CN209781693U - Mechanical temperature control shut-off valve and water vapor sampling device - Google Patents
Mechanical temperature control shut-off valve and water vapor sampling device Download PDFInfo
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- CN209781693U CN209781693U CN201920625330.8U CN201920625330U CN209781693U CN 209781693 U CN209781693 U CN 209781693U CN 201920625330 U CN201920625330 U CN 201920625330U CN 209781693 U CN209781693 U CN 209781693U
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- valve body
- temperature
- memory spring
- convex ring
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Abstract
The utility model discloses a mechanical type control by temperature change shutoff valve, include: the valve comprises a valve body, wherein a radial inward convex ring is arranged in the valve body, a fluid inlet and a fluid outlet are arranged on the side wall of the valve body, and the fluid inlet and the fluid outlet are respectively positioned on two sides of the convex ring; the valve core is arranged in the valve body and is positioned on one side of the convex ring facing the fluid inlet; and when the temperature of the fluid is higher than a preset temperature value, the memory spring extends and drives the valve core to abut against the convex ring so as to close the valve body. The mechanical temperature control shutoff valve adopts the memory spring as a temperature sensing and driving element, and has a simple structure; the action of the memory spring is not influenced by the environment except the temperature, and the stability is good; the memory spring has the advantages of good wear resistance and corrosion resistance, high fatigue resistance, long service life, high reliability, small temperature lag and accurate and reliable temperature control. The utility model also discloses a steam sampling device of including above-mentioned mechanical type control by temperature change shutoff valve.
Description
Technical Field
The utility model relates to an utensil technical field is examined to steam, more specifically says, relates to a mechanical type control by temperature change shutoff valve. Furthermore, the utility model discloses still relate to a steam sampling device including above-mentioned mechanical type control by temperature change shutoff valve.
Background
In thermodynamic systems such as generating sets and thermal power plants, the water vapor sampling device has wide application. The water vapor sampling device can continuously sample a water vapor system and perform online chemical analysis, measurement, network monitoring and the like on the water vapor quality.
In order to carry out overtemperature protection on an instrument of the water vapor sampling device, the water vapor sampling device usually comprises a temperature sensor, a temperature controller and an electromagnetic valve, the temperature controller is respectively connected with the temperature sensor and the electromagnetic valve, the temperature sensor is used for sensing the temperature of water and sending the water temperature information detected by the temperature sensor to the temperature controller, the temperature controller controls the electromagnetic valve to be opened and closed according to the received water temperature information, the electromagnetic valve is turned off when the temperature of sample water exceeds a preset value, and therefore the instrument is protected.
However, the manner of performing over-temperature current-cutoff protection by using electrical components is limited by the power supply, and cannot perform the function of high-temperature current-cutoff protection when power is cut off, so that the stability is poor; moreover, the temperature sensor generally has higher sensitivity within a certain temperature range, and when the temperature exceeds a certain range, the sensitivity of the temperature sensor is lower; in addition, the long-term operation of the temperature sensor at high temperature will affect the service life thereof; moreover, the cost of the electrical control system is high.
In summary, how to provide a mechanical temperature-controlled shutoff valve with good stability, low cost and high reliability is a problem to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a mechanical temperature-controlled shutoff valve and a steam sampling device having the same, which have good stability, low cost and high reliability.
in order to achieve the above object, the present invention provides the following technical solutions:
a mechanical temperature-controlled shutoff valve comprising:
The valve comprises a valve body, wherein a convex ring which is inwards convex in the radial direction is arranged in the valve body, a fluid inlet and a fluid outlet are arranged on the side wall of the valve body, and the fluid inlet and the fluid outlet are respectively positioned on two sides of the convex ring;
The valve core is arranged in the valve body and is positioned on one side, facing the fluid inlet, of the convex ring;
and the memory spring is used for sensing the temperature of the fluid and is connected with the valve core, and when the temperature of the fluid is higher than a preset temperature value, the memory spring extends and drives the valve core to abut against the convex ring so as to close the valve body.
Preferably, the memory spring is connected with the valve core through a first fixing piece, the memory spring is welded with the first fixing piece, and the valve core is in threaded connection with the first fixing piece.
Preferably, the memory spring passes through the second mounting with the first end of valve body links to each other, first end is equipped with first seal, the second mounting with first seal threaded connection, the second mounting with the memory spring welding.
Preferably, a guide sleeve for guiding the valve core is arranged in the valve body.
Preferably, the inner wall of the valve body is provided with a groove, a limiting part used for axially limiting one end of the guide sleeve is arranged in the groove, and the other end of the guide sleeve is abutted to the convex ring.
Preferably, one end of the valve core facing the convex ring is provided with a taper surface used for abutting against the convex ring, and the taper surface is provided with a rubber layer.
Preferably, the valve body is also provided with:
The central rod is used for abutting against the valve core under the action of external force and driving the valve core to be far away from the convex ring so as to open the valve body;
And the return spring is connected with the central rod and is used for driving the central rod to return.
Preferably, the outer wall of the central rod is provided with a first baffle ring which is used for abutting against one end of the return spring and protrudes outwards in the radial direction; the valve body is internally provided with a sleeve, one end of the sleeve is opened, the other end of the sleeve is provided with a second retaining ring which is used for abutting against the other end of the reset spring, and the central part of the second retaining ring is arranged in a central hole which is used for being in sliding fit with the central rod.
Preferably, the outer wall of the central rod is further provided with a radially outward protruding disk, and a rubber ring for sealing connection with the disk is arranged inside the valve body.
A water vapor sampling device comprises an overtemperature shutoff valve, wherein the overtemperature shutoff valve is any one of the mechanical temperature control shutoff valves.
The utility model provides a mechanical type control by temperature change shut-off valve adopts memory spring to come drive valve core and the bulge loop offsets to close the valve body. The memory spring is used as a thermosensitive and driving element and has double functions of temperature sensing and driving, the memory spring is close to the fluid inlet, when the memory spring senses that the temperature of fluid flowing in from the fluid inlet is higher than a preset temperature value, the memory spring extends to enable the valve core to be abutted against the convex ring, so that the fluid exceeding the preset temperature value is prevented from flowing to the fluid outlet, and the fluid exceeding the preset temperature value can be prevented from flowing into an instrument of the water vapor sampling device from the fluid outlet to influence the measurement precision of the instrument.
The memory spring is used as a temperature sensing element and a driving element, so that the structure is simple, and the structure of the valve body is compact; moreover, the action of the memory spring is not influenced by the environment except the temperature, and the stability is good; furthermore, the memory spring has the advantages of good wear resistance and corrosion resistance, high fatigue resistance, long service life, high reliability, small temperature lag and accurate and reliable temperature control.
The utility model provides a steam sampling device, including above-mentioned mechanical type control by temperature change shutoff valve, have above-mentioned beneficial effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a cross-sectional view of a mechanical temperature-controlled shutoff valve according to an embodiment of the present invention when a valve body is opened;
FIG. 2 is a cross-sectional view of the valve body of FIG. 1 with the valve body closed;
Fig. 3 is a sectional view of fig. 1 when the pressing portion is pressed.
The reference numerals in fig. 1 to 3 are as follows:
1 is a valve body, 11 is a convex ring, 12 is a fluid inlet, 13 is a fluid outlet, 14 is a first seal, 15 is a second seal, 16 is a first screw cap, 17 is a second screw cap, 18 is a retaining shoulder, 2 is a valve core, 3 is a memory spring, 31 is a first fixing piece, 32 is a second fixing piece, 4 is a guide sleeve, 5 is a limiting piece, 6 is a central rod, 61 is a first retaining ring, 62 is a disk, 7 is a return spring, 8 is a sleeve, 81 is a second retaining ring, and 9 is a rubber ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
the core of the utility model is to provide a mechanical type control by temperature change shutoff valve and have this mechanical type control by temperature change shutoff valve's steam sampling device, stability is good, and is with low costs, and the reliability is high.
Referring to fig. 1 to 3, fig. 1 is a sectional view of a mechanical temperature-controlled shutoff valve according to an embodiment of the present invention when a valve body is opened; FIG. 2 is a cross-sectional view of the valve body of FIG. 1 with the valve body closed; fig. 3 is a sectional view of fig. 1 when the pressing portion is pressed.
The utility model provides a mechanical type control by temperature change shutoff valve mainly is applied to steam sampling device, including valve body 1, locate case 2 and memory spring 3 in the valve body 1.
Specifically, the valve body 1 has a fluid passage for passing a fluid therethrough inside, and the sidewall of the valve body 1 is provided with a fluid inlet 12 and a fluid outlet 13, both the fluid inlet 12 and the fluid outlet 13 communicating with the fluid passage.
preferably, the fluid inlet 12 and the fluid outlet 13 are respectively provided with a water passage pipe for facilitating communication of the valve body 1 with an external pipe. In view of sealing and connection strength, the two water pipes are preferably fixedly connected to the fluid inlet 12 and the fluid outlet 13 by welding.
In order to realize the closing and the opening of the valve body 1 by matching with the valve core 2, a convex ring 11 which is convex inwards in the radial direction is arranged inside the valve body 1, a fluid inlet 12 and a fluid outlet 13 are respectively arranged at two sides of the convex ring 11, and the valve core 2 is arranged at one side of the convex ring 11 which faces the fluid inlet 12.
It can be understood that when the valve core 2 abuts against the convex ring 11, the fluid channel is cut off, the valve body 1 is closed, and the fluid cannot flow into the fluid outlet 13 from the fluid inlet 12; when the valve core 2 is far away from the convex ring 11, a gap is formed between the valve core 2 and the convex ring 11, the fluid channel is unblocked, the valve body 1 is opened, and fluid can flow from the fluid inlet 12 to the fluid outlet 13 and flow out from the fluid outlet 13.
In order to avoid the corners of the protruding ring 11 from scratching the valve core 2, preferably, the edge of the protruding ring 11 facing the valve core 2 is rounded.
It should be noted that the present invention adopts the memory spring 3 to drive the valve element 2 to offset the convex ring 11, so as to close the valve element 1. The memory spring 3 has the dual functions of temperature sensing and driving as a heat-sensitive and driving element, and the mechanical temperature-controlled shutoff valve provided by the utility model utilizes the characteristic of the memory spring 3 to drive the valve core 2 to move, thereby closing the valve body 1.
That is, the memory spring 3 is arranged inside the valve body 1 and used for sensing the temperature of the fluid circulating in the fluid channel, and when the temperature of the fluid is lower than a preset temperature value, the memory spring 3 keeps the original state; when the temperature of the fluid is higher than the preset temperature value, the memory spring 3 extends, so that the valve core 2 connected with the memory spring is pushed to move, the valve core 2 is abutted against the convex ring 11, and the valve body 1 is closed.
because the valve core 2 is located on one side of the convex ring 11 facing the fluid inlet 12, the memory spring 3 is close to the fluid inlet 12, when the memory spring 3 senses that the temperature of the fluid flowing in from the fluid inlet 12 is higher than a preset temperature value, the memory spring 3 extends to enable the valve core 2 to be abutted against the convex ring 11, so that the fluid exceeding the preset temperature value is prevented from flowing to the fluid outlet 13, and the fluid exceeding the preset temperature value can be prevented from flowing into an instrument of the water vapor sampling device from the fluid outlet 13 to affect the measurement accuracy of the instrument.
it should be noted that, the utility model discloses do not specifically limit to preset temperature value, the technical staff in the field can set for according to actual need, correspondingly, the technical staff in the field can select the material of the alloy silk of coiling into memory spring 3 according to the scope of preset temperature value. Preferably, the preset temperature value ranges from 45 ° to 65 °.
for example, the preset temperature value may be 50 °, and the corresponding memory spring 3 is a NiTi memory alloy spring.
The initial length and the extension length of the memory spring 3 are not specifically limited by the utility model, and the technicians in the field can select the initial length and the extension length according to actual needs.
It can be understood that the memory spring 3 is used as a temperature sensing element and a driving element, so that the structure is simple, and the valve body 1 is compact; moreover, the action of the memory spring 3 is not influenced by the environment except the temperature, and the stability is good; furthermore, the memory spring 3 has good wear resistance and corrosion resistance, high fatigue resistance, long service life, small temperature lag and accurate and reliable temperature control.
Considering the specific connection mode of the memory spring 3 and the valve core 2, as a preferable scheme, the memory spring 3 is connected with the valve core 2 through a first fixing member 31, the memory spring 3 is welded with the first fixing member 31, and the valve core 2 is in threaded connection with the first fixing member 31.
Preferably, the first fixing member 31 is a T-shaped fixing block, the T-shaped fixing block includes a threaded column and a spring connecting portion vertically connected to the threaded column, and the memory spring 3 is welded to an end surface of the spring connecting portion; meanwhile, a stepped hole is formed in one end, facing the memory spring 3, of the valve core 2, an internal thread used for being in threaded connection with the threaded column is arranged on the inner wall of the stepped hole, and after the valve core 2 is in threaded connection with the first fixing piece 31, the spring connecting portion and the end portion, connected with the spring connecting portion, of the memory spring 3 are located in the stepped hole, so that the stability of connection of the memory spring 3 and the valve core 2 is improved.
In consideration of the fixing manner of the end of the memory spring 3 far away from the valve core 2, on the basis of the above embodiment, the memory spring 3 is connected with the first end of the valve body 1 through the second fixing member 32, the first end is provided with the first seal 14, the second fixing member 32 is in threaded connection with the first seal 14, and the second fixing member 32 is welded with the memory spring 3.
it will be appreciated that the first seal 14 serves to seal the first end of the valve body 1, and the present invention is not limited to the specific structure of the first seal 14.
preferably, the second fixing member 32 is a fixing piece having a certain thickness, the memory spring 3 is welded and fixed to the fixing piece, an outer circumferential portion of the fixing piece is provided with an external thread, and the first seal 14 is provided with an internal thread for screwing with the external thread of the fixing piece.
In order to avoid the memory spring 3 from side bending and causing the phenomena of unsmooth movement or blockage of the valve core 2, on the basis of the above embodiment, a guide sleeve 4 for guiding the valve core 2 is arranged in the valve body 1.
Preferably, the valve core 2 is in clearance fit with the guide sleeve 4, so that the guide sleeve 4 can provide good axial guidance for the valve core 2, and at the same time, fluid can flow through the fit clearance between the valve core 2 and the guide sleeve 4.
Considering the axial positioning problem of the guide sleeve 4, as a preferred scheme, the inner wall of the valve body 1 is provided with a groove, a limiting part 5 for axially limiting one end of the guide sleeve 4 is arranged in the groove, and the other end of the guide sleeve 4 is abutted to the convex ring 11.
That is, in the present embodiment, the position limiting member 5 is installed in the groove on the inner wall of the valve body 1 to axially limit one end of the guide sleeve 4, and the protruding ring 11 is used to axially limit the other end of the guide sleeve 4 to prevent the guide sleeve 4 from axially moving in the valve body 1.
preferably, the limiting member 5 is a split washer.
in view of the problem of sealing performance at the position where the valve element 2 abuts against the convex ring 11, on the basis of the above embodiment, the end of the valve element 2 facing the convex ring 11 is provided with a tapered surface for abutting against the convex ring 11, and the tapered surface is provided with a rubber layer.
It can be understood that the rubber layer not only can play the leakproofness of taper face and bulge loop 11 butt department, can also avoid case 2 directly to collide with bulge loop 11, reduces case 2 wearing and tearing, has cushioning effect simultaneously.
Preferably, the rubber layer is a high temperature resistant and wear resistant rubber layer.
it should be noted that, the above embodiments do not limit the opening manner of the valve body 1, for example, the memory spring 3 may be a two-way memory spring, that is, when the temperature of the fluid is higher than a preset temperature value, the two-way memory spring extends to push the valve core 2 to abut against the convex ring 11 to close the valve body 1; when the temperature of the fluid is lower than the preset temperature value, the two-way memory spring contracts to drive the valve core 2 to be far away from the convex ring 11, so that the valve body 1 is opened.
That is to say, the valve body 1 can be opened by sensing the temperature through the two-way memory spring, however, this opening mode is mainly controlled by the temperature, and the proper opening timing of the valve body 1 cannot be selected according to the actual requirement, therefore, in consideration of the convenience when the valve body 1 is opened, on the basis of the above-mentioned embodiment, the valve body 1 is further provided therein with the central rod 6 for abutting against the valve core 2 under the external force and driving the valve core 2 away from the convex ring 11 to open the valve body 1, and the return spring 7 connected to the central rod 6 and for driving the central rod 6 to return.
That is, the valve body 1 is opened by an external force acting on the central rod 6, and the central rod 6 moves toward the valve element 2 and abuts against the valve element 2 under the external force to push the valve element 2 away from the convex ring 11, so that the valve body 1 is opened. That is, when the valve body 1 needs to be opened, only the external force needs to be applied to the center rod 6.
It can be understood that, in the process that the central rod 6 pushes the valve core 2 to move, the reset spring 7 is compressed, when the central rod 6 drives the valve core 2 to move to the initial length of the memory spring 3, the external force is removed, and under the action of the elastic potential energy of the reset spring 7, the central rod 6 is driven to reset to the initial position, so that the central rod 6 is prevented from influencing the circulation of the fluid in the fluid channel.
Preferably, the central rod 6 comprises a pressing portion protruding out of the second end of the valve body 1 for manual pressing to apply an external force, so that the valve body 1 can be opened at any time according to actual requirements by means of manual pressing.
Preferably, the second end of the valve body 1 is provided with a second seal 15, and the pressing part is slidably and hermetically connected with the second seal 15.
Considering the specific fixing mode of the return spring 7, as a preferred solution, the outer wall of the central rod 6 is provided with a first stop ring 61 which is used for abutting against one end of the return spring 7 and is radially convex; the valve body 1 is internally provided with a sleeve 8, one end of the sleeve 8 is opened, the other end of the sleeve 8 is provided with a second retaining ring 81 which is used for abutting against the other end of the reset spring 7, and the central part of the second retaining ring 81 is arranged in a central hole which is used for being in sliding fit with the central rod 6.
That is, the return spring 7 is fitted around the outer periphery of the central rod 6, the central rod 6 is slidably inserted into the inner ring of the second stopper ring 81, one end of the return spring 7 abuts against the first stopper ring 61, and the other end of the return spring 7 abuts against the second stopper ring 81.
In view of the axial positioning problem of the sleeve 8, it is preferable that a radially inward protruding stop shoulder 18 is further provided in the valve body 1, the second stop ring 81 abuts against the stop shoulder 18, and the open end of the sleeve 8 away from the second stop ring 81 preferably abuts against the second seal 15, so as to prevent the sleeve 8 from moving axially under the action of the stop shoulder 18 and the second seal 15.
Preferably, the protruding ring 11 and the stopping shoulder 18 form a stepped inner protruding structure.
In view of the sealing at the second end of the valve body 1, on the basis of the above-described embodiment, the outer wall of the central rod 6 is further provided with a radially outwardly protruding disc 62, and the interior of the valve body 1 is provided with a rubber ring 9 for sealing connection with the disc 62.
That is, when the center rod 6 is returned to the initial position, the disc 62 may be pressed into the rubber ring 9 to be sealingly coupled with the rubber ring 9 to prevent water leakage.
Preferably, the end of the disc 62 facing the rubber ring 9 is chamfered.
Preferably, the rubber ring 9 is a rubber ring 9 that is resistant to high temperature and has high elasticity.
In view of the reliability of the connection between the first seal 14 and the second seal 15 and the first end and the second end of the valve body 1, on the basis of the above embodiments, the outer walls of the first end and the second end are respectively provided with external threads, and the first nut 16 and the second nut 17 are respectively in threaded connection with the external threads of the first end and the second end.
It will be appreciated that the central portion of the second nut 17 is provided with a relief hole when the pressing portion extends beyond the second end.
The present invention is not limited to the materials of the above components, and for example, the valve body 1, the valve element 2, the first fixing member 31, and the second fixing member 32 may be made of HT200 material or 316L stainless steel material.
Except above-mentioned mechanical type control by temperature change shutoff valve, the utility model discloses still provide a steam sampling device including the mechanical type control by temperature change shutoff valve that the above-mentioned embodiment is disclosed, the structure of other each parts of this steam sampling device please refer to prior art, and this text is no longer repeated.
That is to say, this embodiment improves the overtemperature shutoff valve of steam sampling device among the prior art into the mechanical type temperature-sensing shutoff valve that this application above-mentioned any one embodiment disclosed, because above-mentioned mechanical type temperature-sensing shutoff valve's simple structure, stability is good, and with low costs, consequently, can make steam sampling device have corresponding beneficial effect.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
It is right above that the utility model provides a mechanical type control by temperature change shutoff valve and steam sampling device have introduced in detail. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (10)
1. A mechanical temperature-controlled shut-off valve, comprising:
The valve comprises a valve body (1), wherein a radially inward convex ring (11) is arranged inside the valve body (1), a fluid inlet (12) and a fluid outlet (13) are arranged on the side wall of the valve body (1), and the fluid inlet (12) and the fluid outlet (13) are respectively positioned on two sides of the convex ring (11);
The valve core (2) is arranged in the valve body (1), and the valve core (2) is positioned on one side, facing the fluid inlet (12), of the convex ring (11);
The valve comprises a memory spring (3) used for sensing the temperature of fluid, wherein the memory spring (3) is connected with the valve core (2), and when the temperature of the fluid is higher than a preset temperature value, the memory spring (3) extends and drives the valve core (2) to abut against the convex ring (11) so as to close the valve body (1).
2. The mechanical temperature-controlled shutoff valve according to claim 1, characterized in that the memory spring (3) is connected to the valve core (2) by a first fixing member (31), the memory spring (3) is welded to the first fixing member (31), and the valve core (2) is in threaded connection with the first fixing member (31).
3. the mechanical temperature-controlled shutoff valve according to claim 2, characterized in that the memory spring (3) is connected to a first end of the valve body (1) via a second fastening element (32), the first end being provided with a first seal (14), the second fastening element (32) being in threaded connection with the first seal (14), the second fastening element (32) being welded to the memory spring (3).
4. The mechanical temperature-controlled shut-off valve according to claim 1, characterized in that a guide sleeve (4) for guiding the valve core (2) is arranged in the valve body (1).
5. The mechanical temperature-controlled shutoff valve according to claim 4, characterized in that the inner wall of the valve body (1) is provided with a groove, a limit member (5) for axially limiting one end of the guide sleeve (4) is arranged in the groove, and the other end of the guide sleeve (4) abuts against the convex ring (11).
6. The mechanical temperature-controlled shut-off valve according to claim 1, characterized in that the end of the valve core (2) facing the protruding ring (11) is provided with a tapered surface for abutting against the protruding ring (11), the tapered surface being provided with a rubber layer.
7. The mechanical temperature-controlled shut-off valve according to any one of claims 1 to 6, characterized in that the valve body (1) is further provided with:
The central rod (6) is used for abutting against the valve core (2) under the action of external force and driving the valve core (2) to be far away from the convex ring (11) so as to open the valve body (1);
And the return spring (7) is connected with the central rod (6) and is used for driving the central rod (6) to return.
8. The mechanical thermostatic shut-off valve according to claim 7, characterized in that the outer wall of the central rod (6) is provided with a first stop ring (61) which is radially outwardly convex for abutting against one end of the return spring (7); be equipped with sleeve (8) in valve body (1), the one end opening of sleeve (8), the other end be equipped with be used for with second that the other end of reset spring (7) offsets keeps off ring (81), the central part that the second kept off ring (81) locate be used for with well core rod (6) sliding fit's centre bore.
9. Mechanical thermostatic shut-off valve according to claim 8, characterized in that the outer wall of the central rod (6) is further provided with a radially protruding disc (62), and the inside of the valve body (1) is provided with a rubber ring (9) for sealing connection with the disc (62).
10. A water vapour sampling device comprising an overtemperature shutdown valve, wherein the overtemperature shutdown valve is a mechanical temperature-controlled shutdown valve as claimed in any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920625330.8U CN209781693U (en) | 2019-05-05 | 2019-05-05 | Mechanical temperature control shut-off valve and water vapor sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920625330.8U CN209781693U (en) | 2019-05-05 | 2019-05-05 | Mechanical temperature control shut-off valve and water vapor sampling device |
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| Publication Number | Publication Date |
|---|---|
| CN209781693U true CN209781693U (en) | 2019-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920625330.8U Expired - Fee Related CN209781693U (en) | 2019-05-05 | 2019-05-05 | Mechanical temperature control shut-off valve and water vapor sampling device |
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| CN (1) | CN209781693U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109990100A (en) * | 2019-05-05 | 2019-07-09 | 苏州市职业大学 | A kind of mechanical temperature control shut-off valve and vapor sampling device |
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2019
- 2019-05-05 CN CN201920625330.8U patent/CN209781693U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109990100A (en) * | 2019-05-05 | 2019-07-09 | 苏州市职业大学 | A kind of mechanical temperature control shut-off valve and vapor sampling device |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191213 Termination date: 20210505 |
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| CF01 | Termination of patent right due to non-payment of annual fee |