Pressure gauge and temperature and pressure gauge with sand prevention function

Abstract

The utility model discloses a pressure gauge and a thermomanometer with a sand prevention function, which comprise a gauge body, the gauge body is provided with a pipeline plug, the free end of the pipeline plug is provided with a pressure sensor, and the pressure sensing end of the pressure sensor is arranged on the end face of the free end of the pipeline plug. The free end of the pipeline plug is further provided with an anti-impact mesh, a gap is reserved between the anti-impact mesh and the end face of the free end of the pipeline plug, and the edge of the anti-impact mesh is fixedly connected with the free end of the pipeline plug. The pressure sensor has the remarkable effects that the anti-impact mesh arranged outside the pressure sensing end of the pressure sensor can block and isolate rock debris and gravel with certain sizes, so that the rock debris and gravel with larger volume (mass) are prevented from directly impacting the pressure sensing end of the pressure sensor, and the blocking and isolating effects have the effect of reducing pressure numerical value fluctuation. And the obvious effect of delaying or avoiding the damage of the pressure sensor is achieved.

Description

Technical Field

[0001] This utility model relates to the field of petroleum engineering, specifically to a data measuring instrument suitable for petroleum engineering. Background Technology

[0002] Oil and gas resources recovered in petroleum engineering need to be transported through pipelines. Installing temperature and pressure gauges (hereinafter referred to as "temperature and pressure gauges") on these pipelines to monitor the temperature and pressure parameters of the oil and gas is a crucial measure for oil and gas recovery monitoring, decision-making, and statistical analysis. Temperature and pressure gauges can be integrated into a single unit, or they can be separate units (independent temperature and pressure gauges). The main structure of a temperature and pressure gauge includes a plug that passes through the wall of the oil and gas transport pipe from the outside in and connects to the inner cavity of the pipe. The plug is equipped with sensors (pressure sensor and / or temperature sensor). In existing technology, the sensing end (sensing element) of the pressure sensor needs to be connected to the inner cavity of the oil and gas transport pipe so that it can directly contact the oil and gas to obtain pressure data; while the temperature sensor generally does not need to be connected to the inner cavity of the oil and gas transport pipe, as the temperature of the oil and gas is transmitted to the temperature sensor through a heat-conducting plug.

[0003] During oil and gas extraction, solid materials such as rock cuttings and gravel inevitably flow along with the oil and gas. As these materials travel through pipelines, they impact the sensing elements of pressure sensors connected to the pipeline's interior. On one hand, the impact of rock cuttings and gravel on the sensing elements causes fluctuations in pressure readings, leading to inaccurate pressure detection. On the other hand, prolonged impacts from large amounts of rock cuttings and gravel on the sensing elements can cause loosening, misalignment, or even damage to critical connections within the pressure sensor. Both of these adverse effects are more pronounced when the mass (volume) of rock cuttings and gravel is large. Utility Model Content

[0004] This utility model provides a pressure detection device capable of blocking and isolating relatively large rock fragments and sand in oil and gas. The main technical solution adopted is as follows:

[0005] A pressure gauge with sand-proof function includes a gauge body, the gauge body being equipped with a pipe plug, and a pressure sensor being equipped at the free end of the pipe plug. The pressure sensing end of the pressure sensor is located on the end face of the free end of the pipe plug. The key feature is that an anti-impact mesh is also provided at the free end of the pipe plug, and a gap is left between the anti-impact mesh and the end face of the free end of the pipe plug. The edge of the anti-impact mesh is fixedly connected to the free end of the pipe plug.

[0006] The impact-resistant mesh is used to block and isolate rock fragments and gravel of a certain size, as specified by the manufacturer, thereby preventing large-volume (mass) rock fragments and gravel from directly impacting the pressure sensing end of the pressure sensor. Although it cannot prevent the impact caused by small rock fragments and gravel, this blocking and isolation effect is still very effective in reducing pressure value fluctuations and delaying or preventing damage to the pressure sensor.

[0007] The gap between the shock-resistant mesh and the pipe plug ensures that the pressure sensing end of the pressure sensor is in contact with the oil or gas medium being measured. Attached Figure Description

[0008] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0009] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0010] Figure 3 This is a schematic cross-sectional view of the pipe plug 1 from a first-person perspective.

[0011] Figure 4 This is a cross-sectional view of the pipe plug 1 from a second perspective. Detailed Implementation

[0012] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0013] Example 1:

[0014] like Figures 1-4 As shown, a pressure gauge with sand prevention function includes a gauge body, which is equipped with a pipe plug 1. The pipe plug 1 can be formed by axially connecting multiple cylinders. One end of the pipe plug 1 is fixedly connected to other parts of the gauge body, and the other end of the pipe plug 1 extends outward so that it can be inserted into a corresponding insertion hole on the wall of an oil or gas pipeline. This structure and installation relationship are existing technologies and will not be described in detail here.

[0015] One end extending outward from the pipe plug 1 is its free end. A pressure sensor 2 is disposed at the free end of the pipe plug 1, and the pressure sensing end of the pressure sensor 2 is located on the free end face of the pipe plug 1. Specifically, a structure for connecting the pressure sensor 2 and the pipe plug 1 is as follows: one or more pressure element sockets are provided on the free end face of the pipe plug 1, and the pressure element sockets correspond to the pressure sensor 2 in number and installation position. The pressure element sockets are countersunk holes, and the pressure sensor 2 is inserted into the pressure element sockets with its sensing end facing outward from the pressure element socket. To extract the pressure signal detected by the pressure sensor 2, a lead wire channel is provided inside the pipe plug 1. This lead wire channel has a first inlet communicating with the pressure element socket. The first inlet of the lead wire channel communicates with the bottom of the pressure element socket, and the diameter of the pressure element socket is larger than the diameter of the first inlet. A pressure signal output line is connected to the output end of the pressure sensor 2, and this pressure signal output line extends into the lead wire channel.

[0016] To maintain a water seal between the pressure sensor 2 and the pressure element socket, an annular sealing groove is provided on the pressure sensor 2, and a sealing ring that fits tightly against the inner wall of the pressure element socket is fitted inside the annular sealing groove. The pressure sensor 2 includes a pressure sensing element for detecting pressure signals and a fixed housing for enclosing, supporting, and fixing the pressure sensing element, and the annular sealing groove is provided on the fixed housing.

[0017] Since the volume of rock fragments and gravel is proportional to their mass, protecting against the impact of larger mass rock fragments and gravel is equivalent to protecting against the impact of larger volume rock fragments and gravel. Generally, manufacturers specify the minimum particle size of the rock fragments and gravel that need protection. Therefore, an impact-resistant mesh 3 with a corresponding aperture can be configured at the free end of the pipe plug 1. To ensure that the sensing end of the pressure sensor 2 can contact the measured oil and gas medium, a gap is left between the impact-resistant mesh 3 and the free end face of the pipe plug 1 to allow for oil and gas flow. The edge of the impact-resistant mesh 3 is fixedly connected to the free end of the pipe plug 1 to maintain stability.

[0018] A preferred method for fixing the impact-resistant mesh 3 to the pipe plug 1 is as follows: the free end face of the pipe plug 1 is provided with an outer abutment ring 11, which is located at the edge of the free end face of the pipe plug 1. Considering both simplified manufacturing process and structural stability, the outer abutment ring 11 and the pipe plug 1 are preferably integrally formed. The impact-resistant mesh 3 is located inside the outer abutment ring 11, and the edge of the impact-resistant mesh 3 is fixedly connected to the outer abutment ring 11. When the pressure gauge is assembled into the corresponding mounting hole on the oil and gas pipeline, the pipe plug 1 is always in contact with the inner wall of the mounting hole. During manufacturing and assembly, only the assembly / assembly accuracy of the pipe plug 1 and the mounting hole needs to be considered, without needing to consider the assembly / assembly accuracy of the impact-resistant mesh 3 and the mounting hole, thereby relatively reducing the manufacturing and assembly difficulty.

[0019] A more preferred method for fixing the impact-resistant mesh 3 to the pipe plug 1 is as follows: the edge of the impact-resistant mesh 3 is folded towards the free end face of the pipe plug 1 to form an inner abutment ring 31, thereby improving the strength of the impact-resistant mesh 3; the free end face of the inner abutment ring 31 abuts against the free end face of the pipe plug 1 to improve the impact resistance of the impact-resistant mesh 3; the outer circumferential surface of the inner abutment ring 31 abuts against the inner and outer circumferential surfaces of the outer abutment ring 11, and the two are preferably interference-fitted to strengthen the fit and prevent the inner abutment ring 31 from coming off; furthermore, the inner abutment ring 31 and the outer abutment ring 11 are welded together to solidify their connection.

[0020] The free end face of the outer abutment ring 11 is flush with the outer surface of the anti-impact mesh 3, thereby ensuring that after the pressure gauge is installed in the corresponding mounting hole on the oil and gas pipeline, it can remain flush with the inner wall of the pipeline. Correspondingly, the shape of the anti-impact mesh 3 can also be adapted to the shape of the inner wall of the pipeline.

[0021] Both the pipe plug 1 and the impact-resistant mesh 3 are made of corrosion-resistant metal materials. There are many choices of specific materials in the prior art, which will not be elaborated here.

[0022] Figure 3 The first-person perspective shown and Figure 4 The second perspective shown is not a specific perspective, but rather a cross-sectional view from two relatively different perspectives.

[0023] The instrument body includes a docking flange 5, on one side of which is the pipe plug 1, and on the other side of which is an electronic chamber assembly 6. The pressure signal output line passes through the docking flange 5 and enters the interior of the electronic chamber assembly 6. The electronic chamber assembly 6 is equipped with an output cable that transmits the output signal of the electronic chamber assembly 6 externally.

[0024] Example 2:

[0025] A type of temperature and pressure gauge, such as Figures 1-4 As shown, the device includes a meter body, which comprises a pipe plug 1, a mating flange 5, and an electronic compartment assembly 6.

[0026] The pipe plug 1 and the electronic compartment assembly 6 are located on both sides of the docking flange 5. One end of the pipe plug 1 is fixedly connected to the docking flange 5, and the other end extends outward to form a free end. The free end of the pipe plug 1 is equipped with a pressure sensor 2 and a temperature sensor 4. The pressure sensing end of the pressure sensor 2 is located on the free end face of the pipe plug 1, and the temperature sensor 4 is located inside the pipe plug 1. The sensing end of the temperature sensor 4 is close to the free end face of the pipe plug 1.

[0027] Specifically, a structure connecting a pressure sensor 2 and a pipe plug 1 is as follows: One or more pressure element sockets are provided on the free end face of the pipe plug 1. The pressure element sockets correspond to the pressure sensor 2 in number and installation position. Each pressure element socket is a countersunk hole. The pressure sensor 2 is inserted into the pressure element socket, with its sensing end facing outwards. To extract the pressure signal detected by the pressure sensor 2, a lead-in channel is provided inside the pipe plug 1. This lead-in channel has a first inlet communicating with the pressure element socket. The first inlet of the lead-in channel communicates with the bottom of the pressure element socket. The diameter of the pressure element socket is larger than the diameter of the first inlet. A pressure signal output line is connected to the output end of the pressure sensor 2, extending into the lead-in channel. To maintain a water seal between the pressure sensor 2 and the pressure element socket, an annular sealing groove is provided on the pressure sensor 2. A sealing ring, which fits tightly against the inner wall of the pressure element socket, is fitted inside the annular sealing groove. The pressure sensor 2 includes a pressure sensing element for detecting pressure signals and a fixed housing for enclosing, supporting and fixing the pressure sensing element, with the annular sealing groove disposed on the fixed housing.

[0028] The pipe plug 1 is equipped with one or more temperature element sockets. The temperature element sockets and temperature sensors 4 also have a corresponding relationship in terms of quantity and installation position. The temperature sensors 4 are inserted into the corresponding temperature element sockets. The lead wire channel has a second inlet that communicates with the temperature element sockets. The diameter of the second inlet is larger than the diameter of the temperature element sockets. The output end of the temperature sensor 4 is connected to a temperature signal output line, which also extends into the lead wire channel.

[0029] To facilitate the installation of temperature sensor 4, the pipe plug 1 can be configured as a segmented type.

[0030] An anti-impact mesh 3 with a corresponding aperture is provided at the free end of the pipe plug 1. A gap is left between the anti-impact mesh 3 and the free end face of the pipe plug 1 to allow oil and gas to flow. The edge of the anti-impact mesh 3 is fixedly connected to the free end of the pipe plug 1 to maintain stability.

[0031] The free end face of the pipe plug 1 is provided with an outer abutment ring 11, which is located at the edge of the free end face of the pipe plug 1. The impact-resistant mesh 3 is located inside the outer abutment ring 11, and the edge of the impact-resistant mesh 3 is fixedly connected to the outer abutment ring 11. The edge of the impact-resistant mesh 3 is folded towards the free end face of the pipe plug 1 to form an inner abutment ring 31. The free end face of the inner abutment ring 31 abuts against the free end face of the pipe plug 1, and the outer circumferential surface of the inner abutment ring 31 abuts against the inner and outer circumferential surfaces of the outer abutment ring 11. The two are preferably interference-fitted to strengthen the fit and prevent the inner abutment ring 31 from coming off. The inner abutment ring 31 and the outer abutment ring 11 are welded and fixed to solidify their connection.

[0032] The free end face of the outer abutment ring 11 is flush with the outer surface of the anti-impact mesh 3, thereby ensuring that after the pressure gauge is installed in the corresponding mounting hole on the oil and gas pipeline, it can remain flush with the inner wall of the pipeline. Correspondingly, the shape of the anti-impact mesh 3 can also be adapted to the shape of the inner wall of the pipeline.

[0033] Both the pressure signal output line and the temperature signal output line pass through the docking flange 5 and enter the interior of the electronic compartment assembly 6.

[0034] A circuit board assembly is configured inside the electronic chamber assembly 6. The pressure signal output line and the temperature signal output line are both connected to the input end of the circuit board assembly. The electronic chamber assembly 6 is equipped with an output cable, and the output end of the circuit board assembly is connected to the output cable. The output cable transmits the output signal of the electronic chamber assembly 6 to the platform or control center.

[0035] Beneficial effects: The impact-resistant mesh installed on the pressure sensing end of the pressure sensor using the technical solution of this utility model can block and isolate rock fragments and gravel of a certain size, thereby preventing large-volume (mass) rock fragments and gravel from directly impacting the pressure sensing end of the pressure sensor. This blocking and isolation effect has a significant effect on reducing pressure value fluctuations and delaying or preventing damage to the pressure sensor.

[0036] 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 pressure gauge with sand-proof function, comprising a gauge body, wherein the gauge body is provided with a pipe plug (1), and a pressure sensor (2) is provided at the free end of the pipe plug (1), wherein the pressure sensing end of the pressure sensor (2) is disposed on the free end face of the pipe plug (1), characterized in that: An impact-resistant mesh (3) is also provided at the free end of the pipe plug (1). A gap is left between the impact-resistant mesh (3) and the free end face of the pipe plug (1). The edge of the impact-resistant mesh (3) is fixedly connected to the free end of the pipe plug (1).

2. The pressure gauge with sand-proof function according to claim 1, characterized in that: The free end face of the pipe plug (1) is provided with an outer abutment ring (11), which is located at the edge of the free end face of the pipe plug (1). The anti-impact mesh (3) is located inside the outer abutment ring (11), and the edge of the anti-impact mesh (3) is fixedly connected to the outer abutment ring (11).

3. The pressure gauge with sand-proof function according to claim 2, characterized in that: The edge of the impact-resistant mesh (3) is folded towards the free end face of the pipe plug (1) to form an inner abutment ring (31). The free end face of the inner abutment ring (31) abuts against the free end face of the pipe plug (1), and the outer circumferential surface of the inner abutment ring (31) abuts against the inner and outer circumferential surfaces of the outer abutment ring (11).

4. The pressure gauge with sand-proof function according to claim 3, characterized in that: The inner abutment ring (31) is welded and fixed to the outer abutment ring (11).

5. The pressure gauge with sand-proof function according to claim 2, 3 or 4, characterized in that: The free end face of the outer abutment ring (11) is flush with the outer surface of the anti-impact mesh (3).

6. The pressure gauge with sand-proof function according to claim 1, 2, 3 or 4, characterized in that: The free end face of the pipe plug (1) is provided with a pressure element insertion hole, which is a countersunk hole, and the pressure sensor (2) is inserted into the pressure element insertion hole. The pipe plug (1) is provided with a lead wire channel, which is connected to the pressure element socket. The output end of the pressure sensor (2) is connected to a pressure signal output line, which extends into the lead wire channel. The pressure sensor (2) is provided with an annular sealing groove, and a sealing ring that fits tightly against the inner wall of the pressure element socket is fitted inside the annular sealing groove.

7. The pressure gauge with sand-proof function according to claim 6, characterized in that: The table body includes a docking flange (5), one side of which is provided with the pipe plug (1), and the other side of which is provided with an electronic compartment assembly (6). The pressure signal output line passes through the docking flange (5) and enters the interior of the electronic compartment assembly (6).

8. The pressure gauge with sand-proof function according to claim 7, characterized in that: The electronic compartment assembly (6) is equipped with an output cable that transmits the output signal of the electronic compartment assembly (6) to the outside.

9. A temperature and pressure gauge, characterized in that: The pressure gauge with sand-proof function according to any one of claims 1-8 is further provided with a temperature sensor (4) inside the pipe plug (1), the sensing end of the temperature sensor (4) being close to the free end face of the pipe plug (1).

Images