Pipeline sand content detector and sand content detection system

Abstract

The utility model discloses a pipeline sand content and sand content detection system, which is characterized in that a detector comprises a pipe holding seat, and a detection assembly is arranged on the pipe holding seat; the detection assembly comprises a sealed electronic cabin, a detection probe and a circuit board assembly are arranged in the electronic cabin, the sensing end of the detection probe is tightly attached to the inner wall of the electronic cabin, the output end of the detection probe is connected with the circuit board assembly, a pipeline attaching face is arranged on the outer wall of the electronic cabin, and the sensing end of the detection probe is close to and faces the pipeline attaching face in the electronic cabin. The system comprises a pipeline body, and a detector is arranged on the pipeline body. The electronic cabin has the remarkable effects that the detection probe of the sand-containing instrument is arranged in the electronic cabin, and the sensing end of the detection probe is tightly attached to the inner wall of the detection part of the electronic cabin, so that the condition that the tight attaching contact relationship between a plurality of components and a pipeline needs to be controlled simultaneously when the sand-containing instrument is mounted is avoided; and finally, only the outer wall of the detection part of the electronic cabin needs to be tightly attached to the fluid pipeline, so that the size control difficulty and the installation difficulty are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of petroleum engineering, concretely relates to a detection equipment in the process of underwater oil exploitation. BACKGROUND

[0002] In the process of oil and gas exploitation, solid particles often enter the pipeline along with oil and gas fluid; these solid particles are easy to cause abrasion or blockage of equipment such as pipeline, pump body and valve, which is not conducive to oil and gas exploitation, transportation and processing. Detecting solid particles in oil and gas and obtaining oil and gas sand content information are important prerequisites for analyzing problems and formulating schemes.

[0003] Traditional methods for measuring oil and gas sand content include volume method and mass method. These traditional methods need to separate solid particles and cannot measure real-time data.

[0004] Later, researchers proposed an oil and gas sand content instrument based on radioactive source measurement. The instrument uses rays of different energy levels to pass through the pipeline and obtains sand content by combining energy level attenuation formula. This device has problems such as high equipment cost, strict radioactive source management, high potential hazard of radioactive source and low acceptance of oil and gas business.

[0005] Researchers have proposed a method for calculating sand content by detecting the signal of solid particles impacting the pipe wall in oil and gas fluid. The corresponding pipe wall signal detection structure includes a detection probe and an open shell for placing the detection probe. When it is installed on the fluid pipeline, the sensing end of the detection probe and the shell need to be tightly attached to the outer wall of the arc-shaped pipeline at the same time, which has great difficulty in size control and installation process. INVENTION CONTENTS

[0006] The utility model provides a detection instrument which can reduce the difficulty of size control and installation, and the main technical scheme is as follows:

[0007] A pipeline sand detection instrument, the key is that: it comprises a pipe holding seat, a detection assembly is arranged on the pipe holding seat; the detection assembly comprises an electronic cabin arranged in a sealed manner, a detection probe and a circuit board assembly are arranged in the electronic cabin, the sensing end of the detection probe is tightly attached to the inner wall of the electronic cabin, the output end of the detection probe is connected with the circuit board assembly, and the circuit board assembly outputs detection signals through wired or wireless output;

[0008] The outer wall of the electronic cabin is provided with a pipeline abutting surface, and the sensing end of the detection probe is close to and faces the pipeline abutting surface in the electronic cabin.

[0009] The pipe holding seat is used for connecting with the oil and gas pipeline, the detection assembly is used for detecting the signal of solid particles impacting the inner wall of the pipeline, and the sand content can be obtained by combining necessary algorithms.

[0010] Because the detection probe is installed inside the electronic compartment, when connecting the sand detector to the fluid pipeline, it is only necessary to control the pipe contact surface on the outer wall of the electronic compartment to fit against the outer wall of the fluid pipeline; it is not necessary to control both the detection probe and the electronic compartment simultaneously. This reduces the difficulty of dimensional control and installation. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0012] Figure 2 This is a first cross-sectional view of the present invention;

[0013] Figure 3 This is a second cross-sectional view of the present invention;

[0014] Figure 4 for Figure 3 Enlarged view of part i;

[0015] Figure 5 This is a schematic diagram showing the fit between the tube holder 100 and the bottom cover 212. Detailed Implementation

[0016] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0017] Example 1:

[0018] like Figure 1 As shown, a pipe sand content detector includes a pipe holder 100, on which a detection component 200 is provided; the pipe holder 100 and the detection component 200 are preferably connected by a detachable assembly 300, and the pipe holder 100 is used to connect to the pipe body A.

[0019] Figure 2 and Figure 3 All are cross-sectional views of a pipeline sand content detector. Figure 2 This is obtained by a vertical plane section view along the axis A of the pipe body. Figure 3 This is obtained by a vertical plane section along the radial direction of the pipe body A.

[0020] Combination Figure 2 , Figure 3 , Figure 4 and Figure 5 It can be seen that the pipe clamp 100 includes a lower clamp 101 and an upper clamp 102; the lower clamp 101 and the upper clamp 102 are connected by bolts or other connecting parts.

[0021] The detection assembly 200 includes a sealed electronic compartment 210, which includes a chamber and a shell constituting the chamber. A detection probe 220 and a circuit board assembly 230 are arranged inside the electronic compartment 210. The sensing end of the detection probe 220 is in close contact with the inner wall of the electronic compartment 210, and the output end of the detection probe 220 is connected to the circuit board assembly 230. The circuit board assembly 230 outputs the detection signal via wired or wireless means.

[0022] When the sand-collecting instrument is used in an underwater environment, the circuit board assembly 230 preferably outputs the detection signal wirelessly via a wired connection. In this case, a signal transmission cable 240 is also provided outside the electronics compartment 210. The input end of the signal transmission cable 240 passes through the wall of the electronics compartment 210 and is wiredly connected to the signal output end of the circuit board assembly 230. The input end of the signal transmission cable 240 is sealed to the wall of the electronics compartment 210.

[0023] In order to detect the signal of solid particles impacting the inner wall of the pipe, a pipe contact surface is provided on the outer wall of the electronic compartment 210, and the sensing end of the detection probe 220 is located inside the electronic compartment 210 close to and facing the pipe contact surface.

[0024] To facilitate assembly and improve sealing performance, the electronic compartment 210 includes a compartment cylinder 211 and a bottom cover 212. The compartment cylinder 211 is provided with a sealing opening. The detection probe 220 and the circuit board assembly 230 are fixed on the bottom cover 212. The detection probe 220 and the circuit board assembly 230 are inserted into the electronic compartment 210 through the sealing opening. The bottom cover 212 closes the sealing opening and is sealed to the compartment cylinder 211.

[0025] The inner surface of the bottom cover 212 is provided with a probe blind hole 212a, which is located inside the protrusion 213. At least a portion of the detection probe 220 is located inside the probe blind hole 212a, and the sensing end of the detection probe 220 is in close contact with the bottom of the probe blind hole 212a. A preferred technical solution is that the detection probe 220 is a piezoelectric sensor, located inside the probe blind hole 212a. A sensor clamping seat 214 is also fixed to the inner surface of the bottom cover 212. A portion of the sensor clamping seat 214 extends into the probe blind hole 212a and is in close contact with the piezoelectric sensor. The sensing surface of the piezoelectric sensor is in close contact with the bottom of the probe blind hole 212a. The output end of the piezoelectric sensor is connected to the input end of the circuit board assembly 230 via a lead wire. The circuit board assembly 230 includes a PCB bracket, which is fixed to the inner surface of the bottom cover 212. A PCB board is mounted on the PCB bracket, and components are mounted on the PCB board.

[0026] The bottom cover 212 is provided with at least one outward protrusion 213, and the outer surface of the outward protrusion 213 is provided with the pipe contact surface.

[0027] The detachable assembly 300 can be a bolt or a snap fastener; the preferred structure of the detachable assembly 300 is as follows: the detachable assembly 300 includes a constraint cylinder 301, one end of which is connected to the lower clamp 101 or upper clamp 102 of the pipe clamping seat 100. The pipe clamping seat 100 has a contact opening corresponding to the connection end of the constraint cylinder 301. The detection part of the detection component 200 extends into the contact opening. The constraint cylinder 301 has an axial guide hole and a circumferential guide hole. Both the axial guide hole and the circumferential guide hole are strip-shaped holes. The axial guide hole is arranged along the axial direction of the constraint cylinder 301, and the circumferential guide hole is arranged along the circumferential direction of the constraint cylinder 301.

[0028] The constraint cylinder 301 is provided with an axial guide hole and a circumferential guide hole. The axial guide hole is located at one end of the constraint cylinder 301 away from the tube holder 100 (hereinafter referred to as the far end of the constraint cylinder 301). The far end of the axial guide hole opens at the far edge of the constraint cylinder 301. One end of the circumferential guide hole communicates with the proximal end of the axial guide hole, and the other end of the circumferential guide hole extends circumferentially.

[0029] A locking pin 302 is fixedly provided on the outer wall of the chamber 211. The locking pin 302 is configured corresponding to the axial guide hole and the circumferential guide hole. The locking pin 302 enters from the far end of the axial guide hole and moves to the closed end of the circumferential guide hole, thereby realizing the detachable connection between the chamber 211 and the constraint cylinder 301.

[0030] Example 2:

[0031] A pipeline sand content detection system, combined with Figure 1 , 2 As can be seen from 3 and 4, it includes a pipe body A, on which the pipe sand content detector of Embodiment 1 is provided, wherein the pipe clamp 100 is connected to the pipe body A, and the pipe contact surface of the pipe sand content detector is in contact with the outer wall of the pipe body A.

[0032] As a preferred technical solution, the pipe contact surface is a plane, and the outer wall of the pipe body A is provided with a detection contact plane A1 corresponding to the pipe contact surface, and the pipe contact surface and the detection contact plane A1 are in contact with each other.

[0033] The sand content meter and detection system in this solution can acquire signals of solid particles in the oil and gas flow impacting the inner wall of the pipeline, providing basic data for the calculation of sand content. The calculation formula and method of sand content are existing technologies and are recorded in other published technical documents or patent documents, so they will not be elaborated here.

[0034] Beneficial effects: By adopting the technical solution of this utility model, the detection probe of the sand-containing instrument is built into the electronic chamber, so that the sensing end of the detection probe is in close contact with the inner wall of the detection part of the electronic chamber. This avoids the need to control the close contact between multiple components and the pipeline at the same time when installing the sand-containing instrument. Finally, it is only necessary to press the outer wall of the detection part of the electronic chamber against the fluid pipeline to sense the signal of solid particles inside the fluid pipeline hitting the inner wall of the pipeline, which reduces the difficulty of size control and installation.

[0035] Finally, it should be noted that the above description is merely a preferred embodiment of the present utility model. Those skilled in the art, under the guidance of the present utility model, can make various similar representations without departing from the spirit and claims of the present utility model, and such modifications all fall within the protection scope of the present utility model.

Claims

1. A pipeline sand content detector, characterized in that: Includes a tube holder (100) on which a detection component (200) is provided; The detection assembly (200) includes a sealed electronic compartment (210), inside which a detection probe (220) and a circuit board assembly (230) are arranged. The sensing end of the detection probe (220) is in close contact with the inner wall of the electronic compartment (210), and the output end of the detection probe (220) is connected to the circuit board assembly (230). The circuit board assembly (230) outputs the detection signal via wired or wireless means. The outer wall of the electronic compartment (210) is provided with a pipe contact surface, and the sensing end of the detection probe (220) is close to and facing the pipe contact surface inside the electronic compartment (210).

2. The pipeline sand content detector according to claim 1, characterized in that: The electronic compartment (210) is also provided with a signal transmission cable (240), the input end of which passes through the wall of the electronic compartment (210) and is wired to the signal output end of the circuit board assembly (230).

3. The pipeline sand content detector according to claim 1, characterized in that: The electronic compartment (210) includes a compartment cylinder (211) and a bottom cover (212). The compartment cylinder (211) is provided with a sealing opening. The detection probe (220) and the circuit board assembly (230) are fixed on the bottom cover (212). The detection probe (220) and the circuit board assembly (230) are placed inside the electronic compartment (210) through the sealing opening. The bottom cover (212) closes the sealing opening and is sealed to the compartment cylinder (211).

4. The pipeline sand content detector according to claim 3, characterized in that: The bottom cover (212) is provided with at least one outward protrusion (213), and the outer surface of the outward protrusion (213) is provided with the pipe contact surface.

5. The pipeline sand content detector according to claim 4, characterized in that: The inner surface of the bottom cover (212) is provided with a probe blind hole (212a), which is located inside the protrusion (213). At least a part of the detection probe (220) is located inside the probe blind hole (212a), and the sensing end of the detection probe (220) is in close contact with the bottom of the probe blind hole (212a).

6. The pipeline sand content detector according to claim 5, characterized in that: The detection probe (220) is a piezoelectric sensor, which is located inside the probe blind hole (212a). The inner surface of the bottom cover (212) is also fixed with a sensor clamping seat (214), a part of which extends into the probe blind hole (212a) and is in close contact with the piezoelectric sensor.

7. The pipeline sand content detector according to any one of claims 1-6, characterized in that: The pipe clamp (100) includes a lower clamp (101) and an upper clamp (102); the lower clamp (101) and the upper clamp (102) are connected by a connector.

8. The pipeline sand content detector according to any one of claims 1-6, characterized in that: The tube holder (100) and the detection component (200) are connected by a detachable assembly (300).

9. A pipeline sand content detection system, comprising a pipeline body (A), characterized in that: The pipeline body (A) is provided with a pipeline sand content detector as described in any one of claims 1-8, the pipe clamp (100) is connected to the pipeline body (A), and the pipeline contact surface of the pipeline sand content detector is in contact with the outer wall of the pipeline body (A).

10. A pipeline sand content detection system according to claim 9, characterized in that: The pipe contact surface is a plane, and the outer wall of the pipe body (A) is provided with a detection contact plane (A1) corresponding to the pipe contact surface. The pipe contact surface and the detection contact plane (A1) are in contact with each other.

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