembled in a factory or on site (construction site), which can be a series trace heating cable, a parallel trace heating cable, a trace heating mat, and a trace heating plate assembled and / or terminated according to the manufacturer's instructions. According to the provisions of Clause 5.1.9 of GB / T 19518.1-2017 "Trace Heaters for Explosive Atmospheres - Part 1: General Requirements and Test Methods", the moisture resistance test of the complete element involves a key environmental test, i.e., the waterproof test.

[0003] Specifically, the trace heater sample containing the complete element is placed in tap water. Start injecting water flow and immerse the sample completely in water. At this time, stop water injection and power on the trace heater, and then the device starts to drain water. The total time from the start of water injection to the complete emptying of the water flow should not exceed 4.5 minutes, but not less than 2.5 minutes. The trace heater should continue to be powered on for 30 seconds after the water flow is emptied. Then stop the power supply of the trace heater and start the water injection of the next cycle. The test should last for 24 hours. After the completion of the entire test, the dielectric strength test should be carried out according to the requirements. For MI trace heating cable, if the rated voltage exceeds 30V, the test voltage is reduced to (2U+500)V; if the rated voltage exceeds 60V, the test voltage is reduced to

[0004] According to the Chinese patent with the authorized publication number CN211826317U, a moisture resistance test device for resistance trace heaters is disclosed. With the update and upgrade of the current regulations and standards, the existing technology has some deficiencies. Specifically, in terms of time control, there are some limitations, and it is difficult to effectively control the rate, which makes it difficult to accurately control the immersion and drainage time of the sample during the test process. Due to the inability to accurately control these key time parameters, the utilization efficiency of water resources is often low, and it is difficult to achieve the optimal state. In addition, water resources cannot be automatically recycled, which not only increases resource waste, but also requires manual operation during the testing process, which not only reduces work efficiency, but also may introduce human operation errors, affecting the accuracy of the test results. Therefore, there is an urgent need for an innovative moisture resistance test automatic circulating water immersion system to accurately control the immersion and drainage time of the sample and ensure that the trace heater product can complete multiple water immersion cycle tests within a specified period. UTILITY MODEL CONTENTS

[0005] The main purpose of the utility model is to provide an automatic circulating water immersion system and a water immersion test device to overcome the deficiencies in the prior art.

[0006] To achieve the aforementioned utility model purposes, the utility model adopts the technical scheme including the following:

[0007] The first aspect of the utility model provides a kind of automatic circulation water immersion system, including water immersion tank, circulating water supply component, water level monitoring component, rate regulating component, controller.The circulating water supply component is connected with the water immersion tank and forms the loop that water circulation flows through, the water level monitoring component is arranged in the inner wall of the water immersion tank, and the rate regulating component is arranged on the circulating water supply component.The controller is connected with the circulating water supply component, water level monitoring component, rate regulating component respectively, for according to water level monitoring signal, control the circulating water supply component water injection or drainage, and according to preset cycle number, adjust water injection or drainage rate.Specifically, the water immersion tank as main bearing platform, can but not limited to use stainless steel sink.The controller can but not limited to programmable logic controller.

[0008] In some more specific embodiments, the circulating water supply device at least includes a water storage tank, a water injection pipe and a water outlet pipe connected with the water storage tank, and the water injection pipe, the water immersion tank, the water outlet pipe and the water storage tank are connected to form a loop for water circulation flow.

[0009] Preferably, the circulating water supply component further includes a conveying unit and a pipe switch, the conveying unit is connected with the water injection pipe and the water outlet pipe for pumping water to the water injection pipe and the water outlet pipe, and the pipe switch is arranged on the water injection pipe and the water outlet pipe for controlling water flow or blockage.

[0010] Preferably, the conveying unit includes a first water pump and a second water pump, the first water pump is connected with the water injection pipe, the second water pump is connected with the water outlet pipe, and the controller is connected with the first water pump, the second water pump and the pipe switch respectively for controlling water injection or drainage.

[0011] In some more specific embodiments, the water level monitoring component includes a first limit stop and a second limit stop, the first limit stop is used to collect and send a first water level signal to the controller, and the second limit stop is used to collect and send a second water level signal to the controller.Specifically, the first water level signal corresponds to a first water level height, and the second water level signal corresponds to a second water level height.The first water level height is higher than the second water level height.

[0012] Specifically, the first limit stop can be a high limit sensor, and the second limit stop can be a low limit sensor.The controller receives the first water level signal, controls the second water pump and the pipe switch to open for drainage.The controller receives the second water level signal, controls the first water pump and the pipe switch to open for water injection.

[0013] In some more specific embodiments, the rate adjusting assembly comprises a flow meter, a timer, a numerical display, the flow meter, the timer, the numerical display are connected with the controller, the circulating water supply assembly respectively, the flow meter is arranged at the water inlet of the circulating water supply assembly and is used for measuring the water flow, the timer is used for measuring the water flow time, the controller is used for calculating the water flow rate according to the water flow and the water flow time and displaying on the numerical display, and the controller is also used for adjusting the circulating water supply assembly according to the water flow rate.

[0014] The second aspect of the utility model provides a kind of immersion test device, including sample, power supply and automatic circulation immersion system, the sample is set in the immersion tank and is connected power supply, power switch is arranged on the power supply and is connected with the controller. Specifically, the immersion tank is used to place sample. Preferably, the sample is resistance type heat tracing. The resistance type heat tracing can be understood as a kind of heat generation with resistance heating as principle, usually including one or more conductive wire or conductive material with appropriate insulation and protection.

[0015] Compared with prior art, the utility model has at least the advantages of:

[0016] The application discloses an immersion test device, and a water level monitoring assembly is used for detecting a water level.When the water level reaches a first water level height, a controller controls a second water pump to drain water, and when the water level reaches a second water level height, the controller controls a first water pump to inject water, so that automatic circulation water supply can be realized.The whole device is simple to operate and easy to maintain.The controller is also used for controlling the rate adjusting assembly to adjust the water injection or drainage rate, so that the immersion and drainage time of the sample can be accurately controlled, the efficiency of the test is significantly improved, and the test cost is effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structure schematic view of the immersion test device provided by the utility model embodiment.

[0018] MARK NUMBER EXPLANATION:

[0019] 1, immersion tank; 2, water injection pipe; 3, water outlet pipe; 4, water storage tank. DETAILED DESCRIPTION

[0020] In view of the deficiencies in the prior art, the present inventors have long-term research and a large number of practices, and finally propose the technical scheme of the utility model. The technical scheme, the implementation process and principles will be further explained as follows.

[0021] Please refer to Figure 1The embodiment provides a water immersion test device for a resistance heater, which aims to ensure that the resistance heater can normally work under specific test conditions. The device mainly comprises the resistance heater itself, a power supply module for providing power supply and an automatic circulating water immersion system. Specifically, the automatic circulating water immersion system comprises a water immersion tank 1, a circulating water supply assembly, a water level monitoring assembly, a rate adjusting assembly and a programmable logic controller. The resistance heater is placed in the water immersion tank 1 and connected to the power supply module through a wire, and a power switch is arranged on the power supply module to facilitate an operator to control the on-off of the power supply. In addition, the power supply module is connected to the programmable logic controller to ensure the automatic control of the whole water immersion test device.

[0022] The circulating water supply assembly is connected to the water immersion tank 1 and forms a loop for circulating water flow, the water level monitoring assembly is arranged on the inner wall of the water immersion tank 1, and the rate adjusting assembly is arranged on the circulating water supply assembly. The programmable logic controller is connected to the circulating water supply assembly, the water level monitoring assembly and the rate adjusting assembly respectively, and is used for controlling water injection or water discharge of the circulating water supply assembly according to a water level monitoring signal and adjusting the water injection or water discharge rate according to a preset circulating number. Specifically, the circulating number can be set according to the total test time length and the single test time length.

[0023] Specifically, the circulating water supply assembly is connected to the water immersion tank 1 to form a closed circulating flow loop, so that water can circulate in the system. The circulating water supply assembly mainly comprises a water storage tank 4, a water injection pipe 2 and a water outlet pipe 3. The water injection pipe 2 is responsible for pumping water from the water storage tank 4 and injecting it into the water immersion tank 1, and the water outlet pipe 3 is responsible for pumping water from the water immersion tank 1 and returning it to the water storage tank 4, forming a continuous circulation. In order to better control the water flow, the circulating water supply assembly further comprises a first water pump and a second water pump, and a pipe switch. The first water pump is connected to the water injection pipe 2 and is responsible for pumping water from the water storage tank 4 and injecting it into the water injection pipe 2. The second water pump is connected to the water outlet pipe 3 and is responsible for pumping water from the water storage tank 4 and injecting it into the water outlet pipe 3. The pipe switch is arranged on the water outlet pipe 3 and is used to control the on-off of the water flow, that is, to allow the water flow when needed, and to block the water flow at other times, so as to achieve the purpose of controlling the water flow.

[0024] In the embodiment, the water level monitoring assembly comprises a first limit stop and a second limit stop, the first limit stop is used to collect and send a first water level signal to the programmable logic controller, and the second limit stop is used to collect and send a second water level signal to the programmable logic controller.

[0025] Specifically, the first limit is configured to be installed on the inner wall of the water tank, and keeps a preset distance from the bottom of the water tank. Its main function is to monitor the water level, and when the water level reaches a certain height, the corresponding water level information can be collected, and the first water level signal is sent to the controller. At the same time, the second limit is set at the bottom of the water tank for monitoring the water level, and when the water level is lower than a certain height, i.e. the water is empty, the second water level signal is collected and sent to the controller.

[0026] The first limit can be a high limit sensor, and the second limit can be a low limit sensor, which can accurately identify the high and low state of the water level. The programmable logic controller receives the first water level signal from the first limit. When the controller receives the first water level signal, it controls the start of the second water pump and the opening of the pipeline switch, thereby realizing the function of draining water. Similarly, when the controller receives the second water level signal sent by the second limit, it controls the start of the first water pump and the opening of the pipeline switch to perform the operation of filling water. In this way, the controller can automatically adjust the water quantity in the water tank according to the change of the water level, and ensure that the water level remains in the ideal range.

[0027] In this scheme, the rate adjustment assembly includes a flow meter, a timer, and a numerical display, which are respectively connected with the controller and the circulating water supply assembly. The flow meter is configured at the water inlet of the circulating water supply assembly for accurate measurement of water flow; the timer is used to measure the water flow time, and the controller calculates the water flow rate according to the water flow and water flow time, and displays it on the numerical display. The controller is also responsible for adjusting the working state of the circulating water supply assembly according to the calculated water flow rate, to ensure that the water level remains in the ideal range. In addition, the flow meter can be but not limited to a magnetic flow meter.

[0028] The specific implementation process is as follows:

[0029] First, the resistance heat tracer sample is immersed in the water tank 1. The first water pump is started to begin injecting water flow into the water tank. As the water level gradually rises, the first limit stopper continuously monitors the change of the water level. Once the first limit stopper detects that the water level reaches the predetermined height, it immediately transmits the first water level signal to the programmable logic controller. Upon receiving this signal, the programmable logic controller quickly responds by issuing an instruction to stop the first water pump from working and interrupt the water injection. Then, the programmable logic controller activates the power switch to provide a certain duration of current for the resistance heat tracer sample. After that, the programmable logic controller instructs the second water pump to start and opens the pipe switch to begin the water draining process. The second limit stopper detects the change of the water level and transmits the second water level signal to the programmable logic controller. Upon receiving the second water level signal, the programmable logic controller instructs the second water pump to stop, thereby stopping the water draining. During the whole process, the programmable logic controller is also responsible for adjusting the flow meter and the timer to ensure that the whole period from the beginning of water injection to complete emptying is controlled between 2.5-4.5 min. After the water flow is completely drained, the programmable logic controller continues to maintain the power switch to provide power for the resistance heat tracer sample for 30 seconds, and then cuts off the power to complete a cycle. Subsequently, the water flow injection of the next cycle is started. The whole test process lasts for 24 hours. When the water flow is completely drained, the programmable logic controller continues to maintain the state of the power switch to provide power for the resistance heat tracer sample for 30 seconds to ensure that the sample can be fully cooled after the test is completed. Then, the programmable logic controller cuts off the power to complete a cycle. Subsequently, the water flow injection of the next cycle is automatically started. The whole test process will last for 24 hours to ensure that the performance of the resistance heat tracer sample is fully and accurately evaluated.

[0030] It should be understood that the above embodiments are only to illustrate the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made in accordance with the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. An automatic recirculating water immersion system characterized by, The automatic circulating water immersion system comprises a water immersion tank, a circulating water supply assembly, a water level monitoring assembly, a rate adjusting assembly, and a controller. The water level monitoring assembly comprises a first limiter and a second limiter. The circulating water supply assembly comprises a water storage tank, a water inlet pipe, and a water outlet pipe. The rate adjusting assembly comprises a flow meter, a timer, and a numerical display.

2. The automatic recirculating water bath system of claim 1, wherein, The automatic circulating water immersion system further comprises a sample, a power supply, and a power switch. The sample is an electric resistance heater.

3. A water immersion test device characterized by comprising: ​ 4. The flooding test device according to claim 3, characterized in that ​

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