CN205297926U - What hydrojet did not have an oily helical -lobe compressor prevents high temperature interlock protection device and protection mechanism thereof - Google Patents
What hydrojet did not have an oily helical -lobe compressor prevents high temperature interlock protection device and protection mechanism thereof Download PDFInfo
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- CN205297926U CN205297926U CN201521080545.4U CN201521080545U CN205297926U CN 205297926 U CN205297926 U CN 205297926U CN 201521080545 U CN201521080545 U CN 201521080545U CN 205297926 U CN205297926 U CN 205297926U
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- hydrojet
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- screw compressor
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Abstract
The utility model discloses a what the hydrojet did not have an oily helical -lobe compressor prevents high temperature interlock protection device, include barrel, liquid inlet takeover, liquid outlet takeover, fluid infusion takeover, communicating pipe, go up orifice plate, lower orifice plate, go up blind plate, lower blind plate and liquid level measurement part. It fixes respectively at barrel upper end and lower extreme with lower blind plate to go up the blind plate to enclose into closing inner cavity jointly with the barrel. Upper and lower orifice plate setting is in the inner chamber, and wall chamber and liquid level chamber are separated into with the inner chamber to lower orifice plate. Liquid inlet takes over, the liquid outlet is taken over, the fluid infusion is taken over all and the liquid level chamber communicates. One end and the wall chamber intercommunication of communicating pipe, the other end and environment intercommunication. Being connected with the guide pillar between upper and lower orifice plate, being connected with the slide on the guide pillar, the slide can reciprocate along the guide pillar under the effect of liquid. The utility model also discloses a what the hydrojet did not have an oily helical -lobe compressor prevents high temperature interlock protection mechanism. The utility model discloses ability real -time supervision helical -lobe compressor's hydrojet state to the inessential shut down that arouses when avoiding briefly breaking liquid.
Description
Technical field
This utility model relates to hydrojet oil free screw compressor, particularly relates to the high temperature-proof occlusion protection equipment of hydrojet oil free screw compressor.
Background technology
Oil free screw compressor is the positive displacement compressor that a kind of inside exists minim gap. In normal operating temperature range, between negative and positive rotor, do not contact with each other between rotor and cylinder block, it is ensured that the long-term operation of compressor. When the delivery temperature of compressor has exceeded working range, will cause that rotor produces thermal expansion, cause the occlusion of compressor. For this, it usually needs the outlet at compressor arranges high temperature interlock protection.
Owing to the air vent of liquid jet type oil free screw compressor exists the gas-liquid two-phase that temperature is different, in actual thermometric process, it is difficult to reach the maximum temperature of real?time precision measurment cavity. When disconnected liquid suddenly; actual temperature within compressor cavity rises rapidly; and the temperature measuring device of air vent cannot be followed the tracks of in time within the relatively short time, cause that the high interlock protection mechanism of delivery temperature cannot play the purpose of real high temperature-proof occlusion. Therefore, many existing Engineering Projects show, once liquid jet type oil free screw compressor disconnected liquid suddenly, the serious accident that rotor is engaged very easily occur, affect the long period steady production of factory. If the medium compressed is component inflammable and explosive under the high temperature such as acetylene, butadiene, once disconnected liquid even has the serious accident that combustion explosion occurs.
On the one hand, liquid, for liquid jet type oil free screw compressor, is important internal cooling material. In the presence of a liquid, even if there is small friction inside compressor, liquid remains able to the mode by gasifying or conduct heat, and removes rapidly fricative heat. Avoid the further development of friction position thermal expansion. But when disconnected liquid, heat produced by the friction of the little area in local can not get removing timely, will cause the diffusion of differential expansion, and cause that more position will rub. This vicious cycle will cause the occlusion of rotor occurrence of large-area.
On the other hand, under Part load, the liquid flowing state in sparge pipe is plug flow.Now, hydrojet will appear from discontinuous situation, but owing to the time is extremely short, the temperature of rotor not yet reaches the temperature being mutually twisted. Compressor is able to adapt to this operating mode, it is impossible to enough carry out Concatenate shut-down, causes that normal production is affected.
Therefore, to really play the purpose of protection liquid jet type oil free screw compressor, it is necessary to arrange special mechanism and hydrojet situation is detected.
Summary of the invention
Technical problem to be solved in the utility model is in that to provide the high temperature-proof occlusion protection device of a kind of hydrojet oil free screw compressor; its can with outside controller with the use of; realize monitoring in real time the hydrojet state of helical-lobe compressor; compressor is made and protects in time, and the inessential shutdown caused during of short duration disconnected liquid can be avoided.
Another technical problem to be solved in the utility model is in that to provide the mechanism of a kind of high temperature-proof occlusion protection device adopting above-mentioned hydrojet oil free screw compressor.
For solving above-mentioned technical problem, technical solution adopted in the utility model is:
The high temperature-proof occlusion protection device of a kind of hydrojet oil free screw compressor, including cylinder, liquid inlet adapter, liquid outlet adapter, fluid infusion adapter, communicating pipe, up-hole plate, orifice plate, upper blind plate, lower blind plate and level gauging parts; Upper blind plate and lower blind plate are separately fixed at the top and bottom of cylinder, and jointly surround one with cylinder for housing the closing inner chamber of liquid; Up-hole plate and orifice plate are arranged in the lumen, and inner chamber is separated into and is positioned at cutting off chamber and being positioned at the liquid level chamber below orifice plate above up-hole plate by orifice plate; Liquid inlet adapter, liquid outlet adapter, fluid infusion adapter all connect with liquid level chamber; One end of communicating pipe is connected on blind plate, and connects with cutting off chamber, the other end of communicating pipe and environmental communication; Being connected to guide pillar between up-hole plate and orifice plate, guide pillar is connected to slide plate, this slide plate can move up and down along guide pillar under the effect of liquid; Level gauging parts are fixed on cylinder.
The invention also discloses the high temperature-proof of a kind of hydrojet oil free screw compressor occlusion protection mechanism, the high temperature-proof including controller, fluid supplement solenoid valve and above-mentioned hydrojet oil free screw compressor is engaged protection device; Liquid inlet adapter, liquid outlet adapter and fluid infusion adapter connect the hydrojet pipeline of hydrojet oil free screw compressor, hydrojet pipe nipple and fluid infusion pipeline respectively; Fluid supplement solenoid valve is arranged on fluid infusion pipeline; The signal output part of level gauging parts electrically connects with the signal input part of controller; first signal output part of controller electrically connects with the control input of fluid supplement solenoid valve, and the secondary signal outfan of controller electrically connects with the control signal input performing circuit of shutting down of hydrojet oil free screw compressor.
After adopting technique scheme, this utility model at least has following technical effect that
1, this utility model is in normal operation, and slide plate can seal communicating pipe, it is ensured that the operation that hydrojet is follow-up will not be produced impact by the pressure of sparge pipe, such as atomizing effect; When disconnected liquid suddenly, liquid level can being passed through and reflect the inside hydrojet state of reality, thus making breakdown judge in time, and being controlled the action realization timely protection to compressor shutting down execution circuit of fluid supplement solenoid valve or compressor by controller; When sparge pipe plug flow, it is possible to prevent false judgment, it is to avoid compressor mistake is shut down;
2, this utility model simple in construction, reliability is high.
Accompanying drawing explanation
Fig. 1 illustrates the structural representation of the high temperature-proof occlusion protection device of the hydrojet oil free screw compressor according to this utility model one embodiment.
Fig. 2 illustrates the cross-sectional view of the high temperature-proof occlusion protection device of the hydrojet oil free screw compressor according to this utility model one embodiment.
Fig. 3 illustrates the schematic diagram of the high temperature-proof occlusion protection mechanism of the hydrojet oil free screw compressor according to this utility model one embodiment.
Fig. 4 illustrates the signal schematic representation of the fluid level condition monitoring according to this utility model one embodiment.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, this utility model is described in detail.
Refer to Fig. 1 and Fig. 2. The high temperature-proof occlusion protection device of the hydrojet oil free screw compressor according to this utility model one embodiment, including cylinder 11, liquid inlet adapter 12, liquid outlet adapter 13, fluid infusion adapter 14, communicating pipe 15, level gauging parts 16 and up-hole plate 111, orifice plate 112, upper blind plate 117 and lower blind plate 118.
Upper blind plate 117 and lower blind plate 118 are separately fixed at the top and bottom of cylinder 11, and jointly surround one with cylinder for housing the closing inner chamber of liquid. Up-hole plate 111 and orifice plate 112 arrange in the lumen, and up-hole plate 111 and orifice plate 112 are provided with the through hole that multiple through-thickness is through. The edge of orifice plate 112 is connected (for being welded to connect in the present embodiment) with the internal chamber wall of cylinder, is separated into by the inner chamber of cylinder and is positioned at cutting off chamber 113 and being positioned at the liquid level chamber 114 below orifice plate above up-hole plate. Cut off chamber 113 in up-small and down-big pyramidal structure. Liquid inlet adapter 12, liquid outlet adapter 13, fluid infusion adapter 14 all connect with liquid level chamber 114; The trend of liquid outlet adapter 13 is first downward-sloping horizontal-extending again. One end of communicating pipe 15 is connected on blind plate 117, and upper blind plate 117 offers through hole in the position corresponding with communicating pipe 15 so that one end of communicating pipe 15 with cut off chamber 113 and formed and connect, the other end of communicating pipe 15 and environmental communication.
Being connected to guide pillar 115 between up-hole plate 111 and orifice plate 112, guide pillar 115 is connected to slide plate 116, the density of material of this slide plate, less than fluid density, can move up and down along guide pillar 115 under the effect of liquid. In the present embodiment, guide pillar 115 is double head belt screw thread, middle smooth bolt, and the lower part of guide pillar 115 is through orifice plate 112, and fixes with clamping nut, and the upper part of guide pillar 115 sequentially passes through slide plate 116 and up-hole plate 112, and fixes with nut. The top and bottom of cylinder 111 have been also respectively connected with upper flange 119 and lower flange 120, and upper blind plate 117 is connected by the mode welded with the upper surface of upper flange 119, and lower blind plate 118 is connected by the mode welded with the lower surface of lower flange 120.
Level gauging parts 16 are fixed on cylinder 11, can measure the liquid level in liquid level chamber 114. In the present embodiment, level gauging parts 16 are a fluid level transmitter, and fluid level transmitter is connected to the side of cylinder 11 by upper and lower two level gauging pipes 17,18.
Refer to Fig. 3. The high temperature-proof occlusion protection mechanism of the hydrojet oil free screw compressor according to this utility model one embodiment, the high temperature-proof including controller 2, fluid supplement solenoid valve 3 and above-mentioned hydrojet oil free screw compressor is engaged protection device.
Liquid inlet adapter 12, liquid outlet adapter 13 and fluid infusion adapter 14 connect the hydrojet pipeline 4 of hydrojet oil free screw compressor, hydrojet pipe nipple 5 and fluid infusion pipeline 6 respectively;Fluid supplement solenoid valve 3 is arranged on fluid infusion pipeline 6.
The signal output part of level gauging parts 16 electrically connects with the signal input part of controller 2; first signal output part of controller 2 electrically connects with the control input of fluid supplement solenoid valve 3, and the secondary signal outfan of controller 2 electrically connects with the control signal input performing circuit (not shown) of shutting down of hydrojet oil free screw compressor. This shutdown performs circuit and is generally made up of relay. Controller 2 can adopt PLC or DCS controller.
The operation principle of the high temperature-proof occlusion protection mechanism of the hydrojet oil free screw compressor according to this utility model one embodiment is as follows:
(1) in normal operation: slide plate 116 is pushed away by liquid along guide pillar 115, covering up-hole plate 111 completely, be sealed against, communicating pipe 15 disconnects; Fluid level transmitter 16 shows that liquid level is normal level, and liquid carries out hydrojet by cylinder from liquid outlet adapter 13 outflow, keeps hydrojet pressure;
(2) when there is disconnected liquid suddenly, the fluid pressure in cylinder 11 declines, and liquid is under gravity by liquid outlet adapter 13 hydrojet, and liquid level declines, and when liquid level drops to orifice plate less than 112, slide plate 116 declines accordingly; Liquid level chamber 114 is by being connected with environment communicating pipe 15, it is ensured that liquid level can decline under gravity smoothly. In the course of the work, the level measurement that level gauging parts 16 can be sent by controller 2 in real time compares with the first level threshold preset and the second level threshold. After there is disconnected liquid, if controller 2 detects that level measurement lower than the first level threshold and continues the first preset time T 1, then controller 2 is understood and be sent start signal to fluid supplement solenoid valve 3, with by fluid infusion pipeline 6 to cylinder 11 fluid infusion; If controller 2 detects that again level measurement lower than the second level threshold and continues the second preset time T 2 afterwards, then controller 2 can send Concatenate shut-down signal to shutting down execution circuit, makes compressor shutdown. Wherein, the second level threshold is less than the first level threshold, and the second preset time T 2 is less than or equal to the first preset time T 1. In the present embodiment, the first preset time T 1 is 5��20 seconds, and the second preset time T 2 is 5��15 seconds.
(3) when plug flow occurs in the gas-liquid two-phase in sparge pipe, there is of short duration disconnected liquid in liquid, controller 2 can detect that the liquid level state lower than the first default level threshold according to the level measurement of level gauging parts 16, and this state can eliminate by nature when liquid recovers jet flow; Therefore this state duration is typically not more than the first preset time T 1, even if beyond the first preset time T 1, also can recover rapidly normal after fluid infusion. Controller 2 will not send Concatenate shut-down signal, and compressor can continuous service.
Fig. 4 is the signal schematic representation of this utility model fluid level condition monitoring. The fluid level condition monitoring display of this utility model liquid jet type oil free screw compressor high temperature-proof occlusion protection mechanism, including situations below:
(1) normal condition: as shown in curve a, now compressor bank is properly functioning, does not shut down.
(2) disconnected liquid situation: as shown in curve b, now compressor start Concatenate shut-down protection.
(3) plunger situation: as shown in curve c, now compressor keeps properly functioning.
This utility model can monitor the hydrojet state of helical-lobe compressor in real time, protects compressor in time. Meanwhile, this utility model does not affect hydrojet effect, it is to avoid the inessential shutdown caused during of short duration disconnected liquid.There is simple in construction, high reliability.
Claims (7)
1. the high temperature-proof occlusion protection device of a hydrojet oil free screw compressor, it is characterized in that, including cylinder, liquid inlet adapter, liquid outlet adapter, fluid infusion adapter, communicating pipe, up-hole plate, orifice plate, upper blind plate, lower blind plate and level gauging parts;
Described upper blind plate and lower blind plate are separately fixed at the top and bottom of described cylinder, and jointly surround one for housing the closing inner chamber of liquid with described cylinder; Described up-hole plate and orifice plate are arranged in described inner chamber, and described inner chamber is separated into and is positioned at cutting off chamber and being positioned at the liquid level chamber below orifice plate above up-hole plate by described orifice plate; Described liquid inlet adapter, liquid outlet are taken over, fluid infusion adapter all connects with described liquid level chamber; One end of described communicating pipe is connected on blind plate, and connects with described partition chamber, the other end of described communicating pipe and environmental communication; Being connected to guide pillar between up-hole plate and orifice plate, guide pillar is connected to slide plate, this slide plate can move up and down along guide pillar under the effect of liquid;
Described level gauging parts are fixed on described cylinder.
2. the high temperature-proof occlusion protection device of hydrojet oil free screw compressor according to claim 1; it is characterized in that; the top and bottom of described cylinder are connected to upper flange and lower flange; described upper blind plate is connected with the upper surface of described upper flange, and described lower blind plate is connected with the lower surface of described lower flange.
3. the high temperature-proof occlusion protection device of hydrojet oil free screw compressor according to claim 1; it is characterized in that; described level gauging parts are fluid level transmitter, and described fluid level transmitter is connected to the side of described cylinder by upper and lower two level gauging pipes.
4. the high temperature-proof occlusion protection device of hydrojet oil free screw compressor according to claim 1, it is characterised in that described partition chamber is up-small and down-big pyramidal structure.
5. the high temperature-proof occlusion protection mechanism of a hydrojet oil free screw compressor, it is characterised in that include the high temperature-proof occlusion protection device of controller, fluid supplement solenoid valve and the hydrojet oil free screw compressor as in any of the one of Claims 1-4;
Described liquid inlet adapter, liquid outlet adapter and fluid infusion adapter connect the hydrojet pipeline of hydrojet oil free screw compressor, hydrojet pipe nipple and fluid infusion pipeline respectively; Described fluid supplement solenoid valve is arranged on described fluid infusion pipeline;
The signal output part of level gauging parts electrically connects with the signal input part of described controller; first signal output part of described controller electrically connects with the control input of described fluid supplement solenoid valve, and the secondary signal outfan of described controller electrically connects with the control signal input performing circuit of shutting down of hydrojet oil free screw compressor.
6. the high temperature-proof occlusion protection mechanism of hydrojet oil free screw compressor according to claim 5, it is characterised in that described controller is PLC or DCS controller.
7. the high temperature-proof occlusion protection mechanism of hydrojet oil free screw compressor according to claim 5, it is characterised in that it is relay that described shutdown performs circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521080545.4U CN205297926U (en) | 2015-12-21 | 2015-12-21 | What hydrojet did not have an oily helical -lobe compressor prevents high temperature interlock protection device and protection mechanism thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521080545.4U CN205297926U (en) | 2015-12-21 | 2015-12-21 | What hydrojet did not have an oily helical -lobe compressor prevents high temperature interlock protection device and protection mechanism thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205297926U true CN205297926U (en) | 2016-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521080545.4U Withdrawn - After Issue CN205297926U (en) | 2015-12-21 | 2015-12-21 | What hydrojet did not have an oily helical -lobe compressor prevents high temperature interlock protection device and protection mechanism thereof |
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| Country | Link |
|---|---|
| CN (1) | CN205297926U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105386977A (en) * | 2015-12-21 | 2016-03-09 | 上海齐耀螺杆机械有限公司 | Anti-high-temperature-engagement protection device and anti-high-temperature-engagement protection mechanism for liquid-spray oilless screw compressor |
-
2015
- 2015-12-21 CN CN201521080545.4U patent/CN205297926U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105386977A (en) * | 2015-12-21 | 2016-03-09 | 上海齐耀螺杆机械有限公司 | Anti-high-temperature-engagement protection device and anti-high-temperature-engagement protection mechanism for liquid-spray oilless screw compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160608 Effective date of abandoning: 20170804 |
|
| AV01 | Patent right actively abandoned |