Wellhead pressure gauge capable of reducing interference of environmental factors

Abstract

The invention relates to the related technical field of wellhead pressure gauges, and discloses a wellhead pressure gauge capable of reducing interference of environmental factors, which comprises a pressure gauge shell, a reading dial is mounted in the pressure gauge shell, a pointer assembly is rotatably mounted on the reading dial, a numerical value display module is mounted on the reading dial, and a connecting function device is mounted on the pressure gauge shell. The connecting function device comprises a communicating block, the communicating block is provided with a communicating groove, and the communicating block is provided with a function semi-ring; according to the wellhead pressure gauge capable of reducing the interference of the environmental factors, through setting of a precision adjustable function, the rotation amount of a pointer in unit volume can be changed by changing the volume in a pointer transmission liquid groove in the pressure gauge shell, so that the function of changing the numerical value precision adjustment of the pressure gauge through a top control structure is achieved; therefore, the pressure gauge has a higher-precision numerical value indication function.

Description

Technical Field

[0001] The invention relates to the technical field related to wellhead pressure gauges, and in particular to a wellhead pressure gauge capable of reducing interference from environmental factors. Background Art

[0002] Oil is an important natural resource. During the oil extraction process, oil is collected through oil wellheads and extraction equipment. The wellhead pressure gauge is installed at the oil wellhead to reflect the internal oil pressure for extraction personnel to read and record. However, factors such as the turbulent extraction environment can easily cause the internal diaphragm and hydraulic cavity of the pressure gauge to vibrate under shock, resulting in unstable pointer readings. At the same time, when the pressure changes frequently or the pressure is higher than the indicator dial scale, the accurate pressure value cannot be known. Summary of the invention

[0003] The object of the present invention is to provide a wellhead pressure gauge which reduces the interference of environmental factors, so as to overcome the above-mentioned defects in the prior art.

[0004] The present invention is achieved through the following technical solutions.

[0005] A wellhead pressure gauge for reducing interference from environmental factors of the present invention comprises a pressure gauge case, a dial is installed in the pressure gauge case, a pointer assembly is rotatably installed on the dial, a numerical display module is installed on the dial, a connection function device is installed on the pressure gauge case, the connection function device comprises a connecting block, the connecting block is provided with a connecting groove, a functional half ring is installed on the connecting block, a transmission liquid groove is provided in the functional half ring, a sealing ring plate is installed in the transmission liquid groove, an adjustable airbag strip with adjustable volume is installed on the inner side of the sealing ring plate, two transmission arc plates are slidably installed in the transmission liquid groove, and a transmission arc plate is installed between the two transmission arc plates. There is a spring airbag, and the transmission arc plate on the lower side is installed with a spring airbag. The spring airbag is rotatably installed with a connecting rod, and the end of the connecting rod is connected to the pointer assembly. The connecting block is installed with a pressure connecting device, and the pressure connecting device includes a connecting body. A pressure transmission chamber is provided in the connecting body, and the pressure transmission chamber is connected to the connecting groove. The pressure transmission chamber, the connecting groove and the transmission liquid tank are filled with hydraulic oil. An upper diaphragm is slidably installed in the pressure transmission chamber, and the upper diaphragm array is provided with connecting holes. A lower diaphragm is slidably installed in the pressure transmission chamber, and the distance between the lower diaphragm and the upper diaphragm is adjustable.

[0006] A further technical solution is that the pressure gauge case is installed with an extension rod, the extension rod is installed with an adjustment control device, the adjustment control device includes an adjustment shell, two air pressure regulating tubes are installed in the adjustment shell, an air pressure slider is slidably installed in the air pressure regulating tube, a control valve is installed in the air pressure regulating tube, the air pressure regulating tube on the right is connected to an air transfer tube, and the end of the air transfer tube is connected to the adjustment airbag strip.

[0007] According to a further technical solution, two adjusting knobs are rotatably mounted on the outer wall of the adjusting shell, and the adjusting knobs are equipped with transmission lines. The ends of the transmission lines are connected to the pneumatic slider, and the pneumatic slider is equipped with a pressure spring.

[0008] According to a further technical solution, a data display screen is installed on the top of the outer wall of the regulating shell.

[0009] A further technical solution is that a spacing cylinder is installed between the upper diaphragm and the lower diaphragm, a spacing push rod is symmetrically slidably installed in the spacing cylinder, the spacing push rod is installed with a return spring, the spacing cylinder is connected to a spacing air pipe, and the end of the spacing air pipe is connected to the air pressure regulating pipe on the left.

[0010] According to a further technical solution, a sliding side groove is provided on the inner wall of the connector, a sliding block is slidably installed in the sliding side groove, a sliding spring is installed in the sliding block, the upper diaphragm is fixedly installed in the sliding block, and the lower diaphragm is slidably installed in the sliding block.

[0011] According to a further technical solution, an adjustment slot is provided on the inner wall of the sliding block, an adjustment slider is slidably installed in the adjustment slot, the lower diaphragm is installed on the adjustment slider, and a support spring is installed on the adjustment slider.

[0012] According to a further technical solution, an inner wall of the functional semi-ring is provided with an inner wall slide groove, the spring airbag is slidably mounted in the inner wall slide groove, and the spring airbag is mounted with a sealing telescopic strip.

[0013] According to a further technical solution, the outer wall of the connector is provided with threads.

[0014] Beneficial effects of the present invention:

[0015] A wellhead pressure gauge for reducing interference from environmental factors of the present invention is provided with an adjustable precision function. The pointer transmission liquid tank inside the pressure gauge housing can change the amount of rotation of the pointer per unit volume by changing the volume of the tank, thereby achieving the function of adjusting the precision of the pressure indication number by changing the top control structure, thereby enabling the pressure gauge to have a higher precision numerical indication function. At the same time, when the pressure change frequency is high and the pointer moves frequently, the precision coefficient can be adjusted to reduce the pointer movement, thereby avoiding the problem that the pointer is too sensitive due to the precision and affects the degree due to frequent movement.

[0016] A wellhead pressure gauge for reducing interference from environmental factors of the present invention realizes a variable pressure value range function of the pressure gauge through the setting of a variable reference function, and a pressure diaphragm with a double-layer structure at the bottom. The distance between the two pressure diaphragms can be changed through the transmission of the top control structure, so that the internal hydraulic oil is filled between the two diaphragms, thereby reducing the hydraulic oil content in the transmission tank and changing the internal pointer reference, so that the pressure gauge has a wider pressure value indication range, and the reading is superimposed with the reference deviation reading to obtain the final reading, thereby avoiding the problem that the pointer is at the maximum value and cannot determine the accurate pressure value under some high pressure conditions, and at the same time, with the adjustable accuracy function, a higher accuracy and range of pressure value reading effect can be achieved;

[0017] A wellhead pressure gauge for reducing interference from environmental factors of the present invention is provided with an anti-interference pressure diaphragm. The indication of the pressure gauge pointer is realized by the pressure diaphragm pushing the hydraulic oil in the transmission tank under the effect of pressure. When the environment is under the effect of vibration, the pressure diaphragm is prone to cause the pointer indication to be moved under the vibration, resulting in the problem of inaccurate indication and large error. The internal double-layer pressure diaphragm has a hole structure in which the upper diaphragm is filled with hydraulic oil, thereby increasing the weight coefficient of the diaphragm structure to offset the effect of environmental vibration factors, thereby making the reading pointer more stable and reducing environmental interference. At the same time, the spacing between the two diaphragms can be adjusted to further improve the stability of the indication while achieving a wider indication range. At the same time, in conjunction with the adjustment of accuracy requirements, the pressure gauge can achieve the effect of having a stronger anti-interference ability and a more accurate reading. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 yes Figure 1 An enlarged schematic diagram of the structure of the middle connection functional device 15;

[0022] Figure 3 yes Figure 1 An enlarged schematic diagram of the structure of the medium pressure communication device 20;

[0023] Figure 4 yes Figure 1 An enlarged schematic diagram of the structure of the middle adjustment control device 13;

[0024] Figure 5 yes Figure 2 A is a schematic diagram of the enlarged structure of the middle part;

[0025] Figure 6 yes Figure 3 A schematic diagram of the enlarged structure of B; DETAILED DESCRIPTION

[0026] Combine the following Figure 1-6 The present invention is described in detail. For the convenience of description, the directions mentioned below are defined as follows: the up, down, left, right, front, and back directions mentioned below are the same as Figure 1 The up-down, left-right, front-back directions of the projection relationship itself are consistent.

[0027] Combined with Figure 1-6 The wellhead pressure gauge for reducing interference from environmental factors comprises a pressure gauge housing 11, a dial 17 is installed in the pressure gauge housing 11, a pointer assembly 18 is rotatably installed in the dial 17, a numerical display module 19 is installed in the dial 17, a connecting function device 15 is installed in the pressure gauge housing 11, and the connecting function device 15 comprises a connecting block 21, the connecting block 21 is provided with a connecting groove 22, a functional semi-ring 23 is installed in the connecting block 21, a transmission liquid groove 24 is provided in the functional semi-ring 23, a sealing ring plate 26 is installed in the transmission liquid groove 24, a volume-adjustable regulating airbag strip 49 is installed on the inner side of the sealing ring plate 26, two transmission arc plates 45 are slidably installed in the transmission liquid groove 24, and an elastic airbag strip 49 is installed between the two transmission arc plates 45. The spring airbag 46 is installed on the transmission arc plate 45 at the lower side, and the spring airbag 46 is rotatably installed with a connecting rod 47, and the end of the connecting rod 47 is connected to the pointer assembly 18. The connecting block 21 is installed with a pressure connecting device 20, and the pressure connecting device 20 includes a connecting body 28, and a pressure transmission chamber 37 is provided in the connecting body 28. The pressure transmission chamber 37 is connected to the connecting groove 22. The pressure transmission chamber 37, the connecting groove 22 and the transmission liquid groove 24 are filled with hydraulic oil. An upper diaphragm 32 is slidably installed in the pressure transmission chamber 37, and the upper diaphragm 32 array is provided with connecting holes 33. A lower diaphragm 30 is slidably installed in the pressure transmission chamber 37, and the distance between the lower diaphragm 30 and the upper diaphragm 32 is adjustable.

[0028] During operation, it is connected and installed with the oil wellhead through the pressure connecting device 20, and the lower diaphragm 30 is pushed by the internal oil pressure, so that the hydraulic oil in the pressure transmission chamber 37 is pressed into the transmission liquid groove 24 under the thrust, thereby driving the transmission arc plate 45 to slide, so that the connecting rod 47 drives the pointer assembly 18 to rotate to perform the numerical indication function, and the volume of the regulating airbag strip 49 is expanded through transmission control, so that the volume of the transmission liquid groove 24 can be reduced, and at the same time, the thickness of the spring airbag 46 between the two transmission arc plates 45 is changed, so that the transmission arc plate 45 is always close to the regulating airbag strip 49, and the volume of the transmission liquid groove 24 is reduced, so that the unit volume of hydraulic oil drives the pointer reading to rotate in a larger range, thereby improving the reading accuracy, and the final accurate reading is obtained by multiplying the reading with the display coefficient on the right side of the numerical display module 19. When the environmental vibration is large and the pressure value is frequently dialed and the reading cannot be stabilized , the volume of the transmission fluid tank 24 can be increased by reducing the volume of the regulating airbag strip 49, thereby reducing the effect of the unit volume pressure change on the pointer, thereby making the indication more stable. At the same time, when the environmental vibration has a great impact and the pointer assembly 18 points close to or even exceeds the range of the indicator disk 17, the spacing between the upper diaphragm 32 and the lower diaphragm 30 can be changed so that more hydraulic oil enters the space within the spacing, thereby reducing the volume of the hydraulic oil in the pressure transmission chamber 37, so that the pointer moves back and the pressure value reading range is increased. The final pressure value is obtained by adding the read value to the value displayed on the left side of the numerical display module 19. The adjustable effect of the hydraulic oil content between the upper diaphragm 32 and the lower diaphragm 30 allows more hydraulic oil to be filled therein, thereby increasing the gravity of the pressure diaphragm structure composed of the upper diaphragm 32 and the lower diaphragm 30, thereby improving the stability under vibration.

[0029] Preferably, the pressure gauge housing 11 is installed with an extension rod 12, and the extension rod 12 is installed with an adjustment control device 13, and the adjustment control device 13 includes an adjustment shell 39, and two air pressure regulating tubes 40 are installed in the adjustment shell 39, and an air pressure slider 42 is slidably installed in the air pressure regulating tube 40, and a control valve 41 is installed in the air pressure regulating tube 40, and the air pressure regulating tube 40 on the right is connected to the air transfer tube 25, and the end of the air transfer tube 25 is connected to the adjustment air bag strip 49.

[0030] The accuracy and range of pneumatic transmission are changed by adjusting the position of the pneumatic slider 42 in the pneumatic pressure regulating tube 40, the connectivity and airtightness of the pneumatic pressure regulating tube 40 are controlled by the control valve 41, and the volume of the airbag strip 49 is changed by the pneumatic output of the right pneumatic pressure regulating tube 40 to change the accuracy.

[0031] Preferably, two adjusting knobs 65 are rotatably mounted on the outer wall of the adjusting housing 39 , and the adjusting knobs 65 are mounted with a transmission line 43 . The end of the transmission line 43 is connected to the pneumatic slider 42 , and the pneumatic slider 42 is mounted with a pressure spring 44 .

[0032] The control valve 41 is connected, and the adjusting knob 65 is turned to control the transmission line 43 to loosen or tighten, so that the air pressure slider 42 can slide under the effect of the pressure spring 44, thereby driving the air pressure transmission in the air pressure regulating tube 40.

[0033] Preferably, a data display screen 14 is installed on the top of the outer wall of the adjustment housing 39 .

[0034] The air pressure output of the control valve 41 can be numerically recorded and calculated and displayed through the data display screen 14, thereby achieving a numerical feedback effect of the adjustment coefficient.

[0035] Preferably, a spacing tube 50 is installed between the upper diaphragm 32 and the lower diaphragm 30, a spacing push rod 51 is symmetrically slidably installed in the spacing tube 50, a return spring 52 is installed on the spacing push rod 51, and the spacing tube 50 is connected to a spacing air pipe 53, and the end of the spacing air pipe 53 is connected to the air pressure regulating pipe 40 on the left.

[0036] By changing the position of the air pressure slider 42 in the left air pressure regulating tube 40, the air pressure in the air pressure regulating tube 40 is pushed into the spacing cylinder 50, changing the spacing between the upper diaphragm 32 and the lower diaphragm 30, thereby increasing the capacity of the hydraulic oil therebetween, increasing the gravity of its components, obtaining a wider indication range and improving the vibration resistance effect.

[0037] Preferably, the inner wall of the connecting body 28 is provided with a sliding side groove 34, the sliding side groove 34 is slidably mounted with a sliding block 35, the sliding block 35 is mounted with a sliding spring 36, the sliding block 35 is fixedly mounted with the upper diaphragm 32, and the sliding block 35 is slidably mounted with the lower diaphragm 30.

[0038] Driven by the oil pressure, the sliding block 35 drives the upper diaphragm 32 and the lower diaphragm 30 to slide and transmit the hydraulic oil to drive the pointer assembly 18 to indicate the value.

[0039] Preferably, an adjustment slot 54 is provided on the inner wall of the sliding block 35 , an adjustment slider 55 is slidably installed in the adjustment slot 54 , the lower diaphragm 30 is installed on the adjustment slider 55 , and a support spring 56 is installed on the adjustment slider 55 .

[0040] The spacing cylinder 50 controls the spacing between the lower diaphragm 30 and the upper diaphragm 32 , driving the adjustment slider 55 to change its position in the adjustment slot 54 .

[0041] Preferably, an inner wall of the functional semi-ring 23 is provided with an inner wall sliding groove 48 , the spring airbag 46 is slidably mounted in the inner wall sliding groove 48 , and the spring airbag 46 is mounted with a sealing telescopic strip 27 .

[0042] The sealing effect of the transmission fluid tank 24 is achieved by the sealing expansion strip 27 .

[0043] Preferably, the outer wall of the connector 28 is provided with threads 29 .

[0044] The thread 29 is used to install the rotary seal with the oil wellhead.

[0045] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology in this field to understand the content of the present invention and implement it, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A wellhead pressure gauge for reducing interference from environmental factors, comprising a pressure gauge case, a dial plate installed in the pressure gauge case, a pointer assembly rotatably installed on the dial plate, a numerical display module installed on the dial plate, a connection function device installed on the pressure gauge case, the connection function device comprising a connecting block, the connecting block is provided with a connecting groove, the connecting block is provided with a functional half ring, a transmission liquid groove is provided in the functional half ring, a sealing ring plate is installed in the transmission liquid groove, an adjustable airbag strip with adjustable volume is installed on the inner side of the sealing ring plate, two transmission arc plates are slidably installed in the transmission liquid groove, and a Spring airbag, the transmission arc plate on the lower side is equipped with a spring airbag, the spring airbag is rotatably equipped with a connecting rod, the end of the connecting rod is connected to the pointer assembly, the connecting block is equipped with a pressure connecting device, the pressure connecting device includes a connecting body, a pressure transmission chamber is provided in the connecting body, the pressure transmission chamber is connected to the connecting groove, the pressure transmission chamber, the connecting groove and the transmission liquid tank are filled with hydraulic oil, an upper diaphragm is slidably installed in the pressure transmission chamber, the upper diaphragm array is provided with connecting holes, a lower diaphragm is slidably installed in the pressure transmission chamber, and the distance between the lower diaphragm and the upper diaphragm is adjustable.

2. A wellhead pressure gauge for reducing interference from environmental factors according to claim 1, characterized in that: The pressure gauge housing is installed with an extension rod, and the extension rod is installed with an adjustment control device. The adjustment control device includes an adjustment shell, and two air pressure regulating tubes are installed in the adjustment shell. An air pressure slider is slidably installed in the air pressure regulating tube, and a control valve is installed in the air pressure regulating tube. The air pressure regulating tube on the right is connected to an air transfer tube, and the end of the air transfer tube is connected to the adjustment air bag strip.

3. A wellhead pressure gauge for reducing interference from environmental factors according to claim 2, characterized in that: Two adjusting rotating knobs are rotatably mounted on the outer wall of the adjusting shell, and the adjusting rotating knobs are mounted with transmission lines. The ends of the transmission lines are connected to the pneumatic slider, and the pneumatic slider is mounted with a pressure spring.

4. A wellhead pressure gauge for reducing interference from environmental factors according to claim 2, characterized in that: A data display screen is installed on the top of the outer wall of the regulating shell.

5. A wellhead pressure gauge for reducing interference from environmental factors according to claim 2, characterized in that: A spacing tube is installed between the upper diaphragm and the lower diaphragm, a spacing push rod is symmetrically slidably installed in the spacing tube, a return spring is installed on the spacing push rod, the spacing tube is connected to a spacing air pipe, and the end of the spacing air pipe is connected to the air pressure regulating pipe on the left.

6. A wellhead pressure gauge for reducing interference from environmental factors according to claim 1, characterized in that: The inner wall of the connector is provided with a sliding side groove, a sliding block is slidably mounted in the sliding side groove, a sliding spring is mounted on the sliding block, the upper diaphragm is fixedly mounted on the sliding block, and the lower diaphragm is slidably mounted on the sliding block.

7. A wellhead pressure gauge for reducing interference from environmental factors according to claim 6, characterized in that: An adjustment slide groove is arranged on the inner wall of the sliding block, an adjustment slider is slidably installed in the adjustment slide groove, the lower diaphragm is installed on the adjustment slider, and a support spring is installed on the adjustment slider.

8. A wellhead pressure gauge for reducing interference from environmental factors according to claim 1, characterized in that: An inner wall slide groove is provided on the inner wall of the functional semi-ring, the spring airbag is slidably mounted on the inner wall slide groove, and a sealing telescopic strip is mounted on the spring airbag.

9. A wellhead pressure gauge for reducing interference from environmental factors according to claim 1, characterized in that: The outer wall of the connector is provided with threads.

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