Pressure monitoring device

Abstract

The invention, which belongs to the technical field of pressure monitoring, discloses a pressure monitoring device comprising a communication assembly, a support assembly and a pressure monitoring assembly. 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, multiple 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 invention belongs to the technical field of pressure monitoring, and in particular relates to a pressure monitoring device. Background Art

[0002] In the hydraulic or gas system of the turbine generator set of a hydropower station, pressure vessels are usually configured, such as the pressure oil tank of the unit speed governor system, the pressure gas tank, the pressure oil tank of the cylinder valve system, etc. In order to ensure the safe and stable operation of the pressure vessel and meet the newly added call requirements for pressure monitoring signals 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 replenishment device (oil pump, air compressor, etc.), and calibrate the measurement data of the pressure measuring device, etc., it is necessary to install multiple pressure monitoring devices to monitor the pressure in the pressure vessel in real time. The 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 call requirements for pressure monitoring signals of the intelligent control system. Summary of the invention

[0003] The purpose of the present invention is to provide a pressure monitoring device to solve the problems that the existing pressure vessels in service only have one pressure measuring hole, cannot install multiple pressure monitoring devices, and cannot meet the new pressure monitoring signal calling requirements of the intelligent control system. In order to achieve the above purpose, the present invention provides the following technical solutions:

[0004] A pressure monitoring device comprises a connecting component, a supporting component and a pressure monitoring component; the connecting component connects a pressure vessel to be tested with the pressure monitoring component; the pressure monitoring component comprises a plurality of pressure monitoring devices for real-time monitoring of the pressure in the pressure vessel; 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.

[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, the connecting pipe is provided with a regulating valve; 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 branch pipes, which are respectively connected to both sides of the valve disc; the two pressure measuring branch pipes 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 arranged on the two pressure measuring branch pipes; and 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 respectively pass through the fixing holes on the first flange and the second flange, 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 branch pipes.

[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 present invention are:

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

[0016] 2. The present invention is provided with valves on the connecting pipe and in front of each pressure monitoring device, which can effectively isolate the entire monitoring device and each pressure monitoring device on the pressure measuring branch pipe. This reduces the need to depressurize the pressure vessel due to defect handling of the pressure monitoring device or regular disassembly and calibration of the pressure monitoring device, saves maintenance time and cost, and improves 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 during 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, a high degree of standardization of structural parts, and a low manufacturing cost. Non-standard parts 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 present invention;

[0021] Figure 2 It is a schematic diagram of the valve seat structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the connection between the present invention and a pressure vessel;

[0023] Figure 4 is a half-section view of the valve seat of the present invention;

[0024] In the figure: 1. first flange; 2. first support rod; 3. regulating valve; 4. second flange; 5. valve seat; 6. valve before the meter; 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 in conjunction with 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 in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than 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 invention claimed for protection, 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 belong to the scope of protection of the present invention.

[0026] It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In the description of the present invention, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invention product is usually placed when used, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In addition, the terms "horizontal", "vertical", etc. do not mean that the components are absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted. In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Example:

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

[0029] The pressure monitoring assembly specifically includes a valve seat 5 and a plurality of 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. The flow hole is consistent with the flange hole at the center of the second flange 4. The second flange 4 and the valve disc 8 are provided with threaded holes at corresponding positions, which can be fixedly connected by bolts. The connection between the valve disc 8 and the second flange 4 is also equipped with a gasket 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 in turn.

[0030] A number of pressure measuring joints are 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 condition 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 (oil pump, air compressor, etc.) of the pressure vessel 11, 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, and a ball valve structure of the prior art can be used to control the blocking and flow conditions in the connecting pipe; at the same time, a pre-meter valve 6 can be provided on the pipeline in front of each pressure monitoring device 7. Through the setting of this part of the valve, it can be flexibly adjusted to achieve effective isolation of each pressure monitoring device 7 on the pressure measuring branch pipe 9. It reduces the need to remove the pressure from the pressure vessel 11 due to defect handling of the pressure monitoring device 7 or regular disassembly and calibration of the pressure monitoring device 7, saves maintenance time and cost, and improves work efficiency.

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

[0033] Each connection of the present invention adopts the flange connection of the prior art, and the gasket is added to improve 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 no special processing is required. The processing of the non-standard parts of the valve disc 8 structure also does not require special technology, and can be achieved by 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 present invention specification and drawings, 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: It 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 call 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 via 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 connecting pipe is provided with a regulating valve (3); the regulating valve (3) is used to block or circulate the medium in the connecting pipe.

4. A pressure monitoring device according to claim 2, characterized in that: The pressure monitoring assembly comprises a valve seat (5) and a plurality of pressure monitoring devices (7); the valve seat (5) comprises a valve disc (8) and a pressure measuring tube assembly; a flow hole is provided on the valve disc (8); the second flange (4) is connected to the valve disc (8), and the flange hole of the second flange (4) is butt-jointed with the flow hole of the valve disc (8); the valve disc (8) is connected to the plurality of pressure monitoring devices (7) via 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 the two 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. A pressure monitoring device according to claim 1, characterized in that: A plurality of the pressure monitoring devices (7) are each provided with a pre-meter valve (6).

8. A 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. A 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 two pressure measuring branch pipes (9).

10. A 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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