A pressure tank and elastic film damage detection device

Abstract

The present application provides a pressure tank and an elastic film damage detection device, wherein the shell has a conductive structure, the elastic film has a fixed edge, the fixed edge is fixed above the water inlet, so as to divide the inner cavity of the pressure tank into a first space for storing gas and a second space for storing water, and when water is transported to or output from the second space, the first space and the second space have a variable pressure difference; the conductive structure is used as a first electrode in the elastic film damage detection device, the first electrode can contact with the water in the first space, and the second electrode in the elastic film damage detection device can contact with the water flowing outside the pressure tank, so as to judge whether the elastic film is damaged based on whether the first electrode and the second electrode are connected.

Description

Technical Field

[0001] The present application relates to the field of water supply technology, and in particular to a pressure tank and an elastic film damage detection device. Background Art

[0002] During the pressure tank process, if the elastic film is damaged, water will enter the air chamber at the point of damage, causing the air in the air chamber to dissolve into the water, thereby contaminating the water. In addition, the presence of water in the air chamber will also breed bacteria. In addition, more seriously, the pressure tank will lose its normal water storage function.

[0003] To this end, in the existing solutions, a hole is usually opened on the pressure tank, and a fault detection sensor is placed in the hole. The fault detection sensor is connected to the air chamber to detect whether there is water in the air chamber through the damaged point on the elastic film. However, this method requires opening a hole in the pressure tank, which will destroy the structural integrity of the shell; the presence of the hole in the shell will cause the pressure difference between the first space and the second space to be too large, thereby causing the elastic film to be overstretched, resulting in gas leakage and the rupture and failure of the elastic film; if the elastic film is overstretched and contacts the accessories on the shell, it will cause damage to the elastic film. Utility Model Content

[0004] The purpose of the present application is to provide a pressure tank and elastic film damage detection device to solve or alleviate the problems existing in the above-mentioned prior art.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] A pressure tank comprising:

[0007] A shell, an elastic film, and a water inlet, wherein the shell has a conductive structure, the elastic film has a fixed edge, and the fixed edge is fixed above the water inlet to divide the inner cavity of the pressure tank into a first space for storing gas and a second space for storing water, and when water is transported to or output from the second space, the first space and the second space have a variable pressure difference;

[0008] The pressure tank is connected to a water pump through a water inlet channel, the water inlet is connected to the water inlet channel, and the second space is connected to a water outlet channel, so that when the water pump is working, water is input into the second space through the variable pressure difference, or, when the pressure tank needs to supply water, the water stored in the second space is output through the water outlet channel through the variable pressure difference;

[0009] The conductive structure is used as the first electrode in the elastic film damage detection device, and the first electrode can contact the water in the first space. The second electrode in the elastic film damage detection device can contact the water flowing outside the pressure tank, so as to judge whether the elastic film is damaged based on whether the first electrode and the second electrode are connected.

[0010] A device for detecting damage of an elastic film, which is applied to the pressure tank described in any one of the embodiments of the present application, and the device for detecting damage of the elastic film comprises: a first electrode and a second electrode, wherein the first electrode is a conductive structure possessed by the shell of the pressure tank and can contact the water in the first space, and the second electrode can contact the water flowing outside the pressure tank, so as to judge whether the elastic film is damaged based on whether the first electrode and the second electrode are connected. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The drawings constituting part of the present application are used to provide a further understanding of the present application. The exemplary embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. Among them:

[0012] Figure 1 A schematic diagram of the water supply system structure provided in an embodiment of the present application.

[0013] Figure 2 It is a schematic diagram of a pressure tank according to an embodiment of the present application.

[0014] Figure 3 It is a schematic diagram of a pressure tank according to an embodiment of the present application. DETAILED DESCRIPTION

[0015] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. Each example is provided by way of explanation of the present application and does not limit the present application. In fact, it will be clear to those skilled in the art that modifications and variations may be made in the present application without departing from the scope or spirit of the present application. For example, a feature shown or described as a part of an embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desired that the present application includes such modifications and variations within the scope of the appended claims and their equivalents.

[0016] In the description of this application, the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and do not require that this application must be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this application. The terms "connected", "connected", and "set" used in this application should be understood in a broad sense. For example, they can be fixed connections or detachable connections; they can be directly connected or indirectly connected through intermediate components. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0017] Figure 1 A schematic diagram of the water supply system structure provided in an embodiment of the present application. Figure 2 It is a schematic diagram of a pressure tank according to an embodiment of the present application. Figure 3 This is a schematic diagram of a pressure tank according to an embodiment of the present application. Figure 1 As shown, the water supply system includes: a water pump 1, a pressure tank 2, an elastic film damage detection device 3, a water inlet channel 4, and a water outlet channel 5.

[0018] like Figure 2-3 As shown, the pressure tank 2 includes a shell 21, an elastic film 22, and a water inlet 23. The shell 21 has a conductive structure, and the elastic film 22 has a fixed edge, which is fixed above the water inlet 23 to divide the inner cavity of the pressure tank into a first space S1 for storing gas and a second space S2 for storing water. When water is transported to or output from the second space S2, the first space S1 and the second space S2 have a variable pressure difference. The elastic film 22 is made of an insulating material, such as EPDM (Ethylene Propylene Diene Monomer, referred to as ethylene propylene rubber) or butyl rubber.

[0019] The water pump 1 and the pressure tank 2 are connected through the water inlet channel 4, the water inlet channel 4 is connected to the water inlet 23, and the water outlet channel 5 is connected to the second space S2, so that when the water pump 1 is working, water is input into the second space S2 through the variable pressure difference, or, when the pressure tank 2 needs to supply water, the water stored in the second space S2 is output through the water outlet channel 5 through the variable pressure difference.

[0020] like Figure 1As shown, the elastic film damage detection device 3 includes a first electrode 31 and a second electrode 32. The first electrode 31 is the conductive structure and can contact the water in the first space S1. The second electrode 32 can contact the water flowing outside the pressure tank to determine whether the elastic film 22 is damaged based on whether the first electrode 31 and the second electrode 32 are connected.

[0021] Optionally, at least part of the shell 21 is made of conductive material to form the conductive structure, so as to form an electrical connection with the first space S1 when water exists in the first space S1. For this reason, it is not necessary to make a hole in the shell 21, thereby avoiding at least one of the following situations: destroying the structural integrity of the shell 21; due to the hole in the shell 21, the pressure difference between the first space S1 and the second space S2 is too large, resulting in excessive stretching of the elastic film 22, causing gas leakage and rupture and failure of the elastic film; the elastic film 22 is overstretched and contacts the attachment on the shell 21, causing damage to the elastic film 22.

[0022] Optionally, other parts of the shell 21 except the conductive material may be made of plastic, so as to avoid condensed water on the shell 21 causing the first electrode 31 and the second electrode 32 to be incorrectly connected, thereby preventing the elastic film 22 from being incorrectly determined to be damaged.

[0023] Optionally, the water supply system may further include a cover made of a non-conductive material to cover the housing 21 to avoid misconnection between the first electrode 31 and the second electrode 32 .

[0024] Alternatively, other shielding structures may also be used to avoid misconnection between the first electrode 31 and the second electrode 32 .

[0025] Optionally, the second electrode 32 may be in continuous contact with water flowing in at least one of the water inlet channel 4 , the water outlet channel 5 , and the water pump 1 .

[0026] Since there is water in the second space S2, and the water comes from the water inlet channel 4, or is driven by the water pump 1 to be input into the water inlet channel 4, or flows out from the water outlet channel 5. For this reason, the second electrode 32 contacts the water flowing in at least one of the water inlet channel 4, the water outlet channel 5, and the water pump 1. When water also exists in the first space S1 due to the damage of the elastic film, the first electrode 31 forms an electrical connection with the water, and the water in the first space S1 forms an electrical connection with the water flowing in at least one of the water inlet channel 4, the water outlet channel 5, and the water pump 1, and further, the first electrode 31 and the second electrode 32 can be connected. On the contrary, when the elastic film 22 is not damaged, there is no water in the first space S1, and the first electrode 31 and the second electrode 32 are disconnected.

[0027] Optionally, the second electrode 32 is at least one of the water inlet channel 4, the water outlet channel 5, the water pump 1, a structural component provided on the water inlet channel 4, a structural component on the water outlet channel 5, and a structural component on the water pump 1, wherein the structural component can contact the water flowing outside the pressure tank.

[0028] The water inlet channel 4, the water outlet channel 5, and the water pump 1 can be in contact with the water flowing outside the pressure tank, so the second electrode 32 can be directly selected from them. Considering that in actual applications, in order to facilitate the control or management of the water supply system, other structural parts will be set on the water inlet channel 4, the water outlet channel 5, and the water pump 1. If the structural part can also be in continuous contact with the water flowing in the water inlet channel 4, the water outlet channel 5, and the water pump 1, it can also serve as the second electrode 32.

[0029] Optionally, the structural component includes at least one of a valve 61 , a pressure gauge, and a pipe fitting 62 .

[0030] In addition, the second electrode may also be other structures that are in continuous contact with water, such as a pressure box or a metal pump body of a water pump.

[0031] Here, the second electrode is merely an exemplary description and is not intended to be the only limitation.

[0032] In the present application, since the second electrode is directly selected from the existing structure in the water supply system, the structural design is simplified and the cost is reduced.

[0033] Here, it should be noted that the number of the above-mentioned first electrodes 31 and second electrodes 32 is not limited to uniqueness, and can be a one-to-one relationship, a one-to-many relationship, or a many-to-many relationship. As long as there is damage to the elastic film in the first space S1, resulting in the presence of water in the first space S1, further connectivity is formed between at least one of the first electrodes 31 and at least one of the second electrodes 32, so that the damage of the elastic film 22 can be detected.

[0034] Optionally, if a gap is formed between the shell 21 and the water inlet 23 when the fixed edge is fixed above the water inlet 23, the system also includes: an insulating sealing structure 5, and the insulating sealing structure 5 is used to seal the gap to shield the water flowing through the water inlet 23 or the conductive liquid in the external environment from entering the first space S1 through the gap.

[0035] Therefore, based on the above-mentioned insulating sealing structure 5, it is avoided that the first electrode 31 and the second electrode 32 are mistakenly connected due to the water through the water inlet 23 or the conductive liquid in the external environment (such as rainwater or other liquid in the external environment) entering the first space S1 through the above-mentioned gap, resulting in the erroneous judgment that the elastic film 22 is damaged. However, in fact, this kind of mistaken connection is not caused by the water leaking into the first space S1 due to the damage of the elastic film, which causes the connection between the first electrode 31 and the second electrode 32.

[0036] Optionally, the insulating sealing structure 5 is a connecting plate structure, which extends from the water inlet 23 to the shell 21 to form an extrusion 6 on the fixed edge to fix the fixed edge above the water inlet 23 and seal the gap.

[0037] Optionally, a through hole is opened on the connection disk structure, and the water inlet 23 passes through the connection disk structure through the through hole, so as to transport water to the second space S2 through the water inlet 23 .

[0038] Optionally, the connection plate structure blocks the pressure tank 2 , and the water inlet 23 is formed on the connection plate structure, so that water is transported to the second space S2 through the water inlet 23 .

[0039] Optionally, the water outlet channel 5 is also connected to at least one of the water inlet 23 and the water inlet channel 4, so that when water needs to be supplied by the pressure tank 2, the water stored in the second space S2 can be output through the water inlet 23 and the water outlet channel 5 through the variable pressure difference.

[0040] To this end, the water inlet 23 is reused as the water outlet, so that the pressure tank 2 only needs to be provided with one inlet. However, in some other application scenarios, an outlet can also be separately provided on the pressure tank 2, and the outlet is connected to the water outlet channel 5 to transport the water in the pressure tank 2 to the outside.

[0041] Here, when water is transported outward through the water inlet 23 and the water outlet channel 5, the pressure difference generally changes from large to small, and when water is transported to the pressure pump through the water inlet 23 and the water inlet channel 4, the pressure difference generally changes from small to large until the pressure difference reaches the set state, which ensures that the water can be transported to the pressure pump and that the elastic film 22 will not be damaged by excessive expansion.

[0042] Optionally, the elastic film damage detection device 3 also includes: a detection circuit 33, a power supply and a switch module, the power supply is electrically connected to the switch module, and the switch module is electrically connected to the first electrode 31 and the second electrode 32 respectively, so as to generate a characteristic variable detection signal based on whether the first electrode 31 and the second electrode 32 are connected, and the detection signal is used to determine whether the elastic film 22 is damaged.

[0043] For example, when the first electrode 31 and the second electrode 32 are connected, the switch module is in a first state, and a detection signal with a first characteristic is generated based on the first state. When the first electrode 31 and the second electrode 32 are disconnected, the switch module is in a second state, which is different from the first state, and a detection signal with a second characteristic is generated based on the second state, which is different from the first characteristic. If the detection signal changes from the second characteristic to the first characteristic, it is determined whether the elastic film 22 is damaged.

[0044] Specifically, for example, the first state is that the switch module is in a closed state, and the second state is that the switch module is in an open state. Therefore, the first feature is that the detection signal corresponds to a high level, and the second feature is that the detection signal corresponds to a low level.

[0045] In the above embodiment, the water inlet channel 4 includes various possible structural components that enable the water pump 1 to transport water to the pressure tank, such as the water inlet pipe and the valve 61 and metering device provided on the water inlet pipe, and the water outlet channel 5 includes various possible structural components that enable the water in the pressure tank or the water transported by the water pump 1 to be provided to the demanding equipment, such as the water outlet pipe and the valve 61 and metering device provided on the water inlet pipe.

[0046] In addition, in the above embodiments, the pressure tank 2 is placed in the up-down direction when in use. However, in other embodiments, the pressure tank 2 can be placed in the left-right direction according to the needs of the application scenario.

[0047] The present application also provides a pressure tank separately, which may include:

[0048] A shell, an elastic film, and a water inlet, wherein the shell has a conductive structure, the elastic film has a fixed edge, and the fixed edge is fixed above the water inlet to divide the inner cavity of the pressure tank into a first space for storing gas and a second space for storing water, and when water is transported to or output from the second space, the first space and the second space have a variable pressure difference;

[0049] The pressure tank is connected to a water pump through a water inlet channel, the water inlet is connected to the water inlet channel, and the second space is connected to a water outlet channel, so that when the water pump is working, water is input into the second space through the variable pressure difference, or, when the pressure tank needs to supply water, the water stored in the second space is output through the water outlet channel through the variable pressure difference;

[0050] The conductive structure is used as the first electrode in the elastic film damage detection device, and the first electrode can contact the water in the first space. The second electrode in the elastic film damage detection device can contact the water flowing outside the pressure tank, so as to judge whether the elastic film is damaged based on whether the first electrode and the second electrode are connected.

[0051] An embodiment of the present application also separately provides an elastic film damage detection device, which is applied to the pressure tank described in any embodiment of the present application, and the elastic film damage detection device includes: a first electrode and a second electrode, the first electrode is a conductive structure of the shell of the pressure tank and can contact the water in the first space, and the second electrode can contact the water flowing outside the pressure tank to determine whether the elastic film is damaged based on whether the first electrode and the second electrode are connected.

[0052] Here, for the exemplary explanations of the above-mentioned pressure tank and elastic film damage detection device, reference can be made to the above-mentioned embodiment for the water supply system.

[0053] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A pressure tank, characterized in that: include: A shell, an elastic film, and a water inlet, wherein the shell has a conductive structure, the elastic film has a fixed edge, and the fixed edge is fixed above the water inlet to divide the inner cavity of the pressure tank into a first space for storing gas and a second space for storing water, and when water is transported to or output from the second space, the first space and the second space have a variable pressure difference; The pressure tank is connected to a water pump through a water inlet channel, the water inlet is connected to the water inlet channel, and the second space is connected to a water outlet channel, so that when the water pump is working, water is input into the second space through the variable pressure difference, or, when the pressure tank needs to supply water, the water stored in the second space is output through the water outlet channel through the variable pressure difference; The conductive structure is used as the first electrode in the elastic film damage detection device, and the first electrode can contact the water in the first space. The second electrode in the elastic film damage detection device can contact the water flowing outside the pressure tank, so as to judge whether the elastic film is damaged based on whether the first electrode and the second electrode are connected.

2. The pressure tank according to claim 1, characterized in that: At least a portion of the housing is made of conductive material to form the conductive structure.

3. The pressure tank according to any one of claims 1 to 2, characterized in that: The second electrode may be in contact with water flowing in at least one of the water inlet channel, the water outlet channel, and the water pump.

4. The pressure tank according to claim 3, characterized in that: The second electrode is at least one of the water inlet channel, the water outlet channel, the water pump, a structure provided on the water inlet channel, a structure on the water outlet channel, and a structure on the water pump, wherein the structure can contact water flowing outside the pressure tank.

5. The pressure tank according to claim 4, characterized in that: The structural parts include: at least one of a valve, a pressure gauge, and a pipeline fitting.

6. The pressure tank according to claim 1, characterized in that: If a gap is formed between the shell and the water inlet when the fixed edge is fixed above the water inlet, the pressure tank also includes: an insulating sealing structure, which is used to seal the gap to shield water flowing through the water inlet or conductive liquid in the external environment from entering the first space through the gap.

7. The pressure tank according to claim 6, characterized in that The insulating sealing structure is a connecting plate structure, which extends from the water inlet to the shell to squeeze the fixed edge to fix the fixed edge above the water inlet and seal the gap.

8. The pressure tank according to claim 7, characterized in that The connection disk structure is provided with a through hole, and the water inlet penetrates the connection disk structure through the through hole, so as to transport water to the second space through the water inlet.

9. The pressure tank according to claim 1, characterized in that: The elastic film damage detection device also includes: a detection circuit, a power supply and a switch module, the power supply is electrically connected to the switch module, and the switch module is electrically connected to the first electrode and the second electrode respectively to generate a detection signal with variable characteristics based on whether the first electrode and the second electrode are connected, and the detection signal is used to determine whether the elastic film is damaged.

10. An elastic film damage detection device, characterized in that: Applicable to the pressure tank described in any one of claims 1 to 9, the elastic film damage detection device comprises: a first electrode and a second electrode, the first electrode is a conductive structure possessed by the shell of the pressure tank and can contact the water in the first space, and the second electrode can contact the water flowing outside the pressure tank, so as to judge whether the elastic film is damaged based on whether the first electrode and the second electrode are connected.

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