CN201716199U - Detection device of heating radiators - Google Patents

Abstract

The utility model discloses a heating radiator detection device, which comprises a water circulation system. The water circulation system comprises a sequentially connected primary heating water tank, a high open water tank, a secondary heating water tank and a tertiary heating water tank. The tertiary heating water tank passes through the interlayer air conditioning system. It is connected to the water inlet of the airtight sample test chamber, and the airtight sample test chamber passes through the filter valve, pressure gauge, manual regulating valve, flow meter, PID flow controller, flow measurement system and finally returns to the heating water tank to continue the cycle. The utility model has the advantages of good flow stability, short test period, fast temperature adjustment speed, less air blockage, and uniform interlayer temperature.

Description

Heating Radiator Testing Equipment

technical field

The utility model relates to a detection device, in particular to a detection device for a heating radiator with good flow stability, short test period, fast temperature adjustment speed, less air blockage and uniform interlayer temperature. the

Background technique

At present, similar heating radiator heat dissipation detection devices on the market have: a kind of is radiator heat dissipation digital measuring instrument, is a kind of instrument that measures the heat dissipation consumption of resident or room radiator. It is a digital measuring instrument for radiator heat dissipation. The main feature is that a thermistor is added to the pulse oscillator, which becomes the "detection head" of the counter, so that the frequency of the oscillation pulse changes linearly with the change of its resistance. In the pulse control circuit There is a thermistor that is linearly sensitive to temperature to achieve the purpose of temperature control. The meter can measure the heat dissipation consumption of radiators in each household or room, so that the heating fee can be charged according to the amount of heat energy used. It has the functions of independent control of radiators and automatic recording of its heat. One is a heating radiator heat dissipation detection system, which is a device for detecting the heat dissipation of radiator products. The radiator to be tested is placed in a closed thermal chamber, and the pipelines on both sides of the radiator are respectively connected with an inlet water temperature sensor and an outlet water temperature sensor. In the external environment insulation room, a constant temperature wind surrounding air duct is formed between the closed thermal chamber and the external environmental insulation room. The surrounding air duct is equipped with a refrigeration system, an air electric heater and a fan; at the same time, a closed thermal chamber is equipped with A camera monitoring device connected with a microcomputer system. However, PID has not yet been adopted to control the heating and cooling system; the interlayer uses air supply and return air circulation, stable control of wind speed, uniform temperature, fast heating and cooling speed, and the advent of heating radiator detection devices with short detection time. the

Utility model content

The purpose of this utility model is to provide a heating radiator detection device with high temperature control precision, stable flow and pressure, accurate measurement of time and mass flow, short detection cycle and accurate detection results. the

The purpose of this utility model is to realize through the following technical solutions:

A heating radiator detection device, including a water circulation system, the water circulation system includes a sequentially connected primary heating water tank, a high-level open water tank, a secondary heating water tank, and a tertiary heating water tank, and the tertiary heating water tank is tested with a closed sample through an interlayer air conditioning system The water inlet of the chamber is connected, and the airtight sample test chamber passes through the filter valve, pressure gauge, manual regulating valve, flow meter, PID flow controller, flow measurement system and finally returns to the heating water tank to continue the cycle. the

Preferably, the flow measurement system includes an electronic balance, a water collection device connected to the electronic balance and three solenoid valves distributed on the circuit. the

Preferably, the interlayer air-conditioning system is arranged on the periphery of the airtight sample testing room, and is composed of an air supply box, an air supply pipe, a diffuser, a temperature adjustment box, a return air box, a regulating valve, and a return air pipe connected in sequence. the

Preferably, the interlayer air conditioning system uses nine diffusers and five air return ducts. the

Preferably, the tertiary heating water tank is connected with a water tank exhaust valve. the

Preferably, an overflow pipe and a high-temperature silent water pump are arranged between the primary heating water tank and the high-level open water tank.

The beneficial effects of the utility model are that the flow stability is greatly improved, the test cycle is shortened, the temperature adjustment speed is fast, air blockage is not easy to occur, the temperature of the interlayer is uniform, the stability is high, and the wind speed is controlled within the standard range. the

Description of drawings

Fig. 1 Schematic diagram of detection system structure;

Fig. 2 is a structural diagram of a sample holder for fixing a radiator in a closed chamber;

Fig. 3 is a schematic diagram of a PID flow controller;

Figure 4 Schematic diagram of interlayer air conditioning system;

Fig. 5 is electrical control schematic diagram;

Figure 6 is a flow chart of the software operation of the industrial computer. the

Detailed ways

The utility model will be described in further detail below according to the embodiments. the

As shown in Figures 1-6, the utility model is suitable for testing heating radiators in which the heat medium is water and the heat is provided by a remote heat source (such as a boiler). A heating radiator detection device, including a water circulation system, the water circulation system includes a sequentially connected primary heating water tank 1, a high open water tank 3, a secondary heating water tank 4 and a tertiary heating water tank 5, and the tertiary heating water tank 5 is conditioned by interlayer air The system 7 is connected to the water inlet of the airtight sample test chamber 9, and the airtight sample test chamber 9 passes through the filter valve 10, the pressure gauge 11, the manual regulating valve 12, the flow meter 13, the PID flow controller 14, and the flow measurement system to return to the water at last. The heating water tank 1 continues to circulate. The flow measuring system comprises an electronic balance 15, a water collecting device 16 connected to the electronic balance 15 and three electromagnetic valves 17 distributed on the circuit, and the interlayer air conditioning system 7 is arranged on the periphery of the airtight sample testing chamber 9, and is composed of an air supply box 22, The air supply pipe 21, the diffuser 20, the temperature adjustment box 27, the air return box 25, the regulating valve 26, and the air return pipe 24 are sequentially connected. The interlayer air conditioning system 7 uses nine diffusers 20 and five return air pipes 24, the three-time heating water tank 5 is connected with a water tank exhaust valve 18, and an overflow pipe 6 and a high-temperature silent water pump 2 are arranged between the primary heating water tank 1 and the high-level open water tank 3. the

The specific implementation system equipment mainly includes: airtight sample testing room 9, water circulation system, interlayer air conditioning system 7, electrical control system and industrial computer software control system. The airtight sample test room is made of iron, the surface is coated with non-metallic paint, and the door of the small room is strictly airtight. A radiator sample rack is fixed on one side of the wall (see Figure 2 for the device), and the temperature sensor uses a heat-resistant radiation cover. There are two sets of inlet and outlet water pipes in the room for the installation of samples. There are threaded temperature sensors installed on the water pipes, one for each inlet and outlet, and the humidity and atmospheric pressure transmitters are placed in the center of the room. Lamps for lighting. The small room is made of metal, the inner surface is coated with non-metallic paint, the inner wall has a movable specimen fixing frame, and the room is equipped with temperature sensors, humidity sensors, and air pressure sensors; four vertical space temperature sensors are evenly distributed in the small room space. 8, and 7 temperature sensors are pasted on six walls, and all temperature sensors in the room use heat-resistant radiation covers to make the test temperature accurate and avoid strong heat radiation. There are two sets of inlet and outlet water pipes in the room for the installation of samples. There are threaded temperature sensors installed on the water pipes, one for each inlet and outlet, and the humidity and atmospheric pressure transmitters are placed in the center of the room. the

The water circulation system passes through filter valve, pressure gauge, manual regulating valve, flow meter, PID flow controller, flow measurement system (including electronic balance, water collection device connected with electronic balance and three solenoid valves distributed on the circuit) in sequence. Return to the heating water tank once to continue the cycle. When the flow measurement system is tested, the solenoid valve above the water collecting device is opened and the solenoid valve flowing into the primary heating water tank is closed at the same time. This action lasts for one minute, and after one minute, the two solenoid valves perform opposite actions respectively. After opening and closing the corresponding electromagnetic for one minute, the water collecting device stores water for one minute, and the application software connected with the electronic balance and the industrial computer records the mass of the next minute and then calculates the mass flow rate of the water in the system (unit kg /h), the solenoid valve connected to the bottom of the water collection device is opened for a certain period of time in the 5th second after the software calculation and data storage is completed, and the water flows back to the heating water tank through the funnel on the countertop, and finally the solenoid valve is closed within the set sampling period Repeat the above actions. The flow controller uses a proportional valve which is connected to the flow meter section to form a closed loop flow control system. Measurements are made in the laminar region of the flow meter and flow is controlled using a PID controller that positions the valve at a preset flow value. The controller receives a digital control signal (preset flow value) from the software program in the industrial computer. Laminar flow meters combine solid-state differential pressure, absolute pressure, and temperature sensors and calculate flow in an inherently linear manner. All parameters are displayed both on the dynamic display and on the software interface of the industrial computer. The range of the flow controller meets the low flow test of the system, which improves the test accuracy and reduces the blind area. After passing through the filter valve, the primary heating water tank is sequentially pumped to the high-level open water tank, the secondary heating water tank and the tertiary heating water tank by the high-temperature silent water pump, and finally connected to the sample water inlet through the interlayer. A closed waterway is formed, as shown in Figure 1. the

Sandwich air-conditioning system (see Figure 4): The outer protective structure of the sandwich adopts polyurethane insulation board; the door adopts the semi-recessed cold storage standard sealed door; the refrigeration compressor of the sandwich temperature control device is an American Copeland Scroll; it operates in conjunction with the following equipment Constitutes a mezzanine air-conditioning system. It is composed of air supply box, air supply pipe, diffuser, temperature control box, regulating valve, return air box and return air pipe in sequence. The air cylinder is insulated with zinc-iron collodion; Diffuser and five return duct installations. the

Electrical control system (see Figure 5): The system mainly includes solid state relays, mechanical relays, 32 output switch boards, thirty temperature analog signal modules and two 4-20mA analog signal modules, 12VDC and 24VDC power supplies, 485 and RS232 Converters and other electrical components. The system mainly completes the conversion of strong current and weak current, the execution of software instructions, the conversion of A/D signals of various sensors, and input and output. The system adopts PID control, and the flow, temperature, and acquisition time are completely controlled by the electrical system, and the instructions of the electrical system come from the program set by the software of the industrial computer. At the same time, 30-way temperature analog signal modules and two 4-20mA analog signal modules are used. Connect the temperature sensors and humidity and atmospheric pressure transmitters, and display and store the digital signals for calculation according to the software program. At the same time, it relies on high-temperature silent water pumps and high-precision platinum resistance temperature sensors for accurate control. the

Industrial computer software control system (see Figure 6): This system mainly completes the test sampling period, test cycle times, detection condition setting and stability condition setting, etc., and at the same time realizes the storage and calculation of system data, temperature curve display, and three-dimensional diagram of temperature points in the small room space , working conditions, temperature, flow and other parameters, and the sending of operating instructions for each system. This set of software is equipped with the function of automatically judging the stability of the continuous recording data, judging the stability of the data according to the standard requirements, eliminating the data that does not meet the conditions, and subtracting the tedious work of manually judging the records, truly realizing the seamlessness of the working condition test. man on duty. the

Claims (6)

1. heating radiator pick-up unit, it is characterized in that: comprise water circulation system, described water circulation system comprises a heating water tank that is linked in sequence, high-order open water tank, post bake water tank and three heating water tank, three times heating water tank is connected with the water inlet of airtight sample test chamber by the interlayer air handling system, and airtight sample test chamber is got back to a heating water tank at last through strainer valve, tensimeter, manual modulation valve, flowmeter, pid stream amount controller, Flow Measuring System successively and continued circulation.

2. heating radiator pick-up unit according to claim 1 is characterized in that: described Flow Measuring System comprises electronic balance, the captation that is connected with electronic balance and be distributed in three solenoid valves on the loop.

3. heating radiator pick-up unit according to claim 1 and 2, it is characterized in that: described interlayer air handling system is arranged at that airtight sample test is outdoor encloses, and being linked in sequence by wind pushing box, ajutage, air diffuser, controlled temperature cabinet, air-intaking box, variable valve, backwind tube forms.

4. according to the arbitrary described heating radiator pick-up unit of claim 1-3, it is characterized in that: described interlayer air handling system adopts nine air diffusers and five backwind tubes.

5. according to the arbitrary described heating radiator pick-up unit of claim 1-3, it is characterized in that: described three heating water tank are connected with the water tank vent valve.

6. according to the arbitrary described heating radiator pick-up unit of claim 1-3, it is characterized in that: be provided with run-down pipe and the quiet water pump of high temperature between a described heating water tank, the high-order open water tank.

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