Pressure monitoring device

Abstract

The utility model discloses a pressure monitoring device, which belongs to the technical field of pressure monitoring and comprises a communication component, a support component and a pressure monitoring component. The communication assembly communicates the pressure container to be measured with the pressure monitoring assembly; the pressure monitoring assembly comprises a plurality of pressure monitoring devices for monitoring the pressure in the pressure container in real time; the plurality of pressure monitoring assemblies are used for meeting different pressure monitoring signal calling requirements; the supporting assembly is used for supporting the communicating assembly and the pressure monitoring assembly. The pressure monitoring device can effectively solve the problems that in the prior art, an in-service pressure container is only provided with one pressure measuring hole, a plurality of pressure monitoring devices cannot be installed, and the calling requirement of newly-added pressure monitoring signals of an intelligent control system cannot be met.

Description

Technical Field

[0001] The utility model belongs to the technical field of pressure monitoring, and in particular relates to a pressure monitoring device. Background Art

[0002] Pressure vessels are usually installed in the hydraulic or gas systems of the turbine generator sets of hydropower stations, such as the pressure oil tanks of the speed governor system, pressure gas tanks, and pressure oil tanks of the cylinder valve system. In order to ensure the safe and stable operation of the pressure vessels and meet the newly added pressure monitoring signal call requirements of the intelligent control system, such as: to realize the high (low) pressure alarm of the pressure vessel, judge and control the start and stop of the pressure vessel pressure compensation device (oil pump, air compressor, etc.), and calibrate the measurement data of the pressure measuring device, it is necessary to install multiple pressure monitoring devices to monitor the pressure inside the pressure vessel in real time. Existing pressure vessels in service are generally only equipped with one pressure measuring hole, and it is impossible to install multiple pressure monitoring devices, which cannot meet the newly added pressure monitoring signal call requirements of the intelligent control system. Utility Model Content

[0003] The purpose of this utility model is to provide a pressure monitoring device to address the above-mentioned shortcomings, so as to solve the problems such as the existing technology that in-service pressure vessels only have one pressure measuring hole, cannot install multiple pressure monitoring devices, and cannot meet the new pressure monitoring signal calling requirements of intelligent control systems. In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions:

[0004] A pressure monitoring device includes a connecting component, a supporting component and a pressure monitoring component; the connecting component connects the pressure vessel to be tested with the pressure monitoring component; the pressure monitoring component includes several pressure monitoring devices, which monitor the pressure in the pressure vessel in real time; several of the pressure monitoring components are used to meet different pressure monitoring signal calling requirements; the supporting component is used to support the connecting component and the pressure monitoring component.

[0005] Furthermore, the connecting component includes a first flange, a second flange and a connecting pipe; the first flange and the second flange are both provided with flange holes; the flange hole of the first flange is connected to the flange hole of the second flange through a connecting pipe; the first flange is connected to the pressure measuring hole of the pressure vessel to be tested.

[0006] Furthermore, a regulating valve is provided on the connecting pipe; the regulating valve is used to block or circulate the medium in the connecting pipe.

[0007] Furthermore, the pressure monitoring assembly includes a valve seat and several pressure monitoring devices; the valve seat includes a valve disc and a pressure measuring tube assembly; the valve disc is provided with a flow hole; the second flange is connected to the valve disc, and the flange hole of the second flange is connected to the flow hole of the valve disc; the valve disc is connected to several pressure monitoring devices through the pressure measuring tube assembly.

[0008] Furthermore, the pressure measuring tube assembly includes two pressure measuring branches, which are respectively connected to both sides of the valve disc; the two pressure measuring branches are connected to the connecting pipe through the flow hole of the valve disc and the flange hole of the second flange.

[0009] Furthermore, a plurality of pressure measuring joints are evenly provided on the two pressure measuring branch pipes; the pressure measuring joints are connected to the pressure monitoring device.

[0010] Furthermore, several of the pressure monitoring devices are provided with a pre-gauge valve.

[0011] Furthermore, the support assembly includes a first support rod; the first support rod is a double-headed threaded screw; the bottoms of the first flange and the second flange are both provided with fixing holes; the two ends of the first support rod pass through the fixing holes on the first flange and the second flange respectively, and are fixedly connected by bolts.

[0012] Furthermore, the support assembly also includes two oblique support rods; one end of the two oblique support rods is fixedly connected to the bottom of the valve disc, and the other end is fixedly connected to the end of the two pressure measuring branches.

[0013] Furthermore, a plurality of threaded holes are provided at corresponding positions on the second flange and the valve disc, and the second flange and the valve disc are fixedly connected by bolts.

[0014] The beneficial effects of the utility model are:

[0015] 1. By installing this device, pressure vessels only need one pressure tap to meet the needs of installing multiple pressure monitoring devices. It is particularly suitable for old pressure vessels that only need a single pressure tap but need to add control signals. It improves the flexibility of equipment modification and reduces the cost of pressure vessel modification.

[0016] 2. This utility model features valves on the connecting pipe and in front of each pressure monitoring device, effectively isolating the entire monitoring system and each pressure monitoring device on the pressure branch pipe. This reduces the need to depressurize the pressure vessel due to defect repair or regular disassembly and calibration of the pressure monitoring device, saving maintenance time and costs and improving work efficiency.

[0017] 3. By setting the first support rod and welding the oblique support rod, the stability and strength of the entire pressure monitoring device are enhanced, and the reliability of the operation of the pressure device equipment is improved.

[0018] 4. Through effective valve isolation and stable structural strength, the operating safety risks of pressure vessels under pressurized conditions can be greatly reduced, especially the safety risks during regular calibration of pressure monitoring devices and frequent disassembly and assembly for defect handling, providing effective protection for the personal safety of operators.

[0019] 5. The pressure monitoring device of the present invention has a simple structure and assembly process, with a high degree of standardization of structural components and low production cost. Non-standard components such as the main valve seat do not require special processing technology, and the cost is controllable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the valve seat structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the connection between the utility model and the pressure vessel;

[0023] Figure 4 This is a half-section view of the valve seat of the utility model;

[0024] In the figure: 1. First flange; 2. First support rod; 3. Regulating valve; 4. Second flange; 5. Valve seat; 6. Valve before gauge; 7. Pressure monitoring device; 8. Valve disc; 9. Pressure measuring branch pipe; 10. Inclined support rod; 11. Pressure vessel. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] It should be noted that similar reference numerals and letters denote similar items in the following figures. Therefore, once an item is defined in one figure, it does not require further definition or explanation in subsequent figures. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the figures, or the positions or relationships in which the utility model product is typically placed when in use. These terms are intended solely for ease of description and simplification of the description of the utility model, and do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance. Furthermore, terms such as "horizontal" and "vertical" do not imply that a component must be absolutely horizontal or overhanging, but rather may be slightly tilted. For example, "horizontal" simply refers to a direction that is more horizontal than "vertical," and does not imply that the structure must be completely horizontal, but rather may be slightly tilted. It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0027] Example:

[0028] like Figure 1-4 As shown, a pressure monitoring device is connected to the pressure tap of an in-service pressure vessel 11 and comprises a connecting assembly, a supporting assembly, and a pressure monitoring assembly. Specifically, the connecting assembly comprises a first flange 1, a connecting pipe, and a second flange 4. Flange holes are provided between the first and second flanges 1 and 4, and the corresponding flange holes and the connecting pipe are welded together. The pressure tap of the pressure vessel 11 is a flange structure that can be directly connected to the first flange 1. A gasket is installed at the connection between the pressure tap and the first flange 1 to improve its sealing. If the pressure tap is a threaded hole, a flanged adapter structure can be installed in its place. The medium in the pressure vessel 11 enters the connecting pipe through the pressure tap.

[0029] The pressure monitoring assembly specifically includes a valve seat 5 and several pressure monitoring devices 7. The valve seat 5 specifically consists of a valve disc 8 and a pressure measuring tube assembly. A flow hole is provided on one side of the center of the valve disc 8, which is consistent with the flange hole at the center of the second flange 4. Threaded holes are provided at corresponding positions on the second flange 4 and the valve disc 8, which can be fixedly connected by bolts. A gasket is also installed at the connection between the valve disc 8 and the second flange 4 to improve its sealing performance. The pressure measuring tube assembly includes two pressure measuring branches 9, which are evenly arranged on both sides of the valve disc 8 and arranged horizontally. The flow hole inside the valve disc 8 and the two pressure measuring branches 9 are connected. The medium in the pressure vessel 11 can enter the two pressure measuring branches 9 through the pressure measuring hole, the flange hole of the first flange 1, the connecting pipe, the flange hole of the second flange 4, and the flow hole on the valve disc 8.

[0030] There are several pressure measuring joints evenly arranged on the pressure measuring branch pipe 9, and each pressure measuring joint is connected to a pressure monitoring device 7 through a section of pipeline. Multiple pressure monitoring devices 7 can monitor the pressure conditions of the pressure vessel 11 at the same time. The signals of each pressure monitoring device 7 are used to realize high (low) pressure alarm of the pressure vessel 11, judge and control the start and stop of the pressure replenishing device of the pressure vessel 11 (oil pump, air compressor, etc.), calibrate the measurement data of the pressure measuring device, etc., which can meet the calling requirements of the newly added pressure monitoring signal of the intelligent control system.

[0031] Preferably, a regulating valve 3 is provided on the connecting pipe, specifically employing a conventional ball valve structure, to control the flow and blockage within the connecting pipe. Simultaneously, a pre-gauge valve 6 is provided on the pipeline preceding each pressure monitoring device 7. This valve arrangement allows for flexible adjustment, effectively isolating each pressure monitoring device 7 on the pressure branch pipe 9. This reduces the need to depressurize the pressure vessel 11 due to defect repair or periodic disassembly and calibration of the pressure monitoring device 7, saving maintenance time and costs and improving work efficiency.

[0032] To further enhance the structural stability of the device, the support assembly specifically includes a first support rod 2, which is a double-ended screw structure with external threads. Fixing holes are provided at the lower ends of the first flange 1 and the second flange 4. The ends of the first support rod 2 are passed through the fixing holes at the lower ends of the first flange 1 and the second flange 4, respectively, and then secured with bolts to enhance structural stability. Two inclined support rods 10 are also provided on the valve seat 5. One end of each inclined support rod 10 is welded to the bottom end of the valve disc 8, and the other end is welded to the lower side of the two pressure measuring branches 9 away from the valve disc 8, forming a stable triangular structure to support each pressure monitoring device 7 and enhance overall structural stability.

[0033] Each connection of the present invention adopts the flange connection of the prior art, and the addition of gaskets improves the sealing performance to avoid affecting the monitoring of the pressure monitoring device 7. At the same time, the flange structure adopts the standard parts of the prior art and does not require special processing. The processing of the non-standard parts of the valve disc 8 structure also does not require special technology and can be achieved using the process technology of the prior art.

[0034] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A pressure monitoring device, characterized in that: The invention comprises a connecting component, a supporting component and a pressure monitoring component; the connecting component connects a pressure vessel (11) to be tested with the pressure monitoring component; the pressure monitoring component comprises a plurality of pressure monitoring devices (7) for real-time monitoring of the pressure in the pressure vessel (11); a plurality of the pressure monitoring components are used to meet different pressure monitoring signal calling requirements; the supporting component is used to support the connecting component and the pressure monitoring component.

2. A pressure monitoring device according to claim 1, characterized in that: The connecting assembly comprises a first flange (1), a second flange (4) and a connecting pipe; the first flange (1) and the second flange (4) are both provided with flange holes; the flange hole of the first flange (1) and the flange hole of the second flange (4) are connected through the connecting pipe; the first flange (1) is connected to the pressure measuring hole of the pressure vessel (11) to be tested.

3. A pressure monitoring device according to claim 2, characterized in that: The communicating pipe is provided with a regulating valve (3); the regulating valve (3) is used to block or circulate the medium in the communicating pipe.

4. A pressure monitoring device according to claim 2, characterized in that: The pressure monitoring assembly includes a valve seat (5) and a plurality of pressure monitoring devices (7); the valve seat (5) includes a valve disc (8) and a pressure measuring tube assembly; the valve disc (8) is provided with a flow hole; the second flange (4) is connected to the valve disc (8), and the flange hole of the second flange (4) is docked with the flow hole of the valve disc (8); the valve disc (8) is connected to the plurality of pressure monitoring devices (7) through the pressure measuring tube assembly.

5. A pressure monitoring device according to claim 4, characterized in that: The pressure measuring tube assembly comprises two pressure measuring branch pipes (9) which are respectively connected to both sides of the valve disc (8); the two pressure measuring branch pipes (9) are connected to the connecting pipe through the flow hole of the valve disc (8) and the flange hole of the second flange (4).

6. A pressure monitoring device according to claim 5, characterized in that: A plurality of pressure measuring joints are evenly arranged on the two pressure measuring branch pipes (9); the pressure measuring joints are connected to the pressure monitoring device (7).

7. The pressure monitoring device according to claim 1, characterized in that: Several of the pressure monitoring devices (7) are provided with a pre-meter valve (6).

8. The pressure monitoring device according to claim 2, characterized in that: The support assembly comprises a first support rod (2); the first support rod (2) is a double-headed threaded screw; the bottoms of the first flange (1) and the second flange (4) are both provided with fixing holes; the two ends of the first support rod (2) respectively pass through the fixing holes on the first flange (1) and the second flange (4) and are fixedly connected by bolts.

9. The pressure monitoring device according to claim 5, characterized in that: The support assembly further comprises two oblique support rods (10); one end of each of the two oblique support rods (10) is fixedly connected to the bottom of the valve disc (8), and the other end is fixedly connected to the end of each of the two pressure measuring branch pipes (9).

10. The pressure monitoring device according to claim 4, characterized in that: A plurality of threaded holes are provided at corresponding positions on the second flange (4) and the valve disc (8), and the second flange (4) and the valve disc (8) are fixedly connected by bolts.

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