Pressure gauge valve for marine non-welding hydraulic piping system

Abstract

The utility model discloses a pressure gauge valve for a marine non-welding hydraulic pipe system, which comprises a valve body, a valve rod and a jacket nut, the lower end of the valve body is provided with a transition pipeline connecting hole, and the transition pipeline connecting hole is communicated with a lower cavity body of a valve cavity through a first channel to form an inflow channel of the pressure gauge valve; a valve rod is connected with the valve body through threads and divides the valve cavity into an upper cavity body and a lower cavity body. The outer sleeve nut is connected with the side part of the valve body; and the internal threaded hole of the jacket nut is communicated with the lower cavity of the valve cavity through a second channel to form an outflow channel of the pressure gauge valve. According to the utility model, the leakage problem of the connecting part can be avoided without fire welding in the installation process, the reliability is high, welding is avoided, the corrosion resistance is strong, the construction is simple, and the maintenance is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of accessories of marine hydraulic piping system, specifically to a kind of pressure gauge valve for marine non-welding hydraulic piping system. BACKGROUND

[0002] With the expansion of human activity range from land to ocean, shipbuilding technology develops rapidly. In order to realize the multifunctionalization of ship, a large number of hydraulic piping systems need to be set on the ship. With the large-scale of ship tonnage, the hydraulic piping systems used on the ship are also complicated and large-scale, which leads to the diameter range of marine hydraulic piping being larger and larger, from tens of millimeters to hundreds of millimeters.

[0003] To ensure the long-period safe operation of marine hydraulic piping system, the pressure of each hydraulic pipeline in the hydraulic piping system needs to be monitored. Although pressure gauge and pressure sensor are mature technologies, different specifications of pressure gauge or pressure sensor need to be used due to the existence of hydraulic pipelines with different diameters in marine hydraulic piping system, which increases the workload of procurement, installation and subsequent maintenance.

[0004] In addition, the construction conditions on the ship are much harsher than on land, and many cases do not allow fire, so welding cannot be used for installation, and therefore the existing pressure gauge valve cannot be directly used on the ship. SUMMARY

[0005] The technical problem to be solved by the utility model is to provide a pressure gauge valve for marine non-welding hydraulic piping system, which can be applied to pipelines with different diameters.

[0006] To solve the above technical problems, the technical solution of the pressure gauge valve for marine non-welding hydraulic piping system of the utility model is as follows:

[0007] The valve includes a valve body 1, a valve stem 4, and an outer nut 2. The valve body 1 has a valve cavity extending vertically. A transition pipe connection hole 22 is provided at the lower end of the valve body 1. The transition pipe connection hole 22 communicates with the lower cavity of the valve cavity through a first channel 21, forming the inflow channel of the pressure gauge valve. The valve stem 4 is disposed within the valve cavity. The valve stem 4 is threaded to the valve body and divides the valve cavity into an upper cavity and a lower cavity. The lower end of the valve stem 4 forms a valve tip 41, and the lower cavity forms an inwardly protruding seal. Surface 42; the outer nut 2 connects to the side of the valve body 1; the internal thread hole of the outer nut 2 is connected to the lower cavity of the valve chamber through the second channel 11, forming the outflow channel of the pressure gauge valve; by rotating the valve stem 4, the valve stem 4 moves up and down relative to the valve chamber; when the valve stem 4 moves upward until its valve tip 41 is away from the sealing surface 42 of the valve chamber, the inflow channel and the outflow channel are connected; when the valve stem 4 moves downward until its valve tip 41 contacts the sealing surface 42 of the valve chamber, the valve stem 4 separates the inflow channel and the outflow channel.

[0008] In another embodiment, the lower end of the valve body 1 is connected to one end of the transition pipe 30 through the transition pipe connection hole 22, and the other end of the transition pipe 30 is inserted into the hydraulic pipe to be monitored.

[0009] In another embodiment, a connecting nut 25 is fitted onto the transition pipe 30; the connecting nut 25 is connected to the external thread 24 at the lower end of the valve body 1 through its internal thread; a metal ferrule 26 is provided between the connecting nut 25 and the lower end of the valve body 1; the hardness of the connecting nut 25 is greater than the hardness of the metal ferrule 26.

[0010] In another embodiment, the lower end of the internal threaded hole of the connecting nut 25 is formed with an inner conical surface; the lower end of the metal ferrule 26 is formed with a ferrule conical surface, which matches the inner conical surface of the nut.

[0011] In another embodiment, the interface of the transition pipe connection hole 22 forms a conical hole 23; the upper end of the metal sleeve 26 forms a conical surface that fits into the conical hole 23.

[0012] In another embodiment, the outer nut 2 is connected to a pressure gauge or pressure sensor via an internal threaded hole.

[0013] In another embodiment, a sealing gasket 3 is provided inside the outer nut 2; the sealing gasket 3 is disposed between the side end face of the valve body 1 and the pressure gauge or pressure sensor;

[0014] In another embodiment, the first channel 21 is located below the valve chamber; the second channel 11 is located on the side of the valve chamber.

[0015] In another embodiment, the valve stem 4 is fixedly connected to the handle 10.

[0016] In another embodiment, a sealing element is provided in the upper cavity; the sealing element includes a sealing ring 7 and a gasket 6.

[0017] In another embodiment, a clamping block 8 is provided at the upper end of the valve body 1, and the clamping block 8 is located above the upper cavity; a valve stem adjusting nut 9 is sleeved on the outside of the clamping block 8, and the valve stem adjusting nut 9 is threadedly connected to the upper end of the valve body 1.

[0018] In another embodiment, a locking nut 5 is provided below the valve stem adjusting nut 9, and the locking nut 5 is threadedly connected to the valve body 1.

[0019] The technical effects that this utility model can achieve are:

[0020] During installation, this utility model only requires a mounting hole that matches the transition pipe to be drilled on the hydraulic pipeline to be monitored. The valve body can be fixedly connected to the hydraulic pipeline to be monitored through the transition pipe. Therefore, this utility model can be applied to hydraulic pipelines of different diameters, thereby enabling the standardization of pressure gauges or pressure sensors in hydraulic pipeline systems.

[0021] This utility model uses a non-welded clamp connection method, which is set between the mechanical pressure gauge or electronic pressure sensor and the hydraulic pipeline. During the installation process, no welding is required, which can avoid leakage problems at the connection. It has high reliability, no welding required, strong corrosion resistance, and is simple to construct and easy to maintain.

[0022] This utility model has a small aperture and high working pressure. Attached Figure Description

[0023] Those skilled in the art will understand that the following description is merely illustrative of the principles of this invention, and these principles can be applied in various ways to achieve many different alternative implementations. These descriptions are only intended to illustrate the general principles of the teachings of this invention and are not intended to limit the inventive concept disclosed herein.

[0024] Embodiments of the present invention are illustrated in conjunction with the accompanying drawings, which are incorporated in and form part of this specification, and together with the foregoing general description and the following detailed description of the drawings, serve to explain the principles of the present invention.

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0026] Figure 1 This is a schematic diagram of the pressure gauge valve of this utility model for marine non-welded hydraulic piping systems;

[0027] Figure 2This is a schematic diagram of the present invention from another angle;

[0028] Figure 3 This is a partially enlarged schematic diagram of the P2 port of this utility model.

[0029] Explanation of the reference numerals in the figure:

[0030] 1 is the valve body, 2 is the outer nut.

[0031] 3 is the sealing gasket, and 4 is the valve stem.

[0032] 5 is the lock nut, 6 is the washer.

[0033] 7 is a PTFE composite sealing ring, and 8 is a clamping block.

[0034] 9 is the valve stem adjusting nut, and 10 is the handle.

[0035] 11 is the second channel, and 12 is the internal thread hole for the outer nut.

[0036] 21 is the first channel, and 22 is the transition pipe connection hole.

[0037] 23 is a tapered hole, 24 is an external thread.

[0038] 25 is the connecting nut, and 26 is the metal retainer.

[0039] 41 is the valve tip, and 42 is the sealing surface.

[0040] 30 is a transition pipe. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model. Unless otherwise defined, the technical or scientific terms used herein should have the ordinary meaning understood by those skilled in the art to which this utility model pertains. The terms "first," "second," and similar words used herein do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Words such as "comprising" mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, but does not exclude other elements or objects. Words such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0042] like Figure 1 , Figure 2 As shown, the present invention relates to a pressure gauge valve for a marine non-welded hydraulic piping system, comprising a valve body 1, the valve body 1 having a valve cavity extending vertically, and a valve stem 4 disposed within the valve cavity; the valve stem 4 is threadedly connected to the valve body 1 and divides the valve cavity into an upper cavity and a lower cavity; a handle 10 is fixedly connected to the upper end of the valve stem 4; a valve tip 41 with a conical surface is formed at the lower end of the valve stem 4; and an inwardly protruding sealing surface 42 is formed in the bottom cavity of the valve cavity.

[0043] A washer 6 and a PTFE combined sealing ring 7 are provided between the valve stem 4 and the upper cavity of the valve chamber; a clamping block 8 is provided at the upper end of the valve body 1, and the clamping block 8 is positioned above the PTFE combined sealing ring 7 and the washer 6; a valve stem adjusting nut 9 is sleeved on the outside of the clamping block 8, and the valve stem adjusting nut 9 is threadedly connected to the upper end of the valve body 1; a locking nut 5 is provided below the valve stem adjusting nut 9; the locking nut 5 is threadedly connected to the valve body 1;

[0044] During installation, first insert the valve stem 4 into the valve cavity; then, put the gasket 6 and the PTFE combination sealing ring 7 onto the valve stem 4 in sequence; finally, put the clamping block 8 onto the valve stem 4 and extend it into the upper cavity of the valve cavity.

[0045] The locking nut 5 and the valve stem adjusting nut 9 are sequentially placed on the upper end of the valve body 1; the valve stem adjusting nut 9 is tightened, and the valve stem adjusting nut 9 can apply pressure to the gasket 6 and the PTFE combined sealing ring 7 through the clamping block 8, thereby achieving a seal between the valve stem 4 and the valve body 1; the locking nut 5 can achieve the locking and positioning of the valve stem adjusting nut 9.

[0046] This utility model prevents media leakage by setting a gasket 6 and a PTFE combined sealing ring 7 between the valve stem 4 and the valve body 1;

[0047] This invention adjusts the pressure provided by the clamping block 8 to the gasket 6 and PTFE combined sealing ring 7 by adjusting the valve stem adjusting nut 9, thereby ensuring its sealing effect without affecting the rotation of the valve stem 4.

[0048] The lower end of the valve body 1 serves as the connection end of the transition pipe 30; the lower end of the valve body 1 forms an external thread 24;

[0049] The lower end of the valve body 1 is provided with a transition pipe connection hole 22, and the interface of the transition pipe connection hole 22 forms a tapered hole 23 that is smaller at the top and larger at the bottom; the lower end of the valve body 1 serves as the P2 port, which is used to connect to the system pipeline; the P2 port serves as the inlet of the pressure gauge valve and is connected to the inlet connector.

[0050] like Figure 3 As shown, the lower end of the valve body 1 is connected to the upper end of the transition pipe 30 through the transition pipe connection hole 22, and the lower end of the transition pipe 30 is inserted into the hydraulic pipe to be monitored; a connecting nut 25 is fitted on the transition pipe 30; the lower end of the valve body 1 is connected to the connecting nut 25 through the external thread 24; a metal ferrule 26 is provided between the connecting nut 25 and the lower end of the valve body 1.

[0051] The connecting nut 25 has a transition pipe through hole and an internal thread hole. The transition pipe through hole is used to pass through the transition pipe 30, and the internal thread hole is used to connect to the external thread 24 at the lower end of the valve body 1. The diameter of the internal thread hole is larger than that of the transition pipe through hole. The lower end of the internal thread hole forms an inner conical surface of the nut, and the lower end of the metal ferrule 26 forms a ferrule conical surface. The ferrule conical surface matches the inner conical surface of the nut.

[0052] The hardness of the connecting nut 25 is greater than that of the metal ferrule 26;

[0053] During installation, first insert the upper end of the transition pipe 30 into the pipe connection hole 22 at the lower end of the valve body 1; then, put the connecting nut 25 with the built-in metal sleeve 26 onto the transition pipe 30; gradually tighten the connecting nut 25 and the external thread 24 at the lower end of the valve body 1; during the process of gradually tightening the connecting nut 25 and the lower end of the valve body 1, the connecting nut 25 applies pressure to the metal sleeve 26, the metal sleeve 26 deforms, and the upper end of the metal sleeve 26 forms a conical surface that fits with the conical hole 23 of the valve body 1, so that the metal sleeve 26 evenly bites the transition pipe 30 to form an effective seal, thereby fixing the valve body 1 to the hydraulic pipeline to be monitored through the transition pipe 30;

[0054] During installation, this utility model only requires a mounting hole matching the transition pipe 30 to be opened on the hydraulic pipeline to be monitored. The valve body and the hydraulic pipeline to be monitored can be fixedly connected through the transition pipe 30. Therefore, this utility model can be applied to pipelines of different diameters, thereby enabling the standardization of pressure gauges or pressure sensors in hydraulic pipeline systems.

[0055] This invention achieves a partial sealing connection by compressing and deforming the metal sleeve 26 through external force during installation, thereby avoiding local leakage. No open flame is required during installation, enabling a non-welded connection. This not only improves the reliability of the connection parts but also provides advantages such as non-welded connection, strong corrosion resistance, and convenient maintenance.

[0056] The valve body 1 is connected to the side of the outer nut 2; the inner thread hole 12 of the outer nut 2 is used to connect a mechanical pressure gauge or an electronic pressure sensor; a PTFE (polytetrafluoroethylene) sealing gasket 3 is provided inside the outer nut 2; the sealing gasket 3 is provided between the side end face of the valve body 1 and the pressure gauge or pressure sensor.

[0057] The internal threaded hole 12 of the outer nut 2 serves as port P1, which is connected to the second channel 11; port P1 serves as the outlet of the pressure gauge valve.

[0058] Furthermore, a sealing ring is provided between the side of the valve body 1 and the outer nut 2;

[0059] Preferably, port P1 is perpendicular to the center of valve body 1, thus forming a mutually perpendicular arrangement with port P2;

[0060] A first channel 21 is provided at the bottom of the valve cavity, and the first channel 21 connects the P2 port of the valve body 1 to the valve cavity;

[0061] A second channel 11 is provided on the side of the valve cavity, and the second channel 11 connects the P1 port of the valve body 1 to the valve cavity.

[0062] By rotating the handle 10, the valve stem 4 can be rotated, which can cause the valve stem 4 to move up and down relative to the valve cavity;

[0063] When the valve stem 4 moves upward until its valve tip 41 is far away from the sealing surface 42 of the valve cavity, the first channel 21 is connected to the second channel 11. At this time, the fluid from the hydraulic pipeline to be monitored can flow through the first channel 21, through the valve cavity and the second channel 11 into the pressure gauge or pressure sensor, thereby realizing the connection of the oil circuit between the hydraulic pipeline and the pressure gauge or pressure sensor.

[0064] When the valve stem 4 moves downward until its valve tip 41 contacts the sealing surface 42 of the valve cavity, the valve stem 4 isolates the first channel 21 from the second channel 11. At this time, the fluid from the hydraulic pipeline to be monitored cannot flow into the pressure gauge or pressure sensor, thereby achieving the cut-off of the oil circuit between the hydraulic pipeline and the pressure gauge or pressure sensor.

[0065] This invention utilizes a lifting and rotating valve stem, where the valve stem is raised or lowered by rotating the handle to open and close the valve. This structure facilitates the disassembly of pressure gauges or pressure sensors. If the pressure gauge or pressure sensor needs calibration or replacement, there is no need to disconnect the ship's hydraulic system; simply closing the pressure gauge valve allows for the repair or replacement of the pressure gauge or pressure sensor.

[0066] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A pressure gauge valve for marine non-welded hydraulic piping systems, characterized in that, include: The valve body has a valve cavity extending vertically; a transition pipe connection hole is provided at the lower end of the valve body, and the transition pipe connection hole is connected to the lower cavity of the valve cavity through a first channel to form the inflow channel of the pressure gauge valve. A valve stem is disposed within the valve cavity; the valve stem is threadedly connected to the valve body and divides the valve cavity into an upper cavity and a lower cavity; the lower end of the valve stem forms a valve tip, and the lower cavity forms an inwardly convex sealing surface; and An outer nut is attached to the side of the valve body; the internal threaded hole of the outer nut is connected to the lower cavity of the valve chamber through a second channel, forming the outflow channel of the pressure gauge valve.

2. The pressure gauge valve for marine non-welded hydraulic piping systems according to claim 1, characterized in that, The lower end of the valve body is connected to one end of the transition pipe through the transition pipe connection hole, and the other end of the transition pipe is inserted into the hydraulic pipe to be monitored.

3. The pressure gauge valve for marine non-welded hydraulic piping systems according to claim 2, characterized in that, A connecting nut is fitted onto the transition pipe; the connecting nut is connected to the external thread at the lower end of the valve body via its internal thread; a metal ferrule is provided between the connecting nut and the lower end of the valve body; the hardness of the connecting nut is greater than the hardness of the metal ferrule.

4. The pressure gauge valve for marine non-welded hydraulic piping systems according to claim 3, characterized in that, The lower end of the internal threaded hole of the connecting nut is formed with an inner conical surface; the lower end of the metal ferrule is formed with a ferrule conical surface, and the ferrule conical surface matches the inner conical surface of the nut.

5. The pressure gauge valve for marine non-welded hydraulic piping systems according to claim 4, characterized in that, The interface of the transition pipe connection hole forms a conical hole; the upper end of the metal sleeve forms a conical surface that fits into the conical hole.

6. The pressure gauge valve for marine non-welded hydraulic piping systems according to claim 1, characterized in that, The outer nut is connected to a pressure gauge or pressure sensor through an internal threaded hole.

7. The pressure gauge valve for marine non-welded hydraulic piping systems according to claim 1, characterized in that, The first channel is located below the valve chamber; the second channel is located on the side of the valve chamber.

8. The pressure gauge valve for marine non-welded hydraulic piping systems according to claim 1, characterized in that, The valve stem is fixedly connected to the handle.

9. The pressure gauge valve for marine non-welded hydraulic piping systems according to claim 1, characterized in that, A clamping block is provided at the upper end of the valve body, and the clamping block is located above the upper cavity; a valve stem adjusting nut is sleeved on the outside of the clamping block, and the valve stem adjusting nut is threadedly connected to the upper end of the valve body; a sealing element is provided in the upper cavity.

10. The pressure gauge valve for marine non-welded hydraulic piping systems according to claim 1, characterized in that, A locking nut is provided below the valve stem adjusting nut, and the locking nut is connected to the valve body by threads.

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