Fixing device for fixing differential pressure gauge control center and differential pressure gauge

Abstract

According to the fixing device applied to the differential pressure gauge control center and the differential pressure gauge, the fixing back plate can be fixed to the fixing carrier, the storage battery is arranged in the containing frame formed by the fixing back plate, the side surrounding frame and the upper cover plate, at least two fixing supports are arranged on the first face of the fixing back plate, and the storage battery is arranged in the containing frame. And a connecting piece is arranged between the fixed brackets, so that the storage battery can be fixed on the back plate. And the connecting piece is detachably connected with the at least two fixed brackets, so that the storage battery can be conveniently mounted and dismounted.

Description

Technical Field

[0001] The present disclosure relates to the technical field of device fixing apparatuses, and in particular to a fixing apparatus for fixing a differential pressure gauge control center and a differential pressure gauge. Background Art

[0002] A differential pressure gauge is an instrument used to measure pressure differences. It usually consists of two pressure sensors, one for high pressure and the other for low pressure, and then the two readings are subtracted to get the pressure difference. Differential pressure gauges can be used in a variety of applications, including industrial production, environmental monitoring, medical equipment, etc. Summary of the invention

[0003] This disclosure section is provided to introduce concepts in a brief form, which will be described in detail in the detailed description section below. This disclosure section is not intended to identify key features or essential features of the claimed technical solution, nor is it intended to limit the scope of the claimed technical solution.

[0004] The disclosed embodiment provides a fixing device and a differential pressure gauge used in a fixed differential pressure gauge control center, wherein a battery is arranged in a receiving frame formed by a fixed back plate, the side surrounding frame and the upper cover plate, and at least two fixing brackets are arranged on the first surface of the fixed back plate, and connecting members are arranged between the fixing brackets, so that the battery can be fixed on the back plate. The connecting member and at least two fixing brackets are detachably connected, so that the battery can be easily installed and removed.

[0005] In a first aspect, an embodiment of the present disclosure provides a fixing device applied to a differential pressure gauge control center, the differential pressure gauge control center includes a battery, and the fixing device includes:

[0006] Fixed back panel;

[0007] A side enclosing frame adapted to the fixed back plate, the side enclosing frame being detachably connected to the fixed back plate;

[0008] An upper cover plate adapted to the side surrounding frame, wherein the fixed back plate, the side surrounding frame and the upper cover plate form a containing frame, and the battery is arranged in the containing frame;

[0009] Two fixing brackets are arranged on the first surface of the fixed back plate;

[0010] A connecting piece is arranged between the at least two fixing brackets, the connecting piece, the two fixing brackets and the fixing back plate form an encirclement, and the storage battery is arranged in the encirclement.

[0011] Optionally, the at least two fixing brackets include a first fixing bracket and a second fixing bracket.

[0012] The first fixing bracket and the second fixing bracket are symmetrically arranged;

[0013] The first fixing bracket comprises a buckling portion and a supporting portion, wherein the buckling portion is used to be combined with the connecting member, and the supporting portion is used to support the battery;

[0014] The second fixing bracket includes a buckling portion and a supporting portion corresponding to the first fixing bracket.

[0015] Optionally, the first fixing bracket includes two buckling parts, the two buckling parts are arranged at an interval, and the supporting part is arranged between the two buckling parts.

[0016] Optionally, the buckling portion is in a U-shape, and the opening of the U-shaped buckling portion is slanted toward the first surface of the fixed back plate.

[0017] Optionally, the fixing bracket is connected to the first surface of the fixing back plate via bolts.

[0018] Optionally, the connecting member is an elastic connecting member.

[0019] Optionally, the elastic connecting member comprises a first elastic strip and a second elastic strip, elastic connecting strips are arranged at the ends of the first elastic strip and the second elastic strip, and at least two elastic connecting strips are arranged between the first elastic strip and the second elastic strip.

[0020] Optionally, the fixing device further comprises:

[0021] A limiter, the limiter being arranged on the first surface of the fixed back plate,

[0022] The above-mentioned limiting member is used to abut against the above-mentioned storage battery;

[0023] The above-mentioned limiting member is perpendicular to the first surface of the above-mentioned fixed back plate, and the length of the above-mentioned limiting member is greater than 3 cm.

[0024] Optionally, the at least two fixing brackets are fixedly connected to the frame-shaped structure, the frame-shaped structure is matched with the fixed back plate, and the frame-shaped structure is fixed to the first surface of the fixed back plate by bolts.

[0025] In a second aspect, an embodiment of the present disclosure provides a differential pressure gauge, comprising the above-mentioned fixing device, functional components and batteries according to any optional implementation manner of the first aspect, wherein the above-mentioned fixing device is used to set the above-mentioned functional components and the above-mentioned batteries.

[0026] The embodiment of the present disclosure provides a fixing device and a differential pressure gauge for fixing a differential pressure gauge control center, wherein a battery is arranged in a receiving frame formed by a fixed back plate, the side surrounding frame and the upper cover plate, and at least two fixing brackets are arranged on the first surface of the fixed back plate, and connecting members are arranged between the fixing brackets, so that the battery can be fixed on the back plate. The connecting member and at least two fixing brackets are detachably connected, so that the battery can be easily installed and removed. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and other features, advantages and aspects of the embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. Throughout the accompanying drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and the originals and elements are not necessarily drawn to scale.

[0028] Figure 1 is a partial schematic diagram of the interior of a fixing device for fixing a differential pressure gauge control center provided according to an embodiment of the present disclosure;

[0029] Figure 2 is a side schematic diagram of a fixing device for fixing a differential pressure gauge control center provided according to an embodiment of the present disclosure;

[0030] Figure 3 is a schematic diagram of an upper cover plate of a fixing device for fixing a differential pressure gauge control center provided according to an embodiment of the present disclosure;

[0031] Figure 4 is a schematic diagram of a side enclosing frame of a differential pressure level gauge fixing device provided according to another embodiment of the present disclosure;

[0032] Figure 5 is a top view schematic diagram of a combination of a fixed back plate and a side surrounding frame of a differential pressure level gauge fixing device according to another embodiment of the present disclosure;

[0033] Figure 6 is a schematic diagram of the arrangement of a fixing bracket on a fixing back plate according to another embodiment of the present disclosure;

[0034] Figure 7 is a partial structural schematic diagram of a fixing device provided according to another embodiment of the present disclosure;

[0035] Figure 8 is a partial structural schematic diagram of a fixing device provided according to another embodiment of the present disclosure;

[0036] Fig. 9 is a schematic diagram of the position of the limiter provided according to another embodiment of the present disclosure;

[0037] Fig.10is a front schematic diagram of a fixing device for fixing a differential pressure gauge control center provided according to another embodiment of the present disclosure;

[0038] Figure 11-13 It is a structural schematic diagram of a differential pressure gauge provided according to another embodiment of the present disclosure. DETAILED DESCRIPTION

[0039] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments described herein, which are instead provided for a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0040] It should be understood that the various steps described in the method embodiments of the present disclosure may be performed in different orders and / or in parallel. In addition, the method embodiments may include additional steps and / or omit the steps shown. The scope of the present disclosure is not limited in this respect.

[0041] The term "including" and its variations used herein are open inclusions, i.e., "including but not limited to". The term "based on" means "based at least in part on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". The relevant definitions of other terms will be given in the following description.

[0042] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0043] It should be noted that the modifications of "one" and "plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0044] The names of the messages or information exchanged between multiple devices in the embodiments of the present disclosure are only used for illustrative purposes and are not used to limit the scope of these messages or information.

[0045] It can be seen from the records of background technology that the differential pressure gauge can detect the pressure difference between liquids. When the differential pressure gauge is used for liquid pressure detection, the differential pressure gauge can detect the pressure between liquids, thereby determining the height of the liquid based on the pressure of the liquid. The control center of the differential pressure gauge can display information such as liquid level height and pressure difference, so that users can better understand the pressure conditions in the liquid storage tank.

[0046] Since the control center of the differential pressure gauge has the function of displaying information such as liquid level height and pressure difference, the differential pressure gauge includes multiple functional components, which need to be assembled using a housing. At the same time, in order to be able to be used normally in the case of power failure, the differential pressure gauge in the present disclosure may include a battery.

[0047] In the related art, a mechanical instrument is usually used to display the pressure in the liquid storage tank. This method is not only inconvenient for users to view the specific pressure in the liquid storage tank, but also easy for users to misread the pressure.

[0048] The differential pressure gauge control center disclosed in the present invention can display pressure information in a numerical manner, and this method allows users to better see the specific pressure and is not easy to make mistakes; however, this method requires the mutual cooperation of multiple functional components. Therefore, it is necessary to design a corresponding fixing device for the differential pressure gauge control center to carry the differential pressure gauge control center.

[0049] Please refer to Figure 1-5 , Figure 1 It shows a partial schematic diagram of the interior of a fixing device for fixing a differential pressure gauge control center according to the present disclosure, Figure 2 A side view of a fixing device for fixing a differential pressure gauge control center according to the present disclosure, Figure 3 A schematic diagram of an upper cover plate of a fixing device for fixing a differential pressure gauge control center disclosed in the present invention is shown, Figure 4 It can be understood as a schematic diagram of the side enclosure of the differential pressure level gauge fixture. Figure 5 It can be understood as a top view schematic diagram of the combination of the fixed back plate and the side surrounding frame of the differential pressure level gauge fixing device.

[0050] Combination Figure 1-5 It can be seen that the differential pressure gauge control center may include a battery 110, and the fixture 10 includes:

[0051] A fixed back plate 120; the fixed back plate 120 can be used to be fixed on a fixed carrier;

[0052] A side enclosure frame 130 adapted to the fixed back plate 120, wherein the side enclosure frame 130 is detachably connected to the fixed back plate 120;

[0053] An upper cover plate 140 adapted to the side enclosure frame 130, the fixed back plate 120, the side enclosure frame 130 and the upper cover plate 140 form a receiving frame, and the battery 110 is arranged in the receiving frame;

[0054] Two fixing brackets are provided on the first surface of the fixed back plate 120; wherein the reference numeral 150 may indicate one of the fixing brackets;

[0055] A connecting member 160 is disposed between at least two fixing brackets. The connecting member 160, the two fixing brackets and the fixing back plate 120 form an encirclement, and the battery 110 is disposed in the encirclement.

[0056] The disclosed method sets the battery inside the fixing device, so that the battery can be better protected. At the same time, since two fixing brackets and a connecting piece for fixing the battery are provided for the battery, the battery can be better fixed inside the fixing device.

[0057] As an example, the fixing bracket and the connecting member may be detachably connected, which may also facilitate removal of the battery for replacement.

[0058] It can be seen that in the fixing device for fixing the differential pressure gauge control center disclosed in the present invention, the battery is arranged in a receiving frame formed by the fixed back plate, the side surrounding frame and the upper cover plate, and at least two fixing brackets are arranged on the first surface of the fixed back plate, and connecting members are arranged between the fixing brackets, so that the battery can be fixed on the back plate. The connecting member and the at least two fixing brackets are detachably connected, so that the battery can be easily installed and removed.

[0059] Further, by Figure 4 It can be seen that the differential pressure gauge of the present disclosure may also include devices for related functions such as alarm and information transmission, so as to facilitate related operations such as alarm or transmission of the information detected by the differential pressure gauge.

[0060] In some embodiments, the number of the fixing brackets may be four, that is, a fixing bracket may be provided in four directions respectively, so that the battery can be better fixed on the first surface of the fixed back plate.

[0061] For ease of understanding, you can combine Figure 6 To explain, Figure 6It can be understood as a schematic diagram of the arrangement of the fixing bracket on the fixed back plate. The numbers 151, 152, 153 and 154 in the figure can all be understood as the positions of the fixing bracket on the fixed back plate 110. It can be seen that when the fixing bracket is arranged in this way, it is more conducive to the fixation of the battery. In this way, the shape of the battery that can be adapted can be more diverse. When the fixing bracket is arranged in sequence, the connecting piece can be set from different positions, and Figure 6 The dotted line in the figure can be understood as the setting form of the connecting piece.

[0062] In some embodiments, at least two fixing brackets are fixedly connected to the frame structure, the frame structure is adapted to the fixed back plate, and the frame structure is fixed to the first surface of the fixed back plate by the bolts.

[0063] As an example, at least two fixing brackets are fixedly connected to the frame structure, so that at least two fixing brackets can be more conveniently fixed to the above-mentioned fixed back plate. That is, due to the provision of the frame structure, it is convenient to increase the fixing points of the fixing brackets on the fixed back plate; thus, the fixing brackets can be better arranged on the fixed back plate.

[0064] Furthermore, a groove for accommodating the frame-shaped structure may be provided on the fixed back plate, so that the frame-shaped structure can be better fixed on the fixed back plate, and thus the fixed bracket can be better fixed on the fixed back plate.

[0065] For ease of understanding, you can combine Figure 1 and Figure 7 To explain, Figure 7 It can be understood as a partial structural schematic diagram of a possible fixing device disclosed in the present invention, Figure 7 It can be seen that the frame structure 170 can be connected with the fixed bracket ( Figure 7 and Figure 1 The reference numeral 150 in the figure can be understood as a fixed bracket) and the frame structure can also be provided with a fixed back plate to facilitate the fixation of the battery.

[0066] In some embodiments, the at least two fixing brackets may include a first fixing bracket and a second fixing bracket, and the first fixing bracket and the second fixing bracket are symmetrically arranged;

[0067] The first fixing bracket includes a buckling portion and a supporting portion, wherein the buckling portion is used to be combined with the connecting member, and the supporting portion is used to support the battery;

[0068] The second fixing bracket includes a buckling portion and a supporting portion corresponding to the first fixing bracket.

[0069] As an example, the first fixing bracket and the second fixing bracket may be symmetrical, and the sizes of the first fixing bracket and the second fixing bracket may be the same, thus reducing the manufacturing costs of the first fixing bracket and the second fixing bracket.

[0070] As an example, the shape of the support portion may be adapted to the shape of the battery, so that better support for the battery can be achieved.

[0071] In some embodiments, the first fixing bracket includes two buckling parts, the two buckling parts are arranged at an interval, and the supporting part is arranged between the two buckling parts.

[0072] As an example, two buckling parts are provided at both ends of the support part, so that the binding force of the connecting member on the battery acts on the two ends of the support part, thereby better fixing the battery.

[0073] At the same time, this method uses two connecting pieces during the process of fixing the battery, making the fixation of the battery more secure.

[0074] In some embodiments, the buckling portion is in a U-shape, and the opening of the U-shaped buckling portion is slanted toward the first surface of the fixed back plate.

[0075] The shape of the buckle portion designed in this way can also facilitate the combination of the connector and the buckle portion, so as to more conveniently fix the battery.

[0076] In order to better understand the fixing device for fixing the differential pressure level gauge control center disclosed in the present invention, it can be combined with Figure 1 , Figure 7 and Figure 8 To explain, Figure 8 It is also possible to understand that the partial structural diagram of the fixing device disclosed in the present invention, combined with Figure 1 , Figure 7 and Figure 8 It can be seen that two fixing brackets (label 150 can indicate a fixing bracket) can be symmetrically arranged, and the fixing bracket can include a supporting portion 1501 and a buckling portion 1502, and such a design can better fix the battery.

[0077] In some embodiments, the fixing bracket may be connected to the first surface of the fixing back plate by bolts.

[0078] In this way, the fixed bracket can be installed after the fixed back plate is installed, so that the fixing device can be easily disassembled and transported.

[0079] At the same time, the fixed bracket and the fixed back plate can be more stably connected by bolt connection.

[0080] In some implementations, a fixed bracket may be connected to the fixed back plate using three bolts, so that the fixed bracket may be more firmly fixed to the fixed back plate.

[0081] In some embodiments, the connector may be an elastic connector.

[0082] As an example, when the connector is an elastic connector, it can adapt to batteries of different shapes and sizes, that is, batteries of different sizes and shapes can be fixed on the back plate through the cooperation between the fixing bracket and the connector.

[0083] In some embodiments, the elastic connector includes a first elastic strip and a second elastic strip, elastic connecting strips are arranged at the ends of the first elastic strip and the second elastic strip, and at least two elastic connecting strips are arranged between the first elastic strip and the second elastic strip.

[0084] As an example, double elastic strips can be provided so that the elastic connector has a wider force-bearing area for the battery. At the same time, a connecting strip is provided between the double elastic strips to increase the lateral tension between the double elastic strips, thereby making the elastic member more stable and the elastic connector more stably fix the battery.

[0085] In order to better understand the shape of the connector of the present invention, Figure 1 and Figure 7 For joint viewing, of course, it should be noted that Figure 1 and Figure 7 The present disclosure merely illustrates one possible structure of the connector 170 .

[0086] In some embodiments, the fixing device may further include: a limiting member, which is disposed on the first surface of the fixed back plate and is used to abut against the above-mentioned storage battery.

[0087] As an example, the setting of the limiting member can make the battery be better fixed, so that even a heavy battery can be fixed, thereby improving the applicability of the fixing device. The limiting member is perpendicular to the first surface of the fixed back plate, and the length of the limiting member is greater than 3 cm.

[0088] It should be understood that such a design can increase the contact area between the limiting member and the battery, so that the battery can be better supported.

[0089] As an example, a slide rail for the position-limiting member to perform lateral displacement is provided on the first surface of the fixed back plate, the position-limiting member is adapted to the slide rail, and one end is provided in the slide rail. In this way, the position-limiting member can perform lateral displacement in the slide rail, thereby better supporting the battery.

[0090] For ease of understanding, you can combine Fig. 9 To explain, Fig. 9 It can be understood as a schematic diagram of the position of the limiter in a possible implementation manner of the present disclosure. Fig. 9 In the embodiment, a limiting member 180 and a slide rail 190 matched with the limiting member 180 can be provided on the fixed back plate 120 , and the limiting member 180 can slide on the slide rail 190 .

[0091] Furthermore, it can be combined with Fig.10 To better understand the fixture of the present disclosure applied to the differential pressure gauge control center, Fig.10 It can be understood as a front view of a possible differential pressure gauge disclosed in the present invention, such as Fig.10 It can be seen that the differential pressure gauge can display information and can be operated from the front. That is, compared with the existing differential pressure gauges, the differential pressure gauge disclosed in the present invention has a huge improvement in functionality and intelligence compared with the related technologies.

[0092] As an example, the functional components of the differential pressure level meter include but are not limited to: power supply, pressure sensor, etc.

[0093] As an example, the differential pressure gauge may also include components such as a display screen and function buttons, etc. The display screen and the function buttons may be arranged on the upper cover plate, so that it is convenient for the user to view the liquid level pressure information and to press the function buttons.

[0094] In some embodiments, the present disclosure further provides a differential pressure gauge, which includes the above-mentioned fixing device, functional components, a battery and a mechanical pressure gauge, and the fixing device is used to set the above-mentioned functional components and the above-mentioned battery;

[0095] The mechanical pressure gauge is connected to the fixing device via a connecting mechanism.

[0096] For ease of understanding, you can combine Figure 11-13 To explain, Figure 11-13 It can be seen that the mechanical pressure gauge 20 can be understood as a universal differential pressure gauge of the national standard. The setting of the mechanical pressure gauge 20 can improve the stability of the differential pressure gauge. For example, when a functional component set inside the fixing device 10 fails, the mechanical pressure gauge 20 can also be used to determine the pressure.

[0097] It should be understood that the connection structure connecting the fixing device 10 and the mechanical pressure gauge 20 can be reasonably configured, such as Figure 11-13As shown, the present disclosure lists a possible connection mechanism 30, one end of which can be connected to the mechanical pressure gauge 20, and the other end of which is connected to the fixing device 10, and the connection structure 30 can be fixed together with the mechanical pressure gauge 20 and the fixing device 10 by bolt connection. That is, by providing the connection mechanism 30, the fixing device 10 and the mechanical pressure gauge 20 can be connected together by later assembly.

[0098] It should be noted that the specific implementation method of using the fixing device to set the above-mentioned functional components and the above-mentioned battery has been described in detail in the above-mentioned embodiment, and for the sake of brevity of the specification, it will not be repeated here.

[0099] It should be understood that the connection mechanism 30 can be fixed on the wall, so that the fixing device 10 and the mechanical pressure gauge 20 can be fixed on the wall together by using the connection mechanism 30. The fixing process for the differential pressure gauge is simplified.

[0100] The above description is only a preferred embodiment of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of disclosure involved in the present disclosure is not limited to the technical solutions formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above disclosed concept. For example, the above features are replaced with the technical features with similar functions disclosed in the present disclosure (but not limited to) by each other.

[0101] In addition, although each operation is described in a specific order, this should not be understood as requiring these operations to be performed in the specific order shown or in a sequential order. Under certain circumstances, multitasking and parallel processing may be advantageous. Similarly, although some specific implementation details are included in the above discussion, these should not be interpreted as limiting the scope of the present disclosure. Some features described in the context of a separate embodiment can also be implemented in a single embodiment in combination. On the contrary, the various features described in the context of a single embodiment can also be implemented in multiple embodiments individually or in any suitable sub-combination mode.

[0102] Although the subject matter has been described in language specific to structural features and / or methodological logical actions, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. On the contrary, the specific features and actions described above are merely example forms of implementing the claims.

Claims

1. A fixing device for fixing a differential pressure gauge control center, characterized in that: The differential pressure gauge control center includes a battery, and the fixing device includes: Fixed back panel; A side enclosing frame adapted to the fixed back plate, wherein the side enclosing frame is detachably connected to the fixed back plate; An upper cover plate adapted to the side surrounding frame, wherein the fixed back plate, the side surrounding frame and the upper cover plate form a containing frame, and the battery is arranged in the containing frame; Two fixing brackets are arranged on the first surface of the fixed back plate; A connecting piece is arranged between the two fixing brackets, and the connecting piece, the two fixing brackets and the fixing back plate form an encirclement, and the storage battery is arranged in the encirclement.

2. The fixing device for fixing a differential pressure gauge control center according to claim 1, characterized in that: The two fixing brackets include a first fixing bracket and a second fixing bracket, The first fixing bracket and the second fixing bracket are symmetrically arranged; The first fixing bracket includes a buckling portion and a supporting portion, the buckling portion is used to be combined with the connecting member, and the supporting portion is used to support the battery; The second fixing bracket includes a buckling portion and a supporting portion corresponding to the first fixing bracket.

3. The fixing device for fixing a differential pressure gauge control center according to claim 2 is characterized in that: The first fixing bracket includes two buckling parts, the two buckling parts are arranged at an interval, and the supporting part is arranged between the two buckling parts.

4. The fixing device for fixing a differential pressure gauge control center according to claim 3 is characterized in that: The buckle portion is in a U-shape, and an opening of the U-shaped buckle portion is slanted toward the first surface of the fixed back plate.

5. The fixing device for fixing a differential pressure gauge control center according to claim 1, characterized in that: The fixing bracket is connected to the first surface of the fixing back plate through bolts.

6. The fixing device for fixing a differential pressure gauge control center according to claim 1, characterized in that: The connecting piece is an elastic connecting piece.

7. The fixing device for fixing a differential pressure gauge control center according to claim 6, characterized in that: The elastic connecting member comprises a first elastic strip and a second elastic strip, elastic connecting strips are arranged at the ends of the first elastic strip and the second elastic strip, and at least two elastic connecting strips are arranged between the first elastic strip and the second elastic strip.

8. The fixing device for fixing a differential pressure gauge control center according to claim 1, characterized in that: The fixing device also includes: A limiter, the limiter being arranged on the first surface of the fixed back plate, The limiting member is used to abut against the battery; Wherein, the limiting member is perpendicular to the first surface of the fixed back plate, and the length of the limiting member is greater than 3 cm.

9. The fixing device for fixing a differential pressure gauge control center according to claim 1, characterized in that: The two fixing brackets are fixedly connected to the frame-shaped structure, the frame-shaped structure is matched with the fixed back plate, and the frame-shaped structure is fixed to the first surface of the fixed back plate by bolts.

10. A differential pressure gauge, characterized in that: It comprises the fixing device according to any one of claims 1 to 9, a functional component, a battery and a mechanical pressure gauge, wherein the fixing device is used to set the functional component and the battery; The mechanical pressure gauge is connected to the fixing device via a connecting mechanism.

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