Flow detection device

Abstract

The utility model belongs to the technical field of gas water heater detection, and discloses a flow detection device which comprises a gas inlet connector and a flow tester. The air inlet connector is provided with an air channel, an air outlet communicated with the air channel, an air inlet hole and an air outlet hole, the inner diameter of the air outlet is larger than that of the air outlet hole, and the air inlet connector can abut against the air inlet block so that the air channel of the air inlet connector can be communicated with the air injection channel. The air outlet end of the flow tester is communicated with the air inlet hole in the air inlet connector, and the air return end of the flow tester is communicated with the air outlet hole in the air inlet connector. According to the flow detection device, gas output by the flow tester enters the gas channel through the gas inlet hole of the gas inlet connector, so that one part of gas can enter the gas injection channel, the other part of gas can flow back to the flow tester through the gas outlet hole of the gas inlet connector, and the gas flow of the gas output by the gas injection channel is obtained; therefore, whether the thermal load of the gas ejector pipe assembly meets the requirement is judged, the detection operation process is simple, and the efficiency is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas water heater detection technical field especially relates to a flow detection device. BACKGROUND

[0002] The jet pipe assembly is used in the gas water heater and has the function of distributing gas. The jet pipe assembly comprises a main plate and an air inlet block arranged on the main plate. The upper end of the main plate is provided with a plurality of nozzles. The nozzles are provided with a jet hole. The lower end of the main plate is provided with a cavity in communication with the jet hole. The air inlet block is provided with a jet passage in communication with the cavity. Different numbers of nozzles are communicated with different cavities by setting different cavities to form different gas paths, thereby obtaining different heat loads. Among them, the gas flow plays a key role in whether the heat load performance of the gas water heater meets the standard, that is, the gas flow of the jet pipe assembly is a direct influencing factor of the heat load of the whole machine.

[0003] In order to ensure the qualified rate of the heat load of the gas water heater, in the prior art, the hole diameter of the jet hole is detected and judged whether it meets the drawing requirement one by one to detect whether the corresponding heat load meets the requirement. This detection method is complicated and low in efficiency. UTILITY MODEL CONTENTS

[0004] The problem to be solved by the utility model is to provide a flow detection device which can effectively solve the problems of complicated and low efficiency of gas flow detection of the jet pipe assembly.

[0005] The above problems are solved by the following technical solutions:

[0006] The flow detection device is used for detecting the gas flow of the jet pipe assembly. The jet pipe assembly is provided with an air inlet block. The air inlet block is provided with a jet passage.

[0007] The flow detection device comprises:

[0008] The air inlet connector is internally provided with an air passage, an air outlet, an air outlet hole and an air inlet hole in communication with the air passage respectively. The inner diameter of the air outlet is larger than that of the air outlet hole. The air inlet connector is used for pressing on the air inlet block so that the air passage is in communication with the jet passage through the air outlet.

[0009] The flow tester is in communication with the air inlet hole on the air inlet connector at the air outlet end, and the air outlet hole on the air inlet connector at the air return end.

[0010] Compared with the background technology, the flow detection device has the beneficial effects that:

[0011] The flow detection device provided by the utility model, the gas output by the gas outlet end of the flow tester enters the air channel through the air inlet hole of the air inlet joint, the inner diameter of the gas outlet is large, and the gas is more likely to flow to the gas outlet, so that most of the gas can enter the air jet channel, and the other part of the gas can flow back to the flow tester through the gas outlet hole of the air inlet joint, the flow tester can detect the gas difference between the gas outlet end and the air return end, obtain the gas flow of the gas output into the air jet channel, and determine whether the heat load of the air jet pipe assembly meets the requirements, the detection operation process is simple, and the efficiency is high.

[0012] In one of the embodiments, the distance from the air inlet hole to the gas outlet is less than the distance from the air outlet hole to the gas outlet.

[0013] In one of the embodiments, the air inlet joint is provided with an extension part at one end of the air inlet block, the gas outlet penetrates through the extension part, the extension part is sleeved with a flexible ring, and the flexible ring can be pressed against the air inlet block.

[0014] In one of the embodiments, the air inlet joint is provided with an extension part at one end of the air inlet block, the gas outlet penetrates through the extension part, the extension part is sleeved with a flexible ring, and the flexible ring can be pressed against the air inlet block.

[0015] In one of the embodiments, the driving member is a pneumatic cylinder, a hydraulic cylinder or an electric cylinder.

[0016] The end of the output rod of the driving member is threadedly connected to one end of the air inlet joint, away from the gas outlet.

[0017] In one of the embodiments, the rack comprises a bottom plate, a vertical plate and a top plate, two vertical plates are arranged on the bottom plate, the top plate is arranged on the two vertical plates, and the driving member is arranged on the top plate.

[0018] In one of the embodiments, a plurality of air inlet joints are arranged, the plurality of air inlet joints are arranged at intervals, and the driving member is arranged in one-to-one correspondence with the air inlet joints.

[0019] In one of the embodiments, the rack is provided with a positioning mechanism, the air jet pipe assembly is placed on the positioning mechanism, and the positioning mechanism is used for positioning the air jet pipe assembly.

[0020] In one of the embodiments, the positioning mechanism comprises a support, one of the support and the air jet pipe assembly is provided with a plurality of positioning columns, and the other is provided with a plurality of positioning holes in one-to-one correspondence with the positioning columns, the air jet pipe assembly is supported on the support, and the plurality of positioning columns can be respectively inserted into the plurality of positioning holes.

[0021] In one of the embodiments, the support comprises two support plates arranged on the frame body, and each of the support plates is provided with at least two positioning columns. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structural schematic view of a flow detection device provided by an embodiment of the present application;

[0023] Figure 2 is a structural schematic view of a gas inlet connector according to an embodiment of the present application;

[0024] Figure 3 is a structural schematic view of a frame body according to an embodiment of the present application;

[0025] Figure 4 is a structural schematic view of a gas jet pipe assembly according to an embodiment of the present application.

[0026] In the drawings:

[0027] 100, gas jet pipe assembly; 101, gas inlet block; 1011, gas jet channel; 102, main plate; 1021, nozzle; 1022, positioning hole;

[0028] 1, frame body; 11, bottom plate; 12, vertical plate; 13, top plate; 14, positioning mechanism; 141, support; 1411, support plate; 1412, connecting plate; 142, positioning column;

[0029] 2, gas inlet connector; 21, gas outlet; 22, gas outlet hole; 23, gas inlet hole; 24, extension; 25, flexible collar;

[0030] 3, driving member. DETAILED DESCRIPTION

[0031] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar notations represent the same or similar parts or parts having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0032] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0033] In the description of the utility model, unless another explicit provision and limitation, first feature is in second feature "on" or "under" can include first feature and second feature direct contact, also can include first feature and second feature is not direct contact but is through the contact between other features between them. Moreover, first feature is in second feature "on", "above" and "on" include first feature is directly above and obliquely above second feature, or just indicate that first feature horizontal height is higher than second feature. First feature is in second feature "under", "below" and "under" include first feature is directly below and obliquely below second feature, or just indicate that first feature horizontal height is less than second feature.

[0034] The technical scheme of the utility model is further illustrated below by specific implementation manners in combination with the drawings.

[0035] As Figures 1-2 The utility model discloses a flow detection device for detecting the gas flow of the jet pipe assembly 100 in the gas water heater or heating stove, to ensure that the heat load of the jet pipe assembly 100 meets the requirements. The jet pipe assembly 100 comprises a main plate 102 and an air inlet block 101 arranged on the main plate 102, a plurality of nozzles 1021 are arranged at the upper end of the main plate 102, the nozzles 1021 are provided with jet holes, a cavity is arranged at the lower end of the main plate 102 and is communicated with the jet holes, the air inlet block 101 is provided with a jet channel 1011 communicated with the cavity, and the gas can enter the cavity through the jet channel 1011 and be burned and sprayed out through the jet holes of the nozzles 1021.

[0036] The flow detection device comprises an air inlet joint 2 and a flow tester. The air inlet joint 2 is arranged in correspondence with the jet channel 1011, an air channel is arranged in the air inlet joint 2, and an air outlet 21, an air outlet hole 22 and an air inlet hole 23 communicated with the air channel are arranged in the air inlet joint 2, the inner diameter of the air outlet 21 is larger than that of the air outlet hole 22, and the air inlet joint 2 can be pressed on the air inlet block 101, so that the air channel of the air inlet joint 2 is communicated with the jet channel 1011 through the air outlet 21. The air outlet end of the flow tester is communicated with the air inlet hole 23 on the air inlet joint 2, and the air return end of the flow tester is communicated with the air outlet hole 22 on the air inlet joint 2.

[0037] In the air flow test of the jet pipe assembly 100, first, the air outlet 21 of the air inlet joint 2 is communicated with the jet channel 1011, then the air outlet of the flow tester outputs gas, the gas output by the flow tester enters the air passage through the air inlet hole 23, and due to the fact that the inner diameter of the air outlet 21 is greater than the inner diameter of the air outlet hole 22, most of the gas enters the cavity of the main plate 102 through the jet channel 1011 of the air outlet 21, and then is sprayed through the jet hole of the nozzle 1021, and the other part of the gas flows back to the flow tester through the air outlet hole 22. The flow tester detects the difference between the gas at the air outlet end and the air return end, that is, the air flow of the jet pipe assembly 100.

[0038] The flow detection device can make most of the gas enter the jet channel 1011 through the air outlet 21 by outputting the gas of the flow tester into the air passage through the air inlet hole 23 of the air inlet joint 2, and the other small part of the gas can flow back to the flow tester through the air outlet hole 22 of the air inlet joint 2, so that the flow tester can obtain the air flow of the gas output into the jet channel 1011 by detecting the difference between the gas at the air outlet end and the air return end, and further judge whether the heat load of the corresponding air circuit of the jet pipe assembly 100 meets the requirements by detecting whether the air flow meets the corresponding heat load requirements. The detection operation process is simple and efficient.

[0039] Optionally, the distance from the air outlet hole 22 to the air outlet 21 is less than the distance from the air inlet hole 23 to the air outlet 21, which can reduce the detection error.

[0040] Optionally, the flow detection device further comprises a frame body 1 and a driving member 3 corresponding to the air inlet joint 2, the driving member 3 is arranged on the frame body 1, and the air inlet joint 2 is arranged on the output end of the driving member 3. During detection, the driving member 3 can drive the air inlet joint 2 to press against the air inlet block 101, and after detection is completed, the driving member 3 can be controlled to drive the air inlet joint 2 away from the air inlet block 101, so as to facilitate the removal of the jet pipe assembly 100. By arranging the driving member 3, the driving member 3 can control the air inlet joint 2 to press against or move away from the air inlet block 101, and the operation is more convenient.

[0041] In order to prevent gas leakage, an extension 24 is arranged at one end of the air inlet joint 2 which presses against the air inlet block 101, the air outlet 21 penetrates through the extension 24, and the extension 24 is sleeved with a flexible sleeve ring 25. When the driving member 3 drives the air inlet joint 2 to press against the air inlet block 101, the flexible sleeve ring 25 can press against the air inlet block 101. By arranging the flexible sleeve ring 25, the air inlet joint 2 and the air inlet block 101 can be flexibly sealed, so as to prevent gas leakage through the gap between the air inlet joint 2 and the air inlet block 101, and to ensure the accuracy of the detection result.

[0042] Optionally, the flexible sleeve ring 25 can be made of silica gel or rubber.

[0043] Optionally, the driving member 3 can be selected as a pneumatic cylinder, a hydraulic cylinder or an electric cylinder; the air passage penetrates the air inlet joint 2 and is connected to one end of the driving member 3, and the inner wall of the end of the air passage facing the driving member 3 is provided with internal threads; the end of the output rod of the driving member 3 is provided with external threads; and the output rod of the driving member 3 is screwed into the air passage to achieve the connection of the air inlet joint 2 and the driving member 3.

[0044] Optionally, the frame body 1 comprises a bottom plate 11, two vertical plates 12 and a top plate 13; the two vertical plates 12 are arranged on the bottom plate 11 in a spaced manner; the top plate 13 is arranged on the two vertical plates 12; and the driving member 3 is arranged on the top plate 13. The frame body 1 has a simple structure and is convenient to assemble, and can effectively reduce the manufacturing cost.

[0045] In order to prevent the air jet pipe assembly 100 from being displaced when the air inlet joint presses against the air inlet block 101, as shown in Figures 3-4 the bottom plate 11 of the frame body 1 is provided with a positioning mechanism 14, and the main plate 102 of the air jet pipe assembly 100 is arranged on the positioning mechanism 14. The positioning mechanism 14 can position the main plate 102 of the air jet pipe assembly 100 to prevent the air jet pipe assembly 100 from being displaced, so as to avoid the deviation of the relative position between the air outlet 21 and the air jet passage 1011 and the occurrence of inaccurate detection.

[0046] Specifically, the positioning mechanism 14 comprises a support 141 and a plurality of positioning columns 142 arranged on the support 141, and the main plate 102 of the air jet pipe assembly 100 is provided with a plurality of positioning holes 1022 corresponding to the positioning columns 142. When the air jet pipe assembly 100 is detected, the air jet pipe assembly 100 is installed on the positioning mechanism 14, that is, the main plate 102 of the air jet pipe assembly 100 is supported on the support 141, and the plurality of positioning columns 142 can be respectively inserted into the plurality of positioning holes 1022. By arranging the plurality of positioning columns 142 and the plurality of positioning holes 1022 to be inserted and matched, the position deviation of the air jet pipe assembly 100 can be effectively prevented.

[0047] Of course, the support 141 can also be provided with the positioning holes 1022, and the main plate 102 of the air jet pipe assembly 100 can be provided with the positioning columns 142.

[0048] More specifically, the support 141 comprises two support plates 1411 arranged on the bottom plate 11 of the frame body 1 in a spaced manner, and the plurality of positioning columns 142 are divided into two groups, and the two groups of positioning columns 142 are arranged on the two support plates 1411, respectively. The main plate 102 of the air jet pipe assembly 100 can be supported on the two support plates 1411, and the positioning columns 142 on the support plates 1411 can be inserted into the positioning holes 1022. The support 141 has a simple structure, and the operation of installing the air jet pipe assembly 100 on the positioning mechanism 14 is convenient.

[0049] Optionally, at least two positioning columns 142 are arranged on each support plate 1411.

[0050] Optionally, in order to ensure the structural stability of the support 141, the support 141 further comprises a connecting plate 1412 arranged on the bottom plate 11 of the frame body 1 and connected between the two support plates 1411.

[0051] In the embodiment, the air inlet block 101 is provided with two air injection channels 1011, the lower end of the main plate 102 is provided with two cavities, and the nozzles 1021 on the main plate 102 are divided into two groups, one group of nozzles 1021 is communicated with one cavity, and the other group of nozzles 1021 is communicated with the other cavity.

[0052] Optionally, the air inlet connector 2 can be set according to the number of cavities arranged on the main plate 102, when the main plate 102 is provided with multiple cavities, multiple air inlet connectors 2 are arranged, the multiple air inlet connectors 2 are arranged at intervals, and the driving members 3 are correspondingly arranged on the top plate 13 of the frame body 1 at intervals.

[0053] Referring again to Figure 1 It is shown that the air inlet connector 2 and the driving member 3 are both arranged in two, the two driving members 3 are arranged on the top plate 13 of the frame body 1, the two air inlet connectors 2 are arranged on the output ends of the driving members 3, and the two air inlet connectors 2 are correspondingly arranged with the two air injection channels 1011, and the two driving members 3 can alternately drive the two air inlet connectors 2 to press on the air inlet block 101, so that the air outlets 21 of the two air inlet connectors 2 can alternately communicate with the corresponding air injection channels 1011.

[0054] Optionally, the air outlet end of the flow tester alternately communicates with the air inlet holes 23 of the two air inlet connectors 2, and the air return end of the flow tester communicates with the air outlet holes 22 of the two air inlet connectors 2. Optionally, a three-way connector is arranged between the air outlet end of the flow tester and the air inlet holes 23 of the two air inlet connectors 2, and the three-way connector can alternately communicate with the air inlet holes 23 of the two air inlet connectors 2.

[0055] The flow detection device further comprises a controller, when the flow detection device is used to detect the air injection pipe assembly 100, first, the controller controls one driving member 3 to drive one air inlet connector 2 to press on the air inlet block 101, so that the air outlet 21 of the air inlet connector 2 communicates with the corresponding air injection channel 1011, then the flow detector outputs gas, and judges whether the gas flow is qualified, if yes, the controller controls the driving member 3 to drive the air inlet connector 2 away from the air inlet block 101, and controls another driving member 3 to drive another air inlet connector 2 to press on the air inlet block 101, so that the air outlet 21 of the other air inlet connector 2 communicates with the corresponding other air injection channel 1011, then the flow detector outputs gas, and judges whether the gas flow is qualified, if yes, it indicates that the air injection pipe assembly 100 meets the requirements.

[0056] It should be noted that if one of the two air flow detections is unqualified, it indicates that the jet pipe assembly 100 is not designed according to the requirements.

[0057] The flow detection device is also provided with a foolproof function, when the detection is unqualified, the controller controls the detection to be suspended, then the second detection is not entered, and the driving member 3 controls the air inlet joint 2 to continue to press on the air inlet block 101, manual operation is needed to control the driving member 3 to drive the air inlet joint 2 to be away from the air inlet block 101.

[0058] Alternatively, two flow testers can also be arranged, the two flow testers are one-to-one corresponding to the two air inlet joints 2, the air outlet end of the first flow tester is communicated with the air inlet hole 23 on the corresponding air inlet joint 2, the air return end of the first flow tester is communicated with the air outlet hole 22 on the corresponding air inlet joint 2, the air outlet end of the second flow tester is communicated with the air inlet hole 23 on the corresponding air inlet joint 2, and the air return end of the second flow tester is communicated with the air outlet hole 22 on the corresponding air inlet joint 2. By arranging two flow testers to detect the air flow respectively, direct interference between the two air inlet joints 2 can be avoided, and the test accuracy is improved.

[0059] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not the limitation of the embodiments of the utility model. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments are not enumerated. Any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A flow detection device for detecting the air flow of a jet pipe assembly (100), the jet pipe assembly (100) being provided with an air inlet block (101), the air inlet block (101) being provided with a jet passage (1011); characterized in that, the flow detection device comprises: an air inlet connector (2) internally provided with an air channel, and an air outlet (21), an air outlet hole (22) and an air inlet hole (23) respectively communicating with the air channel, the inner diameter of the air outlet (21) being greater than that of the air outlet hole (22), the air inlet connector (2) being used to abut against the air inlet block (101) so that the air channel communicates with the jet passage (1011) through the air outlet (21); a flow tester, the air outlet end of the flow tester communicating with the air inlet hole (23) on the air inlet connector (2), and the air return end of the flow tester communicating with the air outlet hole (22) on the air inlet connector (2).

2. The flow detecting device according to claim 1, wherein The distance from the air outlet hole (22) to the air outlet (21) is less than the distance from the air inlet hole (23) to the air outlet (21).

3. The flow detection device of claim 1, wherein, One end of the air inlet connector (2) abutting against the air inlet block (101) is provided with an extension (24), the air outlet (21) penetrates through the extension (24), the extension (24) is sleeved with a flexible collar (25), and the flexible collar (25) can abut against the air inlet block (101).

4. The flow detection device of claim 1, wherein, Further comprising a frame body (1) and a driving member (3) corresponding to the air inlet connector (2), the air inlet connector (2) being arranged at the output end of the driving member (3), the driving member (3) being arranged on the frame body (1) and capable of driving the air inlet connector (2) to abut against the air inlet block (101).

5. The flow detection device of claim 4, wherein, The driving member (3) is a pneumatic cylinder, a hydraulic cylinder or an electric cylinder. The end of the output rod of the driving member (3) is threadedly connected with one end of the air inlet connector (2) away from the air outlet (21).

6. The flow detection device of claim 4, wherein, The frame body (1) comprises a bottom plate (11), a vertical plate (12) and a top plate (13), two vertical plates (12) are arranged on the bottom plate (11) in a spaced manner, and the top plate (13) is arranged on the two vertical plates (12), and the driving member (3) is arranged on the top plate (13).

7. The flow detection device of claim 4, wherein, A plurality of air inlet connectors (2) are arranged in a spaced manner, and the driving member (3) is arranged in one-to-one correspondence with the air inlet connector (2).

8. The flow detection device of claim 4, wherein, A positioning mechanism (14) is arranged on the frame body (1), the jet pipe assembly (100) is placed on the positioning mechanism (14), and the positioning mechanism (14) is used for positioning the jet pipe assembly (100).

9. The flow detection device of claim 8, wherein, The positioning mechanism (14) comprises a support (141), one of which is provided with a plurality of positioning columns (142) and the other of which is provided with a plurality of positioning holes (1022) corresponding to the positioning columns (142) one by one, and the jet pipe assembly (100) is supported on the support (141), and the plurality of positioning columns (142) can be respectively inserted into the plurality of positioning holes (1022).

10. The flow detection device of claim 9, wherein, The support (141) comprises two support plates (1411) which are arranged at intervals on the frame body (1), and each of the support plates (1411) is provided with at least two positioning columns (142).

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