Pressure gauge for hydraulic station

Abstract

The utility model discloses a pressure gauge for a hydraulic station, which comprises a gauge frame, a dial is arranged in the gauge frame, a pointer is rotatably connected to the center of the dial, a bent pipe is connected to the lower part of the gauge frame in a penetrating manner, a switch is fixedly connected to the lower part of the bent pipe, an opening is formed in the rear part of the gauge frame, and the dial is arranged in the opening. A rubber belt is fixedly connected to the upper side of the rear portion of the gauge frame, a plug is fixedly connected to the other end of the rubber belt, and the size of the inner side of the plug is the same as that of the opening. Through the structure, the instant pressure of liquid on the hydraulic pressure gauge can be relieved during pressure detection, and a switch of the pressure gauge can be automatically controlled to prevent the pressure gauge from being pressed for a long time; and a lubricant can be added into the pressure gauge, so that internal parts can be effectively prevented from rusting while being lubricated.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure gauges, in particular to a pressure gauge for a hydraulic station. Background Art

[0002] A pressure gauge is an instrument used to measure fluid pressure. It usually consists of the following parts: Measuring element: The measuring element is the core part of the pressure gauge, which is used to sense the pressure exerted on it by the fluid. Common measuring elements include spring tubes, pressure diaphragms and liquid columns. Pointer and dial: The pressure gauge is usually equipped with a pointer and a dial to display the pressure value. The pointer moves according to the changes in the measuring element to indicate the current pressure value, and the corresponding pressure unit is marked on the dial. Shell: The shell is the outer packaging of the pressure gauge, usually made of metal or plastic, which is used to protect the internal components from environmental influences and mechanical damage. Connectors: Connectors are used to connect the pressure gauge to the fluid system in order to measure the fluid pressure. Connectors usually include interfaces such as threads or flanges to install and fix the pressure gauge. The working principle of the pressure gauge is to use the bending or movement of the measuring element to reflect the pressure exerted on it by the fluid. When the fluid pressure increases, the measuring element will produce corresponding deformation, so that the pointer indicates the corresponding pressure value on the dial.

[0003] Pressure gauges are widely used in various industrial fields and application scenarios to monitor and control the pressure in fluid systems to ensure normal operation of the system and provide safety protection.

[0004] In the prior art, most pressure gauges are short straight tubes. The liquid after turning on the hydraulic press will exert an instantaneous pressure on the pressure gauge. Since no buffer is provided, the precision parts inside the hydraulic gauge are easily damaged. Most pressure gauges are turned on and off along with the switching of the hydraulic press and cannot be self-controlled. Long-term pressure can easily cause the parts inside the pressure gauge to deform and reduce its accuracy. Most pressure gauges cannot be lubricated from the outside, which causes the internal parts to rust and become difficult to move during long-term use, thus affecting the accuracy of the pressure gauge. Utility Model Content

[0005] The purpose of the utility model is to provide a pressure gauge for a hydraulic station, which can alleviate the instantaneous pressure of the liquid on the hydraulic gauge when detecting the pressure, can automatically control the switch of the pressure gauge to avoid it being under pressure for a long time, and can add lubricant to the inside of the pressure gauge to lubricate the internal parts and effectively prevent them from rusting.

[0006] To achieve the above-mentioned purpose, a pressure gauge for a hydraulic station is provided, comprising a gauge frame, a dial is arranged inside the gauge frame, a pointer is rotatably connected at the center of the dial, a fixing hole is provided at the lower side of the dial, a transparent cover is provided on the front side of the gauge frame, a bent pipe is connected through the lower part of the gauge frame, a switch is fixedly connected at the lower part of the bent pipe, a thread is provided at the lower end of the bent pipe, a positioning block is fixedly connected to the outer surface of the upper end of the bent pipe, a positioning hole is provided in front of the positioning block, a groove is provided on the upper surface of the positioning block, a spring tube is fixedly connected to the inner surface of the upper end of the bent pipe, the other end of the spring tube is rotatably connected to a connecting rod, the lower end of the connecting rod is rotatably connected to a fan-shaped gear, the middle part of the fan-shaped gear is rotatably connected to a positioning shaft, the left side of the fan-shaped gear is meshedly connected to a central gear, a coil spring is fixedly connected to the rear of the central gear, and the left end of the coil spring is fixedly connected to a fixing block.

[0007] According to the pressure gauge for a hydraulic station, an opening is provided at the rear of the gauge frame, a rubber belt is fixedly connected to the upper rear side of the gauge frame, a plug is fixedly connected to the other end of the rubber belt, and the inner side of the plug is the same size as the opening.

[0008] According to the pressure gauge for a hydraulic station, the center of the pointer is fixedly connected to the central gear, and the rear end of the central gear is rotatably connected to the inner rear center of the gauge frame.

[0009] According to the pressure gauge for a hydraulic station, the rear end of the positioning shaft is fixedly connected to the inner rear of the gauge frame.

[0010] According to the pressure gauge for a hydraulic station, the rear end of the fixing block is fixedly connected to the inner rear of the gauge frame.

[0011] According to the pressure gauge for a hydraulic station, the left end of the spring tube is communicated with the bent pipe, and the right end of the spring tube is sealed.

[0012] According to the pressure gauge for a hydraulic station, the width of the groove is greater than the thickness of the sector gear.

[0013] According to the pressure gauge for a hydraulic station, the fixing hole corresponds to the positioning hole and has the same radius, and an internal thread is provided inside the positioning hole.

[0014] The utility model has the following beneficial effects:

[0015] 1. Compared with the prior art, the pressure gauge for the hydraulic station can provide certain protection for the precision parts inside the gauge frame by providing a bent pipe, thereby avoiding instantaneous impact and preventing damage to the precision parts inside the gauge frame caused by the instantaneous impact. By providing a switch, it can independently control whether to detect the pressurized liquid, thereby preventing the pressure gauge from measuring inaccurately due to irreversible deformation of the spring tube caused by long-term pressure measurement. By providing an opening, lubricant can be added to the inside of the equipment at a later stage to prevent rusting of internal parts.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0018] Figure 1 This is a front view of a pressure gauge for a hydraulic station according to the utility model;

[0019] Figure 2 This is a three-dimensional diagram of a positioning block of a pressure gauge for a hydraulic station of the utility model;

[0020] Figure 3 This is a cross-sectional view of a bent pipe of a pressure gauge for a hydraulic station according to the utility model;

[0021] Figure 4 This is a three-dimensional diagram of the rear side of a gauge frame of a pressure gauge for a hydraulic station according to the utility model;

[0022] Figure 5 The utility model is a schematic diagram of the connection between the central gear and the pointer of a pressure gauge for a hydraulic station.

[0023] Legend:

[0024] 1. Frame; 2. Dial; 3. Pointer; 4. Fixing hole; 5. Transparent cover; 6. Bend pipe; 7. Positioning block; 8. Positioning hole; 9. Groove; 10. Spring tube; 11. Connecting rod; 12. Sector gear; 13. Positioning shaft; 14. Center gear; 15. Coil spring; 16. Fixing block; 17. Opening; 18. Rubber belt; 19. Plug;

[0025] 61. Switch; 62. Thread. DETAILED DESCRIPTION

[0026] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0027] Reference Figure 1-5 The utility model embodiment is a pressure gauge for a hydraulic station, which includes a gauge frame 1, a dial 2 is arranged inside the gauge frame 1, a pointer 3 is rotatably connected at the center of the dial 2, a fixing hole 4 is opened at the lower side of the dial 2, a transparent cover 5 is arranged on the front side of the gauge frame 1, an opening 17 is opened at the rear of the gauge frame 1, a rubber belt 18 is fixedly connected to the upper rear side of the gauge frame 1, a plug 19 is fixedly connected to the other end of the rubber belt 18, the inner side size of the plug 19 is the same as the size of the opening 17, a bent pipe 6 is connected through the bottom of the gauge frame 1, a switch 61 is fixedly connected to the bottom of the bent pipe 6, a thread 62 is arranged at the lower end of the bent pipe 6, a positioning block 7 is fixedly connected to the outer surface of the upper end of the bent pipe 6, a positioning hole 8 is opened in front of the positioning block 7, the fixing hole 4 corresponds to the positioning hole 8, and has the same radius, an internal thread is arranged inside the positioning hole 8, and the upper A groove 9 is provided on the surface, and a spring tube 10 is fixedly connected to the inner surface of the upper end of the curved tube 6. The left end of the spring tube 10 is communicated with the curved tube 6, and the right end of the spring tube 10 is sealed. The other end of the spring tube 10 is rotatably connected to a connecting rod 11, and the lower end of the connecting rod 11 is rotatably connected to a fan gear 12. The width of the groove 9 is greater than the thickness of the fan gear 12. The middle part of the fan gear 12 is rotatably connected to a positioning shaft 13, and the rear of the positioning shaft 13 is fixedly connected to the inner rear of the watch frame 1. The left side of the fan gear 12 is meshed with a center gear 14, and the center of the pointer 3 is fixedly connected to the center gear 14. The rear end of the center gear 14 is rotatably connected to the center of the inner rear of the watch frame 1. A coil spring 15 is fixedly connected to the rear of the center gear 14, and the left end of the coil spring 15 is fixedly connected to a fixing block 16, and the rear end of the fixing block 16 is fixedly connected to the inner rear of the watch frame 1.

[0028] The above structure, by providing a bent pipe 6, can make liquid flow into the spring tube 10. By providing a spring tube 10, it can produce a deformation response to the liquid pressure. By providing a connecting rod 11, the spring tube 10 and the fan gear 12 can be connected. By providing a positioning shaft 13, the fan gear 12 can be positioned and supported so that it can rotate with the positioning shaft 13 as the center. By providing a fan gear 12, the connecting rod 11 can be raised under the deformation of the spring tube 10, and the connecting rod 11 drives the fan gear 12 to rotate. The center gear 14 can be rotated under the drive of the fan gear 12. The center gear 14 links the pointer 3 to rotate at the same time, so that the pointer 3 points to the scale corresponding to the liquid pressure. By providing a coil spring 15, energy is accumulated to shrink when the center gear 14 rotates. When the internal pressure of the spring tube 10 returns to zero, the coil spring 15 releases energy to rebound, the center gear 14 returns to its original position, and the pointer 3 returns to zero.

[0029] The fixing hole 4 corresponds to the positioning hole 8 , and the positioning hole 8 is provided with an internal thread, so that the dial 2 can be connected to the positioning block 7 through an external bolt.

[0030] By providing the bent pipe 6 , the precision parts inside the meter frame 1 can be protected to a certain extent, thereby avoiding instantaneous impact and preventing the precision parts inside the meter frame 1 from being damaged due to the instantaneous impact.

[0031] By providing the switch 61, it is possible to independently control whether to detect the pressurized liquid, thereby preventing the pressure gauge from measuring the pressure inaccurately due to irreversible deformation of the spring tube 10 caused by long-term pressure measurement.

[0032] By providing an opening 17, lubricant can be added to the inside of the device at a later stage to prevent internal parts from rusting. By providing a plug 19, the opening 17 can be sealed when no lubricant is added to prevent impurities from entering the inside. By providing a rubber belt 18, the watch frame 1 and the plug 19 can be connected to prevent the plug 19 from falling off.

[0033] Working principle: The hydraulic station uses a pressure gauge. When in use, first thread the elbow 6 to the device to be tested, turn on the switch 61, and allow the liquid to flow into the spring tube 10. The spring tube 10 is deformed by pressure and the right side is lifted, driving the connecting rod 11 to rise, and the connecting rod 11 drives the fan gear 12 to rotate, and the fan gear 12 drives the center gear 14 to rotate. The center gear 14 drives the pointer 3 to rotate together, so that the pointer 3 points to the scale corresponding to the liquid pressure. At this time, the measurement process ends. When the switch 61 is closed, the internal pressure of the spring tube 10 returns to zero, and the spring tube 10 returns to its position. Under the joint action of the coil spring 15 and the fan gear 12, the center gear 14 returns to its position, that is, the pointer 3 returns to zero.

[0034] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A pressure gauge for a hydraulic station, characterized in that: The invention comprises a meter frame (1), wherein a dial (2) is arranged inside the meter frame (1), a pointer (3) is rotatably connected at the center of the dial (2), a fixing hole (4) is provided at the lower side of the dial (2), a transparent cover (5) is provided at the front side of the meter frame (1), a curved pipe (6) is connected through the lower side of the meter frame (1), a switch (61) is fixedly connected at the lower side of the curved pipe (6), a thread (62) is provided at the lower end of the curved pipe (6), a positioning block (7) is fixedly connected to the outer surface of the upper end of the curved pipe (6), a positioning hole (8) is provided in front of the positioning block (7), and the upper surface of the positioning block (7) is fixedly connected to the lower side of the curved pipe (6). A groove (9) is provided on the surface, a spring tube (10) is fixedly connected to the inner surface of the upper end of the curved tube (6), the other end of the spring tube (10) is rotatably connected to a connecting rod (11), the lower end of the connecting rod (11) is rotatably connected to a fan-shaped gear (12), the middle part of the fan-shaped gear (12) is rotatably connected to a positioning shaft (13), the left side of the fan-shaped gear (12) is meshedly connected to a central gear (14), the front of the central gear (14) is fixedly connected to a pointer (3), the rear of the central gear (14) is fixedly connected to a coil spring (15), and the left end of the coil spring (15) is fixedly connected to a fixing block (16).

2. A pressure gauge for a hydraulic station according to claim 1, characterized in that: An opening (17) is provided at the rear of the watch frame (1), a rubber band (18) is fixedly connected to the upper rear side of the watch frame (1), a plug (19) is fixedly connected to the other end of the rubber band (18), and the inner side size of the plug (19) is the same as the size of the opening (17).

3. A pressure gauge for a hydraulic station according to claim 1, characterized in that: The center of the pointer (3) is fixedly connected to the central gear (14), and the rear end of the central gear (14) is rotatably connected to the inner rear center of the watch frame (1).

4. A pressure gauge for a hydraulic station according to claim 1, characterized in that: The rear of the positioning shaft (13) is fixedly connected to the inner rear of the watch frame (1).

5. A pressure gauge for a hydraulic station according to claim 1, characterized in that: The rear end of the fixing block (16) is fixedly connected to the inner rear of the meter frame (1).

6. A pressure gauge for a hydraulic station according to claim 1, characterized in that: The left end of the spring tube (10) is communicated with the bent tube (6), and the right end of the spring tube (10) is sealed.

7. A pressure gauge for a hydraulic station according to claim 1, characterized in that: The width of the groove (9) is greater than the thickness of the sector gear (12).

8. A pressure gauge for a hydraulic station according to claim 1, characterized in that: The fixing hole (4) corresponds to the positioning hole (8) and has the same radius, and an internal thread is provided inside the positioning hole (8).

Images