CN210397837U - Temperature and pressure safety valve - Google Patents
Temperature and pressure safety valve Download PDFInfo
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- CN210397837U CN210397837U CN201921219378.5U CN201921219378U CN210397837U CN 210397837 U CN210397837 U CN 210397837U CN 201921219378 U CN201921219378 U CN 201921219378U CN 210397837 U CN210397837 U CN 210397837U
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Abstract
A temperature and pressure safety valve comprises a valve body, a pressure relief hole formed in the upper surface of the valve body and a water inlet hole formed in the lower surface of the valve body, wherein a pressure relief joint communicated with the pressure relief hole is formed in the right side of the valve body; the center of the guide plate is provided with a guide hole, and the valve rod penetrates through the guide hole; the pressure relief hole is communicated with the water inlet hole through a limber hole, and the sealing plug covers and seals the orifice at the upper end of the limber hole; the lower end of the valve rod penetrates through the sealing plug. The utility model discloses a temperature pressure relief valve can surpass the very first time of normal pressure at inner bag pressure, releases the pressure that surpasss to guarantee the stability of inner bag pressure.
Description
Technical Field
The utility model relates to a temperature pressure relief valve.
Background
The temperature and pressure safety valve is a valve used on an electric water heater, when the pressure of an inner container of the electric water heater is overlarge, water flow or gas can be discharged to the outside from the temperature and pressure safety valve, so that the stability of the pressure of the inner container is ensured, if the temperature and pressure safety valve releases the pressure, the sealing plug can be jacked open only by the fact that the pressure of the inner container is larger than the sum of the gravity of the sealing plug and the elasticity of a spring, but the pressure of the inner container at the moment actually exceeds the normal pressure for a period of time, the condition that the pressure of the inner container is unbalanced and explosion occurs due to the continuously increased pressure of the inner container within the period of time easily exists, and.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide a temperature pressure relief valve, it can surpass the very first time of normal pressure at inner bag pressure, releases the pressure that surpasss to guarantee the stability of inner bag pressure.
The utility model provides a technical scheme that above-mentioned technical problem adopted does:
the utility model discloses a temperature and pressure relief valve, including the valve body, locate the pressure release hole of valve body upper surface and locate the inlet opening of valve body lower surface, the valve body right side is equipped with the pressure release that link up mutually with the pressure release and connects, is equipped with the valve rod in the pressure release hole, and the valve rod upper end is upwards worn out to the pressure release hole outer and is connected with the spanner, and the valve rod lower extreme is connected with sealed end cap, and the valve rod overcoat is equipped with spring, its characterized in that: a guide plate is arranged in the upper part of the pressure relief hole, and the spring is positioned between the guide plate and the sealing plug; the center of the guide plate is provided with a guide hole, and the valve rod penetrates through the guide hole; the pressure relief hole is communicated with the water inlet hole through a limber hole, and the sealing plug covers and seals the orifice at the upper end of the limber hole; the lower end of the valve rod penetrates through the sealing plug, and the end face of the lower end of the valve rod is flush with the lower surface of the sealing plug; a plurality of first pressure relief channels which are uniformly distributed in the circumferential direction are arranged on the end face of the lower end of the valve rod; a first limiting ring is arranged at the lower end port of the first pressure relief channel; the upper surface of the first limiting ring is provided with an upper limiting head, and the outer diameter of the upper limiting head is smaller than the inner diameter of the first pressure relief channel; a sliding rod is arranged at the center of the lower surface of the upper limiting head, and the diameter of the sliding rod is smaller than the inner diameter of the first limiting ring; the lower end of the sliding rod penetrates downwards to an inner hole of the first limiting ring and is connected with a lower limiting head, and the weight of the lower limiting head is smaller than that of the upper limiting head and that of the sealing plug; the valve rod is provided with a plurality of water outlet holes communicated with the first pressure relief channel; and a secondary pressure reduction device is arranged in the center of the end face of the lower end of the valve rod.
The secondary pressure reduction device comprises a second pressure reduction channel arranged in the center of the end face of the lower end of the valve rod, and the second pressure reduction channel is enclosed by the first pressure reduction channel; a second limiting ring is arranged at the lower end port of the second pressure relief channel; a matched sliding column is arranged in the second pressure relief channel, and the outer wall of the sliding column is attached to the inner wall of the second pressure relief channel; the lower end of the sliding column is connected with a telescopic rod, and the telescopic rod and the sliding column are integrally formed; the lower end of the telescopic rod downwards passes through the inner hole of the second limiting ring and is connected with a gravity block; the weight of the gravity block is less than that of the sealing plug, and the weight of the gravity block is greater than that of the lower limiting head; a water conveying pipeline is arranged in the telescopic rod, and the upper end of the water conveying pipeline extends into the upper part of the sliding column; the left side and the right side of the outer wall of the lower part of the telescopic rod are provided with first through holes communicated with the water conveying pipeline; the left side and the right side of the outer wall of the upper part of the sliding column are provided with second through holes communicated with a water conveying pipeline; and third through holes communicated with the second pressure relief channel are formed in the left side and the right side of the second pressure relief channel, and an orifice at one end of each third through hole is positioned on the outer wall of the valve rod.
The inner wall of the guide hole is provided with an annular sealing groove; and a sealing ring matched with the sealing groove is arranged in the sealing groove.
A lower boss is arranged on the upper surface of the sealing plug; the lower surface of the guide plate is provided with an upper boss corresponding to the lower boss in position; the upper end of the spring is sleeved outside the upper boss, and the lower end of the spring is sleeved outside the lower boss.
The utility model has the advantages that:
compared with the prior art, adopt the utility model discloses the first pressure release passageway of temperature pressure relief valve accessible of structure, second pressure release passageway and pressure release hole form three pressure releases, and first pressure release passageway can just can carry out the pressure release the very first time when inner bag pressure has a silk change, and second pressure release passageway can carry out the pressure release under the condition that inner bag pressure increases progressively, and the pressure release hole then can carry out the pressure release when inner bag pressure is serious too big, guarantees the utility model discloses can understand the pressure variation of perception to different periods, corresponding pressure release action is made to the very first time to effectively avoid inner bag pressure constantly to save and can't obtain the condition that in time release leads to the inner bag explosion, effectively stop the potential safety hazard.
Drawings
Fig. 1 is a schematic structural diagram of the temperature and pressure safety valve of the present invention;
fig. 2 is an enlarged view of a portion a of fig. 1.
Detailed Description
The invention is described in further detail below with reference to the following figures and detailed description:
referring to fig. 1 and 2, the utility model provides a temperature and pressure safety valve, which comprises a valve body 1, a pressure relief hole 2 formed in the upper surface of the valve body 1 and a water inlet hole 3 formed in the lower surface of the valve body 1, wherein a pressure relief joint 4 communicated with the pressure relief hole 2 is arranged on the right side of the valve body 1, a valve rod 5 is arranged in the pressure relief hole 2, the upper end of the valve rod 5 upwards penetrates out of the pressure relief hole 2 and is connected with a wrench 6, the lower end of the valve rod 5 is connected with a sealing plug 7, a spring 8 is sleeved outside the valve rod 5, a guide plate 9 is arranged in the upper part of the pressure relief hole 2, and the spring 8; a guide hole 10 is formed in the center of the guide plate 9, and the valve rod 5 penetrates through the guide hole 10; the pressure relief hole 2 is communicated with the water inlet hole 3 through a limber hole 11, and the sealing plug 7 covers and seals the orifice at the upper end of the limber hole 11; the lower end of the valve rod 5 penetrates through the sealing plug 7, and the end surface of the lower end of the valve rod 5 is flush with the lower surface of the sealing plug 7; a plurality of first pressure relief channels 12 which are uniformly distributed in the circumferential direction are arranged on the end surface of the lower end of the valve rod 5; a first limiting ring 13 is arranged at the lower end port of the first pressure relief channel 12; an upper limiting head 14 is arranged on the upper surface of the first limiting ring 13, and the outer diameter of the upper limiting head 14 is smaller than the inner diameter of the first pressure relief channel 12; a sliding rod 15 is arranged at the center of the lower surface of the upper limiting head 14, and the diameter of the sliding rod 15 is smaller than the inner diameter of the first limiting ring 13; the lower end of the sliding rod 15 penetrates downwards to an inner hole of the first limiting ring 13 and is connected with a lower limiting head 16, and the weight of the lower limiting head 16 is smaller than that of the upper limiting head 14 and that of the sealing plug 7; the valve rod 5 is provided with a plurality of water outlet holes 17 communicated with the first pressure relief channel 12; and a secondary pressure reduction device is arranged in the center of the end face of the lower end of the valve rod 5.
The secondary pressure reduction device comprises a second pressure reduction channel 18 arranged in the center of the end face of the lower end of the valve rod 5, and the first pressure reduction channel 12 encloses the second pressure reduction channel 18; a second limiting ring 19 is arranged at the lower end port of the second pressure relief channel 18; a matched sliding column 20 is arranged in the second pressure relief channel 18, and the outer wall of the sliding column 20 is attached to the inner wall of the second pressure relief channel 18; the lower end of the sliding column 20 is connected with a telescopic rod 21, and the telescopic rod 21 and the sliding column 20 are integrally formed; the lower end of the telescopic rod 21 downwards passes through the inner hole of the second limiting ring 19 and is connected with a gravity block 22; the weight of the gravity block 22 is less than that of the sealing plug 7, and the weight of the gravity block 22 is greater than that of the lower limiting head 16; a water conveying pipeline 23 is arranged in the telescopic rod 21, and the upper end of the water conveying pipeline 23 extends into the upper part of the sliding column 20; the left side and the right side of the outer wall of the lower part of the telescopic rod 21 are provided with first through holes 24 communicated with the water conveying pipeline 23; the left side and the right side of the outer wall of the upper part of the sliding column 20 are provided with second through holes 25 communicated with the water conveying pipeline 23; and third through holes 26 communicated with the second pressure relief channel 18 are formed in the left side and the right side of the second pressure relief channel, and an opening at one end of each third through hole 26 is formed in the outer wall of the valve rod 5.
An annular sealing groove 27 is formed in the inner wall of the guide hole 10; a sealing ring 28 matched with the sealing groove 27 is arranged in the sealing groove.
The upper surface of the sealing plug 7 is provided with a lower boss 29; the lower surface of the guide plate 9 is provided with an upper boss 30 corresponding to the lower boss 29; the upper end of the spring 8 is sleeved outside the upper boss 30, and the lower end of the spring 8 is sleeved outside the lower boss 29.
The utility model discloses a use method as follows:
when the pressure of the inner container of the electric water heater begins to increase, because the weight of the lower limiting head 16 is the lightest, when the pressure of the inner container exceeds a normal pressure a little, the lower limiting head 16 senses the pressure at the first time and floats upwards under the action of the pressure of water flow, along with the upward floating of the lower limiting head 16, the lower limiting head 16 drives the upper limiting head 14 to move upwards through the sliding rod 15, after the upper limiting head 14 moves upwards, the inner hole of the first limiting ring 13 is not blocked and sealed by the upper limiting head 14 any more, the inner hole of the first limiting ring 13 is in an open state, at the moment, the water flow entering the water through hole 11 from the water inlet 3 enters the first pressure relief channel 12 through a gap between the outer wall of the sliding rod 15 and the inner wall of the first limiting ring 13, the existence of the first pressure relief channel 12 is equivalent to an activity space for increasing the water flow, so that the pressure of the water flow is released instantaneously, when the first pressure relief channel, the water in the first pressure relief channel 12 flows into the pressure relief hole 2 through the water outlet hole 17, and is finally discharged to the outside through the pressure relief joint 4.
When the pressure of the inner container of the electric water heater is further increased, the gravity block with the weight between the lower limiting head 16 and the sealing plug 7 moves upwards under the action of the water flow pressure, at the moment, the telescopic rod 21 and the sliding column 20 both move upwards, the water flow in the water through hole 11 flows into the water conveying pipeline 23 through the first through hole 24, the orifice at the outer end of the second through hole 25 is sealed by the inner wall of the second pressure relief channel 18, so that when the pressure of the first pressure relief channel 12 is relieved, the second pressure relief channel 18 cannot enter any water flow, only when the gravity block 22 drives the sliding column 20 to move upwards to the upper part of the second pressure relief channel 18 to enable the second through hole 25 to be opposite to the third through hole 26, the pressure relief is performed through the water conveying pipeline 23, meanwhile, the water flow is discharged into the pressure relief hole 2 through the third through hole 26 to be relieved, and finally discharged to the outside.
When the pressure of the inner container of the electric water heater is seriously too high, water flow entering the water through hole 11 can directly press the sealing plug 7 to enable the sealing plug 7 to move upwards, the water through hole 11 is not covered and sealed by the sealing plug 7 any more, at the moment, the water flow can enter the pressure relief hole 2 through a gap between the sealing plug 7 and the pressure relief hole 2, at the moment, the spring 8 is compressed, and after the pressure relief is finished, the spring 8 can enable the sealing plug 7 to reset through self elasticity.
In conclusion, can know, the utility model discloses the first pressure release passageway 12 of accessible, second pressure release passageway 18 and pressure release hole 2 form three pressure releases, and first pressure release passageway 12 can just carry out the pressure release the very first time when inner bag pressure has a silk change, and second pressure release passageway can carry out the pressure release under the condition that inner bag pressure increases progressively, and pressure release hole 2 then can carry out the pressure release when inner bag pressure is serious too big, guarantees the utility model discloses can understand the pressure variation of perception to different periods, corresponding pressure release action is made to the very first time to effectively avoid inner bag pressure constantly to save and can't obtain the condition that in time release leads to the inner bag explosion, effectively stop the potential safety hazard.
The inner wall of the guide hole 10 is provided with an annular sealing groove 27, a sealing ring 28 matched with the sealing groove is arranged in the sealing groove 27, the existence of the sealing ring 28 can effectively improve the sealing performance between the valve rod 5 and the guide hole 10, and the condition of water leakage when the valve rod 5 moves up and down is effectively avoided.
The upper surface of the sealing plug 7 is provided with a lower boss 29, the lower surface of the guide plate 9 is provided with an upper boss 30 corresponding to the lower boss 29, the upper end of the spring 8 is sleeved outside the upper boss 30, the lower end of the spring 8 is sleeved outside the lower boss 29, and the stability of the spring 8 can be further ensured due to the upper boss 30 and the lower boss 29.
Claims (4)
1. The utility model provides a temperature pressure relief valve, includes the valve body, locates the pressure release hole of valve body upper surface and locates the inlet opening of valve body lower surface, and the valve body right side is equipped with the pressure release that link up with the pressure release hole and connects, is equipped with the valve rod in the pressure release hole, and the valve rod upper end is upwards worn out to the pressure release hole outer and be connected with the spanner, and the valve rod lower extreme is connected with sealed end cap, and the valve rod overcoat is equipped with spring, its characterized: a guide plate is arranged in the upper part of the pressure relief hole, and the spring is positioned between the guide plate and the sealing plug; the center of the guide plate is provided with a guide hole, and the valve rod penetrates through the guide hole; the pressure relief hole is communicated with the water inlet hole through a limber hole, and the sealing plug covers and seals the orifice at the upper end of the limber hole; the lower end of the valve rod penetrates through the sealing plug, and the end face of the lower end of the valve rod is flush with the lower surface of the sealing plug; a plurality of first pressure relief channels which are uniformly distributed in the circumferential direction are arranged on the end face of the lower end of the valve rod; a first limiting ring is arranged at the lower end port of the first pressure relief channel; the upper surface of the first limiting ring is provided with an upper limiting head, and the outer diameter of the upper limiting head is smaller than the inner diameter of the first pressure relief channel; a sliding rod is arranged at the center of the lower surface of the upper limiting head, and the diameter of the sliding rod is smaller than the inner diameter of the first limiting ring; the lower end of the sliding rod penetrates downwards to an inner hole of the first limiting ring and is connected with a lower limiting head, and the weight of the lower limiting head is smaller than that of the upper limiting head and that of the sealing plug; the valve rod is provided with a plurality of water outlet holes communicated with the first pressure relief channel; and a secondary pressure reduction device is arranged in the center of the end face of the lower end of the valve rod.
2. A temperature and pressure safety valve according to claim 1, wherein: the secondary pressure reduction device comprises a second pressure reduction channel arranged in the center of the end face of the lower end of the valve rod, and the second pressure reduction channel is enclosed by the first pressure reduction channel; a second limiting ring is arranged at the lower end port of the second pressure relief channel; a matched sliding column is arranged in the second pressure relief channel, and the outer wall of the sliding column is attached to the inner wall of the second pressure relief channel; the lower end of the sliding column is connected with a telescopic rod, and the telescopic rod and the sliding column are integrally formed; the lower end of the telescopic rod downwards passes through the inner hole of the second limiting ring and is connected with a gravity block; the weight of the gravity block is less than that of the sealing plug, and the weight of the gravity block is greater than that of the lower limiting head; a water conveying pipeline is arranged in the telescopic rod, and the upper end of the water conveying pipeline extends into the upper part of the sliding column; the left side and the right side of the outer wall of the lower part of the telescopic rod are provided with first through holes communicated with the water conveying pipeline; the left side and the right side of the outer wall of the upper part of the sliding column are provided with second through holes communicated with a water conveying pipeline; and third through holes communicated with the second pressure relief channel are formed in the left side and the right side of the second pressure relief channel, and an orifice at one end of each third through hole is positioned on the outer wall of the valve rod.
3. A temperature and pressure safety valve according to claim 1, wherein: the inner wall of the guide hole is provided with an annular sealing groove; and a sealing ring matched with the sealing groove is arranged in the sealing groove.
4. A temperature and pressure safety valve according to claim 1, wherein: a lower boss is arranged on the upper surface of the sealing plug; the lower surface of the guide plate is provided with an upper boss corresponding to the lower boss in position; the upper end of the spring is sleeved outside the upper boss, and the lower end of the spring is sleeved outside the lower boss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921219378.5U CN210397837U (en) | 2019-07-31 | 2019-07-31 | Temperature and pressure safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921219378.5U CN210397837U (en) | 2019-07-31 | 2019-07-31 | Temperature and pressure safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210397837U true CN210397837U (en) | 2020-04-24 |
Family
ID=70357360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921219378.5U Active CN210397837U (en) | 2019-07-31 | 2019-07-31 | Temperature and pressure safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210397837U (en) |
-
2019
- 2019-07-31 CN CN201921219378.5U patent/CN210397837U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A temperature and pressure safety valve Effective date of registration: 20230629 Granted publication date: 20200424 Pledgee: Taizhou Yuhuan sub branch of Zhejiang Tailong Commercial Bank Co.,Ltd. Pledgor: ZHEJIANG TASHAN FLUID CONTROL TECHNOLOGY CO.,LTD. Registration number: Y2023980046680 |