Differential pressure flow detection equipment and system

Abstract

The utility model provides differential pressure flow detection equipment and system, the equipment comprises: a differential pressure flow detection device, the differential pressure flow detection device comprises a differential pressure pipe main body, a screen mesh, a pressure sensor, a heating device and a retainer ring, the differential pressure pipe main body is a hollow tubular structure, the screen mesh is arranged in the differential pressure pipe main body; the check ring is connected with the screen, and the screen is fixed in the differential pressure pipe body. The heating device is arranged on the outer wall of the differential pressure pipe body in a sleeving mode, the distance between the heating device and the screen is a preset distance, and the pressure sensor is connected with the first side of the screen and the second side of the screen. According to the differential pressure flow detection device, the heating device is arranged on the outer wall of the differential pressure pipe body and used for heating the screen in the differential pressure pipe body, the situation that breathing gas in the differential pressure pipe body is condensed on the screen and consequently the screen is blocked is avoided, and the detection precision of the differential pressure flow detection device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical detection technical field especially, relate to a kind of differential pressure flow detection equipment and system. BACKGROUND

[0002] The basic principle of differential pressure flow detection is to measure the flow rate using the pressure difference generated when the fluid flows through the throttling device. In the medical industry, the gas breathed by the user is collected through a central tube, and the throttling device usually selects a metal screen. By detecting the pressure difference before and after the gas breathed by the user passes through the metal screen, the user's respiratory flow rate is calculated, and then the user's asthma level is evaluated according to the respiratory flow rate. However, the humid gas breathed by the user is easy to produce condensate when it contacts the metal screen, which causes the metal screen to be blocked, resulting in inaccurate evaluation results. SUMMARY

[0003] Therefore, the utility model aims to overcome the shortcomings of the prior art, and provides a differential pressure flow detection equipment and system to solve the problem of metal screen blockage caused by condensate in the existing differential pressure detection device.

[0004] The utility model provides the following technical scheme:

[0005] In a first aspect, the present application provides a differential pressure flow detection equipment, comprising:

[0006] The differential pressure flow detection device comprises a differential pressure pipe body, a screen, a pressure sensor, a heating device, and a retaining ring. The differential pressure pipe body is a hollow tubular structure, and the screen is arranged inside the differential pressure pipe body. The retaining ring is connected to the screen to fix the screen inside the differential pressure pipe body. The heating device is sleeved on the outer wall of the differential pressure pipe body, and the distance between the heating device and the screen is a preset distance. The pressure sensor is connected to the first side of the screen and the second side of the screen, respectively.

[0007] In one embodiment, the differential pressure flow detection device further comprises a module box cover. The pressure sensor is arranged in the module box cover, and two hoses are provided in the module box cover. The differential pressure pipe body is provided with two hose through holes, and the screen is arranged at the middle position of the two hose through holes. One end of each hose is connected to the pressure sensor, and the other end of each hose is connected to one of the hose through holes, respectively.

[0008] In one embodiment, the differential pressure flow detection device further comprises a tapered joint. One end of the tapered joint is connected to the hose through hole, and the other end of the tapered joint is connected to the hose.

[0009] In one embodiment, the differential pressure flow detection device further comprises a module box, and a module box cover connected with the module box to form a sealed structure.

[0010] In one embodiment, the module box is provided with a first screw hole, and the outer wall of the differential pressure pipe body is provided with a second screw hole, and the first screw hole and the second screw hole are connected by a screw to connect the module box and the differential pressure pipe body.

[0011] In one embodiment, the differential pressure flow detection device further comprises a differential pressure pipe nut connected with the check ring, and the differential pressure pipe nut is tightened to fix the check ring in the differential pressure pipe body.

[0012] In one embodiment, the differential pressure flow detection device further comprises a test bench, and the test bench comprises an atomizer and a concentration pipe, the atomizer is connected with the concentration pipe, and the concentration pipe is connected with the differential pressure flow detection device.

[0013] In one embodiment, the test bench comprises an adapter and an inner clamping joint, one end of the inner clamping joint is connected with the adapter, the other end of the inner clamping joint is connected with the differential pressure pipe body, and the adapter is connected with the test bench.

[0014] In one embodiment, the differential pressure flow detection device further comprises a joint nut, one end of the joint nut is connected with the inner clamping joint, the other end of the joint nut is connected with the differential pressure pipe body, and the joint nut is tightened to fix the heating device in the differential pressure pipe body.

[0015] In a second aspect, the application provides a differential pressure flow detection system, comprising a trolley and the differential pressure flow detection device according to any one of the first aspect.

[0016] The embodiments of the utility model have the following advantages:

[0017] The differential pressure flow detection device provided by the application comprises a heating device arranged on the outer wall of the differential pressure pipe body, which is used for heating the screen mesh in the differential pressure pipe body, and the heating device is kept at a predetermined distance from the screen mesh, so that the heating effect is better, and the condensation of respiratory gas in the differential pressure pipe body on the screen mesh is avoided, so that the screen mesh is not blocked, and the detection accuracy of the differential pressure flow detection device is improved.

[0018] In order to make the above-mentioned purpose, characteristics and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows, and it should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the premise of not paying creative labor.

[0020] Figure 1 A sectional view of the differential pressure flow detection device provided by the embodiments of the present application is shown;

[0021] Figure 2 An exploded view of the differential pressure flow detection device provided by the embodiments of the present application is shown;

[0022] Figure 3 Another sectional view of the differential pressure flow detection device provided by the embodiments of the present application is shown;

[0023] Figure 4 A test bench structure schematic diagram provided by the embodiments of the present application is shown;

[0024] Figure 5 A structure schematic diagram of the differential pressure flow detection system provided by the embodiments of the present application is shown.

[0025] Main element symbol explanation:

[0026] 100, differential pressure flow detection device; 101, heating device; 102, screen; 103, differential pressure pipe nut; 104, check ring; 105, differential pressure pipe main body; 106, module box; 107, module box cover; 108, pressure sensor; 109, hose; 110, cone joint; 200, test bench; 201, adapter; 202, sealing ring; 203, inner clamp joint; 204, joint nut; 205, atomizer; 206, manifold; 300, trolley; 301, display; 302, computer host; 303, shaker; 304, shaker tube; 305, pressure regulating valve; 306, compressor box. DETAILED DESCRIPTION

[0027] The embodiments of the present application will be described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation on the present application.

[0028] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. As used herein the terms "vertical", "horizontal", "left", "right" and similar terms are used for explanation purposes only.

[0029] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; 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 those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0030] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terms used in the specification of the template herein are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0032] Embodiment 1

[0033] The present embodiment provides a differential pressure flow detection device which can be used for differential pressure flow detection of a user, the detection device comprising: a differential pressure flow detection device 100 and a trolley 300.

[0034] Referring to Figure 1 , Figure 1 A cross-sectional view of a differential pressure flow detection device 100 is provided in the present embodiment.

[0035] As Figure 1As shown, the differential pressure flow detection device 100 mainly comprises a differential pressure pipe body 105, a screen 102, a pressure sensor 108, a heating device 101 and a retaining ring 104, the differential pressure pipe body 105 is a hollow tubular structure, the screen 102 is arranged in the differential pressure pipe body 105, the screen 102 mainly plays a throttling role, the pressure sensor 108 detects the pressure difference before and after the user's breathing gas passes through the screen 102, so as to determine the user's breathing flow.

[0036] The retaining ring 104 is connected with the screen 102, and the screen 102 is fixed in the differential pressure pipe body 105. The retaining ring 104 can be provided with a fixed clamping groove. The screen 102 can be installed in the fixed clamping groove first, and then the retaining ring 104 can be installed in the differential pressure pipe body 105, so as to avoid that the screen 102 is easily slid or falls off during installation.

[0037] The heating device 101 is sleeved on the outer wall of the differential pressure pipe body 105, the distance between the heating device 101 and the screen 102 is a preset distance, and the pressure sensor 108 is connected with the first side of the screen 102 and the second side of the screen 102 respectively.

[0038] The heating device 101 can be a heating ring. In order to improve the heating efficiency, the differential pressure pipe body 105 can be made of aluminum material. The distance between the heating device 101 and the screen 102 should not be too far, otherwise the heating effect will be poor. The distance between the heating device 101 and the screen 102 should not be too close, otherwise the screen 102 may be overheated, which affects the user experience. Therefore, the heating effect of the heating device 101 at different positions can be tested first, so as to determine the distance with the best heating effect as the preset distance.

[0039] Since the pressure sensor 108 needs to detect the pressure difference before and after the breathing gas passes through the screen 102, the pressure sensor 108 must be connected with both sides of the screen 102. The first side can be defined as the side close to the user's breathing interface, and the second side can be defined as the side far from the user's breathing interface. That is, after the user's breathing gas passes through the breathing interface, it first passes through the first side, then passes through the screen 102, and finally passes through the second side. Thus, the pressure sensor 108 can correctly test the pressure difference between the two sides of the screen 102.

[0040] Referring to Figure 2 , Figure 2 An exploded view of the differential pressure flow detection device 100 provided in the embodiment is shown.

[0041] As Figure 2As shown, the differential pressure flow detection device 100 further comprises a module box cover 107, and the pressure sensor 108 is arranged in the module box 106. The pressure sensor 108 is arranged in the module box cover 107, so that the pressure sensor 108 is convenient to disassemble and replace, and if arranged in the differential pressure flow detection device 100, it will cause very complex disassembly.

[0042] The module box 106 is provided with two hoses 109, the differential pressure pipe body 105 is provided with two hose 109 through holes, the screen 102 is arranged at the middle position of the two hose 109 through holes, one end of each hose 109 is connected with the pressure sensor 108, and the other end of each hose 109 is connected with one of the hose 109 through holes respectively.

[0043] The pressure sensor 108 is directly arranged in the differential pressure pipe body 105, which may affect the gas flow in the differential pressure pipe body 105, therefore, in order to better realize the differential pressure detection of the screen 102, two hoses 109 are arranged to connect the areas on both sides of the screen 102 respectively, and then connected with the pressure sensor 108, so as to realize the differential pressure detection.

[0044] As shown in the Figure 2 , the differential pressure flow detection device 100 further comprises a nipple 110, one end of the nipple 110 is connected with the hose 109 through hole, and the other end of the nipple 110 is connected with the hose 109.

[0045] In order to better connect the hose 109 with the through hole and avoid loosening of the hose 109, the nipple 110 is used to connect the hose 109 with the hose 109 through hole, the nipple 110 is hollow, one end of which is connected with the hose 109 through hole, and the other end of which is connected with the hose 109. The structure of the hose 109 is divided into two sections with different outer diameters, one end with larger outer diameter is connected with the nipple 110 to realize sealed butt joint and is not easy to loosen during plugging and unplugging, and the other end with smaller outer diameter is connected with the pressure sensor 108 to realize differential pressure detection.

[0046] Referring to Figure 3 , Figure 3 Another cross-sectional view of the differential pressure flow detection device 100 provided in the embodiment.

[0047] The differential pressure flow detection device 100 further comprises a module box 106, and the module box cover 107 is connected with the module box 106 to form a sealed structure. The sealed structure can protect the safety of devices such as the pressure sensor 108 and the hose 109, and can also realize isolation from the external environment. The module box 106 and the module box cover 107 can also be fixed by screws.

[0048] The module box 106 is provided with a first screw hole, and the outer wall of the differential pressure pipe body 105 is provided with a second screw hole, the first screw hole is connected with the second screw hole through a screw, so as to connect the module box 106 with the differential pressure pipe body 105.

[0049] Since the pressure sensor 108 needs to detect the pressure difference in the differential pressure pipe body 105, the distance between the pressure sensor 108 and the differential pressure pipe body 105 should not be too far. The module box 106, the module box cover 107 and the differential pressure pipe body 105 are fixed together through the screw hole and the screw, so as to facilitate the differential pressure flow detection. Moreover, through the screw hole and the screw connection, it is also convenient to disassemble.

[0050] In an embodiment, the differential pressure flow detection device 100 further comprises a differential pressure pipe nut 103, the differential pressure pipe nut 103 is connected with the check ring 104, and the differential pressure pipe nut 103 is tightened to fix the check ring 104 in the differential pressure pipe body 105.

[0051] The differential pressure pipe nut 103 is arranged at one end of the user's breath, and is used to fix the check ring 104 in the differential pressure pipe body 105, so as to fix the screen 102, and avoid the direct contact between the differential pressure pipe nut 103 and the screen 102, thereby avoiding damaging the screen 102.

[0052] Referring to Figure 4 , Figure 4 The test bench 200 provided in the embodiment is shown in a structural schematic view.

[0053] The differential pressure flow detection device further comprises a test bench 200, the test bench 200 comprises an atomizer 205 and a concentration pipe 206, the atomizer 205 is connected with the concentration pipe 206, and the concentration pipe 206 is connected with the differential pressure flow detection device 100.

[0054] The atomizer 205 inputs the atomized gas for differential pressure flow detection into the concentration pipe 206, the user bites one end of the concentration pipe 206, inhales the atomized gas, and then exhales, the exhaled gas passes through the concentration pipe 206 to the differential pressure flow detection device 100, so as to realize the differential pressure flow detection.

[0055] In an embodiment, the test bench 200 comprises an adapter 201 and an inner card joint 203, one end of the inner card joint 203 is connected with the adapter 201, the other end of the inner card joint 203 is connected with the differential pressure pipe body 105, and the adapter 201 is connected with the test bench 200.

[0056] As Figure 4As shown, the inner adapter is connected to the adapter 201, and the adapter 201 is connected to the test bench 200. In order to improve the accuracy of the differential pressure flow detection, the inner adapter 203, the differential pressure flow detection device 100 and the concentration pipe 206 are usually installed on the same straight line, so that the user's respiratory gas flow is not hindered.

[0057] As shown in the figure, the inner adapter 203 and the adapter 201 can also be provided with a sealing ring 202 in the middle, which can avoid the existence of gaps between the inner adapter 203 and the adapter 201, thereby preventing gas leakage. Figure 1

[0058] In one embodiment, the differential pressure flow detection device further comprises an adapter nut 204, one end of the adapter nut 204 is connected to the inner adapter 203, and the other end of the adapter nut 204 is connected to the differential pressure pipe body 105. When the adapter nut 204 is tightened, the heating device 101 is fixed in the differential pressure pipe body 105.

[0059] The outer side of the inner adapter 203 can be a threaded structure, and the side connected to the trolley 300 of the differential pressure flow detection device 100 can also be provided with a threaded structure. The adapter nut 204 is connected to the threaded structures of the inner adapter 203 and the differential pressure flow detection device 100 respectively, thereby connecting the differential pressure flow detection device 100 and the inner adapter 203, and fixing the retaining ring 104 in the differential pressure flow detection device 100.

[0060] The differential pressure flow detection device provided by the embodiment can heat the screen 102 in the differential pressure pipe body 105 by arranging a heating device 101 on the outer wall of the differential pressure pipe body 105. The heating device 101 and the screen 102 are kept at a predetermined distance, so that the heating effect is better. The respiratory gas in the differential pressure pipe body 105 is prevented from condensing on the screen 102, thereby preventing the screen 102 from being blocked, and improving the detection accuracy of the differential pressure flow detection device.

[0061] Referring to Figure 5 The embodiment also provides a differential pressure flow detection system, which comprises a trolley 300 and the differential pressure flow detection device described in the above embodiment, and the differential pressure flow detection device is installed on the trolley 300.

[0062] The trolley 300 further comprises a display 301, a computer host 302, a shaker 303, a shaker pipe 304, a pressure regulating valve 305 and a compressor box 306.

[0063] The detection process of the detection system mainly includes:

[0064] ​First, the disposable mouthpiece is connected to the manifold 206, the user bites the disposable mouthpiece, starts the machine, the compressor and the oscillation tank work simultaneously, the compressor generates compressed air which is delivered to the atomizer 205 through the pressure regulating valve 305, the drug in the atomizer 205 is atomized, the atomized drug flows into the manifold 206, the oscillation tank generates a periodic sinusoidal airflow, which pushes the atomized drug forward, and the user can inhale the atomized gas when breathing normally.

[0065] The atomizer 205 is provided with a plurality of, usually 12, one of which is physiological saline, one is a dilator, and the remaining 10 are excitants with increasing concentrations, which are used to excite bronchial contraction, the differential pressure flow detection device 100 continuously monitors the change of oscillation flow rate, calculates the user's respiratory resistance according to the change of flow rate, and when the user inhales a certain amount of excitation, the bronchial contraction increases, and the asthma symptoms appear, at this time, the operation device is switched to the dilator to dilate the bronchus; the doctor evaluates the degree of asthma according to the concentration of the excitation, the respiratory resistance, the clinical response, etc.

[0066] The computer host 302 is used to control and process data of the detection system, and the display 301 is used to display the detection results and other data.

[0067] In all the examples shown and described herein, any specific values should be interpreted as merely exemplary and not as a limitation, and thus, other examples of the example embodiments can have different values.

[0068] It should be noted that similar reference numbers and letters represent similar items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0069] The above-described embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application.

Claims

1. A differential pressure flow detection device, characterized by, include: A differential pressure flow detection device includes a differential pressure tube body, a screen, a pressure sensor, a heating device, and a retaining ring. The differential pressure tube body is a hollow tubular structure, and the screen is disposed inside the differential pressure tube body. The retaining ring is connected to the screen to fix the screen inside the differential pressure tube body. The heating device is sleeved on the outer wall of the differential pressure tube body, and the distance between the heating device and the screen is a preset distance. The pressure sensor is connected to a first side and a second side of the screen.

2. The differential pressure flow sensing apparatus of claim 1, wherein, The differential pressure flow detection device further includes: a module cover, the pressure sensor is disposed inside the module cover, the module cover is provided with two hoses, the differential pressure tube body is provided with two hose through holes, the screen is disposed in the middle of the two hose through holes, one end of each hose is connected to the pressure sensor, and the other end of each hose is respectively connected to one hose through hole.

3. The differential pressure flow sensing apparatus of claim 2, wherein, The differential pressure flow detection device further includes a pagoda connector, one end of which is connected to the through hole of the flexible hose, and the other end of which is connected to the flexible hose.

4. The differential pressure flow sensing apparatus of claim 2, wherein, The differential pressure flow detection device further includes a module box, and the module box cover is connected to the module box to form a sealed structure.

5. The differential pressure flow sensing apparatus of claim 4, wherein, The module box is provided with a first screw hole, and the outer wall of the differential pressure tube body is provided with a second screw hole. The first screw hole and the second screw hole are connected by screws to connect the module box and the differential pressure tube body.

6. The differential pressure flow sensing apparatus of claim 1, wherein, The differential pressure flow detection device further includes: a differential pressure tube nut, which is connected to the retaining ring. When the differential pressure tube nut is tightened, the retaining ring is fixed inside the differential pressure tube body.

7. The differential pressure flow sensing apparatus of claim 1, wherein, The differential pressure flow detection device also includes a test bench, which includes an atomizer and a central tube. The atomizer is connected to the central tube, and the central tube is connected to the differential pressure flow detection device.

8. The differential pressure flow sensing apparatus of claim 7, wherein, The test bench includes an adapter and an inner clamping connector. One end of the inner clamping connector is connected to the adapter, and the other end of the inner clamping connector is connected to the differential pressure tube body. The adapter is connected to the test bench.

9. The differential pressure flow sensing device of claim 8, wherein, The differential pressure flow detection device further includes: a connector nut, one end of which is connected to the inner clamp connector, and the other end of which is connected to the differential pressure tube body. When the connector nut is tightened, the heating device is fixed inside the differential pressure tube body.

10. A differential pressure flow detection system characterized by, include: The trolley, and the differential pressure flow detection device as described in any one of claims 1-9, wherein the differential pressure flow detection device is mounted on the trolley.

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