A pulsation detection device for ultrasonic gas meter

Abstract

The present invention discloses a pulsation detection device for an ultrasonic gas meter, which relates to the technical field of ultrasonic gas meters and includes a detection platform, on which a fan, a control display, a solenoid valve, a plurality of pipelines, a gas meter test piece group, a first sealed box, a second sealed box and a detection water tank are arranged, the solenoid valve is installed on the outside of the control display, and the fan is provided with an air inlet and an air outlet. The present invention makes the detection simpler and more convenient when performing pulsation detection on an ultrasonic gas meter, and can detect whether there is leakage at the connection between the gas meter test piece group and the gas meter standard part and the pipeline, thereby avoiding detection errors caused by leakage at the connection, and can reduce the temperature of the gas inside the pipeline at the connection between the fan, the solenoid valve and the gas meter test piece group, thereby avoiding detection errors caused by high temperature, and enhancing the accuracy of the detection.

Description

Technical Field

[0001] The invention relates to the technical field of ultrasonic gas meters, and in particular to a pulsation detection device for an ultrasonic gas meter. Background Art

[0002] Working principle of ultrasonic gas meter: Ultrasonic gas meter uses the time difference method to measure the gas flow rate, and reflects the flow rate of the fluid by measuring the difference in the speed of ultrasonic signal when it propagates in the fluid in the downstream and upstream. Because the error caused by the change of sound speed with the fluid temperature is small, the accuracy is high, and it is currently widely used.

[0003] At present, in the process of processing ultrasonic gas meters, in order to improve the pass rate of ultrasonic gas meters, pulsation detection is generally performed on ultrasonic gas meters. However, the structure of some ultrasonic gas meter pulsation detection devices is relatively simple. During the detection process, a pipeline is generally connected between the gas meter test piece and the gas meter standard part, and the test piece is detected through the error in the pipeline gas, which is rather troublesome. In addition, during the detection process, it is not possible to detect whether the pipeline connecting the gas meter test pieces is sealed, which is prone to detection errors. During the detection, the standard parts or the test pieces are generally tested by fan blowing. During the fan blowing process, heat is easily generated, which causes the flowing gas to become hot, affecting the accuracy of the detection.

[0004] As mentioned above, we have designed a pulsation detection device for an ultrasonic gas meter to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a pulsation detection device for an ultrasonic gas meter.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A pulsation detection device for an ultrasonic gas meter, comprising a detection platform, on which a fan, a control display, a solenoid valve, a plurality of pipelines, a gas meter test piece group, a first sealed box, a second sealed box and a detection water tank are arranged, the solenoid valve is installed on the outside of the control display, an air inlet and an air outlet are arranged on the fan, the air inlet of the fan is connected to the solenoid valve on the outside of the control display through a pipeline, the other side of the solenoid valve is connected to the gas meter test piece group through a pipeline, the gas meter test piece group includes a plurality of gas meter test pieces connected in series in sequence, the fan, the control display and the gas meter test piece group are arranged in the first sealed box, one side of the first sealed box is connected to a first connecting pipe, the gas meter test piece group is arranged in the second sealed box, one side of the second sealed box is connected to a second connecting pipe, and the other ends of the first connecting pipe and the second connecting pipe both extend into the detection water tank;

[0008] The shells of the first sealed box and the second sealed box are both hollow structures, and water cooling pipes are installed inside the shells of the first sealed box and the second sealed box. The outlets of the two groups of water cooling pipes are connected to a heat exchanger, and the other end of the heat exchanger is connected to a water storage tank, and the inlets of the two groups of water cooling pipes are connected to the water outlet of the water storage tank.

[0009] Preferably, the two water-cooling pipes are installed in an "S" shape in the hollow structure, a water pump is connected between the water storage tank and the inlets of the two groups of water-cooling pipes, and a wire is connected between the water pump and the control display.

[0010] Preferably, the shells of the first sealed box and the second sealed box include an outer shell and an inner shell, the outer shell and the inner shell are made of stainless steel, and delivery pipes connected to the heat exchanger and the water storage tank are provided on both sides of the water cooling pipe.

[0011] Preferably, a touch screen is installed on the control display, and the control display is electrically connected to the solenoid valve.

[0012] Preferably, a gas flow control valve is installed on the pipeline between the fan and the solenoid valve.

[0013] Preferably, a gas flow sensor is installed between the solenoid valve and the control display.

[0014] Preferably, a temperature sensor is installed on the outside of the pipeline between the fan and the control display, and a wire is connected between the temperature sensor and the control display.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In the process of passing through each gas meter to be tested, the fan is used to suck air again and again, and the first gas meter to be tested, the second gas meter to be tested, the third gas meter to be tested... the nth gas meter to be tested are tested in turn. The error between each gas meter to be tested is calculated by the difference in gas flow rate. There is no need to test through standard parts, which makes the test simpler and more convenient, and saves losses;

[0017] 2. By connecting a first connecting pipe between the first sealed box installed with the gas meter standard parts and the gas meter test parts group and the test water tank, and connecting a second connecting pipe between the second sealed box installed with the gas meter test parts group and the test water tank, it is possible to detect whether there is gas inside the first sealed box and the second sealed box, thereby detecting whether there is leakage at the connection between the fan, the solenoid valve, the gas meter test parts group and the pipeline, avoiding detection errors caused by leakage at the connection, and enhancing the accuracy of the detection process;

[0018] 3. Water-cooling pipes are provided inside the first sealed box and the second sealed box, which can transmit information to the control display when the temperature detector detects that the temperature of the gas inside the pipeline is high. The control display controls the water pump and the heat exchanger to work, so that the water cooling circulation is carried out inside the water-cooling pipe, and the gas inside the first sealed box and the second sealed box is cooled through the internal stainless steel inner shell, thereby reducing the temperature of the gas inside the pipeline at the connection of the fan, solenoid valve and the gas meter test piece group, avoiding detection errors caused by high temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of a pulsation detection device for an ultrasonic gas meter proposed by the present invention;

[0020] Figure 2 A sealing detection flow chart of a pulsation detection device for an ultrasonic gas meter proposed by the present invention;

[0021] Figure 3 This is a working flow chart of a pulsation detection device for an ultrasonic gas meter proposed by the present invention.

[0022] In the figure: 1 test bench, 2 fan, 3 control display, 4 gas meter test piece group, 5 water storage tank, 6 first sealed box, 7 second sealed box, 8 solenoid valve, 9 water cooling pipe, 10 heat exchanger, 11 test water tank, 12 first connecting pipe, 13 second connecting pipe. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] Embodiment 1

[0025] Reference Figure 1-3 , a pulsation detection device for an ultrasonic gas meter, comprising a detection platform 1, characterized in that a fan 2, a control display 3, a solenoid valve 8, a plurality of pipelines, a gas meter test piece group 4, a first sealed box 6, a second sealed box 7 and a detection water tank 11 are arranged on the detection platform 1, the solenoid valve 8 is installed on the outside of the control display 3, an air inlet and an air outlet are arranged on the fan 2, the air inlet of the fan 2 is connected to the solenoid valve 8 on the outside of the control display 3 through a pipeline, the other side of the solenoid valve 8 is connected to the gas meter test piece group 4 through a pipeline, the gas meter test piece group 4 includes a plurality of gas meter test pieces connected in series in sequence, the fan 2, the control display 3 and the gas meter test piece group 4 are installed in the first sealed box 6, one side of the first sealed box 6 is connected to a first connecting pipe 12, the gas meter test piece group 4 is installed in the second sealed box 7, one side of the second sealed box 7 is connected to a second connecting pipe 13, and the other ends of the first connecting pipe 12 and the second connecting pipe 13 both extend into the detection water tank 11;

[0026] In this embodiment, the shells of the first sealed box 6 and the second sealed box 7 are both hollow structures, and water cooling pipes 9 are installed inside the shells of the first sealed box 6 and the second sealed box 7. The outlets of the two groups of water cooling pipes 9 are connected to the heat exchanger 10, and the other end of the heat exchanger 10 is connected to the water storage tank 5. The inlet of the two groups of water cooling pipes 9 is connected to the water outlet of the water storage tank 5;

[0027] More specifically, two water cooling pipes are installed in the hollow structure in an "S" shape, a water pump is connected between the water storage tank 5 and the inlet of the two groups of water cooling pipes 9, a wire is connected between the water pump and the control display 3, the shell of the first sealed box 6 and the second sealed box 7 includes an outer shell and an inner shell, the outer shell and the inner shell are made of stainless steel, and both sides of the water cooling pipe 9 are provided with a delivery pipe connected to the heat exchanger 10 and the water storage tank 5;

[0028] In this embodiment, a touch display screen is installed on the control display 3, the control display 3 is electrically connected to the solenoid valve 8, a gas flow control valve is installed on the pipeline between the fan 2 and the solenoid valve 8, a gas flow sensor is installed between the solenoid valve 8 and the control display 3, a temperature sensor is installed on the outside of the pipeline between the fan 2 and the control display 3, and a wire is connected between the temperature sensor and the control display 3.

[0029] Working principle: When performing pulsation detection on the ultrasonic gas meter, firstly, a pipeline is connected between the fan 2, the control display 3 and the gas meter test piece group 4 on the detection platform 1, wherein the gas meter test piece group 4 includes a plurality of gas meter test pieces, which are connected in series. When working, firstly, the control display 3 controls the solenoid valve 8 to work, and the fan 2 works, and the gas meter test piece group 4 is inhaled through the pipeline and the solenoid valve 8. During the inhalation process, the gas passes through the gas flow sensor and transmits the data to the control display 3, and the data of the gas meter test piece is stored and analyzed. Then, the gas passes through the gas meter test pieces connected in series in turn, and in the process of passing through each gas meter test piece, the gas is inhaled again and again by the fan 2, and the first gas meter test piece, the second gas meter test piece, the third gas meter test piece...the nth gas meter test piece are tested in turn, and the error between each gas meter test piece is calculated by the difference in gas flow rate;

[0030] When there are four gas meter test pieces, the gas flow data passing through the four gas meter test pieces will be transmitted to the control display 3. When the flow data of one, two or three gas meter test pieces are different from the flow data of the other three, two or one gas meter test pieces, the control display 3 will analyze the data and propose the number of gas meter test pieces with errors and the positions of the series connections.

[0031] In the above embodiment, there is no need to pass the standard parts test, the test is simpler and more convenient, and the loss is saved;

[0032] At the same time, during the detection process, by connecting the first connecting pipe 12 between the first sealed box 6 equipped with the fan 2, the control display 3 and the gas meter test piece group 4 and the detection water tank 11, and connecting the second connecting pipe 13 between the second sealed box 7 equipped with the gas meter test piece group 4 and the detection water tank 11, whether there is gas inside the first sealed box 6 and the second sealed box 7 is detected by checking whether bubbles emerge from the first connecting pipe 12 and the second connecting pipe 13 and the detection water tank 11, thereby detecting whether there is leakage at the connection between the fan 2, the solenoid valve 8 and the gas meter test piece group 4 and the pipeline, avoiding detection errors due to leakage at the connection, and enhancing the accuracy of the detection process;

[0033] It should be noted that a water-cooling pipe 9 is provided inside the first sealed box 6 and the second sealed box 7, which can transmit information to the control display 3 when the temperature detector detects that the temperature of the gas inside the pipeline is high. The control display 3 controls the water pump and the heat exchanger 10 to work, so that the water cooling circulation is carried out inside the water-cooling pipe 9, and the gas inside the first sealed box 6 and the second sealed box 7 is cooled through the internal stainless steel inner shell, thereby reducing the temperature of the gas inside the pipeline at the connection between the fan 2, the solenoid valve 8 and the gas meter test piece group 4, avoiding detection errors caused by high temperature.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pulsation detection device for an ultrasonic gas meter, comprising a detection platform (1), characterized in that: The testing platform (1) is provided with a fan (2), a control display (3), a solenoid valve (8), a plurality of pipelines, a gas meter test piece group (4), a first sealed box (6), a second sealed box (7) and a testing water tank (11); the solenoid valve (8) is installed on the outside of the control display (3); an air inlet and an air outlet are provided on the fan (2); the air inlet of the fan (2) is connected to the solenoid valve (8) on the outside of the control display (3) through a pipeline; the other side of the solenoid valve (8) is connected to the gas meter test piece group (4) through a pipeline; The gas meter test piece group (4) comprises a plurality of gas meter test pieces connected in series in sequence, the fan (2), the control display (3) and the gas meter test piece group (4) are installed in a first sealed box (6), one side of the first sealed box (6) is connected to a first connecting pipe (12), the gas meter test piece group (4) is installed in a second sealed box (7), one side of the second sealed box (7) is connected to a second connecting pipe (13), and the other ends of the first connecting pipe (12) and the second connecting pipe (13) both extend into a detection water tank (11); The shells of the first sealed box (6) and the second sealed box (7) are both hollow structures, and water cooling pipes (9) are installed inside the shells of the first sealed box (6) and the second sealed box (7), the outlets of the two groups of water cooling pipes (9) are connected to a heat exchanger (10), the other end of the heat exchanger (10) is connected to a water storage tank (5), and the inlets of the two groups of water cooling pipes (9) are connected to the water outlet of the water storage tank (5); The two water cooling pipes are installed in the hollow structure in an "S" shape, a water pump is connected between the water storage tank (5) and the inlets of the two groups of water cooling pipes (9), and a wire is connected between the water pump and the control display (3); The shells of the first sealed box (6) and the second sealed box (7) include an outer shell and an inner shell, and the outer shell and the inner shell are made of stainless steel. Delivery pipes connected to the heat exchanger (10) and the water storage tank (5) are provided on both sides of the water cooling pipe (9).

2. The pulsation detection device of an ultrasonic gas meter according to claim 1, characterized in that: A touch screen is installed on the control display (3), and the control display (3) is electrically connected to the solenoid valve (8).

3. The pulsation detection device of an ultrasonic gas meter according to claim 1, characterized in that: A gas flow control valve is installed on the pipeline between the fan (2) and the solenoid valve (8).

4. The pulsation detection device for an ultrasonic gas meter according to claim 1, characterized in that: A gas flow sensor is installed between the solenoid valve (8) and the control display (3).

5. The pulsation detection device for an ultrasonic gas meter according to claim 1, characterized in that: A temperature sensor is installed on the outside of the pipeline between the fan (2) and the control display (3), and a wire is connected between the temperature sensor and the control display (3).

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