CN211696532U - Cold and heat source system flow testing device - Google Patents

Abstract

The utility model discloses a cold and heat source system flow test device, including the tee bend, the three-way A port is as the water inlet, and the B port is as the delivery port, three-way C port is connected with the test tube, the test tube mouth of pipe adopts the flange to seal, be provided with the string bag in the tee bend, be provided with temperature probe and flow sensor in the string bag, temperature probe and flow sensor are connected with data acquisition module through sensing line A, sensing line B respectively. The utility model discloses a sensing wire with temperature probe and flow sensor direct through to supply the return water pipe in, realize the direct contact of detecting head and medium, measure the ground source side and user side and supply return water temperature and flow.

Description

Cold and heat source system flow testing device

Technical Field

The utility model relates to a flow test device, more specifically say, relate to a cold and hot source system flow test device.

Background

Along with the increasing development of industrial technology and the development and utilization of new energy, in the process of building energy conservation transformation, flow detection becomes an important component of detection technology, and the flow can directly reflect the flow characteristics and the working state of fluid and the energy consumption problem of buildings. In the process of making an energy saving strategy and improving the energy utilization rate, temperature, pressure and flow are main influence factors, wherein the detection and consideration of the temperature and the pressure are mature, but the monitoring and the related analysis of the flow are not perfect and accurate, so the importance of flow monitoring is more prominent. Generally, the flow monitoring can be performed by a direct measurement method or measurement on the outer wall of a pipeline, such as an electromagnetic flow meter and an ultrasonic flow meter, which is difficult to meet the requirements of stability, high precision, low error, strong real-time property and capability of realizing remote concentration in the production process.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming not enough among the prior art, provide a cold and heat source system flow testing arrangement, through the sensing line with temperature probe and flow sensor direct connection to supply the return water pipeline, realize the direct contact of detecting head and medium, measure the place source side and user side and supply return water temperature and flow.

The purpose of the utility model is realized through the following technical scheme.

The utility model discloses cold and heat source system flow test device, including the tee bend, three-way A port is as the water inlet, and the B port is as the delivery port, three-way C port is connected with the test tube, the test tube mouth of pipe adopts the flange to seal, be provided with the string bag in the tee bend, be provided with temperature probe and flow sensor in the string bag, temperature probe and flow sensor are connected with data acquisition module through sensing line A, sensing line B respectively.

And a sensing line hole opening is reserved on the flange.

The net bag is made of copper.

The temperature probe adopts a copper-constantan thermocouple probe, one end of the copper-constantan thermocouple probe is dissolved to be made into a temperature probe (18), and the other end of the copper-constantan thermocouple probe is used as a sensing wire A (17) and is directly connected to the acquisition module.

The flow sensor adopts a plug-in flow sensor.

And ZS-933 ceramic waterproof and anticorrosion coating layers are sprayed on the sensing line A and the sensing line B.

Compared with the prior art, the utility model discloses a beneficial effect that technical scheme brought is:

the utility model discloses the real-time test and the data reading of flow can be accomplished to electromagnetic flowmeter A, and the error also is in the allowed band, but can not accomplish the storage to data, consume a large amount of manpowers and time; the measuring circuit of the ultrasonic flowmeter B is more complex than that of a common flowmeter, has poor anti-interference capability and low precision grade, and cannot store a long-term data record.

The utility model discloses a copper-constantan thermocouple sensing wire sensitivity high, interchangeability good, low price, be applicable to remote temperature measurement and automatic control's advantage, simultaneously the utility model discloses testing arrangement can accomplish the consumption that reduces the manpower when long-term test in the within range that the error allows, directly conveys the PC end with data, carries out the storage of real-time detection and data, moreover the utility model discloses pass through copper-constantan thermocouple sensing wire with temperature probe and bayonet flow sensor and directly put through to supplying the return water pipeline, realize the direct contact of detecting head and medium, can reach high accuracy, low error, real-time strong, can realize remote concentrated requirement.

Drawings

FIG. 1 is a schematic view of the flow testing device of the cold and heat source system of the present invention

FIG. 2 is a cross-sectional view of the middle flange of the present invention

Fig. 3 is a schematic view of the flow rate testing device of the present invention, which is installed by taking a sewage source heat pump system as an example.

FIG. 4 is a schematic view of the local connection comparing three flow measurement methods of the present invention

FIG. 5 is a data flow diagram of three test devices.

Reference numerals: 1 sewage main canal, 2 sewage introducing pool, 3 sewage pump, 4 sewage heat exchanger, 5 medium pump, 6 pressure gauge, 7 cold and heat source system flow testing device, 8 heat pump unit, 9 compressor, 10 expansion valve, 11 condenser, 12 evaporator, 13 end circulating pump, 14 data information acquisition platform, 15 end user, 16 flange, 17 sensing line A, 18 temperature probe, 19 sensing line B, 20 flow sensor, 21 string bag, 22 sensing line orifice, 23 three testing device, 24 electromagnetic flowmeter, 25 ultrasonic flowmeter.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1 and fig. 2, the utility model discloses cold and heat source system flow testing arrangement, including tee bend 23, tee bend 23's A port is as the water inlet, and the B port is as the delivery port, and A port and B port are in on a straight line, tee bend 23's C port is connected with the test tube. And a pipe orifice at one end of the test pipe 26 is connected with a port C of the tee 23, the other pipe orifice is sealed by a flange 16, and a sensing line orifice 22 is reserved on the flange 16.

Be provided with string bag 21 in the tee bend 23, be provided with temperature probe 18 and flow sensor 20 in the string bag 21, temperature probe 18 and flow sensor 20 are connected with the data acquisition module through sensing line A17, sensing line B19 respectively, and the data acquisition module is connected with data information collection platform 14. The data acquisition module is used for acquiring data information, converting output signals of the temperature probe 18 and the flow sensor 20 into data, and displaying and collecting the data on the data information acquisition platform 14.

The net bag 21 is made of copper and used for fixing and protecting the probe, and covers the temperature probe 18 and the flow sensor 20 to be arranged at the accurate position of the pipeline without being damaged.

The temperature probe 18 is made of a copper-constantan thermocouple, one end of the copper-constantan thermocouple is dissolved to make the temperature probe 18, and the other end of the copper-constantan thermocouple is used as a sensing wire A17 to be directly connected to the acquisition module to output a temperature signal.

The flow sensor 20 is a plug-in flow sensor, and is connected to the acquisition module through a sensing line B19 to output a flow signal. The sensing wire B19 is made of a copper-constantan thermocouple.

The ZS-933 ceramic waterproof anticorrosive paint is sprayed outside the sensing line A17 and the sensing line B19, is an inorganic modified waterproof anticorrosive paint, has thin coating, high hardness and high self-cleaning property, is resistant to acid and alkali soaking corrosion at high temperature and normal temperature for a long time, is sprayed on the sensing line, and slows down oxidation corrosion caused by long-term use.

The detailed arrangement position and application process of the present invention will be described below with reference to the embodiments and the sewage source heat pump system as an example, and the following description is made specifically.

As shown in fig. 3, the sewage source heat pump system includes a sewage main canal 1, a sewage introducing pool 2, a sewage pump 3, a sewage heat exchanger 4, an intermediate pump 5, a pressure gauge 6, a cold and heat source system flow rate testing device 7, a heat pump unit 8, a compressor 9, an expansion valve 10, a condenser 11, an evaporator 12, a terminal circulating pump 13, a data information acquisition platform 14, and a terminal user 15. The utility model discloses a cold and hot source system flow testing arrangement sets up respectively on sewage source heat pump system's supply channel and wet return, sets up three test point on supply channel and the wet return respectively, measures the flow and the temperature of six test point departments altogether, can convey the temperature and the flow variation at the different moments of data information acquisition platform 14's numerical value reaction through data acquisition module, and then the parameter variation of real-time supervision confession return.

In order to emphasize the utility model discloses an utilize the advantage, in one of them test point department except installing the utility model discloses a cold and hot source system flow test device 7 is outside, still sets up electromagnetic flowmeter 24 and ultrasonic flowmeter 25, carries out the contrast test analysis to three kinds of testing arrangement. Wherein, the electromagnetic flowmeter 24 is a Mike electromagnetic flowmeter, and the ultrasonic flowmeter 25 is an ultrasonic flowmeter for joint measurement automation. The partial connection diagram of the three test devices is shown in fig. 4, and the data flow diagram of the three test devices is shown in fig. 5. At first, check three testing arrangement, then the construction again, begin for the test of two days in date, set up data for every 10min record of electromagnetic flowmeter and ultrasonic flowmeter, and the utility model discloses a cold and hot source system flow testing arrangement sets up data once of every 1min record. After the test is finished, the error of the test device is analyzed, and the test results of the three test devices are within 5 percent of the error.

The sewage source heat pump system is a set of common sewage source heat pump system, the pressure bearing capacity range of the system is 0.3 MPa-0.4 MPa, the recommended height of a test pipeline is 40 m-45 m, the test pipeline is arranged in a pipeline well, and an access hole is arranged corresponding to the roof. Other cold and heat source systems or conventional cold and heat source systems can be applied with reference to the system.

Although the present invention has been described with reference to the accompanying drawings, the present invention is not limited to the above specific functions and operations, and the above specific embodiments are only illustrative and not restrictive, and those skilled in the art can make many forms without departing from the spirit and scope of the present invention, which is within the protection scope of the present invention.

Claims (6)

1. The utility model provides a cold and heat source system flow testing arrangement, includes tee bend (23), the A port of tee bend (23) is as the water inlet, and the B port is as the delivery port, its characterized in that, the C port of tee bend (23) is connected with test tube (26), test tube (26) mouth of pipe adopts flange (16) to seal, be provided with string bag (21) in tee bend (23), be provided with temperature probe (18) and flow sensor (20) in string bag (21), temperature probe (18) and flow sensor (20) are connected with data acquisition module through sensing line A (17), sensing line B (19) respectively.

2. The cold heat source system flow test device according to claim 1, wherein the flange (16) is reserved with a sensing line orifice (22).

3. The flow rate testing device of cold and heat source system as claimed in claim 1, wherein said net bag (21) is made of copper.

4. The flow rate testing device of the cold and heat source system according to claim 1, wherein the temperature probe (18) is a copper-constantan thermocouple probe, one end of the copper-constantan thermocouple probe is dissolved to form the temperature probe (18), and the other end of the copper-constantan thermocouple probe is directly connected to the acquisition module as a sensing line A (17).

5. The cold heat source system flow test device according to claim 1, wherein the flow sensor (20) is an insertion type flow sensor.

6. The flow rate testing device of the cold and heat source system according to claim 1, wherein the sensing line a (17) and the sensing line B (19) are coated with ZS-933 ceramic waterproof and anticorrosive paint layers.

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