CN206347304U - Device in a kind of L CNG sleds - Google Patents
Device in a kind of L CNG sleds Download PDFInfo
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- CN206347304U CN206347304U CN201621403584.8U CN201621403584U CN206347304U CN 206347304 U CN206347304 U CN 206347304U CN 201621403584 U CN201621403584 U CN 201621403584U CN 206347304 U CN206347304 U CN 206347304U
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- return
- air section
- high pressure
- pressure piston
- piston pump
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Abstract
The utility model discloses device in a kind of L CNG sleds, it is main by pump pond, high pressure piston pump component, first conduit and the second conduit are constituted, and high pressure piston pump component includes high pressure piston pump, feed tube and muffler, wherein muffler includes the first return-air section, second return-air section, three-way connection and temperature sensor, one end of the first return-air section is connected with the gas returning port of high pressure piston pump, another section of the first return-air section is connected with the first interface of three-way connection, one end of the second return-air section and the second interface of three-way connection are connected, the other end of the second return-air section is connected with one end of the second conduit, the probe of the temperature sensor extend into the first return-air section from after the 3rd interface insertion of three-way connection；The diameter parallel of the probe of the temperature sensor and the first return-air section.The diameter parallel of the probe of temperature sensor and the first return-air section in the utility model, so that temperature sensor may be inserted into enough depth, so as to improve the accuracy of temperature detection.
Description
Technical field
The utility model is related to L-CNG equipment and technologies, specifically device in a kind of L-CNG sleds.
Background technology
At present, high pressure piston pump is the indispensable important component of device in L-CNG (liquefied natural gas gasifying equipment) sleds.
The effect of high pressure piston pump is that 1.2MPa liquid LNG (liquefied natural gas) natural gas that will be forced down is added to 25MPa days of high pressure
Right gas.The liquified natural gas of low pressure in natural device storage tank is flowed into the pump of high pressure piston pump by the L-CNG water influent pipelines prized
In pond, thermogenetic gaseous natural gas is inhaled in this process and the course of work muffler is passed through by the gas returning port of high pressure piston pump
Road returns to natural gas storage tank.Can a pump condition for high pressure piston pump be L-CNG skid mounted equipments steady quality and normal work
Key, only when the pump pond of L-CNG high pressure piston pumps is completely submerged in the LNG natural gases of liquid, the starting of pump could be born
Carry and run well, normal work, the pressure output pressure of piston pump rear end can be only achieved the high-pressure natural gas required for rear end.
How to know and confirm whether be totally submerged in the pump pond of high pressure piston pump by liquid LNG natural gases, just into L-
The detection of device most critical in CNG sleds.Using the characteristic of liquified natural gas temperature extremely low (subzero more than 120 degree), to L-CNG
It is exactly most directly reliable detection high pressure piston pump that medium temperature in skid mounted equipment higher than the return line in pump pond, which is detected,
It is the method submerged by liquified natural gas.Current technology is that the side wall of the muffler in return line makes a hole, eyelet welding
A connecting pipe is connect, temperature sensor thermometric is subjected to from being inserted into communicating pipe in muffler, the probe and return pipe of temperature sensor
The vertical direction of the axis on road.
Temperature measurement structure defect in current L-CNG skid mounted equipments has three：One is that thermometric accuracy is difficult to ensure that, because
Be possible to muffler internal cause influences for gravity, and muffler the upper half is gas, and lower half is only liquid, is really immersed in liquified natural gas
In probe portion it is few, and the gaseous natural gas on probe top resident for a long time forms sealing gland；Two be the pipe to muffler inner return-air
Road sectional area has considerable influence to influence return-air flow velocity and efficiency, further influences whether the speed of feed liquor, temperature sensor
Deep pin have a cylinder, side surface direction projection is rectangle；Three be thermometric reaction speed it is slow, thermometric accuracy is poor.
Utility model content
The purpose of this utility model is to overcome the shortcomings of that above prior art is present there is provided a kind of thermometric accurately, can
Ensure device in the L-CNG sleds of high pressure piston pump functional reliability.
In order to achieve the above object, the utility model uses following technical scheme：Device in a kind of L-CNG sleds, including pump
Pond, high pressure piston pump component, the first conduit and the second conduit, the high pressure piston pump component include high pressure piston pump, feed tube
And muffler, the high pressure piston pump is installed on pump pond, and the inlet of the high pressure piston pump passes through feed tube and the first conduit
One end connection, the gas returning port of the high pressure piston pump is connected by muffler with one end of the second conduit；
The muffler includes the first return-air section, the second return-air section, three-way connection and temperature sensor, first return-air
One end of section is connected with the gas returning port of high pressure piston pump, and the other end of the first return-air section and the first interface of three-way connection connect
Connect, one end of the second return-air section and the second interface of three-way connection are connected, the other end and second of the second return-air section
One end connection of conduit, the probe of the temperature sensor extend into the first return-air from after the 3rd interface insertion of three-way connection
Section；The diameter parallel of the probe of the temperature sensor and the first return-air section.
It is preferred that, the central axis of the central shaft of the probe and the first return-air section is in same straight line.
It is preferred that, the probe is immersed in the first return-air section.
It is preferred that, the return-air pipe outer wall is cased with heat-insulation layer.
It is preferred that, the three-way connection includes supervisor portion and inclined tube portion, the one end in the inclined tube portion and the centre in supervisor portion
Connection；The first interface of the three-way connection, the 3rd interface and second interface are respectively positioned at the two ends and inclined tube portion in supervisor portion
Outer end；There is angle, the size of this angle is 20 °~75 ° between the supervisor portion and inclined tube portion.
It is preferred that, the high pressure piston pump component has 2 groups, and this 2 groups of high pressure piston pump components are symmetrical arranged.
The utility model has the following advantages and effect relative to prior art：
1st, muffler is main in device in this L-CNG sleds is passed by the first return-air section, the second return-air section, three-way connection and temperature
Sensor is constituted, and the wherein probe of temperature sensor inserts the first return-air section, and the probe of temperature sensor and the first return-air section
Diameter parallel, so that temperature sensor may be inserted into enough depth, so as to improve the accuracy of temperature detection.
2nd, in this L-CNG sleds in device the probe of temperature sensor and the first return-air section diameter parallel, i.e. probe and the
The flow direction of natural gas is parallel in one return-air section, and this takes cross-sectional area (the i.e. cross-sectional area of muffler of the first return-air section
It is small), so as to reduce the mobility of natural gas in muffler.
3rd, the probe of temperature sensor can be inserted into enough trials in device in this L-CNG sleds, so that the test section of probe
Position is completely submerged in the natural gas in muffler, so that the detection speed of temperature sensors.
Brief description of the drawings
Fig. 1 is the internal structure schematic diagram of device side-looking direction in the utility model L-CNG sleds.
Fig. 2 is the internal structure schematic diagram that device faces direction in the utility model L-CNG sleds.
Fig. 3 is the side view of the utility model three-way connection.
Fig. 4 is that the probe of temperature sensor of the present utility model is inserted back into the sectional view at tracheal strips.
Embodiment
For ease of it will be appreciated by those skilled in the art that below in conjunction with the accompanying drawings and embodiment makees further detailed to the utility model
Describe in detail bright.
As shown in Figure 1, Figure 2 and shown in Fig. 4, device in this L-CNG sleds, including pump pond 1, high pressure piston pump component 2, the first conduit
3 and second conduit 4, the high pressure piston pump component 2 includes high pressure piston pump 5, feed tube 6 and muffler 7, the high pressure injection plug
Pump 5 is installed on pump pond 1, and the inlet of the high pressure piston pump 5 is connected by feed tube 6 with one end of the first conduit 3, the height
The gas returning port of pressure piston pump 5 is connected by muffler 7 with one end of the second conduit 2；The muffler 7 include the first return-air section 8,
Second return-air section 9, three-way connection 10 and temperature sensor 11, one end of the first return-air section 8 and the return-air of high pressure piston pump 5
Mouth connection, the other end of the first return-air section 8 is connected with the first interface of three-way connection 10, and the one of the second return-air section 9
End is connected with the second interface of three-way connection 10, and the other end of the second return-air section 9 is connected with one end of the second conduit 4, institute
The probe 18 for stating temperature sensor 11 extend into the first return-air section 8 from after the 3rd interface insertion of three-way connection 10；The temperature
The diameter parallel of the return-air of probe 18 and first section 8 of sensor 11.Specifically, the first conduit 3 and second is led in actual use
Pipe 4 is connected with natural gas storage tank, and feed tube 6 is connected by the first conduit 3 with natural gas storage tank, then high pressure piston pump 5 is from day
The liquified natural gas that right gas storage tank is extracted enters pump pond 1 after the first conduit 3, feed tube 6 and high pressure piston pump 5 successively.And herein
During the gaseous natural gas that produces come out from the gas returning port of high pressure piston pump 5, then pass sequentially through the conduit 4 of muffler 7 and second
Enter natural gas storage tank afterwards.When gaseous natural gas flows through the first return-air section 8 of muffler 7, temperature sensor 11 is accurately measured
The temperature of this gaseous natural gas, is that staff judges whether high pressure piston pump 5 is submerged offer foundation.
The central axis of the central shaft of the probe 18 and the first return-air section 8 is in same straight line.This is further ensured that probe
Detection position can by the first return-air section in natural gas be totally submerged, to be further ensured that the accuracy of testing result.
The probe 18 is immersed in the first return-air section.This makes probe 18 completely to be wrapped by the natural gas in the first return-air section 8
Wrap up in, to improve the accuracy and reliability of detection structure.
As shown in figure 4, the outer wall of muffler 7 is cased with heat-insulation layer 12.Heat-insulation layer 12 reduces natural gas in muffler 7
Temperature is scattered and disappeared, and the accuracy whether high pressure piston pump 5 is submerged is judged according to the temperature of detection to improve staff.
As shown in figure 3, the three-way connection 10 includes supervisor portion 13 and inclined tube portion 14, the one end in the inclined tube portion 14 and master
Connection in the middle of pipe portion 13；First interface 15, the 3rd interface 17 and the second interface 16 of the three-way connection 10 are located at master respectively
The two ends of pipe portion 13 and the outer end in inclined tube portion 14；There is angle a, this angle a's is big between the supervisor portion 13 and inclined tube portion 14
Small is 20 °~75 °.The size of angle is 30 ° in the present embodiment, and this angle ensure that weather so in the smooth of return-air Bottomhole pressure
Property.
The high pressure piston pump component 2 has 2 groups, and this 2 groups of high pressure piston pump components 2 are symmetrical arranged.This structure ensure that
The working effect of device in L-CNG sleds.
Above-mentioned embodiment is preferred embodiment of the present utility model, and the utility model can not be defined,
Other any changes made without departing from the technical solution of the utility model or other equivalent substitute modes, are included in
Within protection domain of the present utility model.
Claims (6)
1. device in a kind of L-CNG sleds, it is characterised in that：Led including pump pond, high pressure piston pump component, the first conduit and second
Pipe, the high pressure piston pump component includes high pressure piston pump, feed tube and muffler, and the high pressure piston pump is installed on pump pond,
The inlet of the high pressure piston pump is connected by feed tube with one end of the first conduit, and the gas returning port of the high pressure piston pump leads to
One end that muffler is crossed with the second conduit is connected；
The muffler includes the first return-air section, the second return-air section, three-way connection and temperature sensor, the first return-air section
One end is connected with the gas returning port of high pressure piston pump, and the other end of the first return-air section and the first interface of three-way connection are connected,
One end of the second return-air section and the second interface of three-way connection are connected, the other end and the second conduit of the second return-air section
One end connection, the probe of the temperature sensor extend into the first return-air section from after the 3rd interface insertion of three-way connection；Institute
State the probe of temperature sensor and the diameter parallel of the first return-air section.
2. device in a kind of L-CNG sleds according to claim 1, it is characterised in that：The central shaft of the probe and first
The central axis of return-air section is in same straight line.
3. device in a kind of L-CNG sleds according to claim 1, it is characterised in that：The probe is immersed in the first return-air
Section.
4. device in a kind of L-CNG sleds according to claim 1, it is characterised in that：The return-air pipe outer wall is cased with insulation
Layer.
5. device in a kind of L-CNG sleds according to claim 1, it is characterised in that：The three-way connection includes supervisor portion
With inclined tube portion, the middle connection of the one end and supervisor portion in the inclined tube portion；The first interface of the three-way connection, the 3rd interface and
Second interface is respectively positioned at the two ends and the outer end in inclined tube portion in supervisor portion；There is angle between the supervisor portion and inclined tube portion, this
The size of angle is 20 °~75 °.
6. device in a kind of L-CNG sleds according to claim 1, it is characterised in that：The high pressure piston pump component has 2
Group, this 2 groups of high pressure piston pump components are symmetrical arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621403584.8U CN206347304U (en) | 2016-12-20 | 2016-12-20 | Device in a kind of L CNG sleds |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621403584.8U CN206347304U (en) | 2016-12-20 | 2016-12-20 | Device in a kind of L CNG sleds |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206347304U true CN206347304U (en) | 2017-07-21 |
Family
ID=59317671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621403584.8U Active CN206347304U (en) | 2016-12-20 | 2016-12-20 | Device in a kind of L CNG sleds |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206347304U (en) |
-
2016
- 2016-12-20 CN CN201621403584.8U patent/CN206347304U/en active Active
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