CN221348154U - Rotary opening type check valve - Google Patents
Rotary opening type check valve Download PDFInfo
- Publication number
- CN221348154U CN221348154U CN202323097218.7U CN202323097218U CN221348154U CN 221348154 U CN221348154 U CN 221348154U CN 202323097218 U CN202323097218 U CN 202323097218U CN 221348154 U CN221348154 U CN 221348154U
- Authority
- CN
- China
- Prior art keywords
- valve
- pressure sensor
- fixing plate
- clack
- limit switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000007789 sealing Methods 0.000 claims abstract description 17
- 239000011347 resin Substances 0.000 abstract description 13
- 229920005989 resin Polymers 0.000 abstract description 13
- 230000005611 electricity Effects 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 20
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 2
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- -1 acetic acid Chemical class 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
- 235000019253 formic acid Nutrition 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003957 anion exchange resin Substances 0.000 description 1
- 150000001449 anionic compounds Chemical class 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003729 cation exchange resin Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910001412 inorganic anion Inorganic materials 0.000 description 1
- 239000003456 ion exchange resin Substances 0.000 description 1
- 229920003303 ion-exchange polymer Polymers 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Check Valves (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
Abstract
The utility model discloses a swing check valve, which comprises a valve body, a limit switch and a valve clack; the valve body is provided with an inner cavity, a first fixing plate and a second fixing plate are arranged on the upper side wall of the inner cavity, the limit switch is arranged at the bottom of the first fixing plate, and the valve clack is hinged with the second fixing plate; the downside of valve body inner chamber is as the passageway, be provided with in the passageway with valve clack sealing fit's disk seat, be equipped with a plurality of first pressure sensor on the disk seat, the second pressure sensor install in on the valve clack, second pressure sensor, limit switch, first pressure sensor all are connected with external equipment electricity, and this check valve can send self operating condition in real time, sends simultaneously when high-speed mixed bed resin is backward flowing and reminds.
Description
Technical Field
The utility model belongs to the technical field of valve design, and relates to a swing check valve.
Background
At present, the pressure of a condensate pump is suddenly reduced in the running process of a considerable part of domestic power plants, or the condensate pump is suddenly lost in pressure due to power failure, so that high-speed mixed bed resin flows back into a front pipeline along with water flow and flows back into a condenser hot well, and in the next starting process of the condensate pump, the condensate pump enters a water supply pipeline through a mixed bed bypass system, a filter screen in front of the water supply pump is blocked, and even a shutdown accident is caused. In addition, after the ion exchange resin enters into a thermodynamic system such as a deaerator, the degradation speed of the anion exchange resin is very rapid at 150 ℃, the cation exchange resin starts to degrade at 150 ℃, and the degradation is very severe when the temperature is increased to 200 ℃. They release low molecular organic acids, mainly acetic acid, but also formic acid, propionic acid, etc., and inorganic anions such as chloride ion, sulfate ion, etc., at high temperature and high pressure. Anions generated after the resin is heated and decomposed can cause the pH value of furnace water to be reduced, acid corrosion is formed, hydrogen embrittlement occurs at serious moment, the furnace tube is burst in a short time, and the safe operation of the boiler is directly affected. The water quality of the furnace water is deteriorated, the steam carrying is increased, the steam quality is further affected, salt is accumulated in the through-flow part of the superheater and the steam turbine, the efficiency of the steam turbine is affected, and the tube explosion of the superheater can be caused when the salt is serious. The distribution system of acidic substances such as sulfuric acid, formic acid and acetic acid in the steam is very small, and particularly, the steam can cause acidic corrosion to a wet area of a steam turbine, such as a low-pressure section baffle plate, a baffle plate sleeve, a low-pressure cylinder inlet steam distributing device, a steam exhaust chamber and the like, so that a surface protection film of the steam is fallen off to form corrosion grooves, and the surface is rough and honeycomb-shaped, so that equipment is damaged.
In addition, after resin leaks into the thermodynamic system, mixed bed resin is seriously lost, so that the operation and regeneration of a high-speed mixed bed are seriously adversely affected, the cost for purchasing new resin is very high, and a great economic burden is caused for enterprises.
There are two solutions currently adopted: firstly, install the resin trapper on the inlet channel, have the problem that pipeline resistance is too big, and the position is narrow and small, difficult installation, therefore the current use is few. In addition, there are individual enterprises to install the check valve on the inlet pipeline, but because of lack of indication, whether the check valve acts or whether the check valve is tightly closed after the action is not known, and popularization and application are limited.
Therefore, how to develop a swing check valve, monitor the working state of the check valve in real time, and send out a prompt when the high-speed mixed bed resin flows backward, so as to effectively prevent accidents such as shutdown and thermodynamic system corrosion caused by the backward flow of the high-speed mixed bed resin into the thermodynamic system, and the technical problem to be solved by the person in the field is urgent.
Disclosure of utility model
The utility model aims to overcome the defects of the prior art, and provides a swing check valve which can send the working state of the check valve in real time and send a prompt when high-speed mixed bed resin flows backward.
In order to achieve the above purpose, the utility model discloses a swing check valve, which comprises a valve body, a limit switch and a valve clack;
The valve body is provided with an inner cavity, a first fixing plate and a second fixing plate are arranged on the upper side wall of the inner cavity, the limit switch is arranged at the bottom of the first fixing plate, and the valve clack is hinged with the second fixing plate; the lower side of valve body inner chamber is as the passageway, be provided with in the passageway with valve clack sealing fit's disk seat, be equipped with a plurality of first pressure sensor on the disk seat, the second pressure sensor install in on the valve clack, second pressure sensor, limit switch, first pressure sensor all are connected with external equipment electricity.
The valve clack includes valve clack body, installed part, valve rod and articulated elements, wherein, the upper end of articulated elements is fixed in on the second fixed plate, the one end of valve rod with the lower extreme of articulated elements articulates mutually, the other end of valve rod is provided with the dog, the dog with limit switch's position is corresponding, the installed part cup joint in the middle part of valve rod, the installed part connect in on the valve clack body, the second pressure sensor install in on the valve clack body and be close to the position department of installed part.
The middle part of installed part is provided with the through-hole, and the valve rod passes the through-hole.
The valve rod is arranged on the inner side of the mounting piece, and the valve rod is connected with the valve rod in a sleeved mode.
The valve seat is provided with a mounting groove, and each first pressure sensor is mounted on the mounting groove.
One side of the first pressure sensor is abutted to the bottom surface of the mounting groove, a sealing rubber ring in sealing fit with the valve clack body is further arranged on the mounting groove, and the other side of the first pressure sensor is abutted to the sealing rubber ring.
The valve cover is connected to the top opening of the valve body.
The valve cover is connected to the top opening of the valve body through bolts.
The utility model has the following beneficial effects:
When the swing check valve is specifically operated, when the high-speed mixed bed is in a normal running state, the valve clack is opened under the action of water flow and is abutted against the limit switch, and the limit switch generates an electric signal; when the high-speed mixed bed is in a standby state after exiting from operation, the valve clack is closed under the action of gravity and is in contact with the first pressure sensor, the first pressure sensor sends an electric signal, and when the high-speed mixed bed is in operation, countercurrent occurs due to sudden pressure reduction of the condensate pump or sudden pressure loss of the condensate pump, namely, when the high-speed mixed bed resin flows backward, the valve clack is closed under the pushing of reverse water flow, the first pressure sensor generates an electric signal, the second pressure sensor generates an electric signal after detecting acting force generated by reverse water flow, the working state of the valve clack is sent in real time, and meanwhile, reminding is sent when the high-speed mixed bed resin flows backward.
Drawings
Fig. 1 is a schematic view of the structure of the present utility model when the valve flap 3 is opened;
Fig. 2 is a schematic structural view of the present utility model when the valve flap 3 is closed;
Fig. 3 is a schematic view of the structure of the mounting member 32 according to the present utility model.
The valve comprises a valve body 1, a first fixed plate 11, a second fixed plate 12, a valve cover 2, a valve clack 3, a valve clack body 31, a mounting piece 32, a through hole 321, an adjusting bolt 33, a valve rod 34, a hinge piece 35, a stop 351, a limit switch 4, a first pressure sensor 5, a second pressure sensor 6, a channel 7, a valve seat 8, a mounting groove 81 and a sealing rubber ring 9.
Detailed Description
In order to make the present utility model better understood by those skilled in the art, the following description will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments, but not intended to limit the scope of the present disclosure. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the concepts of the present disclosure. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.
In the accompanying drawings, there is shown a schematic structural diagram in accordance with a disclosed embodiment of the utility model. The figures are not drawn to scale, wherein certain details are exaggerated for clarity of presentation and may have been omitted. The shapes of the various regions, layers and their relative sizes, positional relationships shown in the drawings are merely exemplary, may in practice deviate due to manufacturing tolerances or technical limitations, and one skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions as actually required.
Referring to fig. 1, 2 and 3, the swing check valve of the present utility model includes a valve body 1, a valve cover 2, a valve clack 3, a limit switch 4, a first pressure sensor 5 and a second pressure sensor 6, wherein the valve cover 2 is connected to a top opening of the valve body 1 through a bolt, a first fixing plate 11 and a second fixing plate 12 are disposed on an upper side wall of an inner cavity of the valve body 1, the limit switch 4 is mounted at a bottom of the first fixing plate 11, and the valve clack 3 is hinged with the second fixing plate 12; the lower side of valve body 1 is provided with passageway 7, be provided with in the passageway 7 with valve clack 3 sealing fit's disk seat 8, be equipped with a plurality of first pressure sensor 5 on the disk seat 8, second pressure sensor 6 install in on the valve clack 3, second pressure sensor 6, limit switch 4, first pressure sensor 5 all are connected with external equipment electricity.
Specifically, the valve clack 3 includes a valve clack body 31, an installation member 32, an adjusting bolt 33, a valve rod 34 and a hinge member 35, wherein, the upper end of the hinge member 35 is fixed on the second fixed plate 12, one end of the valve rod 34 is hinged with the lower end of the hinge member 35, the other end of the valve rod 34 is provided with a stop block 351, the stop block 351 corresponds to the position of the limit switch 4, the installation member 32 is sheathed in the middle part of the valve rod 34, and the installation member 32 is connected to the valve clack body 31. Specifically, the limit switch 4 is used for detecting whether the valve clack body 31 is completely opened, when the high-speed mixed bed is in a normal running state, the valve clack body 31 is opened under the action of water flow, the stop 351 arranged on the tail end of the valve rod 34 is in contact with the limit switch 4, and the limit switch 4 converts mechanical acting force into an electric signal under the acting force of the stop 351 and outputs the electric signal to external equipment.
Specifically, the middle part of the mounting member 32 is provided with a through hole 321, and the valve rod 34 passes through the through hole 321, so that the mounting member 32 is slidably connected with the valve rod 34 through the through hole 321, and the adjusting bolt 33 is inserted into the mounting member 32 and then abuts against the valve rod 34. Specifically, the installation of the mounting member 32 not only facilitates the adjustment of the relative positions of the valve clack body 31 and the valve rod 34, but also facilitates the maintenance and replacement operations of the valve clack body 31.
Specifically, the second pressure sensor 6 is mounted on the valve flap body 31 at a position close to the mounting member 32. Specifically, the second pressure sensor 6 is configured to detect a pressure of the reverse water flow, and when the high-speed mixed bed is in countercurrent, the valve clack body 31 is closed under the pushing of the reverse water flow, and the second pressure sensor 6 detects an acting force generated by the reverse water flow, generates an electrical signal, and outputs the electrical signal to the external device.
Specifically, the valve seat 8 is provided with a mounting groove 81, each first pressure sensor 5 is mounted on the mounting groove 81, one side of the first pressure sensor 5 is abutted against the bottom surface of the mounting groove 81, the mounting groove 81 is further provided with a sealing rubber ring 9 in sealing fit with the valve clack body 31, and the other side of the first pressure sensor 5 is abutted against the sealing rubber ring 9. When the valve clack is in operation, the first pressure sensor 5 is used for detecting whether the valve clack body 31 is completely closed, and when the valve clack body 31 is closed under the action of self gravity or reverse water flow thrust, the first pressure sensor 5 generates an electric signal after detecting acting force generated by the valve clack body 31 and outputs the electric signal to external equipment; specifically, the sealing rubber ring 9 not only can transmit the acting force generated by the valve clack body 31 to the first pressure sensor 5, but also can increase the tightness of the valve clack body 31 and the valve seat 8.
Specifically, when in use, the utility model is arranged on a horizontal water inlet pipeline positioned after the water inlet starting valve of the high-speed mixed bed and before the air pipe is emptied, so that the utility model is as close to the water inlet of the high-speed mixed bed as possible and is electrically connected with the upper machine position of the control room.
The working process of the utility model is as follows:
1) When the high-speed mixed bed is in a normal running state, the valve clack body 31 is opened under the action of water flow, the stop block 351 arranged at the tail end of the valve rod 34 is abutted against the limit switch 4, the limit switch 4 is driven by the acting force of the stop block 351 to convert mechanical acting force into an electric signal, at the moment, the limit switch 4 generates the electric signal, the first pressure sensor 5 and the second pressure sensor 6 do not generate the electric signal, and the check valve is displayed to be normally fully opened on a picture of the machine position on the control room;
2) When the high-speed mixed bed is in a standby state after exiting from operation, the valve clack body 31 is closed under the action of gravity, the valve clack body 31 is in close contact with the sealing rubber ring 9, acting force is transmitted to the first pressure sensor 5 through the sealing rubber ring 9, an electric signal is generated after the first pressure sensor 5 detects the acting force of the valve clack body 31, but the second pressure sensor 6 arranged on the valve clack body 31 does not detect pressure and does not generate an electric signal, at the moment, the first pressure sensor 5 generates an electric signal, the limit switch 4 and the second pressure sensor 6 do not generate an electric signal, and a picture of the upper machine position of a control room displays that the check valve is normally closed;
When the high-speed mixed bed operates, the valve clack body 31 is closed under the pushing of reverse water flow due to the sudden pressure reduction of the condensate pump or the sudden pressure loss of the condensate pump, the first pressure sensor 5 generates an electric signal after detecting the acting force of the valve clack body 31, the second pressure sensor 6 generates an electric signal after detecting the acting force generated by reverse water flow, at the moment, the first pressure sensor 5 and the second pressure sensor 6 generate electric signals, the limit switch 4 does not generate electric signals, the XX mixed bed is displayed on a screen of the machine position on the control room to generate reverse flow, the attention of operators is reminded, and the phenomenon of resin backflow occurs.
Finally, it should be noted that: the above embodiments are only for illustrating the technical aspects of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the above embodiments, it should be understood by those of ordinary skill in the art that: modifications and equivalents may be made to the specific embodiments of the utility model without departing from the spirit and scope of the utility model, which is intended to be covered by the claims.
Claims (8)
1. The rotary-opening check valve is characterized by comprising a valve body (1), a limit switch (4) and a valve clack (3);
The valve body (1) is provided with an inner cavity, a first fixing plate (11) and a second fixing plate (12) are arranged on the upper side wall of the inner cavity, the limit switch (4) is arranged at the bottom of the first fixing plate (11), and the valve clack (3) is hinged with the second fixing plate (12); the valve is characterized in that the lower side of the inner cavity of the valve body (1) is used as a channel (7), a valve seat (8) which is in sealing fit with the valve clack (3) is arranged in the channel (7), a plurality of first pressure sensors (5) are arranged on the valve seat (8), second pressure sensors (6) are arranged on the valve clack (3), and the second pressure sensors (6), the limit switch (4) and the first pressure sensors (5) are electrically connected with external equipment.
2. The swing check valve according to claim 1, wherein the valve clack (3) comprises a valve clack body (31), a mounting member (32), a valve rod (34) and a hinge member (35), wherein the upper end of the hinge member (35) is fixed on the second fixing plate (12), one end of the valve rod (34) is hinged with the lower end of the hinge member (35), the other end of the valve rod (34) is provided with a stop block (351), the stop block (351) corresponds to the position of the limit switch (4), the mounting member (32) is sleeved on the middle part of the valve rod (34), the mounting member (32) is connected to the valve clack body (31), and the second pressure sensor (6) is mounted on the valve clack body (31) and is close to the position of the mounting member (32).
3. The swing check valve according to claim 2, wherein a through hole (321) is provided in a middle portion of the mounting member (32), and the valve stem (34) passes through the through hole (321).
4. The swing check valve according to claim 2, further comprising an adjustment bolt (33), wherein the adjustment bolt (33) abuts against the valve stem (34) after being inserted into the mounting member (32).
5. A swing check valve according to claim 2, wherein the valve seat (8) is provided with a mounting groove (81), and each of the first pressure sensors (5) is mounted on the mounting groove (81).
6. The swing check valve according to claim 5, wherein one side of the first pressure sensor (5) is abutted against the bottom surface of the mounting groove (81), a sealing rubber ring (9) in sealing fit with the valve clack body (31) is further arranged on the mounting groove (81), and the other side of the first pressure sensor (5) is abutted against the sealing rubber ring (9).
7. The swing check valve according to claim 1, further comprising a valve cover (2), the valve cover (2) being connected to a top opening of the valve body (1).
8. Swing check valve according to claim 7, characterised in that the valve cap (2) is bolted to the top opening of the valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323097218.7U CN221348154U (en) | 2023-11-15 | 2023-11-15 | Rotary opening type check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323097218.7U CN221348154U (en) | 2023-11-15 | 2023-11-15 | Rotary opening type check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221348154U true CN221348154U (en) | 2024-07-16 |
Family
ID=91833731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323097218.7U Active CN221348154U (en) | 2023-11-15 | 2023-11-15 | Rotary opening type check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221348154U (en) |
-
2023
- 2023-11-15 CN CN202323097218.7U patent/CN221348154U/en active Active
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