Electro-hydraulic series combined type drilling machine hanging load measuring sensor

Abstract

The utility model relates to an electro-hydraulic series combined type drilling machine hanging load measuring sensor, which comprises a hydraulic sensor and an electric sensor, and is characterized in that the hydraulic sensor and the electric sensor are mounted at a dead line anchor end after being connected in series and superposed according to a central axis, and load pressure at the dead line anchor end is transmitted along the central axis; the pressure sensing block of the electric sensor interacts with the rubber diaphragm of the liquid sensor, signals of the electric sensor are output or displayed through the power supply and the signal wiring unit, the rubber diaphragm of the liquid sensor pushes the pressure medium, and the pressure medium is output through the pressure output connector or the reserved pressure output connector. And the indicating unit is used for transmitting the pressure to an external pressure transmitter or a mechanical weight indicator. The weighing sensor and the pressure transmitting bag can output signals at the same time, the two kinds of output signals are backup for each other, even under the conditions that the pressure transmitting bag or a pipeline leaks oil, the weighing sensor can depend on output of the weighing sensor or be rapidly switched to an output mode of the weighing sensor, and it is guaranteed that work can be continued and not interrupted.

Description

Technical Field

[0001] The utility model relates to an electro-hydraulic series combined drilling rig suspended weight measuring sensor. Background Art

[0002] The hanging weight and drilling pressure are important parameters of drilling rigs. The traditional drilling rig hanging weight measurement sensor is a liquid sensor. The diaphragm pressure transmission bag of the liquid sensor is fixed at the end of the dead rope holder. The pressure is transmitted by the hydraulic pipeline and then converted into hanging weight, and then the drilling pressure is calculated by the hanging weight. During the drilling process, the pressure transmission bag of the liquid sensor may occasionally leak or leak, resulting in distortion of the hanging weight drilling pressure. The driller cannot judge the working conditions. At this time, a new pressure transmission bag must be replaced, which requires interrupting the working conditions and pulling out the drill to replace it, which is labor-intensive and time-consuming. Summary of the invention

[0003] In order to overcome the situation that the pressure transmission bag of the liquid sensor leaks or leaks, resulting in the distortion of the suspended weight drilling pressure, the utility model provides an electro-hydraulic series combined drilling rig suspended weight measurement sensor. The weighing sensor and the pressure transmission bag of the utility model can output signals at the same time, and the two output signals back up each other. Even in the case of oil leakage in the pressure transmission bag or pipeline, the output of the weighing sensor can be relied on or quickly switched to the output mode of the weighing sensor to ensure continuous and uninterrupted work.

[0004] The technical solution adopted by the utility model is:

[0005] An electro-hydraulic series combined drilling rig suspended weight measurement sensor comprises a liquid sensor and an electric sensor, and is characterized in that: the liquid sensor and the electric sensor are installed at the end of a dead rope fixer after being superimposed in series along the central axis, and the load pressure at the end of the dead rope fixer is transmitted along the central axis, the pressure sensing block of the electric sensor interacts with the rubber diaphragm of the liquid sensor, the signal of the electric sensor is output or displayed through a power supply and signal wiring unit, the rubber diaphragm of the liquid sensor pushes the pressure medium, and the pressure is transmitted to an external pressure transmitter or an indicating unit of a mechanical weight indicator through a pressure output connector or a reserved pressure output connector.

[0006] The electric sensor is a split arc surface weighing sensor. The structure can overcome the situation where the parallelism error of the pressure surface caused by the opening and closing of the jaws leads to excessive error in the measured load. In addition, the split arc surface weighing sensor has high accuracy and is less affected by temperature. If higher accuracy is required, temperature compensation can be performed.

[0007] The utility model also includes a temperature sensor, which is embedded in the housing of the split arc surface weighing sensor. The real-time temperature of the split arc surface weighing sensor can be measured, and the split arc surface weighing sensor can be temperature compensated to improve the output accuracy of the split arc surface weighing sensor, and the pressure output of the pressure transmission bag can be temperature compensated to compensate for the load error.

[0008] During actual use of the utility model, the electric sensor and liquid sensor signals can be output simultaneously, or only the liquid circuit signal can be output. In this case, the electric sensor signal output is used as a backup. When the liquid circuit signal fails, it can be quickly switched to the electric signal output, and the suspended weight drilling pressure can be read from the electronic screen to ensure that the work can be sustained without interruption. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural schematic diagram of the utility model.

[0010] Figure 2 It is a left view of the utility model.

[0011] In the figure: 1-liquid sensor, 1-1 bolt, 1-2 pressure chamber, 1-3 pressure transmission medium, 1-4 rubber diaphragm, 1-5 clamping ring, 1-6 oil filling joint, 1-7 pressure output joint, 1-8 reserved pressure output joint; 2-electric sensor, 2-1 pressure sensing block, 2-2 power supply and signal wiring unit, 2-3 temperature sensor, 2-4 housing. DETAILED DESCRIPTION

[0012] The present invention is described in detail below in conjunction with the accompanying drawings. The structures of the liquid sensor 1 and the electric sensor 2 are both existing structures and can be directly purchased.

[0013] like Figure 1-2 As shown, the utility model is an electro-hydraulic series combined drilling rig hanging weight measurement sensor, including a liquid sensor 1 and an electric sensor 2, characterized in that: after the liquid sensor 1 and the electric sensor 2 are superimposed in series along the central axis 3, according to the structure of the dead rope fixer, a pressure-type installation or a pull-type installation is selected at the dead rope fixer end, and the load pressure at the dead rope fixer end is transmitted along the central axis 3, the pressure-sensitive block 2-1 of the electric sensor 2 interacts with the rubber diaphragm 1-4 of the liquid sensor 1, the electric sensor 2 generates micro-strain, and the signal is output and displayed through the power supply and signal wiring unit 2-2, the rubber diaphragm 1-4 of the liquid sensor 1 pushes the pressure medium 1-3, and the pressure is transmitted to the external pressure transmitter or the indicating unit of the mechanical weight indicator through the pressure output connector 1-7 or the reserved pressure output connector.

[0014] The electric sensor 2 is a split arc surface weighing sensor, and its structure can overcome the situation where the parallelism error of the pressure surface caused by the opening and closing of the jaws leads to excessive error in the measured load.

[0015] A temperature sensor 2-3 is embedded in the shell of the split arc surface weighing sensor, which can measure the real-time temperature of the split arc surface weighing sensor, and can perform temperature compensation on the split arc surface weighing sensor, thereby improving the output accuracy of the split arc surface weighing sensor, and can also perform temperature compensation on the pressure output of the pressure transmission bag of the liquid sensor 1. The temperature point at the time of calibration is used as the reference temperature, and the measured temperature is compared with the reference temperature to calculate the difference ΔT. The influence value of each degree change of the scale on the output result is the experimental data, and ΔT is multiplied by the value to obtain the output temperature compensation value.

[0016] The utility model of the electro-hydraulic series combined drilling rig suspended weight measurement sensor has a simple and reliable structure, is easy to install, and is suitable for all types of pressure transmission packages. It only needs to make a split arc surface weighing sensor of the same size according to the size of the pressure transmission package. This combined drilling rig suspended weight measurement sensor combines the traditional diaphragm pressure transmission package and the split arc surface weighing sensor. According to the actual needs on site, it can be made into a compression type or a pulling type. In addition, a temperature sensor is implanted in the weighing sensor, which can measure the real-time temperature of the sensor, and can perform temperature compensation on the weighing sensor, thereby improving the output accuracy of the weighing sensor, and can also perform temperature compensation on the pressure output of the pressure transmission package.

Claims

1. An electro-hydraulic series combined drilling rig hanging weight measurement sensor, comprising a liquid sensor and an electric sensor, characterized in that: The liquid sensor and the electric sensor are installed at the dead rope fixer end after being stacked in series along the central axis, and the load pressure at the dead rope fixer end is transmitted along the central axis. The pressure sensing block of the electric sensor interacts with the rubber diaphragm of the liquid sensor. The signal of the electric sensor is output or displayed through the power supply and signal wiring unit. The rubber diaphragm of the liquid sensor pushes the pressure medium and transmits the pressure to an external pressure transmitter or an indicating unit of a mechanical weight indicator through a pressure output connector or a reserved pressure output connector.

2. According to claim 1, the electro-hydraulic series combined drilling rig suspended weight measurement sensor is characterized in that: The electric sensor is a split-type arc-surface weighing sensor.

3. According to claim 2, the electro-hydraulic series combined drilling rig suspended weight measurement sensor is characterized in that: It also includes a temperature sensor, which is implanted in the shell of the split-type curved surface weighing sensor.

Images