CN208473851U - Pressure gauge suitable for the high temperature and pressure natural gas well - Google Patents
Pressure gauge suitable for the high temperature and pressure natural gas well Download PDFInfo
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- CN208473851U CN208473851U CN201820825963.9U CN201820825963U CN208473851U CN 208473851 U CN208473851 U CN 208473851U CN 201820825963 U CN201820825963 U CN 201820825963U CN 208473851 U CN208473851 U CN 208473851U
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- pressure gauge
- gas well
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Abstract
A kind of pressure gauge suitable for the high temperature and pressure natural gas well, including the pressure sensor being mounted in sensor holder, the control circuit board being fixed in circuit sleeve and the battery component in Battery shell, one end of sensor holder is connected with signal acquisition connector, the other end protrudes into one end of circuit sleeve and is threadedly coupled with it；One end that the other end of circuit sleeve protrudes into Battery shell is threadedly coupled with it；It is tightly connected by high temperature high voltage resistant seal assembly between sensor holder and circuit sleeve, between circuit sleeve and Battery shell, high temperature high voltage resistant seal assembly includes fluorubber radial seal retaining ring, fluororubber O-type radial direction seal ring and the metal end-face seal ring set gradually along axial direction.For the test environment of high temperature and pressure under the natural gas well, using the sealing of end plane metal end-face seal ring plus the combination sealing form of twice fluorubber radial spring seal, effectively the electrical chamber of pressure gauge and external environment can be sealed off, it is ensured that the normal use of pressure gauge.
Description
Technical field
The utility model relates to natural gas well logging equipment fields, are suitable for the high temperature and pressure natural gas well in particular to one kind
Pressure gauge
Background technique
In the well testing operation of the natural gas well, the variation in the recovery process of down-hole pressure to mine gas pressure is needed
It is monitored, and the time of entire pressure recovery process is very long, generally requires three months or so, in this very long pressure recovery
In the process will the pressure incessantly to underground continue to monitor, this just needs pressure gauge to be placed in for a long time underground, realize
The gas pressure of underground is monitored.Since pressure up to 100MPa, temperature contains two up to 175 DEG C in the natural gas well
The corrosive gas such as carbonoxide, hydrogen sulfide, the common seal form of pressure gauge is twice fluororubber O-type radial direction seal ring diameter at present
To sealing, hot environment will affect the sealing performance of fluororubber O circle, and gas molecule is smaller, can penetrate through fluororubber O-type diameter
To sealing ring, meanwhile, the corrosive gas such as hydrogen sulfide have certain corrosion to damage fluororubber O-type radial direction seal ring in subsurface environment
Evil, be easy to cause seal failure, and then corrosive gas enters pressure gauge internal chamber, is easy to cause pressure gauge internal control
The damage of the equipment such as circuit board, battery component seriously affects pressure monitoring in the normal use and well testing operation of pressure gauge
Data accuracy.
Summary of the invention
The purpose of this utility model seeks to overcome defect existing for existing natural gas well pressure gauge, and providing one kind can increase
Strong pressure meter sealing performance avoids corrosive gas from entering pressure gauge internal chamber, uses the longevity to effectively improve pressure gauge
Life ensures the pressure gauge suitable for the high temperature and pressure natural gas well that well testing operation is gone on smoothly.
To achieve the above object, it is suitable for the pressure gauge of the high temperature and pressure natural gas well designed by the utility model, including
The pressure sensor that is mounted in sensor holder is fixed in circuit sleeve for receiving and processing the control of pressure sensor signal
Circuit board and in Battery shell for circuit board provide power supply battery component, one end of the sensor holder is set
It is equipped with the interface being connected with signal acquisition connector, is characterized in that the other end of the sensor holder protrudes into circuit sleeve
One end be threadedly coupled with it；One end that the other end of the circuit sleeve protrudes into Battery shell is threadedly coupled with it；The biography
Resistance to height is provided between sensor seat and the connecting portion of circuit sleeve, between the circuit sleeve and the connecting portion of Battery shell
Warm high-pressure sealing component, the high temperature high voltage resistant seal assembly is by the fluorubber radial seal retaining ring, the fluorine that set gradually along axial direction
RUBBER O type radial direction seal ring and metal end-face seal ring are composed.
Preferably, one end outer wall that the sensor holder protrudes into circuit sleeve is provided with and the circuit socket end
First land of crown tight fit, the end face of first land are provided with the annular groove for setting metal end-face seal ring.
In this way, the high straightening in the natural gas well can be avoided in sensor holder end face seal together with the formation of the joint surface of circuit sleeve
It connects and acts on twice circumferential direction fluorubber radial seal retaining ring below and fluororubber O-type radial direction seal ring.
Preferably, one end outer wall that the circuit sleeve protrudes into Battery shell is provided with and the Battery shell end
Second land of crown tight fit, the end face of second land are provided with the annular groove for setting metal end-face seal ring.
In this way, the high straightening in the natural gas well can be avoided in the end face seal together with the formation of the joint surface of Battery shell of circuit sleeve
It connects and acts on twice circumferential direction fluorubber radial seal retaining ring below and fluororubber O-type radial direction seal ring.
Preferably, the connecting portion of the pressure sensor and sensor holder uses laser welded seal.In this way,
It can prevent to invade pressure gauge inner cavity by the connecting portion of pressure sensor and sensor holder in well testing operation high temperature gas.
Preferably, the metal end-face seal ring is metal hollow O-ring seal or metal c-type sealing ring, institute
The matrix for stating metal hollow O-ring seal or metal c-type sealing ring is stainless steel coil, and surface is provided with coating layer.In this way, can
To enhance the high-voltage performance resistant to high temperatures of metal end-face seal ring, extend the useful life of sealing.
Utility model has the advantages that the designed pressure gauge configuration suitable for the high temperature and pressure natural gas well simply makes
With convenient, practical, for the test environment of high temperature and pressure under the natural gas well, in Battery shell and circuit sleeve, circuit set
The connecting portion of cylinder and sensor holder has separately designed three seals: i.e. the sealing of metal end-face seal ring plus twice fluorubber are radial
The combination sealing form of elastic packing, and the sealing of laser welded seal is used in pressure sensor and sensor holder connecting portion
The electrical chamber of pressure gauge and external environment can be sealed off effectively, preferably resolve natural gas well high temperature by form
The sealing problem of high pressure corrosive gas, it is ensured that normal use of the pressure gauge in the natural gas well.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the pressure gauge that the utility model is suitable for the high temperature and pressure natural gas well.
Fig. 2 is the enlarged structure schematic diagram in Fig. 1 at m.
Fig. 3 is the partial enlargement structural representation for the pressure gauge that the utility model another kind is suitable for the high temperature and pressure natural gas well
Figure.
In figure: sensor holder 1；First land 1.1；Circuit sleeve 2；Second land 2.1；Battery shell 3；Pressure sensor
4；Metal end-face seal ring 5；Fluororubber O-type radial direction seal ring 6；Fluorubber radial seal retaining ring 7；Control circuit board 8；Battery pack
Part 9.
Specific embodiment
The utility model is described in further detail in the following with reference to the drawings and specific embodiments.
Embodiment 1:
It is suitable for the pressure gauge of the high temperature and pressure natural gas well shown in Fig. 1~2, including being mounted in sensor holder 1
Pressure sensor 4 is fixed on the control circuit board 8 in circuit sleeve 2 for receiving and processing pressure sensor signal and sets
For providing the battery component 9 of power supply to circuit board in Battery shell 3, one end of sensor holder 1 is provided with and signal acquisition
The connected interface of connector, one end that the other end of sensor holder 1 protrudes into circuit sleeve 2 is threadedly coupled with it；Circuit sleeve 2 it is another
One end that Battery shell 3 is protruded into one end is threadedly coupled with it；Between sensor holder 1 and the connecting portion of circuit sleeve 2, circuit set
It is provided with high temperature high voltage resistant seal assembly between cylinder 2 and the connecting portion of Battery shell 3, high temperature high voltage resistant seal assembly is by along axis
To set gradually fluorubber radial seal retaining ring 7, fluororubber O-type radial direction seal ring 6 and metal end-face seal ring 5 combination and
At.
The connecting portion of pressure sensor 4 and sensor holder 1 uses laser welded seal.Sensor holder 1 protrudes into circuit set
One end outer wall of cylinder 2 is provided with the first land 1.1 that cooperation is held out against with 2 end of circuit sleeve, the end face setting of the first land 1.1
There is the annular groove for setting metal end-face seal ring 5.One end outer wall that circuit sleeve 2 protrudes into Battery shell 3 is provided with and electricity
Sleeve 3 end in pond holds out against the second land 2.1 of cooperation, and the end face of the second land 2.1 is provided with for setting metal end face seal
The annular groove of circle 5.
In the present embodiment, metal end-face seal ring 5 uses metal hollow O-ring seal, the matrix of metal end-face seal ring 5
For stainless steel coil, and surface has coating layer (generally silver-colored), and due to 5 dense materials of metal end-face seal ring, gas molecule is not easy
It penetrates through, there is preferable tolerance to corrosive gas, stainless steel sealing ring has preferable wearability and plasticity, in two sides
Part not will cause sealing face damage, the leakproofness of metal end-face seal ring 5 during rotatably compressing metal end-face seal ring 5
Energy very little affected by the high temperature can be suitable for the sealing of natural gas well high temperature pressure corrosion gas.Metal end-face seal ring
The combination sealing form of sealing plus twice fluorubber radial spring seal forms the progressive sealing protection of multilayer, can effectively prolong
Delay and prevents environment gas permeation in the natural gas well from improving the pressure gauge underground work service life into the electrical chamber of pressure gauge.Pressure
Laser welded seal is used between sensor 4 and sensor holder 1, and there is good sealing effect, avoid and leak herein.
Embodiment 2:
Another kind designed by the utility model as shown in Figure 3 is suitable for the pressure gauge of the high temperature and pressure natural gas well, it
Overall structure it is substantially the same manner as Example 1, only in the present embodiment metal end-face seal ring 5 use metal c-type sealing ring.
Finally it is pointed out that above embodiments are only the more representational examples of the utility model.Obviously, this is practical new
Type is not limited to the above embodiments, and acceptable there are many deformations.All foundation the technical essence of the utility model are to above embodiments
Any simple modifications, equivalents, and modifications done are considered as belonging to the protection scope of the utility model.
Claims (5)
1. a kind of pressure gauge suitable for the high temperature and pressure natural gas well, including the pressure sensor being mounted in sensor holder (1)
(4), it is fixed on the control circuit board (8) for being used to receive and process pressure sensor signal in circuit sleeve (2) and embedded in electricity
For providing the battery component (9) of power supply to control circuit board in pond sleeve (3), one end of the sensor holder (1) is provided with
The interface being connected with signal acquisition connector, it is characterised in that: the other end of the sensor holder (1) protrudes into circuit sleeve (2)
One end is threadedly coupled with it；One end that the other end of the circuit sleeve (2) protrudes into Battery shell (3) is threadedly coupled with it；Institute
It states between sensor holder (1) and the connecting portion of circuit sleeve (2), the interconnecting piece of the circuit sleeve (2) and Battery shell (3)
High temperature high voltage resistant seal assembly is provided between position, and the high temperature high voltage resistant seal assembly is by the fluorubber that sets gradually along axial direction
Radial seal retaining ring (7), fluororubber O-type radial direction seal ring (6) and metal end-face seal ring (5) are composed.
2. the pressure gauge according to claim 1 suitable for the high temperature and pressure natural gas well, it is characterised in that: the sensor
One end outer wall that seat (1) protrudes into circuit sleeve (2) is provided with the first land that cooperation is held out against with circuit sleeve (2) end
(1.1), the end face of first land (1.1) is provided with the annular groove for setting metal end-face seal ring (5).
3. the pressure gauge according to claim 1 suitable for the high temperature and pressure natural gas well, it is characterised in that: the circuit set
One end outer wall that cylinder (2) protrudes into Battery shell (3) is provided with the second land that cooperation is held out against with the Battery shell (3) end
(2.1), the end face of second land (2.1) is provided with the annular groove for setting metal end-face seal ring (5).
4. the pressure gauge according to claim 1 suitable for the high temperature and pressure natural gas well, it is characterised in that: the pressure passes
Sensor (4) and the connecting portion of sensor holder (1) use laser welded seal.
5. the pressure gauge according to claim 1 suitable for the high temperature and pressure natural gas well, it is characterised in that: the metal end
Face sealing ring (5) is metal hollow O-ring seal or metal c-type sealing ring, the metal hollow O-ring seal or metal c-type
The matrix of sealing ring is stainless steel coil, and surface is provided with coating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820825963.9U CN208473851U (en) | 2018-05-30 | 2018-05-30 | Pressure gauge suitable for the high temperature and pressure natural gas well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820825963.9U CN208473851U (en) | 2018-05-30 | 2018-05-30 | Pressure gauge suitable for the high temperature and pressure natural gas well |
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| Publication Number | Publication Date |
|---|---|
| CN208473851U true CN208473851U (en) | 2019-02-05 |
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ID=65219386
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820825963.9U Active CN208473851U (en) | 2018-05-30 | 2018-05-30 | Pressure gauge suitable for the high temperature and pressure natural gas well |
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| CN (1) | CN208473851U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112610201A (en) * | 2020-12-10 | 2021-04-06 | 大庆市博瑞吉机械设备制造有限公司 | High-temperature anti-corrosion pressure gauge suitable for gas well test |
-
2018
- 2018-05-30 CN CN201820825963.9U patent/CN208473851U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112610201A (en) * | 2020-12-10 | 2021-04-06 | 大庆市博瑞吉机械设备制造有限公司 | High-temperature anti-corrosion pressure gauge suitable for gas well test |
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